Multi-shaft drum test bed vehicle attitude early warning device

Abstract

A vehicle posture early warning device for a multi-shaft drum test bed relates to the technical field of motor vehicle detection equipment, the test bed comprises a frame body and a vehicle passing plate on the upper side of the frame body, the vehicle passing plate is provided with a plurality of mounting ports, and drum bodies are mounted in the mounting ports; the vehicle posture early warning device comprises detection modules which are arranged corresponding to the two axial ends of each drum body and can detect the positions of tires of the vehicle, and a processing module, an alarm module and a displayer which are electrically connected with the detection modules. The detection module comprises a distance sensor and a protection mechanism which is in transmission connection with the distance sensor and can drive the distance sensor to vertically penetrate through the vehicle passing plate, and the protection mechanism is arranged on the side, close to the rotary drum body, of the distance sensor and can drive the distance sensor to move to the lower side of the vehicle passing plate. According to the device, non-contact early warning with tires can be achieved, a driver in a vehicle can adjust the posture of the vehicle through the displayer, the distance sensor can be protected through the protection mechanism, and the test precision, efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicle detection equipment, and in particular to a vehicle posture warning device for a multi-axis drum test bench. Background Art

[0002] The automobile chassis dynamometer is an indoor bench test equipment that uses rollers to simulate the road surface to test the vehicle's dynamics, multi-condition emission indicators, fuel indicators and other performance. During the test, in order to improve the test accuracy, the tester needs to ensure that the vehicle and the chassis dynamometer are aligned to accurately simulate road resistance.

[0003] There are two main methods of centering at present. The first method is to rely on at least two test personnel to cooperate with each other, one of whom drives the vehicle and the other observes the vehicle from the outside of the vehicle, and then the centering is achieved through cooperation. However, the accuracy and efficiency of this method are relatively low. The second method is to set hardware at both ends of the roller to limit the displacement of the automobile tire on the roller, such as the automobile chassis dynamometer and its measurement control method with application number CN200910108305.3. The stop roller is used to position the automobile tire on the roller to prevent the tire from deflecting or sliding out of the roller along the axial direction of the roller when the roller speed is high. However, since the stop roller limit needs to come into contact with the tire, the test result is affected, and on the one hand, the tire may be damaged. On the other hand, for heavy vehicles, the driver in the vehicle cannot promptly detect the contact between the stop roller and the tire, especially when the roller is just started, the tire will have a large jump. At this time, the stop roller may have been crushed by the heavy vehicle and lost its limiting effect, and continuing the test will have a great safety hazard. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle posture warning device for a multi-axis drum test bench, which realizes non-contact warning with automobile tires by setting a distance sensor, and alarms when the tire offset distance exceeds a preset value; at the same time, the offset data can be displayed through a display, and the driver inside the vehicle adjusts the vehicle posture through the display content of the display to keep the vehicle centered on the drum; in addition, a protective mechanism is also provided to protect the distance sensor when the tire is close to the distance sensor, thereby improving the test accuracy, test efficiency and safety.

[0005] The technical solution of the present invention is as follows:

[0006] A multi-axis drum test bench vehicle posture warning device, wherein the test bench includes a frame and a vehicle passing plate on its upper side, the vehicle passing plate is provided with a plurality of mounting openings, a drum body is mounted in the mounting openings, during the test, each tire of the vehicle is located on the drum body at a corresponding position, and the drum body simulates a road surface, thereby testing the performance of the vehicle;

[0007] The vehicle posture warning device includes a detection module which is arranged at both ends of the axial direction of each drum body and can detect the tire position of the vehicle, and a processing module, an alarm module and a display which are electrically connected to the detection module;

[0008] The detection module includes a distance sensor and a protection mechanism which is transmission-connected with the distance sensor and can drive the distance sensor to vertically pass through the vehicle plate, and the protection mechanism is arranged on a side of the distance sensor close to the drum body;

[0009] During use, when the tire position changes, the value detected by the distance sensor changes accordingly. The driver in the vehicle can adjust the position of the vehicle through the data displayed on the display to keep the vehicle centered on the drum body, thereby improving the test accuracy and improving the test efficiency compared to the method of using two testers to cooperate with each other; and the alarm module can also be set to alarm when the distance sensor detects that the tire deviation distance exceeds the preset distance value, thereby achieving non-contact warning with the vehicle tire and improving the safety of the test;

[0010] For example, when any distance sensor detects that the distance between the tire side and the inner side of the drum body is less than 10 mm, the drive alarm module will issue an audible and visual alarm;

[0011] The protection mechanism is used to protect the distance sensor to prevent the tire from crushing the distance sensor;

[0012] Furthermore, the protective mechanism includes a fixed seat with an opening facing upward and a first sliding member with an inner side thereof vertically slidingly arranged and an opening facing downward, wherein the outer wall of the first sliding member is vertically slidably matched with the inner wall of the fixed seat, a hollow support platform is vertically arranged in the middle of the fixed seat, a sliding rod is vertically slidably arranged in the support platform and is vertically elastically connected to the inner side of the first sliding member, and the moving directions of the sliding rod and the first sliding member are arranged to be opposite; the lower end of the sliding rod passes through the fixed seat and is transmission-connected to the distance sensor through a connecting rod assembly, and the connecting rod assembly is arranged to be able to drive the distance sensor to move in the opposite direction when the sliding rod moves vertically.

[0013] When in use, since the protective mechanism is arranged on the side of the distance sensor close to the drum body, when the tire of the vehicle deviates from the drum body and approaches the distance sensor, the tire will first contact the first sliding member of the protective mechanism. At this time, the first sliding member moves downward due to the tire pressure, and the sliding rod moves upward, and then the connecting rod assembly drives the distance sensor to move downward, and the distance sensor is arranged to be able to move completely downward to the lower side of the vehicle passing plate when the tire is pressed down on the first sliding member, thereby preventing the tire from damaging the distance sensor when moving close to the distance sensor.

[0014] It can be understood that the vehicle posture warning device also includes a detection switch electrically connected to the processing module. When the processing module receives a signal that the detection switch detects the downward movement of the first sliding member, the alarm module is driven to sound an alarm. The test personnel can quickly control the vehicle and the drum body to shut down or perform other processing according to the alarm to avoid other safety problems.

[0015] Furthermore, a first sliding groove is horizontally provided on the support platform, and an inclined second sliding groove is provided in the middle of the sliding rod. A second sliding member is horizontally slidably provided in the first sliding groove and passes through the second sliding groove of the sliding rod. The lateral sides of the second sliding member slide with the inner side of the first sliding member, and are configured to be able to slide horizontally along the first sliding groove under the push of the first sliding member, thereby driving the sliding rod to move in the opposite direction of the moving direction of the first sliding member.

[0016] The second sliding member, the sliding rod and the first sliding member respectively form an inclined plane transmission structure, and the inclination directions of the two inclined plane transmission structures are opposite.

[0017] Specifically, the second sliding member includes a first push block that is arranged obliquely and second push blocks at both ends thereof. The first push block is slidably matched with the second slide groove, and its length is greater than the length of the second slide groove. The upper and lower sides of the two second push blocks have planes that are slidably matched with the first slide groove, and the sides facing away from each other also have an inclined surface that forms an inclined surface with the inner side surface of the lower part of the first sliding member, and the inclined surface is opposite to the inclination direction of the first push block.

[0018] To facilitate the installation of the second sliding member, the first push block includes two detachably connected inclined blocks, and the two second push blocks are respectively arranged at different ends of the two inclined blocks, and the push block and the corresponding inclined blocks are integrally manufactured.

[0019] Furthermore, the two oblique blocks are arranged to be connected and fixed in the second slide groove by screws after being respectively inserted into the second slide groove, and the sides that fit each other are designed to be interlocked, and the four surfaces formed after the two oblique blocks are connected together are four planes that slide with the second slide groove, and interconnected mounting holes are also provided on the fixed seat, the first sliding member and the sliding rod, and the mounting holes are arranged to allow tools to be inserted from the outside to tighten the screws to disassemble and assemble the two oblique blocks.

[0020] Furthermore, the upper end of the sliding rod is provided with a boss abutting against the upper side of the support platform, and the boss is an inverted "T"-shaped structure, and its upper end is elastically connected to the first sliding member through a spring to facilitate compression and reset of the spring between the boss and the first sliding member.

[0021] As a preferred implementation, the upper outer peripheral surface of the first sliding member is a tapered structure that is narrow at the top and wide at the bottom, so that when the tire deviates from different angles, the inclined surface of the tapered surface guides the tire to contact the first sliding member. The top outer side surface of the first sliding member is set as a plane to provide a uniform force-bearing surface, ensuring that the pressure distribution is balanced when the tire is fully pressed on the first sliding member, avoiding local stress concentration that causes the first sliding member to tilt or get stuck, and the top inner side surface of the first sliding member is provided with a connecting column corresponding to the boss to facilitate the installation of the spring.

[0022] As a preferred implementation, the connecting rod assembly includes a support rod disposed at the lower side of the distance sensor and vertically slidably connected to the frame, and a swing rod hingedly connected between the support rod and the sliding rod.

[0023] A second fixed rod fixedly connected to the frame body is rotatably arranged in the middle of the swing rod, a fourth sliding groove is transversely arranged at one end of the swing rod hinged with the sliding rod, and a hinged member hingedly connected to the sliding rod is slidably arranged in the fourth sliding groove.

[0024] A third sliding groove is vertically provided on the support rod, and a first fixing rod passing through the third sliding groove and slidingly matched with the third sliding groove is fixedly connected to the frame body.

[0025] A U-shaped slot with an opening facing downward is provided in the middle of the lower end of the support rod and the sliding rod. The swing rod is hinged with the support rod and the sliding rod in the U-shaped slot. The U-shaped slot can prevent the swing rod from swinging along the axial direction of the first fixed rod, thereby improving stability.

[0026] The drum body of the test bench includes a single drum body or a double drum body. As an implementation of the vehicle posture warning device, the distance sensor is arranged to be located in the same plane as the first sliding member, and the distance sensor protrudes from the upper side of the first sliding member, and is arranged horizontally to point to the tire on the single drum body or the double drum body, so as to protect the distance sensor when the rotation speed of the drum body is relatively large and the tire deviates a large distance at a relatively fast speed during the vehicle test, and especially when the drum body is just started and the tire has a large bounce and slides out of the drum body, and the distance sensor cannot respond quickly, and the driver cannot obtain the displacement distance of the tire in time. Preferably, the distance sensor is arranged horizontally to point to the lowest point of the tire on the single drum body or the double drum body.

[0027] The drum body of the test bench includes a single drum body or a double drum body. In another implementation of the vehicle posture warning device, the distance sensor is located on the side away from the vehicle's approach direction relative to the protective mechanism, and is tilted toward the middle position of the tire on the single drum body or the double drum body. This arrangement can not only protect the distance sensor during the test, but also protect the distance sensor when the vehicle enters the drum body of the test bench. Preferably, the protective mechanism and the tires on the single drum body or the double drum body are located in the same plane, and the angle between the protective mechanism and the tilted direction of the distance sensor is 25°-40°.

[0028] The beneficial effects achieved by the present invention compared with the prior art are:

[0029] 1. The distance sensors arranged at both ends of the axial direction of the drum body can detect the offset distance of the tire when the vehicle deviates, and display the offset data on the display, so that the driver in the car can adjust the vehicle posture to keep the vehicle centered on the drum body, thereby improving the test accuracy and improving the test efficiency compared with the method of using two testers to cooperate with each other;

[0030] 2. Through the alarm module electrically connected to the distance sensor, an alarm is sounded when the distance sensor detects that the tire deviation distance exceeds the preset distance value, thereby realizing non-contact warning with the vehicle tire and improving the safety of the test;

[0031] 3. By arranging a protection mechanism on the side of the distance sensor close to the drum body, when the tire approaches the distance sensor, the protection mechanism drives the distance sensor to move down to the lower side of the vehicle plate, thereby protecting the distance sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the attached picture:

[0033] Figure 1 This is a schematic diagram of the installation position of a vehicle posture warning device of a multi-axis drum test bench in Example 1 of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure of the vehicle plate and the protective mechanism cut from AA in FIG. 1 (the distance sensor and the upper part of the first sliding member extend out of the upper side of the vehicle plate);

[0035] Figure 3 for Figure 1 A schematic diagram of the structure of the vehicle plate and the protective mechanism cut from AA in FIG. 1 (the distance sensor and the upper part of the first sliding member extend into the lower side of the vehicle plate);

[0036] Figure 4 for Figure 2 An enlarged structural diagram of the middle protection mechanism;

[0037] Figure 5 is a schematic structural diagram of a second sliding member;

[0038] Figure 6 This is a schematic diagram of the installation position of a vehicle posture warning device of a multi-axis drum test bench in Example 2 of the present invention;

[0039] The components represented by the reference numerals in the figure are:

[0040] 1. Passing plate; 2. Drum body; 21. Single drum body; 22. Double drum body; 3. Detection module; 31. Distance sensor; 32. Fixed seat; 321. Annular cylinder; 322. Support platform; 3221. First slide groove; 33. First sliding member; 34. Spring; 35. Sliding rod; 351. Second slide groove; 352. Boss; 36. Second sliding member; 361. First push block; 3611. Oblique block; 362. Second push block; 3621. Inclined surface; 363. Screw; 37. Connecting rod assembly; 371. Support rod; 3711. Third slide groove; 372. First fixed rod; 373. Rocker arm; 3731. Fourth slide groove; 374. Second fixed rod; 4. Tire. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0042] Example

[0043] Combination Figure 1 In this embodiment, a vehicle posture warning device of a multi-axis drum test bench is provided, wherein the test bench includes a frame and a vehicle passing plate 1 on its upper side, a plurality of mounting openings are provided on the vehicle passing plate 1, and a drum body 2 is installed in the mounting openings. During the test, each tire 4 of the vehicle is located on the drum body 2 at a corresponding position, and the drum body 2 simulates a road surface, thereby testing the performance of the vehicle.

[0044] The vehicle posture warning device comprises a detection module 3 which is arranged at both axial ends of each drum body 2 and can detect the position of the tire 4 of the vehicle, and a processing module, an alarm module and a display which are electrically connected to the detection module 3 .

[0045] The detection module 3 includes a distance sensor 31 and a protection mechanism which is transmission-connected with the distance sensor 31 and can drive the distance sensor 31 to vertically pass through the vehicle plate 1 , and the protection mechanism is arranged on a side of the distance sensor 31 close to the drum body 2 , wherein the distance sensor 31 is a non-contact distance sensor 31 .

[0046] During use, when the position of the tire 4 changes, the value detected by the distance sensor 31 changes accordingly. The driver in the vehicle can adjust the position of the vehicle through the data displayed on the display to keep the vehicle centered on the drum body 2, thereby improving the test accuracy and improving the efficiency of the test compared to the method of two testers cooperating with each other; and the alarm module can also be set to alarm when the distance sensor 31 detects that the tire 4 deviates by a distance exceeding a preset distance value, thereby achieving non-contact warning with the vehicle's tire 4 and improving the safety of the test.

[0047] For example, the alarm mode in this embodiment is set to drive the alarm module to issue an audible and visual alarm when any distance sensor 31 detects that the distance between the side of the tire 4 and the inner side of the drum body 2 is less than 10 mm.

[0048] The protection mechanism of this embodiment is used to protect the distance sensor 31 to prevent the tire 4 from crushing the distance sensor 31 .

[0049] Combination Figure 4 The protective mechanism includes a fixed seat 32 with an opening facing upward and a first sliding member 33 with an opening facing downward and a vertically sliding arrangement inside the fixed seat 32, wherein the outer wall of the first sliding member 33 vertically slides with the inner wall of the fixed seat 32, the fixed seat 32 includes a support plate connected to the frame, and an annular cylinder 321 and a hollow support platform 322 vertically arranged on the support plate, and the support platform 322 is located in the middle of the annular cylinder 321, and a sliding rod 35 vertically slidably connected to the inner side of the first sliding member 33 is also vertically slidably arranged inside the support platform 322, and the moving direction of the sliding rod 35 and the first sliding member 33 is set opposite.

[0050] Specifically, a first slide groove 3221 is also horizontally provided on the support platform 322, and an inclined second slide groove 351 is provided in the middle of the sliding rod 35. A second sliding member 36 is horizontally slidably provided in the first slide groove 3221 and passes through the second slide groove 351 of the sliding rod 35. The lateral sides of the second sliding member 36 are slidably matched with the inner side of the first sliding member 33, and are configured to be able to slide horizontally along the first slide groove 3221 under the push of the first sliding member 33, thereby driving the sliding rod 35 to move in the opposite direction of the moving direction of the first sliding member 33.

[0051] Combination Figure 2 and Figure 3 The lower end of the sliding rod 35 passes through the fixing seat 32 and is connected to the distance sensor 31 through the connecting rod assembly 37, and the connecting rod assembly 37 is configured to drive the distance sensor 31 to move in the opposite direction when the sliding rod 35 moves vertically.

[0052] When in use, since the protective mechanism is arranged on the side of the distance sensor 31 close to the drum body 2, when the tire 4 of the vehicle deviates from the drum body 2 and approaches the distance sensor 31, the tire 4 will first contact the first sliding member 33 of the protective mechanism. At this time, the first sliding member 33 moves downward due to the pressure of the tire 4, and then the sliding rod 35 moves upward through the cooperation of the second sliding groove 351 and the second sliding member 36, and finally the distance sensor 31 is driven to move downward through the connecting rod assembly 37, so that when the first sliding member 33 moves downward due to the pressure of the tire 4, the distance sensor 31 also moves downward, and the distance sensor 31 is configured to be able to move completely downward to the lower side of the vehicle plate 1 when the tire 4 is pressed down on the first sliding member 33, thereby preventing the tire 4 from sliding off the drum body 2 and damaging the distance sensor 31.

[0053] It can be understood that the vehicle posture warning device also includes a detection switch electrically connected to the processing module. When the processing module receives a signal from the detection switch that the first sliding member 33 has moved downward, the alarm module is driven to sound an alarm. The test personnel can quickly control the vehicle and the drum body 2 to shut down or perform other processing based on the alarm to avoid other safety problems.

[0054] The detection switch is a photoelectric switch or a proximity switch. In this embodiment, the detection switch is preferably a photoelectric switch arranged on the annular cylinder 321. A detection hole is opened in the middle outer ring of the first sliding member 33 corresponding to the photoelectric switch.

[0055] Combination Figure 2 and Figure 3 The connecting rod assembly 37 includes a support rod 371 which is arranged on the lower side of the distance sensor 31 and is vertically slidably connected to the frame, and a rocker rod 373 which is hingedly connected between the support rod 371 and the sliding rod 35; a second fixed rod 374 which is fixedly connected to the frame and is rotatable in the middle part of the rocker rod 373, and a fourth sliding groove 3731 is also horizontally opened at one end of the rocker rod 373 which is hinged to the sliding rod 35, and a hinged part which is hingedly connected to the sliding rod 35 is slidably provided in the fourth sliding groove 3731.

[0056] A third sliding groove 3711 is vertically formed on the support rod 371 , and a first fixing rod 372 passing through the third sliding groove 3711 and slidingly matched with the third sliding groove 3711 is fixedly connected to the frame body.

[0057] A U-shaped slot with an opening facing downward is provided in the middle of the lower end of the support rod 371 and the sliding rod 35, and the swing rod 373 is hinged with the support rod 371 and the sliding rod 35 in the U-shaped slot. The U-shaped slot can prevent the swing rod 373 from swinging along the axial direction of the first fixed rod 372, thereby improving stability.

[0058] As needed, in a preferred embodiment, a protective shell is further provided on the outside of the distance sensor 31, and a detection gap is provided on the side of the protective shell close to the drum body 2, and the support rod 371 is connected to the lower side of the protective shell. The distance sensor 31 can be removably installed in the protective shell to further protect the distance sensor 31.

[0059] The upper end of the sliding rod 35 is provided with a boss 352 that abuts against the upper side of the support platform 322, and the boss 352 is an inverted "T" shape structure. Its upper end is elastically connected to the first sliding member 33 through a spring 34 to facilitate compression and reset of the spring 34 between the boss 352 and the first sliding member 33.

[0060] When the first sliding member 33 moves downward, the contact area between the first sliding member 33 and the inner wall of the fixing seat 32 gradually increases, and in the process of compression of the spring 34 , a progressive damping effect can be provided to avoid vibration of the device due to sudden release of the spring 34 during resetting.

[0061] Combination Figure 2 When the tire 4 presses down the first sliding member 33 to move downward, since the upper end of the sliding rod 35 abuts against the upper side of the support platform 322, the spring 34 is in a compressed state. At the same time, the inclined surfaces 3621 on the two inner sides of the lower part of the first sliding member 33 slide in cooperation with the inclined surfaces 3621 of the second push block 362, and in the process of moving downward, the second sliding member 36 is pushed to slide horizontally to the left along the first sliding groove 3221, thereby driving the sliding rod 35 to move upward along the support platform 322, and then driving the distance sensor 31 to move toward the lower side of the vehicle plate 1 through the connecting rod assembly 37.

[0062] Combination Figure 3 When the tire 4 leaves the first sliding member 33, the spring 34 in the compressed state is reset under the action of the elastic force, and the first sliding member 33 and the second sliding member 36 both move upward to their initial positions, that is, the first sliding member 33 and the distance sensor 31 extend from the upper side of the vehicle plate 1.

[0063] Combination Figure 2 and Figure 3 The upper outer peripheral surface of the first sliding member 33 is a tapered structure that is narrow at the top and wide at the bottom, so that when the tire 4 deviates from different angles (such as deflecting left or right or sliding obliquely), the tire 4 is guided to contact the first sliding member 33 through the inclined surface 3621 of the tapered surface. Specifically, when the tire 4 approaches in a non-vertical direction, the inclined side wall of the tapered surface can convert the lateral component of the tire 4 into a downward force on the first sliding member 33, ensuring that the first sliding member 33 moves downward smoothly, so that when the tire 4 approaches the distance sensor 31 from different angles, it can drive the distance sensor 31 to move toward the lower side of the vehicle plate 1.

[0064] Combination Figure 2 and Figure 3The top outer side surface of the first sliding member 33 is a plane to provide a uniform force-bearing surface, ensuring that the pressure distribution is balanced when the tire 4 is fully pressed on the first sliding member 33, avoiding local stress concentration that causes the first sliding member 33 to tilt or get stuck, and a connecting column is provided on the top inner side surface of the first sliding member 33 corresponding to the boss 352 to facilitate the installation of the spring 34.

[0065] Combination Figure 4 The second sliding member 36, the sliding rod 35 and the first sliding member 33 respectively form an inclined surface 3621 transmission structure, and the inclination directions of the two inclined surface 3621 transmission structures are opposite.

[0066] Specifically, the second sliding member 36 includes an inclined first push block 361 and second push blocks 362 at both ends thereof, the first push block 361 slidably cooperates with the second slide groove 351, and its length is greater than the length of the second slide groove 351, the two second push blocks 362 have planes slidably cooperated with the first slide groove 3221 on the upper and lower sides, and the side away from each other also has an inclined surface 3621 that cooperates with the inclined surface 3621 formed by the inner side surface of the lower part of the first sliding member 33, and the inclined surface 3621 is opposite to the inclination direction of the first push block 361; and in the present embodiment, as a preference, the inclination angle of the first push block 361 relative to the horizontal plane is 30°, and the angle between the inclined surface 3621 and the first push block 361 is preferably 90°.

[0067] The two second push blocks 362 also have a vertical limiting plane on one side close to the sliding rod 35, and the limiting planes of the two second push blocks 362 are respectively 90° to the horizontal planes of the upper and lower sides of the two second push blocks 362. When the two second push blocks 362 slide to the limiting plane on the side of the sliding direction and abut against the sliding rod 35, they stop sliding.

[0068] To facilitate installation of the second sliding member 36 , the first push block 361 includes two detachably connected inclined blocks 3611 , and the two second push blocks 362 are respectively disposed at different ends of the two inclined blocks 3611 , and the push block and the corresponding inclined blocks 3611 are integrally manufactured.

[0069] Combination Figure 5 During installation, the two inclined blocks 3611 are inserted from both sides of the second slide groove 351 and are connected and fixed in the second slide groove 351 by screws 363. The sides that fit each other are designed to fit each other, and the four surfaces formed after the two inclined blocks 3611 are connected together are four planes that slide with the second slide groove 351. In addition, the fixed seat 32, the first sliding member 33 and the sliding rod 35 are also provided with interconnected mounting holes, and the mounting holes are configured to allow tools to extend from the outside into the second slide groove 351 to screw the screws 363 to disassemble and assemble the two inclined blocks 3611.

[0070] Preferably, the screw 363 is a countersunk screw 363 with a conical head and a slotted groove. The conical head can be flush with the surface of the bevel block 3611, thereby ensuring the flatness of the surface of the bevel block 3611. The slotted groove on the top of the screw 363 is convenient for tightening and disassembly operations using a slotted screwdriver, and the slotted groove is easier to align.

[0071] The drum body 2 of the test bench includes a single drum body 21 or a double drum body 22, combined with Figure 1 In some embodiments, the distance sensor 31 is arranged to be located in the same plane as the first sliding member 33, and the distance sensor 31 protrudes from the upper side of the first sliding member 33, and is arranged horizontally to point to the tire 4 on the single drum body 21 or the double drum body 22, so as to protect the distance sensor 31 when the rotation speed of the drum body 2 is relatively high and the tire 4 deviates a relatively large distance at a relatively fast speed during the vehicle test, and especially when the drum body 2 is just started and the tire 4 has a relatively large bounce and slides out of the drum body 2, and the distance sensor 31 cannot respond quickly, and the driver cannot obtain the displacement distance of the tire 4 in time. Preferably, the distance sensor 31 is arranged horizontally to point to the lowest point of the tire 4 on the single drum body 21 or the double drum body 22.

[0072] Combination Figure 6 In other embodiments, the distance sensor 31 is located on the side away from the vehicle's approach direction relative to the protective mechanism, and is tilted toward the middle position of the tire 4 on the single drum body 21 or the double drum body 22. This arrangement can not only protect the distance sensor 31 during the test, but also protect the distance sensor 31 when the vehicle enters the drum body 2 of the test bench. Preferably, the protective mechanism and the tire 4 on the single drum body 21 or the double drum body 22 are located in the same plane, and the angle between the protective mechanism and the tilted direction of the distance sensor 31 is 25°-40°.

Claims

1. A vehicle posture warning device for a multi-axis drum test bench, the test bench comprising a frame and a vehicle passing plate (1) on its upper side, the vehicle passing plate (1) being provided with a plurality of mounting openings, and a drum body (2) being mounted in the mounting openings, characterized in that: The vehicle posture warning device comprises a detection module (3) which is arranged at the axial ends of each of the drum bodies (2) and is capable of detecting the position of the tires (4) of the vehicle, and a processing module, an alarm module and a display which are electrically connected to the detection module (3); The detection module (3) comprises a distance sensor (31) and a protection mechanism which is transmission-connected to the distance sensor (31) and can drive the distance sensor (31) to vertically pass through the vehicle plate (1), and the protection mechanism is arranged on a side of the distance sensor (31) close to the drum body (2); the protection mechanism comprises a fixed seat (32) with an opening facing upward and a first sliding member (33) which is vertically slidably arranged inside the fixed seat (32) and has an opening facing downward, a hollow support platform (322) is vertically arranged in the middle of the fixed seat (32), a sliding rod (35) which is vertically elastically connected to the inner side of the first sliding member (33) is vertically slidably arranged inside the support platform (322), and the moving directions of the sliding rod (35) and the first sliding member (33) are arranged to be opposite; the lower end of the sliding rod (35) passes through the fixed seat (32) and is transmission-connected to the distance sensor (31) through a connecting rod assembly (37), and the connecting rod assembly (37) is arranged to be able to drive the distance sensor (31) to move in the opposite direction when the sliding rod (35) moves vertically.

2. A multi-axis drum test bench vehicle posture warning device as claimed in claim 1, characterized in that: The support platform (322) is laterally provided with a first slide groove (3221), and the middle part of the sliding rod (35) is provided with an inclined second slide groove (351), and a second sliding member (36) is laterally slidably provided in the first slide groove (3221) and passes through the second slide groove (351) of the sliding rod (35), and the lateral sides of the second sliding member (36) are slidably matched with the inner side of the first sliding member (33), and are configured to be able to slide laterally along the first slide groove (3221) under the push of the first sliding member (33), thereby being able to drive the sliding rod (35) to move in the opposite direction of the moving direction of the first sliding member (33).

3. A multi-axis drum test bench vehicle posture warning device as claimed in claim 2, characterized in that: The second sliding member (36) forms an inclined plane transmission structure with the sliding rod (35) and the first sliding member (33) respectively, and the inclination directions of the two inclined plane transmission structures are opposite.

4. A multi-axis drum test bench vehicle posture warning device as claimed in claim 3, characterized in that: The second sliding member (36) comprises a first push block (361) which is arranged obliquely and second push blocks (362) at both ends thereof; The first push block (361) is slidably matched with the second slide groove (351), and its length is greater than the length of the second slide groove (351). The upper and lower sides of the second push blocks (362) have planes slidably matched with the first slide groove (3221), and the sides facing away from each other also have an inclined surface (3621) that forms an inclined surface with the inner side surface of the lower part of the first sliding member (33), and the inclined surface (3621) is opposite to the inclination direction of the first push block (361).

5. A multi-axis drum test bench vehicle posture warning device as claimed in claim 4, characterized in that: The first pushing block (361) comprises two detachably connected inclined blocks (3611), and the two second pushing blocks (362) are respectively arranged at different ends of the two inclined blocks (3611).

6. A multi-axis drum test bench vehicle posture warning device as claimed in claim 4, characterized in that: The upper end of the sliding rod (35) is provided with a boss (352) that abuts against the upper side of the support platform (322); The boss (352) is in an inverted "T"-shaped structure, and its upper end is elastically connected to the first sliding member (33) via a spring (34).

7. The multi-axis drum test bench vehicle posture warning device according to claim 1, characterized in that: The connecting rod assembly (37) comprises a support rod (371) disposed at the lower side of the distance sensor (31) and vertically slidably connected to the frame, and a swing rod (373) hingedly connected between the support rod (371) and the sliding rod (35); A second fixed rod (374) fixedly connected to the frame body is rotatably provided in the middle of the swing rod (373), and a fourth sliding groove (3731) is transversely provided at one end of the swing rod (373) hinged to the sliding rod (35), and a hinged member hingedly connected to the sliding rod (35) is slidably provided in the fourth sliding groove (3731).

8. The multi-axis drum test bench vehicle posture warning device according to claim 1, characterized in that: The upper outer peripheral surface of the first sliding member (33) is in a conical structure that is narrow at the top and wide at the bottom, and the top outer side surface of the first sliding member (33) is a plane.

9. A vehicle posture warning device for a multi-axis drum test bench as claimed in any one of claims 1 to 8, characterized in that: The distance sensor (31) is located in the same plane as the first sliding member (33), protrudes from the upper side of the first sliding member (33), and is arranged horizontally pointing to the tire (4) on the drum body (2).

10. A vehicle posture warning device for a multi-axis drum test bench as claimed in any one of claims 1 to 8, characterized in that: The distance sensor (31) is located on a side away from the vehicle's approaching direction relative to the protection mechanism, and is tilted toward the middle of the tire (4) on the drum body (2).

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