Tower crane climbing frame

Abstract

The utility model discloses a tower crane climbing frame relates to climbing frame technical field. The utility model discloses a sleeve frame and damping component, and damping component includes sleeve, and the telescopic block of sleeve inner wall slidingly connected has the worm wheel of sleeve inner wall rotatable connection, and the screw rod of worm wheel front fixedly connected has, and the screw rod outer surface is connected with the inside screw thread of telescopic block, and the worm of sleeve inner wall rotatable connection has, and worm bottom and worm wheel top meshing connection, and worm right side penetrates sleeve right side and extends to outside, and worm right side fixedly connected has knob, and the trolley of telescopic block front is provided with. Through setting knob, specifically is the rotation knob, makes worm drive worm wheel rotation to make screw rod drive telescopic block sliding in sleeve inner wall, owing to worm wheel and worm self -locking characteristics, ensure that the position is stable after adjusting, solved the climbing frame of existing use gear and rack transmission and realized the trolley position adjustment, but lack reliable self -locking mechanism, and easy to occur reverse displacement, influence the problem of the stability of trolley.

Description

Technical Field

[0001] This utility model belongs to the field of climbing frame technology, and in particular relates to a tower crane climbing frame. Background Technology

[0002] Tower cranes are one of the most commonly used lifting devices on construction sites, used to lift and transport construction materials such as steel bars, timber, concrete, and steel pipes. In the design of tower crane climbing frames, achieving a stable fit between pulleys and standard sections and adapting to different working conditions has always been a key focus in the industry. However, existing tower crane climbing frames still have some problems.

[0003] For example, the utility model patent with publication number CN213569253U includes a frame and a platform, with the platform fixedly installed on the outer periphery of the frame; the four main chords of the frame are diagonally fixed with shock-absorbing and limiting devices, which include a pulley fixed bracket and a pulley movable bracket. This utility model uses gear and rack transmission to adjust the position of the pulley, but it lacks a reliable self-locking mechanism and is prone to reverse displacement, affecting the stability of the pulley. Utility Model Content

[0004] The purpose of this utility model is to provide a tower crane climbing frame. By setting a knob, specifically rotating the knob, the worm gear rotates on the inner wall of the sleeve. The worm gear drives the worm wheel to rotate, thereby causing the threaded rod to drive the telescopic block to slide on the inner wall of the sleeve, thus precisely adjusting the extension length of the pulley. Due to the self-locking characteristics of the worm wheel and worm gear, the position of the pulley is ensured to be stable after adjustment. This solves the problem that existing climbing frames use gear and rack transmission to adjust the position of the pulley, but lack a reliable self-locking mechanism, which is prone to reverse displacement and affects the stability of the pulley.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a tower crane climbing frame, comprising a sleeve and shock-absorbing components. The sleeve includes four columns, and the number of shock-absorbing components is set to eight, with four components forming a group. Each shock-absorbing component includes a sleeve, and the outer surface of each group of sleeves is fixedly connected to the outer surfaces of the four columns of the sleeve. A telescopic block is slidably connected to the inner wall of the sleeve located at the left rear. A worm gear is rotatably connected to the inner wall of the sleeve, and a threaded rod is fixedly connected to the front of the worm gear. The outer surface of the threaded rod is threadedly connected to the inside of the telescopic block. A worm is rotatably connected to the inner wall of the sleeve, and the bottom of the worm meshes with the top of the worm gear. The right side of the worm passes through the right side of the sleeve and extends to the outside. A knob is fixedly connected to the right side of the worm. A pulley is provided on the front of the telescopic block. The extension length of the telescopic block can be precisely adjusted by driving the threaded rod through the worm gear and worm wheel transmission. Due to the self-locking characteristic of the worm gear and worm wheel, the adjusted position can be reliably maintained and the stability of the pulley can be improved.

[0007] Furthermore, a mounting block is provided behind the pulley, and damping rods are fixedly connected to the four corners of the back of the mounting block. The back of the damping rods is fixedly connected to the front of the telescopic block. A spring is sleeved on the outer surface of the damping rod. The buffering characteristics of the damping rod and the elastic restoring function of the spring can effectively absorb the vibration energy during climbing, reduce the rigid impact when the pulley contacts the standard section, reduce component wear, and improve the seismic resistance of the overall structure.

[0008] Furthermore, a mounting plate is provided on the back of the pulley, and two positioning pins are fixedly connected to the back of the mounting plate. Two positioning holes are opened on the front of the mounting block. The inner wall of the positioning hole is inserted into the outer surface of the positioning pin. A slot is opened on the outer surface of the positioning pin. A locking block is slidably connected inside the mounting block. The outer surface of the locking block contacts the inner wall of the slot. A connecting rod is fixedly connected to the top of the locking block. A button is fixedly connected to the top of the connecting rod. The button is slidably connected to the top of the mounting block. Three springs are fixedly connected to the bottom of the locking block. The positioning pins and positioning holes are inserted into each other. The locking block, slot, and springs enable quick disassembly and assembly of the pulley. The extension and retraction of the locking block are controlled by the button. The pulley can be replaced without special tools, which greatly shortens the maintenance time and improves the maintenance efficiency.

[0009] Furthermore, two limiting rods are fixedly connected to the top of the card block, and two limiting blocks are fixedly connected inside the mounting block. The inside of the limiting block is slidably connected to the outer surface of the limiting rod. The sliding of the limiting rod inside the limiting block restricts the card block to move only in the designed vertical direction, avoiding the card block from deflecting or getting stuck during movement, ensuring that the card block can accurately disengage from or contact the card slot, and improving the stability of the card block.

[0010] Furthermore, the pulley is rotatably connected to the front of the mounting plate via a self-aligning roller bearing. Using a self-aligning roller bearing to connect the pulley and the mounting plate allows the pulley to automatically adjust its angle, compensating for any non-parallelism or installation errors that may exist in the track, as well as the slight angular deviations caused by uneven loads. This reduces abnormal wear on the pulley edges, lowers the frictional resistance when the pulley rotates, makes the operation smoother, and extends the pulley's lifespan.

[0011] Furthermore, a rubber pad is fixedly connected to the outer surface of the pulley. The rubber pad on the outer surface of the pulley can increase the friction with the standard section, prevent relative sliding, reduce direct contact between metals, reduce collision noise, and further buffer vibration through the elastic deformation of the rubber, thereby improving the stability of the climbing process.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model uses a knob, specifically, rotating the knob to drive the worm gear to rotate on the inner wall of the sleeve. The worm gear drives the worm wheel to rotate, thereby causing the threaded rod to drive the telescopic block to slide on the inner wall of the sleeve, thus precisely adjusting the extension length of the pulley. Due to the self-locking characteristics of the worm wheel and worm gear, the position of the pulley is stable after adjustment, improving the stability of the pulley.

[0014] 2. This utility model uses an installation block. Specifically, pressing a button causes the locking block to slide inside the installation block via a connecting rod, disengaging the outer surface of the locking block from the inner wall of the slot. This allows the installation plate and pulley to be removed. During installation, pressing the button inserts the positioning pin into the inner wall of the positioning hole. Releasing the button causes the spring force to reset the locking block, completing the fixation. This enables quick replacement of the pulley and improves maintenance efficiency.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0018] Figure 2 This is a schematic diagram of the shock absorption component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the worm gear and worm structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting block structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the mounting block of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Sleeve; 2. Shock Absorber Component; 21. Sleeve; 211. Worm Gear; 212. Threaded Rod; 213. Worm; 214. Knob; 22. Telescopic Block; 221. Damping Rod; 222. Spring 1; 23. Mounting Block; 231. Positioning Hole; 232. Locking Block; 233. Connecting Rod; 234. Button; 235. Spring 2; 236. Limiting Rod; 237. Limiting Block; 24. Mounting Plate; 241. Positioning Pin; 242. Slot; 25. Pulley; 251. Rubber Pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1-5 As shown, this utility model is a tower crane climbing frame, including a sleeve 1 and shock-absorbing components 2. The sleeve 1 includes four columns, and the number of shock-absorbing components 2 is set to eight, with four shock-absorbing components forming a group. Each shock-absorbing component 2 includes a sleeve 21, and the outer surface of each group of sleeves 21 is fixedly connected to the outer surface of the four columns of the sleeve 1. A telescopic block 22 is slidably connected to the inner wall of the sleeve 21 located on the left rear side. A worm gear 211 is rotatably connected to the inner wall of the sleeve 21, and a threaded rod 212 is fixedly connected to the front of the worm gear 211. The outer surface of the threaded rod 212 is threadedly connected to the inside of the telescopic block 22. A worm 213 is rotatably connected to the inner wall of the sleeve 21. The bottom of the worm gear 211 meshes with the top of the worm wheel 211. The right side of the worm 213 passes through the right side of the sleeve 21 and extends to the outside. A knob 214 is fixedly connected to the right side of the worm 213. A pulley 25 is provided on the front of the telescopic block 22. By rotating the knob 214, the worm 213 is driven to rotate on the inner wall of the sleeve 21. The worm 213 drives the worm wheel 211 to rotate, thereby causing the threaded rod 212 to drive the telescopic block 22 to slide on the inner wall of the sleeve 21. This allows for precise adjustment of the extension length of the pulley 25. Due to the self-locking characteristics of the worm wheel 211 and the worm 213, the position of the pulley 25 is stable after adjustment, thus improving the stability of the pulley 25.

[0026] A mounting block 23 is provided behind the pulley 25. Damping rods 221 are fixedly connected to the four corners of the back of the mounting block 23. The back of the damping rods 221 is fixedly connected to the front of the telescopic block 22. A spring 222 is sleeved on the outer surface of the damping rods 221.

[0027] A mounting plate 24 is provided on the back of the pulley 25. Two positioning pins 241 are fixedly connected to the back of the mounting plate 24. Two positioning holes 231 are provided on the front of the mounting block 23. The inner wall of the positioning hole 231 is inserted into the outer surface of the positioning pin 241. The outer surface of the positioning pin 241 is provided with a slot 242. A locking block 232 is slidably connected inside the mounting block 23. The outer surface of the locking block 232 contacts the inner wall of the slot 242. A connecting rod 233 is fixedly connected to the top of the locking block 232. A button 234 is fixedly connected to the top of the connecting rod 233. The button 234 slides against the top of the mounting block 23. The connection is made by fixing three springs 235 to the bottom of the locking block 232. By setting the mounting block 23, specifically by pressing the button 234, the locking block 232 is slid inside the mounting block 23 via the connecting rod 233, so that the outer surface of the locking block 232 is disengaged from the inner wall of the slot 242, and the mounting plate 24 and pulley 25 can be removed. During installation, press the button 234 to insert the positioning pin 241 into the inner wall of the positioning hole 231. After releasing the button, the elastic force of the springs 235 drives the locking block 232 to reset, completing the fixation. This enables quick replacement of the pulley 25 and improves maintenance efficiency.

[0028] Two limiting rods 236 are fixedly connected to the top of the locking block 232, and two limiting blocks 237 are fixedly connected inside the mounting block 23. The inside of the limiting block 237 is slidably connected to the outer surface of the limiting rods 236.

[0029] The pulley 25 is rotatably connected to the front of the mounting plate 24 via a self-aligning roller bearing.

[0030] A rubber pad 251 is fixedly connected to the outer surface of the pulley 25.

[0031] A specific application of this embodiment is as follows: During use, rotating knob 214 drives worm gear 213 to rotate on the inner wall of sleeve 21. Worm gear 213 drives worm wheel 211 to rotate, thereby causing threaded rod 212 to drive telescopic block 22 to slide on the inner wall of sleeve 21, thus precisely adjusting the extension length of pulley 25. Due to the self-locking characteristics of worm wheel 211 and worm gear 213, the position of pulley 25 is ensured to be stable after adjustment. The buffering characteristics of damping rod 221 and the elastic reset function of spring 222 work together to effectively absorb the vibration energy during climbing, reducing the rigid impact when pulley 25 contacts the standard section. Self-aligning roller bearings are used to connect pulley 25 and mounting plate 24, allowing pulley 25 to automatically adjust its angle, compensating for possible non-parallelism or installation errors of the standard section, as well as small angular deviations caused by eccentric loads, extending the service life of pulley 25. Rubber pad 251 can increase the contact with the standard section. The friction prevents relative sliding, reduces direct contact between metals, lowers collision noise, and further buffers vibration through the elastic deformation of the rubber. When the pulley 25 needs to be replaced, press button 234, and the connecting rod 233 drives the locking block 232 to slide inside the mounting block 23, so that the outer surface of the locking block 232 disengages from the inner wall of the slot 242, and the mounting plate 24 and pulley 25 can be removed. During installation, press button 234 to insert the positioning pin 241 into the inner wall of the positioning hole 231. After releasing, the spring force of spring 235 drives the locking block 232 to reset, completing the fixation. While the locking block 232 moves, the limiting rod 236 slides inside the limiting block 237. The limiting rod 236 and the limiting block 237 constrain the locking block 232 to move only in the designed vertical direction, avoiding the locking block 232 from deflecting or getting stuck during the movement, and ensuring that it can accurately disengage from or contact the slot.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tower crane climbing frame, comprising a frame (1) and shock-absorbing components (2), wherein the frame (1) comprises four columns, and the number of shock-absorbing components (2) is set to eight, wherein the shock-absorbing components (2) are arranged in groups of four, characterized in that: The shock-absorbing assembly (2) includes a sleeve (21). The outer surface of each sleeve (21) is fixedly connected to the outer surface of the four columns of the sleeve frame (1). The inner wall of the sleeve (21) located at the left rear is slidably connected to a telescopic block (22). The inner wall of the sleeve (21) is rotatably connected to a worm gear (211). The front of the worm gear (211) is fixedly connected to a threaded rod (212). The outer surface of the threaded rod (212) is threadedly connected to the inside of the telescopic block (22). The inner wall of the sleeve (21) is rotatably connected to a worm (213). The bottom of the worm (213) is meshed with the top of the worm gear (211). The right side of the worm (213) passes through the right side of the sleeve (21) and extends to the outside. The right side of the worm (213) is fixedly connected to a knob (214). The front of the telescopic block (22) is provided with a pulley (25).

2. The tower crane climbing frame according to claim 1, characterized in that, A mounting block (23) is provided behind the pulley (25). A damping rod (221) is fixedly connected to each of the four corners of the back of the mounting block (23). The back of the damping rod (221) is fixedly connected to the front of the telescopic block (22). A spring (222) is sleeved on the outer surface of the damping rod (221).

3. A tower crane climbing frame according to claim 2, characterized in that, The pulley (25) has a mounting plate (24) on its back. Two positioning pins (241) are fixedly connected to the back of the mounting plate (24). The mounting block (23) has two positioning holes (231) on its front. The inner wall of the positioning hole (231) is inserted into the outer surface of the positioning pin (241). The outer surface of the positioning pin (241) is provided with a slot (242). The mounting block (232) is slidably connected inside the mounting block (23). The outer surface of the slot (232) is in contact with the inner wall of the slot (242). A connecting rod (233) is fixedly connected to the top of the slot (232). A button (234) is fixedly connected to the top of the connecting rod (233). The button (234) is slidably connected to the top of the mounting block (23). Three springs (235) are fixedly connected to the bottom of the slot (232).

4. A tower crane climbing frame according to claim 3, characterized in that, The top of the card block (232) is fixedly connected to two limiting rods (236), and the inside of the mounting block (23) is fixedly connected to two limiting blocks (237). The inside of the limiting blocks (237) is slidably connected to the outer surface of the limiting rods (236).

5. A tower crane climbing frame according to claim 4, characterized in that, The pulley (25) is rotatably connected to the front of the mounting plate (24) via a self-aligning roller bearing.

6. A tower crane climbing frame according to claim 5, characterized in that, A rubber pad (251) is fixedly connected to the outer surface of the pulley (25).

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