CN220583253U - Device for detecting NVH of constant-speed driving shaft assembly - Google Patents
Device for detecting NVH of constant-speed driving shaft assembly Download PDFInfo
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- CN220583253U CN220583253U CN202322319784.1U CN202322319784U CN220583253U CN 220583253 U CN220583253 U CN 220583253U CN 202322319784 U CN202322319784 U CN 202322319784U CN 220583253 U CN220583253 U CN 220583253U
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 abstract description 19
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- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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Abstract
The utility model discloses a device for detecting NVH of a constant-speed driving shaft assembly, which belongs to the technical field of automobile part detection and comprises a detection table, wherein an axial derivative force clamp moving end and an axial derivative force clamp fixing end are arranged on the detection table, the constant-speed driving shaft assembly is arranged between the axial derivative force clamp moving end and the axial derivative force clamp fixing end, a first flange is connected to the axial derivative force clamp fixing end, and the first flange is locked with a flange plate of experimental equipment through bolts; according to the utility model, the state of the constant-speed driving shaft assembly can be corrected through the set adjusting bolt, and the vibration and abnormal sound of the constant-speed driving shaft assembly in the test process can be reduced through adjusting the tightness of the constant-speed driving shaft assembly on the device, so that the interference of the constant-speed driving shaft assembly and the device to the test result is reduced, and the result is more accurate.
Description
Technical Field
The utility model belongs to the technical field of automobile part detection, and particularly relates to a device for detecting NVH of a constant-speed drive shaft assembly.
Background
The constant speed drive shaft assembly is a very important component of the transmission structure of an automobile. NVH, noise, vibration and harshness, is a comprehensive problem in measuring the quality of automobile manufacture, and is the most direct and superficial feeling to automobile users. The NVH problem of vehicles is one of the concerns of various large-vehicle manufacturing enterprises and parts enterprises in the International automotive industry.
In application, the constant-speed driving shaft in the automobile industry needs to meet various indexes of vehicle NVH and transmission efficiency design requirements, and provides comfortable driving experience and higher energy conversion efficiency for vehicle users so as to reduce vehicle use cost. Therefore, accurate measurement of the NVH problem of the drive shaft assembly is critical and necessary.
In addition, after a test piece of the constant-speed driving shaft assembly is installed, the state of the test piece cannot be corrected, so that vibration and abnormal sound can be generated by the constant-speed driving shaft in the test process due to high-speed rotation, and the accuracy of a final test result is affected.
Disclosure of Invention
The present utility model is directed to an apparatus for NVH detection of a constant velocity drive shaft assembly that solves the above-mentioned problems encountered in the background art.
The aim of the utility model can be achieved by the following technical scheme:
the device for detecting NVH of the constant-speed driving shaft assembly comprises a detection table, wherein an axial derivative force clamp moving end and an axial derivative force clamp fixing end are arranged on the detection table, a constant-speed driving shaft assembly is arranged between the axial derivative force clamp moving end and the axial derivative force clamp fixing end, a first flange is connected to the axial derivative force clamp fixing end and is locked with a flange plate of experimental equipment through a bolt, an involute internal spline is arranged on the inner wall of the first flange, and a fixed end universal joint external spline of the constant-speed driving shaft assembly is aligned with the involute internal spline on the inner wall of the first flange and is locked through a locking nut;
the axial derivative force clamp moving end is provided with a second flange which is locked with a flange plate of experimental equipment through bolts, the inner wall of the second flange is provided with an involute internal spline, the external spline of a universal joint at the moving end of the constant speed driving shaft assembly is aligned to the involute internal spline of the inner wall of the second flange to be installed, and the axial derivative force clamp moving end is also provided with an adjusting bolt for adjusting tightness.
Further, a circular clamp spring is arranged between the second flange and the moving end of the axial derivative force clamp.
Further, a sliding groove is further formed in the detection table, a sliding block is connected in the sliding groove in a sliding mode, a driving air cylinder is arranged on the inner wall of the sliding groove, the output end of the driving air cylinder is connected with the sliding block, and the moving end of the axial derivative force clamp is mounted on the sliding block.
Further, an adjusting table is further arranged on the detecting table, a meter frame is arranged on the adjusting table, and a dial indicator is arranged on the meter frame.
Further, the second flange and the first flange are eight-hole flanges.
The utility model has the beneficial effects that:
according to the utility model, the state of the constant-speed driving shaft assembly can be corrected through the set adjusting bolt, and the vibration and abnormal sound of the constant-speed driving shaft assembly in the test process can be reduced through adjusting the tightness of the constant-speed driving shaft assembly on the device, so that the interference of the constant-speed driving shaft assembly and the device to the test result is reduced, and the result is more accurate.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
the drawings illustrate:
1. a detection table; 2. an axial derivative force clamp moving end; 3. a fixed end of the axial derivative force clamp; 4. a first flange; 5. external spline of fixed end universal joint; 6. a constant speed drive shaft assembly; 7. a second flange; 8. circular clamp springs; 9. adjusting a bolt; 10. a chute; 11. a slide block; 12. a driving cylinder; 13. an adjustment table; 14. a watch stand; 15. a dial indicator; 16. a lock nut; 17. the movable end universal joint is externally splined.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The device for detecting NVH of the constant-speed driving shaft assembly comprises a detection table 1, wherein the detection table 1 is provided with an axial derivative force clamp moving end 2 and an axial derivative force clamp fixing end 3, a constant-speed driving shaft assembly 6 is arranged between the axial derivative force clamp moving end 2 and the axial derivative force clamp fixing end 3, the axial derivative force clamp moving end 2 is equivalent to an output interface of an automobile gearbox, and the axial derivative force clamp fixing end 3 is equivalent to an automobile hub, so that the real state of the constant-speed driving shaft assembly 6 in the running process of the automobile can be simulated; the fixed end 3 of the axial derivative force clamp is connected with a first flange 4, the first flange 4 is locked with a flange plate of experimental equipment through bolts, an involute internal spline is arranged on the inner wall of the first flange 4, the external spline 5 of a fixed end universal joint of the constant speed drive shaft assembly 6 is aligned with the involute internal spline of the inner wall of the first flange 4 to be installed, the fixed end is locked through a locking nut 16, the movable end 2 of the axial derivative force clamp is provided with a second flange 7, the second flange 7 is locked with the flange plate of experimental equipment through bolts, the inner wall of the second flange 7 is provided with the involute internal spline, the external spline 17 of the movable end universal joint of the constant speed drive shaft assembly 6 is aligned with the involute internal spline of the inner wall of the second flange 7 to be installed, and the movable end 2 of the axial derivative force clamp is also provided with an adjusting bolt 9 for adjusting tightness. Involute internal splines are arranged in the first flange 4 and the second flange 7, so that the involute internal splines can be conveniently and well matched with involute external splines at two ends of the constant-speed driving shaft; the detection equipment is connected with the testing machine through the first flange 4 and the second flange 7, and the real NVH state in the running process of the constant-speed driving shaft is simulated through the software and the hardware of the testing machine, so that effective test data support can be provided for successful development of the constant-speed driving shaft assembly 6; the second flange 7 and the first flange 4 are eight-hole flanges, and the eight high-strength bolts with 8.8-level M12 specifications are matched with the eight-hole flanges, so that the firmness between the detection equipment and the experimental machine can be improved, and the mechanical abrasion caused by shaking can be reduced. A circular clamp spring 8 is arranged between the second flange 7 and the moving end 2 of the axial derivative force clamp, the circular clamp spring 8 is arranged to detect whether an external spline 17 of a universal joint at the moving end of the constant-speed driving shaft assembly 6 is aligned with an internal spline of the moving end 2 of the axial derivative force clamp, and when the external spline is aligned, the circular clamp spring 8 is in a spring-open state; the state of the constant-speed driving shaft assembly 6 can be corrected by the adjusting bolt 9, and the vibration and abnormal sound of the constant-speed driving shaft assembly 6 in the test process can be reduced by adjusting the tightness of the constant-speed driving shaft assembly 6 on the device, so that the interference of the constant-speed driving shaft assembly 6 on the test result is reduced, and the result is more accurate.
As shown in fig. 1, the detection table 1 is further provided with a sliding groove 10, a sliding block 11 is slidably connected in the sliding groove 10, a driving cylinder 12 is arranged on the inner wall of the sliding groove 10, the output end of the driving cylinder 12 is connected with the sliding block 11, and the axial derivative force clamp moving end 2 is mounted on the sliding block 11. The distance between the movable end 2 of the axial derivative force clamp and the fixed end 3 of the axial derivative force clamp can be adjusted by driving the movement of the cylinder 12, so that the constant-speed driving shaft assemblies 6 with different lengths can be conveniently detected; the detecting table 1 is also provided with an adjusting table 13, the adjusting table 13 is provided with a dial indicator frame 14, the dial indicator frame 14 is provided with a dial indicator 15, the dial indicator 15 is adjusted through the adjusting table 13, the dial indicator frame 14 can be adjusted in a telescopic mode, the position of the dial indicator 15 is adjusted according to the specific position of the constant-speed driving shaft assembly 6, and the dial indicator 15 is used for detecting and recording the jump of the middle shaft lever of the constant-speed driving shaft assembly 6.
When the constant-speed driving shaft assembly is used, the external spline 17 of the universal joint at the moving end of the constant-speed driving shaft assembly 6 is aligned with the involute internal spline in the moving end 2 of the axial derivative force clamp, and whether the circular clamp spring 8 is normally sprung or not is checked; then, the external spline 5 of the fixed end universal joint of the constant speed driving shaft assembly 6 is aligned with the involute internal spline in the fixed end 3 of the axial derivative force clamp, and the locking nut 16 is locked, and the locking torque is 225-275Nm; then, the first flange 4 on the fixed end 3 of the axial derivative force clamp is aligned with a flange plate of test equipment and is installed and locked by 8 high-strength bolts with 8.8-level M12 specification, and the locking moment is 65-87Nm; the second flange 7 on the movable end 2 of the axial derivative force clamp is aligned with a flange plate of test equipment and is installed and locked by 8 high-strength bolts with 8.8-level M12 specification, and the locking moment is 65-87Nm, so that the constant-speed driving shaft assembly 6 is installed on the test equipment; then starting the test equipment, setting the rotating speed of the test equipment to be 100rpm, detecting and recording the runout of the middle shaft lever of the constant-speed driving shaft assembly 6 through the dial indicator 15; and stopping the test equipment, adjusting different tightness of the adjusting bolt 9 by using an inner hexagonal wrench, restarting the test equipment, detecting and recording the jump of the intermediate shaft rod until the jump of the intermediate shaft rod of the constant speed driving shaft assembly 6 meets the specified requirement.
The foregoing is merely illustrative and explanatory of the principles of the utility model, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the utility model or beyond the scope of the appended claims.
Claims (5)
1. The device for detecting NVH of the constant-speed driving shaft assembly comprises a detection table (1), and is characterized in that an axial derivative force clamp moving end (2) and an axial derivative force clamp fixing end (3) are arranged on the detection table (1), a constant-speed driving shaft assembly (6) is arranged between the axial derivative force clamp moving end (2) and the axial derivative force clamp fixing end (3), a first flange (4) is connected to the axial derivative force clamp fixing end (3), the first flange (4) is locked with a flange plate of experimental equipment through a bolt, involute internal splines are arranged on the inner wall of the first flange (4), and a fixed end universal joint external spline (5) of the constant-speed driving shaft assembly (6) is aligned with the involute internal spline on the inner wall of the first flange (4) to be installed and locked through a locking nut (16);
the axial derivative force clamp moving end (2) is provided with a second flange (7), the second flange (7) is locked with a flange plate of experimental equipment through bolts, the inner wall of the second flange (7) is provided with involute internal splines, the outer universal joint splines (17) of the moving end of the constant speed driving shaft assembly (6) are aligned with the involute internal splines of the inner wall of the second flange (7) and are installed, and the axial derivative force clamp moving end (2) is also provided with adjusting bolts (9) for adjusting tightness.
2. A device for NVH detection of a constant velocity drive shaft assembly according to claim 1, characterized in that a circular snap spring (8) is arranged between the second flange (7) and the axially derived force clamp moving end (2).
3. The device for detecting NVH of the constant-speed driving shaft assembly according to claim 1, wherein a sliding groove (10) is further formed in the detecting table (1), a sliding block (11) is connected in the sliding groove (10) in a sliding mode, a driving air cylinder (12) is arranged on the inner wall of the sliding groove (10), the output end of the driving air cylinder (12) is connected with the sliding block (11), and the moving end (2) of the axially-derived force clamp is installed on the sliding block (11).
4. Device for NVH detection of a constant velocity drive shaft assembly according to claim 1, characterized in that the detection table (1) is further provided with an adjusting table (13), the adjusting table (13) is provided with a dial gauge stand (14), and the dial gauge stand (14) is provided with a dial gauge (15).
5. A device for NVH detection of a constant velocity drive shaft assembly according to claim 1, characterized in that the second flange (7) and the first flange (4) are eight hole flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319784.1U CN220583253U (en) | 2023-08-28 | 2023-08-28 | Device for detecting NVH of constant-speed driving shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322319784.1U CN220583253U (en) | 2023-08-28 | 2023-08-28 | Device for detecting NVH of constant-speed driving shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220583253U true CN220583253U (en) | 2024-03-12 |
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ID=90109447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322319784.1U Active CN220583253U (en) | 2023-08-28 | 2023-08-28 | Device for detecting NVH of constant-speed driving shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220583253U (en) |
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2023
- 2023-08-28 CN CN202322319784.1U patent/CN220583253U/en active Active
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