JPH04120369A - Suction device of green cut machine etc. - Google Patents

Abstract

PURPOSE:To quicken suction of contaminated water to be cleaned, by connecting a suction blower for the contaminated water to a suction mouth through air/ water separator tanks, installing an injection nozzle in the suction mouth, and generating waves in the contaminated water. CONSTITUTION:A suction mouth 35 to suck contaminated water to be cleaned is grounded via a drawing member 38 at a position behind a partition plate 36 of a grounding cover 19. This suction mouth 35 is coupled with two air/water separator tanks via bellows 44, fixing pipe 45, and flexible pipe 46, and further led to a suction blower. The suction mouth 35 is fitted with an injection nozzle 50 and air is blown via an air supply device, and thereby waves are generated on the contaminated water, which should enhance the sucking performance for contaminated water. This quickens suction of contaminated water including laitance and also can suppress the amount of water consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a suction device installed in a green cutting machine or the like that removes laitance generated on the upper surface of poured concrete and cleans the upper surface of the concrete.

[Conventional technology]

After pouring concrete, internal fine particles float to the surface together with suspended water during bleaching, forming a layer of inhard material called laitance on the concrete surface.

This laitance is used to construct dams by transporting cemented carbide or poorly mixed concrete using a cable crane or tamp truck, spreading it to a predetermined thickness, and then compacting it with vibrating rollers.
r Compacted Dam Concrete
e) Even when implementing the construction method, laitance must be removed without exception, as if it is left as it is, it will interfere with the next concrete pouring. Laitance removal work is usually called green power and consists of grinding the laitance and cleaning the concrete surface by pouring water on it after grinding.

By the way, as a cleaning device for performing the above-mentioned cleaning work, a normal construction vehicle with front wheels and rear wheels attached to the frame is used.
A high-pressure water injection device and a suction mouse with a comb plate on the front side of the injection device and a plan on the rear side are attached via a link mechanism, and the water sprayed from the injection device and used for cleaning is A cleaning vehicle has been proposed that uses a suction blower to clean the surface of concrete by suctioning laitance, sand, etc. from a suction mouth.
-47057).

[Invention or problem to be solved]

However, the suction device of the cleaning vehicle mentioned above simply sucks the waste water from the concrete pouring surface through the suction mouth.
This method has the problem of not being able to suck up wastewater efficiently, requiring a large amount of cleaning water and a large suction blower, and being time consuming.

The present invention provides a green cut machine, etc., which can efficiently and quickly suction dirty water from a suction mouth, and can therefore efficiently clean a concrete pouring surface with a relatively small amount of water and a small suction blower. The purpose is to provide a suction device.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a suction mouth for sucking dirty water from a cleaning surface through a suction port, which is attached to a traveling vehicle with the suction port facing the cleaning surface, A suction blower that sucks the sewage from the cleaning surface is connected via an air-water separation tank, and an air supply device includes an injection nozzle that injects air into the sewage from the cleaning surface in the suction mouth to form the sewage. The structure was established in connection with the following.

[Function] - To remove the cleaning wastewater generated on the concrete placement surface due to laitance grinding, operate the suction blower and
Activate the air supply device to forcefully inject air from the injection nozzle. When the suction blower operates, the inside of the suction mouth becomes negative pressure, and the cleaning waste water containing laitance, sand, etc. is sucked into the suction mouth from the suction port, or at this time, the air jetted from the injection nozzle is applied to the cleaning surface inside the suction mouth. It collides with the sewage with force to form sewage, which causes laitance, sand, etc. to float from the cleaning surface, and causes water droplets to form and scatter into the air. Therefore, the waste water is efficiently sucked into the suction mouth and removed from the concrete surface.

〔Example〕

The attached drawings show an embodiment in which the suction device according to the present invention is applied to a green cutting machine, and reference numeral 1 in the drawings indicates a running vehicle. This running vehicle 1 consists of a front vehicle 3 having wheels 2 and a rear vehicle 5 having drive wheels 4. The front vehicle 3 and the rear vehicle 5 are connected to each other by a connecting pin 6, and by the expansion and contraction of two left and right steering hydraulic pressure cylinders 7 (only the front hydraulic cylinder 7 is shown in Fig. 1). Connecting pin 6
The configuration is such that the mutual connection angle around the center can be changed, and the running direction can be changed.

The front vehicle 3 is provided with a driver's seat 8, has an engine 9 mounted thereon, and has movable shafts 11, 12 pivotally supported by bearings 13 attached to the front part, and a connecting member that interconnects the movable shafts 1112. The left and right hydraulic cylinders 15 provided between the left and right hydraulic cylinders 14 and the front vehicle 3 are expanded and contracted to move in the width direction of the front vehicle 3 (vertical direction in FIG. 3). Parallel links 16.17 constituting the parallel link mechanism 10 are attached to the movable shaft 11.12 so as to be rotatable up and down, and a frame member 18 is attached to the free end of these parallel links +6.1.7. or installed.

A cover 19 is attached to the frame member 18, and a grinding brush 21 or a rotating shaft 22 is rotatably supported in the circumferential direction by a bearing 23 of the frame member 18. . The grinding swing 21 is rotated in the circumferential direction to grind the laitance generated on the upper surface of the concrete C, and is driven by a hydraulic motor (
It is connected to a grinding drive device (grinding drive device) 24 via a transmission mechanism 25 (FIG. 4) using a chain or the like. A vertical hydraulic cylinder (vertical drive device) 26 is provided between the tip of the parallel link 16 and the root end of the other parallel link 17 to vertically rotate the parallel links 16 and 17. .

Further, on the rear surface of the cover 19, an accumulation/glue 31 is provided supported by a bracket 40, and the accumulation/glue 31 is
It is connected to a water pump 33 (FIG. 8) mounted on the rear vehicle 5 via a header pipe 34 (FIG. 6), a branch hose 20, and the like. The bracket 40 is attached to a cart 29 which is movable up and down by inserting a rod 27 into a through hole of a guide member 28. The guide member 28 is attached to the cover 19, and a rod 27 is attached to the upper end of the rod 27.
A stopper 30 is provided to prevent the handle from falling off.

Reference numeral 35 in FIG. 5 and the like is a suction mouse.

This suction mouth 35 is for sucking cleaning waste water generated by the operation of the grinding bra/21, and the protrusion 3 of the pulling member 38 is inserted into the elongated hole 37 of the partition plate 36 provided in the cover 19.
At the same time, three wheels 42 and 43 (wheels 43 are attached to the suction mouse 3
5 (or only one is shown in the figure) is grounded and disposed in the rear part of the cover 19. A spray nozzle 50 is attached to the suction mouth 35. The injection nozzle 50 blows air onto the washing fP wastewater in the suction mouth 35 to create washing wastewater and improves suction of the wastewater. A compressor or the like is operated by an air injection hydraulic motor 79 (FIG. 8). is connected to an air supply device 80. The suction mouth 35 includes a heros 44, a fixed tube 45, and a flexible tube 46.
The first steam/water separation tank 47 (FIG. 1) and the second steam/water separation tank 48 are connected via the
8 is connected to a suction blower 49 (FIG. 8).

The fixed tube 45 is supported by a plurality of support members 51 on the cover 19, and the upper part of the heros 44 is inserted into the center of the support members 51.

Therefore, like the collecting nozzle 31, the suction mouth 35 moves up and down according to the unevenness of the road surface. A run 52 made of a chain for preventing the scattering of laitance is suspended from the lower part of the partition plate 36, and a shielding sheet 53 made of a flexible material such as a comb is placed around the mouth edge of the suction mouth 35. is attached to form a suction port 35a. The steam/water separation tanks 47 and 48 and the suction blower 49 are mounted on the rear vehicle 5.

At the bottom of the first steam/water separation tank 47, there is an ejector 55 that circulates a scraper plate (not shown) by operating a discharge hydraulic motor 54 (FIG. 1) and discharges the slime etc. that have settled in that area. , a lid 57 that is opened and closed by an opening/closing hydraulic cylinder 56 is provided. The rear vehicle 5 also includes a water reel 58 and a drainage reel 59 (water reel 58
(overlapping the drainage reel 59 in FIG. 1) is mounted, and the water reel 58 has a water supply hose (not shown) that sends water to a water tank (not shown) connected to the water pump 33. At the same time, the drainage reel 59
There is a drain hose (not shown) or the first air/water separation tank 47.
The pipe is connected to a drainage pump 61 (Fig. 1) that drains overflowing waste water.

Next, the power system will be explained with reference to FIG. 8. The engine 9 mounted on the front vehicle 3 is connected to a gear box 62 mounted on the rear vehicle 5 by a transmission shaft 64 provided with a universal joint 63. have been contacted.

Hydraulic pumps 65, 66, 67, 68, and 69 are connected to each rotating shaft of the gear box 62, and the hydraulic pump 65 is connected to a hydraulic motor (
The hydraulic pump 66 has a hydraulic motor (water supply drive device) 72 that operates the water supply pump 33.
, a hydraulic motor (drain drive device) 73 that operates the drain pump 61, and a hydraulic motor (reel drive device) 74 that rotates the water reel 58 on the hydraulic bong floor. Operates the hydraulic motor (reel drive device) 75 that rotates the drainage reel 59, the steering hydraulic cylinder tough 7, the left and right hydraulic cylinders 15, the opening/closing hydraulic cylinder 56, the drainage hydraulic motor 54, and the air supply device 80. Hydraulic motors 79 for air injection are connected to each other.

Further, the other hydraulic pump 68 is connected to a hydraulic motor (traveling drive device) 77 that rotates the driving wheels 4 via a propulsion shaft 76, and the hydraulic pump 69 is connected to the hydraulic motor 24, respectively. In addition, the above hydraulic pumps 65 to 69
and hydraulic motors 71 to 75, etc., are mounted on the rear vehicle 5.

Reference numeral 78 in FIG. 1 is a caster attached to the cover 19 with bolts or the like, and can be adjusted up and down by a handle 70.

Next, the operation of the suction device of the present invention will be explained together with the operation of the green cutting machine.

The free end of the water supply hose wound around the water supply reel 58 is connected to a required water source, and the free end of the drainage hose wound around the drainage reel 59 is prepared at the planned location for drainage, and the engine 9 is started. to operate the hydraulic pumps 65 to 69, and the hydraulic motors 24.71, 72, 73, 77.7
Since the grinding brush 21, the suction blower 49, the water pump 33, the drain pump 61, and the air supply device 80 are not operated at the rotation of 9, the vehicle 1 is moved forward at a very slow speed using the driving wheels 4. At this time, the vertical hydraulic cylinder 26 is reduced to lower the casters 78 and the grinding brush 21 to the upper surface of the concrete C, and the hydraulic motor 7475 is operated to rotate the water reel 58 and the drainage reel 59. Running car 1
In synchronization with the forward movement of the water supply reel 58 and drainage reel 59
Pay out the water supply hose and drainage hose.

In the above, the grinding brush 21 rotates in the circumferential direction to grind the laitance, and the collecting nozzle 31 sprays water to collect cleaning waste water in front of the suction mouth 35. In addition, the injection nozzle 50 blows the air that is force-fed by the operation of the air supply device 80 onto the clean and dirty water in the suction mouth 35 to create dirty water, float laitance, sand, etc. from the cleaning surface, and generate water droplets. Let me do it. Then, the suction float 49 collects the washed wastewater, which is established by the air injected from the injection nozzle 50 and is made into water droplets, to the second air-water separation tank 48, the first air-water separation tank 47, and the flexible pipe. 46 or the like from the suction mouth 35.

At this time, the suction mouse 35 is pulled by the traction member 38 and moves up and down according to the unevenness of the concrete C. At this time, the collecting nozzle 31 moves up and down together with the trolley 29 on the uneven concrete surface, and accurately sprays water at a predetermined position to bring the cleaning wastewater to the front of the suction mouth 35, which is a pulling member. Concrete C being towed by 38
It travels up and down according to the unevenness of the surface and sucks up cleaning waste water. The shielding notebook 53 attached to the suction mouth 35 suppresses the suction of air from the suction mouth 35 and improves the suction of cleaning waste water from the suction mouth 35. Further, the runes 52 provided on the partition plate 36 prevent cleaning wastewater from scattering in the air toward the suction mouth 35 side.

The bellows 4 is moved from the suction mouth 35 by the operation of the suction blower 49.
4, fixed pipe 45, and flexible pipe 46 into the first air-water separation tank 47.
The air is separated in the steam/water separation tank 47, and the slime such as laitance is precipitated at the bottom of the first steam/water separation tank 47 to overflow the first steam/water separation tank 47.
The water is drained through the drainage hose by the action of the drainage pump 61. Further, the air separated from the cleaning wastewater in the first steam/water separation tank 47 has its moisture removed in the second steam/water separation tank 48 and is discharged to the atmosphere through the suction blower 49.

In this way, slime is deposited at the bottom of the first steam/water separation tank 47! When the slime is accumulated, the running vehicle is stopped to interrupt the grinding work, the opening/closing hydraulic cylinder 56 opens the FF157, and the discharge hydraulic motor 54 operates the ejector 55 to discharge the slime to the outside.

In addition, when the traveling vehicle 1 travels along a curve of the concrete 9 C, the steering hydraulic cylinder 7 on the center side of the curve is used.
is contracted, and the steering hydraulic cylinder 7 on the outside of the curve is extended. As a result, the front vehicle 3 rotates about the connecting pin 6 with respect to the rear vehicle 5, so that the traveling vehicle 1 changes direction and moves around the corner.

In this case, the grinding brush 21 attached to the front vehicle 3 is correctly oriented in the direction of travel without disrupting its relationship with the front wheels 2, so the front wheels rotate left and right with respect to the frame and the direction changes. Unlike those that change the grinding speed, laitance grinding will always be done properly. When grinding the laitance at the side edges of concrete C, by moving the movable shafts 11 and 12 laterally by expanding and contracting the left and right hydraulic cylinders 15, the grinding bra/21 is brought closer to the side edges of concrete C. Perform grinding work. In addition, when adjusting the grinding depth by the concrete grinding swing 21, the caster 7
Adjust by raising or lowering 8.

When the traveling vehicle 1 is run without performing the green cuff, the cover 19, the grinding brush 21, the suction mouth 35, etc. are removed by extending the vertical hydraulic cylinder 26 and rotating the parallel link mechanism 10 upward. The traveling vehicle 1 is caused to travel while floating from the traveling surface. Needless to say, if it is necessary to wind up the water supply hose and the drainage hose on the reel 58, 59 when the vehicle 1 moves backward or forward, the reel 58, 59 is rotated in the opposite direction.

Technical matters other than the above or other embodiments will be described below.

(1) The wastewater discharged from the air-water separation tank 47 can be returned to the water pump for reuse.

(2) The air discharged from the suction blower 49 can also be injected from the injection nozzle 5o. In this case, the air injection hydraulic motor 79 and the air supply device 80 can be omitted.

(3) The first steam/water separation tank 47 is provided with a detection switch for detecting that a predetermined amount of slime has been reached.

(4) The suction device of the present invention is not limited to clean cut machines.
It goes without saying that it can be installed in other devices, such as the washing vehicle.

〔Effect of the invention〕

As explained above, the suction device of the present invention, such as the green power machine, is attached to a traveling vehicle with the suction mouth facing the cleaning surface, and the suction device is attached to a traveling vehicle with the suction mouth facing the cleaning surface, and the suction device sucks the dirty water from the cleaning surface from the suction port. A suction blower that suctions waste water from the cleaning surface through a suction mouse is connected to the mouse via an air-water separation tank, and the suction blower injects air into the waste water on the cleaning surface in the suction mouse to remove the waste water. Since the spray nozzle is connected to the air supply device, cleaning waste water containing laitance can be efficiently and quickly removed from the sucking mouth. Therefore, the amount of water used can be kept low, and there is an advantage that a small suction blower can be used instead of a large suction blower.

[Brief explanation of the drawing]

The attached drawings show an embodiment of a suction device such as a green cutting machine according to the present invention, and FIG. 1 is a partially cutaway side view of a green cutting machine equipped with this suction device, and FIG. 2 is a side view of the cover. 3 is a side view showing the structure, FIG. 4 is a sectional view showing the structure of the attachment of the grinding brush to the frame member, and FIG. 5 is a sectional view of the structure of the attachment of the suction device according to the present invention. 6 is a plan view showing the relationship between the suction mouth and the integrated nozzle, FIG. 7 is a side view of the same, and FIG. 8 is a block diagram of the power system. 1... Traveling vehicle 35a... Suction port 49... Suction blower 80... Air supply device

Claims (1)

[Claims] A suction mouth that sucks the dirty water from the cleaning surface through a suction port is attached to the vehicle with the suction port facing the cleaning surface, and a suction blower that sucks the dirty water from the cleaning surface through the suction mouth is attached to the suction mouth to separate air and water. Connected through a tank and
A suction device such as a green cutting machine, characterized in that the suction mouse is provided with an injection nozzle that is connected to an air supply device and that sprays air into the dirty water on the cleaning surface in the suction mouth to make the dirty water ripple.