Coal mine wellhead flood prevention gate

Abstract

The present application relates to the technical field of coal mine wellhead flood control, and more particularly to a coal mine wellhead flood control gate, which comprises an upper support frame fixedly installed at a coal mine wellhead, side wall bodies fixedly built on both sides of the coal mine wellhead, a mine interior plate rail and an exterior plate rail connected in sequence from the inside to the outside of the coal mine on the ground between the side wall bodies, and a transition plate rail mechanism installed between the mine interior plate rail and the exterior plate rail, which is used as a flood control gate in rainy weather. The flood control gate structure does not affect the normal use of the entire coal mine wellhead in normal use, and the entire coal mine wellhead can realize normal coal conveying in the normal working state. Meanwhile, the flood control plate rail composed of the mine interior plate rail, the exterior plate rail and the transition plate rail mechanism forms a smooth track, which can effectively ensure the normal operation of the conveying work.

Description

Technical Field

[0001] This invention relates to the field of flood control technology at coal mine shafts, and in particular to a flood control gate for coal mine shafts. Background Technology

[0002] A coal mine shaft opening generally refers to the part where the shaft connects to the surface. The shaft opening is a crucial component of the mining production system, undertaking numerous tasks. The location of the shaft opening is greatly influenced by the terrain. Before the rainy season, in accordance with the coal mine's requirements for flood prevention, traditional shaft opening flood control requires the storage of large quantities of materials and tools, such as red bricks, flood control sandbags, drainage pumps, shovels, and hand-held tools, to prevent rainwater from flowing back into the shaft opening during the flood season.

[0003] The drawback of this traditional flood control method is that it requires a lot of manpower and resources to fill and transport the floodwaters.

[0004] Due to the many shortcomings of traditional flood control methods, in recent years many coal mining units and related design institutes have carried out new designs and reforms for flood control at coal mine entrances.

[0005] For example, patent document CN114233391A discloses an automatic wellhead protection device for preventing flood backflow. Its main structure includes a shell located at the bottom of the mine wellhead. A frame is fixedly installed on the top of the shell, located at the wellhead. A water trough and a baffle groove are formed inside the shell. A partition is installed between the water trough and the floating gate groove, and the bottoms of the water trough and the floating gate groove are connected. A floating gate is slidably fitted inside the floating gate groove. The frame is connected to the floating gate groove, and the floating gate slidably fits within the frame. A linkage mechanism is installed on the top of the frame. A siphon mechanism is fixedly installed on one side of the water trough. The linkage mechanism cooperates with the floating gate, and the siphon mechanism cooperates with the water trough.

[0006] As can be seen from the above patent description, it mainly uses the combination of floating gate and frame to lift the floating gate through buoyancy on rainy days, preventing floodwater from flowing back into the mine from the wellhead. However, this buoyancy protection is not effective in blocking the flood when the rainfall in the early stage does not reach the preset rainfall amount. Therefore, rainwater will enter the wellhead in the early stage, and the overall flood prevention and backflow prevention effect is relatively poor, and the safety and reliability are poor.

[0007] Therefore, in response to the problem of poor flood control performance in existing technologies, this invention proposes a new type of flood control gate for coal mine entrances through research and design, in order to better solve the problems existing in existing technologies. Summary of the Invention

[0008] To solve one of the aforementioned technical problems, the present invention adopts the following technical solution: a flood control gate for a coal mine shaft, comprising an upper support frame fixedly installed at the coal mine shaft opening; side walls fixedly constructed on both sides of the upper support frame at the coal mine shaft opening; an inner mine rail and an outer mine rail sequentially connected from the inside to the outside of the coal mine on the ground between the two side walls; a transition rail mechanism installed between the inner mine rail and the outer mine rail; the transition rail mechanism serves as a transition track connecting the inner mine rail and the outer mine rail during operation, and as a flood control gate in rainy weather; a lower mounting cavity is provided on the ground below the outer end of the transition rail mechanism; a flood control sealing component is installed inside the lower mounting cavity, and the flood control sealing component is used to seal the bottom of the transition rail mechanism in a flood control state.

[0009] The design of this mine shaft floodgate structure does not affect the normal use of the entire mine shaft. Under normal operating conditions, the entire mine shaft can transport coal normally. The floodgate, composed of internal, external, and transition rail mechanisms, forms a smooth track, effectively ensuring normal transport operations. During heavy rain, to ensure the mine shaft is sealed and prevent rainwater from flowing back into the mine, the transition rail mechanism can be manually or remotely activated to start an external high-torque rotating power component. This drives the corresponding rotating power shaft and the fixed floodgate to rotate, changing from a horizontal to a vertical position. In this state, it functions as a floodgate, with the vertical floodgate sealing the mine shaft from the inside and outside to its perimeter. Furthermore, to ensure a tight seal at the bottom, a liftable flood sealing component is installed, sealing the bottom and both sides of the floodgate when used as a floodgate.

[0010] In any of the above embodiments, it is preferred that the transition rail mechanism includes a horizontally arranged flood control rail, with both ends of the flood control rail connected to the ends of the mine-internal rail and the external rail at corresponding positions, respectively. A rotating power shaft is fixedly installed on the outer side of the middle section of the flood control rail, and one end of the rotating power shaft is connected to an external high-torque rotating power component, which rotates as needed under the action of the external high-torque rotating power component. When the flood control rail is used as a rail, it is in a horizontal state. When the flood control rail is used as a flood gate, it rotates vertically and is locked under the action of the external high-torque rotating power component.

[0011] The transition plate rail mechanism has two main functions: firstly, it is used as a track in a horizontal state under normal conditions; secondly, it is used as a floodgate in a vertical state during flood control and prevention, and the work position can be changed relatively quickly and flexibly.

[0012] During the controlled rotation, the rotation can be driven by a high-torque rotary power component connected to the corresponding rotary power shaft, ultimately achieving the goal of rapid rotation and positioning.

[0013] In any of the above embodiments, it is preferred that the flood control sealing assembly includes a lower waterproof electric cylinder fixedly installed inside the lower mounting cavity, a bottom U-shaped plate frame fixedly installed on the top of the lower waterproof electric cylinder, and lower inner sealing gaskets fixedly installed on the two opposite inner side walls of the bottom U-shaped plate frame, wherein the two lower inner sealing gaskets are used to abut and seal against the lower inner and outer side walls of the flood control plate rail during operation.

[0014] The lower waterproof electric cylinder mainly operates after the flood control rail is adjusted to a vertical position and used as a flood control gate. When the lower waterproof electric cylinder is working, it will drive the corresponding bottom U-shaped plate frame to rise and fall. At the same time, it will drive the entire bottom U-shaped plate frame and its internal lower inner sealing gasket to abut and seal against the lower inner and outer side walls of the flood control rail, thereby sealing the lower part of the flood control rail and improving its performance as a flood control gate.

[0015] In any of the above embodiments, it is preferred that a lower cavity seal is fixedly installed on the outside of the bottom U-shaped plate frame. The lower cavity seal has a U-shaped structure, and when the lower cavity seal is in the working state, its two sides are used to seal the top of the lower mounting cavity.

[0016] When the lower cavity seal is in operation, it moves in tandem with the lower waterproof electric cylinder. When the lower waterproof electric cylinder moves the corresponding lower cavity seal upward, it will cause the rubber sealing plate structure on both sides of the vertical section to directly seal the top and perimeter of the lower mounting cavity, thereby preventing external rainwater from flowing back into the lower mounting cavity and achieving a good sealing effect.

[0017] In any of the above embodiments, it is preferred that the width of the two lower inner sealing gaskets is the same as the width of the flood control rail.

[0018] Setting a lower inner sealing gasket of the same size ensures comprehensive sealing of both the inner and outer sides of the flood control rail, thus improving the lower sealing effect.

[0019] In any of the above embodiments, it is preferred that an upper sealing element is fixedly installed at the top of the upper support frame at the position corresponding to the coal mine wellhead; the upper sealing element is used to seal the upper inner and outer side walls of the flood control rail in a vertical state.

[0020] In any of the above embodiments, it is preferred that the upper sealing element includes an upper U-shaped positioning frame fixedly installed inside the upper mounting cavity of the upper support frame, an upper waterproof electric cylinder fixedly installed on the top of the upper U-shaped positioning frame, the piston rod of the upper waterproof electric cylinder extending movably into the interior of the upper U-shaped positioning frame and fixedly connected to the top of the lower inverted U-shaped frame, and an upper inner sealing gasket fixedly installed on the inner wall of each of the two vertical sections of the lower inverted U-shaped frame, the two upper inner sealing gaskets cooperating to seal the upper inner and outer side walls of the flood control rail in the vertical state.

[0021] The functions of the upper sealing component include: first, when the two upper inner sealing gaskets are in working condition, they can press against the upper sides of the flood control plate rail, thereby achieving effective sealing of the upper sides; second, after the lowered inverted U-shaped frame moves down into place, since the entire lowered inverted U-shaped frame is a rigid structure, limiting the lowered inverted U-shaped frame can achieve the purpose of vertical limiting and fixing.

[0022] In any of the above embodiments, it is preferred that the width of the two upper inner sealing gaskets is the same as the width of the flood control rail.

[0023] Setting an upper inner sealing gasket of the same size ensures comprehensive sealing of both the inner and outer sides of the flood control rail, thus improving the upper sealing effect.

[0024] In any of the above solutions, it is preferred that the flood control rail, when used as a flood control gate, has a hollow structure in its middle.

[0025] The hollow structure allows for control of overall weight while ensuring performance, and ensures smooth rotation under the action of external high-torque rotating components.

[0026] In any of the above-mentioned schemes, a water level monitoring sensor is preferably installed on the middle section side wall inside the lower installation cavity, and a variable displacement pump is fixedly installed at the bottom of the lower installation cavity below the water level monitoring sensor. The outlet end of the variable displacement pump is connected to an underground pre-buried drainage pipe. The pumped rainwater is transported to the outside along the underground pre-buried drainage pipe. Both the water level monitoring sensor and the variable displacement pump are connected to the coal mine control room on the ground. When the water level monitoring sensor detects that the water level inside the lower installation cavity reaches the warning value, it will send a signal back to the coal mine control room, and the coal mine control room will control the variable displacement pump to pump away the rainwater inside the lower installation cavity, so as to prevent the rainwater inside the lower installation cavity from flowing into the coal mine shaft.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. This floodgate structure can operate normally without affecting the overall operation of the coal mine shaft. Under normal working conditions, the entire coal mine shaft can transport coal normally. At the same time, the floodgates formed by the internal rail, external rail, and transition rail mechanisms can effectively ensure the normal operation of the transport work.

[0029] 2. The transition plate rail mechanism can be started by driving an external high-torque rotating power component through manual or remote control, and can be used as a flood control gate. It serves two purposes, acting as both a guide rail and a gate.

[0030] 3. The upper cavity sealing component and flood control sealing component designed in this invention can work together to limit and seal the entire flood control gate, thereby improving the sealing and stability effect when used as a flood control gate. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0032] Figure 1 This is a schematic diagram of the flood control rail of the present invention in its normal horizontal working state.

[0033] Figure 2 This is a schematic diagram of the structure of the present invention in its vertical state.

[0034] Figure 3 This is a schematic diagram of the structure of the flood control rail of the present invention after it has been adjusted into position as a flood control gate.

[0035] In the diagram, 1. Coal mine shaft; 2. Upper support frame; 3. Side wall; 4. Internal mine rail; 5. External rail; 6. Lower mounting cavity; 7. Flood control rail; 8. Rotary power shaft; 9. Lower waterproof electric cylinder; 10. Bottom U-shaped frame; 11. Lower inner sealing gasket; 12. Upper mounting cavity; 13. Upper U-shaped positioning frame; 14. Upper waterproof electric cylinder; 15. Downward inverted U-shaped frame; 16. Upper inner sealing gasket; 17. Water level monitoring sensor; 18. Variable displacement water pump; 19. Underground pre-buried drainage pipe; 20. Lower cavity seal. Detailed Implementation

[0036] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore merely examples and should not be used to limit the scope of protection of the present invention. The specific structure of the present invention is as follows: Figures 1-3 As shown in the image.

[0037] Example 1: A flood control gate for a coal mine shaft includes an upper support frame 2 fixedly installed at the coal mine shaft 1. Side walls 3 are fixedly built on both sides of the upper support frame 2 at the coal mine shaft 1. On the ground between the two side walls 3, an inner mine rail 4 and an outer rail 5 are connected sequentially from the inside to the outside of the coal mine. A transition rail mechanism is installed between the inner mine rail 4 and the outer rail 5. The transition rail mechanism is used as a transition track connecting the inner mine rail 4 and the outer rail 5 during operation, and is used as a flood control gate in rainy weather. A lower mounting cavity 6 is provided on the ground below the outer end of the transition rail mechanism. A flood control sealing component is installed inside the lower mounting cavity 6. The flood control sealing component is used to seal the bottom of the transition rail mechanism when it is in a flood control state. The design of the floodgate structure at the coal mine shaft 1 does not affect the normal use of the entire coal mine shaft 1. Under normal working conditions, the entire coal mine shaft 1 can achieve normal coal transportation. At the same time, relying on the internal plate rail 4, external plate rail 5, and the floodgate plate rail 7 of the transition plate rail mechanism, a smooth track is formed, which can effectively ensure the normal operation of the transportation work. When there is rain and the rainfall is heavy, in order to ensure the sealing of the coal mine shaft 1 and prevent rainwater from flowing back into the mine, the transition plate rail mechanism set here can be manually or remotely controlled to drive the external high-torque rotating power component to start, thereby driving the corresponding rotating power shaft 8 and the floodgate plate rail 7 fixed to it to rotate and adjust from a horizontal state to a vertical state. At this time, it can act as a floodgate. The inside, outside and all sides of the floodgate plate rail 7 in the vertical state are used to seal the coal mine shaft 1. At the same time, in order to ensure the bottom sealing effect, a liftable flood sealing component is set here, which can seal the bottom inside and outside sides of the floodgate plate rail 7 when it is used as a floodgate.

[0038] In any of the above embodiments, it is preferred that the transition rail mechanism includes a horizontally arranged flood control rail 7. Both ends of the flood control rail 7 are respectively connected to the ends of the mine-internal rail 4 and the external rail 5 at corresponding positions. A rotating power shaft 8 is fixedly installed on the outer side of the middle section of the flood control rail 7. One end of the rotating power shaft 8 is connected to an external high-torque rotating power component and rotates as needed under the action of the external high-torque rotating power component. When the flood control rail 7 is used as a rail, it is in a horizontal state. When the flood control rail 7 is used as a floodgate, it rotates vertically and locks under the action of the external high-torque rotating power component. The transition rail mechanism has two main functions: firstly, it functions as a track in a horizontal state under normal conditions; secondly, it functions as a floodgate in a vertical state during flood control and flood prevention, allowing for relatively quick and flexible position switching. During controlled rotation, the rotation can be driven by the high-torque rotating power component connected to the corresponding rotating power shaft 8, ultimately achieving the purpose of rapid rotation and controlled positioning.

[0039] In any of the above embodiments, preferably, the flood control sealing assembly includes a lower waterproof electric cylinder 9 fixedly installed inside the lower mounting cavity 6. A bottom U-shaped plate frame 10 is fixedly installed on the top of the lower waterproof electric cylinder 9. Lower inner sealing gaskets 11 are fixedly installed on the two opposite inner side walls of the bottom U-shaped plate frame 10. When working, the two lower inner sealing gaskets 11 are used to abut and seal against the lower inner and outer side walls of the flood control rail 7. The lower waterproof electric cylinder 9 mainly operates after the flood control rail 7 is adjusted to a vertical state and used as a flood control gate. When the lower waterproof electric cylinder 9 operates, it drives the corresponding bottom U-shaped plate frame 10 to rise and fall, and at the same time, it drives the entire bottom U-shaped plate frame 10 and its internal lower inner sealing gaskets 11 to abut and seal against the lower inner and outer side walls of the flood control rail 7 in sequence, thereby achieving the purpose of sealing the lower part of the flood control rail 7 and improving its performance as a flood control gate.

[0040] In any of the above embodiments, it is preferred that an upper sealing element is fixedly installed on the top of the upper support frame 2 at the position corresponding to the coal mine wellhead 1; the upper sealing element is used to seal the upper inner and outer side walls of the flood control rail 7 in a vertical state.

[0041] In any of the above embodiments, it is preferred that the upper sealing element includes an upper U-shaped positioning frame 13 fixedly installed inside the upper mounting cavity 12 of the upper support frame 2, an upper waterproof electric cylinder 14 fixedly installed on the top of the upper U-shaped positioning frame 13, the piston rod of the upper waterproof electric cylinder 14 extending movably into the upper U-shaped positioning frame 13 and fixedly connected to the top of the lower inverted U-shaped frame 15, and an upper inner sealing gasket 16 fixedly installed on the inner wall of the two vertical sections of the lower inverted U-shaped frame 15 respectively, the two upper inner sealing gaskets 16 cooperating to seal the upper inner and outer side walls of the flood control rail 7 in the vertical state. The functions of the upper sealing element include: first, when the two upper inner sealing gaskets 16 are in working condition, they can press against the upper sides of the flood control rail 7, thereby achieving effective sealing of the upper sides; second, after the lowered inverted U-shaped frame 15 moves down to its position, since the entire lowered inverted U-shaped frame 15 is a rigid structure, limiting the lowered inverted U-shaped frame 15 can achieve the purpose of vertical limiting and fixing.

[0042] Example 2: A flood control gate for a coal mine shaft, comprising an upper support frame 2 fixedly installed at the coal mine shaft 1. Side walls 3 are fixedly constructed on both sides of the upper support frame 2 at the coal mine shaft 1. On the ground between the two side walls 3, an internal mine rail 4 and an external mine rail 5 are sequentially connected from the inside to the outside of the coal mine. A transition rail mechanism is installed between the internal mine rail 4 and the external mine rail 5. The transition rail mechanism serves as a transition track connecting the internal mine rail 4 and the external mine rail 5 during operation, and as a flood control gate in rainy weather. A lower mounting cavity 6 is provided on the ground below the outer end of the transition rail mechanism. A flood control sealing component is installed inside the lower mounting cavity 6. The flood control sealing component is used to seal the bottom of the transition rail mechanism when it is in a flood control state.

[0043] In any of the above embodiments, it is preferred that the transition rail mechanism includes a horizontally arranged flood control rail 7, with both ends of the flood control rail 7 respectively connected to the ends of the mine inner rail 4 and the outer rail 5 at corresponding positions. A rotating power shaft 8 is fixedly installed on the outer side of the middle section of the flood control rail 7, and one end of the rotating power shaft 8 is connected to an external high-torque rotating power component and rotates as needed under the action of the external high-torque rotating power component. When the flood control rail 7 is used as a rail, it is in a horizontal state. When the flood control rail 7 is used as a flood gate, it is in a vertical state and locked when rotating under the action of the external high-torque rotating power component.

[0044] The transition plate rail mechanism has two main functions: firstly, it is used as a track in a horizontal state under normal conditions; secondly, it is used as a floodgate in a vertical state during flood control and prevention, and the work position can be changed relatively quickly and flexibly.

[0045] During the controlled rotation, the rotation can be driven by a high-torque rotating power component connected to the corresponding rotating power shaft 8, ultimately achieving the purpose of rapid rotation and controlled positioning.

[0046] In any of the above embodiments, it is preferred that the flood control sealing assembly includes a lower waterproof electric cylinder 9 fixedly installed inside the lower mounting cavity 6, a bottom U-shaped plate frame 10 fixedly installed on the top of the lower waterproof electric cylinder 9, and lower inner sealing gaskets 11 fixedly installed on the two opposite inner side walls of the bottom U-shaped plate frame 10 respectively. When working, the two lower inner sealing gaskets 11 are used to abut and seal against the lower inner and outer side walls of the flood control rail 7.

[0047] The lower waterproof electric cylinder 9 mainly operates after the flood control rail 7 is adjusted to a vertical position and used as a flood control gate. When the lower waterproof electric cylinder 9 is working, it will drive the corresponding bottom U-shaped plate frame 10 to rise and fall. At the same time, it will drive the entire bottom U-shaped plate frame 10 and its internal lower inner sealing gasket 11 to abut and seal against the lower inner and outer side walls of the flood control rail 7 in sequence, thereby sealing the lower part of the flood control rail 7 and improving its performance as a flood control gate.

[0048] In any of the above embodiments, it is preferred that a lower cavity seal 20 is fixedly installed on the outside of the bottom U-shaped plate frame 10. The lower cavity seal 20 has a U-shaped structure, and when the lower cavity seal 20 is in the working state, its two sides are used to seal the top of the lower mounting cavity 6.

[0049] When the lower cavity seal is in operation, it moves in conjunction with the lower waterproof electric cylinder 9. When the lower waterproof electric cylinder 9 drives the corresponding lower cavity seal to rise, it will drive the rubber sealing plate structure on both sides of the vertical section to directly seal the top and perimeter of the lower mounting cavity 6, thereby preventing external rainwater from flowing back into the lower mounting cavity 6 and achieving a good sealing effect.

[0050] In any of the above embodiments, it is preferred that the width of the two lower inner sealing gaskets 11 is the same as the width of the flood control rail 7.

[0051] Setting a lower inner sealing gasket 11 of the same size can ensure its completeness when sealing the inner and outer sides of the flood control rail 7, thereby improving the lower sealing effect.

[0052] The functions of the flood control sealing assembly include: first, when the two lower inner sealing gaskets 11 are in working condition, they can press against the lower sides of the flood control rail 7, thereby achieving effective sealing of the lower sides; second, when the bottom U-shaped frame 10 moves up to the position, since the entire bottom U-shaped frame 10 is a rigid structure, limiting the bottom U-shaped frame 10 can achieve the purpose of vertical limiting and fixing.

[0053] In any of the above embodiments, it is preferred that an upper sealing element is fixedly installed on the top of the upper support frame 2 at the position corresponding to the coal mine wellhead 1; the upper sealing element is used to seal the upper inner and outer side walls of the flood control rail 7 in a vertical state.

[0054] In any of the above embodiments, it is preferred that the upper sealing element includes an upper U-shaped positioning frame 13 fixedly installed inside the upper mounting cavity 12 of the upper support frame 2, an upper waterproof electric cylinder 14 fixedly installed on the top of the upper U-shaped positioning frame 13, the piston rod of the upper waterproof electric cylinder 14 extending movably into the upper U-shaped positioning frame 13 and fixedly connected to the top of the lower inverted U-shaped frame 15, and an upper inner sealing gasket 16 fixedly installed on the inner wall of the two vertical sections of the lower inverted U-shaped frame 15 respectively, the two upper inner sealing gaskets 16 cooperating to seal the upper inner and outer side walls of the flood control rail 7 in the vertical state.

[0055] The functions of the upper sealing component include: first, when the two upper inner sealing gaskets 16 are in working condition, they can press against the upper sides of the flood control rail 7, thereby achieving effective sealing of the upper sides; second, after the lowered inverted U-shaped frame 15 moves down into place, since the entire lowered inverted U-shaped frame 15 is a rigid structure, limiting the lowered inverted U-shaped frame 15 can achieve the purpose of vertical limitation and fixation; third, the flood control sealing component, together with the upper sealing component, achieves simultaneous limitation of the upper and lower parts, ensuring its stability when facing large rainwater impacts.

[0056] In any of the above embodiments, it is preferred that the width of the two upper inner sealing gaskets 16 is the same as the width of the flood control rail 7.

[0057] Setting an upper inner sealing gasket 16 of the same size ensures its completeness in sealing the inner and outer sides of the flood control rail 7, thereby improving the upper sealing effect.

[0058] In any of the above solutions, it is preferred that the flood control rail 7, when used as a flood control gate, has a hollow structure in its middle.

[0059] The hollow structure allows for control of overall weight while ensuring performance, and ensures smooth rotation under the action of external high-torque rotating components.

[0060] In any of the above-mentioned schemes, a water level monitoring sensor 17 is installed on the middle section side wall inside the lower installation cavity 6. A variable displacement pump 18 is fixedly installed at the bottom of the lower installation cavity 6 below the water level monitoring sensor 17. The outlet end of the variable displacement pump 18 is connected to an underground pre-buried drainage pipe 19. The pumped rainwater is transported to the outside along the underground pre-buried drainage pipe 19. The water level monitoring sensor 17 and the variable displacement pump 18 are both connected to the coal mine control room on the ground. When the water level monitoring sensor 17 detects that the water level inside the lower installation cavity 6 reaches the warning value, it will send a signal back to the coal mine control room, and the coal mine control room will control the variable displacement pump 18 to pump away the rainwater inside the lower installation cavity 6, so as to prevent the rainwater inside the lower installation cavity 6 from flowing into the coal mine shaft 1.

[0061] Specific working principle:

[0062] The design of the flood control gate structure at the coal mine shaft 1 does not affect the normal use of the entire coal mine shaft 1. Under normal working conditions, the entire coal mine shaft 1 can achieve normal coal transportation. At the same time, relying on the internal plate rail 4, external plate rail 5, and the flood control plate rail 7 of the transition plate rail mechanism, a smooth track is formed, which can effectively ensure the normal operation of the transportation work.

[0063] When it rains and the rainfall is heavy, in order to ensure the sealing of the coal mine entrance 1 and prevent rainwater from flowing back into the mine, the transition plate rail mechanism installed here can be manually or remotely controlled to drive the external high-torque rotating power component to start, thereby driving the corresponding rotating power shaft 8 and the flood control plate rail 7 fixed to it to rotate and adjust from a horizontal state to a vertical state. At this time, it can act as a flood control gate. The inside, outside and all around of the flood control plate rail 7 in the vertical state are used to seal the coal mine entrance 1.

[0064] Meanwhile, to ensure a proper bottom seal, a liftable flood control sealing assembly is installed to seal the inner and outer sides of the bottom of the flood control rail 7 when it is used as a floodgate. The upper seal is used to seal the upper inner and outer sidewalls of the flood control rail 7 when it is in a vertical position.

[0065] In summary, this floodgate structure can operate normally without affecting the overall use of the coal mine shaft 1. Under normal operating conditions, the entire coal mine shaft 1 can transport coal normally. Simultaneously, the smooth track formed by the internal rail 4, external rail 5, and the floodgate rail 7 of the transition rail mechanism effectively ensures the normal operation of the transport process. The transition rail mechanism can be manually or remotely controlled to drive an external high-torque rotating power component for use as a floodgate, serving a dual purpose as both a guide rail and a gate. The upper cavity sealing component and floodgate sealing assembly designed in this invention work together to limit and seal the entire floodgate, improving its sealing and stability when used as a floodgate.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any alternative improvements or transformations made to the implementation of the present invention fall within the protection scope of the present invention.

[0067] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A flood control gate for coal mine shafts, characterized in that: The system includes an upper support frame fixedly installed at the coal mine entrance. Side walls are fixedly constructed on both sides of the coal mine entrance within the upper support frame. An internal mine rail and an external mine rail are sequentially connected from the inside to the outside of the coal mine on the ground between the two side walls. A transition rail mechanism is installed between the internal and external mine rails. This transition rail mechanism serves as a transition track connecting the internal and external mine rails during operation and as a floodgate in rainy weather. A lower mounting cavity is provided on the ground below the outer end of the transition rail mechanism. A flood-proof sealing component is installed inside the lower mounting cavity to seal the bottom of the transition rail mechanism when it is in a flood-proof state. The transition rail mechanism includes a horizontally arranged flood control rail. The two ends of the flood control rail are respectively connected to the ends of the mine rail and the external rail at corresponding positions. A rotating power shaft is fixedly installed on the outer side of the middle section of the flood control rail. One end of the rotating power shaft is connected to an external high-torque rotating power component and rotates as needed under the action of the external high-torque rotating power component. When the flood control rail is used as a rail, it is in a horizontal state. When the flood control rail is used as a flood gate, it is in a vertical state and locked when rotating under the action of the external high-torque rotating power component. The flood control sealing assembly includes a lower waterproof electric cylinder fixedly installed inside the lower mounting cavity. A bottom U-shaped plate frame is fixedly installed on the top of the lower waterproof electric cylinder. Lower inner sealing gaskets are fixedly installed on the two opposite inner side walls of the bottom U-shaped plate frame. When working, the two lower inner sealing gaskets are used to abut and seal against the lower inner and outer side walls of the flood control plate rail. A water level monitoring sensor is installed on the middle side wall inside the lower installation cavity. A variable displacement pump is fixedly installed at the bottom of the lower installation cavity below the water level monitoring sensor. The outlet end of the variable displacement pump is connected to an underground pre-buried drainage pipe. The pumped rainwater is transported to the outside along the underground pre-buried drainage pipe. Both the water level monitoring sensor and the variable displacement pump are connected to the coal mine control room on the ground. When the water level monitoring sensor detects that the water level inside the lower installation cavity reaches the warning value, it will send a signal back to the coal mine control room, and the coal mine control room will control the variable displacement pump to pump away the rainwater inside the lower installation cavity to prevent the rainwater inside the lower installation cavity from flowing into the coal mine shaft.

2. A flood control gate for coal mine shafts according to claim 1, characterized in that: The width of the two lower inner sealing gaskets is the same as the width of the flood control rail.

3. A flood control gate for coal mine shafts according to claim 2, characterized in that: An upper sealing element is fixedly installed at the top of the upper support frame at the position corresponding to the coal mine wellhead; the upper sealing element is used to seal the upper inner and outer side walls of the flood control rail when it is in a vertical state.

4. A flood control gate for coal mine shafts according to claim 3, characterized in that: The upper sealing element includes an upper U-shaped positioning frame fixedly installed inside the upper mounting cavity of the upper support frame. An upper waterproof electric cylinder is fixedly installed on the top of the upper U-shaped positioning frame. The piston rod of the upper waterproof electric cylinder extends movably into the upper U-shaped positioning frame and is fixedly connected to the top of the lower inverted U-shaped frame. An upper inner sealing gasket is fixedly installed on the inner wall of each of the two vertical sections of the lower inverted U-shaped frame. The two upper inner sealing gaskets cooperate to seal the upper inner and outer side walls of the flood control rail in the vertical state.

5. A flood control gate for coal mine shafts according to claim 4, characterized in that: The width of the two upper inner sealing gaskets is the same as the width of the flood control rail.

6. A flood control gate for coal mine shafts according to claim 5, characterized in that: When the flood control slab rail is used as a flood control gate, its middle part adopts a hollow structure.

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