Anti-falling climbing-assisting device

Abstract

The invention discloses an anti-falling climbing-assisting device. The device comprises a shell, wherein a rotatable winding drum is arranged in the inner space of the shell, a steel rope is wound around the winding drum, the winding drum is driven by a driving motor to rotate so as to enable the steel rope to do lifting motion along with rotation of the winding drum, an inner wheel coaxially connected with the winding drum in a transmission mode is arranged on the winding drum, a rotatable ratchet pawl is installed on the side surface of the inner wheel in the circumferential direction of theinner wheel, a return tension spring is arranged between the inner wheel and the ratchet pawl, an outer wheel which is coaxial with the inner wheel and arranged outside the inner wheel in a sleevingmode is arranged on the shell, and ratchets cooperating with the ratchet pawl for braking are arranged on the inner side surface of the outer wheel, so that the ratchet pawl can extend outwards to abut against the ratchets for braking under the action of centrifugal force generated by rotation of the inner wheel when the rotating speed of the winding drum reaches a set value.

Description

technical field [0001] The invention relates to the technical field of climbing aids for vertical ladders, in particular to anti-fall climbing aids. Background technique [0002] Tower cranes or shafts are often equipped with vertical ladders up to tens or even hundreds of meters. When climbing these vertical ladders, the staff not only need to consume a lot of physical strength, but also have the risk of falling from a high altitude if they are a little careless. Therefore the difficulty of climbing of vertical ladder is bigger and has higher danger. [0003] In order to reduce the climbing difficulty of the vertical ladder and improve the safety of vertical ladder climbing. Chinese patent (notification number is CN106892366A) discloses an electric anti-fall climbing aid, which includes a shell, and also includes a reel installed on the shell, a sling, a driving motor and an anti-fall protection brake structure; the inside of the shell has a hollow The shell is provided w...

AI Technical Summary

Problems solved by technology

[0005] But there are following deficiencies: because its brake structure includes ratchet, ratchet and cylinder, and utilizes the permanent magnet DC deceleration motor that the rotating shaft is connected with the rotating shaft of the reel to generate the braking signal, and controls the solenoid valve guide of the cylinder through, thus forming the braking control of the reel

It can be seen that the above-mentioned technical solution only has a single anti-fall braking structure, and once it fails, it will easily lead to the failure of the anti-fall function.

Images