WO2004079106A1

WO2004079106A1 - Power shovel with fluid-feeding device

Info

Publication number: WO2004079106A1
Application number: PCT/JP2004/002783
Authority: WO
Inventors: Hiroshi Hayashi
Original assignee: Solve Corporation Co., Ltd.
Priority date: 2003-03-07
Filing date: 2004-03-04
Publication date: 2004-09-16
Also published as: JP2004270274A; JPWO2004079106A1

Abstract

In a conventional power shovel with a fluid-feeding device, a fluid pump, a fluid tank, etc. are added on an upper rotating body of a conventional power shovel. This has involved problems such as difficulty in supplying fluid, small tank capacity, instability caused by a high center of gravity, and poor traveling capability on a rough road. Such problems are solved by constructing a shovel such that integral tanks are provided at leg portions, showing an X shape in the plan view, of a lower traveling body, a central tank and a fluid pump for hydraulic drive are arranged at the central portion of the lower traveling body, and two to four ballast tanks are arranged on the upper part of the lower traveling body. Further, pressurized oil is fed through a swivel joint at the central portion, fluid in the ballast tanks can be transferred in a direction that increases stability of the shovel, and the shovel can be connected to a water supply vehicle such as a tank trailer.

Description

Power shovel with fluid feed fiber

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power shovel equipped with a fluid feeder, and more particularly, comprises a fluid traveling tank and a pump at least on a lower traveling body, and 1 a nozzle near a boom tip of an upper rotating body via a swivel joint. TECHNICAL FIELD The present invention relates to a power shovel with a fluid feeding / separating device that can send a fluid. Background art

As a power shovel with a fluid feeding device, a “power shovel with a water supply and / or drainage device” which the present inventor is one of the co-inventors (Japanese Patent Application No. 4-82270, ie 8-2 6 5 5 1) (see Fig. 6).

This is a power bucket with a rotating bucket device equipped with a water tank WT and a water bottle: TWP on the upper revolving structure, and a nozzle that can be adjusted in and out of the center of the rotating bucket that can be finely operated. On the other hand, it is extremely effective in that it can be drained accurately or drained, and in the Kobe-Awaji Earthquake where folding has occurred, it has unfortunately exerted its power in the removal of collapsed houses, relief of injured persons, accommodation of dead bodies etc. Of course, it is also useful for general homes and small houses, and the demand is not small.

However, if the fluid tank and pump are arranged on the upper revolving superstructure as shown in Fig. 1, the power shovel itself becomes unstable when working on steep slopes or when the ground is soft, because it becomes unstable. When turning the upper revolving unit at a large angle, the water supply hose connected to the swivel head directly from the fixed faucet on the ground becomes tangled, and in the worst case, the hose may be torn or cut. there were.

Therefore, the present inventor has conducted intensive studies and found that the fluid reservoir and the pump can be connected to the lower traveling body of the lower part. It is attached to the inside of the vehicle, on the vehicle or on the vehicle, and is connected to the nozzle on the upper revolving structure via a swivel joint, so that the center of gravity of the whole excavator is not impaired. It was found that the above problems could be solved by lowering the temperature, and the present inventors arrived at the present invention by further devising.

An object of the present invention is to provide a normal power shovel operation in addition to a normal power shovel operation while maintaining stability up to a considerable ground tilt angle without falling down easily even when the undercarriage is tilted due to the slope or unevenness of the ground. An object of the present invention is to provide a power shovel equipped with a fluid feeder which can supply a fluid such as water from a rotating bucket or the vicinity of the bucket toward a target, for example, by accurately injecting the fluid. Disclosure of the invention

According to the present invention,

In a power shovel equipped with a fluid delivery system, at least a fluid tank and a pump are provided in the lower traveling structure, and it is possible to jet and supply fluid from a nozzle on the upper revolving structure to a target via a swivel joint. Excavator with fluid transfer (Claim 1),

The power shovel with a fluid transmitter according to claim 1, wherein the nozzle is a moving nozzle disposed at or around the shovel itself at the tip of the swing arm (Claim 2).

Whether the fluid tank is a central tank provided with an external fluid supply port provided on the undercarriage or a central tank and an integral tank, and a plurality of stabilizing tanks are added to these. A power shovel with a fluid feeder according to claim 1 or claim 2 (claim 3),

The power shovel with fluid delivery according to any one of claims 1 to 3, wherein the pump is a plurality of self-priming or pressure-feeding electric or hydraulic drive pumps (claim 4), and the swivel joint comprises: From top to bottom, a swivel joint with 0> hydraulic / hydraulic pressure, or ®air (sleeping) / hydraulic / hydraulic pressure, or @ ¾air (sleeping) / hydraulic / hydraulic pressure splitter Any one of claims 1 to 4 The power shovel with a fluid transmitter according to the item (Claim 5),

The upper revolving unit is equipped with an engine-driven sky and an ink tank. Air pressure is introduced from the air tank via a swivel joint to the flow surface in the tank including the integral tank of the lower vehicle. 6. A power shovel with a fluid feeding fiber device according to claim 5, wherein the extruder is discharged and lined.

: and

7. The fluid delivery device according to claim 1, wherein the fluid to be delivered is a fire extinguishing liquid, a water-soluble paint, or an abrasive component mixed at or near a nozzle. —Excavator (Claim 7)

Will be ^^.

By carrying out the present invention, all of the above objects are achieved.

In other words, the power shovel with a low center of gravity, high stability, and a plurality of lance tanks installed on the undercarriage will be removed. . According to the present invention, a high-pressure injection is made possible by the push-up pump arrangement as compared with the example. Injection is possible while sucking, and fluids other than water are also possible. Since the swivel joint on the main unit is used, it does not interfere with turning. In addition, the pilot can freely adjust the water pressure according to the strength of the pedal depression of the step-down pilot valve.

• When used for land mine disposal, the fluid tanks on the undercarriage function as shock absorbers and control walls even if a mine explodes, ensuring the safety of operators in the cockpit and workers nearby. The effect of increasing is expected. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a partial cross-sectional side view of the embodiment, FIG. 2 is a view taken along the line R--S in FIG. 1, FIG. 3 is a view taken along the line U--V in FIG. 2, and FIG. —Hydraulic circuit diagram, Fig. 5 is a listening diagram of Wei example swivel joint, and Fig. 6 is a side view.

In Figs. 1, 2, 3, 4, 5, and 6,

100 is an embodiment, 1 110 is a lower traveling wheel: 1 1 1 is a flat X-shaped frame ¾SU, 112, 113, 114, 115 are water pipes, 120 is upper swing 121 is a swing arm, 122 and 222 are water hoses, 123 is a water injection nozzle, 125 is a packet, 130 is a cockpit, and 200 is a tank trailer , 200A is a coupler, 201 is a lid, 202 is a water cock, and 203 is a steering wheel.

Also, 1 is an engine, 2 is a hydraulic pump, 3 is a hydraulic tank (hydraulic oil tank), 4 is a relief valve, 5 is a solenoid switching valve, 6 is a solenoid switching valve, 7, 8 is a hydraulic operating valve, and 9 and 11 are Hydraulic motor, 10A is auxiliary water pump, 10B is electric pump, 10 is water pump, 14, 15 and 16 are manual one-way valve, 17 is swivel joint, 18 is water tank, 20 is stop valve and 22 is hydraulic Pilot valve (pedal type), 23 is a submersible pump connecting boat, 24, 25 are drive wheels, 24M is a left traveling hydraulic motor, 25M is a right traveling hydraulic motor, 26, 27 are driven wheels, 30 is a water pipe, CT Is a central tank, 11 ¹ 1 "'1 4 ~ is an integral sunset, BT1, BT2, BT3, BT4 are balance tanks, P1 ...; 4 is a self-priming water pump (electric), W is water 24A and 25A are hydraulic motors, 26 and 27 are track driven wheels, 70 is a bearing, 90 is a track, and 500 is the ground. BEST MODE FOR

In order to explain the present invention in more detail, this will be described with reference to the accompanying drawings. In FIG. 1, two self-priming water pumps are connected via a hose 222 from a tank trailer 200 equipped with two steered wheels connected to the rear (when the vehicle reverses, the crawler tracks the main body by crawler).バランス 1 ~ of the balance water tank arranged in various places of the undercarriage

4. Fill the central water tank CT, the integral tanks IT1, IT4 ... in the frame with water W.

The water pump 11 near the water supply port may be electrically driven. When pressure water is obtained from the outside, the water pump 11 idles or bypasses. When the embodiment runs or stops on level ground, the water W filled in each tank is filled with all the tanks, and all the water is supplied with electric pumps Pl,:? 2 ~ and 108, 10B… collected in the medium ^ K tank CT, and the swivel joint 17 with the push-up type powerful hydraulically driven water pump 10 on the bottom of the medium tank CT Water can be pumped through a hose 122 running along a swing arm 121 through the water. The hydraulic drive pump 10 is driven by hydraulic pressure supplied from a hydraulic pump driven by an engine disposed on the upper-part turning body, via a pressure oil tank 3 and further via a swivel joint 17. If an electric pump is frequently used, it is preferable that the secondary battery is not placed on the undercarriage or suspended, and only the pilot power supply or the normal charging power supply is connected via the slip ring of the swivel joint 17. .

If water pressure is insufficient with only the hydraulically driven water pump 10 in the center of the lower traveling structure 110, the auxiliary pump (hydraulic / electric) provided in the series on the upper revolving structure 1A further pressurizes the water with OA. Water is sprayed from the nozzle 123 near the bucket 125. The water tanks on the undercarriage, namely, the integral tanks IT, IT ... balance tanks BT1, BT2, and the central tank CT, are arranged as shown in Fig. 2 and Fig. 3, respectively.

That is, the four balance water tanks BT1, BT2, BT3, and BT4 are arranged in a substantially rectangular shape on the lower traveling body as shown in Fig. 3 so as not to hinder the traveling of the lower traveling body on rough terrain. Between the tanks, water pipes 30, 30, ... and small electric pumps P, Ρ are connected so that water can be easily moved between tanks. In the balance tank BT, a suitable baffle plate (Buf f 1Θ Plate) is welded along the traveling direction and the width direction of the traveling body, so that the water in the evening tank is resistant to movement back and forth and left and right. It is.

In addition, the inside of the frame is composed of a number of integral tanks IT1…: TT4—IT8, which are connected to each other by water pipes 112, 112…. The water in each I 各 is pushed up from the electric pump 10Β installed at the bottom through the water pipe 114 to the central sunset C 夕.

In this process, an air compressor (not shown) is installed around the engine 1 of the upper revolving unit 120, and the water surface of each tank or each integral tank IT 1, IT 2,... If high air pressure is applied evenly to the submarine, high-pressure water can be injected from the nozzle 123 for a short time as in the case of a submarine emergency main tank pro.

The amount of water stored in each of the balance tanks BT1 to BT4 is determined by a vertical Computer control is based on manual control, but the computer is designed in advance to optimize the distribution of water storage based on the inclination of the ground 500, the hardness of the ground, the range of the horizontal vertical rotation angle of the swing arm, etc. Automatic program control can be performed by a program.

In addition, an outrigger (Out Trig ger) composed of hydraulic or -type jacks can be added to the outer edge of the lower traveling frame or the outer surface of the crawler belt with a flat X-shape to further increase the stability. However, when the hydraulic excavator moves a lot, these outriggers not only hinder the running, but also cause the entire example to have its own weight and outer diameter increase, so that it cannot be placed in a narrow place.

Next, the embodiment will be described in detail with reference to the hydraulic-hydraulic circuit diagram of FIG.

First, the operator starts the engine 1 arranged on the upper revolving unit 120, pressurizes the hydraulic oil in the hydraulic oil tank 3 with the hydraulic pump 2, adjusts the pressure with the relief valve 4, The water injection operation is performed by operating the hydraulic operation valve 7 to the step-down pilot valve 22 to the indicated pressure while simultaneously switching the switching valve 6. The operation method is as follows.

For the suction operation, the connection between the water pump 10, the water tank 18 and the connection port 23 of the submersible pump 23 is switched by operating the manual three-way switching valve 14.

Thereafter, by operating the hydraulic pilot valve 22 and rotating the hydraulic motor 9 with the high-pressure oil from the hydraulic operating valve 7, the water pump 10 is operated at the same time and water is sucked up through the superjoint 17.

In the case of the injection operation, the pump 1OA is moved with the high-pressure oil from the hydraulic operation valve 8 to rotate the hydraulic motor 11 so that the water sucked in as described above is swivel joint 17 Through nozzle 1 2 3 Alternatively, instead of water, fire extinguishing solution, 7j <soluble paint or abrasive tteK that can be mixed near nozzle 123 can be used.

At the time of suction, the manual three-way switching valve 14 is opened in advance, the manual three-way switching valves 15 and 16 are closed, and the pedal is operated by operating the step-down pilot valve 22.

At the time of injection, the manual three-way switching valve 14 is closed, the manual three-way switching valves 15 and 16 are opened, and the pedal is operated by the step-down pilot valve 22. Injecting while sucking; ^ is operated by opening the manual three-way switching valve 1 and the manual three-way switching valves 15 and 16 and pedaling the step-down pilot valve 22. It should be noted that the manual three-way switching valves 14, 15, and 16 can be changed to solenoid switching valves.

Next, the swivel joint of the present invention will be described with reference to FIG.

The swivel joint used in the present invention is a swivel joint having a substantially vertical axis as a rotation axis. The swivel joint is arranged in the order from top to bottom as follows: hydraulic pressure / hydraulic pressure (slip ring) hydraulic pressure / hydraulic pressure 1) One rotation of the hydraulic pressure and one hydraulic pressure is provided. Although not shown in FIG. 5, the swivel joints, such as pneumatic, hydraulic and hydraulic pressures, generally have a two-stage annular ring (0-ring) surrounding the annular portion. Etc.) are installed to prevent fluid seepage. In particular, in a swivel joint having a large number of circuits for controlling the distribution of M, ±, hydraulic pressure, water pressure, etc. of each stage as in the present invention, a fluid leak of a degree of bleeding may occur, but the adverse effect thereof is minimized. In order to secure long-term service for long-term workers, a slip ring 40 and a brush 41 on the top floor, followed by ^ 2, a hydraulic distribution «4 3, and a hydraulic pressure IB« 4 4 were arranged in order. Note that a plurality of these may be stacked for each rooster. By doing so, the slip ring is not contaminated with oil or water, which may result in poor insect repellent.

As described above, the power supply shovel according to the present invention can stabilize and reduce the center of gravity even when used on uneven terrain or steep slopes, so there is no danger of overturning. No tangling or cutting of fluid supply hoses.

In addition, the swivel joint itself has been devised, and since there is no mixing between fluids such as oil-water mixing, it can be used for a long time in a bad environment, and is useful for exploring and removing land mines. .

Claims

The scope of the claims

1. In a power shovel equipped with a fluid transmitter, the lower traveling unit is provided with at least a fluid tank and a pump, and the nozzle on the upper revolving unit is capable of injecting and sending fluid toward the target via a swivel joint. Excavator with fluid!

2. The power shovel with a fluid transmitter according to claim 1, wherein the nose is a movable nozzle disposed at or near the shovel at the tip of the swing arm.

3. Whether the fluid tank is a central tank provided with an external fluid supply port provided on the undercarriage, or the central tank and INTEGRAL tank, and multiple stabilization tanks are added to these tanks The power supply shovel according to claim 1 or 2, wherein

4. The power shovel with a fluid feeding device according to any one of claims 1 to 3, wherein the pump is a plurality of self-priming or pressure feeding type electric or hydraulic drive pumps.

5. Swivel joints are arranged in order from top to bottom: hydraulic pressure / hydraulic pressure, or air (sleeping), hydraulic pressure / hydraulic pressure, or ®m air pressure (sleeping): ¾E—hydraulic pressure / hydraulic pressure. The power shovel according to any one of claims 1 to 4, which is a swivel joint.

6. The upper revolving superstructure is equipped with an engine-driven sky mi-revolution and king tank, and is emptied from the pneumatic tank via a swivel joint! 6. The pump with a fluid feeding fiber device according to claim 5, wherein the king is guided to a flow surface in a tank including an integral tank of the lower traveling body to discharge and feed the fluid.

7. The power shovel according to any one of claims 1 to 6, wherein the integrated fluid is a fire extinguishing liquid, a water-soluble paint, or an abrasive component IfoK mixed near the nozzle.