JP3398364B2 - Surface cutter - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a surface shaving machine,
More specifically, it relates to a low-noise surface shaving machine for shaving off surfaces such as asphalt pavement, synthetic resin pavement, mortar walls, frozen pavement roads, and freezer floor surfaces.

[0002]

2. Description of the Related Art Conventionally, the local scraping work of asphalt pavement has been carried out mainly by an operator using an air breaker or a hydraulic breaker, etc. Since it is a mechanism that reciprocates a chisel made of hard metal called chisel by using pneumatic pressure or hydraulic pressure, noise was intense and the operator was physically tired.

Therefore, a shaving machine using a vertical axis rotary disk-shaped rotary blade and a fixed axis drum rotary blade has been developed and put into practical use.

However, the former is extremely dangerous because it blows the fragments in the horizontal and tangential directions by centrifugal force.
Although the latter has low noise, it has a problem that it is difficult to remove the surface of a narrow place or a place with an overhang, and dust is not small.

Therefore, the inventor of the present invention makes the rotary shaft of the drum-shaped rotary blade substantially horizontal and allows each bit of the rotary blade to have an inclined spiral arrangement so that the outer drum-shaped rotary blade is offset in the axial direction. As a result, they have found that the above problems can be solved all at once, and as a result of various experimental studies, the present invention has been completed.

[0006]

It is an object of the present invention to allow a driver such as a backhoe (hydraulic excavator) or a manipulator to sit in the driver's seat to check the situation by rotating or temporarily stopping the rotary blade, the ceiling, It is an object of the present invention to provide a surface shaving machine that can obtain a beautiful finished surface with low noise that can follow a narrow angle or a wide angle of a work surface such as a wall, a slope or a horizontal surface.

In particular, even when the edge of the work surface is covered with an overhanging obstacle and the surface shaving machine is difficult to approach the work surface with the conventional device, it is offset from the central axis in the perpendicular direction. It is to enable surface scraping work with a rotating blade.

[0008]

DETAILED DESCRIPTION OF THE INVENTION A large number of bits 21, 21 ...
Is fixed in a spiral shape along the rotating shaft 11A.
And the fixing angle θ in the longitudinal direction of each bit 21 is
The drum-shaped rotary blade 20 aligned at 30 ° to 60 ° with respect to the axial direction and the drum-shaped rotary blade 20 are pivotally supported and driven via at least two rotary blade bearings 11 , 11. Inverted U-shaped frame with mounting bracket 7 equipped with a drive system for
Oite the surface scraping machine comprising over arm 8, a mounting bracket 7 lower plate portion 7A and / or inverted U-shaped frame upper plate portion long elongated hole along the axis 11A direction of the drum-shaped rotating blade 8A A plurality of holes are formed, and the lower end plate-shaped portion 7A of the mounting bracket is
Inverted U-shaped frame upper end plate-like portion 8A and bolt and /
Studs and nuts and / or bolts and nuts
Can be moved and adjusted in the direction of axis 11A of the drum-shaped rotary blade
11A of drum-shaped rotary blade characterized by being fastened to
It is possible to rotate 360 ° around the rotation axis 9 that is at a right angle to
Rotating and fixing mechanism 59 that can be fixed at any angle
It is detachably fixed to the backhoe arm tip 1 without
The surfaces to be scraping machine (claim 1), a nozzle 51 for preventing the scattering of debris generated ... and float lidded air
Porosity 45 is provided on the upper part so that an appropriate amount of water can be sprinkled by vibration.
Surface scraping machine according to claim 1 obtained by adding a removable sprinkler device comprising a water tank 40 which can (claim 2), a pair of height-adjustable warp 3 for adjusting the depth scraping
It comprises 0,30 claim 1 or 2 surface scraping machine according to (Claim 3), and the target surface asphalt paint, synthetic resin pavement, mortar walls, frozen pavement, in any one of the freezing floor There is provided a surface shaving machine (claim 4 ) according to any one of claims 1 to 3 .

The present invention will be described in detail below with reference to examples.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a front view of an essential part of the embodiment, and FIG.
FIG. 4 is a side view showing the operation of the embodiment. 5 is a conceptual view of the watering device, FIG. 6 is a side view showing the embodiment of the present invention being mounted on a backhoe, and FIG. 7 is a drum-shaped rotary blade pivot frame mounting portion whose position can be adjusted in the rotational axis direction. 8 is a sectional view of the same mounting portion, and FIG. 9 is a plan view of the same mounting portion.

1 to 9, 1 is a backhoe arm tip
End part, 2 is upper mounting part frame, 2A is pin, 3A, 3
B is a hydraulic motor, 4 is a pinion case, 5 is a hydraulic ho
6 is a large diameter gear case, 7 is a mounting bracket, and 7A is
Mounting bracket lower end plate-shaped part, 8 isInverted U shapeFrame, 8
A isInverted U shapeFrame top plate, 9TurningAxis, 10
Surface shaving machine main body (HoweverExample of the present inventionHas a rotation fixing mechanism
Don't), 11 is a bearing, 11A isDrum-shaped rotary blade
Shaft, 12 is a double chain, 13 is a sprocket, 14 is
Tensioner, 15 is a chaincover, 19 is a drum, 19
A is a drum surface, 20 is a drum-shaped rotary blade, and 21 is a bit.
T, R is the drum radius, S is the bit axis, and T is the tangential force.
Direction (tangential direction), 22 is a bit support, and 23 is a bit.
Hard part, 28 fender, 30 sled, 31 bol
G, 32 is a nut, 33 is a tubular bracket, and 34 is an attachment
Bolt, 35 long hole, 36 weld, 40 water tank,
41 is water,43 is a water inlet, 45 is an air port, and 46 is a float.
A lid, 48 is a valve, 49 is a water pipe,59 is a rotating / fixing machine
(However, the embodiment of the present invention does not have this.)Is.

Next, as shown in FIGS. 1 and 2, the main body of the surface trimmer is a pair of bearings 1 fixed to an inverted U-shaped frame.
1, 11 (tapered roller bearings) through which the drum-shaped rotary blade 20 is pivoted substantially horizontally (the angle can be freely changed) and its drive system includes a hydraulic motor 3A and a sprocket 13, as shown in FIG. 13 and the double chain 12 and the tensioner 14, the double chain 12 and the like are covered by a chain cover 15 for safety and protection. Na
1 and 2 show a rotation / fixing mechanism.
However, it is not necessary in the fixed type of the present invention, and the mounting bracket
Toe 7 is attached directly to backhoe arm tip 1 with pins 2A and 2A.
Because it is worn, it is lighter weight and simpler and cost reduction
Is possible.

A large number of movable bits 21 are spirally fixed to the surface of the drum-shaped rotary blade 20. The spiral arrangement of the bits prevents a large number of bits from simultaneously contacting the target surface such as the pavement surface and the biting torque becomes too large, resulting in insufficient drive torque and destruction of the drive system, and a beautiful finish. To get a face.

As shown in FIG. 3, the bit is movably loosely fitted with a slight gap on a bit support 22 which is spirally fixed (welded) to the body surface 19A of the drum 19, and the length of the bit is long. It is important that the directions are arranged substantially at an angle θ (30 ° to 60 °) with respect to the tangential direction of the drum.

If the angle θ is less than 30 °, the bit does not get caught in the target surface well, the drum-shaped rotary blade 20 becomes difficult to rotate, and uneven wear of the bit tends to proceed. Also, if the angle θ exceeds 60 °, the bit hits the target surface and the vibration and noise become severe, but the surface cutting is not effectively performed, and the rotation torque is also required to be large. Because the finished surface is not beautiful.

Therefore, 30 ° ≦ θ ≦ 60 °.

A high speed steel or a ceramic hard layer is applied to the tip of the movable play bit 21.
Since the bit does not easily wear and the bit itself slightly moves, it comes into contact with the target surface at an optimum angle and the cutting is effectively performed. The drum peripheral speed is 60 to 200 m / min. The finished groove width (interval in the bit width direction) is preferably about 0.5 to 3.5 cm. The drum peripheral speed is 60 m / min. If it does not reach 200 m / min. If it exceeds the range, noise will increase slightly and biting will tend to be insufficient. Therefore, 60 to 200 m / min. Is good. If the finished groove width is less than 0.5 cm, it is difficult to obtain adhesion at the time of the subsequent surface treatment, and if it exceeds 3.5 cm, it becomes too rough and it becomes difficult to obtain smoothness of the repaving layer.

As shown in FIG. 4, the rotating direction of the drum is a direction in which the drum is scooped up with respect to the advancing direction of the shaving machine (arrow X), that is, u.
p cut (counterclockwise arrow W direction in FIG. 4). Experience has shown that this is better. That is, in the reverse down cut, vertical vibration becomes severe and the cutting cannot be done well, but in the up cut there is no such cutting and smooth cutting is possible.

Since a large number of fine shavings 10 are generated during the shaving operation, the fenders 28, 28 regulate the scattering of the shavings. In addition, by installing a water tank above the rear fender and sprinkling water, it is possible to more effectively suppress the scattering of the debris. The water tank 40 is provided with an air hole with a float as shown in FIG. 5, and the vertical movement of the float (in the direction of arrow Z) caused by the vertical vibration of the shaving machine itself is used to intermittently introduce air, which is unnecessary. It is possible to sprinkle an appropriate amount of water (about 0.5 / min.) Without performing water sprinkling.

In FIG. 5, if the valve 48 is an electromagnetic valve, it is possible to remotely control sprinkling water from the cockpit of the backhoe 70.

In FIG. 6, 100 is a floor or paved surface (target surface), and 70 is a backhoe.

7, 8 and 9, in this embodiment, long holes 35 which are long in the axial direction of the drum-shaped rotary blade are all provided in the lower plate 7A of the mounting bracket, and the bolts 34 are inserted through these long holes. Te, by screwing the bolt screw hole provided in the inverted U-shaped frame upper plate portion 8A, the direction of the rotational axis of the drum-shaped rotary blade, position adjustment (offset) capable device brackets and inverted U-shaped frame 8 is fastened and fixed, but the long hole 35 is reversed and the inverted U-shaped frame upper end plate-like portion 8A
It may be fastened and fixed by a stud and a nut that are provided on the lower end plate-like portion 7A of the mounting bracket and are implanted downward. Even if these are mixed up and down, the effect does not change. Also
Was bored long holes on both inverted U-shaped frame on the end plate portion 8A, it may connect between them by bolts and nuts.

[0023]

By carrying out the present invention, all of the above objects can be achieved. That is, the driver can check the situation by rotating or temporarily stopping the rotary blade while sitting in the driver's seat, and the corners of the ceiling, walls, slopes, horizontal planes, etc. may have narrow or wide angles. However, a surface shaving machine that can follow this and has low noise is provided.

Further, in the device of the present invention, a long hole that is long along the rotation axis direction of the drum-shaped rotary blade is formed in the mounting bracket lower end plate-shaped portion 7 or the inverted U-shaped frame upper end plate-shaped portion 8A.
Further, since the drum-shaped rotary blades can be offset and fixed from the center position in the perpendicular direction by providing the rotary blades on both sides, even if the work surface covered with an obstacle that overhangs upward is easily removed by using the present invention. You can work on it.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a front view of a main part of the embodiment.

FIG. 3 is a side view of an enlarged main part of the embodiment.

FIG. 4 is a side view showing the operation of the embodiment.

FIG. 5 is a conceptual diagram of a watering device.

FIG. 6 is a side view showing the embodiment of the present invention attached to a backhoe during use.

FIG. 7 is a perspective view of a drum-shaped rotary blade pivotal frame mounting portion whose position can be adjusted in the axial direction of the drum-shaped rotary blade.

FIG. 8 is a sectional view of a mounting portion.

FIG. 9 is a plan view of a mounting portion.

[Explanation of symbols]

1 Backhoe Arm Tip 2 Upper Mounting Frame 2A Pins 3A, 3B Hydraulic Motor 4 Pinion Case 5 Hydraulic Hose 6 Large Diameter Gear Case 7 Mounting Bracket 7A Mounting Bracket Bottom Plate 8 Inverted U-shaped Frame 8A Inverted U-shaped Frame upper plate-shaped portion 9 rotating shaft (not the present invention.) 10 surface scraping body 11 the axis of the bearing 11A drum-shaped rotary blade 12 double chain 13 sprockets 14 the tensioner 15 chain cover 19 drum 19A drum surface 20 a drum-shaped rotating Blade 21 Bit R Drum radius S Bit axis T Tangent direction (tangential direction) 22 Bit support 23 Bit hard part 28 Fender 30 Sleeve 31 Bolt 32 Nut 33 Cylindrical bracket 34 Mounting bolt 35 Long hole 36 Weld 40 Water tank 41 Water 43 Water inlet 45 Air port 46 Float lid 48 Valve 49 Water pipe 59 rotation / stop mechanism (not required in the present invention)

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E01C 23/12

Claims (4)

(57) [Claims] 1. A large number of bits 21, 21, ...
Is fixed in a spiral shape along the rotating shaft 11A.
And the fixing angle θ in the longitudinal direction of each bit 21 is
The drum-shaped rotary blade 20 aligned at 30 ° to 60 ° with respect to the axial direction and the drum-shaped rotary blade 20 are pivotally supported and driven via at least two rotary blade bearings 11 , 11. Inverted U-shaped frame with mounting bracket 7 equipped with a drive system for
Oite the surface scraping machine comprising over arm 8, a mounting bracket 7 lower plate portion 7A and / or inverted U-shaped frame upper plate portion long elongated hole along the axis 11A direction of the drum-shaped rotating blade 8A A plurality of holes are formed, and the lower end plate-shaped portion 7A of the mounting bracket is
Inverted U-shaped frame upper end plate-like portion 8A and bolt and /
Studs and nuts and / or bolts and nuts
Can be moved and adjusted in the direction of axis 11A of the drum-shaped rotary blade
11A of drum-shaped rotary blade characterized by being fastened to
It is possible to rotate 360 ° around the rotation axis 9 that is at a right angle to
Rotating and fixing mechanism 59 that can be fixed at any angle
It is detachably fixed to the backhoe arm tip 1 without
Surface scraping machine to be. 2. A nozzle 51, 51 ... And an air hole 45 with a float lid are provided at the top for preventing scattering of generated fragments.
A water tank 4 that can provide an appropriate amount of water by vibration
The surface shaving machine according to claim 1, further comprising a detachable sprinkling device including 0 . 3. A scraping surface scraping machine according to claim 1 or 2 comprising a pair of height-adjustable warp 30, 30 for adjusting the depth. 4. A target surface asphalt paint, synthetic resin pavement, mortar walls, frozen pavement, the surface scraping machine according to any one of claims 1 to 3 which is one of the refrigeration floor .