CN202402395U - Device for testing multi-way valve - Google Patents
Device for testing multi-way valve Download PDFInfo
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- CN202402395U CN202402395U CN2012200093002U CN201220009300U CN202402395U CN 202402395 U CN202402395 U CN 202402395U CN 2012200093002 U CN2012200093002 U CN 2012200093002U CN 201220009300 U CN201220009300 U CN 201220009300U CN 202402395 U CN202402395 U CN 202402395U
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Abstract
The utility model discloses a device for testing a multi-way valve. The testing device comprises an electronic control unit (1) and a plurality of electronic control flow adjustment main pump units which ate communicated with a plurality of pressure oil ports (5P1 and 5P2) of the multi-way valve (5) to be tested; and the control ports of the electronic control flow adjustment main pump units are connected with the output interfaces of the electronic control unit (1). Due to the adoption of the technical scheme, the electronic control flow adjustment main pump units supply oil to the pressure oil ports of the multi-way valve to be tested respectively, so that the output flow of the electronic control flow adjustment main pump units can be adjusted conveniently by the electronic control unit according to requirements; and therefore, the oil supply flow of the pressure oil ports of the multi-way valve can be adjusted continuously, independently and conveniently.
Description
Technical field
The utility model relates to Hydraulic Field, particularly, relates to a kind of multi-way valve testing apparatus.
Background technique
The multi-way valve testing apparatus is used for the performance of multi-way valve is tested.Usually selectively dispose minus flow control system, positive flow control system and load sensing controlled system on the multi-way valve, so that the output flow of the pump of the pressure oil confession of subtend multi-way valve oil is controlled.The minus flow control system is meant, on the bypass oil circuit of multi-way valve, flow detector is set, and the control pump discharge capacity becomes negative linear relationship with bypass oil return flow, thereby reduces bypass oil return power loss.Positive flow control system is meant that utilize the pilot pressure of multi-way valve directly to control pump delivery, pilot pressure is high more, and pump delivery is big more.The load sensing controlled system is meant; The pressure that load is required or the signal of changes in flow rate pass to the sensitive cavity of multi-way valve or pump Variable Control mechanism; Thereby the running state of adjustment pump; Make it almost only provide load needed hydraulic power, reduce two associated loss of pressure and flow to greatest extent to system.The multi-way valve testing apparatus according to the difference of the control system that multi-way valve disposed, also need correspondingly carry out minus flow control test, positive pilot flow control and load sensing controlled test except the routine test project of multi-way valve being carried out the GB regulation.
The schematic block diagram of existing a kind of multi-way valve testing apparatus has been shown among Fig. 1.In Fig. 1, multi-way valve 5 to be measured is two multi-way valve, and this multi-way valve 5 to be measured also can in like manner expand to the multi-way valve more than two certainly.As shown in Figure 1, this multi-way valve testing apparatus comprises two variable displacement pumps 101,102 that are communicated with two pressure hydraulic fluid port 5P1,5P2 of multi-way valve 5 to be measured, and these two variable displacement pumps 101,102 are driven by same variable-frequency motor 103.The side is connected to the off-load oil circuit on the oil feed line of one of them variable displacement pump 102, is serially connected with selector valve 104 on this off-load oil circuit, so that control the break-make of this off-load oil circuit.This multi-way valve testing apparatus also comprises charge valve 4, guide's control pump 6 and pilot-actuated valve 7; Charge valve 4 is communicated with a plurality of actuator port 5A1,5B1,5A2, the 5B2 of multi-way valve 5 to be measured, and pilot-actuated valve 7 is serially connected on the oil circuit between the pilot control opening 5K1,5K2,5K3,5K4 of guide's control pump 6 and multi-way valve to be measured 5.In multi-way valve testing apparatus shown in Figure 1; In order to carry out minus flow control test to multi-way valve 5 to be measured; Variable displacement pump 101,102 is for having the variable displacement pump of minus flow control module; Two input ends of this minus flow control module are communicated with two minus flow pressure feedback mouth 5Pf1,5Pf2 of multi-way valve 5 to be measured through stop valve 301,302 respectively, and two output terminals of this minus flow control module are connected with the control mouth of two variable displacement pumps 101,102 respectively.
When carrying out the routine test of GB regulation, require oil sources that continuously adjustable test flow is provided.At this moment; Close stop valve 301,302; The minus flow control module is under no minus flow feedback pressure input at this moment, and the discharge capacity of controlling two variable displacement pumps 101,102 reaches maximum value automatically, and it is electric so that variable displacement pump 102 off-loads that selector valve 104 is got; Only by variable displacement pump 101 to multi-way valve 5 fuel feeding to be measured, the rotating speed through regulating variable-frequency motor 103 is so that the fuel supply flow rate of variable displacement pump 101 is adjustable continuously.
When carrying out minus flow when test control, the test flow that requires oil sources to provide the pressure with minus flow pressure feedback mouth Pf1, Pf2 to change.Open stop valve 301,302; The minus flow control module will be adjusted the displacement size of main pump 101,102 with the oil liquid pressure of minus flow pressure feedback mouth Pf1, Pf2 as input this moment; With selector valve 104 dead electricity so that variable displacement pump 101,102 work simultaneously; Regulate variable-frequency motor 103 and be in test speed, this moment, variable displacement pump 101,102 and quilt examination multi-way valve 4 constituted the minus flow control system, can carry out minus flow control test.
When carrying out the test of positive pilot flow control or load sensing controlled; Variable displacement pump 101,102 is replaced by the variable displacement pump with positive flow-control module or load sensing controlled module, and the feedback pressure of control module input is correspondingly for coming from pilot control opening 5K1,5K2,5K3, the pressure of 5K4 or the pressure of load sensing pressure feedback mouth of multi-way valve 5 to be measured.
Therefore, existing above-mentioned multi-way valve testing apparatus is bad to the applicability of the routine test of GB regulation.Realize continuously adjustable test flow, must adopt the variable-frequency motor speed governing again a variable displacement pump off-load.Therefore, can't realize simultaneously the independence of the fuel supply flow rate of two pressure hydraulic fluid ports of multi-way valve adjustable continuously.In addition, the utilization ratio of above-mentioned multi-way valve testing apparatus is limited.For example, the multi-way valve testing apparatus that can carry out minus flow control test only can be done the routine test and the minus flow control test of GB regulation, when needs carry out positive pilot flow control and/or load sensing controlled test, must change variable displacement pump and reclosing oil circuit.
The model utility content
The purpose of the utility model provides a kind of multi-way valve testing apparatus that can solve above-mentioned partial technical problems of the prior art at least; For example this multi-way valve testing apparatus is better to the adaptability of the routine test of GB regulation, can realize the independence of the fuel supply flow rate of a plurality of pressure hydraulic fluid ports of multi-way valve adjustable continuously easily simultaneously.
To achieve these goals; The utility model provides a kind of multi-way valve testing apparatus; Wherein, This testing apparatus comprises ECU and a plurality of automatically controlled Flow-rate adjustment main pump unit that is communicated with a plurality of pressure hydraulic fluid ports of multi-way valve to be measured respectively, and the control mouth of said automatically controlled Flow-rate adjustment main pump unit is connected with the output port of said ECU.
Preferably, this testing apparatus also comprises a plurality of pressure transducers that are communicated with a plurality of control mouths of said multi-way valve to be measured respectively, and this pressure transducer is connected with the input port of said ECU.
Preferably; Said a plurality of pressure transducer comprises first pressure transducer that is communicated with the minus flow pressure feedback mouth of said multi-way valve to be measured; Said ECU is built-in with minus flow control model; Said ECU utilizes said minus flow control model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said first pressure transducer input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
Preferably; Said a plurality of pressure transducer comprises second pressure transducer that is communicated with the load sensing pressure feedback mouth of said multi-way valve to be measured; Said ECU is built-in with the load sensing controlled model; Said ECU utilizes said load sensing controlled model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said second pressure transducer input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
Preferably; Said a plurality of pressure transducer comprises the 3rd pressure transducer that is communicated with the pilot control opening of said multi-way valve to be measured; Said ECU is built-in with positive flow control model; Said ECU utilizes said positive flow control model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said the 3rd pressure transducer input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
Preferably; Said automatically controlled Flow-rate adjustment main pump unit comprises electricity accent proportional control discharge capacity adjusting pump; The output port of said ECU transfers proportional control discharge capacity adjusting pump delivery control mouth to be connected with said electricity, and said electricity transfers the delivery outlet of proportional control discharge capacity adjusting pump to be communicated with the pressure hydraulic fluid port of said multi-way valve to be measured.
Preferably; Said automatically controlled Flow-rate adjustment main pump unit comprises that hydraulic control proportional control discharge capacity is regulated pump and electricity is transferred proportional pressure-reducing valve; The output port of said ECU transfers the control mouth of proportional pressure-reducing valve to be connected with said electricity; Said electricity transfers the delivery outlet of proportional pressure-reducing valve to be connected with said hydraulic control proportional control discharge capacity adjusting pump delivery control mouth, and the delivery outlet that said hydraulic control proportional control discharge capacity is regulated pump is communicated with the pressure hydraulic fluid port of said multi-way valve to be measured.
Preferably; Said automatically controlled Flow-rate adjustment main pump unit comprises first metering pump and electricity accent proportional flow control valve; The output port of said ECU transfers the control mouth of proportional flow control valve to be connected with electricity, and said electricity accent proportional flow control valve is serially connected on the oil circuit between the pressure hydraulic fluid port of delivery outlet and said multi-way valve to be measured of said first metering pump.
Preferably; Said automatically controlled Flow-rate adjustment main pump unit comprises second metering pump and the variable-frequency motor that is connected with this second metering pump; The delivery outlet of said second metering pump is communicated with the pressure hydraulic fluid port of said multi-way valve to be measured, and the output port of said ECU is connected with the frequency-variable controller of said variable-frequency motor.
Preferably; This testing apparatus also comprises charge valve, guide's control pump, pilot-actuated valve, a plurality of relief valve; Said charge valve is communicated with a plurality of actuator ports of said multi-way valve to be measured; Said pilot-actuated valve is serially connected on the oil circuit between the pilot control opening of said guide's control pump and said multi-way valve to be measured, and said a plurality of relief valves are other respectively to be connected on a plurality of pressure hydraulic fluid ports and the oil circuit between said a plurality of automatically controlled Flow-rate adjustment main pump unit of said multi-way valve to be measured.
Preferably; Be connected with the 4th pressure transducer respectively on the oil circuit that the return opening of said multi-way valve to be measured, a plurality of actuator port and a plurality of pressure hydraulic fluid port are communicated with; The 4th pressure transducer is connected with the input port of said ECU; Said a plurality of relief valve is an adjustable relief valve, and the control mouth of these a plurality of relief valves is connected with the output port of said ECU.
Pass through technique scheme; Because it is oily to a plurality of pressure oil confessions of multi-way valve to be measured respectively through a plurality of automatically controlled Flow-rate adjustment main pump unit; Therefore can regulate the output flow of a plurality of automatically controlled Flow-rate adjustment main pump unit easily as required through ECU, thereby can realize the independence of the fuel supply flow rate of a plurality of pressure hydraulic fluid ports of multi-way valve adjustable continuously easily simultaneously.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the schematic block diagram of existing a kind of multi-way valve testing apparatus;
Fig. 2 to Fig. 5 is respectively the schematic block diagram according to four kinds of mode of executions of the utility model.
Description of reference numerals
1 ECU;
311,312 first pressure transducers;
321,322,323,324 the 3rd pressure transducers;
331,332,333,334,335,336,337 the 4th pressure transducers;
5 multi-way valve to be measured;
5P1,5P2 pressure hydraulic fluid port
The 5T return opening;
5A1,5B1,5A2,5B2 pressure hydraulic fluid port;
5K1,5K2,5K3,5K4 pilot control opening;
5Pf1,5Pf2 minus flow pressure feedback mouth;
211,221 electricity transfer the proportional control discharge capacity to regulate pump;
2121,2221 hydraulic control proportional control discharge capacities are regulated pump;
2122,2222 electricity are transferred proportional pressure-reducing valve;
2131,2,231 first metering pumps;
2132,2232 electricity are transferred proportional flow control valve;
2133,2233 flow transducers;
2141,2,241 second metering pumps;
2142,2242 variable-frequency motors;
4 charge valves;
6 guide's control pumps;
7 pilot-actuated valves;
8 relief valves;
9 flow transducers.
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
At Fig. 2 to the mode of execution shown in Figure 5; Though with multi-way valve 5 to be measured is that two multi-way valve are that example illustrates and explains; But those of ordinary skills can easily understand, and this multi-way valve testing apparatus in like manner can expand to the multi-way valve testing apparatus that the multi-way valve more than two is made an experiment.
As shown in Figure 2; A kind of mode of execution of the utility model provides a kind of multi-way valve testing apparatus; Wherein, This testing apparatus comprise ECU 1 and respectively with a plurality of pressure hydraulic fluid port 5P1 of multi-way valve 5 to be measured, a plurality of automatically controlled Flow-rate adjustment main pump unit that 5P2 is communicated with, the control mouth of said automatically controlled Flow-rate adjustment main pump unit is connected with the output port of said ECU 1.
Pass through technique scheme; Since through a plurality of automatically controlled Flow-rate adjustment main pump unit respectively to a plurality of pressure hydraulic fluid port 5P1, the 5P2 fuel feeding of multi-way valve 5 to be measured; Therefore can regulate the output flow of a plurality of automatically controlled Flow-rate adjustment main pump unit easily as required through ECU 1, thereby the independence of fuel supply flow rate that can realize a plurality of pressure hydraulic fluid port 5P1,5P2 to multi-way valve 5 easily simultaneously is adjustable continuously.
Preferably, this multi-way valve testing apparatus also comprises a plurality of pressure transducers that are communicated with a plurality of control mouths of said multi-way valve 5 to be measured respectively, and this pressure transducer is connected with the input port of said ECU 1.Thereby, can carry out the control corresponding test according to the difference of the control system of multi-way valve to be measured 5 configurations.When multi-way valve 5 configurations to be measured are used for the minus flow control system, should the control mouth be minus flow pressure feedback mouth 5Pf1, the 5Pf2 of multi-way valve 5 to be measured then for example; When multi-way valve 5 configurations to be measured are used for positive flow control system, should the control mouth be pilot control opening 5K1,5K2,5K3, the 5K4 of multi-way valve 5 to be measured then; When multi-way valve 5 configurations to be measured are used for the load sensing controlled system, should the control mouth be the load sensing pressure feedback mouth of multi-way valve 5 to be measured then.To explain in more detail these three kinds of situation below.
As shown in Figure 2; Said a plurality of pressure transducer can comprise first pressure transducer 311,312 that is communicated with minus flow pressure feedback mouth 5Pf1, the 5Pf2 of said multi-way valve 5 to be measured; Said ECU 1 is built-in with minus flow control model; Said ECU 1 utilizes said minus flow control model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said first pressure transducer 311,312 inputs, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.Thereby the multi-way valve testing apparatus can carry out minus flow control test easily.
As shown in Figure 2; Said a plurality of pressure transducer can comprise the second pressure transducer (not shown) that is communicated with the load sensing pressure feedback mouth (not shown) of said multi-way valve 5 to be measured; Said ECU 1 is built-in with the load sensing controlled model; Said ECU 1 utilizes said load sensing controlled model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said second pressure transducer input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.Thereby the multi-way valve testing apparatus can carry out the load sensing controlled test easily.
As shown in Figure 2; Said a plurality of pressure transducer can comprise the 3rd pressure transducer 321,322,323,324 that is communicated with pilot control opening 5K1,5K2,5K3, the 5K4 of said multi-way valve 5 to be measured; Said ECU 1 is built-in with positive flow control model; Said ECU 1 utilizes said positive flow control model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said the 3rd pressure transducer 321,322,323,324 inputs, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.Thereby the multi-way valve testing apparatus can carry out positive pilot flow control easily.
Above-mentioned minus flow control model, load sensing controlled model and positive flow control model all are well known in the art, repeat no more at this.
The multi-way valve testing apparatus preferably is provided with above-mentioned first pressure transducer 311,312, second pressure transducer and the 3rd pressure transducer 321,322,323,324 and corresponding ECU 1 simultaneously; Thereby can improve the utilization ratio of multi-way valve testing apparatus widely, need not to change parts or reclosing oil circuit and just can carry out minus flow control test, positive pilot flow control and load sensing controlled test easily.Certainly, the multi-way valve testing apparatus also can be as required, and one or both and corresponding ECU 1 in first pressure transducer 311,312, second pressure transducer and the 3rd pressure transducer 321,322,323,324 only are set.
Said automatically controlled Flow-rate adjustment main pump unit can be exported corresponding flow according to the signal of the representative flow value of ECU 1 output, and this can realize according to various suitable forms.The main distinction of the multi-way valve testing apparatus of four kinds of mode of executions shown in Fig. 2 to Fig. 5 is that the implementation of automatically controlled Flow-rate adjustment main pump unit is different, will explain more specifically below.
As shown in Figure 2; Said automatically controlled Flow-rate adjustment main pump unit comprises electricity accent proportional control discharge capacity adjusting pump 211,221; The output port of said ECU 1 is connected with the discharge capacity control mouth that said electricity transfers the proportional control discharge capacity to regulate pump 211,221, and the delivery outlet that said electricity transfers the proportional control discharge capacity to regulate pump 211,221 is communicated with pressure hydraulic fluid port 5P1, the 5P2 of said multi-way valve 5 to be measured.Thereby the output port output and the corresponding discharge capacity signal of required flow value of ECU 1 transfer proportional control discharge capacity adjusting pump 211,221 to be adjusted to corresponding discharge capacity to control electricity.
As shown in Figure 3; Said automatically controlled Flow-rate adjustment main pump unit comprises that hydraulic control proportional control discharge capacity is regulated pump 2121,2221 and electricity is transferred proportional pressure-reducing valve 2122,2222; The output port of said ECU 1 transfers the control mouth of proportional pressure-reducing valve 2122,2222 to be connected with said electricity; Said electricity transfers the delivery outlet of proportional pressure-reducing valve 2122,2222 to be connected with the discharge capacity control mouth that said hydraulic control proportional control discharge capacity is regulated pump 2121,2221, and the delivery outlet that said hydraulic control proportional control discharge capacity is regulated pump 2121,2221 is communicated with pressure hydraulic fluid port 5P1, the 5P2 of said multi-way valve 5 to be measured.Thereby; The output port output of ECU 1 and the corresponding signal of representing electricity to transfer proportional pressure-reducing valve 2122,2222 required delivery pressures of required flow value; So that the control electricity is transferred the corresponding pressure of proportional pressure-reducing valve 2122,2222 outputs, the pressure control hydraulic control proportional control discharge capacity of this output is regulated pump 2121,2221 outputs and the corresponding discharge capacity of required flow.
As shown in Figure 4; Said automatically controlled Flow-rate adjustment main pump unit comprises first metering pump 2131,2231 and electricity accent proportional flow control valve 2132,2232; The output port of said ECU 1 transfers the control mouth of proportional flow control valve 2132,2232 to be connected with electricity, and said electricity accent proportional flow control valve 2132,2232 is serially connected on the pressure hydraulic fluid port 5P1, the oil circuit between the 5P2 of delivery outlet and the said multi-way valve to be measured 5 of said first metering pump 2131,2231.Thereby; The output port output of ECU 1 and the corresponding signal of representing electricity to transfer proportional flow control valve 2132,2232 required output flows of required flow value; Transfer the restriction size of proportional flow control valve 2132,2232 to control electricity; So that pressure hydraulic fluid port 5P1,5P2 to multi-way valve 5 to be measured provide corresponding required flow, the residual hydraulic pressure oil of first metering pump, 2131,2231 outputs then flows back to fuel tank.
As shown in Figure 5; Said automatically controlled Flow-rate adjustment main pump unit comprises second metering pump 2141,2241 and the variable-frequency motor 2142,2242 that is connected with this second metering pump 2141,2241; The delivery outlet of said second metering pump 2141,2241 is communicated with pressure hydraulic fluid port 5P1, the 5P2 of said multi-way valve 5 to be measured, and the output port of said ECU 1 is connected with the frequency-variable controller of said variable-frequency motor 2142,2242.Thereby; The output port output of ECU 1 and the corresponding signal of required rotating speed of the corresponding representative variable-frequency motor 2142,2242 of required flow; Make variable-frequency motor 2142,2242 with this required rotary speed working, thus the corresponding required flow of second metering pump, 2141,2241 outputs.
Extremely shown in Figure 5 like Fig. 2; The multi-way valve testing apparatus can also comprise charge valve 4, guide's control pump 6, pilot-actuated valve 7 and a plurality of relief valve 8; Said charge valve 4 is communicated with a plurality of actuator port 5A1,5B1,5A2, the 5B2 of said multi-way valve 5 to be measured; Said pilot-actuated valve 7 is serially connected on the oil circuit between the pilot control opening 5K1,5K2,5K3,5K4 of said guide's control pump 6 and said multi-way valve to be measured 5, and said a plurality of relief valves 8 are other respectively to be connected on the oil circuit between a plurality of pressure hydraulic fluid port 5P1,5P2 and the said a plurality of automatically controlled Flow-rate adjustment main pump unit of said multi-way valve to be measured 5.Charge valve 4 is used for loading corresponding pressure to actuator port 5A1,5B1,5A2, the 5B2 of multi-way valve 5 to be measured.To shown in Figure 5, each actuator port 5A1 of multi-way valve 5 to be measured, 5B1,5A2,5B2 be last to be connected with a charge valve 4 respectively like Fig. 2.Between the actuator port 5A1 of multi-way valve 5 to be measured and the 5B1 and actuator port 5A2 and 5B2 can be serially connected with flow transducer 9, this flow transducer 9 can be connected with the input port of ECU 1.Flow transducer 9 is used for writing down the flow of test working oil path, and this flow information is fed back to ECU 1.Guide's control pump 6 is used for to pilot control opening 5K1,5K2,5K3, the 5K4 of multi-way valve 5 to be measured pilot pressure being provided with pilot-actuated valve 7.A plurality of relief valves 8 are used for controlling respectively the delivery pressure of a plurality of automatically controlled Flow-rate adjustment main pump unit, so that control system pressure.
Preferably; Extremely shown in Figure 5 like Fig. 2; Be connected with the 4th pressure transducer 331,332,333,334,335,336,337 respectively on the oil circuit that the return opening 5T of said multi-way valve 5 to be measured, a plurality of actuator port 5A1,5B1,5A2,5B2 and a plurality of pressure hydraulic fluid port 5P1,5P2 are communicated with; The 4th pressure transducer 331,332,333,334,335,336,337 is connected with the input port of said ECU 1; Said a plurality of relief valve 8 is an adjustable relief valve, and the control mouth of these a plurality of relief valves 8 is connected with the output port of said ECU 1.Thereby; When carrying out the routine test of GB regulation; The pressure on the corresponding oil circuit can measured and write down to the 4th pressure transducer 331,332,333,334,335,336,337; And this force value fed back to ECU 1, ECU 1 can draw corresponding test result according to these force value.In addition, according to the difference of the control model that is adopted, ECU 1 can also be selected the input value of required force value as the control model, so that draw corresponding output signal.The control mouth of a plurality of relief valves 8 is connected with the output port of said ECU 1, so ECU 1 can also control the overflow value of relief valve 8 as required, so that control system pressure.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (11)
1. multi-way valve testing apparatus; It is characterized in that; This testing apparatus comprise ECU (1) and respectively with a plurality of pressure hydraulic fluid port (5P1 of multi-way valve to be measured (5); The a plurality of automatically controlled Flow-rate adjustment main pump unit that 5P2) is communicated with, the control mouth of said automatically controlled Flow-rate adjustment main pump unit is connected with the output port of said ECU (1).
2. multi-way valve testing apparatus according to claim 1; It is characterized in that; This testing apparatus also comprises a plurality of pressure transducers that are communicated with a plurality of control mouths of said multi-way valve to be measured (5) respectively, and this pressure transducer is connected with the input port of said ECU (1).
3. multi-way valve testing apparatus according to claim 2; It is characterized in that; Said a plurality of pressure transducer comprises minus flow pressure feedback mouth (5Pf1, first pressure transducer (311,312) that 5Pf2) is communicated with said multi-way valve to be measured (5); Said ECU (1) is built-in with minus flow control model; Said ECU (1) utilizes said minus flow control model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said first pressure transducer (311,312) input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
4. multi-way valve testing apparatus according to claim 2; It is characterized in that; Said a plurality of pressure transducer comprises second pressure transducer that is communicated with the load sensing pressure feedback mouth of said multi-way valve to be measured (5); Said ECU (1) is built-in with the load sensing controlled model; Said ECU (1) utilizes said load sensing controlled model to draw the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit according to the force value of said second pressure transducer input, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
5. multi-way valve testing apparatus according to claim 2 is characterized in that, said a plurality of pressure transducers comprise the pilot control opening (5K1 with said multi-way valve to be measured (5); 5K2,5K3, the 3rd pressure transducer (321 that 5K4) is communicated with; 322,323,324); Said ECU (1) is built-in with positive flow control model, and said ECU (1) utilizes said positive flow control model according to said the 3rd pressure transducer (321,322; 323,324) force value of input draws the flow value of corresponding said automatically controlled Flow-rate adjustment main pump unit, and will represent the signal of this flow value to send to corresponding said automatically controlled Flow-rate adjustment main pump unit.
6. according to any described multi-way valve testing apparatus in the claim 1 to 5, it is characterized in that said automatically controlled Flow-rate adjustment main pump unit comprises electricity accent proportional control discharge capacity adjusting pump (211; 221); The discharge capacity control mouth that the output port of said ECU (1) and said electricity transfer the proportional control discharge capacity to regulate pump (211,221) connects, and said electricity transfers the proportional control discharge capacity to regulate pump (211; (5P1 5P2) is communicated with the pressure hydraulic fluid port of delivery outlet 221) and said multi-way valve to be measured (5).
7. according to any described multi-way valve testing apparatus in the claim 1 to 5, it is characterized in that said automatically controlled Flow-rate adjustment main pump unit comprises hydraulic control proportional control discharge capacity adjusting pump (2121; 2221) and electricity transfer proportional pressure-reducing valve (2122; 2222), the output port of said ECU (1) and said electricity transfer the control mouth of proportional pressure-reducing valve (2122,2222) to connect; Said electricity is transferred proportional pressure-reducing valve (2122; 2222) delivery outlet and said hydraulic control proportional control discharge capacity are regulated the discharge capacity control mouthful connection of pump (2121,2221), and said hydraulic control proportional control discharge capacity is regulated pump (2121; (5P1 5P2) is communicated with the pressure hydraulic fluid port of delivery outlet 2221) and said multi-way valve to be measured (5).
8. according to any described multi-way valve testing apparatus in the claim 1 to 5, it is characterized in that said automatically controlled Flow-rate adjustment main pump unit comprises first metering pump (2131; 2231) and electricity transfer proportional flow control valve (2132; 2232), the output port of said ECU (1) transfers the control mouth of proportional flow control valve (2132,2232) to connect with electricity; Said electricity is transferred proportional flow control valve (2132; 2232) (5P1 is on the oil circuit between 5P2) to be serially connected in the delivery outlet of said first metering pump (2131,2231) and the pressure hydraulic fluid port of said multi-way valve to be measured (5).
9. according to any described multi-way valve testing apparatus in the claim 1 to 5, it is characterized in that said automatically controlled Flow-rate adjustment main pump unit comprises second metering pump (2141; 2241) and with this second metering pump (2141; 2241) variable-frequency motor (2142,2242) that connects, said second metering pump (2141; Pressure hydraulic fluid port (the 5P1 of delivery outlet 2241) and said multi-way valve to be measured (5); 5P2) be communicated with, the frequency-variable controller of the output port of said ECU (1) and said variable-frequency motor (2142,2242) connects.
10. multi-way valve testing apparatus according to claim 1; It is characterized in that; This testing apparatus also comprises charge valve (4), guide's control pump (6), pilot-actuated valve (7), a plurality of relief valve (8), a plurality of actuator ports (5A1, the 5B1 of said charge valve (4) and said multi-way valve to be measured (5); 5A2; 5B2) be communicated with, said pilot-actuated valve (7) is serially connected in pilot control opening (5K1, the 5K2 of said guide's control pump (6) and said multi-way valve to be measured (5); 5K3; On the oil circuit 5K4), said a plurality of relief valves (8) are other respectively to be connected on a plurality of pressure hydraulic fluid ports of said multi-way valve to be measured (5) (5P1 is 5P2) and on the oil circuit between said a plurality of automatically controlled Flow-rate adjustment main pump unit.
11. multi-way valve testing apparatus according to claim 10 is characterized in that, with the return opening (5T) of said multi-way valve to be measured (5), a plurality of actuator port (5A1,5B1; 5A2,5B2) (5P1 is connected with the 4th pressure transducer (331,332,333 respectively on the oil circuit that 5P2) is communicated with a plurality of pressure hydraulic fluid ports; 334,335,336,337), the 4th pressure transducer (331; 332,333,334,335; 336,337) input port with said ECU (1) is connected, and said a plurality of relief valves (8) are adjustable relief valve, and the control mouth of these a plurality of relief valves (8) is connected with the output port of said ECU (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200093002U CN202402395U (en) | 2012-01-10 | 2012-01-10 | Device for testing multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200093002U CN202402395U (en) | 2012-01-10 | 2012-01-10 | Device for testing multi-way valve |
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| CN202402395U true CN202402395U (en) | 2012-08-29 |
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| CN2012200093002U Expired - Lifetime CN202402395U (en) | 2012-01-10 | 2012-01-10 | Device for testing multi-way valve |
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| CN (1) | CN202402395U (en) |
Cited By (5)
| 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 |
| CN103511398A (en) * | 2013-10-09 | 2014-01-15 | 合肥工业大学 | Engineering machine speed control valve full-automatic performance detecting device |
| CN103969009A (en) * | 2014-04-17 | 2014-08-06 | 广州特种承压设备检测研究院 | Testing device of multi-way 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 |
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2012
- 2012-01-10 CN CN2012200093002U patent/CN202402395U/en not_active Expired - Lifetime
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 |
| 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 |
| CN103511398A (en) * | 2013-10-09 | 2014-01-15 | 合肥工业大学 | Engineering machine speed control valve full-automatic performance detecting device |
| CN103511398B (en) * | 2013-10-09 | 2015-12-23 | 合肥工业大学 | The full-automatic device for detecting performance of engineering machinery speed control valve |
| CN103969009A (en) * | 2014-04-17 | 2014-08-06 | 广州特种承压设备检测研究院 | Testing device of multi-way 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 |
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