Lifting equipment

Abstract

The purpose is to suspend the object without tilting its posture. [Solution] The present invention is a sling 10 for suspending an object 100, characterized by having a connection part 20 that connects the sling 10 to a suspension base 120, a holding part 30 that holds the object 100, and an adjustment part 50 that adjusts the posture of the object 100 held by the holding part 30 by changing the relative position of the holding part 30 to the connection part 20 in an approximately horizontal direction according to the center of gravity of the object 100.

Description

[Technical Field]

[0001] The present invention relates to a lifting device. [Background technology]

[0002] Conventionally, a sling has been used to suspend a heavy object. Patent Document 1 discloses a sling in which one end of a roller chain is pivotally attached to one left-right end of a base plate to which a hanging handle is attached, and the other end of the roller chain is connected to a fastener provided at the other left-right end of the base plate. With the sling in Patent Document 1, after an object is inserted into the loop of the roller chain, the fastener is tightened to press the roller chain against the outer periphery of the object, thereby holding the object firmly in place and preventing it from falling off. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-62106 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when attempting to suspend an object with an unbalanced center of gravity using the sling of Patent Document 1, there is a risk that the object will be suspended in a tilted position. If the tilted position of the object makes subsequent work difficult, it will be necessary to repeatedly change the position on the floor where the suspended object is held and then resuspend and check the object until the suspended object no longer tilts, which poses a problem of being unable to improve work efficiency.

[0005] The present invention was made in consideration of the above-mentioned problems, and aims to suspend an object without tilting its posture. [Means for solving the problem]

[0006] The present invention is a sling for suspending an object, characterized by comprising a connection part that connects the sling to a suspension point, a holding part that holds the object, and an adjustment part that adjusts the posture of the object held by the holding part by changing the relative position of the holding part with respect to the connection part in a substantially horizontal direction according to the center of gravity of the object. [Effects of the Invention]

[0007] According to this invention, the object can be suspended without tilting. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an example of the overall configuration of a suspender according to a first embodiment. FIG. [Figure 2] FIG. 10 is a diagram illustrating an example of the configuration of a sling. [Figure 3] FIG. 10 is a perspective view showing an example of the configuration of the upper side of the suspender. [Figure 4] FIG. 2 is a perspective view showing an example of the configuration of the periphery of a lower base portion of a sling device. [Figure 5] FIG. 2 is a perspective view showing an example of the configuration of a tightening portion of a sling. [Figure 6] FIG. 10 is a diagram for explaining a method of hanging using a hanging tool. [Figure 7] FIG. 10 is a perspective view showing an example of the overall configuration of a suspender according to a second embodiment. [Figure 8] FIG. 10 is a diagram illustrating an example of the configuration of a sling. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a suspension device according to an embodiment of the present invention will be described with reference to the drawings. First Embodiment FIG. 1 is a perspective view showing an example of the overall configuration of a suspender 10 of the first embodiment. For ease of explanation, arrows are used to indicate front, back, right, and left in each of the figures, including FIG. 1. FIG. 1 also shows an example in which the suspender 10 suspends a bevel gear 100 as an object. Here, the suspended bevel gear 100 is gradually transported rearward, and a shaft member 110 is shrink-fitted into a hole 103 of the bevel gear 100 to form an integral structure.

[0010] The bevel gear 100 has a gear portion 101 located on the front side and a cylindrical portion 102 located on the rear side. The gear portion 101 has a generally truncated cone shape with a diameter that decreases toward the front. On the other hand, the cylindrical portion 102 is formed integrally with the rear surface of the gear portion 101 and has a constant diameter from the front end to the rear end, which is smaller than the diameter of the gear portion 101. The bevel gear 100 also has a hole 103 that penetrates the gear portion 101 and the cylindrical portion 102 in the front-to-rear direction. A key groove 104 into which a key (not shown) is fitted is formed on the inner peripheral surface of the hole 103. As such, the bevel gear 100 is not symmetrical in the front-to-rear direction, and the center of gravity is biased forward from the center in the front-to-rear direction. The shaft member 110 is shaped like a shaft that is long in the front-rear direction, and has a key groove 111 formed on its outer circumferential surface that faces the key groove 104 of the bevel gear 100 when the shaft member 110 is fitted into the hole 103 of the bevel gear 100 .

[0011] When suspending the bevel gear 100 with the suspending tool 10, the suspending tool holds not the gear portion 101 but the cylindrical portion 102, which has a constant diameter from the front end to the rear end. At this time, by holding the bevel gear 100 so that the central axis Og of the bevel gear 100 and the central axis Os of the shaft member 110 are horizontal and their central axes are approximately aligned, the task of fitting the shaft member 110 into the hole 103 of the bevel gear 100 can be easily performed.

[0012] The suspending tool 10 of this embodiment can suspend the bevel gear 100 with the central axis Og kept horizontal so that the posture of the bevel gear 100 does not tilt, even if the bevel gear 100 has an offset center of gravity.

[0013] The specific configuration of the sling device 10 will be described below. [Main components of the lifting device 10] Fig. 2 is a diagram showing an example of the configuration of the suspender 10. Fig. 2(a) is a side view of the suspender 10, and Fig. 2(b) is a view of the suspender 10 as seen from the rear. Fig. 3 is a perspective view showing an example of the configuration of the upper side of the suspender 10. The hoisting device 10 has a connection part 20 that connects the hoisting device 10 to the hoisting base, a holding part 30 that holds the bevel gear 100, and an adjustment part 50 that adjusts the posture of the bevel gear 100 held by the holding part 30 by changing the relative position of the holding part 30 with respect to the connection part 20 at least in the horizontal direction according to the center of gravity of the bevel gear 100.

[0014] [Configuration of connection part 20] The connection part 20 is a part that connects the sling 10 to the hook 120 that is the sling source. Connection part 20 is located above the entire sling device 10, and includes a hook part 21 and an axial member 22. Hook part 21 is roughly U-shaped, and connects to hook 120 by being hooked onto it. By connecting hook part 21 to hook 120, the entire sling device 10 is suspended from hook 120. Axis member 22 is long in the left-right direction, and is detachably attached to the lower end of hook part 21. Axis member 22 is also connected to moving part 55 of adjustment part 50, which will be described later. Connection part 20 can be, for example, a shackle.

[0015] [Configuration of holding unit 30] The holding portion 30 is a portion that holds the cylindrical portion 102 of the bevel gear 100. The holding part 30 is located below the entire sling 10, and has a base part 31, a chain part 35, a tightening part 40, and a fixing member 49 (see FIG. 4 described later).

[0016] The base 31 is a base portion of the holding unit 30 and includes an upper base 32a having a generally plate-like shape extending in the vertical direction and a lower base 32b having a generally block-like shape extending in the left-right direction. The upper base 32a ensures a vertical separation between the gear portion 101 of the bevel gear 100 and the adjustment unit 50 so that they do not come into contact when the bevel gear 100 is suspended by the hoist 10. A fixing member 49 is connected to the lower end of the upper base 32a by a wire 48 (see FIG. 4). The lower base 32b is integrally joined to the lower end of the upper base 32a. A tightening unit 40 is connected to the left end of the lower base 32b via a hinge unit 39, and the other end of the chain unit 35 is detachably fixed to the right end of the lower base 32b.

[0017] Fig. 4 is a perspective view showing an example of the configuration of the periphery of the lower base part 32b of the base part 31. Fig. 4(a) is a diagram showing the state before the chain part 35 is fixed to the lower base part 32b, and Fig. 4(b) is a diagram showing the state after the chain part 35 is fixed to the lower base part 32b. As shown in Figure 4(a), an insertion hole 33 is formed in the right end of the lower base 32b, through which the chain part 35 is inserted in the up-down direction. On both the left and right sides of the insertion hole 33 in the lower base 32b, a pair of fixing holes 34 are formed that communicate in the left-right direction and cross the insertion hole 33. Rod-shaped fixing members 49 connected to wires 48 can be inserted into the pair of fixing holes 34 from the right side of the lower base 32b.

[0018] The chain portion 35 holds the cylindrical portion 102 of the bevel gear 100. The chain portion 35 is long and has a length that allows it to be wound around the cylindrical portion 102 of the bevel gear 100 in the circumferential direction of the outer circumferential surface. One longitudinal end of the chain portion 35 is connected to the lower base portion 32b via a tightening portion 40, and the other longitudinal end of the chain portion 35 is detachably fixed to the lower base portion 32b of the base 31.

[0019] As shown in FIG. 4(a), the chain portion 35 is configured such that a pair of opposing plates 36 form a unit 37, and adjacent units 37 are rotatably connected to each other via shafts 38. A gap G is formed between adjacent shafts 38, and the size of the gap G is larger than the diameter of the fixing member 49. Therefore, as shown in FIG. 4(b), the other end of the chain portion 35 is inserted into the insertion hole 33 of the lower base 32b, and a fixing member 49 is inserted through the fixing hole 34 into any gap G that communicates with a pair of fixing holes 34, thereby fixing the chain portion 35 to the lower base 32b at any position. The fixing member 49 can be inserted into and removed from a pair of fixing holes 34 in the lower base portion 32 b of the base portion 31 .

[0020] The fastening portion 40 firmly fastens the chain portion 35 wound around the cylindrical portion 102 of the bevel gear 100. The fastening portion 40 is located between the left end of the lower base portion 32b and one end of the chain portion 35 in the longitudinal direction. Fig. 5 is a perspective view showing an example of the configuration around the tightening portion 40. Fig. 5(a) is a diagram showing the tightening portion 40 in an exploded state, and Fig. 5(b) is a diagram showing the tightening portion 40 in an assembled state. As shown in Figure 5(a), the tightening portion 40 has a tightening bolt portion 41 connected to the lower base portion 32b, a sliding portion 44 to which one longitudinal end of the chain portion 35 is connected, and a tightening operating portion 45 that is screwed onto the tightening bolt portion 41.

[0021] The tightening bolt 41 is rotatably connected to the left end of the lower base 32b via a hinge 39. The tightening bolt 41 has a base end side 42 and a tip end side 43 that are different colors. Specifically, the outer circumferential surface of the base end side 42 is a first color, and the outer circumferential surface of the tip end side 43 is a second color different from the first color. The outer circumferential surfaces of the base end side 42 and the tip end side 43 need only be configured so that the boundary between them is easily distinguishable. For example, only the outer circumferential surface of the base end side 42 may be colored. The sliding portion 44 is generally ring-shaped with an inner diameter larger than the outer diameter of the tightening bolt 41. The sliding portion 44 is slidable along the tightening bolt 41 with the tightening bolt 41 inserted therein. The tightening operation portion 45 is generally cylindrical, into which the tightening bolt 41 can be inserted, and a nut portion 46 is joined to the right end. A rod-shaped handle 47, which is perpendicular to the axial direction of the tightening operation part 45, is slidably inserted into the left end of the tightening operation part 45. An operator can rotate the tightening operation part 45 about the axis by placing a hand on the handle 47 and rotating it. The sliding part 44 and the tightening operation part 45 may be integrally configured so as to be able to rotate freely relative to each other.

[0022] [Configuration of adjustment unit 50] The adjustment portion 50 is a portion that adjusts the posture of the bevel gear 100 held by the holding portion 30 by changing the relative position of the holding portion 30 with respect to the connection portion 20 at least in the horizontal direction according to the center of gravity of the bevel gear 100. The adjustment portion 50 is located between the connection portion 20 and the holding portion 30 and has a frame portion 51 , an adjustment bolt portion 53 , and a moving portion 55 .

[0023] The frame portion 51 rotatably holds the adjustment bolt portion 53 and guides its movement by the moving portion 55. As shown in FIG. 3, the frame portion 51 is integrally joined to the upper end of the upper base portion 32b of the base portion 31 and is disposed so as to protrude forward from the upper base portion 32b. The frame portion 51 is elongated in the front-to-rear direction and has a generally frame-like shape with an internal space. Specifically, the frame portion 51 has an upper frame portion 52a and a lower frame portion 52b that face each other vertically across a space, and a front frame portion 52c and a rear frame portion 52d that face each other vertically.

[0024] Adjustment bolt portion 53 is disposed within the space of frame portion 51 and is rotatably supported by front frame portion 52c and rear frame portion 52d. The rear end of adjustment bolt portion 53 protrudes from rear frame portion 52d of frame portion 51, and a rod-shaped handle portion 54 that is perpendicular to the axial direction of adjustment bolt portion 53 is connected to the rear end. An operator can rotate adjustment bolt portion 53 about its axis by placing their hand on handle portion 54 and rotating it.

[0025] The moving part 55 moves in the front-to-rear direction of the frame part 51 by being guided by the frame part 51. The moving part 55 has a substantially block-shaped main body part 56 and a connecting part 59 protruding upward from the main body part 56. A screw hole 57 penetrating the main body part 56 in the front-to-rear direction is drilled, and the adjustment bolt part 53 is screwed into the main body part 56. A through hole 58 penetrating the main body part 56 in the front-to-rear direction is drilled above the screw hole 57, and the upper frame part 52a of the frame part 51 is inserted through the through hole 58. Meanwhile, the connecting part 59 has a connecting hole 60 penetrating the left-to-right direction, and the shaft member 22 of the connecting part 20 described above is inserted through the connecting hole 60, allowing the moving part 55 to be connected to the connecting part 20.

[0026] When the worker rotates the adjustment bolt portion 53 about its axis in a first direction, the force is converted into a forward thrust force by the screw hole 57, and the moving portion 55 moves toward the front side relative to the frame portion 51. Conversely, when the worker rotates the adjustment bolt portion 53 about its axis in a second direction opposite to the first direction, the force is converted into a rearward thrust force by the screw hole 57, and the moving portion 55 moves toward the rear side relative to the frame portion 51. Therefore, the relative position of the holding portion 30 with respect to the connection portion 20 can be changed by moving the moving portion 55 in the front-to-rear direction.

[0027] [Hanging method using the hanging device 10] Next, a method for suspending the bevel gear 100 without tilting its posture using the suspending tool 10 configured as described above in order to shrink-fit the bevel gear 100 and the shaft member 110 will be described. First, the worker wraps the chain portion 35 of the holding portion 30 around the outer peripheral surface of the cylindrical portion 102 of the bevel gear 100, which has been placed on the floor and heated, so that it is in close contact with the circumferential direction, and then inserts the other end of the chain portion 35 into the insertion hole 33 of the lower base portion 32b.

[0028] Next, the worker fixes the chain part 35 to the lower base part 32b by inserting the fixing member 49 through the fixing holes 34 into the gap G between the shaft parts 38 of the chain part 35 that communicates with the pair of fixing holes 34. Therefore, the chain part 35 is fixed in a state where it is wrapped around the cylindrical part 102 of the bevel gear 100.

[0029] Next, the worker rotates the tightening operation part 45 of the tightening part 40 in one direction, whereby the sliding part 44 is pressed by the tightening operation part 45 and gradually slides toward the base end of the tightening bolt part 41, and one end of the chain part 35 connected to the sliding part 44 also moves toward the base end of the tightening bolt part 41 in conjunction with the sliding part 44. Therefore, the chain part 35 comes into even closer contact with the outer peripheral surface of the cylindrical part 102 of the bevel gear 100, and the cylindrical part 102 of the bevel gear 100 is firmly tightened with the chain part 35 wrapped around it. In this way, the worker can use the holding part 30 to hold the cylindrical part 102 of the bevel gear 100.

[0030] Next, the worker lowers the hook 120 and then hooks the hook portion 21 of the connection portion 20 onto the hook 120. Next, by gradually raising the hook 120, the bevel gear 100 is lifted off the floor surface, and the bevel gear 100 can be suspended by the lifting tool 10.

[0031] Fig. 6(a) is a side view showing an example of the state immediately after the bevel gear 100 is suspended by the suspending tool 10. In the state of Fig. 6(a), due to the influence of the offset of the center of gravity of the bevel gear 100, the central axis Og of the bevel gear 100 is not horizontal but is suspended in an inclined position so that it is diagonally upward and forward. In this state, the worker rotates adjustment bolt portion 53 of adjustment unit 50 of hoisting device 10 in a second direction about the axis, thereby moving movable portion 55 rearward relative to frame portion 51. By moving movable portion 55 in this manner, the relative position of holding portion 30 with respect to connection portion 20 is changed so that it approaches a substantially horizontal direction, in this case, a substantially front-to-rear direction. Therefore, the center of gravity position including bevel gear 100 below connection portion 20 gradually shifts forward, and hoisting device 10 including bevel gear 100 below connection portion 20 swings in the direction of arrow A around shaft member 22 of connection portion 20, so that the attitude of bevel gear 100 can be adjusted so that central axis Og is horizontal.

[0032] Fig. 6(b) is a side view showing an example of a state after the bevel gear 100 is suspended by the suspending tool 10 and the posture of the bevel gear 100 has been adjusted. In the state of Fig. 6(b), the bevel gear 100 is suspended so that the central axis Og of the bevel gear 100 is horizontal and the central axis Og of the bevel gear 100 and the central axis Os of the shaft member 110 are substantially aligned. Finally, the worker moves the bevel gear 100 little by little toward the rear in the direction of arrow B while keeping the central axis Og of the bevel gear 100 horizontal, and fits the shaft member 110 into the hole 103 of the bevel gear 100, thereby easily integrating the bevel gear 100 and the shaft member 110.

[0033] As described above, with the suspending tool 10 of this embodiment, the posture of the bevel gear 100 can be adjusted so that the central axis Og is horizontal while the bevel gear 100 is suspended, which eliminates the need to repeatedly change the position on the floor where the bevel gear 100 is held, then suspend it and check the posture, thereby improving work efficiency. In particular, when shrink-fitting the bevel gear 100 and the shaft member 110, the posture of the bevel gear 100 can be adjusted in a short time, which allows the shaft member 110 to be fitted before the heated bevel gear 100 cools.

[0034] Furthermore, after fitting the hole 103 of the bevel gear 100 into the shaft member 110, if it is desired to release the bevel gear 100 from the holding part 30, the operator rotates the fastening operation part 45 of the fastening part 40 in the other direction to loosen the fastening by the chain part 35, and then pulls out the fixing member 49 from the fixing hole 34 of the base part 31. Therefore, the chain part 35 wound around the cylindrical part 102 of the bevel gear 100 can be removed from the base part 31, and the holding of the bevel gear 100 by the holding part 30 can be released.

[0035] Note that, if the worker confirms while rotating the tightening operation part 45 of the tightening part 40 in the other direction that the color of the outer surface of the tightening bolt part 41 has changed to the second color of the tip side 43 (that is, the boundary between the base end side 42 and the tip side 43 has been passed in the direction of loosening the tightening by the chain part 35), the worker ends the rotation operation. The second color of the tip side 43 indicates that the length of engagement between the tightening operation part 45 and the tightening bolt part 41 is short, and ending the rotation operation can prevent the tightening operation part 45 from falling out of the tightening bolt part 41.

[0036] As described above, the hoisting device 10 of this embodiment has a connection part 20 that connects the hoisting device 10 to the hook 120, a holding part 30 that holds the bevel gear 100, and an adjustment part 50 that adjusts the posture of the bevel gear 100 held by the holding part 30. Therefore, by using the adjustment part 50 to change the relative position of the holding part 30 with respect to the connection part 20 in the approximately front-to-rear direction according to the center of gravity of the bevel gear 100, the worker can suspend the bevel gear 100 without tilting its posture.

[0037] Furthermore, according to the suspender 10 of this embodiment, the adjustment unit 50 has an adjustment bolt unit 53 that is turned by the user, and a moving unit 55 that is threadedly engaged with the adjustment bolt unit 53 and coupled to the connection unit 20. Therefore, the relative position of the moving unit 55 with respect to the holding unit 30 is continuously changed as the user turns the adjustment bolt unit 53, thereby enabling the posture of the bevel gear 100 to be adjusted with high precision.

[0038] Furthermore, according to the sling device 10 of this embodiment, the holding part 30 has a base 31 provided with a fixing hole 34, a chain part 35 connected to the base 31 and wound around the cylindrical part 102 of the bevel gear 100, and a fixing member 49 inserted into gaps G between the shaft parts 38 formed in the chain part 35 that communicate with the fixing hole 34. Therefore, the fixing member 49 can be inserted into any gap G between the shaft parts 38, and therefore bevel gears 100 of different sizes can be easily held by the holding part 30.

[0039] Furthermore, according to the sling device 10 of this embodiment, the tightening portion 40, located between the base portion 31 and the chain portion 35, has a tightening bolt portion 41 connected to the base portion 31, and a tightening operation portion 45 connected to one end of the chain portion 35, threadedly engaged with the tightening bolt portion 41, and turned by the user. Therefore, by turning the tightening operation portion 45 with the chain portion 35 wound around the cylindrical portion 102 of the bevel gear 100, the bevel gear 100 can be firmly tightened by the holding portion 30.

[0040] <Second embodiment> In the second embodiment, an adjustment unit 150 will be described that gradually changes the relative position of a moving unit 55 with respect to a holding unit 30. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted as appropriate. Fig. 7 is a perspective view showing an example of the overall configuration of the suspender 11 of the second embodiment. Fig. 8 is a side view of the suspender 11. The suspender 11 has an adjustment unit 150 that adjusts the posture of the bevel gear 100 held by the holding unit 30.

[0041] [Configuration of adjustment unit 150] The adjustment unit 150 is located between the connection unit 20 and the holding unit 30. Specifically, the adjustment unit 150 has a substantially plate-shaped frame unit 151 that is integrally joined to the upper base unit 32a of the base unit 31. The frame unit 151 is arranged to protrude forward from the upper base unit 32b. A plurality of (seven in this example) connecting holes 152 that penetrate in the left-right direction are drilled in the frame unit 151. The connecting holes 152 are positioned at predetermined intervals in the front-rear direction, and the adjustment unit 150 can be connected to the connection unit 20 by inserting the shaft member 22 of the connection unit 20 into any of the connecting holes 152.

[0042] [Hanging method using hanging device 11] Next, a method for suspending the bevel gear 100 without tilting its posture using the suspending tool 11 configured as described above in order to shrink-fit the bevel gear 100 and the shaft member 110 will be described. First, as in the first embodiment, the worker holds the cylindrical portion 102 of the bevel gear 100 using the holding portion 30. Next, the worker connects the adjustment portion 150 to the connection portion 20 by inserting the shaft member 22 of the connection portion 20 into any one of the multiple connecting holes 152 of the frame portion 151 of the adjustment portion 150.

[0043] Next, the worker lowers the hook 120 and hooks the hook portion 21 of the connection portion 20 onto the hook 120. Next, by gradually raising the hook 120, the bevel gear 100 is lifted off the floor surface, and the bevel gear 100 can be suspended by the lifting tool 11.

[0044] At this time, if the central axis Og of the bevel gear 100 is not horizontal and the attitude of the bevel gear 100 is tilted, the hook 120 is lowered again to place the bevel gear 100 on the floor, and then the connecting hole 152 through which the shaft member 22 of the connection part 20 is inserted is changed depending on the state of the tilt. The worker can adjust the attitude of the bevel gear 100 in a stepwise manner by again suspending the bevel gear 100 with the hoisting tool 11 and changing the connecting hole 152 through which the shaft member 22 is inserted until the central axis Og becomes horizontal.

[0045] In this way, in the hanging device 11 of this embodiment, the posture of the bevel gear 100 can be adjusted by changing the connecting hole 152 through which the shaft member 22 of the connection portion 20 is inserted and changing the relative position of the holding portion 30 to the connection portion 20 in the approximately front-to-rear direction, so that the bevel gear 100 can be hung without tilting.

[0046] Although the present invention has been described above with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments and can be modified within the scope of the present invention.

[0047] In the above-described embodiment, the case of suspending the bevel gear 100 has been described, but the present invention is not limited to this case, and an object other than the bevel gear 100 may be suspended as long as it can be held by the holding part 30. Furthermore, the object suspended by the suspenders 10 and 11 is not limited to an object with an offset center of gravity, and may be an object with an even center of gravity.

[0048] In the above-described embodiment, the adjustment units 50, 150 adjust the posture of the bevel gear 100 by changing the relative position of the holding unit 30 with respect to the connecting unit 20 in approximately the front-to-rear direction. However, this is not limited to this case, and the posture of the bevel gear 100 may be adjusted by changing the relative position of the holding unit 30 with respect to the connecting unit 20 in approximately the horizontal direction, such as approximately the left-to-right direction.

[0049] Furthermore, in the suspending devices 10 and 11 of the above-described embodiments, a spirit level may be attached to the base 31, the adjustment unit 50, 150, or the like. By checking the spirit level, the worker can easily determine whether the posture of the object suspended by the suspending device 10, 11 is tilted or not. [Explanation of symbols]

[0050] 10, 11: Lifting tool 20: Connection part 30: Holding part 31: Base part 32a: Upper base part 32b: Lower base part 35: Chain part 34: Fixing hole 40: Fastening part 41: Fastening bolt part 45: Fastening operation part 49: Fixing member 50, 150: Adjustment part 53: Adjustment bolt part 55: Moving part 100: Bevel gear (object) 101: Gear part 102: Cylindrical part 103: Hole 110: Shaft part 120: Hook (hanging point)

Claims

1. A hanging device for hanging an object, a connection portion that connects the sling to a sling base; a holding unit that holds the object; an adjustment unit that adjusts the posture of the object held by the holding unit by changing the relative position of the holding unit with respect to the connection unit in a substantially horizontal direction in accordance with the center of gravity of the object.

2. The adjustment unit an adjustment bolt portion that is turned by a user; a moving portion that is threadedly engaged with the adjustment bolt portion and coupled to the connection portion, The suspension device according to claim 1, characterized in that the posture of the object held by the holding part is adjusted by continuously changing the relative position of the moving part with respect to the holding part in response to the user rotating the adjustment bolt part.

3. The holding portion is a base portion provided with a fixing hole; a chain portion connected to the base portion and wound around the object; 3. The sling according to claim 1, further comprising a fixing member inserted into a gap formed between the shaft portions of the chain portion that communicates with the fixing hole.

4. the holding portion has a fastening portion located between the base portion and the chain portion, The tightening portion is a tightening bolt portion connected to the base portion; 4. The sling according to claim 3, further comprising a tightening operation part connected to one end of the chain part, threadedly engaged with the tightening bolt part, and turned by a user.

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