JP6313998B2 - Electric chain block - Google Patents

Description

  The present invention relates to an electric chain block.

  As background art of this technical field, there is JP-A-10-81494 (Patent Document 1). In this publication, “a chain bucket suspended from an electric chain block and accommodating a no-load side chain is divided into a plurality of small chambers by a partition wall extending vertically in the chain accommodating chamber of the chain bucket for one chain, Alternatively, a plurality of chain separation pillars extending in the vertical direction are arranged at intervals from each other, that is, the chain is hardly moved because it is fed into each small small chamber in the chain housing chamber, It is possible to prevent the chains from being intertwined in the chain bucket. "

Japanese Patent Laid-Open No. 10-81494

  When the load chain is stored in the chain bucket, the load chains are stored so as to overlap each other. At this time, the load chain is often intertwined.

  In the technique disclosed in Patent Literature 1, the chain bucket is divided so that the space in which the load chain is stored is narrowed and stored so that the load chain is not moved so that the load chain is not entangled.

  However, there is a possibility that the load chain is not evenly stored in each divided space. In such a case, the load chain is accumulated in one place, and the load chain may be entangled.

  In addition, the load chain is not only tangled, but the load chain may be tied and cannot be solved.

  If the load chain is entangled and unwound up to the load chain entrance of the electric chain block, it will be caught in the entrance of the main body and the electric chain block cannot be operated any more.

  In recent years, electric chain blocks have been increasingly operated automatically in production lines. Stopping the operation of the electric chain block as described above leads to a very big problem of stopping the production line.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, to suppress the entanglement and knotting of the load chain in the chain bucket and to improve the operation stability of the electric chain block.

The present application includes a plurality of means for solving the above-mentioned problems. For example, an electric chain block for raising and lowering a suspended load, the load chain having a load hook for hooking the load, and the load chain are accommodated. A chain bucket, and on the inside of the chain bucket, a first partition plate attached to a first side that constitutes the chain bucket, and a first side of the chain bucket that constitutes the chain bucket A second partition plate mounted at a different height from the first partition plate on the second side surface facing the first partition plate, the first partition plate extending in the direction in which the second side surface is provided And attached to the bottom of the chain bucket with an inclination, and the second partition plate extends in the direction in which the first side surface is provided. And is attached with an inclination toward the bottom side of the chain bucket, and the distance between the first side surface and the second side surface facing each other is set to the inner length of the chain bucket, the first side surface or the second side surface. When the width of the upper surface end of the chain bucket is the width inside the chain bucket, the first partition plate and the second partition plate are more than half the length inside the chain bucket, and the inside of the chain bucket It is characterized in that it is shorter than the width of.

  ADVANTAGE OF THE INVENTION According to this invention, the electric chain block which improves operation | movement stability can be provided.

1 is a front view illustrating a configuration of an electric chain block main body according to an embodiment of the present invention. 1 is a side view illustrating a configuration of an electric chain block main body according to an embodiment of the present invention. FIG. 4 is a front view illustrating a terminal of a load chain on the no load side according to the embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view and a side view which illustrated the container which attached the partition plate concerning embodiment of this invention. FIG. 10 is a cross-sectional view illustrating the operation of the load chain and the partition plate during storage according to the embodiment of the present invention. FIG. 10 is a cross-sectional view illustrating the operation of the load chain and the partition plate during feeding according to the embodiment of the present invention.

  Hereinafter, examples will be described with reference to the drawings. In addition, this invention is not limited to a following example.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 is a front view illustrating the configuration of an electric chain block main body, FIG. 2 is a side view illustrating the configuration of an electric chain block main body, FIG. 3 is a front view illustrating an end of a load chain on the no-load side, and FIG. FIG. 5 is a cross-sectional view illustrating the operation of the load chain and the partition plate during storage, and FIG. 6 illustrates the operation of the load chain and the partition plate during unwinding. FIG.

  Based on FIGS. 1-3, the whole structure and operation | movement principle of an electric chain block are demonstrated. First, the overall configuration will be described. The electric chain block 100 includes an electric motor 1, a speed reducer 2, an electromagnetic brake 3, an upper lifting tool 4, a push button switch 5, a chain bucket 6, a sprocket 7, a load block 8, a load chain 9, and a stopper 10.

  The electric chain block 100 is attached with an upper hanging tool 4 for suspending and installing the electric chain block 100. An electric motor 1 is attached to the electric chain block 100, and a speed reduction unit 2 for reducing the rotation generated in the electric motor 1 is connected to the electric motor 1, and the number of rotations reduced by the speed reduction unit 2 is determined by the sprocket. 7 is transmitted. An electromagnetic brake 3 for stopping the rotation generated in the electric motor 1 is attached to the speed reduction unit 2 on the opposite side of the electric motor 1.

  A load chain 9 is stretched over the sprocket 7, and a load block 8 is attached to one end of the load chain 9. A stopper 10 is attached to the other end. A chain bucket 6 is suspended from the electric chain block body 100, and the stopper 10 side of the load chain 9 is accommodated in the chain bucket 6.

  Next, the operation principle will be described. When the operation button of the push button 5 is pressed, the electric motor 1 is energized. At the same time, the electromagnetic brake 3 is also energized, the electromagnetic brake 3 is released, and the electric motor 1 starts rotating. The rotational power of the electric motor 1 is decelerated to a predetermined rotational speed by the speed reducer 2, and the rotation is transmitted to the load chain 9 by the sprocket 7 connected to the final reduction stage, and the load block 8 is wound and wound via the load chain 9. Lowers, lifts and lowers the suspended load.

  At that time, the load chain 9 is stored in the chain bucket 6 attached to the main body of the electric chain block 100 when the load chain 9 opposite to the load block 8 is wound, and is discharged when the load is lowered. . A stopper 10 is attached to the end of the load chain 9 on the non-load side so that the load chain 9 does not fall out of the electric chain block 100 main body.

  The structure of the chain bucket of the load chain and the load chain storing operation in this embodiment will be described with reference to FIGS. As shown in FIG. 4, a plurality of partition plates 21 attached to the inner side surface of the chain bucket 6 so as to be inclined toward the bottom surface side of the chain bucket are provided. The partition plates 21 are alternately provided on opposite side surfaces in the chain bucket 6, and the partition plates 21 and the inner surface are attached by hinges 22. The hinge 22 fixes the upper surface end of the partition plate 21, and the partition plate 21 is movable from the fixed position when the hinge 22 is open toward the opening side of the chain bucket 6.

  Each of the partition plates 21 has a width shorter than the inner width 32 of the chain bucket 6 and has a length more than half of the inner length 31 of the chain bucket 6 in the direction perpendicular thereto, and faces toward the bottom surface of the chain bucket 6. Are installed at approximately equal intervals. Further, each of the partition plates 21 has a semi-circular cut on the opening side at the tip end opposite to the side on which the hinge 22 is attached and having a radius larger than a circle formed by rotating the load chain 9 once in an axial shape. In.

  The storing operation of the load chain in the chain bucket will be described with reference to FIG. As shown in FIG. 5, when the load chain 9 is stored in the chain bucket 6 by the hoisting operation, first, the load chain 9 comes into contact with the partition plate 21a, and the load chain 9 is stored along the partition plate 21a. Since the partition plate 21 is provided with a semicircular cut having a radius larger than a circle formed by rotating the load chain 9 once in a shaft shape, the load chain 9 is accommodated along the cut. .

  When the stopper 10 attached to the link at the end of the load chain 9 on the no load side passes through the partition plate 21a, the load chain 9 next contacts the partition plate 21b, and the load chain 9 is stored along the partition plate 21b. Is done.

  The load chain 9 repeats the above operation, and the load chain 9 stored to the bottom inside the chain bucket 6 starts to accumulate along the bottom inside the chain bucket 6 between the bottom inside the chain bucket 6 and the partition plate 21c.

  When the load chain 9 fills the space between the bottom inside the chain bucket 6 and the partition plate 21c, the load chain 9 starts to accumulate along the partition plate 21c between the partition plate 21c and the partition plate 21b. When the load chain 9 fills the space between the partition plate 21c and the partition plate 21b, the load chain 9 starts to accumulate between the partition plate 21b and the partition plate 21a.

  When the load chain 9 repeats the above operation, the load chain 9 can be uniformly stored in a space defined by the partition plate 21 in the chain bucket 6.

  Next, the operation of discharging the load chain from the chain bucket will be described with reference to FIG. As shown in FIG. 6, when the load chain 9 is discharged, the load chain 9 housed in the upper part of the partition plate 21a is first wound in the lowering direction.

  When all the load chains 9 stored on the upper part of the partition plate 21a are wound, the load chain 9 stored between the partition plate 21a and the partition plate 21b starts to be wound. At that time, since all the partition plates 21 are attached by hinges 22 at the end of the opening-side surface of the chain bucket 6, the partition plates 21 rise up in accordance with the operation of winding the load chain 9. As a result, the load chain 9 is wound up without being caught by the partition plate 21.

  When the load chain 9 stored between the partition plate 21a and the partition plate 21b is all wound up, the load chain 9 stored between the partition plate 21b and the partition plate 21c starts to be wound up. At this time, the partition plate 21 rises as described above, and further, the partition plate 21a always rises so as to be held by the load chain 9 while the load chain is being wound up. It is wound up without being caught by.

  When all the load chains 9 stored between the partition plate 21b and the partition plate 21c are wound up, the load chain 9 stored between the partition plate 21c and the bottom inside the chain bucket 6 is then wound up. start. At this time, the partition plate 21c rises as described above, and the partition plates 21a and 21b are always raised so as to be held by the load chain 9 while the load chain 9 is being wound. Is wound up without being caught by the partition plate 21.

  When all the load chains 9 are wound in the lowering direction, the partition plate 21 that has been pressed by the load chain 9 returns to the initial state before the load chain 9 is stored by its own weight.

  As a result, the load chain can repeatedly perform the storing operation and the winding operation in the lowering direction, and the load chain 9 can be uniformly stored in the chain bucket 6 at all times.

  From the above, according to this embodiment, it is possible to provide an electric chain block that suppresses the entanglement and knotting of the load chain in the chain bucket and improves the operational stability.

  In addition, although the example in the case where the number of the partition plates 21 is three was shown in the said Example, how many pieces may be attached according to the size of the chain bucket 9.

100 ... Electric chain block 1 ... Electric motor 2 ... Decelerator
3 ... Electromagnetic brake
4 ... Uplift
5 ... push button switch 6 ... chain bucket 7 ... sprocket 8 ... load block 9 ... load chain 10 ... stopper 21 ... partition plate 22 ... hinge 31 ... chain bucket inner length 32 ... chain bucket inner width

Claims (5)

An electric chain block that raises and lowers suspended loads,
A load chain with a load hook for hooking luggage,
A chain bucket in which the load chain is stored,
On the inner side of the chain bucket , a first partition plate attached to a first side surface constituting the chain bucket, and a second part constituting the chain bucket and facing the first side surface of the chain bucket A second partition plate attached to the side surface of the first partition plate at a different height from the first partition plate,
The first partition plate is attached with an inclination so as to extend in the direction in which the second side surface is provided and toward the bottom surface side of the chain bucket,
The second partition plate is attached with an inclination so as to extend in the direction in which the first side surface is provided and toward the bottom surface side of the chain bucket,
The distance between the first side surface and the second side surface facing each other is the length inside the chain bucket, and the width of the upper end portion of the first side surface or the second side surface is the width inside the chain bucket. If
The first partition plate and the second partition plate have a length that is half or more of the inner length of the chain bucket and shorter than the inner width of the chain bucket. Electric chain block. The electrical chain block according to claim 1,
An electric chain block characterized in that an end of the surface on the chain bucket opening side of the partition plate and an inner wall of the chain bucket are fixed with a hinge. The electric chain block according to claim 2,
The electric chain block, wherein the partition plate is attached with an inclination toward the bottom side of the chain bucket. The electric chain block according to claim 2 or 3,
An electric chain block having a cut at an end of the partition plate opposite to the chain bucket mounting side. The electric chain block according to claim 4,
The electric chain block is characterized in that the notch formed in the partition plate has an arc shape, and the arc shape has a radius larger than a circle formed by rotating the load chain once in an axial shape.

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