JPH08277086A - Automatic hook - Google Patents

Abstract

PURPOSE: To provide a safe and automatic hook where a slinging wire is not removed from the hook even when the load applied to the hook is slightly reduced while a hoisted cargo is transferred. CONSTITUTION: An automatic hook is provided with a hoisting accessory center body 1, a hook 2, and a stopper 4 to cover a support part 10 of the hook. The hook 2 is turnably and axially fitted to the hoisting accessory center body 1, and the stopper 4 is turnably and axially fitted to the hook 2 or the hoisting accessory center body 1. The hoisting accessory center body 1 is provided with hoisting member fitting parts 14, 15 on the upper and lower ends, the hook 2 has a weight part provided with the hook-shaped support part 10 on one end side and a weight 3 on the other end side around an axially fitted part 7, and the axially fitted part 7 of the hook 2 is between the support part 10 and the weight part. The stopper 4 is provided with a hook covering part and a balance part including the center of gravity of the stopper while the axially fitted part 7 of the stopper 4 is between the hook covering part and the balance part. An abutting part 9 to be abutted on the inner side of the hook support part 10 is provided in the vicinity of the tip of the hook covering part of the stopper 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook for use in laying down building members, carrying timber, stone and sand, etc., and more particularly to an automatic hook for automatically removing a sling wire when a suspended load is unloaded. is there.

[0002]

2. Description of the Related Art FIG. 1 is a view showing a usage state of an automatic hook according to the present invention. However, since there is a common part in the description of the conventional example, a general usage example of the hook will be described based on FIG. Outline.

Reference numeral (32) is an arm portion of the crane, and a hoist (31) is attached to the tip portion of the arm portion. A so-called automatic hook is attached to the crane hook (33) via a wire (12). The automatic hook is a lifting tool used for loading and unloading construction materials, and carrying timber, stones, earth and sand, etc. When the suspended load is unloaded to a predetermined position by the crane operation, the hook (2) slings the wire (13). ) Will come off automatically.

Since it is not necessary to remove the sling wire from the hook and to collect the wire, it is suitable for unloading to a dangerous place such as a narrow place or a high place.

8 and 9 are views showing a conventional automatic hook. The automatic hook is the hook body (1 ') and the hook
(2 '), both are connected by a shaft portion (7'), and can rotate about the shaft portion (7 ') as a fulcrum.

The hanging tool central body (1 ') is attached by a mounting shaft (5a') at a shackle (14 ') which is a hanging member mounting portion connected to a wire (12') and a shackle supporting portion (5 '). Therefore, the hanging tool central body (1 ') and the shackle (14') can rotate about the mounting shaft (5a '). Also, the hanging body center body
A wire holding portion (15 ') to which one end of a sling wire (13') is attached is provided at the lower part of (1 '). A weight (3 ') is provided at one end of the hook (2') opposite to the fishing support (10 '). (4 ') is a stopper for preventing the slinging wire (13a') from coming off during suspension, and is fixed at (4a ').

[0007] In use, the other end (13a ') of the sling wire (13') attached to the wire holding portion (15 ') is passed through the sling or the through hole of the suspended load and then the fishing support portion (of the hook (2') ( 1
0 ') to hang it. In this state, wind the wire (12 ') with the hoist (31) and hook (2')
Even if the weight of the sling wire (13 ') is not taken into consideration, the weight is half the weight (W) of the suspension load (W) (1/2 W). This weight pulls the hook support portion (10 ') of the hook (2') downward, the tip of the hook (2 ') is directed higher than horizontal, and contacts the stopper (4').
The other end (13a ') of (13') remains hooked on the fishing support (10 ') of the hook (2') and is lifted as it is.
Then, the crane arm (32) is rotated to move the suspended load to a desired position.

When lowering the suspended load, the wire (12) is lowered by the hoist (21) to ground the suspended load. Then, as the wire (12) is unloaded, the weight of the suspended load is applied to the ground plane, and the weight of the hook (2 ') is reduced. If the moment the weight (3 ') lowers with the shaft (7') as the fulcrum becomes greater than the moment the hook (2 ') lowers, the hook (2') will reverse and the hook
The tip of (2 ′) faces downward from the horizontal and the stopper
Since it is separated from (4 '), the other end (13') of the sling wire (13 ')
Comes off. After that, if the wire (12 ') is wound up, the slinging wire (13') has one end engaged with the wire holding portion (15 '), so that it can be collected together with the automatic hook.

[0009]

At the construction site, there is a case where materials are hoisted from the roof of a house under construction and taken into the inside of the house, but in this case, due to a mistake in the operation of the crane, etc. If the suspended load collides with the wall surface, the weight of the hook momentarily decreases due to the reaction. Further, when a suspended load is laid on the upper surface of the wall, the weight of the hook is greatly reduced. In such a case, in the case of the conventional automatic hook, the hook rotates due to the action of the weight and the tip of the hook lowers and separates from the stopper, so the wire may come off the hook and the suspended load may drop. It is very dangerous for workers and passersby near the. This is not only a problem at the construction site but also a wide problem in the lifting work of luggage using the automatic hook.

Therefore, even if the hanging load collides with the wall surface during the transfer or the hook slightly rotates in the detaching direction by riding on the wall, the sling wire does not come off even if the weight load on the hook is slightly reduced. There is a need for a secure automatic hook.

[0011]

The automatic hook of the present invention comprises:
Even if the weight load on the hook (2) is reduced, the hook fishing support
The sling wire (13) is prevented from coming off by keeping the (10) closed.

Specifically, (A) The hanging tool central body (1), the hook (2), and the stopper (4) for closing the hook support portion (10) are provided, and the hook (2) is It is rotatably attached to the hanging body central body (1),
The stopper (4) is rotatably attached to the hook (2) or the hanging tool central body (1), and the hanging tool central body (1) is attached to the upper and lower ends of the hanging member mounting portions (14), (). 15) equipped with hooks (2)
Has a hook-shaped fishing support part (10) on one end side around the shaft part (7) and a weight part provided with a weight (3) on the other end side, and the shaft attachment part of the hook (2)
(7) is between the fishing support (10) and the weight, and the stopper (4)
Has a hook closing part and a balance part including the center of gravity of the stopper, the shaft attachment part (7) of the stopper (4) is between the hook closing part and the balance part, and the tip of the hook closing part of the stopper (4) In the vicinity, there is a contact part that contacts the inside of the hook support part (10).
(9) is provided.

(B) Suspension center body (1) and hook (2)
And a stopper for closing the hook support (10).
(4), the hook (2) is rotatably attached to the hanging tool central body (1), and the stopper (4) rotates between the hook (2) or the hanging tool central body (1). The suspension center body (1) is equipped with suspension member attachment parts (14) and (15) at the upper and lower ends, and the hook (2) is centered around the shaft part (7). It has a hook-shaped fishing support part (10) on one end side and a weight part with a weight (3) on the other end side, and the shaft attachment part (7) of the hook (2) overlaps with the fishing support part (10). Between the weight part, the stopper (4) has a hook closing part and a rope attaching part (8), and the shaft attaching part (7) of the stopper (4) is a hook closing part and a rope attaching part (8). In the vicinity of the tip of the hook closing part of the stopper (4), there is provided an abutting part (9) that comes into contact with the inside of the hook support part (10) of the hook, and the stopper (4) of the hook (2) is provided. A spring is provided between the stopper (4) and the hanging body central body (1) or between the stopper (4) and the hook (1) so as to close the fishing support (10). (16) is arranged, and the rope attachment part (8) of the stopper (4) resists the force of the spring (16) and the fishing support part of the hook (2).
One end of the release rope for opening (10) is attached.

(C) The hook (2) is rotatably attached to the hanging tool central body (1), and the hanging tool central body (1) has a hanging member mounting portion (14) at the upper and lower ends thereof. Equipped with (15), hook
(2) has a hook-shaped fishing support part (10) on one end side around the shaft part (7) and a weight part provided with a weight (3) on the other end side, and the hook (4) is attached to the shaft. Department
(7) is between the fishing support portion (10) and the weight portion, and the weight portion has a locking hook portion (21) for preventing the weight portion from being separated from the hanging tool central body (1). , A lever (20) integrated with the lock hook is provided, and the lock hook is provided on the hanging body central body (1).
A pin (22) for hooking (21) is provided, and one end of a release rope (23) for removing the locking hook (20) from the pin (22) is attached to the lever (20). ing. Characterized by

[0015]

According to the first and second aspects of the present invention, even if the weight load on the hook (2) is reduced and the tip of the hook is lowered to a certain extent, the stopper (4) can be fixed to the hook (2) due to the center of gravity of the stopper (4) Since the hook fishing support portion (10) is rotated together with the hook fishing support portion (10), the sling wire (13) is hard to come off.

According to the third aspect of the present invention, even if the weight load on the hook (2) is reduced and the hook (2) moves in the opening direction, the spring (provided between the stopper (4) and the hook (2) ( The stopper (4) always rotates together with the hook (2) by the force of 16) to close the hook fishing support portion (10), so that the sling wire (13) cannot be removed.

According to a fourth aspect of the present invention, even if the weight load applied to the hook (2) is reduced, the locking hook portion (21) has the hanging tool central body.
Since the hanging tool central body (1) keeps closing the hook fishing support (10) because it is caught by the pin (22) of (1), the sling wire (13) cannot be removed.

[0018]

【Example】

Example 1 An example of the present invention is shown in FIGS.
Also, FIG. 4 shows a side view thereof. The automatic hook is composed of a hanging body central body (1) and a hook (2), both of which are connected by a shaft portion (7) and can rotate about the shaft portion (7) as a fulcrum.

The hanging tool central body (1) is attached to the shackle (14) connected to the wire (12) and the shackle supporting portion (5) by a mounting shaft (5a), and is connected to the hanging tool central body (1). The upper shackle (14) can rotate about the mounting shaft (5a). Also, a sling wire (13) is attached to the lower part of the hanging body central body (1).
It is equipped with a lower shackle (15) with one end attached to it, and is attached by a mounting shaft (6a) at the shackle support (6). ) Can be rotated. One end of the hook (2) is a fishing support (10) for hanging the sling wire (13), and the other end is provided with a weight (3).

Reference numeral (4) is a stopper for preventing the slinging wire (13) from coming off during lifting, and is rotatably attached to the shaft portion (7). Stopper (4) has a pin on the tip.
Since (9) is provided, it can rotate only within the opening of the hook with the shaft (7) as a fulcrum.

At the time of use, the other end of the sling wire (13) attached to the lower shackle (15) is slid or suspended through a hanging load and then hooked on the fishing support portion (10) of the hook (2) for slinging. . When the wire (12) is wound up by the hoist (21) in this state, the hook wire (13) is attached to the hook (2).
Even if you do not consider the weight of, the weight is half the weight (W) of the suspension load (W). This weight pulls the hook (2) of the hook (2) downward so that the tip of the hook points above the horizontal and contacts the pin (9) at the end of the stopper, so the sling wire (13) is (2) Fishing branch
It will be caught in (10) and can be lifted. In this state, the center of gravity of the stopper is on the left of the vertical upper side of the center of the shaft (7) .Therefore, a force that tries to rotate counterclockwise in the figure acts on the stopper, and the hook support (10) of the hook (4) ) Is blocked.

When the suspended load is unloaded, the wire (12) is unloaded by the hoist (21) to ground the suspended load. Then, as the wire (12) is unloaded, the weight of the suspended load is applied to the ground plane, the weight applied to the hook (2) is reduced, the hook is inverted, and the hook tip (11) tends to face downward. .

However, the stopper (4) is not fixed like the conventional example and can rotate, and the pin (9) provided at the tip of the stopper (4) is caught in the tip (11) of the hook (2). As the hook tip (11) faces a little downward, the hook support (10) remains blocked by the stopper (4) and the sling wire (13) does not come off.

Therefore, even when the load is collided with the wall surface during lifting due to an operation error of the crane, or when the weight load is reduced such that the load is loaded on the upper surface of the wall, the wire is easy to wire. Since it does not come off, it is safe because the suspended load does not drop.

When the wire (12) is further lowered so that the center of gravity of the stopper is located on the right side of the vertical line about the center of the shaft (7), the stopper tends to rotate in the clockwise direction in FIG. (4) is reversed, the hook tip (11) and the stopper tip are separated, and the hook fishing support (10)
Will be opened.

Further, when the hook tip (11) faces downward, the sling wire (13) slides off from the hook supporting portion (10) of the hook.
It comes off from (2). After that, if you wind the wire (12),
Since the sling wire (13) has one end engaged with the lower shackle (15), it can be collected together with the automatic hook.

The stopper can be changed by changing the shape of the stopper or attaching a weight to the balance portion of the stopper.
It is also possible to adjust the range in which the hook (4) can close the hook support portion (10).

In the present embodiment, the hanging body central body (1), the hook (2) and the stopper (4) are attached by the same shaft portion.
It is not always necessary to attach the same shaft, for example, a hook
The mounting shaft for the (2) and the hanging body central body (1) may be separated from the mounting shaft for the stopper (4) and the hook (2). This also applies to the second and third embodiments.

[Embodiment 2] FIGS. 5 and 6 show another embodiment of the present invention. A spring (16) is provided between the hanging tool central body (1) and the stopper (4), and one end thereof is attached to a pin (9) at the tip of the stopper. Due to this spring (16), a force is always exerted on the stopper (4) in the direction of closing the hook support portion of the hook.

Therefore, even if the weight applied to the hook (2) becomes zero, the stopper tip comes into contact with the hook tip (11) and keeps closing the fishing support (10), so that the sling wire (13) cannot be removed.

When unloading the suspended load, the suspended rope is attached to the ground and then the release rope mounting portion provided on the upper part of the stopper (4)
Pull the release rope (17) attached to (8) to
It is advisable to separate the stopper tip from the hook tip (11) against the force of (16).

[Embodiment 3] In Embodiment 2, the release rope (17)
Was pulled from below, but depending on the work, the operator may want to pull the release rope from the side of the automatic hook. Therefore, the stopper (4) in Example 2 was formed into an L shape, and the release rope mounting portion (8) was provided on the protruding portion (shown by a chain line in FIG. 6).

[Fourth Embodiment] FIG. 7 shows another embodiment. A locking hook (21) is provided on a part of the weight (3), and a pin (22) for hooking the locking hook is provided on the hanging tool central body (1). Hook when hanging a load
The fishing support (10) of (2) is pulled downward by the weight of the suspended load, and the locking hook (21) provided with the weight (3) is attached to the pin (2).
Even if the hook is caught on 2) and the weight on the hook is reduced thereafter, the locking hook (21) remains hooked on the pin (22) by the spring action, and the hook tip (11) moves the lifting tool central body (1). As it is fixed in a penetrating state, the central body (1) is hooked
It will block the fishing support (10) of (2) and sling wire (1
3) does not come off.

When unloading the suspended load, the suspended load is grounded and then the lock release lever (20) integrated with the locking hook (21)
Pulling the release rope (23) tied to the lock hook (21)
Comes off the pin (22). Release rope (23) is roller (24)
Since it is through, it can be pulled not only from below but also from above and from the side.

[0035]

As described above, the automatic hook of the present invention is highly safe because the sling wire does not come off even if the weight load of the suspended load on the hook is reduced.

When assembling a prefabricated house, the wall member may be inserted into the groove of the floor member at an angle, but in such a case, the wall member, which is a load, should be suspended. It would be convenient if you could tilt it while working,
Since the conventional automatic hook would come off from the hook relatively early in the work, it took a lot of manpower to support the wall member. However, when the automatic hook of the present invention is used, in the case of the first embodiment, the hook does not come off until the weight load applied to the hook is considerably reduced, and in the second to fourth embodiments, the hook does not come off even if the weight load becomes zero. Therefore, there is also an advantage that the work can be carried out relatively easily.

[Brief description of drawings]

FIG. 1 is a diagram showing a use situation of an automatic hook.

FIG. 2 is a diagram showing an embodiment of the present invention (a state in which luggage is hooked)

FIG. 3 is a view showing an embodiment of the present invention (a state in which a sling wire is detached from a hook)

FIG. 4 is a side view of the embodiment of the present invention.

FIG. 5 is a view showing another embodiment of the present invention (a state in which a hook is loaded with luggage)

FIG. 6 is a view showing another embodiment of the present invention (a state where the sling wire is detached from the hook).

FIG. 7 is a diagram showing another embodiment of the present invention.

FIG. 8 is a view showing a conventional example (a state in which luggage is hooked on the hook)

FIG. 9 is a view showing a conventional example (a state where a sling wire is detached from a hook)

[Explanation of symbols]

 (1) Suspension center body (2) Hook (3) Weight (4) Stopper (7) Shaft part (8) Release rope mounting part (9) Stopper tip pin (contact part) (10) Hook fishing Branch (12) Wire (13) Sliding wire (14) Upper shackle (hanging member mounting part) (15) Lower shackle (hanging member mounting part) (16) Spring (17) Release rope (20) Lock release lever ( 21) Locking hook (22) Pin (23) Release rope (24) Roller (31) Hoist (32) Crane arm

Claims (4)

[Claims] 1. A hanging body central body, a hook, and a stopper for closing a fishing support portion of the hook, wherein the hook is rotatably attached to the hanging body central body, and the stopper is the hook or the hanging equipment. It is rotatably pivoted between the central bodies, the hanging body central body is equipped with hanging member attachment parts at the upper and lower ends, and the hook is a hook-shaped fishing support part on one end side around the shaft part, etc. It has a weight part with a weight on the end side, the shaft attachment part of the hook is between the fishing support part and the weight part, and the stopper has the hook closing part and the balance part including the center of gravity of the stopper. The stopper shaft attachment portion is between the hook closing portion and the balance portion, and the stopper is provided with an abutting portion that comes into contact with the inside of the hook supporting portion of the hook near the tip of the hook closing portion of the stopper. hook. 2. A hanging body central body, a hook, and a stopper for closing a hook supporting portion of the hook, wherein the hanging body central body, the hook, and the stopper are rotatably attached to the same shaft portion. The central body of the hoisting tool has hanging member attachment parts at the upper and lower ends, and the hook has a hook-like fishing support part at one end centering on the shaft part and a weight part with a weight at the other end side. However, the hook shaft attachment part is between the fishing support part and the weight part, the stopper has the hook closing part and the balance part including the center of gravity of the stopper, and the stopper shaft attachment part is the hook closing part and the balance part. The automatic hook is characterized in that an abutment portion abutting the inside of the hook support portion of the hook is provided near the tip of the hook closing portion of the stopper. 3. A hanging body central body, a hook, and a stopper for closing a hook supporting portion of the hook, wherein the hook is rotatably attached to the hanging body central body, and the stopper is the hook or the hanging equipment. It is rotatably pivoted between the central bodies, the hanging body central body is equipped with hanging member attachment parts at the upper and lower ends, and the hook is a hook-shaped fishing support part on one end side around the shaft part, etc. It has a weight part with a weight on the end side, the shaft attachment part of the hook is between the fishing support part and the weight part, and the stopper has the hook closing part and the rope attachment part. The part is between the hook closing part and the rope attaching part, and a stopper is provided near the tip of the hook closing part of the stopper so as to contact the inside of the hook supporting part of the hook, and the stopper closes the fishing supporting part of the hook. Between the stopper and the center of the hanger, or between the stopper and the flap. A spring is arranged between the hook and the hook, and one end of a release rope for opening the fishing support of the hook against the force of the spring is attached to the rope attachment part of the stopper. hook. 4. A suspender central body and a hook are provided, and the suspender central body and the hook are rotatably mounted on the same shaft portion, and the suspender central body has a hanging member attachment portion at an upper end and a lower end. The hook has a hook-shaped fishing support part on one end side around the shaft part and a weight part with a weight on the other end side, and the shaft attachment part of the hook is the fishing support part and the weight part. The hanging weight has a locking hook to prevent the weight from moving away from the hanging tool central body, and a lever integrated with the locking hook. The automatic hook is characterized in that the locking hook is provided with a pin for hooking, and the lever is attached with one end of a release rope for removing the locking hook from the pin.