Mining anti-explosion sealing ring tapping device

Abstract

The invention relates to the technical field of anti-explosion equipment, and discloses a mining anti-explosion sealing ring trepanning device which comprises a mounting structure and a plurality of cutting strips, the mounting structure is used for being fixed to the anti-explosion equipment, a plurality of sliding ways are formed in the mounting structure, stop blocks are arranged on the cutting strips, the stop blocks are arranged on the sliding ways in a sliding mode, and the cutting strips are arranged on the sliding ways in a sliding mode. According to the anti-explosion device, firstly, the installation structure is installed on the anti-explosion device, then a worker inserts a stop block into the sliding way, the cutting strip can abut against the sealing ring, then the worker can knock the stop block, the stop block pushes the cutting strip to cut the sealing ring, and therefore the sealing ring can be stably holed; the situation that the inner diameter of the hole is uncontrollable when a worker manually opens the hole is avoided, so that the sealing ring can abut against the cable, and the explosion-proof effect of the sealing ring is achieved.

Description

Technical Field

[0001] This application relates to the technical field of explosion-proof equipment, and in particular to a hole-opening device for an explosion-proof sealing ring used in mining. Background Technology

[0002] Explosion-proof switches for mining are electrical switching devices that can operate safely in explosive gas environments such as methane and coal dust. Explosion-proof sealing rings are installed at the inlet and outlet of the explosion-proof switch. The initial hole of the sealing ring is very small. The sealing ring has a small initial hole pre-drilled at the factory. When wiring underground, the initial hole needs to be enlarged according to the actual outer diameter of the cable to reliably tighten the cable and thus meet the explosion-proof requirements.

[0003] Because mining explosion-proof sealing rings are mostly made of high-hardness, high-elasticity rubber or similar flame-retardant materials, their material is relatively thick and has high hardness. In addition, the underground working space is limited and the environment is complex. Workers rely solely on experience to apply force, which can easily lead to the opening size being too large. When the hole diameter is larger than the outer diameter of the cable, the sealing ring cannot form effective radial compression, resulting in the explosion-proof surface gap exceeding the standard and losing its explosion-proof performance. Summary of the Invention

[0004] To address the issue of excessively large openings during manual drilling by workers, this application provides a drilling device for explosion-proof sealing rings used in mining.

[0005] This application provides a mining explosion-proof sealing ring opening device, which adopts the following technical solution: A hole-cutting device for explosion-proof sealing rings in mining includes an installation structure and multiple cutting strips. The installation structure is used to fix the device to the explosion-proof equipment. Multiple slides are provided on the installation structure. The cutting strips are provided with stop blocks. The stop blocks are slidably disposed on the slides. The cutting strips are used to cut the sealing rings.

[0006] By adopting the above technical solution, the installation structure is first installed on the explosion-proof equipment. Then, the staff inserts the stop block into the slide rail so that the cutting strip can abut against the sealing ring. After that, the staff can tap the stop block to push the cutting strip to cut the sealing ring, so that the sealing ring can be stably opened. This avoids the situation where the inner diameter of the hole is uncontrollable when the staff manually opens the hole, so that the sealing ring can press against the cable to achieve the explosion-proof effect of the sealing ring.

[0007] Optionally, the mounting structure is provided with a striking plate, and multiple fixing blocks are slidably connected to the striking plate. The fixing blocks have fixing grooves for inserting stop blocks. When the stop blocks are inserted into the fixing grooves, the striking plate is fixed to the stop blocks.

[0008] By adopting the above technical solution, the stop blocks are inserted into the fixing groove, allowing the striking plate to fix multiple stop blocks. Then, the workers use tools to continuously strike the striking plate, so that the striking plate can move multiple stop blocks at one time, allowing multiple cutting strips to cut the sealing ring, thereby speeding up the cutting speed of the sealing ring.

[0009] Optionally, both the fixing block and the stop block are made of magnetic material, and the fixing block and the stop block attract each other.

[0010] By adopting the above technical solution, the fixed block and the stop block can be attracted to each other, enabling the workers to quickly align the fixed block and the stop block, thereby reducing the difficulty of aligning the stop block and the fixed block and facilitating the workers to quickly install the striking plate and multiple stop blocks together.

[0011] Optionally, the mounting structure includes a mounting ring and a support frame, the support frame being used to fix it to the explosion-proof equipment, the mounting ring being rotatably connected to the support frame, and the slide rail being disposed on the mounting ring.

[0012] By adopting the above technical solution, the device is fixed to the explosion-proof equipment by a support frame, and then the mounting ring is rotatably connected to the support frame. The operator adjusts the rotation angle of the mounting ring so that the cutting strip can cut the sealing ring at different angles to achieve complete cutting of the sealing ring.

[0013] Optionally, the cutting strip has a guide surface along its thickness, the guide surface being located on the side of the cutting strip away from the other cutting strip, and the thickness of the cutting strip gradually increases along the direction from the cutting strip to the stop block.

[0014] By adopting the above technical solution, since the thickness of the cutting strip gradually decreases towards the cutting edge, the thin cutting edge facilitates penetration when cutting into high-hardness rubber. As the cutting depth increases, the gradually thickening structure at the rear can "spread" the material, reducing the frictional resistance of the material against the side wall of the cutting strip. During manual tapping or rotary cutting, the guide surface and the cut portion form a stable support surface, which plays a "straightening" role, ensuring that the cutting strip feeds in a straight radial direction. At the same time, the sealing ring after the guide surface is cut can form an inclined surface, allowing the sealing ring to tilt towards the cable, so as to enhance the sealing effect of the sealing ring on the cable.

[0015] Optionally, the cutting strip has a cutting bevel on its surface along its width, and the width of the cutting strip gradually increases along the direction from the cutting strip to the axis of the sealing ring.

[0016] By adopting the above technical solution, a bevel is set in the width direction, making the front end (edge) of the cutting bar form a sharp wedge angle. Compared with a straight cutting bar, this structure significantly reduces the initial pressure required to cut into the sealing ring, making it particularly suitable for scenarios where manual operation in confined underground spaces is limited in strength. The presence of the bevel allows the cutting bar to remove material by "shearing" rather than tearing when rotating circumferentially, so that the operator can rotate the mounting ring, eliminating the need for two adjacent cutting bars to repeat the cutting action. Simply rotating the mounting ring allows the cutting bar to rotate in the direction of the other cutting bar, enabling the cutting bar to stably achieve rotational cutting of the sealing ring.

[0017] Optionally, the support frame is provided with a rotating groove that extends circumferentially along the support frame. A rotating inclined surface is provided on the bottom wall of the rotating groove. The depth of the rotating groove gradually increases along the extension direction of the rotating groove. The outer diameter of the striking plate is larger than the outer diameter of the mounting ring. The striking plate is provided with a rotating block for inserting into the rotating groove.

[0018] By adopting the above technical solution, when the worker strikes the striking plate, the outer diameter of the striking plate is larger than the outer diameter of the mounting ring, allowing the rotating block to be inserted into the rotating groove. The rotating block slides along the rotating inclined plane in the rotating groove, allowing the striking plate to rotate on the support frame. The worker can then rotate the striking plate by applying force in the direction of the strike, reducing the difficulty of rotating the striking plate and making it easier for the worker to rotate the striking plate quickly and conveniently.

[0019] Optionally, the rotating block is provided with a limiting block, and the bottom wall of the rotating groove is provided with a limiting groove for the limiting block to be inserted; when the limiting block is inserted into the limiting groove, the striking plate is fixed on the support frame.

[0020] By adopting the above technical solution, the limiting block is inserted into the limiting groove, so that the groove wall of the limiting groove can restrict the movement of the limiting block, making it difficult for the rotating block to slide in the rotating groove. That is, the striking plate can be fixed on the support frame, so that the striking plate can restrict the movement of the cutting strip and the mounting ring, so that the hole-opening device will not separate during transportation.

[0021] In summary, this application includes at least one of the following beneficial technical effects: First, the mounting structure is installed on the explosion-proof equipment. Then, the worker inserts the stop block into the slide rail so that the cutting strip can abut against the sealing ring. After that, the worker can tap the stop block to push the cutting strip to cut the sealing ring, so that the sealing ring can be stably opened. This avoids the situation where the inner diameter of the hole is uncontrollable when the worker manually opens the hole, so that the sealing ring can press against the cable to achieve the explosion-proof effect of the sealing ring.

[0022] By setting a bevel along the width, the cutting edge (edge) of the cutting bar forms a sharp wedge angle. Compared to a straight cutting bar, this structure significantly reduces the initial pressure required to cut into the sealing ring, making it particularly suitable for scenarios where manual operation in confined downhole spaces is limited in strength. The presence of the bevel allows the cutting bar to remove material by "shearing" rather than tearing when rotating circumferentially. This facilitates the operator's rotation of the mounting ring, eliminating the need for repeated cutting between adjacent cutting bars. Simply rotating the mounting ring directs the cutting bar towards the other cutting bar, enabling stable rotational cutting of the sealing ring. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram highlighting the mounting ring in the embodiments of this application; Figure 3 This is an exploded view of the cutting strip in the embodiments of this application; Figure 4 This is a schematic diagram highlighting the structure of the striking plate in the embodiments of this application; Figure 5 This is a schematic diagram highlighting the rotating groove in an embodiment of this application.

[0024] Reference numerals in the attached drawings: 1. Installation structure; 11. Installation ring; 111. Installation strip; 112. Slide rail; 113. First through hole; 12. Support frame; 121. Support strip; 13. Striking plate; 131. Moving groove; 132. Fixing block; 133. Fixing groove; 134. Second through hole; 14. Rotating block; 141. Rotating groove; 142. Rotating inclined surface; 143. Limiting block; 144. Limiting groove; 2. Cutting strip; 21. Stopping block; 22. Guide surface; 23. Cutting inclined surface. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0026] This embodiment discloses a hole-opening device for explosion-proof sealing rings used in mining. (Refer to...) Figure 1 A hole-opening device for explosion-proof sealing rings in mining includes an installation structure 1 and multiple cutting strips 2. The installation structure 1 is used for installation on explosion-proof equipment, and the cutting strips 2 are used for cutting the sealing rings.

[0027] Reference Figure 2The mounting structure 1 includes a mounting ring 11 and a support frame 12. The support frame 12 is detachably connected to the explosion-proof equipment and is fitted onto the sealing ring. The mounting ring 11 is rotatably connected to the support frame 12. Multiple mounting strips 111 are integrally formed on the inner wall of the mounting ring 11, and these mounting strips 111 are arranged in a crisscross pattern. In this application, two mounting strips 111 are provided, and the two mounting strips 111 are arranged perpendicular to each other; in other embodiments, they may be at other angles. A slide rail 112 is provided on the mounting strip 111, and the slide rail 112 extends along the length direction of the mounting strip 111.

[0028] Reference Figure 2 A support bar 121 is fixedly connected to the surface of the support frame 12. A first through hole 113 is provided on the mounting ring 11, through which the support bar 121 passes, and the first through hole 113 extends circumferentially along the mounting ring 11. The support bar 121 passes through the first through hole 113 to enable the mounting ring 11 to rotate on the support frame 12.

[0029] Reference Figure 2 A stop block 21 is fixedly connected to the surface of the cutting strip 2, and the stop block 21 can slide on the slide 112. The cutting strip 2 extends along the thickness direction of the sealing ring, and the width of the cutting strip 2 is smaller than the width of the stop block 21, that is, the cutting strip 2 can pass through the slide 112 while the stop block 21 cannot pass through the slide 112. When the operator passes the cutting strip 2 through the slide 112 from the direction away from the sealing ring and abuts it against the sealing ring, the stop block 21 can be located on the slide 112.

[0030] Reference Figure 3 The cutting strip 2 has a guide surface 22 on its surface along its thickness. The guide surface 22 is located on the side of the cutting strip 2 away from the other cutting strip 2. The thickness of the cutting strip 2 gradually increases along the direction from the cutting strip 2 to the stop block 21.

[0031] Reference Figure 3 The cutting strip 2 has two cutting bevels 23 on its surface along its width, and the two cutting bevels 23 are respectively disposed on the surfaces of opposite sides of the cutting strip 2. The width of the cutting strip 2 gradually increases along the direction from the cutting strip 2 to the axis of the sealing ring.

[0032] Reference Figure 2 and Figure 3 When the cutting strip 2 is inserted into the sealing ring, the guide surface 22 cuts the sealing ring, allowing the sealing ring to deform in the direction of the inner diameter, so that the sealing ring can be clamped in the direction of the cable, thereby enhancing the explosion-proof effect of the sealing ring. When the operator rotates the mounting ring 11, the mounting ring 11 drives the cutting strip 2 to move. The cutting bevel 23 can cut the sealing ring more stably, so that the operator does not need to pull out the cutting strip 2 again and adjust the position of the mounting ring 11 before inserting the cutting strip 2 to cut the sealing ring.

[0033] Reference Figure 4 The installation structure 1 is equipped with a striking plate 13, which has multiple moving slots 131. Each moving slot 131 corresponds to a slide rail 112, and the extending direction of the moving slots 131 is the same as that of the slide rails 112. Multiple fixing blocks 132 are slidably connected within the moving slots 131. Fixing slots 133 are formed on the surface of each fixing block 132 for inserting a stop block 21. Both the stop block 21 and the fixing blocks 132 are made of magnets, allowing the fixing blocks 132 to attract the stop blocks 21, ensuring the stop blocks 21 are stably positioned within the fixing slots 133. This facilitates quick and stable fixation of the stop blocks 21 and the fixing blocks 132 by the operator.

[0034] Reference Figure 2 and Figure 4 The striking plate 13 has a second through hole 134 extending circumferentially along the striking plate 13, through which the support bar 121 passes. When the support bar 121 passes through the second through hole 134, the striking plate 13 can move in a direction close to or away from the support frame 12, or the striking plate 13 can rotate on the support frame 12.

[0035] Reference Figure 4 and Figure 5 The outer diameter of the striking plate 13 is larger than the outer diameter of the mounting ring 11, and a rotating block 14 is fixedly connected to the end face of the striking plate 13. A rotating groove 141 is formed on the outer surface of the support frame 12, extending circumferentially along the mounting ring 11, and the rotating block 14 is inserted into the rotating groove 141. A rotating inclined surface 142 is formed on the bottom wall of the rotating groove 141, and the rotating inclined surface 142 is inclined along the extension direction of the rotating groove 141, that is, the distance between the rotating inclined surface 142 and the opening of the rotating groove 141 gradually increases along the circumferential direction of the support frame 12, and the rotating inclined surface 142 is located on the moving path of the rotating block 14.

[0036] Reference Figure 2 and Figure 5 When the staff uses a tool to strike the striking plate 13, the striking plate 13 drives the cutting strip 2 to cut the sealing ring until the rotating block 14 is located in the rotating groove 141. At this time, since the cutting strip 2 has completed the cutting of the sealing ring, the mounting ring 11 abuts against the support frame 12, and there is a gap between the mounting ring 11 and the striking plate 13. The workers continued to tap the tapping plate 13, causing the rotating block 14 to move along the rotating inclined plane 142. This allowed the tapping plate 13 to drive the mounting ring 11 to rotate, enabling the tapping plate 13 to drive the cutting strip 2 to cut the sealing ring. This eliminated the need for the workers to remove the cutting strip 2 from the sealing ring and rotate the mounting ring 11 to cut the sealing ring again, thus allowing the sealing ring to be cut out quickly.

[0037] Reference Figure 5 A limiting block 143 is fixedly connected to the surface of the striking plate 13, and a limiting groove 144 is provided on the groove wall of the rotating groove 141 for the limiting block 143 to be inserted. When the limiting block 143 is inserted into the limiting groove 144, the striking plate 13 is fixed to the support frame 12.

[0038] The implementation principle of the mining explosion-proof sealing ring opening device in this embodiment is as follows: the worker first inserts the cutting strip 2 into the sealing ring, then inserts the stop block 21 into the fixing groove 133, so that the cutting strip 2 can be fixed on the striking plate 13. Finally, the worker continuously strikes the striking plate 13, so that the striking plate 13 can smoothly apply force to the cutting strip 2, so that the cutting strip 2 can cut the sealing ring.

[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A hole-opening device for an explosion-proof sealing ring used in mining, characterized in that: It includes an installation structure (1) and multiple cutting strips (2). The installation structure (1) is used to fix it to the explosion-proof equipment. Multiple slides (112) are provided on the installation structure (1). The cutting strips (2) are provided with stop blocks (21). The stop blocks (21) are slidably disposed on the slides (112). The cutting strips (2) are used to cut the sealing ring.

2. The mining explosion-proof sealing ring opening device according to claim 1, characterized in that: The mounting structure (1) is provided with a striking plate (13), and a plurality of fixing blocks (132) are slidably connected on the striking plate (13). The fixing blocks (132) have fixing grooves (133) for inserting the stop blocks (21). When the stop blocks (21) are inserted into the fixing grooves (133), the striking plate (13) is fixed on the stop blocks (21).

3. The mining explosion-proof sealing ring opening device according to claim 2, characterized in that: The fixing block (132) and the stop block (21) are both made of magnetic material, and the fixing block (132) and the stop block (21) attract each other.

4. The mining explosion-proof sealing ring opening device according to claim 2, characterized in that: The mounting structure (1) includes a mounting ring (11) and a support frame (12). The support frame (12) is used to fix it to the explosion-proof equipment. The mounting ring (11) is rotatably connected to the support frame (12). The slide rail (112) is provided on the mounting ring (11).

5. The mining explosion-proof sealing ring opening device according to claim 4, characterized in that: The cutting strip (2) has a guide surface (22) on its thickness surface. The guide surface (22) is located on the side of the cutting strip (2) away from the other cutting strip (2). The thickness of the cutting strip (2) gradually increases along the direction from the cutting strip (2) to the stop block (21).

6. The mining explosion-proof sealing ring opening device according to claim 4, characterized in that: The cutting strip (2) has a cutting bevel (23) on its surface along its width, and the width of the cutting strip (2) gradually increases along the direction from the cutting strip (2) to the axis of the sealing ring.

7. The mining explosion-proof sealing ring opening device according to claim 6, characterized in that: The support frame (12) is provided with a rotating groove (141) that extends circumferentially along the support frame (12). A rotating inclined surface (142) is provided on the bottom wall of the rotating groove (141). The depth of the rotating groove (141) gradually increases along the extension direction of the rotating groove (141). The outer diameter of the striking plate (13) is larger than the outer diameter of the mounting ring (11). The striking plate (13) is provided with a rotating block (14) for inserting into the rotating groove (141).

8. The mining explosion-proof sealing ring opening device according to claim 7, characterized in that: The rotating block (14) is provided with a limiting block (143), and the bottom wall of the rotating groove (141) is provided with a limiting groove (144) for the limiting block (143) to be inserted; when the limiting block (143) is inserted into the limiting groove (144), the striking plate (13) is fixed on the support frame (12).

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