CN101817478A

CN101817478A - Remote control device for lifting mechanism of tower crane

Info

Publication number: CN101817478A
Application number: CN 201010181725
Authority: CN
Inventors: 裴守龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2010-09-01

Abstract

The invention relates to a remote control device for a lifting mechanism of a tower crane, comprising an outer frame platform, a transmitter and a receiver, wherein, the outer frame platform can be fixed on the tower body in a detachable manner for people to stand; the transmitter comprises an actuating mechanism, a single-chip microprocessor, a wireless module and a CAN or 485 protocol unit; the receiver comprises a wireless module, a single-chip microprocessor, a sensor, a signal amplification unit, a pulse width modulation unit, an amplifier unit and a CAN or 485 protocol unit, and the wireless module is in charge of demodulating and transmitting the received signal to the single-chip microprocessor; the single-chip microprocessor checks the received signal without errors and then distributes and outputs a control command to function ports through the single-chip microprocessor; the CAN or 485 protocol unit can receive and transmit data to the single-chip microprocessor like the wireless module; and the sensor amplifies and transmits a position signal to the single-chip microprocessor, and then the single-chip microprocessor determines whether relevant actions are cut-off. The remote control device has simple operation and high safety and reliability.

Description

Remote control device for lifting mechanism of tower crane

Technical field

The present invention relates to a kind of remote control equipment (RCE) of lifting mechanism of tower crane.

Background technology

China's tower machine Lifting Equipment and working process thereof also are in relative virgin state at present.Because the primitiveness of equipment causes the primitiveness of jacking process, basic by manually finishing, human intervention is too strong.Such as: when standard knot used as counterweight, it is fixed that its position is come by operator's experience fully.The angle of crane arm also is so, does not do any technical processing.The operation of jacking hydraulic actuating cylinder valve also is by finishing manually.

Because the primitiveness of equipment and technology, make all personnel that participate in the jacking work that comprise the driver all be in the occasion of danger close.No matter be that artificial misoperation or equipment breaks down, all can bring great injury to the staff.So jacking of many phases accident can appear in the annual whole nation.The Shijiazhuang City, Hebei Province city just had 8 phase accidents to take place in 2009, all had some casualties mostly and property damage, and the loss that the rectification of stopping work brings will be much larger than direct economic loss.

Carry out the jacking operation in strict accordance with operating instruction, can avoid the generation of many accidents, but can not stop the generation of accident.As: hydraulic actuating cylinder split, fracture, cylinder leaks and in let out, the accident that breakdown of equipment such as the unexpected jam of outer stock bring is kept away unavoidable.

Summary of the invention:

In order to overcome the shortcoming of prior art, the invention provides a kind of remote control device for lifting mechanism of tower crane, it is simple to operate, and is safe and reliable.

The present invention solves the technical scheme that its technical matters takes: it comprises overcoat body panel, transmitter and receiver, and described overcoat body panel detachably is fixed on the body of the tower, is used to the people that stands; Described emitter comprises operating mechanism, micro controller system, wireless module and CAN or 485 protocol elements, the special-purpose rocking bar that described operating mechanism is made up of adjustable potential device and micro-switch, other has plectrum switch, button and select switch can realize the input of switching value; Described wireless module is responsible for the instruction of micro controller system modulation and is sent; Described CAN or 485 protocol elements become to meet the instruction of CAN bus protocol or 485 agreements with the instruction transformation of described micro controller system, can directly link to each other with this unit of receiver, are formed with line control; Described receiver comprises wireless module, micro controller system, sensor, signal amplification unit, pwm unit (PWM unit), power amplifier unit and CAN or 485 protocol elements, and described wireless module is responsible for the signal demodulation that will receive and is sent to micro controller system; Described micro controller system distributes output control command by micro controller system to each function mouth with the errorless back of the signal checking that receives; CAN or 485 protocol elements also can equally with wireless module be accepted data and pass to micro controller system; Sensor is that position signal is passed to micro controller system after processing and amplifying, and micro controller system determines whether to cut off relevant action.

The present invention is simple to operate, and is safe and reliable.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is an overcoat body panel schematic front view of the present invention;

Fig. 2 is an overcoat body panel diagrammatic top view of the present invention;

Fig. 3 is transmitter principle figure of the present invention;

Fig. 4 is receiver principle figure of the present invention.

The specific embodiment

The present invention includes overcoat body panel 1, transmitter and receiver.

Described overcoat body panel 1 detachably is fixed on the body of the tower 3, is used to the people that stands.As shown in Figure 1, 2.

Described emitter comprises operating mechanism, micro controller system, wireless module and CAN or 485 protocol elements, the special-purpose rocking bar that described operating mechanism is made up of adjustable potential device and micro-switch, realize the input of analog quantity, other has plectrum switch, button and select switch can realize the input of switching value.Described micro controller system adopts the msp430 Series chip (also can adopt the micro controller system of other any brands) of TI company, analogue to digital conversion) and USART (Chinese: serial port), realize the input of analog quantity and the output of launch intruction respectively its inside carries 12 ADC (Chinese:.Described wireless module is responsible for the instruction of micro controller system modulation and is sent; Described CAN or 485 protocol elements become to meet the instruction of CAN bus protocol or 485 agreements with the instruction transformation of described micro controller system, can directly link to each other with this unit of receiver, are formed with line control.The realization of transmitter function: the realization of radio function: emitter by single-chip processor i/o pin sampling from the incoming signal of analog quantity rocking bar and, after 12 ADC conversions that carry via the micro controller system inside of emitter, after the process one-chip computer module is handled again together with incoming signals such as switching value rocking bar, button, select switches, reach wireless transmitter module by USART to send; The realization of CAN or the control of 485 protocol bus: through the data after the one-chip computer module processing, also reach CAN or 485 protocol elements by USART, after handling through CAN or 485 protocol elements, by data line directly link to each other with receiver (when wireless telecommunications freely or use during damage).

Described receiver comprises wireless module, micro controller system, sensor, signal amplification unit, pwm unit (PWM unit), power amplifier unit and CAN or 485 protocol elements, and described wireless module is responsible for the signal demodulation that will receive and is sent to micro controller system; Described micro controller system distributes output control command by micro controller system to each function mouth with the errorless back of the signal checking that receives; CAN or 485 protocol elements also can equally with wireless module be accepted data and pass to micro controller system; Sensor is that position signal is passed to micro controller system after processing and amplifying, and micro controller system determines whether to cut off relevant action.As: receive suspension hook and put in place behind the signal, the output of suspension hook position will be moved, and cuts off advancing or backward movement of suspension hook, and suspension hook is slack, unless receive " releasing position limit " order of emitter.As shown in Figure 3.

The realization of receiver function: receiver is after wireless receiving module (also can be CAN or 485 protocol elements) receives the signal from emitter, and the micro controller system of receiver at first carries out verification to signal, sends out cooresponding instruction after the verification affirmation is errorless.

Described sensor is boom position sensor and suspension hook position sensing (not drawing among the figure), and boom position sensor is fixed on the turntable of tower machine, and the suspension hook position sensing is fixed on the crane arm.Be used for guaranteeing automatically turntable and crane arm balance on body of the tower.

1), the driver switches to remote control mode with mode remote control scheme tower machine jacking process:, come on the overcoat body panel 1 down.2), crane arm is rotated to the direction of introducing the body of the tower standard knot, boom position sensor will be rotated cut-out automatically.Operate transmitters makes the swing type mechanism braking, and arm can not turn round.As adding several standard knots, just several standard knots that will add are sequentially arranged under the crane arm one by one.3), adjust the gap between stock guide wheel 3 and the body of the tower 2, be advisable with 3～5mm, loosen the length of cable, make it to be slightly larger than total top lifting height.The remote control suspension hook standard knot of slinging is put on the introduction dolly in the introduction beam that is installed in down the turntable bottom.The suspension hook standard knot of slinging again rises to highest point, and travelling car, suspension hook position transduser can cut off automatically and stop, and make tower mantle frame drop on the position of hinge on the jacking cylinder with the center of gravity on top.Unload eight high strength fastening bolts that turntable and standard knot link then, and check whether climb pawl influences and climb.4), the jacking crossbeam is placed on the marking time of tower crane, personnel all remove on the overcoat body panel 1.5), remote control starts hydraulic efficiency pressure system, piston rod is all stretched out after, the piston rod of withdrawing a little makes and climbs pawl and rest on the marking time of body of the tower.Then piston rod is all withdrawn, and the jacking crossbeam is put on the tower crane upper class marks time, and all stretches out piston rod once more, and this moment, the tower crane top was a space that can install standard knot just.6), go up the people and spur the introduction dolly, standard knot cause body of the tower directly over, the bolted connection hole of alignment criteria joint, the supreme standard knot down of withdrawal piston rod, with high strength bolt about standard knot connect.7), adjust the collapsing length of piston rod, will play turntable and standard knot to connect with high strength bolt.8), more than be the supernumerary segment process of a standard knot, if need continuous supernumerary segment, can repeat said process, after installing three joint standard knots, four diagonal braces of bottom are installed, and are adjusted and make it evenly stressed, like this tower machine energy lifting operation just.

Claims

1. remote control device for lifting mechanism of tower crane, it is characterized in that: it comprises overcoat body panel (1), transmitter and receiver, described overcoat body panel (1) detachably is fixed on the body of the tower (2); Described emitter comprises operating mechanism, micro controller system, wireless module and CAN or 485 protocol elements, the special-purpose rocking bar that described operating mechanism is made up of adjustable potential device and micro-switch, other has plectrum switch, button and select switch can realize the input of switching value; Described wireless module is responsible for the instruction of micro controller system modulation and is sent; Described CAN or 485 protocol elements become to meet the instruction of CAN bus protocol or 485 agreements with the instruction transformation of described micro controller system, can directly link to each other with this unit of receiver, are formed with line control; Described receiver comprises wireless module, micro controller system, sensor, signal amplification unit, pwm unit, power amplifier unit and CAN or 485 protocol elements, and described wireless module is responsible for the signal demodulation that will receive and is sent to micro controller system; Described micro controller system distributes output control command by micro controller system to each function mouth with the errorless back of the signal checking that receives; CAN or 485 protocol elements also can equally with wireless module be accepted data and pass to micro controller system; Sensor is that position signal is passed to micro controller system after processing and amplifying, and micro controller system determines whether to cut off relevant action.

2. remote control device for lifting mechanism of tower crane according to claim 1, it is characterized in that: described sensor is boom position sensor and suspension hook position sensing, boom position sensor is fixed on the turntable of tower machine, and the suspension hook position sensing is fixed on the crane arm.