Turbocharger axial force testing structure

Abstract

The utility model discloses a turbocharger axial force testing structure, which belongs to the technical field of turbochargers, and comprises a turbocharger body, a base and a bottom plate, the bottom of the turbocharger body is movably contacted with the top of the bottom plate, the top of the bottom plate is provided with a detection platform, and the bottom of the bottom plate is provided with an axial force testing device. A detection mechanism is arranged at the top of the detection table; the detection mechanism comprises a detection column, a displacement sensor, a fixed barrel and a pressure sensor, the bottom of the pressure sensor is fixedly connected with the top of the detection table, the front side of the fixed barrel is fixedly connected with the rear side of the pressure sensor, and the front side of the detection column extends into the detection column and is movably connected with the interior of the detection column; the problems that in an axial force test provided in the prior art, only one force measuring sensor is used for detection, the detection precision is limited, and it is inconvenient to comprehensively detect and judge the axial force of the turbocharger in multiple aspects are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, and particularly relates to an axial force test structure of a turbocharger. Background Art

[0002] A turbocharger is a key component of an internal combustion engine. A radial-flow turbocharger absorbs the energy of the exhaust gas in the exhaust pipe through the radial turbine at the turbine end, converts it into rotor torque, drives the impeller at the compressor end to do work, thereby compressing fresh air, increasing the intake density of the internal combustion engine. During the operation of the turbocharger, due to the different gas pressures on the blade surface and the back of the wheel of the turbine at the turbine end and the impeller at the compressor end, aerodynamic forces are generated in the axial direction of the turbocharger when the two wheels work respectively. Generally, the axial aerodynamic forces received by the turbine and the compressor impeller cannot cancel each other out, resulting in an overall axial aerodynamic force on the turbocharger rotor. This axial aerodynamic force will be transmitted to the thrust bearing of the turbocharger or the thrust surface of the bearing system, and then be cancelled out. Therefore, the maximum value of the axial aerodynamic force during the operation of the turbocharger becomes the design boundary condition for the thrust surface of the turbocharger bearing system. The bearing system is a key component of the turbocharger. An excellent design of the bearing thrust surface can reduce mechanical friction loss and greatly improve the reliability and service life of the turbocharger.

[0003] At present, the industry's research on bearing systems mainly focuses on split-type radial full-floating bearings. There is not much research on the integral semi-floating bearings of turbochargers, and the research on the design of the thrust surface of integral semi-floating bearings is still in its infancy, with few publicly available research results.

[0004] The existing patent (Publication No.: CN209264162U) is a turbocharger axial force test system. This utility model can meet the test requirements of the axial force of the turbocharger.

[0005] In view of the above problems, the existing patent gives a solution. After the applicant reviewed the existing patent (Publication No.: CN209264162U), the following problems were found: In the existing technical solution, the axial force test is only detected by one force sensor, with limited detection accuracy and inconvenient for comprehensive detection and judgment of the axial force of the turbocharger in multiple aspects.

[0006] Therefore, an axial force test structure of a turbocharger is proposed. Summary of the Utility Model

[0007] The purpose of the utility model is to provide an axial force test structure of a turbocharger, which can solve the problem that in the existing technical solution, the axial force test is only detected by one force sensor, with limited detection accuracy and inconvenient for comprehensive detection and judgment of the axial force of the turbocharger in multiple aspects.

[0008] To achieve the above object, the present utility model provides the following technical solution: An axial force test structure for a turbocharger, comprising a turbocharger body, a base, and a bottom plate. The bottom of the turbocharger body is in movable contact with the top of the bottom plate. A detection table is provided on the top of the bottom plate, and a detection mechanism is provided on the top of the detection table.

[0009] The detection mechanism includes a detection column, a displacement sensor, a fixed barrel, and a pressure sensor. The bottom of the pressure sensor is fixedly connected to the top of the detection table. The front side of the fixed barrel is fixedly connected to the rear side of the pressure sensor. The front side of the detection column extends into the interior of the detection column and is movably connected to the interior of the detection column. The front side of the displacement sensor is fixedly connected to the rear side of the detection table. The rear side of the detection column is in contact with the shaft end of the turbocharger body.

[0010] Preferably, a spring is provided inside the fixed barrel. The rear side of the spring is fixedly connected to the front side of the detection column, and the front side of the spring is fixedly connected to the rear side of the pressure sensor.

[0011] Preferably, a fixed block is fixedly connected to the bottom of the detection column. The rear side of the detection end of the displacement sensor is in contact with the front side of the fixed block. A processor is fixedly connected to the front side of the pressure sensor, and a display screen is fixedly connected to the front side of the detection table.

[0012] Preferably, sliding grooves are provided on both sides of the top of the bottom plate. Sliders are slidably connected inside the sliding grooves, and the tops of the sliders are fixedly connected to the bottom of the detection table.

[0013] Preferably, a fixing plate is fixedly connected to the front side of the top of the bottom plate. An electric telescopic rod is fixedly connected to the rear side of the fixing plate, and the rear side of the telescopic end of the electric telescopic rod is fixedly connected to the front side of the detection table.

[0014] Preferably, a limiting mechanism is provided on the top of the bottom plate. The number of the limiting mechanisms is two. The limiting mechanism includes two limiting columns, a magnet, and a clamping block. The bottom of the magnet is fixedly connected to the top of the limiting column. The bottom of the clamping block is fixedly connected to the top of the bottom plate. The bottom of the limiting column passes through the clamping block and extends into the interior of the base, and the bottom of the magnet is magnetically attracted to the top of the clamping block.

[0015] Preferably, a limiting block is fixedly connected to the right side of the top of the bottom plate, and the right side of the base is in contact with the left side of the limiting block.

[0016] Preferably, fixing holes are provided at the four corners of the top of the bottom plate, and handles are fixedly connected to both sides of the top of the bottom plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. In this application, by connecting the turbocharger body to the bottom plate, when the axial force during the rotation of the turbocharger body acts on the detection column, the detection column moves backward. The pressure sensor and the displacement sensor will collect pressure data and displacement data. The processor receives the data from the pressure sensor and the displacement sensor for processing and displays the results on the display screen. Through the dual detection of the pressure sensor and the displacement sensor, the detection accuracy of the axial force of the turbocharger body can be improved.

[0019] 2. After the detection work is completed in this application, pull the magnet and the limit post upward, which facilitates the removal of the turbocharger body from the top of the bottom plate. The detection column can be reused, reducing the detection cost. Description of the Drawings

[0020] Figure 1 It is the overall structure diagram of the axial force test structure of the turbocharger of the present utility model;

[0021] Figure 2 It is the three-dimensional connection schematic diagram of the turbocharger body and the base of the present utility model;

[0022] Figure 3 It is the three-dimensional exploded schematic diagram of the clamping block and the magnet of the present utility model;

[0023] Figure 4 It is the side view of the connection between the detection table and the pressure sensor of the present utility model;

[0024] Figure 5 It is the internal structure sectional view of the fixed barrel of the present utility model;

[0025] Figure 6 For the present utility model Figure 1 The partial enlarged view at A.

[0026] In the figure, 1. Turbocharger body; 2. Bottom plate; 3. Handle; 4. Limiting mechanism; 401. Limit post; 402. Magnet; 403. Clamping block; 5. Fixed hole; 6. Detection table; 7. Fixed plate; 8. Detection mechanism; 801. Detection column; 802. Displacement sensor; 803. Fixed barrel; 804. Pressure sensor; 9. Base; 10. Limit block; 11. Slide groove; 12. Electric telescopic rod; 13. Processor; 14. Display screen; 15. Fixed block; 16. Spring; 17. Slide block. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1-6 , the present invention provides a technical solution:

[0029] An axial force test structure of a turbocharger includes a turbocharger body 1, a base 9, and a bottom plate 2. The bottom of the turbocharger body 1 is in movable contact with the top of the bottom plate 2. A detection table 6 is provided on the top of the bottom plate 2, and a detection mechanism 8 is provided on the top of the detection table 6;

[0030] The detection mechanism 8 includes a detection column 801, a displacement sensor 802, a fixed barrel 803, and a pressure sensor 804. The bottom of the pressure sensor 804 is fixedly connected to the top of the detection table 6. The front side of the fixed barrel 803 is fixedly connected to the rear side of the pressure sensor 804. The front side of the detection column 801 extends into the interior of the detection column 801 and is movably connected to the interior of the detection column 801. The front side of the displacement sensor 802 is fixedly connected to the rear side of the detection table 6. The rear side of the detection column 801 contacts the shaft end of the turbocharger body 1.

[0031] Specifically, as Figure 5 shown, a spring 16 is provided inside the fixed barrel 803. The rear side of the spring 16 is fixedly connected to the front side of the detection column 801, and the front side of the spring 16 is fixedly connected to the rear side of the pressure sensor 804.

[0032] Specifically, as Figure 1 and Figure 4 shown, a fixed block 15 is fixedly connected to the bottom of the detection column 801. The rear side of the detection end of the displacement sensor 802 contacts the front side of the fixed block 15. A processor 13 is fixedly connected to the front side of the pressure sensor 804, and a display screen 14 is fixedly connected to the front side of the detection table 6.

[0033] Specifically, as Figure 3 and Figure 6 shown, sliding grooves 11 are provided on both sides of the top of the bottom plate 2. Sliders 17 are slidably connected inside the sliding grooves 11, and the tops of the sliders 17 are fixedly connected to the bottom of the detection table 6.

[0034] Specifically, as Figure 1 and Figure 3As shown, a fixed plate 7 is fixedly connected to the front side of the top of the bottom plate 2, and an electric telescopic rod 12 is fixedly connected to the rear side of the fixed plate 7. The rear side of the telescopic end of the electric telescopic rod 12 is fixedly connected to the front side of the detection table 6.

[0035] In this embodiment: After connecting the turbocharger body 1 to the bottom plate 2, by controlling the telescopic end of the electric telescopic rod 12 to extend backward, the rear side of the detection column 801 is brought into contact with the shaft end of the turbocharger body 1. Then, the turbocharger body 1 is driven to rotate by an external power. When the axial force of the turbocharger body 1 acts on the detection column 801, the detection column 801 moves backward, compresses the spring 16 and transmits the force to the pressure sensor 804. The pressure sensor 804 measures the pressure value. At the same time, the displacement sensor 802 detects the displacement amount of the fixed block 15. The function of the spring 16 is to reset the detection column 801 after the axial force disappears. The processor 13 receives the data from the pressure sensor 804 and the displacement sensor 802 for processing, and displays the result on the display screen 14. Through the dual detection of the pressure sensor 804 and the displacement sensor 802, comprehensively judging the axial force data can improve the detection accuracy of the axial force of the turbocharger body 1, and solve the problem that in the existing technical solution, the axial force test is only detected by a single force sensor, the detection accuracy is limited, and it is not convenient to comprehensively detect and judge the axial force of the turbocharger in multiple aspects.

[0036] Specifically, as Figure 3 shown, a limiting mechanism 4 is arranged on the top of the bottom plate 2. The number of the limiting mechanisms 4 is two. The limiting mechanism 4 includes two limiting columns 401, magnets 402 and clamping blocks 403. The bottom of the magnet 402 is fixedly connected to the top of the limiting column 401. The bottom of the clamping block 403 is fixedly connected to the top of the bottom plate 2. The bottom of the limiting column 401 passes through the clamping block 403 and extends into the interior of the base 9. The bottom of the magnet 402 is magnetically attracted to the top of the clamping block 403.

[0037] Specifically, as Figure 2 shown, a limiting block 10 is fixedly connected to the right side of the top of the bottom plate 2. The right side of the base 9 is in contact with the left side of the limiting block 10.

[0038] Specifically, as Figure 1 shown, fixing holes 5 are opened at the four corners of the top of the bottom plate 2, and handles 3 are fixedly connected to both sides of the top of the bottom plate 2.

[0039] In this embodiment: After the detection work is completed, the magnet 402 and the limit post 401 are pulled upward to disengage from the clamping block 403, so that the turbocharger body 1 can be conveniently removed. The detection post 801 can be repeatedly used to detect the axial force of multiple turbocharger bodies 1, reducing the detection cost. The fixing holes 5 at the four corners of the top of the bottom plate 2 can be used to fix the bottom plate 2 on the workbench to enhance stability. The handles 3 on both sides of the top of the bottom plate 2 facilitate the handling and movement of the bottom plate 2.

[0040] Working principle: By moving the base 9 to the top of the bottom plate 2 and inserting it to the right until the surface of the base 9 contacts the inner wall of the clamping block 403, and then inserting the limit post 401 into the clamping block 403 and the base 9, the base 9 and the turbocharger body 1 can be connected to the bottom plate 2. By magnetically attracting the magnet 402 and the clamping block 403, the limit post 401 can be prevented from disengaging from the clamping block 403. Then, control the telescopic end of the electric telescopic rod 12 to move backward to push the detection table 6 to move backward. The detection table 6 slides in the chute 11 of the bottom plate 2 through the slider 17 at the bottom, realizing the contact between the detection post 801 and the shaft end of the turbocharger, which is convenient for testing operations. Then, drive the turbocharger body 1 to rotate through an external power source. When the axial force of the turbocharger body 1 acts on the detection post 801, the detection post 801 moves backward, compressing the spring 16 and transmitting the force to the pressure sensor 804. The pressure sensor 804 measures the pressure value. At the same time, the displacement sensor 802 detects the displacement of the fixed block 15. The function of the spring 16 is to reset the detection post 801 after the axial force disappears. The processor 13 receives the data from the pressure sensor 804 and the displacement sensor 802 for processing and displays the result on the display screen 14. Through the double detection of the pressure sensor 804 and the displacement sensor 802, comprehensively judge the axial force data, which can improve the detection accuracy of the axial force of the turbocharger body 1, avoiding the problem that the axial force test in the existing technical solution is only detected by a single force sensor, with limited detection accuracy and inconvenient for comprehensive detection and judgment of the axial force of the turbocharger in multiple aspects. After the detection work is completed, the magnet 402 and the limit post 401 are pulled upward to disengage from the clamping block 403, so that the turbocharger body 1 can be conveniently removed. The detection post 801 can be repeatedly used to detect the axial force of multiple turbocharger bodies 1, reducing the detection cost. The fixing holes 5 at the four corners of the top of the bottom plate can be used to fix the bottom plate 2 on the workbench to enhance stability. The handles 3 on both sides of the top of the bottom plate 2 facilitate the handling and movement of the bottom plate 2. It should be noted that the pressure sensor 804, the displacement sensor 802, the processor 13 and the display screen 14 are all existing and published mature technologies, which are connected through external connecting wires and powered by an external power source, and will not be elaborated here.

[0041] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An axial force test structure for a turbocharger, comprising a turbocharger body (1), a base (9) and a bottom plate (2), characterized in that: The bottom of the turbocharger body (1) is in movable contact with the top of the bottom plate (2). A detection table (6) is arranged on the top of the bottom plate (2), and a detection mechanism (8) is arranged on the top of the detection table (6). The detection mechanism (8) includes a detection column (801), a displacement sensor (802), a fixed barrel (803) and a pressure sensor (804). The bottom of the pressure sensor (804) is fixedly connected to the top of the detection table (6). The front side of the fixed barrel (803) is fixedly connected to the rear side of the pressure sensor (804). The front side of the detection column (801) extends into the inside of the detection column (801) and is movably connected to the inside of the detection column (801). The front side of the displacement sensor (802) is fixedly connected to the rear side of the detection table (6). The rear side of the detection column (801) is in contact with the shaft end of the turbocharger body (1).

2. The axial force test structure of a turbocharger according to claim 1, characterized in that: A spring (16) is arranged inside the fixed barrel (803). The rear side of the spring (16) is fixedly connected to the front side of the detection column (801), and the front side of the spring (16) is fixedly connected to the rear side of the pressure sensor (804).

3. The axial force test structure of a turbocharger according to claim 1, characterized in that: A fixed block (15) is fixedly connected to the bottom of the detection column (801). The rear side of the detection end of the displacement sensor (802) is in contact with the front side of the fixed block (15). A processor (13) is fixedly connected to the front side of the pressure sensor (804). A display screen (14) is fixedly connected to the front side of the detection table (6).

4. A turbocharger axial force test structure according to claim 1, characterized in that: Chutes (11) are formed on both sides of the top of the bottom plate (2). Sliders (17) are slidably connected inside the chutes (11). The top of the sliders (17) is fixedly connected to the bottom of the detection table (6).

5. The axial force test structure of a turbocharger according to claim 1, characterized in that: A fixing plate (7) is fixedly connected to the front side of the top of the bottom plate (2). An electric telescopic rod (12) is fixedly connected to the rear side of the fixing plate (7). The rear side of the telescopic end of the electric telescopic rod (12) is fixedly connected to the front side of the detection table (6).

6. The axial force test structure of a turbocharger according to claim 1, characterized in that: A limiting mechanism (4) is arranged on the top of the bottom plate (2). The number of the limiting mechanisms (4) is two. The limiting mechanism (4) includes two limiting columns (401), a magnet (402) and a clamping block (403). The bottom of the magnet (402) is fixedly connected to the top of the limiting column (401). The bottom of the clamping block (403) is fixedly connected to the top of the bottom plate (2). The bottom of the limiting column (401) passes through the clamping block (403) and extends into the inside of the base (9). The bottom of the magnet (402) is magnetically attracted to the top of the clamping block (403).

7. The axial force test structure of a turbocharger according to claim 1, characterized in that: A limiting block (10) is fixedly connected to the right side of the top of the bottom plate (2). The right side of the base (9) is in contact with the left side of the limiting block (10).

8. The axial force test structure of a turbocharger according to claim 1, characterized in that: Fixing holes (5) are formed at the four corners of the top of the bottom plate (2). Handles (3) are fixedly connected to both sides of the top of the bottom plate (2).

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