Fatigue test detection device for torsion bar of automobile steering device
By designing a testing device suitable for automotive steering gear torsion bars, the problems of narrow testing range and low accuracy of existing equipment have been solved. This enables universal testing of different types of torsion bars, reduces costs, and ensures the safety and testing accuracy of torsion bars before they leave the factory.
Patent Information
- Application Number
- CN202520355672.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The lack of universal and efficient torsion bar fatigue testing equipment for existing automotive steering systems results in a narrow testing range, low accuracy, and high cost, failing to meet pre-shipment safety testing requirements.
A detection device was designed, comprising a T-shaped platform, a torque sensor base, a chuck base, a cylinder base, a torque sensor, and a tension/compression sensor. By adjusting the distance of the T-slot and the rotation of the chuck, it is suitable for different models of steering gear torsion bars, achieving rotational torque and angle loading at frequencies of 1-20Hz, and completing 1 million cycle tests.
It enables universal testing of different models of torsion bars, reduces tooling costs, expands the scope of application, ensures the accuracy and safety of testing, and meets the requirements of fatigue durability testing before leaving the factory.
Smart Images
Figure CN223796275U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a detection device and, specifically relates to a kind of automobile steering gear torsion bar fatigue test detection device. BACKGROUND
[0002] Torsion bar fatigue assembly includes input shaft, torsion bar, screw rod, positioning pin and plug, as the very important safety part in automobile steering system, in the normal driving process of automobile, suddenly steering torsion bar fracture leads to steering failure, will directly bring the safety accident of personnel and automobile, and doing torsion bar fatigue test is particularly important, however, in automobile steering system, there is no universal test equipment, part test detection standard range is limited, cannot meet the requirement, leading to no this standard scheme (including: axial force load, rotation torque, angle, frequency) test bench, existing test bench still needs special tool to lock torsion bar fatigue assembly, tool cannot be universal, to reduce the cost of upstream and downstream industry chain of automobile, need to carry out fatigue detection to torsion bar before the automobile steering gear is shipped, to reach the safety production requirement.
[0003] There are similar detection devices on the market at present, but all have some drawbacks. For example, special tool equipment is needed, operation is cumbersome and high in cost; there are also problems such as narrow detection range and low accuracy. SUMMARY
[0004] The utility model aims at: in view of prior art deficiency no test bench, provide a kind of torsion bar fatigue test detection device and detection method of simple structure, convenient to use, and can be accurately detected before shipment Fatigue endurance, ensure that steering gear can be normally assembled.
[0005] The technical scheme of the utility model is:
[0006] A kind of automobile steering gear torsion bar fatigue test detection device, including T type platform, torque sensor base, tension and compression force sensor base, chuck base, cylinder base, torque sensor, tension and compression force sensor, chuck, cylinder, rotary groove cover, positioning sleeve, its characterized in that:
[0007] The torque sensor base, chuck base, cylinder base, tension and pressure sensor base are respectively fixed on the T-shaped platform by screws, the torque sensor is fixed on the sensor base by screws, the gap between the torque sensor rod and the torque sensor is locked by screws, and the gap between the inner hole of the coupling and the torque sensor is connected by small screws, the chuck is rotated into the chuck groove by rotating the ring-shaped strip, the chuck and the chuck fixing plate are connected by screws and nuts, the input shaft, the torsion rod, the plug and the screw are connected by the gap, the large hole of the screw is connected with the outer circle of the input shaft by the gap, the torsion rod and the screw rod are connected by the gap between the inner hole of the screw rod and the inner hole of the input shaft, the plug is connected with the tail of the screw by the thread, the small hole of the screw is locked by the positioning pin, the input shaft, the torsion rod and the screw are locked, the screw rod is put into the positioning sleeve, the rotating groove cover is locked by the thread, the one end of the positioning sleeve is connected with the inner thread of the tension and pressure sensor by the external thread, the inner thread of the sensor is connected with the screw rod of the tension and pressure sensor by the thread, the tension and pressure sensor shaft is connected with the tension and pressure sensor base by the gap, the cylinder is fixed on the cylinder base, and the torque of the end face of the screw rod is given by the tension and pressure sensor.
[0008] The T-shaped platform is in the shape of a rectangle, the platform has a T-shaped groove, the groove has a screw, the screw is connected with a nut, the front and rear distances can be adjusted at will, and various long and short parts are satisfied.
[0009] The two ends of the torque sensor base, the tension and pressure sensor base, the chuck base and the cylinder base are connected with the base by the fixed screw nut and the thread.
[0010] The torque sensor is fixed on the torque sensor base by the screw thread at one end, and the other end is connected with the torque sensor connecting rod by the gap.
[0011] The tension and pressure sensor is connected with the inner thread of the tension and pressure sensor by the thread of the positioning sleeve rod, the inner thread of the sensor is connected with the screw rod of the tension and pressure sensor by the thread, and the cylinder shaft is connected with the tension and pressure sensor base by the gap.
[0012] The chuck is rotated into the chuck groove by rotating the ring-shaped strip, the chuck jaw is adjusted by rotating the handle counterclockwise and clockwise, the chuck and the chuck fixing plate are connected by the screw and the nut, and the chuck base is connected.
[0013] The cylinder is connected with the cylinder base by the screw thread, and the axial load torque of the end face of the screw rod is given by the tension and pressure sensor.
[0014] The rotating groove cover is connected by the thread of the positioning sleeve.
[0015] A kind of car steering gear torsion bar fatigue test detection method, it is characterized in that: rotating groove cover, positioning sleeve fixed screw rod part, jaw is adjusted fixed input shaft by handle rotation, with the frequency of 1-20HZ range frequency loading rotation torque and angle, make angle curve reach the range of positive and negative 1-30 °, torque is 1-100N.m range rotation torque, pull pressure sensor axial force is applied in the range of 1-10KN axial load, complete 100 million cycles, after test completion torsion bar has no crack and other defects.
[0016] The beneficial effects of the utility model lie in:
[0017] 1、The automobile steering gear torsion bar fatigue test detection device completely meets the demand of no test table, and test standard also conforms to standard, test tool generalization can adjust the detection device, so that it can be applicable to different models of steering gear torsion bar, effectively expand its applicable range, improve universality, reduce tooling cost and test cost, solve the problem of no test table demand and outsourcing high cost
[0018] 2, T-shaped groove platform can meet front and back, left and right, angle installation requirements, suitable for detecting a variety of complex size products
[0019] 3、The utility model clamping chuck can meet the clamping method of torsion bar fatigue assembly or other shaft inner parts of various models and sizes, without designing separate tooling for locking input shaft end, saving cost
[0020] 4、The utility model device can meet: detecting qualified curve diagram angle curve and torque curve, with the frequency of 1-20HZ range frequency loading rotation torque and angle, make angle curve reach the range of positive and negative 1-30 °, torque is 1-100N.m range rotation torque, pull pressure sensor axial force is applied in the range of 1-10KN axial load, complete 100 million cycles. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the structure schematic diagram of the utility model;
[0022] Figure 2 It is the structure schematic diagram of the utility model Figure 1 A torsion bar fatigue assembly structure schematic diagram in the utility model;
[0023] Figure 3 It is the structure schematic diagram of the utility model clamping chuck;
[0024] Figure 4 It is the installation structure schematic diagram of the utility model torque sensor;
[0025] Figure 5 It is the structure schematic diagram of the utility model screw locking device;
[0026] Figure 6 is the structure diagram of the tension and pressure cylinder installation of the utility model.
[0027] In the figure: 1, T-shaped platform, 2, torque sensor base, 3, torque sensor rod, 4, torque sensor, 5, shaft coupling, 6, torque sensor, 7, small screw, 8, chuck base, 9, handle, 10, screw, 11, nut, 12, chuck fixing plate, 13, chuck, 14, clamping jaw, 15, input shaft, 16, screw rod, 17, torsion bar, 18, plug, 19, rotary groove cover, 20, positioning sleeve, 21, tension and pressure sensor, 22, tension and pressure sensor base, 23, fixing plate, 24, tension and pressure sensor shaft, 25, locking nut, 26, cylinder, 27, cylinder base. DETAILED DESCRIPTION
[0028] The automobile steering gear shaft detection device, it includes T-shaped platform 1 is equipped with torque sensor base 2, chuck base 8, cylinder base 27, tension and pressure sensor base 22 with screw 10 and nut 11 thread connection, torque sensor 6 is thread-connected on torque sensor base 2 with screw, torque sensor rod 3 and torque sensor 6 gap fit with screw 10 lock, and and shaft coupling 5 inner hole gap fit connection then with small screw 7 lock, chuck 13 is rotated into the slot in chuck 13 with rotating ring type strip by clamping jaw 14, clamping jaw 14 is rotated by handle 9 counterclockwise clockwise to adjust the size of circumference, chuck 13 and chuck fixing plate 12 are connected with screw 10 and nut 11, connect chuck base 8, input shaft 15, torsion bar 17, plug 18 and screw rod 16 gap fit connection, screw rod 16 big hole and input shaft 15 outer circle gap fit, torsion bar 17 and screw rod 16 rod hole, input shaft 15 inner hole gap fit, plug 18 and screw tail thread connection, with positioning pin 20 hit into screw small hole lock input shaft 15, torsion bar 17, screw 16, clamping jaw 14 clamps input shaft 15 outer circle end, screw rod 16 rod part is put into positioning sleeve 20, with rotary groove cover 19 is locked by thread rotation, positioning sleeve 20 one end outer thread connects tension and pressure sensor 21 inner thread, sensor inner thread and tension and pressure sensor shaft 24 rod thread connection, tension and pressure sensor shaft 24 is through tension and pressure sensor base 22 hole gap fit, cylinder is fixed with screw 10 and thread on cylinder base, through tension and pressure sensor 21 give screw 10 rod end face torque, start equipment on input shaft 15 torsion bar 17 exert rotation torque to 1-20HZ range frequency load rotation torque and angle, make angle curve reach positive and negative 1-30 ° range, torque is 1-100N.m range rotation torque, tension and pressure sensor 21 axial force exert 1-10KN range axial load, complete 100 million times cycle, after test completion torsion bar has no crack and other defects.
[0029] It is by T platform 1 is provided with torque sensor base 2, chuck base 8, cylinder base 27, pull pressure sensor base 22 with screw 10 and nut 11 thread fixing, torque sensor 6 is threadedly connected on torque sensor base 2 with screw 10, connecting torque sensor rod 3 and coupling 5, coupling is locked with small screw 7, chuck 13 connects chuck jaw 14, chuck jaw 14 is adjusted by rotating counterclockwise clockwise through handle 9, chuck 13 and chuck fixing plate 12 are connected and connected chuck base 8, input shaft 15, torsion bar 17, plug 18 are connected with screw 16 and locked with positioning pin 28, chuck jaw 14 clamps input shaft 15, screw 16 rod is put into positioning sleeve 20, and locked with rotating groove cover 19, positioning sleeve 20 connects pull pressure sensor 21, sensor is connected with pull pressure sensor shaft 24, fixed pull pressure sensor base 22 and fixed fixing plate 23, locking nut connects pull pressure sensor shaft 25, cylinder 26 is fixed on cylinder base 27, through pull pressure sensor 21 to screw 16 rod end face torque, start equipment to exert torque on input shaft 15 torsion bar 17, make torsion bar 17 left and right angle is positive and negative 7°, frequency is 8Hz, complete 7500000 cycles, after test completion, torsion bar has no crack and other defects.
[0030] The angle curve and torque curve of the qualified detection curve diagram: the rotating torque and angle are loaded with the frequency of 1-20HZ, the angle curve reaches positive and negative 1-30°, the torque is 1-100N.m, the axial force is applied with the axial load of 1-10KN, 10000000 cycles are completed, the test requirements of torsion bar fatigue are met, the stress conditions under various conditions such as normal driving, emergency steering, continuous curve, bumpy road section of automobile are simulated, whether the torsion bar crack and fracture are caused is detected.
Claims
1. A kind of automobile steering gear torsion bar fatigue test detection device, including T type platform, torque sensor base, tension and pressure sensor base, chuck base, cylinder base, torque sensor, tension and pressure sensor, chuck, cylinder, rotary groove cover, positioning sleeve, it is characterized in being that: Torque sensor base, chuck base, cylinder base, tension and pressure sensor base, respectively with screw fixed on T type platform, torque sensor is fixed on sensor base with screw, torque sensor stem and torque sensor gap fit are locked with screw, and connect with the inner hole clearance fit of coupling, chuck is rotated into chuck groove by rotating ring type strip, chuck and chuck fixed plate are connected with screw and nut cooperation, connect chuck base, input shaft, torsion bar, plug and screw clearance fit, screw big hole and input shaft outer circle clearance fit, torsion bar and screw rod inner hole, input shaft inner hole clearance fit, plug and screw tail threaded connection, screw small hole is locked input shaft, torsion bar, screw by positioning pin, jaw clamps input shaft outer circle end, screw rod is placed in positioning sleeve, rotary groove cover is locked by thread rotation, positioning sleeve one end outer thread connects tension and pressure sensor inner thread, sensor inner thread and tension and pressure sensor shaft threaded connection, tension and pressure sensor shaft is connected through tension and pressure sensor base hole clearance fit, cylinder is fixed on cylinder base, and end face torque is given to screw rod by tension and pressure sensor.
2. The automobile steering gear torsion bar fatigue test detection device according to claim 1, characterized in that: The T type platform is rectangular, and there is T type groove on the platform, the groove has screw inside, the screw is connected with nut, the front and rear distance can be adjusted at will, and various long and short parts are satisfied.
3. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 2, wherein: The torque sensor base, tension and pressure sensor base, chuck base, cylinder base two ends are connected with base by fixed screw nut and thread.
4. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 3, wherein: The torque sensor is fixed on torque sensor base by screw thread at one end, and the other end hole is connected with torque sensor connecting rod by clearance fit.
5. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 4, wherein: The tension and pressure sensor is connected with tension and pressure sensor inner thread by positioning sleeve rod thread, the sensor inner thread is connected with cylinder shaft threaded connection, the cylinder shaft is connected through tension and pressure sensor base hole clearance fit, and the cylinder is fixed on cylinder base by screw and thread.
6. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 5, wherein: The chuck is rotated into chuck groove by rotating ring type strip, the jaw is adjusted by anticlockwise clockwise rotation of handle, the chuck and chuck fixed plate are connected with screw and nut cooperation, and connect chuck base.
7. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 6, wherein: The cylinder is connected on cylinder base by screw thread, and the axial load torque is given to screw rod end face by tension and pressure sensor.
8. The device for detecting fatigue of a torsion bar of a steering gear of an automobile according to claim 7, wherein: The rotary groove cover is connected by positioning sleeve thread.