A fire-resistant mine single prop column shoe

Abstract

This utility model discloses a flame-retardant single-piece mine support shoe, relating to the field of mine support equipment. The utility model includes a main body plate of the shoe, with a pad at the bottom of the main body plate and an anti-slip pad installed at the bottom of the pad. A groove is formed in the middle of the bottom of the main body plate. This utility model incorporates a bolt, a push block, a movable block, a spring, an insert plate, a slot, a positioning block, and a positioning groove. When removing the anti-slip pad, the worker only needs to turn the bolt head with a screwdriver, causing the bolt to move downwards and driving the push block downwards. At this point, the push block no longer presses against the movable block, and the spring rebounds, pushing the movable block to reset. The movable block then moves the insert plate, causing it to move out of the slot and release the limiting effect on the positioning block. Thus, the pad and anti-slip pad can be removed. This method allows for the installation and removal of the pad and anti-slip pad by turning only one bolt, eliminating the need to turn multiple bolts sequentially, thereby improving the efficiency of removing and replacing the anti-slip pad.

Description

Technical Field

[0001] This utility model relates to the field of mine support equipment, specifically a flame-retardant single support column shoe for mining. Background Technology

[0002] Before mining underground deposits, the roadways in the mining area are arranged in a reasonable manner. In order to avoid instability of the surrounding rock, it is necessary to use individual props for support. When using individual props, prop shoes are needed to provide auxiliary support for the props.

[0003] According to Chinese Patent No. CN222810831U, a single-piece support shoe for mining is disclosed. When using this single-piece support shoe, the connector fixed at the bottom of the connecting ring can be screwed into the connecting groove at the top of the support shoe body plate and tightened. This allows the connecting ring to be installed and fixed at the top of the support shoe body plate. The connecting ring and the support shoe body plate are connected by the connecting groove and the connector. The detachable structure facilitates the individual disassembly and replacement of damaged components after damage to the support shoe assembly, saving the cost of using the support shoe and solving the problem of inconvenient disassembly and replacement of support shoe components.

[0004] Regarding the aforementioned patent content, anti-slip plates are included so that they can be replaced individually when damaged, without replacing the entire support column shoe. However, the installation method of the anti-slip plates involves evenly placing multiple bolts around the bottom of the column shoe to fix them in place. This method requires tightening and loosening each bolt individually with tools during disassembly and assembly, which is cumbersome and time-consuming. Especially in the confined and dimly lit working environment of a mine, workers are prone to fatigue from repeatedly bending over, which not only reduces the efficiency of replacing the anti-slip pads but also increases the time cost of operation. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a flame-retardant single support column shoe for mining, so as to solve the technical problem of poor efficiency in disassembling and replacing anti-slip plates.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant single-piece support column shoe for mining, comprising a column shoe body plate, a pad plate at the bottom of the column shoe body plate, and an anti-slip pad installed at the bottom of the pad plate, a groove at the middle of the bottom of the column shoe body plate, positioning grooves at all four sides of the bottom of the column shoe body plate, and positioning blocks inserted into the positioning grooves, with slots on the side of the positioning blocks near the grooves, a reserved hole penetrating at the middle of the bottom of the anti-slip pad, a bolt threadedly connected at the middle of the inside of the pad plate, and a push block connected to the top of the bolt via a bearing, with the bolt head located inside the reserved hole, four channels also being provided inside the column shoe body plate, with insert plates inserted into the channels, four movable blocks provided inside the grooves, and mounting grooves being provided on the side of the movable blocks near the channels and around the inner wall of the grooves, with a spring installed between every two mounting grooves, and one side of the insert plate being fixedly connected to the movable block.

[0007] By adopting the above technical solution, when it is necessary to disassemble the pad and anti-slip pad, the staff can use a screwdriver to turn the bolt head, so that the bolt rotates and moves, and the movement of the bolt drives the push block to move.

[0008] Furthermore, a connecting ring is connected to the top of the main body plate of the column shoe, and a cavity is opened inside the connecting ring.

[0009] By adopting the above technical solution, the cavity is designed to house the support base, serving a positioning and fixing function, making the connection between the support and the support shoe more secure, and preventing the support from shifting.

[0010] Furthermore, multiple reinforcing ribs are installed between the top of the column shoe body plate and the outer wall of the connecting ring.

[0011] By adopting the above technical solutions, the reinforcing ribs can improve the overall strength of the column shoe body plate.

[0012] Furthermore, the main body plate, connecting ring, and reinforcing ribs of the column shoe are all made of Q235 low-carbon steel or Q355 low-alloy steel.

[0013] By adopting the above technical solution, the main body plate, connecting ring and reinforcing ribs of the column shoe made of metal materials are non-combustible and do not support combustion. They will not melt or release toxic fumes in mine fires or external high-temperature environments, thus maintaining the structural integrity of the column shoe and ensuring the support function of the pillar.

[0014] Furthermore, the insert plate is located inside the slot, and the insert plate is adapted to the slot.

[0015] By adopting the above technical solution, the insert plate is inserted into the slot, which can then lock and limit the positioning block to prevent it from moving.

[0016] Furthermore, the anti-slip mat can be made of nitrile rubber (with deep serrated texture).

[0017] By adopting the above technical solutions, anti-slip mats can improve the anti-slip performance of column shoes.

[0018] Furthermore, the top of the pad is provided with a sealing ring, and the top of the sealing ring is attached to the bottom of the column shoe body plate. The sealing ring is made of nitrile rubber material.

[0019] By adopting the above technical solution, the sealing ring can improve the sealing performance between the pad and the main body plate of the column shoe.

[0020] Furthermore, the outer wall of the pusher block is in contact with the movable block, and the movable block is slidably connected to the groove.

[0021] By adopting the above technical solution, when the push block moves upward, it can push the movable block to move, and the movable block can slide inside the groove.

[0022] Furthermore, multiple guide rods are fixed above the interior of the groove, the guide rods passing through the push block, and the guide rods are made of Q235 low carbon steel or Q355 low alloy structural steel.

[0023] By adopting the above technical solution, the guide rod can guide the push block, thereby improving the stability of the push block during movement.

[0024] Furthermore, the pad is detachably connected to the main body plate of the column shoe, and the push block is detachably connected to the groove.

[0025] By adopting the above technical solution, it is convenient to remove the pad from the main body plate of the column shoe, and the push block can also be removed from the groove.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model comprises a bolt, a push block, a movable block, a spring, an insert plate, a slot, a positioning block, and a positioning groove. When installing the pad and anti-slip mat, the worker inserts the positioning block on the pad into the positioning groove. Then, the worker uses a screwdriver to turn the bolt head, causing the bolt to move upward under the action of the thread. The push block, connected to the top by a bearing, moves upward synchronously with the bolt. The push block then pushes the movable block to move, which in turn compresses the spring. Simultaneously, the movable block drives the insert plate to move, allowing the insert plate to be inserted into the slot, thereby locking and fixing the positioning block. After installing the pad, to remove the anti-slip pad, simply turn the bolt head in the opposite direction with a screwdriver, causing the bolt to move down and move the push block down. At this point, the push block no longer presses against the movable block, and the spring rebounds, pushing the movable block to reset and move. The movable block then moves the insert plate, causing the insert plate to move out of the slot and release the limiting position on the positioning block. In this way, the pad and anti-slip pad can be removed. This method only requires turning one bolt to install and remove the pad and anti-slip pad, eliminating the need to turn multiple bolts sequentially. This simplifies the operation steps, shortens the installation and removal time, and improves the efficiency of removing and replacing the anti-slip pad.

[0028] 2. This utility model has a guide rod to guide the push block, thereby improving the stability of the push block during movement and preventing the push block from rotating. It has a pre-drilled hole so that the bolt head can be placed inside the pre-drilled hole. It has a sealing ring to improve the sealing between the pad plate and the column shoe body plate and to prevent dust and moisture in the mine from entering the gap between the column shoe body plate and the pad plate, thus avoiding corrosion of internal components. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the main body plate structure of the column shoe of this utility model;

[0031] Figure 3 This is a top-view structural diagram of the anti-slip mat of this utility model;

[0032] Figure 4 This is a schematic diagram of the overall orthographic structure of this utility model;

[0033] Figure 5 This is a bottom view of the main body panel of the column shoe of this utility model;

[0034] Figure 6 This is a schematic diagram of the pusher block structure of this utility model;

[0035] Figure 7 This is a schematic diagram of the movable block structure of this utility model;

[0036] Figure 8This is a schematic diagram of the push block structure of this utility model from a bottom view.

[0037] In the diagram: 1. Main body plate of the column shoe; 2. Connecting ring; 3. Cavity; 4. Reinforcing rib; 5. Pad; 6. Anti-slip pad; 7. Sealing ring; 8. Reserved hole; 9. Bolt; 10. Groove; 11. Push block; 12. Guide rod; 13. Movable block; 14. Mounting groove; 15. Spring; 16. Insert plate; 17. Channel; 18. Slot; 19. Positioning block; 20. Positioning groove. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The embodiments of this utility model will be described below based on its overall structure.

[0040] Example 1:

[0041] A flame-retardant single-piece support shoe for mining, such as Figures 1-8 As shown, the system includes a column shoe body plate 1, a pad 5 at the bottom of the column shoe body plate 1, and an anti-slip pad 6 installed at the bottom of the pad 5. The pad 5 is made of Q235 low carbon steel or Q355 low alloy structural steel. A groove 10 is formed in the middle of the bottom of the column shoe body plate. Positioning grooves 20 are formed around the bottom of the column shoe body plate 1, and positioning blocks 19 are inserted into the positioning grooves 20. A slot 18 is formed on the side of the positioning block 19 near the groove 10. A reserved hole 8 is formed through the bottom middle of the anti-slip pad 6. A bolt 9 is threadedly connected to the middle of the inside of the pad 5, and a push block 11 is connected to the top of the bolt 9 through a bearing. The bolt head of the bolt 9 is located inside the reserved hole 8, and the outer wall of the bolt head of the bolt 9 fits against the inner wall of the reserved hole 8. The bolt 9 can be made of carbon steel (such as Q235). The main body plate 1 of the column shoe is provided with four channels 17, and insert plates 16 are inserted into the channels 17. Four movable blocks 13 are provided inside the groove 10. The side of the movable block 13 near the channel 17 and the inner wall of the groove 10 are provided with mounting grooves 14. A spring 15 is installed between every two mounting grooves 14. The spring 15 is made of alloy spring steel (50CrVA or 60Si2Mn) and the surface of the spring 15 is plated with zinc chromium coating.

[0042] Specifically, one side of the insert plate 16 is fixedly connected to the movable block 13. When it is necessary to remove the pad 5 and the anti-slip pad 6, the operator can use a screwdriver to turn the bolt head of the bolt 9, causing the bolt 9 to rotate and move. The movement of the bolt 9 will drive the push block 11 to move. The top of the column shoe body plate 1 is connected to a connecting ring 2, and the connecting ring 2 has a cavity 3 inside. The cavity 3 is designed to accommodate the support base, which serves to position and fix it, making the connection between the support and the column shoe more secure and preventing the support from shifting. The insert plate 16 is located in the slot. Inside slot 18, insert plate 16 is adapted to slot 18. Insert plate 16 is inserted into slot 18, thereby locking and limiting the positioning block 19 to prevent it from moving. The main body plate 1 and connecting ring 2 of the column shoe are made of Q235 low carbon steel or Q355 low alloy steel. The main body plate 1, connecting ring 2 and reinforcing rib 4 of the column shoe are made of metal materials. They are non-combustible and do not support combustion. They will not melt or release toxic fumes in mine fires or external high temperature environments. They can maintain the structural integrity of the column shoe and ensure the support function of the support column.

[0043] See Figures 1-7 The anti-slip pad 6 can be made of nitrile rubber (with deep serrated texture). The anti-slip pad 6 can improve the anti-slip performance of the column shoe. The outer wall of the push block 11 is in contact with the movable block 13. The movable block 13 is slidably connected to the groove 10. When the push block 11 moves upward, it can push the movable block 13 to move. The movable block 13 can slide inside the groove 10. The top of the pad 5 is provided with a sealing ring 7, and the top of the sealing ring 7 is in contact with the bottom of the column shoe body plate 1. The sealing ring 7 is made of nitrile rubber. The setting of the sealing ring 7 can improve the sealing between the pad 5 and the column shoe body plate 1. Both the anti-slip pad 6 and the sealing ring 7 need to be treated with antistatic agents. That is, conductive carbon black (such as acetylene black, conductive furnace black) can be added during the production of nitrile rubber. The amount is usually 15%-30% of the weight of rubber. The carbon black particles form chain-like conductive paths in the rubber, which can reduce the surface resistance to 1×10. 6 -1×10 8 Ω, while not significantly reducing the elasticity and wear resistance of the rubber (nitrile rubber itself is oil-resistant and wear-resistant, suitable for mining environment), the pad 5 is detachably connected to the column shoe main body plate 1, and the push block 11 is detachably connected to the groove 10, so that the pad 5 can be easily removed from the column shoe main body plate 1, and the push block 11 can also be moved out of the groove 10. The movable block 13 and the push block 11 are both made of Q235 low carbon steel or Q355 low alloy structural steel.

[0044] Example 2:

[0045] Based on the above embodiment one, the following structure will be set up to improve the strength of the column shoe main body plate 1.

[0046] Specifically, multiple reinforcing ribs 4 are installed between the top of the column shoe body plate 1 and the outer wall of the connecting ring 2. The reinforcing ribs 4 are made of Q235 low carbon steel or Q355 low alloy steel. The reinforcing ribs 4 can improve the overall strength of the column shoe body plate 1.

[0047] Example 3:

[0048] Based on the above embodiment 1, in order to improve the stability of the pusher block 11 when it moves, it is necessary to guide the pusher block 11, so the following structure will be set.

[0049] See Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8 Multiple guide rods 12 are fixed inside the groove 10. The guide rods 12 pass through the push block 11. The guide rods 12 are made of Q235 low carbon steel or Q355 low alloy structural steel. The guide rods 12 can guide the push block 11, thereby improving the stability of the push block 11 when it moves.

[0050] The working principle of this utility model is as follows: First, when it is necessary to install the pad 5 and the anti-slip pad 6, the worker inserts the positioning block 19 on the pad 5 into the positioning groove 20 to achieve the initial positioning of the pad 5 and the main body plate 1 of the column shoe, preventing the pad 5 from sliding laterally. Then, the worker uses a screwdriver to turn the bolt head of the bolt 9 located in the reserved hole 8. The bolt 9 moves upward under the action of the thread, and the push block 11 connected to the top end by the bearing moves upward synchronously with the bolt 9. The push block 11 pushes the movable block 13 to move, and the movable block 13 squeezes the spring 15, causing the spring 15 to be compressed. At the same time, the movable block 13 will drive the insertion plate 16 to move, so that the insertion plate 16 is inserted into the slot 18. This allows the positioning block 19 to be locked and fixed, thus completing the installation of the pad 5 and the anti-slip pad 6. When removing the anti-slip pad 6, simply turn the bolt head of the bolt 9 in the opposite direction with a screwdriver, causing the bolt 9 to move down and drive the push block 11 down. At this time, the push block 11 no longer presses against the movable block 13, and the spring 15 stretches and pushes the movable block 13 to reset and move. The movable block 13 then drives the insert plate 16 to move, causing the insert plate 16 to move out of the slot 18 and release the limitation on the positioning block 19. In this way, the pad 5 and the anti-slip pad 6 can be removed, and the push block 11 will also move out of the groove 10. In this way, the installation and removal of the pad 5 and the anti-slip pad 6 can be achieved by turning only one bolt 9.

[0051] The base of the single support column is embedded into the main body plate 1 of the column shoe through the cavity 3 of the connecting ring 2. The reinforcing rib 4 between the connecting ring 2 and the main body plate enhances the overall structural strength. The main body plate 1 of the column shoe, the connecting ring 2 and the reinforcing rib 4 are made of Q235 / Q355 steel, which has flame retardancy and ensures that the structure does not fail in the environment of mine fire.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A flame-retardant single-piece mine support shoe, comprising a main body plate (1), characterized in that: The bottom of the main body plate (1) of the column shoe is provided with a pad (5), and the bottom of the pad (5) is provided with an anti-slip pad (6). A groove (10) is opened in the middle of the bottom of the main body plate of the column shoe. Positioning grooves (20) are opened around the bottom of the main body plate (1), and positioning blocks (19) are inserted into the positioning grooves (20). A slot (18) is opened on the side of the positioning block (19) near the groove (10). A reserved hole (8) is passed through the middle of the bottom of the anti-slip pad (6). A bolt (9) is threadedly connected to the middle of the inside of the pad (5), and the bolt (9) The top of the column shoe body plate (1) is connected to a push block (11) via a bearing, and the bolt head of the bolt (9) is located inside the reserved hole (8). The interior of the column shoe body plate (1) is also provided with four channels (17), and a plug plate (16) is inserted inside the channel (17). The interior of the groove (10) is provided with four movable blocks (13), and the side of the movable block (13) near the channel (17) and the inner wall of the groove (10) are provided with mounting grooves (14). A spring (15) is installed between every two mounting grooves (14). One side of the plug plate (16) is fixedly connected to the movable block (13).

2. The flame-retardant single-piece support column shoe for mining according to claim 1, characterized in that: The top of the main body plate (1) of the column shoe is connected to a connecting ring (2), and a cavity (3) is opened inside the connecting ring (2).

3. The flame-retardant single-piece support column shoe for mining according to claim 1, characterized in that: Multiple reinforcing ribs (4) are installed between the top of the main body plate (1) of the column shoe and the outer wall of the connecting ring (2).

4. The flame-retardant single-piece mine support shoe according to claim 1, characterized in that: The main body plate (1), connecting ring (2) and reinforcing rib (4) of the column shoe are all made of Q235 low carbon steel or Q355 low alloy steel.

5. The flame-retardant single-piece mine support shoe according to claim 1, characterized in that: The insert plate (16) is located inside the slot (18) and is adapted to the slot (18).

6. The flame-retardant single-piece mine support shoe according to claim 1, characterized in that: The anti-slip mat (6) can be made of nitrile rubber.

7. A flame-retardant single-piece mine support shoe according to claim 1, characterized in that: The top of the pad (5) is provided with a sealing ring (7), and the top of the sealing ring (7) is attached to the bottom of the column shoe body plate (1). The sealing ring (7) is made of nitrile rubber material.

8. The flame-retardant single-piece mine support shoe according to claim 1, characterized in that: The outer wall of the push block (11) is in contact with the movable block (13), and the movable block (13) is slidably connected to the groove (10).

9. A flame-retardant single-piece mine support shoe according to claim 1, characterized in that: Multiple guide rods (12) are fixed above the inside of the groove (10). The guide rods (12) pass through the push block (11). The guide rods (12) are made of Q235 low carbon steel or Q355 low alloy structural steel.

10. A flame-retardant single-piece support column shoe for mining according to claim 1, characterized in that: The pad (5) is detachably connected to the main body plate (1) of the column shoe, and the push block (11) is detachably connected to the groove (10).

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