Turbocharger test bench and test method thereof
By designing a triaxial stabilization device and a vibration damping and balancing device for the turbocharger test bench, the problem of test result deviation caused by vibration in turbocharger testing was solved, and high-precision performance evaluation was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-04-03
AI Technical Summary
Existing turbocharger testing methods involve significant vibrations, leading to discrepancies between test results and actual usage conditions. This makes it impossible to fully assess performance indicators and reduces the accuracy of the tests.
A turbocharger test bench was designed, which uses a three-axis stabilization device for precise adjustment in the X, Y, and Z directions. Combined with a vibration damping and balancing device and an auxiliary tensioning device, it ensures the stability and fixation of the turbocharger during the test. The test bench is automated and performs data analysis through a controller.
It improves the accuracy and stability of turbocharger testing, reduces human error, shortens the testing cycle, and ensures that the test data is closer to actual use conditions.
Smart Images
Figure CN121783516A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of turbocharger testing technology, specifically to a turbocharger test bench and its testing method. Background Technology
[0002] As a crucial component for improving engine power and fuel economy, the performance of turbochargers directly impacts the overall engine performance. During the research, development, production, and quality testing of turbochargers, comprehensive and accurate performance testing is essential to ensure they meet practical application requirements. Currently, existing turbochargers are typically tested on a fixed testing platform. This process generates significant vibrations, leading to discrepancies between test results and actual usage conditions. Furthermore, the test parameters on the platform are not comprehensive enough to fully evaluate the turbocharger's various performance indicators, thus reducing the accuracy of turbocharger testing. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a turbocharger test bench and its testing method.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a turbocharger test bench, comprising a test bench frame, with supporting columns fixedly installed at the four corners of the lower surface of the test bench frame, a balance detection probe fixedly installed on the upper surface of the test bench frame, a controller fixedly installed on the right side of the test bench frame, a triaxial stabilizing device provided on the bottom inner wall of the test bench frame, a shock-absorbing balancing device provided in the middle of the triaxial stabilizing device, an auxiliary tensioning device provided on the top of the triaxial stabilizing device, and a locking device provided on the top of the triaxial stabilizing device.
[0005] Preferably, the upper surface of the auxiliary tensioning device is provided with a pressure pipe, and the inner side of the auxiliary tensioning device is provided with a turbocharger.
[0006] Preferably, the triaxial stabilizing device includes a first fixed bracket fixedly installed on the inner wall of the bottom of the test bench frame, a first drive motor fixedly installed on the right side of the first fixed bracket, a first rotating screw fixedly installed at the output end of the first drive motor, a second fixed bracket fixedly installed on the inner wall of the bottom of the test bench frame, a guide rail fixedly installed on the top of the second fixed bracket, a transverse slider slidably provided on the outer surface of the guide rail, a third fixed bracket fixedly installed on the upper surface of the transverse slider, a second drive motor fixedly installed on the front of the third fixed bracket, a second rotating screw fixedly installed at the output end of the second drive motor, a movable slide on the outer surface of the second rotating screw, a vertical support frame on the upper surface of the movable slide, a third drive motor fixedly installed on the upper surface of the vertical support frame, and a third rotating screw fixedly installed at the output end of the third drive motor.
[0007] Preferably, the shock-absorbing and balancing device includes a shock-absorbing spring column fixedly installed on the upper surface of the movable slide. An installation platform is fixedly installed on the upper surface of the shock-absorbing spring column. An extension crossbeam is fixedly installed on the outer side of the installation platform. A first magnet block is fixedly installed on the outer side of the extension crossbeam. A stabilizing column is fixedly installed on the lower surface of the extension crossbeam. A connecting crossbeam connected to the outer side of the movable slide is slidably provided on the outer surface of the stabilizing column. A second magnet block is fixedly installed on the outer side of the connecting crossbeam.
[0008] Preferably, the auxiliary tensioning device includes a driving vertical block threaded onto the outer surface of the third rotating screw, an mounting horizontal block fixedly mounted on the front of the driving vertical block, a stabilizing block fixedly mounted on the outer side of the mounting horizontal block, a first adjusting horizontal plate and a second adjusting horizontal plate slidably disposed inside the stabilizing block, a positioning rod inserted into the stabilizing block passing through the interior of the first adjusting horizontal plate and the second adjusting horizontal plate, respectively, a first tensioning block fixedly mounted on the inner side of the first adjusting horizontal plate, and a second tensioning block fixedly mounted on the inner side of the second adjusting horizontal plate.
[0009] Preferably, the locking device includes an electric telescopic rod fixedly installed on the outer side of the mounting block, a pushing plate fixedly installed at the output end of the electric telescopic rod, a balance detection receiver fixedly installed on the pushing plate at the bottom, an insertable cylinder fixedly installed on the inner side of the pushing plate, a locking positioning plate fixedly installed on the outer side of the pushing plate, and a U-shaped locking rod inserted into the inside of the locking positioning plate.
[0010] Preferably, the lower surface of the first fixed bracket is fixedly connected to the upper surface of the mounting platform, and the lower surface of the shock-absorbing spring column is fixedly connected to the upper surface of the movable slide.
[0011] Preferably, a supporting sliding column is fixedly installed on the lower surface of the movable slide table, and an elongated sliding groove is formed on the upper surface of the transverse slider, along which the supporting sliding column slides.
[0012] Preferably, a sliding rail is fixedly installed on the outer side of the vertical support frame, and a rail groove is provided on the inner side of the mounting block, with the sliding rail slidably connected to the rail groove.
[0013] The present invention further provides a test method for a turbocharger test bench, including the turbocharger test bench described above, comprising the following steps: Step 1: Place the turbocharger on the test bench frame. According to the size of the turbocharger, initially place the turbocharger on the shock absorption balancing device and auxiliary tensioning device. According to the outer diameter of the turbocharger, control the first and second adjusting plates to make the first and second tensioning blocks evenly contact the outer surface of the turbocharger. Fix the adjusting plates with the positioning rod and tighten the knob of the positioning rod to ensure that the adjusting plates will not move during the test, thus achieving the initial tensioning of the turbocharger. Step 2: Then activate the electric telescopic rod of the locking device to move the horizontal plate toward the turbocharger, so that the plug-in cylinder can be smoothly inserted into the mounting hole of the turbocharger. Insert the U-shaped locking rod into the slot of the locking plate to further fix the turbocharger. After fixing, check whether the turbocharger is stable. Tap the side of the turbocharger with a force of 0.5kg. The displacement should not exceed 0.01mm. Step 3: Then, the center coordinate parameters of the turbocharger are input through the controller. The controller automatically controls the operation of the first drive motor, the second drive motor and the third drive motor of the three-axis stabilization device. The output end of the first drive motor drives the first rotating screw to rotate, and the first rotating screw drives the lateral slider to move, thereby adjusting the position of the turbocharger in the X direction. The output end of the second drive motor drives the second rotating screw to rotate, and the second rotating screw drives the moving slide to move, thereby adjusting the position of the turbocharger in the Y direction. The third drive motor drives the third rotating screw to rotate, and the third rotating screw drives the turbocharger to move in the Z direction, finally adjusting it to the center position of the test bench, with a position deviation of no more than ±0.1mm. After the adjustment is completed, the position of the three-axis stabilization device is locked. Step 4: Activate the shock absorption and balancing device to put the shock absorption spring column into working condition. When the turbocharger vibrates, the shock absorption spring column will undergo elastic deformation to absorb some of the vibration energy. At the same time, through the cooperation of the first and second magnet blocks, the principle of mutual repulsion of like magnetic poles is used to generate a repulsive force, which further buffers the vibration, keeps the installation platform relatively stable, and reduces the impact of vibration on the test results. Step 5: Then, air is supplied to the turbocharger through the pressure pipeline. The air pressure parameters are set through the controller. The pressure adjustment range is 0.1-10MPa, and the adjustment accuracy is ±0.01MPa. The valve of the pressure pipeline is opened, and the air pressure is gradually adjusted to the set value. Step 6: During the operation of the turbocharger, the balance detection probe collects the balance status data of the turbocharger at a frequency of 1000Hz. The balance detection receiver receives the data synchronously. After filtering and amplification, the data is transmitted to the controller. The controller performs Fourier transform and other analysis processing on the data to calculate the imbalance of the turbocharger. At the same time, it displays and records various data in real time, including speed, pressure, imbalance, etc.
[0014] Compared with the prior art, the present invention provides a turbocharger test bench and its test method, which has the following beneficial effects: This turbocharger test bench and its testing method, through the setting of a three-axis stabilization device, can achieve precise adjustment of the turbocharger in the X, Y, and Z directions, ensuring that it is in the center position of the test bench, providing a stable foundation for testing. The entire testing process is automatically controlled by a controller, and the operation of parameter setting, data acquisition and analysis is convenient, reducing manual intervention, which not only reduces human error, but also improves testing efficiency and shortens the testing cycle.
[0015] The turbocharger test bench and its test method, by setting up an auxiliary tensioning device, can adapt to turbochargers of different sizes by adjusting the first and second adjusting horizontal plates to achieve initial fixation. The clamping device uses an electric telescopic rod to push the plug-in cylinder into the mounting hole, and works in conjunction with a U-shaped clamping rod for further reinforcement. The dual fixing method ensures that the turbocharger will not shift during the test, thus guaranteeing the stability of the test.
[0016] The turbocharger test bench and its testing method, by setting up a vibration damping and balancing device, in which the vibration damping spring column can absorb most of the vibration energy generated when the turbocharger is working by its own elasticity, and at the same time, the magnetic force between the first and second magnet blocks forms damping, further suppressing vibration, so that the turbocharger maintains a relatively stable state during the test, which greatly reduces the deviation of test results caused by vibration, makes the test data closer to the actual use situation, and significantly improves the accuracy of the test. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the three-axis stabilization device of the present invention; Figure 5 This is a schematic diagram of the vibration damping and balancing device of the present invention; Figure 6This is a schematic diagram of the auxiliary tensioning device of the present invention; Figure 7 This is a schematic diagram of the clamping device of the present invention.
[0018] In the diagram: 1. Test bench frame; 2. Support column; 3. Balance detection probe; 4. Controller; 5. Triaxial stabilization device; 501. First fixed bracket; 502. First drive motor; 503. First rotating screw; 504. Second fixed bracket; 505. Guide slide rail; 506. Horizontal slider; 507. Third fixed bracket; 508. Second drive motor; 509. Second rotating screw; 510. Moving slide; 511. Vertical support frame; 512. Third drive motor; 513. Third rotating screw; 6. Vibration damping and balancing device; 601. Vibration damping spring column; 602. Mounting platform; 603. 604. Extended crossbeam; 605. First magnet block; 606. Stabilizing column; 607. Connecting crossbeam; 608. Second magnet block; 7. Auxiliary tensioning device; 709. Drive vertical block; 7000. Mounting crossbeam; 701. Stabilizing block; 702. First adjusting crossbeam; 703. Second adjusting crossbeam; 704. Positioning rod; 705. First tensioning block; 706. Second tensioning block; 8. Locking device; 801. Electric telescopic rod; 802. Pushing crossbeam; 803. Balance detection receiver; 804. Inserting cylinder; 805. Locking positioning plate; 806. U-shaped locking rod; 9. Pressure pipeline; 10. Turbocharger. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figure 1-7A turbocharger test bench includes a test bench frame 1. Support columns 2 are fixedly installed at the four corners of the lower surface of the test bench frame 1. The support columns 2 are made of high-strength alloy material, providing stable support for the entire test bench, effectively distributing the weight of the test bench, and ensuring that the test bench does not shake during operation. A balance detection probe 3 is fixedly installed on the upper surface of the test bench frame 1. The balance detection probe 3 uses a high-precision sensor to monitor the balance state of the turbocharger in real time during the test. A controller 4 is fixedly installed on the right side of the test bench frame 1. The controller 4 has a built-in high-performance processor and advanced control algorithms, which can receive and process data from various sensors and precisely control the various devices of the test bench. A triaxial stabilization device 5 is provided on the inner wall of the bottom of the test bench frame 1. The triaxial stabilization device 5 can stabilize the turbocharger in the X, Y, and Z directions. To ensure stability during testing, the triaxial stabilizing device 5 is equipped with a shock-absorbing and balancing device 6 in its middle section. This device effectively absorbs vibrations generated during turbocharger operation, reducing their impact on test results. An auxiliary tensioning device 7 is located at the top of the triaxial stabilizing device 5. This device can be adjusted according to the turbocharger's dimensions for initial fixation. A locking device 8 further secures the turbocharger, preventing displacement during testing. A pressure pipe 9 is installed on the upper surface of the auxiliary tensioning device 7. This pipe is made of corrosion-resistant, high-strength material, capable of withstanding high-pressure gas transport. Its inner wall undergoes special treatment to reduce resistance and turbulence during gas flow. The turbocharger 10 is located inside the auxiliary tensioning device 7.
[0021] In this embodiment, the triaxial stabilizing device 5 includes a first fixed bracket 501 fixedly installed on the inner wall of the bottom of the test bench frame 1. The first fixed bracket 501 is made by casting and has high structural strength and stability. A first drive motor 502 is fixedly installed on the right side of the first fixed bracket 501. The first drive motor 502 is a servo motor, which has the characteristics of stable speed and high control precision. Its output torque can be adjusted according to actual needs. A first rotating screw 503 is fixedly installed at the output end of the first drive motor 502. The first rotating screw 503 adopts a high-precision screw. Textured surface treatment ensures the moving accuracy of the transverse slider 506. A second fixed bracket 504 is fixedly installed on the inner wall of the bottom of the test bench frame 1. The second fixed bracket 504 has the same structure as the first fixed bracket 501 and together provides support for the guide rail 505. The guide rail 505 is fixedly installed on the top of the second fixed bracket 504. The surface of the guide rail 505 is hardened. The transverse slider 506 is slidably mounted on the outer surface of the guide rail 505. High-precision balls are installed inside the transverse slider 506, which has a small clearance with the guide rail 505 and low sliding resistance. A third fixed bracket 507 is fixedly installed on the upper surface of 06. The structure of the third fixed bracket 507 is similar to that of the first fixed bracket 501. A second drive motor 508 is fixedly installed on the front of the third fixed bracket 507. The second drive motor 508 is also a servo motor, and its performance parameters match those of the first drive motor 502. A second rotating screw 509 is fixedly installed at the output end of the second drive motor 508. The parameters of the second rotating screw 509 are the same as those of the first rotating screw 503. A movable slide 510 is provided on the outer surface of the second rotating screw 509. The bottom of the movable slide 510... A nut matching the second rotating screw 509 is installed to ensure that the movable slide 510 can move smoothly. A vertical support frame 511 is provided on the upper surface of the movable slide 510. The vertical support frame 511 is welded from square steel and has a stable structure. A third drive motor 512 is fixedly installed on the upper surface of the vertical support frame 511. The third drive motor 512 is a servo motor used to drive the third rotating screw 513 to rotate. The output end of the third drive motor 512 is fixedly installed with the third rotating screw 513. The parameters of the third rotating screw 513 are the same as those of the first rotating screw 503.
[0022] In this embodiment, the shock-absorbing and balancing device 6 includes a shock-absorbing spring column 601 fixedly installed on the upper surface of the movable slide table 510. The shock-absorbing spring column 601 is made of high-strength spring steel, which has good elasticity and fatigue life. Its spring stiffness can be designed according to the weight and vibration of the turbocharger 10. An installation platform 602 is fixedly installed on the upper surface of the shock-absorbing spring column 601. The surface of the installation platform 602 is precision machined to ensure that the turbocharger is placed stably. An extension crossbeam 603 is fixedly installed on the outer side of the installation platform 602. The extension crossbeam 603 is used to install the first magnet block 604 and the stabilizing column 605. The first magnet block 604 is fixedly installed on the outer side of the extension crossbeam 603. The first magnet block 604 is a strong... A magnet with uniform magnetic force is used. A stabilizing column 605 is fixedly installed on the lower surface of the extension crossbeam 603. The stabilizing column 605 is made of solid steel to improve the stability of the extension crossbeam 603. A connecting crossbeam 606 is slidably provided on the outer surface of the stabilizing column 605 and connected to the outer side of the movable slide table 510. The connecting crossbeam 606 can slide up and down along the stabilizing column 605. A second magnet block 607 is fixedly installed on the outer side of the connecting crossbeam 606. The second magnet block 607 is arranged opposite to the first magnet block 604. Through the magnetic force, the shock absorption and balance effect is further improved. When the installation platform 602 moves up and down due to vibration, the magnetic force between the first magnet block 604 and the second magnet block 607 will generate a damping force to suppress vibration.
[0023] In this embodiment, the auxiliary tensioning device 7 includes a driving vertical block 701 threaded onto the outer surface of the third rotating screw 513. The driving vertical block 701 can move up and down under the drive of the third rotating screw 513. A mounting horizontal block 702 is fixedly installed on the front of the driving vertical block 701. The mounting horizontal block 702 provides a mounting base for the first adjusting horizontal plate 704 and the second adjusting horizontal plate 705. A stabilizing block 703 is fixedly installed on the outer side of the mounting horizontal block 702. The inside of the stabilizing block 703 is provided with a sliding groove that matches the first adjusting horizontal plate 704 and the second adjusting horizontal plate 705 to ensure smooth sliding of the adjusting horizontal plate. The first adjusting horizontal plate 704 and the second adjusting horizontal plate 705 are slidably provided inside the stabilizing block 703. The first adjusting plate 704 and the second adjusting plate 705 are chrome-plated to improve wear resistance. The first adjusting plate 704 and the second adjusting plate 705 are respectively inserted into the interior of the stabilizing block 703. The end of the positioning rod 706 is provided with a knob for easy manual tightening. The inner side of the first adjusting plate 704 is fixedly installed with a first tensioning block 707, and the inner side of the second adjusting plate 705 is fixedly installed with a second tensioning block 708. The inner surfaces of the first tensioning block 707 and the second tensioning block 708 are provided with anti-slip texture to increase the friction with the outer surface of the turbocharger 10.
[0024] In this embodiment, the locking device 8 includes an electric telescopic rod 801 fixedly installed on the outer side of the mounting block 702. The electric telescopic rod 801 adopts high-precision servo control and has a fast response speed. A pushing plate 802 is fixedly installed at the output end of the electric telescopic rod 801. The pushing plate 802 is used to transmit the thrust of the electric telescopic rod 801. A balance detection receiver 803 is fixedly installed on the pushing plate 802 at the bottom. The balance detection receiver 803 works in conjunction with the balance detection probe 3 to quickly and accurately detect the balance. The system receives balance status data and pushes the inner side of the horizontal plate 802 to fix a plug-in cylinder 804. The diameter of the plug-in cylinder 804 matches the mounting hole of the turbocharger 10 to ensure a firm connection. The outer side of the horizontal plate 802 is fixedly installed with a locking plate 805. The locking plate 805 has a slot that matches the U-shaped locking rod 806. The U-shaped locking rod 806 is inserted into the inside of the locking plate 805. The U-shaped locking rod 806 is made of high-strength steel and has good rigidity.
[0025] In this embodiment, the lower surface of the first fixed bracket 501 is fixedly connected to the upper surface of the mounting platform 602, and the lower surface of the shock-absorbing spring column 601 is fixedly connected to the upper surface of the movable slide 510. This connection method ensures a stable connection between the triaxial stabilizing device 5 and the shock-absorbing balancing device 6, enabling the force to be effectively transmitted.
[0026] In this embodiment, a supporting sliding column is fixedly installed on the lower surface of the movable slide table 510, and a long strip-shaped sliding groove is opened on the upper surface of the transverse slider 506. The supporting sliding column slides along the long strip-shaped sliding groove to ensure the stability and straightness of the movable slide table 510 when moving laterally.
[0027] In this embodiment, a sliding rail is fixedly installed on the outer side of the vertical support frame 511. The sliding rail has a T-shaped cross section and good guiding properties. A track groove is provided on the inner side of the mounting block 702. The size of the track groove matches the sliding rail. The sliding rail and the track groove are slidably connected, making the mounting block 702 more stable and reliable when moving vertically.
[0028] The present invention further provides a test method for a turbocharger test bench, including the turbocharger test bench described above, comprising the following steps: Step 1: Place the turbocharger 10 on the test bench frame 1. According to the size of the turbocharger 10, initially place the turbocharger 10 on the shock absorption and balancing device 6 and the auxiliary tensioning device 7. According to the outer diameter of the turbocharger 10, control the first adjusting plate 704 and the second adjusting plate 705 to make the first tensioning block 707 and the second tensioning block 708 evenly contact the outer surface of the turbocharger 10. Fix the adjusting plate by the positioning rod 706 and tighten the knob of the positioning rod 706 to ensure that the adjusting plate will not move during the test, thus achieving the initial tensioning of the turbocharger 10.
[0029] Step 2: Then, activate the electric telescopic rod 801 of the locking device 8 to drive the push plate 802 to move towards the turbocharger 10, so that the insertion cylinder 804 can be smoothly inserted into the mounting hole of the turbocharger 10. Insert the U-shaped locking rod 806 into the slot of the locking plate 805 to further fix the turbocharger 10. After fixing, check whether the turbocharger 10 is stable. Tap the side of the turbocharger 10 with a force of 0.5 kg. The displacement should not exceed 0.01 mm.
[0030] Step 3: Subsequently, the center coordinate parameters of the turbocharger 10 are input through the controller 4. The controller 4 automatically controls the operation of the first drive motor 502, the second drive motor 508, and the third drive motor 512 of the triaxial stabilization device 5. The output of the first drive motor 502 drives the first rotating screw 503 to rotate, which in turn moves the transverse slider 506, thereby adjusting the position of the turbocharger 10 in the X direction. The output of the second drive motor 508 drives the second rotating screw 509 to rotate, which in turn moves the moving slide 510, thereby adjusting the position of the turbocharger 10 in the Y direction. The third drive motor 512 drives the third rotating screw 513 to rotate, which in turn moves the turbocharger 10 in the Z direction, ultimately adjusting it to the center position of the test bench with a positional deviation not exceeding ±0.1mm. After adjustment, the position of the triaxial stabilization device 5 is locked. Step 4: Activate the shock absorption and balancing device 6 to put the shock absorption spring column 601 into working condition. When the turbocharger 10 vibrates, the shock absorption spring column 601 will undergo elastic deformation to absorb some of the vibration energy. At the same time, through the cooperation of the first magnet block 604 and the second magnet block 607, the principle of mutual repulsion of like magnetic poles is used to generate a repulsive force, which further buffers the vibration, keeps the mounting platform 602 relatively stable, and reduces the impact of vibration on the test results.
[0031] Step 5: Then, air is supplied to the turbocharger 10 through the pressure pipe 9. The air pressure parameters are set by the controller 4. The pressure adjustment range is 0.1-10MPa, and the adjustment accuracy is ±0.01MPa. The valve of the pressure pipe 9 is opened, and the air pressure is gradually adjusted to the set value. Step 6: During the operation of the turbocharger 10, the balance detection probe 3 collects the balance status data of the turbocharger 10 at a frequency of 1000Hz. The balance detection receiver 803 receives the data synchronously. After filtering and amplification, the data is transmitted to the controller 4. The controller 4 performs Fourier transform and other analysis processing on the data to calculate the imbalance of the turbocharger 10. At the same time, it displays and records various data in real time, including speed, pressure, imbalance, etc.
[0032] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0033] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.
Claims
1. A turbocharger test bench, comprising a test bench frame (1), wherein support columns (2) are fixedly installed at the four corners of the lower surface of the test bench frame (1), a balance detection probe (3) is fixedly installed on the upper surface of the test bench frame (1), and a controller (4) is fixedly installed on the right side of the test bench frame (1), characterized in that: The test bench frame (1) is provided with a triaxial stabilizing device (5) on the bottom inner wall, a shock-absorbing balancing device (6) is provided in the middle of the triaxial stabilizing device (5), an auxiliary tensioning device (7) is provided on the top of the triaxial stabilizing device (5), and a locking device (8) is provided on the top of the triaxial stabilizing device (5).
2. The turbocharger test bench according to claim 1, characterized in that: The upper surface of the auxiliary tensioning device (7) is provided with a pressure pipe (9), and the inner side of the auxiliary tensioning device (7) is provided with a turbocharger (10).
3. The turbocharger test bench according to claim 1, characterized in that: The triaxial stabilizing device (5) includes a first fixed bracket (501) fixedly installed on the inner wall of the bottom of the test bench frame (1), a first drive motor (502) fixedly installed on the right side of the first fixed bracket (501), a first rotating screw (503) fixedly installed at the output end of the first drive motor (502), a second fixed bracket (504) fixedly installed on the inner wall of the bottom of the test bench frame (1), a guide rail (505) fixedly installed on the top of the second fixed bracket (504), and a transverse slider (506) slidably provided on the outer surface of the guide rail (505). A third fixed bracket (507) is fixedly installed on the upper surface of the device. A second drive motor (508) is fixedly installed on the front of the third fixed bracket (507). A second rotating screw (509) is fixedly installed at the output end of the second drive motor (508). A movable slide (510) is provided on the outer surface of the second rotating screw (509). A vertical support frame (511) is provided on the upper surface of the movable slide (510). A third drive motor (512) is fixedly installed on the upper surface of the vertical support frame (511). A third rotating screw (513) is fixedly installed at the output end of the third drive motor (512).
4. The turbocharger test bench according to claim 1, characterized in that: The shock-absorbing and balancing device (6) includes a shock-absorbing spring column (601) fixedly installed on the upper surface of the movable slide (510), an installation platform (602) fixedly installed on the upper surface of the shock-absorbing spring column (601), an extension crossbeam (603) fixedly installed on the outer side of the installation platform (602), a first magnet block (604) fixedly installed on the outer side of the extension crossbeam (603), a stabilizing column (605) fixedly installed on the lower surface of the extension crossbeam (603), a connecting crossbeam (606) slidably provided on the outer surface of the stabilizing column (605) and connected to the outer side of the movable slide (510), and a second magnet block (607) fixedly installed on the outer side of the connecting crossbeam (606).
5. A turbocharger test bench according to claim 1, characterized in that: The auxiliary tensioning device (7) includes a drive vertical block (701) threaded onto the outer surface of the third rotating screw (513). A mounting horizontal block (702) is fixedly mounted on the front of the drive vertical block (701). A stabilizing block (703) is fixedly mounted on the outer side of the mounting horizontal block (702). A first adjusting horizontal plate (704) and a second adjusting horizontal plate (705) are slidably arranged inside the stabilizing block (703). A positioning rod (706) inserted into the stabilizing block (703) passes through the interior of the first adjusting horizontal plate (704) and the second adjusting horizontal plate (705). A first tensioning block (707) is fixedly mounted on the inner side of the first adjusting horizontal plate (704), and a second tensioning block (708) is fixedly mounted on the inner side of the second adjusting horizontal plate (705).
6. A turbocharger test bench according to claim 1, characterized in that: The locking device (8) includes an electric telescopic rod (801) fixedly installed on the outer side of the mounting block (702). A push plate (802) is fixedly installed at the output end of the electric telescopic rod (801). A balance detection receiver (803) is fixedly installed on the push plate (802) at the bottom. An insert cylinder (804) is fixedly installed on the inner side of the push plate (802). A locking plate (805) is fixedly installed on the outer side of the push plate (802). A U-shaped locking rod (806) is inserted into the inside of the locking plate (805).
7. A turbocharger test bench according to claim 3 or 4, characterized in that: The lower surface of the first fixed bracket (501) is fixedly connected to the upper surface of the mounting platform (602), and the lower surface of the shock-absorbing spring column (601) is fixedly connected to the upper surface of the movable slide (510).
8. A turbocharger test bench according to claim 3, characterized in that: The lower surface of the movable slide (510) is fixedly equipped with a supporting sliding column, and the upper surface of the transverse slider (506) is provided with a long strip-shaped groove, along which the supporting sliding column slides.
9. A turbocharger test bench according to claim 3 or 5, characterized in that: The outer side of the vertical support frame (511) is fixedly equipped with a sliding rail, and the inner side of the mounting block (702) is provided with a rail groove, and the sliding rail is slidably connected to the rail groove.
10. A test method for a turbocharger test bench, comprising a turbocharger test bench as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the turbocharger (10) on the test bench frame (1). According to the size of the turbocharger (10), place the turbocharger (10) on the shock absorption and balancing device (6) and the auxiliary tensioning device (7). According to the outer diameter of the turbocharger (10), control the first adjusting plate (704) and the second adjusting plate (705) so that the first tensioning block (707) and the second tensioning block (708) are in uniform contact with the outer surface of the turbocharger (10). Fix the adjusting plate by the positioning rod (706) and tighten the knob of the positioning rod (706) to ensure that the adjusting plate will not move during the test, thus achieving the initial tensioning of the turbocharger (10). Step 2: Then activate the electric telescopic rod (801) of the locking device (8) to drive the push plate (802) to move towards the turbocharger (10), so that the insertion cylinder (804) can be smoothly inserted into the mounting hole of the turbocharger (10). Insert the U-shaped locking rod (806) into the slot of the locking plate (805) to further fix the turbocharger (10). After fixing, check whether the turbocharger (10) is stable. Tap the side of the turbocharger (10) with a force of 0.5kg. The displacement should not exceed 0.01mm. Step 3: Subsequently, the center coordinate parameters of the turbocharger (10) are input through the controller (4). The controller (4) automatically controls the operation of the first drive motor (502), the second drive motor (508), and the third drive motor (512) of the three-axis stabilizing device (5). The output end of the first drive motor (502) drives the first rotating screw (503) to rotate. The first rotating screw (503) drives the transverse slider (506) to move, thereby realizing the position adjustment of the turbocharger (10) in the X direction. The second drive motor (508) drives the third drive motor (512) to move. The output end of 08 drives the second rotating screw (509) to rotate, the second rotating screw (509) drives the moving slide (510) to move, thereby realizing the position adjustment of the turbocharger (10) in the Y direction. The third drive motor (512) drives the third rotating screw (513) to rotate, and the third rotating screw (513) drives the turbocharger (10) to move in the Z direction, finally adjusting it to the center position of the test bench. The position deviation does not exceed ±0.1mm. After the adjustment is completed, the position of the triaxial stabilizing device (5) is locked. Step 4: Activate the shock absorption and balancing device (6) to put the shock absorption spring column (601) into working state. When the turbocharger (10) vibrates, the shock absorption spring column (601) will undergo elastic deformation to absorb some of the vibration energy. At the same time, through the cooperation of the first magnet block (604) and the second magnet block (607), the principle of mutual repulsion of like magnetic poles is used to generate a repulsive force, further buffering the vibration and keeping the mounting platform (602) relatively stable, reducing the impact of vibration on the test results. Step 5: Then, air is supplied to the turbocharger (10) through the pressure pipe (9). The air pressure parameters are set by the controller (4). The pressure adjustment range is 0.1-10MPa, and the adjustment accuracy is ±0.01MPa. The valve of the pressure pipe (9) is opened, and the air pressure is gradually adjusted to the set value. Step 6: During the operation of the turbocharger (10), the balance detection probe (3) collects the balance status data of the turbocharger (10) at a frequency of 1000Hz. The balance detection receiver (803) receives the data synchronously. After filtering and amplification, the data is transmitted to the controller (4). The controller (4) performs Fourier transform and other analysis processing on the data to calculate the imbalance of the turbocharger (10). At the same time, it displays and records various data in real time, including speed, pressure, imbalance, etc.