JPS58183597A - Electric hoist - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electric research hoist, and in particular to an improvement in a support mechanism for a wire rope end.

It has this kind of support mechanism which is conventionally generally known.
The electric hoist will be explained according to FIGS. 1 and 2. In the figure, 1 is a frame formed of a steel plate, la and lb are a pair of connecting plates provided opposite to each other at both ends of the frame 1 in the longitudinal direction, and a center portion t has a U through hole. 1c is provided. 1d is a connecting member formed in a substantially arc shape with both ends welded to the inner end surfaces of the pair of connecting plates 1a and lb, and 1e is a connecting member formed in the upper part of the pair of connecting plates 1a and lb, respectively. A pair of connecting members 1f are welded to the inner end surface of the protrusion and the outer circumferential surface of the connecting member 1d', and 1f is a pair of through holes provided opposite to each other. It is a hole. In addition, on the outer surface of each of the pair of coupling members 1e, both ends t of a pair of double-threaded bolts passing through each pair of through holes 1f are fitted, and 1 is fitted with a washer to be screwed together. A pair of side plates (not shown) are connected by a pair of side plates (none of which are shown). Further, the pair of coupling plates 1a and 1be are coupled to a hoisting electric motor and a speed reduction device (none of which are shown), respectively. Further, a winding drum (not shown) connected to the speed reducer 1 is surrounded by the inner end surfaces of the pair of coupling plates la and lb and the inner peripheral surface of the coupling member 1d, respectively, with a predetermined gap therebetween. ).

Reference numeral 2 denotes a support member made of round steel, which is disposed approximately parallel to the longitudinal axis of the frame 1, and whose both ends are welded to the inner end surfaces of the pair of coupling plates 1a and lb. I'll do it. Reference numeral 3 designates a pair of suspension members, each having a through hole 3a provided at one end thereof, which is rotatably fitted into the support member 2 with a loose fit. Reference numeral 3b denotes a through hole provided on the other end side of the pair of hanging members 3, which are disposed on the same axis. 4 is a support shaft whose both ends are fitted into the respective through holes 3b; 5-
is a through hole provided with a wire row (not shown)
is loosely fitted into the central part of the support shaft 4, and the winding drum (one end of which is supported and wound around) is inserted into a bottomed hole (not shown) provided at the other end. The other end of the wire lobe 6 that suspends a hook block (not shown) is connected to the wire lobes 6.

゛Since this kind of support mechanism of the conventional electric hoist is constructed as described above, two suspension members 3 and a support shaft 4 are used.
, and a wire rope end connecting member 5, the structure is complicated due to the large number of parts and has the drawbacks of high cost.

In addition, since the connection between one end of the wire lobe 6 and the wire rope end connection member 5- is done using an alloy fastener, the work requires skill (3).The connection process requires a long time, which also increases the cost. It had some drawbacks.

The present invention has been made in an attempt to eliminate such drawbacks, and one embodiment of the present invention will be described in detail with reference to FIGS. 8 and 4. In FIG. t, reference numeral 3 denotes a suspension member formed in a substantially U-shape, and a pair of through holes 8a provided at one end opening side are rotatably fitted into the support member 2. 8
0 is a through hole provided approximately at the center of the other end of the suspension member 8, and 6a is a wire lobe 6 formed such that it passes through the opening hole 8C and does not come off from the suspension member 3. This is one end. The rest of the configuration is the same as that of a conventional electric hoist, so a description thereof will be omitted. With this structure, not only the number of hanging members 8 is reduced to one, but also the support shaft 4 and the wire rope end coupling member 5 are no longer required, so the number of parts is reduced and the manufacturing cost of the electric hoist is reduced. Becomes cheaper.

Next, another embodiment of the present invention will be explained with reference to FIG. In the figure, reference numeral 7 denotes one movement regulating member made of a cylindrical member which is loosely fitted into the support member 2 and has both end surfaces connected to one end surface of the suspension member 8 (4) and the inner end surface of the plywood 1b, respectively; is the other movement restricting member made of a cylindrical member which is loosely fitted into the support member 2e and whose both end surfaces abut the other end surface of the suspension member 3 and the inner end surface of the coupling plate 1a, which prevents the movement of the one of the members. It constitutes a movement regulating means that cooperates with the wound member 7 to regulate the movement of the suspension member 8 in the axial direction.Other configurations are the same as those of the above embodiment, so description thereof will be omitted. . With this structure, the hanging member 3 is held at a predetermined position on the supporting member 2, so that the hanging member 3 is prevented from sliding in the axial direction of the supporting member 2. Wear and damage to the hanging member 8 and the supporting member 2 is reduced. Furthermore, for example, when the load acting on the support member 2 is constant, the maximum bending moment acting on the support member 2 is constant because the point of application of the load acting on the support member 2 remains constant. Economical design can be achieved as long as the support member has a section modulus corresponding to . In addition, in this example, a pair of transfer □
Although the movement restriction members 7 and 8 have been described above to restrict the movement of the suspension member 8 in the axial direction, the present invention is not limited to this embodiment. The movement regulating means may include a cylindrical movement regulating member that forms a stepped portion that comes into contact with the end surface and has one end surface that comes into contact with the other end surface of the hanging member 3.

As explained above, the present invention includes a substantially U-shaped hanging member whose one end opening side is rotatably fitted to the outer circumferential surface of the support member, and whose other end supports one end of the wire lobe. Since the support mechanism is provided at the end of the wire lobe, the number of parts of the support mechanism is greatly reduced, and an inexpensive electric hoist can be provided. In addition, a means for restricting the movement of the hanging member in the axial direction is provided, resulting in a high level of safety and reliability.
There is an effect that an electric hoist can provide.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a support mechanism for the wire lobe end of a conventional electric hoist, Fig. 2 is a partial side view of Fig. 1, and Fig. 3 is a partial front view showing an embodiment of the present invention. Figure 4 is the third
Figure 5 is a side view, and Figure 5 is a partial front view showing another embodiment of the present invention. In the figure, 1 is a frame, 2 is a support member, 8 is a hanging member, 6 is a wire lobe m6a, one end of the wire lobe, and 7.8 is a movement regulating member. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1 Figure 7-68: Figure 1 Figure 1 12 Figure f

Claims (1)

[Scope of Claims] (1) A frame made of a steel plate that substantially surrounds the outer circumferential surface of the winding drum with a predetermined gap, the longitudinal axis 1 of this frame is substantially parallel to e.
A supporting member having a circular outer periphery is disposed and connected to the frame body, and one end of the supporting member is rotatably fitted on the outer peripheral surface of the supporting member, and one end of a wire lobe is fitted on the other end thereof. An electric hoist comprising a supporting member having a substantially U-shape. (2) A frame made of a steel plate that substantially surrounds the outer circumferential surface of the winding drum through a predetermined gap, and is arranged approximately parallel to the longitudinal axis of this frame and is connected to the frame. A support member having a circular outer circumference, a substantially U-shaped hanging member whose one end is rotatably fitted on the outer circumferential surface of the support member, and which supports one end of a wire rope at the other end; An electric hoist comprising a regulating means for regulating movement of a hanging member in the axial direction. (8) The movement restricting means is a pair of cylindrical members that are respectively fitted into the support members and whose one end surfaces abut against both end surfaces e of the suspension member.
The movement regulating means of the electric hoist (4) described in Section 1 is fitted with a stepped portion provided on the support member and abutting one end surface of the suspension member, and the one end portion is fitted with the other end surface of the suspension member. 3. The electric hoist according to claim 2, wherein the electric hoist comprises a cylindrical member that comes into contact with a cylindrical member.