CN216043839U

CN216043839U - Coal mine underground air door

Info

Publication number: CN216043839U
Application number: CN202122315857.0U
Authority: CN
Inventors: 徐国昌; 朱峰
Original assignee: Wugou Coal Mine Anhui Hengyuan Coal Industry And Electricity Power Co ltd
Current assignee: Wugou Coal Mine Anhui Hengyuan Coal Industry And Electricity Power Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-03-15
Anticipated expiration: 2031-09-18

Abstract

The utility model relates to a coal mine underground air door which comprises a first door body and a second door body, wherein the two door bodies are arranged in an underground passage to form a sealed space. The door body is provided with an air channel. One end of the air channel is connected with a horn, and the other end of the air channel is provided with a push plate in a sliding way. And a connecting spring is arranged between the push plate and the air channel. A push rod is arranged on the push plate, and one end of the push rod extends out of the air channel; the door body comprises a door frame and a door leaf, wherein an installation shaft is installed on one side of the door frame, the door leaf is fixedly connected with the installation shaft, an installation cavity is formed in the door frame, and a driving gear is installed on the installation shaft; the installation cavity is internally provided with a driven shaft, the driven shaft is provided with a cam and a driven gear, and the cam is in sliding contact with one end of the push rod outside the air channel. Through installing air duct on the door body to connect loudspeaker and push pedal respectively at air duct both ends, can send the prompt tone at the door leaf opening with the in-process of closing, remind opposite side personnel this moment someone through the door body, played the warning effect.

Description

Coal mine underground air door

Technical Field

The utility model relates to the technical field of underground ventilation equipment of a coal mine, in particular to an underground air door of the coal mine.

Background

The air door is important equipment for isolating air flow and passing vehicles and pedestrians under a coal mine, and mainly realizes the control of the underground air flow. And the colliery is air door in the pit requires to arrange two doors at least, under the condition that one air door was closed, could realize the opening of another door, and two doors can not open simultaneously promptly, otherwise leads to leaking out or the short circuit of wind current, influences mine ventilation system.

Among the prior art, in order to realize the purpose that twice air door can not open simultaneously, set up audible and visual alarm device respectively on twice air door usually, open the back when one of them air door, two audible and visual alarm devices all can send audible and visual alarm, and the temporary air door of suggestion staff can not open to remind the staff to make reasonable judgement, avoid the emergence of accident. However, when the audible and visual alarm device fails, the worker cannot know the opening or closing state of the opposite air door in time and cannot give a prompt when the air door is opened, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a coal mine underground air door aiming at the problem that the opening or closing state of two air doors cannot be effectively fed back when the audible and visual alarm on the existing air door structure is damaged or fails.

A coal mine underground air door comprises a first door body and a second door body which have the same structure, wherein the first door body and the second door body are vertically arranged in an underground channel, and a sealing space is formed between the two door bodies; air channels are vertically arranged on the first door body and the second door body, and one-way air inlet valves are arranged on the side walls of the middle parts of the air channels; one end of the air channel, which is positioned outside the sealed space, is connected with a horn; a push plate is slidably arranged in one end of the air channel positioned in the sealed space; a connecting spring is arranged between the push plate and the end wall of the air channel; a push rod is fixedly arranged on the push plate, and one end of the push rod movably extends out of the air channel;

the first door body and the second door body respectively comprise a door frame and a door leaf which are matched with each other, an installation shaft is rotatably installed on one side of the door frame, and a driving gear is fixedly installed on the installation shaft; the door leaf is fixedly connected with the mounting shaft, and a mounting cavity for accommodating the mounting shaft is formed in the door frame; a driven shaft is rotatably mounted in the mounting cavity, a cam and a driven gear meshed with the driving gear are fixedly mounted on the driven shaft, and the outer contour of the cam is in sliding contact with one end of the push rod, which is positioned outside the air channel; when the push plate slides to one side of the horn in the air channel, air in the air channel is exhausted by the horn, and the horn gives out prompt sound.

Above-mentioned colliery is air door in pit through installing two air ducts between two door bodies to connect loudspeaker and push pedal respectively at the air duct both ends, can send the prompt tone at the door leaf opening with the in-process of closing, remind opposite side personnel someone this moment or have the car through two door bodies, played the warning effect, simultaneously, the personnel of opposite side are close the door body more, and the prompt tone is clear more, and the prompt effect is better.

In one embodiment, the transmission ratio of the driving gear to the driven gear is not less than 10.

In one embodiment, the horn is located on the side of the door frame where the mounting shaft is not mounted.

In one embodiment, a door handle is mounted on the door leaf.

In one embodiment, the horn is provided with a vent valve.

In one embodiment, audible and visual alarms are arranged on the two door frames.

In one embodiment, a lock and a structure are arranged between the door frame and the door leaf, and the lock and the structure comprise a clamping block, a limiting block, a movable plate, an L-shaped connecting rod and two pushing blocks; the clamping block is arranged at one end of the door leaf far away from the mounting shaft, and a clamping groove is formed in the side wall of the clamping block; a cavity and a groove matched with the clamping block are formed in the door frame; the limiting block is movably arranged in the door frame, and one end of the limiting block is positioned in the groove and matched with the clamping groove; the movable plate is movably arranged in the cavity, and the movable directions of the movable plate and the limiting block are mutually vertical; the movable plate is connected with the limiting block through an L-shaped connecting rod, a return spring is arranged between the movable plate and the side wall of the cavity, and the return spring is parallel to the limiting block; two ejector pad one end all are installed on the fly leaf, and the equal activity of the other end extends to the door frame outside.

In one embodiment, the two sides of the end, far away from the installation shaft, of the door frame are provided with notches, and the pushing block is located at the outer end of the door frame and is always located in the notches.

In one embodiment, the end of the fixture block close to the groove and the end of the limiting block in the groove are both provided with guide surfaces which are matched with each other, and when the fixture block enters the groove and contacts with the limiting block, the limiting block is driven by the guide surfaces to slide in the direction away from the groove.

In one embodiment, an inwards concave adjusting groove is formed in one side, attached to a door leaf, of a door frame; the activity is provided with the buffer beam in the adjustment tank, and buffer beam one end is connected with the buffer spring who parallels with the buffer beam, and buffer spring fixes in the adjustment tank, and the buffer beam other end is located the door frame and just installs the rubber pad outward.

Compared with the prior art, the utility model has the following beneficial effects:

through installing two air duct between two door bodies to connect loudspeaker and push pedal respectively at the air duct both ends, open at the door leaf and can send the prompt tone with closing the in-process, remind opposite side personnel someone this moment or have the car through two door bodies, played the warning effect, simultaneously, the personnel of opposite side are close the door body more, and the prompt tone is clear more, and the suggestion effect is better.

Drawings

FIG. 1 is a structural layout diagram of an underground coal mine air door;

FIG. 2 is a connection diagram of a door leaf and a door frame in an underground coal mine air door.

FIG. 3 is a layout view of the mounting shaft, the driven shaft, the cam and the air channel in the coal mine underground air door.

FIG. 4 is a detailed view of the connection of the cam, the push rod, the push plate, the air channel and the horn in the coal mine underground air door.

FIG. 5 is a diagram showing a specific connection structure between a door leaf and a door frame in an underground coal mine air door.

FIG. 6 is a structural diagram of a damper groove, a buffer rod and a buffer spring in an underground air door of a coal mine.

In the figure: 1-door frame, 2-door leaf, 3-door handle, 4-mounting shaft, 5-air channel, 6-driving gear, 7-driven gear, 8-driven shaft, 9-cam, 10-horn, 11-push rod, 12-connecting spring, 13-push plate, 14-one-way air inlet valve, 15-notch, 16-push block, 17-cavity, 18-movable plate, 19-L-shaped connecting rod, 20-groove, 21-limiting block, 22-clamping block, 23-clamping groove, 24-adjusting groove, 25-buffer spring, 26-buffer rod, 27-rubber pad and 28-reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2, 3 and 4, the embodiment discloses a coal mine underground air door, which comprises a first door body and a second door body with the same structure, wherein the first door body and the second door body are vertically installed in an underground passage, and a sealed space is formed between the two door bodies; the first door body and the second door body are both vertically provided with air channels 5, and the side wall of the middle part of each air channel 5 is provided with a one-way air inlet valve 14; one end of the air channel 5, which is positioned outside the sealed space, is connected with a loudspeaker 10; a push plate 13 is arranged in the air channel 5 at one end in the sealed space in a sliding manner; a connecting spring 12 is arranged between the push plate 13 and the end wall of the air channel 5; a push rod 11 is fixedly arranged on the push plate 13, and one end of the push rod 11 movably extends out of the air channel 5;

the first door body and the second door body respectively comprise a door frame 1 and a door leaf 2 which are matched with each other, an installation shaft 4 is rotatably installed on one side of the door frame 1, the door leaf 2 is fixedly connected with the installation shaft 4, an installation cavity for accommodating the installation shaft 4 is formed in the door frame 1, and a driving gear 6 is fixedly installed on the installation shaft 4; a driven shaft 8 is rotatably mounted in the mounting cavity, a cam 9 and a driven gear 7 meshed with the driving gear 6 are fixedly mounted on the driven shaft 8, and the outer contour of the cam 9 is in sliding contact with one end of a push rod 11, which is positioned outside the air channel 5; when the push plate 13 slides to the horn side in the air passage 5, the air in the air passage 5 is discharged from the horn 10, and the horn 10 gives an alarm sound.

The coal mine underground air door comprises two groups of door bodies, two driving gears 6, two driven shafts 8, two air channels 5, a push plate 13, a push rod 11 and a loudspeaker 10. The door body is including door frame 1 and the door leaf 2 that matches each other, and door frame 1 one side is rotated and is installed installation axle 4, door leaf 2 and installation axle 4 fixed connection, and the installation cavity that holds installation axle 4 has been seted up in the door frame 1. In this embodiment, all be provided with audible-visual annunciator on two door frames 1, install door handle 3 on the door leaf 2, be convenient for open. Two driving gears 6 are located the installation intracavity, and two driving gears 6 are fixed the cover respectively and are established on two installation axles 4. Two driven shafts 8 are respectively and rotatably installed in the two installation cavities, and a cam 9 and a driven gear 7 meshed with the driving gear 6 are fixedly installed on the driven shafts 8. Two air channels 5 are installed between the two door frames 1; one end of the air channel 5 is connected with one end of the door frame 1 provided with the mounting shaft 4, and the other end extends out of the other door frame 1; a one-way intake valve 14 is mounted on the side wall of the middle portion of the air passage 5. The outer wall of the push plate 13 is in sliding fit with the side wall of the inner cavity of the air channel 5; a connecting spring 12 is installed between the push plate 13 and the end wall of the air passage 5. One end of the push rod 11 is fixedly connected with the push plate 13, and the other end of the push rod extends out of the air channel 5 and is in sliding contact with the outer contour of the cam 9. The horn 10 is fixedly mounted at the end of the air passage 5 remote from the cam 9.

When one of the door leaves 2 is opened, the door leaf 2 drives the mounting shaft 4 to rotate, the driven shaft 8 is driven to rotate through the meshing of the driving gear 6 and the driven gear 7 while the mounting shaft 4 rotates, the cam 9 rotates in real time under the driving of the driven shaft 8, because one end of the push rod 11 is always attached to the outer contour of the cam 9, the push rod 11 can be extruded in the rotating process of the cam 9 to slide along the air channel 5, air in the air channel 5 is blown into the loudspeaker 10 at the other end of the air channel 5 by the push plate 13, and the loudspeaker 10 gives out a prompt sound to remind a worker outside the other door body that the door leaf 2 is opened at the moment; after the push plate 13 moves to the extreme position, the push rod 11 and the push plate 13 are reset along the air channel 5 under the action of the connecting spring 12, and in the resetting process, the one-way air inlet valve 14 is opened to suck air into the air channel 5 to wait for the next prompt tone. Through installing two air duct 5 between two door bodies to connect loudspeaker 10 and push pedal 13 respectively at air duct 5 both ends, can send the prompt tone at door leaf 2 opening and closing in-process, remind opposite side personnel someone this moment or have the car through two door bodies, played the warning effect, simultaneously, the personnel of opposite side are close the door body more, and the prompt tone is clear more, and the suggestion effect is better.

In order to enhance the indication effect, in the present embodiment, the transmission ratio of the driving gear 6 to the driven gear 7 is not less than 10. Through the drive ratio of injecing driving gear 6 and driven gear 7, in door leaf 2 and the rotatory in-process of installation axle 4, loudspeaker 10 sends the prompt tone in succession, and the effect is better. Of course, to further enhance the prompting effect, the speaker 10 may be installed on the side of the door frame 1 where the installation shaft 4 is not installed, and the person approaches the speaker 10 when preparing to open the door 2.

Referring to fig. 5, in the present embodiment, a lock and a structure are disposed between the door frame 1 and the door leaf 2, and the lock and the structure include a fixture block 22, a limiting block 21, a movable plate 18, an L-shaped connecting rod 19, and two pushing blocks 16; the fixture block 22 is installed at one end of the door leaf 2 far away from the installation shaft 4, and a clamping groove 23 is formed in the side wall; a cavity 17 and a groove 20 matched with the clamping block 22 are formed in the door frame 1; the limiting block 21 is movably arranged in the doorframe 1, and one end of the limiting block 21 is positioned in the groove 20 and matched with the clamping groove 23; the movable plate 18 is movably arranged in the cavity 17, and the movable directions of the movable plate 18 and the limiting block 21 are mutually vertical; the movable plate 18 is connected with the limiting block 21 through an L-shaped connecting rod 19, a return spring 28 is arranged between the movable plate and the side wall of the cavity 17, and the return spring 28 is parallel to the limiting block 21; one end of each of the two pushing blocks 16 is mounted on the movable plate 18, and the other end thereof movably extends to the outside of the door frame 1. When the door leaf 2 and the door frame 1 need to be opened, one of the push blocks 16 is pressed. The pushing block 16 drives the movable plate 18 to move in the cavity 17, and drives the limiting block 21 to move through the L-shaped connecting rod 19, so as to disengage from the slot 23 of the clamping block 22, and at this time, the door leaf 2 can be normally opened.

In this embodiment, notch 15 has all been seted up to the both sides that installation axle 4 one end was kept away from to door frame 1, and ejector pad 16 is located the outer one end of door frame 1 and is located notch 15 all the time. The push block 16 can be hidden between the doorframe 1 and the channel to prevent the false opening.

In this embodiment, the one end that fixture block 22 is close to recess 20 and the one end that stopper 21 is located recess 20 all are provided with the guide face of mutually supporting, and when fixture block 22 got into recess 20 and contacted with stopper 21, drive stopper 21 through the guide face and slide to the direction of keeping away from recess 20, and the type of guide face can be conical surface, inclined plane, arc surface. By providing a guiding surface, the locking of the door leaf 2 to the door frame 1 is made more fluid when the door leaf is closed.

Referring to fig. 6, in the other embodiment, an inward concave adjusting groove 24 is formed on one side of the door frame 1, which is attached to the door leaf 2; the adjusting groove 24 is internally and movably provided with a buffer rod 26, one end of the buffer rod 26 is connected with a buffer spring 25 parallel to the buffer rod 26, the buffer spring 25 is fixed in the adjusting groove 24, and the other end of the buffer rod 26 is positioned outside the door frame 1 and is provided with a rubber pad 27. Considering that there may be a difference in air pressure between two sides of the door body, so there may be a certain resistance when starting the door leaf 2, the buffer rod 26 and the rubber pad 27 are provided, and when the door leaf is normally locked, the buffer spring 25 is in a compressed state, so that a pushing force is provided when opening to assist opening.

In other embodiments, the speaker 10 may further be provided with a vent valve, when the vent valve is opened, the speaker 10 does not emit any more warning sound, and when the vent valve is closed, the warning sound is normally emitted.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the application of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. The coal mine underground air door is characterized by comprising a first door body and a second door body which have the same structure, wherein the first door body and the second door body are vertically arranged in an underground channel, and a sealing space is formed between the two door bodies; air channels are vertically arranged on the first door body and the second door body, and one-way air inlet valves are arranged on the side walls of the middle parts of the air channels; one end of the air channel, which is positioned outside the sealed space, is connected with a loudspeaker; a push plate is slidably arranged in one end of the air channel positioned in the sealed space; a connecting spring is arranged between the push plate and the end wall of the air channel; a push rod is fixedly arranged on the push plate, and one end of the push rod movably extends out of the air channel;

the first door body and the second door body respectively comprise a door frame and a door leaf which are matched with each other, an installation shaft is rotatably installed on one side of the door frame, and a driving gear is fixedly installed on the installation shaft; the door leaf is fixedly connected with the mounting shaft, and a mounting cavity for accommodating the mounting shaft is formed in the door frame; a driven shaft is rotatably mounted in the mounting cavity, a cam and a driven gear meshed with the driving gear are fixedly mounted on the driven shaft, and the outer contour of the cam is in sliding contact with one end, located outside the air channel, of the push rod;

when the push plate slides to one side of the horn, the air of the air channel is discharged by the horn, and the horn gives out prompt sound.

2. The coal mine underground air door of claim 1, wherein the transmission ratio of the driving gear to the driven gear is not less than 10.

3. The coal mine underground air door according to claim 1, wherein the horn is located on a side of the door frame where the installation shaft is not installed.

4. The coal mine underground air door of claim 1, wherein a door handle is mounted on the door leaf.

5. The coal mine underground air door according to claim 1, characterized in that a vent valve is arranged on the horn.

6. The coal mine underground air door according to claim 1, wherein an audible and visual alarm is arranged on each of the two door frames.

7. The coal mine underground air door according to claim 1, wherein a lock and structure is arranged between the door frame and the door leaf, and the lock and structure comprises a clamping block, a limiting block, a movable plate, an L-shaped connecting rod and two pushing blocks; the clamping block is arranged at one end of the door leaf far away from the mounting shaft, and a clamping groove is formed in the side wall of the clamping block; a cavity and a groove matched with the clamping block are formed in the door frame; the limiting block is movably arranged in the door frame, and one end of the limiting block is positioned in the groove and matched with the clamping groove; the movable plate is movably arranged in the cavity, and the movable directions of the movable plate and the limiting block are mutually vertical; the movable plate is connected with the limiting block through an L-shaped connecting rod, a return spring is arranged between the movable plate and the side wall of the cavity, and the return spring is parallel to the limiting block; two ejector pad one end is all installed on the fly leaf, the equal activity of the other end extends to the door frame is outside.

8. The coal mine underground air door as claimed in claim 7, wherein notches are formed in both sides of one end, away from the installation shaft, of the door frame, and the pushing block is located at the outer end of the door frame and is located in the notches all the time.

9. The coal mine underground air door as claimed in claim 7, wherein one end of the fixture block close to the groove and one end of the limiting block in the groove are provided with guide surfaces which are matched with each other, and when the fixture block enters the groove and contacts with the limiting block, the limiting block is driven by the guide surfaces to slide in a direction away from the groove.

10. The coal mine underground air door according to claim 7, wherein an inward-recessed adjusting groove is formed in one side, attached to the door leaf, of the door frame; the adjustable door frame is characterized in that a buffer rod is movably arranged in the adjusting groove, one end of the buffer rod is connected with a buffer spring parallel to the buffer rod, the buffer spring is fixed in the adjusting groove, and the other end of the buffer rod is located outside the door frame and provided with a rubber pad.