WO2016104240A1

WO2016104240A1 - Fire pump vehicle having submerged pump

Info

Publication number: WO2016104240A1
Application number: PCT/JP2015/085023
Authority: WO
Inventors: 幸一武内
Original assignee: 日本機械工業株式会社
Priority date: 2014-12-26
Filing date: 2015-12-15
Publication date: 2016-06-30
Also published as: CN107106882A; JP2016123562A; JP6113710B2

Abstract

[Problem] The purpose of the present invention is to provide a fire pump vehicle that has a wide range of firefighting activity, the fire pump vehicle making it possible to respond to fires that range in scope from a normal fire to a disaster or major fire, as well as to the condition of the water source, such as the height to the water surface or the distance to a water source from which the required amount of water suitable for the scope of the fire and used in fighting the fire can be obtained. [Solution] A fire pump vehicle having a submerged pump and being capable of supplying water over great distances, in which: a traditional fire pump, a water-supplying hydraulic submerged pump placed underwater, and a hydraulic pump for feeding and driving pressurized oil to the hydraulic submerged pump are mounted on the fire pump vehicle; either the traditional fire pump or the hydraulic pump is selected and switched in response to the scope of a fire and the condition of a water source, such as the height to the water surface or the distance to the water source from which the amount of water required for fighting the fire can be obtained; the traditional fire pump or the hydraulic pump is connected to the full-power PTO of a vehicle propulsion engine and is driven; a separate small hydraulic pump is further connected to the side PTO of the vehicle propulsion engine and made to drive the hydraulic submerged pump; and water supplied from the hydraulic submerged pump is pressurized by the drive of the traditional fire pump.

Description

Fire pump car with submersible pump

The present invention relates to a firefighting pump vehicle, which is equipped with a conventional firefighting pump, a hydraulic submersible pump, and a hydraulic pump that feeds and drives pressurized oil to the hydraulic submersible pump to cope with the scale of a fire. The present invention relates to a fire-fighting pump vehicle with a submersible pump that selects either a conventional fire-fighting pump or a hydraulic submersible pump and enables water intake by driving a vehicle traveling engine.

The distance to the water source that can absorb water with the fire pump installed in the conventional fire pump car is about 10m, and the altitude difference to the water surface that can absorb water is theoretically about 7m, and fire hydrants and water tanks for fire extinguishing are provided. However, in the event of a large fire due to a large-scale disaster, it will be difficult to obtain a large amount of water required for extinguishing fire from these fire hydrants and water tanks. It must be sought for rivers, coasts, lakes, etc. where a large amount of water can be obtained. However, in this case, there are few places that can cope with the difference in the water absorption distance and the water absorption height of the conventional fire pump car.
As a solution to this problem, several inventions have been disclosed for fire fighting apparatuses that can take water far beyond the distance at which the fire pump vehicle can absorb water and the difference in altitude at which water can be absorbed by pushing up water using a submersible pump.
For example, in Patent Document 1, “a base unit storing an engine, a submersible pump that can be transported to an arbitrary place independently from the base unit, and is remotely driven by power energy of the engine, and the submersible pump. A fire-fighting device composed of a water discharge hose connected to the discharge side of the water. (Claim 1) "is disclosed, and" the water is sent directly from the submersible pump to the fire hose so that the output of the submersible pump is increased. Depending on the altitude between the water surface of the water intake source and the land where the base unit is placed, it will be possible to transmit water without relaying a pump car, etc. even on long distances of several hundred meters to several kilometers. “Even if the difference is higher than about 10 m, water can be easily supplied (paragraph 0007)”.
And, “a fire fighting apparatus according to claim 1 in which at least the base unit and the submersible pump are loaded and unloaded on a moving vehicle. (Claim 3)”. The case where fire fighting equipment is mounted on the trailer T is shown to enable long-distance water transmission of several kilometers, and this trailer T is divided into the right and left by a partition wall 20 and one of them is a hose hangar 21. Thus, for example, a plurality of water discharge hoses 12 corresponding to a total extension of 3 km are stored, the base unit 1 and the submersible pump 9 are stored in the opposite space, and a tool storage 22 is formed on the front side thereof. ”, Suggesting that a fairly large trailer will be required.

Patent Document 2 states that “a power source, a submersible pump that is driven by the power source and discharges water absorbed from the water inlet into the water outlet, and a pump that connects the water outlet of the submersible pump and the fire pump. A water absorption length of a fire fighting pump and a water absorption height extending method and device (claim 4), characterized by comprising a water pipe.
One embodiment of this apparatus supplies an oil pump driven by an engine of a fire pump car, a generator as a power source driven by the oil pump, and electric power generated by the generator to an underwater pump. And an operation panel and a cable for driving the submersible pump, and a water pipe connecting the submersible pump and the fire fighting pump (see paragraph “0013” and FIG. 1 of the specification).
As another embodiment, the oil pump as a power source is provided with an oil tank and a hydraulic operation panel, and the operation panel is provided with a hydraulic outlet and a hydraulic return port. When the return port and the submersible pump are connected by a pressure hose, and the oil pump is driven by the engine of the fire pump car, the oil pumped from the oil tank by the oil pump is sent to the submersible pump via the pressure hose and then the pressure hose The submersible pump is returned to the oil tank through the oil and the submersible pump is operated by the circulation of the oil (see the specification “0027” and FIG. 7).
In any case, the power source of the submersible pump is the engine of the fire pump, and the fire pump is also driven by the engine of the fire pump (see FIGS. 1 and 7). Therefore, a vehicle with a dedicated underwater pump that does not have a dedicated engine to drive the submersible pump can be made smaller and lighter, and the fire pump car with a submersible pump that is highly mobile can be constructed. Since it is distributed and supplied to the hydraulic pump that drives the submersible pump, the number of revolutions of the submersible pump is kept low, the intake water pressure is lower than that of the invention of Patent Document 1, and the altitude difference to the water surface where intake is possible is up to about 20 m. .

JP-A-7-185031 Japanese Patent Laid-Open No. 9-38234

However, the fire fighting apparatus of Patent Document 1 is used by placing a base unit storing a dedicated engine for driving a submersible pump on land close to the water surface where the submersible pump is inserted, and at least the base The unit and the submersible pump must be moved to a water intake location and are mounted on a mobile vehicle so that they can be unloaded. Therefore, the engine of a moving vehicle is used only when traveling, and does not contribute to fire fighting activities as in the case of conventional firefighting pump vehicles. Further, as described above, the interior of the trailer as a moving vehicle is divided into left and right by a partition wall. If one of them is a hose hangar that houses multiple water discharge hoses with a total length of 3 km, for example, and a base unit or submersible pump is stored in the opposite space, the weight and shape of the trailer that is a mobile vehicle In both cases, the output of the trailer traveling engine must be increased.
The firefighting device disclosed in Patent Document 1 is put into practical use as a “seawater-based firefighting water utilization system” (manufactured by Teikoku Textile Co., Ltd.). According to the document, water can be taken from a water source having a head of up to 50 m and the diameter is 150 mm. It is possible to send water over a distance of over 1800 m with this water supply hose. In addition, it is possible to avoid an increase in the size of the trailer by providing a hose hangar, and to lay a hose for a long distance, for example, “total extension 3 km”. One set consisting of a water truck equipped with a pump and a container-type hose extension car equipped with a recovery device that collects the large-diameter hose, which is equipped with a large-diameter hose with a diameter of 150 mm that delivers water over a distance of over 1800 m It is supposed to be operated by.
For this reason, although this fire fighting equipment is effective as a preparation in case of a major disaster or a major fire, there is a problem that it is not suitable for operation in a normal fire and there are few opportunities for activities.
In the invention of Patent Document 2, the power for driving the submersible pump is obtained from an oil pump that is driven by an engine of a fire fighting pump vehicle or a generator that is driven by the oil pump. Although it can be made lighter and smaller than a mobile vehicle loaded with the device of the invention, since the output of the vehicle running engine is distributed and used for driving the fire fighting pump and the submersible pump, the output of the submersible pump is that of Patent Document 1 equipped with a dedicated engine. Compared to firefighting equipment, the height to the surface of water that can be taken with a submersible pump remains only about 20 m, and the range of available water sources is narrowed.
However, since the water taken from the submersible pump is pressurized and sent by the fire fighting pump, it is possible to send water over a longer distance, but the same approach as in Patent Document 1 is required for handling the long-distance water supply hose.
Accordingly, the invention of Patent Document 2 is also effective as a preparation for the occurrence of a major disaster and a large fire, as in the invention of Patent Document 1, but it is not suitable for operation in a normal fire and there are few opportunities for activity. There is.
The present invention has been made in view of the problems of the above-mentioned peripheral technologies, and the distance to the water source and the altitude to the water surface so that the fire-fighting water required depending on the scale of the fire can be obtained from a normal fire to a fire at the time of a major disaster. The aim is to provide a fire-fighting pump car that can respond appropriately to water source conditions such as differences.

The present inventor has solved the above problems by the following means.
(1) A fire fighting pump vehicle, a conventional fire fighting pump, a hydraulic submersible pump that is installed in water, takes water, and supplies water, and a hydraulic pressure that sends pressurized oil to the hydraulic submersible pump Based on the situation of the water source for fire extinguishing, such as the amount of water required for fire fighting according to the scale of the fire, the distance to the water source from which the necessary water amount can be obtained, the altitude difference to the water surface, etc. With a submersible pump characterized by comprising a connection switching mechanism that selects and switches either a fire pump of a type or a hydraulic pump that drives a hydraulic submersible pump and connects to a full power PTO of a vehicle running engine Fire pump car.
(2) A conventional fire fighting pump and a hydraulic pump and a switching connection mechanism to a full power PTO of a vehicle running engine include a main gear provided at a tip of a drive shaft connected to the full power PTO, A conventional fire pump is connected to a rotation shaft of one of the slave gears so that it can be connected and disconnected by a power transmission mechanism such as a clutch, and the other slave gear of the other slave gear. A hydraulic pump having an unload valve is connected to the rotating shaft, and the conventional fire pump is driven by a power transmission mechanism such as the clutch, and the hydraulic submersible pump is applied to the hydraulic motor by opening and closing the unload valve. The fire pump vehicle with a submersible pump according to (1), wherein the drive by the supply of pressure oil can be switched.
(3) A small hydraulic pump is separately connected to the drive shaft connected to the side PTO of the vehicle traveling engine of the fire pump vehicle with the submersible pump described in (1) or (2), and the small hydraulic pump A hydraulic submersible pump is driven, the water taken in by the hydraulic submersible pump is taken into the water inlet of the conventional fire pump and pressurized by driving the conventional fire pump to enable long-distance water supply. A fire pump car with a submersible pump.
(4) The hydraulic submersible pump has a float, and the hydraulic submersible pump floats in the vicinity of the water surface of the water source so that water can be taken in. (1) to (3) A fire pump vehicle with a submersible pump according to item 1.

The following effects can be exhibited by the fire pump vehicle with the submersible pump of the present invention.
<1> The fire fighting pump vehicle of the present invention is driven by a conventional fire fighting pump, a hydraulic submersible pump that is installed in water, takes water, and sends water, and pressurizes oil to the hydraulic submersible pump. Mounted with a hydraulic pump, based on the situation of the water source for fire extinguishing, such as the amount of water required for fire fighting according to the scale of the fire, the distance to the water source where the required water amount can be obtained, the altitude difference to the water surface Since either a conventional fire pump or a hydraulic pump that drives a hydraulic submersible pump is selected and switched, and equipped with a switching connection mechanism that connects to the full power PTO of the vehicle running engine,
In a fire of a scale that can be extinguished by taking in water from a fire hydrant or fire tank with a single fire pump car, the fire can be extinguished by driving a conventional fire pump. A large amount of water can be taken by driving the pump, and it can be sent over long distances with a large diameter (for example, 150 mm diameter) hose at a high water pressure, and can be extinguished by diverting water into multiple conventional fire pump cars at the fire site Become.
In addition, the hydraulic pump that drives the hydraulic submersible pump can also be driven by the vehicle running engine, so there is no need to install an engine dedicated to the hydraulic pump, and the vehicle can be made smaller and lighter. It is possible to provide a fire-fighting pump car that can be dispatched without worrying about water source conditions such as the distance to the water surface and the altitude difference to the water surface, and that can be used for fire fighting.
<2> A main gear provided at a tip of a drive shaft connected to the full power PTO, wherein a switching connection mechanism to a full power PTO of a vehicle running engine with a conventional fire fighting pump and a hydraulic pump is provided; A conventional fire pump is connected to a rotation shaft of one of the slave gears so that it can be connected and disconnected by a power transmission mechanism such as a clutch, and the other slave gear of the other slave gear. A hydraulic pump having an unload valve is connected to the rotating shaft, and the conventional fire pump is driven by a power transmission mechanism such as the clutch, and the hydraulic submersible pump is applied to the hydraulic motor by opening and closing the unload valve. Since switching by the supply of pressure oil can be switched,
The full power of the vehicle running engine is transmitted to either the conventional fire pump or the hydraulic pump that is selectively driven, and fire fighting at high pressure is possible.
Further, switching between a conventional fire pump and a hydraulic pump can be easily performed by opening and closing a power transmission mechanism such as a clutch and an unload valve, and a fire pump vehicle with a submersible pump that is easy to extinguish can be provided.

<3> In addition to the effects of <1> or <2>, the fire pump vehicle with a submersible pump of the present invention connects a separate small hydraulic pump to the drive shaft connected to the side PTO of the vehicle running engine. The hydraulic submersible pump is driven by the small hydraulic pump, the water taken in by the hydraulic submersible pump is taken into the water inlet of the conventional fire pump, and pressurized by driving the conventional fire pump. Long-distance water supply,
The full power of the vehicle running engine is not transmitted to the small hydraulic pump and the rotation speed of the submersible pump does not increase, and the water absorption height is about 20 m, but water supply from the hydraulic submersible pump is added by the conventional fire pump. Therefore, a large amount of water can be sent to a fire site at a longer distance without dropping the water pressure, and fire extinguishing activities can be carried out by distributing and supplying to a plurality of fire pump cars.
<4> Since the hydraulic submersible pump has a float and the hydraulic submersible pump floats near the water surface of the water source and can take water,
There is no worry that the amount of water intake will change due to fluctuations in the surface of the water source such as tidal seawater, and a large amount of water necessary for fire fighting activities for large-scale fires can be secured stably and can be sent over long distances.

Configuration conceptual diagram of fire pump car with submersible pump Explanatory drawing of the power transmission mechanism of a fire pump car with a submersible pump of the present invention Explanatory drawing of the power transmission mechanism when using a small hydraulic pump connected to the side PTO of the vehicle engine Conceptual diagram when extinguishing fire by driving only a fire pump with a vehicle running engine Conceptual diagram when extinguishing a fire by driving only a hydraulic pump by a vehicle running engine Conceptual diagram when extinguishing a fire by driving a fire pump and a small hydraulic pump with side PTO connection by a vehicle running engine

EMBODIMENT OF THE INVENTION The form for implementing the fire pump vehicle with a submersible pump of this invention is demonstrated based on the figure of an Example.
FIG. 1 is a conceptual diagram of the construction of a fire pump vehicle with a submersible pump of the present invention, FIG. 2 is an explanatory diagram of a power transmission mechanism of a fire pump vehicle with a submersible pump of the present invention, and FIG. 3 is connected to a side PTO of a vehicle engine. 4 is an explanatory diagram of a power transmission mechanism when a small hydraulic pump is used. FIG. 4 is a conceptual diagram in the case of extinguishing a fire by driving only a firefighting pump by a vehicle traveling engine. FIG. 5 is a diagram of driving only a hydraulic pump by a vehicle traveling engine. FIG. 6 is a conceptual diagram in the case of extinguishing fire by driving a fire pump and a small hydraulic pump connected to the side PTO by a vehicle running engine.
In the figure, 1 is a fire pump vehicle with a submersible pump, 2 is a vehicle running engine, 2a is a full power PTO, 2b is a side PTO, 3 is a conventional fire pump, 3i is a water inlet, 3o is a discharge port, 4 is a hydraulic pressure Pump, 4 'is a small hydraulic pump, 4a, 4a' is an oil feeding hose attachment port, 5 is a hydraulic submersible pump, 5a is a float, 6 is a gear case, 6a is a main gear, 6b and 6c are slave gears, 7a and 7b Is a drive shaft, 7c and 7d are rotating shafts of a slave gear, 8 is a clutch, 9 is a water absorption pipe, 9a is a strainer, 10 is a water discharge hose, 11 is a pressure oil feeding hose, 12 is a reel for housing a pressure oil feeding hose, 13 Is an unloading valve, 14 is a hydraulic motor, 15 is a water pump, 16 is an oil tank, and 17 is a water diverter.

As shown in FIGS. 1 to 3, a fire pump vehicle with a submersible pump according to the present invention includes a conventional fire pump 3, a hydraulic submersible pump 5 that is installed in water, takes water, and supplies water, and the hydraulic submersible pump. Mounted with a hydraulic pump 4 that feeds and drives pressurized oil to the pump, the amount of water required for extinction corresponding to the scale of the fire, the distance to the water source from which the required amount of water can be obtained, the altitude to the water surface Based on the situation of the water source for fire extinguishing such as the difference, either the conventional fire pump 3 or the hydraulic pump 4 for driving the hydraulic submersible pump 5 is selected and switched to the full power PTO 2a of the vehicle running engine 2. It has a switching connection mechanism to connect.
A main gear provided at the tip of a drive shaft 7a connected to the full power PTO 2a is a switching connection mechanism to the full power PTO 2a of the vehicle running engine 2 with the conventional fire fighting pump 3 and the hydraulic pump 4. 6a and two

slave gears

6b and 6c that mesh with the main gear 6a and rotate, and can be connected to and disconnected from a rotary shaft 7c of one of the slave gears 6b by a power transmission mechanism such as a clutch 8. A fire pump 3 is connected, and a hydraulic pump 4 having an unload valve 14 is connected to the rotating shaft 7d of the other slave gear 6c. The conventional fire pump 3 is driven by a power transmission mechanism such as the clutch 8. And the drive by supplying pressurized oil to the hydraulic motor 14 of the hydraulic submersible pump 5 by opening and closing the unload valve 13 can be switched (see FIG. 2).
Further, this switching connection mechanism can be connected to and disconnected from the rotating shaft 7c of the slave gear 6c via a power transmission mechanism such as an electromagnetic clutch in the hydraulic pump 4 as well as the conventional fire pump 3. There may be.
Further, a small hydraulic pump 4 ′ is connected to a drive shaft 7 b connected to the side PTO 2 b of the vehicle travel engine 2 of the fire pump car 1 with the submersible pump, and the hydraulic submersible pump 4 ′ is used to connect the hydraulic submersible pump 4 ′. The pump 5 is driven, the water taken in by the hydraulic submersible pump 5 is taken into the water inlet 3i of the conventional fire pump 3 and pressurized by driving the conventional fire pump 3 to enable long-distance water supply. (See FIG. 3). In this case, the conventional fire pump 3 and the small hydraulic pump 4 ′ are simultaneously driven by the vehicle traveling engine 2 via the full power PTO 2a and the side PTO 2b, respectively.
Since the fire pump vehicle 1 with the submersible pump is provided with a hydraulic pump 4 connected to the full power TPO and a small hydraulic pump 4 ′ connected to the side TPO, these

hydraulic pumps

4, 4 Is mounted with a reel 12 and an oil tank 16 for winding up a pressure-resistant oil supply hose 11 for circulating the pressurized oil in the hydraulic motor 14 of the submersible pump 5 to drive the water supply pump 15 (see FIG. 1). ).
The hydraulic submersible pump 5 is provided with a float 5a, and the hydraulic submersible pump 5 floats near the water surface of the water source so that water can be taken.

As described above, the fire pump vehicle 1 with the submersible pump of the present invention is
A. Fire extinguishing activities by connecting a conventional fire pump 3 to the full power PTO 2a of the vehicle running engine 2 and taking water by the suction force of the fire pump,
B. A hydraulic pump 4 is connected to the full power PTO 2a of the vehicle traveling engine 2 to drive the hydraulic submersible pump 5, and fire extinguishing activities by the pumping power of the hydraulic submersible pump 5;
C. A small hydraulic engine 4 ′ is connected to the side PTO 2 b of the vehicle traveling engine 2 to drive the hydraulic submersible pump 5, and the water supply from the hydraulic submersible pump 5 is taken into the water inlet 3 i of the conventional fire pump 3. The fire extinguishing activity by pressurizing by driving the conventional fire pump 3 and sending it to the water discharge hose from the spout 3o,
It can be selected and used in consideration of the condition of the water source such as the scale of the fire, the amount of water necessary for extinguishing the fire, the distance to the water source where the required water amount can be obtained, and the altitude difference to the water surface.
The three fire extinguishing activities will be described in detail below with reference to FIGS. In addition, in each figure, the equipment which is not used in the fire extinguishing activity described among the installed equipment, its code, and the lead line are indicated by dotted lines.

FIG. 4 shows the equipment use state in the fire fighting activity shown in A above, and the same configuration as that of a conventional fire pump car is adopted. That is, via a power transmission mechanism such as an electromagnetic clutch 8 on the rotating shaft 7c of the slave gear 6b that rotates in mesh with the main gear 6a provided at the tip of the drive shaft 7a connected to the full power PTO 2a of the vehicle traveling engine 2. A conventional fire-fighting pump 3 is connected, and the conventional fire-fighting pump 3 is rotated by the driving of the vehicle running engine 2, and water is drawn from the strainer 9 a at the tip of the water supply pipe 9 introduced into the water by the suction force. Water is discharged from a nozzle (not shown) attached to the tip of the water discharge hose 10 to the fire site to extinguish the fire.
The hydraulic pump 4 connected to the rotary shaft 7d of the slave gear 6c meshed with the main gear 6a also rotates at the same time, but the unload valve 13 provided in the hydraulic pump 4 is opened and pumped from the hydraulic pump 4. The oil is recirculated to the oil tank 16 via the unload valve 13 and therefore does not reach the hydraulic submersible pump 5 and the hydraulic submersible pump 5 is not driven.
In this method, water is pumped from a water source having a height to the water surface of about 3 m as in the case of a conventional fire pump car, and 2800 liters per minute (A1 type) or 2000 liters per second (A2 type) of water is 0.85 MPa. The water discharge performance that can be supplied to the water discharge hose 10 with water pressure is obtained, and it is possible to respond quickly and accurately to a small-scale fire in a place where there is a fire hydrant or a fire tank near the fire site.

FIG. 5 shows the state of use of the equipment in the fire extinguishing activity shown in B above, and it rotates in mesh with the main gear 6a provided at the tip of the drive shaft 7a connected to the full power PTO 2a of the vehicle running engine 2. The hydraulic pump 4 is connected to the rotating shaft 7d of the slave gear 6c, and the hydraulic pump 4 is rotated by the driving of the vehicle traveling engine 2, and the oil pumped up from the oil tank 16 by the suction force is supplied to the pressure-resistant oil supply hose 11. The hydraulic motor 14 is rotated by an oil circulation mechanism that is fed to the hydraulic motor 14 of the hydraulic submersible pump 5 and recirculated to the oil tank 16, and the water pump 15 of the submersible pump 5 is driven to take water, and the water discharge hose. The water is sent to the fire site by 10 and used for fire extinguishing.
At this time, since the conventional fire pump 3 is disconnected from the rotary shaft 7c of the slave gear 6b and the conventional fire pump 3 by a power transmission mechanism such as the electromagnetic clutch 8, the conventional fire pump 3 Will not drive.
In this method, a large amount of water of 3500 liters per minute can be taken from a water source with a height difference of up to 50 m, and can be used for fire extinguishing by supplying water at a pressure of 1 MPa. Therefore, even if a large-scale fire requires a large amount of fire-fighting water, and rivers, coasts, lakes, etc. that provide the necessary amount of water source cannot be obtained near the fire site, water can be sent from a location several kilometers away, and the fire site Thus, it is possible to divert water to a plurality of fire engines by means of the water diverter 17 and to extinguish the fire.
In addition, the fire pump car 1 with this submersible pump can take water even if there is a difference in altitude of up to 50 m between its installation position and the water surface of the water source, so it can be stably for a long time even on the coast where the tide level fluctuates. The required amount of water can be taken, and it can respond appropriately to large-scale fire extinguishing.

FIG. 6 shows the state of use of the equipment in the fire extinguishing activity shown in C. The small hydraulic engine 4 ′ is connected to the side PTO 2b of the vehicle traveling engine 2 to drive the hydraulic submersible pump 5, and the hydraulic pressure Water supply from the water-type submersible pump 5 is taken into the water inlet 3i of the conventional fire pump 3 and pressurized by driving the conventional fire pump 3, and sent to the water discharge hose 10 from the water outlet 3o for fire extinguishing activities It is. The hydraulic submersible pump 5 is provided with oil supply

hose attachment ports

4a and 4a 'in both the hydraulic pump 4 and the small hydraulic pump so that it can be shared with the hydraulic pump 4 connected to the full power PTO 2a.
In this method, the output of the vehicle running engine 2 is used in a distributed manner for driving the conventional fire pump 3 connected to the full power PTO 2a and for driving the small hydraulic pump 4 'connected to the side PTO 2b. The small hydraulic pump does not increase in speed and the water intake pressure drops, but it is possible to pump water from the water surface with an altitude difference of about 20 m, and this is pressurized by the conventional firefighting pump 3, so 4000 liters per minute A large amount of water can be sent at a water pressure of 1.2 MPa and used for fire extinguishing.
Therefore, although the difference in altitude at which the water can be pumped is smaller than the fire extinguishing by driving the hydraulic pump 4 connected to the full power PTO 2a, the water supply amount and the water supply pressure can be increased. Even if rivers, beaches, lakes, etc. that require fire-fighting water and the necessary amount of water source cannot be obtained near the fire site, if a water source with a pumping difference of 20 m or less can be obtained, water can be transported over longer distances or fire sites Water can be diverted to a larger number of fire trucks at the water diverter 17 and fire extinguisher, and it can be expected to contribute to prevention of fire spread of large-scale fires and early extinction.

The fire pump vehicle 1 with a submersible pump according to the present invention has been described with a focus on the device configuration and method of use adapted to the operation in the event of a large fire. It can be taken from the water surface with an altitude difference of 50 m or less or 20 m or less, so it can also be used for drainage activities as a measure to restore inundation damage to underground streets due to flood damage.

1: Fire pump car with submersible pump 2: Engine 2a: Full power PTO
2b: Side PTO
3: Fire pump 3i: Water intake port 3o: Discharge port 4: Large hydraulic pump 4 ': Small

hydraulic pump

4a, 4a': Oil supply hose attachment port 5: Submersible pump 5a: Float 6:

Gear case

6a, 6b, 6c:

Gear

7a, 7b: Drive

shaft

7c, 7d: Rotating shaft of slave gear 8: Clutch 9: Water absorption pipe 9a: Strainer 10: Water discharge hose 11: Pressure oil supply hose 12: Pressure oil supply hose storage reel 13: Unload valve 14 : Hydraulic motor 15: Water pump 16: Oil tank 17: Divider

Claims

A fire fighting pump car, which is a conventional fire fighting pump (3), a hydraulic submersible pump (5) that is installed in the water and takes in water, and sends pressurized oil to the hydraulic submersible pump Equipped with a hydraulic pump (4) to be driven, the amount of water required for extinguishing according to the scale of the fire, the distance to the water source from which the required amount of water is obtained, the altitude difference to the water surface, etc. Based on this, either the conventional fire pump (3) or the hydraulic pump (4) for driving the hydraulic submersible pump (5) is selected and switched, and the full power PTO of the vehicle travel engine (2) is selected. A fire pump vehicle with a submersible pump, comprising a switching connection mechanism connected to (2a).
A drive connected to the full power PTO (2a) is a switching mechanism for switching the conventional fire fighting pump (3) and the hydraulic pump (4) to the full power PTO (2a) of the vehicle traveling engine (2). It has a main gear (6a) provided at the tip of the shaft (7a) and two slave gears (6b, 6c) that mesh with the master gear (6a) and rotate, and one of the slave gears (6b) A conventional fire pump (3) is connected to the rotary shaft (7c) of the other gear (6c) so that it can be connected / disconnected by a power transmission mechanism such as a clutch (8), and the unload valve is connected to the rotary shaft (7d) of the other slave gear (6c). The hydraulic pump (4) provided with (13) is connected, the hydraulic pressure by driving the conventional fire pump (3) by the power transmission mechanism such as the clutch (8) and opening and closing the unload valve (13). Type hydraulic pump (5) hydraulic motor A drive by the supply of pressurized oil to 14), with submersible pump fire pump vehicle according to claim 1, characterized in that formed by the switching controllable.
A small hydraulic pump (4 ') separately connected to the drive shaft (7b) connected to the side PTO (2b) of the vehicle traveling engine (2) of the fire pump vehicle (1) with a submersible pump according to claim 1 or 2. The hydraulic submersible pump (5) is driven by the small hydraulic pump (4 '), and the water taken in by the hydraulic submersible pump (5) is taken into the water intake port of the conventional fire pump (3). A fire pump vehicle with a submersible pump, which is incorporated in (3i) and pressurized by driving the conventional fire pump (3) to enable long-distance water supply.
The hydraulic submersible pump (5) has a float (5a), and the hydraulic submersible pump floats in the vicinity of the water surface of the water source to enable water intake. A fire pump vehicle with a submersible pump according to claim 1.