JPWO2020065770A1 - Heavy object installation device - Google Patents

Abstract

The heavy object installation device has a detachable portion that can be attached to and detached from the machine base, a support provided on the detachable portion, and a hanging tool for suspending the heavy object. It is equipped with a hanging mechanism. Thereby, the heavy object installation device can be installed in the machine room without being arranged on the floor surface.

Description

The present invention relates to a heavy object installation device for suspending a heavy object.

Conventionally, there is known an elevator installation device in which a trolley type hanger is movably attached to a slide guide rail fixed to the ceiling surface of an elevator machine room, and a heavy object is hung by a chain block attached to the trolley type hanger. ing. The slide guide rail is pressed against the ceiling surface of the machine room by two pipe supports installed on the floor surface of the machine room (see, for example, Patent Document 1).

Jikken 4-42296 Gazette

In the conventional elevator installation device shown in Patent Document 1, a heavy load is supported by a pipe support arranged on the floor surface of the machine room. Therefore, it is necessary to secure a space for arranging the pipe support on the floor surface. Further, when the pipe support is arranged on the floor surface, the floor surface may be damaged by the pipe support.

The present invention has been made to solve the above-mentioned problems, and obtains a heavy object installation device that can be installed in a machine room without being placed on a floor surface.

The heavy object installation device according to the present invention has a detachable portion that can be attached to and detached from the machine base, a support provided on the detachable portion, and a hanging tool for suspending a heavy object, which is supported by the support and the hanging tool moves up and down. It is equipped with a hanging mechanism that can move in the direction.

According to the heavy object installation device of the present invention, it can be installed in the machine room without being arranged on the floor surface.

It is a perspective view of the heavy object installation device according to Embodiment 1 of this invention. It is a side view which shows the heavy object installation device of FIG. It is a top view which shows the heavy object installation device of FIG. It is a perspective view which shows the heavy object installation apparatus by Embodiment 2 of this invention. It is the schematic which looked at the rotation mechanism part of FIG. 4 from the direction of V. It is the schematic which looked at the rotation mechanism part of FIG. 4 from the direction of VI. It is a front view which shows the attachment / detachment part of the heavy object installation apparatus according to Embodiment 3 of this invention. It is a side view which shows the attachment / detachment part of the heavy weight installation apparatus according to Embodiment 3 of this invention. It is a front view which shows the attachment / detachment part of the heavy weight installation apparatus according to Embodiment 4 of this invention. It is a side view which shows the attachment / detachment part of the heavy object installation apparatus according to Embodiment 4 of this invention. It is a side view which shows the main part of the heavy object installation apparatus according to Embodiment 5 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

Embodiment 1.
FIG. 1 is a perspective view showing a heavy object installation device according to the first embodiment of the present invention. Further, FIG. 2 is a side view showing the heavy object installation device of FIG. Further, FIG. 3 is a top view showing the heavy object installation device of FIG. In the figure, two machine bases 100 are horizontally fixed to the floor of the machine room 200 provided above the hoistway of the elevator. When the elevator device 300, which is a heavy object, is installed in the machine room 200, the heavy object installation device for suspending the elevator device 300 is attached to the two machine bases 100. Examples of the elevator device 300 installed in the machine room 200 include a hoisting machine and a control panel.

Each machine base 100 has a lower plate portion arranged along the longitudinal direction of the machine base 100, an upper plate portion arranged in parallel with the lower plate portion, and a connecting portion connecting the lower plate portion and the upper plate portion. Have. The cross-sectional shape of the machine base 100 on a plane orthogonal to the longitudinal direction of the machine base 100 is I-shaped by the lower plate portion, the upper plate portion, and the connecting portion. Each machine base 100 is fixed to the machine room 200 with the position of the upper plate portion above the lower plate portion. As shown in FIG. 3, the two machine bases 100 are arranged parallel to each other.

The heavy object installation device has a detachable portion 30 that can be attached to and detached from each machine base 100, a support 20 provided on the detachable portion 30, and a suspension mechanism 1 supported by the support 20.

As shown in FIG. 3, the detachable portion 30 is attached to each machine base 100 across two machine bases 100. Further, the detachable portion 30 has a plate-shaped base 31, a plurality of holders 32 provided on the lower surface of the base 31, and a cylindrical tubular portion 33 fixed to the upper surface of the base 31. doing.

The base 31 is placed on the upper surface of each upper plate portion of each machine base 100 so as to straddle the two machine bases 100. The base 31 is detachably attached to the machine base 100 by each holder 32.

Each holder 32 has a rail clip and a bolt provided on the rail clip. Each holder 32 fastens the rail clip to the base 31 with bolts in a state where the upper plate portion of the machine base 100 is sandwiched between the lower surface of the base 31 and the rail clip. As a result, the attachment / detachment portion 30 is attached to the machine base 100. The attachment / detachment portion 30 can be removed from the machine base 100 by loosening the bolts. That is, the heavy object installation device is removable from each machine base 100.

The tubular portion 33 is arranged so that the axial direction of the tubular portion 33 coincides with the vertical direction. Further, the tubular portion 33 is arranged above one of the machine bases 100.

The support 20 is located above the tubular portion 33. Further, the support body 20 has a support column 21 rotatably attached to the tubular portion 33 and an attachment portion 22 provided on the support column 21.

The support column 21 is arranged coaxially with the tubular portion 33 above the tubular portion 33. The shape of the lower part of the support column 21 is a columnar shape. The shape of the upper part of the support column 21 is a plate shape along the vertical direction. The mounting portion 22 projects laterally from the lower part of the support column 21.

A rotation mechanism portion 13 is provided between the support column 21 and the tubular portion 33. The rotation mechanism unit 13 rotatably attaches the column 21 to the tubular portion 33 in a state where the axis of the column 21 is aligned with the axis of the tubular portion 33. Further, the rotation mechanism portion 13 has a columnar insertion portion provided at the lower end portion of the support column 21 and a cylindrical frame portion provided at the upper end portion of the tubular portion 33. The outer diameter of the insertion portion of the rotation mechanism portion 13 is smaller than the outer diameter of the support column 21. As a result, a step portion is formed at the boundary between the support column 21 and the insertion portion of the rotation mechanism portion 13. The insertion portion of the rotation mechanism portion 13 is rotatably inserted into the frame portion of the rotation mechanism portion 13. As a result, the support 20 can rotate with respect to the detachable portion 30 about the axis of the support column 21.

The suspension mechanism 1 is supported by the support 20. Further, the suspension mechanism 1 has a movable beam 10, a suspension tool 11, and a chain block 12.

A support shaft 14 is provided on the upper portion of the support column 21. An intermediate portion of the movable beam 10 is attached to the support shaft 14. The movable beam 10 is rotatable with respect to the support 20 about the support shaft 14. The movable beam 10 moves with respect to the support 20 by rotating around the support shaft 14. The support shaft 14 is arranged horizontally. As a result, the movable beam 10 rotates about the support shaft 14 in a plane along the vertical direction.

The hanger 11 is a member for hanging the heavy elevator device 300. The hanger 11 is provided at one end of the movable beam 10. As the hanger 11, a hook, an eyebolt, or the like is used. The hanger 11 can be moved in the vertical direction by the rotation of the movable beam 10 about the support shaft 14. The mounting portion 22 of the support 20 is located below the other end of the movable beam 10.

The chain block 12 is a moving mechanism portion that applies a force to the other end of the movable beam 10 in a direction that opposes the load of a heavy object applied to the hanger 11. The chain block 12 moves the hanger 11 upward by moving the movable beam 10 with respect to the support 20 against the load of a heavy object suspended from the hanger 11.

The chain block 12 has a main body 121, a chain 122 movably provided on the main body 121, and a connecting member 123 provided on the chain 122. The main body 121 is removably attached to the other end of the movable beam 10. The connecting member 123 is removably connected to the mounting portion 22. As a result, the chain block 12 is connected to the other end of the movable beam 10 and the mounting portion 22. In this example, the distance from the support shaft 14 to the hanger 11 is larger than the distance from the support shaft 14 to the main body 121 of the chain block 12.

The chain block 12 is stretched between the other end of the movable beam 10 and the mounting portion 22 to apply a force against the load of a heavy object to the other end of the movable beam 10. The length of the chain 122 between the connecting member 123 and the main body 121 changes as the chain 122 moves with respect to the main body 121. In the heavy object installation device, the chain 122 moves with respect to the main body 121 against the load of the heavy object in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 is shortened. 11 moves upward. Further, in the heavy object installation device, the chain 122 moves with respect to the main body 121 according to the load of the heavy object in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 becomes longer. 11 moves downward.

An example of a work procedure for installing the elevator device 300, which is a heavy object, on the floor of the machine room 200 by using the heavy object installation device configured as described above will be described with reference to FIGS. 1 to 3. Here, an example of the work procedure when the elevator device 300 is a hoisting machine will be described.

First, the base 31 of the heavy object installation device is attached to the two machine bases 100 provided parallel to the floor of the machine room 200 by the plurality of holders 32.
Next, the support column 21 of the support 20 is attached to the tubular portion 33 fixed to the base 31.
Next, the movable beam 10 is attached to the support shaft 14 provided on the upper portion of the support column 21.
Next, the chain block 12 is connected to the other end of the movable beam 10 and the mounting portion 22.
Next, the hanger 11 is attached to one end of the movable beam 10.
The movable beam 10, the support 20, and the attachment / detachment portion 30 may be integrally attached to the two machine bases 100. Moreover, the order of these operations can be changed as appropriate.

Next, the chain 122 of the chain block 12 is manually moved in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 becomes longer. As a result, as shown by the solid line in FIG. 2, one end of the movable beam 10 and the hanger 11 are lowered.
Next, the hanging tool 11 is hung on a hanging bolt provided in the elevator device 300.

Next, the chain of the chain block 12 is manually moved in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 is shortened against the load of the elevator device 300. As a result, as shown by the alternate long and short dash line in FIG. 2, one end of the movable beam 10 and the hanger 11 are raised. The elevator device 300 is lifted by raising the hanger 11.

Next, as shown by the arrow A in FIG. 3, the movable beam 10 is rotated clockwise around the axis of the support column 21 in the clockwise direction of FIG. Then, the elevator device 300 is moved to the installation position between the two machine bases 100.
Next, the chain 122 of the chain block 12 is manually moved in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 becomes longer, and one end of the movable beam 10 and the hanger 11 are lowered. Then, the elevator device 300 is lowered to the installation position, and the hanger 11 is removed from the elevator device 300.
As described above, the installation work of the elevator device 300 using the heavy object installation device is completed.

In such a heavy object installation device, a support 20 that supports the suspension mechanism 1 is provided on a detachable portion 30 that can be attached to and detached from the machine base 100. Therefore, the heavy object installation device can be attached to the machine base 100. As a result, the heavy object installation device can be installed in the machine room 200 without arranging the heavy object installation device on the floor surface of the machine room 200. Therefore, the space of the machine room 200 can be effectively utilized, and the space required for installing the heavy object installation device can be easily secured. Further, since the heavy object installation device is not arranged on the floor surface, it is possible to prevent the floor surface of the machine room 200 from being damaged.

Further, the hanger 11 is provided at one end of the movable beam 10, and the chain block 12 is provided at the other end of the movable beam 10. Therefore, it is possible to prevent heavy objects from being suspended below the chain block 12. As a result, the heavy object can be brought close to one end of the movable beam 10, and a large suspension allowance for the heavy object can be secured. Therefore, even in the machine room 200 having a low ceiling 201, a heavy object can be lifted.

Embodiment 2.
FIG. 4 is a perspective view showing a heavy object installation device according to the second embodiment of the present invention. Further, FIG. 5 is a schematic view of the rotation mechanism portion of FIG. 4 as viewed from the direction of V. Further, FIG. 6 is a schematic view of the rotation mechanism portion of FIG. 4 as viewed from the direction of VI.

The support 20 has a receiving member 23, a support column 21 fixed to the upper surface of the receiving member 23, and a mounting portion 22. The shape of the support column 21 is the same as that of the first embodiment. The mounting portion 22 is arranged next to the support column 21. Further, the mounting portion 22 is located below the other end of the movable beam 10. The chain 122 of the chain block 12 is connected to a main body portion 121 and a mounting portion 22 that are detachably attached to the other end of the movable beam 10.

The receiving member 23 is a member having a U-shaped cross section. The receiving member 23 is arranged with the U-shaped open portion facing upward. Further, the receiving member 23 is attached to the attachment / detachment portion 30 via the rotation mechanism portion 13. As a result, the receiving member 23 is rotatable with respect to the detachable portion 30 about the axis of the support column 21.

A stepped columnar convex portion 131 is provided on the lower surface of the receiving member 23. The base 31 of the attachment / detachment portion 30 is provided with a circular recess 132. The lower end of the convex portion 131 is rotatably inserted into the concave portion 132.

An annular groove is provided on the lower surface of the convex portion 131 so as to surround the lower end portion of the convex portion 131. Further, an annular groove surrounding the periphery of the recess 132 is provided on the upper surface of the base 31. A plurality of spheres 133 are arranged between the annular groove provided in the convex portion 131 and the annular groove provided in the base 31. The rotation mechanism portion 13 has a convex portion 131 and a plurality of spheres 133. As described above, the rotation mechanism portion 13 in the present embodiment has a structure similar to that of the ball bearing. Other configurations are the same as those in the first embodiment.

In such a heavy object installation device, the convex portion 131 provided on the support 20 is inserted into the concave portion 132 of the detachable portion 30, and a plurality of spheres 133 interposed between the detachable portion 30 and the support 20 are convex portions. It is arranged around 131. Therefore, when the support 20 rotates with respect to the attachment / detachment portion 30 about the axis of the support column 21, the plurality of spheres 133 can be made to roll. As a result, the support 20 can be smoothly rotated with respect to the attachment / detachment portion 30.

In addition, in FIGS. 4 to 6, a structure (not shown) is provided to prevent the support 20 from coming off the base 31 and falling over.

Embodiment 3.
In the first embodiment, the base 31 of the attachment / detachment portion 30 is attached across the two machine bases 100. However, the configuration of the attachment / detachment portion 30 is not limited to this. For example, if the strength of the machine base 100 is sufficient with respect to the moment acting on the support column 21, the base 31 may be attached to one machine base 100.

That is, FIG. 7 is a front view showing an attachment / detachment portion of the heavy object installation device according to the third embodiment of the present invention. Further, FIG. 8 is a side view showing an attachment / detachment portion of the heavy object installation device according to the third embodiment of the present invention. The attachment / detachment portion 30 includes a base 31 that overlaps the upper surface of the machine base 100, a fixing plate 34 that overlaps the lower surface of the machine base 100, and four fixing blocks 35 arranged between the base 31 and the fixing plate 34. Have.

Each fixed block 35 is provided with a stepped portion 35A. Each fixed block 35 is arranged so that each stepped portion 35A is abutted against the upper plate portion and the lower plate portion of the machine base 100. The upper plate portion of the machine base 100 is sandwiched between the base 31 and each fixing block 35. The lower plate portion of the machine base 100 is sandwiched between the fixing plate 34 and each fixing block 35. The base 31 and the fixing plate 34 face each other with the fixing blocks 35 interposed therebetween. Further, the base 31 and the fixing plate 34 are fixed to each fixing block 35 by a plurality of bolts 80. The attachment / detachment portion 30 is detachably attached to the machine base 100 by tightening the base 31 and the fixing plate 34 with bolts 80 across the machine base 100. Other configurations are the same as those in the first embodiment.

In such a heavy object installation device, the base 31 and the fixing plate 34 face each other with the machine base 100 interposed therebetween. Further, a fixing block 35 is arranged between the base 31 and the fixing plate 34. Further, the base 31 and the fixing plate 34 are fixed to the fixing block 35 by a plurality of bolts 80. Therefore, the detachable portion 30 can be stably attached to one machine base 100. As a result, it is not necessary to mount the attachment / detachment portion 30 across the two machine bases 100, and the installation area of the heavy object installation device can be reduced.

Embodiment 4.
In the first embodiment, the attachment / detachment portion 30 can be attached / detached to / from the machine base 100 by a holder 32 including a rail clip and a bolt. However, the method of attaching the attachment / detachment portion 30 to the machine base 100 is not limited to this.

That is, FIG. 9 is a front view showing an attachment / detachment portion of the heavy object installation device according to the fourth embodiment of the present invention. Further, FIG. 10 is a side view showing an attachment / detachment portion of the heavy object installation device according to the fourth embodiment of the present invention. In the present embodiment, the two fixing members 36 are attached to the lower surface of the base 31 by mounting bolts 38, respectively. The two C-shaped fixing members 36 are arranged so as to sandwich the upper plate portion of the machine base 100. A plurality of rollers 37 are arranged between the two fixing members 36 and the upper surface of the machine base 100. In this example, seven rollers 37 are arranged between the two fixing members 36 and the upper surface of the machine base 100. A shaft portion 37A projects outward from both ends of each roller 37 in the axial direction of the roller 37. A plurality of through holes 36A are provided on the side surface of each fixing member 36 along the longitudinal direction of the machine base 100. The shaft portion 37A of each roller 37 is inserted into each through hole 36A. In this way, each roller 37 is rotatably supported by each fixing member 36.

Two screw holes are provided in the lower portion of each fixing member 36. Jack bolts 39 are screwed into these screw holes. Each jack bolt 39 is attached to the lower surface of the upper plate portion of the machine base 100 during the installation work of a heavy object. The attachment / detachment portion 30 has a base 31, two fixing members 36, a plurality of rollers 37, mounting bolts 38, and jack bolts 39. As a result, the attachment / detachment portion 30 is attached to the machine base 100. Other configurations are the same as those in the first embodiment.

In such a heavy object installation device, the attachment / detachment portion 30 can be moved along the longitudinal direction of the machine base 100. As a result, the range in which heavy objects can be transported by the heavy object installation device can be expanded.

Embodiment 5.
FIG. 11 is a side view showing a main part of the heavy object installation device according to the fifth embodiment of the present invention. The heavy object installation device has a detachable portion 30 that can be attached to and detached from each machine base 100, a support 20A provided on the detachable portion 30, and a suspension mechanism 1 supported by the support 20A. The configuration of the detachable portion 30 is the same as that of the first embodiment.

The support body 20A has a support column 21, a mounting portion 22, a beam member 25, a suspension point pulley 26, a force point pulley 27, and a support pulley 28.

The support column 21 is provided on the tubular portion 33 of the attachment / detachment portion 30. The configuration of the support column 21 is the same as that of the first embodiment. Therefore, the support column 21 is rotatable with respect to the attachment / detachment portion 30 about the axis of the support column 21.

The mounting portion 22 projects laterally from the lower part of the support column 21. The configuration of the mounting portion 22 is the same as that of the first embodiment.

The beam member 25 is fixed to the upper part of the support column 21. Further, the beam member 25 is arranged horizontally. In this example, the distance from one end of the beam member 25 to the column 21 is larger than the distance from the other end of the beam member 25 to the column 21. The mounting portion 22 is located below the other end of the beam member 25.

The suspension point pulley 26 as the first turning portion is provided at one end of the beam member 25. The force point pulley 27 as the second turning portion is provided at the other end of the beam member 25. As a result, the force point pulley 27 is arranged at a position horizontally separated from the suspension point pulley 26. The support pulley 28 as the third turning portion is provided on the mounting portion 22. As a result, the support pulley 28 is arranged below the power point pulley 27.

The suspension mechanism 1 has a cord-like body 10A, a suspension tool 11, and a chain block 12.

The cord-like body 10A is wound around the suspension point pulley 26, the force point pulley 27, and the support pulley 28 in this order from one end of the cord-like body 10A. As the cord-like body 10A, a wire, a rope, or the like is used. The cord-like body 10A is movable with respect to the support 20A in a state of being wound around the suspension point pulley 26, the force point pulley 27, and the support pulley 28.

The hanger 11 is attached to one end of the cord-like body 10A lowered from the suspension point pulley 26. The hanger 11 moves in the vertical direction due to the movement of the cord-like body 10A with respect to the support 20A.

The chain block 12 as the moving mechanism portion is connected to the other end of the cord-like body 10A and the beam member 25 of the support 20A. The chain block 12 moves the hanger 11 upward by moving the cord-like body 10A with respect to the support 20A against the load of a heavy object suspended from the hanger 11. In this example, the main body 121 of the chain block 12 is attached to the other end of the beam member 25. Further, in this example, the connecting member 123 of the chain block 12 is connected to the other end of the cord-shaped body 10A. Other configurations are the same as those in the first embodiment.

In the heavy object installation device, the chain 122 moves with respect to the main body 121 against the load of the heavy object in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 is shortened. 11 moves upward. Further, in the heavy object installation device, the chain 122 moves with respect to the main body 121 according to the load of the heavy object in the direction in which the length of the chain 122 between the connecting member 123 and the main body 121 becomes longer. 11 moves downward.

In such a heavy object installation device, the beam member 25 is fixed to the support column 21. Therefore, it is not necessary to secure a suspension allowance between the beam member 25 and the ceiling 201 of the machine room 200.

Further, the hanger 11 is attached to one end of the cord-like body 10A lowered from the suspension point pulley 26. Further, the chain block 12 is provided at the other end of the cord-like body 10A. Therefore, it is possible to prevent heavy objects from being suspended below the chain block 12. As a result, the heavy object can be brought closer to the beam member 25, and a large suspension allowance for the heavy object can be secured. Therefore, even in the machine room 200 having a low ceiling 201, a heavy object can be lifted.

Further, the cord-like body 10A is wound around the suspension point pulley 26, the force point pulley 27, and the support pulley 28. Therefore, the arrangement of the cord-shaped body 10A can be freely set. Thereby, for example, the cord-shaped body 10A can be arranged at a position that does not interfere with the installation work of the elevator device 300.

In the above example, the support body 20A has three pulleys, a suspension point pulley 26, a force point pulley 27, and a support pulley 28. However, the structure of the pulley is not limited to this. For example, the pulley around which the cord-shaped body 10A is wound may be only the suspension point pulley 26. Further, the pulley around which the cord-shaped body 10A is wound may be limited to the suspension point pulley 26 and the force point pulley 27. Further, the pulley around which the cord-shaped body 10A is wound may be only the suspension point pulley 26 and the support pulley 28. In these cases, the arrangement and posture of the chain block 12 are appropriately changed. Therefore, when the pulley around which the cord-shaped body 10A is wound is only the suspension point pulley 26 and the force point pulley 27, the chain block 12 is connected to the other end of the cord-shaped body 10A and the mounting portion 22.

Further, in the fifth embodiment, the configuration of the detachable portion 30 is the same as that of the first embodiment, but the configuration of the detachable portion 30 is the same as that of the detachable portion 30 of the third embodiment or the fourth embodiment. May be good. Further, the rotation mechanism unit 13 may have the same configuration as the rotation mechanism unit 13 of the second embodiment.

1 Suspension mechanism, 10 Movable beam, 10A Pulley, 11 Suspension, 12 Chain block (movement mechanism), 13 Rotation mechanism, 14 Support shaft, 20, 20A support, 21 Strut, 22 Mounting part, 23 Receiver Members, 25 beam members, 26 suspension point pulleys (1st turning part), 27 power point pulleys (2nd turning part), 28 support pulleys (3rd turning part), 30 attachment / detachment parts, 31 bases, 32 holders, 33 Cylindrical part, 34 fixing plate, 35 fixing block, 35A stepped part, 36 fixing member, 36A through hole, 37 roller, 37A shaft part, 39 jack bolt, 100 machine base, 131 convex part, 132 concave part, 133 sphere, 200 machine room, 201 ceiling, 300 elevator equipment.

Claims (8)

Detachable part that can be attached to and detached from the machine base,
A support provided on the detachable portion and
A suspension mechanism that has a suspender for suspending a heavy object, is supported by the support, and the suspender can move in the vertical direction.
A heavy load installation device equipped with. The support has a support provided in the attachment / detachment portion, and has a support.
The suspension mechanism has a movable beam and a moving mechanism portion.
The movable beam can rotate around a support shaft provided on the support column.
The hanging tool is provided at one end of the movable beam, and is provided.
The heavy object installation device according to claim 1, wherein the moving mechanism unit applies a force to the other end of the movable beam in a direction against the load of the heavy object applied to the hanger. The support has a mounting portion located below the other end of the movable beam.
The heavy object installation device according to claim 2, wherein the moving mechanism portion is connected to the other end portion of the movable beam and the mounting portion. The support has a support column provided on the detachable portion, a beam member fixed to the support column, and a first turning portion provided on the beam member.
The suspension mechanism has a cord-like body and a moving mechanism portion.
The cord-like body is movable with respect to the support while being hung on the first turning portion.
The hanging tool is attached to one end of the cord-like body lowered from the first turning portion.
The heavy object installation device according to claim 1, wherein the moving mechanism unit applies a force to the other end of the cord-like body in a direction against the load of the heavy object applied to the hanger. The support has a second turning portion provided on the beam member at a position horizontally separated from the first turning portion, and a third turning portion located below the second turning portion.
The cord-like body is hung from one end of the cord-like body in the order of the first conversion portion, the second conversion portion, and the third conversion portion.
The heavy object installation device according to claim 4, wherein the moving mechanism portion is connected to the other end of the cord-like body and the beam member. The heavy object installation device according to any one of claims 2 to 5, wherein the support is rotatable with respect to the attachment / detachment portion about the axis of the support column. The heavy object installation device according to any one of claims 2 to 6, wherein the moving mechanism unit is a chain block. The heavy object installation device according to any one of claims 1 to 7, wherein the attachment / detachment portion is movable with respect to the machine base along the longitudinal direction of the machine base.

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