Self-closing locking device of single air door for coal mine

Abstract

The utility model provides a self-closing locking device of a single air door for a coal mine, which relates to the technical field of a coal mine ventilation system and comprises a door plate, a mechanical locking device and a balancing weight, the door plate is arranged on roadway walls, the mechanical locking device is hung at a position between the roadway walls on two sides, a guide wheel is rotatably arranged above the front side of each roadway wall, and the balancing weight is arranged on the front side of the roadway wall. A first steel wire rope is connected to the upper portion of the front side of the door plate, and a movable pulley is rotationally installed at the top of the balancing weight through a support. According to the utility model, the pulley blocks are additionally arranged at the two door plates, the first steel wire rope is wound around the first pulley block and is connected with the balancing weight, and the other end of the balancing weight is wound around the second pulley block through the second steel wire rope and is connected to the mechanical locking device; therefore, the linkage locking function of the two single air doors is achieved, and the problem that the two air doors can be opened by 50% at the same time is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine ventilation system technical field especially, relates to a self closing lock device of single leaf air door for coal mine. BACKGROUND

[0002] According to the actual need of coal mine ventilation system adjustment, the ventilation pedestrian lane between the main air inlet lane needs to be equipped with the regulating air door to control the air volume, the ventilation facility needs to have the air regulating and pedestrian functions, but does not need to be equipped with the reverse air door, that is, the single leaf regulating air door (single leaf air door), uses the traditional pneumatic device (cylinder) to control the switch, realizes the locking function simultaneously, finds out that this kind of mode has the following disadvantages in the long-term use: the human flow is big in the ventilation pedestrian lane, the cylinder is frequently switched, long-time high-frequency operation is easy to cause the pneumatic device damage, the cylinder opening and closing speed is slow, the traffic efficiency of staff is influenced during the shift change pedestrian peak period;

[0003] In order to solve the above problems, in the prior art, manual opening and closing mode is also used, and two single leaf air doors are linked and locked by using a steel wire rope, but the following problems still exist: two single leaf air doors are locked by using a steel wire rope, which is laid and connected on the front and rear two single leaf air doors through a fixed path, and the redundant length needs to reach the stroke of opening one air door, so that the two single leaf air doors can be opened by 50% of the stroke at the same time, the locking function is not strict, and there is a risk of ventilation system disorder; during the process of passing through the two single leaf air doors, the staff may not close the door after passing through, which causes the other air door to be locked and the staff behind to be unable to pass through, therefore, the utility model provides a self closing lock device of single leaf air door for coal mine to solve the problems in the prior art. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a self closing lock device of single leaf air door for coal mine, which realizes the linkage locking function of two single leaf air doors, eliminates the problem that the two air doors can be opened by 50% at the same time, and uses the gravity of the counterweight to pull the first steel wire rope to drive the door plate to reset, thereby realizing the self closing function of the two single leaf air doors.

[0005] The utility model discloses a coal mine is with single -leaf air door's self -closing lock device, including door panel, mechanical locking device and counterweight, the door panel is established at the lane wall, the mechanical locking device is hung in the position between the lane wall of both sides, the upper side of the front side of lane wall is equipped with the guide wheel, the first steel wire rope is connected with the upper side of the front side of door panel, the top of counterweight is rotatably installed with the dynamic pulley through the support, the first pulley group and second pulley group are equipped on the lane wall of the one end position of door panel, the first steel wire rope passes the guide wheel, first pulley group, dynamic pulley and is connected to the support on the top of counterweight,

[0006] The bottom of the counterweight is connected with the second steel wire rope, the second steel wire rope passes the second pulley group and passes through the lane wall, the second steel wire rope of the mechanical locking device is connected to the lane wall of both sides, and the mechanical locking device is used for locking the second steel wire rope of the other side when the second steel wire rope of one side is pulled.

[0007] Further improvement lies in that: the upper side of the front side of the lane wall is equipped with a support arm, and the guide wheel is rotatably arranged below the support arm.

[0008] Further improvement lies in that: the first pulley group includes a first fixed pulley and a second fixed pulley, and after the first steel wire rope passes the guide wheel, the first steel wire rope passes the first fixed pulley, the dynamic pulley, and the second fixed pulley in sequence to the support on the top of the counterweight.

[0009] Further improvement lies in that: the second pulley group includes a third fixed pulley and a steering wheel, the third fixed pulley is provided with two groups, and the second steel wire rope passes the third fixed pulley and the steering wheel in sequence to the mechanical locking device.

[0010] Further improvement lies in that: the both sides of the mechanical locking device are rotatably provided with winding rollers, and the second steel wire ropes on the both sides are wound on the winding rollers, and the winding rollers are provided with encoders.

[0011] Further improvement lies in that: the edge of the end of the winding roller is provided with a clamping groove, and the inside of the mechanical locking device at the position of one side of the winding roller is rotatably provided with a limiting tooth matched with the clamping groove, and the limiting tooth is rotatably driven by a motor.

[0012] Further improvement lies in that: a single-chip microcomputer is arranged at the middle position of the top of the inside of the mechanical locking device, a signal output end of the encoder is connected to the single-chip microcomputer, and a control end of the single-chip microcomputer is connected to the motor.

[0013] The utility model discloses a coal mine is with single -leaf air door's self -closing lock device, including door panel, mechanical locking device and counterweight, the door panel is established at the lane wall, the mechanical locking device is hung in the position between the lane wall of both sides, the upper side of the front side of lane wall is equipped with the guide wheel, the first steel wire rope is connected with the upper side of the front side of door panel, the top of counterweight is rotatably installed with the dynamic pulley through the support, the first pulley group and second pulley group are equipped on the lane wall of the one end position of door panel, the first steel wire rope passes the guide wheel, first pulley group, dynamic pulley and is connected to the support on the top of counterweight,

[0014] 1. The utility model discloses a pulley block is installed at two door panels, and uses first steel wire to go around first pulley block and is connected to counterweight, and the other end of counterweight uses second steel wire to go around second pulley block and is connected to mechanical locking device, when one door panel opens, mechanical locking device locks the second steel wire of another door panel, ensures that another door panel can not open, thereby realize the linkage locking function of two single -leaf air door, eliminate the problem that two air doors can open 50% simultaneously, utilize the gravity of counterweight simultaneously, and first steel wire is driven to door panel reset, realize the self -closing function of two single -leaf air door.

[0015] 2. The utility model discloses a pulley block, can eliminate the problem that mechanical locking device and door panel stroke do not match, improve the operability of mechanical locking device, expand the use range and application scene. DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the structure schematic diagram on the lane wall of the utility model;

[0018] Figure 3 It is the schematic diagram of mechanical locking device of the utility model.

[0019] Among them: 1, door panel;2, mechanical locking device;3, counterweight;4, guide wheel;5, first steel wire;6, movable pulley;7, second steel wire;8, support arm;9, first fixed pulley;10, second fixed pulley;11, third fixed pulley;12, steering wheel;13, lane wall;14, around the roller;15, clamping groove;16, limit tooth;17, single-chip microcontroller. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the utility model, the utility model will be further detailed below combining with examples, and this embodiment is only used for explaining the utility model, and does not constitute the limitation to the protection scope of the utility model.

[0021] Example one

[0022] According to Figure 1 、 2The embodiment proposes a self-closing lock device for single-fan air door of coal mine, which comprises a door plate 1, a mechanical locking device 2 and a counterweight 3. The door plate 1 is arranged on a roadway wall 13. The mechanical locking device 2 is hung between the two sides of the roadway wall 13. A guide wheel 4 is rotatably arranged above the front side of the roadway wall 13. A first steel wire rope 5 is connected to the top of the front side of the door plate 1. A dynamic pulley 6 is rotatably arranged on the top of the counterweight 3 through a support. A first pulley set and a second pulley set are arranged on the roadway wall 13 at the position of one end of the door plate 1. The first steel wire rope 5 passes through the guide wheel 4, the first pulley set, the dynamic pulley 6 and is connected to the support on the top of the counterweight 3.

[0023] A second steel wire rope 7 is connected to the bottom of the counterweight 3. The second steel wire rope 7 passes through the second pulley set and the roadway wall 13. The mechanical locking device 2 is connected to the second steel wire rope 7 of the two sides of the roadway wall 13. The mechanical locking device 2 is used to lock the second steel wire rope 7 of the other side when the second steel wire rope 7 of one side is pulled. When in use, the pulley sets are added at the two door plates 1. The first steel wire rope 5 passes through the first pulley set and is connected to the counterweight 3. The other end of the counterweight 3 uses the second steel wire rope 7 to pass through the second pulley set and is connected to the mechanical locking device 2. When one door plate 1 is opened, the mechanical locking device locks the second steel wire rope 7 of the other door plate 1, so that the other door plate 1 cannot be opened, thereby realizing the linkage locking function of the two single-fan air doors and eliminating the problem that the two air doors can be opened by 50% at the same time. At the same time, the gravity of the counterweight 3 is used to pull the first steel wire rope 5 to drive the door plate 1 to reset, thereby realizing the self-closing function of the two single-fan air doors.

[0024] A support arm 8 is arranged above the front side of the roadway wall 13. The guide wheel 4 is rotatably arranged below the support arm 8. The first pulley set comprises a first fixed pulley 9 and a second fixed pulley 10. The first steel wire rope 5 passes through the guide wheel 4, the first fixed pulley 9, the dynamic pulley 6, the second fixed pulley 10 and is connected to the support on the top of the counterweight 3. The second pulley set comprises a third fixed pulley 11 and a steering wheel 12. The third fixed pulley 11 is provided with two groups. The second steel wire rope 7 passes through the third fixed pulley 11 and the steering wheel 12 and is connected to the mechanical locking device 2. When in use, the pulley sets are added at the two door plates 1. The first steel wire rope 5 passes through the guide wheel 4, the first fixed pulley 9, the dynamic pulley 6, the second fixed pulley 10 and is connected to the support on the top of the counterweight 3. The other end of the counterweight 3 uses the second steel wire rope 7 to pass through the third fixed pulley 11 and the steering wheel 12 and is connected to the mechanical locking device 2. When one door plate 1 is opened, the mechanical locking device locks the second steel wire rope 7 of the other door plate 1, so that the other door plate 1 cannot be opened, thereby realizing the linkage locking function of the two single-fan air doors.

[0025] Two sides of the mechanical locking device 2 are elastically reset to rotate around the winding roller 14, and the second steel wire rope 7 on both sides is wound on the winding roller 14. An encoder is arranged on the winding roller 14. A clamping groove 15 is arranged at the edge of the end of the winding roller 14, and a limiting tooth 16 matched with the clamping groove 15 is arranged inside the mechanical locking device 2 on one side of the winding roller 14. The limiting tooth 16 is driven to rotate by a motor. A single-chip microcomputer 17 is arranged at the middle position of the top of the mechanical locking device 2. The signal output end of the encoder is connected to the single-chip microcomputer 17, and the control end of the single-chip microcomputer is connected to the motor. In use, when one door plate 1 is opened, the second steel wire rope 7 is pulled to rotate a set of winding rollers 14, triggering the encoder to calculate the stroke, and the encoder sends a signal to the single-chip microcomputer, which controls the motor to drive the limiting tooth 16 at the other set of winding rollers 14 to rotate and lock into the clamping groove 15, thereby locking the second steel wire rope 7 of the other door plate 1, ensuring that the other door plate 1 cannot be opened, thereby realizing the linkage locking function of the two single-leaf air doors. At the same time, the weight block 3 is pulled by the first steel wire rope 5 to reset the door plate 1, realizing the self-closing function of the two single-leaf air doors. In this process, the winding roller 14 can be elastically reset by the action of the coil spring.

[0026] Embodiment two

[0027] According to Figure 1 、 2 , 3, the embodiment provides a self-closing locking device for a single-leaf air door in a coal mine, which comprises a door plate 1, a mechanical locking device 2 and a weight block 3. The door plate 1 is arranged on a roadway wall 13. The mechanical locking device 2 is hung between the roadway walls 13 on both sides. A guide wheel 4 is rotatably arranged above the front side of the roadway wall 13. A first steel wire rope 5 is connected to the front side of the door plate 1. A dynamic pulley 6 is rotatably installed on the top of the weight block 3 through a support. A first pulley group and a second pulley group are arranged on the roadway wall 13 at one end position of the door plate 1. The first steel wire rope 5 passes through the guide wheel 4, the first pulley group, the dynamic pulley 6 and is connected to the support on the top of the weight block 3.

[0028] The bottom of the counterweight 3 is connected with a second steel wire rope 7, the second steel wire rope 7 passes through a second pulley block and a roadway wall 13, the mechanical locking device 2 is connected with the second steel wire rope 7 on both sides of the roadway wall 13, and the mechanical locking device 2 is used for locking the second steel wire rope 7 on the other side when the second steel wire rope 7 on one side is pulled. In use, the pulley block is installed at the two door plates 1, the first steel wire rope 5 is wound around the first pulley block and connected with the counterweight 3, the other end of the counterweight 3 is connected with the mechanical locking device 2 through the second steel wire rope 7, when one door plate 1 is opened, the mechanical locking device locks the second steel wire rope 7 of the other door plate 1, so that the other door plate 1 cannot be opened, thereby realizing the linkage locking function of the two single-leaf air doors, and eliminating the problem that the two air doors can be opened by 50% at the same time. Meanwhile, by using the gravity of the counterweight 3, the first steel wire rope 5 is pulled to drive the door plate 1 to reset, thereby realizing the self-closing function of the two single-leaf air doors.

[0029] The running mode of the mechanical locking device stroke 2 and the door plate 1 stroke ratio is 3:1, and the stroke ratio can be flexibly adjusted by increasing or decreasing the pulley. The counterweight 3 can be flexibly selected according to the frictional resistance of the air door. If the frictional resistance is large when the air door is closed, the weight of the counterweight 3 can be increased, and vice versa. Thus, the self-closing function of the air door is realized. The mechanical locking device 2 can also be built-in with a locking disc. When the first door plate 1 is opened, the locking disc is driven to rotate by the steel wire rope. After the limiting clamping groove on the locking disc leaves the original position, the limiter is clamped and locked. The second door plate 1 enters the locking state. This locking mode eliminates the redundant length required for the steel wire rope locking, and realizes the rigorous locking function.

[0030] The self-closing locking device of the single-leaf air door for coal mine installs the pulley block at the two door plates 1, uses the first steel wire rope 5 to wind around the first pulley block and connect with the counterweight 3, uses the second steel wire rope 7 to wind around the second pulley block and connect with the mechanical locking device 2 at the other end of the counterweight 3, when one door plate 1 is opened, the mechanical locking device locks the second steel wire rope 7 of the other door plate 1, so that the other door plate 1 cannot be opened, thereby realizing the linkage locking function of the two single-leaf air doors, and eliminating the problem that the two air doors can be opened by 50% at the same time. Meanwhile, by using the gravity of the counterweight 3, the first steel wire rope 5 is pulled to drive the door plate 1 to reset, thereby realizing the self-closing function of the two single-leaf air doors. In addition, through the pulley block, the problem of stroke mismatching between the mechanical locking device 2 and the door plate 1 can be eliminated, the operability of the mechanical locking device is improved, the use range and application scene are expanded, the stroke ratio between the mechanical locking device 2 and the door plate 1 can be flexibly adjusted by adjusting the layout mode of the pulley block, so as to adapt to more use scenes, realize the rigorous locking function of the two single-leaf air doors, and further ensure the stability and reliability of the ventilation system.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-closing lock device for a single-leaf air door in a coal mine, comprising a door leaf (1), a mechanical locking device (2) and a counterweight (3), characterized in that: The door plate (1) is arranged on the roadway wall (13), the mechanical locking device (2) is hung between the two sides of the roadway wall (13), the guide wheel (4) is rotatably arranged above the front side of the roadway wall (13), the first steel wire rope (5) is connected to the top of the front side of the door plate (1), the top of the counterweight (3) is rotatably provided with a movable pulley (6) through a support, the first pulley block and the second pulley block are arranged on the roadway wall (13) at one end of the door plate (1), the first steel wire rope (5) passes through the guide wheel (4), the first pulley block, the movable pulley (6) and is connected to the support at the top of the counterweight (3); The bottom of the counterweight (3) is connected with the second steel wire rope (7), the second steel wire rope (7) passes through the second pulley block and the roadway wall (13), the mechanical locking device (2) is connected with the second steel wire rope (7) of the two sides of the roadway wall (13), and the mechanical locking device (2) is used for locking the second steel wire rope (7) of the other side when the second steel wire rope (7) of one side is pulled.

2. A self-closing lock device for a single-leaf air door for coal mines according to claim 1, characterized in that: The front side of the roadway wall (13) is provided with a support arm (8), and the guide wheel (4) is rotatably arranged below the support arm (8).

3. A self-closing lock device for a single-leaf air door for coal mines according to claim 1, characterized in that: The first pulley block comprises a first fixed pulley (9) and a second fixed pulley (10), and the first steel wire rope (5) passes through the guide wheel (4), and then passes through the first fixed pulley (9), the movable pulley (6), the second fixed pulley (10) and the support at the top of the counterweight (3) in sequence.

4. The self-closing lock assembly for a single-pivot damper for coal mines according to claim 1, characterized in that: The second pulley block comprises a third fixed pulley (11) and a steering wheel (12), the third fixed pulley (11) is provided with two groups, and the second steel wire rope (7) passes through the third fixed pulley (11) and the steering wheel (12) in sequence and reaches the mechanical locking device (2).

5. A self-closing lock device for a single-leaf air door for coal mines according to claim 1, characterized in that: The two sides of the mechanical locking device (2) are rotatably provided with winding rollers (14) which are elastically reset, the second steel wire ropes (7) on the two sides are wound on the winding rollers (14) on the two sides respectively, and the winding rollers (14) are provided with encoders.

6. A self-closing lock assembly for a single-leaf air door for coal mines according to claim 5, characterized in that: The edge of the end of the winding roller (14) is provided with a clamping groove (15), and the mechanical locking device (2) is rotatably arranged inside the clamping groove (15) on one side of the winding roller (14), and the clamping groove (15) is matched with a limiting tooth (16), and the limiting tooth (16) is rotatably driven by a motor.

7. A self-closing lock assembly for a single-leaf air door for coal mines according to claim 6, characterized in that: A single-chip microcomputer (17) is arranged at the middle position of the top of the mechanical locking device (2), the signal output end of the encoder is connected with the single-chip microcomputer (17), and the control end of the single-chip microcomputer is connected with the motor.

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