JP2021011030A - Src cutting device and vehicle comprising the src cutting device - Google Patents

Abstract

To provide an SRC cutting device capable of suppressing the movement of an SRC structure upon cutting and facilitating the cutting of the SRC structure.SOLUTION: An SRC cutting device 1 is used for cutting an SRC structure C and fittable to a vehicle body. The SRC cutting device 1 comprises fixing means 3 fixing the SRC structure C and cutting means 4 cutting the SRC structure C.SELECTED DRAWING: Figure 3

Description

The present invention relates to an SRC cutting device for cutting an SRC (steel reinforced concrete) structure and a vehicle equipped with the SRC cutting device.

As an apparatus for crushing or cutting a concrete structure, an apparatus for crushing the structure by sandwiching it between a pair of crushed portions (Patent Document 1) and an apparatus for cutting the structure with a wire saw (Patent Document 2) are known. ..

Japanese Unexamined Patent Publication No. 06-108670 JP-A-2002-086441

In the conventional device, when cutting a structure, the structure may be shaken due to vibration or the like, and it may be difficult to cut the structure.

An object of the present invention is to provide an SRC cutting device capable of suppressing the movement of an SRC structure at the time of cutting and making it easier to cut the SRC structure, and a vehicle equipped with the SRC cutting device.

The present invention provides the invention of the following aspects.
(Item 1)
An SRC cutting device that can be attached to the vehicle body for cutting SRC structures.
Fixing means for fixing the SRC structure and
A cutting means for cutting the SRC structure and
An SRC cutting device comprising.

(Item 2)
The fixing means
The first holding part and
A second sandwiching portion that can be approached and separated from the first sandwiching portion and sandwiches the SRC structure with the first sandwiching portion,
The SRC cutting apparatus according to item 1.

(Item 3)
A moving means for moving the cutting means so as to approach and separate the SRC structure is further provided.
The SRC cutting device according to item 1 or 2.

(Item 4)
The cutting means includes a blade and a driving means for rotating the blade.
The SRC cutting device further includes a control means and a detection means connected to the control means to detect the load of the drive means.
The load threshold value of the driving means is stored in the control means.
When the detecting means detects a load exceeding the load threshold value, the controlling means either stops the moving means or drives the moving means so that the cutting means separates from the SRC structure.
The SRC cutting device according to item 3.

(Item 5)
After the detection means detects a load exceeding the load threshold and the moving means is stopped or the moving means is driven to separate the cutting means from the SRC structure, the detecting means said. When a load equal to or less than the load threshold is detected, the control means drives the moving means so that the cutting means approaches the SRC structure.
The SRC cutting device according to item 4.

(Item 6)
The cutting means is further provided with a cooling means for injecting a cooling liquid.
The SRC cutting device according to any one of items 1 to 5.

(Item 7)
With the vehicle body
The SRC cutting device according to any one of items 1 to 6 attached to the vehicle body.
Vehicles equipped with.

(Item 8)
A rotation mechanism for rotating the SRC cutting device is further provided.
The vehicle according to item 7.

The cutting device of the present invention includes fixing means for fixing the SRC structure. Therefore, the movement of the SRC structure during cutting can be regulated. This facilitates cutting of the SRC structure.

It is a side view of a vehicle. It is a side view of a vehicle. (A) is a plan view of the SRC cutting device, and (b) is a plan view of a state in which the cutting means is moved forward. It is a figure which shows the hydraulic circuit of the SRC cutting apparatus. It is a block diagram of a control means. It is a top view which shows the modification of the SRC cutting apparatus. It is a figure which shows the hydraulic circuit of the SRC cutting apparatus of the modification.

The SRC cutting device and the vehicle of the present invention will be described with reference to the drawings. The embodiments described below show a preferred specific example of the present invention. The present invention is not limited to the following embodiments, and can be appropriately modified without departing from the gist thereof.

The present invention includes an SRC cutting device 1 (hereinafter, simply referred to as "cutting device 1") for cutting an SRC structure C (hereinafter, simply referred to as "structure C"), and the cutting. The present invention relates to a vehicle 100 equipped with the device 1. The structure C is, for example, a steel-framed reinforced concrete column of a high-rise building.

<1 vehicle>
1 and 2 are side views of the vehicle 100. The vehicle 100 includes a cutting device 1 and a vehicle body 10. The vehicle body 10 is a moving body that can move so as to approach and separate from the structure C. It is preferable that the vehicle body 10 can be moved so as to bend left and right. Further, it is preferable that the vehicle body 10 is provided with an elevating portion that can move up and down.

As the vehicle body 10, for example, a forklift (FIG. 1), a shovel car (FIG. 2), or the like can be used. In the embodiment shown in FIG. 1, the cutting device 1 is connected to a forklift claw (corresponding to an elevating part). Further, in the embodiment shown in FIG. 2, the cutting device 1 is connected to the arm portion (corresponding to the elevating portion) of the excavator car.

With the above configuration of the vehicle 100, the cutting device 1 can be moved closer to and separated from the structure C, and can also be moved up and down.

It is preferable that the vehicle 100 further includes a rotation mechanism 1000 for rotating the cutting device 1. As the rotation mechanism 1000, for example, a connection attachment used for rotating the claws of a forklift can be used.

The rotation mechanism 1000 in the present embodiment includes a swivel bearing 1001 and a swivel motor 1002 connected to the swivel bearing 1001, and the swivel bearing 1001 is rotated by the rotation of the swivel motor 1002. The rotation angle is preferably 360 degrees. The rotation mechanism 1000 is configured to stop at an arbitrary angle and hold the cutting device 1 at that angle.

In the embodiment shown in FIG. 1, the claw of the forklift is connected to the rotation mechanism 1000, and the cutting device 1 rotates together with the claw. In the embodiment shown in FIG. 2, the tip of the arm portion of the excavator car and the cutting device 1 are connected via the rotation mechanism 1000, and the cutting device 1 rotates with respect to the arm portion.

When the vehicle 100 includes the rotation mechanism 1000, the cutting device 1 can be rotated and the cutting device 1 can be held at an arbitrary angle with respect to the structure C.

FIG. 3A is a plan view of the cutting device 1. As shown in FIGS. 1 to 3, the cutting device 1 includes a main body frame 2, a fixing means 3, a cutting means 4, a moving means 5, a control means 6 (see FIG. 5), and a detecting means 7 (FIG. 5). 4 and FIG. 5). The fixing means 3 fixes the structure C so that the structure C does not move during cutting. The moving means 5 moves the cutting means 4 with respect to the main body frame 2 and causes the cutting means 4 to approach and separate from the structure C. The control means 6 controls the driving of the fixing means 3, the cutting means 4, and the moving means 5.

FIG. 3B is a plan view showing a state in which the cutting means 4 is moved forward from the state of FIG. 3A. When cutting the structure C, the vehicle body 10 is first moved close to the structure C. Next, as shown in FIG. 3B, the structure C is fixed by the fixing means 3 of the cutting device 1, and the cutting means 4 is moved toward the structure C by the moving means 5. The structure C is cut by the cutting means 4, and then the cutting means 4 is separated from the structure C. In this way, the cutting of the structure C by the cutting device 1 is completed.

<2 Cutting device>
Hereinafter, each component of the cutting device 1 will be described in detail. The direction of each component of the cutting device 1 will be described with reference to the front-rear direction and the vehicle width direction of the vehicle body 10.

The fixing means 3 is arranged in front of the cutting device 1. The fixing means 3 includes a first holding portion 31, a second holding portion 32, and a contacting / separating means 33. The first holding portion 31 is fixed to the main body frame 2. The second holding portion 32 is provided apart from the first holding portion 31 in the vehicle width direction. The contacting / separating means 33 is connected to the second holding portion 32, and the second holding portion 32 is brought close to and separated from the first holding portion 31. In the present embodiment, the contact / detachment means 33 is a hydraulic cylinder.

The second holding portion 32 approaches the first holding portion 31 by extending the contacting / separating means 33, and separates from the first holding portion 31 by contracting the contacting / separating means 33. When cutting the structure C, the second sandwiching portion 32 is brought closer to the first sandwiching portion 31 by extending the contacting / separating means 33, and the structure is formed between the first sandwiching portion 31 and the second sandwiching portion 32. Hold the object C and fix it. The direction of movement of the contacting / releasing means 33 (that is, whether the second holding portion 32 approaches or separates from the first holding portion 31) can be controlled by the control means 6.

The cutting means 4 includes two pulleys 41 (41a, 41b), a blade 42, a driving means 43, and a tension adjusting means (not shown).

The two pulleys 41a and 41b are provided at intervals in the vehicle width direction. Further, the pulley 41b is arranged in front of the pulley 41a. A drive means 43 is connected to the pulley 41a, and the pulley 41a is rotated by the drive means 43. In the present embodiment, the drive means 43 is a hydraulic motor. The rotation speed of the drive means 43 can be adjusted by the control means 6.

The blade 42 has a saw blade and is flaky and endless, and is bridged by two pulleys 41a and 41b. As described above, since the pulley 41b is arranged in front of the pulley 41a, the blade 42 is inclined at a predetermined angle with respect to the vehicle width direction in a plan view.

The tension adjusting means is connected to the pulley 41b. The tension adjusting means moves the pulley 41b in the vehicle width direction. Thereby, the tension of the blade 42 can be adjusted.

The moving means 5 is connected to the cutting means 4 and moves the cutting means 4 with respect to the main body frame 2. More specifically, the moving means 5 moves the cutting means 4 in the front-rear direction between the rear position close to the vehicle body 10 and the front position close to the fixing means 3 (that is, close to the structure C). Let me.

In this embodiment, the moving means 5 is a hydraulic cylinder. The moving means 5 are arranged below the cutting means 4 one by one at intervals in the vehicle width direction. When the moving means 5 expands, the cutting means 4 moves forward, and when the moving means 5 contracts, the cutting means 4 moves backward. The moving speed and the moving direction of the moving means 5 can be controlled by the controlling means 6.

FIG. 4 shows a schematic diagram of a hydraulic circuit that controls the drive of the cutting device 1. FIG. 5 is a block diagram of the control means 6.

The hydraulic circuit includes a hydraulic supply source 81, directional control valves 82 (82a to 82c), and flow control valves 83 (83a, 83b). The hydraulic supply source 81 includes an oil tank, a hydraulic pump, a pressure control valve, and the like. The directional control valves 82a to 82c are connected to the hydraulic supply source 81. The pressure control valve, the direction control valve 82, and the flow rate control valve 83 are, for example, solenoid valves.

The contact / disconnection means 33 is connected to the flood control supply source 81 via the directional control valve 82a. The directional control valve 82a controls the drive, stop, and movement directions (that is, whether to extend or contract) of the contact / detachment means 33. By switching the direction of the pressure oil flowing into the contact / disengagement means 33 by the direction control valve 82a, the movement direction of the contact / disengagement means 33 can be switched.

The drive means 43 is connected to the flood control supply source 81 via the directional control valve 82b and the flow rate control valve 83a. The directional control valve 82b controls the drive and stop of the drive means 43. The flow rate control valve 83a adjusts the flow rate of the pressure oil sent to the drive means 43, and adjusts the rotation speed of the drive means 43. The detecting means 7 is connected to the driving means 43 and detects the load of the driving means 43 during driving. In the present embodiment, the detecting means 7 is a sensor that detects the pressure acting on the driving means 43. The detection means 7 is connected to the control means 6, and transmits the detected load to the control means 6.

The moving means 5 is connected to the flood control source 81 via the directional control valve 82c and the flow rate control valve 83b. The directional control valve 82c controls the driving, stopping, and moving directions (that is, whether to extend or contract) of the moving means 5. By switching the direction of the pressure oil flowing into the moving means 5 by the direction control valve 82c, the moving direction of the moving means 5 can be switched. The flow rate control valve 83b adjusts the flow rate of the pressure oil sent to the moving means 5, and adjusts the extension speed and the drawing speed of the moving means 5.

The control means 6 is composed of a CPU, ROM, RAM, and the like, and controls the hydraulic supply source 81, the direction control valves 82a to 82c, and the flow rate control valves 83a and 83b. The control means 6 includes a storage unit 61 and a determination unit 62. The load threshold value (pressure upper limit value in this embodiment) of the drive means 43 is stored in the storage unit 61. The determination unit 62 determines whether or not the load of the drive means 43 detected by the detection means 7 exceeds the load threshold value.

When it is determined that the load of the drive means 43 detected by the detection means 7 exceeds the load threshold value, the control means 6 controls the direction of the pressure oil by the direction control valve 82c to stop the moving means 5. Or, the transportation means 5 is shrunk. That is, the cutting means 4 is stopped or moved backward.

After that, when the determination unit 62 determines that the load of the drive means 43 is equal to or less than the load threshold value, the control means 6 controls the direction switching valve 82c, and the moving means 5 controls the cutting means 4 so that the cutting means 4 approaches the structure C again. To stretch.

<3 features>
The cutting device 1 of the present invention can be used by being attached to the vehicle body 10. Therefore, by moving the vehicle body 10, the cutting device 1 can be easily moved to the structure C. In particular, since the vehicle body 10 can be bent left and right, the left and right alignment of the cutting device 1 with respect to the structure C can be easily performed. Further, since the vehicle body 10 is provided with the elevating portion, the vertical alignment of the cutting device 1 with respect to the structure C can be easily performed.

Further, in the vehicle 100 of the present invention, the cutting device 1 is rotatably connected by a rotation mechanism 1000. As a result, the blade 42 of the cutting device 1 can be easily aligned with the planned cutting position of the structure C. For example, even when it is desired to cut the structure C diagonally with respect to the axial direction of the structure C, the blade 42 can be easily aligned.

The cutting device 1 of the present invention includes a fixing means 3 for fixing the structure C. When cutting the structure C, the movement (swaying, etc.) of the structure C can be regulated by the fixing means 3, so that the structure C can be easily cut. Further, since the structure C can be fixed at the time of cutting, the load applied to the blade 42 can be reduced and the structure C can be cut with high accuracy.

Since the second sandwiching portion 32 can be approached and separated from the first sandwiching portion 31, the distance between the first sandwiching portion 31 and the second sandwiching portion 32 is appropriately adjusted according to the size of the structure C. Can be adjusted.

The cutting device 1 of the present invention includes a moving means 5 that brings the cutting means 4 closer to and separated from the structure C. As a result, the cutting means 4 can be approached and separated from the structure C not only by the movement by the vehicle body 10 but also by the moving means 5, so that the alignment can be performed more easily.

Further, in the cutting device 1 of the present invention, the moving speed of the cutting means 4 can be controlled by adjusting the moving speed of the moving means 5. As a result, the moving speed of the cutting means 4 can be adjusted according to the hardness and size of the structure C, and the load applied to the cutting means 4 can be controlled.

In the cutting device 1 of the present invention, the rotation speed of the blade 42 can be adjusted. As a result, the rotation speed of the blade 42 can be adjusted according to the hardness and size of the structure C to control the load applied to the blade 42.

In the cutting device 1 of the present invention, the blade 42 is inclined with respect to the vehicle width direction in a plan view. As a result, when the blade 42 first contacts the structure C, as shown in FIG. 3 (b), only a part of the blade 42 first contacts (the blade 42 on the side closer to the pulley 41b first contacts. ). Therefore, the load applied to the blade 42 can be suppressed as compared with the case where the entire blade 42 comes into contact with the structure C from the beginning.

The cutting device 1 of the present invention includes a detecting means 7 for detecting the load of the driving means 43, and stops the moving means 5 when the load of the driving means 43 exceeds a load threshold set in advance in the control means 6. Let or shrink. As a result, the cutting means 4 can be protected from overload, so that damage to the cutting means 4 can be prevented.

<4 Modification example>
A modified example of the cutting device 1 and the vehicle 100 will be described. The differences from the above-described embodiment will be mainly described, and the same reference numerals will be given to the components already described above, and the description thereof will be omitted. The modifications described below can be appropriately combined without departing from the gist of the present invention.

(1) In the fixing means 3, both the first holding portion 31 and the second holding portion 32 may be close to each other and separated from each other.

(2) The drive means 43 for driving the pulley 41 may be an electric motor. When the driving means 43 is an electric motor, the detecting means 7 is, for example, a sensor that detects the current value of the electric motor. In this case, the circuit that controls the drive means 43 is changed from the hydraulic circuit 8 to the electric circuit.

(3) The moving means 5 may be a rack and pinion or a slide rail, or may be driven by an electric motor. Also in this case, the circuit for controlling the moving means 5 is changed from the hydraulic circuit 8 to the electric circuit.

(4) The control means 6 of the cutting device 1 may be incorporated in the control means of the vehicle body 10.

(5) A cooling means for injecting a cooling liquid onto the blade 42 during cutting may be further provided. The cooling means includes a coolant tank for storing the coolant, a pump, and a nozzle. The coolant tank, pump and nozzle are connected by piping such as a hose. The coolant is sucked from the coolant tank by the pump, and the coolant is injected from the nozzle toward the blade 42. The pump is connected to the control means 6, and the control means 6 can control the drive and stop of the pump and the rotation speed of the pump.

(6) The number of pulleys 4 is not limited to two, and may be more than two. In the case of a large machine, for example, four pulleys 41 (41a to 41d) may be provided as shown in FIG. In the embodiment shown in FIG. 6, the drive means 43 is connected to the pulley 41a. In the embodiment shown in FIG. 6, the tension adjusting means is connected to the pulley 41b. The pulley 41b can be moved in the front-rear direction by the tension adjusting means. In this embodiment, the tension adjusting means is a hydraulic cylinder.

FIG. 7 shows a hydraulic circuit 8 for the cutting device 1 shown in FIG. In the hydraulic circuit 8 shown in FIG. 7, in addition to the hydraulic circuit 8 shown in FIG. 4, a directional control valve 82d and a flow rate control valve 83c for controlling the tension adjusting means connected to the pulley 41b are added. Although not shown, the directional control valve 82d and the flow rate control valve 83c are connected to the control means 6 and are controlled by the control means 6.

The tension adjusting means is connected to the flood control source 81 via the directional control valve 82d and the flow rate control valve 83c. The direction control valve 82d controls the drive, stop and movement directions of the tension adjusting means. By switching the direction of the pressure oil flowing into the tension adjusting means by the direction control valve 82d, the direction of movement of the tension adjusting means (that is, whether it expands or contracts) can be switched. Further, by adjusting the flow rate of the pressure oil sent to the tension adjusting means by the flow rate control valve 83c, the extension speed and the pull-in speed of the tension adjusting means can be adjusted.

(7) The cutting device 1 and the vehicle body 10 may be operated by remote control.

1 SRC cutting device 3 Fixing means 31 First holding part 32 Second holding part 4 Cutting means 42 Blade 43 Driving means 5 Moving means 6 Control means 7 Detection means 10 Vehicle body 100 Vehicle 1000 Rotating mechanism C SRC structure

Claims (8)

An SRC cutting device that can be attached to the vehicle body for cutting SRC structures.
Fixing means for fixing the SRC structure and
A cutting means for cutting the SRC structure and
An SRC cutting device comprising. The fixing means
The first holding part and
A second sandwiching portion that can be approached and separated from the first sandwiching portion and sandwiches the SRC structure with the first sandwiching portion,
The SRC cutting device according to claim 1. A moving means for moving the cutting means so as to approach and separate the SRC structure is further provided.
The SRC cutting device according to claim 1 or 2. The cutting means includes a blade and a driving means for rotating the blade.
The SRC cutting device further includes a control means and a detection means connected to the control means to detect the load of the drive means.
The load threshold value of the driving means is stored in the control means.
When the detecting means detects a load exceeding the load threshold value, the controlling means either stops the moving means or drives the moving means so that the cutting means separates from the SRC structure.
The SRC cutting device according to claim 3. After the detection means detects a load exceeding the load threshold and the moving means is stopped or the moving means is driven to separate the cutting means from the SRC structure, the detecting means said. When a load equal to or less than the load threshold is detected, the control means drives the moving means so that the cutting means approaches the SRC structure.
The SRC cutting device according to claim 4. The cutting means is further provided with a cooling means for injecting a cooling liquid.
The SRC cutting device according to any one of claims 1 to 5. With the vehicle body
The SRC cutting device according to any one of claims 1 to 6 attached to the vehicle body.
Vehicles equipped with. A rotation mechanism for rotating the SRC cutting device is further provided.
The vehicle according to claim 7.

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