CN211975558U

CN211975558U - Control valve with improved performance on hydraulic breaking hammer

Info

Publication number: CN211975558U
Application number: CN202020265094.6U
Authority: CN
Inventors: 林杰; 张雷; 庄聚; 张波
Original assignee: Qingdao Shengxinda Machinery Co ltd
Current assignee: Qingdao Shengxinda Machinery Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-11-20
Anticipated expiration: 2030-03-06

Abstract

The utility model belongs to the technical field of control valves, and particularly discloses a control valve with improved performance on a hydraulic breaking hammer, which comprises a valve body, a conical valve core and a filter; the upper end face of the valve body is provided with an installation opening, the installation opening is provided with a corresponding valve cover, and the edge of the valve cover is provided with a corresponding fixed connection clamping groove, so that the control valve is integrally and conveniently fixed with the installation structure of the main body of the breaking hammer; the bottom end of the connecting column base is arranged in the mounting hole groove, so that the valve body is in clearance connection with the conical valve core; the bottom of the mounting hole groove is provided with a corresponding top pressure spring, and the bottom of the connecting column foot is connected with the top end of the top pressure spring; the conical valve core is elastically connected with the interior of the valve body through the limited movable connection between the connecting column base and the jacking spring, and the conical valve core is more stably moved through the elastic connecting rod; high-pressure oil enters the valve body through the oil inlet hole, is filtered through the filter and then is led in through the oil guide insertion pipe, so that the conical valve core can move more smoothly.

Description

Control valve with improved performance on hydraulic breaking hammer

Technical Field

The utility model relates to a control valve technical field specifically is a control valve that performance improves on hydraulic breaking hammer.

Background

Hydraulic breakers, also known as hydraulic breakers or hydraulic breakers. The power source of the hydraulic breaking hammer is pressure oil provided by a pump station of an excavator or a loader, the hydraulic pumps of the excavator or the loader are used as output power, hydraulic oil is used as a medium, and the high-pressure hydraulic oil is controlled by a distributing valve to alternately enter a front cavity and a rear cavity of a middle cylinder body of the breaking hammer. So that the piston installed in the middle cylinder can realize reciprocating motion under the action of pressure difference. During the stroke, high-pressure hydraulic oil is fed into the rear cavity of the cylinder in the breaking hammer, and the piston impacts the drill rod to cut rock under the combined action of compressed nitrogen and the high-pressure oil in the upper cylinder; during return stroke, the front cavity of the middle cylinder is communicated with high-pressure oil to push the piston to move backwards and compress nitrogen in the upper cylinder body, so that a working cycle is completed. The repeated stroke and return stroke of the piston makes the drill rod impact broken rock, stone, concrete, etc. and can clean floating stone and soil in rock gap effectively.

Hydraulic breakers have become an important work tool for hydraulic excavators, and hydraulic breakers have been mounted on backhoes or wheel loaders for breaking work. As the exploitation of the open-pit mining industry in China forbids the use of an explosion method, the hydraulic breaking hammer industry can be developed more rapidly. However, in such a rapid development, the power transmission 'heart' -distribution control valve of the breaking hammer still has some problems, so that the hydraulic breaking hammer is unstable in performance, high in use and production cost and limited in batch use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a control valve that performance improves on hydraulic breaking hammer to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a control valve with improved performance on a hydraulic breaking hammer comprises a valve body, a conical valve core and a filter; the upper end face of the valve body is provided with an installation opening, and the installation opening is provided with a corresponding valve cover; a conical valve core is arranged in the valve body, and a plurality of uniformly spaced connecting column feet are arranged on the lower end face of the conical valve core; the bottom of the valve body is provided with a connecting retainer ring, the connecting retainer ring is provided with an installation hole groove corresponding to the connecting column base, and the bottom end of the connecting column base is arranged in the installation hole groove, so that the conical valve core is in clearance connection with the valve body; a fixed lantern ring is arranged on the outer side of the conical valve core, an elastic connecting rod is connected to the outer side of the fixed lantern ring, and the tail end of the elastic connecting rod is connected to the inner wall of the valve body; the side of the valve body is provided with an oil inlet hole with an oblique caliber, the inner side of the oil inlet hole is provided with a filter, the output end of the filter is provided with an oil guide insertion pipe, and the tail end of the oil guide insertion pipe is connected with an input pipe.

Preferably, the valve cover is fixedly connected with the valve body, and a corresponding fixed connection clamping groove is formed in the edge of the valve cover.

Preferably, the conical valve core is of a conical structure with a narrow upper end and a wide lower end, and the upper end of the conical valve core is movably contacted with the valve cover.

Preferably, the bottom of the mounting hole groove is provided with a corresponding top pressure spring, and the bottom of the connecting column foot is connected to the top end of the top pressure spring.

Preferably, the lower end face of the valve body is provided with an oil outlet, and the input caliber of the oil outlet is larger than the output caliber of the oil outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has simple structure, stronger mobility, good performance and low manufacturing cost; the conical valve core is elastically connected with the interior of the valve body through the limited movable connection between the connecting column base and the jacking spring, and the conical valve core is more stably moved through the elastic connecting rod; high-pressure oil enters the valve body through the oil inlet hole, is filtered through the filter and then is led in through the oil guide insertion pipe, so that the conical valve core can move more smoothly.

Drawings

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

In the figure: 1. a valve body; 2. a valve cover; 3. a conical valve core; 4. connecting the column base; 5. connecting a retainer ring; 6. Mounting a hole groove; 7. a fixed collar; 8. an elastic link; 9. an oil inlet hole; 10. a filter; 11. an oil guide cannula; 12. oil guide insertion pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: a control valve with improved performance on a hydraulic breaking hammer comprises a valve body 1, a conical valve core 3 and a filter 10; the upper end surface of the valve body 1 is provided with an installation opening, and the installation opening is provided with a corresponding valve cover 2; a conical valve core 3 is arranged in the valve body 1, and a plurality of connecting column feet 4 which are uniformly spaced are arranged on the lower end face of the conical valve core 3; the bottom of the valve body 1 is provided with a connecting check ring 5, the connecting check ring 5 is provided with a mounting hole groove 6 corresponding to the connecting column foot 4, and the bottom end of the connecting column foot 4 is arranged in the mounting hole groove 6, so that the conical valve core 3 is in clearance connection with the valve body 1; a fixed sleeve ring 7 is arranged on the outer side of the conical valve core 3, an elastic connecting rod 8 is connected to the outer side of the fixed sleeve ring 7, and the tail end of the elastic connecting rod 8 is connected to the inner wall of the valve body 1; the side of the valve body 1 is provided with an oil inlet hole 9 with an oblique caliber, the inner side of the oil inlet hole 9 is provided with a filter 10, the output tail end of the filter 10 is provided with an oil guide insertion pipe 11, and the tail end of the oil guide insertion pipe 11 is connected with an input pipe 12.

Further, valve gap 2 and valve body 1 fixed connection, 2 edges of valve gap are provided with corresponding fixed connection draw-in groove.

Furthermore, the conical valve core 3 is in a conical structure with a narrow upper end and a wide lower end, and the upper end of the conical valve core 3 is movably contacted with the valve cover.

Furthermore, the bottom of the mounting hole groove 6 is provided with a corresponding jacking spring, and the bottom of the connecting column base 4 is connected to the top end of the jacking spring.

Further, the lower end face of the valve body 1 is provided with an oil outlet, and the input caliber of the oil outlet is larger than the output caliber of the oil outlet.

The working principle is as follows: the upper end face of the valve body 1 is provided with an installation opening, the installation opening is provided with a corresponding valve cover 2, the valve cover 2 is fixedly connected with the valve body 1, and the edge of the valve cover 2 is provided with a corresponding fixed connection clamping groove, so that the control valve is integrally and conveniently fixed with the installation structure of the main body of the breaking hammer; a conical valve core 3 is arranged in the valve body 1, and a plurality of connecting column feet 4 which are uniformly spaced are arranged on the lower end face of the conical valve core 3; the bottom of the valve body 1 is provided with a connecting check ring 5, the connecting check ring 5 is provided with a mounting hole groove 6 corresponding to the connecting column foot 4, and the bottom end of the connecting column foot 4 is arranged in the mounting hole groove 6, so that the conical valve core 3 is in clearance connection with the valve body 1; the bottom of the mounting hole groove 6 is provided with a corresponding jacking spring, and the bottom of the connecting column base 4 is connected with the top end of the jacking spring;

a fixed lantern ring 7 is arranged on the outer side of the conical valve core 3, an elastic connecting rod 8 is connected to the outer side of the fixed lantern ring 7, and the tail end of the elastic connecting rod 8 is connected to the inner wall of the valve body 1; the conical valve core 3 is elastically connected with the interior of the valve body 1 through the limited movable connection between the connecting column foot 4 and the jacking spring, and the conical valve core 3 is more stably moved through the elastic connecting rod 8; the side of the valve body 1 is provided with an oil inlet hole 9 with an oblique caliber, a filter 10 is arranged on the inner side of the oil inlet hole 9, the output end of the filter 10 is provided with an oil guide insertion pipe 11, the tail end of the oil guide insertion pipe 11 is connected with an input pipe 12, high-pressure oil enters the valve body 1 through the oil inlet hole 9 and is filtered through the filter 10 firstly, and then the high-pressure oil is led in through the oil guide insertion pipe 11, so that the conical valve core 3 can move more smoothly.

It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a control valve that performance improves on hydraulic breaking hammer which characterized in that: comprises a valve body (1), a conical valve core (3) and a filter (10); the upper end surface of the valve body (1) is provided with an installation opening, and the installation opening is provided with a corresponding valve cover (2); a conical valve core (3) is arranged in the valve body (1), and a plurality of connecting column feet (4) which are uniformly spaced are arranged on the lower end face of the conical valve core (3); the bottom of the valve body (1) is provided with a connecting check ring (5), the connecting check ring (5) is provided with a mounting hole groove (6) corresponding to the connecting column base (4), and the bottom end of the connecting column base (4) is arranged in the mounting hole groove (6), so that the conical valve core (3) is in clearance connection with the valve body (1); a fixed sleeve ring (7) is arranged on the outer side of the conical valve core (3), an elastic connecting rod (8) is connected to the outer side of the fixed sleeve ring (7), and the tail end of the elastic connecting rod (8) is connected to the inner wall of the valve body (1); the side of the valve body (1) is provided with an oil inlet hole (9) with an oblique caliber, the inner side of the oil inlet hole (9) is provided with a filter (10), the output tail end of the filter (10) is provided with an oil guide insertion pipe (11), and the tail end of the oil guide insertion pipe (11) is connected with an input pipe (12).

2. A control valve for improved performance on a hydraulic demolition hammer as claimed in claim 1 wherein: valve gap (2) and valve body (1) fixed connection, valve gap (2) edge is provided with corresponding fixed connection draw-in groove.

3. A control valve for improved performance on a hydraulic demolition hammer as claimed in claim 1 wherein: the conical valve core (3) is of a conical structure with a narrow upper end and a wide lower end, and the upper end of the conical valve core (3) is movably contacted with the valve cover (2).

4. A control valve for improved performance on a hydraulic demolition hammer as claimed in claim 1 wherein: the bottom of the mounting hole groove (6) is provided with a corresponding jacking spring, and the bottom of the connecting column base (4) is connected to the top end of the jacking spring.

5. A control valve for improved performance on a hydraulic demolition hammer as claimed in claim 1 wherein: the lower end face of the valve body (1) is provided with an oil outlet, and the input caliber of the oil outlet is larger than the output caliber of the oil outlet.