CN102352879A - Fatigue test system for hydraulic oil tank for engineering machinery - Google Patents
Fatigue test system for hydraulic oil tank for engineering machinery Download PDFInfo
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- CN102352879A CN102352879A CN201110282082XA CN201110282082A CN102352879A CN 102352879 A CN102352879 A CN 102352879A CN 201110282082X A CN201110282082X A CN 201110282082XA CN 201110282082 A CN201110282082 A CN 201110282082A CN 102352879 A CN102352879 A CN 102352879A
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- hydraulic oil
- pressure
- oil container
- test system
- engineering machinery
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Abstract
The invention discloses a fatigue test system for a hydraulic oil tank for engineering machinery, which comprises a pressure loading unit, a control unit and an observation unit, wherein the pressure loading unit comprises a plurality of air pumps and a plurality of pressure reducing valves of which the number is equal to that of the air pumps. The control unit comprises a controller and a reversing valve, wherein the controller is used for outputting an excitation signal, the reversing valve is used for controlling direction turning, and the controller and the reversing valve are connected in sequence. The air pumps and the pressure reducing valves are connected with the reversing valve after being connected in the manner of one-to-one correspondence; the pressure reducing valves are communicated with the hydraulic oil tank through the reversing valve; and the output signal sent out by the controller comprises at least one positive direction wave and one negative direction wave so as to generate alternating pressure in the hydraulic oil tank. The single machine of the fatigue test system for the hydraulic oil tank for the engineering machinery can realize regulation on test parameters, such as test pressure, fatigue frequency and the like and operation on the control unit. The fatigue test system for the hydraulic oil tank for the engineering machinery has a simple structure, easiness in operation, low energy consumption and high reliability, can simulate actual conditions in short time and is used for performing anti-alternating pressure fatigue testing on the hydraulic oil tank to estimate the fatigue life of the hydraulic oil tank to be tested.
Description
Technical field
The present invention relates to engineering machinery with hydraulic oil container fatigue test technical field, relate in particular to a kind of engineering machinery hydraulic oil container fatigue test system.
Background technique
When engineering machinery was worked with hydraulic oil container, tank pressure can change, and fuel tank is influenced by alternating pressure, and fatigue deformation or cracking can take place.Do not have a kind of test system can simulate actual conditions at short notice at present,, assess the fatigue life of tested hydraulic oil container through hydraulic oil container being carried out the Fatigue test of anti-alternating pressure.
Summary of the invention
Problem to above-mentioned existence; The purpose of this invention is to provide a kind of engineering mechanical hydraulic oil case fatigue test system; Can simulate actual conditions at short notice, hydraulic oil container is carried out the Fatigue test of anti-alternating pressure, assess the fatigue life of tested hydraulic oil container.
The objective of the invention is to realize through following technical proposals:
A kind of engineering machinery hydraulic oil container fatigue test system; Be used to assess the fatigue life of hydraulic oil container; Wherein, By the pressure-loaded unit; Control unit and observation unit are formed; Said pressure-loaded unit comprises some air pumps; And the quantity some reduction valve identical with said some air pumps; Said control unit comprises the controller of the output drive signal that connects successively and the selector valve of control direction conversion; Said some air pumps connect one to one with said some reduction valve and then are connected with said selector valve; Said some reduction valve are communicated with said hydraulic oil container through said selector valve; Said observation unit is located on the said hydraulic oil container, is used to show the wherein force value of hydraulic oil; At least comprise one tunnel postive direction ripple and one tunnel negative direction ripple in the output signal that said controller sends, produce alternating pressure to be implemented in the said hydraulic oil container.
Above-mentioned engineering machinery hydraulic oil container fatigue test system, wherein, said observation unit is a pressure gauge.
Above-mentioned engineering machinery hydraulic oil container fatigue test system, wherein, said some air pumps are two, and said some reduction valve also are two, and the output signal that said controller sends is a square-wave and a negative direction ripple.
Above-mentioned engineering machinery hydraulic oil container fatigue test system, wherein, said selector valve is a two-position three-way valve.
Above-mentioned engineering machinery hydraulic oil container fatigue test system; Wherein, when the output signal that sends when said controller was the postive direction ripple, said selector valve was in the malleation aerating position; When the output signal that sends when said controller was the negative direction ripple, said selector valve was in the negative inspiratory pressure position.
Compared with the prior art, beneficial effect of the present invention is:
Perfect function, unit can realize that test parameters such as test pressure, tired frequency are regulated and the control unit operation; It is simple in structure, and is easy to operate, and energy consumption is little, reliability is high, can simulate actual conditions at short notice, and hydraulic oil container is carried out the Fatigue test of anti-alternating pressure, assesses the fatigue life of tested hydraulic oil container.
Description of drawings
Fig. 1 is the system architecture schematic representation of engineering machinery of the present invention with the optimum embodiment of hydraulic oil container fatigue test system.
Embodiment
Below in conjunction with schematic diagram and the optimum embodiment of specific operation the present invention is described further.
As shown in Figure 1; Engineering machinery of the present invention is made up of pressure-loaded unit 1, control unit 2 and observation unit 3 with the hydraulic oil container fatigue test system; Pressure-loaded unit 1 comprises some reduction valve 12 that some air pumps 11 and quantity and some air pumps 11 are identical; Control unit 2 comprises the controller 21 of the output drive signal that connects successively and the selector valve 22 of control direction conversion; Some air pumps 11 connect one to one with some reduction valve 12 and then are connected with selector valve 22, and some reduction valve 21 are communicated with hydraulic oil container 0 through selector valve 22.Observation unit 3 is specially pressure gauge, is located on the hydraulic oil container 0, is used to show the wherein force value of hydraulic oil, comprises one tunnel postive direction ripple and one tunnel negative direction ripple in the output signal that controller 21 sends at least, produces alternating pressure to be implemented in the hydraulic oil container 0.
In the present embodiment, some air pumps 11 are two, and some reduction valve 12 also are two, and the output signal that controller 21 sends is a square-wave and a negative direction ripple, and selector valve 22 is a two-position three-way valve, specifically can select according to actual needs.When the output signal that sends when controller 21 was the postive direction ripple, selector valve 22 was in the malleation aerating position, and when the output signal that sends when controller 21 was the negative direction ripple, selector valve 22 was in the negative inspiratory pressure position.
When making an experiment; Open the source of the gas of pressure-loaded unit 1; Open the controller 21 in the control unit 2 simultaneously, the output signal of adjusting color controls 21 is specially the output time of regulating postive direction ripple and negative direction ripple; Regulate the loading alternating pressure of reduction valve 12 simultaneously; So pressure arrives hydraulic oil container 0 through selector valve 22, the pressure in the hydraulic oil container 0 changes between required alternating pressure, reads the pressure value on the pressure gauge 3; The different force value of sampling is noted, and writes down number of times simultaneously.
More than specific embodiment of the present invention is described in detail, but the present invention is not restricted to the specific embodiment of above description, it is just as example.To those skilled in the art, any equivalent modifications that this project machinery is carried out with the hydraulic oil container fatigue test system with alternative also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of having done under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (5)
1. engineering machinery hydraulic oil container fatigue test system; Be used to assess the fatigue life of hydraulic oil container; It is characterized in that; By the pressure-loaded unit; Control unit and observation unit are formed; Said pressure-loaded unit comprises some air pumps; And the quantity some reduction valve identical with said some air pumps; Said control unit comprises the controller of the output drive signal that connects successively and the selector valve of control direction conversion; Said some air pumps connect one to one with said some reduction valve and then are connected with said selector valve; Said some reduction valve are communicated with said hydraulic oil container through said selector valve; Said observation unit is located on the said hydraulic oil container, is used to show the wherein force value of hydraulic oil; At least comprise one tunnel postive direction ripple and one tunnel negative direction ripple in the output signal that said controller sends, produce alternating pressure to be implemented in the said hydraulic oil container.
2. engineering machinery hydraulic oil container fatigue test system according to claim 1 is characterized in that said observation unit is a pressure gauge.
3. engineering machinery hydraulic oil container fatigue test system according to claim 1 is characterized in that said some air pumps are two, and said some reduction valve also are two, and the output signal that said controller sends is a square-wave and a negative direction ripple.
4. engineering machinery hydraulic oil container fatigue test system according to claim 3 is characterized in that said selector valve is a two-position three-way valve.
5. engineering machinery hydraulic oil container fatigue test system according to claim 4; It is characterized in that; When the output signal that sends when said controller is the postive direction ripple; Said selector valve is in the malleation aerating position; When the output signal that sends when said controller was the negative direction ripple, said selector valve was in the negative inspiratory pressure position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282082 CN102352879B (en) | 2011-09-22 | 2011-09-22 | Fatigue test system for hydraulic oil tank for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282082 CN102352879B (en) | 2011-09-22 | 2011-09-22 | Fatigue test system for hydraulic oil tank for engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102352879A true CN102352879A (en) | 2012-02-15 |
| CN102352879B CN102352879B (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110282082 Expired - Fee Related CN102352879B (en) | 2011-09-22 | 2011-09-22 | Fatigue test system for hydraulic oil tank for engineering machinery |
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| CN (1) | CN102352879B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547682A (en) * | 2016-01-18 | 2016-05-04 | 柳州市嘉诚汽车饰件系统有限公司 | Positive and negative pressure endurance testing tool for oil tank |
| CN110439881A (en) * | 2019-08-22 | 2019-11-12 | 上海三一重机股份有限公司 | A kind of CYCLIC LOADING control device and method |
| CN111982723A (en) * | 2020-07-22 | 2020-11-24 | 中联重科股份有限公司 | Pressure vessel pulse fatigue test device |
| CN113295394A (en) * | 2021-05-21 | 2021-08-24 | 上海三一重机股份有限公司 | Gas pressure circulation testing method and device |
| CN114414183A (en) * | 2021-12-29 | 2022-04-29 | 徐州徐工挖掘机械有限公司 | Hydraulic oil tank weld seam durability test device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189501A (en) * | 1995-01-11 | 1996-07-23 | Shin Caterpillar Mitsubishi Ltd | Hydraulic motor driving circuit |
| CN2903522Y (en) * | 2006-03-16 | 2007-05-23 | 靖江宝骊叉车有限公司 | Single acting oil cylinder routine testing apparatus |
| CN101865168A (en) * | 2010-06-22 | 2010-10-20 | 三一重工股份有限公司 | Hydraulic system and engineering machine with same |
| CN101881288A (en) * | 2010-06-29 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder durability test method and device |
| CN102174940A (en) * | 2011-03-01 | 2011-09-07 | 安徽淮化股份有限公司 | Gas making furnace oil pressure system with detection function |
-
2011
- 2011-09-22 CN CN 201110282082 patent/CN102352879B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189501A (en) * | 1995-01-11 | 1996-07-23 | Shin Caterpillar Mitsubishi Ltd | Hydraulic motor driving circuit |
| CN2903522Y (en) * | 2006-03-16 | 2007-05-23 | 靖江宝骊叉车有限公司 | Single acting oil cylinder routine testing apparatus |
| CN101865168A (en) * | 2010-06-22 | 2010-10-20 | 三一重工股份有限公司 | Hydraulic system and engineering machine with same |
| CN101881288A (en) * | 2010-06-29 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder durability test method and device |
| CN102174940A (en) * | 2011-03-01 | 2011-09-07 | 安徽淮化股份有限公司 | Gas making furnace oil pressure system with detection function |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547682A (en) * | 2016-01-18 | 2016-05-04 | 柳州市嘉诚汽车饰件系统有限公司 | Positive and negative pressure endurance testing tool for oil tank |
| CN110439881A (en) * | 2019-08-22 | 2019-11-12 | 上海三一重机股份有限公司 | A kind of CYCLIC LOADING control device and method |
| CN110439881B (en) * | 2019-08-22 | 2021-06-29 | 上海三一重机股份有限公司 | Cyclic loading control device and method |
| CN111982723A (en) * | 2020-07-22 | 2020-11-24 | 中联重科股份有限公司 | Pressure vessel pulse fatigue test device |
| CN113295394A (en) * | 2021-05-21 | 2021-08-24 | 上海三一重机股份有限公司 | Gas pressure circulation testing method and device |
| CN113295394B (en) * | 2021-05-21 | 2023-10-31 | 上海三一重机股份有限公司 | Gas pressure circulation test method and device |
| CN114414183A (en) * | 2021-12-29 | 2022-04-29 | 徐州徐工挖掘机械有限公司 | Hydraulic oil tank weld seam durability test device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102352879B (en) | 2013-03-27 |
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