JP5587753B2 - Crawler belt disassembly suspension - Google Patents

Description

  The present invention relates to a crawler belt disassembly suspension used when disassembling and transporting a crawler constituting a lower traveling body of a large construction machine such as a crawler crane.

  When transporting a large construction machine such as a crawler crane, because it is restricted in terms of mass, width, height, etc. when traveling on the road, it travels downward from the machine body consisting of the lower traveling body and upper revolving body of the construction machine. It is necessary to disassemble and transport crawlers on the left and right sides of the body. In particular, in the case of an extremely large construction machine in which the mass of the crawler exceeds the limit value, it is necessary to further disassemble the crawler.

  In view of this, a disassembly suspending tool for removing a part of the crawler belt of the crawler from the frame has been proposed. In JP 2009-173427 A (Patent Document 1), a support frame having two main members extending in parallel corresponding to both ends of the shoe on the upper roller side portion of the crawler belt, and each main material of the support frame There has been proposed a crawler belt disassembly suspension provided with a plurality of hooking ropes, each of which is hooked on one end of a shoe, and a lifting ring for a lifting rope for lifting a support frame with a crane.

JP 2009-173427 A

  However, the disassembly suspender described in Patent Document 1 has a problem that it takes time to disassemble the crawler belt because it is necessary to manually hang a plurality of hook ropes on the shoe every other one. It was.

A crawler belt disassembly suspension device according to the present invention is a crawler belt disassembly suspension device used to lift a separated crawler belt after separating a part of the crawler belt attached to the outer periphery of a side frame of a crawler crane. And a support frame having two main members extending in parallel corresponding to both ends in the width direction of the separated crawler belt, and a width of the separated crawler belt provided in the support frame so as to be openable and closable. gripper for gripping opposite ends, respectively, and a gripping mechanism having a holding member fixed to at least two positions in each of the two main members to hold the gripper rotatably, separated by gripper A belt gripping rope for lifting the disassembly hanger with both ends of the crawler belt gripped. And a belt non-gripping rope mounting portion for lifting the disassembly hanger in a state where both ends of the separated crawler belt are not grasped, and both ends of the separated crawler belt are grasped. Restricting means for fixing the gripping tool in the open position by restricting the rotation of the gripping tool when lifting the disassembly suspension tool in a state where the disassembly suspension tool is lifted, and the gripping tool is connected by a connecting pin of the separated crawler belt And a catch extending in the longitudinal direction of the crawler belts separated for gripping the plurality of shoes .

  ADVANTAGE OF THE INVENTION According to this invention, the disassembly suspension tool of the crawler belt which can perform the disassembly work of a crawler belt efficiently can be provided.

It is a side view of a crawler crane. It is an external appearance perspective view of a crawler. It is a side view which shows a mode that a part of crawler belt is removed with the disassembly suspension tool which concerns on 1st embodiment of this invention. It is an external appearance perspective view of the decomposition | disassembly hanging tool which concerns on 1st embodiment of this invention. It is a top view of the disassembly suspension tool which concerns on 1st embodiment of this invention. It is a front view of the decomposition | disassembly hanging tool which concerns on 1st embodiment of this invention. It is a top view of the disassembly suspension tool which concerns on 1st embodiment of this invention. It is a figure which shows the holding member in the decomposition | disassembly hanging tool which concerns on 1st embodiment of this invention. It is a figure which shows the holding tool in the decomposition | disassembly suspension tool which concerns on 1st embodiment of this invention. It is front sectional drawing which shows the state which mounted the disassembly suspension tool which concerns on 1st embodiment of this invention on the crawler. It is front sectional drawing which shows the state which attached the disassembly suspension tool which concerns on 1st embodiment of this invention to the crawler belt. It is an external appearance perspective view of the disassembly suspension tool which concerns on 2nd embodiment of this invention. It is a front view of the disassembly suspension tool which concerns on 2nd embodiment of this invention. It is a figure which shows the holding member in the decomposition | disassembly hanging tool which concerns on 2nd embodiment of this invention. It is a figure which shows the holding tool in the decomposition | disassembly hanging tool which concerns on 2nd embodiment of this invention. It is front sectional drawing which shows the state which mounted the disassembly suspension tool which concerns on 2nd embodiment of this invention on the crawler. It is front sectional drawing which shows the state which attached the disassembly suspension tool which concerns on 2nd embodiment of this invention to the crawler belt. It is an external appearance perspective view of the disassembly suspension tool which concerns on 3rd embodiment of this invention. It is a top view of the decomposition | disassembly hanging tool which concerns on 3rd embodiment of this invention. It is a side view which shows a mode that a part of crawler belt is removed with the disassembly suspension tool which concerns on 3rd embodiment of this invention.

Embodiments of the crawler belt disassembly suspension device according to the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing an example of a crawler crane in which a crawler belt needs to be disassembled with the disassembly suspension tool according to the present invention. As shown in FIG. 1, the crawler crane 110 includes a lower traveling body 3, an upper revolving body 2 that is turnably provided on the lower traveling body 3, and a boom 1 that is pivotally supported by the upper revolving body 2. And a counterweight 20 for balancing the airframe during work. The crawler crane 110 includes a crawler belt (also referred to as a crawler belt) 11 mounted on the outer periphery of the side frame 4, but a part of the crawler belt 11 on the upper roller 7 side may be separated due to a weight limit during transportation. The disassembly suspension tool of the present invention is used when the separated crawler belt 11 is held in a substantially horizontal state and is lifted and disassembled by a crane (auxiliary crane) prepared separately from the crawler crane 110.

  The lower traveling body 3 has a lower frame (not shown) and a pair of crawlers 101. The lower frame and the crawler 101 are disassembled during transportation. 2 and 3, the crawler 101 in this specification includes a side frame 4, travel drive devices 5 and 6 including travel motors and sprockets, and a crawler belt 11 that is driven by the travel drive devices 5 and 6. And an upper roller 7 and a lower roller 8.

  The crawler belt 11 is configured as an endless track by connecting a large number of shoes 9 with connecting pins 10 on the outer periphery of the side frame 4 via the travel drive devices 5, 6, the upper roller 7 and the lower roller 8. . When the travel drive devices 5 and 6 are driven by the travel motor, the crawler belt 11 moves along the outer periphery of the side frame 4.

  FIG. 3 shows a state where a part of the crawler belt 11 on the upper roller 7 side of the disassembled crawler 101 is removed by the dismantling hanger 50. Hereinafter, the disassembly suspension tool 50 of the crawler belt 11 will be described.

―First embodiment―
(Overall structure of dismantling hanger)
As shown in FIG. 4, an exploded suspension 50 of the crawler belt 11 according to the first embodiment includes a rectangular frame-shaped support frame 51, gripping mechanisms 52 fixed to four corners of the support frame 51, and a crawler belt. And a rope attachment portion 53 for lifting. The support frame 51 includes a pair of main members 511 arranged in parallel to each other, and a pair of connecting members 512 that connect the main members 511 at predetermined intervals in the vicinity of both ends in the longitudinal direction of the pair of main members 511. It consists of

  As shown in FIGS. 3 and 5, the two main members 511 respectively correspond to both ends of the shoe 9 on the upper roller 7 side of the crawler belt 11 when the disassembly suspension tool 50 is placed on the crawler belt 11. Are arranged at predetermined intervals so as to extend in parallel. That is, the interval between the main members 511 is set so that the gripping mechanism 52 fixed to the main member 511 can be disposed at a position where both ends of the shoe 9 can be gripped. The main material 511 and the connecting material 512 are steel materials having an I-shaped cross section.

(Grip mechanism)
As shown in FIGS. 4 to 7, four gripping mechanisms 52 are attached corresponding to the connecting members 512 disposed in the vicinity of both ends in the longitudinal direction of the pair of main members 511. The gripping mechanism 52 includes a gripping tool 521 that grips the crawler belt 11 and two holding members 522 that hold the gripping tool 521 in a rotatable manner.

  As shown in FIGS. 4 and 6 to 8, the holding member 522 is a flat plate member whose one end is welded to the main material 511 and extends on the extension line of the connecting member 512. Two pieces are fixed to each of the four corners. A gap is formed between the two holding members 522 so that an arm 521A of a gripping tool 521 described later can be inserted.

  As shown in FIG. 8, the holding member 522 has a fixed pin insertion hole 522b provided in the vicinity of the upper end of the support frame 51, a rotation shaft pin insertion hole 522a provided outside the fixed pin insertion hole 522b, and a rotation. A restriction pin insertion hole 522c provided outside the shaft pin insertion hole 522a is provided. The fixed pin insertion hole 522b and the regulation pin insertion hole 522c have the same diameter.

  As shown in FIGS. 4, 6, 7, and 9, the gripper 521 has a flat arm 521A that is rotatably attached to the holding member 522, and a C-shaped cross section that is fixed to the arm 521A. And a catch 521B which is a steel material. The catch 521B is opened on the support frame 51 side (inner side), and is arranged in parallel with the main member 511 as shown in FIG. The length of the catch 521B has a length necessary for gripping the both ends in the width direction of the crawler belt 11 to be disassembled on the upper roller 7 side over the entire length. The gripping is an operation of gripping the end side of the shoe 9 from the left and right directions with a pair of left and right C-shaped catch recesses.

  As shown in FIG. 9, the arm 521A has a rotation shaft pin insertion hole 521a formed corresponding to the rotation shaft pin insertion hole 522a (see FIG. 8) of the holding member 522, and the holding member described above. The fixing pin insertion hole 521b formed corresponding to the fixing pin insertion hole 522b (see FIG. 8) of the 522 and the engagement formed corresponding to the restriction pin insertion hole 522c (see FIG. 8) of the holding member 522 described above. A joint portion 521c and a shackle pin insertion hole 521d into which the shackle pin 63 is inserted are provided.

  As shown in FIG. 6, the shackle pin insertion hole 521 d is disposed outside the support frame 51 with respect to the rotation center of the gripping tool 521.

  The gripping tool 521 is inserted between the two holding members 522, and the rotation shaft pin 61 is inserted into the rotation shaft pin insertion hole 521 a of the gripping tool 521 and the rotation shaft pin insertion hole 522 a of the holding member 522. Is inserted into the holding member 522 so as to be rotatable.

  The gripping tool 521 rotatably held by the holding member 522 has the rotation shaft pin 61 as the rotation center when the restriction fixing pin 62 is not inserted into the fixing pin insertion hole 521b (see FIG. 10). It can be rotated. The posture in which the gripper 521 is rotatable is called a shoe non-grip disassembly lifting device lifting posture, and this posture is taken when the disassembly suspension device 50 is placed on the upper surface of the crawler belt 11.

  In the shoe non-gripping disassembly lifting tool lifting posture (see FIG. 10), the restriction fixing pin 62 is inserted into the restriction pin insertion hole 522 c of the holding member 522. The shackle 14 is attached to the gripper 521 by inserting the shackle pin 63 into the shackle pin insertion hole 521d. As will be described later, the lifting tool 50 is lifted by the shackle 14 connected to the shackle pin insertion hole 521d, so that the gripping tool 521 becomes the shoe non-holding lifting tool lifting posture, and the regulation fixing pin 62 is engaged with the gripping tool 521. Engage with the joint portion 521c to restrict the rotation of the gripper 521.

  On the other hand, when the restriction fixing pin 62 is inserted into the fixing pin insertion hole 521b (see FIGS. 6 and 11), the rotation of the gripping tool 521 around the rotation shaft pin 61 is prohibited. This posture is taken when lifting the crawler belt 11 disassembled by the disassembly suspension 50 while grasping the both ends of the separated shoes 9 with the grasping tool 521. The posture in which the rotation of the gripping tool 521 is prohibited is referred to as a shoe gripping / disassembling lifting tool lifting posture.

  In the lifting posture of the shoe gripping and disassembling tool (see FIGS. 6 and 11), the regulation fixing pin 62 is inserted into the fixing pin insertion hole 521b of the gripping tool 521 and the fixing pin insertion hole 522b of the holding member 522. The catch 521B takes a posture that is located almost directly below the rotation center. When the restriction fixing pin 62 is inserted into the fixing pin insertion holes 521b and 522b, the gripping tool 521 takes the shoe gripping / disassembling lifting tool lifting posture in which the rotation is prohibited.

  As shown in FIGS. 4, 6, and 8, the rope attachment portion 53 for lifting the belt has a main member 511 at a location where the connecting member 512 is connected in the vicinity of both ends in the longitudinal direction of the pair of main members 511. It is fixed to the upper surface of the. When lifting the disassembly suspension 50 in the lifting posture of the shoe gripping disassembly suspension, the shackle 14 is connected to the rope attachment portion 53, and the disassembly suspension 50 is lifted by the rope 19 while gripping a part of the separated crawler belt 11. It is done.

Next, a series of work procedures when disassembling the upper roller 7 side portion of the crawler belt 11 using the disassembly hanging tool 50 according to the first embodiment and placing the crawler belt 11 on the loading platform of the transport truck will be described. .
(1) Preparatory work before crawler belt separation Prior to a partial disassembly work of the crawler belt 11, parts other than the crawler belt 11 to be separated are fixed to the side frame 4 by the fixing tool 31 (see FIG. 3).

(2) Placement work of disassembly hanger on crawler belt upper surface With regard to the disassembly hanger 50, after the following preparations, the disassembly hanger 50 is lifted by an auxiliary crane as shown in FIG. Placed on. In addition, the disassembly hanging tool 50 is stored in an appropriate storage location.
In the above preparation, before lifting the disassembly hanger 50 with the auxiliary crane, the restriction fixing pin 62 is inserted in advance into the restriction pin insertion hole 522c of the holding member 522, and the shackle pin is inserted into the shackle pin insertion hole 521d of the gripper 521. 63 is inserted and the shackle 14 is attached. The shackle 14 is connected with a rope 19 suspended from the hook 30 of the auxiliary crane.

  The auxiliary crane is operated to raise the hook 30 and lift the disassembly hanging tool 50. As shown in FIG. 10, since the disassembly suspension tool 50 is lifted by the shackle 14 attached to the outermost shackle pin insertion hole 521d of the gripping tool 521, the arm 521A starts from the main material 511 using the rotation shaft pin 61 as a rotation fulcrum. It will be in the state opened by rotating in the direction of leaving. At this time, the engaging portion 521 c of the gripper 521 is engaged with the restriction fixing pin 62. As a result, the gripping tool 521 is fixed at the open position in which the gripping mechanism 52 is opened while the outward rotation is restricted.

  Therefore, when the hook 30 is raised by operating the auxiliary crane, the gripping tool 521 is rotated outward by the rope 19 and fixed at the open position, and only the disassembly lifting tool 50 is lifted. That is, the portion where the shackle pin insertion hole 521d is formed in the arm 521A is a rope attachment portion for lifting the lifting tool for lifting only the disassembly lifting tool 50 of the crawler belt 11.

  By operating the auxiliary crane, as shown in FIGS. 5 and 10, the support frame 51 is placed on the crawler belt 11 so that the pair of main members 511 are arranged corresponding to both ends in the width direction of the crawler belt 11. Placed on the top surface of.

(3) Crawler belt gripping work by disassembly suspension tool In the state shown in FIG. 10 where the support frame 51 is placed on the upper surface of the crawler belt 11, the arm 521A is pulled up by the rope 19, and the gripping tool 521 is placed outside the main material 511. It is in the posture rotated toward. With the gripping mechanism 52 in the open position, the rope 19 suspended from the hook 30 of the auxiliary crane is loosened, the shackle 14 is removed from the arm 521A, and the belt lifting rope attachment portion 53 of the support frame 51 is attached. Install. At this time, the gripper 521 rotates in the direction approaching the main material 511 as shown in FIG. By rotation of the gripping tool 521, both ends of the shoe 9 enter the inside of the C-shaped catch 521B, and the shoe 9 can be gripped by the catch 521B. Then, the restriction fixing pin 62 is removed from the restriction pin insertion hole 522c, and the restriction fixing pin 62 is inserted into the fixation pin insertion hole 521b of the gripper 521 and the fixation pin insertion hole 522b of the holding member 522 to rotate the arm 521A. Is prohibited. That is, the gripping mechanism 52 is fixed in the closed position, and the disassembly suspension tool 50 is set to the shoe gripping disassembly suspension tool lifting posture.

  The connecting pins 10 at the front and rear ends of the crawler belt 11 to be separated are pulled out, and the upper roller 7 side portion of the crawler belt 11 is separated from other portions (see FIG. 3). When the rope 19 is pulled up by the hook 30 of the auxiliary crane, the separated crawler belt 11 is gripped by the catch 521B and lifted in a horizontal state. The crawler belt 11 lifted horizontally by the disassembly suspension tool 50 is placed together with the disassembly suspension tool 50 on the loading platform of the transport vehicle. The rope 19 is loosened and removed from the shackle 14, and the disassembly hanging tool 50 is transported together with the crawler belt 11.

The operation of assembling the disassembled crawler belt 11 will be briefly described.
The rope 19 is connected to the shackle 14 of the disassembled suspension tool 50 in the transported state, and the disassembled crawler belt 11 is gripped by the disassembly suspension tool 50 with the auxiliary crane, and is placed on the upper roller 7 of the side frame 4 of the crawler 101. Place. An endless track is formed by connecting the shoes 9 at both ends of the crawler belt 11 to the shoes 9 that have not been removed from the side frame 4 by connecting pins 10. Thereafter, the shackle 14 is removed from the rope attachment portion 53 and attached to the shackle pin insertion hole 521d of the gripper 521 with the shackle pin 63, and the restriction fixing pin 62 is removed from the fixation pin insertion holes 521b and 522b to the restriction pin insertion hole 522c. Insert it. A rope 19 is connected to the shackle 14 and only the disassembly hanging tool 50 is lifted by an auxiliary crane.

According to this Embodiment described above, there can exist the following effects.
(1) The disassembling hanger 50 includes a support frame 51 including two main members 511 extending along both ends of the disassembled crawler belt, and a crawler that is provided on the support frame 51 so as to be openable and closable. And a gripping mechanism 52 having a gripping tool 521 that grips both ends of the belt 11 in the width direction from the outside. The support frame 51 is placed on the upper surface of the crawler belt 11 to be separated, both ends of the crawler belt 11 to be separated are gripped by the gripping tool 521, and the crawler belt 11 separated from the disassembly suspension tool 50 is lifted. It was transported to the cargo bed. Therefore, when the separated crawler belt 11 is lifted in a horizontal state, the work of hanging the rope, which has been performed in the prior art, is unnecessary, and the lifting workability of the separated crawler belt 11 can be improved.

(2) The gripping mechanism 52 is provided at the four corners of the support frame 51, the holding member 522 fixed to the support frame 51, and the gripping tool 521 provided on the holding member 522 so as to be rotatable around the rotation shaft pin 61. And. When the shackle 14 is attached to the shackle pin insertion hole 521d of the gripping tool 521 and the disassembly suspension tool 50 is lifted by the rope 19, the catch 521B of the gripping tool 521 is configured to open to the outside of the support frame 51 by the rope tension. . Further, the restriction fixing pin 62 is inserted into the restriction pin insertion hole 522c so that excessive rotation of the gripping tool 521 is restricted. Therefore, it is possible to prepare for lifting only the disassembly suspension 50 by a simple operation of attaching the rope 19 to the rope attachment portion for lifting the lifting device, which is the outer end portion of the arm 521A where the shackle pin insertion hole 521d is formed, via the shackle 14. Can be completed.

(3) The gripping tool 521 is configured to rotate in the direction of gripping both ends of the crawler belt 11 by the weight of the gripping tool 521 simply by placing the disassembly suspension tool 50 on the crawler belt 11. Yes. Therefore, it is possible to grip both ends of the crawler belt 11 by the gripping tool 521 simply by placing the disassembled lifting tool 50 lifted by the rope 19 via the shackle 14 on the upper surface of the crawler belt 11 and loosening the rope 19. . Thereby, the disassembly work of the crawler belt 11 can be performed more efficiently.

(4) The posture of the gripping tool 521 that grips both ends of the crawler belt 11 is fixed, and the disassembly hanging tool 50 and the crawler belt 11 are lifted. That is, by inserting the restriction fixing pin 62 into the fixing pin insertion holes 522b and 521b, the gripping tool 521 is fixed in the posture in which the catch 521B grips both ends of the shoe 9, and the rope 19 is belted through the shackle 14. Preparation for lifting the disassembled crawler belt 11 can be completed by a simple operation of attaching to the lifting rope attachment portion 53.

(5) According to (1) to (4), it is possible to provide the crawler belt 11 disassembly suspension tool 50 that can efficiently disassemble the crawler belt 11.

(6) The catch 521B of the gripping tool 521 has the same length as the entire length of the crawler belt 11 to be separated. In other words, the catch 521B is configured to grip all of both ends of the crawler belt 11. Therefore, the separated crawler belt 11 can be lifted while being kept horizontal. Accordingly, the separated crawler belt 11 can be placed on the loading platform of the transporting truck without being damaged, and after transporting, the separated crawler belt 11 can be mounted on the side frame 4 again without damaging. it can.

(7) The gripping mechanism 52 and the rope attaching portion 53 for lifting the belt are arranged corresponding to the connecting member 512 that connects the main member 511. Accordingly, the rope 19 is attached to a portion of the support frame 51 having a high rigidity, so that the crawler belt 11 that has been disassembled can be reliably lifted while suppressing the deformation of the support frame 51.

-Second embodiment-
With reference to FIGS. 12-17, the disassembly suspension tool 50 of the crawler belt 11 which concerns on 2nd embodiment is demonstrated. In the second embodiment, as shown in FIGS. 12 to 14, the rope attaching portion 53 for lifting the crawler belt is not fixed to the upper surface of the main material 511 (see FIGS. 4 and 6), and the arm 621 </ b> A is It functions as the rope attachment portion 53 for lifting the belt. This will be described in detail below. In addition, the same code | symbol is attached | subjected to the location similar to 1st embodiment, and it demonstrates centering around difference.

  The gripping mechanism 52 of the second embodiment includes a gripping tool 621 having an arm 621A and a catch 621B, and a holding member 622 that holds the gripping tool 621 in a rotatable manner. As in the first embodiment, the holding member 622 is a flat plate member whose one end is welded to the main material 511, and is formed at the four corners of the support frame 51 so as to extend on the extension line of the connecting member 512. Two each are fixed (see FIG. 12 and FIG. 14). As shown in FIG. 14, the holding member 622 has a rotation shaft pin insertion hole 622a provided at the outer end portion, and a regulation pin insertion hole 622c provided inside the rotation shaft pin insertion hole 622a. ing. In the second embodiment, the fixing pin insertion hole 522b (see FIG. 8) for fixing the arm 621A at the holding position is not formed.

  As in the first embodiment, the gripping tool 621 includes a catch 621B and a flat arm 621A that is rotatably attached to the holding member 622. As shown in FIGS. 13 and 15, the arm 621A is inserted with a pivot shaft pin formed at the center of the arm 621A corresponding to the pivot shaft pin insertion hole 622a (see FIG. 14) of the holding member 622 described above. A hole 621a, an engaging portion 621c formed corresponding to the restriction pin insertion hole 622c (see FIG. 14) of the holding member 622, and shackle pin insertion holes 621d and 621e into which the shackle pin 63 is inserted. Have. In the second embodiment, similarly to the holding member 622 described above, the fixing pin insertion hole 521b (see FIG. 9) is not formed.

  As shown in FIG. 13, the shackle pin insertion holes 621d and 621e are disposed outside and inside the center of rotation of the arm 621A.

  As shown in FIG. 13, the gripping tool 621 is inserted between the two holding members 622, and is rotated into the rotation shaft pin insertion hole 621 a of the gripping tool 621 and the rotation shaft pin insertion hole 622 a of the holding member 622. When the moving shaft pin 61 is inserted, it is rotatably held by the holding member 622.

  When the restriction fixing pin 62 is inserted into the restriction pin insertion hole 622c of the holding member 622, the restriction fixing pin 62 engages with the engaging portion 621c of the arm 621A to restrict the rotational movement of the gripping tool 621.

Next, a series of work procedures when disassembling the upper roller 7 side portion of the crawler belt 11 using the disassembly suspension tool 50 according to the second embodiment and placing the crawler belt 11 on the loading platform of the transport truck will be described. .
First, a part other than the crawler belt 11 to be separated is fixed to the side frame 4 by the fixing tool 31.

  The restriction fixing pin 62 is inserted into the restriction pin insertion hole 622 c of the holding member 622. The shackle pin 63 is inserted into the shackle pin insertion hole 621 d of the gripping tool 621 and the shackle 14 is attached to the gripping tool 621. The shackle 14 is connected to a rope 19 suspended from a hook 30 of an auxiliary crane. When tension is applied to the rope 19, the gripping tool 621 assumes a shoe non-grip disassembly lifting tool lifting posture. Excessive rotation is restricted by the restriction fixing pin 62.

  Therefore, if the auxiliary crane is operated and the hook 30 is raised, only the disassembly suspension tool 50 of the crawler belt 11 can be lifted. That is, the portion where the shackle pin insertion hole 521d is formed in the arm 521A is a rope attachment portion for lifting the lifting tool for lifting only the disassembly lifting tool 50 of the crawler belt 11.

  As shown in FIG. 16, the pair of main members 511 are arranged corresponding to both ends in the width direction of the crawler belt 11 as shown in FIG. Then, the support frame 51 is placed on the crawler belt 11.

  In the state where the disassembly suspension tool 50 is supported by the auxiliary crane, the rope 19 pulls the gripping tool 621 through the shackle 14. At this time, since the engaging portion 621c of the gripping tool 621 is engaged with the restriction fixing pin 62, the gripping tool 621 is in the open position where the outward rotation is restricted and the gripping mechanism 52 is open. It is fixed.

  When the hook 30 of the auxiliary crane is lowered and the rope 19 is loosened, the gripping tool 621 rotates so that the pair of left and right catches 621B are directed toward the support frame 51 by the weight of the gripping tool 621, and the C-shaped catch 621B. Both ends of the shoe 9 enter the inside of the shoe 9, and the gripping tool 621 takes a posture of gripping the shoe, that is, a posture of lifting the shoe gripping disassembly suspension device.

  As shown in FIG. 17, the shackle 14 is removed from the shackle pin insertion hole 621 d provided outside the rotation center of the gripping tool 621, and the shackle pin inserted inside the rotation center of the gripping tool 621 is inserted. It attaches to the hole 621e. That is, in the second embodiment, the arm 621A functions as a rope attachment portion for lifting the belt. The shackle 14 is connected to a rope 19 suspended from a hook 30 of an auxiliary crane.

  The connecting pins 10 at the front and rear ends of the crawler belt 11 to be separated are pulled out, and the upper roller 7 side portion of the crawler belt 11 is separated from other portions. When the rope 19 is pulled up by the hook 30 of the auxiliary crane, the separated crawler belt 11 is lifted in a horizontal state.

  When the crawler belt 11 lifted by the auxiliary crane using the disassembly suspension 50 is placed on the loading platform of the transport truck, the crawler belt 11 lifted horizontally by the disassembly suspension 50 is loaded together with the disassembly suspension 50. Place on top and remove rope 19 and shackle 14.

  The removed shackle 14 is attached to the shackle pin insertion hole 621d provided outside the rotation center of the gripping tool 621. The rope 19 connected to the shackle 14 is pulled up by the hook 30 of the auxiliary crane. The gripping tool 621 rotates so as to be pulled up by the rope 19, and the regulation fixing pin 62 and the engaging portion 621 c are engaged. The gripping tool 621 is fixed at the open position by restricting the rotation by the restriction fixing pin 62. By raising the hook 30 of the auxiliary crane as it is, only the disassembly hanging tool 50 is lifted.

  Therefore, according to the second embodiment, similarly to the first embodiment, it is possible to provide the disassembly suspension tool 50 for the crawler belt 11 that can efficiently disassemble the crawler belt 11. According to the second embodiment, the fixing pin insertion hole is omitted, and only the replacement work of the shackle 14 is performed to prepare for lifting only the disassembled lifting device 50 and to prepare for lifting the disassembled crawler belt 11. This makes it possible to work more smoothly.

-Third embodiment-
With reference to FIGS. 18-20, the decomposition | disassembly suspension tool 50 of the crawler belt 11 which concerns on 3rd embodiment is demonstrated. As shown in FIGS. 18 to 20, the disassembly suspension tool 50 according to the third embodiment has the same configuration as that of the second embodiment except for the catch.

  The disassembly suspension tool of the third embodiment includes a front catch 621F and a rear catch 621R so as to grip the front part and the rear part of the crawler belt 11, respectively. That is, the catch 521B of the first and second embodiments is divided into two. As shown in FIGS. 19 and 20, the catches 621F and 621R are configured to grip part of both ends including the four corners of the separated crawler belt 11, and do not grip the middle of the separated crawler belt 11. .

  The total length of each of the catches 621F and 621R is equal to a predetermined length of both side edges including the four corners so that when the crawler belt 11 is lifted, the middle of the separated crawler belt 11 can be kept substantially horizontal without being greatly bent. It is determined as appropriate so as to hold it.

  According to the third embodiment, similarly to the second embodiment, it is possible to provide the disassembly suspension tool 50 for the crawler belt 11 that can efficiently disassemble the crawler belt 11. Furthermore, compared to the second embodiment, the mass of the dismantling hanger 50 can be reduced.

The above-described embodiment can be modified as follows.
[Modification]
(1) The gripping tools 521 and 621 are configured to rotate due to the weight of the gripping tools 521 and 621 when the disassembly suspension tool 50 is placed on the crawler belt 11, but is not limited thereto. When lifting only the disassembly hanging tool 50, the gripping tools 521 and 621 are fixed with pins or the like, and after the disassembly hanging tool 50 is placed on the crawler belt 11, the pins are removed to hold the grasping tools 521 and 621. It may be arranged at a predetermined position.

  (2) The gripping mechanism 52 is not limited to the case where the gripping mechanism 52 is arranged so as to be line-symmetric with respect to the support frame longitudinal direction center line. Furthermore, the location where the holding members 522 and 622 are fixed in the support frame 51, that is, the gripping mechanism 52 to be used is not limited to four. The gripping mechanism 52 may be provided in at least two places in each of the two main members 511 as long as the disassembled crawler belt can be hung in a horizontal state or in a state where the middle is slightly bent. In correspondence with the entire length of the crawler belt 11 to be separated, the two main members 511 may be fixed to three or more locations.

(3) The catches 521B and 621B are not limited to steel materials having a C-shaped cross section. Various members having a hook shape in which the support frame 51 side is opened can be employed. Although the catches 521B and 621B of the first to third embodiments are C-shaped with a predetermined length, the catches 521B and 621B may have a flat plate shape. However, in order to suspend the disassembled crawler belt in a horizontal state or in a state in which the middle is slightly bent, it is necessary to provide a plurality of flat plate-shaped catches at predetermined intervals in the longitudinal direction of the support frame.
(4) The support frame 51 is not limited to the case where it is formed in a rectangular frame shape by a steel material having an I-shaped cross section. Various reinforcing members may be further added to form the support frame 51 having high rigidity.

  (5) The holding members 522 and 622 are not limited to the case where the holding members 522 and 622 are fixed to the support frame 51 as separate members. The main member 511 of the support frame 51 may protrude outward to form the holding members 522 and 622 that hold the gripping tools 521 and 28 rotatably.

(6) The support frame 51 may be stretchable in the longitudinal direction or the width direction. Various crawler belts having different sizes can be disassembled by making them extendable in the longitudinal direction or the width direction.
(7) The disassembly suspension tool 50 is not limited to the case of lifting with an auxiliary crane. The crawler crane 110 itself may lift the disassembly suspension tool 50.

  The present invention is not limited to the embodiment described above, and can be freely changed and improved without departing from the gist of the invention.

  2 Upper swing body, 3 lower traveling body, 4 side frame, 7 upper roller, 8 lower roller, 9 shoe, 10 connecting pin, 11 crawler belt, 14 shackle, 19 rope, 30 hook, 31 fixing tool, 50 disassembly suspension tool, 51 support frame, 52 gripping mechanism, 53 rope mounting portion, 61 rotating shaft pin, 62 regulating fixing pin, 63 shackle pin, 101 crawler, 110 crawler crane, 511 main material, 512 coupling material, 521 gripping tool, 521A arm, 521B Catch, 521a Rotating shaft pin insertion hole, 521b Fixed pin insertion hole, 521c Engagement part, 521d Shackle pin insertion hole, 522 Holding member, 522a Rotation shaft pin insertion hole, 522b Fixed pin insertion hole, 522c Restriction pin insertion Hole, 621 gripper, 621A arm, 21B catch, 621F front catch, 621R rear catch, 621a pivot shaft pin insertion hole, 621c engaging portion, 621d, 621 e shackle pin insertion hole, 622 retaining member, 622a pivot shaft pin insertion hole, 622c regulating pin insertion hole

Claims (6)

A crawler belt disassembly hanging tool used for lifting the separated crawler belt after separating a part of the crawler belt attached to the outer periphery of the side frame of the crawler crane,
A support frame having two main members extending in parallel corresponding to both ends in the width direction of the separated crawler belt;
A gripping tool provided on the support frame so as to be openable and closable, and grips both ends in the width direction of the separated crawler belt in the closed position, and the two main members for rotatably holding the gripping tool A gripping mechanism having a holding member fixed to at least two places in each of
A belt gripping rope mounting portion for lifting the belt, which is provided to lift the disassembly suspension tool in a state where both ends of the separated crawler belt are gripped by the gripping tool;
A belt non-gripping rope mounting portion for lifting the belt provided to lift the disassembled lifting tool in a state where both ends of the separated crawler belt are not gripped,
A regulating means for fixing the gripping tool to an open position by regulating the rotation of the gripping tool when lifting the disassembly suspension tool in a state where the both ends of the separated crawler belt are not gripped ,
The crawler belt includes a catch extending in a longitudinal direction of the separated crawler belt for grasping a plurality of shoes connected by a connecting pin of the separated crawler belt. Disassembly hanging tool. In the crawler belt disassembly suspension device according to claim 1,
The crawler belt disassembly suspension device, wherein the belt non-gripping rope mounting portion is provided on the gripping tool outside the rotation center of the gripping tool. The crawler belt disassembly hanger according to claim 2,
The crawler belt disassembly suspension device, wherein the belt gripping rope attachment portion is provided on the gripping tool on the inner side of the rotation center of the gripping tool. In the disassembly suspension tool of the crawler belt according to any one of claims 1 to 3,
The gripping tool rotates to the closed position for gripping both ends of the separated crawler belt by its own weight when the disassembly suspension tool is placed on the crawler belt. Crawler belt disassembly suspension. In the disassembly suspension tool of the crawler belt according to any one of claims 1 to 4,
The gripping device grips part of both ends of the separated crawler belt including four corners of the separated crawler belt or all of both ends of the separated crawler belt. Disassembly hanging tool. In the crawler belt disassembly suspension tool according to any one of claims 1 to 5 ,
A crawler belt disassembly suspension device comprising fixing means for fixing the gripping device in the closed position when gripping both ends of the separated crawler belt.

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