CN210051548U - Air spring device for modal test - Google Patents
Air spring device for modal test Download PDFInfo
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- CN210051548U CN210051548U CN201920927451.8U CN201920927451U CN210051548U CN 210051548 U CN210051548 U CN 210051548U CN 201920927451 U CN201920927451 U CN 201920927451U CN 210051548 U CN210051548 U CN 210051548U
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- air spring
- air
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- spring device
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Abstract
The utility model provides an air spring device for modal test, which comprises a support plate, an air spring airbag and a base, wherein the support plate is fixed at the top of the air spring airbag, and the base is fixed at the bottom of the air spring airbag; a supporting groove is arranged on the supporting plate, and a bush matched with the supporting groove is arranged in the supporting groove; the supporting plate is provided with a level gauge, and the level gauge is embedded in the side surface of the supporting plate; the air spring device is also provided with an air pressure monitoring device; the bottom of the base is provided with a plurality of telescopic supporting legs. In the air spring device for modal testing, the supporting part of the vehicle body is placed in the dovetail-shaped supporting groove, and the rubber bushing is arranged in the supporting groove, so that the abrasion of the contact position of the vehicle body can be avoided; meanwhile, the friction force of the contact surfaces of the two can be increased, relative displacement is difficult to generate, and the automobile body is prevented from falling and being damaged.
Description
Technical Field
The utility model belongs to the automotive testing field especially relates to an air spring device for modal testing.
Background
In the automobile development process, modal testing needs to be carried out on an automobile body for identifying the vibration form of the automobile body, meanwhile, the modal testing needs to be compared with corresponding CAE software simulation data for mutual verification, and a CAE simulation model needs to be corrected for simulation optimization of the automobile body in the later period. In the industry, the vehicle body needs to be tested in a state of approximate free boundary, so that 4 air springs are needed to support the vehicle body, and the vehicle body is simulated to be in a free state. However, common air springs are not provided with special fixing grooves, air pressure of the air springs is difficult to detect in real time, a vehicle body cannot be guaranteed to be always horizontal in the test process, the phenomenon that the vehicle body slides off frequently occurs in the test process, and normal operation of modal test experiments cannot be guaranteed.
Disclosure of Invention
In view of this, the utility model aims at providing an air spring device for mode test to make the automobile body can only keep steady under air spring's supporting role, the automobile body does not slide with the air spring holding surface relatively, bears certain exogenic action simultaneously, does not empty.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an air spring device for modal testing comprises a support plate, an air spring airbag and a base, wherein the support plate is fixed at the top of the air spring airbag, and the base is fixed at the bottom of the air spring airbag;
a supporting groove is arranged on the supporting plate, and a bush matched with the supporting groove is arranged in the supporting groove;
the supporting plate is provided with a level gauge, and the level gauge is embedded in the side surface of the supporting plate;
the air spring device is also provided with an air pressure monitoring device, the air pressure monitoring device comprises an air pressure sensor and an air pressure monitoring alarm, the air pressure sensor is fixed in the air spring air bag, the air pressure monitoring alarm is fixed on the base, and the air pressure sensor is connected with the air pressure monitoring alarm through a line;
the bottom of the base is provided with a plurality of telescopic supporting legs.
Furthermore, the supporting groove is of a dovetail structure.
Furthermore, the bushing is made of rubber.
Further, the thickness of the lining is 0.4 cm.
Furthermore, the supporting legs are all provided with scale marks.
Further, the base on be equipped with and accomodate the groove, accomodate the edge that the groove is located the base, accomodate the inslot be equipped with bush matched with appurtenance.
Furthermore, the auxiliary tool is provided with a holding block, the holding block is fixed at the top of the auxiliary tool, and anti-skid grooves are formed in two sides of the holding block.
Furthermore, the base is provided with a plurality of handles which are respectively fixed on two sides of the base.
Further, all be equipped with the rubber sleeve on the handle, the rubber sleeve cover in the outside of handle.
Compared with the prior art, an air spring device for mode test have following advantage:
(1) in the air spring device for modal testing, the supporting part of the vehicle body is placed in the dovetail-shaped supporting groove, and the rubber bushing is arranged in the supporting groove, so that the abrasion of the contact position of the vehicle body can be avoided; meanwhile, the friction force of the contact surfaces of the two can be increased, relative displacement is difficult to generate, and the automobile body is prevented from falling and being damaged.
(2) A air spring device for modal test, atmospheric pressure monitoring device can look over whether the inside pressure of air spring satisfies the experimental requirement in real time, improves the measuring accuracy.
(3) A air spring device for modal test, the supporting leg is scalable, can adjust air spring's height according to the experiment requirement, make things convenient for experimental facilities to arrange.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural view of an air spring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an auxiliary tool according to an embodiment of the present invention.
Description of reference numerals:
1. a support plate; 11. a support groove; 111. a bushing; 12. a level gauge; 2. an air spring air bag; 21. an air tap; 3. a base; 31. supporting legs; 311. scale lines; 312. a rod is arranged; 313. a lower rod; 314. a threaded sleeve; 32. a receiving groove; 321. an auxiliary tool; 3211. a holding block; 32111. an anti-slip groove; 33. a handle; 331. a rubber sleeve; 4. an air pressure monitoring device; 41. an air pressure sensor; 42. an air pressure monitoring alarm.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-2, an air spring device for modal testing comprises a support plate 1, an air spring airbag 2 and a base 3, wherein the support plate 1 is fixed at the top of the air spring airbag 2, and the base 3 is fixed at the bottom of the air spring airbag 2; the material of the supporting plate 1 is steel.
A supporting groove 11 is arranged on the supporting plate 1, and a bush 111 matched with the supporting groove 11 is arranged in the supporting groove 11; the supporting groove 11 is positioned at the central position of the supporting plate 1 (namely, the distance between the central line of the supporting groove 11 and the edges of the two sides of the supporting plate 1 is the same), the supporting groove 11 is a dovetail groove with an upper opening of 2cm, a lower opening of 3cm and a height of 1cm, and the supporting position (the thickness is about 0.8cm) of the vehicle body can be just placed at the center of the air spring by the scheme so as to prevent the vehicle from inclining; the cross section of the bush 111 is also in a dovetail shape, so that abrasion between a vehicle body supporting position and the air spring supporting plate 1 can be avoided; the friction force of the contact surfaces of the two can be increased, and the relative displacement is difficult to generate; meanwhile, gaps exist between the vehicle body supporting position and the two sides of the rubber bushing 111 in the Y direction, so that the Y-direction bushing 111 does not restrict the vehicle body supporting position, and the vehicle body can be better simulated to be in a free state.
The supporting plate 1 is provided with a level gauge 12, and the level gauge 12 is embedded in the side surface of the supporting plate 1; when the vehicle body is installed on the air spring, the vehicle body can shield the supporting plate 1, the level gauge 12 is arranged on the side face, the shielding of the vehicle body can be avoided, and the horizontal position of the air spring can be adjusted at any time.
The air spring device is also provided with an air pressure monitoring device 4, the air pressure monitoring device 4 comprises an air pressure sensor 41 and an air pressure monitoring alarm 42, the air pressure sensor 41 is fixed in the air spring air bag 2, the air pressure monitoring alarm 42 is fixed on the base 3, and the air pressure sensor 41 is connected with the air pressure monitoring alarm 42 through a line; whether the pressure inside the air spring can be checked in real time by the air pressure monitoring device 4 to meet the experimental requirements, when the air pressure inside the air spring is lower than the experimental requirements, the air pressure monitoring alarm 42 gives an alarm to charge and boost the air spring through the air tap 21 (the air tap 21 is located at the bottom of the air spring airbag 2), and then the testing precision is improved.
The bottom of the base 3 is provided with a plurality of telescopic supporting legs 31. The supporting legs 31 are telescopic, the height of the air spring can be adjusted according to experiment requirements, and experimental equipment is convenient to arrange.
The supporting leg 31 comprises an upper rod 312, a lower rod 313 and a threaded sleeve 314, wherein the upper rod 312 is fixed at the bottom of the base 3, the lower rod 313 is positioned below the upper rod 312, the threaded sleeve 314 is sleeved on the outer sides of the upper rod 312 and the lower rod 313, one end of the threaded sleeve 314 is in threaded connection with one end of the upper rod 312, and the other end of the threaded sleeve 314 is in threaded connection with one end of the lower rod 313. When the length of the supporting leg 31 needs to be adjusted, the threaded sleeve 314 is rotated to enable the upper rod 312 and the lower rod 313 to be simultaneously screwed out of the threaded sleeve 314, and the length of the supporting leg 31 is extended; if the upper bar 312 and the lower bar 313 are simultaneously screwed into the screw caps 314, the length of the support leg 31 is shortened.
The supporting groove 11 is of a dovetail structure. The length of the support groove 11 is equal to the length of the support plate 1. The dovetail-shaped support groove 11 can ensure that a vehicle support point is positioned at the center position of the air spring, so that the air spring is prevented from deviating; meanwhile, the relative slippage of the vehicle body and the supporting surface is prevented, so that the vehicle body falls off to cause serious accidents; and the dovetail-shaped rubber bushing 111 is convenient to disassemble, assemble, replace and fix.
The bushing 111 is made of rubber. And further prevent the vehicle body from directly contacting with the air spring supporting surface and scratching the vehicle body.
The thickness of the bushing 111 is 0.4 cm. The length is equal to the length of the support groove 11.
The supporting legs 31 are all provided with scale marks 311. The height of the air spring is recorded, and the air springs are convenient to adjust.
The base 3 on be equipped with and accomodate groove 32, accomodate the edge that groove 32 is located base 3, accomodate the inslot 32 in be equipped with bush 111 matched with appurtenance 321. The section of the auxiliary tool 321 is trapezoidal, the upper side length is 1.8cm, the lower side length is 2.8cm, the length is 1cm, meanwhile, a cuboid holding block 3211 is arranged at the top of the auxiliary tool 321, an engineer holds the holding block 3211 to push the rubber bushing 111 into or out of the dovetail groove along the X direction.
The auxiliary tool 321 is provided with a holding block 3211, the holding block 3211 is fixed to the top of the auxiliary tool 321, and anti-slip grooves 32111 are formed on both sides of the holding block 3211. The anti-slip groove 32111 has anti-slip and anti-slip functions, and facilitates the use of the auxiliary tool 321.
The base 3 on be equipped with a plurality of handles 33, the handle 33 fix respectively in the both sides of base 3.
The handle 33 is provided with a rubber sleeve 331, and the rubber sleeve 331 is sleeved outside the handle 33. The handle 33 makes it easy for an engineer to carry the air spring, and the rubber sleeve 331 prevents hands from being injured.
During testing, before the air spring is used, a laboratory technician needs to detect whether the internal pressure of the air spring meets the experimental requirements, and if the internal pressure of the air spring does not meet the experimental requirements, the air pressure is adjusted through an air charging port of the air spring; then, the experimenter moves the air spring to the iron floor through the handles 33 on both sides of the air spring base 3, and places the air spring on a specific position respectively. The air spring base 3 is provided with a level 12 for a laboratory technician to check whether the air spring is placed on the horizontal plane, and if the air spring is not placed on the horizontal plane, the air spring can be adjusted to the horizontal position by adjusting the height of the supporting legs 31 at the lower end of the air spring base 3. The support leg 31 is provided with scale lines 311 for recording the height of the air springs, so that a plurality of air springs can be conveniently adjusted.
After the air spring is positioned, the vehicle body is moved to the position above the air spring through the crown block, so that the side wall of the vehicle body is inserted into the supporting groove 11, the vehicle body is fixed, and a modal test experiment is performed. The supporting points of the vehicle body are placed in the dovetail-shaped supporting grooves 11, gaps are formed between the supporting points of the vehicle body and the rubber bushings 111 on two sides in the Y direction, the Y-direction bushings 111 do not restrict the supporting position of the vehicle body, and the vehicle body can be better simulated to be in a free state.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An air spring device for modal testing, characterized by: the air spring air bag support comprises a support plate, an air spring air bag and a base, wherein the support plate is fixed at the top of the air spring air bag, and the base is fixed at the bottom of the air spring air bag;
a supporting groove is arranged on the supporting plate, and a bush matched with the supporting groove is arranged in the supporting groove;
the supporting plate is provided with a level gauge, and the level gauge is embedded in the side surface of the supporting plate;
the air spring device is also provided with an air pressure monitoring device, the air pressure monitoring device comprises an air pressure sensor and an air pressure monitoring alarm, the air pressure sensor is fixed in the air spring air bag, the air pressure monitoring alarm is fixed on the base, and the air pressure sensor is connected with the air pressure monitoring alarm through a line;
the bottom of the base is provided with a plurality of telescopic supporting legs.
2. The air spring device for modal testing of claim 1, wherein: the supporting groove is of a dovetail structure.
3. The air spring device for modal testing of claim 2, wherein: the bushing is made of rubber.
4. The air spring device for modal testing of claim 3, wherein: the thickness of the lining is 0.4 cm.
5. The air spring device for modal testing of claim 1, wherein: the supporting legs are all provided with scale marks.
6. The air spring device for modal testing of claim 2, wherein: the base on be equipped with and accomodate the groove, accomodate the edge that the groove is located the base, accomodate the inslot be equipped with bush matched with appurtenance.
7. The air spring device for modal testing of claim 6, wherein: the auxiliary tool is provided with a holding block, the holding block is fixed at the top of the auxiliary tool, and anti-skid grooves are formed in two sides of the holding block.
8. The air spring device for modal testing of claim 1, wherein: the base is provided with a plurality of handles which are respectively fixed on two sides of the base.
9. The air spring device for modal testing of claim 8, wherein: the handle on all be equipped with the rubber sleeve, the rubber sleeve cover in the outside of handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927451.8U CN210051548U (en) | 2019-06-19 | 2019-06-19 | Air spring device for modal test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927451.8U CN210051548U (en) | 2019-06-19 | 2019-06-19 | Air spring device for modal test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210051548U true CN210051548U (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920927451.8U Expired - Fee Related CN210051548U (en) | 2019-06-19 | 2019-06-19 | Air spring device for modal test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210051548U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579237A (en) * | 2020-06-23 | 2020-08-25 | 北京强度环境研究所 | Free boundary simulation system for modal test |
| CN112377734A (en) * | 2020-11-05 | 2021-02-19 | 张勤玲 | Monitoring device for water conservancy construction management and using method thereof |
-
2019
- 2019-06-19 CN CN201920927451.8U patent/CN210051548U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579237A (en) * | 2020-06-23 | 2020-08-25 | 北京强度环境研究所 | Free boundary simulation system for modal test |
| CN112377734A (en) * | 2020-11-05 | 2021-02-19 | 张勤玲 | Monitoring device for water conservancy construction management and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200211 Termination date: 20200619 |