CN115824818A - Common rail pipe fatigue test device - Google Patents
Common rail pipe fatigue test device Download PDFInfo
- Publication number
- CN115824818A CN115824818A CN202211292561.4A CN202211292561A CN115824818A CN 115824818 A CN115824818 A CN 115824818A CN 202211292561 A CN202211292561 A CN 202211292561A CN 115824818 A CN115824818 A CN 115824818A
- Authority
- CN
- China
- Prior art keywords
- pressure
- pipe
- common rail
- oil
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009661 fatigue test Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a common rail pipe fatigue testing device which comprises a loading box, wherein a partition plate is arranged in the loading box to divide the loading box into a detection cavity and an oil cavity, the detection cavity is provided with a pressure detection mechanism, and the oil cavity is filled with test oil; the clamping mechanism comprises two clamping shells, the two clamping shells are connected with the base in a sliding mode respectively, the two clamping shells penetrate through and are fixedly provided with filling pipes respectively, the filling pipe of one clamping shell is communicated with the detection cavity, the filling pipe of the other clamping shell is communicated with the oil cavity, and test oil contained in the test oil is output through the filling pipes through a power mechanism arranged in the oil cavity. The common rail pipe pressure resistance and fatigue testing device is simple in structure, high-pressure testing oil is output to the common rail pipe through the loading box, pressure change information is detected through the pressure sensor in the loading box, pressure resistance and fatigue testing of the common rail pipe are achieved, different pressure testing fatigue strengths can be applied to the common rail pipe through the loading mechanism, and testing results are reliable.
Description
Technical Field
The invention belongs to the field of diesel engine common rail pipe fatigue detection, and particularly relates to a common rail pipe fatigue testing device.
Background
The common rail system is a closed-loop fuel supply system which is formed by sucking diesel oil from an oil tank by a gear pump, passing through an oil-water separator, passing through the gear pump, passing through a diesel oil fine filter, passing through a high-pressure pump, a common rail pipe and an oil sprayer, and forming a sensor and an ECU (electronic control unit). The common rail pipe is the part of the common rail system that is primarily subjected to high pressure. Because the change of fuel feeding, the intraductal pressure of common rail is constantly changeable for the intraductal high-pressure chamber of common rail needs the effect that receives the extrusion force that changes for a long time, in order to guarantee the normal use of common rail pipe, need carry out the anti pressure fatigue strength test to its inside high-pressure chamber.
The existing fatigue testing machine is complex in structure, the pressure used for the compression resistance and fatigue testing of the common rail pipe is constant pressure, namely compression resistance fatigue detection is carried out on the common rail pipe under certain pressure, and meanwhile, the change speed of the pressure in the loading process cannot be adjusted, so that the testing result is unreliable.
Disclosure of Invention
In view of this, the present invention provides a common rail pipe fatigue testing apparatus, so as to provide a simple and easy-to-operate apparatus for implementing compression resistance and fatigue testing of a common rail pipe, and simultaneously, different pressures can be applied to the common rail pipe, thereby improving the accuracy of the testing result.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a common rail pipe fatigue testing apparatus comprising:
the loading box is internally provided with a partition plate, the partition plate divides the internal space of the loading box into a detection cavity and an oil cavity, the detection cavity is provided with a pressure detection mechanism, and the oil cavity is filled with test oil;
the clamping mechanism comprises two clamping shells which are right opposite to each other and are arranged on the base respectively, the clamping shells and the base are in sliding connection respectively, the two clamping shells penetrate through and are fixedly provided with filling pipes respectively, the filling pipe of one clamping shell is communicated with the detection cavity through a pressure conduction pipe, the filling pipe of the other clamping shell is communicated with the oil cavity through the pressure filling pipe, and the test oil contained in the clamping shell is output through the pressure filling pipe through a power mechanism arranged in the oil cavity.
Furthermore, the pressure detection mechanism comprises a pressure sensor at one end of the detection cavity and a movable pressing plate movably arranged in the detection cavity, the inner end face of the movable pressing plate is abutted to the detection contact of the pressure sensor, and the detection cavity is connected with the pressure conduction pipe through a connector and is arranged at the other end of the detection cavity.
Further, a spring telescopic rod is fixedly mounted on the outer end face of the movable pressing plate, a pressure-bearing piston plate is fixedly mounted on the outer end of the spring telescopic rod, a limiting plate is fixedly mounted on the side wall of the loading box, and the limiting plate is located between the pressure-bearing piston plate and the movable pressing plate.
Furthermore, the power mechanism comprises a hydraulic push rod arranged on the partition plate, the hydraulic push rod is provided with a pressurizing piston plate, and the connecting port of the oil cavity and the pressure injection pipe is arranged opposite to the pressurizing piston plate.
Further, this common rail pipe fatigue test device still includes loading mechanism, loading mechanism includes the install bin, the oil pocket intercommunication of communicating pipe and loading case is passed through to install bin one end, the install bin other end is provided with the electro-magnet, and this install bin internalization is provided with piston push pedal and support ring, the support ring just is setting up for metal support ring and electro-magnet, the piston push pedal passes through compression spring and installs on the support ring.
Furthermore, the filling pipe is provided with external threads, penetrates through the corresponding base and is provided with locking nuts at two side parts of the base respectively;
the pressure conduction pipe and the pressure injection pipe are respectively hoses.
Compared with the prior art, the common rail pipe fatigue testing device has the following advantages:
(1) The common rail pipe pressure resistance and fatigue detection device is simple in structure, the common rail pipe is clamped through the clamping shell, high-pressure test oil is output to the common rail pipe through the loading box, the high-pressure state is kept, and pressure change information is detected through the pressure sensor in the loading box, so that the common rail pipe pressure resistance and fatigue detection is realized. The loading mechanism can apply different pressures to the common rail pipe to test the fatigue strength, so that the test result is reliable.
(2) According to the invention, the outer thread is formed on the outer side wall of the filling pipe and matched with the two locking nuts, so that the distance between the two clamping shells is adjusted, the clamping and fixing requirements of common rail pipes with different lengths are met, the common rail pipes with different lengths are tested, and the universality of the device is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a fatigue testing apparatus for a common rail pipe according to the present embodiment;
fig. 2 is an internal structure diagram of a common rail fatigue testing apparatus according to the present embodiment;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 4 is an enlarged schematic view of a portion B in fig. 2.
Description of reference numerals:
1. supporting the frame plate; 2. a loading box; 3. installing a box; 4. a control panel; 5. a pressure conducting tube; 6. a quick connector; 7. an electromagnet; 8. a communicating pipe; 9. a piston push plate; 10. filling a pipe; 11. pressing and injecting the pipe; 12. a base; 13. a compression spring; 14. a clamping block; 16. adjusting the screw rod; 17. clamping the housing; 18. a socket; 19. a limiting plate; 20. a spring telescopic rod; 21. moving the pressing plate; 22. a pressure sensor; 23. a partition plate; 24. a hydraulic push rod; 25. a pressure-bearing piston plate; 26. a support ring; 27-a pressurized piston plate; 28-locking nut.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A common rail pipe fatigue testing device is shown in figures 1 and 2 and comprises a loading box 2 arranged on a supporting frame plate 1 and a clamping mechanism used for clamping a common rail pipe.
The loading box 2 is internally provided with a partition plate 23, the partition plate 23 divides the internal space of the loading box 2 into a detection cavity and an oil cavity, the detection cavity is provided with a pressure detection mechanism, and the oil cavity is filled with a test oil cavity and is also provided with a power mechanism for outputting test oil.
The pressure detection mechanism is structurally shown in fig. 3, and comprises a pressure sensor 22 arranged at one end (preferably, the end provided with a partition) of a detection cavity and a movable pressing plate 21 movably arranged in the detection cavity, wherein the inner end surface of the movable pressing plate 21 is abutted with a detection contact of the pressure sensor 22, and the other end of the detection cavity is provided with a connecting port. The outer end face fixed mounting of removal clamp plate 21 has spring telescopic link 20, and the one end fixed mounting of spring telescopic link 20 has pressure-bearing piston plate 25, and fixed mounting has limiting plate 19 on the lateral wall of loading case 2, and limiting plate 19 is located and sets up between pressure-bearing piston plate 25 and the removal clamp plate 21, can play the guard action to pressure sensor 22 through pressure-bearing piston plate 25 and spring telescopic link 20, avoids loading pressure too big to lead to pressure sensor 22 impaired.
The power mechanism comprises a hydraulic pushing rod 24 arranged on the partition plate 23, the hydraulic pushing rod 24 is provided with a pressurizing piston plate 27, and the oil cavity is provided with a connecting port which is opposite to the wall of the cavity of the pressurizing piston plate 27.
The clamping mechanism comprises two clamping shells 17 which are opposite to each other and are respectively arranged on the base 12, as shown in fig. 2, the two clamping shells 17 are respectively connected with the base 12 in a sliding manner, so that the clamping shells 17 can move in the horizontal direction relative to the base, and the distance between the two clamping shells 17 is adjusted. The two clamping shells 17 are respectively fixedly provided with a filling pipe 10 in a penetrating way, the outer ports of the filling pipes 10 of the two clamping shells 17 are provided with quick connectors 6, one quick connector 6 is connected with a pressure conduction pipe 5, the other quick connector 6 is connected with a pressure injection pipe 11, the pressure conduction pipe 5 and the pressure injection pipe 11 are hoses, the pressure conduction pipe 5 is connected with a connector of the detection cavity, and the pressure injection pipe 11 is connected with a connector of the oil cavity. The power mechanism arranged in the oil cavity outputs the contained test oil through the pressure injection pipe 11.
The insertion base 18 is fixedly mounted on the inner side wall of the clamping shell 17, the insertion base 18 is matched with the pipe orifice of the common rail pipe, the two sides of the common rail pipe to be tested can be inserted and connected through the arranged clamping shell 17 and the insertion base 18, and then the arranged filling pipe 10 can stretch into the common rail pipe, so that the filling of the test oil in the common rail pipe is realized. Be provided with a plurality of locking mechanism on the centre gripping shell 17, locking mechanism includes adjusting screw 16, and adjusting screw 16 and filling pipe set up perpendicularly, and centre gripping shell 17 threaded connection, and the one end that adjusting screw 16 extends in the centre gripping shell 17 is equipped with and presss from both sides tight piece 14, presss from both sides tight common rail pipe through pressing from both sides tight piece 14, further improves common rail pipe and presss from both sides tight test state stability.
An external thread is provided on the outer circumferential surface of the fill pipe 10, the fill pipe 10 penetrates the corresponding base 12, and lock nuts 28 are provided on the fill pipe 10 at both side portions of the base 12. The structure can adjust the length of the two ends of the filling pipe 10 extending out of the base 12, namely the filling pipe 10 can move axially, the clamping shell 17 is driven to move relative to the base 12, and the clamping requirements on the common rail pipes with different lengths are met.
This common rail pipe fatigue test device still includes loading mechanism, the structure is shown in fig. 4, including install bin 3, install bin 3 fixed mounting is on the lateral wall of load bin 2, fixed grafting has communicating pipe 8 on the lateral wall of install bin 3, and communicating pipe 8 is linked together with load bin 2 and sets up, fixed mounting has electro-magnet 7 on the installation bin 3 one end lateral wall, just be provided with support ring 26 to electro-magnet 7 in the install bin 3, support ring 26 deviates from the one end of electro-magnet 7 and is connected with piston push pedal 9 through compression spring 13, through starting electro-magnet 7, make electro-magnet 7 attract piston push pedal 9 with the help of magnetic force, then piston push pedal 9 further overcomes compression spring 13's elasticity, make the intraductal test oil pressure of common rail reduce. Be provided with control panel 4 on supporting frame board 1, control panel 4 control electro-magnet 7 intermittent type nature outage, solenoid valve intermittent type nature is to piston push pedal 9 effect to make the reciprocal circulation operation of test oil, realize circulation pressurization, decompression, realize the loading experiment to the high-pressure chamber.
Specifically, the working principle and the operation method of the invention are as follows:
step one, inserting two ports of a common rail pipe to be tested into an inserting connection seat 18 in two clamping shells 17, moving the clamping shells 17 to clamp the common rail pipe, enabling a filling pipe 10 to extend into the common rail pipe, then driving a clamping block 14 to move by rotating an adjusting screw 16, and further clamping and fixing the clamping shells 17 through the clamping blocks 14 which are arranged oppositely;
step two, starting the hydraulic push rod 24 in the loading box 2, and driving the pressurizing piston plate 27 to move by the hydraulic push rod 24, so that the test oil in the loading box 2 is added into the common rail pipe through the pressure injection pipe 11 and keeps a high-pressure state;
thirdly, the pressure applied and held in the common rail pipe is transmitted to the pressure-bearing piston plate 25 through the test oil in the pressure transmission pipe 5, the pressure is transmitted to the pressure sensor 22, and then the pressure is displayed through the control panel 4, so that a user can conveniently check the pressure change;
and step four, the electromagnet 7 is started, so that the electromagnet 7 attracts the piston push plate 9 by means of magnetic force, then the piston push plate 9 further overcomes the elastic force of the compression spring 13, the pressure of the test oil in the common rail pipe is reduced, then the control panel 4 enables the electromagnet 7 to be intermittently powered off, and the elastic force of the compression spring 13 loses the resistance of the magnetic force, so that cyclic pressurization and depressurization are carried out, and the loading experiment of the high-pressure cavity is realized.
The invention can apply different pressures to the common rail pipe to test the fatigue strength, has small equipment volume and more convenient test of small parts, and ensures simple, convenient and quick operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a common rail pipe fatigue test device which characterized in that: the method comprises the following steps:
the loading box (2) is internally provided with a partition plate (23), the partition plate (23) divides the internal space of the loading box (2) into a detection cavity and an oil cavity, the detection cavity is provided with a pressure detection mechanism, and the oil cavity is filled with test oil;
the clamping mechanism comprises two clamping shells (17) which are opposite to each other and are respectively arranged on a base (12), the two clamping shells (17) are respectively in sliding connection with the base (12), the two clamping shells (17) are respectively penetrated through and fixedly provided with filling pipes (10), the filling pipe (10) of one clamping shell (17) is communicated with the detection cavity through a pressure conduction pipe (5), the filling pipe (10) of the other clamping shell (17) is communicated with the oil cavity through a pressure filling pipe (11), and test oil contained in the test oil is output through the pressure filling pipe (11) through a power mechanism arranged in the oil cavity.
2. The common rail pipe fatigue testing device of claim 1, wherein: the pressure detection mechanism comprises a pressure sensor (22) arranged at one end of a detection cavity and a movable pressing plate (21) movably arranged in the detection cavity, the inner end face of the movable pressing plate (21) is abutted to a detection contact of the pressure sensor (22), and the detection cavity is connected with a pressure transmission pipe (5) through a connector and is arranged at the other end of the detection cavity.
3. A common rail pipe fatigue testing apparatus according to claim 2, wherein: the outer end face of the movable pressing plate (21) is fixedly provided with a spring telescopic rod (20), the outer end of the spring telescopic rod (20) is fixedly provided with a pressure-bearing piston plate (25), a limiting plate (19) is fixedly arranged on the side wall of the loading box (2), and the limiting plate (19) is arranged between the pressure-bearing piston plate (25) and the movable pressing plate (21).
4. A common rail pipe fatigue testing apparatus according to claim 1, wherein: the power mechanism comprises a hydraulic push rod (24) arranged on the partition plate (23), the hydraulic push rod (24) is provided with a pressurizing piston plate (27), and the connecting port of the oil cavity and the pressure injection pipe (11) is arranged opposite to the pressurizing piston plate (27).
5. A common rail pipe fatigue testing apparatus according to claim 1, wherein: this common rail pipe fatigue test device still includes loading mechanism, loading mechanism includes install bin (3), the oil pocket intercommunication of communicating pipe (8) and loading case (2) is passed through to install bin (3) one end, install bin (3) other end is provided with electro-magnet (7), and this install bin (3) internalization is provided with piston push pedal (9) and support ring (26), support ring (26) just to setting up with electro-magnet (7) for metal support ring, piston push pedal (9) are installed on support ring (26) through compression spring (13).
6. A common rail pipe fatigue testing apparatus according to claim 1, wherein: the filling pipe (10) is provided with external threads, the filling pipe (10) penetrates through the corresponding base (12), and locking nuts (28) are respectively arranged on the two side parts of the base (12) of the filling pipe (10);
the pressure conduction pipe (5) and the pressure injection pipe (11) are respectively hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211292561.4A CN115824818A (en) | 2022-10-21 | 2022-10-21 | Common rail pipe fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211292561.4A CN115824818A (en) | 2022-10-21 | 2022-10-21 | Common rail pipe fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115824818A true CN115824818A (en) | 2023-03-21 |
Family
ID=85525167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211292561.4A Pending CN115824818A (en) | 2022-10-21 | 2022-10-21 | Common rail pipe fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115824818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116908002A (en) * | 2023-07-24 | 2023-10-20 | 济南众测机电设备有限公司 | Catheter burst pressurization testing device and testing method |
| CN118654838A (en) * | 2024-08-12 | 2024-09-17 | 张家港保税区恒隆钢管有限公司 | A kind of testing equipment for processing engine common rail pipe |
-
2022
- 2022-10-21 CN CN202211292561.4A patent/CN115824818A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116908002A (en) * | 2023-07-24 | 2023-10-20 | 济南众测机电设备有限公司 | Catheter burst pressurization testing device and testing method |
| CN116908002B (en) * | 2023-07-24 | 2024-03-12 | 济南众测机电设备有限公司 | Catheter burst pressurization testing device and testing method |
| CN118654838A (en) * | 2024-08-12 | 2024-09-17 | 张家港保税区恒隆钢管有限公司 | A kind of testing equipment for processing engine common rail pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115824818A (en) | Common rail pipe fatigue test device | |
| CN212568313U (en) | New forms of energy car battery package liquid cold drawing burst pressure testing arrangement | |
| MXPA02002528A (en) | Actuating fluid delivery system for a fuel injector. | |
| WO2003011665A1 (en) | Electrohydraulic unit | |
| CN210802796U (en) | Battery withstand voltage testing mechanism | |
| CN216815923U (en) | Plugging device for air tightness test | |
| CN216116615U (en) | High-pressure water pipe testing device | |
| CN213497568U (en) | Press mounting mechanism | |
| CN214979062U (en) | Water pump tool pressing pin positioning tool | |
| CN110285941A (en) | The vibration coefficient testing device that multi-angle Synchronous is tested in high-pressure pump operational process | |
| CN213091091U (en) | Semi-automatization bellows subassembly seals detection device | |
| CN209570336U (en) | HXN5B locomotive fuel injector testing stand fixture | |
| CN219495577U (en) | Leak hunting device with shock attenuation effect | |
| CN108871707B (en) | Leakage detection device of natural gas ball valve | |
| CN217976637U (en) | High-low temperature test bed for testing performance of electric fuel pump | |
| CN113447197A (en) | Detection device is used in manometer production | |
| CN216116611U (en) | Leakage quantity test fixture is let out to solenoid valve | |
| CN211576816U (en) | Hydraulic test device for pipeline engineering | |
| CN219935539U (en) | High-pressure oil pipe pressure-resistant testing machine | |
| CN114441299A (en) | Clamping and sealing test device and test method for cable and lead-in device | |
| CN203867849U (en) | Clutch booster pump detection device | |
| CN216967636U (en) | Portable high-pressure composite pipe buckling and pressing machine | |
| CN221173358U (en) | Extensometer with quick fixing function | |
| CN220195352U (en) | Pressure glue injection device | |
| CN219932615U (en) | Cab overturning hydraulic cylinder capable of rapidly assembling connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |