Support for mining

Abstract

The utility model relates to the technical field of mine supporting equipment, in particular to a mining support which comprises a top beam, two contact plates abut against the top side of the top beam, one sides of the two contact plates abut against each other, positioning structures are arranged on the contact plates, four connecting bases are fixedly connected to the two sides of the top beam, and the two sides of the top beam abut against the two contact plates. A connecting shaft is movably connected to the interior of the connecting seat, a nut is in threaded connection to the connecting shaft, one side of the nut abuts against the connecting seat, a pull block is fixedly connected to the top end of the connecting shaft, four hook blocks are fixedly connected to the bottom side of the contact plate, and the hook blocks are clamped with the adjacent pull blocks; the contact plate capable of being quickly detached is arranged on the top side of the top beam, the contact plate can directly make contact with the working face top plate, when the contact plate is damaged, the contact plate can be quickly replaced, the overhaul and maintenance time is saved, meanwhile, the situation that the whole top beam needs to be replaced is avoided, and therefore the use cost is also saved.

Description

Technical Field

[0001] This utility model relates to a support, specifically a support for mining, and belongs to the technical field of mine support equipment. Background Technology

[0002] In mineral resource extraction, especially in underground coal mining operations, hydraulic supports play an irreplaceable role as the core equipment of fully mechanized coal mining faces. Through the coordinated action of hydraulic cylinders and top beams, they can effectively support the roof of the working face, prevent roof collapse, and provide a stable working space for the safe operation of equipment such as coal mining machines and scraper conveyors.

[0003] However, during long-term use, the top beam of the hydraulic support, as the component directly in contact with the roof, faces severe wear problems. The roof lithology of mining faces is complex, often accompanied by friction and impact from gangue and hard rock particles. The surface of the top beam gradually wears down due to continuous compression and sliding contact, even developing localized deformation and cracks. When the wear of the top beam reaches a certain level, its structural strength and support stability will significantly decrease. If not addressed promptly, this may lead to roof support failure, seriously threatening operational safety.

[0004] Currently, the industry standard for dealing with worn top beams is to disassemble the entire top beam for replacement or major repair. However, as the main load-bearing structural component of the hydraulic support, the top beam is large and heavy. Disassembly requires the use of large hoisting equipment and interrupts mining operations, leading to delays and severely impacting coal mining efficiency. Furthermore, replacing the entire top beam incurs high spare parts costs, and even localized wear necessitates complete scrapping or return to the factory for repair, resulting in significant material waste and economic losses. Utility Model Content

[0005] The purpose of this invention is to provide a support for mining in order to solve the above problems. By setting a quick-removable contact plate on the top side of the top beam, the contact plate can be quickly replaced when it is damaged. This not only saves maintenance time, but also avoids the need to replace the entire top beam, thereby saving operating costs.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a support for mining, comprising a top beam, the top side of which abuts against two contact plates, one side of which abuts against each other, a positioning structure provided on the contact plates, and a fixing structure provided on the top beam, the fixing structure comprising a connecting seat and a connecting shaft, four connecting seats fixedly connected to both sides of the top beam, a connecting shaft movably connected inside the connecting seat, a nut threadedly connected to the connecting shaft, one side of the nut abutting against the connecting seat, a pull block fixedly connected to the top of the connecting shaft, and four hook blocks fixedly connected to the bottom side of the contact plates, the hook blocks engaging with adjacent pull blocks.

[0007] Preferably, the hook block has a groove, and one end of the pull block extends into the interior of an adjacent groove.

[0008] Preferably, the top of the groove cross-section has a trapezoidal structure, and the width of the bottom of the groove is equal to the width of the pull block.

[0009] Preferably, the hook block has an overall L-shaped structure, and the two hook blocks are symmetrically distributed about the middle of the contact plate.

[0010] Preferably, the positioning structure includes sockets and insert shafts, with two sockets fixedly connected to both sides of the top beam, and two insert shafts fixedly connected to the bottom side of the contact plate, the insert shafts engaging with adjacent sockets.

[0011] Preferably, the bottom end of the insert shaft cross-section has a trapezoidal structure, and the insert shaft is located in the middle of the contact plate.

[0012] Preferably, one end of the top beam is rotatably connected to a side guard beam, and multiple connecting rods are rotatably connected to the side guard beam, with the multiple connecting rods rotatably connected to the base.

[0013] Preferably, two hydraulic cylinders are mounted on the base, and the tops of the two hydraulic cylinders are rotatably connected to the bottom side of the same side guard beam.

[0014] The beneficial effects of this utility model are as follows: Since the top side of the top beam is equipped with two contact plates, it can directly contact the top plate of the working surface, avoiding damage caused by direct contact between the top beam and the top plate. When a contact plate is damaged, the nut can be rotated by turning a wrench. Once there is a certain distance between the nut and the connecting seat, the connecting shaft can be pushed upwards. The pull block will move with the connecting shaft. When the pull block and the hook block are no longer engaged, the connecting shaft can be rotated 180 degrees. At this point, the pull block will not block the hook block. Repeat the above operation until all four pull blocks no longer block the hook block. Then, the contact plate can be directly removed from the top side of the top beam, thus achieving quick disassembly of the contact plate. Therefore, when a contact plate is damaged, it can be quickly replaced, saving maintenance time and avoiding the need to replace the entire top beam, thereby saving operating costs. By setting two contact plates, the weight during disassembly and assembly can be reduced. Furthermore, when one contact plate is damaged, only the damaged contact plate needs to be replaced, further saving operating costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0017] Figure 3 This is a schematic diagram of the connection structure between the connector and the connecting shaft of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the hook block and the groove of this utility model.

[0019] In the diagram: 1. Top beam; 2. Contact plate; 3. Fixing structure; 301. Connecting seat; 302. Connecting shaft; 303. Nut; 304. Pull block; 305. Hook block; 306. Groove; 4. Positioning structure; 401. Socket; 402. Insert shaft; 5. Side guard beam; 6. Connecting rod; 7. Base; 8. Hydraulic cylinder. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4As shown, a support for mining includes a top beam 1. The top side of the top beam 1 abuts against two contact plates 2, and one side of the two contact plates 2 abuts against each other. The contact plates 2 are provided with a positioning structure 4. The top beam 1 is provided with a fixing structure 3. The fixing structure 3 includes a connecting seat 301 and a connecting shaft 302. Four connecting seats 301 are fixedly connected to both sides of the top beam 1. The connecting shaft 302 is movably connected inside the connecting seat 301. Nuts 303 are threadedly connected to the connecting shaft 302. One side of the nut 303 abuts against the connecting seat 301. A pull block 304 is fixedly connected to the top of the connecting shaft 302. Four hook blocks 305 are fixedly connected to the bottom side of the contact plates 2. The hook blocks 305 engage with the adjacent pull blocks 304.

[0022] As a technical optimization of this utility model, the hook block 305 is provided with a groove 306, and one end of the pull block 304 extends into the interior of the adjacent groove 306, so that the pull block 304 can be limited, and at the same time, the connecting shaft 302 can be prevented from rotating with the nut 303 when the nut 303 is rotated.

[0023] As a technical optimization of this utility model, the top of the groove 306 has a trapezoidal structure, which can play a motion guiding role when the pull block 304 and the groove 306 are engaged. The width of the bottom of the groove 306 is equal to the width of the pull block 304, so when the pull block 304 is engaged in the interior of the groove 306, the connecting shaft 302 cannot rotate.

[0024] As a technical optimization of this utility model, the hook block 305 has an overall L-shaped structure, and the two hook blocks 305 are symmetrically distributed about the middle of the contact plate 2. The stability of fixing the contact plate 2 can be improved by the simultaneous contact between the four hook blocks 305 and the pull block 304.

[0025] As a technical optimization of this utility model, the positioning structure 4 includes a socket 401 and a shaft 402. Two sockets 401 are fixedly connected to both sides of the top beam 1, and two shafts 402 are fixedly connected to the bottom side of the contact plate 2. The shafts 402 engage with the adjacent sockets 401. Therefore, when installing the contact plate 2, the shafts 402 can be inserted into the corresponding sockets 401 to position the contact plate 2.

[0026] As a technical optimization of this utility model, the bottom end of the cross section of the insertion shaft 402 is trapezoidal, so it can play a motion guiding role in the process of the insertion shaft 402 being inserted into the socket 401. The insertion shaft 402 is located in the middle of the contact plate 2.

[0027] As a technical optimization of this utility model, a side guard beam 5 is rotatably connected to one end of the top beam 1. Multiple connecting rods 6 are rotatably connected to the side guard beam 5. The multiple connecting rods 6 are rotatably connected to the base 7. Two hydraulic cylinders 8 are installed on the base 7. The top ends of the two hydraulic cylinders 8 are rotatably connected to the bottom side of the same side guard beam 5. When it is necessary to change the position of the top beam 1, the two hydraulic cylinders 8 can be activated simultaneously. The retraction of the two hydraulic cylinders 8 will drive the top beam 1 to move. By setting the side guard beam 5, the rear side of the support can be protected. At the same time, the multiple connecting rods 6 can restrict the movement trajectory of the top beam 1 when the hydraulic cylinders 8 retract or extend.

[0028] In use, this utility model has two contact plates 2 on the top side of the top beam 1, allowing direct contact with the top plate of the working surface. This avoids damage caused by direct contact between the top beam 1 and the top plate. When the contact plate 2 is damaged, the nut 303 can be rotated using a wrench. Once a certain distance is established between the nut 303 and the connecting seat 301, the connecting shaft 302 can be pushed upwards. The pull block 304 will move along with the connecting shaft 302. When the pull block 304 is no longer engaged with the groove 306, the connecting shaft 302 can be rotated 180 degrees. At this point, the pull block 304 will no longer block the hook block 305. Repeating the above operation will allow the four... Pull block 304 does not block hook block 305, then moves contact plate 2 to separate insert shaft 402 and socket 401. Finally, contact plate 2 can be directly removed from the top side of top beam 1, thus realizing quick disassembly of contact plate 2. Therefore, when contact plate 2 is damaged, it can be quickly replaced, which not only saves maintenance time, but also avoids the need to replace the entire top beam 1, thus saving the cost of use. By setting two contact plates 2, the weight during disassembly and assembly can be reduced. At the same time, when one contact plate 2 is damaged, only the damaged contact plate 2 needs to be replaced, thus further saving the cost of use.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A support for mining, comprising a top beam (1), characterized in that: The top side of the top beam (1) abuts against two contact plates (2), and one side of the two contact plates (2) abuts against each other. The contact plates (2) are provided with a positioning structure (4), and the top beam (1) is provided with a fixing structure (3). The fixing structure (3) includes a connecting seat (301) and a connecting shaft (302). Four connecting seats (301) are fixedly connected to both sides of the top beam (1). The connecting shaft (302) is movably connected inside the connecting seat (301). A nut (303) is threaded on the connecting shaft (302). One side of the nut (303) abuts against the connecting seat (301). A pull block (304) is fixedly connected to the top of the connecting shaft (302). Four hook blocks (305) are fixedly connected to the bottom side of the contact plate (2). The hook blocks (305) engage with the adjacent pull blocks (304).

2. The support for mining according to claim 1, characterized in that: The hook block (305) has a groove (306) and one end of the pull block (304) extends into the interior of the adjacent groove (306).

3. A support for mining according to claim 2, characterized in that: The top of the groove (306) has a trapezoidal structure, and the width of the bottom of the groove (306) is equal to the width of the pull block (304).

4. A support for mining according to claim 1, characterized in that: The hook block (305) has an overall L-shaped structure, and the two hook blocks (305) are symmetrically distributed about the middle of the contact plate (2).

5. A support for mining according to claim 1, characterized in that: The positioning structure (4) includes a socket (401) and a pin (402). Two sockets (401) are fixedly connected to both sides of the top beam (1), and two pins (402) are fixedly connected to the bottom side of the contact plate (2). The pins (402) engage with the adjacent sockets (401).

6. A support for mining according to claim 5, characterized in that: The bottom end of the cross section of the insert shaft (402) is trapezoidal, and the insert shaft (402) is located in the middle of the contact plate (2).

7. A support for mining according to claim 1, characterized in that: One end of the top beam (1) is rotatably connected to a side guard beam (5), and multiple connecting rods (6) are rotatably connected to the side guard beam (5), and the multiple connecting rods (6) are rotatably connected to the base (7).

8. A support for mining according to claim 7, characterized in that: Two hydraulic cylinders (8) are mounted on the base (7), and the tops of the two hydraulic cylinders (8) are rotatably connected to the bottom side of the same side guard beam (5).

Images