CN201952112U - Hybrid power device of frequency conversion type fully hydraulic crane - Google Patents
Hybrid power device of frequency conversion type fully hydraulic crane Download PDFInfo
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- CN201952112U CN201952112U CN2010206702541U CN201020670254U CN201952112U CN 201952112 U CN201952112 U CN 201952112U CN 2010206702541 U CN2010206702541 U CN 2010206702541U CN 201020670254 U CN201020670254 U CN 201020670254U CN 201952112 U CN201952112 U CN 201952112U
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Abstract
The utility model relates to a power device of a hydraulic crane, in particular to a hybrid power device of a frequency conversion type fully hydraulic crane, which is characterized in that an engine is connected in series with hydraulic pumps through an engine coupling; two hydraulic pumps are connected in series with a hydraulic system after being connected in parallel through a hydraulic pipeline; and a variable-frequency motor and the hydraulic pumps are connected in series through a motor coupling after a frequency converter and the variable-frequency motor are connected in series through a cable by a frequency regulation pedal. The utility model has the beneficial effects that a motor frequency conversion technique is used on a moving fully hydraulic hybrid power crane; compared with a common motor, the rotate speed of the common motor cannot be adjusted, and the rotate speed of the variable-frequency motor is adjustable; when a ground power supply is used, the variable-frequency motor works at a low rotate speed when the crane is underloaded or noload until the rotation is stopped, and thereby, the energy-saving goal is achieved. When the crane works, the variable-frequency motor can be stably accelerated or decelerated, and current can also be stably changed when the variable-frequency motor is accelerated and decelerated without impact, so that an electric net and components are protected.
Description
Technical field
The utility model relates to a kind of hydraulic lift engine installation, is specially the all-hydraulic hoisting crane mixed power plant of a kind of frequency conversion type.
Background technology
At present, known runabout crane be because the flowability problem of operating location can not be used ground power supply, therefore seldom electricity consumption as the power of hoisting crane.Along with the continuous deterioration of earth environment and the shortage day by day of oil resources, low-carbon (LC), green, environmental protection, the energy-conservation new theory of people that become.Electric energy is replacing oil gradually as clean energy resource.In modern operation place, as goods yard and harbour, ground power supply and has become standard and has been equipped with, the runabout crane of electrification, and field of application will be more and more extensive.But when being power with the common motor, starting speed is slow, electric current is big, and motor speed can not be adjusted, the no-load power consumption height.And during crane job, each working cycle all has certain wait time, is the readiness for action of hoisting crane during this period of time, for the consideration of operating efficiency, generally can not shut down, so the no-load power consumption higher position becomes the big problem of electric power formula hoisting crane.On runabout crane, what use the common motor solution only is pollution problem, can not solve power saving.Frequency conversion is a kind of new energy saving motor technology, regulates motor speed by changing line frequency, and motor speed can be adjusted arbitrarily between 0～rated speed of rotation in theory, also smooth change, not impact thereupon of electric current when rotating speed changes.When variable-frequency motor reduced at rotating speed, energy consumption also decreased, and reached purpose of energy saving.During starting, motor current steadily increases, and does not impact, and the electric elements of electrical network and equipment can both be protected.The characteristics of variable-frequency motor are consistent with hoisting crane work: load is big during operation, and load is little during empty hook, needs the low output of power when unloaded, and the time is long, and zero load proportion in operation is big.Saving this part in the current low-carbon economy epoch consumes particularly necessary.The present invention is applied to the motor frequency change technology on the mobile crane exactly, realizes the purpose of energy-conserving and environment-protective.
Summary of the invention
The all-hydraulic hybrid power hoisting crane of flow-type frequency conversion adopts two cover Hydraulic Pump fuel-feeds system, is driven by driving engine and variable-frequency motor respectively, and engine section is identical with conventional all-hydraulic hoisting crane.Hydraulic Pump and engine-driven Hydraulic Pump access in parallel hydraulic efficiency pressure system that variable-frequency motor drives.The ground electrical source of power is got off to from hoisting crane and is got on the bus, and changes the frequency control motor speed by frequency converter.Make hoisting crane reduce the rotating speed of electrical motor in underloading with when unloaded by manual control,, reach energy-conservation purpose up to stopping operating.The purpose of this utility model provides a kind of simple in structure, with low cost, the all-hydraulic hoisting crane mixed power plant of easy for operation, energy-conservation frequency conversion type.The purpose of this utility model is achieved in that it comprises driving engine, driving engine drive coupling, Hydraulic Pump, hydraulic tubing, hydraulic efficiency pressure system, frequency control pedal, motor start-up switch, electrical source of power, frequency converter, cable, variable-frequency motor, motor coupler, motor starter, common motor.Driving engine is connected in series through driving engine drive coupling and Hydraulic Pump, and two Hydraulic Pumps are connected in series with hydraulic efficiency pressure system after the hydraulic tubing parallel connection; The frequency control pedal is connected in series variable-frequency motor and Hydraulic Pump through motor coupler after cable is connected in series frequency converter, variable-frequency motor again.The beneficial effects of the utility model are: use the motor frequency change technology on the all-hydraulic hybrid power hoisting crane of flow-type, compare with common electric machine, the rotating speed of common electric machine can not be adjusted, the rotating speed adjustable of variable-frequency motor, when using the ground electrical source of power, hoisting crane variable-frequency motor when underloading and zero load up to stopping operating, is realized energy-conservation purpose in slow speed of revolution work.When the lift heavy operation, variable-frequency motor can smooth acceleration or deceleration, and electric current also can smooth change when quickening and slow down, and does not impact, and electrical network and element can both be protected.
Description of drawings
Fig. 1 is the utility model structural principle scheme drawing.
The specific embodiment
It comprises driving engine 1, driving engine drive coupling 2, Hydraulic Pump 3, hydraulic tubing 4, hydraulic efficiency pressure system 5, frequency control pedal 6, motor start-up switch 7, electrical source of power 8, frequency converter 9, cable 10, variable-frequency motor 11, motor coupler 12.Driving engine 1 is connected in series through driving engine drive coupling 2 and Hydraulic Pump 3, and two Hydraulic Pumps 3 are connected in series with hydraulic efficiency pressure system 5 after hydraulic tubing 4 parallel connections; Frequency control pedal 6 is connected in series variable-frequency motor 11 and Hydraulic Pump 3 through motor coupler 12 after cable 10 is connected in series frequency converter 9, variable-frequency motor 11 again.
In Fig. 1, driving engine 1 and variable-frequency motor 11 can work alone separately, do not disturb mutually.When using engine operating condition, engine output shaft links to each other from hydraulic tubing 4 to hydraulic efficiency pressure system 5 fuel feeding with one group of Hydraulic Pump 3 through driving engine drive coupling 2.When using motor working condition, variable-frequency motor 11 drives another group Hydraulic Pump 3 through motor coupler 12 and inserts hydraulic efficiency pressure system 5 by hydraulic tubing 4, the working speed of variable-frequency motor 11 is controlled by the operator by frequency control pedal 6, pedal 6 positions are not simultaneously, the output frequency difference of frequency converter 9, variable-frequency motor 11 is with corresponding rotating speeds work, and the delivery rate of Hydraulic Pump 3 changes thereupon.When the operation of hoisting crane lift heavy, depress frequency control pedal 6, frequency increases, and variable-frequency motor 11 is with high rotary speed working, and Hydraulic Pump 3 delivery rates increase, and horsepower output strengthens.When hoisting crane needs low cruise, lift frequency control pedal 6, frequency variable-frequency motor 11 is with slow speed of revolution work, and Hydraulic Pump 3 delivery rates reduce, depowering output.During operation gap, hoisting crane is a readiness for action, frequency control pedal 6 is all unclamped, and variable-frequency motor 11 rotating speeds minimum (minimum can reduce to 0 rotating speed), the flow of Hydraulic Pump 3 is minimum, and it is minimum that expenditure of energy reaches, energy-saving effect the best.When the needs hoisting crane changes operation over to by standby, depress frequency control pedal 6 once more, increase the frequency converter output frequency, the variable-frequency motor rotating speed can evenly improve, up to being satisfied with the use needs.Frequency convertor system does not produce rush of current when quickening or slow down, all very little to the influence of electrical network and equipment.
Claims (1)
1. all-hydraulic hoisting crane mixed power plant of frequency conversion type, it comprises driving engine, driving engine drive coupling, Hydraulic Pump, hydraulic tubing, hydraulic efficiency pressure system, frequency control pedal, motor start-up switch, electrical source of power, frequency converter, cable, variable-frequency motor, motor coupler, motor starter, it is characterized in that: driving engine is connected in series through driving engine drive coupling and Hydraulic Pump, and two Hydraulic Pumps are connected in series with hydraulic efficiency pressure system after the hydraulic tubing parallel connection; The frequency control pedal is connected in series variable-frequency motor and Hydraulic Pump through motor coupler after cable is connected in series frequency converter, variable-frequency motor again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206702541U CN201952112U (en) | 2010-12-21 | 2010-12-21 | Hybrid power device of frequency conversion type fully hydraulic crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206702541U CN201952112U (en) | 2010-12-21 | 2010-12-21 | Hybrid power device of frequency conversion type fully hydraulic crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201952112U true CN201952112U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206702541U Expired - Lifetime CN201952112U (en) | 2010-12-21 | 2010-12-21 | Hybrid power device of frequency conversion type fully hydraulic crane |
Country Status (1)
| Country | Link |
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| CN (1) | CN201952112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490583A (en) * | 2012-01-05 | 2012-06-13 | 三一汽车起重机械有限公司 | Hybrid power system for hydraulic system and engineering machine |
| CN103373226A (en) * | 2012-04-24 | 2013-10-30 | 青岛中集环境保护设备有限公司 | Special vehicle and hydraulic driving device for professional operation of special vehicle |
| CN109094353A (en) * | 2018-08-31 | 2018-12-28 | 徐州重型机械有限公司 | A kind of parallel multiple working power takeoff system and method |
| CN110409547A (en) * | 2019-07-26 | 2019-11-05 | 唐山鼎石汽车制造有限公司 | The control device of electric loader hydraulic pump motor |
-
2010
- 2010-12-21 CN CN2010206702541U patent/CN201952112U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490583A (en) * | 2012-01-05 | 2012-06-13 | 三一汽车起重机械有限公司 | Hybrid power system for hydraulic system and engineering machine |
| CN102490583B (en) * | 2012-01-05 | 2014-01-15 | 三一汽车起重机械有限公司 | Hybrid power system for hydraulic system and engineering machine |
| CN103373226A (en) * | 2012-04-24 | 2013-10-30 | 青岛中集环境保护设备有限公司 | Special vehicle and hydraulic driving device for professional operation of special vehicle |
| CN109094353A (en) * | 2018-08-31 | 2018-12-28 | 徐州重型机械有限公司 | A kind of parallel multiple working power takeoff system and method |
| CN109094353B (en) * | 2018-08-31 | 2021-09-14 | 徐州重型机械有限公司 | Parallel type composite operation power take-off system and method |
| CN110409547A (en) * | 2019-07-26 | 2019-11-05 | 唐山鼎石汽车制造有限公司 | The control device of electric loader hydraulic pump motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
|
| CX01 | Expiry of patent term |