Traveling device hanging tool and method for hanging traveling device

Abstract

To provide a traveling device hanging tool capable of performing a step of hanging up the traveling device hanging tool by itself and a step of hanging up both the traveling device hanging tool and a traveling device without changing a mounting position of a hanging tool, and a method for hanging up the traveling device.SOLUTION: A traveling device hanging tool 50 is a traveling device hanging tool for hanging up a traveling device 11 of a construction machine 100, and comprises at least one hanging tool body 60 having a fixed portion detachably fixed to the traveling device 11, and at least one movable member 70 having a mounting portion 71 for mounting a hanging device 200 and supported by the hanging tool body 60. The movable member 70 is configured to be displaceable with respect to the hanging tool body 60 between a single hanging up position P1, which is a position for hanging up the traveling device hanging tool 50 by itself, and a traveling device hanging up position P2, which is a position for hanging up the traveling device hanging tool 50 and the traveling device 11.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a traveling device lifting tool and a traveling device lifting method used when lifting a traveling device such as a crawler traveling device of a construction machine.

Background Art

[0002] Each of Patent Document 1 and Patent Document 2 discloses a technique for lifting a crawler traveling device of a construction machine.

[0003] Generally, a traveling device lifting operation for lifting a crawler traveling device is performed using, for example, an auxiliary machine such as an auxiliary crane and a traveling device lifting tool. The auxiliary machine is equipped with a lifting device. The lifting device includes, for example, a rope, a connecting component (such as a shackle) fixed to the lower end of the rope, and a winch for winding and unwinding the rope.

[0004] The traveling device lifting operation includes a single-body lifting step of lifting a traveling device lifting tool not fixed to the crawler traveling device alone, and a traveling device lifting step of lifting both the traveling device lifting tool and the crawler traveling device with the traveling device lifting tool fixed to the crawler traveling device.

[0005] The traveling device lifting tool has a fixing portion detachable from the crawler traveling device, a first attachment portion to which the shackle of the lifting device can be attached, and a second attachment portion located at a position away from the first attachment portion and to which the shackle can be attached. The first attachment portion is formed at a position considering the position of the center of gravity of the traveling device lifting tool alone in the traveling device lifting tool (in FIG. 2 of Patent Document 1, the portion denoted by reference numeral 67). The second attachment portion is formed at a position considering the position of the center of gravity of the lifting target including the traveling device lifting tool and the crawler traveling device in the traveling device lifting tool (in FIG. 2 of Patent Document 1, the portion denoted by reference numeral 65).

Prior Art Documents

Patent Documents

[0006] Patent Document 1 Japanese Patent Application Laid-Open No. 2020-97486 Patent Document 2 Japanese Patent Application Laid-Open No. 2023-22703 Summary of the Invention Problems to be Solved by the Invention

[0007] In the above-described traveling device lifting operation, in the single-lifting step, the shackle of the lifting device is attached to the first attachment portion, and in the traveling device lifting step, the shackle of the lifting device is attached to the second attachment portion. That is, in the above-described traveling device lifting operation, it is necessary to remove the shackle of the lifting device from the first attachment portion and attach it to the second attachment portion, or to remove the shackle from the second attachment portion and attach it to the first attachment portion. That is, it is necessary to change the attachment position of the lifting device.

[0008] An object of the present disclosure is to provide a traveling device lifting tool and a traveling device lifting method capable of performing a step of lifting the traveling device lifting tool alone and a step of lifting both the traveling device lifting tool and the traveling device without changing the attachment position of the lifting device. Means for Solving the Problems

[0009] A traveling device lifting tool according to an aspect of the present disclosure is a traveling device lifting tool for lifting a traveling device of a construction machine, and includes at least one lifting tool body having a fixing portion detachably fixed to the traveling device, and at least one movable member having an attachment portion for attaching a lifting device and supported by the lifting tool body. The movable member is configured to be displaceable with respect to the lifting tool body between a single-lifting position that is a position for lifting the traveling device lifting tool alone and a traveling device lifting position that is a position for lifting the traveling device lifting tool and the traveling device.

[0010] A method for lifting a traveling device according to another aspect of the present disclosure is a method for lifting a traveling device using the traveling device lifting tool, including lifting the traveling device lifting tool using the lifting device in a state where the movable member is disposed at the single-lifting position, and lifting the traveling device lifting tool and the traveling device using the lifting device in a state where the movable member is disposed at the traveling device lifting position.

Effect of the Invention

[0011] According to the present disclosure, there is provided a traveling device lifting tool and a traveling device lifting method capable of performing a step of lifting the traveling device lifting tool alone and a step of lifting both the traveling device lifting tool and the traveling device without changing the attachment position of the lifting device.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0013] Embodiments of the present disclosure will be described with reference to the drawings.

[0014] As shown in FIG. 1, the construction machine 100 according to the embodiment is a crane. As shown in FIGS. 1 and 2, the construction machine 100 includes a lower traveling body 10, an upper slewing body 20 rotatably supported by the lower traveling body 10, and a working device 30. The lower traveling body 10 includes a pair of crawler traveling devices 11 and a lower frame 12 supported by the pair of crawler traveling devices 11. The lower frame 12 may include a car body and at least one axle. The upper slewing body 20 includes an upper frame 21, a cab 22 supported by the upper frame 21, and a counterweight 23. The working device 30 includes a boom 31. The working device 30 may further include a schematic jib supported at the tip of the boom 31.

[0015] The crawler traveling device 11 includes a crawler frame 13 extending in the front-rear direction, two wheels 14 rotatably supported at the front end portion and the rear end portion of the crawler frame 13, respectively, and a crawler belt 15 disposed around the crawler frame 13 and the two wheels 14.

[0016] A pair of crawler traveling devices 11 are respectively attached to the right side and the left side of the lower frame 12. Each of the attachment work and the removal work of the crawler traveling device 11 includes a traveling device lifting work for lifting the crawler traveling device 11. The traveling device lifting work is performed using an auxiliary machine such as an auxiliary crane (not shown) and a traveling device lifting tool 50 according to the present embodiment. The traveling device lifting tool 50 is a lifting tool for lifting the crawler traveling device 11. The auxiliary machine includes a hoisting device 200. The construction machine 100 includes a plurality of jacks 101 for stabilizing the posture of the construction machine 100 when performing these operations. The jack 101 may sometimes be referred to as a trans-lifter. Each of the plurality of jacks 101 may be configured to expand and contract vertically by, for example, hydraulic pressure. The plurality of jacks 101 are used, for example, to hold the lower frame 12 in a state floating from the ground in the work of attaching the crawler traveling device 11 to the lower frame 12, or in the work of lowering the components of the construction machine 100 including the lower frame 12 from, for example, a trailer to the ground.

[0017] The hoisting device 200 includes, for example, a rope 201, a shackle 202 fixed to the lower end of the rope 201, and a winch (not shown) for winding and unwinding the rope 201. The shackle 202 includes, for example, a U-shaped metal fitting 203 (see FIG. 3) and a bolt 204 (see FIG. 3) supported by the metal fitting 203. The shackle 202 can be attached to and detached from the traveling device lifting tool 50 (specifically, the attachment portion 71 described later) by tightening or loosening the bolt 204 with respect to the metal fitting 203.

[0018] The traveling device lifting work includes a single-body lifting step indicated by a two-dot chain line in FIG. 2 and a traveling device lifting step indicated by a solid line in FIG. 2. The single-body lifting step is a step of lifting the traveling device lifting tool 50 not fixed to the crawler traveling device 11 alone. The traveling device lifting step is a step of lifting both the traveling device lifting tool 50 and the crawler traveling device 11 with the traveling device lifting tool 50 fixed to the crawler traveling device 11.

[0019] Hereinafter, the features of the traveling device hoist 50 according to the embodiment will be described. The traveling device hoist 50 includes the following first to eleventh aspects.

[0020] [First Aspect] As shown in FIGS. 2 to 10, the traveling device hoist 50 according to the first aspect includes at least one hoist body 60 and at least one movable member 70. The hoist body 60 has a fixing portion 61 that is detachably fixed to the traveling device 11. The movable member 70 is supported by the hoist body 60. The movable member 70 has an attachment portion 71 for attaching the hoisting device 200. The movable member 70 is configured to be displaceable with respect to the hoist body 60 between a single-lifting position P1, which is a position for lifting the traveling device hoist 50 alone, and a traveling-device lifting position P2, which is a position for lifting the traveling device hoist 50 and the traveling device 11.

[0021] In this first aspect, since the movable member 70 can be displaced with respect to the hoist body 60 between the single-lifting position P1 and the traveling-device lifting position P2, it is possible to perform a single-lifting step of lifting the traveling device hoist 50 alone and a traveling-device lifting step of lifting both the traveling device hoist 50 and the traveling device 11 without changing the attachment position of the shackle 202 of the hoisting device 200.

[0022] The single-lifting position P1 is a position determined in consideration of the center of gravity of the traveling device hoist 50 alone, and the traveling-device lifting position P2 is a position determined in consideration of the center of gravity of the lifting object including the traveling device hoist 50 and the crawler traveling device 11.

[0023] The crawler frame 13 has a fixed portion 16 to which the fixing portion 61 of the hoist body 60 is fixed. The fixed portion 16 may be formed, for example, on the outer surface of the crawler frame 13. In the specific examples shown in FIGS. 1 and 2, the fixed portion 16 has a shape that protrudes outward from the outer surface of the crawler frame 13. That is, the fixed portion 16 of the crawler frame 13 on the right side has a shape that protrudes to the right from the right side surface of the crawler frame 13, and the fixed portion 16 of the crawler frame 13 on the left side has a shape that protrudes to the left from the left side surface of the crawler frame 13. An insertion hole for inserting a shaft-shaped fixing member 90 such as a bolt or a pin may be formed in the fixed portion 16, and an insertion hole for inserting the fixing member 90 may be formed in the fixing portion 61 of the lifting tool body 60. In this case, by inserting the fixing member 90 into the insertion hole of the fixing portion 61 and the insertion hole of the fixed portion 16, the fixing portion 61 of the lifting tool body is detachably fixed to the fixed portion 16 of the crawler frame 13.

[0024] The movable member 70 has a base end portion 74 and a tip end portion 75, and has a shape extending from the base end portion 74 toward the tip end portion 75. As shown in the specific examples of FIGS. 2 to 10, the movable member 70 may have a shape extending in one direction from the base end portion 74 toward the tip end portion 75. The attachment portion 71 is formed at the tip end portion 75 of the movable member 70. An insertion hole for inserting the shackle 202 of the lifting device 200 (specifically, the bolt 204 of the shackle 202) may be formed in the attachment portion 71.

[0025] Each of the traveling device lifting tools 50 shown in FIGS. 2 to 10 includes a plurality of lifting tool bodies 60 (specifically, a pair of lifting tool bodies 60) and a plurality of movable members 70 (specifically, a pair of movable members 70). The pair of lifting tool bodies 60 are arranged at intervals from each other. The pair of movable members 70 are arranged at intervals from each other. The pair of lifting tool bodies 60 have the same structure, and the pair of movable members 70 have the same structure. Therefore, hereinafter, mainly, the structure of one lifting tool body 60 and the structure of one movable member 70 will be described.

[0026] [Second Aspect] The traveling device hoist 50 according to the second aspect may further have the following configuration in the traveling device hoist 50 according to the first aspect. That is, in the traveling device hoist 50 according to the second aspect, as shown in FIGS. 2 to 7, the movable member 70 may be rotatably supported with respect to the hoist main body 60. In this second aspect, by performing a simple operation of rotating the movable member 70 with respect to the hoist main body 60, the movable member 70 can be displaced with respect to the hoist main body 60 between the single-lifting position P1 and the traveling device lifting position P2.

[0027] In the specific example shown in FIGS. 2 to 7, the movable member 70 is supported by the hoist main body 60 so as to be able to rise and fall. The movable member 70 is arranged in a posture of standing upright upward from the upper part of the hoist main body 60 at the single-lifting position P1. That is, the movable member 70 is arranged vertically at the single-lifting position P1. On the other hand, the movable member 70 is arranged in a posture of lying down at the traveling device lifting position P2. That is, the movable member 70 is arranged horizontally at the traveling device lifting position P2.

[0028] The hoist main body 60 has a support portion 64 for supporting the movable member 70. The base end portion 74 of the movable member 70 is rotatably supported by the support portion 64 of the hoist main body 60. The support portion 64 is located at the upper part of the hoist main body 60. Specifically, for example, the support portion 64 may be formed with an insertion hole for inserting a shaft-shaped fixing member 94 such as a bolt or a pin, and the base end portion 74 may be formed with an insertion hole for inserting the fixing member 94. In this case, by inserting the fixing member 94 into the insertion hole of the support portion 64 and the insertion hole of the base end portion 74, the movable member 70 is supported by the hoist main body 60 so as to be able to rotate around the fixing member 94 with respect to the hoist main body 60.

[0029] In the traveling device hoist 50 shown in FIGS. 2 and 3, the hoist body 60 includes a vertical portion 6A and a horizontal portion 6B. In the state where the traveling device hoist 50 is fixed to the crawler traveling device 11 as shown by the solid line in FIG. 2 (hereinafter, this state may be referred to as the fixed state), the vertical portion 6A is a portion that extends downward from a position above the crawler frame 13 and outside in the left-right direction. In the fixed state, the horizontal portion 6B is a portion that extends inward in the left-right direction (left side in FIG. 2) from the upper part of the vertical portion 6A. In the fixed state, the horizontal portion 6B is located above the crawler frame 13. More specifically, in the fixed state, the horizontal portion 6B is located above the upper surface of the crawler belt 15, and part or all of the horizontal portion 6B is in a position that overlaps the upper surface of the crawler belt 15 in plan view.

[0030] In each of the traveling device hoists 50 shown in FIG. 7 and the traveling device hoist 50 shown in FIG. 8 described later, the hoist body 60 has a vertical portion 6A, but does not have a horizontal portion 6B like the traveling device hoist 50 shown in FIG. 3. In each of the traveling device hoists 50 shown in FIG. 7 and the traveling device hoist 50 shown in FIG. 8 described later, when the movable member 70 is disposed at the traveling device lifting position P2 in the fixed state, the movable member 70 is located above the upper surface of the crawler belt 15 and is disposed in a position that overlaps the upper surface of the crawler belt 15 in plan view.

[0031] The suspension tool body 60 has a lower contact portion 66. The lower contact portion 66 is a portion that contacts the crawler frame 13 below the fixing portion 61 in a state where the fixing portion 61 of the suspension tool body 60 is fixed to the fixed portion 16 of the crawler frame 13. In the specific examples shown in FIGS. 2 and 3, the lower contact portion 66 is supported at the lower end of the vertical portion 6A of the suspension tool body 60. The lower contact portion 66 has an adjustment mechanism for adjusting the protruding amount from the lower end of the suspension tool body 60 (the lower end of the vertical portion 6A). The adjustment mechanism may include bolts and nuts. The fixing portion 61 of the suspension tool body 60 is allowed to rotate slightly around the fixing member 90 with respect to the fixed portion 16 of the crawler frame 13. Therefore, by adjusting the protruding amount from the lower end of the suspension tool body 60 by the adjustment mechanism, the position of the center of gravity of the lifting target including the traveling device suspension tool 50 and the crawler traveling device 11 is adjusted.

[0032] [Third Aspect] The traveling device suspension tool 50 according to the third aspect preferably further includes the following configuration in the traveling device suspension tool 50 according to the second aspect. That is, as shown in FIG. 3, the traveling device suspension tool 50 according to the third aspect preferably includes a first rotation restricting portion 91 that restricts further rotation in the rotation direction D1 when the movable member 70 is displaced from the traveling device lifting position P2 to the single-body lifting position P1 in a state where the movable member 70 is disposed at the single-body lifting position P1. In this third aspect, when the movable member 70 is disposed at the single-body lifting position P1, the movable member 70 is restricted from rotating further in the rotation direction D1 from the single-body lifting position P1, so that the operation of disposing the movable member 70 at the single-body lifting position P1 is easy.

[0033] The first rotation restricting portion 91 may be a member separate from the sling body 60 and the movable member 70, may be a part of the sling body 60, or may be a part of the movable member 70. When the first rotation restricting portion 91 is a member separate from the sling body 60 and the movable member 70, the first rotation restricting portion 91 may be fixed to the sling body 60 or may be fixed to the movable member 70. The first rotation restricting portion 91 may have a contact portion that contacts the sling body 60 or the movable member 70 when the movable member 70 is disposed at the single lifting position P1. When the movable member 70 is disposed at the single lifting position P1, the first rotation restricting portion 91 may be configured to restrict further rotation of the movable member 70 in the rotation direction D1 by contacting the sling body 60 or the movable member 70.

[0034] [Fourth Aspect] The traveling device sling 50 according to the fourth aspect preferably further includes the following configuration in the traveling device sling 50 according to the second or third aspect. That is, the traveling device sling 50 according to the fourth aspect preferably further includes a second rotation restricting portion 92 that restricts rotation of the movable member 70 with respect to the sling body 60 in a state where the movable member 70 is disposed at the traveling device lifting position P2. In this fourth aspect, rotation of the movable member 70 disposed at the traveling device lifting position P2 when lifting the traveling device sling 50 and the traveling device 11 is restricted.

[0035] [Fifth Aspect] The traveling device hanger 50 according to the fifth aspect preferably further includes the following configuration in the traveling device hanger 50 according to the fourth aspect. That is, in the traveling device hanger 50 according to the fifth aspect, as shown in FIGS. 3 and 4, each of the hanger body 60 and the movable member 70 has insertion holes 62 and 72, and the second rotation restricting portion 92 preferably includes a pin 93 that is inserted into the insertion hole 62 of the hanger body 60 and the insertion hole 72 of the movable member 70 in a state where the movable member 70 is disposed at the traveling device lifting position P2. In this fifth aspect, the movable member 70 can be held at the traveling device lifting position P2 by a simple operation of inserting the pin 93 into the insertion hole 62 of the hanger body 60 and the insertion hole 72 of the movable member 70 in a state where the movable member 70 is disposed at the traveling device lifting position P2.

[0036] In the specific example shown in FIGS. 3 and 4, the movable member 70 has a tip-side protruding portion 76 that protrudes so as to bend from the tip end portion 75. The tip-side protruding portion 76 protrudes from the tip end portion 75 in a direction intersecting the extending direction of the movable member 70. For example, as shown by the two-dot chain line in FIG. 3, in the fixed state and in a state where the movable member 70 is disposed at the traveling device lifting position P2, the tip-side protruding portion 76 may protrude downward from the tip end portion 75. Specifically, in the fixed state and in a state where the movable member 70 is disposed at the traveling device lifting position P2, an intermediate portion between the base end portion 74 and the tip end portion 75 of the movable member 70 may be disposed above (specifically, directly above) the horizontal portion 6B of the hanger body 60. The insertion hole 62 for inserting the pin 93 may be formed at the tip end portion 65 (inner end portion) of the horizontal portion 6B of the hanger body 60, and the insertion hole 72 for inserting the pin 93 may be formed in the tip-side protruding portion 76 of the movable member 70. By inserting the pin 93 into the insertion hole 62 at the tip end portion 65 of the horizontal portion 6B and the insertion hole 72 in the tip-side protruding portion 76 of the movable member 70, the movable member 70 is fixed to the horizontal portion 6B of the hanger body 60.

[0037] In Modification 1 shown in FIGS. 5 to 7 as well, the movable member 70 is supported by the suspension tool body 60 so as to be rotatable about the fixing member 94 with respect to the suspension tool body 60. The second rotation restricting portion 92 includes an insertion hole 92A formed in a support portion 64 located at the upper portion of the suspension tool body 60 and a pin 93. The base end portion 74 of the movable member 70 has an insertion hole 95. This insertion hole 95 is not arranged at a position corresponding to the insertion hole 92A of the second rotation restricting portion 92 at the single-lifting position P1 shown in FIG. 7, but is arranged at a position corresponding to the insertion hole 92A of the second rotation restricting portion 92 at the traveling device lifting position P2 shown in FIGS. 5 and 6. At this traveling device lifting position P2, when the pin 93 is inserted into the insertion hole 92A of the second rotation restricting portion 92 and the insertion hole 95 of the base end portion 74 of the movable member 70, the movable member 70 is fixed to the suspension tool body 60 as shown in FIG. 6.

[0038] [Sixth Aspect] The traveling device suspension tool 50 according to the sixth aspect may further have the following configuration in the traveling device suspension tool 50 according to the first aspect. That is, in the traveling device suspension tool 50 according to the sixth aspect, the movable member 70 may be slidably supported with respect to the suspension tool body 60 as shown in FIG. 8. In this sixth aspect, by performing a simple operation of sliding the movable member 70 with respect to the suspension tool body 60, the movable member 70 can be displaced with respect to the suspension tool body 60 between the single-lifting position P1 and the traveling device lifting position P2.

[0039] [Seventh Aspect] The traveling device hoist 50 according to the seventh aspect preferably further includes the following configuration in the traveling device hoist 50 according to the sixth aspect. That is, in the traveling device hoist 50 according to the seventh aspect, one of the hoist body 60 and the movable member 70 has a hole or groove formed along the one member to allow the slide of the movable member 70 with respect to the hoist body 60, and the other of the hoist body 60 and the movable member 70 preferably has a shaft member capable of displacing along the hole or the groove. In this seventh aspect, the shaft member is displaced along the hole or the groove, so that the movable member 70 can be displaced with respect to the hoist body 60 between the single lifting position P1 and the traveling device lifting position P2. The shaft member is a shaft-like member such as a bolt or a pin.

[0040] In the specific example shown in FIGS. 8 to 10, the movable member 70 has a long hole 73 formed along the longitudinal direction of the movable member 70, and the hoist body 60 has a shaft member 63 disposed inside the long hole 73 and capable of displacing along the long hole 73.

[0041] [Eighth Aspect] The traveling device hoist 50 according to the eighth aspect preferably further includes the following configuration in the traveling device hoist 50 according to the seventh aspect. That is, in the traveling device hoist 50 according to the eighth aspect, the hole or the groove preferably has a fitting portion into which at least a part of the shaft member is fitted in a state where the movable member 70 is disposed at the single lifting position P1. In this eighth aspect, at least a part of the shaft member is fitted into the fitting portion, so that the movable member 70 is easily maintained at the single lifting position P1.

[0042] In the specific example shown in FIGS. 8 to 10, the long hole 73 of the movable member 70 has a fitting portion 73A including a recess recessed downward from the long hole 73 at a portion corresponding to the end of the long hole 73. As shown in FIG. 9, in a state where the movable member 70 is disposed at the single lifting position P1, a part of the shaft member 63 of the hoist body 60 is fitted into the fitting portion 73A of the movable member 70.

[0043] In the specific example shown in FIG. 9, the suspension tool body 60 has a support surface 69. As shown in FIG. 9, this support surface 69 is a surface facing the lower surface 70S of the movable member 70 in a state where the movable member 70 is arranged at the single-lifting position P1. As shown in FIG. 9, in a state where the movable member 70 is arranged at the single-lifting position P1, the movable member 70 is arranged in an inclined posture such that the base end portion 74 (FIG. 10) is at a lower position than the tip end portion 75. In this inclined posture, the lower surface 70S of the movable member 70 is inclined in the same direction as the inclination direction of the movable member 70, and the support surface 69 is a plane substantially parallel to the lower surface 70S of the movable member 70. Thereby, the posture of the movable member 70 at the single-lifting position P1 is stabilized.

[0044] In the specific example shown in FIG. 10, the movable member 70 has a support surface 79. As shown in FIG. 10, this support surface 79 is a surface facing the side surface 60S of the suspension tool body 60 in a state where the movable member 70 is arranged at the traveling device lifting position P2. This support surface 79 is formed on the base end side protruding portion 77 of the movable member 70. This base end side protruding portion 77 is a portion protruding downward from the base end portion 74 of the movable member 70 in the fixed state and in a state where the movable member 70 is arranged at the traveling device lifting position P2, and the support surface 79 is the inner surface of the base end side protruding portion 77. This support surface 79 is a plane substantially parallel to the side surface 60S of the suspension tool body 60. Thereby, the posture of the movable member 70 at the traveling device lifting position P2 is stabilized.

[0045] [Aspect 9] The traveling device hoist 50 according to the ninth aspect preferably further includes the following configuration in the traveling device hoist 50 according to any one of the first to eighth aspects. That is, in the traveling device hoist 50 according to the ninth aspect, it is preferable that the at least one movable member 70 includes a first movable member 70, a second movable member 70, and a connecting member 78 that connects the first movable member 70 and the second movable member 70. In this ninth aspect, as shown in FIGS. 5 and 7, since the first movable member 70 and the second movable member 70 are connected by the connecting member 78, the first movable member 70 and the second movable member 70 are interlocked with each other. Thereby, the efficiency of the operation of displacing the pair of movable members 70 between the single lifting position P1 and the traveling device lifting position P2 can be improved.

[0046] [Tenth Aspect] The traveling device hoist 50 according to the tenth aspect preferably further includes the following configuration in the traveling device hoist 50 according to any one of the first to ninth aspects. That is, in the traveling device hoist 50 according to the tenth aspect, the at least one movable member 70 includes a first movable member 70 and a second movable member 70, the first movable member 70 and the second movable member 70 are arranged at intervals from each other, and each of the first movable member 70 and the second movable member 70 is preferably constituted by a single plate-like member. In this tenth aspect, since the first movable member 70 and the second movable member 70 are arranged at intervals from each other, stable lifting work becomes possible, and since each of the first movable member 70 and the second movable member 70 is constituted by a single plate-like member, it becomes possible to suppress an increase in the weight of each movable member 70. Thereby, the efficiency of the operation of displacing each of the first movable member 70 and the second movable member 70 between the single lifting position P1 and the traveling device lifting position P2 can be improved.

[0047] [Eleventh Aspect] The traveling device lifting method according to the 11th aspect is a traveling device lifting method for lifting the crawler traveling device 11 using the traveling device lifting tool 50 according to any one of the 1st to 10th aspects. In this method, the traveling device lifting tool 50 is lifted using the lifting device 200 in a state where the movable member 70 is arranged at the single-lifting position P1, and the traveling device lifting tool 50 and the traveling device 11 are lifted using the lifting device 200 in a state where the movable member 70 is arranged at the traveling device lifting position P2. In this 11th aspect, since the movable member 70 can be displaced with respect to the sling body 60 between the single-lifting position P1 and the traveling device lifting position P2, it is possible to perform the single-lifting step of lifting the traveling device lifting tool 50 alone and the traveling device lifting step of lifting both the traveling device lifting tool 50 and the traveling device 11 without changing the attachment position of the shackle 202 of the lifting device 200.

[0048] [Other Modification Examples] As described above, the embodiments of the present disclosure have been explained. However, the present disclosure is not limited to the above embodiments and includes, for example, Modification Examples 2 to 7 as follows.

[0049] (A) Modification Example 2 In the above embodiment, the movable member 70 includes the first movable member 70 and the second movable member 70. However, the traveling device lifting tool may include only a single movable member.

[0050] (B) Modification Example 3 In the above-described embodiment, the movable member 70 is arranged in a posture of standing upright upward from the upper part of the suspension tool main body 60 at the single-body lifting position P1, that is, arranged vertically. The movable member 70 is arranged in a posture of lying down at the traveling device lifting position P2, that is, arranged horizontally. However, the movable member 70 may be configured as follows. That is, the movable member 70 according to Modification 3 is arranged in a posture of standing upright upward from the upper part of the suspension tool main body 60 at the traveling device lifting position P2, that is, arranged vertically. The movable member 70 may be arranged in a posture of lying down at the single-body lifting position P1, that is, arranged horizontally. In the case of this Modification 3, the position of the support portion of the suspension tool main body 60 that rotatably supports the base end portion 74 of the movable member 70 may be set at a position closer to the tip end portion 65 of the lateral portion 6B of the suspension tool main body 60 as compared with the position of the support portion 64 of the suspension tool main body 60 in FIG. 3, for example.

[0051] (C) Modification 4 The movable member 70 according to Modification 4 may be arranged in a posture of lying down, that is, arranged horizontally, at both the single-body lifting position P1 and the traveling device lifting position P2. In the case of this Modification 4, the position of the support portion of the suspension tool main body 60 may be set at a position (intermediate position) between the position of the support portion 64 of the suspension tool main body 60 in FIG. 3 and the position of the support portion of the suspension tool main body 60 in Modification 3. The movable member 70 may be rotatably supported by the support portion of the suspension tool main body 60 at an intermediate portion between the base end portion 74 and the tip end portion 75, for example. The movable member 70 according to this Modification 4 may be configured to switch from one of the single-body lifting position P1 and the traveling device lifting position P2 to the other by rotating by a predetermined angle (for example, 180 degrees) from one of the single-body lifting position P1 and the traveling device lifting position P2.

[0052] (D) Modification 5 The structure in which the rotation of the movable member 70 is restricted at each of the single-body lifting position P1 and the traveling device lifting position P2 is not limited to the specific examples in FIGS. 2 to 10, and may be, for example, the following structure.

[0053] In the traveling device hoist 50 according to the first embodiment shown in FIGS. 3 and 4, when the hoist body 60 or the movable member 70 abuts against the abutting portion of the first rotation restricting portion 91, the movable member 70 disposed at the single-lifting position P1 is restricted from further rotating in the rotation direction D1 (see FIG. 3). However, the rotation of the movable member 70 disposed at the single-lifting position P1 may be restricted by inserting a pin through the insertion holes formed in the movable member 70 and the hoist body 60, respectively. Similarly, in the traveling device hoist 50 according to Modification 1 of the first embodiment shown in FIGS. 5 to 7, the rotation of the movable member 70 disposed at the single-lifting position P1 may be restricted by inserting a pin through the insertion holes formed in the movable member 70 and the hoist body 60, respectively.

[0054] Further, in the traveling device hoist 50 according to the second embodiment shown in FIGS. 8 to 10, the rotation of the movable member 70 disposed at the single-lifting position P1 may be restricted by inserting a pin through the insertion holes formed in the movable member 70 and the hoist body 60, respectively. The fitting portion 73A in the long hole 73 of the movable member 70 may be omitted.

[0055] Similarly, in the traveling device hoist 50 according to the second embodiment shown in FIGS. 8 to 10, the rotation of the movable member 70 disposed at the traveling device lifting position P2 may be restricted by inserting a pin through the insertion holes formed in the movable member 70 and the hoist body 60, respectively. The base-end side protruding portion 77 of the movable member 70 (specifically, the support surface 79 of the base-end side protruding portion 77) may be omitted.

[0056] (E) Modification 6 In the above embodiment, the traveling device is a crawler traveling device. However, the traveling device in the present disclosure does not necessarily have to be a crawler traveling device and may be other traveling devices.

[0057] (F) Modification 7 In the above embodiment, the construction machine 100 is a crane. However, the construction machine in the present disclosure may be other construction machines such as a shovel or a bulldozer.

Description of Signs

[0058] 10: Lower traveling body 11: Crawler traveling device (an example of a traveling device) 12: Lower frame 13: Crawler frame 16: Fixed part 50: Traveling device sling 60: Sling body 61: Fixing part 62: Insertion hole 63: Shaft member 64: Support part 70: Movable member 71: Attachment part 72: Insertion hole 73: Long hole (an example of a hole) 73A: Fitting part 78: Connecting member 90: Fixing member 91: First rotation limiting part 92: Second rotation limiting part 93: Pin 94: Fixing member 100: Construction machine 200: Hoisting device 201: Rope 202: Shackle D1: Rotation direction P1: Single lifting position P2: Traveling device lifting position

Claims

1. A traveling device hoist for lifting a traveling device of a construction machine, comprising: at least one hoist body having a fixing portion detachably fixed to the traveling device; at least one movable member having an attachment portion for attaching a hoisting device and supported by the hoist body; The movable member is configured to be displaceable relative to the hoist body between a single-lifting position, which is a position for lifting the traveling device hoist alone, and a traveling-device lifting position, which is a position for lifting the traveling device hoist and the traveling device.

2. The traveling device hoist according to claim 1, wherein the movable member is rotatably supported relative to the hoist body.

3. The traveling device hoist according to claim 2, further comprising a first rotation restricting portion that restricts further rotation in the rotation direction when the movable member is displaced from the traveling device lifting position to the single-lifting position in a state where the movable member is disposed at the single-lifting position.

4. The traveling device hoist according to claim 2, further comprising a second rotation restricting portion that restricts rotation of the movable member relative to the hoist body in a state where the movable member is disposed at the traveling device lifting position.

5. Each of the hoist body and the movable member has an insertion hole. The traveling device hoist according to claim 4, wherein the second rotation restricting portion includes a pin inserted through the insertion hole of the hoist body and the insertion hole of the movable member in a state where the movable member is disposed at the traveling device lifting position.

6. The traveling device hoist according to claim 1, wherein the movable member is slidably supported relative to the hoist body.

7. One of the hoist body and the movable member has a hole or groove formed along the one member to allow sliding of the movable member relative to the hoist body. The traveling device hoist according to claim 6, wherein the other of the hoist body and the movable member has a shaft member displaceable along the hole or groove.

8. The traveling device hoist according to claim 7, wherein the hole or groove has a fitting portion into which at least a part of the shaft member fits in a state where the movable member is disposed at the single-lifting position.

9. The at least one movable member includes a first movable member, a second movable member, and a connecting member that connects the first movable member and the second movable member, the traveling device hoist according to claim 1.

10. The at least one movable member includes a first movable member and a second movable member, the first movable member and the second movable member are arranged at intervals from each other, each of the first movable member and the second movable member is constituted by a single plate-like member, the traveling device hoist according to claim 1.

11. A traveling device lifting method for lifting the traveling device using the traveling device hoist according to any one of claims 1 to 10, lifting the traveling device hoist using the lifting device in a state where the movable member is disposed at the single lifting position; lifting the traveling device hoist and the traveling device using the lifting device in a state where the movable member is disposed at the traveling device lifting position, the traveling device lifting method including.

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