Hydraulic support

Abstract

The utility model discloses a hydraulic support, which comprises a top beam, a side guard plate and a side thrust device, the side thrust device comprises a side thrust jack, two mounting sleeves and two guide rods, the two guide rods are respectively mounted in the two mounting sleeves, and the two mounting sleeves are respectively fixed on the top beam; one end of each guide rod is hinged with the end part of the corresponding side pushing jack, and the other end of each guide rod is detachably connected with the side protecting plate on the corresponding side; and each guide rod is detachably connected with the top beam through an anti-rotation assembly. Due to the fact that the two guide rods are detachably connected with the side protection plates on the two sides and the two guide rods can also be detachably connected with the top beam, when the left working face and the right working face are exchanged, the connection between the guide rods and the side protection plates and the connection between the top beam and the guide rods can be conveniently detached, and the side pushing device does not need to be detached. Therefore, the hydraulic support can adapt to a left working face and a right working face at the same time, is not limited by underground working conditions when turning directions, and can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a hydraulic support. Background Art

[0002] Hydraulic support is a structure used to control the mine pressure of coal mining working face. The mine pressure of the mining face acts on the hydraulic support in the form of external load. In the mechanical system of interaction between the hydraulic support and the surrounding rock of the mining face, if the combined force of each support of the hydraulic support and the combined force of the external load acting on the hydraulic support by the roof are exactly in the same straight line, then the hydraulic support is very suitable for the surrounding rock of the mining face.

[0003] With the improvement of processing quality, the service life of hydraulic supports is further increased. For some hydraulic supports, the left working face is switched to the right working face for use without being lifted up to the well. The top beam side thrust device of the hydraulic support needs to be removed and the direction reversed. Due to the limitations of underground working conditions, disassembly and assembly are difficult. Utility Model Content

[0004] In view of the above-mentioned deficiencies, the technical problem to be solved by the utility model is to provide a hydraulic support which can adapt to the left and right working surfaces at the same time and is not restricted by the underground working conditions when changing directions, and can be easily disassembled and assembled.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A hydraulic support comprises a top beam, side guard plates arranged on both sides of the top beam and a side thrust device, the side thrust device comprises a side thrust jack, and the side thrust device further comprises two mounting sleeves and two guide rods, the two guide rods are respectively mounted in the two mounting sleeves, and the two mounting sleeves are respectively fixed to the top beam; the two guide rods are arranged one-to-one with the two ends of the side thrust jacks, one end of each guide rod is hingedly connected to the corresponding top end of the side thrust jack, and the other end of each guide rod is detachably connected to the side guard plate on the corresponding side; and each guide rod is detachably connected to the top beam through an anti-rotation assembly.

[0007] Preferably, the side thrust device further comprises a two-way lock safety valve, which comprises two linked one-way valves, one of which is arranged on the return liquid pipeline of the side thrust jack, and the other one-way valve is arranged on the inlet liquid pipeline of the side thrust jack.

[0008] Preferably, main reinforcement is arranged on the top beam, and a process groove is arranged on one side of the main reinforcement located at the bottom of the cylinder of the side thrust jack.

[0009] Preferably, each of the mounting sleeves is provided with a guide groove, the extension direction of the guide groove is the same as the extension direction of the guide rod, and the length of the guide groove is greater than the stroke of the side thrust jack.

[0010] A preferred embodiment is that a side connecting pin hole is provided on each side of the side guard plate; a first pin hole is provided on the end of each guide rod away from the side push jack; the side connecting pin hole and the first pin hole are detachably connected by a side guard plate locking pin, and the side guard plate locking pin is extended horizontally.

[0011] Preferably, a top connecting pin hole is provided on the top beam; a second pin hole is provided on each of the guide rods; the top connecting pin hole and the second pin hole are connected by a top beam locking pin, and the top beam locking pin is vertically extended.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] The hydraulic support of the utility model includes a top beam, side guard plates arranged on both sides of the top beam, and a side thrust device, the side thrust device includes a side thrust jack, and the side thrust device also includes two mounting sleeves and two guide rods, the two guide rods are respectively mounted in the two mounting sleeves, and the two mounting sleeves are respectively fixed to the top beam; the two guide rods are arranged one-to-one with the two ends of the side thrust jack, one end of each guide rod is hingedly connected to the top of the corresponding side thrust jack, and the other end of each guide rod is detachably connected to the side guard plate on the corresponding side; and each guide rod is detachably connected to the top beam through an anti-rotation assembly. Because the two ends of the side thrust jack are detachably connected to the side guard plates on both sides through the two guide rods, and the two guide rods are also detachably connected to the top beam, the utility model can conveniently disassemble the connection between the guide rod and the side guard plate, and the connection between the top beam and the guide rod when the left and right working surfaces are interchanged, and the left and right working surfaces can be adapted to at the same time without disassembling the top beam side thrust device. Therefore, when the direction is changed, the utility model is not limited by the underground working conditions and can be easily disassembled and assembled to realize the interchange of the left and right working surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the hydraulic support in the utility model;

[0015] Figure 2 yes Figure 1 Cross-section view in the AA direction;

[0016] Figure 3 This is a principle block diagram of the bidirectional lock safety valve of the utility model;

[0017] Figure 4 yes Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0018] In the figure: 1-top beam, 2-side push jack, 3-side guard plate, 4-installation sleeve, 40-guide groove, 5-top beam locking pin, 6-side guard plate locking pin, 7-process groove, 8-guide rod, 9-two-way lock safety valve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0021] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, a hydraulic support includes a top beam 1, side guard plates 3 arranged on both sides of the top beam 1 and a side thrust device, the side thrust device includes a side thrust jack 2, and the side thrust device also includes two mounting sleeves 4 and two guide rods 8, the two guide rods 8 are respectively mounted in the two mounting sleeves 4, and the two mounting sleeves 4 are respectively fixed to the top beam 1; the two guide rods 8 are arranged one-to-one with the two ends of the side thrust jack 2, one end of each guide rod 8 is hingedly connected to the corresponding end of the side thrust jack 2, and the other end of each guide rod 8 is detachably connected to the side guard plate 3 on the corresponding side; and each guide rod 8 is detachably connected to the top beam 1 through an anti-rotation component.

[0023] like Figure 4 As shown, in this embodiment, a side connecting pin hole is provided on each side of the side guard plate 3; a first pin hole is provided at the end of each guide rod 8 away from the side push jack 2; the side connecting pin hole and the first pin hole are detachably connected through the side guard plate locking pin 6, and the side guard plate locking pin 6 is extended horizontally.

[0024] like Figure 4 As shown, a top connecting pin hole is provided on the top beam 1; a second pin hole is provided on each guide rod 8; the top connecting pin hole and the second pin hole are connected by a top beam locking pin 5, and the top beam locking pin 5 is vertically extended. This top beam locking pin 5 locks the rotation direction of the guide rod 8, thereby ensuring that the side thrust jack 2 does not rotate, and the liquid inlet and return interface of the side thrust jack 2 can smoothly enter the guide groove 40 of the installation sleeve 4. That is, the anti-rotation component includes the top beam locking pin 5.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the hydraulic support of the utility model has two ends of the side push jack 2 detachably connected to the side guard plates 3 on both sides through two guide rods 8, and the two guide rods 8 are also detachably connected to the top beam 1, so that when the left and right working surfaces are interchanged, the connection between the guide rods 8 and the side guard plates 3 can be conveniently disassembled, specifically, the side guard plate lock pin 6 can be conveniently pulled out, that is, the guide rod 8 and the side guard plates 3 can be disassembled, and the connection between the top beam 1 and the guide rod 8 can be conveniently disassembled, specifically, the top beam lock pin 5 can be conveniently pulled out, that is, the guide rod 8 and the top beam 1 can be disassembled, and the side push device of the top beam 1 does not need to be disassembled, so that the left and right working surfaces can be adapted at the same time. In addition, the side push jack 2 can move to the left and right sides, and the side guard plate lock pin 6 that locks the guide rod 8 on one side can be removed as needed to realize the unilateral movement of the side push jack 2, thereby realizing the unilateral movement of the side guard plate 3.

[0026] Therefore, when the direction is changed, the utility model is not limited by the underground working conditions and can be easily disassembled and assembled to achieve the interchange of the left and right working surfaces. The utility model has the advantages of simple structure and convenient operation.

[0027] like Figure 3 As shown, the side thrust device also includes a two-way lock safety valve 9, which includes two linked one-way valves, one of which is arranged on the return liquid pipeline of the side thrust jack 2, and the other one-way valve is arranged on the inlet liquid pipeline of the side thrust jack 2.

[0028] The side push jack 2 of the utility model is connected by a two-way lock + safety valve (two-way lock safety valve 9), which ensures that the side guard plate 3 will not retract due to too little pressure during the interchange of the left and right working surfaces, and at the same time, the jack is retracted when the pressure is too high to protect the side push jack 2.

[0029] like Figure 2 As shown, the top beam 1 of the utility model is provided with main reinforcement, and a process groove 7 is provided on one side of the main reinforcement located at the bottom of the oil cylinder of the side thrust jack 2. The process groove 7 can avoid the side thrust device, thereby ensuring that no interference occurs when one end of the cylinder bottom of the side thrust jack 2 passes through the main reinforcement, thereby improving the reliability of the hydraulic support.

[0030] In a preferred embodiment, each mounting sleeve 4 is provided with a guide groove 40, and the extension direction of the guide groove 40 is the same as the extension direction of the guide rod 8, see Figure 4 , and the length of the guide groove 40 is greater than the stroke of the side push jack 2. The guide groove 40 has the same function as the process groove 7, and effectively avoids the side push jack 2, ensuring that the side push jack 2 works reliably.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made within the spirit and principle of the present invention, improvements of the same hydraulic support, etc., should be included in the protection scope of the present invention.

Claims

1. A hydraulic support, comprising a top beam, side guard plates arranged on both sides of the top beam and a side thrust device, wherein the side thrust device comprises a side thrust jack, characterized in that: The thrust device further comprises two mounting sleeves and two guide rods, the two guide rods are respectively mounted in the two mounting sleeves, and the two mounting sleeves are respectively fixed to the top beam; The two guide rods are arranged one-to-one with the two ends of the side push jack, one end of each guide rod is hingedly connected to the top of the corresponding side push jack, and the other end of each guide rod is detachably connected to the side guard plate on the corresponding side; Each of the guide rods is detachably connected to the top beam via an anti-rotation assembly.

2. The hydraulic support according to claim 1, characterized in that: The side thrust device also includes a two-way lock safety valve, which includes two linked one-way valves, one of which is arranged on the return liquid pipeline of the side thrust jack, and the other one-way valve is arranged on the inlet liquid pipeline of the side thrust jack.

3. The hydraulic support according to claim 1, characterized in that: The top beam is provided with a main rib, and the main rib is provided with a process groove on one side of the bottom of the oil cylinder of the side push jack.

4. The hydraulic support according to claim 1, characterized in that: A guide groove is provided on each of the mounting sleeves. The extending direction of the guide groove is the same as the extending direction of the guide rod, and the length of the guide groove is greater than the stroke of the side push jack.

5. The hydraulic support according to claim 1, characterized in that: The side guard plate on each side is provided with a side connecting pin hole; Each guide rod is provided with a first pin hole at one end away from the side thrust jack; The side connecting pin hole and the first pin hole are detachably connected via a side guard plate locking pin, and the side guard plate locking pin is horizontally extended.

6. The hydraulic support according to claim 1, characterized in that: The top beam is provided with a top connecting pin hole; Each of the guide rods is provided with a second pin hole; The top connecting pin hole and the second pin hole are connected by a top beam locking pin, and the top beam locking pin is vertically extended.

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