JP2015004238A - Holding and cutting apparatus, and holding and cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding and cutting apparatus and a holding and cutting method which hold a cutting object member in a high place, a place hardly capable of being approached by a person, and the like, and which can cut any of a column and a beam in the state of holding the cutting object member.SOLUTION: A holding and cutting apparatus 10 includes: holding means 12 to be tiltably attached to a distal end of a swingable, tiltable and extendable drive arm 16, that holds a cutting object member 14; and a cutting device 20 that is coupled to the holding means 12 by coupling means 18 and cuts the cutting object member 14 held by the holding means 12.

Description

  The present invention relates to a gripping / cutting device and a gripping / cutting method using the gripping / cutting device.

Conventionally, in the dismantling of a building frame, cutting of steel beams and steel columns, etc. at high places and places where people are difficult to approach, for example, attaching a cutting device (crusher) to the tip of a hydraulic drive arm, It was crushed (crushed) at the nip.
However, the crusher has a limit in the size of the steel beam and the steel column that can be clipped from the size of the sandwiching portion, and crushing the steel beam and the steel column having a large outer diameter and a cross-sectional area is difficult. For this reason, there has been a demand for a cutting device that cuts a steel beam, a steel column, or the like having a large outer diameter and a large cross-sectional area in a high place or a place where it is difficult for people to approach. A wire saw can be used for cutting a steel beam or a steel column having a large outer diameter or cross-sectional area.
Here, the cutting technique which uses a wire saw in the place where a person cannot approach easily is proposed (for example, patent documents 1).

The cutting machine of patent document 1 attaches the concrete cutting machine using a wire saw on a frame with a rubber crawler so as to be movable in the horizontal direction, and cuts the vertical member in the horizontal direction. The position is moved up and down with the concrete cutting machine attached to change the cutting position.
If this structure is applied, even if the circumference | surroundings of a large-sized concrete structure are irregular terrain, a wire saw can be brought close to a concrete structure and a concrete structure can be cut | disconnected by arbitrary height.

JP-A-7-189502

However, Patent Document 1 can cut a vertical member horizontally, but cannot cut a horizontal member vertically.
In view of the above facts, the present invention provides a gripping and cutting apparatus and a gripping and cutting method capable of gripping a member to be cut in a high place or a place where it is difficult for a person to approach, and cutting in either the horizontal direction or the vertical direction in the gripped state. The purpose is to provide.

  A gripping and cutting device according to a first aspect of the present invention is tiltably attached to the tip of a drive arm that can be swung, tilted, and extended, and is connected to the gripping means for gripping a member to be cut by the gripping means and a connecting means. And a cutting device for cutting the member to be cut gripped by the gripping means.

According to the first aspect of the present invention, the gripping means attached to the tip of the swingable / tilting / extendable drive arm tilts so that the member to be cut at a high position is a horizontal member or a vertical member. Even so, it can be gripped. A cutting device is connected to the gripping means by a connecting means, and cutting can be performed while the gripping means grips a member to be cut.
For this reason, it can prevent that the cut | disconnection target member fell, and it can cut | disconnect in the stable state by connecting a cutting device to a holding means.

According to a second aspect of the present invention, in the gripping and cutting apparatus according to the first aspect, the connecting means is configured to change a cutting direction of the cutting apparatus in a state where the gripping means grips the cutting target member. It is characterized in that the direction intersects the axis of the member.

According to the second aspect of the present invention, the connecting means attaches the cutting device in a direction intersecting with the axis of the member to be cut while being held by the holding means. Thereby, a cutting device can cut | disconnect the cutting object member in the direction which cross | intersects an axis line. As a result, the cutting device can cut the member to be cut with the shortest cutting distance.

According to a third aspect of the present invention, in the gripping and cutting device according to the first or second aspect, the cutting device is connected to the distal end side in the longitudinal direction of the drive arm by the connecting means. .
Thereby, the cutting device does not hinder the turning, tilting and extending / contracting operations of the drive arm.

According to a fourth aspect of the present invention, in the gripping and cutting device according to the first or second aspect, the pair of cutting devices are connected to both side surfaces of the gripping means by the connecting means.
Thereby, it is possible to cut the member to be cut at two places simultaneously on both sides of the gripping means.

  According to a fifth aspect of the present invention, in the gripping and cutting device according to any one of the first to fourth aspects, the cutting device is attached to a connecting member connected to the connecting means and the connecting member. A slide mechanism; a frame member slidably attached to the slide mechanism; and a subframe fixed to the frame member and attached to a wire saw for cutting the member to be cut. It is said.

According to invention of Claim 5, a cutting device is equipped with a wire saw, a sub frame is moved by sliding a frame member to the direction of a cutting object member with a slide mechanism, and a cutting object member is cut with a wire saw. be able to. Thereby, even if it is a member with a large outer diameter dimension or cross-sectional area, it can cut | disconnect by adjusting the slide distance of a wire saw.

  A gripping and cutting method according to a sixth aspect of the present invention is a gripping and cutting method for cutting a member to be cut using the gripping and cutting device according to any one of the first to fifth aspects, It has the process of holding the said cutting object member with the holding means attached to the front-end | tip, and the process of cut | disconnecting the said cutting object member which the said holding means hold | gripped with a cutting device.

According to the sixth aspect of the present invention, in the step of gripping the cutting target member, the gripping means attached to the tip of the drive arm grips the cutting target member, and in the step of cutting by the cutting device, the gripping means grips the cutting target member. The member to be cut is cut.
Thereby, the member to be cut can be cut by the gripping and cutting device.

  Since the present invention is configured as described above, in a high place or a place where it is difficult for a person to approach, a member to be cut is gripped, and a gripping and cutting device capable of cutting in both the horizontal direction and the vertical direction in a gripped state, and gripping and cutting A method can be provided.

It is a perspective view which shows the basic composition of the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a disassembled perspective view of the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the basic composition of the holding | grip apparatus in the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the basic composition of the cutting device in the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which gripped the beam with the holding means of the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which hold | gripped the pillar with the holding means of the holding | grip cutting device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which hold | gripped the beam with the holding means of the holding | grip cutting device which concerns on 2nd Embodiment of this invention.

(First embodiment)
The gripping / cutting device 10 according to the first embodiment of the present invention will be described with reference to FIGS. As shown in each perspective view of FIGS. 1, 2, and 5, a gripping and cutting device 10 includes a crusher (nibbler) 12 as a gripping means having claw portions 30A and 30B, and a steel beam as a member to be cut. A cutting device 20 for cutting 14 with a wire saw 28, and an attachment 18 for connecting the crusher 12 and the cutting device 20.

As shown in FIG. 3, the crusher 12 is formed at the central base portion 64 and one end portion of the central base portion 64 and joined to the tip end portion of the drive arm 16 (see FIG. 5). 32 and two dampers 34A for opening and closing the two claw portions 30A and 30B provided at the other end of the central base 64 and the claw portions 30A and 30B provided to face each other on the same plane. , 34B.
Opposing end faces of the two claws 30A and 30B are gripping and cutting surfaces, and the gripping and cutting surfaces are symmetrically sandwiched between the incisors 38A and 38B and the steel beam 14 from both sides (projections). Part) 40A and 40B are formed.

One end of the claw portions 30A, 30B (the end portion on the side of the incisors 38A, 38B) is pin-joined by the pin joint portions 36A, 36B provided on the central base material portion 64 side, and the other end of the claw portions 30A, 30 The portions are pin joint portions 42A and 42B and are pin-joined to one ends of the dampers 34A and 34B. The other ends of the dampers 34 </ b> A and 34 </ b> B are pin-bonded at the bonding position between the central base material portion 64 and the bonding portion 32. As a result, the tips of the claws 30A, 30 can be expanded in the direction of the arrow P1 by contracting the dampers 34A, 34B in the direction of the arrow R1, and the claws can be extended by extending the dampers 34A, 34B in the direction of the arrow R2. The tips of the portions 30A and 30 can be shortened in the direction of the arrow P2.
As a result, the incisor portions 38A and 38B facing the claw portions 30A and 30B can be cut by pressing the steel beam 14 from both sides. Further, the protrusions 40A and 40B can be held by pressing the steel beam 14 from both sides. In the present embodiment, the incisors 38 </ b> A and 38 </ b> B are not used for cutting the steel beam 14.

Here, the crusher 12 is joined to the tip of the drive arm 16 that can be swung, tilted, and expanded and contracted by the joint 32. Thereby, the crusher 12 is moved to the cutting position of the member to be cut by the turning / tilting / extending operation of the drive arm 16. In addition, the crusher 12 holds the steel beam 14 with the protrusions 40 </ b> A and 40 </ b> B by operating the drive arm 16.
Here, as the drive arm 16, various drive arms 16 widely used in construction work machines can be used. The construction machine is operated by an operator.

An attachment (connecting means) 18 is connected to one side surface of the central base portion 64 of the crusher 12.
As shown in FIG. 2, the attachment 18 includes a crusher joining plate 44 formed of a steel plate joined to the crusher 12, and a cutting device joining member 46 formed of a channel material or the like joined to the cutting device 20. And a connecting member 45 formed of a channel material or the like for connecting the crusher joining plate 44 and the cutting device joining member 46.
The crusher joining plate 44, the cutting device joining member 46, and the connecting member 45 are configured such that two sets having the same configuration in a side view face each other with a predetermined distance therebetween, and the connection strength is obtained by opening the predetermined distance. Is high.
The crusher joining plate 44 is connected to one side surface 64 </ b> A of the central base portion 64 of the crusher 12, and the cutting device joining member 46 is connected to a connecting plate 48 attached to the main frame 22 of the cutting device 20. .

Here, as shown in FIG. 5, the cutting device 20 is connected to the distal end side of the drive arm 16 in the longitudinal direction by an attachment 18. That is, when the axis J1 of the drive arm 16 coincides with the axis J2 of the member to be cut, the attachment 18 is connected to the opposite side of the drive arm 16 with the crusher 12 in between. Thereby, the cutting device 20 does not hinder the bending and stretching operations and the rotating operation of the drive arm 16.
Further, as shown in FIG. 5, the attachment 18 is configured so that the cutting direction of the cutting device 20 intersects the axis of the steel beam 14 while the crusher 12 holds the steel beam 14. Thereby, the steel beam 14 can be cut at the shortest cutting distance in the direction intersecting the axis.

Next, the cutting device 20 will be described.
As shown in FIG. 4, the cutting device 20 has a main frame 22 and a subframe 26. The main frame 22 includes a connection plate 48 connected to the attachment 18, a slide mechanism 50 fixed to the connection plate 48, and a main frame member 24 slidably attached to the slide mechanism 50. A subframe 26 is fixed to the main frame member 24, and a wire saw 28 for cutting the steel beam 14 is attached to the subframe 26 so as to be able to run. Thus, by sliding the main frame member 24 of the main frame 22 in the direction of the steel beam 14, the subframe 26 to which the wire saw 28 is attached to be able to travel is moved in the direction of the steel beam 14, and the wire saw 28 is moved. Thus, the steel beam 14 can be cut. At this time, by making the slide distance larger than the steel beam 14, even the steel beam 14 having a large outer diameter and a large cross-sectional area can be cut by the wire saw 28.

The main frame body 24 is formed in a gate shape, and a connecting plate 48 is passed between two parallel members of the main frame member 24 in a crossing direction. The connecting plate 48 is formed of a channel material, and a slide mechanism 50 is fixed to both ends on one plane side of the connecting plate 48. In the slide mechanism 50, two members constituting the gate-shaped column portion of the main frame member 24 are inserted in parallel.
The slide mechanism 50 is provided with a pinion with a drive motor, and the main frame 24 is configured with a rack that meshes with the pinion (not shown). Thereby, by controlling the rotation direction of the pinion, the main frame body 24 can be moved in the direction intersecting the connecting plate 48 (the direction of the arrow V1).
The cutting device joining member 46 of the attachment 18 is connected to the side of the connecting plate 48 opposite to the surface on which the slide mechanism 50 is attached.

A subframe 26 is attached to the open end side of the main frame 22. The sub-frame 26 has a gate-shaped sub-member 52, and the end side to which two parallel frame members of the sub-member 52 are fixed is attached to the opening end of the main frame body 24. Thereby, the sub member 52 can be moved in the direction of the arrow V <b> 1 with respect to the connecting plate 48 together with the main frame body 24.
Frame members 54A and 54B in an intersecting direction are attached to the fixed end portion side of the sub member 52, and the opposite side of the two frame members parallel to the sub member 52 to the frame members 54A and 54B is open. It is considered as an end.

  A main pulley 56 and a main motor 58 for running the wire saw 28 are attached to the frame member 54A. The frame member 54B is provided with an auxiliary pulley 60 for tension cutting. On the open end side of the sub-frame 26, a steel pipe expandable member 53 is slidably inserted in the direction of the arrow V2 into a sub member 52 formed by a hollow steel pipe. The elastic member 53 is provided with an auxiliary pulley 62 for cutting. The wire saw 28 is attached to each of these pulleys so that it can run. Thereby, the steel beam 14 can be cut | disconnected with the wire saw 28 which is located between the open ends and runs between the open ends. At this time, if the beam of the steel beam 14 is large, the necessary cutting dimensions can be ensured by extending the stretchable member 53. In addition, although illustration is abbreviate | omitted, when a beam width of the steel beam 14 is large by providing an expansion-contraction member in the center part of frame material 54A, 54B, a required cutting width can be ensured.

The wire saw 28 rotates the main motor 58 in the direction of arrow S1, for example, and rotates the main pulley 56 in the direction of arrow S1. Thereby, the wire saw 28 hung on the main pulley 56 can be run in the direction of the arrow S2.
Although illustration is omitted here, the traveling of the wire saw 28 is performed by remote control from the construction machine. At this time, the driving force (load) of the electric motor provided on the main pulley 56 that drives the wire saw 28 can be confirmed by the current value at the remote operation position. Thereby, the wire saw 28 can always be run with an appropriate tension.
Also, if a monitoring camera device for video input or a microphone for voice input is attached to, for example, the attachment 18 of the gripping and cutting device and these monitoring devices are provided at the work position, the wire saw 28 is cut by the monitoring device. You can check the situation with video and sound. Thereby, the cutting operation can be performed more accurately.

With this configuration, the crusher 12 and the cutting device 20 are connected by the attachment 18 and moved integrally by the rotatable drive arm 16. Thereby, the front-end | tip of the drive arm 16 can be moved to the steel beam 14 in the place where a high place or a person cannot approach easily, for example. Further, by turning, tilting, and expanding / contracting the drive arm 16, it is possible to cope with not only the steel beam 14 but also a steel column 66 described later.
At this time, the steel beam 14 is gripped by the crusher 12, and the gripped steel beam 14 is remotely operated and cut by the cutting device 20, so that the cut steel beam 14 can be prevented from falling. Moreover, since the beam 14 is cut while being held by the crusher 12, the vibration of the steel beam 14 accompanying the cutting can be suppressed and cut.

Next, a cutting method for cutting the steel beam 14 will be described with reference to FIG.
First, the gripping and cutting device 10 is attached to the drive arm 16. Specifically, a crusher 12 that holds the steel beam 14 and a cutting device 20 that cuts the steel beam 14 held by the crusher 12 are connected by an attachment 18 to assemble the holding and cutting device 10 (see FIG. 1). Subsequently, the gripping and cutting device 10 is attached to the tip of the drive arm 16.
Subsequently, the construction work machine is operated, and the steel beam 14 is gripped by the crusher 12 attached to the tip of the drive arm 16 by turning, tilting, and extending the drive arm 16. At this time, the steel beam 14 is sandwiched and held by the protrusions 40A, 40B at the tip, etc. inside the claw portions 30A, 30B of the crusher 12.
Finally, with the crusher 12 holding the steel beam 14, the cutting device 20 moves the main frame member 24 and the sub frame member 52 downward (in the direction of arrow P1) while running the wire saw 28, The steel beam 14 is cut longitudinally with a wire saw 28.

Next, a cutting method for cutting the steel column 66 will be described with reference to FIG.
Also in this case, as in the case of the steel beam 14, the crusher 12 and the cutting device 20 for cutting the steel beam 14 gripped by the crusher 12 are connected by the attachment 18 to prepare the gripping and cutting device 10. Subsequently, the gripping and cutting device 10 is attached to the tip of the drive arm 16.
Subsequently, the steel beam 14 is gripped by the crusher 12 attached to the tip of the drive arm 16 by turning, tilting and extending the drive arm 16. At this time, the steel column 66 is sandwiched and held by the protrusions 40A and 40B at the tip, which are inside the claw portions 30A and 30B of the crusher 12.
Finally, with the crusher 12 holding the steel column 66, the cutting device 20 moves the main frame body 24 and the sub member 52 laterally (in the direction of the arrow P2) while running the wire saw 28, The steel column 66 is cut laterally with the wire saw 28.

  As described above, since the crusher 12 is attached to the tip of the drive arm 16 in this embodiment, the crusher 12 turns, tilts, and expands and contracts the steel arm 66 or the steel beam 14 with the crusher 12. Any of these can be gripped. Moreover, since the cutting device 20 cuts the steel column 66 or the steel beam 14 in a state where the crusher 12 holds, the cutting can be performed while suppressing the vibration of the steel column 66 or the steel beam 14. Furthermore, it is possible to prevent the cut steel column 66 or the steel beam 14 from falling.

  Moreover, the cutting device 20 cuts with the wire saw 28, sliding the sub-frame 26 in the direction of the steel column 66 or the steel beam 14. Thereby, even if it is the steel column 66 or the steel beam 14 with a large outer diameter dimension or cross-sectional area, it can cut | disconnect with the wire saw 28 by making slide distance larger than a cutting object member.

In the present embodiment, the steel beam 14 and the steel column 66 have been described as examples of members to be cut. However, the present invention is not limited to this. For example, the present invention may be applied to a building member of a high-rise building or a building member of a building contaminated with harmful substances. In addition, steel structures and steel structures (S structure), heavy steel structures, lightweight steel structures, reinforced concrete structures (RC structures) The present invention may be applied to cutting and dismantling of structures such as steel reinforced concrete structures (SRC structures) and concrete-filled steel pipe structures (CFT structures).
In addition, steel structures, steel structures (S structures), heavy steel structures, lightweight steel structures, reinforced concrete structures (RC structures), steel reinforced concrete structures (SRC structures), concrete filling in fragile structures (earthquakes, secular deterioration, etc.) You may apply to the cutting | disconnection and dismantling of structures, such as a steel pipe structure (CFT structure). Thereby, it is possible to perform cutting or dismantling of a high place or a structure in which the construction work machine cannot approach the cutting portion.

Moreover, in this embodiment, it demonstrated using the crusher 12 as an example of a holding means. However, the present invention is not limited to this, and has a function of holding the cutting target member at the time of cutting and holding the cutting target member after cutting, such as the shape of only the gripping part that does not include the cutting teeth 38A and 38B. Any other shape may be used as long as it is a gripping means.
In the present embodiment, the cutting direction by the cutting device is the vertical direction with respect to the axis line J2 of the steel beam 14. However, the present invention is not limited to this. For example, the cutting direction may be obliquely cut with respect to the axis line J2. . Thereby, for example, by dropping the portion of the steel beam 14 that is left to be cut downward, the steel beam 14 that has been cut off can be suppressed from being dropped.
Further, the axis J2 of the steel beam 14 may be oblique. That is, not only the horizontal member is cut obliquely, but also the inclined steel beam 14 can be cut obliquely.

  Furthermore, the drive arm 16 described in the present embodiment may be any as long as it can move the gripping and cutting device 10 attached to the tip to an arbitrary position. For example, a drive arm attached to an existing steel cutting machine, a drive arm attached to a work device such as a hydraulic excavator type, a drive arm attached to a work device such as an ultra-large building demolition machine, or a mobile crane type Any drive arm that can be operated by the construction work machine, such as a drive arm attached to the construction work machine or the like, may be used.

(Second Embodiment)
A gripping / cutting device 70 according to a second embodiment of the present invention will be described with reference to FIG.
The gripping and cutting device 70 is different from the first embodiment in that a pair of cutting devices 20A and 20B are attached to both side surfaces of the crusher 12 with the crusher 12 interposed therebetween. The difference will be mainly described.

In the gripping and cutting device 70, a pair of cutting devices 20 </ b> A and 20 </ b> B are connected to both side surfaces of the central base portion 64 of the crusher 12 by attachments 18 </ b> A and 18 </ b> B with the crusher 12 interposed therebetween.
That is, one end of the attachment 18A is connected to one side surface 64A of the central base 64 of the crusher 12, and the connection plate 48 of the cutting device 20A is connected to the other end of the attachment 18A. Further, one end of the attachment 18B is coupled to the other side surface 64B of the central base member 64 of the crusher 12 facing the side surface 64A, and the coupling plate 48 of the cutting device 20B is connected to the other end of the attachment 18B. Has been.
Here, the attachments 18A and 18B have the same configuration as the attachment 18 described in the first embodiment, and the cutting devices 20A and 20B have the same configuration as the cutting device 20 described in the first embodiment.

Accordingly, the gripping and cutting device 70 causes the wire saws 28 to travel by the pair of cutting devices 20A and 20B in a state where the steel beam 14 is gripped by the crusher 12, and the steel beams 14 on both sides of the crusher 12 are moved. Can be cut at two places at the same time. Thereby, the efficiency of the dismantling work can be increased.
Although not shown in the figure, in the steel column 66 as well, in a state where the steel column is gripped by the crusher 12, the wire saws 28 are respectively run by the cutting devices 20A and 20B, and the both sides of the crusher 12 are moved. The pillars can be cut simultaneously. Other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

10, 70 Grasp cutting device 12 Crusher (gripping means)
14 Beam (member to be cut)
16 Drive arm 18 Attachment (connecting means)
20 Cutting device 22 Main frame (cutting device)
24 Frame member (cutting device)
26 Subframe (cutting device)
28 Wire saw (cutting device)
48 connection plate (connection member, cutting device)
50 Slide mechanism (cutting device)
66 Column (member to be cut)

Claims (6)

A gripping means that is tiltably attached to the tip of a drive arm that can be swung, tilted, and extended, and grips a member to be cut.
A cutting device connected by the gripping means and the connecting means, and cutting the member to be cut gripped by the gripping means;
A gripping and cutting device. The gripping and cutting apparatus according to claim 1, wherein the connecting means sets the cutting direction of the cutting apparatus to a direction intersecting the axis of the cutting target member in a state where the gripping means grips the cutting target member.   The gripping / cutting device according to claim 1, wherein the cutting device is connected to the distal end side in the longitudinal direction of the drive arm by the connecting means.   The gripping / cutting apparatus according to claim 1 or 2, wherein a pair of the cutting devices are connected to both side surfaces of the gripping means by the connecting means. The cutting device is
A connecting member connected to the connecting means;
A slide mechanism attached to the connecting member;
A frame member slidably attached to the slide mechanism;
A sub-frame fixed to the frame member and attached so that a wire saw for cutting the member to be cut can run;
The holding | grip cutting device of any one of Claims 1-4 which has these. A gripping and cutting method for cutting a member to be cut using the gripping and cutting device according to any one of claims 1 to 5,
Gripping the member to be cut with gripping means attached to the tip of the drive arm;
Cutting the cutting object member gripped by the gripping means with a cutting device;
A gripping and cutting method.

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