Caterpillar track link structure

Abstract

The utility model discloses a caterpillar track link structure, which relates to the technical field of caterpillar components, and comprises two chain links and a pin shaft, each chain link comprises two tread ends, one end of each tread end is provided with a sleeve end, the other end of each tread end is provided with a pin end, the side wall of each sleeve end is provided with a sleeve hole, and each pin end is provided with a pin hole. Due to the fact that interference penetrating is not adopted, the pin shaft can easily penetrate through the sleeve hole of one chain link to be inserted into the pin hole of the other chain link, the sealing ring embedded in the inner ring groove located in the pin hole and close to the outer side can make contact with the check block, and the check block is in threaded connection with the threaded groove through the threaded rod to be adjusted so as to extrude the sealing ring. And a clamping spring piece is further embedded into the end, away from the sealing ring, of the interior of the inner ring groove, so that the clamping spring piece and the check block can achieve the clamping and extruding effect on the sealing ring, and when every two adjacent chain links rotate through the corresponding pin shaft, the outer end, located at the corresponding pin hole, of each chain link can achieve the sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler components, and particularly relates to a crawler track link structure. Background Art

[0002] The insertion and cooperation of the track link and the pin shaft of the crawler play a crucial role in construction machinery. As the basic component unit of the crawler, the track link has a delicate structure and can fit tightly together to form a continuous and strong running belt. The pin shaft is like the backbone of this steel python, accurately inserted between each track link to firmly connect them together.

[0003] This design not only endows the crawler with strong tensile strength and compressive capacity, enabling it to maintain a stable running posture under various harsh working conditions, but also ensures the smoothness and flexibility of the crawler during the running process. The precise cooperation between the track link and the pin shaft enables the crawler to adapt to various complex terrains, such as muddy, rugged, sandy, etc., providing reliable ground support and forward power for construction machinery.

[0004] In addition, the material selection of the track link and the pin shaft is also crucial. They are usually made of high-strength and high-wear-resistant alloy steel, and through strict heat treatment and surface treatment processes to ensure good mechanical properties and corrosion resistance during long-term use. This design not only extends the service life of the crawler, but also improves the overall reliability and economy of construction machinery.

[0005] In summary, the insertion and cooperation of the track link and the pin shaft of the crawler are important guarantees for construction machinery to smoothly carry out various operations, and they jointly constitute an indispensable running system for construction machinery.

[0006] The inventor found the following problems in the prior art that have not been well solved during the implementation of this solution: Although the pin shaft and the link are only inserted and connected, seemingly easy to install, the pin shaft and the link are in interference fit. During installation, a hydraulic device is required for top installation, and during disassembly, a hydraulic device is also required for top disassembly. During the implementation of the project, this kind of hydraulic disassembly and assembly equipment is generally not equipped, and some small hydraulic disassembly and assembly equipment will take a long time for disassembly and assembly due to too small pressure. Therefore, when the track link needs to be replaced due to wear during running and heavy pressure from the idler wheel, the interference fit between the traditional track link and the pin shaft will make it difficult to quickly complete disassembly and assembly on site, affecting the project progress. Summary of the Invention

[0007] The main purpose of the utility model is to provide a crawler track link structure, which can effectively solve the problems in the background art.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A crawler chain track link structure includes a chain link and a pin shaft, the number of the chain links is two, the chain link includes two tread ends, one end of the tread end is provided with a sleeve end, the other end of the tread end is provided with a pin end, the side walls of the sleeve end are drilled with a sleeve hole, the side walls of the pin end are drilled with a pin hole, the pin hole is drilled with an inner ring groove at one end close to the outer side, the outer end of the inner ring groove is embedded with a retaining spring, the inner end of the inner ring groove is embedded with a sealing ring, both ends of the pin shaft are drilled with a threaded groove, both ends of the pin shaft located at the threaded groove position are provided with a block, the side of the block close to the pin shaft is fixed with a threaded rod, and the side of the block away from the threaded rod is drilled with an adjustment groove.

[0010] Preferably, a shaft cylinder is arranged between the sleeve ends, the shaft cylinder is communicated with the sleeve holes of the sleeve ends respectively, and the pin shaft and the threaded rod are respectively passed through and communicated with the shaft cylinder, and the pin shaft and the threaded rod pass through both ends of the shaft cylinder and are respectively passed through and communicated with the sleeve holes.

[0011] Preferably, the inner dimension of the shaft cylinder matches the outer dimension of the pin shaft.

[0012] Preferably, the threaded rods are respectively threadedly connected to the thread grooves.

[0013] Preferably, the two ends of the pin shaft passing through the sleeve hole are respectively inserted into the inside of the pin hole, the side of the stopper away from the threaded rod is respectively in contact with the side wall close to the sealing ring, and the retaining spring is respectively in contact with the side of the sealing ring away from the stopper.

[0014] Preferably, the inner diameters of the retaining spring and the sealing ring are respectively smaller than the inner diameter of the pin hole.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The cam is connected to the threaded groove of the threaded rod and the threaded groove to squeeze the sealing ring during adjustment. A retaining spring is also embedded in the end of the inner ring groove away from the sealing ring, so that the retaining spring and the stopper can clamp and squeeze the sealing ring, so that when the two adjacent chain links rotate through the pin shaft, the outer end portion located at the pin hole position can also have a sealing effect to avoid friction damage caused by dust entering. At the same time, since the stopper is blocked by the retaining spring, it can be connected with the threaded groove of the threaded rod to enable the pin shaft to be stably located between the inner ring groove, the sleeve hole and the shaft cylinder, thereby avoiding the problem of detachment and ensuring the stability of the chain track link during use. Description of the Drawings

[0017] Figure 1 This is a schematic structural diagram of a crawler track link structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the link structure of a crawler track link structure of the present utility model;

[0019] Figure 3 This is a schematic structural diagram between a pin shaft, a stop block, a circlip and a sealing ring of a crawler track link structure of the present utility model;

[0020] Figure 4 This is a schematic separation structure diagram between a pin shaft, a threaded rod, a circlip and a sealing ring of a crawler track link structure of the present utility model.

[0021] In the figure: 1. Link; 11. Tread end; 12. Sleeve end; 121. Sleeve hole; 13. Pin end; 131. Pin hole; 1311. Inner ring groove; 132. Circlip; 133. Sealing ring; 2. Pin shaft; 21. Thread groove; 3. Threaded rod; 31. Stop block; 32. Adjusting groove; 4. Shaft cylinder. Detailed Description of the Invention

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As Figures 1-4 shown, a crawler track link structure includes a link 1 and a pin shaft 2. The number of links 1 is two. The link 1 includes two tread ends 11. One end of each tread end 11 is provided with a sleeve end 12, and the other end of each tread end 11 is provided with a pin end 13. Sleeve holes 121 are respectively drilled on the side walls of the sleeve ends 12, and pin holes 131 are respectively drilled on the side walls of the pin ends 13. Inner ring grooves 1311 are respectively drilled at one end close to the outside in the pin holes 131. Circlips 132 are respectively embedded at the outer ends inside the inner ring grooves 1311, and sealing rings 133 are respectively embedded at the inner ends inside the inner ring grooves 1311. Thread grooves 21 are respectively drilled at both ends of the pin shaft 2. Stop blocks 31 are respectively provided at both ends of the pin shaft 2 at the positions of the thread grooves 21. Threaded rods 3 are respectively fixed on the sides of the stop blocks 31 close to the pin shaft 2, and adjusting grooves 32 are respectively drilled on the sides of the stop blocks 31 away from the threaded rods 3.

[0024] Specifically, a shaft cylinder 4 is arranged between the sleeve ends 12. The shaft cylinder 4 is respectively communicated with the sleeve holes 121 of the sleeve ends 12, and the pin shaft 2 and the threaded rod 3 respectively penetrate through the shaft cylinder 4 and are communicated with the sleeve holes 121 through both ends of the shaft cylinder 4. The inner dimension of the shaft cylinder 4 matches the outer dimension of the pin shaft 2, which is convenient for installing the pin shaft 2.

[0025] Specifically, the threaded rod 3 is threadedly connected to the threaded groove 21 respectively. The two ends of the pin shaft 2 passing through the sleeve hole 121 are respectively inserted into the interior of the pin hole 131. The side walls of the stopper 31 away from the threaded rod 3 are respectively in contact with the side walls of the sealing ring 133 close to them. The snap spring members 132 are respectively in contact with the side of the sealing ring 133 away from the stopper 31. The distance can be adjusted so that the stopper 31 and the snap spring members 132 cooperate to clamp the sealing ring 133 and form an end seal.

[0026] Specifically, the inner diameter dimensions of the snap spring members 132 and the sealing ring 133 are respectively smaller than the inner diameter dimension of the pin hole 131.

[0027] Working principle:

[0028] Since it is not an interference fit, after the pin shaft 2 is threadedly connected to the threaded rod 3 through the threaded groove 21, it is inserted from the pin hole 131 on one side and then inserted into the pin hole 131 on the other side. During this process, it penetrates through the sleeve hole 121 and the shaft cylinder 4. The sealing ring 133 is embedded at one end close to the stopper 31 inside the inner ring groove 1311, while the snap spring members 132 are embedded at one end away from the sealing ring 133 inside the inner ring groove 1311 through a pair of pliers. A hexagon bolt is inserted into the adjustment groove 32 and rotated, so that the stopper 31 can approach the sealing ring 133 and cooperate with the snap spring members 132 to form a clamping and squeezing effect. When the adjacent two chain links 1 rotate through the pin shaft 2, the outer end part at the position of the pin hole 131 can also play a sealing effect, preventing dust from entering and causing friction damage. At the same time, since the stopper 31 is blocked by the snap spring members 132, the pin shaft 2 can be stably located between the inner ring groove 1311, the sleeve hole 121 and the shaft cylinder 4 through the connection between the threaded rod 3 and the threaded groove 21, avoiding the problem of detachment and ensuring the stability of the track link during use.

[0029] The circuits, electronic components and control modules involved are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0030] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A crawler track link structure, comprising a link (1) and a pin shaft (2), characterized in that: The number of the link sections (1) is two. The link section (1) includes two tread ends (11). One end of each tread end (11) is provided with a sleeve end (12), and the other end of each tread end (11) is provided with a pin end (13). A sleeve hole (121) is drilled in the side wall of each sleeve end (12), and a pin hole (131) is drilled in the side wall of each pin end (13). An inner ring groove (1311) is drilled at one end near the outer side inside the pin hole (131). A circlip (132) is embedded at the outer side end inside the inner ring groove (1311), and a sealing ring (133) is embedded at the inner side end inside the inner ring groove (1311). Thread grooves (21) are drilled at both ends of the pin shaft (2). At both ends of the pin shaft (2) at the position of the thread grooves (21), a stop block (31) is provided. A threaded rod (3) is fixed to the side of each stop block (31) close to the pin shaft (2), and an adjustment groove (32) is drilled in the side of each stop block (31) away from the threaded rod (3).

2. The structure of a crawler track link according to claim 1, wherein: An axle tube (4) is arranged between the sleeve ends (12). The axle tube (4) communicates with the sleeve holes (121) of the sleeve ends (12) respectively, and the pin shaft (2) and the threaded rods (3) penetrate through the axle tube (4) respectively and communicate with each other. The two ends of the pin shaft (2) and the threaded rods (3) passing through the axle tube (4) communicate with the sleeve holes (121) respectively through penetration.

3. The structure of a crawler track link according to claim 2, characterized in that: The inner dimension of the axle tube (4) matches the outer dimension of the pin shaft (2).

4. A crawler track link structure according to claim 1, characterized in that: The threaded rods (3) are respectively in threaded connection with the thread grooves (21).

5. A crawler track link structure according to claim 1, characterized in that: The two ends of the pin shaft (2) passing through the sleeve holes (121) are respectively inserted into the inside of the pin holes (131). The side walls of the stop blocks (31) away from the threaded rods (3) are respectively in contact with the side walls of the sealing rings (133) close to them, and the circlips (132) are respectively in contact with the side walls of the sealing rings (133) away from the stop blocks (31).

6. A crawler track link structure according to claim 1, characterized in that: The inner diameter dimensions of the circlips (132) and the sealing rings (133) are respectively smaller than the inner diameter dimension of the pin holes (131).

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