Mining telescopic single hydraulic prop

Abstract

The utility model discloses a mining telescopic monomer hydraulic prop, including hydraulic prop body and pressure gauge, and the inside communication of pressure gauge is passed through the soft rubber tube with hydraulic prop body, and the fixedly connected with the protection box of hydraulic prop body is set up on the protection box and is provided with the adjusting groove, and the inside sliding of adjusting groove is provided with the slide, and the side end fixedly connected with the sealing cover of slide is detachably installed on the pressure gauge, and the top fixedly connected with the top plate of sealing cover is provided with the clamping groove on both sides of the side end of top plate, and the top fixedly connected with the fixed block of protection box is provided with the sliding slot on the fixed block, and the inside sliding of sliding slot is provided with the sliding block, and the side end fixedly connected with the clamping column of sliding block is matched with the clamping groove, and the side end fixedly connected with the pull rod of sliding block is provided with the compression spring of the outside sleeve of pull rod, and the inside of protection box is pulled out with pressure gauge, and the pressure value on pressure gauge is observed, and the inside of protection box is pushed to pressure gauge, and the protection of pressure gauge can be carried out.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety production equipment technology, and more specifically, it relates to a single hydraulic prop for mining with opposing telescopic movements. Background Technology

[0002] Mining single hydraulic props can be used in conjunction with metal articulated roof beams for roof support in high-grade conventional mining and blasting face support, as well as for end support in fully mechanized mining faces. They can also be used independently as point pillars or other temporary supports. Currently, pressure gauges are often installed on single hydraulic props to protect them, because excessive pressure can easily damage the prop. However, most pressure gauges on hydraulic props are directly fixed to the prop, and damage to the gauge will affect the use of the prop.

[0003] A search revealed that Chinese utility model patent CN201721829404.7 discloses a mining-use counter-current telescopic pressure-displaying single hydraulic prop, comprising a hydraulic prop body, an installation groove on one side of the hydraulic prop body, and a pressure gauge installed in the installation groove. Rectangular grooves are formed on the top and bottom inner walls of the installation groove, and a first spring is welded to one inner wall of the rectangular groove. A stop block is welded to the end of the first spring near the pressure gauge, and the stop block is in contact with the pressure gauge. A movable hole is formed on one inner wall of the upper rectangular groove, and a fixing plate is welded to the side of the stop block away from the first spring, and the fixing plate is slidably connected to the movable hole. A first connecting plate and a second connecting plate are welded to one side of the hydraulic prop body.

[0004] When in use, pushing the pressure gauge moves the stop block, which in turn compresses the first spring. The upper stop block then moves the fixing plate, causing it to slide on the inner wall of the moving hole. The fixing plate then disengages from the fixing groove. Pushing the first handle moves the first moving plate, which slides on the inner wall of the vertical hole and engages in the placement groove. Rotating the shaft rotates the rotating plate. Releasing the second handle causes the second spring to push the pressure plate, which in turn moves the second moving plate, thus securing the pressure gauge and facilitating its replacement.

[0005] The pressure gauge is fixed inside the mounting groove by the first and second movable plates. Since the pressure gauge is fixed inside the mounting groove, and the first and second movable plates block one side of the mounting groove, it is not convenient for people to observe the pressure value on the pressure gauge. If there are gaps between the two sides of the first movable plate and the mounting groove, the pressure protection effect is poor. Utility Model Content

[0006] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a single hydraulic prop for mining with opposing telescopic movement, so as to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a mining counter-retractable single hydraulic prop, comprising a hydraulic prop body and a pressure gauge. The pressure gauge is connected to the interior of the hydraulic prop body via a flexible hose. A protective box is fixedly connected to the hydraulic prop body. An adjustment groove is provided on the protective box. A sliding plate is slidably arranged inside the adjustment groove. A sealing cover is fixedly connected to the side end of the sliding plate. The pressure gauge is detachably mounted on the sealing cover. A top plate is fixedly connected to the top of the sealing cover. Slots are provided on both sides of the side end of the top plate. A fixing block is fixedly connected to the top of the protective box. A sliding groove is provided on the fixing block. A slider is slidably arranged inside the sliding groove. A locking post that matches the slot is fixedly connected to the side end of the slider. A pull rod is fixedly connected to the side end of the slider. A compression spring is sleeved on the outside of the pull rod. The compression spring is located inside the sliding groove. Pulling the pressure gauge out from inside the protective box facilitates observation of the pressure value on the pressure gauge. Pushing the pressure gauge into the protective box provides protection for the pressure gauge.

[0008] The present invention is further configured such that the pull rod is slidably engaged with the fixed block, and a pull plate is fixedly connected to one end of the pull rod extending to the outside of the fixed block, so as to facilitate the movement of the pull rod.

[0009] The present invention is further configured such that the sealing cover is provided with a convex groove, a convex plate is slidably disposed inside the convex groove, a fixing frame is fixedly connected to the side end of the convex plate, the pressure gauge is inserted into the inside of the fixing frame, and a first screw for fixing the pressure gauge is threadedly connected to the fixing frame, which facilitates the disassembly and assembly of the pressure gauge.

[0010] The present invention is further configured such that a second screw that mates with the convex plate is threaded to the bottom end of the sealing cover to fix the convex plate.

[0011] The present invention is further configured such that a limiting groove communicating with the adjustment groove is provided on the side end of the protective box, and a limiting block is fixedly connected to the side end of the slide plate. The limiting block and the limiting groove slide together to limit the slide plate.

[0012] The present invention is further configured such that two baffles are symmetrically fixedly connected inside the protective box, which serve to fix the pressure gauge.

[0013] The present invention is further provided that sponge pads are fixedly connected to the side ends of the two baffles to increase the softness of the baffle surface.

[0014] The present invention is further provided that a pull handle is fixedly connected to the side end of the sealing cover, so as to facilitate pulling the pressure gauge out from the inside of the protective box.

[0015] (III) Beneficial Effects Compared with the prior art, this utility model provides a single hydraulic prop for mining with counter-current telescopic movement, which has the following beneficial effects: 1. Install the pressure gauge on the sealing cover. By sliding the sliding plate and adjusting groove together, push the sealing cover to move and push the pressure gauge into the protective box. The sealing cover then seals the protective box. A compression spring pushes the slider and locking pin to move, allowing the locking pin to insert into the locking groove and fix the top plate and sealing cover. This makes it easier to store the pressure gauge inside the protective box and improves the protection effect of the pressure gauge.

[0016] 2. By pulling the pull plate, the pull rod, slider, and locking pin are moved to separate the locking pin from the locking groove. Then, the sealing plate and pressure gauge are pulled outward to move the pressure gauge to the outside of the protective box, making it easier for people to observe the pressure value on the pressure gauge.

[0017] 3. Insert the pressure gauge into the fixed frame and fix it by tightening the first screw. Then insert the convex plate into the convex groove and install the convex plate and pressure gauge on the sealing cover to facilitate the disassembly and replacement of the pressure gauge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of the mining counter-extension single hydraulic prop of this utility model; Figure 2 This is a structural diagram showing the connection between the hydraulic support body, protective box, and baffle in this utility model; Figure 3 This is a structural diagram showing the assembly of the sealing plate, convex plate, fixing frame, and pressure gauge in this utility model. Figure 4 This is a structural diagram showing the connection between the sealing plate, top plate, sliding plate, and limiting block in this utility model. Figure 5 This is a structural diagram showing the combination of the fixing block, slider, locking pin, pull rod, and compression spring in this utility model.

[0019] In the diagram: 1. Hydraulic support body; 2. Pressure gauge; 3. Flexible hose; 4. Protective box; 5. Adjustment groove; 6. Slide plate; 7. Sealing cover; 8. Top plate; 9. Slot; 10. Fixing block; 11. Slide groove; 12. Slider; 13. Locking post; 14. Pull rod; 15. Compression spring; 16. Pull plate; 17. Convex groove; 18. Convex plate; 19. Fixing frame; 20. First screw; 21. Second screw; 22. Limiting groove; 23. Limiting block; 24. Baffle; 25. Sponge pad; 26. Pull handle. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] Please see Figures 1-5 A single, retractable hydraulic prop for mining includes a hydraulic prop body 1 and a pressure gauge 2. The pressure gauge 2 is connected to the interior of the hydraulic prop body 1 via a flexible hose 3. A protective box 4 is fixedly connected to the hydraulic prop body 1. The protective box 4 has an adjustment groove 5, and a sliding plate 6 is slidably mounted inside the adjustment groove 5. A limiting groove 22 communicating with the adjustment groove 5 is provided on the side end of the protective box 4. A limiting block 23 is fixedly connected to the side end of the sliding plate 6. The limiting block 23 slides and engages with the limiting groove 22 to limit the sliding plate 6. A sealing cover 7 is fixedly connected to the side end of the sliding plate 6, and a pull handle 26 is fixedly connected to the side end of the sealing cover 7 to facilitate pulling the pressure gauge 2 out of the interior of the protective box 4. The pressure gauge 2 is detachably mounted on the sealing cover 7. Two baffles 24 are symmetrically fixedly connected inside the protective box 4. The pressure gauge 2 is fixed. The two baffles 24 are fixedly connected to the side ends of the sponge pads 25 to increase the softness of the surface of the baffles 24. The top of the sealing cover 7 is fixedly connected to the top plate 8. The top of the top plate 8 is provided with slots 9 on both sides. The top of the protective box 4 is fixedly connected to the top of the fixed block 10. The fixed block 10 is provided with a sliding groove 11. The sliding block 12 is slidably arranged inside the sliding groove 11. The side end of the sliding block 12 is fixedly connected to a locking post 13 that matches the slot 9. The side end of the sliding block 12 is fixedly connected to a pull rod 14. The outside of the pull rod 14 is fitted with a compression spring 15. The compression spring 15 is located inside the sliding groove 11. The pull rod 14 slides with the fixed block 10. The end of the pull rod 14 that extends to the outside of the fixed block 10 is fixedly connected to a pull plate 16 to facilitate the movement of the pull rod 14.

[0024] Specifically, pressure gauge 2 is installed on sealing cover 7. The sliding plate 6 and adjusting groove 5 are engaged to push sealing cover 7 to move, pushing pressure gauge 2 into the protective box 4 and sealing the protective box 4 with sealing cover 7. Compression spring 15 pushes slider 12 and locking post 13 to move, so that locking post 13 is inserted into the locking groove 9, fixing top plate 8 and sealing cover 7. This makes it easy to store pressure gauge 2 inside the protective box 4, improving the protection effect of pressure gauge 2. Pulling plate 16 pulls pull rod 14, slider 12 and locking post 13 to move, so that locking post 13 is separated from locking groove 9. Then, the sealing plate and pressure gauge 2 are pulled to the outside of the protective box 4, making it easy for people to observe the pressure value on pressure gauge 2.

[0025] Please see Figure 3 The sealing cover 7 is provided with a convex groove 17, and a convex plate 18 is slidably disposed inside the convex groove 17. A fixing frame 19 is fixedly connected to the side end of the convex plate 18. The pressure gauge 2 is inserted into the inside of the fixing frame 19. A first screw 20 for fixing the pressure gauge 2 is threadedly connected to the fixing frame 19, which facilitates the disassembly and assembly of the pressure gauge 2. A second screw 21 that mates with the convex plate 18 is threadedly connected to the bottom end of the sealing cover 7 to fix the convex plate 18.

[0026] Specifically, the pressure gauge 2 is inserted into the fixed frame 19 and fixed by tightening the first screw 20. Then, the convex plate 18 is inserted into the convex groove 17 and fixed by tightening the second screw 21, thereby installing the pressure gauge 2 on the sealing cover 7. The second screw 21 is loosened and the convex plate 18 is pulled out from the convex groove 17. Then, the first screw 20 is loosened and the pressure gauge 2 is pulled out from the fixed frame 19, thereby disassembling the pressure gauge 2 and facilitating its disassembly and replacement.

[0027] In summary, when using the overall equipment: Pressure gauge 2 is installed on sealing cover 7. The sliding plate 6 slides into adjustment groove 5, pushing sealing cover 7 to move pressure gauge 2 into protective box 4 and sealing cover 7 to seal protective box 4. Compression spring 15 pushes slider 12 and locking pin 13 to move, so that locking pin 13 is inserted into locking groove 9, fixing top plate 8 and sealing cover 7, thus storing pressure gauge 2 inside protective box 4. At this time, the side end of baffle 24 contacts the side end of pressure gauge 2, fixing pressure gauge 2. Pulling plate 16 pulls pull rod 14, slider 12 and locking pin 13 to move, so that locking pin 13 is separated from locking groove 9. Then pull sealing plate and pressure gauge 2 to move outward, pulling pressure gauge 2 to the outside of protective box 4, so that people can observe the pressure value on pressure gauge 2.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A single hydraulic prop for mining, comprising a hydraulic prop body (1) and a pressure gauge (2), wherein the pressure gauge (2) is connected to the interior of the hydraulic prop body (1) via a flexible hose (3), characterized in that: A protective box (4) is fixedly connected to the hydraulic support body (1). An adjustment groove (5) is provided on the protective box (4). A sliding plate (6) is slidably provided inside the adjustment groove (5). A sealing cover (7) is fixedly connected to the side end of the sliding plate (6). The pressure gauge (2) is detachably installed on the sealing cover (7). A top plate (8) is fixedly connected to the top of the sealing cover (7). A slot (9) is provided on both sides of the side end of the top plate (8). A fixing block (10) is fixedly connected to the top of the protective box (4). A sliding groove (11) is provided on the fixing block (10). A slider (12) is slidably provided inside the sliding groove (11). A locking post (13) that matches the slot (9) is fixedly connected to the side end of the slider (12). A pull rod (14) is fixedly connected to the side end of the slider (12). A compression spring (15) is sleeved on the outside of the pull rod (14). The compression spring (15) is located inside the sliding groove (11).

2. The retractable single tubular hydraulic prop for mining as claimed in claim 1, characterized in that: The pull rod (14) is slidably engaged with the fixing block (10), and a pull plate (16) is fixedly connected to one end of the pull rod (14) extending to the outside of the fixing block (10).

3. The retractable single hydraulic prop for mining as claimed in claim 1, characterized in that: The sealing cover (7) is provided with a convex groove (17), and a convex plate (18) is slidably provided inside the convex groove (17). A fixing frame (19) is fixedly connected to the side end of the convex plate (18). The pressure gauge (2) is inserted into the inside of the fixing frame (19). A first screw (20) for fixing the pressure gauge (2) is threadedly connected to the fixing frame (19).

4. The retractable single hydraulic prop for mining as claimed in claim 3, characterized in that: The bottom end of the sealing cap (7) is threaded with a second screw (21) that mates with the convex plate (18).

5. The mining counter-current telescopic single hydraulic prop according to claim 1, characterized in that: The protective box (4) is provided with a limiting groove (22) that communicates with the adjustment groove (5) on its side end. The sliding plate (6) is fixedly connected to a limiting block (23), and the limiting block (23) slides in cooperation with the limiting groove (22).

6. The mining counter-current telescopic single hydraulic prop according to claim 1, characterized in that: The protective box (4) has two baffles (24) symmetrically fixedly connected inside.

7. The mining counter-current telescopic single hydraulic prop according to claim 6, characterized in that: Sponge pads (25) are fixedly connected to the side ends of the two baffles (24).

8. The mining counter-current telescopic single hydraulic prop according to claim 1, characterized in that: A handle (26) is fixedly connected to the side end of the sealing cap (7).

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