CN112113772A - Chassis dynamic and static space verification test bed - Google Patents
Chassis dynamic and static space verification test bed Download PDFInfo
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- CN112113772A CN112113772A CN201910540496.4A CN201910540496A CN112113772A CN 112113772 A CN112113772 A CN 112113772A CN 201910540496 A CN201910540496 A CN 201910540496A CN 112113772 A CN112113772 A CN 112113772A
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Abstract
The invention relates to the technical field of automobile testing, in particular to a chassis dynamic and static space verification test bed. This test bench includes: a rack base plate; the lifting fixing mechanism is arranged on the base plate of the rack and used for controlling the test vehicle to do lifting motion relative to the base plate of the rack and fixing the vehicle body of the test vehicle; the wheel jump control mechanism is arranged on the base plate of the rack and used for driving wheels of the test vehicle to move along the vertical direction; the wheel center loading mechanism is arranged on the base plate of the rack and used for driving wheels of the test vehicle to move along the horizontal direction; the steering control mechanism is arranged on the test vehicle and used for controlling a steering wheel of the test vehicle to drive wheels of the test vehicle to rotate; and the main control mechanism is used for controlling the wheel jump control mechanism, the wheel center loading mechanism and the steering control mechanism to complete the dynamic and static space verification of the chassis when the lifting fixing mechanism lifts and fixes the test vehicle. The test bed can shorten the test period of the chassis dynamic and static space verification and reduce the test cost.
Description
Technical Field
The invention relates to the technical field of automobile testing, in particular to a chassis dynamic and static space verification test bed.
Background
The chassis dynamic and static space verification is the most basic part in the chassis design and has more important influence on the cycle and the cost of the whole vehicle development. The current chassis dynamic and static space verification mainly depends on a whole vehicle road test, and a professional driver needs to perform a driving test on a professional whole vehicle test yard. The whole vehicle road test mode has the following defects: firstly, the road conditions of the parking lot are fixed, so that the requirements of different vehicle types cannot be met, for example, the road conditions required by the SUV are severe, and the road conditions required by the car are relatively mild; secondly, the test period is long, the test cost is high, and for example, the rent of a test field and the labor cost of a driver are high; thirdly, the test result has limitations, is limited by the limitations of the test yard site, the driving habits and the emergencies of the driver, may cause deviation to the test result, and has the problem of insufficient verification.
Disclosure of Invention
In order to solve the problems in the process of verifying the dynamic and static space of the chassis by adopting a whole vehicle road test mode, the invention provides a chassis dynamic and static space verification test bed which is used for verifying the dynamic and static space of the chassis so as to shorten the test period, reduce the test cost and improve the comprehensiveness of the verification result.
The invention provides a chassis dynamic and static space verification test bed, which comprises:
a rack base plate;
the lifting fixing mechanism is arranged on the rack bottom plate and used for controlling the test vehicle to do lifting motion relative to the rack bottom plate and fixing the vehicle body of the test vehicle;
the wheel jump control mechanism is arranged on the bottom plate of the rack and used for driving wheels of the test vehicle to move along the vertical direction;
the wheel center loading mechanism is arranged on the bottom plate of the rack and used for driving wheels of the test vehicle to move along the horizontal direction;
the steering control mechanism is arranged on the test vehicle and used for controlling a steering wheel of the test vehicle to drive wheels of the test vehicle to rotate;
and the main control mechanism is connected with the wheel hop control mechanism, the wheel center loading mechanism and the steering control mechanism and is used for controlling the wheel hop control mechanism, the wheel center loading mechanism and the steering control mechanism to complete chassis dynamic and static space verification when the lifting fixing mechanism lifts and fixes the test vehicle.
Preferably, the lifting fixing mechanism includes:
the lifting control assembly is arranged on the rack bottom plate and used for controlling the test vehicle to do lifting motion relative to the rack bottom plate;
and the fixing assembly is arranged on the lifting control assembly and used for fixing the body of the test vehicle.
Preferably, the lifting control assembly comprises a support column arranged on the platform base plate, a support flat plate arranged on the support column and lifting power equipment connected with the support flat plate, wherein the support flat plate is driven by the lifting power equipment to move axially along the support column so as to control the test vehicle placed on the support flat plate to do lifting motion relative to the platform base plate.
Preferably, the fixing assembly comprises a rail clamping assembly arranged on the support plate and used for clamping a frame rail of the test vehicle.
Preferably, the longitudinal beam clamping assembly comprises a clamping plate base arranged on the supporting flat plate, a clamping screw rod arranged on the clamping plate base, a clamping plate sliding block connected with the clamping screw rod and a flanging clamping plate arranged on the supporting flat plate, the clamping screw rod is used for adjusting the distance between the clamping plate sliding block and the flanging clamping plate, and the clamping plate sliding block is matched with the flanging clamping plate to clamp the frame longitudinal beam of the test vehicle.
Preferably, the wheel-jump control mechanism comprises a wheel-jump control assembly arranged on the base plate of the rack, and the wheel-jump control assembly is arranged below the lifted wheel of the test vehicle and used for applying a vertical force to the wheel of the test vehicle so as to control the wheel of the test vehicle to move in the vertical direction.
Preferably, the wheel jump control assembly comprises a first fixing piece arranged on the base plate of the rack, a tray arranged on the first fixing piece and wheel jump power equipment connected with the tray, wherein the tray is arranged below wheels of the test vehicle and used for moving in the vertical direction under the driving of the wheel jump power equipment to apply vertical force to the wheels of the test vehicle so as to control the wheels of the test vehicle to move in the vertical direction.
Preferably, the first fixing piece comprises a fixing piece body and a hydraulic sealing piece, the fixing piece body and the hydraulic sealing piece are matched to form a sealing chamber, and the hydraulic sealing piece is connected with the tray and used for controlling the tray to move in the vertical direction according to a hydraulic value in the sealing chamber;
the wheel jump power equipment is a hydraulic control system, and the hydraulic control system is connected with the sealed cavity through a hydraulic hose and is used for adjusting a hydraulic value in the sealed cavity.
Preferably, the wheel center loading mechanism comprises a second fixing piece arranged on the base plate of the rack, an actuator arranged on the second fixing piece and wheel center power equipment connected with the actuator, wherein the actuator is arranged opposite to the wheel center of the wheel of the test vehicle and is used for moving in the horizontal direction under the driving of the wheel center power equipment and applying a force in the horizontal direction to the wheel of the test vehicle so as to control the wheel of the test vehicle to move in the horizontal direction.
Preferably, the steering control mechanism comprises a fixed jaw for connecting a steering wheel of the test vehicle, a driving motor for providing driving force, a universal joint for connecting the fixed jaw with the driving motor, a motor fixing support for fixing the driving motor, two steering fixing supports for clamping a door of the test vehicle, and a connecting shaft assembly for connecting the two steering fixing supports with the motor fixing support.
The chassis dynamic and static space verification test bed provided by the invention can lift and fix a test vehicle through the lifting fixing mechanism when the test vehicle is positioned at a specific position of the base plate of the rack, so that wheels of the test vehicle are suspended, other tools such as a wheel jump control mechanism and a wheel center loading mechanism are convenient to install, and the test vehicle is kept stable. The main control mechanism controls the wheel jump control mechanism, the wheel center loading mechanism and the steering control mechanism to work so that the wheel movement of the test vehicle covers all possible working conditions in all roads, thereby achieving the purpose of simulating different road conditions and ensuring that the test can meet the requirements of different vehicles; moreover, the main control mechanism controls the steering control mechanism to simulate a driver to drive a test vehicle, which can help to reduce the test cost and improve the test efficiency, shorten the test period and improve the test comprehensiveness, and avoid the deviation of the test result caused by the driving habits and emergencies of the driver, thereby ensuring the sufficiency of the verification result.
Drawings
FIG. 1 is a schematic view of a chassis dynamic and static space verification test bed according to an embodiment of the invention;
FIG. 2 is a schematic view of a lift fixture according to an embodiment of the present invention;
FIG. 3 is a schematic view of a steering control mechanism in accordance with an embodiment of the present invention.
10, a rack bottom plate; 20. a lifting fixing mechanism; 21. a lift control assembly; 211. supporting the upright post; 212. supporting the flat plate; 22. a stringer clamping assembly; 221. a clamp plate base; 222. clamping the screw rod; 223. a clamp plate slide block; 224. a flanging splint; 30. a wheel hop control mechanism; 31. a wheel hop control assembly; 311. a first fixing member; 312. a tray; 313. a wheel-jump power plant; 314. a hydraulic hose; 315. installing a slide rail; 40. a wheel center loading mechanism; 41. a second fixing member; 42. an actuator; 50. a steering control mechanism; 51. fixing the clamping jaw; 52. a drive motor; 53. a universal joint; 54. a motor fixing support; 55. a steering fixing bracket; 56. a connecting shaft assembly; 60. and a main control mechanism.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 shows a chassis dynamic and static space verification test bed in an embodiment of the present invention, which is used for a test vehicle to perform chassis dynamic and static space verification, and external forces in different directions are provided to wheels of the test vehicle to move the test vehicle in corresponding directions, so as to achieve the purpose of simulating different road conditions and meet the requirements of different vehicles; moreover, the chassis dynamic and static space verification test bed is used for testing, so that the test cost can be reduced (for example, rent of a test field and labor cost of a driver can be saved), the test efficiency is improved, the test period is shortened, and the test comprehensiveness is improved. The test vehicle in the embodiment refers to a vehicle needing chassis dynamic and static space verification.
As shown in fig. 1, the chassis dynamic and static space verification test bed comprises a bed bottom plate 10, a lifting fixing mechanism 20, a wheel jump control mechanism 30, a wheel center loading mechanism 40, a steering control mechanism 50 and a main control mechanism 60.
And the platform base plate 10 is placed on the ground and used for installing the lifting fixing mechanism 20, the wheel jump control mechanism 30 and the wheel center loading mechanism 40. Because this chassis sound attitude space verification test bench is the equipment that is used for carrying on vehicle chassis sound attitude space verification, and the test vehicle is heavier, needs to guarantee that this rack bottom plate 10 has better bearing capacity, consequently, this rack bottom plate 10 can adopt iron or other metal material preparation to form.
Further, in order to facilitate the installation of the lifting fixing mechanism 20, the wheel hop control mechanism 30 and the wheel center loading mechanism 40 on the platform base plate 10, a plurality of strip-shaped first grooves (not shown in the figure) may be arranged on the upper surface of the platform base plate 10 at intervals in parallel, and the strip-shaped first grooves may be formed by stamping when the platform base plate 10 is manufactured, so as to facilitate the wiring or the installation of other mechanisms.
And the lifting fixing mechanism 20 is arranged on the platform base plate 10 and used for controlling the test vehicle to do lifting movement relative to the platform base plate 10 and fixing the vehicle body of the test vehicle. Specifically, the lifting fixing mechanism 20 is mounted on the rack base plate 10, and is configured to control the test vehicle to perform a lifting motion relative to the rack base plate 10 through the lifting fixing mechanism 20 when the test vehicle drives to a specific area of the rack base plate 10, so as to lift to a specific height (for example, 0-2m), and fix the body of the test vehicle, so as to ensure that the body of the test vehicle is stable when wheels of the test vehicle receive external forces in different directions and move in corresponding directions through the wheel hop control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50, so as to achieve the purpose of chassis dynamic and static space verification; after the verification of the dynamic and static space of the chassis is finished, the lifting fixing mechanism 20 controls the test vehicle to do descending motion relative to the rack bottom plate 10, so that the test vehicle is parked on the rack bottom plate 10.
And the wheel jump control mechanism 30 is arranged on the platform base plate 10 and is used for driving wheels of the test vehicle to move along the vertical direction. Specifically, the wheel-jump control mechanism 30 is disposed on the platform base plate 10 and under the lifted wheels of the test vehicle, and can apply a vertical force to the wheels of the test vehicle to drive the wheels of the test vehicle to move in the vertical direction. That is, the wheel-jump control mechanism 30 can apply a vertical upward force to the wheels of the test vehicle to lift the wheels of the test vehicle above the wheel-jump control mechanism 30, thereby achieving the purpose of simulating the condition of uneven road surface.
And the wheel center loading mechanism 40 is arranged on the base plate 10 of the rack and is used for driving wheels of the test vehicle to move along the horizontal direction. Specifically, the wheel center loading mechanism 40 is disposed on the platform base plate 10 and located on a side surface of the lifted test vehicle wheel, specifically, on a side surface corresponding to the forward direction of the test vehicle, and can apply a horizontal force to the test vehicle wheel to drive the test vehicle wheel to move in the horizontal direction. That is, the wheel center loading mechanism 40 can apply a horizontal force, specifically a longitudinal force directed toward the wheel center of the wheel of the test vehicle, to the test vehicle to simulate the dynamic change of the suspension when the test vehicle is subjected to a longitudinal impact.
And the steering control mechanism 50 is used for being installed on the test vehicle and controlling the steering wheel of the test vehicle to drive the wheels of the test vehicle to rotate. Specifically, the steering control mechanism 50 is mounted on the test vehicle, and can simulate the operation of a driver, and control the steering wheel of the test vehicle to rotate, so as to drive the wheels of the test vehicle to rotate.
And the main control mechanism 60 is connected with the wheel hop control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 and is used for controlling the wheel hop control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 to complete the verification of the dynamic and static chassis spaces when the lifting fixing mechanism 20 lifts and fixes the test vehicle. Specifically, the main control mechanism 60 is provided with a driving program for realizing chassis dynamic and static space verification, and the driving program ensures that the wheel movement of a test vehicle covers all possible working conditions in a road in the chassis dynamic and static space verification process by utilizing the relationship of steering, wheel hop and wheel center loading coupling of the wheels so as to solve the problem of insufficient verification working conditions in the whole vehicle road test process, thereby achieving the purpose of simulating different road conditions, ensuring that the test can meet the requirements of different vehicles and reducing the risk of chassis dynamic and static interference; moreover, the main control mechanism 60 controls the steering control mechanism 50 to simulate the driver to drive the test vehicle, which can help to reduce the test cost, avoid the deviation of the test result caused by the driving habit and the emergency of the driver, and ensure the sufficiency of the verification result.
When the chassis dynamic and static space verification test bed is used for verifying the chassis dynamic and static space, the method comprises the following test procedures:
s1: a test vehicle is driven to a specific area of the bed plate 10.
S2: the test vehicle is controlled to do ascending movement through the lifting fixing mechanism 20 so as to be lifted to a specific height, and the vehicle body of the test vehicle is fixed so as to ensure the stability of the vehicle body of the test vehicle in the test process. It is understood that the lifting fixing mechanism 20 can be connected to the main control mechanism 60, and is used for controlling the test vehicle to perform lifting movement relative to the platform base plate 10 under the control of the main control mechanism 60 and fixing the body of the test vehicle; the test vehicle can also be controlled to move up and down relative to the base plate 10 of the rack by an independent controller, and the body of the test vehicle is fixed.
S3: a wheel jump control mechanism 30 and a wheel center loading mechanism 40 are arranged on the rack bottom plate 10, and a steering control mechanism 50 is arranged on the test vehicle, wherein the wheel jump control mechanism 30 is arranged below the wheels of the test vehicle so as to provide vertical force for the wheels and control the wheels to move along the vertical direction; and the wheel center loading mechanism 40 is arranged on the side surface of the wheel of the test vehicle so as to provide a horizontal force to the wheel and control the wheel to move towards the horizontal direction.
S4: and (3) performing software debugging on a driver in the main control mechanism 60 and executing the driver so that the main control mechanism 60 controls the wheel jump control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 to complete chassis dynamic and static space verification and obtain test records.
For example, after the lifting fixing mechanism 20 lifts the test vehicle to a specific height and fixes the body of the test vehicle, the main control mechanism 60 controls the wheel hop control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 to complete the chassis dynamic and static space verification, i.e., step S4 can simulate but not be limited to the following conditions:
(1) the steering control mechanism 50 can be independently controlled by the main control mechanism 60 to operate the steering wheel of the test vehicle to rotate the wheels of the test vehicle, so as to simulate straight-going, left-turning, right-turning and other operations in the process of driving the vehicle.
(2) The main control mechanism 60 can control the steering control mechanism 50 to operate the steering wheel of the test vehicle so as to drive the wheels of the test vehicle to rotate, so that when the operations of straight running, left turning, right turning and the like in the process of driving the vehicle are simulated, the wheel hop control mechanism 30 is controlled to apply vertical force to at least one (one or more) of the four wheels of the test vehicle, so as to drive the corresponding wheels of the test vehicle to move along the vertical direction, and thus the purpose of simulating the driving of the test vehicle on the road with uneven road surface is achieved.
(3) The steering control mechanism 50 can be controlled by the main control mechanism 60 to operate the steering wheel of the test vehicle so as to drive the wheels of the test vehicle to rotate, so that when the operations such as straight running, left turning and right turning in the process of driving the vehicle are simulated, the wheel center loading mechanism 40 is controlled to apply horizontal force to the wheels (specifically front wheels) of the test vehicle, and the corresponding wheels of the test vehicle are driven to move along the horizontal direction, so that the process of simulating the driving of the test vehicle is achieved, and the situation that an obstacle (such as a barrier rod) exists on the road surface is met.
(4) The steering control mechanism 50 can be controlled by the main control mechanism 60 to operate the steering wheel of the test vehicle so as to drive the wheels of the test vehicle to rotate, so that the straight running, left turning, right turning and other operations in the vehicle driving process are simulated, meanwhile, the vertical force is applied to the wheels of the test vehicle by the main control mechanism 60, and the horizontal force is applied to the wheels of the test vehicle by the wheel center loading mechanism 40, so that the road condition that the road surface is uneven and obstacles exist is simulated.
Therefore, the main control mechanism 60 controls the wheel hop control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 to complete the dynamic and static space verification of the chassis, so that the aim of simulating different road conditions can be fulfilled, and the test can meet the requirements of different vehicles; in addition, the steering control mechanism 50 can be controlled by the main control mechanism 60 to perform simulation operation in the test process, which is beneficial to reducing the test cost, improving the test efficiency to achieve the purpose of shortening the pressure measurement period and ensuring the test comprehensiveness.
S5: after the driving program is executed, the wheel jump control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 are disassembled and assembled, the lifting fixing mechanism 20 controls the test vehicle to do descending motion, the chassis dynamic and static space verification test bed is recovered, and the test is finished.
The chassis dynamic and static space verification test bed provided by the embodiment can lift and fix a test vehicle through the lifting fixing mechanism 20 when the test vehicle is located at a specific position of the rack bottom plate 10, so that wheels of the test vehicle are suspended, other tools (such as the wheel hop control mechanism 30 and the wheel center loading mechanism 40) are convenient to mount, and the vehicle body of the test vehicle is kept stable. The main control mechanism 60 controls the wheel jump control mechanism 30, the wheel center loading mechanism 40 and the steering control mechanism 50 to work, so that the wheel movement of the test vehicle covers all possible working conditions in all roads, the purpose of simulating different road conditions is achieved, and the test can meet the requirements of different vehicles; moreover, the main control mechanism 60 controls the steering control mechanism 50 to simulate the driver to drive the test vehicle, which can help to reduce the test cost, avoid the deviation of the test result caused by the driving habit and the emergency of the driver, and ensure the sufficiency of the verification result.
In one embodiment, as shown in fig. 1 and 2, lift fixture 20 includes a lift control assembly 21 and a fixture assembly (not shown).
And the lifting control assembly 21 is arranged on the platform base plate 10 and is used for controlling the test vehicle to do lifting movement relative to the platform base plate 10. Specifically, when the chassis dynamic and static space verification is started, if the test vehicle drives to a specific position of the rack base plate 10, the lifting control assembly 21 is required to control the test vehicle to make a lifting motion relative to the rack base plate 10 so as to lift the test vehicle to a preset height, so as to facilitate installation of other tools (such as the wheel hop control mechanism 30 and the wheel center loading mechanism 40); after the verification of the dynamic and static space of the chassis is finished, the lifting control assembly 21 is adopted to control the test vehicle to do descending motion relative to the rack bottom plate 10, and the test vehicle is parked on the rack bottom plate 10. It can be understood that the test vehicle is placed on the elevation control assembly 21 and is moved up and down relative to the platform base plate 10 by the elevation control assembly 21.
The fixed assembly is arranged on the lifting control assembly 21 and used for fixing the body of the test vehicle, so that the stability of the body of the test vehicle is guaranteed in the verification process of the dynamic and static space of the chassis, and the influence on the accuracy of the test due to the movement of the body of the test vehicle is avoided when the wheel of the test vehicle is controlled to move in the verification process.
In the chassis dynamic and static space verification test bed provided by the embodiment, when the chassis dynamic and static space verification starts, the lifting control assembly 21 is adopted to control the test vehicle to do lifting motion relative to the base plate 10 of the rack so as to lift the test vehicle, and the fixing assembly is adopted to fix the body of the test vehicle so as to ensure the stability of the body of the test vehicle in the verification process and avoid the interference on the verification result; after the verification of the dynamic and static space of the chassis is finished, the lifting control assembly 21 is adopted to control the test vehicle to do descending motion relative to the rack bottom plate 10, so that the test vehicle is recovered to the rack bottom plate 10, and the verification of the dynamic and static space of the chassis is finished.
In one embodiment, as shown in fig. 1 and 2, the lifting control assembly 21 includes a support column 211 disposed on the platform base plate 10, a support plate 212 mounted on the support column 211, and a lifting power device (not shown) connected to the support plate 212, wherein the support plate 212 is driven by the lifting power device to move along an axial direction of the support column 211 so as to control the test vehicle placed on the support plate 212 to move up and down relative to the platform base plate 10. The supporting column 211 is perpendicular to the platform bottom plate 10, so that when the supporting plate 212 is driven by the lifting power device to move along the axial direction of the supporting column 211, the test vehicle placed on the supporting plate 212 can be controlled to move up and down relative to the platform bottom plate 10. It is understood that the lifting power device may be connected to the main control mechanism 60 for controlling the supporting plate 212 to move up or down according to the instruction of the main control mechanism 60, or the lifting power device may be controlled by an independent controller to drive the supporting plate 212 to move up or down.
In this embodiment, the lifting power device may be, but is not limited to, a hydraulic control system, and the hydraulic control system is connected to the support plate 212 and is configured to drive the support plate 212 to perform a lifting motion relative to the rack base plate 10 and to drive the test vehicle placed on the support plate 212 to perform a lifting motion relative to the rack base plate 10, so that in the chassis dynamic and static space verification process, the test vehicle is lifted to a preset height to suspend the wheels of the test vehicle, so that different working conditions in the road can be simulated by the wheel hop control mechanism 30 and the wheel center loading mechanism 40 in the following process, and thus the chassis dynamic and static space verification can be performed.
In one embodiment, the support plate 212 may be rectangular, the long side of the support plate 212 is perpendicular to the longitudinal direction of the body of the test vehicle, and the short side of the support plate 212 is parallel to the longitudinal direction of the body of the test vehicle, that is, when the dynamic and static space of the chassis is verified, the support plate 212 may be disposed between the front wheels (including the left front wheel and the right front wheel) and the rear wheels (including the left rear wheel and the right rear wheel) of the test vehicle for supporting the test vehicle. When the lifting control assembly 21 is installed, the supporting flat plate 212 is positioned below a vehicle body among four wheels of a test vehicle, and the test vehicle above the supporting flat plate 212 can be driven to move up and down under the action of lifting power equipment.
In one embodiment, the lifting control assembly 21 includes four support columns 211 arranged in a rectangular shape, each support column 211 is provided with a slide rod (not shown) perpendicular to the platform base plate 10, and four corners of the support plate 212 are provided with through holes (not shown) for the slide rods to pass through. When the lifting control assembly 21 is installed, the sliding rods of the four supporting columns 211 respectively pass through one through hole on the supporting flat plate 212 and are fixed on the rack base plate 10, so that the supporting flat plate 212 can move along the axial direction of the four sliding rods under the action of the lifting power equipment, and the purpose of controlling the test vehicle placed on the supporting flat plate 212 to do lifting movement is achieved.
In one embodiment, the securing assembly includes a rail clamping assembly 22 disposed on the support plate 212 for clamping a frame rail of the test vehicle. The frame is the most important bearing part in the automobile, the frame longitudinal beam is one of the key parts in the frame longitudinal beam, the frame longitudinal beam plays an important bearing role on the automobile, the frame longitudinal beam is generally formed by stamping low alloy steel plates, the section shape is generally a groove shape, and some frame longitudinal beams are made into Z-shaped or box-shaped sections. Understandably, as the frame longitudinal beam is the most important bearing part in the test vehicle and has the function of supporting objects on the beam (namely other parts on the body of the test vehicle), when the frame longitudinal beam is fixed, the body of the test vehicle is fixed, so that the problem that the accuracy of a test result is influenced due to the instability of the test vehicle in the process of verifying the dynamic and static space of the chassis is avoided. It will be appreciated that the rail clamping assembly 22 may clamp a rail flange or other portion of a frame rail for purposes of securing the frame rail.
In one embodiment, to ensure the stability of the test vehicle, at least two rail clamping assemblies 22 may be provided, i.e., the fixing assembly includes at least two rail clamping assemblies 22, which cooperate to fix the body rails of the test vehicle via the at least two rail clamping assemblies 22.
Because the support flat plate 212 is the rectangle setting, fixed subassembly can be including setting up four longeron clamping component 22 in support flat plate 212 both sides, and each side is equipped with two longeron clamping component 22 promptly for press from both sides tight test vehicle's frame longeron, in order to reach the purpose of the automobile body of fixed test vehicle, thereby avoid in chassis dynamic and static space verification process, influence the accuracy of test result because of test vehicle's unstability. Specifically, the long side of the support flat plate 212 is vertical to the longitudinal direction of the vehicle body of the test vehicle, the short side of the support flat plate 212 is parallel to the longitudinal direction of the vehicle body of the test vehicle, two longitudinal beam clamping assemblies 22 are respectively arranged on one side where each short side of the support flat plate 212 is located, and the four longitudinal beam clamping assemblies 22 are matched with each other, so that the stability of the test vehicle can be effectively guaranteed in the verification process of the dynamic and static space of the chassis. The rail clamping assembly 22 is used to clamp a rail flange of a test vehicle to secure the test vehicle.
In one embodiment, as shown in fig. 1 and 2, the rail clamping assembly 22 includes a clamp base 221 disposed on the support plate 212, a clamping screw 222 disposed on the clamp base 221, a clamp slide 223 coupled to the clamping screw 222, and a flanging clamp 224 disposed on the support plate 212, the clamping screw 222 being configured to adjust a distance between the clamp slide 223 and the flanging clamp 224, the clamp slide 223 and the flanging clamp 224 cooperating to clamp a frame rail of the test vehicle. Specifically, the chucking plate base 221 is provided on one side of the support plate 212, specifically, on the side of the short side of the rectangular support plate 212. A flange clamp plate 224 is disposed on support plate 212 opposite clamp plate base 221 such that when frame rail is secured by rail clamp assembly 22, the frame rail is positioned between clamp plate base 221 and flange clamp plate 224. The clamping screw 222 and the clamping plate slider 223 connected with the clamping screw 222 are arranged on the clamping plate base 221, and the clamping screw 222 can drive the clamping plate slider 223 to move towards or away from each other relative to the flanging clamping plate 224 so as to adjust the distance between the clamping plate slider 223 and the flanging clamping plate 224. When the longitudinal beam clamping assembly 22 is used for clamping a longitudinal beam of a vehicle frame, the longitudinal beam of the vehicle frame needs to be positioned between the clamping plate sliding block 223 and the flanging clamping plate 224, and then the distance between the clamping plate sliding block 223 and the flanging clamping plate 224 is adjusted through the clamping screw 222 so as to clamp the longitudinal beam of the vehicle frame of the test vehicle, so that the purpose of fixing the test vehicle is achieved.
In one embodiment, the wheel-jump control mechanism 30 includes a wheel-jump control assembly 31 disposed on the bed plate 10, the wheel-jump control assembly 31 being disposed below the wheels of the lifted test vehicle for applying a vertically-directed force to the wheels of the test vehicle to control the wheels of the test vehicle to move in a vertical direction. Specifically, the wheel-jump control mechanism 30 includes four wheel-jump control assemblies 31 disposed on the platform base plate 10, each wheel-jump control assembly 31 being disposed under a wheel of the lifted test vehicle for applying a vertical force to the wheel of the test vehicle to control the wheel of the test vehicle to move in a vertical direction, thereby simulating a situation where the corresponding wheel moves on an uneven road surface.
It can be understood that, when the chassis dynamic and static space verification test bed is used for testing, the test vehicle needs to be lifted to a preset height by the lifting fixing mechanism 20, and then a wheel hop control assembly 31 is respectively installed under each wheel of the test vehicle, so that a vertical force is applied to the corresponding wheel through the wheel hop control assembly 31 to control the corresponding wheel to move (i.e. ascend or descend) in the vertical direction, so as to simulate different road conditions. For example, if it is desired to simulate any one wheel driving on a convex road surface, a vertical upward force can be applied to the wheel by the wheel-jump control assembly 31, so that the wheel moves upward in the vertical direction; if it is required to simulate the driving of any one wheel on a concave road surface, the wheel-hop control assemblies 31 corresponding to the other three wheels can apply a vertical upward force to the corresponding wheel, so that the other three wheels move upward along the vertical direction, and the rest wheels can simulate the driving on the concave road surface.
In one embodiment, the wheel-jump control assembly 31 includes a first fixing member 311 disposed on the platform base plate 10, a tray 312 disposed on the first fixing member 311, and a wheel-jump power device 313 connected to the tray 312, wherein the tray 312 is disposed under the wheel of the test vehicle and is configured to move in a vertical direction under the action of the wheel-jump power device 313, so as to apply a vertical force to the wheel of the test vehicle to control the wheel of the test vehicle to move in the vertical direction. Wherein, the tray 312 is arranged below the wheel of the test vehicle for supporting the wheel of the test vehicle, and the tray 312 is arranged on the first fixing piece 311, and can control the tray 312 to move along the vertical direction under the action of the wheel jump power device 313.
The wheel-jump power device 313 is a power device in the wheel-jump control assembly 31, and is used for providing power to move the tray 312 in the vertical direction so as to apply a vertical force to the wheels of the test vehicle, so as to control the wheels of the test vehicle to move in the vertical direction, and thus, the purpose of simulating the wheels of the test vehicle to run on different road conditions is achieved. The wheel-jump power device 313 is connected with the main control mechanism 60 and is used for applying vertical force to the wheels of the test vehicle according to the instruction of the main control mechanism 60 so as to control the wheels of the test vehicle to move along the vertical direction.
In one embodiment, the first fixing member 311 includes a fixing member body (not shown) and a hydraulic sealing member (not shown), the fixing member body and the hydraulic sealing member cooperate to form a sealed chamber, and the hydraulic sealing member is connected to the tray 312 for controlling the tray 312 to move in a vertical direction according to a hydraulic pressure value in the sealed chamber; the wheel hop power equipment 313 is a hydraulic control system which is connected with the sealed chamber through a hydraulic hose 314 and is used for adjusting the hydraulic pressure value in the sealed chamber. It is understood that, when the wheel-jump power plant 313 is a hydraulic control system, by providing a hydraulic seal on the first fixed member 311, a sealed chamber is configured between the first fixed member 311 and the hydraulic seal, and the sealed chamber is connected to the hydraulic control system through a hydraulic hose 314, so as to adjust the hydraulic pressure value in the sealed chamber through the hydraulic control system. Because the hydraulic sealing element is connected with the tray 312, the hydraulic sealing element can drive the tray 312 to move along the vertical direction when the hydraulic value in the sealing chamber changes, so as to apply a force in the vertical direction to the wheel of the test vehicle, and control the wheel of the test vehicle to move along the vertical direction. The hydraulic control system controls the hydraulic values of the sealing chambers in the different first fixing pieces 311 to adjust the stress of the different trays 312, so that the stress of different wheels of the test vehicle can be adjusted, and the purpose of simulating the road condition of the wheels running on the rugged road can be achieved.
In one embodiment, since each vehicle of the test vehicle is provided with one wheel-hop control assembly 31 under it, the wheel-hop control mechanism 30 includes four wheel-hop control assemblies 31. After the test vehicle is lifted to a preset height by the lifting fixing mechanism 20, the four wheel-jump control assemblies 31 need to be installed, that is, one wheel-jump control assembly 31 is installed under each of the four wheels of the test vehicle, so that each wheel-jump control assembly 31 can drive one wheel to move in the vertical direction. It can be understood that after the test vehicle is lifted to a preset height by the lifting fixing mechanism 20, four wheel-jump control assemblies 31 detachably fixed on the platform base plate 10 are configured, so that the chassis dynamic and static space verification test platform can be compatible with test vehicles with different wheel bases, different wheel bases or different wheel bases and different wheel bases, and the generalization rate is high.
Further, each wheel hop control assembly 31 further comprises a mounting rail 315 disposed on the platform base plate 10, and the first fixing member 311 is mounted on the mounting rail 315. The mounting rail 315 is disposed in a strip shape, and a plurality of strip-shaped second grooves (not shown) are disposed on the mounting rail 315 for mounting the first fixing member 311. The slide rail 315 is installed so that its axial direction is the same as the longitudinal direction of the body of the test vehicle. The mounting rail 315 is mounted on the platform base plate 10 and located below the wheels of the lifted test vehicle, and is used for mounting the first fixing member 311. During installation, the distance between an installation slide rail 315 corresponding to a left wheel (comprising a left front wheel and a left rear wheel) of the test vehicle and an installation slide rail 315 corresponding to a right wheel (comprising a right front wheel and a right rear wheel) of the test vehicle is determined according to the wheel track of the test vehicle; and then, the distance between the two first fixing pieces 311 positioned on the same side of the test vehicle is determined according to the wheel base of the test vehicle, so that the chassis dynamic and static space verification test bed can verify the test vehicles with different wheel bases and wheel bases, and the generalization rate of the test vehicles is improved.
In one embodiment, as shown in fig. 1, the wheel center loading mechanism 40 includes a second fixing member 41 disposed on the platform base plate 10, an actuator 42 disposed on the second fixing member 41, and a wheel center power device (not shown) connected to the actuator 42, wherein the actuator 42 is disposed opposite to the wheel center of the wheel of the test vehicle, and is configured to move in a horizontal direction under the driving of the wheel center power device, so as to apply a horizontal force to the wheel of the test vehicle, so as to control the wheel of the test vehicle to move in the horizontal direction. The second fixing member 41 is detachably mounted on the platform base plate 10, and is a supporting member for mounting the actuator 42.
In an embodiment, the second fixing member 41 can be fixed on the platform bottom plate 10 by the mounting rail 315, that is, the mounting rail 315 is firstly mounted on the platform bottom plate 10, and then the second fixing member 41 is mounted on the mounting rail 315. Specifically, when the wheel-hop control mechanism 30 and the wheel-center loading mechanism 40 are assembled, a mounting slide rail 315 may be installed under each wheel of the lifted test vehicle, the wheel-hop control assembly 31 is installed on the mounting slide rail 315 directly below the lifted test vehicle, and the wheel-center loading mechanism 40 is installed on the mounting slide rail 315, so that the wheel-center loading mechanism 40 is located on one side surface of the wheel of the test vehicle, so as to provide a longitudinal force pointing to the wheel center for the wheel of the test vehicle, and drive the wheel to move in the horizontal direction. The mounting rails 315 are first mounted to the bed base 10 to facilitate mounting of the wheel hop control assembly 31 and the wheel center loading mechanism 40.
In this embodiment, the wheel center loading mechanism 40 may be disposed on one side of front wheels (including at least one of the left front wheel and the right front wheel) of the test vehicle, and the actuator 42 is disposed opposite to a wheel center of a wheel of the test vehicle, and the actuator 42 may move in a horizontal direction toward the wheel center of the wheel according to power provided by the wheel center power device, so as to apply a horizontal force (i.e., a longitudinal force) to the wheel of the test vehicle, so as to control the wheel of the test vehicle to move in the horizontal direction, so as to simulate a road condition where an obstacle (e.g., a stop bar) exists on a road surface during driving of the test vehicle, i.e., simulate a dynamic change of a suspension when the test vehicle is subjected to a longitudinal impact during driving control, so as to improve the test comprehensiveness. The wheel center power unit may be connected to the main control mechanism 60 for controlling the actuator 42 to apply a horizontal force to the wheels of the test vehicle according to the instructions of the main control mechanism 60 to control the wheels of the test vehicle to move in the horizontal direction.
In one embodiment, the actuator 42 is embodied as an element for applying a longitudinal force to the wheel center of the wheel of the test vehicle. The wheel center power device is a device for powering the actuator 42. The wheel center power equipment can be specifically a hydraulic control system, correspondingly, the actuator 42 is a hydraulic actuator 42, and the hydraulic actuator 42 can provide longitudinal force (force in the horizontal direction) pointing to the wheel center to the wheel of the test vehicle under the action of the hydraulic control system so as to control the wheel of the test vehicle to move in the horizontal direction, so that the dynamic change of a suspension when the test vehicle is subjected to longitudinal impact is simulated.
In one embodiment, as shown in fig. 3, the steering control mechanism 50 includes a fixing jaw 51 for connecting a steering wheel of the test vehicle, a driving motor 52 for providing a driving force, a universal joint 53 for connecting the fixing jaw 51 and the driving motor 52, a motor fixing bracket 54 for fixing the driving motor 52, two steering fixing brackets 55 for clamping a door of the test vehicle, and a connecting shaft assembly 56 for connecting the two steering fixing brackets 55 and the motor fixing bracket 54.
During installation of the steering control mechanism 50, the following steps may be included: first, two steering fixing brackets 55 are fixed to the door of the test vehicle, and the two steering fixing brackets 55 are connected by a connecting shaft rod assembly 56. It will be appreciated that two steering fixing brackets 55 are employed to cooperate with the connecting shaft assembly 56 to form a structure for supporting the motor fixing bracket 54 to which the driving motor 52 is mounted, so that the driving motor 52 drives the fixing jaw 51 to operate. Then, the driving motor 52 is installed on the motor fixing support 54, the universal joint 53 is adopted to connect the driving motor 52 and the fixing jaw 51, the universal joint 53 is used for transmitting power output by the driving motor 52, and the arrangement of the universal joint 53 can adjust the angle difference between the steering wheel of the test vehicle and the driving motor 52, so that the chassis dynamic and static space verification test bed can adapt to test vehicles of different vehicle types, and the accuracy of test results is improved. Finally, the fixed jaw 51 is attached to the steering wheel of the test vehicle, and the position of the motor fixing bracket 54 on the connecting shaft assembly 56 is adjusted accordingly to complete the installation of the steering control mechanism 50. In this embodiment, the fixed claws 51 are connected to a steering wheel of the test vehicle, so that the fixed claws 51 apply the power of the driving motor 52 to the steering wheel to control the steering wheel to correspondingly turn left or right, thereby achieving the purpose of controlling the steering of the wheels of the test vehicle.
Further, in order to enable the steering control mechanism 50 to adapt to test vehicles of different vehicle types (particularly test vehicles with different distances between two doors), a telescopic connecting shaft rod assembly 56 can be adopted to connect the two steering fixing supports 55, so that the generalization rate of the chassis dynamic and static space verification test bed is improved.
In one embodiment, the connecting shaft assembly 56 specifically includes a support member for mounting the motor mount bracket 54 and a telescoping connection member connected to the support member. When the steering control mechanism 50 is installed, the two steering fixing brackets 55 are fixed on the vehicle door of the test vehicle, the support is fixed on the steering fixing bracket 55 corresponding to the vehicle door close to one side of the steering wheel of the test vehicle, and the support and the other steering fixing bracket 55 are connected by adopting the telescopic connecting piece, so that the generalization rate of the chassis dynamic and static space verification test bed is improved. Specifically, the support member may be provided in a rectangular frame shape, and may be used to mount the motor fixing bracket 54.
Further, the driving motor 52 is connected to the main control mechanism 60 for providing driving forces in different directions to the fixed claws 51 according to instructions from the main control mechanism 60 to simulate straight running, left turning, right turning, and the like in driving the vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a chassis sound attitude space verification test bench which characterized in that includes:
a rack base plate;
the lifting fixing mechanism is arranged on the rack bottom plate and used for controlling the test vehicle to do lifting motion relative to the rack bottom plate and fixing the vehicle body of the test vehicle;
the wheel jump control mechanism is arranged on the bottom plate of the rack and used for driving wheels of the test vehicle to move along the vertical direction;
the wheel center loading mechanism is arranged on the bottom plate of the rack and used for driving wheels of the test vehicle to move along the horizontal direction;
the steering control mechanism is arranged on the test vehicle and used for controlling a steering wheel of the test vehicle to drive wheels of the test vehicle to rotate;
and the main control mechanism is connected with the wheel hop control mechanism, the wheel center loading mechanism and the steering control mechanism and is used for controlling the wheel hop control mechanism, the wheel center loading mechanism and the steering control mechanism to complete chassis dynamic and static space verification when the lifting fixing mechanism lifts and fixes the test vehicle.
2. The chassis dynamic and static space verification test stand of claim 1, wherein the lifting fixing mechanism comprises:
the lifting control assembly is arranged on the rack bottom plate and used for controlling the test vehicle to do lifting motion relative to the rack bottom plate;
and the fixing assembly is arranged on the lifting control assembly and used for fixing the body of the test vehicle.
3. The chassis dynamic and static space verification test bed as claimed in claim 2, wherein the lifting control assembly includes a support column disposed on the platform base plate, a support plate mounted on the support column, and a lifting power device connected to the support plate, the support plate is driven by the lifting power device to move along the axial direction of the support column, so as to control the test vehicle placed on the support plate to move up and down relative to the platform base plate.
4. The chassis dynamic and static space certification test stand of claim 3, wherein the fixing assembly includes a rail clamping assembly disposed on the support plate for clamping frame rails of the test vehicle.
5. The chassis dynamic and static space verification test bed as claimed in claim 4, wherein said longitudinal beam clamping assembly comprises a clamping plate base disposed on said supporting plate, a clamping screw disposed on said clamping plate base, a clamping plate slider connected with said clamping screw, and a flanging clamping plate disposed on said supporting plate, said clamping screw being used for adjusting the distance between said clamping plate slider and said flanging clamping plate, said clamping plate slider and said flanging clamping plate cooperating to clamp the frame longitudinal beam of said test vehicle.
6. The chassis dynamic and static space verification test bed as claimed in claim 1, wherein the wheel jump control mechanism comprises a wheel jump control assembly disposed on the bed plate of the bed, the wheel jump control assembly being disposed under the lifted wheels of the test vehicle for applying a vertical force to the wheels of the test vehicle to control the wheels of the test vehicle to move in a vertical direction.
7. The chassis dynamic and static space verification test bed as claimed in claim 6, wherein the wheel hop control assembly comprises a first fixing member arranged on the bottom plate of the platform, a tray arranged on the first fixing member and a wheel hop power device connected with the tray, the tray is arranged below the wheels of the test vehicle and is used for moving in a vertical direction under the driving of the wheel hop power device, and a vertical force is applied to the wheels of the test vehicle so as to control the wheels of the test vehicle to move in the vertical direction.
8. The chassis dynamic and static space verification test bed according to claim 7, wherein the first fixing member comprises a fixing member body and a hydraulic sealing member, the fixing member body and the hydraulic sealing member cooperate to form a sealed chamber, and the hydraulic sealing member is connected with the tray and used for controlling the tray to move in the vertical direction according to a hydraulic pressure value in the sealed chamber;
the wheel jump power equipment is a hydraulic control system, and the hydraulic control system is connected with the sealed cavity through a hydraulic hose and is used for adjusting a hydraulic value in the sealed cavity.
9. The chassis dynamic and static space verification test bed as claimed in claim 1, wherein the wheel center loading mechanism comprises a second fixed member disposed on the bottom plate of the platform, an actuator disposed on the second fixed member and a wheel center power device connected with the actuator, the actuator is disposed opposite to the wheel center of the wheel of the test vehicle and is used for moving in the horizontal direction under the driving of the wheel center power device to apply a horizontal force to the wheel of the test vehicle so as to control the wheel of the test vehicle to move in the horizontal direction.
10. The chassis dynamic and static space verification test bed according to claim 1, wherein the steering control mechanism comprises a fixing jaw for connecting a steering wheel of the test vehicle, a driving motor for providing a driving force, a universal joint for connecting the fixing jaw and the driving motor, a motor fixing support for fixing the driving motor, two steering fixing brackets for clamping a door of the test vehicle, and a connecting shaft assembly for connecting the two steering fixing brackets and the motor fixing support.
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| CN201910540496.4A CN112113772B (en) | 2019-06-21 | 2019-06-21 | Chassis dynamic and static space verification test bed |
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