A new high-speed gear structure with radial lubricating oil holes

Abstract

This utility model discloses a novel high-speed gear structure with radial lubrication holes, relating to the field of gear technology. It includes: a gear; multiple radially stepped oil holes opened radially along the gear; and an annular groove disposed between the lubrication holes and the delivery channel to connect the two. By setting the radially stepped oil holes, precise lubrication and reduced wear are achieved: the radially stepped oil holes directly spray lubricating oil onto the gear meshing surface, ensuring the tooth surface is always under oil film protection, reducing the coefficient of friction and wear; efficient heat dissipation and reduced temperature rise: the lubricating oil quickly carries away frictional heat through the oil holes, avoiding material softening or adhesion failure caused by localized high temperatures; lightweight structure: compared to traditional splash lubrication or complex external nozzles, integrated radial oil holes reduce additional lubrication components, making the gearbox more compact; and extended service life: uniform lubrication avoids failure modes such as pitting and spalling, significantly improving gear fatigue life.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, specifically to a novel high-speed gear structure with radial lubrication holes. Background Technology

[0002] A gear is a mechanical device used to transmit power and motion. Due to its special tooth structure, it can transmit rotational motion and force to other gears or mechanical devices. Gears generate a significant amount of wear and noise during transmission. Therefore, users typically perform regular lubrication at the meshing points of the gear teeth to ensure the normal operation of the gear system and extend its service life. To reduce the workload of workers, self-lubricating gears have emerged. Self-lubricating gears are gear systems designed with self-lubrication capabilities.

[0003] For example, the publication number is CN223270550U, the publication date is August 26, 2025, and the title is "A Novel Output Gear Structure". It includes a gear hub and gear teeth. There are several gear teeth, all inserted into the gear hub. Each gear tooth consists of a tooth body and a T-shaped mounting strip. The T-shaped mounting strip is fixedly installed on the inner end of the tooth body. Two limiting structures are installed on the gear hub and on both sides of the several gear teeth. Each limiting structure consists of an annular baffle, a first connecting ring, and a second connecting ring. The first connecting ring is fixedly installed on the inner wall of the annular baffle, and the second connecting ring is fixedly installed on the inner end of the first connecting ring. By setting a gear composed of a mutually separable gear hub and gear teeth, worn or broken gear teeth can be replaced individually without replacing the entire gear hub, thus reducing resource waste and maintenance costs.

[0004] The existing technology has the following problems: 1. Difficulty in establishing an oil film. When running at low speed or intermittently, the lubricating oil cannot stably cover the tooth surface, which aggravates the wear of the gears; 2. Insufficient heat dissipation. When the gears are running at high speed, the frictional heat is difficult to dissipate quickly, which affects the lubrication performance; 3. The problem of reduced service life caused by the above two points; 4. The traditional method uses splash lubrication or complex external nozzles, which makes the gearbox not compact. Utility Model Content

[0005] The purpose of this invention is to provide a novel high-speed gear structure with radial lubrication holes to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel high-speed gear structure with radial lubrication holes, comprising:

[0007] gear;

[0008] Multiple radial stepped oil holes are provided, which are opened along the radial direction of the gear;

[0009] The radial stepped oil hole includes: a lubricating oil hole located between two teeth, and a delivery channel communicating with the lubricating oil hole;

[0010] An annular groove is installed between the lubricating oil hole and the delivery channel to connect the two.

[0011] Furthermore, it also includes an adjustment mechanism, which includes two flow plates rotatably connected in the conveying channel, the two flow plates slidingly abutting against an adjustment member, and a spring provided between the adjustment member and the inner wall of the annular groove;

[0012] The process of the spring undergoing elastic deformation drives the adjusting component to slide within the conveying channel and causes the two flow plates to rotate and open.

[0013] Furthermore, a blind slot is provided on the flow plate, and the blind slot is connected to an abutment slot. An abutment rod is fixedly connected to the adjusting component, and the abutment rod slides and abuts against the abutment slot.

[0014] Furthermore, there is a gap between the flow plate and the conveying channel for lubricating oil to flow through.

[0015] Furthermore, a threaded groove is provided inside the shaft hole of the gear.

[0016] Furthermore, the direction of the thread opening in the threaded groove is consistent with the rotation direction of the gear.

[0017] Furthermore, the spring is a compression spring.

[0018] Compared with existing technologies, the present invention provides a novel high-speed gear structure with radial lubrication holes. By setting radial stepped oil holes, it has the following advantages: 1. Precise lubrication and reduced wear: The radial stepped oil holes directly spray lubricating oil onto the gear meshing surface, ensuring that the tooth surface is always in an oil film protection state, reducing the friction coefficient and reducing wear; 2. Efficient heat dissipation and reduced temperature rise: The lubricating oil quickly carries away frictional heat through the oil holes, avoiding material softening or scuffing failure caused by local high temperature; 3. Lightweight structure: Compared with traditional splash lubrication or complex external nozzles, the integrated radial oil holes reduce additional lubrication components, making the gearbox more compact; 4. Extended service life: Uniform lubrication can avoid failure modes such as pitting and peeling, significantly improving the fatigue life of the gears. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the gear cross-sectional structure provided in an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of the adjustment mechanism structure provided in this embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the flow plate, abutment rod, and adjusting component provided in the embodiments of this utility model;

[0024] Figure 5 A schematic diagram of the flow plate structure provided in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Gear; 2. Lubricating oil hole; 3. Annular groove; 4. Conveying channel; 5. Threaded groove; 6. Adjusting mechanism; 61. Flow plate; 611. Blind groove; 612. Abutment groove; 62. Abutment rod; 63. Adjusting component; 65. Spring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Please see Figure 1-5 This utility model provides a novel high-speed gear structure with radial lubrication holes, comprising: a gear 1; multiple radial stepped oil holes, which are opened radially along the gear 1; specifically, the radial stepped oil holes include: lubrication holes 2 located between two teeth, and conveying channels 4 communicating with the lubrication holes 2; an annular groove 3, disposed between the lubrication holes 2 and the conveying channels 4, for connecting the two; it is understood that: through the annular groove 3 communicating with the lubrication holes 2, the gear 1 can convey the lubrication oil in the annular groove 3 to the lubrication holes 2 under the action of centrifugal force during rotation; more specifically, in this embodiment, the number of lubrication holes 2 and conveying channels 4 are not mutually corresponding, and a lubrication hole 2 is provided between every two teeth, so that after the lubrication oil flows out from the lubrication hole 2, it can simultaneously lubricate the two teeth. At least one conveying channel 4 needs to be provided. In this embodiment, the number of conveying channels 4 is three, and each lubrication hole 2 is connected to each conveying channel 4 by the annular groove 3.

[0028] Preferably, the system further includes an adjusting mechanism 6, which comprises two flow plates 61 rotatably connected within the conveying channel 4. A gap exists between the flow plates 61 and the conveying channel 4 for lubricating oil to flow through. That is, even when the two flow plates 61 are closed and abutting against each other, lubricating oil can still flow through this gap, ensuring the lubrication effect of the gear 1 at idle speed. An adjusting member 63, which is T-shaped, is slidably abutted against the two flow plates 61. A spring 65 is provided between the adjusting member 63 and the inner wall of the annular groove 3. Specifically, the spring 65 is a compression spring. The elastic deformation of the spring 65 drives the adjusting member 63 to slide within the conveying channel 4, and causes the two flow plates 61 to rotate and open.

[0029] Specifically, the flow plate 61 and the regulating component 63 are connected as follows: a blind groove 611 is provided on the flow plate 61, the blind groove 611 is connected to an abutment groove 612, and an abutment rod 62 is fixedly connected to the regulating component 63, the abutment rod 62 and the abutment groove 612 slide against each other.

[0030] By setting the adjustment mechanism 6, the speed of gear 1 rotation and the resulting centrifugal force cause the two flow plates 61 to rotate and open at different angles. When gear 1 is idling, the two flow plates 61 are in a closed contact state, and lubricating oil flows from the gap between the flow plates 61 and the conveying channel 4 through the annular groove 3 and is distributed to each lubricating oil hole 2. When gear 1 rotates at high speed, it causes the two flow plates 61 to rotate and open, and lubricating oil can pass through the gap between the two flow plates 61 at the same time, increasing the lubricating oil flow rate. Thus, the speed of gear 1 rotation can be adaptively controlled to adjust the lubricating oil flow rate, ensuring the lubrication effect.

[0031] Preferably, a threaded groove 5 is provided in the shaft hole of gear 1; more preferably, the threaded direction of the threaded groove 5 is consistent with the rotation direction of gear 1.

[0032] It should be noted that, due to the opening of the threaded groove 5, during the rotation of the gear 1, the external lubricating oil can be spirally pushed through the threaded groove 5 and guided into the conveying channel 4. At the same time, the centrifugal force generated by the rotation of the gear 1 causes the lubricating oil to form pressure in the threaded groove 5, which to a certain extent increases the conveying pressure.

[0033] The oil supply method in this embodiment adopts existing technology, such as oil pumps and oilers. Alternatively, an oil supply groove can be opened on the drive shaft, and the gear 1 can be coaxially fixed with the drive shaft to achieve oil supply. Referring to existing technology, it will not be elaborated further here.

[0034] Working principle: When in use, gear 1 rotates, pushing external oil from the threaded groove 5 into the conveying channel 4 and flowing into the annular groove 3. The annular groove 3 distributes the oil to each lubrication hole 2, thereby lubricating each tooth and forming a lubricating oil film on the surface of gear 1.

[0035] When gear 1 is idling, the centrifugal force of rotation is insufficient to overcome the elastic force of spring 65. At this time, the oil will flow into the annular groove 3 from the gap between the flow plate 61 and the conveying channel 4.

[0036] When gear 1 rotates at high speed, the centrifugal force of rotation overcomes the elastic force of spring 65, causing spring 65 to contract. Adjusting component 63 slides radially along gear 1 within conveying channel 4. During the sliding process of adjusting component 63, the sliding contact between abutting rod 62 and abutting groove 612 drives the two flow plates 61 to rotate and open, causing the two flow plates 61 to move away from each other. At this time, the oil can not only pass through the gap between flow plates 61 and conveying channel 4, but also pass through the gap between the two flow plates 61, increasing the oil volume.

[0037] Understandably, the size of the gap between the two flow plates 61 corresponds to the rotational speed of gear 1. The faster gear 1 rotates, the larger the gap between the two flow plates 61 becomes, and the greater the flow rate of lubricating oil, thus ensuring the lubrication effect of the high-speed rotating gear 1.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel high-speed gear structure with radial lubrication holes, characterized in that, include: Gear (1); Multiple radial stepped oil holes are provided, which are opened radially along the gear (1); The radial stepped oil hole includes: a lubricating oil hole (2) located between two teeth, and a delivery channel (4) communicating with the lubricating oil hole (2); An annular groove (3) is provided between the lubricating oil hole (2) and the conveying channel (4) to connect the two.

2. A high speed gear structure with radial oil holes according to claim 1, characterized in that, It also includes an adjustment mechanism (6), which includes two flow plates (61) that are rotatably connected in the conveying channel (4), the two flow plates (61) slide against an adjustment member (63), and a spring (65) is provided between the adjustment member (63) and the inner wall of the annular groove (3). During the process of elastic deformation of the spring (65), the adjusting member (63) is driven to slide in the conveying channel (4), and the two flow plates (61) are rotated and opened.

3. A high speed gear structure with radial oil holes according to claim 2, characterized in that, A blind groove (611) is provided on the flow plate (61), and the blind groove (611) is connected to the abutment groove (612). An abutment rod (62) is fixedly connected to the adjusting member (63), and the abutment rod (62) slides and abuts against the abutment groove (612).

4. A novel high-speed gear structure with radial lubrication holes according to claim 2, characterized in that, There is a gap between the flow plate (61) and the conveying channel (4) for lubricating oil to flow through.

5. A novel high-speed gear structure with radial lubrication holes according to claim 1, characterized in that, A threaded groove (5) is provided in the shaft hole of the gear (1).

6. A high speed gear structure with radial oil holes according to claim 5, characterized in that, The thread opening direction of the threaded groove (5) is consistent with the rotation direction of the gear (1).

7. A high speed gear structure with radial oil holes according to claim 2, characterized in that, The spring (65) is a compression spring.

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