JP2006273537A - Electric chain block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric chain block with the installing dimensions suppressed, nevertheless assuring easy operation for maintenance. <P>SOLUTION: The electric chain block is equipped with a load sheave 3a for setting a load chain 18 on a rotary support part 3, a deceleration device 5 to transmit thereto the driving force deceleratively, a motor 4 to give the driving force through the deceleration device, an electric equipment box 6 to store control equipment to conduct the regular-reverse rotational control of the motor, and a chain bucket 7 to store the load chain, wherein a winch body 2 is composed of the support part, the motor, and the deceleration device, and in a position a certain distance apart in the direction perpendicularly intersecting the longitudinal direction of the winch body 2, a hanging member 8 to hang down and support the chain bucket is installed with its top tied with a fixation part 1 for hanging down the winch body and the bottom detained with the chain bucket, and the electric equipment box is installed over the chain bucket and beside the hanging member mounting part in the longitudinal direction of the winch body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric chain block, and more particularly, to an electric chain block suitable for installation in an installation place where installation space is limited.

Conventionally, in a hoisting machine such as a chain block, a motor case including a load sheave drive motor is provided on one side of the load sheave, and the driving force from the motor is transmitted to the load sheave on the other side. 2. Description of the Related Art A chain block support device in which a reduction gear mechanism and an electrical component that controls electrical components for controlling the rotation of a motor are provided and a chain bucket is suspended below a load sheave support center is known. (For example, see Patent Document 1)
Next, a conventional chain block described in Patent Document 1 will be described with reference to FIG. In FIG. 5, a block body 23 having a load sheave 24 for hanging a load chain 25 and a drive mechanism for the load sheave 24, and an upper portion of the chain block body 23, the chain block body 23 is suspended. The fixture 21 is detachably fixed to the hanging rod 20 to be lowered. The fixture 21 includes a clamp portion 22a and a mounting shaft 22b extending downward from a base portion of the clamp portion 22a. The chain block main body 23 is attached to the attachment shaft 22 b of 21 via a connecting shaft that is substantially parallel to the axis of the load sheave 24.

The chain block body 23 includes a load sheave 24, a motor 2b, and a gear case / electric case 27, and the motor 26 and the gear case / electric case 27 are substantially symmetrical with respect to the frames 28 and 28 with the load sheave 24 as a center. Further, a chain bucket 29 is suspended from the frames 28, 28 via a suspension chain 30.
Japanese Utility Model Publication No. 6-17832 (see page 2, page 2)

  However, in the conventional electric chain block, as shown in FIG. 5, the electric chain block main body protrudes outward with respect to the outer dimensions of the bucket, and the chain is accommodated in the chain bucket to suppress the longitudinal length of the chain bucket. In taking a large space, the projecting lower portion is a useless space. For this reason, the installation dimension in the vertical direction of the entire electric chain block is increased, and particularly when installed in a limited space, there is a problem that it becomes a major obstacle.

  In addition, since the chain bucket is suspended and supported by the chain block body, when the chain becomes long, for example, about 100 m, the bucket becomes large, and even if the bucket becomes large, the installation size of the entire electric chain block is suppressed. Had a problem that needed.

  Moreover, even an electric chain block with a reduced installation dimension has a problem of facilitating maintenance.

  A support portion that rotationally supports a load sheave around which the load chain is wound, a speed reducer that transmits a driving force to the load sheave at a reduced speed, a motor that applies a driving force to the load sheave via the speed reducer, and forward / reverse rotation of the motor An electrical chain block including an electrical component box for storing control equipment for control and a chain bucket for storing a load chain, and orthogonal to the longitudinal direction of the hoisting machine main body including the support portion, the motor, and the speed reducer The upper end is linked to a fixed part that suspends the hoisting machine main body, the lower end is engaged with the chain bucket, and a suspension member that suspends and supports the chain bucket is provided. It is provided above the bucket and on the side of the hoisting machine attachment side in the longitudinal direction of the hoisting machine main body.

  Further, both ends of the hoisting machine main body in the longitudinal direction are provided so as not to protrude from the chain bucket.

  Further, the electrical component box is a box provided with an opening for taking out the control device at one end, and the suspension member is disposed so as not to overlap in the air direction from the opening of the electrical component box. And

  As described above, the electric chain block of the present invention has the upper end at the location separated by a predetermined distance in the direction perpendicular to the longitudinal direction of the hoisting machine main body comprising the load sheave support part, the motor and the speed reducer. A suspension member linked to the hanging fixing portion is engaged with the lower end of the chain bucket, and a suspension member is provided to suspend and support the chain bucket. The electrical component box is suspended above the chain bucket in the longitudinal direction of the hoisting machine body. Because it is installed in the dead space on the side of the member mounting side, it prevents the hoisting machine main body from becoming vertically long like the conventional device, and solves the problem of increasing the installation space in the longitudinal direction of the hoisting machine main body. This is particularly suitable when the hoisting machine is installed at a place where the installation space is limited.

  In addition, since both ends in the longitudinal direction of the hoisting machine main body are provided so as not to protrude from the chain bucket, the vertical occupation space of the hoisting machine can be further reduced.

  Also, the electrical component box is a box provided with an opening for taking out the control device at one end, and the suspension member is arranged so as not to overlap in the atmospheric direction from the opening of the electrical component box. When the control equipment housed in the electrical component box breaks down and maintenance such as repair or replacement of the control equipment becomes necessary, it does not interfere with the suspension member for hanging and attaching a large chain bucket. Thus, it becomes possible for the operator to easily put his hand from the outside of the electric chain block and perform maintenance work.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view showing the overall configuration of an electric chain block of the present invention, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a right side view of FIG. 1, and FIG. It is a front view which shows the whole structure.

  In the figure, 1 is a support bracket which is a fixing part for suspending a hoisting machine body of the present invention, 2 is an electric chain block hoisting machine body, and a load sheave for winding a load chain as shown in FIG. 3a (not shown) is rotatably supported, the support bracket is fixed to the upper part, and the lower part is a chain guide (not shown) that guides the load side load chain 18a and the no load side load chain 18b (not shown). (Not shown), a support unit 3 having a load sheave 3a, a motor 4 for applying a driving force to the load sheave 3a through a speed reducer 5 described later, and a speed reducer 5 that is a speed reducing device for transmitting the driving force to the load sheave. As shown in FIG. 1, the hoisting machine main body 2 is attached to the support bracket 1 in a horizontal direction and perpendicular to the support bracket 1. As shown in FIG. 3, the hoisting machine main body 2 is provided with a motor 4 on one side of the support portion 3 and a speed reducer 5 on the other side. Reference numeral 6 denotes an electrical component box for storing a control device (such as a power switching control device such as an electromagnetic contact machine) that performs forward / reverse control of the motor, and is separated from the hoisting machine main body 2 so that the length direction of the hoisting machine main body 2 is It is installed above the chain bucket on the attachment side of the side suspension member. The electrical component box 6 is a box provided with an opening for taking out a control device at one end, and the suspension member 8 is disposed so as not to overlap the opening of the electrical component box 6 in the air direction. . 7 is a chain bucket for housing the no-load side chain 18b, and is supported at two points by a suspension member 8 suspended from the other end of the support bracket 1 and a suspension fitting 10 provided at the lower part of the hoisting machine main body 2. The hoisting machine main body 2 is suspended from the suspension center (support bracket 1). The chain bucket 7 is provided so that both ends in the longitudinal direction of the hoisting machine main body do not protrude from the chain bucket 7. Reference numeral 7 a denotes a rectangular frame provided in the upper opening of the bucket 7. Reference numeral 9 is a suspension rod for connecting the suspension member 8 and the frame body 7a of the bucket 7, and 10 is a hanging bracket, which is provided at the lower part of the hoisting machine main body and attached to the lower part of the hoisting machine (not shown). ) And is fastened to the lower part of the hoisting machine main body 2 with a mounting bolt. As shown in FIG. 3, 11 is attached to a hanging metal fitting 10 to suspend the bucket 7, 12 is a rod-like connecting rod attached to the hanging fitting 10, and 13 is suspended from the connecting rod 12. , A ring-shaped connecting tool into which the lifting tool 11 is fitted, 14 is a rib attached to the frame 7a of the bucket 7, 15 is a bolt, and 16 is a mounting hole for mounting the support bracket 1 to a beam such as a trolley or a ceiling. , 18 is a load chain.

  In the electric chain block of the present invention, a hoisting machine main body 2 including a support portion 3, a motor 4 and a speed reducer 5 is installed at one end of the support bracket 1 perpendicularly to the horizontal direction. An opening is directed from the hoisting machine main body 2 in the length direction of the support bracket 1, and is installed on the side of the hoisting machine 8 on the side in the longitudinal direction of the hoisting machine main body. The chain bucket 7 is supported and suspended at two places: a suspension member 8 provided at the other end of the support bracket 1 and a suspension fitting 10 provided at the lower part of the hoisting machine main body 2. Further, as shown in FIGS. 1 to 3, the center (center of gravity) of the chain bucket 7 is offset from the suspension position of the hoisting machine body 2, and both ends in the longitudinal direction of the hoisting machine body 2 are chain buckets. 7 are provided so as to substantially coincide with each other so as not to protrude from the outer dimensions of 7.

  As described above, the hoisting machine main body 2 including the support portion 3, the motor 4, and the speed reducer 5 is provided at one end of the support bracket 1 perpendicular to the horizontal direction, and the electrical component box 6 is provided with the hoisting machine main body 2. The support bracket 1 and the chain bucket are arranged so that the opening is directed to the length direction of the support bracket 1 and is installed on the side of the hoisting machine main body 2 on the side of the suspension member 8. 7 Since the upper part is provided in a dead space on the side of the hoisting machine body 2 on the hoisting member 8 side, the electrical component box 6 protrudes from the electric chain block, and the problem that the installation space is increased can be solved. This makes it possible to further reduce the installation space of the hoisting machine, and is particularly suitable when installing the electric chain block in a limited space.

  Further, since the chain bucket 7 is provided so that both ends in the longitudinal direction of the hoisting machine main body 2 do not protrude, the occupation space in the vertical direction of the electric chain block can be further reduced.

  Further, the electrical component box 6 is a box provided with an opening for taking out the control device at one end, and the suspension member 8 is arranged so as not to overlap the opening of the electrical component box 6 in the air direction. If the control equipment contained in the electrical component box breaks down and maintenance such as repair or replacement of the control equipment becomes necessary, it interferes with the suspension member 8 for hanging and attaching the enlarged chain bucket 7 Therefore, the operator can easily put in his hand from the outside of the electric chain block and perform maintenance work.

  Further, a suspension member 8 is suspended from the other end of the support bracket 1, and the chain bucket 7 is suspended by the suspension member 8 and a suspension fitting 10 provided at the lower portion of the hoisting machine main body 2. Therefore, even a large-capacity bucket can be firmly supported, such as a 100-m chain bucket.

  Further, the center of the chain bucket 7 is offset from the suspension position of the hoisting machine main body 2 and is offset-supported so that the outer dimensions of the hoisting machine main body 2 and the outer dimensions of the chain bucket 7 are substantially matched. The occupied space in the vertical direction of the electric chain block can be further reduced.

  FIG. 4 shows another embodiment of the present invention, in which a suspension member 8a is suspended between the other end of the support bracket 1 and the support bracket 1, and the chain bucket 7 is suspended by the suspension members 8 and 8a. Features. Reference numeral 17 denotes a chain guide provided in the chain bucket 7, which guides the unloaded chain so that it is fed into the center of the bucket and has the function of uniformly storing the chain in the bucket 7. Further, it is possible to reduce the dead space. The chain guide 17 can also be provided in the bucket described in FIGS.

  Further, although the fixing portion has been described as the support bracket 1, the hoisting machine main body 2 and the suspension member 8 are provided directly on a beam provided on the ceiling or the like, or a trolley that travels on a rail provided on the ceiling or the like. In this case, the fixing portion is a beam and the latter is a rail.

  The electric chain block of the present invention is particularly useful as a hoisting machine installed in a limited space such as a main body of a wind power generator because the occupied space is significantly smaller than that of a conventional device.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the whole structure of the electric chain block of Embodiment 1 of this invention. The left view of FIG. The right view of FIG. The front view which shows the whole structure of the electric chain block of Embodiment 2 of this invention. The front view which shows a conventional apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support bracket 2 Hoisting machine main body 3 Support part 3a Load sheave 4 Motor 5 Reduction gear 6 Electrical component box 7 Chain bucket 7a Frame body 8, 8a Hanging member 9 Bucket hanging frame 10 Hanging bracket 11 Hanging tool 12 Connecting rod 13 Connecting tool 14 Rib 15 Bolt 16 Mounting hole 17 Chain guide 18 Load chain

Claims (3)

  A support portion that rotationally supports a load sheave around which the load chain is wound, a speed reducer that transmits a driving force to the load sheave at a reduced speed, a motor that applies a driving force to the load sheave via the speed reducer, and forward / reverse rotation of the motor An electrical chain block including an electrical component box for storing control equipment for control and a chain bucket for storing a load chain, and orthogonal to the longitudinal direction of the hoisting machine main body including the support portion, the motor, and the speed reducer The upper end is linked to a fixed part that suspends the hoisting machine main body, the lower end is engaged with the chain bucket, and a suspension member that suspends and supports the chain bucket is provided. An electric chain block provided on a side of a hoisting machine main body on a side where a hoisting member is attached in a longitudinal direction above a bucket.   The electric chain block according to claim 1, wherein both ends of the hoisting machine main body in the longitudinal direction are provided so as not to protrude from the chain bucket. The electrical component box is a box provided with an opening for taking out the control device at one end, and the suspension member is disposed so as not to overlap in the air direction from the opening of the electrical component box. The electric chain block according to claim 1 or 2.

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