CN210769639U

CN210769639U - Hydraulic servo oil cylinder with buffering function

Info

Publication number: CN210769639U
Application number: CN201921909600.4U
Authority: CN
Inventors: 梁志涛; 钱志良; 雷鸣
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-16
Anticipated expiration: 2029-11-07

Abstract

The utility model relates to a hydraulic servo oil cylinder with a buffer function, which comprises a cylinder body, wherein one side of the cylinder body is provided with an oil pipe I in a penetrating way, an oil pipe II and an oil pipe III penetrate through the other side of the cylinder body, the oil pipe III is positioned on one side of the oil pipe II far away from the oil pipe I, one end of the oil pipe III, which is far away from the cylinder body, is fixedly connected with a one-way throttle valve, one end of the cylinder body, which is far away from the oil pipe I, is provided with a guide sleeve, a cylinder cover is fixedly arranged at one end of the guide sleeve far away from the cylinder body, the cylinder cover is fixedly connected with the cylinder body through a plurality of fastening screws, be equipped with oil circuit pipeline and pole chamber in the cylinder body, the pole intracavity is equipped with the piston rod, fixed cover is equipped with the piston on the piston rod, the utility model discloses simple structure, convenient to use can effectually play the effect of buffering, protects hydraulic servo cylinder, prolongs hydraulic servo cylinder's life.

Description

Hydraulic servo oil cylinder with buffering function

Technical Field

The utility model relates to a hydraulic servo cylinder with buffer function belongs to hydraulic equipment technical field.

Background

Hydraulic rams are an important component in construction machines. When the hydraulic cylinder drags heavy external loads to do reciprocating motion, if no proper buffer device is arranged, when the end face of the piston runs to the tail end of the stroke, severe pressure, impact and vibration often occur, so that a hydraulic system runs unstably, and the hydraulic cylinder is extremely easy to damage. Therefore, a reasonable buffer device needs to be arranged at the piston part to avoid the damage of the impact pressure to the hydraulic cylinder.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, provide a hydraulic servo cylinder with buffer function, the utility model discloses a through having set up oil pipe one, oil pipe two and oil pipe three, when using, add hydraulic oil to the pole intracavity through oil pipe one, thereby promote the piston to move, the hydraulic oil of the piston opposite side is extruded and then is discharged through oil pipe two, when the piston moves to block up oil pipe two, can make the displacement velocity of piston reduce step by step, thereby play the effect of buffering, through having set up restricted aperture and restricted branch hole, when injecting hydraulic oil through oil pipe three-dimensional pole intracavity, will promote the piston to move backward, thereby drive the piston rod to move, the hydraulic oil of the piston opposite side is extruded and then is discharged through oil pipe one at this moment, when the piston rod inserts the oil circuit pipeline, hydraulic oil can't directly enter oil pipe one through the oil circuit pipeline, can only get into in the current-limiting hole through the current-limiting hole to get into oil pipe one, thereby make the translation rate of piston reduce gradually, thereby play the effect of buffering, the utility model discloses simple structure, convenient to use can effectually play the effect of buffering, protects hydraulic servo cylinder, prolongs hydraulic servo cylinder's life, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a hydraulic servo cylinder with buffer function, includes the cylinder body, one side of cylinder body is run through and is equipped with oil pipe one, the opposite side of cylinder body runs through and is equipped with oil pipe two and oil pipe three, oil pipe three is located oil pipe two is kept away from one side of oil pipe one, oil pipe three is kept away from the one-way choke valve of one end fixedly connected with of cylinder body, the cylinder body is kept away from the one end of oil pipe one is equipped with the uide bushing, the uide bushing is kept away from the fixed cylinder cap that is equipped with of one end of cylinder body, the cylinder cap with the cylinder body passes through a plurality of fastening screw fixed connection, be equipped with oil circuit pipeline and pole chamber in the cylinder body, the pole intracavity is equipped with the piston rod, fixed cover is equipped with the piston on the piston rod, the piston rod.

Further, one end of the first oil pipe is located outside the cylinder body, and the other end of the first oil pipe is communicated with the oil pipeline.

Further, the oil line pipeline is located on one side, close to the first oil pipe, of the cylinder body, and the other end of the oil line pipeline is communicated with one end of the rod cavity.

Further, the outer wall of the piston is abutted against the inner wall of the rod cavity, and a sealing ring is fixedly arranged on the outer wall of the piston.

Furthermore, the end of the piston rod located in the oil pipeline is provided with a flow limiting hole, the end of the piston rod located in the oil pipeline is annularly provided with a plurality of flow limiting holes in a penetrating mode, and the ends, far away from the oil pipeline, of the flow limiting holes are communicated with the flow limiting hole.

Further, the outer wall of the guide sleeve is abutted to the inner wall of the rod cavity, and a sealing ring and a dust ring are fixedly arranged on the outer wall of the guide sleeve.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up oil pipe one, oil pipe two and oil pipe three, when using, add hydraulic oil to the pole intracavity through oil pipe one, thereby promote the piston to move, the hydraulic oil of piston opposite side is extruded and then is discharged through oil pipe two, when the piston moves to block up oil pipe two, then can make the displacement velocity of piston reduce gradually, thereby play the effect of buffering;

2. the utility model discloses a set up restricted aperture and current-limiting branch hole, when injecting hydraulic oil through oil pipe three-dimensional pole intracavity, will promote the piston reverse movement, thereby drive the piston rod and remove, the hydraulic oil of piston opposite side is extruded at this moment and then is discharged through oil pipe one, when the piston rod inserts the oil circuit pipeline, hydraulic oil can't directly get into oil pipe one through the oil circuit pipeline, can only get into the current-limiting hole through the current-limiting hole, thereby get into oil pipe one, thereby make the displacement velocity of piston reduce gradually, thereby play the effect of buffering;

3. the utility model discloses simple structure, convenient to use can effectually play the effect of buffering, protects hydraulic servo cylinder, prolongs hydraulic servo cylinder's life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a front view of the present invention.

Fig. 2 is a partial enlarged view of the present invention a.

Fig. 3 is a schematic structural view of the flow-limiting hole and the flow-limiting branch hole of the present invention.

Reference numbers in the figures: 1. a cylinder body; 2. an oil pipe I; 3. an oil pipe II; 4. an oil pipe III; 5. a one-way throttle valve; 6. a guide sleeve; 7. a cylinder cover; 8. fastening screws; 9. an oil line conduit; 10. a rod cavity; 11. a piston rod; 12. a piston; 13. an ear ring; 14. a flow restriction orifice; 15. limiting the flow hole.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-3, a hydraulic servo cylinder with a buffering function includes a cylinder body 1, one side of the cylinder body 1 is provided with a first oil pipe 2 in a penetrating manner, the other side of the cylinder body 1 is provided with a second oil pipe 3 and a third oil pipe 4 in a penetrating manner, the third oil pipe 4 is located on one side of the second oil pipe 3 away from the first oil pipe 2, the third oil pipe 4 is provided with a one-way throttle valve 5 fixedly connected with one end of the cylinder body 1 away from the first oil pipe 2, one end of the cylinder body 1 away from the first oil pipe 2 is provided with a guide sleeve 6, one end of the guide sleeve 6 away from the cylinder body 1 is fixedly provided with a cylinder cover 7, the cylinder cover 7 is fixedly connected with the cylinder body 1 through a plurality of fastening screws 8, an oil line 9 and a rod cavity 10 are arranged in the cylinder body 1, a piston rod 11 is arranged in the rod.

As shown in fig. 1, one end of an oil pipe 2 of the present embodiment is located outside a cylinder body 1, the other end of the oil pipe 2 is communicated with an oil pipeline 9, the oil pipeline 9 is located on one side of the cylinder body close to the oil pipe 2, the other end of the oil pipeline 9 is communicated with one end of a rod cavity 10, and hydraulic oil is placed into the oil pipeline 9 through the oil pipe 2, so as to enter the rod cavity 10.

As shown in fig. 1, the outer wall of the piston 12 of this embodiment abuts against the inner wall of the rod cavity 10, and the outer wall of the piston 12 is fixedly provided with a sealing ring, so that hydraulic oil can be effectively prevented from entering the rod cavity 10 on the other side of the piston through a gap between the piston 12 and the rod cavity 10 by the sealing ring.

As shown in fig. 1, a flow-limiting hole 14 is formed in one end of the piston rod 11 located in the oil conduit 9 in the embodiment, a plurality of flow-limiting holes 15 are annularly formed in the piston rod 11 located in the oil conduit 9 in a penetrating manner, one ends of the flow-limiting holes 15 far away from the oil conduit 9 are both communicated with the flow-limiting hole 14, and hydraulic oil can flow into the flow-limiting holes 15 through the flow-limiting holes 14 and then enter the rod cavity 10 through the flow-limiting holes 15.

As shown in fig. 1, the outer wall of the guide sleeve 6 of the present embodiment abuts against the inner wall of the rod cavity 10, and a sealing ring and a dust ring are fixedly disposed on the outer wall of the guide sleeve 6.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The utility model discloses the theory of operation: when the hydraulic oil injection device is used, hydraulic oil is added into the rod cavity 10 through the oil pipe I2, so that the piston 12 is pushed to move, the piston rod 11 is driven to move, the hydraulic oil on the other side of the piston 12 is extruded and discharged through the oil pipe II 3, when the piston 12 moves to block the oil pipe II 3, the moving speed of the piston 12 is gradually reduced due to the resistance of the hydraulic oil, when the piston rod 11 needs to move reversely, hydraulic oil is injected into the rod cavity 10 through the oil pipe III 4, the hydraulic oil pushes the piston 12 to move reversely, so that the piston rod 11 is driven to move, at the moment, the hydraulic oil on the other side of the piston 12 is extruded and discharged through the oil pipe I2, when one end of the piston rod 11 is inserted into the oil pipe 9, the hydraulic oil cannot directly enter the oil pipe I2 through the oil pipe 9 and only enters the flow limiting hole 14 through the flow limiting hole 15, so that the hydraulic, the utility model discloses simple structure, convenient to use can effectually play the effect of buffering, protects hydraulic servo cylinder, prolongs hydraulic servo cylinder's life.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic servo cylinder with buffer function, includes cylinder body (1), its characterized in that: one side of the cylinder body (1) is provided with a first oil pipe (2) in a penetrating manner, the other side of the cylinder body (1) is provided with a second oil pipe (3) and a third oil pipe (4) in a penetrating manner, the third oil pipe (4) is positioned at one side of the second oil pipe (3) far away from the first oil pipe (2), the third oil pipe (4) is far away from one end of the cylinder body (1) and is fixedly connected with a one-way throttle valve (5), one end of the cylinder body (1) far away from the first oil pipe (2) is provided with a guide sleeve (6), one end of the guide sleeve (6) far away from the cylinder body (1) is fixedly provided with a cylinder cover (7), the cylinder cover (7) is fixedly connected with the cylinder body (1) through a plurality of fastening screws (8), an oil pipeline (9) and a rod cavity (10) are arranged in the cylinder body (1), a piston rod (11), the piston rod (11) is far away from one end of the oil pipe I (2) penetrates through the guide sleeve (6) and the cylinder cover (7) extend to the outer portion of the cylinder body (1) and the lug ring (13) is fixedly connected with the cylinder cover.

2. The hydraulic servo cylinder with the buffering function according to claim 1, wherein: one end of the first oil pipe (2) is located outside the cylinder body (1), and the other end of the first oil pipe (2) is communicated with the oil pipeline (9).

3. The hydraulic servo cylinder with the buffering function according to claim 1, wherein: the oil line pipeline (9) is located on one side, close to the oil pipe I (2), of the cylinder body (1), and the other end of the oil line pipeline (9) is communicated with one end of the rod cavity (10).

4. The hydraulic servo cylinder with the buffering function according to claim 1, wherein: the outer wall of the piston (12) is abutted against the inner wall of the rod cavity (10), and a sealing ring is fixedly arranged on the outer wall of the piston (12).

5. The hydraulic servo cylinder with the buffering function according to claim 1, wherein: be located in oil pipeline (9) restricted orifice (14) have been seted up to the one end of piston rod (11), be located in oil pipeline (9) ring-shaped run through on piston rod (11) has seted up a plurality of restricted flow holes (15), restricted flow hole (15) are kept away from the one end of oil pipeline (9) all with restricted orifice (14) communicate with each other.

6. The hydraulic servo cylinder with the buffering function according to claim 1, wherein: the outer wall of uide bushing (6) with the inner wall of pole chamber (10) is contradicted, just fixed sealing washer and the dust ring of being equipped with on the outer wall of uide bushing (6).