Steering gear noise detection device

Abstract

A first clamping rod and a second clamping rod are arranged on the two sides of a collecting assembly respectively, one end of a supporting assembly is provided with a supporting frame used for supporting a steering gear, and the other end of the supporting assembly is movably connected with a rack so that the supporting assembly can drive the steering gear to abut against the collecting assembly. The acquisition assembly is provided with a vibration sensor, and the force application assembly is provided with a bidirectional rotating motor used for driving an input shaft of the steering gear. The supporting assembly drives the steering gear to move towards the collecting assembly, after the steering gear abuts against the vibration sensor, the first driving piece drives the first clamping rod to abut against one end of a steering gear rotating shaft, the second driving piece drives the second clamping rod to abut against the other end of the steering gear rotating shaft, and the force applying assembly simulates a steering wheel and applies force to an input shaft of the steering gear. And the vibration sensor acquires vibration information of the steering gear, so that whether the steering gear is qualified or not can be tested, and the problem that abnormal sound is brought to the whole vehicle to affect the progress of a project is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steering gear detection equipment, and in particular to a steering gear noise detection device. Background Art

[0002] In the automotive industry, the abnormal noise caused by vibration has always been an important quality indicator, which has a direct impact on the reputation and market competitiveness of the automobile brand. In particular, with the rapid development of the new energy vehicle industry, the noise problem of the original powertrain has gradually decreased, while other working noises generated by the vehicle during driving have become the main dissatisfaction of users. As a chassis system component that directly provides dynamic feedback to the driver and passengers, the level of noise and abnormal noise of the steering gear is extremely important. However, it is currently difficult to accurately detect the abnormal noise problem of the steering system during the vehicle's movement, and the lack of pertinence in the early stage often leads to problems getting out of control in the later stage of production. The traditional method of detecting abnormal noise in the steering system is usually based on the detection of the whole vehicle system. The steering system needs to be loaded onto the whole vehicle (that is, the normal use state of the vehicle) to check and test the noise and abnormal noise sources of the steering system. This method requires a large number of disassembly and assembly of parts, which takes a long time, is inefficient, and is complicated to operate. In addition, the work on the chassis parts during the driving of the car is extremely dangerous, and it is often inevitable to cause the risk of accidental injury to the driver and passengers. Summary of the invention

[0003] In view of the above technical problems, the present invention proposes a steering gear noise detection device, which truly simulates the operation of the whole vehicle and quickly switches to detect the steering gear noise, so as to avoid bringing abnormal noise problems to the whole vehicle and thus affecting the progress of the project.

[0004] The technical solution adopted by the present invention is as follows: A steering gear noise detection device includes a frame, a first clamping assembly, a second clamping assembly, a collection assembly, a support assembly and a force-applying assembly, the first clamping assembly includes a first driving member and a first clamping rod connected to the first driving member, the second clamping assembly includes a second driving member and a second clamping rod connected to the second driving member, the first clamping rod and the second clamping rod are respectively arranged on both sides of the collection assembly, one end of the support assembly is provided with a support frame for supporting the steering gear, the other end of the support assembly is movably connected to the frame so that the support assembly drives the steering gear to abut against the collection assembly, the collection assembly is provided with a vibration sensor, and the force-applying assembly is provided with a bidirectional rotating motor for driving the input shaft of the steering gear.

[0005] Optionally, the acquisition component includes a supporting cross plate and multiple limit blocks, which are sequentially installed on the supporting cross plate. The number of the vibration sensors is multiple, and the vibration sensors and limit blocks are connected one-to-one. The limit blocks are provided with through holes for the vibration sensors to pass through. The vibration sensor includes a sensor head, a sensor cable and a sensor shell, one end of the sensor cable is connected to the sensor head, and the other end of the sensor cable passes through the sensor shell and extends outside the sensor shell, and the sensor shell cooperates with the through hole.

[0006] Optionally, the sensor housing includes a first housing and a second housing connected to the first housing, the second housing is slidably matched with the through hole, the diameter of the first housing is larger than the diameter of the through hole, and an elastic member is provided between the first housing and the limit block.

[0007] Optionally, it also includes a first limit assembly and a second limit assembly, the first limit assembly including a first linear motor and a first mounting plate mounted on the first linear motor slide, the first driving member is mounted on the first mounting plate, a first limit cylinder is provided on the side of the first mounting plate facing the collection assembly, and the first clamping rod is movably located in the first limit cylinder; the second limit assembly includes a second linear motor and a second mounting plate mounted on the second linear motor slide, the second driving member is mounted on the second mounting plate, a second limit cylinder is provided on the side of the second mounting plate facing the collection assembly, and the second clamping rod is movably located in the second limit cylinder.

[0008] Optionally, the first limiting cylinder is provided with a first groove for movably cooperating with one end of the steering gear shaft, and the second limiting cylinder is provided with a second groove for movably cooperating with the other end of the steering gear shaft, and the opening of the first groove and the opening of the second groove are respectively facing the movement direction of the support assembly.

[0009] Optionally, the first limiting cylinder is provided with a first observation hole, the first mounting plate is provided with a first support plate, the first support plate is provided with a first in-place sensor, and the first in-place sensor is provided corresponding to the first observation hole; the second limiting cylinder is provided with a second observation hole, the second mounting plate is provided with a second support plate, the second support plate is provided with a second in-place sensor, and the second in-place sensor is provided corresponding to the second observation hole.

[0010] Optionally, the force-applying assembly includes a third linear motor and a fourth linear motor mounted on the third linear motor slide, the fourth linear motor slide is provided with the bidirectional rotating motor, and a third in-position sensor is provided on the rotating shaft of the bidirectional rotating motor.

[0011] Optionally, the support assembly includes a fifth linear motor, and the slide of the fifth linear motor is mounted with the support frame.

[0012] The beneficial effects of the present invention are: (1) the supporting assembly moves with the steering gear toward the collecting assembly, and after the steering gear and the vibration sensor abut against each other, the first driving member drives the first clamping rod to abut against one end of the steering gear shaft, and the second driving member drives the second clamping rod to abut against the other end of the steering gear shaft. The force-applying assembly simulates the steering wheel and applies force to the steering gear input shaft, truly simulating the operation of the entire vehicle, quickly reversing to detect the steering gear noise, and the vibration sensor collects the vibration information of the steering gear to test whether the steering gear is qualified.

[0013] (2) When the support assembly drives the steering gear to abut against the vibration sensor, the elastic member acts as a buffer to avoid the steering gear and the vibration sensor from not being in contact with each other or the steering gear having an excessive impact force on the vibration sensor.

[0014] (3) Before the force-applying component applies force to the input shaft of the steering gear, a preliminary judgment can be made manually by manually rotating the input shaft. If obvious noise is heard, it means that the steering gear is unqualified and there is no need for the force-applying component to automatically apply the load. If the manual force is uneven and the input shaft is not returned to the center, the lengths of the two ends of the rotating shaft in the first limit cylinder and the second limit cylinder are inconsistent. When the support component drives the steering gear away from the collection component, the rotating shaft will have the risk of overturning the first limit cylinder or the second limit cylinder. The first in-position sensor and the second in-position sensor monitor the rotating shaft respectively. When the length of the rotating shaft in the first limit cylinder is consistent with the length of the rotating shaft in the second limit cylinder, that is, the input shaft is returned to the center, then the support component can drive the steering gear to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a steering gear noise detection device proposed in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of a first limiting cylinder and a second limiting cylinder of a steering gear noise detection device provided in an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of a first groove and a second groove of a steering gear noise detection device provided in an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of a collection component of a steering gear noise detection device according to an embodiment of the present invention;

[0019] Figure 5 A top view of a collection component of a steering gear noise detection device according to an embodiment of the present invention.

[0020] The marks in the accompanying drawings are: 1. frame; 2. supporting cross plate; 3. limit block; 4. sensor head; 5. sensor cable; 6. sensor housing; 7. elastic member; 8. first linear motor; 9. first mounting plate; 10. first limit cylinder; 11. first driving member; 12. second linear motor; 13. second mounting plate; 14. second driving member; 15. second limit cylinder; 16. first groove; 17. second groove; 18. first observation hole; 19. first support plate; 20. first in-position sensor; 21. second observation hole; 22. second support plate; 23. second in-position sensor; 24. third linear motor; 25. fourth linear motor; 26. bidirectional rotating motor; 27. fifth linear motor; 28. support frame; 29. ​​controller; 30. steering gear; 31. rotating shaft; 32. input shaft. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 3 As shown, a steering gear 30 noise detection device includes a frame 1, a first clamping assembly, a second clamping assembly, a collecting assembly, a supporting assembly and a force-applying assembly, wherein the first clamping assembly includes a first driving member 11 and a first clamping rod connected to the first driving member 11, the second clamping assembly includes a second driving member 14 and a second clamping rod connected to the second driving member 14, the first clamping rod and the second clamping rod are respectively arranged on both sides of the collecting assembly, one end of the supporting assembly is provided with a supporting frame 28 for supporting the steering gear 30, the other end of the supporting assembly is movably connected to the frame 1, so that the supporting assembly drives the steering gear 30 to abut against the collecting assembly, the collecting assembly is provided with a vibration sensor, and the force-applying assembly is provided with a bidirectional rotating motor 26 for driving the input shaft 32 of the steering gear 30. The supporting assembly moves the steering gear 30 toward the collecting assembly. After the steering gear 30 and the vibration sensor abut against each other, the first driving member 11 drives the first clamping rod to abut against one end of the steering gear 30 rotating shaft 31, and the second driving member 14 drives the second clamping rod to abut against the other end of the steering gear 30 rotating shaft 31. The force-applying assembly simulates the steering wheel to apply force to the input shaft 32 of the steering gear 30. The bidirectional rotating motor can apply force in both clockwise and counterclockwise directions, truly simulating the whole vehicle operation and rapid reversing to detect the steering gear 30 noise. The vibration sensor collects the vibration information of the steering gear 30 to test whether the steering gear 30 is qualified to avoid bringing abnormal noise problems to the whole vehicle, thereby affecting the progress of the project.

[0023] In this embodiment, if Figure 4 and 5As shown, the acquisition component includes a supporting cross plate 2 and a plurality of limit blocks 3, and the plurality of limit blocks 3 are sequentially installed on the supporting cross plate 2. The number of the vibration sensors is multiple, and the vibration sensors and the limit blocks 3 are connected one by one. The limit blocks 3 are provided with a through hole for the vibration sensor to pass through. The vibration sensor includes a sensor head 4, a sensor cable 5 and a sensor housing 6. One end of the sensor cable 5 is connected to the sensor head 4, and the other end of the sensor cable 5 passes through the sensor housing 6 and extends outside the sensor housing 6. The sensor housing 6 cooperates with the through hole. The sensor housing 6 includes a first housing and a second housing connected to the first housing. The second housing is slidably matched with the through hole. The diameter of the first housing is larger than the diameter of the through hole. An elastic member 7 is provided between the first housing and the limit blocks 3. When the support component drives the steering gear 30 to abut against the vibration sensor, the elastic member 7 plays a buffering role to avoid the drawbacks that the steering gear 30 is not in contact with the vibration sensor, or the steering gear 30 has too much impact force on the vibration sensor.

[0024] In this embodiment, if Figure 2 and 3 As shown, it also includes a first limiting component and a second limiting component, the first limiting component includes a first linear motor 8 and a first mounting plate 9 installed on the slide of the first linear motor 8, the first driving member 11 is installed on the first mounting plate 9, and the first mounting plate 9 is provided with a first limiting cylinder 10 on the side facing the collection component, and the first clamping rod is movably located in the first limiting cylinder 10; the second limiting component includes a second linear motor 12 and a second mounting plate 13 installed on the slide of the second linear motor 12, the second driving member 14 is installed on the second mounting plate 13, and the second mounting plate 13 is provided with a second limiting cylinder 15 on the side facing the collection component, and the second clamping rod is movably located in the second limiting cylinder 15. The telescopic end of the first driving member 11 passes through the first mounting plate 9 and is connected to the first clamping rod located inside the first limiting cylinder 10, and the telescopic end of the second driving member 14 passes through the second mounting plate 13 and is connected to the second clamping rod located inside the second limiting cylinder 15. The first limiting cylinder 10 and the second limiting cylinder 15 limit the two ends of the rotating shaft 31 of the steering gear 30 respectively, and then the first driving member 11 drives the first clamping rod, and the second driving member 14 drives the second clamping rod to clamp the rotating shaft 31, simulating the wheel applying a load to the rotating shaft 31. The first driving member 11 and the second driving member 14 can be cylinders or hydraulic cylinders.

[0025] like Figure 3As shown, the first limiting cylinder 10 is provided with a first groove 16 for movably cooperating with one end of the rotating shaft 31 of the steering gear 30, and the second limiting cylinder 15 is provided with a second groove 17 for movably cooperating with the other end of the rotating shaft 31 of the steering gear 30, and the openings of the first groove 16 and the second groove 17 are respectively facing the movement direction of the supporting assembly. The first limiting assembly and the second limiting assembly move into place on both sides of the collecting assembly, and the supporting assembly drives the steering gear 30 to approach the collecting assembly, so that one end of the rotating shaft 31 of the steering gear 30 enters the first groove 16, and the other end of the rotating shaft 31 of the steering gear 30 enters the second groove 17, and then the first driving member 11 drives the first clamping rod to abut against one end of the rotating shaft 31 of the steering gear 30, and the second driving member 14 drives the second clamping rod to abut against the other end of the rotating shaft 31 of the steering gear 30, simulating the tire applying a load to the rotating shaft 31. In this way, the first limiting cylinder 10 and the second limiting cylinder 15 pre-position the rotating shaft 31 of the steering gear 30, reducing the movement stroke of the first clamping rod and the second clamping rod.

[0026] like Figure 2 As shown, the first limiting cylinder 10 is provided with a first observation hole 18, the first mounting plate 9 is provided with a first support plate 19, the first support plate 19 is provided with a first in-place sensor 20, and the first in-place sensor 20 is provided corresponding to the first observation hole 18; the second limiting cylinder 15 is provided with a second observation hole 21, the second mounting plate 13 is provided with a second support plate 22, the second support plate 22 is provided with a second in-place sensor 23, and the second in-place sensor 23 is provided corresponding to the second observation hole 21. Before the force-applying component applies force to the input shaft 32 of the steering gear 30, a preliminary judgment can be made manually by manually rotating the input shaft 32. If obvious noise is heard, it means that the steering gear 30 is unqualified, and it is not necessary for the force-applying component to automatically apply the load. It is just that the manual force is uneven. If the input shaft 32 is not returned to the center, the lengths of the two ends of the rotating shaft 31 in the first limit cylinder 10 and the second limit cylinder 15 are inconsistent. When the support assembly drives the steering gear 30 away from the collection assembly, the rotating shaft 31 will be at risk of overturning the first limit assembly or the second limit assembly. The first in-position sensor 20 and the second in-position sensor 23 respectively monitor the rotating shaft 31. When the length of the rotating shaft 31 in the first limit cylinder 10 is consistent with the length of the rotating shaft 31 in the second limit cylinder 15, that is, the input shaft 32 is returned to the center, then the support assembly can drive the steering gear 30 to move.

[0027] like Figure 1As shown, the force-applying assembly includes a third linear motor 24 and a fourth linear motor 25 mounted on the slide of the third linear motor 24, the slide of the fourth linear motor 25 is provided with the bidirectional rotary motor 26, and the rotating shaft 31 of the bidirectional rotary motor 26 is provided with a third in-position sensor. The position of the bidirectional rotary motor 26 is adjusted by the third linear motor 24 and the fourth linear motor 25, so that the bidirectional rotary motor 26 is arranged corresponding to the input shaft 32 of the steering gear 30, and when the third in-position sensor detects that the input shaft 32 of the bidirectional rotary motor 26 is connected to the input shaft 32, the bidirectional rotary motor 26 applies force to simulate the steering wheel to load the input shaft 32. The support assembly includes a fifth linear motor 27, and the slide of the fifth linear motor 27 is provided with the support frame 28. The controller 29 is also included, and the controller 29 is electrically connected to the first linear motor 8, the second linear motor 12, the third linear motor 24, the fourth linear motor 25, the fifth linear motor 27, the first driving member 11, the second driving member 14, the first in-position sensor 20, the second in-position sensor 23, and the third in-position sensor.

[0028] It is understandable that the specific embodiments described above are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts. All equivalent structural transformations made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, are similarly included in the protection scope of the present invention.

Claims

1. A steering gear noise detection device, characterized in that: It includes a frame, a first clamping assembly, a second clamping assembly, a collection assembly, a support assembly and a force-applying assembly, the first clamping assembly includes a first driving member and a first clamping rod connected to the first driving member, the second clamping assembly includes a second driving member and a second clamping rod connected to the second driving member, the first clamping rod and the second clamping rod are respectively arranged on both sides of the collection assembly, one end of the support assembly is provided with a support frame for supporting the steering gear, the other end of the support assembly is movably connected to the frame so that the support assembly drives the steering gear to abut against the collection assembly, the collection assembly is provided with a vibration sensor, and the force-applying assembly is provided with a bidirectional rotating motor for driving the input shaft of the steering gear.

2. The steering gear noise detection device according to claim 1, characterized in that: The acquisition component includes a supporting cross plate and multiple limit blocks, which are sequentially installed on the supporting cross plate. There are multiple vibration sensors, which are connected to the limit blocks in a one-to-one correspondence. The limit blocks are provided with through holes for the vibration sensors to pass through. The vibration sensor includes a sensor head, a sensor cable and a sensor shell. One end of the sensor cable is connected to the sensor head, and the other end of the sensor cable passes through the sensor shell and extends outside the sensor shell. The sensor shell cooperates with the through hole.

3. The steering gear noise detection device according to claim 2, characterized in that: The sensor housing comprises a first housing and a second housing connected to the first housing, the second housing is slidably matched with the through hole, the diameter of the first housing is larger than the diameter of the through hole, and an elastic member is provided between the first housing and the limit block.

4. The steering gear noise detection device according to claim 1, characterized in that: It also includes a first limiting assembly and a second limiting assembly, the first limiting assembly including a first linear motor and a first mounting plate mounted on the first linear motor slide, the first driving member being mounted on the first mounting plate, a first limiting cylinder being provided on the side of the first mounting plate facing the collection assembly, and the first clamping rod being movably located in the first limiting cylinder; the second limiting assembly including a second linear motor and a second mounting plate mounted on the second linear motor slide, the second driving member being mounted on the second mounting plate, a second limiting cylinder being provided on the side of the second mounting plate facing the collection assembly, and the second clamping rod being movably located in the second limiting cylinder.

5. The steering gear noise detection device according to claim 4, characterized in that: The first limiting cylinder is provided with a first groove for movably cooperating with one end of the steering gear shaft, and the second limiting cylinder is provided with a second groove for movably cooperating with the other end of the steering gear shaft, and the opening of the first groove and the opening of the second groove are respectively facing the movement direction of the support assembly.

6. The steering gear noise detection device according to claim 4, characterized in that: The first limiting cylinder is provided with a first observation hole, the first mounting plate is provided with a first support plate, the first support plate is provided with a first in-place sensor, and the first in-place sensor is provided corresponding to the first observation hole; the second limiting cylinder is provided with a second observation hole, the second mounting plate is provided with a second support plate, the second support plate is provided with a second in-place sensor, and the second in-place sensor is provided corresponding to the second observation hole.

7. The steering gear noise detection device according to claim 1, characterized in that: The force-applying assembly includes a third linear motor and a fourth linear motor mounted on the third linear motor slide, the fourth linear motor slide is provided with the bidirectional rotating motor, and a third in-position sensor is provided on the rotating shaft of the bidirectional rotating motor.

8. The steering gear noise detection device according to claim 1, characterized in that: The support assembly includes a fifth linear motor, and the slide of the fifth linear motor is mounted with the support frame.

Images