CN211474550U

CN211474550U - Hydraulic jaw

Info

Publication number: CN211474550U
Application number: CN201922033363.6U
Authority: CN
Inventors: 陆国良
Original assignee: Shaoxing Rona Measurement And Control Technology Co ltd
Current assignee: Shaoxing Rona Measurement And Control Technology Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-09-11
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a hydraulic pressure is kept silent, its technical essential is: the hydraulic cylinder comprises a jaw, a hydraulic cylinder, an oil tank and a pressurizing device, wherein the pressurizing device comprises a gas-liquid pressurizing cylinder, the gas-liquid pressurizing cylinder is connected with the hydraulic cylinder through an oil path pipe, the gas-liquid pressurizing cylinder comprises a cylinder body, a piston and an optical axis, the cylinder body comprises a cylinder wall arranged in the middle and cylinder walls which are symmetrically arranged and are integrally formed with the cylinder wall, sealing oil rings are arranged between the cylinder wall and the two cylinder walls, the piston is arranged in the cylinder wall, the optical axis is horizontally arranged in the cylinder body, two ends of the optical axis are respectively inserted into the cylinder walls on two sides of the cylinder wall, an air inlet and an air outlet are arranged on the cylinder wall, two cylinder walls are respectively provided with oil outlets, and the oil outlets on the two sides of the cylinder. The utility model discloses a silence operation is realized to the gas-liquid pressure cylinder, changes into simultaneously novel gas-liquid pressure cylinder to realize that the flexible of jar can be realized to a gas-liquid pressure cylinder.

Description

Hydraulic jaw

Technical Field

The utility model relates to an anchor clamps field specifically is a novel hydraulic pressure of material strength testing machine is kept silent.

Background

At present, in a material strength test, a hydraulic jaw is widely used as a clamp for testing materials, a traditional hydraulic jaw comprises a clamp, an oil pump, an oil cylinder and a reversing valve, a servo valve is required to be added between the oil pump and a phantom valve in order to ensure that the hydraulic jaw obtains required oil pressure, the oil pump in the pressurizing mode usually adopts the oil pump with the rotation number of 1440r/min in order to provide enough oil pressure for a main oil cylinder of the testing machine, the hydraulic jaw is supplied with pressure by adjusting proper oil pressure through the servo valve, and the oil pump with high rotation speed can generate larger noise in the working process to cause discomfort of workers.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides a hydraulic pressure is kept silent.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the hydraulic jaw comprises a jaw body, a hydraulic cylinder, an oil tank and a pressurizing device, wherein the pressurizing device comprises a gas-liquid pressurizing cylinder, and the gas-liquid pressurizing cylinder is connected with the hydraulic cylinder through an oil path pipe.

Preferably, the gas-liquid pressure cylinder comprises a cylinder body, a piston and an optical axis, the cylinder body comprises a cylinder wall arranged in the middle and oil cylinder walls which are symmetrically arranged and integrated with the cylinder wall, sealing oil rings are arranged between the cylinder wall and the two oil cylinder walls, the piston is arranged in the cylinder wall, the optical axis is horizontally arranged in the cylinder body, two ends of the optical axis are respectively inserted into the oil cylinder walls on two sides of the cylinder wall, an air inlet and an air outlet are arranged on the cylinder wall, oil outlets are arranged on the two oil cylinder walls, and the oil outlets on the two oil cylinder walls are respectively connected with the hydraulic cylinder.

In conclusion, through the technical scheme, the utility model discloses in through connect the gas-liquid pressure cylinder on the pneumatic cylinder of keeping silent, change the piston position through cylinder wall pressurization to change the hydraulic oil volume change that the position of optical axis in the cylinder wall realized in the cylinder wall, at the release of whole pneumatic cylinder and pressurization in-process, all accomplish through the cylinder, realized the silence operation of hydraulic pressure work of keeping silent.

Preferably, oil inlets are formed in the walls of the two oil cylinders and are connected with the oil tank through oil path pipes.

Preferably, a check valve is arranged at the oil inlet.

Through the technical scheme, the oil inlet is formed in the wall of the oil cylinder, the check valve is mounted, hydraulic oil can be supplemented into the wall of the oil cylinder at any time, and the problem of pressure relief caused by reverse flow of hydraulic oil is solved.

Preferably, the jaw comprises a clamp seat, a cross beam and clamping pieces which are symmetrically arranged, the hydraulic cylinder is fixed in the clamp seat, the lower end of the clamp seat is provided with a limiting groove which is inclined from two sides, the clamping pieces and the cross beam are arranged in the limiting groove, the cross beam is fixed at the lower end of a piston wall of the hydraulic cylinder, and the clamping pieces are arranged on the cross beam.

Preferably, the beam is provided with a horizontal sliding groove, the clamping piece is fixedly provided with an installation block, and the installation block is installed in the horizontal sliding groove and is in sliding fit with the horizontal sliding groove.

Preferably, limiting plates are arranged on the front side and the rear side of the clamp seat, inclined sliding grooves are formed in the two sides of the limiting plates towards one side of the limiting groove, two ends of the clamping piece are respectively inserted into the inclined sliding grooves, and the inclined sliding grooves are matched with the clamping piece in a sliding mode.

Through above-mentioned technical scheme, through the motion of pneumatic cylinder piston wall, can promote the removal of crossbeam, and then make the clamping piece slide in the spacing groove, slide on the spacing groove lateral wall that the slope set up through the clamping piece, realize tightening up and loosening of clamping piece to injecing the position of clamping piece through horizontal spout and slope spout, guarantee that the clamping piece slides in the within range of injecing, thereby realize pressing from both sides tight action.

Drawings

Fig. 1 is a schematic view of a hydraulic jaw structure of the present invention.

Reference numerals: 1. a jaw; 11. a clamp base; 12. a limiting groove; 13. a cross beam; 14. a clip; 2. a hydraulic cylinder; 3. a gas-liquid pressure cylinder; 31. a cylinder body; 311. a cylinder wall; 312. a cylinder wall; 32. a piston; 33. an optical axis; 4. an oil outlet; 5. an oil inlet; 6. a one-way valve; 7. a horizontal chute; 8. mounting blocks; 9. and a limiting plate.

Detailed Description

A hydraulic jaw according to the invention is further illustrated by means of figure 1.

A hydraulic jaw comprises a jaw 1, a hydraulic cylinder 2, an oil tank and a pressurizing device, wherein the pressurizing device comprises a gas-liquid pressurizing cylinder 3, the gas-liquid pressurizing cylinder 3 is connected with the hydraulic cylinder 2 through an oil pipeline, the gas-liquid pressurizing cylinder 3 comprises a cylinder body 31, a piston 32 and an optical axis 33, the cylinder body 31 comprises a cylinder wall 311 arranged in the middle and cylinder walls 312 symmetrically arranged and integrally formed with the cylinder wall 311, sealing oil rings are arranged between the cylinder wall 311 and the two cylinder walls 312, the piston 32 is arranged in the cylinder wall 311, the piston 32 can slide left and right in the cylinder wall 311, the optical axis 33 is horizontally arranged in the cylinder body 31, two ends of the optical axis 33 are respectively inserted into the cylinder walls 312 on two sides of the cylinder wall 311, the cylinder wall 311 is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively arranged on two sides of the piston 32, the two cylinder walls 312 are both provided with oil outlets 4, oil outlets 4 on the two side cylinder walls 312 are respectively connected with the hydraulic cylinder 2, oil inlets 5 are respectively arranged on the two cylinder walls 312, the oil inlets 5 are respectively connected with an oil tank through oil path pipes, a one-way valve 6 is arranged at the position of each oil inlet 5, an oil outlet C is connected with an oil inlet A of the cylinder, an oil outlet D is connected with an oil inlet B of the cylinder, an air inlet H, G of the cylinder wall is respectively connected with an air pump, and an oil inlet E, F of the cylinder wall is respectively connected with the oil tank.

Of course, the gas-liquid pressure cylinder 3 can also make two other common types of one-way gas-liquid pressure cylinders 3 respectively connected with the upper and lower oil inlets 5 of the hydraulic cylinder 2.

Further set up as, 1 of keeping silent is including the clamping piece 14 that pincers seat 11, crossbeam 13 and symmetry set up, and pneumatic cylinder 2 is fixed in pincers seat 11, pincers seat 11 lower extreme is provided with the spacing groove 12 of both sides slope, clamping piece 14 and crossbeam 13 are installed in spacing groove 12, crossbeam 13 is fixed at the 32 wall lower extremes of piston of pneumatic cylinder 2, clamping piece 14 is installed on crossbeam 13 be provided with horizontal spout 7 on the crossbeam 13, fixed by installation piece 8 on the clamping piece 14, installation piece 8 is installed in horizontal spout 7, with the cooperation of sliding of horizontal spout 7, both sides are provided with limiting plate 9 around pincers seat 11, both sides limiting plate 9 is provided with the slope spout towards one side of spacing groove 12, the slope spout is inserted respectively in the both ends of clamping piece 14, the cooperation of sliding of slope spout and clamping piece 14.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure is kept silent, includes keep silent, pneumatic cylinder, oil tank and pressure device, its characterized in that: the pressurizing device comprises a gas-liquid pressurizing cylinder, and the gas-liquid pressurizing cylinder is connected with the hydraulic cylinder through an oil path pipe.

2. The hydraulic jaw of claim 1, wherein: the gas-liquid pressure cylinder comprises a cylinder body, a piston and an optical axis, wherein the cylinder body comprises a cylinder wall arranged in the middle and oil cylinder walls which are symmetrically arranged and are integrally formed with the cylinder wall, sealing oil rings are arranged between the cylinder wall and the two oil cylinder walls, the piston is arranged in the cylinder wall, the optical axis is horizontally arranged in the cylinder body, two ends of the optical axis are respectively inserted into the oil cylinder walls on two sides of the cylinder wall, an air inlet and an air outlet are arranged on the cylinder wall, oil outlets are arranged on the two oil cylinder walls, and the oil outlets on the two oil cylinder walls are respectively connected with a hydraulic cylinder.

3. A hydraulic jaw according to claim 2 wherein: and oil inlets are formed in the walls of the two oil cylinders and are connected with the oil tank through oil path pipes.

4. A hydraulic jaw according to claim 3 wherein: and a one-way valve is arranged at the oil inlet.

5. The hydraulic jaw of claim 1, wherein: the clamp comprises a clamp seat, a cross beam and clamping pieces symmetrically arranged, a hydraulic cylinder is fixed in the clamp seat, the lower end of the clamp seat is provided with a limiting groove inclined from two sides, the clamping pieces and the cross beam are installed in the limiting groove, the cross beam is fixed at the lower end of a piston wall of the hydraulic cylinder, and the clamping pieces are installed on the cross beam.

6. The hydraulic jaw of claim 5, wherein: the beam is provided with a horizontal sliding groove, the clamping piece is fixedly provided with an installation block, and the installation block is installed in the horizontal sliding groove and is in sliding fit with the horizontal sliding groove.

7. The hydraulic jaw of claim 6, wherein: limiting plates are arranged on the front side and the rear side of the clamp seat, inclined sliding grooves are formed in the two sides of the limiting plates towards one side of the limiting groove, two ends of the clamping piece are respectively inserted into the inclined sliding grooves, and the inclined sliding grooves are matched with the clamping piece in a sliding mode.