Five-hole one-way lock

Abstract

The utility model provides a five-hole one-way lock, which relates to the field of one-way locks, and comprises a valve body, a valve plug is arranged in the valve body, a valve string is arranged in the valve body, a valve core assembly is arranged in the valve string, a piston is arranged in the valve body, a first O-shaped ring and a first check ring are respectively arranged in the valve body, and a second O-shaped ring and a second check ring are respectively arranged in the valve body. The valve string comprises an end sleeve, the valve string is matched with the valve element assembly, a spring is arranged in the end sleeve, the valve element assembly comprises a valve element body, a valve pad and a spacer bush, second O-shaped rings and second check rings are arranged in the valve string, and the number of the first O-shaped rings, the number of the first check rings, the number of the second O-shaped rings and the number of the second check rings are all multiple. The five-hole one-way lock provided by the utility model can be used for controlling a coal mine hydraulic support jack and locking high-pressure liquid in a working cavity of the jack, so that a certain metal structural part of the support plays a supporting role.

Description

Technical Field

[0001] The utility model relates to the field of one-way locks, in particular to a five-hole one-way lock. Background Art

[0002] The hydraulic lock is used to lock the bracket and prevent it from moving. When there are heavy objects on the bracket, it will be very dangerous if the bracket drops by itself. Therefore, it is necessary to lock the bracket to prevent the bracket from dropping. If this is only in one direction, a one-way lock is used. Sometimes both directions need to be locked, so a two-way lock is used.

[0003] The use of hydraulic locks is very common, but today's hydraulic one-way locks do not have the characteristics of strong adaptability and reliable performance.

[0004] Therefore, it is necessary to provide a five-hole one-way lock to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model provides a five-hole one-way lock, which solves the problem that the current hydraulic one-way locks do not have the characteristics of strong adaptability and reliable performance.

[0006] In order to solve the above technical problems, the utility model provides a five-hole one-way lock, including: a valve body, a valve plug is arranged inside the valve body, and a valve string is arranged inside the valve body, a valve core assembly is arranged inside the valve string, a piston is arranged inside the valve body, and a first O-ring and a first retaining ring are respectively arranged inside the valve body.

[0007] Preferably, the valve string includes an end sleeve, and the valve string is adapted to the valve core assembly.

[0008] Preferably, a spring is arranged inside the end sleeve.

[0009] Preferably, the valve core assembly includes a valve core body, a valve gasket and a spacer sleeve.

[0010] Preferably, a second O-ring and a second retaining ring are provided inside the valve string.

[0011] Preferably, the number of the first O-ring, the first retaining ring, the second O-ring and the second retaining ring are all several.

[0012] Compared with the related art, the five-hole one-way lock provided by the utility model has the following beneficial effects:

[0013] The utility model provides a five-hole one-way lock, which can be used for controlling the jack of a coal mine hydraulic support and realizes the locking of the high-pressure liquid in the working chamber of the jack, so that a certain metal structure of the support plays a supporting role, through the arrangement of a valve body, a screw plug, a valve string, a valve core assembly, a piston, a first O-ring, a first retaining ring, an end sleeve, a spring, a valve core body, a valve pad, a spacer sleeve, a second O-ring and a second retaining ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a five-hole one-way lock provided by the utility model;

[0015] Figure 2 This is a structural schematic diagram of the end sleeve provided by the utility model.

[0016] Numbers in the figure:

[0017] 1. Valve body, 2. Screw plug, 3. Valve string, 4. Valve core assembly, 5. Piston, 6. First O-ring, 7. First retaining ring, 8. End sleeve, 9. Spring, 10. Valve core body, 11. Valve gasket, 12. Spacer, 13. Second O-ring, 14. Second retaining ring. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0019] Example

[0020] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the structure of a five-hole one-way lock provided by the utility model; Figure 2 A schematic diagram of the structure of the end sleeve provided by the utility model. The five-hole one-way lock comprises: a valve body 1, a valve plug is arranged inside the valve body 1, a valve string 3 is arranged inside the valve body 1, a valve core assembly 4 is arranged inside the valve string 3, a piston 5 is arranged inside the valve body 1, and a first O-ring 6 and a first retaining ring 7 are arranged inside the valve body 1, respectively, the valve string 3 comprises an end sleeve 8, and the valve string 3 is adapted to the valve core assembly 4, a spring 9 is arranged inside the end sleeve 8, the valve core assembly 4 comprises a valve core body 10, a valve pad 11 and a spacer sleeve 12, a second O-ring 13 and a second retaining ring 14 are arranged inside the valve string 3, and the number of the first O-ring 6, the first retaining ring 7, the second O-ring 13 and the second retaining ring 14 are all several.

[0021] The working principle of the five-hole one-way lock provided by the utility model is as follows:

[0022] When the bracket operator controls the jack to give the "extend" command, liquid enters from the liquid inlet of the one-way lock, and the liquid inlet pressure is used to open the valve core body 10 of the one-way lock, allowing the liquid to enter the lower chamber of the cylinder, thereby extending the cylinder jack; when the bracket operator controls the jack to give the "stop" command, the valve core body 10 of the one-way lock is restored to a sealed state by the elastic force of the small spring 9 and the pressure in the jack; when the bracket operator controls the "retract" command, liquid enters from the control port of the one-way lock, and the liquid inlet pressure pushes the push rod to move, and the push rod pushes the valve core body 10 to release the pressure in the lower chamber of the cylinder, thereby achieving a retracting action.

[0023] Compared with the related art, the five-hole one-way lock provided by the utility model has the following beneficial effects:

[0024] Through the arrangement of valve body 1, screw plug 2, valve string 3, valve core assembly 4, piston 5, first O-ring 6, first retaining ring 7, end sleeve 8, spring 9, valve core body 10, valve pad 11, spacer sleeve 12, second O-ring 13 and second retaining ring 14, it can be used to control the jack of coal mine hydraulic support and realize the locking of high-pressure liquid in the working chamber of the jack, so that a certain metal structure of the support can play a supporting role.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A five-hole one-way lock, characterized in that: include: A valve body (1), wherein a valve plug is arranged inside the valve body (1), and a valve string (3) is arranged inside the valve body (1), a valve core assembly (4) is arranged inside the valve string (3), a piston (5) is arranged inside the valve body (1), and a first O-ring (6) and a first retaining ring (7) are respectively arranged inside the valve body (1).

2. The five-hole one-way lock according to claim 1, characterized in that: The valve string (3) comprises an end sleeve (8), and the valve string (3) is adapted to the valve core assembly (4).

3. The five-hole one-way lock according to claim 2, characterized in that: A spring (9) is arranged inside the end sleeve (8).

4. The five-hole one-way lock according to claim 1, characterized in that: The valve core assembly (4) comprises a valve core body (10), a valve cushion (11) and a spacer sleeve (12).

5. The five-hole one-way lock according to claim 1, characterized in that: A second O-ring (13) and a second retaining ring (14) are arranged inside the valve string (3).

6. The five-hole one-way lock according to claim 5, characterized in that: The number of the first O-ring (6), the first retaining ring (7), the second O-ring (13) and the second retaining ring (14) are all multiple.

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