CN215568134U

CN215568134U - Hydraulic breaking hammer reversing valve structure

Info

Publication number: CN215568134U
Application number: CN202121024489.8U
Authority: CN
Inventors: 陈伟豪; 陈伟力
Original assignee: Zhejiang Lingde Heavy Industry Co ltd
Current assignee: Zhejiang Lingde Heavy Industry Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2022-01-18
Anticipated expiration: 2031-05-13

Abstract

The utility model provides a reversing valve structure of a hydraulic breaking hammer, and belongs to the technical field of breaking hammers. The hydraulic breaking hammer solves the problems that an existing breaking hammer reversing valve is low in oil pressure release capacity and can affect the using effect and the service life of the hydraulic breaking hammer after being used for a long time. This hydraulic breaking hammer switching-over valve structure, this switching-over valve structure include the switching-over valve body with set up the case in the switching-over valve body, but the case is equipped with axial displacement's valve barrel outward, and circumference interval is equipped with a plurality of inlet port on the case outer wall, and the pressure-equalizing hole unit of a plurality of groups has been seted up on the outer wall of case and between being located this case outer end and the inlet port. The oil pressure relief device has the advantages that oil pressure relief is carried out on the interior of the valve core of the reversing valve, oil inlet pressure is relieved, oil pressure in the valve core is stable, the using effect of the breaking hammer is improved, and the service life of the breaking hammer is prolonged.

Description

Hydraulic breaking hammer reversing valve structure

Technical Field

The utility model belongs to the technical field of breaking hammers, relates to a hydraulic breaking hammer, and particularly relates to a reversing valve structure of the hydraulic breaking hammer.

Background

To break stone, concrete and other construction materials, a breaking hammer may be attached to various machines, such as an excavator, a backhoe or other similar machine, the breaking hammer being mounted to an arm of the machine and connected to a hydraulic system, a high pressure fluid in the hydraulic system being supplied to the breaking hammer to drive a piston in contact with a work tool to reciprocate and strike the work tool, completing a breaking task. The reversing valve in the existing hydraulic breaking hammer has low oil drainage pressure capacity, and can affect the use effect and the service life of the hydraulic breaking hammer after being used for a long time.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a reversing valve structure of a hydraulic breaking hammer, which is optimized in structure and has the function of improving oil drainage pressure.

The purpose of the utility model can be realized by the following technical scheme: the reversing valve structure of the hydraulic breaking hammer is characterized by comprising a reversing valve body and a valve core arranged in the reversing valve body, wherein a valve sleeve capable of moving axially is arranged outside the valve core, a plurality of oil inlet holes are formed in the outer wall of the valve core at intervals in the circumferential direction, and a plurality of groups of pressure equalizing hole units are formed in the outer wall of the valve core and located between the outer end of the valve core and the oil inlet holes.

In the above reversing valve structure for the hydraulic breaking hammer, the pressure equalizing hole units are all composed of pressure equalizing holes.

In the above structure of the hydraulic breaker directional valve, the peripheral wall of the outer end of the valve core is provided with a radial protrusion part protruding outwards in the radial direction.

In the above reversing valve structure for the hydraulic breaking hammer, the pressure equalizing holes are circumferentially and uniformly distributed on the outer wall of the valve core.

In the above structure of the reversing valve of the hydraulic breaking hammer, the pressure equalizing hole is vertically or obliquely arranged in a penetrating manner.

In the above reversing valve structure for the hydraulic breaking hammer, the pressure equalizing holes are circumferentially and uniformly distributed in the radial protrusion part.

In the above structure of the reversing valve of the hydraulic breaking hammer, the pressure equalizing hole is transversely or obliquely arranged in a penetrating manner.

In the above structure of the reversing valve of the hydraulic breaking hammer, the pressure equalizing hole is obliquely formed from the outer wall of the radial bulge part to the inner peripheral wall of the valve core in a penetrating manner.

Compared with the prior art, this hydraulic breaking hammer switching-over valve structure is used for carrying out the fluid pressure release to switching-over valve case inside, slows down oil feed pressure, makes the inside oil pressure of case stable, improves the result of use and the life of quartering hammer.

Drawings

Fig. 1 is a schematic sectional structural view of the structure of the hydraulic breaking hammer reversing valve.

Fig. 2 is a valve core structure in which a pressure equalizing hole is vertically formed through in the first embodiment.

Fig. 3 is a valve core structure in which a pressure equalizing hole is obliquely formed therethrough according to the first embodiment.

Fig. 4 is a valve core structure in which a pressure equalizing hole is obliquely formed therethrough according to the first embodiment.

Fig. 5 is a valve core structure in which the pressure equalizing hole is vertically perforated in the second embodiment.

Fig. 6 is a valve core structure in which the pressure equalizing hole is obliquely formed through in the second embodiment.

Fig. 7 shows a valve body structure in which the pressure equalizing hole is formed to penetrate obliquely in the second embodiment.

Fig. 8 is a valve body structure in which a pressure equalizing hole is obliquely formed through in the third embodiment.

In the figure, 1, a reversing valve body; 2. a valve core; 3. a valve housing; 4. an oil inlet hole; 5. a pressure equalizing hole; 6. a radial projection.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, and fig. 8, the reversing valve structure of the hydraulic breaking hammer includes a reversing valve body 1 and a valve core 2 disposed in the reversing valve body 1, a valve sleeve 3 axially movable is disposed outside the valve core 2, a plurality of oil inlets 4 are circumferentially spaced on an outer wall of the valve core 2, and a plurality of pressure equalizing hole units are disposed on the outer wall of the valve core 2 and between the outer end of the valve core 2 and the oil inlets 4.

In the present embodiment, the spool 2 has a radial projection 6 thereon; in addition, the pressure equalizing hole unit is a group, and the group of pressure equalizing hole unit can be arranged on the outer wall of the valve core 2 or on the radial bulge part 6, and the specific description is as follows:

the pressure equalizing hole units are composed of a plurality of pressure equalizing holes 5, and radial protrusions 6 are protruded outwards in the radial direction on the peripheral wall of the outer end of the valve core 2.

The first embodiment is as follows:

as shown in fig. 2, 3, and 4, the pressure equalizing holes 5 are circumferentially and uniformly distributed on the outer wall of the valve core 2, the pressure equalizing holes 5 are vertically or obliquely opened, and the pressure equalizing holes 5 are obliquely opened toward the outer end of the valve core 2 or obliquely opened toward the oil inlet 4.

Example two:

as shown in fig. 5, 6, and 7, the pressure equalizing holes 5 are circumferentially and uniformly distributed in the radial protrusion 6, the pressure equalizing holes 5 are transversely or obliquely opened, and the pressure equalizing holes 5 are obliquely opened from the outer wall of the radial protrusion 6 toward the inner wall of the radial protrusion 6 or obliquely opened from the outer end of the valve element 2 toward the inner wall of the radial protrusion 6.

Example three:

as shown in fig. 8, the pressure equalizing hole 5 is formed by the outer wall of the radial protrusion 6 obliquely penetrating in the direction of the inner peripheral wall of the valve body 2.

The pressure equalizing holes 5 can be opened in various ways.

Offer through a plurality of pressure-equalizing holes 5 and be used for carrying out the pressure release to the inside fluid of case 2, slow down the pressure of oil feed, make the inside oil pressure of case 2 stable.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a hydraulic breaking hammer switching-over valve structure, its characterized in that, this switching-over valve structure include switching-over valve body (1) and set up case (2) in switching-over valve body (1), case (2) be equipped with axially movable's valve barrel (3) outward, case (2) outer wall on the circumference interval be equipped with a plurality of inlet port (4), on the outer wall of case (2) and be located and seted up a plurality of pressure-equalizing hole units of group between this case (2) outer end and inlet port (4).

2. A hydraulic breaking hammer reversing valve structure according to claim 1, characterized in that a plurality of groups of the pressure equalizing hole units are composed of a plurality of pressure equalizing holes (5).

3. A hydraulic breaker hammer directional valve structure according to claim 2 wherein the peripheral wall of the outer end of the spool (2) has a radially outwardly projecting portion (6).

4. The reversing valve structure of the hydraulic breaking hammer according to claim 1, wherein the pressure equalizing holes (5) are circumferentially and uniformly distributed on the outer wall of the valve core (2).

5. A structure of a reversing valve of a hydraulic breaking hammer according to claim 4, characterized in that the pressure equalizing hole (5) is vertically or obliquely arranged.

6. A hydraulic breaking hammer reversing valve structure according to claim 3, characterized in that a plurality of the pressure equalizing holes (5) are uniformly distributed in the circumferential direction in the radial bulge (6).

7. A structure of a reversing valve of a hydraulic breaking hammer according to claim 6, characterized in that the pressure equalizing hole (5) is formed to penetrate through transversely or obliquely.

8. A hydraulic breaking hammer reversing valve structure according to claim 3, characterized in that the pressure equalizing hole (5) is formed by the outer wall of the radial bulge (6) obliquely and penetratingly in the direction of the inner peripheral wall of the valve core (2).