Escalator without step shaft

Abstract

The invention provides an escalator without a stepped shaft. By eliminating the step shaft of a step chain, a plurality of steps are directly installed on the step chain. The escalator has stable structure, small volume, convenient installation, easy transportation and storage, and convenient maintenance. The escalator comprises a driving unit and a step unit, and the step unit is driven to move by the driving unit in a transmission mode. The step unit comprises the step chain and the steps, a long pin shaft is arranged on the step chain, clamping claws are arranged on the steps, a step clamping claw is clamped by a clamping plate, and the clamping plate is locked by a washer and a nut. According to the scheme, the long pin shaft is arranged at the position of an original step shaft, a shaft sleeve is arranged on the long pin shaft, and a retaining ring is arranged at the tail end of the long pin shaft. The retaining ring limits the shaft sleeve through the retaining ring, after the step clamping claw can be directly installed on the shaft sleeve, the step clamping claw is clamped by the clamping plate, then the clamping plate is locked by the washer and the nut, and thus the installation mode of the step chain and the step is realized.

Description

technical field [0001] The invention belongs to the field of escalators, in particular to an escalator without step shafts. Background technique [0002] In the prior art, the operating principle of the steps of the escalator is that the drive sprocket drives two step chains arranged on the left and right sides to move in a closed-loop trajectory, wherein the manned steps are installed on the step chains and driven by the step chains. At present, the main structure of the cascade chain is that there is a cascade shaft in the middle of the chains on both sides (such as figure 1 As shown), the step shaft directly connects the left and right chains into a whole. The step shaft 99 is provided with a plastic bushing 97 and a clamp hoop 98, and the steps are directly installed on the bushing of the step shaft, and the steps can be placed on the step shaft Slide left and right, align the steps with the front and rear steps, and lock the clamp after confirming that there are no wro...

AI Technical Summary

Problems solved by technology

The principle of the existing stepped shaft structure is simple, but there are still the following deficiencies: (1) The experience requirements for the installer of the steps are relatively high, there is a risk of out-of-control installation, and it takes a lot of time and effort to repeatedly adjust the alignment of the steps; (2) , There is still a risk of axial movement in the locking method of the clamp radially clamping the step shaft; (3) Since the step shaft in the step shaft structure shares part of the passenger load, most manufacturers make the steps relatively lightweight , the relatively thin wall thickness and reinforcing ribs put forward higher requirements for casting equipment and technology, and the defective rate will increase accordingly, increasing safety hazards; (4), the step chain with step shaft occupies a large volume, transportation and The storage cost is relatively high; (5), each stepped shaft with a gear of more than ten centimeters, the narrow space makes maintenance inconvenient, and there is a safety hazard during maintenance work on the stepped shaft, and there is a risk of falling into the air

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