JPS6032059Y2 - Futsuku - Google Patents

Description

[Detailed description of the invention] This invention is a new hook that reliably prevents the wire (wire rope) from coming off, and makes it easy to attach and detach the wire hook. Regarding the provision of

Place wire hooks for lifting equipment such as cranes on hanging hooks.
Recently, according to legal regulations, it has become essential to have a device for preventing wires from coming off their hooks.

However, equipping the hook with such a device to prevent the wire from coming off causes a new problem in that it tends to impede attachment and detachment of the wire from the hook during sling work.

In other words, the structure in which the open side of the hook is closed with a wire-removal prevention metal fitting to prevent the wire from coming off means that the next time you want to automatically and easily remove this wire from the hook, you can use some means to close the wire-removal prevention metal fitting. It is necessary to manually or automatically evacuate the prevention fitting and reopen the closed hook opening side. Therefore, regarding the structure of the wire disconnection prevention fitting and the structure of the hook, If this point is not taken into consideration, there is a great risk that the structure will become complicated and the wire attachment/detachment work becomes complicated.In particular, it is desirable to use a method that is easy for the user to use and is as automatic as possible, and furthermore, the structure of the hook as a whole However, it is required to avoid complication in terms of manufacturing and cost.

The present invention satisfies these requirements, reliably prevents the suspended wire from coming off accidentally, and makes it extremely easy to attach and detach the wire during sling work and other operations. The hook has a curved part on the lower end of the support part on which the wire can be hung, and the hook has a curved part on the lower end of the support part on which the wire can be hung. In order to rotatably support the - of the lever-shaped wire detachment prevention metal fitting, the other end of the metal fitting is provided so as to be resiliently inscribed in the inner surface of the tip of the curved part via a spring, and the supporting column lower than the mounting base is provided. At the point where the central bent part of the approximately U-shaped holding fitting, which is protruded upwardly from the circumferential side of the ring which is slidably and loosely fitted in the ring, is slidably fitted to the outer surface of the wire retaining fitting. be.

The present invention will be described in detail below based on the illustrated embodiments. Fig. 1 is a perspective view of the presser fitting embodiment of the present invention, and Figs. 2 and 3 show the hook embodiment of the present invention when it is closed and opened, respectively. Although the front view is shown, in FIGS. 2 and 3, 1 is a hook, and the hook 1 is an example of an anchor type in the figure, but it is symmetrically located on both sides of the lower end of the support column 2. Curved part 3゜3 where wire (wire rope) a is hung on
are curved, and 3a, 3a indicate the upwardly bent tip portions of the respective curved portions 3, 3.

The hook 1 in the present invention is a pair of curved parts 3, 3 in the illustration.
It is not an anchor type with a
It is also applicable to a type having a curved portion 3 on the side.

The upper end of the support column 2 is rotatably or fixedly supported by a hanging device 4 of a crane or other lifting equipment, like a conventional hook.

Reference numeral 5.5 denotes metal fittings for preventing wires from coming off, which are provided in accordance with the number of curved parts 3, 3 of the hook 1, and the metal fittings 5 are pivotally mounted 7 to a mounting base 6 appropriately fixed above the support column 2. The upper end is rotatably supported by a helical spring 8, etc., which is wound around the illustrated pivot 7, and whose one end is elastically supported on the mounting base 6 side and the other end is elastically supported on the metal fitting 5 side. , metal fittings 5
is applied with a force to expand upward using the pivot 7 as a fulcrum, and when it expands as shown by the arrow P in the figure, the tip 5a of the metal fitting 5 comes into contact with the tip 3a of the curved portion 3, and the curved portion 3
In addition, in the present invention, the wire detachment prevention fitting 5 is provided on the support 2.
A presser metal fitting 9 is provided to restrict opening and closing of.

As shown in the first figure, this presser metal fitting 9 includes a ring 11 that is joined in two halves by a split pin 10, and the two wire detachment prevention metal fittings 5, 5 on the symmetrical circumferential side of this ring 11.
The engaging leg 12 is approximately U-shaped, and both ends of the leg 12 are implanted and fixed in the ring 11, and the engaging leg 12 is fixed to the ring 11 so that the engagement leg 12 has a substantially U shape. Then, fit the ring 11 of the presser metal fitting 9 onto the support column 2 so as to be able to slide up and down, and attach the engaging leg 12 to the central bent portion 12a.
is engaged with the wire detachment prevention fitting 5 in an externally-fitting and holding manner.

Therefore, as shown in the second figure, when the ring 11 of the presser metal fitting 9 is moved upward on the support 2, the wire detachment prevention metal fitting 5 is moved by the spring 8 as indicated by the arrow 8 through the accompanying movement of the engaging leg 12 of the presser metal fitting 9. P, it springs upward using the pivot 7 as a fulcrum, and its tip 5a is elastically engaged with the tip 3a of the curved portion 3 of the hook 1, and the space above the curved portion 3 is closed. , the wire a hung on the curved part 3 is trapped and does not come off the hook 1, and the third
When the presser metal fitting 9 is slid downward as shown in the figure, the engagement leg 12 that descends together with the ring 11 causes the wire detachment prevention metal fitting 5 to move in the direction of arrow P' in the figure against the spring 8 with the pivot 7 as a fulcrum. The upper space of the curved portion 3 is thereby opened, and the upper space of the curved portion 3 is opened.
The wire a can be freely hung and removed.

According to the hook 1 of the present invention, due to the structure of the wire detachment prevention fitting 5 and the presser metal fitting 9 which are installed in combination using the support portion 2, as illustrated in FIGS. 2 and 3, the presser metal fitting 9 can be The wire detachment prevention fitting 5 is moved to the closed position of the curved portion 3 of the hook 1 through vertical sliding on the support portion 2;
It is possible to accurately and easily control the open position.

At this time, when the presser metal fitting 9 is in the closed position as shown in FIG. Even if the wire a oscillates and collides with the wire a inside, the wire detachment prevention fitting 5 will of course not open outward through the retention of the tips 3a and 5a through the spring force, and will not open outward. There is no fear that the wire a will open inward due to the prevention of its descent, and it is possible to very stably and firmly prevent the wire a from coming off or coming off.

Further, the presser metal fitting 9 can be easily lowered even from a position away from the hook 1 with a slight pressing force, and the prevention metal fitting 5
can be reliably rotated downward together via the engaging leg 12, by appropriately selecting the diameter of the concave curved surface supporting the wire a in the curved portion 3, and adjusting the length of the wire detachment prevention fitting 5. By making appropriate selections, it can be rotated without fear of interference with the wire a, and as a result, the unhooking work for slinging the wire a can be done easily, smoothly, quickly and easily. Efficiency and labor savings can be achieved in the wire attachment/detachment work without problems such as lowering the hook too much or the wire a hitting the wire detachment prevention fitting 5 due to the wire's curl, making it difficult to remove.

That is, in the conventional method, as seen in Utility Model Application Publication No. 55-35039, for example, a fixed ring is fixedly mounted on the support of the hook, and a movable ring provided at one end of the metal fitting to prevent the wire from coming off is mounted on the fixed ring. In most cases, the ring is slidably fitted onto the support column, and both the fixed and movable rings are fixed using hooks and pins or fastening bolts. In this case, two people are required: a worker to release the fixing means and operate the metal fitting to hold the prevention metal fitting in the released position, and a wire worker to unhook the wire,
If the diameter of the wire is 50 mm or more, a human worker is required due to the weight and weight.

In contrast, in the present invention, the spring-based prevention fitting 5 can be automatically opened, fixed in position, and placed in the posture by moving the presser fitting 9 above the ring 11, so that only one worker can operate the fitting and wire the wire. You will be able to get the hang of it.

Moreover, since the only necessary operation is to move the ring up and down,
Work efficiency and simplification are definitely possible.

Moreover, the hook 1 of the present invention has a simple structure and easy manufacture, as well as the wire detachment prevention fitting 5 and the holding fitting 9, and can be provided at low cost, and is extremely advantageous in terms of easy operation, making it an excellent new hook.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the presser fitting of the present invention, and FIGS. 2 and 3 are front views showing the hook embodiment of the present invention in an open and closed state. 1... Hook, 2... Pillar, 3...
...Curved portion, 5...Wire disconnection prevention fitting,
6... Mounting base, 7... Axis, butt...
...Spring, 9...Press fitting, 11...
- Ring, 12... Engaging leg, a... Wire (wire rope).

Claims (1)

[Scope of utility model registration request] One end of a lever-shaped wire-removal prevention fitting is rotatably supported on a mounting base fixed to the upper part of the above-mentioned support part of a hook having a curved part on which a wire is hung at the lower end of the support part, and the metal fitting is attached via a spring. A generally U-shaped ring whose other end is provided so as to be elastically inscribed in the inner surface of the tip of the curved portion, and which is erected in an upwardly protruding manner on the circumferential side of a ring that is slidably and loosely fitted to the support section below the mounting base. A hook characterized in that a central bent portion of the presser metal fitting is slidably fitted onto an outer surface of the wire detachment prevention metal fitting.