A self-retractable flip-up chamfered pyramid-shaped climbing claw and its use method

Abstract

The present application relates to a self-retractable, flip-up chamfered pyramid-shaped climbing claw and its use method, belonging to the technical field of building construction. The invention comprises a multi-trapezoidal support beam base, the multi-trapezoidal support beam base including a back plate and a mounting block. One end of the chamfered pyramid-shaped climbing claw is mortise-and-tenoned with a mounting groove. An assembled climbing claw box has an elongated hole formed on its upper surface. The end of the chamfered pyramid-shaped climbing claw remote from the mounting block is inserted into the assembled climbing claw box through a connecting hole. The end of a spring remote from the chamfered pyramid-shaped climbing claw is fixed to the inner wall of the assembled climbing claw box, and a top protrusion extends out of the elongated hole. The bottom of the mounting block is tilted, and the bottom of the mounting block is tilted toward the assembled climbing claw box from the end near the back plate to the end near the assembled climbing claw box. The side of the chamfered pyramid-shaped climbing claw near the back plate is the front side, and the front side is tilted, tilting from bottom to top away from the back plate. The present application reduces the cost of the support beam climbing claw and improves the maintenance efficiency of the support beam climbing claw.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a self-retractable flip chamfered pyramid-shaped climbing claw and a method for using the same. Background Art

[0002] In the existing super high-rise office building construction process, tower cranes are the most important lifting and vertical transportation machinery. The internal climbing self-elevating tower crane has been widely used due to its advantages such as low standard section material consumption and small impact on the shaft construction environment.

[0003] At present, the climbing of heavy tower cranes in civil construction is generally achieved by flipping the lifting beam. Specifically, the lifting beam at the bottom of the tower crane is removed after the tower crane climbs and flipped to the top for the next climb.

[0004] To address the issues associated with flipping supporting steel beams, both domestic and international technical attempts have been made, resulting in a construction method known as a flip-free beam, a no-reverse beam, or a self-climbing tower crane. This method consists of a tower crane, three sets of upper, middle, and lower fixtures representing standard sections of the crane, and three sets of revolving support devices connected to the building. The lower fixture is secured to the base of the crane. The upper and middle fixtures are then gradually raised using a hoist integrated into the tower to provide a support system for climbing and working conditions. This method eliminates the need for flipping steel beams; the key lies in the use of flipping or telescopic brackets installed at the ends of the crane's support system.

[0005] Telescopic brackets are installed at the ends of the tower crane support system. As the support beam moves upward from beneath the embedded bracket, the brackets are retracted in advance. After passing over the embedded bracket, the brackets are extended and rest on the base of the embedded brackets. This telescopic bracket method has certain drawbacks in actual construction. Extending and retracting the support beam brackets requires the installation of an additional hydraulic or electric power unit, which is costly. Furthermore, if the power system fails, maintenance cycles are lengthy, impacting construction efficiency.

[0006] The most common flip corbel is installed at one end of the support beam. The dimensions of the support beam and the flip corbel are fixed, and the flip corbel rotates around a pin. As it moves upward from the bottom of the embedded corbel, it hits the base plate of the embedded corbel and flips over, clearing the base plate. It then rises a certain distance before dropping back down, completing the flipping motion. However, this method has certain drawbacks in actual construction. Firstly, it is only suitable for use when the inner wall of the elevator shaft where the tower crane is located does not taper. If the inner wall tapers, the flipping motion cannot be completed or the support beam is placed too short. Secondly, the support beam must be lifted a certain distance before it can be lowered into position. Therefore, its use is quite limited. Summary of the Invention

[0007] In order to reduce the cost of the support beam climbing claw and improve the maintenance efficiency of the support beam climbing claw, the present application provides a self-retractable flip chamfered pyramid-shaped climbing claw and a method of using the same.

[0008] On the one hand, the present application provides a self-retractable flip chamfered pyramid-shaped climbing claw adopts the following technical solution:

[0009] The top of the support frame is provided with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate,

[0010] The bottom of the mounting block is tilted, and the bottom of the mounting block is tilted from one end close to the back plate to one end of the assembled climbing claw box toward the assembled climbing claw box; the side of the chamfered pyramid-shaped climbing claw close to the back plate is the front, and the front is tilted, and the front is tilted from bottom to top toward the direction away from the back plate.

[0011] By adopting the above technical solution, when installing the chamfered trapezoidal climbing claw, the lifting equipment lifts the tower crane support beam and the chamfered trapezoidal climbing claw, and lifts the chamfered trapezoidal climbing claw to just below the base of the multi-trapezoidal support beam. Due to the limiting effect of the convex top block, one end of the chamfered trapezoidal climbing claw is restricted in the assembled climbing claw box. When the chamfered trapezoidal climbing claw is lifted to contact with the bottom of the mounting block, the chamfered trapezoidal climbing claw begins to compress the spring. As the chamfered trapezoidal climbing claw continues to rise, the inclined surface of the mounting block contacts the front of the chamfered trapezoid, and the spring continues to compress. When the bottom of the chamfered trapezoidal climbing claw is higher than the bottom of the mounting groove, under the action of the spring elastic force, one end of the chamfered trapezoidal climbing claw is inserted into the mounting groove. The designed inverted trapezoidal self-retractable flip climbing claw can realize the extension and retraction and placement of the base of the supporting beam in the vertical direction without adding a power device, thereby solving the most important problem of lifting and positioning of the tower crane support beam in the construction process of non-flipping beam, non-inverting beam or self-climbing tower crane, reducing the cost of the supporting beam climbing claw and facilitating maintenance.

[0012] Optionally, the two opposite side surfaces of the mounting groove are first side surfaces, the bottom surface of the mounting groove is a shelf surface, the two opposite first side surfaces are inclined from top to bottom in a direction approaching each other, the two opposite side surfaces of the inverted pyramid-shaped climbing claw are second side surfaces, and a bottom plate is fixed to the bottom of the inverted pyramid-shaped climbing claw, the bottom plate is in contact with the shelf surface, one of the second side surfaces is in contact with one of the first side surfaces, and the other second side surface is in contact with the other first side surface.

[0013] By adopting this technical solution, the support surface and the two first side surfaces form a "mortise and tenon" structure that accommodates the chamfered pyramid-shaped climbing claw. The first side surfaces act as passive retaining walls, fully supporting the dynamic loads driven by the pyramid-shaped climbing claw. If the chamfered pyramid-shaped climbing claw deflects, it is raised to a specified height and then continued upward, ensuring that the base of the chamfered pyramid-shaped climbing claw is not blocked by the first side surfaces of the multi-trapezoidal support beam, allowing it to complete its telescopic flipping motion. Due to the inclined first side surfaces of the multi-trapezoidal support beam base, the chamfered pyramid-shaped climbing claw tends to automatically fall downward until its base finally contacts the support surface.

[0014] Optionally, stiffening ribs are provided on the inclined surface of the bottom of the mounting block.

[0015] By adopting the above technical solution, the stiffening ribs facilitate the squeezing of the chamfered trapezoidal climbing claws, while reducing the contact area between the bottom inclined surface of the mounting block and the front of the chamfered trapezoid, thereby reducing the friction between the mounting block and the chamfered trapezoid.

[0016] Optionally, a travel wedge assembly is provided on the top of the assembled climbing claw box, and the travel wedge assembly is located between the top protrusion and the mounting block. The travel wedge assembly includes a plurality of travel wedges, and the bottom of the travel wedge is located in the long hole. A connecting assembly is provided between two adjacent travel wedges, and the two adjacent travel wedges are connected and fixed by the connecting assembly. The travel wedge close to the top protrusion is also connected to the top protrusion through the connecting assembly.

[0017] By adopting the above technical solution, when the shear wall undergoes a travel wedge contraction, the initial resting length of the chamfered pyramid-shaped climbing claw no longer meets the requirements. Before the chamfered pyramid-shaped climbing claw is raised, the travel wedge closest to the back plate needs to be removed, and then the chamfered pyramid-shaped climbing claw is raised. When the chamfered pyramid-shaped climbing claw rises to the position of the installation slot, the spring acts to extend the length of the chamfered pyramid-shaped climbing claw from the assembled climbing claw box more than the original length of the chamfered pyramid-shaped climbing claw from the assembled climbing claw box, so the resting length of the chamfered pyramid-shaped climbing claw does not change. The travel wedge assembly enables the chamfered pyramid-shaped climbing claw to achieve adaptability to any wall without modification, adapting to a wider range and more complex contraction and contraction situations in super-high-rise elevator shafts.

[0018] Optionally, the connecting assembly includes a first connecting block and a second connecting block, the first connecting block is fixed to the side wall of one of the stroke wedges, the second connecting block is fixed to the side wall of the other stroke wedge, and the first connecting block and the second connecting block are fixed by a bolt group.

[0019] By adopting the above technical solution, two adjacent stroke wedges are fixed by the bolt group, the first connecting block and the second connecting block, which facilitates the installation and disassembly of the stroke wedge.

[0020] Optionally, a lifting ring is fixed to the top of the travel wedge.

[0021] By adopting the above technical solution, when disassembling the travel wedge, the bolt group on the travel wedge is first removed, and then the lifting ring is lifted by the lifting assembly to take out the travel wedge.

[0022] On the other hand, the present application provides a method for using a self-retractable flip-up chamfered pyramid-shaped climbing claw, comprising the following steps:

[0023] The chamfered pyramid climbing claw is lifted to the bottom of the multi-trapezoidal support beam base by the lifting equipment. Due to the limiting effect of the top protrusion and the travel wedge, the chamfered pyramid climbing claw is in the end limit state, and the overweight bearing capacity spring is in the initial compression state.

[0024] The chamfered pyramid-shaped climbing claw continues to be lifted, and the front of the chamfered pyramid-shaped climbing claw has already contacted the stiffening rib of the multi-trapezoidal support beam base. The overweight bearing capacity spring is ready to enter the compression process state and is ready to enter the telescopic flip forward action;

[0025] Continue to lift the chamfered trapezoidal climbing claw. Due to the resistance between the front panel of the chamfered trapezoidal climbing claw and the stiffening ribs of the multi-trapezoidal support beam base, the process of pushing the overweight bearing capacity spring remains in the compression process state, and gradually completes the telescopic flip forward action through contraction;

[0026] The inverted pyramid-shaped climbing claw is about to retract into place, and the telescopic flip front action is completed;

[0027] The chamfered pyramid-shaped climbing claw has been retracted into place, the overweight bearing capacity spring process enters the rebound state, and the chamfered pyramid-shaped climbing claw gradually extends to perform the telescopic flipping action;

[0028] The chamfered pyramid climbing claw has been extended to its full extent, returned to its initial limit position, and the overload bearing spring has returned to its initial compression position. The chamfered pyramid climbing claw has been placed on the resting surface of the multi-trapezoidal support beam base, and the side surface and the passive side plate of the multi-trapezoidal support beam base have been in contact and fixed, and the post-telescopic flipping action is completed;

[0029] This cycle is repeated until the entire tower crane is lifted without flipping or falling beams.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The inverted pyramid-shaped self-retractable tilting climbing claw can be designed to extend and retract the support beam base in the vertical direction without adding a power device. This solves the most important problem of lifting and repositioning the tower crane support beam in the construction process of non-flipping or non-reversing beams or self-climbing tower cranes, reduces the cost of the support beam climbing claw, and facilitates maintenance.

[0032] 2. The travel wedge assembly enables the chamfered pyramid-shaped climbing claw to adapt to any wall without modification, adapting to a wider range and more complex elevator shafts in super-high-rise buildings;

[0033] 3. This application uses a mortise and tenon joint between the multi-trapezoidal support beam base and the prism-shaped climbing claws, so that the climbing claws can successfully land on the multi-trapezoidal support beam base even when they are tilted in the horizontal direction. There is no need to use welding or bolts to fix the two, which saves construction costs, reduces the steps required by construction workers, improves construction efficiency, and further increases the safety of tower cranes without tilting or overturning beams.

[0034] 4. This application can utilize the design of the assembled climbing claw box to achieve universal use for different types of support beams, making it easy to transfer between different engineering tower cranes and having good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of this application.

[0036] Figure 2 It is a schematic diagram of a multi-trapezoidal support beam base in this application.

[0037] Figure 3 It is a schematic diagram of a multi-trapezoidal support beam base in this application.

[0038] Figure 4 It is a schematic diagram embodying the inverted pyramid-shaped climbing claw in this application.

[0039] Figure 5 It is a schematic diagram embodying the inverted pyramid-shaped climbing claw and spring in this application.

[0040] Figure 6 It is a schematic diagram showing how the chamfered pyramid-shaped climbing claw in this application adapts to the tapering of the wall.

[0041] Figure 7 It is a schematic diagram showing that the chamfered pyramid-shaped climbing claw in the present application is tilted in the horizontal direction.

[0042] Figure 8 It is a schematic diagram showing that the inverted pyramid-shaped climbing claw in the present application is successfully positioned on the resting surface.

[0043] Figure 9 It is a schematic diagram showing the chamfered trapezoidal climbing claw in the present application directly below the multi-trapezoidal support beam base.

[0044] Figure 10 It is a schematic diagram showing the contact between the inverted pyramid-shaped climbing claw and the stiffening rib in this application.

[0045] Figure 11 It is a schematic diagram showing that the chamfered pyramid-shaped climbing claw in the present application is about to be completely retracted into the assembled climbing claw box.

[0046] Figure 12 It is a schematic diagram showing that the chamfered pyramid-shaped climbing claw in the present application has fully entered the assembled climbing claw box.

[0047] Explanation of the reference numerals: 1. Multi-trapezoidal support beam base; 11. Back plate; 12. Mounting block; 121. Mounting groove; 122. Shelf surface; 123. First side surface; 124. Stiffening rib; 2. Chamfered pyramid-shaped climbing claw; 21. Front; 22. Second side surface; 23. Bottom plate; 24. Top protrusion; 3. Assembled climbing claw box; 31. Connecting hole; 32. Long hole; 4. Spring; 5. Travel wedge assembly; 51. Travel wedge; 52. Lifting ring; 6. Connection assembly; 61. First connection block; 62. Second connection block; 63. Bolt group; 7. Wall. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1 -Attached Figure 12 This application is described in further detail.

[0049] The embodiment of the present application discloses a self-retractable flip-up chamfered pyramid-shaped climbing claw. Figure 1 and Figure 2 The self-retractable, tiltable, chamfered pyramid-shaped climbing claw comprises a multi-trapezoidal support beam base 1, which is connected to the core shear wall of the building structure. A chamfered pyramid-shaped climbing claw 2 is mounted on the multi-trapezoidal support beam base 1. The multi-trapezoidal support beam base 1 serves as the primary support for the chamfered pyramid-shaped climbing claw 2, which is used to establish a connection between the tower crane support beam and the shear wall.

[0050] The multi-trapezoidal support beam base 1 includes a back plate 11 and a mounting block 12. The mounting block 12 is provided with a mounting slot 121, into which one end of the chamfered pyramid-shaped climbing claw 2 is mortised. The opposing walls of the mounting slot 121 are first side surfaces 123, and the bottom wall of the mounting slot 121 is a support surface 122. The support surface 122 and the two first side surfaces 123 form a mortise-and-tenon structure that accommodates the chamfered pyramid-shaped climbing claw 2. The two first side surfaces 123 at the bottom of the mounting block 12 are inclined toward each other from top to bottom. The bottom of the mounting block 12 is inclined, and stiffening ribs 124 are provided at the bottom of the mounting block 12.

[0051] The entire multi-trapezoidal support beam base 1 is cast in one go using a mold. The back plate 11 is connected to the embedded parts embedded in the shear wall by welding or bolting, thereby being fixed to the shear wall.

[0052] Reference Figure 2 、 Figure 3 and Figure 4 The side of the chamfered pyramid-shaped climbing claw 2 close to the back plate 11 is the front 21, the two sides of the chamfered pyramid-shaped climbing claw 2 are the second side surfaces 22, and the bottom of the chamfered pyramid-shaped climbing claw 2 is fixed with a bottom plate 23.

[0053] When the chamfered pyramid-shaped climbing claw 2 is installed, the first side surface 123 contacts the second side surface 22, and the bottom of the bottom plate 23 contacts the resting surface 122, thereby securing the chamfered pyramid-shaped climbing claw 2. The mortise and tenon connection between the multi-trapezoidal support beam base 1 and the chamfered pyramid-shaped climbing claw 2 eliminates the need for bolts or welding to secure the multi-trapezoidal support beam base 1 and the chamfered pyramid-shaped climbing claw 2.

[0054] Reference Figure 3 、 Figure 4 and Figure 5 , an assembled climbing claw box 3 is provided on the side of the chamfered pyramid-shaped climbing claw 2 away from the multi-trapezoidal support beam base 1, and two springs 4 are welded and fixed to the end of the chamfered pyramid-shaped climbing claw 2 close to the assembled climbing claw box 3, and the spring 4 is an overweight load-bearing capacity spring. A connecting hole 31 is provided at the end of the assembled climbing claw box 3 close to the back plate 11, and the chamfered pyramid-shaped climbing claw 2 passes through the connecting hole 31, and one end of the chamfered pyramid-shaped climbing claw 2 extends into the assembled climbing claw box 3. The spring 4 is located inside the assembled climbing claw box 3. The bottom of the mounting block 12 is inclined toward the direction of the assembled climbing claw box 3 from the end close to the back plate 11 to the end of the assembled climbing claw box 3; the front face 21 is inclined from bottom to top in the direction away from the back plate 11.

[0055] The upper surface of the assembled climbing claw box 3 is provided with an elongated hole 32, which is connected to the interior of the assembled climbing claw box 3. A top protrusion 24 is fixed on the chamfered pyramid-shaped climbing claw 2, and the top protrusion 24 extends from the elongated hole 32. The top protrusion 24 can slide along the elongated hole 32.

[0056] A travel wedge assembly 5 is provided on the upper surface of the assembled climbing claw box 3. The travel wedge assembly 5 is located between the mounting block 12 and the top protrusion. The travel wedge assembly 5 includes three travel wedges 51. The bottoms of the travel wedges 51 are located in the elongated holes 32, and the travel wedge assembly 5 is connected to the top protrusion 24. A connecting assembly 6 is provided between two adjacent travel wedges 51. The two adjacent travel wedges 51 are connected and fixed together by the connecting assembly 6. The top protrusion 24 is also connected and fixed to the adjacent travel wedges 51 by the connecting assembly 6. The end of the assembled climbing claw box 3 facing away from the chamfered pyramid-shaped climbing claw 2 is welded to the support beam or connected via a flange. The design of the assembled climbing claw box 3 enables universal use with different support beams, facilitating its transfer between different tower cranes in different projects, and achieving good economic benefits.

[0057] The following describes the connection assembly 6 between two adjacent travel wedges 51. The connection assembly 6 includes a first connecting block 61 and a second connecting block 62. The first connecting block 61 is secured to the sidewall of one travel wedge 51, while the second connecting block 62 is secured to the other travel wedge 51. The first and second connecting blocks 61 and 62 are secured together via a bolt assembly 63. A lifting ring 52 is welded to the top of the travel wedge 51, facilitating installation and removal of the travel wedge 51 using lifting equipment. The travel wedge 51 near the backplate 11 abuts against one end of the elongated hole 32, acting as a stop for the top protrusion 24 and, consequently, for the chamfered pyramid-shaped climbing claw 2.

[0058] Reference Figure 6 The travel wedge assembly 5 is a crucial tool for enabling the self-retracting, tilting, chamfered pyramid-shaped claw 2 to adapt to the contraction and extension of any wall 7. When the shear wall 7 undergoes a contraction of the travel wedge 51 at the F(N+2) level, the initial resting length of the chamfered pyramid-shaped claw 2 is no longer sufficient. The resting length of the chamfered pyramid-shaped claw 2 is the length of contact between the chamfered pyramid-shaped claw 2 and the resting surface 122.

[0059] When the chamfered pyramid-shaped climbing claw 2 reaches the F(N+1) floor, the bolt assembly 63 on the travel wedge 51 closest to the wall 7 is loosened, and the chamfered pyramid-shaped climbing claw 2 is lifted away using the lifting ring 52 on the travel wedge 51. At this point, although the top of the assembled climbing claw box 3 can no longer prevent the chamfered pyramid-shaped climbing claw 2 from extending from the connecting hole 31 due to the removal of one travel wedge 51, the chamfered pyramid-shaped climbing claw 2 will not extend temporarily due to the restraining effect of the back plate 11 of the multi-trapezoidal support beam base 1 on the F(N+1) floor wall 7.

[0060] Until the inverted pyramid-shaped climbing claw 2 is lifted to the F(N+2) layer, the spring 4 rebounds from the initial compressed state by the stroke of a travel wedge 51, so that when the multi-trapezoidal support beam base 1 of the F(N+2) layer is telescopically flipped, the shelf length of the inverted pyramid-shaped climbing claw 2 will not change.

[0061] For the shrinkage within the stroke of any one of the stroke wedges 51 of the wall 7, it is necessary to take out a stroke wedge 51, and the shelf length of the inverted truncated pyramid climbing claw 2 will not change. If the shrinkage exceeds one stroke wedge stroke, it is necessary to take out another stroke wedge 51.

[0062] Reference Figure 7 and Figure 8 , adaptive adjustment when the telescopic flipping chamfered trapezoidal climbing claw 2 deviates horizontally. If the chamfered trapezoidal climbing claw 2 deviates, the chamfered trapezoidal climbing claw 2 can be further lifted using a lifting device until the bottom plate 23 of the chamfered trapezoidal climbing claw 2 is no longer blocked by the passive side plates 13 of the multi-trapezoidal support beam base 1, and the telescopic flipping action can be completed.

[0063] Furthermore, due to the existence of the first side surface of the multi-trapezoidal support beam base 1 , the chamfered pyramid-shaped climbing claw 2 has a tendency to automatically fall downward until it successfully lands on the resting surface 122 of the multi-trapezoidal support beam base 1 .

[0064] The self-retractable flipping design of the chamfered pyramid-shaped climbing claw 2 enables vertical crossing of the support beam base. The setting of the travel wedge 51 helps the climbing claw adapt to the contraction of any wall. The multi-trapezoidal and chamfered pyramid-shaped mortise and tenon design allows the climbing claw to be successfully positioned on the support beam base even when it is tilted in the horizontal direction. The design of the assembled climbing claw box enables universal use of support beams of different forms.

[0065] Reference Figures 9-12 The present application also discloses a method for using a self-retractable chamfered trapezoidal climbing claw, comprising the following steps:

[0066] S1. The chamfered trapezoidal climbing claw 2 is lifted to the bottom of the multi-trapezoidal support beam base 1 by lifting the tower crane support beam through the lifting equipment. Due to the limiting effect of the top protrusion 24 and the travel wedge 51, the chamfered trapezoidal climbing claw 2 is in the end limit state, and the overweight bearing capacity spring 4 is in the initial compression state.

[0067] S2. The chamfered trapezoidal climbing claw 2 continues to be lifted, and the front 21 of the chamfered trapezoidal climbing claw 2 has contacted the stiffening rib 124 of the multi-trapezoidal support beam base 1. The overweight bearing capacity spring 4 is ready to enter the compression process state and is ready to enter the front action of the telescopic flip.

[0068] S3. Continue to lift the chamfered trapezoidal climbing claw 2. Due to the resistance between the front face 21 of the chamfered trapezoidal climbing claw 2 and the stiffening rib 124 of the multi-trapezoidal support beam base 1, the process of pushing the overweight bearing capacity spring 4 remains in the compression process state, and the forward movement of the telescopic flip is gradually completed through contraction.

[0069] S4, the inverted pyramid-shaped climbing claw 2 is about to be retracted into place, and the telescopic front turning action is completed.

[0070] S5, the chamfered pyramid-shaped climbing claw 2 has been retracted to its full position, the overweight bearing capacity spring 4 enters the rebound state, and the chamfered pyramid-shaped climbing claw 2 is gradually extended to perform the telescopic flipping rear action.

[0071] S6. The chamfered trapezoidal climbing claw 2 has been extended into place, the chamfered trapezoidal climbing claw 2 has returned to the initial limit state, the overweight bearing capacity spring 4 has returned to the initial compression state, the chamfered trapezoidal climbing claw 2 has been placed on the placing surface 122 of the multi-trapezoidal support beam base 1, and the second side surface 22 and the first side surface 123 of the multi-trapezoidal support beam base 1 have been in contact and fixed, and the rear action of the telescopic flip is completed.

[0072] S7. Repeat this process until the entire tower crane is lifted without flipping or inverting the beam.

[0073] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A self-retractable flip-up chamfered pyramid-shaped climbing claw, characterized in that: The invention comprises a multi-trapezoidal support beam base (1), wherein the multi-trapezoidal support beam base (1) comprises a back plate (11) and a mounting block (12) fixed to the back plate (11), wherein the mounting block (12) is provided with a mounting groove (121), and a chamfered pyramid-shaped climbing claw (2) is provided on one side of the mounting block (12), and one end of the chamfered pyramid-shaped climbing claw (2) is mortised with the mounting groove (121); and an assembled climbing claw box (3) is provided on a side of the mounting block (12) away from the back plate (11), wherein an elongated hole (32) is provided on the upper surface of the assembled climbing claw box (3), and the assembled climbing claw box ( 3) A connecting hole (31) is provided at one end close to the back plate (11), and the end of the inverted pyramid-shaped climbing claw (2) away from the mounting block (12) is inserted into the assembled climbing claw box (3) through the connecting hole (31); a spring (4) is fixed to the end of the inverted pyramid-shaped climbing claw (2) away from the mounting block (12); the end of the spring (4) away from the inverted pyramid-shaped climbing claw (2) is fixed to the inner wall of the assembled climbing claw box (3); a top protrusion (24) is fixed to the top of the inverted pyramid-shaped climbing claw (2), and the top protrusion (24) extends out of the long hole (32); The bottom of the mounting block (12) is tilted, and the bottom of the mounting block (12) is tilted in the direction of the assembled climbing claw box (3) from the end close to the back plate (11) to the end of the assembled climbing claw box (3); the side of the inverted pyramid-shaped climbing claw (2) close to the back plate (11) is the front face (21), and the front face (21) is tilted, and the front face (21) is tilted from bottom to top in the direction away from the back plate (11); A travel wedge assembly (5) is provided on the top of the assembled climbing claw box (3), and the travel wedge assembly (5) is located between the top protrusion (24) and the mounting block (12). The travel wedge assembly (5) includes a plurality of travel wedges (51), and the bottom of the travel wedge (51) is located in the long hole (32). A connecting assembly (6) is provided between two adjacent travel wedges (51), and the two adjacent travel wedges (51) are connected and fixed by the connecting assembly (6). The travel wedge (51) close to the top protrusion (24) is also connected to the top protrusion (24) by the connecting assembly (6).

2. The self-retractable flip-up chamfered pyramid-shaped climbing claw according to claim 1, characterized in that: The two opposite side surfaces of the mounting groove (121) are first side surfaces (123), the bottom surface of the mounting groove (121) is a shelf surface (122), the two opposite first side surfaces (123) are arranged tilted from top to bottom in a direction approaching each other, the two opposite side surfaces of the inverted prism-shaped climbing claw (2) are second side surfaces (22), a bottom plate (23) is fixed to the bottom of the inverted prism-shaped climbing claw (2), the bottom plate (23) is in contact with the shelf surface (122), one of the second side surfaces (22) is in contact with one of the first side surfaces (123), and the other second side surface (22) is in contact with the other first side surface (123).

3. A self-retractable flip-up chamfered pyramid-shaped climbing claw according to claim 1 or 2, characterized in that: A stiffening rib (124) is provided on the inclined surface of the bottom of the mounting block (12).

4. The self-retractable flip-up chamfered pyramid-shaped climbing claw according to claim 1, characterized in that: The connecting assembly (6) comprises a first connecting block (61) and a second connecting block (62), wherein the first connecting block (61) is fixed to the side wall of one of the travel wedges (51), and the second connecting block (62) is fixed to the side wall of the other travel wedge (51), and the first connecting block (61) and the second connecting block (62) are fixed by a bolt group (63).

5. The self-retractable flip-up chamfered pyramid-shaped climbing claw according to claim 4, characterized in that: A lifting ring (52) is fixed to the top of the travel wedge (51).

6. A method for using the self-retractable flip-up chamfered pyramid-shaped climbing claw according to claim 1, characterized in that: The steps include: The chamfered pyramid climbing claw (2) is lifted to the bottom of the multi-trapezoidal support beam base (1) by lifting the tower crane support beam through the lifting equipment. Due to the limiting effect of the top protrusion (24) and the travel wedge (51), the chamfered pyramid climbing claw (2) is in the end limit state, and the spring is in the initial compression state. The spring is set to an overweight bearing capacity spring. The chamfered pyramid-shaped climbing claw (2) continues to be lifted, and the front face (21) of the chamfered pyramid-shaped climbing claw (2) has already contacted the stiffening rib (124) of the multi-trapezoidal support beam base (1), and the overweight bearing capacity spring is ready to enter the compression process state and is ready to enter the telescopic flip forward action; Continue to lift the chamfered trapezoidal climbing claw (2). Due to the resistance between the front plate (21) of the chamfered trapezoidal climbing claw (2) and the stiffening rib (124) of the multi-trapezoidal support beam base (1), the process of pushing the overweight bearing capacity spring remains in the compression process state, and the telescopic flipping forward action is gradually completed by contraction. The inverted pyramid-shaped climbing claw (2) is about to be retracted into place, and the telescopic front flipping action is completed; The inverted pyramid-shaped climbing claw (2) has been retracted into place, the overweight bearing capacity spring process enters a rebound state, and the inverted pyramid-shaped climbing claw (2) is gradually extended to perform a telescopic flipping rear action; The chamfered pyramid climbing claw (2) has been extended to its full position, the chamfered pyramid climbing claw (2) has returned to its initial limit state, the overweight bearing spring has returned to its initial compression state, the chamfered pyramid climbing claw (2) has been placed on the placing surface (122) of the multi-trapezoidal support beam base (1), and the side surface and the passive side plate of the multi-trapezoidal support beam base (1) have been contacted and fixed, and the rear action of the telescopic flip is completed; This cycle is repeated until the entire tower crane is lifted without flipping or falling beams.

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