CN207526786U - A kind of direct drive type electrohydraulic servo die hammer control system - Google Patents
A kind of direct drive type electrohydraulic servo die hammer control system Download PDFInfo
- Publication number
- CN207526786U CN207526786U CN201721357877.1U CN201721357877U CN207526786U CN 207526786 U CN207526786 U CN 207526786U CN 201721357877 U CN201721357877 U CN 201721357877U CN 207526786 U CN207526786 U CN 207526786U
- Authority
- CN
- China
- Prior art keywords
- valve
- reversal valve
- reversal
- inserted valve
- direct drive
- 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 - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of direct drive type electrohydraulic servo die hammer control system, fuel tank, dynamical element, control element and hydraulic cylinder including being sequentially communicated and being formed closed loop, wherein hydraulic cylinder includes rodless cavity and rod chamber, piston is provided in rod chamber, piston is fixedly connected with the tup of die hammer, the control element includes guide's valve system and direction valve system, wherein direction valve system includes strike stage direction valve group and carries and beat stage direction valve group, and guide's valve system beats stage direction valve group and be connected for controlling the dynamical element and strike stage direction valve group or carrying.The utility model provides a kind of direct drive type electrohydraulic servo die hammer control system, high energy efficiency, striking parameters are controllable and performance is stablized, and hydraulic loop structure is simple, is easily achieved integrated, modularized design, realize " no fluid pressure line " connection, reduce failure rate, the difficulty of maintaining is alleviated, improves the reliability of forging hammer.
Description
Technical field
The utility model is related to metal formings to forge technical field of hydraulic equipment, specifically a kind of direct-driving electric
Liquid servo die hammer control system.
Background technology
Die hammer plays indelible effect always in the development of forging industry pressure processing, experienced machinery
Hammer, steaming-pneumatic hammer, pneumatic hammer, Single arm development course.Since the forging shaping speed forged on hammer is fast, metal fluidity
It is good, so the forging quality formed is higher, it is used always so far in machinery industry.What use was wider at present is Single arm, is passed
The Single arm hydraulic system of system is more complicated, and circuit connection is inconvenient, and containing strike valve, the fever for making system is higher, needs to set
Independent cooling down link is counted, increases structural complexity and manufacture cost, and system capacity consume is excessive, it is less efficient.
In addition, traditional hydraulic die forging hammer is not very prominent for the control aspect of system, the control of speed when being hammered into shape for dropping hammer with rising,
The control of stability still have can developmental research space.
It directly drives volume control system and is also Direct Drive Electro-hydraulic Servo System or electro-hydraulic mixing executive device etc..It is combined
The flexibility of AC speed regulating and hydraulic pressure are contributed big two-fold advantage, the friendship that is combined into using AC frequency conversion and hydraulic volume speed governing
Rheology frequency volume speed-modulating loop is with speed-regulating range width, high resolution, good energy saving property, stain resistance is strong, is easily achieved computer
The series of advantages such as control.Volume control system is driven to be combined with die hammer by straight, be the efficient control realized to die hammer
The effective ways of system.
Utility model content
In order to solve deficiency of the prior art, the utility model provides a kind of direct drive type electrohydraulic servo die hammer control system
System, high energy efficiency, striking parameters are controllable and performance is stablized, and hydraulic loop structure is simple, is easily achieved integrated, modularization sets
Meter realizes " no fluid pressure line " connection, reduces failure rate, alleviate the difficulty of maintaining, improve the reliable of forging hammer
Property.
To achieve these goals, the concrete scheme that the utility model uses for：
A kind of direct drive type electrohydraulic servo die hammer control system, fuel tank, power member including being sequentially communicated and being formed closed loop
Part, control element and hydraulic cylinder, wherein hydraulic cylinder include rodless cavity and rod chamber, are provided with piston in rod chamber, piston with
The tup of die hammer is fixedly connected, and the control element includes guide's valve system and direction valve system, wherein direction valve system packet
It includes strike stage direction valve group and carries and beat stage direction valve group, guide's valve system is used to control the dynamical element and strike stage
Direction valve group carries and beats stage direction valve group and be connected.
Strike stage direction valve group includes the first inserted valve and third inserted valve, the first inserted valve and third inserted valve
It is two-way plug-in valve, the A1 ends of the first inserted valve are connected with the rod chamber, B1 ends and the fuel tank of the first inserted valve
It is connected, the A3 ends of third inserted valve are connected with the pressure end of the dynamical element, B3 ends and the nothing of third inserted valve
Rod cavity is connected.
Described carry beats stage direction valve group and includes the second inserted valve and the 4th inserted valve, the second inserted valve and the 4th inserted valve
It is two-way plug-in valve, the A2 ends of the second inserted valve are connected with the pressure end of the dynamical element, the B2 ends of the second inserted valve
Be connected with the rod chamber, the A4 ends of the 4th inserted valve are connected with the rodless cavity, the B4 ends of the 4th inserted valve with it is described
Fuel tank is connected.
Guide's valve system includes the first reversal valve, the second reversal valve, third reversal valve and the 4th reversal valve, and first changes
It is two-bit triplet solenoid directional control valve to valve, the second reversal valve, third reversal valve and the 4th reversal valve, the first reversal valve, second
The oil inlet of reversal valve, third reversal valve and the 4th reversal valve is connected with the pressure end of dynamical element, the first reversal valve
Control port is connected with the C1 ends of the first inserted valve, and the oil return opening of the first reversal valve is connected with the fuel tank, the second reversal valve
Control port connected with the C2 ends of the second inserted valve, the oil return opening of the second reversal valve is connected with fuel tank, third reversal valve
Control port is connected with the C3 ends of third inserted valve, and the oil return opening of third reversal valve is connected with fuel tank, the control of the 4th reversal valve
Liquefaction mouth is connected with the C4 ends of the 4th inserted valve, and the oil return opening of the 4th reversal valve is connected with fuel tank.
First is provided between the A4 ends and the rodless cavity of the B3 ends of the third inserted valve and the 4th inserted valve
Precursor overflow valve is provided with second first between the A1 ends of first inserted valve and the B2 ends of the second inserted valve and the rod chamber
Lead overflow valve.
The fuel tank is also connected there are one hydraulic motor, and hydraulic motor is drivingly connected there are one generator, and generator is also electric
It is connected with accumulation of energy indirect conversion device.
The accumulation of energy indirect conversion device includes energy storage device, and energy storage device is also electrically connected with external powering device.
The dynamical element includes constant displacement pump and servo motor, and the wherein oil inlet end of constant displacement pump is connected with the fuel tank,
The oil-feed port of constant displacement pump is connected with the control element, and servo motor is electrically connected with the accumulation of energy indirect reformer device.
The controller and acquisition elements of electrical connection are further included, acquisition elements include acquiring oil pressure in the rodless cavity
First pressure sensor, for the second pressure sensor that acquires oil pressure in the rod chamber and for detecting the piston movement
The displacement sensor of distance, controller are electrically connected with the accumulation of energy indirect conversion device.
Advantageous effect：
1st, the utility model drives constant displacement pump using servo motor, is changed by the rotating speed of Serve Motor Control constant displacement pump
The flow and pressure quantitatively exported realizes that flow system flow adjusts to reach energy saving purpose；
2nd, when forging hammer is stopped, servo motor and pump also stop therewith, without prime mover（Mainly motor）Fortune
Capable loss in efficiency and dry run loss；
3rd, it is used cooperatively using between the inserted valve of four big flows and four two-bit triplet solenoid directional control valves, strike stage
It direction valve group and carries and beats stage direction valve group and do not interfere with each other, switch speed is fast；
4th, during hitting or carrying hammer, always by hydraulic motor, driving hydraulic motor turns the hydraulic oil of oil return box
It is dynamic, mechanical energy is converted into electric energy using generator, the energy that generator generates constantly is conveyed to accumulation of energy indirect conversion device, can
It powers for servo motor and controller, prepares for next action, so that energy is recycled, and improves energy profit
With rate；
5th, essential hydraulic accumulator part in conventional electro-hydraulic hammer is eliminated, installation space is saved, makes structure more
Step up to gather；
6th, pressure sensor, pressure sensor feedback signal to controller, control are respectively equipped on in-line and oil return line
Device processed exports control signal and gives servo-driver control motor rotation, forms the pressure closed loop control to two oil circuits；Hydraulic cylinder
Piston rod is correspondingly arranged displacement sensor, displacement sensor feedback signal to controller, and controller exports control signal to servo
Driver control motor rotates, and forms the position-force control to piston rod；
7th, level of integrated system is high, can realize modularized design, greatly reduces pipeline connection, therefore reduces flow damage
It loses, greatly eliminates influence of the pipeline dynamic to hydraulic system；
8th, constant displacement pump cheap, that reliability is high can be selected, therefore hydraulic oil and filtering requirement are reduced, is reduced
The abrasion of pump and the noise of system improve the reliability of service life and system.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the flow chart of the accumulation of energy indirect reformer process of the utility model.
Reference numeral：1st, constant displacement pump, 2, servo motor, 3, hydraulic motor, 4, generator, the 501, first inserted valve, 502,
Second inserted valve, 503, third inserted valve, the 504, the 4th inserted valve, the 601, first reversal valve, the 602, second reversal valve, 603,
Three reversal valves, the 604, the 4th reversal valve, the 701, first electromagnet, the 702, second electromagnet, the 703, third electromagnet, the 704, the 4th
Electromagnet, the 801, first precursor overflow valve, the 802, second precursor overflow valve, 9, hydraulic cylinder, 901, rodless cavity, 902, rod chamber,
903rd, piston, 10, tup, 11, fuel tank, 12, displacement sensor, 13, first pressure sensor, 14, second pressure sensor,
15th, controller, 16, accumulation of energy indirect conversion device.
Specific embodiment
The embodiment of the utility model is illustrated below according to attached drawing.
As shown in Figure 1, a kind of direct drive type electrohydraulic servo die hammer control system, the oil including being sequentially communicated and being formed closed loop
Case 11, dynamical element, control element and hydraulic cylinder 9, wherein hydraulic cylinder 9 include rodless cavity 901 and rod chamber 902, in rod chamber
Piston 903 is provided in 902, piston 903 is fixedly connected with the tup 10 of die hammer, and control element includes guide's valve system and side
To valve system, wherein direction valve system includes strike stage direction valve group and carries to beat stage direction valve group, and guide's valve system is used for
Control dynamical element and strike stage direction valve group carries and beats stage direction valve group and be connected.
Dynamical element includes constant displacement pump 1 and servo motor 2, and the wherein oil inlet end of constant displacement pump 1 is connected with fuel tank 11, quantitative
The oil-feed port of pump 1 is connected with control element, and servo motor 2 is electrically connected with accumulation of energy indirect reformer device.It is driven using servo motor 2
Constant displacement pump 1 controls the rotating speed of constant displacement pump 1 by servo motor 2 to change the pressure and flow that constant displacement pump exports, realizes system stream
Amount adjusts to reach energy saving purpose.
Strike stage direction valve group includes the first inserted valve 501 and third inserted valve 503, the first inserted valve 501 and third
Inserted valve 503 is two-way plug-in valve, and the A1 ends of the first inserted valve 501 are connected with rod chamber 902, the first inserted valve 501
B1 ends are connected with fuel tank 11, and the A3 ends of third inserted valve 503 are connected with the pressure end of dynamical element, third inserted valve 503
B3 ends be connected with rodless cavity 901.Carry beat stage direction valve group include the second inserted valve 502 and the 4th inserted valve 504, second
502 and the 4th inserted valve 504 of inserted valve is two-way plug-in valve, the A2 ends of the second inserted valve 502 and the pressure end of dynamical element
It is connected, the B2 ends of the second inserted valve 502 are connected with rod chamber 902, A4 ends and 901 phase of rodless cavity of the 4th inserted valve 504
Connection, the B4 ends of the 4th inserted valve 504 are connected with fuel tank 11.The B3 ends of third inserted valve 503 and the A4 of the 4th inserted valve 504
The first precursor overflow valve 801 is provided between end and rodless cavity 901, the A1 ends of the first inserted valve 501 and the second inserted valve 502
The second precursor overflow valve 802, the first precursor overflow valve 801 and the second precursor overflow valve are provided between B2 ends and rod chamber 902
802 as the safety protective valve of oil circuit.
Guide's valve system includes the first reversal valve 601, the second reversal valve 602,603 and the 4th reversal valve of third reversal valve
604, the first reversal valve 601, the second reversal valve 602,603 and the 4th reversal valve 604 of third reversal valve are two-bit triplet electromagnetism
Reversal valve, the first reversal valve 601, the second reversal valve 602,603 and the 4th reversal valve 604 of third reversal valve oil inlet with it is dynamic
The pressure end of power element is connected, and the control port of the first reversal valve 601 is connected with the C1 ends of the first inserted valve 501, and first changes
It is connected to the oil return opening of valve 601 with fuel tank 11, the control port of the second reversal valve 602 and the C2 ends of the second inserted valve 502 connect
Logical, the oil return opening of the second reversal valve 602 is connected with fuel tank 11, control port and the third inserted valve 503 of third reversal valve 603
The connection of C3 ends, the oil return opening of third reversal valve 603 is connected with fuel tank 11, the control port and the 4th of the 4th reversal valve 604
The C4 ends connection of inserted valve 504, the oil return opening of the 4th reversal valve 604 are connected with fuel tank 11.
Fuel tank 11 is also connected there are one hydraulic motor 3, and hydraulic motor 3 is drivingly connected there are one generator 4, and generator 4 is gone back
It is electrically connected with accumulation of energy indirect conversion device 16, accumulation of energy indirect conversion device 16 includes energy storage device, and energy storage device is super capacitor, energy storage
Device is also electrically connected with external powering device.
The controller and acquisition elements of electrical connection are further included, acquisition elements include acquiring oil pressure in rodless cavity 901
First pressure sensor 13 is moved for the second pressure sensor 14 that acquires oil pressure in rod chamber 902 and for detecting piston 903
The displacement sensor 12 of dynamic distance, controller 15 are electrically connected with accumulation of energy indirect conversion device 16.
Tup 10 at work, drives constant displacement pump 1 by servo motor 2 first, and hydraulic pressure is extracted from fuel tank 11 by constant displacement pump 1
Then hydraulic oil is delivered to the A2 ends of the second inserted valve 502 by oil, and the hydraulic oil that output pressure is p, flow is q, third is inserted
The A3 ends of valve 503 are filled, and the C2 ends of the second inserted valve 502, the C3 ends of third inserted valve 503 are generated by four reversal valves
Pressure p, at this time four reversal valves be in closed state.
When tup 10 carries out strike action, dynamical element is made to pass through strike stage direction valve group by guide's valve system first
It is connected with hydraulic cylinder 9, specific regulative mode is the first electromagnet 701 and third reversal valve 603 to the first reversal valve 601
Third electromagnet 703 power, make the first reversal valve 601 and third reversal valve 603 be in left position work, and then make the first inserting
The C1 ends of valve 501 and the C3 ends of third inserted valve 503 are connected with fuel tank 11, and the first inserted valve 501 and third inserted valve 503 are beaten
It opens, hydraulic oil is flowed by B3 ends in rodless cavity 901 from the A3 ends of third inserted valve 503, and then generates pressure to piston 903
Power pushes piston 903 to stretch out and tup 10 is driven to move down, is hit.At the same time, originally in rod chamber 902
Hydraulic oil pass sequentially through the A1 ends of the first inserted valve 501 and B1 ends are flowed to fuel tank 11, liquid is first into flow process
Hydraulic motor 3 is driven to act, and then generator 4 is driven to generate electricity by hydraulic motor 3 in pressure motor 3, the electric energy storage that generator 4 is sent out
It is stored in accumulation of energy indirect conversion device 16.After the completion of strike action, the first electromagnet 701 and third electromagnet 703 power off, and first changes
It is closed to valve 601 and third reversal valve 603.
When tup 10 carry and beats action, dynamical element is made to pass through to carry and beat stage direction valve group by guide's valve system first
It is connected with hydraulic cylinder 9, specific regulative mode is to the second electromagnet 702 of the second reversal valve 602 and the 4th reversal valve 604
The 4th electromagnet 704 power, make the second reversal valve 602 and the 4th reversal valve 604 be in left position work, and then make the second inserting
The C2 ends of valve 502 and the C4 ends of the 4th inserted valve 504 are connected with fuel tank 11, and the second inserted valve 502 and the 4th inserted valve 504 are beaten
It opens, hydraulic oil is flowed by the A2 ends and B2 ends of the second inserted valve 502 in rod chamber 902, and piston 903 is pushed to reset to hydraulic pressure
In cylinder 9, and then tup 10 is driven to reset, completion, which carries, beats.At the same time, the hydraulic oil in rodless cavity 901 leads to successively originally
The A4 ends and B4 ends for crossing the 4th inserted valve 504 are flowed to fuel tank 11, are first into flow process in hydraulic motor 3 and are driven liquid
Pressure motor 3 acts, and then generator 4 is driven to generate electricity by hydraulic motor 3, and the electric energy that generator 4 is sent out switches through between being stored into accumulation of energy
In parallel operation 16.It carries after beating and finishing, the second electromagnet 702 and the 4th electromagnet 704 power off, and the second reversal valve 602 and the 4th changes
It is closed to valve 604.
The utility model is used cooperatively using between the inserted valve of four big flows and four two-bit triplet solenoid directional control valves,
It strike stage direction valve group and carries and beats stage direction valve group and do not interfere with each other, switch speed is fast.After completing forging, tup 10 stops
Only, servo motor 2 and constant displacement pump 1 are also stopped therewith, without prime mover（Mainly motor）The loss in efficiency of operation and
Dry run is lost.
As shown in Fig. 2, hydraulic oil is by the detailed process that hydraulic motor 3 drives generator 4 to generate electricity：First by generator
4 generate alternating current, and rectification is then carried out to alternating current and obtains direct current, and export stable direct current after filtered and voltage stabilizing
Electric energy is finally stored into energy storage device by electricity, and the electric energy of storage is next for powering to controller and servo motor 2
Action prepares, so that energy is recycled, and improves energy utilization rate.Because the limitation of generating efficiency, generated energy
It is difficult to fully meet the power demand of controller and servo motor 2, therefore increase externally fed equipment, externally fed equipment continues
It persistently charges to energy storage device, without directly powering to controller and servo motor 2, is supplied there is no need to additional in outside
The device switched between electric equipment and energy storage device, so as to reduce the complexity of device.
Tthe utility model system integrated level is high, can realize modularized design, greatly reduces pipeline connection, therefore reduces
Flow loss greatly eliminates influence of the pipeline dynamic to hydraulic system.It can also select cheap, reliability is high to quantify
Pump, therefore hydraulic oil and filtering requirement are reduced, reduce the abrasion of pump and the noise of system, improve service life and system
Reliability.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (9)
1. a kind of direct drive type electrohydraulic servo die hammer control system, the fuel tank including being sequentially communicated and being formed closed loop（11）, power
Element, control element and hydraulic cylinder（9）, wherein hydraulic cylinder（9）Including rodless cavity（901）And rod chamber（902）, in rod chamber
（902）Inside it is provided with piston（903）, piston（903）With the tup of die hammer（10）It is fixedly connected, it is characterised in that：The control
Element processed includes guide's valve system and direction valve system, and wherein direction valve system includes strike stage direction valve group and carries the stage of beating
Direction valve group, guide's valve system beat stage direction valve group for controlling the dynamical element and strike stage direction valve group or carrying
It is connected.
2. a kind of direct drive type electrohydraulic servo die hammer control system as described in claim 1, it is characterised in that：The strike rank
Duan Fangxiang valve groups include the first inserted valve（501）With third inserted valve（503）, the first inserted valve（501）With third inserted valve
（503）It is two-way plug-in valve, the first inserted valve（501）A1 ends and the rod chamber（902）It is connected, the first inserted valve
（501）B1 ends and the fuel tank（11）It is connected, third inserted valve（503）A3 ends and the pressure end phase of the dynamical element
Connection, third inserted valve（503）B3 ends and the rodless cavity（901）It is connected.
3. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 2, it is characterised in that：Described carry beats rank
Duan Fangxiang valve groups include the second inserted valve（502）With the 4th inserted valve（504）, the second inserted valve（502）With the 4th inserted valve
（504）It is two-way plug-in valve, the second inserted valve（502）A2 ends be connected with the pressure end of the dynamical element, second insert
Fill valve（502）B2 ends and the rod chamber（902）It is connected, the 4th inserted valve（504）A4 ends and the rodless cavity（901）
It is connected, the 4th inserted valve（504）B4 ends and the fuel tank（11）It is connected.
4. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 3, it is characterised in that：The pilot valve
System includes the first reversal valve（601）, the second reversal valve（602）, third reversal valve（603）With the 4th reversal valve（604）, first
Reversal valve（601）, the second reversal valve（602）, third reversal valve（603）With the 4th reversal valve（604）It is two-bit triplet electromagnetism
Reversal valve, the first reversal valve（601）, the second reversal valve（602）, third reversal valve（603）With the 4th reversal valve（604）Oil inlet
Mouth is connected with the pressure end of dynamical element, the first reversal valve（601）Control port and the first inserted valve（501）C1 ends
Connection, the first reversal valve（601）Oil return opening and the fuel tank（11）It is connected, the second reversal valve（602）Control port with
Second inserted valve（502）C2 ends connection, the second reversal valve（602）Oil return opening and fuel tank（11）It is connected, third reversal valve
（603）Control port and third inserted valve（503）C3 ends connection, third reversal valve（603）Oil return opening and fuel tank（11）
It is connected, the 4th reversal valve（604）Control port and the 4th inserted valve（504）C4 ends connection, the 4th reversal valve（604）'s
Oil return opening and fuel tank（11）It is connected.
5. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 3, it is characterised in that：The third is inserted
Fill valve（503）B3 ends and the 4th inserted valve（504）A4 ends and the rodless cavity（901）Between be provided with the first guide
Overflow valve（801）, first inserted valve（501）A1 ends and the second inserted valve（502）B2 ends and the rod chamber（902）
Between be provided with the second precursor overflow valve（802）.
6. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 3, it is characterised in that：The fuel tank
（11）Also there are one hydraulic motors for connection（3）, hydraulic motor（3）Generator there are one being drivingly connected（4）, generator（4）It is also electric
It is connected with accumulation of energy indirect conversion device（16）.
7. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 6, it is characterised in that：Between the accumulation of energy
Switch through parallel operation（16）Including energy storage device, energy storage device is also electrically connected with external powering device.
8. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 6, it is characterised in that：The power member
Part includes constant displacement pump（1）And servo motor（2）, wherein constant displacement pump（1）Oil inlet end and the fuel tank（11）It is connected, constant displacement pump
（1）Oil-feed port be connected with the control element, servo motor（2）With the accumulation of energy indirect conversion device（16）Electrical connection.
9. a kind of direct drive type electrohydraulic servo die hammer control system as claimed in claim 6, it is characterised in that：It further includes and is electrically connected
The controller and acquisition elements connect, acquisition elements include acquiring the rodless cavity（901）The first pressure sensing of interior oil pressure
Device（13）, for acquiring the rod chamber（902）The second pressure sensor of interior oil pressure（14）With for detecting the piston
（903）The displacement sensor of displacement distance（12）, controller（15）With the accumulation of energy indirect conversion device（16）Electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357877.1U CN207526786U (en) | 2017-10-20 | 2017-10-20 | A kind of direct drive type electrohydraulic servo die hammer control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357877.1U CN207526786U (en) | 2017-10-20 | 2017-10-20 | A kind of direct drive type electrohydraulic servo die hammer control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526786U true CN207526786U (en) | 2018-06-22 |
Family
ID=62569016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721357877.1U Expired - Fee Related CN207526786U (en) | 2017-10-20 | 2017-10-20 | A kind of direct drive type electrohydraulic servo die hammer control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642511A (en) * | 2017-10-20 | 2018-01-30 | 河南科技大学 | A kind of direct drive type electrohydraulic servo die hammer control system |
-
2017
- 2017-10-20 CN CN201721357877.1U patent/CN207526786U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642511A (en) * | 2017-10-20 | 2018-01-30 | 河南科技大学 | A kind of direct drive type electrohydraulic servo die hammer control system |
| CN107642511B (en) * | 2017-10-20 | 2024-01-19 | 河南科技大学 | Direct-drive electrohydraulic servo die forging hammer control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102587444B (en) | Oil hybrid system for excavator with energy differential recovery | |
| CN107420384A (en) | Lifting device gravitional force P-V storage system | |
| CN108425893B (en) | Hydraulic system of distributed direct-driven excavator with servo motor driven double variable pumps | |
| CN105156259B (en) | A kind of wave-energy power generation Hydraulic Power Transmission System of multistage active negotiation | |
| CN108591144B (en) | Hydraulic system of motor-driven double-dosing pump double-accumulator distributed direct-drive excavator | |
| CN102877495A (en) | Hybrid power system for recovering potential energy of movable arm of excavating machine | |
| CN103552457B (en) | Oil/electric hybrid rotary drilling rig driving system | |
| CN108517904B (en) | Hydraulic excavator driven by liquid and electricity in hybrid mode | |
| CN207526786U (en) | A kind of direct drive type electrohydraulic servo die hammer control system | |
| CN100516519C (en) | General beam type secondary regulation hydraulic energy saving system of oil pump | |
| CN108661863A (en) | A kind of multistage hydraulic type wind power generating set | |
| CN104695852B (en) | There is the coal bed gas drilling machine of mixed power plant and multi-motor driving | |
| CN202545421U (en) | Self-adaptive power recovery testing table for hydraulic pump | |
| CN104454715A (en) | Novel secondary regulation system based on electrical control | |
| CN107503395A (en) | Throttling volume directly drives compound oil inlet and outlet independent control electrohydraulic system | |
| CN203146212U (en) | Wave power generation system | |
| CN109267599A (en) | The excavator dynamical system that distributed two parallel pumps directly drive | |
| CN107642511A (en) | A kind of direct drive type electrohydraulic servo die hammer control system | |
| CN113958544A (en) | Engineering machinery electro-hydraulic composite energy storage driving system and control method thereof | |
| CN208279268U (en) | A kind of fork truck energy saving system with speed-regulating function | |
| CN107524187A (en) | Rotary motion braking energy liquid electricity mixing recycling system | |
| CN202645426U (en) | Push-and-pull hydraulic system for horizontal directional drilling machine | |
| CN108953309A (en) | A kind of energy recovery and reuse hydraulic system | |
| CN202745096U (en) | Hybrid power system capable of recycling potential energy of movable arm of excavator | |
| Minav et al. | Electric energy recovery system efficiency in a hydraulic forklift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20181020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |