Loading rigid fixing device for torsional fatigue test of upper steering system
By designing a rigid fixing device for torsional fatigue testing of the upper steering system, the problem of insufficient loading torque in high-frequency, high-torsional fatigue testing was solved, achieving efficient and accurate testing, extending equipment life, and meeting the testing requirements of high frequency and high load.
Patent Information
- Application Number
- CN202423205377.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing technologies are unable to effectively apply torque in high-frequency, high-torsional fatigue testing, resulting in short service life and insufficient accuracy of testing equipment, which cannot meet the high-frequency, high-load testing requirements of automotive steering systems.
A rigid fixing device for torsional fatigue testing of upper steering systems is designed. It adopts components such as a lower fixing seat, an upper fixing plate, a longitudinal column, a transverse column, and a PIN tooling. The device is firmly connected by connecting flanges and bolts, replacing the traditional magnetic powder brake and motor-loaded brake, and providing high-frequency, high-torque torsional fatigue testing.
It improves testing efficiency and equipment lifespan, enhances test loading accuracy, meets the high-frequency, high-load testing requirements of automotive steering systems, and provides a basis for product problem analysis and design verification.
Smart Images
Figure CN223637123U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steering system technical field, concretely is a kind of for the torsional fatigue test loading rigidity fixing device of upper steering system. BACKGROUND
[0002] In the field of automotive steering system, the upper steering system includes steering column and steering intermediate shaft.
[0003] The upper steering system of car is the steering mechanism component in steering system, used to transmit torque and collapse energy absorption to protect the safety of driver in the process of accidental collision. The upper steering system of car belongs to security part. It plays a vital role in ensuring vehicle driving safety, reducing traffic accidents and protecting the personal safety of driver. The torsional fatigue test of the upper steering system of car must be carried out in laboratory at the initial stage of product development to meet the requirements of vehicle safety operation and legal regulations. For the increasingly competitive automobile industry, the specification requirements for vehicle fatigue test are becoming more and more stringent. The upper steering system of car will require high-frequency and high-load torsional fatigue test at the early development stage. SUMMARY
[0004] The utility model discloses to overcome the insufficient of prior art, provide a kind of for the torsional fatigue test loading rigidity fixing device of upper steering system, upper steering column front end interface servo drive, tail end interface the fixing device, servo drive torque closed-loop control output high-frequency torsional torque.
[0005] To achieve the above object, a kind of for the torsional fatigue test loading rigidity fixing device of upper steering system is designed, including lower fixed base, upper fixed plate, longitudinal column, transverse column, characterized by: the top of lower fixed base is connected with upper fixed plate, one end of longitudinal column is connected on upper fixed plate, the other end of longitudinal column is connected with the bottom of transverse column connecting plate through longitudinal column connecting plate, the side of transverse column connecting plate is connected with one end of transverse column, the other end of transverse column is connected with PIN tooling through adapter flange.
[0006] The top of the PIN tooling is connected with intermediate shaft or column output shaft.
[0007] The bottom of the transverse column and longitudinal column is connected with the side of transverse column connecting plate and the top of upper fixed plate respectively.
[0008] The transverse column connecting plate is right-angle frame structure, the right-angle surface of one side of transverse column connecting plate is connected with transverse column by bolt, the right-angle surface of the other side of transverse column connecting plate is connected with longitudinal column connecting plate by bolt.
[0009] The bottom of longitudinal column connecting plate and the outer circumferential surface of longitudinal column are uniformly provided with a plurality of reinforcing ribs.
[0010] Two sides of the upper fixed plate are connected with lifting handles respectively.
[0011] The lower fixed seats are in convex structure, and two lower fixed seats are respectively located at front and rear positions of the bottom of the upper fixed plate.
[0012] The top of the lower fixed seat is connected with the upper fixed plate, and the bottom of the lower fixed seat is connected with the test bench.
[0013] Compared with the prior art, the utility model provides a kind of for upper steering system torsional fatigue test loading rigidity fixing device, this structure is simple to operate, compact and reliable, convenient and practical;For the torsional fatigue test of upper steering system, greatly improve the test efficiency, equipment service life and test loading precision, indicate direction for product problem analysis and design verification. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structure perspective drawing of the utility model.
[0015] Figure 2 It is the structure front view of the utility model.
[0016] Figure 3 It is the structure side view of the utility model.
[0017] Figure 4 It is the structure schematic view of the utility model installed on test bench. CONCRETE EMBODIMENT
[0018] The utility model will be further described according to the drawings.
[0019] As shown in Figures 1 to 3 The top of lower fixed seat 8 is connected with upper fixed plate 7, one end of upper fixed plate 7 is connected with longitudinal column 9, the other end of longitudinal column 9 is connected with the bottom of transverse column connecting plate 4 through longitudinal column connecting plate 5, one end of transverse column 3 is connected with the side of transverse column connecting plate 4, and the other end of transverse column 3 is connected with PIN tooling 1 through adapter flange 2.
[0020] The top of PIN tooling 1 is connected with intermediate shaft or pipe column output shaft.
[0021] The bottom of transverse column 3 and longitudinal column 9 is connected with the side of transverse column connecting plate 4 and the top of upper fixed plate 7 respectively through connecting flange.
[0022] Transverse column connecting plate 4 is right-angle frame structure, the right-angle surface of one side of transverse column connecting plate 4 is connected with transverse column 3 through bolt, and the right-angle surface of the other side of transverse column connecting plate 4 is connected with longitudinal column connecting plate 5 through bolt.
[0023] The bottom of the longitudinal column connecting plate 5 and the outer circumferential surface of the longitudinal column 9 are evenly provided with a plurality of reinforcing ribs 6.
[0024] Two sides of the upper fixed plate 7 are connected with hoisting handles 10.
[0025] The lower fixed seat 8 is provided with two, and the lower fixed seat 8 is a convex structure, and the two lower fixed seats 8 are located at the front and rear positions of the bottom of the upper fixed plate 7.
[0026] The top of the lower fixed seat 8 is connected with the upper fixed plate 7, and the bottom of the lower fixed seat 8 is connected with the test bench.
[0027] For the device, the existing rotating fatigue table equipment is modified. The existing rotating fatigue table load loading device is mostly a magnetic powder brake or a motor loading brake. The magnetic powder brake and the motor loading brake are both adjusted by the strength of the current to generate a certain binding force between the stator and the rotor, so as to add a corresponding braking torque to the rotor. This braking mode is more suitable for fatigue loading rotation, and cannot be responsible for the high-frequency high-torsion torsional fatigue scene.
[0028] In order to improve the test capacity and the service life of the equipment braking module, the device is designed to replace the magnetic powder brake and the load motor. The magnetic powder brake and the load motor are perfectly and efficiently solved in the high-frequency high-torsion fatigue test loading.
[0029] The utility model discloses structure innovation design, easy operation is compact and firm, and is convenient and practical. The device is used for the torsional fatigue test of the upper steering system, greatly improves the test efficiency, the service life of equipment and the test loading precision, and points out the direction for product problem analysis and design verification.
Claims
1. A rigid fixture for torsional fatigue testing of an upturning system, comprising a lower fixture base, an upper fixture plate, longitudinal uprights, and transverse uprights, characterized in that: The top of the lower fixing base (8) is connected with the upper fixing plate (7), one end of the upper fixing plate (7) is connected with the longitudinal column (9), the other end of the longitudinal column (9) is connected with the bottom of the transverse column connecting plate (4) through the longitudinal column connecting plate (5), one end of the transverse column connecting plate (4) is connected with the side of the transverse column (3), and the other end of the transverse column (3) is connected with the PIN tool (1) through the adapter flange (2).
2. A rigid fixture for torsional fatigue testing of an upshift system, according to claim 1, characterized in that: The top of the PIN tool (1) is connected with a middle shaft or a pipe column output shaft.
3. A rigid fixture for torsional fatigue testing of an upshift system, according to claim 1, wherein: The bottom of the transverse column (3) and the longitudinal column (9) is connected with the side of the transverse column connecting plate (4) and the top of the upper fixing plate (7) respectively through connecting flanges.
4. A rigid fixture for torsional fatigue testing of updriving systems as defined in claim 1 or 3, characterized in that: The transverse column connecting plate (4) is a right-angle frame structure, the side of the transverse column connecting plate (4) is connected with the transverse column (3) through bolts, and the other side of the transverse column connecting plate (4) is connected with the longitudinal column connecting plate (5) through bolts.
5. A rigid fixture for torsional fatigue testing of updriving systems as defined in claim 1, wherein: The bottom of the longitudinal column connecting plate (5) and the outer circumferential surface of the longitudinal column (9) are uniformly provided with a plurality of reinforcing ribs (6).
6. A rigid fixture for torsional fatigue testing of updriving systems as defined in claim 1, wherein: Two lifting handles (10) are arranged on the two sides of the upper fixing plate (7).
7. A rigid fixture for torsional fatigue testing of an upshift system, according to claim 1, wherein: Two lower fixing bases (8) are arranged on the front and rear positions of the bottom of the upper fixing plate (7) and are in convex structures.
8. A rigid fixture for torsional fatigue testing of updriving systems as defined in claim 1 or 7, characterized in that: The top of the lower fixing base (8) is connected with the upper fixing plate (7), and the bottom of the lower fixing base (8) is connected with the test bench.