Reversing connection structure and speed reducer reverser

Abstract

The utility model relates to the technical field of speed reducers, in particular to a reversing connecting structure and a speed reducer reverser, which comprises a transmission shaft, a driven shaft and a bearing positioning piece, a first connecting hole penetrates through the middle of the bearing positioning piece, and a first tapered roller bearing is arranged on the inner wall of the first connecting hole. The transmission shaft penetrates through the first tapered roller bearing, a first bevel gear is arranged at the end, close to the driven shaft, of the transmission shaft, the driven shaft is sleeved with a second bevel gear, the first bevel gear is meshed with the second bevel gear, threads are arranged on the outer wall of the transmission shaft, and the outer wall of the driven shaft is sleeved with a nut which is connected with the threads. The nut abuts against the inner ring of the first tapered roller bearing. According to the utility model, the position of the inner ring of the first tapered roller bearing relative to the outer ring can be changed by rotating the nut, so that the tightness between the inner ring and the outer ring of the first tapered roller bearing is adjusted, and the first bevel gear is not easy to interfere with the first tapered roller bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a reversing connection structure and a reducer commutator. Background Art

[0002] The utility model relates to a commutator structure used in a reducer, and in particular to an installation and adjustment mechanism of a tapered roller bearing inside the commutator. In the use of the reducer, the commutator is one of the important components in order to achieve force transmission and direction change. Usually, a tapered roller bearing is arranged at one end of the transmission shaft close to the bevel gear to provide necessary radial and axial support.

[0003] In the common commutator designs on the market, the tapered roller bearings are usually fixed in position by bevel gears and bumps in the housing. However, this fixed assembly method lacks room for adjustment and is prone to three problems: first, the inner and outer rings of the tapered roller bearings may be too tight due to manufacturing tolerances, thus affecting the smooth operation of the transmission shaft; second, the bearing support may be insufficient due to too loose a fit, affecting the overall stability and life of the mechanical system; third, since the bevel gear is assembled on the transmission shaft and meshes with the bevel gear on the driven shaft for a long time, the bevel gear is prone to deviate to one side on the transmission shaft, which in turn causes the inner ring of the tapered roller bearing to deviate to one side of the outer ring, which is prone to locking. Utility Model Content

[0004] The utility model aims to at least solve the technical problems existing in the prior art. To this end, the utility model proposes a reversing connection structure and a reducer commutator, which can adjust the inner ring of the first tapered roller bearing through a nut at one end close to the driven shaft to adjust the tightness of the first tapered roller bearing, and will not ensure the stability of the overall structure.

[0005] According to some embodiments of the first aspect of the utility model, a reversing connection structure includes a transmission shaft, a driven shaft and a bearing positioning member, a first connecting hole passes through the middle of the bearing positioning member, a first tapered roller bearing is arranged on the inner wall of the first connecting hole, the transmission shaft is passed through the first tapered roller bearing, a first bevel gear is arranged at one end of the transmission shaft close to the driven shaft, a second bevel gear is sleeved on the driven shaft, the first bevel gear is meshed with the second bevel gear, a thread is arranged on the outer wall of the transmission shaft, a nut is sleeved on the outer wall of the driven shaft, the nut is connected to the thread, and the nut abuts against the inner ring of the first tapered roller bearing.

[0006] According to some embodiments of the first aspect of the present invention, a reversing connection structure has at least the following beneficial effects:

[0007] The utility model arranges a first tapered roller bearing on the inner wall of a first connecting hole, a transmission shaft is passed through the first tapered roller bearing, a first bevel gear is arranged at one end of the transmission shaft close to the driven shaft, a second bevel gear is sleeved on the driven shaft, the first bevel gear is meshed with the second bevel gear, the meshing of the transmission shaft and the driven shaft is realized, a thread is arranged on the outer wall of the transmission shaft, a nut is sleeved on the outer wall of the driven shaft, the nut is connected with the thread, the nut abuts against the inner ring of the first tapered roller bearing, rotating the nut can change the position of the inner ring of the first tapered roller bearing relative to the outer ring, thereby adjusting the tightness between the inner ring and the outer ring of the first tapered roller bearing, and the first bevel gear is not easy to interfere with the first tapered roller bearing.

[0008] According to the reversing connection structure of some embodiments of the first aspect of the utility model, a stopper is protruding from the inner wall of the first connecting hole, the first tapered roller bearing is arranged between the stopper and the nut, and the end with a larger inner ring diameter of the first tapered roller bearing abuts against the nut.

[0009] According to the reversing connection structure of some embodiments of the first aspect of the utility model, a connecting protrusion is convexly provided at the center of the end of the transmission shaft, the first bevel tooth is sleeved on one end of the connecting protrusion, a groove is provided on the connecting protrusion, a retaining spring is provided in the groove, and the first bevel tooth is arranged between the retaining spring and the transmission shaft.

[0010] According to the reversing connection structure of some embodiments of the first aspect of the utility model, a second tapered roller bearing is provided at the other end of the connecting protrusion, a positioning block is protrudingly provided on the outer wall of the transmission shaft, and the second tapered roller bearing is arranged between the connecting protrusion and the positioning block.

[0011] According to the reversing connection structure of some embodiments of the first aspect of the utility model, an oil seal is provided at one end of the first connection hole away from the driven shaft.

[0012] According to some embodiments of the second aspect of the utility model, a reducer commutator comprises a shell with the commutation connection structure described in some embodiments of the first aspect, the top of the shell is provided with an opening, the bearing positioning piece is arranged at the top of the opening, the first connecting hole is connected with the opening, and the driven shaft can be rotatably passed through both sides of the shell.

[0013] According to some embodiments of the second aspect of the present utility model, a reducer commutator has at least the following beneficial effects:

[0014] The utility model has good structural stability, and the overall stability and service life of the mechanical system inside the shell can be better guaranteed.

[0015] According to a reducer commutator of some embodiments of the second aspect of the utility model, a first positioning hole passes through the outer periphery of the bearing positioning member, a second positioning hole is arranged on the shell, and the first positioning hole and the second positioning hole are connected by a fastener.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the first aspect of the utility model.

[0019] Figure 2 It is a cross-sectional view of an embodiment of the first aspect of the utility model.

[0020] Figure 3 It is a schematic structural diagram of an embodiment of the second aspect of the utility model.

[0021] Figure 4 It is a cross-sectional view of an embodiment of the second aspect of the utility model.

[0022] Figure numerals: 1. transmission shaft, 2. driven shaft, 3. bearing positioning member, 4. first connecting hole, 5. first tapered roller bearing, 6. first bevel gear, 7. second bevel gear, 8. thread, 9. nut, 10. stopper, 11. connecting protrusion, 12. retaining ring, 13. second tapered roller bearing, 14. positioning block, 15. oil seal, 16. housing, 17. opening, 18. first positioning hole, 19. second positioning hole, 20. fastener. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] like Figure 1-Figure 2 As shown, the first embodiment of the utility model provides a reversing connection structure.

[0028] A reversing connection structure comprises a transmission shaft 1, a driven shaft 2 and a bearing locator 3, a first connecting hole 4 is penetrated in the middle of the bearing locator 3, a first tapered roller bearing 5 is arranged on the inner wall of the first connecting hole 4, the transmission shaft 1 is penetrated by the first tapered roller bearing 5, a first bevel gear 6 is arranged at one end of the transmission shaft 1 close to the driven shaft 2, a second bevel gear 7 is sleeved on the driven shaft 2, the first bevel gear 6 is meshed with the second bevel gear 7, a thread 8 is arranged on the outer wall of the transmission shaft 1, a nut 9 is sleeved on the outer wall of the driven shaft 2, the nut 9 is connected to the thread 8, and the nut 9 abuts against the inner ring of the first tapered roller bearing 5.

[0029] The utility model is provided with a first tapered roller bearing 5 on the inner wall of a first connecting hole 4, a transmission shaft 1 is passed through the first tapered roller bearing 5, a first bevel gear 6 is provided at one end of the transmission shaft 1 close to the driven shaft 2, a second bevel gear 7 is sleeved on the driven shaft 2, the first bevel gear 6 meshes with the second bevel gear 7, the meshing of the transmission shaft 1 and the driven shaft 2 is realized, a thread 8 is provided on the outer wall of the transmission shaft 1, a nut 9 is sleeved on the outer wall of the driven shaft 2, the nut 9 is connected with the thread 8, the nut 9 abuts against the inner ring of the first tapered roller bearing 5, rotating the nut 9 can change the position of the inner ring of the first tapered roller bearing 5 relative to the outer ring, thereby adjusting the tightness between the inner ring and the outer ring of the first tapered roller bearing 5, and the first bevel gear 6 is not easy to interfere with the first tapered roller bearing 5.

[0030] In the reversing connection structure described in this embodiment, a stopper 10 is convexly provided on the inner wall of the first connection hole 4, the first tapered roller bearing 5 is arranged between the stopper 10 and the nut 9, and the end of the first tapered roller bearing 5 with a larger inner ring diameter abuts against the nut 9. Specifically, the above-mentioned structure has good stability.

[0031] It can be understood that, in some embodiments, a positioning groove can be provided on the inner wall of the first connecting hole 4, and a retaining spring can be provided in the positioning groove to achieve positioning.

[0032] In the reversing connection structure described in this embodiment, a connection protrusion 11 is convexly provided at the center of the end of the transmission shaft 1, the first bevel gear 6 is sleeved on one end of the connection protrusion 11, a clamping groove is provided on the connection protrusion 11, a clamping spring 12 is provided in the clamping groove, and the first bevel gear 6 is provided between the clamping spring 12 and the transmission shaft 1. Specifically, the above arrangement realizes the positioning of the first bevel gear 6, and the first bevel gear 6 can be removed for replacement and maintenance.

[0033] In the reversing connection structure described in this embodiment, the other end of the connecting protrusion 11 is provided with a second tapered roller bearing 13, the outer wall of the transmission shaft 1 is provided with a positioning block 14, and the second tapered roller bearing 13 is arranged between the connecting protrusion 11 and the positioning block 14. Specifically, the above arrangement further improves the rotation stability of the transmission shaft 1.

[0034] In the reversing connection structure described in this embodiment, an oil seal 15 is provided at one end of the first connection hole 4 away from the driven shaft 2. Specifically, the above arrangement can improve the sealing performance.

[0035] like Figure 3-Figure 4 As shown, the second embodiment of the utility model provides a reversing connection structure.

[0036] A reducer commutator comprises a shell 16 and the commutation connection structure described in the first aspect embodiment, the shell 16 is provided with an opening 17 at the top, the bearing positioning member 3 is arranged at the top of the opening 17, the first connecting hole 4 is connected to the opening 17, and the driven shaft 2 can be rotatably passed through both sides of the shell 16.

[0037] The utility model has good structural stability, and the overall stability and life of the mechanical system inside the housing 16 can be better guaranteed.

[0038] In the reducer commutator described in this embodiment, the outer periphery of the bearing locating member 3 is penetrated with a first locating hole 18, the housing 16 is provided with a second locating hole 19, and the first locating hole 18 and the second locating hole 19 are connected by a fastener 20. Specifically, the above-mentioned arrangement of the bearing locating member 3 facilitates disassembly and assembly.

[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reversing connection structure, characterized in that: It includes a transmission shaft, a driven shaft and a bearing locator, a first connecting hole passes through the middle of the bearing locator, a first tapered roller bearing is arranged on the inner wall of the first connecting hole, the transmission shaft is passed through the first tapered roller bearing, a first bevel gear is arranged at one end of the transmission shaft close to the driven shaft, a second bevel gear is sleeved on the driven shaft, the first bevel gear is meshed with the second bevel gear, a thread is arranged on the outer wall of the transmission shaft, a nut is sleeved on the outer wall of the driven shaft, the nut is connected to the thread, and the nut abuts against the inner ring of the first tapered roller bearing.

2. A reversing connection structure according to claim 1, characterized in that: A stopper is protruding from the inner wall of the first connecting hole, the first tapered roller bearing is arranged between the stopper and the nut, and the end of the first tapered roller bearing with a larger inner ring diameter abuts against the nut.

3. A reversing connection structure according to claim 1, characterized in that: A connecting protrusion is convexly provided at the center of the end of the transmission shaft, the first bevel gear is sleeved on one end of the connecting protrusion, a groove is formed on the connecting protrusion, a retaining spring is provided in the groove, and the first bevel gear is arranged between the retaining spring and the transmission shaft.

4. A reversing connection structure according to claim 3, characterized in that: A second tapered roller bearing is arranged at the other end of the connecting protrusion, a positioning block is convexly arranged on the outer wall of the transmission shaft, and the second tapered roller bearing is arranged between the connecting protrusion and the positioning block.

5. A reversing connection structure according to claim 1, characterized in that: An oil seal is disposed at one end of the first connecting hole away from the driven shaft.

6. A reducer commutator, characterized in that: It comprises a shell and the reversing connection structure according to any one of claims 1 to 4, wherein an opening is arranged at the top of the shell, the bearing positioning member is arranged at the top of the opening, the first connecting hole is connected to the opening, and the driven shaft is rotatably arranged on both sides of the shell.

7. A reducer commutator according to claim 6, characterized in that: A first positioning hole is formed through the outer periphery of the bearing positioning member, a second positioning hole is provided on the housing, and the first positioning hole and the second positioning hole are connected by a fastener.

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