Air bag type pulling trolley

Abstract

The invention discloses an air bag type pulling trolley comprising a rack. The rack comprises a carrying platform; an air bag arranged among four supporting legs is arranged below the middle of the carrying platform. A plurality of supporting rollers are arranged at the bottom of the carrying platform and on the inner sides of the supporting legs; a high-pressure gas main pipeline penetrates the carrying platform, a high-pressure gas connector is arranged at the end of the high-pressure gas main pipeline, the high-pressure gas main pipeline is in rotary sealing connection with an inflation anddeflation connector through a hose; and a traction base is arranged at the end of the rack. The trolley has the beneficial effects that: because the airbag rolls under tension after being inflated, pulling transportation of carried objects is realized; on the basis of a design of walking wheels, the risk that the trolley suddenly sits on the bottom can be reduced, so that the use stability and safety are improved; a problem of repeated inflation and deflation can be solved by the adoption of an air pressure control valve, so that the use efficiency of the air bag is improved, and the servicelife of the air bag is prolonged.

Description

technical field [0001] The invention relates to an airbag type pulling trolley. Background technique [0002] At present, in the process of moving concrete components of caissons in ports and wharves and onboard transportation, the movement of components is usually achieved by lifting them with airbags and then pulling them. In the process of use, first use the air bag to lift the heavy object from the bottom to a certain height, and then place a lot of non-inflatable rolling air bags at the bottom. After the rolling air bags are fully inflated, the heavy object is lifted to a certain height, and then the heavy object is pulled If it moves in a certain direction, the rolling airbag at the bottom is like a "rolling log" for pulling and transporting heavy objects. [0003] In practical application, there are two problems: first, the problem of repeated inflation and deflation. Before moving the heavy object, it is necessary to arrange an uninflated rolling airbag in the dire...

AI Technical Summary

Problems solved by technology

[0003] In practical application, there are two problems: first, the problem of repeated inflation and deflation

Before moving the heavy object, it is necessary to arrange an uninflated rolling airbag in the direction of the walking path in advance, and then inflate it when the edge of the heavy object reaches the airbag. As the heavy object moves, the rolling airbag gradually rolls to the end of the heavy object. Then deflate again, move to the front of the direction of travel, repeat the above steps, generally prepare at least 3 spare airbags, and there are repeated inflation and deflation operations, even if more spare airbags are arranged, it is still Inflate the airbags one by one while rolling

[0004] The second is the risk problem. It often happens that one of the airbags explodes due to excessive pressure, which increases the force on the other airbags and increases the internal pressure. If the second airbag bursts again, it will inevitably lead to the remaining airbags. The internal pressure of the airbag is further increased, which leads to a chain reaction, many airbags explode, and finally the heavy objects fall directly on the ground, resulting in a fatal "bottom sitting" engineering accident, and the heavy objects cannot be moved and transported

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