CN102692318A - Multi-way valve test bench - Google Patents
Multi-way valve test bench Download PDFInfo
- Publication number
- CN102692318A CN102692318A CN2012101469648A CN201210146964A CN102692318A CN 102692318 A CN102692318 A CN 102692318A CN 2012101469648 A CN2012101469648 A CN 2012101469648A CN 201210146964 A CN201210146964 A CN 201210146964A CN 102692318 A CN102692318 A CN 102692318A
- Authority
- CN
- China
- Prior art keywords
- oil
- banked direction
- control valves
- test
- direction control
- 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.)
- Granted
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to the technical field of engineering machinery, and discloses a multi-way valve test bench, wherein the multi-way valve test bench comprises: a hydraulic bench that includes an oil supply module providing oil for a multi-way value test and a test bench for testing the multi-way valve; and an electrically controlled system that includes a power supply module providing power for testing the multi-way valve and a control module for controlling the multi-way valve test. With the multi-way valve test bench, a problem that tests cannot be conducted before loading of the multi-way valve in the present engineering machinery manufacturing is effectively solved, and a test bench for testing the multi-way valve is provided.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of banked direction control valves testing table.
Background technology
As the banked direction control valves of the critical component of construction machinery hydraulic system, not only to satisfy many actions operations of topworks, the fuel feeding control of many pumps interflow system; Also to boost productivity; Reduce energy loss as far as possible, require in the loop do not have executive component work constantly the discharge capacity of main pump drop to minimum automatically, when executive component is worked; If the spool standard-sized sheet, the discharge capacity of main pump increases automatically.So banked direction control valves is vital in practical applications, does a set of equipment banked direction control valves before the entrucking and make an experiment and set up that respectively to join parameter be necessary.
Therefore, how to make a kind of testing table that can make an experiment to banked direction control valves, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the present invention is intended to propose the banked direction control valves testing table, lacks a kind of problem that can make an experiment and set up the testing table that respectively joins parameter banked direction control valves in the existing engineering machinery manufacturing to solve.
On the one hand, the invention provides a kind of banked direction control valves testing table, comprising:
The hydraulic pressure stand, it is included as the fuel feeding assembly of banked direction control valves test fuel feeding and the test-bed that is used to test banked direction control valves;
Electric-control system, its Control Component that is included as the power supply module of test banked direction control valves power supply and is used to control the banked direction control valves test wherein, said fuel feeding assembly comprises:
Main supply reservoir, internal memory contains fluid;
Main oil feed pump group, the oil inlet pipe that its oil inlet end connects is inserted in the said fluid, and oil outlet end connects the main fuel feed pump that is used to test said banked direction control valves oil-in;
The working connection surplus valve is installed on the said main fuel feed pump;
Auxiliary oil circuit pump group, the oil inlet pipe that its oil inlet end connects is inserted in the fluid of said main supply reservoir, and oil outlet end is connected with the auxiliary feed-oil pipe that is used to test said banked direction control valves guide hydraulic fluid port;
Cooling device is used for the fluid in the said main supply reservoir is cooled off.
Further, said test-bed comprises:
The testing table fuel tank is used to collect the fluid that the leakage mouth L of tested said banked direction control valves reveals;
Loading oil circuit is used for the loading hydraulic fluid port of said banked direction control valves is tested;
Guide's oil circuit, its oil inlet end is communicated with said auxiliary feed-oil pipe, and oil outlet end is provided with the oil pipe that is respectively applied for guide's hydraulic fluid port test of said banked direction control valves;
LS control oil channel, an end are connected with the oil pipe that is used to test said banked direction control valves LS hydraulic fluid port, and the other end is connected said main oil feed pump group;
Leak oil circuit, an end is connected with and is used to test the oil pipe that said banked direction control valves is revealed mouth, and the other end is connected in the said testing table fuel tank;
The backflow oil circuit, an end is connected with the oil pipe that is used to test said banked direction control valves refluxing opening, and the other end is connected in the said main supply reservoir through the oil return oil filter;
The oil-feed oil circuit, an end is connected with the oil pipe that is used to test said banked direction control valves oil-in, and the other end connects said main fuel feed pump;
Pressure test device is provided with first pressure transducer that is used to test said banked direction control valves pressure test mouth.
Further, the said working connection surplus valve plug-in mounting surplus valve that is the on-load safety valve.
Further, said loading oil circuit comprises:
Proportional pressure control valve, it is connected to the loading hydraulic fluid port of the said banked direction control valves of test through the uniflux control module.
Further, said uniflux is controlled two plug-in mounting retaining valves that unit is parallel connection.
Further, said guide's oil circuit comprises:
Solenoid directional control valve, a plurality of reversing oil circuit ends of solenoid directional control valve control switching-over are connected with the oil pipe that is used to test said banked direction control valves guide hydraulic fluid port respectively; Wherein,
Said solenoid directional control valve oil inlet end is connected with said auxiliary oil circuit pump group through oil pipe.
Further, said solenoid directional control valve oil inlet end is provided with proportional pressure-reducing valve with the oil pipe that said auxiliary oil circuit pump group is connected;
Said proportional pressure-reducing valve is provided with second pressure transducer.
Further, said solenoid directional control valve oil inlet end is provided with electromagnetic relief valve with the oil pipe that said auxiliary oil circuit pump group is connected.
Further, said cooling device comprises:
The ebullator group, its water inlet pipe is connected in the cooling water tank;
The water-cooled circulator is arranged in the said main supply reservoir, and its water inlet pipe is connected on the water side of said ebullator group, and its rising pipe is connected in the said cooling water tank;
Temperature controller is arranged on and is used to measure said main supply reservoir inner fluid temperature in the said main supply reservoir, when oil liquid temperature surpasses predetermined temperature, starts said ebullator group.
Further, said fuel feeding assembly also comprises:
Reclaim the pump group, the oil pipe that its oil inlet end connects is inserted in said the testing in the table oil case fluid of examination, and the oil pipe of oil outlet end is connected in the said main supply reservoir;
Fluid level controller is arranged in the said testing table fuel tank, is used to detect said testing table fuel tank fluid height, after said testing table fuel tank fluid height surpasses predetermined altitude, starts said recovery pump group.
Further, said test-bed also comprises:
The oil-feed oil filter that is provided with on the said oil-feed oil circuit, said oil-feed oil filter oil outlet end connects in line check valve and first flow meter, also is provided with the 3rd pressure transducer on the said oil-feed oil circuit;
The 4th pressure transducer that is provided with on the said proportional pressure control valve and second flowmeter;
The 5th pressure transducer that is provided with on the said LS control oil channel;
The 3rd flowmeter that is provided with on the said backflow oil circuit.
Further, said power supply module comprises:
Power cabinet; Connect power supply in the power cabinet; Said power supply connects the isolating switch of a plurality of parallel connections, and the isolating switch of a plurality of parallel connections connects coupling separately respectively, and each coupling is respectively applied for and is electrically connected said main oil feed pump group, said auxiliary oil circuit pump group, said cooling device and said reflux pump group;
The startup cabinet that is electrically connected with said power cabinet, in be provided with the reduced voltage starter that is used to supply said main oil feed pump group to open;
Said Control Component comprises:
Control desk: comprise power supply and the control device that is connected with power supply;
The industry control rack that is electrically connected with said control desk comprises display and server.
Compared with prior art, beneficial effect of the present invention is:
The present invention provides a kind of banked direction control valves testing table, comprising: the hydraulic pressure stand, and it is included as the fuel feeding assembly of banked direction control valves test fuel feeding and the test-bed that is used to test banked direction control valves; Electric-control system, it is included as the power supply module of test banked direction control valves power supply and the Control Component that is used to control the banked direction control valves test.Solved in the existing engineering machinery manufacturing problem that can not before the banked direction control valves entrucking, make an experiment effectively, a kind of testing table that can make an experiment to banked direction control valves is provided.
Description of drawings
The structured flowchart of the banked direction control valves testing table that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the hydraulic schematic diagram of banked direction control valves testing table in the embodiment of the invention;
Fig. 3 is the structural representation of the hydraulic pressure stand of banked direction control valves testing table in the embodiment of the invention;
Fig. 4 is the structured flowchart of the power supply module of banked direction control valves control desk in the embodiment of the invention;
Fig. 5 is the structured flowchart of the Control Component of banked direction control valves control desk in the embodiment of the invention;
Fig. 6 is the FB(flow block) of banked direction control valves bench run method in the embodiment of the invention.
Embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.Should be pointed out that description and the description order to concrete structure only is the explanation to specific embodiment in this part, should not be regarded as that protection scope of the present invention is had any restriction.
Please refer to Fig. 1, a kind of banked direction control valves testing table comprises: the hydraulic pressure stand, and it is included as the fuel feeding assembly of banked direction control valves test fuel feeding and the test-bed that is used to test banked direction control valves; Electric-control system, it is included as the power supply module of test banked direction control valves power supply and the Control Component that is used to control the banked direction control valves test.
Wherein, The hydraulic pressure stand can be the interface stand of various testing hydraulic system; The fuel feeding assembly is a banked direction control valves test fuel feeding through the interface of hydraulic pressure stand; Electric-control system can be the power control of control test in the various hydraulic tests, and Control Component can be that hand control switch also can be an intelligence control system.
When banked direction control valves is tested; Earlier banked direction control valves to be tested is placed on the test-bed; Through the fuel feeding assembly banked direction control valves is carried out fuel feeding, through Control Component control fuel feeding assembly and test-bed banked direction control valves is tested, and the electricity consumption device of fuel feeding assembly, test-bed and Control Component is supplied power through power supply module; Duty in the time of can simulating the banked direction control valves real work on the whole, and can accurately make an experiment to banked direction control valves and set up and respectively join parameter.Guarantee that banked direction control valves can satisfy engineering demand when being installed to mechanically.
Wherein the hydraulic schematic diagram on the hydraulic pressure stand is as shown in Figure 2; This figure provides the schematic diagram that banked direction control valves two is made an experiment simultaneously; Clear for the ease of explaining, elder generation's one joint-trial of banked direction control valves from figure is tested and is explained, and then two and the test that joins of explanation banked direction control valves more.
Wherein as shown in Figures 2 and 3, the fuel feeding assembly comprises: main supply reservoir 50, stored fluid; Main oil feed pump group 2, the oil inlet pipe that its oil inlet end connects is inserted in the fluid, and oil outlet end connects the main fuel feed pump that is used to test the banked direction control valves oil-in; Working connection surplus valve 7 is installed on the main fuel feed pump, and the working connection surplus valve also comprises flowline, and flowline is connected in the main supply reservoir 50; Auxiliary oil circuit pump group, the oil inlet pipe that its oil inlet end connects is inserted in the fluid of main supply reservoir 50, and oil outlet end is connected with the auxiliary feed-oil pipe of test banked direction control valves guide hydraulic fluid port; Cooling device cools off the fluid in the main supply reservoir 50.
Also be provided with stop valve 1 and buffering connector 48 on the oil inlet pipe that the oil inlet end of main supply reservoir 50 connects, so that, also be provided with the thermometer 41 and bath filter 37 of measuring oil liquid temperature in the main supply reservoir 50 to the control and the buffer action of main oil feeding line; Main fuel feeding oil pump group 2 comprises working barrel and work drive motor; Auxiliary oil circuit pump group comprises service pump 9 and back work motor 10; Cooling device is used for main fuel tank fluid is cooled off.
Wherein, as shown in Figures 2 and 3, cooling device comprises: ebullator group, its water inlet pipe are connected in the cooling water tank 51; Water-cooled circulator 43 is arranged in the main supply reservoir 50, and its water inlet pipe is connected on the water side of ebullator group, and its rising pipe connects a filtrator 42, and is connected in the cooling water tank 51 through filtrator 42; Temperature controller is arranged on and is used to measure main supply reservoir inner fluid temperature in the main supply reservoir, when oil liquid temperature surpasses predetermined temperature, starts the ebullator group.
The ebullator group comprises ebullator 44 and circulation motor 45, and the water inlet pipe that the water inlet end of ebullator connects is provided with buffer couplings 46 and stop valve 47; The ebullator group connects water-cooled circulator 43 and filtrator 42; Can keep fluid in the fuel tank in predetermined temperature range through cooling device, improve the accuracy of test, reduce fluid and reveal.
As shown in Figures 2 and 3, test-bed comprises: testing table fuel tank 49, collect the fluid of the leakage mouth L leakage of test banked direction control valves; Loading oil circuit is used for loading hydraulic fluid port A1, the B1 of banked direction control valves are tested; Guide's oil circuit, guide's oil circuit oil inlet end is communicated with the auxiliary feed-oil pipe, and oil outlet end is provided with the guide's hydraulic fluid port a1 that is respectively applied for banked direction control valves, the oil pipe of b1 test; LS (feedback valve) control oil channel, an end are connected with the oil pipe of LS (feedback valve) the hydraulic fluid port test that is used for banked direction control valves, and the other end connects main oil feed pump group 2; Leak oil circuit, an end is connected with and is used to test the oil pipe that banked direction control valves is revealed mouthful L, and the other end is connected in the testing table fuel tank 49; The backflow oil circuit, an end is connected with the oil pipe that is used to test banked direction control valves refluxing opening T, and the other end is connected in the main supply reservoir 50 through oil return oil filter 35; The oil-feed oil circuit, an end is connected with the oil pipe that is used to test the banked direction control valves oil inlet P, and the other end is connected main oil feed pump group 2; Pressure test device is provided with first pressure transducer 32 that is used to test banked direction control valves pressure test mouth Z.
Through loading oil circuit, guide's oil circuit, LS control oil channel being set on test-bed, leaking oil circuit, backflow oil circuit, oil-feed oil circuit and pressure test device; Can be respectively loading hydraulic fluid port A1, B1, guide's hydraulic fluid port a1, b1, LS control port, leakage hole L, oil return inlet T, oil inlet P and the pressure test mouth Z of banked direction control valves be measured; To realize comprehensive measurement to each test port of banked direction control valves; Improve whole measuring stability; 35 pairs of oil return oil filters reclaim fluid and filter, so that the fluid of after-purification is in main supply reservoir 50.
Wherein, as shown in Figure 2, testing table fuel tank 49 is collected banked direction control valves and is revealed the fluid that mouthful L reveals, and is provided with a stop valve 38 outside the testing table fuel tank 49, is used to empty the fluid of changing in the testing table fuel tank 49; In addition; Be provided with between testing table fuel tank 49 and the main supply reservoir 50 and reclaim the pump group; The oil pipe that reclaims the connection of pump group oil inlet end is inserted in testing table fuel tank 49 fluid, and oil outlet end is connected with the oil pipe to main supply reservoir 50 fuel feeding, and testing table fuel tank 49 also is provided with fluid level controller 33; Be used to detect testing table fuel tank 49 fluid height, after testing table fuel tank 49 fluid height surpass predetermined altitude, start recovery pump group testing table fuel tank 49 inner fluids are extracted in the main supply reservoir 50; Wherein reclaiming the pump group comprises recovery pump 39 and reclaims motor 40.
Collect the fluid that banked direction control valves L mouth (leakage hole) is revealed through testing table fuel tank 49; Through reclaiming the pump group fluid in the testing table fuel tank 49 is transferred in the main supply reservoir 50 then; Supply main supply reservoir 50 to continue to use, practice thrift cost, be convenient to fluid and recycle again.Be provided with filtration unit (not providing among the figure) in the testing table fuel tank; Because the fluid that leakage hole L reveals is contaminated easily; So need the fluid that leakage hole L reveals be recovered in the testing table fuel tank 49; In the testing table mailbox, filter through filtration unit (not providing among the figure); Be recovered in the main supply reservoir through reclaiming the pump group then, also can connect second filtration unit (not providing among the figure) again, to increase filter effect fluid at the oil inlet end that reclaims the pump group.
Wherein, as shown in Figure 2, loading oil circuit comprises: proportional pressure control valve 21 is connected to every loading hydraulic fluid port A1, the B1 of test banked direction control valves through two uniflux control modules.Wherein, the uniflux control module that loads hydraulic fluid port A1 connection is two plug-in mounting retaining valves 18,19 of parallel connection, and the uniflux control module that loads hydraulic fluid port B1 connection is two plug-in mounting retaining valves 22,23 of parallel connection.Plug-in mounting retaining valve 18 is parallelly connected by unidirectional control mode in the opposite direction with plug-in mounting retaining valve 19, two links that plug-in mounting retaining valve 18 after the parallel connection and plug-in mounting retaining valve 19 1 ends are connected in proportional pressure control valve respectively; The other end is connected and loads hydraulic fluid port A1.As shown in Figure 2, the connected mode of the connected mode of plug-in mounting retaining valve 22,23 and plug-in mounting retaining valve 18,19 is similar, repeats no more at this.Through realizing uniflux at A1, B1 mouth parallel connection plug-in mounting retaining valve 18,19/22,23, the proportional pressure control valve 21 of connecting has again been realized being tried the loading of banked direction control valves, the state in the time of can accurately testing the banked direction control valves real work; Plug-in mounting retaining valve 18,19/22,23 is more suitable for the oil circuit control in big flow.
In addition, also be provided with second flowmeter 20 and the 4th pressure transducer 30 on the proportional pressure control valve 21, be convenient to the flow and the pressure of loading oil circuit are carried out survey record, be convenient to test and setting banked direction control valves.
Wherein, as shown in Figure 2, guide's oil circuit comprises: solenoid directional control valve 14, and two reversing oil circuit ends of solenoid directional control valve 14 control switching-overs are connected with respectively and are used to test banked direction control valves guide hydraulic fluid port a1, the oil pipe of b1; Solenoid directional control valve 14 oil inlet ends are connected with auxiliary oil circuit pump group through oil pipe.Switching-over through solenoid directional control valve 14 control guide oil circuits.
Solenoid directional control valve 14 oil inlet ends are provided with proportional pressure-reducing valve 12 and oil filter 11 with the oil pipe that auxiliary oil circuit pump group 9,10 is connected; Proportional pressure-reducing valve 12 is provided with second pressure transducer 13.The decompression of switching-over and the proportional pressure-reducing valve 12 of guide's oil circuit through solenoid directional control valve 14 is to guide's hydraulic fluid port a1, and b1 tests, and accurately tests out the test result of guide's hydraulic fluid port under different oil pressure through second pressure transducer 13 simultaneously.
As shown in Figure 2, solenoid directional control valve 14 is provided with electromagnetic relief valve 8 with the oil pipe that auxiliary oil circuit pump group is connected.The oil pressure of 8 pairs of auxiliary oil pumps of electromagnetic relief valve plays certain pressure regulation protective effect, surpasses predetermined oil and compresses into capable overflow protection.
As shown in Figure 2, the LS control oil channel, an end is connected with the oil pipe that is used to test banked direction control valves LS hydraulic fluid port, and the other end is connected on the main oil feed pump group 2; The 5th pressure transducer 36 that is provided with on the LS control oil channel; Show LS hydraulic fluid port force value.
Leak oil circuit, an end is connected with and is used to test the oil pipe that banked direction control valves is revealed mouthful L, and the other end is connected in the testing table fuel tank 49; The fluid of being convenient to banked direction control valves is revealed is recycled.
The backflow oil circuit, an end is connected with the oil pipe that is used to test banked direction control valves refluxing opening T, and the other end is connected in the main supply reservoir 50 through oil return oil filter 35; The 3rd flowmeter 34 that is provided with on the backflow oil circuit.Be convenient to write down return flow.
The oil-feed oil circuit, an end is connected with the oil pipe that is used to test the banked direction control valves oil inlet P, and the other end is connected main oil feed pump group 2; The oil-feed oil filter 3 that is provided with on the oil-feed oil circuit, the oil pipe that oil-feed oil filter oil outlet end connects is provided with in line check valve 4 and first flow meter 5, also is provided with the 3rd pressure transducer 6 on the oil-feed oil circuit; Can write down the oil inlet quantity of banked direction control valves and the oil pressure of oil-feed.Pressure test device is provided with first pressure transducer 32 of the pressure that is used to test banked direction control valves pressure test mouth Z.
As shown in Figure 2, working connection surplus valve 7 is the plug-in mounting surplus valve of on-load safety valve.The plug-in mounting surplus valve is more suitable for the protection of big flow, and the load safety valve can play the effect of second protection.
More than being the test specification that one of banked direction control valves test bed testing banked direction control valves among Fig. 2 is loaded hydraulic fluid port and guide's hydraulic fluid port, is the test specification that two of banked direction control valves is loaded hydraulic fluid port and guide's hydraulic fluid port below.
The present invention only need increase by one group of corresponding loading oil circuit again to two or many making an experiment simultaneously when measuring of banked direction control valves on every loading hydraulic fluid port to be measured; On every guide's hydraulic fluid port to be measured, increasing by one group of corresponding guide's oil circuit again gets final product.So it is a plurality of that guide's oil circuit of the present invention has, so that banked direction control valves is joined guide's hydraulic fluid port experimental test simultaneously more; Loading oil circuit also has a plurality of, can test simultaneously many loading hydraulic fluid ports of banked direction control valves simultaneously.Improve the reliability and the accuracy of test.
Provided among Fig. 2 and measured two hydraulic schematic diagram simultaneously; Wherein as shown in Figure 2; Near loading oil circuit, increase again one to second load the hydraulic fluid port test loading oil circuit, the loading oil circuit that increases newly comprises: proportional pressure control valve 27 is connected to second loading hydraulic fluid port A2, B2 of test banked direction control valves through two uniflux control modules.Wherein, the uniflux control module that loads hydraulic fluid port A2 connection is two plug-in mounting retaining valves 24,25 of parallel connection, and the uniflux control module that loads hydraulic fluid port B2 connection is two plug-in mounting retaining valves 28,29 of parallel connection.Plug-in mounting retaining valve 24 is parallelly connected by unidirectional control mode in the opposite direction with plug-in mounting retaining valve 25, two links that plug-in mounting retaining valve 24 after the parallel connection and plug-in mounting retaining valve 25 1 ends are connected in proportional pressure control valve respectively; The other end is connected and loads hydraulic fluid port A2.As shown in Figure 2, the connected mode of the connected mode of plug-in mounting retaining valve 28,29 and plug-in mounting retaining valve 24,25 is similar, repeats no more at this.Realize uniflux through A2, B2 mouth parallel connection plug-in mounting retaining valve 24,25/28,29, the proportional pressure control valve 27 of connecting has again been realized being tried the loading of banked direction control valves.In addition, also be provided with flowmeter 26 and pressure transducer 31 on the proportional pressure control valve 27, be convenient to the flow and the pressure of second loading oil circuit are carried out survey record, be convenient to test and setting banked direction control valves.
As shown in Figure 2; Near loading oil circuit again the parallel connection one to second guide's hydraulic fluid port a2; Guide's oil circuit of b2 test; The guide's oil circuit that increases newly comprises: solenoid directional control valve 17, and two reversing oil circuit ends of solenoid directional control valve 17 control switching-overs are connected with respectively and are used to test banked direction control valves guide hydraulic fluid port a2, the oil pipe of b2; Solenoid directional control valve 17 oil inlet ends are connected with auxiliary oil circuit pump group through oil pipe.Solenoid directional control valve 17 oil inlet ends are provided with proportional pressure-reducing valve 15 with the oil pipe that auxiliary oil circuit pump group is connected; Proportional pressure-reducing valve 15 is provided with a pressure transducer 16.Guide's oil circuit can accurately test out guide's hydraulic fluid port a2 through pressure transducer 16, the test result of b2 under different oil pressure simultaneously through the switching-over of solenoid directional control valve 17 and the decompression test of proportional pressure-reducing valve 15.
In the concrete application process of the present invention the banked direction control valves performance test is comprised:
1, LS pressure is set
Test method: regulate the LS surplus valve and be worth to certain, make banked direction control valves switching-over (automatically controlled, hydraulic control), the variation of measuring pressure sensor 36.
Flow process:
1) start main oil feed pump group 2, working connection surplus valve 7 gets electric, and the load safety valve of regulating the working connection surplus valve is to 350bar; The pressure testing point connects tensimeter and transfers.
2) tried to join switching-over, joined for hydraulic control: start service pump 9, electromagnetic relief valve 8; Proportional pressure-reducing valve 12, proportional pressure-reducing valve 15 signals are given to＞4Mpa, transfer electromagnetic relief valve 8, make second pressure transducer 13, pressure transducer 16 actual values=5Mpa; Reduce proportional pressure-reducing valve 12, proportional pressure-reducing valve 15 signals; Be worth between the 23-40bar, it is electric that solenoid directional control valve 14, solenoid directional control valve 17 are got, and tried to join switching-over; To automatically controlled: the amplifier with this couplet signals, and makes this couplet switching-over;
3) loading electricity liquid ratio relief valve 21, proportional pressure control valve 27 transfer to pressure transducer 30, pressure transducer 31 to 200bar.
4) manual adjustments LS surplus valve from low to high, the numerical value change of record pressure transducer 36.
5) change other direction, do same test again.
2, pilot pressure test
Test method: regulate proportional pressure-reducing valve 12, proportional pressure-reducing valve 15 electric signal, write down second pressure transducer 13, pressure transducer 16 values, record again after the switching-over.
Flow process:
The input signal (being equivalent to force value) of proportional pressure-reducing valve 12, proportional pressure-reducing valve 15 is transferred to the force value corresponding to 50bar;
The load safety valve of transferring electromagnetic relief valve 8 this moment all shows 5Mpa up to second pressure transducer 13, pressure transducer 16;
When being joined switching-over by examination, the force value of downward modulation proportional pressure-reducing valve 12, proportional pressure-reducing valve 15 progressively arrive 23bar again to 40bar, observes the indicating value variation at second pressure transducer 13, pressure transducer 16 places.
3, load variations is to the influence test of (simply connected) flow
Test method: main oil feed pump group 2 pressure are transferred to ratings; Joined switching-over by examination; And make and joined spool by examination and keep a certain opening amount; Proportional pressure control valve 21, proportional pressure control valve 27 are regulated on-load pressure continuously from low to high, and record first flow meter 5, second flowmeter 20, flowmeter 26 be flow and the 3rd pressure transducer 6, the 4th pressure transducer 30, pressure transducer 31 force value everywhere everywhere.Be load-flow curve figure.Joined by examination and to change another to, same test.
Flow process:
1) main oil feed pump group 2 keeps 350bar, or the load safety valve of manually transferring working connection surplus valve 7 is to working pressure;
2) try to join and commutated to a certain direction, joined, make solenoid directional control valve 14, solenoid directional control valve 17 left sides (right side) hold electromagnet respectively for hydraulic control; To automatically controlled: the amplifier with this couplet signals, and makes this couplet switching-over, keeps a certain opening amount;
3) transfer continuously proportional pressure control valve 21, proportional pressure control valve 27, proportional amplifier; On-load pressure is changed, record first flow meter 5, second flowmeter 20, flowmeter 26 place's measurement of discharges and the 3rd pressure transducer 6, the 4th pressure transducer 30, pressure transducer 31 place's pressure.
4) tried to join switching-over in the other direction, repeated above-mentioned test and record.Be load-flow curve figure.
4, load variations is tested two synchronous influences
A, electro-hydraulic control:
Test method: main oil feed pump group 2 is transferred to rated pressure; The proportional pressure-reducing valve output pressure of service pump 9 two-way is consistent; Changed to same direction by the examination couplet; Change the proportional amplifier input signal of proportional pressure control valve 21, proportional pressure control valve 27, the value of record first flow meter 5, second flowmeter 20, flowmeter 26.Joined with changing other direction by examination, test with method.
Flow process:
1) make main oil feed pump group 2 keep set pressure 350bar (or transferring the load safety valve of working connection surplus valve 7 to make pump) to working pressure;
2) input signal is given proportional pressure-reducing valve 12, proportional pressure-reducing valve 15, and making pilot pressure is 30bar (or 23---the value between the 40bar);
3) to proportional pressure control valve 21, proportional pressure control valve 27 input identical load signal (intermediate value), the flow value at opening entry second flowmeter 20, flowmeter 26, first flow meter 5 places;
4) change proportional pressure control valve 21, proportional pressure control valve 27 input signals respectively, one changes to maximal value, and another couplet changes to minimum value, writes down second flowmeter 20, flowmeter 26, first flow meter 5 place's flow values.
5) solenoid directional control valve 14, solenoid directional control valve 17 respectively electric, make by examination to join switching-over simultaneously, test again with method.
B, proportional control:
Test method:
Two are tried to join input in the same way with the magnitude proportion amplifier signal, and proportional pressure control valve 21, the same proportional amplifier signal (pressure unanimity) of proportional pressure control valve 27 input earlier write down two flow; Then that load signal is big to change respectively, the direction that diminishes changes, and writes down two flow; Joined the input signal switching-over by examination, test with method.
Flow process:
1) make main oil feed pump group 2 keep 350bar pressure (or transferring the load safety valve of working connection surplus valve 7 to make pump arrive working pressure);
2) to two same in the same way amplitude signals of proportional amplifier input that joined by examination in the controller, make to be tried to join and change to same direction, opening is identical;
3) value signal between the input wherein of the proportional amplifier of proportional pressure control valve 21, proportional pressure control valve 27, the value of opening entry second flowmeter 20, flowmeter 26, first flow meter 5;
4) signal of proportional pressure control valve 21, proportional pressure control valve 27 respectively to big, to little variation, return intermediate value, the value of record first flow meter 5, second flowmeter 20, flowmeter 26.
5) to the same in the same way amplitude signal that is joined two proportional amplifier input other directions in the controller by examination, make to be tried to join and change to other direction, try again with method.
In addition; As shown in Figure 4, the power supply module among the present invention comprises: connect power supply in the power cabinet, power cabinet; Power supply connects the isolating switch of a plurality of parallel connections; The isolating switch of a plurality of parallel connections connects coupling separately respectively, and (not providing among the figure), a plurality of couplings that a plurality of isolating switchs are corresponding are respectively applied for and are electrically connected main oil feed pump group, auxiliary oil circuit pump group, cooling device, reflux pump group; The startup cabinet that is electrically connected with power cabinet, in be provided with and be used for the reduced voltage starter that main oil feed pump group is opened.
The power supply module of testing table of the present invention can be selected power supply module commonly used in the hydraulic system test.
As shown in Figure 5, Control Component comprises: control desk: comprise power supply and the control device that is connected with power supply; The industry control rack that is electrically connected with control desk comprises display and server.Control desk can be integrated into the control section on the test-bed on the device, is convenient to centralized operation, and display can be used to show test situation, and server can be realized intellectualized operation.
The embodiment of the invention also provides a kind of method of banked direction control valves bench run, and is as shown in Figure 6, and its method flow diagram comprises:
Through Control Component control fuel feeding assembly the banked direction control valves on test-bed is tested; Through power supply module is the fuel feeding assembly power supply.
Wherein, through Control Component control fuel feeding assembly the banked direction control valves on test-bed is tested; Comprise: the usage ratio surplus valve connects the uniflux control module respectively the every loading oil circuit of banked direction control valves is loaded test; The usage ratio reduction valve connects solenoid directional control valve the every guide's hydraulic fluid port of banked direction control valves is carried out guide's test.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a banked direction control valves testing table is characterized in that, comprising:
The hydraulic pressure stand, it is included as the fuel feeding assembly of banked direction control valves test fuel feeding and the test-bed that is used to test banked direction control valves;
Electric-control system, it is included as the power supply module of test banked direction control valves power supply and the Control Component that is used to control the banked direction control valves test; Wherein
Said fuel feeding assembly comprises:
Main supply reservoir (50), internal memory contains fluid;
Main oil feed pump group (2), the oil inlet pipe that its oil inlet end connects is inserted in the said fluid, and oil outlet end connects the main fuel feed pump that is used to test said banked direction control valves oil-in;
Working connection surplus valve (7) is installed on the said main fuel feed pump;
Auxiliary oil circuit pump group, the oil inlet pipe that its oil inlet end connects is inserted in the fluid of said main supply reservoir (50), and oil outlet end is connected with the auxiliary feed-oil pipe that is used to test said banked direction control valves guide hydraulic fluid port;
Cooling device is used for the fluid in the said main supply reservoir (50) is cooled off.
2. banked direction control valves testing table according to claim 1 is characterized in that said test-bed comprises:
Testing table fuel tank (49) is used to collect the fluid that the leakage mouth L of tested said banked direction control valves reveals;
Loading oil circuit is used for the loading hydraulic fluid port of said banked direction control valves is tested;
Guide's oil circuit, its oil inlet end is communicated with said auxiliary feed-oil pipe, and oil outlet end is provided with the oil pipe that is respectively applied for guide's hydraulic fluid port test of said banked direction control valves;
LS control oil channel, an end are connected with the oil pipe that is used to test said banked direction control valves LS hydraulic fluid port, and the other end is connected said main oil feed pump group (2);
Leak oil circuit, an end is connected with and is used to test the oil pipe that said banked direction control valves is revealed mouth, and the other end is connected in the said testing table fuel tank (49);
The backflow oil circuit, an end is connected with the oil pipe that is used to test said banked direction control valves refluxing opening, and the other end is connected in the said main supply reservoir (50) through oil return oil filter (35);
The oil-feed oil circuit, an end is connected with the oil pipe that is used to test said banked direction control valves oil-in, and the other end connects said main fuel feed pump;
Pressure test device is provided with first pressure transducer (32) that is used to test said banked direction control valves pressure test mouth.
3. like the arbitrary said banked direction control valves testing table of claim 1-2, it is characterized in that said working connection surplus valve (7) is the plug-in mounting surplus valve of on-load safety valve.
4. like the said banked direction control valves testing table of claim 2, it is characterized in that said loading oil circuit comprises:
Proportional pressure control valve (21), it is connected to the loading hydraulic fluid port of the said banked direction control valves of test through the uniflux control module.
5. like the said banked direction control valves testing table of claim 4, it is characterized in that said uniflux is controlled two plug-in mounting retaining valves that unit is parallel connection.
6. like the said banked direction control valves testing table of claim 2, it is characterized in that said guide's oil circuit comprises:
Solenoid directional control valve (14), a plurality of reversing oil circuit ends of solenoid directional control valve control switching-over are connected with the oil pipe that is used to test said banked direction control valves guide hydraulic fluid port respectively; Wherein,
Said solenoid directional control valve (14) oil inlet end is connected with said auxiliary oil circuit pump group through oil pipe.
7. like the said banked direction control valves testing table of claim 6, it is characterized in that said solenoid directional control valve (14) oil inlet end is provided with proportional pressure-reducing valve (12) with the oil pipe that said auxiliary oil circuit pump group is connected;
Said proportional pressure-reducing valve (12) is provided with second pressure transducer (13).
8. like the said banked direction control valves testing table of claim 7, it is characterized in that said solenoid directional control valve (14) oil inlet end is provided with electromagnetic relief valve (8) with the oil pipe that said auxiliary oil circuit pump group is connected.
9. banked direction control valves testing table according to claim 1 is characterized in that said cooling device comprises:
Ebullator group, its water inlet pipe are connected in the cooling water tank (51);
Water-cooled circulator (43) is arranged in the said main supply reservoir (50), and its water inlet pipe is connected on the water side of said ebullator group, and its rising pipe is connected in the said cooling water tank (51);
Temperature controller is arranged on and is used to measure said main supply reservoir (2) inner fluid temperature in the said main supply reservoir (2), when oil liquid temperature surpasses predetermined temperature, starts said ebullator group.
10. like the said banked direction control valves testing table of claim 2, it is characterized in that said fuel feeding assembly also comprises:
Reclaim the pump group, the oil pipe that its oil inlet end connects is inserted in said the testing in table oil case (49) fluid of examination, and the oil pipe of oil outlet end is connected in the said main supply reservoir (50);
Fluid level controller (33) is arranged in the said testing table fuel tank (49), is used to detect said testing table fuel tank (49) fluid height, after said testing table fuel tank (49) fluid height surpasses predetermined altitude, starts said recovery pump group.
11., it is characterized in that said test-bed also comprises like the said banked direction control valves testing table of claim 4:
The oil-feed oil filter (3) that is provided with on the said oil-feed oil circuit, said oil-feed oil filter oil outlet end connects in line check valve (4) and first flow meter (5), also is provided with the 3rd pressure transducer (6) on the said oil-feed oil circuit;
Said proportional pressure control valve (21) is gone up the 4th pressure transducer (30) and second flowmeter (20) that is provided with;
The 5th pressure transducer (36) that is provided with on the said LS control oil channel;
The 3rd flowmeter (34) that is provided with on the said backflow oil circuit.
12., it is characterized in that said power supply module comprises like the said banked direction control valves testing table of claim 10:
Power cabinet; Connect power supply in the power cabinet; Said power supply connects the isolating switch of a plurality of parallel connections, and the isolating switch of a plurality of parallel connections connects coupling separately respectively, and each coupling is respectively applied for and is electrically connected said main oil feed pump group, said auxiliary oil circuit pump group, said cooling device and said reflux pump group;
The startup cabinet that is electrically connected with said power cabinet, in be provided with the reduced voltage starter that is used to supply said main oil feed pump group to open;
Said Control Component comprises:
Control desk: comprise power supply and the control device that is connected with power supply;
The industry control rack that is electrically connected with said control desk comprises display and server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146964.8A CN102692318B (en) | 2012-05-11 | 2012-05-11 | Multi-way valve test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146964.8A CN102692318B (en) | 2012-05-11 | 2012-05-11 | Multi-way valve test bench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102692318A true CN102692318A (en) | 2012-09-26 |
| CN102692318B CN102692318B (en) | 2015-03-18 |
Family
ID=46857918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210146964.8A Expired - Fee Related CN102692318B (en) | 2012-05-11 | 2012-05-11 | Multi-way valve test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102692318B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878153A (en) * | 2012-11-06 | 2013-01-16 | 南京贝奇尔机械有限公司 | Pump-controlled switching device of multi-way valve testing platform, and switching controlling method of pump-controlled switching device |
| CN103471829A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Test stand of multi-way valve of hydraulic excavator |
| CN104677660A (en) * | 2015-02-03 | 2015-06-03 | 贵阳永青仪电科技有限公司 | Automatic detection device and detection method for excavation efficiency of excavator |
| CN105179383A (en) * | 2015-09-28 | 2015-12-23 | 北汽福田汽车股份有限公司 | Engineering machinery, hydraulic system for constant displacement pump of engineering machinery and controlling method of hydraulic system |
| CN105424351A (en) * | 2015-12-21 | 2016-03-23 | 桂林电子科技大学 | System and method for detecting key parameters of large-power vibration valve |
| CN105545878A (en) * | 2016-01-27 | 2016-05-04 | 武汉科技大学 | Transient-pressure oil supply system for multi-way valve test stand |
| CN105840584A (en) * | 2016-05-20 | 2016-08-10 | 四川长江液压天成机械有限公司 | Pump testing unit and testing method used for multi-tandem valve test bed |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201334403Y (en) * | 2008-12-19 | 2009-10-28 | 上海依科绿色工程有限公司 | Test cooling water treatment equipment |
| CN201513403U (en) * | 2009-11-02 | 2010-06-23 | 郑州大方桥梁机械有限公司 | Multistage cylinder integrated control hydraulic valve group |
| CN202582889U (en) * | 2012-05-11 | 2012-12-05 | 北京市三一重机有限公司 | Multi-way valve testing stand |
-
2012
- 2012-05-11 CN CN201210146964.8A patent/CN102692318B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201334403Y (en) * | 2008-12-19 | 2009-10-28 | 上海依科绿色工程有限公司 | Test cooling water treatment equipment |
| CN201513403U (en) * | 2009-11-02 | 2010-06-23 | 郑州大方桥梁机械有限公司 | Multistage cylinder integrated control hydraulic valve group |
| CN202582889U (en) * | 2012-05-11 | 2012-12-05 | 北京市三一重机有限公司 | Multi-way valve testing stand |
Non-Patent Citations (3)
| Title |
|---|
| S. SAITOH ET AL: "Effect of tube diameter on boiling heat transfer of R-134a in horizontal small-diameter tubes", 《INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER》 * |
| 曾定荣: "多路阀综合试验系统设计及试验研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅱ辑）》 * |
| 陈建长等: "液压多路换向阀试验过程工作油口控制", 《工程机械》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878153A (en) * | 2012-11-06 | 2013-01-16 | 南京贝奇尔机械有限公司 | Pump-controlled switching device of multi-way valve testing platform, and switching controlling method of pump-controlled switching device |
| CN102878153B (en) * | 2012-11-06 | 2015-03-18 | 南京贝奇尔机械有限公司 | Pump-controlled switching device of multi-way valve testing platform, and switching controlling method of pump-controlled switching device |
| CN103471829A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Test stand of multi-way valve of hydraulic excavator |
| CN103471829B (en) * | 2013-09-05 | 2015-08-19 | 南京工业大学 | A kind of test stand of multi-way valve of hydraulic excavator |
| CN104677660A (en) * | 2015-02-03 | 2015-06-03 | 贵阳永青仪电科技有限公司 | Automatic detection device and detection method for excavation efficiency of excavator |
| CN105179383A (en) * | 2015-09-28 | 2015-12-23 | 北汽福田汽车股份有限公司 | Engineering machinery, hydraulic system for constant displacement pump of engineering machinery and controlling method of hydraulic system |
| CN105424351A (en) * | 2015-12-21 | 2016-03-23 | 桂林电子科技大学 | System and method for detecting key parameters of large-power vibration valve |
| CN105545878A (en) * | 2016-01-27 | 2016-05-04 | 武汉科技大学 | Transient-pressure oil supply system for multi-way valve test stand |
| CN105840584A (en) * | 2016-05-20 | 2016-08-10 | 四川长江液压天成机械有限公司 | Pump testing unit and testing method used for multi-tandem valve test bed |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102692318B (en) | 2015-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102692318A (en) | Multi-way valve test bench | |
| CN202582889U (en) | Multi-way valve testing stand | |
| CN103471829B (en) | A kind of test stand of multi-way valve of hydraulic excavator | |
| CN105952713B (en) | A kind of hydraulic cylinder pilot system and method for testing | |
| CN206889394U (en) | A kind of hydraulic cylinder durability testing stand | |
| CN201858218U (en) | Oil return device for engineering machinery | |
| CN110778556A (en) | High-pressure multi-way valve reliability test bench and test method based on same | |
| CN202402394U (en) | Direction control multi-way valve test stand | |
| CN202579472U (en) | Oil replenishing and cooling system | |
| CN103591083A (en) | Hydraulic test stand for oil cylinders | |
| CN203548388U (en) | Hydraulic loading loop for multi-way valve | |
| CN104832475A (en) | Hydraulic control system for active compensation part of semi-active ascending and descending compensation device | |
| CN103452958A (en) | Pressure valve debugging system | |
| CN107489666A (en) | ROV small-sized hydraulic testboards | |
| CN103982489B (en) | The modular control apparatus tested for hydraulic pump and hydraulic motor | |
| CN107605837A (en) | A kind of hydraulic system for load test | |
| CN204099314U (en) | The automatic thickness hydraulic control system of high low pressure independence split | |
| CN202646237U (en) | Oil source device for hydraulic system | |
| CN207297498U (en) | A kind of hydraulic system for load test | |
| CN218294051U (en) | Flow test bed for multi-way valve | |
| CN202149102U (en) | Novel test bed device of hydraulic valve | |
| CN105351265B (en) | A kind of rigid passive volume synchronous hydraulic control system of Multi-cylinder | |
| CN101915666A (en) | Test method and system for reliability of swing mechanism based on power recovery technology | |
| CN102607876A (en) | Multi-path high-precision hydraulic loading and unloading servo control system suitable for model test | |
| CN203892303U (en) | Modularized control device used for testing hydraulic pumps and hydraulic motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20200511 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |