CN206111523U - Pair hydraulic pressure pump test bed - Google Patents
Pair hydraulic pressure pump test bed Download PDFInfo
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- CN206111523U CN206111523U CN201621049709.1U CN201621049709U CN206111523U CN 206111523 U CN206111523 U CN 206111523U CN 201621049709 U CN201621049709 U CN 201621049709U CN 206111523 U CN206111523 U CN 206111523U
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Abstract
The utility model relates to a pair hydraulic pressure pump test bed, including the oil tank, pump, valve unit, control pump package are surveyed to main drive motor, quilt, hydraulic pressure oil pipe line, and filter equipment, oil cooler, detection device and control system, the measured oil pump is the double pump, and main drive motor passes through the shaft coupling and couples with the measured oil pump, valve unit includes pressure load valves, safe each the 2 sets valvess of unloading, and the controller valves is 1 set, the control pump package includes motor, high -pressure pump, controller valves, filter equipment includes by survey pump inlet port filter, valve unit time oil filter, control pump package oil -out pressure filter, detection device includes torsion rotational speed detection device, pressure sensor, flow detector, temperature detector, control system includes constitutions such as PLC programmable controller, data acquisition, frequency -variable controller. The utility model discloses pair hydraulic pressure pump test bed, simple structure, the design is unique, detection that can be accurate is by the initial setting of pump testing, can for by before the examination, the back pump requires to set for and provide the basis with discharge capacity settlement, pressure, power, can simulate the loading state of pair hydraulic pump on the engineering machine tool well, guarantees that the spare parts of changing on the engineering machine tool be qualified products, saving cost of maintenance.
Description
Technical field
The utility model is related to a kind of duplex test-bed for pump device, particularly a kind of duplex hydraulic pump test stand.
Background technology
At present, the engineering machinery such as large-scale maintenance machinery, excavator and rig adopts duplex hydraulic pump as hydraulic power
Device, according to the difference of engineering machinery function, it is desirable to which duplex hydraulic pump must export identical pressure, flow and constant work(
Rate；In actually used, if changed, output flow, pressure, invariable power point occur to duplex hydraulic pump mechanically variant, can
Walking machine can be caused to be unable to synchronous walking, digging machine large arm powerless, mechanical the problems such as can not normally use；If scene dismounting is more
Change, hydraulic system pollution, fluid can be produced and wasted, and lifting must use hoisting tool vehicle, and maintenance personal's work is powerful, increases
Plus maintenance cost.
The content of the invention
Goal of the invention of the present utility model is the deficiency for overcoming background technology, there is provided a kind of duplex hydraulic pump test stand,
Realize that duplex hydraulic pump key property and controller can set the detection of performance, set up test.
The utility model is adopted the following technical scheme that：
A kind of duplex hydraulic pump test stand of the utility model, including fuel tank, main drive motor, tested pump, control valve group, control
Pump group processed, hydraulic fluid pipeline, filter, oil cooling machine, detection means and control system, the tested oil pump is duplex pump, main
Motor is coupled by shaft coupling with tested oil pump, and the control valve group includes pressure-loaded valve group, safety unloading valve group each 2
Set, 1 set of controller valve group；Control pump group includes motor, high-pressure pump, controller valve group；Filter includes tested pumping hydraulic fluid port
Filter, control valve group return filter, control pump group oil-out filter-press；Detection means include speed detector,
Pressure detecting instrument, flow detector, temperature monitor；Control system includes PLC, data acquisition, VFC
Device etc. is constituted；It is characterized in that：The tested oil pump duplex pump, has an inlet port and couples with fuel tank, tested oil pump front pump（Lean on
Nearly motor side is front pump）, after pump out hydraulic fluid port respectively with pressure-loaded valve group, safety unloading valve group couple；The pressure-biased valve
Group includes proportional pressure valve, safety valve, inserted valve composition；The safety unloading valve group is made up of solenoid directional control valve, inserted valve；Institute
Controller valve group is stated, be it is characterized in that：The different control pressures of proportional pressure control valve, output including adjustment control high pressure pump system pressure
Proportional pressure-reducing valve composition.
The tested oil pump, is characterized in that：Tested oil pump can be single pump or duplex pump group；Its composition can be quantitative
Pump, variable pump or constant displacement pump are combined with variable pump.
The control system, is characterized in that：Frequency-variable controller can in real time set main drive motor and tested duplex pump turns
Fast 900r/min (model engineering car idling), 1500 r/min（1 grade of acceleration）、2000 r/min（2 grades of acceleration）.
The control system, is characterized in that：Setting ratio pressure valve input signal, by pump testing front pump, rear pump can be simultaneously
Stepless pressure-loaded is carried out to 30Mpa, it is also possible to carry out front pump loading, the loading of rear pump respectively；According to detection data respectively to it is front,
Afterwards pump carries out pressure setting.
The control system, is characterized in that：Setting ratio pressure valve, proportional pressure control valve input signal, by pump testing front pump, after
Pump can respectively carry out constant-pressure variable test, it is also possible to while carrying out forward and backward pump constant pressure Remote test.
The control system, is characterized in that：Setting ratio pressure-reducing valve input signal, by pump testing front pump, rear pump can be simultaneously
Carry out discharge capacity test, it is also possible to carry out front pump, the test of rear pumpage respectively；According to detection data forward and backward pump is carried out most respectively
Greatly, minimum injection rate adjustment.
The control system, is characterized in that：Setting ratio pressure valve, proportional pressure control valve input signal, by pump testing front pump, after
Pump can respectively carry out invariable power test, can respectively carry out front pump, the cut-out setting test of rear pump pressure.
The detection means, is characterized in that：Whether speed detector can be with the tested revolution speed of real-time detection as 900r/
Min, 1500 r/min, 2000 r/min etc.；The front pump pressure of the tested pump of pressure detecting instrument real-time detection, rear pump pressure, controller
Valve group proportional pressure control valve, proportional pressure-reducing valve pressure；Flow detector can be with the front pump discharge of real-time detection, in front and back rear pump discharge, pump
Common output flow；Temperature monitor real-time detecting system oil liquid temperature, more than design temperature, sends signal, oil cooling machine input
Operation.
Practical application proves that the utility model duplex hydraulic pump test stand simple structure, design is unique, can accurately examine
Survey by the initial setting of pump testing, can require to provide foundation with discharge capacity setting, pressure, power setting for tested forward and backward pump, can
Stress state of the duplex hydraulic pump in engineering machinery is simulated well, it is ensured that it is qualified product to change to the spare part in engineering machinery
Product, save maintenance cost.
Description of the drawings
Fig. 1 is the hydraulic schematic diagram of the present embodiment 1；
Fig. 2 is the present embodiment 2 by pump testing schematic diagram；
Fig. 3 is the present embodiment 3 by pump testing schematic diagram；
Description of reference numerals：Tested pump 1, torsion speed detector 2, main drive motor 3, inserted valve 5,4, ratio pressure
Valve 7,9, safety valve 6,8, high-pressure pump 10, filter-press 11, return filter 12, inlet port filter 13, liquid level gauge 14, temperature
Degree detector 15, motor 16, pressure detecting instrument 17,18,19,20, safety unloading valve group 22,21, pressure-loaded valve group 24,23,
Oil cooling machine 25, solenoid directional control valve 27,26, inserted valve 29,28, flow detector 30, proportional pressure-reducing valve 31,32, pressure detecting instrument
33rd, proportional pressure control valve 34, controller valve group 35, ball relief valve 36.
Specific embodiment
Embodiment 1：As shown in figure 1, a kind of duplex hydraulic pump test stand, including fuel tank, main drive motor 3, tested pump 1,
Control pump group, control valve group, hydraulic fluid pipeline, filter, oil cooling machine 25, detection means and control system, the control valve
Group includes that pressure-loaded valve group, safety unloading valve group are each 2 sets, 1 set of controller valve group；Filter includes tested pumping hydraulic fluid port mistake
Filter 13, control valve group return filter 12, control pump group oil-out filter-press 11；Detection means is examined including torsion rotating speed
Survey device 2, flow detector 30, temperature monitor 15, pressure detecting instrument 17,18,19,20；Control system includes PLC programming controls
Device processed, data acquisition, frequency-variable controller etc. are constituted；Tested oil pump 1, main drive motor 3 are by shaft coupling and speed detector 2
Connection, control pump group drives the pressure oil output of high-pressure pump 10 to be connected to controller valve group with oil pipe through filter 11 by motor 16
35；The oil pipe of flow detector 30 is connected between return filter 12 and pressure-loaded valve group 23.
The tested oil pump 1 is duplex pump, has an inlet port and is coupled with fuel tank by ball relief valve 36, tested oil pump
Front pump（It is front pump near motor side）, after pump out hydraulic fluid port P1, P2 respectively with hydraulic oil pipe and pressure-loaded valve group 23,24, safely
Unloading valve group 21,22 couples；The pressure-loaded valve group 24,23 by proportional pressure valve 7,9, safety valve 6,8,5,4 groups of inserted valve
Into；Safety unloading valve group 22,21 is made up of solenoid directional control valve 27,26, inserted valve 29,28；Controller valve group 35, by proportional overflow
Valve 34, the proportional pressure-reducing valve 31,32 of the different control pressures of output are constituted.
Embodiment 2：As shown in figure 1, the tested oil pump 1 is discharge capacity being 200ml/r, the duplex of operating pressure 25Mpa is determined
Amount pump or single pump, realize that detection project is：Output flow during rotating speed 1500r/min, during forward and backward pump no-load；Operating pressure
During 25Mpa, the interior vent flow of forward and backward pump.
The course of work is：Control system instruction frequency-variable controller setting main drive motor is operated with rotating speed 1500r/min, when
Torsion speed detector detect tested revolution speed for 1500 r/min when, forward and backward pump performance test can be carried out；If inspection
Measured value has error, and computer can automatically issue a command to frequency-variable controller and be adjusted；The proportional pressure valve 7,9 of pressure-loaded valve group
Set minimum current value 200mA.
When afterwards pump discharge is determined, solenoid directional control valve 27 it is electric, safety unloading valve group is closed, and solenoid directional control valve 26 must not be electricity
State, front POF will pass through inserted valve 5,4 by inserted valve 28, the oil return box of return filter 12, rear POF
To flow detector 30, the oil return box of return filter 12, the flow that now flow detector is detected is rear pump close to zero load
Output flow value during lotus；When the increase adjustment setting electric current value of proportional pressure valve 7, until pressure detecting instrument 18 detects pressure
During 25Mpa, the flow that flow detector is detected is output flow of the rear pump in operating pressure 25Mpa；Can be calculated rear pump
Leakage rate.
During front pump flow measurement, solenoid directional control valve 26 it is electric, safety unloading valve group is closed, and solenoid directional control valve 27 must not be electricity
State, rear POF will be arrived by inserted valve 29, the oil return box of return filter 12, front POF by inserted valve 4
Flow detector 30, the oil return box of return filter 12, the flow that now flow detector is detected is front pump close to zero load
When output flow value；When the increase adjustment setting electric current value of proportional pressure valve 9, until pressure detecting instrument 17 detects pressure
During 25Mpa, the flow that flow detector is detected is output flow of the front pump in operating pressure 25Mpa；Can be calculated front pump
Leakage rate.
Embodiment 3：As shown in Fig. 2 the tested oil pump 1 is duplex variable pump, it is remote that forward and backward pump is respectively constant-pressure variable band
Stroke pressure controller；Forward and backward pump oil mouth P1, P2 unload valve group with hydraulic oil pipe and pressure-loaded valve group 23,24, safety respectively
21st, 22 connection；Control port X1, X2 couple respectively with hydraulic fluid port X1, X2 of controller valve group 35；
Realize that detection project is：During rotating speed 1000r/min, the constant-pressure variable point pressure of forward and backward pump is set as 16Mpa；Test
During card remote pressure 15Mpa, the whether same variations per hour of forward and backward pump.
The course of work is：Control system instruction frequency-variable controller setting main drive motor is with rotating speed 1000r/min operatings, pressure
The proportional pressure valve 7,9 of power loading valve group sets minimum current value 200mA, and controller valve group 35 is set by proportional pressure control valve 34
Determine minimum current value 200mA.
When afterwards pump constant-pressure variable is determined, solenoid directional control valve 27 obtains electric, and safety unloading valve group is closed, and solenoid directional control valve 26 is not for
Electricity condition is obtained, front POF will pass through inserted valve by inserted valve 28, the oil return box of return filter 12, rear POF
5th, 4 flow detector 30, the oil return box of return filter 12 are arrived；The flow that now flow detector is detected is rear pump close to zero
The initial flow value exported during load, when simultaneously scaling up pressure valve 7, the setting electric current value of proportional pressure control valve 34, until pressure
When tension gauge 18,33 detects pressure 16Mpa, check whether flow value reduces, with proportional pressure valve 7, proportional pressure control valve
34 setting electric current value continues to increase, and when detection pressure is 16.2Mpa, output flow is reduced to 0（Or close zero）, you can checking
Afterwards pump constant-pressure variable point is 16Mpa；According to testing result, the different constant-pressure variable point of setting can be adjusted.
When front pump constant-pressure variable is determined, solenoid directional control valve 26 obtains electric, and safety unloading valve group is closed, and solenoid directional control valve 27 is not for
Electricity condition is obtained, rear POF will pass through inserted valve by inserted valve 29, the oil return box of return filter 12, front POF
4 arrive flow detector 30, the oil return box of return filter 12；The flow that now flow detector is detected is front pump close to zero load
The initial flow value exported during lotus, when simultaneously scaling up pressure valve 9, the setting electric current value of proportional pressure control valve 34, until pressure
When detector 17,33 detects pressure 16Mpa, if flow value is not changed in, with proportional pressure valve 9, proportional pressure control valve 34
Setting electric current value continue increase, until output flow is reduced to 0, now pressure detecting instrument 17 show pressure for front pump perseverance
Pressure variable amount point, can adjust pressure setting screw on front pump, repeat said process, when constant-pressure variable point is 16Mpa, you can
Show that forward and backward pump constant-pressure variable point is identical.
Forward and backward pump is loaded when determining simultaneously, verifies remote pressure 15Mpa, and when whether forward and backward pump is with variations per hour, electromagnetism is changed
To valve 26,27 it is electric, while scaling up pressure valve 7,9, the setting electric current value of proportional pressure control valve 34, until pressure detecting instrument
17th, 18,33 when detecting pressure 15Mpa, if output flow is reduced to 0（Or close zero）, you can checking remote pressure function
Can normally use.
Embodiment 4：As shown in figure 3, the tested oil pump 1 is A11V-LRDH2 duplex variable pumps, forward and backward pump is respectively perseverance
Power Control band pressure cut off and hydraulic stroke limiter；Forward and backward pump oil mouth P1, P2 respectively with pressure-loaded valve group 23,24, peace
Full unloading valve group 21,22 couples；Control port Y1, Y2 couple respectively with hydraulic fluid port Y1, Y2 of controller valve group 35；
Realize that detection project is：During rotating speed 2000r/min, detect forward and backward pumpage in minimum injection rate VgminTo maximum row
Amount VgmaxIn control range, being capable of consecutive variations on demand；Front pump, the test of rear pump invariable power are carried out respectively；Carry out respectively front pump,
Pump pressure cut-out test afterwards.
The course of work is：Control system instruction frequency-variable controller setting main drive motor is with rotating speed 2000r/min operatings, pressure
The proportional pressure valve 7,9 of power loading valve group sets minimum current value 200mA, and the proportional pressure-reducing valve 31,32 of controller valve group 35 is equal
Setting minimum current value 200mA, the setting minimum current value 350mA of proportional pressure control valve 34, pressure detecting instrument 33 shows pressure 4Mpa.
When front pumpage is tested, solenoid directional control valve 26 it is electric, safety unloading valve group is closed, and solenoid directional control valve 27 must not be electricity
State, rear POF will be arrived by inserted valve 29, the oil return box of return filter 12, front POF by inserted valve 4
Flow detector 30, the oil return box of return filter 12；Now flow detector is shown as front pump minimum injection rate VgminWhen flow
Value, when the input signal of scaling up pressure-reducing valve 32 to 600mA, when the display pressure of pressure detecting instrument 20 is 1-3.5Mpa, flow inspection
Survey instrument and show flow continuously to increase, until flow value no longer changes as front pump maximum pump discharge VgmaxWhen flow value.
When afterwards pumpage is tested, solenoid directional control valve 27 it is electric, safety unloading valve group is closed, and solenoid directional control valve 26 must not be electricity
State, front POF will pass through inserted valve 5,4 by inserted valve 28, the oil return box of return filter 12, rear POF
To flow detector 30, the oil return box of return filter 12；Now flow detector is shown as rear pump minimum injection rate VgminWhen stream
Value, when the input signal of scaling up pressure-reducing valve 31 to 600mA, when the display pressure of pressure detecting instrument 19 is 1-3.5Mpa, flow
Detector shows flow and increases for continuous, until flow value no longer changes the pump maximum pump discharge V aftergmaxWhen flow value；Root
Maximum, minimum injection rate adjustment are carried out to forward and backward pump respectively according to detection data, until discharge capacity sets identical.
Forward and backward pumpage is tested simultaneously when, solenoid directional control valve 26,27 obtains electric, scaling up pressure-reducing valve 31,32 input signals
To 600mA, when the display pressure of pressure detecting instrument 19,20 is 1-3.5Mpa, flow detector shows flow and increases for continuous, until
Flow value no longer changes, if flow summation when flow value is measured respectively for forward and backward pump, that is, illustrates that forward and backward pumpage adjustment sets
It is fixed identical.
Front pump invariable power is tested, when front pump is set as maximum displacement values, the setting electric current value of scaling up pressure valve 9, detection
Hyperbola change is rendered as to pressure, data on flows curve, when flow changes, corresponding pressure spot is invariable power
Point；When continuing to increase the current value of proportional pressure valve 9, until detection flows are minimum injection rate VgminDuring flow value, pressure detecting instrument
17 detect pressure, as front pump pressure cut off setting value.
Pump invariable power test afterwards, when after pump be set as maximum displacement values, the setting electric current value of scaling up pressure valve 7, detection
Hyperbola change is rendered as to pressure, data on flows curve, when flow changes, corresponding pressure spot is invariable power
Point；When continuing to increase the current value of proportional pressure valve 7, until detection flows are minimum injection rate VgminDuring flow value, pressure detecting instrument
18 detect pressure, as rear pump pressure cut-out setting value；According to detection data forward and backward pump invariable power point, pressure are cut respectively
Disconnected setting value is set up.
Claims (7)
1. duplex hydraulic pump test stand, including fuel tank, main drive motor, tested pump, control valve group, control pump group, hydraulic oil pipe
Line, filter, oil cooling machine, detection means and control system, the tested pump is duplex pump, and main drive motor passes through shaft coupling
Couple with tested oil pump；The control valve group includes that pressure-loaded valve group, safety unloading valve group are each 2 sets, 1 set of controller valve group；
Control pump group includes motor, high-pressure pump, controller valve group；Filter includes that tested pumping hydraulic fluid port filter, control valve group are returned
Oil strainer, control pump group oil-out filter-press；Detection means includes speed detector, pressure detecting instrument, flow inspection
Survey instrument, temperature monitor；Control system includes PLC, data acquisition, frequency-variable controller；It is characterized in that：The quilt
Survey oil pump duplex pump, have an inlet port and couple with fuel tank, tested oil pump front pump, after pump out hydraulic fluid port respectively by hydraulic oil pipe and
Pressure-loaded valve group, safety unloading valve group connection；Pressure-loaded valve group includes proportional pressure valve, safety valve, inserted valve；Safety is unloaded
Carrying valve group includes solenoid directional control valve, inserted valve；The controller valve group, including adjustment control high pressure pump system pressure ratio overflow
The proportional pressure-reducing valve of stream valve, the different control pressures of output.
2. duplex hydraulic pump test stand according to claim 1, is characterized in that：Tested oil pump is single pump or duplex pump group,
Can be that constant displacement pump, variable pump or constant displacement pump are combined with variable pump.
3. duplex hydraulic pump test stand according to claim 1, is characterized in that：The control system, can be with setting ratio
Pressure valve input signal, stepless pressure-loaded can be at the same time or separately carried out to 30Mpa by pump testing front pump, rear pump.
4. duplex hydraulic pump test stand according to claim 1, is characterized in that：Concurrently set proportional pressure valve, ratio to overflow
Stream valve input signal, by pump testing front pump, rear pump constant-pressure variable test can be respectively carried out, it is also possible to while it is permanent to carry out forward and backward pump
Pressure Remote test.
5. duplex hydraulic pump test stand according to claim 1, is characterized in that：Setting ratio pressure-reducing valve input signal, quilt
Pump testing front pump, rear pump can at the same time or separately carry out discharge capacity test.
6. duplex hydraulic pump test stand according to claim 1, is characterized in that：Concurrently set proportional pressure valve, ratio to overflow
Stream valve, proportional pressure-reducing valve input signal, can respectively carry out invariable power test or pressure cut off setting is surveyed by pump testing front pump, rear pump
Examination.
7. duplex hydraulic pump test stand according to claim 1, is characterized in that：Flow detector can be with real-time detection front pump
Flow, rear pump discharge or the common output flow of pump in front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049709.1U CN206111523U (en) | 2016-09-09 | 2016-09-09 | Pair hydraulic pressure pump test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049709.1U CN206111523U (en) | 2016-09-09 | 2016-09-09 | Pair hydraulic pressure pump test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206111523U true CN206111523U (en) | 2017-04-19 |
Family
ID=58519646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621049709.1U Expired - Fee Related CN206111523U (en) | 2016-09-09 | 2016-09-09 | Pair hydraulic pressure pump test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206111523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109345943A (en) * | 2018-10-31 | 2019-02-15 | 西安航空学院 | A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system |
| CN111350707A (en) * | 2020-02-29 | 2020-06-30 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic system and method for power test of explosion-proof diesel engine |
-
2016
- 2016-09-09 CN CN201621049709.1U patent/CN206111523U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109345943A (en) * | 2018-10-31 | 2019-02-15 | 西安航空学院 | A kind of Hydraulic Elements theory Internet-based and experimental synchronous tutoring system |
| CN111350707A (en) * | 2020-02-29 | 2020-06-30 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic system and method for power test of explosion-proof diesel engine |
| CN111350707B (en) * | 2020-02-29 | 2022-04-12 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic system and method for power test of explosion-proof diesel engine |
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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: 20170419 Termination date: 20210909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |