CN211951287U - High-stress noise reduction plate spring - Google Patents
High-stress noise reduction plate spring Download PDFInfo
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- CN211951287U CN211951287U CN201922482972.XU CN201922482972U CN211951287U CN 211951287 U CN211951287 U CN 211951287U CN 201922482972 U CN201922482972 U CN 201922482972U CN 211951287 U CN211951287 U CN 211951287U
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- leaf spring
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Abstract
The utility model provides a high stress noise reduction plate spring, which comprises a first reed, a second reed, a third reed, a fourth reed, a middle gasket and a third reed, wherein the first reed, the second reed, the third reed, the fourth reed, the middle straight section and the middle straight section are sequentially stacked from top to bottom; the middle straight sections of the first reed, the second reed, the third reed and the fourth reed are connected through bolts; the positions, close to the end parts, of the two ends of the first reed, the second reed, the third reed and the fourth reed are provided with a hoop, the hoop is a U-shaped hoop, and rubber gaskets are arranged at the contact positions of the two sides of the U-shaped hoop and the first reed, the second reed, the third reed and the fourth reed; wear-resistant gaskets are arranged at two ends of each of the second reed, the third reed and the fourth reed and are positioned between the two adjacent reeds; the end parts of the left end and the right end of the first reed are curled upwards to form fully-wrapped rolling lugs, and bushings are fixedly sleeved in the two fully-wrapped rolling lugs; the end part of one end of the second reed is curled upwards to form a semi-wrapped lug, and the other end of the second reed is a straight section, so that the problem that noise generated by an electric automobile plate spring needs to be further reduced is solved.
Description
Technical Field
The utility model belongs to the technical field of the passenger train spare part, more specifically relate to a leaf spring of making an uproar falls in high stress.
Background
The automobile steel plate spring can play three roles of buffering, vibration damping and guiding, and has the advantages of simple structure, reliable use, simple process, low manufacturing cost and convenient maintenance.
Because the leaf spring collides and rubs with each other between the piece when working, will produce the noise when working. At present, most of urban buses adopt new energy (electric), and because electric automobiles do not have engines and only have current sound when the buses move, the requirement for noise reduction of plate springs is stricter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a highly stressed leaf spring of making an uproar that falls to further reduce the produced noise of electric automobile.
In order to achieve the technical purpose, the technical scheme of the utility model provides a high stress noise reduction plate spring, which comprises a first reed, a second reed, a third reed, a fourth reed, a gasket and a third reed, wherein the first reed, the second reed, the third reed, the fourth reed, the third reed, the fourth reed;
the middle straight sections of the first reed, the second reed, the third reed and the fourth reed are provided with through holes, bolts are inserted into the through holes, the bolts sequentially penetrate through the first reed, the second reed, the third reed and the fourth reed and the gasket positioned between the two adjacent reeds, and the bottoms of the bolts are fixedly connected through nuts;
the positions, close to the end parts, of the two ends of the first reed, the second reed, the third reed and the fourth reed are respectively provided with a hoop, the hoops are U-shaped hoops, the two free ends of the U-shaped hoops are connected through bolts, the bottom of the U-shaped hoops is fixedly connected to the bottom of the fourth reed through rivets, and rubber gaskets are arranged at the positions, opposite to the first reed, the second reed, the third reed and the fourth reed, of the two sides of each U-shaped hoop;
wear-resistant gaskets are arranged on the upper surfaces of the two ends of each of the second reed, the third reed and the fourth reed, and the wear-resistant gaskets are positioned between the two adjacent reeds;
the end parts of the left end and the right end of the first reed are curled upwards to form fully-wrapped rolling lugs, and bushings are fixedly sleeved in the two fully-wrapped rolling lugs;
the end part of one end of the second reed is curled upwards to form a semi-wrapped curling lug, and the other end of the second reed is a straight section.
Further, the wear-resisting gasket comprises an iron plate, rubber vulcanized on the upper surface of the iron plate and two protrusions positioned at the bottom of the iron plate, and two noise reduction holes in interference fit with the two protrusions on the wear-resisting gasket are punched at two ends of each of the second reed to the fourth reed.
Further, the bushing includes a tubular rubber elastic body, an inner tube coupled to an inner side of the rubber elastic body, and an outer tube coupled to an outer side of the rubber elastic body, and the bushing is connected with the lug in an interference fit.
Further, the length of the inner pipe is larger than that of the rubber elastic body and the outer pipe, and two ends of the inner pipe are provided with check rings.
Furthermore, a groove is formed in the bushing along the height direction of the bushing, and a connecting line of the groove and the center line of the bushing forms an angle of 45 degrees with the horizontal direction.
Furthermore, the upper surface of the first reed is a horizontal plane, the two ends of the bottom of the first reed are correspondingly installed, the U-shaped hoop is arranged at an inwards concave arc, the thickness of the arc is gradually reduced along with the middle straight section of the first reed, the end part of the first reed is just opposite to the position of the wear-resistant gasket on the second reed and is arranged at a horizontal section, and the arc is in transitional connection with the horizontal section and the horizontal section.
Further, the upper surfaces of the second reed, the third reed and the fourth reed are horizontal planes, and the thickness of the horizontal section from the middle straight section to the two ends for mounting the wear-resistant gasket is gradually reduced.
Compared with the prior art, the beneficial effects of the utility model include: the utility model provides a leaf spring of making an uproar falls in high stress includes four reeds, and the reed is small in quantity, light in weight, has the clearance between the two adjacent reeds simultaneously, has improved the stress intensity of leaf spring, has reduced the noise that mutual collision produced simultaneously.
The both ends of first to fourth reed all are provided with the clamp near the position department of tip, the both sides of clamp all are equipped with rubber gasket with the relative position department of reed, have reduced wearing and tearing between the two to the noise reduction.
The upper surfaces at the two ends of the second reed to the fourth reed are provided with wear-resistant gaskets, each wear-resistant gasket comprises a bottom plate and rubber vulcanized on the upper surface of the bottom plate, the iron plates and the protrusions arranged at the bottoms of the iron plates are convenient to mount, and the rubber arranged on the upper surfaces of the iron plates is used for reducing noise generated by collision between the reeds.
Drawings
Fig. 1 is a schematic structural diagram of a high stress noise reduction leaf spring provided by the present invention;
FIG. 2 is a cross-sectional view taken along B-B of FIG. 1;
FIG. 3 is a front view of the cleat;
FIG. 4 is a top view of the cleat;
FIG. 5 is an enlarged partial view of the end of FIG. 1;
FIG. 6 is a cross-sectional view of the bushing;
FIG. 7 is a front view of the first leaf spring;
FIG. 8 is a front view of second through fourth reeds;
FIG. 9 is a top view of one end of the second through fourth leaves;
fig. 10 is an experimental schematic diagram of a high stress noise reducing leaf spring provided by the present invention;
description of reference numerals:
1-first reed, 2-second reed, 3-third reed, 4-fourth reed, 5-middle spacer, 6-bolt, 7-hoop, 8-wear-resistant spacer, 9-full-wrap lug, 10-half-wrap lug, 11-gap, 12-rivet, 13-bushing, 14-sleeve, 15-bolt, 16-nut, 17-rubber gasket, 18-U-shaped hoop, 101-middle straight section, 102-horizontal section, 103-arc, 104-noise reduction hole, 201-iron plate, 202-rubber, 203-bulge, 301-inner tube, 302-rubber elastomer, 303-outer tube and 304-retainer ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to further reduce the produced noise of electric automobile, the utility model discloses an embodiment provides a leaf spring of making an uproar falls in high stress. See in particular fig. 1-10.
As shown in figure 1, the high-stress noise reduction plate spring comprises a first reed 1, a second reed 2, a third reed 3 and a fourth reed 4, a gap exists between every two adjacent reeds, the quantity of the reeds is small, the weight is light, the stress strength of the plate spring is improved, and meanwhile, noise generated by mutual collision is reduced.
In order to reduce the abrasion caused by collision friction between two adjacent reeds and reduce the noise generated by the friction, an intermediate gasket 5 is arranged between the middle straight sections 101 of the two adjacent reeds. The middle straight section 101 of the first reed, the second reed, the third reed, the fourth reed is provided with a through hole, a bolt 6 is inserted into the through hole, the bolt 6 sequentially penetrates through the through hole in the first reed, the second reed, the middle gasket 5 between the two adjacent reeds, and the bottom of the bolt 6 is fixedly connected through a nut.
As shown in figure 2, the both ends of first to fourth reed are close to the position department of tip and all have clamp 7, clamp 7 establishes to U-shaped clamp 18, connect through bolt 15 between two free ends of U-shaped clamp 18, two still be equipped with sleeve 14 between the free end, the sleeve 14 cover is established the outside of bolt 15, rivet 12 fixed connection is passed through to the bottom of U-shaped clamp 18 the bottom of fourth reed. In order to reduce noise generated by friction, rubber gaskets 17 are arranged at the positions where the two side walls of the U-shaped clamp 18 and the first reed to the fourth reed are in contact with each other, and the U-shaped clamp and the reeds are isolated by the rubber gaskets, so that mutual abrasion is avoided, and the noise is reduced.
As shown in fig. 3 and 4, in order to reduce noise generated by collision friction between two adjacent reeds, wear-resistant gaskets are arranged on the upper surfaces of the two ends of each of the second to fourth reeds, and the wear-resistant gaskets are positioned between the two adjacent reeds; the wear-resistant gasket 8 comprises an iron plate 201, rubber 202 vulcanized on the upper surface of the iron plate 201 and two protrusions 203 positioned at the bottom of the iron plate 201, and two noise reduction holes in interference fit with the two protrusions 203 on the wear-resistant gasket 8 are punched at two ends of each of the second reed to the fourth reed. The wear-resistant gasket 8 is inserted into the noise reduction hole 104 through the two protrusions 203 and is connected with the noise reduction hole 104 in an interference fit manner, so that the installation is convenient; the rubber on the iron plate 201 reduces noise generated by collision friction between two adjacent reeds.
As shown in fig. 5 and 6, the end parts of the left and right ends of the first reed 1 are curled upwards to form fully-wrapped ears 9, and bushings 13 are fixedly sleeved in both the fully-wrapped ears 9; the bushing 13 includes a tubular rubber elastic body 302, an inner tube 301 bonded to the inside of the rubber elastic body 302, and an outer tube 303 bonded to the outside of the rubber elastic body 302, and the bushing 13 is interference-fitted to the full-wrapping lug 9. The provision of the bush further reduces noise generated by vibration and improves the wear resistance of the leaf spring for use in a lug.
Further, in order to reduce the generated noise, the length of the inner pipe 301 is greater than the lengths of the rubber elastic body 302 and the outer pipe 303, and both ends of the inner pipe 301 are sleeved with retaining rings 304.
In order to facilitate the press mounting of the bush 13 in the full-wrapping lug 9 and reduce the noise generated in the use process of the plate spring, a groove 14 is formed in the bush 13 along the height direction of the bush 13, and a line connecting the groove 14 and the center line of the bush 13 forms an angle of 45 degrees with the horizontal direction, so that the elasticity of the bush is improved, and the press mounting is convenient.
The end part of one end of the second reed 2 is curled upwards to form a semi-wrapped ear 10, and the other end is a straight section.
As shown in fig. 7 and 9, the positions of the two ends of the bottom of the first reed 1 corresponding to the positions where the U-shaped clamp 18 is installed are provided with concave circular arcs 103, the thickness from the middle straight section 101 of the first reed 1 to the circular arcs 103 is gradually reduced, and the positions where the end parts of the two ends of the first reed 1 are over against the wear-resistant gasket 5 on the second reed 2 are provided with horizontal sections 102.
As shown in fig. 8 and 9, the thicknesses of the middle straight section 101 of the second reed 2, the third reed 3 and the fourth reed 4 to the horizontal section 102 at two ends for mounting the wear-resistant gasket 8 are gradually reduced, the upper surfaces of the first reed to the fourth reed are all set to be horizontal planes, and the bottom surfaces at two sides of the middle straight section are inclined planes inclined upwards.
The first reed, the second reed, the third reed and the fourth reed are all formed by rolling.
As shown in fig. 10, the high stress noise reduction plate spring provided by the present invention is tested, and the test results are shown in table 1 below, wherein the initial arc height (H) is 88+6mm, and when the load (P)33720N is applied, the arc height (H) is 15+6 mm. The verification load is 54000N, and the stress strength is improved.
TABLE 1 relationship of applied load (P) to corresponding arc height (H)
| Load (N) | Arc height H (mm) | Clamping rigidity (N/mm) |
| () | 88±6 | 470±28.2 |
| 33720 | 15±6 | |
| Verification load (N) | 54000 |
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. The high-stress noise reduction leaf spring is characterized by comprising a first reed, a second reed, a third reed, a fourth reed;
the middle straight sections of the first reed, the second reed, the third reed and the fourth reed are provided with through holes, bolts are inserted into the through holes, the bolts sequentially penetrate through the first reed, the second reed, the third reed and the fourth reed and the gasket positioned between the two adjacent reeds, and the bottoms of the bolts are fixedly connected through nuts;
the positions, close to the end parts, of the two ends of the first reed, the second reed, the third reed and the fourth reed are respectively provided with a hoop, the hoops are U-shaped hoops, the two free ends of the U-shaped hoops are connected through bolts, the bottom of the U-shaped hoops is fixedly connected to the bottom of the fourth reed through rivets, and rubber gaskets are arranged at the positions, opposite to the first reed, the second reed, the third reed and the fourth reed, of the two sides of each U-shaped hoop;
wear-resistant gaskets are arranged on the upper surfaces of the two ends of each of the second reed, the third reed and the fourth reed, and the wear-resistant gaskets are positioned between the two adjacent reeds;
the end parts of the left end and the right end of the first reed are curled upwards to form fully-wrapped rolling lugs, and bushings are fixedly sleeved in the two fully-wrapped rolling lugs;
the end part of one end of the second reed is curled upwards to form a semi-wrapped curling lug, and the other end of the second reed is a straight section.
2. The high stress noise reducing leaf spring of claim 1, wherein the wear resistant pad comprises an iron plate, rubber vulcanized on the upper surface of the iron plate, and two protrusions at the bottom of the iron plate, and two noise reducing holes are formed at two ends of each of the second to fourth spring leaves and are in interference fit with the two protrusions on the wear resistant pad.
3. The high stress noise reducing leaf spring of claim 1 wherein the bushing comprises a tubular rubber elastomer, an inner tube bonded to an inner side of the rubber elastomer, and an outer tube bonded to an outer side of the rubber elastomer, the bushing being in interference fit connection with the eye.
4. The high stress noise reducing leaf spring of claim 3 wherein the length of the inner tube is greater than the length of the rubber elastomer and the outer tube, and the inner tube is provided with a retaining ring at each end.
5. The high stress noise reducing leaf spring of claim 4 wherein the bushing has a slot formed therein along the height of the bushing, the line connecting the slot to the centerline of the bushing being at a 45 ° angle to the horizontal.
6. The high-stress noise reduction plate spring according to claim 1, wherein the upper surface of the first spring plate is a horizontal plane, the two ends of the bottom of the first spring plate corresponding to the positions where the U-shaped clamping band is installed are provided with concave circular arcs, the thickness from the middle straight section of the first spring plate to the circular arcs is gradually reduced, the positions, opposite to the wear-resistant gasket on the second spring plate, of the two ends of the first spring plate are provided with horizontal sections, and the circular arcs are in transition connection with the middle straight section and the horizontal sections.
7. The high stress noise reducing leaf spring of claim 6 wherein the upper surfaces of the second, third and fourth leaves are horizontal planes, the thickness of the horizontal section gradually decreasing from the middle straight section to the two ends for mounting the wear resistant shims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482972.XU CN211951287U (en) | 2019-12-31 | 2019-12-31 | High-stress noise reduction plate spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482972.XU CN211951287U (en) | 2019-12-31 | 2019-12-31 | High-stress noise reduction plate spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211951287U true CN211951287U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922482972.XU Active CN211951287U (en) | 2019-12-31 | 2019-12-31 | High-stress noise reduction plate spring |
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| Country | Link |
|---|---|
| CN (1) | CN211951287U (en) |
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