Lightweight aluminum alloy spherical hinge assembly of new energy automobile and torque detection system of lightweight aluminum alloy spherical hinge assembly

Abstract

The invention belongs to the technical field of new energy automobile manufacturing and detection, and particularly relates to a new energy automobile lightweight aluminum alloy spherical hinge assembly and a torque detection system.The aluminum alloy spherical hinge assembly comprises a spherical shell and a spherical pin inserted into the spherical shell, two openings of the spherical shell are each sleeved with a dust cover, and the two ends of the spherical pin penetrate out of the two dust covers correspondingly; a ball seat is inserted between the interior of the ball shell and the outer wall of the ball pin, a plurality of micro-beads are embedded in the ball seat, two composite ceramic shells are symmetrically arranged outside the micro-beads in a sleeving manner, and a traction wire fixedly connected with the composite ceramic shells further surrounds the exterior of the ball pin; the torque detection system comprises a detection table, wherein the detection table is provided with two steel frames and two detection branches which are respectively arranged in the two steel frames. According to the invention, an inner rolling type supported lightweight aluminum alloy spherical hinge assembly can be manufactured, torque detection is carried out alternately along the X axis and the Y axis, secondary clamping of the aluminum alloy spherical hinge assembly is not needed, and the continuity of the whole torque detection process is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing and testing of new energy vehicles, and specifically relates to a lightweight aluminum alloy ball joint assembly for new energy vehicles and a torque detection system thereof. Background Art

[0002] As new energy vehicle technology matures, the per capita ownership of new energy vehicles increases year by year. Whether it is new car assembly or old car replacement, there is a very large spare parts market. The use of ball joints in the suspension system of new energy vehicles is very common, especially for transmitting force and torque to the suspension arm, providing angle deviation and rotational freedom. Therefore, a good ball joint is very helpful for improving the automobile suspension system.

[0003] During the rotation of the ball joint, the contact surface will be affected by resistance, which mainly comes from the friction between the contact surfaces, making the rotation less smooth than expected. Before production, it is necessary to test the torque of the swing and rotation of the aluminum alloy ball joint of new energy vehicles in order to select qualified products with reasonable structure and qualified torque.

[0004] When using a torque sensor to detect the aluminum alloy ball joint assembly of new energy vehicles, two drive motors are used to simultaneously drive the ball pin and the ball shell to rotate, and the torque on the two rotating shafts is measured. However, the centrifugal force formed by the rotation on one shaft will increase the load on the other shaft, which is not good for the torque sensor. If the two rotating shafts are isolated from each other, separate detection will require secondary clamping of the aluminum alloy ball joint assembly, and the continuity of the entire torque detection process is poor. Summary of the invention

[0005] The purpose of the present invention is to provide a lightweight aluminum alloy ball joint assembly for new energy vehicles and a torque detection system thereof, which can be made into a lightweight aluminum alloy ball joint assembly with an internal rolling support, and perform torque detection alternately along the X-axis and the Y-axis, and there is no need for secondary clamping of the aluminum alloy ball joint assembly, thereby improving the continuity of the entire torque detection process.

[0006] The technical solution adopted by the present invention is as follows: A lightweight aluminum alloy ball joint assembly for new energy vehicles includes a ball shell and a ball pin inserted into the ball shell, dust covers are provided at both openings of the ball shell, two dust covers are respectively passed through the two ends of the ball pin, a ball seat is inserted between the inside of the ball shell and the outer wall of the ball pin, a plurality of micro beads are embedded and installed on the ball seat, two composite ceramic shells are symmetrically provided on the outside of the micro beads, and a wire fixedly connected to the composite ceramic shell is also surrounded on the outside of the ball pin, and when the micro beads are loaded, they push the composite ceramic shell to pull the wire to deform.

[0007] When the aluminum alloy ball joint assembly is loaded, the ball pin swings or rotates around the midpoint of the ball shell. During this process, the ball seat and micro-ball jointly support the ball pin. The rotation of the micro-ball can reduce the internal friction of the aluminum alloy ball joint assembly. The rolling structure surrounds the spherical surface. At the same time, the composite ceramic shell and the wire limit the micro-ball to keep it surrounding the ball pin. The wire deformation can be stretched to further buffer, taking into account friction relief and its own elastic deformation.

[0008] After the ball pin is unloaded of its load, the pull wire itself contracts to link the ball seat and the micro-bead to stick to the ball pin.

[0009] As a preferred solution, a gasket and a plug seat are embedded in an opening of the ball shell, one end face of the gasket extends into the ball shell and contacts the ball seat, and one end face of the plug seat extends out of the ball shell. After the ball pin and the ball seat are placed in the ball shell, the gasket and the plug seat are installed in sequence. The plug seat can be fixed by welding or by threading. While supporting the ball pin, it can tighten the ball seat to prevent the ball seat from detaching from the ball pin.

[0010] As a preferred solution, the two ends of the two dust covers are respectively provided with double clamps and circular clamps, the two double clamps are respectively arranged at the two ends of the ball pin, and the two circular clamps are respectively arranged at the opening of the ball shell and the opening of the plug seat.

[0011] A torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle comprises a detection platform, on which two steel frames and two detection branches respectively arranged inside the two steel frames are arranged, and the two detection branches are respectively arranged along an X-axis and a Y-axis.

[0012] Among them, the two detection branches each include a power motor and a torque sensor coaxially connected to the output end of the power motor, and the bottoms of the two power motors are respectively connected to the inside of two steel frames; a lifting module is also vertically installed inside one of the steel frames, a pneumatic clamp is fixed to the output end of the lifting module, and a pin shaft is axially inserted inside the ball pin.

[0013] In the detection state, first lift the aluminum alloy ball joint assembly to connect the torque sensor on the X-axis to perform swing torque detection. Then, lower the aluminum alloy ball joint assembly, connect the torque sensor on the Y-axis, and perform rotational torque detection. In this way, the test piece is clamped and moved to the two detection branches in turn, and torque detection is performed alternately along the X-axis and Y-axis to avoid interference between the two detection branches, so that the two torque sensors encourage each other and are connected, reducing damage caused by deflection. There is no need to clamp the aluminum alloy ball joint assembly for the second time, thereby improving the continuity of the entire torque detection process.

[0014] As a preferred solution, a load-bearing frame is fixed to one side of a steel frame away from the lifting module. The middle of the load-bearing frame is ring-shaped and a rotating shaft is installed axially on the ring. One end of the rotating shaft is coaxially connected to the adjacent torque sensor detection shaft, and the other end is fixed with a folding plate. One end of the folding plate extends obliquely upward to the Y-axis and a through hole is opened at the one end.

[0015] Among them, the upper surface of the folding plate is fixed with an in-place sensor, a guide tube and a micro cylinder in sequence along the radial direction of the through hole. The detection end of the in-place sensor is a concave structure and surrounds the through hole. The cylinder rod of the micro cylinder passes through the guide tube and points to the in-place sensor.

[0016] When the aluminum alloy ball joint assembly is lifted, the upper end of the pin shaft passes through the through hole and is detected by the in-position sensor, so that the center axis of the ball shell coincides with the X-axis. At this time, the lifting is stopped, and the micro cylinder is started to extend along the guide tube to cooperate with the through hole clamping pin shaft for locking. After the in-position detection is completed, the aluminum alloy ball joint assembly and the torque sensor are coaxially connected through the rotating shaft, folding plate and pin shaft as a bridge. In this way, the aluminum alloy ball joint assembly can be swung around the center of the X-axis for detection, and there is no need to repeatedly calibrate the center of the aluminum alloy ball joint assembly.

[0017] As a preferred solution, both sides of the pneumatic clamp are bonded with heat insulation plates and arc-shaped clamps fixed to the heat insulation plates, air passages are opened inside the two arc-shaped clamps, and electric heating plates are fixed on one side of the two air passages close to the Y-axis. The electric heating plates are connected to the industrial computer through relay signals. During the detection process, the electric heating plates in the air passages are started to heat the aluminum alloy ball joint assembly in the pneumatic clamp to the set range, and torque detection is performed in the heated state. Heat insulation is performed with heat insulation plates to protect the pneumatic clamp.

[0018] As a preferred solution, copper alloy air ducts separated from the electric heating plate are inserted inside the two air channels, and the two copper alloy air ducts are connected to each other. One of the copper alloy air duct ports is connected to an air intake hose and a micro air pump in sequence. The micro air pump is installed on the testing platform. After heating, the electric heating plate is turned off, and the micro air pump is started to pump cold air along the two copper alloy air ducts to take away the heat from the air channels and cool down the aluminum alloy ball joint assembly between the two air channels. Torque detection is performed in the cooling state, and the exhaust gas can be passed into the air-conditioning system.

[0019] As a preferred solution, a first coupling is sleeved between one end of the rotating shaft and the adjacent torque sensor detection shaft, a diagonal rod is hinged on the outer side of the first coupling, and one end of the diagonal rod away from the first coupling is detachably connected to the upper edge of the folding plate.

[0020] As a preferred solution, a second coupling is fixed along the Y-axis at the detection end of the in-position sensor, and the second coupling is key-connected to the pin shaft. An alloy seat bracket and a motor seat are also fixed inside the two steel frames. The two alloy seat brackets are forked and clamped on the outside of the two torque sensors, and the two motor seats respectively carry two power motors.

[0021] As a preferred solution, the pin shaft is provided with threaded sections at both sides of the aluminum alloy ball joint assembly, and two limit rings for clamping the aluminum alloy ball joint assembly from both ends are respectively threadedly mounted on the two threaded sections.

[0022] The technical effects achieved by the present invention are: The lightweight aluminum alloy ball joint assembly of the present invention is applied to new energy vehicles. When the aluminum alloy ball joint assembly is loaded, the ball pin swings or rotates around the midpoint of the ball shell. During this process, the ball seat and the micro-bead jointly support the ball pin. The rotation of the micro-bead can reduce the internal friction of the aluminum alloy ball joint assembly. The rolling structure surrounds the spherical surface. At the same time, the composite ceramic shell and the wire limit the micro-bead, and the wire deformation can be stretched to further buffer, taking into account friction relief and its own elastic deformation, which is suitable for multi-angle swing of the support node of the suspension arm.

[0023] The present invention first lifts the aluminum alloy ball joint assembly to connect the torque sensor on the X-axis to perform swing torque detection. Then, the aluminum alloy ball joint assembly is lowered and connected to the torque sensor on the Y-axis to perform rotation torque detection. In this way, the inspection piece is clamped and transferred to the two detection branches in turn, and torque detection is performed alternately along the X-axis and Y-axis to avoid mutual interference between the two detection branches, so that the two torque sensors encourage each other and are connected, reducing damage caused by deflection, and there is no need to clamp the aluminum alloy ball joint assembly for the second time, thereby improving the continuity of the entire torque detection process.

[0024] When the aluminum alloy ball joint assembly of the present invention is lifted, the upper end of the pin shaft passes through the through hole and is detected by the in-position sensor, so that the central axis of the ball shell coincides with the X-axis. At this time, the lifting is stopped, and the micro cylinder is started to extend along the guide tube to cooperate with the through hole clamping pin shaft to lock it. After the in-position detection is completed, the aluminum alloy ball joint assembly and the torque sensor are coaxially connected through the rotating shaft, folding plate and pin shaft as a bridge. In this way, the aluminum alloy ball joint assembly can be swung around the X-axis for detection, and there is no need to repeatedly calibrate the center of the aluminum alloy ball joint assembly.

[0025] When the invention performs torque detection on the X-axis and Y-axis, the test piece can be heated or cooled to simulate a high temperature or cold environment, thereby increasing the considerations for torque detection. The application scenarios of lightweight aluminum alloy ball joint assemblies for new energy vehicles are further enriched, and the lightweight aluminum alloy ball joint assemblies for vehicles take into account the influence of the outside temperature on the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a cross-sectional view of a lightweight aluminum alloy ball joint assembly for a new energy vehicle in the first embodiment of the present invention; Figure 2 is a front view of the ball seat in the first embodiment of the present invention; Figure 3 is a front view of the microbead in Example 1 of the present invention; Figure 4 is a front view of a torque detection system in a second embodiment of the present invention; Figure 5 is a front view of a torque detection system in a second embodiment of the present invention; Figure 6 It is a diagram in Embodiment 2 of the present invention; Figure 7 is a front view of a torque sensor in a second embodiment of the present invention; Figure 8 It is a front view of the pneumatic clamping claw clamping the aluminum alloy ball joint assembly in the second embodiment of the present invention; Fig. 9 is a top view of the pneumatic gripper in the second embodiment of the present invention; Fig.10 is an exploded view of the pin and the limiting ring in the second embodiment of the present invention; Fig.11 is a front view of the folding plate in the second embodiment of the present invention; Fig.12 It is a system block diagram of the overall control of the torque detection system in the second embodiment of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Ball shell; 2. Ball pin; 3. Dust cover; 4. Ball seat; 5. Micro beads; 6. Composite ceramic shell; 7. Wire drawing; 8. Washer; 9. Blocking seat; 10. Double clamp ring; 11. Round clamp ring; 12. Test bench; 13. Steel frame; 14. Torque sensor; 15. Power motor; 16. Lifting module; 17. Pneumatic gripper; 18. Pin shaft; 19. Load-bearing frame; 20. Rotating shaft; 21. Folding plate; 22 , through hole; 23, in-position sensor; 24, guide tube; 25, micro cylinder; 26, heat insulation board; 27, arc clamp; 28, air channel; 29, electric heating plate; 30, copper alloy air duct; 31, air intake hose; 32, micro air pump; 33, first coupling; 34, inclined tie rod; 35, second coupling; 36, alloy seat bracket; 37, motor seat; 38, threaded section; 39, limit ring. DETAILED DESCRIPTION

[0028] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0029] Embodiment 1: like Figure 1-Figure 3 As shown, a lightweight aluminum alloy ball joint assembly for new energy vehicles is applied to the suspension arm of new energy vehicles, including a ball shell 1 and a ball pin 2 inserted in the ball shell 1. The ball shell 1 and the ball pin 2 are both made of aluminum alloy, which can reduce the counterweight of the ball joint assembly and make it lightweight. Dust covers 3 are sleeved at both openings of the ball shell 1, and two dust covers 3 are respectively passed through the two ends of the ball pin 2. A ball seat 4 is inserted between the inside of the ball shell 1 and the outer wall of the ball pin 2. The ball seat 4 can be made of wear-resistant rubber material. A plurality of micro beads 5 are embedded and installed on the ball seat 4. The micro beads 5 can be made of hollow glass balls and will not oxidize when exposed to the air. Two composite ceramic shells 6 are symmetrically sleeved on the outside of the micro beads 5. The composite ceramic shells 6 can be made of zirconium oxide wear-resistant ceramic material. The outside of the ball pin 2 is also surrounded by a wire 7 fixedly connected to the composite ceramic shell 6. The wire 7 can be made of a polyurethane belt line. When the micro beads 5 are loaded, they push the composite ceramic shell 6 to pull the wire 7 to deform.

[0030] Furthermore, if Figure 2 As shown, the number of micro-beads 5 is set to six, which surround the ball pin 2 for support while maintaining a large distance between each other and will not obviously occupy the space of the ball seat 4, so that the ball seat 4 can maintain good structural integrity.

[0031] Furthermore, if Figure 3 As shown, the number of micro beads 5 is set to thirty-six, dividing the waist of the ball seat 4 into thirty-six partitions, so as to support the ball pin 2 more closely.

[0032] Among them, both end surfaces of the ball pin 2 are hobbed with forty teeth, and nitriding treatment is performed to optimize its hardness. Before assembly, the surface of the ball pin 2 is evenly coated with lithium-based lubricating oil.

[0033] When in use, a transmission rod is used to pass through the middle hole of the ball pin 2 and is fixed to the suspension system of the new energy vehicle with a nut. When loaded, the ball pin 2 swings or rotates around the midpoint of the ball shell 1. During this process, the ball seat 4 and the micro-bead 5 jointly support the ball pin 2. The rotation of the micro-bead 5 can reduce the internal friction of the aluminum alloy ball joint assembly, and surround the spherical surface through a rolling structure. At the same time, the composite ceramic shell 6 and the wire 7 limit the micro-bead 5, and the wire 7 can be stretched to deform for further buffering, taking into account friction relief and its own elastic deformation, and is suitable for multi-angle swinging of the support node of the suspension arm.

[0034] See attached Figure 1A gasket 8 and a plugging seat 9 are also embedded in an opening of the ball shell 1. One end face of the gasket 8 extends into the ball shell 1 and contacts the ball seat 4. One end face of the plugging seat 9 extends out of the ball shell 1. After the ball pin 2 and the ball seat 4 are placed in the ball shell 1, the gasket 8 and the plugging seat 9 are installed in sequence. The plugging seat 9 can be fixed by welding or by threading. While supporting the ball pin 2, it can press the ball seat 4 tightly to prevent the ball seat 4 from detaching from the ball pin 2.

[0035] Refer to the attached Figure 1 The two ends of the two dust covers 3 are respectively provided with double clamps 10 and round clamps 11, the two double clamps 10 are respectively arranged at the two ends of the ball pin 2, the two round clamps 11 are respectively arranged at the opening of the ball shell 1 and the opening of the plug seat 9, and the neck of the ball pin 2 is filled with lithium-based lubricating oil, and the two ends of the dust covers 3 are respectively bound by the double clamps 10 and the round clamps 11, so that the two dust covers 3 respectively cover the two openings of the ball shell 1.

[0036] The working principle of the present invention is as follows: the ball pin 2 swings or rotates around the midpoint of the ball shell 1. During this process, the ball seat 4 and the micro-ball 5 jointly support the ball pin 2. The rotation of the micro-ball 5 can reduce the internal friction of the aluminum alloy ball joint assembly. The rolling structure surrounds the spherical surface. At the same time, the composite ceramic shell 6 and the wire 7 limit the micro-ball 5, and the wire 7 can be stretched to deform for further buffering, taking into account friction relief and its own elastic deformation.

[0037] Embodiment 2: In order to find out the defects in product design, it is very necessary to test the torque of the swing and rotation of the aluminum alloy ball joint of new energy vehicles before production, so as to screen out qualified products with reasonable structure and qualified torque. Or to eliminate defective products in the production process after production to prevent defective parts from entering the market.

[0038] like Figure 4-Figure 12 As shown, a torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle includes a detection platform 12. The detection platform 12 is provided with two steel frames 13 and two detection branches respectively arranged inside the two steel frames 13. The two detection branches are respectively arranged along the X-axis and the Y-axis. The detection platform 12 is externally provided with an industrial computer for controlling the entire torque detection system and receiving detection signals.

[0039] Among them, the two detection branches include a power motor 15 and a torque sensor 14 coaxially connected to the output end of the power motor 15. The torque sensor 14 can use the NJL-305 model non-contact dynamic torque sensor, and the power motor 15 can use a three-phase asynchronous motor. The output ends of the two power motors 15 are fixedly connected to the power input end of the torque sensor 14 through a coaxial clamping ring, and the bottoms of the two power motors 15 are respectively connected to the inside of two steel frames 13; a lifting module 16 is also vertically installed inside one of the steel frames 13, and the lifting module 16 can use the Tianyouda module of the YDG12-OS-P400-L10-50-L3 model. A pneumatic clamp 17 is fixed to the output end of the lifting module 16, and a pin shaft 18 is axially inserted inside the ball pin 2.

[0040] Furthermore, the pneumatic clamp 17 is centered relative to the Y axis and can be raised and lowered along the Y axis driven by the lifting module 16 . The pneumatic clamp 17 is provided with two symmetrical arc-shaped clamps, which can be tightly attached to the outer arc surface of the spherical shell 1 after closing.

[0041] Furthermore, the detection ends of the two torque sensors 14 both point to the intersection of the X-axis and the Y-axis, leaving sufficient spacing for the movement of the pneumatic clamp 17 and the aluminum alloy ball joint assembly, or sufficient space for clamping the aluminum alloy ball joint assembly by an industrial robot.

[0042] Through the above structure, its working principle is: first, the pneumatic clamp 17 is opened, and the aluminum alloy ball joint assembly is placed with an industrial robot, and then the ball shell 1 is clamped, and then the lifting module 16 is started to lift the aluminum alloy ball joint assembly along the Y-axis until the pin shaft 18 is connected to the torque sensor 14 on the X-axis, and the adjacent power motor 15 is started to swing the ball pin 2 around the X-axis. Within the range of fifteen degrees to the left and right, the detection signal of the torque sensor 14 is transmitted to the industrial computer for recording through the signal converter.

[0043] Then, lower the aluminum alloy ball joint assembly, connect the pin shaft 18 to the torque sensor 14 on the Y-axis, start the adjacent power motor 15 to rotate the ball pin 2 around the Y-axis, and transmit the detection signal of the torque sensor 14 to the industrial computer for recording through the signal converter.

[0044] In this way, the test piece is clamped and transferred to the two detection branches in turn, and torque detection is performed alternately along the X-axis and Y-axis to avoid interference between the two detection branches. The two torque sensors 14 encourage each other and are connected, reducing damage caused by deflection. There is no need to clamp the aluminum alloy ball joint assembly for the second time, thereby improving the continuity of the entire torque detection process.

[0045] Refer to the attached Figure 4 , Figure 5 and Fig.11A load-bearing frame 19 is welded to one side of a steel frame 13 away from the lifting module 16. The middle of the load-bearing frame 19 is ring-shaped and a rotating shaft 20 is installed axially on the ring. One end of the rotating shaft 20 is coaxially connected to the detection shaft of the adjacent torque sensor 14, and a folding plate 21 is fixed to the other end. One end of the folding plate 21 extends obliquely upward to the Y axis and a through hole 22 is opened at this end.

[0046] Among them, refer to the attached Fig.11 and Fig.12 The upper surface of the folding plate 21 is fixed with an in-place sensor 23, a guide tube 24 and a micro cylinder 25 in sequence along the radial direction of the through hole 22. The in-place sensor 23 can select an infrared photoelectric sensor of the XC-2020 model, and the micro cylinder 25 can select an SDA model mini cylinder. The detection end of the in-place sensor 23 is a concave structure and surrounds the through hole 22. The cylinder rod of the micro cylinder 25 passes through the guide tube 24 and points to the in-place sensor 23.

[0047] The micro cylinder 25 is connected to the lower computer through a relay signal, and the lower computer and the in-position sensor 23 are both connected to the industrial computer by signal, and the detection signal of the in-position sensor 23 is transmitted through a signal converter.

[0048] Furthermore, the load-bearing frame 19 has a triangular structure, which can support the rotating shaft 20 relatively stably, so that the rotating shaft 20 rotates along the X-axis.

[0049] Through the above structure, its working principle is: when the aluminum alloy ball joint assembly is lifted, the upper end of the pin shaft 18 passes through the through hole 22 and is detected by the in-position sensor 23, so that the central axis of the ball shell 1 coincides with the X-axis. At this time, the lifting is stopped, and the micro cylinder 25 is started to extend along the guide tube 24, and the through hole 22 is clamped to lock the pin shaft 18. After the in-position detection is completed, the aluminum alloy ball joint assembly and the torque sensor 14 are coaxially connected through the rotating shaft 20, the folding plate 21 and the pin shaft 18 as a bridge. In this way, the aluminum alloy ball joint assembly can be swung around the X-axis for detection without repeatedly calibrating the center of the aluminum alloy ball joint assembly.

[0050] Refer to the attached Figure 8 , Fig. 9 and Fig.12 Both sides of the pneumatic clamp 17 are bonded with a heat insulation plate 26 and an arc-shaped clamp 27 fixed to the heat insulation plate 26. The heat insulation plate 26 can be made of perlite. Air channels 28 are opened inside the two arc-shaped clamps 27. Electric heating plates 29 are fixed on one side of the two air channels 28 close to the Y axis. The electric heating plates 29 are connected to the industrial computer through relay signals. During the detection process, the electric heating plates 29 in the air channels 28 are started to heat the aluminum alloy ball joint assembly in the pneumatic clamp 17 to the set range. Torque detection is performed in the heated state, and the heat insulation plate 26 is used for heat insulation to protect the pneumatic clamp 17.

[0051] As an option, the temperature of the aluminum alloy ball joint assembly can be monitored in real time by a temperature sensor and displayed on an industrial computer for monitoring. The temperature sensor is a prior art and is not shown in the figure. It can resist the ball shell 1 to avoid obstruction of the ball pin 2.

[0052] See attached Figure 5 , Fig. 9 and Fig.12 , copper alloy air ducts 30 separated from the electric heating plate 29 are inserted inside the two air channels 28, and the two copper alloy air ducts 30 are connected through a bellows. One of the ports of the copper alloy air duct 30 is connected with an air intake hose 31 and a micro air pump 32 in sequence. The micro air pump 32 is connected to an industrial computer through a relay signal. The micro air pump 32 is installed on the test bench 12. After heating, the electric heating plate 29 is turned off, and the micro air pump 32 is started to pump cold air along the two copper alloy air ducts 30 to take away the heat of the air channel 28 and cool down the aluminum alloy ball joint assembly between the two air channels 28. Torque detection is performed in the cooling state, and the exhaust gas can be passed into the air conditioning system.

[0053] See attached Figure 4 , Figure 6 and Fig.11 A first coupling 33 is sleeved between one end of the rotating shaft 20 and the detection shaft of the adjacent torque sensor 14. A diagonal rod 34 is hinged on the outer side of the first coupling 33. One end of the diagonal rod 34 away from the first coupling 33 is detachably connected to the upper edge of the folding plate 21, such as a bolt connection, or a buckle connection, etc. In this embodiment, a pin connection is preferably used, which can be selected while supporting.

[0054] Through the above structure, the rotating shaft 20, the folding plate 21, the first coupling 33 and the inclined rod 34 form a triangular stable structure, and the stability of the bridge is higher.

[0055] See attached Figure 5 , Figure 6 and Figure 7 A second coupling 35 is fixed along the Y-axis at the detection end of an in-place sensor 23, and the second coupling 35 is key-connected to the pin 18. An alloy support 36 and a motor support 37 are fixed inside the two steel frames 13 by bolts. The two alloy supports 36 are forked and clamped on the outside of the two torque sensors 14. The torque sensors 14 are reinforced with screws. The two motor supports 37 carry two power motors 15 by bolts respectively, and are supported by the alloy support 36 and the motor support 37 to improve the stability of the online detection of the two detection branches. When placing the inspection piece, the key of the pin 18 is vertically opposite to the keyway of the second coupling 35, and the inspection piece in the limit mold can be clamped at a specified angle by an industrial manipulator and sent into the pneumatic clamp 17 according to the set orientation.

[0056] See attached Figure 6 , Figure 8 and Fig.10 , the pin shaft 18 is provided with threaded sections 38 at both sides of the aluminum alloy ball joint assembly, and two limit rings 39 are respectively threadedly installed on the two threaded sections 38 for clamping the aluminum alloy ball joint assembly from both ends. After the pin shaft 18 is inserted into the ball pin 2, the threaded sections 38 are exposed from both sides, and then two limit rings 39 are installed to lock the aluminum alloy ball joint assembly and put it into a limit mold with a limit groove for standby use, so that the key of the pin shaft 18 falls into the limit groove and is set at a specified angle.

[0057] The working principle of the present invention is as follows: firstly, the pneumatic clamp 17 is opened, the aluminum alloy ball joint assembly is placed by an industrial robot, the ball shell 1 is clamped, and then the lifting module 16 is started to lift the aluminum alloy ball joint assembly along the Y axis.

[0058] When the aluminum alloy ball joint assembly is lifted, the upper end of the pin shaft 18 passes through the through hole 22 and is detected by the in-position sensor 23, so that the central axis of the ball shell 1 coincides with the X-axis. At this time, the lifting is stopped, and the micro cylinder 25 is started to extend along the guide tube 24, and the through hole 22 is clamped to lock the pin shaft 18. After the in-position detection is completed, the aluminum alloy ball joint assembly and the torque sensor 14 are coaxially connected through the rotating shaft 20, the folding plate 21 and the pin shaft 18 as a bridge. In this way, the adjacent power motor 15 is started to swing the ball pin 2 around the X-axis. Within the range of fifteen degrees to the left and right, the aluminum alloy ball joint assembly can be swung around the X-axis for detection. There is no need to repeatedly calibrate the aluminum alloy ball joint assembly to center it, and the detection signal of the torque sensor 14 is transmitted to the industrial computer for recording through the signal converter.

[0059] Then, lower the aluminum alloy ball joint assembly, connect the pin shaft 18 to the torque sensor 14 on the Y-axis, start the adjacent power motor 15 to rotate the ball pin 2 around the Y-axis, and transmit the detection signal of the torque sensor 14 to the industrial computer for recording through the signal converter.

[0060] In this way, the test piece is clamped and transferred to the two detection branches in turn, and torque detection is performed alternately along the X-axis and Y-axis to avoid interference between the two detection branches. The two torque sensors 14 encourage each other and are connected, reducing damage caused by deflection. There is no need to clamp the aluminum alloy ball joint assembly for the second time, thereby improving the continuity of the entire torque detection process.

[0061] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A lightweight aluminum alloy ball joint assembly for a new energy vehicle, comprising a ball shell (1) and a ball pin (2) inserted into the ball shell (1), wherein both openings of the ball shell (1) are sleeved with dust covers (3), and two ends of the ball pin (2) are respectively passed through two dust covers (3), characterized in that: A ball seat (4) is inserted between the interior of the ball shell (1) and the outer wall of the ball pin (2), a plurality of micro beads (5) are embedded and mounted on the ball seat (4), two composite ceramic shells (6) are symmetrically sleeved on the outside of the micro beads (5), and a pull wire (7) fixedly connected to the composite ceramic shell (6) is also surrounded on the outside of the ball pin (2), and when the micro beads (5) are loaded, they push the composite ceramic shell (6) to pull the pull wire (7) to deform; When the ball pin (2) is loaded, the ball seat (4) and the micro-ball (5) surround and support the ball pin (2), and the rotation of the micro-ball (5) is used to reduce the internal friction of the ball shell (1); The microbead (5) is limited by the composite ceramic shell (6) and the tie wire (7), and maintains a state of surrounding the ball pin (2); After the ball pin (2) is relieved of its load, the pull wire (7) contracts itself to link the ball seat (4) and the micro-bead (5) to stick to the ball pin (2).

2. The lightweight aluminum alloy ball joint assembly for new energy vehicles according to claim 1 is characterized in that: A gasket (8) and a plug seat (9) are also embedded in an opening of the ball shell (1); one end surface of the gasket (8) extends into the ball shell (1) and contacts the ball seat (4); and one end surface of the plug seat (9) extends out of the ball shell (1).

3. The lightweight aluminum alloy ball joint assembly for new energy vehicles according to claim 2 is characterized in that: The two ends of the two dust covers (3) are respectively sleeved with a double clamping ring (10) and a circular clamping ring (11); the two double clamping rings (10) are respectively arranged at the two ends of the ball pin (2); and the two circular clamping rings (11) are respectively arranged at the opening of the ball shell (1) and the opening of the plug seat (9).

4. A torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle, characterized in that: A new energy vehicle lightweight aluminum alloy ball joint assembly applied to any one of claims 1-3, comprising a test bench (12), wherein the test bench (12) is provided with two steel frames (13) and two test branches respectively arranged inside the two steel frames (13), wherein the two test branches are respectively arranged along the X-axis and the Y-axis; The two detection branches each comprise a power motor (15) and a torque sensor (14) coaxially connected to the output end of the power motor (15); the bottoms of the two power motors (15) are respectively connected to the inside of two steel frames (13); a lifting module (16) is vertically installed inside one of the steel frames (13); a pneumatic clamp (17) is fixed to the output end of the lifting module (16); and a pin shaft (18) is axially inserted inside the ball pin (2); The lifting module (16) lifts the pin shaft (18) to connect to the torque sensor (14) on the X-axis, and swings the detection ball pin (2) around the X-axis; The lifting module (16) lowers the pin shaft (18) to connect to the torque sensor (14) on the Y axis, and rotates the ball pin (2) around the Y axis to separate the detection actions of the X axis and the Y axis; The pin shaft (18) links the X-axis and the Y-axis and is coaxial with the two rotation axes of the ball pin (2) to calibrate the center of the aluminum alloy ball joint assembly.

5. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 4 is characterized in that: A load-bearing frame (19) is fixed to one side of a steel frame (13) away from the lifting module (16); the middle of the load-bearing frame (19) is annular and a rotating shaft (20) is axially rotatably mounted on the annular portion; one end of the rotating shaft (20) is coaxially connected to a detection shaft of an adjacent torque sensor (14); and the other end is fixed to a folding plate (21); one end of the folding plate (21) extends obliquely upward to the Y axis and a through hole (22) is formed at the one end; The upper surface of the folding plate (21) is fixed with an in-position sensor (23), a guide tube (24) and a micro cylinder (25) in sequence along the radial direction of the through hole (22); the detection end of the in-position sensor (23) is in a concave structure and surrounds the through hole (22); the cylinder rod of the micro cylinder (25) passes through the guide tube (24) and points to the in-position sensor (23).

6. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 4 is characterized in that: Both sides of the pneumatic clamp (17) are bonded with a heat insulation plate (26) and an arc-shaped clamp (27) fixed to the heat insulation plate (26); air passages (28) are provided inside the two arc-shaped clamps (27); and electric heating plates (29) are fixed on one side of the two air passages (28) close to the Y axis.

7. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 6 is characterized in that: A copper alloy air duct (30) separated from the electric heating plate (29) is inserted into the interior of each of the two air passages (28); the two copper alloy air ducts (30) are connected to each other; a port of one of the copper alloy air ducts (30) is connected in sequence to an air intake hose (31) and a micro air pump (32); the micro air pump (32) is mounted on the test bench (12).

8. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 5 is characterized in that: A first coupling (33) is sleeved between one end of the rotating shaft (20) and a detection shaft of an adjacent torque sensor (14), an oblique tie rod (34) is hingedly connected to the outside of the first coupling (33), and one end of the oblique tie rod (34) away from the first coupling (33) is detachably connected to the upper edge of the folding plate (21).

9. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 5 is characterized in that: A second coupling (35) is fixed along the Y-axis at the detection end of one of the in-position sensors (23); the second coupling (35) is key-connected to the pin shaft (18); an alloy seat bracket (36) and a motor seat (37) are also fixed inside the two steel frames (13); the two alloy seat brackets (36) are forked and clamped outside the two torque sensors (14); and the two motor seats (37) respectively carry two power motors (15).

10. The torque detection system for a lightweight aluminum alloy ball joint assembly of a new energy vehicle according to claim 4, characterized in that: The pin shaft (18) is provided with threaded sections (38) at positions on both sides of the aluminum alloy ball joint assembly, and two limit rings (39) for clamping the aluminum alloy ball joint assembly from both ends are respectively threadedly mounted on the two threaded sections (38).

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