Non-powered automatic spreader and its operation method

Abstract

The invention discloses an unpowered automatic lifting appliance and an operating method thereof. The unpowered automatic lifting appliance comprises an outer cylinder, an inner cylinder and a movablebody arranged between the outer cylinder and the inner cylinder. The outer cylinder is of a hollow cylindrical structure with the top being blocked by a circular plate, a partition plate with a square through hole is arranged in the outer cylinder, and a first annular rack is fixed to the inner side of the lower end of the outer cylinder; the inner cylinder comprises a circular plate, a square column, a circular column and a cylinder body which are sequentially connected from top to bottom, a second annular rack is fixed to the outer side of the cylindrical column, and clamping jaws are arranged on the outer side of the cylinder body; and the movable body comprises a first cylinder, a second cylinder and a third cylinder which are sequentially connected from top to bottom, a plurality offixing shafts vertically penetrating through the cylinder wall of the second cylinder are arranged on the second cylinder, and rolling sleeves are arranged on the shafts in a sleeving mode and used for being matched with the first annular rack and the second annular rack to move so as to push the clamping jaws to swing. According to the unpowered automatic lifting appliance and the operating method thereof, objects can be hoisted without driving of external power, the service life is long, the cost is low, and reliability is high.

Description

technical field [0001] The invention relates to the field of hoisting, in particular to an unpowered automatic hoisting tool and an operation method. Background technique [0002] Existing automatic spreaders are all powered spreaders except for fixed-point grasping and releasing spreaders. Powered spreaders rely on external power to drive the mechanical parts in the spreader to realize the grasping and releasing of objects. . However, for some special environments, external power sources such as drive motors will be affected by the environment, resulting in shortened service life and reduced reliability. For example, in nuclear power plants with nuclear radiation, under the influence of nuclear radiation, the service life of the driving motor is significantly shortened and the reliability of operation is low. Frequent replacement of power sources leads to high production costs and heavy workload. Contents of the invention [0003] In order to solve the above-mentioned ...

AI Technical Summary

Problems solved by technology

However, for some special environments, external power sources such as drive motors will be affected by the environment, resulting in shortened service life and reduced reliability

For example, in nuclear power plants with nuclear radiation, under the influence of nuclear radiation, the service life of the driving motor is significantly shortened and the reliability of operation is low. Frequent replacement of power sources leads to high production costs and heavy workload

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