Chain wheel edge convenient to lubricate

Abstract

The utility model discloses a chain wheel rim convenient to lubricate, which relates to the technical field of chain wheels and comprises a chain wheel body and an automatic lubricating oil discharging mechanism. The automatic lubricating oil discharging mechanism comprises check blocks, guide rods and springs, the check blocks are evenly arranged in the annular oil storage groove in a circular shape, the guide rods are slidably connected into the check blocks, the ends, away from the check blocks, of the guide rods are fixedly connected to the inner wall of the annular oil storage groove, and the surfaces of the guide rods are slidably sleeved with the springs. When the chain rotates, lubricating oil in the annular oil storage groove can be discharged from the interior of the oil discharge hole and flows to the surface of the chain, then the contact position of the chain and the teeth is lubricated in real time, and after the check block and the adjacent teeth rotate to be separated from the surface of the chain, the chain can be separated from the surface of the check block; the spring can release elastic force and push the check block to be clamped into the oil discharge hole to seal the oil discharge hole, and waste caused by the fact that lubricating oil flows out of the oil discharge hole is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sprocket wheels, in particular to a sprocket wheel edge which is convenient for lubrication. Background Art

[0002] A sprocket is a wheel with cog-shaped sprocket teeth, which is used to mesh with accurately pitched blocks on link chains or cables. Sprockets are widely used in mechanical transmission in industries such as chemical industry, textile machinery, escalators, wood processing, multi-story parking garages, agricultural machinery, food processing, instrumentation and petroleum.

[0003] The currently published patent: CN212203033U discloses a self-lubricating sprocket. The barrier ball is located inside the through hole. When the sprocket body rotates, the barrier ball will move in the through hole due to gravity. When the outer surface of the barrier ball fits the support plate, the lubricating oil inside the oil storage cavity will flow into the through hole and then flow out from the through hole to lubricate the meshing point between the sprocket body and the chain. The through hole located on the right side of the sprocket body allows the lubricating oil to flow out slowly, and the lubricating oil flows out along the outer wall of the sprocket body, thereby increasing the lubrication area with the chain, achieving the purpose of self-lubrication, improving work efficiency and saving labor.

[0004] Based on the above search, it was found that the above patent has the following problems when in use: when the self-lubricating sprocket rotates, the barrier ball will cause the movement of the barrier ball in the through hole due to gravity. When the outer surface of the barrier ball fits with the support plate, the lubricating oil inside the oil storage chamber will flow into the through hole to lubricate the meshing point between the sprocket body and the chain. Since the barrier ball generates centrifugal force when it rotates with the sprocket, when the barrier ball and the corresponding tooth rotate to disengage from the chain, the barrier ball will still slide and fit with the support plate due to the centrifugal force. Therefore, the lubricating oil inside the oil storage chamber will be thrown out through the through hole. At this time, the chain is far away from the thrown out lubricating oil, and the lubricating oil cannot flow to the chain surface, so that the chain and sprocket are lubricated, which will cause a waste of lubricating oil. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a sprocket wheel edge that is easy to lubricate, which can solve the problem that the lubricating oil inside the oil storage cavity will be thrown out through the through hole, while the chain is far away from the thrown out lubricating oil, and the lubricating oil cannot flow to the surface of the chain, so that the lubrication of the chain and the sprocket will cause a waste of lubricating oil.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sprocket wheel edge that is easy to lubricate, comprising a sprocket body and an automatic lubricating oil discharge mechanism; a key groove is provided on the inner wall of the sprocket body, the surface of the sprocket body is circular and evenly provided with teeth, and an annular oil storage groove is provided inside the sprocket body; the automatic lubricating oil discharge mechanism comprises a block, a guide rod and a spring, the block is circular and evenly provided inside the annular oil storage groove, the guide rod is slidably connected to the inside of the block, the end of the guide rod away from the block is fixedly connected to the inner wall of the annular oil storage groove, and the spring is slidably sleeved on the surface of the guide rod.

[0007] Preferably, an oil inlet is provided on the surface of the sprocket body, and a threaded groove is provided on the inner wall of the oil inlet.

[0008] Preferably, the internal thread of the oil inlet is connected with a special-shaped screw, and the surface of the special-shaped screw is provided with a hexagonal groove for rotation.

[0009] Preferably, one end of the spring is fixedly connected to the surface of the stopper, and one end of the spring away from the stopper is fixedly connected to the inner wall of the annular oil storage groove.

[0010] Preferably, the surface of the sprocket body is circular and evenly provided with oil drain holes, and the oil drain holes are located in the middle of two adjacent teeth.

[0011] Preferably, the stopper is slidably engaged inside the oil drain hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The lubricating oil in the annular oil storage tank on the wheel side of the sprocket which is easy to lubricate can be discharged from the inside of the oil drain hole and flow to the surface of the chain, thereby instantly lubricating the contact position between the chain and the teeth. When the stopper and its adjacent teeth rotate to the surface that is separated from the chain, the chain will also be separated from the surface of the stopper. At this time, the spring can release the elastic force and push the stopper into the inside of the oil drain hole to seal it, thereby avoiding the waste of lubricating oil flowing out of the oil drain hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall structure of a sprocket wheel edge that is easy to lubricate in the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the sprocket body of the utility model;

[0017] Figure 3 This is a schematic diagram of the surface structure of the special-shaped screw of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the stopper of the utility model.

[0019] Figure numerals: 1, sprocket body; 2, keyway; 3, tooth; 4, annular oil storage tank; 5, oil inlet; 6, special-shaped screw; 7, hexagonal prism groove; 8, stopper; 9, guide rod; 10, spring; 11, oil drain hole. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] See also Figure 1-4 The utility model provides a technical solution: a sprocket wheel edge that is easy to lubricate, including a sprocket body 1 and an automatic lubricating oil removal mechanism, a key groove 2 is provided on the inner wall of the sprocket body 1, and the surface of the sprocket body 1 is circular and evenly provided with teeth 3, an annular oil storage groove 4 is provided inside the sprocket body 1, an oil inlet 5 is provided on the surface of the sprocket body 1, a threaded groove is provided on the inner wall of the oil inlet 5, a special-shaped screw 6 is connected to the internal thread of the oil inlet 5, and a hexagonal prism groove 7 for rotation is provided on the surface of the special-shaped screw 6.

[0025] The staff can add lubricating oil to the inside of the annular oil storage tank 4 through the oil inlet 5, and seal the oil inlet 5 with the special-shaped screw 6. In addition, the setting of the hexagonal prism groove 7 can facilitate the staff to turn the special-shaped screw 6 with a wrench, so that the staff can disassemble and assemble the special-shaped screw 6. After the special-shaped screw 6 seals the oil inlet 5, the surface of the special-shaped screw 6 can be kept level with the surface of the sprocket body 1, thereby ensuring the flatness of the surface of the sprocket body 1.

[0026] The automatic lubricating oil discharge mechanism includes a block 8, a guide rod 9 and a spring 10. The block 8 is circular and evenly arranged inside the annular oil storage groove 4. The guide rod 9 is slidably connected to the inside of the block 8. The end of the guide rod 9 away from the block 8 is fixedly connected to the inner wall of the annular oil storage groove 4. The spring 10 is slidably sleeved on the surface of the guide rod 9. One end of the spring 10 is fixedly connected to the surface of the block 8. The end of the spring 10 away from the block 8 is fixedly connected to the inner wall of the annular oil storage groove 4. The surface of the sprocket body 1 is circular and evenly provided with oil discharge holes 11. The oil discharge holes 11 are located in the middle position of two adjacent teeth 3. The block 8 is slidably clamped inside the oil discharge hole 11.

[0027] During the process of the sprocket body 1 meshing and rotating with the chain, when the block 8 rotates to the lower side, at this time, the chain squeezes the block 8 and makes it slide upward, the block 8 slides upward and is guided by the guide rod 9 to ensure that the block 8 slides vertically up and down, the block 8 slides upward and squeezes the spring 10, at this time, the spring 10 gives the block 8 a downward elastic force, the block 8 slides upward and disengages from the inside of the oil drain hole 11, the lubricating oil in the annular oil storage groove 4 can be discharged from the inside of the oil drain hole 11 and flow to the surface of the chain, thereby instantly lubricating the contact position between the chain and the tooth 3, and when the block After 8 and its adjacent tooth 3 rotate to the surface that is separated from the chain, the chain will also separate from the surface of the block 8. At this time, the spring 10 can release the elastic force and push the block 8 to get stuck in the inside of the oil drain hole 11 to seal it, so as to avoid the lubricating oil from flowing out of the oil drain hole 11 and causing waste. This kind of sprocket dry wheel edge lubrication adopts a point-to-point lubrication method, and forms a uniform and continuous metal film by continuously applying the lubricant on the tooth 3. When the film is reduced, the lubricating oil will lubricate the tooth 3 again, and the cycle will repeat. This lubrication method is carried out in real time, the lubricating medium has strong adhesion to the sprocket body 1, and no splashing is generated.

[0028] Working principle: The sprocket wheel edge that is easy to lubricate, when the block 8 rotates to the lower side, at this time, the chain squeezes the block 8 and makes it slide upward, the block 8 slides upward and is guided by the guide rod 9, the block 8 slides upward and squeezes the spring 10, the block 8 slides upward and disengages from the inside of the oil drain hole 11, the lubricating oil inside the annular oil storage groove 4 can be discharged from the inside of the oil drain hole 11 and flow to the surface of the chain, thereby instantly lubricating the contact position between the chain and the teeth 3, when the block 8 and its adjacent teeth 3 rotate to the surface that is separated from the chain, the chain will also be separated from the surface of the block 8, at this time, the spring 10 can release the elastic force and push the block 8 to get stuck in the inside of the oil drain hole 11 to seal it, thereby avoiding the lubricating oil from flowing out of the oil drain hole 11 and causing waste.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A sprocket wheel edge that is easy to lubricate, characterized in that: include: Sprocket body (1) and automatic lubricating oil removal mechanism; The inner wall of the sprocket body (1) is provided with a keyway (2), the surface of the sprocket body (1) is circular and evenly provided with teeth (3), and the interior of the sprocket body (1) is provided with an annular oil storage groove (4); The automatic lubricating oil discharge mechanism comprises a block (8), a guide rod (9) and a spring (10); the block (8) is circular and evenly arranged inside the annular oil storage groove (4); the guide rod (9) is slidably connected inside the block (8); one end of the guide rod (9) away from the block (8) is fixedly connected to the inner wall of the annular oil storage groove (4); and the spring (10) is slidably sleeved on the surface of the guide rod (9).

2. A sprocket wheel edge that is easy to lubricate according to claim 1, characterized in that: An oil inlet (5) is provided on the surface of the sprocket body (1), and a threaded groove is provided on the inner wall of the oil inlet (5).

3. The sprocket wheel edge that is easy to lubricate according to claim 2, characterized in that: The oil inlet (5) is internally threadedly connected with a special-shaped screw (6), and the surface of the special-shaped screw (6) is provided with a hexagonal column groove (7) for rotation.

4. The sprocket wheel edge that is easy to lubricate according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the surface of the stopper (8), and one end of the spring (10) away from the stopper (8) is fixedly connected to the inner wall of the annular oil storage groove (4).

5. The sprocket wheel edge that is easy to lubricate according to claim 1, characterized in that: The surface of the sprocket body (1) is circular and evenly provided with oil drain holes (11), and the oil drain holes (11) are located in the middle of two adjacent teeth (3).

6. The sprocket wheel edge that is easy to lubricate according to claim 5, characterized in that: The stopper (8) is slidably engaged in the interior of the oil drain hole (11).

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