Demolition system

Abstract

This system provides a demolition system that can exert appropriate operating force regardless of the specifications of the power source of the work machinery. [Solution] The demolition system comprises a work machine equipped with a first attachment which is one of a fixing attachment for fixing an object and a demolition attachment for dismantling an object, and a first drive source for driving the first attachment; a work table which supports the second attachment, the other of the fixing attachment and the demolition attachment, on its side and on which the work machine can be placed on its top surface; and a second drive source which is installed independently of the work machine and drives the second attachment.

Description

Technical Field

[0001] The present invention relates to a disassembling system for disassembling an object.

Background Art

[0002] Conventionally, as a disassembling machine for disassembling an object (for example, an automobile), a disassembling machine including a disassembling tool attached to the tip of a front working machine and a gripping device attached to a lower traveling body is known (for example, see Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the disassembling machines described in Patent Documents 1 and 2, it is necessary to drive both the disassembling tool and the gripping device with one drive source mounted on the disassembling machine. Therefore, there is a problem that the operating force of the entire disassembling machine depends on the specifications of the drive source (for example, an engine or an electric motor).

[0005] Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a disassembling system capable of exerting an appropriate operating force without depending on the specifications of the drive source of the working machine.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention provides a demolition system for dismantling an object, characterized by comprising: a work machine equipped with a first attachment which is one of a fixing attachment for fixing the object and a demolition attachment for dismantling the object, and a first drive source for driving the first attachment; a work table which supports the fixing attachment and the other of the demolition attachment, a second attachment, on its side surface and on which the work machine can be placed; and a second drive source which is installed independently of the work machine and drives the second attachment. [Effects of the Invention]

[0007] According to the present invention, a demolition system can be obtained that can exert appropriate operating force regardless of the specifications of the power source of the work machine. Other problems, configurations, and effects will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0008] [Figure 1] This is a side view of the demolition system. [Figure 2] This is a schematic diagram of the drive circuit of a work machine. [Figure 3] This is a hardware configuration diagram of a work machine. [Figure 4] These are side views (A) and top views (B) of the workbench. [Figure 5] This is a diagram showing the configuration of the drive unit. [Figure 6] This is a plan view of the workbench in a modified form. [Modes for carrying out the invention]

[0009] [Configuration of demolition system 100] An embodiment of the demolition system 100 according to the present invention will be described with reference to the drawings. Figure 1 is a side view of the demolition system 100. The demolition system 100 according to this embodiment is a system that dismantles an object (for example, an automobile, home appliance, scrap metal) using a work machine 1. As shown in Figure 1, the demolition system 100 mainly comprises a work machine 1, a workbench 40, and a drive unit 50. In this specification, front, back, left, and right are based on the viewpoint of an operator riding and operating the work machine 1, unless otherwise specified.

[0010] [Configuration of the work machine 1] The work machine 1 comprises a lower traveling body 2 and an upper rotating body 3 supported by the lower traveling body 2. The lower traveling body 2 and the upper rotating body 3 are examples of a vehicle body. However, the vehicle body is not limited to being composed of the lower traveling body 2 and the upper rotating body 3, as long as it is self-propelled.

[0011] The lower running body 2 is equipped with a pair of crawlers 4 on the left and right sides, which are continuous tracks. Driven by the travel motor 5, the pair of crawlers 4 rotate independently. As a result, the work machine 1 moves. However, the lower running body 2 may be wheeled instead of having crawlers 4.

[0012] The upper slewing body 3 is rotatably supported by the lower traveling body 2. The upper slewing body 3 rotates relative to the lower traveling body 2 as the slewing motor 6 rotates. The upper slewing body 3 mainly consists of a base slewing frame 7, a cab (driver's seat) 8 located on the front left side of the slewing frame 7, a counterweight 9 located at the rear of the slewing frame 7, and a front work implement 10 (working device) mounted on the front center of the slewing frame 7 so as to be rotatable in the vertical direction.

[0013] The cab 8 is positioned adjacent to the front implement 10 in the left-right direction (the width direction of the vehicle body). More specifically, the cab 8 is positioned to the left of the front implement 10 (on one side in the left-right direction). However, the positioning of the cab 8 is not limited to the example described above; the cab 8 only needs to be positioned on one side of the front implement 10 in the left-right direction.

[0014] The cab 8 has a space for the operator to sit and operate the work machine 1. Inside the cab 8 are a seat for the operator and a control device operated by the seated operator. The control device receives the operator's commands to operate the work machine 1. When the operator operates the control device, the lower traveling body 2 moves, the upper rotating body 3 rotates, and the front work machine 10 operates. The control device outputs control signals corresponding to the operator's commands in the cab 8 to the controller 30 (see Figure 3), which will be described later.

[0015] As shown in Figure 3, the operating device comprises, for example, a first operating unit 33, a second operating unit 34, and a changeover switch 35. The first operating unit 33 is operated to operate the first attachment 13 (i.e., the attachment drive cylinder 17). The second operating unit 34 is operated to operate the second attachment 45 (i.e., the rotating cylinders 46L, 46R, and the opening / closing cylinders 47L, 47R). For example, the first operating unit 33 is a lever, and the second operating unit 34 is a remote control. However, the specific examples of the operating device are not limited to the above examples, and may also be levers, steering wheels, pedals, switches, etc.

[0016] The changeover switch 35 is an example of a first changeover operation unit that is operated to enable the operation of one of the first operation unit 33 and the second operation unit 34 and disable the operation of the other. That is, the changeover switch 35 is configured to switch between a first state in which the operation signal of the first operation unit 33 is output to the controller 30 (i.e., the operation of the first operation unit 33 is enabled) and the operation signal of the second operation unit 34 is not output to the controller 30 (i.e., the operation of the second operation unit 34 is disabled), and a second state in which the operation signal of the first operation unit 33 is not output to the controller 30 (i.e., the operation of the first operation unit 33 is disabled) and the operation signal of the second operation unit 34 is output to the controller 30 (i.e., the operation of the second operation unit 34 is enabled).

[0017] On the other hand, the operations of the boom cylinder 14, the arm cylinder 15, and the attachment rotation cylinder 16 may be switched by the changeover switch 35, or may be effective regardless of the state of the changeover switch 35. Also, the operations of the lower traveling body 2 (traveling motor 5) and the upper revolving body 3 (swing motor 6) may be effective regardless of the state of the changeover switch 35.

[0018] Thereby, the operator boarding the cab 8 can operate the first attachment 13 by operating the first operation unit 33 by switching the changeover switch 35 to the first state, and cannot operate the second attachment 45 by operating the second operation unit 34. Also, the operator boarding the cab 8 cannot operate the first attachment 13 by operating the first operation unit 33 by switching the changeover switch 35 to the second state, and can operate the second attachment 45 by operating the second operation unit 34.

[0019] The front work implement 10 includes a boom 11 supported by the upper revolving body 3 so as to be able to rise and fall, an arm 12 supported by the tip of the boom 11 so as to be able to rotate (crowd, dump), a first attachment 13 supported by the tip of the arm 12 so as to be able to rotate (crowd, dump), a boom cylinder 14 for rotating the boom 11 with respect to the upper revolving body 3, an arm cylinder 15 for rotating the arm 12 with respect to the boom 11, an attachment rotation cylinder 16 for rotating the first attachment 13 with respect to the arm 12, and an attachment drive cylinder 17 (see FIG. 2) for driving the first attachment 13. The counterweight 9 is for taking a weight balance with the front work implement 10 and is a heavy object having an arc shape in plan view.

[0020] The first attachment 13 in this embodiment is a cutter for cutting an object. The cutter is an example of a demolition attachment in which a pair of blades open and close as the attachment drive cylinder 17 extends and retracts to cut (demolish) the object. However, the specific example of a demolition attachment is not limited to a cutter, but may also be a breaker, a crusher, etc. Also, the attachment that can be mounted on the front work machine 10 (work machine 1) is not limited to a demolition attachment, but may also be a fixing attachment for fixing an object (for example, a clamp, a grapple, a restraining device). That is, either a fixing attachment or a demolition attachment may be mounted on the front work machine 10 (work machine 1).

[0021] Furthermore, the front work implement 10 (work machine 1) is configured to allow various types of attachments to be attached and detached. In other words, by replacing the bucket of a general-purpose hydraulic excavator with a fixed attachment or a demolition attachment, it can be used as work machine 1 of the demolition system 100.

[0022] Figure 2 is a schematic diagram of the drive circuit 20 of the work machine 1. As shown in Figure 2, the work machine 1 is equipped with a drive circuit 20. The drive circuit 20 is a circuit that generates the driving force to drive the work machine 1. The drive circuit 20 is also a circuit that operates the hydraulic actuators by circulating hydraulic fluid between the hydraulic fluid tank 22 and the hydraulic actuators (for example, the travel motor 5, the slewing motor 6, the boom cylinder 14, the arm cylinder 15, the attachment rotation cylinder 16, and the attachment drive cylinder 17). The drive circuit 20 mainly comprises, for example, an engine 21, a hydraulic fluid tank 22, a hydraulic pump 23, and a hydraulic circuit 24.

[0023] The engine 21 is an example of a first drive source that generates rotational driving force to drive the work machine 1. However, the first drive source that drives the first attachment 13 may be an electric motor instead of the engine 21. The hydraulic oil tank 22 stores the hydraulic oil supplied to the hydraulic actuator. The hydraulic pump 23 is connected to the output shaft of the engine 21 and supplies the hydraulic oil stored in the hydraulic oil tank 22 to the hydraulic actuator using the rotational driving force generated by the engine 21.

[0024] The hydraulic circuit 24 controls the supply and discharge direction of hydraulic fluid to the hydraulic actuators according to the control of the controller 30. The hydraulic circuit 24 consists of, for example, a directional valve, a check valve, a relief valve, etc. The configuration of the hydraulic circuit 24 is already well known, so a detailed explanation will be omitted. The rotational speed of the hydraulic motors (travel motor 5, slewing motor 6) is controlled by the amount of hydraulic fluid supplied, and the direction of rotation is controlled by the direction of the supplied hydraulic fluid. The hydraulic cylinders (boom cylinder 14, arm cylinder 15, attachment rotation cylinder 16, attachment drive cylinder 17) extend and retract when hydraulic fluid is supplied to one of the bottom chamber and rod chamber, and the hydraulic fluid is discharged from the other.

[0025] Figure 3 is a hardware configuration diagram of the work machine 1. The work machine 1 includes a controller 30. The controller 30 includes a CPU (Central Processing Unit) 31 and memory 32. The memory 32 is composed of, for example, ROM (Read Only Memory), RAM (Random Access Memory), HDD (Hard Disk Drive), or a combination thereof. The controller 30 realizes the processing described later by having the CPU 31 read and execute program code stored in the ROM or HDD. RAM is used as a work area when the CPU 31 executes the program.

[0026] However, the specific configuration of the controller 30 is not limited to this and may be implemented using hardware such as an ASIC (Application Specific Integrated Circuit) or FPGA (Field-Programmable Gate Array).

[0027] Furthermore, the work machine 1 is further equipped with a transmission interface 36. The transmission interface 36 is a communication interface that transmits the operation signals output from the second operation unit 34 to the receiving interface 55, which will be described later, via a communication network (e.g., the Internet, a mobile communication system, Wi-Fi®).

[0028] The controller 30 controls the overall operation of the work machine 1. For example, the controller 30 controls the operation of the engine 21, hydraulic pump 23, and hydraulic circuit 24 based on operation signals output from the operating device. This allows the hydraulic actuators of the work machine 1 to operate according to the operations of the operator in the cab 8. More specifically, the controller 30 operates the first attachment 13 based on operation signals output from the first operating unit 33. As another example, the controller 30 transmits the operation signals output from the second operating unit 34 to the receiving interface 55 via the transmitting interface 36. This allows the second attachment 45 to operate according to the operations of the operator in the cab 8.

[0029] [Configuration of Workbench 40] Figure 4 shows a side view (A) and a top view (B) of the workbench 40. As shown in Figures 1 and 4, the workbench 40 has a roughly rectangular parallelepiped shape. The workbench 40 is installed on the mounting surface G at the site where the demolition work described later will be carried out. The workbench 40 may simply be placed on the mounting surface G, or it may be fixed to the mounting surface G with bolts or the like. The workbench 40 has an upward-facing top surface 41 and a side surface 42 facing sideways. The workbench 40 is also fitted with a stopper 43, a ramp 44, and a second attachment 45.

[0030] The upper surface 41 of the workbench 40 is the surface on which the work machine 1 is placed. The work machine 1 can be placed on the upper surface 41 to perform demolition work. A stopper 43 is attached to the front end of the upper surface 41. The stopper 43 protrudes upward from the front end of the upper surface 41 and extends in the left and right directions. The stopper 43 serves to prevent the work machine 1 from falling off the workbench 40. However, the stopper 43 is optional.

[0031] The side portion 42 of the workbench 40 extends vertically and is continuous in the circumferential direction between the upper portion 41 and the lower portion of the workbench 40. Hereinafter, the side portion 42 of the workbench 40 that faces rear will be referred to as the rear portion 42B, and the side that faces forward will be referred to as the front portion 42F. A ramp 44 is attached to the rear portion 42B, and a second attachment 45 is attached to the front portion 42F.

[0032] The ramp 44 connects the mounting surface G and the upper surface 41 of the workbench 40. The work machine 1 can move back and forth between the mounting surface G and the upper surface 41 of the workbench 40 via the ramp 44. However, the ramp 44 is optional. Alternatively, the work machine 1 may be lifted by a crane or the like to move back and forth between the mounting surface G and the upper surface 41 of the workbench 40.

[0033] The second attachment 45 is operated by hydraulic fluid supplied from the drive unit 50. In this embodiment, the second attachment 45 is a restraining device. However, the specific example of the second attachment 45 is not limited to a restraining device, and may be the other of the fixed attachment and the dismantling attachment described above. That is, the first attachment 13 may be a fixed attachment and the second attachment 45 may be a dismantling attachment.

[0034] The second attachment 45, acting as a restraining device, is operated by rotating cylinders 46L and 46R and opening / closing cylinders 47L and 47R. More specifically, the entire second attachment 45 rotates around a pivot axis X that extends in the left-right direction as the rotating cylinders 46L and 46R extend and retract. In addition, the pair of arms of the second attachment 45 open and close as the opening / closing cylinders 47L and 47R extend and retract. As a result, the second attachment 45 can restrain the object against the mounting surface G.

[0035] The rotating cylinders 46L and 46R and the opening / closing cylinders 47L and 47R are examples of actuators that drive the second attachment 45 by the driving force of the drive unit 50. At least a portion of these actuators (in this embodiment, the rotating cylinders 46L and 46R) are housed inside the workbench 40. On the other hand, the opening / closing cylinders 47L and 47R are connected to the front portion 42F of the workbench 40 and to each of the pair of arms of the second attachment 45. However, a portion of the opening / closing cylinders 47L and 47R may be housed inside the workbench 40. On the other hand, a portion or all of the rotating cylinders 46L and 46R may be located outside the workbench 40.

[0036] [Configuration of drive unit 50] Figure 5 is a diagram showing the configuration of the drive unit 50. The drive unit 50 is a unit that drives the second attachment 45 (more specifically, the rotating cylinders 46L, 46R and the opening / closing cylinders 47L, 47R). As shown in Figure 5, the drive unit 50 mainly comprises an electric motor 51, a hydraulic oil tank 52, a hydraulic pump 53, a hydraulic circuit 54, a receiving interface 55, and a changeover switch 56.

[0037] The electric motor 51 is an example of a second drive source that generates a driving force to rotate the hydraulic pump 53 using power supplied from an external power source or battery. However, the second drive source that drives the second attachment 45 may be an engine instead of the electric motor 51. The hydraulic oil tank 52 stores the hydraulic oil supplied to the hydraulic actuators (rotating cylinders 46L, 46R, opening / closing cylinders 47L, 47R). The hydraulic pump 53 is connected to the output shaft of the electric motor 51 and supplies the hydraulic oil stored in the hydraulic oil tank 52 to the hydraulic actuators using the rotational driving force generated by the electric motor 51.

[0038] The hydraulic circuit 54 controls the supply and discharge direction of hydraulic fluid to the hydraulic actuator according to the operation signal received through the receiving interface 55. The hydraulic circuit 54 consists of, for example, a directional control valve, a check valve, a relief valve, etc. The configuration of the hydraulic circuit 54 is already well known, so a detailed explanation will be omitted. The receiving interface 55 is a communication interface that receives the operation signal output from the transmitting interface 36 via a communication network (for example, the Internet, a mobile communication system, Wi-Fi®).

[0039] The changeover switch 56 is an example of a second switching operation unit that switches whether or not to operate the second attachment 45 by operating the second operation unit 34. The changeover switch 56 is configured to switch between an output state, which outputs the operation signal received through the receiving I / F 55 to the hydraulic circuit 54, and a cutoff state, which cuts off the output to the hydraulic circuit 54. When the changeover switch 56 is switched to the output state, the second attachment 45 operates according to the operation of the second operation unit 34. On the other hand, when the changeover switch 56 is switched to the cutoff state, the second attachment 45 does not operate even if the second operation unit 34 is operated.

[0040] As shown in Figure 1, the drive unit 50 is installed independently of at least the work machine 1. Furthermore, the drive unit 50 according to this embodiment is also installed independently of the workbench 40. The drive unit 50 is connected to the workbench 40 by a pipeline 57 that supplies hydraulic fluid to the second attachment 45. The pipeline 57 is made up of, for example, a metal pipe, a flexible hose, or a combination thereof. However, some or all of the components of the drive unit 50 may be housed inside the workbench 40.

[0041] [Demolition Procedure] The following describes the procedure for dismantling an object using the dismantling system 100. First, the work machine 1 is placed on the upper surface 41 of the workbench 40, and the object is positioned around the workbench 40 (more specifically, around the second attachment 45) using a crane or the like. Also, the changeover switch 56 is switched to the output state.

[0042] Next, the operator in cab 8 switches the changeover switch 35 to the second state and operates the second control unit 34 to secure the object with the second attachment 45. Then, the operator in cab 8 switches the changeover switch 35 to the first state and operates the first control unit 33 to dismantle the object with the first attachment 13.

[0043] [Effects of the Embodiment] According to the above embodiment, the first attachment 13 is operated by an engine 21 mounted on the work machine 1, and the second attachment 45 is operated by an electric motor 51 installed independently of the work machine 1. This allows for the generation of appropriate operating force without depending on the specifications of the engine 21 of the work machine 1, compared to the conventional technology in which both the first attachment 13 and the second attachment 45 are driven by the engine 21. Furthermore, since the electric motor 51 is independent of the work machine 1, the second attachment 45 can be driven by a large electric motor 51 that is not dependent on the size of the work machine 1.

[0044] Furthermore, according to the above embodiment, the work machine 1 is placed on the upper surface 41 of the workbench 40, to which the second attachment 45 is attached to the front portion 42F, and the demolition work is performed. As a result, the operator in the cab 8 can perform the demolition work with the same field of view as in the conventional technology. In addition, compared to the case where the work machine 1 is operated at a position different from the workbench 40, the demolition work can be performed in a narrow space.

[0045] Furthermore, according to the above embodiment, the second attachment 45 can be detached from the work machine 1, and the bucket of a general-purpose hydraulic excavator can be replaced with the first attachment 13. This makes it possible to realize the demolition system 100 without using a dedicated demolition machine. When demolition work is not being performed, the first attachment 13 can be replaced with a bucket, and the work machine 1 can be used as a hydraulic excavator. Moreover, since the size and opening angle of the second attachment 45 are not limited to the width of the work machine 1, the range of choices for the second attachment 45 is broadened.

[0046] Furthermore, according to the above embodiment, the demolition system 100 can be further miniaturized by housing the rotating cylinders 46L and 46R inside the workbench 40. Moreover, the demolition system 100 can be further miniaturized by housing the drive unit 50 inside the workbench 40.

[0047] Furthermore, according to the above embodiment, by switching the changeover switch 35 to enable only one of the first attachment 13 and the second attachment 45, unintended operation due to erroneous operation can be prevented. Moreover, according to the above embodiment, by further providing a changeover switch 56, unintended operation of the second attachment 45, which is located at a distance from the work machine 1, can be prevented in two ways.

[0048] [Differentiation] Figure 6 is a plan view of workbenches 40A and 40B according to a modified example. As shown in Figure 6, workbenches 40A and 40B may be configured to accommodate multiple second attachments 45A and 45B. That is, workbenches 40A and 40B may each be equipped with multiple mounting brackets to which second attachments 45A and 45B can be attached.

[0049] As an example, as shown in Figure 6(A), multiple second attachments 45A and 45B may be mounted on different sides (for example, the front and right sides) of the side portion 42 of the workbench 40A. As another example, as shown in Figure 6(B), multiple second attachments 45A and 45B may be mounted on the same side (for example, the front) of the side portion 42 of the workbench 40B. Furthermore, multiple second attachments 45A and 45B may be driven by a common drive unit 50 or by different drive units 50.

[0050] According to the above modification, the demolition work can be carried out smoothly by using the second attachments 45A and 45B as needed. This reduces the disadvantage of the demolition system 100, which cannot move the second attachment 45, compared to the conventional technology. The multiple second attachments 45A and 45B may be of the same type or different types. Alternatively, multiple workbenches 40 may be set up side by side, and the work machine 1 may move between the multiple workbenches 40 to carry out the demolition work.

[0051] The embodiments described above are illustrative for explaining the present invention and are not intended to limit the scope of the invention to those embodiments only. Those skilled in the art can implement the present invention in various other forms without departing from the spirit of the invention. [Explanation of Symbols]

[0052] 1: Working Machinery 2: Lower running body 3: Upper rotating body 4: Crawler 5: Driving motor 6: Swivel motor 7: Swivel Frame 8: Cab 9: Counterweight 10: Front work machine 11: Boom 12: Arm 13: First Attachment 14: Boom Cylinder 15: Arm Cylinder 16: Attachment Rotating Cylinder 17: Attachment drive cylinder 20: Drive circuit 21: Engine 22,52: Hydraulic oil tank 23,53: Hydraulic pump 24,54: Hydraulic circuit 30: Controller 31: CPU 32: Memory 33: 1st operation section 34:Second operation section 35, 56: Changeover switch 36: Transmit I / F 40: Workbench 41:Top part 42: Side part 42B: Rear part 42F: Front part 43: Stopper 44: Slope 45: Second Attachment 46L, 46R: Rotating cylinder 47L, 47R: Opening / closing cylinder 50: Drive Unit 51: Electric motor 55: Receiving Interface 57: Conduit 100: Demolition System G: Mounting surface X: Rotation axis

Claims

1. In a demolition system that dismantles an object, A work machine comprising a first attachment which is either a fixing attachment for fixing the object or a dismantling attachment for dismantling the object, and a first drive source for driving the first attachment, The fixing attachment and the second attachment, which is the other of the dismantling attachment, are supported by the side, and the work table on which the work machine can be placed is provided on the top surface, A demolition system characterized by comprising a second drive source installed independently of the aforementioned work machine and for driving the second attachment.

2. In the demolition system described in claim 1, A demolition system characterized in that an actuator that drives the second attachment by the driving force of the second drive source is housed inside the workbench.

3. In the demolition system described in claim 1, A demolition system characterized in that a plurality of the second attachments are mounted on the workbench.

4. In the demolition system described in claim 1, The second attachment is operated by hydraulic fluid supplied from the second drive source, The demolition system is characterized in that the second drive source is installed independently of the workbench and is connected to the workbench by a pipeline that supplies hydraulic fluid to the second attachment.

5. In the demolition system described in claim 1, The aforementioned work machine is A first operating unit which is operated to operate the first attachment, A second operating unit operated to operate the second attachment, A demolition system characterized by comprising a first switching operation unit which is operated to enable the operation of one of the first operation unit and the second operation unit and to disable the operation of the other.

6. In the demolition system described in claim 5, A demolition system characterized by comprising a second switching operation unit that switches whether or not to operate the second attachment according to the operation of the second operation unit.

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