CN203998673U - Tower crane electric-control system - Google Patents
Tower crane electric-control system Download PDFInfo
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- CN203998673U CN203998673U CN201420402871.1U CN201420402871U CN203998673U CN 203998673 U CN203998673 U CN 203998673U CN 201420402871 U CN201420402871 U CN 201420402871U CN 203998673 U CN203998673 U CN 203998673U
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- frequency converter
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Abstract
The utility model relates to automatic control technology, and it discloses a kind of novel tower crane electric-control system, solves the defect that the wiring of tower crane electric-control system is loaded down with trivial details, fault rate is high, difficult in maintenance, cost is high in conventional art.This system comprises joint action table handling device, external detection device, safety guard, RPEC electric controller able to programme, each functional circuit control desk, contactless switch, frequency converter, drg, variable-frequency motor; Described joint action table handling device, external detection device, safety guard access to the input interface of RPEC electric controller able to programme; The output interface of RPEC electric controller able to programme connects each functional circuit control desk; Joint action table handling device connects each functional circuit control desk; Described each functional circuit control desk connects frequency converter and contactless switch; Described contactless switch connects frequency converter and drg; Frequency converter is connected variable-frequency motor and described external detection device with drg.This electric-control system is applicable to tower crane.
Description
Technical field
The utility model relates to automatic control technology, particularly a kind of tower crane electric-control system.
Background technology
At present, the electric control project that each serial mechanism of domestic tower crane generally adopts has two kinds: a kind of is the traditional logic Electrical Control Technology realizing by low-voltage electrical elements such as various intermediate relays, time relay, contactless switchs; Another kind is the technology that the programmable logic controller (PLC) of extensive employing is now realized logic electrical control.The first control technology is simple, and economy is applicable to logic control simple, low-end product.Yet owing to having used a large amount of intermediate relays, time relay, may easily break down due to poor contact of contacts, simultaneously because wiring is loaded down with trivial details, be not easy looking up the fault point, to maintenance, bring difficulty.The second control technology can easily realize more complicated logic control, PLC software replacement time relay, only be left a small amount of hardware relevant with input and output, wiring can reduce to 1/10～1/100 of relay control system, the fault causing because of poor contact of contacts greatly reduces, and is applicable to high-end product; But this kind of mode need be used special programming software, specific store card, after not using for a long time or internal battery electric weight exhausts, easily causes loss of data, needs professional to safeguard, cost is higher.
Utility model content
Technical problem to be solved in the utility model is: propose a kind of novel tower crane electric-control system, solve the defect that the wiring of tower crane electric-control system is loaded down with trivial details, fault rate is high, difficult in maintenance, cost is high in conventional art.
The utility model solves the problems of the technologies described above adopted technical scheme:
Tower crane electric-control system, comprises joint action table handling device, external detection device, safety guard, RPEC electric controller able to programme, each functional circuit control desk, contactless switch, frequency converter, drg, variable-frequency motor; Described joint action table handling device, external detection device, safety guard access to the input interface of RPEC electric controller able to programme; The output interface of described RPEC electric controller able to programme connects each functional circuit control desk; Described joint action table handling device connects each functional circuit control desk; Described each functional circuit control desk connects frequency converter and contactless switch; Described contactless switch connects frequency converter and drg; Described frequency converter is connected variable-frequency motor and described external detection device with drg.
Concrete, described contactless switch comprises main contactor, electromagnetic braking control contactor.
Concrete, described each functional circuit control desk comprises that instruction regulates electroplax, circuit conditioning plate, OCB control desk.
Concrete, the input interface of described RPEC electric controller able to programme, output interface all adopt Connector Clip form to connect.
The beneficial effects of the utility model are:
1, compare with the logic control in traditional tower crane electrical control, RPEC electric controller integrated level able to programme is high, can replace hundreds of control relay, as: time relay, intermediate relay;
2, compare with most widely used PLC programmable logic controller, without special programming software, adaptable, function specific aim is higher; Without storage card, data are difficult for losing, and wiring is simpler, convenient;
3, RPEC electric controller able to programme has high reliability, stability; Vibration resistance, anti-electromagnetic interference capability are strong, and repetition period is short, and logical process speed is high;
4, RPEC electric controller able to programme has the soft and hardware of independent intellectual property right, has higher confidentiality;
5, RPEC electric controller able to programme is modular construction, takes up room little, and annex is few, installs economical simple;
6, RPEC electric controller able to programme can be realized mass, standardized production, thereby simplifies the periphery design of electrical control, allows design standard, and highly versatile, makes cost;
7, RPEC electric controller able to programme adopts connector to connect, once there be damage, directly new product is changed in plug, and maintenance is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is the tower crane electric-control system schematic diagram in the utility model.
The specific embodiment
The utility model is intended to propose a kind of novel tower crane electric-control system, solves the defect that the wiring of tower crane electric-control system is loaded down with trivial details, fault rate is high, difficult in maintenance, cost is high in conventional art.
Below in conjunction with drawings and Examples, scheme of the present utility model is further described:
As shown in Figure 1, the tower crane electric-control system in the utility model comprises joint action table handling device, external detection device, safety guard, RPEC electric controller able to programme, each functional circuit control desk, contactless switch, frequency converter, drg, variable-frequency motor; Described joint action table handling device, external detection device, safety guard access to the input interface of RPEC electric controller able to programme; The output interface of described RPEC electric controller able to programme connects each functional circuit control desk; Described joint action table handling device connects each functional circuit control desk; Described each functional circuit control desk connects frequency converter and contactless switch; Described contactless switch connects frequency converter and drg; Described frequency converter is connected variable-frequency motor and described external detection device with drg.
Wherein, described RPEC electric controller able to programme judges for the joint action table operation instruction signal that joint action table handling device is produced, the external detection signal that external detection device produces, the signal that safety guard produces the response fast of processing and act accordingly.In addition the part joint action table operation instruction signal that, described joint action table handling device produces is directly inputted into each functional circuit control desk.
Concrete, described external detection signal comprises frequency converter operating state signal, fault detection signal and frequency converter accessory overheating protection detection signal, drg detection signal.
Concrete, the signal that described safety guard produces comprises: the limiting device signal of tower machine mechanism, proving ring device signal and moment device signal.
Embodiment:
Take our company, in tower machine 60LVF lifting mechanism electrical control cabinet, to apply RPEC electric controller able to programme be example, and this electric control system comprises joint action table handling device, external detection device, safety guard, RPEC electric controller able to programme, each functional circuit control desk, contactless switch, frequency converter, drg, variable-frequency motor.
The signal that the external detection signal that the joint action table operation instruction signal that joint action table handling device produces, external detection device produce, safety guard produce is as the input interface of incoming signal access RPEC electric controller able to programme.Operational tower machine combined operation platform, action command input RPEC electric controller able to programme, by RPEC electric controller internal processes able to programme to joint action table operation instruction signal, external detection signal, corresponding quick action response is made in the judgement of safety guard signal, output action instruction is to each functional circuit control desk, each functional circuit control desk is further processed and regulates the output signal of RPEC electric controller able to programme, input instruction is to frequency converter function terminal and corresponding contact device, control the relevant work state of drg, thereby realize the rotating operation of variable-frequency motor, stop and each gear speed adjusting.
Before the instruction of RPEC electric controller output action, need be which kind of instruction at the joint action table operating order of internal processes judgement input; In external detection signal, judge whether frequency converter has fault output, whether has run signal output, and whether frequency converter accessory (brake unit) has overheating protection, drg opening signal etc. whether detected; In safety guard signal, need to judge that tower machine mechanism limiting device signal is whether in normally, whether moment device and proving ring device incoming signal be normal.After aforementioned all signals are judged fast, RPEC electric controller just can be exported command adapted thereto to each functional circuit control desk.
Circuit conditioning plate in each functional circuit control desk and OCB control desk the signal such as are opened to direction, fault, deceleration, operation, the braking of the output of RPEC electric controller able to programme and are amplified, process, and export respectively corresponding signal to frequency converter multifunction terminal and main contactor and electromagnetic braking control contactor; Instruction regulating plate is processed the analog signals of the gear signal of RPEC electric controller output able to programme and joint action table input.
Main contactor, electromagnetic braking control contactor and frequency converter obtain after corresponding operating instruction, control opening of drg, drive variable-frequency motor, thereby realize safety, the reliability service of whole mechanism.
Claims (4)
1. tower crane electric-control system, is characterized in that, comprises joint action table handling device, external detection device, safety guard, RPEC electric controller able to programme, each functional circuit control desk, contactless switch, frequency converter, drg, variable-frequency motor; Described joint action table handling device, external detection device, safety guard access to the input interface of RPEC electric controller able to programme; The output interface of described RPEC electric controller able to programme connects each functional circuit control desk; Described joint action table handling device connects each functional circuit control desk; Described each functional circuit control desk connects frequency converter and contactless switch; Described contactless switch connects frequency converter and drg; Described frequency converter is connected variable-frequency motor and described external detection device with drg.
2. tower crane electric-control system as claimed in claim 1, is characterized in that, described contactless switch comprises main contactor, electromagnetic braking control contactor.
3. tower crane electric-control system as claimed in claim 1 or 2, is characterized in that, described each functional circuit control desk comprises that instruction regulates electroplax, circuit conditioning plate, OCB control desk.
4. tower crane electric-control system as claimed in claim 1 or 2, is characterized in that, the input interface of described RPEC electric controller able to programme, output interface all adopt Connector Clip form to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402871.1U CN203998673U (en) | 2014-07-21 | 2014-07-21 | Tower crane electric-control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402871.1U CN203998673U (en) | 2014-07-21 | 2014-07-21 | Tower crane electric-control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203998673U true CN203998673U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420402871.1U Active CN203998673U (en) | 2014-07-21 | 2014-07-21 | Tower crane electric-control system |
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| CN (1) | CN203998673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828705A (en) * | 2015-05-14 | 2015-08-12 | 新兴铸管股份有限公司 | Crown block control device |
-
2014
- 2014-07-21 CN CN201420402871.1U patent/CN203998673U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828705A (en) * | 2015-05-14 | 2015-08-12 | 新兴铸管股份有限公司 | Crown block control device |
| CN104828705B (en) * | 2015-05-14 | 2016-09-14 | 新兴铸管股份有限公司 | A kind of control device of overhead traveling crane |
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