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traction machine

A traction machine and pillar technology, which is applied in the direction of the spring mechanism, hoisting device, transportation and packaging, etc., can solve the problems of large size and weight of the traction machine.

Active Publication Date: 2020-03-10
MEIDENSHA ELECTRIC MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In particular, high-speed and large-capacity traction machines are large in size and weight, and the size and weight of parts to be replaced and equipment required may exceed the limit of the size and weight that the elevator can carry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] refer to Figure 1 ~ Figure 3 , the hoisting machine 1 according to Embodiment 1 of the present invention will be described in the order of assembly. in addition, figure 1 is a partial cutaway front view, figure 2 is the right view, image 3 is the left view.

[0106] The drive sheave 2 of the hoisting machine 1 has a through hole 2 a penetrating in the axial direction at a radially central portion thereof. One end portion (right end portion) of the through hole 2a serves as a hub portion 2b, and the other end portion (left end portion) of the through hole 2a serves as a hub portion 2c. That is, the inner diameters of the hub portions 2b, 2c formed at both end portions of the through hole 2a are larger than the inner diameter of the axially central portion of the through hole 2a.

[0107] On the outer peripheral surface of the driving sheave 2, a winding groove 2d for winding the main rope is formed.

[0108] The bearing 3 is arranged on the hub portion 2b, and t...

Embodiment 2

[0142] In the second embodiment, a jig used for disassembling and assembling the hoisting machine 1 according to the first embodiment described above, and a method of disassembling and assembling are described.

[0143] Disassembly and assembly of traction machine 1 will use manual jack 30 (refer to Figure 4 ), pull out fixture 40 (refer to Figure 4 ) and strut guide 50 (see Figure 10 , Figure 11 ).

[0144] Manual jack 30 comprises jack seat 31, jack main body 32 and jack bolt 33 (referring to Figure 4 ).

[0145] The jack stand 31 is a flat member, and the jack main body 32 is arranged on the jack stand 31 . The jack main body 32 has a threaded hole 32a, and when the jack main body 32 is arranged on the jack stand 31, the threaded hole 32a is in a state of penetrating in the vertical direction (vertical direction). The jack bolt 33 is screwed into the threaded hole 32a from the upper side of the jack main body 32 toward the lower side. When the jack bolt 33 is fu...

Embodiment 3

[0193] In Example 3, a method of disassembling and assembling the hoisting machine 1 of the above-mentioned Example 1 in a procedure different from that in Example 2 will be described. Embodiment 3 is basically the same as Embodiment 2, but when the hoisting machine 1 is disassembled and assembled, the rotor 11 and the motor bracket 17 having the stator 18 are kept integral.

[0194] The order of decomposition is explained here. In addition, since the order of assembly and disassembly are reversed, description thereof will be omitted.

[0195] like Figure 13A , Figure 13B As shown, a threaded hole 61 is formed on a surface of the motor bracket 17 that faces the inner peripheral surface of the rotor 11 when assembled. The threaded holes 61 are formed at multiple places along the circumferential direction. In threaded hole 61, be screwed with outwardly extending bolt 62 (referring to Figure 14A , Figure 14B ).

[0196] Before performing the decomposition operation, su...

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PUM

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Abstract

A support column (9) is inserted into a through hole (2a) of a traction sheave (2) provided with bearings (3, 4). The support column (9) is supported by the bearings (3, 4). The two ends of the support column (9) are fitted into and combined with a brake stand (14) and a motor stand (17). The brake stand (14) and the motor stand (17) are fixed to a bed (22). A rotor (11) provided to an end surface of the traction sheave (2) and a stator (18) provided to the motor stand (17) are coaxially positioned. This structure results in a hoisting machine that can be easily assembled or disassembled.

Description

technical field [0001] The present invention relates to a gearless traction machine using a permanent magnet synchronous motor used for elevators and the like. Background technique [0002] The traction machine of the elevator requires a service life as long as decades as the building. However, the function of the traction machine is to support a large load and move up and down. Therefore, wear of sliding parts and degradation of resin parts are unavoidable, and replacement and repair of parts may be required earlier than the life of the building. [0003] The traction machine is usually installed in an elevator machine room located above the uppermost floor of a building. Therefore, after the building is put into use, it is often impossible to move the assembled traction machine out of the elevator machine room or into the elevator machine room. Therefore, replacement and repair of parts are required in the elevator machine room. [0004] When replacing and repairing pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/28B66B11/08
CPCB66B11/08B66D1/28
Inventor 兴梠惠一大西贵之诹访园祥子
Owner MEIDENSHA ELECTRIC MFG CO LTD