A hydraulic cylinder system with a buffer structure

Abstract

The utility model relates to the field of hydraulic cylinders, and in particular to a hydraulic cylinder system with a buffer structure. The technical problem to be solved by the utility model is to provide a hydraulic cylinder system that can prevent the piston from directly impacting the cylinder head, reduce the rigid impact of the piston on the cylinder head, and achieve a buffering and shock-absorbing effect. A hydraulic cylinder system with a buffer structure includes a cylinder barrel, a front cover, a rear cover, a pull rod, a pressure cover, a guide sleeve, a piston rod, a piston, a sealing ring, a support ring, a fixing sleeve, a buffer ring, a buffer plate, a buffer spring and a buffer pad. The utility model prevents the piston from directly impacting the cylinder head, reduces the rigid impact of the piston on the cylinder head, and achieves a buffering and shock-absorbing effect.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder system with a buffer structure. Background Art

[0002] Hydraulic cylinders are commonly used components in mechanical equipment. According to the structural form of common hydraulic cylinders, they can be divided into four types: piston type, plunger type, telescopic type and swing type. The piston type is the most common hydraulic cylinder, which is usually composed of a cylinder body, a piston rod and a piston. When in use, the piston rod and the piston realize reciprocating motion.

[0003] The cylinder body and piston of the hydraulic cylinder in the prior art are usually made of hard materials. When the piston runs to the bottom of the cylinder body or the cylinder head, it will strongly collide with the cylinder body, which will greatly shorten the service life of the hydraulic cylinder. At the same time, the noise generated by the collision is loud, and the vibration generated also has a certain impact on other components. Therefore, it is urgent to develop a hydraulic cylinder system that can prevent the piston from directly impacting the cylinder head, reduce the rigid impact of the piston on the cylinder head, and play a buffering and shock-absorbing effect. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art that the cylinder body and piston of the hydraulic oil cylinder are usually made of hard materials, when the piston runs to the cylinder bottom or cylinder cover of the cylinder body, it will have a strong impact with the cylinder body, which greatly shortens the service life of the hydraulic oil cylinder; at the same time, the noise generated by the impact is loud, and the vibration generated also has a certain impact on other components. The technical problem to be solved by the utility model is to provide a hydraulic oil cylinder system that can prevent the piston from directly impacting the cylinder cover, reduce the rigid impact of the piston on the cylinder cover, and play a buffering and shock absorbing effect.

[0005] The utility model is achieved by the following specific technical means:

[0006] A hydraulic oil cylinder system with a buffer structure comprises a cylinder body, a front cover and a rear cover are respectively arranged on both sides of the cylinder body, and oil holes are arranged on one side of the front cover and the rear cover; the front cover and the rear cover are fixedly connected by a pull rod; a guide sleeve is arranged on the side of the front cover away from the cylinder barrel, and the guide sleeve is fixedly installed on one side of the front cover through a pressure cover; a piston rod is arranged at the center of the cylinder barrel, and the piston rod penetrates the front cover and is slidably installed in the guide sleeve; a piston is slidably arranged in the cylinder sleeve, and the piston is fixedly connected to the piston rod through a fixing sleeve; a sealing ring is arranged on the outer diameter surface of the piston, and support rings are also arranged on both sides of the sealing ring, and the support rings are fixedly connected to the piston;

[0007] Buffer rings are fixedly arranged on both sides of the piston; buffer plates are also arranged on both sides of the piston, and buffer springs are respectively arranged on the two buffer plates close to the piston. One end of the buffer spring is fixedly connected to the piston, and the other end is fixedly connected to the buffer plate; buffer pads are also fixedly arranged on the end surfaces of the front cover and the rear cover close to the piston.

[0008] Furthermore, the buffer pad is made of a highly elastic rubber material, which has a buffering and shock absorbing effect.

[0009] Furthermore, mounting grooves for placing buffer springs are provided on both side end surfaces of the piston, which facilitates the installation and fixation of the buffer springs.

[0010] Furthermore, avoidance grooves for avoiding the buffer plate are arranged on the end surfaces on both sides of the piston, so that the buffer plate shrinks into the avoidance groove when it is impacted and squeezed.

[0011] Furthermore, the buffer ring is of a tapered sleeve structure, and the outer diameter of the end close to the piston is larger than the outer diameter of the end away from the piston, thereby achieving a buffering effect.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model prevents the piston from directly impacting the cylinder cover, reduces the rigid impact of the piston on the cylinder cover, and plays a buffering and shock absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0017] The markings in the accompanying drawings are: 1-cylinder barrel, 2-front cover, 3-rear cover, 4-pull rod, 5-pressure cover, 6-guide sleeve, 7-piston rod, 8-piston, 9-sealing ring, 10-support ring, 11-fixing sleeve, 12-buffer ring, 13-buffer plate, 14-buffer spring, 15-buffer pad. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings: Example

[0019] A hydraulic cylinder system with a buffer structure, such as Figure 1-3As shown, it includes a cylinder body, and a front cover 2 and a rear cover 3 are respectively arranged on both sides of the cylinder body, and oil holes are arranged on one side of the front cover 2 and the rear cover 3; the front cover 2 and the rear cover 3 are fixedly connected by a pull rod 4; a guide sleeve 6 is arranged on the side of the front cover 2 away from the cylinder barrel 1, and the guide sleeve 6 is fixedly installed on one side of the front cover 2 through a pressure cover 5; a piston rod 7 is arranged at the center of the cylinder barrel 1, and the piston rod 7 penetrates the front cover 2 and is slidably installed in the guide sleeve 6; a piston 8 is slidably arranged in the cylinder sleeve, and the piston 8 is fixedly connected to the piston rod 7 through a fixing sleeve 11; a sealing ring 9 is arranged on the outer diameter surface of the piston 8, and support rings 10 are also arranged on both sides of the sealing ring 9, and the support rings 10 are fixedly connected to the piston 8;

[0020] Buffer rings 12 are fixedly arranged on both sides of the piston 8; buffer plates 13 are also arranged on both sides of the piston 8, and buffer springs 14 are respectively arranged on the two buffer plates 13 close to the piston 8. One end of the buffer spring 14 is fixedly connected to the piston 8, and the other end is fixedly connected to the buffer plate 13; a buffer pad 15 is also fixedly arranged on the end surface of the front cover 2 and the rear cover 3 close to the piston 8.

[0021] Working principle:

[0022] The hydraulic cylinder of the utility model is installed on the hydraulic equipment. When in use, oil enters the oil hole on the rear cover 3 of the hydraulic cylinder, and the high-pressure oil enters the left side of the piston 8 in the cylinder body. Under the action of the high-pressure oil, the piston 8 moves to the right, and at the same time, the oil on the right side of the piston 8 is discharged from the oil port of the front cover 2. When the piston 8 moves to the right, it drives the piston rod 7 to move to the right together, so that the piston rod 7 extends out of the hydraulic cylinder to complete the preset working task.

[0023] When the piston 8 moves to the rightmost side of the cylinder 1 and contacts the left end face of the front cover 2, the buffer plate 13 arranged on the right side of the piston 8 first contacts the buffer pad 15 arranged on the left end face of the front cover 2, and the buffer pad 15 is made of high elastic rubber material; it plays a buffering and shock absorbing effect, reduces the impact force of the buffer plate 13 on the front cover 2, and after the buffer plate 13 contacts the buffer pad 15, the buffer plate 13 is squeezed by the piston 8 to the right, so that the buffer plate 13 squeezes the buffer spring 14, so that the buffer spring 14 buffers the piston 8, prevents the right end face of the piston 8 from directly impacting the left end face of the front cover 2, and reduces the rigid impact of the piston 8 on the front cover 2; similarly, when the piston 8 moves to the left, the piston 8 is buffered and shock-absorbed by the buffer plate 13 and the buffer spring 14 arranged on the left side of the piston 8 and the buffer pad 15 arranged on the right side of the rear cover 3.

[0024] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A hydraulic cylinder system with a buffer structure, comprising a cylinder body, a front cover (2) and a rear cover (3) are respectively arranged on both sides of the cylinder body, and oil holes are arranged on one side of the front cover (2) and the rear cover (3); the front cover (2) and the rear cover (3) are fixedly connected via a pull rod (4); a guide sleeve (6) is arranged on the side of the front cover (2) away from the cylinder barrel (1), and the guide sleeve (6) is fixedly installed on one side of the front cover (2) via a pressure cover (5); a piston rod (7) is arranged at the center of the cylinder barrel (1), and the piston rod (7) passes through the front cover (2) and is slidably installed in the guide sleeve (6); a piston (8) is slidably arranged in the cylinder sleeve, and the piston (8) is fixedly connected to the piston rod (7) via a fixing sleeve (11); a sealing ring (9) is arranged on the outer diameter surface of the piston (8), and support rings (10) are also arranged on both sides of the sealing ring (9), and the support rings (10) are fixedly connected to the piston (8); It is characterized in that Buffer rings (12) are fixedly arranged on both sides of the piston (8); buffer plates (13) are also fixedly arranged on both sides of the piston (8); buffer springs (14) are respectively arranged on the sides of the two buffer plates (13) close to the piston (8); one end of the buffer spring (14) is fixedly connected to the piston (8), and the other end is fixedly connected to the buffer plate (13); and buffer pads (15) are also fixedly arranged on the end surfaces of the front cover (2) and the rear cover (3) close to the piston (8).

2. A hydraulic cylinder system with a buffer structure according to claim 1, characterized in that: The buffer pad (15) is made of a highly elastic rubber material.

3. The hydraulic cylinder system with a buffer structure according to claim 1, characterized in that: Mounting grooves for accommodating buffer springs (14) are provided on both side end surfaces of the piston (8).

4. The hydraulic cylinder system with a buffer structure according to claim 1, characterized in that: Avoidance grooves for avoiding the buffer plate (13) are provided on both side end surfaces of the piston (8).

5. The hydraulic cylinder system with a buffer structure according to claim 1, characterized in that: The buffer ring (12) is of a tapered sleeve structure, and the outer diameter of the end close to the piston (8) is larger than the outer diameter of the end away from the piston (8).

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