JP2775365B2 - Green cutting work method - 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 method.

[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, while holding the ultra high pressure water injection nozzle by hand and jetting ultra high pressure water from the ultra high pressure water injection nozzle to scrape the concrete surface, there is also a limit to manual work over a wide range of concrete surface. is there. Therefore, it is conceivable to mount an ultrahigh-pressure water injection nozzle on a vehicle and perform a green cutting operation while running the vehicle.

[0003]

In this case, it is conceivable that the operation of scraping the latence, the operation of collecting the shaved latence, and the operation of collecting the polluted water are performed separately. In addition, three work vehicles are required, and work time is required, so that work efficiency cannot be improved. Furthermore, if the work of scraping latencies and the work of collecting latencies were performed separately, when collecting latencies,
It becomes necessary to inject high-pressure water again, and a large amount of water is wasted. The present invention has been devised in view of the above circumstances, and relates to an improvement of an earlier application (Japanese Patent Application No. 253892/1990). An object of the present invention is to work to cut latencies and to cut latencies. An object of the present invention is to provide a green-cut operation method that can effectively and simultaneously perform operations for collecting latencies and polluted water by using a single work vehicle, thereby improving the efficiency of green-cut operations.

[0004]

In order to achieve the above-mentioned object, the present invention provides an ultra-high-pressure water jet nozzle which rotates an ultra-high-pressure water jet nozzle in a plane parallel to a concrete surface, while applying the ultra-high-pressure water jet to the concrete surface. A green cutting work method for cutting a latence by spraying, wherein a closed space is provided so as to cover the vicinity of the outside of the ultra high pressure water injection nozzle between a single ultra high pressure water injection nozzle and a concrete surface, and the closed space is provided. While rotating the ultra-high pressure water injection nozzle in the interior, the ultra-high pressure water injection nozzle injects ultra-high pressure water to the concrete surface, scrapes the latence on the concrete surface with the injected ultra-high pressure water, and simultaneously sprays the concrete surface The contaminated water generated by the ultra-high pressure water and the shaved latence outside the ultra-high pressure water injection nozzle and in the closed space. In the vicinity of the concrete surface,
It is characterized in that the ultra-high pressure water is sprayed on the concrete surface and is sucked and collected by a vacuum action while utilizing the momentum of the polluted water which rebounds.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a schematic configuration diagram of a green cutting work device. The green-cut operation device 1 is composed of three units: an ultrahigh-pressure water supply unit 3, an operation unit 5, and a mud collection unit 7, and these three units 3, 5, 7
Are configured to be separable. Ultra high pressure water supply unit 3
Is an engine 11, a water supply pump 13, an ultra-high pressure water pump 1
5, a filtering device 17, a water supply tank 19, and the like. These components and members are mounted on a support frame 21 to form a unit.

The water supply pump 13 and the ultra-high pressure water pump 15 are driven by the engine 11, and the construction water is supplied to the water supply tank 19 through the filtration device 17 by the water supply pump 13. Water pump 15
Is sent out through the ultra high pressure water hose 23. As shown in FIG. 2, the ultrahigh-pressure water supply unit 3 having such a configuration can be mounted on the ultrahigh-pressure water supply unit automatic guided vehicle 25 via the support frame 21, and together with the mud collection accommodating unit 7. It can be mounted on other vehicles.

As shown in a side view in FIG. 3 and a plan view in FIG. 4, the working unit 5 is movably supported by an automatic guided vehicle 29. The automatic guided vehicle 29 includes a first wheel group 31 including two front wheels and two rear wheels, and a second wheel group 33 including two left wheels and two right wheels that can be moved up and down. Then, the vehicle travels in the lateral direction by lowering the second wheel group 33. The body 35 of the automatic guided vehicle 29
Includes a hydraulic oil tank 37, a fuel tank 39, an engine,
A control panel 41, an engine operation box 43, and an engine muffler 45 are provided. Further, a take-up and delivery mechanism 49 for the ultra-high pressure water hose 23 is provided at a rear portion of the vehicle body 35, and a vacuum hose is provided at an upper portion of the vehicle body 35. A take-up / delivery mechanism 53 of 51 is provided.

The take-up and pay-out mechanisms 49 and 53 for the ultra high pressure water hose 23 and the vacuum hose 51 are connected to the vehicle body 35.
The hoses 23, 51 are wound or unwound by the power of the engine as the vehicle travels.
3A is appropriately driven to rotate, and the ultra-high pressure water hose 23 is connected at the center of the drum 49A to an ultra-high pressure water hose 57 connected to the injection nozzle 55 side for injecting ultra-high pressure water,
The vacuum hose 51 is connected to a vacuum hose 59 connected to the ejection nozzle 55 at the center of the drum 53A.

The injection nozzle 55 is arranged at the front of the vehicle body 35. More specifically, a horizontal moving mechanism 65 including a hydraulic cylinder 61, a horizontal guide 63, and the like is provided at the front of the vehicle body 35. The horizontal moving mechanism 65 includes a vertical moving mechanism 69 including a ball screw 67 and the like. The horizontal guide 65 is tiltably connected to the vehicle body by a hydraulic cylinder 71. In addition, the vertical movement mechanism 6
A bogie 75 is connected to a front part of the vehicle 9 via a joint 73 so as to be able to roll and pinch. Trolley 7
5 is supported by four caster wheels 77,
The gun head 79 is supported via a vertical adjustment mechanism 83 including a hydraulic cylinder 81 and the like, and the injection nozzle 55 is supported at the lower end of the gun head 79.
Is connected to the gun head 79. These lateral moving mechanism 65, up and down moving mechanism 69, bogie 7
5. The gun head 79 is disposed in a frame-shaped touch sensor mount 85 with casters attached to the front of the vehicle body 35.

As shown in FIG. 5, the injection nozzle 55 protrudes from the lower surface of the gear case 87 below the gun head 79. The injection nozzle 55 has a large number of injection holes formed of diamond chips on the lower surface thereof. Is transmitted to the gear train in the gear case 87 and the injection nozzle 5
Numeral 5 ejects ultra-high pressure water from its ejection holes while being eccentrically rotated by a gear train in a plane parallel to the concrete surface C. In addition, a bellows 89 that can expand and contract vertically extends from the lower surface of the gear case 87 so as to cover the periphery of the injection nozzle 55,
A housing 91 is supported at the lower end of the bellows 89, and a super-abrasion-resistant rubber plate 92 is attached to a side surface of the housing 91. The horizontal movement of the housing 91 with respect to the carriage 75 is regulated by appropriate members, and an opening 93 for injecting the ultra-high pressure water from the injection nozzle 55 onto the concrete surface is formed on the upper surface of the housing 91, Further, suction ports 95 for sucking latencies together with the contaminated water are provided at both ends of the upper surface of the housing 91 located outside the bellows 89 at the left and right sides of the vehicle body.
Is connected to the vacuum hose 59. The housing 91 may be supported by the carriage 75 via a mounting piece or the like. Then, the bellows 89, the housing 91 and the rubber plate 9
2, a substantially closed closed space 97 is formed between the concrete surface C and the single injection nozzle 55 so as to cover the vicinity of the outside of the injection nozzle 55.

As shown in FIGS. 1 and 2, the sludge collecting unit 7 includes a vacuum pump 101 for sucking the latence scraped off by the ultra-high pressure water together with the contaminated water via the vacuum hoses 59 and 51. Vacuum pump 1
01 and the vacuum hose 5
A mud collecting tank 105 for storing the latencies collected through the vacuum pumps 101 and 51;
The engine 103 and the mud collecting tank 105 are mounted on a support frame 107 and are unitized. Mud collection tank 105
The dust inside is collected and discharged to an appropriate place, and the moisture is sent to another place as treated water.

Next, the green cutting operation will be described. The injection nozzle 55 is reciprocated in the lateral direction by the lateral movement mechanism 65 as the vehicle body 35 travels. Then, inside the closed space 97, the ultra-high pressure water is injected from the injection nozzle 55 to the concrete surface C, and the latency is scraped off. Then, due to the momentum of the polluted water that is jetted onto the concrete surface C and rebounds, and the vacuum action acting on the suction port 95, the shaved latence is efficiently sucked from the suction port 95 together with the polluted water, From inside the housing 91 via the vacuum hoses 59 and 51, the housing 9
Sent outside.

Therefore, according to the present embodiment, the scraped litance is sucked and collected together with the contaminated water in the vicinity of the concrete surface where the ultra-high pressure water is sprayed. It is possible to simultaneously and effectively perform the work of collecting the collected latencies and polluted water. In addition to the vacuum effect,
Since the ultra-high pressure water is sprayed on the concrete surface C and the turbulent water that rebounds can be used to recover latencies, it is possible to recover latencies more effectively. Further, a closed space 97 is provided between the injection nozzle 55 and the concrete surface C so that the ultra-high pressure water is injected into the concrete surface C and the latency and the contaminated water are collected inside the closed space 97. As a result, it is possible to more effectively perform the recovery work of the latency and the contaminated water by using the momentum of the repulsion of the contaminated water while preventing scattering of the latency and the contaminated water. Furthermore, since the recovery work of latencies and polluted water is performed using the momentum of polluted water rebound,
No washing water or the like for concrete surface cleaning is required separately from the water jetted from the jet nozzle 55. Therefore, the working unit 5 can be configured with a minimum number of members, and a minimum capacity is required for recovery of latencies. The vacuum pump 101 and the tank 105 having the minimum capacity can be used, which is advantageous in reducing the size and cost of the apparatus, and is also advantageous in reducing the operating cost.

[0014]

As is clear from the above description, the present invention
A green cutting work method in which the ultra-high pressure water injection nozzle is rotated in a plane parallel to the concrete surface and the ultra-high pressure water injection nozzle injects the ultra-high pressure water onto the concrete surface to cut the latencies. A closed space is provided between the injection nozzle and the concrete surface so as to cover the vicinity of the outside of the ultrahigh-pressure water injection nozzle, and the ultrahigh-pressure water injection nozzle is rotated from the ultrahigh-pressure water injection nozzle in the closed space while rotating the ultrahigh-pressure water injection nozzle. Water is sprayed on the concrete surface, the latence on the concrete surface is scraped off by the sprayed ultra-high pressure water, and at the same time, the polluted water generated by the ultra-high pressure water sprayed on the concrete surface, and the shaved latence are removed by the ultra-high pressure water. Outside the high-pressure water injection nozzle and near the concrete surface in the closed space, the ultra-high pressure water Since the suction and recovery of the polluted water that is shot and rebound is performed by suction while collecting, the work of scraping the latence and the work of collecting the scraped latence and the polluted water can be performed simultaneously by one work vehicle. It can be performed effectively and the efficiency of green cutting can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a green cutting work device.

FIG. 2 is an explanatory diagram when a green cutting operation is performed.

FIG. 3 is a side view of the working unit.

FIG. 4 is a plan view of the working unit.

FIG. 5 is an enlarged view of an injection nozzle portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Green cut working device 3 Ultra high pressure water supply unit 5 Working unit 7 Mud collecting unit 23,57 Ultra high pressure water hose 51,59 Vacuum hose 55 Injection nozzle 91 Housing 92 Rubber plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E02B 7/00 E04G 21/02 103

Claims (1)

(57) [Claims] 1. An ultra-high pressure water injection nozzle on a concrete surface
A green-cutting work method in which ultra-high-pressure water is sprayed from a super-high-pressure water injection nozzle onto a concrete surface while rotating in a parallel plane to cut latencies, and a single ultra-high-pressure water injection nozzle and a concrete surface I
Or close the outside of the ultra high pressure water injection nozzle
Providing a closed space, rotating the ultra high pressure water injection nozzle in the closed space
While condensing ultra high pressure water from the ultra high pressure water injection nozzle
Sprayed onto the concrete surface, and laid on the concrete surface
Sharpened away , and at the same time, caused by ultra-high pressure water sprayed on the concrete surface
Transfer the polluted water and the shaved latence to the super
Concrete outside the high pressure water injection nozzle and in the closed space
Near the concrete surface, the ultra-high pressure water
Vacuum while utilizing the momentum of polluted water that is injected and rebounds
A green cutting operation method characterized in that it is sucked and collected by an action .