CN107032265A - It is a kind of to be used for the direct electric drive pump control energy conserving system of double mast forklift trucks - Google Patents
It is a kind of to be used for the direct electric drive pump control energy conserving system of double mast forklift trucks Download PDFInfo
- Publication number
- CN107032265A CN107032265A CN201710307970.XA CN201710307970A CN107032265A CN 107032265 A CN107032265 A CN 107032265A CN 201710307970 A CN201710307970 A CN 201710307970A CN 107032265 A CN107032265 A CN 107032265A
- Authority
- CN
- China
- Prior art keywords
- valve
- electric drive
- conserving system
- energy conserving
- hydraulic cylinder
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Analytical Chemistry (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
It is more particularly to a kind of to be used for the energy conserving system of double mast forklift trucks the present invention relates to truck hydraulic energy-saving field.It includes pump drive control component, control relief valve assembly, executive module and sensing control component.Pump drive control component includes host computer, connection panel, regenerative braking frequency converter, permasyn morot and hydraulic pump；Relief valve assembly is controlled to include two-way normally closed lifting safety valve, three-position four-way electromagnetic directional valve and pressure-reducing valve；Executive module includes the first single-action hydraulic cylinder, flow distributing and collecting balanced valve and second single-action hydraulic cylinder etc..The invention has the advantages that：Two-door frame is in respective elevated areas lifter motion, utilize frequency of supply of the regenerative braking Frequency Converter Control to permasyn morot, permasyn morot is set to drive the flow and pressure of the hydraulic oil of hydraulic pump output to match with the flow pressure required for real work, avoid unnecessary energy dissipation, capacity usage ratio is improved, the discharge of harmful substance is reduced.
Description
Technical field
It is more particularly to a kind of to be used for the energy conserving system of double mast forklift trucks the present invention relates to truck hydraulic energy-saving field.
Background technology
In the walking type construction machineries such as fork truck, such as double mast forklift trucks, because inner upright mounting and outer mast undertake difference respectively
The liter of improvement stage lifts function, so inner upright mounting and the corresponding driving oil cylinder of outer mast have different lifting speed and different
Displacement.The hydraulic system energy utilization rate of of the prior art pair of mast forklift truck is relatively low：1st, in the uphill process of two door frames,
It can not realize that the flow required for flow, pressure and the hydraulic circuit of real work of hydraulic pump output, pressure match, and make
Into the waste of energy；2nd, in order to ensure that two door frames are steadily declined with appropriate speed, prior art often makes high-voltage oil liquid directly lead to
Choke valve restriction oil return box is crossed, the mode of this throttle grverning easily makes high-voltage oil liquid produce big calorimetric in throttling process
Amount, causes Hydraulic System Oil temperature rise, causes the waste of energy, and be easily caused the aged deterioration of Hydraulic Elements；3rd, Liang Men
Frame is during decline, and the motor of driving hydraulic pump is in on-position, and the high-voltage oil liquid of return can also motor reversion, band
Dynamic electric power generation, the kinetic energy of motor rotation is lost, and the high potential energy of two door frames in decline is also wasted.
Therefore, for double mast forklift trucks, it is necessary to design a kind of new hydraulic system, realization is to inner upright mounting and outer mast not
With the driving of improvement stage, and the recycling of kinetic energy and potential energy is realized, improve capacity usage ratio.
The content of the invention
The problem to be solved in the present invention is not enough aiming at more than and provide it is a kind of be used for double mast forklift trucks can be to door frame
High potential energy and rotor energy carry out the energy conserving system of effective recycling.Its technical scheme is as follows：
It includes pump drive control component, control relief valve assembly, executive module and sensing control component, its key technology
It is：
The pump drive control component includes host computer, connection panel, regenerative braking frequency converter, permagnetic synchronous motor and liquid
Press pump, host computer connects regenerative braking frequency converter, regenerative braking frequency converter connection permagnetic synchronous motor, permanent magnetism by connecting panel
Synchronous motor connects hydraulic pump；
The control relief valve assembly includes two-way normally closed lifting safety valve, three-position four-way electromagnetic directional valve and pressure-reducing valve,
The oil inlet of two-way normally closed lifting safety valve and the oil inlet of pressure-reducing valve are connected respectively to the oil-out of hydraulic pump, two-way normally closed to carry
The oil-out for rising safety valve is connected with the oil inlet of three-position four-way electromagnetic directional valve；
The executive module includes the first single-action hydraulic cylinder, flow distributing and collecting balanced valve and the second single-action hydraulic cylinder, institute
Two actuator ports for stating three-position four-way electromagnetic directional valve connect the rodless cavity and flow distributing and collecting of the first single-action hydraulic cylinder respectively
Balanced valve oil inlet, two oil-outs of flow distributing and collecting balanced valve connect the rodless cavity of two the second single-action hydraulic cylinders respectively,
First single-action hydraulic cylinder drives inner door frame of forklift truck, the second single-action hydraulic cylinder driving outer portal frame of forklift；
The sensing control component includes first pressure sensor, second pressure sensor, the first SGW/SGI displacements coding
Device and the 2nd SGW/SGI displacement encoders, first pressure sensor are arranged on the oil-out and two-way normally closed lifting peace of hydraulic pump
On oil circuit between full valve oil inlet, second pressure sensor is arranged on two-way normally closed lifting safety valve and 3-position 4-way electricity
On oil circuit between magnetic reversal valve, the 2nd SGW/SGI displacement encoders are connected with the oil inlet of the flow distributing and collecting balanced valve, the
One SGW/SGI displacement encoders are connected on the oil circuit between three-position four-way electromagnetic directional valve and the first single-action hydraulic cylinder；
Accumulator is connected on oil circuit between the two-way normally closed lifting safety valve and three-position four-way electromagnetic directional valve.
Further, regenerative braking frequency converter includes braking resistor R in parallelbrakeWith storing up electricity electric capacity in parallel；
Further, regenerative braking frequency converter passes through phase current probe and phase voltage probe connection permagnetic synchronous motor.
Further, permagnetic synchronous motor carries rotary transformer.
Further, first pressure sensor is also connected with pressure-reducing valve.
Further, first pressure sensor, second pressure sensor, the 2nd SGW/SGI displacement encoders and the first SGW/
SGI displacement encoders are all connected on connection panel.
Further, host computer has dspace module and programmable computer controller.
Further, accumulator is spring accumul ator or diaphragm accumulator.
Further, braking resistor RbrakeBreak-make control is realized using switch.
Compared with prior art, the present invention has the advantages that：
1st, two-door frame is in respective elevated areas lifter motion, using regenerative braking Frequency Converter Control to permanent magnet synchronous electric
The frequency of supply of machine, makes required for permagnetic synchronous motor drives flow and pressure and the real work of the hydraulic oil of hydraulic pump output
Flow pressure match, it is to avoid unnecessary energy dissipation, improve capacity usage ratio, reduce the discharge of harmful substance.
2nd, when two-door frame declines, using accumulator to the first single-action hydraulic cylinder and the second single-action hydraulic cylinder mesohigh
The pressure energy of fluid carries out recovery storage；Permagnetic synchronous motor is braked, and high-voltage oil liquid promotes hydraulic pump reversion to be used as liquid
Pressure motor promotes permagnetic synchronous motor to rotate, and permagnetic synchronous motor, which generates electricity, produces regenerative electric energy, it is possible to use regenerative braking frequency conversion
Device uses energy-consumption braking, consumes the regenerative electric energy that permagnetic synchronous motor reversion is produced using braking resistor, makes DC voltage UDCPlace
In normal condition, regenerative braking frequency converter is protected, permagnetic synchronous motor can also be inverted to the regeneration produced using storage capacitor
Power storage, when door frame rises, powers as accessory power supply to permagnetic synchronous motor, is conducive to energy-conservation；
3rd, when two-door frame declines, after the speed governing and dropping valve antihypertensive effect using regenerative braking frequency converter, high-voltage oil liquid
Return to fuel tank, it is to avoid the heat that traditional throttle grverning is produced, and bring the rise of oil liquid temperature and the waste of energy.
Brief description of the drawings
Fig. 1, is the direct electric drive pump control energy conserving system figure for double mast forklift trucks of the present invention.
Embodiment
As shown in figure 1, the present invention includes pump drive control component, control relief valve assembly, executive module and sensing control
Component, its key technology is：
The pump drive control component includes host computer 1, connection panel 2, regenerative braking frequency converter 3, band rotary transformer
Permagnetic synchronous motor 4 and hydraulic pump 5, host computer 1 connects regenerative braking frequency converter 3, regenerative braking frequency conversion by connecting panel 2
The phase current probe 18 of device 3 and the permagnetic synchronous motor 4 of phase voltage 19 connect band rotary transformers of probe, with rotary transformer
Permagnetic synchronous motor 4 connects hydraulic pump 5 by shaft coupling；
The control relief valve assembly includes two-way normally closed lifting safety valve 6, three-position four-way electromagnetic directional valve 7 and pressure-reducing valve
11, the oil inlet of the two-way normally closed oil inlet for lifting safety valve 6 and pressure-reducing valve 11 is connected respectively to the oil-out of hydraulic pump 5, double
Connected to the oil-out of normally closed lifting safety valve 6 with the oil inlet of three-position four-way electromagnetic directional valve 7；
The executive module includes first single-action hydraulic cylinder 8, flow distributing and collecting balanced valve 9 and two the second single-actings
Hydraulic cylinder 10, two actuator ports of the three-position four-way electromagnetic directional valve 7 connect respectively the first single-action hydraulic cylinder 8 without bar
Chamber and the oil inlet of flow distributing and collecting balanced valve 9, two oil-outs of flow distributing and collecting balanced valve 9 connect two the second single-acting liquid respectively
The rodless cavity of cylinder pressure 10, first single-action hydraulic cylinder 8 drives inner door frame of forklift truck, and the inner upright mounting of fork truck is in the first lifting region
Interior motion, the stable rising of the second single-action hydraulic cylinder 10 driving outer portal frame of forklift, the outer mast of fork truck is in the second lifting region
Interior motion；
The sensing control component includes first pressure sensor 13, second pressure sensor 14, the first SGW/SGI displacements
The SGW/SGI displacement encoders 15 of encoder 21 and the 2nd, first pressure sensor 13 is arranged on the oil-out of hydraulic pump 5 and two-way
On oil circuit between the normally closed lifting oil inlet of safety valve 6, first pressure sensor 13 is also connected with pressure-reducing valve 11, and second pressure is passed
Sensor 14 is arranged on the oil circuit between two-way normally closed lifting safety valve 6 and the three-position four-way electromagnetic directional valve 7, the 2nd SGW/
SGI displacement encoders 15 are connected with the oil inlet of the flow distributing and collecting balanced valve 9, and the first SGW/SGI displacement encoders 21 are connected
On oil circuit between the single-action hydraulic cylinder 8 of three-position four-way electromagnetic directional valve 7 and first, first pressure sensor 13, second is pressed
Force snesor 14, the 2nd SGW/SGI displacement encoders 15 and the first SGW/SGI displacement encoders 21 are all connected to connection panel 2
On；
Accumulator 20 is connected on oil circuit between the two-way normally closed lifting safety valve 6 and three-position four-way electromagnetic directional valve 7.
Further, regenerative braking frequency converter 3 includes braking resistor R in parallelbrake16 and storing up electricity electric capacity in parallel, braking electricity
Hinder Rbrake16 realize break-make control using switch
Further, host computer 1 has dspace module and programmable computer controller.
Further, accumulator 20 is spring accumul ator or diaphragm accumulator.
The present invention course of work main for the direct electric drive pump control energy conserving system of double mast forklift trucks is as follows：
1st, two-door frame is in respective elevated areas lifter motion, and host computer 1 opens three-phase alternating-current supply, and is made to regeneration
Dynamic frequency converter 3 sends control instruction, controls the frequency of supply to permagnetic synchronous motor 4 using regenerative braking frequency converter 3, makes permanent magnetism
The flow and pressure for the hydraulic oil that the driving hydraulic pump 5 of synchronous motor 4 is exported match with the flow pressure required for real work,
The first single-action hydraulic cylinder 8 is driven to rise in the first elevated areas；Then, three-position four-way electromagnetic directional valve 7 is adjusted, then is driven
Second single-action hydraulic cylinder 10 rises in the second elevated areas, it is to avoid unnecessary energy dissipation, improves capacity usage ratio.
2nd, when two-door frame declines, the single-action hydraulic cylinder 10 of 20 pair of first single-action hydraulic cylinder of accumulator 8 and second is utilized
The pressure energy of mesohigh fluid carries out recovery storage；Power supply stops powering to permagnetic synchronous motor 4, the permanent magnetism in on-position
Synchronous electric motor rotor is being rotated due to effect of inertia, but can now produce electric energy, and a high-voltage oil liquid part is through pressure-reducing valve 11 times
Fuel tank is flowed to, another part driving hydraulic pump 5 is inverted as motor, drives permagnetic synchronous motor 4 to rotate, now permanent magnet synchronous electric
Machine 4 is equivalent to generator, and permagnetic synchronous motor 4, which generates electricity, produces regenerative electric energy, when needing fast braking, can connect system in parallel
Dynamic resistance RbrakeSwitch, use energy-consumption braking using regenerative braking frequency converter, the regenerative electric energy that permagnetic synchronous motor 4 is produced turns
Turn to braking resistor RbrakeHeat, while permanent-magnetic synchronous motor rotor is by dynamic braking, utilize braking resistor consumption permanent-magnet synchronous
Motor 4 rotates the regenerative electric energy produced, makes DC voltage UDC17 are in normal condition, protection regenerative braking frequency converter 3；If electric
The stability in source preferably, when door frame declines, can disconnect the controlling switch of braking resistor, permagnetic synchronous motor rotates the friendship produced
Electricity AC is flowed, inversion is direct current DC, permagnetic synchronous motor is inverted to the regenerative electric energy produced using storage capacitor and stored, works as goalkeeper
During rising, direct current DC inversions are alternating current AC, and storage capacitor is powered as accessory power supply to permagnetic synchronous motor, is conducive to energy
The recycling of amount.
3rd, when two-door frame declines, accumulator 20 reclaims the high pressure of the first single-acting cylinder 8 of storage and the second single-acting cylinder 10
The pressure energy of fluid, when door frame rises again, accumulator 20 makees process auxiliary drive, to the first single-acting cylinder 8 and the second single-acting
The high-voltage oil liquid of cylinder 10 provides pressure oil, realizes the recycling of energy, speed governing and pressure-reducing valve using regenerative braking frequency converter
Antihypertensive effect, high-voltage oil liquid returns to fuel tank, it is to avoid the heat that traditional throttle grverning is produced, and brings the liter of oil liquid temperature
The high and infringement to Hydraulic Elements.
4th, during door frame rise and fall, first pressure sensor 13, second pressure sensor 14 are respectively to connection
Panel 2 transmits the pressure signal that collects, in SGW/SGI displacement encoders 15,21 are collected to the connection transmission of panel 2 respectively
Door frame, outer mast are in the displacement signal of first, second lifting region, and host computer gathers these signals, are made by processing to regeneration
Dynamic frequency converter 3 sends accurate control instruction.
12 be hydraulic oil container in figure.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；Although with reference to preferred embodiment pair
The present invention is described in detail, those of ordinary skills in the art should understand that：Still can be to the specific of the present invention
Embodiment is modified or carries out equivalent substitution to some technical characteristics；Without departing from the spirit of technical solution of the present invention,
It all should cover among claimed technical scheme scope of the invention.
Claims (9)
1. a kind of be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, including pump drive control component, control safety
Valve module, executive module and sensing control component, it is characterised in that：
The pump drive control component includes host computer (1), connection panel (2), regenerative braking frequency converter (3), permanent magnet synchronous electric
Machine (4) and hydraulic pump (5), host computer (1) connect regenerative braking frequency converter (3), regenerative braking frequency converter by connecting panel (2)
(3) connection permagnetic synchronous motor (4), permagnetic synchronous motor (4) connection hydraulic pump (5)；
The control relief valve assembly includes two-way normally closed lifting safety valve (6), three-position four-way electromagnetic directional valve (7) and pressure-reducing valve
(11), the oil inlet of two-way normally closed lifting safety valve (6) and the oil inlet of pressure-reducing valve (11) are connected respectively to going out for hydraulic pump (5)
Hydraulic fluid port, the oil-out of two-way normally closed lifting safety valve (6) is connected with the oil inlet of three-position four-way electromagnetic directional valve (7)；
The executive module includes the first single-action hydraulic cylinder (8), flow distributing and collecting balanced valve (9) and the second single-action hydraulic cylinder
(10), two actuator ports of the three-position four-way electromagnetic directional valve (7) connect respectively the first single-action hydraulic cylinder (8) without bar
Chamber and flow distributing and collecting balanced valve (9) oil inlet, two oil-outs of flow distributing and collecting balanced valve (9) connect two the second nonocultures respectively
With the rodless cavity of hydraulic cylinder (10), first single-action hydraulic cylinder (8) drives inner door frame of forklift truck, the second single-action hydraulic cylinder
(10) outer portal frame of forklift is driven；
The sensing control component includes first pressure sensor (13), second pressure sensor (14), the first SGW/SGI displacements
Encoder (21) and the 2nd SGW/SGI displacement encoders (15), first pressure sensor (13) are arranged on the fuel-displaced of hydraulic pump (5)
On oil circuit between mouth and two-way normally closed lifting safety valve (6) oil inlet, second pressure sensor (14) is arranged on two-way normally closed
Lifted on the oil circuit between safety valve (6) and the three-position four-way electromagnetic directional valve (7), the 2nd SGW/SGI displacement encoders
(15) oil inlet with the flow distributing and collecting balanced valve (9) is connected, and the first SGW/SGI displacement encoders (21) are connected to three four
On oil circuit between electric change valve (7) and the first single-action hydraulic cylinder (8)；
Accumulator is connected on oil circuit between the two-way normally closed lifting safety valve (6) and three-position four-way electromagnetic directional valve (7)
(20)。
2. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that again
Raw brake variable-frequency device (3) includes braking resistor R in parallelbrake16 and storing up electricity electric capacity in parallel.
3. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that again
Raw brake variable-frequency device (3) is popped one's head in (18) and phase voltage probe (19) connection permagnetic synchronous motor (4) by phase current.
4. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that forever
Magnetic-synchro motor (4) carries rotary transformer.
5. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that the
One pressure sensor (13) is also connected with pressure-reducing valve (11).
6. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that the
One pressure sensor (13), second pressure sensor (14), the 2nd SGW/SGI displacement encoders (15) and the first SGW/SGI
Encoder (21) is moved to be all connected on connection panel (2).
7. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that on
Position machine (1) has dspace module and programmable computer controller.
8. according to claim 1 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that stores
Energy device (20) is spring accumul ator or diaphragm accumulator.
9. according to claim 2 be used for the direct electric drive pump control energy conserving system of double mast forklift trucks, it is characterised in that system
Dynamic resistance RbrakeBreak-make control is realized using switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307970.XA CN107032265B (en) | 2017-05-04 | 2017-05-04 | A kind of direct electric drive pump control energy conserving system for double mast forklift trucks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307970.XA CN107032265B (en) | 2017-05-04 | 2017-05-04 | A kind of direct electric drive pump control energy conserving system for double mast forklift trucks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107032265A true CN107032265A (en) | 2017-08-11 |
| CN107032265B CN107032265B (en) | 2018-11-09 |
Family
ID=59537950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307970.XA Active CN107032265B (en) | 2017-05-04 | 2017-05-04 | A kind of direct electric drive pump control energy conserving system for double mast forklift trucks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107032265B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416736A (en) * | 2017-08-28 | 2017-12-01 | 成都翰道科技有限公司 | A kind of hydraulic forklift adjusting means |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH112212A (en) * | 1997-06-13 | 1999-01-06 | Tokimec Inc | Lift driving device for heavy object |
| CN1559826A (en) * | 2004-03-01 | 2005-01-05 | 上海市闸北区物流工程技术研究所 | Energy-saving electrocar for loading unloading and transporting |
| JP2006117406A (en) * | 2004-10-22 | 2006-05-11 | Mitsubishi Heavy Ind Ltd | Hydraulic device of battery type industrial vehicle |
| CN1830750A (en) * | 2006-03-31 | 2006-09-13 | 西安交通大学 | Electric fork track lifting control system possessing energy recovery device |
| CN202609873U (en) * | 2012-03-23 | 2012-12-19 | 三一集团有限公司 | Oil-electricity hybrid motive power stacking machine |
-
2017
- 2017-05-04 CN CN201710307970.XA patent/CN107032265B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH112212A (en) * | 1997-06-13 | 1999-01-06 | Tokimec Inc | Lift driving device for heavy object |
| CN1559826A (en) * | 2004-03-01 | 2005-01-05 | 上海市闸北区物流工程技术研究所 | Energy-saving electrocar for loading unloading and transporting |
| JP2006117406A (en) * | 2004-10-22 | 2006-05-11 | Mitsubishi Heavy Ind Ltd | Hydraulic device of battery type industrial vehicle |
| CN1830750A (en) * | 2006-03-31 | 2006-09-13 | 西安交通大学 | Electric fork track lifting control system possessing energy recovery device |
| CN202609873U (en) * | 2012-03-23 | 2012-12-19 | 三一集团有限公司 | Oil-electricity hybrid motive power stacking machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416736A (en) * | 2017-08-28 | 2017-12-01 | 成都翰道科技有限公司 | A kind of hydraulic forklift adjusting means |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107032265B (en) | 2018-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103552457B (en) | Oil/electric hybrid rotary drilling rig driving system | |
| CN103701397B (en) | A kind of maglev molecular pump motor control assembly with power fails compensate function | |
| CN107032265B (en) | A kind of direct electric drive pump control energy conserving system for double mast forklift trucks | |
| CN102491137A (en) | Double digital signal processor(DSP)-based elevator drive, control and energy conservation integrated system and method | |
| CN106545548B (en) | More pump multi-motor durability test devices and method based on common DC bus technology | |
| CN108298474A (en) | A kind of fork truck energy saving system with speed-regulating function | |
| CN102491173A (en) | Crane and closed type winch negative power control system for crane | |
| CN102628465A (en) | Energy recovery type lifting hydraulic system for hoisting and conveying machine | |
| CN208279268U (en) | A kind of fork truck energy saving system with speed-regulating function | |
| CN205544318U (en) | Hoisting machinery matrix energy repayment transmission system | |
| CN202545431U (en) | Energy recycling-type hoisting hydraulic system for hoisting and conveying machinery | |
| CN107906063B (en) | Lifting operation equipment and power system thereof | |
| CN103166543A (en) | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor | |
| CN110282551A (en) | A kind of permanent magnet synchronous motor parallel Operation Control method of crane large vehicle walking | |
| CN202429902U (en) | Crane for permanent magnet electric ship | |
| CN102602852B (en) | Hydraulic hybrid stacking machine | |
| CN106440544A (en) | Wind-driven air conditioner applicable to various wind speeds | |
| CN207715448U (en) | Lift work equipment and its dynamical system | |
| CN207261227U (en) | Emulsion pump intelligent electric machine drive system | |
| CN105356509A (en) | Lifting machinery matrix type energy feedback transmission system | |
| CN203230641U (en) | High-emission open-type hydraulic system of non-excavation horizontal directional drilling machine | |
| CN201458471U (en) | Balanced energy saver of elevator | |
| CN207277396U (en) | Large-scale steel grasping machine hydraulic energy-saving system | |
| CN107630815A (en) | The air compressor machine of combination drive | |
| CN106115518B (en) | A kind of crane energy-saving hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |