CN105731201A - Automatic leveling controller of gantry elevator - Google Patents

Abstract

The invention discloses an automatic leveling controller of a gantry elevator. The automatic leveling controller comprises a position sensing part, a counting part, a comparing and judging part, a floor selecting part, a preset number generation part and an output control part. The design is a novel elevator control device, a single chip microcomputer is adopted as the controller, and the vertical running position of the elevator is determined through adopting a counting method; after an operator presses the button of a certain floor, a corresponding preset number is generated; during the running process of the elevator, the count value is compared with the preset number at any time, and when the count value reaches the preset number, a motor is controlled to stop; and the control device is simple in hardware circuit, flexible in software function, and convenient to operate and maintain, and is safe and reliable.

Description

A kind of automatic floor-levelling controller of arch type lifter

Technical field

The present invention relates to a kind of device that arch type lifter is automatically controlled, belong to automation field and be particularly based on the automatic floor-levelling controller of monolithic processor controlled arch type lifter.

Background technology

Building hoist is indispensable vertical transport instrument in high-building construction, is widely used in construction site and bridge construction building site.It is mainly responsible for the task of transporting workmen, also transports substantial amounts of construction equipment and material.Its work efficiency is high；During loading, it is adaptable to various article, it is not necessary to special suspender, it is not required that material is carried out a lot of packing processes.In construction site, application well cabinet frame transportation system widely, in order to from ground to transporting construction material between a certain construction platform or different construction platforms.

Transporting power and the shipping height of building hoist improve day by day, and operating rate is more than 34m/min.But building hoist automatic control level is relatively low at present.According in Guangzhou, Wuhan, Jinan, the investigation of Deng Di job site, Shenyang, it is thus understood that China building well cabinet frame transportation system, majority still adopts manual operations.Minority adopts electronic circuit to control.The former operates inconvenience, and security reliability is poor；The latter is expensive, and volume is big, and inconvenient maintenance there is no security alarm measure.Most elevator does not overload restriction, can only lean on controllers quantity or estimate that the weight of material is controlled and treat weight, it does not have the calling of floor and display function, it does not have automatically select layer and story-leveling function.When flat bed is in place, it is necessary to playing braking lifting motor to and fro to adjust upper-lower position, except adding labor strength, it is also very important that equipment causes attached impact.Although the control method of elevator can be introduced, but for elevator, it appears cost is too high.Therefore, which floor current building hoist can not predict at work needs to stop and the langding accuracy of cage is not high, it is impossible to precognition loading rate, the operation of building hoist is passive, and conevying efficiency is low.

But building hoist automatic control level is relatively low at present, and majority still adopts manual operations.Minority adopts electronic circuit to control.The former operates inconvenience, and security reliability is poor；The latter is expensive, and volume is big, inconvenient maintenance.Therefore, China's existing building shipment control system is badly in need of updating, transforming.

Summary of the invention

It is an object of the invention to design a kind of automatic floor-levelling controller based on monolithic processor controlled arch type lifter, by the operation of Single-chip Controlling arch type lifter, make the resting in designated floor of cage accurately safety of elevator.

The object of the present invention is achieved like this:

A kind of automatic floor-levelling controller of arch type lifter, its composition includes: position sensing part 1, segment count 2, multilevel iudge part 3, floor select part 4, preset number generation module 5 and output control module 6 to form, it is characterized in that: position sensor part is at some desired part of power transmission shaft, one counter code disc, the both sides of dish respectively light transmitter-receiver device are installed.During elevator duty, disk rotational, its actually rise rotating number of turns and angle and elevator has and directly contacts；The pulse received is counted by segment count；The count value of pulse and preset value are compared by multilevel iudge part, to determine stopping or opening of motor, upper or under；Floor selection part is a multikey self-lock switch, chooses first floor every time, after choosing floor, has also determined that preset number；The generation process of preset number: after elevator is installed for the first time or floor increases, first elevator manual mode is opened to this new floor, and carry out manual flat bed location, it is determined that after, press preset button, then the position of this floor is just memorized；Output control part: by the operating of optical coupler and Control motor.

The present invention is grouped into by position sensing part, segment count, multilevel iudge part, floor selection part, preset number generating portion and output control part.Main frame have employed MCS mono-5l series monolithic 8031, keyboard and digital display circuit.Being connected with main frame by parallel interface chip 8l55, elevator rises or falls and is driven through conventional gear train by AC three-phase wire wound asynchronous motor, and motor forward/backward rotation drives the raising and lowering of elevator.The design is arranged on the control panel keyboard of each construction floor, automatically detects the call signal of each construction layer, it is judged that the rising of call signal, decline state, and the run location situation according to cage, automatically selects layer and controls cage landing and accurate flat bed.Arrive, by the photoelectric encoder detection being arranged in motor reduction gearbox, the exact position hugging layer, and give single-chip microcomputer in the way of outside count pulse.Single-chip microcomputer, according to program, controls the startup of servomotor, stopping with different solid-state relays, makes cage accurately rest in designated floor.In running, cage institute will be shown on 4 LED charactrons in time to number of floor levels and purpose number of floor levels.

The construction features of the present invention and beneficial effect:

1, this invention is for based on monolithic processor controlled arch type lifter, and this system hardware circuit is simple, and software function is flexible, it is simple to operation, maintenance, and full peace is reliable.

2, controller circuitry is relatively easy, it is relatively reliable to work, and design flexibility is very big

3, adopt single-chip microcomputer as controlling machine core, improve automaticity, effectively reduce cost of manufacture, reduce input.

4, control system have employed Phototube Coupling, has stronger interference rejection ability, it is ensured that the stability of work and the safety of personnel.

Accompanying drawing explanation

Fig. 1 is the system principle structure chart of the present invention；

Fig. 2 is the solid-state relay circuit theory of the present invention；

Fig. 3 is signal drive circuit schematic diagram；

Detailed description of the invention

Below in conjunction with accompanying drawing, principles of the invention and concrete annexation are described in more detail:

A kind of automatic floor-levelling controller of arch type lifter, its composition includes: position sensing part 1, segment count 2, multilevel iudge part 3, floor select part 4, preset number generation module 5 and output control module 6 to form, it is characterized in that: position sensor part is at some desired part of power transmission shaft, one counter code disc, the both sides of dish respectively light transmitter-receiver device are installed.During elevator duty, disk rotational, its actually rise rotating number of turns and angle and elevator has and directly contacts；The pulse received is counted by segment count；The count value of pulse and preset value are compared by multilevel iudge part, to determine stopping or opening of motor, upper or under；Floor selection part is a multikey self-lock switch, chooses first floor every time, after choosing floor, has also determined that preset number；The generation process of preset number: after elevator is installed for the first time or floor increases, first elevator manual mode is opened to this new floor, and carry out manual flat bed location, it is determined that after, press preset button, then the position of this floor is just memorized；Output control part: by the operating of optical coupler and Control motor.

In conjunction with the system principle structure chart that Fig. 1, Fig. 1 are the present invention；The present invention includes position sensing part, segment count, multilevel iudge part, floor selection part, preset number generating portion and output control part；The rising of elevator, declines, and the operation such as speed governing and parking is all sent control signal by control system, drives midget relay through Phototube Coupling and amplifying circuit.Control motor main control loop catalyst then through midget relay contact, complete corresponding action.

Fig. 2 is the solid-state relay circuit theory of the present invention；In the control system of elevator, with solid-state relay J1, J2, J3, control the rising of the lifting of elevator respectively, decline and stop.They are connected with tri-I/O mouths of P1.0, P1.1 and P1.3 of 8031 processors respectively.Owing to from 8031 processors, directly the signal code of output is too small, it is impossible to directly control solid-state relay, therefore to add control signal Phototube Coupling and amplification output circuit between I/O mouth and solid-state relay.

Fig. 3 is signal drive circuit schematic diagram.Output signal is amplified by signal, shaping circuit converts to and the digital signal of I/O channels be in accordance after processing, and is directly inputted the P3.4 mouth (the external pulse input port of T0 intervalometer) of 8031 single-chip microcomputers by input channel.Can calculate whether elevator arrives precalculated position by detecting the electric pulse number of output in the encoder unit interval.Native system adopts the LF-200-C12C type photoelectric encoder that Changchun No.1 optical Instrument Plant produces, and the way of output is open collector mode, is beneficial to follow-up signal and processes the design (load resistance and power supply can need to select according to task) of circuit.

Claims (1)

1. the automatic floor-levelling controller of an arch type lifter, its composition includes: position sensing part (1), segment count (2), multilevel iudge part (3), floor select part (4), preset number generation module (5) and output control module (6) composition, it is characterized in that: position sensor part is at some desired part of power transmission shaft, one counter code disc, the both sides of dish respectively light transmitter-receiver device are installed.During elevator duty, disk rotational, its actually rise rotating number of turns and angle and elevator has and directly contacts；The pulse received is counted by segment count；The count value of pulse and preset value are compared by multilevel iudge part, to determine stopping or opening of motor, upper or under；Floor selection part is a multikey self-lock switch, chooses first floor every time, after choosing floor, has also determined that preset number；The generation process of preset number: after elevator is installed for the first time or floor increases, first elevator manual mode is opened to this new floor, and carry out manual flat bed location, it is determined that after, press preset button, then the position of this floor is just memorized；Output control part: by the operating of optical coupler and Control motor.