JP2998048B2 - Drainage pump truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an emergency drainage system in the event of a water disaster,
The present invention relates to a drainage pump truck used for drainage in civil engineering temporary works or agricultural water supply and drainage.

[0002]

2. Description of the Related Art Conventionally, as a drainage pump truck used for emergency drainage in the event of a water disaster, civil engineering temporary construction drainage, or agricultural water drainage, a truck used for loading and unloading equipment such as a pump on a truck. , Multiple drain pumps (submersible pumps) and drain pumps with floats, private power generators that supply power to the drive sources (motors) for these drain pumps, their operation panels, and drain outlets for each drain pump A drain hose to be connected, a cable for electrically connecting a drive source of each drain pump to an operation panel of the private power generator, a main floodlight for night work, an auxiliary floodlight for spot lighting, and power to the auxiliary floodlight. Some devices are equipped with devices such as a general-purpose floodlight that supplies the light. According to this type of drainage pump truck, when the vehicle arrives at the edge of the drainage or water supply / drainage site by self-propelled operation, a drainage pump connected to a cable (for example, a drainage pump with a float) is crane-mounted. After the cable is laid in water and a drain hose is connected to the drain, power is supplied to the drive source of the drain pump by the operation of the private power generator, and the drain is driven by operating the drain pump.

[0003] By the way, in the conventional drainage pump truck,
If the ground at the drainage or plumbing site and the surrounding area is hard, the drainage pump truck can run to the shore, but if the ground is soft, it cannot run to the shore. Therefore, the stop position of the drainage pump truck is restricted to a location relatively remote from the waterside. For this purpose, various tasks such as transporting the drainage pump with the float unloaded from the bed by the crane to the shore, laying the drainage pump from the shore to the water, and transporting and connecting the cab tire cable are performed manually. There must be. In other words, the work of transporting the drainage pump unloaded from the bed by the crane to the shore by a hand truck, the construction of an inclined guide at the shore, and the work of laying the drainage pump underwater using the constructed inclined guide And other operations must be performed by many workers.
In addition, since these operations are extremely troublesome and difficult, the workability is poor and the rapid start of drainage after reaching the drainage or plumbing site is prevented. Further, since a private power generator and an operation panel for operating the drainage pump are required, the equipment becomes large-sized, and has a disadvantage that it is economically disadvantageous.

[0004] Therefore, a rope having a boat- shaped hermetic body has been proposed.
An amphibious vehicle is constituted by the vehicle, an engine, a drain pump, a hydraulic pump operated by the engine, and a hydraulic motor for transmitting power to a vehicle traveling system.
It is conceivable to perform drainage by a drainage pump truck having a structure equipped with a hydraulic motor for transmitting power to a motor and a drainage pump. In such a drainage pump truck, even if the ground is considerably soft, it can be moved to the shore and launched there. Further, the amphibious vehicle can be propelled while floating on the water surface by the rotation of the crawler projection, so that the workability is greatly improved. In addition, the operation / stop of the engine,
It is possible to remotely control the operation / stop of the vehicle, the traveling direction of the vehicle, and the operation / stop of the drain pump, so that it is safe.

However, in a crawler type amphibious vehicle,
When traveling on land, it is necessary to secure a minimum ground height of at least 250 to 300 mm in order to avoid interference between the underside of the vehicle and the road surface. Must be installed at the level. For this reason, the drainable water level (the water level at which the drainage operation can be performed without sucking the vortex) becomes high, and the drainage operation cannot be performed to a low water level, resulting in an inconvenience of increasing the remaining water amount.

The problem to be solved is that even if the drainage or water supply / drainage site and the surrounding ground are soft, the drainage to an amphibious vehicle constituted by a crawler vehicle capable of self-running to the water's edge. If a pump is installed to drain water, the lower end of the drain pump must be set to a level higher than the minimum ground level, so the installation height of the drain pump will be higher, and the drainable water level will be higher accordingly. That is, the amount of remaining water increases.

[0006]

The present invention SUMMARY OF] The drainage pump for a boat-sealing body to Bei example soft weak soil a can travel amphibious vehicles, and free-running engine, the drainage of the boat-sealing body outside A drain pump car equipped with
Drive a variable displacement hydraulic pump
A hydraulic circuit as a power source is operated by a drive unit of the amphibious vehicle.
Vehicle driving power through a first hydraulic motor for transmitting power
A hydraulic circuit for driving a vehicle constituting a transmission system;
Via a second hydraulic motor that transmits power to the drive unit of the pump
Drain pump operation constituting the power transmission system for drain pump operation
And a hydraulic circuit for
A switching valve that opens and closes both hydraulic circuits alternately is provided .
A control signal based on the water level detected by the water level gauge during the drainage operation of the drainage pump is transmitted to a power transmission for drainage pump operation.
A control device is provided for adjusting the discharge amount of the drainage pump by outputting to the variable displacement hydraulic pump serving as a drive source of the feed system and changing the tilt angle thereof .

[0007]

According to the present invention, by setting the lower end of the drain pump at a height equal to or higher than the minimum ground height and mounting the same, it is possible to avoid interference with the road surface or the water bottom when the drain pump vehicle travels on land or under the water. Can be. Further, at the time of drainage operation of the drainage pump, the drive source of the power transmission system for drainage pump operation is based on the water level detected by the water level gauge.
Output to a variable displacement hydraulic pump to change its tilt angle.
This controls the discharge rate of the drainage pump. That is, in the high water level area by driving the variable displacement hydraulic pump with high output, by high speed rotation of the drainage pump, perform rapid drainage by increasing the discharge amount, the variable capacitance form oil at medium level region
By operating the pressure pump at intermediate output and rotating the drainage pump at medium speed, the discharge rate is slightly reduced and drainage is performed.
Furthermore, by operating the variable displacement hydraulic pump at low output in the low water level region and rotating the drainage pump at low speed,
Drainage is performed with the discharge amount further reduced. As a result, the operable drainage water level can be lowered. That is, the drainage operation is performed to a low water level without sucking the vortex, and the amount of remaining water can be reduced.

[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 truck to which the present invention is applied, FIG. 2 is an enlarged sectional view showing an example of an installation structure of the drainage pump, and FIG. 3 is a power transmission system for driving a vehicle and a drainage pump. 1 is a schematic system diagram of a driving power transmission system. In these figures, reference numeral 1 denotes an amphibious vehicle;
And a pair of left and right crawler trucks 3A and 3B. The boat-type body 2 includes a self-propelled engine 4, drain pumps 5A and 5B, and an engine. A variable displacement hydraulic pump 6 operated by the pump 4 and a hydraulic circuit 7 driven by the variable displacement hydraulic pump 6 are mounted in a watertight manner. The same number (two in the illustrated example) of through-holes 8 as the number of drainage pumps 5A and 5B are provided on the bottom 2A of the boat-shaped closed body 2.
(However, only one penetration portion 8 is shown in the drawing)
The drain pumps 5A and 5B are inserted into each through portion 8 in a downward posture, and the lower end positions thereof are set to 250 to 300.
In a state where the height is set to be equal to or higher than the minimum ground height of mm, the boat-shaped body 2 is supported via the support member 9, and the through portion 8 and the drainage pumps 5A and 5B are connected to each other by a rubber bellows. The boat-shaped body 2 is connected to each other by the sealing member 10.
Is shut off from the outside. That is, the boat-shaped body 2 is prevented from being flooded through an annular space formed by the inner surface of the through portion 8 and the outer surfaces of the drainage pumps 5A and 5B.

The hydraulic circuit 7 includes a vehicle operating hydraulic circuit 7A constituting a vehicle operating power transmission system and a drain pump operating hydraulic circuit 7B constituting a drain pump operating power transmission system. Hydraulic motors 11A and 11B for driving the crawler are interposed in the circuit 7A, and hydraulic motors 12A and 12 for driving the pump are provided in the hydraulic circuit 7B for operating the drainage pump.
B is interposed. Opening and closing of the vehicle operating hydraulic circuit 7A and the drain pump operating hydraulic circuit 7B is performed by switching an electromagnetic or electric switching valve 13, and a switching signal for the switching valve 13 and an operation / stop for the engine 4 are provided. The tilt angle of the variable displacement hydraulic pump 6 is changed based on a signal and a water level detection signal detected by a water level gauge 14 provided independently outside the amphibious vehicle 1,
A control device 15 for outputting a signal for controlling the pump output of the variable displacement hydraulic pump 6 is provided.

The water level gauge 14 includes, for example, a first water level gauge 14A for detecting a high water level higher than the high water level LWL1 and a middle water level LWL2.
The second water level gauge 14B for detecting the middle water level and the low water level L
It is constituted by a third water level gauge 14C for detecting a low water level of WL3 or higher.

Next, the operation of the above configuration will be described. First, as shown in FIG. 4, the amphibious vehicle 1 loaded on the carrier of a transport vehicle 16 such as a truck is transported to a place near the drainage or plumbing site. If you reach near the site,
A radio signal is transmitted from the control device 15 in FIG. 3 to start the engine 4 and rotate the rollers 3A and 3B in the reverse direction. Thereby, the amphibious vehicle 1 of FIG. 4 travels by itself, recedes straight back and forth on the inclined guide table 17 and descends from the carrier of the transport vehicle 16. When the amphibian 1 descends on the ground, the crawlers 3A and 3B are rotated in the forward direction. Thereby, the amphibious vehicle 1 runs by itself and moves forward 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 and launched by the same operation as described above, and is moved on the water bottom to the water depth area shown in FIG. By moving the amphibious vehicle 1 to a deeper area, the amphibious vehicle 1 floats on the water surface. By continuing the rotation of the crawler 3A, 3B in the forward direction while the amphibious vehicle 1 is floating on the water surface, the crawler projection (not shown) projecting from the crawler 3A, 3B rotates. ,
A thrust for advancing the amphibious vehicle 1 can be obtained.

[0013] When the amphibious vehicle 1 is moved to a predetermined depth range, the control unit 15 by operating switches valve 13 outputs a switching signal from Ru stop the amphibious vehicle 1
At the same time, the drainage pumps 5A and 5B are activated to start draining. When drainage is started, the first water level gauge 14A,
A high water level equal to or higher than LWL1 is detected by all the water level gauges 4 of the second water level gauge 14B and the third water level gauge 14C. The high water level detection signals detected by the three water level gauges 14A, 14B and 14C are input to the control device 15,
A control signal is output from the control device 15 to the drive system of the drainage pumps 5A and 5B based on the input high water level detection signal,
Controls the output of the drive system. That is, the tilt angle of the variable displacement hydraulic pump 6 is set to the value of θ3 shown in FIG. 5 by the control signal output from the control device 15, and the variable displacement hydraulic pump 6 By rotating the pumps 5A and 5B at high speed, the discharge amount is increased and rapid drainage is performed.

When the water level drops to LWL2 in FIG. 3 due to rapid drainage due to the high-speed rotation of the drainage pumps 5A and 5B, a lower water level LWL2 is detected by the two water level gauges 14B and 14C. The middle water level detection signals detected by the two water level gauges 14B and 14C are input to the control device 15, and the control device 1 is controlled based on the input middle water level detection signals.
5 outputs a control signal to the variable displacement hydraulic pump 6,
By changing the tilt angle of the variable displacement hydraulic pump 6 to the value of θ2 shown in FIG. 5, operating the variable displacement hydraulic pump 6 at an intermediate output, and rotating the drainage pumps 5A and 5B at a medium speed, the discharge amount is increased. And drain water.

When the water level drops to LWL3 in FIG. 3 due to drainage of the drainage pumps 5A and 5B at medium speed rotation, the water level LWL3 below this level is detected only by the third water level gauge 14C. The low water level detection signal detected by the third water level gauge 14C is input to the control device 15, and the control device 15 outputs a control signal to the variable displacement hydraulic pump 6 based on the input low water level detection signal, By changing the tilt angle of the variable displacement hydraulic pump 6 to the value of θ1 shown in FIG. 5, operating the variable displacement hydraulic pump 6 at a low output, and rotating the drainage pumps 5A and 5B at a low speed, the discharge amount is reduced. Drain the water further. As a result, the drainage operation can be performed to a low water level without sucking the vortex, so that the water level at which the drainage operation is possible can be lowered and the remaining water amount can be reduced.

On the other hand, the amphibious vehicle 1 moves up and down with the inclined guide table 17 as a guide, reciprocates between the transport vehicle 16 and the shore, or moves on the water bottom to the depth shown in FIG. Even in this case, since the lower end positions of the drainage pumps 5A and 5B are set to be equal to or higher than the minimum ground height of 250 to 300 mm, they do not interfere with the road surface or the water bottom. Also,
The penetrating part 8 formed on the bottom 2A of the boat- shaped closed body 2 and the drainage pumps 5A and 5B are connected to each other by a water seal member 10, and the inside of the boat-shaped closed body 2 is blocked from the outside. Boat type passing between part 8 and drainage pumps 5A and 5B
It can reliably prevent the occurrence of inconvenience that flooded sealing body 2
You .

[0017]

As described above, according to the present invention,
Even if the drainage or plumbing site and the surrounding ground are soft, the drainage can be drained by mounting a drainage pump on an amphibious vehicle composed of a crawler vehicle capable of running to the water's edge. Moreover, even if the lower end of the drain pump is set to a level higher than the minimum ground height so that the lower end of the drain pump does not interfere with the ground, the discharge rate is reduced by rotating the drain pump at low speed in the low water level region. In addition, since the drainage operation can be performed to a low water level without sucking the vortex, there is an effect that the remaining water amount can be reduced by lowering the water level at which the drainage operation is possible.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view showing an example of an installation structure of a drain pump.

FIG. 3 is a schematic system diagram of a power transmission system for driving a vehicle and a power transmission system for driving a drain pump.

FIG. 4 is a schematic side view showing a state where an amphibious vehicle is loaded on a carrier of a transport vehicle.

FIG. 5 is a graph showing a relationship between a tilt angle of a variable displacement hydraulic pump and a discharge amount of a drainage pump.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Amphibious vehicle 2 Boat-type closed body 4 Engine (drain pump drive system) 5A, 5B Drain pump 6 Variable displacement hydraulic pump (drain pump drive system) 14 Water level gauge 15 Controller

──────────────────────────────────────────────────続 き Continued on the front page (72) Hiroshi Kikuchi, 2-2-9 Shinmachi, Hirakata City, Osaka Prefecture (72) Masahiro Taniguchi 1-1-1, Nakamiya Oike, Hirakata City, Osaka Prefecture Kubota Hirakata Manufacturing Co., Ltd. 72) Inventor Katsura Hara 1-1-1, Nakamiya Oike, Hirakata City, Osaka Prefecture Inside Kubota Hirakata Manufacturing Co., Ltd. (72) Inventor Masahide Konishi 1-1-1, Nakamiya Oike Manufacturing Center, Hirakata City, Osaka Prefecture Inside Kubota Hirakata Manufacturing Co., Ltd. 56) References JP-A-63-151729 (JP, A) JP-A-62-227986 (JP, A) JP-A-2-79101 (JP, A) JP-A-5-229323 (JP, A) Hei 5-229322 (JP, A) Fully open Hei 3-103829 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60P 3/00 B60F 3/00 E02D 3/10

Claims (1)

(57) [Claims] To 1. A boat-sealing body can run the Bei example soft weak soil the amphibious vehicle, comprising mounting the drainage pump for a free-running engine, the drainage of the boat-sealing body external drain
A pump truck, comprising a variable displacement hydraulic pump operated by the engine.
A hydraulic circuit driven by a pump is used to drive the amphibious vehicle.
A first hydraulic motor for transmitting power to the moving part
A vehicle operation hydraulic circuit constituting a diversion power transmission system,
A second hydraulic motor for transmitting power to the drive unit of the drainage pump;
A drainage port that constitutes a power transmission system for drainage pump operation
And a hydraulic circuit for pump operation
The switching valve is provided, et al for opening and closing these two hydraulic circuits alternately
It is, and power drainage pump operation control signal based on the detected water level by water level gauge during drainage operation of the drain pump
A drain pump car , comprising: a control device that outputs to the variable displacement hydraulic pump serving as a drive source of a transmission system and adjusts a discharge amount of the drain pump by changing a tilt angle thereof .