JP3036856U - Electric chain block - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To quickly fix the upper end of the wire of the operation switch cable to the chain block body without dropping the bolt (screw) during high-altitude work. SOLUTION: A wire hanging metal fitting H is provided, and this metal fitting H
Is provided with two bolts 21, 22 and a mounting piece 23.
The mounting piece 23 has a curved hook portion 15.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an electric chain block.

[0002]

[Prior art]

 Generally, a push-button switch that operates an electric chain block (electric hoist) is attached to the lower end of a cable (cabtyre cable) with a wire hung from the chain block body.

The wire of this cable is for bearing the force applied to the cable and for preventing the cable from breaking. In order to fix this cable to the chain block body, conventionally, for example, a structure in which the upper annular end of the wire is fixed with a bolt has been used.

[0004]

[Problems to be solved by the device]

 Since the chain block body is installed at a high place, when replacing the above-mentioned operation switch cable (for work at a high place), suddenly drop a small wire fixing bolt etc. Often requires extra time and effort.

The object of the present invention is to prevent small bolts (screws) from falling when exchanging the operation switch cable, and to enable easy and reliable operation in high places. It is in.

[0006]

[Means for Solving the Problems]

 Therefore, in the present invention, in the electric chain block in which the operation switch is attached to the lower end of the cable with wire hung from the chain block body, the wire hanging metal fitting for attaching the wire of the cable to a part of the chain block body is provided. , Has a bolt that is screwed into a screw hole formed in a part of the chain block body, and has a hook for hooking the upper annular end of the wire, and swing it upward by loosening the bolt without removing it. And an attachment piece that is movable to remove the upper annular terminal.

Further, the first and second bolts and a hooking portion for hanging the upper ring-shaped end of the wire are provided in the middle of the left and right, and a through hole into which the first bolt is inserted is provided at one of the left and right ends and an upper end is provided at the other end. The neck of the second bolt has a lower opening-like cutout groove for releasably locking the neck of the second bolt, and by loosening the first and second bolts without removing them, the other end swings upward about the first bolt. And an attachment piece from which the upper annular terminal can be removed.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail based on the illustrated embodiments. In FIG. 1, 1 is a chain block main body, 2 is an upper hook, 3 is a retractable chain bucket 4, and is attached to the lower end of a chain suspended on a load sheave (not shown). It is a lower hook. The chain block body 1 is provided with a center frame 5, left and right side plates 6 and 6, a motor built-in cover 7, and a gear built-in cover 8.

An upper end of the chain block body 1 is fixed so that a cable 9 with a wire (cab tire) is hung from the cover 8 of the chain block body 1. A push button type operation switch 10 is attached to the lower end of the cable 9.

In order to prevent disconnection of the cable 9 when a large tensile force is applied to the cable 9, a wire 11 is attached to the cable 9, and the wire 11 and the cable 9 are connected and fixed at a plurality of points. Become. The wire 11 has an upper ring-shaped terminal 12 and a lower ring-shaped terminal 13, and the lower ring-shaped terminal 13 is connected to the upper end of the operation switch 10 (or the lower end of the cable 9) by a desired fixing metal fitting.

By the way, the important configuration of the present invention is the configuration of the wire suspension metal fitting H for fixing the upper annular end 12 of the wire 11 to the cover 8 of the chain block body 1. That is, in FIG. 2 to FIG. 7, screw holes 14 and 14 are preliminarily formed in the front wall of the gear built-in cover 8 with a small left and right spacing, and the wire suspension fitting H is provided with the screw holes. It is composed of a first bolt 21 and a second bolt 22 which are screwed to 14, 14 and a mounting piece 23 made of a stamped and pressed metal plate.

The attachment piece 23 has a hooking portion 15 for hanging the upper ring-shaped end 12 of the wire 11 in the middle of the left and right, a through hole 16 into which the first bolt 21 is inserted at one of the left and right ends, and the other end. On the side, there is provided a lower opening notch groove portion 17 with which the neck portion of the second bolt 22 is removably engaged.

The hook portion 15 is formed by a curved portion that is curved in an arc shape or a U shape so as to be convex toward the front (when viewed in a plan view), and has a concave groove on the inner surface of the curved portion and the cover. A part of the upper ring-shaped terminal 12 of the wire 11 is inserted into and held in a hole that is formed between the outer surface of the wire 8 and the outer surface of the wire 8 (both in FIG. 3, FIG. 4, and FIG. 7B). reference).

When it is desired to remove the upper ring-shaped terminal 12 of the wire 11, from the (a) of FIG. 5 (FIG. 4) and FIG. 7 to the first (b) and (c) of FIG. 6 and FIG. -By slightly loosening the second bolts 21 and 22 without removing them, a gap 18 slightly larger than the diameter of the wire 11 is formed between the inner surface of the mounting piece 23 and the outer surface of the cover 8, Moreover, when the other end side of the mounting piece 23 is swung upward around (the axis of) the first bolt 21, the upper ring-shaped terminal 12 can be moved as shown by arrow B to be removed easily and quickly. it can.

Therefore, the first and second bolts 21 and 22 have long dimensions so as not to be unintentionally detached from the cover 8 in the states (b) and (c) of FIG. Needless to say, the shape and size of the mounting piece 23 can be freely modified in addition to those shown in the drawings.

Then, in the work of exchanging the cable 9, the upper ring-shaped terminal 12 of the wire 11 is removed and then reattached as described above, as shown in (c) of FIG. 7 and FIG. While swinging upward and leaving the gap 18 formed, the upper ring-shaped terminal 12 is moved opposite to the arrow B and hooked on the hook portion 15, and then the mounting piece 23 is swung downward. Then, the neck portion of the second bolt 22 may be engaged with the notch groove portion 17 and the first and second bolts 21 and 22 may be screwed. Incidentally, other than the gear built-in cover 8, it is also free to attach the wire hanging metal fitting H to the chain block body 1.

[0017]

[Effect of the invention]

 The present invention has the following significant effects with the above configuration.

By simply loosening the bolts 21 and 22 (according to claims 1 and 2), the upper ring-shaped terminal 12 of the wire 11 of the cable 9 can be easily removed and installed, and the bolts 21 and 22 can be easily attached. Since there is no need to worry about dropping the cable from a high place, work such as cable replacement can be performed easily and quickly. Moreover, the upper end of the wire 11 in the attached state is securely held, and there is no concern that it will come off due to external force. (According to claim 2) The shape of the mounting piece 23 is also simple and easy to manufacture at low cost, and the fixing is also reliable.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of a main part.

FIG. 3 is an enlarged perspective view of a main part.

FIG. 4 is an exploded explanatory view.

FIG. 5 is a front view of a main part.

FIG. 6 is a front view for explaining engagement and disengagement.

FIG. 7 is a sectional view for explaining the operation.

[Explanation of symbols]

 1 Chain block body 9 Cable 10 Operation switch 11 Wire 12 Upper ring end 14 Screw hole 15 Hooking part 16 Through hole 17 Notch groove part 21 (1st) bolt 22 (2nd) bolt 23 Mounting piece H Wire hanging bracket

Claims (2)

[Utility model registration claims] 1. An electric chain block in which an operation switch 10 is attached to a lower end of a cable 9 with a wire suspended from a chain block body 1, and a wire 11 of the cable 9 is attached to a part of the chain block body 1. The wire suspension fitting H to be attached has bolts 21 and 22 screwed into screw holes 14 and 14 formed in a part of the chain block body 1 and hook portions 15 to which the upper annular end 12 of the wire 11 is hooked. A mounting piece 23 capable of removing the upper annular terminal 12 by swinging upward by loosening the bolts 21 and 22 without removing them.
An electric chain block characterized by having and. 2. In an electric chain block in which an operation switch 10 is attached to the lower end of a cable 9 with a wire suspended from the chain block body 1, a wire 11 of the cable 9 is attached to a part of the chain block body 1. The wire suspension fitting H to be attached is the first and second bolts 2 screwed into the screw holes 14 formed in a part of the chain block body 1.
1, 22 and a hook portion 15 for hanging the upper end 12 of the wire 11
And the first bolt on the left and right ends.
The second bolt 22 has a through hole 16 through which the 21 is inserted and is provided on the other end side.
Has a lower opening-shaped cutout groove portion 17 in which the neck portion of the first bolt 21 and 22 is detachably locked, and the first and second bolts 21 and 22 are loosened without being removed, and the other end side is swung upward around the first bolt 21. An electric chain block comprising: a mounting piece (23) that can be moved to remove the upper annular terminal (12).