Cutting machine and cutting method

Abstract

The present invention provides a cutting machine and cutting method that can efficiently and effectively cut existing structures even in narrow spaces where the existing structures are not flat. [Solution] A cutting machine 1 capable of cutting concrete comprises a frame 22 equipped with running wheels 21, a cutting unit 10 equipped with a plurality of cutting blades 12, and a slide support portion 23 provided on the frame 22 and supporting the cutting unit 10, wherein the slide support portion 23 is provided on the frame 22 in a transverse direction with respect to the cutting direction, and the cutting unit 10 can be fixed to any position on the slide support portion 23 via a slide member 15 provided on the cutting unit 10.

Description

Technical Field

[0001] The present invention relates to a cutting machine capable of cutting existing concrete or the like, and a cutting method using the cutting machine.

Background Art

[0002] Conventionally, when removing existing concrete paving, concrete slabs, etc., a process of cutting with a concrete cutter or the like in the removal range in advance has been provided.

[0003] For example, Patent Document 1 discloses a configuration in which a concrete cutter equipped with an internal combustion engine and wheels has a plurality of cutting blades provided on a single rotating shaft, and an invention in which grooves for floor suspension at regular intervals are formed by the concrete cutter is disclosed.

[0004] Further, Patent Document 2 discloses a configuration in which a concrete slab disassembling device has two blades and the angle in the cutting direction of these blades can be changed, and an invention enabling inclined cutting of a concrete slab is disclosed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, with cutting machines such as the concrete cutters disclosed in the above patent documents, it is difficult to perform cutting that can easily remove existing structures in a narrow space where it is difficult to perform cutting while changing the running position of the cutting machine.

[0007] Therefore, in view of the above-mentioned problems, the present invention aims to provide a cutting machine and a cutting method that can efficiently and effectively cut existing structures even in narrow spaces where the existing structures are not flat. [Means for solving the problem]

[0008] The invention relating to (1) is a cutting machine capable of cutting concrete, comprising: a frame body equipped with running wheels; a cutting unit equipped with a plurality of cutting blades; and a slide support portion provided on the frame body and supporting the cutting unit, wherein the slide support portion is provided on the frame body extending in a transverse direction with respect to the cutting direction, and the cutting unit can be fixed to any position on the slide support portion via a slide member provided on the cutting unit.

[0009] The invention relating to (2) is a cutting machine according to (1) above, characterized in that the frame is provided with a plurality of slide support parts, and one or more cutting units are supported by one of the slide support parts.

[0010] The invention relating to (3) is a cutting machine according to (1) or (2) above, characterized in that the cutting unit has a height adjustment cylinder for raising and lowering the plurality of cutting blades and a rotary drive motor for rotating the plurality of cutting blades.

[0011] The invention relating to (4) is the cutting machine described in (3) above, characterized in that the frame is equipped with a drive motor for rotating the wheels.

[0012] The invention relating to (5) is a cutting machine according to (1) or (2) above, characterized in that the traveling wheels are capable of traveling along a traveling guide means provided separately from the cutting machine.

[0013] (6) The cutting machine is the cutting machine described in (5) above, characterized in that it is capable of traveling on the invert concrete inside the water conduit tunnel.

[0014] (7) A cutting method using a cutting machine having a frame with running wheels, a cutting unit with a plurality of cutting blades, and a slide support portion provided on the frame and extending in a transverse direction with respect to the cutting direction to support the cutting unit, the method comprising: a cutting step of dividing an object to be cut into predetermined intervals with the plurality of cutting blades and cutting it; a subdivision step of removing some of the plurality of cutting blocks of the object to be cut that were divided and cut in the cutting step, and placing a jack at the location where the cut was removed to further subdivision the plurality of cutting blocks; and a removal step of removing the plurality of cutting blocks that were subdivision in the subdivision step.

[0015] (8) The cutting machine described in (7) above is characterized in that the object to be cut is invert concrete in a water conduit tunnel. [Effects of the Invention]

[0016] According to the present invention, it is possible to efficiently remove various existing structures, and in particular, even when the existing structure to be cut is located in a confined space, it is possible to efficiently and effectively cut and remove the existing structure. [Brief explanation of the drawing]

[0017] [Figure 1] This is a perspective view of a cutting machine in one embodiment of the present invention. [Figure 2] This is a front view of a cutting machine in one embodiment of the present invention. [Figure 3] This is a side view of a cutting machine in one embodiment of the present invention. [Figure 4] This is a plan view of a cutting machine in one embodiment of the present invention. [Figure 5] This is a perspective view of a cutting unit in one embodiment of the present invention. [Figure 6] In one embodiment of the present invention, it is a side view and a front view for explaining the lifting and lowering mode of a cutting blade in a cutting unit. [Figure 7] In one embodiment of the present invention, it is a side view for explaining the adjustment mode of the cutting depth. [Figure 8] In one embodiment of the present invention, it is a perspective view for explaining the lateral movement mode of the cutting unit. [Figure 9] In one embodiment of the present invention, it is a front view showing the arrangement mode of a cutting machine in a water conduction tunnel. [Figure 10] In one embodiment of the present invention, it is a drawing for explaining a method of removing invert concrete of a water conduction tunnel. [Figure 11] In one embodiment of the present invention, it is a flowchart for explaining a cutting method by a cutting machine. Among the above-mentioned figures, for FIGS. 1 and 5 to 9, in order to make the component configuration easy to understand, some configurations such as the transmission means 17 are not shown.

Mode for Carrying Out the Invention

[0018] Hereinafter, while referring to the drawings, one embodiment of a cutting machine and a cutting method of the present invention will be described. Note that the following description is only about one embodiment, and the present invention is not limited to the following description.

[0019] In FIGS. 1 to 4, a perspective view, a front view, a side view, and a plan view of the cutting machine of the present embodiment are shown respectively. As shown in the drawings, the cutting machine 1 of the present embodiment is a cutting machine 1 capable of cutting concrete, and includes a frame body 22 provided with traveling wheels 21, a cutting unit 10 provided with a plurality of cutting blades 12, and a slide support portion 23 provided on the frame body 22 and supporting the cutting unit 10. The slide support portion 23 extends in a transverse direction with respect to the cutting direction and is provided on the frame body 22, and the cutting unit could be fixed at any position of the slide support portion 23 through a slide member 15 provided on the cutting unit 10.

[0020] The cutting unit 10 of this embodiment, as shown in the perspective view of Figure 5, comprises a plurality of cutting blades 12 (four in the illustrated example), which are rotatably supported by a blade support arm 14. Furthermore, a rotary drive motor 11 is provided as a drive source for the cutting blades 12. The rotation axis (pulley 111) of the rotary drive motor 11 and the rotation axes of the plurality of cutting blades 12 are connected by a transmission means 17, as shown in Figures 2 and 3, etc.

[0021] In this embodiment, the rotary drive motor 11 is an electric motor, which prevents the emission of exhaust gases and significantly suppresses the generation of vibration and noise. This enables safe and efficient cutting in confined spaces or in nearly confined areas. However, the present invention does not necessarily negate the possibility of using an engine drive instead of the rotary drive motor 11.

[0022] Furthermore, the transmission means 17 is not particularly limited to belt type or chain type, and any known means for transmitting driving force can be applied as appropriate.

[0023] The blade support arm 14 is composed of a link mechanism as shown in Figure 5, and is capable of adjusting the height of multiple cutting blades 12 in accordance with the extension and retraction movement of the height adjustment cylinder 13.

[0024] More specifically, as shown in the side and front views of Figure 6, the height of the cutting blade 12 relative to the cutting surface can be lowered by shortening the rod of the height adjustment cylinder 13. Conversely, the height of the cutting blade 12 relative to the cutting surface can be raised by extending the rod of the height adjustment cylinder 13.

[0025] In this embodiment, a hydraulic cylinder is used as the height adjustment cylinder 13, but it is not necessarily limited to this, and various known cylinders such as electric cylinders and air cylinders can be applied.

[0026] Furthermore, as shown in Figure 7, the blade support arm 14 of this embodiment is provided with a maximum depth adjustment means 16. This is a component that sets the maximum cutting depth for the workpiece and regulates the height position of the cutting blade 12. The component configuration of the maximum depth adjustment means 16 is not particularly limited, and any component that regulates the range of motion of the blade support arm 14 can be installed as appropriate.

[0027] Furthermore, the cutting unit 10 is provided with a roughly U-shaped sliding member 15, as shown in Figures 4 and 5, and by engaging the sliding member 15 with the sliding support portion 23 of the frame 22, the cutting unit 10 can be fixed at any position on the sliding support portion 23.

[0028] More specifically, as shown in Figure 8, the slide member 15 can be fixed at any position on the slide support 23 for cutting, and then, when the cutting unit 10 is moved laterally to perform cutting at a different position, the slide member 15 can be moved and fixed for cutting. This makes it possible to cut multiple objects in parallel at predetermined intervals.

[0029] Furthermore, in order to prevent the slide member 15 from moving during cutting, it is desirable to fix it to the slide support 23 with a slide fixing member 151. In addition, the slide fixing member 151 can be any known member such as a bolt as appropriate.

[0030] Furthermore, as can be seen in Figure 9, the shape of the slide support portion 23 in this embodiment is curved to match the shape of the cutting surface of the invert concrete 81, which is the object to be cut. As a result, no matter what position the cutting unit 10 is fixed in, the cutting blade 12 can cut the invert concrete 81 at approximately perpendicular to the cutting surface.

[0031] It should be noted that the present invention is not necessarily limited to a curved slide support portion 23. That is, the slide support portion 23 may be configured as a straight shape, and it is also possible to change it as appropriate according to the shape of the workpiece to be cut.

[0032] As another method, even if the slide support portion 23 is configured to be a straight shape, if the slide member 15 of the cutting unit 10 is configured to be able to be changed to any angle, it is possible to adjust the angle of the cutting blade 12 with respect to the workpiece to any desired angle.

[0033] Next, the cutting machine 1 of this embodiment is equipped with a travel drive motor 31 that rotates the travel wheels 21 on the frame 22. This allows the cutting machine 1 to move on its own, enabling it to cut the workpiece while moving under its own power. For example, as shown in Figures 3 and 4, a travel unit 30 can be mounted on the frame 22, and the driving force can be transmitted to the travel drive motor 31 to rotate the travel wheels 21.

[0034] For example, the above-mentioned travel unit 30 can be replaced with a hydraulic unit, which would allow the above-mentioned travel drive motor 31 to be replaced with a hydraulic motor, and furthermore, the aforementioned height adjustment cylinder 13 to be operated as a hydraulic cylinder. Of course, it is also possible to replace these with electric motors.

[0035] Furthermore, the cutting machine 1 of this embodiment is equipped with a control unit 40, as shown in Figure 4. This control unit is electrically connected to the rotary drive motor 11 and the travel unit 30, and can control the height adjustment cylinder 13, travel drive motor 31, rotary drive motor 11, etc. of the cutting machine 1 to set the travel speed (cutting speed) and control the pressure of the height adjustment cylinder 13.

[0036] Next, the cutting method using the cutting machine 1 of this embodiment will be described. Figure 9 shows the arrangement of the cutting machine 1 within the water conduit tunnel 80. The illustrated example involves cutting and removing the existing invert concrete 81 of the water conduit tunnel 80 using the cutting machine 1. Figure 11 shows the construction flow of the cutting method in this embodiment. The following explanation will follow the construction flow.

[0037] First, depending on the construction conditions, the necessity of installing a travel guide means is considered, and if necessary, the travel guide means is installed so that the wheels of the cutting machine 1 travel in a predetermined cutting direction (S100). Examples of travel guide means include track rails.

[0038] However, the above-mentioned travel guide means is not necessarily limited to track rails; various types of shaped steel, such as channel-shaped or V-shaped steel, can be used as travel guide means as long as they can allow the cutting machine 1 to move in a predetermined direction without human steering.

[0039] Next, a cutting process (S110) is performed in which the workpiece to be cut is divided into predetermined intervals and cut using multiple cutting blades 12 of the cutting machine 1. In the example of the invert concrete 81 shown, the cutting unit 10 of the cutting machine 1 is slid and traveled over the invert concrete 81 multiple times. By cutting in this divided manner, the invert concrete 81 can be cut into multiple cutting blocks 811, as shown in Figure 10.

[0040] Next, some of the cutting blocks 811 that were divided and cut in the above cutting process (in the illustrated example, the cutting blocks 811 near the center) are removed. Then, a jack is placed in the place where the blocks were removed, and a subdivision process (S120) is performed to further subdivide the multiple cutting blocks 811.

[0041] To explain in more detail, as shown in Figure 10, after removing some of the cutting blocks 811, a jack is installed in that location. Then, by operating the jack, multiple cutting blocks 811 adjacent to each other on the left and right are pressed together, making it possible to cut the edges of the cutting blocks 811 on their undersides. Furthermore, a cutting wedge or the like is inserted into the cutting groove and chipped away to break up the invert concrete 81 into smaller pieces.

[0042] The multiple cutting blocks 811 that have been cut into smaller pieces by the aforementioned cutting process are removed in the removal process (S130), and the concrete rubble from the removed cutting blocks 811 is transported out of the construction site in the transport process (S140).

[0043] When carrying out renovation work on the water conduit tunnel 80, following the aforementioned removal process (S140), high-pressure cleaning of the entire inside of the water conduit tunnel 80 (S200) is performed, and in the renovation work, FRP grids are further installed on the walls (S300).

[0044] Then, the concrete material delivery equipment is installed, invert concrete 81 is poured (S400), and finally, mortar is sprayed onto the aforementioned FRP grid (S500).

[0045] (Another embodiment) Although one embodiment of the present invention and its variations have been described above, the present invention is not necessarily limited to the embodiments described above.

[0046] For example, in the embodiment described above, two slide support parts 23 are provided as shown in Figure 1, etc., but it is not necessarily limited to this, and it is also possible to provide one or three or more slide support parts 23.

[0047] Furthermore, in the embodiment described above, as shown in Figure 1, one cutting unit 10 is arranged on one slide support 23, but this is not necessarily the only option, and it is also possible to arrange two or more cutting units 10 on one slide support 23.

[0048] Furthermore, in the embodiment described above, as shown in Figure 1, etc., one cutting unit 10 Although the cutting unit 10 is configured to have a sliding member 15, it is not necessarily limited to this configuration. The cutting unit 10 may be provided with two or more sliding members 15, which will allow the cutting unit 10 to be held more stably.

[0049] Furthermore, it is possible to provide a water supply mechanism to the cutting machine 1. That is, a water supply pipe can be installed to supply water to the cutting blade 12, allowing cutting to be performed while water is being applied to the cutting blade 12. This effectively suppresses thermal deformation of the cutting blade 12 caused by the heat generated during cutting, as well as suppressing the generation of noise, dust, and vibration. Of course, it is also possible to use a cutting blade 12 with excellent heat resistance and perform cutting by dry cutting.

[0050] The scope of the present invention is defined by the claims rather than by the descriptions of the embodiments described above, and further includes all modifications within the meaning and scope of equivalence to the claims. In addition, the specific materials, dimensions, shapes, etc., described in the embodiments described above can be modified to the extent that they solve the problem of the present invention. [Explanation of Symbols]

[0051] 1 cutting machine 10 cutting units 11 Rotary drive motor 111 Pulley 12 cutting blades 13 Height adjustment cylinder 14 Blade support arm 15. Sliding member 151 Slide fixing member 16 Maximum depth adjustment means 17 Transmission means 20 carts 21 Running wheels 22 Frame 23 Slide support section 24 protective cover 30 Running Units 31. Drive motor 40 Control Unit 80 Water conduit tunnel 81 Invert Concrete 811 Cutting Block

Claims

1. A cutting machine capable of cutting concrete, A frame equipped with running wheels, A cutting unit equipped with multiple cutting blades, The frame is provided with a slide support portion that supports the cutting unit, The slide support portion is provided on the frame body and extends in a transverse direction with respect to the cutting direction. The cutting unit can be fixed to any position on the slide support portion via a slide member provided on the cutting unit. A cutting machine characterized by the following features.

2. The frame is provided with a plurality of slide support parts. One or more cutting units are supported by one of the slide support portions. The cutting machine according to feature 1.

3. The aforementioned cutting unit is A height adjustment cylinder for raising and lowering the plurality of cutting blades, It includes a rotary drive motor for rotating the plurality of cutting blades. The cutting machine according to feature 1 or 2.

4. The frame is equipped with a drive motor that rotates the wheels. The cutting machine according to feature 3.

5. The aforementioned wheels are capable of traveling along a travel guide means provided separately from the cutting machine. The cutting machine according to feature 1 or 2.

6. The cutting machine is capable of traveling on the invert concrete inside the water conduit tunnel. The cutting machine according to feature 5.

7. A cutting method using a cutting machine having a frame with running wheels, a cutting unit with a plurality of cutting blades, and a slide support portion provided on the frame and extending in a transverse direction with respect to the cutting direction to support the cutting unit, A cutting process in which the workpiece to be cut is divided into predetermined intervals and cut by the plurality of cutting blades, A subdivision step is performed in which, of the multiple cutting blocks of the object to be cut that have been divided and cut in the cutting step, some of the cutting blocks are removed, a jack is placed in the place where the blocks were removed, and the multiple cutting blocks are further subdivided. The process includes a removal step of removing the plurality of cutting blocks that have been divided into smaller pieces by the aforementioned division step. A cutting method using a cutting machine characterized by the following features.

8. The object to be cut is the invert concrete inside the water conduit tunnel. A cutting method using a cutting machine as described in feature 7.

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