Showing papers on "Portal frame published in 2016"

Comments on Energy Harvesting on a 2:1 Internal Resonance Portal Frame Support Structure, Using a Nonlinear-Energy Sink as a Passive Controller

Abstract: This paper presents an application of a passive control strategy in a base-excited two-degrees-of-freedom portal frame support structure considering extract energy using a piezoelectric material coupled to a column. The 2:1 (two-to-one) internal resonance is set between the vertical and horizontal coordinates, resulting in a phenomenon known as saturation. This phenomenon transfers partial vibratory mechanical energy from vertical to horizontal mode, making possible to extract energy from the columns. The idea is to tune the vibration of the structure, in order to improve the energy harvesting, and this is performed through a passive controller that is a nonlinear-energy sink device, i.e., the proposed device is a mass-spring-damper that plays a role of tuning the vertical and horizontal displacements, and, as consequence, improving the energy harvesting. The numerical results depicted the best configuration of the controller device, which aims to improve the energy harvesting, whose piezoelectric material is used as a means of low-power energy transduction.

Laser engraving machine

Abstract: The invention discloses a laser engraving machine which comprises a machine tool seat, a workbench, a portal frame, an electrical control system and an AC-axis device, wherein the workbench and the portal frame are arranged on the machine tool seat, the electrical control system for controlling the work process, and the Ac-axis device drives a cutter to move. The workbench comprises a base steel sheet, a Y-axis transmission mechanism and workpiece guide rails, wherein the Y-axis transmission mechanism is arranged at the lower end of the base steel sheet and drives the base steel sheet to move back and forth, and the workpiece guide rails are arranged at the upper end of the base steel sheet and are used for mounting workpieces. The portal frame comprises two stand columns opposite to each other, a beam fixed to the upper ends of the stand columns, a Z-axis transmission mechanism for driving the AC-axis device to move up and down and an X-axis transmission mechanism arranged at the front end of the beam and drives the Z-axis transmission mechanism to move leftwards and rightwards. The laser engraving machine is high in laser engraving efficiency, free of burr, environmentally friendly, free of pollution, low in noise, free of cutter abrasion and beneficial to simplification of overall equipment of a numerically control center, through a planer type milling machine composed of the workbench, the portal frame and the electrical control system, the cutter is flexible to move, the work range is wide, and limitation of the work space is avoided.

Simulation of Thermal Load Distribution in Portal Frame Bridges

Abstract: Uneven exposure to eg solar radiation can cause temperature differences between various structural parts of a bridge, which leads to tensile stresses if the parts cannot move freely In this study, thermal simulations and stress calculations on a model of a portal frame bridge are performed with the aim of evaluating the temperature difference between the bridge parts It is shown that the temperature difference between parts which is proposed by Eurocode 1 is overestimated, thus the resulting stress distribution being unrealistic Using the design method proposed by Eurocode 1 is therefore likely to exaggerate the required reinforcement in crack width limit design, which in turn would lead to unnecessary costs and environmental impacts Further studies are needed in order to determine proper thermal load values and temperature distributions

Connections for Timber–Concrete Hybrid Building: Experimental and Numerical Model Results

Abstract: In seismically active regions, the use of timber–reinforced concrete (RC) hybrid construction can overcome the structural limitations that occur with timber construction. This paper investigates three connections used in the timber frame–RC core hybrid system: (1) RC wall-timber beam connection, (2) timber column-base connection, and (3) timber beam-timber column connection. A series of monotonic and reverse-cyclic loading tests were conducted on three replicate connections. Salient features of each connection (i.e., stiffness, ductility, and energy dissipation) were computed from the monotonic loading test results and were used to set the backbone curve of the analytical Pinching4 hysteretic model. Furthermore, the Pinching4 hysteretic models were calibrated with the reverse-cyclic loading test results. Utility of the Pinching4 hysteretic models was shown with performance prediction of a portal frame test. The portal frame results showed good agreement between the finite element model using the c...

Effect of stressed-skin action on optimal design of cold-formed steel square and rectangular-shaped portal frame buildings

Abstract: Cold-formed steel (CFS) portal frames can be a viable alternative to conventional hot-rolled steel portal frames. They are commonly used for low-rise commercial, light industrial and agricultural buildings. In this paper, the effect of stressed-skin action on the optimum design of CFS portal frames is investigated by conducting a minimum cost design optimisation on a building of span of 6 m, height-to-eaves of 3 m and frame spacing of 3 m; the effect of different number of bays are considered. For the purpose of this study, it is assumed that gables are rigid.The effect of stressed-skin action is larger for“square-shaped” buildings (i.e. when the span and length are the same on plan) and decreases as more bays are added(i.e. as the building becomes more “rectangular-shaped” on plan). The results of the minimum cost optimisation indicate that if stressed-skin action is taken into account, the cost of the internal frame can be reduced by around half for “square-shaped” buildings. It should be noted that this is a minimum cost optimisation, which is not the same as a minimum weight optimisation. It is also shown that a safe design of internal frames could be obtained by ignoring wind loads (i.e. designing the frame only for gravity loads),but this is limited to buildings having a “square-shape”.

Motor vehicle contour dimension checking system

Abstract: The utility model discloses a motor vehicle contour dimension checking system, it includes preceding portal frame and back portal frame, install in vertical laser scanning radar of preceding portal frame, install the two sets of laser shot sensors at the back portal frame, install a set of longitudinal arrangement's the ultrasonic sensor at the stand of back portal frame, install four side cameras in top and the left and right sides and the corresponding ground position of back portal frame, signal processing device with vertical laser scanning radar electric connection, the computer of being connected with the communication of signal processing device, the signal processing device still respectively with the laser shot sensor, ultrasonic sensor, the side camera, terminal surface camera electric connection. Through the length and the height of vertical laser scanning radar and laser shot sensor measurements vehicle, a set of ultrasonic sensor on the back portal frame is used for the measurement to the vehicle width, the camera image sequence of upper and lower and side of back portal frame to the leak of repacking is thoroughly plugged up to the three -dimensional panorama picture of synthetic vehicle.

Multiaxis fatigue test rack

Abstract: The utility model provides a multiaxis fatigue test rack, including portal frame, Y to reaction frame, Y to loading actuator, X to reaction frame, X to loading actuator, translation load bar, Z to loading actuator and workpiece to be tested interfacing apparatus, Z suspends in midair to the loading actuator is vertical on the portal frame, Y to the tail end of loading actuator with Y connects to the reaction frame, Y to the loading end of loading actuator with the translation load bar is connected, X to the tail end of loading actuator with X connects to the reaction frame, X to the loading end of loading actuator with the one end of translation load bar is connected, the other end of translation load bar with workpiece to be tested interfacing apparatus connects. The utility model discloses a multiaxis fatigue test rack can shorten test duration to can improve the credibility of test result.

Highway detecting system that transfinites

Abstract: The utility model discloses a highway detecting system that transfinites, it is including horizontal preceding portal frame that sets up and back portal frame, install in preceding vertical laser scanning radar of preceding portal frame, install in back vertical laser scanning radar of back portal frame, install in the horizontal laser scanning radar of preceding portal frame or back portal frame, the at least a pair of correlation sensor that the perpendicular to road set up, set up in the gross rail load on axle sensor on ground, the preceding camera of portal frame before locating, locate the back camera of back portal frame, the signal processing device, the computer of being connected with the communication of signal processing device, the signal processing device is vertical laser scanning radar, horizontal laser scanning radar, correlation sensor, preceding camera, back camera, gross rail load on axle sensor electric connection around with respectively. Through the gross rail load on axle sensor respectively check weighing accumulative total obtain the car weight, measure the long wide high data of car and the speed of a motor vehicle through the laser scanning radar to can the speed of following, whether loading capacity, the three aspect overall evaluation lorry of vehicle profile size transfinite.

Prediction of response of reinforced concrete frames exposed to fire

Abstract: The objective of this work is to study the restraining effect in fire resistance of framed structures and to evaluate the global response of reinforced concrete frames when exposed to fire based on advanced finite element method. To study the response a single portal frame is analyzed. The effect of floor slab on this frame is studied by modeling a beam-column-slab assembly. The evolution of temperature distribution, internal stresses and deformations of the frame subjected to ISO 834 standard fire curve for both the frames are studied. The thermal and structural responses are evaluated and a comparison of results of individual members and entire structure is done. From the study it can be seen that restraining forces has significant influence on both stresses and deflection and overall response of the structure when compared to individual structural member. Among the various structural elements, columns are the critical members in fire and failure of column causes the failure of entire structure. The fire rating of various structural elements of the frame is determined by various failure criteria and is compared with IS456 2000 tabulated fire rating.

Laser pipe cutting machine and pipe cutting method thereof

Abstract: The invention discloses a laser pipe cutting machine and a pipe cutting method thereof. The laser pipe cutting machine comprises a portal frame, a laser cutting head, a fixing device and a PLC (programmable logic controller), wherein a first driving frame capable of moving on the horizontal X axis along the portal frame is arranged on the portal frame; a second driving frame capable of moving on the vertical Z axis along the first driving frame is arranged on the first driving frame; a rotating frame capable of horizontally rotating on the horizontal plane around the second driving frame is arranged on the second driving frame; and the laser cutting head is mounted on the rotating frame, and can vertically rotate on the vertical plane around the rotating frame. The laser pipe cutting machine can be used for rotationally cutting pipes from different angles, so that the pipes are cut precisely, the pipe abutting is smooth, and the abutting quality is high. According to the pipe cutting method of the laser pipe cutting machine, the pipes are cut precisely.

Portal five-axis numerical control machining center

Abstract: The invention provides a portal five-axis numerical control machining center stable in structure. The machining center comprises a base, a portal frame, a workbench, a sliding seat and a handpiece. The portal frame comprises two columns arranged on the base and a bridge connected with the two columns. The workbench comprises a workbench base and a cradle which is rotationally connected with the workbench base. A cradle motor driving the cradle to rotate is arranged on the workbench base. The cradle rotates around the X-direction axis. A rotary tool magazine is arranged on one side of the base. An X-direction guide rail, a Y-direction guide rail and a Z-direction guide rail are all linear roller straight guide rails. The handpiece moves in the X/Z direction, the workbench moves in the Y direction, and a portal beam is fixed to the columns or integrated with the columns, so that the machining center is stable in structure and high in shock resistance; multiple rib plate structures on a rack enable the rack to be lighter on the premise of ensuring enough strength; a spindle box is closer to the Z-direction guide rail, so that the rigidity of the spindle box is effectively improved.

Robot intelligent pore-opening device

Abstract: The invention relates to a robot intelligent pore-opening device which comprises an outer rail, wherein a double-column portal frame is arranged on the outer rail; a control cabinet is mounted on the double-column portal frame; a base of the double-column portal frame is provided with a portal travelling drive device; the robot cutting device comprises a cutting robot; the cutting robot is mounted on a lifting supporting base in a suspended manner; the tail end of the cutting robot is provided with a laser detector; the lifting supporting base and a beam of the double-column portal frame are connected through a movable slide plate; a transverse drive device and a lifting drive device are arranged on the movable slide plate; and racks and guide rails are arranged on the beam and the lifting supporting base. The robot intelligent pore-opening device can open pores at different positions, in different directions and at different bevel angles in workpieces with different thicknesses and different radians; and the tail end of the cutting robot is provided with the laser detector, so that pore-opening positions, angles and radians can be guaranteed to be completely correct, and therefore, pore-opening operation saves both time and labor.

Dual-steel portal frame design to withstand a fire exposure of 45 minutes

Abstract: This paper presents the design of industrial portal frames with plain carbon steel (S275) and micro-alloyed Fire Resistant (FR) steel, coated with intumescent paint as fire protection for the structure. The coating improves the overall heat resistance of the metallic structure. The portal frames with different spans were calculated to observe their fire behavior. The structure was dimensioned by estimating the stresses to which each particular structural section was subjected and by selecting the most economic combination. The process was then repeated with the new dimensions to reach an optimal structural design. The key variables analyzed in this study are: five different spans, seven intumescent paint thicknesses, and eleven price ratios between the FR and the S275 steels, considering a fire exposure time of 45 minutes in all of the scenarios under study. The main conclusion was that the use of FR combined with S275 and the intumescent paint system was the most profitable option. In many cases, the better performance of this combination offered the most technically feasible option for the design of portal frame steel structures.

Finite-element investigation of cold-formed steel portal frames in fire

Abstract: This paper presents the results of a full-scale site fire test performed on a cold-formed steel portal frame building with semi-rigid joints. The purpose of the study is to establish a performance-based approach for the design of such structures in fire boundary conditions. In the full-scale site fire test, the building collapsed asymmetrically at a temperature of 714°C. A non-linear elasto-plastic finite-element shell model is described and is validated against the results of the full-scale test. A parametric study is presented that highlights the importance of in-plane restraint from the side rails in preventing an outwards sway failure for both a single portal and full building geometry model. The study also demonstrates that the semi-rigidity of the joints should be taken into account in the design. The single portal and full building geometry models display a close match to site test results with failure at 682°C and 704°C, respectively. A design case is described in accordance with Steel Constructio...

Intelligent trolley for tunnel construction

Abstract: The invention discloses an intelligent trolley for tunnel construction The intelligent trolley for tunnel construction comprises a portal frame, a conveying mechanism, jacking mechanisms, a moving and locking mechanism and two walking trolleys, wherein two symmetrical arc-shaped tracks are fixedly arranged on the portal frame; the two walking trolleys are symmetrically arranged on the two arc-shaped tracks; the conveying mechanism comprises a support frame and winding drums; the support frame is arranged at the bottom of the portal frame and is used for supporting waterproof materials; the winding drums are rotatably arranged on the two walking trolleys and are used for winding the waterproof materials on the support frame; a plurality of groups of jacking mechanisms are fixed on the portal frame and are used for jacking the waterproof materials; the moving and locking mechanism is arranged at the lower part of the portal frame and is used for moving and locking the portal frame The intelligent trolley has the advantages that the waterproof materials can be rapidly wound on the walking trolleys, the waterproof materials can be automatically unfolded, jacked in place and subjected to formation of perpendicularity so as to achieve the purpose of paving one coil of waterproof materials for one time, and the trolley can be locked during construction, so that the using safety is improved

Planer -type 3D printer

Abstract: The utility model provides a planer -type 3D printer, relates to 3D and prints technical field, and it includes and printing device and switch board still includes portal frame and mobile Workbench, mobile Workbench includes the chassis of rectangle and sets up in the rectangle platform of chassis along the length direction removal, the portal frame is transversely striden and is located mobile Workbench, and the coexistence post of portal frame difference fixed mounting in the both sides on the long limit of chassis, and the opposite face of coexistence post is equipped with an upright guide rail respectively, and the crossbeam both ends of portal frame are removed respectively and are set up in an upright guide rail, and competent guide rail is laid to a side of crossbeam, printing device passes through the mounting panel removal and sets up in horizontal guide rail, the switch board is connected with portal frame, mobile Workbench and printing device respectively. The utility model discloses the precision of printing back 3D work piece be can ensure, rejection rate and manufacturing cost have been reduced.

Dynamics behaviour of an elastic non-ideal (NIS) portal frame, including fractional nonlinearities

Abstract: This paper overviews recent developments on some problems related to elastic structures, such as portal frames, taking into account the full interactions of the vibrating systems, with an energy source of limited power supply (small motors, electro-mechanical shakers). We include a discussion on fractional (rational) damping and stiffness effects on the adopted modelling. This was a plenary lecture, delivered in the event titled: Mechanics of Slender Structures, organized in Northampton, England from 21-22, September 2015.

Timber cutting machine

Abstract: The utility model discloses a timber cutting machine, which comprises a frame, but but be equipped with transverse movement's clamping device longitudinal motion's cutting knife, the drive arrangement of control clamping device motion distance in the frame, clamping device is used for ordering about timber and removes, the cutting knife is used for cutting timber, the lead screw that horizontal polished rod that drive arrangement includes two mobilizable portal frames, join in marriage with the portal frame cunning and drive portal frame moved on the polished rod, the lead screw is driven by servo motor, clamping device sets up in the both ends of portal frame, clamping device includes the splint of two relative settings and two cylinders of separately -driven splint action, two cylinders set up on the portal frame respectively. The utility model aims at providing a timber cutting machine for the plank of automated production wooden block dish usefulness.

Cap sealing production line for tablet canning

Abstract: The invention discloses a cap sealing production line for tablet canning. The production line comprises a workbench and a pair of portal frames arranged on the workbench, wherein the inside of one portal frame adopts a cavity structure; a transverse plate is arranged on the pair of portal frames; a counting and tablet discharging unit is arranged on the transverse plate; a conveying unit is arranged on the workbench; a stamping unit is arranged in the cavity structure of the portal frame and comprises a mold roll, an auxiliary rotating shaft and a driving clamping and conveying roller which are arranged in one supporting leg of the portal frames, an opening formed in the upper surface of a cross beam of the portal frames, a guide frame arranged on the cross beam of the portal frames, an air valve box which is arranged on the guide frame and can move in the length direction of the guide frame, a stamping mechanism and a plastic packaging machine which are arranged on the air valve box, a supporting shaft, a pair of tensioning rollers and a film winding roller which are arranged in the other supporting leg of the portal frames as well as a push mechanism arranged on one supporting leg of the portal frames. The production line has the beneficial effects of simple structure and high practicability.

A roof large-span large-diameter pipe installing tool and installing method

Abstract: The invention relates to a roof large-span large-diameter pipe installing tool and installing method. The installing tool comprises a truss, guide carrier rollers, a portal frame and an electric block. The portal frame is a rectangular frame structure formed from I-beams; the portal frame is arranged on a roof; the electric block is arranged at the top end of the portal frame; the truss is arranged on the roof after penetrating the portal frame. Each guide carrier roller comprises a pedestal and two roller wheels used for carrying and conveying pipes; the pedestal is fixedly arranged on the truss and the two roller wheels are arranged at the two ends of the pedestal; the distance between the two roller wheels is less than the diameter of the pipes. The truss penetrates pipe supports on the roof; the two roller wheels of each guide carrier roller are higher than the pipe supports on the roof; the roof is provided with a lifting opening at the portal frame. The problem in maintenance and installation of pipes on roofs that a hoist cannot be used at a large-span factory and the periphery thereof for hoisting is solved; the installing tool and the installing method have no influence on production in the factory.

Analysis of the Response of a One-Storey One-Bay Steel Frame to Blast

Abstract: In recent years, there has been a considerable increase in perceived risks of blast loading attacks or similar incidents on structures. Blast design is therefore a necessary aspect of the design for building structures globally and as such building design must adapt accordingly. Presented herein is an attempt to determine the numerical response of a seismically designed single-degree-of-freedom (SDOF) structure to blast loading. The SDOF model in the form of a portal frame was designed to withstand a typical seismic occurrence in Northern Trinidad. Blast loads caused by applying a 500 kg charge weight of TNT at standoff distances of 45 m, 33 m, and 20 m were then applied to the model. The blast loading on the frame was determined using empirical methods. The analytical study showed that the seismically designed SDOF plane frame model entered the plastic region during the application of the blast load occurring up to the critical standoff distance.

Integral traversing system and method for portal-type full space support of cast-in-situ box girder

Abstract: The invention discloses an integral traversing system and an integral traversing method for a portal-type full space support of a cast-in-situ box girder. The integral traversing system for the portal-type full space support of the cast-in-situ box girder comprises the portal-type full space support, wherein a transverse beam is installed between bottoms of upright columns as a lower transverse beam of the portal-type support, the upright columns are arranged at two ends of a portal frame of the portal-type full space support; an adjustable bottom support is installed at the bottom of each upright column; a load-bearing beam is arranged at the bottom of the lower transverse beam of the portal-type support, and longitudinally penetrates through the entire portal frame; the load-bearing beam is in fixed connection with the lower transverse beam of the portal-type support; a jack and steel wheels are installed at the bottom of the load-bearing beam; one side of the portal-type full space support is in connection with traction equipment through a steel wire rope; the traction equipment is a chain hoist and is fixed outside the portal-type full space support; and the chain hoist is fixed at a temporary anchoring point outside the portal-type full space support. According to the integral traversing system disclosed by the invention, as the steel wheels are installed at a lower part of a conventional full space support, a well-installed portal-type full space support can be recycled, one-time support disassembly and assembly can be avoided, so that construction process can be accelerated, and materials can be saved, and the integral traversing system according to the invention has the advantages of convenience for installation and simplicity in operation, and can be widely applied to the construction field of box girders.

Metal cutting machine tool

Abstract: The invention discloses a metal cutting machine tool, and relates to the technical field of mechanical equipment. The metal cutting machine tool comprises a cutting table, a portal frame, a transverse bracket and a cutting device, wherein the cutting table is arranged in the middle of the portal frame; the transverse bracket is arranged at the upper end of the portal frame; the cutting device is arranged on the transverse bracket; the metal cutting machine tool further comprises a motor, a rotating shaft, an electromagnet device, a switch and an open slot; the motor is fixed on the portal frame; the output shaft of the motor is connected with the rotating shaft by virtue of a coupling; the electromagnet device is connected to the rotating shaft; two ends of the rotating shaft are fixed on the portal frame; the open slot is formed in the portal frame; the switch is arranged on the portal frame and is connected with the electromagnet device. Metal fragments produced in the metal cutting process can be effectively collected and are prevented from splashing all around, so that the machine tool and the body health of staff are effectively protected, and the practicability is relatively good.

Vehicle dimension automatic measurement instrument system

Abstract: The invention relates to a vehicle dimension automatic measurement instrument system, which comprises a portal frame, two long rails, two positioning optical gratings, a power supply cabinet, three groups of high-speed detection optical gratings and a control module, wherein the portal frame is in a rectangular shape formed by four square stripes; the two opposite square strips are mutually parallel; the two long rails are mutually parallel, and are respectively arranged at the two sides of the portal frame; a certain height is formed between the ground and the long rails; the two positioning optical gratings are respectively arranged on the corresponding long rails, correspond to each other, and are used for positioning the position of a vehicle; the power supply cabinet is positioned at one side of the long rails, and is mainly used for providing a power supply for a vehicle dimension automatic measuring instrument system; the three groups of high-speed detection optical gratings are respectively arranged on the surfaces of the portal frame and the long rails, and are used for measuring the practical outer contour data of the vehicle; the control module is connected with the portal frame and the long rails. The optical point intervals of the high-speed detection optical gratings are fine, so that the precision is high; meanwhile, the influence by external environment cannot be easily caused.

Sign indicating number device is beaten in side wall automatic positioning of all steel tire

Abstract: The utility model relates to a sign indicating number device is beaten in side wall automatic positioning of all steel tire. Include: the base frame frame, mechanism in deciding, install in on the base frame frame, for the centre gripping warp transport mechanism carries the tire that comes, transport mechanism, install in on the base frame frame for carry the tire, photoelectric switch, install in on the base frame frame for detection wheel puts the position of a foetus, the portal frame, install in base frame puts up upper portion, the diaxon removes the manipulator, install in on the portal frame, beat the ink recorder and construct, install in the diaxon removes on the manipulator for beat the sign indicating number to the tire. Beneficial effect: the utility model discloses a this automatic coding device of configuration can satisfy the sign indicating number work of beating of different specification tires, has improved the tire side wall and has beaten sign indicating number degree of automation, reduces the manufacturing cost of enterprise.

Construction method of secondary tunnel lining

Abstract: The invention discloses a construction method of a secondary tunnel lining The construction method comprises the steps of S1, mounting a shape steel portal frame in the middle of a tunnel; S2, setting up a scaffold at the outer part of the shape steel portal frame; S3, laying and fixing square timber at the outer part of the scaffold; S4, erecting a steel tube mold base on the square timber to fill a clearance between a preset position of the secondary lining and the scaffold; S5, laying steel moulding plates on the steel tube mold base, wherein the size of each steel moulding plate is one square meter or below; S6, arranging closure plates at the ends of the two sides of the laid steel moulding plates; and S7, pouring concrete on the periphery of the steel moulding plates, so as to from the secondary lining According to the method provided by the invention, the secondary lining construction can be carried out without a formworktrolleywhen the fracture surface landform is quiet complex; and the size of the steel moulding plates is not large, so that the splicing and disassembly are convenient, the adjustment for the partial shape is quiet convenient, the construction cost is reduced, and the construction time is saved

Open caisson sinking and soil-taking machine for soft soil foundation

Abstract: The invention relates to an open caisson sinking and soil-taking machine for a soft soil foundation. Two hydraulic lifting winches are installed on a lifting winch base of a portal frame, the portal frame penetrates through operation main platforms connected to machine frame main beams, and sliding oil cylinders are connected between the operation main platforms and the machine frame main beams; the hydraulic lifting winches are connected to a protecting sleeve carrying pole and a screw conveyor connecting beam through steel wire ropes, the screw conveyor connecting beam is provided with a screw soil excavator, and a submersible sand-sucking pump is fixedly connected to the screw conveyor connecting beam and is connected to a soil outlet bin of the screw soil excavator; the machine frame main beams are connected to a supporting wheel set through a main beam and supporting wheel connecting base, the supporting wheel set is installed on a ring beam rail, and a ring beam is welded to ring beam stand columns; a main beam rotation guide frame is connected to one side of a main beam machine frame through a hinge base and is installed on the ring beam rail through a main beam rotation guide frame supporting wheel and a supporting wheel; the two hydraulic lifting winches are installed on the rotary lifting winch base of the main beam machine frame and are connected to the machine frame main beams and a steel cable guide wheel set on the ring beam.