A hydraulic support gangue blocking device

Abstract

The utility model discloses a kind of hydraulic support gangue blocking devices, including hydraulic gangue blocking support, the hydraulic gangue blocking support is provided with hydraulic rod, fixed ring one is fixedly sleeved on the hydraulic rod, fixed ring two is fixedly sleeved on the telescopic end of hydraulic rod, fixed ring one and fixed ring two are connected with blocking structure and support structure, blocking structure is connected with positioning plug block;The utility model, blocking structure adopts the combination form of corrugated flexible pipe one and corrugated flexible pipe two, cooperates with the linkage of sleeve ring one and sleeve ring two, can be synchronous telescopic with the telescopic action of hydraulic rod, form continuous protective layer, can effectively block the direct impact of small gangue on hydraulic rod, wear and tear, improve the blocking range, simultaneously, the support slide bar of staggered arrangement in support structure provides rigid guide for corrugated flexible pipe, limit the stretching degree of corrugated flexible pipe, avoid that corrugated flexible pipe is stretched too long, further guarantee the stability and protection reliability of blocking structure.

Description

Technical Field

[0001] This utility model relates to the field of rock-blocking support technology, specifically a hydraulic support rock-blocking device. Background Technology

[0002] Rockfall protection supports are key protective and support equipment for fully mechanized mining and longwall mining faces in coal mines. Their core function is to block rockfalls and coal blocks falling from the goaf or roadway sidewalls during the mining process. At the same time, they assist hydraulic supports in forming a stable working space, ensuring the safe operation of underground mining equipment and the personal safety of workers. They are an important support device for maintaining the normal production order of the working face.

[0003] Chinese Patent Publication No. CN222716925U discloses a hydraulic support rock-blocking device, belonging to the field of hydraulic support technology. This hydraulic support rock-blocking device includes a hydraulic support and a rock-blocking mechanism. The rock-blocking mechanism includes a mounting base disposed on the bottom side of the hydraulic support. A first baffle is rotatably connected inside the mounting base, and a second baffle is slidably mounted inside the first baffle. A storage groove is formed on one side of the upper end of the second baffle, and a third baffle is rotatably connected inside the storage groove. Observation ports are formed on both sides of the first baffle, and the pair of observation ports are located on the same horizontal line. Tempered glass is installed inside each observation port. A transmission cavity is formed on one side of the mounting base, and one end of the first baffle extends into the transmission cavity and is fitted with a first bevel gear. This utility model can effectively improve the practicality of the hydraulic support rock-blocking device and has high practical value.

[0004] In the aforementioned prior art, the protection range of the hydraulic rod by the rock-blocking support is limited. Parts of the hydraulic rod, especially the telescopic end, are exposed. The exposed parts are easily contacted and impacted by small rocks, dust and other impurities, causing wear on the surface of the hydraulic cylinder and affecting the service life of the hydraulic rod.

[0005] Therefore, it is necessary to propose a hydraulic support rock-blocking device to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0006] The purpose of this utility model is to provide a hydraulic support rock-blocking device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic support rock-blocking device, comprising a hydraulic rock-blocking support, wherein a hydraulic rod is provided on the hydraulic rock-blocking support, a first fixing ring is fixedly sleeved on the hydraulic rod, a second fixing ring is fixedly sleeved on the telescopic end of the hydraulic rod, a guard structure and a support structure are connected to the first fixing ring and the second fixing ring, a positioning block is connected to the guard structure, and a limit structure is connected to the positioning block.

[0008] Preferably, the guard structure includes a collar 1, which is detachably installed on one side of a fixed ring 2. Corrugated telescopic tubes 1 are installed on the sides of the collar 1 and the fixed ring 1 that are close to each other. Collars 2 are installed on both of the two corrugated telescopic tubes 1. The same corrugated telescopic tube 2 is installed between the two collars 2. Collars 1, corrugated telescopic tubes 1, collars 2 and corrugated telescopic tubes 2 are all movably sleeved on the hydraulic rod.

[0009] Preferably, the support structure includes several support slide rods, with a first fixed ring and two second collars respectively installed on the corresponding support slide rods. Both the first collar and the second collar have limit sliding holes inside, and the support slide rods are slidably installed in the corresponding limit sliding holes.

[0010] Preferably, a stop is installed at one end of the support slide rod.

[0011] Preferably, the limiting structure includes a positioning groove, which is formed inside the second fixing ring, and a positioning block is inserted into the positioning groove and installed on one side of the first collar.

[0012] Preferably, a fixed shaft is installed on the inner wall of the positioning block, and a movable stop is rotatably sleeved on the fixed shaft, with the movable stop contacting one side of the second fixed ring.

[0013] Preferably, one end of the torsion spring is installed on the inner wall of the movable stop, and the other end of the torsion spring is installed on the fixed shaft, with the torsion spring sleeved on the fixed shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) In this utility model, the protective structure adopts a combination of corrugated telescopic tube one and corrugated telescopic tube two. With the linkage of collar one and collar two, it can extend and retract synchronously with the extension and retraction of the hydraulic rod to form a continuous protective layer. It can effectively block the direct impact and wear of small gangue on the hydraulic rod, and improve the protection range. At the same time, the support slide rods arranged in the support structure provide rigid guidance for the corrugated telescopic tube, limit the extension degree of the corrugated telescopic tube, and avoid the corrugated telescopic tube from being stretched too long, further ensuring the stability and protection reliability of the protective structure.

[0016] (2) In normal operation, the positioning block is inserted into the positioning groove to achieve initial positioning. The elastic force of the torsion spring makes the movable stop bar fit tightly against the two sides of the fixed ring to form a stable lock. When the hydraulic rod needs to be repaired, the lock can be released by simply flipping the movable stop bar. Pushing the collar can retract the guard structure to expose the hydraulic rod without disassembling the entire protective component. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the corrugated expansion tube structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the collar structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the collar structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the movable stop bar of this utility model;

[0022] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] Explanation of icon numbers:

[0024] 100. Hydraulic rock retainer support; 101. Hydraulic rod; 200. Fixing ring one; 201. Fixing ring two; 202. Collar one; 203. Corrugated telescopic tube one; 204. Collar two; 205. Corrugated telescopic tube two; 300. Support slide rod; 301. Limiting slide hole; 302. Stop block; 400. Positioning insert; 401. Positioning groove; 402. Fixed shaft; 403. Movable stop bar; 404. Torsion spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a hydraulic support rock-blocking device, including a hydraulic rock-blocking support 100, a hydraulic rod 101 is provided on the hydraulic support 100, a fixing ring 200 is fixedly sleeved on the hydraulic rod 101, a fixing ring 201 is fixedly sleeved on the telescopic end of the hydraulic rod 101, a guard structure and a support structure are connected to the fixing ring 200 and the fixing ring 201, a positioning block 400 is connected to the guard structure, and a limit structure is connected to the positioning block 400.

[0027] When the hydraulic support rock-blocking device of this embodiment is working, the hydraulic rod 101 moves synchronously with the fixed ring 201 as it extends and retracts. The blocking structure extends and retracts under the action of the fixed ring 200 and the fixed ring 201, thereby achieving dynamic blocking of the hydraulic rod 101. The support structure guides and limits the extension and retraction of the blocking structure to prevent it from being overstretched or deviated, thus ensuring the stability of the rock-blocking effect.

[0028] Furthermore, the guard structure includes a collar 202, which is detachably installed on one side of a fixed ring 201. Corrugated telescopic tubes 203 are installed on the sides of the collar 202 and the fixed ring 200 that are close to each other. A collar 204 is installed on each of the two corrugated telescopic tubes 203. A corrugated telescopic tube 205 is installed between the two collars 204. The collar 202, the corrugated telescopic tube 203, the collar 204, and the corrugated telescopic tube 205 are all movably sleeved on the hydraulic rod 101.

[0029] The coordinated arrangement of corrugated telescopic tube 1 203 and corrugated telescopic tube 205 provides protection for the hydraulic rod 101. When the hydraulic rod 101 extends or retracts, the fixed ring 201 drives the collar 1 202 to move accordingly. The collar 1 202 pulls the corrugated telescopic tube 1 203 on one side to extend or retract. The corrugated telescopic tube 1 203 drives the corresponding collar 2 204 to move, which in turn drives the corrugated telescopic tube 2 205 to extend or retract. The corrugated telescopic tube 1 203 on the other side adapts and deforms synchronously. The entire protective structure forms a continuous telescopic protective layer that can cover the extension and retraction stroke of the hydraulic rod 101, effectively blocking the direct impact and wear of small stones on the hydraulic rod 101.

[0030] Furthermore, the support structure includes several support slide rods 300, a first fixed ring 200 and two second collars 204 are respectively installed on the corresponding support slide rods 300, and a limiting slide hole 301 is opened inside the first collar 202 and the second collar 204. The support slide rods 300 are slidably installed in the corresponding limiting slide holes 301, and a stop block 302 is installed at one end of the support slide rod 300.

[0031] When the protective structure expands and contracts, collar one 202 and collar two 204 slide on the support slide rod 300 through the limiting sliding hole 301. The rigid structure of the support slide rod 300 can reduce the lateral displacement of the corrugated expansion tube one 203 and the corrugated expansion tube two 205 due to force. Each set of support slide rods 300 is staggered to avoid interference during expansion and contraction. The stop block 302 can prevent collar one 202 or collar two 204 from loosening from the corresponding support slide rod 300, ensuring structural stability, and at the same time limiting the stretching degree of the corrugated expansion tube to prevent the corrugated expansion tube from being stretched too long.

[0032] Example 2: Figure 2-5In order to quickly expose the hydraulic rod 101 from the corrugated telescopic tube when it is being inspected, a limiting structure is arranged. The limiting structure includes a positioning groove 401, which is opened inside the fixing ring 201. A positioning block 400 is inserted into the positioning groove 401 and is installed on one side of the collar 202.

[0033] In this embodiment, the limiting structure and the guard structure work together. The core function is to enable quick assembly and disassembly between the collar 202 and the fixed ring 201. During normal operation, the limiting structure securely connects the collar 202 and the fixed ring 201, ensuring the integrity of the guard structure. When maintenance is required, the limiting structure can be quickly released, pushing the collar 202 to retract and exposing the hydraulic rod 101. After maintenance is completed, it can be quickly reset and fixed.

[0034] Furthermore, a fixed shaft 402 is installed on the inner wall of the positioning insert 400, and a movable stop 403 is rotatably sleeved on the fixed shaft 402. The movable stop 403 is in contact with one side of the fixed ring 201. One end of a torsion spring 404 is installed on the inner wall of the movable stop 403, and the other end of the torsion spring 404 is installed on the fixed shaft 402. The torsion spring 404 is sleeved on the fixed shaft 402.

[0035] When the hydraulic rod 101 needs maintenance or lubrication, the two movable stop levers 403 are flipped. The movable stop levers 403 rotate around the fixed shaft 402 and compress the torsion spring 404. At the same time, the rotating movable stop levers 403 are released from the obstruction of one side of the fixed ring 201 and correspond to the position of the positioning groove 401, thus releasing the connection restriction between the collar 1 202 and the fixed ring 201. At this time, the collar 1 202 can be pushed alone to retract the protective structure and expose the hydraulic rod 101. When installing after maintenance, the collar 1 202 is pushed to contact the fixed ring 201, which drives the positioning block 400 to be inserted into the positioning groove 401 to achieve initial positioning. Then the movable stop levers 403 are released, and the compressed torsion spring 404 releases its elastic force to drive the movable stop levers 403 to flip and reset. The movable stop levers 403 block the side of the fixed ring 201 again, realizing a stable connection between the fixed ring 201 and the collar 1 202, ensuring that the protective structure returns to its working state.

[0036] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hydraulic support rock-blocking device, comprising a hydraulic rock-blocking support (100), wherein a hydraulic rod (101) is provided on the hydraulic rock-blocking support (100), characterized in that: A fixing ring 1 (200) is fixedly sleeved on the hydraulic rod (101), and a fixing ring 2 (201) is fixedly sleeved on the telescopic end of the hydraulic rod (101). A guard structure and a support structure are connected to the fixing ring 1 (200) and the fixing ring 2 (201). A positioning block (400) is connected to the guard structure, and a limit structure is connected to the positioning block (400).

2. The hydraulic support rock-blocking device according to claim 1, characterized in that: The protective structure includes a collar one (202), which is detachably installed on one side of a fixed ring two (201). Corrugated telescopic tube one (203) is installed on the side of the collar one (202) and the fixed ring one (200) that are close to each other. A collar two (204) is installed on each of the two corrugated telescopic tubes one (203). The same corrugated telescopic tube two (205) is installed between the two collars two (204). The collar one (202), the corrugated telescopic tube one (203), the collar two (204) and the corrugated telescopic tube two (205) are all movably sleeved on the hydraulic rod (101).

3. The hydraulic support rock-blocking device according to claim 1, characterized in that: The support structure includes several support slide rods (300), a fixing ring one (200) and two collar two (204) are respectively installed on the corresponding support slide rods (300), and a limiting slide hole (301) is opened inside the collar one (202) and the collar two (204), and the support slide rod (300) is slidably installed in the corresponding limiting slide hole (301).

4. A hydraulic support rock-blocking device according to claim 3, characterized in that: A stop (302) is installed at one end of the support slide rod (300).

5. A hydraulic support rock-blocking device according to claim 1, characterized in that: The limiting structure includes a positioning groove (401), which is opened inside the second fixing ring (201). The positioning block (400) is inserted into the positioning groove (401) and is installed on one side of the first collar (202).

6. A hydraulic support rock-blocking device according to claim 1, characterized in that: The inner wall of the positioning block (400) is equipped with a fixed shaft (402), and a movable stop (403) is rotatably sleeved on the fixed shaft (402). The movable stop (403) is in contact with one side of the fixed ring (201).

7. A hydraulic support rock-blocking device according to claim 6, characterized in that: The inner wall of the movable stop (403) is equipped with one end of a torsion spring (404), and the other end of the torsion spring (404) is installed on the fixed shaft (402). The torsion spring (404) is sleeved on the fixed shaft (402).

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