JP2573494Y2 - Operation mode control device for drainage pump truck - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] This invention is intended for emergency drainage in the event of a water disaster,
The present invention relates to an operation mode control device for a drainage pump truck used for drainage in civil engineering temporary work or agricultural water supply and drainage.

[0002]

2. Description of the Related Art Conventionally, cranes used for loading and unloading equipment such as pumps on trucks have been used as drainage pump trucks used for emergency drainage during a water disaster, temporary drainage for civil engineering work, or water supply and drainage for agriculture. Multiple drainage pumps (submersible pumps) and drainage pumps with floats, private power generators that supply power to the drive sources (motors) of these drainage pumps and their operation panels, drainage hoses connected to the drains of each drainage pump, Cab tire cable for electrically connecting the drive source of the drainage pump and the operation panel of the private power generator, main floodlight for night work, auxiliary floodlight for spot lighting, and general power generation to supply power to this auxiliary floodlight Some devices are equipped with devices such as devices. According to this type of drainage pump truck, if the vehicle arrives at the water drainage or water supply / drainage site by self-propelled connection, the drainage hose is connected and the cabtire cable is connected, and then the drainage pump is laid underwater by a crane. The power is supplied to the drive source of the drainage pump by the operation of the private power generator, and the drainage is performed by operating the drainage 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, it is necessary to manually carry out various tasks such as transporting the drainage pump with the float unloaded from the loading platform to the shore, laying the drainage pump underwater from the shore, and transporting and connecting the cabtire cable. . In other words, there are tasks such as transporting the drainage pump unloaded from the bed by a crane to the shore by a hand cart, constructing an inclined guide at the shore, laying a drainage pump underwater using the constructed inclined guide, etc. Various tasks 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.

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 surrounding ground are soft, the amphibious vehicle runs on its own to the shore, the operation of unloading the amphibious vehicle from the carrier of the transport vehicle, and moving from the lowered position to the shore. Operation, launching the amphibious vehicle from the shore and moving it up to the depth where the drain pump can be operated, stopping the amphibious vehicle at this depth and then draining it, and draining after draining is completed. A series of operations such as an operation to stop the operation of the pump, an operation to return the amphibious vehicle to the shore and an operation to move it from here to the transport vehicle and put it on the bed,
We proposed a drainage pump truck that can be configured to be operated by remote control and that can improve workability.

In this type of drainage pump truck, a pair of left and right crawlers are driven by a pair of hydraulic pumps to move the amphibious vehicle in a state of landing on the ground or the bottom of the water (hereinafter referred to as “ground contact”), or float on the water surface. It is configured to move in a state (hereinafter, referred to as floating movement). At the time of the touch-down movement, the touch-down movement speed is limited to a low speed range of 5 to 10 Km / H to improve traveling safety. That is, the drive output of the pair of hydraulic pumps is set to a value at which the drainage pump truck can travel in a low speed range. However, since the thrust during the floating movement is configured to be obtained by moving the crawler projection protruding from the crawler, the thrust is configured to be obtained.
Even when the crawler is rotated in the same low-speed region as in the landing movement during the floating movement, a problem occurs in which a predetermined thrust cannot be obtained. Therefore, it is required that the traveling speed is improved by restricting the traveling speed to a low-speed region during the landing movement to improve traveling safety, and that the thrust required for the rising movement is obtained at the time of the rising movement, and the drainage pump truck is moved at a preferable rising movement speed. You.

[0006]

The problem to be solved is that if the contact speed is limited to a low speed range to improve the running safety, the thrust required for the levitation movement cannot be obtained.

[0007]

SUMMARY OF THE INVENTION The present invention provides a self-propelled engine and a drainage pump for draining the outside of the boat-type sealed body in an amphibious vehicle capable of traveling on soft ground having a boat-type closed body. A first hydraulic pressure that is mounted on a vehicle and a drainage pump driving power transmission system of the amphibious vehicle is driven by a hydraulic pump driven by the engine as a drive source to transmit power to a drive unit of the amphibious vehicle; A hydraulic circuit for driving a vehicle having a motor interposed therein, and a second hydraulic circuit for transmitting power to a drive unit of the drain pump using the hydraulic pump as a drive source.
An operation mode control device for a drainage pump truck, comprising a hydraulic circuit for operating a drainage pump provided with a hydraulic motor, and a switching valve for alternately opening and closing both hydraulic circuits is provided. A detector that detects a landing state and a surface floating state of the amphibian, and a control device that outputs a drive signal to the hydraulic pump based on a signal detected by the detector,
The drive output of the hydraulic pump is controlled to a suitable value in accordance with the grounding or lifting movement of the drainage pump truck, limiting the grounding movement speed to a low speed range to improve traveling safety and reducing the thrust required for the rising movement. Achieved objectives achieved.

[0008]

According to the present invention, the signal detected by the detector is input to the controller. When the landing state of the amphibious vehicle is determined based on the input detection signal, the control device outputs a low mode drive signal to the hydraulic pump. As a result, the contact moving speed of the drainage pump truck is limited to a low speed region. On the other hand, when the water surface floating state of the amphibious vehicle is determined based on the input detection signal, the control device outputs a high mode drive signal to the hydraulic pump. This allows
The thrust required for the drainage pump truck to move up and down can be obtained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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, and FIG. 2 is a system diagram of a power transmission system for driving a vehicle and a power transmission system for driving a drainage pump. Is an amphibious vehicle, which is composed of a boat-type closed body 2 and a crawler vehicle having a pair of left and right crawlers 3A and 3B capable of running on soft ground. Stand drain pumps 5A, 5B,
Two hydraulic pumps 6 operated by the engine 4
A, 6B and a hydraulic circuit 7 driven by the hydraulic pumps 6A, 6B are mounted in a watertight manner. Drainage pump 5
Each of the suction ports A and 5B penetrates the bottom of the boat-shaped closed body 2 in a watertight manner and opens at the lower side of the bottom. The hydraulic pumps 6A and 6B are directly connected to the engine 4, and these are variable displacement two-way flows.
A1 and 6B1 adjust the flow direction of the oil and the amount of discharged oil or the flow direction of the oil and the tilt angle of the swash plate.

The hydraulic circuit 7 comprises two sets of vehicle operating hydraulic circuits 7A1 and 7A2 constituting a vehicle operating power transmission system of the amphibious vehicle 1, and two circuits 1 forming a drain pump operating power transmission system. Set of hydraulic circuits 7B1,
7B2, a first hydraulic motor 8A is interposed in the vehicle operating hydraulic circuit 7A1, and the vehicle operating hydraulic circuit 7A
2, a first hydraulic motor 8B is interposed, a second hydraulic motor 9A is interposed in the drain pump operating hydraulic circuit 7B1, and a second hydraulic motor 9B is interposed in the drain pump operating hydraulic circuit 7B2. . The output shaft of the first hydraulic motor 8A is:
Connected to the driving wheel of one crawler 3A,
The output shaft of the hydraulic motor 8B is connected to the driving wheel of the other crawler 3B. The hydraulic circuits 7A1 and 7A2 for driving the vehicle and the hydraulic circuits 7B1 and
The switching of 7B2 is performed by switching the electromagnetic, electromagnetic / hydraulic or electric switching valves 10A and 10B, and controls the switching of the switching valves 10A and 10B, and controls the operation / stop of the engine 4 and the rotation speed. Is the transmitter 11
A and a control device 11 including a controller 11B that receives a radio signal transmitted from the transmitter 11A and outputs a control signal, and is remotely controlled.

On the other hand, the direction of oil flow and the amount of oil discharged from the hydraulic pumps 6A and 6B or the direction of oil flow and the tilt angle of the swash plate are detected by a detector 11C comprising a water level sensor mounted on the amphibious vehicle 1. It is controlled based on the landing signal of the amphibious vehicle 1 or the surface levitation signal. That is,
The detection signal input from the detector 11C to the controller 11B is input from the controller 11B to the determination circuit 11D. Here, if the input water level is a value from 0 to the draft of the amphibious vehicle 1, the landing state is determined. Then, a landing signal is output to the regulator controllers 6A1 and 6B1, and a low mode drive signal is output from the regulator controllers 6A1 and 6B1 to the hydraulic pumps 6A and 6B. If the water level input to the determination circuit 11D exceeds the draft of the amphibious vehicle 1, it is determined that the surface is floating, and a surface floating signal is output to the regulator controllers 6A1 and 6B1, and the regulator controller 6A1 is output. , 6B1 output a high mode drive signal to the hydraulic pumps 6A, 6B. That is, the detector 11C
If the determination circuit 11D determines the landing state based on the landing signal or the surface levitation signal of the amphibious vehicle 1 detected by the above, the low mode drive signal is sent to the hydraulic pumps 6A and 6B via the regulator controllers 6A1 and 6B1. When the output is output, the contact moving speed of the drainage pump truck is limited to the low speed region, and the determination circuit 11D determines the floating state of the surface of the water, the hydraulic pumps 6A, 6B are driven in the high mode via the regulator controllers 6A1, 6B1. A signal is output, and the thrust required for the drainage pump truck to move up and down can be obtained.

With such a configuration, as shown in FIG. 3, the amphibious vehicle 1 loaded on the carrier of the transport vehicle 12 such as a truck is transported to the drainage or near the water supply / drainage site.
When the vehicle arrives near the site, a radio signal is transmitted from the transmitter 11A of the control device 11 of FIG. 2 to the controller 11B to switch the switching valves 10A and 10B to the vehicle operating hydraulic circuits 7A1 and 7A2.
Is shifted to the side where the closed circuit is formed. Then, the engine 4 is started, and a rotation speed control wireless signal is transmitted to the engine 4 to increase the rotation speed of the engine to a predetermined rotation range.
The direction of oil flow of the hydraulic pumps 6A and 6B is set to the reverse rotation side of the vehicle, and the discharge amount is gradually increased. As a result, the hydraulic pumps 6A and 6B of the hydraulic circuit 7 are started, and the first hydraulic motors 8A and 8B of the vehicle operating hydraulic circuits 7A1 and 7A2 are driven to rotate the crawlers 3A and 3B in the backward direction. As a result, the amphibious vehicle 1 shown in FIG. 3 travels on its own, recedes straight back and forth using the inclined guide table 13, and descends from the carrier of the transport vehicle 12. In this case, since the detection signal of the water level 0 detected by the detector 11C is input to the determination circuit 11D,
The determination circuit 11D determines the landing state of the amphibious vehicle 1,
A signal for driving the hydraulic pumps 6A and 6B in the low mode region indicated by Z1 in FIG. 4 is output to the hydraulic pumps 6A and 6B via the regulator control devices 6A1 and 6B1, and the ground moving speed of the drainage pump truck is limited to the low speed region.

If the amphibious vehicle 1 descends to the ground,
By transmitting a wireless signal from the transmitter 11A of FIG. 2, the oil flow direction of the hydraulic pumps 6A, 6B is set to the forward rotation side of the vehicle, and the first hydraulic motors 8A, 8B are driven to drive the crawlers 3A, 3B. Rotate in the forward direction. This allows
The amphibious vehicle 1 travels by itself and advances to the water's edge as shown in FIGS. 5A and 5B. Also in this case, the detection signal of the water level 0 detected by the detector 11C is input to the determination circuit 11D in the same manner as described above, so that the determination circuit 11D determines the landing state of the amphibious vehicle 1, and the regulator control device 6A
4, Z1 in FIG.
A signal for driving in the low mode region is output, and the speed at which the drainage pump truck contacts the ground is limited to the low speed region.

Once the amphibious vehicle 1 has stopped once at the water's edge, a drain hose (not shown) is appropriately connected to the discharge ports 50 of the drain pumps 5A and 5B. When the connection of the drain hose is completed, the amphibious vehicle 1 is made to advance by itself by the same operation as described above, and is launched as shown in FIG. In this case, since the water level is lower than the draft of the amphibious vehicle 1 and the amphibious vehicle 1 has landed on the bottom of the water, the detector 11C
The detection signal of the water level detected by the above, that is, the water level up to the draft of the amphibious vehicle 1 is input to the determination circuit 11D, and the determination circuit 11D determines the landing state of the amphibious vehicle 1, and controls the regulator control devices 6A1 and 6B1. A signal for driving the hydraulic pumps 6A and 6B in the low mode region indicated by Z1 in FIG. 4 is output through the hydraulic pumps 6A and 6B, and the contact moving speed of the drainage pump truck is limited to the low speed region. That is, the drainage pump truck moves forward while contacting the bottom of the water at a low speed.

The advancing movement in a state where the vehicle lands on the water bottom is continued, and as shown in FIG.
The amphibious vehicle 1 rises due to the buoyancy of the boat-shaped hermetic body 2 when the rising draft level becomes larger than the floating draft level. As a result, a detection signal of the water level detected by the detector 11C, that is, a water level exceeding the draft of the amphibious vehicle 1 is input to the determination circuit 11D, and the determination circuit 11D determines the surface floating state of the amphibious vehicle 1, Regulator control device 6A1, 6B
1, a signal for driving the hydraulic pumps 6A and 6B in the high mode region indicated by Z2 in FIG.
By moving the crawler projections 3a and 3b of A and 3B (see FIG. 6) at high speed, a thrust for advancing the amphibious vehicle 1 in a floating state is obtained. If the water reaches the operable area of the drainage pumps 5A and 5B by moving on the water surface in a floating state,
Changeover valves 10A and 10B to hydraulic circuit 7B for drain pump operation
1, 7B2 is shifted to the closed circuit forming side. as a result,
The amphibious vehicle 1 stops at the water surface, and the second hydraulic motors 9A and 9B of the hydraulic circuits 7B1 and 7B for operating the drainage pump are driven. As a result, the drain pumps 5A and 5B are activated to start draining. In this case as well, since a signal for driving in the high mode region indicated by Z2 in FIG. 4 is output to the hydraulic pumps 6A and 6B, drainage is performed by high-speed operation of the drainage pumps 5A and 5B. After draining is completed, the work is completed by placing the amphibious vehicle 1 on the carrier of the transport vehicle 12 by the reverse operation.

As described above, according to the present invention, the detector 11
The signal detected by C is input to the controller 11B.
When the landing state of the amphibious vehicle 1 is determined based on the input detection signal, the controller 11B sends the hydraulic pump 6
A low-mode drive signal is output to A and 6B to limit the ground moving speed of the drainage pump vehicle to a low speed range, and the surface floating state of the amphibious vehicle 1 is determined based on the detection signal input from the detector 11C. In this case, a high mode drive signal is output from the controller 11B to the hydraulic pumps 6A and 6B to obtain the thrust necessary for the drainage pump truck to move up and down. As a result, the thrust necessary for the levitation movement is obtained at the time of the levitation movement, and the drainage pump truck can be moved at a preferable levitation movement speed.

[0017]

As described above, according to the present invention, the drive output of the hydraulic pump is controlled to a suitable value in accordance with the grounding movement or the floating movement of the drainage pump vehicle, and the grounding movement speed is limited to a low speed region. As a result, the driving safety can be improved, and the thrust required for the levitation movement can be obtained to move the drainage pump truck at a preferable levitation movement speed.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an example of a drainage pump truck.

FIG. 2 is a system diagram of a power transmission system.

FIG. 3 is a schematic side view showing a state where an amphibious vehicle is loaded on a carrier of a transport vehicle.

FIG. 4 is a characteristic diagram showing an operation mode of the hydraulic pump.

FIG. 5 is an explanatory view showing a moving state of the drainage pump truck.

FIG. 6 is a partially enlarged perspective view showing a crawler projection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Amphibious vehicle 2 Boat-type closed body 4 Engine 5A, 5B Drain pump 6A, 6B Hydraulic pump 7 Hydraulic circuit 7A1, 7A2 Vehicle operating hydraulic circuit 7B1, 7B2 Drain pump operating hydraulic circuit 8A, 8B First hydraulic motor 9A, 9B Second hydraulic motor 10A, 10B Switching valve 11 Controller 11A Transmitter 11B Controller 11C Detector

Claims (1)

(57) [Scope of request for utility model registration] A self-propelled engine and a drainage pump for draining the outside of the boat-shaped closed body are mounted on an amphibious vehicle capable of traveling on soft ground having a boat-shaped closed body. A vehicle driving power transmission system and a drainage pump driving power transmission system are provided with a first hydraulic motor for transmitting power to a drive unit of the amphibious vehicle using a hydraulic pump driven by the engine as a drive source. A hydraulic circuit and a hydraulic circuit for operating a drain pump having a second hydraulic motor for transmitting power to a drive unit of the drain pump using the hydraulic pump as a drive source, and these two hydraulic circuits are alternately arranged. An operation mode control device for a drainage pump vehicle provided with a switching valve for opening and closing the vehicle, comprising: a detector for detecting a landing state and a water surface floating state of the amphibious vehicle; And a control device for outputting a drive signal to the hydraulic pump based on a signal detected by the detector of (1).