CN200951931Y - Speed regulating control apparatus of internal combustion engine electric hoister - Google Patents
Speed regulating control apparatus of internal combustion engine electric hoister Download PDFInfo
- Publication number
- CN200951931Y CN200951931Y CN 200620099107 CN200620099107U CN200951931Y CN 200951931 Y CN200951931 Y CN 200951931Y CN 200620099107 CN200620099107 CN 200620099107 CN 200620099107 U CN200620099107 U CN 200620099107U CN 200951931 Y CN200951931 Y CN 200951931Y
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- generator
- excitation
- internal combustion
- speed
- control
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Abstract
The utility model discloses an energy-driven electric crane speed setting controller, which comprises a gas engine connected with a coaxial multi-stator generator through a shaft coupling, wherein output terminal of the generator is directly connected with the input terminal of a motor. Excitation coil of the generator is connected with an excitation control panel. The excitation control panel can set 'positive' and 'negative' control terminals and variable potential device. The utility model is provided with variable-frequency speed control, which has the same operation characteristics as controlled silicon speed regulating technology, realizes high generator performance, wide scope of stepless speed regulating and non-contact commutation and has the advantages of simple circuit, lower production cost, high system reliability and remarkable energy saving effects.
Description
[technical field]
The utility model relates to a kind of motor speed adjustment control setup, especially a kind of internal combustion electric travelling crane speed-regulating control device.
[background technology]
The ICE-powered electric travelling crane is the widely used a kind of weight-lifting equipments in place such as harbour, station, harbour, goods yard, it is by the internal combustion engine drive generator for electricity generation, through each the mechanism's electrical motor operation of electric apparatus control hoisting crane (as hoist, luffing, revolution, traveling gear etc.).The most frequently used electric control method has, contactor control and thyristor speed control control and variable frequency regulating speed control.Its controlling features all is through the drive motor of " electrical control " link by electrical generator.
Contactor control is a most universal a kind of control method, control simple, economical, but poor reliability, motor speed adjustment poor performance.Silicon control DC speed regulation and frequency changing AC speed changing, it is a kind of advanced person's method for controlling speed regulation, it is present crane applications main flow, but it is high that the cost height of making, degree of protection require, in use often need the stronger maintainer of professional ability to safeguard, on mobile crane, use especially, limited by overall dimensions, make hoisting crane compactness, difficult in maintenance.Because generator set output must be the power frequency supply (50Hz of frequency stabilization, 400V), diesel engine must constantly move under rated speed of rotation, oil consumption is big, operating cost are high, less economical, therefore noise is high, has restricted the application development of variable-frequency control technique at the internal combustion electric travelling crane.
Before the silicon control technology is used, people are in order to realize the stepless time adjustment of electric motor system, adopt electrical motor to drag an electrical generator, change generator excitation and promptly change the purpose that generator output voltage reaches the adjusting motor speed, it is the DFD speed regulating method, because this mode is to adopt AC-powered, mechanically use at mobile operation and to be restricted, big because of this mode volume again, efficient is low, therefore this kind mode of speed control only is applied in relatively-stationary place, as lathe etc., and only be suitable for the DC motor with separate excitation speed governing.
[summary of the invention]
The purpose of this utility model is that to overcome existing internal combustion electric travelling crane less economical, and problems such as control system complexity, poor reliability provide a kind of internal combustion electric travelling crane speed-regulating control device (NFD).
The technical solution of the utility model is: a kind of internal combustion electric travelling crane speed-regulating control device, combustion engine is connected by plunging joint with a coaxial multi-rotor electrical generator, generator output end and motor input terminals direct connection, dynamo field coil is connected with the excitation control desk, and the excitation control desk is provided with " forward ", " oppositely " control end and variable potentiometer.
Above-mentioned internal combustion electric travelling crane speed-regulating control device, the excitation control desk also is provided with reverse degausser,
Above-mentioned internal combustion electric travelling crane speed-regulating control device is provided with a series excitation coil directional circuit of being made up of 4 diodes in the DC motor dragging system.
The utility model adopts internal combustion engine drive coaxial multi-rotor electrical generator to drive each mechanism's electrical motor, because electrical motor and electrical generator direct connection, intermediate links such as silicon controlled speed regulator and frequency converter have been saved, be applied on the wheel-mounted crane and can significantly reduce manufacturing cost, with 25T level tire hoisting crane is example, the automatically controlled cost of being made up of 3 digital governors is about 250,000 yuan, account for the complete machine cost more than 15%, wiring is complicated, needs professional's debugging and maintenance, hoisting crane at work, hoisting heavy only accounts for 1/5 of whole working cycle, and the most of the time is in treats goods and contraposition, and the prior art combustion engine always works in rated speed of rotation, waste big, the utility model circuit is simple, and electrical generator and motor direct connection cable are only arranged, and adopts the control of combustion engine variable speed, the hoisting crane most of the time is operated in treats speed, and energy-saving effect is obvious.
[description of drawings]
Be described further below in conjunction with drawings and Examples.
Fig. 1 is the utility model structural representation.
Fig. 2 is that the utility model exchanges the structural representation that drags.
Fig. 3 is the structural representation that the prior art direct current drags.
Fig. 4 is that prior art exchanges the structural representation that drags.
Wherein, the double accompanying drawing that makes an abstract of Fig. 1.
[specific embodiment]
A kind of internal combustion electric travelling crane speed-regulating control device, combustion engine 1 and a coaxial multi-rotor electrical generator 2 are connected by plunging joint, generator output end and electrical motor 3 input end direct connections, dynamo field coil 4 is connected with excitation control desk 5, and the excitation control desk is provided with " forward ", " oppositely " control end and variable potentiometer 6.He exciting field is controlled electrical generator by the excitation control desk, the excitation control desk changes the direction of current on the dynamo field coil by " forward ", " oppositely " control end, can obtain the antipodal magnetic field of both direction, thereby change generator output voltage direction (AC excitation change phase sequence), realize that electrical motor is forward and reverse.The size of electric current in the regulator potentiometer scalable dynamo field coil, when the exciting current increase, generator speed increases, and generator output voltage is just high, and motor speed speeds, otherwise slows down.When excitation plate stopped excitation, generator output voltage was zero, and electrical motor is out of service.Absolute " zero " magnetic field of electrical generator when stopping excitation for assurance, the excitation control desk also is provided with reverse degausser, guarantees that electronic function shuts down fully, and does not wriggle.In the DC motor dragging system for to select for use the good series excited motor of lifting performance to be provided with a series excitation coil directional circuit of forming by 4 diodes, make the direction of current that flows through series excitation coil constant, when the generator output voltage direction changed, the electrical motor hand of rotation also changed thereupon.
Press hoisting crane different institutions power, distribute the coaxial multi-rotor generator parameter, be generally coaxial triple-spool (three generator coaxles).As lifting mechanism 50kw, luffing mechanism 30kw, swing type mechanism 16kw, corresponding generator set is combined into 60+40+22 (kw), and three electrical generators are independent rotor and independent excitation, and accompanying drawing is seen in wiring.Electrical generator and electrical motor are used the lead direct connection respectively, when handling hoisting crane, come the controlling combustion engine throttle with pin, with generator excitation control desk handle control generator excitation direction and excitation intensity.
During hoisting crane work, regulate throttle and can change generator output voltage (alternating current generator change frequency), realize the electrical motor stepless time adjustment.Change handle angle size (regulator potentiometer RW size), adjusting electromotor velocity that both can be level and smooth can realize that again electrical motor " soft " opens, brakes, and promptly " zero " speed opens, brakes.
Claims (3)
1, a kind of internal combustion electric travelling crane speed-regulating control device, it is characterized in that: combustion engine (1) is connected by plunging joint with a coaxial multi-rotor electrical generator (2), generator output end and electrical motor (3) input end direct connection, dynamo field coil (4) is connected with excitation control desk (5), and the excitation control desk is provided with " forward ", " oppositely " control end and variable potentiometer (6).
2, a kind of internal combustion electric travelling crane speed-regulating control device according to claim 1, it is characterized in that: the excitation control desk also is provided with reverse degausser.
3, a kind of internal combustion electric travelling crane speed-regulating control device according to claim 1 and 2 is characterized in that: be provided with a series excitation coil directional circuit of being made up of 4 diodes in the DC motor dragging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620099107 CN200951931Y (en) | 2006-09-22 | 2006-09-22 | Speed regulating control apparatus of internal combustion engine electric hoister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620099107 CN200951931Y (en) | 2006-09-22 | 2006-09-22 | Speed regulating control apparatus of internal combustion engine electric hoister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200951931Y true CN200951931Y (en) | 2007-09-26 |
Family
ID=38810228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620099107 Expired - Fee Related CN200951931Y (en) | 2006-09-22 | 2006-09-22 | Speed regulating control apparatus of internal combustion engine electric hoister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200951931Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050388B (en) * | 2009-11-09 | 2012-11-21 | 新乡市中原起重电器厂有限公司 | Noncontact control system of single beam crane |
-
2006
- 2006-09-22 CN CN 200620099107 patent/CN200951931Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050388B (en) * | 2009-11-09 | 2012-11-21 | 新乡市中原起重电器厂有限公司 | Noncontact control system of single beam crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20100922 |