CN210622833U

CN210622833U - Bidirectional locking valve for hydraulic support

Info

Publication number: CN210622833U
Application number: CN201921812250.XU
Authority: CN
Inventors: 郭凯; 王亮
Original assignee: Jinan Longli Hydraulic Device Co ltd
Current assignee: Jinan Longli Hydraulic Device Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-05-26
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a two-way lock stop valve for hydraulic support, which comprises a valve body, the both ends center department screw thread fixedly connected with end cover of valve body, the center department fixedly connected with base of end cover, the spring has been cup jointed in week side of base, the inside lateral wall of end cover is provided with the sliding sleeve, the center department sliding connection of sliding sleeve has the valve head, the inside center department sliding connection of valve body has the piston, the both ends fixedly connected with ejector pin of piston, the top of the both sides valve body of piston is provided with the oil inlet, the bottom of the both sides valve body of piston is provided with the oil-out. The bottom end of the valve head is provided with a guide pillar, the spring is sleeved on the periphery of the guide pillar, and the spring is arranged between the valve head and the base. The utility model discloses a set up piston and ejector pin, when an oil inlet oil feed, another oil inlet switches on simultaneously, advances the oil return and is the route, cuts off suddenly when the oil feed, and the security of hydraulic support is guaranteed to the unable oil return of both sides oil-out.

Description

Bidirectional locking valve for hydraulic support

Technical Field

The utility model relates to a hydraulic component field especially relates to a two-way lock valve for hydraulic support.

Background

The safety of a tunneling face is ensured along with the improvement of the mechanical degree of a tunneling device, a hydraulic support is key equipment for comprehensive mechanical coal mining, the hydraulic support is supporting equipment for a coal mine comprehensive mechanical coal mining working face and is key equipment for comprehensive mining, therefore, the hydraulic support is an important mine device, the reliability of the hydraulic support mainly depends on the reliability of a hydraulic assembly, the damage of a valve directly causes the failure or misoperation of the hydraulic support, personal accidents and working face roof fall accidents are caused, even the working face stops production, the valve for the hydraulic support is an important element for ensuring the normal work of the hydraulic support under a coal mine, and is also the most precise and most critical element in the support, and in the existing locking valve for the hydraulic support, a combined bidirectional locking valve does not exist, and the high reliability is achieved.

Disclosure of Invention

The utility model discloses a two-way locking valve for hydraulic support that the purpose is in order to solve the shortcoming that exists among the prior art, and proposed.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a two-way lock valve for hydraulic support, including the valve body, the both ends center department screw thread fixedly connected with end cover of valve body, the center department fixedly connected with base of end cover, the spring has been cup jointed to the week side of base, the inside lateral wall of end cover is provided with the sliding sleeve, the center department sliding connection of sliding sleeve has the valve head, the inside center department sliding connection of valve body has the piston, the both ends fixedly connected with ejector pin of piston, the top of the both sides valve body of piston is provided with the oil inlet, the bottom of the both sides valve body of piston is provided with the oil-out.

As a further description of the above technical solution:

the top ends of the ejector rods on the two sides are in contact with the top ends of the valve heads on the two sides.

As a further description of the above technical solution:

the bottom end of the valve head is provided with a guide pillar, the spring is sleeved on the periphery of the guide pillar, and the spring is arranged between the valve head and the base.

As a further description of the above technical solution:

the top end of the valve head is conical, and a conical hole is formed in the contact position of the valve body and the valve head.

As a further description of the above technical solution:

and a pipeline communicated to the oil outlet is arranged in the valve body at the bottom end of the valve head.

As a further description of the above technical solution:

the top end of the sliding sleeve exceeds the lowest end of the valve head at the maximum diameter.

As a further description of the above technical solution:

the valve body is provided with corresponding internal thread in the threaded connection department with the end cover, the end cover is provided with corresponding external screw thread in the junction with the valve body, the week side of the bottom base of end cover is provided with four gas pockets.

The utility model discloses following beneficial effect has:

1. the utility model discloses a set up piston and ejector pin, when an oil inlet oil feed, another oil inlet switches on simultaneously, advances the oil return and is the route, cuts off suddenly when the oil feed, and the security of hydraulic support is guaranteed to the unable oil return of both sides oil-out.

2. The utility model discloses a set up sliding sleeve and conical valve head, conical valve head has good leakproofness, and hydraulic oil enters into the position of spring when the sliding sleeve can avoid the oil return, increases the life of spring.

Drawings

Fig. 1 is a front cross-sectional view of a bi-directional latching valve for a hydraulic mount according to the present invention;

fig. 2 is a top view of a bi-directional latching valve for a hydraulic mount according to the present invention;

fig. 3 is a side view of a bi-directional locking valve for a hydraulic mount according to the present invention.

Illustration of the drawings:

1. a valve body; 2. a valve head; 3. a top rod; 4. a piston; 5. an oil inlet; 6. an oil outlet; 7. a spring; 8. a sliding sleeve; 9. an end cap; 10. a base.

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 "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a two-way lock valve for hydraulic support, including valve body 1, the both ends center department screw thread fixedly connected with end cover 9 of valve body 1, be used for the valve head 2 of easy to assemble and change spring 7, the center department fixedly connected with base 10 of end cover 9, be used for fixing spring 7, spring 7 has been cup jointed to the week side of base 10, be used for pushing up valve head 2, timely prevention oil return, the inside lateral wall of end cover 9 is provided with sliding sleeve 8, be used for sliding connection valve head 2, sliding connection has valve head 2 at sliding sleeve 8's center department, sliding connection has piston 4 at the inside center department of valve body 1, be used for opening the hydraulic fluid port simultaneously, the both ends fixedly connected with ejector pin 3 of piston 4, be used for promoting valve head 2, the top of the both sides valve body 1 of piston 4 is provided with oil inlet 5, be used for the oil inlet.

The top ends of the push rods 3 on the two sides are contacted with the top ends of the valve heads 2 on the two sides, so that the valve heads 2 are pushed in time. The bottom of valve head 2 is provided with the guide pillar, and spring 7 cup joints around the guide pillar, ensures spring 7's stability, and spring 7 sets up between valve head 2 and base 10. The top of valve head 2 is the toper, strengthens holistic sealing performance, and valve body 1 is provided with the bell mouth in the contact department with valve head 2, convenient sealed. The inside of valve body 1 at the bottom of valve head 2 is provided with the pipeline that communicates to oil-out 6, realizes one-way conduction. The top end of the sliding sleeve 8 exceeds the lowest end of the maximum diameter position of the valve head 2, so that hydraulic oil is prevented from entering the spring 7. The valve body 1 is provided with corresponding internal thread in the threaded connection department with end cover 9, and end cover 9 is provided with corresponding external screw thread in the junction department with valve body 1, and the week side of the bottom base 10 of end cover 9 is provided with four gas pockets for the valve head 2 is ventilated when being pressed back.

The working principle is as follows: 5 oil intakes of one side oil inlet, hydraulic oil promotes valve head 2 and removes to the direction of homonymy end cover 9, valve head 2 contracts at the inside oppression spring 7 of sliding sleeve 8, valve head 2 removes to sliding sleeve 8 when inside completely, the hydraulic passage opens completely, at this moment, because the pressure of hydraulic oil, it removes to promote piston 4 to the opposite side, piston 4 drives valve head 2 that ejector pin 3 promoted the opposite side and removes, at this moment, the hydraulic oil of opposite side can flow from oil-out 6 and return oil toward oil inlet 5, constitute the complete route in one side, when the oil inlet 5 of certain one side does not the oil feed, the oil-out 6 of both sides are closed simultaneously, realize the pressurize and prevent that hydraulic.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A two-way latching valve for hydraulic support, including valve body (1), its characterized in that: the improved oil-water mixing valve is characterized in that the centers of the two ends of the valve body (1) are fixedly connected with end covers (9) in a threaded mode, the center of each end cover (9) is fixedly connected with a base (10), springs (7) are sleeved on the peripheral sides of the bases (10), the inner side wall of each end cover (9) is provided with a sliding sleeve (8), the center of each sliding sleeve (8) is slidably connected with a valve head (2), the center of the inner portion of the valve body (1) is slidably connected with a piston (4), ejector rods (3) are fixedly connected with the two ends of each piston (4), the top ends of the valve bodies (1) on the two sides of each piston (4) are provided with an oil inlet (5), and the bottom ends of the.

2. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: the top ends of the push rods (3) on the two sides are contacted with the top ends of the valve heads (2) on the two sides.

3. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: the bottom end of the valve head (2) is provided with a guide pillar, the spring (7) is sleeved on the periphery of the guide pillar, and the spring (7) is arranged between the valve head (2) and the base (10).

4. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: the top end of the valve head (2) is conical, and a conical hole is formed in the contact position of the valve body (1) and the valve head (2).

5. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: and a pipeline communicated to the oil outlet (6) is arranged in the valve body (1) at the bottom end of the valve head (2).

6. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: the top end of the sliding sleeve (8) exceeds the lowest end of the valve head (2) at the maximum diameter.

7. The bi-directional latch valve for a hydraulic mount of claim 1, wherein: the valve body (1) is provided with corresponding internal thread in the threaded connection department with end cover (9), end cover (9) are provided with corresponding external screw thread in the junction with valve body (1), the week side of bottom base (10) of end cover (9) is provided with four gas pockets.