Driven chain wheel transmission structure

Abstract

The utility model provides a driven chain wheel transmission structure which comprises a central mother shaft, and a central son shaft is fixedly connected outside the central mother shaft. The utility model relates to a driven chain wheel transmission structure which is characterized in that firstly, a device is assembled for use, then a cavity is filled with a proper amount of lubricating oil through a liquid injection hole, then a threaded plug is screwed up to seal the liquid injection hole, and when a gear body rotates, the gear body is in contact transmission with a chain, so that the gear body is driven to rotate. The temperature of the metal gear body is increased, the interior of the cavity is increased and expanded synchronously, lubricating oil in the cavity flows out of the oil outlet hole through the one-way valve, and through linkage of the gear body and a chain, the lubricating oil infiltrates the outer portion of the chain and the outer portion of the gear body; the gear body is wrapped by the lubricating liquid during use, so that friction force is reduced, durability is improved, meanwhile, the time of manual overhauling can be prolonged, and the number of times of maintenance and maintenance cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprocket transmission, and in particular relates to a passive sprocket transmission structure. Background Art

[0002] Chain drive is a transmission method that transmits the motion and power of a driving sprocket with a special tooth shape to a driven sprocket with a special tooth shape through a chain.

[0003] The existing authorization number is CN220060432U, which discloses a passive sprocket transmission structure, including: multiple rows of sprockets, two bearings, a central shaft and a retaining spring; the inner diameter of the inner shaft channel of the multiple rows of sprockets is a structure that is large at both ends and small in the middle, and the inner diameter of the smaller part is larger than the outer diameter of the central shaft; the two bearings can be symmetrically arranged in the two ends of the inner shaft channel respectively; the central shaft can be penetrated through the shaft holes of the two bearings; the multiple rows of sprockets can be installed on the central shaft with the help of the two bearings; the retaining spring is arranged at the end of the central shaft to limit the multiple rows of sprockets and the two bearings on the central shaft. The passive sprocket transmission structure provided by the utility model can withstand greater tension, and there will be no phenomenon of chain breaking due to excessive tension, which effectively guarantees the stable operation of the equipment. However, during the use of the above-mentioned passive sprocket transmission structure, it is often necessary to apply lubricating oil manually to reduce friction, but the manual maintenance process is relatively cumbersome and requires additional labor costs. Therefore, it is necessary to provide a passive sprocket transmission structure to solve the above problems. Utility Model Content

[0004] The technical content of the utility model is to provide a passive sprocket transmission structure.

[0005] In order to solve the above problems, the utility model provides a passive sprocket transmission structure, including: a central mother shaft, the outside of the central mother shaft is fixedly connected with a central sub-shaft, the outside of the central sub-shaft and the central mother shaft are jointly sleeved with a bearing, and the outside of the bearing is fixedly connected with a gear body; a maintenance component, the maintenance component includes a cavity, and the cavity is opened inside the bearing. First, the device is assembled and used, and then the inside of the cavity is filled with a proper amount of lubricating oil through the injection hole, and then the threaded plug is tightened to close the injection hole. When the gear body rotates, the metal gear body is heated up through contact transmission with the chain, and the inside of the cavity is heated up and expanded synchronously, so that the lubricating oil inside the cavity flows out from the oil outlet through the one-way valve, and the gear body and the chain are linked, so that the lubricating oil penetrates the chain and the outside of the gear body, so that the gear body is wrapped by the lubricating liquid when in use to reduce friction and improve durability. At the same time, it can also extend the time of manpower inspection and maintenance, reduce the number of repairs and reduce maintenance costs.

[0006] As a further solution of the present invention, the maintenance component also includes six oil outlet holes, which are evenly opened on the inner wall of the cavity. The six oil outlet holes all penetrate to the outside of the gear body. The interior of the cavity can be filled with a sufficient amount of lubricating oil, so that the lubricating liquid overflows from the oil outlet holes and lubricates the gear body, thereby reducing friction and increasing service life.

[0007] As a further solution of the present invention, the inside of the six oil outlet holes are fixedly connected with a one-way valve, which can control the lubricating oil inside the cavity to overflow through the oil outlet hole. When the gear body heats up due to long-term use, causing the internal temperature of the cavity to rise, the lubricating liquid can overflow through the one-way valve.

[0008] As a further solution of the utility model, a liquid injection hole is opened on the outside of the gear body, and a threaded plug is rotatably connected to the inside of the liquid injection hole. The threaded plug can be rotated by threads to seal the liquid injection hole.

[0009] As a further solution of the present invention, the exteriors of the central sub-shaft and the central mother shaft are fixedly connected with limiting rings, and the bearing can be completely clamped between the two limiting rings.

[0010] As a further solution of the present invention, the interiors of the six one-way valves can be pushed open by external force, so that the interior of the cavity is connected to the outside. After the interior of the one-way valve is pushed open, the internal air pressure of the cavity can be instantly equalized to that of the outside.

[0011] As a further solution of the utility model, a threaded hole is opened inside the central mother shaft, and a threaded head is fixedly connected to the outside of the central sub-shaft. The threaded head can be fully threadedly engaged with the inside of the threaded hole by rotating to achieve a fixed connection between the central mother shaft and the central sub-shaft.

[0012] In summary, the utility model includes at least the following beneficial technical effects:

[0013] First, the utility model records that the device is first assembled for use, and then a proper amount of lubricating oil is filled into the interior of the cavity through the injection hole, and then the threaded plug is tightened to close the injection hole. When the gear body rotates, the metal gear body is heated up through contact transmission with the chain, and the interior of the cavity is heated up and expanded simultaneously, so that the lubricating oil inside the cavity flows out from the oil outlet through the one-way valve, and through the linkage of the gear body and the chain, the lubricating oil penetrates the outside of the chain and the gear body, so that the gear body is wrapped in the lubricating liquid when in use to reduce friction and improve durability. At the same time, it can also extend the time of manpower maintenance, reduce the number of repairs and reduce maintenance costs.

[0014] Second, the utility model records a passive sprocket transmission structure, which records that the central sub-shaft and the central mother shaft can be quickly disassembled and assembled through the threaded head and the threaded hole, which improves flexibility and is also convenient for disassembly during later inspection and maintenance. Compared with traditional snap-on ends, it is neater and more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the external structure of a passive sprocket transmission structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a passive sprocket transmission structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a gear body of a passive sprocket transmission structure of the utility model;

[0019] Figure 4 It is a left-side structural schematic diagram of a passive sprocket transmission structure of the utility model.

[0020] Figure numerals: 1. gear body; 2. center sub-shaft; 3. bearing; 4. center mother shaft; 5. limit ring; 6. threaded hole; 7. threaded head; 8. cavity; 9. oil outlet hole; 10. one-way valve; 11. liquid injection hole; 12. threaded plug. DETAILED DESCRIPTION

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A passive sprocket transmission structure comprises: a central mother shaft 4, a central sub-shaft 2 is fixedly connected to the outside of the central mother shaft 4, a bearing 3 is sleeved on the outside of the central sub-shaft 2 and the central mother shaft 4, and a gear body 1 is fixedly connected to the outside of the bearing 3; a maintenance component, the maintenance component comprises a cavity 8, the cavity 8 is opened inside the bearing 3, the device is first assembled for use, and then a proper amount of lubricating oil is filled into the cavity 8 through the injection hole 11, and then the threaded plug 12 is tightened to close the injection hole 11, when the gear body 1 rotates, the metal gear body 1 is heated up through contact transmission with the chain, and the inside of the cavity 8 is heated up and expanded synchronously, so that the lubricating oil inside the cavity 8 flows out from the oil outlet 9 through the one-way valve 10, and the gear body 1 is linked with the chain, so that the lubricating oil infiltrates the chain and the outside of the gear body 1, so that the gear body 1 is wrapped by the lubricating liquid when in use to reduce friction and improve durability, and at the same time, it can also extend the time of manpower maintenance, reduce the number of maintenance and reduce maintenance costs.

[0022] The maintenance component also includes six oil outlet holes 9, which are evenly opened on the inner wall of the cavity 8. The six oil outlet holes 9 all penetrate the outside of the gear body 1. The inside of the cavity 8 can be filled with a sufficient amount of lubricating oil, so that the lubricating liquid overflows from the oil outlet holes 9 and infiltrates the gear body 1, thereby reducing friction and increasing service life;

[0023] The six oil outlet holes 9 are all fixedly connected with a one-way valve 10, which can control the lubricating oil in the cavity 8 to overflow through the oil outlet hole 9. When the gear body 1 is heated up after long-term use, causing the temperature inside the cavity 8 to rise, the lubricating liquid can overflow through the one-way valve 10.

[0024] The gear body 1 is provided with a liquid injection hole 11 on the outside, and a threaded plug 12 is rotatably connected to the inside of the liquid injection hole 11. The threaded plug 12 can be rotated by a thread to block the liquid injection hole 11.

[0025] The outsides of the central sub-shaft 2 and the central mother shaft 4 are fixedly connected to the limiting rings 5, and the bearing 3 can be completely clamped between the two limiting rings 5;

[0026] The inside of the six one-way valves 10 can be pushed open by external force, so that the inside of the cavity 8 is connected to the outside. After the inside of the one-way valve 10 is pushed open, the internal air pressure of the cavity 8 can be instantly equal to that of the outside.

[0027] It should be noted that the utility model first assembles the device for use, then fills the interior of the cavity 8 with a proper amount of lubricating oil through the injection hole 11, and then tightens the threaded plug 12 to close the injection hole 11. When the gear body 1 rotates, the metal gear body 1 is heated up through contact transmission with the chain, and the interior of the cavity 8 is heated up and expanded simultaneously, so that the lubricating oil inside the cavity 8 flows out from the oil outlet 9 through the one-way valve 10. Through the linkage between the gear body 1 and the chain, the lubricating oil penetrates the outside of the chain and the gear body 1, so that the gear body 1 is wrapped in the lubricating liquid when in use to reduce friction and improve durability. At the same time, it can also extend the time for manpower maintenance, reduce the number of repairs and reduce maintenance costs.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A passive sprocket transmission structure, wherein a threaded hole 6 is provided inside a central mother shaft 4, and a threaded head 7 is fixedly connected to the outside of a central sub-shaft 2. The threaded head 7 can be fully threadedly engaged with the inside of the threaded hole 6 by rotation, thereby realizing a fixed connection between the central mother shaft 4 and the central sub-shaft 2;

[0029] It should be noted that the utility model records that the central sub-shaft 2 and the central mother shaft 4 can be quickly disassembled and assembled through the threaded head 7 and the threaded hole 6, which not only improves flexibility but also facilitates disassembly during later inspection and maintenance. It is neater and more beautiful than traditional snap-on ends.

[0030] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A passive sprocket transmission structure, It is characterized in that include: A central mother shaft (4), the exterior of the central mother shaft (4) being fixedly connected to a central sub-shaft (2), the exteriors of the central sub-shaft (2) and the central mother shaft (4) being jointly sleeved with a bearing (3), the exterior of the bearing (3) being fixedly connected to a gear body (1); A maintenance component, the maintenance component comprising a cavity (8), wherein the cavity (8) is opened inside the bearing (3).

2. A passive sprocket transmission structure according to claim 1, Features: The maintenance component further comprises six oil outlet holes (9), the six oil outlet holes (9) are evenly arranged on the inner wall of the cavity (8), and the six oil outlet holes (9) all penetrate to the outside of the gear body (1).

3. A passive sprocket transmission structure according to claim 2, Features: One-way valves (10) are fixedly connected inside the six oil outlet holes (9).

4. A passive sprocket transmission structure according to claim 1, Features: A liquid injection hole (11) is provided on the outside of the gear body (1), and a threaded plug (12) is rotatably connected to the inside of the liquid injection hole (11).

5. A passive sprocket transmission structure according to claim 1, Features: The exteriors of the central sub-shaft (2) and the central mother shaft (4) are both fixedly connected to limit rings (5).

6. A passive sprocket transmission structure according to claim 3, Features: The interiors of the six one-way valves (10) can be pushed open by external force, so that the interior of the cavity (8) is connected to the outside.

7. A passive sprocket transmission structure according to claim 1, Features: A threaded hole (6) is provided inside the central mother shaft (4), and a threaded head (7) is fixedly connected to the outside of the central sub-shaft (2).

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