A drive shaft with a piston-type shock absorbing structure

Abstract

The utility model provides a transmission shaft with piston type damping structure, mainly solves the problem that current transmission shaft damping effect is poor, its characterized in be still including oil chamber (11), be located first half axle axial end face, for storing oil, piston (21), be located the second half axle of inreaching oil chamber, its circumferential outer wall and oil chamber's inner wall sealed cooperation and divide oil chamber into first chamber (111) and second chamber (112), piston shifts with the axial displacement of second half axle and shifts, oil pipe (5), one end with first chamber intercommunication, the other end with second chamber intercommunication, the utility model provides a transmission shaft with piston type damping structure, utilizes the damping effect of hydraulic oil of piston two sides, and the damping effect is remarkable, can effectively attenuate the vibration in transmission shaft transmission process, promotes the stability of transmission shaft work.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a drive shaft with a piston-type shock absorption structure. Background Technology

[0002] In vehicles, construction machinery, and other equipment, drive shafts are used to transmit power. Due to factors such as vibration and load changes during equipment operation, drive shafts vibrate during operation, affecting not only the smoothness of transmission but also accelerating the wear of the drive shaft and related components, reducing the service life and reliability of the equipment. Traditional drive shaft vibration damping measures are relatively simple, such as using only rubber pads and other cushioning components, with limited damping effect and difficulty in adapting to complex working conditions and large vibration amplitudes. Therefore, a vibration damping device that can effectively attenuate drive shaft vibration and has a reliable structure is needed. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a drive shaft with a piston-type shock absorption structure, which mainly solves the problem of poor shock absorption effect of current drive shafts.

[0004] The technical solution of this utility model is as follows:

[0005] A drive shaft with a piston-type shock absorption structure includes a first half-shaft and a second half-shaft. One end of the first half-shaft is connected to a first universal joint, and one end of the second half-shaft is connected to a second universal joint. It also includes...

[0006] An oil chamber, located inside the first half-shaft, is used to store oil;

[0007] A piston is mounted on a second half-shaft that extends into the oil chamber. Its circumferential outer wall is sealed to the inner wall of the oil chamber and divides the oil chamber into a first chamber and a second chamber. The piston moves with the axial displacement of the second half-shaft.

[0008] An oil guide tube, one end of which is connected to the first chamber and the other end of which is connected to the second chamber.

[0009] A guide sleeve is installed on the first half-shaft, and the guide sleeve is provided with a through hole for the second half-shaft to pass through.

[0010] The inner wall of the through hole is provided with a sealing ring that seals with the second half-shaft.

[0011] The oil cavity includes an opening, and the guide sleeve covers the opening.

[0012] The piston has a second sealing ring on its circumferential outer wall, and the second sealing ring is in a sealing fit with the inner wall of the oil chamber.

[0013] The inner wall of the through hole is provided with a first transmission part, and the second half shaft is provided with a second transmission part. The first transmission part and the second transmission part cooperate to transmit torque.

[0014] The guide sleeve is connected to the axial outer wall of the first half-shaft by a pin.

[0015] It also includes an end cap, which is connected to the axial outer wall of the guide sleeve.

[0016] The end cap is made of ST12, and the guide sleeve is made of 406 steel.

[0017] The beneficial effects of this utility model are: This utility model provides a transmission shaft with a piston-type shock absorption structure, which uses hydraulic oil on both sides of the piston to play a shock absorption role. The shock absorption effect is significant, which can effectively attenuate the vibration during the transmission process of the transmission shaft and improve the stability of the transmission shaft operation. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0019] Figure 2 for Figure 1 An enlarged diagram of point A in the diagram.

[0020] Figure 3 for Figure 1 An enlarged diagram of point B in the diagram.

[0021] Figure 4 This is a partial cross-sectional view of one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. A transmission shaft with a piston-type shock-absorbing structure includes a first half-shaft 1 and a second half-shaft 2. One end of the first half-shaft is connected to a first universal joint 3, and one end of the second half-shaft is connected to a second universal joint 4. It also includes an oil chamber 11 located within the first half-shaft for storing oil; a piston 21 located on the second half-shaft extending into the oil chamber, its circumferential outer wall sealingly fitting with the inner wall of the oil chamber and dividing the oil chamber into a first chamber 111 and a second chamber 112. The piston moves with the axial displacement of the second half-shaft; and an oil guide pipe 5, one end of which communicates with the first chamber and the other end with the second chamber. During piston sliding, hydraulic oil from one side of the oil chamber flows out through the right pipe to the other side of the oil chamber. The flow of hydraulic oil generates damping, attenuating vibration. Simultaneously, the outer sealing ring of the piston is compressed during movement, further buffering and damping vibration using its own elasticity.

[0023] In this embodiment, as shown in the figure, a guide sleeve 113 is installed on the first half-shaft, and the guide sleeve is provided with a through hole 114 for the second half-shaft to pass through. The guide sleeve is installed on the first half-shaft and can be connected by screws or other means. It is used to cover the opening of the oil-filling cavity of the open slot and is provided with a through hole for the movement of the second half-shaft.

[0024] In this embodiment, as shown in the figure, the inner wall of the through hole is provided with a sealing ring 115 that seals with the second half-shaft, thereby increasing the sealing effect.

[0025] In this embodiment, as shown in the figure, the oil cavity includes an opening, and the guide sleeve covers the opening.

[0026] In this embodiment, as shown in the figure, a second sealing ring 211 is provided on the circumferential outer wall of the piston, and the second sealing ring is in sealing engagement with the inner wall of the oil chamber, thereby increasing the sealing effect.

[0027] In this embodiment, as shown in the figure, the inner wall of the through hole is provided with a first transmission part 117, and the second half-shaft is provided with a second transmission part 22. The first transmission part and the second transmission part cooperate to transmit torque. The second transmission part and the first transmission part can be splines and keyways, respectively, and both can transmit torque.

[0028] In this embodiment, as shown in the figure, the guide sleeve is connected to the axial outer wall of the first half-shaft via a pin 116. This makes the installation more stable.

[0029] In this embodiment, as shown in the figure, an end cap 8 is also included, which is connected to the axial outer wall of the guide sleeve. This connection can be made using screws or pins.

[0030] In this embodiment, as shown in the figure, the end cap is made of ST12 steel, and the guide sleeve is made of 406 steel. It possesses good processability and comprehensive mechanical properties.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A drive shaft with a piston-type shock absorption structure, comprising a first half-shaft (1) and a second half-shaft (2), wherein one end of the first half-shaft is connected to a first universal joint (3) and one end of the second half-shaft is connected to a second universal joint (4), characterized in that: Also includes An oil chamber (11) is located inside the first half-shaft and is used to store oil. A piston (21) is mounted on a second half-shaft extending into the oil chamber. Its circumferential outer wall is sealed to the inner wall of the oil chamber and divides the oil chamber into a first chamber (111) and a second chamber (112). The piston moves with the axial displacement of the second half-shaft. The oil guide pipe (5) has one end connected to the first chamber and the other end connected to the second chamber.

2. The drive shaft with a piston-type shock absorption structure according to claim 1, characterized in that: A guide sleeve (113) is installed on the first half-shaft, and the guide sleeve is provided with a through hole (114) for the second half-shaft to pass through.

3. A transmission shaft with a piston-type shock absorption structure according to claim 2, characterized in that: The inner wall of the through hole is provided with a sealing ring (115) that seals with the second half-shaft.

4. A transmission shaft with a piston-type shock absorption structure according to claim 3, characterized in that: The oil cavity includes an opening, and the guide sleeve covers the opening.

5. A transmission shaft with a piston-type shock absorption structure according to any one of claims 1-4, characterized in that: The piston has a second sealing ring (211) on its circumferential outer wall, and the second sealing ring is in sealing fit with the inner wall of the oil chamber.

6. A transmission shaft with a piston-type shock absorption structure according to claim 2, characterized in that: The inner wall of the through hole is provided with a first transmission part (117), and the second half shaft is provided with a second transmission part (22). The first transmission part and the second transmission part cooperate to transmit torque.

7. A transmission shaft with a piston-type shock absorption structure according to claim 2, characterized in that: The guide sleeve is connected to the axial outer wall of the first half-shaft by a pin (116).

8. A transmission shaft with a piston-type shock absorption structure according to claim 2, characterized in that: It also includes an end cap (8), which is connected to the axial outer wall of the guide sleeve.

9. A transmission shaft with a piston-type shock absorption structure according to claim 8, characterized in that: The end cap is made of ST12, and the guide sleeve is made of 406 steel.

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