CN102052365A - Test bench for hydraulic excavator pump valve - Google Patents
Test bench for hydraulic excavator pump valve Download PDFInfo
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- CN102052365A CN102052365A CN 201010577072 CN201010577072A CN102052365A CN 102052365 A CN102052365 A CN 102052365A CN 201010577072 CN201010577072 CN 201010577072 CN 201010577072 A CN201010577072 A CN 201010577072A CN 102052365 A CN102052365 A CN 102052365A
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- control valve
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Abstract
The invention discloses a test bench for a hydraulic excavator pump valve, comprising a power mechanism, a hydraulic pump operating platform, a control platform, a pump test platform mechanism, a main control valve test platform mechanism and connecting pipelines. The test bench is characterized in that the power mechanism comprises a variable-frequency motor and a torque sensor, wherein the control end of the variable-frequency motor is connected with the control platform; the signal output end of the torque sensor is connected with the control platform; the pump test platform mechanism comprises two hydraulic pipelines which are connected in parallel; the two hydraulic pipelines are internally and respectively provided with a first hydraulic control device and a second hydraulic control device, output ports of which are connected with an oil tank by a first flow meter; the main control valve test platform mechanism is provided with a hydraulic pipeline for connecting a hydraulic pump and a main control valve to be tested; a second flow meter is arranged in the hydraulic pipelines in series, and the main control valve test platform mechanism further comprises a hydraulic loop connected with the main control valve; and a third adjustable overflow valve and a third flow meter are connected in the hydraulic loop in series. The test bench disclosed by the invention can be convenient to carry out comprehensive test on the pump valve.
Description
Technical field
The present invention relates to a kind of testing apparatus, be specifically related to a kind of test-bed that is used for hydraulic shovel oil hydraulic pump and main valve.
Background technique
Continuous development along with science and technology, in engineering fields such as building, water conservancies, all kinds of construction planies begin to be used widely, such as excavator, hoist, bulldozer or the like, the construction plant that this class is used for engineering construction is referred to as engineering machinery, and is wherein especially comparatively general with the use of excavator.The main purpose of excavator is a digging material and transfer to the emptying point from the face of land, go back to excavation site after the discharging again, repeat, the excavator that generally uses is a hydraulic shovel at present, have construction maneuverability, advantage that efficient is high, thereby be widely used in occasions such as the foundation dredging of building construction and the cleaning after the completion, urban duct laying, construction of water conservancy works.Hydraulic shovel generally is made up of several parts such as equipment, swivel gear, traveling gear and hydraulic systems, and swivel gear and traveling gear are the bodies of excavator, and equipment is transferred on swivel gear, and swivel gear is fixed on the underframe of traveling gear.
For hydraulic shovel, hydraulic system is the core of excavator, directly determined the performance of excavator, the power loss when the correct selection of hydraulic system medium power element oil hydraulic pump can reduce " motor-oil hydraulic pump " coupling improves power character and fuel economy.The control unit hydrovalve can be realized action interflow, walking straight line, action priority scheduling function in the hydraulic system, and correct coupling can reduce duct pressure loss in the oil circuit, leakage loss etc.Therefore the correct selection of oil hydraulic pump and main control valve and coupling play crucial effects to the performance of excavator, promote the performance of excavator, need to understand the characteristic of oil hydraulic pump and main control valve, want and to test the main performance of pump and valve by test, accurately carry out the coupling of pump valve, yet a comprehensive testing apparatus can not tested and regulate the oil hydraulic pump and the control valve of excavator at present.
Summary of the invention
The object of the invention provides a kind of test-bed that is used for the hydraulic shovel pump valve, uses this device, can test adjusting to oil hydraulic pump and main control valve easily.
For achieving the above object, the technical solution used in the present invention is: a kind of test-bed that is used for the hydraulic shovel pump valve, comprise power mechanism, the oil hydraulic pump operating table of oil hydraulic pump to be measured is installed, operating console, pump testing platform mechanism, the main control valve test stand mechanism of main control valve to be measured is installed and connects each inter-agency pipeline, it is characterized in that: described power mechanism comprises a variable-frequency motor and the torque sensor that is connected with the variable-frequency motor output terminal, described variable-frequency motor control end is connected with described operating console, and described torque sensor signal output terminal is connected with described operating console;
Described pump testing platform mechanism comprises two hydraulic pipe lines of the parallel connection that is connected with oil hydraulic pump to be measured respectively, be respectively equipped with first and second hydraulic control unit in described two hydraulic pipe lines, the delivery outlet of described first and second hydraulic control unit is connected with fuel tank through the first flow meter;
Described main control valve test stand mechanism be provided with connect oil hydraulic pump and with the hydraulic pipe line of main control valve to be measured, string is provided with second flowmeter in the described hydraulic pipe line, also comprise the oil hydraulic circuit that is connected with main control valve to be measured, the 3rd adjustable relief valve, the 3rd flowmeter of connecting successively in the described oil hydraulic circuit.
In the technique scheme, described power mechanism comprises variable-frequency motor and torque sensor, variable-frequency motor is controlled by operating console and is used to provide power, the torque sensor is the detection to the torsional moment perception of variable-frequency motor, the physical change of torsion can be converted to accurate electrical signal and then pass to operating console, operating console can receive data and analyze and reprocessing, described pump testing platform mechanism comprises the hydraulic pipe line of two parallel connections, article two, hydraulic pipe line is connected with oil hydraulic pump to be measured respectively, can be used for connecting single pump or double pump system, be respectively arranged with hydraulic control unit in every pipeline, by hydraulic control unit the output flow that flows out from oil hydraulic pump to be measured is controlled, the delivery outlet of first and second hydraulic control unit flows back to fuel tank behind the first flow meter, the first flow meter is used to detect the output stream value of oil hydraulic pump to be measured, described main control valve test stand is provided with the hydraulic pipe line that is connected with the oil hydraulic pump operating table, this hydraulic pipe line is used to connect main control valve to be measured on the main control valve test stand and the oil hydraulic pump to be measured on the oil hydraulic pump operating table, string is provided with the inlet flow value that second flowmeter is used to detect main control valve to be measured in the pipeline, described the 3rd adjustable relief valve is used to change the delivery pressure of main control valve to be measured, and the 3rd flowmeter is used to detect the output stream value of main control valve to be measured.
Further technological scheme, described first hydraulic control unit comprises first pressure meter, first adjustable relief valve and first solenoid directional control valve of series connection successively, described second hydraulic control unit comprises second pressure meter, second adjustable relief valve and second solenoid directional control valve of series connection successively, and the delivery outlet of described first solenoid directional control valve and second solenoid directional control valve is connected with the first flow meter.Pressure meter is used to detect the delivery pressure of oil hydraulic pump to be measured, by the delivery pressure of adjustable relief valve pressure change oil hydraulic pump to be measured, utilizes solenoid directional control valve to select to flow to wherein a pipeline or the interflow of two pipelines of being of first flow meter.
Further technological scheme, described operating console is connected with the control end of oil hydraulic pump to be measured and main control valve to be measured respectively.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. the present invention is by being provided with power mechanism, oil hydraulic pump operating table, operating console, pump testing platform mechanism, main control valve test stand mechanism, the oil hydraulic pump operating table is used to place oil hydraulic pump to be measured, the main control valve test stand is laid main control valve to be measured, power mechanism is used to provide power, the pump valve test stand is used for oil hydraulic pump is detected, the main control valve test stand detects main control valve, thereby can test also and can test main control valve oil hydraulic pump;
2. the present invention provides power by variable-frequency motor, thereby can satisfy the test requirements document of the excavator pump valve of different tonnages;
3. the present invention is by being provided with two hydraulic pipe lines in pump testing platform mechanism, thereby can test the single pump or the double pump system of excavator;
4. what the present invention can be comprehensive tests pump valve, and use is comparatively simple, is fit to promote the use of.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is structural representation when pump is tested in the embodiment of the invention one;
Fig. 3 is structural representation when main control valve is tested in the embodiment of the invention one.
Wherein: 1, variable-frequency motor; 2, torque sensor; 3, oil hydraulic pump operating table; 4, operating console; 5, first pressure meter; 6, first adjustable relief valve; 7, first solenoid directional control valve; 8, second pressure meter; 9, second adjustable relief valve; 10, second solenoid directional control valve; 11, first flow meter; 12, second flowmeter; 13, the 3rd adjustable relief valve; 14, the 3rd flowmeter; 15, pump testing platform mechanism; 16, main control valve test stand mechanism.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: referring to shown in Fig. 1 to 3, a kind of test-bed that is used for the hydraulic shovel pump valve, comprise power mechanism, the oil hydraulic pump operating table 3 that oil hydraulic pump to be measured is installed, operating console 4, pump testing platform mechanism 15, the main control valve test stand mechanism 16 of main control valve to be measured be installed and connect each inter-agency pipeline, described power mechanism comprises a variable-frequency motor 1 and the torque sensor 2 that is connected with the variable-frequency motor output terminal, described variable-frequency motor 1 control end is connected with described operating console 4, and described torque sensor 2 signal output parts are connected with described operating console 4;
Described pump testing platform mechanism comprises two hydraulic pipe lines that are arranged in parallel that are connected with oil hydraulic pump to be measured respectively, wherein be in series with first pressure meter 5, first adjustable relief valve 6 and first solenoid directional control valve 7 successively in a hydraulic pipe line, second pressure meter 8, second adjustable relief valve 9 and second solenoid directional control valve 10 of connecting successively in another hydraulic pipe line, the delivery outlet of described first solenoid directional control valve 7 and second solenoid directional control valve 10 is connected with first flow meter 11;
Described main control valve test stand mechanism 16 is provided with the hydraulic pipe line that is connected with described oil hydraulic pump operating table, string is provided with second flowmeter 12 in the described hydraulic pipe line, also comprise the oil hydraulic circuit that is connected with main control valve to be measured, the 3rd adjustable relief valve 13, the 3rd flowmeter 14 of connecting successively in the described oil hydraulic circuit.
When carrying out the test of excavator oil hydraulic pump, at first the excavator oil hydraulic pump is installed on the oil hydraulic pump operating table and connects together with variable-frequency motor and torque sensor, with circuit the excavator oil hydraulic pump is linked to each other with operating console with pump valve test stand main body with hydraulic pipe line again, the test of excavator oil hydraulic pump is mainly comprised: the relation curve of test fluid press pump proportional electromagnetic valve input current and output flow and the relation curve of oil hydraulic pump output flow and system pressure.Before testing, at first determining concrete tested object, is to carry out the test of front pump or back pump separately or carry out the test at double pump interflow, controls first solenoid directional control valve and second solenoid directional control valve can be realized by operating console output electrical signal.Behind the confirmed test object, regulate the rotating speed that the rotating speed of variable-frequency motor is used for simulating the various operating modes of excavator by operating console, utilize the certain current value of operating console output to simulate the input value of excavator oil hydraulic pump proportional electromagnetic valve electric current in practical work process, when different current signals are imported, by first-class flowmeter measurement system flow value.Insert signal sampler at operating console and just can gather, and image data is handled, just can export the relation curve of oil hydraulic pump output flow and proportional electromagnetic valve input current first flow instrumentation value and current signal.Test to the relation curve of oil hydraulic pump output flow and system pressure, main front and back pump delivery pressure by first adjustable relief valve and second adjustable relief valve change excavator oil hydraulic pump is simulated the system pressure in the excavator actual conditions, by the flow of first flow instrumentation test system, insert data collecting instrument can be exported oil hydraulic pump output flow and system pressure to the flux signal collection of the system pressure signal of first pressure meter and second manometry and first-class flowmeter measurement relation curve again.In test process, utilize torque sensor can measure the input torque of excavator oil hydraulic pump, can recognize the situation of change of oil hydraulic pump input torque in the test process.Can also detect and keep in repair the excavator oil hydraulic pump by the performance curve of measuring the excavator oil hydraulic pump.
When carrying out the test of excavator main control valve, at first supporting excavator oil hydraulic pump is installed to the oil hydraulic pump operating table, the excavator main control valve is installed on the main control valve operating table, utilize hydraulic pipe line that excavator oil hydraulic pump, excavator main control valve and other elements are connected together again, testing property to the excavator main control valve, mainly be under constant input flow rate, the valve core opening pressure of test excavator main control valve and the relation curve of main control valve output flow.The excavator main control valve is tested, at first will be according to the state in the main valve real work, regulating the rotating speed of variable-frequency motor and the Proportional valve electric current of excavator oil hydraulic pump makes the hydraulic oil (can gather excavator oil hydraulic pump output flow by second flowmeter) of excavator oil hydraulic pump output flow setting type enter the excavator main control valve, export the valve core opening end of certain pilot pressure by operating console then to the excavator main control valve, utilize the 3rd flowmeter that the output flow of excavator main control valve is measured, insert signal sampler the signal of the 3rd flow measurement value and valve core opening pressure is gathered, just can export the valve core opening pressure of excavator main control valve and the relation curve of control valve output flow.Can change the system pressure of excavator main control valve by the 3rd adjustable relief valve in the main control valve test stand mechanism, the load of excavator main control valve under the different operating modes of simulation excavator, the flow system flow that can test under the different loads just can be exported and the performance curve of drawing the different spools of excavator main control valve.
Claims (3)
1. test-bed that is used for the hydraulic shovel pump valve, comprise power mechanism, the oil hydraulic pump operating table (3) of oil hydraulic pump to be measured is installed, operating console (4), pump testing platform mechanism (15), the main control valve test stand mechanism (16) of main control valve to be measured is installed and connects each inter-agency pipeline, it is characterized in that: described power mechanism comprises a variable-frequency motor (1) and the torque sensor (2) that is connected with the variable-frequency motor output terminal, described variable-frequency motor (1) control end is connected with described operating console (4), and described torque sensor (2) signal output part is connected with described operating console (4);
Described pump testing platform mechanism (15) comprises two hydraulic pipe lines of the parallel connection that is connected with oil hydraulic pump to be measured respectively, be respectively equipped with first and second hydraulic control unit in described two hydraulic pipe lines, the delivery outlet of described first and second hydraulic control unit is connected with fuel tank through first flow meter (11);
Described main control valve test stand mechanism (16) be provided with connect oil hydraulic pump and with the hydraulic pipe line of main control valve to be measured, string is provided with second flowmeter (12) in the described hydraulic pipe line, also comprise the oil hydraulic circuit that is connected with main control valve to be measured, the 3rd adjustable relief valve (13), the 3rd flowmeter (14) of connecting successively in the described oil hydraulic circuit.
2. a kind of test-bed that is used for the hydraulic shovel pump valve according to claim 1, it is characterized in that: described first hydraulic control unit comprises first pressure meter (5), first adjustable relief valve (6) and first solenoid directional control valve (7) of series connection successively, described second hydraulic control unit comprises second pressure meter (8), second adjustable relief valve (9) and second solenoid directional control valve (10) of series connection successively, and the delivery outlet of described first solenoid directional control valve (7) and second solenoid directional control valve (10) is connected with the first flow meter.
3. a kind of test-bed that is used for the hydraulic shovel pump valve according to claim 1 is characterized in that: described operating console (4) is connected with the control end of oil hydraulic pump to be measured and main control valve to be measured respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010577072 CN102052365B (en) | 2010-12-07 | 2010-12-07 | Test bench for hydraulic excavator pump valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010577072 CN102052365B (en) | 2010-12-07 | 2010-12-07 | Test bench for hydraulic excavator pump valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052365A true CN102052365A (en) | 2011-05-11 |
| CN102052365B CN102052365B (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010577072 Expired - Fee Related CN102052365B (en) | 2010-12-07 | 2010-12-07 | Test bench for hydraulic excavator pump valve |
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| Country | Link |
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| CN (1) | CN102052365B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606558A (en) * | 2012-02-08 | 2012-07-25 | 北京首钢重型汽车制造股份有限公司 | Test bench for hydraulic system of mining dumper |
| CN104454791A (en) * | 2014-12-05 | 2015-03-25 | 宁波恒力液压股份有限公司 | Parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves |
| CN109540501A (en) * | 2019-01-29 | 2019-03-29 | 福建江夏学院 | It is a kind of for testing the integrated testing stand of guide's pump valve and its working method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1652687A1 (en) * | 1987-08-21 | 1991-05-30 | Одесское Производственное Объединение По Производству Гидрооборудования И Гидроавтоматики Для Строительных И Дорожных Машин "Стройгидравлика" | Hydraulic systems of test beds |
| JP2005344818A (en) * | 2004-06-02 | 2005-12-15 | Hitachi Constr Mach Co Ltd | Hydraulic device for construction machine |
| CN2760316Y (en) * | 2004-11-26 | 2006-02-22 | 北京农业信息技术研究中心 | Mobile hydraulic test bench with adjustable pressure and flow |
| CN101598159A (en) * | 2009-06-19 | 2009-12-09 | 杨成刚 | Portable active hydraulic tester and test method |
| CN201363337Y (en) * | 2008-12-30 | 2009-12-16 | 上海御能动力科技有限公司 | Electric-hydraulic servo control test platform |
| CN201475088U (en) * | 2009-08-04 | 2010-05-19 | 泉州市麦格士液压技术有限公司 | Novel hydraulic test bench |
-
2010
- 2010-12-07 CN CN 201010577072 patent/CN102052365B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1652687A1 (en) * | 1987-08-21 | 1991-05-30 | Одесское Производственное Объединение По Производству Гидрооборудования И Гидроавтоматики Для Строительных И Дорожных Машин "Стройгидравлика" | Hydraulic systems of test beds |
| JP2005344818A (en) * | 2004-06-02 | 2005-12-15 | Hitachi Constr Mach Co Ltd | Hydraulic device for construction machine |
| CN2760316Y (en) * | 2004-11-26 | 2006-02-22 | 北京农业信息技术研究中心 | Mobile hydraulic test bench with adjustable pressure and flow |
| CN201363337Y (en) * | 2008-12-30 | 2009-12-16 | 上海御能动力科技有限公司 | Electric-hydraulic servo control test platform |
| CN101598159A (en) * | 2009-06-19 | 2009-12-09 | 杨成刚 | Portable active hydraulic tester and test method |
| CN201475088U (en) * | 2009-08-04 | 2010-05-19 | 泉州市麦格士液压技术有限公司 | Novel hydraulic test bench |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606558A (en) * | 2012-02-08 | 2012-07-25 | 北京首钢重型汽车制造股份有限公司 | Test bench for hydraulic system of mining dumper |
| CN102606558B (en) * | 2012-02-08 | 2014-12-24 | 北京首钢重型汽车制造股份有限公司 | Test bench for hydraulic system of mining dumper |
| CN104454791A (en) * | 2014-12-05 | 2015-03-25 | 宁波恒力液压股份有限公司 | Parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves |
| CN109540501A (en) * | 2019-01-29 | 2019-03-29 | 福建江夏学院 | It is a kind of for testing the integrated testing stand of guide's pump valve and its working method |
| CN109540501B (en) * | 2019-01-29 | 2020-07-10 | 福建江夏学院 | Test bed for testing pilot pump valve integration and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN102052365B (en) | 2013-04-24 |
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