A reflective sign fixing device for underground mines

Abstract

The utility model relates to mine safety facilities technical field, concretely is a kind of underground mine and is used reflection signboard fixing device, including fixed bottom plate, the upper surface of fixed bottom plate is equipped with fixed hole, the inside of fixed hole is slidably connected with expansion wire, the outer surface of expansion wire is all equipped with hollow expansion pipe, the top of hollow expansion pipe is all with the bottom surface of fixed bottom plate contact, the outer surface of hollow expansion pipe is all equipped with rubber sleeve.The underground mine and is used reflection signboard fixing device, by setting up and hollow expansion pipe, nitrile rubber sleeve and telescopic spring are equipped to the outside of expansion wire, and by artificial torsion the hexagon locknut outside expansion wire, utilize nitrile rubber sleeve and telescopic spring absorption vibration energy, and by hexagon locknut and buffer washer to make the structure anti-loose effect promotion, play the role of improving the stability of this reflection signboard fixing device fixation.

Description

Technical Field

[0001] This utility model relates to the field of mine safety facilities technology, specifically a reflective sign fixing device for underground mines. Background Technology

[0002] During underground mining operations, numerous hazardous situations arise that require warning. Underground mines rely on reflective signs to provide warnings such as "evacuation routes, danger zones, and equipment location," necessitating the use of reflective sign fixing devices for secure placement. Existing utility model patent CN217710430U discloses a reflective sign with an adjustable function for warning purposes, comprising a base, a mounting block mounted on top of the base, a support rod mounted above the mounting block, an adjusting component inside the support rod, a cleaning component mounted on one side of the adjusting component, and the reflective sign connected to the cleaning component.

[0003] The above-mentioned technical solution not only cleans the surface of reflective signs, preventing dust accumulation and ensuring their effectiveness, but also allows for easy height adjustment by staff, facilitating maintenance and installation and improving the flexibility of the reflective signs. However, the aforementioned technical solution uses an expansion bolt + fixing frame structure, relying solely on a single bolt for fixation. The bolts are prone to loosening due to the passage of mine vehicles or vibrations from blasting, causing the fixing device and the sign to tilt, resulting in the reflective surface deviating from the direction of pedestrian and vehicle traffic and rendering the reflective sign ineffective. Therefore, there is a need to develop a stable fixing device for reflective signs in underground mines that prevents loosening. Utility Model Content

[0004] To address the above technical problems, this utility model provides a reflective sign fixing device for underground mines that can be stably installed and avoids loosening, thus solving the problem of loosening in existing reflective sign fixing devices.

[0005] To solve the above-mentioned technical problems, the present invention provides a reflective sign fixing device for underground mines, comprising a fixed base plate, a fixing hole on the upper surface of the fixed base plate, an expansion wire slidably disposed in the fixing hole, a hollow expansion tube sleeved on the outside of the expansion wire, rubber sleeves on the upper and lower parts of the hollow expansion tube, the sides of the upper and lower rubber sleeves close to each other being fixedly connected to the two ends of a telescopic spring, a baffle plate fixedly connected to the lower part of the expansion wire, the baffle plate being fixedly connected to the bottom end of the expansion tube and in contact with the bottom surface of the rubber sleeve, a buffer washer sleeved on the upper part of the expansion wire, the bottom surface of the buffer washer in contact with the upper surface of the fixed base plate, and a hexagonal anti-loosening nut threadedly connected to the upper end of the expansion wire, the bottom surface of the hexagonal anti-loosening nut in contact with the upper surface of the buffer washer.

[0006] Furthermore, the top ends of the hollow expansion tube and the rubber sleeve are in contact with the bottom surface of the fixed base plate, and the inner wall of the telescopic spring is in contact with the outer surface of the hollow expansion tube.

[0007] Furthermore, a limiting platform is fixedly connected to the upper surface of the fixed base plate. An adjustment mounting groove is provided on the limiting platform. Two mounting moving blocks are slidably connected inside the adjustment mounting groove. The bottom surface of each mounting moving block is in contact with the upper surface of the fixed base plate. An installation fixing nut is fixedly connected to the inner wall of each mounting moving block.

[0008] Furthermore, an L-shaped load-bearing bracket is connected above the limiting platform. The L-shaped load-bearing bracket is threadedly connected to two mounting nuts by two mounting bolts. The lower ends of the two mounting bolts pass through the L-shaped load-bearing bracket and the mounting nuts in sequence and extend to the bottom of the mounting moving block.

[0009] Furthermore, the upper part of the L-shaped load-bearing bracket is slidably connected to an extension plate, the upper end of the extension plate is fixedly connected to an extension block, the front side of the extension block is fixedly connected to an adjustment slide rail, the interior of the adjustment slide rail is slidably engaged with an adjustment slider, the front side of the adjustment slider is fixedly connected to an installation frame, and the interior of the installation frame is engaged with a reflective sign body.

[0010] Furthermore, both the extension plate and the L-shaped load-bearing bracket are provided with pin holes, and the positioning pins are arranged to pass through the pin holes on the L-shaped load-bearing bracket and the extension plate in succession.

[0011] This utility model has the following advantages compared with the prior art:

[0012] 1. This utility model, by setting fixing holes on the base plate and drilling corresponding holes at the rock positions, allows for easy placement of the hollow expansion tube, rubber sleeve, and telescopic spring onto the outside of the expansion wire. The expansion wire is then installed through the two sets of fixing holes into the drilled holes. By manually twisting the hexagonal anti-loosening nut on the outside of the expansion wire, the baffle fixed to the outside of the expansion wire is lifted upwards, causing the hollow expansion tube to expand outwards. This allows the expansion wire to be locked into the drilled hole. The two nitrile rubber sleeves and the telescopic spring absorb vibration energy, and the hexagonal anti-loosening nut and buffer washer enhance the anti-loosening effect of the structure. This reduces the problem of screws loosening due to vibrations from mine car passage or blasting, and reduces problems such as the fixing device tilting with the sign, the reflective surface deviating from the direction of personnel and vehicle passage, causing the reflective sign to fail to provide warnings. This improves the stability of the reflective sign fixing device for underground mines.

[0013] 2. This utility model connects a limiting platform to a fixed base plate and connects the L-shaped load-bearing bracket to the limiting platform using an installation moving block. This enables the L-shaped load-bearing bracket to be adjusted forward and backward, thereby enabling the reflective sign body to be adjusted forward and backward. By sliding an extension plate on the upper part of the L-shaped load-bearing bracket, the height of the reflective sign body can be adjusted. By setting an adjustment slide rail and using an adjustment slider to connect the mounting frame, the left and right adjustment of the reflective sign body can be achieved, thus improving the applicability of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the reflective sign body of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the fixed base plate of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the hollow expansion tube of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the movable block of this utility model.

[0018] Figure 5 This is a three-dimensional rear view structural diagram of the L-shaped load-bearing bracket of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the adjusting slide rail of this utility model.

[0020] In the diagram: 1. Fixed base plate; 2. Hollow expansion tube; 3. Rubber sleeve; 4. Telescopic spring; 5. Fixing hole; 6. Expansion thread; 7. Baffle plate; 8. Hexagonal anti-loosening nut; 9. Buffer washer; 10. Limiting platform; 11. Adjustment mounting groove; 12. Mounting moving block; 13. Mounting fixing nut; 14. L-shaped load-bearing bracket; 15. Mounting bolt; 16. Extension plate; 17. Positioning pin; 18. Mounting frame; 19. Reflective sign body; 20. Extension block; 21. Adjusting slide rail; 22. Adjusting slider. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1-6 The device shown is a reflective sign fixing device for underground mines, including a fixed base plate 1. A limiting platform 10 is fixedly connected to the upper surface of the fixed base plate 1. An adjustment mounting groove 11 is provided on the upper surface of the limiting platform 10. By fixing the limiting platform 10 to the fixed base plate 1, the structure for installing the reflective sign can be installed. The adjustment mounting groove 11 facilitates the installation of different types of installation structures. Two installation moving blocks 12 are slidably connected inside the adjustment mounting groove 11. The bottom surface of each installation moving block 12 is in contact with the upper surface of the fixed base plate 1. An installation fixing nut 13 is fixedly connected to the inner wall of each installation moving block 12. By sliding the two installation moving blocks 12 inside the adjustment mounting groove 11, the installation distance between the two installation fixing nuts 13 is adjusted, thereby facilitating the fixing of the structure for installing the reflective sign using the installation fixing nuts 13.

[0023] To enhance the stability and robustness of the connection, fixing holes 5 are provided at the four corners of the upper surface of the fixing base plate 1. An expansion wire 6 is slidably connected inside each fixing hole 5. A hollow expansion tube 2 is fitted onto the outer surface of each expansion wire 6. The top end of each hollow expansion tube 2 contacts the bottom surface of the fixing base plate 1. Two rubber sleeves 3, made of nitrile rubber, are fitted onto the upper and lower parts of the outer surface of each hollow expansion tube 2. The upper surface of the upper rubber sleeve 3 contacts the bottom surface of the fixing base plate 1. The sides of the two rubber sleeves 3 that are close to each other are fixed. A telescopic spring 4 is connected, and the inner wall of the telescopic spring 4 is in contact with the outer surface of the two sets of hollow expansion tubes 2 respectively. A baffle 7 is fixedly connected to the lower part of the outer surface of the expansion wire 6. The upper surface of the baffle 7 is in contact with the bottom end of the hollow expansion tube 2 and the bottom surface of the rubber sleeve 3 located at the bottom. A buffer washer 9 is fitted on the upper part of the outer surface of each expansion wire 6. The bottom surface of the buffer washer 9 is in contact with the upper surface of the fixed base plate 1. A hexagonal anti-loosening nut 8 is threaded to the upper end of the expansion wire 6. The bottom surface of the hexagonal anti-loosening nut 8 is in contact with the upper surface of the buffer washer 9.

[0024] An L-shaped load-bearing bracket 14 is provided above the limiting platform 10. Two mounting bolts 15 are internally threaded into the L-shaped load-bearing bracket 14. Each mounting bolt 15 is threaded into the interior of two mounting nuts 13. The bottom ends of the two mounting bolts 15 pass through the L-shaped load-bearing bracket 14 and the two mounting nuts 13, extending to the bottom of the two mounting movable blocks 12. The two mounting bolts 15 are manually twisted to install them into the L-shaped load-bearing bracket 14, where they are threaded into the two mounting nuts 13, thus facilitating the fixed installation of the L-shaped load-bearing bracket 14. An extension plate 16 is slidably inserted into the upper part of the reflective sign. An extension block 20 is fixedly connected to the upper surface of the extension plate 16. By sliding the extension plate 16 within the L-shaped load-bearing bracket 14, the height of the extension block 20 can be easily adjusted, thereby facilitating the adjustment of the height of the reflective sign. An adjustment slide rail 21 is fixedly connected to the front side of the extension block 20. An adjustment slider 22 is slidably engaged inside the adjustment slide rail 21. Both the adjustment slide rail 21 and the adjustment slider 22 are matching T-shaped structures. By sliding the adjustment slider 22 within the adjustment slide rail 21, the horizontal position of the reflective sign can be easily adjusted, thus facilitating the use of the reflective sign. A mounting frame 18 is fixedly connected to the left side of the adjustment slider 22. The reflective sign body 19 is engaged inside the mounting frame 18. By fixing the mounting frame 18 to the front side of the adjustment slider 22, it is convenient to install the reflective sign body 19 of different signs, thereby facilitating the use of different models of reflective sign body 19.

[0025] To adjust the height of the reflective sign body 19 and improve the applicability of the device, a positioning pin 17 is engaged inside the extension plate 16 and the L-shaped load-bearing bracket 14. A pin hole is provided at the bottom of the extension plate 16, and multiple pin holes are provided on the L-shaped load-bearing bracket 14. One end of the positioning pin 17 passes through the L-shaped load-bearing bracket 14 and the extension plate 16 and extends to the left side of the L-shaped load-bearing bracket 14. The other end of the positioning pin 17 is detachably connected to a safety pin. By using the positioning pin 17 to pass through the L-shaped load-bearing bracket 14 and the extension plate 16, the extension plate 16 inside the L-shaped load-bearing bracket 14 can be easily limited, thereby determining the fixed height of the fixed structure.

[0026] The working principle of this embodiment is as follows:

[0027] To install this fixing device for use as a reflective warning sign for miners in underground mines, the device is first manually placed in the required position. Workers then drill holes corresponding to the fixing hole 5 at the required location. Next, the hollow expansion tube 2 is manually fitted over the expansion wire 6, and the two rubber sleeves 3 and the telescopic spring 4 are manually fitted over the hollow expansion tube 2 until the bottom surface of the hollow expansion tube 2 and the bottom surface of one of the rubber sleeves 3 are in contact with the upper surface of the baffle 7. The expansion wire 6, along with the hollow expansion tube 2, rubber sleeves 3, telescopic spring 4, and baffle 7, is then manually installed into the drilled hole. Simultaneously, the fixing base plate 1 is manually placed in the required position, with the tip of the expansion wire 6 passing through the fixing hole 5 on the fixing base plate 1, until the tip of the hollow expansion tube 2 and the upper surface of the other rubber sleeve 3 are in contact with the bottom surface of the fixing base plate 1. Finally, the buffer washer 9 is manually inserted through the expansion wire 6 and installed onto the fixing base plate 1 outside the expansion wire 6. The device can be manually twisted to allow for expansion... The expansion screw 6 is externally threaded onto a hexagonal lock nut 8, which is then attached to a buffer washer 9. Using a tool, the expansion screw 6 is positioned to prevent rotation. Continuing to twist the hexagonal lock nut 8 causes the buffer washer 9 to press against the upper surface of the fixed base plate 1, allowing the expansion screw 6 to slide upwards along the fixed hole 5. This also causes the baffle 7 at the bottom of the expansion screw 6 to move upwards. At this point, due to the pressure between the hollow expansion tube 2 and the bottom surface of the fixed base plate 1, and further pressure from the baffle 7, the middle of the hollow expansion tube 2 expands outwards, pressing against the drilled hole. The expansion spring 4 outside the hollow expansion tube 2 can be used to squeeze the inner wall of the drilled hole to move and rotate the expansion wire 6 inside the drilled hole for fixation. The hollow expansion tube 2 is covered with two rubber sleeves 3 and expansion spring 4 to absorb the vibration energy of the fixing structure and improve the vibration resistance of the fixing structure. The buffer washer 9 under the hexagonal anti-loosening nut 8 can increase the tightening torque by using the spring washer to improve its anti-loosening effect, so that the fixing device can be installed in the required position.

[0028] Next, by manually moving and adjusting the two mounting blocks 12 in the mounting slot 11, different models of L-shaped load-bearing brackets 14 can be placed on the limiting platform 10. The mounting bolts 15 are then screwed into the mounting nuts 13 in the mounting blocks 12 to fix the L-shaped load-bearing brackets 14. At the same time, by manually pulling the positioning pins 17, the extension plate 16 can slide within the L-shaped load-bearing bracket 14 to adjust the height of the adjusting slide rail 21. The positioning pins 17 are then manually passed through the L-shaped load-bearing bracket 14 and the extension plate 16 to position the extension plate 16 within the L-shaped load-bearing bracket 14. The adjusting slider 22 within the adjusting slide rail 21 is then moved to adjust the horizontal position of the mounting frame 18 with the reflective sign body 19, thus facilitating the adjustment of the height of the reflective sign body 19 within the mounting frame 18 and enabling the use of the reflective sign body 19 to provide warning signs to miners.

Claims

1. A device for fixing reflective signs in underground mines, comprising a fixing base plate (1), characterized in that: The upper surface of the fixed base plate (1) is provided with a fixing hole (5). An expansion wire (6) is slidably arranged in the fixing hole (5). A hollow expansion tube (2) is sleeved on the outside of the expansion wire (6). A rubber sleeve (3) is sleeved on the upper and lower parts of the hollow expansion tube (2). The two rubber sleeves (3) are fixedly connected to the two ends of the telescopic spring (4) on their side that are close to each other. A baffle (7) is fixedly connected to the lower part of the expansion wire (6). The baffle (7) is fixedly connected to the bottom end of the expansion tube (2) and is in contact with the bottom surface of the rubber sleeve (3). A buffer washer (9) is sleeved on the upper part of the expansion wire (6). The bottom surface of the buffer washer (9) is in contact with the upper surface of the fixed base plate (1). A hexagonal anti-loosening nut (8) is threaded to the upper end of the expansion wire (6). The bottom surface of the hexagonal anti-loosening nut (8) is in contact with the upper surface of the buffer washer (9).

2. The reflective sign fixing device for underground mines according to claim 1, characterized in that: The top ends of the hollow expansion tube (2) and the rubber sleeve (3) are in contact with the bottom surface of the fixed base plate (1), and the inner wall of the telescopic spring (4) is in contact with the outer surface of the hollow expansion tube (2).

3. The reflective sign fixing device for underground mines according to claim 1, characterized in that: The upper surface of the fixed base plate (1) is fixedly connected to a limiting platform (10). The limiting platform (10) is provided with an adjustment mounting groove (11). Two mounting moving blocks (12) are slidably connected inside the adjustment mounting groove (11). The bottom surface of each mounting moving block (12) is in contact with the upper surface of the fixed base plate (1). The inner wall of each mounting moving block (12) is fixedly connected with a mounting fixing nut (13).

4. The reflective sign fixing device for underground mines according to claim 3, characterized in that: An L-shaped load-bearing bracket (14) is connected above the limiting platform (10). The L-shaped load-bearing bracket (14) is threadedly connected to two mounting nuts (13) by two mounting bolts (15). The lower ends of the two mounting bolts (15) pass through the L-shaped load-bearing bracket (14) and the mounting nuts (13) in sequence and extend to the bottom of the mounting moving block (12).

5. The reflective sign fixing device for underground mines according to claim 4, characterized in that: The upper part of the L-shaped load-bearing bracket (14) is slidably connected to an extension plate (16), the upper end of the extension plate (16) is fixedly connected to an extension block (20), the front side of the extension block (20) is fixedly connected to an adjustment slide rail (21), the inside of the adjustment slide rail (21) is slidably engaged with an adjustment slider (22), the front side of the adjustment slider (22) is fixedly connected to an installation frame (18), and the inside of the installation frame (18) is engaged with a reflective sign body (19).

6. The reflective sign fixing device for underground mines according to claim 5, characterized in that: Both the extension plate (16) and the L-shaped load-bearing bracket (14) are provided with pin holes, and the positioning pin (17) passes through the pin holes on the L-shaped load-bearing bracket (14) and the extension plate (16) in succession.

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