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Rope-free hoister with force increasing mechanism brake

A technology of booster mechanism and brake, applied in elevators, elevators in buildings, transportation and packaging, etc., can solve the problems of difficulty in implementation, large driving power of brakes, large volume, etc. Wide range of effects

Inactive Publication Date: 2011-05-04
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the current cordless hoists adopt a drive structure with the same working air gap on both sides and double-sided linear motors arranged face to face. Although it can offset most of the normal attraction between each other and reduce the positive pressure of the car's roll, its structure is complex and takes up much space. The space is large; the driving structure of the unilateral planar linear motor is simple, and the applicable occasions are wider, but when the lateral width of the motor is large, the normal force is large, the stress is concentrated, and there are high requirements for support
Since the linear motor cordless hoist has no counterweight and the lifting load is large, the brake drive power is large, the volume is large, and it is difficult to realize, which is the key bottleneck problem that limits the engineering application of the linear motor cordless hoist.

Method used

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  • Rope-free hoister with force increasing mechanism brake
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  • Rope-free hoister with force increasing mechanism brake

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the cordless hoist with a booster mechanism brake of the present invention mainly includes a supporting steel beam assembly, a car, a linear motor drive device, a positioning guide device, a braking device, a safety gear protection device, and a buffer device.

[0037] The supporting steel beam assembly 1 is in the shape of a strip, and is installed vertically on the mounting support 2 on the inner wall of the wellbore. A concave bar-shaped groove 1a with an opening facing outward is respectively arranged in the vertical direction as a guide track and a brake track;

[0038] Both sides of the concave strip groove 1a are convex strips I 1b and convex strips II 1c, and the convex strips I 1b or convex strips II 1c are used as brake rails for the safety gear protection device;

[0039] The brake block 103 of the booster caliper brake 10 is held in the concave strip groove 1a. When braking, the b...

Embodiment 2

[0063] The above-mentioned positioning and guiding device of the linear motor mover 6 can also be realized by a linear guide rail and a slider. The linear guide rail is installed on the two sides of the supporting steel beam assembly 1, and the slider is installed on the back iron 6b of the linear motor mover corresponding to side, and aligned with the linear guide rail, the slider can slide freely on the linear guide rail, thereby ensuring that the linear motor mover 6 moves up and down in the vertical direction on the supporting steel beam assembly 1 .

Embodiment 3

[0065] Such as Figure 9 , taking two rows of linear motor stators installed in parallel as an example, but not limited to two rows of linear motor stators. Two rows of linear motor stators 4 are installed in parallel in the vertical direction on the front of the supporting steel beam assembly 1, and each row of linear motor stators 4 is correspondingly arranged with a row of linear motor movers 6, and each row of linear motor stators 4 is a flat and slender structure. Support rails 155 are arranged between the linear motor stators 4 in each row, and support rollers 153 are installed on the linear motor movers 6, corresponding to the support rails 155. The support rollers 153 support the linear motor movers 6 to slide on the support rails 155, which can disperse the linear motor. The normal force of the motor reduces the requirements for the supporting rollers; the side edges of the two rows of linear motor mover back irons 6b are respectively equipped with multiple groups of ...

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Abstract

The invention discloses a rope-free hoister with a force increasing mechanism brake, which comprises steel support beam assemblies, a cage, linear motor driving devices, a positioning and guiding device, a braking device, a safety gear and a bumper. The elongated steel support beam assemblies are arranged on the inner wall of a shaft along a vertical direction. Linear motor stators of the linear motor driving devices are arranged on the front surfaces of steel support beam assemblies. Concave elongated grooves are formed on the two lateral surfaces of each steel support beam assembly. The force increasing caliper brake is braked on the bottom surfaces of the concave elongated grooves. Main positioning and guiding wheels of linear motor guiding and positioning wheel groups are connected in the concave elongated grooves for rolling. The force increasing caliper brake of the rope-free hoister is provided with a force increasing link mechanism, and has a small volume, light weight and high braking capacity. The rope-free hoister with the force increasing mechanism brake has triple protection devices which are the brake for power-off braking, the linear motors for power-off generation braking and the safety gear with an overspeed braking protection function respectively, so the safety and reliability of the hoister are ensured.

Description

technical field [0001] The invention belongs to the field of cordless lifting, and in particular relates to a cordless hoist with a booster mechanism brake. Background technique [0002] Linear motor is a new type of power machinery that does linear motion. It is applied in the field of lifting, which can realize the lifting mode without wire rope and without lifting machine room, forming a so-called cordless hoist, which can greatly increase the conveying capacity and conveying distance of the hoist. . This kind of cordless hoist mainly has two driving structure types: induction linear 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. [0003] Most of the current cordless hoists adopt a drive structure with the same working air gap on both sides and double-sided linear motors arranged face to face. Although it c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B9/02B66B7/02B66B11/00B66B5/16
Inventor 汪旭东许孝卓许宝玉封海潮袁世鹰行志刚
Owner HENAN POLYTECHNIC UNIV
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