JPH10238140A - Water jetting spray device for construction crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable jetting and spraying only at the necessary time of preventing occurrence and scattering of dust. SOLUTION: A water jetting spray device has jetting water flow piping 11, 11 sending water supplied through a water sending hose in the edge direction of arms 4, 4, water spraying nozzles 12, 12 provided on the edge, a water flow switching parts 13, 13 and receiving rollers 14, 14. The water flow switching parts 13, 13 are provided with lever handles for switching change-over of valves and coil springs as urging means respectively. The arms 4, 4 are in a closed state, so that the other end sides of the lever handles are separated from the receiving rollers 14, 14, and rotated by urging force of the coil springs to open a water flow switching valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing scattering of dust generated when demolishing a concrete building or the like.
The present invention relates to a sprinkler / sprinkler attached to an arm or the like of a crusher for a structure such as concrete.

[0002]

2. Description of the Related Art Conventionally, in the demolition work of an existing building due to construction work, when crushing and removing a concrete building, means such as crushing with an air hammer type rock drill or destruction by hitting a large steel ball are required. Although these methods have been used, these methods have various drawbacks such as causing a pollution problem accompanied by intense noise and vibration, or involving danger. Therefore,
2. Description of the Related Art In recent years, a construction method in which a building crushing device of a type in which a building is crushed with low pressure by hydraulic pressure or the like is attached as an attachment of a working machine such as a power shovel has been widely adopted. By the way, even in the construction method using this building crushing device, dust is generated and scattered when compressing and crushing the concrete building, and a new work accompanying the dismantling work of the existing building in the densely populated residential area is inevitable. Pollution problems arise. Conventionally, in order to solve such a problem, a site worker goes up from the ground or to a high place of a building being dismantled and sprays water near a building crusher with a hose or the like to prevent scattering of dust. Was.

However, in high-place work such as crushing the fifth floor of a five-story reinforced concrete building, it is difficult for field workers to spray water from the ground to the vicinity of the building crusher with a hose or the like. If a worker is forced to rise to a high place of a building being demolished and spray water with a hose or the like near the building crusher, a great danger is involved because the building is being demolished. In addition, even when water is sprayed from the ground with a hose or the like, there is a risk that the concrete lump will fall from above the worker's head.

Therefore, in recent years, a construction crusher is provided with an injection sprinkler, and water jetted from a water supply tank via a water supply hose to sprinkle water to a dust generating site by the injection sprinkler has been developed and is known. I have. FIGS. 8 and 9 show an example of the spraying and sprinkling device of such a building crusher.
That is, as shown in FIG.
A plurality of fountain pipes 53 are provided in the width direction at the base of the arm 52 of the building crusher 51.
A watering nozzle 54 is attached to the tip of 3 so as to face inward. As shown in FIG. 9, a pump 56 is connected to this spray watering device via a water supply hose 55 which is stretched on the arm of the hydraulic excavator and extends rearward of the excavator.
Further, it is connected to a water supply tank 57. Then, when the operator turns on the switch 58 from the driver's seat (cabin) of the hydraulic excavator shown in FIG. 9, the valve of the motor valve 59 is opened, and the water pumped from the water supply tank 57 by the pump 56 is The water is supplied to the fountain pipe 53 of the blast sprinkler shown in FIG. 8 through the water supply hose 55, and is continually blasted from the mist spray nozzle 54 toward the tip end of the building crusher.

[0005]

However, in the above-described conventional spraying apparatus for a building crusher, the arm 52 is used.
Is opened, the spraying water is sprinkled while moving the building crusher 51 to another crushing place, which is uneconomical. It is conceivable to turn off the switch 58 when the building crusher 51 is largely moved. However, in the case of continuously crushing a beam or the like of a concrete building, when the arm 52 is opened and pulled from the beam or the like. Switch 5 for each
It is very troublesome to repeat ON / OFF of 8 and it is not possible to concentrate on the crushing work. In such a case, the structure crusher 51 is conventionally moved while spraying water. Especially in summer when water shortage is a concern,
It is necessary to cooperate in water saving at the crushing site. However, in the above-described conventional spray watering apparatus, no consideration has been given to the point of water saving effect.
An object of the present invention is to solve the above-mentioned problems of the prior art,
An object of the present invention is to provide a spraying apparatus for a building crusher capable of spraying water only when necessary.

[0006]

SUMMARY OF THE INVENTION In view of the empirical fact that dust is generated when a concrete building is clamped by the arm of a crusher, the present inventor has proposed a method for preventing the generation of dust at a crushed portion. As a result of studying back to the origin of spray watering, the present inventor has devised a spray watering device for a structure crusher which automatically sprays water only when the arm of the structure crusher is closed.

In other words, according to the present invention, a pair of arms having a crushing blade at its tip end for squeezing and crushing a structure opposing each other and having a middle portion pivotally supported on a side plate, A link mechanism connected to an end and operating to open and close the arm; and a hydraulic cylinder having a piston rod for operating the link mechanism, wherein the arm is opened and closed by hydraulic pressure of the hydraulic cylinder. Pinching,
In the crushing machine for crushing the structure, the fluid supplied through the feeding means to the crushing machine is injected toward the distal end of the arm in order to prevent scattering of dust generated when the structure is crushed and crushed. A spraying and sprinkling device for spraying water, wherein said detecting means is attached to said building crusher and detects opening and closing of said arm, and spraying and spraying means for spraying said fluid when said closed state of said arm is detected by said detecting means. And a spray watering device for a building crusher, characterized by having the following. In the above, the detecting means may be constituted by a proximity sensor for detecting a stroke of the piston rod. Further, it may be constituted by an angle sensor for detecting an opening / closing angle of the arm.

Further, according to the present invention, a pair of arms having a crushing blade at a tip end thereof for pressing and crushing a structure opposing each other and having an intermediate portion pivotally supported by a side plate, A link mechanism connected to an end and operating to open and close the arm; and a hydraulic cylinder having a piston rod for operating the link mechanism, wherein the arm is opened and closed by hydraulic pressure of the hydraulic cylinder. Pinching,
In the crushing machine for crushing the structure, the water supplied to the building crushing machine through the water supply means is injected toward the distal end of the arm in order to prevent the scattering of dust generated when the building is crushed and crushed. A water spray pipe for spraying water, the water pipe being connected to the water supply means and distributing water supplied through the water supply means in the distal direction of the arm, and the water flow pipe provided at the tip of the water flow pipe. A sprinkling nozzle for sprinkling the distributed water toward the distal end of the arm, a lever handle attached to the arm and connected to an intermediate portion of the water flow pipe, and a lever handle for switching the opening and closing of a valve, and one end of the lever handle A water flow opening / closing unit having an urging means for urging the water, and a receiving roller provided at a tip of the side plate, wherein the water flow opening / closing unit has the arm in an open state. When the lever handle is pushed by the receiving roller at the other end and rotates against the biasing force of the biasing means to close the valve, and the arm is closed, the lever handle is closed. The other end side is separated from the receiving roller, and is rotated in the opposite direction by the urging force of the urging means to open the valve. Here, the watering nozzle has a fan-shaped flat wide-angle shape, and can be attached to the water flow pipe so that the angle can be adjusted by a free joint. Further, a guard member for preventing the watering nozzle from being damaged may be provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an injection watering apparatus for a building crusher according to an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the structure crusher equipped with the jet watering apparatus according to the present embodiment has crushing blades 1 and 1 at its distal end for pressing and crushing the structure in opposition to each other. A pair of arms 4.4 pivotally supporting the parts 2 and 2 to the side plate 3
A link mechanism 6 that is connected to the rear end 5 of the arms 4 and 4 and that operates to open and close the arms 4 and 4;
Hydraulic cylinder 8 having piston rod 7 for actuating
The arms 4 and 4 are provided by hydraulic pressure of the hydraulic cylinder 8.
By opening and closing, the construct is crushed by pinching. The jet watering apparatus according to the present embodiment sprays water toward the tips of the arms 4 and 4 in order to prevent scattering of dust generated when the crushing blades 1 crush and crush the structure. It is a water sprinkler and is used in the spray water sprinkling system of the conventional general building crusher shown in FIG.

The features of the spraying apparatus according to the present embodiment are shown in FIG.
As shown in FIG. 3, water flow pipes 11, 11 connected to a water supply hose 55 (see FIG. 9) and distributing water supplied through the water supply hose 55 toward the distal ends of the arms 4, 4; , 11 provided at the tip of the water flow pipe 11, 11
Nozzles 12 and 12 for sprinkling the water distributed in the direction toward the distal ends of the arms 4 and 4, and a water flow opening and closing unit 13 attached to the arms 4 and 4 and connected to an intermediate portion of the water flow pipes 11 and 11, respectively. , 13 and receiving rollers 14, 14 respectively provided at the tip of the side plate 3. 4 (a),
As shown in FIG. 5B and FIG. 5, the lever handles 15, 15 for opening and closing the valves and the lever handles 15, 1 are respectively provided.
5 is provided with coil springs 16, 16 as urging means for urging one end of the coil 5.

In the water flow opening / closing portions 13, 13, the arms 4, 4 are opened as shown in FIG. Pressed coil spring 16,
The water flow opening / closing valves 17, 17 in the water flow opening / closing sections 13, 13 are closed by rotating against the urging force of 16. On the other hand, in the water flow opening / closing sections 13, 13, the arms 4, 4 are closed as shown in FIG.
The other end of each of the coils 5 and 15 is separated from the receiving rollers 14 and 14 and is rotated in the opposite direction by the urging force of the coil springs 16 and 16 to open the water flow opening / closing valves 17 and 17.

As shown in FIG. 6, each of the watering nozzles 12, 12 has a fan-shaped, flat, wide-angle shape, and is attached to the water flow pipes 11, 11 by a free joint so that the angle thereof can be freely adjusted. I have.

As shown by broken lines in FIG. 6, guard members 18, 18 for preventing damage to the watering nozzles 12, 12 may be attached to the arms 4, 4, respectively. As the material of 18, 18, a material that can withstand the strength even when the concrete mass collides at the time of crushing is desirable, for example, an iron plate or a steel plate can be considered.

Now, the operation of the spraying apparatus according to the present embodiment will be described.

In the case of using the spraying apparatus according to the present embodiment, first, an operator turns on a switch 58 from the driver's seat (cabin) of the hydraulic excavator as in the conventional example shown in FIG. , The water tank 5 by the pump 56
7 is supplied via the water supply hose 55 to the water flow pipes 11, 11 of the spraying and sprinkling device shown in FIGS.
You don't have to worry about F at all, just concentrate on the crushing and demolition work of the structure. That is, in the crushing and dismantling work of the structure, for example, when the crusher is moved to a place to be crushed by operating the arm of the hydraulic excavator, the arm 4 or 4 as shown in FIG. What is necessary is just to move it with the open state. If you do this,
As shown in FIG. 2, in the water flow opening / closing portions 13, 13, the lever handles 15, 15 receive the other end thereof, respectively.
4 and 14, it rotates against the urging force of the coil springs 16 and 16. The rotation of the lever handles 15, 15 causes the water flow opening / closing valve 1 in the water flow opening / closing portions 13, 13.
7 and 17 come to the position shown in FIG. 4A, and do not communicate with the ends of the water flow pipes 11 via the joints 17a. Therefore, the water flow opening / closing valves 17, 17 are closed, and the water distributed by the water flow pipings 11, 11 stays in the water flow opening / closing portions 13, 13, and the watering nozzles 12, 1 are provided.
Since the water does not flow into the arm 2, the water is not sprinkled toward the distal ends of the arms 4 and 4.

On the other hand, when the arms 4 and 4 in the open state are moved to the positions to be crushed and the structure is crushed by the crushing blades 1 and 1 and crushed, the arms 4 and 4 are moved as shown in FIGS. It is closed. At this time, the water flow opening / closing parts 13, 13
Then, as shown in FIG. 3, the other ends of the lever handles 15, 15 are separated from the receiving rollers 14, 14, and are rotated in the opposite direction by the urging force of the coil springs 16, 16. Due to the rotation of the lever handles 15, 15 in the opposite direction, the water flow opening / closing valves 17, 17 come to the position shown in FIG. 4B in the water flow opening / closing portions 13, 13, via the joint 17a. It communicates with the end of the water flow pipes 11,11. Accordingly, the water flow opening / closing valves 17, 17 are opened, and the water distributed by the water flow pipings 11, 11 flows through the water flow opening / closing portions 13, 13 to the watering nozzles 12, 12, and the arms 4, 4 are actuated by the water pressure. Spouted and sprinkled toward the tip of. Thereafter, by the above-described mechanism, the water distributed to the water flow pipes 11 and 11 is not sprayed and sprayed when the arms 4 and 4 are in the open state, and is automatically sprayed from the spray nozzles 12 and 12 when the arms 4 and 4 are closed. Is sprayed.

Therefore, when dust is generated and scattered by crushing and crushing the structure by the crushing blades 1, 1, the sprayed water can be effectively sprayed. When there is no dust generation or scattering, such as when moving, water can be conserved without spraying water.

The watering nozzles 12, 12 each have a fan-shaped flat wide-angle shape, and are connected to the water flow pipe 1 by a free joint.
1, 11 so that the watering nozzle 12,
12 is adjusted as shown in FIG.
As shown in FIG. 6, water can be sprayed over a wide area in a fan shape, and water can be prevented from splashing on the closed crushing blades 1, 1. Therefore, it is also possible to effectively prevent the crushing blades 1, 1 from being rusted due to the water being applied to the crushing blades 1, 1.

Next, an injection watering apparatus for a building crusher according to another embodiment of the present invention will be described with reference to FIG.

The construction crusher on which the jet watering apparatus of the present embodiment is mounted is basically the same as that of the embodiment shown in FIG.

The feature of the spray watering apparatus of this embodiment is that the spray watering means is connected to the water supply hose 55 (see FIG. 9) and distributes the water supplied through the water supply hose 55 toward the distal ends of the arms 4 and 4. Water flow pipes 11 and 11 and water flow pipe 1
Water spray nozzles 12, 12 provided at the tips of the water flow pipes 11, 11 for spraying the water distributed by the water flow pipes 11, 11 toward the distal ends of the arms 4, 4. , 11 are connected to the water flow opening / closing portions 13 ′, 13 ′, and the water flow opening / closing portions 13 ′, 13 ′ include an electromagnetic opening / closing valve that opens and closes the valve with an electromagnet.

In the spraying apparatus according to the present embodiment, as shown in FIG. 7, a proximity sensor 21 is provided inside one side plate 3, and the proximity sensor 21 is provided for the piston rod 7 of the hydraulic cylinder 8. Detect the journey. That is, FIG.
When the distal end of the piston rod 7 extends to just below the proximity sensor 21, the proximity sensor 21 detects this and emits an electric signal to the water flow opening / closing portions 13 ', 13', as shown in FIG. At 13 ', the valve is opened by the action of the electromagnet. On the other hand, when the piston rod 7 contracts into the hydraulic cylinder 8 and the tip end thereof does not exist immediately below the proximity sensor 21, the piston rod 7 receives an electric signal from the proximity sensor 21,
In the water flow opening / closing portions 13 ', 13', the valve is closed by the action of the electromagnet.

As a modified example of this embodiment, an angle for detecting the opening / closing angle of the arms 4 and 4 is provided on a pivot 23 which pivotally supports the intermediate portions 2 and 2 of the pair of arms 4 and 4 on the side plate 3. A sensor may be provided. In this case, when the angle sensor detects the open state of the arms 4, 4, the water flow opening / closing sections 13 ′, 13 ′.
In the water flow opening / closing portions 13 ′, 13 ′, the valves are opened by the action of the electromagnets. Conversely, when the open state of the arms 4, 4 is detected by the angle sensor, the electric signals are received, In the water flow opening / closing portions 13 ', 13', the valves may be closed by the action of the electromagnet. In the above-described example using the proximity sensor 21 and the angle sensor, the electromagnetic on-off valve is provided in the water flow opening / closing portions 13 ′, 13 ′. Instead, an electromagnetic on-off valve may be directly provided at an arbitrary position of the water supply hose 55 or the water flow pipes 11,11.

[0025]

As described above, according to the present invention,
By mechanically or electrically detecting the opening and closing of the arm of the building crusher, it is possible to spray and spray a fluid such as water to the crushing location only when the closed state is detected. Therefore, it is possible to concentrate on the crushing and demolition work of the structure without worrying about ON / OFF of the switch for spraying and spraying, so that the structure can be efficiently dismantled.

Further, since it is possible to spray and spray water only when it is necessary to prevent the generation and scattering of dust, it is economical, and the dismantling cost of the structure can be reduced.

Further, since it is possible to cooperate in water saving at crushing sites such as in summer when there is a concern that water shortages may occur, the present invention has great significance from a public viewpoint.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire configuration of a crusher provided with an injection watering device according to an embodiment of the present invention.

FIG. 2 is a view showing a main part of the crusher shown in FIG. 1 for explaining the configuration of the spraying apparatus according to the embodiment of the present invention, particularly when an arm of the crusher is in an open state. Is shown.

FIG. 3 is a view showing a main part of the crusher shown in FIG. 1 for explaining the configuration of the jet watering apparatus according to the embodiment of the present invention, particularly when the arm of the crusher is closed. Is shown.

FIG. 4 is an enlarged view showing a main part of the injection watering apparatus according to the embodiment of the present invention, where (a) shows a case where the valve is in a closed state, and (b) shows a state where the valve is in an open state. Indicates the case where

FIG. 5 is a longitudinal sectional view of a main part of the jet watering apparatus shown in FIG. 4;

FIG. 6 is a side view of a main part of the crusher when the arm of the crusher is closed as shown in FIG. 3;

FIG. 7 is a side view showing the entire configuration of a crusher provided with an injection sprinkler according to a modification of the present invention.

FIG. 8 is a view showing a conventional water sprinkler of a crusher.

FIG. 9 is a diagram showing a general system configuration of a conventional water sprinkler of a crusher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crushing blade 2 Intermediate part 3 Side plate 4 Arm 5 Rear end part 6 Link mechanism 7 Piston rod 8 Hydraulic cylinder 11 Water flow piping 12 Sprinkling nozzle 13 Water flow opening / closing part 13 'Water flow opening / closing part 14 Receiving roller 15 Lever handle 16 Coil spring 17 Water flow opening / closing Valve 17a Joint 18 Guard member 21 Proximity sensor 51 Construction crusher 52 Arm 53 Fountain pipe 54 Sprinkler nozzle 55 Water supply hose 56 Pump 57 Water supply tank 58 Switch

Claims (8)

[Claims] 1. A pair of arms, each having a crushing blade at its front end, which opposes and crushes a structure opposing each other, and an intermediate portion pivotally supported on a side plate, and connected to a rear end of the arm. A structure comprising: a link mechanism that operates to open and close an arm; and a hydraulic cylinder having a piston rod that operates the link mechanism, and squeezes and crushes the structure by opening and closing the arm by hydraulic pressure of the hydraulic cylinder. In the crusher, the fluid supplied through the feed means to the construct crusher is sprayed toward the tip end of the arm to spray the fluid supplied to the construct crusher in order to prevent scattering of dust generated when the construct is squeezed and crushed. A sprinkler, which is attached to the building crusher, for detecting opening and closing of the arm, and injecting the fluid when the detecting unit detects a closed state of the arm. An injection watering apparatus for a building crusher, comprising: an injection watering means for spraying water. 2. The spraying apparatus for a building crusher according to claim 1, wherein said spraying and spraying means is connected to said feeding means and distributes a fluid supplied through said feeding means toward a tip end of said arm. A fluid pipe, a jet nozzle provided at the tip of the fluid pipe, for jetting and scattering the fluid distributed by the fluid pipe toward the tip of the arm, and an electromagnet provided in the feed means or the fluid pipe. An injection sprinkler for a building crusher, comprising an electromagnetic on-off valve for opening and closing the valve. 3. The spraying apparatus for a building crusher according to claim 2, wherein said detecting means comprises a proximity sensor for detecting a stroke of said piston rod. . 4. The sprinkler for a building crusher according to claim 2, wherein said detecting means comprises an angle sensor for detecting an opening / closing angle of said arm. . 5. A pair of arms each having a crushing blade at its tip end, which opposes and crushes the structure opposing each other, and an intermediate portion pivotally supported by a side plate, and a pair of arms connected to the rear end of the arm. A structure comprising: a link mechanism that operates to open and close an arm; and a hydraulic cylinder having a piston rod that operates the link mechanism, and squeezes and crushes the structure by opening and closing the arm by hydraulic pressure of the hydraulic cylinder. In the crusher, the water supplied to the structure crusher via a water supply means is sprayed toward the tip end of the arm in order to prevent scattering of dust generated when the structure is pinched and crushed. A water sprinkler, comprising: a water flow pipe connected to the water supply means for distributing water supplied through the water supply means in a distal direction of the arm; and a water flow pipe provided at a tip of the water flow pipe. A sprinkling nozzle for sprinkling water distributed by the arm in the direction of the distal end of the arm, a lever handle attached to the arm and connected to an intermediate portion of the water flow pipe, for opening and closing a valve, and one end of the lever handle A water flow opening / closing unit including an urging means for urging the side, and a receiving roller provided at a tip of the side plate,
The water flow opening / closing unit, when the arm is opened, the lever handle is pressed by the receiving roller at the other end side and rotates against the urging force of the urging means to close the valve, When the arm is closed, the other end of the lever handle separates from the receiving roller and rotates in the opposite direction by the urging force of the urging means to open the valve. Injection sprinkler. 6. The spraying and sprinkling device for a building crusher according to claim 5, wherein said urging means is constituted by a coil spring. 7. The spraying apparatus for a building crusher according to claim 5, wherein the watering nozzle has a fan-shaped flat wide angle shape, and is attached to the water flow pipe so that the angle can be adjusted by a free joint. A sprinkler for a building crusher, comprising: 8. The sprinkler for a building crusher according to claim 7, further comprising a guard member for preventing damage to said sprinkler nozzle.