JP2007032083A - Attachment for disassembling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment for disassembling for improving working efficiency, and increasing economic efficiency, by repairing a gripping part in a short time by little labor. <P>SOLUTION: The gripping part is divided into an installation part 41 formed in an cutter arm 33 and a gripping piece 43 installed in this installation part 41. The installation part 41 and the gripping piece 43 receive gripping time pressing force by the installation part 41 via the gripping piece 43, and are combined by a recess-projection fitting structure for receiving force in the substantially vertical direction to the opening-closing direction by the installation part 41 via the gripping piece 43. The gripping piece 43 is detachably installed in the installation part 41 by threadedly engaging with a screw hole 48 arranged in the installation part 41 by inserting a bolt 51 into a through-hole 50 arranged in the gripping piece 43. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dismantling attachment attached to a working arm of a scrap dismantling machine for various scraps such as an automobile, and more particularly to a cutter arm having a grip portion at the tip thereof so as to be suitable for dismantling metal scrap.

  In a dismantling machine that dismantles an automobile or the like as a dismantling object, the dismantling object placed on the ground or the like in a self-propelled dismantling machine is held by a holding device, and the dismantling is performed by a dismantling attachment provided at the tip of the working arm. Dismantle things. This dismantling is performed by grasping the object to be disassembled by a gripping portion provided at the tip of the cutter arm and operating the working arm to cut the object to be disassembled or by cutting with a cutter attached to the cutter arm. There exists a thing of patent document 1 as such a demolition machine, for example.

  In the conventional disassembly attachment described in Patent Document 1 and the like, the grip portion is formed by welding a hard material to the tip of the cutter arm.

JP 2004-176536 A

  Attachment for dismantling is a work that grips the object to be disassembled with a strong force at the grip part provided at the tip of the cutter arm, and operates the work arm to tear the object to be disassembled. Wear due to friction with the workpiece. For this reason, if the wear of the gripping portion proceeds, the gripping force decreases, so that it needs to be repaired.

  However, in the conventional dismantling attachment, the grip part is provided by welding, so when repairing, a hard material is welded by overlay welding, or the worn grip part is melted and a new grip part is obtained. Had to be welded. However, such repair work that requires welding is a work that requires a whole day, and there is a problem that it takes time and labor.

  In view of the above-described problems, an object of the present invention is to provide a disassembly attachment that can repair a gripping portion in a short time and with a small amount of labor, and that can achieve improved work efficiency and economy.

The disassembly attachment according to claim 1 is attached to the tip of the working arm of the dismantling machine, and the disassembly attachment is provided with a gripping part of the object to be disassembled at the tip of the openable cutter arm.
The grip part is divided into an attachment part formed on the cutter arm and a grip piece attached to the attachment part,
The mounting portion and the gripping piece receive the pressing force at the time of gripping by the mounting portion through the gripping piece, and receive the force in the direction perpendicular to the opening and closing direction at the mounting portion through the gripping piece. Combined in structure,
The grip piece is detachably attached to the attachment portion by passing a bolt through a through hole provided in the grip piece and screwing into a screw hole provided in the attachment portion.

The disassembly attachment according to claim 2 is the structure according to claim 1,
Forming a concave / convex fitting portion of the grip piece on both side surfaces of the mounting portion, and dividing the grip piece into two pieces,
Attach the two grip pieces from both sides to these uneven fitting parts,
The gripping piece that is fitted and attached to the uneven fitting portion covers the tip of the attachment portion, the surface facing the attachment portion of the counterpart cutter arm and both side surfaces of the attachment portion. .

  In the first aspect of the invention, the gripping piece is attached to the cutter arm by fitting the gripping piece to the concave-convex fitting portion provided in the attachment portion of the cutter arm and fixing it with the bolt. For this reason, when the grip piece is worn, it can be attached by removing the worn grip piece by removing the bolt, fitting the new grip piece into the mounting portion, and fixing it with the bolt. This eliminates the need for conventional build-up welding, fusing of worn gripping parts, or welding of new gripping parts, greatly reducing the time and labor required for repair, and achieving economic efficiency.

  In addition, the gripping piece is combined with the mounting part by concave / convex fitting, and all the large force acting on the gripping piece is received by the mounting part during work, so that no large force acts on the bolt, preventing the bolt from breaking. can do.

  According to the second aspect of the present invention, since the mutually facing surfaces, both side surfaces, and the tip portion of the mounting portion are covered with the gripping pieces that are attached to each mounting portion from both surfaces, the opposing surface, both side surfaces of the mounting portion. Further, wear of the tip portion is prevented, and the life of the cutter arm is extended.

  In addition, since the grip piece is divided into two grip pieces, the grip piece can be reduced in size and weight, and the bolt can also be reduced in size, so that the grip piece can be easily replaced.

  FIG. 1 is a side view showing an example of a demolition machine to which the attachment for disassembly of the present invention is applied, and FIG. 2 is a side view showing an embodiment of the attachment for disassembly of the present invention. As shown in FIG. 1, the dismantling machine has a revolving unit 3 installed on a traveling unit 1 via a revolving device 2, a power unit 4 and a cab 5 are mounted on the revolving unit 3, and a work arm 6 is attached. It becomes. In the present embodiment, the working arm 6 has a multi-joint structure, and is normally attached to the first arm 7, which is called a boom, the hydraulic cylinder 8 and the tip of the first arm 7. A second arm 9 called a normal arm and a hydraulic cylinder 10 for rotating the second arm 9 are provided.

  Reference numeral 11 denotes an attachment for disassembly, and the attachment 11 for disassembly is attached to the second arm 9 so as to be rotatable about a pin 12 by a hydraulic cylinder 13 via an arm link 14 and an attachment link 15.

  On the frame of the traveling body 1, a holding frame 16 that suppresses scraps of automobiles and the like at the time of disassembly is attached to be able to move up and down by a hydraulic cylinder 17.

  Reference numeral 26 denotes a bracket of the disassembly attachment 11. The bracket 26 is connected to the second arm 9 by the pin 12 and attached to the attachment link 15 by a pin 27.

  Reference numeral 29 denotes a turning device with a turning motor 30 attached to the bracket 26. Reference numeral 31 denotes a frame attached to the swing body of the swing device 29. The frame 31 is provided with a fixed cutter arm 33, and a movable cutter arm 36 that can be rotated around a pin 34 by a hydraulic cylinder 35, that is, can be opened and closed with respect to the fixed cutter arm 33. Mounted. Note that one of the cutter arms is not fixed and the other is movable, but both may be movable. Reference numerals 37 and 38 denote cutters attached to the cutter arms 33 and 36, respectively.

  Reference numerals 41 and 42 denote gripping piece attachment portions formed at the tips of the cutter arms 33 and 36, and reference numerals 43 and 44 denote gripping pieces attached to the attachment portions 41 and 42, respectively. These grip pieces 43 and 44 form a ridge 49 (see FIG. 4). When the cutter arms 33 and 36 are closed, one ridge of the grip pieces 43 and 44 is between the other ridges. Configured to face each other.

  FIG. 3 shows the structure of the mounting portions 43 and 44 as a representative one mounting portion 43, and the other mounting portion 44 has the same structure. FIG. 3A is a front view showing the opposing surfaces of the cutter arms, and FIG. 3B is a side view thereof. In FIG. 3, 45 is a mounting seat for mounting the cutter 37 with bolts (not shown).

  When carrying out the present invention, the grip piece 43 may be attached to one side of the attachment portion 41. However, in this embodiment, as shown in FIGS. 4 (A) and 4 (B), both sides of the attachment portion 41 are provided. An example of attaching divided grip pieces 43A and 43B is shown.

  As shown in FIG. 3, recesses 46 are provided on both side surfaces of the attachment portion 41 so that the opposing surface and the lower portion of the cutter arm are open. The concave portions 46a are formed deeper in the upper portions of the concave portions 46. A plurality of screw holes 48 for attaching the grip pieces 43A and 43B are provided on the bottom surfaces of these recesses 46.

  5 and 6 are views showing the grip pieces 43A and 43B shown in FIG. 4, respectively. 5 and 6A are views of the gripping pieces 43A and 43B as viewed from the mounting surface side, FIG. 5B is a front view of the cutter arm as viewed from the opposite surface side, and FIG. The figure seen from the surface side, (D) is AA, DD sectional drawing of the same (C), (E) is BB, EE sectional drawing of the same (C), respectively, (F) is CC and FF sectional drawing of the same (C), respectively.

  As shown in FIGS. 5 and 6, the grip pieces 43 </ b> A and 43 </ b> B each have a structure that fits into the recess 46. That is, these grip pieces 43 </ b> A and 43 </ b> B have a convex portion 47 that fits into a concave portion 46 a formed deeper on the upper portion of the concave portion 46.

  Each gripping piece 43A, 43B is in contact with a surface b that contacts the bottom surface a of the recess 46 (see FIG. 4), a surface d that contacts the lower end surface c of the mounting portion 41, and a front surface e of the mounting portion 41. A surface f to be brought into contact with, and an R-shaped upper contact surface j to be brought into contact with the R-shaped lower surface i of the upper protruding portion of the front surface e. Further, the back surface g of the grip pieces 43 </ b> A and 43 </ b> B is a surface that comes into contact with the inner wall h of the recess 46. A ridge 49 is formed on the front surface of each gripping piece 43A, 43B.

  Reference numeral 50 denotes a through hole into which the bolt 51 is inserted. The through holes 50 are provided at positions corresponding to the screw holes 48 provided in the recess 46. Each through hole 50 is formed with an enlarged portion 50 a that accommodates the head of the bolt 51.

  As shown in FIG. 4, these gripping pieces 43 </ b> A and 43 </ b> B fit the convex portions 47 of the gripping pieces 43 </ b> A and 43 </ b> B into the deep concave portions 46 a on the upper portion of the concave portions 46, and the surfaces a, c, e, h, The surface b, d, f, g, j of the grip pieces 43A, 43B is applied to i, and the concave and convex portions are fitted into the concave portions 46, the bolts 51 are inserted into the through holes 50, and screwed into the screw holes 48 of the mounting portion 41. And install. In this attached state, the protruding strips 49 of the gripping pieces 43A and 43B are attached so as to be continuous, and the gripping pieces 43A and 43B cover the tip of the mounting portion 41, the front surface, and both side surfaces of the mounting portion.

  In this configuration, the grip pieces 43A and 43B are fitted to the concave and convex fitting portions provided in the mounting portion 41 and fixed by the bolts 51, so that the grip pieces 43A and 43B are attached to the cutter arm 33. When 43A and 43B are worn, the grip pieces 43A and 43B whose ridges 49 and the like are worn are removed by removing the bolt 51, and the new grip pieces 43A and 43B are fitted to the mounting portion 41 and fixed by the bolt 51. Can be installed. This eliminates the need for conventional build-up welding, fusing of worn gripping parts, and welding of new gripping parts, reducing the time and labor required for repair, and achieving economic efficiency.

  In addition, the gripping pieces 43A and 43B are combined with the mounting portion 41 by concave / convex fitting so that all the large forces acting on the gripping pieces 43A and 43B during operation are received by the mounting portion 41. It does not act and can prevent damage such as broken bolts.

  More specifically, when the convex portions 47 of the grip pieces 43A and 43B are fitted into the deep concave portion 46a of the mounting portion 41, the grip pieces 43A and 43B are vertically moved (substantially perpendicular to the opening and closing direction of the cutter arm). Movement is regulated. For this reason, the attachment part 41 receives a reaction force when the object to be disassembled is grabbed by the gripping pieces 43 and 44 and pulled up, and a reaction force when the grasping pieces 43A and 43B are pierced and broken by the object to be disassembled. be able to.

  Further, the upper parts of the grip pieces 43A and 43B are fitted into the recesses 46a so that the upper surfaces k of the grip pieces 43A and 43B are in contact with the upper inner wall surface m of the recesses 46a and the contact of the surfaces i and j. 4 is prevented from twisting in the direction of arrow R in FIG.

  Moreover, the reaction force at the time of grasping the object to be disassembled can be received by the attachment portion 42 by the abutment of the surfaces e and f and g and h. For these reasons, the reaction force acting on the grip pieces 43A and 43B does not act in the direction in which the bolt 51 is broken, and the bolt 51 is prevented from being broken.

  Further, in the present embodiment, the gripping piece to be attached to each cutter arm is divided into two, and the opposing surface (front surface), both side surfaces, and the tip of the attachment portion 41 are attached to each attachment portion 41 from both sides. Since it is structured to be covered by the grip pieces 43A and 43B to be attached (the same applies to the attachment portion 42), wear of the opposing surface, both side surfaces and the tip portion of the attachment portion 41 is prevented, and the life of the cutter arms 33 and 36 is extended. The Further, since the grip piece 43 is divided into two grip pieces 43A and 43B, the grip pieces 43A and 43B can be reduced in size and weight to, for example, about 5 kg, and the bolt 51 can also be reduced in size, so that the grip pieces 43A and 43B can be replaced. Becomes easy.

It is a side view which shows an example of the demolition machine to which the attachment for demolition of this invention is applied. It is a side view which shows one Embodiment of the attachment for dismantling of this invention. (A), (B) is the front view and side view which respectively show the attachment part of the grip piece of this Embodiment. (A), (B) is the front view and side view which respectively show the state which attached the grip piece to the attachment part of this Embodiment. In this embodiment, one of a pair of grip pieces attached to one attachment portion is shown, (A) is a view of the grip piece as viewed from the attachment surface side, (B) is a front view, (C ) Is a view seen from the surface side appearing on the outside, (D) is a cross-sectional view taken along the line AA of (C), (E) is a cross-sectional view taken along the line BB of (C), and (F) is a cross-sectional view taken along the line C-- of (C). It is C sectional drawing. In this Embodiment, the other of a pair of grip pieces attached to one attachment part is shown, (A) is the figure which looked at the grip piece from the attachment surface side, (B) is a front view, (C ) Is a diagram viewed from the surface side appearing on the outside, (D) is a sectional view taken along the line DD in (C), (E) is a sectional view taken along the line EE in (C), and (F) is a sectional view taken along the line F- in (C). It is F sectional drawing.

Explanation of symbols

1: traveling body, 2: turning device, 3: turning body, 4: power unit, 5: cab, 6: working arm, 7: first arm, 8: hydraulic cylinder, 9: second arm, 10: Hydraulic cylinder, 11: Attachment for disassembly, 12: Pin, 13: Hydraulic cylinder, 14: Arm link, 15: Attachment link, 16: Holding frame, 17: Hydraulic cylinder, 26: Bracket, 29: Swivel device 30: slewing motor, 31: frame, 33, 36: cutter arm, 35: hydraulic cylinder, 37, 38: cutter, 41, 42: mounting part, 43, 43A, 43B, 44: gripping piece, 45: cutter Mounting seat, 46: recess, 46a: deep recess, 47: protrusion, 48: screw hole, 49: protrusion, 50: through hole, 51: bolt

Claims (2)

In the dismantling attachment attached to the tip of the work arm of the dismantling machine and provided with the gripping part of the object to be disassembled at the tip of the openable cutter arm,
The grip part is divided into an attachment part formed on the cutter arm and a grip piece attached to the attachment part,
The mounting portion and the gripping piece receive the pressing force at the time of gripping by the mounting portion through the gripping piece, and receive the force in the direction perpendicular to the opening and closing direction at the mounting portion through the gripping piece. Combined in structure,
An attachment for dismantling characterized in that the grip piece is detachably attached to the attachment portion by passing a bolt through a through-hole provided in the grip piece and screwing into a screw hole provided in the attachment portion. In the attachment for dismantling of Claim 1,
Forming a concave / convex fitting portion of the grip piece on both side surfaces of the mounting portion, and dividing the grip piece into two pieces,
Attach the two grip pieces from both sides to these uneven fitting parts,
The gripping piece that is fitted and attached to the uneven fitting portion covers the tip of the attachment portion, the surface facing the attachment portion of the counterpart cutter arm and both side surfaces of the attachment portion. Attachment for dismantling.

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