JPH0564180U - Hanging equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lifting device that improves the efficiency of lifting work. [Structure] A pair of spring balancers 6 and 6 are attached to both ends of the balancer arm 3. This spring balancer 6 has a mainspring inside a balancer box 6a, and winds a thin balancer wire 6b by the spring force of the mainspring. Balancer wire 6b
The tip portion 6c of the is hooked on the intermediate portion 4a of the link chain 4. Therefore, the spring balancer 6
Pulls the intermediate portion 4a of the link chain upward by the spring force, and the hook 5 engages with the eyebolt I at the engaging portion 5 thereof.
A contact force is applied to a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hanging device which is attached to a hook of a crane and used when moving a load.

[0002]

[Prior Art]

 In a factory or the like, a hook with a link chain and a small hook may be attached to a large hook of a crane to facilitate lifting of a load (for example, mechanical engineering handbook 16 page 18 sling ( (See FIG. 55)). In this case, first, the small hook is lowered below the eyebolt of the load, and then the operator pulls the link chain upward with the small hook hooked on the eyebolt so as not to loosen the link chain. In this condition, the wire rope of the crane is slowly rolled up, and the operator keeps lifting the link chain slightly until the link chain is stretched to some extent. This prevents tangling of the link chain and catching of the load with the link chain, and also prevents the hook from coming off the eyebolt.

[0003]

[Problems to be solved by the device]

 However, in the above conventional technique, it is necessary for the operator to slightly lift the link chain after hooking the hook on the eyebolt until the link chain is stretched to some extent. Therefore, lifting efficiency is low.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a hoisting tool that improves the efficiency of hoisting work.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention applies a contact force to an engaging portion of the hook with respect to a load by pulling an intermediate portion of a flexible suspension member having a hook attached to a lower end thereof upward by a spring force. Auxiliary tools are provided.

[0006]

[Action]

 According to this invention, when the hook is hooked on a load, the assisting tool pulls the intermediate portion of the flexible suspension member upward by the spring force, so that the flexible suspension member is tangled or the flexible suspension member is loaded. There is no danger of getting caught. In addition, since the assisting device applies a contact force to the hook at the position where the hook engages with the load, there is no risk of the hook coming off the load.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, the suspension 1 has an annular mounting portion 2 on the upper side, which is hooked on a large hook F of a crane (not shown). The hanging tool 1 is, for example, a jig for lifting a mold device (load) W in which an upper and lower mold C and a cylinder S for a slide mold are integrated. Two eyebolts I are fixed to the upper and lower molds C.

In this embodiment, the hanger 1 has left and right symmetry, and a balancer arm 3 is fixed to a lower portion of the mounting portion 2. Below the center of the balancer arm 3, a pair of link chains (flexible suspension members) 4 and 4 are suspended. A hook 5 smaller than the hook F of the above-mentioned claim is attached to the lower end of the link chain 4.

On the other hand, a pair of spring balancers (auxiliary tools) 6 and 6 are attached to both ends of the balancer arm 3. This spring balancer 6 has a mainspring (not shown) in the balancer box 6a, and is a well-known one that winds a thin balancer wire 6b with the spring force of the mainspring. The tip portion 6c of the balancer wire 6b is hooked on the intermediate portion 4a of the link chain 4. Therefore, in the state shown in this figure, the spring balancer 6 pulls the intermediate portion 4a of the link chain upward by the spring force to apply the contact force to the engaging portion 5a of the hook 5 with respect to the eyebolt I.

Next, how to use the above-mentioned hanging tool 1 will be described. First, as shown in FIG. 2A, the hanging tool 1 is lowered by the crane to a position slightly above the mold apparatus (load) W. Then, the operator pulls the hook 5 of the lifting tool 1 downward against the spring force of the spring balancer 6, and passes the hook 5 through the eyebolt I as shown in FIG. After that, when the hook F of the crane is slowly pulled up, the link chain 4 becomes in a tensioned state as shown in FIG. 2 (b), and eventually the mold apparatus (load) W is lifted.

In the state shown in FIG. 1, since the spring balancer 6 applies the abutting force to the engaging portion 5a of the hook 5 with respect to the eyebolt I in the state of FIG. 1, the hook 5 does not have to be lifted by the operator. 5 is engaged with the eyebolt I, and there is no danger that the hook 5 will come off. Further, since the spring balancer 6 pulls the intermediate portion 4a of the link chain 4 upward by the spring force, the link chain 4 is attached to the cylinder S of the mold device (load) W and its piping material (not shown). Less likely to be caught or tangled. As described above, even if the operator does not lift the hook 5, the hook 5 does not come off from the eyebolt I and the link chain 4 is not easily entangled, so that the working efficiency is significantly improved.

Although the spring balancer 6 is used as the auxiliary tool in the above-described embodiment, a rubber band or a coil spring may be used. Further, in the above embodiment, the link chain 4 is used as the flexible hanging member, but a sling such as a wire, a rope or a cloth band may be used instead of the link chain 4.

Further, in the above embodiment, the hook 5 and the spring balancer 6 and the like are provided in two sets in the hanging tool 1, but the hook 5, the spring balancer 6 and the like may be provided in one set or three or more sets. For example, when four sets of hooks 5 and spring balancers 6 are installed, the balancer arm 3 is a “T” -shaped balancer frame, and the spring balancer 6 is provided in the square of the balancer frame, while the four balancer frames are arranged from the center of the balancer frame. Suspend the link chain 4. Further, the balancer arm 3 is not always necessary and can be omitted.

[0014]

[Effect of the device]

 As described above, according to the present invention, the assisting tool pulls the intermediate portion of the flexible suspension member upward by the spring force to apply the abutting force to the engaging portion of the hook, so that the hook is hooked on the load. After that, even if the worker does not pull the hook upwards a little, there is no possibility that the flexible hanging member will be entangled or caught in the load, and that the hook will not come off the load. Therefore, the work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a front view of a suspender showing an embodiment of the present invention.

FIG. 2A and FIG. 2B are front views showing the same method of use.

[Explanation of symbols]

1 ... Hanging tool, 4 ... Link chain (flexible hanging member), 4
a ... intermediate part, 5 ... hook, 5a ... engaging part, 6 ... auxiliary tool, W ... load.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Teranishi 170 Yamanoue, Hiraoka-cho, Kakogawa-shi, Hyogo Inside the Kakogawa Plant, Kawasaki Saki Heavy Industries, Ltd. (72) Kanzo Matsuda 170, Yamanoue, Hiraoka-cho, Kakogawa, Hyogo Prefecture Kawasaki Heavy industry Kakogawa factory

Claims (1)

[Scope of utility model registration request] 1. A hanger in which a hook is attached to a lower end portion of a flexible suspension member, wherein an intermediate portion of the flexible suspension member is pulled upward by a spring force to engage the hook with a load. A hanger provided with an auxiliary tool for applying a contact force to the.