Test equipment for frame assembly

Abstract

The utility model relates to test equipment of a frame assembly, and relates to the technical field of automobiles. The frame assembly comprises a frame, and a first mounting piece and a second mounting piece which are fixed on the frame; the test equipment comprises a support, a fixing frame, a limiting assembly and a loading assembly. The bracket is used for supporting the frame assembly; the fixing frame is detachably connected with the frame; the limiting assembly is arranged on the support and detachably connected with the first installation piece. The loading assembly is arranged on the support and detachably connected with the second installation piece, and the loading assembly is used for applying loads to the frame through the second installation piece. The installation state of the frame can be simulated, and a fatigue test is carried out.

Description

Technical Field

[0001] The present disclosure relates to the field of automobile technology, and in particular to a test device for a vehicle frame assembly. Background Art

[0002] The frame is an essential component in a car. Its fatigue resistance is directly related to the service life and safety of the car. With the adoption of technologies such as one-piece casting, the integration level of the frame has been improved and the size has increased. How to verify the fatigue resistance of the frame is an urgent problem that needs to be solved. Summary of the Invention

[0003] The present disclosure provides a test device for a vehicle frame assembly, which can simulate the installation state of the vehicle frame and perform fatigue tests.

[0004] According to one aspect of the present disclosure, a test device for a vehicle frame assembly is provided, wherein the vehicle frame assembly includes a vehicle frame and a first mounting member and a second mounting member fixed to the vehicle frame; the test device includes:

[0005] a bracket for supporting the frame assembly;

[0006] a fixing frame, detachably connected to the vehicle frame;

[0007] a limiting assembly, provided on the bracket and detachably connected to the first mounting member;

[0008] A loading assembly is provided on the bracket and is detachably connected to the second mounting member. The loading assembly is used to apply a load to the vehicle frame through the second mounting member.

[0009] In an exemplary embodiment of the present disclosure, the limiting assembly includes:

[0010] A base, provided on the bracket;

[0011] The clamping mechanism includes two clamping pieces arranged opposite to each other, and the first mounting member can be placed between the two clamping pieces;

[0012] A fastening mechanism is provided on the base and connected to the two clips; the fastening mechanism is used to enable the clips to clamp the first mounting member.

[0013] In an exemplary embodiment of the present disclosure, the fastening mechanism includes:

[0014] A fastening screw is provided on the base and passes through the two clips;

[0015] A fastening nut is threadedly connected to the fastening screw, and the fastening nut is used to squeeze the clip to tighten the first mounting member.

[0016] In an exemplary embodiment of the present disclosure, the clip includes a clamping portion and a connecting portion, the clamping portion is arc-shaped, and the bending directions of the clamping portions of the two clips are opposite to each other; the connecting portion is connected to the end of the clamping portion; the screw passes through the connecting portions of the two clips; the clamping portions of the two clips are located between the base and the fastening nut.

[0017] In an exemplary embodiment of the present disclosure, the base includes a bottom plate and a side plate; the bottom plate is provided on the bracket, and the side plate is provided on a surface of the bottom plate away from the bracket; the fastening screw passes through the side plate;

[0018] The base plate is provided with a slide groove; the test equipment also includes a locking member, which passes through the slide groove and is connected to the bracket; the locking member can lock and unlock the base plate and the bracket, and after unlocking, the base plate can slide along the extension direction of the slide groove.

[0019] In an exemplary embodiment of the present disclosure, the base further includes a rib plate, which is provided on a surface of the bottom plate away from the bracket and is connected to the side plate.

[0020] In an exemplary embodiment of the present disclosure, the loading assembly includes:

[0021] The telescopic device is provided on the bracket and connected to the second mounting member, and is used for applying a load to the vehicle frame to move it closer to and away from the fixing frame.

[0022] In an exemplary embodiment of the present disclosure, the telescopic device includes:

[0023] A hydraulic cylinder is provided on the bracket, and a piston rod of the hydraulic cylinder is connected to the second mounting member.

[0024] In an exemplary embodiment of the present disclosure, the loading component further includes:

[0025] The load detection element is provided on the telescopic device and is used to detect the load applied by the telescopic device.

[0026] In an exemplary embodiment of the present disclosure, the bracket includes a plurality of columns and a support beam connecting at least some of the columns; the fixing bracket is located on a side of the support beam close to the vehicle frame;

[0027] The column includes a limiting column and a loading column. The limiting component is arranged at the top end of the limiting column, and the loading component is arranged at the top end of the loading column.

[0028] The test equipment disclosed herein can simulate the installation method of a vehicle frame, apply a load to the frame that simulates the frame during vehicle driving, conduct fatigue tests, and verify the durability of the frame. Specifically, the frame can be placed on a bracket and connected to a fixed bracket as a whole to simulate the rigidity of an actual vehicle. A limiting assembly can be used to limit the position of a first mounting member, thereby limiting the vehicle frame. A loading assembly can apply a load to the frame through a second mounting member. By adjusting the load, the load borne by an actual vehicle can be simulated.

[0029] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0031] Figure 1 A top view of an embodiment of a frame assembly.

[0032] Figure 2 A top view of one embodiment of the disclosed test apparatus and frame assembly.

[0033] Figure 3 for Figure 2 Top view of the test equipment.

[0034] Figure 4 for Figure 2 Side view of the test equipment and frame assembly.

[0035] Figure 5 for Figure 2 Side view of the test equipment.

[0036] Figure 6 for Figure 2 Top view of the center limit assembly.

[0037] Description of reference numerals:

[0038] 1a, frame assembly; 11a, frame; 111a, suspension beam; 112a, connection structure; 12a, first mounting member; 13a, second mounting member;

[0039] 1. Bracket; 11. Column; 111. Limit column; 112. Loading column; 12. Support beam;

[0040] 2. Fixed frame;

[0041] 3. Limiting assembly; 31. Base; 311. Bottom plate; 3111. Slide; 312. Side plate; 313. Rib; 32. Clip; 321. Clamping portion; 322. Connecting portion; 33. Fastening screw; 34. Fastening nut; 35. Limiting nut; 36. Locking member;

[0042] 4. Loading assembly; 41. Telescopic device; 42. Load detection element. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0044] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first" and "second" are used only as labels and do not limit the quantity of their objects.

[0045] like Figure 1 As shown, an embodiment of the present disclosure provides a test device for a vehicle frame assembly 1a. The vehicle frame assembly 1a includes a vehicle frame 11a and a first mounting member 12a and a second mounting member 13a fixed to the vehicle frame 11a. The vehicle frame 11a can be a subframe or a main frame of a vehicle. The first mounting member 12a can be a suspension, which can provide a buffering function. For example, the subframe can be connected to the main frame or vehicle body via the suspension. The specific structure of the suspension is not specifically limited herein. The second mounting member 13a can be a shock tower, which can be fixed to the vehicle frame 11a and used to mount a shock absorber.

[0046] In some embodiments of the present disclosure, the vehicle frame 11a is a subframe, which may include two suspension beams 111a extending along a first direction X. The two suspension beams 111a may be arranged side by side along a second direction Y. The first direction X and the second direction Y may be perpendicular to each other. Each suspension beam 111a may include a suspension and a shock tower along the direction of extension of the suspension beam 111a, i.e., along the first direction X. For example, there may be two suspensions and one shock tower, with the shock tower located between the two suspensions. The subframe may also include a connecting structure 112a connecting the two suspension beams 111a. The connecting structure 112a may be a connecting beam extending along the second direction Y, or another structure capable of connecting the suspension beams 111a. The vehicle frame 11a may be integrally formed using casting or other methods to improve the integration of the vehicle frame 11a and reduce the assembly process.

[0047] Based on the above description of the frame assembly 1a, Figure 2-Figure 6 As shown, the test equipment of the embodiment of the present disclosure may include a bracket 1, a fixing frame 2, a limiting component 3 and a loading component 4, wherein:

[0048] The bracket 1 can be used to support the frame assembly 1a. The fixing frame 2 is detachably connected to the frame 11a. The limiting assembly 3 is provided on the bracket 1 and detachably connected to the first mounting member 12a.

[0049] The loading assembly 4 is provided on the bracket 1 and is detachably connected to the second mounting member 13 a . The loading assembly 4 is used to apply a load to the vehicle frame 11 a through the second mounting member 13 a .

[0050] The test equipment of the embodiment of the present disclosure can simulate the installation method of the frame 11a, provide a load applied to the frame 11a that simulates the frame 11a when the car is driving, conduct fatigue testing, and verify the durability of the frame 11a; specifically, the frame 11a can be placed on the bracket 1, and connected to the fixing frame 2 through the frame 11a as a whole, so as to simulate the rigidity of the actual vehicle; the first mounting member 12a can be limited by the limiting component 3, thereby limiting the frame 11a; the loading component 4 can apply a load to the frame 11a through the second mounting member 13a, and by adjusting the load, the load borne by the actual vehicle can be simulated.

[0051] The following is a detailed description of each part of the test equipment:

[0052] like Figure 2 、 Figure 3 and Figure 5 As shown, the bracket 1 can be fixed to the ground or other installation surfaces by bolts and other connecting parts. The bracket 1 can play a bearing role and can carry the frame component 1a, the limiting component 3 and the loading component 4, etc.

[0053] In some embodiments of the present disclosure, the bracket 1 may include a plurality of columns 11 and support beams 12, each of which may be fixed to the mounting surface. At least some of the columns 11 may be connected by the support beams 12. For example, two adjacent columns 11 may be connected by the support beams 12, thereby connecting the columns 11 into a single unit. The columns 11 and support beams 12 may be connected by welding, clamping, or by bolts or other connectors. The support beams 12 may be I-beams, but other structures are also possible.

[0054] The columns 11 include a limiting column 111 and a loading column 112. The limiting assembly 3 is placed on the top of the limiting column 111, and the loading assembly 4 can be placed on the top of the loading column 112. For example, there are four first mounting members 12a, which are symmetrically arranged on two suspension beams 111a, and two second mounting members 13a, which are symmetrically arranged on two suspension beams 111a. The number of columns 11 is six, namely four limiting columns 111 and two loading columns 112. The four first mounting members 12a are arranged in a one-to-one correspondence with the four limiting columns 111, and the two second mounting members 13a are arranged in a one-to-one correspondence with the two loading columns 112.

[0055] Furthermore, the top of the column 11 can extend outward to form a support plate with a flange structure, thereby increasing the area to support the limiting component 3 and the loading component 4.

[0056] like Figure 3 and Figure 5 As shown, mounting bracket 2 can be a plate-like structure, and can be made of aluminum or other materials. During testing, frame 11a of frame assembly 1a can be connected to mounting bracket 2 to simulate the rigidity of a real vehicle, that is, to simulate the actual installation environment of frame 11a. Mounting bracket 2 can be located on the side of support beam 12 close to frame 11a, and mounting bracket 2 can be disconnected from bracket 1, being connected only to frame 11a. Alternatively, mounting bracket 2 can be supported by columns 11 or support beams 12.

[0057] In some embodiments of the present disclosure, the frame 11a is a sub-frame having a plurality of mounting holes connected to the main frame. Holes may be opened on the fixing frame 2 at positions corresponding to the mounting holes, and the sub-frame and the fixing frame 2 may be connected as a whole using bolts or other connectors to simulate the connection state of the sub-frame and the main frame.

[0058] The limiting assembly 3 is detachably connected to the first mounting member 12a and can fix the vehicle frame 11a on the bracket 1, simulating the installation state of the first mounting member 12a in a real vehicle.

[0059] like Figure 2 、 Figure 4 and Figure 6As shown, in some embodiments of the present disclosure, the limiting assembly 3 may include a base 31, a clamping mechanism and a fastening mechanism, wherein:

[0060] The base 31 can be disposed on the bracket 1 and can be fixedly connected to the bracket 1. In some embodiments, the base 31 can include a bottom plate 311 and side plates 312. The bottom plate 311 is disposed on the bracket 1, for example, the bottom plate 311 can be disposed on the top of the limiting column 111. The side plates 312 can be disposed on the surface of the bottom plate 311 away from the bracket 1 and can be fixedly connected to the bottom plate 311 by welding or other means. Of course, the bottom plate 311 and the side plates 312 can also be integrally formed. Furthermore, to increase the strength of the base 31, the base 31 also includes ribs 313. The ribs 313 can be disposed on the surface of the bottom plate 311 away from the bracket 1 and connected to the side plates 312. The ribs 313 can support the side plates 312 to prevent them from deflecting or deforming. The number of ribs 313 can be one or more, and if multiple ribs 313 are used, the ribs 313 can be distributed along the second direction Y.

[0061] The clamping mechanism can be connected to the base 31 via a fastening mechanism. The clamping mechanism may include two clips 32. The two clips 32 may be arranged opposite each other along the first direction X, and the distance between the two clips 32 may be adjustable. The first mounting member 12a may be positioned between the two clips 32. The fastening mechanism is connected to the two clips 32, and the clips 32 are squeezed by the fastening mechanism to clamp the first mounting member 12a. Thus, the position of the frame 11a is limited by limiting the position of the first mounting member 12a.

[0062] In some embodiments, the fastening mechanism includes a fastening screw 33 and a fastening nut 34, wherein the fastening screw 33 can be provided on the base 31 and can pass through the two clips 32, and the fastening nut 34 is threadedly connected to the fastening screw 33. By rotating the fastening nut 34, the position of the fastening nut 34 on the screw can be adjusted, so that the clip 32 can be squeezed by the fastening nut 34 to clamp the first mounting member 12a.

[0063] like Figure 6As shown, the clip 32 may further include a clamping portion 321 and a connecting portion 322. The clamping portion 321 may be arcuate, with the clamping portions 321 of the two clips 32 curved in opposite directions, thereby forming an open cylindrical structure within which the first mounting member 12a is located. The connecting portion 322 may be connected to the end of the clamping portion 321. The fastening screw 33 may pass through the connecting portions 322 of the two clips 32. The clamping portions 321 of the two clips 32 are located between the base 31 and the fastening nut 34. Thus, by rotating the fastening nut 34, the clips 32 can be pressed toward the base 31, thereby clamping the first mounting member 12a. For example, the fastening screw 33 can pass through the side plate 312 of the base 31, and the clamping portions 321 of the two clips 32 can be located on the same side of the side plate 312 and between the side plate 312 and the fastening nut 34. By rotating the fastening nut 34, the clamping portion 321 of the clip 32 can be squeezed toward the side plate 312, thereby clamping the two clips 32.

[0064] In addition, if Figure 6 As shown, one end of the fastening screw 33 away from the fastening nut 34 passes through the side plate 312, and a limiting nut 35 can be provided at the end, or a screw head can be formed to prevent the fastening screw 33 from falling out.

[0065] like Figure 6 As shown, to facilitate adjustment of the position of the base 31, in some embodiments of the present disclosure, a slide groove 3111 may be provided on the base plate 311; a locking member 36 passes through the slide groove 3111 and is connected to the bracket 1; the locking member 36 can lock and unlock the base plate 311 from the bracket 1, and after unlocking, the base plate 311 can slide along the extension direction of the slide groove 3111. For example, the slide groove 3111 can extend along a first direction X and be open at one end, so that the position of the base 31 can be adjusted along the first direction X. The locking member 36 can be a bolt. When the bolt is tightened, the bolt head can press against the base plate 311 to prevent it from moving. When the bolt is loosened, the base plate 311 can move along the slide groove 3111.

[0066] In some embodiments of the present disclosure, for each first mounting member 12a, the number of the base 31 and the fastening mechanism of the limiting assembly 3 may be two, and they are symmetrically distributed along the second direction Y, and both ends of the clamping portion 321 of the clip 32 are provided with a connecting portion 322, and the first mounting member 12a is clamped from both sides by two fastening mechanisms.

[0067] The loading assembly 4 is provided on the bracket 1 and is detachably connected to the second mounting member 13a. The loading assembly 4 can apply a load to the vehicle frame 11a through the second mounting member 13a to simulate the load condition of an actual vehicle for fatigue testing.

[0068] like Figure 2 、 Figure 3 and Figure 5As shown, in some embodiments of the present disclosure, the loading assembly 4 includes a telescopic device 41, which can be provided on the limiting column 111 of the bracket 1 and can be connected to the second mounting member 13a. By applying a load to the second mounting member 13a that moves closer to and away from the fixing frame 2, a load can be applied to the frame 11a to simulate the bumps during driving of the actual vehicle.

[0069] The telescopic device 41 may include a hydraulic cylinder, which may be fixed to the loading column 112 , and a piston rod of the hydraulic cylinder may be connected to the second mounting member 13 a . The load may be applied to move the load closer to or further away from the fixing frame 2 by extending and retracting the piston rod.

[0070] In addition, the loading assembly 4 also includes a load detection element 42. The telescopic device 41 is provided with the load detection element 42, which can detect the load applied by the telescopic device 41 to provide data for load adjustment. The load detection element 42 can be a pressure sensor or other load-detecting element, which will not be listed here.

[0071] The following is a brief description of the fatigue test process using the above test equipment:

[0072] Step 10: Connect the limit assembly 3 to the suspension (first mounting member 12a) and fix the frame assembly 1a to the bracket 1;

[0073] Step 20: Connect the hydraulic cylinder (loading assembly 4) to the shock tower (second mounting member 13a) of the vehicle frame 11a and debug the hydraulic cylinder.

[0074] Step 30: A strain gauge is attached to a designated location on the vehicle frame 11a, calibrated, and then connected to a strain measurement system for subsequent data collection and analysis.

[0075] Step 40: preload the hydraulic cylinder to eliminate the gap;

[0076] Step 50: The hydraulic cylinder applies a two-side loading method, applying a tensile load to one shock tower and a compressive load to the other side shock tower;

[0077] Step 60: Start fatigue testing according to different loads and cycle times, and obtain test results.

[0078] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A test device for a vehicle frame assembly, characterized in that: The frame assembly includes a frame and a first mounting member and a second mounting member fixed to the frame; the test equipment includes: a bracket for supporting the frame assembly; a fixing frame, detachably connected to the vehicle frame; a limiting assembly, provided on the bracket and detachably connected to the first mounting member; A loading assembly is provided on the bracket and is detachably connected to the second mounting member. The loading assembly is used to apply a load to the vehicle frame through the second mounting member.

2. The test equipment according to claim 1, characterized in that The limiting component includes: A base, provided on the bracket; The clamping mechanism includes two clamping pieces arranged opposite to each other, and the first mounting member can be placed between the two clamping pieces; A fastening mechanism is provided on the base and connected to the two clips; the fastening mechanism is used to enable the clips to clamp the first mounting member.

3. The test equipment according to claim 2, characterized in that The fastening mechanism comprises: A fastening screw is provided on the base and passes through the two clips; A fastening nut is threadedly connected to the fastening screw, and the fastening nut is used to squeeze the clip to tighten the first mounting member.

4. The test equipment according to claim 3, characterized in that The clip includes a clamping portion and a connecting portion, the clamping portion is arc-shaped, and the bending directions of the clamping portions of the two clips are opposite to each other; the connecting portion is connected to the end of the clamping portion; the screw passes through the connecting portions of the two clips; the clamping portions of the two clips are located between the base and the fastening nut.

5. The test equipment according to claim 3, characterized in that The base includes a bottom plate and a side plate; the bottom plate is arranged on the bracket, and the side plate is arranged on the surface of the bottom plate away from the bracket; the fastening screw passes through the side plate; The base plate is provided with a slide groove; the test equipment also includes a locking member, which passes through the slide groove and is connected to the bracket; the locking member can lock and unlock the base plate and the bracket, and after unlocking, the base plate can slide along the extension direction of the slide groove.

6. The test device according to claim 5, characterized in that The base further includes a rib plate, which is arranged on a surface of the bottom plate away from the bracket and is connected to the side plate.

7. The test equipment according to claim 1, characterized in that The loading component includes: The telescopic device is provided on the bracket and connected to the second mounting member, and is used for applying a load to the vehicle frame to move it closer to and away from the fixing frame.

8. The test device according to claim 7, characterized in that The telescopic device comprises: A hydraulic cylinder is provided on the bracket, and a piston rod of the hydraulic cylinder is connected to the second mounting member.

9. The test device according to claim 7, characterized in that The loading component also includes: The load detection element is provided on the telescopic device and is used to detect the load applied by the telescopic device.

10. The test device according to claim 1, characterized in that The bracket includes a plurality of columns and a support beam connecting at least some of the columns; the fixing frame is located on a side of the support beam close to the vehicle frame; The column includes a limiting column and a loading column. The limiting component is arranged at the top end of the limiting column, and the loading component is arranged at the top end of the loading column.

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