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Hoist double-trolley electric hoist

An electric hoist, trolley-type technology, applied in the direction of the hoisting device, the spring mechanism, etc., can solve the problems of poor braking effect and low safety performance, achieve the effect of small space, improve safety, and meet the effect of safe braking

Inactive Publication Date: 2009-10-07
TIANJIN HOISTING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electric hoist mainly uses a single brake for braking. This braking method has the disadvantages of poor braking effect and low safety performance.

Method used

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  • Hoist double-trolley electric hoist
  • Hoist double-trolley electric hoist
  • Hoist double-trolley electric hoist

Examples

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Embodiment Construction

[0017] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0018] see Figure 1 to Figure 3 , a hoist double trolley type electric hoist, including a motor 1 with a brake, a reducer 2 installed on the output shaft of the motor, a bracket 3 and a reel device 4 installed on the bracket, wherein the built-in brake of the motor It is the first brake 1-2, which uses a conical AC brake. Its working principle: when the power is turned on, the motor shaft drives the first brake for axial displacement at the moment of rotation, the first brake is opened, and after the power is cut off, the motor shaft returns to its original position under the action of the pressure spring, and the brake discs 1-21 and The brake seat 1-22 generates friction, thereby playing the role of braking. The braking torque varies with...

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Abstract

The present invention relates to a hoist double-trolley electric hoist which comprises the following components: a motor with a brake, a speed reducer installed on the output shaft of motor, a bracket and a roll device installed on the bracket. The invention is characterized in that the brake of motor is a first brake. A second brake is installed at the front part of the first brake. The braking disc of the second brake is installed on the output shaft of motor through a key. The second brake is installed in the casing of motor. The roll device comprises a reel and a transmission shaft. One end of transmission shaft in the roll device is connected with the motor side. The other end of transmission shaft is connected with a braking sleeve through a connecting shaft. The braking sleeve is installed with a hydraulic braking disc through a fastener. The lower end of hydraulic braking disc is installed with a third brake. The friction plates of third brake are installed at two sides of hydraulic braking disc. Therefore the hoist double-trolley electric hoist of the invention not only can prevent the accident caused by the braking failure, but also has the advantages of small volume, simple structure, convenient installation, greatly increased safety performance and saved space.

Description

technical field [0001] The invention belongs to the technical field of crane manufacture, and in particular relates to a double trolley type electric hoist. Background technique [0002] Cranes are widely used in metallurgy, machinery, chemical industry, petroleum, energy and other fields. Electric hoists are an important part of cranes. Cause the failure of the brake, thus bringing unnecessary losses. In addition, it is also necessary to save the range of space for installing the electric hoist. Therefore, it is not only necessary to install an additional brake on the electric hoist to avoid accidents. At the same time, the space range for installing the electric hoist must also be met. The existing electric hoist mainly uses a single brake for braking, which has the disadvantages of poor braking effect and low safety performance. Contents of the invention [0003] In order to solve the technical problems in the known technology, the present invention provides a hoist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/12B66D1/54
Inventor 延绪强
Owner TIANJIN HOISTING EQUIP
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