Performance detection device for automobile steering intermediate shaft

Abstract

The invention relates to the technical field of automobile steering intermediate shaft detection, and particularly discloses an automobile steering intermediate shaft performance detection device which comprises a sliding unit which comprises a sliding assembly arranged horizontally, a bearing seat connected to the sliding assembly in a sliding mode, a connecting shaft arranged on the bearing seat and two first universal joints. The axial direction of the connecting shaft is the same as the moving direction of the bearing seat; the two lifting units are correspondingly arranged at the two ends of the sliding unit, and each lifting unit comprises a lifting assembly, a first motor connected to the lifting assembly in a lifting mode and a second universal joint installed at the power output end of the first motor; the first ends of the two steering middle shafts are installed on the two first universal joints in a one-to-one correspondence mode, and the second ends of the two steering middle shafts are installed on the second universal joints of the two lifting units in a one-to-one correspondence mode. According to the invention, linkage detection tests can be simultaneously carried out on torsion and sliding of the steering intermediate shaft.

Description

Technical Field

[0001] The invention relates to the technical field of automobile steering intermediate shaft detection, in particular to an automobile steering intermediate shaft performance detection device. Background Art

[0002] The function of the automobile steering shaft is to transfer the steering torque applied by the driver to the steering wheel to the steering gear. Its upper part is fixedly connected to the steering wheel, and its lower part is connected to the steering gear. The steering shaft passes through the steering column tube and is supported on the bearings and bushings in the column tube. At present, the performance test of the automobile steering intermediate shaft cannot simultaneously meet the torsion and sliding linkage test requirements installed according to the spatial angle position of the actual vehicle, and the verification effect of the steering intermediate shaft is poor. Summary of the invention

[0003] The purpose of the present invention is to provide a performance detection device for an automobile steering intermediate shaft, which can simultaneously perform linkage detection tests on the torsion and sliding of the steering intermediate shaft.

[0004] In order to achieve the above object, the present invention provides a vehicle steering intermediate shaft performance detection device, comprising:

[0005] A sliding unit, comprising a sliding assembly arranged horizontally, a bearing seat slidably connected to the sliding assembly, a connecting shaft provided on the bearing seat, and two first universal joints, wherein both ends of the connecting shaft extend out of the bearing seat and are connected to the two first universal joints in a one-to-one correspondence, and the axial direction of the connecting shaft is the same as the moving direction of the bearing seat; and

[0006] Two sets of lifting units are correspondingly arranged at two ends of the sliding unit, and the lifting units include a lifting assembly, a first motor liftingly connected to the lifting assembly, and a second universal joint installed at a power output end of the first motor;

[0007] There are two steering intermediate shafts, the first ends of the two steering intermediate shafts are correspondingly installed on the two first universal joints, and the second ends of the two steering intermediate shafts are correspondingly installed on the second universal joints of the two groups of lifting units.

[0008] In some embodiments, the sliding assembly includes a slide rail, a slider, a second motor and a sliding screw, the second motor is installed at the end of the slide rail, the slide rail has a slide groove, the sliding screw is arranged in the slide groove, the second motor is transmission-connected to the sliding screw, the slider is threadedly connected to the sliding screw and slidably connected to the slide rail, and the bearing seat is installed on the slider.

[0009] In some embodiments, the sliding assembly includes a nut, which is mounted on the bottom of the sliding block and is threadedly connected to the sliding screw.

[0010] In some embodiments, both the first motor and the second motor are servo motors.

[0011] In some embodiments, the lifting assembly includes a sleeve, a lifting screw, a handwheel and a lifting block. The lifting screw is arranged in the sleeve, the upper end of the lifting screw extends out of the sleeve and is connected to the handwheel, the side wall of the sleeve has an opening extending along the lifting direction, and the lifting block is threadedly connected to the lifting screw and extends out of the opening to be connected to the first motor.

[0012] In some embodiments, the lifting assembly includes a mounting sleeve, which is disposed on the outer circumference of the sleeve, and the lifting block is connected to the first motor through the mounting sleeve.

[0013] In some embodiments, the lifting assembly includes a rotating disk, and the mounting sleeve is connected to the first motor through the rotating disk.

[0014] In some embodiments, the lifting assembly includes a rotating bearing, which is disposed in the sleeve and installed at the lower end of the lifting screw.

[0015] In some embodiments, a table is included, and the sliding unit and the lifting unit are both installed on the table.

[0016] In some embodiments, the first motor has a main shaft, an end of the main shaft forms an external spline, the second universal joint has an internal spline hole, and the external spline of the main shaft is installed in the internal spline hole of the second universal joint.

[0017] The present invention provides a vehicle steering intermediate shaft performance detection device, which has the following beneficial effects compared with the prior art:

[0018] The first end of the steering intermediate shaft is connected to the connecting shaft on the sliding assembly through the first universal joint, and the sliding assembly can drive the steering intermediate shaft to slide, so as to perform sliding detection. The second end of the steering intermediate shaft is connected to the first motor on the lifting assembly through the second universal joint, and the first motor can drive the steering intermediate shaft to twist, so as to perform twisting detection. In this way, the twisting and sliding of the steering intermediate shaft can be simultaneously tested in linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a vehicle steering intermediate shaft performance detection device provided in some embodiments of the present invention.

[0020] Figure 2 A schematic diagram of a partially enlarged structure of a sliding component of a vehicle steering intermediate shaft performance detection device provided in some embodiments of the present invention.

[0021] Figure 3 A schematic diagram of a partially enlarged structure of a steering intermediate shaft installed in a vehicle steering intermediate shaft performance detection device provided in some embodiments of the present invention.

[0022] Figure 4 This is a schematic diagram of an enlarged partial cross-section structure of a sleeve of a vehicle steering intermediate shaft performance detection device provided in some embodiments of the present invention.

[0023] In the figure: 1. sliding unit; 11. sliding assembly; 111. sliding rail; 112. sliding block; 113. second motor; 114. sliding screw; 115. nut; 12. bearing seat; 13. connecting shaft; 14. first universal joint; 2. lifting unit; 21. lifting assembly; 211. sleeve; 211a, opening; 212. lifting screw; 213. hand wheel; 214. lifting block; 215. mounting sleeve; 216. rotating disk; 22. first motor; 221. main shaft; 23. second universal joint; 3. intermediate steering shaft; 4. table. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0025] It should be understood that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0026] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1-4As shown, the automobile steering intermediate shaft performance detection device provided by the embodiment of the present invention comprises a sliding unit 1 and two sets of lifting units 2. The sliding unit 1 drives the steering intermediate shaft 3 to slide, and the lifting unit 2 drives the steering intermediate shaft 3 to rise and fall to achieve angle adjustment, and drives the steering intermediate shaft 3 to twist, so that the torsion and sliding of the steering intermediate shaft can be tested in linkage at the same time.

[0028] The sliding unit 1 includes a sliding assembly 11 arranged horizontally, a bearing seat 12 slidably connected to the sliding assembly 11, a connecting shaft 13 provided on the bearing seat 12, and two first universal joints 14. The two ends of the connecting shaft 13 extend out of the bearing seat 12 and are connected to the two first universal joints 14 in a one-to-one correspondence. The axial direction of the connecting shaft 13 is the same as the moving direction of the bearing seat 12. In this way, the sliding assembly 11 drives the connecting shaft 13 on the bearing seat 12 to slide, thereby being able to drive the steering intermediate shaft 3 connected to the connecting shaft 13 through the first universal joint 14 to slide.

[0029] Two sets of lifting units 2 are correspondingly arranged at both ends of the sliding unit 1, and the lifting unit 2 includes a lifting assembly 21, a first motor 22 liftingly connected to the lifting assembly 21, and a second universal joint 23 installed at the power output end of the first motor 22. In this way, the lifting unit 2 drives the first motor 22 to move up and down, thereby driving the steering intermediate shaft 3 connected to the first motor 22 through the second universal joint 23 to move up and down, thereby adjusting the deflection angle of the steering intermediate shaft 3, and the first motor 22 can drive the steering intermediate shaft 3 to twist.

[0030] In this embodiment, two steering intermediate shafts 3 are provided, and the first ends of the two steering intermediate shafts 3 are mounted on the two first universal joints 14 in a one-to-one correspondence, and the second ends of the two steering intermediate shafts 3 are mounted on the second universal joints 23 of the two lifting units 2 in a one-to-one correspondence. The two ends of the steering intermediate shaft 3 are connected by transmission through the first universal joint 14 and the second universal joint 23, which can realize variable-angle power transmission, and is conducive to angle adjustment of the steering intermediate shaft 3 to simulate actual working conditions.

[0031] Based on the above-mentioned structural setting, the first end of the steering intermediate shaft 3 is connected to the connecting shaft 13 on the sliding assembly 11 through the first universal joint 14, and the sliding assembly 11 can drive the steering intermediate shaft 3 to slide, so as to perform sliding detection. The second end of the steering intermediate shaft 3 is connected to the first motor 22 on the lifting assembly 21 through the second universal joint 23, and the steering intermediate shaft 3 can be driven to twist through the first motor 22, so as to perform twisting detection. In this way, the twisting and sliding of the steering intermediate shaft 3 can be simultaneously tested for linkage.

[0032] like Figure 2As shown, in some embodiments, the sliding assembly 11 includes a slide rail 111, a slider 112, a second motor 113 and a sliding screw 114, the second motor 113 is installed at the end of the slide rail 111, the slide rail 111 has a slide groove, the sliding screw 114 is arranged in the slide groove, the second motor 113 is in transmission connection with the sliding screw 114, the slider 112 is threadedly connected with the sliding screw 114 and is slidably connected to the slide rail 111, and the bearing seat 12 is installed on the slider 112. In this way, the sliding screw 114 is driven to rotate by the second motor 113, driving the slider 112 and the bearing seat 12 to slide back and forth on the slide rail 111, thereby realizing the reciprocating sliding of the connecting shaft 13, and realizing the sliding of the sliding pair of the steering intermediate shaft 3 caused by the bouncing of the automobile chassis.

[0033] In some embodiments, the sliding assembly 11 includes a nut 115, which is mounted on the bottom of the slider 112 and is threadedly connected to the sliding screw 114. In this way, the sliding screw 114 rotates to drive the nut 115 to move along the slide groove of the slide rail 111, and at the same time drives the slider 112 and the bearing seat 12 to slide back and forth on the slide rail 111.

[0034] Specifically, in some embodiments, both the first motor 22 and the second motor 113 are servo motors. The two sets of first motors 22 are driven synchronously to make the two steering intermediate shafts 3 twist smoothly. Sensors are configured on the first motor 22 and the second motor 113 as needed to detect angle torque, sliding stroke, sliding force and sliding frequency.

[0035] like Figure 4 As shown, in some embodiments, the lifting assembly 21 includes a sleeve 211, a lifting screw 212, a hand wheel 213 and a lifting block 214. The lifting screw 212 is arranged in the sleeve 211. The upper end of the lifting screw 212 extends out of the sleeve 211 and is connected to the hand wheel 213. The side wall of the sleeve 211 has an opening 211a extending along the lifting direction. The lifting block 214 is threadedly connected to the lifting screw 212 and extends out of the opening 211a to be connected to the first motor 22. In this way, the lifting screw 212 can be driven to rotate by rotating the hand wheel 213, so that the lifting block 214 slides up and down along the lifting screw 212, thereby driving the first motor 22 to slide up and down, so as to adjust the angle of the steering intermediate shaft 3, and the steering intermediate shaft 3 is driven by the first motor 22 to adjust the torque.

[0036] Further, in some embodiments, the lifting assembly 21 includes a mounting sleeve 215, which is disposed on the outer periphery of the sleeve 211, and the lifting block 214 is connected to the first motor 22 through the mounting sleeve 215. The mounting sleeve 215 is used to make the lifting block 214 slide up and down more smoothly.

[0037] Further, in some embodiments, the lifting assembly 21 includes a rotating disk 216, and the mounting sleeve 215 is connected to the first motor 22 via the rotating disk 216. The rotating disk 216 can rotate autonomously, thereby adjusting the deflection angle of the first motor 22.

[0038] In some embodiments, the lifting assembly 21 includes a rotating bearing, which is disposed in the sleeve 211 and mounted on the lower end of the lifting screw 212. The rotating bearing can make the lifting screw 212 rotate smoothly.

[0039] like Figure 1 As shown, in some embodiments, a table 4 is included, and the sliding unit 1 and the lifting unit 2 are both mounted on the table 4. The table 4 enables the sliding unit 1 and the lifting unit 2 to be assembled as a whole.

[0040] like Figure 3 As shown, in some embodiments, the first motor 22 has a main shaft 221, the end of the main shaft 221 forms an external spline, the second universal joint 23 has an internal spline hole, the external spline of the main shaft is installed in the internal spline hole of the second universal joint 23, and the connection is fixed by a locking bolt. In the above specific connection method, the bearing capacity of the connection structure between the main shaft 221 of the first motor 22 and the second universal joint 23 is strong, and the first universal joint 14 can also be installed according to the above method.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle steering intermediate shaft performance detection device, characterized in that: include: A sliding unit, comprising a sliding assembly arranged horizontally, a bearing seat slidably connected to the sliding assembly, a connecting shaft provided on the bearing seat, and two first universal joints, wherein both ends of the connecting shaft extend out of the bearing seat and are connected to the two first universal joints in a one-to-one correspondence, and the axial direction of the connecting shaft is the same as the moving direction of the bearing seat; and Two sets of lifting units are correspondingly arranged at two ends of the sliding unit, and the lifting units include a lifting assembly, a first motor liftingly connected to the lifting assembly, and a second universal joint installed at a power output end of the first motor; There are two steering intermediate shafts, the first ends of the two steering intermediate shafts are correspondingly installed on the two first universal joints, and the second ends of the two steering intermediate shafts are correspondingly installed on the second universal joints of the two groups of lifting units.

2. The vehicle steering intermediate shaft performance detection device according to claim 1, characterized in that: The sliding assembly includes a slide rail, a slider, a second motor and a sliding screw. The second motor is installed at the end of the slide rail. The slide rail has a slide groove. The sliding screw is arranged in the slide groove. The second motor is transmission-connected to the sliding screw. The slider is threadedly connected to the sliding screw and is slidingly connected to the slide rail. The bearing seat is installed on the slider.

3. The vehicle steering intermediate shaft performance detection device according to claim 2, characterized in that: The sliding assembly comprises a nut, which is mounted on the bottom of the sliding block and is threadedly connected to the sliding screw.

4. The vehicle steering intermediate shaft performance detection device according to claim 2, characterized in that: The first motor and the second motor are both servo motors.

5. The vehicle steering intermediate shaft performance detection device according to claim 1, characterized in that: The lifting assembly includes a sleeve, a lifting screw, a handwheel and a lifting block. The lifting screw is arranged in the sleeve. The upper end of the lifting screw extends out of the sleeve and is connected to the handwheel. The side wall of the sleeve has an opening extending along the lifting direction. The lifting block is threadedly connected to the lifting screw and extends out of the opening to be connected to the first motor.

6. The vehicle steering intermediate shaft performance detection device according to claim 5, characterized in that: The lifting assembly includes a mounting sleeve, which is arranged on the outer circumference of the sleeve, and the lifting block is connected to the first motor through the mounting sleeve.

7. The vehicle steering intermediate shaft performance detection device according to claim 6, characterized in that: The lifting assembly includes a rotating disk, and the mounting sleeve is connected to the first motor via the rotating disk.

8. The vehicle steering intermediate shaft performance detection device according to claim 5, characterized in that: The lifting assembly comprises a rotating bearing, which is arranged in the sleeve and installed at the lower end of the lifting screw rod.

9. The vehicle steering intermediate shaft performance detection device according to claim 1, characterized in that: It comprises a platform, and the sliding unit and the lifting unit are both installed on the platform.

10. The vehicle steering intermediate shaft performance detection device according to claim 1, characterized in that: The first motor has a main shaft, an end of the main shaft forms an external spline, the second universal joint has an internal spline hole, and the external spline of the main shaft is installed in the internal spline hole of the second universal joint.

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