Anti-falling safety device with pinion and rack overload protection

An anti-fall safety device and overload protection technology, applied in elevators, transportation and packaging, etc., can solve the problem of damage to the gear and rack of the anti-fall safety device, so as to avoid jamming and ensure reliable operation

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An anti-fall safety device and overload protection technology, applied in elevators, transportation and packaging, etc., can solve the problem of damage to the gear and rack of the anti-fall safety device, so as to avoid jamming and ensure reliable operation

CN104370177AActive Publication Date: 2015-02-25王少腾 +2

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Embodiment Construction

[0023] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0024] Such as Figure 1-3 As shown, an anti-fall safety device with gear overload protection includes a support plate 6, a clamping wheel 1, a large gear 2, a pinion 3, a rack 4, a support shaft 5, a support sleeve 11, a connecting seat 12, an elastic Trigger device 13, guide shoe 9; the middle part of the support plate 6 is provided with a chute 61, the support shaft 5 passes through the chute 61, and can move up and down along the chute 61; the guide shoe is U-shaped, set At the upper and lower ends of the support plate chute 61, the two clamping wheels 1 are arranged on one side of the support plate 6, and symmetrically arranged on both sides of the chute 61; the large gear 2 is linked with the clamping wheel 1, so that The pinion 3 meshes with the bull gear 1, the rack 4 meshes with the pinion 3, and the support shaft 5 is linked with the rack 4; the s...

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Abstract

Disclosed is an anti-falling safety device with pinion and rack overload protection. The problem that when a hanging basket accidentally falls down, a pinion and a rack of an existing anti-falling safety device are damaged due to overload is solved. A first elastic element is arranged between a bearing shaft and a rack. A second elastic element is arranged between a pinion and a bearing plate. When a clamping wheel clamps a guide rail before the bearing shaft reaches the lower end of a sliding groove, due to the fact that the bearing shaft and the rack are in elastic connection, the bearing shaft continues to move downwards to the lower end of the sliding groove, and overload caused when loads directly act on the rack through the bearing shaft is avoided; When the clamping wheel does not completely clamp the guide rail after the bearing shaft reaches the lower end of the sliding groove, the clamping wheel and the guide rail move relatively to continue to rotate, due to the fact that the pinion and the bearing plate are in elastic connection, the pinion will roll upwards along the rack by overcoming elastic force until the clamping wheel completely clamps the face of the guide rail, the phenomenon that the pinion and a big gear wheel are clamped is avoided, and it is ensured that the pinion is protected against overload breakage.

Description

technical field [0001] The invention relates to an anti-falling safety device, in particular to an anti-falling safety device with gear and rack overload protection. Background technique [0002] The construction hoist used in the construction industry and other constructions, which is driven by steel wire ropes, undertakes the main vertical transportation work in the project. Due to the heavy weight and frequent use each time, coupled with the harsh environment of the construction site, it is easy to break the rope and fall. safe question. [0003] In order to solve the problem of falling from broken ropes, it is generally necessary to install an anti-fall safety device to prevent falling accidents. Chinese patent (authorized notification number CN203419655U) discloses an eccentric wheel-type instantaneous lifting facility anti-fall safety device suitable for channel steel guide rails. When the rope breaks and falls, the supporting shaft drives the rack to move, the rack d...

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Application Information

Patent Timeline

25 Feb 2015

Publication

CN104370177A

IPC: B66B5/02; B66B5/14

CPC: B66B5/02; B66B5/14

Inventors: 吴剑武; 王少腾