An anti-fall safety system for a construction hoist

Abstract

The invention discloses an anti-falling safety system of a construction hoist. The system comprises a guide rail rack and cages, wherein at least two safety pin mechanisms are arranged on the upper surfaces of the cages and at least two safety pin mechanisms are arranged on the lower surfaces of the cages, wherein each safety pin mechanism comprises a base, an electromagnet and a pin core of the safety pin mechanism; each pin core of the safety pin mechanism is positioned in a housing; an annular groove is formed, at one end of the housing, on each pin core of the safety pin mechanism; a baffle plate is mounted on each housing; one end of each baffle block is positioned in the groove; a spring is arranged in each housing; one end of each spring is connected to each pin core of the safety pin mechanism; an electromagnetic movable iron core is inserted into an electromagnet which is connected to a controller; and each controller is connected to a three-axis acceleration sensor positioned on the cages. According to the system disclosed by the invention, by detecting the state of the cage in real time by the acceleration sensors, when the cage is in an abnormal state, the controllers control the pin cores of the safety pin mechanisms to be ejected and inserted onto the guide rail rack, so that the cage is stopped and safety accidents are avoided.

Description

technical field [0001] The invention relates to an anti-fall safety system for a construction elevator, belonging to the field of elevators. Background technique [0002] At present, with the development of the city, there are more and more high-rise buildings in the city. When building these high-rise buildings, in many cases, construction elevators are used to transport various personnel and building materials. The fall of the construction elevator cage is a An important safety hazard in the construction process. In terms of anti-fall, the construction elevator has only one means of anti-fall safety device. In case of extreme events such as failure of the anti-fall safety device, motor burnout, and wire rope breakage, there are no other measures to ensure safety. [0003] The utility model patent No. 201520762107.X discloses a construction elevator fall prevention system. This patent still has the following problems: In this patent, the stop pin mechanism is on the guide r...

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Problems solved by technology

[0002] At present, with the development of the city, there are more and more high-rise buildings in the city. When building these high-rise buildings, in many cases, construction elevators are used to transport various personnel and building materials. The fall of the construction elevator cage is a An important safety hazard in the construction process. In terms of anti-fall, the construction elevator has only one means of anti-fall safety device. In case of extreme events such as failure of the anti-fall safety device, motor burnout, and wire rope breakage, there are no other measures to ensure safety.

[0003] The utility model patent No. 201520762107.X discloses a construction elevator fall prevention system. This patent still has the following problems: In this patent, the stop pin mechanism is on the guide rail frame. The pin mechanism must be maintained, which is difficult to maintain; in terms of system installation, it is installed separately, which is cumbersome; and in terms of system sensitivity, the Hall sensor can only obtain the speed of the cage within a certain distance, and the response is slow. With keyway, its processing and installation conditions are high, resulting in low yield

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