JPH0633420A - Sludge recovering mechanism for concrete cutter - Google Patents

Abstract

PURPOSE:To recover sludge by effecting separation of sludge into chips, air, and water for processing. CONSTITUTION:Cooling water is fed to a blade 1 through a cooling water pipe 55 and sludge generated resultant from cutting of concrete is sucked in a sludge air separating device by using a blower 32. Drain after separation effected by the sludge air separating device is discharged to the outside of a machine by means of a water pump 31. Chips are caused to reside in a sludge filter 41 and suction air is discharged by means of the blower 32. Further, a sludge filter 41 is of a drawer type.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge recovery mechanism of a concrete cutter for cutting concrete or the like on a paved road surface.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a concrete cutter has been known. For example, JP-A-6
No. 3-32004, Japanese Patent Laid-Open No. 63-284302, Japanese Utility Model Publication No. 50-119230, and Japanese Utility Model Publication No. 5
1-48324, JP 63-126407, JP 60-32168, JP 58.
-28003.

[0003]

Since the concrete cutter cuts hard concrete with a rotating blade, the blade is likely to be heated, and the cut portion is cooled from the water tank 63 through the cooling water pipe 55. Water is always supplied. Therefore, mud-like sludge is formed inside the blade cover by cooling water and cutting powder, and it is necessary to collect this sludge at the same time as cutting. In the present invention, a blower 32 and a water pump 31 are provided to collect sludge and separate it into air and water for processing. Further, the blade cover 16 is configured to surely suck the sludge toward the sludge / air separation device without letting the sludge escape.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, the cooling water is supplied from the cooling water pipe 55 to the blade 1 and the sludge generated by cutting the concrete is sucked into the sludge / air separation device by the blower 32, and the drainage after separation is performed in the sludge / air separation device. Is discharged to the outside of the machine by a water pump 31, cutting powder is retained in a sludge filter 41, and sucked air is discharged by a blower 32.

Further, the sludge filter 41 is of a pull-out type, and only the sludge filter 41 is pulled out from the sludge / air separation device portion so that the inside can be cleaned.

Further, a semicircular blade cover 16 is provided around the blade 1, and a bellows cover 44 is interposed between the blade cover 16 and the ground surface, and sludge is attached to the front and rear ends of the bellows cover 44. Suction covers 45 and 46 are attached, and a suction pipe 56 from the blower 32 is connected to the sludge suction covers 45 and 46.

Also, the sludge suction covers 45 and 46 are
It is pivotally supported on the front and rear ends of the bellows cover 44 via pivot shafts 57 and 58, and sludge suction covers 45 and 46 and the bellows cover 44 are provided.
Is capable of adhering to the ground surface.

[0008]

[Operation] Next, the operation will be described. For cutting concrete, while moving forward, the blade 1 that rotates on the side of the machine 1
Cut into concrete. Since high temperature is generated when cutting hard concrete with the rotating blade 1, water is supplied from the water tank 63 into the blade cover 16 by the cooling water pipe 55 so as to cool it and prevent cutting powder from scattering. ing. The cooling water and cutting powder become sludge in the form of mud. The sludge is sucked into a sludge / air separation device by a suction pipe 56, separated into water, powder and air, and can be treated by a water pump 31, a blower 32 and a sludge filter 41, respectively.

[0009]

EXAMPLES Next, examples will be described. 1 is an overall side view of the concrete cutter of the present invention, FIG. 2 is a plan view of the concrete cutter of the present invention, FIG. 3 is a rear view of the concrete cutter, and FIG. 4 is a circuit diagram of a sludge recovery mechanism of the concrete cutter of the present invention. FIG. 5 is a side sectional view of the water pump 31, the blower 32, and the blower electromagnetic clutch 34. FIG. 6 is an overall configuration diagram of the sludge recovery mechanism of the concrete cutter of the present invention. FIG. 7 is the blade cover 16 and the bellows cover 44. 8 is a perspective view of a pull-out type sludge filter 41 in the sludge / air separation device, and FIG. 9 is a rear cross-sectional view of a portion of the sludge / air separation device.

The overall construction of the concrete cutter of the present invention will be described with reference to FIGS. 1, 2 and 3. An engine E, a radiator 14, a fuel tank 15, a steering handle 13 and the like are arranged on the main frame 2.
A battery 54 is arranged below the fuel tank 15, and a radiator fan 28 is arranged between the radiator 14 and the engine E. The radiator fan 28 sucks air from the rear of the radiator 14 and
And the cooling air is discharged in the direction of blowing to the engine E.

In the engine E, the crankshaft is arranged in the front-rear direction, and the hydraulic pump 18 for driving the blade 1 is provided at the front end portion of the crankshaft projecting.
Are arranged. Further, a hydraulic oil tank 27 is arranged above the hydraulic pump 18 and in front of the engine E.
The hydraulic pump 18 is provided with a continuously variable shift lever that changes the discharge amount of pressure oil to shift the rotation speed of the hydraulic motor 20. The pressure oil discharged from the hydraulic pump 18 is sent to a hydraulic motor 20 attached to the blade drive mission 10 by a flexible pipe, and the rotation of the hydraulic motor 20 is rotated by a transmission device in the blade drive mission 10 to rotate the blade 1. is doing. Since the flexible pipe is provided, power can be transmitted even when the lift arm 9 rotates the blade 1 up and down.

At the lower part of the main frame 2, rear wheels 8 and 8
And front wheels 12 and 12 are arranged. Power from the engine E is transmitted to the rear wheels 8 and 8 from a traveling mission case equipped with a ring cone type continuously variable transmission mechanism. Between the rear wheels 8 and 8 and the front wheels 12 and 12, four laterally moving wheels 17, 17, 17 and 17, which allow the concrete cutter body to move laterally, are arranged. The laterally moving wheel 17 is normally lifted by a hydraulic cylinder, and only when lateral movement is required, the laterally moving wheel 17 is made to project from the rear wheel 8.8 and the front wheel 12, 12 by the hydraulic cylinder so that the laterally moving wheel 17 can be lifted. The machine is lifted by 17 to enable lateral movement.

A pivotal support portion 3 is provided on the side of a main frame 2 constituting the machine body, and a rear end position of a lift arm 9 is pivotally supported on the pivotal support portion 3. An elevating cylinder 6 is interposed between the middle of the lift arm 9 and the main frame 2, and the elevating cylinder 6 is composed of a double-acting cylinder. The lift arm 9 can be lifted by the lift cylinder 6, and conversely, the lift arm 9 and the blade 1 can be pushed down by the lift cylinder 6.

A blade drive mission 10 is fixed to the tip of the lift arm 9, and a hydraulic motor 20 is provided at the front portion of the blade drive mission 10 on the main frame 2 side.
, And the hydraulic motor 20 is arranged in a state of overhanging on the front portion of the main frame 2. Further, a blade cover 16 attached to the lift arm 9 and covering the rotating outer circumference of the blade 1 is formed in a semicircular shape. Further, the straight-ahead position detection sensor 11 is arranged so as to be capable of expanding and contracting so as to project forward from the lift arm 9. Further, the cutting steering handle 4 is fixed to the main frame 2 and is arranged on an extension line connecting the straight-ahead position detection sensor 11 and the blade 1, so that the operator strongly operates the cutting steering handle 4 left and right. This allows fine adjustment of the cutting direction of the blade 1 manually.

A straight advancing control wheel 5 which is fitted in the groove cut by the blade 1 is constructed, and a pressing force in the left and right direction is applied to the straight advancing control wheel 5 by the balance cylinder 21 in a state of being fitted in the cutting groove. Blade 1
It is possible to control the vehicle to go straight. The straight control wheel 5
Is a large diameter idler wheel 5a fitted in the groove cut by the blade 1.
Part, and a small diameter idler wheel 5b that is grounded on the ground and idles,
The large diameter idler wheel 5 is composed of the straight-travel control wheel shaft 5c.
a and the small diameter idler wheel 5b are fixedly mounted, and are loosely fitted to the straight advance control wheel shaft 5c via a bearing. When the control by the straight-ahead control wheel 5 and the balance cylinder 21 is not performed, the straight-ahead control wheel 5 can be lifted up and released. A simple platform 30 is arranged below the steering handle 13 so that the operator can easily get on the platform.

FIG. 4 shows an overall circuit diagram of the sludge recovery mechanism of the present invention. That is, an appropriate amount of cooling water is dripped from the water tank 63 onto the blade cover 16 of the blade 1. This cooling water becomes muddy by the cutting powder, and the muddy is sucked together with suction air by the blower 32,
The sludge / air separation device constitutes a drainage tank 40 and a sludge filter 41, the drainage is discharged by a water pump 31, the separated air is discharged by a blower 32, and the separated cutting waste is collected in the sludge filter 41. It can be taken out. The amount of drainage to the drainage tank 40 is detected by a cooling water sensor S to detect the presence or absence of cooling water. When the cooling water sensor S detects that the cooling water has run out, the blower 32 is stopped and the electromagnetic traveling clutch 33 is used to stop traveling.
Reference numeral 42 is a full water sensor when the amount of cooling water dropped is too large.

FIG. 5 discloses the actual shapes of the water pump 31 and the blower 32. The blower 32 can be automatically turned on and off via a blower electromagnetic clutch 34. In FIG. 6, the bellows cover 44, the sludge suction covers 45 and 46, and the pivot shafts 57 and 58 are shown. Cooling water is supplied to the blade 1 from the water tank 63 through the cooling water pipe 55, and the cooling water from the cooling water pipe 55 and the cutting powder of concrete form a sludge in the form of mud. is there. It is necessary to collect this sludge, and a bellows cover 44 is provided below the blade cover 16 to seal the gap between the blade cover 16 and the ground surface.
Sludge suction cover 45/46 pivotally supported by 7.58
From this part, the suction pipe 56 is extended to suck the sludge.

A blower 32 sucks the sludge, and a negative pressure is generated to suck water, powder and air at the same time, and a drain tank 40 constituting a sludge / air separation device.
I will guide you to. The drainage tank 40 and the sludge filter 41
The check valve 43 and the full water sensor 42 constitute a sludge / air separation device. A part of the air separated by the sludge / air separation device is sucked into the blower 32 and discharged. In the configuration, the sludge filter 4
No. 1 has a drawer shape, and facilitates powder discharge. Further, the air blown from the blower 32 is blown onto the engine E to form cooling air. Also, the sludge filter 4
The water separated by 1 is drained by the water pump 31.

FIG. 7 shows the relationship between the bellows cover 44 and the blade cover 16. The bellows cover 4
4 and sludge suction covers 45 and 46 are pivot shafts 57.5
It is pivotally supported by 8 and can be bent by the three members, so that it is in close contact with the ground and the close contact between the bellows cover 44 and the ground surface is improved. 8 and 9 show the sludge filter 41.
The figure shows a configuration in which is a slide drawer.

[0020]

Since the present invention is constructed as described above, it has the following effects. That is, since it is configured as in claim 1, the mixture of cutting powder, cooling water, and suction air can be separated into three parts by a sludge / air separation device, and each of them must be discharged in a pollution-free state. Since it can be done, it does not pollute the road surface after cutting.

Further, according to the second aspect of the present invention, since concrete lumps other than powder discharged by the water pump 31 are collected in the sludge filter 41, the sludge filter 41 can be drawn out and discharged. It is possible to prevent the sludge filter 41 from gradually becoming clogged and the overall capacity of the sludge / air separation device from decreasing.

Further, according to the third aspect of the invention, since the bellows cover 44 can make a sealed state between the lower end of the blade cover 16 and the ground surface, unnecessary air can be sucked from this portion. None, and the sludge inside does not flow out. Further, since the suction pipe 56 is attached to the sludge suction covers 45 and 46 instead of attaching the suction pipe 56 to the bellows cover 44, the sludge suction covers 45 and 46 are firmly fixed. Therefore, the bellows cover 44 is no longer bent or twisted by the suction pipe 56.

Further, according to the fourth aspect of the invention, since the bellows cover 44 and the sludge suction covers 45 and 46 can be bent separately at the pivot shafts 57 and 58,
It was possible to contact the ground surface at any time with a free attitude, and to close the gap formed with the ground surface.

[Brief description of drawings]

FIG. 1 is an overall side view of a concrete cutter of the present invention.

FIG. 2 is a plan view of the concrete cutter of the present invention.

FIG. 3 is a rear view of the concrete cutter.

FIG. 4 is a circuit diagram of a sludge recovery mechanism of the concrete cutter of the present invention.

FIG. 5 is a side sectional view of a water pump 31, a blower 32, and a blower electromagnetic clutch 34.

FIG. 6 is an overall configuration diagram of a sludge recovery mechanism of the concrete cutter of the present invention.

FIG. 7 is a front sectional view of a portion of a blade cover 16 and a bellows cover 44.

FIG. 8 is a perspective view of a pull-out type sludge filter 41 in the sludge / air separation device.

FIG. 9 is a rear cross-sectional view of a portion of the sludge / air separation device.

[Explanation of symbols]

 E engine 1 blade 16 blade cover 27 hydraulic oil tank 31 water pump 32 blower 40 drainage tank 41 sludge filter 44 bellows cover 45,46 sludge suction cover 55 cooling water pipe 56 suction pipe 57,88 pivot shaft 63 water tank

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Kitasaka 1-32 Chayamachi, Kita-ku, Osaka City, Osaka Yanmar Diesel Co., Ltd.

Claims (4)

[Claims] 1. A sludge generated by cutting cooling concrete by supplying cooling water to a blade 1 from a cooling water pipe 55 is sucked into a sludge / air separation device by a blower 32, and separated in the sludge / air separation device. A sludge collecting mechanism for a concrete cutter, characterized in that the waste water afterward is discharged to the outside of the machine by a water pump 31, cutting powder is retained in a sludge filter 41, and sucked air is discharged by a blower 32. 2. A sludge for a concrete cutter, characterized in that the sludge filter 41 according to claim 1 is of a pull-out type, and only the sludge filter 41 is pulled out from a portion of a sludge / air separation device to enable cleaning of the inside. Collection mechanism. 3. A semicircular blade cover 16 is provided around the blade 1, and a bellows cover 44 is interposed between the blade cover 16 and the ground surface, and sludge is provided at the front and rear ends of the bellows cover 44. A sludge collecting mechanism for a concrete cutter, characterized in that suction covers 45 and 46 are attached, and a suction pipe 56 from the blower 32 is connected to the sludge suction covers 45 and 46. 4. The sludge suction cover 45 according to claim 3.
・ 46 on the front and rear ends of the bellows cover 44
A sludge collecting mechanism for a concrete cutter, which is pivotally supported through a sludge suction cover 45/46 and a bellows cover 44 so that they can be closely attached to the ground surface.