CN220286343U

CN220286343U - Power transmission device

Info

Publication number: CN220286343U
Application number: CN202321165499.2U
Authority: CN
Inventors: 何泽江; 何子夜
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2024-01-02
Anticipated expiration: 2033-05-15

Abstract

The utility model discloses a power transmission device, which comprises a chassis seat, wherein the chassis seat comprises a connecting shaft, a right bracket and a chassis arranged between the connecting shaft and the right bracket; the connecting shaft is rotationally connected with an input shaft, the right bracket is rotationally connected with an output shaft, and the input shaft and the output shaft are coaxially arranged; a drive bevel gear is coaxially and fixedly arranged on the end, far away from the connecting shaft, of the input shaft, a transmission bevel gear is coaxially and fixedly arranged on the output shaft, a driven bevel gear is coaxially and fixedly arranged on the end, far away from the right bracket, of the output shaft, and the drive bevel gear is connected with the driven bevel gear through a transmission mechanism; the transmission mechanism comprises a transmission disc, the center of the disc surface of the transmission disc is rotationally connected with a middle bevel gear, a locking rim is coaxially and fixedly arranged on one side of the disc surface of the transmission disc, which is close to the driven bevel gear, and the locking rim is coaxially and rotationally connected with the driven shaft. The device can realize independent driving of the wheels, has compact structure and no interference with other parts of the vehicle, and is beneficial to early installation and later maintenance.

Description

Power transmission device

Technical Field

The utility model belongs to the technical field of mechanical power transmission, and particularly relates to a power transmission device.

Background

Patent C N110435781a discloses a driving mechanism in which power cannot be transmitted to a drum because the left and right end caps of the driving mechanism are not locked. When the unidirectional bearing drives the power bevel gear to rotate reversely, the unidirectional bearing drives the left end cover to rotate reversely, and the two planetary transmission shafts 14 of the left end cover drive the right end cover to rotate reversely. When the left end cover and the right end cover are simultaneously reversed, the two transmission shafts on the end covers are driven to be reversed. At this time. Under the condition that the roller is negative, the two shafts drive the planetary gears 13 of the inner ring of the roller to slip and rotate along the inner ring. Driven by the chain, the driven bevel gear 6 also rotates clockwise. That is, the planetary gear of the inner ring of the roller, along with the two shafts and the two end covers, synchronously slide and rotate reversely on the same inner ring of the roller. At this time, the roller does not have any power input or output. Has significant defects, has no use and is a useless application. Meanwhile, in the specification 0029 of the patent, the power transmission shaft of the steering wheel is mounted on the drum, so that no power is input and output.

Patent C N113483073a discloses an instantaneous synchronous differential which also has a great disadvantage as a power transmission between the power unit and the wheels: 1. when the power transmission of the differential mechanism is relatively large, the clutch and the brake on the disc of the differential mechanism are easy to slip, the power cannot be completely transmitted, and the clutch and the brake have the defects of complex structure, heavy weight, difficult installation and difficult operation; 2. the wheel carrier 1 is sleeved on the input shaft 5, so that the friction force between the input shaft and the wheel carrier is increased under the condition that the wheel carrier is loaded, and part of the power of the input shaft is also lost, which is a great defect; 3. the differential disc is locked on the wheel carrier, and when the wheel carrier moves up and down, the feedback problem of the reaction force under the same power cannot be eliminated. There are significant drawbacks. Therefore, further improvements to address these issues are needed.

Disclosure of Invention

The utility model provides a power transmission device which can realize independent driving of wheels, has a compact structure and no interference with other parts of a vehicle, and is beneficial to early installation and later maintenance so as to solve the problems in the background technology.

The technical scheme of the utility model is as follows: the power transmission device comprises a chassis seat, wherein the chassis seat comprises a connecting shaft, a right bracket and a chassis arranged between the connecting shaft and the right bracket; the connecting shaft is rotationally connected with an input shaft, the right bracket is rotationally connected with an output shaft, the input shaft and the output shaft are coaxially arranged, a one-way bearing is coaxially and fixedly arranged on the input shaft, and a power input part is coaxially and fixedly arranged on the outer ring of the one-way bearing; the end, far away from the connecting shaft, of the input shaft is coaxially and fixedly provided with a driving bevel gear, the end, far away from the right bracket, of the output shaft is coaxially and fixedly provided with a driving bevel gear, and the driving bevel gear is connected with the driven bevel gear through a transmission mechanism; the transmission mechanism comprises a transmission disc, wherein the center of the disc surface of the transmission disc is rotationally connected with a middle bevel gear, a driving bevel gear is meshed with the middle bevel gear, the middle bevel gear is meshed with a driven bevel gear, and the driving bevel gear transmits power to the driven bevel gear through the middle bevel gear; a locking rim is coaxially and fixedly arranged on one side, close to the driven bevel gear, of the disc surface of the transmission disc;

the steering frame is rotationally connected with the underframe of the chassis seat through a bearing, and the part of the steering frame far away from the chassis seat is rotationally connected with wheels; the transmission shaft is perpendicular to the rotation axis of the output shaft, a first transmission bevel gear is coaxially and fixedly arranged on the end, close to the output shaft, of the transmission shaft, and the first transmission bevel gear is meshed with the transmission bevel gear; the end part of the transmission shaft, which is far away from the bogie, is in transmission connection with the wheels through a gear pair;

the bogie is also provided with an electromagnetic suction mechanism, the electromagnetic suction mechanism comprises an electromagnetic chuck and a locking ring, the electromagnetic chuck is fixedly arranged on the bogie, the locking ring is sleeved on the bogie, and the locking ring is connected with the bogie in an up-and-down sliding way; the steering frame is sleeved with a reset spring, and two ends of the reset spring are respectively and fixedly connected with the electromagnetic chuck and the locking ring.

Further: the edge of the disc surface of the locking ring and the edge of the disc surface of the locking rim are provided with saw teeth.

The beneficial effects are that: the scheme provides a power transmission device, and the power transmission device is widely applied, and when the power transmission device is particularly applied to a certain wheel, the impact on the external power of a vehicle or the whole transmission system caused by climbing or descending of the wheel and the like can be eliminated, and the stability of a chassis of the vehicle is maintained.

The power transmission device has only a power input part in driving connection with a power unit of the vehicle and a transmission shaft in driving connection with wheels. The power transmission device can realize independent existence of other parts of the vehicle and realize the function of power transmission. The installation and the later maintenance are simpler. And meanwhile, the device is more suitable for independently driving each wheel by the power transmission device, and the differential speed requirement required by different wheels at the same instant under the driving of the same power unit is realized.

Drawings

Fig. 1 is a schematic view of a power transmission device according to the present utility model.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, the present utility model discloses a power transmission device including a chassis base 1, the chassis base 1 including a connection shaft 1a, a right bracket 1b, and a bottom chassis 1c between the connection shaft 1a and the right bracket 1 b. Also included is a pin 20. The connecting shaft 1a is rotatably connected with an input shaft 4, the right bracket 1b is rotatably connected with an output shaft 10, and the input shaft 4 and the output shaft 10 are coaxially arranged.

The input shaft 4 is coaxially and fixedly provided with a one-way bearing 2, and the outer ring of the one-way bearing 2 is coaxially and fixedly provided with a power input part 3. The power input member 3 may be a gear, a pulley, a sprocket, or the like. A drive bevel gear 5 is coaxially and fixedly arranged on the end of the input shaft 4 far away from the connecting shaft 1 a.

The output shaft 10 is coaxially and fixedly provided with a transmission bevel gear 11, and the end of the output shaft 10 far away from the right bracket 1b is coaxially and fixedly provided with a driven bevel gear 9. The drive bevel gear 5 is connected with the driven bevel gear 9 through a transmission mechanism. The transmission mechanism comprises a transmission disc 7, a middle bevel gear 6 is rotatably connected to the center of the disc surface of the transmission disc 7, a driving bevel gear 5 is meshed with the middle bevel gear 6, the middle bevel gear 6 is meshed with a driven bevel gear 9, and the driving bevel gear 5 transmits power to the driven bevel gear 9 through the middle bevel gear 6.

It should be noted that: in the case where the drive disk 7 is not fixed, the drive bevel gear 5 cannot transmit power to the driven bevel gear 9 through the intermediate bevel gear 6. Because the drive bevel gear 5 drives the intermediate bevel gear 6, the power transmitted from the drive bevel gear 5 to the intermediate bevel gear 6 is unloaded by the rotational rotation of the drive disk 7. The power on the drive bevel gear 5 is not caused to be transmitted to the driven bevel gear 9 through the intermediate bevel gear 6 unless the disk surface of the drive disk 7 is fixed.

A locking rim 8 is coaxially and fixedly arranged on one side of the disc surface of the transmission disc 7, which is close to the driven bevel gear 9. As shown in fig. 1: by organically combining and connecting the drive bevel gear 5, the intermediate bevel gear 6, the driving disk 7 and the driven shaft together by means of the locking rim 8, not only is a more stable construction achieved, but also the locking rim can achieve a power transmission, which will be explained in the following description.

The steering frame 19 is rotatably connected with the underframe 1c of the chassis seat 1 through a bearing, and wheels 18 are rotatably connected to the position, away from the chassis seat 1, of the steering frame 19; the transmission shaft 13 is arranged on the end, close to the output shaft 10, of the transmission shaft 13 in a coaxial and fixed manner, and a first transmission bevel gear 12 is meshed with the transmission bevel gear 11; the end part of the transmission shaft 13 far away from the bogie 19 is in transmission connection with the wheels 18 through a gear pair 17;

the bogie 19 is also provided with an electromagnetic suction mechanism, the electromagnetic suction mechanism comprises an electromagnetic chuck 15 and a locking ring 14, the electromagnetic chuck 15 is fixedly arranged on the bogie 19, the locking ring 14 is sleeved on the bogie 19, and the locking ring 14 is connected with the bogie 19 in an up-down sliding manner; the bogie 19 is sleeved with a return spring 16, and two ends of the return spring 16 are fixedly connected to the electromagnetic chuck 15 and the locking ring 14 respectively.

The edge of the disk surface of the locking ring 14 and the edge of the disk surface of the locking rim 8 are provided with saw teeth. When the disk surface edge of the locking ring 14 is contacted with the disk surface edge of the locking rim 8, the locking rim is fixed by the locking ring 14 through the saw teeth, and the effect of fixing the transmission disk 7 is achieved. Of course, the saw tooth structure is not necessarily required, and the friction structure is also applicable.

The specific embodiments are as follows: the power unit of the vehicle drives the one-way bearing 2 to rotate, and the one-way bearing 2 drives the input shaft 4 to rotate in a one-way. In this process, the drive bevel gear 5 synchronously drives the driven bevel gear 9 to rotate through the intermediate bevel gear 6, and the driving disc 7 needs to be subjected to locking operation, otherwise, the driving disc 7 can rotate due to the fact that power cannot be transmitted.

Therefore, we have devised to mount the locking rim 8 on the drive plate 7. On the one hand, the locking wheel rim 8 can be synchronously locked, so that the aim of locking the transmission disc 7 is fulfilled, and the power output is realized.

Of course, the locking rim 8 is not operated directly by other structures on the vehicle in this particular preferred embodiment, which may facilitate the present utility model being able to be mounted as independently as possible to the vehicle drive wheel 18 while maintaining product independence and minimizing impact on other components of the existing vehicle.

The drive bevel gear 11 on the output shaft 10 meshes with the first transmission bevel gear 12 on the transmission shaft 13, which can cause the power on the output shaft 10 to transmit output to the transmission shaft 13 through the drive bevel gear 11 and the first transmission bevel gear 12. In order to facilitate the locking of the locking rim 8, the locking is performed by an electromagnetic attraction mechanism. Normally, the electromagnetic chuck 15 is not energized, and the electromagnetic chuck 15 does not generate attractive force. Under the action of the elastic force of the return spring 16, the locking ring 14 is pushed into the locking ring, the edge of the locking ring 14 and the edge of the locking ring are in contact with each other and are in a clamping state, at this time, the transmission disc 7 is locked, and power can be transmitted to the transmission shaft 13 through the input shaft 4.

When the electromagnetic chuck 15 is electrified to generate attractive force, the locking ring 14 slides downwards against the elastic force of the return spring 16 by utilizing the attractive force, at the moment, the locking ring 14 and the locking ring 8 are separated from each other, the transmission disk 7 and the coaxially connected locking ring 8 are in a rotatable state, and at the moment, the power transmission from the input shaft 4 to the transmission shaft 13 is interrupted.

The whole power transmission is integrally and externally output through the transmission shaft 13, and the transmission shaft 13 drives the wheels 18 through the gear pair 17. The power transmission device in this embodiment has only the power input member 3 in driving connection with the power unit of the vehicle and the transmission shaft in driving connection with the wheels 18. The power transmission device can realize independent existence of other parts of the vehicle and realize the function of power transmission. The installation and the later maintenance are simpler. And is more suitable for the power transmission device to independently drive each wheel 18 and realize the differential speed requirement required by different wheels 18 at the same instant under the drive of the same power unit.

It should be noted that: the wheels 18 in the scheme are connected with the chassis base 1 through the bogie 19, specifically: the bogie 19 is rotatably connected with the underframe 1c of the chassis base 1 through a bearing, the rotation direction of the bogie 19 is coaxially arranged with the transmission shaft 13, and the bogie 19 can rotate clockwise or counterclockwise, so that the wheels 18 are driven to rotate clockwise or counterclockwise through the bogie 19. The outer ring of the electromagnetic chuck 15 is sleeved with a gear or a chain wheel, so that the motor-driven bogie is convenient to use.

It should be noted that, the synchronous differential of the present utility model may be applied not only to the above fields such as vehicle chassis, but also to the working conditions of wheelchairs, crawler-type mechanisms, farm machinery, robots, special equipment and other very-used equipment, and the application range is wide, and the specific application field still needs to be further developed by those skilled in the art.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A power transmission device characterized in that: the novel multifunctional electric power transmission device comprises a chassis seat (1), wherein the chassis seat (1) comprises a connecting shaft (1 a), a right bracket (1 b) and a bottom frame (1 c) positioned between the connecting shaft (1 a) and the right bracket (1 b); an input shaft (4) is rotationally connected to the connecting shaft (1 a), an output shaft (10) is rotationally connected to the right bracket (1 b), the input shaft (4) and the output shaft (10) are coaxially arranged, a one-way bearing (2) is coaxially and fixedly arranged on the input shaft (4), and a power input part (3) is coaxially and fixedly arranged on the outer ring of the one-way bearing (2); the end, far away from the connecting shaft (1 a), of the input shaft (4) is coaxially and fixedly provided with a driving bevel gear (5), the end, far away from the right bracket (1 b), of the output shaft (10) is coaxially and fixedly provided with a driving bevel gear (11), the end, far away from the right bracket (1 b), of the output shaft (10) is coaxially and fixedly provided with a driven bevel gear (9), and the driving bevel gear (5) is connected with the driven bevel gear (9) through a transmission mechanism; the transmission mechanism comprises a transmission disc (7), wherein the center of the disc surface of the transmission disc (7) is rotationally connected with a middle bevel gear (6), the driving bevel gear (5) is meshed with the middle bevel gear (6), the middle bevel gear (6) is meshed with a driven bevel gear (9), and the driving bevel gear (5) transmits power to the driven bevel gear (9) through the middle bevel gear (6); a locking rim (8) is coaxially and fixedly arranged on one side, close to the driven bevel gear (9), of the disc surface of the transmission disc (7); the steering system further comprises a steering frame (19), wherein the steering frame (19) is rotationally connected with the underframe (1 c) of the chassis seat (1) through a bearing, and wheels (18) are rotationally connected at the position, away from the chassis seat (1), of the steering frame (19); the transmission shaft (13) is perpendicular to the rotation axis of the output shaft (10), a first transmission bevel gear (12) is coaxially and fixedly arranged on the end, close to the output shaft (10), of the transmission shaft (13), and the first transmission bevel gear (12) is meshed with the transmission bevel gear (11); the end part of the transmission shaft (13) far away from the bogie (19) is in transmission connection with the wheels (18) through a gear pair (17); an electromagnetic suction mechanism is further arranged on the bogie (19), the electromagnetic suction mechanism comprises an electromagnetic chuck (15) and a locking ring (14), the electromagnetic chuck (15) is fixedly arranged on the bogie (19), the locking ring (14) is sleeved on the bogie (19), and the locking ring (14) is connected with the bogie (19) in an up-down sliding mode; the bogie (19) is sleeved with a return spring (16), and two ends of the return spring (16) are respectively and fixedly connected to the electromagnetic chuck (15) and the locking ring (14).

2. A power transmission device according to claim 1, characterized in that: the disc surface edge of the locking ring (14) and the disc surface edge of the locking rim (8) are provided with saw teeth; the outer ring of the electromagnetic chuck (15) is sleeved with a gear or a chain wheel, so that the bogie is conveniently driven by a motor.