Wedge safety device used for high altitude lifting platform

A lifting platform and safety device technology, which is applied to the scaffolding supported by the building structure, the building structure support, the building structure support, etc. Effect

Inactive Publication Date: 2008-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defect that the existing technology cannot adapt to high-altitude lifting pl

Method used

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  • Wedge safety device used for high altitude lifting platform
  • Wedge safety device used for high altitude lifting platform
  • Wedge safety device used for high altitude lifting platform

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] This embodiment is a wedge safety device for high-altitude lifting platform 2, including wedge groove, wedge brake, wedge controller and hydraulic system, as shown in Figure 1, wedge groove and wedge brake 3 are located in the lifting Below the platform 2, the wedge controller 4 is located on the lifting platform 2, and the hydraulic system adopts the prior art, and the wedge brake single-acting oil cylinder 9 (accompanying drawing 2) is connected together with the main hydraulic system. The high-altitude lifting platform 2 (accompanying drawing 1) involved in this embodiment is the moving part of the equipment described in the present invention, and the support column is the stationary part of the equipment described in the present invention, that is, the fixed member 1.

[0036] In specific implementation:

[0037] As shown in Figure 2, a "Z" shaped wedge plate is welded on the frame below the lift platform 2 at the intersection of the lifting platform and the fixed m...

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PUM

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Abstract

The invention is a wedge block safety device for a high-altitude lift platform: a wedge block is constituted between a fixing component (1) and a lift platform (2); the wedge block (6) is positioned in a wedge slot (5); a single acting oil cylinder (9) is connected with the electromagnetic valve of a hydraulic system and controls the movement of the wedge block (6); the friction ratchet wheel (13) of a wedge controller (4) contacts the surface of the fixing component (1) to sense the descending movement of the lift platform (2). When the lift platform descends at an ultra speed, a input shaft (22) rotates rapidly so that the centrifugal force forces a mass block (27) to move outward and thus drive a wheel hub (31) and an output shaft (23) to rotate; the electromagnetic valve is powered off by a contact arm (26) and then the single acting oil cylinder (9) is turned on to return oil; the wedge block (6), driven by a cylinder spring, moves upwards to tightly press the wedge slot (5), thus braking the operation platform from ultra-speed descending. The invention is characterized in compact structure, low manufacture cost and high reliability, thus being suitable for use as the safety assurance device for major high-altitude elevators.

Description

(1) Technical field [0001] The invention relates to building construction equipment, in particular to a wedge safety device for high-altitude lifting platforms. (2) Background technology [0002] Aerial lift platform is a large-scale construction equipment that works at high altitude and requires automatic lifting at any time. Since the equipment operates at high altitude and the operators on the equipment work on it, the safety of the equipment is very important. Although the lifting device of the equipment itself ensures the safety of the equipment during normal climbing, descending and static operation, engineers still need to consider the second safety device to prevent the platform from falling in the event of an accident, that is, an effective safety device. [0003] The working requirements of the safety device for the high-altitude lifting platform are: when the platform is stationary and climbing, it should be able to prevent the platform from falling due to accide...

Claims

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Application Information

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IPC IPC(8): E04G3/28
Inventor 张洵安何官剑
Owner NORTHWESTERN POLYTECHNICAL UNIV
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