CN105317785B - Development machine multifunctional hydraulic testing stand - Google Patents
Development machine multifunctional hydraulic testing stand Download PDFInfo
- Publication number
- CN105317785B CN105317785B CN201510834647.9A CN201510834647A CN105317785B CN 105317785 B CN105317785 B CN 105317785B CN 201510834647 A CN201510834647 A CN 201510834647A CN 105317785 B CN105317785 B CN 105317785B
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- pump
- hydraulic
- oil
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the technical fields of the testing experiment equipment of hydraulic system in coal mine heading equipment, more particularly to a kind of development machine multifunctional hydraulic testing stand, solve the experimental rig in the prior art without being directed to tunneling machine hydraulic system, the debugging of hydraulic system, which needs to be mounted in complete machine, debugs, the problem of causing waste of time that can pollute again to system, including main test module unit, main test module unit includes hydraulic pump test module, hydraulic motor test module, hydraulic cylinder test module and hydraulic valve test module.The present invention is component experimental study of the development machine in using advance technology early period provided above, and that shortens complete machine designs and develops the period, and product is made to seize market at the first time.It can also be improved the service performance of development machine key components simultaneously, improve whole aircraft reliability, play the maximum effect of development machine, improve development machine product core competitive in the market.The present invention has biggish market prospects.
Description
Technical field
The invention belongs to the technical fields of the testing experiment equipment of hydraulic system in coal mine heading equipment, and in particular to a kind of
Development machine multifunctional hydraulic testing stand.
Background technique
With the development of China's hydraulic industry, hydraulic system has been widely applied to China's coal-mine mining machinery field,
The load-sensitive control for using load-sensitive formula variable pump and load-sensitive proportional multi-way valve to form for the first time such as tunneling machine hydraulic system
System (i.e. LS, LUDV system) processed, the system with its reliable performance, it is compact-sized, multi-functional the features such as development machine row at home
It is widely used in industry.The application of the technology substantially increases the service performance of domestic development machine, is China's development machine
Development has accumulated technical experience abundant, has established technical foundation for the update of development machine.But in the property of key components
Can test and debug aspect basic research work and means be still short of very much, such as plunger variable pump, proportional multi-path reversing valve,
Oil cylinder, hydraulic motor carry out function debugging and performance test without relevant experimental rig before complete machine completes installation, can only will
All components carry out concentration debugging after being installed in complete machine.In this way, these hydraulic key components occur in debugging process
It must locally even will just be disassembled entire hydraulic system pipeline when performance, quality problems.Above situation will increase enterprise first
Material Cost and human cost can maximumlly have a negative impact to company interest is realized.Secondly, doing over again can increase to worker
Labor intensity influences physical and mental health, or even forms security risk.The processing time broken down development machine underground can also be extended,
The production of user is caused to seriously affect.Furthermore the local pressure loss increase of hydraulic system, calorific value increase, efficiency can be made
It reduces, is not only unfavorable for playing optimum performance, but also the service life of Hydraulic Elements can be reduced.
Summary of the invention
The present invention in order to solve in the prior art without be directed to tunneling machine hydraulic system experimental rig, the tune of hydraulic system
Examination needs to be mounted in complete machine the problem of debugging, causing waste of time that can pollute again to system, provides a kind of development machine
With multifunctional hydraulic testing stand.
The present invention adopts the following technical scheme that realization:
A kind of development machine multifunctional hydraulic testing stand, including main test module unit, main test module unit includes liquid
Press pump test module, hydraulic motor test module, hydraulic cylinder test module and hydraulic valve test module,
The hydraulic pump test module drives a low pressure and mass flow oil pump to provide power for tested pump by a motor
Source loads tested pump by proportional pressure control valve, by pressure tester and flow tester measure tested pump pressure, flow,
Leakage rate, by two position four-way solenoid valves control electromagnetic relief valve to tested pump carry out overload protection, test loading section by
Proportional pressure control valve and flow tester are controled and monitored, and proportional pressure control valve can be loaded with continuous uniform, pass through flow sensing
Device, pressure sensor show data feedback control proportional pressure control valve, then realize the pressure change to tested pump, changes in flow rate and
The test of the projects such as power, the efficiency change of tested pump；
The hydraulic motor test module drives a high pressure load pump to provide power for tested motor by a motor
Source loads tested motor by proportional pressure control valve, measures tested motor pressure, stream by pressure tester and flow tester
Amount, leakage rate, meanwhile, it is double to bidirectional ram oil pump feed using the low pressure and mass flow oil pump of hydraulic pump test module as power source
It realizes to plunger pump and tested motor to dragging, the torque value of tested motor can be tested, i.e., tested by two sets of pump groups, wherein one
Set pump provides oil sources by bridge rectifier circuit for motor, another set of for test load pump group, power source output hydraulic pressure oil, control
Part is changed by the steering that proportional reversing valve controls motor, and the pressure change of motor, Jin Ershi are controlled by proportional pressure control valve
Now to the test of the pilot project of tested motor；
The hydraulic cylinder test module drives a sundstrand pump to provide power source, group for tested oil cylinder by a motor
It closes pump to be made of low pressure gear pump and high-pressure plunger pump, measures the pressure of tested oil cylinder by pressure tester, it is high when action test
Hydraulic plunger pump unloading, low pressure gear pump provide low pressure and mass flow；When bulge test, high-pressure plunger pump load provides high pressure small stream
Amount is effectively reduced motor in entire test and does reactive power；Operation stability test, low pressure seal performance test are equal
Test by the low pressure gear pump in sundstrand pump；For high pressure i.e. 110% operating pressure experiments of sealing performance then by sundstrand pump
In high-pressure plunger pump tested；
The power source of the hydraulic valve test module and the high pressure load pump of hydraulic motor test module are shared, control section
The outbound course of hydraulic oil is controlled by reversal valve, wherein flow is detected by traffic tester, and loading section is by ratio
The pressure parameter of overflow valve and pressure sensor real-time monitoring reversal valve, to realize the test to the pilot project of hydraulic valve.
The low pressure and mass flow oil pump oil inlet of the hydraulic pump test module is connected to through shut-off valve II, oil absorption filter II
Fuel tank, low pressure and mass flow oil pump out of the mouth connect the oil inlet of each test pump through check valve III, 2/2-way electromagnetic pilot control valve I
Mouthful, the oil outlet of each test pump is sequentially connected the oil inlet of high-pressure ball valve, check valve, and the oil outlet of each check valve divides two-way, one
Road connects pressure tester, another way connects proportional pressure control valve, and pressure tester is connected to fuel tank, proportional overflow through electromagnetic relief valve
Valve is connected to fuel tank through flow tester.
The high pressure load pump of the hydraulic motor test module is Variable plunger pump, and Variable plunger pump oil outlet passes through list
The oil inlet of electromagnetic pilot reversal valve III is connected to valve VIII, the unloading port of electromagnetic pilot reversal valve III connects fuel tank, electromagnetic pilot
III liang of oil outlet of reversal valve connects tested hydraulic motor through high-pressure ball valve, and tested hydraulic motor is also connected with flow tester and pressure
Tester；Meanwhile the low pressure and mass flow oil pump in hydraulic pump test module also provides power source, low pressure and mass flow oil pump out of the mouth
The oil inlet of 2/2-way electromagnetic pilot control valve II and overflow valve III is connected, the oil outlet of overflow valve III directly connects with fuel tank
It connects；The oil outlet of 2/2-way electromagnetic pilot control valve II is separately connected VII oil inlet of pressure tester VIII and check valve, unidirectionally
VII oil outlet of valve through high pressure filter connect bridge rectifier oil inlet, bridge rectifier oil outlet connection bidirectional ram pump into,
The oil inlet of oil outlet and overflow valve V, overflow valve VI adds bidirectional ram pump by overflow valve V and the realization of overflow valve VI
It carries, proportional pressure control valve carries out overload protection to bridge rectifier, and the oil outlet of overflow valve V, overflow valve VI and proportional pressure control valve is direct
It is connect with fuel tank.
The low pressure gear pump oil outlet connection check valve I and overflow valve I of the hydraulic cylinder test module, check valve I
Oil outlet connects electromagnetic pilot reversal valve I, and I oil return opening of electromagnetic pilot reversal valve is connected to fuel tank, and electromagnetic pilot reversal valve I is through hydraulic control
Check valve and high-pressure ball valve I, high-pressure ball valve II connect tested oil cylinder；Low pressure gear pump is also connected with another high-pressure plunger pump formation group
Pump is closed, another high-pressure plunger pump connects another set of circuit, and high-pressure plunger pump oil outlet connects check valve II and overflow valve II, single
II oil inlet of electromagnetic pilot reversal valve is connected to valve II, II oil return opening of electromagnetic pilot reversal valve is connected to fuel tank, electromagnetic pilot commutation
Valve II connects tested oil cylinder through hydraulic control lock and one-way throttle valve.
The oil outlet for the Variable plunger pump that the hydraulic valve test module and the hydraulic motor test module share
Electromagnetic pilot reversal valve IV is connected through check valve, the unloading port of electromagnetic pilot reversal valve IV is connected to fuel tank through flow tester, electricity
The oil outlet of magnetic pilot reversing valve IV connects tested hydraulic valve bank, is tested hydraulic valve bank connecting moves and shows oil cylinder.
The present invention has the following technical effect that compared with the prior art
The present invention completes to survey the performance of hydraulic oil pump, hydraulic motor, hydraulic cylinder, hydraulic valve by each test cell
Examination, obtains performance superiority and inferiority of the related data to determination component.Show following features in use:
1) hydraulic system is able to achieve to multiple executive modules of different loads pressure simultaneously using LUDV load feedback technology
Control, test quickly and precisely is carried out, each executive module is non-interference；
2) pressure is high, and rated pressure 31.5MPa, continuous work pressure is up to 35MPa in short-term；
3) function is more, and can five major class hydraulic packages be carried out with delivery test and type approval test and to hydraulic package and can be
System carries out development test, and hydraulic system uses modularized design, and hydraulic system is managed using the design of special module+general module
Read, have many advantages, such as it is compact-sized, install concentrate, occupy little space, test scope it is wide, module utilization is high to realize liquid as far as possible
The functional diversities of testing stand, design are pressed to simplify；
4) manipulation and control method are advanced, and the pressure and flow of testing stand are controlled using proportional technique, and torque, revolving speed are collecting
Indoor electric remote-control is controlled, oil temperature is automatically controlled and shown, oil level, chilled water are shown automatically, plugged filter, oil leak, electricity
Gas failure etc. can automatic alarm；
5) energy conservation and environmental protection, hydraulic test bench is high pressure, Mass flow system, in order to improve system effectiveness, reduction system hair
Heat is adjusted flow using electrical-liquid control variable pump using electro-hydraulic proportional flow regulation technology.
6) the technology of the present invention index, system maximum pressure: 31.5MPa；System maximum stream flow: 400L/min；Hydraulic system
Power: 132kW；Most test valve group quantity: 7.
In conclusion the present invention greatly pushes the technology of tunneling machine hydraulic system to develop, for basic theoretical research and pass
The exploitation of key component provides necessary means of testing and data are supported.It is development machine in using advance technology early period provided above
Component experimental study, that shortens complete machine designs and develops the period, and product is made to seize market at the first time.It can also mention simultaneously
The service performance of high development machine key components improves whole aircraft reliability, plays the maximum effect of development machine, improves development machine and produces
Product core competitive in the market.The present invention has biggish market prospects.
Detailed description of the invention
Fig. 1 is the part the principle of the present invention figure c,
Fig. 2 is the schematic diagram of Loadsensing control LS,
Fig. 3 is the schematic diagram that load-transducing current divider controls LUDV,
Fig. 4 is oil cylinder pressure maintaining curve graph,
Pressue-graph (sample rate 1ms, record time are min) when Fig. 5 is cylinder efficient,
Fig. 6 is that A11VO pumps performance chart,
Fig. 7 is the part principle of the invention figure a, is connected with Fig. 1 f-f ',
Fig. 8 is the part principle of the invention figure b, is connected with Fig. 7 i-i ', m-m ',
Fig. 9 is the part principle of the invention figure d, is connected with Fig. 8 j-j ', n-n ',
Figure 10 is the part principle of the invention figure e.
In figure, 1- motor I, 2- sundstrand pump, 3- overflow valve I, 4- check valve I, 5.1- pressure tester I, 5.2- pressure
Tester II, 5.3- pressure tester III, 5.4- pressure tester IV, 5.5- pressure tester V, 5.6- pressure tester VI,
5.7- pressure tester VII, 5.8- pressure tester VIII, 6.1- electromagnetic pilot reversal valve I, 7.1- hydraulic control one-way valve, 8- is unidirectionally saved
Flow valve, 9.1- oil-suction oil filter I, 9.2- oil-suction oil filter II, 9.3- oil-suction oil filter III, 9.4- oil-suction oil filter IV, 9.5-
Oil-suction oil filter V, 10.1- high-pressure ball valve I, 10.2- high-pressure ball valve II, 11- check valve II, 12- overflow valve II, 13- motor
II, 14- low pressure and mass flow oil pump, 15.1- overflow valve III, 15.2- overflow valve IV, 16- check valve III, 17.1- 2/2-way electricity
Magnetic pilot control valve I (normally closed), 17.2- 2/2-way electromagnetic pilot control valve II (normally closed), 18.1- high-pressure ball valve I, 18.2-
High-pressure ball valve II, 18.3- high-pressure ball valve III, 19.1- check valve IV, 19.2- check valve V, 19.3- check valve VI, 20.1- ratio
Example overflow valve I, 20.2- proportional pressure control valve II, 20.3- proportional pressure control valve III, 21.1- electromagnetic relief valve I, 21.2- electromagnetism overflow
Valve II, 21.3- electromagnetic relief valve III, 22.1- flow tester I, 22.2- flow tester II, 22.3- flow tester III,
22.4- flow tester IV, 22.5- flow tester V, 22.6- flow tester VI, 22.7- flow tester VII, 23- is mono-
To valve VII, 24- high pressure filter, 25- bridge rectifier, 26- proportional pressure control valve, 27.1- overflow valve V, 27.2- overflow valve VI,
28- bidirectional ram pump, 29- motor III, 30.1- shut-off valve I, 30.2- shut-off valve II, 30.3- shut-off valve III, 31- variable column
Plug pump, 32- electromagnetic relief valve, 33- check valve VIII, 34- pressure tester Ⅸ, 35.1- flow tester I, 35.2- flow rate test
Instrument II, 36.1- electromagnetic pilot reversal valve II, 36.2- electromagnetic pilot reversal valve III, 36.3- electromagnetic pilot reversal valve IV, 37.1-
One way sequence valve I, 37.2- one way sequence valve II, 38.1- high-pressure ball valve I, 38.2- high-pressure ball valve II, 38.3- high-pressure ball valve III,
38.4- high-pressure ball valve IV, 39- hydraulic control lock, 40.1- movement display oil cylinder I, 40.2- movement display oil cylinder II, 40.3- movement are aobvious
Show oil cylinder III, 41- motor IV, 42- low pressure ball valve, 43- oil pump, 45- pressure tester Ⅹ, 46- check valve Ⅸ, 47- cooling
Device, 48- oil filter, 49- fluid level controller, 50- heater, 51- test oil cylinder, 52- test pump, 53- pressure-compensated valve, 54-
Load sensing circuit, 55- current divider, 56- are tested hydraulic valve bank；A- hydraulic pump test module, b- hydraulic motor test module, c-
Hydraulic cylinder test module, d- hydraulic valve test module, e- oil cylinder function accessories.
Specific embodiment
In conjunction with attached drawing, specific embodiments of the present invention will be further explained.
1. the working principle of LS and LUDV system:
Our tunneling machine hydraulic systems generally use Loadsensing control system at present, that is, LS load feedback controls skill
Art.The system usually its component part is made of variable pump, load-transducing multi-way valve.Using load-sensing variable system, energy is pumped
It is enough that the swash plate pivot angle of variable pump is adjusted automatically by LS mouthfuls of load pressure according to the case where load, to control pump
Flow is consistently equal to flow needed for executive module.When load pressure increases, the pivot angle of pump is turned down automatically, and the flow of pump reduces.
Conversely, the pivot angle of pump increases, output flow becomes larger.
But LS load-transducing technology also has disadvantage, and system is working properly in order to guarantee, pump conveying pressure must and highest
Load pressure is adapted, i.e., Loadsensing control only works in highest load circuit, and the circuit low to other pressure loads
Pressure compensation is used, so that valve port pressure difference keeps definite value.The flow for requiring work system when valve port is opened entirely is more than the confession of pump
When the limit of oily ability, the speed on highest load circuit can be reduced rapidly until stopping, so that system be made to lose composite move
The coordination ability.
Load-transducing current divider is provided in LUDV hydraulic system, to overcome lacking for common conventional load sensing and controlling system
Point, main function is to guarantee that the operating rate of all executive modules when for shortage of oil declines in proportion, to obtain and load
The unrelated control of pressure.
Load sensing current divider, main function are as follows: can guarantee in the institute of the when for shortage of oil are provided in LUDV hydraulic system
There is the operating rate of executive module to decline in proportion, to obtain the control unrelated with load pressure.Load sensing (LS) control system
It unites as shown in Figure 2,3 with the difference of load sensing current divider (LUDV) working principle.As can be seen from the figure it is pressed in LUDV system
Force compensating valve is located at after throttle orifice A1 and A2, therefore is known as the load sensing controlled system with secon-dary pressure compensation valve.In Fig. 2
The load pressure of two executive modules senses the pressure-compensated valve of respective reversal valve respectively, wherein higher pressure P is through shuttle valve
It is transmitted to variable pump again.And in Fig. 3, maximum load pressure not only senses in variable pump, also communicates to each pressure compensation
Valve.Pressure-compensated valve in Fig. 2 be based on determine subtractive pressure principle, and the assignment of traffic type pressure-compensated valve in Fig. 3 be based on than
Example principle of overflow, maximum load pressure pass to all pressure-compensated valves, while load sensing control as ratio control signal
Device processed also under the action of maximum load pressure, controls the discharge capacity of hydraulic pump, makes the output pressure of pump compared with maximum load
Pressure is higher by a fixed value, and the pressure drop of multi-way valve valve ports all so is all controlled in same value.Even if there is fuel feeding in pump
Insufficient phenomenon, although the speed of executing agency can decline, since the pressure drop of all valve ports is consistent, each working machine
The operating rate of structure can also keep proportionate relationship by the opening area of valve, to guarantee the accuracy of system acting.
LUDV load-transducing technology is selected in the hydraulic test bench system, due to assignment of traffic type pressure-compensated valve
Occur, so that the load sensing controlled system of Dan Bengduo executing agency becomes more practical.Therefore, it is passed using the load of this valve
Sensing control testing stand uses single oil pump feed mode, so that complicated interflow control function is eliminated, so that hydraulic system and pump
Structure become more simple and practical.
In conclusion LUDV system has following main feature:
(1) it is able to achieve multiple executive modules to different loads pressure while the control of progress quickly and precisely, it is each to hold
Row component is non-interference.
(2) good operation performance executes starting point and operating rate (flow) the only angle (opening of multi-way valve with control crank
Degree) related (Q=f<A>), it is unrelated with load pressure,
(3) superior microcontroller performance is convenient for fine manipulation and multi-function operation.
(4) any executive module is possible to dominate the full flow of pump or the flow of needs.
(5) more executive module scalabilities are easy to increase available executive module by additional valve.
(6) single-pump system can be used, whole system package be compact, integration degree is high, and system adapter tube is few, installs and uses
At low cost, failure rate is low.
The principle of this multifunction hydraulic testing stand is as shown in Figure 1.This testing stand part drives sundstrand pump by a motor
(low pressure gear pump and high-pressure plunger pump composition) provides power source, carries out plunger pump when form action test and unloads, gear pump mentions
For low pressure and mass flow.Plunger pump loads when for bulge test, provides high-pressure low-flow, is effectively reduced in entire test
Motor does reactive power.The test of oil pump and the test of motor share a low-lift pump and provide the oil sources of low-pressure, big flow；
The high-pressure pump of hydraulic motor and the pump of hydraulic pilot valve share, and improve the utilization rate of testing stand element, reduce testing stand element
Type, facilitate the maintenance of testing stand.
2. basic composition of the invention:
A kind of development machine multifunctional hydraulic testing stand, including main test module unit, main test module unit includes liquid
Press pump test module, hydraulic motor test module, hydraulic cylinder test module and hydraulic valve test module；
Hydraulic pump test module includes body pedestal, test main motor, oil pump test seat, shaft coupling, test valve group, torque
Speed probe, pressure sensor, subject pump seat, pipeline and electrical junction box composition；
Hydraulic motor test module includes body pedestal, hydraulic load brake, motor test stand, shaft coupling, test valve
Group, torque rotary speed sensor, pressure sensor, pipeline and electrical junction box；
Hydraulic cylinder test module and hydraulic valve test module include frame body, test valve group, pressure sensor.
The hydraulic pump test module drives a low pressure and mass flow oil pump to provide power for tested pump by a motor
Source loads tested pump by proportional pressure control valve, by pressure tester and flow tester measure tested pump pressure, flow,
Leakage rate, by two position four-way solenoid valves control electromagnetic relief valve to oil pump carry out overload protection, test loading section by than
Example overflow valve and flow tester controled and monitored, proportional pressure control valve can be loaded with continuous uniform, by flow sensor,
Pressure sensor shows that data feedback controls proportional pressure control valve, then realizes the pressure change, changes in flow rate and examination to hydraulic pump
Test the test of the projects such as power, the efficiency change of pump；Specifically, the low pressure and mass flow oil pump of the hydraulic pump test module
Oil inlet is connected to oil cylinder through reversal valve, oil absorption filter, and low pressure and mass flow oil pump out of the mouth is first through check valve, 2/2-way electromagnetism
The oil inlet that control valve connects each test pump is led, the oil outlet of each test pump is sequentially connected the oil outlet of high-pressure ball valve, check valve,
The oil inlet of each check valve divides two-way, connects pressure tester, another way connection proportional pressure control valve all the way, and pressure tester is through electricity
Magnetic overflow valve is connected to fuel tank, and proportional pressure control valve is connected to fuel tank through flow tester.
The hydraulic motor test module drives a high pressure load pump to provide power for tested motor by a motor
Source loads tested motor by proportional pressure control valve, measures tested motor pressure, stream by pressure tester and flow tester
Amount, leakage rate, meanwhile, it is double to bidirectional ram oil pump feed using the low pressure and mass flow oil pump of hydraulic pump test module as power source
It realizes to plunger pump and tested motor to dragging, the torque value of tested motor can be tested, i.e., tested by two sets of pump groups, wherein one
Set pump provides oil sources by bridge rectifier circuit for motor, another set of for test load pump group, power source output hydraulic pressure oil, control
Part is changed by the steering that proportional reversing valve controls motor, and the pressure change of motor, Jin Ershi are controlled by proportional pressure control valve
Now to the test of the pilot project of hydraulic motor；Specifically the high pressure load pump of the hydraulic motor test module is variable
Plunger pump, Variable plunger pump oil outlet connect the oil inlet of three-position four-way electromagnetic directional valve, 3-position 4-way electromagnetism by check valve
The overflow port of reversal valve connects fuel tank through electromagnetic relief valve, and two oil outlet of three-position four-way electromagnetic directional valve is respectively through sequence valve, height
Pressure ball valve connects tested hydraulic motor, and tested hydraulic motor is also connected with flow tester and pressure tester；Meanwhile hydraulic pump is surveyed
Low pressure and mass flow oil pump in die trial block also provides power source, and low pressure and mass flow oil pump out of the mouth connects 2/2-way electromagnetic pilot
The oil outlet of the oil inlet of control valve and overflow valve, overflow valve is directly connect with fuel tank；2/2-way electromagnetic pilot control valve
Oil outlet is separately connected pressure gauge and check valve oil inlet, and it is whole that check valve oil outlet through check valve connects bridge-type with high pressure filter
Flow back to road oil inlet, the oil inlet into and out of hydraulic fluid port and overflow valve of the oil outlet connection bidirectional ram pump of commutating circuit, by overflowing
Load of the valve realization to bidirectional ram pump is flowed, precursor overflow valve carries out overload protection, overflow valve and guide to bridge rectifier circuit
The oil outlet of overflow valve is directly connect with fuel tank.
The hydraulic cylinder test module drives a sundstrand pump to provide power source, group for tested oil cylinder by a motor
It closes pump to be made of low pressure gear pump and high-pressure plunger pump, measures the pressure of tested oil cylinder by pressure tester, it is high when action test
Hydraulic plunger pump unloading, low pressure gear pump provide low pressure and mass flow；When bulge test, high-pressure plunger pump load provides high pressure small stream
Amount is effectively reduced motor in entire test and does reactive power；Operation stability test, low pressure seal performance test are equal
It is tested by sundstrand pump low-pressure, huge discharge pump group；For high pressure i.e. 110% operating pressure experiments of sealing performance then by combining
Pump high-pressure pump is tested；Specifically the low pressure gear pump oil outlet connection check valve of the hydraulic cylinder test module and
Overflow valve, check valve oil outlet connect electromagnetic pilot reversal valve, and electromagnetic pilot reversal valve oil return opening is connected to fuel tank through overflow valve, electricity
Magnetic pilot reversing valve connects tested oil cylinder through hydraulic control lock and one way sequence valve；Low pressure gear pump is also connected with another high-pressure plunger pump shape
At sundstrand pump, another high-pressure plunger pump connects another set of circuit, and high-pressure plunger pump oil outlet connects check valve and overflow valve, single
Electromagnetic pilot reversal valve oil inlet is connected to valve, electromagnetic pilot reversal valve oil return opening is connected to fuel tank through overflow valve, and electromagnetic pilot changes
Tested oil cylinder is connected through hydraulic control lock and one way sequence valve to valve, the hydraulic control lock in two sets of circuits interconnects, one way sequence valve is mutual
Connection.
The power source of the hydraulic valve test module and the high pressure load pump of hydraulic motor test module are shared, control section
The outbound course of hydraulic oil is controlled by reversal valve, wherein flow is detected by traffic tester, and loading section is by ratio
The parameters such as pressure, temperature, the flow of overflow valve and pressure sensor real-time monitoring reversal valve, to realize the test to hydraulic valve
The test of project；The oil outlet for the Variable plunger pump that specifically the hydraulic valve test module and hydraulic motor share is through list
Three-position four-way electromagnetic directional valve is connected to valve, the unloading port of three-position four-way electromagnetic directional valve is connected to fuel tank through flow tester, and three
The oil outlet of position four-way electromagnetic reversing valve connects tested hydraulic valve bank, is tested hydraulic valve bank connecting moves and shows oil cylinder.
The course of work of each module is as follows:
Hydraulic pump test module, the hydraulic pump access diagram test pump position that need to be tested, drives oil pump by a motor
Power source is provided for test pump, hydraulic oil high-pressure ball valve, check valve reach test pipeline, are carried out by proportional pressure control valve to tested pump
Load, pressure, flow are measured by pressure tester and flow tester respectively, pass through two four-ways for protection test pump
The electromagnetic relief valve of solenoid valve control carries out overload protection, to reach the test to hydraulic pump.The hydraulic pump test module with
The various parameters (pressure, flow, amount of leakage etc.) pumped to development machine with all hydraulic are tested, to tunnel for hydraulic pump
Type selecting on machine uses and provides Data safeguard.
Hydraulic motor test module drives Variable plunger pump to provide power source by a motor, and high pressure oil passes through check valve
Into three-position four-way electromagnetic directional valve, the overload protection of hydraulic pump is completed by electromagnetic relief valve, when oil pressure reaches system design
Electromagnetic relief valve acts on draining when maximum pressure, to protect hydraulic system.Oil liquid enters sequence valve after solenoid directional control valve,
Tested hydraulic motor is entered by high-pressure ball valve again, the basic ginseng of hydraulic motor is tested by flow tester and pressure tester
It counts such as: hydraulic motor displacement, efficiency, variable characteristics, amount of leakage, then pass through the auxiliary realization hydraulic motor of other test modules
Low-speed performance test, load test, continuous commutation test etc., to tested with hydraulic motor development machine comprehensively, with
Guarantee that theoretical calculation when design hydraulic system reaches unified with the motor actually selected.
Hydraulic cylinder test module mainly completes the test of all kinds of hydraulic cylinder basic parameters and working performance, specifically reaches
Content of the test have the lowest starting pressure characteristic of oil cylinder, minimum stabilized speed, leakage test, load efficiency test, pressure resistance
Test, full-load test and stroke inspection of hydraulic cylinder etc..It is driven by a motor hydraulic pump and provides power source for oil cylinder test module, it is high
Pressure oil respectively enters three-position four-way electromagnetic directional valve by check valve, and the overload protection of hydraulic pump is completed by overflow valve, by changing
Enter hydraulic control one-way valve 7 after to valve and reach tested hydraulic cylinder, the leakage test, resistance to of hydraulic cylinder is tested by pressure tester
Pressure test, the stroke inspection of hydraulic cylinder；And hydraulic control lock is successively entered by the high pressure oil of reversal valve and one way sequence valve enter by
Lowest starting pressure characteristic, the minimum stabilized speed, load efficiency of hydraulic cylinder can be tested by dependence test instrument by surveying oil cylinder
Test etc..And the full-load test of hydraulic cylinder then needs the completion that is used in combination in two sets of circuits, is used by two sets of the comprehensive of circuit,
Reach and hydraulic cylinder tested comprehensively, for development machine design in the calculating of hydraulic cylinder, the selection of cylinder diameter, cylinder interior structure
Design, matching of hydraulic cylinder load etc. provide actually detected.
Hydraulic valve test module drives Variable plunger pump to provide power source, high pressure oil by the motor shared with hydraulic motor
Enter three-position four-way electromagnetic directional valve by check valve, the overload protection of hydraulic pump is completed by overflow valve, and oil liquid is changed by electromagnetism
Enter shown tested hydraulic valve bank after to valve, is to be tried needed for hydraulic valve bank test by flow tester and pressure tester
Oil cylinder is tested, by valve group test module, tests the different performance of all kinds of valve groups of development machine.Heading equipment hydraulic valve bank is main
Including multiple directional control valve, balanced valve, pressure reducing valve, overflow valve, check valve etc..
3. the main test item of the present invention:
1) the function detection, commutation ability test, pressure loss measurement of reversal valve, safe valve performance, overload sealing performance,
Back pressure test.
2) overflow valve, pressure reducing valve, the resistance to pressure of balanced valve, range of regulation and pressure stability, internal leakage, pressure damage
Mistake, steady state pressure-discharge characteristic, leakproofness, back pressure test.
3) resistance to pressure of check valve, internal leakage, positive pressure loss, cracking pressure, leakproofness.
And hydraulic valve test module and hydraulic pump test module are used in conjunction with that can effectively to test development machine hydraulic
LS, LUDV signal feedback in system between hydraulic pump and valve group, to be tested hydraulic system for development machine, be tested comprehensively
Card, calibration, it is ideal to guarantee that the design of hydraulic system achievees the effect that in practice, is the reliable of tunneling machine hydraulic system
Property, high efficiency provide foundation.
The present invention designs different test modules according to the characteristic of hydraulic components different in coal mine heading equipment, then will be more
A test module is assembled, which not only simplifies the space occupied of hydraulic test bench, and improves hydraulic test bench
Reliability and utilization rate have been designed and developed out using electrichydraulic control, data acquisition and computer-aided control technology suitable for more
The Development of Hydraulic Synthetic Test-bed of type, more specifications, wide scope.
4. test case of the present invention:
Multifunctional hydraulic experimental bench system is debugged after being completed, and examines the functionality and applicability of equipment.
During the test, the parameter matching that different test hydraulic packages verify system by different meter device and sensor is chosen
Situation；Examine power drive system operating condition；Whether testing and control movement is accurate, and whether display system is normal；In addition it selects
Section hydraulic component is tested, such as: oil cylinder performance test, CA50 motor, MR700 low-speed big torque motor, multichannel
LS signal feedback for the valve group that commutates etc.；Test result is close with theoretical calculation, provides reliably for subsequent design of Hydraulic System
Test data.
1) test of pressure maintaining test and cylinder efficient pressure curve has been carried out respectively with oil cylinder to development machine:
The theoretical calculation of driving Oil cylinder is demonstrated according to test data, and improved in subsequent design calculating,
It corrects (such as Fig. 4,5).
2) EBZ220 type development machine is tested with Rexroth A11V0 Variable plunger pump performance:
The test for having carried out pressure, flow respectively to the variable pump pumps the test such as setting of rated pressure, is that development machine is excellent
Change the determination of pump variable displacement with constant power point in design, the reasonable selection of flow pressure provides test basis (such as Fig. 6).
Claims (5)
1. a kind of development machine multifunctional hydraulic testing stand, including main test module unit, it is characterised in that main test module list
Member includes hydraulic pump test module (a), hydraulic motor test module (b), hydraulic cylinder test module (c) and hydraulic valve test mould
Block (d),
The hydraulic pump test module drives a low pressure and mass flow oil pump to provide power source for tested pump by a motor, by
Proportional pressure control valve loads tested pump, measures tested pump pressure, flow, leakage by pressure tester and flow tester
Amount carries out overload protection to tested pump by the electromagnetic relief valve that two position four-way solenoid valves control, tests loading section by ratio
Overflow valve and flow tester are controled and monitored, and proportional pressure control valve can be loaded with continuous uniform, pass through flow sensor, pressure
Force snesor shows that data feedback controls proportional pressure control valve, then realizes the pressure change to tested pump, changes in flow rate and is tested
The test of the power, efficiency change project of pump；
The hydraulic motor test module drives a high pressure load pump to provide power source for tested motor by a motor, by
Proportional pressure control valve loads tested motor, measures tested motor pressure by pressure tester and flow tester, flow, lets out
Leakage quantity, meanwhile, using the low pressure and mass flow oil pump of hydraulic pump test module as power source, to bidirectional ram oil pump feed, two-way column
Plug pump is realized with tested motor to dragging, and can be tested the torque value of tested motor, i.e., be tested by two sets of pump groups, wherein a set of pump
Oil sources is provided for motor by bridge rectifier circuit, it is another set of for test load pump group, power source output hydraulic pressure oil, control section
The steering variation that motor is controlled by proportional reversing valve, the pressure change of motor, and then realization pair are controlled by proportional pressure control valve
The test of the pilot project of tested motor；
The hydraulic cylinder test module drives a sundstrand pump to provide power source, sundstrand pump for tested oil cylinder by a motor
It is made of low pressure gear pump and high-pressure plunger pump, measures the pressure of tested oil cylinder by pressure tester, when action test, high-pressure column
Plug pump unloading, low pressure gear pump provide low pressure and mass flow；When bulge test, high-pressure plunger pump load provides high-pressure low-flow,
Motor, which is effectively reduced, in entire test does reactive power；Operation stability test, low pressure seal performance test are by group
The low pressure gear pump closed in pump test；For high pressure i.e. 110% operating pressure experiments of sealing performance then by sundstrand pump
High-pressure plunger pump is tested；
The power source of the hydraulic valve test module and the high pressure load pump of hydraulic motor test module are shared, and control section passes through
Reversal valve controls the outbound course of hydraulic oil, and wherein flow is detected by traffic tester, and loading section is by proportional overflow
The pressure parameter of valve and pressure sensor real-time monitoring reversal valve, to realize the test to the pilot project of hydraulic valve.
2. development machine according to claim 1 multifunctional hydraulic testing stand, it is characterised in that the hydraulic pump test
Low pressure and mass flow oil pump (14) oil inlet of module (a) is connected to fuel tank through shut-off valve II (30.2), oil absorption filter II (9.2),
Low pressure and mass flow oil pump (14) oil outlet connects each survey through check valve III (16), 2/2-way electromagnetic pilot control valve I (17.1)
The oil outlet of the oil inlet of pump testing, each test pump is sequentially connected the oil inlet of high-pressure ball valve, check valve, the oil outlet of each check valve
Divide two-way, connect pressure tester, another way connection proportional pressure control valve all the way, pressure tester is connected to oil through electromagnetic relief valve
Case, proportional pressure control valve are connected to fuel tank through flow tester.
3. development machine according to claim 1 or 2 multifunctional hydraulic testing stand, it is characterised in that the hydraulic motor
The high pressure load pump of test module (b) is Variable plunger pump (31), and Variable plunger pump (31) oil outlet passes through check valve VIII (33)
The oil inlet of electromagnetic pilot reversal valve III (36.2) is connected, the unloading port of electromagnetic pilot reversal valve III (36.2) connects fuel tank, electricity
Two oil outlet of magnetic pilot reversing valve III (36.2) connects tested hydraulic motor through high-pressure ball valve, and tested hydraulic motor is also connected with flow
Tester and pressure tester；Meanwhile the low pressure and mass flow oil pump (14) in hydraulic pump test module (a) also provides power source,
Low pressure and mass flow oil pump (14) oil outlet connects 2/2-way electromagnetic pilot control valve II (17.2) and overflow valve III (15.1)
The oil outlet of oil inlet, overflow valve III (15.1) is directly connect with fuel tank；2/2-way electromagnetic pilot control valve II (17.2)
Oil outlet is separately connected pressure tester VIII (5.8) and check valve VII (23) oil inlet, and check valve VII (23) oil outlet is through high pressure
Filter (24) connect bridge rectifier (25) oil inlet, bridge rectifier (25) oil outlet connection bidirectional ram pump (28) into,
The oil inlet of oil outlet and overflow valve V (27.1), overflow valve VI (27.2) passes through overflow valve V (27.1) and overflow valve VI
(27.2) load to bidirectional ram pump (28) is realized, proportional pressure control valve (26) carries out overload protection to bridge rectifier (25), overflows
The oil outlet of stream valve V (27.1), overflow valve VI (27.2) and proportional pressure control valve (26) is directly connect with fuel tank.
4. development machine according to claim 3 multifunctional hydraulic testing stand, it is characterised in that the hydraulic cylinder is surveyed
Low pressure gear pump oil outlet connection check valve I (4) of die trial block (c) and overflow valve I (3), check valve I (4) oil outlet connection electricity
Magnetic pilot reversing valve I (6.1), electromagnetic pilot reversal valve I (6.1) oil return opening are connected to fuel tank, electromagnetic pilot reversal valve I (6.1) warp
Hydraulic control one-way valve (7.1) and high-pressure ball valve I (10.1), high-pressure ball valve II (10.2) connect tested oil cylinder (51)；Low pressure gear pump
It is also connected with another high-pressure plunger pump and forms sundstrand pump (2), another high-pressure plunger pump connects another set of circuit, and high-pressure plunger pump is fuel-displaced
Mouth connection check valve II (11) and overflow valve II (12), check valve II (11) connect electromagnetic pilot reversal valve II (36.1) oil inlet
Mouthful, electromagnetic pilot reversal valve II (36.1) oil return opening be connected to fuel tank, electromagnetic pilot reversal valve II (36.1) through hydraulic control lock (39) and
One-way throttle valve (8) connects tested oil cylinder.
5. development machine according to claim 4 multifunctional hydraulic testing stand, it is characterised in that the hydraulic valve test
The oil outlet of module (d) Variable plunger pump shared with the hydraulic motor test module (b) connect electromagnetism elder generation through check valve
Reversal valve IV (36.3) is led, the unloading port of electromagnetic pilot reversal valve IV (36.3) is connected to fuel tank, electromagnetic pilot through flow tester
The oil outlet of reversal valve IV (36.3) connects tested hydraulic valve bank (56), is tested hydraulic valve bank connecting moves and shows oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834647.9A CN105317785B (en) | 2014-11-27 | 2015-11-26 | Development machine multifunctional hydraulic testing stand |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410695636 | 2014-11-27 | ||
| CN2014106956362 | 2014-11-27 | ||
| CN201510834647.9A CN105317785B (en) | 2014-11-27 | 2015-11-26 | Development machine multifunctional hydraulic testing stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317785A CN105317785A (en) | 2016-02-10 |
| CN105317785B true CN105317785B (en) | 2019-02-15 |
Family
ID=55245872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510834647.9A Active CN105317785B (en) | 2014-11-27 | 2015-11-26 | Development machine multifunctional hydraulic testing stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105317785B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931001A (en) * | 2017-04-27 | 2017-07-07 | 江苏恒立液压科技有限公司 | Banked direction control valves experiment loading unit and its test method |
| CN108872546A (en) * | 2017-05-08 | 2018-11-23 | 沈阳航达机载设备有限公司 | A kind of quality detection device suitable for high pressure and low pressure oil liquid |
| CN108457932A (en) * | 2018-03-07 | 2018-08-28 | 江苏恒立液压科技有限公司 | Shield machine valve group tests system |
| CN109322876A (en) * | 2018-09-27 | 2019-02-12 | 中船重型装备有限公司 | A kind of shield machine hydraulic cylinder and valve group detection device |
| CN111677717B (en) * | 2020-05-19 | 2022-04-08 | 江苏理工学院 | Hydraulic system of hydraulic valve test bench |
| CN111795037B (en) * | 2020-07-14 | 2021-08-27 | 安徽江淮汽车集团股份有限公司 | Test system of gearbox hydraulic control device |
| CN112213958B (en) * | 2020-10-24 | 2022-12-02 | 济宁学院 | Electro-hydraulic control comprehensive simulation test platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19816843A1 (en) * | 1998-04-16 | 1999-10-21 | Gunter Riedel | Reversing drive for pulse test bed for dynamic pulse pressure testing of fluidic structural elements using capacitive energies |
| CN203053721U (en) * | 2012-12-24 | 2013-07-10 | 沈阳北方重矿机械有限公司 | Coal rock heading machine large-gradient testing stand |
| CN103867528A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Integral hydraulic test table |
| CN104074841A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3363346B2 (en) * | 1997-05-29 | 2003-01-08 | マルマテクニカ株式会社 | Energy recovery type hydraulic testing machine |
-
2015
- 2015-11-26 CN CN201510834647.9A patent/CN105317785B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19816843A1 (en) * | 1998-04-16 | 1999-10-21 | Gunter Riedel | Reversing drive for pulse test bed for dynamic pulse pressure testing of fluidic structural elements using capacitive energies |
| CN203053721U (en) * | 2012-12-24 | 2013-07-10 | 沈阳北方重矿机械有限公司 | Coal rock heading machine large-gradient testing stand |
| CN103867528A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Integral hydraulic test table |
| CN104074841A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317785A (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105317785B (en) | Development machine multifunctional hydraulic testing stand | |
| CN107061415B (en) | A kind of multifunctional solution compression testing device | |
| CN101871478B (en) | Loading device of hydraulic motor test board | |
| CN103174412B (en) | A kind of coalbed methane reservoir layering is with adopting HTHP mining dynamic evaluation instrument | |
| CN103471829B (en) | A kind of test stand of multi-way valve of hydraulic excavator | |
| CN107023536A (en) | Engineering machinery hydraulic cylinder dynamic performance integrated test platform | |
| CN109058234B (en) | Performance test system and detection method for hydraulic system of electric proportional control valve compensation excavator | |
| CN103994126A (en) | Test method for open type seawater hydraulic system in deep sea simulation environment | |
| CN103234718B (en) | Performance testing system for air brake valve of tractor trailer | |
| CN104454791B (en) | Parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves | |
| CN104675804A (en) | Comprehensive hydraulic cylinder performance testing system | |
| CN103352900A (en) | Heavy-duty mining dump vehicle hydraulic oil cylinder/hydraulic valve test table | |
| CN206830573U (en) | A kind of multifunctional solution compression testing device | |
| CN101852696A (en) | Bidirectional pressure inlet hydraulic device | |
| CN105020187A (en) | Experimental table propelling hydraulic system of hard rock boring machine | |
| CN103775436B (en) | The parallel hydraulic pump of modular and the energy-conservation reliability test of hydraulic motor multimachine | |
| CN203717315U (en) | Mechanical compensation-type hydraulic pump power recovery testboard | |
| CN115823064B (en) | Internal curve hydraulic motor performance test system under wide rotating speed range | |
| CN103982489B (en) | The modular control apparatus tested for hydraulic pump and hydraulic motor | |
| CN106438581A (en) | Hydraulic motor detection experimental system | |
| CN202149102U (en) | Novel test bed device of hydraulic valve | |
| CN201714746U (en) | Loading device of hydraulic motor test bench | |
| CN102213635B (en) | Testing system for main valve leakage of hydraulic excavator | |
| CN213451126U (en) | Hydraulic comprehensive test platform | |
| CN210799577U (en) | Hydraulic valve set debugging test bed for heading machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 030032 No.1, electronic street, Shanxi demonstration area, Taiyuan City, Shanxi Province Co-patentee after: SHANXI TIANDI COAL MINING MACHINERY Co.,Ltd. Patentee after: TAIYUAN INSTITUTE OF CHINA COAL TECHNOLOGY AND ENGINEERING Group Address before: 030006 Shanxi Province, Taiyuan city and State Road No. 108 Co-patentee before: SHANXI TIANDI COAL MINING MACHINERY Co.,Ltd. Patentee before: TAIYUAN INSTITUTE OF CHINA COAL TECHNOLOGY AND ENGINEERING Group |