CN202926757U - Load simulation and test system of engineering machine - Google Patents
Load simulation and test system of engineering machine Download PDFInfo
- Publication number
- CN202926757U CN202926757U CN 201220601036 CN201220601036U CN202926757U CN 202926757 U CN202926757 U CN 202926757U CN 201220601036 CN201220601036 CN 201220601036 CN 201220601036 U CN201220601036 U CN 201220601036U CN 202926757 U CN202926757 U CN 202926757U
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- hydraulic pump
- oil
- control valve
- pressure control
- load
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims description 52
- 239000010720 hydraulic oil Substances 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 8
- 239000002828 fuel tank Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012353 t test Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a load simulation and test system of an engineering machine, which comprises a motive power source, an accelerator controller, a torque rotating speed sensor, a hydraulic pump, a pressure flow rate collecting unit, a proportion overflow valve, a microprocessor and a control computer, wherein the two ends of the torque rotating speed sensor are respectively connected with the motive power source and the hydraulic pump, the installing positions of the pressure sensor or the flow rate sensor comprise a hydraulic pump oil outlet and a proportion overflow valve oil inlet, and the torque rotating speed sensor, the pressure flow rate collecting unit, the accelerator controller, the proportion overflow valve and the control computer are respectively connected with the microprocessor. The oil outlet pressure or the flow rate of the hydraulic pump is controlled by the proportion overflow valve for simulating the load change of a hydraulic motive power system of the engineering machine, and the precise simulation on the transient conditions of the hydraulic pump hydraulic load and the motive power source motive power load of the engineering machine in the actual operation process is realized, so the precision, the consistency and the reproducibility of test experiments are improved.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly a kind of engineering machinery load simulation and test system.
Background technique
With the performance of the power source of the working efficiency of the engineering machinery of hydraulic pump drive and fuel economy and driving oil hydraulic pump and mate closely related.In the engineer operation of reality, oil hydraulic pump driven force source obtains mechanical energy and is converted into hydraulic pressure potential energy on the one hand; Power source has its different best transition operation point, line or interval when completing transformation of energy from oil hydraulic pump on the other hand.For the service behaviour of betterment works machinery, reach best coupling work, the real work situation of power source and oil hydraulic pump need to be carried out the test of power character and economic testing and matching optimization.Traditional testing experiment method is mainly taked the entrucking actual measurement or is tested by the power measurer fictitious load, workload is large, test is difficult, the cycle is long, cost is high and entrucking is surveyed not only, optimize improving cost high, and due to the variation of manipulating object and the difference of operator's level, make the comparativity of test result and stability all relatively poor; By electric dynamometer or electromotor simulation load owing to having changed the load transfer mode, its poor accuracy, distortion is serious, especially almost can't test the TRANSIENT DYNAMIC RESPONSE situation that affects the engineering machinery working efficiency.
The model utility content
The purpose of this utility model is to provide a kind of engineering machinery load simulation and test system, realize that oil hydraulic pump and power source load on and simulate on test room's stand and matching optimization test, overcome the problem that in entrucking test or other conventionally tests, conformity is poor, precision is low, can not reproduce.
A kind of engineering machinery load simulation and test system, this system comprises power source, throttle control, torque speed sensor, oil hydraulic pump, pressure flow collecting unit, proportional pressure control valve, microprocessor and controls computer;
Described pressure flow collecting unit comprises one or both in pressure transducer or flow transducer at least;
Described torque speed sensor two ends connect with power source and oil hydraulic pump respectively; The mounting point of described pressure transducer comprises arbitrary position between the filler opening of oil hydraulic pump oil outlet and proportional pressure control valve, and the mounting point of described flow transducer comprises between the filler opening of oil hydraulic pump oil outlet and proportional pressure control valve and arbitrary position between proportional pressure control valve and fuel tank;
Described proportional pressure control valve filler opening is connected by the first hydraulic oil pipe with the oil hydraulic pump oil outlet;
Described proportional pressure control valve oil outlet and oil hydraulic pump filler opening respectively by the 3rd hydraulic oil pipe be connected hydraulic oil pipe and be connected with fuel tank;
Described microprocessor all is connected with rotary speed torque sensor, pressure flow collecting unit, throttle control and proportional pressure control valve;
Described control computer is connected with microprocessor.
Described oil hydraulic pump comprises M pump unit, and described pump unit comprises N main pump and/or pioneer pump, and M and N are the integer more than or equal to 1.
Described power source comprises a kind of in the middle of diesel engine, petrol engine and motor at least.
Beneficial effect
A kind of engineering machinery load simulation of the utility model and test system, this system comprises power source, throttle control, torque speed sensor, oil hydraulic pump, pressure flow collecting unit, proportional pressure control valve, microprocessor and controls computer; System architecture is simple, and is reliable and stable; The passing ratio relief valve is controlled the load variations that oil pressure or flow come model engineering mechanical-hydraulic power system that of oil hydraulic pump, not only realized the accurate simulation of the power source dynamic load in the actual job process and oil hydraulic pump fluid power load transient situation to engineering machinery, also can realize simultaneously the accurate simulation of multiple special operation operating mode and work pattern, thereby improve precision, conformity and the reproducibility of testing experiment.
Description of drawings
Fig. 1 is principle schematic of the present utility model;
Fig. 2 is system construction drawing of the present utility model;
Fig. 3 is the simulation of the utility model job load and test result figure;
Fig. 4 is that the utility model is at load impact and prominent simulation and the test result figure that unloads.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is system principle knot schematic diagram of the present utility model.
Be of the present utility model for concrete application example of excavator as shown in Figure 2, this system comprises throttle control 1, motor 2, torque speed sensor 3, oil hydraulic pump (comprising two main pumps and a pioneer pump) the 4, first hydraulic oil pipe 5, pressure transducer 6, proportional pressure control valve 7, fuel tank 8, the second hydraulic oil pipe 9, the 3rd hydraulic oil pipe 13, microprocessor 10, controls computer 11 and connecting line 12; Wherein the flywheel output terminal of motor 2 is connected with torque sensor 3, the oil hydraulic pump 4 of integrated two main pumps and a pioneer pump is connected with torque sensor 3, two main pumps of oil hydraulic pump 4 with is connected the oil outlet of a pioneer pump and is connected with proportional pressure control valve with pressure transducer 6 by the first hydraulic oil pipe 5 and is connected successively, microprocessor 10 passes through connecting line 12 and is connected with throttle control 1, torque speed sensor 3, pressure transducer 6 and proportional pressure control valve 7.
The working principle that this application example is used is described as follows:
Hydraulic circuit: hydraulic oil after the second hydraulic oil pipe 9 enters oil hydraulic pump 4, enters proportional pressure control valve 7 through oil hydraulic pump 4 superchargings by the first hydraulic oil pipe 5 from fuel tank 8, then flows back to fuel tank 8 through proportional pressure control valve 7 by the 3rd hydraulic oil pipe 13; Can carry out cooling to hydraulic oil at increase condenser between the first hydraulic oil pipe 9 and fuel tank 8 according to the test needs.
working procedure: the instruction of sending according to microprocessor 10, operation by throttle control 1 control engine 2, and drive oil hydraulic pump 4 through torque speed sensor 3, oil hydraulic pump 4 sucks hydraulic oil by the second hydraulic oil pipe 9 from fuel tank 8, hydraulic oil after oil hydraulic pump 4 pressurization from its oil outlet first hydraulic oil pipe 5 of flowing through successively, enter proportional pressure control valve 7 after pressure transducer 6, instruction control ratio relief valve 7 apertures that proportional pressure control valve 7 sends according to controller 10, thereby change the power that oil pressure and oil hydraulic pump 4 absorption motor 2 outputs of oil hydraulic pump 4, simultaneously, microprocessor 10 is by torque speed sensor 3, pressure transducer 6 obtains respectively the power output information of motor 2 and the hydraulic oil output information of oil hydraulic pump 4, feed back to and control computer 11, the load simulation of realization to engineering machinery, moment of torsion and rotating speed that described power output information is power source, hydraulic pressure output information are the pressure of the oil outlet of oil hydraulic pump,
This system can arrange different test parameters and simulate various working.Operating mode has heavy duty, economy and three kinds of operating modes of underloading according to the excavator operation pattern; Test parameters mainly refers to oil pressure, the flow parameter from the Engine torque that gathers in the excavator actual job, rotating speed or oil hydraulic pump output, and for verification experimental verification motor or hydraulic pump works ability and artificial above-mentioned each parameter that arranges; By microprocessor and control computer system is controlled, realize the accurate simulation to the fluid power load of the dynamic load of motor 2 and oil hydraulic pump 4.
As shown in Figure 3, be the analog result of the utility model job load, as can be seen from the figure the sampling of this bench simulation curve and real vehicle is basically identical, and effectively having proved should simulation and validity and the accuracy of test system and method.
this application example has realized that not only test room's stand of the engine power load in the actual job process and oil hydraulic pump fluid power loading condition to engineering machinery accurately simulates, also realized simultaneously the accurate simulation of multiple special operation operating mode and work pattern, as shown in Figure 4, be the utility model impact and prominent analog result figure when unloading situation in loading process, as can be seen from the figure, this bench simulation load curve is basically identical with the actual curve of setting load, except fictitious load except slightly having time-delay, loading procedure with load be set be close to consistent, its loading error rate is less than 0.5%, illustrate that this system and method has improved the precision of testing experiment, conformity, reproducibility and test efficiency and Economy.
Should be noted that, just an application example major component of the present utility model being described of above example explanation all do not explain as the complementary parts as system such as the correlation engine running state in the example practical application and environment information acquisition.Simultaneously, this application example is a case of the present utility model, rather than limits application area of the present utility model or field.
Claims (3)
1. an engineering machinery load is simulated and test system, it is characterized in that: this system comprises power source, throttle control, torque speed sensor, oil hydraulic pump, pressure flow collecting unit, proportional pressure control valve, microprocessor and controls computer;
Described pressure flow collecting unit comprises a kind of in pressure transducer or flow transducer at least;
Described torque speed sensor two ends connect with power source and oil hydraulic pump respectively;
The mounting point of described pressure transducer is arbitrary position between the filler opening of oil hydraulic pump oil outlet and proportional pressure control valve, and the mounting point of described flow transducer is in arbitrary position between the filler opening of oil hydraulic pump oil outlet and proportional pressure control valve or between proportional pressure control valve oil outlet and tank drainback mouth;
Described proportional pressure control valve filler opening is connected by the first hydraulic oil pipe with the oil hydraulic pump oil outlet;
Described proportional pressure control valve oil outlet and oil hydraulic pump filler opening respectively by the 3rd hydraulic oil pipe be connected hydraulic oil pipe and be connected with fuel tank;
Described microprocessor all is connected with rotary speed torque sensor, pressure flow collecting unit, throttle control and proportional pressure control valve;
Described control computer is connected with microprocessor.
2. engineering machinery load according to claim 1 simulation and test system, is characterized in that, described oil hydraulic pump comprises M pump unit, and described pump unit comprises N main pump and/or pioneer pump, and M and N are the integer more than or equal to 1.
3. the simulation of the described engineering machinery load of any one and test system according to claim 1 and 2, is characterized in that, described power source comprises a kind of in the middle of diesel engine, petrol engine and motor at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601036 CN202926757U (en) | 2012-11-14 | 2012-11-14 | Load simulation and test system of engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601036 CN202926757U (en) | 2012-11-14 | 2012-11-14 | Load simulation and test system of engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926757U true CN202926757U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601036 Withdrawn - After Issue CN202926757U (en) | 2012-11-14 | 2012-11-14 | Load simulation and test system of engineering machine |
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| Country | Link |
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| CN (1) | CN202926757U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966628A (en) * | 2012-11-14 | 2013-03-13 | 山河智能装备股份有限公司 | Load simulating and testing system and method for engineering machinery |
| CN103759946A (en) * | 2013-12-30 | 2014-04-30 | 天津雷沃动力有限公司 | Testing device for testing PTO output capacity of engine |
| CN104500469A (en) * | 2015-01-05 | 2015-04-08 | 戴纳派克（中国）压实摊铺设备有限公司 | Engineering machine engine loading system and engineering machine |
| CN104563856A (en) * | 2015-01-15 | 2015-04-29 | 山河智能装备股份有限公司 | Quick soil throwing control system for rotary drilling rig |
| CN109883744A (en) * | 2019-02-22 | 2019-06-14 | 柳州北斗星液压科技有限公司 | A kind of device and method for excavator thermal equilibrium analysis |
-
2012
- 2012-11-14 CN CN 201220601036 patent/CN202926757U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966628A (en) * | 2012-11-14 | 2013-03-13 | 山河智能装备股份有限公司 | Load simulating and testing system and method for engineering machinery |
| CN102966628B (en) * | 2012-11-14 | 2015-01-21 | 山河智能装备股份有限公司 | Load simulating and testing system and method for engineering machinery |
| CN103759946A (en) * | 2013-12-30 | 2014-04-30 | 天津雷沃动力有限公司 | Testing device for testing PTO output capacity of engine |
| CN104500469A (en) * | 2015-01-05 | 2015-04-08 | 戴纳派克（中国）压实摊铺设备有限公司 | Engineering machine engine loading system and engineering machine |
| CN104563856A (en) * | 2015-01-15 | 2015-04-29 | 山河智能装备股份有限公司 | Quick soil throwing control system for rotary drilling rig |
| CN109883744A (en) * | 2019-02-22 | 2019-06-14 | 柳州北斗星液压科技有限公司 | A kind of device and method for excavator thermal equilibrium analysis |
| CN109883744B (en) * | 2019-02-22 | 2021-05-07 | 柳州北斗星液压科技有限公司 | Device and method for analyzing thermal balance of excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20150121 |
|
| RGAV | Abandon patent right to avoid regrant |