JPH11129907A - Cartridge type air motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small goods carrying car by reducing a weight for a motive power as much a possible to lighten a total weight so as to increase mobile power or loading much more cargoes and facilitating a continuous drive. SOLUTION: An air cartridge 11 used as an air source for breathing in a fire brigade is loaded on a hose layer 10 and the pressure of the air taken out therefrom is adjusted to a prescribed pressure in a pressure adjuster (PR) 14 and supplied to an air motor 19. The rotation output of the air motor 19 is transmitted to an axle 21 throigh a reduction gear 20 and a wheel 22 is driven. When the air in the air cartridge 11 is used up, an empty air cartridge 11 is replaced to a charged one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relatively small luggage carrier using an air cartridge. The air cartridge is a small air cylinder mainly used as an air source for human breathing, and is used, for example, in firefighting activities and diving activities.

[0002]

2. Description of the Related Art As a power source of a conventional luggage carrier, a fuel engine such as gasoline or diesel is used when a large power is required. In particular, when importance is placed on quietness and environmental protection, an electric motor engine using a battery has been used.

[0003]

[Problems to be Solved by the Invention] The recent disaster situation surrounding firefighting is the progress of science and technology,
The complexity is diversified with the arrival of motorization. Under these circumstances, firefighters who are active at disaster sites are also becoming more sophisticated, labor-saving, and lighter, such as by improving the equipment of advanced equipment. The age structure of firefighters is aging nationwide,
The decline in physical fitness of the elderly is appearing as a decline in the activities of firefighting units, and the reduction of weight, labor saving, and improvement of firefighting equipment is an immediate task facing firefighting.

[0004] A small luggage carrier called a power hose layer is used at the forefront of a fire scene. The hose layer is shaped like a simple two-wheeled rear car with tires on both sides of a metal box,
A hose connected in advance is loaded and moved from the fire engine to the fire spot, and the hose is pulled during that time. Many hose layers have no power and are used by humans pushing manually. However, two people are required to quickly move the hose layer as desired, and, as noted above, these persons must carry many equipment, such as heat resistant clothing and air cylinders.

[0005] In this way, the firefighter pushing the hose layer by hand is against rapid and safe fire fighting. For this reason, a hose layer powered by a battery and an electric motor has recently been developed. However, since the battery itself is very heavy, the loading load must be relatively small, especially for a luggage carrier, and it takes a long time to charge for the mileage (use time). There are two major drawbacks.

[0006] Specifically, the hose layer is loaded with 10 hoses each having a weight of about 6 kg.
Although it is only about 0 kg, the weight of the battery required to secure sufficient mileage and operation time is 100 kg.
It is about 150kg. In order to support such a battery and an electric motor, the structure of the vehicle body itself must be rugged. As a result, the total weight of the hose layer exceeds 250 kg in order to transport a hose of about 60 kg.
Also, if the battery is discharged at the fire site, it will be difficult for this hose layer to be operated manually, unless you bring in a charged battery and load it,
It interferes with fire fighting.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to reduce the weight for power as much as possible and reduce the total weight to increase mobility. Alternatively, it is an object of the present invention to provide a small luggage carrier capable of carrying a larger load and facilitating continuous driving.

[0008]

The cartridge-type air motor car according to the present invention, which has been made to solve the above problems, comprises: a) an air motor driven by an air flow; and b) air taken out of the air cartridge. A pressure regulator for adjusting the pressure of the air, c) air supply means for supplying the air pressure-regulated by the pressure regulator to the air motor, and d) power transmission means for transmitting the rotational driving force of the air motor to the wheels. Is provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An air motor is fixed to a vehicle body, and power transmission means is arranged between the air motor and wheels. Further, an air cartridge is mounted on a predetermined portion of the vehicle body, and an air flow path and a pressure regulator are provided between a base (air outlet) of the air cartridge and an air inlet of the air motor.

When the pressure regulator is adjusted in accordance with the operating air pressure of the air motor and the valve of the air cartridge is opened, the air motor operates and the air motor car moves.

[0011] In some applications, the air motor car only needs to move forward. When reversing is also necessary, a forward / reverse switching means such as a gear box may be provided in the power transmission means, or a forward / reverse air motor having a forward / reverse air inlet and a forward / reverse air inlet is used. You may. In this case, a flow path switching valve for switching the supply of air from the air cartridge to the forward air inlet or the reverse air inlet is provided.

As described above, the air cartridge is a small air cylinder used for firefighting activities and the like, and is standardized in several types and commercially available. In the case where toxic gas is expected to be generated, for example, a firefighter wears an air mask and carries out an extinguishing activity by carrying an air cartridge. Therefore, many air cartridges are always prepared at a fire extinguishing site. Therefore, the air cartridge type motor car according to the present invention can be suitably used especially as a hose layer.

[0013]

An example in which the present invention is applied to a fire hose layer will be described. The basic configuration of the hose layer 10 according to the present embodiment is as shown in FIG. 1. An air motor 19 is connected to a replaceable air cartridge 11 via a pressure regulator (PR) 14 and a switching valve 15. The rotational power of the motor 19 is transmitted to the axle 21 via the speed reducer 20.

More specifically, as shown in FIG. 2, the hose layer 10 of the present embodiment includes a chassis (not shown).
The air motor 19 and the loading platform 23 are placed on the top, and the axle 21 is attached. Wheels 22 are attached to both ends of the axle 21. The loading platform 23 is provided with a hose reel 25 for winding and unwinding a hose 24, as well as a device for mounting and fixing the air cartridge 11 thereon. . Note that a plurality of air cartridges 11 may be mounted on one hose layer 10. A handle 26 is fixed to the carrier 23, and the switching valve 15 is fixed outside the carrier near the handle 26.

The air cartridge 11 has a capacity of 8 liters or 4 liters and a filling pressure of 150 atm or 300 atm, which is generally used in firefighting. For example, the ALT series manufactured by ULTRESSA can be used. The mouthpiece of such a commercially available air cartridge 11 is provided with an on-off valve 12 and a pressure gauge 13 for indicating the internal capacity.

As the air motor 19, a commercially available one for general power can be used. The total weight of the body of the hose layer 10 including the hose 24, the air motor 19, the air cartridge 11 and the like is about 150 to 200 kg. In order to run the hose at a speed of about 5 to 10 km / h, 50 kg is required. An output of about 200 W is required. In addition, since the rotation speed of the air motor is generally very high, in order to make the hose layer 10 run at such a speed, a speed reducer ( It is desirable to use a (built-in) air motor 19.

An air motor 19 that can rotate in both forward and reverse directions is used. Air passages 17 and 18 are connected to the forward rotation air inlet and the reverse rotation air inlet from the switching valve 15 respectively.

As such an air motor, for example, a radial piston type air motor TAM4 series manufactured by Taiyo Tekko Co., Ltd. can be used.

When using the hose layer 10, first, the lever 16 of the switching valve 15 is set to the neutral position to shut off the air passage to the air motor 19, and the open / close valve of the air cartridge 11 is opened. The air pressure is adjusted by the adjuster 14 so that the air pressure becomes the rated pressure of the air motor 19. Then, when it is desired to advance the hose layer 10, the lever 16 of the switching valve 15 is raised and air is supplied to the air motor 19 from the forward rotation port. To retreat, the lever 16 is lowered, and air is supplied to the air motor 19 from the reversing port. To stop, the lever 16 is set to the neutral position.

Using two air cartridges 11 having a capacity of 8 liters and a pressure of 150 atm, an operating pressure of 5 kg / cm ² and an output of 2
When the 00W air motor 19 is used, traveling for about 20 minutes is possible.

In order to further enhance the mobility,
A speed reducer 20 having a variable reduction ratio is used.
Alternatively, a brake may be provided on the wheel 22.

[0022]

According to the air cartridge type motor car according to the present invention, since the air cartridge is used as a power source, the entire vehicle body can be reduced in weight, or a relatively large load capacity can be taken. In addition, the air cartridge can be easily refilled with air if only a compressor is provided, and the weight is at most about several kilograms, and it is easy to carry. Therefore, by preparing a spare air cartridge in advance, if the air in the air cartridge runs out during use, the air cartridge can be replaced to replace the air cartridge and use can be resumed immediately.

The cartridge type air motor car according to the present invention having the above-mentioned features can be used not only for the fire hose layer described above but also for a conventional battery such as a transport vehicle in a fish market or a vegetable market or a transport vehicle in a factory building. It can be used in place of most of the small luggage carriers used.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of a hose layer according to one embodiment of the present invention.

FIG. 2 is a side view of the hose layer of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hose layer 11 ... Air cartridge 12 ... On-off valve 13 ... Pressure gauge 14 ... Pressure regulator 15 ... Switching valve 16 ... Switching lever 17, 18 ... Air flow path 19 ... Air motor 20 ... Reduction gear 21 ... Axle 22 ... Wheel 23 ... loading platform 24 ... hose 25 ... hose reel 26 ... handle

Claims (3)

[Claims] A) an air motor driven by an air flow; b) a pressure regulator for regulating the pressure of the air taken out of the air cartridge; c) the air regulated by the pressure regulator to the air motor. A cartridge type air motor car comprising: an air supply unit for supplying; and d) a power transmission unit for transmitting a rotational driving force of an air motor to wheels. 2. The air motor according to claim 1, wherein said air motor is rotatable forward and backward, and further comprises a flow path switching valve for switching an air flow taken out of the air cartridge to a forward air inlet and a reverse air inlet of the air motor. The cartridge type air motor car according to 1. 3. A fire hose layer using the cartridge type air motor car according to claim 1.