CN113059974A - Composite plate spring protection device - Google Patents
Composite plate spring protection device Download PDFInfo
- Publication number
- CN113059974A CN113059974A CN202010007922.0A CN202010007922A CN113059974A CN 113059974 A CN113059974 A CN 113059974A CN 202010007922 A CN202010007922 A CN 202010007922A CN 113059974 A CN113059974 A CN 113059974A
- Authority
- CN
- China
- Prior art keywords
- plate spring
- composite
- bearing block
- elastic bearing
- rigid support
- Prior art date
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 77
- 238000009434 installation Methods 0.000 claims description 8
- 208000002740 Muscle Rigidity Diseases 0.000 description 16
- 238000003825 pressing Methods 0.000 description 15
- 239000000725 suspension Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
- B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a composite material plate spring protection device, which comprises a rigid support and an elastic bearing block arranged on the rigid support, wherein the rigid support is arranged in the middle of the composite material plate spring; or the rigid support is arranged on the frame, when the vehicle is empty, a gap is formed between the elastic bearing block and the composite plate spring, and the elastic bearing block can be abutted against the middle part of the composite plate spring along with the increase of the load on the frame. The invention has the advantages of simple and reliable structure, comfort in empty vehicles and bearing capacity in heavy vehicles, protection for the composite plate spring when the vehicle is overweight, and the like.
Description
Technical Field
The invention relates to an automobile suspension, in particular to a composite plate spring protection device.
Background
The plate spring is an important component of a suspension of a trailer, a semitrailer, a passenger car and the like, and has very important influence on the performance of the whole car. At present, 4 variable-section few leaf springs or 7-14 constant-section leaf springs are mainly adopted in suspension devices of trailers, semi-trailers and the like, the leaf springs are heavy and are not beneficial to realizing the light weight of the trailers, meanwhile, large friction force exists between every two leaf springs, and noise which is difficult to accept is generated along with the increase of vibration speed and the increase of the friction force. The resin-based composite material has the advantages of light weight, high specific strength, high fatigue limit, corrosion resistance, vibration reduction and noise reduction, and is produced in light-weight manufacturing of automobiles. For trailers and semitrailers, the load difference between an empty car and a heavy car is obvious, and if the rigidity of the composite plate spring is set to be lower, the composite plate spring has better comfort during the empty car, but the load-bearing capacity is deficient during the heavy car; if set up the higher with combined material leaf spring rigidity, although bearing capacity is stronger when heavily driving, the travelling comfort during the air traffic is relatively poor, is difficult to accomplish and compromises. In addition, when the vehicle is overweight, the composite plate spring is easy to damage due to the fact that the corresponding protection device is not arranged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the composite plate spring protection device which is simple and reliable in structure, can give consideration to both the comfort in empty vehicles and the bearing capacity in heavy vehicles and can provide protection when the vehicles are overweight.
In order to solve the technical problems, the invention adopts the following technical scheme:
a composite plate spring protection device comprises a rigid support and an elastic bearing block arranged on the rigid support, wherein the rigid support is arranged in the middle of the composite plate spring, a gap is formed between the elastic bearing block and a frame when the composite plate spring protection device is empty, and the elastic bearing block can be abutted against the frame along with the increase of the load on the frame; or the rigid support is arranged on the frame, when the vehicle is empty, a gap is formed between the elastic bearing block and the composite plate spring, and the elastic bearing block can be abutted against the middle part of the composite plate spring along with the increase of the load on the frame.
As a further improvement of the above technical solution: the rigid support is provided with a limiting sleeve, the limiting sleeve is sleeved on the periphery of the elastic bearing block, and a gap is reserved between the elastic bearing block and the limiting sleeve.
As a further improvement of the above technical solution: the rigid support comprises a support main body, a supporting plate and an installation sleeve, the support main body is connected with the supporting plate through a fastening assembly, the limiting sleeve and the installation sleeve are respectively arranged on two sides of the supporting plate, and the installation sleeve is sleeved with the support main body.
As a further improvement of the above technical solution: the elastic bearing block is of a hollow structure, and the hollow part corresponds to the fastening component.
Compared with the prior art, the invention has the advantages that: the composite plate spring protection device disclosed by the invention can form secondary rigidity with a composite plate spring, has smaller rigidity when empty, the elastic bearing block is not contacted with a frame or the composite plate spring, and the load on the frame is borne by the composite plate spring; along with the increase of the load, the elastic bearing block is contacted with the frame, and the load is jointly born by the composite material plate spring and the elastic bearing block; when the vehicle is heavy, the composite material plate spring and the elastic bearing block provide high rigidity together, so that the suspension system can meet the vehicle operation requirement; furthermore, the empty comfort of the whole vehicle can be improved under the condition of ensuring the unchanged heavy vehicle bearing capacity by reducing the rigidity of the composite plate spring and improving the rigidity of the elastic bearing block; the inflection point displacement of the secondary rigidity can be adjusted according to the performance requirement of the whole vehicle by adjusting the gap between the elastic bearing block and the frame or the composite plate spring; when the compression degree of the elastic bearing block is too large, the rigid support can play a role of hard stop, so that the frame is prevented from contacting with the composite material leaf spring, and the composite material leaf spring is effectively protected from bearing too large load or impact.
Drawings
Fig. 1 is a schematic view of the external structure of the composite leaf spring protection device of the present invention.
Fig. 2 is a schematic cross-sectional view of the composite leaf spring protection device of the present invention.
Fig. 3 is an enlarged schematic view of the rigid support in the present invention.
Fig. 4 is an enlarged structural view of the middle portion of the composite plate spring according to the present invention.
Fig. 5 is a schematic view of the composite leaf spring protection device of the present invention mounted to a vehicle frame.
The reference numerals in the figures denote: 1. a composite leaf spring; 11. a horizontal segment; 12. an inclined section; 13. a curved section; 2. a rigid support; 21. a limiting sleeve; 22. a support body; 23. a support plate; 24. installing a sleeve; 3. an elastic bearing block; 4. a frame; 51. an upper pressure plate; 52. a lower pressing plate; 53. a composite gasket; 54. a convex ring; 55. mounting holes; 6. a fastening assembly; 71. a wear plate; 72. a protection plate; 8. an axle.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 to 3 and 5 show an embodiment of the composite leaf spring protection device of the present invention, the composite leaf spring protection device of the present embodiment includes a rigid support 2 and an elastic bearing block 3 disposed on the rigid support 2, the rigid support 2 is disposed in the middle of the composite leaf spring 1, when the vehicle is empty, a gap is formed between the elastic bearing block 3 and the vehicle frame 4, and the elastic bearing block 3 can abut against the vehicle frame 4 as the load on the vehicle frame 4 increases. Of course, in other embodiments, the rigid support 2 may be disposed on the frame 4, and the elastic support block 3 may abut against the middle portion of the composite leaf spring 1 with a gap between the elastic support block 3 and the composite leaf spring 1 when the vehicle is empty and with an increase in load on the frame 4. Wherein the composite leaf spring 1 preferably comprises a resin matrix and reinforcing fibers, which may be: carbon fiber, glass fiber, aramid fiber, natural fiber or the like; the elastic bearing block 3 is preferably made of a polymer elastic material such as rubber or polyurethane.
The composite plate spring protection device can be matched with the composite plate spring 1 to form secondary rigidity, and has smaller rigidity when empty, the elastic bearing block 3 is not contacted with the frame 4, and the load on the frame 4 is borne by the composite plate spring 1; along with the increase of the load, the elastic bearing block 3 is contacted with the frame 4, and the load is jointly born by the composite material plate spring 1 and the elastic bearing block 3; when the vehicle is heavy, the composite material plate spring 1 and the elastic bearing block 3 provide high rigidity together, so that the suspension system can meet the vehicle operation requirement; furthermore, the empty comfort of the whole vehicle can be improved under the condition of ensuring the unchanged heavy vehicle bearing capacity by reducing the rigidity of the composite material plate spring 1 and improving the rigidity of the elastic bearing block 3; the inflection point displacement of the secondary rigidity can be adjusted according to the performance requirement of the whole vehicle by adjusting the gap between the elastic bearing block 3 and the frame 4; when the compression degree of the elastic bearing block 3 is too large, the rigid support 2 can play a role of hard stop, so that the frame 4 is prevented from contacting the composite material leaf spring 1, and the composite material leaf spring 1 is effectively protected from bearing too large load or impact.
Further, in this embodiment, the rigid support 2 is provided with a limiting sleeve 21, the limiting sleeve 21 is sleeved on the periphery of the elastic bearing block 3, and a gap is formed between the elastic bearing block 3 and the limiting sleeve 21. When the vehicle is in a heavy vehicle, the elastic bearing block 3 is compressed and deformed, and a gap between the elastic bearing block 3 and the limiting sleeve 21 is partially filled, so that higher rigidity is provided; when the vehicle frame 4 is compressed to a certain displacement, the rigid support 2 can play a role of hard stop, the composite plate spring 1 can be effectively protected from bearing excessive load or impact, nonlinear rigidity is realized, the overload bearing capacity of the vehicle is improved, and the structure is simple and reliable.
Furthermore, in this embodiment, the rigid support 2 includes a support main body 22, a support plate 23 and a mounting sleeve 24, the support main body 22 is connected to the support plate 23 through the fastening assembly 6, the limiting sleeve 21 and the mounting sleeve 24 are respectively disposed on two sides of the support plate 23, and the mounting sleeve 24 is sleeved on the support main body 22. The rigid support 2 of this structure can realize the reliable installation of elasticity carrier block 3, and bearing capacity is strong, and installation cover 24 cup joints with support main part 22 and locks through fastening components 6, easily dismouting, maintenance.
Furthermore, in the present embodiment, the elastic bearing block 3 is a hollow structure, and the hollow portion corresponds to the fastening component 6. Hollow structure's elasticity carrier block 3 multiplicable deflection, and fastening component 6 specifically can be bolt and nut etc. and nut and bolt upper end are located the cavity intracavity, and appearance quality is good.
As shown in fig. 4, an upper pressing plate 51 and a lower pressing plate 52 are respectively fixed on the upper and lower sides of the middle of the composite plate spring 1 according to the present invention. When the middle part of the composite plate spring 1 is mounted on the axle 8 through a U-bolt, the upper pressing plate 51 and the lower pressing plate 52 can provide a certain protection for the composite plate spring 1.
Further, in the present embodiment, the composite material spacers 53 are disposed between the upper pressing plate 51 and the composite material plate spring 1, and between the composite material plate spring 1 and the lower pressing plate 52. The composite material gasket 53 is beneficial to solving the problem of overlarge local stress caused by the direct contact between the upper pressing plate 51 and the lower pressing plate 52 and the composite material plate spring 1, and the service life of the composite material plate spring 1 can be greatly prolonged; preferably, the thickness of the composite material spacer 53 is not greater than 4 mm.
Furthermore, in the present embodiment, the upper pressing plate 51 and the lower pressing plate 52 are both provided with a protruding ring 54 and a mounting hole 55 concentrically arranged with the protruding ring 54, and the upper pressing plate 51 and the lower pressing plate 52 are connected by the fastening assembly 6 disposed in the mounting hole 55, although in other embodiments, the upper pressing plate 51 and the lower pressing plate 52 may be fixed by gluing or the like. The convex ring 54 and the mounting hole 55 are used for positioning during assembly, the convex ring 54 on the upper pressure plate 51 can also be matched with the support main body 22 in a positioning way, and the composite plate spring 1 is effectively prevented from moving back and forth in the using process.
Further, in the present embodiment, wear plates 71 are fixedly disposed on the upper sides of the two ends of the composite leaf spring 1, and protection plates 72 are fixedly disposed on the lower sides of the two ends. The wear-resisting plate 71 is used for transferring the load of the vehicle body part to the composite plate spring 1, and meanwhile, the balance beam or the supporting beam on the vehicle frame 4 is prevented from directly rubbing against the composite plate spring 1, so that the service life of the composite plate spring 1 is prolonged; the lower surfaces of the two ends of the composite plate spring 1 are provided with the protection plates 72, so that the situation that when the two ends of the composite plate spring 1 are installed or pass through uneven road surfaces, the limit bolts below the end part of the composite plate spring 1 are directly contacted with the composite plate spring 1 to cause damage can be avoided.
Further, in the present embodiment, the composite plate spring 1 includes a horizontal section 11 located in the middle, inclined sections 12 located at both ends and inclined upward, and a curved section 13 for smoothly connecting the horizontal section 11 and the inclined sections 12, wherein the thickness of the horizontal section 11 is greater than that of the inclined sections 12, and the thickness of the curved section 13 decreases from the horizontal section 11 to the inclined sections 12. The composite plate spring 1 in the form is reasonable in structure and beneficial to keeping stress at each position consistent.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (4)
1. A composite leaf spring protection device which characterized in that: the composite material plate spring is characterized by comprising a rigid support (2) and an elastic bearing block (3) arranged on the rigid support (2), wherein the rigid support (2) is arranged in the middle of a composite material plate spring (1), a gap is formed between the elastic bearing block (3) and a frame (4) when the vehicle is empty, and the elastic bearing block (3) can be abutted against the frame (4) along with the increase of the load on the frame (4); or the rigid support (2) is arranged on the frame (4), when the vehicle is empty, a gap is formed between the elastic bearing block (3) and the composite plate spring (1), and the elastic bearing block (3) can be abutted against the middle part of the composite plate spring (1) along with the increase of the load on the frame (4).
2. The composite leaf spring protection device of claim 1, wherein: be equipped with stop collar (21) on rigid support (2), stop collar (21) cover is located elasticity carrier block (3) periphery, elasticity carrier block (3) with the clearance has between stop collar (21).
3. The composite leaf spring protection device of claim 2, wherein: rigid support (2) include support main part (22), backup pad (23) and installation cover (24), support main part (22) with backup pad (23) are connected through fastening components (6), stop collar (21) and installation cover (24) are located respectively the both sides of backup pad (23), installation cover (24) with support main part (22) cup joint.
4. The composite leaf spring protection device of claim 3, wherein: the elastic bearing block (3) is of a hollow structure, and the hollow part corresponds to the fastening component (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007922.0A CN113059974B (en) | 2020-01-02 | 2020-01-02 | Composite plate spring protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007922.0A CN113059974B (en) | 2020-01-02 | 2020-01-02 | Composite plate spring protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113059974A true CN113059974A (en) | 2021-07-02 |
| CN113059974B CN113059974B (en) | 2024-07-16 |
Family
ID=76558343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010007922.0A Active CN113059974B (en) | 2020-01-02 | 2020-01-02 | Composite plate spring protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113059974B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230011251A1 (en) * | 2021-07-07 | 2023-01-12 | Hyundai Mobis Co., Ltd. | Suspension for vehicle |
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|---|---|---|---|---|
| DE102008052756A1 (en) * | 2008-10-22 | 2010-04-29 | Magna Steyr Fahrzeugtechnik Ag & Co. Kg | Wheel suspension for use in motor vehicle, has elastic component transmitting forces between medium and spring and/or between body and spring, where forces are transmitted to transmission section of elastic component by contact |
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| CN209208390U (en) * | 2018-11-01 | 2019-08-06 | 孙玉军 | A kind of compound leaf spring that can be broken safely when damage |
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|---|---|---|---|---|
| DE102008052756A1 (en) * | 2008-10-22 | 2010-04-29 | Magna Steyr Fahrzeugtechnik Ag & Co. Kg | Wheel suspension for use in motor vehicle, has elastic component transmitting forces between medium and spring and/or between body and spring, where forces are transmitted to transmission section of elastic component by contact |
| CN102991298A (en) * | 2012-11-28 | 2013-03-27 | 三一重工股份有限公司 | Combined cantilever and engineering machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230011251A1 (en) * | 2021-07-07 | 2023-01-12 | Hyundai Mobis Co., Ltd. | Suspension for vehicle |
| US11660923B2 (en) * | 2021-07-07 | 2023-05-30 | Hyundai Mobis Co., Ltd. | Suspension for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113059974B (en) | 2024-07-16 |
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