CN109596369B - Suspension steering motion interference test bench and suspension steering motion interference test method - Google Patents
Suspension steering motion interference test bench and suspension steering motion interference test method Download PDFInfo
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- CN109596369B CN109596369B CN201811623738.8A CN201811623738A CN109596369B CN 109596369 B CN109596369 B CN 109596369B CN 201811623738 A CN201811623738 A CN 201811623738A CN 109596369 B CN109596369 B CN 109596369B
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Abstract
The invention discloses a suspension steering motion interference test bench and a suspension steering motion interference test method, wherein the suspension steering motion interference test bench comprises the following components: the test bed main body is provided with a mounting position for mounting a frame to be tested and an axle and a loading mechanism for applying loading force; the wheel edge force application assembly is suitable for being installed on a wheel hub of an axle to be tested and is used for being connected with the output end of the loading mechanism; the transverse pull rod fixing bracket is used for fixing the transverse pull rod to a beam of an axle; the front axle knuckle arm ball pin simulation support is suitable for being connected with an axle knuckle arm and is provided with a first sensor mounting position; the steering rocker ball pin point simulation support is suitable for being connected with the frame and is provided with a second sensor mounting position. The suspension steering motion interference test bench can simulate the whole system for the suspension steering motion interference of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle manufacturing, in particular to a suspension steering motion interference test bench and a suspension steering motion interference test method for the same.
Background
In the deformation process of the plate spring, the guide tracks are not completely consistent, and guide interference can be generated. The resulting effect is that when the leaf spring is deformed, the wheel self-steers, affecting the ability of the vehicle to travel in a straight line with stability. In the related technology, the performance check is completed through theoretical analysis and calculation, and the related verification means relatively lags behind in the whole vehicle development process. The shaping test difficulty of related parts is increased, and the technical states of the parts may need to be frequently adjusted in the middle and later stages of the whole vehicle development. Meanwhile, no integral verification means exists for the whole set of suspension and steering system proportion at present. The related content of theoretical verification needs to adopt some empirical analysis coefficients, so that the theoretical analysis result may have a great difference from the actual part. The technical state of parts cannot be effectively optimized before the car loading is designed, the type selection of parts is influenced, and an improved space exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a suspension steering motion interference test bench which can simulate the suspension steering motion interference of a whole vehicle in a whole system.
The suspension steering motion interference test stand according to the embodiment of the invention comprises: the test bed main body is provided with a mounting position for mounting a vehicle frame to be tested and an axle and a loading mechanism for applying loading force; the wheel edge force application assembly is suitable for being installed on a wheel hub of an axle to be tested and is used for being connected with the output end of the loading mechanism; the transverse pull rod fixing bracket is used for fixing the transverse pull rod to a beam of an axle; the front axle knuckle arm ball pin simulation support is suitable for being connected with an axle knuckle arm and is provided with a first sensor mounting position; the steering rocker ball pin point simulation support is suitable for being connected with the frame and is provided with a second sensor mounting position.
The suspension steering motion interference test bench provided by the embodiment of the invention can be used for simulating the whole system for the suspension steering motion interference of the whole vehicle, can accurately measure the motion interference amount of the suspension steering system, and can carry out bench verification and proportioning setting at the initial stage of the development of the whole vehicle. The difficulty of subsequent development of the whole vehicle is reduced, sufficient space is provided for optimization of related parts, and the overall improvement of the system performance is achieved.
According to one embodiment of the invention, the suspension steering motion interference test stand comprises: a side plate; the wheel edge connecting disc is connected with the side plate and is provided with a connecting position used for being connected with a wheel hub; and the force application block is connected with the side plate and is used for being connected with the output end of the loading mechanism.
According to the suspension steering motion interference test stand provided by the embodiment of the invention, the wheel-side connecting disc is detachably connected with the side plate.
According to the suspension frame steering motion interference test stand, the side plate is provided with the long hole extending along the vertical direction, and the force application block is connected with the side plate through the threaded connecting piece penetrating through the long hole so as to selectively adjust the position of the force application block.
According to the suspension steering motion interference test bench, the force application block comprises end plates on two sides, a first force bearing plate connected between the two end plates and a second force bearing plate connected between the two end plates, wherein one end plate is connected with the side plate, the normal line of the first force bearing plate is in the horizontal direction and is used for being connected with a horizontal loader of the loading mechanism, and the normal line of the second force bearing plate is in the vertical direction and is used for being connected with a vertical loader of the loading mechanism.
According to a suspension steering motion interference test stand according to an embodiment of the present invention, the tie rod fixing bracket includes: the base plate is suitable for being clamped between the plate spring and the frame through a connecting piece, and the sleeve is used for being sleeved outside the transverse pull rod.
According to one embodiment of the invention, the suspension steering motion interference test stand comprises a front axle knuckle arm ball pin simulation support, wherein the front axle knuckle arm ball pin simulation support comprises: the sensor comprises a supporting plate, a sensor body and a sensor body, wherein the supporting plate is provided with a flanging which is formed into a bent shape with the supporting plate, and the flanging is provided with a notch so as to form a first mounting position of the sensor; and the pin shaft is connected with one side of the supporting plate, which is far away from the flanging, and is used for being connected with the axle knuckle arm.
According to one embodiment of the invention, the suspension steering motion interference test bench comprises a steering rocker ball pin point simulation support, wherein the steering rocker ball pin point simulation support comprises: a first plate formed in a bent shape having a mounting location for attachment to a vehicle frame and a second plate having a mounting slot to form the sensor second mounting location.
The invention provides a test method for suspension steering motion interference.
According to the embodiment of the invention, the method for testing the suspension steering motion interference is a method for testing the suspension steering motion interference by using the suspension steering motion interference test stand of any one of the embodiments, and comprises the following steps: assembling a test piece assembly, assembling a plate spring on a frame together with a transverse pull rod fixing support, assembling an axle to the middle part of the plate spring, connecting the plate spring with a beam of the axle, and fixing the transverse pull rod on the transverse pull rod fixing support; placing the whole set of test piece on a test bed main body, and mounting the frame on a ground flat iron of the test bed main body; a wheel edge force application assembly is installed, the horizontal position of a force application disc is corrected through an angle gauge, and a brake drum is locked through adjusting a brake mechanism of a front axle to prevent a wheel edge from rotating; the loading mechanism is installed for connection, and the position of the loading mechanism is adjusted according to the offset distance of the wheel so that the loading mechanism is connected with the wheel edge force application assembly; mounting a knuckle arm ball pin simulation bracket; installing a rocker arm ball pin simulation bracket; the position of the sensor bracket is adjusted in an installing way, so that the ball pin point of the sensor is consistent with the actual ball pin installing point of the vehicle; the loading mechanism is started.
According to the test method for the suspension steering motion interference, the loading mechanism comprises a horizontal loading machine and a vertical loading machine, and the step of starting the loading mechanism comprises the following steps of: starting a vertical loading machine to apply vertical axial load simulation force so as to obtain a corresponding relation curve of the pull rod interference amount and the loading force when the wheel jumps; and starting the vertical loading machine and the horizontal loading machine to apply vertical and horizontal axial load simulation forces so as to obtain pull rod interference amount corresponding curves under different braking deceleration conditions.
The test method of the suspension steering motion interference and the suspension steering motion interference test bench have the same advantages compared with the prior art, and are not described again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIGS. 1-3 are schematic structural views of a suspension steering motion interference test stand according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a wheel edge forcing assembly according to an embodiment of the present invention;
FIGS. 5-6 are schematic structural views of a tie rod fixing bracket according to an embodiment of the present invention;
FIGS. 7-8 are schematic structural views of a front axle knuckle arm ball pin simulation mount according to an embodiment of the present invention;
fig. 9-10 are schematic structural views of a pitot simulating mount for a pitot according to an embodiment of the invention.
Reference numerals:
the suspension steering motion interferes with the test rig 100,
the ground plane 11, the portal frame 12, the vertical beams 121, the cross beams 122, the reaction frame 13, the fixing device 14 of the leaf spring, the relevant accessories 15 of the leaf spring system, the axle assembly 16,
the number of horizontal loaders 21, vertical loaders 22,
the wheel edge force application assembly 3, the edge plate 31, the wheel edge connecting disc 32, the force application block 33, the end plate 331, the first stress plate 332, the second stress plate 333,
a tie rod fixing bracket 4, a bottom plate 41, a top plate 42, a sleeve 43,
a front axle knuckle arm ball pin simulation bracket 5, a support plate 51, a flange 511, a first sensor mounting position 512, a pin shaft 52,
the steering rocker ball pin point simulation bracket 6, the first plate 61, the mounting position 611, the second plate 62, the sensor second mounting position 621, the sensor 7 and the tie rod 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes a suspension steering motion interference test bench 100 according to an embodiment of the present invention with reference to fig. 1 to 10, where the suspension steering motion interference test bench 100 can be used to simulate the suspension steering motion interference of a whole vehicle in a whole vehicle, and can accurately measure the motion interference amount of a suspension steering system, and the bench verification can be performed at the initial stage of the development of the whole vehicle to perform matching and shaping. The difficulty of subsequent development of the whole vehicle is reduced, sufficient space is provided for optimization of related parts, and the overall improvement of the system performance is achieved.
As shown in fig. 1 to 10, a suspension steering motion interference test stand 100 according to an embodiment of the present invention includes: the test bed comprises a test bed main body, a wheel edge force application assembly 3, a tie rod fixing support 4, a front axle knuckle arm ball pin simulation support 5 and a steering rocker arm ball pin point simulation support 6.
The test rig body has a mounting location 611 for mounting the vehicle frame to be tested with the axle and a loading mechanism for applying a loading force. As shown in fig. 1, the test bed main body includes a ground iron 11, a portal frame 12 and a reaction frame 13, the ground iron 11 is 3m × 6m in specification, the ground iron 11 is provided with corresponding T-shaped bolt fastening grooves, the portal frame 12 and the reaction frame 13 are both used as fixed loading mechanisms, the frame and the axle can be placed on the ground iron 11, and the portal frame 12 and the reaction frame 13 are both supported on the ground iron 11.
Wherein, the frame and the axle structure of waiting to test specifically include: the fixing device 14 of the leaf spring, the related accessories 15 of the leaf spring system and the axle assembly 16, the fixing device 14 of the leaf spring can adopt a section of the vehicle frame to completely simulate the characteristics of positioning, connection rigidity and the like on a real vehicle; the related accessories 15 of the leaf spring system comprise parts such as a leaf spring, a lifting lug, a leaf spring pin 52, a U-shaped bolt and the like and related connecting accessories, and the axle assembly 16 adopts the axle assembly 16 which is ready to be developed. The fixing device 14 of the leaf spring, the associated attachment 15 of the leaf spring system and the axle assembly 16 can accurately simulate the result of an interference test under conditions that are substantially identical to the actual vehicle.
The portal frame 12 and the reaction frame 13 can be correspondingly adjusted on the ground iron 11 by adjusting the positions of the T-shaped bolts, and after the adjustment is finished, the portal frame and the reaction frame are fixed on the ground iron 11 through the T-shaped bolts and the pressing plate.
As shown in fig. 1, the gantry 12 includes two vertical beams 121 and a cross beam 122, two ends of the cross beam 122 are respectively connected to the upper ends of the vertical beams 121, the lower end of the vertical beam 121 is supported by the gantry 12 to space the cross beam 122 from the upper surface of the ground iron 11, and the axle and the frame are placed between the cross beam 122 and the ground iron 11 after being installed.
As shown in fig. 1, the wheel-side force application assembly 3 is suitable for being mounted on a wheel hub of an axle to be tested, and the wheel-side force application assembly 3 is used for being connected with an output end of a loading mechanism, and the loading mechanism can apply pressure to the wheel-side force application assembly 3 to simulate the stress of the wheel hub.
The loading mechanism comprises a horizontal loading machine 21 and a vertical loading machine 22, the horizontal loading machine 21 is connected with the reaction frame 13, and the vertical loading machine 22 is connected with the portal frame 12. As shown in fig. 1, the horizontal loader 21 is a horizontal oil cylinder, one end of the horizontal loader 21 is connected with the reaction frame 13, and the other end is connected with the wheel-side force application assembly 3; the vertical loader 22 is a vertical oil cylinder, the upper end of the vertical loader 22 is connected with the cross beam 122 of the gantry 12, and the lower end of the vertical loader 22 is connected with the wheel-side force application assembly 3.
As shown in fig. 1-3, the frame is reversely buckled on the ground flat iron 11. Thus, a load in the horizontal direction is applied to the wheel-side force application assembly 3 by the horizontal loader 21 to simulate a force applied to the wheel hub in the horizontal direction, and a load in the vertical direction is applied to the wheel-side force application assembly 3 by the vertical loader 22 to simulate a force applied to the wheel hub in the vertical direction. Specifically, the wheel side force application assembly 3 can simulate the center of a grounding point of a tire, so that the point of the acting force of the oil cylinder is positioned or passes through the grounding point of the tire, and the stress state of the system is completely simulated.
The track rod fixing bracket 4 is used to fix the track rod 8 to the beam of the axle to eliminate the steering ability of the axle.
The front axle knuckle arm ball pin simulation bracket 5 is suitable for being connected with an axle knuckle arm, the front axle knuckle arm ball pin simulation bracket 5 is provided with a sensor first installation position 512, and the sensor first installation position 512 is used for being connected with a sensor 7; the knuckle arm ball pin point simulation bracket 6 is suitable for being connected with a vehicle frame, the knuckle arm ball pin point simulation bracket 6 is provided with a second sensor mounting position 621, the second sensor mounting position 621 is used for being connected with a sensor 7, as shown in fig. 1, the sensor 7 is a displacement sensor 7, the sensor 7 is rod-shaped, one end of the sensor 7 is connected with the first sensor mounting position 512 of the front axle knuckle arm ball pin simulation bracket 5, the other end of the sensor 7 is connected with the second sensor mounting position 621 of the knuckle arm ball pin point simulation bracket 6, the sensor 7 is used for measuring the interference amount of a pull rod when a leaf spring deforms, specifically, in the process of applying force to a loading mechanism, the knuckle arm ball pin point moves relative to the vehicle frame, and the sensor 7 measures the distance variation amount of the two ball pin points.
The suspension steering motion interference test bench 100 provided by the embodiment of the invention can be used for simulating the whole system for the suspension steering motion interference of the whole vehicle, can accurately measure the motion interference amount of the suspension steering system, and can carry out bench verification and proportioning sizing at the initial stage of the development of the whole vehicle. The difficulty of subsequent development of the whole vehicle is reduced, sufficient space is provided for optimization of related parts, and the overall improvement of the system performance is achieved.
In some embodiments, as shown in fig. 4, the wheel-side forcing assembly 3 includes: a side plate 31, a wheel-side connecting plate 32 and an application block 33.
The wheel edge connecting disc 32 is connected with the side plate 31, the wheel edge connecting disc 32 is provided with a connecting position, the connecting position is used for being connected with a wheel hub, the wheel edge connecting disc 32 is detachably connected with the side plate 31, different embedded wheel edge connecting discs 32 can be replaced through the connecting position to be connected with different axles, and the motion states of the axles with different specifications are simulated. As shown in fig. 4, the wheel-side connecting plate 32 has a plurality of threaded holes spaced apart in the circumferential direction, and the side plate 31 has a plurality of connecting holes corresponding to the plurality of threaded holes of the wheel-side connecting plate one by one, so that the wheel-side connecting plate 32 and the side plate 31 can be fixed by a plurality of bolts.
The force application block 33 is connected with the side plate 31, the force application block 33 is used for being connected with the output end of the loading mechanism, pressure applied to the force application block 33 by the loading mechanism can be transmitted to the wheel edge connecting disc 32 through the side plate 31, and then transmitted to the wheel hub through the wheel edge connecting disc 32, and the stress state of the wheel hub is simulated.
Wherein, sideboard 31 is equipped with rectangular hole, and rectangular hole is along vertical extension, and application of force piece 33 links to each other with sideboard 31 through the threaded connection spare that runs through rectangular hole to but selective regulation application of force piece 33's position, and then adjustable loading mechanism is to the application of force position of wheel hub, realizes simulating different tire offset.
As shown in fig. 4, the force application block 33 includes end plates 331 on two sides, first force-bearing plates 332 and second force-bearing plates 333, the first force-bearing plates 332 are connected between the two end plates 331, the second force-bearing plates 333 are connected between the two end plates 331, as shown in fig. 4, the number of the first force-bearing plates 332 is two, the two first force-bearing plates 332 are arranged in a vertical direction, the second force-bearing plates 333 are connected between the two first force-bearing plates 332, and the first force-bearing plates 332, the second force-bearing plates 333 and the end plates 331 are perpendicular to each other in pairs, as shown in fig. 4, one pair of opposite sides of the second force-bearing plates 333 are respectively connected with the two end plates 331, and the other pair of opposite sides of the second force-bearing plates 333 are respectively connected with the two first force-bearing plates 332.
As shown in fig. 4, one end plate 331 is connected to the side plate 31, a normal line of the first force-receiving plate 332 is along a horizontal direction, and the first force-receiving plate 332 is used for being connected to the horizontal loader 21 of the loading mechanism, the horizontal loader 21 can apply a pressure along the horizontal direction to the hub through the first force-receiving plate 332, a normal line of the second force-receiving plate 333 is along a vertical direction, and the second force-receiving plate 333 is used for being connected to the vertical loader 22 of the loading mechanism, and the vertical loader 22 can apply a pressure along the vertical direction to the hub through the second force-receiving plate 333. Therefore, the vertical force and the horizontal force applied to the wheel in the actual running process can be simulated, and the accuracy and the reliability of the test are improved.
In some embodiments, as shown in fig. 5 and 6, the tie rod fixing bracket 4 includes: a bottom plate 41, a top plate 42 and a sleeve 43.
As shown in fig. 5, the sleeve 43 is connected between the bottom plate 41 and the top plate 42, the bottom plate 41 is adapted to be clamped between the leaf spring and the vehicle frame by a connecting member, for example, the bottom plate 41 may be clamped between the leaf spring and the vehicle frame by a U-bolt to fix the tie rod fixing bracket 4 relative to the leaf spring and the vehicle frame. The sleeve 43 is used for the cover to establish outside drag link 8, and bottom plate 41 is equipped with a plurality of screw holes, and roof 42 is equipped with a plurality of screw holes, but the setting of a plurality of screw holes of bottom plate 41 and a plurality of screw holes of roof 42 one-to-one to run through the screw hole through the bolt, in order to link to each other roof 42 and bottom plate 41 are fixed, the sleeve fastens with drag link 8, and then with drag link 8 and drag link fixed bolster 4 stable connection, from this, can be fixed firmly with the roof beam of drag link 8 and frame.
In some embodiments, the front knuckle arm ball pin simulation mount 5 includes: a support plate 51 and a pin 52.
The supporting plate 51 is provided with a flange 511, the flange 511 and the supporting plate 51 are formed into a bent shape, the flange 511 is provided with a notch to form a first sensor mounting position 512, as shown in fig. 7, one end of the sensor 7 extends into the notch and is fixedly connected with the flange 511, and the position of the connecting part in the notch is adjustable, so that the purpose of simulating the technical states of different knuckle arms can be realized by adjusting the connecting position of the sensor 7 and the flange.
The pin shaft 52 is connected with one side of the support plate 51, which is far away from the flange 511, and the pin shaft 52 is used for being connected with the axle knuckle arm, so that when the axle knuckle arm displaces, the pin shaft 52 drives the support plate 51 and the flange 511 to simultaneously displace, and one end of the sensor 7 detects the displacement of the flange 511, thereby simulating the technical state of the knuckle arm.
In some embodiments, as shown in fig. 9-10, the rocker ball pin point simulation bracket 6 comprises a first plate 61 and a second plate 62, the first plate 61 and the second plate 62 are connected, the first plate 61 and the second plate 62 form a bent shape, the first plate 61 has a mounting position 611 for connecting with a vehicle frame, the second plate 62 has a mounting groove, the mounting groove forms a sensor second mounting position 621, and the other end of the sensor 7 extends into the mounting groove and is fixedly connected with the second plate 62. The number of the mounting positions 611 of the first plate 61 is multiple, and the multiple mounting positions 611 can be connected with different positions of the vehicle frame, so that the sensor 7 can be connected with the multiple different positions of the vehicle frame through the steering rocker ball pin point simulation support 6, and further the technical states of different rocker states can be simulated.
The invention further provides a test method for the suspension steering motion interference.
The test method for the suspension steering motion interference according to the embodiment of the invention can be realized by using the suspension steering motion interference test bench 100 of any one of the embodiments, and comprises the following steps;
firstly assembling the test piece assembly, and assembling the plate spring on the frame together with the transverse pull rod fixing support 4, namely, firstly installing the transverse pull rod fixing support 4 on the plate spring, and then installing the transverse pull rod fixing support 4 and the plate spring on the frame simultaneously, or of course, installing the plate spring on the frame firstly and then installing the transverse pull rod fixing support 4 on the plate spring; the axle is assembled to the middle of the plate spring, the plate spring is connected with a beam of the axle, the transverse pull rod 8 is fixed on the transverse pull rod fixing support 4, the plate spring is fastened with the beam of the frame by using U-shaped bolts, and meanwhile, the transverse pull rod 8 is fixed, so that the rotational freedom degree of the axle is completely limited.
Then, placing the whole set of test piece on the test bed main body, and mounting the frame on a ground flat iron 11 of the test bed main body through a T-shaped bolt and a base plate; mounting a wheel edge force application assembly 3, correcting the horizontal position of a force application disc through an angle instrument after the wheel edge force application assembly 3 is mounted, and locking a brake drum through adjusting a brake mechanism of a front axle to prevent wheel edge rotation (the simulated tire radius of the force application disc is adjusted to be in a state of being consistent with a real vehicle); the loading mechanism is installed for connection, namely a vertical loading machine 22 and a horizontal loading machine 21 are installed, and the position of the loading mechanism is adjusted according to the offset distance of the wheel so that the loading mechanism is connected with the wheel edge force application assembly 3;
further, mounting a knuckle arm ball pin simulation bracket; installing a rocker arm ball pin simulation bracket; the position of a bracket of the sensor 7 is adjusted, so that the ball pin point of the sensor 7 is consistent with the actual ball pin installation point of the vehicle, and the relative position of the sensor 7 is correspondingly adjusted when the state is changed; and starting the loading mechanism to perform test simulation.
Wherein, step start-up loading mechanism includes: starting the vertical loader 22 to apply vertical axial load simulation force to obtain a corresponding relation curve of the pull rod interference amount and the loading force when the wheel jumps, and starting the vertical loader 22 to apply vertical and horizontal axial load simulation force to the horizontal loader 21 to obtain a corresponding curve of the pull rod interference amount under different braking deceleration conditions.
Therefore, the simulation of the whole system can be carried out on the suspension steering motion interference of the whole vehicle, the motion interference quantity of the suspension steering system can be accurately measured, and the rack verification can be carried out at the initial stage of the whole vehicle development to carry out the proportioning setting. The difficulty of subsequent development of the whole vehicle is reduced, sufficient space is provided for optimization of related parts, and the overall improvement of the system performance is achieved. And various interference factors are discharged, and the steering pull rod interference caused by the deformation of the plate spring is tested independently. The test precision and accuracy are high, and meanwhile, parts basically consistent with the vehicle are adopted, so that the influence of various rigidities on the test effect is eliminated, and the test effect is kept consistent with the actual vehicle effect as far as possible.
The test piece used in the test process can not damage the body (the frame is not required to be intercepted under the condition of enough equipment space), all parts can be repeatedly reused, and the performance of the existing vehicle can be favorably subjected to background investigation analysis. The test platform can be rapidly set up at the beginning of the design of the new vehicle type scheme, the movement interference of the design hard point is reliably tested, and the later optimization of the vehicle type design is facilitated.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A suspension steering motion interference test rig (100), comprising:
the test bed main body is provided with a mounting position (611) for mounting a vehicle frame to be tested and an axle and a loading mechanism for applying loading force;
the wheel edge force application assembly (3) is suitable for being mounted on a wheel hub of an axle to be tested and is used for being connected with the output end of the loading mechanism;
the transverse pull rod fixing support (4) is used for fixing the transverse pull rod (8) to a beam of an axle;
the front axle knuckle arm ball pin simulation bracket (5) is suitable for being connected with an axle knuckle arm, and is provided with a first sensor mounting position (512);
steering rocker ball round pin point analog support (6), steering rocker ball round pin point analog support (6) be suitable for with the frame links to each other, and has sensor second installation position (621), the first installation position of sensor (512) with sensor second installation position (621) are used for linking to each other with sensor (7), sensor (7) are displacement sensor (7), just sensor (7) are shaft-like, the one end of sensor (7) with first installation position (512) link to each other, the other end of sensor (7) with second installation position (621) link to each other.
2. The suspension steer motion interferometry stand (100) of claim 1, wherein said wheel-side forcing assembly (3) comprises:
a sideboard (31);
the wheel-side connecting disc (32), the wheel-side connecting disc (32) is connected with the side plate (31), and the wheel-side connecting disc (32) is provided with a connecting position used for being connected with a wheel hub;
and the force application block (33), the force application block (33) is connected with the side plate (31) and is used for being connected with the output end of the loading mechanism.
3. The suspension steering motion interference test stand (100) of claim 2, wherein the wheel-side connecting plate (32) is detachably connected with the side plate (31).
4. The suspension steering motion interference test stand (100) according to claim 2, wherein the side plate (31) is provided with a vertically extending elongated hole, and the force application block (33) is connected to the side plate (31) by a threaded connection penetrating the elongated hole to selectively adjust the position of the force application block (33).
5. The suspension steering motion interference test stand (100) according to claim 2, wherein the force application block (33) comprises end plates (331) on two sides, a first force receiving plate (332) connected between the two end plates (331), and a second force receiving plate (333) connected between the two end plates (331), wherein one of the end plates (331) is connected with the side plate (31), a normal of the first force receiving plate (332) is in a horizontal direction and is used for being connected with a horizontal loader (21) of the loading mechanism, and a normal of the second force receiving plate (333) is in a vertical direction and is used for being connected with a vertical loader (22) of the loading mechanism.
6. The suspension steer motion interference test stand (100) of any one of claims 1 to 5, wherein the tie rod mount bracket (4) comprises: bottom plate (41), roof (42) and sleeve pipe (43), sleeve pipe (43) are connected bottom plate (41) between roof (42), bottom plate (41) be suitable for through the connecting piece centre gripping leaf spring with between the frame, sleeve pipe (43) are used for the cover to establish outside drag link (8).
7. The suspension steer motion interferometry stand (100) of any of claims 1-5, wherein said front knuckle arm ball pin simulation mount (5) comprises:
the sensor comprises a supporting plate (51), wherein the supporting plate (51) is provided with a flanging (511) which is formed into a bent shape with the supporting plate (51), and the flanging (511) is provided with a notch to form a first sensor mounting position (512);
the pin shaft (52) is connected with one side, away from the flanging (511), of the supporting plate (51) and is used for being connected with the axle knuckle arm.
8. The suspension steering motion interference test stand (100) of any one of claims 1-5, wherein the pitman ball pivot point simulation cradle (6) comprises:
a first plate (61) and a second plate (62) formed in a bent shape, the first plate (61) having a mounting location (611) for coupling with a vehicle frame, the second plate (62) having a mounting slot to form the sensor second mounting location (621).
9. A method of testing suspension steering motion interference using the suspension steering motion interference test stand (100) of any of claims 1-8, comprising the steps of:
assembling the test piece, assembling the plate spring on the frame together with the tie rod fixing bracket (4),
assembling an axle to the middle of the plate spring, connecting the plate spring with a beam of the axle, and fixing a transverse pull rod (8) on a transverse pull rod fixing support (4);
placing the whole set of test piece on a test bed main body, and mounting the frame on a ground iron (11) of the test bed main body;
a wheel edge force application assembly (3) is installed, the horizontal position of a force application disc is corrected through an angle instrument, and a brake drum is locked through adjusting a brake mechanism of a front axle to prevent the wheel edge from rotating;
a loading mechanism is installed, and the position of the loading mechanism is adjusted according to the offset distance of the wheels so that the loading mechanism is connected with the wheel edge force application assembly (3);
mounting a knuckle arm ball pin simulation bracket;
installing a rocker arm ball pin point simulation support;
the position of a bracket of the sensor (7) is adjusted, and the ball pin point of the sensor (7) is consistent with the actual ball pin mounting point of the vehicle;
the loading mechanism is started.
10. The method for testing suspension steering motion interference according to claim 9, wherein the loading mechanism comprises a horizontal loader (21) and a vertical loader (22), and the step of activating the loading mechanism comprises:
starting a vertical loading machine (22) to apply vertical axial load simulation force so as to obtain a corresponding relation curve of the pull rod interference amount and the loading force when the wheel jumps;
and starting the vertical loader (22) and the horizontal loader (21) to apply vertical and horizontal axial load simulation forces so as to obtain pull rod interference amount corresponding curves under different braking deceleration conditions.
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| US20230135131A1 (en) * | 2020-03-30 | 2023-05-04 | Brembo S.P.A. | Wheel load assembly for a dynamometer test bench and dynamometer test bench |
| CN111665064B (en) * | 2020-05-18 | 2022-05-17 | 东风汽车股份有限公司 | Commercial vehicle suspension system motion track whole vehicle measurement system and measurement method thereof |
| CN111638071B (en) * | 2020-06-12 | 2022-09-20 | 东风汽车股份有限公司 | Durability test bench for non-independent suspension |
| CN112924197B (en) * | 2021-03-25 | 2023-05-12 | 中国重汽集团济南动力有限公司 | Suspension deformation motion monitoring device and method |
| CN112903315B (en) * | 2021-04-13 | 2022-06-17 | 东营科技职业学院 | New energy automobile chassis load testing arrangement |
| CN113465937B (en) * | 2021-05-31 | 2022-08-26 | 东风汽车集团股份有限公司 | Brake system interference detection system based on K & C test bed and detection method thereof |
| CN114216695B (en) * | 2021-12-15 | 2024-03-15 | 方盛车桥(合肥)有限公司 | Front axle steering system fatigue test device |
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| CN102809491B (en) * | 2012-08-14 | 2014-09-17 | 柳州日高橡胶制品有限责任公司 | Method for detecting suspension shock absorption performance of automobile power assembly |
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| CN207081559U (en) * | 2017-07-26 | 2018-03-09 | 北京汽车研究总院有限公司 | A kind of suspension system long duration test loading device |
| CN108168901B (en) * | 2017-12-13 | 2020-01-31 | 天津英创汇智汽车技术有限公司 | Method, device and system for measuring vehicle braking deviation |
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