A quick-connection structure for chain links

Abstract

This utility model discloses a quick-connect structure for chain links, including a connecting mechanism comprising a push plate, a pin, a hole, a round tube, and a U-shaped pin. The hole is located at the top end of the inner link, the pin is slidably connected to the top end of the outer link, the push plate is fixedly connected to the top surface of the pin, the pin is inserted into the hole, the round tube is fixedly connected to the surface end of the outer link, the push plate is fitted into the round tube, and the U-shaped pin is inserted into the side wall of the round tube and the push plate. This utility model improves the overall integrity of the inner and outer links while facilitating disassembly and maintenance of the chain. The U-shaped pin is fixed by a push rod to prevent slippage and separation of the inner and outer links.

Description

Technical Field

[0001] This utility model relates to the field of chain processing technology, specifically to a quick connection structure for chain links. Background Technology

[0002] Chains are generally metal links or rings, and are mostly used for mechanical transmission and traction. They are a commonly used and important product in conveying and rotating equipment. In the production of existing chain products, the chain links are press-fitted together by pins, and the ends are connected by stop parts.

[0003] A search revealed a plastic side-bending chain with publication number CN221525465U, comprising an outer link, an inner link, and a locking plate for fixing the inner link to the outer link. The inner link includes a front link and a rear link, which are rotatably connected. This application, by providing an adjusting rod and adjusting holes on the inner link, allows the front and rear links on the inner link to rotate laterally, thereby enabling the chain to bend to any angle until the front and rear links abut against each other. This significantly reduces the pressure and friction between the inner and outer links during side bending, thus improving service life.

[0004] The inner and outer links of the above-mentioned device are composed of several independent parts combined together to form a chain. When the chain is used for too long, individual parts may fall off. Due to the poor integrity of the chain links, the chain is prone to breakage, and replacement is also quite troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a quick-connect structure for chain links, thereby solving the problems mentioned in the background section. To solve these technical problems, this invention is achieved through the following technical solution:

[0006] This utility model relates to a quick-connect structure for chain links, comprising:

[0007] A connecting mechanism, comprising a push plate, a post, a hole, a round tube, and a U-shaped pin;

[0008] The insertion hole is located at the top end of the inner link, the insertion post is slidably connected to the top end of the outer link, the pressing plate is fixedly connected to the top surface of the insertion post, the insertion post is inserted into the insertion hole, the round tube is fixedly connected to the surface end of the outer link, the pressing plate is fitted into the round tube, and the U-shaped pin is inserted into the side wall of the round tube and the pressing plate.

[0009] Furthermore, the inner link is fixedly connected to a sleeve post, and the outer link is fixedly connected to a semi-circular plate, with the sleeve post fitted inside the semi-circular plate.

[0010] Furthermore, the connecting mechanism also includes a spring, with both ends of the spring fixedly connected to the top of the outer link and the bottom of the pressing plate, respectively.

[0011] Furthermore, the side wall of the circular tube is provided with a slot, the side wall of the pressing plate is provided with an arc groove, and the U-shaped pin passes through the slot and is fitted into the arc groove.

[0012] Furthermore, the U-shaped pin has through holes at both ends, and a rod is inserted into each of the two through holes, with the end of the rod extending out of the through hole.

[0013] Furthermore, the U-shaped pin extends out after being inserted into the slot, and the insert rod is inserted into the through hole and its side wall fits against the side wall of the round tube.

[0014] Furthermore, the end of the insertion rod is provided with threads, and a nut is threadedly connected to the threads.

[0015] This utility model has the following beneficial effects:

[0016] This invention involves fitting the sleeve pin on the inner link into the semi-circular plate, pressing the pressing plate to drive the insert pin into the insertion hole, and then inserting the U-shaped pin into the slot so that the straight wall of the U-shaped pin is fitted into the arc groove and then extends out from the other end of the round tube. This keeps the pressing plate in the round tube and keeps the insert pin inserted into the insertion hole, thereby connecting the inner and outer links together to form a chain. This improves the overall integrity of the inner and outer links while making it easier to disassemble the inner and outer links and to maintain the chain. Attached Figure Description

[0017] 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.

[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 connection mechanism of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 111. Column sleeve; 121. Semicircular plate;

[0022] 210. Press plate; 211. Arc groove; 220. Insert post; 230. Insert hole; 240. Round tube; 241. Slot; 250. U-shaped pin; 260. Spring;

[0023] 310, Insert rod; 311, Thread; 320, Through hole; 330, Nut. 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 protection scope of the present utility model.

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Please see Figure 1-2 As shown, this utility model is a quick-connect structure for chain links, comprising:

[0027] The connecting mechanism includes a push plate 210, a plug 220, a plug hole 230, a round tube 240, and a U-shaped pin 250;

[0028] The insertion hole 230 is located at the top end of the inner link. The insertion post 220 is slidably connected to the top end of the outer link. The pressing plate 210 is fixedly connected to the top surface of the insertion post 220. The insertion post 220 is inserted into the insertion hole 230. The round tube 240 is fixedly connected to the surface end of the outer link. The pressing plate 210 is fitted into the round tube 240. The U-shaped pin 250 is inserted into the side wall of the round tube 240 and the pressing plate 210. Pressing the pressing plate 210 causes the insertion post 220 to slide, so that the insertion post 220 is inserted into the insertion hole 230. Then, the U-shaped pin 250 is inserted into the round tube 240. The straight wall of the U-shaped pin 250 passes through the side wall of the pressing plate 210 and extends out from the other end of the round tube 240. The pressing plate 210 is kept in the round tube 240, so that the insertion post 220 is kept inserted into the insertion hole 230. Thus, the inner link and the outer link are connected together to form a chain.

[0029] The inner link is fixedly connected to a sleeve post 111, and the outer link is fixedly connected to a semi-circular plate 121. The sleeve post 111 is fitted into the semi-circular plate 121. The sleeve post 111 on the inner link is fitted into the semi-circular plate 121 so that the insertion post 220 is aligned with the insertion hole 230.

[0030] The connecting mechanism also includes a spring 260, with its two ends fixedly connected to the top of the outer link and the bottom of the push plate 210, respectively. Pressing the push plate 210 causes the insert 220 to slide, compressing the spring 260. After the U-shaped pin 250 is pulled out, the spring 260 rebounds and automatically ejects the insert 220 from the insertion hole 230, separating the inner link from the outer link.

[0031] The side wall of the round tube 240 has a slot 241, and the side wall of the push plate 210 has an arc groove 211. The U-shaped pin 250 passes through the slot 241 and is fitted into the arc groove 211. After the U-shaped pin 250 is inserted into the slot 241 and its straight wall is fitted into the arc groove 211, it extends out from the other end of the round tube 240, thereby keeping the push plate 210 in the round tube 240 and keeping the insert 220 inserted into the insertion hole 230.

[0032] Working principle: The sleeve 111 on the inner link is fitted into the semi-circular plate 121, aligning the insert 220 with the insertion hole 230. Pressing the actuating plate 210 causes the insert 220 to slide, inserting it into the insertion hole 230 and compressing the spring 260. The U-shaped pin 250 is inserted into the slot 241, and its straight wall is fitted into the arc groove 211 before extending out from the other end of the round tube 240. This keeps the actuating plate 210 in the round tube 240, keeping the insert 220 inserted into the insertion hole 230, thus connecting the inner and outer links to form a chain and increasing the overall connectivity. When maintenance is required, the U-shaped pin 250 is pulled out from the slot 241 and arc groove 211, and the spring 260 rebounds, causing the insert 220 to be pulled out from the insertion hole 230, thereby separating the inner and outer links for convenient and quick maintenance.

[0033] Please see Figure 1-2 As shown, this embodiment, based on the above embodiment, further includes:

[0034] The U-shaped pin 250 has through holes 320 at both ends. A rod 310 is inserted into the two through holes 320. The end of the rod 310 extends out of the through hole 320. After the rod 310 is inserted into the through hole 320, it prevents the U-shaped pin 250 from slipping and causing the inner and outer links to separate.

[0035] After the end of the U-shaped pin 250 is inserted into the slot 241, it extends out. After the insert rod 310 is inserted into the through hole 320, its side wall fits against the side wall of the round tube 240, so that after the insert rod 310 is inserted into the through hole 320, the U-shaped pin 250 and the slot 241 are fixed tightly. There is no gap between the U-shaped pin 250 and the round tube 240, so the U-shaped pin 250 will not shake.

[0036] The end of the insertion rod 310 is provided with a thread 311, and a nut 330 is threadedly connected to the thread 311. After the nut 330 is threadedly fixed to the thread 311, the insertion rod 310 is fixed in the through hole 320, thereby preventing the insertion rod 310 from slipping off.

[0037] Working principle: After the U-shaped pin 250 is inserted into the slot 241, the other end of the slot 241 extends out. After the rod 310 passes through the through hole 320 at the end of the U-shaped pin 250, the side wall of the rod 310 fits against the side wall of the round tube 240, so that there is no gap between the U-shaped pin 250 and the round tube 240 and the U-shaped pin 250 will not wobble. Then, the nut 330 is threaded onto the thread 311 at the end of the rod 310, so that the rod 310 is fixed in the through hole 320, thereby preventing the rod 310 from slipping off.

[0038] 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 utility model to any specific implementation. 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 this 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 quick-connect structure for chain links, characterized in that, include: The connecting mechanism includes a push plate (210), a post (220), a socket (230), a round tube (240), and a U-shaped pin (250). The insertion hole (230) is opened at the top end of the inner link, the insertion post (220) is slidably connected to the top end of the outer link, the pressing plate (210) is fixedly connected to the top surface of the insertion post (220), the insertion post (220) is inserted into the insertion hole (230), the round tube (240) is fixedly connected to the surface end of the outer link, the pressing plate (210) is fitted into the round tube (240), and the U-shaped pin (250) is inserted into the side wall of the round tube (240) and the pressing plate (210).

2. The quick-connect structure for chain links according to claim 1, characterized in that: The inner link is fixedly connected to a sleeve post (111), and the outer link is fixedly connected to a semi-circular plate (121). The sleeve post (111) is fitted into the semi-circular plate (121).

3. The quick-connect structure for chain links according to claim 1, characterized in that: The connecting mechanism also includes a spring (260), the two ends of which are fixedly connected to the top of the outer link and the bottom of the push plate (210), respectively.

4. The quick-connect structure for chain links according to claim 1, characterized in that: The side wall of the round tube (240) is provided with a slot (241), the side wall of the push plate (210) is provided with an arc groove (211), and the U-shaped pin (250) passes through the slot (241) and is fitted into the arc groove (211).

5. The quick-connect structure for chain links according to claim 4, characterized in that: The U-shaped pin (250) has through holes (320) at both ends, and a rod (310) is inserted into the two through holes (320), with the end of the rod (310) extending out of the through hole (320).

6. The quick-connect structure for chain links according to claim 5, characterized in that: The end of the U-shaped pin (250) is inserted into the slot (241) and then extends out. The side wall of the insert rod (310) is inserted into the through hole (320) and then fits against the side wall of the round tube (240).

7. The quick-connect structure for chain links according to claim 5, characterized in that: The end of the insert (310) is provided with a thread (311), and the thread (311) is threaded to a nut (330).

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