JP3126241U - Paving road surface cutting device - Google Patents

Abstract

The present invention provides a pavement surface cutting device having a configuration in which the attachment position of a cutting blade is offset from the center line in the vehicle body traveling direction and is variable.
In a pavement surface cutting apparatus 10 having a vehicle body 20 having wheels and a cutter unit 40 having a disk-like cutting blade 41, the disk-like cutting blade is offset from the vehicle body width center line. It has a lateral movement means 30 that is movable. The cutter unit includes a post 42 and an arm 43 that is connected to the post in a swingable manner and has a rotating shaft 44 of a disc-shaped cutting blade in the vicinity of the tip thereof, and is a lateral slide provided in front of the vehicle body. A post is fixed along the rail 31 so as to be laterally movable.
[Selection] Figure 2

Description

  The present invention mainly relates to a paved road surface cutting device used for cutting a paved road surface in an area to be repaired when repairing the paved road surface.

Conventional examples of such a paved road surface cutting device are described in Patent Documents 1 and 2 below. According to these prior arts, a disc-shaped cutting blade attached to the front of the traveling vehicle body is bitten into the paved road surface while rotating at a high speed, so that the paved road surface is perpendicular to the running direction (Patent Document 1). Alternatively, the paved road surface can be cut with an oblique cut surface (Patent Document 2).
Japanese Patent Laid-Open No. 9-302613 JP 2003-184027 A

  In these conventional paved road surface cutting devices, a cutting blade is attached substantially on the center line in the traveling direction of the vehicle body. However, depending on the situation of the repair work site, the vehicle running road surface may be an unpaved road surface or a road surface that is already being paved, and in such a case, the vehicle body can be driven stably. In addition, the biting depth and angle of the cutting blade with respect to the road surface become unstable, making the intended cutting operation difficult.

  Therefore, in view of these disadvantages of the prior art, the main problem to be solved by the present invention is a configuration in which the mounting position of the cutting blade is offset from the center line in the vehicle running direction and can be made variable. Another object is to provide a paved road surface cutting device.

  As a means for solving this problem, a paved road surface cutting device according to the present invention according to claim 1 is a paved road surface cutting device having a vehicle body having wheels and a cutter unit having a disk-shaped cutting blade. In the present invention, the disc-shaped cutting blade has a lateral movement means that can move to a position offset from the vehicle body width center line.

  According to a second aspect of the present invention, there is provided the paved road surface cutting device according to the first aspect, wherein the cutter unit is connected to a post and the post so as to be swingable, and a rotary shaft of a disk-shaped cutting blade is provided in the vicinity of the tip. The lateral movement means can move the post to the horizontal slide rail at an arbitrary point or a plurality of points along the horizontal slide rail. It is characterized by comprising a fixing means for fixing.

  According to a third aspect of the present invention, there is provided the paved road surface cutting apparatus according to the second aspect, wherein the post is swingable about an axis parallel to the vehicle body traveling direction, and the paved road surface is directly cut by a disc-shaped cutting blade. Is characterized in that the post is set upright on the road surface on which the vehicle body travels, and when the paved road surface is cut obliquely, the post is inclined at a predetermined angle with respect to the road surface.

  According to a fourth aspect of the present invention, in the paved road surface cutting device according to the second or third aspect, the disc-shaped cutting blade can be selectively attached to the outside or the inside of the arm.

  According to a fifth aspect of the present invention, in the paved road surface cutting device according to the fourth aspect, the post is fixed to the outermost position of the lateral slide rail, and a disc-shaped cutting blade is attached to the outside of the arm connected to the post. In some cases, the disc-shaped cutting blade is located outside the vehicle body width.

  The present invention according to claim 6 is the paved road surface cutting device according to claim 1, wherein the cutter unit is connected to the front of the vehicle body and extends forward in the vehicle body traveling direction; a post attached to the base; A rotating shaft lifting / lowering means for enabling the rotating shaft of the disc-shaped cutting blade to move in the length direction of the post, the horizontal moving means being provided along a horizontal slide rail provided on the base, and along the horizontal slide rail The post is configured to include a fixing means for movably fixing the post at an arbitrary point or a plurality of points.

  The present invention according to claim 7 is the paved road surface cutting device according to claim 6, wherein the base is selectively connected and fixed to any one of a plurality of mounting portions provided in front of the vehicle body, and the post is fixed to the lateral slide rail. The position of the disc-shaped cutting blade can also be moved in the lateral direction by changing the mounting portion for connecting and fixing the bases while holding them unchanged.

  The present invention according to claim 8 is the paved road surface cutting device according to claim 6 or 7, wherein the post with the disc-shaped cutting blade attached to the outside can be fixed to the lateral slide rail in the opposite direction. And

  The present invention according to claim 9 is the paved road surface cutting device according to any one of claims 6 to 8, wherein the post is swingable about an axis parallel to the vehicle body traveling direction, and the paved road surface is cut by a disc-shaped cutting blade. When cutting straight, the post is made upright on the road surface on which the vehicle body travels, and when paving road surface is cut obliquely, the post is inclined at a predetermined angle with respect to the road surface, and the cutting operation is performed. And

  According to a tenth aspect of the present invention, in the paved road surface cutting device according to any one of the first to ninth aspects, the disc-shaped cutting blade is replaceable.

  The present invention according to claim 11 is the paved road surface cutting device according to any one of claims 1 to 10, wherein the cutter unit further includes a wheel that can be grounded at a point on a substantially extended line of the disk-shaped cutting blade at the tip. The pilot arm is provided, and the vehicle body traveling and the posture of the entire cutter unit are stabilized by performing a cutting operation while the wheels are in contact with the road surface.

  According to the paved road surface cutting device of the present invention, the disc-shaped cutting blade can be moved to a position offset from the vehicle body width center line, so when cutting the paved road surface during road surface repair work, etc. If there is a non-paved road surface or a part that is already being repaired, it is possible to cut the paved road surface to be repaired while avoiding the part and running the car on a stable paved road surface. And efficiency is improved.

A paved road surface cutting device according to an embodiment of the present invention will be described below with reference to FIGS.
The paved road surface cutting device 10 has a vehicle body 20. A pair of left and right front wheels 21 and a pair of left and right rear wheels 22 are provided in the lower part of the vehicle body 20, and the output of the engine 25 to be mounted is hydraulically supplied to the rear wheels 22 via a speed reducer 23 by a required operation by the operator P. It can be transmitted and self-propelled.

  A turning wheel 24 is provided at the front center of the vehicle body 20 on an axle (not indicated) that can be moved up and down. Although the turning wheel 24 is normally retracted upward and is not grounded, the vehicle body 20 is turned (changes direction) in a state where the axle is moved downward by the required operation by the operator P and the turning wheel 24 is grounded. It can be made to.

  The vehicle body 20 is further mounted with a hydraulic pump (not shown) connected to the output shaft of the engine 25, and the medium oil from the tank (not shown) is sent to each hydraulic hose (not shown). Then, various hydraulic cylinders and hydraulic motors in the apparatus 10 are operated.

  Various operations by the operator P are performed by operating operation members such as a handle 27 and a lever 28 in an operation unit 26 provided above the rear part of the vehicle body 20.

  A cutter unit 40 to which a disc-shaped cutting blade 41 can be attached is detachably connected to the front of the vehicle body 20 via a lateral slide mechanism 30. The cutter unit 40 includes a post 42 and a swing arm 43 that is rotatably connected to the lower end of the post 42, and a cutting blade 41 can be attached to the tip of the swing arm 43. Specifically, a hydraulic motor 44 driven by the hydraulic pump 25 is provided at the tip of the swing arm 43, and its output shaft extends to both the left and right sides, and the cutting blade 41 accommodated in the cover 45 is provided on either side. It can be attached.

  The post 42 is rotatable around a horizontal axis 50 extending in parallel with the traveling direction F (see FIG. 3). By rotating around the axis 50, the post 42 can be tilted within a predetermined angle α from a state where the post 42 is vertical (perpendicular to the paved road surface G) (solid line position in FIG. 3). The maximum tilt state is shown in phantom in FIG. Although FIG. 3 shows the maximum tilt state by rotation in one direction (clockwise), it can be rotated by the same predetermined angle α from the vertical to the opposite direction (counterclockwise). The maximum inclination angle α can be set to 35 degrees, for example.

  The swing arm 43 is connected to the post 42 so as to be rotatable about a horizontal shaft 49 extending in a direction (left-right direction) orthogonal to the traveling direction F (see FIG. 1). A pilot arm 46 is connected to the tip of the swing arm 43 so as to be rotatable in a range of approximately 90 degrees. A wheel 47 is provided at the tip of the pilot arm 46 so as to be rotatable and turnable.

  The lateral slide mechanism 30 in this embodiment is configured to have a lateral slide rail 31 fixed to the front of the vehicle body 20, and the post 42 is moved along the lateral slide rail 31 within the range thereof to an arbitrary position. And fixed by arbitrary fixing means (not shown) such as bolts. In FIG. 2, reference numeral 41 a indicates the position of the cutting blade attached to the outside of the swing arm 43 when the post 42 is fixed at one extreme position on the horizontal slide rail 31, and reference numeral 41 b indicates the swing arm at the same position. 43 indicates the position of the cutting blade attached inside 43, and reference numeral 42c indicates the position of the cutting blade attached outside the swing arm 43 when the post 42 is fixed to the other extreme position in the lateral slide rail 31. 41b shows the position of the cutting blade attached to the inside of the swing arm 43 at the same position. That is, the position of the cutting blade 41 in the lateral direction with respect to the vehicle body 20 is indicated by reference numeral 41 d from the position indicated by reference numeral 41 a by arbitrarily selecting the fixing position of the post 42 within the length range of the horizontal slide rail 31. Any position within the range up to the position can be taken.

  At the upper end of the post 42, a hydraulic cylinder 48 that is driven by a hydraulic pump to expand and contract is provided so as to be rotatable about a horizontal axis, and its tip is pivotally mounted near the tip of the swing arm 43. When the road surface cutting is not actually performed, the hydraulic cylinder 48, the swing arm 43, and the cutting blade 41 are each in a standby position indicated by a solid line in FIG. 1, and when the hydraulic cylinder 48 extends from this position, The virtual line position occupies the position of the imaginary line while rotating in the clockwise direction in the figure, and the swing arm 43 also rotates in the clockwise direction in the figure to the imaginary line position in conjunction with this, and the cutting attached to the swing arm 43 The blade 41 moves to a cutting operation position (virtual line position) where the blade 41 bites into the paved road surface G. The road biting depth D 1 of the cutting blade 41 can be adjusted by the extension stroke of the hydraulic cylinder 48. Further, the pilot arm 46 rotates in the clockwise direction in the figure to become an imaginary line position that is substantially aligned with the swing arm 43 and extends, and the wheel 47 at the tip contacts the road surface G.

  The usage and action of the pavement surface cutting device 10 described above will be described. After the device 10 is placed on a truck or the like and moved to the vicinity of the pavement surface repair work site, the device 10 is lowered. The cutter unit 40 is detachable from the vehicle body 20, and the cutting blade 41 is also detachable from the output shaft of the hydraulic motor 44 of the swing arm 43. Can be put on. At this time, the turning wheel 24 is in the retracted position (FIG. 1), and the hydraulic cylinder 48 is in the contracted state (solid line in FIG. 1).

  The vehicle body 20 lowered to the ground is moved to a predetermined position on the construction site by the operator P operating the handle 27, lever 28, etc. of the operation unit 26 (or manually pushed when the engine 25 is not mounted). After that, the cutter unit 40 is attached to the carriage 20. As described above, the post 42 can be moved to any position along the lateral slide rail 31 within the length range thereof, so that the place where repair work is to be performed and the road surface condition (paved road surface or repair). The position of the vehicle body 20 and the cutting blade 41 is determined according to whether the road surface is unstable or the like, and the post 42 is moved to the side slide rail so that the cutting blade 41 takes a predetermined position with respect to the vehicle body 20. 31 is fixed at an arbitrary position. Therefore, the cutting blade 41 attached coaxially with the post 42 can take a position offset with respect to the vehicle body center line X (see FIG. 2). When the cutting blade 41 is carried in a detached state, the cutting blade 41 is attached to one of the output shafts of the hydraulic motor 44 at the upper end of the swing arm 43 at this time. It is preferable to prepare cutting blades 41 of various diameters and selectively attach them as necessary.

  Next, the cutting angle is adjusted as necessary. This is done by rotating the swing arm 43 around the horizontal axis 50 within the range of the maximum angle α to set a predetermined inclination angle. Since the swing arm 43 is normally held in a standing state (solid line position in FIG. 3), this cutting angle adjustment is not necessary when the paved road surface G is cut at a right angle. When cutting the paved road surface G at a predetermined inclination angle (≦ α), the post 42 is tilted around the horizontal axis 50 in a predetermined direction by an arbitrary angle (≦ α) by manual operation, and the cutting blade 41 is inclined at a predetermined angle. Tilt to an angle.

  When the post 42 is in the upright state and the swing arm 43 is in the standby position (solid line position in FIG. 1), the lower end of the cutting blade 41 is directly above the paved road surface G so as not to interfere with it. If the post 42 is tilted from this state, the cutting blade 41 interferes with the paved road surface G. To avoid this, the hydraulic cylinder 48 is slightly contracted before the post 42 is tilted, so that the cutting blade It is necessary to slightly raise the hydraulic motor 44 serving as the rotation shaft 41.

  This completes the preparation for the pavement surface cutting operation.

  The cutting blade 41 is rotated at a high speed by a hydraulic motor 44 driven by a hydraulic pump through a required operation in the control unit 26 by the operator P, and the hydraulic cylinder 48 is also extended by the hydraulic pump, so that the swing arm 43 rotates from the retracted position (solid line position in FIG. 1) in the clockwise direction in the figure to cause the cutting blade 41 to bite into the paved road surface G. When the cutting blade 41 rotating at high speed bites into the paved road surface G, the paved road surface G is cut by the biting depth D1. While maintaining this state, the paved road surface G is linearly cut in the same direction by causing the vehicle body 20 to travel in the direction of the arrow F with the output of the engine 25 through a required operation in the control unit 26 by the operator P. be able to.

  Further, when performing such a cutting operation, the pilot arm 46 attached to the tip of the swing arm 43 is rotationally moved from the standby position (solid line position in FIG. 1) to the grounding position (virtual line position in FIG. 1). The tip wheel 47 is grounded to the paved road surface G. The pilot arm 46 serves as a mark indicating the traveling direction of the road surface cutting operation, the wheel 47 that rotates freely while being in contact with the paved road surface G stabilizes the movement of the cutter unit 40 in the traveling direction F, and the swing arm 43 The hydraulic motor 44 at the front end is maintained in a state of floating from the paved road surface G, and the posture of the cutter unit 40 as a whole is stabilized.

  For example, after the cutting blade 41 is set at the position indicated by reference numeral 41a in FIG. 2 and the paved road surface G is linearly cut as described above, when the opposite side of the vehicle body 20 is cut, the post 42 is moved to the side slide rail 31. And the cutting blade 41 is replaced with the output shaft on the opposite side (outside) of the hydraulic motor 44 at the tip of the swing arm 43, and the hydraulic pressure is changed in the same manner as described above. The paved road surface G is cut through driving the motor 44 and extending the hydraulic cylinder 48. When cutting is performed with the swing arm 43 inclined, the direction of inclination is reversed when the opposite side of the vehicle body 20 is cut.

  When it is necessary to change the cutting direction in the straight cutting of the paved road surface G, the cutting blade is moved by moving the swing arm 43 to the retracted position (solid line position in FIG. 1) through a required operation in the control unit 26 by the operator P. After retracting 41 from interference with the paved road surface G, the turning wheel 24 is lowered using the hydraulic pump as a drive source, and the front portion of the vehicle body 20 and the cutter unit 40 are lifted, and the turning wheel 24 is moved in a predetermined direction. Turn to change direction.

  Since the cutting blade 41 can be attached to both sides of the output shaft of the hydraulic motor 44, the outer side and the inner side of the swing arm 43 are changed according to the positional relationship between the paved road surface location to be cut and the vehicle body 20 width direction. Either can be selected and attached. Further, in the case of performing oblique cutting by inclining the swing arm 43, the cutting depth D2 when the cutting blade 41 is attached to the outside (anti-inclined side) and the cutting depth D3 when attached to the inside (inclined side). Therefore, the cutting depth is changed by selecting the attachment position of the cutting blade 41.

  4 to 6 show a paved road surface cutting device 60 according to another embodiment of the present invention. The paved road surface cutting device 60 includes a vehicle body 70 and a cutter unit 80 fixed to the front of the vehicle body 70.

  The vehicle body 70 has an attachment portion 71 for attaching the cutter unit 80 to the lower front portion thereof. In this embodiment, one mounting plate 71a is fixed along the center of the vehicle body 70 in the width direction, and mounting plates 71b and 71c are fixed at equal intervals on the left and right sides of the mounting plate 71a. Part is formed, and a second attachment part is formed between the attachment plates 71a and 71c. In FIG. 2, one end of a base 81 (described later) of the cutter unit 80 is attached to the first attachment portion. Since the other structure of the vehicle body 70 may be the same as that of the vehicle body 20 in the above-described embodiment, a part of the illustration is omitted, and a detailed description of the same structure is omitted. 4 to 6, parts and elements that are the same as those of the vehicle body 20 in the above-described embodiment are denoted by the same reference numerals.

  The cutter unit 80 has a base 81 whose one end is detachably fixed to the vehicle body mounting portion 71 (71a or 71b). The base 81 includes a pair of lateral slide rails 82 extending in the lateral direction (the width direction of the vehicle body 70), and a slide frame 83 is attached to the lateral slide rail 82 so as to be slidable in the lateral direction along the lateral slide rail 82. . In the illustrated embodiment, the horizontal slide rail 82 is provided with a plurality of mounting holes 82a at the predetermined pitch so that the mounting position of the slide frame 83 can be adjusted in units of a predetermined pitch (for example, 100 mm). Although the slide frame 83 is fixed to the horizontal slide rail 82 by a fixing means (not shown) such as a bolt, it can be attached at any position within a predetermined range along the horizontal slide rail 82. good.

  A post 85 is attached to be rotatable about a horizontal shaft 84 provided at one end of the slide frame 82. The post 85 is connected by an arm 87 to a post inclination angle adjustment unit 86 fixed on the slide frame 82, and selects any one of a plurality of mounting holes 86a provided in the post inclination angle adjustment unit 86. Then, the post 85 is fixed between the upright position shown by the solid line in FIG. 6 and the maximum inclined position shown by the phantom line in FIG. 6 (for example, 35 degrees from the upright position) by fixing with a fixing means (not shown) such as a bolt. Inclined positions can be taken at predetermined angular intervals (for example, at intervals of 5 degrees). In FIG. 6, the post 85 is shown to rotate and tilt clockwise from the upright position in the figure, but may rotate and tilt in the opposite direction, or may be tilted so as to be rotatable in both directions. . As described in the above-described embodiment, when the paved road surface G is cut at a right angle (straight cut), the post 85 is in an upright position, and when the paved road surface G is cut obliquely (oblique cut), the post 85 is inclined as desired. The device 60 is operated as the moved position.

  The post 85 is provided with a hydraulic drive unit 90 including a hydraulic motor 89 for rotating the disk-shaped cutting blade 88 at a high speed so as to be movable along the extending direction of the post 85. That is, the post 85 includes a trapezoidal screw 91, and the hydraulic drive unit 90 includes an engaging portion 90a that meshes with the trapezoidal screw 91. The hydraulic drive unit 90 is rotated by rotating the trapezoidal screw 91 by a hydraulic motor 92. It can be moved up and down along the post 85.

  Reference numeral 95 is a pilot arm that has substantially the same configuration and function as the pilot arm 46 in the above-described embodiment, and is pivotally connected to the slide frame 83 at the base end thereof, and a wheel 96 rotates at the tip thereof. It is provided freely and pivotably. The wheel 96 is grounded to the paved road surface G when the paving road surface cutting device 60 is cutting. Reference numeral 94 denotes a cover for protecting the cutting blade 88 and is detachably attached to the hydraulic drive unit 90. Reference numeral 97 denotes front, rear, left, and right wheels for causing the entire cutter unit 80 to travel following the vehicle body travel.

  The usage and operation of the paved road surface cutting device 60 described above are substantially the same as those of the paved road surface cutting device 10 of the above-described embodiment, and the vehicle body 70 lowered from the truck bed or the like is moved to a predetermined position on the construction site. Then, the cutter unit 80 is attached to the carriage 70. At this time, according to the positional relationship between the vehicle body 70 and the paved road surface to be cut, a mounting portion 71 for mounting the base 81 of the cutter unit 80 (first mounting portion or mounting plate 71a formed between the mounting plates 71a and 71b, One of the second mounting portions formed between 71c is selected, and the mounting position of the slide frame 83 with respect to the horizontal slide rail 82 (the mounting hole 82a of the horizontal slide rail 82) is selected, and the cutting blade 88 is selected. To be at the desired position. FIG. 5 shows several examples of the position of the cutting blade 88 that can be adjusted by selecting the mounting hole 82 a of the lateral slide rail 82 when the base 81 is mounted on the first mounting portion 71.

  Next, as described with reference to FIG. 6, the inclination angle of the post 85 is adjusted by selecting the attachment hole 86 a of the post inclination angle adjusting portion 86 and attaching the arm 87. Since the post 85 is normally held in an upright position, this operation is not particularly necessary when performing a straight cut, and the tilt angle of the post 85 is adjusted according to the desired cutting angle when performing a diagonal cut. To do.

  This completes the preparation for the pavement surface cutting operation. At this time, the hydraulic drive unit 90 is located above the post 35 as indicated by the solid line in FIGS. 4 and 6, and the cutting blade 88 does not interfere with the paved road surface G to be cut. When performing oblique cutting, the hydraulic drive unit 90 is slightly raised by rotating the trapezoidal screw 91 by the hydraulic motor 92 before the post 85 is inclined, and the cutting blade 41 is prevented from interfering with the paved road surface G. Keep it.

  In this state, the hydraulic motor 89 is driven to rotate the cutting blade 88 at a high speed, and the hydraulic motor 92 is driven to rotate the trapezoidal screw 91 to lower the hydraulic drive unit 90 to move the cutting blade 88 to the paved road surface G. The pavement road surface G can be linearly cut along the traveling direction by a depth D4 by causing the vehicle body to bite into a predetermined depth and causing the vehicle body to travel in a predetermined direction.

  According to the paved road surface cutting device 60 of this embodiment, the cutting position of the paved road surface can be changed by several methods. The first method is to change the cutting position by changing the mounting position of the slide frame 83 (the mounting hole 82a of the horizontal slide rail 82) without changing the mounting position of the base 81 (mounting portion 71) (FIG. 5). reference). According to this, the cutting position can be changed according to the pitch of the mounting holes 82a.

  The second method is to change the mounting portion 71 and replace the base 81. For example, as shown in FIG. 5, the base 81 attached to the first mounting portion formed between the mounting plates 71a and 71b is replaced. It is once removed and replaced with the second mounting portion formed between the mounting plates 71a and 71c. According to this, the cutting position can be changed by the positional deviation of the first and second mounting portions. it can.

  The third method is to replace the slide frame 83 in the opposite direction with respect to the horizontal slide rail 82 of the base 81 (so that the cutting blade 88, the hydraulic drive unit 90, etc. can be seen from above in FIG. 5). is there. Various combinations of cutting positions can be changed (adjusted) by appropriately combining the first to third methods.

  In the pavement road surface cutting devices 10 and 60 of these embodiments, the cutting blades 41 and 88 are detachable and replaceable, and cutting blades 41 and 88 of various diameters are prepared and necessary from among them. The cutting depths D1, D4 in the case of direct cutting and the cutting depths D2, D3, D5 in the case of oblique cutting can be changed by attaching the one cutting blade 41, 88 selected accordingly. . Alternatively, several types of cutter units 40 and 80 with different cutting depths of the cutting blades 41 and 88 may be prepared in advance, and one cutter unit may be selected and used from among them. good.

  The paved road surface cutting device of the present invention is mainly used to cut the repaired part in a straight line in the repair work of the paved road surface, but the paved road surface has a rectangular shape in planting work or power pole installation work for planting plants. It can also be used for cutting into a wide variety of applications.

1 is a side view of a paved road surface cutting device according to an embodiment of the present invention. It is a top view of the apparatus. It is a front view of the cutter unit part of the apparatus. It is a side view of the pavement surface cutting device by other embodiment of this invention. It is a top view of the apparatus. It is a front view of the cutter unit part of the apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pavement surface cutting device 20 Car body 21 Front wheel 22 Rear wheel 25 Engine 30 Lateral slide mechanism (lateral movement means)
31 Horizontal slide rail 40 Cutter unit 41 Disc-shaped cutting blade 42 Post 43 Swing arm 44 Hydraulic motor 46 Pilot arm 47 Wheel 48 Hydraulic cylinder 49 Horizontal axis (rotating axis of the swing arm)
50 Horizontal axis (post tilt axis)
60 Pavement surface cutting device 70 Car body 71 Mounting portion 80 Cutter unit 81 Base 82 Horizontal slide rail 83 Slide frame 84 Horizontal axis (post tilt axis)
85 Post 88 Disc-shaped cutting blade 90 Hydraulic drive unit 91 Trapezoidal screw 95 Pilot arm 96 Wheel

Claims (11)

In a paved road surface cutting apparatus having a vehicle body having wheels and a cutter unit having a disk-shaped cutting blade, lateral movement means for moving the disk-shaped cutting blade to a position offset from the vehicle body width center line is provided. A paved road surface cutting device comprising: The cutter unit includes a post and an arm that is swingably connected to the post and has a rotating shaft of a disc-shaped cutting blade near the tip thereof, and the lateral movement means is provided in front of the vehicle body. 2. The structure according to claim 1, further comprising: a lateral slide rail, and fixing means for movably fixing the post to the lateral slide rail at an arbitrary point or a plurality of points along the lateral slide rail. The paved road surface cutting device described. The post can swing around an axis parallel to the direction of travel of the car body.When the paved road surface is cut directly with a disc-shaped cutting blade, the post is kept upright on the road surface on which the car body travels, and the paved road surface is cut diagonally. 3. The pavement road surface cutting device according to claim 2, wherein the cutting operation is performed with the post inclined at a predetermined angle with respect to the road surface. The paved road surface cutting device according to claim 2 or 3, wherein the disk-shaped cutting blade can be selectively attached to the outside or the inside of the arm. When the post is fixed at the outermost position of the lateral slide rail and the disc-shaped cutting blade is attached to the outside of the arm connected to the post, the disc-shaped cutting blade is located outside the vehicle body width. The paved road surface cutting device according to claim 4. The cutter unit is connected to the front of the vehicle body and extends forward in the vehicle body traveling direction, a post attached to the base, and a rotation that allows the rotary shaft of the disc-shaped cutting blade to move in the length direction of the post. The horizontal movement means includes a horizontal slide rail provided on the base, and a fixing means for fixing the post movably at an arbitrary point or a plurality of points along the horizontal slide rail. The paved road surface cutting device according to claim 1, wherein the paved road surface cutting device is configured as follows. The base is selectively connected and fixed to any one of a plurality of mounting parts provided in front of the vehicle body, and a disk shape is also obtained by changing the mounting part for connecting and fixing the base while maintaining the fixed position of the post with respect to the horizontal slide rail. The paved road surface cutting device according to claim 6, wherein the position of the cutting blade is movable in the lateral direction. The pavement surface cutting device according to claim 6 or 7, characterized in that the post with the disc-shaped cutting blade attached to the outside can be fixed to the lateral slide rail in the opposite direction. The post can swing around an axis parallel to the direction of travel of the car body.When the paved road surface is cut directly with a disc-shaped cutting blade, the post is kept upright on the road surface on which the car body travels, and the paved road surface is cut diagonally. 9. The pavement road surface cutting device according to claim 6, wherein the post work is performed while the post is inclined at a predetermined angle with respect to the road surface. The paved road surface cutting device according to any one of claims 1 to 9, wherein the disc-shaped cutting blade is replaceable. The cutter unit further includes a pilot arm having a wheel that can be grounded at a point approximately on the extended line of the disc-shaped cutting blade at the tip, and performing vehicle cutting and cutting while the wheel is grounded on the road surface. The paved road surface cutting device according to any one of claims 1 to 10, wherein the posture of the entire cutter unit is stabilized.

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