CN203754272U - Electric control system of gantry crane - Google Patents
Electric control system of gantry crane Download PDFInfo
- Publication number
- CN203754272U CN203754272U CN201420105828.9U CN201420105828U CN203754272U CN 203754272 U CN203754272 U CN 203754272U CN 201420105828 U CN201420105828 U CN 201420105828U CN 203754272 U CN203754272 U CN 203754272U
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- CN
- China
- Prior art keywords
- frequency converter
- battery pack
- control system
- battery
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses an electric control system of a gantry crane, belonging to the technical field of gantry cranes. The electric control system comprises a frequency converter arranged between a 380V alternating current power supply and a motor assembly, a DC/DC (direct current/direct current) power module, and a storage battery pack, wherein the static standard voltage of a direct current bus of the frequency converter is 540V, the direct current bus of the frequency converter is electrically connected with an input terminal of the DC/DC power module and the motor assembly, and the storage battery pack is formed by a plurality of capacitive type lithium batteries through serial connection. With the adoption of the technical scheme, the motor assembly and the DC/DC power module commonly use the direct current bus of the frequency converter, electrical energy fed back by the motor assembly sequentially passes through the direct current bus and the DC/DC power module to be stored in the storage battery pack during operation process of the electric control system, and besides, the electrical energy fed back by the motor assembly can be prevented from entering a power grid to cause interference to the power grid; moreover, the electrical energy in the storage battery pack can provide electrical energy to the motor assembly, therefore, the energy-saving effect is achieved.
Description
Technical field
The utility model belongs to high pedestal jib crane technical field, particularly relates to a kind of electric-control system of high pedestal jib crane.
Background technology
In recent years, along with the fast development of harbour cause, span winch technology has also obtained swift and violent progress, and well-known, span winch mainly comprises: for harbour and open-air depots, with the handling span winch of grab bucket or suspension hook handling; On-the-spot for building berth, floating drydock and tie boat anlongshore dress, carry out the shipbuilding span winch of the lifting such as hull splicing, equipment tie boat anlongshore dress work, and the building and installation span winch that is used in power station and carries out dam pouring, equipment and preformed part lifting etc.; Summarize the span winch of above-mentioned three types, it includes and hoists, revolution, luffing and operating unit; And the realization of described a few big-movement functions mainly depends on its group of motors, span winch will complete the coordination and interaction that above-mentioned course of action needs multiple motors, therefore, it is evident that span winch is the device that a kind of energy-output ratio is larger.
In span winch technology, ensureing under the prerequisite of the normal work of span winch, how to save the focus that electric energy is engineers research always, as everyone knows, in order to save electric energy, engineers arranges feedback-type rectification feedback device through the electric-control system front end of the span winch of being everlasting, but finds by long-term practice, there is following defect in traditional feedback-type rectification feedback device: one, the electric energy of feedback directly enters electrical network, causes certain destruction to disturb to electrical network; Two, the own price comparison costliness of feedback-type rectification feedback device.
Summary of the invention
Goal of the invention of the present utility model is to overcome the deficiencies in the prior art, proposes that a kind of no-load current is little, the electric-control system of perfect heat-dissipating, high pedestal jib crane that safety factor is high.
The technical scheme that the utility model is taked for the technical matters existing in solution known technology is:
An electric-control system for high pedestal jib crane, comprises the frequency converter, DC/DC power module and the battery pack that are arranged between 380V source of AC and group of motors; Wherein: the DC bus static criteria voltage of frequency converter is 540V, the DC bus of described frequency converter is electrically connected with input terminal and the group of motors of DC/DC power module respectively; Described battery pack is composed in series by multiple capacitor type lithium celies.
As preferably, the utility model has also adopted following technical scheme:
Also comprise the battery manager being electrically connected with battery pack; Described battery manager comprises:
For detection of the battery detecting part of battery set charge/discharge electric current, battery pack temperature and battery pack internal resistance; Described battery detecting part comprises current sensor, voltage sensor and temperature sensor;
For showing that above-mentioned battery detecting part detects the display section of information.
On the DC bus of described frequency converter, be also connected with brake unit, the lead-out terminal of described brake unit is connected with braking resistor.
Described frequency converter comprises that surge voltage absorption circuit, rectifying circuit, the rush current of series connection successively suppress circuit, balancing capacitor, brake circuit and inversion circuit.
Advantage and the good effect that the utlity model has are:
One, by adopting technique scheme, the DC bus of group of motors of the present utility model and DC/DC power module sharing frequency converter, therefore in the process of work, the electric energy that group of motors feeds back is successively by DC bus, DC/DC power module and then be stored in battery pack; Therefore can prevent on the one hand that electric energy that group of motors feeds back from entering electrical network electrical network is caused to interference; Meanwhile, the electric energy in battery pack also can be group of motors electric energy is provided; Have advantages of on the other hand energy-conservation;
Two, due to the battery manager that also adopted of the present utility model, therefore can monitor in real time the mode of operation of battery pack, can effectively prevent that battery pack from overcharging or the generation of other Peril Incidents.
Brief description of the drawings
Fig. 1 is electric-control system schematic diagram of the present utility model;
Fig. 2 is partial circuit diagram of the present utility model, is mainly used in showing the circuit structure of frequency converter;
Fig. 3 is one-line diagram of the present utility model.
Detailed description of the invention
For further understanding utility model content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, Fig. 2 and Fig. 3, a kind of electric-control system of high pedestal jib crane, comprises the frequency converter, DC/DC power module and the battery pack that are arranged between 380V source of AC and group of motors; Wherein: frequency converter is preferably pacified river motor H1000 series lifting special converter, and the DC bus static criteria voltage of frequency converter is 540V, and the DC bus of described frequency converter is electrically connected with input terminal and the group of motors of DC/DC power module respectively; Described battery pack is composed in series by multiple capacitor type lithium celies; In this specific embodiment, the nominal voltage of single-unit capacitor type lithium cell is 3.2V, discharge cut-off voltage is 2.5V, charge cutoff voltage is 3.6V, the electrical network of considering frequency converter input power allows undulating quantity: ± 10%, so DC bus-bar voltage should be under static state: 537 ± 10%, allow to fluctuate between 483V～590V.The minimum operating voltage of the permission of battery pack should be lower than 483V so, because the DC bus static criteria voltage of frequency converter is 540V, its computing value is 380V*1.414 ≈ 537V, therefore consider that every joint capacitor type lithium cell leaves certain allowance, the operating voltage range of every batteries is designed between 2.55V～3.55V, so total discharge cut-off voltage should be less than 483V after battery series connection, namely the serial number of battery should be less than 483V ÷ 2.55V=189 joint, therefore in this specific embodiment, the quantity of capacitor type lithium cell is 189 joints.
For the ease of the real-time monitoring to battery pack, on the basis of above-mentioned specific embodiment, as preferably also comprising the battery manager being electrically connected with battery pack; Described battery manager comprises:
For detection of the battery detecting part of battery set charge/discharge electric current, battery pack temperature and battery pack internal resistance; Described battery detecting part comprises current sensor, voltage sensor and temperature sensor;
For showing that above-mentioned battery detecting part detects the display section of information.
On the DC bus of described frequency converter, be also connected with brake unit, the lead-out terminal of described brake unit is connected with braking resistor.
Frequency converter is a vitals in this specific embodiments, in order to ensure its safe reliability, as shown in Figure 2: the frequency converter in above-mentioned specific embodiment comprises that surge voltage absorption circuit, rectifying circuit, the rush current of series connection successively suppress circuit, balancing capacitor, brake circuit and inversion circuit.
Above a kind of embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.
Claims (4)
1. an electric-control system for high pedestal jib crane, is characterized in that: comprise the frequency converter, DC/DC power module and the battery pack that are arranged between 380V source of AC and group of motors; Wherein: the DC bus static criteria voltage of frequency converter is 540V, the DC bus of described frequency converter is electrically connected with input terminal and the group of motors of DC/DC power module respectively; Described battery pack is composed in series by multiple capacitor type lithium celies.
2. the electric-control system of high pedestal jib crane according to claim 1, is characterized in that: also comprise the battery manager being electrically connected with battery pack; Described battery manager comprises:
For detection of the battery detecting part of battery set charge/discharge electric current, battery pack temperature and battery pack internal resistance; Described battery detecting part comprises current sensor, voltage sensor and temperature sensor;
For showing that above-mentioned battery detecting part detects the display section of information.
3. the electric-control system of high pedestal jib crane according to claim 1, is characterized in that: on the DC bus of described frequency converter, be also connected with brake unit, the lead-out terminal of described brake unit is connected with braking resistor.
4. according to the electric-control system of high pedestal jib crane described in claim 1-3 any one, it is characterized in that: described frequency converter comprises that surge voltage absorption circuit, rectifying circuit, the rush current of series connection successively suppress circuit, balancing capacitor, brake circuit and inversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105828.9U CN203754272U (en) | 2014-03-10 | 2014-03-10 | Electric control system of gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105828.9U CN203754272U (en) | 2014-03-10 | 2014-03-10 | Electric control system of gantry crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203754272U true CN203754272U (en) | 2014-08-06 |
Family
ID=51249571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420105828.9U Expired - Lifetime CN203754272U (en) | 2014-03-10 | 2014-03-10 | Electric control system of gantry crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203754272U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030165A (en) * | 2014-03-10 | 2014-09-10 | 天津港第四港埠有限公司 | An electronic control system of a portal slewing crane |
| CN104410127A (en) * | 2014-12-05 | 2015-03-11 | 深圳市安顺节能科技发展有限公司 | Pure electric system for gantry crane |
-
2014
- 2014-03-10 CN CN201420105828.9U patent/CN203754272U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030165A (en) * | 2014-03-10 | 2014-09-10 | 天津港第四港埠有限公司 | An electronic control system of a portal slewing crane |
| CN104410127A (en) * | 2014-12-05 | 2015-03-11 | 深圳市安顺节能科技发展有限公司 | Pure electric system for gantry crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |