JPH076290B2 - Suction device such as green cutting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a suction device installed in a green-cutting machine or the like that removes leitance generated on the upper surface of cast concrete and cleans the upper surface of the concrete.

[Prior Art] After concrete is poured, it floats along with fine particles or floating water inside with breathing to form a layer of non-hard material called Laitance on the concrete surface.

This latance is an RCD (Roller Compacted Da) that builds a dam by kneading it with a cement such as a cable crane or a dump truck, transporting poorly mixed concrete, laying it to a specified thickness, and then compacting it with a vibrating roller.
It occurs without exception when carrying out the construction method, but if the latance is left as it is, it will interfere with the next concrete driving, so it must be removed. The work of removing the leitance is usually called green cutting, and the process of grinding the leitance is
The cleaning work consists of washing the concrete pouring surface by pouring water on the concrete pouring surface after the grinding work.

By the way, as a cleaning device for performing the above cleaning work, in a normal construction vehicle with front and rear wheels attached to a frame,
A high-pressure water jetting device, a rubber plate on the front side of the jetting device side, and a suction mouse having a brush arranged on the back side are attached via a link mechanism, and the water jetted from the jetting device and worked for cleaning is attached, A washing vehicle has been proposed in which a suction blower is actuated to suck the concrete placing surface by sucking it together with the latance and sand from the sucking mouse.
-47057).

[Problems to be Solved by the Invention]

However, since the suction device of the above washing car simply sucks the dirty water on the concrete placing surface from the suction mouse,
There is a problem that it cannot suck the dirty water efficiently, requires a large amount of washing water and a large suction blower, and takes time.

INDUSTRIAL APPLICABILITY The present invention is capable of efficiently and swiftly sucking sewage from a suction mouse, and therefore can efficiently wash a concrete placing surface with relatively small amount of water and a small suction blower. The purpose is to provide a device.

[Means for Solving the Problems]

In order to achieve the above object, the present invention, a suction mouse for sucking the dirty water of the cleaning surface from the suction port, attached to the traveling vehicle with the suction port facing the cleaning surface, through the suction mouse to the suction mouse A suction blower that sucks dirty water on the cleaning surface is connected via a water-water separation tank, and air is supplied to the suction mouse by injecting air to the dirty water on the cleaning surface in the suction mouse to make the dirty water ripple. The configuration is such that it is provided in contact with the device.

[Action]

In order to remove the cleaning wastewater generated on the concrete placing surface by grinding the leitance, activate the suction blower, and
The air supply device is activated to forcefully eject air from the ejection nozzle. Due to the operation of the suction blower, the inside of the suction mouse becomes a negative pressure, and the cleaning wastewater containing laitance, sand, etc. is sucked into the suction mouse through the suction port. The sewage collides violently with the sewage, causing the sewage to rise up and to let the leitance, sand, etc. float from the washing surface, and also to cause water droplets to be scattered in the air. Therefore, the sewage is efficiently sucked into the suction mouse and removed from the surface of the concrete.

〔Example〕

The accompanying drawings show an embodiment in which the suction device according to the present invention is applied to a green cut machine, and reference numeral 1 in the drawing is a traveling vehicle. This traveling vehicle 1 comprises 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 the connecting pin is extended by expanding and contracting two right and left steering hydraulic cylinders 7 (only the front hydraulic cylinder 7 is shown in FIG. 1). 6
The angle of connection with each other around the center is changed, and the traveling direction is changed.

The front vehicle 3 is provided with a driver's seat 8, an engine 9 is mounted, and movable shafts 11 and 12 are attached to the front part by being axially supported by bearings 13 to interconnect the movable shafts 11 and 12. The left and right hydraulic cylinders 15 provided between the connecting member 14 and the front vehicle 3 are expanded and contracted to move the front vehicle 3 in the width direction (vertical direction in FIG. 3). The movable shafts 11 and 12 are attached with parallel links 16 and 17 constituting the parallel link mechanism 10 so as to be vertically rotatable, and a frame member 18 is attached to the free ends of the parallel links 16 and 17. Has been.

A cover 19 is attached to the frame member 18, and the cover 19
A grinding brush 21 is housed in the inside of the bearing so as to be rotatable in the circumferential direction with a rotating shaft 22 supported by a bearing 23 of the frame member 18. The grinding brush 21 is rotated in the circumferential direction, and the concrete C
To grind the leitance generated on the upper surface of
Hydraulic motor (grinding drive device) 24 supported by the frame member 18
Are connected to each other via a transmission mechanism 25 (Fig. 4) using a chain or the like. Between the tip of the parallel link 16 and the root of the other parallel link 17, a vertical hydraulic cylinder (vertical drive device) 26 for vertically rotating the parallel links 16 and 17 is provided. .

Further, on the rear surface of the cover 19, the integrated nozzle 31 is mounted on the bracket.
The integrated nozzle 31 is provided so as to be supported by the rear vehicle 5
The water supply pump 33 (FIG. 8) mounted on the vehicle is communicated with the water via a header pipe 34 (FIG. 6), a branch hose 20, and the like. The bracket 40 is attached to a carriage 29 which is vertically movable 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 also the rod
A stopper 30 is provided at the upper end of 27 to prevent the rod 27 from falling off.

Reference numeral 35 in FIG. 5 and the like is a suction mouse. The suction mouse 35 is for sucking cleaning wastewater generated by the operation of the grinding brush 21, and is a partition plate provided in the cover 19.
While inserting the protrusion 39 of the pulling member 38 into the long hole 37 of 36,
Three wheels 42, 43 are hung on a cover 19 with a hanging string 41 such as a chain (two wheels 43 are provided on the left and right of the suction mouse 35,
(Only one of which is shown in the drawing) is disposed in the rear portion of the cover 19 by grounding. Suction mouse 35 has a jet nozzle
50 is installed. Injection nozzle 50 is a suction mouse 35
Blow the cleaning wastewater inside by blowing air on it.
It is intended to improve the intake of dirty water, and is connected to an air supply device 80 such as a compressor which is driven by a hydraulic motor 79 for air injection (Fig. 8). And suction mouse
35 includes a first air / water separation tank 47 (FIG. 1) and a second air / water separation tank via a bellows 44, a fixed tube 45, and a flexible tube 46.
48 is connected, and the suction steam blower 49 (FIG. 8) is connected to the second steam separation tank 48.

The fixed tube 45 is supported by the cover 19 by a plurality of support members 51, and a bellows 44 is provided at the center of the support members 51.
The top of is inserted. Therefore, the suction mouse 35 ascends and descends according to the unevenness of the road surface like the accumulating nozzle 31. On the lower part of the partition plate 36, a Noren 52 made of a chain that prevents scattering of latance is hung, and at the mouth edge of the suction mouse 35, a shielding sheet 53 made of a flexible material such as rubber is provided over the entire circumference. Are attached to form the suction port 35a.
The air / water separation tanks 47, 48 and the suction blower 49 are mounted on the rear vehicle 5.

An ejector that circulates a scraping plate (not shown) at the bottom of the first steam separation tank 47 by the operation of a discharge hydraulic motor 54 (Fig. 1) and discharges slime and the like deposited on that part.
55 and a lid 57 that is opened and closed by a hydraulic cylinder 56 for opening and closing. Further, the rear vehicle 5 has a water supply reel.
58 and a drain reel 59 (the water reel 58 overlaps with the drain reel 59 in FIG. 1) are mounted, and the water reel 58 is connected to a water tank (not shown) connected to the water pump 33. A water supply hose (not shown) for sending water is wound, and a drain hose (not shown) around the drain reel 59 drains waste water that overflows the first steam separation tank 47. ) Has been wrapped around.

Next, the power system will be described with reference to FIG. 8. The engine 9 mounted on the front vehicle 3 is a transmission shaft in which a universal joint 63 is provided on a gear box 62 mounted on the rear vehicle 5.
You are contacted at 64. A hydraulic pump 65, 66, 67, 68, 69 is connected to each rotary shaft of the gear box 62, and a hydraulic motor (suction drive device) 71 that operates the suction blower 49 is connected to the hydraulic pump 65. Water pump for hydraulic pump 66
Hydraulic motor (water supply drive device) 72 that operates 33, and hydraulic motor (drainage drive device) that operates the drainage pump 61
73, the vertical hydraulic cylinder 26, and the hydraulic pump 67 include a hydraulic motor (reel drive device) 74 for rotating the water supply reel 58 and a hydraulic motor (reel drive device) 75 for rotating the drain reel 59. The steering hydraulic cylinders 7, 7, the left and right hydraulic cylinders 15, the opening / closing hydraulic cylinder 56, the drainage hydraulic motor 54, and the air injection hydraulic motor 79 for operating the air supply device 80 are connected to each other.

Further, the other hydraulic pump 68 has a hydraulic motor (driving drive device) 77 for rotating the drive wheels 4 via a propulsion shaft 76.
However, the hydraulic pump 24 is connected to the hydraulic motor 24. The hydraulic pumps 65 to 69 and the hydraulic motor 71
~ 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 is vertically adjustable by the handle 70.

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

Connect the free end of the water supply hose wrapped around the water supply reel 58 to the required water source, and arrange the free end of the drainage hose wound around the drainage reel 59 at the planned drainage point. Actuate hydraulic pumps 65-69,
Grinding brush 21 by rotation of hydraulic motor 24,71,72,73,77,79
Then, while the suction blower 49, the water feed pump 33, the drainage pump 61, and the air supply device 80 are operated, the traveling vehicle 1 is advanced at a slight speed by the drive 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 motors 74 and 75 are operated to rotate the water supply reel 58 and the drain reel 59. The water supply reel 58 and the drain reel are synchronized with the forward movement of the traveling vehicle 1.
Feed the water supply hose and drain hose from 59.

In the above, the grinding brush 21 rotates in the circumferential direction to grind the laitance, and the accumulation nozzle 31 jets water to collect the cleaning wastewater in front of the suction mouth 35. Further, the injection nozzle 50 sprays the air pressure-fed by the operation of the air supply device 80 onto the cleaning wastewater in the suction mouth 35, and causes the wastewater to rise to cause leitance, sand, etc. to float from the cleaning surface, and to cause water droplets . Then, the suction blower 49 irrigates the cleaning sewage, which is made up of water by the air jetted from the jet nozzle 50 and becomes water drops, into the second air / water separation tank 48, the first air / water separation tank 47, and the flexible tube. Aspirate from the suction mouse 35 via 46 or the like.

At this time, the suction mouse 35 is pulled by the pulling member 38 and moves up and down according to the unevenness of the concrete C. At this time, the accumulating nozzle 31 moves up and down together with the trolley 29 according to the unevenness of the concrete surface, accurately ejects water to a predetermined position to bring cleaning wastewater to the front of the suction mouse 35, and the suction mouse 35.
Is towed by the tow member 38 and moves up and down according to the unevenness of the concrete C, and sucks the cleaning wastewater. The shielding sheet 53 attached to the suction mouse 35 is an air suction mouse.
Suction mouse from suction 35
Improves suction from. Further, the Noren 52 provided on the partition plate 36 suppresses the scattering of the cleaning sewage in the air toward the suction mouse 35 side.

The cleaning wastewater sucked together with the air from the suction mouth 35 through the bellows 44, the fixed tube 45, and the flexible tube 46 by the operation of the suction blower 49 into the first air / water separation tank 47 causes the air in the first air / water separation tank 47 to flow. The separated slime such as leitance is deposited on the bottom of the first steam separation tank 47 to overflow the first steam separation tank 47, and is drained through the drain hose by the drainage pump 61. The air separated from the cleaning wastewater in the first air / water separation tank 47 has its water content removed in the second air / water separation tank 48, and is released to the atmosphere through the suction blower 49.

When a predetermined amount of slime has accumulated in the bottom portion of the first steam separation tank 47 in this way, the traveling vehicle 1 is stopped, the grinding operation is interrupted, the lid 57 is opened by the opening / closing hydraulic cylinder 56, and the discharging hydraulic motor 54 Then, the ejector 55 is operated to discharge the slime to the outside.

When the traveling vehicle 1 travels along the curve of the concrete C, the steering hydraulic cylinder 7 on the center side of the curve is used.
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 turns around and turns forward. In this case, since the grinding brush 21 attached to the front vehicle 3 is properly oriented in the traveling direction without breaking the relationship with the front vehicle 2, the front wheel is rotated left and right with respect to the frame. Unlike the one that changes, the grinding of laitance will always be done properly. When grinding the latance of the side edge 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 brush 21 is brought close to the side end portion of the concrete C to perform grinding work. When adjusting the grinding depth of the concrete grinding brush 21, the casters 78 are moved up and down.

When traveling the traveling vehicle 1 without performing the green cut, the vertical hydraulic cylinder 26 is extended to form a parallel link mechanism.
Rotate 10 up to cover 19 and grinding brush 2
1 and the suction mouse 35 etc. floated from the running surface
Run. Needless to say, when it is necessary to wind the water supply hose and the drain hose around the reels 58 and 59 when the traveling vehicle 1 moves backward or forward, the reels 58 and 59 are rotated in opposite directions.

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

(1) The sewage discharged from the steam separation tank 47 can be returned to the water pump for reuse.

(2) Nozzle that injects the air discharged from the suction blower 49
It can also be jetted from 50. In this case, the air injection hydraulic motor 79 and the air supply device 80 can be omitted.

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

(4) Needless to say, the suction device of the present invention is not limited to the green cutting machine and can be provided in other devices such as the washing car.

〔The invention's effect〕

As described above, in the suction device such as the green cutting machine of the present invention, the suction mouse that sucks the dirty water on the cleaning surface from the suction port is attached to the traveling vehicle with the suction port facing the cleaning surface, and the suction mouse is attached to the suction mouse. A suction blower that sucks dirty water on the washing surface via the suction mouse is connected via a water / water separation tank, and air is jetted to the dirty water on the washing surface in the suction mouse to make the dirty water ripple. Since the injection nozzle is provided so as to be connected to the air supply device, it is possible to efficiently and swiftly remove the cleaning wastewater containing the leitance and the like from the suction mouse. For this reason, the amount of water used can be kept small, and
It has the advantage that a small suction blower can be used without the need for a large suction blower.

[Brief description of drawings]

The attached drawings show an embodiment of a suction device such as a green cutting machine according to the present invention. FIG. 1 is a partially cutaway side view of a green cutting machine equipped with this suction device, and FIG. FIG. 3 is a side view showing a mounting structure, FIG. 3 is a plan view of the same, FIG. 4 is a sectional view showing a mounting structure of a grinding brush to a frame member, and FIG. 5 is a sectional view showing a mounting structure of a suction device according to the present invention. FIG. 6 is a plan view showing the relationship between the suction mouse and the integrated nozzle, FIG. 7 is a side view of the same, and FIG. 8 is a block diagram of a power system. 1 ... Traveling vehicle, 35 ... Suction mouse 35a ... Suction port, 47 ... Air / water separation tank 49 ... Suction blower, 50 ... Injection nozzle 80 ... Air supply device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Hitoshi Igarata, 730, Gunma, Gunma-gun, Gunma-cho, 730, Takasaki Plant, Niigata Iron Works (72) Inventor, Makio Fujita, Gunma-gun, Gunma, Gunma, 730, shares Niigata Iron Works Takasaki Plant (56) References Kaihei 1-23545 (JP, U) Jitsuko Sho 58-47057 (JP, Y2)

Claims (1)

[Claims] 1. A suction mouse for sucking dirty water on a cleaning surface from a suction port is attached to a traveling vehicle with the suction port facing the cleaning surface, and sucks dirty water on the cleaning surface to the suction mouse via the suction mouse. A blower is connected through a water / water separation tank, and an injection nozzle for injecting air into the dirty water on the cleaning surface in the aspirating mouse to make the dirty water ripple is provided in contact with the air supply device. A suction device such as a green cut machine that is characterized by