CN217819387U - Structure for durability test of steering rocker arm of commercial vehicle - Google Patents
Structure for durability test of steering rocker arm of commercial vehicle Download PDFInfo
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- CN217819387U CN217819387U CN202222161315.7U CN202222161315U CN217819387U CN 217819387 U CN217819387 U CN 217819387U CN 202222161315 U CN202222161315 U CN 202222161315U CN 217819387 U CN217819387 U CN 217819387U
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- rocker arm
- connecting rod
- steering rocker
- seat
- sliding groove
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Abstract
The utility model provides a structure for commercial car turns to rocking arm endurance test, its characterized in that: the test platform comprises a steering rocker arm, a rocker arm seat, a first connecting rod, a second connecting rod, a force sensor, a third connecting rod, a hydraulic cylinder, a thrust seat and a test platform; a spline shaft is fixedly arranged on the front side surface of the rocker arm seat, and the axial direction of the spline shaft is arranged along the horizontal direction; a cylinder seat is arranged on the right side surface of the thrust seat; the lower end of the steering rocker arm is provided with a spline hole; the tail of a shell of the hydraulic cylinder is hinged to a cylinder base, the head of a piston rod of the hydraulic cylinder is connected with the left end of a first connecting rod, the right end of the first connecting rod is connected with the left end of a force sensor, the left end of a second connecting rod is connected with the right end of the force sensor, the right end of the second connecting rod is hinged to the left end of a third connecting rod, the right end of the third connecting rod is hinged to the upper end of a steering rocker arm, and a spline hole of the steering rocker arm is sleeved on a spline of a spline shaft. The structure is adopted to carry out the durability test of the steering rocker arm, and the test efficiency is high and the cost is low.
Description
Technical Field
The utility model relates to a vehicle manufacturing technical field, especially a structure that is used for commercial car to turn to rocking arm endurance test.
Background
In the development process of a commercial vehicle, endurance tests are usually required to be carried out on steering system parts, particularly a steering rocker arm, in the prior art, the steering rocker arm is carried on a test vehicle for verification, but the method is difficult to measure the limit use working condition of the steering rocker arm, the vehicle is required to be fully loaded and steer in situ all the time, the endurance and reliability of the steering rocker arm cannot be rapidly and effectively verified, the test process is time-consuming and labor-consuming, the cost is high, and the strength verification of the steering rocker arm under the maximum steering resistance moment of n times in situ cannot be carried out.
SUMMERY OF THE UTILITY MODEL
Problem to the background art, the utility model provides a structure for commercial car turns to rocking arm endurance test to can't effectively verify fast among the solution prior art and turn to rocking arm endurance reliability, and the problem of test efficiency low, with high costs.
In order to realize the utility model discloses a purpose, the utility model provides a structure for commercial car turns to rocking arm endurance test, its innovation point lies in: the test device comprises a steering rocker arm, a rocker arm seat, a first connecting rod, a second connecting rod, a force sensor, a third connecting rod, a hydraulic cylinder, a thrust seat and a test platform; a spline shaft is fixedly arranged on the front side surface of the rocker arm seat, and the axial direction of the spline shaft is arranged along the horizontal direction; a cylinder seat is arranged on the right side surface of the thrust seat; the lower end of the steering rocker arm is provided with a spline hole;
the rocker arm seat and the cylinder seat are both fixedly arranged on the table-board of the test platform; the tail part of a shell of the hydraulic cylinder is hinged with the cylinder seat, the head part of a piston rod of the hydraulic cylinder is connected with the left end of the first connecting rod, the right end of the first connecting rod is connected with the left end of the force sensor, the left end of the second connecting rod is connected with the right end of the force sensor, the right end of the second connecting rod is hinged with the left end of the third connecting rod, the right end of the third connecting rod is hinged with the upper end of the steering rocker arm, and a spline hole of the steering rocker arm is sleeved on a spline of the spline shaft; the axes of the hydraulic cylinder, the first connecting rod, the second connecting rod, the force sensor and the third connecting rod are arranged in a collinear way.
Preferably, the axes of the hydraulic cylinder, the first connecting rod, the second connecting rod, the force sensor and the third connecting rod are all arranged horizontally.
Preferably, the right end of the third connecting rod is a spherical hinge, and the spherical hinge is hinged with the upper end of the steering rocker arm.
As an optimization, the rocker arm seat comprises a stand column and a connecting block; the front side surface of the upright post is provided with a sliding groove which is vertically arranged, the rear side surface of the connecting block is provided with a sliding block which is arranged in the sliding groove, and the connecting block can slide up and down along the sliding groove and can be fixed at any position of the sliding groove; the spline shaft is arranged on the front side face of the connecting block.
Preferably, the front end of the spline shaft is provided with a threaded section, the threaded section is sleeved with a nut, and the nut is used for axially positioning the lower end part of the steering rocker arm.
Adopt the utility model discloses a method has following beneficial effect: because this application test structure is mounting structure and the working method of steering rocker arm on the simulation real car, and test simple structure, and is easy and simple to handle, need not whole car experiment can conveniently acquire data such as endurance reliability and intensity of steering rocker arm, and efficiency of software testing improves greatly, and test cost greatly reduced.
Drawings
The drawings of the present invention are described below.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a steering rocker arm; 2. a rocker arm seat; 3. a first link; 4. a second link; 5. a force sensor; 6. a third link; 7. a hydraulic cylinder; 8. a thrust seat; 9. a test platform; 10. a cylinder base; 11. a nut; 21. a column; 22. and (4) connecting the blocks.
Detailed Description
The present invention will be further described with reference to the following examples.
The structure for the endurance test of the steering rocker arm of the commercial vehicle shown in the attached figure 1 comprises a steering rocker arm 1, a rocker arm seat 2, a first connecting rod 3, a second connecting rod 4, a force sensor 5, a third connecting rod 6, a hydraulic cylinder 7, a thrust seat 8 and a test platform 9; a spline shaft is fixedly arranged on the front side surface of the rocker arm seat 2, and the axial direction of the spline shaft is arranged along the horizontal direction; a cylinder seat 10 is arranged on the right side surface of the thrust seat 8; the lower end of the steering rocker arm 1 is provided with a spline hole;
the rocker arm seat 2 and the cylinder seat 10 are both fixedly arranged on the table-board of the test platform 9; the tail of the shell of the hydraulic cylinder 7 is hinged to the cylinder base 10, the head of the piston rod of the hydraulic cylinder 7 is connected with the left end of the first connecting rod 3, the right end of the first connecting rod 3 is connected with the left end of the force sensor 5, the left end of the second connecting rod 4 is connected with the right end of the force sensor 5, the right end of the second connecting rod 4 is hinged to the left end of the third connecting rod 6, the right end of the third connecting rod 6 is hinged to the upper end of the steering rocker arm 1, and the spline hole of the steering rocker arm 1 is sleeved on the spline of the spline shaft; the axes of the hydraulic cylinder 7, the first connecting rod 3, the second connecting rod 4, the force sensor 5 and the third connecting rod 6 are arranged in a collinear way.
In order to improve the force transmission efficiency and facilitate moment calculation, the axes of the hydraulic cylinder 7, the first connecting rod 3, the second connecting rod 4, the force sensor 5 and the third connecting rod 6 are all horizontally arranged.
In order to be closer to the actual stress of the real vehicle mounting structure and the steering rocker arm, the right end of the third connecting rod 6 is provided with a spherical hinge head, and the spherical hinge head is hinged with the upper end of the steering rocker arm 1.
In order to facilitate the adjustment of the installation position of the steering rocker arm, the rocker arm seat 2 comprises a stand column 21 and a connecting block 22; a sliding groove is formed in the front side face of the upright post 21 and is vertically arranged, a sliding block is arranged on the rear side face of the connecting block 22 and is arranged in the sliding groove, and the connecting block 22 can slide up and down along the sliding groove and can be fixed at any position of the sliding groove; the spline shaft is provided on the front side of the connecting block 22.
In order to ensure that the steering rocker arm is more reliably fixed, the front end of the spline shaft is provided with a threaded section, the threaded section is sleeved with a nut 11, and the nut 11 is used for axially positioning the lower end part of the steering rocker arm 1.
During the test, sine wave loading force with corresponding magnitude is applied to the steering rocker arm through the hydraulic cylinder, the steering rocker arm is cycled for 30 ten thousand times at the frequency of 1.5Hz, the machine is stopped every 1.5 ten thousand times, and whether the steering rocker arm body has cracks or not is checked.
Claims (6)
1. The utility model provides a structure that is used for commercial car steering rocker arm endurance test which characterized in that: the device comprises a steering rocker arm (1), a rocker arm seat (2), a first connecting rod (3), a second connecting rod (4), a force sensor (5), a third connecting rod (6), a hydraulic cylinder (7), a thrust seat (8) and a test platform (9); a spline shaft is fixedly arranged on the front side surface of the rocker arm seat (2), and the axial direction of the spline shaft is arranged along the horizontal direction; a cylinder seat (10) is arranged on the right side surface of the thrust seat (8); the lower end of the steering rocker arm (1) is provided with a spline hole;
the rocker arm seat (2) and the cylinder seat (10) are both fixedly arranged on the table surface of the test platform (9); the tail of a shell of the hydraulic cylinder (7) is hinged to the cylinder base (10), the head of a piston rod of the hydraulic cylinder (7) is connected with the left end of the first connecting rod (3), the right end of the first connecting rod (3) is connected with the left end of the force sensor (5), the left end of the second connecting rod (4) is connected with the right end of the force sensor (5), the right end of the second connecting rod (4) is hinged to the left end of the third connecting rod (6), the right end of the third connecting rod (6) is hinged to the upper end of the steering rocker arm (1), and a spline hole of the steering rocker arm (1) is sleeved on a spline of the spline shaft; the axes of the hydraulic cylinder (7), the first connecting rod (3), the second connecting rod (4), the force sensor (5) and the third connecting rod (6) are arranged in a collinear way.
2. The structure for the endurance test of the steering rocker arm of the commercial vehicle according to claim 1, wherein: the axes of the hydraulic cylinder (7), the first connecting rod (3), the second connecting rod (4), the force sensor (5) and the third connecting rod (6) are all horizontally arranged.
3. The structure for a durability test of a steering rocker arm of a commercial vehicle according to claim 1 or 2, characterized in that: the right end of the third connecting rod (6) is a spherical hinge head, and the spherical hinge head is hinged with the upper end of the steering rocker arm (1).
4. The structure for a durability test of a steering rocker arm of a commercial vehicle according to claim 1 or 2, characterized in that: the rocker arm seat (2) comprises a stand column (21) and a connecting block (22); a sliding groove is formed in the front side face of the upright post (21), the sliding groove is vertically arranged, a sliding block is arranged on the rear side face of the connecting block (22), the sliding block is arranged in the sliding groove, and the connecting block (22) can slide up and down along the sliding groove and can be fixed at any position of the sliding groove; the spline shaft is arranged on the front side surface of the connecting block (22).
5. The structure for durability test of steering rocker arm of commercial vehicle according to claim 3, characterized in that: the rocker arm seat (2) comprises an upright post (21) and a connecting block (22); a sliding groove is formed in the front side face of the upright post (21), the sliding groove is vertically arranged, a sliding block is arranged on the rear side face of the connecting block (22), the sliding block is arranged in the sliding groove, and the connecting block (22) can slide up and down along the sliding groove and can be fixed at any position of the sliding groove; the spline shaft is arranged on the front side surface of the connecting block (22).
6. The structure for a durability test of a steering rocker arm of a commercial vehicle according to claim 1 or 2, characterized in that: the front end of the spline shaft is provided with a thread section, a nut (11) is sleeved on the thread section, and the nut (11) is used for axially positioning the lower end part of the steering rocker arm (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161315.7U CN217819387U (en) | 2022-08-17 | 2022-08-17 | Structure for durability test of steering rocker arm of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161315.7U CN217819387U (en) | 2022-08-17 | 2022-08-17 | Structure for durability test of steering rocker arm of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217819387U true CN217819387U (en) | 2022-11-15 |
Family
ID=83974846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161315.7U Active CN217819387U (en) | 2022-08-17 | 2022-08-17 | Structure for durability test of steering rocker arm of commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217819387U (en) |
-
2022
- 2022-08-17 CN CN202222161315.7U patent/CN217819387U/en active Active
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