CN217327398U

CN217327398U - Intelligent protective door device for wellhead of coal mine air return shaft

Info

Publication number: CN217327398U
Application number: CN202221256197.1U
Authority: CN
Inventors: 李明
Original assignee: Beijing Guanming Machinery Technology Co ltd
Current assignee: Beijing Guanming Machinery Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-08-30
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to an intelligent protective door device for a coal mine air return shaft mouth, the coal mine air return shaft mouth comprises a common well mouth and a standby well mouth, intelligent protective doors are arranged on the common well mouth and the standby well mouth, a middle support is arranged between the common well mouth and the standby well mouth, and a PLC controller is respectively connected with an air quantity sensor, a motor, a speed reducer and a limit switch through power lines and signal lines; the whole tarpaulin covers the top and two sides of the fixed frame, the walking frame and the traction frame and is fixed. The utility model can be automatically opened when exhausting air; the automatic closing when stopping to exhaust effectively prevents rain and snow, foreign matter from falling into the well to protection exhaust fan and fan normal operating, all played necessary guarantor's driving and navigation effect to safety in production in the pit, reduction post workman work risk.

Description

Intelligent protective door device for wellhead of coal mine air return shaft

Technical Field

The utility model relates to an intelligence protective door device, concretely relates to intelligence protective door device for colliery return air shaft well head.

Background

The coal mine return air shaft is used as a part of a coal mine production system and plays an important role in coal mine safety production. When underground coal mining works, flammable, explosive, poisonous and harmful gases such as gas and the like can simultaneously overflow, and the gases are discharged from the return air shaft. Usually, the return air shaft is provided with two well heads, one is used and the other is prepared, and the fan can be simultaneously opened or closed according to the underground ventilation requirement. The well mouth of the return air well is vertically upward, an exhaust fan is arranged in the return air well, the well mouth is in an open state, the distance between the top end of the well mouth and the ground is higher, and post workers need to check the state of the well mouth daily. In the production process, rain and snow fall into the well mouth in rainy and snowy weather; in extreme weather such as strong wind, high-altitude foreign matters fall into a well, which brings unstable factors to the normal work of an exhaust fan and a fan, and the exhaust fan is occasionally short-circuited and shut down due to moisture; foreign matter falls into the well to block the fan and the like. The factors can cause that flammable, explosive, poisonous and harmful gases such as underground gas and the like can not be discharged in time, thereby bringing great hidden danger to underground safe production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an intelligence protective door device for colliery return air shaft well head can be opened when needing to air exhaust automatically, self-closing when needing to stop airing exhaust effectively prevents sleet, foreign matter and falls into in the well to protection exhaust fan and fan normal operating have all played necessary driving protection navigation effect to safety in the pit production, reduction post workman work risk.

In order to achieve the above purpose, the utility model discloses there is following technical scheme:

the utility model discloses an intelligent protective door device for a coal mine air return shaft well mouth, the coal mine air return shaft well mouth comprises a common well mouth and a standby well mouth, intelligent protective doors are arranged on the common well mouth and the standby well mouth, a middle support is arranged between the common well mouth and the standby well mouth, the middle support is used for isolating the intelligent protective doors on the common well mouth and the standby well mouth, the intelligent protective doors comprise a driving workbench, a motor and a speed reducer, a PLC controller, an air return shaft platform, an air quantity sensor, a transmission chain, a driving chain wheel and a shaft system, a driven chain wheel and a shaft system, a walking chain, a tail support, a fixed frame, a trapezoidal guide rail, a walking frame, a traction steel wire rope, an upper walking pulley, a lower walking pulley, a limit switch, a middle support, a guide chain wheel and tarpaulin, the driving workbench, the tail support and the middle support are arranged on the air return shaft platform through anchor bolts, one end of the trapezoidal guide rail is welded on the side surface of the tail bracket, and the other end of the trapezoidal guide rail is welded on the side surface of the middle bracket; the motor and the speed reducer are arranged on the driving workbench; the driving chain wheel and the shaft system are arranged in the middle of the driving workbench through a bearing seat; the driven chain wheel and the shaft system are arranged in the middle of the middle bracket by a bearing seat; the walking chain is connected with the driving chain wheel and the shaft system and the driven chain wheel and the shaft system through the guide chain wheel; two ends of the walking chain are fixed on the traction frame; the motor and the speed reducer are connected with the driving chain wheel and the shaft system through a transmission chain; the PLC controller is arranged on the driving workbench; the fixed frame is welded beside the tail bracket; the traction frame, the walking frame and the fixed frame are all provided with a guide chain wheel, an upper walking pulley and a lower walking pulley; the traction frame, the walking frame and the fixed frame are respectively clamped on the trapezoidal guide rail through the upper walking pulley and the lower walking pulley; a limit switch contact point is welded on the traction frame; the fixed frame is connected with the walking frame through a traction steel wire rope; the walking frame is connected with the walking frame through a traction steel wire rope; the traction frame is connected with the walking frame through a traction steel wire rope; the limit switch 1 is arranged on the air return shaft platform; the limit switch 2 is arranged on the inner side of the bottom end of the middle bracket; the air quantity sensor is arranged on the inner side of the bottom end of the middle bracket; the PLC is respectively connected with the air quantity sensor, the motor, the speed reducer and the limit switch through power lines and signal lines; the whole tarpaulin covers the top and two sides of the fixed frame, the walking frame and the traction frame and is fixed.

The driving workbench comprises a top plate for fixedly placing a motor and a speed reducer, a top plate for fixedly placing a driving sprocket and a shaft system, and a supporting rod, wherein the supporting rod is used for supporting the top plate for fixedly placing the driving sprocket and the shaft system; and reinforcing ribs are arranged between the top plate for fixedly placing the driving chain wheel and the shaft system and the top plate for fixedly placing the driving chain wheel and the shaft system.

The middle support is of a frame structure formed by welding four vertical channel steels and two top U-shaped channel steels, and the bottom of the middle support is welded with a horizontal connecting channel steel.

The utility model discloses a control method that is used for intelligent protective door device of colliery return air shaft well head has following step:

when the coal mine return air well exhausts air, the air quantity sensor detects the air quantity, an opening signal is transmitted to the PLC, the PLC opens the motor and the speed reducer to run anticlockwise, the transmission chain drives the driving chain wheel and the shaft system, the driving chain wheel and the shaft system drive the driven chain wheel and the shaft system to rotate simultaneously through the traveling chain, at the moment, the traction frame runs towards the direction of the tail support, the four traveling frames are contacted and pushed to travel simultaneously, until the contact point of the limit switch of the traction frame touches the limit switch 1, the limit switch 1 transmits a control signal to the PLC, the PLC controls the motor and the speed reducer to stop working, and at the moment, the intelligent protective door device is in an opening state;

when the air return shaft of the coal mine stops exhausting air, the air quantity sensor detects no air quantity, a closing signal is transmitted to the PLC, the PLC starts the motor and the speed reducer to run clockwise, the transmission chain drives the driving chain wheel and the shafting, the driving chain wheel and the shafting drive the driven chain wheel and the shafting to rotate simultaneously through the walking chain, the traction frame runs towards the middle support, the traction frame drives the four walking frames to run simultaneously through the traction steel wire rope when running, when the contact point of the limit switch of the traction frame touches the limit switch 2, the limit switch 2 transmits the control signal to the PLC, the PLC controls the motor and the speed reducer to stop working, and the stop state of the intelligent protective door device is determined at the moment.

Owing to adopted above technical scheme, the utility model has the advantages of:

the utility model discloses can be when needs are aired exhaust the automatic intelligent guard gate that opens the well head, the intelligent guard gate of self-closing well head when needs stop airing exhaust can prevent effectively that sleet, foreign matter from falling into the well to protection exhaust fan and fan normal operating have all played necessary protection and have driven the effect of navigating to safety in the pit production, reduction post workman work risk.

Drawings

FIG. 1 is a schematic structural view of the closed state of the present invention;

FIG. 2 is a schematic structural view of the open state of the present invention;

FIG. 3 is a schematic illustration of the left side view of FIG. 1;

FIG. 4 is an enlarged schematic view at C of FIG. 3;

fig. 5 is an enlarged schematic view of the driving table of the present invention;

FIG. 6 is an enlarged schematic view of the walking frame of the present invention;

fig. 7 is an enlarged schematic view of the traction frame of the present invention;

FIG. 8 is an enlarged schematic view at A of FIG. 6;

FIG. 9 is a schematic illustration of a side view of FIG. 8;

FIG. 10 is an enlarged schematic view at B of FIG. 7;

FIG. 11 is a schematic illustration of a side view of FIG. 10;

FIG. 12 is an enlarged schematic view of the trapezoidal guide rail of the present invention;

fig. 13 is an enlarged schematic view of the tail bracket of the present invention;

FIG. 14 is a schematic illustration of a side view of FIG. 11;

fig. 15 is an enlarged schematic view of the middle bracket of the present invention;

FIG. 16 is a schematic illustration of a side view of FIG. 14;

fig. 17 is a schematic diagram of the PLC controller of the present invention electrically connected to the air volume sensor, the motor, the speed reducer, and the limit switch, respectively.

In the figure: 1. driving the worktable; 2. a motor and a speed reducer; 3. a PLC controller; 4. a return air shaft platform; 5. an air quantity sensor; 6. a drive chain; 7. a driving sprocket and a shaft system; 8. driven chain wheel and shaft system; 9. a traveling chain; 10. a tail support; 11. a fixed mount; 12. a trapezoidal guide rail; 13. a walking frame; 14. a traction frame; 15. a traction wire rope; 16. an upper traveling pulley; 17. a lower traveling pulley; 18. a limit switch 1; 19. a middle support; 20. a guide sprocket; 21. tarpaulin; 22. a traction wire rope fixing ring; 23. a limit switch 2; 24. a limit switch contact point; 25. a return air shaft mouth; 26. a foundation bolt; 27. a walking chain fixing ring; 28. a top steel pipe; 29. vertical steel pipes; 30. a horizontal steel pipe; 31. a rectangular plate; 7-1: a driving walking sprocket; 7-2: a drive transmission sprocket; 7-3: an active shaft system;

Detailed Description

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-17, the utility model discloses an intelligent protective door device for colliery return air shaft well head, colliery return air shaft well head includes well head and reserve well head commonly used, all is equipped with intelligent guard gate on well head commonly used and reserve well head, is equipped with the middle part support between well head commonly used and reserve well head, the middle part support is used for keeping apart intelligent guard gate on well head commonly used and the intelligent guard gate on the reserve well head, intelligent guard gate includes drive table, motor and speed reducer, PLC controller, return air shaft platform, air quantity sensor, drive chain, drive sprocket and shafting, driven sprocket and shafting, walking chain, afterbody support, mount, trapezoidal guide rail, walking frame, traction wire rope, upward walking pulley, downward walking pulley, limit switch, middle part support, guide sprocket, tarpaulin, drive table, upward walking pulley, downward walking pulley, limit switch, middle part support, guide chain, tarpaulin, The tail support and the middle support are mounted on the air return shaft platform through foundation bolts, one end of the trapezoidal guide rail is welded on the side face of the tail support, and the other end of the trapezoidal guide rail is welded on the side face of the middle support; the motor and the speed reducer are arranged on the driving workbench; the driving chain wheel and the shaft system are arranged in the middle of the driving workbench through a bearing seat; the driven chain wheel and the shaft system are arranged in the middle of the middle bracket by a bearing seat; the walking chain is connected with the driving chain wheel and the shaft system and the driven chain wheel and the shaft system through the guide chain wheel; two ends of the walking chain are fixed on the traction frame; the motor and the speed reducer are connected with the driving chain wheel and the shaft system through a transmission chain; the PLC controller is arranged on the driving workbench; the fixed frame is welded beside the tail bracket; the traction frame, the walking frame and the fixed frame are all provided with a guide chain wheel, an upper walking pulley and a lower walking pulley; the traction frame, the walking frame and the fixing frame are clamped on the trapezoidal guide rail through an upper walking pulley and a lower walking pulley respectively; a limit switch contact point is welded on the traction frame; the fixed frame is connected with the walking frame through a traction steel wire rope; the walking frames are connected through a traction steel wire rope; the traction frame is connected with the walking frame through a traction steel wire rope; the limit switch 1 is arranged on the return air shaft platform; the limit switch 2 is arranged on the inner side of the bottom end of the middle bracket; the air quantity sensor is arranged on the inner side of the bottom end of the middle bracket; the PLC is respectively connected with the air quantity sensor, the motor, the speed reducer and the limit switch through power lines and signal lines; the tarpaulin wraps the fixed frame, the walking frame, the top of the traction frame and two sides of the traction frame.

Two ends of the walking chain are fixed on a traction frame, and the traction frame is a leading mechanism for the whole device to act; the walking chain is not fixedly connected with the walking frame, but the walking chain is lapped on a guide chain wheel on a rectangular plate of the walking frame; the opening action of the walking frame is realized by the pushing force of the traction frame, and the closing action of the walking frame is realized by the pulling force of a traction steel wire rope between the traction frame and the walking frame. The walking chain is not fixedly connected with the fixed frame, but the walking chain is also lapped on a guide chain wheel on a rectangular plate of the fixed frame;

the tail support is made by welding two vertical channel steels and a top U-shaped channel steel.

The fixed frame, the walking frame and the traction frame respectively comprise a top steel pipe, a horizontal steel pipe, a vertical steel pipe and a rectangular plate, wherein the vertical steel pipe is welded below the top steel pipe; the fixed frame and the walking frame are provided with an upper walking pulley, a lower walking pulley, a guide chain wheel and a traction steel wire rope fixing ring; the traction frame is provided with a limit switch contact point, an upper traveling pulley, a lower traveling pulley, a traction steel wire rope fixing ring and a traveling chain fixing ring.

The driving workbench comprises a top plate for fixedly placing the motor and the speed reducer, a top plate for fixedly placing the driving sprocket and the shaft system and a supporting rod, wherein the supporting rod is used for supporting the top plate for fixedly placing the driving sprocket and the shaft system; and reinforcing ribs are arranged between the top plate for fixedly placing the driving chain wheel and the shaft system and the top plate for fixedly placing the driving chain wheel and the shaft system.

The middle support is of a frame structure formed by welding four vertical channel steels and two top U-shaped channel steels, wherein the bottom of the middle support is welded with a horizontal connecting channel steel.

Motor and speed reducer: the manufacturer: "Wolong electric Nanyang explosion-proof group Ltd"; the model is as follows: YB 2-112M-4; but is not limited to, the product;

a PLC controller: the manufacturer: siemens, type number: s7-400; but is not limited to, the product;

an air quantity sensor: the manufacturer: yixing city three constant automated instrument limited company, model: KGF 2; but is not limited to, the product; but is not limited to, the product;

a limit switch: the manufacturer: deli west, model: LXJM 1-8111; but is not limited to this product.

Sprocket and shafting: the model is as follows: the GMLZ manufacturer is: beijing Guanming mechanical science and technology, Inc.; but is not limited to this product.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. The utility model provides an intelligent protective door device for colliery return air shaft well head, colliery return air shaft well head includes well head and reserve well head commonly used, all is equipped with intelligent guard gate on well head and reserve well head commonly used, is equipped with the middle part support between well head commonly used and reserve well head, the middle part support is used for keeping apart intelligent guard gate on the well head commonly used and the intelligent guard gate on the reserve well head, its characterized in that: the intelligent protective door comprises a driving workbench, a motor, a speed reducer, a PLC (programmable logic controller), a return air shaft platform, an air quantity sensor, a transmission chain, a driving chain wheel and shaft system, a driven chain wheel and shaft system, a walking chain, a tail support, a fixing frame, a trapezoidal guide rail, a walking frame, a traction steel wire rope, an upper walking pulley, a lower walking pulley, a limit switch, a middle support, a guide chain wheel and tarpaulin, wherein the driving workbench, the tail support and the middle support are arranged on the return air shaft platform through foundation bolts, one end of the trapezoidal guide rail is welded on the side face of the tail support, and the other end of the trapezoidal guide rail is welded on the side face of the middle support; the motor and the speed reducer are arranged on the driving workbench; the driving chain wheel and the shaft system are arranged in the middle of the driving workbench through a bearing seat; the driven chain wheel and the shaft system are arranged in the middle of the middle bracket by a bearing seat; the walking chain is connected with the driving chain wheel and the shaft system and the driven chain wheel and the shaft system through the guide chain wheel; two ends of the walking chain are fixed on the traction frame; the motor and the speed reducer are connected with the driving chain wheel and the shaft system through a transmission chain; the PLC controller is arranged on the driving workbench; the fixed frame is welded beside the tail bracket; the traction frame, the walking frame and the fixed frame are all provided with a guide chain wheel, an upper walking pulley and a lower walking pulley; the traction frame, the walking frame and the fixed frame are respectively clamped on the trapezoidal guide rail through the upper walking pulley and the lower walking pulley; a limit switch contact point is welded on the traction frame; the fixed frame is connected with the walking frame through a traction steel wire rope; the walking frame is connected with the walking frame through a traction steel wire rope; the traction frame is connected with the walking frame through a traction steel wire rope; the limit switch 1 is arranged on the air return shaft platform; the limit switch 2 is arranged on the inner side of the bottom end of the middle bracket; the air quantity sensor is arranged on the inner side of the bottom end of the middle bracket; the PLC is respectively connected with the air quantity sensor, the motor, the speed reducer and the limit switch through power lines and signal lines; the whole tarpaulin covers the top and two sides of the fixed frame, the walking frame and the traction frame and is fixed.

2. The intelligent protective door device for the wellhead of the coal mine air return shaft as claimed in claim 1, wherein: the driving workbench comprises a top plate for fixedly placing the motor and the speed reducer, a top plate for fixedly placing the driving sprocket and the shaft system and a supporting rod, wherein the supporting rod is used for supporting the top plate for fixedly placing the driving sprocket and the shaft system; and reinforcing ribs are arranged between the top plate for fixedly placing the driving chain wheel and the shaft system and the top plate for fixedly placing the driving chain wheel and the shaft system.

3. The intelligent protective door device for the wellhead of the coal mine air return shaft as claimed in claim 1, wherein: the middle support is of a frame structure formed by welding four vertical channel steels and two top U-shaped channel steels, wherein the bottom of the middle support is welded with a horizontal connecting channel steel.