JP2806247B2 - Hanging jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspending jig provided with a mechanism for automatically gripping and unhanging a suspended load and for locking in both states.

[0002]

2. Description of the Related Art When large building materials that can be disassembled into a uniform shape such as a box shape need to be stocked in a stock yard, but the site area is relatively small,
The disassembled material must be stocked in a stacked state. As one of the stacking means in this case, the lower part of the portal crane is used as a stock yard,
The materials are piled up at the stacking position while being hung by the crane.

[0003]

However, since the whole height is increased in the stacked state, the worker must carry out the loading and unloading work at the uppermost position of the stacking height before hanging the crane hook. It was dangerous because of working at height.

Accordingly, the present invention provides a hanging jig which can automatically perform a grasping and hanging operation of a suspended load by remote control, and can lock in a state after the grasping and hanging operation is performed. The purpose is to do.

It is another object of the present invention to accurately position the hanging jig at a target position when the lifting jig is lowered from a state where the hanging jig is roughly positioned above the load.

[0006]

In order to achieve the above object, the present invention provides a guide post suspended from a lower part of a beam, a frame inserted through the guide post and guided up and down, and a right and left side of the frame. A pair of article support arms which are pivotally supported at a pivotal position and have a chuck portion integrally protruded at the distal end thereof, one end of which is pivotally supported by an upper pivot end of each of the support arms, and the other end of which is on both sides of the beam. A link lever pivotally supported by each other to swing the support arms in the expanding and contracting directions each time the frame is moved up and down to separate the chuck portions toward and away from the holding position of the suspended load; A lock pin is provided at the center, which is disposed in a lock hole opened in the guide post so as to be able to protrude and retract, and a drive mechanism for operating the lock pin by a remote operation.

In the present invention, the frames are arranged at both lower ends of the beam, and a vertical guide plate which is in sliding contact with a longitudinal end surface of the suspended load is fixed to a lower portion of an outer end surface of each frame. A structure in which lateral guide plates slidingly contacting both sides in the width direction of the suspended load are fixed to the left and right lower portions may be employed.

[0008]

According to the above construction, the two article support arms swing in the direction of expanding the chuck portions thereof via the link mechanism with the lowering operation of the frame with respect to the beam. Conversely, as the frame is raised, both chuck portions are reduced. The suspended load is gripped or removed by the suspending jig according to the expanding and contracting operation of the chuck portion.

After grasping or removing, the frame is locked in the raised position by operating the drive mechanism by remote control to protrude the lock pin, and the suspended load is held in the state of being grasped by the frame or being detached. Dripping.

[0010] In the case of the structure of the second aspect, when the hanging jig is roughly positioned on the upper part of the suspended load and lowered, the guide plates are provided on both sides in the length direction and both sides in the width direction of the suspended load. Slides on each other, and guides both frames while self-correcting them to the gripping position of the suspended load.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 schematically shows a portal crane including a hanging jig according to the present invention. In the figure, a suspended load is a post member 1 for a tower crane having a rectangular parallelepiped skeleton having a cross section of 1.9 m square and a length of 6 m, which is carried in / out from a carry-in / out position [A], and a lower side of a crane guide rail 2. Are stocked in multiple stages at a stock position [b] where the guide pillars 3 erected at a position are used as positioning jigs.

A trolley 5 having a crane hook 4 vertically suspended runs on the guide rail 2. A hanging jig 7 according to the present invention is hung below the hook 4, and the post member 1 is gripped and loaded and unloaded below the hanging jig 7.

As shown in FIGS. 2 to 4, the suspending jig 7 is vertically moved by inserting a beam 10, a guide post 12 which is integrally provided at the lower part of both ends in the longitudinal direction of the beam 10, and a center inserted through the guide post 12. Guided frame 14 and frame 1
4 is pivotally supported on the left and right sides via a pivot pin 16,
A pair of substantially L-shaped support arms 18 integrally provided with a chuck portion 18a on the outer side of a lower portion thereof;
And a pair of link levers 26 connected to the brackets 22 welded on both sides of the beam 10 via connection pins 24 at the upper ends.

The beam 10 is formed by connecting two U-shaped steel members in parallel. A pair of brackets 28 are welded to the upper center of the beam 10 as shown in FIG. A pin 30 to be locked to the bearing is carried.

Each of the frames 14 is formed by connecting a U-shaped steel material having a hanger shape to the front and back, and is arranged at positions corresponding to both longitudinal sides of the post member 1. When the frame 14 is located at the lower position of the beam 10 by its own weight, the chuck portions 18a of the support arms 18 connected to the link lever 26 are expanded to both sides as shown in FIG. Protrude and chuck.

Further, when the beam 10 is further lowered with the frame 14 touching down, the frame 14 relatively rises, and the supporting arm 18 swings to reduce the chuck portion 18a with this raising operation. Result chuck part 18
a is hung from the post member 1.

Each frame 1 for the beam 10
3, the guide post 12 is provided with a lock hole 12a corresponding to the lock hole 14a opened in the center of the frame 14, as shown in FIG.

On the other hand, a base 32 is integrated with the center rear surface of the frame 14, and the lock hole 1 is provided on the base 32.
An electromagnetic cylinder 36 is provided for driving the lock pin 34 which can be moved up and down with respect to 4a. The lock pin 34 is urged in a protruding direction by a spring (not shown) built in the electromagnetic cylinder 36.

Further, the lock pin 34 has a frame 1
A guide pulley 3 having one end connected to a bell crank 37 slidably held on the beam 4 and the other end provided in the beam 10.
8 is connected to an emergency unlocking cord member 40 which is pulled out to the outside. The power supply of the electromagnetic cylinder 36 is connected to a battery (not shown) mounted on one side of the beam 10 and to a control device 44 (see FIG. 2) for radio control mounted on the other side. It is connected and turned on and off by a push button operation of a remote control radio (not shown).

Therefore, if the electromagnetic cylinder 36 is turned off with the frame 14 lowered, as shown in FIG.
a, and comes into contact with the surface of the guide post 12, holds the frame 14 at the lowered position, and locks the chuck portion 18a in a gripping state.

When the electromagnetic cylinder 36 is turned on from the locked state, the lock pin 34 is pulled in against the urging force of the spring, and the frame 14 is unlocked.

Conversely, if the electromagnetic cylinder 36 is turned off in a state where the frame 14 is raised and the lock hole 14a is aligned with the lock hole 12a, the lock pin 34 is moved into the lock holes 12a, 14a by the urging force of the spring. The frame 14 is held at the raised position, and the chuck portion 18a is hung and locked. When the electromagnetic cylinder 36 is turned on from this locked state, the frame 14 is unlocked.

Further, a vertical guide plate 46 which is inclined outwardly is fixed to the lower portion of the outer end face of each frame 14, and a pair of horizontal guide plates 48 are fixed to the left and right lower portions of the back surface. .

The vertical guide plate 46 is a post member 1
The horizontal guide plate 48 slides on the inside in the width direction of the post member 1, and is lowered with the hanging jig 7 positioned almost directly above the post member 1. Accordingly, the guide plates 46 and 48 guide each frame 14 so as to land at a correct gripping position while sliding in the vertical and horizontal directions.

In FIGS. 1 to 3, reference numeral 50 designates a pull cord for keeping the post member 1 parallel, and when the post member 1 deflects during transportation, pulls the pull cord 50 to keep it parallel. , Together with the unlocking string member 40, is pulled out of the beam 10 through a guide pulley 52 that is bearing inside the beam 10.

Next, a case where the post member 1 is conveyed from the carry-in / out position [A] to the stock position [B] using the hanging jig 7 having the above structure will be described with reference to FIG.

First, the trolley 5 is stopped at the loading / unloading position [A] in a state where the chuck portion 18a is closed, that is, at a position where the frame 14 is raised with respect to the beam 10, and hooks toward the post member 1 at this position. If you drop 4,
The hanging jig 7 is lowered, and the guide plates 46 and 48 come into contact with the front, rear and inside of the post member 1, and are further lowered in this state, whereby each frame 14 is positioned at the gripping position, as shown in FIG. Then, suspend the suspension.

Next, when the electromagnetic cylinder 36 is turned off by the remote device, the lock pin 34 is pulled out, and the frame 14 descends by its own weight. As a result, as shown in FIG. The front and rear of the post member 1 are chucked by the chuck portion 18a.

In this state, when the beam 10 is lifted by the crane, the chuck 1 is moved through the link lever 26.
An upward force is applied to the upper end of 8, and the locked state can be maintained without being locked by the lock pin.

After the gripping operation is completed, the wire of the hook 4 is wound up, the post member 1 held by the hanging jig 7 is hung, and then the trolley 5 is run to stop at an appropriate laminating place on the stock position [b]. Then, the hook 4 is lowered again to land on the stacking position.

When the beam 10 is further lowered in this state, the beam 10 is lowered while the frame 14 is stopped on the post member 1, and the chucks 18a are reduced by this relative raising operation. It is detached from the post member 1.

The lock hole 12a and the lock pin 34
When the position of the lock pin 34 coincides with the position of the lock hole 12a by the urging force of the spring built in the electromagnetic cylinder 36,
As a result, the frame 14 is locked at the raised position of the guide post 12, the chuck portion 18a is held in a detached state, and when the hook 4 is raised, the hanging jig 7 is separated from the post member 1 (( a)).

The operation method for transporting from the stock position [b] to the carry-in / out position [a] is the same as that described above.

In the above embodiment, one lock hole 12b into which the lock pin 34 is inserted is formed in the guide post 12, but two lock holes may be formed vertically separated from each other.

[0036]

As described in the above embodiment, in the hanging jig according to the present invention, both the article supporting arms extend the two chuck portions via the link mechanism with the lowering operation of the frame with respect to the beam. In the direction of movement of the frame, the two chucks are reduced in accordance with the upward movement of the frame, and the suspended load is grasped or removed in accordance with the expansion and contraction operation. Unnecessary cargo handling work such as slinging and removing is unnecessary. Further, in the present invention, the frame is locked by operating the drive mechanism by remote operation and causing the lock pin to protrude after being gripped or detached, thereby preventing a drop accident during transport.

Further, in the present invention, in the case of the structure of claim 2, when the hanging jig is roughly positioned on the upper part of the suspended load and is lowered, each of the suspended jigs is positioned on both sides in the length direction and on both sides in the width direction of the suspended load. Since the guide plates are in sliding contact with each other and guided while self-correcting the two frames to the gripping position of the suspended load, the positioning operation at the time of chucking the suspended load becomes easy.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a portal crane to which a hanging jig of the present invention is applied.

FIG. 2 is a side view showing the entire hanging jig.

FIG. 3 is an enlarged sectional view of a portion A in FIG. 2;

FIG. 4 is a perspective view of a main part.

FIGS. 5A and 5B are explanatory views showing the operation of a chuck portion of the hanging jig.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 post member (hanging load) 7 hanging jig 10 beam 12 guide post 12 a lock hole 14 frame 18 article support arm 18 a chuck section 26 link lever 34 lock pin 36 electromagnetic cylinder (drive mechanism) 46 vertical guide plate 48 lateral guide plate

Continuation of the front page (56) References JP-A-3-264357 (JP, A) JP-A-62-114893 (JP, A) JP-A-62-215493 (JP, A) JP-A-5-92279 (JP) , U) Jpn. Sho 62-157778 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B66C 1/00-1/68

Claims (2)

(57) [Claims] 1. A guide post suspended from a lower part of a beam, a frame inserted into the guide post and guided up and down, a pivotally pivotally supported left and right side of the frame, and a chuck portion at a distal end. A pair of article support arms protruded integrally, and one end pivotally supported by upper swing ends of the respective support arms,
The other end is pivotally supported on both sides of the beam, and each time the frame is moved up and down, the support arms are swung in the expanding and contracting directions to move the chuck portions toward and away from the gripping position of the suspended load. A link lever, a lock pin located at the center of the frame and protruding and retractable in a lock hole opened to the guide post, and a drive mechanism for remotely operating the lock pin. Hanging jig. 2. The frame is arranged at the lower end of both ends of the beam, and a vertical guide plate which is in sliding contact with the longitudinal end surface of the suspended load is fixed to a lower portion of an outer end surface of each frame, and a lower portion is fixed to left and right lower portions. The hanging jig according to claim 1, wherein a lateral guide plate that slides on both sides in the width direction of the suspended load is fixed.