Heavy object mounting device and heavy object mounting method

Abstract

To provide a mounting device and a mounting method for heavy objects, which do not limit working height when mounting earthquake-resistant brackets on a bridge girder or the like in earthquake-resistant reinforcement work, do not have the problem that the tip of the crane cannot move to the mounting position because it hits the underside of the bridge girder when a bracket is lifted by a crane, and do not require mounting work without using a crane by setting up a work stand in the space below the bridge girder or temporarily placing brackets.SOLUTION: A device for mounting heavy objects to a position near a restricted height surface includes a rod-shaped jig body, a fixing member attached to its tip, a mounting section attached in the longitudinal direction of the body, a detachable locking body, and equipment for locking and lifting the body; the mounting section at which the body can be lifted while the object is fixed is selected to mount the locking body, and the body is lifted using the mounting position as a fulcrum, so that the fixing member is positioned higher than the tip of the equipment, allowing the object to be mounted without the tip coming into contact with the restricted height surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device and method for attaching a heavy attachment, and in particular to a device and method for attaching a heavy attachment that can ensure safety and improve workability in attaching heavy attachments such as earthquake-resistant brackets, for example, moving the heavy attachment and adjusting its attachment position, in environments where the working height is limited by the presence of bridge girders, such as when attaching earthquake-resistant brackets to bridge girders and piers in earthquake-resistant reinforcement work on bridges and viaducts. [Background technology]

[0002] In earthquake reinforcement work on bridges or viaducts, for example, when attaching earthquake-resistant brackets to bridge girders or piers, the presence of the bridge girders limits the working height when attaching the earthquake-resistant bracket. In other words, even if an attempt is made to lift an earthquake-resistant bracket with a crane and move it to an installation position near the restricted height plane that limits the working height, the tip of the lifting equipment such as a crane hits the underside of the bridge girder, which is the restricted height plane, and because of the hanging slack of the hook, it is not possible to move the lifted heavy object to the desired installation position.

[0003] Therefore, in the past, a work platform was set up in the space below the bridge girder, and earthquake-resistant brackets were temporarily placed on the work platform after being lifted by a crane.The earthquake-resistant brackets were then attached to the designated mounting positions from the temporary work platform using manpower and other equipment without using a crane.However, this work required a lot of manpower and equipment, and the work itself was extremely time-consuming.

[0004] Incidentally, one known installation technique of this type is to use a crane to lift steel material with an earthquake-resistant bracket attached to the tip in a horizontal position in a work space secured outside the bridge girder to the installation height (Patent Publication No. 2020-084634).

[0005] However, the method of JP 2020-084634 A cannot be applied to sites where, for example, houses or facilities are adjacent and work space cannot be secured outside the girder.

[0006] Therefore, there was a demand for a heavy attachment mounting device and a heavy attachment mounting method that could efficiently and safely mount heavy attachments (such as earthquake-resistant brackets) at mounting positions that are higher than the tip (hook) of lifting equipment such as a crane in environments where working height is limited. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2020-084634 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above-mentioned conventional demands, and aims to provide a mounting device and a method for a heavy object that, for example, when attaching earthquake-resistant brackets to bridge girders or piers in earthquake-proof reinforcement work for bridges or viaducts, does not limit the working height at which the earthquake-resistant bracket can be attached due to the presence of the bridge girders, and therefore does not have the problem of the tip 15 of the crane hitting the underside of the bridge girder, preventing it from being moved to the mounting position when the earthquake-resistant bracket is lifted by a crane or the like, and unlike the conventional method of installing a workbench in the space below the bridge girder, temporarily placing the earthquake-resistant bracket on this workbench, and then using manpower and other equipment to install the earthquake-resistant bracket from the temporary workbench to the mounting position, without using a crane. [Means for solving the problem]

[0009] The present invention provides A mounting device for mounting a heavy object at a position near a restricted height surface where the working height is restricted, The jig has a rod-shaped jig body, a fixing member provided at the tip of the jig body for fixing the heavy attachment, a plurality of attachment parts provided at intervals in the longitudinal direction of the jig body, a locking body that is detachably attached to the plurality of attachment parts, and lifting equipment that is locked to the locking body and lifts the jig body at a predetermined inclination angle, The mounting portion is selected so that the jig body can be lifted at a predetermined inclination angle with the heavy attachment fixed to the fixing member, a locking body is attached to the selected mounting portion, and the jig body is lifted using the attachment position of the locking body as a lifting fulcrum, so that the position of the fixing member is higher than the tip of the lifting equipment, and the heavy attachment can be mounted without the tip of the lifting equipment coming into contact with the limited height surface. It is characterized by the fact that or A weight is attached to the longitudinal base end side of the jig body. It is characterized by the fact that or The mounting portion is a mounting hole, and the locking body is a hook member fitted into the mounting hole. It is characterized by the fact that or A method for attaching a heavy attachment to a position near a restricted height surface where the working height is restricted, A heavy attachment is fixed to the tip of a jig body in the form of a steel rod, and when the heavy attachment is fixed and lifted by lifting equipment, the jig body is lifted by setting a lifting fulcrum at a location in the longitudinal direction of the jig body so that the fixed heavy attachment is positioned above the tip of the lifting equipment, and the heavy attachment can be attached to a position near the limited working height. It is characterized by the fact that or A method for attaching a heavy attachment to a position near a restricted height surface where the working height is restricted, A heavy attachment is fixed to the tip of a jig body in the form of a steel rod, and when the jig body is lifted with lifting equipment while the heavy attachment is fixed, a first lifting fulcrum is set at a longitudinal location of the jig body so that the jig body is in an inclined state with the fixed heavy attachment positioned above the tip of the lifting equipment, and after the heavy attachment is attached to a position near the limited working height, a second lifting fulcrum is set on the jig body when the heavy attachment is detached from the jig body, and the jig body without the heavy attachment is lifted at the second lifting fulcrum in an inclined state with the lifting balance of the jig body. It is characterized by the following. [Effects of the Invention]

[0010] According to the present invention, for example, when attaching earthquake-resistant brackets to bridge girders or piers in earthquake-proof reinforcement work for bridges or viaducts, the presence of the bridge girders does not limit the working height at which the earthquake-resistant bracket can be attached. Therefore, even if an earthquake-resistant bracket is lifted by a crane or other lifting equipment and then moved to the specified attachment position, there is no problem where the tip 15 of the crane hits the underside of the bridge girder, making it impossible to move it to the attachment position. This has the excellent effect of providing an attachment device and an attachment method for heavy attachments that do not require the conventional method of installing a workbench in the space below the bridge girder, temporarily placing the earthquake-resistant bracket on this workbench, and then attaching the earthquake-resistant bracket to the attachment position from the temporary workbench using manpower and other equipment without using a crane or the like. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is an explanatory diagram (1) illustrating the configuration of an embodiment of the present invention. [Figure 2] FIG. 2 is an explanatory diagram (2) illustrating the configuration of an embodiment according to the present invention. [Figure 3] FIG. 3 is an explanatory diagram (3) illustrating the configuration of an embodiment of the present invention. [Figure 4]FIG. 4 is an explanatory diagram (4) for explaining the configuration of an embodiment according to the present invention. [Figure 5] 1 is a schematic diagram illustrating a schematic configuration of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will now be described with reference to the embodiments shown in the drawings. The mounting device for a heavy attachment according to the present invention is configured as a mounting device and method for mounting a heavy attachment 2, which is an earthquake-resistant bracket, at a mounting position near a restricted height plane where the working height is restricted, for example, at the upper corner of a bridge girder 7 and a pier side wall 8 on the underside of the bridge girder 7.

[0013] Here, the mounting device of the present invention is composed of a jig body 1 in the shape of a long square bar, for example made of steel, a fixing member 3 on which a heavy mounting object 2, such as an earthquake-resistant bracket, is placed and fixed at the tip of the long square bar-shaped jig body 1, mounting holes configured as mounting portions 4 provided at equal intervals in the longitudinal direction of the top surface of the jig body 1, a locking body 5 configured as, for example, a lifting bracket that is detachably attached to the mounting portions 4 configured as the multiple mounting holes, and lifting equipment 6 that locks a hook 17 into the lifting portion of the locking body 5 and lifts the jig body 1 at a predetermined inclination angle.

[0014] Here, when lifting the jig body 1 with the lifting equipment 6, the mounting part 4 to be used as the lifting fulcrum must be selected so that the jig body 1 can be lifted by the lifting equipment 6 at a predetermined inclination angle with a heavy mounting object 2 such as an earthquake-resistant bracket fixed to the fixing member 3. This selection process is also a feature of the present invention, and its details will be explained later.

[0015] Next, a locking body 5 is attached to the selected mounting portion 4, and the jig body 1 is lifted up via the locking body 5 by a lifting device 6 with the selected mounting portion 4 as a lifting fulcrum.

[0016] In other words, when lifting, the tip of the lifting equipment 6, as explained in Figure 1, will attach the heavy attachment 2 such as the earthquake-resistant bracket to the upper corner between the bridge girder 7 and the pier side wall 8 without the tip 15 of the crane coming into contact with the restricted height surface where the working height is limited, i.e., the underside of the bridge girder 7 (see Figure 1).

[0017] Here, the structure of the fixing member 3 for fixing a heavy attachment 2 such as an earthquake-resistant bracket to the tip of the jig body 1 made of a long steel bar will be described with reference to FIG.

[0018] As can be seen from Figure 2, the fixing member 3 has a plate-shaped fixing holder 9 that extends out approximately horizontally at the tip of the jig body 1, and side holding plates 10 are provided on the left and right sides of the fixing holder 9, and these left and right side holding plates 10 are configured to be slidable outward in the left and right directions of the fixing holder 9.

[0019] Furthermore, the fixed holder 9 and the side holding plate 10 have a plurality of gripping devices 11 for gripping the heavy attachment 2, such as earthquake-resistant brackets, held by the fixed member 3. As shown in Figure 2, the earthquake-resistant bracket placed on the fixed member 3 is firmly gripped by the gripping devices 11 to the fixed holder 9 and the side holding plate 10, so that the earthquake-resistant bracket will never come off during lifting.

[0020] As shown in Figure 3, a plurality of mounting holes serving as mounting portions 4 are drilled at intervals along the longitudinal direction of the top surface of the long, rectangular bar-shaped jig body 1, and a hanging hardware serving as a locking body 5 can be detachably attached to a selected one of the plurality of mounting holes.

[0021] FIG. 3 shows a state in which the hanging metal fitting, which is the locking body 5, is detachably attached to the selected attachment portion 4 (attachment hole).

[0022] As shown in Figure 3, a locking body 5 (lifting hardware) is attached to the selected mounting portion 4 (mounting hole), and the mounting point of this lifting hardware is used as a lifting fulcrum and lifted by a crane hook 17, which is the lifting equipment 6, as shown in Figures 1 and 4.

[0023] 1 and 4, when lifted, the long rectangular jig body 1 is lifted at a predetermined angle with the attachment point of the lifting hardware (selected attachment part 4) as the lifting fulcrum. In other words, the position of the fixing member 3 provided at the tip of the jig body 1 is much higher than the tip 15 of the crane, which is the lifting equipment 6, so that the tip 15 of the crane, which is the lifting equipment 6, will not come into contact with the underside 16 of the bridge 7 when the heavy attachment 2 is moved to an attachment position higher than the hanging allowance of the crane hook 17.

[0024] Here, we will explain how to select the mounting part 4 that will serve as the appropriate lifting fulcrum when lifting. In the present invention, the selection of the mounting part 4 that will serve as the lifting fulcrum when lifting can be calculated by using an arithmetic device such as a computer. That is, by taking into consideration the weight of the heavy attachment 2 (earthquake-resistant bracket) attached to the fixing member 3 provided at the tip end of the jig body 1, the weight of the base end of the jig body 1, and the length of the jig body 1, it is possible to calculate from which mounting part 4 in the longitudinal direction of the jig body 1 the jig body 1 should be suspended so that the jig body 1 can be lifted at an appropriate inclination angle that will prevent the tip end 15 of the crane from contacting the underside 16 of the bridge 7.

[0025] Incidentally, after the earthquake-resistant bracket is attached to a predetermined attachment location, such as the underside 16 of the bridge girder 7, the weight of the fixed member 3 becomes extremely light (by the weight of the earthquake-resistant bracket detached from the fixed member 3). Therefore, after the earthquake-resistant bracket is attached, if the position of the attachment part 4, which was the lifting fulcrum when lifting, is not changed, the tilt state of the jig body 1 will change when the earthquake-resistant bracket is detached from the fixed member 3. For this reason, the calculation is performed again to calculate the appropriate attachment part 4, and the attachment part 4 is used as the second lifting fulcrum when lifting.

[0026] In FIG. 1 , reference numeral 12 denotes a tail fin formed to extend perpendicularly from the jig body 1. By providing this tail fin 12 on the longitudinal base end side of the jig body 1, the lifted posture of the jig body 1 can be made extremely stable. Specifically, the worker grasps this tail fin 12 to stabilize the lifted posture or to fine-tune the position of the earthquake-resistant bracket so that it faces the installation location. Furthermore, simply forming the horizontally extending tail fin 12 improves the lifting stability of the long, linear jig body 1. Furthermore, when lifting the jig body 1 placed on the ground and tilting it, or when placing the tilted jig body 1 on the ground, having the tail fin 12 touch the ground can suppress lateral wobble.

[0027] Reference numeral 13 denotes a weight provided on the base end side of the jig body 1. By providing the weight 13 on the base end side, even if a relatively heavy attachment 2, i.e., an earthquake-resistant bracket, is held and placed on the fixing member 3, the attachment part 4 can be selected as the lifting fulcrum so that the jig body 1 can be reliably lifted with a properly balanced tilt angle.

[0028] In other words, the weight of the weight bob 13 allows the jig body 1 to always be heavier at the base end than at the tip end where the heavy attachment 2 is mounted on the fixed member 3, making it easy to select the attachment part 4, and therefore, the selected attachment part 4 can be used as the lifting fulcrum and the lifting adjustment can be made so that the fixed member 3 is positioned above the tip of the lifting equipment 6 with an appropriately balanced inclination angle.

[0029] Next, a method for attaching a heavy attachment to a position near a restricted height surface where the working height is limited using the present invention will be described.

[0030] A heavy attachment 2 (earthquake-resistant bracket) is fixed to a fixing member 3 provided at the tip of a steel square rod-shaped jig body 1, and is attached to a position near a restricted height plane where the working height is restricted.

[0031] Next, a first lifting fulcrum is set by calculation to adjust the position so that when the heavy attachment 2 is lifted in a fixed state, the jig body 1 is in a predetermined appropriate inclination state, i.e., the heavy attachment 2 fixed to the fixing member 3 is positioned above the tip 15 of the lifting equipment 6 (crane) and higher than the hanging allowance of the hook 17. Then, a locking body 5 is attached to the attachment part 4 set at the first lifting fulcrum, and this point becomes the lifting fulcrum.

[0032] The heavy attachment 2 is lifted while fixed to the tip of the jig body 1, and the heavy attachment 2 fixed to the fixing member 3 of the jig body 1 like a seesaw is lifted to a position higher than the tip 15 of the crane, which is the lifting equipment 6, and attachment work is performed on the heavy attachment 2, for example, at a position near a restricted height plane where the working height of an earthquake-resistant bracket is restricted.

[0033] At this time, a worker on the ground can control the tail fin 12 up, down, left, and right to adjust the position of the heavy attachment 2 located at the tip of the jig body 1 relative to an attachment position formed, for example, at the upper corner between the bridge girder 7 and the bridge side surface 8. Therefore, even in an environment where the working height is limited, the work of attaching the heavy attachment 2 can be efficiently performed at an attachment position of the heavy attachment 2 that is higher than the position of the tip 15 of the crane.

[0034] After the heavy attachment 2 (earthquake-resistant bracket) is attached to the designated location, it is necessary to remove the heavy attachment 2 from the fixing member 3. Even at this time, the jig body 1 must be lifted while being maintained in the inclined position.

[0035] By detaching the heavy attachment 2 from the fixing member 3, the tip of the jig body 1 becomes extremely light, and when lifted from the initial first lifting fulcrum, the jig body 1 will not be lifted at the predetermined, properly balanced tilt angle. There is also a risk that the jig body 1 will end up in an almost vertical position.

[0036] Therefore, in order to reconsider the lifting fulcrum, it becomes necessary to reselect the mounting part 4. That is, a selection calculation is performed again for the mounting part 4 to be used as the lifting fulcrum, and the reselection sets the second lifting fulcrum which is closer to the base end of the jig body 1 than the first lifting fulcrum.

[0037] In order to support the jig body 1 and ensure stability of the jig body 1 when the heavy attachment 2 is detached from the fixing member 3, a support member 14 is installed to support the base end of the jig body 1, as shown in Figure 1.

[0038] As configured above, by lifting the jig body 1 at an incline in a well-balanced manner, the heavy attachment 2 (earthquake-resistant bracket) placed on its tip can be easily lifted to a position higher than the tip 15 of the crane, and by operating the tail fin 12 provided on the base end side of the jig body 1, the anchor hole of the earthquake-resistant bracket held by the fixing member 3 can be aligned with the position of a protruding anchor at an attachment point provided, for example, at the upper corner between the bridge girder 7 and the side surface of the bridge 8, and the anchor can be inserted into the anchor hole, thereby easily adjusting the position and installing the earthquake-resistant bracket.

[0039] After the heavy attachment 2 (earthquake-resistant bracket) is attached to a predetermined attachment position, such as the underside 16 of the bridge girder 7, the lifting position is changed from the first lifting fulcrum to the second lifting fulcrum as described above, and the base end side of the jig main body 1 is supported by the support member 14, so that when the heavy attachment 2 is detached from the fixed member 3, the lifting balance of the jig main body 1 can be maintained without being disturbed.

[0040] Thus, according to the present invention, the work of attaching the heavy attachment 2 can be carried out safely and efficiently even in an environment where the working height is limited.

[0041] Here, the attachment of the heavy attachment 2 (earthquake-resistant bracket) to the fixing member 3 and the subsequent attachment of the heavy attachment 2 (earthquake-resistant bracket) to the attachment position will be described.

[0042] For example, the jig body 1 is placed in a temporary storage area. At the temporary storage area, the task of fixing the target heavy attachment 2 (earthquake-resistant bracket) to the fixing member 3 of the placed jig body 1 is performed.

[0043] When fixing an earthquake-resistant bracket to the fixed member 3, the position (widthwise spacing) of the side support plates 10 of the fixed member 3 is adjusted, and the earthquake-resistant bracket is fixed to the fixed holder 9 and the side support plates 10 using multiple gripping devices 11.

[0044] The position of the first lifting fulcrum is calculated, adjusted, and set according to the weight of the earthquake-resistant bracket so that with the jig body 1 lifted, the fixing member 3 gripping the earthquake-resistant bracket is in an inclined state positioned above the tip 15 of the lifting equipment 6. After that, the jig body 1 is lifted, for example by a crane, via the mounting part 4 set on this first lifting fulcrum.

[0045] At the start of lifting, the tail fins 12 extending on both sides from the jig body 1 are in contact with the ground, so that initial lifting can be performed with a stable lifting posture (left and right balance).

[0046] Then, the jig body 1 gradually tilts, and finally reaches a predetermined, properly balanced tilted state, and the entire jig body 1 is lifted up.

[0047] The jig body 1 in an inclined state is moved while being adjusted by a crane so that the earthquake-resistant bracket can be attached accurately to the attachment position.

[0048] Thereafter, for example, a ground worker controls the tail unit 12 and attaches the earthquake-resistant bracket to a predetermined attachment position while fine-tuning the attachment position of the earthquake-resistant bracket.

[0049] That is, multiple anchors protruding from mounting positions provided at the upper corners of the bridge girder 7 and the side of the bridge 8 are inserted into holes in the earthquake-resistant bracket, and then bolts are screwed into the inserted anchors to secure the earthquake-resistant bracket to the mounting positions provided at the upper corners of the bridge girder 7 and the side of the bridge 8.

[0050] Then, with the base end of the jig body 1 supported by the support member 14, the lifting position of the crane is changed from the first lifting fulcrum located in front of the jig body 1 in the longitudinal direction to the second lifting fulcrum, and the base end side of the jig body 1 is supported by the support member 14.

[0051] Next, the gripping tool 11 that fixed the earthquake-resistant bracket to the fixing member 3 is removed. Then, the jig body 1, which has been lifted by the mounting part 4 that serves as the newly set second lifting fulcrum, is moved, for example, to the temporary storage area. After being moved, the lifted jig body 1 is gradually lowered, and the base end side and the tail fin 12 side of the jig body 1 are placed on the ground of the temporary storage area, and the work is completed by gradually changing from an inclined state to a horizontal state and placing it in the temporary storage area.

[0052] (Conclusion) The features of the present invention will be described with reference to the schematic diagram of the invention shown in FIG.

[0053] In Figure 5, a heavy attachment 2 such as an earthquake-resistant bracket is fixed to the tip of a long rectangular rod-shaped jig body 1. A weight 13 is attached to the base end of the jig body 1. This weight 13 can be replaced with a weight 13 of a different weight.

[0054] A plurality of mounting sections 4, consisting of mounting holes or the like, are provided at predetermined intervals on the top surface of the jig body 1 in the longitudinal direction, and a locking body 5 having a lifting hardware is detachably attached to the mounting sections 4. As shown in Figure 5, when a heavy object 2 to be attached is fixed to the tip of the jig body 1, a hook 17 of a lifting device 6 is engaged with the locking body 5 connected to the mounting section 4 near the tip of the jig body 1, and the jig body 1 is lifted at a predetermined inclination to perform the attachment work.

[0055] When the work of attaching the heavy attachment 2 is completed, the heavy attachment will be detached from the tip of the jig body 1, and will not be lifted at the attachment part 4 near the tip of the jig body 1, i.e., the first lifting fulcrum. This is because the base end side where the weight 13 is attached will become extremely heavy, and there is a risk that the jig body 1 will tilt almost vertically.

[0056] Therefore, the mounting part 4 near the base end of the jig body 1 is used as the second lifting fulcrum, and the hook 17 of the lifting equipment 6 is engaged with the engaging body 5 connected to the mounting part 4, and the jig body 1 is lifted in a predetermined tilted state. By shifting the position of the lifting fulcrum in this way, the jig body 1 can be lifted in a stable tilted state.

[0057] As mentioned above, when selecting the mounting part 4 that will serve as the first lifting fulcrum and the mounting part 4 that will serve as the second lifting fulcrum, the selection can be made by calculation using an arithmetic device such as a computer based on numerical values ​​such as the weight of the heavy attachment 2, the weight of the weight bob 13, and the length of the jig body.

[0058] In this way, each selected mounting part 4 is used as the lifting fulcrum, so that whether a heavy mounting object 2 is mounted or removed, the long square rod-shaped jig body can be lifted in a predetermined, appropriate, stable inclination state.

[0059] Furthermore, since the jig body 1 is lifted in an appropriately stable inclined position, when the heavy attachment 2 is attached, the tip 15 of the lifting equipment 6 that lifts the jig body 1 will not come into contact with, for example, the underside 16 of the bridge girder 7, and the position of the heavy attachment 2, such as an earthquake-resistant bracket fixed to the tip of the jig body 1, will always be higher than the position of the tip 15 of the lifting equipment 6 that lifts the jig body 1, so the attachment work can be carried out stably. [Industrial Applicability]

[0060] This specification has mainly described an embodiment in which earthquake-resistant brackets are attached to the upper corners between the bridge girder 7 and the side surface of the bridge 8, but the present invention is not limited to this embodiment and is applicable to attachment work in environments where the height of the work space is limited, such as attachment work in low-headroom environments, under girders, in tunnels, in relation to power lines or nearby buildings, etc. [Explanation of symbols]

[0061] 1 Jig body 2 Heavy attachments 3 Fixing member 4 Mounting part 5 Locking body 6 Lifting equipment 7 Bridge girders 8 Bridge side 9 Fixed holder 10 Side retaining plate 11 Gripping tool 12 tail 13 Weight 14 Support member 15 Tip 16 Underside of bridge 17 Hook

Claims

1. A mounting device for mounting a heavy object at a position near a restricted height surface where the working height is restricted, The jig has a rod-shaped jig body, a fixing member provided at the tip of the jig body for fixing the heavy attachment, a plurality of attachment parts provided at intervals in the longitudinal direction of the jig body, a locking body that is detachably attached to the plurality of attachment parts, and lifting equipment that is locked to the locking body and lifts the jig body at a predetermined inclination angle, The mounting portion is selected so that the jig body can be lifted at a predetermined inclination angle with the heavy attachment fixed to the fixing member, a locking body is attached to the selected mounting portion, and the jig body is lifted using the attachment position of the locking body as a lifting fulcrum, so that the position of the fixing member is higher than the tip of the lifting equipment, and the heavy attachment can be mounted without the tip of the lifting equipment coming into contact with the limited height surface. A mounting device for a heavy object.

2. A weight is attached to the longitudinal base end side of the jig body.

2. The mounting device for a heavy object according to claim 1.

3. The mounting portion is a mounting hole, and the locking body is a hanging metal fitting fitted into the mounting hole.

2. The mounting device for a heavy object according to claim 1.

4. A method for attaching a heavy attachment to a position near a restricted height surface where the working height is restricted, A heavy attachment is fixed to the tip of a jig body in the form of a steel rod, and when the heavy attachment is fixed and lifted by lifting equipment, the jig body is lifted by setting a lifting fulcrum at a location in the longitudinal direction of the jig body so that the fixed heavy attachment is positioned above the tip of the lifting equipment, and the heavy attachment can be attached to a position near the limited working height. A method for mounting a heavy object.

5. A method for attaching a heavy attachment to a position near a restricted height surface where the working height is restricted, A heavy attachment is fixed to the tip of a jig body in the form of a steel rod, and when the jig body is lifted with lifting equipment while the heavy attachment is fixed, a first lifting fulcrum is set at a longitudinal location of the jig body so that the jig body is in an inclined state with the fixed heavy attachment positioned above the tip of the lifting equipment, and after the heavy attachment is attached to a position near the limited working height, a second lifting fulcrum is set on the jig body when the heavy attachment is detached from the jig body, and the jig body is lifted at the second lifting fulcrum in an inclined state with the lifting balance of the jig body without the heavy attachment. A method for mounting a heavy object.

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