JPH0812250A - Hook device - Google Patents

Abstract

PURPOSE:To improve the operating property of a hook device by mutually connecting a plurality of rods and hooks when a load is hoisted, and arranging them vertically straight, and making the opening mouth of the hook large and then fixing it so as to easily dry out the hook from the load when the load is set. CONSTITUTION:Right and left wall plates 1, 2 are arranged at desired spaces, and a plurality of rod joint pins 3 being vertically movable ira each of slots 11, 21 is arrangedly provided between the wall plates. The first rod 4 having a wire fixing part 42 at one end 41 and a lock locking part at the other end 43 is provided between the right and left wall plates 1, 2, and moreover a pair of the second rods 5, 6 is provided. In addition, a hook 8 is attached together with the second rods 5, 6, and its opening part 82 and top part 83 are arranged outward. When the other end 43 of the first rod 4 is positionally controlled, a lock claw 9 for locking a lock locking part is provided. On the other hand, a hook guide pin 10 for keeping the open state of a hook opening part 82 is provided at a locking time or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook device capable of automatically withdrawing a hook portion after installation of an object to be lifted. More specifically, the present invention hangs the object to be hung by a hook device, and when installed at a predetermined location,
The present invention relates to an automatic withdrawal type hook device capable of surely withdrawing a hook portion from a locking portion of an object to be lifted without the help of human hands or electric remote operation.

[0002]

2. Description of the Related Art As an automatic withdrawal type hook device of this type,
The following are mechanical types that do not rely on electrical remote control. For example, when the load of an object to be hung up becomes zero, that is, when the object to be hung up is installed at a predetermined installation location by using the elastic force of a balance weight and a spring, the slip-off prevention member immediately outside the hook. There is known a structure in which the hook portion and the external stopper member are rotated to change the balance, and the hook portion is rotated so as to be easily removed.

In the structure in which the hook is removed immediately after the load of the object to be lifted becomes zero, when the object to be lifted is erroneously installed and the object is to be hoisted again to the correct installation site. However, it is inconvenient because the hook part has already been moved to the process of being removed from the object to be lifted. Further, in this type of hook device, when the load from the lifting target object is zero due to contact with other structures or the like during transportation of the lifting target object,
It is extremely dangerous because the hook removal mechanism is activated. Furthermore, when a fish reef of several tons to several tens of tons is hoisted and installed on the seabed by the hook device having the above-mentioned structure, there is a big drawback when the fish reef is brought into the sea surface. In other words, when a fish reef is brought into the sea surface, the effect of buoyancy acting on the fish reef and the effect of swelling on the sea surface because the lifting crane is also installed on the ship, it is easy to realize a state of zero load. With a zero load, the hook part quickly reverses and is pulled out, which causes a serious drawback that the fish reef is dropped into the sea.

On the other hand, the automatic withdrawal type hook device operated by remote electric operation is designed for work on the ground or at a high place and is expensive with a built-in battery and the like. Needless to say, since this type of electric drive is electrically driven, it is not suitable for underwater operations such as installation of the above-mentioned fish reef. In addition, the mechanical and electrical automatic withdrawal type hook devices described above often have a special hook-shaped structure in all models, and it takes time to obtain parts when converting the hooks, which is a high cost factor. It will be.

[0005]

SUMMARY OF THE INVENTION The present invention was devised to overcome the above-mentioned drawbacks of the prior art. The hook device of the present invention utilizes a hook member having a conventional and extremely ordinary shape and structure, and is pivotally attached to the base of the hook member (a part opposite to the tip end of the hook) so as to be rotatable relative to each other. When the first and second rod members are connected to each other and the members are pivotally mounted and rotated, even if the load from the object to be lifted is zero, the hook portion can be easily moved to the final removal position. (It means that the hook part is locked and fixed so that it can be easily removed from the locking part of the object to be lifted and enters the removal process.) In other words, the lock part is the final It was developed based on the knowledge that the hook function can be maintained even when the load from the object to be lifted is zero up to the removal position.

[0006]

SUMMARY OF THE INVENTION The present invention can be summarized as follows. Left and right wall plates (1, 2) arranged at desired intervals
And each wall plate has a vertical hole (11, 2, 2) of a desired length.
1. Left and right wall plates (1, 2) having 1) and having substantially horizontal bottoms (12, 22); 2. First and second rod joint pins (3), which are provided between the elongated holes (11, 21) and are arranged so as to be vertically movable within the elongated holes (11, 21), A first rod (4) arranged between the left and right wall plates (1, 2), wherein one end portion (41) is a wire fixing portion (4).
2), the other end portion (43) is pivotally attached to the first and second rod joint pins (3), and the other end portion (43) has a lock engaging portion (44) on a side portion thereof. First rod (4), 4. A pair of second members arranged between the left and right wall plates (1, 2)
One end (51, 61) of the rod (5, 6) is axially attached to the joint pin (3) together with the first rod (4), and the other end (52, 62) is a hook (8). 4. A pair of second rods (5, 6) axially attached to the second rod and the hook joint pin (7) together with the base (81) of FIG. A hook (8), the base (8) of the hook (8) being
1) is pivoted together with the second rod (5, 6) by the second rod and the hook joint pin (7), and the hook opening (82) and the hook tip (83) of the hook (8).
5. Hooks (8) arranged outside the bottom parts (12, 22) of the left and right wall plates (1, 2); A lock claw (9) disposed between the left and right wall plates (1, 2), the other end (4) of the first rod (4).
6. Lock claws (9) for locking and locking the lock locking portion (44) of the first rod (4) when the position of 3) is restricted below the elongated holes (11, 21); A hook guide pin (10) disposed between the left and right wall plates (1, 2) for engaging the rotation guide of the hook (8) and the lock engaging portion (44) and the lock claw (9). The present invention relates to a hook device comprising: a hook guide pin (10) for maintaining the opening state of the opening portion (82) of the hook (8) in a mating relationship.

The technical constitution and embodiments of the present invention will be described below in detail with reference to the drawings. Needless to say, the present invention is not limited to the illustrated one.

As described above, the hook device of the present invention utilizes a hook member having a normal shape structure, that is, a hook member known as a hook (8) in the drawings described later, and the hook member is known. In the case where the first and second rod members pivotally rotatably attached to each other are connected to the base of the member (a portion opposite to the hook tip), and these members are pivoted, Even when the load from the object to be hoisted is zero, the hook part can be easily pulled out to the final removal position (the hook part is locked and locked so that the hook part can be easily pulled out from the locking part of the object to be hoisted, and the positional relationship immediately before entering the withdrawal process. In other words, the hook function is maintained (reproduced) even if the load from the object to be hung is zero until the hook reaches the final withdrawal position. Can, have been developed based on the finding that.

As described above, the hook device of the present invention is mainly composed of the hook member and the first rod member and the second rod member which are rotatably pivotally mounted and connected to the hook member. As will be described later, the arrangement and arrangement of these members are as follows. (i) When a hoisting object such as a fish reef is hoisted, the hook member, the first rod member, and the second rod member are arranged in a substantially straight line in the vertical direction, and the load of the hoisting object is applied to the hook member. To be done. (ii) When the object to be hoisted is installed at the intended installation location, the linear alignment relationship of the members is largely displaced by pivoting of the members so that the hook member can be easily removed from the object to be hoisted. Fix with the opening enlarged. That is, the hook member, particularly the opening thereof, is bent to an angle at which it can be easily removed from the locking portion of the object to be lifted, particularly by the rotational displacement of the second rod and the hook, and particularly to ensure the removal, the first member. The displacement angle is maintained through the rod locking mechanism.

According to the hook device of the present invention, due to the straight line arrangement (arrangement) of the three members, the load from the object to be lifted becomes zero and the hook member takes the arrangement relation up to the removing step as in the prior art. The greatest feature is that the members are not immediately pulled out of the locking part of the object to be lifted, but the arrangement structure of these three members is adopted so that the hook function can be restored (reproduced). . In other words, the hook device of the present invention, in the process of (i) ~ (ii), the force applied to the hook member becomes zero such that the load of the lifting object becomes zero, and the three members are aligned. The biggest feature is that the hook function is not immediately removed from the locking part of the object to be hung up as in the past, because the hook function is restored (reproduced) even if it is displaced a little from the arrangement relationship. Is to have.

Hereinafter, the hook device of the present invention will be described in detail with reference to the drawings. Needless to say, the present invention is not limited to the illustrated one.

FIG. 1 is a perspective view showing a part of a hook device (A) of the present invention as seen through. In addition, FIG. 1 shows the arrangement relationship of the hook portions in a state where the hook portions are pulled out from the locking portion (not shown) of the object to be lifted, and is related to FIG. 3 described later. is there. Of particular note is the opening angle of the opening (82) of the hook (8). As shown, the hook device (A) of the present invention is composed of the following components.

1. Left and right wall plates (1, 2) arranged at desired intervals are used. And each of the wall plates (1,
2) has vertical holes (11, 21) of a desired length and a substantially horizontal bottom (12, 22). In the present invention, the size (height in the vertical direction) of the elongated holes (11, 21) will be described in detail by the operation description based on FIGS. When the load becomes zero, it may be determined based on the design of what degree of allowable range the hook function is maintained / reproduced instead of immediately losing the hook function as in the conventional case. In addition, the substantially horizontal bottom (12,
2), as shown in FIG. 2 to be described later, after locking the locking portion of the object to be lifted with the opening (82) of the hook (8), the opening (82) is connected to the hook tip ( 8
It is important in cooperating with 3) and obstruction. That is, the substantially horizontal bottom portions (12, 22) are important in cooperating with the hook tip portion (83) so as not to drop the lifting target object when the lifting target object is lifted by the hook device. It fulfills various functions. Note that FIG. 1 shows clearance members (1a, 1b) for arranging the left and right wall plates (1, 2) at a predetermined interval.

2. Between the elongated holes (11, 12) formed in the two left and right wall plates (1, 2), there is a vertical direction in the elongated holes for axially attaching a first rod and a second rod described later. Movable first and second rod joint pins (3) are provided. It is needless to say that washers and nuts may be provided at both ends of the joining pin (3) as shown in the figure in order to prevent the joining pin (3) from coming off from the elongated holes (11, 12). Is.

3. A first rod (4) is arranged between the left and right wall plates (1, 2). The first rod (4) has a wire fixing portion (42) for fixing a lifting rope or a wire (hereinafter, referred to as a wire) for lifting from a lifting device (crane) at one end portion (41) thereof, Moreover, the other end portion (43) is pivotally attached to the first and second rod joint pins (3). Further, the hook (8) is pulled out from the engaging portion of the object to be lifted in cooperation with the lock claw (9) described later on the peripheral side portion of the other end portion (43) of the first rod (4). A lock locking portion (44) (see FIGS. 2 to 3) for locking at a position suitable for is formed.

4. A second rod (5, 6) having a two-piece structure (a pair) is disposed between the left and right wall plates (1, 2). The pair of second rods (5, 6) has one end (51, 6).
1) is axially attached by the first and second rod joint pins (3) together with the other end (43) of the first rod (4). The other ends (52, 62) have hooks (8).
The second rod and the hook joint pin (7) are pivotally attached together with the base (81). In addition, since the second rod (5, 6) having a two-piece (pair) structure is arranged so as to sandwich the first rod (4) having a one-piece structure, and is axially attached by the joint pin (3), It goes without saying that a spacer member (1c) may be disposed on the side portion of the first rod (4) between the first rod (4) and the left and right wall plates (1, 2) as illustrated. That is not the case.

5. A hook (8) axially attached to the left and right wall plates (1, 2) together with the other end (52, 62) of the second rod (5, 6) by the second rod and the hook connecting pin (7). ) Base (81) is provided. That is, the base (81) of the hook (8) is pivotally attached together with the second rod (5, 6) by the second rod and the hook connecting pin (7), and the opening (82) of the hook (8). ) And the tip portion (83) are the bottom portions (12, 12,
22) so that it is located outside. Regarding the above-mentioned point, the hook (8) securely locks the locking part of the object to be hoisted (for example, a fish reef), and cooperates with the bottom parts (12, 22) of the left and right wall plates (1, 2) at the time of hoisting. Therefore, it is important to prevent the object to be lifted from falling. A more specific arrangement of the hooks (8) to the left and right wall plates (1, 2) is shown in FIG.

6. A lock mechanism (9) is arranged between the left and right wall plates (1, 2). The lock mechanism (9) may have any shape and structure. The lock mechanism will be described below with the lock claw (9). When the other end portion (43) of the first rod (4) is positioned below the elongated hole (11, 21) (bottom portion) via the joining pin (3), the lock claw (9) is regulated. , A lock engaging portion (44) formed on a peripheral side portion of the other end portion (43) of the first rod (4)
It serves the function of locking and locking. In the present invention, when the lock engaging portion (44) of the first rod (4) is engaged with and locked by the lock claw (9), the hook (8).
The opening (82) is a locking part (not shown) for the object to be lifted.
Will be placed at a position suitable for pulling out from the hook. Although this point is also shown in detail in FIG. 3, attention should be paid to the positional relationship of the openings (82).

7. A hook guide pin (10) is arranged between the left and right wall plates (1, 2). The hook guide pin (1
0) is the first rod (4), the second rod (5, 6) and the hook, as shown in the operation description of the hook device of the present invention described in detail with reference to FIGS. The linear arrangement relationship of (8) is displaced by rotating each member through the joining pins (3, 7), and the hook (8) is displaced as shown in FIGS. 2 to 3 according to the displacement. Although it is rotationally displaced, it is for guiding this rotational displacement. FIG. 3 shows the final state of rotational displacement, which is important for maintaining the opening (82) of the hook (8) in the illustrated open state,
As a result, the tip portion (81) of the hook (8) can be reliably pulled out from the locking portion (not shown) of the object to be lifted. In the final state of the arrangement relationship of the hooks (8), if the first rod (4) is pulled up through the wire fixing portion (42) of the first rod (4) as described above, Since the hook (8) moves upward while maintaining the positional relationship of the hook (8), the hook (8) is easily removed from the locking portion of the object to be lifted.

It goes without saying that various elements may be added to the hook device of the present invention in addition to the above-mentioned structure. Such additional elements include, for example, as shown, the following: (1) In the lock mechanism (lock claw) (9), use the spring (9
The elastic force of 1) causes the lock claw (9) to move to the first rod (4).
Alternatively, the lock claw (9) may be positively engaged with and locked to the lock engaging portion (44) (see FIGS. 2 to 3). (2) A spring (45) may be provided between both members of the first rod (4) and the second rod (5, 6) so that the members always exert mutually attractive forces. This is effective in quickly placing the hook (8) at the final withdrawal position (see FIG. 3) after the object to be hoisted is installed at an appropriate place. (3) To guide the rotation of the hook (8) more reliably,
The hook guide pin (10) may be used to dispose the hook rotation guide piece (10A). This has one end rotatably arranged on the opening side base (81) of the hook (8) and the other end rotatably attached to the hook guide pin (10). is there. The hook (8) is reliably guided by the hook rotation guide piece (10A).

Next, the operation of the hook device (A) of the present invention will be described with reference to FIGS. FIG. 2 shows a locking portion (not shown) arranged on a lifting target such as a fish reef.
FIG. 9 is a state diagram when the opening (82) of the hook (8) of the hook device (A) of the present invention is locked to the object to be hoisted and conveyed. Note that FIG. 2 is a front view of the hook device of the present invention in which the right wall plate (2) is removed from the left and right wall plates (1, 2) and a part thereof is seen through.

As shown in the figure, the first rod (4) and the second rod (5, 6) are provided with elongated holes (11, 1) of the left and right wall plates (1, 2).
2) The first and second rod joint pins (3), which are exaggerated between
Are arranged in a straight line. Also the hook (8)
Also through the second rod and hook connecting pin (7) to the second
It is arranged immediately below the rods (5, 6). That is, the first rod (4), the second rod (5, 6) and the hook (8) are arranged in a straight line. Needless to say, the joining pin (3) moves in the elongated holes (11, 12) and is restricted in position at the upper part. The above-mentioned arrangement relationship between the first rod (4), the second rod (5, 6), and the hook (8) is easy due to the weight of the object to be hung while the object to be hung by the hook device (A). Will be achieved. Further, the locking portion (not shown) of the object to be lifted is the left and right wall portions (1, 2).
The substantially horizontal bottoms (12, 22) of the hooks (8) cooperate with each other to ensure that they are securely accommodated in the opening (82) and do not fall.

FIG. 3 shows a state in which the object to be lifted is installed at a predetermined installation place and is placed at an optimum position for removing the hook (8) at that time. That is, it is a state diagram in which the hook (8) is removed from the object to be lifted. This state is the upper end of the hanging part (not shown) of the lifting target in the opening (82) of the hook (8) when the lifting target (not shown) is installed at a predetermined installation location. The parts come into contact with the substantially horizontal bottoms (12, 22) of the left and right wall plates (1, 2) due to the downward movement of the hook device (8) due to its own weight, and the hook device (8) of FIG. This is achieved by the large displacement of the second rod (5, 6) from the state and the final disposition state shown in FIG. 3 in accordance with the displacement. Then, at the same time when the hook (8) reaches the final arrangement state described above, it is formed on the side of the hook claw (9) and the other end (43) of the first rod (4) as illustrated. The hook engaging portion (44) is engaged and brought into a locked state. Needless to say, the final arrangement state of the hooks (8) is, as shown in FIG. 3, from the openings (82) of the hooks (8) to the locking portion (not shown) of the object to be lifted.
It is in a state where it can be easily removed.

The final arrangement state of the above-mentioned hook (8) is that the hook claw (9) is engaged with and locked by the lock engaging portion (44) of the first rod (4), and the hook guide pin (10) is further moved. )), When the first rod (4) is lifted again by a crane or the like, the arrangement state is maintained as it is. That is, the hook (8) can be easily removed from the object to be lifted by a small force (the upward movement of the first rod requires only a small force). Then, in the next lifting operation, the lock claw (9) and the lock engaging portion (44)
The engagement and locked state of 1 may be released and the device may be used in the mode shown in FIG.

In the hook device (A) of the present invention, paying attention to the hook (8), the arrangement state (from the closed state of the opening to the open state) is from the state shown in FIG. 2 to the state shown in FIG. It changes. Focusing on the displacement of the first rod (4), the displacement is from "H" in FIG. 2 to "h" in FIG. That is, in the hook device (A) of the present invention, the hook function can be maintained (reproduced) at a desired displacement amount "h '" (where h'> h) between H and h. Is. This can make the hook device of the present invention particularly useful for carrying and arranging underwater structures such as fish reefs. That is, even if the lifting object such as a fish reef is subjected to buoyancy, or the wire is slackened due to the swelling of the waves during the operation of the crane on the ship, the first rod is displaced to Hh ', but the hook (8) is removed. This is because the object to be lifted can be surely placed at a predetermined place without falling into the state, that is, without dropping the object to be lifted from the hook (8).

[0026]

EFFECT OF THE INVENTION The hook device of the present invention lifts an object to be hoisted, conveys it to a predetermined place, and installs it, and then hooks the object to the object to be hoisted without the help of human hands or electric remote control. It is an automatic withdrawal type that can be extremely easily removed from the stop. More specifically, the automatic withdrawal hook device of the present invention, when the object to be hoisted is installed at a predetermined installation location, the opening of the hook portion is arranged and fixed in an arrangement suitable for withdrawal, that is, in the state of this arrangement. In this system, the hook portion is locked, and in this state, the hook device is pulled up to remove the hook portion from the locking portion of the object to be lifted.

A big difference from the conventional automatic withdrawal type is that the hook withdrawal mechanism is operated, for example: ・ When the weight of the object to be lifted becomes zero Needless to say, it is a condition that is satisfied when the object to be hoisted is placed in a different place, and in the latter case, it is an unreasonable condition.) ・Even when conditions such as when the wire of the device (such as a crane) sags (this is also a condition where the weight of the object to be hoisted is relatively zero), the hook device of the present invention Immediately, the hook part is locked in a placement relationship suitable for removal,
The point is that they do not enter the removal process. Needless to say, under the above-mentioned conditions, the conventional product has a serious defect such as the dropping of the object to be lifted because the hook portion immediately locks in a layout relationship suitable for removal and enters the extraction process. Is invited. Therefore, the automatic withdrawal hook device of the present invention is extremely safe and is economical because it has a simple mechanism.

[Brief description of drawings]

FIG. 1 is a perspective view of a part of a hook device of the present invention seen through.

FIG. 2 is a diagram illustrating a usage state of the hook device of the present invention, showing a state when the object to be lifted is being lifted.

FIG. 3 is a diagram illustrating a usage state of the hook device of the present invention, showing a state when the hook portion is removed from the object to be lifted.

[Explanation of symbols]

 A Hook device 1, 2 ...... Left and right wall plates 11, 21 ...... Long holes 12, 22 …… Approximately horizontal bottom 3 ………… 1st and 2nd rod joint pin 4 ………… 1 rod 5, 6 ...... 2nd rod 7 ...... 2nd rod and hook joint pin 8 ...... Hook 81 ………… Hook base 82 ………… Hook opening 83 ………… Hook tip 9 …… … Lock claw 10 ……… Hook guide pin

Claims (4)

[Claims] 1. Left and right wall plates (1, 2) arranged at desired intervals, each wall plate having vertical holes (11, 21) of a desired length and having a substantially horizontal bottom (12, 2).
1. Left and right wall plates (1, 2) having 2), 2. First and second rod joint pins (3), which are provided between the elongated holes (11, 21) and are arranged so as to be vertically movable within the elongated holes (11, 21), A first rod (4) arranged between the left and right wall plates (1, 2), wherein one end portion (41) is a wire fixing portion (4).
2), the other end portion (43) is pivotally attached to the first and second rod joint pins (3), and the other end portion (43) has a lock engaging portion (44) on a side portion thereof. First rod (4), 4. A pair of second members arranged between the left and right wall plates (1, 2)
One end (51, 61) of the rod (5, 6) is axially attached to the joint pin (3) together with the first rod (4), and the other end (52, 62) is a hook (8). 4. A pair of second rods (5, 6) axially attached to the second rod and the hook joint pin (7) together with the base (81) of FIG. A hook (8), the base (8) of the hook (8) being
1) is pivoted together with the second rod (5, 6) by the second rod and the hook joint pin (7), and the hook opening (82) and the hook tip (83) of the hook (8).
5. Hooks (8) arranged outside the bottom parts (12, 22) of the left and right wall plates (1, 2); A lock claw (9) disposed between the left and right wall plates (1, 2), the other end (4) of the first rod (4).
6. Lock claws (9) for locking and locking the lock locking portion (44) of the first rod (4) when the position of 3) is restricted below the elongated holes (11, 21); A hook guide pin (10) disposed between the left and right wall plates (1, 2) for engaging the rotation guide of the hook (8) and the lock engaging portion (44) and the lock claw (9). A hook device comprising a hook guide pin (10) for maintaining the open state of the opening (82) of the hook (8) when in a mating relationship. 2. The hook device according to claim 1, wherein the lock claw (9) engages with the lock engaging portion (44) by an elastic force of the spring (91). 3. A first rod (4) and a second rod (5,
The hook device according to claim 1, wherein 6) is a force exerted by mutual attraction by a spring (45) which is exaggerated between both members. 4. A hook in which one end is rotatably disposed on an opening side base (81) of the hook (8) and the other end is rotatably attached to a hook guide pin (10). The hook device according to claim 1, which has a rotation guide piece (10A).