Large-torque planetary reducer

Abstract

The utility model provides a large-torque planetary reducer, which relates to the technical field of planetary reducers, and comprises a reducer body and a lubricating channel arranged in the reducer body, a sealing plate is arranged at each lubricating oil head in the lubricating channel, and the sliding direction and the initial position of the sealing plate are limited by two arc-shaped guide rails and a spring. In actual use, acting force larger than spring tension is generated on the sealing plate, so that the sealing plate slides towards the lubricating oil head, the sealing plate is used for sealing a pipe opening, located in the lubricating channel, of the lubricating oil head, the flow of lubricating oil entering the lubricating oil head can be controlled, and the lubricating oil head is completely sealed along with continuous movement of the sealing plate; lubricating oil can be controlled to flow out from which lubricating oil head, and the lubricating oil can be reasonably distributed according to the size of parts in a speed reducer body and loads.

Description

Technical Field

[0001] This utility model relates to the field of planetary reducer technology, and in particular to a high-torque planetary reducer. Background Technology

[0002] Planetary gear reducers are high-precision transmission devices widely used in industrial fields, offering numerous advantages and versatility. The core components of a planetary gear reducer include a sun gear, planet gears, an internal gear ring, and a planet carrier. The power input shaft drives the sun gear, which in turn rotates the planet gears. The planet gears roll within the internal gear ring and revolve around the sun gear. The motion is transmitted to the output shaft via the planet carrier, achieving speed reduction. During operation, proper lubrication of the internal gear components is crucial.

[0003] Therefore, a gear reducer with easy lubrication, disclosed in CN216158262U, allows for easy removal of the sealing cap by applying a certain rotational force to the grease fitting head for lubrication or tightening. Lubricating oil flows through the grease fitting head into the lubrication channel and is distributed to various lubrication points on the gearbox. This design is simple in structure, convenient and quick to operate, and effectively lubricates the inside of the gear reducer, reducing wear during operation and facilitating use. However, because the lubrication channel is connected to several grease fitting heads, and the lubrication channel is also connected to the grease fitting head, in actual use, after the lubricating oil enters the lubrication channel through the grease fitting head, it is impossible to control which grease fitting head the oil flows out from. This can easily lead to the lubricating oil not being properly distributed according to the size of the gearbox. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a high-torque planetary reducer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-torque planetary reducer, comprising a reducer body and a lubrication channel disposed within the reducer body. The lubrication channel is connected to an oil injection pipe outside the reducer body and a plurality of lubricating oil heads inside the reducer body. Two arc-shaped guide rails are symmetrically fixedly connected to the inner wall of the lubrication channel on one side of the plurality of lubricating oil heads. The length direction of the arc-shaped guide rails is arranged along the distribution direction of the plurality of lubricating oil heads, and a plurality of sealing plates corresponding to the positions and quantities of the lubricating oil heads are disposed between the two arc-shaped guide rails. The two sides of the sealing plates are respectively engaged with the two arc-shaped guide rails, and a spring is connected between the sealing plates and one of the arc-shaped guide rails. The wall of the oil injection pipe is connected to a control box located outside the reducer body, and the control box is used to control the movement of the plurality of sealing plates.

[0006] Preferably, guide strips are fixedly connected to the bottom end of the oil injection pipe and the connection between the control box and the oil injection pipe. A protrusion is fixedly connected to the lubrication channel on the side of the lubrication head away from the sealing plate. A traction line corresponding to the number of sealing plates is provided between the two guide strips. One traction line corresponds to one sealing plate, and one end of the traction line passes through the inner wall of the lubrication channel and the protrusion at the lubrication head and is fixed to the side of the sealing plate.

[0007] Preferably, the other ends of the plurality of traction lines extend into the control box, and a partition is fixedly connected to the control box near the box opening. The other ends of the plurality of traction lines are equidistantly distributed and all pass through the partition.

[0008] Preferably, a sealing plug sleeved on several traction lines is fixedly connected to the other end of the connection between the control box and the oil injection pipe.

[0009] Preferably, the partition is rotatably connected to a reel on the side facing the control box opening and near each traction line penetration point, and the other end of the traction line is wound around the reel at the adjacent position.

[0010] Preferably, a ratchet is fixedly connected to the surface of the winding reel, and a spring rod is rotatably connected to the side of the partition near the ratchet via a snap ring. The telescopic end of the spring rod is fixedly connected to a pawl that meshes with the teeth of the ratchet.

[0011] Preferably, one side of the partition extends outward and fits against the side of the pawl.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, a sealing plate is set at each lubrication head in the lubrication channel. Two arc-shaped guide rails and springs are used to limit the sliding direction and initial position of the sealing plate. In actual use, by generating a force greater than the spring tension on the sealing plate, the sealing plate slides towards the lubrication head. The sealing plate seals the opening of the lubrication head in the lubrication channel, thereby controlling the flow rate of lubricating oil entering the lubrication head. As the sealing plate continues to move and completely seals the lubrication head, it is possible to control which lubrication head the lubrication oil flows out from. Furthermore, the lubrication oil can be reasonably distributed according to the size of the internal components of the reducer and the load.

[0014] 2. In this utility model, by setting a ratchet and a pawl, the ratchet and pawl can be used to ensure that the winding reel can only rotate in one direction. That is, the winding reel rotates to wind up the traction line, and then the traction line pulls the sealing plate to overcome the tension of the spring and move. Conversely, by setting a spring rod connected to the pawl, the elastic extension of the spring rod can disengage the pawl from the ratchet, so that the winding reel can pull the sealing plate to reset under the elastic contraction and reset action of the spring, and then pull the traction line, so as to realize the reel reversing to release the traction line. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural schematic diagram of a high-torque planetary reducer proposed in this utility model;

[0016] Figure 2 is a schematic diagram of the oil injection pipe of a high-torque planetary reducer proposed in this utility model;

[0017] Figure 3 shows a high-torque planetary reducer proposed in this utility model. Figure 2 A schematic diagram of the cross-sectional structure;

[0018] Figure 4 is a cross-sectional view of the high-torque planetary reducer proposed in this utility model as shown in Figure 3.

[0019] Figure 5 is Figure 4 Enlarged view of point A in the middle.

[0020] Legend: 1. Gearbox body; 2. Oil injection pipe; 3. Control box; 4. Lubrication channel; 5. Traction line; 6. Spring; 7. Sealing plate; 8. Protrusion; 9. Guide bar; 10. Lubricating oil head; 11. Arc-shaped guide rail; 12. Cable reel; 13. Ratchet; 14. Pad; 15. Spring rod; 16. Sealing plug; 17. Partition. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figures 1-5As shown, a high-torque planetary reducer includes a reducer body 1 and a lubrication channel 4 disposed within the reducer body 1. The lubrication channel 4 is connected to an oil injection pipe 2 outside the reducer body 1 and several lubrication heads 10 inside the reducer body 1. Lubricating oil enters the lubrication channel 4 through the oil injection pipe 2 and flows out through the several lubrication heads 10 into the reducer body 1. In actual use, a pipe can be fitted onto the port of each lubrication head 10 and extended to the corresponding gear, so that the lubricating oil in the lubrication channel 4 drips to the corresponding gear through the lubrication head 10 and the corresponding pipe. Two arc-shaped guide rails 11 are symmetrically fixedly connected to one side of the several lubrication heads 10 on the inner wall of the lubrication channel 4. The length direction of the arc-shaped guide rails 11 is arranged along the distribution direction of the several lubrication heads 10, and several lubrication points are arranged between the two arc-shaped guide rails 11. The sealing plates 7 are positioned and numbered one-to-one with the oil heads 10. The two sides of the sealing plates 7 are respectively engaged with two arc-shaped guide rails 11, and a spring 6 connects the sealing plates 7 and one of the arc-shaped guide rails 11. The wall of the oil injection pipe 2 is connected to a control box 3 located outside the reducer body 1. The control box 3 is used to control the movement of several sealing plates 7. The two arc-shaped guide rails 11 ensure that the sealing plates 7 can only slide against one side of the lubricating oil head 10 in the lubrication channel 4. In the initial state, the sealing plates 7 are kept in a state of non-interference with the corresponding lubricating oil head 10 under the tension of the spring 6. In actual use, by using the guiding effect of the two arc-shaped guide rails 11, the sealing plates 7 are moved by applying tension to overcome the tension of the spring 6. The sealing plates 7 can be used to seal the corresponding lubricating oil head 10, that is, control the flow rate of lubricating oil entering the lubricating oil head 10, and thus control the output of lubricating oil head 10, which is convenient for distributing lubricating oil.

[0024] Specifically: Guide strips 9 are fixedly connected to the bottom of the oil injection pipe 2 and at the connection point between the control box 3 and the oil injection pipe 2. A protrusion 8 is fixedly connected to the lubrication channel 4 on the side of the lubrication head 10 away from the sealing plate 7. A traction line 5, corresponding to the number of sealing plates 7, runs through the two guide strips 9. Each traction line 5 corresponds to one sealing plate 7, and one end of the traction line 5 passes through the inner wall of the lubrication channel 4 and the protrusion 8 at the lubrication head 10, and is fixed to the side of the sealing plate 7. The other ends of the traction lines 5 extend into the control box 3, and are fixed inside the control box 3 near the opening. A partition 17 is connected to a plurality of traction lines 5, the other ends of which are equidistantly distributed and all pass through the partition 17. Through the provided protrusions 8, when one of the traction lines 5 on the partition 17 is pulled, the sealing plate 7 connected to the traction line 5 moves against the tension of the spring 6 under the traction action of the traction line 5 and the distribution action of the two guide bars 9. The provided protrusions 8 can ensure that when the traction line 5 near the sealing plate 7 is passively pulled, it generates a force on the sealing plate 7 in the direction parallel to the inner wall of the lubrication channel 4, that is, it ensures the smooth movement of the sealing plate 7.

[0025] Specifically: A sealing plug 16, fitted onto several traction lines 5, is fixedly connected to the other end of the connection between the control box 3 and the oil injection pipe 2. A winding reel 12 is rotatably connected to the side of the partition 17 facing the opening of the control box 3 and near the penetration point of each traction line 5. The other end of the traction line 5 is wound around the adjacent winding reel 12. A ratchet 13 is fixedly connected to the surface of the winding reel 12. A spring rod 15 is rotatably connected to the side of the partition 17 near the ratchet 13 via a retaining spring. A pawl 14, meshing with the teeth of the ratchet 13, is fixedly connected to the telescopic end of the spring rod 15. One side of the partition 17 extends outward and fits against the side of the pawl 14. Because the spring rod 15 is connected to the partition 17 via a retaining spring, rotating the winding reel 12 allows the connected traction line 5 to wind and rewind, thereby generating tension on the traction line 5 and causing the corresponding sealing plate 7 to move. The ratchet 13 can... As the reel 12 rotates, the ratchet 13 rotates relative to the pawl 14 when the reel 12 winds up the traction line 5. With the support of the spring rod 15, the pawl 14 can swing elastically with the rotation of the ratchet 13. Conversely, by using the pawl 14 to abut against the teeth on the surface of the ratchet 13, the ratchet 13 can be prevented from reversing, that is, the reel 12 can be prevented from reversing to release the traction line 5. When it is necessary to release the traction line 5, the elastic extension and retraction of the spring rod 15 is used to manually pull the pawl 14, so that the pawl 14 overcomes the tension of the spring rod 15 and moves to be misaligned with the ratchet 13. Under the elastic contraction of the spring 6, the sealing plate 7 is pulled back to its original position, thereby pulling the traction line 5, so that the traction line 5 drives the reel 12 to rotate, thereby releasing the traction line 5. In addition, the sealing plug 16 set in this solution can prevent the lubricating oil in the oil injection pipe 2 from entering the control box 3.

[0026] Working principle: Open the control box 3 cover, and adjust the opening degree of the connected lubricating oil head 10 toward the lubrication channel 4 according to the load of different parts of the reducer body 1 during operation. Specifically, rotate the winding reel 12 on the partition 17 to wind the traction line 5. The tension of the traction line 5 causes the corresponding sealing plate 7 to overcome the tension of the spring 6 and slide along the surface of the two arc-shaped guide rails 11. The sealing plate 7 can then cover the opening of the lubricating oil head 10 in the lubrication channel 4, thereby adjusting the opening degree of the lubricating oil head 10. Then, open the cover of the oil injection pipe 2 and pour the lubricating oil into the lubrication channel 4 along the oil injection pipe 2, and let it drip down to the corresponding position along the lubricating oil head 10 with different opening degrees.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A large torque planetary reducer, comprising a reducer body (1) and a lubricating channel (4) arranged in the reducer body (1), the lubricating channel (4) being in communication with an oil injection pipe (2) outside the reducer body (1) and a plurality of lubricating oil heads (10) in the reducer body (1), characterized in that: The inner wall of the lubricating channel (4) is symmetrically fixedly connected with two arc-shaped guide rails (11) on one side of the plurality of lubricating oil heads (10), the length direction of the arc-shaped guide rails (11) is arranged along the distribution direction of the plurality of lubricating oil heads (10), and the arc-shaped guide rails (11) are provided with a plurality of sealing plates (7) corresponding in position and number to the plurality of lubricating oil heads (10) arranged between the two arc-shaped guide rails (11), the two side edges of the sealing plate (7) are clamped on the two arc-shaped guide rails (11) respectively, and the sealing plate (7) is connected with one of the arc-shaped guide rails (11) through a spring (6), and the oil injection pipe (2) is communicated with the control box (3) outside the speed reducer body (1), and the control box (3) is used for controlling the movement of the plurality of sealing plates (7).

2. The large torque planetary speed reducer of claim 1, wherein: The inner bottom end of the oil injection pipe (2) and the communication part of the control box (3) and the oil injection pipe (2) are fixedly connected with guide strips (9), the lubricating channel (4) is fixedly connected with protrusions (8) on the side away from the sealing plate (7) of the lubricating oil head (10), a plurality of traction lines (5) corresponding in number to the plurality of sealing plates (7) are arranged through the two guide strips (9), one of the traction lines (5) corresponds to one of the sealing plates (7), and one end of the traction line (5) penetrates the protrusions (8) at the inner wall of the lubricating channel (4) and the lubricating oil head (10) and is fixed with the side edge of the sealing plate (7).

3. The large torque planetary speed reducer of claim 2, wherein: The other ends of the plurality of traction lines (5) extend into the control box (3), the control box (3) is fixedly connected with a partition plate (17) near the box opening, the other ends of the plurality of traction lines (5) are equidistantly distributed and are arranged through the partition plate (17).

4. The large torque planetary speed reducer of claim 2, wherein: The other end of the communication part of the control box (3) and the oil injection pipe (2) is fixedly connected with a sealing plug (16) sleeved on the plurality of traction lines (5).

5. The large torque planetary speed reducer of claim 3, wherein: The partition plate (17) is rotatably connected with a winding reel (12) at a position near the penetration of each traction line (5) on the side of the box opening of the control box (3), and the other end of the traction line (5) is wound on the winding reel (12) at the adjacent position.

6. The large torque planetary speed reducer of claim 5, wherein: The surface of the winding reel (12) is fixedly connected with a ratchet wheel (13), the side of the partition plate (17) near the ratchet wheel (13) is rotatably connected with a spring rod (15) through a snap spring, and the telescopic end of the spring rod (15) is fixedly connected with a pawl (14) meshing with the tooth surface of the ratchet wheel (13).

7. The large torque planetary speed reducer of claim 6, wherein: The partition plate (17) extends outward on one side and is attached to the side edge of the pawl (14).

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