A chain link disassembly device

Abstract

The utility model relates to mechanical walking part auxiliary tool technical field discloses a chain track joint dismounting device, angle frame includes coaxial parallel arrangement's first angle frame and second angle frame, and first angle frame is connected with second angle frame through the screw rod that sets up in the edge of angle frame, and both ends of screw rod are equipped with respective locking nut on both sides of first angle frame and second angle frame, the central hole is equipped with in the center of first angle frame, the side of second angle frame's center is equipped with hydraulic cylinder towards first angle frame, and the piston rod push end of hydraulic cylinder faces the central hole, and piston rod and central hole are coaxially arranged, and the liquid supply connector of hydraulic cylinder is connected into the hydraulic supply pipeline.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for mechanical walking parts, and in particular to a track link repair device, specifically a track link disassembly device. Background Technology

[0002] The running gear of construction machinery typically employs a fully hydraulic system. A hydraulic motor drives a reducer, which in turn drives a sprocket. With the aid of track links, this ensures the equipment can move flexibly across various complex terrains. Track links are common components in the running gear of machinery.

[0003] During the production process, the assembly process of the track links is a decentralized assembly followed by pressing. It is not connected one track link at a time. Instead, during assembly, after the positioning pin is inserted into the chain passage of the previous track link, the left chain piece, chain passage, right chain piece, and positioning device are placed in sequence, and then pressed together by a high-pressure machine. Furthermore, the second chain piece is embedded when connected to the first chain passage. The assembled track links are in the shape of a "strip".

[0004] When the assembled track links are installed on mechanical equipment, only one hinge is reserved for final connection. If the running gear malfunctions, the track links need to be disassembled for repair. The entire track can be disassembled simply by using the hinge, making it the only node designed for easy manual disassembly. However, this structural design also presents significant technical challenges: the reserved hinge is the weakest link in the entire track. During field use, if the hinge deforms due to stress and needs replacement, it is necessary to disassemble it from a non-reserved link interface, requiring the removal of the connected track link. The track link structure consists of two high-hardness pins pressed into holes on both sides of the track passage with a large interference fit. The pins and track passages are tightly fitted to withstand enormous tensile, compressive, shear, and impact loads. Based on this press-fit connection structure, it is difficult to remove the locating pins to disassemble it.

[0005] In existing technologies, disassembly typically uses a sledgehammer to strike the connecting pin of the chain link. A pin is used as a punch against the connecting pin, and a sledgehammer is swung to strike the pin, forcefully dislodging the connecting pin and separating the chain links. This method requires at least two operators. In confined work environments, multiple operators are highly susceptible to accidental impacts, and flying metal fragments can cause injury. Furthermore, disassembly often requires multiple people hammering for extended periods, resulting in low efficiency, significant physical exertion on operators, and no guarantee of success. Additionally, the impact force can be transmitted to adjacent chain links and the chain link itself, potentially causing deformation, shortening the lifespan of other components, or even causing irreversible damage.

[0006] In order to disassemble the track links when handling the tracked parts on site and to ensure the safety of personnel, a track link disassembly device is needed to facilitate on-site operations. Utility Model Content

[0007] To address the risks to personal safety, work efficiency, and equipment integrity posed by using a sledgehammer to pry open track links when the pre-reserved hinges cannot be opened normally, this utility model provides a track link disassembly device.

[0008] This utility model is achieved using the following technical solution: A track link disassembly device includes a bracket, comprising a first bracket and a second bracket arranged coaxially and parallel to each other. The first bracket and the second bracket are connected by a screw rod located on the edge of the bracket. Both ends of the screw rod are provided with locking nuts on both sides of the first and second brackets. A central hole is provided in the center of the first bracket. A hydraulic cylinder is installed on the side of the second bracket facing the first bracket. The piston rod of the hydraulic cylinder has its pushing end facing the central hole, and the piston rod is coaxially arranged with the central hole. The hydraulic cylinder's fluid supply connector is connected to a hydraulic fluid supply pipeline.

[0009] In implementation, the system includes two identical, rounded triangular corner brackets. Each bracket comprises a first and a second bracket arranged coaxially and parallel to each other. The first and second brackets are connected by screws located at their edges. Each screw passes through corresponding through holes on the two brackets and is secured with locking nuts. Specifically, each bracket has through holes at its three corners, and the same screw is installed between the opposite corners of the first and second brackets. The three screws are arranged parallel to each other, with locking nuts at both ends of the screws on either side of the first and second brackets. By adjusting the fixed position of the brackets on the screws (the brackets are clamped to the screws by the locking nuts), the distance between the two brackets and the parallelism of each bracket can be adjusted. Furthermore, to eliminate gaps in the threaded joints and prevent loosening under vibration and impact loads, two locking nuts are screwed onto the outer side of each screw on the bracket, achieving self-locking.

[0010] The first bracket has a central hole in the center, which provides space for the connecting pin to come out; A hydraulic cylinder is installed on the side of the second corner frame facing the first corner frame. The bottom of the hydraulic cylinder body is fixed to the center of the second corner frame. The piston rod of the hydraulic cylinder pushes towards the center hole, and the piston rod is coaxial with the center hole. The thrust generated by the hydraulic cylinder is transmitted along the center line to push out the connecting pin.

[0011] A pin abuts against the center of the piston rod's push end face. The pin abuts against the connecting pin of the chain link. The connecting pin is aligned with the central hole. The pin is used as a punch to transmit force. Different specifications of chain links can be adapted by replacing the pins with different specifications. A hydraulic system is used as the power source. The hydraulic cylinder's fluid supply connector is connected to the hydraulic fluid supply pipeline. The hydraulic cylinder is controlled by a hydraulic system handle to achieve precise forward and backward control.

[0012] When using it, place the disassembly device on the chain link to be disassembled. At this time, the chain link is located between the first and second corner brackets. Place the chain plate against the side of the first corner bracket facing the second corner bracket, so that the center hole of the first corner bracket is aligned with the end of the connecting pin to be disassembled. Manually pre-adjust the locking nuts on the three screws so that the first and second corner brackets are parallel and aligned, and tighten the locking nuts.

[0013] Using the pin as a punch, one end rests against the connecting pin, and the other end is close to the end face of the piston rod pushing end of the hydraulic cylinder and located on the axis of the piston rod. Slowly operate the hydraulic system handle, and the piston rod slowly extends, pushing the connecting pin through the pin. Continuously apply pressure until the connecting pin is completely pushed out and disengaged from the center hole of the first bracket. The chain link disassembly is complete.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The track link disassembly device provided by this utility model directly pushes the pin shaft through a hydraulic device, which is simple to operate, labor-saving, and has a disassembly efficiency far higher than the traditional manual support method.

[0015] This device greatly reduces safety risks during operation, effectively protects personnel safety, and avoids secondary damage to track links and other components caused by violent hammering, thus significantly improving the reliability and economy of disassembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] In the diagram: 1. First corner bracket; 2. Second corner bracket; 3. Screw; 4. Locking nut; 5. Hydraulic cylinder; 6. Center hole. Detailed Implementation

[0018] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0019] A track link disassembly device, such as Figure 1As shown: The two corner brackets are identical in shape, both being rounded triangles. Each corner bracket includes a first corner bracket 1 and a second corner bracket 2 arranged coaxially and parallel. The first corner bracket 1 and the second corner bracket 2 are connected by screws 3 located on the edges of the corner brackets. Each screw 3 passes through corresponding through holes on the two corner brackets and is secured by locking nuts 4. Specifically, each corner bracket has through holes at its three corners. The same screw 3 is installed between the opposite corners of the first corner bracket 1 and the second corner bracket 2. The three screws 3 are arranged in parallel, and each end of the screw 3 has a locking nut 4 located on either side of the first corner bracket 1 and the second corner bracket 2. By adjusting the fixed position of the corner bracket on the screws 3 (the corner bracket is clamped onto the screws 3 by the locking nuts 4), the distance between the two corner brackets and the parallelism of each corner bracket can be adjusted. Furthermore, to eliminate gaps in the threaded pair and prevent loosening under vibration and impact loads, two locking nuts 4 are screwed onto the outer side of each screw 3 to achieve self-locking.

[0020] The first bracket 1 has a central hole 6 in the center, which provides space for the connecting pin to come out; A hydraulic cylinder 5 is installed on the side of the second corner frame 2 facing the first corner frame 1. The bottom of the cylinder body of the hydraulic cylinder 5 is fixed in the center of the second corner frame 2. The piston rod of the hydraulic cylinder 5 pushes towards the center hole 6, and the piston rod is coaxial with the center hole 6. The thrust generated by the hydraulic cylinder 5 is transmitted along the center line to push out the connecting pin.

[0021] A pin abuts against the center of the piston rod's push end face. The pin abuts against the connecting pin of the chain link. The connecting pin is aligned with the central hole. The pin is used as a punch to transmit force. Different specifications of chain links can be adapted by replacing the pins with different specifications. Hydraulic cylinder 5 is connected to the hydraulic system and adopts conventional existing technology. Users can select different specifications of hydraulic cylinder 5 according to the specifications of the chain links to be disassembled, which will not be elaborated here. The hydraulic system is used as the power source. The hydraulic cylinder 5's fluid supply connector is connected to the hydraulic fluid supply pipeline. The hydraulic cylinder 5 is controlled by the hydraulic system handle to achieve precise forward and backward control.

[0022] When in use, the disassembly device is placed on the chain link to be disassembled. At this time, the chain link is located between the first bracket 1 and the second bracket 2. The chain plate is placed against the side of the first bracket 1 facing the second bracket 2, so that the center hole 6 of the first bracket 1 is aligned with the end of the connecting pin to be disassembled. The locking nuts 4 on the three screws 3 are manually pre-adjusted so that the first bracket 1 and the second bracket 2 are parallel and aligned, and the locking nuts 4 are tightened.

[0023] Using the pin as a punch, one end rests against the connecting pin, and the other end is close to the end face of the piston rod pushing end of the hydraulic cylinder 5 and located on the axis of the piston rod. Slowly operate the hydraulic system handle, and the piston rod slowly extends, pushing the connecting pin through the pin, continuously applying pressure until the connecting pin is completely pushed out and disengaged from the center hole 6 of the first bracket 1, thus completing the disassembly of the chain link.

[0024] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A track link disassembly device, characterized in that: The bracket includes a first bracket (1) and a second bracket (2) arranged coaxially and in parallel. The first bracket (1) and the second bracket (2) are connected by a screw (3) set on the edge of the bracket. Both ends of the screw (3) are provided with locking nuts (4) on both sides of the first bracket (1) and the second bracket (2). The first corner bracket (1) has a central hole (6) in the center. A hydraulic cylinder (5) is installed on the side of the second corner bracket (2) facing the first corner bracket (1). The piston rod of the hydraulic cylinder (5) is directed towards the center hole (6), and the piston rod is coaxial with the center hole (6). The hydraulic cylinder (5) is connected to the hydraulic supply pipeline.

2. The track link disassembly device according to claim 1, characterized in that: Both corner brackets are rounded triangular in shape. The same screw (3) is installed between the opposite corners of the first corner bracket (1) and the second corner bracket (2). The three screws (3) are arranged in parallel.

3. The track link disassembly device according to claim 2, characterized in that: Each corner bracket has through holes at its three corners. Each screw (3) passes through the corresponding through holes on two corner brackets and is secured by a locking nut (4).

4. The track link disassembly device according to claim 3, characterized in that: Each screw (3) is screwed with two locking nuts (4) on the outside of the bracket.

5. The track link disassembly device according to claim 1, characterized in that: The bottom of the cylinder body of the hydraulic cylinder (5) is fixed in the center of the second corner bracket (2), and the hydraulic cylinder (5) is controlled by the hydraulic system handle.

6. The track link disassembly device according to claim 1, characterized in that: A pin abuts against the center of the end face of the piston rod's pushing end. The pin abuts against the connecting pin of the chain, and the connecting pin is directly opposite the central hole.

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