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Cordless hoister driven by double-U-shaped linear motor

A linear motor and hoist technology, which is used in elevators, elevators in buildings, transportation and packaging, etc., can solve the problems of easy car roll, difficulty in hoist braking, and difficulty in ensuring the working air gap of the motor. Avoid the car squatting or overhead accident, facilitate synchronous operation and redundant design, and save installation space

Active Publication Date: 2013-06-19
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to suppress the influence of the inherent normal attraction on the performance of the cordless hoist to the greatest extent, the difficulty of braking the hoist, the difficulty in ensuring the working air gap of the motor, and the easy rollover of the car, etc., and provides a realization Accurate, stable and safe positioning and braking to ensure the stability of the working air gap of the motor and the cordless hoist driven by double U-shaped linear motors to prevent the car from tilting

Method used

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  • Cordless hoister driven by double-U-shaped linear motor
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  • Cordless hoister driven by double-U-shaped linear motor

Examples

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Effect test

Embodiment 1

[0031] As shown in Figure 1 (A~D), four types of cordless hoist schemes driven by double U-shaped linear motors are provided. It is a cross-sectional schematic diagram of a cordless hoist that adopts different schemes in braking, positioning and motor arrangement from Figure 1(A).

[0032] Take Fig. 1 (A) and Fig. 2 (A-C) as examples below to describe in detail.

[0033] As shown in Figure 1(A), the cordless hoist driven by double U-shaped linear motors includes car 1, linear motor drive device, brake device, positioning guide device, safety gear protection device and buffer device, and is fixed by The power supply cable on the shaft inner wall, the power supply rail contact or the power supply rail non-contact mode provide the power supply of the hoisting motor, the car 1, and the caliper brake 7.

[0034]The openings of two U-shaped fixed beams 2 are arranged opposite to each other and fixed on the installation base 14. The T-shaped motor mover mounting seat 5 is connected ...

Embodiment 2

[0054] Such as Figure 5 As shown, no caliper brake device is provided between the double U-shaped linear motors. The caliper brake 7 and the guide shoe 12 share a brake guiding mixed T-shaped rail 16 . The brake-guiding hybrid T-shaped rail 16 is used not only for braking but also for positioning and guiding the car. It is located on both sides of the car and basically on the same plane as the center of gravity of the moving part of the cordless hoist. The cordless hoist is provided with two caliper brakes 7 and is located above the guide shoe 12 . Other structures are the same as in Figure 1(A).

Embodiment 3

[0056] As shown in Figure 6 (A~C), three types of cordless hoist schemes driven by double U-shaped linear motors are provided. Figure 6(A) is a schematic cross-sectional view of a cordless hoist scheme. It is a cross-sectional schematic diagram of a cordless hoist that adopts a different scheme from that in Fig. 1(A) in terms of braking and positioning.

[0057] Take Fig. 6(A) as an example below to describe in detail.

[0058] In the cordless hoist, two U-shaped fixed beams are arranged back to back, with openings facing outwards, forming an "I"-shaped fixed beam 17, and the braking T-rail 6 is arranged on the top surface of the "I"-shaped fixed beam 17. The motor mover mounting base is composed of two L-shaped motor mover mounting bases 18, and is connected to the car 1 respectively through the car frame. Other structures are the same as in Figure 1(A).

[0059] The differences in braking and positioning methods between Fig. 6 (B-C) and Fig. 1 (A) will be further explained...

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Abstract

The invention discloses a cordless hoister driven by a double-U-shaped linear motor, which comprises a car, a linear motor driving device, a boosting clamp type brake, a positioning guide device, a safety clamp protection device and a buffer device. As for the linear motor driving device, two U-shaped linear motors are arranged side by side with inward openings face-to-face or with outward openings back-to-back to form one or multiple double-U-shaped linear motors which are positioned at one side of the car or symmetrically distributed at two sides of the car. With the adoption of the scheme,a front air gap g1 of the double-U-shaped linear motor is smaller than or equal to a rear air gap g2. The dynamic characteristic of the cordless hoister and the motors is excellent, and the magnitudeof hoisting force and generation brake force is not influenced by the change of the air gaps. Simultaneously, the boosting clamp type brake greatly improves the brake force and realizes the precise brake of the car.

Description

technical field [0001] The invention belongs to the field of cordless hoisting, in particular to a cordless hoist driven by double U-shaped linear motors. Background technique [0002] Linear motor is a new type of power machinery that can directly move linearly without the need for an intermediate transmission mechanism. It can be used in the lifting field to realize a lifting mode without wire ropes and without a lifting machine room, forming a so-called cordless lifting, which can greatly increase the number of hoists. The conveying capacity and conveying distance. This kind of cordless hoist mainly has two types: linear induction motor and linear synchronous motor. Among them, the linear synchronous motor has high force index, large working air gap and large thrust, and is recognized as the most suitable driving source for cordless hoists. From the point of view of the existing technology, the actual engineering application of the linear motor cordless hoist still faces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B9/02B66B7/02B66B11/04B66B5/16
Inventor 汪旭东许宝玉封海潮许孝卓余发山袁世鹰
Owner HENAN POLYTECHNIC UNIV
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