Unpowered lifting appliance

Abstract

The invention discloses an unpowered lifting appliance. The unpowered lifting appliance comprises a lifting appliance frame, a telescopic connecting rod, a supporting rod and two claw rods, wherein the two claw rods are symmetrically arranged on the two sides of the lifting appliance frame; the upper ends of the two claw rods are respectively, rotatably and movably connected with one side of the lifting appliance frame; the lower ends of the two claw rods are respectively, detachably and fixedly connected with a vehicle body; the telescopic connecting rod comprises a first connecting rod, a second connecting rod and a third connecting rod which are sequentially and movably connected; the left end of the first connecting rod is fixedly connected with the claw rod on the left side; the rightend of the third connecting rod is fixedly connected with the claw rod on the right side; the supporting rod fixedly penetrates through the center of the lifting appliance frame; the lower end of thesupporting rod is movably connected with the middle of the second connecting rod; a positioning pull rope with a fixed upper end position is arranged at the joint of the first connecting rod and thesecond connecting rod; and a spring with a fixed upper end position is arranged at the joint of the second connecting rod and the third connecting rod. The unpowered lifting appliance is simple in structure, low in cost, and capable of reducing the number of operators, shortening the hanging time and eliminating the potential safety hazards.

Description

technical field [0001] The invention relates to a sling, in particular to a non-powered sling. Background technique [0002] When it is necessary to carry out welding or maintenance work on the car body, it is necessary to lift the car body and move it from one assembly platform to another. Although the spreader driven by hydraulic motor, hydraulic cylinder or electric motor has a high degree of automation, the structure is complex and the cost is high. At the same time, the installation of power equipment will increase the signal transmission and action time. At present, the front car body uses a manual spreader, which is connected with the front car body by an iron chain flexible hook. Each platform is manually operated by an employee to take and hang the spreader. There are the following problems: [0003] 1. The work is simple and the efficiency is low. It takes 6 seconds for the staff to take and hang the hook; [0004] 2. There is a high risk of extrusion during the ...

AI Technical Summary

Problems solved by technology

[0003] 1. The work is simple and the efficiency is low. It takes 6 seconds for the staff to take and hang the hook;

[0004] 2. There is a high risk of extrusion during the process of manually removing and hanging the hook;

[0005] 3. Other employees of the production line wait for a long time during the operation of the spreader

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