Two-stage speed reducer

Abstract

The utility model belongs to the technical field of speed reducers, and particularly relates to a two-stage speed reducer which comprises a lower machine body, an input shaft is arranged on the lower machine body, a first gear is arranged on the input shaft, a second gear is meshed with the first gear, a rotating rod is arranged on the second gear, a third gear is arranged on the rotating rod, and the third gear is meshed with the second gear. And an upper machine body is rotationally arranged on the lower machine body, an oil inlet hopper is arranged on the upper surface of a top plate of the upper machine body, a flow guide plate is arranged on the lower surface of the top plate of the upper machine body, and a partition plate is arranged in the oil inlet hopper. Due to the fact that the oil inlet hopper and the flow guide plate are arranged on the top plate of the speed reducer, the space of the oil inlet hopper is divided by the partition plate, a worker can conveniently add engine oil to parts inside a machine body under the condition that the shell is not opened and the speed reducer is not stopped, due to the fact that the gears are meshed with each other, the engine oil can reach each gear, and the speed reducer is convenient to use. And finally forming an anti-rust oil layer on the surface of the gear.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a two-stage reducer. Background Art

[0002] A reducer is a mechanical transmission device whose main function is to reduce the speed and increase the torque. Reducers are usually used between electric motors, internal combustion engines or other high-speed power sources and working machines or actuators to match the speed and transmit torque.

[0003] Reducers are widely used in various mechanical equipment and engineering fields, including industrial production, household appliances, medical equipment, military equipment, transportation and new energy, etc. Reducers play an important role in production machinery such as conveyors, papermaking machines, and smelting equipment. During the use of reducers, the anti-rust oil layer on the surface of the transmission gears will fall off due to long-term operation, causing the gears to rust. Therefore, it is necessary to add an anti-rust oil layer to the gears again to ensure that the service life of the gears can be extended. When adding engine oil to existing gears, the body casing needs to be removed, and then the gears need to be taken out and immersed in engine oil. In this way, the reducer must be stopped first, which slows down the work production efficiency. At the same time, it is extremely inconvenient to remove the casing. Therefore, a reducer is needed that can easily apply an anti-rust oil layer to the internal gears.

[0004] In order to solve the above problems, a two-stage reducer is proposed in this application. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a two-stage reducer, including a lower body, a ball bearing is fixedly provided on the lower body, an input shaft is rotatably provided on the ball bearing, a first gear is fixedly provided on the input shaft, a second gear is meshed on the side of the first gear, a rotating rod is fixedly provided in the middle of the second gear, a third gear is fixedly provided on the rotating rod, a fourth gear is meshed on the side of the third gear, an output shaft is fixedly provided in the middle of the fourth gear, an upper body is rotatably provided on the lower body, an oil inlet hopper is fixedly provided on the upper surface of the top plate of the upper body, a guide plate is fixedly provided on the lower surface of the top plate of the upper body, and a partition plate is fixedly provided inside the oil inlet hopper and the guide plate.

[0006] Preferably, a groove is provided on one side of the upper surface of the lower body, a protrusion is fixedly provided on one side of the lower surface of the upper body, the protrusion is movably connected in the groove, threaded holes are provided on the sides of the protrusion and the lower body, and bolts are spirally provided in the threaded holes.

[0007] Preferably, the diameter of the first gear is smaller than that of the second gear, the diameter of the second gear is larger than that of the third gear, the diameter of the third gear is smaller than that of the fourth gear, and the diameter of the fourth gear is larger than that of the second gear.

[0008] Preferably, the outer ring of the ball bearing is fixedly connected to the lower body, the outer ring of the ball bearing is movably connected to the upper body, the inner ring of the ball bearing is fixedly connected to the input shaft, and the rotating rod and the output shaft are also provided with ball bearings.

[0009] Preferably, the third gear is fixedly connected between the two second gears, and the fourth gear is rotatably connected between the two second gears.

[0010] Preferably, the oil inlet hopper is funnel-shaped, the guide plate is in an inclined state, and the bottom opening of the guide plate is located directly above the second gear and the third gear.

[0011] Preferably, the distance from the side of the partition plate to the inner wall of the oil inlet hopper which is closer is equal to the width of the second gear, and the distance between the partition plates is equal to the width of the third gear.

[0012] The above technical solution of the utility model has the following beneficial technical effects:

[0013] The utility model arranges a plurality of gears inside the reducer for mutual transmission, meshes the first gear with the second gear, meshes the third gear with the fourth gear, and then installs the second and third gears on the same rotating rod so that the two gears are on the same vertical plane, and arranges an oil inlet hopper and a guide plate whose space is separated by a partition plate just above the two gears, so that the staff can conveniently add engine oil to the gears inside the body without opening the shell and without stopping the operation of the reducer, and because the gears mesh with each other, the engine oil can reach each gear, and finally a rust-proof oil layer is formed on the gear surface, thereby improving the operation effect of the device and the efficiency of work production, and at the same time extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0017] Reference numerals:

[0018] 1. Lower body; 101. Groove; 2. Upper body; 201. Protrusion; 3. Ball bearing; 4. Input shaft; 401. First gear; 5. Rotating rod; 501. Second gear; 502. Third gear; 6. Output shaft; 601. Fourth gear; 7. Oil inlet hopper; 701. Partition plate; 8. Guide plate; 9. Bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0021] A two-stage reducer provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings. Embodiment 1

[0022] Combination Figure 1-3As shown, the utility model provides a two-stage speed reducer, including a lower body 1, a ball bearing 3 is fixedly provided on the lower body 1, an input shaft 4 is rotatably provided on the ball bearing 3, a first gear 401 is fixedly provided on the input shaft 4, a second gear 501 is meshed on the side of the first gear 401, a rotating rod 5 is fixedly provided in the middle of the second gear 501, a third gear 502 is fixedly provided on the rotating rod 5, a fourth gear 601 is meshed on the side of the third gear 502, an input gear 401 is fixedly provided in the middle of the fourth gear 601 The lower body 1 is provided with an upper body 2, an oil inlet hopper 7 is fixedly provided on the upper surface of the top plate of the upper body 2, a guide plate 8 is fixedly provided on the lower surface of the top plate of the upper body 2, a partition plate 701 is fixedly provided in the oil inlet hopper 7 and the guide plate 8, a groove 101 is provided on one side of the upper surface of the lower body 1, a protrusion 201 is fixedly provided on one side of the lower surface of the upper body 2, the protrusion 201 is movably connected in the groove 101, a threaded hole is provided on the side of the protrusion 201 and the lower body 1, a bolt is spirally provided in the threaded hole 9, the diameter of the first gear 401 is smaller than the diameter of the second gear 501, the diameter of the second gear 501 is larger than the diameter of the third gear 502, the diameter of the third gear 502 is smaller than the diameter of the fourth gear 601, the diameter of the fourth gear 601 is larger than the diameter of the second gear 501, the outer ring of the ball bearing 3 is fixedly connected to the lower body 1, the outer ring of the ball bearing 3 is movably connected to the upper body 2, the inner ring of the ball bearing 3 is fixedly connected to the input shaft 4, and the rotating rod 5 and the output shaft 6 are also provided with There is a ball bearing 3, the third gear 502 is fixedly connected between the two second gears 501, the fourth gear 601 is rotatably connected between the two second gears 501, the shape of the oil inlet hopper 7 is funnel-shaped, the guide plate 8 is in an inclined state, the bottom opening of the guide plate 8 is located directly above the second gear 501 and the third gear 502, the distance from the side of the partition plate 701 to the inner wall of the oil inlet hopper 7 that is closer is equal to the width of the second gear 501, and the distance between the partition plates 701 is equal to the width of the third gear 502.

[0023] Specifically, a ball bearing 3 is fixedly welded on the lower body 1, the outer ring of the ball bearing 3 is fixedly welded on the lower body 1, and the inner ring of the ball bearing 3 is fixedly welded on the input shaft 4, so that the input shaft 4 can rotate freely, and a first gear 401 is fixedly welded on the input shaft 4, so that when the input shaft 4 rotates, it can drive the first gear 401 to rotate, and a second gear 501 is meshed on the side of the first gear 401, and a rotating rod 5 is fixedly welded on the second gear 501, and both ends of the rotating rod 5 are fixedly connected to the inner ring of the ball bearing 3, so that the rotating rod 5 can provide support for the second gear 501 without affecting the rotation of the second gear 501, and the rotation of the second gear 501 is fixedly welded on the two gears. A third gear 502 is fixedly welded on the inner side of the second gear 501 so that the third gear 502 can rotate with the second gear 501. A fourth gear 601 is meshed on the side of the third gear 502. The fourth gear 601 is fixedly connected to the output shaft 6. Both ends of the output shaft 6 are also fixedly welded on the inner ring of the ball bearing 3 so as not to affect the rotation of the output shaft 6. The diameter of the first gear 401 is smaller than the diameter of the second gear 501, the diameter of the second gear 501 is larger than the diameter of the third gear 502, the diameter of the third gear 502 is smaller than the diameter of the fourth gear 601, and the diameter of the fourth gear 601 is larger than the diameter of the second gear 501, so that the gear After rotation, the effect of a two-stage reducer can be achieved. The upper body 2 is rotatably connected to one side of the upper surface of the lower body 1, so that the upper body 2 can be rotated and opened. A groove 101 is provided on the other side of the upper surface of the lower body 1, and a protrusion 201 is fixedly welded on one side of the lower surface of the upper body 2. The protrusion 201 is movably connected in the groove 101, and threaded holes are provided on the protrusion 201 and the groove 101. Bolts 9 are spirally inserted in the threaded holes, so that the lower body 1 and the upper body 2 can be fixed together. It is also convenient for the staff to dismantle the lower body 1 and the upper body 2, so as to facilitate the staff to replace and maintain the internal parts. A screw cap is provided on the top plate of the lower body 1. A through hole is provided, a funnel-shaped oil inlet hopper 7 is fixedly connected above the through hole, and an inclined guide plate 8 is fixedly connected below the through hole to guide the engine oil so that the engine oil can reach above the second gear 501 and the third gear 502. A partition plate 701 is fixedly welded inside the oil inlet hopper 7 and the guide plate 8 to divide the internal space of the oil inlet hopper 7 and the guide plate 8 into three parts, so that the engine oil can accurately reach the two second gears 501 and the one third gear 502, and there is no need to stop the operation of the reducer when adding engine oil, thereby improving the work production efficiency, and at the same time providing convenience for the staff to add engine oil, thereby extending the service life of the device.

[0024] The working principle and use process of the utility model are as follows: first, when in use, the upper body 2 is rotated toward the lower body 1 along the rotating shaft so that the protrusion 201 enters the groove 101, and then the bolt 9 is screwed into the threaded hole to fix the lower body 1 and the upper body 2 together, and the reducer can be used normally. When it is necessary to add oil to the internal gear, we can add oil to the oil inlet hopper 7 without stopping the operation of the reducer, and the oil will flow into the guide plate 8. Due to the separation of the partition plate 701, the oil will accurately fall onto the second gear 501 and the third gear 502. As the gears rotate, the second gear 501 will bring the oil to the first gear 401, and the third gear 502 will bring the oil to the fourth gear 601, so that each gear is added with oil, and finally an anti-rust oil layer is formed on the surface of each gear, which not only does not need to stop the operation of the reducer, but also improves the work production efficiency and prolongs the service life of the device.

[0025] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A two-stage speed reducer, comprising a lower body (1), characterized in that: A ball bearing (3) is fixedly provided on the lower body (1), an input shaft (4) is rotatably provided on the ball bearing (3), a first gear (401) is fixedly provided on the input shaft (4), a second gear (501) is meshed on the side of the first gear (401), a rotating rod (5) is fixedly provided in the middle of the second gear (501), a third gear (502) is fixedly provided on the rotating rod (5), a fourth gear (601) is meshed on the side of the third gear (502), an output shaft (6) is fixedly provided in the middle of the fourth gear (601), an upper body (2) is rotatably provided on the lower body (1), an oil inlet hopper (7) is fixedly provided on the upper surface of the top plate of the upper body (2), a guide plate (8) is fixedly provided on the lower surface of the top plate of the upper body (2), and a partition plate (701) is fixedly provided inside the oil inlet hopper (7) and the guide plate (8).

2. A two-stage reducer according to claim 1, characterized in that: A groove (101) is provided on one side of the upper surface of the lower body (1), a protrusion (201) is fixedly provided on one side of the lower surface of the upper body (2), the protrusion (201) is movably connected in the groove (101), and threaded holes are provided on the sides of the protrusion (201) and the lower body (1), and bolts (9) are screwed in the threaded holes.

3. A two-stage reducer according to claim 1, characterized in that: The diameter of the first gear (401) is smaller than the diameter of the second gear (501), the diameter of the second gear (501) is larger than the diameter of the third gear (502), the diameter of the third gear (502) is smaller than the diameter of the fourth gear (601), and the diameter of the fourth gear (601) is larger than the diameter of the second gear (501).

4. A two-stage reducer according to claim 1, characterized in that: The outer ring of the ball bearing (3) is fixedly connected to the lower body (1), the outer ring of the ball bearing (3) is movably connected to the upper body (2), the inner ring of the ball bearing (3) is fixedly connected to the input shaft (4), and the rotating rod (5) and the output shaft (6) are also provided with ball bearings (3).

5. A two-stage reducer according to claim 1, characterized in that: The third gear (502) is fixedly connected between the two second gears (501), and the fourth gear (601) is rotatably connected between the two second gears (501).

6. A two-stage reducer according to claim 1, characterized in that: The oil inlet hopper (7) is in the shape of a funnel, the guide plate (8) is in an inclined state, and the bottom opening of the guide plate (8) is located directly above the second gear (501) and the third gear (502).

7. A two-stage reducer according to claim 1, characterized in that: The distance from the side of the partition plate (701) to the inner wall of the oil inlet hopper (7) which is closer is equal to the width of the second gear (501), and the distance between the partition plates (701) is equal to the width of the third gear (502).

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