Fatigue-resistant and wear-resistant chain

Abstract

The utility model discloses a fatigue-resistant wear-resistant chain which comprises an outer chain plate, and an inner chain plate is arranged on the inner side of the outer chain plate. Rollers are rotationally connected to the inner sides of the inner chain plates, pin shafts penetrate through the middles of the rollers, the two ends of each pin shaft penetrate through the corresponding outer chain plate, one end of each pin shaft is fixed through a cotter pin, balls are rotationally connected to the inner sides of the rollers, and the outer sides of the balls make contact with the outer sides of the pin shafts; and the balls are circularly distributed at equal intervals, and the balls are embedded into the rollers. According to the fatigue-resistant and wear-resistant chain, the contact area between the rollers and the pin shafts is reduced, so that the effect of reducing friction can be achieved, the wear resistance of the chain is improved, the situation that the chain cannot be normally used due to serious abrasion between the rollers and the pin shafts after long-time use is avoided, meanwhile, the service life of the chain is prolonged, the function of lubricating the balls is achieved, and the service life of the chain is prolonged. Furthermore, the abrasion between the balls and the pin shafts is further reduced, so that the chain has high abrasion resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to a fatigue-resistant and wear-resistant chain. Background Technique

[0002] The chain is the main component in chain drive. Generally, it is a metal chain link or ring, mostly used for mechanical transmission and traction. Chains are classified into four types according to different uses and functions: drive chain, conveyor chain, traction chain, and special chain. For example, in the patent with the publication number "CN211175224U" and the patent name "A Wear-resistant Chain", the annular boss is semi-circular and symmetrically located at both ends of the outer link plate in the length direction, which is symmetrically beautiful and easy to manufacture. The first shaft hole is a blind hole. When the outer link plate and the inner link plate are matched, the first shaft hole and the second shaft hole are connected. There is a closed boss on the outer side of the outer link plate, and the first shaft hole does not penetrate the closed boss to form a blind hole. The first shaft hole being a blind hole can protect the end of the chain shaft from rain erosion or external impact, and better ensure the fixation of the chain shaft. However, the following problems still exist in the actual use of the above structure:

[0003] Through the first shaft hole being a blind hole, the above structure can protect the end of the chain shaft from rain erosion or external impact, and better ensure the fixation of the chain shaft. However, after the chain is used for a long time, wear will occur between the roller and the pin shaft due to friction. Since the existing chain has insufficient wear resistance, the wear-resistant effect is relatively poor, resulting in a relatively short service life of the chain.

[0004] Therefore, we proposed a fatigue-resistant and wear-resistant chain that can well solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fatigue-resistant and wear-resistant chain to solve the problem proposed in the above background technique that after the chain on the current market is used for a long time, wear will occur between the roller and the pin shaft due to friction. Since the existing chain has insufficient wear resistance, the wear-resistant effect is relatively poor, resulting in a relatively short service life of the chain.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a fatigue-resistant and wear-resistant chain, including an outer link plate, and an inner link plate is arranged inside the outer link plate;

[0007] It further includes: a roller is rotatably connected inside the inner link plate. At the same time, a pin shaft passes through the middle of the roller, and both ends of the pin shaft respectively penetrate the outer link plate. Moreover, one end of the pin shaft is fixed by an opening pin. A ball is rotatably connected inside the roller, and the outer side of the ball is in contact with the outer side of the pin shaft.

[0008] Preferably, the balls are circularly and equally spaced, and the balls are embedded inside the roller.

[0009] Preferably, an oil injection port is provided at the front end of the pin shaft, an oil plug is arranged at the injection port of the oil injection port, and the rear end of the oil injection port extends into the pin shaft and is communicated with the oil storage cavity.

[0010] Preferably, the oil storage cavity is arranged inside the pin shaft, and the oil storage cavity is communicated with the oil outlet.

[0011] Preferably, the oil outlets are arranged at equal intervals on the outer side surface of the pin shaft, and the oil outlet ends of the oil outlets extend out of the outer side surface of the pin shaft.

[0012] Preferably, limiting holes are formed in the outer side surfaces of the front and rear ends of the pin shaft, the limiting holes are in snap-fit connection with anti-drop pins, and two groups of anti-drop pins are provided.

[0013] Preferably, the upper end of the anti-drop pin penetrates through the pin hole, and the pin hole is formed in the upper surface of the outer link plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: the fatigue-resistant and wear-resistant chain not only reduces the contact area between the roller and the pin shaft, thereby reducing friction, improving the wear resistance of the chain, avoiding serious wear between the roller and the pin shaft after long-term use, and making the chain unable to be used normally, but also prolongs the service life of the chain, and realizes the lubrication of the ball, further reducing the wear between the ball and the pin shaft, so that the chain has high wear resistance. The specific content is as follows:

[0015] (1) When the roller rotates during operation, it will also drive the ball to rotate together, and the ball will rotate by itself when it rubs against the pin shaft. By reducing the contact area between the roller and the pin shaft, the friction can be reduced, the wear resistance of the chain can be improved, and the chain can be prevented from being unable to be used normally due to serious wear between the roller and the pin shaft after long-term use. At the same time, the service life of the chain is prolonged;

[0016] Furthermore, the self-rotation of the ball also reduces the resistance during operation, effectively improving the transmission performance of the chain. After the friction is reduced, the fatigue resistance effect of the chain is better, the service time of the chain can be prolonged, and the efficiency can be improved;

[0017] The lubricating oil is injected into the oil injection port through the oil injection port, enters the oil storage cavity through the oil injection port and is stored, and then the oil plug can be inserted into the oil injection port to seal it, thereby preventing the lubricating oil in the oil injection port from leaking out;

[0018] (2) The lubricating oil at the oil outlet end of the oil outlet is smeared on the ball by the contact between the end point of the ball and the oil outlet end of the oil outlet. Through the self-rotation of the ball, the lubricating oil is evenly smeared on the ball, thereby realizing the lubrication of the ball, further reducing the wear between the ball and the pin shaft, and making the chain have high wear resistance;

[0019] By using the lower end of the anti - detachment pin to penetrate through the limiting hole, a clamping connection is formed with the limiting hole, thereby achieving the effect of limiting, and further realizing the function of fastening the pin shaft. This can further improve the stability of the pin shaft connection, make the pin shaft connection more firm, not easily loosen, and thus ensure the normal operation of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front - view structural schematic diagram of the present utility model;

[0021] Figure 2 It is an exploded structural schematic diagram of the present utility model;

[0022] Figure 3 It is a bottom - view structural schematic diagram of the pin shaft of the present utility model;

[0023] Figure 4 It is a sectional - view structural schematic diagram of the pin shaft of the present utility model;

[0024] Figure 5 For the present utility model Figure 4 The enlarged structural schematic diagram at position A in it;

[0025] Figure 6 It is a sectional - view structural schematic diagram of the connection between the roller and the ball of the present utility model.

[0026] In the figure: 1, outer link plate; 2, inner link plate; 3, roller; 4, pin shaft; 5, anti - detachment pin; 6, pin hole; 7, limiting hole; 8, oil injection port; 9, oil plug; 10, oil storage cavity; 11, oil outlet; 12, ball. SPECIFIC EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1 - 6 , the present utility model provides the following technical solutions:

[0029] Embodiment 1: To solve the problem that after the chain is used for a long time in the prior art, wear will occur between the roller 3 and the pin shaft 4 due to friction. Since the existing chain has insufficient wear resistance, the wear resistance effect is relatively poor, resulting in a relatively short service life of the chain. Therefore, the following solution is disclosed, including an outer link plate 1, and an inner link plate 2 is arranged inside the outer link plate 1; further including: a roller 3 is rotatably connected inside the inner link plate 2, and a pin shaft 4 passes through the middle of the roller 3, and both ends of the pin shaft 4 respectively pass through the outer link plate 1, and one end of the pin shaft 4 is fixed by a split pin, and a ball 12 is rotatably connected inside the roller 3, and the outer side of the ball 12 contacts the outer side of the pin shaft 4;

[0030] First, the chain is composed of an outer link plate 1, an inner link plate 2 and a roller 3, and the outer link plate 1, the inner link plate 2 and the roller 3 are fixed by a pin shaft 4 to form a chain mechanism. At the same time, when the roller 3 operates and rotates, it will also drive the ball 12 to rotate together, and the ball 12 will rotate by itself when it rubs against the pin shaft 4. By reducing the contact area between the roller 3 and the pin shaft 4, the effect of reducing friction can be achieved, thereby improving the wear resistance of the chain, avoiding serious wear between the roller 3 and the pin shaft 4 after long-term use and resulting in the chain being unable to be used normally, and at the same time extending the service life of the chain. At the same time, the self-rotation of the ball 12 also reduces the resistance during operation, thereby effectively improving the transmission performance of the chain. And after the friction is reduced, the fatigue resistance effect of the chain is also better, which can extend the use time of the chain and improve the efficiency;

[0031] Embodiment 2: Different from Embodiment 1, this embodiment realizes the function of lubricating the ball 12, thereby further reducing the wear between the ball 12 and the pin shaft 4, so that the chain has high wear resistance. Specifically refer to Figures 3 - 6 , the balls 12 are distributed at equal intervals in a circular shape, and the balls 12 are embedded inside the roller 3. An oil injection port 8 is opened at the front end of the pin shaft 4, and an oil plug 9 is arranged at the injection port of the oil injection port 8. At the same time, the rear end of the oil injection port 8 extends into the pin shaft 4 and is connected to an oil storage cavity 10. The oil storage cavity 10 is opened inside the pin shaft 4, and the oil storage cavity 10 is connected to an oil outlet 11. The oil outlets 11 are opened at equal intervals on the outer side surface of the pin shaft 4, and the oil outlet ends of the oil outlets 11 extend out of the outer side surface of the pin shaft 4;

[0032] During use, lubricating oil can be injected into the oil filling port 8 through the oil filling port 8, and then enter the oil storage cavity 10 through the oil filling port 8 for storage. Subsequently, the oil plug 9 can be inserted into the oil filling port 8 to achieve sealing, thereby preventing the lubricating oil in the oil filling port 8 from leaking. At the same time, the oil storage cavity 10 is interconnected with the oil outlet 11, so that the lubricating oil in the oil storage cavity 10 can flow out through the oil outlet 11. When the roller 3 drives the ball 12 to rotate to the oil outlet end of the oil outlet 11, since the end point of the ball 12 contacts the oil outlet end of the oil outlet 11, the lubricating oil at the oil outlet end of the oil outlet 11 is smeared on the ball 12. Through the self-rotation of the ball 12, the lubricating oil is evenly smeared on the ball 12, thus realizing the function of lubricating the ball 12, further reducing the wear between the ball 12 and the pin shaft 4, and enabling the chain to have high wear resistance. At the same time, an air inlet hole is opened on the oil plug 9 to ensure the balance of the negative pressure in the oil storage cavity 10, so that the oil in the oil storage cavity 10 can drip out normally from the oil outlet 11, thus realizing the effect of slow dripping and preventing the negative pressure in the oil storage cavity 10 from adsorbing the oil and causing it unable to drip out from the oil outlet 11;

[0033] Embodiment 3: Different from Embodiment 2, in this embodiment, it will not easily become loose, thus ensuring the normal operation of the chain and preventing the problem of increased wear between the sprocket and the chain due to loosening. Specifically, refer to Figures 1 - 3 , limiting holes 7 are opened on the outer side surfaces of the front and rear ends of the pin shaft 4, and the limiting holes 7 are in snap-fit connection with the anti-loosening pins 5. Moreover, two groups of anti-loosening pins 5 are provided. The upper ends of the anti-loosening pins 5 penetrate through the pin holes 6, and the pin holes 6 are opened on the upper surface of the outer link plate 1;

[0034] At the same time, pin holes 6 are opened on the surface of the outer link plate 1. Subsequently, the anti-loosening pins 5 are inserted into the pin holes 6, so that the lower ends of the anti-loosening pins 5 penetrate through the limiting holes 7, thus achieving a snap-fit connection with the limiting holes 7 and realizing the limiting effect, thereby realizing the function of fastening the pin shaft 4, further improving the connection stability of the pin shaft 4, making the connection of the pin shaft 4 more firm and not easily becoming loose, thus ensuring the normal operation of the chain and preventing the problem of increased wear between the sprocket and the chain due to loosening.

[0035] The content not described in detail in this specification belongs to the known prior art of those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Fatigue-resistant and wear-resistant chain, including an outer link plate (1), and an inner link plate (2) is arranged inside the outer link plate (1); It is characterized in that It further includes: A roller (3) is rotatably connected inside the inner link plate (2). At the same time, a pin shaft (4) passes through the middle of the roller (3), and both ends of the pin shaft (4) respectively pass through the outer link plate (1). Moreover, one end of the pin shaft (4) is fixed by an opening pin. And a ball (12) is rotatably connected inside the roller (3), and the outer side of the ball (12) contacts the outer side of the pin shaft (4).

2. The fatigue-resistant and wear-resistant chain according to claim 1, characterized in that: The balls (12) are circularly and equidistantly distributed, and the balls (12) are embedded inside the roller (3).

3. The fatigue-resistant and wear-resistant chain according to claim 1, characterized in that: An oil injection port (8) is opened at the front end of the pin shaft (4), and an oil plug (9) is arranged at the injection port of the oil injection port (8). At the same time, the rear end of the oil injection port (8) extends into the pin shaft (4) and is connected to an oil storage cavity (10).

4. The fatigue-resistant and wear-resistant chain according to claim 3, characterized in that: The oil storage cavity (10) is opened inside the pin shaft (4), and the oil storage cavity (10) is connected to an oil outlet (11).

5. The fatigue-resistant and wear-resistant chain according to claim 4, wherein: The oil outlets (11) are equidistantly opened on the outer side surface of the pin shaft (4), and the oil outlet ends of the oil outlets (11) extend out of the outer side surface of the pin shaft (4).

6. The fatigue-resistant and wear-resistant chain according to claim 1, wherein: Limit holes (7) are opened on the outer side surfaces of the front and rear ends of the pin shaft (4), and the limit holes (7) are engaged with anti-detachment pins (5), and there are two groups of anti-detachment pins (5).

7. The fatigue-resistant and wear-resistant chain according to claim 6, characterized in that: The upper end of the anti-detachment pin (5) passes through a pin hole (6), and the pin hole (6) is opened on the upper surface of the outer link plate (1).

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