Gear ratio devices for hoisting gear, hoisting gear and cranes

A technology of hoisting mechanism and variable speed ratio, which is applied in hoisting device, transmission device, clockwork mechanism, etc., can solve the problems of small operating speed range of hoisting mechanism, slow falling speed of crane, and limited maximum speed value, etc. Achieve the effects of reducing energy consumption, increasing rope capacity, and reducing use costs

Active Publication Date: 2016-05-11
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Since the speed ratio of the reducer is a fixed value (that is, a single speed ratio), the operating speed range of the hoisting mechanism is small
[0005] (2) Since the operating speed range of the hoisting mechanism is small and the maximum speed value is limited, the crane's falling speed is slow when it is light-loaded and empty, with low efficiency and high energy consumption
[0006] (3) Since the installation space of the reel is affected by the motor, the reel cannot be made too large

Method used

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  • Gear ratio devices for hoisting gear, hoisting gear and cranes
  • Gear ratio devices for hoisting gear, hoisting gear and cranes
  • Gear ratio devices for hoisting gear, hoisting gear and cranes

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Embodiment Construction

[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0039] In the present invention, in the case of no contrary description, the used orientation words such as "up, down, left and right" usually refer to the up, down, left and right shown in the accompanying drawings; "inside and outside" Refers to the inside and outside of the outline of each part itself.

[0040] According to one aspect of the present invention, a gear ratio device for a hoisting mechanism is provided, with appropriate reference to figure 2 and image 3As shown, the gear ratio device includes a first power input member (such as the first friction wheel 1 described below), a second power input member (such as the second friction wheel 2 descr...

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Abstract

The invention discloses a variable speed ratio device for a hoisting mechanism, the hoisting mechanism and a hoist. The variable speed ratio device comprises a first power input part, a second power input part, a first transmission part, a second transmission part and a push-pull device. The first transmission part is different from the second transmission part in transmission ratio; the push-pull device can push the first power input part to move relative to a first driving wheel so as to enable the fist power input part to be connected with the first driving wheel to perform synchronous rotation, and the second power input part is separated from a second driving wheel; or the second power input part is enabled to be connected with the second driving wheel so as to rotate synchronously, and the first power input part is separated from the first driving wheel. The operating speed range of the hoist can be enlarged by the variable speed ratio device.

Description

technical field [0001] The invention relates to the field of cranes, in particular to a gear ratio device for a hoisting mechanism, a hoisting mechanism and a crane. Background technique [0002] Such as figure 1 As shown, the hoisting mechanism of the existing tower crane generally includes a motor 101, a shaft coupling 102, a speed reducer 103, a reel 104 and a brake 105. The speed ratio of 103 is a fixed value, and the torque is increased by deceleration of the reducer 103, which drives the reel 104 to rotate, thereby increasing the load, realizing high speed under light load and low speed under heavy load. [0003] However, the hoisting mechanism of this tower crane has the following disadvantages: [0004] (1) Since the speed ratio of the reducer is a fixed value (that is, a single speed ratio), the operating speed range of the hoisting mechanism is small. [0005] (2) Since the operating speed range of the hoisting mechanism is small and the maximum speed value is l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/14F16H37/02F16H61/28
Inventor 陈凯
Owner ZOOMLION HEAVY IND CO LTD
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