CN210457218U - Redundancy control device for crown block translation mechanism - Google Patents
Redundancy control device for crown block translation mechanism Download PDFInfo
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- CN210457218U CN210457218U CN201920275419.6U CN201920275419U CN210457218U CN 210457218 U CN210457218 U CN 210457218U CN 201920275419 U CN201920275419 U CN 201920275419U CN 210457218 U CN210457218 U CN 210457218U
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Abstract
The utility model relates to a redundant controlling means of overhead traveling crane translation mechanism inputs main dolly, vice dolly converter parameter and optimization at No. 2 cart converters and distinguishes, at overhead traveling crane electric beam installation redundant controlling means, when main, vice dolly translation mechanism converter breaks down, through switching redundant selector switch, can realize overhead traveling crane trouble translation mechanism's normal operating. The utility model discloses can realize that when certain translation mechanism converter breaks down and can not use under the condition that does not increase equipment investment basically, this translation mechanism still can continue the operation to the realization is to zero influence, the zero impact of production, and can not bring any equipment and potential safety hazard.
Description
Technical Field
The application belongs to the technical field of crown block electrical equipment and methods, and particularly relates to a redundancy control device of a crown block translation mechanism.
Background
In the steel-making production process of metallurgical enterprises, the transportation of production logistics and the lifting of equipment are generally realized by the lifting of a crown block. Due to the progress of control technology, the displacement of translation mechanisms such as a cart, a main trolley, an auxiliary trolley and the like of the overhead travelling crane is generally controlled by frequency conversion, the starting and the stopping are smooth, the impact on mechanical equipment is small, and the control precision is high. However, once the frequency converter fails, the processing difficulty is high, the processing time is long, the internal components of the frequency converter or the whole frequency converter need to be replaced, and the time is generally more than 3 hours. The production rhythm of a steel plant is very tight, and once a frequency converter of a certain translation mechanism has a problem, the impact on production caused by long-time shutdown processing is very large. Especially, the lifting object is suddenly damaged in the operation process, is positioned in the middle position which cannot be lifted up and down, and cannot be moved for a long time, so that the whole logistics can be blocked. It is urgently needed to find a method which can realize continuous operation of a translation mechanism after a translation mechanism frequency converter fails and cannot be used, and the problem is not considered in the design of the crown block in China at present and is not available in practical application.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a redundant controlling means of overhead traveling crane translation mechanism, can realize that when certain translation mechanism converter breaks down and can not use under the condition that does not increase equipment investment basically, this translation mechanism still can continue the operation to the realization is to zero influence, the zero impact of production, and can not bring any equipment and potential safety hazard.
In order to solve the above problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a redundant controlling means of overhead traveling crane translation mechanism, includes No. 2 cart normal operating relay normally open contact, main dolly relay normally open contact one, vice dolly relay normally open contact one, three position switch, main dolly relay normally open contact two, vice dolly relay normally open contact two that are connected respectively with circuit one end, wherein:
the normal operation relay normally open contact of the No. 2 cart, the normally open contact of the main trolley relay, the normally open contact of the auxiliary trolley relay are respectively connected with a gear contact of a main trolley master controller, a gear contact of the main trolley master controller and a gear contact of the auxiliary trolley master controller in series, the gear contact of the main trolley master controller and the gear contact of the auxiliary trolley master controller are all connected with an original control circuit of the No. 2 cart in series, and the normally open contact of the No. 2 cart, the normally open contact of the main trolley relay, the normally open contact of the auxiliary trolley relay and the other end of a circuit are correspondingly connected with a normal operation contactor of the No. 2 cart, a main trolley contactor and an auxiliary trolley contactor in series;
the three-position switch is connected with the interlocking protection device in series, and three phases of the interlocking protection device are correspondingly connected with the No. 2 cart normal operation relay, the main trolley relay and the auxiliary trolley relay in series and then are connected with the other end of the circuit;
the main trolley relay normally open contact II and the auxiliary trolley relay normally open contact II are respectively connected with the No. 2 trolley normal operation contactor three-phase normally open contact, the main trolley contactor three-phase normally open contact and the auxiliary trolley contactor three-phase normally open contact in series through the No. 2 trolley frequency converter, and the No. 2 trolley normal operation contactor three-phase normally open contact, the main trolley contactor three-phase normally open contact and the auxiliary trolley contactor three-phase normally open contact are correspondingly connected with the No. 2 trolley motor, the main trolley motor and the auxiliary trolley motor in series.
The utility model discloses technical scheme's further improvement lies in: the mounting position is arranged on the electric beam of the overhead crane.
The utility model discloses technical scheme's further improvement lies in: the interlocking protection device comprises a signal center, a program-controlled direct-current power supply and a power supply interlocking protection circuit, wherein the power supply interlocking protection circuit comprises 4 paths of low-power-consumption operational amplifiers LM 324; the +/-12V level signal of power interlock protection circuit input is provided by the signal maincenter, and the +/-5V level signal of power interlock protection circuit is provided by programme-controlled DC power supply voltage output: the +8V and +5V feedback control signals generated by the power supply interlocking protection circuit are output to the feedback ends of the +5V and +8V program control direct-current power supplies.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains is: the utility model discloses a preset main trolley motor parameter and vice dolly motor parameter at No. 2 cart converters to optimize and discern, at the redundant controlling means of electric roof beam installation, realize main dolly, when vice dolly translation mechanism converter breaks down and can not use, can pass through change over switch, realize main dolly, vice dolly translation mechanism's frequency conversion operation, realize zero impact, zero influence to the production, guaranteed the continuous operation of production. The maintenance time can be coordinated subsequently, and then the frequency converter of the fault mechanism can be maintained.
The utility model discloses can realize main dolly converter, vice dolly converter and break down the back, realize the fast switch-over through change over switch, after having avoided the converter trouble, the mechanism can not act, to the impact and the influence that production caused, has guaranteed the continuous operation of production. The normal operation of the crane fault translation mechanism can be realized. The influence on continuous production caused by the fact that a frequency converter of a certain translation mechanism fails and cannot act for a long time can be avoided, and the maximum economic benefit is generated. The utility model discloses can promote all install frequency conversion control's translation mechanism's overhead traveling crane on, small investment, practicality are strong, safe and reliable, and can promote the nature by force.
Drawings
Fig. 1 is a schematic structural diagram of a redundancy control apparatus according to the present invention;
fig. 2 is a schematic connection diagram of the programmable dc power supply of the present invention;
wherein:
1. normally open contact of relay for normal operation of No. 2 cart;
2. a three-position switch;
3. the original No. 2 cart control circuit;
4. an auxiliary trolley contactor;
5. a main trolley contactor;
6. an interlock protection device;
7. a sub-trolley relay;
8. a main trolley relay;
9. a relay for normal operation of the No. 2 cart;
10. the No. 2 cart normally runs the contactor;
11. a first normally open contact of a main trolley relay;
12. a normally open contact I of the auxiliary trolley relay;
13. a second normally open contact of the main trolley relay;
14. a second normally open contact of the auxiliary trolley relay;
15. a gear contact of a master controller of the cart;
16. a gear contact of a master car command controller;
17. a gear contact of a secondary small car master controller;
18. a No. 2 cart frequency converter;
19. the No. 2 cart normally runs the three-phase normally open contact of the contactor;
20. the main trolley contactor is a three-phase normally open contact;
21. the auxiliary trolley contactor is a three-phase normally open contact;
22. a No. 2 cart motor;
23. a main trolley motor;
24. and an auxiliary trolley motor.
Detailed Description
The present invention will be described in further detail with reference to examples.
The utility model provides a redundant controlling means of overhead traveling crane translation mechanism, refers to fig. 1 and fig. 2, includes No. 2 cart normal operating relay normally open contact 1, main dolly relay normally open contact 11, vice dolly relay normally open contact 12, three position switch 2, main dolly relay normally open contact two 13, vice dolly relay normally open contact two 14 that are connected respectively with circuit one end, wherein:
the normal operation relay normally open contact 1 of the No. 2 cart, the normally open contact I11 of the main trolley relay and the normally open contact I12 of the auxiliary trolley relay are respectively connected with a gear contact 15 of a main trolley command controller, a gear contact 16 of the main trolley command controller and a gear contact 17 of the auxiliary trolley command controller in series, the gear contact 15 of the main trolley command controller, the gear contact 16 of the main trolley command controller and the gear contact 17 of the auxiliary trolley command controller are all connected with an original control circuit 3 of the No. 2 cart in series, and the normally open contact 1 of the No. 2 cart normal operation relay, the normally open contact I11 of the main trolley relay, the normally open contact I12 of the auxiliary trolley relay and the other end of a circuit are correspondingly connected with a normal operation contactor 10 of the No. 2 cart, a main trolley contactor 5 and an auxiliary trolley contactor;
the three-position switch 2 is connected in series with an interlocking protection device 6, and three phases of the interlocking protection device 6 are correspondingly connected in series with a No. 2 cart normal operation relay 9, a main trolley relay 8 and an auxiliary trolley relay 7 and then connected with the other end of the circuit;
the main trolley relay normally open contact II 13, the auxiliary trolley relay normally open contact II 14 are respectively connected with the No. 2 trolley normal operation contactor three-phase normally open contact 19 in series through the No. 2 trolley frequency converter 18, the main trolley contactor three-phase normally open contact 20, the auxiliary trolley contactor three-phase normally open contact 21, the No. 2 trolley normal operation contactor three-phase normally open contact 19, the main trolley contactor three-phase normally open contact 20, the auxiliary trolley contactor three-phase normally open contact 21 is connected with the No. 2 trolley motor 22 in series, the main trolley motor 23 and the auxiliary trolley motor 24 in series.
The mounting position is arranged on the electric beam of the overhead crane.
Referring to fig. 2, the interlock protection device 6 comprises a signal center, a program-controlled direct-current power supply and a power supply interlock protection circuit, wherein the power supply interlock protection circuit comprises 4 paths of low-power-consumption operational amplifiers LM 324; the +/-12V level signal of power interlock protection circuit input is provided by the signal maincenter, and programme-controlled DC power supply is three, is programme-controlled DC power supply 1, programme-controlled DC power supply 2, programme-controlled DC power supply 3 respectively, and power interlock protection circuit's +/-5V level signal is provided by programme-controlled DC power supply voltage output: the +8V and +5V feedback control signals generated by the power supply interlocking protection circuit are output to the feedback ends of the +5V and +8V program control direct-current power supplies.
A kind of overhead traveling crane translation mechanism redundant control method, has utilized the above-mentioned redundant controlling device, there are two frequency converters that can be controlled independently in the cart translation mechanism of the overhead traveling crane, 1 cart frequency converter used for controlling the cart translation mechanism to run separately, 2 cart frequency converters 18 used for controlling the translation mechanism of the main trolley and translation mechanism of the auxiliary trolley to run, can set up the characteristic of the parameter of the multiunit electrical machinery with the frequency converter, input the main trolley and frequency converter parameter of the auxiliary trolley and optimize and distinguish in 2 cart frequency converter 18, when the frequency converter of the main trolley or frequency converter of the auxiliary trolley breaks down, realize the automatic switch of the electrical machinery parameter, automatic switch of the control command, output automatic switch through the redundant controlling device.
The redundancy control method comprises the following specific steps:
step a, setting the 2 nd set of motor parameters of the No. 2 cart frequency converter 18 as the main trolley motor parameters and optimizing and identifying, and setting the 3 rd set of motor parameters of the No. 2 cart frequency converter as the auxiliary trolley motor parameters and optimizing and identifying;
b, when the main trolley frequency converter fails and cannot be used, selecting the main trolley through a redundancy control device, switching 18 motor parameters of the No. 2 cart frequency converter to the motor parameters of the main trolley, switching a gear signal control command of a main trolley command controller to 18 input of the No. 2 cart frequency converter, switching 18 output of the No. 2 cart frequency converter to a main trolley motor, and operating the main trolley command controller again to ensure that the No. 2 cart frequency converter 18 works to drive the main trolley motor to work, so that the action of a main trolley translation mechanism is realized;
and c, when the auxiliary trolley frequency converter fails and cannot be used, selecting the auxiliary trolley through the redundancy control device, switching the motor parameter of the No. 2 cart frequency converter 18 to the motor parameter of the auxiliary trolley, switching the gear signal control command of the auxiliary trolley master command controller to the input of the No. 2 cart frequency converter 18, switching the output of the No. 2 cart frequency converter 18 to the motor of the auxiliary trolley, and operating the auxiliary trolley master command controller to drive the auxiliary trolley motor to work by the No. 2 cart frequency converter so as to realize the action of the auxiliary trolley translation mechanism.
Considering that the capacity of a single frequency converter of a crane cart mechanism is larger than the capacity of a main trolley frequency converter and the capacity of an auxiliary trolley frequency converter, one frequency converter of two frequency converters of a cart can drive the whole cart mechanism to operate independently, so that when the main trolley frequency converter or the auxiliary trolley frequency converter fails, the cart mechanism can be driven to operate by the cart frequency converter No. 1, the main trolley mechanism or the auxiliary trolley mechanism can be driven to operate by the cart frequency converter No. 2, and an additional main trolley frequency converter and an auxiliary trolley frequency converter are not needed, thus saving hundreds of thousands of expenses, and the crane cart has no position installation due to the limitation of the space of an electric beam of the crane. Through the research to the converter, can through predetermineeing main dolly motor, vice dolly motor parameter at No. 2 cart converters to optimize and discern, carry out the motor parameter selection and set for at No. 2 cart converters, install redundant control device at electric roof beam. When the main trolley frequency converter or the auxiliary trolley frequency converter breaks down, the automatic switching of motor parameters, the automatic switching of control commands and the automatic switching of output can be realized through the switch. Therefore, one-key switching of the fault translation mechanism is realized, each mechanism normally operates, and zero influence on production is realized.
Fig. 1 shows, the utility model discloses a redundancy control device includes No. 2 cart normal operating relay normally open contact 1, three position switch (No. 2 cart, the main dolly, vice dolly) 2, vice dolly contactor 4, main dolly contactor 5, interlocking protection device 6, vice dolly relay 7, main dolly relay 8, No. 2 cart normal operating relay 9, No. 2 cart normal operating contactor 10, main dolly relay normally open contact one 11, vice dolly relay normally open contact one 12, main dolly relay normally open contact two 13, vice dolly relay normally open contact two 14, cart owner makes controller gear contact 15, main dolly owner makes controller gear contact 16, vice dolly owner makes controller gear contact 17, No. 2 cart normal operating contactor normally open contact 19, main dolly contactor three-phase normally open contact 20, vice dolly three-phase normally open contact 21.
Fig. 1 shows that the selection of the relay 9 for normal operation of the No. 2 cart, the relay 8 for the main trolley or the relay 7 for the auxiliary trolley can be realized through the three-position switch 2 of the No. 2 cart, the main trolley and the auxiliary trolley through the interlocking protection device 6.
Fig. 1 shows that the input loop of the original No. 2 cart control circuit 3 includes 3 branches connected in parallel: the first branch circuit comprises a No. 2 cart normal operation relay normally open contact 1 and a cart master controller gear contact 15 which are connected in series, the second branch circuit comprises a main trolley relay normally open contact 11 and a main trolley master controller gear contact 16 which are connected in series, and the third branch circuit comprises an auxiliary trolley relay normally open contact 12 and an auxiliary trolley master controller gear contact 17 which are connected in series.
Fig. 1 shows that a No. 2 cart normal operation relay normally open contact 1 is connected with a No. 2 cart normal operation contactor 10 coil in series. And a first normally open contact 11 of the main trolley relay is connected with a coil of the main trolley contactor 5 in series. And the auxiliary trolley relay normally open contact I12 is connected with the auxiliary trolley contactor 4 in series.
Fig. 1 shows that the input loop of the 2 # cart frequency converter 18 comprises 2 branches: and a second normally open contact 13 of the first branch main trolley relay and a second normally open contact 14 of the second branch auxiliary trolley relay. No. 2 cart converter 18 output circuit includes 3 tributaries: a three-phase normally open contact 19 of a contactor for normal operation of a No. 2 cart in a first branch is connected with a No. 2 cart motor 22 in series, a three-phase normally open contact 20 of a main trolley contactor in a second branch is connected with a main trolley motor 23 in series, and a three-phase normally open contact 21 of an auxiliary trolley contactor in a third branch is connected with an auxiliary trolley motor 24 in series.
The utility model discloses a redundancy control method of overhead traveling crane translation mechanism, it adopts the following step to go on (taking siemens 6SE70 series converter as an example):
a. the characteristic that the frequency converter can be used for setting a plurality of groups of motor parameters is utilized, the 2 nd set of motor parameters of the No. 2 cart frequency converter are set as the main trolley motor parameters and are optimally identified, and the 3 rd set of motor parameters of the No. 2 cart frequency converter are set as the auxiliary trolley motor parameters and are optimally identified.
b. Four parameters are set on the control panel of the No. 2 cart frequency converter 18: p669.1=0, P669.2=0,
P578=5107, P579=5105, a second main trolley relay normally open contact 13 and a second auxiliary trolley relay normally open contact 14 are respectively connected to the input of the X39, X43, X39 and X44 terminals of a No. 2 trolley frequency converter EB1 to realize the selection of motor parameters.
c. The redundancy control device collects input signals: a three-position switch (No. 2 cart, main trolley and auxiliary trolley) 2, a cart master controller gear contact 15, a main trolley master controller gear contact 16 and an auxiliary trolley master controller gear contact 17; outputting a control signal: the contactor comprises a No. 2 cart normal operation contactor three-phase normally open contact 19, a main trolley contactor three-phase normally open contact 20 and an auxiliary trolley contactor three-phase normally open contact 21.
d. When the frequency converter of the main trolley and the frequency converter of the auxiliary trolley break down, the normal operation of a fault mechanism can be realized by switching the three-position switch 2 of the No. 2 cart, the main trolley and the auxiliary trolley.
The utility model discloses be applied to behind the precious steel plant of Handrail Handan, after certain translation mechanism converter goes wrong, through switching "cart No. 2, main dolly, vice dolly" switch, realize the normal use of overhead traveling crane, avoided long-time shutdown to handle the influence to production, avoided the interrupt of continuous production, realized the zero influence to production.
The utility model discloses can use all use the converter to carry out the overhead traveling crane of translation mechanism control, especially the overhead traveling crane on the continuous operation production line, through implementing this patent, can realize realizing the biggest productivity effect to the zero influence of production. The utility model discloses the input is few, and can promote the nature strong, can realize the continuous operation of overhead traveling crane equipment under the condition that does not increase the input basically, realizes the zero influence to production, realizes the benefit maximize.
Taking a steel plant as an example, 30 crown blocks are installed, and the patent is implemented completely, two frequency converters are saved for one car, the equipment investment cost is saved by 11 ten thousand yuan, and the equipment investment cost can be saved by 330 ten thousand yuan for 30 cars. According to every car can reduce 2 influences annually, influence time is calculated according to 3 hours every time, and the benefit of every hour is calculated according to 3000 yuan, then the benefit that 30 overhead traveling cranes produced in one year is: 2 x3 x 3000 x 30=540000 yuan. If the accident caused by the fault influence of the crown block translation mechanism stops casting, the accident loss generated at one time is up to dozens of ten thousand yuan.
Claims (3)
1. The utility model provides a redundant controlling means of overhead traveling crane translation mechanism which characterized in that: including No. 2 cart normal operating relay normally open contact (1), main dolly relay normally open contact (11), vice dolly relay normally open contact (12), three position switch (2), main dolly relay normally open contact two (13), vice dolly relay normally open contact two (14) of being connected respectively with circuit one end, wherein:
a normally-operated relay normally-open contact (1) of a No. 2 cart, a normally-open contact I (11) of a main trolley relay and a normally-open contact I (12) of an auxiliary trolley relay are respectively connected in series with a master controller gear contact (15), a master controller gear contact (16) of the main trolley and a slave controller gear contact (17), the gear contact (15) of the master car command controller, the gear contact (16) of the master car command controller and the gear contact (17) of the auxiliary car command controller are all connected in series with the original control circuit (3) of the No. 2 master car, a No. 2 cart normal operation contactor (10), a main trolley contactor (5) and an auxiliary trolley contactor (4) are correspondingly connected in series between a No. 2 cart normal operation relay normally open contact (1), a main trolley relay normally open contact (11), an auxiliary trolley relay normally open contact (12) and the other end of the circuit;
the three-position switch (2) is connected with the interlocking protection device (6) in series, and three phases of the interlocking protection device (6) are correspondingly connected with the No. 2 cart normal operation relay (9), the main trolley relay (8) and the auxiliary trolley relay (7) in series and then are connected with the other end of the circuit;
the main trolley relay normally open contact II (13) and the auxiliary trolley relay normally open contact II (14) are correspondingly connected in series with a No. 2 trolley normal operation contactor three-phase normally open contact (19), a main trolley contactor three-phase normally open contact (20), an auxiliary trolley contactor three-phase normally open contact (21) through a No. 2 trolley frequency converter (18), the No. 2 trolley normal operation contactor three-phase normally open contact (19), the main trolley contactor three-phase normally open contact (20), the auxiliary trolley contactor three-phase normally open contact (21) are correspondingly connected in series with a No. 2 trolley motor (22), a main trolley motor (23) and an auxiliary trolley motor (24).
2. The crown block translation mechanism redundancy control device according to claim 1, characterized in that: the mounting position is arranged on the electric beam of the overhead crane.
3. The crown block translation mechanism redundancy control device according to claim 2, characterized in that: the interlocking protection device (6) comprises a signal center, a program-controlled direct-current power supply and a power supply interlocking protection circuit, wherein the power supply interlocking protection circuit comprises 4 paths of low-power-consumption operational amplifiers LM 324; the +/-12V level signal of power interlock protection circuit input is provided by the signal maincenter, and the +/-5V level signal of power interlock protection circuit is provided by programme-controlled DC power supply voltage output: the +8V and +5V feedback control signals generated by the power supply interlocking protection circuit are output to the feedback ends of the +5V and +8V program control direct-current power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920275419.6U CN210457218U (en) | 2019-03-05 | 2019-03-05 | Redundancy control device for crown block translation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920275419.6U CN210457218U (en) | 2019-03-05 | 2019-03-05 | Redundancy control device for crown block translation mechanism |
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| Publication Number | Publication Date |
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| CN210457218U true CN210457218U (en) | 2020-05-05 |
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| CN201920275419.6U Expired - Fee Related CN210457218U (en) | 2019-03-05 | 2019-03-05 | Redundancy control device for crown block translation mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867206A (en) * | 2019-03-05 | 2019-06-11 | 邯郸钢铁集团有限责任公司 | Overhead traveling crane translation mechanism redundancy control apparatus and method |
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2019
- 2019-03-05 CN CN201920275419.6U patent/CN210457218U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867206A (en) * | 2019-03-05 | 2019-06-11 | 邯郸钢铁集团有限责任公司 | Overhead traveling crane translation mechanism redundancy control apparatus and method |
| CN109867206B (en) * | 2019-03-05 | 2024-06-11 | 邯郸钢铁集团有限责任公司 | Crown block translation mechanism redundancy control device and method |
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Granted publication date: 20200505 Termination date: 20210305 |