A tower standard joint connecting pin shaft dismounting device

Abstract

The utility model relates to tower crane equipment technical field discloses a tower crane standard section connecting pin shaft dismantling device, including telescopic component, and install the limiting component on telescopic component, install the jacking pin subassembly on limiting component, cooperate through telescopic component, limiting component and jacking pin subassembly, adjust the position of pin shaft limiter through the jack body, and then make the connecting pin shaft of pin shaft limiter to standard part retreat, realize the controllable dismantling of tower crane standard section connecting pin shaft, utilize the hydraulic power of jack to promote pin shaft dismantling, have the advantages of strong stability, time -saving and labour -saving, be applicable to the maintenance of all kinds of tower crane standard section and the scene of disassembling, and the pin shaft limiter ejection can avoid the deformation or damage of connecting pin shaft, can realize nondestructive dismantling, the modular design makes the installation, adjustment step simple, and the worker can master without professional training, improves practicality.

Description

Technical Field

[0001] This utility model relates to the field of tower crane equipment technology, specifically a tower crane standard section connecting pin removal device. Background Technology

[0002] Tower cranes are the most commonly used lifting equipment on construction sites. Also known as "tower cranes," they are constructed by connecting sections (height) together (referred to as "standard sections") to lift construction materials such as steel bars, timber, concrete, and steel pipes. The standard section is an important component of a tower crane and therefore occupies a very important position in the entire tower crane. Tower cranes are large lifting equipment commonly used in construction. Their standard sections are modularly assembled through connecting pins. When maintaining, dismantling, or relocating the tower crane, it is necessary to remove the connecting pins between the standard sections.

[0003] In existing technologies, the removal of the pin shaft is usually done manually by striking it with a sledgehammer or prying it with a crowbar. Traditional methods have the following problems: manual striking requires repeated force, which is labor-intensive and can easily cause worker fatigue. Furthermore, striking or prying takes a long time, which is inefficient and cannot quickly complete the removal. Striking may cause the pin shaft to deform or the standard section rod to be damaged, affecting subsequent use. If the force is not applied properly when prying, the pin shaft may pop out or the tool may slip, causing personal injury. Therefore, we need to propose a device for removing the pin shaft connecting the standard section of a tower crane. Utility Model Content

[0004] The purpose of this utility model is to provide a tower crane standard section connecting pin removal device. The device is fixed in the gap between the members of the tower crane standard section. By applying pressure to the jack, the front end of the jack extends forward, and the connecting pin of the tower crane standard section is pushed backward. It is convenient to use, saves time and effort, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tower crane standard section connecting pin removal device, comprising:

[0006] A telescopic assembly, and a limiting assembly mounted on the telescopic assembly, wherein a top pin assembly is mounted on the limiting assembly, the limiting assembly achieves the clamping of a standard part through the telescopic assembly, and achieves the ejection of a connecting pin on the standard part through the top pin assembly;

[0007] The top pin assembly includes a jack body and a pin limiter. The piston rod end of the jack body is threadedly connected to the pin limiter, and one end of the pin limiter abuts against one end of the connecting pin of the tower crane standard section.

[0008] Preferably, the telescopic assembly includes a horizontal rod and a telescopic rod. The horizontal rod is a cuboid rod with a through hole inside, and a first horizontal limiting plate is fixedly connected to one end of the horizontal rod. The telescopic rod is a cuboid rod adapted to the through hole of the horizontal rod, and a second horizontal limiting plate is fixedly connected to one end of the telescopic rod.

[0009] Preferably, a threaded hole is provided at one end of the outer side of the horizontal bar, and a fastening bolt is installed in the threaded hole. One end of the fastening bolt is movably connected to a guide ring, and a step block is fixedly connected to the guide ring.

[0010] Preferably, a guide bar is fixedly connected to one side of the through hole of the horizontal bar, and guide grooves are provided on both sides of the telescopic rod, and trapezoidal grooves adapted to the step blocks are provided at the bottom of both sets of guide grooves.

[0011] Preferably, the limiting component includes an inclined limiting plate and a connecting plate. The inclined limiting plate is fixedly connected to the upper surface of the connecting plate, and the connecting plate is fixedly connected to one end of the upper surface of the horizontal bar. A jack base for mounting the jack body is fixedly connected to the side of the connecting plate facing the telescopic bar.

[0012] Preferably, the curvature of the first horizontal limiting plate, the second horizontal limiting plate, and the inclined limiting plate are all adapted to the outer wall of the standard tower crane member, and the included angle of the horizontal bar of the inclined limiting plate is the same as the angle of the inclined bar of the standard tower crane section.

[0013] Preferably, the jack base has a slot for inserting the jack body, and one end of the pin limiter has a groove adapted to the connecting pin of the tower crane standard section.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model mainly utilizes the cooperation between the telescopic component, the limiting component, and the top pin component. By adjusting the position of the pin limiter through the jack body, the pin limiter pushes the connecting pin of the standard section backward, enabling the controllable removal of the connecting pin of the tower crane standard section. The pin removal is achieved by using the hydraulic power of the jack, which has the advantages of high stability and saving time and effort. It is suitable for various maintenance and disassembly scenarios of tower crane standard sections. The pin limiter's push-out can prevent deformation or damage to the connecting pin, enabling non-destructive removal. At the same time, the modular design simplifies the installation and adjustment steps, allowing workers to master the process without professional training, thus improving practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the horizontal bar and telescopic bar structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the device of this utility model installed on a standard section of a tower crane.

[0020] In the diagram: 1. Horizontal bar; 2. Telescopic bar; 3. Fastening bolt; 4. First horizontal limit plate; 5. Second horizontal limit plate; 6. Inclined limit plate; 7. Connecting plate; 8. Jack base; 9. Jack body; 10. Pin limiter; 11. Tower crane standard section connecting pin; 12. Guide bar; 13. Guide groove; 14. Trapezoidal groove; 15. Ladder block; 16. Guide ring. Detailed Implementation

[0021] 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 protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a device for removing the connecting pin of a standard section of a tower crane, comprising:

[0023] Telescopic assembly, and a limiting assembly installed on the telescopic assembly. A top pin assembly is installed on the limiting assembly. The limiting assembly achieves the clamping of the standard part through the telescopic assembly and the ejection of the connecting pin on the standard part through the top pin assembly.

[0024] The top pin assembly includes a jack body 9 and a pin limiter 10. The piston rod end of the jack body 9 is threadedly connected to the pin limiter 10, and one end of the pin limiter 10 abuts against one end of the connecting pin 11 of the tower crane standard section.

[0025] The telescopic assembly includes a horizontal rod 1 and a telescopic rod 2. The horizontal rod 1 is a cuboid rod with a through hole inside. One end of the horizontal rod 1 is fixedly connected to a first horizontal limiting plate 4. The telescopic rod 2 is a cuboid rod that fits the through hole of the horizontal rod 1, and one end of the telescopic rod 2 is fixedly connected to a second horizontal limiting plate 5.

[0026] Specifically, by sliding the telescopic rod 2 within the through hole of the horizontal rod 1, the first horizontal limiting plate 4 and the second horizontal limiting plate 5 can easily fit against the outer wall of the column of the tower crane standard section, thereby facilitating the overall stable fixing of the device in the gaps between the members of the tower crane standard section and improving the ease of installation.

[0027] A threaded hole is provided at one end of the horizontal bar 1, and a fastening bolt 3 is installed in the threaded hole. One end of the fastening bolt 3 is movably connected to a guide ring 16, and a step block 15 is fixedly connected to the guide ring 16. A butterfly knob is provided at the end of the fastening bolt 3 outside the horizontal bar 1 for easy application of force. At the same time, by rotating the fastening bolt 3, the position of the step block 15 on the guide ring 16 can be easily moved, thereby facilitating the fixation of the telescopic bar 2 after extension and retraction, and improving the ease of operation.

[0028] A guide bar 12 is fixedly connected to one side of the through hole of the horizontal bar 1. Guide grooves 13 are provided on both sides of the telescopic bar 2, and trapezoidal grooves 14 adapted to the step block 15 are provided at the bottom of both sets of guide grooves 13. The arrangement of guide grooves 13 and guide bars 12 ensures the stability of the telescopic bar 2 movement. At the same time, the contact area between the inclined surface of the step block 15 and the inclined surface of the trapezoidal groove 14 is further increased by using the contact surface of the step block 15 and the trapezoidal groove 14, thereby increasing friction and ensuring the stability of the telescopic bar 2 after extension, and preventing the entire device from falling off the standard section of the tower crane.

[0029] The limiting assembly includes an inclined limiting plate 6 and a connecting plate 7. The inclined limiting plate 6 is fixedly connected to the upper surface of the connecting plate 7. The connecting plate 7 is fixedly connected to one end of the upper surface of the horizontal bar 1. A jack base 8 for mounting the jack body 9 is fixedly connected to the side of the connecting plate 7 facing the telescopic bar 2.

[0030] Specifically, the connecting plate 7 is an H-beam with one inclined side, and its right-angled side is welded and fixed to the upper surface of the horizontal bar 1. The angle of the inclined side is adapted to the inclination angle of the inclined bar of the tower crane standard section, and the height matches the spacing between the inclined bar of the upper section and the horizontal bar 1 of the lower section of the tower crane standard section.

[0031] The curvature of the first horizontal limiting plate 4, the second horizontal limiting plate 5, and the inclined limiting plate 6 are all adapted to the outer wall of the standard tower crane member. The included angle of the horizontal bar 1 of the inclined limiting plate 6 is the same as the angle of the inclined bar of the standard tower crane section. The curvature of the first horizontal limiting plate 4 and the second horizontal limiting plate 5 matches the round column of the standard tower crane section, restricting the lateral movement of the horizontal bar 1 and the telescopic bar 2.

[0032] The jack base 8 has a slot for inserting the jack body 9. One end of the pin limiter 10 has a groove that matches the connecting pin 11 of the tower crane standard section. The jack base 8 is a ring that matches the end of the jack body 9 and is vertically welded to the connecting plate 7 for installing the jack body 9. The pin limiter 10 is cylindrical and has a groove at the front end that matches the connecting pin 11 of the tower crane standard section. It is fixed to the front end of the jack by threads.

[0033] When using this utility model, such as Figure 4As shown, the horizontal bar 1 is placed in the gap of the bar along the pin axis of the tower crane standard section, so that the first horizontal limiting plate 4 is tightly attached to the left column of the tower crane standard section, and the telescopic bar 2 is slid along the horizontal direction so that the second horizontal limiting plate 5 is tightly attached to the right column of the tower crane standard section. Then, the fastening bolt 3 is tightened so that the fastening bolt 3 drives the step block 15 to abut against the trapezoidal groove 14. The friction is increased by the contact between the step block 15 and the inner wall of the trapezoidal groove 14 to fix the position of the telescopic bar 2. At this time, the inclined limiting plate 6 just clamps the inclined bar of the tower crane standard section, and the device is fixed.

[0034] Next, embed and fix the jack body 9 into the slot of the jack base 8. Connect the pin limiter 10 to the front end of the piston rod of the jack body 9 through a thread. Push the piston rod of the jack body 9 so that the arc-shaped groove at the front end of the pin limiter 10 is aligned with and clamps the connecting pin 11 of the tower crane standard section to be removed. Pressurize the jack body 9 with a hydraulic pump so that its piston rod slowly extends and pushes the pin limiter 10 to drive the connecting pin 11 of the tower crane standard section to move backward. After the connecting pin 11 of the tower crane standard section is completely disengaged from the connection of the tower crane standard section, stop pressurizing and remove the connecting pin 11 of the tower crane standard section.

[0035] During disassembly, loosen the fastening bolts 3 to allow the telescopic rod 2 to retract into the through hole of the horizontal rod 1, so that the device can be removed from the gap of the tower crane standard section, completing the dismantling operation. Simultaneously, if... Figure 4 As shown, the upper end of the standard tower crane component is equipped with a crossbar for installing the device (not shown in the figure).

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for removing connecting pins of a standard section of a tower crane, characterized in that, include: A telescopic assembly, and a limiting assembly mounted on the telescopic assembly, wherein a top pin assembly is mounted on the limiting assembly, the limiting assembly achieves the clamping of a standard part through the telescopic assembly, and achieves the ejection of a connecting pin on the standard part through the top pin assembly; The top pin assembly includes a jack body (9) and a pin limiter (10). The piston rod end of the jack body (9) is threadedly connected to the pin limiter (10), and one end of the pin limiter (10) abuts against one end of the connecting pin (11) of the tower crane standard section.

2. The tower crane standard section connecting pin removal device according to claim 1, characterized in that: The telescopic assembly includes a horizontal rod (1) and a telescopic rod (2). The horizontal rod (1) is a cuboid rod with a through hole inside. One end of the horizontal rod (1) is fixedly connected to a first horizontal limiting plate (4). The telescopic rod (2) is a cuboid rod adapted to the through hole of the horizontal rod (1), and one end of the telescopic rod (2) is fixedly connected to a second horizontal limiting plate (5).

3. The tower crane standard section connecting pin removal device according to claim 2, characterized in that: The horizontal bar (1) has a threaded hole at one end on the outside, and a fastening bolt (3) is installed in the threaded hole. One end of the fastening bolt (3) is movably connected to a guide ring (16), and a step block (15) is fixedly connected to the guide ring (16).

4. The tower crane standard section connecting pin removal device according to claim 3, characterized in that: A guide bar (12) is fixedly connected to one side of the through hole of the horizontal rod (1), and guide grooves (13) are provided on both sides of the telescopic rod (2), and trapezoidal grooves (14) adapted to the step block (15) are provided at the bottom of both sets of guide grooves (13).

5. The tower crane standard section connecting pin removal device according to claim 2, characterized in that: The limiting assembly includes an inclined limiting plate (6) and a connecting plate (7). The inclined limiting plate (6) is fixedly connected to the upper surface of the connecting plate (7). The connecting plate (7) is fixedly connected to one end of the upper surface of the horizontal rod (1). A jack base (8) for mounting the jack body (9) is fixedly connected to the side of the connecting plate (7) facing the telescopic rod (2).

6. The tower crane standard section connecting pin removal device according to claim 2, characterized in that: The curvature of the first horizontal limiting plate (4), the second horizontal limiting plate (5), and the inclined limiting plate (6) are all adapted to the outer wall of the standard tower crane member. The included angle of the horizontal bar (1) of the inclined limiting plate (6) is the same as the angle of the inclined bar of the standard tower crane section.

7. The tower crane standard section connecting pin removal device according to claim 5, characterized in that: The jack base (8) has a slot for inserting the jack body (9), and one end of the pin limiter (10) has a groove that matches the connecting pin (11) of the tower crane standard section.

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