JP4705809B2 - Attachment mounting device for work equipment - Google Patents

Description

The present invention relates to a work machine attachment mounting apparatus for attaching a work attachment to a work machine , for example , a crusher that performs civil engineering work and dismantling work.

When attaching a crusher as a work attachment to the tip of a hydraulic excavator arm or backhoe arm (hereinafter collectively referred to as an arm), which is a work machine , conventionally, the attachment bracket on the attachment side is pin-connected to the arm tip. It is fixed by. Therefore, for example, when converting a bucket that operates in the forward direction to perform a work that operates in the backward direction and performs a scraping operation, the pin is removed and the direction of the bucket is changed 180 degrees, and the mounting bracket and arm The pin hole is aligned and then re-pinned.
Not found in particular.

  As described above, the attachment is attached to the arm of the work machine by being pin-coupled, but is attached in a fixed state in which the attachment cannot be displaced in the horizontal direction or the vertical direction. For this reason, in order to position the attachment on the work target in a vertical state, it is necessary to correct the posture of the work machine itself in the vertical direction, which requires a long time. In some cases, it is difficult to correct.

  Further, when changing the direction in which the attachment operates, the pin is once removed and the direction of the attachment is changed 180 degrees in the vertical direction, the pin holes of the mounting bracket and the arm are aligned, and the pins are coupled again. For this reason, there is a disadvantage that the alignment of the pin holes is troublesome and requires time, and since the attachment is a heavy object, there is a problem that this alignment operation is dangerous.

  The present invention has been made in view of the above-mentioned drawbacks of the prior art. The attachment can be easily and efficiently attached to and detached from the work machine, and the workability can be improved because the orientation of the attachment can be easily corrected. It is an object of the present invention to provide an attachment attachment device for a work machine that can easily and safely change the direction of operation by changing the direction of the attachment.

The means of the present invention configured to solve the above-described problem is an attachment mounting device for a work machine that attaches an attachment to the arm tip of the work machine, and a mounting plate that attaches the attachment to one side surface; A connecting bolt provided so as to be pivotable in the lateral direction by inserting a boss having a base end of the bolt body fixedly attached to a flanged support tube inserted into a pair of brackets erected on the other side of the mounting plate A connecting pin that is detachably inserted into the mounting plate in a state of being inserted into the boss of the connecting bolt, and a mounting bracket that is connected to the arm tip of the work machine on the outer surface, and the connecting bolt is inserted together are fastened by a nut, the connection pin by consist coupling body and which is detachably connected to the mounting plate, the attachment and swivelably relative to the working machine arm, and the communication It lies in the rotatably supported in the longitudinal direction around the bolt.

Since the present invention is configured as described above, the following effects are obtained.
(1) Since the attachment plate for attaching the attachment to the arm of the work implement can be swung horizontally, the attachment is directed perpendicular to the object even when the work implement is oblique to the object. Can do. Therefore, time and labor for correcting the posture of the work machine can be saved, and work efficiency can be improved.
(2) Since the attachment can be rotated in the vertical direction with respect to the arm by using the attachment mounting device, the operation direction of the attachment can be easily and safely changed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a crusher 1 as an attachment attached to the arm tip of a working machine . Reference numeral 2 denotes a fixed jaw body constituting the crusher 1, and the fixed jaw body 2 includes a support portion 3A and a fixed jaw portion 3B protruding laterally from the support portion 3A, and has a substantially inverted L shape in a side view. A pair of fixed plates 3 and 3 are provided on the front and rear of the paper surface, and each fixed jaw 3B is provided with a lower cutter blade 3C facing upward.

Reference numeral 4 denotes a movable jaw body that abuts on the fixed jaw body so as to be rotatable. The movable jaw body 4 is provided with an upper cutter blade 4A that meshes with the lower cutter blade 3C downward. The movable jaw body 4 and the fixed jaw body 1 are connected by a connecting pin 5, and the movable jaw body 4 is rotatable by interposing a hydraulic cylinder 6. The crusher having such a configuration drives the hydraulic cylinder 6 to rotate the movable jaw 4 in the direction indicated by arrows in the direction of arrow B in relation to the fixed jaw 1, thereby providing a lower cutter blade provided on the fixed jaw 1. The concrete structure is crushed by 3C and the upper cutter blade 4A provided on the movable jaw body 4, and the rebar is bent or cut.

  Next, FIG. 2 thru | or FIG. 4 shows the attachment attachment apparatus which attaches the working attachment containing the crusher mentioned above to the arm of a working machine. In the figure, reference numeral 21 denotes an attachment mounting device (hereinafter simply referred to as a mounting device 21). Reference numeral 22 denotes a mounting plate constituting the mounting device 21. The mounting plate 22 is formed of a metal rectangular flat plate, and is provided with a plate main body 23 for fixing an attachment to one side surface 23A, and projectingly spaced apart from the other side surface 23B of the plate main body 23 in the longitudinal direction. It is comprised from a pair of pin support body 24 and 24 which has the pin hole 24A of the axis.

Reference numerals 25 and 25 denote a pair of brackets which are positioned between the pin supports 24 and 24 and are erected substantially at the center of the mounting plate 22. Each bracket 25 has a fitting hole. Reference numeral 26 denotes a flanged support cylinder inserted into the fitting holes of the pair of brackets 25, 25. The flanged support cylinder 26 has a flange 26A fixed to the bracket 25 on one side by fixing screws 27, 27. Reference numeral 28 denotes a connecting bolt supported by the brackets 25 and 25 by inserting the hooked support cylinder 26. The connecting bolt 28 has a boss 28B into which the hooked support cylinder 26 is inserted into the base end of the bolt body 28A. It is fixed, and the connecting bolt 28 is swingable in two directions. A fastening nut 29 is screwed onto the connecting bolt 28.

  Reference numeral 30 denotes a connecting pin that is detachably inserted into the pair of pin support members 24, 24 and the flanged support cylinder 26, and a retaining flange 30A is provided on the upper end side of the connecting pin 30, and on the lower end side. Is provided with a pin insertion hole 30B for inserting a retaining pin 31 made of a split pin.

  On the other hand, 32 is a connecting body connected to the mounting plate 22, 33 is a connecting plate constituting the connecting body 32 and formed substantially in the same shape as the mounting plate 22, and a pair of mounting brackets 34 on the outer surface 33 A of the connecting plate 33. , 34 are erected, and a bolt through hole through which the connecting bolt 28 is inserted is formed in the center.

  Reference numeral 35 denotes a cover constituting the connecting body 32 together with the connecting plate 33. The cover 35 protrudes and is fixed to the opposite side of the mounting bracket 34 along the outer edge of the mounting plate 33, and covers both end side portions 35A and 35A covering both ends in the longitudinal direction of the cover 35 and both sides in the width direction. The side plate portions 35B and 35B are formed, and each end plate portion 35A has a pin hole 35C (only one is shown) through which the connecting pin 30 is inserted. The cover 35 is inserted into the bolt through hole, the fastening nut 29 is screwed into the cover 35, and the connecting pin 30 is inserted from the pin hole 35C to the flanged support cylinder 26, whereby the connecting body 32 is attached. The plate 22 is pivotably connected.

  The attachment attachment device 21 according to the present embodiment has the above-described configuration, and is used when attaching the attachment to a tip such as an arm of a work machine. Since the attachment device 21 allows the coupling body 32 to swing in two directions with respect to the attachment plate 22, even if the work machine is in an oblique direction with respect to a work target such as a concrete wall, for example. The attachment can be brought into perpendicular contact with the work object by the swing function of the attachment device 21. Conventionally, in such a case, since it was performed while correcting the direction of the work machine, it took time for correction, and there were cases where correction was difficult, but the mounting device 21 according to the present embodiment is By using it, it is possible to easily bring the attachment into contact with the work object vertically in a short time, and it is possible to reliably align the attachment with the work position.

  In addition, when changing the work direction of the attachment during work, for example, when changing the attachment in the vertical direction by 180 degrees, the attachment has been once removed from the arm or the like in the past, but according to the present embodiment, the connecting pin 30 It is possible to easily change the orientation of the attachment by simply rotating the mounting plate 22 about 180 degrees around the connecting bolt 28. Moreover, since the mounting plate 22 is supported by the connecting body 32 by the connecting bolt 28, these operations can be performed safely.

It is a side view of the crusher as an attachment. It is a top view of an attachment attachment device. It is an external appearance perspective view of an attachment mounting apparatus. It is a perspective view which shows the structure of a mounting plate, and a connection pin.

1 Crusher (attachment)
21 Attachment mounting device 22 Mounting plate 28 Connecting bolt 29 Fastening nut 30 Connecting pin 32 Connecting body 34 Mounting bracket

Claims (1)

An attachment attachment device for a work machine that attaches an attachment to an arm tip of a work machine, and is fitted into a mounting plate that attaches the attachment to one side and a pair of brackets that are erected on the other side of the mounting plate A connecting bolt provided so as to be able to turn in the lateral direction by inserting a boss with the base end of the bolt body fixedly inserted into the brazed support cylinder, and inserted into the mounting plate in a state of being inserted through the boss of the connecting bolt. A connection pin that is removably inserted, and a mounting bracket that is connected to the arm tip of the working machine are provided on the outer surface, and the connection bolt is inserted and fastened by a nut, and can be attached to and detached from the mounting plate by the connection pin. consists coupling body and coupled to, Atta working machine the working machine the attachment swivelably relative to the arm, and rotatably supported in a vertical direction around the connecting bolt Chimento mounting device.

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