H-shaped steel main limb standard joint climbing guide device

Abstract

The utility model discloses a kind of H-shaped steel main limb standard section climbing guiding devices, including guide wheel assembly, fixed lug plate, jackscrew and bolt fixing seat, the fixed lug plate is connected in the inside of jacking sleeve frame crossbeam, the guide wheel assembly is connected by fixed lug plate, lug plate pin shaft and the two crossbeams of jacking sleeve frame, guide wheel assembly includes guide roller, pulley carrier, guide wheel pin shaft, end cover, shaft sleeve, the guide roller is rotatably connected in guide wheel pin shaft two sides by end cover and screw, guide wheel pin shaft is arranged on pulley carrier, guide wheel pin shaft middle part is equipped with shaft sleeve, pulley carrier is connected with lug plate pin shaft, the bolt fixing seat is connected in the bottom surface of jacking sleeve frame crossbeam, jackscrew is screwed on bolt fixing seat, its front end is on pulley carrier, locking nut is equipped on bolt fixing seat for locking jackscrew. Guiding device and standard section main limb gap adjustable, climbing resistance is small, and maintenance is convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of tower cranes, and in particular relates to a climbing guide device for a standard section of H-beam main frame. Background Technology

[0002] During the tower crane's ascent, reliable guidance is essential. Typically, two layers of rollers or sliders are installed at the four corners of the jacking frame as guides. In the jacking and leveling state, the gap between the guide device and the main chord of the standard section should be uniformly approximately 2-3 mm.

[0003] H-beam main frame standard sections are mainly used in medium and large tower cranes. Many existing H-beam main frame standard sections on the market use sliders as guides, which are simple in structure, but have the following shortcomings:

[0004] 1. The gap between the slider guide and the main body of the standard section is not adjustable, which requires high precision in the manufacturing of structural components;

[0005] 2. The slider guide generates sliding friction with the main body of the standard section during the climbing process, resulting in high climbing resistance;

[0006] 3. Inconvenient to maintain and use. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, this utility model provides a climbing guide device for the standard section of H-beam steel main body. The gap between the guide device and the standard section main body is adjustable, the climbing resistance is small, and maintenance and use are convenient.

[0008] To solve the above technical problems, this utility model adopts the following technical solution: A climbing guide device for a standard section of H-beam main frame, comprising a guide wheel assembly, a fixed ear plate, a tightening bolt, and a bolt fixing seat. The fixed ear plate is connected to the inner side of the lifting frame crossbeam. The guide wheel assembly is connected to the two crossbeams of the lifting frame through the fixed ear plate and the ear plate pin. The guide wheel assembly includes a guide roller, a pulley frame, a guide wheel pin, an end cover, and a bushing. The guide roller is rotatably connected to both sides of the guide wheel pin through the end cover and screws. The guide wheel pin passes through the pulley frame, and a bushing is provided in the middle of the guide wheel pin. The pulley frame is connected to the ear plate pin. The bolt fixing seat is connected to the bottom surface of the lifting frame crossbeam. The tightening bolt is screwed onto the bolt fixing seat, and its front end rests on the pulley frame. A locking nut is provided on the bolt fixing seat for locking the tightening bolt.

[0009] In the above technical solution, the guide roller assembly consists of two sets. One set of guide rollers rolls in contact with the wide surface of the flange of the H-beam of the standard section. Its guide rollers are wide-face guide rollers, and the guide rollers of the two wide-face guide rollers are thin and have a small gap. The guide rollers of the other set of guide roller assemblies roll in contact with the narrow surface of the two flanges of the H-beam. They are narrow-face guide rollers, and the guide rollers of the two narrow-face guide rollers are thick and have a large gap.

[0010] In the above technical solution, the bolt fixing seat includes a seat plate, a slot, a slot nut, and a reinforcing plate. The seat plate is provided with a through hole through which the tightening bolt passes. The seat plate is provided with a slot and a slot nut for screwing the tightening bolt on the inner side of the through hole. The locking nut is provided on the outer side of the seat plate.

[0011] In the above technical solution, the seat plate is connected to a stiffening plate, which is located on the outer side of the seat plate.

[0012] In the above technical solution, the front end of the tightening bolt is a screw.

[0013] The beneficial effects of this utility model are:

[0014] 1. By rotating the tightening bolts, the guide rollers can be moved within a certain range, thereby adjusting the climbing gap of the standard section of the H-beam main body. The adjustment method is convenient and quick, and the requirements for the precision of the structural components are not too high, thus reducing the manufacturing difficulty.

[0015] 2. During the climbing process, the guide rollers and the main body of the standard section experience rolling friction, resulting in relatively low climbing resistance;

[0016] 3. The guide rollers are connected by pins, and only the bolts and pins need to be disassembled during maintenance, making disassembly and assembly convenient; the slotted nut on the inner side of the bolt fixing seat allows adjustment by simply tightening the outer bolt, making it easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 A magnified view of A in the middle.

[0019] Figure 3 for Figure 1 A three-dimensional image.

[0020] Figure 4 for Figure 1 Half-sectional view of the central guide wheel assembly.

[0021] The components are: 1. Wide face of wing plate, 2. Narrow face of wing plate, 3. First guide wheel assembly, 4. Second guide wheel assembly, 5. Lifting frame crossbeam, 6. Fixed ear plate, 7. Ear plate pin, 8. Bolt fixing seat, 9. Tightening bolt, 10. Wide face guide roller, 11. Pulley frame, 12. Guide wheel pin, 13. End cover, 14. Bushing, 15. Screw, 16. Locking nut, 17. Slotted nut, 18. Seat plate, 19. Slot, 20. Rib plate, 21. Narrow face guide roller. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 3 The illustrated H-beam main frame standard section climbing guide device includes a guide wheel assembly, a fixed ear plate 6, a tightening bolt 9, and a bolt fixing seat 8. The fixed ear plate 6 is connected to the inner side of the lifting frame crossbeam 5. The guide wheel assembly is connected to the two crossbeams of the lifting frame through the fixed ear plate 6 and the ear plate pin 7. The guide wheel assembly includes guide rollers, a pulley frame 11, a guide wheel pin 12, an end cover 13, and a bushing 14. The guide rollers are rotatably connected to both sides of the guide wheel pin 12 through the end cover 13 and screws. The guide wheel pin 12 passes through the pulley frame 11. A bushing 14 is provided in the middle of the guide wheel pin 12. The pulley frame 11 is connected to the ear plate pin 7. The bolt fixing seat 8 is connected to the bottom surface of the lifting frame crossbeam 5. The tightening bolt 9 is screwed onto the bolt fixing seat 8, and its front end rests on the pulley frame 11. A locking nut 16 is provided on the bolt fixing seat 8 for locking the tightening bolt 9.

[0024] like Figure 4 As shown, the guide roller assembly consists of two sets. One set of guide rollers rolls in contact with the wide surface 1 of the flange of the H-beam of the standard section. These guide rollers are wide-face guide rollers 10, with thin guide rollers and a small gap between them. The other set of guide rollers rolls in contact with the narrow surface 2 of the two flanges of the H-beam. These are narrow-face guide rollers 21, with thick guide rollers and a large gap between them. This design better matches the structure of the H-beam, ensuring that the guide rollers can better contact and roll with their corresponding contact surfaces.

[0025] In the above technical solution, the bolt fixing seat 8 includes a seat plate 18, a slot 19, and a slot nut 19. The seat plate 18 has a through hole through which the tightening bolt 9 passes. The seat plate 18 has a slot 19 and a slot nut 19 screwed to the tightening bolt 9 on the inner side of the through hole. The locking nut 16 is located on the outer side of the seat plate 18. By tightening the tightening bolt 9, the guide wheel is moved, and the gap between the guiding device and the main chord of the standard section is adjusted.

[0026] In the above technical solution, the seat plate 18 is connected to a stiffening plate 20, which is disposed on the outer side of the seat plate 18. The stiffening plate 20 connects the seat plate 18 to increase the strength of the seat plate 18 and extend its service life.

[0027] In the above technical solution, the front end of the tightening bolt 9 is a screw 15.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A climbing guide device for a standard section of an H-beam main leg, characterized in that: Including guide wheels The assembly includes a fixed ear plate, a tightening bolt, and a bolt fixing seat. The fixed ear plate is connected to the inner side of the lifting frame crossbeam. The guide wheel assembly is connected to the two crossbeams of the lifting frame through the fixed ear plate and the ear plate pin. The guide wheel assembly includes a guide roller, a pulley frame, a guide wheel pin, an end cover, and a bushing. The guide roller is rotatably connected to both sides of the guide wheel pin through the end cover and screws. The guide wheel pin passes through the pulley frame and has a bushing in the middle. The pulley frame is connected to the ear plate pin. The bolt fixing seat is connected to the bottom surface of the lifting frame crossbeam. The tightening bolt is screwed onto the bolt fixing seat, and its front end rests on the pulley frame. The bolt fixing seat is equipped with a locking nut for locking the tightening bolt.

2. The climbing guide device for the standard section of the H-beam main leg according to claim 1, characterized in that: The guide roller assembly consists of two sets. One set of guide rollers rolls in contact with the wide surface of the flange of the H-beam of the standard section. Its guide rollers are wide-face guide rollers, and the guide rollers of the two wide-face guide rollers are thin and have a small gap. The guide rollers of the other set of guide roller assembly roll in contact with the narrow surface of the two flanges of the H-beam. They are narrow-face guide rollers, and the guide rollers of the two narrow-face guide rollers are thick and have a large gap.

3. The climbing guide device for the standard section of the H-beam main leg according to claim 1, characterized in that: The bolt fixing seat includes a seat plate, a slot, and a slot nut. The seat plate has a through hole through which the tightening bolt passes. The seat plate has a slot and a slot nut for screwing the tightening bolt on the inner side of the through hole. The locking nut is located on the outer side of the seat plate.

4. The climbing guide device for the standard section of the H-beam main leg according to claim 3, characterized in that: The seat plate is connected to a stiffening plate, which is located on the outer side of the seat plate.

5. The climbing guide device for the standard section of the H-beam main leg according to claim 1, characterized in that: The front end of the tightening bolt is a screw.

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