CN208907854U - A kind of electro-hydraulic experimental bench - Google Patents
A kind of electro-hydraulic experimental bench Download PDFInfo
- Publication number
- CN208907854U CN208907854U CN201821788375.9U CN201821788375U CN208907854U CN 208907854 U CN208907854 U CN 208907854U CN 201821788375 U CN201821788375 U CN 201821788375U CN 208907854 U CN208907854 U CN 208907854U
- Authority
- CN
- China
- Prior art keywords
- oil
- pipeline
- hydraulic
- flowmeter
- electro
- 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
The utility model discloses a kind of electro-hydraulic experimental benches, including motor, the oil pump being connected on motor, the oil feed line being connected on fuel pump outlet end, the oil return line being connected on oil pump inlet end, the executing agency being connected between oil feed line and oil return line, it further include the metering device being connected on oil return line, the metering device includes flowmeter and bridge-type pipeline, the bridge-type pipeline is connected on oil return line, flowmeter is connected to bridge pipe road, flowmeter is for measuring the fluid flow for flowing through bridge-type pipeline, after the import of the bridge-type pipeline and outlet port variation, the fluid circulating direction for flowing through flowmeter is consistent.The testing stand can be used for providing design parameter verifying, Proof-Of Principle etc. for the design of hydraulic system, complete design of Hydraulic System, performance verification to facilitate.
Description
Technical field
The utility model relates to dynamic experiment system technical fields, more particularly to a kind of electro-hydraulic experimental bench.
Background technique
In the prior art, hydraulic auxiliary acceleration system is that electro-hydraulic railcar preferably assists acceleration system, be can effectively reduce
The Acceleration of starting time of railcar, the peak power of motor, increase climbing capacity etc..Meanwhile in joint of robot drive area,
Fluid power system has biggish driving force with respect to electric drive, pneumatic actuation etc., and with high with hydraulic system power density
And prompt explosion power is big, particularly suitable for heavy duty situation；Its layout structure relative compact simultaneously, so that outer dimension is relatively
It is small；Hydraulic system has self-lubricating property, impact resistance, vibration resistance；It is excellent to have flexible variable speed and overload protection etc.
Gesture is the preferred drive form of joint of robot.
The above hydraulic auxiliary acceleration system, fluid power system nuclear structure be hydraulic system, in the prior art, be
Adapt to corresponding driving purpose has in the prior art other than above-mentioned electro-hydraulic railcar field, joint of robot field
The hydraulic system of diversified forms.
Utility model content
For set forth above in the prior art for driving the shape of the hydraulic system of electro-hydraulic railcar, joint of robot etc.
The problem of formula multiplicity, the utility model provide a kind of electro-hydraulic experimental bench, which can be used for mentioning for the design of hydraulic system
For design parameter verifying, Proof-Of Principle etc., design of Hydraulic System, performance verification are completed to facilitate.
To solve the above problems, a kind of electro-hydraulic experimental bench provided by the utility model solves to ask by following technical essential
Topic: a kind of electro-hydraulic experimental bench including motor, the oil pump being connected on motor, the oil feed line being connected on fuel pump outlet end, connects
The executing agency for connecing the oil return line on oil pump inlet end, being connected between oil feed line and oil return line further includes series connection
Metering device on oil return line, the metering device include flowmeter and bridge-type pipeline, and the bridge-type pipeline is connected on back
On oil pipe line, flowmeter is connected to bridge pipe road, and flowmeter is for measuring the fluid flow for flowing through bridge-type pipeline, in the bridge
After the import of formula pipeline and outlet port variation, the fluid circulating direction for flowing through flowmeter is consistent.
In the present solution, the motor is for driving operation of oil pump, the oil pump is by oil feed line and oil return line, to holding
Row mechanism conveys hydraulic oil, and the hydraulic oil is the working media of executing agency, and executing agency can be according to the use of this testing stand
It needs, is set as that the design of Hydraulic System of electro-hydraulic railcar can be directed to when for variable displacement motor for variable displacement motor, hydraulic cylinder etc.
It can be the design and verifying of conventional machines person joint, crane joint hydraulic system when for hydraulic cylinder with verifying.
The oil feed line and oil return line are a part of this testing stand oil circuit, and the flowmeter of setting is for measuring this
Hydraulic fluid flow rate when testing stand works can by resulting hydraulic fluid flow rate and the pressure value obtained using pressure measuring unit
For the parameter accounting of hydraulic system, data verification etc., reaches and facilitate the purpose of completing design of Hydraulic System, performance verification.
In the prior art, for drive electro-hydraulic railcar, joint of robot etc. hydraulic system it is various informative, therefore distinguish
In traditional sucrose pipeline, the above oil circuit, different driving purposes is simulated to adapt to executing agency, the executing agency has not
Same drive form, in the oil circuit, the flow direction of hydraulic oil is there is variation, and in the prior art may be used as needed
Flowmeter for measuring hydraulic fluid flow rate is many kinds of, including such as differential pressure flowmeter, spinner flowmeter, restrictive flow
Meter, slit flowmeter, volume-displacement, electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter and vortex-shedding meter etc..
With in flow meter, if the metering of electromagnetic flowmeter can not be influenced by fluid flow direction, in other flowmeters, turbine flow
Meter and vortex-shedding meter generally require specific installation direction, that is, fluid is required to need to flow through flow with specific flow direction
Meter.And turbine flow is calculated as the highest flowmeter of measurement accuracy in the above flowmeter, while also having and null offset is not present, and resists
The features such as interference performance is good, therefore turbine flow is calculated as on this testing stand the preferred flowmeter form in metering device.
It is the fluid flow direction of metering device position after the import of the bridge-type pipeline and outlet port variation
After changing, the bridge-type pipeline of arrangement above is the fluid circulation side for guaranteeing to flow through flowmeter after changing more than occurring
To consistent, in this way, turbine flowmeter may make to can be used in the hydraulic fluid flow rate measurement of this testing stand, set with improving hydraulic system
The accuracy of meter and the reliability of performance verification.Flowmeter on the i.e. above metering device is preferably turbine flowmeter.
Further technical solution are as follows:
Further include energy-accumulating element, the energy-accumulating element include the first accumulator, the second reversal valve and pressure reducing valve, described second
Reversal valve is connected by pipeline with the first accumulator, oil feed line, oil return line, and the pressure reducing valve is connected on the second reversal valve
On pipeline between oil return line；
First accumulator passes through pipeline, the second reversal valve and the first accumulation of energy between the second reversal valve and oil feed line
Pipeline oil inlet between device；
First accumulator passes through pipeline, the second reversal valve and the first accumulation of energy between the second reversal valve and oil feed line
Pipeline between device is to oil feed line oil extraction；
First accumulator passes through pipeline, the second reversal valve and the first accumulation of energy between the second reversal valve and oil return line
Pipeline between device is to oil return line oil extraction.
Specifically, in the present solution, second reversal valve be both oil feed line, oil return line and the first accumulator it
Between control valve, as those skilled in the art, the control valve can be used common with fluid communication control ability
For example 3-position 4-way electro-hydraulic proportional valve also can be used in valve, using this programme, can not only realize through the first accumulator to fuel feeding
Pipeline oil extraction, also can be by the first accumulator to oil return line oil extraction, and due in respective line when to oil return line oil extraction
With pressure reducing valve, thus can in the first accumulator hydraulic fluid pressure variation or the situation larger compared to oil return line pressure difference
Under, pass through the pressure degree of regulation in oil return line during pressure reducing valve raising oil extraction.Above with the accumulation of energy of pressure reducing valve
Element accurately changes variable displacement motor work operating condition especially suitable for using in executing agency when variable displacement motor, also can be used for executing
The load of motor when reducing hydraulic cylinder works when hydraulic cylinder is used in mechanism, utilizes electric efficiency high spy when energy-accumulating element accumulation of energy
The efficiency of motor in point optimization this testing stand whole work process.
Further include the first reversal valve, the executing agency by the first reversal valve be connected to oil feed line and oil return line it
Between, first reversal valve is for switching hydraulic oil into and out of the running of hydraulic power oil direction of executing agency.
As the specific setting form of bridge-type pipeline, the bridge-type pipeline includes annulus line annular in shape, the annular
There are four check valves for series connection on pipeline, and the both ends of flowmeter pass through pipeline section and are connected on annulus line；
Two check valves are all had on the annulus line of pipeline section two sides for connecting flowmeter, and in connection flowmeter
Pipeline section it is ipsilateral two check valve conducting directions in the circumferential direction along annulus line it is consistent.In the present solution, ring pipe
I.e. there are four piping connection points for road: two tie points are connected on oil return line for realizing bridge-type pipeline, two tie points
It is respectively used to the import and export of connection flowmeter, if the bridge-type pipeline between four points of connection surrounds quadrangle, is then in connection flow
Check valve on two ipsilateral sides of the pipeline section of the meter conducting direction in the circumferential direction along annulus line is consistent.Bridge pipe
Line structure is simple, so that realizing that the one-directional fluid flow for flowing through flowmeter is at low cost.
For the non-loaded starting for realizing motor, setting are as follows: further include being connected on leading between oil feed line and oil return line
Disconnected control valve.
To enable this testing stand to simulate more operating conditions to adapt to verifying purpose or purpose of design, it is arranged are as follows: described
Executing agency includes variable displacement motor and hydraulic cylinder, and the variable displacement motor connects into parallel relationship by pipeline section with hydraulic cylinder；
The front and back ends of the variable displacement motor and hydraulic cylinder are respectively connected with on-off control valve, the variable displacement motor and hydraulic cylinder
The on-off control valve of front and back ends makes in executing agency, and variable displacement motor can both work independently with hydraulic cylinder.It is above independent
Work is that variable displacement motor both can work independently with hydraulic cylinder, and as those skilled in the art, Yao Shixian above-mentioned purpose is led to
The on-off control valve is overregulated, so that corresponding oil communication or disconnection can reach the purpose.
At work due to oil pump and executing agency, there may be certain hydraulic fluid leaks, to improve environment and mentioning
The utilization rate of high hydraulic oil, setting are as follows: further include the oil spilling recovering mechanism for collecting oil pump oil spilling and executing agency's oil spilling.
As the specific implementation of oil spilling recovering mechanism, setting are as follows: the oil spilling recovering mechanism includes the second accumulator
And repairing pipeline, the repairing pipeline are connected on the second accumulator, repairing pipeline passes through the oil spilling position of pipeline section and oil pump, holds
The equal pipeline connection of arrival end of the oil spilling position, oil pump of row mechanism.Using this programme, the second accumulator is internal pressure compared to the external world
Container, corresponding pipeline section blocks oil spilling position to be communicated with the atmosphere, and using this programme, pressure energy not only can be recycled, while can keep away
Exempt from hydraulic oil to be polluted.Preferably, it is set as oil return line and is connect with repairing pipeline by pipeline section, at this point, described second stores
Energy device can be used as storage oil vessel.
It further include the overflow being connected between oil feed line and repairing pipeline for the safety for ensureing the work of this testing stand
Valve.Preferably, it is multiple for being set as the overflow valve, and including proportional pressure control valve, in this way, can effectively be protected by multiple overflow valves
Hinder safety when oil circuit work, while may make oil circuit maximum pressure adjustable.
For convenience of motor running parameter is obtained, it is arranged are as follows: further include the torque rotational speed meters being connected to the motor.
The utility model has the following beneficial effects:
This testing stand can be used for providing design parameter verifying, Proof-Of Principle etc. for the design of hydraulic system, be completed with facilitating
Design of Hydraulic System, performance verification.Meanwhile the import of the bridge-type pipeline and outlet port variation after be metering device where
After the fluid flow direction of position changes, the bridge-type pipeline of arrangement above is i.e. for guaranteeing to flow through after changing more than occurring
The fluid circulating direction of flowmeter is consistent, in this way, the hydraulic fluid flow rate that may make turbine flowmeter to can be used in this testing stand is surveyed
It is fixed, to improve the accuracy of design of Hydraulic System and the reliability of performance verification.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of electro-hydraulic one specific embodiment of experimental bench described in the utility model；
Fig. 2 is the partial enlarged view in the portion A shown in Fig. 1.
Wherein the label in figure is respectively as follows: 1, motor, 2, oil pump, 3, oil feed line, 4, oil return line, the 5, first accumulation of energy
Device, the 6, first reversal valve, 7, variable displacement motor, 8, hydraulic cylinder, 9, metering device, 91, flowmeter, 92, bridge-type pipeline, 93, unidirectional
Valve, the 10, second accumulator, 11, pressure reducing valve, 12, overflow valve, 13, repairing pipeline, 14, torque rotational speed meters, the 15, second reversal valve.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but the utility model be not limited only to
Lower embodiment:
Embodiment 1:
As depicted in figs. 1 and 2, a kind of electro-hydraulic experimental bench including motor 1, the oil pump being connected on motor 12, is connected to oil
It pumps the oil feed line 3 on 2 outlet ends, the oil return line 4 being connected on 2 arrival end of oil pump, be connected to oil feed line 3 and oil return pipe
Executing agency between road 4, further includes the metering device 9 being connected on oil return line 4, and the metering device 9 includes flowmeter
91 and bridge-type pipeline 92, the bridge-type pipeline 92 be connected on oil return line 4, flowmeter 91 is connected on bridge-type pipeline 92, stream
Meter 91 changes for measuring the fluid flow for flowing through bridge-type pipeline 92 in the import of the bridge-type pipeline 92 and outlet port
Afterwards, the fluid circulating direction for flowing through flowmeter 91 is consistent.
In the present solution, the motor 1, for driving oil pump 2 to work, the oil pump 2 passes through oil feed line 3 and oil return line
4, hydraulic oil is conveyed to executing agency, the hydraulic oil is the working media of executing agency, and executing agency can be according to this testing stand
Use need, be set as variable displacement motor 7, hydraulic cylinder 8 etc., when for variable displacement motor 7, the hydraulic of electro-hydraulic railcar can be directed to
System design and verifying, when for hydraulic cylinder 8, can for conventional machines person joint, crane joint hydraulic system design and
Verifying.
A part of the oil feed line 3 and as this testing stand oil circuit of oil return line 4, the flowmeter 91 of setting is for surveying
The hydraulic fluid flow rate when work of this testing stand is measured, resulting hydraulic fluid flow rate and the pressure obtained using pressure measuring unit are passed through
Value, can be used for parameter accounting, data verification of hydraulic system etc., reaches to facilitate and completes the mesh such as design of Hydraulic System, performance verification
's.
In the prior art, for drive electro-hydraulic railcar, joint of robot etc. hydraulic system it is various informative, therefore distinguish
In traditional sucrose pipeline, the above oil circuit, different driving purposes is simulated to adapt to executing agency, the executing agency has not
Same drive form, in the oil circuit, the flow direction of hydraulic oil is there is variation, and in the prior art may be used as needed
Flowmeter for measuring hydraulic fluid flow rate is many kinds of, including such as differential pressure flowmeter, spinner flowmeter, restrictive flow
Meter, slit flowmeter, volume-displacement, electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter and vortex-shedding meter etc..
With in flow meter, if the metering of electromagnetic flowmeter can not be influenced by fluid flow direction, in other flowmeters, turbine flow
Meter and vortex-shedding meter generally require specific installation direction, that is, fluid is required to need to flow through flow with specific flow direction
Meter.And turbine flow is calculated as the highest flowmeter of measurement accuracy in the above flowmeter, while also having and null offset is not present, and resists
The features such as interference performance is good, therefore turbine flow is calculated as on this testing stand the preferred flowmeter form in metering device 9.
It is the fluid flowing side of 9 position of metering device after the import of the bridge-type pipeline 92 and outlet port variation
To after changing, the bridge-type pipeline 92 of arrangement above is the fluid stream for guaranteeing to flow through flowmeter after changing more than occurring
Logical direction is consistent, in this way, may make turbine flowmeter to can be used in the hydraulic fluid flow rate measurement of this testing stand, to improve hydraulic pressure system
The accuracy of design of uniting and the reliability of performance verification.Flowmeter on the i.e. above metering device 9 is preferably turbine flowmeter.
In the present embodiment, the oil pump 2 uses variable pump.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment is further qualified in the technical solution that embodiment 1 provides, and further includes storing
Can element, the energy-accumulating element includes the first accumulator 5, the second reversal valve 15 and pressure reducing valve 11, second reversal valve 15 with
First accumulator 5, oil feed line 3, oil return line are connected by pipeline, the pressure reducing valve 11 be connected on the second reversal valve 15 with
On pipeline between oil return line；
First accumulator 5 passes through pipeline between the second reversal valve 15 and oil feed line 3, the second reversal valve 15 and the
Pipeline oil inlet between one accumulator 5；
First accumulator 5 passes through pipeline between the second reversal valve 15 and oil feed line 3, the second reversal valve 15 and the
Pipeline between one accumulator 5 is to 3 oil extraction of oil feed line；
First accumulator 5 passes through pipeline between the second reversal valve 15 and oil return line 4, the second reversal valve 15 and the
Pipeline between one accumulator 5 is to 4 oil extraction of oil return line.
Specifically, in the present solution, second reversal valve 15 is both oil feed line 3, oil return line 4 and the first accumulation of energy
Control valve between device 5, as those skilled in the art, the control valve, which can be used, commonly there is fluid communication to control energy
For example 3-position 4-way electro-hydraulic proportional valve also can be used in the valve of power, using this programme, can not only realize through the first accumulator 5
To 3 oil extraction of oil feed line, also can by the first accumulator 5 to 4 oil extraction of oil return line, and when to 4 oil extraction of oil return line due to
There is pressure reducing valve 11 in respective line, therefore hydraulic fluid pressure can change in the first accumulator 5 or compared to 4 pressure of oil return line
In the biggish situation of difference, pass through the pressure degree of regulation in oil return line 4 during the pressure reducing valve 11 raising oil extraction.The above tool
There is the energy-accumulating element of pressure reducing valve 11 accurately to change 7 work of variable displacement motor when variable displacement motor 7 especially suitable for using in executing agency
Make operating condition, also can be used in executing agency reducing when using hydraulic cylinder 8 load of motor 1 when hydraulic cylinder 8 works, utilizes accumulation of energy member
The high-efficient feature of motor 1 optimizes the efficiency of motor 1 in this testing stand whole work process when part accumulation of energy.
As those skilled in the art, in the present embodiment, shown first accumulator 5 is the high pressure accumulator on oil circuit,
Be preferably arranged to high pressure accumulator be it is multiple, in this way, the oil circuit that analog is more multi-form.But company of the high pressure accumulator on oil circuit
The form of connecing is not limited to the type of attachment of the first accumulator 5 on energy-accumulating element, is such as arranged are as follows: high pressure accumulator is connected to three four
On the end A of logical electro-hydraulic proportional valve, the end P of 3-position 4-way electro-hydraulic proportional valve is connected with oil feed line 3,3-position 4-way electro-hydraulic proportional valve
The end T be connected with oil return line 4.
It further include the first reversal valve 6, the executing agency is connected to oil feed line 3 and oil return pipe by the first reversal valve 6
Between road 4, first reversal valve 6 is for switching hydraulic oil into and out of the running of hydraulic power oil direction of executing agency.
As the specific setting form of bridge-type pipeline 92, the bridge-type pipeline 92 includes annulus line annular in shape, described
There are four check valves 93 for series connection on annulus line, and the both ends of flowmeter 91 pass through pipeline section and are connected on annulus line；
Two check valves 93 are all had on the annulus line of pipeline section two sides for connecting flowmeter 91, and are in connection flow
Two ipsilateral conducting directions in the circumferential direction along annulus line of check valve 93 of the pipeline section of meter 91 are consistent.This programme
In, i.e. there are four piping connection points on annulus line: two tie points are connected on oil return line 4 for realizing bridge-type pipeline 92
On, two tie points are respectively used to the import and export of connection flowmeter 91, as the bridge-type pipeline 92 between four points of connection surrounds four
Side shape, then the check valve 93 on two ipsilateral sides of the pipeline section for connecting flowmeter 91 is in the circumferential direction along annulus line
Upper conducting direction is consistent.92 structure of bridge-type pipeline is simple, so that realizing that the one-directional fluid flow for flowing through flowmeter 91 is at low cost.
For the non-loaded starting for realizing motor 1, setting are as follows: further include being connected between oil feed line 3 and oil return line
On-off control valve.
To enable this testing stand to simulate more operating conditions to adapt to verifying purpose or purpose of design, it is arranged are as follows: described
Executing agency includes variable displacement motor 7 and hydraulic cylinder 8, and the variable displacement motor 7 connects into parallel relationship by pipeline section with hydraulic cylinder 8；
The front and back ends of the variable displacement motor 7 and hydraulic cylinder 8 are respectively connected with on-off control valve, the variable displacement motor 7 and hydraulic
The on-off control valve of 8 front and back ends of cylinder makes in executing agency, and variable displacement motor 7 can both work independently with hydraulic cylinder 8.With
On work independently and both can work independently as variable displacement motor 7 and hydraulic cylinder 8, as those skilled in the art, to realize
Purpose is stated, by adjusting the on-off control valve, so that corresponding oil communication or disconnection can reach the purpose.
At work due to oil pump 2 and executing agency, there may be certain hydraulic fluid leaks, to improve environment and mentioning
The utilization rate of high hydraulic oil, setting are as follows: further include the oil spilling recycling machine for collecting 2 oil spilling of oil pump and executing agency's oil spilling
Structure.
As the specific implementation of oil spilling recovering mechanism, setting are as follows: the oil spilling recovering mechanism includes the second accumulator
10 and repairing pipeline 13, the repairing pipeline 13 be connected on the second accumulator 10, repairing pipeline 13 passes through pipeline section and oil pump 2
The equal pipeline connection of arrival end of oil spilling position, the oil spilling position of executing agency, oil pump 2.Using this programme, 10 phase of the second accumulator
It is internal pressure vessel compared with the external world, corresponding pipeline section blocks oil spilling position to be communicated with the atmosphere, and using this programme, pressure not only can be recycled
Power energy, while can avoid hydraulic oil and being polluted.Preferably, oil return line 4 is set as to connect with repairing pipeline 13 by pipeline section,
At this point, second accumulator 10 can be used as storage oil vessel.
It further include being connected on overflowing between oil feed line 3 and repairing pipeline 13 for the safety for ensureing the work of this testing stand
Flow valve 12.Preferably, it is multiple for being set as the overflow valve 12, and including proportional pressure control valve 12, in this way, can pass through multiple overflows
Safety when 12 effective guarantee oil circuit of valve works, while may make oil circuit maximum pressure adjustable.
For convenience of 1 running parameter of motor is obtained, it is arranged are as follows: further include the torque rotational speed meters 14 being connected with motor 1.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (10)
1. a kind of electro-hydraulic experimental bench including motor (1), the oil pump (2) being connected on motor (1), is connected to oil pump (2) outlet end
On oil feed line (3), be connected on oil pump (2) arrival end oil return line (4), be connected to oil feed line (3) and oil return pipe
Executing agency between road (4), which is characterized in that further include the metering device (9) being connected on oil return line (4), the meter
Measuring device (9) includes flowmeter (91) and bridge-type pipeline (92), and the bridge-type pipeline (92) is connected on oil return line (4), stream
Meter (91) is connected on bridge-type pipeline (92), and flowmeter (91) is used to measure the fluid flow for flowing through bridge-type pipeline (92),
After the import of the bridge-type pipeline (92) and outlet port variation, the fluid circulating direction for flowing through flowmeter (91) is consistent.
2. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that it further include energy-accumulating element, the accumulation of energy member
Part includes the first accumulator (5), the second reversal valve (15) and pressure reducing valve (11), second reversal valve (15) and the first accumulator
(5), oil feed line (3), oil return line (4) are connected by pipeline, and the pressure reducing valve (11) is connected on the second reversal valve (15)
On pipeline between oil return line (4)；
First accumulator (5) passes through pipeline, the second reversal valve (15) between the second reversal valve (15) and oil feed line (3)
With the pipeline oil inlet between the first accumulator (5)；
First accumulator (5) passes through pipeline, the second reversal valve (15) between the second reversal valve (15) and oil feed line (3)
Pipeline between the first accumulator (5) is to oil feed line (3) oil extraction；
First accumulator (5) passes through pipeline, the second reversal valve (15) between the second reversal valve (15) and oil return line (4)
Pipeline between the first accumulator (5) is to oil return line (4) oil extraction.
3. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that it further include the first reversal valve (6), it is described to hold
Row mechanism is connected between oil feed line (3) and oil return line (4) by the first reversal valve (6), and first reversal valve (6) is used
In switching hydraulic oil into and out of the running of hydraulic power oil direction of executing agency.
4. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that the bridge-type pipeline (92) includes annular in shape
Annulus line, there are four check valve (93), the both ends of flowmeter (91) pass through pipeline section and connect for series connection on the annulus line
On annulus line；
Two check valves (93) are all had on the annulus line of pipeline section two sides for connecting flowmeter (91), and are in connection flow
Two ipsilateral check valve (93) conducting directions in the circumferential direction along annulus line of the pipeline section of meter (91) are consistent.
5. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that further include be connected on oil feed line (3) with
On-off control valve between oil return line (4).
6. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that the executing agency includes variable displacement motor
(7) and hydraulic cylinder (8), the variable displacement motor (7) connect into parallel relationship by pipeline section with hydraulic cylinder (8)；
The front and back ends of the variable displacement motor (7) and hydraulic cylinder (8) are respectively connected with on-off control valve, the variable displacement motor (7) and liquid
The on-off control valve of cylinder pressure (8) front and back ends makes in executing agency, and variable displacement motor (7) both can be independent with hydraulic cylinder (8)
Work.
7. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that further include for collecting oil pump (2) oil spilling
And the oil spilling recovering mechanism of executing agency's oil spilling.
8. a kind of electro-hydraulic experimental bench according to claim 7, which is characterized in that the oil spilling recovering mechanism includes the second storage
Energy device (10) and repairing pipeline (13), the repairing pipeline (13) are connected on the second accumulator (10), and repairing pipeline (13) is logical
Pipeline section is crossed to connect with the equal pipeline of arrival end of the oil spilling position of oil pump (2), the oil spilling position of executing agency, oil pump (2).
9. a kind of electro-hydraulic experimental bench according to claim 8, which is characterized in that further include be connected on oil feed line (3) with
Overflow valve (12) between repairing pipeline (13).
10. a kind of electro-hydraulic experimental bench according to claim 1, which is characterized in that further include the torque being connected with motor (1)
Rotational speed meters (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821788375.9U CN208907854U (en) | 2018-10-31 | 2018-10-31 | A kind of electro-hydraulic experimental bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821788375.9U CN208907854U (en) | 2018-10-31 | 2018-10-31 | A kind of electro-hydraulic experimental bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208907854U true CN208907854U (en) | 2019-05-28 |
Family
ID=66614655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821788375.9U Expired - Fee Related CN208907854U (en) | 2018-10-31 | 2018-10-31 | A kind of electro-hydraulic experimental bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208907854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506905A (en) * | 2018-10-31 | 2019-03-22 | 西南交通大学 | A kind of electro-hydraulic testing stand |
-
2018
- 2018-10-31 CN CN201821788375.9U patent/CN208907854U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506905A (en) * | 2018-10-31 | 2019-03-22 | 西南交通大学 | A kind of electro-hydraulic testing stand |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101871478B (en) | Loading device of hydraulic motor test board | |
| CN203784021U (en) | Multifunctional comprehensive hydraulic experiment device | |
| CN107355684A (en) | A kind of accident of pipeline network waterpower monitoring experimental system and its method for realizing fault identification | |
| CN208907854U (en) | A kind of electro-hydraulic experimental bench | |
| CN203615981U (en) | Device for monitoring oil consumption of internal combustion engine | |
| CN104481971A (en) | Torque-type hydraulic pump and hydraulic motor power recovery test platform | |
| CN206409467U (en) | A kind of hydraulic system for being used to test hydraulic motor | |
| CN107366649A (en) | A kind of large-tonnage tower crane twin-tub jacking apparatus and electrohydraulic control system | |
| CN109506905A (en) | A kind of electro-hydraulic testing stand | |
| CN205999974U (en) | A kind of water system | |
| CN203335504U (en) | Power steering gear performance testing hydraulic device | |
| CN204403051U (en) | A kind of torsion type oil hydraulic pump and oil hydraulic motor Power Recovery test platform | |
| CN114483563B (en) | Four-quadrant hydraulic pump performance optimization test system and method | |
| CN207894596U (en) | A kind of Reservoir Charge-Up valve reliability test system | |
| CN103775436A (en) | Modularly-parallel, multi-machine and energy-saving reliability testing device for hydraulic pumps and hydraulic motors | |
| CN202149102U (en) | Novel test bed device of hydraulic valve | |
| CN107339286B (en) | A kind of mechanical compensation Power Recovery type pump motor test platform and its method | |
| CN102213635B (en) | Testing system for main valve leakage of hydraulic excavator | |
| CN208458802U (en) | A kind of vortex-shedding meter of double check | |
| CN106441800A (en) | Modularized hydraulic circulating system of hydraulic mechanical model test stand | |
| CN107941501B (en) | Reliability test system and method for accumulator charge valve | |
| CN214837527U (en) | Hydraulic system of hydraulic motor test bed | |
| CN105605004B (en) | The hydraulic system that a kind of driving equipment rises | |
| CN205383134U (en) | Hydro -cylinder load return circuit analogue test device | |
| CN213838891U (en) | Flow pressure testing device for vane pump |
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: 20190528 Termination date: 20211031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |