A loading device for automobile V-type thrust rod road simulation test

Abstract

The present application belongs to the field of automobile test, and particularly relates to a loading device for road simulation test of automobile V-shaped thrust rod, comprising an inverted T-shaped plate, a transverse loading rod, a vertical loading device, a longitudinal loading device, a stabilizing device, a fixing plate and a supporting plate. The front end of the V-shaped thrust rod is connected to the mounting frame in the middle of the T-shaped plate, and the two rear ends are connected to the supporting plate through the fixing plate; the transverse loading rod, the vertical loading device and the longitudinal loading device are respectively connected to corresponding external hydraulic driving devices, and the stabilizing device connects the T-shaped plate and the supporting plate. Compared with the prior art, the present application can apply transverse, vertical and longitudinal loads to the V-shaped thrust rod, and keep the device stable during the loading process, so as to facilitate the simulation of the multi-directional stress state of the V-shaped thrust rod under road working conditions.

Description

Technical Field

[0001] This invention relates to the field of automotive testing, and more specifically to a loading device for road simulation testing of a V-shaped thrust bar for automobiles. Background Technology

[0002] V-shaped thrust rods are crucial force-transmitting components in automotive suspension systems, typically connecting the axle to the chassis. They transmit longitudinal, lateral, and vertical forces generated during vehicle movement and constrain axle motion. To verify the structural strength, fatigue life, and connection reliability of V-shaped thrust rods under complex road loads, multi-directional, time-varying loads are usually applied to them in a laboratory using road simulation testing equipment. Existing testing loading devices are generally designed based on the dimensions and installation angles of specific V-shaped thrust rod models. When the length, opening angle, or span between the two rear ends of the V-shaped thrust rod changes, the original installation position may not correspond to the ends of the specimen, requiring replacement of the fixing plate, connecting clamps, or reconstruction of the testing fixture. This results in lengthy test preparation time and limited fixture versatility. Furthermore, the two rear ends of the V-shaped thrust rod have different spacing and connection angles depending on the opening angle. If the fixed position does not match the actual spatial orientation of the rear ends, additional preload or assembly deviations can easily occur during installation, affecting the accuracy of road simulation load transmission. During multi-directional loading, the loading connection structure may also deflect or oscillate due to the coupling effect between the loading directions, affecting the stability of the test device.

[0003] Therefore, there is a need for a test loading device that can simulate road loads in multiple directions for V-shaped thrust rods and can adapt to different lengths, opening angles, and rear end spans. Summary of the Invention

[0004] The present invention addresses the problems mentioned above by designing a loading device for road simulation testing of V-shaped thrust rods for automobiles. The present invention can apply lateral, vertical and longitudinal loads to the V-shaped thrust rod and maintain the stability of the device during the loading process, which is convenient for simulating the multi-directional force state of the V-shaped thrust rod under road conditions.

[0005] To achieve the above objectives, the present invention provides a loading device for a road simulation test of a V-shaped thrust rod for automobiles, comprising: a T-shaped plate, a transverse loading rod, a vertical loading device, a longitudinal loading device, a stabilizing device, a fixing plate, and a supporting plate. The T-shaped plate is inverted, and one end of the vertical loading device is connected to the shoulder of the T-shaped plate, while the other end is connected to an external hydraulic drive device. One end of the longitudinal loading device is connected to the front end face of the T-shaped plate, while the other end is connected to an external hydraulic drive device. One end of the transverse loading rod is connected to the upper part of the T-shaped plate, while the other end is connected to a corresponding external hydraulic drive device. One end of the stabilizing device is connected to the lower part of the front end face of the T-shaped plate, while the other end is connected to the supporting plate. The supporting plate is mounted on the base plate of the testing machine. The front end of the V-shaped thrust rod is connected to the mounting frame in the middle of the T-shaped plate, and the two rear ends of the V-shaped thrust rod are connected to the supporting plate through the fixing plate.

[0006] Furthermore, it also includes an adjustment device. The support plate has two adjustment slots. The fixing plate includes a front plate and a back plate. The back plate passes through the adjustment slots and is connected to the front plate. The V-shaped thrust rod is connected to the front plate. The fixing plate is slidably connected to the adjustment slots. The adjustment device is installed on the support plate and connected to the back plate of the fixing plate.

[0007] Furthermore, the adjustment device includes: a linkage device, a servo motor, a bracket, a first lead screw, a limiting rod, and an end plate. Both ends of the linkage device are connected to the back plates of the two fixed plates, respectively. The bracket is connected to the support plate. The servo motor is mounted on the support plate. One end of the limiting rod is connected to the support plate, and the other end is connected to the end plate. The lower end of the end plate is connected to the bracket. One end of the first lead screw is connected to the servo motor, and the other end passes through the end plate and is rotatably connected to the support plate. The middle part of the linkage device is threaded onto the first lead screw, and the linkage device is slidably connected to the limiting rod.

[0008] Furthermore, the linkage device includes: ear plates, connecting rods, sliding plates, and rotating shafts. The connecting rods rotatably connected at two ends form a group. There are several ear plates, all of which are fixedly connected to the back plate. One end of the connecting rod is rotatably connected to the ear plate, and the other end is rotatably connected to a connecting rod on another back plate through a rotating shaft on the sliding plate. The two groups of connecting rods are distributed vertically at intervals. The two rotating shafts rotatably connected to the two groups of connecting rods are located at the top and bottom of the sliding plate, respectively. The first lead screw is connected to the sliding plate, and the sliding plate is slidably connected to the limiting rod.

[0009] Furthermore, it includes an adapting clamp, which is mounted on the front plate of the fixed plate. When the opening angles of different models of V-shaped thrust rods are different, the adapting clamp can adjust the angle to connect with different V-shaped thrust rods.

[0010] Furthermore, the adapting clamp includes: an arc-shaped block, an anti-detachment part, and an anti-slip part. A transverse groove is provided on the front plate. The arc-shaped block is slidably connected in the groove. The anti-detachment part is installed on the front plate. The arc-shaped block is detachably connected to the anti-detachment part. The anti-slip part is slidably connected to both sides of the front plate and detachably connected to both sides of the arc-shaped block. The V-shaped thrust rod is connected to the arc-shaped block.

[0011] Furthermore, the anti-detachment part includes an adhesive plate and a fixing block. The upper and lower ends of the adhesive plate are fixedly connected to the fixing block. The adhesive plate abuts against the concave surface of the arc-shaped block. The fixing block is detachably connected to the front plate. An arc-shaped guide groove is provided on the arc-shaped block. At least three guide rods are vertically arranged in the groove. The guide rods are arranged in an arc and placed in the guide groove. The arc-shaped block can slide relative to the guide rods through the guide groove.

[0012] Furthermore, the anti-slip part includes: a frame, abutting rods, abutting blocks, a positioning plate, a second screw, and a guide block. Frames are provided on both sides of the arc-shaped block, and abutting rods are installed on the frames. Guide blocks are provided on both sides of the front plate. The abutting blocks are provided with ramps, and the inclined direction is towards the arc-shaped block. The bottom of the abutting block is provided with a groove and is slidably connected to the guide block. The positioning plate is fixedly connected to the side of the guide block near the arc-shaped block. The second screw is rotatably connected to the positioning plate and is threadedly connected to the abutting block. When the arc-shaped block needs to be rotated to adjust the angle for adaptation, the abutting blocks on both sides of the front plate are moved so that the abutting rods on both sides can abut against the corresponding inclined surfaces of the abutting blocks.

[0013] Furthermore, the vertical loading device includes a vertical loading rod and a universal joint, and the longitudinal loading device includes a connecting plate, a longitudinal loading rod, a linkage plate, and a movable rod. There are two vertical loading rods, each connected to the shoulders on both sides of the T-shaped plate via a universal joint. Two connecting plates are provided on the front end face of the T-shaped plate. The longitudinal loading rods are connected to both connecting plates via universal joints. The ends of the two longitudinal loading rods are connected to the linkage plate via universal joints. One end of the movable rod is rotatably connected to the linkage plate, and the other end is connected to a hydraulic drive device.

[0014] Furthermore, the stabilizing device includes a stabilizing plate and a stabilizing rod. One end of the stabilizing rod is connected to the lower part of the T-shaped plate through a universal joint, and the other end is connected to the support plate through the stabilizing plate. The support plate is mounted on the base plate of the testing machine through a linear drive device and a lead screw structure.

[0015] In summary, the loading device for road simulation testing of a V-shaped thrust rod for automobiles according to the present invention has the following advantages and beneficial technical effects: 1. This invention uses an inverted T-shaped plate to centrally connect the transverse loading rod, the vertical loading device, the longitudinal loading device, and the front end of the V-shaped thrust rod, so that each loading device can transmit transverse, vertical, and longitudinal loads to the V-shaped thrust rod respectively, thereby reproducing the multi-directional force state of the V-shaped thrust rod under road conditions. 2. The present invention connects the T-shaped plate and the support plate through a stabilizing device, constrains the non-loading direction displacement of the T-shaped plate, reduces the possibility of unexpected swaying of the T-shaped plate during multi-directional loading, and improves the structural stability of the loading device; 3. The present invention uses a linkage adjustment structure composed of a servo motor, a first lead screw, a slide plate and a connecting rod, which can drive two fixed plates to move along the adjustment groove in a linkage manner, thereby changing the span between the two fixed plates, adapting to V-shaped thrust rods with different opening angles, and reducing the workload of remaking the fixing fixture when changing the test specimen; 4. In this invention, the two sets of connecting rods are arranged vertically at intervals and are respectively connected to the rotating shafts at the top and bottom of the slide plate, so that the fixing plate is subjected to the forces from both the upper and lower positions during the span adjustment process. This helps to reduce the deflection or jamming of the fixing plate and makes the adjustment of the two rear end head installation positions more stable. 5. The arc-shaped block moves along the arc-shaped trajectory with the cooperation of the guide groove and the guide rod, which can further adjust the installation angle of the rear end of the V-shaped thrust rod, so that the rear end and the fixed plate maintain a better installation posture and reduce the additional load generated by forced assembly. 6. The anti-detachment part restricts the arc-shaped block from disengaging from the groove through the bonding plate, and the anti-slip part presses against the abutment rod through the inclined surface of the abutment block to lock the arc-shaped block after the angle adjustment is completed, thus taking into account both the adjustability of the arc-shaped block and the positional stability during the loading process. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the horizontal, vertical, and longitudinal loading device of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a side view of the adjusting device of the present invention; Figure 4 This is a schematic diagram of the structure of the adaptable fixture of the present invention; Figure 5 This is a cross-sectional view of the adaptable fixture of the present invention; Figure 6 This is the present invention. Figure 1 Enlarged view of A in the middle; Figure 7 This is the present invention. Figure 5 Enlarged view of B in the middle; Figure 8 This is a side view of the loading device of this application.

[0017] The reference numerals in the attached figures are: 1-T-shaped plate; 11-Mounting frame; 12-Horizontal loading rod; 2-Vertical loading device; 21-Vertical loading rod; 22-Universal hinge joint; 3-Longitudinal loading device; 31-Connecting plate; 32-Longitudinal loading rod; 33-Linkage plate; 34-Modible rod; 4-Stabilizing device; 41-Stabilizing plate; 42-Stabilizing bar; 5-Fixed plate; 51-Front plate; 511-Groove; 512-Guide rod; 52-Back plate; 6-Support plate; 61-Adjustment groove; 7-V-shaped thrust rod; 8-Adjusting device; 81-Linkage device; 811-Ear plate; 812-Connecting rod; 813-Slide plate; 814-Rotating shaft; 82-Servo motor; 83-Bracket; 84-First lead screw; 85-Limit rod; 86-End plate; 9-Adaptive clamp; 91-Arc-shaped block; 911-Guide groove; 92-Anti-detachment part; 921-Adhesive plate; 922-Fixing block; 93-Anti-slip part; 931-Frame; 932-Abutting rod; 933-Abutting block; 934-Positioning plate; 935-Second lead screw; 936-Guide block; 10-Testing machine base plate; 101-Guiding structure. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the described embodiments are some embodiments of this invention, but not all embodiments; the embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention; all other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The parts and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here. Contents not described in detail in this specification belong to the prior art known to those skilled in the art. The embodiments of this invention will be described in detail below with reference to the accompanying drawings: like Figure 1 and Figure 2As shown, the device includes a T-shaped plate 1, a transverse loading rod 12, a vertical loading device 2, a longitudinal loading device 3, a stabilizing device 4, two fixing plates 5, and a support plate 6. The T-shaped plate 1 is inverted, with its transverse extension forming two shoulders and its downward extension forming a middle connecting part. A mounting frame 11 is fixedly connected to the middle of the T-shaped plate 1, and the front end of the V-shaped thrust rod 7 is installed in the mounting frame 11. The mounting frame 11 can be a frame structure formed by welding two opposing ear plates and a connecting base plate. The front end of the V-shaped thrust rod 7 is detachably connected to the mounting frame 11 via a pin. A replaceable bushing can be provided between the pin and the front end to accommodate front ends with different bore diameters and reduce wear on the pin and the mounting frame 11.

[0019] The support plate 6 is vertically mounted on the base plate 10 of the testing machine, and two fixing plates 5 are horizontally spaced on the support plate 6. The two rear ends of the V-shaped thrust rod 7 are respectively connected to the two fixing plates 5, so that the front end and the two rear ends of the V-shaped thrust rod 7 form a three-point connection structure corresponding to the actual installation state.

[0020] like Figure 1 and Figure 2 As shown, one end of the transverse loading rod 12 is connected to the upper part of the T-shaped plate 1, and the other end is connected to the corresponding external hydraulic drive device. One end of the vertical loading device 2 is connected to the shoulder of the T-shaped plate 1, and the other end is connected to the corresponding external hydraulic drive device. One end of the longitudinal loading device 3 is connected to the front end face of the T-shaped plate 1, and the other end is connected to the corresponding external hydraulic drive device. The external hydraulic drive device can be an electro-hydraulic servo actuator. Each electro-hydraulic servo actuator is installed on the reaction frame of the testing machine and is independently controlled by the road simulation test control system. One end of the stabilizing device 4 is connected to the lower part of the front end face of the T-shaped plate 1, and the other end is connected to the support plate 6, which is used to restrain the unintended movement of the T-shaped plate 1 during the loading process.

[0021] like Figure 1 and Figure 6 As shown, the support plate 6 has two laterally extending adjustment slots 61. The fixing plate 5 includes a front plate 51 and a back plate 52. The front plate 51 is located on the side of the support plate 6 facing the V-shaped thrust rod 7, and the back plate 52 is located on the other side of the support plate 6. The back plate 52 has a connecting part extending towards the front plate 51. The connecting part passes through the corresponding adjustment slot 61 and connects to the front plate 51. In a specific embodiment, the connecting part is a rectangular connecting block. The connecting block is welded to the back plate 52, and after passing through the adjustment slot 61, it is detachably connected to the front plate 51 by high-strength bolts. The height of the connecting part is slightly smaller than the width of the adjustment slot 61, and the clearance between the two on one side can be 0.10-0.30mm, so that the fixing plate 5 can slide laterally along the adjustment slot 61, while reducing the vertical sway of the fixing plate 5.

[0022] like Figure 1 and Figure 6 As shown, two fixed plates 5 are respectively connected to the adjusting device 8. The adjusting device 8 is installed on the side of the support plate 6 facing away from the V-shaped thrust rod 7, and includes a linkage device 81, a servo motor 82, a bracket 83, a first lead screw 84, a limit rod 85, and an end plate 86. The bracket 83 is fixedly connected to the support plate 6 by bolts, and the lower end of the end plate 86 is fixedly connected to the bracket 83 to improve the stability of the end plate 86 when subjected to lateral forces. The servo motor 82 is fixedly installed on the support plate 6 or on a motor mount fixedly connected to the support plate 6.

[0023] like Figure 1 , Figure 3 and Figure 6 As shown, the first lead screw 84 is arranged laterally. One end is connected to the output shaft of the servo motor 82 via a coupling, and the other end passes through a bearing hole on the end plate 86 and is rotatably connected to the support plate 6 via a bearing seat. A rolling bearing is installed between the end plate 86 and the first lead screw 84. The outer ring of the bearing is fixed to the end plate 86, and the inner ring of the bearing mates with the first lead screw 84, thereby providing radial support for the first lead screw 84. A limiting rod 85 is arranged parallel to the first lead screw 84. One end of the limiting rod 85 is fixedly connected to the support plate 6, and the other end is fixedly connected to the end plate 86. The limiting rod 85 can be a single rod or multiple rods arranged in parallel. When multiple limiting rods 85 are provided, they are located on the upper and lower sides of the first lead screw 84 respectively to improve the anti-deflection capability of the slide plate 813 during lateral movement.

[0024] like Figure 6 As shown, the linkage device 81 includes an ear plate 811, a connecting rod 812, a sliding plate 813, and a rotating shaft 814. A lead screw nut that mates with the first lead screw 84 is provided in the middle of the sliding plate 813. The lead screw nut is fixedly embedded in the sliding plate 813, making the sliding plate 813 threadedly connected to the first lead screw 84. A guide hole or linear bearing that mates with a limit rod 85 is also provided on the sliding plate 813, allowing the sliding plate 813 to slide against the limit rod 85. When the servo motor 82 drives the first lead screw 84 to rotate, the first lead screw 84 and the lead screw nut on the sliding plate 813 form a helical transmission. The limit rod 85 restricts the sliding plate 813 from rotating with the first lead screw 84, causing the sliding plate 813 to move laterally. The effective travel of the sliding plate 813 is determined based on the maximum span required to be adjusted between the two fixed plates 5, and its travel endpoint is controlled by the encoder of the servo motor 82 or by a limit switch provided on the support plate 6.

[0025] Each backplate 52 is fixedly connected with an ear plate 811. In one specific embodiment, each backplate 52 has one ear plate 811 on its upper and lower parts, for a total of four ear plates 811. Two horizontally opposite connecting rods 812 form a group. One end of each connecting rod 812 is rotatably connected to the corresponding ear plate 811 via a pin, and the other ends of the two connecting rods 812 are rotatably connected to the slide plate 813 via the same rotating shaft 814.

[0026] like Figure 6 As shown, two sets of connecting rods 812 are vertically spaced. The upper set of connecting rods 812 is connected to a rotating shaft 814 mounted on the top of the slide plate 813, and the lower set of connecting rods 812 is connected to a rotating shaft 814 mounted on the bottom of the slide plate 813. The rotating shaft 814 can be an alloy steel pin with a shoulder, and the end of the pin is secured by a retaining ring or a lock nut to prevent it from coming loose. Wear-resistant bushings are provided between the connecting rods 812, the ear plates 811, and the rotating shafts 814, and a clearance sufficient for rotation is maintained. When the slide plate 813 moves laterally, the slide plate 813 drives the two sets of connecting rods 812 to move through the upper and lower rotating shafts 814, changing the angle between the connecting rods 812 and the back plate 52. The connecting rods 812 transmit the movement of the slide plate 813 to the two back plates 52, causing the two fixed plates 5 to move in conjunction along the adjusting groove 61, thereby changing the span between the two fixed plates 5. By controlling the rotation direction of the servo motor 82, the two fixed plates 5 can be moved closer or further apart to accommodate V-shaped thrust rods 7 with different opening angles and different rear end head distances.

[0027] After the span adjustment is completed, the position of the slide plate 813 can be maintained by the self-locking of the servo motor 82, the helical self-locking of the first lead screw 84, or the additional locking nut. If it is necessary to further improve the load-bearing stability of the fixed plate 5, a locking bolt passing through the adjustment groove 61 can be set between the front plate 51 and the back plate 52. After the fixed plate 5 reaches the target position, tighten the locking bolt so that the front plate 51 and the back plate 52 clamp the support plate 6.

[0028] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, each of the two fixed plates 5 has an adaptation clamp 9 mounted on its front plate 51. The adaptation clamp 9 is used to further adjust the mounting angle of the rear end of the V-shaped thrust rod 7, based on the span adjustment of the fixed plates 5, so that the axis of the rear end is matched with its mounting hole or connecting pin. The adaptation clamp 9 includes an arc-shaped block 91, an anti-detachment part 92, and an anti-slip part 93. A transverse groove 511 is provided on the side of the front plate 51 facing the V-shaped thrust rod 7, and the arc-shaped block 91 is slidably connected within the groove 511. The depth of the groove 511 is less than the thickness of the arc-shaped block 91, causing a portion of the arc-shaped block 91 to protrude from the front plate 51 for connection with the rear end of the V-shaped thrust rod 7. The arc-shaped block 91 has a rear end mounting hole or connecting lug, and the rear end of the V-shaped thrust rod 7 is detachably connected to the arc-shaped block 91 via a pin or high-strength bolt. A replaceable bushing can be installed in the mounting hole, allowing for the adaptation of different specifications of the rear end connection hole by replacing bushings with different inner diameters.

[0029] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the arc-shaped block 91 has an arc-shaped guide groove 911, and at least three guide rods 512 are vertically arranged within the groove 911. Each guide rod 512 is arranged along an arc-shaped trajectory corresponding to the guide groove 911 and extends into the guide groove 911. The guide rods 512 can be cylindrical pins that are interference-fitted with the front plate 51, or stepped pins that are threaded to the front plate 51. The width of the guide groove 911 is greater than the diameter of the guide rod 512. In one specific embodiment, the single-sided gap between the guide groove 911 and the guide rod 512 is 0.05–0.20 mm, allowing the arc-shaped block 91 to slide relative to the guide rod 512 along the arc-shaped trajectory defined by the guide groove 911, while limiting significant radial offset of the arc-shaped block 91. By moving the arc-shaped block 91 along the arc-shaped trajectory, the angle of the rear end mounting hole on the arc-shaped block 91 relative to the front plate 51 can be changed.

[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the anti-detachment part 92 includes an adhesive plate 921 and a fixing block 922. The adhesive plate 921 has an arc-shaped plate structure that adapts to the concave surface of the arc-shaped block 91 and abuts against the concave surface of the arc-shaped block 91. The upper and lower ends of the adhesive plate 921 are respectively fixedly connected to the fixing block 922, which is detachably connected to the front plate 51 by bolts. After installation, the adhesive plate 921 spans the concave side of the arc-shaped block 91, forming a pressing and limiting action on the arc-shaped block 91, preventing the arc-shaped block 91 from detaching from the groove 511 in a direction perpendicular to the front plate 51. After removing the connecting bolts on the fixing block 922, the anti-detachment part 92 can be removed from the front plate 51, and the arc-shaped block 91 can be further disassembled or replaced. Therefore, a detachable abutment and limiting relationship is formed between the arc-shaped block 91 and the anti-detachment part 92.

[0031] Anti-slip parts 93 are respectively disposed on both sides of the arc-shaped block 91, including a frame 931, abutment rod 932, abutment block 933, positioning plate 934, second lead screw 935, and guide block 936. Two frames 931 are fixedly connected to both sides of the arc-shaped block 91 and can move along the arc-shaped trajectory with the arc-shaped block 91. Each frame 931 is fixedly mounted with an abutment rod 932, which can be a cylindrical rod, and the axis of the abutment rod 932 is perpendicular to the moving direction of the abutment block 933. Guide blocks 936 are fixedly connected to both sides of the front plate 51. The bottom of the abutment block 933 has a groove that mates with the guide block 936, and the abutment block 933 is slidably connected to the guide block 936 through this groove. The guide block 936 can adopt a dovetail-shaped, T-shaped, or rectangular guide rail structure; in a specific embodiment, the guide block 936 adopts a dovetail-shaped guide rail to prevent the abutment block 933 from detaching from the front plate 51.

[0032] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the abutment block 933 has an inclined surface on the side facing the abutment rod 932, with the inclined surface tilting towards the arc-shaped block 91. The inclined surface gradually approaches the movement trajectory of the abutment rod 932 along the moving direction of the abutment block 933, so that the abutment block 933 can gradually increase its clamping force on the abutment rod 932 when it moves. The positioning plate 934 is fixedly connected to the guide block 936 on the side near the arc-shaped block 91. The second lead screw 935 is rotatably connected to the positioning plate 934 through a bearing and is threadedly connected to the abutment block 933. A handwheel, an internal hexagonal drive, or a ratchet handle can be provided at the end of the second lead screw 935 away from the abutment block 933 so that the operator can rotate the second lead screw 935.

[0033] like Figure 7 As shown, when the angle of the arc block 91 needs to be adjusted, first rotate the second lead screws 935 on both sides in the opposite direction to separate the inclined surface of the abutment block 933 from the abutment rod 932, thereby releasing the lock on the arc block 91; then push the arc block 91 along the arc trajectory defined by the guide groove 911 so that the installation position of the rear end head on the arc block 91 is aligned with the rear end head of the V-shaped thrust rod 7; after the adjustment is completed, rotate the second lead screws 935 on both sides respectively to move the two abutment blocks 933 along the corresponding guide blocks 936 until the abutment rods 932 on both sides abut against the inclined surface of the corresponding abutment block 933 respectively.

[0034] After the two abutting blocks 933 abut against the abutting rod 932 from opposite directions, they form a bidirectional limit on the arc-shaped block 91, preventing the arc-shaped block 91 from sliding along the guide groove 911 under the test load. The abutting relationship can be released by rotating the second lead screw 935 in the opposite direction. Therefore, a detachable abutting and locking relationship is formed between the anti-slip part 93 and the arc-shaped block 91.

[0035] like Figure 1 and Figure 2 As shown, the vertical loading device 2 includes two vertical loading rods 21 and a universal joint 22. The two vertical loading rods 21 are respectively disposed on both sides of the T-shaped plate 1. One end of each vertical loading rod 21 is connected to the corresponding shoulder of the T-shaped plate 1 via the universal joint 22, and the other end is connected to a corresponding external hydraulic drive device. The external hydraulic drive device drives the vertical loading rod 21 to move, thereby applying a vertical load to the T-shaped plate 1. The universal joint 22 can be a ball joint or a spherical plain bearing to accommodate changes in the angle between the vertical loading rod 21 and the T-shaped plate 1 during loading, reducing additional load.

[0036] The longitudinal loading device 3 includes two connecting plates 31, two longitudinal loading rods 32, a linkage plate 33, and a movable rod 34. The two connecting plates 31 are spaced apart and fixedly connected to the front end face of the T-shaped plate 1. Each connecting plate 31 is connected to one end of the corresponding longitudinal loading rod 32 via a universal joint 22. The other ends of the two longitudinal loading rods 32 are connected to the linkage plate 33 via the universal joint 22. One end of the movable rod 34 is rotatably connected to the linkage plate 33, and the other end is connected to the corresponding external hydraulic drive device. The external hydraulic drive device drives the two longitudinal loading rods 32 to move via the movable rod 34 and the linkage plate 33, so that the longitudinal load is transmitted to the T-shaped plate 1 through the two connecting plates 31. The linkage plate 33 coordinates the movement of the two longitudinal loading rods 32, and the universal joint 22 compensates for angle changes during the loading process.

[0037] One end of the lateral loading rod 12 is connected to the upper part of the T-shaped plate 1, and the other end is connected to the corresponding external hydraulic drive device, which is used to apply lateral load to the T-shaped plate 1. The external hydraulic drive devices for lateral, vertical and longitudinal directions can all be electro-hydraulic servo actuators, and are controlled by the road simulation test control system respectively.

[0038] The stabilizing device 4 includes a stabilizing plate 41 and a stabilizing rod 42. The stabilizing plate 41 is fixedly connected to the support plate 6. One end of the stabilizing rod 42 is connected to the lower part of the T-shaped plate 1 through a universal joint 22, and the other end is connected to the stabilizing plate 41 through a pin to provide auxiliary support for the T-shaped plate 1 and limit the unintended movement of the T-shaped plate 1 during the loading process.

[0039] like Figure 8 As shown, the stabilizer bar 42 has an adjustable length structure, specifically a pneumatic cylinder. The cylinder body end of the pneumatic cylinder is connected to the support plate 6 via the stabilizer plate 41, and the piston rod end is connected to the T-shaped plate 1 via the universal joint 22. When the position of the support plate 6 changes, the pneumatic cylinder adjusts the length of the stabilizer bar 42 by extending or retracting the piston rod, allowing the stabilizing device 4 to remain connected between the T-shaped plate 1 and the support plate 6. The stabilizer bar 42 can also be a hydraulic cylinder, an electric push rod, or a threaded telescopic rod.

[0040] The support plate 6 is mounted on the base plate 10 of the testing machine via a linear drive device and a lead screw structure, and can move towards or away from the T-shaped plate 1. Specifically, the base plate 10 of the testing machine is provided with a guide structure 101, which is a protrusion. The bottom of the support plate 6 is provided with a groove, which is slidably connected to the guide structure. The lead screw is set along the moving direction of the support plate 6 and is threadedly connected to the lead screw nut on the support plate 6. The linear drive device can be a servo motor, which drives the lead screw to rotate, causing the support plate 6 to move along the guide structure, thereby adjusting the relative distance between the support plate 6 and the T-shaped plate 1 to accommodate V-shaped thrust rods 7 of different lengths. After the support plate 6 is adjusted to the correct position, its position is maintained by the lead screw structure, and the length of the stabilizer rod 42 is adjusted accordingly.

[0041] The method of using this invention is as follows: Before the test, the relative distance between the support plate 6 and the T-shaped plate 1 is adjusted according to the length of the V-shaped thrust rod 7, and the positional change of the support plate 6 is compensated by the adjustable-length stabilizing rod 42. According to the opening angle of the V-shaped thrust rod 7 and the span of the rear end, the servo motor 82 drives the first lead screw 84 to rotate, causing the slide plate 813 to move laterally; the slide plate 813 drives the two fixed plates 5 to move along the adjustment groove 61 in linkage through the upper and lower sets of connecting rods 812, so that the two fixed plates 5 correspond to the two rear end ends of the V-shaped thrust rod 7. The angle of the arc block 91 is adjusted by the cooperation of the guide groove 911 and the guide rod 512, so that the rear end end of the V-shaped thrust rod 7 is aligned with the arc block 91, and then the inclined surfaces of the two abutment blocks 933 are used to press the abutment rod 932 to lock the arc block 91. During the test, the lateral loading rod 12, the vertical loading device 2, and the longitudinal loading device 3 applied lateral, vertical, and longitudinal loads to the T-shaped plate 1 according to the road load spectrum. The loads were transmitted to the front end of the V-shaped thrust rod 7 through the mounting frame 11, and the two rear ends and the fixing plate 5 formed a reaction force. The universal joint 22 was used to compensate for the angle changes between the loading rods, and the stabilizing device 4 was used to restrain the unexpected movement of the T-shaped plate 1, thereby simulating the multi-directional load of the V-shaped thrust rod 7 under road conditions.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A loading device for road simulation testing of a V-shaped thrust rod for automobiles, characterized in that, include: The system comprises a T-shaped plate (1), a transverse loading rod (12), a vertical loading device (2), a longitudinal loading device (3), a stabilizing device (4), a fixing plate (5), and a supporting plate (6). The T-shaped plate (1) is inverted, and one end of the vertical loading device (2) is connected to the shoulder of the T-shaped plate (1), while the other end is connected to an external hydraulic drive device. One end of the longitudinal loading device (3) is connected to the front end face of the T-shaped plate (1), while the other end is connected to an external hydraulic drive device. The transverse loading rod (12) is... One end is connected to the upper part of the T-shaped plate (1), and the other end is connected to the corresponding external hydraulic drive device. One end of the stabilizing device (4) is connected to the lower part of the front end face of the T-shaped plate (1), and the other end is connected to the support plate (6). The support plate (6) is set on the bottom plate 10 of the testing machine. The front end of the V-shaped thrust rod (7) is connected to the mounting frame (11) in the middle of the T-shaped plate (1). The two rear ends of the V-shaped thrust rod (7) are connected to the support plate (6) through the fixing plate (5).

2. The loading device for a V-shaped thrust rod road simulation test of an automobile according to claim 1, characterized in that, It also includes an adjustment device (8), two adjustment slots (61) are provided on the support plate (6), the fixing plate (5) includes a front plate (51) and a back plate (52), the back plate (52) passes through the adjustment slots (61) and is connected to the front plate (51), the V-shaped thrust rod (7) is connected to the front plate (51), the fixing plate (5) is slidably connected to the adjustment slots (61), and the adjustment device (8) is installed on the support plate (6) and connected to the back plate (52) of the fixing plate (5).

3. The loading device for a V-shaped thrust bar road simulation test of an automobile according to claim 2, characterized in that, The adjustment device (8) includes: a linkage device (81), a servo motor (82), a bracket (83), a first lead screw (84), a limiting rod (85), and an end plate (86). The two ends of the linkage device (81) are respectively connected to the back plates (52) of the two fixed plates (5). The bracket (83) is connected to the support plate (6). The servo motor (82) is mounted on the support plate (6). One end of the limiting rod (85) is connected to the support plate (6), and the other end is connected to the end plate (86). The lower end of the end plate (86) is connected to the bracket (83). One end of the first lead screw (84) is connected to the servo motor (82), and the other end passes through the end plate (86) and is rotatably connected to the support plate (6). The middle part of the linkage device (81) is threadedly connected to the first lead screw (84), and the linkage device (81) is slidably connected to the limiting rod (85).

4. The loading device for a V-shaped thrust bar road simulation test of an automobile according to claim 3, characterized in that, The linkage device (81) includes: ear plate (811), connecting rod (812), slide plate (813) and rotating shaft (814). The connecting rod (812) with two rotatably connected ends is a group. There are several ear plates (811) and they are all fixedly connected to the back plate (52). One end of the connecting rod (812) is rotatably connected to the ear plate (811), and the other end is rotatably connected to the connecting rod (812) on another back plate (52) through the rotating shaft (814) on the slide plate (813). The two groups of connecting rods (812) are distributed vertically at intervals. The two rotating shafts (814) rotatably connected to the two groups of connecting rods (812) are located at the top and bottom of the slide plate (813) respectively. The first lead screw (84) is connected to the slide plate (813), and the slide plate (813) is slidably connected to the limiting rod (85).

5. A loading device for road simulation testing of a V-shaped thrust rod for automobiles according to claim 2, characterized in that, Includes an adaptation clamp (9), which is mounted on the front plate (51) of the fixed plate (5). When the opening angle of different types of V-shaped thrust rods (7) is different, the adaptation clamp (9) can adjust the angle to connect with different V-shaped thrust rods (7).

6. A loading device for road simulation testing of a V-shaped thrust rod for automobiles according to claim 5, characterized in that, The adapting clamp (9) includes: an arc-shaped block (91), an anti-detachment part (92), and an anti-slip part (93). A transverse groove (511) is provided on the front plate (51). The arc-shaped block (91) is slidably connected in the groove (511). The anti-detachment part (92) is installed on the front plate (51). The arc-shaped block (91) is detachably connected to the anti-detachment part (92). The anti-slip part (93) is slidably connected to both sides of the front plate (51) and detachably connected to both sides of the arc-shaped block (91). The V-shaped thrust rod (7) is connected to the arc-shaped block (91).

7. A loading device for a road simulation test of a V-shaped thrust rod for automobiles according to claim 6, characterized in that, The anti-detachment part (92) includes a bonding plate (921) and a fixing block (922). The upper and lower ends of the bonding plate (921) are fixedly connected to the fixing block (922). The bonding plate (921) abuts against the concave surface of the arc-shaped block (91). The fixing block (922) is detachably connected to the front plate (51). The arc-shaped block (91) has an arc-shaped guide groove (911). There are no less than three guide rods (512) vertically arranged in the groove (511). The guide rods (512) are arranged in an arc shape and placed in the guide groove (911). The arc-shaped block (91) can slide relative to the guide rods (512) through the guide groove (911).

8. A loading device for road simulation testing of a V-shaped thrust rod for automobiles according to claim 6, characterized in that, The anti-slip part (93) includes: a frame (931), abutting rod (932), abutting block (933), positioning plate (934), second lead screw (935), and guide block (936). The frame (931) is provided on both sides of the arc-shaped block (91), and the abutting rod (932) is installed on the frame (931). The guide block (936) is provided on both sides of the front plate (51). The abutting block (933) is provided with a ramp, and the inclined direction is towards the arc-shaped block (91). The bottom of the abutting block (933) is provided with... The positioning plate (934) is fixedly connected to the guide block (936) on the side of the guide block (936) near the arc block (91). The second lead screw (935) is rotatably connected to the positioning plate (934) and is threadedly connected to the abutment block (933). When the arc block (91) needs to be rotated to adjust the angle for adaptation, the abutment blocks (933) on both sides of the front plate (51) are moved so that the abutment rods (932) on both sides can abut against the inclined surface of the corresponding abutment block (933).

9. A loading device for road simulation testing of a V-shaped thrust rod for automobiles according to claim 1, characterized in that, The vertical loading device (2) includes a vertical loading rod (21) and a universal joint (22). The longitudinal loading device (3) includes a connecting plate (31), a longitudinal loading rod (32), a linkage plate (33), and a movable rod (34). There are two vertical loading rods (21), each connected to the shoulders on both sides of the T-shaped plate (1) through a universal joint (22). Two connecting plates (31) are provided on the front end face of the T-shaped plate (1). The longitudinal loading rod (32) is connected to both connecting plates (31) through a universal joint (22). The ends of the two longitudinal loading rods (32) are connected to the linkage plate (33) through a universal joint (22). One end of the movable rod (34) is rotatably connected to the linkage plate (33), and the other end is connected to the hydraulic drive device.

10. A loading device for road simulation testing of a V-shaped thrust rod for automobiles according to claim 1, characterized in that, The stabilizing device (4) includes a stabilizing plate (41) and a stabilizing rod (42). One end of the stabilizing rod (42) is connected to the lower part of the T-shaped plate (1) through a universal joint (22), and the other end is connected to the support plate (6) through the stabilizing plate (41). The support plate (6) is installed on the base plate of the testing machine through a linear drive device and a lead screw structure.

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