CN215672980U

CN215672980U - Split type valve block structure

Info

Publication number: CN215672980U
Application number: CN202121108739.6U
Authority: CN
Inventors: 黄志文; 陈邵圳; 黄甲东
Original assignee: Xiamen Yinhua Machinery Co ltd
Current assignee: Xiamen Yinhua Machinery Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-28
Anticipated expiration: 2031-05-21

Abstract

A split type valve block structure comprises a cylinder bottom, a cylinder pipe, a valve block and an oil pipe which are matched with each other; the cylinder pipe and the cylinder bottom are welded and fixed, the valve block and the oil pipe are of a split structure, the oil pipe is welded on the cylinder pipe, a through hole is formed in the matching position of the valve block and the oil pipe, the valve block penetrates through the oil pipe through the through hole and is welded on the cylinder pipe, the top of the oil pipe is welded on the valve block, reserved grooves for welding abdications are formed in the upper end and the lower end, matched with the oil pipe, of the valve block, the oil pipe is welded on the cylinder pipe, a through hole is formed in the matching position of the valve block and the oil pipe, the valve block penetrates through the oil pipe through the through hole and is welded on the cylinder pipe, and the top of the oil pipe is welded on the valve block. The structure can greatly reduce the welding height of the valve block and solve the problem of welding deformation of the inner hole of the cylinder tube of the oil cylinder.

Description

Split type valve block structure

The technical field is as follows:

the utility model belongs to the technical field of hydraulic oil cylinders, and relates to a split type valve block structure.

Background art:

because the oil cylinder has a compact structure and insufficient axial size space, the weld bead of the valve block and the weld bead of the cylinder bottom are overlapped, as shown in fig. 1 and fig. 2, the valve block A needs to be welded after the cylinder bottom B is welded, the valve block is required to be welded in a whole circle at high welding height, the welding height is 8mm, the inner hole of the cylinder pipe C is caused to be welded and deformed, and the piston rod retracts to the tail end of the stroke, so that the piston can be clamped and blocked.

The utility model has the following contents:

aiming at the defects in the prior art, the utility model aims to provide a split type valve block structure, which changes the split welding of a valve block and an oil pipe and solves the problem of welding deformation of an inner hole of a cylinder pipe of an oil cylinder.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a split type valve block structure comprises a cylinder bottom, a cylinder pipe, a valve block and an oil pipe which are matched with each other; the cylinder pipe is welded and fixed with the cylinder bottom, the valve block and the oil pipe are of a split structure, the oil pipe is welded on the cylinder pipe, a through hole is formed in the matching position of the valve block and the oil pipe, the valve block penetrates through the oil pipe through the through hole and is welded on the cylinder pipe, and the top of the oil pipe is welded on the valve block.

Furthermore, the upper end and the lower end of the valve block matched with the oil pipe are provided with reserved grooves for welding abdications.

By adopting the technical scheme, the valve block and the oil pipe are of a split structure, the oil pipe is welded on the cylinder pipe, the matching part of the valve block and the oil pipe is provided with the through hole, the valve block penetrates through the oil pipe from the through hole and is welded on the cylinder pipe, and the top of the oil pipe is welded on the valve block. The structure can greatly reduce the welding height of the valve block and solve the problem of welding deformation of the inner hole of the cylinder tube of the oil cylinder.

Description of the drawings:

the accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a first schematic diagram of a prior art configuration of the present invention;

FIG. 2 is a schematic diagram of a prior art structure of the present invention;

FIG. 3 is a first schematic structural diagram according to an embodiment of the present invention;

fig. 4 is a second structural diagram according to an embodiment of the present invention.

The specific implementation mode is as follows:

in order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, 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 utility model and are not intended to limit the utility model.

Referring to fig. 3 and 4, the embodiment of the present invention is shown.

A split type valve block structure comprises a cylinder bottom 1, a cylinder pipe 2, a valve block 3 and an oil pipe 4 which are matched with each other; the cylinder tube 2 and the cylinder bottom 1 are welded and fixed, the valve block 3 and the oil tube 4 are of a split structure, the oil tube 4 is welded on the cylinder tube 2, a through hole 31 is formed in the matching position of the valve block 3 and the oil tube 4, the valve block 3 penetrates through the oil tube 4 through the through hole 31 and is welded on the cylinder tube 2, and the top of the oil tube 4 is welded on the valve block 3.

Furthermore, the upper end and the lower end of the valve block 3 matched with the oil pipe 4 are provided with a

preformed groove

32,33 for welding abdicating.

The utility model relates to a valve block and oil pipe split structure, wherein an oil pipe is welded on a cylinder pipe, a through hole is arranged at the matching part of the valve block and the oil pipe, the valve block penetrates through the oil pipe from the through hole and is welded on the cylinder pipe, and the top of the oil pipe is welded on the valve block. The structure can greatly reduce the welding height of the valve block and solve the problem of welding deformation of the inner hole of the cylinder tube of the oil cylinder.

The effect of the present invention is further proved by calculation, the prior art is shown in attached figures 1 and 2,

the working pressure P of the oil cylinder is 28MPa,

valve block force area S₁＝60mm×94mm＝5640mm²，

Valve block circumference C₁＝2×(60+94)mm＝308mm，

Valve block force F₁＝P*S₁，

The strength sigma of the welding wire is 650MPa,

psi is welding strength coefficient, automatic welding psi is 0.7,

according to the fillet welding strength formula

Safety factor n ═ σ ^ 0.707 ^ C₁*h₁/F₁≥5，

The obtained h is more than or equal to 8mm,

the utility model is shown in figures 3 and 4

The working pressure P of the oil cylinder is 28MPa,

the outer diameter D of the oil pipe is 9mm,

oil pipe stress area S₂＝π*D²/4，

Oil pipe perimeter C₂＝π*D，

Oil pipe stress F₂＝P*S₂，

The strength sigma of the welding wire is 650MPa,

psi is welding strength coefficient, automatic welding psi is 0.7,

according to the fillet welding strength formula

Safety factor n ═ σ ^ 0.707 ^ C₂*h₂/F₂≥5

To give h₂≥4mm

The attached figures 3 and 4 show that the stress of the valve block is equal to that of the oil pipe, the welding height of the valve block can be obtained only by 0.5mm, and the design height is 3mm, so that the deformation influence of welding on the cylinder pipe is greatly reduced.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A split type valve block structure which is characterized in that: comprises a cylinder bottom, a cylinder pipe, a valve block and an oil pipe which are mutually matched; the cylinder pipe is welded and fixed with the cylinder bottom, the valve block and the oil pipe are of a split structure, the oil pipe is welded on the cylinder pipe, a through hole is formed in the matching position of the valve block and the oil pipe, the valve block penetrates through the oil pipe through the through hole and is welded on the cylinder pipe, and the top of the oil pipe is welded on the valve block.

2. A split valve block structure as claimed in claim 1, wherein: the upper end and the lower end of the valve block matched with the oil pipe are provided with reserved grooves for welding abdications.