Automatic opening and closing device for coal mine water sump cover

Abstract

This application relates to the technical field of auxiliary operating devices for underground coal mine equipment, and discloses an automatic opening and closing device for an underground coal mine water tank cover. The device includes a water tank, a control component installed outside the water tank, and a flip-top mechanism installed inside the water tank. The flip-top mechanism includes a drive component, the output end of which is rotatably connected to a hollow connecting shaft with a disc hinge. Disc hinges are fixedly connected to both ends of the hollow connecting shaft, and a disc hinge fixing flange is fixedly connected inside each disc hinge. This invention replaces manual handling with automated drive, completely avoiding close-range force contact between operators and the heavy cover, thus eliminating the risk of personal injury and equipment damage caused by the cover falling or bumping. Simultaneously, the limiting structure equipped in the device can precisely control the movement trajectory of the cover, effectively avoiding the cover eaves above the water tank, further improving the safety and reliability of underground operations.

Description

Technical Field

[0001] This invention relates to the technical field of auxiliary operating devices for underground coal mine equipment, specifically an automatic opening and closing device for underground coal mine water tank covers. Background Technology

[0002] In underground coal mine production systems, the cooling water tanks of some core mining equipment are crucial subsystems for ensuring the thermal balance and continuous operation of the equipment. Furthermore, underground water trucks typically have water tank covers on top of these tanks. These water tank covers, as core sealing and protective components, must simultaneously meet stringent requirements for impact resistance, dust intrusion prevention, and static pressure resistance. Therefore, they are generally made of Q345B thick steel plates welded together. Currently, these water tank covers are still primarily opened and closed manually, which presents technical challenges due to the limitations of the underground environment and structure.

[0003] Coal mine underground water tanks require regular water replenishment and sediment removal, resulting in frequent opening and closing of the water tank covers. Manual opening and closing requires multiple operators, and each operation is typically time-consuming. This inefficient operation not only consumes the core equipment's operating time but also easily leads to equipment shutdowns due to untimely water replenishment.

[0004] Meanwhile, the operating space around the underground water tank is often less than one meter, and the overhead pipelines are dense, making it difficult for manual handling of the cover and prone to collisions with the equipment. The slippery ground also poses a high risk of the cover falling, which could damage the equipment and cause personal injury.

[0005] The existing structure has poor adaptability and cannot meet the special needs of the well. The purely vertical lifting mechanism on the ground requires a lot of space above the water tank, which conflicts with the layout of the well pipeline; the cover of the horizontal flipping structure is too long and is easy to bump into adjacent equipment; the manual assistance structure still does not solve the problem of operation in narrow spaces. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an automatic opening and closing device for underground water tank covers in coal mines, solving the problem of lacking a dedicated water tank cover opening and closing solution adapted to underground working conditions, and developing a device that meets the requirements of explosion-proof, narrow space adaptation, safety and efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic opening and closing device for a coal mine underground water tank cover, comprising a water tank, a control component installed outside the water tank, and a flip-top mechanism installed inside the water tank; The flip-top mechanism includes a drive assembly. The output end of the drive assembly is rotatably connected to a hollow connecting shaft with a disc hinge. Disc hinges are fixedly connected to both ends of the hollow connecting shaft. A disc hinge fixing flange is fixedly connected inside each disc hinge. A disc hinge fixing sleeve is rotatably connected inside the fixing flange. A fixing buckle is fixedly connected to the outside of the fixing sleeve. An input power connecting rod is rotatably connected to the lower side of the disc hinge. A Z-shaped connecting rod is rotatably connected to the front end of the input power connecting rod. A Z-shaped connecting rod fixing hinge is rotatably connected to the top end of the Z-shaped connecting rod. A grooved cover plate is fixedly connected between the two Z-shaped connecting rod fixing hinges. Two support connecting rod fixing hinges are fixedly connected to the bottom of the grooved cover plate. A support connecting rod is rotatably connected to the bottom of each support connecting rod fixing hinge. Z-shaped connecting rod hinge points are installed at the bottom of the support connecting rod and inside the Z-shaped connecting rod. A connecting rod fixing flange is installed between the two Z-shaped connecting rod hinge points on the same side.

[0008] Preferably, the bottom of the grooved cover plate and the top of the water tank abut against each other, and in the disc hinge, the mounting position of the hollow connecting shaft of the disc hinge and the mounting position of the input power connecting rod are opposite in direction.

[0009] Preferably, the disc hinge fixing flange is externally fixedly connected to the inner wall of the water tank, and the fixing buckle is externally fixedly connected to the inner wall of the water tank.

[0010] Preferably, the Z-shaped connecting rod fixing hinge and the supporting connecting rod fixing hinge are always at the same horizontal height, and the Z-shaped connecting rod hinge joint on the Z-shaped connecting rod and the Z-shaped connecting rod on the supporting connecting rod are always at the same horizontal height.

[0011] Preferably, a Z-shaped link fulcrum is installed in the middle of the Z-shaped link, and a hollow Z-shaped link connecting shaft is fixedly connected between the two Z-shaped link fulcrums. The hollow Z-shaped link connecting shaft passes through and is fixedly connected to the inside of the Z-shaped link.

[0012] Preferably, the distance between the two Z-shaped link hinge points on the same side is equal to the installation distance between the Z-shaped link fixing hinge and the support link fixing hinge on the same side.

[0013] Preferably, the drive assembly includes a cylinder fixing flange, a cylinder is rotatably connected to the inner side of the cylinder fixing flange, the cylinder surface is respectively provided with a rodless cylinder chamber and a rod cylinder chamber, a piston rod is fixedly connected to the output end of the cylinder, a collar is installed inside the piston rod, and the collar is rotatably connected to the outside of the hollow connecting shaft of the disc hinge.

[0014] Preferably, the control component includes a manual directional valve, which is externally mounted on the outside of the water tank, and has rodless chamber oil passage and rod chamber oil passage respectively installed on the outside of the manual directional valve.

[0015] Preferably, the rodless chamber oil circuit is connected to the rod chamber of the cylinder, and the rod chamber oil circuit is connected to the rodless chamber of the cylinder.

[0016] Preferably, the rod-type oil passage extends through the top of the water tank, and the rodless oil passage also extends through the top of the water tank.

[0017] This invention provides an automatic opening and closing device for underground water sump covers in coal mines. It has the following beneficial effects: 1. This invention replaces manual handling with automated drive, completely avoiding close contact between operators and the heavy cover, eliminating the risk of personal injury and equipment damage caused by the cover falling or bumping. Simultaneously, the limiting structure equipped with the device can control the movement trajectory of the cover, effectively avoiding the cover's eaves above the water tank, further improving the safety and reliability of underground operations.

[0018] 2. The parallelogram mechanism inside the water tank, with its equal-length connecting rods, ensures that the cover remains stable throughout the entire process of oblique lifting and translational avoidance, preventing the heavy cover from swaying due to a shift in the center of gravity. Simultaneously, it eliminates the need for a large vertical space above the water tank and prevents collisions with adjacent equipment due to cover extension, perfectly adapting to the characteristics of narrow working spaces and dense equipment layouts in underground wells.

[0019] 3. This invention changes the operation mode of heavy water tank cover relying on manual handling. Operators only need to control the reversing valve to complete the opening and closing operation, which reduces the labor intensity of downhole auxiliary operations. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of the closed state of the present invention; Figure 2 This is a side view of the internal cross-section of the present invention in its closed state; Figure 3 This is an overall schematic diagram of the hydraulic cylinder of the present invention; Figure 4 This is a schematic diagram of the internal structure of the invention in its fully open state; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0021] The components are as follows: 1. Water tank; 2. Grooved cover plate; 3. Manual directional valve; 4. Rodless chamber of hydraulic cylinder; 5. Rod chamber of hydraulic cylinder; 6. Hydraulic cylinder fixing flange; 7. Hydraulic cylinder; 8. Collar; 9. Input power connecting rod; 10. Z-type connecting rod; 11. Connecting rod fixing flange; 12. Support connecting rod; 13. Z-type connecting rod fixing hinge; 14. Support connecting rod fixing hinge; 15. Piston rod; 16. Hollow connecting shaft of disc hinge; 17. Hollow connecting shaft of Z-type connecting rod; 18. Fixing buckle; 19. Disc hinge; 20. Disc hinge fixing sleeve; 21. Disc hinge fixing flange; 22. Z-type connecting rod hinge joint; 23. Z-type connecting rod fulcrum; 24. Rodless chamber oil passage; 25. Rod chamber oil passage. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 4 Appendix Figure 5 The present invention provides an automatic opening and closing device for a coal mine underground water tank cover, including a water tank 1, a control component installed on the outside of the water tank 1, and a flip-top mechanism installed inside the water tank 1. The water tank 1 is used to store water. The flip mechanism includes a drive assembly. The output end of the drive assembly is rotatably connected to a hollow connecting shaft 16 with a disc hinge. Disc hinges 19 are fixedly connected to both ends of the hollow connecting shaft 16. A disc hinge fixing flange 21 is fixedly connected inside the disc hinge 19. A disc hinge fixing sleeve 20 is rotatably connected inside the disc hinge fixing flange 21. A fixing buckle 18 is fixedly connected to the outside of the disc hinge fixing sleeve 20. An input power connecting rod 9 is rotatably connected to the lower side of the disc hinge 19. The front end of the input power connecting rod 9 is rotatably connected to… A Z-shaped connecting rod 10 is connected, with a Z-shaped connecting rod fixing hinge 13 rotatably connected to the top of the Z-shaped connecting rod 10. A grooved cover plate 2 is fixedly connected between the two Z-shaped connecting rod fixing hinges 13. Two support connecting rod fixing hinges 14 are fixedly connected to the bottom of the grooved cover plate 2. A support connecting rod 12 is rotatably connected to the bottom of the support connecting rod fixing hinge 14. Z-shaped connecting rod hinge joints 22 are installed at the bottom of the support connecting rod 12 and inside the Z-shaped connecting rod 10. A connecting rod fixing flange 11 is installed between the two Z-shaped connecting rod hinge joints 22 on the same side. A disc hinge is also present. The hollow connecting shaft 16 drives the disc hinge 19 to rotate. The disc hinge 19 is used to pull the input power connecting rod 9 to move. The disc hinge fixing flange 21 is used to support the disc hinge 19. The disc hinge fixing sleeve 20 is used to keep the disc hinge 19 stable. The fixing buckle 18 is used to fix the disc hinge fixing sleeve 20, thereby preventing the disc hinge 19 from falling off. The input power connecting rod 9 is used to pull the Z-shaped connecting rod 10 to move. The Z-shaped connecting rod 10 is used to push the grooved cover plate 2 upward. The Z-shaped connecting rod fixing hinge 13 is used to hold the Z-shaped connecting rod 10... Installed at the bottom of the grooved cover plate 2, the grooved cover plate 2 is used to cover the water tank 1 to prevent debris from falling into the water tank 1. The support connecting rod fixing hinge 14 is used to connect the support connecting rod 12 to the bottom of the grooved cover plate 2. The support connecting rod 12 is used to limit the stroke of the grooved cover plate 2. The Z-shaped connecting rod hinge point 22 is used to provide a fulcrum for the grooved cover plate 2, so that the straight distance between the two Z-shaped connecting rod hinge points 22 and the Z-shaped connecting rod fixing hinge 13 and the support connecting rod fixing hinge 14 forms a parallelogram, thereby allowing the grooved cover plate 2 to move horizontally and obliquely without tilting.

[0024] The bottom of the grooved cover plate 2 abuts against the top of the water tank 1 to prevent debris from falling into the water tank 1. In the disc hinge 19, the mounting position of the hollow connecting shaft 16 of the disc hinge and the mounting position of the input power connecting rod 9 are opposite, so that if one moves, the other will move in the opposite direction.

[0025] The disc hinge fixing flange 21 is externally fixedly connected to the inner wall of the water tank 1, and the fixing buckle 18 is externally fixedly connected to the inner wall of the water tank 1, so that the disc hinge fixing flange 21 and the fixing buckle 18 remain stable.

[0026] The Z-type connecting rod fixed hinge 13 and the support connecting rod fixed hinge 14 are always at the same horizontal height. The Z-type connecting rod hinge node 22 on the Z-type connecting rod 10 and the Z-type connecting rod 10 on the support connecting rod 12 are always at the same horizontal height, so that a parallelogram is formed between the nodes, which allows the grooved cover plate 2 to move obliquely horizontally.

[0027] A Z-type link fulcrum 23 is installed in the middle of the Z-type link 10. A Z-type link hollow connecting shaft 17 is fixedly connected between the two Z-type link fulcrums 23. The Z-type link hollow connecting shaft 17 passes through and is fixedly connected to the inside of the Z-type link 10. The Z-type link fulcrum 23 is used to fix the Z-type link hollow connecting shaft 17. The Z-type link hollow connecting shaft 17 is used to connect the two Z-type links 10 together, so that the two Z-type links 10 move synchronously and prevent the grooved cover plate 2 from tilting.

[0028] The distance between the two Z-shaped link hinge points 22 on the same side is equal to the installation distance between the Z-shaped link fixed hinge 13 and the support link fixed hinge 14 on the same side.

[0029] Please see the appendix Figure 3 The drive assembly includes a cylinder fixing flange 6, with a cylinder 7 rotatably connected to the inside of the cylinder fixing flange 6. The cylinder 7 has a rodless chamber 4 and a rod chamber 5 respectively on its surface. A piston rod 15 is fixedly connected to the output end of the cylinder 7. A collar 8 is installed inside the piston rod 15 and is rotatably connected to the outside of the hollow connecting shaft 16 of the disc hinge. The cylinder fixing flange 6 is used to support the cylinder 7, and the cylinder 7 is used to push the piston rod 15 to move. The rodless chamber 4 and the rod chamber 5 of the cylinder enable the output and input ends of the hydraulic oil to control the operation of the cylinder 7. The piston rod 15 is used to push the hollow connecting shaft 16 of the disc hinge to move, and the collar 8 is used to ensure that the contact surface with the piston rod 15 remains smooth when pushing the hollow connecting shaft 16 of the disc hinge, avoiding jamming.

[0030] The control components include a manual directional valve 3, which is externally mounted on the outside of the water tank 1. A rodless chamber oil passage 24 and a rod chamber oil passage 25 are respectively installed on the outside of the manual directional valve 3. The manual directional valve 3 is used to manually control the flow direction of hydraulic oil, thereby controlling the extension or retraction of the cylinder 7. The rodless chamber oil passage 24 and the rod chamber oil passage 25 are used to transport hydraulic oil.

[0031] The rodless chamber oil passage 24 is connected to the rod chamber 5 of the cylinder, and the rod chamber oil passage 25 is connected to the rodless chamber 4 of the cylinder. Hydraulic oil is delivered into the cylinder 7 through the rod chamber 5 or the rodless chamber 4 of the cylinder via the rodless chamber oil passage 24 and the rod chamber oil passage 25, thereby controlling the operation of the cylinder 7.

[0032] The rod chamber oil passage 25 extends through the top of the water tank 1, and the rodless chamber oil passage 24 extends through the top of the water tank 1, so that the rod chamber oil passage 25 and the rodless chamber oil passage 24 remain stable.

[0033] Working principle: When water needs to be injected into water tank 1, the manual reversing valve 3 is manually operated to allow hydraulic oil to enter cylinder 7 through the rodless chamber oil passage 24 and the rod chamber 5 of the cylinder, controlling the extension of cylinder 7. This causes the piston rod 15 to push the hollow connecting shaft 16 of the disc hinge to move. Simultaneously, under the connection and support of the disc hinge fixing flange 21 and the fixing buckle 18, the hollow connecting shaft 16 of the disc hinge drives the disc hinge 19 to rotate axially along the disc hinge fixing flange 21. The disc hinge 19 then pulls the input power connecting rod 9 to move. Supported by flange 11, input power link 9 pulls Z-type link 10 to rotate axially along Z-type link hinge point 22. Simultaneously, under the action of Z-type link hollow connecting shaft 17, both Z-type links 10 push upward on the grooved cover plate 2. Under the traction of support link 12 connected by support link fixed hinge 14, the grooved cover plate 2 will move obliquely and parallel until support link 12 is about to contact the edge of water tank 1's water inlet. At this time, manual reversing valve 3 is closed, and the grooved cover plate 2 is fully opened. Water can then be injected into water tank 1 through the water inlet.

[0034] After water filling is complete, manually reverse the direction of the valve 3 to allow hydraulic oil to enter the rodless chamber 4 of the cylinder along the rod chamber oil passage 25. This controls the cylinder 7 to shorten, thereby pulling the hollow connecting shaft 16 of the disc hinge, causing the disc hinge 19 to rotate in the opposite direction. This pushes the input power connecting rod 9 to drive the Z-type connecting rod 10 to rotate in the opposite direction along the Z-type connecting rod hinge joint 22, thereby pulling the grooved cover 2 back onto the top of the water tank 1. At this point, simply reverse the direction of the valve 3 to close it. Dust and debris will not contaminate the water inside the water tank 1. The grooved cover 2 is easy to open and close, effectively improving water filling efficiency.

Claims

1. An automatic opening and closing device for underground water sump covers in coal mines, characterized in that, Includes a water tank (1), with a control component installed on the outside of the water tank (1) and a flip-top mechanism installed inside the water tank (1); The flip mechanism includes a drive assembly. The output end of the drive assembly is rotatably connected to a hollow connecting shaft (16) with a disc hinge. Both ends of the hollow connecting shaft (16) with disc hinges (19) are fixedly connected. A disc hinge fixing flange (21) is fixedly connected inside the disc hinge (19). A disc hinge fixing sleeve (20) is rotatably connected inside the disc hinge fixing flange (21). A fixing buckle (18) is fixedly connected to the outside of the disc hinge fixing sleeve (20). An input power connecting rod (9) is rotatably connected to the lower side of the disc hinge (19). The front end of the input power connecting rod (9) rotates. A Z-shaped connecting rod (10) is connected. The top of the Z-shaped connecting rod (10) is rotatably connected to a Z-shaped connecting rod fixing hinge (13). A grooved cover plate (2) is fixedly connected between the two Z-shaped connecting rod fixing hinges (13). Two support connecting rod fixing hinges (14) are fixedly connected to the bottom of the grooved cover plate (2). A support connecting rod (12) is rotatably connected to the bottom of the support connecting rod (12) and inside the Z-shaped connecting rod (10). A connecting rod fixing flange (11) is installed between the two Z-shaped connecting rod fixing hinges (22) on the same side.

2. The automatic opening and closing device for underground water sump cover in coal mines according to claim 1, characterized in that, The bottom of the grooved cover plate (2) abuts against the top of the water tank (1). In the disc hinge (19), the mounting position of the hollow connecting shaft (16) of the disc hinge is opposite to the mounting position of the input power connecting rod (9).

3. The automatic opening and closing device for underground water sump covers in coal mines according to claim 1, characterized in that, The disc hinge fixing flange (21) is externally fixedly connected to the inner wall of the water tank (1), and the fixing buckle (18) is externally fixedly connected to the inner wall of the water tank (1).

4. The automatic opening and closing device for underground water sump covers in coal mines according to claim 1, characterized in that, The Z-shaped connecting rod fixed hinge (13) and the support connecting rod fixed hinge (14) are always at the same horizontal height, and the Z-shaped connecting rod hinge node (22) on the Z-shaped connecting rod (10) and the Z-shaped connecting rod (10) on the support connecting rod (12) are always at the same horizontal height.

5. The automatic opening and closing device for underground water sump cover in coal mines according to claim 1, characterized in that, A Z-type link fulcrum (23) is installed in the middle of the Z-type link (10). A Z-type link hollow connecting shaft (17) is fixedly connected between the two Z-type link fulcrums (23). The Z-type link hollow connecting shaft (17) passes through and is fixedly connected to the inside of the Z-type link (10).

6. The automatic opening and closing device for underground water sump covers in coal mines according to claim 5, characterized in that, The distance between the two Z-type link hinge points (22) on the same side is equal to the installation distance between the Z-type link fixing hinge (13) and the support link fixing hinge (14) on the same side.

7. The automatic opening and closing device for underground water sump covers in coal mines according to claim 1, characterized in that, The drive assembly includes a cylinder fixing flange (6), a cylinder (7) is rotatably connected to the inside of the cylinder fixing flange (6), the cylinder (7) has a rodless chamber (4) and a rod chamber (5) respectively on its surface, a piston rod (15) is fixedly connected to the output end of the cylinder (7), a collar (8) is installed inside the piston rod (15), and the collar (8) is rotatably connected to the outside of the hollow connecting shaft (16) of the disc hinge.

8. The automatic opening and closing device for underground water sump cover in coal mines according to claim 7, characterized in that, The control component includes a manual reversing valve (3), which is externally installed on the outside of the water tank (1). The manual reversing valve (3) is equipped with a rodless chamber oil passage (24) and a rod chamber oil passage (25) respectively.

9. The automatic opening and closing device for underground water sump cover in coal mines according to claim 8, characterized in that, The rodless chamber oil passage (24) is connected to the rod chamber (5) of the cylinder, and the rod chamber oil passage (25) is connected to the rodless chamber (4) of the cylinder.

10. The automatic opening and closing device for underground water sump covers in coal mines according to claim 8, characterized in that, The rod-type oil passage (25) extends through the top of the water tank (1), and the rodless oil passage (24) extends through the top of the water tank (1).

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