JP2576879Y2 - Green cut working unit housing structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure of a green cutting work unit.

[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]

[Problem to be Solved by the Invention] In that case, it is conceivable that the work of scraping the latence, the work of collecting the shaved latence, and the work of collecting the polluted water are performed separately. However, the work efficiency could not be improved, and if the work of scraping the latence and the work of collecting the latencies were performed separately, when collecting the latencies, it was necessary to inject high-pressure water again, and a large amount of water was generated. To waste. Therefore, the present applicant has proposed a green cutting work method in which the work of scraping the latence and the work of collecting the scraped latence and the contaminated water can be simultaneously and effectively performed by a single work vehicle. The present invention relates to a structure for realizing this green cutting work method, and relates to a prior application (Japanese Patent Application No. 253892/1990).
The purpose of the present invention is, of course, to be able to simultaneously and effectively perform the work of scraping the latence and the work of collecting the scraped latence and polluted water with a single work vehicle. Particularly, when the concrete surface is soft, a housing structure of a green-cut work unit that can collect a relatively large latence that has been cut off without hindering splashing of contaminated water by spraying ultra-high pressure water onto the concrete surface is provided. Is to do.

[0004]

In order to achieve the above object, the present invention provides a green cutting operation unit for injecting ultra-high pressure water onto a concrete surface to scrape latence, and to suck and collect the scraped latence together with polluted water. Wherein the housing comprises a housing body, and a contact member attached to the periphery of the housing body and having excellent wear resistance to be in contact with a concrete surface. The opposite surface of the housing body has an opening through which ultra-high pressure water passes through the concrete surface, and a suction port having a size corresponding to the latence shaved for collecting the polluted water and the latence. During operation, it moves on the concrete surface and is located in the movement direction around the housing body. The contact member portion is constituted by super abrasion rubber, the contact member portion positioned in a direction perpendicular to the moving direction is characterized by being composed by a brush.

The present invention is characterized in that the opening is formed at the center of the upper surface of the housing body, and the suction ports are formed at both ends of the upper surface of the housing body in the moving direction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 apparatus. The green cut device 1 is composed of three parts: an ultra-high pressure water supply unit 3, a green cut work vehicle 5, and a mud collecting storage unit 7. The ultrahigh-pressure water supply unit 3 includes an engine 9, a water supply pump 11, an ultrahigh-pressure water pump 13, a filtering device 15, a water supply tank 17, and the like. Water supply pump 11 and ultra high pressure water pump 13
Is driven by the engine 9, the construction water is supplied by the water supply pump 11 to the water supply tank 17 through the filtration device 15, and the water in the water supply tank 17 is supplied by the ultra-high pressure water pump 13.
Through the ultra high pressure water hose 19. The ultrahigh-pressure water supply unit 3 having such a configuration is mounted on the vehicle 20 together with the mud collection unit 7 as shown in FIG.

The green-cut work vehicle 5 includes an automatic guided vehicle 21 and a work unit 23 as shown in a side view in FIG. 3 and a plan view in FIG. The automatic guided vehicle 21 includes a first wheel group 25 including two front wheels and two rear wheels, and a second wheel group 27 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 27. The vehicle body 21A of the automatic guided vehicle 21 is provided with a hydraulic oil tank 29, a fuel tank 31, an engine, a control panel 33, an engine operation box 35, and an muffler 37 for an engine. Winding and unwinding mechanism 3 for hose 19
9 is provided, and a take-up and unwinding mechanism 43 for the vacuum hose 41 is provided above the vehicle body 21A.

The take-up and unwinding mechanisms 39, 43 of the ultra high pressure water hose 19 and the vacuum hose 41 are connected to the vehicle body 21.
Hose 19,41
To wind or unwind the drums 39A,
43A is appropriately rotated and driven, and the ultrahigh-pressure water hose 19 is connected to the ultrahigh-pressure water hose 45 connected to the working unit 23 at the center of the drum 39A, as shown in FIG. , Working unit 23
The vacuum hose 47 connected to the side is connected at the center of the drum 43A.

The working unit 23 is disposed at the front of the automatic guided vehicle 21. That is, a horizontal moving mechanism 51 is provided at a front portion of the automatic guided vehicle 21, and a vertical moving mechanism 53 is provided in the horizontal moving mechanism 51, and a working unit is connected to the vertical moving mechanism 53 via a joint 55. 23 are provided. The lateral movement mechanism 51 includes a guide 57 extending in the lateral direction of the vehicle body 21A and capable of adjusting the tilt about a shaft 57A, and a hydraulic cylinder 59 extending in the lateral direction of the vehicle body 21A. Thus, the vertical moving mechanism 53 is reciprocated along the guide 57.

The vertical moving mechanism 53 includes a frame 61 which is reciprocated in the horizontal direction by the horizontal moving mechanism 51;
It comprises a screw member 65 that rotates by operating the handle 63, a bracket 67 that engages with the frame 61 and can move up and down by rotation of the screw member 65. As shown in FIG. 5, the lower end of the screw member 65 is disposed so as to pass through the engaging plate 67A inside the bracket 67, and the plate member 65A provided at the lower end of the screw member 65 is separated below the engaging plate 67A. So that the working unit 23 is
A is arranged so as to be movable up and down with respect to A, and when the working unit 23 rides on an obstacle or the like, the working unit 23 moves upward together with the bracket 67, the screw member 65, and the handle 63. You can escape.

The joint 55 includes a bracket 2301 on the working unit 23 side and pins 5501 and 5503 supported by the bracket 67 and the pins 5501 and 5501, respectively.
Blocks 5505 and 5507 supported by 5503, respectively
The blocks 5505 and 5507 are rotatably connected to each other, and the work unit 23 can be pivoted back and forth (pitchable) with respect to the automatic guided vehicle 21 by the joint 55 and the vehicle. Are swingably connected to each other (can be rolled). Accordingly, the posture of the working unit 23 with respect to the concrete surface C is maintained constant irrespective of a change in the movement of the automatic guided vehicle 21, so that a uniform green cutting operation can be performed. In FIG. 5, 5510 regulates the pitching angle and the rolling angle of the working unit 23 with respect to the bracket 67 within a predetermined range. For example, when the green cutting work vehicle 5 is lifted, the working unit 23
This is to prevent wobbling and the like.

The working unit 23 includes, as shown in FIG.
Dolly 2303 and injection nozzle 230 for injecting ultra-high pressure water
5, a case 2307 of the injection nozzle 2305, a housing 2309 surrounding the vicinity of the concrete surface where the ultra-high pressure water is injected from the injection nozzle 2305,
A bellows 2311 vertically extending from the lower part of the housing 307 and connected to the housing 2309 is provided. The carriage 2303 has four caster wheels 2303A, and the bracket 2301 is supported by the carriage 2303. The bracket 2301 is mounted on the carriage 2303.
Is connected to a cylinder bracket 2313 extending upward. A height adjusting hydraulic cylinder 2315 is suspended from the upper end of the cylinder bracket 2313, and a vertical movement guide 2317 is attached to a lower portion of the cylinder bracket 2313. The case 2307 is connected to the vertical movement guide 2317 via an engaging portion, and the end of the rod of the hydraulic cylinder for height adjustment 2315 is connected to the case 2307. 2307 is configured to move up and down along a vertical movement guide 2317 so that the height of the injection nozzle 2305 can be adjusted according to the hardness of the concrete surface.

[0013] As shown in FIG.
A hydraulic motor 2321 and a refueling hydraulic pump 2323 are provided. Further, a gear train 2325 that rotates by the power of the hydraulic motor 2321 and a rotating member 2329 having a gear 2327 meshing with the gear train 2325 are mounted on a bearing 2331.
It is provided rotatably via the. The shaft member 2333 is located at a position deviated from the rotation center of the rotation member 2329.
Is inserted. The lower end of the shaft member 2333 is
305 is fixed.

As shown in the side view of FIG. 7 and the front view of FIG.
A large number of ejection holes 2337 formed by 335 are provided, a passage 2339 is communicated with each ejection hole 2337, and a hose 2341 inserted into the shaft member 2333 is connected to the passage 2339. The ultra high pressure water hose 45
As shown in FIG. 6, joint 2343, hose 2
345, the hose 234 through the joint 2347
The ultra high pressure water from the ultra high pressure water pump 13 is supplied to the passage 2339 of the injection nozzle 2305, and is jetted from each jet hole 2337. Then, due to the eccentric rotation of the injection nozzle 2305 about the position deviated from the rotation center, the trajectory of the high-pressure water ejected from the large number of ejection holes 2337 becomes a surface of a predetermined width.

As shown in FIG. 9, a bellows 2311 which can be extended and contracted up and down is provided from the lower surface of the case 2307 so as to cover the periphery of the injection nozzle 2305. The lower end of the bellows 2311 is connected to the housing 2309. . The housing 2309 includes a housing main body 2351 and a super-wear rubber plate 2353. FIG. 10 shows the housing body 235.
1 is a plan view, FIG. 11 is a front view, FIG. 12 is a side view thereof, and FIG. 13 is a sectional view of a suction port portion. The housing main body 2351 includes a rectangular upper surface 2357 in which an opening 2355 for injecting ultra-high-pressure water from the injection nozzle 2305 onto the concrete surface C is formed, and four side surfaces 2359 suspended from the upper surface 2357. The opening 23
The bellows 2311 is located on the upper surface 2357 around the 55.
A mounting hole 2361 is formed, and a suction port 2363 is provided at each of left and right ends of the vehicle body 21A on the upper surface 2357 located outside the bellows 2311.

The suction port 2363 has an opening 2363 at the lower end thereof.
A is formed longitudinally in front of and behind the vehicle body 21A, is formed narrower toward the upper part, the upper part 2363B is formed in an annular shape, and the vacuum hose 47 is attached to the annular upper part 2363B.
Is connected. The size of each part of the suction port 2363 is formed so as to correspond to a relatively large latence that is cut off when the concrete surface is soft. Further, a mounting piece 2365 is provided upright at a portion near the four corners of the upper surface 2357, and the mounting piece 2365 is attached to a mounting piece (not shown) protruding from the frame of the bogie 2303, whereby the housing body 2351 is formed. Are supported by a carriage 2303. Further, a plurality of screws 2367 for attaching a super-abrasion-resistant rubber plate are provided upright at a lower portion of each side surface 2359.

The ultra-wear-resistant rubber plate 2353 is formed by the screws 2
367 each side 2359 of the housing body 2351
When the lower end of the super wear-resistant rubber plate 2353 contacts the concrete surface C, a closed space 2369 is formed between the bellows 2311 and the housing 2309 around the injection nozzle 2305 and the concrete surface C. It is configured as follows. In this embodiment, the height from the concrete surface C to the opening 2363A at the lower end of the suction port 2363 is 55 mm, and the lower end opening 236 of the suction port 2363 is provided.
The width of 3A and the inner diameter of the annular upper part 2363B are 50 mm.

As shown in FIGS. 3 and 4, the lateral moving mechanism 51, the vertical moving mechanism 53, and the working unit 23 are frame-shaped touch sensor mounts with casters attached to the front of the vehicle body 21A. It is arranged in 29A-1.

As shown in FIG. 1 and FIG. 2, the mud collecting accommodating section 7 sucks the latence scraped off by the ultra-high pressure water into the suction port 236.
3, a vacuum pump 71 for sucking through the vacuum hoses 47 and 41 together with the contaminated water, an engine 73 for driving the vacuum pump 71, and a mud collecting chamber for storing the latencies collected through the vacuum hoses 47 and 41. A tank 75 is provided. Among the latencies and polluted water collected in the mud collecting container 7, the dust in the mud collecting tank 75 is collected and discharged to an appropriate place, and the moisture is sent out to another place as treated water. As shown in FIG. 2, the engine 71, the engine 73, and the mud collecting tank 75 are mounted on the vehicle 20 together with the ultrahigh-pressure water supply unit 3.

Next, the green cutting operation will be described. In this embodiment, for example, a case will be described in which the concrete surface is relatively soft such that a green cut operation is performed on the day after the concrete is cast by the RCD method or the like. First, the dimension between the injection nozzle 2305 and the concrete surface C is set to be large corresponding to the soft concrete surface C, and the working unit 23 is reciprocated in the lateral direction by the lateral moving mechanism 51 as the automatic guided vehicle 21 travels. And perform green cutting work. Then, the injection nozzle 23 is located inside the closed space 2369.
From 05, the ultra-high pressure water is sprayed onto the concrete surface C through the opening 2355, and the latence is scraped off.

In this case, since the concrete surface C is soft, the latency to be scraped off is relatively large, but the opening 2363A at the lower end of the suction port 2363 is separated from the concrete surface C, and is formed in a size corresponding to the latence to be shaved. Therefore, the super-high pressure water is sprayed on the concrete surface C and rebounds, and the suction water 2363
The vacuum action acting on the water does not block the suction port 2363, and does not scatter the latencies and the contaminated water to the outside. It is efficiently collected from the suction port 2363 along the rubber plate 2353 and the side surface 2359 of the housing 2351.

Although the embodiment has been described with respect to the case where the ultra-wear-resistant rubber plate 2353 is used as the contact member, the contact member is not limited to this, and may be any member that can maintain the airtightness of the closed space 2369 to some extent. Good. In the embodiment, the super-wear-resistant rubber plate 2353 is attached to the lower part of each of the four side surfaces 2359 of the housing main body 2351. However, the super-wear-resistant rubber plate 2353 is attached to the two side surfaces 2359 located in the front-rear direction of the vehicle body. Instead of each, a brush may be attached. In this case, a brush made of a steel or synthetic resin wire rod densely implanted in a frame or the like is used as the brush in this case.
One that can maintain the airtightness of 69 to some extent is used.
By using a brush, an invasion path of the air in the closed space 2369 is ensured, and the adhesion of the super wear-resistant rubber plate 2353 to the concrete surface C can be weakly adjusted. Further, while preventing the scraped latency and polluted water from being scattered, the scraped latency is swept into the closed space 2369 as the vehicle body 21A advances, particularly by a brush disposed on the rear side of the vehicle body 21A. In addition, it becomes possible to make the recovery of the polluted water smooth.

[0023]

[Effects of the Invention] As is apparent from the above description, according to the present invention, it is obvious that the work of recovering shaved latencies and contaminated water can be simultaneously and effectively performed by a single work vehicle. , If the concrete surface is soft,
It is possible to collect the shaved relatively large latence without hindering the scattering of the polluted water that is splashed by the ultra-high pressure water being sprayed on the concrete surface.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a green cut device.

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

FIG. 3 is a side view of a green cut work vehicle.

FIG. 4 is a plan view of a green cut work vehicle.

FIG. 5 is a side view of a connection portion between the vehicle body and the work unit.

FIG. 6 is a sectional view showing the inside of the case of the injection nozzle.

FIG. 7 is a side view of the injection nozzle.

FIG. 8 is a plan view of an injection nozzle.

FIG. 9 is a sectional view of an injection nozzle and a housing part.

FIG. 10 is a plan view of a housing body.

FIG. 11 is a front view of a housing body.

FIG. 12 is a side view of the housing body.

FIG. 13 is a sectional view of a suction port portion of the housing body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Green cut device 3 Ultra high pressure water supply part 5 Green cut work vehicle 7 Mud collecting part 19,45 Ultra high pressure water hose 23 Work unit 41,47 Vacuum hose 2305 Injection nozzle 2309 Housing 2351 Housing main body 2353 Super wear resistant rubber plate 2363 Cart

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

Claims (2)

(57) [Scope of request for utility model registration] 1. A housing structure of a green-cut operation unit for injecting ultra-high pressure water onto a concrete surface to scrape latencies and sucking and collecting the scraped latencies together with polluted water, wherein the housing comprises a housing body and A contact member attached to the periphery of the housing body and having excellent abrasion resistance to come into contact with the concrete surface. An opening to pass through the surface and a suction port of the size corresponding to the latence shaved for collecting polluted water and latence are formed.
The green cut operation unit is connected during operation.
Move over the cleat surface and move forward around the housing body
The contact member located in the moving direction is a super wear-resistant
And is located in a direction orthogonal to the moving direction.
The housing structure of the green cutting work unit , wherein the contact member of the portion is constituted by a brush . 2. A pre-Symbol opening is formed in the center of the upper surface of the housing body, wherein the suction port, the husband across the upper surface of the housing body in the moving direction s formed by being claim 1, wherein the green cutting task unit Housing structure.