Testing device for automobile smoothness pulse input test and use method

Abstract

The invention belongs to the technical field of vehicle tests, and discloses a test device for an automobile smoothness pulse input test and a use method, the test device comprises two groups of photoelectric control lifting bump assemblies, and the lifting bump assemblies of the two groups of photoelectric control lifting bump assemblies are fixed underground at intervals corresponding to the positions of left and right wheels of an automobile. The two groups of lifting bump assemblies are synchronously lifted and stopped, the top surfaces of the lifting bump assemblies are flush, the photoelectric control assemblies are respectively arranged in the ground of a test field and on an automobile frame, and the photoelectric control assemblies control the lifting bump assemblies to be lifted and stopped through electric signals so as to excite front wheels and / or rear wheels of an automobile and automatically reset bumps. The two groups of lifting bump assemblies are fixed under the ground, so that the bumps do not displace, and the test accuracy is ensured; the height of the bump protruding out of the ground is adjustable, more vehicle types are used, and the test cost is saved; the photoelectric control assembly controls the bump to automatically lift and stop, so that the front / rear wheels can be independently excited, and the test accuracy is ensured; the automatic reset of the control bump is time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and in particular to a testing device and a use method for a pulse input test of automobile ride comfort. Background Art

[0002] In recent years, with the rapid growth of the number of cars, people pay more and more attention to the ride comfort of cars during driving. When the car is driving, the unevenness of the road surface and the rotating parts such as the engine, transmission system and wheels excite the car vibration and noise, which will affect the ride comfort, work efficiency and health of the driver and passengers. Therefore, the ride comfort of the car has become one of the important criteria for measuring the quality and performance of the vehicle. The car ride comfort pulse input test is an important technical method for evaluating the ride comfort of the car. By simulating the impact loading under different road conditions, the vibration and comfort performance of the vehicle can be quantitatively evaluated. This test has a wide range of application prospects in the field of automotive engineering, which can help automobile manufacturers continuously improve the ride comfort of the vehicle and meet consumers' demand for a smooth driving experience. The analysis of the results of the car ride comfort pulse input test is the key to evaluating the ride comfort of the car. By analyzing the vibration data, the vibration characteristics and comfort performance of the vehicle under different road conditions can be obtained. It can be seen that the accuracy of the car ride comfort pulse input test results directly affects the accuracy of the analysis. At present, most automobile companies produce multiple models at the same time. When the models are quite different, the sizes of the bumps used in the automobile smoothness pulse input test are different, especially the height of the bumps cannot be changed, so the versatility is relatively poor. When the models are quite different, it is often necessary to prepare bumps of different sizes when doing the automobile smoothness pulse input test. Because the positions of the two bumps in the test need to be consistent and unchanged, constantly changing the bumps will affect the test results. Companies often need to prepare different test sites for separate tests, which greatly increases the test cost.

[0003] The automobile smoothness pulse input test uses a bump test, and generally 8 groups of tests are required. Specifically, the test needs to be carried out at different vehicle speeds, including 10, 20, 30, 40, 50, and 60 km / h, and the number of tests for each speed must not be less than 8 times. After the test vehicle has gone back and forth many times, the bump may deviate from the initial position while being crushed by the wheels, and the positions of the two bumps corresponding to the left and right wheels are no longer consistent. The test personnel are required to re-fix the deviated bump, which increases labor and time costs, and cannot guarantee that the position of the bump after placement will be consistent with the position in the previous set of experiments, which affects the accuracy of the test data and reduces the accuracy of the test data analysis.

[0004] During the vehicle ride comfort pulse input test, the front and rear wheels of the vehicle pass over the bumps in turn. Since the time interval between the front and rear wheels passing the bumps is very short, the excitation generated by the front wheels passing over the bumps will affect the vibration of the rear wheels and the rear suspension. At this time, the measured vibration signal is mixed with the combined effects of the front and rear suspensions, and the accuracy of the test data analysis cannot be ensured. Summary of the invention

[0005] The purpose of the present invention is to provide a test device for a pulse input test of automobile ride comfort and a method for using the same. Two protrusions fixed to the top surface of a lifting device by bolts are fixed at intervals below the ground of a test site and correspond to the positions of the left and right wheels of a car. When the lifting device is not lifted at all, the top surface of the protrusion is flush with the ground. During the test, the lifting device drives the protrusion to rise and protrude from the ground to stimulate the wheels of the car. The two protrusions will not shift in position after multiple groups of tests, saving time and cost for manually adjusting the position of the protrusions and ensuring the consistency of the test conditions and the accuracy of the test results. The lifting device causes the protrusion to protrude from the ground. The height of the surface is adjustable, which improves the versatility of the bump. One test site can meet the needs of testing different models with large differences, saving the test cost. By setting a first photoelectric sensor to control the lifting device to rise or fall to the required position and then stop, it is possible to conduct separate excitation tests on the front wheels or rear wheels of the car, which can avoid the problem of vibration signal aliasing caused by the common excitation of the front and rear wheels, and ensure the accuracy of the test results. By setting a second photoelectric sensor to control the lifting device to rise and fall and stop, the bump can be automatically reset, which is convenient for the next set of tests, without manual adjustment, saving time and effort.

[0006] The specific contents of the plan are as follows:

[0007] A test device for a pulse input test of automobile ride comfort comprises two groups of photoelectrically controlled lifting bump assemblies, each group of photoelectrically controlled lifting bump assemblies comprises a lifting bump assembly and a photoelectric control assembly, the two groups of lifting bump assemblies are fixed at intervals under the ground of a test site and correspond to the positions of the wheels on the left and right sides of a test vehicle, the tops of the two groups of lifting bump assemblies are synchronously raised and lowered and stopped flush with the ground or above the ground, each group of photoelectric control assemblies is connected to the corresponding lifting bump assembly by electrical signals, each group of photoelectric control assemblies is respectively arranged in the ground of the test site and at corresponding positions of a test vehicle frame and can capture optical signals and convert them into electrical signals to control the lifting and stopping of the lifting bump assembly to constitute the excitation of the front wheels and / or rear wheels of the test vehicle and the automatic resetting of the lifting bump assembly.

[0008] The test road for the pulse input test of the vehicle ride comfort should be a straight cement road or asphalt road with a longitudinal slope of no more than 1% and a flat and dry road surface. This test device includes two sets of photoelectric control lifting bump assemblies, each set of photoelectric control lifting bump assemblies includes a lifting bump assembly and a photoelectric control assembly. The two sets of lifting bump assemblies are fixed under the ground of the test field at intervals corresponding to the positions of the left and right wheels of the test vehicle. The purpose is to solve the problem that the bumps move due to repeated rolling and collision by the car during the test. The two bumps do not move and remain in the same straight line. There is no need to manually adjust the position of the bumps again, which saves manpower and time. It also solves the problem that the position of the bump cannot be guaranteed to be completely consistent with the previous test position due to manual adjustment of the bump position, ensuring the consistency of the test conditions and the accuracy of the test results. The tops of the two groups of lifting bump assemblies can be raised and lowered synchronously according to a preset program, so that the top surface of the bump is flush with the ground or above the ground, which solves the problem that the height of the traditional bump cannot be adjusted, can meet the needs of testing cars with different models in the same test field, improves versatility, and saves the cost of setting up another test field for different models; each group of photoelectric control components is connected to the corresponding lifting bump assembly by electrical signals, and each group of photoelectric control components is respectively set in the ground of the test field and on the corresponding position of the test car frame and can capture the light signal and convert it into an electrical signal to send to the control system of the lifting bump assembly. The control system controls the lifting bump assembly to rise and stop according to different preset programs to achieve the excitation of the front and rear wheels of the test car or the front wheels alone or the rear wheels alone, and the automatic reset of the bump after the excitation is completed. The distance between the front and rear wheels of the car is too close. If the front and rear wheels pass through the bumps one after another, the excitation generated by the front wheel will interfere with the excitation generated by the rear wheel, making the test data inaccurate, which is not conducive to the analysis of the influence of the vibration of the front suspension or rear suspension on the ride comfort of the whole vehicle. The photoelectric control assembly of the present invention can convert optical signals into electrical signals to control the lifting bump assembly to rise and fall according to a preset program and stop, which can automatically constitute a separate excitation for the front wheel or rear wheel of the test vehicle. Separately stimulating the front wheel or rear wheel is the optimal solution for the test, ensuring the accuracy of the test results. When the lifting device is not lifted at all, the top surfaces of the two bumps are flush with the ground, ensuring that no vibration is generated when the wheels of the vehicle pass by. The load-bearing capacity of the lift used in the present invention is greater than the downward pressure generated by the test vehicle passing over the bumps, and the problem of the lift being crushed and lowered will not occur.

[0009] Furthermore, each group of lifting lug assemblies includes a lug and a lifting device, each lug is a rectangular block structure, two lugs are laterally spaced apart and arranged on the same straight line and correspond to the positions of the left and right wheels of the test vehicle, each lug is fixedly connected to the top surface of the corresponding lifting device, the two lifting devices are spaced apart and fixed under the ground of the test site, and the tops of the two lifting devices are raised and lowered synchronously, and the top surfaces of the two lugs can be flush with the ground of the test site or be convexly arranged at the same height above the ground of the test site.

[0010] The bump bolts of the lifting bump assembly of the present invention are fixed on the top surface of the lifting device, and the bumps can also be fixed by other detachable connection methods. The detachable connection and fixation are conducive to the replacement of the bumps after they are worn. The two bumps are arranged horizontally, that is, the length of the bumps matches the maximum width of the test car wheel. In order to improve the versatility of the bumps, the length of the bumps can be prefabricated according to the actual needs of the car company to meet the needs of testing the test car with the largest wheel width. The height of the bump is adjusted by the lifting and lowering of the lifting device to adjust the height of the bump protruding from the ground of the test field to meet the needs of different cars with large differences in model and height using the same test field for smoothness pulse input tests. The bumps of the present invention can be made of rubber and metal materials, and the height can be around 100 mm, covering national standards and enterprise standards as needed.

[0011] Furthermore, each lifting device includes a lift, and each lift includes a base, a lifting bracket, a driving device and a control system. The lifting bracket is telescopically connected to the base, the driving device is transmission-connected to the lifting bracket, the control system is electrically connected to the driving device, and the top surface of the lifting bracket is fixedly connected with a corresponding protrusion. The two lifting brackets and the correspondingly connected protrusions are raised and lowered synchronously, and the two groups of photoelectric control components are respectively connected to the corresponding control systems by electrical signals and control the lifting and stopping of the lifting brackets through the control system.

[0012] The lifting device of the present invention is preferably a lift, and the photoelectric control component sends an electrical signal to the control system of the lift to control the lifting bracket to drive the protrusion to rise and fall together and stop, thereby stimulating the front wheels and / or rear wheels of the test vehicle or automatically resetting the protrusion after the stimulation is completed.

[0013] Furthermore, the lift is an electric cylinder lift.

[0014] The electric cylinder lift of the present invention is the best solution. The electric cylinder lift uses an electric motor to drive the screw to rotate, which is converted into linear motion through a nut and drives the slide to reciprocate along the guide rail. Compared with the hydraulic lift, the speed changes quickly, there is no hysteresis effect, and the precise positioning is good. The bracket material of the electric cylinder lift should be high-strength steel, and its strength should ensure that the car can pass through its upper surface stably; the electric cylinder lift is fixed with the bump bolts, and in the initial state without lifting action, the top surface of the bump is flush with the ground.

[0015] Furthermore, each group of photoelectric control components includes a first photoelectric sensor, and the electrical signals of the two first photoelectric sensors of the left and right groups of photoelectric control components are connected to the corresponding control system. The components of the two first photoelectric sensors are respectively arranged on the ground in front of the bump of the test site and on the corresponding positions of the frame behind the front wheels of the test vehicle, and can capture light signals and convert them into electrical signals. After receiving the electrical signals, the control system controls the lifting bracket to rise and stop, thereby stimulating the front wheels and / or rear wheels of the test vehicle.

[0016] Furthermore, each first photoelectric sensor includes a first light emitter and a first light receiver. The two first light emitters are respectively detachably fixedly connected to the frame behind the left and right front wheels of the test vehicle. The light emitting surface of each first light emitter faces the ground. The two first light receivers are respectively embedded in the ground in front of the corresponding protrusions with their light receiving surfaces facing upward. After the first light receiver captures the light signal of the first light emitter, it is converted into an electrical signal and sent to the control system of the lift. The control system controls the lifting and stopping of the lifting bracket.

[0017] The first light receiver of the first photoelectric sensor of each group of photoelectric control components is embedded in the ground of the test field in front of the bump, and the receiver receives the light signal vertically upward; the first light emitter is on the frame behind the front wheel of the test car, 20 to 50 mm away from the rear side of the front wheel, and is fixed so that the light emits the light signal vertically to the ground. When the test car drives forward over the bump, the first light receiver captures the light signal emitted by the first light emitter, and converts the light signal into an electrical signal and sends it to the control system of the lift. After receiving the signal, the control system controls the lifting bracket to rise or fall according to the pre-set wheel excitation program, and stops after reaching the set position, which constitutes an excitation for the wheels of the test car. The setting of the first photoelectric sensor enables the lifting bump assembly to automatically rise and fall and stop according to the preset program, which constitutes an excitation for the wheels of the test car, and in particular, it can automatically complete the separate excitation of the front wheels or rear wheels of the test car, ensuring the accuracy of the test results, saving time, effort and cost.

[0018] Through the cooperation of the first photoelectric sensor and the control system of the lift, there are three control situations for exciting the test vehicle, as follows:

[0019] 1. Joint excitation of the front and rear wheels: Before the test, a control program for jointly exciting the front and rear wheels of the vehicle is preset in the control system of the lift. The lift is manually controlled to drive the bump to be lifted before the test begins. The bump protrudes from the ground of the test site and stops after reaching the height required for the test vehicle model test. When the front wheel of the vehicle stimulates the front wheel through the bump, the first light emitter moves to just above the first light receiver, the first light receiver captures the light signal generated by the first light emitter, and converts it into an electrical signal and sends it to the control system of the lift. The control system controls the lifting bracket of the lift to keep it in a stopped state according to the preset program, that is, the bump is still protruding above the ground, and the rear wheel of the test vehicle excites the rear wheel through the bump, thereby completing the joint excitation of the front and rear wheels of the vehicle.

[0020] 2. Excite the front wheels separately: Before the test, a control program for separately exciting the front wheels of the car can be preset in the control system of the lift. The lift is manually controlled to drive the bump to be lifted before the test begins. The bump protrudes from the ground of the test site and stops after reaching the height required for testing the test vehicle model. When the front wheel of the car excites the front wheel through the bump, the first light emitter moves to just above the first light receiver, the first light receiver captures the light signal generated by the first light emitter, and converts it into an electrical signal and sends it to the control system of the lift. The control system controls the lifting bracket of the lift according to the preset wheel excitation program to drive the bump to descend until the top surface of the bump is flush with the ground. The rear wheel of the test vehicle passes through the bump, and no vibration is generated because the bump is flush with the surrounding ground, thereby constituting a separate excitation of the front wheel of the test vehicle.

[0021] 3. Excite the rear wheels separately: Before the test, a control program for separately exciting the rear wheels of the car can be preset in the control system of the lift. The lift is manually controlled to maintain a non-lifted state before the test begins, and the top surface of the bump is flush with the surrounding ground. When the front wheel of the car passes through the bump without generating excitation, the first light emitter moves to directly above the first light receiver, and the first light receiver captures the light signal generated by the first light emitter, converts it into an electrical signal and sends it to the control system of the lift. The control system controls the lifting bracket of the lift according to the preset vehicle excitation program to drive the bump to lift out of the ground until it reaches the height required by the test vehicle model and stops. The rear wheels of the test vehicle are excited by the bump, which constitutes a separate excitation of the rear wheels of the test vehicle.

[0022] Among the above three situations, the scheme of stimulating the front wheels of the test vehicle alone or stimulating the rear wheels of the vehicle alone is better.

[0023] Furthermore, each group of photoelectric control components also includes a second photoelectric sensor. The electrical signals of the two second photoelectric sensors of the left and right groups of photoelectric control components are connected to the corresponding control system. The components of the two second photoelectric sensors are respectively arranged on the ground in front of the bump of the test site and on the corresponding positions of the frame behind the rear wheels of the test vehicle, and can capture light signals and convert them into electrical signals. After receiving the electrical signals, the control system controls the lifting bracket to rise and stop according to the preset bump reset program to automatically reset the bump.

[0024] The purpose of setting the second photoelectric sensor of the present invention is to enable the convex block to automatically reset after the excitation is completed, so as to facilitate the next test without manual adjustment, thus saving time and labor.

[0025] Furthermore, each second photoelectric sensor includes a second light emitter and a second light receiver. The two second light emitters are respectively detachably fixedly connected to the frame behind the left and right rear wheels of the test vehicle. The light emitting surface of each second light emitter faces the ground. The two second light receivers are respectively embedded in the ground in front of the corresponding protrusion with their light receiving surfaces facing upward. After the second light receiver captures the light signal of the second light emitter, it is converted into an electrical signal and sent to the control system of the lift. The control system controls the lifting bracket to stop rising and falling to automatically reset the protrusion.

[0026] The second light emitter is bolted to the frame behind the rear wheel of the test vehicle, 20 to 50 mm from the rear side of the front wheel, and is embedded in the ground in front of the bump with the second light receiver, located on the inner side of the first light receiver. The second light receiver matches the position of the second light emitter. When the rear wheel of the vehicle passes the bump, the second light emitter moves with the vehicle to the top of the second light receiver. The second light receiver captures the light signal emitted by the second light emitter and converts it into an electrical signal and sends it to the control system of the lift. After receiving the electrical signal, the control system controls the lifting bracket to drive the bump up or down according to the preset bump reset program, and stops when the bump reaches the preset position. Due to the different installation positions, the first light receiver can only receive the light signal of the first light emitter, and the second light receiver can only receive the light signal of the second light emitter, and there will be no cross reception. Because the bump remains protruding above the ground when the front and rear wheels of the vehicle are jointly stimulated, the control operation of the automatic reset of the bump is only described in detail in the following two cases:

[0027] 1. When the front wheel is stimulated alone, after the rear wheel of the car passes through the bump, the second light receiver captures the light signal of the second light receiver and converts it into an electrical signal and sends it to the control system. The control system controls the lifting bracket to rise according to the preset bump reset program, and stops when the bump reaches the preset height, which is convenient for the test car to be tested directly the next time, which is convenient and fast, saving time, effort and labor.

[0028] 2. When the rear wheel is stimulated separately, after the rear wheel of the car passes through the bump, the second light receiver captures the optical signal of the second light receiver and converts it into an electrical signal and sends it to the control system. The control system controls the lifting bracket to descend according to the preset bump reset program, and the bump stops when it drops to the same level as the ground, so that the test car can be tested directly the next time, which is convenient, fast, time-saving, labor-saving and manpower-saving.

[0029] Furthermore, the length of each bump matches the maximum width of the test vehicle wheel, and the height of each bump protruding from the ground of the test field matches the height of the test vehicle wheel.

[0030] In order to improve the versatility of the test site and meet the demand of using the same test site for testing cars with greatly different models, when making the bump, the length of the bump is matched with the maximum width of the wheel in the car model produced by the car company, and the height of the bump is made according to the height of the bump required by the highest car model produced, and the versatility of the test site is improved by the cooperation of the lifting device and the photoelectric controller.

[0031] A method for using a test device for a vehicle ride comfort pulse input test comprises the following steps:

[0032] S1. The two lifts are fixedly installed under the ground at the starting point of the test. The installation positions of the two lifts are such that the two protrusions fixed on the top surface of the lifts by bolts are facing the forward direction of the car and are arranged horizontally in the same straight line, and the distance between the two protrusions matches the interval between the left and right wheels of the test car. A rectangular hole is opened on the ground at the corresponding position of the protrusion. The size and shape of the rectangular hole match the size and shape of the protrusion, so that the two protrusions can move freely up and down in the rectangular hole without interference. When the two lifts are lowered to the lowest point, the top surfaces of the two protrusions are flush with the ground of the test field;

[0033] S2. A first light receiver and a second light receiver are respectively embedded and installed in the ground near the front of each protrusion, the first light receiver and the second light receiver are arranged on the left and right, and the light receiving surfaces of the first light receiver and the second light receiver are both facing upward;

[0034] S3. First light emitters are bolted to the positions adjacent to the rear frame of the left and right front wheels of the test vehicle. The positions of the two first light emitters match the positions of the first light receivers on the same side and the light-emitting faces are downward, ensuring that the two first light receivers can capture the light signals emitted by the corresponding first light emitters after the front wheels of the vehicle pass over the bumps and convert them into electrical signals to send to the control system. Before the test begins, the wheel excitation and bump reset programs are pre-set in the control system. After receiving the electrical signals, the control system controls the lifting bracket and the bump to rise or fall according to the preset wheel excitation program and stops at a suitable height to excite the front and / or rear wheels of the test vehicle.

[0035] S4. Bolt the second light emitters on the positions near the rear frame of the left and right rear wheels of the test vehicle respectively. The positions of the two second light emitters match the positions of the second light receivers on the same side respectively, so as to ensure that the second light receivers can capture the light signals emitted by the corresponding second light emitters after the rear wheels of the vehicle pass over the bump. The control system controls the lifting bracket to rise or fall according to the preset bump reset program and stops at a suitable height to automatically reset the bump, so as to facilitate the next group of tests to be carried out directly;

[0036] S5. After completing multiple groups of tests on a test vehicle, the test personnel remove the two first light emitters and the two second light emitters from its frame, and re-bolt them to the corresponding positions on the frame of the next test vehicle, and start a new round of tests.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The two protrusions fixed on the top of the lifting device of the present invention are fixedly arranged horizontally below the ground of the test site, and the positions of the two protrusions correspond to the positions of the left and right wheels of the car. Because the protrusions are fixed on the lifting device, even after multiple sets of tests, the protrusions will not be offset due to the rolling of the car, and there is no need to manually adjust the position, which saves time and effort, saves labor costs, and ensures the accuracy of the test results;

[0039] 2. The lifting device of the present invention can adjust the height of the protruding block above the ground, and the length of the protruding block matches the maximum wheel width. There is no need to make new protruding blocks and set up new test sites, which improves the versatility of the protruding blocks, can meet the test needs of more vehicle models with large differences in enterprises, and save test costs;

[0040] 3. The setting of the first photoelectric sensor of the present invention can automatically control the rise and fall of the bump and stop it at a suitable position, which can not only realize the joint excitation of the front and rear wheels in the traditional test, but also meet the demand of separately exciting the front wheels or rear wheels of the test vehicle. Separately exciting the front wheels or rear wheels of the vehicle is the optimal solution, which can avoid the aliasing of the vibration signals of the front suspension and the rear suspension, and more accurately analyze the influence of the vibration of the front suspension or the rear suspension on the smoothness of the whole vehicle, thereby ensuring the accuracy of the test results.

[0041] 4. The second photoelectric sensor of the present invention is installed on the vehicle frame behind the rear wheel of the test vehicle. After the rear wheel passes through the bump, the bump is automatically controlled to rise or fall to a desired height and then stop. There is no need for manual resetting, which is convenient, fast, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the present invention when the front wheel does not pass through the bump in the joint excitation test of the front and rear wheels of a car;

[0043] Figure 2 It is a schematic diagram of the front wheel passing through the bump in the test of the joint excitation of the front and rear wheels of a car according to the present invention;

[0044] Figure 3 It is a schematic diagram of the present invention after the rear wheel passes through the bump in the joint excitation test of the front and rear wheels of a car;

[0045] Figure 4 It is a schematic diagram of the present invention when the front wheel fails to pass through the bump in the individual excitation test of the front wheel of the automobile;

[0046] Figure 5 It is a schematic diagram of the front wheel passing through the bump in the individual excitation test of the front wheel of the automobile according to the present invention;

[0047] Figure 6 It is a schematic diagram of the rear wheel passing through the bump in the individual excitation test of the front wheel of the automobile according to the present invention;

[0048] Figure 7 It is a schematic diagram of the present invention when the front wheel does not pass through the bump in the rear wheel individual excitation test of the automobile;

[0049] Figure 8 It is a schematic diagram of the front wheel passing through the bump in the vehicle rear wheel individual excitation test of the present invention;

[0050] Fig. 9 It is a schematic diagram of the rear wheel passing through the bump in the individual excitation test of the rear wheel of the automobile according to the present invention;

[0051] Fig.10 It is a structural schematic diagram of the lifting lug assembly of the present invention;

[0052] Fig.11 It is a schematic structural diagram of the first photoelectric sensor of the present invention.

[0053] In the figure:

[0054] 1. Photoelectrically controlled lifting bump assembly; 1.1. Lifting bump assembly; 1.11. Bump; 1.12. Lifting device; 1.121. Base; 1.122. Lifting bracket; 1.123. Driving device; 1.124. Control system; 1.2. Photoelectric control assembly; 1.21. First photoelectric sensor; 1.211. First light emitter; 1.212. First light receiver; 1.22. Second photoelectric sensor; 1.221. Second light emitter; 1.222. Second light receiver. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0057] It should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inside", "outside", "left", "right", etc. in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0058] It is particularly important to point out that any symbol and / or number in the specification which is not marked in the accompanying drawings is not a drawing mark.

[0059] The embodiment provided by the present invention, namely, an embodiment of a test device and a method for using the test of a pulse input test of a vehicle ride comfort, is described below in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 Provide detailed explanation.

[0060] Embodiment 1:

[0061] See Figure 1 , Figure 2 and Figure 3 As shown, a test device for a pulse input test of a vehicle ride comfort comprises two groups of photoelectrically controlled lifting bump assemblies 1, each group of photoelectrically controlled lifting bump assemblies 1 comprises a lifting bump assembly 1.1 and a photoelectric control assembly 1.2, the two groups of lifting bump assemblies 1.1 are fixed at intervals under the ground of a test site and correspond to the positions of the wheels on the left and right sides of the test vehicle, the tops of the two groups of lifting bump assemblies 1.1 are synchronously raised and lowered and stopped flush with the ground or above the ground, each group of photoelectric control assemblies 1.2 are connected to the corresponding lifting bump assembly 1.1 by electrical signals, each group of photoelectric control assemblies 1.2 are respectively arranged in the ground of the test site and at corresponding positions of the test vehicle frame and can capture optical signals and convert them into electrical signals to control the lifting and stopping of the lifting bump assembly 1.1 to constitute the excitation of the front wheels and / or rear wheels of the test vehicle and the automatic resetting of the lifting bump assembly 1.1.

[0062] See Fig.10As shown, each group of lifting lug assemblies 1.1 includes a lug 1.11 and a lifting device 1.12, each lug 1.11 is a rectangular block structure, two lugs 1.11 are arranged laterally at intervals on the same straight line and correspond to the positions of the left and right wheels of the test vehicle, each lug 1.11 is fixedly connected to the top surface of the corresponding lifting device 1.12, the two lifting devices 1.12 are accommodated and fixed under the ground of the test site at intervals, and the tops of the two lifting devices 1.12 rise and stop synchronously, and the top surfaces of the two lugs 1.11 are flush with each other and protrude above the ground of the test site.

[0063] Each lifting device 1.12 includes a lift, and each lift includes a base 1.121, a lifting bracket 1.122, a driving device 1.123 and a control system 1.124. The lifting bracket 1.122 is telescopically connected to the base 1.121, the driving device 1.123 is transmission-connected to the lifting bracket 1.122, and the control system 1.124 is electrically connected to the driving device 1.123. The top surface of the lifting bracket 1.122 is fixedly connected with a corresponding protrusion 1.11. The two lifting brackets 1.122 and the correspondingly connected protrusions 1.11 rise and stop synchronously. The two groups of photoelectric control components 1.2 are respectively connected to the corresponding control system 1.124 by electrical signals and control the lifting bracket 1.122 to keep it stopped through the control system 1.124.

[0064] The lift is an electric cylinder lift.

[0065] See Fig.11 As shown, each group of photoelectric control components 1.2 includes a first photoelectric sensor 1.21. The electrical signals of the two first photoelectric sensors 1.21 of the left and right groups of photoelectric control components 1.2 are connected to the corresponding control system 1.124. The components of the two first photoelectric sensors 1.21 are respectively arranged in the ground in front of the bump 1.11 of the test site and on the corresponding positions of the frame behind the front wheels of the test car, and can capture light signals and convert them into electrical signals. The control system 1.124 controls the lifting bracket 1.122 to keep stopped, thereby constituting a common excitation for the front and rear wheels of the car.

[0066] Each first photoelectric sensor 1.21 includes a first light emitter 1.211 and a first light receiver 1.212. The two first light emitters 1.211 are detachably fixedly connected to the frame behind the left and right front wheels of the test vehicle. The light-emitting surface of each first light emitter 1.211 faces the ground. The two first light receivers 1.212 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. The first light receiver 1.212 captures the light signal of the first light emitter 1.211 and converts it into an electrical signal and sends it to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to keep stopped to stimulate the front and rear wheels of the test vehicle.

[0067] Each group of photoelectric control components 1.2 also includes a second photoelectric sensor 1.22. The electrical signals of the two second photoelectric sensors 1.22 of the left and right groups of photoelectric control components 1.2 are connected to the corresponding control system 1.124. The components of the two second photoelectric sensors 1.22 are respectively arranged on the ground in front of the bump 1.11 of the test site and on the corresponding positions of the frame behind the rear wheels of the test car, and can capture light signals and convert them into electrical signals. After receiving the electrical signals, the control system 1.124 controls the lifting bracket 1.122 to keep stopped.

[0068] Each second photoelectric sensor 1.22 includes a second light emitter 1.221 and a second light receiver 1.222. The two second light emitters 1.221 are detachably fixedly connected to the frame behind the left and right rear wheels of the test vehicle, and the light-emitting surface of each second light emitter 1.221 faces the ground. The two second light receivers 1.222 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. After the second light receiver 1.222 captures the light signal of the second light emitter 1.221, it converts it into an electrical signal and sends it to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to keep it stopped.

[0069] The length of each protrusion 1.11 matches the maximum width of the test vehicle wheel, and the height of each protrusion 1.11 protruding from the ground of the test field matches the height of the test vehicle wheel.

[0070] In this embodiment, the lifting device 1.12 uses an electric cylinder lift, which is controlled to lift before the test begins, so that the protrusion 1.11 rises and protrudes out of the test field ground and stops after reaching the height required for the test vehicle model test; the test is started after the control system 1.124 of the electric cylinder lift sets a program for jointly exciting the front and rear wheels of the vehicle. When the front wheel of the vehicle stimulates the front wheel through the protrusion 1.11, the first light emitter 1.211 moves to the top of the first light receiver 1.212, and the first light receiver 1.212 captures the light signal generated by the first light emitter 1.211, and converts it into an electrical signal and sends it to the control system of the lift. 1.124, the control system controls the lifting bracket 1.122 to remain stopped according to a preset program; when the rear wheel of the car passes through the bump 1.11, the second light emitter 1.221 moves to directly above the second light receiver 1.222, the second light receiver 1.222 captures the light signal generated by the second light emitter 1.221, and converts it into an electrical signal and sends it to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to remain stopped according to a preset program; it is convenient for the test car to carry out the next set of tests without manually adjusting the position of the bump 1.11. This embodiment is not the optimal solution and cannot guarantee the accuracy of the test results.

[0071] Embodiment 2:

[0072] See Figure 4 , Figure 5 and Figure 6 As shown, a test device for a pulse input test of a vehicle ride comfort comprises two groups of photoelectrically controlled lifting bump assemblies 1, each group of photoelectrically controlled lifting bump assemblies 1 comprises a lifting bump assembly 1.1 and a photoelectric control assembly 1.2, the two groups of lifting bump assemblies 1.1 are fixed at intervals under the ground of a test site and correspond to the positions of the wheels on the left and right sides of the test vehicle, the tops of the two groups of lifting bump assemblies 1.1 are synchronously raised and lowered and stopped flush with the ground or above the ground, each group of photoelectric control assemblies 1.2 are connected to the corresponding lifting bump assembly 1.1 by electrical signals, each group of photoelectric control assemblies 1.2 are respectively arranged in the ground of the test site and at corresponding positions of the test vehicle frame and can capture optical signals and convert them into electrical signals to control the lifting and stopping of the lifting bump assembly 1.1 to constitute the excitation of the front wheels and / or rear wheels of the test vehicle and the automatic resetting of the lifting bump assembly 1.1.

[0073] See Fig.10 As shown, each group of lifting lug assemblies 1.1 includes a lug 1.11 and a lifting device 1.12, each lug 1.11 is a rectangular block structure, two lugs 1.11 are arranged laterally at intervals on the same straight line and correspond to the positions of the left and right wheels of the test vehicle, each lug 1.11 is fixedly connected to the top surface of the corresponding lifting device 1.12, the two lifting devices 1.12 are accommodated and fixed under the ground of the test site at intervals, and the tops of the two lifting devices 1.12 rise and stop synchronously, and the top surfaces of the two lugs 1.11 can be flush with the ground of the test site.

[0074] Each lifting device 1.12 includes a lift, and each lift includes a base 1.121, a lifting bracket 1.122, a driving device 1.123 and a control system 1.124. The lifting bracket 1.122 is telescopically connected to the base 1.121, the driving device 1.123 is transmission-connected to the lifting bracket 1.122, the control system 1.124 is electrically connected to the driving device 1.123, and the top surface of the lifting bracket 1.122 is fixedly connected with a corresponding protrusion 1.11. The two lifting brackets 1.122 and the correspondingly connected protrusions 1.11 rise and stop synchronously, and the two groups of photoelectric control components 1.2 are respectively connected to the corresponding control system 1.124 by electrical signals and control the lifting bracket 1.122 to rise and stop through the control system 1.124.

[0075] The lift is an electric cylinder lift.

[0076] See Fig.11As shown, each group of photoelectric control components 1.2 includes a first photoelectric sensor 1.21. The two first photoelectric sensors 1.21 of the left and right groups of photoelectric control components 1.2 are electrically connected to the corresponding control system 1.124. The components of the two first photoelectric sensors 1.21 are respectively arranged in the ground in front of the protrusion 1.11 of the test site and on the corresponding positions of the frame behind the front wheels of the test car, and can capture optical signals and convert them into electrical signals. After receiving the electrical signals, the control system 1.124 controls the lifting bracket 1.122 to descend until the top surface of the protrusion 1.11 is flush with the ground and stops, thereby constituting a separate excitation for the front wheels of the car.

[0077] Each first photoelectric sensor 1.21 includes a first light emitter 1.211 and a first light receiver 1.212. The two first light emitters 1.211 are detachably fixedly connected to the frame behind the left and right front wheels of the test vehicle. The light-emitting surface of each first light emitter 1.211 faces the ground. The two first light receivers 1.212 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. The first light receiver 1.212 captures the light signal of the first light emitter 1.211 and converts it into an electrical signal and sends it to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to descend until the top surface of the protrusion 1.11 is flush with the ground, thereby constituting a separate excitation for the front wheels of the vehicle.

[0078] Each group of photoelectric control components 1.2 also includes a second photoelectric sensor 1.22. The electrical signals of the two second photoelectric sensors 1.22 of the left and right groups of photoelectric control components 1.2 are connected to the corresponding control system 1.124. The components of the two second photoelectric sensors 1.22 are respectively arranged in the ground in front of the protrusion 1.11 of the test site and on the corresponding positions of the frame behind the rear wheels of the test car, and can capture light signals and convert them into electrical signals. After receiving the electrical signals, the control system 1.124 controls the lifting bracket 1.122 to rise to the protrusion 1.11 protruding above the ground and stop, which constitutes the automatic reset of the protrusion 1.11.

[0079] Each second photoelectric sensor 1.22 includes a second light emitter 1.221 and a second light receiver 1.222. The two second light emitters 1.221 are detachably fixedly connected to the frame behind the left and right rear wheels of the test vehicle, and the light-emitting surface of each second light emitter 1.221 faces the ground. The two second light receivers 1.222 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. After the second light receiver 1.222 captures the light signal of the second light emitter 1.221, it is converted into an electrical signal and sent to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to rise and stop until the protrusion 1.11 protrudes above the ground, which constitutes the automatic resetting of the protrusion 1.11.

[0080] The length of each protrusion 1.11 matches the maximum width of the test vehicle wheel, and the height of each protrusion 1.11 protruding from the ground of the test field matches the height of the test vehicle wheel.

[0081] In this embodiment, the lifting device 1.12 uses an electric cylinder lift. Before the test, a control program for stimulating the front wheels of the car is preset in the control system 1.124 of the electric cylinder lift. The electric cylinder lift is controlled to lift before the test starts, so that the bump 1.11 rises and protrudes from the ground of the test field and stops after reaching the height required for the test vehicle model test; when the front wheel of the car stimulates the front wheel through the bump 1.11, the first light emitter 1.211 moves to the top of the first light receiver 1.212, the first light receiver 1.212 captures the light signal generated by the first light emitter 1.211, and converts it into an electrical signal and sends it to the control system 1.124. The control system 1.124 controls the lifting bracket 1.122 of the lift according to the preset program to drive the bump 1.11 to descend to the bump 1. The top surface of 11 is flush with the ground and stops, the rear wheel of the test car passes through the protrusion 1.11, and because the protrusion 1.11 is flush with the surrounding ground, no vibration is generated, which constitutes a separate excitation for the front wheel of the test car; when the second light emitter 1.221 moves to just above the second light receiver 1.222, the second light receiver 1.222 captures the light signal emitted by the second light emitter 1.221, and converts it into an electrical signal and sends it to the control system 1.124. The control system 1.124 controls the lifting bracket 1.122 to rise to the required height for the test and then stop according to a preset program, which is convenient for the test car to carry out the next set of tests. There is no need to manually adjust the position of the protrusion 1.11, and the automatic resetting of the protrusion 1.11 is completed. This embodiment is the optimal solution. Exciting the front wheels of the car alone can ensure the accuracy of the test results.

[0082] Embodiment 3:

[0083] See Figure 7 , Figure 8 and Fig. 9 As shown, a test device for a pulse input test of a vehicle ride comfort comprises two groups of photoelectrically controlled lifting bump assemblies 1, each group of photoelectrically controlled lifting bump assemblies 1 comprises a lifting bump assembly 1.1 and a photoelectric control assembly 1.2, the two groups of lifting bump assemblies 1.1 are fixed at intervals under the ground of a test site and correspond to the positions of the wheels on the left and right sides of the test vehicle, the tops of the two groups of lifting bump assemblies 1.1 are synchronously raised and lowered and stopped flush with the ground or above the ground, each group of photoelectric control assemblies 1.2 are connected to the corresponding lifting bump assembly 1.1 by electrical signals, each group of photoelectric control assemblies 1.2 are respectively arranged in the ground of the test site and at corresponding positions of the test vehicle frame and can capture optical signals and convert them into electrical signals to control the lifting and stopping of the lifting bump assembly 1.1 to constitute the excitation of the front wheels and / or rear wheels of the test vehicle and the automatic resetting of the lifting bump assembly 1.1.

[0084] See Fig.10 As shown, each lifting block assembly 1.1 includes a block 1.11 and a lifting device 1.12. Each block 1.11 is a rectangular block structure. Two blocks 1.11 are arranged in a horizontal space on the same straight line and correspond to the positions of the left and right wheels of the test vehicle. Each block 1.11 is fixedly connected to the top surface of the corresponding lifting device 1.12. The two lifting devices 1.12 are fixedly accommodated and fixed under the ground of the test site, and the tops of the two lifting devices 1.12 are synchronously raised and lowered and stopped. The top surfaces of the two blocks 1.11 are flush with the ground of the test site.

[0085] Each lifting device 1.12 includes a lift, and each lift includes a base 1.121, a lifting bracket 1.122, a driving device 1.123 and a control system 1.124. The lifting bracket 1.122 is telescopically connected to the base 1.121, the driving device 1.123 is transmission-connected to the lifting bracket 1.122, and the control system 1.124 is electrically connected to the driving device 1.123. The top surface of the lifting bracket 1.122 is fixedly connected with a corresponding protrusion 1.11. The two lifting brackets 1.122 and the correspondingly connected protrusions 1.11 are synchronously raised and lowered and stopped. The two groups of photoelectric control components 1.2 are respectively connected to the corresponding control system 1.124 by electrical signals and control the lifting bracket 1.122 to keep it stopped through the control system 1.124.

[0086] The lift is an electric cylinder lift.

[0087] See Fig.11 As shown, each group of photoelectric control components 1.2 includes a first photoelectric sensor 1.21. The two first photoelectric sensors 1.21 of the left and right groups of photoelectric control components 1.2 are electrically connected to the corresponding control system 1.124. The components of the two first photoelectric sensors 1.21 are respectively arranged in the ground in front of the protrusion 1.11 of the test site and on the corresponding positions of the frame behind the front wheels of the test vehicle, and can capture optical signals and convert them into electrical signals. After receiving the electrical signals, the control system 1.124 controls the lifting bracket 1.122 to rise and stop until the protrusion 1.11 protrudes above the ground to stop, thereby constituting a separate excitation for the rear wheels of the vehicle.

[0088] Each first photoelectric sensor 1.21 includes a first light emitter 1.211 and a first light receiver 1.212. The two first light emitters 1.211 are detachably fixedly connected to the frame behind the left and right front wheels of the test vehicle, and the light-emitting surface of each first light emitter 1.211 faces the ground. The two first light receivers 1.212 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. The first light receiver 1.212 captures the light signal of the first light emitter 1.211 and converts it into an electrical signal and sends it to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to rise and stop until the protrusion 1.11 protrudes above the ground to constitute a separate excitation for the rear wheels of the vehicle.

[0089] Each group of photoelectric control components 1.2 also includes a second photoelectric sensor 1.22. The electrical signals of the two second photoelectric sensors 1.22 of the left and right groups of photoelectric control components 1.2 are connected to the corresponding control system 1.124. The components of the two second photoelectric sensors 1.22 are respectively arranged in the ground in front of the protrusion 1.11 of the test site and on the corresponding positions of the frame behind the rear wheels of the test car, and can capture light signals and convert them into electrical signals. After receiving the electrical signal, the control system 1.124 controls the lifting bracket 1.122 to descend until the top surface of the protrusion 1.11 is flush with the ground and stops, which constitutes the automatic reset of the protrusion 1.11.

[0090] Each second photoelectric sensor 1.22 includes a second light emitter 1.221 and a second light receiver 1.222. The two second light emitters 1.221 are detachably fixedly connected to the frame behind the left and right rear wheels of the test vehicle, and the light-emitting surface of each second light emitter 1.221 faces the ground. The two second light receivers 1.222 are respectively embedded in the ground in front of the corresponding protrusion 1.11 with their light-receiving surfaces facing upward. After the second light receiver 1.222 captures the light signal of the second light emitter 1.221, it is converted into an electrical signal and sent to the control system 1.124 of the lift. The control system 1.124 controls the lifting bracket 1.122 to descend until the top surface of the protrusion 1.11 is flush with the ground and stops, thereby automatically resetting the protrusion 1.11.

[0091] The length of each protrusion 1.11 matches the maximum width of the test vehicle wheel, and the height of each protrusion 1.11 protruding from the ground of the test field matches the height of the test vehicle wheel.

[0092] In this embodiment, the lifting device 1.12 uses an electric cylinder lift. Before the test, a control program for separately stimulating the rear wheels of the car is preset in the control system 1.124 of the electric cylinder lift, so that the electric cylinder lift remains in a non-lifting state before the test begins. The top surface of the protrusion 1.11 is flush with the surrounding ground, and the front wheels of the car do not generate stimulation when passing through the protrusion 1.11. After the car passes through the protrusion 1.11, when the first light emitter 1.211 moves to directly above the first light receiver 1.212, the first light receiver 1.211 captures the light signal generated by the first light emitter 1.212, and converts it into an electrical signal and sends it to the control system 1.124. The control system controls the lifting bracket 1.122 according to the preset program to drive the protrusion 1.11 to rise to the height of the protrusion 1.11 required by the test car model and stops. The rear wheels of the test car are stimulated by the protrusion 1.11, which constitutes a separate stimulation of the rear wheels of the test car. When the second light emitter 1.221 moves to just above the second light receiver 1.222, the second light receiver 1.222 captures the light signal emitted by the second light emitter 1.221, and converts it into an electrical signal and sends it to the control system 1.124. The control system controls the lifting bracket 1.122 to descend according to a preset program until the top surface of the bump 1.11 is flush with the surrounding ground, so as to facilitate the test vehicle to carry out the next set of tests. There is no need to manually adjust the position of the bump 1.11, and the bump 1.11 is automatically reset. This embodiment is the optimal solution, and stimulating the rear wheels of the vehicle alone can ensure the accuracy of the test results.

[0093] Embodiment 4:

[0094] The present invention also provides a method for using a test device for a pulse input test of a vehicle ride comfort, comprising the following steps:

[0095] S1. Two lifts are fixedly installed under the ground at the starting point of the test. The installation positions of the two lifts are such that the two protrusions 1.11 fixed on the top surface of the lifts face the direction of the vehicle and are arranged horizontally in the same straight line. The distance between the two protrusions 1.11 matches the interval between the left and right wheels of the test vehicle. A rectangular hole is opened on the ground at the corresponding position of the protrusion 1.11. The size and shape of the rectangular hole match the size and shape of the protrusion 1.11, so that the two protrusions 1.11 can move freely up and down in the rectangular hole without interference. When the two lifts are lowered to the lowest point, the top surfaces of the two protrusions 1.11 are flush with the ground of the test site.

[0096] S2. A first light receiver 1.212 and a second light receiver 1.222 are respectively embedded and installed in the ground near the front of each protrusion 1.11. The first light receiver 1.212 and the second light receiver 1.222 are arranged left and right, and the light receiving surfaces of the first light receiver 1.212 and the second light receiver 1.222 are both facing upwards;

[0097] S3. First light emitters 1.211 are bolted to the positions adjacent to the rear frame of the left and right front wheels of the test vehicle. The positions of the two first light emitters 1.211 match the positions of the first light receivers 1.212 on the same side and the light-emitting faces are downward, ensuring that after the front wheels of the vehicle pass over the bump 1.11, the two first light receivers 1.212 can capture the light signals emitted by the corresponding first light emitters 1.211 and convert them into electrical signals to send to the control system 1.124. Before the test begins, the wheel excitation and reset programs are pre-set in the control system 1.124. After receiving the electrical signals, the control system 1.124 controls the lifting bracket 1.122 and the bump 1.11 to rise or fall according to the preset wheel excitation program and stops at a suitable height to excite the front and / or rear wheels of the test vehicle.

[0098] S4. Bolt the second light emitters 1.221 on the positions near the rear frame of the left and right rear wheels of the test vehicle, respectively. The positions of the two second light emitters 1.221 match the positions of the second light receivers 1.222 on the same side, respectively, to ensure that the second light receivers 1.222 can capture the light signals emitted by the corresponding second light emitters 1.221 after the rear wheels of the vehicle pass over the bump 1.11. The control system 1.124 controls the lifting bracket 1.122 to rise or fall according to the preset bump reset program and stops at a suitable height to automatically reset the bump 1.11, so as to facilitate the next group of tests to be carried out directly;

[0099] S5. After completing multiple tests on a test vehicle, the test personnel remove the two first light emitters 1.211 and the two second light emitters 1.221 from the frame of the test vehicle, and re-bolt them to the corresponding positions on the frame of the next test vehicle, and start a new round of tests.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test device for a pulse input test of a vehicle ride comfort, characterized in that: The invention comprises two groups of photoelectrically controlled lifting cam assemblies (1), each group of photoelectrically controlled lifting cam assemblies (1) comprising a lifting cam assembly (1.1) and a photoelectric control assembly (1.2); the two groups of lifting cam assemblies (1.1) are fixed at intervals below the ground of a test site and correspond to the positions of the wheels on the left and right sides of a test vehicle; the tops of the two groups of lifting cam assemblies (1.1) are synchronously raised and lowered and stopped flush with or above the ground; each group of photoelectric control assemblies (1.2) is connected to the corresponding lifting cam assembly (1.1) by electrical signals; each group of photoelectric control assemblies (1.2) is respectively arranged on the ground of the test site and at corresponding positions on the frame of the test vehicle and can capture optical signals and convert them into electrical signals to control the lifting and stopping of the lifting cam assembly (1.1) to constitute the excitation of the front wheels and / or rear wheels of the test vehicle and the automatic resetting of the lifting cam assembly (1.1).

2. The test device for the automobile ride comfort pulse input test according to claim 1, characterized in that: Each group of the lifting block assemblies (1.1) comprises a block (1.11) and a lifting device (1.12), each block (1.11) being a rectangular block structure, two blocks (1.11) being arranged at a laterally spaced interval on the same straight line and corresponding to the positions of the left and right wheels of the test vehicle, each block (1.11) being fixedly connected to the top surface of the corresponding lifting device (1.12), the two lifting devices (1.12) being spaced and fixed under the ground of the test site, and the tops of the two lifting devices (1.12) being raised and lowered synchronously, and the top surfaces of the two blocks (1.11) being flush with the ground of the test site or being protruded above the ground of the test site at the same height.

3. The test device for the automobile ride comfort pulse input test according to claim 2, characterized in that: Each lifting device (1.12) comprises a lift, and each lift comprises a base (1.121), a lifting bracket (1.122), a driving device (1.123) and a control system (1.124); the lifting bracket (1.122) is telescopically connected to the base (1.121); the driving device (1.123) is transmission-connected to the lifting bracket (1.122); the control system (1.124) is electrically connected to the driving device (1.123); the top surface of the lifting bracket (1.122) is fixedly connected with a corresponding protrusion (1.11); the two lifting brackets (1.122) and the correspondingly connected protrusions (1.11) are synchronously raised and lowered and stopped; the two groups of photoelectric control components (1.2) are respectively connected to the corresponding control system (1.124) by electrical signals, and the lifting and stopping of the lifting bracket (1.122) are controlled by the control system (1.124).

4. The test device for the automobile ride comfort pulse input test according to claim 3, characterized in that: The lift is an electric cylinder lift.

5. The test device for the automobile ride comfort pulse input test according to claim 3 or 4, characterized in that: Each group of photoelectric control components (1.2) includes a first photoelectric sensor (1.21). The electrical signals of the two first photoelectric sensors (1.21) of the left and right groups of photoelectric control components (1.2) are connected to the corresponding control system (1.124). The components of the two first photoelectric sensors (1.21) are respectively arranged in the ground in front of the bump (1.11) of the test field and on the frame behind the front wheels of the test vehicle and can capture optical signals and convert them into electrical signals. After receiving the electrical signals, the control system (1.124) controls the lifting bracket (1.122) to rise and fall and stop, thereby stimulating the front wheels and / or rear wheels of the test vehicle.

6. The test device for the automobile ride comfort pulse input test according to claim 5, characterized in that: Each of the first photoelectric sensors (1.21) comprises a first light emitter (1.211) and a first light receiver (1.212); the two first light emitters (1.211) are respectively detachably fixedly connected to the vehicle frame behind the left and right front wheels of the test vehicle; the light emitting surface of each first light emitter (1.211) faces the ground; the two first light receivers (1.212) are respectively embedded in the ground in front of the corresponding protrusion (1.11) with their light receiving surfaces facing upward; the first light receiver (1.212) captures the light signal of the first light emitter (1.211) and converts it into an electrical signal and sends it to the control system (1.124) of the lift; the control system (1.124) controls the lifting bracket (1.122) to rise, fall and stop.

7. The test device for the automobile ride comfort pulse input test according to claim 6, characterized in that: Each group of photoelectric control components (1.2) also includes a second photoelectric sensor (1.22). The two second photoelectric sensors (1.22) of the left and right groups of photoelectric control components (1.2) are connected to the corresponding control system (1.124) through electrical signals. The two second photoelectric sensors (1.22) are respectively arranged on the ground in front of the bump (1.11) of the test site and on the corresponding positions of the frame behind the rear wheels of the test vehicle, and can capture optical signals and convert them into electrical signals. After receiving the electrical signals, the control system (1.124) controls the lifting bracket (1.122) to rise and fall and stop, thereby automatically resetting the bump (1.11).

8. The test device for the automobile ride comfort pulse input test according to claim 7, characterized in that: Each of the second photoelectric sensors (1.22) comprises a second light emitter (1.221) and a second light receiver (1.222). The two second light emitters (1.221) are respectively detachably fixedly connected to the frame behind the left and right rear wheels of the test vehicle. The light emitting surface of each second light emitter (1.221) faces the ground. The two second light receivers (1.222) are respectively embedded in the ground in front of the corresponding protrusion (1.11) with their light receiving surfaces facing upward. After the second light receiver (1.222 captures the light signal of the second light emitter (1.221), it converts it into an electrical signal and sends it to the control system (1.124) of the lift. The control system (1.124) controls the lifting bracket (1.122) to rise and fall to stop, thereby automatically resetting the protrusion (1.11).

9. The test device for the automobile ride comfort pulse input test according to claim 8, characterized in that: The length of each of the protrusions (1.11) matches the maximum width of the test vehicle wheel, and the height of each of the protrusions (1.11) protruding from the ground of the test field matches the height of the test vehicle wheel.

10. A method for using a test device for a pulse input test of a vehicle ride comfort, characterized in that: The steps include: S1. The two lifts are respectively fixedly installed under the ground at the starting point of the test. The installation positions of the two lifts are such that the two protrusions (1.11) fixed by bolts on the top surface of the lifts face the forward direction of the vehicle and are arranged horizontally in the same straight line, and the distance between the two protrusions (1.11) matches the interval between the left and right wheels of the test vehicle. A rectangular hole is opened on the ground at the corresponding position of the protrusion (1.11). The size and shape of the rectangular hole match the size and shape of the protrusion (1.11), so that the two protrusions (1.11) can move freely up and down in the rectangular hole without interference. When the two lifts are lowered to the lowest point, the top surfaces of the two protrusions (1.11) are flush with the ground of the test site; S2. A first light receiver (1.212) and a second light receiver (1.222) are respectively embedded and installed in the ground near the front of each convex block (1.11), the first light receiver (1.212) and the second light receiver (1.222) are arranged on the left and right, and the light receiving surfaces of the first light receiver (1.212) and the second light receiver (1.222) are both facing upwards; S3. First light emitters (1.211) are bolted to the positions adjacent to the rear frame of the left and right front wheels of the test vehicle. The positions of the two first light emitters (1.211) are matched with the positions of the first light receivers (1.212) on the same side and the light-emitting surfaces are downward, so as to ensure that the two first light receivers (1.212) can capture the light signals emitted by the corresponding first light emitters (1.211) after the front wheels of the vehicle pass over the bump (1.11) and convert them into electrical signals and send them to the control system (1.124). Before the test begins, the wheel excitation and bump reset programs are pre-set in the control system (1.124). After receiving the electrical signals, the control system (1.124) controls the lifting bracket (1.122) and the bump (1.11) to rise or fall according to the preset wheel excitation program and stops at a suitable height to excite the front wheels and / or rear wheels of the test vehicle. S4. The second light emitters (1.221) are bolted to the positions adjacent to the frame behind the left and right rear wheels of the test vehicle. The positions of the two second light emitters (1.221) are matched with the positions of the second light receivers (1.222) on the same side, respectively, to ensure that the second light receivers (1.222) can capture the light signals emitted by the corresponding second light emitters (1.221) after the rear wheels of the vehicle pass over the bump (1.11). The control system (1.124) controls the lifting bracket (1.122) to rise or fall according to the preset bump reset program and stops at a suitable height to automatically reset the bump (1.11), so as to facilitate the next group of tests to be carried out directly; S5. After completing multiple tests on a test vehicle, the test personnel remove the two first light emitters (1.211) and the two second light emitters (1.221) from the frame of the test vehicle, and re-bolt them to the corresponding positions on the frame of the next test vehicle, and start a new round of tests.

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