CN111780992A - Automobile dynamic performance simulation test system and method based on dynamic load - Google Patents
Automobile dynamic performance simulation test system and method based on dynamic load Download PDFInfo
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- CN111780992A CN111780992A CN202010685239.2A CN202010685239A CN111780992A CN 111780992 A CN111780992 A CN 111780992A CN 202010685239 A CN202010685239 A CN 202010685239A CN 111780992 A CN111780992 A CN 111780992A
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Abstract
The invention relates to an automobile dynamic performance simulation test system and method based on dynamic load, which comprises two blocking frames, a buffer plate, buffer columns, a blocking plate, a sliding frame, a follow-up mechanism and a buffer mechanism, wherein the blocking frames are symmetrically arranged in front and at the back, the left end of each blocking frame is of a hollow structure with an opening at the inner end, the right end of each blocking frame is internally provided with a buffer groove, the buffer plate is positioned in the hollow structure of the blocking frame, the right end of the buffer plate is connected in the buffer groove in a sliding fit mode, and the right side surface of the buffer plate is provided with the buffer columns. The invention can solve the problems existing in the prior art when the power performance of the vehicle is detected: the vehicle can take place flame-out's phenomenon because of transshipping when detecting for the vehicle can slide on the slope, thereby has certain potential safety hazard, and current generally blocks the piece and stops the vehicle through placing on the slope, can take place the hidden danger such as the vehicle can't stop or turn on one's side when vehicle inertia dynamics is great.
Description
Technical Field
The invention relates to the field of vehicle performance detection, in particular to an automobile dynamic performance simulation test system and method based on dynamic load.
Background
The automobile dynamic performance is the most basic and important performance of various performances of an automobile, and the automobile dynamic performance refers to the average running speed which can be reached and is determined by the longitudinal external force borne by the automobile when the automobile runs on a good road surface in a straight line; the dynamic performance of the truck is detected by loading the truck on an uphill road section.
The truck is generally parked on a slope road section when the truck performs dynamic performance detection, then the vehicle is controlled to run upwards at a constant speed along the slope, the load of the truck is gradually increased in the running process of the vehicle, so that the maximum load of the vehicle is obtained, and the problem existing when the vehicle performs dynamic performance detection is as follows:
the vehicle can take place flame-out's phenomenon because of transshipping when detecting for the vehicle can slide on the slope, thereby has certain potential safety hazard, and current generally blocks the piece and stops the vehicle through placing on the slope, can take place the hidden danger such as the vehicle can't stop or turn on one's side when vehicle inertia dynamics is great.
Disclosure of Invention
In order to solve the problems, the invention provides an automobile dynamic performance simulation test system based on dynamic load, which comprises two blocking frames, a buffer plate, buffer columns, blocking plates, a sliding frame, a follow-up mechanism and a buffer mechanism, wherein the blocking frames are symmetrically arranged in front and back, the left ends of the blocking frames are hollow structures with openings at the inner ends, the right ends of the blocking frames are internally provided with buffer grooves, the buffer plates are positioned in the hollow structures of the blocking frames, the right ends of the buffer plates are connected in the buffer grooves in a sliding fit manner, the right side surfaces of the buffer plates are provided with the buffer columns, the right ends of the buffer columns penetrate through the blocking frames, the outer side surfaces of the left ends of the buffer columns are provided with buffer springs, the buffer springs are arranged between the right side surfaces of the buffer plates and the right side walls of the buffer grooves, the inner side surfaces of the buffer plates are provided with square sliding grooves, the blocking plates are arranged in the square sliding grooves, the invention can buffer and protect the vehicle when the dynamic load is adopted to test the dynamic performance of the vehicle in a slope section, firstly, the blocking frames and the sliding frames are arranged at the front side and the rear side of the slope section, the buffer mechanism is contracted inwards and moved upwards by the buffer mechanism, so that the carriage position of the vehicle is moved to the lower part of the middle part of the moving frame, then the buffer mechanism is moved inwards, so that the inner end of the buffer mechanism can be abutted against the right side of the rear wheel of the vehicle, thereby playing a blocking role for the vehicle, and by adjusting the follow-up mechanism, make the lower extreme of follow-up mechanism can lock both ends about vehicle carriage lateral wall to follow-up mechanism can drive carriage and buffer gear and carry out synchronous movement, later open the vehicle and go left along the slope, and increase the load of vehicle gradually through outside crane along with vehicle synchronous movement at the vehicle in-process of traveling, can produce flameout phenomenon when the vehicle transships, can obtain the dynamic behavior of vehicle this moment, and buffer gear can block the buffering to flameout vehicle.
The servo mechanism comprises a guide support, elastic telescopic columns, guide clamps and adjusting bolts, the guide support is arranged on the lower side surface of the middle part of the moving frame, a square groove is arranged in the middle of the guide support, the front end and the rear end of the guide support are both of sliding telescopic structures, the bottom of each sliding telescopic structure on the guide support is connected with one elastic telescopic column, the guide clamps are arranged on the bottoms of the elastic telescopic columns, the guide clamps are U-shaped structures, the outer side walls of the guide clamps are connected with the adjusting bolts in a thread fit mode, during specific work, the servo mechanism can adjust the transverse position and the longitudinal position so that the guide clamp can be locked on the side walls of the carriage of vehicles with different heights and widths, the side wall of the carriage of the vehicle is clamped by screwing the adjusting bolt, so that the vehicle can drive the follow-up mechanism to move when moving.
The buffer mechanism comprises a connecting frame, a multi-stage adjusting column and a blocking seat, the outer end of the connecting frame is connected to the inner side surface of the outer end of the moving frame, the multi-stage adjusting column is of a multi-stage telescopic structure, the right side surface of the lower end of the connecting frame is connected with the fixed end of the multi-stage adjusting column, the blocking seat is mounted on the telescopic end of the multi-stage adjusting column, when the buffer mechanism works, the blocking seat can block the vehicle when the vehicle is parked on a slope, and can also buffer and block the vehicle when the vehicle is flamed out due to overload, therefore, the safety of the invention is improved when the vehicle is tested, the position of the stop block can be adjusted through the multi-stage adjusting columns, when the vehicle needs to run to the initial detection position, the multistage adjusting columns are controlled to shrink, the blocking seat is prevented from influencing the movement of the vehicle, and the multistage adjusting columns are controlled to extend after the vehicle runs in place, so that the blocking seat can abut against the right side of the rear tire of the vehicle.
As a preferred technical scheme of the invention, the inner side surface of the blocking plate is uniformly provided with blocking teeth with triangular structures, the left side surface of each blocking tooth is a plane, the inner side surface of each multi-stage adjusting column is provided with triangular teeth matched with the blocking teeth, the triangular structures of the blocking teeth and the triangular teeth can not block the leftward movement of a vehicle, when the vehicle is extinguished due to overload and slides down from a slope, the vehicle can drive the multi-stage adjusting columns to move synchronously, the triangular teeth can be blocked by the blocking teeth, the inertia generated by the vehicle can drive the buffer plate to move rightwards through the blocking plate, and the buffer spring can contract to buffer the vehicle, so that the vehicle can stop, and the safety of the invention is improved.
As a preferable technical scheme of the invention, the height of the left end of the buffer plate is greater than that of the right end of the buffer plate, the right end of the buffer plate is provided with the inclined groove, the inclined groove of the buffer plate is provided with the rubber pad, and the rubber pad arranged on the inclined groove of the buffer plate can be clamped on the lower side wall of the buffer groove when the impact force of a vehicle is large, so that the vehicle is buffered, and the buffering effect of the vehicle buffer device on the vehicle is improved.
As a preferred technical scheme of the invention, the connecting frame comprises a follow-up supporting rod, a connecting block, a sliding column and a sliding spring, the outer side of the upper end of the follow-up supporting rod is connected to the moving frame, the right side surface of the lower end of the follow-up supporting rod is provided with a counter bore, the left end of the sliding column is connected in the counter bore in a sliding fit mode, the right end of the sliding column is connected with the left side surface of the connecting block, the right side surface of the connecting block is arranged on the multistage adjusting column, the outer side of the sliding column is provided with the sliding spring, the sliding spring is arranged between the follow-up supporting rod and the connecting block, the telescopic force of the sliding spring is smaller than that of the buffer spring, the telescopic force of the sliding spring is larger than that of the blocking spring, when the sliding frame is in a static state, the sliding frame drives the triangular teeth to abut against the blocking teeth under the action of gravity, and enables, the sliding spring can extend and move, so that the blocking seat is separated from the rear tire of the vehicle, the blocking seat is prevented from influencing the driving of the vehicle, when the vehicle slips down from the slope in a flameout mode, the telescopic force of the sliding spring is smaller than the telescopic force of the buffer spring, so that the sliding spring can contract first, the rear tire of the vehicle can be in contact with the blocking seat, and then the buffer spring and the rubber pad on the inclined groove can buffer the vehicle, so that the vehicle can stop.
As a preferred technical scheme of the present invention, the bottom of the fixed end of the multi-stage adjusting column is provided with a supporting roller, the left side surface of the blocking seat is provided with an arc-shaped groove which is obliquely arranged, the supporting roller can support and support the multi-stage adjusting column so as to increase the stability of the multi-stage adjusting column, and the arc-shaped groove of the blocking seat can increase the blocking effect of the blocking seat on the vehicle.
As a preferable technical scheme of the invention, a flexible pad is arranged on the inner side surface of the inner end of the guide clamp, a disc is arranged on the inner end of the adjusting bolt, and the effect of the invention on locking the vehicle can be increased by matching the flexible pad of the guide clamp with the disc on the adjusting bolt.
The method for testing the dynamic performance of the automobile by adopting the dynamic load-based automobile dynamic performance simulation test system comprises the following steps:
firstly, blocking a frame for locking: firstly, mounting a blocking frame and a sliding frame on the front side and the rear side of a test slope section, and moving a carriage of a vehicle to the lower part of the middle part of a moving frame by retracting a multi-stage adjusting column and moving an elastic telescopic column upwards;
step two, blocking the vehicle position: when the sliding frame is in a static state, the sliding frame drives the triangular teeth to abut against the blocking teeth under the action of gravity, the sliding spring is made to shrink to a certain degree, then the multistage adjusting columns are controlled to extend to move, so that the initial position of the vehicle is blocked by the blocking seat, the guiding clamp is clamped on the side wall of the carriage of the vehicle, the side wall of the carriage of the vehicle is clamped by screwing the adjusting bolt, and therefore the sliding frame, the follower mechanism and the buffer mechanism can be driven to move synchronously when the vehicle moves;
step three, vehicle running: the vehicle is controlled to run leftwards along the slope road section, the load of the vehicle is gradually increased through a crane which synchronously moves with the vehicle from the outside in the running process of the vehicle, the triangular structure of the blocking teeth and the triangular teeth can not block the vehicle from moving leftwards, and when the vehicle runs leftwards, the sliding spring can perform extension movement, so that the blocking seat is separated from a rear tire of the vehicle, and the blocking seat is prevented from influencing the running of the vehicle;
fourthly, vehicle protection: when the vehicle is overloaded, a flameout phenomenon can be generated, the power performance of the vehicle can be obtained, the vehicle can slide leftwards on a slope after flameout, the telescopic force of the sliding spring is smaller than the telescopic force of the buffer spring, so that the sliding spring can contract firstly, the rear tire of the vehicle can be contacted with the blocking seat, the vehicle can be buffered in a first-stage mode due to the contraction of the sliding spring, inertia generated by the vehicle can drive the buffer plate to move rightwards through the blocking plate, the buffer spring can contract to buffer the vehicle in a second-stage mode, and when the impact force of the vehicle is large, the rubber pads arranged on the inclined grooves of the buffer plate can be clamped on the lower side wall of the buffer groove, so that the vehicle can be buffered in a third-stage mode, the buffer effect of the vehicle buffer device on.
The invention has the beneficial effects that:
the buffer mechanism can move synchronously with the vehicle, and triple buffer protection is carried out when the vehicle slides down the slope, so that the buffer effect of the buffer mechanism on the vehicle is improved;
the flexible pad of the guide clamp is matched with the disc on the adjusting bolt, so that the effect of locking the guide clamp on the vehicle can be improved, and the follow-up mechanism can drive the sliding frame and the buffer mechanism to synchronously move along with the vehicle;
the triangular structures of the blocking teeth and the triangular teeth can not prevent the vehicle from moving leftwards, when the vehicle is extinguished due to overload and slides down from a slope, the vehicle can drive the multi-stage adjusting columns to move synchronously, the triangular teeth can be blocked by the blocking teeth, inertia generated by the vehicle can drive the buffer plate to move rightwards through the blocking plate, and the buffer spring can contract so as to buffer the vehicle;
and fourthly, the rubber pad arranged on the inclined groove can be clamped on the lower side wall of the buffer groove so as to buffer the vehicle with larger impact force, and the buffering effect of the vehicle buffer device on the vehicle is further improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a first configuration of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of the present invention between the blocking frame, the blocking plate and the sliding frame;
FIG. 4 is a cross-sectional view between the barrier frame and the buffer plate according to the present invention;
FIG. 5 is a cross-sectional view of the present invention between the connecting bracket, the multi-stage adjustment post and the support roller;
fig. 6 is a schematic structural diagram of the buffer protection during vehicle detection according to the invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a dynamic load-based automobile dynamic performance simulation test system comprises two blocking frames 1, two buffer plates 2, two buffer columns 3, two blocking plates 4, two sliding frames 5, two sliding frames 6, two following mechanisms 7 and two buffer mechanisms 8, wherein the blocking frames 1 are symmetrically arranged in front and back, the left end of each blocking frame 1 is of a hollow structure with an opening at the inner end, a buffer slot 11 is arranged in the right end of each blocking frame 1, the buffer plates 2 are positioned in the hollow structures of the blocking frames 1, the right ends of the buffer plates 2 are connected in the buffer slots 11 in a sliding fit manner, the buffer columns 3 are mounted on the right side surfaces of the buffer plates 2, the right ends of the buffer columns 3 penetrate through the blocking frames 1, the buffer springs 31 are arranged on the outer side surfaces of the left ends of the buffer columns 3, the buffer springs 31 are mounted between the right side surfaces of the buffer plates 2 and the right side walls of the buffer slots 11, square sliding slots 21 are arranged on the inner side surfaces of the buffer plates 2, the invention can buffer and protect the vehicle when testing the dynamic performance of the vehicle by adopting dynamic load on the vehicle in a slope section, firstly, the blocking frame 1 and the sliding frame 5 are arranged at the front side and the rear side of the tested slope section, the buffer mechanism 8 is retracted inwards and the follow-up mechanism 7 is moved upwards by the buffer mechanism 8, so that the carriage position of the vehicle is moved to the lower part of the middle part of the moving frame 6, and then the buffer mechanism 8 is moved inwards, so that buffer gear 8's inner can support wheel right side behind the vehicle, thereby play the effect of blockking to the vehicle, through adjusting servo mechanism 7, make servo mechanism 7's lower extreme can lock both ends about vehicle carriage lateral wall, so that servo mechanism 7 can drive carriage 6 and buffer gear 8 and carry out synchronous motion, later open the vehicle and travel left along the slope, and go the in-process at the vehicle and increase the load of vehicle gradually along with vehicle synchronous motion's loop wheel machine through the outside, can produce flameout phenomenon when the vehicle transships, can reach the power performance of vehicle this moment, buffer gear 8 can block the buffering to flameout vehicle.
The height of the left end of the buffer plate 2 is larger than that of the right end of the buffer plate, the chute 23 is arranged at the right end of the buffer plate 2, the rubber pad is arranged on the chute 23 of the buffer plate 2, and when the impact force of a vehicle is large, the rubber pad arranged on the chute 23 of the buffer plate 2 can be clamped on the lower side wall of the buffer groove 11, so that the vehicle is buffered, and the buffering effect of the vehicle buffer device on the vehicle is improved.
The follow-up mechanism 7 comprises a guide support 71, elastic telescopic columns 72, guide clips 73 and adjusting bolts 74, wherein the guide support 71 is installed on the lower side surface of the middle part of the movable frame 6, a square groove is formed in the middle part of the guide support 71, the front end and the rear end of the guide support 71 are both of sliding telescopic structures, the bottom of each sliding telescopic structure on the guide support 71 is connected with one elastic telescopic column 72, the guide clips 73 are installed on the bottoms of the elastic telescopic columns 72, each guide clip 73 is of a U-shaped structure, the outer side wall of each guide clip 73 is connected with the corresponding adjusting bolt 74 in a threaded fit mode, during specific work, the follow-up mechanism 7 can adjust the transverse position and the longitudinal position so that the guide clips 73 can be locked on the side walls of carriages of vehicles with different heights and widths, and the side walls of the carriages of the vehicles can be clamped by screwing the adjusting bolts 74, therefore, the vehicle can drive the follow-up mechanism 7 to move when moving.
The inner side surface of the inner end of the guide clamp 73 is provided with a flexible pad, the inner end of the adjusting bolt 74 is provided with a disc, and the effect of locking the automobile seat lock disclosed by the invention on an automobile can be increased by matching the flexible pad of the guide clamp 73 with the disc on the adjusting bolt 74.
The buffer mechanism 8 comprises a connecting frame 81, a multi-stage adjusting column 82 and a blocking seat 83, the outer end of the connecting frame 81 is connected to the inner side surface of the outer end of the movable frame 6, the multi-stage adjusting column 82 is of a multi-stage telescopic structure, the right side surface of the lower end of the connecting frame 81 is connected with the fixed end of the multi-stage adjusting column 82, the blocking seat 83 is installed at the telescopic end of the multi-stage adjusting column 82, when the buffer mechanism works specifically, the blocking seat 83 can block a vehicle when the vehicle is parked on a slope, and the blocking seat 83 can also buffer and block the vehicle when the vehicle is flamed out due to overload, so that the safety of the buffer mechanism during vehicle test is improved, the position of the blocking seat 83 can be adjusted through the multi-stage adjusting column 82, when the vehicle needs to run to a detection initial position, the multi-stage adjusting column 82 is controlled to shrink, the blocking seat 83 is prevented from, so that the stopper 83 can abut against the right side of the rear tire of the vehicle.
The inner side surface of the blocking plate 4 is uniformly provided with blocking teeth 41 with triangular structures, the left side surface of each blocking tooth 41 is a plane, the inner side surface of each multi-stage adjusting column 82 is provided with triangular teeth 84 matched with the corresponding blocking teeth 41, the triangular structures of the blocking teeth 41 and the triangular teeth 84 can not prevent a vehicle from moving leftwards, when the vehicle is extinguished due to overload and slides down from a slope, the vehicle can drive the multi-stage adjusting columns 82 to move synchronously, the triangular teeth 84 can be blocked by the blocking teeth 41, inertia generated by the vehicle can drive the buffer plate 2 to move rightwards through the blocking plate 4, and the buffer spring 31 can contract to buffer the vehicle, so that the vehicle can be stopped, and the safety of the invention is improved.
The connecting frame 81 comprises a follow-up supporting rod 811, a connecting block 812, a sliding column 813 and a sliding spring 814, wherein the outer side of the upper end of the follow-up supporting rod 811 is connected to the moving frame 6, a counter bore is arranged on the right side surface of the lower end of the follow-up supporting rod 811, the left end of the sliding column 813 is connected in the counter bore in a sliding fit mode, the right end of the sliding column 813 is connected with the left side surface of the connecting block 812, the right side surface of the connecting block 812 is installed on the multistage adjusting column 82, the sliding spring 814 is arranged on the outer side of the sliding column 813, the sliding spring 814 is installed between the follow-up supporting rod 811 and the connecting block 812, the expansion force of the sliding spring 814 is smaller than that of the buffer spring 31, the expansion force of the sliding spring 814 is larger than that of the blocking spring 22, when the sliding frame 6 is in a static state, the sliding frame 6 drives the triangular teeth 84 to, when the following mechanism 7 is locked on the vehicle and the vehicle runs leftwards, the sliding spring 814 can perform extension movement, so that the blocking seat 83 is separated from the rear tire of the vehicle, the influence of the blocking seat 83 on the running of the vehicle is prevented, when the vehicle is flamed out and slides down from a slope, the telescopic force of the sliding spring 814 is smaller than the telescopic force of the buffer spring 31, so that the sliding spring 814 can contract firstly, the rear tire of the vehicle can be in contact with the blocking seat 83, and then the buffer spring 31 and the rubber pad on the inclined groove 23 can buffer the vehicle, so that the vehicle can stop.
The bottom of the stiff end of multistage regulation post 82 on be provided with supporting roller 85, block the arc wall that is provided with the slope on the left surface of seat 83 and arranges, supporting roller 85 can support the support to multistage regulation post 82 to increase the stability of multistage regulation post 82, the arc wall that blocks seat 83 can increase its effect of blockking to the vehicle.
The method for testing the dynamic performance of the automobile by adopting the dynamic load-based automobile dynamic performance simulation test system comprises the following steps:
firstly, locking a blocking frame 1: firstly, installing the blocking frame 1 and the sliding frame 5 at the front side and the rear side of a tested slope section, and moving the carriage position of the vehicle to the lower part of the middle part of the movable frame 6 by retracting the multi-stage adjusting columns 82 and moving the elastic telescopic columns 72 upwards;
step two, blocking the vehicle position: when the sliding frame 6 is in a static state, the sliding frame 6 drives the triangular teeth 84 to abut against the blocking teeth 41 under the action of gravity, the sliding spring 814 contracts to a certain extent, then the multistage adjusting column 82 is controlled to extend, so that the blocking seat 83 blocks the initial position of the vehicle, the guide clamp 73 is clamped on the side wall of the compartment of the vehicle, the side wall of the compartment of the vehicle is clamped by screwing the adjusting bolt 74, and the sliding frame 6, the follow-up mechanism 7 and the buffer mechanism 8 can be driven to synchronously move when the vehicle moves;
step three, vehicle running: the vehicle is controlled to run leftwards along the slope road section, the load of the vehicle is gradually increased through a crane which synchronously moves with the vehicle from the outside in the running process of the vehicle, the triangular structures of the blocking teeth 41 and the triangular teeth 84 can not block the leftward movement of the vehicle, and when the vehicle runs leftwards, the sliding spring 814 can perform extension movement, so that the blocking seat 83 is separated from a rear tire of the vehicle, and the influence of the blocking seat 83 on the running of the vehicle is prevented;
fourthly, vehicle protection: when the vehicle is overloaded, a flameout phenomenon can occur, at the moment, the power performance of the vehicle can be obtained, the vehicle can slide leftwards on a slope after flameout, the telescopic force of the sliding spring 814 is smaller than the telescopic force of the buffer spring 31, so that the sliding spring 814 can contract first, the rear tire of the vehicle can be in contact with the blocking seat 83, the sliding spring 814 can buffer the vehicle in a first stage after contraction, inertia generated by the vehicle can drive the buffer plate 2 to move rightwards through the blocking plate 4, the buffer spring 31 can contract so as to buffer the vehicle in a second stage, when the impact force of the vehicle is large, a rubber pad arranged on the inclined groove 23 of the buffer plate 2 can be clamped on the lower side wall of the buffer groove 11, so that the vehicle can be buffered in a third stage, the buffer effect of the invention on the vehicle is increased, and the.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an automobile dynamic performance simulation test system based on dynamic load, includes stop frame (1), buffer board (2), cushion column (3), barrier plate (4), sliding frame (5), carriage (6), servo mechanism (7) and buffer gear (8), its characterized in that: the number of the blocking frames (1) is two, the blocking frames (1) are symmetrically arranged in the front and back direction, the left end of each blocking frame (1) is of a hollow structure with an inner end opening, a buffer groove (11) is arranged in the right end of each blocking frame (1), the buffer plate (2) is located in the hollow structure of each blocking frame (1), the right end of the buffer plate (2) is connected into the buffer groove (11) in a sliding fit mode, a buffer column (3) is installed on the right side face of the buffer plate (2), the right end of the buffer column (3) penetrates through the blocking frames (1), a buffer spring (31) is arranged on the outer side face of the left end of the buffer column (3), the buffer spring (31) is installed between the right side face of the buffer plate (2) and the right side wall of the buffer groove (11), a square sliding groove (21) is arranged on the inner side face of the buffer plate (2), and a blocking plate (4) is installed in the square sliding groove (21), the outer side surface of each blocking frame (1) is provided with a sliding frame (5), the upper side surface of each sliding frame (5) is provided with a T-shaped sliding groove, the sliding frame (6) is of a U-shaped structure, the lower end of each sliding frame (6) is arranged on the T-shaped sliding grooves of the two sliding frames (5), the lower side surface of the middle part of each sliding frame (6) is provided with a servo mechanism (7), and the left end and the right end of each sliding frame (6) are respectively provided with a buffer mechanism (8); wherein:
the follow-up mechanism (7) comprises a guide support (71), elastic telescopic columns (72), guide clamps (73) and adjusting bolts (74), wherein the guide support (71) is installed on the lower side surface of the middle part of the sliding frame (6), the front end and the rear end of the guide support (71) are of sliding telescopic structures, the bottom of each sliding telescopic structure on the guide support (71) is connected with one elastic telescopic column (72), the guide clamps (73) are installed on the bottom of the elastic telescopic columns (72), the guide clamps (73) are of U-shaped structures, and the outer side walls of the guide clamps (73) are connected with the adjusting bolts (74) in a threaded fit mode;
buffer gear (8) including link (81), multistage regulation post (82) and block seat (83), the outer end of link (81) is connected on the outer end medial surface of carriage (6), multistage regulation post (82) are multistage extending structure, the lower extreme right flank of link (81) is connected with the stiff end of multistage regulation post (82), the flexible end of multistage regulation post (82) is served and is installed and block seat (83).
2. The dynamic load-based automobile dynamic performance simulation test system according to claim 1, wherein: the inner side surface of the blocking plate (4) is uniformly provided with blocking teeth (41) with triangular structures, the left side surface of each blocking tooth (41) is a plane, and the inner side surface of each multi-stage adjusting column (82) is provided with triangular teeth (84) matched with the blocking teeth (41).
3. The dynamic load-based automobile dynamic performance simulation test system according to claim 2, wherein: the height of buffer board (2) left end be greater than the height of its right-hand member, the right-hand member of buffer board (2) is provided with chute (23), is provided with the rubber pad on chute (23) of buffer board (2).
4. The dynamic load-based automobile dynamic performance simulation test system according to claim 3, wherein: connecting frame (81) include follow-up branch (811), connecting block (812), slip post (813) and sliding spring (814), the upper end outside of follow-up branch (811) is connected on carriage (6), be provided with the counter bore on the lower extreme right flank of follow-up branch (811), the left end of slip post (813) is connected in the counter bore through sliding fit's mode, the right-hand member of slip post (813) is connected with the left surface of connecting block (812), the right flank of connecting block (812) is installed on multistage regulation post (82), the outside of slip post (813) is provided with sliding spring (814), sliding spring (814) are installed between follow-up branch (811) and connecting block (812).
5. The dynamic load-based automobile dynamic performance simulation test system according to claim 1, wherein: the bottom of the fixed end of the multi-stage adjusting column (82) is provided with a supporting roller (85), and the left side surface of the blocking seat (83) is provided with an arc-shaped groove which is obliquely arranged.
6. The dynamic load-based automobile dynamic performance simulation test system according to claim 1, wherein: the inner side surface of the inner end of the guide clamp (73) is provided with a flexible pad, and the inner end of the adjusting bolt (74) is provided with a disc.
7. The dynamic load-based automobile dynamic performance simulation test system according to claim 3, wherein: the method for testing the dynamic performance of the automobile by using the automobile dynamic performance simulation test system comprises the following steps:
firstly, locking a blocking frame (1): firstly, a blocking frame (1) and a sliding frame (5) are arranged on the front side and the rear side of a tested slope section, and the multi-stage adjusting columns (82) are contracted and the elastic telescopic columns (72) are moved upwards, so that the carriage position of a vehicle is moved to the lower part of the middle part of a moving frame (6);
step two, blocking the vehicle position: when the sliding frame (6) is in a static state, the sliding frame (6) drives the triangular teeth (84) to abut against the blocking teeth (41) under the action of gravity, the sliding spring (814) is made to contract to a certain degree, then the multi-stage adjusting column (82) is controlled to extend, so that the initial position of the vehicle is blocked by the blocking seat (83), the guide clamp (73) is clamped on the side wall of the compartment of the vehicle, the side wall of the compartment of the vehicle is clamped by screwing the adjusting bolt (74), and the sliding frame (6), the follow-up mechanism (7) and the buffer mechanism (8) can be driven to synchronously move when the vehicle moves;
step three, vehicle running: the vehicle is controlled to run leftwards along the slope section, the load of the vehicle is gradually increased through a crane which synchronously moves with the vehicle from the outside in the running process of the vehicle, the triangular structures of the blocking teeth (41) and the triangular teeth (84) can not block the leftward movement of the vehicle, and when the vehicle runs leftwards, the sliding spring (814) can perform extension movement, so that the blocking seat (83) is separated from a rear tire of the vehicle, and the blocking seat (83) is prevented from influencing the running of the vehicle;
fourthly, vehicle protection: when the vehicle is overloaded, the phenomenon of flameout can be generated, the dynamic performance of the vehicle can be obtained at the moment, the vehicle can slide leftwards on a slope after flameout, the telescopic force of the sliding spring (814) is smaller than that of the buffer spring (31), so that the sliding spring (814) can contract firstly, so that the rear tire of the vehicle can be contacted with the blocking seat (83), the sliding spring (814) can perform primary buffering on the vehicle by contraction, the inertia generated by the vehicle can drive the buffer plate (2) to move rightwards by the blocking plate (4), the buffer spring (31) can contract so as to perform secondary buffering on the vehicle, when the impact force of the vehicle is large, the rubber pad arranged on the inclined groove (23) of the buffer plate (2) can be clamped on the lower side wall of the buffer groove (11), therefore, the vehicle is subjected to three-level buffering, the buffering effect of the vehicle is increased, and the vehicle can be stably stopped.
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