CN202091416U - variable cross-section steel plate spring - Google Patents
variable cross-section steel plate spring Download PDFInfo
- Publication number
- CN202091416U CN202091416U CN2011201792404U CN201120179240U CN202091416U CN 202091416 U CN202091416 U CN 202091416U CN 2011201792404 U CN2011201792404 U CN 2011201792404U CN 201120179240 U CN201120179240 U CN 201120179240U CN 202091416 U CN202091416 U CN 202091416U
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- Prior art keywords
- spring
- sheet
- section
- section steel
- variable
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Abstract
The utility model discloses a variable cross section leaf spring, include the variable cross section spring leaf with the mutual stack of multi-disc, the middle part of every spring leaf is straight section, and straight section both ends extend has the segmental arc, and wherein, the segmental arc of every spring leaf of stack on the spring leaf of bottom outwards extends in proper order have the spill section and with the straightway of the tip laminating of the spring leaf of bottom, the tie point of spill section and straightway and the spring leaf of bottom and the tie point of car are located same vertical line. The utility model discloses a variable cross section leaf spring stress distribution is even, assembly rigidity is strong, long fatigue life and bearing capacity are strong.
Description
Technical field
The utility model relates to automobile leaf spring, relates in particular to a kind of variable-section steel sheet spring.
Background technique
Automobile leaf spring is most widely used a kind of elastic element in the automotive suspension, and it is an approximate equicohesive elastic beam that is combined by some wide alloy spring sheets.In car running process, it mainly plays power and the moment of transfer function between vehicle frame and vehicle body, the impulsive load that alleviation produces because of Uneven road, and the vibrations of alleviation vehicle body, the smoothness that guarantees automobile running, the travelling comfort that frame is taken advantage of personnel, the stability that carries cargo there are positive effect.
As shown in Figure 1, at present the variable-section steel sheet spring that adopted of automobile is made up of the spring sheet 10,11,12,13 of 4 mutual superposition, and each flat spring sheet is made up of flat segments 101 and two sections arcuate segments 102 extending outward along flat segments 101 two ends.
Yet, because variable-section steel sheet spring links to each other with automobile at the A place, when variable-section steel sheet spring is stressed, the force bearing point of the first flat spring sheet 10 is at the A place, the force bearing point of the second flat spring sheet 11, the 3rd flat spring sheet 12 and the 4th flat spring sheet 13 is all at the B place, so, the stressed action length of the first flat spring sheet 10 is L
A, the stressed action length of the second flat spring sheet 11, the 3rd flat spring sheet 12 and the 4th flat spring sheet 13 is L
B, and L
ALess than L
BThereby, the stress level of the first flat spring sheet 10 is apparently higher than other spring sheets, and the stress level difference of other spring sheets is little, thereby cause the stress distribution of each flat spring sheet of variable-section steel sheet spring unequal, and then make that the assembly rigidity of variable-section steel sheet spring is on the low side, reduced the fatigue life and the bearing capacity of leaf spring.
Therefore, be necessary that the variable-section steel sheet spring that provides a kind of end to bend overcomes the problems referred to above.
The model utility content
The purpose of this utility model provides the variable-section steel sheet spring that a kind of stress distribution is even, assembly rigidity is strong, fatigue life is long and bearing capacity is strong.
To achieve these goals, the tapered spring sheet that the utility model provides a kind of variable-section steel sheet spring to comprise the multi-disc mutual superposition, the middle part of every flat spring sheet is a flat segments, the flat segments two ends are extended with arcuate segment, wherein, the straightway that the arcuate segment that is superimposed upon each spring sheet on the spring sheet of bottom outwards is extended with the spill section successively and fits with the end of the spring sheet of bottom, the tie point of the tie point of spill section and straightway and the spring sheet of bottom and automobile is positioned on the same vertical line.
Preferably, the radian of described spill section is 120 °～150 °.
Preferably, the quantity of described tapered spring sheet is the 2-5 sheet.
Preferably, the radian of the arcuate segment at spring sheet two ends is identical.
Compared with prior art, because the spring sheet that is superimposed upon each spring sheet and bottom on the spring sheet of bottom is positioned on the same vertical line at the applying of straightway place and the tie point of spill section and straightway and the spring sheet of bottom and the tie point of automobile, thereby, when variable-section steel sheet spring is stressed, the stressed action length of spring sheet that is superimposed upon the stressed action length of each spring sheet on the spring sheet of bottom and bottom is identical, thereby make that the stress distribution of these a plurality of tapered spring sheets is even, and then increased the assembly rigidity of variable-section steel sheet spring, and the fatigue life and the bearing capacity of variable-section steel sheet spring have been improved.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of existing variable-section steel sheet spring.
Fig. 2 is the structural representation of the utility model variable-section steel sheet spring.
Fig. 3 is the structural representation of second tapered spring sheet among Fig. 2.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.
With reference to figure 2-3, the variable-section steel sheet spring of present embodiment comprises the tapered spring sheet of 4 mutual superposition, promptly is positioned at the bottom spring sheet 20 of bottom, is superimposed upon second spring sheet 21, the 3rd spring sheet 22 and the 4th spring sheet 23 on the bottom spring sheet 20 successively.Wherein, the middle part of bottom spring sheet 20 is prismatic bottom surface flat segments 201, and bottom surface flat segments 201 is extended with the radian of 202, two bottom surface arcuate segments 202 of bottom surface arcuate segment from variable cross section to two ends is identical.Second spring sheet 21, the 3rd spring sheet 22 that are superimposed upon on the bottom spring sheet 20 are identical with the structure of the 4th spring sheet 23.
With reference to figure 3, with second spring sheet 21 is example, the middle part of the second flat spring sheet 21 is prismatic flat segments 210, flat segments 210 is extended the arcuate segment 211 of variable cross section to two ends, the straightway 213 that arcuate segment 211 outwards also extends spill section 212 successively and fits with the end of bottom spring sheet 20, and the tie point A of the tie point C of spill section 212 and straightway 213 and bottom spring sheet 20 and automobile (not shown) is positioned on the same vertical line.The radian of two arcuate segments 211 is identical.Preferably, the radian of described spill section 212 is 120 °～150 °.In the present embodiment, the radian of described spill section 212 is 148 °.
Table 1 is the experimental result contrast of existing variable-section steel sheet spring and the utility model variable-section steel sheet spring.
As can be known from the above table, improved more than 100% the fatigue life of the existing variable-section steel sheet spring of the fatigue life ratio of the utility model variable-section steel sheet spring, and assembly rigidity has increased by 12%.
As shown from the above technical solution, because the spring sheet that is superimposed upon each spring sheet and bottom on the spring sheet of bottom is positioned on the same vertical line at the applying of straightway place and the tie point of spill section and straightway and the spring sheet of bottom and the tie point of automobile, thereby, when variable-section steel sheet spring is stressed, the stressed action length of spring sheet that is superimposed upon the stressed action length of each spring sheet on the spring sheet of bottom and bottom is identical, thereby make that the stress distribution of these a plurality of tapered spring sheets is even, and then increased the assembly rigidity of variable-section steel sheet spring, and the fatigue life and the bearing capacity of variable-section steel sheet spring have been improved.
Claims (4)
1. variable-section steel sheet spring, the tapered spring sheet that comprises the multi-disc mutual superposition, the middle part of every flat spring sheet is a flat segments, the flat segments two ends are extended with arcuate segment, it is characterized in that, the straightway that the arcuate segment that is superimposed upon each spring sheet on the spring sheet of bottom outwards is extended with the spill section successively and fits with the end of the spring sheet of bottom, the tie point of the tie point of spill section and straightway and the spring sheet of bottom and automobile is positioned on the same vertical line.
2. variable-section steel sheet spring as claimed in claim 1 is characterized in that, the radian of described spill section is 120 °～150 °.
3. variable-section steel sheet spring as claimed in claim 2 is characterized in that, the quantity of described tapered spring sheet is the 2-5 sheet.
4. variable-section steel sheet spring as claimed in claim 3 is characterized in that, the radian of every flat spring sheet two ends arcuate segment is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201792404U CN202091416U (en) | 2011-05-31 | 2011-05-31 | variable cross-section steel plate spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201792404U CN202091416U (en) | 2011-05-31 | 2011-05-31 | variable cross-section steel plate spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091416U true CN202091416U (en) | 2011-12-28 |
Family
ID=45366485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201792404U Expired - Lifetime CN202091416U (en) | 2011-05-31 | 2011-05-31 | variable cross-section steel plate spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342010A (en) * | 2018-11-13 | 2019-02-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Variable cross-section axial force support chip balance |
-
2011
- 2011-05-31 CN CN2011201792404U patent/CN202091416U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342010A (en) * | 2018-11-13 | 2019-02-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Variable cross-section axial force support chip balance |
| CN109342010B (en) * | 2018-11-13 | 2020-09-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Variable cross-section axial force support sheet balance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130909 Address after: Shiyan City, Hubei province 442001 City Road No. 2 District zhangjiewan Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic & Technological Development Zone, Hubei, Wuhan, China, No. 10 Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |