A kind of trestle crane model
Technical field
The utility model relates to a kind of model equipment, relates in particular to a kind of trestle crane model.
Background technology
Crane is widely applicable for modern factories, bulk cargo terminals and container yard and warehouse dispatching operation as a kind of delivery vehicle.
At first, the teaching research of crane control system is in scientific research institutions, institution of higher learning's research field, owing to reasons such as research place, funds, can not carry out the research of control system with real crane, mainly study by simulation software, the virtual image and the service data that produce are all had any different with real system, more have no idea to realize a certain characteristic test, and to reach every data under the crane actual motion state, be convenient to study more intuitively, this just requires to set up a crane practical operation model.
Secondly, the more new development of crane is an outstanding feature with the usability that improves crane.Traditional crane speed governing adopts coiling electric motor rotor crosstalk resistance to carry out speed governing mostly, the characteristics of this control mode are: the velocity variations amplitude that load variations causes is bigger, and mechanical property is very soft, and low speed can not long-play, speed is wayward, and different gear velocity variations are very big.Frequency control is a speed-regulating scheme comparatively desirable in the AC speed regulating, can realize stepless speed regulation, and speed mechanical characteristics at different levels are very hard, heavy-duty low-speed starting and stable and reliable operation, and it is quite steady that the setting of acceleration and deceleration time makes each grade play retro-speed.Has high control precision.Utilize the good speed adjusting performance of frequency converter, development is the electric control system of core with the microprocessor, and crane just can obtain good speed governing and static and dynamic performance.
Moreover engineering goods need to update, and in the computer nowadays technology, in the epoch of automatic control technology and digital display technology high speed development, the important symbol of update is to realize the electromechanical integration of product.Applied Computer Techniques on hoisting machinery can improve the performance of operation, increases security, so that realize unmanned operation automatically.In the commercial production, for boosting productivity and improving the quality of products, sometimes require crane can be quicker, accurately, stably the means of production are transported to the production site, for example the singularity of steelworks pouring molten steel workshop condition requires a kind of walking fast and stable of development, and the location accurately, the crane travel mechanism of braking quick and stable, to improve the throughput rate of steel-making, reduce breakdown rate, alleviate the workload of plant maintenance.
Existing crane model only rests on model to be showed, and the fuselage material is iron and steel welding or plastic material substantially, practicality, stability and aesthetic property all have certain defective, do not apply to teaching or experimental mode of operation, what do not have the deep structure research control system is the energy index, this machine model can solve problems such as colleges and universities' crane notion when crane control system is imparted knowledge to students is not concrete, and data parameters is inaccurate.
The utility model content
The purpose of this utility model provides a kind of trestle crane model, with emulation test demands such as the teaching research that satisfies crane control system and research and production.
For achieving the above object, the utility model adopts following technical scheme: a kind of trestle crane model comprises the operator's console that has the aluminium section bar mounting bracket that chute is installed and have liquid crystal display and action button; Described mounting bracket upper edge chute is equipped with aluminium section bar gate-type cart model frame, and the bottom of described cart model frame is equipped with the cart molded motor, and cart model frame top is equipped with little vehicle model and dolly molded motor; Be equipped with hoist model mechanism and main lifting motor thereof on the described little vehicle model; Described cart molded motor, dolly molded motor and main lifting motor are all corresponding separately to be connected with a Frequency Converter Control with a PLC controller, and the gear-shift mechanism of cart molded motor, dolly molded motor and main lifting motor is connected a photoelectric encoder respectively; The signal input part control linkage of the signal output part of each photoelectric encoder and corresponding PLC controller; The inverter communication that described each PLC controller and liquid crystal display are corresponding with it is connected; The all corresponding and pilot lamp control linkage of described big vehicle model, little vehicle model and the model mechanism that hoists.
Described operator's console is provided with intelligent brushing card device.
Model system fuselage of the present utility model adopts aluminium section bar, has very hard mechanical property and very strong anti-load disturbance ability, will make operation more simple and reliable according to the crane automatic control system of this model formation, well and can alleviate the workload of maintenance greatly.This model can solve problems such as colleges and universities' crane notion when crane control system is imparted knowledge to students is not concrete, and data parameters is inaccurate; Control system adopts PLC controller and inverter communication, have operate steadily, data are true and reliable, lifetime of system is long, trouble hunting is convenient and many characteristics such as intellectualized operation mode, can satisfy the requirement of locality work under danger, complex environment, be in a leading developing direction in the crane industry, and will drive crane and develop to high intelligence control system direction.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model operator's console;
Fig. 3 is the side view of Fig. 1;
Fig. 4 is a control principle synoptic diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is described further.
As Fig. 1~Figure 3 shows that the utility model trestle crane structure of models synoptic diagram, as seen from the figure, this model comprises and has aluminium section bar mounting bracket 1 and the operator's console 2 that chute is installed; The mounting bracket upper edge is installed chute and is equipped with aluminium section bar gate-type cart model frame 3, and the bottom of cart model frame is equipped with cart molded motor 4, and cart model frame top is equipped with little vehicle model and dolly molded motor 5; Be equipped with hoist model mechanism and main lifting motor 6 thereof on the little vehicle model; Cart molded motor 4, dolly molded motor 5 and main lifting motor 6 are all corresponding separately to be connected with a Frequency Converter Control with a PLC controller, and the gear-shift mechanism of cart molded motor, dolly molded motor and main lifting motor is connected a photoelectric encoder respectively; The signal input part control linkage of the signal output part of each photoelectric encoder and corresponding PLC controller; Each PLC controller is connected with the self-corresponding inverter communication of Qi Ge with liquid crystal display 10 on the operator's console; In addition, all corresponding and pilot lamp 7 control linkages of big vehicle model, little vehicle model and the model mechanism that hoists.
Trestle crane model fuselage of the present utility model adopts aluminium section bar, and whole body is without any pad, and the junction all connects with right-angle connector, has not only guaranteed the firm of trestle crane model integral body, and attractive in appearance.Each motor adopts east, Taiwan power product, control system adopts Siemens PLC C controller as arithmetic element, the ABB frequency converter is as control module, control the line position of walking of trestle crane, the traveling of big vehicle model and little vehicle model is controlled according to the mode of two-dimensional coordinate, big vehicle model, the little vehicle model and the model mechanism that hoists adopt a frequency converter to carry out frequency control respectively, the photoelectric encoder that is positioned at the motor gear place carries out the detection and the feedback of position, the feedback signal that will test the speed is delivered to the PLC controller, finish the PID closed-loop control of rotating speed by PLC, positional information is realized by the PLC system, constitute a pinpoint servomechanism.The PLC system carries out fault detect and alarm indication simultaneously, guaranteed that the trestle crane model is according to the track reliability service, realize three-shaft linkage during operation, all there is the pilot lamp 7 of respective color in each model mechanism, not only serve as warning, can also pick out which mechanism in operation, the route intelligence operation that operation can be formulated with manual stepless time adjustment rocking bar or follow procedure, the rocking bar on the control desk left side is controlled the operation of big dolly, can can move large and small vehicle model walking simultaneously according to the operation requirement, control the lifting of the model mechanism that hoists; Automatic operation mode can be selected corresponding programs according to the weight running orbit, can finish in the manual click in the liquid crystal display place of man-machine interface, also can select different operating rates according to weights different on suspension hook 8, the position that can on liquid crystal display, show big dolly and lifting mechanism, parameters such as the frequency of each motor, voltage, rotating speed can accomplish to locate fast and accurately.
Also be provided with intelligent brushing card device 9 on the operator's console, under the emergency circumstance, can press the scram button deenergization, the intelligence brushing card device provides the source of power supply, only after smart card inserts draw-in groove, the trestle crane model just can obtain power supply, there is operating personnel's information in the card, just with the use more informationization of whole trestle crane model.
Model system of the present utility model has very hard mechanical property and very strong anti-load disturbance ability, and the crane automatic control system that constitutes according to this model will make operation more simple and reliable, well and can alleviate the workload of maintenance greatly.This model can solve problems such as colleges and universities' crane notion when crane control system is imparted knowledge to students is not concrete, and data parameters is inaccurate; Control system adopts PLC controller and inverter communication, have operate steadily, data are true and reliable, lifetime of system is long, trouble hunting is convenient and many characteristics such as intellectualized operation mode, can satisfy the requirement of locality work under danger, complex environment, be in a leading developing direction in the crane industry, and will drive crane and develop to high intelligence control system direction.