A new material automobile part strength detection device

Abstract

The application discloses a new material automobile part strength detection equipment and belongs to the field of automobile part strength detection equipment. The equipment base is externally provided with an air compressor, the top of the equipment base is connected with a rotating disc through a shaft, and the top of the rotating disc is provided with a supporting plate. One side of the equipment base is provided with a stress receiving mechanism, which limits one side of the automobile part. The stress receiving mechanism senses the stress received by the automobile part by using a pressure sensor, converts the stress signal into an electric signal in real time, and outputs the electric signal. The other side of the equipment base is provided with a pressure applying mechanism. The annular distribution limiting holes of the limiting disc allow the side connecting seat connected with the arc-shaped arm to be multi-angle distance adjusted in the horizontal plane. According to the arc-shaped angle of the automobile part to be detected, two groups of pressure sensors are symmetrically arranged to sense the stress of the automobile part.

Description

Technical Field

[0001] This invention belongs to the field of component testing equipment, and specifically relates to a new type of strength testing equipment for automotive components made of new materials. Background Technology

[0002] Lightweighting of vehicles has become a key focus for major automakers. Composite materials and their molding technology are becoming one of the key paths to achieve lightweighting of vehicles. Molding is one of the key processes in the production of composite material parts, with advantages such as high efficiency, excellent mechanical properties and good surface quality.

[0003] However, uneven fiber distribution or incomplete resin curing may lead to insufficient local strength in the molding process. Tensile and compression tests can be used to identify potential defects and prevent parts from failing under extreme conditions such as collisions. At the same time, fatigue testing can simulate stress changes in actual use and predict crack initiation and propagation trends.

[0004] The current testing equipment typically uses a fixed integrated design for the pressure application mechanism and sensing mechanism, which has insufficient freedom of position adjustment. When testing automotive parts, such as brackets or curved profiles with asymmetric reinforcing ribs, the fixed pressure point will cause local stress concentration. The strain gauges far from the pressure application side will experience measurement lag due to force transmission attenuation, which will reduce the confidence of fatigue life prediction.

[0005] Furthermore, the lack of corresponding protective mechanisms on the outside of the testing equipment can cause components to break down due to overload or stress concentration during pressure testing, resulting in mechanical injuries such as cuts and impact injuries to test personnel. Summary of the Invention

[0006] The purpose of this invention is to provide a new type of automotive component strength testing equipment, which tests the strength of automotive components by pulling and pressing one side of the component, and provides protective treatment for the component during the testing process.

[0007] A new type of automotive parts strength testing equipment includes an equipment base, a turntable, a pressure sensor, a push-pull force gauge, and a vacuum contour suction cup. An air compressor is installed on the outside of the equipment base, and the turntable is axially connected to the top of the equipment base. A support plate is installed on the top of the turntable.

[0008] A force-bearing mechanism is installed on one side of the equipment base, which limits one side of the automotive component. A pressure sensor detects the pressure on the component and converts the pressure signal into an electrical signal in real time. A pressure-applying mechanism is installed on the other side of the equipment base. This mechanism applies pressure or pulls on one side of the automotive component. The component is then adsorbed by a vacuum contour suction cup, and pulled on another side using a push-pull force gauge. A constant pulling force is applied, and the yield strength, tensile strength, and elongation at break are recorded until the sample fails.

[0009] The solenoid valve is installed on one side of the equipment base. The input end of the solenoid valve is connected to the output end of the air compressor, and the output end of the solenoid valve is connected to the output end of the cylinder. A protective mechanism is provided on one side of the equipment base. The protective mechanism moves synchronously with the pressure application mechanism to protect one side of the test component and prevent the component from breaking and splashing during the pressure application process.

[0010] Preferably, the force-bearing mechanism includes a vertical guide rail, an arc-shaped arm, a side connector, a pressure sensor, positioning holes, a connecting rod, and a locking assembly. Positioning holes are evenly spaced on the outer side of the vertical guide rail. A connecting rod is connected to one side of the vertical guide rail. An arc-shaped arm is connected to the outer side of the vertical guide rail. A side connector is provided on one side of the arc-shaped arm. A pressure sensor is connected to the outer side of the side connector. A locking assembly is provided on the outer side of the side connector.

[0011] Preferably, the vertical guide rail is connected to a set of side seats via an arc-shaped arm connected to one side, and the vertical guide rail is connected to the outside of the turntable via a connecting rod installed on one side.

[0012] Preferably, the pressure applying mechanism includes a cylinder, a side push seat, a rubber pad, a linear guide rail, a flange slide, and fasteners. The cylinder is mounted on the outside of the side push seat, the side push seat is disposed on one side of the equipment base, a flange slide is connected to one side of the side push seat, a linear guide rail is connected to the outside of the flange slide, the linear guide rail is mounted on one side of the equipment base, the fasteners are connected through the flange slide, and the tail end of the fasteners is connected to one side of the equipment base.

[0013] Preferably, the side horizontal push base is connected to the outside of the push-pull force gauge through grooves on both sides, and the pressure sensor is threadedly connected to the back support of the vacuum contour suction cup through a threaded adapter.

[0014] Preferably, the protective mechanism includes a side protective plate, a sliding groove, a slider, a guide rod, and fastening holes. The side protective plate is positioned directly above the support plate. The top of the support plate has a sliding groove, and a guide rod is disposed inside the sliding groove. The guide rod is connected to the slider. Fastening holes are rectangularly distributed on the back of the side protective plate, and the top of the slider is connected to the side protective plate.

[0015] Preferably, the side protective plate is connected to the slide groove by a slider at its bottom end, and the side protective plate is connected to one side of the side push seat by a through fastening hole.

[0016] Preferably, the locking assembly includes a limiting plate, a nut post, limiting holes, and a damping shaft. The limiting plate is located below the side coupling seat. The nut post is installed at the bottom end of the arc-shaped arm and is arranged parallel to one side of the limiting plate. The limiting holes are distributed in a ring on the outer side of the limiting plate. The arc-shaped arm has a grooved portion connected to the damping shaft, which is connected through the side coupling seat. The top end of the nut post is connected to the bottom end of the arc-shaped arm.

[0017] Preferably, the limiting plate is arranged parallel to the nut post through one of the limiting holes opened on the outer side, and the nut post is connected to the limiting plate by bolts.

[0018] The advantages of this invention are:

[0019] This invention allows the side connectors connected to the arc-shaped arm to be adjusted at multiple angles in the horizontal plane through the annular distribution of limiting holes on the limiting plate. Two sets of pressure sensors are symmetrically arranged according to the arc angle of the automotive component to be tested, sensing the pressure on the component. The limiting plate at the bottom of the side connector is vertically locked by a nut column, quickly adapting to the curved contour of the component. Simultaneously, the nut column and the positioning holes of the vertical guide rail work together to lock the vertical and arc rotation directions, detecting the pressure received by the automotive component. During the pulling process of the side pusher, the side protective plate protects the strength monitoring part. The elastic sliding of the slider and guide rod converts the impact energy of the fracture fragments into frictional heat, reducing the risk of splashing. Following the vacuum contour suction cup during the pulling process, it protects the pulled part, preventing the component from breaking too quickly and causing splashing metal fragments to affect the operators or related equipment during the testing process. By using a combination of linear guide rails and flange slides, displacement adjustment is achieved to ensure that the pressure position is strictly matched with the size of the parts. Then, the side pusher of the corresponding size is connected to the output end of the cylinder, and the side pusher is positioned with the side guard plate. This satisfies the need for pressure application and protection treatment of automotive parts of different sizes. The flange slide of the corresponding height is also selected according to the size of the automotive parts to avoid interference caused by the cylinder during operation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall top view structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the protective structure in this invention;

[0023] Figure 4 This is a schematic diagram of the injection test in this invention;

[0024] Figure 5 This is a schematic diagram of the force-bearing mechanism in this invention;

[0025] Figure 6 This is a schematic diagram of the locking component in this invention;

[0026] Figure 7 This is a schematic diagram of the side-mounted rotating mechanism in this invention;

[0027] Figure 8 This is a top-section schematic diagram of the side transverse push seat in this invention.

[0028] in:

[0029] 1. Equipment base; 2. Air compressor; 3. Pallet;

[0030] 4. Force-bearing mechanism; 41. Vertical guide rail; 42. Arc arm; 43. Side coupling; 44. Pressure sensor; 45. Positioning hole; 46. Connecting rod;

[0031] 5. Pressure applying mechanism; 51. Cylinder; 52. Side push seat; 53. Rubber pad; 54. Linear guide rail; 55. Flange slide; 56. Fasteners;

[0032] 6. Turntable;

[0033] 7. Protective mechanism; 71. Side protective plate; 72. Slide groove; 73. Sliding block; 74. Guide rod; 75. Fastening hole;

[0034] 8. Solenoid valve;

[0035] 9. Locking assembly; 91. Limiting plate; 92. Nut post; 93. Limiting hole; 94. Damping shaft;

[0036] 10. Push-pull force gauge; 11. Vacuum contour suction cup. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1 to 8 As shown, a new type of automotive parts strength testing equipment includes an equipment base 1, a turntable 6, a pressure sensor 44, a push-pull force gauge 10, and a vacuum contour suction cup 11. An air compressor 2 is provided on the outside of the equipment base 1, and the turntable 6 is axially connected to the top of the equipment base 1. A support plate 3 is provided on the top of the turntable 6.

[0039] A force-receiving mechanism 4 is provided on one side of the equipment base 1. The force-receiving mechanism 4 limits one side of the automotive part. A pressure sensor 44 senses the pressure on the automotive part and converts the pressure signal into an electrical signal output in real time. A pressure-applying mechanism 5 is provided on the other side of the equipment base 1. The pressure-applying mechanism 5 applies pressure or pulls on one side of the automotive part. The automotive part is adsorbed by a vacuum contour suction cup 11, and then pulled on one side by a push-pull force gauge 10. A tensile force is applied at a constant speed, and the yield strength, tensile strength, and elongation at break are recorded until the sample fails.

[0040] The solenoid valve 8 is installed on one side of the equipment base 1. The input end of the solenoid valve 8 is connected to the output end of the air compressor 2, and the output end of the solenoid valve 8 is connected to the output end of the cylinder 51. A protective mechanism 7 is provided on one side of the equipment base 1. The protective mechanism 7 moves synchronously with the pressure applying mechanism 5. The protective mechanism 7 protects one side of the test component to prevent the component from breaking and splashing during the pressure application process.

[0041] The force-bearing mechanism 4 includes a vertical guide rail 41, an arc-shaped arm 42, a side connecting seat 43, a pressure sensor 44, positioning holes 45, a connecting rod 46, and a locking assembly 9. Positioning holes 45 are evenly spaced on the outer side of the vertical guide rail 41. A connecting rod 46 is connected to one side of the vertical guide rail 41. An arc-shaped arm 42 is connected to the outer side of the vertical guide rail 41. A side connecting seat 43 is provided on one side of the arc-shaped arm 42. A pressure sensor 44 is connected to the outer side of the side connecting seat 43. A locking assembly 9 is provided on the outer side of the side connecting seat 43. The vertical guide rail 41 is connected to a set of side connecting rods 46 via the arc-shaped arm 42 connected to one side. The vertical guide rail 41 is connected to the outside of the turntable 6 via a connecting rod 46 installed on one side. The equally spaced positioning holes 45 of the vertical guide rail 41 cooperate with the locking assembly 9, allowing the height of the arc arm 42 and the side connecting seat 43 to be flexibly adjusted to adapt to different working conditions. The locking mechanism of the annular limiting hole 93 of the limiting plate 91 and the nut column 92 can realize the circumferential angle adjustment of the arc arm 42. The bending angle can be adjusted through the rotary joint to adapt to the fitting support of curved parts. The pressure sensor 44 is directly integrated on the outside of the side connecting seat 43 to monitor the contact force or load changes in real time and feed them back to the control system.

[0042] The pressure applying mechanism 5 includes a cylinder 51, a side horizontal push seat 52, a rubber pad 53, a linear guide rail 54, a flange-type slide 55, and a fastener 56. The cylinder 51 is mounted on the outside of the side horizontal push seat 52, which is located on one side of the equipment base 1. A flange-type slide 55 is connected to one side of the side horizontal push seat 52, and a linear guide rail 54 is connected to the outside of the flange-type slide 55. The linear guide rail 54 is mounted on one side of the equipment base 1. The fastener 56 passes through the flange-type slide 55, and its tail end is connected to one side of the equipment base 1. The side horizontal push seat 52 is accessed via openings on both sides... The groove is connected to the outside of the push-pull force gauge 10. The pressure sensor 44 is threadedly connected to the back bracket of the vacuum contour suction cup 11 through a threaded adapter. The linear guide rail 54 is installed on the equipment base 1. The flange slide 55 is laterally displaced through the linear guide rail 54 to ensure that the side push seat 52 moves along a straight trajectory. During the testing of automotive parts, the position of the cylinder 51 is adjusted, and the flange slide 55 is positioned on one side of the equipment base 1 by fasteners 56, thereby preventing the cylinder 51 from shaking during operation. The pressure point of the cylinder 51 can also be adjusted accordingly.

[0043] The protective mechanism 7 includes a side protective plate 71, a sliding groove 72, a slider 73, a guide rod 74, and fastening holes 75. The side protective plate 71 is positioned directly above the support plate 3. The top of the support plate 3 has a sliding groove 72, and the inside of the sliding groove 72 is provided with a guide rod 74. The guide rod 74 is connected to the slider 73 through the groove. The back of the side protective plate 71 has rectangularly distributed fastening holes 75. The top of the slider 73 is connected to the side protective plate 71. The side protective plate 71 is connected to the sliding groove 72 via the slider 73 at its bottom end. The side protective plate 71 is connected to one side of the side horizontal push seat 52 via the through-hole fastening hole 75. The slider 73 is guided by the sliding groove 72 and the guide rod 74 to adjust the horizontal position of the side protective plate 71 and adapt to parts of different sizes.

[0044] The locking assembly 9 includes a limiting plate 91, a nut post 92, a limiting hole 93, and a damping shaft 94. The limiting plate 91 is located below the side coupling 43. The nut post 92 is installed at the bottom end of the arc-shaped arm 42 and is parallel to one side of the limiting plate 91. The limiting holes 93 are distributed in a ring on the outer side of the limiting plate 91. The arc-shaped arm 42 has a grooved portion connected to the damping shaft 94, which passes through and connects to the side coupling 43. The top end of the nut post 92 is connected to an arc-shaped... At the bottom end of the curved arm 42; the limiting plate 91 is parallel to the nut post 92 through one of the limiting holes 93 opened on the outer side, and the nut post 92 is connected to the limiting plate 91 by bolts; for example, when testing the strength of car door components, the curved arm 42 is rotated to adjust to the corresponding angle according to the curvature of the car door. At the same time, the operator pulls the curved arm 42 to raise and lower it on the outer side of the vertical guide rail 41 according to the height or thickness of the car door, aligns the nut post 92 with the limiting hole 93 of the limiting plate 91, and tightens the bolts.

[0045] The pressure test procedure for automotive parts is as follows: Air compressor 2 serves as the power source. It draws in air from the atmosphere and compresses it to the set pressure, continuously providing high-pressure gas to the system. Solenoid valve 8 is used to control the on / off and flow direction of the compressed gas inside air compressor 2. Solenoid valve 8 injects the test pressure directly into the cylinder 51, causing the cylinder 51 to extend or retract as instructed. The cylinder 51 contains a piston and piston rod. When compressed air enters the rodless chamber, it pushes the piston, generating thrust to extend the piston rod. The cylinder 51 drives the side thrust seat 52 to move, so that the rubber pad 53 on one side of the side thrust seat 52 applies pressure to one side of the automotive part. At this time, the automotive part is placed on the surface of the support plate 3, so that the other side of the automotive part is squeezed against the side of the pressure sensor 44. The pressure sensor 44 senses the force applied by the pressure block on the automotive part. The operator compares the standard data that the part can withstand with the pressure data after the automotive part is broken to ensure that the part is within a reasonable strength range.

[0046] The procedure for tensile testing of automotive parts is as follows: Place the automotive parts flat on the surface of the vacuum conformal suction cup 11, start the vacuum pump to adsorb and fix them, ensuring no displacement or loosening. The automotive parts are fixed to the surface of the support plate 3 by bolts. Start the push-pull force gauge 10 and apply a tension or push force at a uniform speed until the preset value or the part fails. Monitor the force value curve and displacement changes in real time. During the tensile process, the automotive parts will undergo elastic deformation of the material, the force value will increase linearly, and there will be no obvious defects on the surface. When the tensile force exceeds the yield point, the automotive parts will undergo plastic deformation, local stress concentration, and microcracks may be generated on the surface. At this time, the tester should stay away from the equipment base 1. When the automotive parts break, the fracture surface will be fibrous or flat. There may be splashing of automotive parts. The operator can also attach strain gauges to key parts such as the door anti-collision beam. The side push seat 52 applies pressure to the door anti-collision beam to cause strain gauge deformation. Micro-strain is measured by electrical signal conversion. It is suitable for bending or torsion conditions.

[0047] During the testing of automotive parts, the side guard plate 71 is connected to the side push seat 52 through equally spaced fastening holes 75. When the side push seat 52 is pushed or pulled, the side guard plate 71 moves to protect it. The bottom of the side guard plate 71 is inserted into the groove 72 at the top of the support plate 3 through the slider 73 to form a horizontal sliding. The guide rod 74 passes through the slider 73 to ensure that the side guard plate 71 can only move horizontally along the direction of the groove 72. When the automotive parts break or splash during the tensile test, the side guard plate 71 guides the parts to slide down to the support plate 3, reducing the vertical impact force. The fit gap between the guide rod 74 and the slider 73 allows the side guard plate 71 to elastically displace and absorb high-frequency vibration energy.

[0048] During the test, the automotive parts are subjected to the force applied by the pressure block. The operator pushes the side lateral push seat 52 through the cylinder 51, so that the side lateral push seat 52 maintains a certain pressure on the parts for a period of time. The pressure sensor 44 senses the force applied by the pressure block on the automotive parts and can observe whether the surface of the parts deforms under a certain pressure, or whether the parts can rebound after deformation. The external load is transmitted to the arc arm 42 through the side connecting seat 43, and after being buffered by the damping shaft 94, it is distributed to the vertical guide rail 41 and the connecting rod 46, and finally carried by the turntable 6. The pressure sensor 44 monitors the lateral force in real time, and the data is fed back to the control system for dynamic adjustment.

[0049] The positioning hole 45 of the vertical guide rail 41 cooperates with the locking assembly 9. After loosening the bolts at the connection between the arc arm 42 and the vertical guide rail 41, the arc arm 42 can slide up and down along the guide rail, align with the required positioning hole 45, and then be re-locked to achieve vertical positioning. Then, by pulling the side coupling 43, the unfolding angle of the side coupling 43 and the pressure sensor 44 is adjusted. After the angle of the pressure sensor 44 is adjusted, the target limiting hole 93 on the surface of the limiting plate 91 is aligned with the nut post 92 and fixed by bolts, changing the horizontal unfolding angle of the arc arm 42.

[0050] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A new material automobile parts strength detection equipment, characterized in that: Including device base (1), turntable (6), pressure sensor (44), electromagnetic valve (8), push-pull force meter (10) and vacuum profiling chuck (11), the outside of the device base (1) is provided with air compressor (2), the shaft of the device base (1) is connected with turntable (6), the top of the turntable (6) is provided with a supporting plate (3);The side of the device base (1) is provided with a force receiving mechanism (4), the force receiving mechanism (4) limits one side of the automobile parts, the pressure received by the automobile parts is inducted by the pressure sensor (44), and the pressure signal is converted into an electric signal output in real time, the other side of the device base (1) is provided with a pressure applying mechanism (5);The pressing mechanism (5) presses or pulls one side of the automobile parts, the vacuum profiling chuck (11) adsorbs one side of the automobile parts, and the push-pull force gauge (10) pulls one side of the automobile parts at a constant speed to record the yield strength, tensile strength and elongation at break until the sample fails. The solenoid valve (8) is installed on one side of the equipment base (1), the output end of the air compressor (2) is connected to the input end of the solenoid valve (8), and the output end of the solenoid valve (8) is connected to the output end of the air cylinder (51). One side of the equipment base (1) is provided with a protection mechanism (7) which is displaced synchronously with the pressing mechanism (5). The protection mechanism (7) protects one side of the test parts to prevent the parts from collapsing and splashing during the pressing process. The stress mechanism (4) comprises a vertical guide rail (41), an arc-shaped arm (42), a side connecting seat (43), a pressure sensor (44), a positioning hole (45), a connecting rod (46) and a locking assembly (9). The outer side of the vertical guide rail (41) is provided with positioning holes (45) at equal intervals. The vertical guide rail (41) is connected to the connecting rod (46) on one side. The outer side of the vertical guide rail (41) is connected to the arc-shaped arm (42). The arc-shaped arm (42) is provided with a side connecting seat (43) on one side. The outer side of the side connecting seat (43) is connected to the pressure sensor (44). The outer side of the side connecting seat (43) is provided with the locking assembly (9). The vertical guide rail (41) is connected to a group of side connecting seats (43) through the arc-shaped arm (42) connected on one side. The vertical guide rail (41) is connected to the outer side of the turntable (6) through the connecting rod (46) installed on one side. The locking assembly (9) comprises a limiting disc (91), a nut column (92), a limiting hole (93) and a damping shaft (94). The limiting disc (91) is arranged below the side connecting seat (43). The nut column (92) is installed at the bottom end of the arc-shaped arm (42). The nut column (92) is arranged in parallel with one side of the limiting disc (91). The limiting holes (93) are annularly distributed on the outer side of the limiting disc (91). The arc-shaped arm (42) is connected to the damping shaft (94) through the groove. The damping shaft (94) penetrates the side connecting seat (43). The top end of the nut column (92) is connected to the bottom end of the arc-shaped arm (42). The limiting disc (91) is arranged in parallel with the nut column (92) through one of the limiting holes (93) arranged on the outer side. The nut column (92) is connected to the limiting disc (91) through bolts.

2. The new material automobile parts strength detection equipment according to claim 1, characterized in that, The pressure applying mechanism (5) comprises a cylinder (51), a side horizontal push base (52), a rubber pad (53), a linear guide rail (54), a flange slide (55) and a fastener (56), the cylinder (51) is installed outside the side horizontal push base (52), the side horizontal push base (52) is arranged on one side of the equipment base (1), one side of the side horizontal push base (52) is connected with the flange slide (55), the outer side of the flange slide (55) is connected with the linear guide rail (54), the linear guide rail (54) is installed on one side of the equipment base (1), the fastener (56) penetrates the flange slide (55), and the tail end of the fastener (56) is connected with one side of the equipment base (1).

3. The new material automobile parts strength detection equipment according to claim 2, characterized in that, The side horizontal push base (52) is connected with the outer side of the push-pull force gauge (10) through the grooves arranged on both sides, and the pressure sensor (44) is screwedly connected with the back support of the vacuum profiling chuck (11) through the threaded adapter.

4. The new material automobile parts strength detection equipment according to claim 1, characterized in that, The protection mechanism (7) comprises a side protection plate (71), a sliding groove (72), a sliding block (73), a guide rod (74) and a fastening hole (75), the side protection plate (71) is arranged directly above the supporting plate (3), the top end of the supporting plate (3) is provided with the sliding groove (72), the guide rod (74) is arranged in the sliding groove (72), the guide rod (74) penetrates the sliding block (73), the back of the side protection plate (71) is provided with the fastening hole (75) in a rectangular distribution, and the top end of the sliding block (73) is connected with the side protection plate (71).

5. The new material automobile parts strength detection equipment according to claim 4, characterized in that, The side protection plate (71) is connected with the sliding groove (72) through the sliding block (73) arranged at the bottom end, and the side protection plate (71) is connected with one side of the side horizontal push base (52) through the fastening hole (75) arranged in penetration.

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