Mining air door pneumatic anti-pinch device

Abstract

The utility model belongs to the technical field of mine ventilation equipment, and particularly relates to a mine air door pneumatic anti-pinch device which is applied to original mine air door ventilation equipment and comprises an air door assembly, an air cylinder assembly, an anti-pinch assembly and an air control box, and the air door assembly comprises a first door body and a second door body; the anti-pinch assembly comprises a seat body, a cover body, a compression spring, a pneumatic mechanical valve and a pneumatic shuttle valve, opening of the pneumatic mechanical valve is controlled by sliding of the cover body on the seat body, then the pneumatic shuttle valve generates a starting signal, and the air control box controls the air cylinder assembly to stop running after receiving the starting signal; according to the pneumatic anti-pinch device for the mining air door, the anti-pinch assembly and the pneumatic control box are additionally arranged on the basis of an original air door assembly, and the pneumatic anti-pinch device aims at solving the problem that in the closing process of the first door body and the second door body, pedestrians are prone to being pinched by the two door bodies when not completely passing through the air door, and human injuries are caused. And the safety of mining production is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine ventilation equipment, in particular to a mine air door pneumatic anti-pinch device. Background Art

[0002] In order to ensure the life safety and physical health of mine workers, coal mines are equipped with ventilation systems underground to provide circulating airflow. In the ventilation system, dampers are the most commonly used ventilation equipment. During the closing process of conventional pneumatic dampers, due to the closing force and the mine wind pressure acting on the door body, the damper will be forced to close quickly when it is about to close. At this time, when pedestrians have not completely passed through the damper, they are very likely to be squeezed between the two door bodies, thus causing personal accidents. Utility Model Content

[0003] In view of this, the utility model provides a pneumatic anti-pinch device for mine dampers, which adds an anti-pinch component and an air control box on the basis of the original damper component, aiming to solve the problem that when the damper is closing and pedestrians have not yet completely passed through the damper, they are easily squeezed between the two doors, causing personal accidents and safety hazards.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:

[0005] A pneumatic anti-pinch device for a mine damper includes a damper assembly and a cylinder assembly. The damper assembly includes a door frame, a first door body, and a second door body. The door frame is provided with the cylinder assembly, and the output end of the cylinder assembly is connected to the first door body and the second door body. The cylinder assembly is also equipped with a control assembly, which controls the operation of the cylinder assembly and thereby controls the first door body and the second door body to open and close in opposite directions. The pneumatic anti-pinch device for a mine damper also includes:

[0006] There are two groups of anti-pinch components, which are respectively arranged on the front and rear sides of the damper assembly. On this basis, any one group of anti-pinch components is arranged on the first door body and is located on the side close to the second door body, and the other group of anti-pinch components is arranged on the second door body and is located on the side close to the first door body. Based on the above structure, when the first door body and the second door body are opened to form a pedestrian passage, the two groups of anti-pinch components are respectively configured to be located on both sides of the pedestrian passage.

[0007] Each group of anti-pinch components includes:

[0008] The base body is a rectangular box without a cover, and is fixedly connected to the first door body and the second door body by bolts;

[0009] The cover body is slidably buckled on the outside of the base body, and the cover body is also a rectangular box body without a cover;

[0010] There are two compression springs, both located between the base and the cover. The two compression springs are located at both ends of the base, and when the two compression springs are in a free state, the cover is partially engaged with the base;

[0011] Two pneumatic mechanical valves are provided, one located on each side of each compression spring. The switches of the two pneumatic mechanical valves are connected to the inner wall of the cover body. In addition, each pneumatic mechanical valve includes an air inlet and an air outlet. The air inlets of the two pneumatic mechanical valves are connected through an air pipe and are simultaneously connected to an external air source through a three-way joint. When the cover body is squeezed, the anti-pinch component is in a triggered state, the pneumatic mechanical valve opens, and the gas from the external air source is diverted by the three-way joint to the air inlets of the two pneumatic mechanical valves and flows out through the air outlet.

[0012] A pneumatic shuttle valve includes two air inlets that are not interconnected, and air outlets that are respectively connected to the two air inlets. The air outlets of the two pneumatic mechanical valves are connected to the two air inlets of the pneumatic shuttle valves through air pipes. When the anti-pinch component is triggered, gas flowing out of the air outlet of the pneumatic mechanical valve passes through the pneumatic shuttle valve and flows out of the air outlet. At this time, the gas is configured as a starting signal.

[0013] Based on the above structure, the pneumatic anti-pinch device for mining dampers also includes an air control box, an air control element is provided inside the air control box, the input end of the air control element is connected to the air outlet of the pneumatic shuttle valve through an air pipe, and the output end of the air control element is connected to the cylinder assembly through an air pipe. After receiving the start signal from the pneumatic shuttle valve, the air control element controls the cylinder assembly to stop running.

[0014] Preferably, in the anti-pinch assembly, a long hole is provided on the side wall of the base body and the side wall of the cover body, and the positions of the two long holes correspond to each other. A bolt is commonly provided inside the two long holes to prevent the cover body from falling off the base body.

[0015] More preferably, the cover and the base are both made of Q235 material.

[0016] Furthermore, the model of the pneumatic mechanical valve is MOV-02; the model of the pneumatic shuttle valve is ST-02.

[0017] The beneficial effects of the present invention are:

[0018] Generally speaking, the utility model installs anti-pinch components on both the first door body and the second door body of the original damper assembly, utilizes the sliding between the base body and the cover body to open the pneumatic mechanical valve, gas begins to flow and forms a start signal through the pneumatic shuttle valve to be transmitted to the air control component. After receiving the start signal, the air control component controls the original cylinder assembly to stop running, thereby stopping the first door body and the second door body from closing, avoiding the occurrence of pedestrian pinching accidents, which is conducive to improving the safety of mining production.

[0019] Specifically, the utility model is provided with a compression spring between the base body and the cover body, which is used for the cover body to pop out and restore its original position after the anti-pinch component initially plays an anti-pinch role and the pedestrian safely leaves between the first door body and the second door body, so as to play the anti-pinch role again, reflecting the practicality of the utility model; in addition, the utility model also provides long holes on the side walls of the base body and the side walls of the cover body, and a bolt is commonly provided inside the two long holes to prevent the cover body from falling off from the base body when the compression spring releases the elastic force; furthermore, the cover body and the base body are both made of Q235 material, which has high strength, thereby improving the service life of the mining damper pneumatic anti-pinch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the use state of the utility model;

[0022] Figure 2 This is a schematic side view of the partial structure of the anti-pinch assembly in the present invention;

[0023] Figure 3 It is a schematic diagram of the partial structure of the anti-pinch component in the utility model from a top view. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings.

[0027] In this technical solution, if Figure 1 As shown, the pneumatic anti-pinch device for mining dampers includes a damper assembly 1, a cylinder assembly 2 and a control assembly, wherein the damper assembly 1 includes a door frame 101, a first door body 102 and a second door body 103, and a cylinder assembly 2 is provided on the door frame 101. The output end of the cylinder assembly 2 is connected to the first door body 102 and the second door body 103. The cylinder assembly 2 is also equipped with a control assembly, which controls the operation of the cylinder assembly 2 through the control assembly, and then controls the first door body 102 and the second door body 103 to perform opening and closing actions in opposite twisting directions.

[0028] It should be noted in this application that the mine damper ventilation equipment formed by the combination of the damper assembly 1, the cylinder assembly 2 and the control assembly is a common equipment in the existing field of mine ventilation devices. Its working principle is: when the detection end and the control end cooperate to determine whether the damper needs to be opened or closed, the control assembly controls the cylinder assembly 2 to operate, thereby driving the first door body 102 and the second door body 103 in the damper assembly 1 to operate and complete the opening and closing action. Generally speaking, the operating principle and process of the mine damper ventilation equipment that can perform the opening and closing action of the first door body 102 and the second door body 103 in opposite directions of twisting are known to those skilled in the art from the existing technical literature, so they will not be elaborated here.

[0029] The technical solution provided by the present application is to install an anti-pinch assembly 3 on both the first door body 102 and the second door body 103. With the cooperation of the air control box 4, it solves the problem that when the damper is closing and the pedestrian has not completely passed through the damper, it is easy to be squeezed by the two door bodies, causing personal accidents and safety hazards.

[0030] Specifically, in the mining air door pneumatic anti-pinch device provided in this application, Figure 1 As shown, there are two groups of anti-pinch components 3, which are respectively arranged on the front and rear sides of the damper assembly 1. On this basis, any one group of anti-pinch components 3 is arranged on the first door body 102 and is located on the side close to the second door body 103, and the other group of anti-pinch components 3 is arranged on the second door body 103 and is located on the side close to the first door body 102.

[0031] Based on the above structure, when the first door body 102 and the second door body 103 are opened to form a pedestrian passage, the two groups of anti-pinch components 3 are respectively configured to be located on both sides of the pedestrian passage.

[0032] Among them, such as Figure 2-3 As shown, each set of anti-pinch components 3 includes:

[0033] The base body 301 is a rectangular coverless box body, which is fixedly connected to the first door body 102 and the second door body 103 by bolts; the cover body 302 is slidably buckled on the outside of the base body 301, and the cover body 302 is also a rectangular coverless box body.

[0034] There are two compression springs 303 , both located between the base 301 and the cover 302 . The two compression springs 303 are respectively located at two ends of the base 301 .

[0035] Based on the above embodiment, when the two compression springs 303 are in a free state, the cover body 302 is partially fastened to the base body 301. When the first door body 102 and the second door body 103 squeeze a pedestrian during the closing process, the cover body 302 slides on the base body 301 toward the base body 301. At this time, the cover body 302 drives the anti-pinch component 3 to perform an anti-pinch operation, and the compression spring 303 is in a compressed state.

[0036] Next, this application will describe in detail the process of the anti-pinch operation of the anti-pinch component 3 and the core components involved.

[0037] like Figure 2-3 As shown, each group of anti-pinch components 3 also includes:

[0038] Pneumatic mechanical valve 304, there are two pneumatic mechanical valves 304, and they are located on one side of each compression spring 303 respectively. The switches of the two pneumatic mechanical valves 304 are connected to the inner wall of the cover body 302, that is, the switches of the pneumatic mechanical valves 304 move with the cover body 302. In addition, each pneumatic mechanical valve 304 includes an air inlet and an air outlet. The air inlets of the two pneumatic mechanical valves 304 are connected through the air pipe 5, and are simultaneously connected to the external air source 7 through the three-way connector 6.

[0039] Based on the above embodiment, when the cover body 302 is squeezed, that is, when the first door body 102 and the second door body 103 are in the closing process and there are pedestrians or other mining equipment between the two, the anti-pinch component 3 is in a triggered state, the pneumatic mechanical valve 304 is opened, and the gas provided by the external gas source 7 is diverted by the three-way connector 6 to the air inlets of the two pneumatic mechanical valves 304 and flows out from the air outlet.

[0040] In addition, each anti-pinch component 3 also includes a pneumatic shuttle valve 305, which includes two non-interconnected air inlets and air outlets respectively connected to the two air inlets. The air outlets of the two pneumatic mechanical valves 304 are connected to the two air inlets of the pneumatic shuttle valve 305 through the air pipe 5. When the anti-pinch component 3 is triggered, the gas flowing out of the air outlet of the pneumatic mechanical valve 304 flows out of the air outlet through the pneumatic shuttle valve 305. At this time, the gas is configured as a start signal.

[0041] Based on the above structure, an air control element is provided inside the air control box 4. The input end of the air control element is connected to the air outlet of the pneumatic shuttle valve 305 through the air pipe 5, and the output end of the air control element is connected to the cylinder assembly 2 through the air pipe 5. After receiving the start signal from the pneumatic shuttle valve 305, the air control element controls the cylinder assembly 2 to stop running. At this time, the first door body 102 and the second door body 103 stop closing to prevent further pinching of pedestrians.

[0042] In the present technical solution, the pneumatic mechanical valve 304 and the pneumatic shuttle valve 305 used are both existing technologies. The model of the pneumatic mechanical valve 304 is MOV-02 and the model of the pneumatic shuttle valve 305 is ST-02. Those skilled in the art can learn their technical principles from existing literature. The present utility model utilizes their working effects. Taking the pneumatic shuttle valve 305 as an example: the pneumatic shuttle valve 305 with model ST-02 includes two air inlets and one air outlet, and each air inlet is separately connected to the air outlet inside the pneumatic shuttle valve 305. This arrangement ensures that when any pneumatic mechanical valve 304 is opened, the pneumatic shuttle valve 305 will eventually generate a start signal, and the gas flowing in the process will not flow back from the pneumatic shuttle valve 305 to another pneumatic mechanical valve 304, which reflects the practicality of the present utility model.

[0043] In addition, it should be noted that the setting of the air control box 4 is a control method commonly used in this field, and the air control box 4 is connected to the control component of the original mine damper ventilation equipment, and is jointly controlled with the original mine damper ventilation equipment to form a complete set of control processes.

[0044] The compression spring 303 provided in the above embodiment is used to pop out the cover body 302 and restore its original position after the anti-pinch component 3 initially plays the anti-pinch role and the pedestrian safely leaves between the first door body 102 and the second door body 103, so as to play the anti-pinch role again, which reflects the practicality of the present invention.

[0045] Furthermore, a slot 306 is provided on the sidewalls of both the base 301 and the cover 302, and the two slots 306 are positioned in corresponding positions. A bolt 307 is located within both slots 306 to prevent the cover 302 from falling off the base 301 when the compression spring 303 releases its force. Furthermore, both the cover 302 and the base 301 are made of high-strength Q235 material, which increases the service life of the pneumatic anti-pinch device for mining dampers.

[0046] Specifically, the pneumatic anti-pinch device for mining dampers provided by the utility model adds an anti-pinch component 3 and an air control box 4 on the basis of the original damper component 1, and installs the anti-pinch component 3 on the front and rear sides of the damper component 1, and the specific positions are: any one group of anti-pinch components 3 is arranged on the first door body 102 and is located on the side close to the second door body 103, and the other group of anti-pinch components 3 is arranged on the second door body 103 and is located on the side close to the first door body 102; at this time, when the first door body 102 and the second door body 103 are opened and a pedestrian passage is formed, the two groups of anti-pinch components 3 are respectively configured to be located on both sides of the pedestrian passage; after the pneumatic mechanical valve 304 and the pneumatic shuttle valve 305 in the anti-pinch component 3 are connected with the air control box 4 and the cylinder assembly 2 according to the control process through the air pipe 5, the pneumatic anti-pinch device for mining dampers can play an anti-pinch role in the process of closing the first door body 102 and the second door body 103.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pneumatic anti-pinch device for a mine damper, comprising a damper assembly and a cylinder assembly, wherein the damper assembly comprises a door frame, a first door body, and a second door body; the door frame is provided with the cylinder assembly, and the output end of the cylinder assembly is connected to the first door body and the second door body; the cylinder assembly is further provided with a control assembly, which controls the operation of the cylinder assembly and thereby controls the first door body and the second door body to open and close in opposite directions of twisting, characterized in that: The pneumatic anti-pinch device for mining air doors also includes: There are two groups of anti-pinch components, which are respectively arranged on the front and rear sides of the damper assembly. On this basis, any one group of anti-pinch components is arranged on the first door body and is located on the side close to the second door body, and the other group of anti-pinch components is arranged on the second door body and is located on the side close to the first door body; when the first door body and the second door body are opened to form a pedestrian passage, the two groups of anti-pinch components are respectively configured to be located on both sides of the pedestrian passage; Each group of anti-pinch components includes: The base body is a rectangular box without a cover, and is fixedly connected to the first door body and the second door body by bolts; The cover body is slidably buckled on the outside of the base body, and the cover body is also a generally rectangular box body without a cover; There are two compression springs, both located between the base and the cover. The two compression springs are located at both ends of the base, and when the two compression springs are in a free state, the cover is partially engaged with the base; Two pneumatic mechanical valves are provided, one located on each side of each compression spring. The switches of the two pneumatic mechanical valves are connected to the inner wall of the cover body. In addition, each pneumatic mechanical valve includes an air inlet and an air outlet. The air inlets of the two pneumatic mechanical valves are connected through an air pipe and are simultaneously connected to an external air source through a three-way joint. When the cover body is squeezed, the anti-pinch component is in a triggered state, the pneumatic mechanical valve opens, and the gas from the external air source is diverted by the three-way joint to the air inlets of the two pneumatic mechanical valves and flows out through the air outlet. A pneumatic shuttle valve includes two air inlets that are not interconnected, and air outlets that are respectively connected to the two air inlets. The air outlets of the two pneumatic mechanical valves are connected to the two air inlets of the pneumatic shuttle valves through air pipes. When the anti-pinch component is triggered, gas flowing out of the air outlet of the pneumatic mechanical valve passes through the pneumatic shuttle valve and flows out of the air outlet. At this time, the gas is configured as a starting signal. The pneumatic anti-pinch device for mining dampers also includes an air control box, an air control element is provided inside the air control box, the input end of the air control element is connected to the air outlet of the pneumatic shuttle valve through an air pipe, and the output end of the air control element is connected to the cylinder assembly through an air pipe. After receiving the start signal from the pneumatic shuttle valve, the air control element controls the cylinder assembly to stop running.

2. The pneumatic anti-pinch device for mining air doors according to claim 1 is characterized in that: In the anti-pinch assembly, a long hole is provided on the side wall of the base body and the side wall of the cover body, and the positions of the two long holes correspond to each other. A bolt is provided inside the two long holes to prevent the cover body from falling off the base body.

3. The pneumatic anti-pinch device for mining air doors according to claim 1 is characterized in that: The cover and the base are both made of Q235 material.

4. The pneumatic anti-pinch device for mining air doors according to claim 1 is characterized in that: The model of the pneumatic mechanical valve is MOV-02; the model of the pneumatic shuttle valve is ST-02.

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