Multifunctional integrated transmission device

Abstract

The invention discloses a multifunctional integrated transmission device which comprises a mounting seat, an output shaft is arranged in the mounting seat and connected with a first center wheel, the first center wheel is externally meshed with a plurality of first planet wheels, the first planet wheels are rotationally connected to a first planet carrier, and the first planet carrier is connected with the output shaft. A second center wheel is assembled in the center of the first planet carrier, a plurality of second planet wheels are externally meshed with the second center wheel, the second planet wheels are rotationally connected to the second planet carrier, and movable gear rings are externally meshed with the second planet wheels; a gear ring shell is arranged between the mounting base and the first center wheel, a clutch and a clutch piston assembly for controlling the clutch to work are arranged between the gear ring shell and the first center wheel, and a brake and a brake piston assembly for controlling the brake to work are arranged between the gear ring shell and the mounting base. The device has the advantages that the structure is reasonable and compact, a braking state and a free wheel state can be realized, and the transmission ratio can be controlled and selected.

Description

Technical Field

[0001] The invention relates to the technical field of transmission devices, in particular to a multifunctional integrated transmission device. Background Art

[0002] The reducer matches the speed and transmits torque between the prime mover and the working machine or actuator. A planetary reducer is a type of reducer that can reduce the speed while increasing the output torque through the rotation of the planetary gear around the sun gear. Planetary reducers have the advantages of light weight, small size, and a wide range of transmission ratios, and are widely used in mechanical equipment.

[0003] Traditional planetary reducers only play the role of reducing rotational speed and increasing torque, and can no longer meet the requirements of many existing mechanical equipment for compact structure and integrated functions. Therefore, it is necessary to further improve the structure of planetary reducers. Summary of the invention

[0004] The purpose of the present invention is to make up for the above-mentioned deficiencies and to disclose to the public a multifunctional integrated transmission device which has a reasonable and compact structure, can realize a braking state and a free-wheel state, and can also control and select a transmission ratio.

[0005] The technical solution of the present invention is achieved in this way: A multifunctional integrated transmission device includes a mounting seat, an output shaft is arranged in the mounting seat, a first center wheel is mounted on the output shaft, a plurality of first planetary wheels are meshed externally on the first center wheel, the first planetary wheels are rotatably connected to the first planetary carrier, the first planetary carrier is connected to the output shaft, a second center wheel is mounted at the center of the first planetary carrier, a plurality of second planetary wheels are meshed externally on the second center wheel, the second planetary wheels are rotatably connected to the second planetary carrier, and a movable ring gear is meshed externally on the second planetary gear; a ring gear housing is arranged between the mounting seat and the first center wheel, a clutch and a clutch piston assembly for controlling the operation of the clutch are arranged between the ring gear housing and the first center wheel, and a brake and a brake piston assembly for controlling the operation of the brake are arranged between the ring gear housing and the mounting seat.

[0006] The measures to further optimize this technical solution are: As an improvement, the clutch is a normally closed hydraulic clutch composed of multiple disc friction plates, and the brake is a normally closed hydraulic brake composed of multiple disc friction plates.

[0007] As an improvement, the first center wheel is connected to the inner connecting piece of the friction plate of the clutch, and the ring gear housing is connected to the outer connecting piece of the friction plate of the clutch.

[0008] As an improvement, the outer circle of the gear ring housing is connected to the inner connecting piece of the friction plate of the brake, and the mounting seat is connected to the outer connecting piece of the friction plate of the brake.

[0009] As an improvement, a plurality of supporting gears are arranged between the movable ring gear and the second planet carrier, and the supporting gears are meshed with the movable ring gear and the second planet carrier.

[0010] As an improvement, a support seat is arranged inside the mounting seat, and a supporting bearing is arranged between the support seat and the gear ring housing.

[0011] As an improvement, the clutch piston assembly includes a clutch piston spring and a clutch piston pressure plate sleeve, and a ball bearing is arranged between the clutch piston pressure plate sleeve and the support seat.

[0012] As an improvement, the brake piston assembly includes a brake piston spring and a brake piston pressure plate sleeve.

[0013] As an improvement, the output shaft is driven by an electric motor or a hydraulic motor.

[0014] As an improvement, the mounting seat is provided with a flushing oil inlet and a flushing oil return port.

[0015] The advantages of the present invention compared with the prior art are: A multifunctional integrated transmission device of the present invention has a reasonable structure. By arranging two sets of planetary transmission structures in the transmission device, and arranging a clutch and a brake, a braking state, a free wheel state and two transmission states with different transmission ratios can be realized by controlling the clutch and the brake. The integrated transmission device of the present invention integrates four states into one, which is conducive to the miniaturization and compactness of mechanical equipment.

[0016] Specifically, firstly, when hydraulic oil is not passed through the clutch and the brake, working and parking braking can be achieved; secondly, when hydraulic oil is passed through the clutch and the brake, the transmission device will be in a free wheel state; thirdly, the brake is not passed through hydraulic oil (normally closed), and the clutch is opened with hydraulic oil. At this time, the first-stage planetary transmission structure functions normally to achieve a certain transmission ratio; fourthly, the brake is opened with hydraulic oil, and the clutch is not passed through hydraulic oil (normally closed). At this time, the first-stage planetary transmission structure does not work, and the output shaft directly drives the next-stage center wheel through the planetary carrier of the first-stage planetary transmission structure to achieve planetary transmission, thereby achieving another transmission ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural diagram of the present invention; Figure 2 yes Figure 1 Enlarged view of part A in the middle; Figure 3 yes Figure 1 Enlarged view of middle part B; Figure 4 It is a side view of the present invention.

[0018] The names of the reference numerals in the accompanying drawings of the present invention are: Mounting seat 1, flushing oil inlet 1a, flushing oil return port 1b, output shaft 2, first center wheel 31, first planetary wheel 32, first planetary carrier 33, second center wheel 41, second planetary wheel 42, second planetary carrier 43, movable ring gear 5, ring gear housing 6, clutch 7, clutch piston assembly 71, clutch piston spring 71a, clutch piston pressure plate sleeve 71b, brake 8, brake piston assembly 81, brake piston spring 81a, brake piston pressure plate sleeve 81b, support seat 9, support bearing 91, ball bearing 92. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings: The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0021] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0022] like Figures 1 to 4As shown, a multifunctional integrated transmission device includes a mounting seat 1, an output shaft 2 is arranged in the mounting seat 1, a first center wheel 31 is mounted on the output shaft 2, the first center wheel 31 is externally meshed with a plurality of first planetary wheels 32, the first planetary wheels 32 are rotatably connected to the first planetary carrier 33, the first planetary carrier 33 is connected to the output shaft 2, a second center wheel 41 is mounted at the center of the first planetary carrier 33, the second center wheel 41 is externally meshed with a plurality of second planetary wheels 42, the second planetary wheels 42 are rotatably connected to the second planetary carrier 43, the second planetary wheels 42 are externally meshed with a movable ring gear 5; a ring gear housing 6 is arranged between the mounting seat 1 and the first center wheel 31, a clutch 7 and a clutch piston assembly 71 for controlling the operation of the clutch 7 are arranged between the ring gear housing 6 and the first center wheel 31, a brake 8 and a brake piston assembly 81 for controlling the operation of the brake 8 are arranged between the ring gear housing 6 and the mounting seat 1.

[0023] The first center wheel 31, the first planetary wheel 32, and the first planetary carrier 33 constitute a first-stage planetary transmission structure, and the second center wheel 41, the second planetary wheel 42, and the second planetary carrier 43 constitute a next-stage planetary transmission structure. During use, the transmission ratio is selected by controlling the clutch 7 and the brake 8, and two transmission states with different transmission ratios can be formed. When the first-stage planetary transmission structure works, the first-stage planetary transmission structure and the next-stage planetary transmission structure work together to form one transmission ratio; when the first-stage planetary transmission structure does not work, only the next-stage planetary transmission structure works to form another transmission ratio.

[0024] The clutch 7 is a normally closed hydraulic clutch composed of multiple disc friction plates, and the brake 8 is a normally closed hydraulic brake composed of multiple disc friction plates.

[0025] The first center wheel 31 is connected to the inner connecting piece of the friction plate of the clutch 7 , and the ring gear housing 6 is connected to the outer connecting piece of the friction plate of the clutch 7 .

[0026] The outer circle of the gear ring housing 6 is connected to the inner connecting piece of the friction plate of the brake 8 , and the mounting seat 1 is connected to the outer connecting piece of the friction plate of the brake 8 .

[0027] A plurality of supporting gears 51 are disposed between the movable gear ring 5 and the second planet carrier 43 , and the supporting gears 51 are meshed with the movable gear ring 5 and the second planet carrier 43 .

[0028] A support seat 9 is arranged inside the mounting seat 1, and a support bearing 91 is arranged between the support seat 9 and the gear ring housing 6. The support bearing 91 can withstand a large axial force.

[0029] The clutch piston assembly 71 includes a clutch piston spring 71 a and a clutch piston pressure plate sleeve 71 b . A ball bearing 92 is disposed between the clutch piston pressure plate sleeve 71 b and the support seat 9 .

[0030] A bearing is also provided between the movable gear ring 5 and the mounting seat 1 to improve the rotation flexibility of the movable gear ring 5 .

[0031] The brake piston assembly 81 includes a brake piston spring 81a and a brake piston pressure plate sleeve 81b.

[0032] The output shaft 2 is driven by an electric motor or a hydraulic motor.

[0033] The mounting seat 1 is provided with a flushing oil inlet 1a and a flushing oil return port 1b, which can be used to flush and cool the components in the transmission device.

[0034] Working principle: The integrated transmission device of the present invention mainly includes an output shaft 2 driven by an electric motor or a hydraulic motor, and the transmission ratio is selected by controlling a clutch 7 and a brake 8, and the wheel or drum is driven in the form of shell rotation or shaft rotation through a planetary transmission structure.

[0035] In the integrated transmission device of the present invention, a clutch 7 and a brake 8 are provided. The clutch 7 is a normally closed hydraulic clutch composed of a disc-type multi-friction plate, and the brake 8 is a normally closed hydraulic brake composed of a disc-type multi-friction plate.

[0036] The inner connecting piece of the friction plate of the clutch 7 is connected to the first center wheel 31, and the outer connecting piece of the friction plate of the clutch 7 is connected to the ring gear housing 6. When the clutch piston assembly 71 is not connected to hydraulic oil, the clutch 7 is closed under the action of the clutch piston spring 71a, the first center wheel 31 and the ring gear housing 6 form a whole, and the first-stage planetary transmission structure fails. When the clutch piston assembly 71 is connected to hydraulic oil, the oil pressure overcomes the elastic force of the clutch piston spring 71a, so that the friction plate of the clutch 7 is separated and opened, and the first-stage planetary transmission structure works.

[0037] The inner connecting piece of the friction plate of the brake 8 is connected to the outer circle of the ring gear housing 6, and the outer connecting piece of the friction plate of the brake 8 is connected to the mounting seat 1. When the brake piston assembly 81 is not connected to hydraulic oil, the brake 8 is closed under the action of the brake piston spring 81a, and the ring gear housing 6 and the mounting seat 1 form a whole. When the brake piston assembly 81 is connected to hydraulic oil, the oil pressure overcomes the elastic force of the brake piston spring 81a, so that the friction plate of the brake 8 is separated and opened.

[0038] The following four states can be achieved by controlling the clutch 7 and the brake 8.

[0039] First, when the clutch 7 and the brake 8 are both without hydraulic oil, the clutch 7 and the brake 8 are closed at the same time. At this time, the mounting seat 1, the ring gear housing 6 and the first center wheel 31 form a whole, and working and parking braking can be achieved.

[0040] Secondly, when hydraulic oil is introduced into the clutch 7 and the brake 8, the clutch 7 and the brake 8 are opened at the same time, the ring gear housing 6 and the mounting seat 1 can rotate relative to each other, and the first center wheel 31 and the ring gear housing 6 can also rotate relative to each other. At this time, the transmission device will be in a free wheel state.

[0041] Third, the brake 8 is not connected to hydraulic oil (normally closed), and the clutch 7 is opened by hydraulic oil. At this time, the first-stage planetary transmission structure functions normally, and the output shaft 1 drives the first center wheel 31 to rotate, and the first center wheel 31 cooperates with the first planetary wheel 32. At the same time, the output shaft 1 drives the first planetary carrier 33 to rotate, thereby driving the second center wheel 41 to rotate, and the second center wheel 41 cooperates with the second planetary wheel 42 to drive the movable ring gear 5 to rotate. At this time, the first-stage planetary transmission structure and the next-stage planetary transmission structure work at the same time, and the two work together to realize a transmission ratio.

[0042] Fourthly, the brake 8 is opened by hydraulic pressure, and the clutch 7 is not connected with hydraulic oil (normally closed). At this time, the first-stage planetary transmission structure does not work, and the output shaft 1 directly transmits the second center wheel 41 of the next-stage planetary transmission structure through the first planetary carrier 33 of the first-stage planetary transmission structure. The second center wheel 41 cooperates with the second planetary wheel 42 to drive the movable ring gear 5 to rotate. At this time, only the next-stage planetary transmission structure works, thereby realizing another transmission ratio (i.e., the transmission ratio of the next-stage planetary transmission structure).

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional integrated transmission device, comprising a mounting seat (1), characterized in that: An output shaft (2) is arranged in the mounting seat (1), and a first central wheel (31) is mounted on the output shaft (2), and a plurality of first planetary wheels (32) are meshed on the outside of the first central wheel (31), and the first planetary wheels (32) are rotatably connected to a first planetary carrier (33), and the first planetary carrier (33) is connected to the output shaft (2), and a second central wheel (41) is mounted at the center of the first planetary carrier (33), and a plurality of second planetary wheels (42) are meshed on the outside of the second central wheel (41), and the second planetary wheels ( 42) is rotatably connected to the second planetary carrier (43), and the second planetary gear (42) is meshed with a movable ring gear (5) on the outside; a ring gear housing (6) is arranged between the mounting seat (1) and the first center wheel (31), a clutch (7) and a clutch piston assembly (71) for controlling the operation of the clutch (7) are arranged between the ring gear housing (6) and the first center wheel (31), and a brake (8) and a brake piston assembly (81) for controlling the operation of the brake (8) are arranged between the ring gear housing (6) and the mounting seat (1).

2. A multifunctional integrated transmission device according to claim 1, characterized in that: The clutch (7) is a normally closed hydraulic clutch composed of a disc-type multi-friction plate, and the brake (8) is a normally closed hydraulic brake composed of a disc-type multi-friction plate.

3. A multifunctional integrated transmission device according to claim 2, characterized in that: The first central wheel (31) is connected to the inner connecting piece of the friction plate of the clutch (7), and the ring gear housing (6) is connected to the outer connecting piece of the friction plate of the clutch (7).

4. A multifunctional integrated transmission device according to claim 3, characterized in that: The outer circle of the gear ring housing (6) is connected to the inner connecting piece of the friction plate of the brake (8), and the mounting seat (1) is connected to the outer connecting piece of the friction plate of the brake (8).

5. A multifunctional integrated transmission device according to claim 4, characterized in that: A plurality of supporting gears (51) are arranged between the movable gear ring (5) and the second planet carrier (43), and the supporting gears (51) are meshed with the movable gear ring (5) and the second planet carrier (43).

6. A multifunctional integrated transmission device according to claim 5, characterized in that: A support seat (9) is arranged inside the mounting seat (1), and a supporting bearing (91) is arranged between the support seat (9) and the gear ring housing (6).

7. A multifunctional integrated transmission device according to claim 6, characterized in that: The clutch piston assembly (71) comprises a clutch piston spring (71a) and a clutch piston pressure plate sleeve (71b), and a ball bearing (92) is arranged between the clutch piston pressure plate sleeve (71b) and the support seat (9).

8. A multifunctional integrated transmission device according to claim 7, characterized in that: The brake piston assembly (81) comprises a brake piston spring (81a) and a brake piston pressure plate sleeve (81b).

9. A multifunctional integrated transmission device according to claim 8, characterized in that: The output shaft (2) is driven by an electric motor or a hydraulic motor.

10. A multifunctional integrated transmission device according to claim 9, characterized in that: The mounting seat (1) is provided with a flushing oil inlet (1a) and a flushing oil return port (1b).

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