JPH0724411Y2 - Double road cutter - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention relates to a dual type road surface cutter, which cuts the road surface of concrete pavement, asphalt pavement, etc. at the same time by one step with an appropriate adjustment width, and by two steps of conventional reciprocation, especially after step Can be cut without fear that the gap with the cutting groove cut in the previous step may be indefinite, and it is easy to adjust the width of simultaneous cutting, etc., and to perform the adjustment work and maintaining the adjusted width. It is intended to provide a road cutter that is tough.

[0002]

BACKGROUND OF THE INVENTION Road cutters are well known, but in the past are of the series type. However, it is necessary to dig a groove in the road surface to cut the road surface, and it is necessary to cut in two parallel lines corresponding to the groove width. However, there is no road surface cutter that cuts two lines simultaneously in one step.

[0003]

The present invention is excellent in efficiency by cutting the road surface in parallel at a width corresponding to the groove width at the same time. Further, the width adjustment of the simultaneous cutting is facilitated, and the adjustment work and adjustment width are made. It is an object of the invention to develop a road surface cutter that makes the holding of roads robust.

[0004]

In the dual road surface cutter of the present invention, a power box 1 is mounted on a pair of wheels 2 and two widthwise road surface cutters 3 and 4 are attached to the power box 1. Provided on the front surface, one road surface cutter 3 has a large number of sliding grooves 12 on the inner surface.
The pipe shaft 11 provided with the pipe shaft 11 is connected, the pipe shaft 11 is supported by the first bearing block 10, and the other road surface cutter 4 is connected with the spline shaft 23 that extends and contracts through the pipe shaft 11. 23 is supported by a second bearing block 22, and a long hole 20 in the width direction is provided in either one of the first bearing block 10 and the second bearing block 22 and the first plate 8 fixed to the power box is provided. And the other one is attached to the second plate 14 in which the bolt 21 passed through the elongated hole 20 is screwed with an appropriate adjustment width, and the pipe shaft 11 is driven by the engine mounted in the power box 1. It is a feature and meets the above-mentioned purpose.

[0005]

According to the present invention, the bolt 21 passing through the long hole 20 of either the first plate or the second plate is loosened, and the spline shaft 23 is engaged with the pipe shaft 11 so as not to rotate, The other road surface cutter 4 is moved on the basis of the road surface cutter 3 of No. 1, and the first bearing block 10 supporting the pipe shaft 11 and the second bearing block 2 supporting the spline shaft 23.
2 is attached to either the first plate or the second plate 14, and the connection between the first plate 8 fixed to the power box and the second plate 14 is made into the long hole 20.
Since it is performed by using the bolts and the bolts 21, not only it is easy to adjust the width of the road surface of the dual type road surface cutters 3 and 4, but also the distance between the road surface cutters 3 and 4 is firmly held and adjusted.
There is an effect that the cut grooves in parallel with two threads can be accurately formed by one operation at the same time without causing a deviation due to vibration or the like not only during work but also during transportation.

[0006]

1 is a partially cutaway front view, FIG. 2 is a partially cutaway plan view, FIG. 3 is a side view, and FIG. 4 is a front perspective view. 5 is an enlarged sectional view of the tube axis and the spline axis.

Reference numeral 1 denotes a power box having a rear portion mounted on the shafts of a pair of wheels 2, and two widthwise road surface cutters 3 and 4 are provided on the left and right of the front surface of the power box 1. An engine is mounted inside the power box 1, and a cutter drive shaft 7 in which a belt 6 is hung on an output shaft of the engine or an interlocked driven shaft 5 is arranged on the lower surface of the front part of the power box 1.

A first plate 8 bent in an L shape is attached to the front surface of the power box 1, and the first bearing block 1 is attached to the lower surface of a horizontal surface 9 of the first plate 8.
Nos. 0 and 10 are mounted at intervals, and the bearing block supports the tube shaft 11, which is the rotation shaft of the road surface cutter 3, only in rotation. A large number of sliding grooves 12 are provided on the inner surface of the tube shaft 11. Further, the bearing blocks 10, 1 are attached to the tube shaft 11.
The cutter drive shaft 7 is attached to the V pulley 30 fixed between 0
The V-belt 31 hung from the shaft is fitted and driven.

A first elongated hole 1 in the width direction is provided on the front surface of the power box 1.
Vertical surface 1 of the second plate 14 provided with 3, 13 and bent in an L shape
5, the headed bolt 17 passed through the elongated holes 13 and 13 is screwed, and the second plate 14 is telescopically fixed to the power box 1 by the lock nut 18 so that the second plate 14 Auxiliary plate 1 extending in the direction of road cutter 3 on the lower surface of horizontal plane 16 of
9 is attached, and second slots 20 and 20 parallel to the slots 13 and 13 of the power box 1 are provided on the surface of the auxiliary plate 19 that overlaps the horizontal surface 9 of the first plate 8, and the slots 20 and The bolts 21, 21 passed through 20 are screwed onto the horizontal surface 9 of the first plate 8.
The second bearing block 22 is attached to the lower surface of the auxiliary plate 19 corresponding to the lower surface portion of the horizontal surface 16 of the second plate 14, and the spline shaft 23, which is the rotation shaft of the road surface cutter 4, is freely supported only for rotation. The spline shaft 23 is the pipe shaft 11
It is slidably connected to and is locked in the direction of rotation by the sliding groove 12. 32 is a dust cover.

[0010]

[Effects of the Invention] The present invention has the above-described structure, and since the cutting resistance applied to the double type road surface cutters 3 and 4 is large, the road surface cutting speed is slightly delayed as compared with the series type road surface cutter.
The width of cutting can be easily adjusted to the width of excavation of the groove, and the width adjustment work of the two-road-surface cutter can be easily performed while maintaining the adjustment width as described in the section of the action. There is an effect that the connection of 4 can be made robust by using the long hole and the bolt.

[Brief description of drawings]

 The accompanying drawings show an embodiment of the present invention,

1] Partially cutaway front view

FIG. 2 is a partial cutaway plan view

[Fig. 3] Side view

FIG. 4 is a front perspective view.

FIG. 5 is an enlarged cross-sectional view of a pipe shaft and a spline shaft.

[Explanation of symbols]

1 power box, 2 wheels, 3, 4 road cutter, 5
Output shaft or driven shaft, 6 belt, 7 cutter drive shaft, 8 first plate, 9 horizontal surface, 10 first bearing block, 11 tube shaft, 12 sliding groove, 13 first
Slotted hole, 14 second plate, 15 vertical surface, 16 horizontal surface, 17 headed bolt, 18 lock nut, 1
9 auxiliary plate, 20 second long hole, 21 bolt, 2
2 2nd bearing block, 23 Spline shaft, 30
V pulley, 31 V belt, 32 dust cover

Claims (1)

[Scope of utility model registration request] 1. A power box 1 is mounted on a pair of wheels 2, and two widthwise road surface cutters 3 and 4 are provided on the front surface of the power box 1. One road surface cutter 3 has a large number of inner surfaces. The pipe shaft 11 provided with the sliding groove 12 is connected, and the pipe shaft 11 is
Bearing block 10 supports the other road surface cutter 4
Is connected to a spline shaft 23 that extends and contracts through the pipe shaft 11, and the spline shaft 23 is connected to the second bearing block 22.
Is supported by the first bearing block 10 and the second bearing block 10.
A long hole 20 in the width direction is provided in either one of the bearing blocks 22 and is attached to the first plate 8 fixed to the power box,
The other one is attached to a plate 14 of 2 which is screwed with a bolt 21 which is passed through the elongated hole 20 with an appropriate adjustment width,
Is driven by an engine mounted on the power box 1. A dual road surface cutter.