JPH10273282A - Device for automatically hooking unhooking of suspension hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically hook/unhook a locked hoisting hook without needing any work by an operator by rotating an unhooking lever by elastic force of a spiral spring at the time of unloading a cargo so as to contact it with the end part of the cargo. SOLUTION: By lifting up a cargo 22, a hoisting crevice 4 is rotated counterclockwise by the self-weight of the cargo 22, and thus a spiral spring 15 fixed for its one end to the annular boss part 4a of the hoisting crevice 4 is wound up. Then, when the cargo 22 is transported and unloaded in a specified position, loosening occurs in the spiral spring 15 and, by the elastic force of this winding loosening, an annular gear 14 to which the outer end of the spiral spring 15 is attached is rotated in a direction indicated by an arrow, and a planetary gear 17 engaged with the annular gear 17 and the annular boss part 7a of an unhooking lever 7 engaged with the planetary gear 17 are rotated in an arrow direction. Thus, the unhooking lever 7 is rotated to abut to the cargo 22 and, by its reaction force, a hoisting hook 1 locking the load support 22 is retreated and separated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading and unloading operation in which a loading material such as a steel pipe is locked to a hanging hook attached to a wire rope from a crane or the like, and the lifting and lowering is performed. The present invention relates to a device for automatically removing a hanging hook for automatically removing a hanging hook locked at an end.

[0002]

2. Description of the Related Art A lifting hook attached to a wire rope from a crane or the like is engaged with an end portion of a loading material such as a steel pipe to lift and lower the loading material. Conventionally, the hanging hooks hooked to the ends have been manually removed by a plurality of workers.

[0003]

As described above, the work of hanging the hanging hook on a steel pipe or the like as a cargo material is
Conventionally, the work was manually performed by a plurality of workers, which took time and was dangerous, and the frequency of changing hooks was increased to handle a large number of steel pipes of various sizes. , The operating efficiency of the crane was reduced.

In order to solve the above problem, for example,
Japanese Patent Laying-Open No. 63-171791 proposes a device for automatically removing a hook from a hanging hook (hereinafter referred to as prior art). FIG. 12 is a schematic front view of the prior art, and as shown in the drawing, the hanging device of the prior art
0, a top beam 31 on which a 0 is vertically provided, a slide rail 32 provided on an upper surface of the top beam 31, a detachable stand 33, 33 opposed to the slide rail 32, a detachable stand 33,
A drive mechanism 34 for expanding the opening 33 and one of the detachable stands 3
3 and a detachable stand 33 on the other side.
And a guide plate 36 provided in a vertical portion of the detachable stands 33, 33. A hook is inserted between the guide plates 36 of the detachable stands 33, 33, and the hooks are inserted into each other. In this structure, the hook is rotated by moving the hook in a direction close to the hook, and the hook is locked by the detachable pin 35. Thus, the prior art is not a practical device having a complicated structure.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and in a cargo handling operation in which a cargo handling material such as a steel pipe is locked by a hanging hook attached to a wire rope from a crane or the like, and the material is lifted and lowered. At the time of lifting and unloading, the hanging hooks locked to the ends of the cargo handling material can be automatically hung and unwound without the need for workers, which can improve the efficiency of the crane and streamline the workforce. An object of the present invention is to provide a hanging device.

[0006]

According to a first aspect of the present invention, there is provided an apparatus for automatically hanging and removing a hanging hook, comprising: a hanging hook for locking an end of a cargo handling material; The hanging clevis attached, and a hook removal lever for hanging the hanging hook from the cargo handling material, which is rotatably mounted on the shaft attachment portion of the hanging clevis,
An annular boss portion having an internal gear is provided at a predetermined distance from the boss portion of the hanging clevis, and the boss portion of the hanging clevis and the annular portion of the hook releasing lever are provided on the shaft portion of the hook removing lever. A plurality of satellite gears meshing with the boss portion, an annular gear having a spiral spring mounted between the suspension clevis boss portion, and the inner gear of the annular gear and the hook release lever annular boss portion. Is provided between the hanging hook and the hook removing lever, a detachable stopper mechanism for fixing the hook removing lever to the hanging hook is attached, and when the cargo handling material is lowered, The rotation of the ring gear, the plurality of satellite gears and the inner gear of the ring boss portion of the hook release lever caused by the unraveling elastic force of the spiral spring causes By pivoting a hook release lever to abut against an end of the cargo handling material latched to the hanging hook, the hanging hook latched to the end of the cargo handling material is hooked off. It has.

According to a second aspect of the present invention, the stopper mechanism for fixing the hook releasing lever to the hanging hook is provided on a stopper provided on a shaft attachment portion of the hook removing lever and on a side surface of the hanging hook. And a link lever having a locking shaft locked by the stopper.

According to a third aspect of the present invention, an annular ratchet is provided on an outer peripheral surface of a shaft attachment portion of the hanging clevis, and a pawl mounted on a shaft of each of the plurality of satellite gears via a spring is engaged. The device according to claim 4, wherein the upper curved portion of the hanging hook is provided with a ratchet in which a pawl mounted on a hanging clevis is engaged. Is characterized by the fact that

[0009]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an embodiment of the apparatus of the present invention, and FIG. 2 is a side view as viewed from A in FIG. As shown in the drawings, the apparatus of the present invention comprises a hanging hook 1 for locking an end of a cargo handling material, and a lower end of a wire rope from a crane or the like rotatably mounted on the upper part of the hanging hook 1. A hanging clevis 4 to be attached and a hook release lever 7 pivotally mounted on both sides of the hanging hook 1 for hanging the hanging hook 1 from a cargo-handling material, the hanging hook 1 and the hanging clevis 4. And the hook release lever 7
It is mounted on one shaft.

A ratchet 2 is formed on the upper curved portion of the hanging hook 1, and the ratchet 2 engages with a ratchet claw 5 which is mounted on a hanging clevis 4. Reference numeral 6 denotes a leaf spring that presses the ratchet pawl 5 against the ratchet 2. By engaging a ratchet 2 formed on the hanging hook 1 with a ratchet pawl 5 attached to the hanging clevis 4, the hanging clevis 4 is locked to the hanging hook 1.

Link levers 9a, 9b, 9c are provided between the upper side surface of the hanging hook 1 and the side surface of the tip end of the loading material.
A link 9 composed of a link lever 9a is pivotally mounted on the upper side surface of the suspension hook 1 by a rotating shaft 10 incorporating a mainspring, and the lower end of the link lever 9c is rotated around the distal end side surface of the loading material locking portion of the suspension hook 1. It is attached by being mounted on a shaft 11.

A stopper 8 is formed on the outer periphery of the boss 7a formed on the shaft attachment portion of the hook release lever 7.
Locking shaft 12 to which link levers 9a and 9b are connected
Is hooked to the stopper 8 of the hanging hook 1, so that the hook removing lever 7 is locked to the hanging hook 1.

FIG. 3 is a sectional view taken along the line BB of FIG. 1, and FIG. 4 is a side view of FIG. 3 with the hook release lever removed.
As shown in FIG. 5 in an enlarged sectional view of the hook detaching lever shaft attaching portion in FIG. 3, the shaft attaching portion of the hook detaching lever 7 is separated from the annular boss portion 4a of the hanging clevis 4 by a predetermined distance.
An annular boss 7a having an inner gear 16 is provided. And between the annular boss 4a of the hanging clevis 4 and the annular boss 7a of the hook releasing lever 7, an annular gear 14 having a spiral spring 15 mounted between the hanging clevis 4a and the annular gear 14 And a plurality of satellite gears 17 meshing with the inner gear 16 of the hook release lever annular boss 7a.

As shown in the sectional view of FIG. 6, the satellite gear 17 has a claw 19 at one end of a center shaft 20 via a spring 21. On the other hand, as shown in the partial perspective view of FIG. 7, an annular ratchet 18 is provided on the outer peripheral surface of the hanging clevis 4 at the shaft attachment portion. The pawl 19 attached via a spring 21 is meshed.

Therefore, by rotating the suspension clevis 4, the center of the spiral spring 15 whose inner end is attached to the annular boss 4a of the suspension clevis 4 is wound. Also,
By rotating the hook releasing lever 7, a plurality of satellite gears 17 meshing with the inner gear 16 of the hook releasing lever annular boss 7a and an annular gear 14 meshing with the satellite gear 17 rotate, and the annular gear 14 is rotated. The outside of a spiral spring 15 having an outer end attached to the spiral is wound.

In this manner, elastic energy is applied to the spiral spring 15, and the applied elastic energy engages the ratchet 2 of the hanging hook 1 with the ratchet claw 5 of the hanging clevis 4, and the hook releasing lever 7 It is held by locking the locking shaft 12 of the link 9 attached to the suspension hook 1 to the stopper 8 provided on the annular boss 7a.

In the state where the cargo is lifted by the hanging hook 1, the stopper 8 of the hook release lever annular boss 7a is lifted.
, The lock of the lock shaft 12 of the link 9 attached to the hanging hook 1 is released. As a result, when the hanging hook 1 is unloaded, the spiral spring 15 is unraveled,
Due to the unwinding elasticity, the annular gear 14 to which the outer end of the spiral spring 15 is attached rotates, and the satellite gear 17 meshing with the annular gear 14 and the annular boss 7a of the hook release lever 7 meshing with the satellite gear 17 rotate. . Accordingly, the hook release lever 7 rotates and comes into contact with the cargo handling material, and the suspension hook 1 locked to the cargo handling material retreats and separates due to the reaction force.

Next, the operation of the apparatus according to the present invention will be described with reference to FIGS. First, as shown in FIG. 8 (a), the worker pivots the hook release lever 7 counterclockwise as shown by an arrow, and the hook release lever 7 is attached to the stopper 8 of the hook release lever 7 and attached to the hanging hook 1. The locking shaft 12 of the link 9 is locked so that the hook release lever 7 is locked. Then, the hanging clevis 4 is rotated clockwise from the X position to the Y position. When the hanging clevis 4 is rotated, the ratchet claw 5 attached to the hanging clevis 4 and meshing with the ratchet 2 of the hanging hook 1 is turned off.

By the rotation of the hook release lever 7, as shown in FIG. 8B, the hook release lever annular boss 7a rotates in the direction of the arrow, and the satellite gear 17 and As a result, the ring gears 14 meshing with the satellite gear 17 rotate in the directions of the arrows, so that the spiral spring 15 mounted on the ring gear 14 is wound. On the other hand, when the suspension clevis 4 rotates from the X position to the Y position, the annular boss portion 4a of the suspension clevis 4 rotates in the direction of the arrow, and the annular boss portion 4a is rotated.
The spiral spring 15 whose inner end is attached to a is loosened.

Next, as shown in FIG. 9, the locking shaft 12 of the link 9 of the hanging hook 1, which has been locked by the stopper 8 of the hook removing lever 7, is released, and the lock is released. The cargo material 22 is locked and lifted.

The lifting of the cargo handling material 22 causes the
As shown in (a), the hanging clevis 4 rotates counterclockwise from the Y position to the X position, and is located at that position by the weight of the cargo material 22. As a result, as shown in FIG. 10 (b), the annular boss 4a of the hanging clevis 4 rotates counterclockwise as indicated by the arrow, so that the spiral spring 15 having one end fixed to the annular boss 4a is wound. . At this time, since the pawl 19 attached to the shaft of the satellite gear 17 is engaged with the annular ratchet 18 of the suspension clevis 4, the satellite gear 1
7 does not rotate, and the ring gear 14 meshing therewith does not rotate. When the suspension clevis 4 rotates, the suspension clevis 4
And the ratchet pawl 5 meshing with the ratchet 2 of the hanging hook 1 moves freely in a direction following the inclined surfaces of the teeth of the ratchet 2, so that the counterclockwise rotation of the hanging clevis 4 is not hindered. Absent.

When the cargo material 22 is transported and suspended at a predetermined position in this manner, as shown in FIG. 11 (b), the spiral spring 15 is unraveled. Is rotated in the direction shown by the arrow, and the satellite gear 17 meshing with the ring gear 14 and the annular boss portion 7a of the hook release lever 7 meshing with the satellite gear 17 rotate in the direction shown by the arrow. . Therefore, as shown in FIG. 11 (a), the hook releasing lever 7 pivots and comes into contact with the cargo handling material 22, and the suspension hook 1 locked on the cargo handling material 22 retreats and separates by the reaction force.

[0023]

As described above, according to the present invention,
In the cargo handling work where the lifting material is locked by the lifting hook attached to the wire rope from the crane, etc., and the lifting work is performed, the lifting hook locked to the end of the lifting material is used to lift the worker. It is possible to automatically remove the crane without any need, and it is possible to improve the efficiency of the crane and rationalize the number of personnel, thereby providing an industrially useful effect.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention.

FIG. 2 is a side view as viewed from A in FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a view taken in the direction of arrow C in a state where a hook release lever of FIG. 3 is removed;

FIG. 5 is an enlarged cross-sectional view of a hook-releasing lever shaft attaching portion in FIG. 3;

FIG. 6 is a sectional view of a satellite gear.

FIG. 7 is a partial perspective view of an annular ratchet formed on the outer peripheral surface of the shaft attachment portion of the hanging clevis.

FIG. 8 is an explanatory view showing a state before the lifting of the cargo handling material, showing the operation of the apparatus of the present invention.

FIG. 9 is an explanatory view showing the operation of the apparatus of the present invention and showing a state at the time of loading material setting.

FIG. 10 is an explanatory view showing the state of lifting the cargo handling material, showing the operation of the apparatus of the present invention.

FIG. 11 is an explanatory view showing the state of the operation of the apparatus of the present invention when the cargo handling material is suspended.

FIG. 12 is a schematic front view of the prior art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hanging hook 2 hanging hook ratchet 3 hanging hook shaft 4 hanging clevis 4 a annular boss 5 ratchet pawl 6 leaf spring 7 hook release lever 7 a annular boss 8 stopper 9 link 10 rotating shaft 11 rotating shaft 12 locking shaft 13 connecting shaft 14 Annular gear 15 Spiral spring 16 Gear 17 Satellite gear 18 Annular ratchet 19 Claw 20 Center shaft 21 Spring 22 Handling material

Claims (4)

[Claims] 1. A hanging hook for locking an end of a cargo handling material,
A hanging clevis pivotally attached to an upper portion of the hanging hook, and a hook release lever for hanging the hanging hook from a cargo material, which is rotatably attached to an axis of the hanging clevis. An annular boss having an internal gear is provided at a predetermined interval from the boss of the suspension clevis, and the boss of the suspension clevis and the boss of the suspension clevis. Between the annular boss portion of the hook releasing lever, an annular gear having a spiral spring mounted between the hanging clevis boss portion and the inner gear of the annular gear and the hook releasing lever annular boss portion mesh with each other. A plurality of satellite gears are provided, and a detachable stopper mechanism for fixing the hook removal lever to the suspension hook is attached between the suspension hook and the hook removal lever. When the cargo handling material is lowered, the hook release lever is rotated by rotation of the ring gear, the plurality of satellite gears, and the hook release lever ring inner boss portion inner gear generated by the unraveling elasticity of the spiral spring. Rotate
The hanging hook automatically hooked / unfastened, wherein the hanging hook hooked to the end of the cargo handling material is hooked / unfastened by being brought into contact with the end of the cargo handling material locked to the hanging hook. apparatus. 2. The stopper mechanism for fixing the hook removal lever to the hanging hook includes a stopper provided on a shaft attachment portion of the hook removal lever and a stopper provided on a side surface of the hanging hook. The device according to claim 1, comprising a link lever having a locking shaft to be stopped. 3. An outer peripheral surface of a shaft attachment portion of the hanging clevis,
The device according to claim 1 or 2, wherein an annular ratchet is provided in which a pawl attached to a shaft of the plurality of satellite gears via a spring is engaged. 4. The apparatus according to claim 1, wherein the upper curved portion of the hanging hook is provided with a ratchet in which a claw pivotally attached to the hanging clevis is engaged.