PVT test device for automobile turbocharging hose

Abstract

The utility model discloses a PVT test device for an automobile turbocharging hose. The PVT test device comprises a test module, a hydraulic power module, a mechanical arm module and a connecting pipe module, wherein a to-be-tested hose is arranged in the testing module, the vibration end of the mechanical arm module extends into the testing module and is used for applying six-degree-of-freedom vibration to the to-be-tested hose, and the hydraulic power module provides pressurized liquid for the testing module through the connecting pipe module; the test module simulates different temperature environments around the to-be-tested hose and enables the pressurized liquid to circulate in the to-be-tested hose, so that the device can truly simulate the change conditions of the internal medium temperature and the pulse pressure of the turbocharging pipe in actual work. The device provided by the utility model can truly simulate all possible various vibration conditions of the turbocharging pipe in actual work, wherein the vibration conditions comprise different vibration frequencies, amplitudes, six-degree-of-freedom vibration and three-axis vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of performance detection of automotive turbocharger hoses, in particular to a PVT testing device for automotive turbocharger hoses. Background Art

[0002] Currently, with the further development of the automotive industry, the performance requirements for automotive parts are becoming increasingly stringent, necessitating tests that simulate actual operating conditions. The automotive turbo hose PVT testing equipment can simulate the actual operating conditions of turbo hoses after installation on a vehicle to test their service life and performance. The automotive turbo hose PVT testing equipment includes a triaxial vibration fixture, a robot, a test piece fixed-end fixture, a test piece vibrating-end fixture, a high- and low-temperature environmental test cabinet, and a hydraulic power system. The test piece is placed in the high- and low-temperature environmental test cabinet, where high and low-temperature media circulate and are filled with a certain pulse pressure. One end of the test piece is fixed and the other end is mounted on the vibration fixture to simulate the actual vibration conditions after installation on the vehicle. However, current testing equipment only simulates actual vibration using a robotic arm, resulting in limitations in the simulated vibration effect and a significant gap between the actual situation and the actual vibration. Utility Model Content

[0003] In order to solve the problems existing in the background technology, the utility model proposes a PVT test device for automobile turbocharger hoses with realistic vibration simulation effect and strong practicality.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A PVT test device for automotive turbocharger hoses comprises a test module, a hydraulic power module, a robotic arm module and a connecting pipe module; wherein the hose to be tested is arranged in the test module, and the vibration end of the robotic arm module extends into the test module to apply six-degree-of-freedom vibration to the hose to be tested, and the hydraulic power module provides pressurized liquid to the test module through the connecting pipe module; the test module simulates different temperature environments around the hose to be tested and circulates the pressurized liquid in the hose to be tested, and the test module comprises an axial vibration unit, which is used to provide three mutually perpendicular axial vibrations to the hose to be tested connected thereto; the axial vibration unit comprises a second vibration end tooling, a vertical vibration module, a transverse sliding module, a longitudinal sliding module and a base; the transverse sliding module and the longitudinal sliding module are used to move the vertical vibration module on a horizontal plane; the second vibration end tooling is fixedly connected to the vertical vibration module via a connecting rod, and the vertical vibration module is used to vibrate the second vibration end tooling in a vertical direction.

[0006] Preferably, the test module also includes an outer shell, a frame and a fixed end tooling; two independent cabins are formed in the outer shell, namely a high and low temperature test cabin located at the upper part and an axial vibration debugging cabin located at the lower part; the frame is erected in the high and low temperature test cabin for installing the fixed end tooling.

[0007] Preferably, the middle part of the axial vibration unit is located in the axial vibration debugging cabin, and the second vibration end tooling extends into the interior through the opening on the bottom surface of the high and low temperature test cabin; one end of the connecting pipe module is connected to the fixed end tooling, and the other end is connected to the hydraulic power module.

[0008] Preferably, the high and low temperature test chamber provides a constant test temperature for the hose to be tested, and the test temperature range is -50°C to 160°C.

[0009] Preferably, the vertical vibration module includes a sliding frame, a slide rail assembly, a rotary electric cylinder, a fixed bearing, an eccentric assembly, a vibration assembly, a vertical slide and a connecting rod fixing portion; wherein:

[0010] The sliding frame is composed of a base plate, a back plate and two side plates. The fixed bearing is fixedly arranged on the base plate of the sliding frame. The output end of the rotary electric cylinder drives the input end of the eccentric assembly through the fixed bearing. The output end of the eccentric assembly is hinged to one end of the vibration assembly, and the other end of the vibration assembly is hinged to the vertical slide. The vertical slide is slidably connected to the back plate of the sliding frame through the slide rail assembly; the connecting rod fixing part is fixed on the vertical slide, and the connecting rod fixing part is used to connect the second vibration end tooling through the connecting rod.

[0011] Preferably, the vertical vibration module also includes an eccentricity adjustment electric cylinder and a distance meter. The eccentricity adjustment electric cylinder is arranged on the side plate of the sliding frame for adjusting the eccentricity of the eccentric component; the distance meter is arranged on the side of the sliding frame away from the eccentricity adjustment electric cylinder for measuring the eccentricity of the eccentric component.

[0012] Preferably, the eccentric assembly includes an adjustment locking portion, an adjustment portion, an eccentric input portion and an eccentric output portion; the adjustment locking portion is used to unlock the eccentric output portion when adjusting the eccentric assembly, and the adjustment portion is used to adjust the relative position of the eccentric input portion and the eccentric output portion.

[0013] Preferably, the robotic arm module includes a robotic arm and a first vibration end fixture, and the output end of the robotic arm is fixedly connected to the first vibration end fixture and extends into the interior of the high and low temperature test chamber through an opening on the side of the chamber.

[0014] Preferably, both the high and low temperature test chamber and the axial vibration debugging chamber are provided with doors. The door of the high and low temperature test chamber facilitates placement of the hose to be tested in the high and low temperature test chamber, and the door of the axial vibration debugging chamber facilitates debugging of the axial vibration unit.

[0015] Preferably, it also includes a base, which is set on the ground and carries the hydraulic power module and the robotic arm module. The bottom surface of the axial vibration unit is fixed on the ground. In order to fix the axial vibration unit to the bottom surface, holes are opened at corresponding positions on the base and the bottom surface of the axial vibration debugging cabin.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The device of the utility model can truly simulate the changes in the internal medium temperature and pulse pressure of the turbocharger pipe during actual operation.

[0018] 2. The device of the utility model can truly simulate the ambient temperature changes of the turbocharger pipe during actual operation.

[0019] 3. The device of the utility model can realistically simulate all possible vibration conditions of the turbocharger pipe during actual operation, including different vibration frequencies, amplitudes, six-degree-of-freedom vibrations and three-axis vibrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (the shell of the test module is hidden);

[0022] Figure 3 This is a three-dimensional schematic diagram of the combined structure of the robotic arm module and the test module of the present invention (the shell of the test module is hidden);

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the axial vibration unit of the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the vertical vibration module of the present utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the vertical vibration module of the present invention from another angle;

[0026] Figure 7 Schematic diagram of the three-dimensional structure of the eccentric component;

[0027] In the figure: 1. Test module, 2. Hydraulic power module, 3. Robotic arm module, 4. Connecting pipe module, 5. Base, 1-1. Outer shell, 1-2. Frame, 1-3. Fixed end tooling, 1-4. Axial vibration unit, 1-4-1 Second vibration end tooling, 1-4-2. Vertical vibration module, 1-4-3. Horizontal sliding module, 1-4-4. Longitudinal sliding module, 1-4-5. Base, 3-1. Robotic arm, 3-2. First vibration end tooling, A. High and low temperature test chamber, B. Axial vibration debugging chamber, a. Sliding frame, b. Slide rail assembly, c. Eccentric adjustment electric cylinder, d. Rotary electric cylinder, e. Fixed bearing, f. Eccentric assembly, g. Vibration assembly, h. Vertical slide, i. Connecting rod fixing part, j. Distance meter, f-1. Adjustment locking part, f-2. Adjustment part, f-3. Eccentric input part, f-4. Eccentric output part. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In order to clearly show the internal structure of the test module, the shell of the test module is hidden, such as Figure 2 、 Figure 3 shown.

[0030] like Figure 1 and Figure 2 As shown, the vehicle turbocharger hose PVT test device of the present invention includes a test module 1, a hydraulic power module 2, a robotic arm module 3, a connecting pipe module 4, and a base 5. The hose to be tested is placed in the test module, and the vibrating end of the robotic arm module 3 extends into the test module 1. The hydraulic power module 2 provides pressurized fluid to the test module 1 through the connecting pipe module 4. The test module 1 simulates different temperature environments around the hose to be tested and circulates the pressurized fluid through the hose. The test module 1 also applies axial vibration to the hose to be tested. The robotic arm module 3 is used to apply six-degree-of-freedom vibration to the hose to be tested. The base 5 is placed on the ground and supports the hydraulic power module 2 and robotic arm module 3.

[0031] like Figure 3 As shown, the test module 1 includes a test module housing 1-1, a frame 1-2, a fixed end tooling 1-3, and an axial vibration unit 1-4. The housing 1-1 is divided into two independent cabins, including a high and low temperature test cabin A located at the upper part and an axial vibration debugging cabin B located at the lower part. The frame 1-2 is installed in the high and low temperature test cabin A for installing the fixed end tooling 1-3.

[0032] The bottom surface of the axial vibration unit 1-4 is fixed to the ground. To secure the axial vibration unit 1-4 to the bottom surface, holes are opened in corresponding locations on the base 5 and the bottom surface of the axial vibration test chamber B. The middle portion of the axial vibration unit 1-4 is located within the axial vibration test chamber B, and the vibration end of the axial vibration unit 1-4 extends into the interior of the high-temperature test chamber A through an opening in the bottom surface of the high-temperature test chamber A. The connecting pipe module 4 is installed on the side wall of the high-temperature test chamber A, connecting the hydraulic power module 2 with the pipeline of the fixed end fixture 1-3, so that the hydraulic power module 2 can provide pressurized liquid input and output to the fixed end fixture 1-3. The manipulator module 3 includes a manipulator 3-1 and a first vibration end fixture 3-2. The output end of the manipulator 3-1 is fixedly connected to the first vibration end fixture 3-2 and extends into the interior of the high-temperature test chamber A through an opening on the side of the high-temperature test chamber A. The high-temperature test chamber A is used to maintain a constant temperature for the hose to be tested, ranging from -50°C to 160°C. Both the high and low temperature test chamber A and the axial vibration debugging chamber B are equipped with doors. The door of the high and low temperature test chamber A is used to facilitate the placement of the hose to be tested in the high and low temperature test chamber A, and the door of the axial vibration debugging chamber B is used to debug the axial vibration units 1-4.

[0033] When the utility model is used to perform an axial vibration test on a hose to be tested, the two ends of multiple hoses to be tested are respectively connected to the vibration ends of the axial vibration units 1-4 and the fixed end tooling 1-3, and they form a liquid circuit, and the test is completed by the liquid provided by the hydraulic power module 2 and the axial vibration provided by the axial vibration units 1-4.

[0034] When the utility model is used to perform a six-degree-of-freedom vibration test on a hose to be tested, the two ends of multiple hoses to be tested are respectively connected to the first vibration end tooling 3-2 and the fixed end tooling 1-3, and they form a liquid circuit, and the test is completed by the liquid provided by the hydraulic power module 2 and the six-degree-of-freedom vibration provided by the robotic arm 3-1.

[0035] like Figure 4 As shown, the axial vibration unit 1-4 includes a second vibration end fixture 1-4-1, a vertical vibration module 1-4-2, a transverse sliding module 1-4-3, a longitudinal sliding module 1-4-4, and a base 1-4-5. The base 1-4-5 is fixed to the ground and carries the longitudinal sliding module 1-4-4. The transverse sliding module 1-4-3 is mounted on the longitudinal sliding module 1-4-4, and the vertical vibration module 1-4-2 is mounted on the transverse sliding module 1-4-3. The second vibration end fixture 1-4-1 is mounted on the vertical vibration module 1-4-2 via a connecting rod; the output directions of the transverse sliding module 1-4-3 and the longitudinal sliding module 1-4-4 are arranged perpendicular to each other, so as to enable the second vibration end fixture 1-4-1 to slide on a horizontal plane.

[0036] like Figure 5 and Figure 6 As shown, the vertical vibration module 1-4-2 includes a sliding frame a, a slide rail assembly b, an eccentric adjustment cylinder c, a rotary cylinder d, a fixed bearing e, an eccentric assembly f, a vibration assembly g, a vertical slide h, a connecting rod fixing portion i, and a distance meter j. Among them, the sliding frame (a) is composed of a bottom plate, a back plate, and two side plates.

[0037] A fixed bearing e is fixedly mounted on the bottom plate of the slide a. The output end of the rotary electric cylinder d drives the input end of the eccentric assembly f through the fixed bearing e. The output end of the eccentric assembly f is hingedly connected to one end of the vibration assembly g, the other end of which is hingedly connected to the vertical slide h. The vertical slide h is slidably connected to the back plate of the slide a via the slide rail assembly b. During use, the rotary electric cylinder d rotates the eccentric assembly f, which drives the vibration assembly g, which pushes the vertical slide h to reciprocate along the direction of the slide rail assembly b. The connecting rod fixing portion i is fixed to the vertical slide h and is used to connect to the second vibration end fixture 1-4-1 via the connecting rod. The eccentric adjustment electric cylinder c is mounted on the side plate of the slide a for adjusting the eccentricity of the eccentric assembly f. The rangefinder j is mounted on the side of the slide a away from the eccentric adjustment electric cylinder c for measuring the eccentricity of the eccentric assembly f.

[0038] like Figure 7 As shown, the eccentric assembly f includes an adjustment lock f-1, an adjustment part f-2, an eccentric input part f-3, and an eccentric output part f-4. To adjust the eccentricity, first unlock the adjustment lock f-1 to allow the eccentric assembly f to be adjusted. Then, connect the output end of the eccentric adjustment electric cylinder c to the adjustment part f-2. Then, use the output end of the eccentric adjustment electric cylinder c to rotate the adjustment part f-2, causing the eccentric output part f-4 to slide relative to the eccentric input part f-3, increasing or decreasing the eccentricity. After adjustment is complete, relock the adjustment lock f-1 and disconnect the output end of the eccentric adjustment electric cylinder c from the adjustment part f-2.

[0039] When testing with an axial vibration unit, limit switches are installed in all three axial directions to prevent vibration from exceeding the limit and causing derailment. The horizontal and vertical amplitudes can reach up to 50mm, with a maximum frequency of 5Hz; the vertical amplitude can reach up to 15mm, with a frequency of up to 20Hz.

[0040] The openings on the bottom and sides of the high and low temperature test chamber A are equipped with accordion covers, which can isolate the influence of the external temperature of the high and low temperature test chamber A while not affecting the extension of the robotic arm and the connecting rod.

[0041] When conducting the test, perform the following test steps:

[0042] Step 1: Debug the test module, hydraulic power module and robotic arm module to the test state;

[0043] Step 2: Adjust the position and angle of the fixed end fixture on the frame according to the shape and length of the hose to be tested, and lock it;

[0044] Step 3: Select the vibration mode during the test. When performing a six-degree-of-freedom vibration test, adjust the angle of the first vibration end fixture and lock it; when performing an axial vibration test, adjust the angle of the second vibration end fixture and lock it.

[0045] Step 4: Install the hose to be tested between the fixed end fixture and the first vibrating end fixture or the second vibrating end fixture.

[0046] Step 5: Set the temperature of the high and low temperature test chamber, set the temperature and pulse pressure of the liquid in the hose to be tested through the hydraulic power module, and set the vibration mode of the robotic arm module or axial vibration unit, including the vibration path, amplitude, and frequency.

[0047] Step 6: Set the test cycle, start the utility model, and complete the test of the hose to be tested.

Claims

1. A PVT test device for an automobile turbocharger hose, comprising a test module (1), a hydraulic power module (2), a mechanical arm module (3) and a connecting pipe module (4); wherein: The hose to be tested is arranged in the test module, the vibration end of the mechanical arm module (3) extends into the test module (1) for applying six-degree-of-freedom vibration to the hose to be tested, the hydraulic power module (2) provides pressurized liquid to the test module (1) through the connecting pipe module (4); the test module (1) simulates different temperature environments around the hose to be tested and circulates the pressurized liquid in the hose to be tested, and is characterized in that: the test module (1) includes an axial vibration unit (1-4), the axial vibration unit (1-4) is used to provide three mutually perpendicular axial vibrations to the hose to be tested connected thereto; the axial vibration The unit (1-4) includes a second vibration end tooling (1-4-1), a vertical vibration module (1-4-2), a transverse sliding module (1-4-3), a longitudinal sliding module (1-4-4) and a base (1-4-5); the transverse sliding module (1-4-3) and the longitudinal sliding module (1-4-4) are used to move the vertical vibration module (1-4-2) on a horizontal plane; the second vibration end tooling (1-4-1) is fixedly connected to the vertical vibration module (1-4-2) via a connecting rod, and the vertical vibration module (1-4-2) is used to make the second vibration end tooling (1-4-1) vibrate in a vertical direction.

2. The automotive turbocharger hose PVT testing device according to claim 1, characterized in that: The test module (1) further comprises a shell (1-1), a frame (1-2) and a fixed end tooling (1-3); two independent chambers are formed in the shell (1-1), namely a high and low temperature test chamber (A) located at the upper portion and an axial vibration debugging chamber (B) located at the lower portion; the frame (1-2) is set up in the high and low temperature test chamber (A) and is used for installing the fixed end tooling (1-3).

3. The automotive turbocharger hose PVT testing device according to claim 2, characterized in that: The middle portion of the axial vibration unit (1-4) is located in the axial vibration debugging chamber (B), and the second vibration end tooling (1-4-1) extends into the interior of the high and low temperature test chamber (A) through an opening in the bottom surface thereof; one end of the connecting pipe module (4) is connected to the fixed end tooling (1-3), and the other end is connected to the hydraulic power module (2).

4. The automotive turbocharger hose PVT testing device according to claim 2, characterized in that: The high and low temperature test chamber (A) provides a constant test temperature for the hose to be tested, and the test temperature range is -50°C to 160°C.

5. The automotive turbocharger hose PVT testing device according to claim 1, characterized in that: The vertical vibration module (1-4-2) comprises a sliding frame (a), a slide rail assembly (b), a rotary electric cylinder (d), a fixed bearing (e), an eccentric assembly (f), a vibration assembly (g), a vertical slide plate (h) and a connecting rod fixing portion (i); wherein: The sliding frame (a) is composed of a base plate, a back plate and two side plates, the fixed bearing (e) is fixedly arranged on the base plate of the sliding frame (a), the output end of the rotary electric cylinder (d) drives the input end of the eccentric component (f) through the fixed bearing (e), the output end of the eccentric component (f) is hinged to one end of the vibration component (g), the other end of the vibration component (g) is hinged to the vertical slide (h), and the vertical slide (h) is slidably connected to the back plate of the sliding frame (a) through the slide rail component (b); the connecting rod fixing part (i) is fixed on the vertical slide (h), and the connecting rod fixing part (i) is used to connect the second vibration end tooling (1-4-1) through the connecting rod.

6. The automotive turbocharger hose PVT testing device according to claim 5, characterized in that: The vertical vibration module (1-4-2) further includes an eccentricity adjustment electric cylinder (c) and a distance meter (j). The eccentricity adjustment electric cylinder (c) is arranged on a side plate of the sliding frame (a) and is used to adjust the eccentricity of the eccentric component (f); the distance meter (j) is arranged on a side of the sliding frame (a) away from the eccentricity adjustment electric cylinder (c) and is used to measure the eccentricity of the eccentric component (f).

7. The automotive turbocharger hose PVT testing device according to claim 5, characterized in that: The eccentric component (f) includes an adjustment locking part (f-1), an adjustment part (f-2), an eccentric input part (f-3) and an eccentric output part (f-4); the adjustment locking part (f-1) is used to unlock the eccentric output part (f-4) when adjusting the eccentric component (f), and the adjustment part (f-2) is used to adjust the relative position of the eccentric input part (f-3) and the eccentric output part (f-4).

8. The automotive turbocharger hose PVT testing device according to claim 2, characterized in that: The robotic arm module (3) comprises a robotic arm (3-1) and a first vibration end fixture (3-2); the output end of the robotic arm (3-1) is fixedly connected to the first vibration end fixture (3-2) and extends into the interior of the high and low temperature test chamber (A) through an opening on the side thereof.

9. The automotive turbocharger hose PVT testing device according to claim 2, characterized in that: The high and low temperature test chamber (A) and the axial vibration debugging chamber (B) are both provided with doors. The door of the high and low temperature test chamber (A) facilitates the placement of a hose to be tested in the high and low temperature test chamber (A), and the door of the axial vibration debugging chamber (B) facilitates the debugging of the axial vibration unit (1-4).

10. The automotive turbocharger hose PVT testing device according to claim 2, characterized in that: The invention also includes a base (5), which is arranged on the ground and carries the hydraulic power module (2) and the mechanical arm module (3). The bottom surface of the axial vibration unit (1-4) is fixed on the ground. In order to fix the axial vibration unit (1-4) to the bottom surface, holes are opened at corresponding positions of the base (5) and the bottom surface of the axial vibration debugging cabin (B).

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