JPH0665379U - Automatic opening type load hanging hook - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an automatic opening type load hanging hook capable of automatically releasing a load after the load is moved. [Structure] The hook 11 is moved from the normal position to the reverse position between the normal position with the abdomen 12b facing upward and the reverse position with the abdomen 12b facing downward, and from the reverse position to the normal position. Is pivotally supported on the frame 2 so as to be pivotable in the direction of the tip 17 and vertically movable between an upper fixed position and a lower free position in the normal position, and hit the hook 11 at the fixed position of the hook 11. A stopper 25 that prevents the hook 11 from turning is provided on the frame 2, and a spring 23 that biases the hook 11 from the normal position to the reverse position and from the lower position to the upper position is provided on the hook 11 and the frame 2 sides. It is a structure provided between the two.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatically opening type load-hanging hook that is attached to a crane or other front end portion when lifting a load and moving the load.

[0002]

[Prior art]

 Generally, there are many types of cranes used for carrying heavy loads, and various types of cranes are installed according to the purpose of use. A hook is usually attached to the tip of the crane or the wire of the hoisting device provided in the crane.

The hook is made of steel or the like and has a hook-shaped curved portion. When the crane lifts a load and carries it, the rope or the like provided on the load is bent. It is used to hang a load by hooking it on the inner abdomen.

[0004]

[Problems to be solved by the device]

 However, according to the conventional hook, since the hook has a hook shape and the tip remains upward, manual work is required not only when the load is hooked on the hook but also when the load is removed from the hook. Is needed. Therefore, if a conventional hook is applied and the load is moved over a long distance, workers are placed at the start point and end point of the load respectively, or the same person starts the move. The load had to be hooked and unhooked either by moving between points and end points.

Therefore, when the two workers are required, the labor cost increases, and when the one worker moves to hook and remove the load, the workers need to work. However, there was a problem that the above-mentioned movement became difficult, especially when there was an obstacle between the starting point and the ending point of the movement. The present invention can solve the above problems, and its purpose is to automatically release a load after carrying the load, thereby realizing good workability and economy. An object is to provide an automatic opening type load hanging hook that can be used.

[0006]

[Means for Solving the Problems]

 The self-opening type load-hanging hook of the present invention is formed by bending a space between a base end and a tip and having a hook having a back part on the outside of the curve and an abdomen on the inside of the curve on which the load is supported by the frame. In the hanging hook, the hook is disposed between the normal position with the abdomen facing upward and the reverse position with the abdomen facing downward, in the direction of the back from the normal position to the reverse position. From the reverse position to the normal position, the frame is pivotally supported in the frame so as to be pivotable in the direction of the tip, and further vertically movable between the upper fixed position and the lower free position in the normal position. A stopper is provided on the frame for hitting the hook to prevent the hook from swinging in the fixed position of the hook, and a spring for biasing the hook from the normal position to the reverse position and from the lower position to the upper position is provided. Between hook and frame side Characterized by providing.

[0007]

[Action]

 According to the self-opening type load-hanging hook of the present invention, the hook is positioned in the upper fixed position by the upward biasing force of the spring provided between the hook and the frame side. At this time, since the hook is locked at the upper fixed position in the normal position by the stopper attached to the frame, the hook does not pivot even by the biasing force of the spring in the pivot direction. In this state, when a load is hooked on the hook and lifted up, the load lowers the hook and moves to the lower free position to release the engagement with the stopper, and the load is supported in this free position.

In this state, when the load is moved to a predetermined position while being suspended, the load on the hook disappears when the load is lowered to the ground or another desired position. At this time, the hook is not engaged by the topper, and only the biasing force of the spring is applied.Therefore, the hook swings backward from the normal position to the reverse position by the spring and automatically releases the load. Therefore, it is not necessary to remove the load from the hook after moving the load.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 are views showing an embodiment of an automatic opening type load hanging hook 1 according to the present invention. In these figures, reference numeral 2 is a frame of the automatic opening type load hanging hook 1. The frame 2 is composed of a first unit 3 and a second unit 4 which are plate-like members that are slightly tapered toward the upper part, and the frame 2 projects horizontally in the upper part. The protrusion 5 is integrally provided, and the spacer 6 is fixed by welding while being sandwiched between the units 3 and 4. Further, through holes 3a, 4a, 6a are formed in the first unit 3, the second unit 4 and the spacer 6, and the through holes 3a, 4a, 6a and the boss portion of the shackle 7 are connected to the bolt 8 and The shackle 7 is fixed to the upper part of the frame 2 by tightening with the nut 9.

On the other hand, a hook 11 is attached to the lower portion of the frame 2 while being sandwiched between the units 3 and 4. The hook 11 is curved and has a back portion 12a on the outside of the curve, an abdomen portion 12b on the inside of the curve for receiving a load, and a hook portion 12c for supporting the load when the load is applied. 12, a base end portion 15 having a locking end portion 13 and a long hole 14 formed in a right angle, a protruding portion 16 protruding outward from a back portion 12a of the hook portion 12, and a tapered shape. It is composed of the tip portion 17. Then, a bolt 18 is inserted into the long hole 14 and the through holes 3b and 4b formed in the units 3 and 4, and is tightly tightened by a nut 19.

Accordingly, the hook 11 has a normal position in which the abdomen 12b faces upward (positions A and B in FIG. 1) and an opposite position in which the abdomen 12b faces downward (position C in FIG. 1). Between the normal position and the reverse position in the direction of the back portion 12a, that is, clockwise in FIG. 1, and from the reverse position to the normal position, in the direction of the tip portion 17, that is, counterclockwise in FIG. Is vertically movably supported between an upper fixed position (position A in FIG. 1) and a lower free position (position B in FIG. 1). Here, the center point of the bolt 18 and the support portion 12c of the hook 11 are displaced by the distance x at the fixed position A as shown in FIG.

In addition, a through hole 5 a is formed in the projecting portion 5 provided on the first unit 3 and the second unit 4 of the frame 2, and a bolt 21 is inserted through the nut 22 to tighten the bolt 21. The bolt 21 and the projection 16 of the hook 11 are provided with tension springs 23 having hooks at both ends, respectively. The through holes 5a are formed in a plurality of places, and the tension of the spring 23 can be adjusted by selecting holes through which the bolts 21 are inserted.

Further, a first stopper 24 and a second stopper 31 are fixed to the frame 2 by welding while being sandwiched between the units 3 and 4. The first stopper 24 prevents contact between a locking portion (stopper) 25 that engages with the locking end portion 13 of the hook 11 in a state where the spring 23 is tensioned, and the base end portion 15 when the hook 11 turns. In order to avoid it, it has a notch 26 that is notched in a substantially semicircular shape, and its thickness is the same as that of the spacer 6, and it also has the hooking function of the hook 11 and the spacer function of the units 3 and 4 simultaneously. It is what On the other hand, the second stopper 31 locks the swing of the hook 11 due to the tension of the spring 23 at this position, and is fixed to the side of the frame 2.

The first stopper 24 is not limited to the above-mentioned configuration as long as it has a locking function of locking the hook 11 in the normal position when the spring 23 is tensioned. It may be a shaft body penetrating the frame 2. The second stopper 31 may be fixed to either the first unit 3 or the second unit 4, or may be formed to have the same thickness as the spacer 6 so as to have a spacer function. May be.

Further, the first unit 3, the second unit 4, and the first stopper 24 are formed with through holes (not shown) penetrating them, and the through holes and the boss portion of the shackle 32 are connected to each other. The shackle 32 is fixed to the lower portion of the frame 2 by tightening the bolt 33 and the nut 34. The shackle 32 may be attached so as to extend horizontally or diagonally as long as it does not hinder the swinging and vertical movement of the hook 11.

Next, an example of use of the automatic opening type load hanging hook 1 having the above-described configuration will be described. In this example of use, we will explain the case where earth and sand are loaded on the so-called mokko, which has ropes for hanging attached to the four corners of a square net made by knitting wire rope, and the operation of dumping this earth and sand is performed. To do. In order to use the self-opening type load-hanging hook 1 of the present invention, first, hook the shackle 7 on the hook provided on the tip of the crane or the wire of the hoisting device equipped on the crane. Attach the hanging hook 1. At this time, the hook 11 tensions the spring 23 and swivels in the direction of the distal end portion 17 to fix the locking end portion 13 to the locking portion 25 of the first stopper 24 at the fixed position shown by the solid line A in FIG. Engage and position. At this time, the locked state is maintained by the biasing force of the spring 23. Then, after the earth and sand are loaded on the moc, ropes at the two adjacent corners of the moc are connected to the shackle 32, and the ropes at the other two corners are hooked on the hook 11 to drive the crane to lift the moc.

When the crane lifts the moc, a load is applied vertically downward to the hook 11, and the hook 11 moves from the upper fixed position to the lower free position along the elongated hole 14 and slightly. At the same time as turning in the direction of the back 12a at an angle corresponding to the distance x, the locking by the locking end 13 of the hook 11 and the locking part 25 of the first stopper 24 is released, and the chain line in FIG. At the free position indicated by B, the load of the moth loaded with earth and sand is supported by the support portion 12c of the hook 11. At this time, the hook 11 is displaced around the bolt 18 as a fulcrum in accordance with the above movement and turning, and the support portion 12c of the hook 11 is horizontally x, up and down before and after the moc is hoisted. It is displaced by y in the direction and is located on the same vertical line as the center point of the bolt 18.

After that, when the mokko is carried, gradually suspended and lowered to the dumping position, the load vertically below which is supported by the hook 11 disappears. At this time, the elasticity of the spring 23 exerts an upward biasing force and a turning biasing force in the direction of the back portion 12a on the hook 11. However, when the mokko is lifted, the support portion 12c of the hook 11 is displaced by x in the horizontal direction and y in the vertical direction and is positioned on the same vertical line as the center point of the cross section of the bolt 18, and at this position, the hook 11 is positioned. Even if the upward biasing force is applied, the locking end portion 13 abuts on the notch portion 26, and the engagement with the locking portion 25 is blocked. As a result, only the turning biasing force acts on the hook 11 in the direction of the back portion 12a of the spring 23 (clockwise in FIG. 1), and the lower semicircle of the slot 14 moves from the normal position to the reverse position along the bolt 18. By turning in the direction of the back 12a, the ropes at the other two corners are automatically opened, and the ropes are locked in place by the second stopper 31 as shown by the chain double-dashed line C in FIG.

When the crane lifts the mokko, the earth and sand are lowered onto the dumping position along with this hoisting, and the ropes at the two adjacent corners of the mokko are hoisted to the crane while being attached to the shackle 32. . This mokko is moved by a crane, the earth and sand are loaded again, and the same work is repeated to dump the earth and sand. In this way, the hook 11 first tensions the spring 23 to engage with the engaging portion 25 of the first stopper 24, and is positioned at the upper fixed position A in the normal position. Is unlocked and moves from the upper fixed position A to the lower free position B and pivots slightly toward the back part 12a, and the hook 11 supports this load. After that, when the mokko is lowered to the dumping position, the load disappears, and the hook 11 is acted on by the upward biasing force and the swing biasing force of the spring 23, but the engagement between the locking end portion 13 and the locking portion 25 is prevented. Therefore, only the turning biasing force of the spring 23 acts on the hook 11. Along with this, the lower half circle of the long hole 14 turns along the bolt 18 from the normal position to the reverse position C in the direction of the back portion 12a, and automatically opens the ropes at the other two corners of the clasp, and Therefore, the mokko is lifted and the earth and sand are dumped. Therefore, it is not necessary to carry out the work of removing the rope after transporting the mokko, dumping the soil and hooking the rope again, which does not require a worker at the dumping site, which makes the work efficient and economical. Can be done on a regular basis.

In the present embodiment, the case where the automatic opening type load-hanging hook 1 is attached to the crane for dumping earth and sand has been described, but the present invention is not limited to this. When used for transporting work or lifting a tetrapot, it is good to hook the rope only on the hook 11 without using the shackle 32. Further, the same effect can be obtained even when the hook 11 is used in the case of supporting a horizontal load.

[0021]

[Effect of device]

 As is clear from the above description, according to the self-opening type load-hanging hook of the present invention, the spring is tensioned so that the hook is locked to the stopper in the normal position, and when the hook is loaded in this state, the hook is locked. The hook moves from the fixed position in the normal position to the free position to support this load, and when this load is removed, the hook is automatically turned from the normal position to the reverse position by the biasing force of the spring. As a result, the load can be automatically released from the hook after it is transported, and thus work efficiency can be improved and the work cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an automatic opening type load hanging hook shown as an embodiment of the present invention.

FIG. 2 is a side view of the same appearance.

FIG. 3 is a front view of the same appearance.

[Explanation of symbols]

 1 Automatic Open Type Lifting Hook 2 Frame 3 First Unit 4 Second Unit 11 Hook 12 Hook 12a Back 12b Abdomen 12c Support 15 Base end 17 Tip 18 Bolt 23 Spring 25 Locking part (stopper)

Claims (1)

[Scope of utility model registration request] 1. A load-hanging hook having a curved portion between a base end and a distal end, the hook having a back portion on the outer side of the curve and an abdomen portion on the inner side of the curve for loading a load, wherein the hook is a hook. , Between the normal position with the abdomen facing upward and the reverse position with the abdomen facing downward, from the normal position to the reverse position in the direction of the back and from the reverse position to the normal position at the tip. Can pivot in each direction, and can pivot up and down between the upper fixed position and the lower free position in the normal position while supporting the frame, and hitting the hook in the fixed position of the hook to prevent the hook from rotating. And a spring for biasing the hook from the normal position to the reverse position and urging the hook from the lower position to the upper position are provided between the hook and the frame side. Automatic opening Hook for hanging loose loads.