JPH1161727A - Road-surface treatment working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the injection pressure of an injection nozzle constant at all times while removing an obstruction in a sensor region by a detecting sensor, and to carry out detection with excellent accuracy. SOLUTION: The road-surface treatment working machine has a high-pressure water injector 25 being installed to a long-sized guide member 11 in the car- breadth direction mounted on a machine body 1 and having a laterally movable injection nozzle 23 along the guide member 11, a detecting sensor 48 detecting an inclination in the horizontal direction of the guide member 11, an obstruction removing injection nozzle 51 blowing off an obstruction in the sensor region of a paving surface hot treated 49 detected by the detecting sensor 48 by injection pressure and a height adjusting device 21 vertically moved to the high- pressure water injector 25 and an injected road surface on the basis of a detecting signal from the detecting sensor 48. The injection nozzle 23 is kept in the same height to the injected road surface at all times, and constant injection pressure is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface treating machine for performing a filing operation and a roughening operation on a road surface by injecting high-pressure water.

[0002]

2. Description of the Related Art Conventionally, a scissoring operation or a roughening operation is performed at the time of repairing a damaged road surface or for producing frictional resistance of the road surface.

[0003] In the filing operation and the roughing operation, a high-pressure water is injected from an injection nozzle to a road surface to break a weak portion of the road surface and form an uneven surface on the road surface. The injection nozzle is configured to reciprocate from end to end of a road surface serving as a work range while laterally moving left and right along a guide member.

[0004]

The injection energy at which the high-pressure water injected from the injection nozzle acts on the road surface is determined by the height from the road surface, assuming that the injection pressure is constant. Becomes stronger. Further, since the injection energy becomes weaker as the distance from the road surface increases, for example, when the injection nozzle moves up and down due to uneven road surface, there are places where the injection nozzle is dug deeply and places where the injection nozzle is dug shallowly, causing a problem that the processing surface is not constant. .

[0005] Particularly, the surface of the road surface is, for example, 10 to 20 mm.
This is a big problem in rough work in which uniform flying is performed as much as possible.

Accordingly, the present invention provides a road surface processing machine capable of making the injection pressure of an injection nozzle always constant, eliminating obstacles in a sensor area by a detection sensor, and performing accurate detection. The purpose is to do.

[0007]

In order to achieve the above object, the present invention provides an injection nozzle which is mounted on a guide member which is provided in an airframe and which is long in the vehicle width direction and which can move laterally along the guide member. A high-pressure water injection device, a detection sensor for detecting a horizontal inclination of the guide member, an obstacle removal injection nozzle for blowing off an obstacle in a sensor area of an untreated pavement surface detected by the detection sensor by the injection pressure, and detection. The apparatus includes the high-pressure water injection device and a height adjustment device that moves up and down with respect to the injection road surface based on a detection signal from a sensor.

[0008] As a detection sensor, there is an ultrasonic or optical sensor for detecting the height to the untreated pavement surface, in addition to the vertically movable support wheels running on the untreated pavement surface.

It is desirable that the obstacle elimination nozzle be a means for injecting either wind pressure or water pressure.

According to the road surface treatment machine, the pavement surface damaged by high-pressure water injected from the injection nozzle of the high-pressure water injection device is crushed and blown off.

During the road surface treatment operation, the injection nozzle of the high-pressure water injection device moves up and down based on a detection signal from the detection sensor, so that the same height is always maintained with respect to the injection road surface and a constant injection pressure is maintained. can get. Further, in the sensor area of the detection sensor, for example, obstacles such as crushed pieces blown off by the high-pressure water injection device can be reliably removed by the injection pressure injected from the obstacle elimination injection nozzle, and accurate detection can be performed. Become so.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes an airframe of a road surface treatment machine 3, which can be self-propelled by running wheels 5 driven by power from a driving unit (not shown).
A guide member 11 long in the vehicle width direction is mounted and supported in front of the body 1 by a link mechanism constituted by a pair of left and right support arms 7 and 9.
3 allows the positioning at a predetermined height.

The hydraulic device 13 comprises a cylinder 15 and an extendable piston rod 17. The cylinder 15 is attached to the body 1, and the piston rod 17 is attached to a bracket 19 provided on the guide member 11. The expansion and contraction of 17 makes it possible to position the guide member 11 at a predetermined height.

The guide member 11 is provided with a high-pressure water injection device 25 having an injection nozzle 23 that can be moved laterally along the guide member 11 by the lateral movement device 21.

As shown in FIG. 3, the lateral moving device 21 runs along a guide rail surface 31 of the guide member 11 on a lateral moving main frame 29 having a vertically moving main frame 27 on which a high-pressure water injection device 25 is supported. Guide rollers 33, 33 facing each other up and down, and a driving gear 37 driven by a hydraulic motor 35 so as to be able to rotate forward and backward are provided, and the driving gear 37 is a rack 39 provided along the guide member 11. And are engaged. As a result, the drive gear 37 meshing with the rack 39 rotates forward or reverse, thereby causing the main frame 2 to move laterally.
9, that is, the injection nozzle 23 can move laterally along the guide member 11.

The hydraulic motor 35 is driven based on the detection signals from the side detection switches S1 and S2 when the lateral movement main body frame 29 comes into contact with the side detection switches S1 and S2 provided on both sides of the guide member 11. The rotation is controlled to be forward or reverse.

The vertically movable main frame 27 on which the high-pressure water injection device 25 is supported is, as shown in FIGS.
Thereby, it is possible to control the horizontal movement main frame 29 so as to be able to move up and down freely.

The height adjusting device 41 includes a screw rod 43 provided on the side of the horizontal movement main body frame 29 and a drive motor 45 for applying a forward or reverse rotation power to the screw rod 43. The vertical movement main frame 27 is screwed.

Thus, when the screw rod 43 rotates forward or backward, the vertical movement main frame 27 is guided by the left and right guide members 45 provided on the horizontal movement main frame 29 and can move up and down. Has become.

A drive motor 45 for applying forward or reverse rotation power to the screw rod 43 is provided on a support wheel 4 serving as a detection sensor 48.
The operation is controlled so as to rotate forward or reverse based on the detection signal from.

As shown in FIG. 3, the support wheel 47 runs on the untreated pavement surface 49, and the sensor area of the untreated pavement surface 49 on which the support wheel 47 travels is determined by the injection pressure of the obstacle rejection injection nozzle 51. Thus, for example, obstacles such as crushed pieces crushed by the high-pressure water injection device 25 are blown off and removed.

The obstacle elimination jet nozzle 51 is connected to a compressor (not shown) so that high-pressure air is blown out. In this case, it is also possible to inject a predetermined water pressure.

The upper end of the support wheel 47 is
Are mounted and supported so as to be able to move vertically. The support member 53 includes a conversion unit (not shown) that converts the up and down movement of the support wheel 47 that moves up and down under conditions such as unevenness into an electric signal and sends it to the control unit 55. I have. This allows the drive motor 45 to rotate forward or backward in response to a signal from the control unit 55, thereby making it possible to adjust the vertical movement of the injection nozzle 23 in response to irregularities, and always maintain a constant height with respect to the injection road surface. It is supposed to be.

On the other hand, the injection nozzle 2 of the high-pressure water injection device 25
3 is connected to a water tank of a water tank truck (not shown) so that high-pressure water whose pressure has been increased by a high-pressure pump (not shown) is sent through a high-pressure hose 57. The injection nozzle 23 is configured to perform the injection at a predetermined angle with respect to the vertical line, and performs the injection while rotating by 360 degrees by the drive motor 59.

According to the road surface treatment machine 3 configured as described above, the high-pressure water is jetted toward the road surface while the jet nozzle 23 is moved laterally along the guide member 11 to thereby perform a chipping operation or a roughing operation. Can be done. In this operation, when the body 1 is tilted due to road surface conditions, the guide member 11 also tilts accordingly, and the tilt is detected by the expansion and contraction of the support wheel 47.

In this case, the sensor area of the support wheel 47 running on the untreated pavement surface 49 becomes an obstacle due to crushed fragments and the like, and this obstacle is caused by the injection pressure injected from the obstacle removal injection nozzle 51. Since it is reliably removed, accurate detection can be performed.

On the other hand, the detection signal detected by the support wheel 47 causes the drive motor 45 to rotate forward or reverse through the control unit 55. As a result, the injection nozzle 23 moves up and down in accordance with the amount of inclination of the guide member 11, and is always positioned at the same distance from the injection path surface. As a result, a constant injection pressure is secured and a uniform processing surface is obtained.

6 and 7 show another embodiment of the detection sensor 48. FIG.

That is, the guide member 11 is of an ultrasonic type in which a plurality of ultrasonic sensors 61 for measuring the distance to the pavement surface by emitting ultrasonic waves to the untreated pavement surface 49 are arranged. The ultrasonic sensor 61 sends the detection signal to the control unit 6.
3 and is fixed to the guide member 11.

In this case, as shown in FIG. 9, a movable type in which the ultrasonic sensor 61 can be moved right and left by a driving means 64 such as a chain may be used.

The control unit 63 performs arithmetic processing based on the detection signal from each ultrasonic sensor 61, and rotates the drive motor 59 forward or backward in accordance with the amount of inclination of the guide member 11, and causes the ejection nozzle 23 to eject the ejection nozzle 23. It is controlled so that it is always at the same height from the road surface.

The detection sensor may be an optical sensor such as a laser.

In the sensor area of the unprocessed pavement surface 49 from which the ultrasonic waves are emitted, obstacles such as crushed pieces crushed by the high-pressure water injection device 25 are blown off by the injection pressure of the obstacle elimination injection nozzle 65. , Are to be removed.

In this case, as shown in FIG.
The combination of providing the skirt member 67 for preventing scattering around the periphery of 3 makes it possible to minimize the scattering of obstacles to the sensor area of the untreated pavement surface 49.

The other components are the same as those shown in FIG.

According to the road surface treatment machine 3 constructed as described above, the high-pressure water is jetted toward the road surface while the jet nozzle 23 is moved laterally along the guide member 11, so that the chipping or roughing operation is performed. Can be done. In this operation, when the body 1 is tilted due to road surface conditions, the guide member 11 also tilts accordingly, and the tilt is detected by the ultrasonic sensor 61.

In this case, the sensor area for detecting the untreated pavement surface 49 becomes an obstacle due to crushed pieces and the like, but is reliably removed by the injection pressure injected from the obstacle removal injection nozzle 65. Accurate detection can be performed.

On the other hand, the detection signal detected by the ultrasonic sensor 61 causes the control motor 63 to rotate the drive motor 59 forward or backward. As a result, the injection nozzle 23 moves up and down in accordance with the amount of inclination of the guide member 11, and is always positioned at the same height with respect to the injection path surface. As a result, a constant injection pressure is secured and a uniform processing surface is obtained. Can be

[0040]

As described above, according to the road surface treatment machine of the present invention, the detection sensor always keeps the injection nozzle at a constant height with respect to the injection road surface in accordance with the inclination of the body. And a uniform treated surface can be obtained.

In the sensor area of the detection sensor, obstacles are removed, and accurate detection can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a road surface treatment working machine according to the present invention.

FIG. 2 is a schematic front view of a road surface treatment working machine.

FIG. 3 is an enlarged schematic explanatory view of a main part showing a mounting state of a support wheel serving as a detection sensor.

FIG. 4 is a schematic explanatory view of the lateral movement device as viewed from above.

FIG. 5 is a schematic explanatory view of a height adjusting device.

FIG. 6 is a schematic side view similar to FIG. 1 in which an ultrasonic sensor is used as a detection sensor.

FIG. 7 is a schematic front view of FIG. 6;

FIG. 8 is a schematic side view similar to FIG. 1 in which a skirt member for preventing scattering is provided on the injection nozzle.

FIG. 9 is a schematic front view similar to FIG. 7, in which the ultrasonic sensor is a movable type capable of moving left and right.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 11 Guide member 21 Height adjustment device 23 Injection nozzle 25 High-pressure water injection device 48 Detection sensor 49 Untreated pavement surface 51 Obstacle elimination injection nozzle

Continuation of front page (72) Inventor Jin Noda 1-6-5 Shimbashi, Minato-ku, Tokyo Japan Road Co., Ltd.

Claims (4)

[Claims] 1. A high-pressure water injection device which is mounted on a guide member long in a vehicle width direction provided on an airframe and has an injection nozzle which can move laterally along the guide member, and detects a horizontal inclination of the guide member. Detection sensor, an obstacle removal injection nozzle that blows off an obstacle in the sensor area of the untreated pavement surface detected by the detection sensor by the injection pressure, and the high-pressure water injection device and the injection road surface based on a detection signal from the detection sensor. A road surface treatment working machine comprising: a height adjustment device that moves up and down. 2. The detection sensor according to claim 1, wherein the detection sensor is a vertically movable support wheel traveling on an untreated pavement surface.
The road surface treatment machine described. 3. The road surface treatment machine according to claim 1, wherein the detection sensor is one of an ultrasonic wave and an optical sensor for detecting a height up to an untreated pavement surface. 4. The road surface treatment machine according to claim 1, wherein the obstacle elimination jet nozzle jets one of wind pressure and water pressure.