Even though the shape and size of an aluminum wheel to be chucked for machining is changed, it is possible to easily deal with this situation and to simply chuck the same. In a finger chuck which finger levers 5 are swingably mounted in the radius direction via fulcrum point parts 8 installed at adequately spaced positions in the circumferential direction of the outer circumference of a chuck body, the front end face part of the chuck body front part, which constitutes the front portion of said fulcrum point parts, is eliminated, a plurality of front end face parts 12 which are intended to be selectively replaced and mounted at said eliminated portion are formed integral with each other, and at this time said plurality of front end face parts are provided with a clamp seat 14 and a centering member 23 so that each of said front end face parts can be applied to specified kinds of different workpieces w.

Front part replacement type finger chuck

The invention relates to an automatic floor inner crawling device for a concrete distributing machine, which comprises at least three wedging structures which are arranged on the three layers of adjacent floors, a concrete distributing machine stand column is arranged in the floors through the wedging structures, and is provided with a guide rail, the guide rail is internally provided with circular shafts with the same pace, the middle layer of floor is provided with a supporting turnover block through a backing plate, the supporting turnover block is connected with a lower sliding frame through a pin shaft, the lower sliding frame and an upper sliding frame are sequentially arranged in the slideway in the guide rail, the two ends of a jacking cylinder are respectively connected with the lower sliding frame and the upper sliding frame, the lower sliding frame and the upper sliding frame are respectively and internally pivoted with an upper movable crawling claw and a lower movable crawling claw through pin shafts, the upper movable crawling claw and the lower movable crawling claw can turn over and can support the circular shafts in the guide rail, the upper sliding frame and the lower sliding frame are also respectively and internally provided with an inserted pin, the upper movable crawling claw and the lower movable crawling claw can be positioned by the inserted pins, and the top part of the upper sliding frame is provided with an electric hoist. The invention can avoid the condition that the inner crawling device with the weight being hundreds of kilograms is carried by manpower, so that the labor intensity of workers can be relieved, and the working efficiency can be improved.

Automatic floor inner crawling device for concrete distributing machine

The present invention relates to a guide jig for processing a tap of a crank shaft which includes a base jig (10) having a slide insertion hole (11) inserted into a crank shaft (C) not to be moved; a slider jig (20) which is lifted along the slide insertion hole (11) and has a rod guide hole (21) supporting a rod (R) of a tap device to be able to rotate; a washer (30) fixed to the inner circumference of the slide insertion hole (11); and a spring (40) installed between the slider jig (20) and the washer (30).

Tapping guide jig for crank shaft

PROBLEM TO BE SOLVED: To improve the quality of a product by forming a tapered part in the outside surface of an edge and thinning the thickness of the lower part of the edge. SOLUTION: This grinding wheel edge structure for coring is provided with a cylindrical edge 4 suspended from the lower surface 2a of a base part 2 and cutting a glass disk from, at least, a glass pane 10 by the edge 4 rotating along with the front base part 2. This edge 4 is formed with the tapered part 4a having a shape gradually thinning its thickness toward the lower part, in its outside surface.

Grinding wheel edge structure for coring

PROBLEM TO BE SOLVED: To make it possible to sufficiently protect a working place from wind and rain in case of a rainstorm and, at the same time, to enable the securement of warming sufficiently in the case concrete to be placed is cured SOLUTION: When a building 1 is constructed, temporary posts 2 are installed in a planned construction site or in the vicinity thereof, a temporary roof skeleton 3 is borne on the temporary posts 2, the upper part of the whole construction planned building 1 is covered with the temporary roof skeleton 3, and construction work of the building 1 is progressed downward of the temporary roof skeleton 3 while raising timely the temporary roof skeleton 3 with a climbing mechanism 10 A rain and wind protection sheet 15 is spread around the temporary roof skeleton 3, the rain and wind protection sheet 15 is climbed down to a position for covering a working place in case of a rainstorm or in the case the concret to be placed is cured

Construction method of building using temporary roof skeleton

PURPOSE:To simplify operation by a method in which the structure of a top house is such as to freely open, close or move working field all or partly on smaller places CONSTITUTION:A pin 8b is drawn out of an upper guide unit 8 to release the connection with a guide post 7 for operation, whereupon an expandible rod 10 is extended downwards from a motor cylinder 10 and the upper guide unit 8 raises to lift up the top house At the time when the guide unit 8 rises, the pin 8b is inserted, and the pin 9b of the lower guide unit 9 is pulled out to release the connection An expandible rod 10a is withdrawn and the lower guide unit 9 is raised At the time when the guide unit 9 rises, the pin 9b is inserted Such serial operations repeated several times to raise a climbing device D to lift up the top house

Lift-up device of top house for construction of building

PURPOSE:To facilitate the carry-in/out operations of materials and permit a simple lift-up device to be used by a method in which the working field is all or partly opened or closed or freely moved. CONSTITUTION:Temporary scaffolds B are assembled to the surrounding of a building A under construction. The top house C is made up of portal steel frame structural frames 1 consisting of column base 1a and roof 1b of steel truss and a film 2 set between the roofs 1b of the frames 1, having an accordion structure to be freely opened or closed. The frames 1 on the central and both sides are integrally reinforced by bracings 1c to the opening and closing directions, and two guide posts 7 of H-steel are erectly provided on the outside of the scaffolds B in the beam direction of the building A at an interval to match the width(length) when the top house C is closed. A climbing device D rises intermittently along the guide posts 7.

Top house system for constructing operation of building

PURPOSE:To facilitate the carry-in/out operation of materials and permit a simple lift-up device to be used by a method in which operating field can be all or partly opened or closed or freely moved. CONSTITUTION:Temporary scaffolds B are asembled to the surrounding of a building A under construction. A top house C is made up of portal frame structural frame 1 consisting of steel-frame truss column base 1a and a roof 1b and a film 2 set between the roofs 1b of the structural frame 1, having an accordion-type structure to be freely opened or closed. The film 2 may be set between the column bases 1a. The frames 1 on the central and both sides are integrally reinforced by bracings 1c to the opening and closing directions, and the film 2' can not be folded up. By increasing or reducing the number of the frames 1, the length in the opening and closing directions of the top house C is adjusted according to the length of beam direction of the building A. Also, by increasing or reducing the truss frames of the roof 1b of the frame 1, the span direction of the top house C is adjusted according to the length between the beams of the building A.

Top house for constructing operation of building

PURPOSE:To raise a top house safely and efficiently and simply without taking a place by a method in which the structure of the top house can be all or partly opened, closed, or moved freely. CONSTITUTION:A pin 8b is pulled out of an upper guide unit 8 to release the connection to guide posts 7 for operation, whereupon an expandible rod 10a is extended downwards from a motor cylinder 10, and the unit 8 is raised. The pin 9b of a lower guide unit 9 is pulled out to release the connection. An expandible rod 10a is withdrawn into the cylinder 10 and the unit 9 is raised. These actions are repeated necessary times to raise a climbing device D along the guide posts 7 in order to raise the top house C. Gear motors 13 on both sides of the building A are tuned by a central operation board 16 to operate four climbing devices D at good timing. The whole of the top house C can thus be safely lifted up horizontally.

Suda Mitsushi

Papers

Lift-up device of top house for construction of building

Top house system for constructing operation of building

Top house for constructing operation of building

Lift-up system of top house for construction of building