Self-adapting multi-pitch transmission special-shaped chain

Abstract

The utility model relates to chain technical field, and disclose a kind of self-adapting multi-pitch transmission special-shaped chain, including several outer chain plates, several outer chain plates are a group and are horizontally opposite, the front end of each pin shaft side wall is equipped with first jack, two the bolt is respectively inserted in adjacent first jack, the middle part of second connecting block top surface is equipped with threaded hole, the middle part of first connecting block is connected with bolt with screw thread, the lower end of bolt is connected in threaded hole with screw thread. The device can twist bolt by socket wrench, socket wrench and bolt head are closely combined, and it is not easy to appear slip phenomenon, so even if chain surface is coated with lubricating oil, it can also ensure that bolt is twisted smoothly, greatly facilitate the dismounting operation of outer chain plate, significantly improve the dismounting efficiency, the lower end of bolt can be accurately guided using guide opening, to ensure that bolt can be accurately inserted into first jack, to further improve the dismounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chain technology, and in particular to an adaptive multi-pitch transmission irregular chain. Background Technology

[0002] Chains are mostly used for mechanical transmission or traction. They are usually made of metal links or rings. Chains are generally composed of chain plates, chain pins and bushings. The composition of chain components varies depending on the specific application.

[0003] For example, Chinese patent application number CN202322462612.X describes a low-noise variable pitch chain, including transition links. Limiting blocks are installed on the outer sides of two sets of transition links. An inner link is installed on the front of one set of transition links, and an outer link is installed on the back of the inner link, with the outer link located to the right of the transition links. This device reduces friction between the chain and other components, reduces noise caused by friction, reduces chain wear, and increases the chain's lifespan.

[0004] Regarding the above-mentioned and existing related technologies, the inventor believes that the following defects often exist: When installing the device, tools such as needle-nose pliers are required to install the pin. The cotter pin is not only small in size, but also requires a certain amount of pushing or pulling force during disassembly and assembly. However, the area that needle-nose pliers and other tools can grip on the cotter pin is small, and the chain generally needs to be lubricated. Therefore, when inserting or pulling out the cotter pin, it is easy for the needle-nose pliers to fall off the cotter pin, resulting in the need for multiple attempts and reducing the efficiency of disassembly and assembly of the pin. Utility Model Content

[0005] The technical problem to be solved by this utility model is that in the prior art, tools such as needle-nose pliers are easy to fall off the cotter pin, requiring multiple attempts, which reduces the efficiency of disassembling and assembling the pin. To address this, we propose an adaptive multi-pitch transmission irregular chain.

[0006] To achieve the above objectives, this application adopts the following technical solution: an adaptive multi-pitch transmission irregular chain, comprising several outer chain plates, which are arranged in pairs and horizontally opposite each other. An inner chain plate is provided on the inner side of two adjacent outer chain plates near their opposing ends. A pin is fixedly connected to the left and right sides of the inner side of each outer chain plate. A roller is sleeved in the middle of the pin. The front end of each pin is movably sleeved on the left and right sides of the front side of the outer chain plate and extends to the outside. A first insertion hole is opened at the front end of the sidewall of each pin. A first connecting block is provided at the top of the front side of the outer wall of each outer chain plate. Pins are fixedly connected to the left and right sides of the bottom surface of the first connecting block. Two pins are respectively inserted into adjacent first insertion holes. A second connecting block is fixedly connected to the bottom of the front side of the outer chain plate. A threaded hole is opened in the middle of the top surface of the second connecting block. A bolt is threadedly connected to the middle of the first connecting block, and the lower end of the bolt is threaded into the threaded hole.

[0007] Preferably, the outer chain plate has outer shaft holes on both the left and right sides of its front side, and the front ends of the two pins are respectively inserted into the outer shaft holes on the left and right sides.

[0008] Preferably, the outer link plate is composed of a first outer link and a second outer link, the second outer link is disposed on the front side of the first outer link, the two outer shaft holes are respectively opened on the left and right sides of the second outer link, the first connecting block is disposed on the top of the front side of the second outer link, and the second connecting block is fixedly connected to the bottom of the front side of the second outer link.

[0009] Preferably, the inner chain plate has a first inner shaft hole on both the left and right sides of the rear side, and a second inner shaft hole on both the left and right sides of the front side, and each pin is inserted into the adjacent first inner shaft hole and second inner shaft hole.

[0010] Preferably, the inner link plate is composed of a first inner link and a second inner link, the second inner link is disposed on the front side of the first inner link, the two first inner shaft holes are respectively opened on the left and right sides of the first inner link, and the two second inner shaft holes are respectively opened at both ends of the second inner link.

[0011] Preferably, the top of the second connecting block is provided with a second insertion hole on both the left and right sides, the lower end of the pin extends through to the outside of the bottom of the pin shaft, and the lower ends of the two pins are respectively inserted into the adjacent second insertion holes.

[0012] Preferably, a counterweight is fixedly connected to the rear side of each of the first outer links, and wear-resistant rubber strips are fixedly connected to the surfaces of the first connecting block, the second connecting block, and the counterweight.

[0013] Preferably, a guide opening is provided on the top of the outer wall side surface of the pin and near the front end, the bottom of the guide opening is connected to the top of the first insertion hole 5, and the guide opening is conical in shape.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] In this invention, the socket wrench fits tightly against the bolt head during the bolt tightening process, making it less prone to slippage. Therefore, even if the chain surface is coated with lubricating oil, it can still ensure smooth bolt tightening, greatly facilitating the disassembly and assembly of the outer chain plate and significantly improving disassembly and assembly efficiency.

[0016] In this invention, the guide opening can be used to precisely guide the lower end of the pin, ensuring that the pin can be accurately inserted into the first socket, thereby further improving the efficiency of disassembly and assembly. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the outer chain plate in this utility model;

[0020] Figure 3 This is a schematic diagram of the inner chain plate in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first connecting block in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the first outer link in this utility model.

[0023] Legend: 1. Outer link plate; 101. Outer shaft hole; 102. First outer link; 103. Second outer link; 2. Inner link plate; 201. First inner shaft hole; 202. Second inner shaft hole; 203. First inner link; 204. Second inner link; 3. Pin; 4. Roller; 5. First insertion hole; 6. First connecting block; 7. Pin; 8. Second connecting block; 801. Second insertion hole; 9. Threaded hole; 10. Bolt; 11. Counterweight; 12. Guide opening. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0025] Reference Figure 1-5 As shown, this utility model provides a technical solution: an adaptive multi-pitch transmission irregular chain, including several outer chain plates 1, which are arranged in pairs and horizontally opposite each other. An inner chain plate 2 is provided on the inner side of adjacent outer chain plates 1 near their opposing ends. Pins 3 are fixedly connected to the left and right sides of the inner side of each outer chain plate 1. A roller 4 is sleeved in the middle of the pin 3. The front end of each pin 3 is movably sleeved on the left and right sides of the front of the outer chain plate 1 and extends to the outside. The front end of the side wall of shaft 3 is provided with a first insertion hole 5. The top of the front side of the outer wall of each outer link plate 1 is provided with a first connecting block 6. The left and right sides of the bottom surface of the first connecting block 6 are fixedly connected with pins 7. The two pins 7 are respectively inserted into the adjacent first insertion hole 5. The bottom of the front side of the outer wall of the outer link plate 1 is fixedly connected with a second connecting block 8. The middle of the top surface of the second connecting block 8 is provided with a threaded hole 9. The middle of the first connecting block 6 is threadedly connected with a bolt 10. The lower end of the bolt 10 is threadedly connected into the threaded hole 9.

[0026] In order to allow the pin 3 to be movably sleeved on the front side of the outer link plate 1, the left and right sides of the front side of the outer link plate 1 are provided with outer shaft holes 101, and the front ends of the two pins 3 are respectively inserted into the left and right outer shaft holes 101.

[0027] To allow the front side of the outer link plate 1 to be detached, the inner link plate 2 can be removed from the outer link plate 1. The outer link plate 1 is composed of a first outer link 102 and a second outer link 103. The second outer link 103 is located on the front side of the first outer link 102. Two outer shaft holes 101 are respectively opened on the left and right sides of the second outer link 103. A first connecting block 6 is located on the top of the front side of the second outer link 103, and a second connecting block 8 is fixedly connected to the bottom of the front side of the second outer link 103.

[0028] In order to enable the inner chain plate 2 to rotate on the pin 3, a first inner shaft hole 201 is provided on the left and right sides of the rear side of the inner chain plate 2, and a second inner shaft hole 202 is provided on the left and right sides of the front side of the inner chain plate 2. Each pin 3 is inserted into the adjacent first inner shaft hole 201 and second inner shaft hole 202.

[0029] In order to allow the teeth of the sprocket to be inserted into the inner link plate 2, the inner link plate 2 is composed of a first inner link 203 and a second inner link 204. The second inner link 204 is located on the front side of the first inner link 203. Two first inner shaft holes 201 are respectively opened on the left and right sides of the first inner link 203, and two second inner shaft holes 202 are respectively opened at both ends of the second inner link 204.

[0030] To improve the stability of the lower end of the pin 7, a second insertion hole 801 is provided on both the left and right sides of the top of the second connecting block 8. The lower end of the pin 7 extends through to the outside of the bottom of the pin 3, and the lower ends of the two pins 7 are respectively inserted into the adjacent second insertion holes 801.

[0031] To ensure that the weight of the chain is balanced, a counterweight 11 is fixedly connected to the rear side of each first outer link 102. Wear-resistant rubber strips are fixedly connected to the surfaces of the first connecting block 6, the second connecting block 8, and the counterweight 11.

[0032] In order to accurately and quickly insert the pin 7 into the first socket 5, a guide opening 12 is provided on the top of the outer wall side surface of the pin 3 near the front end. The bottom of the guide opening 12 is connected to the top of the first socket 5, and the guide opening 12 is conical in shape. The guide opening 12 has a structure with a large diameter at the top and a small diameter at the bottom.

[0033] Working principle: During chain assembly and disassembly, a socket wrench can be used to precisely turn bolt 10, unscrewing its lower end from the threaded hole 9. This releases the bolt 10's constraint on the first connecting block 6. Then, pull the first connecting block 6 upwards, allowing the pin 7 to be easily pulled out of the first insertion hole 5, thus releasing the pin 3's fixation. The second outer link 103 can then be easily removed from the pin 3. Conversely, when installing the second outer link 103, first place it on the pin 3, then insert the pin 7 from above into the first insertion hole 5 to fix the pin 3. Next, use a socket wrench to tighten bolt 10, ensuring a tight threaded connection between its lower end and the threaded hole 9, firmly securing the first connecting block 6 and preventing upward displacement, thus completing the stable installation of the second outer link 103 on the pin 3. During the tightening of bolt 10, the socket wrench, due to its tight fit with the bolt head, is less prone to slippage. Even with lubricant applied to the chain surface, it ensures smooth tightening of bolt 10, greatly facilitating the disassembly and assembly of the outer chain plate 1 and significantly improving efficiency. Furthermore, when inserting pin 7 into the first insertion hole 5 from above, the lower end of pin 7 easily inserts into the guide opening 12, which then precisely guides the lower end of pin 7, ensuring accurate insertion into the first insertion hole 5. After chain installation, the first connecting block 6, the second connecting block 8, and the counterweight 11 remain in contact with other components. During chain operation, these components effectively reduce friction between the chain and other components, thereby reducing the chain's wear rate and extending its service life. Simultaneously, the wear-resistant rubber strip reduces noise generated during friction, improving the smoothness and quietness of chain operation.

[0034] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An adaptive multi-pitch transmission irregular chain, characterized in that, The device includes several outer chain plates, which are arranged in pairs and horizontally opposite each other. An inner chain plate is provided on the inner side of each pair of adjacent outer chain plates near their opposing ends. A pin is fixedly connected to the left and right sides of the inner side of each outer chain plate. A roller is fitted onto the middle of the pin. The front end of each pin is movably fitted onto the left and right sides of the front of the outer chain plate and extends to the outside. A first insertion hole is opened at the front end of the sidewall of each pin. A first connecting block is provided at the top of the front side of the outer wall of each outer chain plate. Pins are fixedly connected to the left and right sides of the bottom surface of the first connecting block. Two pins are respectively inserted into adjacent first insertion holes. A second connecting block is fixedly connected to the bottom of the front side of the outer wall of the outer chain plate. A threaded hole is opened in the middle of the top surface of the second connecting block. A bolt is threadedly connected to the middle of the first connecting block, and the lower end of the bolt is threaded into the threaded hole.

2. The adaptive multi-pitch transmission irregular chain according to claim 1, characterized in that: The outer chain plate has outer shaft holes on both the left and right sides of its front side, and the front ends of the two pins are respectively inserted into the outer shaft holes on the left and right sides.

3. The adaptive multi-pitch transmission irregular chain according to claim 2, characterized in that: The outer link plate is composed of a first outer link and a second outer link. The second outer link is located on the front side of the first outer link. The two outer shaft holes are respectively opened on the left and right sides of the second outer link. The first connecting block is located on the top of the front side of the second outer link, and the second connecting block is fixedly connected to the bottom of the front side of the second outer link.

4. The adaptive multi-pitch transmission irregular chain according to claim 1, characterized in that: The inner chain plate has a first inner shaft hole on both the left and right sides of the rear side, and a second inner shaft hole on both the left and right sides of the front side. Each pin is inserted into the adjacent first inner shaft hole and second inner shaft hole.

5. The adaptive multi-pitch transmission irregular chain according to claim 4, characterized in that: The inner link plate is composed of a first inner link and a second inner link. The second inner link is located on the front side of the first inner link. Two first inner shaft holes are respectively opened on the left and right sides of the first inner link, and two second inner shaft holes are respectively opened at both ends of the second inner link.

6. The adaptive multi-pitch transmission irregular chain according to claim 1, characterized in that: The second connecting block has a second insertion hole on both the left and right sides of the top. The lower end of the pin extends through to the outside of the bottom of the pin shaft, and the lower ends of the two pins are respectively inserted into the adjacent second insertion holes.

7. The adaptive multi-pitch transmission irregular chain according to claim 3, characterized in that: A counterweight is fixedly connected to the rear side of each of the first outer links, and wear-resistant rubber strips are fixedly connected to the surfaces of the first connecting block, the second connecting block, and the counterweight.

8. The adaptive multi-pitch transmission irregular chain according to claim 7, characterized in that: A guide opening is provided at the top of the outer wall side surface of the pin and near the front end. The bottom of the guide opening is connected to the top of the first insertion hole. The guide opening is conical in shape.

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