JPH072389Y2 - Fluid ejection device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a fluid ejection device, and particularly to a bulldozer, an excavator loader, a hydraulic excavator, etc. for powder or granular material such as iron ore or coal in a powder or granular material storage such as a ship The present invention relates to a fluid injection device suitable for efficiently removing residual ore or residual coal that has adhered to the wall surface after being discharged.

(Prior Art) Conventionally, as this type of fluid ejecting apparatus, for example, Japanese Patent Laid-Open No. 62-62
-153025 discloses a self-propelled vehicle with a water injection device, such as a front end loader. The front-end loader has a support frame on which a water injection nozzle is provided at its tip, and an arm which is free from undulation, expansion, contraction, and rotation is erected, and a water tank is provided on the support frame and a hose provided along the arm from the water tank. A water pump for sending water to a water injection nozzle via a water pump, a hydraulic motor for driving the water pump, and a solenoid valve for controlling undulation, rotation, expansion and contraction of an arm, and water injection and stop from the nozzle are provided. A control valve unit is mounted, and the support frame can be attached to and detached from the lift arm tip of the front end loader via a quick coupler. The hydraulic motor, arm, and water injection nozzle are connected from the working machine hydraulic circuit of the vehicle body. It is operated by the hydraulic pressure taken out through the quick chuck.

However, since the above-mentioned conventional type uses up the water, it is necessary to take the front end loader in and out of the hold to replenish the water when the water is used up, and the work must be interrupted. Since it has a large capacity water tank, it lacks maneuverability when moving onboard, and there is a problem that it is difficult to apply it to those with a small vehicle weight ton. In order to solve these problems, there has been proposed a water injection system of a water supply system, in which a water tank is connectable to an external water supply source and water is supplied from a nozzle tip while water is supplied, instead of a water use system. This water supply system
For example, it is disclosed in Jitsukai Sho 60-73749. The proposed water injection device is such that the arm is erected on the vehicle body of the front end loader and the water tank, the water pump, the hydraulic motor and the control valve unit are mounted in the vehicle body. To supply water from an external water source to the water tank, connect the base end of the hose wound around the hose reel installed horizontally on the head guard of the vehicle to the water tank while supplying the outlet end of the hose. Connect to a water source.

However, the above-described conventional water injection device using the water supply system has the following drawbacks.

(1) Since the hose reel is installed horizontally on the head guard, the operator cannot check the winding condition of the hose. Therefore, the hose is pulled too much and cut, or the hose is wound during winding. There is a problem such as slackening is not visible and the vehicle is trampled.

(2) Since the hose reel is installed horizontally,
It is difficult to wind the hose with the proper tension, and often the tension is insufficient and the hose is loose.

(3) Since the arm, the water tank, the water pump, the hydraulic motor, and the like are mounted on the vehicle body, the advantage that the front end loader can be used as a multifunction vehicle is lost. In other words, there is a demerit that the original function of the working vehicle is limited because there is a modified part of the vehicle body.

(Means for Solving the Problems) The present invention has been made to eliminate the above-mentioned conventional drawbacks. Therefore, the present invention provides a fluid mounted on the tip of a self-propelled vehicle through a quick coupler. An injection device, which has a support frame having a quick coupler hook for engaging with the quick coupler in a central portion, and undulation, swiveling, and expansion and contraction provided upright on one side of the support frame and having a fluid injection nozzle at a tip thereof. Movable arm, a hose reel erected on the other side of the support frame and rotatable about a horizontal axis rotatably supported by a frame rotatable about a vertical axis, and a fluid tank supported by the support frame And a hydraulic pump that supplies fluid from the fluid tank to the nozzle, and a hydraulic motor that drives the fluid pump, and the hose reel is always in the winding direction. The base end of the hose wound around the hose reel and connected to the fluid tank, and the withdrawal end of the hose can be connected to an external fluid supply source.

(Function) Pull out the hose wound on the hose reel and connect it to the external fluid supply source. The fluid stored in the fluid tank via the hose is pressure-fed to the nozzle at the tip of the arm by the fluid pump, and the ejection force removes the deposits and the like adhering to the ship wall. Since the fluid tank is provided to maintain the balance between the supply amount from the fluid supply source side and the consumption amount on the injection side, it may have a small capacity. Tension always acts on the hose reel in the winding direction, and the hose is paid out as the vehicle moves. At this time, since the hose reel can freely rotate around the vertical axis, the hose can change its direction according to the moving direction of the vehicle, and the hose can be smoothly drawn and drawn. Further, since the operator can always check the winding condition of the hose reel, there is no fear that the hose will be pulled too much or slackened too much to be stepped on by the vehicle. Further, since the hose is wound vertically, the hose does not loosen and come loose. It can be used as a normal self-propelled vehicle by removing the quick coupler from the support frame.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show an embodiment of the present invention.
In this embodiment, the water injection device 3 is attached to the tip of the lift arm of the self-propelled vehicle 1 via a quick coupler.

The water jetting device 3 is provided with a box-shaped support frame 5, a quick coupler hook 9 which can be engaged with a quick coupler 7 (FIG. 4) is provided at the center of the upper surface of the support frame, and the upper surface of the support frame is An arm 11 and a hose reel 13 are provided on the side and the other side, respectively. Inside the support arm 5, a water tank 15, a water pump 17, and a hydraulic motor 19 for driving the water pump are incorporated.

The arm 11 can be swung around a vertical axis by a swivel device 21, and can be undulated and extended by a hydraulic cylinder (not shown). A water injection nozzle 23 is provided at the tip of the arm, and the water injection nozzle is driven by a hydraulic motor to form two orthogonal axes 25,2.
It is designed to be turned around 7.

The hose reel 13 is a frame that can freely rotate around a vertical axis 29 that is erected on the support frame 5 via bearings.
It includes 31 and is rotatably supported by a horizontal shaft 33 supported by the frame. The base end of the hose 35 wound around the hose reel is connected to the water tank 15, and the withdrawal end of the hose is guided by a guide device 37 provided on the upper part of the hose reel, so that it can be connected to an external water supply source. The joint mechanism allows for one-touch attachment / detachment. The guide device 37 preferably includes four guide rollers that support the hose from above, below, left and right. The hose reel 13 is always spring-loaded in the winding direction.

The water pump 17 pumps water from the water tank 15 to the water injection nozzle 23 at the tip of the arm. Therefore, a hose 39 (FIG. 2) is provided along the arm from the water pump to the water injection nozzle.

The water tank 15 is provided to maintain a balance between the amount of water supplied from the water supply side and the amount of water consumed on the injection side. The amount of water stored in the water tank is controlled by the level switch 41 so as to always be at a constant level, so a water tank with a capacity of about 0.5 m ³ is sufficient, and this can reduce the weight. Also, a plurality of partition walls 43 are provided in the water tank,
We are trying to prevent hunting due to water shaking.

The quick coupler 7 is of a normal type, and as shown in FIG. 4, it is held at the tips of the lift arm 45 and the tilt arm 47 of the self-propelled vehicle, and the hook portion 9a of the quick coupler 9 is pinned.
The water injection device 3 is self-propelled when the water injection device 3 is engaged by engaging the pin 49 and further advancing the pin 51 into the left and right pin holes 9b from the side.
Can be attached to.

The hydraulic motor 19, the arm 11 and the nozzle 23 are operated by pressure oil taken out from the working machine hydraulic circuit on the vehicle body side via a quick joint.

Further, reference numeral 53 in the figure is a control valve unit equipped with a solenoid valve capable of operating the undulation, swivel, expansion and contraction of the arm 11, swiveling of the nozzle 23, and jetting and stopping of water from the nozzle. The control valve unit can be operated by remote control from the driver's seat.

With such a configuration, the vehicle is carried into the field, the tip of the hose 35 pulled out from the hose reel 13 is connected to an external water supply source, water is supplied to the water tank 15, and the arm 11 and the nozzle 23 are appropriately supplied. While controlling the posture, the water pump 17 is driven by the hydraulic motor 19 to jet water from the tip of the nozzle 23, and the jetting force removes the deposits attached to the ship wall. At this time, the hose reel 13 can freely rotate around the vertical axis 29 and change its direction by following the moving direction of the vehicle, so that the hose can be smoothly drawn in and out, and therefore, the moving direction of the vehicle is not restricted and the hose reel 13 moves. There is no loss of sex. Further, since the operator can always check the winding condition of the hose reel, there is no risk of cutting the hose by pulling it too much or trampling the hose when it is too loose. Also, since the hose is wound on the reel vertically, the hose will not loosen and come loose. When the vehicle is used for another work purpose, the quick coupler may be loosened to remove the water injection device, and another work device may be attached instead.

It should be noted that the present invention can be used for operations other than the removal of adhered substances, such as fire extinguishing work, and can be applied to fluids other than water injection, such as injection of fire extinguishing liquid.

(Effect) As described above, since the fluid ejecting apparatus of the present invention adopts the fluid replenishment system, it is not necessary to interrupt the work for replenishing the fluid, and the work efficiency can be improved by continuous work. Further, since the fluid replenishment system is adopted, the fluid tank can be made to have a small capacity, which not only can reduce the front load of the vehicle and improve maneuverability,
It can be easily applied to small cars. Furthermore, since the operator can always check the winding condition of the hose reel, there is no danger of pulling too much during work and cutting the hose or trampling the hose due to excessive slack. In addition, the hose reel can freely rotate around the vertical axis and can change its direction by following the moving direction of the vehicle, so that the hose can be smoothly paid out, and the hose is wound vertically on the reel, so the winding is loose. It won't fall apart. Furthermore, by removing the quick coupler, you can easily use the self-propelled vehicle for other work,
It does not impair the performance of a multifunction vehicle.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a front view showing a partially broken water injection device, and FIG. 3 is a partially broken side view of the water injection device. The drawing is a side view showing the capacity of engagement between the water injection device and the quick coupler with the hose reel removed.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroshi Komuro 1-32 Kita-Aoyama, Minato-ku, Tokyo Inside New Caterpillar Mitsubishi Corporation (72) Ide Morita 1-3-2 Kita-Aoyama, Minato-ku, Tokyo (72) Inventor, Kanemitsu Morita, 5-2-15 Okita, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture (72) Inventor: Satoru Furuyashiki, 1-12-1, Kaneda, Kitakyushu, Kitakyushu, Fukuoka

Claims (1)

[Scope of utility model registration request] 1. A fluid ejection device mounted on the tip of a self-propelled vehicle via a quick coupler, the support frame having a quick coupler hook for engaging with the quick coupler in a central portion, and the support frame of the support frame. An undulating, swiveling and telescoping arm that is erected on one side and provided with a fluid injection nozzle at the tip, and is pivotally supported by a frame that is erected on the other side of the support frame and that is swivelable about a vertical axis. A hose reel rotatable about a horizontal axis, a fluid tank supported by the support frame, a fluid pump that supplies fluid to the nozzle from the fluid tank, and a hydraulic motor that drives the fluid pump, The hose reel is always spring-loaded in the winding direction, the base end of the hose wound on the hose reel is connected to the fluid tank, and the hose is pulled. Fluid jet apparatus characterized in that none can be connected end to an external fluid source to.