Showing papers on "Boom published in 1998"

Thailand's boom and bust

Abstract: Completely revised since its first publication in 1996, this book is about the transformation of a country over one roller-coaster decade. It is about the econoics of boom and bust, but also about politics, social changes, and popular culture. "Digs much deeper than the superficial analyses of business trends . . . to explain how a whole society is being transformed by an industrial revolution of unprecedented speed."-Financial Times of London

The Paradox of Plenty: Oil Booms and Petro-States

Abstract: The Paradox of Plenty: Oil Booms and Petro-States, by Terry Lynn Karl. Berkeley: University of California Press, 1997. xviii + 244 pages. Tables to p. 274. Notes to p. 297. Bibl. to p. 331. Index to p. 342. $55 cloth; $22 paper. This important book promises to redefine the debate on the rentier state and to draw wide attention in the field of comparative politics. Its central case is Venezuela, but Terry Lynn Karl includes a comparative chapter examining Algeria, Iran, Nigeria, Indonesia and Norway. The author's ambitious theoretical aim is to present a model of the political and economic development of `petro-states' across regions and time periods. That model is strongly path-dependent. If the development of the petroleum industry is contemporaneous with the building of the modern state, a country's political-economic trajectory is largely pre-determined. The `petro-state' will be characterized by government control over oil resources, leading to a broadly politicized economy in a state with little incentive to build the extractive apparatus that domestic taxation requires. Patron-client ties will dominate the political field. Boom times will lead to a vast expansion of the size of government and a skewed political economy based on rent-seeking rather than productive activity. When the boom ends, hard choices will be deferred as leaders use oil money, and the ability to borrow internationally against oil reserves, to placate a wide range of interests. The economic crisis that results from such behavior will impoverish society and destabilize regimes. Only if a high degree of 'stateness' has been achieved before the onset of oil revenues (a diversified fiscal basis for the state and an efficient, rationallegal bureaucracy) can this path be avoided. Even where it has been avoided (e.g., Norway, and to some extent Indonesia), the overwhelming power of oil will create political economies that share a number of the above characteristics. Even though Karl's path dependency argument differs from the more contingent conclusions about rentier states reached by Kiren Chaudhry,l the common findings of these two authors provide a baseline for a new conceptualization of the rentier state. Counter to earlier findings, both emphasize the fact that oil revenues lead to weaker (though more economically interventionist) states. Without the need to tax, `petro-state' elites will allow extractive and information-gathering capacities-the historical bases of statebuilding-to atrophy. Then, when the boom ends, the state will be unable to tax or regulate effectively its economy, or to discipline its own spending habits. …

The Economic Effects of North Sea Oil on the Manufacturing Sector

Abstract: This paper analyses the economic effects of the oil and gas sector (energy booms) on manufacturing output in two energy producing countries; Norway and UK. Especially, I investigate whether there is evidence of a «Dutch disease», that is whether energy booms have had adverse effects on manufactures. In additions to energy booms, three other types of structural disturbances are identified; demand, supply and oil price shocks. The different disturbances are identified by imposing dynamic restrictions on a vector autoregressive model. Overall, there is only weak evidence of a Dutch disease in UK, whereas manufacturing output in Norway has actually benefited from energy discoveries and higher oil prices.

Control system for a mobile material distribution device

Abstract: A control system is provided for efficiently regulating the discharge of material from a mobile material distribution device having a product tank or bin, a boom with at least one boom section, a plurality of outlet ducts (e. g., nozzles and/or distribution ports) associated with each boom section, shut-off valves for selectively enabling each boom section, and a selectively-movable control valve for regulating the flow of material to the boom sections. The control system includes a boom sensing input for monitoring whether the shut-off valves are open or closed (i.e., whether the associated boom sections are enabled or disabled), and a processing system for maintaining a substantially stable pressure level between the control valve and each shut-off valve by positionally locking the control valve at its last controlled position upon receiving a signal from the boom sensing input indicating the shut-off valves are closed, Based information received from the boom sensing input, other feedback sensors, and/or manually entered by the user, the processing system selectively regulates the control valve of the material distribution device so as to precisely regulate the material dispersal rate through the enabled boom sections and to provide the material distribution device with certain useful functions including loading, unloading, and agitation features.

Articulated boom monitoring system

Abstract: A monitoring system is provided for monitoring positioning and stability of an articulated boom system The articulated boom system includes an articulated boom, having one or more boom sections, extending from a base, along with one or more outriggers extending from the base. The monitoring system includes a load sensor placed on a leading end of the articulated boom, a boom position sensor placed on the leading end, an outrigger sensor placed on the outrigger(s) and a computer. The load sensor delivers a signal to the computer indicative of the load on the leading end The boom position sensor delivers information to the computer indicative of the position of the leading end with respect to the base. The outrigger sensor delivers a signal to the computer indicative of the extension of the outrigger(s) from the base. The computer determines the position of the articulated boom based upon the sensed position of the leading end. Further, the computer monitors the of the stability of the articulated boom system based upon the sensed load, articulated boom position, outrigger(s) extension and predetermined data.

Evaluation in Europe: Boom or Bubble?

Abstract: These are grand days for European evaluators. [I choose my words as a deliberate echo of Frank Moorhouse’s superb and cautionary novel, Grand Days.] All over the continent, governments, international and supranational bodies are publishing guides to evaluation. Within the last two years, we have had guides from the French, the Finnish, the British, the Organization for Economic Cooperation and Development (OECD) and the European Commission (EC) (Conseil Scientifique de l’Evaluation, 1996; EC Structural Funds, 1995; European Commission, 1997; HM Treasury, 1995, 1997; OECD, 1997; Vuorela, 1997; with the main OECD guide still in preparation). In a variety of sectors—most notably for the EC Structural Funds—evaluation has been made legally or conventionally mandatory. We have also recently witnessed the creation of the UK Evaluation Society itself, the European Evaluation Society and national societies in Germany, Italy and Switzerland. The conferences and seminars are without number. Truly, evaluators are among the blessed upon the earth. Interestingly, much of this activity appears to be at a fairly high level—ministries of finance, supreme audit institutions, the budget directorate of the European Commission, the OECD, and so on. The boom extends to these pinnacles of power, and it is principally to this zone of evaluation that I wish to direct my remarks.

Grade averaging system with floating boom and method of using the same

Abstract: A traveling construction apparatus includes a flame having first and second ground engaging traveling gears connected to the frame and spaced apart in a direction of travel. A traveling gear height adjuster is connected between the frame and the first traveling gear. A plurality of height sensors are provided for measuring a height above the ground without engaging the ground. A height controller system is provided for actuating the traveling gear height adjuster in response to input signals from the sensors. A floating boom is connected to the frame and has the sensors mounted on the boom. The boom displaces each of the sensors a substantially equal distance relative to the ground in response to an extension or contraction of the traveling gear height adjuster.

The Middle East and North Africa: a tale of two futures

Abstract: The future of the Middle East and North Africa will be determined by progress on economic reform, political participation and the emergence of a strong identity rooted in the region's history but open to the rest of the world. This article presents two very different tales of the regional "neighborhood" in the year 2010 as a heuristic device to illustrate the possible future outcomes for the region of policy choices made today. The end of a millennium often inspires speculation about the future, especially in a region with a millennial history like the Middle East and North Africa.' But as Charles William Maynes wrote in a recent issue of The Middle East Journal, "about much of the future, all we can know is that important but unpredictable events will happen."2 This article does not attempt to predict the economic future of the Middle East and North Africa, but rather describes what is at stake. Two visions of the year 2010 are offered-tracing two very different paths that could unfold from today's realities and challenges. EXTERNAL AND INTERNAL DYNAMICS A central theme of the economic history of the Middle East and North Africa has been the region's relationship to the rest of the world. Economic historians, such as Charles Issawi, have focused their work on the challenge of expansionary and modernizing Europe, and the reaction of the MENA region to that challenge.3 Later, the oil boom era gave rise to an extensive literature on the way the newly found wealth of the region could be directed to achieve broader development objectives and greater regional integration, and to restore the region's power and prestige vis-a-vis the West.4 Finally, with the collapse of oil prices in the mid-1980s, economic analysis shifted to the possible gains from peace between Arabs and Israelis or from integration with Europe. A number of authors argued that reducing political risks in the region was the key to an investment boom, greater intra-regional trade, and improved employment opportunities for the people of the region.5 In the past three decades oil has been the key determinant of the region's economic performance, but it is unlikely to remain as determining a factor as it was in the past. The boom period between 1973 and the early 1980s was one in which oil prices more than quadrupled in real terms; while the bust period that extended from the mid-1980s to 1995 saw those prices decline by more than 60 percent in real terms. At the peak of the oil price boom in 1978-81, the "windfall rent" from oil reached almost 50 percent of Gross Domestic Product (GDP) in the oil exporting countries, with 35 to 40 percent of GDP "spillover" effects for the region as a whole.6 Petroleum can no longer provide sufficient resources for sustained regional development. The truly remarkable improvements in the socio-economic indicators of many of the oil rich countries, mainly because of the substantial amounts of the oil wealth invested in education, health, and infrastructure, will be endangered if increasing incomes cannot be generated in manufacturing and services. Incomes in the region will have to be based on knowledge, which worldwide is replacing natural resources and even capital as the primary source of wealth. The degree to which knowledge is applied and productivity gains generated will depend on the quality of the economic policies of MENA countries, as well as on regional dynamics. Economic research strongly suggests that there are indeed "neighborhoods" where countries are impacted by the "spillover" effects from economies on each side of their borders. This explains why countries often exhibit good or bad economic performance as a group.7 Part of this phenomenon can be understood in terms of policy emulation and convergence within regions, and part as it relates to perceptions of investors and the relative integration of factor and commodity markets. In terms of cultural and language links, labor mobility and investors' perceptions, the MENA region does constitute a neighborhood. …

Articulating sprayer boom hinge

Abstract: A hinge assembly for use on a spray boom attached to a sprayer apparatus. This hinge assembly allows the inner and outer boom members to pivot in both the horizontal and vertical planes. The hinge assembly has three primary components the first of which is the boom knuckling hinge. The boom knuckling hinge is the component which allows the outer boom assembly to pivot in the vertical plane. The second component of the hinge assembly is the breakaway portion. This component allows the outer boom to flex in the horizontal plane and in a rearward manner when an obstacle or the ground is inadvertently struck by the outer boom during normal operation. The third and last component of the hinge assembly is the boom folding apparatus. The folding apparatus is used to fold the outer boom against the inner boom for transport and storage purposes. This is accomplished by the use of two hydraulic cylinders, one on each the inner and outer booms, that are attached to the boom hinge.

The Roaring 2000s: Building The Wealth And Lifestyle You Desire In The Greatest Boom In History

Abstract: In his bestselling book, "The Great Boom Ahead", published in 1993, Harry Dent, one of the world's most prescient economic prognosticators, stood practically alone in forecasting a new age of prosperity emerging in the 1990s and extending into the new century. Dent foresaw a booming stock market, falling mortgage rates, and the resurgence of America as the premier global economic superpower. All of his predictions have come to fruition. Now, in "The Roaring 2000s", Dent focuses his visionary eye on the full spectrum of changes that will follow in the wake of the burgeoning turn-of-the-century economy. According to Dent, how and where we work and live is about to change more drastically than at any time in our history due to the convergence of the mainstreaming of the Internet and other technologies and the peak spending years of the aging baby boomers. This will result in nothing less than the greatest boom in history and an unprecedented opportunity for investors and entrepreneurs, great buys in real estate, and a wealth of high-quality lifestyle choices for the savvy people who anticipate these changes. We will we such rapid and exciting change as we have not seen since the dizzying pace of the productivity revolution unleashed by the assembly line in the Roaring Twenties. Dent not only offers detailed investment strategies aimed at exploiting the coming boom for the next fifteen years but he also explains future trends in the job market, technology, demographics, and real estate. He foresees the next great population migration and explores the radically different business and organizational structures that will be the offspring of the Information Age. At the crux of these changes is the fundamental shift to a new network model wherein front-line human "browsers" focus on intimately understanding the needs of a unique segment of customers and coordinate the products or expertise of specialized back-line human "servers" to customize solutions. With new research tools applied to the trends that have developed within the last few years, "The Roaring 2000s" reveals concrete predictions and indepth insights into the next decade, including: A Dow that continues to soar and will eventually reach at least 21,500, and possibly 35,000, by the year 2008 The importance of "gazelles", small- to medium-sized, high-growth companies, which today are creating most of of the jobs in this country The rapid future economic development in countries in die Far East, South America, and Eastern Europe, and select areas of Africa, and what that means for investment, employment, and business growth opportunities now "The Roaring 2000s" also describes the lifestyle changes these developments will inspire, including: The New American Dream-- why changing techologies could mean a return to small-town living and which nine types of boomtowns will offer the highest quality of life in the decades ahead Investment strategies that will help readers get the most out of a rapidly changing world It is essential, Dent explains, to understand the magnitude and nature of the forces changing our economy and lifestyles in order to take advantage of the invaluable, emerging opportunities for significantly improving ones quality of life. "The Roaring 2000s" is a necessary guidebook to the not-so-distant future.

Ground attitude control means

Abstract: A ground attitude control apparatus is provided for maintaining a constant boom attitude when traveling over uneven ground. A boom for supporting crop-spraying equipment is pivotally mounted on and extending either side of a carrier for movement about a substantially horizontal first pivot axis. A levelling member is pivotally mounted on the boom for movement about a substantially horizontal second pivot axis. At least one damper is connected between the levelling member and the boom and exerts a damping effort on the boom. A linkage is pivotally connected to both the levelling member and the carrier. The linkage is disposed to control the damping effort to cause the boom to rotate at a desired angular velocity in response to rotation of the carrier.

Boom telescoping mechanism of mobile crane

Abstract: PROBLEM TO BE SOLVED: To provide a boom telescoping mechanism of mobile cranes that has such a structure as keeps the occupation space of engagement/disengagement mechanisms smaller and prevents boom slips and the like reliably. SOLUTION: The boom telescoping mechanism comprises an interlock mechanism, which consists of a boom/boom connecting means 9 for engaging its pin 9A with a boom to hold it and of a cylinder/boom connecting means 8 for engaging its connecting pins 8A with a boom selected at boom changes. The cylinder/boom connecting means 8 includes cylinder/boom-connecting-means-side stop means 21 and 21' for maintaining the connection between the connecting pins 8A and the boom when the boom/boom connecting means 9 is released. A boom/boom-connecting-means-side stop means 20 is further disposed to check the movement of a boom/boom disconnecting means 10 for disconnecting the boom/boom connecting means 9 and the boom, when the connecting pins 8A of the cylinder/boom connecting means 8 are disconnected from the boom. These stop means 20, 21 and 21' and the connecting pins 8A cooperate to prevent the booms from pulling away. COPYRIGHT: (C)2000,JPO

Controlled focused sonic booms from maneuvering aircraft

Abstract: In April 1994, the USAF Armstrong Laboratory, in cooperation with USAF Test Pilot School, conducted an experimental study of controlled focus boom generated by supersonic maneuvers. The objective of this study was to collect focus and postfocus booms and to assess the ability of aircrews to control the placement of the focal region during basic maneuvers. Forty-nine supersonic passes were flown and included level linear acceleration, level turn, accelerating dives, and climbout-pushover maneuvers. These flights were flown under calm and turbulent atmospheric conditions. Turbulent conditions had a defocusing effect which caused distortions in the focus region and resulted in smaller maximum overpressures. Sonic booms were collected by up to 25 boom event analyzer recorders (BEARs) placed in a 13 000-ft linear array. The BEAR units were spaced 500–2000 ft apart with the denser spacing at the expected focal region. This spacing was chosen to evaluate the thickness of both the focal and postfocal regions. The target location varied from 2000–5000 from the uptrack end of the array. Of the 49 flights, a focus boom was placed within the array 37 times and within ±3000 feet of the target point 27 times, demonstrating the ability to place controlled focus booms.

Oil and hydrocarbon spills, modelling, analysis and control

Abstract: SECTION 1: MODELLING OF TRAJECTORY AND FATE OF SPILLS Quantifying environmental implications of alternative oil spill contingency and response plans Oil spill movement in coastal seas:modelling and numerical simulations A prototype statistical approach of oil pollution in the Mediterranean Sea Forecasting accidental marine pollution drift: the French operational plan Spatial data quality and coastal spill modelling Weathering of oil spills accounting for oil components Evolution of oil trajectory, fate and impact assessment models Mathematical modelling of groundwater quality and development methodology for prediction of pollution Some recommendations for testing oil spill computer models. SECTION 2: CONTINGENCY PLANNING AND IN-SITU COUNTERMEASURES The U.S. Minerals Management Service - oil spill response research program Smoke plume screening tool for in-situ burning. SECTION 3: EXPERIMENTAL AND LABORATORY ANALYSIS Investigations on organics in the Libyan beach sand and water: extraction, spectroscopy and gas chromatography, Zwarah to East Tripoli coastline Chemical and toxicological characterisation of water accommodated fractions relevant for oil spill situations Laboratory tests of oil spreading under the ice cover Measurements of oil spill spreading in a wave tank using digital image processing. SECTION 4: SHORELINE PROTECTION AND CLEANUP Hydrodynamic characteristics of water-jet pump for removing oils Natural degradation of hydrocarbons in sandy soils and its potential application to disposal of oil-contaminated materials Removal by pumping of a LNAPL lens floating on the phreatic surface Assessment of the risk of shore contamination by offshore oil spills: model formulation. SECTION 5: TOXICITY TESTING Trace metal analysis using ion chromatography in water partitioned from crude-oil spills Contamination of aromatic hydrocarbons in environmental samples after the Nakhodka oil spill. SECTION 6: RISK ASSESSMENT Perception or reality: oil spill risks on salmon Risk assessment and cost-benefit techniques as management tools for oil spill prevention. SECTION 7: FIELD EXPERIMENTS Diffusion experiment in the Split harbour (middle Adriatic Sea) Field experiments with subsurface releases of oil and dyed water. SECTION 8: REMOTE SENSING Multispectral fluorometric sensor for real time in-situ detection of marine petroleum spills The application of remote sensing techniques to create a Black Sea coastal response strategy for oil spill response. SECTION 9: CLEANUP MEASURES Solvent enhanced bioremediation of weathered oil contamination Removing mineral oil residues from beaches with vegetable oils Control and recovery of spilled oil by using ice boom. SECTION 10: CASE STUDIES - An oil spill model for Cook Inlet and Shelikof Strait, Alaska The oil spill modelling in the Sea of Japan: Application to the tanker 'Nakhodka' 1997 incident

Mobile crane with main boom and mast in adjustable guyed system

Abstract: The adapters between head and foot ends of the necessarily short auxiliary boom (16) have the same or larger transverse dimensions as the main boom (4) and the maximum length of the auxiliary boom required for heavy loads is afforded by the fact that the increase in bearing load achieved by the main auxiliary booms together imparting the total strength of the structure is compensated for by the reduction in bearing load produced by the dead mass of the auxiliary boom (16). The struts (20) hinged to the main boom head and auxiliary boom foot are joined to one another by a length-adjustable anchoring guy, the bottom guy rigidly joined to the main boom (4) and the upper guy to the auxiliary (16). Typically the angle of the auxiliary to the main boom is controlled by adjusting the length of the guy arrangement (21,22).

Center pivot irrigation system

Abstract: An irrigation system is disclosed which includes a center pivot support having an elongated main water boom pivotally connected thereto which extends outwardly therefrom. An elongated extension boom is pivotally connected at its inner end to the outer end of the main boom and is supported by a steerable drive tower. A deflection sensor is positioned on the extension boom for sensing vertical deflection of the extension boom which is caused by relative movement of the main boom with respect to the extension boom. A control connects the deflection sensor with the drive for driving the steerable drive tower upon the deflection sensor sensing a predetermined amount of deflection of the extension boom.

Industrial vehicle with adjustable boom members

Abstract: An industrial vehicle includes a frame, a motive device mounted on the frame, a platform mounted on the frame adjacent to the motive device, a main boom member associated with an industrial implement, the main boom member being coupled to the platform, and at least one secondary boom member attached to the main boom member. The industrial vehicle may comprise in one embodiment tilting structure that tilts the platform about an axis substantially perpendicular to a driving direction of the vehicle, or at least one pivot defining at least one axis about which the main boom member and/or the secondary boom member pivot, the at least one axis being substantially perpendicular to a driving direction of the vehicle. A linkage may be provided that pivots at least one of the main boom member and the at least one secondary boom member about an axis substantially perpendicular to a driving direction of the vehicle. The pivot and/or linkage may be provided to individual ones of the main boom member and the secondary boom member. If the secondary boom member includes two secondary boom members, then the pivot can be provided to pivot one or both of the secondary boom members.

Device for bracing of superlift unit of telescopic crane, especially mobile crane

Abstract: The free front end of the bracing(19) of the superlift unit is attached to an auxiliary boom(8), with the fixing point(20) located at the connecting point between two elements(9,10) of the auxiliary boom. The distance between the start of the rigid auxiliary boom and fixing point for the bracing is at the most half the length of the rigid auxiliary boom. On the top piece of the auxiliary boom an angled section(22) is installed by means of an intermediate component(21) enabling an angled position, the angling being in the direction of inclination of the main element(1).

Treatment of uncertainty in appraisals of commercial properties Some evidence from Sweden

Abstract: The article is based on a study of 100 appraisal reports from the period 1980‐1996, covering a full property cycle A number of aspects related to uncertainty were investigated Among the results are: The appraiser often used both a sales comparison and an income method Both methods usually led to very similar results, probably because the appraiser used an iterative procedure to make the results converge During the boom years, the value was usually presented as a point estimate or a narrow range After the crash, point estimates are unusual and wider ranges dominate Sensitivity analysis were almost never used during the boom Thereafter it can be found in about 50 per cent of the reports During the boom it became more common to make explicit reservations stating that the appraisal only concerned the market value “now”, and that no statement is made about the future market value The results are in line with observations from other countries pointing to the neglect of uncertainty during the boom years Finally it is recommended that at least qualitative information should be given about the strength of the evidence and about the probability distribution of actual prices How the values on the relevant market have developed during the last ten years should be presented so that the client can judge the variability of the market value

Boom arm segment release mechanism for a crop sprayer

Abstract: A crop sprayer includes a number of wheels, a chassis supported by the number of wheels, a boom frame supported by the chassis, and a boom arm segment. The boom arm segment operates in a first mode of operation in which the boom arm segment is maintained at a fixed position relative to the boom frame and a second mode of operation in which the boom arm segment is allowed to freely pivot relative to the boom frame. The crop sprayer further includes an actuator supported on the boom arm segment. The actuator is movable between a pivot-preventing position and a pivot-enabling position. The boom arm segment operates in the first mode of operation when the actuator is positioned in the pivot-preventing position. Movement of the actuator from the pivot-preventing position to the pivot-enabling position causes the boom arm segment to operate in the second mode of operation. A method of preventing damage to a boom arm assembly during a collision between the boom arm assembly and an obstruction is also disclosed.

Apparatus and method for locking a spray boom

Abstract: A boom lock assembly is disclosed. The boom lock assembly locks a boom in a boom saddle and includes a lock mounting frame, a boom lock, and a boom lock actuator. The lock mounting frame is attached to the boom saddle frame. The lock mounting frame includes an actuator support member and a lock support member. The boom lock is slidably mounted on the lock support member and is moveable between a first extended position and a second retracted position. When the boom lock is in the first extended position, the boom lock captures the boom between the boom saddle and the boom lock. When the boom lock is in the second position, the boom lock permits movement of the boom out of the saddle. The boom lock actuator is mounted to the actuator support member at a first end and the boom lock at a second end. The boom lock actuator moves the boom lock to its first and second positions.

Economic Instability, Structural Change, and the Property Markets: The Late-1980s Office Boom in São Paulo

Abstract: The author focuses on the functioning of the office market in the city of Sao Paulo in the late 1980s and early 1990s. Through the examination of the agents active in that market, and of the economic, social, and institutional frameworks within which these agents operated, the author aims to provide a coherent account of how global economic processes impacting the city interacted with locally specific circumstances to produce a cycle of ‘boom and bust’ which, if it is similar and coterminous with other such cycles elsewhere, is also firmly grounded on social, economic, and spatial processes at national and local levels. Thus, an interpretation is provided of how the growth of the share of services in the city's economy was combined with the high levels of instability of the Brazilian economy to generate a development boom and to produce significant changes in the urban fabric. The author's chief concern is with the nature of the actions of users, investors, and developers, with the sets of social practice...

Concrete pump car

Abstract: PROBLEM TO BE SOLVED: To solve the vibrations of a boom supporting a transport pipe at the time of the squeeze pumping of concrete. SOLUTION: A vibration sensor 4 detecting vibrations generated in a boom 2 by the flow of fluid concrete forwarded into a boom transport pipe 3 by a pump installed to the concrete pump car and squeeze-pumped to the position of placing is mounted on the boom 2. A vibration damper 5, to which a vibrational signal output from the vibration sensor 4 and generated in the boom 2 is input, from which a signal decreasing the speed of a pump forwarding fluid concrete into the boom transport pipe 3 is output when the input of the vibrational signal exceeds a set time and which lowers concrete delivery speed forwarded into the boom transport pipe 3 from the pump, is set up. Accordingly, the concrete pump car capable of solving trouble and abounding in safety and having the excellent efficiency of squeeze pumping can be manufactured.

Conversion apparatus and method for use with excavator and crane devices

Abstract: A crane-excavator apparatus and method is provided. More particularly, the present invention relates to a mobile apparatus adaptable for use as a crane and as an excavator, and an associated method. The crane includes a lower crawler adapted for use with an excavator, an upper body adapted for use with an excavator, a boom adapted to engage a crane body, and an adapter for engaging a receptacle of the excavator upper body. Typically, the receptacle would accept an excavator boom. The adaptor and the receptacle are fixedly secured together such that the adaptor defines a connector for receiving the crane boom in the same manner as the crane boom would be accepted by a crane body for providing a range of boom angles comparable to the range of boom angles available to the boom connected to the crane body. The method for adapting an excavator for use as a crane is provided. Typically, the excavator includes a lower crawler, an upper body and a receptacle secured to the upper body for receiving an excavation boom associated with an excavation implement. A crane boom associated with a crane implement is also utilized in the method. The method starts with disengaging, if connected, the excavator boom from the receptacle. Then, the adaptor is engaged with the receptacle secured to the upper excavator body. The adaptor defines a connector for receiving the crane boom in the same manner as the crane boom would be accepted by a crane body, in other words, providing a range of boom angles comparable to the range of boom angles available to the boom connected to the crane body. The crane boom is engaged with the connector.