JPH05229323A - Drainage pump vehicle - Google Patents

Abstract

PURPOSE:To avoid any interference between the lower end of a moving suction strainer at the time of movements of an amphibian vehicle and a road surface or a water bottom as well as to reduce the quantity of residual water in lowering a drain operable water level by installing this liftable moving suction strainer in a drainage pump. CONSTITUTION:A lifting mechanism 7 is operated, and a lower end of a moving suction strainer 5S is lifted up to height of more than the minimum ground clearance (h) in advance. With this operation, any interference between the lower end of the strainer 5S at the time of running of drainage pump cars 5A, 5B on the ground or water bottom and a road surface or water bottom, is avoidable. In addition, the moving suction strainer 5S is lowered up to a lower position than each lower end level of the drainage pumps 5A, 5B. With this constitution, the drain operable water level of the pumps 5A, 5B can be lowered as much as a portion for the lowered size, thus the quantity of residual water becomes lessened for that.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to emergency drainage in the event of a 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 car used for emergency drainage at the time of water disaster, drainage for temporary construction work or water supply / drainage for agriculture, a crane used for loading and unloading equipment such as pumps on a truck. , 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 cab 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 this auxiliary floodlight. There are those equipped with equipment such as portable floodlights. According to this type of drainage pump car, when it reaches the water level of the drainage or water supply / drainage site by self-propelled, the drainage pump (for example, a drainage pump with a float) to which the cable is connected by crane is After laying in water and connecting a drain hose to the drain port, power is supplied to the drive source of the drain pump by the operation of the private power generator, and the drain pump is operated to drain the water.

By the way, in the conventional drainage pump vehicle,
If the ground at the drainage or water supply / drainage site and its surroundings is hard, the drainage pump car can be driven to the water's edge, but if the ground is soft, it cannot be driven to the water's edge. 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 operations 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 laying 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. Further, since a private power generator for operating the drainage pump and an operation panel are required, the facility becomes large in scale, which is disadvantageous economically.

Therefore, an amphibious vehicle is constituted by a crawler vehicle having a boat-type closed body, and an engine, a drainage pump, a hydraulic pump operated by the engine, and a hydraulic pressure for transmitting power to the vehicle traveling system are constructed in the amphibious vehicle. It is conceivable to perform drainage by a drainage pump vehicle having a structure equipped with a hydraulic motor that transmits power to the motor and the drainage pump. In such a drainage pump car, even if the ground is considerably soft, it can be moved to the water's edge and launched from there. Further, since the amphibious vehicle can be propelled while the surface of the water is floating by the rotation of the crawler protrusion, the workability is greatly improved. Moreover, it is possible to remotely control the operation / stop of the engine, the operation / stop of the vehicle, the traveling direction of the vehicle, the operation / stop of the drainage pump, etc. by a wireless signal transmitted from the control device, which is safe. .

However, in this type of crawler car,
In order to avoid interference between the underside of the vehicle body and the road surface when traveling on land, it is necessary to secure a minimum ground height of at least 250 to 300 mm, so the lower end of the suction strainer attached to the drainage pump. Must be installed at a level above the minimum ground clearance. for that reason,
The installation height of the drainage pump becomes higher, and the level of water that can be operated for drainage (the level of water that can be operated for drainage without sucking vortices) becomes higher, and it is not possible to drain to a low water level, resulting in an inconvenience that the amount of residual water increases. become.

The problem to be solved is to drain an amphibious vehicle composed of a crawler vehicle capable of self-propelled to the water's edge even if the drainage or water supply / drainage site and the ground around it are weak. If a pump is installed to perform drainage, the lower end of the suction strainer attached to the drainage pump must be set to a level above the minimum ground clearance, so the installation height of the drainage pump is high. This is the point at which the drainable water level becomes higher and the amount of residual water increases.

[0006]

According to the present invention, a self-propelled amphibious vehicle is provided with a penetrating portion in a boat-shaped hermetically sealed body, and a drainage pump is inserted into the penetrating portion in a downward posture to form the boat-shaped hermetically sealed body. The drain pump is provided with a movable suction strainer that can be moved up and down, and the movable suction strainer is supported by an elevating mechanism, and the penetrating portion and the movable suction strainer can be expanded and contracted. It is characterized in that the inside of the boat-shaped hermetically sealed body is shielded from the outside by being connected to each other by a water sealing member.

[0007]

According to the present invention, by operating the elevating mechanism and raising the lower end of the movable suction strainer to a height above the minimum ground level, the drainage pump vehicle can be run on land or at the bottom of the water. It is possible to avoid the interference between the lower end of the movable suction strainer and the road surface or the water bottom. Also,
By lowering the movable suction strainer and lowering it from the lower end level of the drainage pump, the drainable water level of the drainage pump can be lowered by the lowered dimension,
The amount of residual water decreases accordingly. In addition, the expandable water-sealing member that connects the penetrating part formed in the boat-shaped hermetically sealed body and the movable suction strainer to each other shuts off the inside of the ship-shaped hermetically sealed body from the outside, so that the penetrating part is passed through. It is possible to surely prevent the occurrence of inconvenience of water intruding into the boat-shaped hermetically sealed body, and to exert this water sealing function by following up and down movements of the movable suction strainer.

[0008]

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, and FIG. 2 is an enlarged cross-sectional view showing an example of a drainage pump installation structure. In these figures, 1 is an amphibious vehicle. , Boat-shaped closed body 2 and a pair of left and right black
It is composed of a crawler vehicle provided with the rotors 3A and 3B, and the boat-type closed body 2 is equipped with the engine 4 and the drainage pumps 5A and 5B provided with the movable suction strainer 5S. The pair of left and right rollers 3A, 3B rotate in the forward and reverse directions by hydraulic drive using the engine 4 as a drive source, and the drainage pumps 5A, 5B can also be operated by hydraulic drive using the engine 4 as a drive source. There is. The bottom portion 2A of the boat-shaped closed body 2 has the same number of penetrating portions 6 (two in the illustrated example) as the number of drainage pumps 5A and 5B (however, only one penetrating portion 6 is shown in the drawing). The drainage pumps 5A and 5B are inserted into the respective penetrating portions 6 in a downward posture, and are supported by the boat-shaped hermetically sealed body 2 via the support members 13. The movable suction strainer 5S includes a lower water passage portion 5S1 formed by a water passage member such as a wire mesh or a punching metal formed by punching a steel plate, and a lower water passage portion 5S1 formed by a tubular steel plate. It is a bottomed tubular shape including an upper water-impermeable portion 5S2 that is continuously provided. The upper end flange portion of the upper water-impermeable portion 5S2 is supported by the lifting mechanism 7, and the penetrating portion 6 and the upper water-impermeable portion 5S2 are supported. The upper surface of the upper flange portion of the upper non-water-passing portion 5S2 is expanded and contracted by connecting the lower surface of the upper end flange portion of the upper and lower surfaces of the upper water impermeable portion 5S2 to each other by a water seal member 8A made of, for example, a rubber bellows. The inside of the boat-shaped hermetically sealed body 2 is shielded from the outside by being freely connected to each other by a water sealing member 8B made of, for example, a rubber bellows. That is, the penetrating portion 6, the movable suction strainer 5S, and the drainage pumps 5A, 5
The water is not allowed to enter the boat-shaped closed body 2 through the space between B. The up-and-down control of the movable suction strainer 5S is performed, for example, by the control method described below. That is, inside the boat-shaped hermetically-sealed body 2, a measuring means 9 composed of, for example, an ultrasonic interface level meter is arranged, and the detection end 9A of the measuring means 9 is placed at the bottom 2 of the boat-shaped hermetically-sealed body 2.
It is made to project downward in a watertight manner from A, and the distance h1 to the ground surface is detected by ultrasonic wave transmission from here. In addition, the elevating mechanism 7 is operated by the operation signal output from the control means 10, and the control means 10 operates based on the distance h1 from the lower ends of the drainage pumps 5A and 5B detected by the measurement means 9 to the ground surface (water bottom). The operation signal is output to the lifting mechanism 7, and the movable suction strainer 5
S is lowered within the measurement distance h1, and the operation / stop of the engine 4 and the pair of left and right crawlers 3 are performed.
The drive of A and 3B and the drive of the drainage pumps 5A and 5B are also performed by outputting an operation signal from the control means 10.

The lifting mechanism 7 is driven by hydraulic drive using the engine 4 as a drive source. The lifting mechanism 7 includes a left-right unit 1 that is swingably installed on a bottom portion 2A of a boat-shaped closed body 2.
It is composed of a pair of upward cylinders 7A and a piston rod 7B connected to a piston that moves up and down by a high-pressure fluid supplied to the cylinder 7A, and the upper end portion of the piston rod 7B is an upper portion of the movable suction strainer 5S. It is connected to the upper end flange portion of the water passage portion 5S2. Therefore, the lifting motion of the lifting mechanism 7 causes the strain
Na 5S moves up and down.

Next, the operation of the above configuration will be described. First, as shown in FIG. 3, the amphibious vehicle 1 loaded on the bed of the transportation vehicle 11 such as a truck is transported to the vicinity of the drainage or water supply / drainage site. When the vehicle arrives near the site, the amphibious vehicle 1 is moved straight forward and backward by the self-propelled vehicle using the inclined guide table 12 as a guide, and is removed from the loading platform of the transport vehicle 11. After that, the amphibious vehicle 1 self-propels and advances to the water's edge. Here, a drain hose (not shown) is connected to the discharge ports of the drain pumps 5A and 5B. Subsequently, the amphibious vehicle 1 is self-propelled forward and launched by the same operation as described above to move on the bottom of the water to the water depth region shown in FIG. When the amphibious vehicle 1 has moved to a predetermined depth, the amphibious vehicle 1 is stopped, and then the drainage pumps 5A and 5B are activated to start draining. Also, by moving to a deep water area, the amphibious vehicle 1 floats on the surface of the water, and the crawlers 3A,
By continuing the forward rotation of 3B, the crawler 3
The crawler protrusions 3a and 3b projectingly provided on the A and 3B can be rotated to obtain thrust for advancing the amphibious vehicle 1. Of course, the drainage pumps 5A, 5
It is also possible to activate B for draining. After the drainage is completed, the operation of the drainage pumps 5A and 5B is stopped, and then the amphibious vehicle 1 is returned to the water's edge. Here, the vehicle is once stopped and the drain hose is removed from the discharge ports of the drain pumps 5A and 5B. After removing the drain hose, the transportation vehicle 1 shown in FIG.
1 self-propelled and guided vehicle 12 with tilt guide 12
The work is completed by placing it on the loading platform of No. 1, and prepares for the next drainage or water supply / drainage.

In a series of basic work patterns of the amphibious vehicle 1 as described above, during the ascending / descending movement with the tilt guide 12 as a guide, during the reciprocating movement between the transportation vehicle 11 and the waterfront, and FIG. When moving the water bottom to the depth of water, the lifting mechanism 7
Is operated to raise the lower end of the movable suction strainer 5S to a height above the minimum ground height h. As a result, it is possible to avoid the interference between the lower end of the movable suction strainer 5S and the road surface or the water bottom when the amphibious vehicle 1 moves. Also, during drainage operation, the movable suction strainer 5
S is lowered by the lifting mechanism 7 as shown by the phantom line in FIG. As a result, the height of the drainage operable water level LWL is, as indicated by H1, higher than the height H of the drainage operable water level LWL before lowering the strainer 5S.
Dimension H where S2 is lower than the lower ends of drainage pumps 5A and 5B
The amount of residual water can be reduced by decreasing the amount of D.
Further, a retractable water seal member 8A and a movable suction strainer 5 are formed by connecting a penetrating portion 6 formed on the bottom portion 2A of the boat-shaped closed body 2 and a movable suction strainer 5S to each other.
Since the inside of the boat-shaped hermetically sealed body 2 is shielded from the outside by the expandable and contractible water-sealing member 8B in which the S and the support member 13 are connected to each other, the inconvenience of inundation of water into the boat-shaped hermetically sealed body 2 is reliably prevented. At the same time, this water sealing function can be exerted by following up and down movements of the drainage pumps 5A and 5B.

As the movable suction strainer 5S, as shown in FIG. 4, the outer diameter of the lower water passage portion 5S1 is made larger than that of the upper water passage portion 5S2, and the lower water passage portion 5S1 is made larger.
The height of the movable suction strainer 5S used in the above embodiment may be lower than that of the lower water passage portion 5S1. By using the movable suction strainer 5S having such a structure, the water passage area of the lower water passage portion 5S1 is increased and the height of the drainage operable water level LWL is higher than that of the drainage operable water level H1 described above. The amount of residual water can be further reduced by lowering to a lower H2 level. Also, as shown in FIG. 5, a plurality (for example, two)
The movable suction strainer 5S may be integrally formed.

[0013]

As described above, according to the present invention,
Even if the ground at the drainage or water supply / drainage site and its surroundings is soft, even if the drainage pump is installed in an amphibious vehicle that is composed of a crawler vehicle that can self-run to the water's edge, It is possible to avoid the interference between the lower end of the movable suction strainer and the road surface or water bottom during movement, and to lower the drainable water level that allows drainage operation without sucking vortices to reduce the amount of residual water. In addition, the expandable water seal member shuts off the inside of the boat body from the outside to reliably prevent the inconvenience of inundation of water into the boat body through the penetrating portion, and this water seal function is provided by a movable suction strainer. It has the advantage that it can be exercised by following up and down movements of

[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 an enlarged cross-sectional view showing an example of a main part.

FIG. 3 is a schematic side view showing a state in which an amphibious vehicle is loaded on a bed of a transportation vehicle.

FIG. 4 is an enlarged cross-sectional view showing a modified example of the movable suction strainer.

FIG. 5 is an enlarged cross-sectional view showing another modified example of the movable suction strainer.

[Explanation of symbols]

 1 Amphibious vehicle 2 Boat type closed body 5A, 5B Drain pump 5S Movable suction strainer 6 Penetration part 7 Lifting mechanism 8 Water sealing member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masuhito Takahashi 1-1-1, Nakanomiya Oike, Hirakata City, Osaka Prefecture Kubota Hirakata Factory

Claims (1)

[Claims] 1. A self-propelled amphibious vehicle is provided with a penetrating portion in a boat-shaped hermetically sealed body, and a drainage pump is inserted into the penetrating portion in a downward posture to be supported by the boat-shaped hermetically sealed body and lifted up and down by the drainage pump. A possible movable suction strainer is provided, and this movable suction strainer is supported by an elevating mechanism,
A drainage pump vehicle characterized in that the penetrating portion and the movable suction strainer are connected to each other by a stretchable water sealing member to shut off the inside of the boat-shaped hermetically sealed body from the outside.