JP2005105765A - Block transfer attachment and block transfer work machine - Google Patents

Abstract

The present invention provides a block transfer attachment and a block transfer work machine that can be transferred without damaging the block.
A block transfer attachment 7 is attached to the tip of an articulated arm 6 of a self-propelled working machine. The attachment 7 includes a bracket 10 attached to the tip of the articulated arm 6, a fork 11 attached to the lower part of the bracket 10, a side stopper 13 attached to the left and right of the bracket 10 to support the left and right of the block 12, and the block 12. And a stay 15 having a pawl 14 serving as a retaining means and a rotation preventing means for the block 12. The block 12 can be held by scooping the block 12 with the hawk 11 by sliding the attachment 7, and the stay 15 can prevent the slide 12 from sliding forward, thereby avoiding damage to the block 12.
[Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to an attachment for transferring a concrete block such as a river floor block or a wooden block and a self-propelled working machine having the attachment attached to an articulated arm.

  In order to prevent the rocks and sand from flowing out and to protect and protect the aquatic animals, the riverbed is laid with concrete protective floor blocks. When such a floor protection block is laid on the downstream side of the weir, it is necessary to remove one end of the weir and return it to the original position again. Conventionally, such transfer of the floor protection block has been performed using a hydraulic excavator having a backhoe bucket as described in Patent Document 1, for example.

Japanese Patent Laid-Open No. 9-60046

  However, when digging up the floor with a hydraulic excavator, the floor is often damaged by the bucket and cannot be reused, resulting in industrial waste, crushing treatment, and high transportation costs There was a point.

  In view of the above problems, an object of the present invention is to provide a block transfer attachment and a block transfer work machine that can be transferred without damaging the block.

(1) The block transfer attachment of the present invention is a block transfer attachment that is rotatably attached to the tip of the articulated arm of the self-propelled working machine,
A bracket attached to the tip of the articulated arm;
A fork attached to the bottom of the bracket;
Side stoppers attached to the left and right sides of the bracket and supporting the left and right sides of the block are provided.

(2) Moreover, the attachment for block transfer of this invention is the said (1),
A stay having a retaining means for removing the block is attached to the bracket so as to be vertically displaceable.

(3) Moreover, the attachment for block transfer of this invention is the said (1) or (2),
The side stopper is attached to the bracket so that the left and right positions can be adjusted.

(4) Moreover, the attachment for block transfer of this invention is either in said (1) to (3),
The stay is configured to be adjustable in length.

(5) Moreover, the attachment for block transfer of this invention is either in said (1) to (4),
The hawk is configured to be divided into a plurality of hawk elements, and the interval between the hawk elements is adjustable.

(6) Moreover, the attachment for block transfer of this invention is either in said (1) to (5),
A claw for preventing the block from coming off and preventing rotation of the block is attached to the tip of the stay by pivotally attaching the middle part of the claw so as to be rotatable up and down.

(7) Moreover, the attachment for block transfer of this invention is either in said (1) to (6),
A shock-absorbing material that alleviates an impact at the time of block contact is attached to the front surface of the bracket or / and the back plate of the side stopper.

  (8) The block transfer working machine according to the present invention has the block transfer attachment according to any one of (1) to (7) attached to the tip of the articulated arm of the self-propelled work machine. Features.

  If the attachment for block transfer of the present invention is attached to the tip of a multi-joint arm of a work machine, the fork is inserted between the block and the ground by operating the multi-joint arm, and left and right by left and right side stoppers. The block can be prevented from slipping out, and the block can be locked by the stay to prevent forward sliding and horizontal rotation, and can be held on the attachment. If such a block is held, the hawk, the side stopper, and the stay do not act on the block with a strong force, so that the block can be prevented from being damaged. For this reason, the situation where a block is processed as industrial waste can be avoided, and the cost which a transfer operation requires can be reduced.

  FIG. 1 is a plan view showing an embodiment of a block transfer working machine according to the present invention, and FIG. 2 is a side view thereof. This working machine uses a hydraulic excavator as a base machine. 1 and 2, reference numeral 1 denotes a crawler type traveling body, and 2 a revolving body installed on the traveling body 1 via a revolving device 3, on the revolving body 2, a cab 4 and a hydraulic power unit 5. Etc. are mounted to constitute the work implement main body. An articulated arm 6 is attached to the swing body 2. The articulated arm 6 includes a boom 6a attached to the swinging body 2 by a boom cylinder 6b so as to be raised and lowered, an arm 6c rotatably attached to the tip of the boom 6a by an arm cylinder 6d, and a bucket for rotating the bucket. It consists of a cylinder 6e, an arm link 6f, and a bucket link 6g.

  A block transfer attachment 7 is rotatably attached to the arm 6c. The attachment 7 is attached to the tip of the articulated arm 6 so as to be rotatable around a pin 8 and is attached to the bucket link 6g by being connected to the bucket link 6g by a pin 9, and is attached to a lower portion of the bracket 10. Hawk 11, side stoppers 13 that are attached to the left and right of bracket 10 to support the left and right sides of floor protection block 12, and are attached to the top of block 12 so as to be displaceable in the vertical direction. And a stay 15 having a claw 14 as movement preventing means.

  3, 4, and 5 are a plan view, a front view, and a side view, respectively, showing an embodiment of the attachment 7, and FIG. 6 is a side cross-sectional view showing the attachment structure of the hawk 11 and the stay 15. The fork 11 is composed of three fork elements 11a to 11c, and each of the fork elements 11a to 11c is provided with a gripping portion 17 slidably along a rail 16 provided on the upper and lower surfaces of the bracket 10, The gripping portion 17 is screwed into a screw hole 19 provided at a predetermined interval in the rail 16 with a bolt 20 inserted through a hole provided in the gripping portion 17, so that the right and left positions are matched to the size of the block 12. The fork elements 11a and 11c are adjusted to be fixed to the bracket 10 by adjusting the positions thereof.

  In addition, the left and right side stoppers 13 are configured so that the block 12 can be easily inserted into the attachment 7 by forming the front end portion 13a in a shape that opens to the left and right. Each side stopper 13 is provided with a gripping portion 21 slidably along a rail 16 provided at the top and bottom of the bracket 10 in the same manner as the fork 10. Each gripping portion 21 is provided on the gripping portion 21. A bolt 22 inserted through the hole is screwed into a screw hole 23 provided at a predetermined interval in the rail 16, thereby adjusting the position of the left and right side stoppers 13 to a position that matches the size of the block 12, and a bracket. 10 so that it can be fixed to 10.

  As shown in FIG. 6, the stay 15 is attached to the bracket 10 so as to be vertically displaceable by rotating around the pin 24. Reference numeral 25 denotes a stopper provided on the bracket 10. The stopper 25 prevents the stay 15 from falling too low when gripping the block 12, and abuts the tail end of the stay 15 to keep the stay 15 in a horizontal position. It is something to touch.

  The stay 15 has a proximal end portion 15a, a pipe 15b provided on the distal end side thereof, and a distal end side portion 15c slidably fitted to the pipe 15c. The pipe 15b and the distal end side portion 15c include By providing pin holes 26 and 27 at equal intervals and inserting the pins 29 together with these pin holes 26 and 27, the length of the stay 15 can be adjusted to the length matching the length of the block 12. Yes.

  The claw 14 is attached to the tip of the stay 15 so as to be rotatable about a pin 30. The cross-sectional shape of the claw 14 has a U-shaped cross-sectional shape with an upper surface opening, and has an attachment frame 32 of a fixing pin 31 for fixing the claw 12 at a retracted position (position in FIG. 8) on one side surface thereof. As shown in FIG. 7, the fixing pin 31 is slidably inserted into the hole 32 b of the inner plate 32 a laid between the front and rear plates 32 c and 32 d of the mounting frame 32, and is inserted into the inner plate 32 a and the fixing pin 31. The fixing pin 31 is biased toward the stay 15 by a coil spring 33 provided between the provided spring receiver 31a. Further, the fixing pin 31 has a handle 31b at the outer end, and the fixing pin 31 does not restrain the claw 14 in a state where the handle 31b is locked to the tips of the front and rear plates 32c and 32d of the mounting frame 32. The stopper 12b is fixed to the upper surface of the rear end of the claw 14 by its own weight (a spring may be used) of the claw 14 so that the stopper 12b is in contact with the upper surface of the stay 15. The rear end surface 14c that locks the portion 12a is substantially perpendicular to the stay 15 (θ≈90 degrees), and the claw 14 is configured to exhibit a function as a stopper.

  FIG. 8 shows a state in which the claw 14 is rotated to the retracted position. That is, the posture in which the bottom plate 14a of the claw 14 is in contact with the bottom surface of the distal end side portion 15c of the stay 15 is a retracted posture, and at this time, the fixing pin 31 is provided at the distal end side portion 15c of the stay 15. The pin holes 34a of the retracting bracket 34 face each other. At this time, when the handle 31b of the fixing pin 31 is turned and removed from the front ends of the front and rear plates 32b and 32c of the mounting frame 32, the fixing pin 31 is pushed out by the force of the coil spring 33 and inserted into the pin hole 34a. Is fixed in a retracted posture (a posture in which the claw 14a is parallel to the stay 15).

  As shown in FIGS. 3 and 5, the back plate 13b of the side stopper 13 has a rubber for alleviating the impact when the back surface of the block 12 abuts when the block 12 is gripped by the attachment 7. A cushioning material 35 made of a plate is attached. FIG. 9 is a view showing the mounting structure. A mounting seat 36 is fixed to the back plate 13b with bolts 37, and a bolt 39 inserted from the back into the mounting seat 36 is screwed into a nut 40 embedded in the cushioning material 35. As a result, the cushioning material 35 is attached to the back plate 13b. Depending on the structure of the block 12, the cushioning material 35 may be provided only on the bracket 10 or on the bracket 10 and the side stopper 13.

  When transferring the block 12 using this working machine, as shown in FIGS. 1 and 2, the direction of the block 12 and the direction of the articulated arm 6 are matched, and the articulated arm 6 is operated to attach the attachment 7. The fork 11 is moved forward along the river bed to scoop the block 12, the block 12 is placed on the fork 11, and its end is sandwiched between the side stoppers 13 and 13. Thus, when the attachment 7 is slid, the handle 31b of the fixing pin 31 is engaged with the front and rear plates 32c and 32d of the mounting frame 32 as shown in FIG. The claw 14 is placed in an inclined posture in which the front part is raised because the rear part is heavier than the pin 30, and the claw 14 comes into contact with the upper surface of the block 12 by the advancement of the attachment 7. The front part of the claw 14 acts like a bent part at the front end of the heel, and the claw 14 rotates around the pin 30 to the posture shown in FIG. Twelve brackets 10 are allowed to enter the bracket 10 direction.

  When the attachment 7 is slid with respect to the block 12, the rear end of the stay 15 abuts against the stopper 25 to keep the stay 15 in a horizontal posture, so that the tip of the claw 14 has an X-shaped end portion 12a of the block 12a. Occurrence of a situation where the slide does not advance smoothly by being held on the back is prevented.

  In a posture in which the rear end of the block 12 abuts against the cushioning material 35 due to the slide of the attachment 7 with respect to the block 12, as shown in FIGS. As a result, the claw 14 is locked so as not to slide down the block 12 forward, and the claw 14 fits between the portions 12a. Horizontal rotation is prevented, whereby the block 12 is stably held.

  After the block 12 is held by the attachment 7 in this way, the block 12 is lifted by operating the articulated arm 6 and transferred to a predetermined place by turning and traveling, and lowered to the ground or a truck bed. The handle 31b is rotated, the fixing pin 31 is inserted into the pin hole 34a of the bracket 34, the pawl 14 is placed along the stay 15, the restriction of the block 12 by the pawl 14 is released, and the attachment 7 is horizontally operated by operating the articulated arm 6. The block 12 is removed by moving backward. Next, when the new block 12 is transferred from the river bed, the fixing pin 31 is removed from the pin hole 34a of the bracket 34, and the claw 14 is rotated freely to perform the same operation as described above. The same operation is performed when the block 12 is returned from the storage location or the truck bed to the original position.

  In such a series of operations, an excessive force does not act on the block 12 as in the case of working with a bucket, so that damage to the block 12 as with a conventional hydraulic excavator having a backhoe bucket is avoided. Can be avoided. Therefore, the problem of processing as industrial waste due to breakage of the block 12 can be avoided or drastically reduced, and an increase in work cost can be prevented.

  In the present embodiment, since the side stopper 13 is attached to the bracket 10 so that the left and right positions can be adjusted, the blocks 12 having different sizes can be transferred using the same attachment. Further, since the stay 15 is configured to be adjustable in length, it can be similarly applied to the blocks 12 having different sizes. Further, since the interval between the respective hawk element bodies of the hawk 11 is configured to be adjustable, it can be similarly applied to the blocks 12 having different sizes.

  In addition, the stay 15 may be prevented from being locked or rotated by using a hydraulic cylinder, a pneumatic cylinder, an electromagnet, or the like to prevent the block 12 from being locked or rotated, as in the present embodiment. At the tip, a claw 14 for preventing the block 12 from coming off and preventing rotation is attached by pivotally attaching the middle part of the claw 14 so that the claw 14 can be pivoted up and down. By configuring so as to be automatically locked in a state exceeding (or the portion 12a), automatic locking is possible without providing hydraulic or pneumatic piping and cylinders, or electric piping or solenoids.

  In the present embodiment, since the shock absorbing material 35 for reducing the impact is attached to the front surface of the side stopper 13, damage to the block 12 can be prevented even if the movement of the attachment 7 is accelerated. As described above, the cushioning material 35 may be provided on the bracket 10 side.

It is a top view which shows one Embodiment of the working machine for block transfer by this invention. It is a side view of FIG. It is a top view which shows one Embodiment of the attachment for block transfer by this invention. It is a side view which abbreviate | omits a part of stay and shows the attachment of this Embodiment. It is a front view which abbreviate | omits a stay and shows the attachment of this Embodiment. It is side surface sectional drawing which shows the attachment structure of the attachment hawk of this Embodiment. (A), (B) is the top view and side view which respectively show the nail | claw of the front-end | tip of the stay of this Embodiment in the rotation free state of a nail | claw. (A), (B) is the top view and side view which respectively show the nail | claw of the front-end | tip of the stay of this Embodiment in the state which fixed the nail | claw to the retracted position. It is side surface sectional drawing which shows the attachment structure of the shock absorbing material of this Embodiment.

Explanation of symbols

1: traveling body, 2: turning body, 3: turning device, 4: cab, 5: hydraulic power unit, 6: articulated arm, 7: attachment for block transfer, 10: bracket, 11: fork, 12: block, 13: Side stopper, 14: Claw, 15: Stay, 15a: Base end side part, 15b: Pipe, 15c: Tip side part, 16: Rail, 17: Holding part, 19: Screw, 20: Bolt, 21: Holding Part, 22: bolt, 23: screw hole, 24: pin, 25: stopper, 26, 27: pin hole, 29, 30: pin, 31: fixed pin, 32: mounting frame, 33: coil spring, 34: bracket 34a: pin hole, 35: cushioning material, 36: mounting seat, 37: bolt, 39: bolt, 40: nut

Claims (8)

A block transfer attachment that is pivotally attached to the tip of a multi-joint arm of a self-propelled working machine,
A bracket attached to the tip of the articulated arm;
A fork attached to the bottom of the bracket;
A block transfer attachment, comprising side stoppers attached to the left and right of the bracket and supporting the left and right of the block. In the block transfer attachment according to claim 1,
A block transfer attachment, wherein a stay having a retaining means for removing the block is attached to the bracket so as to be vertically displaceable. In the block transfer attachment according to claim 1 or 2,
A block transfer attachment, wherein the side stopper is attached to the bracket so as to be adjustable in a lateral direction. In the block transfer attachment according to any one of claims 1 to 3,
A block transfer attachment, wherein the stay is configured to be adjustable in length. In the block transfer attachment according to any one of claims 1 to 4,
A block transfer attachment, wherein the fork is configured to be divided into a plurality of fork elements and the interval between the fork elements is adjustable. In the block transfer attachment according to any one of claims 1 to 5,
The block transfer attachment is characterized in that the retaining means is a claw member provided at a tip of the stay and pivotally attached to an intermediate portion so as to be rotatable up and down. In the block transfer attachment according to any one of claims 1 to 6,
A block transfer attachment characterized in that a cushioning material is attached to the front surface of the bracket or / and the back plate of the side stopper to alleviate an impact at the time of block contact. A block transfer working machine comprising: a block transfer attachment according to any one of claims 1 to 7 attached to a tip of a multi-joint arm of a self-propelled work machine.

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