JP7411933B2 - fire engine - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies Fukuyama City Ashida River Ohashimoto (riverbank) Sale date: November 22, 2020 Yukihito Community Center Sale date: December 25, 2020 Hirakawa City, Kashiwagi-cho (on the premises) Sale Date: January 16, 2020 Yokosuka City Fire Department Comprehensive Training Center (12th Branch) Sale date: January 23, 2020 Yokosuka City Fire Department Comprehensive Training Center (24th Branch) Sale date: January 23, 2020 Date of sale: Tokai City Fire Department South Branch Office Date of sale: February 14, 2020 Sakuho Town, 7th Branch, Car Team 2 Sale date: February 16, 2020 Saitama Western Fire Department (Yanase Branch) Date of sale: February 2020 February 25, 2020 Saitama Western Fire Department (Hirose Branch) Sales date: February 25, 2020 Higashichichibu Fire Brigade, 2nd Division, Division 1 Sales date: February 27, 2020 Okayama City Fire Department Education and Training Center (Fukutani Branch) ) Sales date: February 28, 2020 Okayama City Fire Department Education and Training Center (Noya Branch) Sales date: February 28, 2020 Yokoshiba Hikari Town Hall Sales date: March 3, 2020 Saijo City Fire Department Headquarters Sales Date March 6, 2020 Inzai District Fire Department Inzai Fire Department Sale date March 10, 2020 Hitachi Global Life Solutions Co., Ltd. Sale date March 18, 2020 Mogami Wide Area Municipal Affairs Association Fire Department Headquarters Sale Date March 19, 2020 Satsuma Town Fire Department Sales date March 23, 2020 Minamiboso City Hall Sales date March 25, 2020 Kamaishi Fire Department Sales date March 27, 2020

The present invention relates to a fire engine equipped with a water pump.

As disclosed in Patent Document 1, a fire engine is manufactured by equipping a base vehicle with fire extinguishing equipment such as a water spray pump and its control device. The base vehicle includes a cabin in which an engine is mounted in the lower part, and a chassis in which a transmission device, a steering device, a braking device, and a suspension device are mounted. The chassis is also equipped with an exhaust system that processes exhaust gases generated by the engine. A body to which fittings are attached is installed above the chassis. The pump, which is one of the equipment, receives power from the engine via the power take-off shaft. The pump is housed in a small chamber within the body called the pump chamber. Electrical equipment for operating the pump will also be installed in the pump room.

Base vehicles with a diesel engine power unit are equipped with a black smoke removal device to remove particulate matter from exhaust gas. The black smoke removal device uses a filter to remove particulate matter from exhaust gas. Particulate matter adhering to the filter is removed from the filter through a process called forced re-combustion, in which the filter is heated to a high temperature. Since the black smoke removal device is part of the exhaust system, it is installed at the bottom of the chassis.

JP 2019-5428 Publication

In order to spray water at the scene of a fire, a fire truck keeps its engine running while the vehicle is stationary to drive the pump, but because the airflow that accompanies the vehicle's movement does not provide air cooling, it is difficult for the heat generated in the vehicle to diffuse. In particular, the black smoke removal device that performs forced re-combustion is installed in the chassis, so when the airflow that accompanies driving does not provide air cooling, the heat generated by the black smoke removal device is trapped in the upper body. I'll keep it. For this reason, the heat generated by the black smoke removal device may cause the pump chamber to reach a high temperature.

The present invention has been made in view of the above, and an object of the present invention is to obtain a fire engine that suppresses the rise in temperature of the pump chamber.

In order to solve the above problems and achieve the objects, a fire engine according to the present invention includes a cabin in which an engine is mounted, and an exhaust system that includes a black smoke removal device that removes particulate matter from exhaust gas from the engine. The chassis includes a chassis in which the engine is mounted, a pump to which the engine power is transmitted via the power take-off shaft, and a body installed on top of the chassis, and the body has a pump chamber in which the pump is installed. An opening is provided in the side wall of the pump chamber, at least a portion of the black smoke removal device is installed below the pump chamber, and an airflow directed toward the rear is formed inside the pump chamber. It is characterized by comprising a first fan and a second fan that forms an airflow from the rear of the pump chamber toward the opening in the side wall.

The fire engine according to the present invention has the effect of suppressing the pump chamber from becoming high temperature.

FIG. 1 is a schematic right side view of a fire engine according to an embodiment of the present invention. FIG. 2 is a schematic left side view of the fire engine according to the embodiment. FIG. 3 is a schematic diagram showing the arrangement of the equipment and exhaust system of the fire engine according to the embodiment from the top side. FIG. 4 is a schematic diagram showing the arrangement of the equipment and exhaust system of the fire engine according to the embodiment from the right side.

EMBODIMENT OF THE INVENTION Below, embodiment of the fire engine based on this invention is described in detail based on drawing. Note that the present invention is not limited to this embodiment.

FIG. 1 is a schematic right side view of a fire engine according to an embodiment of the present invention. FIG. 2 is a schematic left side view of the fire engine according to the embodiment. The fire engine 10 according to the embodiment includes a cabin 11 in which an engine 111 is mounted in the lower part, and a chassis 12 in which a transmission device, a steering device, a braking device, and a suspension device are mounted. Note that illustrations of a transmission device, a steering device, a braking device, and a suspension device are omitted. The fire engine 10 includes a body 13 installed on a chassis 12. The body 13 installed on the chassis 12 also covers the side surfaces of the chassis 12. That is, the body 13 is installed so as to cover the chassis 12 from above. The body 13 is divided into a pump chamber 131, an upper materials storage 132, and a rear materials storage 133. A pump 20 for discharging water is installed in the pump chamber 131. The upper materials storage 132 and the rear materials storage 133 are loaded with materials and equipment used for firefighting activities, such as hoses, fire protection clothing, floodlights, and breathing equipment. Note that a riding space may be provided instead of the rear equipment storage 133.

Power is transmitted to the pump 20 from the engine 111 via a power take-off shaft 112. The front wall 31 of the pump chamber 131 is formed with an opening 31a through which the power take-off shaft 112 passes. The opening 31a is large enough so that the power take-off shaft 112 does not interfere with it. Since the opening 31a has a gap only large enough to not interfere with the power take-off shaft 112, hot air from the engine 111 mounted in the cabin 11 does not easily flow into the pump chamber 131 through the opening 31a of the front wall 31 of the pump chamber 131.

A side wall 32 of the pump chamber 131 is provided with a water intake port 321 for taking water into the pump 20, a discharge port 322 for discharging water sent out from the pump 20, and a relay port 323. In the side wall 32 of the pump chamber 131, an opening 321a where the water intake port 321 is located, an opening 322a where the discharge port 322 is located, and an opening 323a where the relay port 323 is located are the water intake port 321, It is larger than the outer diameter of the water supply piping at the discharge port 322 and the relay port 323, and a gap is formed. Thus, in the fire engine 10, the water intake port 321, the discharge port 322, and the relay port 323 are exposed at the openings 321a, 322a, and 323a.

Further, on the side wall 32 of the pump chamber 131, an operating device 21, which is one of the electrical components for operating the pump 20, is installed. The operating device 21 controls the opening/closing status of each ballcock of the water intake port 321, discharge port 322, and relay port 323, the pressure of the pump 20, the flow rate of the pump 20, the cumulative flow rate, the rotation speed of the pump 20, and the operating time of the pump 20. It includes a display device 211 that displays information and a push button 212 that operates the pump 20. Note that illustration of electrical components other than the operating device 21 is omitted. Further, on the right side wall 32 of the pump chamber 131, a manual operation device 33 including a pressure gauge 331 and a compound gauge 332 is installed. The manual operation device 33 is connected to the pump 20 through a circuit separate from the display device 211, so that the pump 20 can be operated even when the display device 211 is out of order.

FIG. 3 is a schematic diagram showing the arrangement of the equipment and exhaust system of the fire engine according to the embodiment from the top side. FIG. 4 is a schematic diagram showing the arrangement of the equipment and exhaust system of the fire engine according to the embodiment from the right side.

As shown in FIGS. 3 and 4, the chassis 12 is equipped with an exhaust system that processes exhaust gas generated by the engine 111. The exhaust system includes a black smoke removal device 40 and an exhaust pipe 41. A heat shield plate is installed around the black smoke removing device 40, making it difficult for the heat generated by the black smoke removing device 40 to be transmitted to the surroundings. Among the shielding plates installed around the black smoke removal device 40, the shielding plate 39 installed above the black smoke removal device 40 is installed at the boundary between the chassis 12 and the pump chamber 131. The shielding plate 39 prevents air warmed by heat generated by the exhaust system from flowing into the pump chamber 131 . Further, a heat insulating material 43 is wrapped around the exhaust pipe 41 to prevent heat from the exhaust system from being transmitted to the outside.

At least a portion of the black smoke removal device 40 is installed in a portion of the chassis 12 below the pump chamber 131. The fire engine 10 also includes a duct 50 for discharging the air inside the chassis 12 heated by the black smoke removal device 40 into the space between the cabin 11 and the body 13. Therefore, the air heated by the black smoke removal device 40 is unlikely to stay below the pump chamber 131. Further, as shown in FIG. 1, an exhaust port 51 is formed in a portion of the body 13 on the side of the black smoke removing device 40 by punching. Since the exhaust port 51 is formed in the body 13, the air heated by the black smoke removal device 40 is also exhausted to the outside of the body 13 through the exhaust port 51. Further, as shown in FIG. 3, a slit 52 is formed in a portion of the body 13 outside the pump chamber 131 and above the black smoke removal device 40, and allows the air heated by the black smoke removal device 40 to be is also discharged from the body 13 through the slit 52. Although a structure in which the slit 52 is formed in the body 13 has been described here, the slit 52 may not be provided in the body 13.

Note that the gap between the cabin 11 and the body 13 may be closed with a heat-resistant member on the side of the vehicle. By closing the gap between the cabin 11 and the body 13 with a heat-resistant member, the hot air heated by the engine 111 and the hot air discharged between the cabin 11 and the body 13 through the duct 50 are transferred to the side wall 32 of the pump chamber 131. Flowing into the pump chamber 131 via the openings 321a, 322a, and 323a can be suppressed.

A plurality of fans 60 are installed inside the pump chamber 131. The plurality of fans 60 include a first fan 60a that creates an airflow toward the rear of the vehicle, and a second fan 60b that creates an airflow toward the openings 321a, 322a, and 323a formed in the side wall 32 of the pump chamber 131. is included. The first fan 60a and the second fan 60b are installed on the top plate 38 of the pump chamber 131.

A switch for switching the operation of the first fan 60a and the second fan 60b to stop may be installed in the body 13 or in the cabin 11. Further, the on/off of the output of the power takeoff shaft 112 and the on/off of the first fan 60a and the second fan 60b may be linked. Specifically, the first fan 60a and the second fan 60b may be operated in conjunction with turning on the output of the power takeoff shaft 112, and may be stopped in conjunction with turning off the output of the power takeoff shaft 112. . By interlocking the on/off of the output of the power take-off shaft 112 with the on/off of the first fan 60a and the second fan 60b, the first fan 60a and the second fan 60b can be turned on while the pump 20 is not operating. In addition, the first fan 60a and the second fan 60b can be reliably operated while the pump 20 is in operation.

A shielding plate 37 extending downward from the top plate 38 is installed in front of the first fan 60a. Since the shielding plate 37 is installed inside the pump chamber 131, the hot air that has flowed into the pump chamber 131 through the opening 31a of the front wall 31 is prevented from being diffused into the pump chamber 131 by the first fan 60a. .

When the heat generated by the black smoke removal device 40 is transmitted to the upper shielding plate 39, the air inside the pump chamber 131 is warmed, a convection occurs inside the pump chamber 131, and the temperature near the top plate 38 of the pump chamber 131 increases. becomes higher. Air in the vicinity of the top plate 38 in the pump chamber 131 is sent backward by the first fan 60a, and further discharged to the outside of the pump chamber 131 through the openings 321a, 322a, and 323a in the side wall 32 by the second fan 60b. . In FIG. 3, the air currents generated by the first fan 60a and the second fan 60b are indicated by white arrows.

Further, a slit 36a is formed in the rear wall 36 of the pump chamber 131, and a portion of the warmed air sent rearward by the first fan 60a is discharged to the rear materials storage 133 through the slit 36a. Ru. Although a structure in which the slit 36a is formed in the rear wall 36 has been described here, the slit 36a may not be provided in the rear wall 36.

The fire engine 10 according to the embodiment includes a duct 50 for discharging air heated by the black smoke removal device 40 between the cabin 11 and the body 13 and an exhaust port 51 for discharging the air to the side. is difficult for hot air to accumulate. Furthermore, in the fire engine 10 according to the embodiment, since hot air is difficult to accumulate in the chassis 12, it is possible to suppress a rise in temperature of the body 13 including the pump chamber 131. Moreover, since the fire engine 10 according to the embodiment includes the first fan 60a and the second fan 60b in the pump chamber 131, the heat transmitted from the chassis 12 through the shielding plate 39 is transferred to the outside of the pump chamber 131. It is possible to forcibly exhaust heat to. Therefore, the fire engine 10 according to the embodiment can suppress the pump chamber 131 from becoming high temperature.

As described above, in the fire engine 10 according to the embodiment, the heat generated in the black smoke removal device 40 is discharged from the pump chamber 131 without remaining in the pump chamber 131, so that the pump chamber 131 is prevented from becoming high temperature. can. Therefore, it is possible to prevent electronic components of electrical equipment including the operating device 21 installed in the pump chamber 131 from breaking down due to high temperatures.

Note that in the above embodiment, the second fan 60b forms airflow toward the openings 321a, 322a, and 323a where the water intake port 321, the discharge port 322, and the relay port 323 are exposed; Airflow may be formed toward openings other than the openings 321a, 322a, and 323a where the relay port 322 and the relay port 323 are exposed. That is, if the second fan 60b forms an airflow toward any opening in the side wall 32, the heat transmitted from the chassis 12 through the shielding plate 39 can be discharged to the outside of the pump chamber 131.

10 Fire engine 11 Cabin 12 Chassis 13 Body 20 Pump 21 Operating device 31 Front wall 31a Opening 32 Side wall 33 Manual operating device 36 Rear wall 36a Slit 37 Shielding plate 38 Top plate 39 Shielding plate 40 Black smoke removal device 41 Exhaust pipe 43 Insulation material 50 Duct 51 Exhaust port 52 Slit 60 Fan 60a First fan 60b Second fan 111 Engine 112 Power take-off shaft 131 Pump room 132 Upper equipment storage 133 Rear equipment storage 211 Display device 212 Push button 321 Water intake port 322 Discharge port 323 Relay port 321a Opening 322a Opening 323a Opening 331 Pressure gauge 332 Compound gauge

Claims (4)

A cabin with an engine installed,
a chassis equipped with an exhaust system including a black smoke removal device that removes particulate matter from exhaust gas of the engine;
A pump to which the power of the engine is transmitted via a power take-off shaft is disposed, and a body is installed on the chassis,
The body includes a pump chamber in which the pump is installed,
An opening is provided in the side wall of the pump chamber,
At least a portion of the black smoke removal device is installed below the pump chamber,
The inside of the pump chamber is provided with a first fan that forms an airflow toward the rear, and a second fan that forms an airflow from the rear of the pump chamber toward the opening in the side wall. Fire engine. A water intake port for taking water into the pump, a discharge port for discharging water sent out from the pump, and a relay port for transmitting water to the discharge port without passing through the pump are exposed in the opening. The fire engine according to claim 1. The first fan and the second fan operate in conjunction with turning on the output of the power take-off shaft, and stop in conjunction with turning off the output of the power take-off shaft. Or the fire engine described in 2. The fire engine according to any one of claims 1 to 3, further comprising a duct that exhausts air inside the chassis heated by the black smoke removal device into a gap between the cabin and the body.

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