Novel mining intelligent hydraulic support high-pressure valve element taking-out tool

Abstract

The utility model discloses a mining novel intelligent hydraulic support high-pressure valve element taking-out tool, and relates to the technical field of hydraulic supports. The mining novel intelligent hydraulic support high-pressure valve element taking-out tool comprises a liquid return valve element taking-out tool and a liquid inlet valve element taking-out tool; the liquid return valve element taking-out tool comprises two tensioning ends with the tail end axes crossed, connecting sections used for being connected with the other ends of the two tensioning ends and a holding part used for being held by hand and extending out of the connecting sections, the connecting sections of the two tensioning ends are connected through a shaft, and the two tensioning ends are opened and closed outwards around the axis between the connecting sections through stress of the holding part to tension and detach the liquid return valve element. The liquid inlet valve element taking-out tool comprises a bolt matched with the liquid inlet valve element screw hole, the bolt is connected with the liquid inlet valve element screw hole, and the liquid inlet valve element and the liquid inlet valve sleeve are separated from the valve body by applying pulling force to the bolt. According to the invention, the difficulty in disassembling the sealing ring and the sealing surface for checking the liquid inlet valve core and the liquid return valve core is solved, the buffer structure of the liquid return valve core taking-out tool is adopted for the valve core in non-threaded connection, so that the inner wall can be prevented from being scratched, and the damage rate of a checked main body during maintenance is reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic support technology, specifically to a tool for removing the high-pressure valve core of a hydraulic support during maintenance. Background Technology

[0002] The high-pressure valve of the new intelligent hydraulic support for mining is a high-end hydraulic control device specifically designed for the complex environment of underground mines. When there is fluid leakage (i.e., hidden leakage) in the internal hydraulic system of the high-pressure valve core of the intelligent hydraulic support, it is extremely difficult to find the specific fault point, and unlike traditional manual valves, it cannot be disassembled and replaced piece by piece. For intelligent hydraulic supports where the fault point cannot be found, the only option is to replace the entire expensive, integrally cast valve assembly.

[0003] Through repeated disassembly of the damaged high-pressure valve core, it was found that the main cause of fluid leakage inside the valve seat was damage to the return valve sleeve embedded in the end cover or a reduction in the sealing performance of the inlet valve seal. This resulted in poor sealing between the hydraulic inlet and return chambers, reduced support capacity, and fluid leakage faults in the internal hydraulic system of the valve body. However, the troubleshooting steps are mainly as follows:

[0004] The existing intelligent hydraulic support high-pressure valve has a tightly wrapped contact between the end cap return valve sleeve and the return valve core through a sealing ring, making it impossible to separate the end cap return valve sleeve and the return valve core. This makes it inconvenient to inspect the return sealing ring and whether the sealing surface is scratched. The inlet valve sleeve and the inlet valve core are located inside the small and deep valve hole of the valve group. Tools that are usually placed into the valve hole cannot clamp the inlet valve core, and tools that can clamp the inlet valve core cannot be placed into the valve hole. This creates a technical blind spot for maintenance, making the maintenance and production tasks of the coal mining face quite passive. Summary of the Invention

[0005] The purpose of this invention is to provide a new type of intelligent hydraulic support high-pressure valve core removal tool for mining, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a new type of intelligent hydraulic support high-pressure valve core removal tool for mining, comprising: a return valve core removal fixture and an inlet valve core removal fixture movably connected to the return valve core removal fixture;

[0007] The return valve core removal tool includes: two tensioning ends with intersecting end axes, a connecting section for connecting the other ends of the two tensioning ends, and a gripping part extending from the connecting section for hand use. The connecting sections of the two tensioning ends are axially connected. The two tensioning ends are opened and closed outward around the axis between the connecting sections by the gripping part to disassemble the return valve core.

[0008] The tooling for removing the inlet valve core includes: a bolt adapted to the screw hole of the inlet valve core, the bolt being connected to the screw hole of the inlet valve core, and applying a pulling force to the bolt to separate the inlet valve core and the inlet valve sleeve from the valve body.

[0009] Preferably, the ends of the two tensioning ends are bent outwards, and a buffer structure is provided at the bend to contact the inner wall of the return valve core.

[0010] Preferably, the buffer structure includes a buffer body, which is connected to the tension end bend by a tension spring. The buffer body extends a slider towards the tension end bend, and the buffer body moves linearly by sliding the slider in the groove at the tension end bend.

[0011] Preferably, the contact surface between the buffer body and the inner wall of the return valve core is further provided with a buffer pad.

[0012] Preferably, a return spring is installed between the two connecting segments, and the return spring is located on the side of the connecting segment shaft connection near the gripping part.

[0013] Preferably, the return valve core removal fixture and the inlet valve core removal fixture are connected by a movable connecting ring with universal degrees of freedom. The inlet valve core removal fixture is also provided with a nut, and the bolt passes through the movable connecting ring and is connected and limited by the nut.

[0014] Preferably, the grip portion is also provided with an anti-slip sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention solves the problem of disassembling the sealing rings and sealing surfaces of the inlet and outlet valve cores by using a return valve core removal tool in conjunction with an inlet valve core removal tool. It can eliminate hidden faults in the intelligent hydraulic support in all directions without blind spots. At the same time, the return valve core removal tool and the inlet valve core removal tool are integrated into one unit, which is convenient for operation and carrying. For valve cores with non-threaded connections, the buffer structure of the return valve core removal tool can prevent scratches on the inner wall and reduce the damage rate of the inspected body during maintenance. Attached Figure Description

[0017] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of a high-pressure valve core removal tool for a novel intelligent hydraulic support in mining according to the present invention;

[0019] Figure 2 This is a schematic diagram of the tensioning end structure of a high-pressure valve core removal tool for a novel intelligent hydraulic support in mining according to the present invention;

[0020] Figure 3 This is an exploded disassembly diagram of the buffer structure for removing the high-pressure valve core of a novel intelligent hydraulic support for mining, according to the present invention.

[0021] Figure 4 This is an exploded disassembly diagram of the connecting section and gripping part of a high-pressure valve core removal tool for a novel intelligent hydraulic support for mining according to the present invention.

[0022] Figure 5 This is a schematic diagram of a high-pressure valve core removal tool for a novel intelligent hydraulic support for mining, according to the present invention.

[0023] In the diagram: 1. Bolt; 2. Tensioning end; 3. Connecting section; 4. Grip part; 5. Buffer structure; 51. Buffer body; 52. Tensioning spring; 53. Slider; 54. Slide groove; 55. Buffer pad; 6. Return spring; 7. Movable connecting ring; 8. Nut; 9. Anti-slip sleeve. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-5 A new type of intelligent hydraulic support for mining, comprising: a return valve core removal tool and an inlet valve core removal tool movably connected to the return valve core removal tool;

[0026] like Figure 1 As shown, the tooling for removing the return valve core includes:

[0027] Two tensioning ends 2 with intersecting end axes, a connecting section 3 for connecting the other ends of the two tensioning ends 2, and a gripping part 4 extending from the connecting section 3 for hand use. The connecting section 3 of the two tensioning ends 2 is axially connected. The two tensioning ends 2 are opened and closed outward around the axis between the connecting section 3 by the gripping part 4 to disassemble the tensioning return valve core.

[0028] like Figure 1 As shown, the tooling for removing the inlet valve core includes:

[0029] Bolt 1 is adapted to the screw hole of the inlet valve core. Bolt 1 is connected to the screw hole of the inlet valve core. Applying tension to bolt 1 separates the inlet valve core and inlet valve sleeve from the valve body.

[0030] As a further improvement: such as Figure 2As shown, the two tension ends 2 are bent outwards, and a buffer structure 5 is provided at the bend to contact the inner wall of the return valve core.

[0031] In specific implementation, combined with Figure 2 and Figure 3 As shown, the buffer structure 5 includes a buffer body 51, which is connected to the bend of the tension end 2 by a tension spring 52. The buffer body 51 extends a slider 53 to the bend of the tension end 2. The slider 53 slides in the groove 54 at the bend of the tension end 2, causing the buffer body 51 to move linearly. The tension spring 52 provides tension between the buffer body 51 and the inner wall of the return valve core, and also provides a certain buffer when the buffer body 51 contacts the inner wall, thus protecting the return valve core and preventing scratches on its surface.

[0032] It should be noted that the tension spring 52, as a connecting part at the bend of the buffer body 51 and the tension end 2, can be connected by gluing the two ends of the tension spring 52 to the buffer body 51 and the tension end 2, or by snapping the two ends together. However, it is not limited to the above two solutions. In practical applications, those skilled in the art can also use other technical means to achieve the connection.

[0033] The contact surface between the buffer body 51 and the inner wall of the return valve core is also provided with a buffer pad 55 to prevent scratches on the surface of the return valve core when performing the hooking operation.

[0034] As a further improvement: such as Figure 4 As shown, a return spring 6 is installed between the two connecting sections 3. The return spring 6 is located on the side of the connecting section 3 shaft connection near the grip part 4, so that the two tensioned ends 2 can remain closed before entering the return valve core, ensuring the minimum end diameter size. At the same time, it can quickly reset after the user releases the grip part 4, providing convenience for the next operation.

[0035] As a further improvement: such as Figure 4 As shown, the grip part 4 is also provided with an anti-slip sleeve 9.

[0036] It should be noted that: such as Figure 5 As shown, the return valve core removal tool and the inlet valve core removal tool are connected by a movable connecting ring 7 with universal degrees of freedom. The inlet valve core removal tool is also equipped with a nut 8. The bolt 1 passes through the movable connecting ring 7 and is connected and limited by the nut 8, so that the return valve core removal tool and the inlet valve core removal tool are integrated into one piece, which is convenient for operation and carrying.

[0037] As for the materials of the anti-slip sleeve 9 and the buffer pad 55, rubber, silicone and other materials with certain buffering effects can be used, but they are not limited to the above. Those skilled in the art can make appropriate settings according to actual needs, which will not be elaborated in detail here.

[0038] When disassembling the return valve core, the user applies force to the gripping part 4 of the return valve core removal tool. The two tensioning ends 2 move outward in a circular motion around the axis of the connecting section 3. The buffer pad 55 on the buffer body 51 on the two tensioning ends 2 abuts against the top of the return valve core embedded in the end cover, hooks the return valve core, and removes it. The return sealing ring and sealing surface are then inspected.

[0039] When disassembling the inlet valve core, the bolt 1 of the inlet valve core removal tool is screwed into the center of the inlet valve core. The user applies force to remove and separate the inlet valve core and inlet valve sleeve, so as to facilitate the inspection of the inlet sealing ring and sealing surface. This overcomes the problem of disassembling the sealing ring and sealing surface of the inlet and return valve cores. It can eliminate hidden faults of intelligent hydraulic supports in all directions without blind spots. Through the technological innovation of this invention, the idea of ​​"replacing with replacement" is adjusted to the solution of "repairing with replacement" by accurately finding the fault point, which greatly reduces the investment and operation risk of hydraulic support maintenance personnel and improves the maintenance efficiency of intelligent hydraulic supports.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A new intelligent hydraulic support high-pressure valve core extraction tool for mining, characterized by, The utility model relates to a back liquid valve core taking-out tool and a liquid inlet valve core taking-out tool movably connected to the back liquid valve core taking-out tool. The back liquid valve core taking-out tool comprises two tensioning ends (2) with intersecting terminal axes, a connecting section (3) for connecting the other ends of the two tensioning ends (2), and a holding part (4) extending from the connecting section (3) for hand holding, the connecting section (3) between the two tensioning ends (2) is axially connected, and the two tensioning ends (2) are opened and closed outward around the axis between the connecting section (3) under the force of the holding part (4) to tension the back liquid valve core for disassembly. The liquid inlet valve core taking-out tool comprises a bolt (1) matched with the liquid inlet valve core screw hole, the bolt (1) is connected with the liquid inlet valve core screw hole, and the liquid inlet valve core and the liquid inlet valve sleeve are separated from the valve body by applying pulling force to the bolt (1). The ends of the two tensioning ends (2) are outwardly bent, and a buffer structure (5) in contact with the inner wall of the back liquid valve core is arranged at the bent part.

2. The novel intelligent hydraulic support high-pressure valve core extraction tool for mine according to claim 1, characterized in that: The buffer structure (5) comprises a buffer main body (51), the buffer main body (51) is connected with the bent part of the tensioning end (2) through a tensioning spring (52), the buffer main body (51) extends a sliding block (53) to the bent part of the tensioning end (2), and linear motion of the buffer main body (51) is realized through sliding of the sliding block (53) in a sliding groove (54) at the bent part of the tensioning end (2).

3. The novel intelligent hydraulic support high-pressure valve core extraction tool for mine according to claim 2, characterized in that: The buffer main body (51) is further provided with a buffer pad (55) in contact with the inner wall of the back liquid valve core.

4. The novel intelligent hydraulic support high-pressure valve core extraction tool for mine of claim 3, characterized in that: A reset spring (6) is arranged between the two connecting sections (3), and the reset spring (6) is located on the side of the connecting section (3) close to the holding part (4) in the axial connection.

5. The novel intelligent hydraulic support high-pressure spool extraction tool for mines according to claim 1, characterized in that: A reset spring (6) is arranged between the two connecting sections (3), and the reset spring (6) is located on the side of the connecting section (3) close to the holding part (4) in the axial connection.

6. The novel intelligent hydraulic support high-pressure spool extraction tool for mines according to claim 4, characterized in that: The back liquid valve core taking-out tool and the liquid inlet valve core taking-out tool are movably connected through a universal free degree movable connecting ring (7), the liquid inlet valve core taking-out tool is further provided with a nut (8), the bolt (1) passes through the movable connecting ring (7) and is connected and limited by the nut (8).

7. The novel intelligent hydraulic support high-pressure spool extraction tool for mines according to any one of claims 1-6, characterized in that: The holding part (4) is further provided with an anti-skid sleeve (9).

8. The novel intelligent hydraulic support high-pressure spool extraction tool for mines according to any one of claims 1-6, characterized in that: The holding part (4) is further provided with an anti-skid sleeve (9).

9. The new intelligent hydraulic support high-pressure spool puller for mine of claim 7, characterized in that: ​

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