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A chain hoist load limiter

A chain hoist and load limiter technology, which is applied in hoisting devices and clockwork mechanisms, can solve the problems of complex structure and inconvenient use, and achieve the effect of simple structure and safe and reliable hoisting process

Active Publication Date: 2018-06-26
杭州维多利机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure is complex and inconvenient to use

Method used

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  • A chain hoist load limiter
  • A chain hoist load limiter
  • A chain hoist load limiter

Examples

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Embodiment Construction

[0019] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.

[0020] refer to Figure 1-6 A specific embodiment of the present invention includes a brake disc 2 whose left end is fixed on the long axis of the chain hoist and takes the long axis of the chain hoist as the axis, and the right end of the brake disc 2 is axially provided with a load limiter assembly installed The shaft 9 and the stop nut 8 compress the compression spring 6, the pressure plate 5 and the load-limiting hand chain wheel 4 axially threaded on the installation shaft 9 of the load limiter assembly from right to left on the brake disc 2 and Between the stop nuts 8, friction plates 3 are respectively...

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Abstract

The invention discloses a chain block load limiting device. The chain block load limiting device comprises a brake disc, the left end of the brake disc is fixed to the long axis of a chain block, and the long axis of the chain block serves as the axis of the brake disc. The right end axis of the brake disc is axially provided with a load limiting device assembly installation shaft. A load limiting hand chain wheel is connected to a transmission chain wheel through a transmission chain. The transmission chain wheel is connected to a hydraulic oil tank. The hydraulic oil tank is internally provided with an oil inlet, a first oil outlet and a second oil outlet. The oil inlet is internally provided with a first impeller. A driving wheel is connected to the outer side of the first impeller. The first oil outlet and the second oil outlet are reversely formed. One-way valves are arranged in the first oil outlet and the second oil outlet. The first oil outlet is internally provided with a second impeller. The outer side of the second impeller is connected to the transmission chain wheel. A telescopic oil cylinder is connected to the second oil outlet. The top of the telescopic oil cylinder is in compression joint with the load limiting device assembly installation shaft. According to the chain block load limiting device, the defects in the prior art can be overcome, and the structure of the chain block is simplified.

Description

technical field [0001] The invention relates to a mechanical hoisting mechanism, in particular to a chain hoist load limiter. Background technique [0002] As a light and small lifting tool, the chain hoist is widely used, especially in small working places and places without power supply, it has its unique advantages. However, overloading will cause many serious consequences during use. Therefore, it is necessary to install a load limiting device on the chain hoist, which can improve the safety of the chain hoist. However, most domestic chain hoists do not have load limiters at present. The load limiter has a complex structure, and the load limiter slips due to overloading, and when the lifting object is to be put down, the load limiter slips and cannot be put down, which is very inconvenient to use. The utility model patent CN 204057825 U applied by the inventor provides a chain hoist load limiter, which realizes the reverse lowering of the hoisted object through the roll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/58
CPCB66D1/58
Inventor 张景东
Owner 杭州维多利机械有限公司
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