Double-speed reducer

Abstract

The utility model discloses a double-speed reducer which comprises a first-stage speed reduction module and a second-stage speed reduction module, the first-stage speed reduction module and the second-stage speed reduction module are connected together in a detachable mode, the second-stage speed reduction module and the first-stage speed reduction module are connected in series, the first-stage speed reduction module can output a first rotating speed, and the second-stage speed reduction module can output a second rotating speed. And meanwhile, the second-stage speed reduction module can output a second rotating speed, and the second rotating speed is smaller than the first rotating speed. The double-speed reducer can provide two different rotating speeds at the same time, the first rotating speed mode is suitable for high-speed operation, and the second rotating speed mode is suitable for low-speed operation; due to the fact that the first-stage speed reduction module and the second-stage speed reduction module are designed in a modularized mode, a user can select combinations of different speed modes according to actual requirements, and applicability and flexibility of equipment are improved. And meanwhile, the double-speed reducer has higher maintainability and upgradability.

Description

Technical Field

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

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The reducers in the prior art can usually only switch from one output speed to another, and cannot output two different speeds at the same time, which cannot meet the occasions where two different speeds need to be operated at the same time. At the same time, the reducers in the prior art usually use multiple pairs of gear sets to achieve different speed switching, and the gear sets are placed in a gear box that is cast as a whole. When the reducer fails, it may need to be repaired as a whole or the entire component replaced, which will increase the complexity and cost of the use and maintenance of the reducer, and may require a long downtime. Utility Model Content

[0004] The purpose of the utility model is to provide a dual-speed reducer to address the problems that the reducer in the prior art cannot output two different speeds at the same time and is inconvenient for later use and maintenance. The dual-speed reducer can not only output two different speeds at the same time, but also adopts a modular design to improve the applicability and flexibility of the equipment.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a dual-speed reducer, comprising a primary reduction module and a secondary reduction module, wherein the primary reduction module and the secondary reduction module are connected together in a detachable manner, the secondary reduction module is connected in series with the primary reduction module, the primary reduction module can output a first rotational speed, and the secondary reduction module can output a second rotational speed, and the second rotational speed is less than the first rotational speed.

[0007] As a preferred solution of the utility model, the primary reduction module includes an input end connecting plate, a primary reduction group and a primary transmission disc, the primary reduction group is mounted on the input end connecting plate, and the primary transmission disc is connected to the output end of the primary reduction group to output the first speed;

[0008] The secondary reduction module comprises a secondary reduction group, a secondary transmission disc and an output end connecting plate, wherein the secondary reduction group is mounted on the output end connecting plate, and the input end of the secondary reduction group is connected to the primary transmission disc, and the secondary transmission disc is connected to the output end of the secondary reduction group to output the second speed;

[0009] The input-end connecting plate and the output-end connecting plate are detachably connected together, the secondary transmission disc is a hollow structure, and the output end of the primary transmission disc extends into the hollow structure of the secondary transmission disc to output the first rotational speed.

[0010] As a preferred embodiment of the present invention, the first-stage reduction group includes a first-stage sun gear, a first-stage planetary gear and a first-stage internal gear, the first-stage internal gear is connected to the input end connecting plate, the first-stage sun gear is located at the center of the first-stage internal gear, a plurality of the first-stage planetary gears are meshed with the first-stage sun gear and the first-stage internal gear, a first-stage planetary gear shaft is provided at the center of the first-stage planetary gear, and the first-stage planetary gear shaft is connected to the first-stage transmission disk.

[0011] As a preferred embodiment of the utility model, the secondary reduction group includes a secondary sun gear, a secondary planetary gear and a secondary internal gear, the secondary internal gear is connected to the output end connecting plate, the secondary sun gear is located at the center of the secondary internal gear, the secondary sun gear is connected to the primary transmission disk, a plurality of secondary planetary gears are meshed with the secondary sun gear and the secondary internal gear, a secondary planetary gear shaft is provided at the center of the secondary planetary gear, and the secondary planetary gear shaft is connected to the secondary transmission disk.

[0012] As a preferred solution of the utility model, the primary reduction module also includes a primary connecting sleeve and a primary connecting plate, and the input end connecting plate, the primary reduction group, the primary connecting sleeve and the primary connecting plate are sequentially connected together by bolts.

[0013] As a preferred solution of the utility model, the secondary reduction module also includes a secondary connecting sleeve 1 and a secondary connecting sleeve 2, and the secondary connecting sleeve 1 and the secondary connecting sleeve 2 are respectively located on both sides of the secondary reduction group, and the primary connecting plate, the secondary connecting sleeve 1, the secondary reduction group, the secondary connecting sleeve 2 and the output end connecting plate are sequentially connected together by bolts.

[0014] As a preferred solution of the utility model, the input-end connecting plate is a hollow structure, and flanges are respectively provided at both ends of the input-end connecting plate. The input-end connecting plate is connected to the first-stage reduction group through the flange at one end, and is fixedly connected to the frame through the flange at the other end.

[0015] As a preferred embodiment of the present utility model, the primary transmission disc and the secondary transmission disc both include a disc portion and a shaft portion; the disc portion of the primary transmission disc is connected to the primary reduction group, and the shaft portion of the primary transmission disc is connected to the secondary reduction group; the disc portion of the secondary transmission disc is connected to the secondary reduction group, and the shaft portion of the secondary transmission disc has an axial through hole, and the shaft portion of the primary transmission disc extends into the axial through hole.

[0016] As a preferred solution of the utility model, the shaft portion of the primary transmission disc is provided with an internal spline, and the internal spline is used for adapting and connecting with the external spline on the rotating shaft of the working equipment.

[0017] As a preferred solution of the utility model, the output end connecting plate and the outer circle of the shaft portion of the secondary transmission disc form a slewing support connection.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The two-speed reducer in the utility model can provide two different speeds at the same time. The first speed mode is suitable for high-speed operation and is suitable for situations where fast speed is required, thereby improving production efficiency. The second speed mode is suitable for low-speed operation and is suitable for scenarios where higher torque and greater output torque are required. Since the primary reduction module and the secondary reduction module adopt a modular design, users can choose a combination of different speed modes according to actual needs, thereby improving the applicability and flexibility of the equipment. At the same time, the modular design makes the two-speed reducer more maintainable and upgradeable, reduces the use and maintenance costs and upgrade costs, and at the same time improves production efficiency and equipment reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the double-speed reducer in the utility model;

[0022] Figure 2 This is the principle diagram of the double-speed reducer in the utility model;

[0023] Figure 3 It is a schematic diagram of the combination of some components in the first-stage deceleration module;

[0024] Figure 4This is a schematic diagram of the assembly of some components in the secondary deceleration module.

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 11-input end connecting plate, 12-first-stage transmission disc, 13-first-stage sun gear, 14-first-stage planetary gear, 15-first-stage internal gear, 16-first-stage planetary gear shaft, 17-first-stage connecting sleeve, 18-first-stage connecting plate; 21-secondary transmission disc, 22-output end connecting plate, 23-secondary sun gear, 24-secondary planetary gear, 25-secondary internal gear, 26-secondary planetary gear shaft, 27-secondary connecting sleeve one, 28-secondary connecting sleeve two. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0028] Please refer to Figures 1 to 4 A dual-speed reducer provided in an embodiment of the present application includes a primary reduction module and a secondary reduction module, the primary reduction module and the secondary reduction module are connected together in a detachable manner, the secondary reduction module is connected in series with the primary reduction module, the primary reduction module can output a first speed, and the secondary reduction module can output a second speed, and the second speed is less than the first speed.

[0029] When in use, the primary reduction module is connected to the motor, and the motor speed is reduced by the primary reduction module to obtain a first speed. The secondary reduction module is connected in series with the primary reduction module, that is, the output speed of the primary reduction module is used as the input speed of the secondary reduction module, and the second speed is obtained after the secondary reduction module is reduced again. Therefore, the second speed is less than the first speed. At the same time, the primary reduction module and the secondary reduction module are detachably connected by bolts.

[0030] The dual-speed reducer in the embodiment of the present application can provide two different speeds at the same time. The first speed mode is suitable for high-speed operation and is suitable for situations where fast speed is required to improve production efficiency; the second speed mode is suitable for low-speed operation and is suitable for scenarios where higher torque and greater output torque are required. Since the primary reduction module and the secondary reduction module adopt a modular design, users can choose a combination of different speed modes according to actual needs, thereby improving the applicability and flexibility of the equipment; at the same time, the modular design makes the dual-speed reducer more maintainable and upgradeable, reducing the use and maintenance costs and upgrade costs, while improving production efficiency and equipment reliability.

[0031] According to some embodiments of the present application, the primary reduction module includes an input end connecting plate 11, a primary reduction group and a primary transmission disc 12, the primary reduction group is mounted on the input end connecting plate 11, and the primary transmission disc 12 is connected to the output end of the primary reduction group to output the first speed;

[0032] The secondary reduction module includes a secondary reduction group, a secondary transmission disc 21 and an output end connecting plate 22, wherein the secondary reduction group is mounted on the output end connecting plate 22, and the input end of the secondary reduction group is connected to the primary transmission disc 12, and the secondary transmission disc 21 is connected to the output end of the secondary reduction group to output the second speed;

[0033] Among them, the input end connecting plate 11 and the output end connecting plate 22 are detachably connected together by bolts, the secondary transmission disc 21 is a hollow structure, and the output end of the primary transmission disc 12 extends into the hollow structure of the secondary transmission disc 21 to output the first speed.

[0034] The two-speed reducer is connected to the motor through the input end connecting plate 11. The initial speed of the motor is reduced to a first speed through the gears in the first-stage reduction group, and the first speed is transmitted to the first rotating shaft of the working equipment by the first-stage transmission disc 12; at the same time, the first speed is reduced to a second speed through the gears in the second-stage reduction group, and the second speed is transmitted to the second rotating shaft of the working equipment by the second-stage transmission disc 21, thereby providing two speeds to the working equipment at the same time.

[0035] According to some embodiments of the present application, the first-stage reduction group includes a first-stage sun gear 13, a first-stage planetary gear 14 and a first-stage internal gear 15, the first-stage internal gear 15 is connected to the input-end connecting plate 11, the first-stage sun gear 13 is located at the center of the first-stage internal gear 15, and a plurality of first-stage planetary gears 14 are evenly distributed around the first-stage sun gear 13 and meshed with the first-stage sun gear 13 and the first-stage internal gear 15. A first-stage planetary gear shaft 16 is provided at the center of the first-stage planetary gear 14, and the first-stage planetary gear shaft 16 is connected to the first-stage transmission disk 12.

[0036] The primary reduction group forms a planetary gear train through the primary sun gear 13, two primary planetary gears 14 and the primary internal gear 15. The motor output shaft is connected to the primary sun gear 13, and the primary sun gear 13 performs the first reduction through the two primary planetary gears 14. Since the primary internal gear 15 is connected to the input end connecting plate 11, that is, the position of the primary internal gear 15 is fixed, the two primary planetary gears 14 move in the primary internal gear 15. The primary planetary gear shaft 16 is connected to the primary transmission disc 12 through the saddle screws, and the primary planetary gear 14 transmits the motion to the primary transmission disc 12 through the primary planetary gear shaft 16. The primary transmission disc 12 is connected to the input end of the working equipment through the internal spline, so that the input end of the working equipment obtains the first speed after the primary reduction.

[0037] According to some embodiments of the present application, the secondary reduction group includes a secondary sun gear 23, a secondary planetary gear 24 and a secondary internal gear 25, the secondary internal gear 25 is connected to the output end connecting plate 22, the secondary sun gear 23 is located at the center of the secondary internal gear 25, the secondary sun gear 23 is connected to the primary transmission disk 12, a plurality of secondary planetary gears 24 are evenly distributed around the secondary sun gear 23, and are meshed with the secondary sun gear 23 and the secondary internal gear 25, a secondary planetary gear shaft 26 is provided at the center of the secondary planetary gear 24, and the secondary planetary gear shaft 26 is connected to the secondary transmission disk 21.

[0038] The secondary reduction group forms a planetary gear train through the secondary sun gear 23, three secondary planetary gears 24 and the secondary internal gear 25. The secondary sun gear 23 is fixed on the primary transmission disc 12 by a set screw. The primary transmission disc 12 drives the secondary sun gear 23 to rotate, and transmits the first rotation speed after the first deceleration to the secondary sun gear 23. The rotation speed is decelerated for the second time through the three secondary planetary gears 24. The secondary planetary gear shaft 26 is connected to the secondary transmission disc 21 by saddle screws, and the secondary planetary gear 24 transmits the motion to the secondary transmission disc 21 through the secondary planetary gear shaft 26. The secondary transmission disc 21 transmits the second rotation speed after the second deceleration to the output end of the reducer (i.e., the input end of the working equipment). The secondary transmission disc 21 adopts a hollow form, so that the primary transmission disc 12 can pass through the secondary transmission disc 21 to transmit the first rotation speed to the output end of the reducer. Two different rotation speeds can be transmitted at the same time through two sets of deceleration.

[0039] According to some embodiments of the present application, the primary reduction module further includes a primary connecting sleeve 17 and a primary connecting plate 18, and the input end connecting plate 11, the primary reduction group, the primary connecting sleeve 17 and the primary connecting plate 18 are sequentially connected together by bolts. Specifically, the primary internal gear 15 in the primary reduction group is bolted to the input end connecting plate 11, the primary connecting sleeve 17 and the primary connecting plate 18. The primary connecting plate 18 is also annular, and a bearing seat is connected to its inner side, and a bearing matching the outer circle of the shaft portion of the primary transmission disc 12 is provided in the bearing seat.

[0040] According to some embodiments of the present application, the secondary reduction module also includes a secondary connecting sleeve 1 27 and a secondary connecting sleeve 28, and the secondary connecting sleeve 1 27 and the secondary connecting sleeve 28 are respectively located on both sides of the secondary internal gear 25 in the secondary reduction group, and the primary connecting plate 18, the secondary connecting sleeve 1 27, the secondary internal gear 25, the secondary connecting sleeve 28 and the output end connecting plate 22 are connected together in sequence by bolts.

[0041] The input end connecting plate 11, the primary connecting sleeve 17, the primary connecting plate 18, the secondary connecting sleeve 1 27, the secondary connecting sleeve 2 28 and the output end connecting plate 22 in the two-speed reducer are all connected by bolts and can be cut and processed into various shapes and sizes by steel plates, which are convenient for customization and adapting to different connection requirements. Compared with other integrated reducers, this modular combination method can realize rapid assembly and replacement between them. When a certain component needs to be maintained or replaced, only the affected module can be replaced without replacing the entire reducer as a whole, which saves maintenance costs and time, and reduces the possibility of errors during maintenance.

[0042] According to some embodiments of the present application, the input-end connecting plate 11 is a hollow structure, and flanges are respectively provided at both ends of the input-end connecting plate 11. The input-end connecting plate 11 is connected to the first-stage internal gear 15 in the first-stage reduction group through the flange at one end, and is fixedly connected to the working equipment frame through the flange at the other end.

[0043] According to some embodiments of the present application, the first-stage transmission disc 12 and the second-stage transmission disc 21 both include a disc portion and a shaft portion; the disc portion of the first-stage transmission disc 12 is connected to the first-stage reduction group, and the shaft portion of the first-stage transmission disc 12 is connected to the second-stage reduction group; the disc portion of the second-stage transmission disc 21 is connected to the second-stage reduction group, and the shaft portion of the second-stage transmission disc 21 has an axial through hole, and the shaft portion of the first-stage transmission disc 12 extends into the axial through hole.

[0044] According to some embodiments of the present application, the shaft portion of the primary transmission disc 12 is provided with an internal spline, and the internal spline is used to adapt and connect with the external spline on the rotating shaft of the working equipment, so as to transmit the rotation speed of the primary transmission disc 12 to the rotating shaft of the working equipment.

[0045] According to some embodiments of the present application, the output-end connecting plate 22 is connected to the outer circle of the shaft portion of the secondary transmission disc 21 to form a slewing support. Specifically, a bearing matched with the outer circle of the shaft portion of the secondary transmission disc 21 is arranged in the mounting hole of the output-end connecting plate 22, and a round nut is arranged on the outer circle of the shaft portion of the secondary transmission disc 21 to press the inner ring of the bearing.

[0046] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A dual-speed reducer, characterized in that: It includes a primary deceleration module and a secondary deceleration module, the primary deceleration module and the secondary deceleration module are connected together in a detachable manner, the secondary deceleration module is connected in series with the primary deceleration module, the primary deceleration module can output a first rotational speed, and the secondary deceleration module can output a second rotational speed, and the second rotational speed is less than the first rotational speed.

2. The dual-speed reducer according to claim 1, characterized in that: The primary reduction module comprises an input end connection plate, a primary reduction group and a primary transmission disc, wherein the primary reduction group is mounted on the input end connection plate, and the primary transmission disc is connected to the output end of the primary reduction group to output the first speed; The secondary reduction module comprises a secondary reduction group, a secondary transmission disc and an output end connecting plate, wherein the secondary reduction group is mounted on the output end connecting plate, and the input end of the secondary reduction group is connected to the primary transmission disc, and the secondary transmission disc is connected to the output end of the secondary reduction group to output the second speed; The input-end connecting plate and the output-end connecting plate are detachably connected together, the secondary transmission disc is a hollow structure, and the output end of the primary transmission disc extends into the hollow structure of the secondary transmission disc to output the first rotational speed.

3. The dual-speed reducer according to claim 2, characterized in that: The first-stage reduction group includes a first-stage sun gear, a first-stage planetary gear and a first-stage internal gear. The first-stage internal gear is connected to the input end connecting plate, the first-stage sun gear is located at the center of the first-stage internal gear, a plurality of first-stage planetary gears are meshed with the first-stage sun gear and the first-stage internal gear, a first-stage planetary gear shaft is provided at the center of the first-stage planetary gear, and the first-stage planetary gear shaft is connected to the first-stage transmission plate.

4. The dual-speed reducer according to claim 2, characterized in that: The secondary reduction group includes a secondary sun gear, a secondary planetary gear and a secondary internal gear, the secondary internal gear is connected to the output end connecting plate, the secondary sun gear is located at the center of the secondary internal gear, the secondary sun gear is connected to the primary transmission disk, a plurality of secondary planetary gears are meshed with the secondary sun gear and the secondary internal gear, a secondary planetary gear shaft is provided at the center of the secondary planetary gear, and the secondary planetary gear shaft is connected to the secondary transmission disk.

5. The dual-speed reducer according to any one of claims 2 to 4, characterized in that: The primary reduction module further includes a primary connecting sleeve and a primary connecting plate. The input end connecting plate, the primary reduction group, the primary connecting sleeve and the primary connecting plate are sequentially connected together by bolts.

6. The dual-speed reducer according to claim 5, characterized in that: The secondary reduction module also includes a secondary connecting sleeve 1 and a secondary connecting sleeve 2, and the secondary connecting sleeve 1 and the secondary connecting sleeve 2 are respectively located on both sides of the secondary reduction group, and the primary connecting plate, the secondary connecting sleeve 1, the secondary reduction group, the secondary connecting sleeve 2 and the output end connecting plate are sequentially connected together by bolts.

7. The dual-speed reducer according to any one of claims 2 to 4, characterized in that: The input-end connecting plate is a hollow structure, and flanges are respectively provided at both ends of the input-end connecting plate. The input-end connecting plate is connected to the primary reduction group through the flange at one end, and is fixedly connected to the frame through the flange at the other end.

8. The dual-speed reducer according to any one of claims 2 to 4, characterized in that: The first-stage transmission disc and the second-stage transmission disc each include a disc portion and a shaft portion; the disc portion of the first-stage transmission disc is connected to the first-stage reduction group, and the shaft portion of the first-stage transmission disc is connected to the second-stage reduction group; the disc portion of the second-stage transmission disc is connected to the second-stage reduction group, and the shaft portion of the second-stage transmission disc has an axial through hole, and the shaft portion of the first-stage transmission disc extends into the axial through hole.

9. The dual-speed reducer according to claim 8, characterized in that: The shaft portion of the primary transmission disc is provided with an internal spline, and the internal spline is used for adapting and connecting with the external spline on the rotating shaft of the working equipment.

10. The dual-speed reducer according to claim 9, characterized in that: The output end connecting plate is connected to the outer circle of the shaft portion of the secondary transmission disc to form a slewing support.

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