Self-lubricating gear

Abstract

The utility model relates to the technical field of self-lubricating gears, in particular to a self-lubricating gear which comprises a gear body, an oil storage cavity is formed in the gear body, one side, far away from a sealing block, of the gear body is fixedly connected with a one-way valve used for supplementing oil into the oil storage cavity, and oil outlet cavities are formed in teeth on the gear body. A plurality of oil spraying holes are formed in the side, away from the axis of the gear body, of the oil outlet cavity, an oil discharging groove is formed in the side, facing the oil storage cavity, of the oil outlet cavity, the oil discharging groove communicates the oil outlet cavity with the oil storage cavity, oil storage sponge for reducing oil outlet of the oil spraying holes is fixedly connected to the inner wall of the oil outlet cavity, and a sealing block is detachably and fixedly connected to one side of the gear body. Through the technical scheme, waste of lubricating oil is reduced, the service life of the lubricating oil is prolonged, meanwhile, the production cost is reduced, and the practicability of the gear is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-lubricating gears, in particular to a self-lubricating gear. Background Art

[0002] Gears are mechanical devices used to transmit power and motion. Due to their special tooth structure, they can transmit rotational motion and power to other gears or mechanical devices. Gears will produce a lot of wear and noise during transmission, so when using gears, users usually perform regular lubrication at the tooth root meshing to ensure the normal operation of the gear system and extend its service life. In order to reduce the labor intensity of the staff, self-lubricating gears have emerged. Self-lubricating gears refer to gear systems with self-lubricating functions in their design.

[0003] The self-lubricating gears in the prior art have the following technical problems during use: In the existing self-lubricating gears, springs or components with the same function as springs and compression recovery are usually used to prevent the lubricating oil stored in the gears from leaking when working or stopping, thereby ensuring the long-term use of the oil. However, such special-shaped parts need to be limited and guided during use, which increases the difficulty of manufacturing the gears and thus increases the production cost of the gears. Utility Model Content

[0004] The utility model provides a self-lubricating gear, which reduces the waste of lubricating oil, prolongs the service life of the lubricating oil, reduces the production cost and improves the practicability of the gear.

[0005] The technical solution of the utility model is as follows:

[0006] A self-lubricating gear comprises a gear body, wherein an oil storage cavity is provided in the gear body, a one-way valve for replenishing oil in the oil storage cavity is fixedly connected to the side of the gear body away from the sealing block, an oil outlet cavity is provided in each tooth of the gear body, a plurality of oil spray holes are provided in the oil outlet cavity away from the axis of the gear body, an oil drain groove is provided on the side of the oil outlet cavity facing the oil storage cavity, the oil drain groove connects the oil outlet cavity with the oil storage cavity, an oil storage sponge for reducing oil discharge from the oil spray holes is fixedly connected to the inner wall of the oil outlet cavity, and a sealing block is detachably fixedly connected to one side of the gear body.

[0007] Furthermore, a plurality of barrier grooves are provided in the sealing block, the number of the barrier grooves being the same as the number of teeth of the gear body, and ports on both sides of the barrier grooves are respectively connected to the oil drain groove and the oil storage cavity.

[0008] Furthermore, the sealing block is provided with two hexagonal grooves on a side away from the gear body.

[0009] Furthermore, an oil baffle plate is fixedly connected to the inner wall of the oil outlet cavity to reduce the oil in the oil outlet cavity from flowing back into the oil storage cavity, and the oil baffle plate has an isosceles trapezoidal shape.

[0010] Furthermore, the gear body is provided with a plurality of weight-reducing grooves around the gear body axis.

[0011] Furthermore, the groove length of the barrier groove is greater than the aperture of the oil drain groove.

[0012] Furthermore, a step groove is provided on the gear body, and the side surface of the sealing block abuts against the bottom surface of the step groove.

[0013] The beneficial effects of the utility model are:

[0014] When the gear body rotates at high speed, the lubricating oil in the oil storage cavity is blocked to ensure that the oil injection hole can lubricate the meshing part of the gear body and other transmission parts, while reducing the waste of lubricating oil and eliminating the need to use other special-shaped parts, thereby reducing production costs and improving the practicality of the gear body. The connection between the gear body and the sealing block is convenient for users to disassemble and assemble, reducing the labor intensity of users and increasing the service life of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the positive axis of the utility model;

[0017] Figure 2 This is a half-section schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0019] Figure 4 It is a half-sectioned schematic diagram of the gear body of the utility model;

[0020] Figure 5 This is an explosion diagram of the utility model;

[0021] Figure 6 It is a half-sectioned schematic diagram of the sealing block of the utility model.

[0022] In the figure: 1. gear body; 11. weight reduction groove; 12. oil drain groove; 13. oil baffle plate; 14. oil storage sponge; 15. oil injection hole; 16. oil outlet chamber; 17. oil storage chamber; 18. step groove; 2. sealing block; 21. hexagonal groove; 22. barrier groove; 3. one-way valve. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 to Figure 6 As shown, this embodiment proposes a self-lubricating gear, including a gear body 1, an oil storage cavity 17 is opened in the gear body 1, and a one-way valve 3 for replenishing the oil in the oil storage cavity 17 is fixedly connected to the side of the gear body 1 away from the sealing block 2. When the oil in the oil storage cavity 17 is insufficient or the gear body 1 and the sealing block 2 are reassembled, the oil storage cavity 17 can be replenished with lubricating oil through the one-way valve 3. Each oil outlet cavity 16 is opened in each tooth of the gear body 1, and a plurality of oil injection holes 15 are opened on the side of the oil outlet cavity 16 away from the axis of the gear body 1. The multiple oil injection holes 15 are used The oil outlet chamber 16 is connected to the outside air so that the lubricating oil in the oil chamber 16 can flow out better. Secondly, the oil pressure of the lubricating oil in the oil outlet chamber 16 when passing through the oil injection hole 15 is reduced, so that the lubricating oil will not splash outward from the oil injection hole 15, so that the lubricating oil can better adhere to and contact the outer tooth root surface of the gear body 1, thereby improving the self-lubricating effect of the gear body 1. The oil drain groove 12 is arranged on the side of the oil outlet chamber 16 facing the oil storage chamber 17. The oil drain groove 12 connects the oil outlet chamber 16 with the oil storage chamber 17, reducing the oil storage sponge 14 and the oil outlet of the oil injection hole 15. The inner wall of the oil outlet chamber 16 is fixedly connected, and the oil storage sponge 14 can absorb part of the lubricating oil in the oil outlet chamber 16. Under the centrifugal effect, the oil storage sponge 14 itself is squeezed, and the lubricating oil on the upper part of the oil storage sponge 14 can be discharged to the outside through the oil injection hole 15. At the same time, the oil storage sponge 14 has an adsorption property for the lubricating oil, which can not only absorb and replenish the lubricating oil on the side away from the oil injection hole 15, but also further slow down the speed of the lubricating oil passing through the oil injection hole 15, thereby increasing the lubrication effect of the gear body 1 and ensuring that the gear body 1 is stopped. When the rotation is stopped, the oil storage sponge 14 will not be deformed due to the centrifugal force, and the oil injection hole 15 can be completely blocked, thereby reducing the leakage of the lubricating oil in the oil outlet chamber 16, extending the lubricating oil replenishment cycle, and reducing the production cost. The sealing block 2 is detachably fixedly connected to one side of the gear body 1. The sealing block 2 cuts off the oil outlet chamber 16 and the oil storage chamber 17. Only the lubricating oil that meets the conditions can flow, so that the gear body 1 does not need to use other special-shaped parts under high-speed rotation, which can reduce the waste of lubricating oil, further reduce the production cost, and improve the practicality of the gear body 1.

[0025] like Figure 1 to Figure 4As shown, a plurality of barrier grooves 22 are provided in the sealing block 2, the number of the barrier grooves 22 is the same as the number of teeth of the gear body 1, and the ports on both sides of the barrier groove 22 are respectively connected with the oil drain groove 12 and the oil storage cavity 17. Under the centrifugal effect generated by the rotation of the gear body 1, the lubricating oil can be communicated from the barrier groove 22 toward the port of the oil storage cavity 17. The barrier groove 22 presents a "∏" shape as a whole. When the gear body 1 rotates, the lubricating oil in the oil storage cavity 17 partially flows into the barrier groove 22 through the centrifugal effect, but this part of the lubricating oil is still subjected to the centrifugal effect and is still at the port of the barrier groove 22 toward the oil storage cavity 17. Only when the gear body 1 stops, part of the lubricating oil is at the port of the barrier groove 22 toward the oil storage cavity 17. The lubricating oil at the port can completely flow into the barrier groove 22 by its own weight until the next time the gear body 1 enters. This part of the lubricating oil flows into the oil outlet chamber 16 due to the centrifugal effect. In summary, the lubricating oil in the oil outlet chamber 16 and the oil storage chamber 17 is blocked by the barrier groove 22, so that when the gear body 1 rotates at high speed, the lubricating oil in the oil outlet chamber 16 can meet the lubrication effect of the meshing point between the gear body 1 and other transmission parts. At the same time, no excessive lubricating oil will be discharged from the oil injection hole 15, reducing the waste of lubricating oil. Then, when the gear body 1 stops, the oil storage chamber 17 will replenish a small part of the oil outlet chamber 16. This working effect does not require the use of other special-shaped parts, thereby reducing production costs.

[0026] like Figure 5 As shown, two hexagonal sockets 21 are both provided on the side of the sealing block 2 away from the gear body 1 , and the gear body 1 and the sealing block 2 can be connected using an hexagonal wrench or other tools matching the hexagonal sockets 21 .

[0027] like Figure 2 and Figure 3 As shown, the oil baffle plate 13 for reducing the oil in the oil outlet chamber 16 from flowing back into the oil storage chamber 17 is fixedly connected to the inner wall of the oil outlet chamber 16, and the oil baffle plate 13 has an isosceles trapezoidal shape. The lubricating oil in the barrier groove 22 will flow into the oil drain groove 12 along the barrier groove 22 under the centrifugal effect generated by the rotation of the gear body 1, and then move upward along the inclined side of the oil baffle plate 13 until this part of the oil contacts the oil storage sponge 14 to complete the supply of the lubricating oil. When the gear body 1 stops rotating, part of the excess lubricating oil in the oil storage sponge 14 located above the oil baffle plate 13 will fall due to its own weight, and through the outer side of the oil baffle plate 13, the dripping lubricating oil will be reduced from flowing back into the barrier groove 22, so that the oil outlet chamber 16 always stores some lubricating oil, so that when the gear body 1 rotates next time, this part of the lubricating oil can play a role in gear self-lubrication.

[0028] like Figure 5As shown, a plurality of weight-reducing grooves 11 are arranged around the gear body 1 with the axis of the gear body 1 as the center. The plurality of weight-reducing grooves 11 can reduce the weight of the gear body 1 itself and reduce the production cost. At the same time, they increase the contact area between the gear body 1 and the air, so that the gear body 1 can dissipate heat better and increase the service life of the gear body 1.

[0029] like Figure 2-3 and Figure 6 As shown, the length of the blocking groove 22 is greater than the diameter of the oil drain groove 12, so that the connection between the gear body 1 and the sealing block 2 does not need to be connected at a specific angle. After the gear body 1 and the sealing block 2 are tightly connected, the end of the blocking groove 22 away from the oil storage cavity 17 always maintains a state of communication with the oil drain groove 12. The length of the blocking groove 22 refers to Figure 6 The distance between the two ends of a.

[0030] like Figure 4 and Figure 5 As shown, the step groove 18 is provided on the gear body 1, and the side surface of the sealing block 2 abuts against the bottom surface of the step groove 18. When the sealing block 2 needs to be disassembled and then installed, the step groove 18 is used to inform the user. When the step groove 18 and the sealing block 2 are completely abutted together, it indicates that the end of the barrier groove 22 away from the oil storage cavity 17 is just in communication with the oil drain groove 12, which is convenient for the user to disassemble and assemble the sealing block 2 and the gear body 1.

[0031] The working principle of this embodiment is:

[0032] After the gear body 1 is completely cleaned and dried inside and outside, and after ensuring that the gear body 1 is completely dry, the gear body 1 is connected to the sealing block 2 by using an inner hexagonal wrench or other tools that fit the inner hexagonal groove 21. When the sealing block 2 is completely fitted with the inner wall of the step groove 18, it indicates that the gear body 1 and the sealing block 2 are completely connected, and it also indicates that the oil drain groove 12 and the barrier groove 22 are in a communicating state, and then the lubricating oil is injected into the oil storage cavity 17 through the one-way valve 3;

[0033] The gear body 1 is repeatedly rotated and stopped so that the lubricating oil can flow into each oil outlet cavity 16, so that each oil outlet cavity 16 has the lubricating oil;

[0034] When the gear body 1 rotates at a high speed, the lubricating oil in the oil storage cavity 17 will be adsorbed by the inner wall away from the axis of the gear body 1 due to the centrifugal effect brought by the gear body 1, and part of the lubricating oil in the oil storage cavity 17 will enter the barrier groove 22. At the same time, due to the centrifugal effect, the lubricating oil entering the barrier groove 22 flows in the direction away from the axis of the gear body 1, so the barrier groove 22 plays the role of blocking the oil outlet cavity 16 and the oil storage cavity 17 here, and the lubricating oil stored in the oil outlet cavity 16 flows outward by the centrifugal effect, and then is adsorbed by the oil storage sponge 14, but the oil storage sponge 14 will be deformed due to the centrifugal effect, so that the lubricating oil adsorbed by the oil storage sponge 14 is squeezed out in the direction of the oil injection hole 15, so that part of the lubricating oil can flow out along the oil injection hole 15, completing the self-lubricating effect of the gear body 1;

[0035] When the gear body 1 stops rotating, the lubricating oil without centrifugal action will fall by its own weight, and a part of the lubricating oil that has slipped into the gear body 1 will be collected in the barrier groove 22 where the oil storage sponge 14 is higher than the oil baffle plate 13 and stored in the barrier groove 22. The oil storage sponge 14 is also restored without centrifugal action, and the lubricating oil in the oil outlet chamber 16 is re-absorbed to reduce the leakage of the lubricating oil from the oil injection hole 15. Then when the gear body 1 continues to rotate, the lubricating oil in the barrier groove 22 will be injected into the oil inlet and outlet chamber 16 by centrifugal action to replenish the oil outlet chamber 16.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-lubricating gear, comprising a gear body (1), characterized in that: An oil storage cavity (17) is provided in the gear body (1). A one-way valve (3) for replenishing oil in the oil storage cavity (17) is fixedly connected to the side of the gear body (1) away from the sealing block (2). An oil outlet cavity (16) is provided in each tooth on the gear body (1). A plurality of oil injection holes (15) are provided in the oil outlet cavity (16) away from the axis of the gear body (1). An oil discharge groove (12) is provided on the side of the oil outlet cavity (16) facing the oil storage cavity (17). The oil discharge groove (12) connects the oil outlet cavity (16) with the oil storage cavity (17). An oil storage sponge (14) for reducing oil discharge from the oil injection hole (15) is fixedly connected to the inner wall of the oil outlet cavity (16). A sealing block (2) is detachably fixedly connected to one side of the gear body (1).

2. A self-lubricating gear according to claim 1, characterized in that: A plurality of barrier grooves (22) are provided in the sealing block (2), the number of the barrier grooves (22) being the same as the number of teeth of the gear body (1), and ports on both sides of the barrier grooves (22) are respectively connected to the oil drain groove (12) and the oil storage cavity (17).

3. The self-lubricating gear according to claim 1, characterized in that: The sealing block (2) is provided with two hexagonal grooves (21) on a side away from the gear body (1).

4. The self-lubricating gear according to claim 1, characterized in that: An oil baffle plate (13) is fixedly connected to the inner wall of the oil outlet cavity (16) to reduce the oil in the oil outlet cavity (16) from flowing back into the oil storage cavity (17); the oil baffle plate (13) has an isosceles trapezoidal shape.

5. The self-lubricating gear according to claim 1, characterized in that: The gear body (1) is provided with a plurality of weight-reducing grooves (11) around the axis of the gear body (1).

6. The self-lubricating gear according to claim 2, characterized in that: The groove length of the blocking groove (22) is greater than the hole diameter of the oil drain groove (12).

7. The self-lubricating gear according to claim 1, characterized in that: The gear body (1) is provided with a step groove (18), and the side surface of the sealing block (2) abuts against the bottom surface of the step groove (18).

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