Moment limiter of single and double horizontal arm tower crane
A torque limiter, tower crane technology, applied in the direction of cranes, clockwork mechanisms, hoisting devices, etc., can solve the critical point of not being able to grasp the moment overload, the two machines cannot be used in common, and the driver tower crane is inconvenient to use And other issues
Inactive Publication Date: 2010-02-17
JIANGXI FEIDA ELECTRICAL EQUIP
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Problems solved by technology
[0002] The moment limiter currently on the market cannot be applied to double-arm tower cranes with special structures, but only to single-arm tower cranes, and cannot be used for both machines. Move in a safe direction, which leads to overloading, the amplitude cut-off cannot move, the driver of the tower crane cannot grasp the critical point of moment overload, which brings inconvenience to the driver on-site construction and the use of the tower crane
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[0018] The present invention will be described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.
[0019] This embodiment is composed of a power supply circuit, four signal acquisition and amplification circuits with the same configuration, an embedded microcontroller, a communication interface circuit, a PC, four output control circuits, an alarm circuit, a display circuit and operation keys.
[0020] The power circuit is composed of transformer BYQ, two full-wave rectifier circuits QL1, Q1 voltage regulator chips V1(7806), V2(7806), V3(7805), capacitors C51-C56, to complete the AC-DC conversion of 380V and 220V AC, Get +6V, -6V, +5V DC levels.
[0021] The four signal acquisition and amplification circuits 1, 2, 3, and 4 collect signals through corresponding sensors, and after amplifying and processing, they are respectively input to the four input terminals of the embedded microcontroller IC1. After the program acquisition ...
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The invention discloses a moment limiter of a single and double horizontal arm tower crane. The moment limiter comprises a power circuit, four signal acquisition and amplification circuits with the same structure, an embedded microcontroller, a communication interface circuit, a PC, four output control circuits, four display circuits and operation keys, wherein the four signal acquisition and amplification circuits acquire signals through corresponding sensors, and after being amplified, the signals are respectively input into four input ends of the embedded microcontroller; after the signalsare processed by a procedure of the embedded microcontroller, the processed signals are respectively sent to the display circuits to be displayed and output to the output and control circuits so as torespectively carry out cutting control on moments, weight and amplitudes. The invention works under multiple working conditions by adopting a method for controlling a moment difference and is suitable for various types of tower cranes. The invention can realize the interlocking of two switching signals so as to ensure that a small crane is limited to move towards a dangerous direction and can automatically move to a safe direction when the small crane has an exceeded moment difference, realize multi-working station work, and is suitable for many types of tower crane, thereby achieving the function of automatically moving back under a moment difference overload condition.
Description
technical field [0001] The invention relates to a moment limiter for tower cranes with single and double horizontal arms, belonging to the technical field of tower crane safety. Background technique [0002] The moment limiter currently on the market cannot be applied to double-arm tower cranes with special structures, but only to single-arm tower cranes, and cannot be used for both machines. The safety direction moves, which leads to overloading, and the amplitude cut-off cannot move, and the driver of the tower crane cannot grasp the critical point of moment overload, which brings inconvenience to the driver's on-site construction and the use of the tower crane. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art by obtaining the weight and amplitude of each working arm and the moment difference of the working arms on both sides, multi-signal input and multi-signal output. [0004] The object ...
Claims
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IPC IPC(8): B66C23/88B66C23/90B66D1/58
Inventor 罗鹤飞李盛乾王江文陈琳
Owner JIANGXI FEIDA ELECTRICAL EQUIP