An automatic turnover explosion-proof device

Abstract

The utility model discloses an automatic turnover explosion-proof device, its characterized in that: including the fixed frame of fixed in roadway roof, be provided with multiple sets of turnover frame on the fixed frame, are hung with the explosion -proof water bag on the turnover frame, the rear portion of turnover frame is matched with the fixed frame through the pivot, and the front extension of turnover frame is provided with the lap joint arm, and the lap joint arm is overlapped with the front pivot and is overlapped with the cooperation, and is provided with the release groove of cooperation with lap joint arm on the pivot, still include trigger plate, and trigger plate fixed setting is on the pivot, the utility model discloses structure, can linkage turnover work simultaneously, can also group linkage turnover, can quick, linkage, continuous watering. The structure adopts complete mechanical structure, and the structure is simple, and the stroke is short, and the action is fast, realizes quick watering. The device has no pressure vessel, and has no electric control device, and is reliable in operation. And installation, maintenance are convenient, and the cost is low.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine safety devices, specifically relating to an automatic flipping explosion-proof device. Background Technology

[0002] Coal mine gas and coal dust explosions are extremely serious accidents in gas-prone mines. To prevent or reduce the hazards of explosions, coal mines often use high-pressure extinguishing powder explosion-proof devices and explosion-proof water bag devices. High-pressure extinguishing powder explosion-proof devices spray extinguishing powder under the impact of a gas explosion, effectively extinguishing the gas. However, the high pressure stored in the powder cylinders increases maintenance costs and the risk of injury from accidental explosions. Most existing explosion-proof water bag devices use electronic control to tip the water bag and suspend it in the event of a gas or coal dust explosion underground. However, these electronic control devices are susceptible to power outages or damage, making them unreliable in emergency situations. Utility Model Content

[0003] The purpose of this invention is to provide an automatic flipping explosion-proof device to solve the problems in the current technology.

[0004] This utility model is achieved through the following technical solution: an automatic flipping explosion-proof device, characterized in that: it includes a fixed frame fixed to the roof of the roadway, multiple flipping frames are arranged on the fixed frame, and explosion-proof water bags are suspended on the flipping frames; the rear part of the flipping frame cooperates with the fixed frame through a rotating shaft, and an overlapping arm is provided at the front of the flipping frame, which overlaps with the front rotating shaft; and a release groove that cooperates with the overlapping arm is provided on the rotating shaft; it also includes a trigger plate, which is fixedly arranged on the rotating shaft.

[0005] Furthermore: Limiting plates are fixedly installed at both ends of the rotating shaft near the inner side of the fixed frame; the limiting plates are provided with arc-shaped limiting holes and circular locking holes, and the fixed frame is provided with pin holes corresponding to the limiting holes and locking holes respectively; the limiting locking pins pass through the limiting holes or locking holes and cooperate with the pin holes on the fixed frame; it also includes a tension spring, the two ends of which are connected to the fixed frame and the limiting plates respectively.

[0006] Furthermore, the rotating shaft is provided with a trigger plate slot that mates with the trigger plate and bolt holes for fixing the trigger plate.

[0007] Furthermore: the explosion-proof water bag is connected to the tilting frame via a fixed hook at the rear and a detachable hook at the front.

[0008] Furthermore: a rotating sleeve is fixed at the rear of the tilting frame, and the rotating sleeve is rotatably engaged with the rotating shaft; corresponding linkage holes are provided on the rotating sleeve and the rotating shaft, and the two linkage holes are engaged by a linkage pin.

[0009] The beneficial effects of this utility model are: 1. The structure of this utility model, through the setting of trigger plate, linkage pin, and limit pin, can not only rotate in a linked manner, but also rotate simultaneously, and can also rotate in groups in a linked manner.

[0010] 2. This structure adopts a completely mechanical structure, and is simple in structure, short in stroke, and fast in action, so as to achieve rapid water spraying.

[0011] 3. This device can spray water quickly, continuously, and in a coordinated manner. As long as there are enough automatic rotating devices, it can achieve continuous water spraying for a long time.

[0012] 4. This device can extinguish gas and coal dust explosion flames and create a large-scale, long-term explosion isolation zone in the roadway to prevent the explosion from spreading and causing secondary explosions.

[0013] 5. This device has no pressure vessel or electrical control device, ensuring reliable operation. Furthermore, it is easy to install and maintain, and has low cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the initial state structure when the action is linked or simultaneous, as shown in Example 1. Figure 3 This is a schematic diagram of the water spraying process in the linked state of Example 1; Figure 4 This is a schematic diagram of the water spraying process during simultaneous operation in Example 2; Figure 5 for Figure 2 Enlarged structural diagram at point II; Figure 6 for Figure 1 A magnified structural diagram of point I in the middle.

[0015] Explanation of the serial numbers in the diagram: 1 is a fixed frame, 2 is an explosion-proof water bag, 3 is a flipping frame, 4 is a fixed hook, 5 is a trigger plate, 6 is a rotating shaft, 7 is a detachable hook, 8 is a limit locking pin, 9 is a locking hole, 10 is a limit hole, 11 is a tension spring, 12 is a linkage hole, 13 is a linkage pin, 14 is a limit plate, 15 is a trigger plate slot, 16 is a bolt hole, 17 is a trigger plate fixing bolt, 18 is an overlapping arm, 19 is a release groove, and 20 is a bearing seat. Detailed Implementation

[0016] Reference Appendix Figure 1-6An automatic flipping explosion-proof device includes a fixed frame 1 fixed to the roof of a roadway by anchor bolts, etc., multiple sets of rotating shafts 6 are rotatably arranged on the fixed frame 1 via bearing seats 20, multiple sets of flipping frames 3 are rotatably / fixed on the rotating shafts, and explosion-proof water bags 2 are suspended on the flipping frames 3. The flipping frame 3 is a rectangular frame structure. Its rear (with the direction of the shock wave as the front and the direction of its departure as the rear) is connected to the fixed frame 1 (bearing seat) via a rotating shaft 6. The two sides of the flipping frame 3 extend forward and are provided with overlapping arms 18. The front end of the overlapping arms 18 is triangular and the tip overlaps with the front rotating shaft 6. The rotating shaft 6 is provided with a release groove 19 that cooperates with the overlapping arms 18. When the release groove 19 faces the overlapping arms 18, the overlapping arms 18 will no longer overlap with the rotating shaft and will rotate and fall to achieve the release effect. It also includes a trigger plate 5, which is movably set on the rotating shaft 6.

[0017] Preferably, limit plates 14 are fixedly installed at both ends of the rotating shaft 6 near the inner side of the fixed frame 1; the limit plates 14 are circular plates with arc-shaped limit holes 10 and circular locking holes 9; the fixed frame 1 has pin holes corresponding to the limit holes 10 and locking holes 9 respectively; the limit locking pins 8 pass through the limit holes 10 or locking holes 9 and cooperate with the pin holes on the fixed frame 1 to play the role of limiting or locking. It also includes a tension spring 11, the two ends of which are connected to the fixing frame 1 and the limiting plate 14, respectively. Specifically, hooks that cooperate with the tension spring 11 are provided on the fixing frame 1 and the limiting plate 14, respectively. The tension of the tension spring 11 keeps the limiting plate 14 in its initial position and can also prevent accidental triggering caused by small external forces.

[0018] Preferably, the rotating shaft is provided with a trigger plate slot 15 that mates with the trigger plate 5 and bolt holes 16 for fixing the trigger plate 5. The insertion part of the trigger plate is also provided with corresponding bolt holes, and after insertion, it is further fixed by the trigger plate fixing bolts 17.

[0019] Preferably, the explosion-proof water bag 2 is connected to the tilting frame 3 via a fixed hook 4 at the rear and a detachable hook 7 at the front. The fixed hook 4 is always kept suspended, such as by a locking ring; the detachable hook 7 is a short straight hook (set horizontally or slightly upwardly), which can ensure effective suspension in the initial state and can be quickly detached after tilting.

[0020] Preferably, a rotating sleeve is fixed to the rear of the tilting frame 3, and the rotating sleeve is rotatably engaged with the rotating shaft 6; a linkage hole 12 is provided on the rotating sleeve and the rotating shaft 6 respectively, and the linkage hole 12 is engaged by a linkage pin 13. After the linkage pin 13 is inserted, the rotating sleeve and the rotating shaft rotate coaxially.

[0021] The following examples further illustrate this solution.

[0022] Example 1: An automatic flipping explosion-proof device includes a fixed frame 1 fixed to the roof of a roadway. The fixed frame is arranged in multiple rows in the width direction of the roadway. Each row of fixed frames is equipped with 20 flipping frames 3. The rear of the flipping frame is connected to the fixed frame via a rotating shaft 6. The front of the flipping frame extends with an overlapping arm 18, which overlaps with the front rotating shaft. A release groove 19 is provided on the rotating shaft at the point where the overlapping arm and the rotating shaft meet. An explosion-proof water bag 2 is suspended on the flipping frame. The device also includes a trigger plate 5, which is inserted into the first front rotating shaft and fixed with bolts.

[0023] In this embodiment, during installation, the limiting locking pin is inserted into the two locking holes to lock the rotating shaft to the fixed frame, preventing accidental triggering during installation or maintenance. After the structure is installed, the limiting locking pin is pulled out from the locking hole and inserted into the limiting hole, allowing the rotating shaft to rotate within a limited range; simultaneously, the linkage pins on the remaining rotating shafts are inserted, causing the current stage tilting frame to rotate coaxially (i.e., linked) with the next stage rotating shaft.

[0024] The structure and function of each component in this scheme are as follows.

[0025] The fixing frame 1 is used to fix this device. It is a rectangular frame, which is fixed to the roof of the roadway by anchor bolts, etc., and has a rotating shaft in the middle that is rotatably installed at intervals by bearing seats.

[0026] The tilting frame is used to suspend explosion-proof water bags filled with water and tilt them to spray water upon triggering. The main body is a rectangular frame, with the rear using a linkage pin to control whether it rotates on the same axis. The front uses an overlapping arm and a release groove to achieve a limit / release engagement with the previous rotating shaft. The tilting frame is equipped with hooks for suspending the explosion-proof water bags. The rear hooks are anti-drop type, such as curved hooks, which engage with the reinforced lifting holes on the explosion-proof water bags. The front hooks are detachable, for example, a short straight hook can be selected at a slightly upward angle, ensuring both proper hanging in the normal state and smooth and quick detachment after tilting.

[0027] The trigger plate is made of rigid material and has multiple insertion parts (with bolt holes) on its upper part. It fits tightly with the slots on the rotating shaft and is further secured by trigger plate fixing bolts. The working surface of the trigger plate faces the direction of the shock wave, receives the shock wave, and drives the rotating shaft to rotate.

[0028] The release groove on the rotating shaft initially faces downwards, with the non-grooved part of the shaft contacting the front end of the tilting frame for fixed support. Upon triggering, the release groove on the rotating shaft faces the overlapping arm, ensuring its free fall and achieving the release function. While meeting strength requirements, the release groove should be as deep as possible to protect the release effect. Typically, the depth of the release groove is between half a circle and two-thirds of a circle.

[0029] The linkage hole engages with the linkage pin to control whether the current stage tilting frame and the subsequent stage rotating shaft rotate coaxially (i.e., linkage), which in turn, in conjunction with the trigger plate, controls the triggering mode of the tilting frame. Linkage can be selected as needed.

[0030] The limiting hole is an arc-shaped hole that mates with the limiting pin and, in conjunction with the tension spring, determines the initial angle position of the rotating shaft and its maximum angle position after triggering, ensuring effective release from the release groove. The limiting hole effectively controls the rotation angle of the rotating shaft, preventing excessive rotation from affecting the descent of the overlapping arm. On rotating shafts equipped with trigger plates, the trigger plate experiences significant force due to the shock wave; therefore, a limiting pin must be inserted into the corresponding limiting hole during operation. However, the operation of the limiting hole affects the rotation angle of the rotating shaft, potentially impacting the water bag's spraying effect (or causing incomplete spraying). Furthermore, the linked rotating shaft takes a certain amount of time to descend, which is sufficient to ensure the subsequent tilting frame can operate in conjunction. Therefore, on rotating shafts without trigger plates, the limiting hole remains unused.

[0031] The locking hole is a hole of equal diameter drilled on the bearing seat of the fixed frame and the limiting plate of the rotating shaft. The upper limit locking pin is inserted to realize the locking function and will not be triggered, so as to facilitate maintenance and construction.

[0032] The working process of this embodiment is as follows: When the shock wave arrives, it will first impact the trigger plate, causing the trigger plate to rotate under force, which in turn drives the corresponding rotating shaft to rotate. Under the action of the shock wave, the rotating shaft will rotate from the initial state to the maximum angle (limited by the limiting hole), i.e., the release state. At this time, the release groove corresponds to the overlapping arm behind it, causing the rotating shaft to no longer support the overlapping arm. The overlapping arm falls down, causing the flipping frame to flip. During this process, the front of the explosion-proof water bag is separated from the detachable hook, and the water in the explosion-proof water bag is sprayed out. At the same time, the flipping of the flipping frame will drive the rotating shaft connected to it to rotate, which in turn drives the next flipping frame behind it to flip, forming a linkage water spraying and continuous water spraying.

[0033] Example 2: Referring to Example 1, the difference is that a trigger plate is provided below each rotating shaft. The linkage pins on all rotating shafts are pulled out, and the limit locking pins are inserted into the limit holes.

[0034] In this embodiment, when the shock wave arrives, due to its extremely high speed, it is equivalent to acting on the trigger plate simultaneously, causing all the explosion-proof water bags to trigger water spraying at the same time, forming a relatively thick water spraying zone, which can quickly spray water and achieve a good effect in a short time.

[0035] Example 3: Referring to Example 1, the difference is that there are multiple trigger plates, spaced apart. For example, there are 10 plates arranged at equal intervals.

[0036] In this embodiment, when the shock wave arrives, it will act on each trigger plate simultaneously, and each trigger plate will then drive the water bags behind to spray water, forming multiple areas of coordinated spraying and multiple tiered isolation zones.

[0037] With the number and volume of water bags remaining constant, the more trigger plates there are, the greater the density of the water isolation strip; the fewer trigger plates there are, the longer the water isolation strip lasts.

[0038] In summary, this utility model's structure, through the setting of the trigger plate, can achieve linked flipping operation, simultaneous flipping, and group linked flipping. This structure adopts a completely mechanical structure, which is simple, has a short stroke, and fast action, achieving rapid water spraying. This device can spray water quickly, continuously, and in a linked manner; as long as there are enough automatic flipping devices, it can achieve long-term continuous water spraying. This device can extinguish gas and coal dust explosion flames and create a large-scale, long-lasting explosion isolation zone in the roadway, preventing the explosion from spreading and causing secondary explosions. This device has no pressure vessel, no electrical control device, and is reliable in operation. Furthermore, it is easy to install and maintain, and has low cost.

Claims

1. An automatic flipping explosion-proof device, characterized in that: It includes a fixed frame (1) fixed to the top of the roadway, multiple sets of tilting frames (3) are installed on the fixed frame (1), and explosion-proof water bags (2) are suspended on the tilting frames (3). The rear of the flipping frame (3) is connected to the fixed frame (1) via a pivot (6). An overlapping arm (18) is provided at the front of the flipping frame (3), and the overlapping arm (18) is connected to the pivot (6) at the front. A release groove (19) is provided on the pivot (6) to cooperate with the overlapping arm (18). It also includes a trigger plate (5), which is fixedly installed on the pivot (6).

2. The automatic flipping explosion-proof device according to claim 1, characterized in that: Limiting plates (14) are fixedly installed at both ends of the rotating shaft (6) near the inner side of the fixed frame (1); the limiting plate (14) is provided with an arc-shaped limiting hole (10) and a circular locking hole (9); the fixed frame (1) is provided with pin holes corresponding to the limiting hole (10) and the locking hole (9); the limiting locking pin (8) passes through the limiting hole (10) or the locking hole (9) and cooperates with the pin hole on the fixed frame (1); It also includes a tension spring (11), the two ends of which are connected to the fixing frame (1) and the limiting plate (14) respectively.

3. The automatic flipping explosion-proof device according to claim 1, characterized in that: The rotating shaft is provided with a trigger plate slot (15) that mates with the trigger plate (5) and bolt holes for fixing the trigger plate (5).

4. The automatic flipping explosion-proof device according to claim 1, characterized in that: The explosion-proof water bag (2) is connected to the flipping frame (3) at the rear by a fixed hook (4), and to the flipping frame (3) at the front by a detachable hook (7).

5. The automatic flipping explosion-proof device according to claim 1, characterized in that: The rear of the flipping frame (3) is fixed with a rotating sleeve, which is rotatably engaged with the rotating shaft (6); the rotating sleeve and the rotating shaft (6) are respectively provided with connecting holes (12), and the two connecting holes (12) are engaged by connecting pins (13).

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