CN202297041U - Hydraulic pump control system for electric forklift - Google Patents
Hydraulic pump control system for electric forklift Download PDFInfo
- Publication number
- CN202297041U CN202297041U CN201120367661XU CN201120367661U CN202297041U CN 202297041 U CN202297041 U CN 202297041U CN 201120367661X U CN201120367661X U CN 201120367661XU CN 201120367661 U CN201120367661 U CN 201120367661U CN 202297041 U CN202297041 U CN 202297041U
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- Prior art keywords
- hydraulic pump
- electric machine
- hydraulic
- motor
- controller
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- Expired - Fee Related
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- Control Of Motors That Do Not Use Commutators (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a hydraulic pump control system for an electric forklift. The hydraulic pump control system is provided with a motor controller, a motor position sensor, pressure sensors and a temperature sensor, wherein a high-power permanent magnet brushless motor controller is adopted for the motor controller; a power output wire of the high-power permanent magnet brushless motor controller is correspondingly connected with a power wire of a permanent magnet brushless direct current motor; the pressure sensors are arranged in oil channels of a gantry elevating hydraulic cylinder, a gantry inclined hydraulic cylinder and a steering booster cylinder respectively; and the signal output end of each pressure sensor is connected with the motor controller through a signal processing module. In the hydraulic pump control system, the pressure sensors are arranged, an enclosed loop is formed in the hydraulic system, the motor speed and the oil consumption can be automatically balanced by using the pressure sensors and the high-power permanent magnet brushless controller according to the reaction of a hydraulic loop, so that electric energy is saved. The hydraulic pump control system has the advantages of high power utilization ratio and no voltage peak value, so that the reliability of the entire electric forklift is improved, and the service life of the forklift is prolonged.
Description
Technical field
The utility model relates to electri forklift, specifically is a kind of hydraulic pump control that is used for electri forklift.
Background technology
Electri forklift generally all adopts independent motor, the driven gear pump, thus hydraulic power is provided for the lifting and the inclination of its door frame work system.Present homemade fork truck owing to do not realize the speed governing of hydraulic electric motor, hydraulic electric motor can only high speed rotating after startup, can be along with the change of function and pressure automatically regulating, unnecessary flow can only flow back to fuel tank through by pass valve, causes energy dissipation.
Summary of the invention
The purpose of the utility model is to provide a kind of hydraulic pump control that is used for electri forklift, the described this hydraulic pump control that is used for electri forklift to solve the prior art hydraulic electric motor can be along with the change of function and pressure automatically regulating and cause the not high technical matters of energy dissipation, degree of utilization.
The purpose of the utility model realizes through following technical scheme: be provided with Hydraulic Pump in this electri forklift; Hydraulic Pump is by direct motor drive; The pressure oil of Hydraulic Pump links to each other with door frame lifting hydraulic cylinder, door frame hydraulic tilt cylinder and power steering hydraulic actuating cylinder through electromagnetic valve; It is characterized in that: this electrical motor is a permanent-magnet brushless DC electric machine; Also be provided with electric machine controller, motor position sensor and pressure sensor and temperature sensor in this hydraulic pump control; Electric machine controller adopts superpower permanent magnetic brushless controller; The power supply output line correspondence of superpower permanent magnetic brushless controller links to each other with the power lead of permanent-magnet brushless DC electric machine, in the oil circuit of door frame lifting hydraulic cylinder, door frame hydraulic tilt cylinder and power steering hydraulic actuating cylinder, is respectively equipped with pressure sensor, and the signal output part of this pressure sensor links to each other with electric machine controller through signal processing module; Carry out the control of power of motor is realized the intelligent management of power of motor; Motor position sensor and temperature sensor are embedded in the permanent-magnet brushless DC electric machine, and the signal output part of motor position sensor and temperature sensor links to each other with electric machine controller, realize that controller is to rotating speed of motor, moment of torsion, temperature and current control.
Signal processing module is an A and D converter.
Also comprise the motor power recovery system in this hydraulic pump control; It comprises by permanent magnetic brushless controller 7, storage battery 11 and permanent-magnet brushless DC electric machine 2 and constituting; Permanent-magnet brushless DC electric machine 2 potential energy owing to goods when door frame falls makes Hydraulic Pump 1 counter-rotating; Hydraulic Pump drives permanent-magnet brushless DC electric machine 2, and the permanent-magnet brushless DC electric machine of this moment becomes electrical generator, and the electric energy of output is handled by the permanent magnetic brushless controller and returned storage battery.
The utility model is compared with prior art, and its effect is actively with tangible.Originally the hydraulic pump control that is used for electri forklift is provided with pressure sensor, makes hydraulic efficiency pressure system form a closed loop, and pressure sensor and high-power permanent magnet brushless controller can be according to the reactions of hydraulic circuit; The self-equalizing motor speed with use oil mass, thereby saves energy, the advantage of this control is a power utilization rate height; The no-voltage peak value; The noise of hydraulic efficiency pressure system is low, and the wearing and tearing of Hydraulic Elements are also low, thereby has improved widely the reliability and the service life of car load.
Description of drawings
Fig. 1 is the control principle figure of the utility model.
The specific embodiment
Through embodiment the utility model is done further explain below in conjunction with accompanying drawing.
As shown in Figure 1.Be provided with Hydraulic Pump 1 in this electri forklift; Hydraulic Pump 1 is driven by electrical motor 2; The pressure oil of Hydraulic Pump 2 links to each other with door frame lifting hydraulic cylinder 3, door frame hydraulic tilt cylinder 4 and power steering hydraulic actuating cylinder 5 through electromagnetic valve, and it is characterized in that: this electrical motor is a permanent-magnet brushless DC electric machine 2, also is provided with electric machine controller 6, motor position sensor 7 and pressure sensor 8 and temperature sensor 9 in this hydraulic pump control; Electric machine controller 7 adopts superpower permanent magnetic brushless controller; Power lead (the U of the power supply output line of superpower permanent magnetic brushless controller 7 (U, V, W line) correspondence and permanent-magnet brushless DC electric machine; V; The W line) link to each other, in the oil circuit of door frame lifting hydraulic cylinder 3, door frame hydraulic tilt cylinder 4 and power steering hydraulic actuating cylinder 5, be respectively equipped with a pressure sensor 8, the signal output part of these three pressure sensors 8 links to each other with electric machine controller 6 through signal processing module 10; Carry out the control of power of motor is realized the intelligent management of power of motor; Motor position sensor 7 and temperature sensor 9 are embedded in the permanent-magnet brushless DC electric machine 2, and the signal output part of motor position sensor 7 and temperature sensor 9 links to each other with electric machine controller 6, realize that controller is to rotating speed of motor, moment of torsion, temperature and current control.
Signal processing module is an A and D converter.
Also comprise the motor power recovery system in this hydraulic pump control; It comprises by permanent magnetic brushless controller 7, storage battery 11 and permanent-magnet brushless DC electric machine 2 and constituting; Permanent-magnet brushless DC electric machine potential energy owing to goods when door frame falls makes the Hydraulic Pump counter-rotating; Hydraulic Pump drives permanent-magnet brushless DC electric machine, and the permanent-magnet brushless DC electric machine of this moment becomes electrical generator, and the electric energy of output is handled by the permanent magnetic brushless controller and returned storage battery 11.
Certainly, also can adopt a pressure sensor, this moment, pressure sensor need be located on the total loop of hydraulic efficiency pressure system.
Claims (3)
1. hydraulic pump control that is used for electri forklift; Be provided with Hydraulic Pump in this electri forklift; Hydraulic Pump is by direct motor drive; The pressure oil of Hydraulic Pump links to each other with door frame lifting hydraulic cylinder, door frame hydraulic tilt cylinder and power steering hydraulic actuating cylinder through electromagnetic valve; It is characterized in that: this electrical motor is a permanent-magnet brushless DC electric machine; Also be provided with electric machine controller, motor position sensor and pressure sensor and temperature sensor in this hydraulic pump control, electric machine controller adopts superpower permanent magnetic brushless controller, and the power supply output line correspondence of superpower permanent magnetic brushless controller links to each other with the power lead of permanent-magnet brushless DC electric machine; In the oil circuit of door frame lifting hydraulic cylinder, door frame hydraulic tilt cylinder and power steering hydraulic actuating cylinder, be respectively equipped with pressure sensor; The signal output part of this pressure sensor links to each other with electric machine controller through signal processing module, carries out the control of power of motor is realized the intelligent management of power of motor, and motor position sensor and temperature sensor are embedded in the permanent-magnet brushless DC electric machine; The signal output part of motor position sensor and temperature sensor links to each other with electric machine controller, realizes that controller is to rotating speed of motor, moment of torsion, temperature and current control.
2. the hydraulic pump control that is used for electri forklift as claimed in claim 1 is characterized in that: signal processing module is an A and D converter.
3. the hydraulic pump control that is used for electri forklift as claimed in claim 1; It is characterized in that: also comprise the motor power recovery system in this hydraulic pump control; It comprises by permanent magnetic brushless controller, storage battery and permanent-magnet brushless DC electric machine and constituting; Permanent-magnet brushless DC electric machine potential energy owing to goods when door frame falls makes the Hydraulic Pump counter-rotating; Hydraulic Pump drives permanent-magnet brushless DC electric machine, and the permanent-magnet brushless DC electric machine of this moment becomes electrical generator, and the electric energy of output is handled by the permanent magnetic brushless controller and returned storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120367661XU CN202297041U (en) | 2011-09-29 | 2011-09-29 | Hydraulic pump control system for electric forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120367661XU CN202297041U (en) | 2011-09-29 | 2011-09-29 | Hydraulic pump control system for electric forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202297041U true CN202297041U (en) | 2012-07-04 |
Family
ID=46365979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120367661XU Expired - Fee Related CN202297041U (en) | 2011-09-29 | 2011-09-29 | Hydraulic pump control system for electric forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202297041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761302A (en) * | 2012-08-01 | 2012-10-31 | 遵义天义利威机电有限责任公司 | Direct current motor controller for lifting hydraulic pump of electric forklift |
| CN102817721A (en) * | 2012-08-29 | 2012-12-12 | 林德（中国）叉车有限公司 | Device and method for controlling real-time speed regulation of power system of forklift |
| CN107906063A (en) * | 2017-12-03 | 2018-04-13 | 长沙汽电汽车零部件有限公司 | Lift work equipment and its dynamical system |
-
2011
- 2011-09-29 CN CN201120367661XU patent/CN202297041U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761302A (en) * | 2012-08-01 | 2012-10-31 | 遵义天义利威机电有限责任公司 | Direct current motor controller for lifting hydraulic pump of electric forklift |
| CN102817721A (en) * | 2012-08-29 | 2012-12-12 | 林德（中国）叉车有限公司 | Device and method for controlling real-time speed regulation of power system of forklift |
| CN102817721B (en) * | 2012-08-29 | 2016-04-27 | 林德（中国）叉车有限公司 | A kind of device and method for controlling fork truck power system real-time speed regulating |
| CN107906063A (en) * | 2017-12-03 | 2018-04-13 | 长沙汽电汽车零部件有限公司 | Lift work equipment and its dynamical system |
| CN107906063B (en) * | 2017-12-03 | 2024-05-14 | 长沙汽电汽车零部件有限公司 | Lifting operation equipment and power system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CATERPILLAR (ZHENGZHOU) CO., LTD. Free format text: FORMER NAME: ZHENGZHOU SIWEI ELECTROMECHANICAL EQUIPMENT MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 No. 7 shuttle Road, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee after: Caterpillar (Zhengzhou) Co., Ltd. Address before: 450001 No. 7 shuttle Road, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee before: Zhengzhou Siwei Electromechanical Equipment Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20170929 |