A universal tooling for various strength test of steering knuckle

Abstract

The application provides a universal tool suitable for various strength tests of steering knuckles, which comprises a floor, a rear upper control arm replacement tool fixing seat fixedly installed on the top of the floor, a front upper control arm replacement tool fixing seat fixedly installed on the top of the floor, and a rear lower control arm replacement tool fixing seat fixedly installed on the top of the floor. The application realizes the universality of different specifications and models of steering knuckle tests through the floor, the assembly hole, the rear upper control arm replacement tool fixing seat, the front upper control arm replacement tool fixing seat, the rear lower control arm replacement tool fixing seat, the front lower control arm replacement tool fixing seat, the steering drag link replacement tool fixing seat, the connecting arm, the threaded column, the rear upper control arm replacement tool, the front upper control arm replacement tool, the rear lower control arm replacement tool, the front lower control arm replacement tool and the straight pin.

Description

Technical Field

[0001] This invention relates to the field of steering knuckle testing technology, and in particular to a universal tooling suitable for various types of strength tests on steering knuckles. Background Technology

[0002] The steering knuckle is one of the main components of a car steering axle. It enables the car to drive stably and transmits the driving direction sensitively. Its function is to bear the load of the front and rear of the car, support and drive the wheels to rotate around the kingpin so that the car can turn. Due to the key role of the steering knuckle in the car parts, it is necessary to conduct strength tests on the steering knuckle. In the strength test of the steering knuckle, its control arm is usually replaced by a tooling.

[0003] Currently, strength tests on steering knuckles are conducted using separate fixtures for each strength test. There is no universal fixture that can encompass all strength tests (such as ultimate strength braking, upper control arm ultimate strength, lower control arm ultimate strength, steering tie rod ultimate strength, simulated curb impact, etc.); furthermore, there is no universal fixture that can be matched with steering knuckles of different sizes and models.

[0004] Therefore, we propose a universal tooling suitable for various strength tests of steering knuckles to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a universal tooling suitable for various strength tests of steering knuckles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A universal fixture suitable for various strength tests of steering knuckles includes a floor. A rear upper control arm replacement fixture mounting base, a front upper control arm replacement fixture mounting base, a rear lower control arm replacement fixture mounting base, a front lower control arm replacement fixture mounting base, and a steering tie rod replacement fixture mounting base are all fixedly mounted on the top of the floor. The outer walls of each of the rear upper control arm replacement fixture mounting base, front upper control arm replacement fixture mounting base, rear lower control arm replacement fixture mounting base, front lower control arm replacement fixture mounting base, and steering tie rod replacement fixture mounting base have mounting holes. A straight pin is rotatably connected to the inner wall of each mounting hole. A first ball joint bearing is rotatably sleeved on the outer wall of the straight pin. The outer wall of the first ball joint bearing is fixed... A connecting arm is connected, and a threaded post is fixedly connected to the outer wall of the connecting arm. The outer wall of the threaded post is respectively threaded with a rear upper control arm replacement fixture, a front upper control arm replacement fixture, a rear lower control arm replacement fixture, a front lower control arm replacement fixture, and a steering tie rod replacement fixture. A second ball joint bearing is fixedly installed on the top of the rear upper control arm replacement fixture, the front upper control arm replacement fixture, the rear lower control arm replacement fixture, the front lower control arm replacement fixture, and the steering tie rod replacement fixture. The second ball joint bearing is rotatably connected to the same connector. The outer wall of the connector is rotatably connected to a steering knuckle body. The outer wall of the steering knuckle body is fixedly connected to a half shaft, a wheel hub bearing, and a brake disc replacement fixture by bolts. The top of the brake disc replacement fixture is fixedly connected to a tire replacement fixture by bolts. The outer wall of the tire replacement fixture is provided with a testing mechanism.

[0008] Preferably, the testing mechanism includes two tire edge force loading point supports. The outer walls of the two tire edge force loading point supports are fixedly connected to the outer wall of the tire substitute tooling. The outer walls of the two tire edge force loading point supports are provided with through holes. The inner walls of the through holes are slidably connected with pins. The outer walls of the pins are rotatably fitted with force loading joints. The testing equipment (hydraulic actuator) is connected to the force loading joints, and the required force is applied to perform the strength test of the steering knuckle body.

[0009] Preferably, the rear upper control arm replacement tooling fixing seat cooperates with the rear upper control arm replacement tooling through a threaded post, and the overall length of the rear upper control arm replacement tooling is adjusted by setting the threaded post.

[0010] Preferably, the front upper control arm replacement tooling fixing seat is engaged with the front upper control arm replacement tooling via a threaded post.

[0011] Preferably, the rear lower control arm replacement tooling fixing seat cooperates with the rear lower control arm replacement tooling through a threaded post.

[0012] Preferably, the front lower control arm replacement tooling fixing seat is engaged with the front lower control arm replacement tooling via a threaded post.

[0013] Preferably, the steering tie rod replacement tooling mounting base is engaged with the steering tie rod replacement tooling via a threaded post.

[0014] Preferably, the outer wall of the steering knuckle body is fixedly connected with a caliper bracket as a substitute tooling by bolts.

[0015] Preferably, the outer wall of the floor is provided with a plurality of mounting holes evenly distributed, and the outer wall of the tire replacement tool is provided with a plurality of round holes evenly distributed. The tire replacement tool is flipped and installed onto the floor by passing bolts through the round holes and mounting holes.

[0016] Preferably, the brake disc is fitted onto the wheel hub bearing and the half shaft as a substitute for the tooling.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] This solution achieves universality in testing steering knuckles of different specifications and models by setting up a floor, assembly holes, replacement fixtures for the rear upper control arm, front upper control arm, rear lower control arm, and steering tie rod, connecting arms, threaded columns, and replacement fixtures for the rear upper control arm, front upper control arm, rear lower control arm, and steering tie rod, along with direct pins. It also allows for adjusting the spatial installation angle, achieving universality in testing steering knuckle bodies of different specifications and models. After completing the ultimate strength braking test, the floor is removed, flipped over, and fixed to the floor through the round holes and bolts on the tire replacement fixture. This allows for the ultimate strength test of the replacement fixtures for the rear upper control arm, front upper control arm, rear lower control arm, and steering tie rod. Attached Figure Description

[0019] Figure 1 This is a side-view three-dimensional structural schematic diagram of a universal tooling for various strength tests of steering knuckles proposed in this invention;

[0020] Figure 2 This is a bottom-view three-dimensional structural diagram of a universal tooling for various strength tests of steering knuckles proposed in this invention;

[0021] Figure 3 This is a partial three-dimensional structural schematic diagram of a universal tooling for various strength tests of steering knuckles proposed in this invention;

[0022] Figure 4 This is a front view schematic diagram of a universal tooling for various strength tests of steering knuckles proposed in this invention;

[0023] Figure 5This is a schematic diagram of the connecting arm, threaded column, rear upper control arm replacement tooling and straight pin structure of a universal tooling suitable for various strength tests of steering knuckles proposed in this invention;

[0024] Figure 6 This is a schematic diagram of a universal tooling for various strength tests of steering knuckles proposed in this invention, including a connecting arm, a two-way screw head, and a rear upper control arm replacement tooling structure.

[0025] In the diagram: 1. Floor; 2. Assembly hole; 3. Rear upper control arm replacement tooling mounting seat; 4. Front upper control arm replacement tooling mounting seat; 5. Rear lower control arm replacement tooling mounting seat; 6. Front lower control arm replacement tooling mounting seat; 7. Steering tie rod replacement tooling mounting seat; 8. Connecting arm; 9. Threaded post; 10. Rear upper control arm replacement tooling; 11. Front upper control arm replacement tooling; 12. Rear lower control arm replacement tooling; 13. Front lower control arm replacement tooling; 14. Steering tie rod replacement tooling; 15. Steering knuckle body; 16. Half shaft; 17. Wheel hub bearing; 18. Brake disc replacement tooling; 19. Tire replacement tooling; 20. Round hole; 21. Tire edge force loading point support; 22. Force loading joint; 23. Pin; 24. Caliper bracket replacement tooling; 25. Straight pin. Detailed Implementation

[0026] Depend on Figures 1-6 As shown, a general-purpose tooling suitable for various strength tests of steering knuckles includes a floor 1, a rear upper control arm replacement tooling mounting seat 3 fixedly installed on the top of the floor 1, a front upper control arm replacement tooling mounting seat 4 fixedly installed on the top of the floor 1, a rear lower control arm replacement tooling mounting seat 5 fixedly installed on the top of the floor 1, a front lower control arm replacement tooling mounting seat 6 fixedly installed on the top of the floor 1, and a steering tie rod replacement tooling mounting seat 7 fixedly installed on the top of the floor 1.

[0027] The outer walls of the rear upper control arm replacement fixture 3, front upper control arm replacement fixture 4, rear lower control arm replacement fixture 5, front lower control arm replacement fixture 6, and steering tie rod replacement fixture 7 are all provided with mounting holes. A straight pin 25 is rotatably connected to the inner wall of each mounting hole. A first ball joint bearing is rotatably fitted onto the outer wall of the straight pin 25. A connecting arm 8 is fixedly connected to the outer wall of the first ball joint bearing. A threaded post 9 is fixedly connected to the outer wall of the connecting arm 8. The threaded post 9 can be replaced with a double-ended stud. The rear upper control arm replacement fixture 10, front upper control arm replacement fixture 11, rear lower control arm replacement fixture 12, front lower control arm replacement fixture 13, and steering tie rod replacement fixture 14 are adjusted to the same length as the actual control arms, mainly by rotating the threaded post 9 or the double-ended stud.

[0028] The outer wall of the threaded post 9 is respectively threaded with a rear upper control arm replacement tool 10, a front upper control arm replacement tool 11, a rear lower control arm replacement tool 12, a front lower control arm replacement tool 13, and a steering tie rod replacement tool 14. The front upper control arm replacement tool fixing seat 4 cooperates with the front upper control arm replacement tool 11 through the threaded post 9. The rear lower control arm replacement tool fixing seat 5 cooperates with the rear lower control arm replacement tool 12 through the threaded post 9. The steering tie rod replacement tool fixing seat 7 cooperates with the steering tie rod replacement tool 14 through the threaded post 9. The front lower control arm replacement tool fixing seat 6 cooperates with the front lower control arm replacement tool 13 through the threaded post 9. The rear upper control arm replacement tool fixing seat 3 cooperates with the rear upper control arm replacement tool 10 through the threaded post 9.

[0029] Second ball bearings are fixedly installed on the top of the rear upper control arm replacement fixture 10, the front upper control arm replacement fixture 11, the rear lower control arm replacement fixture 12, the front lower control arm replacement fixture 13, and the steering tie rod replacement fixture 14. The second ball bearings are all rotatably connected to the same connector. The outer wall of the connector is rotatably connected to the steering knuckle body 15. The steering knuckle body 15 is connected to the rear upper control arm replacement fixture 10, the front upper control arm replacement fixture 11, the rear lower control arm replacement fixture 12, the front lower control arm replacement fixture 13, and the steering tie rod replacement fixture 14 through the connector.

[0030] The outer wall of the steering knuckle body 15 is fixedly connected to a caliper bracket replacement tooling 24 by bolts. The outer wall of the steering knuckle body 15 is fixedly connected to a half shaft 16, a wheel hub bearing 17 and a brake disc replacement tooling 18 by bolts. The brake disc replacement tooling 18 is fitted on the wheel hub bearing 17 and the half shaft 16.

[0031] The top of the brake disc replacement tooling 18 is fixedly connected to the tire replacement tooling 19 by bolts. The outer wall of the tire replacement tooling 19 is provided with a testing mechanism. The outer wall of the floor 1 is evenly provided with multiple assembly holes 2. The rear upper control arm replacement tooling fixing seat 3, the front upper control arm replacement tooling fixing seat 4, the rear lower control arm replacement tooling fixing seat 5, the front lower control arm replacement tooling fixing seat 6 and the steering tie rod replacement tooling fixing seat 7 are respectively connected to the floor 1 by bolts and assembly holes 2. The outer wall of the tire replacement tooling 19 is evenly provided with multiple round holes 20.

[0032] The testing mechanism includes two tire edge force loading point supports 21. The outer walls of the two tire edge force loading point supports 21 are fixedly connected to the outer wall of the tire replacement tooling 19. The outer walls of the two tire edge force loading point supports 21 are provided with through holes. The inner walls of the through holes are slidably connected with pins 23. The outer walls of the pins 23 are rotatably fitted with force loading joints 22. By connecting the testing equipment (hydraulic actuator) to the force loading joints 22 and applying the required force, the strength test of the steering knuckle body 15 can be carried out.

[0033] Working principle: In use, the first step is to assemble the steering knuckle body 15, wheel hub bearing 17, half shaft 16, brake disc replacement fixture 18, and tire replacement fixture 19 to be tested together using bolts; then, use an existing lift to suspend them in the air. The second step is to adjust the rear upper control arm replacement fixture 10, front upper control arm replacement fixture 11, rear lower control arm replacement fixture 12, front lower control arm replacement fixture 13, and steering tie rod replacement fixture 14 to the same length as the actual control arms. This adjustment is mainly achieved by rotating the threaded stud 9 or double-ended stud. Furthermore, it is subsequently installed onto the steering knuckle body 15 via a connector, facilitating the installation and testing of steering knuckle bodies 15 of different models. The other end is then connected via a pin 25 to the rear upper control arm replacement fixture 3, front upper control arm replacement fixture 4, rear lower control arm replacement fixture 5, front lower control arm replacement fixture 6, and steering tie rod replacement fixture 7, respectively. When connecting to the floor 1 via bolts and mounting holes 2, it is necessary to adjust it to a suitable position beforehand so that the installation angle matches the actual control arm's installation angle on the vehicle. Three steps: Connect the tire edge force loading point support 21 and force loading joint 22 to the wheel speed and tire replacement tooling 19 via bolts and pins 23 to complete the assembly of the entire tooling set; connect the testing equipment (hydraulic actuator) to the force loading joint 22 and apply the required force to perform the strength test of the steering knuckle body 15; and when performing the ultimate strength test of the rear upper control arm replacement tooling 10, rotate the bolts to connect the rear upper control arm replacement tooling fixing seat 3, the front upper control arm replacement tooling fixing seat 4, the rear lower control arm replacement tooling fixing seat 5, and the front lower control arm replacement tooling fixing seat 10. The arm replacement fixture 6 and the steering tie rod replacement fixture 7 are removed from the floor 1 and inverted. The round hole 20 on the tire replacement fixture 19 is connected and fixed to the floor 1 by bolts. Then, the test equipment (hydraulic actuator) is clamped on the straight pin 25, and the required force is applied along the axial direction of the rear upper control arm replacement fixture 10 to perform this test. Similarly, the ultimate strength test methods for the remaining front upper control arm replacement fixture 11, rear lower control arm replacement fixture 12, front lower control arm replacement fixture 13 and steering tie rod replacement fixture 14 are also similar.

[0034] The above description is only a preferred embodiment of this invention, but the scope of protection of this invention is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the scope of protection of this invention.

Claims

1. A universal tooling fixture suitable for various strength tests of steering knuckles, comprising a floor (1), characterized in that, The top of the floor (1) is fixedly installed with a rear upper control arm replacement fixture fixing seat (3), a front upper control arm replacement fixture fixing seat (4), a rear lower control arm replacement fixture fixing seat (5), a front lower control arm replacement fixture fixing seat (6), and a steering tie rod replacement fixture fixing seat (7). The outer walls of the rear upper control arm replacement fixture fixing seat (3), the front upper control arm replacement fixture fixing seat (4), the rear lower control arm replacement fixture fixing seat (5), the front lower control arm replacement fixture fixing seat (6), and the steering tie rod replacement fixture fixing seat (7) are all provided with mounting holes. The inner walls of the mounting holes are rotatably connected with straight pins (25). The outer walls of the straight pins (25) are rotatably fitted with a first ball joint bearing. The outer walls of the first ball joint bearing are fixedly connected with a connecting arm (8). The outer walls of the connecting arm (8) are fixedly connected with threads. The outer wall of the threaded column (9) is respectively threaded with a rear upper control arm replacement tool (10), a front upper control arm replacement tool (11), a rear lower control arm replacement tool (12), a front lower control arm replacement tool (13) and a steering tie rod replacement tool (14). The top of the rear upper control arm replacement tool (10), the front upper control arm replacement tool (11), the rear lower control arm replacement tool (12), the front lower control arm replacement tool (13) and the steering tie rod replacement tool (14) are fixedly installed with a second ball joint bearing. The second ball joint bearing is rotatably connected to the same connector. The outer wall of the connector is rotatably connected to a steering knuckle body (15). The outer wall of the steering knuckle body (15) is fixedly connected to a half shaft (16), a wheel hub bearing (17) and a brake disc replacement tool (18) by bolts. The top of the brake disc replacement tool (18) is fixedly connected to a tire replacement tool (19) by bolts. The outer wall of the tire replacement tool (19) is provided with a testing mechanism. The outer wall of the floor (1) is provided with a plurality of assembly holes (2), and the outer wall of the tire replacement tooling (19) is provided with a plurality of round holes (20). Furthermore, during the ultimate strength test of the rear upper control arm replacement fixture (10), the front upper control arm replacement fixture (11), the rear lower control arm replacement fixture (12), the front lower control arm replacement fixture (13), or the steering tie rod replacement fixture (14), the rotating bolts will connect the rear upper control arm replacement fixture fixing seat (3), the front upper control arm replacement fixture fixing seat (4), the rear lower control arm replacement fixture fixing seat (5), the front lower control arm replacement fixture fixing seat (6), and the steering tie rod replacement fixture fixing seat (7). Remove it from the floor (1), turn it upside down, connect and fix the round hole (20) on the tire replacement tool (19) to the floor (1) with bolts, then clamp the test equipment on the straight pin (25) accordingly, and then apply the required force value along the axial direction of the rear upper control arm replacement tool (10) or the front upper control arm replacement tool (11), or the rear lower control arm replacement tool (12), or the front lower control arm replacement tool (13) or the steering tie rod replacement tool (14) to perform this test.

2. A universal fixture suitable for use in a variety of strength tests of a knuckle as claimed in claim 1, characterized in that, The testing mechanism includes two tire edge force loading point supports (21). The outer walls of the two tire edge force loading point supports (21) are fixedly connected to the outer wall of the tire replacement tool (19). The outer walls of the two tire edge force loading point supports (21) are provided with through holes. The inner walls of the through holes are slidably connected with pins (23). The outer walls of the pins (23) are rotatably fitted with force loading joints (22).

3. The universal tooling for various strength tests of steering knuckles according to claim 1, characterized in that, The rear upper control arm replacement tooling fixing seat (3) is engaged with the rear upper control arm replacement tooling (10) through a threaded post (9).

4. The universal tooling for various strength tests of steering knuckles according to claim 1, characterized in that, The front upper control arm replacement tooling fixing seat (4) is engaged with the front upper control arm replacement tooling (11) through a threaded post (9).

5. A universal fixture for use in a variety of strength tests of a knuckle as claimed in claim 1, wherein The rear lower control arm replacement tooling fixing seat (5) is engaged with the rear lower control arm replacement tooling (12) through a threaded post (9).

6. A universal fixture suitable for use in a variety of strength tests of a knuckle as defined in claim 1, characterized in that, The front lower control arm replacement tooling fixing seat (6) is engaged with the front lower control arm replacement tooling (13) through a threaded post (9).

7. A universal fixture for use in a variety of strength tests of a knuckle as defined in claim 1, wherein The steering tie rod replacement fixture fixing seat (7) is engaged with the steering tie rod replacement fixture (14) via a threaded post (9).

8. A universal fixture for use in a variety of strength tests of a knuckle as defined in claim 1, characterized in that, The outer wall of the steering knuckle body (15) is fixedly connected to a caliper bracket replacement tooling (24) by bolts.

9. A universal fixture suitable for use in a variety of strength tests of a knuckle as defined in claim 1, characterized in that, The brake disc replacement tool (18) is fitted onto the hub bearing (17) and the half shaft (16).

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