JP3089643U - Circular cutter device for paving surface - Google Patents

Abstract

(57) [Summary] [Problem] To provide a circular cutter device capable of using an engine in a horizontal position at all times in principle. SOLUTION: The frame has a substantially quadrangular shape when viewed from a plane, and has a base frame 1 provided with moving wheels 2 on a lower surface thereof, and is mounted on the base frame 1 via a horizontal shaft 3a. And a main frame 3 having a substantially box frame shape provided so as to be tiltable with respect to a horizontal plane, and a feed screw mounted vertically slidably on a side of the main frame 3 opposite to a side pivoted by the horizontal axis.
8c and the like, a sub-frame 4 which is moved up and down by a feed mechanism, a substantially frustoconical blade 7 provided at a lower portion of the sub-frame 4, and a cutter by a driving device including an engine for applying a rotational force to the blade 7 And a mechanism.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cutter device for cutting a road surface such as a paved road into a circular shape.

[0002]

[Prior art]

 Conventionally, as cutters for circularly cutting the periphery of manholes and the like on a pavement road surface, Japanese Utility Model Publication No. Sho 62-16987, Japanese Patent Application Laid-Open No. Sho 63-55204, Japanese Patent No. 2528787, etc. are known. There are still issues to be addressed.

That is, an apparatus using a cylindrical blade is not suitable for circular cutting with a small cutting radius because the diameter of the cylindrical blade is large, and also the entire apparatus because the diameter of the cutter is large. The point that the size is increased is that a device using a disk-shaped blade is not suitable for circular cutting at a deep cut because the cutting surface of the blade is flat.

In order to solve these problems, a device using a blade having a truncated cone shape has been proposed as Japanese Patent No. 2528787. However, this cutter device has the following problems. It was resolved, but it turned out to be a new problem.

[0005] That is, in the cutter device, the cutting surface of the truncated cone-shaped blade is set to a posture perpendicular to the road surface, so that its support shaft has an inclination angle with respect to the road surface, and therefore, an engine that transmits power to the support shaft is also required. The problem is that the device is mounted on the device in an inclined state.

[0006] This is because a general-purpose engine used for a road surface cutter device is usually designed and manufactured for use in a horizontal posture, and therefore, it is always in an inclined state during use. This is not desirable for cooling and cooling.

[0007]

[Problem to be Solved by the Invention] Accordingly, an object of the present invention is to provide a circular cutter device in which an engine can always be used in a horizontal posture.

[0008]

[Means for Solving the Problems]

 The configuration of the circular cutter device according to the present invention made to solve the above-described problem is a frame having a substantially rectangular shape when viewed from a plane, and a base frame provided with a wheel for movement on a lower surface thereof; A main frame having a substantially box frame shape provided by being mounted on the base frame via a horizontal axis so as to be tiltable with respect to a horizontal plane, and a main frame having a substantially frame-shaped main frame and a side opposite to a pivot side of the main frame. A sub-frame which is mounted to be vertically slidable and moved up and down by a feed mechanism such as a feed screw, a substantially frustoconical blade provided at a lower portion of the sub-frame, and applies a rotational force to the blade. And a cutter mechanism using a driving device including an engine.

In the cutter device of the present invention, a radius regulating arm member for regulating a cutting radius may be provided on the shaft pivot side of the main frame so as to be able to move up and down with respect to the main frame. Further, the wheels in the base frame are preferably swiveling free wheels, and more preferably the wheels are provided with a swing locking mechanism.

In the above-mentioned main frame, an operating handle of the cutter device is provided on an upper side of the side where the sub-frame is not provided. This handle may be provided with a length adjusting mechanism for changing the length of the handle at its mounting portion.

[0011]

[Embodiment of the invention]

 Next, an embodiment of the circular cutter device of the present invention will be described with reference to the drawings. 1 is a rear view of an example of the circular cutter device of the present invention, FIG. 2 is a right side view of the cutter device of FIG. 1, and FIG. 3 is a right side showing a state in which a main frame is inclined with respect to a base frame in the cutter device of FIG. FIG. 4 is a side view of an example of the blade.

In FIG. 1, reference numeral 1 denotes a base frame formed by a channel material or the like into a rectangle that is close to a square when viewed from above, and the base frame of this embodiment protrudes outside the frame 1 at four locations near its four corners. A wheel mounting seat 1a is provided, and a swivelable (turnable) free wheel 2 is mounted on the lower surface side of each mounting seat 1a. By using a free wheel 2 having a lock means (not shown) for restraining the swinging motion, the cutter device of the present invention can be applied to straight cutting.

Reference numeral 3 denotes a main frame which is substantially the same in plan shape as the base frame 1 and is formed of a mold steel or a channel material so as to form a somewhat vertically long box frame shape. The lower left portion of 2 is pivotally attached to the base frame 1 by a horizontal shaft 3a or a screw thread, and is mounted so that it can be inclined with respect to the horizontal base frame 1 around the shaft 3a.

4 is a rail (not shown) attached to the main frame 3 and a rail slidably mounted on the side of the main frame 3 (right side in FIG. 2). A sub-frame mounted vertically slidably with respect to the main frame 3 by supporting the slide block with a slide mechanism of a linear slide block (not shown) mounted on the sub-frame 4. A drive source 5 by an internal combustion engine or the like for imparting rotation to the blade 7 described later, and a speed reducer connected to the drive source 5 for transmitting rotation to the blade 7 include a pulley, a belt, and the like. A transmission mechanism 6 and a cutter mechanism formed by a frustoconical blade 7 connected to an output shaft disposed below the transmission mechanism 6 Are mounted in a layout as illustrated in the figure.

The sub-frame 4 has a vertical feed mechanism for adjusting the height of the sub-frame 4 on a side surface of the main frame 3 to an arbitrary position in the vertical slide range and holding the sub-frame 4 at the adjusted position. 8 is provided between the main frame 3 and the main frame 3. The feed mechanism 8 in the illustrated example has a bearing 8a, 8b provided below and above the main frame 3 on which the sub-frame 4 is mounted, and upper and lower portions supported by the bearings 8a, 8b. A feed screw 8c provided, a nut block 8d screwed on the feed screw 8c and attached to the subframe 4, and a handle 8e provided at the upper end of the feed screw 8c for rotating the screw 8c. Is formed.

In the state shown in FIG. 2, the height of the sub-frame 4 is set so that the blade 7 floats off the road surface G. However, the handle 8e is rotated to lower the sub-frame 4 to lower the blade. 7 is grounded to the road surface G, and even if the blade 7 is grounded, even if the handle 8e is further rotated in the same direction to lower the sub-frame 4, the blade 7 is grounded. The sub-frame 4 cannot descend, and the main frame 3 rotates counterclockwise in FIG. 2 around the axis 3a to incline the main frame 3.

In the present invention, the cutting depth of the road surface G by the blade 7 starts when the blade 7 starts to cut the road surface G and the inclined main frame 3 returns to the horizontal and vertical postures. Therefore, the setting height of the sub-frame 4 with respect to the main frame 3 means that the cutting depth of the road surface G is set in advance.

Reference numeral 9 denotes a regulating arm having a cutting radius pivotally connected at its lower end to an axis 9a parallel to the axis 3a below the axis 3a of the main frame 3, and the arm 9 extends in the longitudinal direction of the arm 9. The block 9 is provided with an outward (downward) pin 10 provided on a block 10a which is slidably and fixedly mounted on the block 9. The restricting arm 9 is tilted toward the front side of the base frame 1 around the axis 9a, and the position of the pin 10 is set on the arm 9, so that the circular cutting by the cutter device according to the present invention is performed. Radius can be set. 9b is an arm holder for holding the radius regulating arm 9 in a standing posture along the main frame 3.

Reference numerals 11a and 11b denote handle holders provided on the left and right sides (see FIG. 2) of the upper surface of the main frame 3, and rod-like handles 12a and 12b made of a pipe material or the like are inserted and held in the holders 11a and 11b. The cutter device of the present invention is formed to function as a handle during operation. The two handles 12a and 12b are fixed to the respective holders 11a and 11b by holding bolts 13 with knobs provided on the holders 11a and 11b, respectively. , 12b from the side of the main frame 3 can be freely changed.

An example of the circular cutter device of the present invention is formed by the configuration from the base frame 1 to the handles 12a and 12b and the holding bolts 13 described above. Next, an example of the mode of use will be described.

The cutter device according to the present invention is carried into a place on a road surface G where a circular cut is desired, and the cut depth on the road surface G is set in the height direction of the subframe 4 on the main frame 3. Decide by doing. Next, the radius control arm 9 is detached from the holder 9b and turned down, and the block 10a is positioned on the arm 9 so that the circular center pin 10 to be cut is located.

When the depth and the radius of the circular cutting with respect to the road surface G are set in this way, the driving source 5 is activated to bring the blade 7 into a state where it can be rotated. In addition, the cutting depth of the blade 7 is not set to a target depth from the beginning, but as an example, is set so that a cutting mark is initially formed on the road surface G, and is set once at this depth. After making a circular cut, gradually increase the cutting depth. Alternatively, it may be set according to the surface condition of the road surface G to be cut or the depth at which the road surface is cut, for example, through a second cutting step at the cutting depth or after setting the cutting depth to the target cutting depth. So that cutting work can be performed.

In the circular cutter device of the present invention, after setting the cutting depth in the above-described manner and then transmitting the rotation of the driving source 5 to the blade 7, the main frame 3 that has been tilted before cutting is transmitted. Since the entire weight acts as a cutting load on the blade 7, the operator supports the handles 12 a and 12 b with both hands, and moves the cutter device along the circle where the cutting device of the present invention is to be cut around the center pin 10 of the cutting circle. The road surface G is cut circularly by moving it circularly.

In the above-described circular cutter device of the present invention, the circular cutter device of the present invention is used as a linear cutting device by aligning the wheels of the base frame 1 in the direction along the blades 7 and fixing the swing mechanism. Becomes possible.

[0025]

[Effect of the invention]

 As described above, the present invention is a frame having a substantially rectangular shape when viewed from a plane, a base frame provided with wheels for movement on a lower surface thereof, and mounted on the base frame via a horizontal shaft. The main frame has a substantially box-frame shape provided so as to be tiltable with respect to the horizontal plane, and is mounted on the side of the main frame facing the pivotal side of the horizontal axis so as to be vertically slidable and has a feed screw. And the like, a sub-frame moved up and down by a feed mechanism, a substantially frustoconical blade provided at a lower portion of the sub-frame, and a cutter mechanism by a driving device including an engine for applying a rotational force to the blade. As a result, the drive source can maintain the horizontal position most of the time during the cutting operation. There is no room for a problem by the engine inclination occurs in over device.

Also, the cutter device of the present invention can be used as a straight cutting device by fixing the running wheels, so that both straight cutting and circular cutting of the road surface can be performed, and versatility as a road cutting device can be achieved. high.

[Brief description of the drawings]

FIG. 1 is a rear view of an example of the circular cutter device of the present invention.

FIG. 2 is a right side view of the cutter device of FIG. 1;

FIG. 3 is a right side view showing a state in which a main frame is inclined with respect to a base frame in the cutter device of FIG. 2;

FIG. 4 is a side view of an example of a blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base frame 1a Mounting seat 2 Wheel 3 Main frame 3a Horizontal axis 4 Subframe 5 Drive source 6 Transmission mechanism 7 Blade 8 Feed mechanism 8a, 8b Bearing 8c Feed screw 8d Nut block 8e Handle 9 Restriction arm 9a Axis 9b Arm holder 10 pin 10a Block 11a, 11b Handle holder 12a, 12b Bar-shaped handle G Road surface

Claims (4)

[Utility model registration claims] 1. A frame having a substantially quadrangular shape when viewed from a plane, comprising a base frame provided with wheels for movement on a lower surface thereof, and a frame mounted on the base frame via a horizontal axis to form a horizontal plane. A main frame having a substantially box frame shape provided to be tiltable with respect to the main frame, and a main frame, which is mounted on the side facing the pivotal side by the horizontal axis and is slidable up and down, and is provided with a feed mechanism such as a feed screw. A sub-frame to be moved up and down, a substantially frustoconical blade provided at a lower portion of the sub-frame, and a cutter mechanism by a driving device including an engine for applying a rotational force to the blade. Cutter device for paving surfaces to be cut. 2. A radius regulating arm member for regulating a cutting radius is provided on the side of the main frame pivotally connected to the base frame so as to be able to move up and down with respect to the base frame.
Circular cutter equipment for paving surfaces. 3. The pavement surface circular cutter device according to claim 1, wherein the wheel is a swingable free wheel and has a swing lock mechanism. 4. An operation handle for the cutter device is provided on an upper surface of the main frame on which the subframe is not provided, and a length adjustment portion for changing a length of the handle in use is provided on a mounting portion of the handle. The circular cutter device for a pavement surface according to any one of claims 1 to 3, further comprising a mechanism.