Automatic alarm structure based on shutdown of main ventilator for coal mine

Abstract

The utility model discloses a shutdown automatic alarm structure based on a main ventilator for a coal mine, which relates to the technical field of coal mine safety and comprises a driving box, a double-end cylinder is fixedly mounted at the middle end in the driving box and is electrically connected with a control unit of the main ventilator, and sliders are fixed at two telescopic ends of the double-end cylinder. The double-head air cylinder is electrically connected with the control unit of the main ventilator, when a sensor in the main ventilator detects that equipment is shut down, the double-head air cylinder is started to operate through the control unit, the two protective covers are driven to move towards the two sides, and operation of the alarm host is started synchronously; in daily use, the alarm host can be effectively shielded and protected through the two protective covers, in subsequent disassembly and maintenance of the device, the alarm host is unlocked through the transmission assembly, then the two protective covers are opened, the alarm host can be rapidly taken down, bolts do not need to be disassembled again, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine safety, especially relates to a main fan stoppage automatic alarm structure based on coal mine. BACKGROUND

[0002] The main fan of coal mine is the core equipment of mine ventilation system, and once the main fan stops, it may cause gas accumulation, insufficient oxygen and other safety hazards, therefore, an automatic alarm structure is designed, which can send an alarm in time when the main fan stops, reminding relevant personnel to take measures.

[0003] A main fan stoppage automatic alarm device based on coal mine (CN211059052U) can be referred to in the prior art, when the main fan stops, a normally closed contact of the intermediate relay in the output loop of the switch cabinet of the main fan is short-circuited, so that the alarm lamp and the stepping motor are turned on, the alarm lamp is lit, and the stepping motor starts to act, and the alarm lamp can prompt the post staff to handle as soon as possible.

[0004] In the prior art, the current main fan mainly detects the stop through the internal sensor unit, and when the stop is detected, the alarm device electrically connected is started by the control module, prompting the on-site workers, as shown in the above literature, the alarm device is generally fixed on the main fan, and needs to be exposed to the harsh environment of the coal mine for a long time, so that the alarm device is easily worn by the stress of the environment, and the installation of the alarm device generally adopts the welding or bolt fixing mode, which is convenient to install but still needs to take out the bolt again when disassembled subsequently, therefore, the present application designs an automatic alarm structure which improves the protection effect and is convenient to disassemble. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, and provides a main fan stoppage automatic alarm structure based on coal mine. The utility model through the electric connection of double head cylinder and the control unit of main fan, when the internal sensor of main fan detects the equipment stop, the running of double head cylinder is started through the control unit, two protective covers are driven to move to both sides, the running of alarm host computer is started synchronously, in daily use, the alarm host computer can be effectively shielded and protected through two protective covers, and when disassembled and maintained subsequently, the alarm host computer can be quickly taken down by unlocking the alarm host computer through the transmission assembly, and the bolt does not need to be disassembled again, so that the working efficiency is improved.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] The utility model relates to a kind of based on main fan of coal mine stoppage automatic alarm structure, comprising: drive box, double-end cylinder is fixedly installed in the inside end of the drive box, double-end cylinder is electrically connected with the control unit of main fan, the two telescopic ends of double-end cylinder are fixed with slider, the above of the slider is connected with protective cover by lug, the above of the drive box is fixedly connected with placing table, the upper end of the middle part of placing table is fixed with mounting seat, transmission assembly is arranged in the inside of mounting seat, transmission assembly is connected with two rods and drives two rods reverse linear movement, alarm host computer is clamped and fixed between two rods, and two protective covers completely shield alarm host computer, mounting seat under non-alarm state.

[0008] The utility model further sets up that the middle part of the placing table is provided with movable groove one for the linear movement of two lugs.

[0009] The utility model further sets up that the above of the mounting seat is provided with drive groove and installation groove, and drive groove and installation groove are communicated by movable groove two.

[0010] The utility model further sets up that transmission assembly is arranged in the drive groove, and transmission assembly includes: motor, which is fixedly installed in the inside of the drive groove;Two-way screw rod, which is fixed at the output end of the motor and is rotatably connected in the inside of drive groove;Screw rod seat, which is screw-connected with two on the outside of the two-way screw rod and is slidingly installed in the inside of drive groove.

[0011] The utility model further sets up that the rod is fixed on the surface of screw rod seat and linearly moves in movable groove two.

[0012] The utility model further sets up that the one end of two near the center is fixed with limit block, and the bottom of alarm host computer is integrally connected with docking plate, and two limit blocks are inserted into the limit slot on the both sides of docking plate.

[0013] The utility model further sets up that the side of protective cover is provided with bayonet, and half of alarm host computer and mounting seat can be shielded, and the other side of protective cover is provided with threading port, and the front end of alarm host computer is provided with audible and visual alarm and alarm display screen.

[0014] The utility model further sets up that the front end of drive box is provided with maintenance box, and double-end cylinder and the manual switch of motor are arranged in the inside of maintenance box, and the outside of drive box is integrally connected with fixed plate.

[0015] The utility model has the advantages that:

[0016] 1. The automatic alarm structure is electrically connected with the control unit of the main ventilator through the double-head air cylinder, when the internal sensor of the main ventilator detects that the equipment is stopped, the double-head air cylinder is started through the control unit, two protective covers are driven to move to both sides, the operation of the alarm host is started synchronously, and the alarm host can be effectively shielded and protected by the two protective covers in daily use.

[0017] 2. When the automatic alarm structure is disassembled and maintained subsequently, the locking of the alarm host is released through the transmission assembly, then the two protective covers are opened, and the alarm host can be quickly taken down, so that the work efficiency is improved without disassembling bolts again. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A non-alarm state structure schematic view of the automatic alarm structure based on the main ventilator of the coal mine is provided for the utility model.

[0019] Figure 2 An alarm state structure schematic view of the automatic alarm structure based on the main ventilator of the coal mine is provided for the utility model.

[0020] Figure 3 An internal structure schematic view of the drive box of the automatic alarm structure based on the main ventilator of the coal mine is provided for the utility model.

[0021] Figure 4 An alarm host structure schematic view of the automatic alarm structure based on the main ventilator of the coal mine is provided for the utility model.

[0022] Figure 5 An internal structure schematic view of the mounting seat of the automatic alarm structure based on the main ventilator of the coal mine is provided for the utility model.

[0023] In the figure: 1, drive box; 2, placing table; 3, protective cover; 4, fixed plate; 5, maintenance box; 6, bayonet; 7, alarm host; 8, mounting seat; 9, threading port; 10, double-head air cylinder; 11, sliding block; 12, protruding block; 13, movable groove one; 14, audible and visual alarm; 15, alarm display screen; 16, butt joint plate; 17, limiting groove; 18, motor; 19, bidirectional screw rod; 20, screw rod seat; 21, rod; 22, limiting block; 23, driving groove; 24, mounting groove; 25, movable groove two. DETAILED DESCRIPTION

[0024] The technical scheme of the patent will be further described in detail in combination with specific implementation manners.

[0025] Embodiments of the present patent are described below in detail with reference to examples illustrated in the accompanying drawings, in which like or similar elements or components having the same or similar functions and / or compositions are designated with the same reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present patent, and should not be understood as limiting the present patent.

[0026] In the description of the present patent, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present patent.

[0027] In the description of the present patent, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0028] Referring to Figures 1-5 , a kind of automatic alarm structure based on coal mine main fan shutdown, comprising: drive box 1, the upper portion of drive box 1 is fixedly connected with placing table 2, placing table 2 is provided with mounting seat 8 in the upper portion, alarm host 7 is installed in the upper portion of mounting seat 8, two reverse straight line movement protective cover 3 are provided in the upper portion of placing table 2, two protective cover 3 can just shield protection alarm host 7, mounting seat 8 after moving to middle part, and fixed plate 4 is integrally connected on the outside of drive box 1, and the device is fixed on main fan by fixed plate 4.

[0029] Specifically, as shown in the figure, Figure 3 Double-head cylinder 10 is fixedly installed in the inner middle end of drive box 1, both telescopic ends of double-head cylinder 10 are fixed with sliding block 11, and both sliding blocks 11 are slidingly fitted in the inner portion of drive box 1.

[0030] Further, the upper portion of both sliding blocks 11 is integrally connected with protruding block 12, and movable groove one 13 is formed in the middle portion of placing table 2, both protruding blocks 12 are straightly moved in movable groove one 13.

[0031] Further, the upper portion of both protruding blocks 12 is fixed with protective cover 3, so that the operation of double-head cylinder 10 can drive both protective covers 3 to move reversely and straightly.

[0032] In this embodiment, as shown in Figure 2 The double-end cylinder 10 is electrically connected with the control unit of the main ventilator. When the control unit receives a shutdown signal, the double-end cylinder 10 is automatically opened to move the two protective covers 3 to the two sides, so that the alarm host 7 is exposed to the outside to perform alarm prompting.

[0033] In addition, the side of the protective cover 3 is provided with a bayonet 6. When the two protective covers 3 are moved to the middle, the cavity formed by the two bayonets 6 can just accommodate the alarm host 7 and the mounting seat 8.

[0034] Meanwhile, the other side of the protective cover 3 is provided with a threading hole 9 for connecting the line of the alarm host 7 with the control unit.

[0035] The alarm host 7 is specifically as shown in Figure 4 The front end of the alarm host 7 is provided with an audible and visual alarm 14 and an alarm display screen 15. The audible and visual alarm 14 is electrically connected with the control unit. The audible and visual alarm 14 is synchronously opened with the double-end cylinder 10. The alarm display screen 15 is used to display the current state and alarm information.

[0036] Further, the bottom of the alarm host 7 is integrally connected with a docking plate 16. The two sides of the docking plate 16 are provided with limiting grooves 17.

[0037] The inside of the mounting seat 8 is specifically as shown in Figure 5 The inside of the mounting seat 8 is specifically as shown in

[0038] Further, the driving groove 23 is provided with a transmission assembly. The transmission assembly includes a motor 18, a bidirectional screw rod 19, and a screw rod seat 20. The motor 18 is fixed in the driving groove 23. The bidirectional screw rod 19 is fixedly and rotatably connected with the output end of the motor 18 in the driving groove 23. The screw rod seat 20 is provided with two screw rod seats 20 which are screw-connected outside the bidirectional screw rod 19.

[0039] Further, the two screw rod seats 20 are symmetrically distributed with the center of the bidirectional screw rod 19.

[0040] In this embodiment, the rotation of the bidirectional screw rod 19 is driven by the motor 18, and the two screw rod seats 20 are reversely linearly moved with the center of the bidirectional screw rod 19.

[0041] Specifically, the surface of the two screw rod seats 20 is connected with a rod 21. The two rods 21 are linearly moved in the movable groove 25. The two rods 21 are provided with a limiting block 22 at one end close to the center.

[0042] Further, when the two screw rod seats 20 drive the two penetrating rods 21 to move towards the middle part, the two limiting blocks 22 are inserted into the limiting grooves 17 on both sides of the docking plate 16, so that the docking plate 16 is quickly clamped and fixed, and the alarm host 7 is correspondingly clamped and fixed above the mounting seat 8.

[0043] Specifically, as shown in the drawings, the front end of the drive box 1 is provided with an inspection box 5, the inspection box 5 adopts a key lock closing mode, and the inspection box 5 is internally provided with a double-head air cylinder 10 and a manual switch of a motor 18. Figure 1

[0044] In another embodiment, when the alarm host 7 needs to be disassembled and maintained, the inspection box 5 is opened to start the motor 18 to run, so that the two limiting blocks 22 are separated from the limiting grooves 17, the locking of the alarm host 7 is released, then the double-head air cylinder 10 is started to run so that the two protective covers 3 move to the two sides, and the alarm host 7 can be quickly taken out without disassembling the bolts again.

[0045] Working principle: when the utility model is used, the double-head air cylinder 10 is electrically connected with the control unit of the main ventilator, when the internal sensor of the main ventilator detects that the equipment is stopped, the double-head air cylinder 10 is started to run through the control unit, the two protective covers 3 are driven to move to the two sides, and the operation of the alarm host 7 is started synchronously, in daily use, the two protective covers 3 can effectively shield and protect the alarm host 7, and when the alarm host 7 needs to be disassembled and maintained, the inspection box 5 is opened to start the motor 18 to run, so that the two limiting blocks 22 are separated from the limiting grooves 17, the locking of the alarm host 7 is released, then the double-head air cylinder 10 is started to run so that the two protective covers 3 move to the two sides, and the alarm host 7 can be quickly taken out without disassembling the bolts again.

[0046] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.​

Claims

1. A coal mine main fan shutdown-based automatic alarm structure, comprising: The utility model provides an automatic alarm structure of coal mine main ventilator stoppage based on drive box (1), its characterized in be, inside end fixed mounting of drive box (1) double -end cylinder (10), double -end cylinder (10) with the control unit electric connection of main ventilator, and the two telescopic ends of double -end cylinder (10) are all fixed with slide (11), the top of slide (11) all are connected with the protective cover (3) through the lug (12), the top fixed connection of drive box (1) has the placement platform (2), and the upper end middle part of placement platform (2) is fixed with mounting seat (8), and the inside setting of mounting seat (8) has transmission assembly, and transmission assembly is connected with two through rods (21) and drives two through rods (21) reverse linear movement, and the alarm host computer (7) is clamped fixed between two through rods (21), and in the unalarmed state, two protective covers (3) completely shield alarm host computer (7), mounting seat (8).

2. The main fan stoppage automatic alarm structure for coal mine based on claim 1, characterized in that, The middle part of the placement platform (2) is provided with a movable groove (13) for the linear movement of the two lugs (12).

3. The main fan stoppage automatic alarm structure for coal mine based on claim 1, characterized in that, The upper part of the mounting seat (8) is provided with a driving groove (23) and a mounting groove (24), and the driving groove (23) and the mounting groove (24) are communicated through a movable groove (25).

4. The main fan stoppage automatic alarm structure for coal mine based on claim 3, characterized in that, The transmission assembly is arranged in the driving groove (23), and the transmission assembly comprises: A motor (18) is fixedly installed in the inside of the driving groove (23); A bidirectional screw rod (19) is fixed to the output end of the motor (18) and rotationally connected to the inside of the driving groove (23); A screw rod seat (20) is threadedly connected with two external parts of the bidirectional screw rod (19) and slidingly installed in the inside of the driving groove (23).

5. The main fan stoppage automatic alarm structure for coal mine based on claim 1, characterized in that, The through rods (21) are fixed to the surface of the screw rod seat (20) and linearly move in the movable groove (25).

6. The main fan stoppage automatic alarm structure for coal mine based on claim 1, characterized in that, The two through rods (21) are fixed with limit blocks (22) at one end close to the center, and the bottom of the alarm host computer (7) is integrally connected with a butt joint plate (16), and the two limit blocks (22) are inserted into the limit grooves (17) on both sides of the butt joint plate (16).

7. The main fan stoppage automatic alarm structure for coal mine based on claim 1, characterized in that, The protective cover (3) is provided with a bayonet (6) on the side surface, which can shield half of the alarm host computer (7) and the mounting seat (8), and the other side of the protective cover (3) is provided with a wire hole (9), and the front end of the alarm host computer (7) is provided with a sound and light alarm (14) and an alarm display screen (15).

8. The automatic alarm structure of coal mine main ventilator stoppage based on the drive box (1) of claim 1, the front end of the drive box (1) is provided with a maintenance box (5), a double-end cylinder (10) and a motor (18) are arranged in the maintenance box (5), and a fixed plate (4) is integrally connected to the outside of the drive box (1).

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