Supplying method of power to cutting machine

Abstract

To supply power to a cutting machine without emitting exhaust gas and significantly reducing noise.SOLUTION: A method uses a power supply unit U1 and a controller unit U2, and before construction, the power supply unit U1 and the controller unit U2 are connected by a power cable C1, and a power generator P is connected to the controller unit U2 by a charging cable C2 to charge the power supply unit U1. During construction, the power supply unit U1 and the controller unit U2 are connected by the power cable C1, and the cutting machine M is connected to the controller unit U2 by a power supply cable C3, and power is supplied from the power supply unit U1 to the cutting machine M.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a method for supplying power to various cutting machines used for cutting various construction objects including concrete structures.

Background Art

[0002] In repair work and renovation work of concrete structures, various cutting operations are performed using various cutting machines, such as drilling a concrete structure with a core drill (drilling machine), cutting a concrete structure with a wall saw, cutting a concrete structure with a wire saw, polishing a concrete structure with a grinder, and cutting a concrete structure with a concrete cutter (road cutter).

[0003] In the construction using a core drill, as disclosed in Patent Document 1, a core bit using diamond chips at the tip blade is attached to the rotation axis of the core drill, and the core bit is rotated by driving the prime mover of the core drill, and the tip blade of the core bit is pressed against and rotated on the drilling surface of the concrete structure to drill.

[0004] In the construction using a wall saw, as disclosed in Patent Document 2, anchor holes for fixing guide rails are drilled along the cutting planned line of the wall surface, the guide rails are fixed to the wall surface with anchors, and a support frame equipped with a blade rotation driving device is mounted on the guide rails, a blade is attached to the blade rotation driving device, and a blade cover is put on the blade. In this way, the blade is rotated, and the blade is moved on the guide rails via the support frame, and the wall surface is cut with this rotating blade.

[0005] The construction using a wire saw takes a method of rotating the wire saw at high speed, bringing it into contact with the object to be cut, and cutting it. Depending on the way of applying tension to the object to be cut by the wire saw, it is roughly classified into a pull-cutting method and a push-cutting method. In the cutting-off method, as disclosed in Patent Document 3, a wire is wound endlessly along the periphery (cutting position) of the object to be cut through a pair of guide pulleys and a driving pulley of a driving device so as to be in linear contact. The wire is rotated at high speed by the driving device, and while the driving device moves (in the direction of pulling away from the object to be cut), an appropriate tension required for cutting is maintained as the cutting progresses on the object to be cut (eliminating the slack generated in the wire), and the concrete, steel bars, etc. of the object to be cut are cut off by pulling. In the pressing-through cutting method, as disclosed in Patent Document 4, a wire is wound endlessly between a pair of guide pulleys and a driving pulley of a driving device toward the (cutting position of the) object to be cut. The wire is rotated at high speed by the driving device, and the wire running between the pair of guide pulleys is brought into linear contact with the front side of the object to be cut and pressed, and the concrete, steel bars, etc. of the object to be cut are pressed through and cut.

[0006] In the construction by a grinding machine, as disclosed in Patent Document 5, a grinding device is mounted on a main body having wheels for the grinding machine to travel on the construction surface and a hand-operated operation handle, and the grinding device is rotationally driven by a prime mover. The grinding device is rotated and moved on a construction surface such as a concrete floor surface by the rotating grinding device to grind the construction surface.

[0007] In the construction by a concrete cutter (road cutter), as disclosed in Patent Documents 6 and 7, a concrete cutter has a prime mover and a cutter blade provided on a main body having wheels for movement. The prime mover of the main body is driven to rotate the cutter blade, and the cutter blade is rotated and moved on a road surface such as a concrete pavement or an asphalt pavement, and the construction surface is cut by the rotating cutter blade.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

[0009] Conventionally, in this type of cutting machine, a drive system using an electric motor or a hydraulic motor has been adopted, and an engine-type generator has been used as its power source. As is well known, since an engine-type generator is an engine using light oil or gasoline, exhaust gas is generated and the noise is also large. If the construction site is a commercial area or a residential area, or is in its vicinity, it will have an adverse impact on the living environment and is also not favorable for the working environment of the workers at the construction site. Furthermore, it will also go against the recent trend of CO2 reduction. On the other hand, at construction sites where the use of oil (hydraulic equipment and engine-type generators) is restricted, such as airports and factories where fire is strictly prohibited, an electric motor or a hydraulic motor has to be used. In this case, it is difficult to ensure a sufficient power supply. Furthermore, when using various cutting machines at an indoor site without power, since there is a possibility of oxygen deficiency with an engine-type generator, the generator needs to be installed outdoors. For this reason, a cable has to be extended from the outdoor generator to the construction site, and it has to be a large-scale temporary facility.

[0010] Therefore, the present invention aims to provide a method for supplying power to this type of cutting machine, which generates no exhaust gas and significantly reduces noise generation, so that even if the construction site is in or near a commercial area or a residential area, it will have no adverse impact on the environment, provides a good working environment that is harmless to the health of workers at the construction site, conforms to the recent trend of CO2 reduction, ensures sufficient power when using an electric motor or a hydraulic motor at a construction site where the use of oil (hydraulic equipment and engine-driven generators) is restricted, and has no restrictions on the installation position of the power supply, does not require long cable extension, and enables simple equipment even when using various cutting machines at an indoor site without power.

Means for Solving the Problems

[0011] To achieve the above object, the present invention A method for supplying power to various cutting machines including a core drill, a wall saw, a wire saw, a grinder, and a concrete cutter, which are provided with a cutting part and an electric drive prime mover integrally attached to the cutting part for operating the cutting part, and which cut various construction objects including concrete structures with the cutting part, comprising: A power unit that houses a storage battery including a lithium-ion battery in an outer case for power supply, and has a power supply side connector on the case surface of the outer case for power supply, which is connected to the storage battery and conductively connects the storage battery and the power supply circuit of the controller unit described below; A controller unit that houses a power supply circuit connected to the power unit and a control circuit connected to the power supply circuit for controlling the power supply circuit in an outer case for the controller, and has a controller side connector for connecting the power supply cable, a charging connector for connecting a charging cable connected to the power supply circuit and charging the storage battery, and a power supply connector for connecting a power supply cable for supplying power to the various cutting machines on the case surface of the outer case for the controller, and is equipped with an operation unit for performing various operations including charging and discharging of the storage battery and power supply from the storage battery to the various cutting machines, which is connected to the control circuit; Used in pairs with Before the construction of each construction object by each of the various cutting machines, connect the power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power cable, and connect a power generation device to the charging connector of the controller unit with the charging cable, and charge the storage battery of the power supply unit by operating the operation unit of the controller unit. During the construction of each construction object by each of the various cutting machines, connect the power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power cable, connect each of the various cutting machines to the power supply connector of the controller unit with the power supply cable, and supply power from the storage battery of the power supply unit to each of the various cutting machines by operating the operation unit of the controller unit. This is the gist.

[0012] Also, this method is embodied as follows. (1) Adopt an electric motor, a hydraulic motor, and a water pressure motor for the prime movers of various cutting machines. (2) Adopt a reused battery used in an electric vehicle for the lithium-ion battery. (3) Prepare a plurality of power supply units. Each time the capacity of the previous power supply unit runs out or decreases to a certain level or below during the construction of each construction object, connect the next power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power cable, and continuously supply power from the next power supply unit to various cutting machines under the control of the controller unit. (4) The power generation device includes a solar power generation device, and the solar power generation device and the controller unit are connected by connecting the solar power generation device to the charging connector of the controller unit with a charging cable, and the controller unit controls charging of the battery of the controller unit from the solar power generation device. (5) Both the power supply unit and the controller unit are made portable and transported to the site of various construction objects for use as the power supply for various cutting machines. (6) Both the power supply unit and the controller unit are made of an installed type and installed and fixed at a cutting work site such as a concrete structure for use as the power supply for various cutting machines.

Advantages of the Invention

[0013] According to the method for supplying power to the cutting machine of the present invention, as described above, the power supply unit and the controller unit are used in pairs. Before the construction of various construction objects by various cutting machines, the power supply unit and the controller unit are connected by connecting the power supply side connector and the controller side connector with a power cable, and the power generation device is connected to the charging connector of the controller unit with a charging cable. By operating the operation unit of the controller unit, the battery such as the lithium ion battery of the power supply unit is charged. When constructing various construction objects by various cutting machines, the power supply unit and the controller unit are connected by connecting the power supply side connector and the controller side connector with a power cable, and various cutting machines are connected to the power supply connector of the controller unit with a power supply cable. By operating the operation unit of the controller unit, power is supplied from the battery of the power supply unit to various cutting machines, so that the following unique and remarkable effects of the present invention are achieved. (1) No exhaust gas is generated and the generation of noise is also significantly reduced, so that even if the construction site is in or near a commercial area or a residential area, it will not have an adverse impact on the environment. (2) It is possible to provide a good working environment that is harmless to the health of workers at the construction site, which is preferable. (3) It can also be adapted to the recent trend of CO2 reduction. (4) When using an electric motor or a hydraulic motor at a construction site where the use of oil (hydraulic equipment and engine-driven generators) is restricted, sufficient power can be ensured. (5) Even when using various cutting machines at an indoor site without power, there is no restriction on the installation position of the power supply, there is no need to extend the cable for a long distance, and the power generation equipment can be easily installed.

Brief Description of the Drawings

[0014]

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Figure 10

Embodiments for Carrying Out the Invention

[0015] Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a method of supplying power to a cutting machine (hereinafter referred to as this method).

[0016] As shown in FIGS. 1 and 2, this method includes a cutting unit and a prime mover driven by electricity that is integrally attached to the cutting unit and operates the cutting unit, and is a core drill, wall saw, wire saw, grinder, concrete cutter (road cutter), etc., which are various cutting machines М for cutting various construction objects including concrete structures with the cutting unit. In this method, power is supplied to the various cutting machines М. In particular, the power supply unit U1 and the controller unit U2 are used in pairs. Before the construction of various construction objects by various cutting machines М, the battery B including the lithium ion battery of the power supply unit U1 is charged, and when constructing various construction objects by various cutting machines М, power is supplied from the power supply unit U1 to the various cutting machines М. In this method, for various cutting machines М such as core drills, wall saws, wire saws, grinders, and concrete cutters (road cutters), electric motors, hydraulic motors, water pressure motors, etc. are adopted as prime movers. This method can be adapted to any motor by supplying power to various drive units driven by electricity that are equipped integrally or separately with each motor to operate each motor. For example, in the case of an electric motor, power is supplied to the drive unit (integral drive unit) of the electric motor. In the case of a hydraulic motor, a separate hydraulic drive unit is connected to the hydraulic motor by a hydraulic hose, and in this case, power is supplied to the hydraulic drive unit. In the case of a water pressure motor, a separate water pressure drive unit is connected to the water pressure motor by a water pressure hose, and in this case, power is supplied to the water pressure drive unit.

[0017] The power supply unit U1 used in this method is obtained by housing a storage battery B including a lithium-ion battery in a power supply exterior case BC. In this case, the power supply exterior case BC is a box-shaped case that is long in the depth direction and consists of a hexahedral case. A lithium-ion battery is used for the storage battery B. Also, in this case, a reused battery used in an electric vehicle is adopted for the lithium-ion battery. This reused battery is housed in the power supply exterior case BC. In the following description, the lithium-ion battery B is referred to instead of the storage battery B. As shown in FIG. 3, on the case surface of this power supply exterior case BC, a power supply side connector U10 for connecting a power cable C1 that is connected to the lithium-ion battery B and conducts and connects the lithium-ion battery B and the power supply circuit of a controller unit U2 described later is provided. In this case, on the front surface of the power supply exterior case BC, as the power supply side connector U10, a battery high-power connector 1 (a connector for connecting a power main cable C1-1 for charging and discharging the power supply unit U1), a control power supply connector 2 (a connector for connecting a power supply sub-cable C1-2 for supplying power to the circuit in the power supply unit U1), and a control signal connector 3 (a connector for connecting a communication cable C1-3 with the controller unit U2) are provided. In FIG. 3, 4 is a grounding terminal for grounding the housing.

[0018] Also, the controller unit U2 used in this method is obtained by housing a power supply circuit connected to the power supply unit U1 and a control circuit connected to the power supply circuit and controlling this power supply circuit in a controller exterior case CC. In this case, the controller exterior case CC is a box-shaped case that is long in the depth direction and consists of a hexahedral case, and has substantially the same size and shape as the power supply exterior case BC.

[0019] The power supply circuit is commonly used in this type of power supply unit U1, and includes an inverter circuit that converts the DC power supplied from the power supply unit U1 into stable AC power of a predetermined frequency, a charging circuit that charges the power generated by the power generation device P into the power supply unit U1, a DC / DC circuit that converts the level of the DC voltage to supply an operating voltage to a control circuit or the like or outputs it from the power supply connector 6 described later, and a measurement circuit that measures the AC voltage and AC current supplied to various cutting machines M connected to the power supply connector 6 described later and outputs the measurement results to the control circuit. The control circuit is commonly used in this type of power supply unit U1, and includes a processing unit that executes a program stored in a storage unit by a processor such as a CPU, a storage unit that stores programs and various other data executed by the processing unit in storage devices such as a RAM, a ROM, and a hard disk, and an interface unit that transmits and receives signals between the processing unit and an external device.

[0020] On the case surface of this controller exterior case CC, as shown in FIG. 4, there is mounted a controller-side connector U20 for connecting a power cable C1, a charging connector 5 for connecting a charging cable C2 that is connected to the power supply circuit and charges the lithium-ion battery B, a power supply connector 6 for connecting a power supply cable C3 that supplies power to various cutting machines M, and an operation unit 7 for performing various operations including charging and discharging of the lithium-ion battery B and supplying power from the lithium-ion battery B to various cutting machines M, which is connected to the control circuit.

[0021] In this case, on the front of the exterior case CC for the controller, as the connector U20 on the controller side, there are provided a battery high-voltage connector 11 for connecting the main power cable C1-1 for charging and discharging the power unit U1, a control power connector 12 for connecting the sub-power cable C1-2 for supplying power to the circuit in the power unit U1, and a control signal connector 13 for connecting the communication cable C1-3 with the power unit U1. A charging connector 5 is provided as the charging connector 5. As the power supply connector 6, output terminals (3-phase terminals) 61-64 for connecting to various cutting machines M are provided. As the operation unit 7, there are provided an operation switch 71 for switching charging / cutting / discharging, a start button 72 for checking the startup and voltage of the system, a display panel 73 for displaying operation information and error information, an emergency stop button 74 for stopping the operation in case of emergency, etc. Note that 75 is a buzzer that sounds when the device stops. 76 is an air intake for cooling the controller unit U2.

[0022] In this method, these power units U1 and controller units U2 are used in pairs.

[0023] When using these power units U1 and controller units U2, in advance, that is, before the construction of various construction objects by various cutting machines M, the power unit U1 is charged. As shown in Fig. 5(1) (see Figs. 3 and 4 together), for the charging of this power unit U1, the power unit U1 and the controller unit U2 are connected by connecting the connector U10 on the power supply side and the connector U20 on the controller side with the power cable C1, and the power generation device P is connected to the charging connector 5 of the controller unit U2 with the charging cable C2. After connecting the power unit U1, the controller unit U2, and the power generation device P in this way, the lithium-ion battery B of the power unit U1 is charged by operating the operation unit 7 of the controller unit U2.

[0024] In this charging process, the power generation device P includes a solar power generation device. In this case, the solar power generation device and the controller unit U2 are connected by connecting the solar power generation device to the charging connector 5 of the controller unit U2 with a charging cable C2, and under the control of the controller unit U2, the lithium-ion battery B of the power supply unit U1 is charged from the solar power generation device. Note that in this case, the solar power generation device may be a dedicated solar power generation device, or a solar power generation device connected to an existing or general-purpose power system.

[0025] Then, when various construction objects are being constructed by various cutting machines M, as shown in FIG. 5(2), the power supply unit U1 and the controller unit U2 are connected by connecting the power supply-side connector U10 and the controller-side connector U20 with a power cable C1, and various cutting machines M are connected to the power supply connector 5 of the controller unit U2 with a power supply cable C3. In this way, by operating the operation unit 7 of the controller unit U2, power is supplied from the lithium-ion battery B of the power supply unit U1 to various cutting machines M.

[0026] In this case, as shown in FIG. 5(1), a plurality of power supply units U1 are prepared according to the needs of the construction of various construction objects. During the construction of various construction objects, each time the capacity of the previous power supply unit U1 runs out or decreases to a certain level or below, as shown in FIG. 5(3), the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply-side connector U10 and the controller-side connector U20 with a power cable C1, so that under the control of the controller unit U2, power can be continuously supplied from the next power supply unit U1 to various cutting machines M.

[0027] In addition, in this method, when carrying out construction on various construction objects by various cutting machines M, both the power supply unit U1 and the controller unit U2 are made portable and transported to the site of various construction objects for use as the power supply for various cutting machines M. Alternatively, both the power supply unit U1 and the controller unit U2 can be made installed-type and installed and fixed at the cutting work site for concrete structures or the like for use as the power supply for various cutting machines M.

[0028] Figs. 6 - 9 show examples of the use of this method for cutting construction such as drilling, cutting, and grinding of concrete structures at the construction site for repair work, renovation work, etc. of concrete structures or at the cutting work site for concrete structures.

[0029] Fig. 6 shows an example of the use of this method in the construction of drilling a concrete structure with a core drill (drilling machine) M1. In this construction, a core bit using diamond chips at the tip blade is attached to the rotating shaft of the core drill M1, and the core bit is rotated by driving the prime mover of the core drill, and the tip blade of the core bit is pressed against and rotated on the drilling surface of the concrete structure for drilling.

[0030] In this case, in this method, the power supply unit U1 and the controller unit U2 are separated and connected by a cable C1, so that the weight of the entire power supply equipment is dispersed to facilitate transportation to the construction site, and the power supply unit U1 and the controller unit U2 can be placed in series or parallel, or placed close to or separated from each other, and can even be stacked, and can be arranged according to the situation at the construction site. Then, a driving cable and a control cable are connected as a power supply cable C3 to the driving unit of the prime mover (electric motor, hydraulic motor, water pressure motor) used for this core drill M1, and these driving cable and control cable are respectively connected to the power supply connector 6 of the controller unit U2. Since the driving unit of the prime mover, the controller unit U2, and the power supply unit U1 are only connected by the cables C1 and C3 in this way, the operation is easy. In this way, by operating the operation unit 7 of the controller unit U2, power is supplied to the prime mover of the core drill M1. Also, in this case, by preparing a plurality of power supply units U1, each time the capacity of the previous power supply unit U1 runs out or decreases below a certain level during the construction of the concrete structure, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power cable C1, and under the control of the controller unit U2, power can be supplied from the next power supply unit U1 to various core drills M1. Thereby, power can be continuously supplied. By such a method, power supply can be performed stably and reliably, and the drilling work of the concrete structure can proceed smoothly.

[0031] FIG. 7 shows an example of the use of this method in the construction of cutting a concrete structure with a wall saw M2. In this construction, a guide rail is fixed to the wall surface with an anchor, a support frame equipped with a blade rotation drive device is mounted on this guide rail, a blade is attached to the blade rotation drive device, and a blade cover is placed on the blade. Then, the blade of the wall saw M2 is rotated, and this blade is moved on the guide rail via the support frame, and the wall surface is cut with the rotating blade.

[0032] In this case, in this method, the power supply unit U1 and the controller unit U2 are separated and connected to each other by the cable C1, so the weight of the entire power supply equipment is dispersed to facilitate transportation to the construction site, and the power supply unit U1 and the controller unit U2 can be arranged in series, in parallel, juxtaposed, close to each other or separated from each other, and can even be stacked, and can be arranged according to the situation at the construction site. Then, connect a driving cable and a control cable as power supply cables C3 to the driving unit of the prime mover (electric motor, hydraulic motor, or pneumatic motor) used for this wall saw M2, and connect these driving and control cables to the power supply connector 6 of the controller unit U2, respectively. Since the driving unit of the prime mover, the controller unit C2, and the power supply unit U1 are only connected by the cables C1 and C3 in this way, the operation is easy. In this way, power is supplied to the prime mover of the wall saw M2 by operating the operation unit 7 of the controller unit U2. Also, in this case, by preparing a plurality of power supply units U1, each time the capacity of the previous power supply unit U1 runs out or decreases below a certain level during the construction of the concrete structure, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power supply cable C1, and power can be supplied from the next power supply unit U1 to the wall saw M2 under the control of the controller unit U2. Thereby, power can be continuously supplied. By this method, power supply can be performed stably and reliably, and the cutting work of the concrete structure can proceed smoothly.

[0033] Fig. 8 shows an example of using this method in the construction of cutting a concrete structure with a wire saw M3. This construction takes a method of rotating the wire at high speed, bringing it into contact with the object to be cut, and cutting it. Depending on the way of applying tension of the wire to the object to be cut, it can be divided into a pull-cutting method and a push-cutting method.

[0034] In the pull-cutting method, the wire is wound around a pair of guide pulleys and the driving pulley of the driving device in an endless manner along the periphery (cutting position) of the object to be cut and brought into linear contact. While the wire is rotated at high speed by the driving device, and by moving the driving device (in the direction of pulling away from the object to be cut), an appropriate tension required for cutting is maintained as the cutting of the object to be cut progresses, and the concrete, steel bars, etc. of the object to be cut are pulled and cut.

[0035] In the pushing-through cutting method, a wire is wound endlessly between a pair of guide pulleys and a drive pulley of a driving device toward the object to be cut (the cutting position), and this wire is rotated at high speed by the driving device. At the same time, the wire running between the pair of guide pulleys is brought into linear contact with the front side of the object to be cut, pressed, and the concrete, steel bars, etc. of the object to be cut are pushed through and cut.

[0036] In these cases, in this method, the power supply unit U1 and the controller unit U2 are separated and connected by a cable C1, so that the weight of the entire power supply equipment is dispersed, facilitating transportation to the construction site. Moreover, the power supply unit U1 and the controller unit U2 can be arranged in series or parallel, placed adjacent to or separated from each other, and can even be stacked, enabling an arrangement according to the situation at the construction site. Then, a driving cable and a control cable are connected to the driving unit of the prime mover (electric motor, hydraulic motor, or pneumatic motor) used for this wire saw M3 as a power supply cable C3, and these driving cable and control cable are respectively connected to the power supply connector 6 of the controller unit U2. Since the driving unit of the prime mover, the controller unit U2, and the power supply unit U1 are only connected by the cables C1 and C3 in this way, the work is easy. In this way, power is supplied to the prime mover of the wire saw M3 by operating the operation unit 7 of the controller unit U2. Also, in this case, by preparing a plurality of power supply units U1, each time the capacity of the previous power supply unit U1 runs out or decreases below a certain level during the construction of the concrete structure, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with a power supply cable C1, and power can be supplied from the next power supply unit U1 to the wire saw M3 under the control of the controller unit U2. Thereby, power can be continuously supplied. By such a method, power supply can be performed stably and reliably, and the cutting work of the concrete structure can proceed smoothly.

[0037] Figure 9 shows an example of the use of this method in the construction of polishing a concrete structure by the polishing machine M4. In this construction, the power unit of the polishing machine M4 is energized to rotate the polishing device, and this polishing device is moved on the construction surface such as the concrete floor surface, and the construction surface is polished by the rotating polishing device.

[0038] In this case, in this method, the power supply unit U1 and the controller unit U2 are separated and connected by the cable C1, so that the weight of the entire power supply equipment is dispersed to facilitate transportation to the construction site, and the power supply unit U1 and the controller unit U2 can be arranged in series, in parallel, juxtaposed, or close to or separated from each other, and can also be stacked, and can be arranged according to the situation at the construction site. Then, a driving cable and a control cable are connected to the driving unit of the prime mover (electric motor, hydraulic motor, water pressure motor) used in this polishing machine M4 as the power supply cable C3, and these driving cable and control cable are respectively connected to the power supply connector 6 of the controller unit U2. Since only the driving unit of the prime mover, the controller unit U2, and the power supply unit U1 are connected by the cables C1 and C3 in this way, the work is easy. In this way, power is supplied to the prime mover of the polishing machine M4 by operating the operation unit 7 of the controller unit U2. Also, in this case, by preparing a plurality of power supply units U1, during the construction of the concrete structure, each time the capacity of the previous power supply unit U1 runs out or decreases below a certain level, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power supply cable C1, and power can be supplied from the next power supply unit U1 to the polishing machine M4 under the control of the controller unit U2. Thereby, power can be continuously supplied. By such a method, power supply can be performed stably and reliably, and the polishing work of the concrete structure can proceed smoothly.

[0039] Fig. 10 shows an example of using this method in the construction of cutting a concrete structure with a concrete cutter (road cutter) М5. In this construction, the power unit of the concrete cutter М5 is energized to rotate the cutter blade, and the cutter blade is moved on the road surface of a concrete pavement or an asphalt pavement, etc., and the construction surface is cut with the rotating cutter blade.

[0040] In this case, in this method, the power supply unit U1 and the controller unit U2 are separated and connected by cables C1 and C3, so as to disperse the weight of the entire power supply equipment and facilitate transportation to the construction site, and the power supply unit U1 and the controller unit U2 can be arranged in series, in parallel, side by side, or close to or separated from each other, and can even be stacked, and can be arranged according to the situation at the construction site. Then, a driving cable and a control cable are connected to the driving unit of the prime mover (electric motor, hydraulic motor, or pneumatic motor) used in this concrete cutter М5 as the power supply cable C3, and these driving cable and control cable are respectively connected to the power supply connector 6 of the controller unit U2. Since only the driving unit of the prime mover, the controller unit U2, and the power supply unit U1 are connected by the cables C1 and C3 in this way, the operation is easy. In this way, power is supplied to the prime mover of the concrete cutter М5 by operating the operation unit 7 of the controller unit U2. Also, in this case, by preparing a plurality of power supply units U1, each time the capacity of the previous power supply unit U1 runs out or decreases below a certain level during the construction of the concrete structure, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power supply cable C1, and power can be supplied from the next power supply unit U1 to the concrete cutter М5 under the control of the controller unit U2. Thereby, power can be continuously supplied. By such a method, power supply can be carried out stably and reliably, and the cutting operation of the concrete structure can proceed smoothly.

[0041] In addition, in the usage examples of these methods, the power supply unit U1 and the controller unit U2 are described as portable, and specific examples at construction sites such as repair work and renovation work of concrete structures are given. However, in the cutting work site of concrete structures, even if the power supply unit U1 and the controller unit U2 are installed, this method can be similarly applied, and it goes without saying that the same operational effects as above can be achieved.

[0042] As described above, the power supply unit U1 and the controller unit U2 are used in pairs. Before the construction of various construction objects by various cutting machines M (M1 - M4), the power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power cable U1. The power generation device P is connected to the charging connector 5 of the controller unit U2 with the charging cable C2, and the lithium - ion battery B of the power supply unit U1 is charged by operating the operation unit 7 of the controller unit U2. When constructing various construction objects by various cutting machines M, the power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with the power cable C1. Various cutting machines M are connected to the power supply connector 6 of the controller unit U2 with the power supply cable C3, and power is supplied from the lithium - ion battery B of the power supply unit U1 to various cutting machines M by operating the operation unit 7 of the controller unit U2. Therefore, the following remarkable effects are achieved. (1) Since no exhaust gas is generated from the power supply equipment and the generation of noise can also be significantly reduced, even if the construction site is in a commercial area, a residential area, or near it, it will not have an adverse impact on the environment. (2) Since the generation of exhaust gas and noise from the power supply equipment is suppressed, a good working environment that is harmless to the health of the workers at the construction site can be provided, which is preferable. (3) It is also compatible with the recent trend of CO2 reduction and can contribute to today's SDGs efforts. (4) It can cope with the case of using an electric motor or a hydraulic motor at a construction site where the use of oil (hydraulic machines or engine-driven generators) is restricted, and by using a plurality of power supply units, sufficient power can be supplied even at such a construction site. (5) Even when using various cutting machines at an indoor site without power, there is no restriction on the installation positions of the power supply unit U1 and the controller unit U2, and there is no need to extend the cable long, so the power generation equipment can be easily installed.

[0043] According to this method, the following remarkable effects can be achieved.

[0044] In this method, since electric motors, hydraulic motors, and hydraulic motors are adopted for the prime mover to correspond to various cutting machines, this method can be widely used for the construction of various construction objects using cutting machines of various drive forms.

[0045] In this method, since a reused battery used in an electric vehicle is adopted for the lithium-ion battery, cost reduction can be achieved in realizing this method, and furthermore, it can greatly contribute to today's SDGs efforts.

[0046] In this method, the power generation device includes a solar power generation device, and the solar power generation device and the controller unit U2 are connected by connecting the solar power generation device to the charging connector 5 of the controller unit U2 with a charging cable C2. By charging the lithium-ion battery B of the power supply unit U1 from the solar power generation device under the control of the controller unit U2, also in this regard, cost reduction can be achieved in realizing this method, and furthermore, it can contribute to today's SDGs efforts. Also, by charging the power generation power of renewable energy to the power supply unit U1 in this way and supplying this power in a time zone when the power generation of renewable energy is small, the electricity bill can be reduced and the utilization rate of renewable energy can be improved.

[0047] In this method, by preparing a plurality of power supply units U1, during the construction of various construction objects, each time the capacity of the previous power supply unit U1 runs out or decreases to a certain level or below, the next power supply unit U1 and the controller unit U2 are connected by connecting the power supply side connector U10 and the controller side connector U20 with a power cable C1, and under the control of the controller unit U2, power can be continuously supplied from the next power supply unit U1 to various cutting machines M. Therefore, the construction of various construction objects can be continuously carried out without interruption. By replacing the power supply unit U1 with a depleted charge with a fully charged power supply unit U1 in this way, the charging time of the power supply unit U1 and the constraints of its supply infrastructure can be eliminated.

[0048] In this method, both the power supply unit U1 and the controller unit U2 are made portable and transported to the site of various construction objects and used as the power supply for various cutting machines M, so that the construction of various construction objects at each site can be smoothly carried out.

[0049] In this method, both the power supply unit U1 and the controller unit U2 are made installation-type and installed and fixed at the cutting work site such as a concrete structure and used as the power supply for various cutting machines M, so that the construction of various construction objects at each cutting work site can be smoothly carried out.

Explanation of Reference Numerals

[0050] U1 Power supply unit BC Exterior case for power supply B Lithium-ion battery U10 Power supply side connector 1 Battery high-voltage connector 2 Control power connector 3 Control signal connector 4 Grounding terminal C1 Power cable C1-1 Main power cable C1-2 Sub-power cable C1-3 Communication cable U2 Controller unit Exterior Case for CC Controller Connector on the U20 Controller Side 11 Battery High-Power Connector 12 Control Power Connector 13 Control Signal Connector 5 Charging Connector 6 Power Supply Connector 61, 62, 63, 64 Output Terminals 7 Operation Unit 71 Operation Switch 72 Start Button 73 Display Panel 74 Emergency Stop Button 75 Buzzer 76 Air Inlet C2 Charging Cable C3 Power Supply Cable P Power Generation Device M Various Cutting Machines М1 Core Drill М2 Wall Saw М3 Wire Saw М4 Grinder М5 Concrete Cutter (Road Cutter)

Claims

1. A method for supplying power to various cutting machines including a core drill, a wall saw, a wire saw, a grinder, and a concrete cutter that have a cutting part and an electric drive prime mover integrally attached to the cutting part and that cut various construction objects including concrete structures with the cutting part, the method comprising: accommodating a storage battery including a lithium ion battery in an outer case for power supply, and having, on a case surface of the outer case for power supply, a power supply side connector for connecting a power supply cable that is connected to the storage battery and that conductively connects the storage battery and a power supply circuit of a controller unit hereinafter described; accommodating a power supply circuit connected to the power supply unit and a control circuit connected to the power supply circuit and controlling the power supply circuit in an outer case for the controller, and having, on a case surface of the outer case for the controller, a controller side connector for connecting the power supply cable, a charging connector for connecting a charging cable that is connected to the power supply circuit and that charges the storage battery, and a power supply connector for connecting a power supply cable that supplies power to the various cutting machines, and mounting an operation unit for performing various operations including charging and discharging of the storage battery and power supply from the storage battery to the various cutting machines, which is connected to the control circuit; using them in pairs, before construction of the various construction objects by the various cutting machines, connecting the power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power supply cable, connecting a power generation device to the charging connector of the controller unit with the charging cable, and charging the storage battery of the power supply unit by operating the operation unit of the controller unit; during construction of the various construction objects by the various cutting machines, connecting the power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power supply cable, connecting the various cutting machines to the power supply connector of the controller unit with the power supply cable, and supplying power from the storage battery of the power supply unit to the various cutting machines by operating the operation unit of the controller unit. A method for supplying power to various cutting machines, characterized by...

2. The method for supplying power to various cutting machines according to claim 1, wherein an electric motor, a hydraulic motor, or a pneumatic motor is adopted as the prime mover of various cutting machines.

3. The method for supplying power to various cutting machines according to claim 1, wherein a reused battery used in an electric vehicle is adopted for the lithium-ion battery.

4. Prepare a plurality of power supply units. During the construction of various construction objects, each time the capacity of the previous power supply unit runs out or decreases to a certain level or below, connect the next power supply unit and the controller unit by connecting the power supply side connector and the controller side connector with the power cable, and continuously supply power from the next power supply unit to various cutting machines under the control of the controller unit. The method for supplying power to various cutting machines according to claim 1.

5. The power generation device includes a solar power generation device. Connect the solar power generation device and the controller unit by connecting the solar power generation device to the charging connector of the controller unit with a charging cable, and charge the battery of the controller unit from the solar power generation device under the control of the controller unit. The method for supplying power to various cutting machines according to claim 1.

6. Make both the power supply unit and the controller unit portable, transport them to the site of various construction objects, and use them as the power supply for various cutting machines. The method for supplying power to various cutting machines according to claim 1.

7. Make both the power supply unit and the controller unit installed-type, install and fix them at the cutting work site such as a concrete structure, and use them as the power supply for various cutting machines. The method for supplying power to various cutting machines according to claim 1.

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