CN114778151A - Vehicle body testing device - Google Patents
Vehicle body testing device Download PDFInfo
- Publication number
- CN114778151A CN114778151A CN202210410047.XA CN202210410047A CN114778151A CN 114778151 A CN114778151 A CN 114778151A CN 202210410047 A CN202210410047 A CN 202210410047A CN 114778151 A CN114778151 A CN 114778151A
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- China
- Prior art keywords
- frame
- vehicle body
- support
- beams
- frame assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses a vehicle body testing device which comprises a supporting frame, a frame assembly, a limiting assembly and a telescopic cylinder, wherein the frame assembly is arranged on the supporting frame; the telescopic cylinder is horizontally arranged between the bearing surface of the stress beam of the frame assembly and the mounting surface of the support frame, and the bearing surface and the mounting surface are parallel and form an angle alpha with the longitudinal section, so that the force applied to the stress beam by the telescopic cylinder forms an angle alpha with the longitudinal section, and further simulation of multi-angle stress load of the stress beam can be realized, the simulation result accuracy is higher, and the telescopic cylinder has important guiding significance for actual design of a vehicle body.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a vehicle body testing device.
Background
With the rapid development of rail transit, various component structures of vehicles have diversified and rapid design requirements, and a vehicle body is used as a main bearing component of the vehicle and faces a plurality of difficulties of light weight, high strength and complicated structure in the design and manufacturing process. Meanwhile, after the new vehicle type is manufactured in a trial mode, a large amount of test verification needs to be carried out on the strength and the rigidity of the vehicle body to support the vehicle design.
Disclosure of Invention
The invention aims to provide a vehicle body testing device which can realize that a force load angle is loaded on a simulated vehicle body.
The invention provides a vehicle body test device, which is characterized by comprising the following components:
a support frame;
the frame assembly comprises a frame body formed by fixedly connecting a plurality of beams and is used for simulating a framework of the tested vehicle body; at least one of the beams is a stressed beam, the side wall of the stressed beam is provided with a bearing surface, and the bearing surface and the longitudinal section or the cross section of the frame component form an included angle;
the frame assembly is supported on the supporting frame, and the limiting assembly can limit the frame assembly to move relative to the supporting frame so as to position the frame assembly on the supporting frame;
the telescopic cylinder is horizontally arranged, the supporting frame is further provided with an installation surface, the installation surface is parallel to the force bearing surface, the fixed end portion of the telescopic cylinder is installed on the installation surface, and the movable end portion can abut against the force bearing surface.
The telescopic cylinder is horizontally arranged between the bearing surface of the stress beam of the frame assembly and the mounting surface of the support frame, and the bearing surface and the mounting surface are parallel and form an angle alpha with the longitudinal section, so that the force applied to the stress beam by the telescopic cylinder forms an angle alpha with the longitudinal section, and further simulation of multi-angle stress load of the stress beam can be realized, the simulation result accuracy is higher, and the telescopic cylinder has important guiding significance for actual design of a vehicle body.
Optionally, the mounting device further comprises a base, and the mounting surface is arranged on one side of the base, which faces the frame assembly; the vehicle body testing device further comprises a first frame body which is of a box body structure, the box body structure is provided with a plurality of mounting hole groups on the side wall opposite to the first side face of the frame assembly, and each mounting hole group comprises at least one mounting hole and is used for being detachably mounted on the base.
Optionally, the height of the first frame body relative to the supporting frame is adjustable;
alternatively, the first and second electrodes may be,
at least, including first support column group and second support column group, first support column group is including a plurality of first support columns, the second support column group is including a plurality of second support columns, first support column with the height difference of second support column, first support body can pass through first support column group or second support column group support in the support frame.
Optionally, the limiting assembly comprises a second frame body in a box structure, the second frame body is abutted to the frame assembly, the first frame body and the second frame body are respectively located on two sides of the frame assembly, and the first frame body and the second frame body are fixed through at least one guide rod.
Optionally, the support frame is further fixed with a stand and an inclined strut, the stand is vertically supported and fixed to the support frame, and the stand is further supported on the support frame through the inclined strut, the stand is further provided with an actuator for applying an acting force to a part of beams on a second side of the frame assembly, wherein the first side is vertical to the second side.
Optionally, the frame assembly includes a plurality of cross beams and longitudinal beams, the cross beams and the longitudinal beams form a main framework of the frame body, a plurality of supporting cross beams and supporting longitudinal beams are further fixed inside the peripheral framework, and two ends of the supporting cross beams and the supporting longitudinal beams are respectively and fixedly connected with the beams on the opposite sides of the peripheral framework.
Optionally, the load-bearing surface comprises a block body, the block body is fixed to the stressed beam, and the force-bearing surface is located on the block body;
or/and one of the bottom wall of the frame component and the support frame is provided with a positioning column, and the other one is provided with a positioning hole which is matched with the positioning column for installation.
Optionally, the stressed beam comprises a simulated collision column and a simulated corner column, which are respectively used for simulating a collision column and a corner column of a vehicle body, and the bearing surface and the longitudinal surface of the frame assembly form a predetermined angle;
optionally, the stress beam further comprises a middle cross beam, the same stress beam comprises a first section and a second section along the length direction, the adjacent ends of the first section and the second section are fixedly connected with the middle cross beam, and the force bearing surface is located in the area where the middle cross beam is located between the two adjacent sections of the same stress beam.
Optionally, the same stressed beam is provided with at least two force bearing surfaces, and the included angles between at least two of the force bearing surfaces and the longitudinal surface are different.
Drawings
FIG. 1 is a three-dimensional schematic view of a vehicle body testing apparatus in one embodiment of the present invention;
FIG. 2 is a schematic structural view of the frame assembly shown in FIG. 1;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a side view of FIG. 2;
FIG. 5 is a schematic structural diagram of a support frame, a vertical frame, a diagonal brace, a support assembly and other components of the vehicle body testing apparatus shown in FIG. 1;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is an assembly view of the first frame, the telescopic cylinder and the base shown in FIG. 1;
FIG. 8 is an exploded view of FIG. 7;
the force applied to the corner post is shown at an angle a to the longitudinal section in fig. 9;
fig. 10 shows the force applied to the corner post at an angle of-a to the longitudinal section.
Wherein;
100 frame components, 10 positioning columns, 101 connecting plates, 11 simulation collision columns, 12 simulation corner columns and 13 first bearing surfaces; 14, a second bearing surface; 15 longitudinal beams, 16 transverse beams, 171 first transverse beam section, 172 second transverse beam section, 18 reinforcing plates, 191 first longitudinal beam section and 192 vertical beams;
200 support frame
21 a first frame body, 22 a telescopic cylinder, 23 a base, a first installation surface 231, a second installation surface 232, 24 guide rods, 25 locking nuts, 26 a second frame body, 27, 281 stand frames, 282 diagonal supports, 283 installation seats, 201 fixing plates, 2a positioning holes, 202 limiting columns
300 actuator.
Detailed Description
Without loss of generality, the invention takes the car body test device as an example to carry out simulation test on the car body section with the collision column and the corner column of the railway vehicle, introduces the technical scheme and the technical effect, and the person skilled in the art can understand the car body test device of the invention
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 10, the present invention provides a vehicle body testing apparatus, which includes a supporting frame, a frame assembly, a limiting assembly and a telescopic cylinder.
Here, the longitudinal direction of the frame assembly 100 corresponds to the longitudinal direction of the vehicle body to be simulated, and the lateral direction of the frame assembly 100 corresponds to the width direction of the vehicle body to be simulated. The longitudinal section corresponds to a plane along the length direction of the vehicle body, and the cross section corresponds to a plane along the width direction of the vehicle body.
Referring to fig. 5 and 6, the supporting frame 200 provided by the present invention not only has a function of providing a mounting base for other components of the vehicle body testing apparatus, but also can be connected and fixed with other external environments. On the premise of meeting the requirement, the specific mode of the support frame 200 can be in various forms, and the invention mainly provides a structure formed by welding a plurality of rod bodies of the support frame 200. Of course, it should be understood by those skilled in the art that the structure of the supporting frame 200 is not limited to the description herein, and may be in other structural forms.
Referring to fig. 2 to 4, the frame assembly 100 of the present invention includes a frame body formed by connecting a plurality of beams, and is used for simulating a frame of a vehicle body to be tested. The beam can be in a tubular structure such as a rectangular tube, a square tube and the like. The beams can be divided into cross beams 16 and longitudinal beams 15 according to the arrangement direction of the beams. At least one of the beams is a stressed beam, the side wall of the stressed beam is provided with a bearing surface, and the bearing surface and the longitudinal section or the cross section of the frame component 100 form an included angle. Taking the simulation of the force applied to the collision column 11 and the corner column as an example, the force bearing surface and the longitudinal section have a predetermined included angle. Referring to fig. 9 and 10, wherein fig. 9 illustrates that the force applied by the diagonal column is at an angle a to the longitudinal section, fig. 10 illustrates that the force applied by the diagonal column is at an angle a to the longitudinal section, and the two forces in fig. 10 and 9 are symmetrical about the longitudinal section. An included angle between the bearing surface and the longitudinal section or the cross section can be determined according to actual conditions, alpha can be any numerical value within a range from 0 to +/-90 degrees, and hereinafter, the technical scheme and the technical effects are introduced by taking alpha as 15 degrees and-15 degrees as examples.
The frame assembly 100 of the present invention is supported by the supporting frame 200, and the limiting assembly can limit the movement of the frame assembly 100 relative to the supporting frame 200 to position the frame assembly on the supporting frame 200; that is, the frame assembly 100 cannot move relative to the supporting frame 200 under the effect of the limiting assembly. In one particular example, the spacing assembly can limit the lateral and longitudinal positions of the frame assembly 100 to achieve spacing of the frame assembly 100. The x-direction is shown as the transverse direction and the y-direction as the longitudinal direction in fig. 1.
The telescopic cylinder 22 is horizontally arranged, the support frame 200 further comprises a mounting surface, the mounting surface is parallel to the bearing surface, the fixed end part of the telescopic cylinder 22 is mounted on the mounting surface, and the movable end part can abut against the bearing surface. When two or two loads at different angles need to be loaded, mounting surfaces and bearing surfaces corresponding to the loads one to one may be respectively set to meet test requirements, for example, the parallel first mounting surface 231 and the first bearing surface 13 are set to meet the load at an angle of a 1 with the longitudinal section, and the parallel second mounting surface 232 and the second bearing surface 14 are set to meet the load at an angle of a 2 with the longitudinal section.
In the invention, the telescopic cylinder 22 is horizontally arranged between the bearing surface of the stress beam of the frame assembly 100 and the mounting surface of the support frame 200, and the bearing surface and the mounting surface are parallel and form an angle alpha with the longitudinal section, so that the force applied to the stress beam by the telescopic cylinder 22 forms an angle alpha with the longitudinal section, further the simulation of the multi-angle stress load of the stress beam can be realized, the precision of a simulation result is higher, and the invention has important guiding significance for the actual design of a vehicle body.
In a specific example, the vehicle body test device of the present invention further includes a base 23, and the mounting surface is provided on a side of the base 23 facing the frame assembly 100; the vehicle body testing device further comprises a first frame body 21 which is of a box body structure, a plurality of mounting hole groups are arranged on the side wall, opposite to the first side face, of the box body structure 100, and each mounting hole group comprises at least one mounting hole 211 used for detachably mounting the base 23.
Therefore, according to the position of the force bearing point of the frame assembly 100, the base 23 of the telescopic cylinder 22 can be fixed by selecting the proper mounting hole group on the first frame body 21, so as to improve the flexibility of the device. Taking the corner post and collision post test as an example, the corner post and collision post are respectively located at different positions of the vehicle body, and correspondingly, the simulation corner post 12 and the simulation collision post 11 are also located at different positions of the frame assembly 100, so that the force loading of the same telescopic cylinder 22 on the simulation corner post 12 and the simulation collision post 11 can be realized by adjusting the installation position of the base 23 on the first frame body 21 according to the test conditions.
In order to further improve the flexibility of the device, the height of the first frame body 21 relative to the supporting frame 200 is adjustable; there are various ways to realize the height adjustment of the first frame body 21, for example, the first frame body 21 is supported on the supporting frame 200 by an adjustable component, or the first frame body 21 is supported on the supporting frame 200 by a supporting component with a fixed length, and the height adjustment of the first frame body 21 relative to the supporting frame 200 is realized by replacing the supporting component with a proper height.
In a specific example, the vehicle body testing device of the invention at least comprises a first supporting column group and a second supporting column group, wherein the first supporting column group comprises a plurality of first supporting columns, the second supporting column group comprises a plurality of second supporting columns, the heights of the first supporting columns and the heights of the second supporting columns are different, and the first frame body 21 can be supported on the supporting table through the first supporting column group or the second supporting column group. Only the embodiment of the first support post 27 mounted to the support bracket 200 is shown.
In the above embodiments, the limiting component includes the second frame body 26 in a box structure, the second frame body 26 abuts against and cooperates with the frame component 100, the first frame body 21 and the second frame body 26 are respectively located on two sides of the frame component 100, and the two are fixed by at least one guide rod 24. The guide bar 24 may be fixedly coupled to the first body 21 and the second body 26 by a locking nut 25.
The frame assembly 100 is located between the first frame 21 and the second frame 26, and when the telescopic cylinder 22 mounted on the first frame 21 applies a force to the frame assembly 100, the frame assembly 100 can abut against the second frame 26, so as to prevent the frame assembly 100 from being displaced in the longitudinal direction. And the first frame body 21 and the second frame body 26 are both box body structures, and the structural stability is higher.
The support frame 200 of the vehicle body testing apparatus further comprises a vertical frame 281 and an inclined strut 282, wherein the vertical frame 281 is vertically supported and fixed on the support table, the vertical frame 281 may be formed by fixedly connecting a plurality of transverse beams and a plurality of longitudinal beams, and the vertical frame 281 is further supported on the support table through the inclined strut 282, and the vertical frame 281 is further provided with an actuator 300 for applying an acting force to a part of the beams on a second side of the frame assembly 100, wherein the first side is perpendicular to the second side. Specifically, the mounting seat 283 is fixed on the stand 281 for mounting the actuators 300, and the number of the actuators 300 may be one or more than one.
As shown in fig. 1, the uprights 281 are located alongside the frame assembly 100 and have actuators that apply a force to the frame assembly 100 in the transverse direction (x-direction) to simulate the lateral load test requirements of the vehicle body. Of course, by setting the arrangement direction of the actuator, it is also possible to satisfy that the force application direction of the actuator has a predetermined angle with the cross section.
In one embodiment, the arrangement of the beams on the second side of the frame assembly can be seen in fig. 2, and includes a vertical beam 192 located at the middle of the second side, wherein the vertical beam 192 is fixedly connected with a longitudinal dummy window beam 191 at two sides, and the vertical beam 192 can be further divided into two or N sections along the length direction, and the adjacent two sections are fixedly connected with a transition longitudinal beam 193.
In one embodiment, the frame assembly 100 includes a plurality of cross members and longitudinal members that form a main frame of the frame, and a plurality of support cross members and support longitudinal members that are fixed to the interior of the peripheral frame and are respectively fixedly connected at opposite ends to the beams on opposite sides of the peripheral frame. As shown in fig. 2, the number of the supporting cross beams 17 and the number of the supporting longitudinal beams 17 'are two, two ends of each supporting cross beam 17 are respectively supported between two collision columns on opposite sides, and two ends of each supporting longitudinal beam 17' are respectively supported between beams on opposite sides. Of course, the number of the supporting beams 17 and the supporting longitudinal beams 17' is not limited to the number described herein, and may be 1 or 3 or other numbers.
In a specific example, the vehicle body testing device comprises a block body 13, wherein the block body 13 is fixed on a stressed beam, and a bearing surface is positioned on the block body; the block body 13 can be fixedly arranged on the stress beam, certainly can be detachably arranged on the stress beam, and can be arranged at any time to adjust the position, so that the test flexibility can be improved.
In one example, one of the bottom wall of the frame assembly 100 and the supporting frame 200 is provided with a positioning post, and the other is provided with a positioning hole fitted with the positioning post. Two positioning posts 10 are fixed on the bottom of the frame assembly 100, and the supporting frame 200 is provided with positioning holes 2a for fitting with the positioning posts. Specifically, for the support frame formed by the cross beam and the longitudinal beam, in order to facilitate the arrangement of the positioning holes, the support frame may further be fixed with a fixing plate 201, and the positioning holes are arranged on the fixing plate 201.
In addition, four upward limiting columns 202 are further arranged on the supporting frame 200 to limit the transverse displacement of the frame assembly 100. For example, the restraint posts 202 may cooperate with the stringers of the frame assembly 100 to provide lateral restraint.
The positioning posts, the positioning holes and the limiting posts all play a role in limiting the relative positions of the frame assembly 100 and the supporting frame 200.
The stress beam comprises a simulation collision column 11 and a simulation corner column 12 which are respectively used for simulating a collision column and a corner column of a vehicle body, and a bearing surface and the longitudinal surface of the frame component 100 have a preset angle; the longitudinal plane of the frame assembly 100 corresponds to the longitudinal section of the vehicle body, and correspondingly, the transverse plane of the frame assembly 100 corresponds to the cross-section of the vehicle body.
The vehicle body test device further comprises a middle cross beam, the same stressed beam comprises a first section and a second section along the length direction, the simulated corner column 12 comprises a first section 121 and a second section 122 for example, the adjacent end parts of the first section 121 and the second section 122 are fixedly connected with the middle cross beam 17, and the bearing surface is located in the area, between the two adjacent sections of the same stressed beam, of the middle cross beam 17. This may increase the structural stability of the stress beam position.
Of course, the stress beam is not limited to include two segments along the length direction, and may also be three segments or other number of segments.
As mentioned above, the setting of the bearing surfaces can be set according to the test requirements, at least two bearing surfaces can be arranged on the same bearing beam, and the included angles between at least two of the bearing surfaces and the longitudinal surface are different.
The vehicle body test device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A vehicle body test device is characterized by comprising the following components:
a support frame;
the frame assembly comprises a frame body formed by fixedly connecting a plurality of beams and is used for simulating a framework of the tested vehicle body; at least one of the beams is a stressed beam, the side wall of the stressed beam is provided with a bearing surface, and the bearing surface and the longitudinal section or the cross section of the frame assembly form an included angle;
the frame assembly is supported on the supporting frame, and the limiting assembly can limit the frame assembly to move relative to the supporting frame so as to position the frame assembly on the supporting frame;
the telescopic cylinder is horizontally arranged, the supporting frame is further provided with an installation surface, the installation surface is parallel to the bearing surface, the fixed end portion of the telescopic cylinder is installed on the installation surface, and the movable end portion can abut against the bearing surface.
2. The vehicle body test apparatus of claim 1, further comprising a base, wherein the mounting surface is disposed on a side of the base facing the frame assembly; the automobile body test device still includes first support body, is the box structure, the box structure with be provided with a plurality of installation punch combinations on the relative lateral wall in the first side of frame subassembly, each installation punch combination includes at least one mounting hole, is used for demountable installation the base.
3. The vehicle body test device of claim 2, wherein the height of the first frame body relative to the support frame is adjustable;
alternatively, the first and second electrodes may be,
at least, including first support column group and second support column group, first support column group is including a plurality of first support columns, the second support column group is including a plurality of second support columns, first support column with the height difference of second support column, first support body can pass through first support column group or second support column group support in the support frame.
4. The vehicle body test device according to claim 2, wherein the limiting assembly comprises a second frame body in a box structure, the second frame body is in abutting fit with the frame assembly, the first frame body and the second frame body are respectively located on two sides of the frame assembly, and the first frame body and the second frame body are fixed through at least one guide rod.
5. The vehicle body test device of claim 2, wherein the support frame further has secured thereto a stand and a diagonal brace, the stand being vertically supported from the support frame and further being supported from the support frame by the diagonal brace, the stand further having an actuator disposed thereon for applying a force to a portion of the beam on a second side of the frame assembly, wherein the first side is perpendicular to the second side.
6. The vehicle body test device of claim 2, wherein the frame assembly comprises a plurality of cross beams and longitudinal beams, the cross beams and the longitudinal beams form a main framework of the frame body, a plurality of supporting cross beams and supporting longitudinal beams are further fixed inside the peripheral framework, and two ends of the supporting cross beams and the supporting longitudinal beams are respectively fixedly connected with the beams on the opposite sides of the peripheral framework.
7. The vehicle body test device as claimed in any one of claims 1 to 6, wherein the vehicle body test device comprises a block body, the block body is fixed on the stressed beam, and the bearing surface is located on the block body;
or/and one of the bottom wall of the frame component and the support frame is provided with a positioning column, and the other one is provided with a positioning hole which is matched with the positioning column for installation.
8. The vehicle body test device as claimed in any one of claims 1 to 6, wherein the load-bearing beam includes a simulated crash column and a simulated corner column for simulating a vehicle body, respectively, the force-bearing surface having a predetermined angle with a longitudinal surface of the frame assembly.
9. The vehicle body test device of claim 8, further comprising a middle cross beam, wherein the same stressed beam comprises a first section and a second section along the length direction, the adjacent ends of the first section and the second section are fixedly connected with the middle cross beam, and the bearing surface is located in the area where the middle cross beam is located between the two adjacent sections of the same stressed beam.
10. The vehicle body test device of claim 8, wherein at least two force bearing surfaces are arranged on the same force bearing beam, and the included angles between at least two of the force bearing surfaces and the longitudinal surface are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410047.XA CN114778151A (en) | 2022-04-19 | 2022-04-19 | Vehicle body testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410047.XA CN114778151A (en) | 2022-04-19 | 2022-04-19 | Vehicle body testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114778151A true CN114778151A (en) | 2022-07-22 |
Family
ID=82432077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210410047.XA Pending CN114778151A (en) | 2022-04-19 | 2022-04-19 | Vehicle body testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114778151A (en) |
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2022
- 2022-04-19 CN CN202210410047.XA patent/CN114778151A/en active Pending
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