JPH0872603A - Drainage pump vehicle - Google Patents

Abstract

PURPOSE: To prevent lowering of pump efficiency of a drainage pump caused by continuation of drain operation by lowering the oil temperature in an oil pressure piping by water cooling. CONSTITUTION: A cooling room 12 formed by a metallic box where many through holes 12a, 12a... are formed is provided on the lower surface of the central part of an amphibious vehicle 1 which has a boat-form closed body 2 and can travel on the poor ground, and oil pressure pipings 11A, 11B are partially interposed in the cooling room 12. In this arrangement, water is circulated from many through holes 12a, 12a... into the cooling room, whereby the partial oil pressure pipings 11A, 11B are cooled by circulating water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to emergency drainage at the time of water disaster,
The present invention relates to a drainage pump vehicle used for drainage of civil engineering temporary construction work or water supply and drainage for agriculture.

[0002]

2. Description of the Related Art Conventionally, as a drainage pump vehicle used for emergency drainage in the event of a water disaster, temporary construction work drainage, agricultural water supply / drainage, etc., a crane used for loading and unloading on-board equipment such as pumps. , A plurality of drainage pumps (submersible pumps) and a drainage pump with floats, a private power generator that supplies power to the drive sources (motors) of these drainage pumps, their operation panel, and drainage ports of each drainage pump. The drain hose to be connected, the cavern tire cable that electrically connects the drive source of each drain pump and the operation panel of the private power generator, the main floodlight for night work, the auxiliary floodlight for spot lighting, and power to this auxiliary floodlight. There is something that is equipped with equipment such as a portable power generator. According to this type of drainage pump vehicle, if it reaches the water level of the drainage or water supply / drainage site by self-propelled, after connecting the drainage hose and the connection of the tire cable, the drainage pump is driven by the crane. Water is drained by operating the drain pump by supplying electric power to the drive source of the drain pump by operating the private power generator.

However, in the conventional drainage pump car, when the ground at the drainage or water supply / drainage site and its surroundings is hard, the drainage pump car can be self-propelled to the water's edge, but if the ground is weak, it reaches the water's edge. I can't make it self-propelled. Therefore, the stop position of the drainage pump car is restricted to a place relatively remote from the water's edge. For that purpose, various works such as the work of transporting the drainage pump with a float that has been unloaded from the cargo bed by the crane to the water's edge, the work of installing the drainage pump from the water's edge to the water, and the work of connecting and connecting the tire tire cable are performed manually. There must be. In other words, the work of transporting the drainage pump unloaded from the crane by the crane to the waterside by the hand cart, the construction of the inclined guideboard at the waterside, and the work of laying the drainage pump underwater using the constructed inclined guideboard. Many tasks must be performed by many workers. Moreover, since these operations are extremely troublesome and difficult, the workability is poor and the quick start of drainage after reaching the drainage or water supply / drainage site is hindered. In addition, since it requires a private power generator and operation panel for operating the drainage pump,
It has a disadvantage that it is economically disadvantageous because the equipment is large.

Therefore, the applicant of the present invention has filed Japanese Patent Application No. 4-33.
In No. 269, even if the drainage or water supply / drainage site and the ground around it are soft, they can be self-propelled to the water's edge, and the operation of lowering the amphibious vehicle from the carrier bed of the transport vehicle, from the lowered position to the water's edge Operation to move by running, operation to launch amphibious vehicle from the water's edge and move it to the water depth area where drainage pump can operate, operation to drain amphibious vehicle after stopping amphibious vehicle in this water depth area, drainage Operation to stop the operation of the drainage pump after completion,
A series of operations such as an operation for returning an amphibious vehicle to the water's edge and an operation for moving it from here to a transportation vehicle and placing it on a cargo bed can be configured to be performed by remote control, which improves workability. Proposing a pump car. That is, this drainage pump vehicle receives a radio signal transmitted from a steering transmitter by a receiving device mounted on an amphibious vehicle, and from the receiving device, an engine and a hydraulic pump mounted on the amphibious vehicle and a switching device. It is configured to output a control signal to a valve or the like.

By the way, in this type of drainage pump vehicle, the output of the engine is maximized during the drainage operation, and the temperature (oil temperature) of the working oil circulating in the hydraulic piping is the highest. However, since the drainage operation is performed with the drainage pump car floating on the water surface and stopped, the effect of lowering the oil temperature by air cooling cannot be expected. Therefore, there is a possibility that the pump efficiency of the drainage pump may be reduced by continuing the drainage operation.

[0006]

The problem to be solved is that since the oil temperature cannot be expected to decrease due to air cooling during drainage operation, there is a risk that the pump efficiency of the drainage pump will decrease when drainage operation is continued. That is the point.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides an amphibious vehicle having a boat-type sealed body capable of running on soft ground, an engine, a hydraulic pump driven by the engine, and a drainage pump driven by the hydraulic pump. A radio signal transmitted from a steering transmitter is received by a receiving device mounted on an amphibious vehicle, and a control signal is output from the receiving device to the engine, the hydraulic pump, and the switching valve. In a drainage pump vehicle configured to allow remote control of start / stop, engine speed, and traveling direction of an amphibious vehicle, a cooling chamber in which water circulates is provided in an appropriate place of the amphibious vehicle that is submerged during drainage operation. It is characterized in that part of the hydraulic piping is internally cooled so that the oil temperature can be lowered by water cooling to reduce the pump efficiency of the drainage pump due to continuous drainage operation. To achieve the avoidance purposes.

[0008]

According to the present invention, even when drainage operation is performed with the drainage pump car floating above the water surface and stopped, a part of the hydraulic pipe is cooled by the circulating water in the cooling chamber to effectively maintain the oil temperature. Can be lowered.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing an example of a drainage pump vehicle to which the present invention is applied, FIG. 2 is a schematic front view, and FIG. 3 is a configuration diagram showing an example of a vehicle drive system and a drainage pump drive system. The drainage pump vehicle is composed of an amphibious vehicle 1, a boat-shaped closed body 2, and a crawler vehicle having a pair of left and right crawlers 3A and 3B capable of running on soft ground. The closed body 2 includes an engine 4, two drainage pumps 5A and 5B, two hydraulic pumps 6A and 6B operated by the engine 4, and a receiving antenna 10A.
The receiving device 10 equipped with the above is mounted, and by switching the electromagnetic or electric switching valve 7A, the traveling motor 8A or the drainage pump driving motor is switched from the hydraulic pump 6A.
The hydraulic pump 6B drives the traveling motor 8B or the drainage pump drive motor by switching the electromagnetic or electric switching valve 7B by supplying pressure oil to the motor 9A to operate it.
The pressure oil is supplied to the actuator 9B for operation.

The hydraulic pumps 6A, 6B and 6C are the engine 4
Are directly connected to each other and are of a variable capacity type bidirectional flow, and the oil flow direction and the amount of discharged oil are adjusted by a regulator. The output shaft of the running motor 8A is
It is connected to the drive side wheel of one of the crawlers 3A, and the output shaft of the traveling motor 8B is connected to the drive side wheel of the other crawler 3B. And the switching valves 7A, 7B
The receiving device 10 receives a radio signal transmitted from the control transmitter 13 for switching control, control of the operation / stop and rotation speed of the engine 4, and control of the oil flow direction and discharge amount of the hydraulic pumps 6A and 6B. Then, the receiving device 10 outputs a control signal to the engine 4, the hydraulic pumps 6A and 6B, and the switching valves 7A and 7B so that the remote control can be performed.

Hydraulic pumps 6A, 6B and switching valves 7A, 7B
Communicate with each other through the hydraulic pipes 11A and 11B, and the switching valve 7
A, 7B and traveling motors 8A, 8B are hydraulic pipes 11C,
The switching valves 7A, 7B and the drain pump driving motors 9A, 9B communicate with each other via the hydraulic pipes 11E, 11F. On the other hand, a cooling chamber 12 is provided on the lower surface of the central portion of the boat-shaped hermetically sealed body 2. That is, the cooling chamber 12 is provided in the amphibious vehicle 1 that is submerged during the drainage operation. As shown in FIG. 4, the cooling chamber 12 is composed of a metal box having a large number of through holes 12a, 12a, ... And is mounted on a mounting seat 14 provided on the lower surface of the central portion of the boat-shaped hermetic body 2. On the other hand, they are fastened by a plurality of bolts 15 and 15, and a part of the hydraulic pipes 11A and 11B are installed. That is, in order to enhance the cooling effect, a part of the hydraulic pipes 11A and 11B is bent in a meandering shape and is internally provided. Of course, fins may be provided to further enhance the cooling effect.

With such a construction, even if the drainage pump truck is floated above the water surface WL and is drained, the cooling chamber 12 is submerged in water.
Water circulates in the cooling chamber 12 through a, 12a, ...
The circulating water can cool a part of the hydraulic pipes 11A and 11B to effectively reduce the oil temperature. Therefore, even if the drainage operation is continued, the pump efficiency of the drainage pumps 5A and 5B does not decrease.

In the above-mentioned embodiment, the system in which the water is naturally circulated in the cooling chamber 12 is described. However, as shown in FIG. 5, a part of the water discharged from the drainage pumps 5A and 5B is partially cooled.
You may comprise so that it may cool by the forced circulation system introduce | transduced in 2. With this configuration, the cooling effect can be further enhanced. Also, the hydraulic pipes 11A, 11
Instead of a part of B, part of the hydraulic pipes 11E and 11F or hydraulic pipes 11G and 11H may be installed in the cooling chamber 12.

[0014]

As described above, according to the present invention, even if drainage operation is performed with the drainage pump car floating on the water surface and stopped, a part of the hydraulic pipe is cooled by the circulating water in the cooling chamber. Since the oil temperature can be effectively reduced, the pump efficiency of the drainage pump does not decrease even if the drainage operation is continued.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an example of a drainage pump vehicle to which the present invention is applied.

FIG. 2 is a partial front view of FIG.

FIG. 3 is a configuration diagram showing an example of a vehicle drive system and a drainage pump drive system.

FIG. 4 is an enlarged cross-sectional view of a main part.

FIG. 5 is a configuration diagram of a modified example.

[Explanation of symbols]

 1 Amphibious vehicle 2 Boat type closed body 4 Engine 5A, 5B Drainage pump 6A, 6B Hydraulic pump 7A, 7B, 7C Switching valve 10 Receiver 11A Hydraulic pipe 11B Hydraulic pipe 11E Hydraulic pipe 11F Hydraulic pipe

Claims (1)

[Claims] 1. A maneuvering transmitter equipped with an engine, a hydraulic pump driven by the engine, and a drainage pump driven by the hydraulic pump in an amphibious vehicle capable of running on soft ground having a boat-shaped closed body. The receiving device mounted on the amphibious vehicle receives a radio signal transmitted from the receiving device, and outputs a control signal from the receiving device to the engine, the hydraulic pump, and the switching valve to start / stop the engine, rotate the engine, In a drainage pump vehicle configured to remotely control the traveling direction of an amphibious vehicle, a cooling chamber in which water circulates is provided in an appropriate place of the amphibious vehicle that is submerged during drainage operation, and a part of hydraulic pipe is cooled in this cooling chamber. A drainage pump car characterized by being installed as much as possible.