JP3276595B2 - Chain block hook steady rest device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steady rest device for a chain block having an upper hook.

[0002]

2. Description of the Related Art Conventionally, a chain block provided with an upper hook has a structure in which a lower end portion of an upper hook is mounted on an upper portion of a chain block main body by a mounting shaft. However, in the above-described chain block, the chain block main body rotates around the connecting shaft at the time of lifting operation of the chain block or the like, and depending on the material of the connecting shaft mounting hole of the chain block main body, for example, aluminum die casting. In the case of the above, there is a problem that it is worn.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a chain block main body and an upper hook are supported by a connecting shaft. By adopting a configuration for restricting the rotation, it is possible to prevent the occurrence of run-out occurring between the connecting shaft, the chain block main body, and the connecting shaft in the lifting operation of the chain block or the like.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a chain block having an upper hook connected thereto, which is provided on an upper surface of the chain block main body above a connecting shaft connecting the chain block main body and the upper hook. A steady rest shaft fitted in the groove portion and inserted into the upper hook.

According to the present invention, the chain block is supported on the upper hook by two axes of the upper hook connecting shaft and the steady rest shaft provided above the connecting shaft, and the steady rest shaft is located on the upper surface of the chain block main body. Since the position is fixed, the chain block body can be prevented from rotating about the connection shaft, and the occurrence of run-out during lifting and the like of the chain block can be reduced. Can,
Further, the occurrence of wear of the chain block main body can be prevented.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 of the present application is
Winding motors on each side of the chain block body
And a gear case, and the upper hook is a chain block
In the chain block connected to the main body, a run- out that extends from the chain block main body to the gear case side , fits into a groove provided on the upper surface of the chain block main body above a connection shaft that connects the upper hook, and is inserted through the upper hook. A chain block hook steady rest device provided with a stopper shaft. In the conventional chain block, the chain block pivots around the connecting shaft, causing runout. The upper hook and the chain block are fitted in the groove of the chain block, the position is fixed, and a steady rest shaft is inserted through the upper hook.The upper hook and the chain block are supported by the connecting shaft, and the swing is prevented by the steady rest shaft. Because of the restriction configuration, run-out can be prevented between the upper hook and the chain block, and the lifting operation of the chain block can be performed safely. Further, an effect that the occurrence of wear of the chain block body due to friction of the connecting shaft and the chain block can be prevented.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In the figure, reference numeral 1 denotes a chain block main body, and a winding motor 2
And a gear case 3 are fixedly provided. Reference numeral 4 denotes a cover of the electrical component storage room disposed outside the gear case 3. Reference numeral 5 denotes an upper hook whose body 14 is connected to the chain block main body 1 via a connection shaft 9. 6 is a lower hook, 7 is a chain bucket, and 8 is a chain. Reference numeral 10 denotes a member for preventing rotation of the connecting shaft 9, and reference numeral 11 denotes an O-ring for waterproofing. Reference numeral 12 denotes a steadying pin which is provided above the upper hook connecting shaft 9 and prevents rotation generated between the upper hook 5 and the chain block body 1.
The steady rest pin 12 is fitted into a groove 13 provided on the upper surface of the chain block main body 1, and is inserted through the upper hook 5.

Accordingly, the chain block 1 and the upper hook 5 are supported by the connecting shaft 9 and are supported by the rotation preventing pin 12 with their rotation restricted. Therefore, for example, the chain block 1 and the upper hook 5 rotate between the chain block 1 and the connecting shaft 9. Even if a force is applied, rotation between the two is restricted by the steadying pin 12, and it is possible to prevent the occurrence of runout during the operation of the chain block 1.

When the chain block is connected to a trolley or the like and used, a connecting fitting for connecting the chain block and the trolley may be used instead of the upper hook. Similar effects can be obtained.

[0010]

According to the present invention, as described above, the steady rest shaft is provided above the connecting shaft connecting the chain block main body and the upper hook. It is possible to prevent the occurrence of runout occurring between them, and to prevent the wear of the chain block main body due to the friction generated between the chain block and the connecting shaft.

[Brief description of the drawings]

FIG. 1 is a front view of a chain block according to the present invention.

FIG. 2 is a side view of the chain block of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain block main body 2 Motor 3 Gear case 4 Cover 5 Upper hook 6 Lower hook 7 Chain bucket 8 Chain 9 Connecting shaft 10 Detent member 11 O ring 12 Swing pin 13 Groove 14 Body

Claims (1)

(57) [Claims] 1. The left and right sides of a chain block body, respectively.
A motor and gear case for winding provided on the hook switch
In the chain block connected to the chain block body, the chain block extends from the chain block body to the gear case side.
Is, above the connecting shaft for connecting the upper hook fits into the groove provided in the chain block body upper surface, the deflection of the chain lock hook, characterized in that a stop shaft deflection which is inserted through the upper hooked device .