A loading gear with self-lubricating structure

Abstract

The utility model discloses a kind of loading gear change gear with self-lubricating structure, it is related to gear change gear technical field, including gear body, the center of gear body is provided with shaft hole, and the outside of gear body is evenly provided with multiple teeth, annular oil storage cavity is set up in the gear body corresponding shaft hole inner wall center position, and annular oil storage cavity is set up with the tooth root position of multiple teeth interval with capillary oil delivery channel, centrifugal force makes oil flow to annular oil storage cavity outside when operating, penetrate to tooth root through capillary oil delivery channel, diffuse to full tooth face by meshing, can effectively avoid the problem of oil pipe rupture, blockage and sealing element aging oil leakage in traditional lubrication mode. So that in the process of gear rotation, lubricating oil can be more smoothly through capillary oil delivery channel to reach tooth root part, ensure that tooth surface is continuously lubricated in the process of operation, reduce the situation of accelerated wear due to dry friction state of tooth surface when restarting after shutdown.

Description

Technical Field

[0001] This utility model relates to the field of speed change gear technology, specifically to a loading speed change gear with a self-lubricating structure. Background Technology

[0002] Existing loader gears typically employ splash lubrication or forced lubrication systems, relying on external oil pumps and oil circuits for continuous oil supply. The gear bodies are mostly solid structures or simply hollow designs, with lubricating oil being splashed from within the gearbox or forcibly delivered to the gear surfaces through external pipes. This presents several problems: first, the oil circuit system is complex, making it prone to oil pipe rupture or blockage; second, high sealing requirements exist, and prolonged high-speed operation easily leads to aging and oil leakage of the seals; third, lubrication is interrupted when the machine stops, and upon restarting, the gear surfaces are in a state of dry friction, accelerating wear. Furthermore, traditional gears lack self-maintaining lubrication capabilities, requiring frequent oil level checks and lubrication replenishment, resulting in high maintenance costs. Therefore, we propose a loader gear transmission with a self-lubricating structure. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems of lubricating oil splashing inside the gearbox or being forcibly delivered to the gear surface through external pipes, which leads to a complex oil circuit system structure, easy oil pipe rupture or blockage, and easy aging and oil leakage of seals during long-term high-speed operation; and the problem that lubrication is interrupted when the machine stops and the gear surface is in a dry friction state when restarting, which accelerates wear. This utility model provides a loading speed change gear with a self-lubricating structure.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A self-lubricating gear for loading and changing speed includes a gear body, a shaft hole at the center of the gear body, and multiple teeth evenly arranged on the outer side of the gear body. An annular oil storage cavity is opened at the center position of the inner wall of the gear body corresponding to the shaft hole, and capillary oil delivery channels are opened at the tooth root positions of the annular oil storage cavity and the multiple teeth. An adaptive sealing mechanism is inserted into the inner wall of the annular oil storage cavity near the shaft hole.

[0006] Furthermore, the outer end outlet of the capillary oil delivery channel is provided with a tooth root circular surface with tooth spacing, and a microporous filter screen is fixedly connected to the outer end outlet of the capillary oil delivery channel.

[0007] Furthermore, the capillary oil delivery channel is arranged inclined along the radial direction of the gear, and the angle between the axis of the capillary oil delivery channel and the radius of the gear is 10°-30°, with the inclination direction being the same as the rotation direction of the gear.

[0008] Furthermore, the adaptive sealing mechanism includes an annular base, which is an annular rubber sealing ring with a V-shaped groove inside, and an annular pre-compression spring is fixedly connected inside the V-shaped groove of the annular base.

[0009] Furthermore, the annular oil storage cavity is filled with a porous oil-absorbing material, and the porous oil-absorbing material is a porous polymer material.

[0010] Furthermore, the gear body has connecting holes on both sides corresponding to the end face of the annular oil storage cavity, and the connecting holes on both sides are connected to the annular oil storage cavity. An oil filling plug and a vent valve are detachably connected to the connecting holes on both sides respectively.

[0011] The beneficial effects of this utility model are as follows:

[0012] During operation, centrifugal force causes the oil to flow to the outside of the annular oil storage chamber, permeating to the tooth root through capillary oil delivery channels. It then diffuses across the entire tooth surface through meshing. The adaptive sealing mechanism effectively prevents lubricant leakage, ensuring the lubricant always flows within a predetermined path. This effectively avoids problems such as oil pipe rupture, blockage, and oil leakage due to aging seals found in traditional lubrication methods. As the gear rotates, the lubricant can more smoothly reach the tooth root through the capillary oil delivery channels, ensuring continuous lubrication of the tooth surface during operation and reducing accelerated wear caused by dry friction during restart.

[0013] The inclined arrangement of the capillary oil delivery channel in this invention allows the lubricating oil to flow more quickly and effectively to the tooth root under the centrifugal force generated by the gear rotation. Compared with vertical or reverse-arranged channels, this significantly improves the lubricating oil delivery efficiency, ensures timely lubrication of the tooth surface, further reduces tooth surface wear, and improves the working performance and service life of the gear. At the same time, the inclined angle is carefully designed to ensure smooth lubricating oil delivery without adversely affecting the structural strength of the gear.

[0014] The V-shaped groove design of this invention allows the annular base to elastically deform under pressure, tightly fitting the inner wall of the shaft hole and effectively preventing lubricating oil leakage. The annular pre-compression spring provides continuous preload, expanding the annular base within the V-shaped groove and increasing the contact pressure between the two sides of the annular base and the inner wall of the annular oil reservoir. Simultaneously, when the gear body rotates at high speed, the annular pre-compression spring maintains an expanding trend under centrifugal force, further compressing the annular base and ensuring that it always maintains tight contact with the inner wall of the shaft hole. Even under high-speed operation and temperature changes, it maintains good sealing performance. The structure is simple, easy to install and replace, providing a strong guarantee for the long-term stable operation of the gear. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a side sectional view of the present invention;

[0017] Figure 3 This is a front sectional view of the present invention;

[0018] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle.

[0019] In the figure: 1. Gear body; 2. Shaft hole; 3. Tooth; 4. Annular oil reservoir; 5. Capillary oil delivery channel; 6. Annular base; 7. Annular pre-compression spring; 8. Porous oil-absorbing material; 9. Connecting hole; 10. Oil injection plug; 11. Breathing valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] Please see Figure 1 - Figure 4 This utility model provides a loading transmission gear with a self-lubricating structure, including a gear body 1, a shaft hole 2 is provided at the center of the gear body 1, and a plurality of teeth 3 are evenly provided on the outer side of the gear body 1. An annular oil storage cavity 4 is provided at the center position of the inner wall of the gear body 1 corresponding to the shaft hole 2, and a capillary oil delivery channel 5 is provided at the tooth root position of the annular oil storage cavity 4 and the plurality of teeth 3 at intervals. An adaptive sealing mechanism is inserted into the inner wall of the annular oil storage cavity 4 near the shaft hole 2.

[0022] The gear body 1 is forged from high-strength alloy steel. The annular oil reservoir 4 is an annular closed cavity surrounding the shaft hole 2. The capillary oil delivery channel 5 has a microporous structure with a diameter of 0.1-0.3 mm. Utilizing the capillary effect, it slowly permeates the lubricating oil to the tooth root. When the gear is stationary, the lubricating oil is stored in the annular oil reservoir 4. During operation, centrifugal force causes the oil to flow to the outside of the annular oil reservoir 4, permeating to the tooth root through the capillary oil delivery channel 5, and then diffusing to the entire tooth surface through meshing. The adaptive sealing mechanism effectively prevents lubricating oil leakage, ensuring that the lubricating oil always flows within a predetermined path. This effectively avoids the problems of oil pipe rupture, blockage, and oil leakage due to aging of seals in traditional lubrication methods. This allows the lubricating oil to reach the tooth root more smoothly through the capillary oil delivery channel 5 during gear rotation, ensuring continuous lubrication of the tooth surface during operation and reducing accelerated wear caused by dry friction on the tooth surface during restart.

[0023] In this embodiment, preferably, the outer end outlet of the capillary oil delivery channel 5 is provided with a tooth root circular surface spaced by the tooth portion 3, and a microporous filter screen is fixedly connected to the outer end outlet of the capillary oil delivery channel 5; the microporous filter screen can effectively filter impurities in the lubricating oil, prevent impurities from entering the capillary oil delivery channel and causing blockage, ensure the smooth delivery of lubricating oil, further improve the reliability and stability of the self-lubricating structure, and extend the service life of the gear.

[0024] In this embodiment, preferably, the capillary oil delivery channel 5 is arranged inclined along the radial direction of the gear, and the angle between the axis of the capillary oil delivery channel 5 and the gear radius is 10°-30°, with the inclination direction being the same as the gear rotation direction. This inclined arrangement allows the lubricating oil to flow more quickly and effectively to the tooth root under the centrifugal force generated by the gear rotation. Compared to vertical or reverse-arranged channels, this significantly improves the lubricating oil delivery efficiency, ensuring timely lubrication of the tooth surface, further reducing tooth surface wear, and improving the gear's working performance and service life. Simultaneously, this inclination angle is carefully designed to ensure smooth lubricating oil delivery without adversely affecting the gear's structural strength.

[0025] In this embodiment, preferably, the adaptive sealing mechanism includes an annular base 6, which is an annular rubber sealing ring with an internal V-shaped groove. An annular pre-compression spring 7 is fixedly connected within the V-shaped groove of the annular base 6. The V-shaped groove design allows the annular base 6 to elastically deform under pressure, tightly fitting the inner wall of the shaft hole 2 and effectively preventing lubricating oil leakage. The annular pre-compression spring 7 provides continuous preload, expanding the annular base 6 within the V-shaped groove, increasing the contact pressure between the two sides of the annular base 6 and the inner wall of the annular oil reservoir 4. Simultaneously, when the gear body 1 rotates at high speed, the annular pre-compression spring 7 maintains an expanding trend under centrifugal force, further compressing the annular base 6, ensuring that the annular base 6 always maintains tight contact with the inner wall of the shaft hole 2, maintaining good sealing performance even under high-speed operation and temperature changes. The structure is simple, easy to install and replace, providing a strong guarantee for the long-term stable operation of the gear.

[0026] In this embodiment, preferably, the annular oil storage cavity 4 is filled with a porous oil-absorbing material 8, and the porous oil-absorbing material 8 is made of a porous polymer material; the porous oil-absorbing material 8 absorbs and stores lubricating oil, preventing the oil from sloshing when the gear is stationary; during operation, the centrifugal force causes the oil to be released slowly and continuously supplied to the gear surface through the capillary oil delivery channel 5.

[0027] In this embodiment, preferably, both sides of the gear body 1 are provided with connecting holes 9 corresponding to the end faces of the annular oil storage chamber 4, and the connecting holes 9 on both sides are connected to the annular oil storage chamber 4. An oil filling plug 10 and a vent valve 11 are detachably connected to each connecting hole 9 on both sides. The oil filling plug 10 has a built-in one-way valve, and the vent valve 11 is made of microporous breathable material to balance the air pressure inside the chamber. When it is necessary to add lubricating oil to the annular oil storage chamber 4, simply open the oil filling plug 10 and inject the lubricating oil using a special oil filling tool. After oil filling, reinstall the oil filling plug 10. The one-way valve prevents the lubricating oil from flowing back. The vent valve 11 can promptly discharge the gas generated in the annular oil storage chamber 4 due to oil sloshing and temperature changes during gear operation, preventing excessive air pressure inside the chamber from affecting the normal delivery of lubricating oil and the normal operation of the gear. At the same time, it can prevent external dust, moisture, and other impurities from entering the annular oil storage chamber 4, ensuring the cleanliness of the lubricating oil and the reliability of the self-lubricating structure.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A loading transmission gear with a self-lubricating structure, comprising a gear body (1), characterized in that: The gear body (1) has a shaft hole (2) at its center and multiple teeth (3) are evenly arranged on the outer side of the gear body (1). The gear body (1) has an annular oil storage cavity (4) at the center of the inner wall of the shaft hole (2) and a capillary oil delivery channel (5) is provided at the tooth root position between the annular oil storage cavity (4) and the multiple teeth (3). An adaptive sealing mechanism is inserted into the inner wall of the annular oil storage cavity (4) near the shaft hole (2).

2. A loading transmission gear with a self-lubricating structure according to claim 1, characterized in that: The outer end outlet of the capillary oil transport channel (5) is provided with a tooth root circular surface spaced by teeth (3), and a microporous filter screen is fixedly connected to the outer end outlet of the capillary oil transport channel (5).

3. A loading transmission gear with a self-lubricating structure according to claim 1, characterized in that: The capillary oil delivery channel (5) is arranged radially inclined along the gear, and the angle between the axis of the capillary oil delivery channel (5) and the gear radius is 10°-30°, with the inclination direction being the same as the gear rotation direction.

4. A loading transmission gear with a self-lubricating structure according to claim 1, characterized in that: The adaptive sealing mechanism includes an annular base (6), which is an annular rubber sealing ring with a V-shaped groove inside, and an annular pre-compression spring (7) is fixedly connected in the V-shaped groove of the annular base (6).

5. A loading transmission gear with a self-lubricating structure according to claim 4, characterized in that: The annular oil storage cavity (4) is filled with a porous oil-absorbing material (8), and the porous oil-absorbing material (8) is a porous polymer material.

6. A loading transmission gear with a self-lubricating structure according to claim 1, characterized in that: The gear body (1) has connecting holes (9) on both sides corresponding to the end face of the annular oil storage chamber (4), and the connecting holes (9) on both sides are connected to the annular oil storage chamber (4). The connecting holes (9) on both sides are respectively detachably connected to an oil plug (10) and a breather valve (11).

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