Wheel impact test device with adjustable wheel inclination angle swing radius

Abstract

The utility model relates to a wheel impact test device with an adjustable wheel inclination angle swing radius, which is used for solving the problem that a wheel impact test result is inconsistent with a whole vehicle road test result and an actual use condition result due to the fact that the wheel inclination angle swing radius of wheel impact test equipment in the prior art is fixed and non-adjustable. The wheel impact test device with the adjustable wheel inclination angle swing radius comprises a supporting assembly, a damping assembly and a telescopic assembly used for assembling a wheel assembly. The telescopic assembly is rotatably connected with the supporting assembly and the damping assembly, and the telescopic assembly can be extended or shortened according to the length of the suspension lower swing arm needing to be simulated.

Description

Technical Field

[0001] The utility model relates to the field of passenger car wheel testing, in particular to a wheel impact testing device with adjustable wheel inclination angle swing radius. Background Art

[0002] In the existing technology, many technical specifications of new energy vehicles still follow the design and evaluation standards of traditional fuel vehicles. Since new energy vehicles have some significant characteristics different from traditional fuel vehicles and their operating conditions are more stringent than traditional fuel vehicles, after the design and evaluation standards of traditional fuel vehicles are adopted and accepted, the road test results of the whole vehicle cannot be accurately matched with the bench test results.

[0003] For example, the method I mentioned in the industry standard "QC / T 991 Passenger car light alloy wheel 90 degree impact test method" is a bench test method for the design strength of the inner rim of aluminum wheels commonly used in the domestic industry. The wheel radial impact test equipment provided in CN116337485A is a test conducted using a similar structure equipment specified in the above standard. When the inventor used the method in the above standard to test new energy vehicles, he found that the wheel impact test results were inconsistent with the vehicle road test results and the actual use condition results.

[0004] After analysis, the main reason for the above problems is that the wheel impact test equipment used in the existing solution does not take into account the wheel camber swing radius when the wheel assembly is assembled on different vehicle models. In the wheel impact test equipment used in the existing solution, the wheel camber swing radius adopts a fixed size. Once the wheel camber swing radius used on the wheel impact test equipment is different from the wheel camber swing radius on the actual vehicle, the aforementioned problem of the wheel impact test results not being able to accurately match the vehicle road test results will occur. Utility Model Content

[0005] The utility model provides a wheel impact test device with an adjustable wheel inclination swing radius, which is used to solve the problem in the prior art that the wheel impact test result cannot be accurately matched with the whole vehicle road test result because the wheel inclination swing radius of the wheel impact test equipment is fixed and cannot be adjusted.

[0006] The technical solution of the utility model is:

[0007] The utility model provides a wheel impact test device with adjustable wheel inclination swing radius, comprising: a support component, a shock absorbing component and a telescopic component for assembling a wheel assembly;

[0008] The telescopic assembly is rotatably connected to the supporting assembly and the shock absorbing assembly, and the telescopic assembly can be extended or shortened according to the wheel inclination swing radius when the wheel assembly is assembled on a real vehicle.

[0009] Furthermore, the telescopic assembly can be tilted upward or downward relative to the horizontal direction with the position where it is rotatably connected to the supporting assembly as a base point to meet the inclination angle requirement of the wheel assembly.

[0010] Furthermore, when the telescopic assembly is telescoped and tilted at a first tilt angle relative to the horizontal direction, the support assembly is tilted at a second tilt angle relative to the horizontal direction, and the tilt direction of the telescopic assembly is parallel to the tilt direction of the support assembly to maintain the distance between the wheel assembly and the ground unchanged.

[0011] Furthermore, the telescopic assembly comprises:

[0012] a first shaft rotatably connected to the support assembly;

[0013] A second shaft, one end of which is movably inserted into the first shaft or movably mounted on the first shaft, and the other end of which is used for assembling the wheel assembly;

[0014] The first shaft is detachably connected to the second shaft;

[0015] The first shaft or the second shaft is rotatably connected to the shock absorbing assembly.

[0016] Furthermore, the support assembly comprises:

[0017] A support rotatably connected to the telescopic assembly;

[0018] When the telescopic assembly is telescoped and the telescopic assembly is tilted at a first tilt angle relative to a horizontal direction, the support is tilted at a second tilt angle relative to the horizontal direction.

[0019] Furthermore, the support assembly also includes:

[0020] A base is detachably mounted below the support, and the base and the support form an oblique tooth engagement;

[0021] The oblique teeth between the base and the support are inclined relative to the horizontal direction at a first predetermined angle that is less than or equal to the second inclination angle.

[0022] Furthermore, when the first predetermined angle is smaller than the second inclination angle, a pad is provided under the base, the pad is inclined at a second predetermined angle relative to the horizontal direction, and the sum of the first predetermined angle and the second predetermined angle is equal to the second inclination angle.

[0023] Furthermore, the base is provided with a strip groove, and the support is installed with a pre-installed nut;

[0024] The support and the base are detachably assembled by passing a screw through the strip-shaped groove from the bottom of the base and then being screwed to the pre-installed nut.

[0025] Furthermore, the groove width of the strip groove facing the support is smaller than the groove width of the strip groove away from the support;

[0026] The head of the screw is accommodated in the area of ​​the strip-shaped groove where the groove width is larger, so that the lower surface of the base is in contact with the component on which it is placed.

[0027] Furthermore, the wheel impact test device with adjustable wheel inclination swing radius is used to perform 30°, 45°, 60° and / or 90° impact tests on the wheel assembly.

[0028] The beneficial effects of the utility model are:

[0029] The length of the telescopic component corresponds to the wheel camber swing radius on the actual vehicle. The telescopic component is set to be telescopic, and the length of the telescopic component can be adjusted according to the wheel camber swing radius on the actual vehicle. The adjusted telescopic component length simulates the wheel camber swing radius on the actual vehicle, so that the obtained test results are closer to the actual situation of the wheel assembly on the whole vehicle, so it can improve the consistency between the wheel impact test results and the whole vehicle road test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The assembly diagram of the wheel impact test device with adjustable wheel inclination angle swing radius in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0031] Figure 2 The assembly diagram of the wheel impact test device with adjustable wheel inclination angle swing radius in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0032] Figure 3 It is a side view of a wheel impact test device with adjustable wheel inclination angle swing radius in an embodiment of the utility model;

[0033] Figure 4 It is a schematic diagram of the assembly of the support and the base in the embodiment of the utility model;

[0034] Figure 5 It is a schematic diagram of the assembly of the telescopic component, the shock absorbing component and the wheel assembly in the embodiment of the utility model;

[0035] Figure 6 is a schematic diagram of a shock absorbing assembly in an embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of a limit latch in an embodiment of the utility model;

[0037] Figure 8 It is a cross-sectional view of the limit latch in the embodiment of the utility model;

[0038] Description of reference numerals:

[0039] 1-support assembly; 11-support; 12-base; 13-screw; 14-first pin shaft; 111-pre-installed nut; 112-second bevel tooth; 113-installation groove; 114-first pin hole; 115-limiting pin; 1151-boss; 1152-assembly hole; 1153-second bolt; 121-strip groove; 122-first bevel tooth;

[0040] 2- shock absorbing assembly; 21- air spring; 22- electronically controlled damping shock absorber; 23- buffer bushing; 24- pressure sensor; 25- fork arm; 251- second pin shaft; 252- third pin shaft;

[0041] 3-Wheel assembly;

[0042] 4- telescopic assembly; 41- first axis; 42- second axis; 411- third pin hole; 412- first bolt;

[0043] 5- Ground;

[0044] 6-Pre-settlement ground;

[0045] 7-Lifter;

[0046] 8- Punch. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0048] The car wheel is the only contact point between the vehicle and the road, bearing the weight, power and suspension system of the vehicle. Therefore, the wheel must have good performance to ensure that the vehicle can run stably under various conditions. In order to evaluate the performance of the wheel, it is necessary to conduct various tests on it, and the car wheel impact test is an important part of it. The wheel impact test is designed to simulate the impact of the vehicle under different road conditions.

[0049] Aiming at the problem that the wheel inclination swing radius of the wheel impact test equipment in the prior art is fixed and cannot be adjusted, resulting in the inability to accurately match the wheel impact test results with the vehicle road test results, combined with Figure 1 and 2 The embodiment of the utility model provides a wheel impact test device with an adjustable wheel inclination swing radius, comprising: a support component 1, a shock absorbing component 2 and a telescopic component 4 that can be telescopically arranged.

[0050] The support assembly 1 is used to simulate the subframe of the vehicle chassis, the connection assembly 4 is used to simulate the lower arm of the vehicle chassis, and the shock absorbing assembly 2 is used to simulate the suspension shock absorber of the vehicle chassis.

[0051] In order to simulate the connection between the lower arm and the subframe, the wheel and the shock absorbing assembly 2, the connecting assembly 4 in the embodiment of the utility model needs to be connected to the supporting assembly 1, the wheel assembly 3 and the shock absorbing assembly 2 in an adaptive manner. That is, one end of the connecting assembly 4 is rotatably connected to the supporting assembly 1, the other end of the connecting assembly 4 is assembled with the wheel assembly 3, and the connecting assembly 4 is also rotatably connected to the shock absorbing assembly 2 and relies on the shock absorbing assembly 2 for elastic support.

[0052] Of course, the wheel impact test equipment in the embodiment of the present utility model should also have the following features: Figure 3 The punch 7 in the embodiment can be specifically set in accordance with the punch design in the prior art, thereby achieving impact tests of the wheel assembly 3 at angles of 30°, 45°, 60° and / or 90° or even more.

[0053] In the embodiment of the utility model, in order to realize the adjustable wheel inclination swing radius of the wheel impact test device, the telescopic component 4 is set in a telescopic manner; because the wheel assembly 3 is assembled and fixed with the telescopic component 4, after the length of the telescopic component 4 is telescopically adjusted, the inclination swing radius of the wheel assembly 3 is adjusted.

[0054] Whether the length of the telescopic component 4 needs to be adjusted depends on whether it is necessary to determine in advance which vehicle models the wheel assembly being tested is expected to be installed on, and then determine whether the telescopic component 4 needs to be lengthened or shortened based on the actual wheel camber swing radius of these vehicle models. The adjusted length of the telescopic component 4 is consistent with the wheel camber swing radius during the actual vehicle test.

[0055] In order to realize the rotatable connection between one end of the telescopic assembly 4 and the support assembly 1, a first hinge point is formed between the support assembly 1 and the telescopic assembly 4 to realize the hinge connection between the two, and the first hinge point simulates the hinge point between the subframe and the lower arm of the whole vehicle.

[0056] Similarly, in order to achieve a rotatable connection between the telescopic assembly 4 and the shock absorbing assembly 2, a second hinge point is formed between the telescopic assembly 4 and the shock absorbing assembly 2 to achieve the hinge connection between the two. The second hinge point is to simulate the hinge point between the shock absorber and the lower control arm on the whole vehicle.

[0057] Combination Figure 2 , Figure 3 and Figure 5 In the embodiment of the utility model, in order to realize the telescopic assembly 4 to be telescopic, the telescopic assembly 4 is configured to be composed of two sections, the second shaft 42 and the first shaft 41, and the second shaft 42 and the first shaft 41 are detachably assembled, and the total length of the second shaft 42 and the first shaft 41 after assembly constitutes the length of the telescopic assembly 4. When it is necessary to adjust the total length of the second shaft 42 and the first shaft 41, first release the connection between the second shaft 42 and the first shaft 41, and then adjust the position of the second shaft 42 relative to the first shaft 41 or adjust the position of the first shaft 41 relative to the second shaft 42. After the adjustment is in place, the second shaft 42 and the first shaft 41 are connected and fixed.

[0058] When the first shaft 41 is rotatably connected to the shock absorbing assembly 2, since the position of the shock absorbing assembly 2 cannot be adjusted in the horizontal direction, the first shaft 41 cannot be adjusted relative to the second shaft 42, so the first shaft 41 is used as a fixed shaft and the second shaft 42 is used as a movable shaft; at this time, the length of the telescopic assembly 4 is adjusted by adjusting the position of the second shaft 42 (moving shaft) relative to the first shaft 41 (fixed shaft), but this assembly method has the risk of misaligning the tire section center of the wheel assembly 3 with the center line of the hammer head. For this reason, another assembly method is preferably used in the embodiment of the utility model, namely:

[0059] The second shaft 42 is rotatably connected to the shock absorbing assembly 2. At this time, the first shaft 41 serves as a movable shaft and the second shaft 42 serves as a fixed shaft. Since the second shaft 42 is fixed in the horizontal direction by the shock absorbing assembly 2, the tire section center of the wheel assembly 3 assembled with the second shaft 42 can be kept aligned with the center line of the hammer head. The length of the telescopic assembly 4 can be adjusted by simply adjusting the position of the first shaft 41 (moving shaft) relative to the second shaft 42 (fixed shaft).

[0060] In the embodiment of the utility model, there are many ways to detachably connect the second shaft 42 and the first shaft 41. For example, Figure 5In the embodiment, the second shaft 42 and the first shaft 41 are detachably connected by screw connection. The fixed shafts in the second shaft 42 and the first shaft 41 remain stationary, and the movable shafts in the first shaft 41 and the second shaft 42 are inserted into the fixed shaft or sleeved outside the fixed shaft. Two rows of assembly holes are arranged in the length direction of the fixed shaft (the second shaft 42). After the movable shaft (the first shaft 41) is extended and retracted relative to the fixed shaft, the first bolt 412 is passed through the installation hole on the movable shaft and the corresponding assembly hole on the fixed shaft and then screwed with the nut to achieve fixation. For another example, the connection mode between the second shaft 42 and the first shaft 41 is set to be similar to the connection mode of the extension of the clothes support rod or to be similar to the connection mode of the extension of the umbrella.

[0061] Based on the above description, the length telescopic adjustment of the telescopic component 4 is realized, thereby realizing the adjustment of the wheel inclination swing radius, and the wheel impact test can be performed according to the actual inclination swing radius of the wheel assembly 3, so that the obtained wheel impact test results are closer to the vehicle road test results.

[0062] Considering that the wheel assembly assembled on the actual vehicle has a certain inclination angle in many scenarios, in this embodiment, the end where the telescopic assembly 4 is assembled with the wheel assembly 3 is tilted downward or upward in the horizontal direction, so that the wheel assembly 3 has a certain inclination angle, for example, 1°, 2°, 3° or 4°. The end where the telescopic assembly 4 is assembled with the wheel assembly 3 is tilted downward or upward in the horizontal direction, which is achieved by tilting the position where the telescopic assembly 4 itself is rotatably connected to the support assembly 1 upward or downward as a base point.

[0063] Combination Figure 3 and Figure 4 The position where the telescopic assembly 4 is rotatably connected to the support assembly 1 refers to the position of the aforementioned first hinge point. The support assembly 1 is equipped with a first pin shaft 14, and the telescopic assembly 4 is hinged to the first pin shaft 14 to form a first hinge point. The telescopic assembly 4 can rotate up and down relative to the first pin shaft 14, thereby realizing the inclination adjustment of the wheel assembly 3.

[0064] In order to make the end of the telescopic component 4 assembled with the wheel assembly 3 tilt downward in the horizontal direction, a certain limiting structure can be assembled on the support component 1. By adjusting the limiting structure in contact with the telescopic component 4, the telescopic component 4 can be tilted downward at a certain angle relative to the first hinge point, so that the wheel assembly 3 assembled on the telescopic component 4 has a certain inclination angle.

[0065] For example, Figure 1 , Figure 7 and Figure 8In the embodiment, the limiting structure is a limiting latch 115 detachably mounted on the support 11, and bosses 1151 are respectively protrudingly provided on multiple surfaces of the limiting latch 115, and the bosses 1151 on different surfaces form different angles with the limiting latch 115 itself. When the telescopic assembly 4 needs to be tilted downward at a certain angle, the limiting latch 115 is rotated so that the bosses 1151 with the corresponding angle press down the first shaft 41 of the telescopic assembly 4, thereby causing the telescopic assembly 4 to tilt downward to the required inclination angle.

[0066] Combination Figure 2 and Figure 6 As shown, an assembly hole 1152 is provided on the limit pin 115, and a nut is pre-installed in the assembly hole 1152. The second bolt 1153 is screwed from the top of the support 11 into the pre-installed nut on the limit pin 115 to achieve detachable assembly of the limit pin 115 and the support 11.

[0067] Furthermore, when the support assembly 1 moves with the telescopic assembly 4, if the support assembly 1 keeps moving horizontally, when the first axis 41 is extended (corresponding to Figure 3 When the telescopic assembly 4 is in a tilted state, in order to keep the ground clearance of the wheel assembly 3 unchanged when the telescopic assembly 4 is telescopically adjusted, it is necessary to ensure that the support assembly 1 and the telescopic assembly 4 maintain the same tilt state. That is, when the telescopic assembly 4 is telescoped and tilted at a first tilt angle relative to the horizontal direction, the support assembly 1 is tilted at a second tilt angle relative to the horizontal direction, and the tilt direction of the telescopic assembly 4 is parallel to the tilt direction of the support assembly 1, so as to maintain the distance between the wheel assembly 3 and the ground unchanged.

[0068] In order to realize that the tilting direction of the support assembly 1 is parallel to the tilting direction of the telescopic assembly 4, Figures 2 to 4 The support assembly 1 in the embodiment of the utility model includes: a support 11 rotatably connected to the telescopic assembly 4; when the telescopic assembly 4 is telescoped and the telescopic assembly 4 is tilted at a first tilt angle relative to the horizontal direction, the support 11 is tilted at a second tilt angle relative to the horizontal direction.

[0069] The support 11 being inclined at a second inclination angle relative to the horizontal direction can be achieved by inserting a pad with a corresponding inclination angle under the support 11 .

[0070] Of course, the structure of installing a base 12 below the support 11 in this embodiment can also be adopted to achieve this. Figures 2 to 4The support assembly 1 also includes: a base 12 that can be detachably assembled under the support 11, and the base 12 forms a helical tooth engagement with the support 11; the helical teeth between the base 12 and the support 11 are inclined relative to the horizontal direction at a first predetermined angle that is less than or equal to a second inclination angle.

[0071] When the first predetermined angle and the second inclined angle of the helical teeth are equal, the ground clearance of the wheel assembly 3 can be kept unchanged without adding additional pads; at the same time, it also plays a role in limiting the position of the support 11 to prevent the support 11 from unexpected sliding.

[0072] When the first predetermined angle of the helical gear is smaller than the second inclination angle, a pad which is inclined at the second predetermined angle relative to the horizontal direction can be placed under the base 12, and it is ensured that the sum of the first predetermined angle and the second predetermined angle is equal to the second inclination angle, thereby maintaining the ground clearance of the wheel assembly 3 unchanged.

[0073] For the support 11 in the embodiment of the utility model, no matter which of the above-mentioned methods is used to achieve tilting, it needs to be rotatably connected with the telescopic assembly 4. Figures 2 to 4 In the embodiment of the utility model, a method for realizing the rotatable connection between the support 11 and the telescopic component 4 is provided: the aforementioned first pin shaft 14 is assembled on the support 11, and a mounting groove 113 for the telescopic component 4 to extend into is provided on the support 11, and two opposite groove walls of the mounting groove 113 are respectively provided with a first pin hole 114 and a second pin hole connected to the outer surface of the support 11, and a third pin hole 411 is provided on the first shaft 41 of the telescopic component 4; during installation, the first shaft 41 of the telescopic component 4 is first extended into the mounting groove 113, and then the tail of the first pin shaft 14 is successively passed through the first pin hole 114 on the support 11, the third pin hole 411 on the first shaft 41 and the second pin hole on the support 11, and then the tail pin hole of the first pin shaft 14 is locked with a cotter pin to realize the fixation of the first pin shaft 14, and at the same time realize the rotatable connection of the first shaft 41 of the telescopic component 4 relative to the first pin shaft 14.

[0074] Combined with Figure 2 and Figure 3 From the perspective of the embodiment of the utility model, due to the limitation of the overall structure, when the telescopic component 4 needs to be extended or retracted, the first axis 41 is extended or shortened relative to the second axis 42, and the first axis 41 will drive the support component 1 to move. To this end, it is necessary to set the support component 1 to a state that it can move as the telescopic component 4 is extended or retracted. For example: when the support 11 is assembled on the base 12, the support 11 and the base 12 are assembled in a detachable connection; when the length of the telescopic component 4 needs to be adjusted, the connection between the support 11 and the base 12 is released, and the support 11 and the first axis 41 of the telescopic component 4 are moved together; after moving into place, the support 11 and the base 12 are fixed.

[0075] Combination Figure 2 The embodiment of the utility model provides a method for realizing a detachable connection between the support 11 and the base 12, specifically: a strip groove 121 is provided on the base 12, and the length direction of the strip groove 121 is arranged parallel to the length direction of the telescopic assembly 4; a pre-installed nut 111 is installed on the support assembly 1. When the support 11 is moved into place, the screw 13 passes through the strip groove 121 from the bottom of the base 12 and is screwed to the pre-installed nut 111, so as to realize the detachable connection between the support 11 and the base 12.

[0076] Since the base 12 is placed on the ground 5, the connection between the base 12 and the support 11 causes the bottom surface of the base 12 to be uneven, which affects the wheel inclination angle; it is necessary to ensure that the head of the screw 13 can be embedded in the base 12 so that the bottom surface of the base 12 remains horizontal. To this end, in the embodiment of the utility model, the groove width of the side of the strip groove 121 facing the support 11 is smaller than the groove width of the side of the strip groove 121 away from the support 11, that is, the strip groove 121 in the embodiment of the utility model is composed of two grooves, the width of the first groove on the side of the base 12 facing the ground 5 is greater than the width of the second groove on the side of the base 12 facing the support 11, and it is necessary to ensure that the outer diameter of the head of the screw 13 is between the widths of the first groove and the second groove, so that the head of the screw 13 can be accommodated in the first groove.

[0077] Combination Figures 2 to 4 For the helical teeth between the base 12 and the supporting assembly 1 in the aforementioned content, it includes: a plurality of first helical teeth 122 with a predetermined inclination angle arranged on the base 12 and a plurality of second helical teeth 112 with a predetermined inclination angle arranged on the support 11; part of the first helical teeth 122 is meshed with part of the second helical teeth 112.

[0078] Among them, a plurality of first bevel teeth 122 are arranged side by side, and there is a fixed or non-fixed distance between adjacent first bevel teeth 122; similarly, a plurality of first bevel teeth 122 are also arranged side by side, and there is a fixed or non-fixed distance between adjacent first bevel teeth 122. Optimally, the distance between adjacent first bevel teeth 122 and adjacent second bevel teeth 112 is equal, such as 2 cm. In this way, when the length of the telescopic component 4 is adjusted, the adjusted length of the telescopic component 4 can be confirmed based on the adjusted bevel tooth spacing; for example: when the second bevel tooth 112 on the support 11 and the first bevel tooth 122 on the base 12 move by one grid, it indicates that the length of the telescopic component 4 is extended or shortened by 2 cm.

[0079] The shock absorbing assembly 2 in the embodiment of the utility model can be implemented by using a shock absorbing assembly structure similar to that in the background art, or by using an air spring 21 plus an electrically controlled damping shock absorber 22 .

[0080] Combination Figure 3and Figure 6 When the air spring 21 + electronically controlled damping shock absorber 22 are used to realize the elastic support function, the air spring 21 can be fixed by a lifter 7 fixed on a pre-settled ground 6 (the pre-settled ground 6 is lower than the ground 5 on which the aforementioned base 12 is installed); the air spring 21 is raised or lowered by the lifter 7 to adjust the height of the air spring 21 relative to the ground 5.

[0081] The electric-controlled damping shock absorber 22 is connected to the aforementioned second shaft 42 or the first shaft 41 through the fork arm 25. Specifically, U-shaped slots are respectively provided at both ends of the fork arm 25, and the upper end of the fork arm 25 is rotatably connected to the aforementioned second shaft 42 or the first shaft 41 through the second pin shaft 251 provided in the U-shaped slot to form the aforementioned second hinge point, and the lower end of the fork arm 25 is also rotatably connected to the electric-controlled damping shock absorber 22 through the third pin shaft 252 provided in the U-shaped slot. The connection mode of the second pin shaft 251 with the fork arm 25 and the telescopic assembly 4 refers to the connection mode between the aforementioned first pin shaft 14 and the support 11 and the telescopic assembly 4.

[0082] Combination Figure 5 and Figure 6 The electronically controlled damping shock absorber 22 is built inside the air spring 21, specifically, it is placed on the buffer bushing 23 built into the air spring 21, and a pressure sensor 24 for monitoring the load pressure when applying the preload of the whole vehicle is installed below the buffer bushing 23.

[0083] When it is necessary to adjust the stiffness of the air spring 21 according to the stiffness parameters of the vehicle suspension system, the pressure relief control of the air spring 21 is achieved by manually opening the pressure relief valve on the air spring 21 or by using an electromagnetic pressure relief device to automatically control the pressure relief process of the air spring 21; the air spring 21 is inflated by an external air pump or air compressor.

[0084] When it is necessary to adjust the damping of the electronically controlled damping shock absorber 22 according to the damping parameters of the whole vehicle suspension system, it is achieved by controlling the electronically controlled damping shock absorber 22 .

[0085] Based on the above description, it can be determined that the wheel impact test device with adjustable wheel inclination swing radius in this embodiment can make adaptive parameter adjustments to the support component 1, the shock absorbing component 2 and / or the connecting component 4 according to the actual vehicle chassis parameters when the wheel assembly 3 is assembled on the actual vehicle. Specifically, it can:

[0086] According to the tilt swing radius requirement of the wheel assembly 3, the length of the connecting component 4 is adjusted;

[0087] According to the inclination angle requirement of the wheel assembly 3, the angle of the connecting assembly 4 is adjusted by adjusting the position of the limit pin 115 in the support assembly 1, so as to adjust the inclination angle of the wheel assembly 3;

[0088] According to the shock absorber stiffness requirement of the whole vehicle suspension to be simulated, the stiffness of the shock absorbing assembly 2 is adjusted; and / or

[0089] The damping of the shock absorbing assembly 2 is adjusted according to the damping requirement of the shock absorber of the whole vehicle suspension to be simulated.

[0090] After the parameters of the wheel impact test device are adjusted, the wheel assembly 3 can be installed and the impact test can be carried out according to the preset test rules.

[0091] Before the test, the wheel assembly 3 needs to be inflated in advance, and the inflation pressure is the corresponding pressure specified by the vehicle manufacturer.

[0092] In addition, it is also necessary to ensure that the ambient temperature of the impact test remains within a reasonable temperature range, such as the 10°-30° range specified for conventional impact tests.

[0093] In the embodiment of the utility model, taking the case where the connecting assembly 4 needs to maintain a 1 degree inclination and does not need to adjust the inclination swing radius of the wheel assembly 3 as an example, the specific process of the wheel assembly 3 conducting a 90° impact test according to the preset test rules is introduced. When conducting a 90° impact test, the preset test rules are mainly operated according to the following mode 1 and mode 2.

[0094] Mode 1: With the installation of the limit pin 115, simulate the vehicle rushing over the bumper. The complete operation process of Mode 1 includes:

[0095] S11, first lower the lifter 7 to the lowest position, and control the air spring 21 to be in a pressure relief state.

[0096] S12. Position the 1° boss 1151 on the limit pin 115 downward, and install the limit pin 115 on the support assembly 1, so that the outer surface of the 1° boss 1151 on the limit pin 115 presses down the first shaft 41, and lock the inclination limiting structure 15 on the support assembly 1 through the second bolt 1153.

[0097] S13, installing the wheel assembly 3 on the second shaft 42 of the connecting component 4.

[0098] S14, according to the damping and stiffness of the shock absorber of the whole vehicle suspension, the stiffness of the air spring 22 and the damping of the electronically controlled damping shock absorber 22 are adjusted; then according to the design load of the wheel assembly 3, the air spring 21 is gradually raised upward by adjusting the lifter 7 until the pressure sensor 24 shows that the preload reaches the design load of the wheel assembly 3, and the lifting of the lifter 7 is stopped. The displacement stroke of the lifter 7 at this time is recorded.

[0099] S15 . Adjust the height of the punch 8 according to the impact energy corresponding to the design load of the wheel assembly 3 .

[0100] S16, releasing the punch 8, completing the 90° impact test on the wheel assembly 3 at an inclination angle of 1°.

[0101] Mode 2: Without installing the limit pin 115, the whole vehicle is simulated to pass through a pit. The complete operation process of Mode 2 includes:

[0102] S21, first lower the lifter 7 to the lowest position, control the air spring 21 to be in a pressure relief state, and do not install the limit latch 115.

[0103] S22, then install the wheel assembly 3 on the second shaft 42.

[0104] S23, adjusting the stiffness of the air spring 21 and the damping of the electronically controlled damping shock absorber 22 according to the vehicle suspension parameters; and then lifting the air spring 21 upwards according to the displacement stroke of the lifter 7 recorded in S14 in mode one.

[0105] S24, and then adjust the height of the punch 8 according to the same design load corresponding impact energy as S15 in mode 1.

[0106] S25, releasing the punch 8, completing the 90° impact test on the wheel assembly 3 at an inclination angle of 0°.

[0107] Through the above method, a 90° impact test on the wheel assembly 3 is achieved, and the obtained vehicle impact test result can accurately match the whole vehicle test result.

[0108] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0109] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0110] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements does not include those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0111] The technical solution provided by the utility model is described in detail above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the utility model, and the content of this specification should not be understood as limiting the utility model. At the same time, for those skilled in the art, according to the utility model, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived from them are still within the protection scope of the utility model.

Claims

1. A wheel impact test device with adjustable wheel inclination swing radius, characterized in that: include: A support assembly (1), a shock absorbing assembly (2), and a telescopic assembly (4) for assembling a wheel assembly (3); The telescopic assembly (4) is rotatably connected to the support assembly (1) and the shock absorbing assembly (2), and the telescopic assembly (4) can be extended or shortened according to the wheel inclination swing radius when the wheel assembly (3) is assembled on a real vehicle.

2. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 1, characterized in that: The telescopic component (4) can be tilted upward or downward relative to the horizontal direction using the position where it is rotatably connected to the support component (1) as a base point to meet the inclination angle requirement of the wheel assembly (3).

3. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 1, characterized in that: When the telescopic assembly (4) is telescoped and the telescopic assembly (4) is tilted at a first tilt angle relative to the horizontal direction, the support assembly (1) is tilted at a second tilt angle relative to the horizontal direction, and the tilt direction of the telescopic assembly (4) is parallel to the tilt direction of the support assembly (1), so as to maintain the distance between the wheel assembly (3) and the ground unchanged.

4. The wheel impact test device with adjustable wheel inclination swing radius according to any one of claims 1 to 3, characterized in that: The telescopic assembly (4) comprises: A first shaft (41) rotatably connected to the support assembly (1); a second shaft (42), one end of the second shaft (42) being movably inserted into the first shaft (41) or movably sleeved on the first shaft (41), and the other end of the second shaft (42) being used for assembling the wheel assembly (3); The first shaft (41) and the second shaft (42) are detachably connected; The first shaft (41) or the second shaft (42) is rotatably connected to the shock absorbing assembly (2).

5. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 3, characterized in that: The support assembly (1) comprises: A support (11) rotatably connected to the telescopic assembly (4); When the telescopic assembly (4) is telescoped and the telescopic assembly (4) is tilted at a first tilt angle relative to the horizontal direction, the support (11) is tilted at a second tilt angle relative to the horizontal direction.

6. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 5, characterized in that: The support assembly (1) further comprises: A base (12) is detachably assembled below the support (11), and the base (12) and the support (11) form an oblique tooth meshing. The oblique teeth between the base (12) and the support (11) are inclined relative to the horizontal direction at a first predetermined angle that is less than or equal to the second inclination angle.

7. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 6, characterized in that: When the first predetermined angle is smaller than the second inclination angle, a pad is provided under the base (12), the pad is inclined at a second predetermined angle relative to the horizontal direction, and the sum of the first predetermined angle and the second predetermined angle is equal to the second inclination angle.

8. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 6, characterized in that: The base (12) is provided with a strip groove (121), and the support (11) is installed with a pre-installed nut (111); The support (11) and the base (12) are detachably assembled by passing a screw (13) from the bottom of the base (12) through the strip-shaped groove (121) and then being screwed to the pre-installed nut (111).

9. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 8, characterized in that: The groove width of the strip groove (121) on the side facing the support (11) is smaller than the groove width of the strip groove (121) on the side away from the support (11); The head of the screw (13) is accommodated in the area of ​​the strip-shaped groove (121) where the groove width is larger, so that the lower surface of the base (12) fits on the component on which it is placed.

10. The wheel impact test device with adjustable wheel inclination angle swing radius according to claim 1, characterized in that: The wheel impact test device with adjustable wheel inclination swing radius is used to perform 30°, 45°, 60° and / or 90° impact tests on the wheel assembly (3).

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