Speed reducer shell convenient to lubricate

Abstract

A speed reducer shell convenient to lubricate comprises a base end and a buckling end installed at the upper end of the base end, an oil supply port is formed in the upper end of the buckling end, and an oil outlet is formed in one side of the base end; a baffle is installed on the inner wall of the buckling end of the upper end of the input small gear, the vertical plane where the end face of the input large gear is located passes through the baffle, the bottom end of the baffle inclines towards the side of the input large gear and is connected with a bearing plate, a plurality of oil leakage holes are vertically formed in the bearing plate in a penetrating mode, and the axes of the oil leakage holes extend to pass through the input small gear. Lubricating oil can flow out and fall onto an input pinion, the input pinion can be precisely lubricated by matching with lubricating oil shielded by a flow guide plate, and the lubricating oil is precisely guided to the edge position of a bearing through a communicated oil conveying pipe, so that parts such as a gear and the bearing can be more fully lubricated, and the service life of the gear is prolonged. The lubricating effect is improved; and the service life of a transmission part is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer housings, in particular to a reducer housing which is convenient for lubrication. Background Art

[0002] The reducer is used to match the speed and transmit torque. It is mainly used between working machines, prime movers or some actuators. It is widely used in modern machinery. The reducer is mainly composed of transmission parts (gears or worms), shafts, bearings, housings and accessories. The purpose of reducing speed and increasing torque is achieved through the coordination of transmission parts and bearings and other components.

[0003] The lubricating oil in the reducer is crucial to the operation of gears and other components. The current lubrication system is to add lubricating oil into the reducer housing and cover the large gears at the output and output ends, and lubricate other small gears and bearings and other components through gear splashing. However, during use, the centrifugal force used in splashing will throw the lubricating oil, and the control of the oil amount is unstable. In addition, under high speed or heavy load conditions, the splashing lubricating oil is easily thrown onto the inner wall of the reducer and cannot effectively cover the small gears and other parts that need lubrication, reducing the lubrication effect, causing increased wear of gears and other components, and even the reducer may malfunction due to insufficient lubrication. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a reducer housing that is easy to lubricate.

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

[0006] A reducer housing that is easy to lubricate, wherein an input large gear and an output large gear are installed inside the housing, and the two are respectively meshed with an input small gear and an output small gear, the output large gear and the input small gear are coaxial and a bearing is provided between them.

[0007] The reducer housing includes a base end and a buckle end mounted on the upper end thereof, the upper end of the buckle end is provided with an oil supply port, and one side of the base end is provided with an oil outlet;

[0008] A baffle is installed on the inner wall of the engaging end of the upper end of the input pinion, and the vertical plane where the end face of the input large gear is located passes through the baffle. The bottom end of the baffle is inclined toward the side of the input large gear and is connected to a receiving plate. The receiving plate is vertical and has multiple oil leakage holes through it, and the axes of the multiple oil leakage holes extend through the input pinion.

[0009] In order to conveniently receive the lubricating oil thrown away by the centrifugal force generated by the rotation of the input gear, the height of the receiving plate is lower than the highest point of the input gear.

[0010] In order to temporarily store the lubricating oil received by the receiving plate, a first sealing plate is installed at both ends of the receiving plate, and the first sealing plate is fixed to the baffle. A second sealing plate is installed above the end of the receiving plate away from the baffle, and a accommodating cavity is formed between the first sealing plate, the second sealing plate, the baffle and the receiving plate.

[0011] In order to facilitate the outflow of lubricating oil in the accommodating cavity and avoid the accumulation of too much lubricating oil affecting the strength of components such as the receiving plate, the highest point of the second sealing plate is lower than the highest point of the input gear and the baffle.

[0012] In order to facilitate the diversion of the lubricating oil blocked by the second sealing plate, the second sealing plate is arranged at an angle, and the upper end is inclined toward the direction close to the input gear.

[0013] In order to further shield the lubricating oil splashed by the input large gear and allow the lubricating oil to flow into the input small gear for lubrication, a guide plate is connected to the end of the bottom of the receiving plate away from the baffle, and the bottom end of the guide plate is inclined in the direction away from the input large gear;

[0014] The guide plate is vertically provided with a plurality of guide holes aligned with the oil leakage holes.

[0015] In order to allow more lubricating oil on the guide plate to flow onto the input pinion, the end of the guide plate away from the input gearwheel does not extend beyond the input pinion in the vertical direction.

[0016] In order to improve the lubrication effect of the bearing between the input pinion and the output gear, an oil pipe is connected to the bottom of the side of the first sealing plate close to the output gear, and the oil outlet end of the oil pipe extends above the side of the bearing.

[0017] In order to improve the bearing strength of the bearing plate, a plurality of reinforcing rods are installed on the upper end of the bearing plate, and the upper ends of the reinforcing rods are connected to the upper end surfaces of the buckling ends.

[0018] The beneficial effects of the present invention are as follows: the present invention is a reducer housing that is easy to lubricate. First, by arranging mutually meshing gear sets and bearings and other components in the reducer housing, the basic functions of the reducer to reduce the speed and increase the torque can be realized; secondly, the oil supply port on the snap-fit ​​end and the oil outlet port on the base end can realize the input and output of the lubricating oil inside the reducer; finally, different from the existing technology, the present scheme arranges a baffle and a receiving plate inside the snap-fit ​​end, and the baffle is used to block the lubricating oil splashed by the centrifugal force when the input large gear rotates, and the lubricating oil can be temporarily stored in conjunction with the first sealing plate and the second sealing plate, and the oil leakage hole opened at the bottom of the receiving plate can make the lubricating oil flow out and fall on the input small gear, and the lubricating oil blocked by the guide plate can accurately lubricate the input small gear, and through the connected oil pipe, the lubricating oil is accurately diverted to the edge of the bearing, so that the gears, bearings and other components can be more fully lubricated, thereby improving the lubrication effect and the service life of the transmission components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0020] In the attached figure:

[0021] Figure 1 The internal structure of the existing reducer (without the snap-on end installed);

[0022] Figure 2 This is the forward cross-sectional view of the reducer of this scheme;

[0023] Figure 3 This is a partial view of this scheme;

[0024] Figure 4 This is the side cross-sectional view of the reducer of this scheme;

[0025] The components represented by the reference numerals in the figure are:

[0026] 1. Input gear; 2. Output gear; 3. Input pinion; 4. Output pinion; 5. Bearing; 6. Base end; 7. Snap-fit ​​end; 8. Oil supply port; 9. Oil outlet; 10. Baffle; 11. Receiver plate; 12. Oil leakage hole; 13. First sealing plate; 14. Second sealing plate; 15. Guide plate; 16. Guide hole; 17. Oil pipeline; 18. Reinforcement rod. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0028] Example

[0029] As mentioned in the background technology, the existing reducer has many defects in that it uses the centrifugal force generated by the rotation of the large gear to sprinkle lubricating oil onto other components. When rotating at high speed, the sprinkling speed and height of the lubricating oil are relatively large, so that more lubricating oil is sprinkled onto the inner wall of the reducer housing, and less lubricating oil falls on the small gear and the bearing 5, resulting in poor lubrication effect. Therefore, the inventors have made improvements to the existing reducer housing and added a structure that can guide the flow of lubricating oil. The following is a detailed explanation with reference to the drawings.

[0030] This embodiment provides a reducer housing that is easy to lubricate. Figure 1-Figure 4 , an input large gear 1 and an output large gear 2 are installed inside, and the two are respectively meshed with an input small gear 3 and an output small gear 4. The output large gear 2 and the input small gear 3 are coaxial and a bearing 5 is set between them. The coaxiality here means that the coaxiality is consistent. The two are respectively connected to the output shaft and the input shaft, and are connected by a bearing 5. Moreover, the input large gear 1 and the output small gear 4 are also coaxially arranged and rotate synchronously. The scheme mainly improves the design of the reducer housing. The above is the basic layout of the internal transmission structure of the reducer, such as Figure 1 The above is the existing technology and will not be elaborated on in detail.

[0031] In this embodiment, the reducer housing includes a base end 6 and a snap-fit ​​end 7 installed on the upper end thereof. The overall structure of the base end 6 and the snap-fit ​​end 7 is consistent with the prior art. The base end 6 is a rectangular shell with an open upper end, while the snap-fit ​​end 7 is a rectangular parallelepiped with an open lower end. In order to make the structure compact, both ends are set with rounded corners. An oil supply port 8 is provided at the upper end of the snap-fit ​​end 7, and an oil outlet 9 is provided on one side of the base end 6. The oil supply port 8 and the oil outlet 9 are both set to a form that can be sealed and opened, which is convenient for the injection and discharge of lubricating oil. After the lubricating oil is injected, it needs to cover a part of the input large gear 1 and the output large gear 2. The injection height can be quantified according to the needs of the reducer.

[0032] As one of the main design points of this scheme, Figure 2 and Figure 3The upper end of the input pinion 3 is fixed with a baffle 10 on the inner wall of the snapping end 7, and the baffle 10 is inclined, with its upper end fixed to the rounded corner inside the snapping end 7, and its lower end inclined toward the side of the input large gear 1 and connected to the receiving plate 11. The receiving plate 11 is horizontal, extending in the direction close to the input large gear 1 but the end is away from the input large gear 1, and the vertical plane where the end face of the input large gear 1 (that is, the plane parallel to the tooth top circle) is located passes through the baffle 10, that is, the baffle 10 extends in the horizontal direction through the input large gear 1, so that when the input large gear 1 rotates, the centrifugal force drives the lubricating oil in the base end 6 to be thrown onto the baffle 10, and the baffle 10 is inclined, and the lubricating oil can flow to the receiving plate 11, and the height of the receiving plate 11 is lower than the highest point of the input large gear 1, avoiding being higher than the tangent of the highest point of the input large gear 1, and can receive more lubricating oil thrown by the input large gear 1.

[0033] On the basis of the above structure, the length of the receiving plate 11 along the axial direction of the input pinion 3 is not less than the thickness of the input pinion 3, and it is located above the input pinion 3 and can cover it. The receiving plate 11 is vertical and has multiple oil leakage holes 12 through it, and the axes of the multiple oil leakage holes 12 extend through the input pinion 3. The oil leakage holes 12 play a guiding role, so that the lubricating oil received by the receiving plate 11 can fall along the oil leakage holes 12 onto the input pinion 3, and accurately lubricate it.

[0034] It should be noted that a plurality of reinforcing rods 18 are installed on the upper end of the receiving plate 11, and the upper end of the reinforcing rod 18 is connected to the upper end surface of the snap-fit ​​end 7. The design position of the reinforcing rod 18 avoids the oil leakage hole 12. By designing the reinforcing rod 18, the receiving plate 11 can be connected to the snap-fit ​​end 7, sharing the gravity of the lubricating oil borne by the baffle 10, and improving the installation strength of the baffle 10 and the receiving plate 11.

[0035] In this embodiment, the lubricating oil spilled from the input large gear 1 can be temporarily stored, slowing down the speed of oil supply to the input small gear 3. First sealing plates 13 are installed at both ends of the receiving plate 11, and the first sealing plate 13 is fixed to the baffle 10, so that both sides of the receiving plate 11 can be blocked. A second sealing plate 14 is installed above the end of the receiving plate 11 away from the baffle 10, and the first sealing plate 13 and the second sealing plate 14 are connected and fixed on the side. Therefore, a receiving chamber is formed between the first sealing plate 13, the second sealing plate 14, the baffle 10 and the receiving plate 11. When the input large gear 1 rotates, the lubricating oil is spilled toward the baffle 10 by centrifugal force, and the baffle 10 blocks it and the oil flows into the receiving chamber along the baffle 10.

[0036] It should be noted that the second sealing plate 14 is arranged at an angle, and the upper end is inclined toward the direction close to the input large gear 1. The inclined second sealing plate 14 can block the lubricating oil spilled at the corresponding height position of the input large gear 1, and the inclined arrangement can have a diversion effect on the blocked lubricating oil, so that it flows more to the position of the input small gear 3. Moreover, the highest point of the second sealing plate 14 is lower than the highest point of the input large gear 1 and the baffle 10, which can prevent the second sealing plate 14 from blocking the lubricating oil spilled from the input large gear 1 over a large area, thereby ensuring the amount of lubricating oil entering the accommodating chamber.

[0037] In this embodiment, the bottom end of the receiving plate 11 away from the baffle 10 is connected to a guide plate 15, and the bottom end of the guide plate 15 is inclined in the direction away from the input large gear 1. By setting the guide plate 15, the lubricating oil spilled from the input large gear 1 at its corresponding position can be blocked, and the end of the guide plate 15 away from the input large gear 1 does not exceed the input small gear 3 in the vertical direction. The lubricating oil blocked by the guide plate 15 can slide or drip onto the input small gear 3 to a greater extent, reducing the amount of lubricating oil sliding along the guide plate 15 beyond the input small gear 3, thereby ensuring the lubrication of the input small gear 3.

[0038] Moreover, the length of the guide plate 15 is consistent with that of the receiving plate 11 , so the guide plate 15 is vertically provided with a plurality of guide holes 16 aligned with the oil leakage holes 12 , ensuring that the lubricating oil flowing down from the receiving plate 11 can flow out to the input pinion 3 through the guide holes 16 .

[0039] Based on the above structure, combined with Figure 3 and Figure 4 Since a bearing 5 is provided between the input pinion 3 and the output gear 2, it also needs to be lubricated. Therefore, this solution also designs a passage for supplying oil to the bearing 5. Among them, an oil pipe 17 is connected to the bottom of the side of the first sealing plate 13 near the output gear 2. The oil outlet end of the oil pipe 17 extends to the top of the side of the bearing 5, ensuring that the oil outlet position of the oil pipe 17 is located above the edge of the bearing 5, so that the lubricating oil flowing out can fall to the connection between the bearing 5 and the shaft to lubricate the connection between the two.

Claims

1. A reducer housing that is easy to lubricate, wherein an input gear (1) and an output gear (2) are installed inside the housing, and the two gears are respectively meshed with an input pinion (3) and an output pinion (4), the output gear (2) and the input pinion (3) are coaxial and a bearing (5) is provided between them, and the characteristics are: The reducer housing comprises a base end (6) and a buckle end (7) mounted on the upper end thereof, an oil supply port (8) is provided at the upper end of the buckle end (7), and an oil outlet (9) is provided on one side of the base end (6); A baffle (10) is installed on the inner wall of the engaging end (7) at the upper end of the input pinion (3), and the vertical plane where the end face of the input large gear (1) is located passes through the baffle (10). The bottom end of the baffle (10) is inclined toward one side of the input large gear (1) and is connected to a receiving plate (11). The receiving plate (11) is vertical and has multiple oil leakage holes (12) formed therethrough, and the axes of the multiple oil leakage holes (12) extend through the input pinion (3).

2. The speed reducer housing with convenient lubrication according to claim 1, characterized in that: The height of the receiving plate (11) is lower than the highest point of the input gear (1).

3. The speed reducer housing with convenient lubrication according to claim 1, characterized in that: A first sealing plate (13) is installed at both ends of the receiving plate (11), and the first sealing plate (13) is fixed to the baffle (10); a second sealing plate (14) is installed above one end of the receiving plate (11) away from the baffle (10); and an accommodating cavity is formed between the first sealing plate (13), the second sealing plate (14), the baffle (10) and the receiving plate (11).

4. The speed reducer housing with convenient lubrication according to claim 3, characterized in that: The highest point of the second sealing plate (14) is lower than the highest points of the input gear (1) and the baffle (10).

5. The speed reducer housing with convenient lubrication according to claim 4, characterized in that: The second sealing plate (14) is arranged obliquely, and the upper end is inclined toward a direction close to the input gear (1).

6. The speed reducer housing with convenient lubrication according to claim 5, characterized in that: The bottom end of the receiving plate (11) away from the baffle (10) is connected to a guide plate (15), and the bottom end of the guide plate (15) is inclined in a direction away from the input gear (1); The guide plate (15) is vertically provided with a plurality of guide holes (16) aligned with the oil leakage holes (12).

7. The speed reducer housing with convenient lubrication according to claim 6, characterized in that: An end of the guide plate (15) away from the input large gear (1) does not extend beyond the input small gear (3) in the vertical direction.

8. The speed reducer housing with convenient lubrication according to claim 3, characterized in that: An oil delivery pipe (17) is connected to the bottom of the side of the first sealing plate (13) close to the output gear (2), and the oil outlet end of the oil delivery pipe (17) extends to the upper side of the bearing (5).

9. The speed reducer housing with convenient lubrication according to claim 1, characterized in that: A plurality of reinforcing rods (18) are installed on the upper end of the receiving plate (11), and the upper ends of the reinforcing rods (18) are connected to the upper end surface of the buckling end (7).

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