CN215171201U

CN215171201U - Novel anticollision formula hydraulic cylinder

Info

Publication number: CN215171201U
Application number: CN202121278783.1U
Authority: CN
Inventors: 迪戈; 阿莱西奥
Original assignee: Suzhou Saitaike Machinery Technology Co ltd
Current assignee: Suzhou Saitaike Machinery Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-14
Anticipated expiration: 2031-06-09

Abstract

The utility model is suitable for a pneumatic cylinder technical field provides a novel anticollision formula hydraulic cylinder, hydraulic cylinder includes: the hydraulic cylinder body is provided with an inner layer structure and an outer layer structure which comprise a hydraulic cavity and a buffer cavity; the hydraulic mechanism comprises a hydraulic rod and a piston, and the piston is driven to ascend or descend in a hydraulic cavity in a hydraulic transmission mode so that the hydraulic rod extends or retracts; the buffer mechanism is used for buffering and supporting the retraction process of the hydraulic rod; the buffer mechanism comprises a buffer block arranged in the buffer cavity in a sliding manner, and a one-way valve and a pressure release valve which are arranged at the bottom of the buffer cavity; in the process of returning the hydraulic cylinder, the internal gas compression process of the buffer cavity can generate buffer resistance to the movement process of the buffer block, so that the retraction process of the hydraulic mechanism is buffered and supported, the condition that the output end bears too much impact and the end of the return stroke driving hydraulic rod damages or leaks oil to the hydraulic cylinder body is avoided.

Description

Novel anticollision formula hydraulic cylinder

Technical Field

The utility model belongs to the technical field of the pneumatic cylinder, especially, relate to a novel anticollision formula hydraulic cylinder.

Background

The hydraulic oil cylinder equipment is used more and more in industrial production or life, the most practical place is that the hydraulic oil cylinder equipment is simple in structure and reliable in work, and the hydraulic oil cylinder equipment is favored by many manufacturers, the structural forms of the hydraulic oil cylinder are various, and the classification methods are also various: the motion mode can be divided into a linear reciprocating motion type and a rotary swinging type; the hydraulic pressure can be divided into a single-acting type and a double-acting type according to the action condition of the hydraulic pressure; the structure can be divided into a piston type, a plunger type, a telescopic type, a swing type and the like.

In industrial production, part of the hydraulic cylinders can be in a severe working environment, so that the hydraulic cylinders have to work under the conditions of large vibration and serious impact, and under the conditions, the return stroke action speed of the hydraulic cylinders is high, the hydraulic cylinders cannot brake in time, so that the pistons and the end parts of the piston cylinders are easy to collide, oil leakage occurs, even the hydraulic cylinders are damaged, and normal use is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a novel anticollision formula hydraulic cylinder, it is very fast to aim at solving the return stroke action speed of current pneumatic cylinder, can not in time brake and cause the tip collision of piston and piston cylinder easily, the condition of the damage of oil leak pneumatic cylinder even appears, influences normal use problem.

The embodiment of the utility model provides a realize like this, a novel anticollision formula hydraulic cylinder, hydraulic cylinder includes:

the hydraulic cylinder body is provided with an inner layer structure and an outer layer structure which comprise a hydraulic cavity and a buffer cavity;

the hydraulic mechanism comprises a hydraulic rod and a piston, and the piston is driven to ascend or descend in a hydraulic cavity in a hydraulic transmission mode so that the hydraulic rod extends or retracts; and

the buffer mechanism is used for buffering and supporting the retraction process of the hydraulic rod;

the buffer mechanism comprises a buffer block arranged in the buffer cavity in a sliding manner, and a one-way valve and a pressure release valve which are arranged at the bottom of the buffer cavity;

the buffer block is fixedly connected with the output end of the hydraulic rod through a buffer rod;

the one-way valve is used for supplementing air to the buffer cavity;

when the buffer block retracts along with the hydraulic rod, the pressure relief valve is used for releasing redundant pressurized gas in the bottom buffer cavity.

Preferably, the buffer cavity is of an annular structure, and the circle centers of the buffer cavity and the hydraulic cavity are overlapped with each other.

Preferably, the buffer block is arranged in an annular structure corresponding to the buffer cavity, and the buffer block and the buffer cavity form sliding contact seal.

Preferably, the end of the hydraulic rod is fixedly connected with the piston, and the piston forms sliding contact seal with the inner wall of the hydraulic cavity through a plurality of sealing rings distributed on the outer circumference.

Preferably, the output end of the hydraulic rod is provided with a mounting plate, and the outer circumference of the mounting plate is connected with the buffer block through a plurality of buffer rods.

Preferably, the buffer chamber is connected with the one-way valve and the pressure relief valve through two flange joints.

Preferably, the bottom of the buffer block is connected with the bottom of the buffer cavity through a buffer spring.

Compared with the prior art, the beneficial effects of the utility model are that:

the embodiment of the utility model provides a hydraulic cylinder uses in the return journey process, and the buffer beam drives the buffer block and descends in the cushion chamber in step, because the characteristic of check valve makes the valve body seal this moment, the inside space compression of cushion chamber, pressure increases gradually, after reaching the rated pressure of relief valve, the relief valve is opened, releases the unnecessary pressure in the cushion chamber; in the process, the internal gas compression process of the buffer cavity can generate buffer resistance to the movement process of the buffer block, so that the retraction process of the hydraulic mechanism is buffered and supported, the situation that the output end bears too much impact, and the end of the hydraulic rod is driven by the return stroke to damage or leak oil to the hydraulic cylinder body is avoided.

Drawings

Fig. 1 is a schematic view of a front view structure of a novel anti-collision hydraulic cylinder provided by an embodiment of the present invention;

fig. 2 is a schematic sectional view of a novel anti-collision hydraulic cylinder provided in an embodiment of the present invention;

fig. 3 is a three-dimensional structure diagram of a hydraulic rod in a novel anti-collision hydraulic oil cylinder provided by the embodiment of the utility model.

In the drawings: 1. a hydraulic cylinder body; 11. a hydraulic chamber; 12. a buffer chamber; 13. a flange joint; 2. mounting a base; 3. a hydraulic lever; 4. a piston; 41. a seal ring; 5. mounting a plate; 6. a buffer rod; 7. a buffer block; 8. a buffer spring; 9. a one-way valve; 10. and (4) releasing the valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1-3, for the utility model discloses a novel crashproof formula hydraulic cylinder's that an embodiment provided structure chart, hydraulic cylinder includes:

the hydraulic cylinder body 1 is provided with an inner layer structure and an outer layer structure which comprise a hydraulic cavity 11 and a buffer cavity 12;

a hydraulic mechanism which comprises a hydraulic rod 3 and a piston 4, wherein the piston 4 is driven to ascend or descend in a hydraulic cavity in a hydraulic transmission mode so as to extend or retract the hydraulic rod 3; and

the buffer mechanism is used for buffering and supporting the retraction process of the hydraulic rod 3;

the buffer mechanism comprises a buffer block 7 arranged in a buffer cavity 12 in a sliding manner, and a one-way valve 9 and a pressure release valve 10 which are arranged at the bottom of the buffer cavity 12;

the buffer block 7 is fixedly connected with the output end of the hydraulic rod 3 through a buffer rod 6;

the one-way valve 9 is used for supplementing air into the buffer cavity 12;

the pressure relief valve 10 is arranged to release excess pressurised gas from the bottom buffer chamber 12 when the buffer mass 7 is undergoing a retraction process with the hydraulic rod 3.

The utility model discloses an embodiment, when hydraulic cylinder used, hydraulic cylinder promoted piston 4 through outside hydraulic assembly and goes up and down in hydraulic pressure chamber 11 to drive hydraulic stem 3 and stretch out or retract, simultaneously at the in-process that stretches out or retracts, mounting panel 5 drives buffer block 7 through buffer beam 6 and goes up and down in step in buffer chamber 12.

It is necessary to state that the bottom of the buffer chamber 12 is connected with the check valve 9 and the relief valve 10 through the flange joint 13;

when the buffer rod 6 ascends along with the hydraulic rod 3, the buffer block 7 synchronously ascends in the buffer cavity 12, at the moment, the internal pressure of the buffer cavity 12 is reduced, and under the action of external pressure difference, external air supplements air into the buffer cavity 12 through the one-way valve 9;

when the buffer rod 6 descends along with the hydraulic rod 3, the buffer block 7 synchronously descends in the buffer cavity 12, at the moment, due to the characteristic of the one-way valve 9, the valve body is closed, the internal space of the buffer cavity 12 is compressed, the pressure is gradually increased, and after the rated pressure of the pressure release valve 10 is reached, the pressure release valve 10 is opened to release the redundant pressure in the buffer cavity 12;

in the process, the internal gas compression process of the buffer cavity 12 can generate buffer resistance to the movement process of the buffer block 7, so that the retraction process of the hydraulic mechanism is buffered and supported, and the situation that the output end bears too much impact and the end of the hydraulic rod 3 is driven by the return stroke to damage or leak oil to the hydraulic cylinder body 1 is avoided.

As shown in fig. 2, as a preferred embodiment of the present invention, the buffer chamber 12 is an annular structure, and the circle centers of the buffer chamber 12 and the hydraulic chamber 11 coincide with each other.

In one aspect of this embodiment, the buffer chamber 12 coincides with the hydraulic chamber 11, and the buffer chamber 12 is an annular structure and is distributed outside the hydraulic chamber 11, so as to facilitate the movement of the hydraulic mechanism to be buffered by the buffer mechanism.

As shown in fig. 2, as another preferred embodiment of the present invention, the buffer block 7 is disposed in an annular structure corresponding to the buffer chamber 12, and the buffer block 7 and the buffer chamber 12 form a sliding contact seal.

The end of the hydraulic rod 3 is fixedly connected with the piston 4, and the piston 4 forms sliding contact seal with the inner wall of the hydraulic cavity 11 through a plurality of sealing rings 41 distributed on the outer circumference.

In the one aspect of this embodiment, buffer block 7 corresponds the annular cross-section of cushion chamber 12 sets up, just buffer block 7 and piston 4 respectively with cushion chamber 12 and hydraulic pressure chamber 11 form sliding seal contact, make on the one hand hydraulic cylinder can normally stretch out and draw back, and on the other hand passes through buffer block 7 and cushion chamber 12 cooperation, effectively cushions the withdrawal process.

As shown in fig. 1, as another preferred embodiment of the present invention, the output end of the hydraulic rod 3 is provided with a mounting plate 5, and the outer circumference of the mounting plate 5 is connected with the buffer block 7 through a plurality of buffer rods 6.

In the one kind of condition of this embodiment, mounting panel 5 is installed the tip of hydraulic stem 3, and the nut through the rod end is locked fixedly, prevents to use for a long time after, and the structure appears becoming flexible, certainly, for effectively right the nut carries out spacing fixed, and the staff can the threaded connection department of nut adds the thread glue, further fixes the nut.

As shown in fig. 2, as another preferred embodiment of the present invention, the buffer chamber 12 is connected to the check valve 9 and the relief valve 10 through two flange joints 13.

In the case of this embodiment, the flange joint 13 can be connected with the check valve 9 and the pressure release valve 10 by means of screw connection, and the screw connection in this embodiment can seal the joint by adding a rubber gasket at the joint, so as to prevent gas leakage during use and influence structural stability.

As shown in fig. 2, as another preferred embodiment of the present invention, the bottom of the buffer block 7 is connected to the bottom of the buffer chamber 12 through a buffer spring 8.

In one aspect of this embodiment, a buffer spring 8 is further provided at the bottom of the buffer block 7 for assisting in buffering the buffer block 7 during retraction, thereby improving the stability of the hydraulic cylinder.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a novel crashproof formula hydraulic cylinder which characterized in that, hydraulic cylinder includes:

the one-way valve is used for supplementing air to the buffer cavity;

2. The novel anti-collision hydraulic oil cylinder according to claim 1, wherein the buffer cavity is of an annular structure, and the circle centers of the buffer cavity and the hydraulic cavity are coincident with each other.

3. A novel anti-collision hydraulic oil cylinder according to claim 1 or 2, characterized in that the buffer block is arranged in an annular structure corresponding to the buffer cavity, and the buffer block and the buffer cavity form a sliding contact seal.

4. The novel anti-collision hydraulic oil cylinder as claimed in claim 3, wherein the end of the hydraulic rod is fixedly connected with the piston, and the piston forms a sliding contact seal with the inner wall of the hydraulic cavity through a plurality of sealing rings distributed on the outer circumference.

5. The novel anti-collision hydraulic oil cylinder as claimed in claim 4, wherein a mounting plate is arranged at the output end of the hydraulic rod, and the outer circumference of the mounting plate is connected with the buffer block through a plurality of buffer rods.

6. The novel anti-collision hydraulic oil cylinder as claimed in claim 3, wherein the buffer cavity is connected with the one-way valve and the pressure release valve through two flange joints.

7. The novel anti-collision hydraulic oil cylinder as claimed in claim 6, wherein the bottom of the buffer block is connected with the bottom of the buffer cavity through a buffer spring.