JP2586762Y2 - Green cut machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a green cutting machine for removing latencies of concrete walls, for example, when constructing a dam body.

[0002]

2. Description of the Related Art When constructing a dam, a seam jointing operation for removing latencies on a concrete surface, that is, a green cutting operation, is conventionally performed by rotating a brush and scraping the concrete surface with a brush. In this case, the work is mechanically shaved, so that the work efficiency is limited. In addition, concrete surfaces have been scraped by holding the nozzle by hand and jetting ultra-high pressure water.However, there is a limit to manual work over a wide range of concrete surfaces, and removal of scraped latencies is also difficult. Additional work is required.

[0003] Therefore, an ultrahigh-pressure water pump and a vacuum pump are installed at predetermined fixed positions, and ultrahigh-pressure water from the ultrahigh-pressure water pump is supplied to a movable vehicle body to be provided on the vehicle body. It is conceivable that the injected latencies are ejected from the injection nozzle to the concrete surface, and the removed latency is suctioned from the vehicle body side by a vacuum pump and removed from the concrete surface. With this configuration, the distance between the vehicle body and the ultrahigh-pressure water pump and the vacuum pump changes as the vehicle body travels. Therefore, two drums are rotatably disposed on the vehicle body, and the ultrahigh-pressure water hose and the vacuum hose are wound around the drums, respectively. It is conceivable that the green cutting operation is performed while unwinding or winding the hose.

[0004]

[Problem to be solved by the invention] However,
Since the vacuum hose collects the scraped latence, the vacuum hose becomes considerably heavy due to the passage of the dirty water containing the latence during the suction of the latence, and the passage of the dirty water containing the latence is performed. As a result, the vacuum hose jumps, and when the vacuum hose is wound around the drum during the suction of the latency, the vacuum hose may be turbulently wound, and the vacuum hose may not be efficiently wound around the drum. The present invention has been made in view of the above circumstances, and has been disclosed in the prior application (Japanese Patent Application No. 2-2538).
No. 92), and an object of the present invention is to provide a green cut machine capable of efficiently and orderly winding a vacuum hose around a drum.

[0005]

In order to achieve the above-mentioned object, the present invention is to spray ultra-high pressure water onto the concrete surface to scrape the latance on the concrete surface, and to suck the scraped latence together with the polluted water. In a green cutting machine, a traveling vehicle body, and a dust collecting case disposed at the front of the vehicle body so as to be movable in the left-right direction of the vehicle body and open downward to contact a concrete surface to form a closed space. An injection nozzle disposed in the dust collection case for injecting ultra-high pressure water for scraping the latence on the concrete surface onto the concrete surface, a drum for a vacuum hose rotatably disposed on the vehicle body, and the vehicle body A latence which is connected to a vacuum pump for latency suction provided at a location distant from and is wound around the drum through a rear portion of the vehicle body A second vacuum hose for feeding, a first vacuum hose for latitudinal conveyance having one end connected to the second vacuum hose at the rotation center of the drum and the other end connected to the dust collection case; A driving unit for driving the drum to rotate, and a pressing mechanism for pressing and urging a second vacuum hose wound around the drum in the direction of the rotation center of the drum around the outer periphery of the drum, wherein the pressing mechanism is provided. An arm whose base end is supported by the outer edge of the drum and whose tip swings in the radial direction of the drum; a free roller attached to the tip of the arm and extending in parallel with the rotation center axis of the drum; And a coil spring for urging the arm to move in the direction of the rotation center of the drum.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a green cutting machine according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof.

First, a schematic configuration of a green cutting machine according to the present embodiment will be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes a green cut machine, and a body 20 of the green cut machine 10 is provided with a wheel group 21 for moving in a front-rear direction and a wheel group 22 for moving in a left and right direction. These are rotated by a power source such as a diesel engine (not shown) mounted on the vehicle body 20, for example.

As shown in FIG. 1, the wheel group 22 is attached to a lower portion of the vehicle body 20 via a hydraulic jack 23, and when moving in the front-rear direction, the wheel group 21 contacts the concrete surface C. The wheel group 22 is floating above the concrete surface C, and when moving in the left-right direction, the hydraulic jack 23 is driven and the wheel group 22 is moved.
2 is lowered to contact the concrete surface C with the ground, and the wheel group 21 is lifted from the concrete surface C accordingly.

As shown in FIG. 1, the vehicle body 20 has a fuel tank 24 for storing fuel of a diesel engine (not shown), a muffler 25 for discharging exhaust gas from the diesel engine, and operation and stop of the diesel engine. Engine operation box 2 with switches such as
6 and a hydraulic oil tank 27 for storing pressure oil supplied to a hydraulic operating portion such as the hydraulic jack 23. As shown in FIGS. 2 and 3, the vehicle body 20 has a hydraulic oil supply path from the hydraulic oil tank 27 to a hydraulic operation part such as a hydraulic jack 23, an ultrahigh-pressure water supply path described later, and a latence. Solenoid valves 28a and 28b for switching and opening / closing a path such as a suction path, and a control panel 29 containing a control unit 203 (FIG. 7) described later for controlling the driving of the green cutting machine 10 are mounted. As shown in FIG. 1, a drum 60, which will be described in detail later, is mounted on the top of the vehicle body 20 on which these are mounted. On the side of the vehicle body 20, as shown in FIG. A ladder 30 reaching the upper surface of the vehicle is provided.

On the other hand, a rectangular protective frame 31 is mounted on the front of the vehicle body 20 as shown in FIG. 2, and casters 33 are mounted on the four corners of the protective frame 31 as shown in FIG. At the same time, the front frame 32 of the protection frame 31
Although not shown, a sensor for detecting an obstacle is attached. A horizontal guide 36 is provided on the front of the vehicle body 20.
As shown in FIG. 2, the horizontal guide 36 is swingably mounted via a hinge 34 and a hydraulic cylinder 35.
Swings in the horizontal direction as the hydraulic cylinder 35 expands and contracts. Also, as shown in FIG.
Is mounted with a vertical guide 40 which is movable in the extending direction thereof. The vertical guide 40 includes a hydraulic cylinder 37, a pulley 38, a belt 39, and the like provided on the horizontal guide 36 as shown in FIG. Is moved in the direction in which the horizontal guide 36 extends.

As shown in FIG. 1, the vertical guide 40 is provided with a bracket 42 which moves up and down by rotating a handle 41, and a gun head 43 is attached to the bracket 42. As shown in FIG. 1, the gun head 43 has a base 44 on which a caster 45 is mounted, a vertically movable dust collecting case 46 provided on the bottom surface of the base 44, and an inside of the dust collecting case 46. Are provided with an injection nozzle 47 formed of, for example, a diamond tip, and a hydraulic cylinder (not shown) for vertically moving the dust collecting case 46.

As shown in FIG. 1, the dust collecting case 46 has a hydraulic hose 49 for supplying pressure oil to a hydraulic cylinder (not shown), and a superfluid for removing latency injected from the injection nozzle 47. A first ultrahigh-pressure water hose 50 for supplying high-pressure water and a dust collection case 4 for removing the removed latencies.
6 is connected to a first vacuum hose 51 for sucking from the inside, and the lower edge of the dust collecting case 46 is contacted with the concrete surface C when the lower edge of the dust collecting case 46 is brought into contact with the concrete surface C. In order to improve the degree of blockage inside the dust collecting case 46, a sealing piece 46a made of an elastic member such as rubber is attached.

The first ultra-high pressure water hose 50 includes:
As shown in FIG. 2, the drum 55 is connected to a water outlet (not shown) of a drum 55 rotatable around a horizontal axis and provided at an upper rear portion of the vehicle body 20, and is connected to a water outlet (not shown). One end of a second ultra-high pressure water hose 56 is connected to a water inlet (not shown), and the second ultra-high pressure water hose 56 is wound around the drum 55 so as to be wound out. The other end of the second ultrahigh-pressure water hose 56 is connected to an ultrahigh-pressure water pump (not shown) provided in a base machine (not shown) installed at a predetermined fixed position apart from the green cutting machine 10. Ultra high pressure water from the ultra high pressure water pump (not shown) is supplied to the injection nozzle 47 via the second ultra high pressure water hose 56, the drum 55, and the first ultra high pressure water hose 50, The injection nozzle 47 injects the air onto the concrete surface C.

On the other hand, one end of the first vacuum hose 51 is connected to the drum 60 as shown in FIGS.
A second vacuum hose 63 is connected to a first joint 61 disposed at the center of rotation of the drum 60 and a second joint 62 disposed at the center of rotation of the drum 60.
Are connected at one end. And as shown in FIG.
The other end of the first vacuum hose 51 passes under the front part of the drum 60 and is drawn out to the front of the drum 60 so that the dust collection case 4
6 and the other end of the second vacuum hose 63 passes through the rear part of the vehicle body 20 to a vacuum pump (not shown) provided in the base machine (not shown). The latence scraped off from the surface C, together with the contaminated water that is contaminated by the ultra-high pressure water being sprayed on the concrete surface C, is driven from the dust collecting case 46 by the driving of the vacuum pump.
Through the vacuum hose 51, the first joint portion 61, the drum 60, the second joint portion 62, and the second vacuum hose 63, the air is sucked into the base machine (not shown), and the dust is collected on the base machine. The water is sent to another location as treated water.

As shown in FIG. 4, the drum 60 is rotatable about a vertical axis V by driving a driving unit K including a motor 64, a pulley 65, a belt 66, and the like. As shown in FIG. 4, 63 is fed or wound in the order shown by the arrow A. In the wound state, for example, four rows (in the width direction of the drum 60)
It is wound around the drum 60 so as to have four stages (same radial direction).

A water outlet (not shown) of the drum 55,
The first joint portion 61 of the drum 60 is always directed in a fixed direction without interlocking with the rotation of each of the drums 55 and 60.

As shown in FIG. 2, the drum 60 is provided with a pressing mechanism 70 for pressing the second vacuum hose 63 wound around the drum 60 toward the center of the drum 60. . This holding mechanism 70 is shown in FIG.
As shown in (a) and (b), a base 71 attached to the outer edge of the drum 60, a shaft 72 rotatably attached to the base 71, and a base 72 attached to the shaft 72 and attached to the base 71. The end of the drum 60 is swingable.
And a free roller 74 rotatably attached to the open end of the arm 73 and extending parallel to the rotation center axis of the drum 60. Reference numeral 73 is constantly urged toward the center of the drum 60 by a coil spring 75. Then, by the urging of the coil spring 75, the peripheral surface of the free roller 74 comes into contact with the second vacuum hose 63 wound around the drum 60, and is urged toward the center of the drum 60. I have.

The base 71 is provided with a winding step number detecting unit 76 for detecting the number of winding steps of the second vacuum hose 63 wound around the drum 60 in the radial direction of the drum 60. Have been. The winding stage number detecting unit 76 is provided at the swing position of the arm 73, and
It has a limit switch (not shown) for detecting the number of winding stages of the vacuum hose 63. The limit switch is, for example, one or two winding stages, two to three stages, and three to four winding stages.
For example, a signal that changes according to the number of winding steps of the second vacuum hose 63 around the drum 60 is output to a control unit 203 (FIG. 7) housed in the control panel 29, which will be described later.

As shown in FIG. 1, a guide mechanism 80 is provided near the drum 60 for guiding the second vacuum hose 63 when the second vacuum hose 63 wound around the drum 60 is fed and wound. Is provided. As shown in FIG. 1, the guide mechanism 80 has a guide rail 81 erected near the drum 60 and having a length corresponding to the height of the drum 60, and can move up and down along the guide rail 81. A slide member 82, a hydraulic cylinder 83 for moving the slide member 82 up and down along a guide rail 81, and a hydraulic cylinder 83 disposed between the guide rail 81 and the peripheral surface of the drum 60 Feeding portion 63 of the second vacuum hose 63
a, a winding row position detecting section 84 for detecting a winding row position in the width direction of the drum 60, and an upright standing side opposite to the winding row position detecting section 84 across the guide rail 81. And a guide member 88 provided.

As shown in FIG. 1, the slide member 82 has a pair of upper and lower free rollers 82a and 82b, and a second vacuum hose fed from the drum 60 is provided between the free rollers 82a and 82b. 63 is inserted. The hydraulic cylinder 83 is provided with a plurality of proximity switches (not shown) for detecting the extension length of the cylinder rod 83a. The proximity switches are arranged at three positions, i.e., at a position of 100 mm and at a position of 200 mm of the extension length.
, A detection signal is output to a control unit 203 (FIG. 7) described later.

Further, the winding train position detecting section 84 is provided in the state shown in FIG.
, A guide rail 85 having a length corresponding to the height of the drum 60, and a guide which can move up and down along the guide rail 85, and through which a feeding portion 63 a of the second vacuum hose 63 is inserted. It comprises a ring 86 and a limit switch 87 for detecting the position of the guide ring 86 on the guide rail 85 and, consequently, the winding position of the feeding portion 63a of the second vacuum hose 63.

The limit switch 87 is connected to the winding portion 63 of the second vacuum hose 63, for example, in a winding row position of 1 to 2 rows, 2 to 3 rows, or 3 to 4 rows.
The signal which changes in accordance with the winding position of the drum a with respect to the drum 60 is transmitted to a later-described control unit 203 accommodated in the control panel 29.
(FIG. 7). On the other hand, the guide member 88 is shown in FIG.
, A pair of free rollers 88a and 88b having a vertical direction as an axial direction is provided.
88b, the guide ring 86 and the slide member 8
2, a second vacuum hose 63 extending from the drum 60 to the base machine (not shown) is inserted.

Next, a schematic configuration of a control system provided in the control panel 29 of the green cutting machine 10 will be described with reference to a block diagram of FIG. In FIG.
0 is a control system, and this control system 200
Encoder 201 for detecting rotation speeds of 1, 22
An encoder 202 for detecting a rotation speed of a motor 64 for rotating the drum 60;
And a control unit 203 for controlling the rotation of the hydraulic cylinder 83 and the expansion and contraction operation of the hydraulic cylinder 83 of the guide mechanism 80.

The control unit 203 detects the amount of movement of the green cut machine 10 with respect to the base machine (not shown) based on the detection result of the encoder 201, and based on the detected amount, moves the base machine (not shown). To the green cutting machine 10 and the motor 64 is moved in a predetermined direction by a predetermined amount so that the length of the second vacuum hose 63 fed from the drum 60 becomes a length corresponding to the distance. Rotate. Further, the control unit 203 is configured to control the second winding on the drum 60 based on an input signal from the winding stage number detection unit 76.
The number of windings of the vacuum hose 63, that is, the number of windings of the second vacuum hose 63 in the radial direction of the drum 60 is determined. Based on the determination result, the number of windings of the second vacuum hose 63 on the drum 60 is determined. Is controlled so that the rotational torque of the motor 64 is increased in a stepwise manner each time is increased.

Further, the control section 203 expands and contracts a cylinder rod 83a of a hydraulic cylinder 83 of the guide mechanism 80 based on an input signal from a limit switch 87 of the guide mechanism 80, and moves the cylinder rod 83a along the guide rail 81. The slide member 82 reciprocating up and down moves up and down so as to follow a change in the position of the delivery portion 63a of the second vacuum hose 63 wound around the drum 60. Specifically, as shown in the relationship diagram of FIG.
When the winding row position of the delivery portion 63a of the vacuum hose 63 is one or two rows, the cylinder rod 8
When the extension stroke of the cylinder rod 83a is 200 mm, the extension stroke of the cylinder rod 83a is 100 mm when the extension stroke of the cylinder rod 83a is two or three rows, and the extension stroke of the cylinder rod 83a is 0 m when the extension stroke of the cylinder rod 83a is three or four rows.
m, the control unit 203 controls the cylinder rod 8
The control unit 203 controls the expansion and contraction operation of 3a, and performs the feedback control while monitoring the detection signal from the proximity switch (not shown) attached to the hydraulic cylinder 83 during the expansion and contraction control.

Although not described in detail here, the control unit 203 includes, for example, a remote controller operated at a position distant from the green cut machine 10 and an operation unit (not shown) provided in the green cut machine 10. Z)
Or, based on the operation of a switch of an operation panel provided on the base machine side (not shown), the driving of the wheel groups 21 and 22, the operation of a hydraulically operating portion such as the hydraulic jack 23, etc.
The operation of various driving parts attached to the green cutting machine 10 is controlled.

Now, in the green cutting operation using the green cutting machine 10 of the present embodiment configured as described above, an ultra high pressure water pump or a vacuum pump (not shown) and the injection nozzle 47 for injecting the ultra high pressure water, The dust collecting case 46 and the like for suction of the latence are separated, and the injection nozzle 47 is separated.
Cutting machine 1 equipped with a dust collecting case 46 and the like
Work is performed by traveling and moving only 0 on the concrete surface C.

In the operation, the sealing piece 46a provided on the lower edge of the dust collecting case 46 is brought into contact with the concrete surface C, and the gun head 43 is reciprocated in the extending direction of the horizontal guide 36 in this state. By moving the green cutting machine 10 in a desired direction, the dust collecting case 4 closed with the concrete surface C is closed.
In 6, ultra-high pressure water is sprayed from the spray nozzle 47 onto the concrete surface C to scrape latencies on the concrete surface C. Further, by driving a vacuum pump provided in the base machine (not shown), the scraped latence and the polluted water together with the contaminated water are used to remove the first and second vacuum hoses 51 and 63 from inside the closed dust collecting case 46. Then, it is sucked to the base machine side and removed from the concrete surface C.

In this case, in the green cutting machine 10 of this embodiment, the distance between the green cutting machine 10 and the base machine (not shown) changes with the movement thereof. The second vacuum hose 63 has a certain length, and is wound around the drums 55 and 60, respectively, as described above, and is unwound from the drums 55 and 60 by a required length. In the green cutting machine 10 according to the present embodiment, in particular, the rotation amount of the drum 60 around which the second vacuum hose 63 is wound is controlled by the control unit 203, whereby the second vacuum fed out from the drum 60 is controlled. The length of the hose 63 is adjusted, and the rotational torque at the time of rotation of the drum
It is changed according to the number of winding steps of the vacuum hose 63. Further, a holding mechanism 70 and a guide mechanism 80 are attached to the drum 60, and when the second vacuum hose 63 is fed out or wound up from the drum 60, a second
The vacuum hose 63 is prevented from rolling or sagging.

As described above, in the green cutting machine 10 of the present embodiment, the free roller 74 provided at the tip of the arm 73 of the pressing mechanism 70 presses the second vacuum hose 63 wound around the drum 60. The drum 60 is moved by the rebound of the second vacuum hose 63 described above.
The second vacuum hose 63 wound around is not slack and can be wound compactly.

In this embodiment, the holding mechanism 70 is
The second vacuum hose 63 wound around the drum 60
Is provided with the winding step number detecting section 76 for detecting the number of winding steps, but the winding step number detecting section 76 may be omitted and the pressing mechanism 70 may be attached to the drum 60 as a single unit. . The means for pressing the second vacuum hose 63 wound around the drum 60 toward the center of the drum 60 is not limited to the one shown in the present embodiment, but may be other means.

Further, in this embodiment, the structure in which the pressing mechanism 70 is attached to the drum 60 so that the second vacuum hose 63 is wound around the drum 60 in an orderly manner has been described. Is applicable to the drum 55 around which the second ultrahigh-pressure water hose 56 is wound.

[0033]

As described above, in the green cutting machine according to the present invention, the second vacuum hose wound around the drum is attached to the periphery of the drum around which the second vacuum hose is wound, in the direction of the rotation center of the drum. Is provided, the weight of the second vacuum hose is increased by the suction of the latence, and even when the second vacuum hose jumps, the pressing mechanism causes the second vacuum hose to drum. , The second vacuum hose can be wound around the drum efficiently and tidyly. Therefore, the green cutting operation can be performed without hindering the winding of the second vacuum hose, and the efficiency of the green cutting operation by the green cutting machine can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a green cutting machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the green cutting machine shown in FIG.

FIG. 3 is a front view of the green cutting machine shown in FIG.

FIG. 4 is an explanatory diagram showing a schematic configuration of a drum around which the second vacuum hose shown in FIG. 1 is wound.

FIG. 5 shows a schematic configuration of a holding mechanism shown in FIG. 2;
FIG. 5A is a plan view, and FIG. 5B is a front view.

FIG. 6 is an explanatory diagram illustrating a schematic configuration of a winding row position detecting unit illustrated in FIG. 1;

FIG. 7 is a block diagram illustrating a schematic configuration of a control system that controls driving of the green cut machine illustrated in FIG. 1;

FIG. 8 is an explanatory diagram showing the control content of the advance stroke of the cylinder rod by the control unit in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Green cut machine 20 Body 47 Injection nozzle 51, 63 1st, 2nd vacuum hose 60 Drum 63a 2nd vacuum hose extension part 70 Holding mechanism C Concrete surface K Drive part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-106212 (JP, A) JP-A-4-131465 (JP, A) JP-A-5-106212 (JP, A) 96431 (JP, B2) (58) Field surveyed (Int. Cl. ⁶ , DB name) E04G 21/02 103

Claims (1)

(57) [Scope of request for utility model registration] An ultra-high pressure water is sprayed on said concrete surface.
And scrape the latence on the concrete surface.
Green that sucks laid latencies together with polluted water
In a cutting machine, a movable body is provided, and a movable body is provided at a front portion of the body so as to be movable in the left-right direction of the body.
It is open downward and contacts the concrete surface to form a closed space.
A dust collecting case, a spray nozzle disposed in the dust collecting case, for spraying ultra-high pressure water for scraping latance on the concrete surface to the concrete surface, and a vacuum hose rotatably disposed on the vehicle body. and <br/> drum use, the de through the back of the vehicle body is connected to a vacuum pump for Reitansu suction provided at a position distant from the said body
Second vacuum hose for conveying the latency wound on the ram
And one end of the drum at the center of rotation of the drum.
The other end is connected to the
1st vacuum hoe for latance transfer connected to
Graphics and, e Bei a driving unit for rotationally driving the drum, second Vacu wound around the drum to the outer circumferential portion of the drum
Presses and pushes the hose in the direction of the rotation center of the drum.
A presser mechanism , the presser mechanism having a base end supported at the outer edge of the drum,
An arm whose end swings in the radial direction of the drum;
Attached to the end and extends parallel to the axis of rotation of the drum
Free roller, and the free roller is rotating the drum.
A coil split that urges the arm to move in the direction of the center
Green cut machine, wherein is composed of a ring, that.