Turret load acquisition equipment and test system based on turret load acquisition equipment

Abstract

The invention discloses turret load acquisition equipment and a test system based on the turret load acquisition equipment. The turret load acquisition equipment comprises an adapter and a turret load acquisition equipment base body, the disc surface of the adapter is provided with a plurality of first bolt mounting holes, the inner edge of the adapter is a concave edge, and the concave edge is provided with a plurality of second bolt mounting holes; third bolt mounting holes corresponding to the first bolt mounting holes are formed in the disc surface of the base body; the inner edge of the base body is a flange which is matched with the concave edge; the flange is provided with a fourth bolt mounting hole corresponding to the second bolt mounting hole; a groove is formed in the turret load collecting device base body, a plurality of strain gauge bridges are evenly distributed in the groove, and the stress load of a turret in the Z-axis direction of a whole vehicle coordinate system is collected through the strain gauge bridges. According to the method, the problem that the simulation analysis precision cannot be guaranteed due to the fact that the existing turret load can only be obtained through virtual simulation analysis calculation is solved, and the stress load of the turret is accurately and rapidly measured.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle turret load testing, and more specifically, relates to a turret load acquisition device and a test system based on the turret load acquisition device. Background Art

[0002] With the continuous advancement of automobile R&D and manufacturing technology, users have higher and higher requirements for the fatigue durability of automobile structures. Virtual simulation methods are usually used in the design stage to evaluate the fatigue life of automobiles and improve fatigue durability.

[0003] The shock absorber is the most important part of the chassis suspension system, which can absorb vehicle vibration and alleviate the impact caused by the road surface. The wheels transfer the road load to the body through the suspension system and along the body-chassis connection point. At present, the simulation load input of structural durability body fatigue is mainly obtained by the following two methods: one is to use a mule cart to collect the road load spectrum of the test site, and then obtain it by virtual iteration; the other is to use virtual test site technology for load calculation. In order to achieve the durability performance of the whole vehicle at the ultimate cost, it is necessary to continuously improve the accuracy of load input, accurately simulate the load condition of the shock absorber seat, and accurately judge whether the strength and fatigue life of the mounting seat on the shock absorber and the local structure of the body shock absorber connection point and the body meet the performance requirements. At this stage, both load acquisition methods need to be completed with the help of virtual simulation. The load is quite different from the actual load data on the user's road, and there is a certain error with the actual vehicle test, which is easy to cause the structure to be "over-designed".

[0004] Therefore, in order to accurately obtain the load at the installation point of the vehicle body shock absorber seat and improve the simulation analysis accuracy of CAE (a simulation software), it is urgently necessary to develop a vehicle body shock absorber seat (referred to as turret, shock absorber and coil spring integrated) installation point load acquisition equipment to obtain the force load at the installation point of the vehicle body shock absorber seat.

[0005] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to propose a turret load acquisition device and a test system based on the turret load acquisition device, so as to accurately measure the force load of the turret in the Z-axis direction of the vehicle coordinate system, accurately and conveniently obtain the turret road load data, improve the accuracy of CAE simulation analysis, and realize the precise design of the vehicle body structure.

[0007] To achieve the above-mentioned purpose, the present invention proposes a turret load acquisition device and a test system based on the turret load acquisition device.

[0008] According to a first aspect of the present invention, a turret load acquisition device is provided, comprising:

[0009] The adapter is arranged between the vehicle body fixing support corresponding to the turret and the base of the turret load collection device, the adapter is a flange concave edge disk, the disk surface of the adapter is provided with a plurality of first bolt mounting holes evenly arranged along the circumference, and the first bolt mounting holes correspond one to one with the bolt mounting holes of the vehicle body fixing support; the inner edge of the adapter is a concave edge, and the concave edge is provided with a plurality of second bolt mounting holes evenly arranged along the circumference;

[0010] A turret load collection device substrate is arranged between a turret load collection device mounting bracket on the turret and the adapter, wherein the turret load collection device substrate is a flange flange disk, and a disk surface of the turret load collection device substrate is provided with a plurality of third bolt mounting holes evenly arranged along the circumference, and the third bolt mounting holes correspond one-to-one with the first bolt mounting holes and the bolt mounting holes on the mounting bracket; an inner edge of the turret load collection device substrate is a flange, and the flange corresponds to the concave edge; the flange is provided with a plurality of fourth bolt mounting holes evenly arranged along the circumference, and the fourth bolt mounting holes correspond one-to-one with the second bolt mounting holes; a groove is provided between the flange and the disk surface of the load collection device substrate, and a plurality of strain gauge bridges evenly arranged along the circumference are provided inside the groove, and the strain gauge bridge is electrically connected to the in-vehicle acquisition module, and the force load of the turret in the Z-axis direction of the whole vehicle coordinate system is collected through the strain gauge bridge.

[0011] Optionally, it also includes:

[0012] A plurality of first bolts, wherein the first bolts are sequentially passed through the second bolt mounting hole and the fourth bolt mounting hole, thereby fixing and connecting the adapter and the turret load collection device base to form the turret load collection device;

[0013] A plurality of second bolts are provided, wherein the second bolts are sequentially passed through the bolt mounting holes on the mounting bracket, the third bolt mounting holes, the first bolt mounting holes and the bolt mounting holes of the vehicle body fixing support, thereby fixing the turret and the turret load collection device to the vehicle body fixing support.

[0014] Optionally, each of the strain gauge bridges is constructed from two strain gauges, and all of the strain gauges have the same specifications and dimensions.

[0015] Optionally, the height of the groove is 1 / 3 to 1 / 4 of the thickness of the base of the turret load collection device, and the width of the groove is the thickness of the base of the turret load collection device.

[0016] Optionally, the radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located is:

[0017] r2=(r1-r)*0.5,

[0018] Among them, r2 is the radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located, r1 is the radius of the arc where the inner wall of the adapter concave edge is located, and r is the radius of the arc where the inner edge of the adapter is located.

[0019] Optionally, the radius of the arc where the inner edge of the base of the turret load collection device is located is:

[0020] R = (1.1-1.2) * r;

[0021] Where r is the radius of the arc where the inner edge of the adapter is located.

[0022] Optionally, the radius of the arc where the inner wall of the adapter concave edge is located is:

[0023] r1=R+b;

[0024] Among them, R is the radius of the arc where the inner edge of the base of the turret load collection device is located, and b is the width of the groove of the base of the turret load collection device.

[0025] Optionally, the diameters of the first bolt mounting hole and the third bolt mounting hole are both the first diameter, the diameters of the second bolt mounting hole and the third bolt mounting hole are both the second diameter, and the first diameter is greater than the second diameter.

[0026] Optionally, the first bolt mounting hole and the third bolt mounting hole are both U-shaped bolt mounting holes or circular bolt mounting holes.

[0027] According to a second aspect of the present invention, a test system based on a turret load acquisition device is proposed, comprising the turret load acquisition device according to any one of the first aspects, wherein the turret load acquisition device is used to collect the force load of the turret in the Z-axis direction in the vehicle coordinate system on an actual road to obtain a turret road load spectrum; and

[0028] A wheel six-component force sensor is installed and fixed on the wheel of the vehicle. The wheel six-component force sensor is used to collect the force loads of the wheel in three directions of X-axis, Y-axis and Z-axis in the vehicle coordinate system on the actual road to obtain the wheel road load spectrum;

[0029] A calibration module, used for calibrating the wheel six-component force sensor and the turret load acquisition device respectively based on the original wheel road load spectrum and the original turret road load spectrum before acquiring the wheel road load spectrum and the turret road load spectrum on an actual road;

[0030] A preprocessing module, used for preprocessing the wheel road load spectrum and the turret road load spectrum;

[0031] A test module is used to perform vehicle body strength and fatigue life simulation tests based on the wheel road load spectrum and the turret road load spectrum that have completed the preprocessing.

[0032] The beneficial effects of the present invention are as follows: the turret load collection device of the present invention comprises an adapter and a turret load collection device base, the adapter and the turret load collection device base are fixedly connected through the second bolt mounting hole on the adapter and the fourth bolt mounting hole on the turret load collection device base; the turret load collection device is fixedly connected between the turret load collection device mounting bracket on the turret and the vehicle body fixed support corresponding to the turret through the first bolt mounting hole on the adapter and the third bolt mounting hole on the turret load collection device base, and the force load of the turret in the Z-axis direction of the vehicle coordinate system is measured by the strain gauge bridge built into the groove of the turret load collection device base, which solves the problem that the existing turret load can only be obtained through virtual simulation analysis and calculation, which is greatly different from the actual load data on the user's road, the accuracy is not high, and the load acquisition time is long, resulting in the CAE simulation analysis accuracy cannot be guaranteed, thereby causing the problem of "over-design" of the vehicle body structure; it realizes accurate and rapid measurement of the force load of the turret, and then accurately and conveniently obtains the turret road load data, improves the CAE simulation analysis accuracy, realizes the precise design of the vehicle body structure, and better realizes the structural durability performance at the extreme cost.

[0033] The system of the present invention has other characteristics and advantages, which will be apparent from the drawings incorporated herein and the following detailed description, or will be described in detail in the drawings incorporated herein and the following detailed description, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which like reference numerals generally represent like components.

[0035] Figure 1 A schematic structural diagram of a turret load acquisition device according to embodiment 1 of the present invention is shown.

[0036] Figure 2 A schematic diagram of the strain gauge bridge arrangement of a turret load test sensor substrate according to Embodiment 1 of the present invention is shown.

[0037] Figure 3 A schematic diagram of the assembly of a turret load acquisition device according to Embodiment 1 of the present invention is shown.

[0038] Figure 4A side sectional view of a turret load test sensor base according to Embodiment 1 of the present invention is shown.

[0039] Figure 5 A front view of a turret load test sensor base according to Embodiment 1 of the present invention is shown.

[0040] Figure 6 A side sectional view of an adapter according to Embodiment 1 of the present invention is shown.

[0041] Figure 7 A front view of an adapter according to Embodiment 1 of the present invention is shown. DETAILED DESCRIPTION

[0042] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0043] A turret load acquisition device according to the present invention comprises:

[0044] The adapter is arranged between the vehicle body fixed support corresponding to the turret and the base of the turret load collection device. The adapter is a flange concave edge disk. The disk surface of the adapter is provided with a plurality of first bolt mounting holes evenly arranged along the circumference. The first bolt mounting holes correspond one to one with the bolt mounting holes of the vehicle body fixed support. The inner edge of the adapter is a concave edge. The concave edge is provided with a plurality of second bolt mounting holes evenly arranged along the circumference.

[0045] The turret load collection device base is arranged between the turret load collection device mounting bracket and the adapter on the turret. The turret load collection device base is a flange flange disk. The disk surface of the turret load collection device base is provided with a plurality of third bolt mounting holes evenly arranged along the circumference, and the third bolt mounting holes correspond one-to-one with the first bolt mounting holes and the bolt mounting holes on the mounting bracket; the inner edge of the turret load collection device base is a flange, and the flange corresponds to the concave edge; the flange is provided with a plurality of fourth bolt mounting holes evenly arranged along the circumference, and the fourth bolt mounting holes correspond one-to-one with the second bolt mounting holes; a groove is provided between the flange and the disk surface of the load collection device base, and a plurality of strain gauge bridges evenly arranged along the circumference are provided inside the groove, and the strain gauge bridge is electrically connected to the in-vehicle acquisition module, and the force load of the turret in the Z-axis direction of the whole vehicle coordinate system is collected through the strain gauge bridge.

[0046] Specifically, the turret load collection device of the present invention is composed of an adapter and a turret load collection device base body, the adapter is a flange concave disk, the disk surface of the adapter is provided with a plurality of first bolt mounting holes evenly arranged along the circumference, the first bolt mounting holes correspond one to one with the bolt mounting holes of the vehicle body fixing support, the inner edge of the adapter is a concave edge, the horizontal surface of the concave edge is provided with a plurality of second bolt mounting holes evenly arranged along the circumference, the turret load collection device base body is a flange flange disk, the turret load collection device base body is a flange flange disk, the disk surface of the turret load collection device base body is provided with a plurality of third bolt mounting holes evenly arranged along the circumference, and the third bolt mounting holes correspond to the first bolt mounting holes and the mounting bracket. The bolt mounting holes correspond one to one, the inner edge of the turret load collection device base is a flange, the flange corresponds to the concave edge, the flange is provided with a plurality of fourth bolt mounting holes evenly arranged along the circumference, and the fourth bolt mounting holes correspond one to one with the second bolt mounting holes; during installation, first align the concave edge of the adapter with the flange of the turret load collection device base, then put the adapter and the turret load collection device base together, and align the fourth bolt mounting holes with the second bolt mounting holes one by one, and combine the adapter and the turret load collection device base by passing bolts through the fourth bolt mounting holes and the second bolt mounting holes one by one and locking them, at this time, the third bolt mounting holes are also in a one-to-one relationship with the first bolt mounting holes Corresponding state; align the third bolt mounting hole with the bolt mounting hole of the turret load collection device mounting bracket on the turret one by one, pass the bolts through the bolt mounting hole, the third bolt mounting hole and the first bolt mounting hole of the turret load collection device mounting bracket in sequence, combine the turret load collection device with the turret, and then align the bolts with the bolt mounting holes of the vehicle body fixing support corresponding to the turret and tighten them to fix the turret load collection device and the turret on the vehicle body; a groove is provided between the flange of the load collection device base and the disk surface of the load collection device base, and a plurality of strain gauge bridges are arranged evenly along the circumference inside the groove, and the strain gauge bridge is electrically connected to the in-vehicle collection module. When the turret is subjected to force, The turret load collection device is deformed. At this time, the strain gauge bridge is used to collect the force load of the turret in the Z-axis direction of the vehicle coordinate system to obtain the turret road load spectrum. This solves the problem that the existing turret load can only be obtained through virtual simulation analysis and calculation, which is quite different from the actual load data on the user's road, has low accuracy, and takes a long time to obtain the load, resulting in the inability to guarantee the accuracy of CAE simulation analysis, resulting in the problem of "over-design" of the body structure; it realizes accurate and rapid measurement of the force load on the turret, and then accurately and conveniently obtains the turret road load data, improves the accuracy of CAE simulation analysis, realizes precise design of the body structure, and better achieves structural durability performance at the ultimate cost.

[0047] In one example, it also includes:

[0048] A plurality of first bolts, wherein the first bolts are sequentially passed through the second bolt mounting hole and the fourth bolt mounting hole, thereby fixing and connecting the adapter and the turret load collection device base to form the turret load collection device;

[0049] A plurality of second bolts are passed through the bolt mounting holes, the third bolt mounting holes, the first bolt mounting holes and the bolt mounting holes of the vehicle body fixing support in sequence, thereby fixing the turret and the turret load collection device to the vehicle body fixing support.

[0050] Specifically, the adapter and the turret load collection device base are first fixedly connected by multiple first bolts to form a turret load collection device, and then the turret load collection device is connected to the turret by multiple second bolts. Finally, the turret load collection device and the turret are fixed to the vehicle body by multiple second bolts, wherein the turret load collection device is located between the turret and the vehicle body fixed support.

[0051] In one example, each strain gauge bridge is constructed from two strain gauges, and all strain gauges have the same specification size.

[0052] Specifically, each strain gauge bridge is built by two strain gauges, and the strain gauge is a component composed of a sensitive grid and the like for measuring strain. The working principle of the resistance strain gauge is based on the strain effect, that is, when the conductor or semiconductor material is mechanically deformed under the action of external force, its resistance value changes accordingly. This phenomenon is called "strain effect". When used, it is firmly pasted on the measuring point of the component. After the component is subjected to force, the measuring point is strained, and the sensitive grid is also deformed and its resistance changes. The resistance change is then measured by a special instrument and converted into the strain value of the measuring point. The present invention evenly arranges multiple strain gauge bridges inside the groove, and the specifications and dimensions of the multiple strain gauge bridges are the same, which can accurately measure the turret load and is conducive to calculating the strain value of each strain gauge bridge. In order to more accurately measure the turret load, the strain gauge bridge can be completely filled in the installation point in the groove, that is, the bottom of the strain gauge bridge contacts the bottom of the groove, the two sides of the strain gauge bridge contact the two side walls of the groove at the same time, and the top of the strain gauge bridge contacts the disk surface of the adapter.

[0053] For example, the present invention has three strain gauge bridges, each of which is built with two strain gauges. The six strain gauges have the same specifications and sizes. The strain gauge bridge is pasted and fixed to the bottom of the groove of the base of the turret load collection device. The two sides of the strain gauge bridge are in contact with the two side walls of the groove at the same time, and the top of the strain gauge bridge is in contact with the disk surface of the adapter.

[0054] In one example, the height of the groove is 1 / 3 to 1 / 4 of the thickness of the base of the turret load collection device, and the width of the groove is the thickness of the base of the turret load collection device.

[0055] Specifically, the height of the groove of the turret load collection device base is 1 / 3 to 1 / 4 of the thickness of the turret load collection device base, and the width of the groove is the thickness of the turret load collection device base. This setting can ensure that the connection between the turret load collection device base and the adapter is reliable and scientific and reasonable.

[0056] In one example, the radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located is:

[0057] r2=(r1-r)*0.5,

[0058] Among them, r2 is the radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located, r1 is the radius of the arc where the inner wall of the adapter concave edge is located, and r is the radius of the arc where the inner edge of the adapter is located.

[0059] Specifically, setting the positions of the second bolt mounting hole and the fourth bolt mounting hole according to the above formula can ensure that the connection between the turret load acquisition device base and the adapter is reliable, scientific and reasonable.

[0060] In one example, the radius of the arc where the inner edge of the base of the turret load collection device is located is:

[0061] R = (1.1-1.2) * r;

[0062] Where r is the radius of the arc where the inner edge of the adapter is located.

[0063] Specifically, setting the inner radius of the turret load collection device base according to the above formula can ensure that the connection between the turret load collection device base and the adapter is reliable, scientific and reasonable.

[0064] In one example, the radius of the arc of the inner wall of the adapter concave edge is:

[0065] r1=R+b;

[0066] Among them, R is the radius of the arc where the inner edge of the base of the turret load collection device is located, and b is the width of the groove of the base of the turret load collection device.

[0067] Specifically, setting the concave edge of the adapter according to the above formula can ensure that the connection between the turret load collection device base and the adapter is reliable and scientific and reasonable.

[0068] In one example, diameters of the first bolt mounting hole and the third bolt mounting hole are both a first diameter, diameters of the second bolt mounting hole and the third bolt mounting hole are both a second diameter, and the first diameter is greater than the second diameter.

[0069] In one example, the first bolt mounting hole and the third bolt mounting hole are both U-shaped bolt mounting holes or round bolt mounting holes.

[0070] Specifically, the first bolt mounting hole and the third bolt mounting hole are both U-shaped bolt mounting holes or round bolt mounting holes. The round bolt mounting holes are not universal and are customized for specific vehicle models; the U-shaped bolt holes can match different turrets and mounting bracket structures on the turrets and are universal.

[0071] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to be limiting of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention may be combined with each other without conflict.

[0072] Example 1

[0073] like Figure 1-Figure 7 As shown, this embodiment provides a turret load acquisition device, including:

[0074] The adapter 201 and the turret load test sensor base 202 are provided with three bolt mounting holes 206 and six bolt mounting holes 207 evenly distributed along the circumference on the adapter 201; the turret load test sensor base 202 is provided with three bolt mounting holes 205 evenly distributed along the circumference, a strain gauge bridge mounting groove 204 and a flange flange 208, the flange flange 208 is 10 mm wide and 9 mm high, and six bolt mounting holes 203 with a diameter of d=5 mm are evenly distributed along the circumference on the flange flange 208, and the bolt mounting holes 203 correspond to the bolt mounting holes 207 one by one. The disk surface of the adapter 201 is provided with a concave edge 210 matching the flange flange 208 to ensure that the turret load test sensor 2 02 is reliably connected to the adapter 201; the bolt mounting hole 206 corresponds to the bolt mounting hole 205 one by one; three evenly distributed strain gauge bridges 209 are arranged in the strain gauge bridge mounting groove 204, and the leads of the strain gauge bridge 209 are connected to the data acquisition equipment in the vehicle; the bolt mounting hole 205 and the bolt mounting hole 206 of the present embodiment are both U-shaped bolt mounting holes, and circular bolt mounting holes can also be used. The diameter of the circular bolt mounting hole is generally 8mm or 10mm, which is not universal and needs to be customized for specific vehicle models, while the U-shaped bolt mounting hole can match different turrets and vehicle body fixing supports and is universal; the size, quantity and arrangement of the bolt mounting hole 206 match the bolt mounting hole of the vehicle body fixing support 1. The bolt mounting holes 205 are evenly distributed along the circumference of the base plane of the turret load test sensor base 202. When the axis angle between two adjacent bolt mounting holes 205 is 120°, three bolt mounting holes 205 can be evenly arranged; when the axis angle between two adjacent bolt mounting holes 205 is 180°, two bolt mounting holes 205 can be evenly arranged. The bolt mounting holes 205 match the bolt mounting hole structure of the mounting support 3 on the turret. The bolts 4 are passed through the bolt mounting holes, bolt mounting holes 205, and bolt mounting holes 206 of the mounting support 3 on the turret in sequence, and finally fixed to the bolt mounting holes of the vehicle body fixed support 1, and then the turret load acquisition device 2 is fixed between the mounting support 3 on the turret and the vehicle body fixed support 1. The size of the strain gauge bridge mounting groove 204 is related to the strain gauge model. To ensure the reliability of the connection between the substrate and the adapter, the groove height h is 1 / 3 to 1 / 4 of the thickness t of the turret load test sensor substrate 202, t = 9 mm; the groove width b is equal to the substrate thickness t, the radius r2 of the arc where the center of the 6 bolt mounting holes 206 is located, the radius R of the central circular hole of the turret load test sensor substrate 202, and the radius r of the central circular hole of the adapter 201 satisfy r2 = (r1-r)*0.5, R = (1.1~1.2)*r, R+b = r1, where r1 is the radius of the concave edge 210, ensuring that the turret load test sensor substrate 202 and the adapter 201 are reliably connected.The turret load collection device 2 of this embodiment solves the problem that the existing turret load can only be obtained through virtual simulation analysis and calculation, which is greatly different from the actual load data on the user's road, has low accuracy, and takes a long time to obtain the load, resulting in the inability to guarantee the accuracy of CAE simulation analysis, thereby causing the problem of "over-design" of the vehicle body structure; it achieves accurate and rapid measurement of the force load on the turret, and then accurately and conveniently obtains the turret road load data, improves the accuracy of CAE simulation analysis, realizes precise design of the vehicle body structure, and better achieves structural durability performance at the ultimate cost.

[0075] Example 2

[0076] This embodiment provides a test system based on a turret load collection device, including the turret load collection device described in Embodiment 1, the turret load collection device is used to collect the force load of the turret in the Z-axis direction in the vehicle coordinate system on an actual road to obtain the turret road load spectrum; and

[0077] The wheel six-component force sensor is installed and fixed on the wheel of the vehicle. The wheel six-component force sensor is used to collect the force loads of the wheel in the three directions of X-axis, Y-axis and Z-axis in the vehicle coordinate system on the actual road to obtain the wheel road load spectrum;

[0078] A calibration module, used for calibrating the wheel six-component force sensor and the turret load acquisition device based on the original wheel road load spectrum and the original turret road load spectrum before collecting the wheel road load spectrum and the turret road load spectrum on the actual road;

[0079] A preprocessing module, used for preprocessing the wheel road load spectrum and the turret road load spectrum;

[0080] The test module is used to perform vehicle body strength and fatigue life simulation tests based on the preprocessed wheel road load spectrum and turret road load spectrum.

[0081] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A turret load acquisition device, characterized in that: include: The adapter is arranged between the vehicle body fixing support corresponding to the turret and the base of the turret load collection device, the adapter is a flange concave edge disk, the disk surface of the adapter is provided with a plurality of first bolt mounting holes evenly arranged along the circumference, and the first bolt mounting holes correspond one to one with the bolt mounting holes of the vehicle body fixing support; the inner edge of the adapter is a concave edge, and the concave edge is provided with a plurality of second bolt mounting holes evenly arranged along the circumference; A turret load collection device substrate is arranged between a turret load collection device mounting bracket on the turret and the adapter, wherein the turret load collection device substrate is a flange flange disk, and a disk surface of the turret load collection device substrate is provided with a plurality of third bolt mounting holes evenly arranged along the circumference, and the third bolt mounting holes correspond one-to-one with the first bolt mounting holes and the bolt mounting holes on the mounting bracket; an inner edge of the turret load collection device substrate is a flange, and the flange corresponds to the concave edge; the flange is provided with a plurality of fourth bolt mounting holes evenly arranged along the circumference, and the fourth bolt mounting holes correspond one-to-one with the second bolt mounting holes; a groove is provided between the flange and the disk surface of the load collection device substrate, and a plurality of strain gauge bridges evenly arranged along the circumference are provided inside the groove, and the strain gauge bridge is electrically connected to the in-vehicle acquisition module, and the force load of the turret in the Z-axis direction of the whole vehicle coordinate system is collected through the strain gauge bridge.

2. The turret load acquisition device according to claim 1, characterized in that: Also includes: A plurality of first bolts, wherein the first bolts are sequentially passed through the second bolt mounting hole and the fourth bolt mounting hole, thereby fixing and connecting the adapter and the turret load collection device base to form the turret load collection device; A plurality of second bolts are provided, wherein the second bolts are sequentially passed through the bolt mounting holes on the mounting bracket, the third bolt mounting holes, the first bolt mounting holes and the bolt mounting holes of the vehicle body fixing support, thereby fixing the turret and the turret load collection device to the vehicle body fixing support.

3. The turret load acquisition device according to claim 1, characterized in that: Each of the strain gauge bridges is constructed from two strain gauges, and all of the strain gauges have the same specifications and dimensions.

4. The shock absorber load turret load acquisition device according to claim 1, characterized in that: The height of the groove is 1 / 3 to 1 / 4 of the thickness of the base of the turret load collection device, and the width of the groove is the thickness of the base of the turret load collection device.

5. The turret load acquisition device according to claim 1, characterized in that: The radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located is: r2＝(r1-r)*0.5， Among them, r2 is the radius of the arc where the center points of the second bolt mounting hole and the fourth bolt mounting hole are located, r1 is the radius of the arc where the inner wall of the adapter concave edge is located, and r is the radius of the arc where the inner edge of the adapter is located.

6. The turret load acquisition device according to claim 1, characterized in that: The radius of the arc where the inner edge of the base of the turret load collection device is located is: R＝(1.1～1.2)*r； Where r is the radius of the arc where the inner edge of the adapter is located.

7. The turret load acquisition device according to claim 5, characterized in that: The radius of the arc where the inner wall of the adapter concave edge is located is: r1=R+b; Among them, R is the radius of the arc where the inner edge of the base of the turret load collection device is located, and b is the width of the groove of the base of the turret load collection device.

8. The turret load acquisition device according to claim 1, characterized in that: The diameters of the first bolt mounting hole and the third bolt mounting hole are both the first diameter, the diameters of the second bolt mounting hole and the third bolt mounting hole are both the second diameter, and the first diameter is greater than the second diameter.

9. The turret load acquisition device according to claim 1, characterized in that: The first bolt mounting hole and the third bolt mounting hole are both U-shaped bolt mounting holes or round bolt mounting holes.

10. A test system based on a turret load acquisition device, characterized in that: The turret load collection device comprises the turret load collection device according to any one of claims 1 to 9, wherein the turret load collection device is used to collect the force load of the turret in the Z-axis direction in the vehicle coordinate system on an actual road to obtain the turret road load spectrum; as well as, A wheel six-component force sensor is installed and fixed on the wheel of the vehicle. The wheel six-component force sensor is used to collect the force loads of the wheel in three directions of X-axis, Y-axis and Z-axis in the vehicle coordinate system on the actual road to obtain the wheel road load spectrum; A calibration module, used for calibrating the wheel six-component force sensor and the turret load acquisition device respectively based on the original wheel road load spectrum and the original turret road load spectrum before acquiring the wheel road load spectrum and the turret road load spectrum on an actual road; A preprocessing module, used for preprocessing the wheel road load spectrum and the turret road load spectrum; A test module is used to perform vehicle body strength and fatigue life simulation tests based on the wheel road load spectrum and the turret road load spectrum that have completed the preprocessing.

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