JPH1160145A - Hanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanger which can be automatically attached to and detached from a cargo to be lifted. SOLUTION: A cylinder 2 of which axial line is arranged in the vertical direction when it is used and in which a plurality of openings 24 are provided at a peripheral fringe in a lower end part thereof is provided. A central shaft 3 passes through and is supported in such a manner that it can rotate in the peripheral direction of the cylinder and slide in the axial line direction. In the cylinder, a first turning body 4 which turns centered on the central shaft in the interlocking relationship with the vertical slide in the axial direction of the central shaft, a second turning body 5 which is provided with a cam 52 and constituted in such a way that it is turned and driven due to the turn of the first turning body 4, and an oscillation hook 28 which protrudes and pulls in for the plurality of openings due to the turn of the cam 52 in accordance with the turn of the second turning body 5 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device, and more particularly to a lifting device for lifting a luggage by a crane or the like and transporting the luggage up and down, back and forth, and left and right so that the luggage can be detachably attached.

[0002]

2. Description of the Related Art Conventionally, a crane has been used as a construction machine for lifting a suspended load and transporting it vertically, vertically and horizontally. For example, in order to mold a concrete structure, a required amount of template is lifted to a molding site or a high place, assembled into a mold having a predetermined shape, and then subjected to a molding step of pouring concrete. However, on-site construction at a high place or the like is inconvenient and dangerous, so recently, as shown in FIG. 10, the formwork 11 is previously assembled from a predetermined number of steel mold plates in a safe and wide place such as the ground, A system in which the assembled form 11 is lifted by a crane, transported to a molding site, placed at a predetermined position, and then driven into place has been popular. However, as shown in FIG. 10, in order to lift and move the assembled form 11 by a crane, first, the chains 13 and the like must be firmly engaged with the suspension rings 12 attached to the form 11, respectively. . In addition, the chain 13 must be removed from the suspension ring 12 after being transported and arranged at the molding site.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a method for lifting a formwork or the like by means of a crane in order to facilitate the attachment or detachment of the formwork or the like to or from a suspended load when the crane or the like lifts or carries the work. After being moved upward, it can be automatically engaged with the suspended load by lowering and contacting the suspended load, and the suspended load is lifted by a crane, transported to the site, and placed at a predetermined position. It is an object of the present invention to provide a suspender that can be automatically separated from the suspended load after being placed in the suspended load.

[0004]

According to the present invention, there is provided a suspender according to the present invention, wherein when used, the axis of the cylinder is vertically arranged, and the axis of the cylinder is provided with a plurality of openings on the periphery of the lower end. The center shaft is supported so as to be rotatable in the circumferential direction in the direction and slidable in the axial direction.
A first rotating body that rotates about the central axis in conjunction with vertical sliding of the central axis in the axial direction, a cam is provided, and the cam is driven to rotate by the rotation of the first rotating body; And a swing hook that projects and retracts from the plurality of openings by rotation of a cam accompanying rotation of the second rotation body. And

[0005] More specifically, the hanging hand of the present invention is a hollow body, its axis is usually in the vertical direction, and a plurality of openings are opened at equal angular intervals on the periphery near the lower end. A cylinder having a plurality of swinging hooks swingably mounted such that hook portions formed at the distal ends respectively face the plurality of openings; and a cylinder rotatable and slidable so as to pass through the axis of the cylinder. Is pierced by
A drive shaft is provided on the upper end side located in the cylinder, and a center axis provided with a guide plate having an oblique guide slot formed on a surface so as to protrude downward from the drive seat in the axial direction; An arm rotatably mounted at a predetermined position of the shaft such that the center axis becomes a rotation axis, and an arm protruding into the guide slot on a peripheral edge thereof and guided by movement of the guide slot due to vertical movement of the guide plate; And a first rotating body to which a biased ratchet pawl is attached, and a slidably attached part around the first rotating body other than the arm, and the slidable part around the first rotating body. A ratchet, which is driven in combination with a ratchet pawl, is attached, and a second rotating body provided with a cam for projecting and retracting a hook portion of the swing hook is provided.

More specifically, a stop plate is provided near the lower end of the outer peripheral edge of the cylinder for sliding the center shaft up and down in the axial direction in contact with the object to be lifted and transported.

In the hanging hand of the present invention having the above-described structure,
When the center axis is moved up and down, the guide plate moves up and down in conjunction with it, and the first rotating body is guided by the guide plate to rotate.
Then, by the rotation of the first rotating body, the second rotating body is rotated via the ratchet mechanism, and the swing hook is swung by the action of the cam, and is projected or pulled out of the opening.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described specifically, but the present invention is not limited to these embodiments. First,
Referring to FIG. 1, the lifting hand of the present invention includes a cylinder 2, a center shaft 3, a first rotating body 4, a second rotating body 5, and the like.
The cylinder 2 is a hollow body, and in a use state in which the axis thereof is set upright, an annular stopper 21 used at the time of performing a conventional lifting operation is provided at a lower end. Cylinder 2
Has an upper end opening 2a, which is closed off by an upper end plate 23 having a central shaft hole 22 formed therein. A plurality (four in the present embodiment) of openings 24 are formed at equal angular intervals (90 ° intervals in the present embodiment) in the peripheral portion near the lower end of the cylinder 2. Cylinder 2
, An upper stopper 25 and a lower stopper 26 are provided.

The upper stopper 25 has a disk shape and is provided with a central shaft hole 251. An elastic means 252 constituted by a plurality of springs is provided on the periphery of the central shaft hole 251.
Is provided. 2, fan-shaped openings 253 are formed on both sides of the upper stopper 25, respectively.

The lower stopper 26 is, as shown in FIG.
A plurality (four in the present embodiment) of wing plates 262 are protruded at equal angular intervals (90 ° intervals in the present embodiment) from the center panel body 260 having the shaft hole 261 formed therein. An opening 2 is provided between the wing plates 262 of these lower stoppers 26.
63 are formed.

The upper stopper 2 at the periphery of the cylinder 2
Four fixed seats 281 are provided at equal angular intervals in a portion between 5 and the lower stopper 26. The upper ends of the swing hooks 28 each having a hook 282 formed at the lower end thereof are attached to these fixed seats 281.
The lower end of the swing hook 28 projects below the lower stopper 26 of the cylinder 2 via the opening 263, and the hook 282 faces the opening 24. In addition, as shown in FIG.
The hook 282 is normally urged by the spring 283 in a direction in which the hook 282 is pulled into the cylinder 2 from the opening 24.

A fixed seat 281 provided at a portion between the upper stopper 25 and the lower stopper 26 on the periphery of the cylinder 2
A ratchet seat 29 is provided above. FIG.
As shown in the figure, a ratchet pawl 292 urged by a spring 291 is attached to the ratchet seat 29. A stop plate 264 is formed on the outer peripheral edge near the lower end of the cylinder 2 so as to project therefrom.

A rotating device 31 is provided on the upper end side of the center shaft 3 located outside the cylinder 2. The cylinder 2 is rotatably and slidably supported along the axis thereof through the central shaft hole 22 of the end plate 23, the central shaft hole 251 of the upper stopper 25, and the shaft hole 261 of the lower stopper 26. I have. A drive seat 32 is fixed to a portion of the center shaft 3 located in the cylinder 2 near the upper end plate 23. As shown in FIG. 6, the fixing seat 32 has a substantially sector shape that protrudes from the central axis 3 in the radial direction. Further, a guide plate 33 that extends downward along the axial direction of the central shaft 3 is provided at the arcuate end of the fixed seat 32. The guide plate 33 has an arc shape and protrudes through the fan-shaped opening 253 of the upper stopper 25 to a portion below the upper stopper 25 of the cylinder 2. Also,
As shown in FIG. 7, an oblique guide slot 331 that extends from left to right is opened in the plate surface of the guide plate 33.

The frame 311 of the rotating device 31 includes:
A motor 312 using a generator 316 as a power source is provided so as to protrude horizontally. The output shaft 313 of the motor 312 is provided with a bevel gear 314. Also,
This bevel gear 314 is meshed with another bevel gear 315 attached to the center shaft 3.

The first rotating body 4 has a sleeve shape, is rotatably fitted to a portion of the center shaft 3 between the upper stopper 25 and the lower stopper 26, and has a center shaft hole of the upper stopper 25. Elastic means 252 attached to the periphery of 251
Are positioned by the urging force of As shown in FIG. 8, a roller 41 attached to an end of an arm 42 radially protruding from a peripheral edge of the first rotating body 4 rotates to a guide slot 331 in an oblique direction of the guide plate 33. It is movably and slidably engaged. Further, as shown in FIG. 8, on the opposite side of the arm 42 of the first rotating body 4, the first rotary body 4 is biased in the direction of the central axis 3 by a spring 45 implanted in a fixed sheet 44. A ratchet pawl 43 is attached to the lower side of the fixed sheet 44.

The arm 42 and the ratchet pawl 43
In the other parts, the sleeve-shaped second rotating body 5 is slidably mounted around the first rotating body 4. As shown in FIG. 5, a ratchet 5 combined with the first ratchet claw 43 is provided on an upper end portion of the second rotating body 5.
1 is provided. The present embodiment is configured such that when the first rotating body 4 rotates, the second rotating body 5 rotates 45 ° via the ratchet structure. A cam 52 is provided at the lower end of the second rotating body 5.
Projections 521 are formed on the periphery of the cam 52 at intervals of 90 °. The inside of the main body of the swing hook 28 provided at intervals of 90 ° along the inner circumference of the cylinder 2 is in contact with the peripheral edge of the cam 52, and the swing hook 2
8 is configured to be pressed by the protruding portion 521 of the cam 52 that rotates in conjunction with the rotation of the second rotating body 5.

As shown in FIG. 5, a ratchet pawl 292 provided on the inner periphery of the cylinder 2 is urged by a spring 291 to stop the clockwise rotation of the ratchet 51 of the second rotating body 5. It has become. In addition, the first
The combination of the ratchet claw 43 of the rotating body 4 and the ratchet 51 is configured to drive the ratchet 51 only in the counterclockwise direction.

The operation of the present embodiment will be described. As shown in FIG. 9, a suspension plate 72 protrudes inward at the upper end of the form 6 to be lifted, A lifting seat 7 that can hold a concrete injection hole 71 as it is is attached in advance.

In order to lift and transport the formwork 6, the upper end of the center shaft 3 of the lifting hand of the present embodiment is first hooked and lifted by the lifting tool 8 of the crane. When the lifted hand is in the upright position, the drive seat 32 fixed to the central shaft 3 in the cylinder 2 locks the upper end plate 23 of the cylinder 2. Without sliding along its own weight.
It is lifted with the central shaft 3. The lifting hand is carried above the formwork 6, and the lifting means is lowered in the vertical direction so that the stopper 21 at the lower end coincides with the center of the driving hole 71 of the formwork 6. A stop plate 26 is provided on the outer peripheral edge near the lower end of the cylinder 2.
When the stopper plate 264 abuts on the suspension plate 72 of the formwork 6 because the protrusion 4 is formed, the lowering of the cylinder 2 itself is stopped, but the center shaft 3 continues to lower by its own weight,
It slides with respect to the cylinder 2. At this time, since the driving seat 32 descends together with the center shaft 2, the guide plate 33 formed so as to protrude downward from the tip of the driving seat 32 naturally descends. An arm 42 radially protruding from a peripheral edge of a first rotating body 4 rotatably attached to a predetermined position of the center shaft 3
The roller 41 attached to the end of the roller 41 is rotatably and slidably engaged with the guide slot 331 of the guide plate 33 in the oblique direction. And the first through the arm 42
Of the rotating body 4 rotates counterclockwise. A first ratchet claw 43 urged in the direction of the center axis 3 by a spring 45 on the opposite side of the arm 42 of the first rotating body 4.
Is attached, and the second rotating body 5 is provided at a portion other than the arm 42 and the first ratchet claw 43.
Are slidably mounted around the first rotating body 4. Since the ratchet 51 combined with the first ratchet claw 43 is provided at the upper end of the second rotating body 5, when the first rotating body 4 rotates as described above,
The second rotating body 5 also rotates via the ratchet structure. In this embodiment, the rotation angle of the second rotating body 5 is 4
5 °. A cam 5 is provided at the lower end of the second rotating body.
2 are provided, and projecting portions 521 are formed on the periphery of the cam 52 at 90 ° intervals. Also, cylinder 2
The inside of the swing hook 28 main body provided at 90 ° intervals along the inner circumference of the cam 52 is in contact with the peripheral edge of the cam 52,
The swing hook 28 is pressed by a protruding portion 521 of the cam 52 which is rotated together with the rotation of the second rotary body 5. Therefore, when the second rotating body 5 rotates,
The hook portion 282 at the lower end of the sleeve 2 automatically opens
Plate 7 protruding from the lower end of the lifting seat 7
2 can be hooked.

Next, the center shaft 3 is gradually lifted up again by the operation of the crane via the hanging member 8. The ratchet pawl 292 provided on the inner periphery of the cylinder 2 stops the clockwise rotation of the ratchet 51 of the second rotating body 5,
Further, the ratchet claw 43 of the first rotating body and the ratchet 5
1 is configured to drive the ratchet 51 only in the counterclockwise direction, so that the first rotating body 4 rotates clockwise due to the rise of the guide plate 33 with the rise of the central shaft 3. Accordingly, the second rotating body 5 is not driven to rotate.
That is, the cam 52 provided on the second rotating body 5 does not rotate, and the swinging hook 28 is attached to the suspension plate 7 of the lifting seat 7 of the form 6.
2 does not rotate while maintaining the hooked position. Accordingly, after the center shaft 3 is gradually lifted to bring the drive seat 32 into contact with the upper end plate 23 of the cylinder 2, the cylinder 2 is lifted, and at the same time, between the swing hook 28 and the hanging plate 72 of the lifting seat 7. The form 6 can be lifted by the engagement.

When it is necessary to adjust the direction of the lifted formwork 6 when it is carried down to a predetermined position and lowered, the rotating device 31 may be operated and controlled. Motor 31
2 is transmitted to the central shaft 3 via bevel gears 314 and 315, and by rotating the cylinder 2 together with the central shaft 3, the direction of the mold 6 hooked on the swing hook 28 is adjusted. be able to.

After accurately adjusting the direction of the mold 6, the mold 6 is gradually lowered. When the lower end side of the formwork 6 comes into contact with a predetermined position, the cylinder 2 cannot be further lowered. However, when the lifting tool 8 of the crane is further lowered from this state, the center axis 3 of the lifting hand is lowered by its own weight. The driving seat 32 descends with it, drives the first rotating body 4 counterclockwise through the guide slot 331 of the guide plate 33 and the roller 41, and rotates the second rotating body 4 through the ratchet pawl 43 and the ratchet 51. Is further rotated counterclockwise by 45 °. When the second rotating body 5 rotates 45 ° in the counterclockwise direction, the protrusion 521 of the cam 52 separates from the swing hook 28, and the swing hook 28 returns to the original position by the urging force of the spring 283. . As a result, the hook portion 282 is pulled back from the advanced position protruding from the opening 24 to the retracted position in the cylinder 2, and the hook between the hook portion 282 and the suspension plate 72 of the form 6 is automatically released. Next, the center shaft 3 is gradually lifted again by the operation of the crane via the lifting tool 8. A ratchet pawl 292 provided on the inner periphery of the cylinder 2 locks the clockwise rotation of the ratchet 51 of the second rotating body 5 and the ratchet pawl 43 of the first rotating body 4 and the ratchet pawl 43. 5
Since the combination with 1 drives the ratchet 51 only in the counterclockwise direction, the clockwise rotation of the first rotating body 4 due to the rise of the guide plate 33 accompanying the rise of the center shaft 3 is the second rotation. Since the rotating body 5 cannot be driven, the cam 52 does not rotate while maintaining the position where the swing hook 28 is not hooked on the suspension plate 72 of the lifting seat 7 of the formwork 6. Therefore, the center shaft 3 is gradually lifted, the drive seat 32 is brought into contact with the upper end plate 23 of the cylinder 2, and the entire lifting hand together with the cylinder 2 can be detached from the mold frame 6 and lifted.

[0023]

As is apparent from the above description, the lifting hand of the present invention is automatically moved to the hanging load by moving it to a hanging load such as a formwork by a crane or the like and appropriately abutting it. Can be engaged. After that, the suspended load can be lifted by a crane, transported to the site, and arranged in a predetermined position and orientation, and then automatically removed from the suspended load.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a hanging hand according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 1;

FIG. 6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a side view of the guide plate.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a cross-sectional view for explaining a lifting operation using the lifting hand according to the embodiment.

FIG. 10 is a perspective view for explaining a conventional method of lifting a formwork.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Form frame 12 Hanging ring 13 Chain 2 Cylinder 21 Stopper 22 Center shaft hole 23 Upper end plate 24 Opening 25 Upper stopper 251 Center shaft hole 252 Elastic means 253 Fan-shaped opening 26 Lower stopper 261 Shaft hole 262 Blade plate 263 Opening 264 Stop Plate 28 Swing hook 281 Fixed seat 282 Hook 283 Spring 29 Ratchet seat 291 Spring 292 Ratchet pawl 3 Center shaft 31 Rotating device 311 Frame 312 Motor 313 Output shaft 314 Bevel gear 315 Bevel gear 316 Generator 32 Drive seat 331 Guide plate 331 Guide slot 4 First rotating body 41 Roller 42 Arm 43 Ratchet claw 44 Fixed sheet 45 Spring 5 Second rotating body 51 Ratchet 52 Cam 521 Projecting part 6 Formwork 7 Lifting seat 71 Write port 72 hanging plate 8 hanger

Claims (3)

[Claims] 1. A center shaft which is rotatable in the axial direction and axially slidable in the axial direction of a cylinder having a plurality of openings provided in a peripheral edge of a lower end portion thereof when used in an up-down direction. A first rotating body that rotates about the central axis in conjunction with vertical sliding of the central axis in the axial direction, and a cam provided in the cylinder; A second rotating body configured to be rotated by the rotation of the moving body, and a projecting and retracting operation with respect to the plurality of openings by the rotation of the cam accompanying the rotating of the second rotating body. A swinging hook for performing the swinging operation. 2. A hollow body, usually having an axis extending in the vertical direction, a plurality of openings being formed at equal angular intervals on a peripheral edge near a lower end, and a hook portion formed at a tip thereof inside the hollow body. A cylinder in which a plurality of swing hooks are swingably mounted so as to face the plurality of openings, respectively; a cylinder is rotatably and slidably penetrated through the cylinder so as to pass through an axis of the cylinder, and is located in the cylinder. A drive shaft is provided on the upper end side, and a central axis provided with a guide plate having an obliquely oriented guide slot formed on the surface so as to protrude downward from the drive seat in the axial direction; The arm is rotatably mounted so that the center axis becomes a rotation axis, and an arm is provided on a peripheral edge thereof, the arm protruding into the guide slot, and guided by the movement of the guide slot due to the vertical movement of the guide plate, And, A first rotating body to which a biased ratchet claw is attached; and a slidably attached around a portion other than the arm of the first rotating body, which is driven in combination therewith with the ratchet claw. A second rotating body having a ratchet attached thereto and a cam for projecting and retracting a hook portion of the swing hook with respect to the opening. 3. A stopper plate is provided near a lower end of an outer peripheral edge of the cylinder to slide the center shaft up and down in an axial direction in contact with an object to be lifted and transported. The hanging hand according to claim 1 or 2.