CN221120754U - Hydraulic buffer - Google Patents

Abstract

The utility model discloses a hydraulic buffer, which comprises an inner cylinder and an outer cylinder, wherein one end of the inner cylinder extends into the outer cylinder, the inner side of the bottom of the inner cylinder is provided with a valve body, a valve core is arranged at the central shaft of the valve body, one side of the valve body, which surrounds the valve core, is provided with a pressure regulating spring, the bottom of the valve body is provided with a valve cover, the valve core penetrates through the valve cover, one side of the valve core, which is positioned above the valve cover, is provided with a large taper plug, and one side of the valve core, which is positioned below the valve cover, is provided with a small taper plug; the inner cylinder is equivalent to the action of a piston, the outer cylinder is filled with oil, the oil is filled in the valve body, when the external force pushes the pressure pad, the inner cylinder and the valve body are driven to move downwards, meanwhile, the oil is extruded, then the oil pushes the small taper plug to close the fluid passage of the valve body, the large taper plug is pushed open to release pressure along with the pressure rising, and the pressure in the fluid passage and the inner cylinder is regulated through the movement of the small taper plug and the large taper plug in the valve body, so that the buffering force of the buffer is adjustable.

Description

Hydraulic buffer

Technical Field

The utility model relates to the technical field of pressure cylinders, in particular to a hydraulic buffer.

Background

The hydraulic buffer mainly utilizes incompressibility and fluidity of oil; the incompressibility of the liquid in order to achieve the corresponding pressure-bearing and damping requirements; the hydraulic buffer works stably, has large absorption capacity and has wide application in industry.

The existing hydraulic buffer is fixed in structure, each mechanism can only realize one buffering effect, buffering force cannot be adjusted along with working conditions, and the buffering effect can be reduced due to oil leakage and the like in the mechanism after long-time working.

Disclosure of utility model

The present utility model is directed to a hydraulic buffer to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the hydraulic buffer comprises an inner cylinder and an outer cylinder, one end of the inner cylinder extends to the inner side of the outer cylinder, a valve body is arranged on the inner side of the bottom of the inner cylinder, a valve core is arranged at the central shaft of the valve body, a pressure regulating spring is arranged on one side of the valve body, which surrounds the valve core, of the valve body, a valve cover is arranged at the bottom of the valve body, the valve core penetrates through the valve cover, a large conical plug is arranged on one side, above the valve cover, of the valve core, and a small conical plug is arranged on one side, below the valve cover, of the valve core.

The device comprises an inner cylinder, an outer cylinder, a limiting plate, a pressing pad, a reset spring and a limiting plate, wherein the reset spring is arranged on the outer side of the inner cylinder and the outer side of the outer cylinder, the pressing pad is arranged on the top of the inner cylinder, one end of the reset spring is fixedly connected with the pressing pad, and the other end of the reset spring is fixedly connected with the limiting plate.

Wherein two O-shaped sealing rings are arranged between the outer wall of the inner cylinder and the inner wall of the outer cylinder from top to bottom.

The bottom of the inner cylinder is provided with a cylinder cover, and the valve body is fixedly connected with the cylinder cover.

The valve cover comprises a valve core, a valve cover and a valve cover, wherein a lower conical groove matched with the shape of the small conical plug is formed in the lower surface of the valve cover around one side of the valve core, and an upper conical groove matched with the shape of the large conical plug is formed in the upper surface of the valve cover around one side of the valve core.

Wherein, bottom plate is fixed mounting in outer jar bottom.

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

The inner cylinder is equivalent to the action of a piston, the outer cylinder is filled with oil, the oil is filled in the valve body, when the external force pushes the pressure pad, the inner cylinder and the valve body are driven to move downwards, meanwhile, the oil is extruded, then the oil pushes the small taper plug to close the fluid passage of the valve body, the large taper plug is pushed open to release pressure along with the pressure rising, and the pressure in the fluid passage and the inner cylinder is regulated through the movement of the small taper plug and the large taper plug in the valve body, so that the buffering force of the buffer is adjustable.

Drawings

FIG. 1 is a schematic diagram of a front view structure of the present utility model;

Fig. 2 is a partially enlarged schematic front view of the present utility model.

In the figure: 1. a pressing pad; 2. a return spring; 3. an inner cylinder; 4. a valve core; 5. a valve body; 6. a pressure regulating spring; 7. an outer cylinder; 8. a large conical plug; 9. a small cone plug; 10. a valve cover; 11. a cylinder cover; 12. a limiting plate; 13. a bottom plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-2, the present utility model provides a technical solution: the hydraulic buffer comprises an inner cylinder 3 and an outer cylinder 7, wherein one end of the inner cylinder 3 extends into the outer cylinder 7, the inner side of the bottom of the inner cylinder 3 is provided with a valve body 5, the inner cylinder 3 is equivalent to the action of a piston, the outer cylinder 7 is filled with oil, the oil is filled in the valve body 5, a valve core 4 is arranged at the central shaft of the valve body 5, one side of the valve body 5, which surrounds the valve core 4, is provided with a pressure regulating spring 6, the bottom of the valve body 5 is provided with a valve cover 10, the valve core 4 penetrates through the valve cover 10, one side of the valve core 4, which is positioned above the valve cover 10, is provided with a large taper plug 8, and one side of the valve core 4, which is positioned below the valve cover 10, is provided with a small taper plug 9; when the external force pushes the pressure pad 1, the internal cylinder 3 and the valve body 5 are driven to move downwards, meanwhile, oil is extruded, then the oil pushes the small taper plug 9 to close a fluid passage of the valve body 5, the large taper plug 8 is pushed open along with pressure rising to release pressure, and the pressure in the fluid passage and the internal cylinder 3 is regulated through the movement of the small taper plug 9 and the large taper plug 8 in the valve body 5, so that the buffering force of the buffer is adjustable.

Wherein, interior jar 3 is equipped with reset spring 2 with the outer jar 7 outside, be equipped with limiting plate 12 on the outer jar 7, interior jar 3 top is equipped with pressure pad 1, reset spring 2 one end and pressure pad 1 fixed connection, the reset spring 2 other end and limiting plate 12 fixed connection, when external force promotes pressure pad 1, drive interior jar 3 and valve body 5 and move down, pressure pad 1 produces the extrusion to reset spring 2 simultaneously, make reset spring 2 shrink, when the external force that is applyed to pressure pad 1 disappears, reset spring 2 resets and kick-backs, promote interior jar 3 and valve body 5 through reset spring 2 and upwards move, thereby make interior jar 3 reset.

Wherein, be equipped with two O type sealing washer between inner cylinder 3 outer wall and the outer cylinder 7 inner wall top-down, through increasing two O type sealing washer between inner cylinder 3 and outer cylinder 7, submit the leakproofness between inner cylinder 3 and the outer cylinder 7.

The bottom of the inner cylinder 3 is provided with a cylinder cover 11, and the valve body 5 is fixedly connected with the cylinder cover 11.

Wherein, the lower surface of valve gap 10 has seted up the lower conical groove with little taper plug 9 shape matched with around one side of case 4, the upper conical groove with big taper plug 8 shape matched with has been seted up around one side of case 4 to valve gap 10 upper surface, the through-hole has been started to valve body 5 both sides, and the through-hole cooperatees with big taper plug 8, when external force promotes pressure pad 1, it moves down to drive inner cylinder 3 and valve body 5, simultaneously produce the extrusion to fluid, then fluid promotes little taper plug 9 and stretches into in the lower conical groove, thereby close the fluid passageway of valve body 5, push away big taper plug 8 pressure release along with the pressure rising, make form dislocation between big taper plug 8 and the through-hole, then realize carrying out the pressure release in the valve body 5, through the activity of little taper plug 9 in the valve body 5 and big taper plug 8, adjust the pressure in fluid passageway and the inner cylinder 3, thereby make the buffer force of this buffer adjustable.

Wherein, the bottom of the outer cylinder 7 is fixedly provided with a bottom plate 13, and the hydraulic buffer is arranged at a position needing buffering through the bottom plate 13.

Working principle: when the buffer is used, the inner cylinder 3 corresponds to the action of a piston, the outer cylinder 7 is filled with oil, the oil is filled in the valve body 5, when the pressure pad 1 is pushed by external force, the inner cylinder 3 and the valve body 5 are driven to move downwards, meanwhile, the oil is extruded, then the oil pushes the small cone plug 9 to close a fluid passage of the valve body 5, the large cone plug 8 is pushed open along with pressure rising to release pressure, the small cone plug 9 and the large cone plug 8 in the valve body 5 move, and the pressure in the fluid passage and the inner cylinder 3 is regulated, so that the buffer force of the buffer is adjustable.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (6)

1. The hydraulic buffer comprises an inner cylinder (3) and an outer cylinder (7), and is characterized in that: the inner cylinder (3) one end extends to in the outer cylinder (7), the inboard of inner cylinder (3) bottom is equipped with valve body (5), valve body (5) center pin department is equipped with case (4), in valve body (5) centers on one side of case (4) is equipped with pressure regulating spring (6), valve body (5) bottom is equipped with valve gap (10), case (4) run through valve gap (10), case (4) are located one side of valve gap (10) top is equipped with big taper plug (8), case (4) are located one side of valve gap (10) below is equipped with little taper plug (9).

2. The hydraulic buffer of claim 1, wherein: the novel hydraulic cylinder is characterized in that a reset spring (2) is arranged outside the inner cylinder (3) and the outer cylinder (7), a limiting plate (12) is arranged on the outer cylinder (7), a pressing pad (1) is arranged at the top of the inner cylinder (3), one end of the reset spring (2) is fixedly connected with the pressing pad (1), and the other end of the reset spring (2) is fixedly connected with the limiting plate (12).

3. The hydraulic buffer of claim 1, wherein: two O-shaped sealing rings are arranged between the outer wall of the inner cylinder (3) and the inner wall of the outer cylinder (7) from top to bottom.

4. The hydraulic buffer of claim 1, wherein: the bottom of the inner cylinder (3) is provided with a cylinder cover (11), and the valve body (5) is fixedly connected with the cylinder cover (11).

5. The hydraulic buffer of claim 1, wherein: the valve cover (10) is characterized in that a lower conical groove matched with the shape of the small conical plug (9) is formed in the lower surface of the valve cover (10) around one side of the valve core (4), and an upper conical groove matched with the shape of the large conical plug (8) is formed in the upper surface of the valve cover (10) around one side of the valve core (4).

6. The hydraulic buffer of claim 1, wherein: the bottom of the outer cylinder (7) is fixedly provided with a bottom plate (13).