JPH08134834A - Mini cutter and construction method by this - Google Patents

Abstract

(57) [Abstract] [Purpose] A rotatable frame is provided on a connecting frame that can be attached to the tip of an arm of a construction machine, and a rotatable cutter rotor is supported by a support frame connected to the frame. By providing a cutting surface pressing device that allows the cutter rotor to swivel and can move up and down on the side of the cutter rotor, the cutting depth is adjusted and the reaction force at the time of operation is controlled to narrow or enter the work range. To easily and quickly perform cutting work in restricted places. [Structure] A hanging portion 11a that can be mounted on the tip of an arm of a construction machine, a connecting frame 1 including a rotatable swivel portion 13, a support frame 2 attached to the swivel portion 13, and one end support by a support frame 2. And a cutting surface pressing device 4 including a pressing portion 41 having a semi-circular ski function that is vertically movable and that is disposed on the side of the cutter rotor 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cutting asphalt, concrete, etc., which is mounted on a construction machine, etc., and has a narrow work area such as a road, bridge, parking lot, etc. Easy cutting work in place,
In addition, it is a mini-cutter that can be quickly implemented.In addition, with the revision of the Road Traffic Law, in the bridge section pressure-intensifying method of bridge reinforcement work, complete removal of surface asphalt and complete removal of surface asphalt at joints, etc. The present invention relates to a construction method using the mini cutter.

[0002]

2. Description of the Related Art Recently, due to an increase in traffic volume and deregulation of vehicle weight, existing roads are severely damaged. Therefore, repair work is increasing, and the spread of city gas in general cities,
Due to the maintenance of sewers, the repair work of gas pipes, water pipes, telephone lines, etc. buried under the road is rapidly increasing. Conventionally, as a road cutting device for these repair works, a construction machine such as a road stabilizer or a road cutter and a road machine are generally used.
Further, in order to cut the road along the correct route, Japanese Patent Application Laid-Open No. 60-
As disclosed in Japanese Patent No. 26731, there has been proposed one in which a cutting device is fixed between axles on the underside of a vehicle body of a construction machine, or movably provided between the axles, and a detector for a cut portion of a road is attached to the vehicle body. ing. In addition, in order to enable the discharge work of road debris to be carried out at the same time, the actual construction of Sho 60-1
As shown in Japanese Patent No. 30860, there is also proposed a construction machine provided with a cutter rotor and a discharge bucket at a tip end thereof so as to be reciprocally movable.

[0003]

Conventionally, as a road cutting device, a construction machine such as a road stabilizer or a road cutter has been generally used as described above, but these cutting devices are used. Is one side of the cutter rotor,
Or, the drive device of the cutter rotor is projected on both sides,
Since only one side of the device can be cut and the related road machine and construction machine are reversed and reverse in every stroke, there is a problem that long-term road traffic regulation is required. In addition, if the cutting device is attached to the underside of the vehicle body, it is necessary to rotate around the obstacle when working such as manholes and bridges that are orthogonal to the cutting direction. It requires a working radius and is difficult to use in narrow places or indoors, and on roads with obstacles,
Problems such as long-term traffic regulation are occurring.

Further, there is a construction machine provided with a cutter rotor and a discharge bucket at the tip of an arm or the like, but since the cutter rotor cannot be fixed to the cutting surface, the cutting surface bounces due to the reaction force generated in the cutting rotor. Since the precision is poor and the middle part of the cutter rotor is held and driven, various problems occur such that the middle part of the cutter rotor cannot be cut and cannot be used for road surface cutting. . Therefore, the present invention has been made in order to eliminate the above-mentioned conventional drawbacks, in which a rotatable frame is provided in a connecting frame that can be mounted on the tip of an arm of a construction machine, and the frame is connected to the frame. The support frame supports the rotatable cutter rotor to allow the cutter rotor to swivel, and a cutting surface pressing device that is vertically movable on the side of the cutter rotor is provided to adjust the cutting depth. By making it possible, it is an object to perform the cutting work easily and quickly even in a narrow space or in a place where the work range is restricted due to entering.

[0005]

In view of the above, the present invention is firstly directed to a connecting frame which is mountable on the tip of an arm of a construction machine and has a rotatable swivel portion, and a support connected to the swivel portion. A frame, a cutter rotor supported by the support frame, having a cutting claw planted on the surface thereof and rotatably provided;
The mini cutter comprises a cutting surface pressing device which is vertically movable on the side of the cutter rotor. Secondly,
This is because the swivel unit is a mini cutter in which the support frame is swivelable by the swivel table. Thirdly, the cutter rotor is a mini-cutter in which a rotary drive device for the cutter rotor is arranged in parallel with the cutter rotor. Fourthly, the cutter rotor is a mini-cutter in which a rotation driving device for the cutter rotor is incorporated. Fifth, the cutter rotor has a flat end on one side, and is a mini cutter that enables cutting work to the outermost side of the work. Furthermore, sixthly, the mini cutter is attached to the construction machine and is installed at a construction site such as a bridge to perform a cleaning work for cutting the concrete surface and a rough finishing work for the concrete surface. It is intended to achieve the above object by adopting a construction method using a mini cutter.

[0006]

According to the present invention having the above-described structure, a rotatable frame is provided on a connecting frame which can be mounted on the tip of an arm of a construction machine, and a cutter frame rotatable by a support frame connected to the rotatable part. Support the cutter,
Since the cutter can be swung freely and a cutting surface pressing device that can move up and down on the side of the cutter rotor is provided, it can be attached to the tip of the arm of the construction machine, etc. Can be cut anywhere and the cutter rotor can be swiveled, so any cutting direction can be obtained and a cutting surface pressing device that can move up and down is provided on the side of the cutter rotor. Therefore, it is possible to prevent the deflection due to the reaction force to the cutter rotor during cutting, and to adjust the cutting depth by the level difference between the cutting surface pressing device and the cutter rotor.

Further, since the swivel unit is a mini cutter in which the support frame is swivelable by a swivel table, an arbitrary cutting direction can be more surely given to the mini cutter. Further, the cutter rotor is a mini-cutter in which the rotary drive device of the cutter rotor is arranged in parallel with the cutter rotor, so that the rotary drive device is a cutter rotor.
Since it is outside the cutter, the mini cutter can be easily assembled, and since the rotary drive device is installed in parallel with the cutter rotor, it is possible to cut the obstacle to the full side surface. Further, the cutter rotor is a mini cutter having a rotary drive device for the cutter rotor built therein, so that the mini cutter is further miniaturized, and the work range is restricted due to narrowing or entering. It can be easily used even in open places. In addition, the mini cutter with the above-mentioned structure is used in the bridge part pressure intensification method of bridge reinforcement work, and it is troublesome to remove the surface asphalt completely and the surface layer asphalt at the joint part by using a breaker. However, the work becomes easier, the concrete pressure increasing method is easier, and the strength of the bridge is improved.
It can be cut to the level of the beam, and the urethane mat can be laid securely for waterproofing and soundproofing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings in order to further clarify the gist of the mini-cutter of the present invention and the construction method therefor. A first embodiment will be described with reference to FIGS. 1 to 4 and 6. M1 is a mini cutter according to the present invention. Reference numeral 1 denotes a connecting frame, which is a hanging portion 11a that can be attached to the tip of a swingable arm A of a construction machine, and a hanging portion 1 that can be tilted by a cylinder C.
1b, a swivel unit 13 which is a swivel table rotatable by a rotary motor 12. A supporting frame 2 connected to the revolving part 13, and a cylindrical cutter rotor 3 having one end supported by the supporting frame 2 and having cutting claws 31 planted on the surface at an arbitrary pitch to be rotatable. , The cutter rotor 3
And a pressing portion 41 which is vertically movable and has a semi-circular grounding portion having a ski function, and the pressing portion 41.
And a cutting surface pressing device 4 including a sliding portion 42 having a U-shaped cross section which is slidably formed by being fitted to the support frame 2.

The cutting surface pressing device 4 is vertically movable by a cylinder 43 provided on a side portion of the support frame 2. Further, inside the upper part of the support frame 2, there is housed a rotary drive device 5 including a hydraulic motor for rotationally driving the cutter roller 3, and the rotary drive device 5 and the cutter rotor 3 are housed. And the supporting frame 2
A sprocket 51, which is supported by a support plate 21 whose both ends are fixed to each other, and which is meshed with the rotary shaft of the rotary drive device 5, and a sprocket 32 which is meshed with the rotary shaft of the cutter rotor 3.
And are connected by a chain 52.

Next, the operation of this embodiment will be described.
First, the hanging parts 11a and 11b of the connecting frame 1 are attached to the tip of the swingable arm A of the construction machine and the air cylinder C, and the cutter rotor 3 is rotated by the rotary drive device 5, so that the cutter rotor 3 is cut. The claw 31 can be brought into contact with a cutting surface such as a road to be cut, and the pressing portion 41 of the cutting surface pressing device 4 is moved up and down by the hydraulic cylinder 43 to come into contact with the road surface, thereby pressing the pressing portion 41 and the cutter rotor 3. By adjusting the level difference d1 from the lower end of the to a desired cutting depth, it is possible to secure a certain cutting accuracy.

Since the pressing portion 41 has a semi-circular ground surface, even if the cylinder C is operated according to the inclination of the cutting surface to tilt the mini cutter M1 back and forth, the cutting depth changes significantly. Can be suppressed. Further, in order to cut the road surface around the manhole H, etc., the arm A of the construction machine K is swung to bring the mini cutter M1 close to the side surface of the manhole, and then the swivel unit 13 is moved by the hydraulic motor 12.
By rotating the mini cutter M1 around the manhole while rotating the cutter rotor 3 through the support frame 2, an arbitrary cutting direction can be secured, and the manhole can be easily and quickly cut to the full side surface. You can

Next, a second embodiment will be described with reference to FIGS. First, regarding the structure of the mini-cutter M2 of this embodiment, the cylindrical cutter rotor 3a has cutting claws 31a planted on the surface at an arbitrary pitch, and is disposed inside the cutter rotor 3a. And the support frame 2a
The rotary drive unit 5a fixed to the rotary drive unit 5a is rotatable via a torque hub 33 directly connected to the rotary shaft of the rotary drive unit 5a.
Has one end supported by the support frame 2a.

Further, similar to the first embodiment, the mini-cutter M2 has a connecting frame which can be attached to the tip of the arm A of the construction machine K, and a rotating unit which is a rotating table which is rotated by a hydraulic motor provided in the connecting frame. Etc., the cutter rotor 3a is rotatable through the rotating portion and the support frame 2a. Further, a pressing portion 41a having a ski function of the vertically movable cutting surface pressing device 4a is disposed on the side of the cutter rotor 3a, and the pressing portion 41a is fitted on the upper portion of the pressing portion 41a. A sliding portion 42a that is slidably formed is connected thereto.

Next, regarding the operation of this embodiment, as in the first embodiment, the mini cutter M2 is mounted on the swingable arm A of the construction machine K, and the rotary drive device 5a is driven to drive the cutter rotor 3a. When the tool is rotated, a cutting surface 31a can be cut by the cutting claw 31a, and the pressing portion 41a is moved up and down by the cylinder 43 of the cutting surface pressing device 4a to move the lower surface of the cutter rotor 3a and the pressing portion 41a. By adjusting the level difference d2 to a desired cutting depth, a certain cutting accuracy can be secured.

Further, as in the first embodiment, in order to cut around the manhole H or the like on the road, the mini cutter M2 is brought close to the side surface of the manhole H, and the turning portion and the support are provided around the manhole H. By rotating the cutter rotor 3a via the frame 2a and arbitrarily changing the cutting direction of the cutter rotor 3a, the outer peripheral surface of the manhole H can be cut easily and quickly. Further, the mini cutter M2 of this embodiment is the mini cutter M1 of the first embodiment.
Compared with the above, since the rotary drive device 5a is housed inside the cutter rotor 3a and is small in size, it can be easily used even in a place where the working range is further restricted.

Further, when the bridge is reinforced by the mini cutters M1 and M2, in the bridge portion pressure-intensifying method, cutting can be performed up to the beam and the side surface can be approached as much as possible.
Since turning is possible, it is possible to easily perform the complete removal of the surface asphalt and the complete removal of the surface asphalt at the joint portion.

In the above embodiment, the pressing portion of the cutting surface pressing device has a semi-circular shape having a ski function, but the semi-circular shoe or wheel can be arbitrarily pressed to the ground or the like. Good, etc., the number, shape, size, material, operating method, etc. of each constituent element of the mini cutter according to the present invention are arbitrarily determined within the range in which the above-mentioned objects, actions and effects of the invention described below are achieved. It goes without saying that any of these changes does not change the gist of the present invention.

[0018]

As described in detail above, the present invention provides
A turning frame composed of a turning table and the like is provided on a connecting frame which can be attached to the tip of an arm of a construction machine, and a cutter frame which is turnable by a support frame connected to the turning section.
The cutter rotor so that the cutter rotor can swing freely, and
By using a mini-cutter in which a vertically movable cutting surface pressing device is arranged on the side of the cutter rotor, the cutter rotor can be swiveled, and it is possible to cut up to the side surface of an obstacle such as a manhole and the cutting surface. There is an effect that the pressing depth can be adjusted by the pressing device to secure a certain cutting accuracy. Further, the cutter rotor is a mini cutter formed by arranging the rotary drive device of the cutter rotor in parallel with the cutter rotor, thereby facilitating the handling of the mini cutter and making maintenance suitable for the parts, The operation is extremely easy. Further, since the cutter rotor is a mini cutter having a rotary drive device for the cutter rotor built in the cutter rotor, the mini cutter can be further miniaturized. It has an effect that it can be easily used even in the place where it is used.

Further, the mini-cutter of the present invention is mounted on a construction machine and disposed on a construction site such as a bridge to perform cleaning work for cutting the concrete surface and rough finish work for the concrete surface. It was very easy to do, and therefore the strength of the bridge was improved, and various works for waterproofing and soundproofing were also extremely easy. As described above, the present invention is a practical and excellent invention that has a unique effect that has never been obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a side view showing the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a vertical sectional view showing a main part of a second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing the operation of the first and second embodiments of the present invention.

[Explanation of symbols]

 1 Connection frame 13 Revolving part 2, 2a Support frame 3, 3a Cutter rotor 31, 31a Cutting claw 4, 4a Cutting surface pressing device 5, 5a Rotation drive device A1, A2 Arm K1, K2 Construction machine M1, M2 Mini cutter

Claims (6)

[Claims] 1. A connection frame which can be attached to an arm tip of a construction machine and has a rotatable swivel portion, a support frame connected to the swivel portion, and a support frame which is supported by the support frame and cuts on the surface. A mini cutter comprising a cutter rotor provided with pawls and rotatably provided, and a cutting surface pressing device which is provided at a side of the cutter rotor so as to be vertically movable. 2. The mini cutter according to claim 1, wherein the revolving unit is configured to revolve the support frame by a revolving table. 3. The mini cutter according to claim 1, wherein the cutter rotor has a rotary driving device for the cutter rotor arranged in parallel with the cutter rotor. 4. The mini cutter according to claim 1, wherein the cutter rotor has a rotation driving device for the cutter rotor built in the cutter rotor. 5. The mini cutter according to claim 1, wherein the cutter rotor has a flat end on one side to enable cutting work up to the outermost side of the work. 6. A cleaning operation for mounting the mini cutter according to claim 1 to a construction machine, arranging it at a construction site such as a bridge, and cutting the concrete surface, and roughing the concrete surface. Construction method using a mini cutter characterized by performing finishing work