JP7051092B2 - Fire extinguishing simulated experience device - Google Patents

Description

The present invention relates to a device for simulating a fire extinguishing activity using a fire hose.

Generally, it is known that a fire extinguishing nozzle attached to the tip of a fire hose is provided with a mechanism for adjusting the water discharge flow rate and a mechanism for switching the water discharge form to straight or spray.

A fire brigade member holds a fire extinguishing nozzle connected to the tip of a fire hose by hand to extinguish a fire, but since high-pressure water is discharged from the fire extinguishing nozzle, the reaction of the water discharge is received through the fire extinguishing nozzle. The magnitude of the reaction changes by switching the discharge flow rate or the discharge form.

Conventionally, a device has been proposed that allows a simulated experience of the recoil received by a fire extinguishing nozzle due to water discharge (for example, Patent Document 1 and the like). This device is equipped with a flexible fire hose to which a fire extinguishing nozzle is connected, a hose reel around which the fire hose is wound, a servo motor connected to the shaft of the hose reel, and a water discharge flow rate and water discharge rate provided in the fire extinguishing nozzle. It is equipped with a detector that detects the simulated operation state when the water discharge state (spray, straight, etc.) is switched in a pseudo manner, and detects the torque for winding the fire hose around the hose reel from the detector. By determining based on the signal and applying the determined torque to the hose reel, the reaction received by the fire extinguishing nozzle can be simulated.

International release WO2016 / 131110A1 pamphlet

However, the above-mentioned conventional fire extinguishing simulated experience device can apply torque in the winding direction of the fire hose to simulate the reaction at the time of water discharge, but when the hose is taken by the hose reel, the hose is originally used. You need to manually pull it out to the length.

Further, in the above-mentioned conventional fire extinguishing simulated experience device, a specified torque may be suddenly applied by the motor drive at the start of torque application, which may be dangerous.

Therefore, according to the present invention, the reaction to the fire extinguishing nozzle received when the fire hose is discharged can be safely simulated, and even if the hose is pulled and moves from the original position, the fire hose is automatically returned to the original position. The main purpose is to provide a fire extinguishing simulated experience device that can be returned to the position.

In order to achieve the above object, the fire extinguishing suspicion experience device according to the present invention is provided with a hose having a round cross section and bending resistance, a hose connected to one end of the hose, and a water discharge device provided in the hose. A flow rate switching mechanism that pseudo-switches the flow rate, a pseudo flow rate detector that detects the switching position of the flow rate switching mechanism, and a pneumatic cylinder that applies a tensile force to the other end of the hose in a direction away from the original position. , The elastic member that elastically biases the other end of the hose in the direction of returning to the original position, and the predetermined air pressure corresponding to the switching position of the flow rate switching mechanism according to the detection signal of the pseudo flow rate detector. It is characterized by including a pneumatic circuit for controlling the operating pneumatic pressure of the pneumatic cylinder.

The elastic member is preferably a rubber cord, a coil spring, a constant load spring, or a spiral spring connected to the other end of the hose.

The pneumatic circuit is a predetermined parallel circuit connected between the pneumatic cylinder and the pneumatic source, and a predetermined position corresponding to each of a plurality of switching positions of the flow switching mechanism provided in each circuit of the parallel circuit. A regulator set to the air pressure of the above and a solenoid valve provided in each of the parallel circuits and operated in response to the detection signal of the pseudo flow detector, and a regulator corresponding to the switching position of the flow switching mechanism is provided. It is preferable to open and close the solenoid valve so as to supply working air pressure to the pneumatic cylinder via the air pressure cylinder.

It is preferable to further include four guide rolls which are arranged on all sides so as to surround the hose and guide the movement of the hose in the length direction.

According to the fire extinguishing simulated experience device according to the present invention, when the discharge water flow rate is pseudo-switched by the flow rate switching mechanism, the pseudo flow rate detector detects the switching position, and the air pressure is pneumatic according to the switching position corresponding to the simulated flow rate. By operating the cylinder, you can experience a simulated reaction force according to the water discharge flow rate, and even if the hose moves from the original position due to being pulled by the pneumatic cylinder, if the water discharge flow rate is set to the stop position, the air pressure will respond to the water discharge stop. By reducing the working pressure of the cylinder, the elastic member can automatically return the hose to its original position without bending. The pneumatic cylinder is buffered because it operates on a compressible fluid, and the tensile force is small until it moves to the specified stroke, which enables a safer simulated experience.

FIG. 1 is a side view showing an embodiment of a fire extinguishing simulated experience device according to the present invention. FIG. 2 is a partial cross-sectional front view of the fire extinguishing simulated experience device of FIG. FIG. 3 is a vertical sectional side view showing the fire extinguishing simulated experience device of FIG. 1 with a part omitted. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 5 is a cross-sectional view of the nozzle of the fire extinguishing simulated experience device of FIG. FIG. 6 is a pneumatic circuit diagram of the fire extinguishing simulated experience device of FIG.

An embodiment of the fire extinguishing simulated experience device according to the present invention will be described below with reference to FIGS. 1 to 6.

The fire extinguishing simulated experience device 1 has a hose 2 having a round cross section and bending resistance, a nozzle 3 connected to one end of the hose 2, and a flow rate switching provided on the hose 3 to pseudo-switch the amount of water discharged. Pneumatic pressure that exerts a tensile force on the mechanism 4 (FIG. 5), the pseudo flow rate detector 5 (FIG. 5) that detects the switching position of the flow rate switching mechanism 4, and the other end 2a of the hose 2 in the direction away from the in-situ position X. A predetermined cylinder 6, an elastic member 7 that elastically biases the other end of the hose 2 in the direction of returning to the original position X, and a predetermined position corresponding to the switching position of the flow rate switching mechanism according to the detection signal of the pseudo flow rate detector. The pneumatic circuit 19 (FIG. 6) for controlling the operating pneumatic pressure of the pneumatic cylinder is provided as the pneumatic pressure.

In the illustrated example, the fire extinguishing simulated experience device 1 includes a casing 8. The pneumatic cylinder 6 is mounted in the casing 8 in the vertical direction. An opening 8a through which the hose 2 is inserted is formed below the entire surface of the casing 8. Inside the opening 8a of the casing 8, guide rolls 9 ... Arranged in all directions so as to surround the hose 2 and guide the movement of the hose 2 in the length direction are rotatably supported. The rope 10 connected to the other end 2a of the hose 2 is connected to the inner bottom portion 13 of the casing 8 via the fixed pulley 11 and the moving pulley 12. The piston rod 6a of the pneumatic cylinder 6 is connected to the moving pulley 12. The elastic member 7 is formed of a constant load spring supported by a bracket 14 fixed to the casing 8, and the free end of the constant load spring is connected to the other end 2a of the hose 2. The elastic member 7 is not limited to a constant load spring, and may be formed by, for example, a rubber cord, a coil spring, or another spiral spring.

As the hose 2, a shape-retaining hose that maintains a round cross-section and has bending resistance can be preferably used. The shape-retaining hose uses synthetic fibers or the like for the warp threads and a highly rigid monofilament for the weft threads, so that the cross section of the hose is always kept circular and it is difficult for the hose to bend. By using such a shape-retaining hose, the hose 2 does not bend when the hose 2 is returned to the original position by the elastic member 7. When the hose 2 is bent, it becomes impossible to apply a tensile force to the hose 2 to give a pseudo reaction to the nozzle.

The hose 2 may be a hose having a round cross section and bending resistance, and is not limited to a so-called shape-retaining hose. Since the hose 2 used in the present invention does not allow water to pass through, it is possible to use a hose that maintains a round cross-section and has bending resistance by inserting a reinforcing material inside the hose that is easy to fold. can. Flat hoses, which are generally used as a type of fire hose, have a tubular lining on the inner surface of a woven cloth (jacket) that is folded into a tubular shape by a circular weaving machine or a plain weaving machine using threads such as cotton and synthetic fibers. (Liner: rubber, synthetic resin, etc.) is a hose attached with an adhesive or the like and has a flat shape and is easily bent. Therefore, it cannot be used as it is in the present invention. By inserting a hose, the hose 2 can be used in the present invention by maintaining a round cross-sectional shape and providing bending resistance.

In the illustrated example, as shown in FIG. 4, two hoses 2 and 2 and two pneumatic cylinders 6 and 6 connected to the hoses 2 and 2 are provided. The two hoses 2 and 2 have different diameters, and you can have a simulated fire extinguishing experience with the hoses 2 and 2 of different thicknesses.

As shown in FIG. 5, the flow rate switching mechanism 4 of the nozzle 3 can be a switching mechanism similar to that generally provided in a fire extinguishing nozzle, and is provided on the outer periphery of the nozzle and has a rotatable ring shape. It has become. The spray switching mechanism generally provided in the fire extinguishing nozzle is operated when switching the spray state such as the spray diffusion angle. The flow rate switching mechanism generally provided in the fire extinguishing nozzle is operated when switching the amount of water discharged. The flow rate switching mechanism 4 of the illustrated example can be switched to four stages of large flow rate, medium flow rate, small flow rate, and water discharge stop.

In the illustrated example, the pseudo flow rate detector 5 is composed of a rotary switch built in the nozzle. The pseudo flow rate detector 5 has four contacts depending on the switching position (large flow rate, medium flow rate, small flow rate, stop) of the flow rate switching mechanism 4.

With reference to the pneumatic circuit diagram of FIG. 6, the working pressure air is supplied to the rod chamber 6b of the pneumatic cylinder 6 from the pneumatic source 15 such as a compressor or a compressed air cylinder. As the pneumatic cylinder 6, a single-acting cylinder can be preferably used.

The pneumatic circuit 19 that controls the pneumatic cylinder 6 is provided with three parallel circuits 20, 21, and 22, and each of the parallel circuits 20, 21, and 22 has normally closed type solenoid valves 24, 25, and 26, respectively. It is intervening. The solenoid valves 24, 25, and 26 are connected to the contact terminals 5a, 5b, and 5c of the pseudo flow rate detector 5 corresponding to the positions of the large flow rate, the medium flow rate, and the small flow rate of the flow rate switching mechanism 4, respectively. ing. A conductor (not shown) connected to each contact terminal of the pseudo flow rate detector 5 can pass through the hose 2. In each of the parallel circuits 20, 21 and 22, regulators 27, 28 and 29 for adjusting the pressure to the set pressure according to the switching flow rate of the flow rate switching mechanism 4 are further provided with the solenoid valves 24, 25 and 26. They are connected in series. In the illustrated example, the set pressure of the regulator 27 is set to 0.1 MPa, the set pressure of the regulator 28 is set to 0.2 MPa, and the set pressure of the regulator 29 is set to 0.3 MPa, which are small flow rate, medium flow rate, and large flow rate, respectively. It corresponds to the switching position.

The pneumatic circuit 19 further includes an exhaust passage 30 for exhausting the rod chamber 6b and lowering the piston rod 6a, and a normally closed type solenoid valve 31 is connected to the exhaust passage 30. The solenoid valve 31 is connected to the contact terminal 5d at the water discharge stop position of the pseudo flow rate detector 5 by a conducting wire.

Further, the pneumatic circuit 19 includes a safety circuit 33 including a relief valve 32 that exhausts the compressed air inside the rod chamber 6b when the internal pressure of the rod chamber 6b exceeds a predetermined pressure (0.3 MPa in the illustrated example). ing.

According to the fire extinguishing simulated experience device having the pneumatic circuit 19 as described above, the fire extinguishing simulated experience person M holds the nozzle 3 by hand, switches the flow rate switching mechanism 4 of the nozzle 3 from the water discharge stop position, and operates the desired flow rate. When the position, for example, the position of the large flow rate is switched, the pseudo flow rate detector 5 opens the electromagnetic valve 26 according to the switching position, and the compressed air having the set pressure (0.3 MPa in the illustrated example) corresponding to the switching position is released into the rod chamber 6b. Is supplied to. As a result, the piston 6c is pushed, and the piston rod 6a applies a tensile force to the hose 2 via the rope 10. At this time, when the hose 2 is pulled and pulled into the casing 8, the hose 2 is pulled by a distance corresponding to twice the ascending distance of the piston rod 6a via the moving pulley 12. Further, at this time, the elastic member 7 is shown by a virtual line in FIG. 3 by the length that the hose 2 is pulled and the other end 2a of the hose 2 moves away from the original position (position X in FIG. 3). Elastically extends. After the simulated experience is completed, when the flow rate switching mechanism 4 is returned to the stop position, the solenoid valve 26 is closed, the solenoid valve 31 of the exhaust passage 30 is opened, the elastic member 7 is contracted, and the hose 2 is returned to the original position. When the hose 2 returns to its original position, the hose 2 can return along the length direction of the hose 2 due to its bending resistance, so that the simulated experience can be resumed immediately. Further, since the guide roll 9 is provided, the hose 2 can move smoothly and does not get caught in the opening 8a.

The fire extinguishing simulated experience device 1 can include a computer 35 that receives a signal from the simulated flow rate detector 5 and a head-mounted display 36 connected to the computer 35. The signal from the pseudo flow detector 5 is sent to the computer 35, the signal related to the flow switching position received by the computer 35 is arithmetically processed by a predetermined program, and the fire extinguishing simulated experience person according to the switching state of the pseudo flow detector 5. It is also possible to configure the head-mounted display 36 to display a virtual reality image of M performing a pseudo-fire extinguishing activity while changing the amount of water discharged.

As shown in FIG. 5, the nozzle 3 further includes a spray switching mechanism 40 similar to that generally provided in a fire extinguishing nozzle. The spray switching mechanism 40 generally provided in the fire extinguishing nozzle has a ring shape and is rotated when switching the spray diffusion angle. The nozzle 3 of the present invention has a spray state detector 41 built in the nozzle for detecting the switching position of the spray switching mechanism 40. In the illustrated example, the spray state detector 41 uses a 4-contact rotary switch. A state in which the switching position of the spray switching mechanism 40 is detected by the spray state detector 41, the computer 35 calculates and processes the signal regarding the switching position of the spray state detector 41 with a predetermined program, and the spray state from the nozzle 3 is switched. Can be configured to be displayed on the head-mounted display 36 worn by the fire extinguishing simulated experiencer M as a virtual reality image.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the pneumatic circuit of the illustrated example, a circuit that switches the supply pressure to the rod chamber by a combination of a regulator and a solenoid valve is used, but instead, a pneumatic circuit using an electropneumatic regulator can be used.

1 Fire extinguishing simulated experience device 2 Hose 2a Other end 3 Nozzle 4 Flow switching mechanism 5 Pseudo flow detector 6 Pneumatic cylinder 7 Elastic member 8 Casing 9 Guide roll 19 Pneumatic circuit 20-22 Parallel circuit 24 Solenoid valve 25 Solenoid valve 26 Solenoid valve 27 Regulator 28 Regulator 29 Regulator 31 Solenoid valve X In-situ

Claims (4)

A hose that maintains a round cross-section and has bending resistance,
A nozzle connected to one end of the hose and
A flow rate switching mechanism provided on the nozzle to switch the water discharge flow rate in a pseudo manner,
A pseudo flow rate detector that detects the switching position of the flow rate switching mechanism, and
A pneumatic cylinder for applying a tensile force to the other end of the hose in a direction away from the original position.
An elastic member that elastically biases the other end of the hose in the direction of returning it to its original position.
A pneumatic circuit that controls the operating air pressure of the pneumatic cylinder to a predetermined air pressure corresponding to the switching position of the flow rate switching mechanism according to the detection signal of the pseudo flow rate detector.
A fire extinguishing simulated experience device characterized by being equipped with. The fire extinguishing simulated experience device according to claim 1, wherein the elastic member is a rubber string, a coil spring, a constant load spring, or a spiral spring connected to the end of the hose. The pneumatic circuit is a predetermined parallel circuit connected between the pneumatic cylinder and the pneumatic source, and a predetermined position corresponding to each of a plurality of switching positions of the flow switching mechanism provided in each circuit of the parallel circuit. A regulator set to the air pressure of the above and a solenoid valve provided in each of the parallel circuits and operated in response to the detection signal of the pseudo flow detector, and a regulator corresponding to the switching position of the flow switching mechanism is provided. The fire extinguishing simulation experience device according to claim 1, wherein the solenoid valve is opened and closed so as to supply operating air pressure to the pneumatic cylinder. The fire extinguishing simulation experience device according to claim 1, further comprising four guide rolls that are arranged on all sides so as to surround the hose and guide the movement of the hose in the length direction.

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