CN211059112U

CN211059112U - Self-resetting buffer hydraulic cylinder

Info

Publication number: CN211059112U
Application number: CN201921639933.XU
Authority: CN
Inventors: 刘莉华
Original assignee: Yangzhou Zhuorei Hydraulic Equipment Technology Co ltd
Current assignee: Yangzhou Zhuorei Hydraulic Equipment Technology Co ltd
Priority date: 2019-09-28
Filing date: 2019-09-28
Publication date: 2020-07-21
Anticipated expiration: 2029-09-28

Abstract

The utility model relates to a hydraulic equipment technical field, concretely relates to from buffer hydraulic cylinder that restores to throne. Including the cylinder, base and end cover are installed respectively to the cylinder both ends, are equipped with the piston rod in the cylinder, and the cover is equipped with the piston on the piston rod, and piston and cylinder sealing fit, piston divide into first cavity and second cavity with the cylinder, the second cavity with through check valve and first cavity pipe connection, the check valve both ends are parallelly connected to have flow control valve, are equipped with the cushion chamber on the base, are fixed with buffer spring in the cushion chamber, buffer spring free end and the terminal fixed connection of piston rod. The buffer spring is used for buffering the movement of the piston, so that impact noise in operation is reduced, equipment failure caused by mechanical impact is avoided, the reliability of the equipment is improved, and the service life of the equipment is prolonged; the self-resetting of the piston rod is realized through the rebounding of the buffer spring, the flow of the oil circuit from the first cavity to the second cavity can be adjusted through adjusting the flow control valve, and the resetting speed is adjusted.

Description

Self-resetting buffer hydraulic cylinder

Technical Field

The utility model relates to a hydraulic equipment technical field, concretely relates to from buffer hydraulic cylinder that restores to throne.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.

In the prior art, when the hydraulic cylinder moves to a stroke terminal at a high speed, violent mechanical collision often occurs, the cylinder body is broken seriously, the mechanical impact is generated, the working performance of mechanical equipment is influenced, other elements of the hydraulic cylinder and a hydraulic system are damaged, great danger is realized, and the service life of the equipment is greatly shortened in long-time work.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem in the above-mentioned background art, the utility model provides a from buffer hydraulic cylinder that restores to throne.

The utility model discloses a realize through following technical scheme:

the utility model provides a from buffer hydraulic cylinder that restores to throne, includes the cylinder, base and end cover are installed respectively to the cylinder both ends, be equipped with the piston rod in the cylinder, the cover is equipped with the piston on the piston rod, the piston with the sealed cooperation of cylinder, the piston will the cylinder divide into first cavity and second cavity, the second cavity with through the check valve with first cavity pipe connection, the check valve both ends are parallelly connected to have flow control valve, be equipped with the cushion chamber on the base, the cushion chamber internal fixation has buffer spring, the buffer spring free end with the terminal fixed connection of piston rod.

And two ends of the bottom of the cylinder barrel are respectively connected with a supplementary oil inlet duct.

The utility model has the advantages that:

1. the buffer spring is used for buffering the movement of the piston, so that the running speed of the piston is reduced before the piston runs to a dead point, the buffer effect is good, the impact noise in running is reduced, the equipment failure caused by mechanical impact is avoided, the reliability of the equipment is improved, and the service life of the equipment is prolonged;

2. the rebound of the buffer spring is used for realizing the self-resetting of the piston rod, the flow rate of hydraulic oil from the first cavity to the second cavity can be adjusted by adjusting the flow control valve, and the resetting speed can be adjusted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the cylinder, 2, base, 3, end cover, 4, piston rod, 5, piston, 6, first cavity, 7, second cavity, 8, check valve, 9, flow control valve, 10, cushion chamber, 11, buffer spring, 12, supplementary oil feed oil duct.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

referring to fig. 1, a from buffer hydraulic cylinder that restores to throne, including cylinder 1, base 2 and end cover 3 are installed respectively to 1 both ends of cylinder, be equipped with piston rod 4 in the cylinder 1, the cover is equipped with piston 5 on the piston rod 4, piston 5 and the sealed cooperation of cylinder 1, piston 5 divide into first cavity 6 and second cavity 7 with cylinder 1, second cavity 7 with through

check valve

8 and 6 pipe connection of first cavity, 8 both ends of check valve are parallelly connected to have flow control valve 9, be equipped with cushion chamber 10 on the base 2, the cushion chamber 10 internal fixation has

buffer spring

11, 11 free ends of buffer spring and the terminal fixed connection of piston rod 4.

Two ends of the bottom of the cylinder barrel 1 are respectively connected with a supplementary oil inlet duct 12.

When the piston rod receives external force to remove to the base direction, the piston removes towards the base direction, first cavity volume increase, the second cavity volume reduces, hydraulic oil in the second cavity passes through the check valve and flows to first cavity, before the piston rod moves to the dead point, slow down under the effect of spring, until moving to the dead point, then rebound under the effect of spring, hydraulic oil in the first cavity passes through flow control valve and flows in to the second cavity, first cavity volume reduces, the second cavity volume increases, can pass through regulation flow control valve during, adjust the velocity of flow of first cavity to the hydraulic oil of second cavity, thereby adjust the speed of resetting, final piston rod returns initial position, realize from resetting.

Claims

1. The utility model provides a from buffer hydraulic cylinder that restores to throne, includes cylinder (1), base (2) and end cover (3) are installed respectively to cylinder (1) both ends, be equipped with piston rod (4), its characterized in that in cylinder (1): the piston rod (4) is sleeved with a piston (5), the piston (5) is in sealing fit with the cylinder barrel (1), the piston (5) is used for dividing the cylinder barrel (1) into a first cavity (6) and a second cavity (7), the second cavity (7) is connected with a pipeline of the first cavity (6) through a check valve (8), two ends of the check valve (8) are connected with a flow control valve (9) in parallel, a buffer cavity (10) is arranged on the base (2), a buffer spring (11) is fixed in the buffer cavity (10), and the free end of the buffer spring (11) is fixedly connected with the tail end of the piston rod (4).

2. The self-resetting cushion cylinder of claim 1, wherein: and two ends of the bottom of the cylinder barrel (1) are respectively connected with a supplementary oil inlet duct (12).