JP2003252574A - Hoisting accessory structure of hoist - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hoist to be easily detached from a traverse gear as well as connected to the traverse gear by considering the fact that the work concerning setting and detachment of a hoist such as an electric chain block to/from a traverse gear is difficult and the market's request for making the work easier. <P>SOLUTION: In the structure of the hoisting accessory part, a stopper is disposed to rotate outward so that the hoist can be moved upward/downward. In addition, the hoisting accessory part also has a projection part to interfere when the hoisting accessory is detached and a lock mechanism to lock the hoisting accessory to a hook. Accordingly, the hoist capable of easily performing setting to/detachment from a traverse gear, which is conventionally a difficult work, can be provided. Further, as the hoist can be developed to a lower hook for slinging a heavy material, the work efficiency can be improved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting machine, and more particularly to a hoisting machine structure for a hoisting machine that connects a hoisting machine and a traverse device.

[0002]

2. Description of the Related Art Generally, an electric hoist such as a rope hoist or an electric chain block is equipped with a push button switch suspended from a hoist body via a cable. The rope or chain is rotated, and the rope or the chain is wound up and down by the winding section through the speed reducing section, and the heavy object hung on the lower hook is wound up and down.

When the traverse device is combined, the electric hoisting machine is connected, and similarly, the electric motor is rotated by the command of the push button switch, and the wheels are rotated through the speed reducing portion.

Here, in addition to the above-mentioned electric type, there are a chain motion type in which a loop-shaped chain and a pulley are hoisted by power to perform a traverse operation, and a manual pushing type in which a traverse movement is performed manually. , An electric chain block according to the related art will be described below with reference to the drawings.

FIG. 3 is a structural view of a conventional hanging device, FIG. 4 is an external view of an electric chain block and a traverse device, and FIG. 5 is an explanatory view of mounting the electric chain block according to the conventional system.

The electric chain block includes an upper hook 1 for hanging the main body, an electric chain block main body 2 for hoisting and lowering the chain 4, and a push button switch 3 for issuing a hoisting operation, a hoisting operation, or a traverse operation. , Chain 4, lower hook 5 for hanging heavy objects,
It is composed of a storage device 6 for storing the chain 4, and in particular,
The hanging part includes an upper hook 1, a retaining metal fitting 11, a hook spring 12, a screw 13, and a nut 14.

Further, the traverse device 7 is composed of a drive unit composed of an electric motor or the like, wheels 8, suspension pins 9 for suspending an electric chain block, and the like so that the wheels 8 rotate on the traveling surface of the I-shaped steel 10. ing.

Here, a method of installing the electric chain block and the traverse device will be described.

When the electric chain block is installed in combination with the traversing device, the installation methods are roughly classified into two types. As shown in FIG. 4, after the electric chain block 2 and the traversing device 7 are connected on the floor, they are separated from each other. The method of hoisting the entire equipment by the hoisting device of No. 1 and inserting it from the rail end of the I-shaped steel 10, and as shown in FIG. , Retaining bracket 1
It is a method of installing the traverse device and the hoisting machine in two steps, such as tilting the electric chain block 2 while tilting 1 inward and connecting it to the suspension pin 9 of the traverse device 7, the former generally It is a method used, but it is used particularly for equipment having a relatively large capacity. The latter has a relatively small capacity and is used for lightweight devices.

From the above, with respect to the installation of the electric chain block, the equipment having a relatively small capacity of 1t class or less is mainstream, and the product weight of the electric chain block is also light. Therefore, the latter installation method is adopted, In many cases, it is installed manually.

Also, due to maintenance and the like, I type steel 1
When removing from 0, the procedure is the reverse of the installation method.

[0012] Finally, as for the degree of difficulty of installation and removal work, the former is often a large-scale work, and the latter is difficult to carry out due to many working steps. Even that has become a difficult task.

[0013]

The method for installing and removing the electric chain block on the traverse device is as described above. However, since the work related to the installation and the removal is difficult, "it can be done more easily." The reality is that there are many market needs, such as "Will this happen?"

In view of the above, it is an object of the present invention to provide a hoisting machine which can be easily connected to and removed from a traverse device.

[0015]

[Means for Solving the Problems] Regarding the structure of the hanging part,
Place the retaining metal so that it will roll outward, and
This can be achieved by adding a locking mechanism to the hook and a hook that can move in the vertical direction and that interferes when detaching.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a structural view of a lifting device according to the present invention, FIG. 2 is an operation explanatory view of a lifting device according to the present invention, and FIG. 6 is a structural view of a lifting device according to the present invention (another embodiment).

Reference numeral 1 is an upper hook for suspending an electric chain block, 2 is an electric chain block main body for winding and lowering a chain 4, 3 is a push button switch, 4 is a chain, and 5 is a lower part for suspending heavy objects. hook,
6 is a chain container for storing the wound chain 4, 7 is a traverse device, 8 is a wheel, 9 is a hanging pin for hanging an electric chain block, 10 is an I-shaped steel serving as a traveling rail, 11 is a retaining metal fitting, Reference numeral 12 is a hook spring, 13 is a screw, 14 is a nut, 15 is a spring for a metal fitting pushing spring 16, 16 is a metal fitting pushing spring that pushes up the removal prevention fitting 11 upward, 17 is a pushing up metal fitting that pushes up the removal prevention fitting 11 upward, A Is an inclined portion of the retaining metal fitting 11, B is a protrusion of the retaining metal fitting, C is a groove for locking the upper hook 1, and D is a virtual line (two-dot chain line) where the hanging pin 9 and the retaining metal fitting 11 interfere with each other. .

First, with reference to FIG. 1, the structure of the hanging part will be described.

The retaining metal 11 is arranged by the hook spring 12 so as to act toward the inside of the upper hook 1,
The spring retainer 15 fixed to the upper hook 1 is used as a reference, and the metal fitting pushing spring 16 pushes up the detachment prevention metal fitting 11 and the hook spring 12 via the metal fitting 17. Further, the retaining metal 11 and the hook spring 12 are attached to the through hole (oblong hole) of the hook 1 with a screw 13 and a nut 14.

Next, with reference to FIGS. 2 (I-V), the operation of the suspender when connecting the electric chain block to the traverse device will be described. I. When the electric chain block is lifted so that the upper hook 1 and the retaining metal fitting 11 interfere with the hanging pin 9, the groove portion of the upper hook 1 and the hanging pin 9, the inclined portion A of the retaining metal fitting 11 and the imaginary line D of the hanging pin 9. Contact each other, and a force acts in the direction indicated by the arrow. II. When the electric chain block is further lifted, the suspension pin 9 penetrates into the opening of the upper hook 1 in accordance with the outward opening of the retaining metal fitting 11, and the projection B of the retaining metal fitting 11 and the imaginary line of the hanging pin 9. While D contacts, the metal fitting pushing spring 16 is compressed via the push-up metal fitting 17, and the disengagement prevention metal fitting 11 and the hook spring 12 move downward. III. When the electric chain block is moved in the lateral direction so that the hanging pin 9 enters the upper hook 1, the disengagement prevention metal fitting 11 is closed inward by the action of the hook spring 12 in accordance with this movement. IV. With the retaining metal 11 and the hook spring 12 moving downward, the intrusion into the upper hook 1 of the suspension pin 9 is completed, and the retaining metal 11 stops at the position where it interferes with the upper hook 1. V. When the electric chain block is moved downward in this state, the upper hook 1 is caught in the groove portion of the suspension pin 9, and at the same time, the action of the detachment prevention metal fitting 11 on the protrusion B is canceled, and the metal fitting pushing spring 16 pushes up the metal fitting pushing spring 16. The slip-off preventing metal 11 and the hook spring 12 are pushed upward via 17 to be housed in the locking groove C of the upper hook 1 so that the slip-off preventing effect can be obtained, the connection is completed, and a series of operations can be easily performed.

Although the connecting method has been described above, a series of operations can be easily performed also in the case of detaching, and when the electric chain block is lifted from the connected state (FIG. 2-V), the suspension pin 9 is lifted. The virtual line D pushes down the protrusion B of the retaining metal fitting 11 to release the lock mechanism (Fig. 2-IV) and move the electric chain block laterally (Fig. 2-III, II) to move the electric chain block. Removal is completed by moving downward (Fig. 2-I).

FIG. 6 shows another embodiment of the suspension structure according to the present invention. In the normal use method, there is no particular problem and the same effect as described above can be obtained.
Under vibrations and shocks during operation, and extremely slanted suspension (prohibited operation) that causes the electric chain block to tilt, safety issues remain.

[0024]

As described above, according to the present invention, the retaining metal is arranged so as to be rotated outward and is movable in the vertical direction, and further, the protrusion that interferes with the removal is provided. By adding a lock mechanism to the hook, it is possible to provide a hoist that can easily install and remove the hoist, which has been a difficult task in the past, to the traverse device. is there.

Further, the present invention can be applied to a lower hook for suspending a heavy object, though it depends on a work to be used (a lifting tool such as a wire rope used for hoisting a heavy object), thereby improving work efficiency. It helps.

[Brief description of drawings]

FIG. 1 is a structural diagram of a hanger according to the present invention.

FIG. 2 is a diagram for explaining the operation of the suspension unit according to the present invention.

FIG. 3 is a structural diagram of a suspender according to a conventional method.

FIG. 4 is an external view of an electric chain block and a traverse device.

FIG. 5 is an explanatory view of attaching an electric chain block according to a conventional method.

FIG. 6 is a structural diagram of a hanger according to the present invention (another embodiment).

[Explanation of symbols]

1 ... Upper hook, 2 ... Electric chain block body, 3 ... Push button switch, 4 ... Chain, 5 ... Lower hook, 6 ... Chain storage, 7 ... Traverse device, 8 ... Wheel, 9 ... Suspension pin,
10 ... I-shaped steel, 11 ... Detachment metal fittings, 12 ... Hook spring, 13 ... Screw, 14 nut, 15 ... Spring retainer, 16
… Metal fitting push spring, 17… Push up fitting, A… Inclined part, B
... protrusion, C ... lock groove, D ... imaginary line (two-dot chain line).

Claims (3)

[Claims] 1. A hoist structure for an electric hoist connected to a traverse device in an electric hoist for hoisting and lowering a heavy object. When doing
A hoisting machine lifting device structure characterized in that a rotation angle direction of a retaining metal fitting is set to an outer side by interference with a hanging pin fixed to a traverse device. 2. In the above-mentioned claim 1, the slip-off preventing metal can be moved in the vertical direction by the expansion and contraction action of a spring or the like, and the slip-off preventing metal is inserted into a locking groove provided in the hook to prevent the slip-off. A hoist structure for hoisting machines. 3. The protrusion according to claim 2, wherein the retaining metal is compressed by the spring and moves downward due to interference with a suspension pin fixed to the traverse device to release the retaining mechanism. A hoisting tool structure for a hoisting machine, comprising: