JP6731882B2 - Fire truck - Google Patents

Description

The present invention relates to a vehicle automatic liquid absorption mechanism used when a foam fire extinguishing agent is replenished, and a fire engine equipped with the vehicle automatic liquid absorption mechanism.

Conventionally, the large-scale chemical high-altitude water discharge vehicle 101 shown in FIG. 1 extinguishes fire from a high altitude by discharging water for extinguishing water from the tower bubble nozzle 115 when performing fire-extinguishing activities at a fire site, a disaster prevention training site, or the like. Specifically, as shown in the schematic diagram of FIG. 2, the water pump 140 is driven by the power taken out from the engine 120 via PTO (Power take-off) 124, 125, so that the fire extinguishing water is generated. Water is absorbed and discharged from a water source, passes through various water channel pipes, and is discharged from a tower bubble nozzle 115 attached to the tip of the water discharge tower 113 in FIG. Further, when foam is emitted, the foam extinguishing agent is sucked from the foam undiluted solution tank 108 by the foam undiluted solution pump 144 in FIG. 2, and the foam extinguishing agent is press-fitted at a constant ratio to the water discharge amount of the fire extinguishing water discharged from the water pump 140, The mixture is mixed and the bubbles are emitted from the tower bubble nozzle 115.

The mixing method of the foam extinguishing agent is a flow rate adjusting method of a pressure feeding automatic proportional method. As described with reference to the piping system diagram, as shown in FIG. 3, in this method, the foam extinguishing agent is sucked from the foam undiluted solution tank 108 by the foam undiluted solution pump 144, and the discharged foam extinguishing agent is used as the extinguishing water. The flow rate of the foam extinguishing agent is adjusted by the opening degree of the foam extinguishing agent flow rate adjusting valve 167 so that the flow rate of the foam extinguishing agent is adjusted to a constant rate by the foam undiluted solution flowmeter 151 so as to be pressed into the water discharge amount at a fixed rate. The method of press-fitting and mixing the foam extinguishing agent into the fire extinguishing water channel is a flow rate adjusting method of a pressure-feeding automatic proportional system.

The foam extinguishing agent path from the foam concentrate tank 108 to the foam concentrate inlet port 146 of the fire extinguishing water channel is located in the middle of the foam concentrate pump suction side piping path 160 from the foam concentrate tank 108 to the foam concentrate pump 144, and is connected to the tank suction source valve. 169, a tank liquid suction valve 173, a foam liquid strainer 170, and the like are provided. Further, a foam stock solution flow meter 151, a flow rate adjusting valve 167, a mixing valve 174, and a check valve 166 are provided in the foam stock solution pump discharge side piping path 161 from the foam stock solution pump 144 to the foam stock solution pressure inlet 146.

When the large chemical high-altitude water spray vehicle 101 emits bubbles for a long time to extinguish a fire, it is necessary to replenish the foam stock solution tank 108 of the large chemical high-altitude water spray vehicle 101 with a foam extinguishing agent. According to the Ministerial Ordinance (hereinafter referred to as “Ministerial Ordinance”) regarding specific disaster prevention facilities and disaster prevention organizations in petroleum complexes, etc., the capacity of the foam stock solution tank 108 of the large chemical aerial water discharge vehicle 101 is specified to be 1800 liters or more. There is. Considering the capacity of the foam concentrate tank 108, if the large chemical high-altitude water spray vehicle 101 radiates bubbles of 3000 liters per minute at a mixing ratio of 3%, the foam concentrate tank 108 becomes empty in 20 minutes. Therefore, it is necessary to replenish the foam extinguishing agent at any time, and the replenishing vehicle 180 shown in FIGS. 1 and 4 is used for the replenishment. According to a ministerial ordinance, this foam concentrate delivery vehicle 180 has a foam concentrate tank 181 having a capacity of 4000 liters or more, and is provided with a foam concentrate feed pump 132 capable of pumping a predetermined amount of foam extinguishing agent. Is required.

In the conventional foam extinguishing agent replenishment method, the foam extinguishing agent is replenished to the foam undiluted solution tank 108 of the large-scale chemical height watering vehicle 101 using the automatic liquid delivery system which is a function of the foam undiluted solution carrier 180. In this automatic liquid delivery system, in order to reduce the burden on the disaster prevention personnel, as shown in FIG. 1, the large chemical high-altitude water discharge vehicle 101 and the foam liquid carrier 180 are connected by an electric signal cable, and The foam stock solution tank loading port 109 of the large-scale chemical aerial vehicle 101 and the foam stock solution discharge port 185 of the foam stock solution transport vehicle 180 are connected by the solution sending hose 183, and the foam stock solution sending pump 132 is driven to create the foam. Preparations for sending extinguishing agent are complete. When the amount of the foam extinguishing agent remaining in the foam concentrate solution tank 108 of the large-scale chemical aerial vehicle 101 becomes less than 1/4 during foam emission, the foam concentrate transport vehicle 180 raises the rotation of the foam concentrate feed pump 132 to generate bubbles. The valve of the stock solution discharge port 185 is opened and the foam extinguishing agent of the foam stock solution carrier 180 is sent to the foam stock solution tank 108 of the large-scale chemical height watering truck 101. Further, when the foam stock solution tank 108 of the large-scale chemical high-altitude water discharge vehicle 101 is filled with the foam extinguishing agent, the valve of the foam stock solution discharge port 185 is closed, and the rotation of the foam stock solution delivery pump 132 returns to idling and stands by. The valve of the foam concentrate discharge port 185 of the foam concentrate transport vehicle 180 is an electric type or an air type in order to automatically open and close.

By the way, the water pump 140 and the like of the large-scale chemical aerial water discharge vehicle 101 are driven by the power extracted from the engine via the PTO, as described in Patent Document 1 below, for example. As shown in FIG. 2, two PTOs are prepared for the large-scale chassis dedicated to fire fighting. The first is a full power PTO 124 for taking out the first power for driving the water pump 140, and the second is a transmission side PTO 125 for taking out the second power for driving the hydraulic pump 141 and the like. According to one of the power extraction methods using these PTOs 124 and 125, as shown in FIG. 2A, the water pump 140 is driven by the power extracted from the full power PTO 124, while the transmission is transmitted. The split transmission 126 is mounted in the middle of the power taken out from the side PTO 125, and the power is distributed to drive the hydraulic pump 141 and the foam liquid concentrate pump 144. According to another method, as shown in FIG. 2B, the water pump 140 is driven by the power extracted from the full power PTO 124, while the hydraulic pump is driven by the power extracted from the transmission side PTO 125. The foam stock solution pump 144 is driven by an oil motor 143 driven by the hydraulic pump 141.

JP, 2014-233470, A

However, the conventional foam extinguishing agent replenishing method described above has the following problems. (1) When replenishing the foam extinguishing agent, a pump capable of pumping a predetermined amount of the foam extinguishing agent is required in order to be recognized as a vehicle for transporting the foam extinguishing agent specified by the Ministerial Ordinance. That is, since the foam liquid carrier is regulated by the Ministerial Ordinance, the vehicle cannot be arbitrarily selected. In addition, it is necessary to meet a predetermined number of disaster prevention personnel during the replenishment work. (2) Although there are automatic liquid feed and manual liquid feed methods for foam extinguishing agents using a foam concentrate delivery vehicle, the types of foam concentrate delivery vehicles differ depending on the delivery method, so replenishment is required for each foam concentrate delivery vehicle. The work is different and the replenishment work is complicated. (3) In automatic liquid transfer from the foam concentrate delivery vehicle, in order to monitor the remaining amount of foam extinguishing agent in the foam concentrate solution tank, a large chemical high-altitude sprinkler vehicle and the foam concentrate carrier must be connected by an electric signal cable. It doesn't happen. In addition, the standards may differ depending on the manufacturer of the foam concentrate delivery vehicle, and automatic delivery may not be possible.

(4) Due to the above, it is preferable that the foam fire extinguishing agent be absorbed by the large chemical aerial water spray vehicle, but the foam extinguishing agent should be sent from the foam liquid carrier and the large chemical aerial water spray vehicle should absorb the liquid. I can't. That is, there is no pump for absorbing the foam extinguishing agent during foam emission in the large chemical aerial vehicle. A large chemical aerial vehicle is equipped with a foam concentrate pump for press-fitting the foam extinguishing agent and mixing it with the water for extinguishing the fire, but is equipped with a pump for absorbing the foam extinguishing agent during foam emission. Absent. If the foam concentrate pump is used for absorbing the foam extinguishing agent, it is impossible to mix the foam extinguishing agent with the water for extinguishing the foam. That is, the foam concentrate pump can be used for either mixing with the fire-extinguishing water or replenishing the foam extinguishing agent, but cannot both mix with the fire-extinguishing water and replenish the foam extinguishing agent at the same time. Although it is sufficient to add a pump and use a pump for each application, there are two powers that can be taken out from the engine. Each power source drives a water pump for fire extinguishing water and a hydraulic pump for a water spray tower. The power to drive the pump cannot be secured, and it is difficult to add another pump.

The present invention has been proposed in view of such circumstances. That is, it is an object of the present invention to provide an automatic liquid absorbing mechanism for a vehicle and a fire engine capable of simultaneously mixing the fire extinguishing water and the foam extinguishing agent and replenishing the foam extinguishing agent. In addition, regardless of the ministerial ordinance, any vehicle can be selected, which can reduce the number of disaster prevention personnel and realize simple refilling work. The purpose is to provide a car.

In order to achieve the above object, an automatic liquid absorbing mechanism for a vehicle according to the present invention uses a power take-out mechanism that takes out power from a drive source that drives the vehicle, and a power taken out from the power take-out mechanism from outside the vehicle. A liquid absorption pump for absorbing the foam extinguishing agent, and a mixing pump for mixing the foam extinguishing agent and the water for extinguishing water by the power taken out from the power take-out mechanism are provided.

In the automatic liquid absorption mechanism for a vehicle according to the present invention, the power take-out mechanism is a full power PTO, and a water pump for sending fire extinguishing water by the first power taken from the drive source via the full power PTO. And a hydraulic motor for generating secondary power for driving the mixing pump by the fire extinguishing water sent by the water pump.

In the automatic liquid absorbing mechanism for a vehicle according to the present invention, the power take-out mechanism is a side PTO, and the fire extinguishing apparatus is operated by the second power taken out from the drive source via the side PTO. A pump is provided, and the liquid suction pump is driven via the pump for operating the fire extinguisher.

The automatic liquid absorbing mechanism for a vehicle according to the present invention includes a chemical tank in which a foam extinguishing agent is stored, a tank side pipe in which the foam extinguishing agent absorbed by the liquid absorbing pump is delivered to the chemical tank, and A mixing side pipe in which the foam extinguishing agent absorbed by the liquid absorption pump is sent to the mixing pump, and a switching valve for switching the path of the foam extinguishing agent to the tank side piping or the mixing side piping, It is characterized by

A fire engine vehicle according to the present invention is characterized by being provided with an automatic liquid absorbing mechanism for a vehicle.

The automatic liquid absorbing mechanism for a vehicle according to the present invention has the above-mentioned configuration. That is, since the individual pumps are provided, the foam extinguishing agent is absorbed by the liquid suction pump, and the foam extinguishing agent and the fire extinguishing water are mixed by the mixing pump. Therefore, it is possible to simultaneously mix the fire extinguishing water and the foam extinguishing agent and replenish the foam extinguishing agent. In addition, if the vehicle automatic liquid absorbing mechanism absorbs the foam extinguishing agent, the foam extinguishing agent can be replenished without depending on the foam liquid carrier, so that the vehicle carrying the foam extinguishing agent can be used regardless of the ministerial ordinance. It can be arbitrarily selected. Moreover, along with this, the number of disaster prevention personnel can be reduced. Further, since the replenishment work is uniform regardless of the type of the foaming liquid carrier, it is possible to realize a simple replenishment work.

In the vehicle automatic liquid absorption mechanism according to the present invention, the power take-out mechanism is a full power PTO, and a water pump for sending fire extinguishing water by the first power taken out from the drive source via the full power PTO; There is provided a hydraulic motor for generating secondary power for driving the mixing pump by the fire extinguishing water sent by the water pump. That is, the water pump is driven by the first power taken out through the full power PTO. Next, the mixing pump is driven by the secondary power taken out from the hydraulic motor driven by the power of the fire extinguishing water, and the fire extinguishing water and the foam extinguishing agent are mixed. Therefore, it is possible to mix the fire extinguishing water and the foam extinguishing agent independently of the replenishment of the foam extinguishing agent by a new auxiliary power which has not been available in the past.

In the automatic liquid absorption mechanism for a vehicle according to the present invention, the power take-out mechanism is the side PTO, and the fire extinguisher operating pump that operates the fire extinguishing apparatus by the second power taken from the drive source via the side PTO is The liquid suction pump is provided via the pump for operating the fire extinguisher. That is, the pump for operating the fire extinguisher is driven by the second power taken out via the side PTO. Next, the liquid absorption pump is driven via the pump for operating the fire extinguisher to absorb the foam extinguishing agent. Therefore, it is possible to replenish the foam extinguishing agent independently of mixing the fire extinguishing water and the foam extinguishing agent by the liquid suction pump.

An automatic liquid absorbing mechanism for a vehicle according to the present invention includes a chemical tank for storing a foam extinguishing agent, a tank-side pipe for sending the foam extinguishing agent absorbed by a liquid absorbing pump to the chemical tank, and a liquid absorbing pump. A mixing-side pipe through which the foam extinguishing agent absorbed by is sent to the mixing pump, and a switching valve for switching the path of the foam extinguishing agent to the tank-side piping or the mixing-side piping are provided. That is, when the foam extinguishing agent is sent to the tank side pipe, the foam extinguishing agent is stored in the medicine tank, while when the foam extinguishing agent is sent to the mixing side pipe, the foam extinguishing agent is sent to the mixing pump. It is liquefied and mixed with fire extinguishing water. In the former case, it is possible to replenish the foam and to mix the fire extinguishing water with the foam extinguishing agent at the same time. In the latter case, the foam extinguishing agent is stored and the water and the foam extinguishing agent are mixed. Mixing can be done simultaneously.

A fire truck according to the present invention is equipped with the above-described vehicle automatic liquid absorption mechanism. Therefore, it is possible to achieve the same effect as the automatic liquid absorbing mechanism for a vehicle.

It is explanatory drawing explaining the mode of supply of the foam extinguishing chemical|medical agent in the conventional large-scale chemical height watering vehicle. It is a schematic diagram of the structure for taking out power in the conventional large-scale chemical high-altitude water vehicle. It is a piping system diagram of the conventional large-scale chemical height watering vehicle. It is a piping system figure of the conventional foaming liquid carrier. It is an appearance side view of a fire engine concerning an embodiment of the present invention. 1 is a schematic view of a power take-out mechanism of a fire engine equipped with an automatic liquid absorbing mechanism for a vehicle according to an embodiment of the present invention. FIG. 1 is a piping system diagram of a fire engine automobile equipped with a vehicle automatic liquid absorption mechanism according to an embodiment of the present invention. It is explanatory drawing explaining the mode of supply of the foam extinguishing agent in the fire engine which concerns on embodiment of this invention.

Hereinafter, an automatic liquid absorbing mechanism for a vehicle according to an embodiment of the present invention will be described together with a fire engine based on FIGS. 5 to 7. FIG. 5 shows the external appearance of a side surface of a large chemical high-altitude water discharge vehicle 1 as a fire engine vehicle. FIG. 6 shows the outline of the power take-out mechanism and the vehicle automatic liquid absorbing mechanism. FIG. 7 shows a piping system diagram of the large-scale chemical high-altitude water discharge vehicle 1. Although the present embodiment is a large-scale chemical aerial vehicle, the fire engine according to the present invention includes various fire engine vehicles such as a chemical fire pump vehicle.

As shown in FIG. 5, the large-scale chemical high-altitude water discharge vehicle 1 is a moving body in which each device is mounted on a large-scale chassis (not shown) dedicated to firefighting. A fire extinguishing activity is carried out by foaming a mixed liquid of a fire extinguishing agent and water for extinguishing fire. In particular, the large-scale chemical high-altitude water discharge vehicle 1 mainly absorbs and supplies the foam extinguishing agent from the outside to mix the fire extinguishing water and the foam extinguishing agent and simultaneously replenish the foam extinguishing agent. ..

That is, the large-scale chemical high-altitude water discharge vehicle 1 has a pump chamber 2 in which various pumps are housed, a foam stock solution tank 8 as a chemical tank storing foam extinguishing agents, and a drive source for driving the large-sized chemical high-altitude water discharge vehicle 1. Engine 20 (see FIG. 6), each PTO 24, 25 (see FIG. 6) as a power take-out mechanism for taking out power from the engine 20, and a vehicle automatic liquid absorbing mechanism for absorbing the foam extinguishing agent from the outside (see FIG. 6). 6 and FIG. 7), various pipes that are channels for fire extinguishing water and foam extinguishing agents, a rear body 10 that covers a large chassis, a front jack 11 and a rear jack 12 that ground and support the vehicle body, and expansion and contraction as a fire extinguishing device. It is provided with a free water discharge tower 13, a swivel support 16 for rotating the water discharge tower 13, an undulating cylinder 17 for ups and downs of the water discharge tower 13, and a telescopic water pipe 18 that expands and contracts together with the water discharge tower 13.

The pump chamber 2 is provided with a foam stock solution suction port 3, a foam mixing operation unit 4, a relay water suction port 5, a water/mixed liquid discharge port 6 and a water suction port 7. The foam concentrate tank 8 is provided with a foam concentrate tank loading port 9. A remote water spray gun 14 is connected to the tip of the water spray tower 13, and a tower bubble nozzle 15 is connected to the remote water spray gun 14.

Next, the vehicle automatic liquid absorption mechanism will be described with reference to FIG. 6 together with the PTOs 24 and 25.

As shown in FIG. 6, the engine 20 is provided with a full power PTO 24 connected between the clutch 21 and the transmission 22 and a transmission side PTO 25 connected beside the transmission 22. A plurality of powers are taken out from the engine 20 via each PTO 24, 25. The full power PTO 24 is connected to the water pump 40 via the shaft 23, while the transmission side PTO 25 is connected to the fire extinguisher operating pump 41 via the shaft 23.

The water pump 40 is driven by the first power extracted from the engine 20 via the full-power PTO 24, absorbs fire extinguishing water from a water source such as a fire hydrant, a fire protection tank, or a river, and sends the fire extinguishing water to each pipe. To do. The water power/mixing device 30 is connected to the downstream side of the water pump 40. The hydraulic power/mixing device 30 includes a hydraulic motor 31 and a mixing pump 32. The hydraulic motor 31 generates secondary power by the flow of fire extinguishing water, and drives the mixing pump 32 with this secondary power. The mixing pump 32 mixes the foam extinguishing agent and the fire extinguishing water to generate a mixed liquid.

The fire extinguisher operating pump 41 is, for example, a hydraulic pump, and an oil motor 43 is connected via a hydraulic valve 42. The oil motor 43 is connected to the liquid suction pump 44. The fire extinguisher operating pump 41 is driven by the second power taken out from the engine 20 via the transmission side PTO 25, and operates, for example, the swivel support base 16 and the undulating cylinder 17. The liquid suction pump 44 is driven by the second power through the fire extinguisher operation pump 41, and is supplied from the outside of the large chemical height watering vehicle 1 with, for example, a transport vehicle 80 (see FIG. 8) loaded with a tank 81. , Absorb the foam extinguishing agent from the reservoir of the foam extinguishing agent.

Next, the vehicle automatic liquid absorption mechanism will be described with reference to FIG. 7 together with the piping system of the large-scale chemical high-altitude water discharge vehicle 1.

Explaining from the water source side of the fire extinguishing water, as shown in FIG. 7, the pair of water suction ports 7 and the relay water suction port 5 are connected to the first water channel pipe 45, and the first water channel pipe 45 of the water pump 40. It is connected to the upstream side. The water pump 40 has a second water pipe 46 connected downstream. The second water pipe 46 is branched into a water passage 47 and a mixed liquid passage 48, and is joined by a third water pipe 49. The mixed liquid path 48 is connected to the hydraulic motor 31 of the hydraulic power/mixing device 30, and the mixed liquid passage pipe 58 of the foam extinguishing agent is connected to the downstream side of the hydraulic motor 31. The mixed liquid supply pipe 58 is appropriately equipped with a foam liquid meter flow meter 51, a mixing pump compound gauge 52, a mixing pump pressure gauge 53, and the like.

The water discharge flowmeter 54 is attached to the third water pipe 49 and is connected to the telescopic water pipe 18. A branch water channel pipe 50 is connected to the third water channel pipe 49, and the branch water channel pipe 50 is connected to the water/mixed liquid discharge port 6. In addition, a mixed liquid pressure gauge 55, a water pump pressure gauge 56, a water pump compound gauge 57, and the like are appropriately attached to each of the water pipes 45, 46, and 50.

Next, the description will be given from the source of supplying the foam extinguishing agent. The foam stock solution suction port 3 is connected to the first liquid passage pipe 60, and the liquid suction pump 44 is connected to the first liquid passage pipe 60. Further, the relief valve 66 is bypassed in the first liquid passage pipe 60. The liquid suction pump 44 is connected to the second liquid passage pipe 61 on the downstream side and is connected to the switching valve 67. The switching valve 67 has a tank side liquid passage pipe 64 and a mixing side liquid passage pipe 65 branched and connected to the downstream side. That is, the switching valve 67 switches the path of the foam extinguishing agent to the tank-side liquid passage pipe 64 or the mixing-side liquid passage pipe 65.

The tank-side liquid passage pipe 64 is connected to the foam stock solution tank 8 via a tank liquid feeding valve 68. On the other hand, the mixing side liquid passage pipe 65 is connected to the mixing pump 32 of the water power/mixing device 30 via the liquid suction valve 33.

The foam stock solution tank 8 is connected to a third liquid passage pipe 62 via a tank suction source valve 69, and the third liquid passage pipe 62 is connected via a liquid suction valve 33 to the mixing pump of the water power/mixing device 30. Connected to 32. In addition, the foam liquid concentrate tank 8 is connected to a fourth liquid passage pipe 63 via a tank liquid suction source valve 69 and a foam liquid concentrate strainer 70. It is connected to the mixing pump 32 of the mixing device 30. Further, the foam concentrate tank 8 is connected to the foam concentrate tank loading port 9 and the liquid meter 71.

The piping system is configured as described above. Next, the operation of the vehicle automatic liquid absorbing mechanism will be described with reference to FIGS. FIG. 8 shows how the foam fire extinguishing agent is replenished in the large chemical aerial vehicle 1.

6 and 7, when the engine 20 is being driven and the first power is extracted from the engine 20 via the full power PTO 24 to drive the water pump 40, the relay water intake port 5 connected to the water source Fire extinguishing water is absorbed from the water intake port 7 and flows through the first water conduit pipe 45. When only the fire extinguishing water is discharged without bubbles being radiated, the fire extinguishing water flows through the second water pipe 46, the third water pipe 49 and the expansion water pipe 18 and is discharged from the tower foam nozzle 15. Further, when the second power is taken out from the engine 20 through the transmission side PTO 25 and the fire extinguisher operating pump 41 is driven, in FIG. 5, the swivel support base 16 and the undulating cylinder 17 are operated, and the water discharge tower 13 is freely operated. Turn to and undulate.

On the other hand, when bubbles are emitted, in FIG. 7, the fire extinguishing water sucked by the water pump 40 flows into the hydraulic power motor 31 of the hydraulic power/mixing device 30 to generate secondary power. That is, when the fire extinguishing water flows and the vanes of the hydraulic motor 31 rotate, a differential pressure is generated, and this differential pressure is converted into rotational motion and the mixing pump 32 is driven, whereby the foam extinguishing agent in the foam concentrate tank 8 is discharged. Is sucked. The foam extinguishing agent flows through the third liquid passage pipe 62 or the fourth liquid passage pipe 63, further flows through the mixed liquid passage pipe 58, and is mixed with fire extinguishing water on the downstream side of the hydraulic motor 31 to form a mixed liquid. The mixed liquid flows through the third water conduit tube 49 and the expansion water conduit tube 18, and is bubble-emitted from the tower bubble nozzle 15.

When replenishing the foam extinguishing agent during foam emission, as shown in FIG. 8, the foam stock solution suction port 3 of the large-scale chemical height watering can 1 and the tank loading port 82 of the carrier 80 are sucked with a liquid hose. Connect at 83. In FIG. 7, when the remaining amount of the foam extinguishing agent in the foam concentrate tank 8 becomes, for example, 1/4 or less, the liquid absorbing pump 44 is automatically driven to absorb the foam extinguishing agent, and the liquid absorbing hose 83. The foam is extinguished and is replenished. That is, the oil pressure generated by driving the fire extinguishing apparatus operating pump 41 by the second power causes the oil motor 43 to rotate and the liquid suction pump 44 to drive.

When the tank-side liquid passage pipe 64 is selected as the path for the foam extinguishing agent by the switching valve 67, the foam extinguishing agent flows through the tank-side liquid passage pipe 64 and is stored in the foam stock solution tank 8. That is, the foam extinguishing agent is replenished to the foam stock solution tank 8 at the same time as foam emission. When the foam stock solution tank 8 is full, the liquid absorption pump 44 automatically stops, and the absorption of the foam extinguishing agent also stops.

On the other hand, when the mixing-side liquid passage pipe 65 is selected as the path for the foam extinguishing agent by the switching valve 67, the foam extinguishing agent flows through the mixing-side liquid passage pipe 65 and further through the mixing liquid passage pipe 58 to cause the hydraulic motor 31. Is mixed with fire extinguishing water on the downstream side. That is, at the same time as the foam emission, the supplied foam extinguishing agent is directly sucked by the mixing pump 32 without going through the foam stock solution tank 8 to become a mixed solution.

As described above, the vehicle automatic liquid absorption mechanism and the large-scale chemical high-altitude water vehicle 1 are configured. In the embodiment described above, when the remaining amount of the foam extinguishing agent becomes 1/4 or less, the liquid absorption pump 44 is automatically driven to replenish the foam extinguishing agent, but the liquid absorption pump 44 is automatically operated. The remaining amount of the foam extinguishing agent for mechanically driving is arbitrary. Further, as another embodiment, the liquid absorption pump 44 may be manually driven regardless of the remaining amount of the foam extinguishing agent, and only the fire extinguishing water is discharged while the foam is not emitted. The liquid pump 44 may be driven to store the foam extinguishing agent in the foam stock solution tank 8.

Next, the effects of the vehicle automatic liquid absorption mechanism and the large-scale chemical high-altitude water discharge vehicle 1 will be described.

As described above, according to the vehicle automatic liquid absorption mechanism and the large-scale chemical high-altitude water discharge vehicle 1, as shown in FIG. 6, the hydraulic motor 31 and the mixing pump 32 are provided on the downstream side of the water pump 40. A water power/mixing device 30 is connected. The pump 41 for operating the fire extinguisher is connected to an oil motor 43 via a hydraulic valve 42, and the oil motor 43 is connected to a liquid suction pump 44. With this configuration, the water pump 40 is driven by the first power extracted from the engine 20 via the full power PTO 24, and the water for fire extinguishing flows to cause the hydraulic motor 31 to generate secondary power. The mixing pump 32 is driven. The mixing pump 32 mixes the foam extinguishing agent and the fire extinguishing water to generate a mixed liquid. Further, the fire extinguishing device operating pump 41 is driven by the second power taken out from the engine 20 via the transmission side PTO 25, and the liquid suction pump 44 is driven by the oil pressure rotating the oil motor 43. The liquid suction pump 44 absorbs and replenishes the foam extinguishing agent. That is, since the mixing pump 32 and the liquid suction pump 44 are separately provided, the mixing pump 32 mixes the foam extinguishing agent and the water for extinguishing water, while the liquid suction pump 44 supplies the foam extinguishing agent.

Therefore, it is possible to simultaneously mix the fire extinguishing water and the foam extinguishing agent and replenish the foam extinguishing agent. That is, the large-scale chemical high-altitude water discharge vehicle 1 can simultaneously perform the foam emission and the replenishment of the foam extinguishing agent by mainly absorbing and replenishing the foam extinguishing agent from the outside. Further, if the vehicle automatic liquid absorbing mechanism absorbs the foam extinguishing agent, the foam extinguishing agent can be replenished without depending on the foam concentrate delivery vehicle 180. It can be arbitrarily selected regardless of. This can reduce the burden of fire fighting in the complex area. Further, the transport vehicle 80 can reduce the number of disaster prevention personnel as compared with the foam concentrate transport vehicle 180. Further, since the replenishment work is uniform regardless of the type of the foaming liquid carrier 180, a simple replenishment work can be realized.

As described above, in addition to the first power extracted from the engine 20 via the full-power PTO and the second power extracted from the engine 20 via the side PTO, the third power is used as the fire extinguishing water. A hydraulic motor 31 for generating secondary power is provided. Therefore, by driving the hydraulic motor 31 and the mixing pump 32 by a new auxiliary power that has not existed in the past, it is possible to mix the fire extinguishing water and the foam extinguishing agent independently from the supply of the foam extinguishing agent. In this way, if the mixed liquid is generated by the secondary power, the second power is released, so that the liquid suction pump 44 can be newly provided and driven. By driving the liquid suction pump 44 by the second power, the foam extinguishing agent can be replenished independently from the mixture of the fire extinguishing water and the foam extinguishing agent.

According to the automatic liquid absorbing mechanism for a vehicle and the large-scale chemical high-altitude water discharge vehicle 1, the switching valve 67 is provided, and the switching valve 67 has the tank-side liquid passage pipe 64 and the mixing-side liquid passage pipe 65 that branch on the downstream side. Then connected. With this configuration, the path of the foam extinguishing agent is switched to the tank-side liquid passage pipe 64 or the mixing-side liquid passage pipe 65 by the switching valve 67. When the tank-side liquid passage pipe 64 is selected as the path for the foam extinguishing agent by the switching valve 67, the foam extinguishing agent flows through the tank-side liquid passage pipe 64 and is stored in the foam stock solution tank 8. Therefore, the foam extinguishing agent can be supplied to the foam stock solution tank 8 simultaneously with the foam emission, and the foam extinguishing agent can be continuously supplied without interruption of the foam emission. On the other hand, when the mixing-side liquid passage pipe 65 is selected as the path for the foam extinguishing agent by the switching valve 67, the foam extinguishing agent flows through the mixing-side liquid passage pipe 65 and further through the mixing liquid passage pipe 58 to cause the hydraulic motor 31. Is mixed with fire extinguishing water on the downstream side. Therefore, at the same time as the foam emission, the supplied foam extinguishing agent can be directly sucked by the mixing pump 32 without using the foam stock solution tank 8 to generate a mixed solution.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment. The present invention can be modified in various ways without departing from the matters described in the claims.

1,101 Large chemical high-altitude water vehicle (fire engine)
2 Pump chamber 3,103 Foam stock solution suction port 4,104 Foam mixing operation part 5,105 Relay water intake port 6,106 Water/mixed solution discharge port 7,107 Water absorption port 8,108 Foam solution tank (chemical tank)
9,109 Foam stock solution tank loading port 10 Rear body 11 Front jack 12 Rear jack 13,113 Water discharge tower (fire extinguisher)
14 Remote Water Spray Gun 15,115 Tower Bubble Nozzle 16,116 Swivel Support Stand 17 Elevating Cylinder 18 Telescopic Pipe 20,20 Engine (Drive Source)
21 clutch 22 transmission 23 shaft 24,124 full power PTO (power take-out mechanism)
25,125 Transmission side PTO (power take-out mechanism)
30 Water Power/Mixing Device 31 Hydraulic Motor 32 Mixing Pump 33 Liquid Absorption Valve 40,140 Water Pump 41 Fire Extinguisher Operation Pump 42,142 Hydraulic Valve 43,143 Oil Motor 44 Liquid Suction Pump 45 First Water Pipe 46 Second Water Canal Pipe 47 Water route 48 Mixed liquid route 49 Third channel pipe 50 Branch channel pipe 51,151 Foam stock solution flow meter 52 Mixing pump compound gauge 53 Mixing pump pressure gauge 54,154 Water discharge flow meter 55,155 Mixed fluid pressure gauge 56, 156 Water pump pressure gauge 57,157 Pump compound gauge 58 Mixed liquid passage pipe 60 First liquid passage pipe 61 Second liquid passage pipe 62 Third liquid passage pipe 63 Fourth liquid passage pipe 64 Tank side liquid passage pipe 65 Mixing side Liquid line pipe 66 Relief valve 67 Switching valve 68 Tank liquid feeding valve 69,169 Tank liquid suction valve 70,170 Foam liquid strainer 71,171 Liquid level meter 80 Transport vehicle 81 Tank 82 Tank loading port 83 Liquid suction hose 126 Split Mission 132 Foam stock solution feed pump 141 Hydraulic pump 144 Foam stock solution pump 146 Foam stock solution pressure inlet 160 Foam stock solution pump suction side piping path 161 Foam stock solution pump discharge side piping path 166 Check valve 167 Foam stock solution adjusting valve 168 Valve 173 Tank solution Valve 174 Mixing valve 175 Foam stock solution pump compound meter 176 Foam stock solution pump pressure gauge 177 Unload valve 180 Foam stock solution carrier 181 Foam stock solution tank 183 Liquid feed hose 185 Foam stock solution discharge port 186 Foam stock solution feed pump 187 Foam stock solution operation part

Claims (3)

A fire engine equipped with an automatic liquid absorption mechanism for vehicles that absorbs foam extinguishing agents while continuing foam emission.
The vehicle automatic liquid absorption mechanism,
A power take-out mechanism that takes out power from a drive source that drives the vehicle,
By the power taken out from the power take-out mechanism, a fire extinguisher operating pump for operating the fire extinguishing device, and a water pump for sending fire extinguishing water,
A hydraulic motor that generates secondary power by the fire extinguishing water sent by the water pump,
A mixing pump that mixes the foam extinguishing agent and the fire extinguishing water by being driven by the secondary power generated by the hydraulic motor.
A liquid suction pump for absorbing a foam extinguishing agent from the outside of the vehicle via the fire extinguisher operating pump;
The water pump and the mixing pump are driven to perform foam emission with a mixed liquid of fire extinguishing water and foam extinguishing agent, and the liquid absorption pump is driven during foam emission to continue foam emission. Absorb foam extinguishing agents,
A fire-fighting vehicle characterized by that. When the remaining amount of the foam extinguishing agent becomes less than a predetermined amount, the liquid suction pump is driven ,
The fire engine vehicle according to claim 1, wherein: The power take-off mechanism for driving the water pump is a full power PTO,
The power take off mechanism for driving the extinguishing device operating pumps is Ru side PTO der,
The fire engine vehicle according to claim 1 or 2, characterized in that.

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