CN206449056U - Dual input servo valve dual input characteristic test frock and test system - Google Patents
Dual input servo valve dual input characteristic test frock and test system Download PDFInfo
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- CN206449056U CN206449056U CN201620999284.4U CN201620999284U CN206449056U CN 206449056 U CN206449056 U CN 206449056U CN 201620999284 U CN201620999284 U CN 201620999284U CN 206449056 U CN206449056 U CN 206449056U
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- dual input
- servo valve
- piston rod
- displacement transducer
- characteristic test
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Abstract
The utility model is related to a kind of dual input servo valve dual input characteristic test frock and test system.The utility model during detection subject dual input servo valve, two electric currents and displacement curve data can be once obtained simultaneously, make testing result more accurate using piston rod displacement transducer (5 3) and feedback displacement transducer (5 4)；On the machine feedback spring that the position of piston rod (6 1) is connected to subject dual input servo valve by the servo valve connecting rod (5 10) fallen on conical surface bar (6 7), subject dual input servo valve internal closed loop is formed；Using automation equipments such as industrial computer, data collecting cards, compared with prior art draws curve, manual analysis processing data using XY recorders, it is of great significance to improving the test accuracy of dual input servo valve dual input property dependent parameter, high efficiency tool.
Description
Technical field
The utility model is related to Electrohydraulic Servo Valve Characteristics technical field of measurement and test, more particularly to a set of to be watched for testing dual input
Take valve dual input characteristic test frock and test system.
Background technology
In electrohydraulic servo-controlling system, electrohydraulic servo valve as system core parts, by electric part and hydraulic section
Divide and connect, the conversion and hydraulic pressure for realizing electro-hydraulic signal are amplified, and its performance quality directly decides electrohydraulic servo-controlling system
Performance.Dual input servo valve is a kind of special shape of electrohydraulic servo valve, control, metallurgy, Aero-Space and military affairs in position
Deng field, vital effect is served.Dual input servo valve dual input characteristic test system, is test dual input servo valve
The visual plant of performance, plays an important role in the design, debugging and examination in dual input servo valve.
At present, dual input servo valve dual input characteristic test system is tested in the performance parameter to dual input servo valve
During there is automaticity low, ageing equipment, the problem of repairing frequent.Dual input servo valve dual input characteristic is debugged every time
Before test system, substantial amounts of subtest work need to be done.Such as the performance parameter of dual input servo valve is carried out using XY recorders
During test, recorder etc., and the test data that must also be recorded by manual analysis, processing XY recorders need to be adjusted first
With corresponding dual input servo valve characterisitic parameter, greatly, measuring accuracy is low for workload.
Utility model content
For defect present in prior art, the utility model provides a kind of dual input servo valve dual input characteristic test
Frock and test system, the test fixture include piston rod displacement transducer and feedback displacement transducer, detection subject lose-lose
When entering servo valve, two electric currents and displacement curve data can be once obtained simultaneously, make testing result more accurate；The test system
With reference to the control system based on industrial computer and data acquisition, automatic test degree can be improved, dual input is tested exactly and is watched
The performance parameter of valve is taken, the dual input characteristic of computer automated testing electrohydraulic servo valve is realized.
To achieve the above objectives, the utility model provides a kind of test fixture of dual input servo valve dual input characteristic, bag
Include：Base 5-11, hydraulic actuator 5-1, piston rod displacement transducer 5-3 and feedback displacement transducer 5-4；
Hydraulic actuator 5-1 is fixedly arranged on base 5-11, including hydraulic cylinder body 6-9, and piston 6-3 is set in hydraulic cylinder, living
Plug 6-3 will be divided into two chambers inside hydraulic cylinder body 6-9：It is fixed with hydraulic cylinder A chambers 6-2 and hydraulic cylinder B chamber 6-4, piston 6-3
Two ends are stretched out outside hydraulic cylinder body 6-9 and perpendicular to piston 6-3 piston rod 6-1, piston rod 6-1 one end (such as right-hand member)
It is set to conical surface bar 6-7；
Piston rod displacement transducer 5-3 is parallel to hydraulic actuator 5-1 and is fixedly arranged on base 5-11, and piston rod displacement is passed
The measurement bar 5-8 of sensor is fixedly connected with the piston rod 6-1 of homonymy conical surface bar 6-7 one end；
Feedback displacement transducer 5-4 is fixed on the vertical direction of the conical surface bar 6-7 directions of motion such as vertical direction, is fed back
The measurement bar 6-10 of displacement transducer is in contact with the conical surface bar 6-7 conical surface；I.e. by the contact with the conical surface bar 6-7 conical surfaces, instead
Feedback displacement transducer 5-4 measures the displacement in the vertical direction of the conical surface bar 6-7 directions of motion, because the gradient of the conical surface is to determine
, and then draw piston rod 6-1 horizontal displacements indirectly；
Servo valve connecting rod 5-10, its one end are provided with the vertical direction such as horizontal direction of the conical surface bar 6-7 directions of motion
For being connected with subject dual input servo valve machine feedback spring, the other end is in contact with the conical surface bar 6-7 conical surface.
In above-mentioned test fixture, the measurement bar 5-8 of piston rod displacement transducer passes through connecting rod 5-7 and piston rod 6-1
One end be connected.
In above-mentioned test fixture, connecting rod 5-7 one end passes through locking nut a5-6 and piston rod displacement transducer
Measurement bar 5-8 is fixedly connected；
And/or, the connecting rod 5-7 other end is fixedly connected by locking nut b5-9 with piston rod 6-1 one end.
In above-mentioned test fixture, the collar supporting with locking nut b5-9 is provided between piston rod 6-1 and connecting rod 5-7
6-8。
In above-mentioned test fixture, fixed bearing 5-5 on base 5-11, bearing 5-5 feeds back across hydraulic cylinder body 6-9
Displacement transducer 5-4 is installed on bearing 5-5；
And/or, servo valve transfer block 5-12 is set on base 5-11, for subject dual input servo valve to be fixedly mounted；
And/or, piston rod displacement transducer 5-3 is fixed on base 5-11 by Ω types seat 5-2.
In above-mentioned test fixture, sleeve 6-6 is set on bearing 5-5, feedback displacement transducer 5-4 is installed in sleeve 6-6；
And/or, servo valve connecting rod 5-10 passes through bearing 5-5, and is fixed on bearing 5-5.
In above-mentioned test fixture, sleeve 6-6 top open part sets sleeve cap 6-5, using threaded connection.
The utility model also provides a kind of test system of dual input servo valve dual input characteristic, including any of the above-described described
Dual input servo valve dual input characteristic test frock.
In above-mentioned test system, the dual input servo valve dual input characteristic test system includes：Mechanical test platform system
System, energy resource system and TT＆C system；
The mechanical test platform system includes：If the testing stand of operating table surface and the dual input in operating table surface
Servo valve dual input characteristic test frock；
The energy resource system includes oil circuit and is provided with supervising device (such as pressure sensor, pressure gauge, temperature sensor, temperature
Spend meter, flowmeter, liquid level gauge) hydraulic power unit,
The dual input servo valve dual input characteristic test that hydraulic power unit passes through oil circuit and the mechanical test platform system
Oil inlet and the oil return opening connection of dual input servo valve are tested in frock；
The TT＆C system includes industrial computer, the man-machine interface being connected respectively with industrial computer, DA cards and data collecting card,
In the dual input servo valve dual input characteristic test frock of data collecting card and the mechanical test platform system
The signal output part connection of piston rod displacement transducer (5-3) and feedback displacement transducer (5-4),
Supervising device in the energy resource system on oil circuit is connected with the data collecting card；
The analog output channel of DA cards and the dual input servo valve dual input characteristic of the mechanical test platform system
The coil connection for the subject dual input servo valve installed in test fixture.
In above-mentioned test system,
The mechanical test platform main function of system is to install subject dual input servo valve and dual input servo valve dual input
There is provided can carry out the platform of hydraulic pressure, flow and direction controlling and be there is provided specific hydraulic circuit for characteristic test frock
Input signal and output signal are connected between providing the parts in operating platform, the mechanical test platform system by oil circuit；
The energy resource system meets the requirement of the hydraulic pressure and flow of the mechanical test platform system and solves fuel feeding
Pressure stability sex chromosome mosaicism；
The TT＆C system mainly applies control signal to subject dual input servo valve, gathers the mechanical test platform system
The output signal of system, carries out the data processings such as display, the curve picture of related data, test signal (such as electric current, position is shown in real time
Move) and test event (such as electric current-displacement relation curve), and output control signal can be set.
In above-mentioned test system, in the TT＆C system,
The man-machine interface is mounted to the test software on industrial computer, and its function is：For being handed over operating personnel
Mutually, facilitate operating personnel set subject dual input servo valve loading instruction, and the data collected can be handled with
Show, additionally it is possible to carry out data storage the formal intuition of curve map；
The DA cards are analog output unit, are connected with industrial computer, and its function is：The digital command letter that industrial computer is sent
Number (such as amplitude and frequency controlled loading signal) is converted into analog output, for being controlled to subject dual input servo valve
System；
The data collecting card, is connected with industrial computer, and its function is：Output for gathering the mechanical test platform system
Monitoring signal in signal and the energy resource system on oil circuit, and send industrial computer to；
The industrial computer is master controller, according to the instruction of the man-machine interface, send digital command signal (such as amplitude and
Frequency controlled loading signal) DA cards are given, the mechanical test platform system output signal of data collecting card collection is collected, by institute
Man-machine interface is stated to carry out data processing and draw test curve.
The beneficial effects of the utility model are as follows：
1st, the test system of dual input servo valve dual input characteristic provided by the utility model, employs industrial computer, number
According to automation equipments such as capture cards, compared with prior art draws curve, manual analysis processing data using XY recorders, to carrying
The test accuracy of high dual input servo valve dual input property dependent parameter, high efficiency tool are of great significance.
2nd, dual input servo valve dual input characteristic test frock provided by the utility model, using piston rod displacement sensing
Device and feedback displacement transducer, during detection subject dual input servo valve, two electric currents and displacement curve number can be once obtained simultaneously
According to making testing result more accurate.
3rd, the position of piston rod is connected to subject pair by the utility model by the servo valve connecting rod fallen on conical surface bar
On the machine feedback spring for inputting servo valve, subject dual input servo valve internal closed loop is formed.
Brief description of the drawings
The utility model has drawings described below：
Fig. 1 is the schematic diagram A of the utility model test system.
Fig. 2 is the schematic diagram B of the utility model test system.
Fig. 3 is the overall construction drawing of testing stand in the utility model test system.
Fig. 4 is dual input characteristic curve schematic diagram.
Fig. 5 is the top view of one test fixture of utility model.
Fig. 6 is profile at test fixture A-A shown in utility model Fig. 5.
Fig. 7 is testing stand test fixture side view in the utility model test system.
In figure：
1 is I feedback displacement transducer, and 2 be I hydraulic actuator, and 3 be I piston rod displacement transducer, and 4 be II feedback displacement
Sensor, 5 be II hydraulic actuator, and 6 be II piston rod displacement transducer, and 7 be III feedback displacement transducer, and 8 be that III hydraulic pressure is made
Dynamic device, 9 be III piston rod displacement transducer；
3-1 is 1# test fixtures (i.e. station I), and 3-2 is 2# test fixtures (i.e. station II), and 3-3 is state displaying panel,
3-4 is 3# test fixtures (i.e. station III), and 3-5 is boot；
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1, dual input servo valve dual input characteristic test frock and test system
First, structure and composition
As shown in figs. 1-7, the high-precision automatic test for the dual input servo valve dual input characteristic that the utility model is provided
System includes：Including mechanical test platform system, energy resource system and TT＆C system；
1st, mechanical test platform system includes：
Testing stand provided with operating table surface and three dual input servo valve dual input characteristic tests in operating table surface
Frock；
As shown in figure 3, testing stand uses stainless steel stage body, inside is tower structure, and profile is stainless steel plate, full envelope
Close, and set movable cabinet door, testing stand bottom sets monoblock type food tray (oil circuit being connected with energy resource system hydraulic power unit), experiment
Platform oil circuit controls for No leakage.Set in the testing stand operating table surface (is used for perpendicular to the state displaying panel 3-3 of operating table surface
Supervising device such as pressure gauge, thermometer, flowmeter, the liquid level gauge for showing each oil circuit in energy resource system are installed), operating table surface is divided into
The boot 3-5 connected for oil circuit.Testing stand overall length 1400mm, beam overall 800mm, total high 1400mm.Testing stand operating table surface
High 800mm, the wide 400mm of operating table surface.Three equirotal T-slots are distributed with the testing stand operating table surface, T-slot is opened
Centre-to-centre spacing between mouth size and groove and groove meets the requirement of T-slot standard, and T-slot length is 400mm, is highly 30mm, width is
350mm.1# test fixtures 3-1 (station I), 2# test fixtures 3-2 (station II) and 3# test fixtures 3- are respectively arranged on T-slot
4 (stations III).
Each test fixture (Fig. 5-7) includes：
Base 5-11, hydraulic actuator 5-1, piston rod displacement transducer 5-3 (are LVDT
(Linear.Variable.Differential.Transformer) linear variable difference transformer formula linear displacement transducer)
With feedback displacement transducer 5-4 (being back springing type linear displacement transducer)；
Hydraulic actuator 5-1 (critical component for implementing active control) is fixedly arranged on base 5-11, including hydraulic cylinder body
Piston 6-3 is set in 6-9, hydraulic cylinder, piston 6-3 will be divided into two chambers inside hydraulic cylinder：Hydraulic cylinder A chambers 6-2 and hydraulic cylinder B chamber 6-4,
Two ends are fixed with piston 6-3 to stretch out outside hydraulic cylinder body 6-9 and perpendicular to piston 6-3 piston rod 6-1, piston
Bar 6-1 right-hand members are set to conical surface bar 6-7；
Piston rod displacement transducer 5-3 is fixedly arranged on base 5-11 parallel to hydraulic actuator 5-1, and by Ω types seat 5-2
On, the measurement bar 5-8 of piston rod displacement transducer is fixed by the piston rod 6-1 of connecting rod 5-7 and homonymy conical surface bar 6-7 one end
Connection；Connecting rod 5-7 one end is fixedly connected by locking nut a5-6 with the measurement bar 5-8 of piston rod displacement transducer；Even
The extension bar 5-7 other end is fixedly connected by locking nut b5-9 with piston rod 6-1 one end；Piston rod 6-1 and connecting rod 5-7
Between be provided with the collar 6-8 supporting with locking nut b5-9；
The vertical direction that feedback displacement transducer 5-4 is fixed at the conical surface bar 6-7 directions of motion (is vertical in the present embodiment
Direction) on, the measurement bar 6-10 of feedback displacement transducer is in contact with the conical surface bar 6-7 conical surface；Fixed bearing on base 5-11
5-5, bearing 5-5 are installed on bearing 5-5 across hydraulic cylinder body 6-9, feedback displacement transducer 5-4；Sleeve is set on bearing 5-5
6-6, feedback displacement transducer 5-4 is installed in sleeve 6-6；Sleeve 6-6 top open part sets sleeve cap 6-5, using screw thread
Connection；
Servo valve connecting rod is provided with the vertical direction (being horizontal direction in the present embodiment) of the conical surface bar 6-7 directions of motion
5-10, its one end is used to be connected with subject dual input servo valve machine feedback spring, the conical surface phase of the other end and conical surface bar 6-7
Contact；Servo valve connecting rod 5-10 passes through bearing 5-5, and is fixed on bearing 5-5；Servo valve transfer block 5- is set on base 5-11
12, for subject dual input servo valve to be fixedly mounted.
The test fixture matches with subject dual input servo valve (species), is tested the model of dual input servo valve not
Together, pressure is different with discharge characteristic, and the size of required hydraulic actuator is also different.
The P oil-feed ports and T oil return openings for being tested dual input servo valve are connected by oil circuit with the hydraulic power unit of energy resource system；
The number of piston rod displacement transducer 5-3 and feedback displacement transducer 5-4 signal output part respectively with TT＆C system
Connected according to capture card.
2nd, energy resource system includes：Oil circuit provided with supervising device (be specially pressure sensor, pressure gauge, temperature sensor,
Thermometer, flowmeter and liquid level gauge) hydraulic power unit and the cooling system that is cooled down to the fluid in hydraulic power unit；On oil circuit
Supervising device (pressure sensor, temperature sensor) be connected with the data collecting card in the TT＆C system.
3rd, TT＆C system includes：Industrial computer, man-machine interface, DA cards and data collecting card；
The man-machine interface is mounted to the test software on industrial computer, and its function is：For being handed over operating personnel
Mutually, facilitate operating personnel set subject dual input servo valve loading instruction, and the data collected can be handled with
Show, additionally it is possible to carry out data storage the formal intuition of curve map；
The DA cards are analog output unit, are connected with industrial computer, and its function is：The digital command letter that industrial computer is sent
Number (such as amplitude and frequency controlled loading signal) is converted into analog output, analog output channel and the subject lose-lose of DA cards
Enter the coil connection of servo valve, for being controlled to subject dual input servo valve；
The data collecting card, is connected with industrial computer, and its function is：Output for gathering the mechanical test platform system
In signal and the energy resource system on oil circuit monitoring signal (i.e. respectively with piston rod displacement transducer 5-3, feedback displacement sensing
Supervising device connection in device 5-4 and energy resource system on oil circuit), and send industrial computer to；
The industrial computer is master controller, according to the instruction of the man-machine interface, send digital command signal (such as amplitude and
Frequency controlled loading signal) DA cards are given, the mechanical test platform system output signal of data collecting card collection is collected, by institute
Man-machine interface is stated to carry out data processing and draw test curve.
2nd, dual input characteristic test principle and the course of work
1st, operation principle：
Dual input characteristic test system structure as illustrated in fig. 1 and 2, when subject the control mouth (lose-lose of dual input servo valve A, B two
Entering servo valve has four hydraulic fluid ports, P oil-feed ports, T oil return openings and the control mouth of A, B two) two chambers respectively with hydraulic actuator (2,5,8)
Connect, and hydraulic actuator it is non-loaded when, with piston rod displacement transducer (3,6,9) and feedback displacement transducer (1,4,7) survey
The displacement of piston rod (6-1 in Fig. 6) in hydraulic actuator is tried with the characteristic of curent change, dual input characteristic curve (liquid is obtained
The displacement of actuator is pressed with the relation curve of curent change) as shown in Figure 4.Wherein, the test conversion switch of three frocks uses DA
Card is realized.The value of final piston rod 6-1 displacement measurements uses the average value of two displacement transducers so that measurement is more accurate.
Electric current-displacement curve that Fig. 4 measures for experiment, can calculate specified command displacement, dual input from the curve and increase
The index such as benefit, the dual input linearity, dual input symmetry, the stagnant ring of dual input.
Piston rod displacement transducer (level)：
Piston rod displacement transducer 5-3 is fixed on base 5-11 by Ω types seat 5-2；Pass through piston rod displacement transducer
Conical surface bar 6-7s of the connecting rod 5-7 with locking nut a5-6 respectively with piston rod displacement transducer 5-3 and hydraulic actuator 5-1 consolidates
Fixed, tailpiece of the piston rod is paved connecting rod 5-7 by collar 6-8, is not directly contacted with conical surface bar 6-7, is realized piston rod displacement sensing
Device is moved together with hydraulic actuator piston rod 6-1, so as to directly measure piston rod 6-1 displacements.
Feed back displacement transducer (vertical)：
Sleeve 6-6 is welded on bearing 5-5, feedback displacement transducer 5-4 is put into sleeve 6-6, sleeve cap 6- is tightened
5, feedback displacement transducer 5-4 can be fixed up, with conical surface bar 6-7 side-to-side movement, feed back the survey of displacement transducer
Gauge rod 6-10 can be with stretching, so as to measure piston rod 6-1 displacement indirectly above and below the gradient of the conical surface.
Dual input servo valve dual input characteristic test system has three hydraulic actuator 5-1, each hydraulic pressure in the present embodiment
Actuator 5-1 piston rod 6-1 has a taper (conical surface bar 6-7), and piston rod 6-1 position is by falling in conical surface bar 6-7
On servo valve connecting rod 5-10 feed back on the machine feedback spring of subject dual input servo valve so that it is double to form a subject
Input servo valve internal closed loop.By the length for adjusting servo valve connecting rod 5-10, it is possible to hydraulic actuator 5-1 piston
6-3 is adjusted to bit positions.Subject dual input servo valve is connected (subject lose-lose as shown in Figure 5 with hydraulic actuator 5-1 closed loop
Enter servo valve not draw).
When hydraulic actuator 5-1 piston 6-3 is adjusted to bit positions, the coil to subject dual input servo valve is not
Same current signal, can just test subject dual input servo valve different dual input characteristic and other characteristics.When hydraulic actuation
When device 5-1 displacement transducer (piston rod displacement transducer 5-3 and feedback displacement transducer 5-4) is connected with control circuit, energy
It is enough to form electric closed-loop control, i.e., with the output of displacement transducer as feedback quantity, to piston rod 6-1 in hydraulic actuator 5-1
Position carries out closed-loop control.
When the coil incoming frequency to subject dual input servo valve is the current signal that 0.02Hz amplitudes are 20mA, observing and controlling
The industrial computer record lower piston rod 6-1 of system curve of the displacement signal relative to current signal.With the man-machine boundary of TT＆C system
Face uses cooperatively the test for the dual input characteristic that can be carried out dual input servo valve, obtains servo valve dual input characteristic curve,
It is stagnant that the specified command displacement of servo valve, dual input gain, the dual input linearity, dual input symmetry, dual input are calculated simultaneously
The indexs such as ring.
2nd, the course of work
1) subject dual input servo valve is installed
Subject dual input servo valve is installed on testing stand on corresponding test fixture：
Two chamber (the hydraulic cylinders of the chamber of A, B two of dual input servo valve respectively with hydraulic actuator 5-1 on test fixture will be tested
A chamber 6-2, hydraulic cylinder B chamber 6-4) connect；
The P oil-feed ports for being tested dual input servo valve are connected with the fuel feeding end of energy resource system hydraulic power unit oil circuit, T oil return openings
It is connected with the oil revolving end of energy resource system hydraulic power unit oil circuit；
The coil of subject dual input servo valve is connected with the analog output channel of DA cards；
Servo valve connecting rod 5-10 length is adjusted, hydraulic actuator 5-1 piston 6-3 is adjusted to bit positions.
2) control signal (such as frequency is the electric current that 0.02Hz amplitudes are 20mA) is inputted in man-machine interface, industrial computer is sent
The control signal gives DA cards, and DA cards, which export corresponding analog current, makes subject dual input servo valve events, make oil circuit produce flow and
The change of pressure, the final change in displacement for producing hydraulic actuator piston rod 6-1,
A piston rods displacement transducer senses the change in displacement, produces output signal, is sequentially transmitted to data collecting card,
Industrial computer, man-machine interface obtains electric current and the curve of displacement；
B feeds back displacement transducer and senses the change in displacement by conical surface bar, produces output signal, is sequentially transmitted to data
Capture card, industrial computer, man-machine interface obtains electric current and the curve of displacement；
The machine feedback spring of c subject dual input servo valves senses institute by servo valve connecting rod 5-10, conical surface bar 6-7
Change in displacement is stated, the closed loop of servo valve itself is realized.
3) in step 2) in the course of work, pass through oil circuit in energy resource system at state displaying panel 3-3 on viewing test platform
On supervising device (pressure gauge, thermometer, flowmeter, liquid level gauge) numerical value, adjust energy resource system, meet the mechanical test
The requirement of the hydraulic pressure and flow of platform system oil-way and solution charge oil pressure stability problem.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. dual input servo valve dual input characteristic test frock, it is characterised in that including base (5-11), hydraulic actuator (5-
1), piston rod displacement transducer (5-3) and feedback displacement transducer (5-4)；
Hydraulic actuator (5-1) is fixedly arranged on base (5-11), including hydraulic cylinder body (6-9), and piston (6- is set in hydraulic cylinder
3), piston (6-3) will be divided into two chambers inside hydraulic cylinder body (6-9)：Hydraulic cylinder A chambers (6-2) and hydraulic cylinder B chambers (6-4), piston
Two ends are fixed with (6-3) to stretch out outside hydraulic cylinder body (6-9) and perpendicular to piston (6-3) piston rod (6-1),
Piston rod (6-1) one end is set to conical surface bar (6-7)；
Piston rod displacement transducer (5-3) is parallel to hydraulic actuator (5-1) and is fixedly arranged on base (5-11), piston rod displacement
The measurement bar (5-8) of sensor is fixedly connected with the piston rod (6-1) of homonymy conical surface bar (6-7) one end；
Feedback displacement transducer (5-4) is fixed in the vertical direction of conical surface bar (6-7) direction of motion, feeds back displacement transducer
Measurement bar (6-10) be in contact with the conical surface of conical surface bar (6-7)；
Servo valve connecting rod (5-10) is provided with the vertical direction of conical surface bar (6-7) direction of motion, its one end is used for and subject
Dual input servo valve machine feedback spring is connected, and the other end is in contact with the conical surface of conical surface bar (6-7).
2. dual input servo valve dual input characteristic test frock as claimed in claim 1, it is characterised in that piston rod displacement is passed
The measurement bar (5-8) of sensor is connected by connecting rod (5-7) with one end of piston rod (6-1).
3. dual input servo valve dual input characteristic test frock as claimed in claim 2, it is characterised in that connecting rod (5-7)
One end be fixedly connected by locking nut a (5-6) with the measurement bar (5-8) of piston rod displacement transducer；
And/or, the other end of connecting rod (5-7) is fixedly connected by locking nut b (5-9) with one end of piston rod (6-1).
4. dual input servo valve dual input characteristic test frock as claimed in claim 3, it is characterised in that piston rod (6-1)
The collar (6-8) supporting with locking nut b (5-9) is provided between connecting rod (5-7).
5. dual input servo valve dual input characteristic test frock as claimed in claim 1, it is characterised in that on base (5-11)
Fixed bearing (5-5), bearing (5-5) is installed on bearing (5-5) across hydraulic cylinder body (6-9), feedback displacement transducer (5-4)
On；
And/or, servo valve transfer block (5-12) is set on base (5-11), for subject dual input servo valve to be fixedly mounted；
And/or, piston rod displacement transducer (5-3) is fixed on base (5-11) by Ω types seat (5-2).
6. dual input servo valve dual input characteristic test frock as claimed in claim 5, it is characterised in that on bearing (5-5)
If sleeve (6-6), feedback displacement transducer (5-4) is installed in sleeve (6-6)；
And/or, servo valve connecting rod (5-10) passes through bearing (5-5), and is fixed on bearing (5-5).
7. dual input servo valve dual input characteristic test frock as claimed in claim 6, it is characterised in that sleeve (6-6)
Top open part sets sleeve cap (6-5), using threaded connection.
8. dual input servo valve dual input characteristic test system, including any described dual input servo valve in claim 1-7
Dual input characteristic test frock.
9. dual input servo valve dual input characteristic test system as claimed in claim 8, it is characterised in that the dual input is watched
Taking valve dual input characteristic test system includes：Mechanical test platform system, energy resource system and TT＆C system；
The mechanical test platform system includes：If the testing stand of operating table surface and the dual input servo in operating table surface
Valve dual input characteristic test frock；
The energy resource system includes the hydraulic power unit that oil circuit is provided with supervising device,
Hydraulic power unit passes through oil circuit and the dual input servo valve dual input characteristic test frock of the mechanical test platform system
The oil inlet of middle subject dual input servo valve and oil return opening connection；
The TT＆C system includes industrial computer, the man-machine interface being connected respectively with industrial computer, DA cards and data collecting card,
Data collecting card and piston in the dual input servo valve dual input characteristic test frock of the mechanical test platform system
The signal output part connection of bar displacement transducer (5-3) and feedback displacement transducer (5-4),
Supervising device in the energy resource system on oil circuit is connected with data collecting card；
The analog output channel of DA cards and the dual input servo valve dual input characteristic test of the mechanical test platform system
The coil connection for the subject dual input servo valve installed in frock.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999284.4U CN206449056U (en) | 2016-08-30 | 2016-08-30 | Dual input servo valve dual input characteristic test frock and test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999284.4U CN206449056U (en) | 2016-08-30 | 2016-08-30 | Dual input servo valve dual input characteristic test frock and test system |
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| CN201620999284.4U Expired - Fee Related CN206449056U (en) | 2016-08-30 | 2016-08-30 | Dual input servo valve dual input characteristic test frock and test system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677461A (en) * | 2017-09-11 | 2018-02-09 | 东莞理工学院 | Test module and system and test method for the experiment of oil-pressure damper orifice valve |
| CN108255096A (en) * | 2017-12-08 | 2018-07-06 | 中国航空工业集团公司成都飞机设计研究所 | A kind of model equipment for directly driving valve type actuator |
| CN110345132A (en) * | 2019-07-17 | 2019-10-18 | 北京精密机电控制设备研究所 | A kind of servo valve dual input characteristic test system |
-
2016
- 2016-08-30 CN CN201620999284.4U patent/CN206449056U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677461A (en) * | 2017-09-11 | 2018-02-09 | 东莞理工学院 | Test module and system and test method for the experiment of oil-pressure damper orifice valve |
| CN107677461B (en) * | 2017-09-11 | 2018-11-13 | 东莞理工学院 | Test module and system and test method for the experiment of oil-pressure damper orifice valve |
| CN108255096A (en) * | 2017-12-08 | 2018-07-06 | 中国航空工业集团公司成都飞机设计研究所 | A kind of model equipment for directly driving valve type actuator |
| CN108255096B (en) * | 2017-12-08 | 2020-10-20 | 中国航空工业集团公司成都飞机设计研究所 | Model device of direct drive valve type actuator |
| CN110345132A (en) * | 2019-07-17 | 2019-10-18 | 北京精密机电控制设备研究所 | A kind of servo valve dual input characteristic test system |
| CN110345132B (en) * | 2019-07-17 | 2021-07-09 | 北京精密机电控制设备研究所 | Double-input characteristic test system for servo valve |
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