CN207330191U - A kind of swing mechanism using rcv controllers - Google Patents
A kind of swing mechanism using rcv controllers Download PDFInfo
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- CN207330191U CN207330191U CN201721128816.8U CN201721128816U CN207330191U CN 207330191 U CN207330191 U CN 207330191U CN 201721128816 U CN201721128816 U CN 201721128816U CN 207330191 U CN207330191 U CN 207330191U
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- rcv
- controllers
- swing mechanism
- potentiometer
- thyristor
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Abstract
The utility model discloses a kind of swing mechanism using rcv controllers, for in tower ground jack, include power control cabinet, and it is installed on thyristor module, torque motor and retarder in power control cabinet, and the rcv rotation controllers that output terminal is connected with thyristor module, and output terminal be connected with rcv rotation controllers, crane control desk with potentiometer, the thyristor module, torque motor and retarder are sequentially connected, the thyristor module is using three groups of 12 thyristor groups of SKKT92 into the rcv rotation controllers are interior to be equipped with CD2 31K connectors；This greatly reduces the maintenance of equipment using the swing mechanism of rcv controllers, reduces the pollution to power grid, compared with traditional industrial frequency control tower crane, reduce mechanical loss, contracting brake mechanism reliable in action, high speed enhanced feature shorten the work period, improve work efficiency.
Description
Technical field
The utility model belongs to more particularly to a kind of swing mechanism using rcv controllers.
Background technology
With the continuous development of Building Trade in China, the continuous improvement of construction machineization level, the manufacture matter to tower crane
The requirement of amount and its technical level is also higher and higher.Control mode, control system used by each transmission mechanism of tower crane
Technical merit, the operability of user and the maintainable technical merit and class for substantially just embodying whole tower crane.And
In these mechanisms, mostly important is also that most technology is representational is lifting mechanism, it is controlled, and power is maximum, speed governing model
Enclose it is most wide, be out of order after maintenance difficulty it is also maximum.And the system will in the size of mechanical shock caused by speed-change process
Directly affect the fatigue damage degree of tower crane structural member.
In order to improve its performance, domestic each host manufacturer has spent many works in the speed regulating control technology of lifting mechanism
Husband, has obtained significant progress.See on the whole, it is most to be driven using traditional single motor, with band eddy-current brake
Based on the winding motor of device and the scheme of multipolar dynamo speed governing.These traditional speed-regulating schemes, to reach wider speed governing
Scope, its approach is nothing more than high-power, wide speed regulating range nonstandard motor is manufactured and designed, such as：Using with the more of eddy-current brake
Pole winding motor makes big very poor multispeed electric machine etc..Due to the required higher speed governing requirement of Lift Mechanism in Power Hoist not only
More quality control problem is brought to motor production firm, and also increases control loop and the manufacture cost of motor,
Reduce system reliability.What is more, and as crane capacity requirement of the user to tower crane is increasing, traditional control method is
Unable to do what one wishes through increasingly feeling, the whether realizability of above-mentioned technology, it manufactures cost and performance etc.
There is also some problems.
Utility model content
The purpose of this utility model is to provide a kind of maintenance for greatly reducing equipment, reduces the pollution to power grid, with
Traditional industrial frequency control tower crane is compared, and reduces mechanical loss, contracting brake mechanism reliable in action, and high speed enhanced feature shortens work week
Phase, the swing mechanism using rcv controllers improved work efficiency.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of swing mechanism using rcv controllers, in tower ground jack, including power control cabinet, and be installed on electricity
Thyristor module, torque motor and the retarder in cabinet, and the rcv rotation controllers that output terminal is connected with thyristor module are controlled,
And output terminal be connected with rcv rotation controllers, crane control desk with potentiometer, the thyristor module, torque motor
It is sequentially connected with retarder, the thyristor module uses three groups of SKKT92-12 thyristor groups into the rcv rotation controllers
It is interior to be equipped with CD2-31K connectors.
Preferably, the rcv rotation controllers are connected with the left-handed switch of revolution and revolution dextrorotation via CD2-31K connectors
Switch.
Preferably, the rcv rotation controllers are connected with luffing brake module and rotary braking via CD2-31K connectors
Module.
Preferably, the resistance value of the potentiometer is 5 kilo-ohms or 10 kilo-ohms.
Preferably, the potentiometer includes four taps, wherein three taps in dense distribution and three taps
There are two both ends for being potentiometer, the centre cap that another is potentiometer.
The utility model has the technical effect that following aspect：Using frequency converter open loop type of drive, pass through
The regenerative braking of variable frequency regulating speed control mouse cage variable-frequency motor system and eddy-current brake smoothly stop the swing mechanism in movement,
Avoid the shake of tower arm, the fluid coupling in mechanical structure can be substituted with frequency converter, save cost.
Brief description of the drawings
Fig. 1 is a kind of loop control theory figure of swing mechanism using rcv controllers of the utility model；
Fig. 2 is a kind of crane control desk gear corresponding diagram of swing mechanism using rcv controllers of the utility model；
Fig. 3 is a kind of potentiometer structure chart of swing mechanism using rcv controllers of the utility model；
Fig. 4 is a kind of CD2-31K connector structure figures of swing mechanism using rcv controllers of the utility model；
Fig. 5 is a kind of electrical schematic diagram of swing mechanism using rcv controllers of the utility model；
Fig. 6 is that a kind of rcv controllers of swing mechanism using rcv controllers of the utility model show with thyristor wiring
It is intended to.
Embodiment
In the present embodiment, it is to be understood that term " centre ", " on ", " under ", " top ", " right side ", " left end ",
" top ", " back side ", " middle part ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, only
Be for the ease of describing the utility model, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In addition, the connection between component or fixed form if not otherwise specified in this embodiment, it is connected or solid
It can be to be fixed by bolt commonly used in the prior art or pin is fixed to determine mode, or the mode such as axis pin connection, therefore, at this
No longer it is described in detail in embodiment.
Embodiment
As shown in figs. 4-6, a kind of swing mechanism using rcv controllers, in tower ground jack, including automatically controlled
Cabinet, and thyristor module, torque motor and the retarder being installed in power control cabinet, and output terminal are connected with thyristor module
Rcv rotation controllers, and output terminal be connected with rcv rotation controllers, crane control desk with potentiometer, the thyristor
Module, torque motor and retarder are sequentially connected, and the thyristor module uses three groups of SKKT92-12 thyristor groups into three-phase
Ac circuit uses three groups of SKKT92-12 thyristors, and every rated current is 92 peaces, pressure-resistant 1200 volts reverse；Adopt in vortex circuit
With one group of MFA60-02 thyristor, rated current 60 is pacified, reversely pressure-resistant 200 volts.In the system application, three groups of SKKT92-12
A2, K1 of thyristor module will use electric wire short circuit thick enough.CD2-31K connectors are equipped with the rcv rotation controllers,
CD2-31K is the connector of 31 pins, is divided into tri- row of A, B, C, and wherein two rows of each 10 pins of A, C, B arranges 11 pins.RCV controllers are adopted
With A, C two rows totally 20 pin.CD2-31K connected all wiring of rcv rotation controllers and external equipment originally, but in order to increase
Creepage distance, separates three-phase power line from this connector, and specific numbering is A8, A9, A10 and C8, C9, C10, is separately connected to one
On larger connector JWD4-4.The rcv rotation controllers are connected with the left-handed switch of revolution and revolution via CD2-31K connectors
Dextrorotation switchs, and the rcv rotation controllers are connected with luffing brake module and rotary braking module via CD2-31K connectors.
As shown in fig.3, the resistance value of the potentiometer is 5 kilo-ohms or 10 kilo-ohms, there are four taps, wherein three taps
It is closely spaced.Independent tap is ground terminal, there is two both ends for being potentiometer in three taps, another is the center of potentiometer
Tap.The visible potentiometer bottom diagram of concrete meaning of each terminal of potentiometer.For a single potentiometer only, if can not differentiate each
Tap, each endpoint is mutually measured with universal meter ohms range two-by-two, can find out the resistance value between an endpoint and another two endpoint
Just it is the half (from the influence of center axis rotation) of potentiometer total resistance value, this endpoint, that is, ground terminal, and another two end
Point is the both ends of potentiometer, is left tap terminals centered on that endpoint.
Whole system is by rcv rotation controllers, thyristor module, power control cabinet, the crane control desk with potentiometer, torque
Motor, retarder etc. form.When crane control desk handle operates, potentiometer is driven, a mould is exported to rcv rotation controllers
Intend signal.Control the triggering and conducting angle of three-phase alternating voltage and the triggering and conducting angle of eddy current voltage.Trigger each group thyristor mould
Block exports different voltage.Wherein, a pair of of line voltage of three-phase output voltage feeds back to controller and forms closed-loop control, to improve
The stability of system.Operation principle can refer to shown in Fig. 1.
From zero-bit to maximum position, a corresponding rolling contact device is attracted crane control desk handle, eddy current voltage from
Direct current 20V is linearly reduced to 0V, and three-phase alternating voltage is upgraded to 140V, 260V, 300V, 340V and maximum voltage (maximum electricity from 0V
Pressure is determined by three-phase input voltage and the angle of flow).For crane control desk handle from maximum position to zero-bit, situation is just opposite.
Handle is operated toward other direction, and another contactor is attracted, and other situations are the same.With reference to shown in Fig. 2.
It is as follows to turn round mode of operation：
It is controlled by the handle on left joint action table, when left-hand rotation turns left handle sidewards pulls, during right-hand rotation by handle sidewards
Turn right and pull；Revolution operation belongs to stepless speed regulation without gear.
The normally closed brake that swing mechanism is carried using motor is braked or is declutched, normally closed when swing mechanism is run
Formula brake declutches, and when swing mechanism is out of service, normally closed brake postpones several seconds brake sticking brakes.Under special circumstances
Need mechanically releasing of brake.Such as：1st, the normal 20V power supplies of rotary braking coil are faulty, and brake is not opened, and is hung
Hook weight is badly in need of movement.2nd, rotary system runs into more than 7,8 grades strong wind when stopping using, and to prevent standard knot from damaging, needs pine
Brake allows tower crane freely to turn round.
The utility model has the technical effect that following aspect：Using frequency converter open loop type of drive, pass through
The regenerative braking of variable frequency regulating speed control mouse cage variable-frequency motor system and eddy-current brake smoothly stop the swing mechanism in movement,
Avoid the shake of tower arm, the fluid coupling in mechanical structure can be substituted with frequency converter, save cost.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work, should be covered within the scope of the utility model.
Claims (5)
- A kind of 1. swing mechanism using rcv controllers, in tower ground jack, it is characterised in that：Include power control cabinet, and Thyristor module, torque motor and the retarder being installed in power control cabinet, and the rcv revolutions that output terminal is connected with thyristor module Controller, and output terminal be connected with rcv rotation controllers, crane control desk with potentiometer, the thyristor module, power Torque motor and retarder are sequentially connected, and the thyristor module is using three groups of SKKT92-12 thyristor groups into the rcv is turned round CD2-31K connectors are equipped with controller.
- 2. the swing mechanism according to claim 1 using rcv controllers, it is characterised in that：The rcv rotation controllers The left-handed switch of revolution and revolution dextrorotation switch are connected with via CD2-31K connectors.
- 3. the swing mechanism according to claim 2 using rcv controllers, it is characterised in that：The rcv rotation controllers Luffing brake module and rotary braking module are connected with via CD2-31K connectors.
- 4. the swing mechanism according to claim 3 using rcv controllers, it is characterised in that：The resistance value of the potentiometer For 5 kilo-ohms or 10 kilo-ohms.
- 5. the swing mechanism according to claim 4 using rcv controllers, it is characterised in that：The potentiometer includes Four taps, wherein three taps in have in dense distribution and three taps two both ends for being potentiometer, another be current potential The centre cap of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721128816.8U CN207330191U (en) | 2017-09-05 | 2017-09-05 | A kind of swing mechanism using rcv controllers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721128816.8U CN207330191U (en) | 2017-09-05 | 2017-09-05 | A kind of swing mechanism using rcv controllers |
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| Publication Number | Publication Date |
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| CN207330191U true CN207330191U (en) | 2018-05-08 |
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| CN201721128816.8U Active CN207330191U (en) | 2017-09-05 | 2017-09-05 | A kind of swing mechanism using rcv controllers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377358A (en) * | 2020-01-03 | 2020-07-07 | 武汉港迪电气传动技术有限公司 | Method for stably controlling slewing mechanism of tower crane |
-
2017
- 2017-09-05 CN CN201721128816.8U patent/CN207330191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377358A (en) * | 2020-01-03 | 2020-07-07 | 武汉港迪电气传动技术有限公司 | Method for stably controlling slewing mechanism of tower crane |
| CN111377358B (en) * | 2020-01-03 | 2021-09-28 | 武汉港迪技术股份有限公司 | Method for stably controlling slewing mechanism of tower crane |
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