CN112140824A - Protection device of leaf spring structure and leaf spring structure - Google Patents
Protection device of leaf spring structure and leaf spring structure Download PDFInfo
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- CN112140824A CN112140824A CN202010915555.4A CN202010915555A CN112140824A CN 112140824 A CN112140824 A CN 112140824A CN 202010915555 A CN202010915555 A CN 202010915555A CN 112140824 A CN112140824 A CN 112140824A
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- Prior art keywords
- leaf spring
- plate spring
- spring structure
- protection device
- spring
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to the technical field of automobile suspension parts, in particular to a protection device of a plate spring structure and the plate spring structure. The protection device of the plate spring structure comprises two substrates which are respectively used for being attached to two surfaces of an auxiliary spring; the inner surface of the base plate is provided with a wear-resistant pad; side covers extending and covering the side edges of the plate spring are arranged on the two side edges of the base plate; a moving gap is reserved between the two side covers positioned on the same side. The invention has the beneficial effects that: the plate spring is covered by the base plate and the wear-resistant pad, so that the plate spring is prevented from being in direct contact with the U-shaped bolt, the plate spring is prevented from being abraded, the axial clamping force of the U-shaped bolt is effectively guaranteed not to be reduced, and the service life of the plate spring is indirectly prolonged; the side cover covers the side edge of the plate spring, so that the base plate and the plate spring are effectively prevented from generating lateral deviation, and the side edge of the plate spring is prevented from being cut by external foreign matters in the driving process of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobile suspension parts, in particular to a protection device of a plate spring structure and the plate spring structure.
Background
The suspension system is the whole supporting system consisting of a spring and a shock absorber between a vehicle body and a tire. The suspension system should function to support the vehicle body and improve the ride, and different suspension arrangements will give the driver a different driving feel.
The plate spring is a traditional structure in an automobile suspension system and is a plate spring formed by overlapping and combining not less than 1 piece of spring steel. With the continuous development of the technology, a suspension system adopts a main spring and an auxiliary spring to operate in a matching way; the main spring is used for connecting the axle and the frame and bearing the bearing force, traction force, braking force and lateral force of the axle on the frame; the auxiliary spring is positioned above the main spring and plays a role in assisting in bearing load; through the cooperation of main and auxiliary springs, the bearing capacity of the plate spring is improved.
The main spring and the auxiliary spring need to be fixed through the U-shaped bolt, the side edge of the plate spring and the U-shaped bolt are easily abraded in the actual use process, and once the side edge of the plate spring is excessively abraded, the axial clamping force of the U-shaped bolt is easily reduced; the axial clamping force of the U-shaped bolt is reduced, so that the torsional force of the plate spring is increased, and the service life of the plate spring is shortened.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a protection device of a plate spring structure and the plate spring structure to solve the problem that the service life of a plate spring is influenced because the plate spring is easily abraded by a U-shaped bolt in the use process.
The technical scheme for solving the technical problems is as follows: a protection device of a leaf spring structure comprises two substrates which are respectively used for being attached to two surfaces of an auxiliary spring; the inner surface of the base plate is provided with a wear-resistant pad; side covers extending and covering the side edges of the plate spring are arranged on the two side edges of the base plate; a moving gap is reserved between the two side covers positioned on the same side.
The invention has the beneficial effects that: cover the leaf spring through base plate and wear pad, avoid leaf spring and U type bolt to produce direct contact to prevent to produce wearing and tearing to the leaf spring, indirectly promote the life of leaf spring.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, arc-shaped baffles are arranged at two ends of the base plate.
Adopt above-mentioned further scheme's beneficial effect to be, cover plate spring surface through cowl, effectively avoid the leaf spring to be destroyed when the distortion.
Furthermore, the end part of the side cover on one of the base plates is provided with an anti-skid bulge; and the end part of the side cover on the other substrate is provided with a positioning groove matched with the anti-skid bulge.
Adopt above-mentioned further scheme's beneficial effect be, the convenience is to being located the accurate location of two side covers of homonymy.
Further, the balance support is used for bearing the main spring and the auxiliary spring, the two seat plates and the U-shaped bolt; the two seat plates are respectively contacted with the outer surfaces of the two base plates; the balance support and the two seat plates are sequentially connected through U-shaped bolts.
Adopt above-mentioned further scheme's beneficial effect be, conveniently fix main spring and vice spring, simultaneously through the wearability that increases vice spring to promote the life of whole leaf spring structure.
Furthermore, the outer surface of the base plate is also provided with a positioning bulge matched with a positioning hole arranged on the seat plate.
Adopt above-mentioned further scheme's beneficial effect be, avoid the leaf spring installation after, the base plate produces and slides.
A leaf spring structure comprises a main spring, an auxiliary spring and a protection device of the leaf spring structure.
The invention has the beneficial effects that: this leaf spring structure, the wearability of itself is better, greatly increased leaf spring structure's life.
Further, the main spring is formed by overlapping a plurality of steel plate spring pieces; the auxiliary spring is made of glass fiber and epoxy resin.
The beneficial effect who adopts above-mentioned further scheme is, when guaranteeing leaf spring structure bearing capacity, accords with the lightweight production requirement of car simultaneously.
Drawings
Fig. 1 is a partial structural view of a protection device of a plate spring structure in an embodiment of the present invention;
FIG. 2 is a partial side view of a protective device of a leaf spring structure in an embodiment of the invention;
fig. 3 is a partial cross-sectional view of a protective device of a leaf spring structure in an embodiment of the invention;
FIG. 4 is a schematic view of the protective device of the leaf spring structure and the overall structure of the leaf spring structure of the present invention;
FIG. 5 is a graph of axial clamping force versus shifting gap in an embodiment of the present invention;
FIG. 6 is a graph of axial clamping force versus tightening torque for an embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The invention provides the following examples
Example one
As shown in fig. 1 to 4, the present invention provides a protection device of a leaf spring structure, which includes two substrates 1 for attaching two surfaces of an auxiliary spring respectively; the inner surface of the base plate 1 is provided with a wear-resistant pad 2, the wear-resistant pad 2 is made of nylon materials and integrally covers the outer surface of the plate spring in an adhesion mode, and therefore the wear resistance of the outer surface of the plate spring is improved; the two side edges of the base plate 1 are provided with side covers 3 which extend and cover the side edges of the leaf springs, and the side covers 3 are positioned in the middle of the side edges of the base plate 1; the base plate 1 and the side cover 3 are made of metal, and the plate spring is covered by the base plate 1 and the wear-resistant pad 2, so that the plate spring is prevented from being in direct contact with the U-shaped bolt, the plate spring is prevented from being abraded, the axial clamping force of the U-shaped bolt is effectively guaranteed not to be reduced, and the service life of the plate spring is indirectly prolonged; cover the leaf spring side through side cap 3, effectively avoid base plate 1 and leaf spring to produce the lateral deviation, prevent simultaneously that the vehicle from going the in-process outside foreign matter from cutting the leaf spring side.
In the embodiment, a certain moving gap is reserved between the two side covers 3 positioned at the same side; because wear pad 2 has certain bearing limit, but the too big axial clamp force of U type bolt and tightening torque can destroy wear pad 2 and lead to its inefficacy, therefore reserve certain removal clearance and solve above-mentioned problem.
To illustrate the deformation of the leaf spring under an applied load, reference is made specifically to the load and deflection curves shown in fig. 5.
The vertical coordinate is the axial clamping force F of the U-shaped bolt in the external load, and the horizontal coordinate is the variable quantity delta S of the moving gap; under the action of the axial clamping force f1 of the U-shaped bolt, the variation of the moving gap is d 1; as the axial clamping force F is increased, the displacement gap variation Δ S is increased from 0 to a maximum, while the displacement gap is decreased from a maximum to 0.
For the purpose of illustrating the variation of the U-bolt axial clamping force and tightening torque, reference is made in particular to the variation of the axial clamping force and tightening torque shown in fig. 6.
The vertical coordinate is the axial clamping force F of the U-shaped bolt, and the horizontal coordinate is the tightening torque M of the U-shaped bolt; when the axial clamping force F of the U-bolt is increased from F1 to F2, the tightening torque of the U-bolt is increased from m1 to m 2.
Because the wear pad 2 has a certain bearing limit, for example, when the axial clamping force F of the U-shaped bolt is F2, the axial clamping force F2 of the U-shaped bolt and the tightening torque m2 act together, so that the wear pad 2 reaches the bearing limit by itself; in order to avoid premature failure of the wear pad 2, the displacement play is reduced from a maximum value to 0, in which case the two side covers 3 located on the same side come into contact with one another and begin to support one another, and the side covers 3 and the base plate 1 are loaded with a surplus axial clamping force and tightening torque. Therefore, the wear pad 2 can be ensured to have good wear-resisting effect, and can not be damaged by the larger axial clamping force and the tightening torque of the U-shaped bolt to fail.
In addition, in order to accurately position the two side covers 3 positioned on the same side, an anti-skid projection 31 is arranged at the end part of the side cover 3 on one of the base plates 1; the end of the other side cover 3 on the base plate 1 is provided with a positioning groove 32 matching with the anti-skid protrusion 31, so that the two side covers 3 distributed up and down are respectively connected by the coupling of the anti-skid protrusion 31 and the positioning groove 32.
In the present embodiment, the two ends of the base plate 1 are provided with the arc-shaped baffles 12, the arc-shaped baffles 12 are bent outwards along the plate spring, and the outer surface of the plate spring is covered by the arc-shaped baffles 12, so that the plate spring is prevented from being damaged when being twisted.
In the present embodiment, the protection device of the leaf spring structure further comprises a balance support 4 for bearing the main spring and the auxiliary spring, two seat plates 5 and a U-shaped bolt 6; the two seat plates 5 are respectively contacted with the outer surfaces of the two base plates 1; the balance support 4 and the two seat plates 5 are connected in sequence through U-shaped bolts 6. The two substrates 1 are respectively attached to the upper outer surface and the lower outer surface of the auxiliary spring and clamped by the two seat plates 5, so that the auxiliary spring is preliminarily fixed; then, the upper surface and the lower surface of the main spring are jointed through the seat plate 5 and the balance support 4 below so as to finish the fixation of the main spring; the whole plate spring is assembled under the fixation of the U-shaped bolt 6.
The outer surface of the base plate 1 is also provided with a positioning bulge 11 matched with a positioning hole arranged on the seat plate 5; in the installation of bedplate 5, insert the locating hole through location arch 11, can effectively avoid the leaf spring installation back, base plate 1 produces and slides.
Example two
As shown in fig. 4, the present embodiment further provides a leaf spring structure, which includes a main spring 7 and an auxiliary spring 8, and further includes a protection device of the leaf spring structure. Through this protection device to main spring 7 and vice spring 8 fix, can effectively promote the wearability to vice spring, increased the life of whole leaf spring structure.
The main spring 7 is formed by overlapping a plurality of steel plate spring pieces; the auxiliary spring 8 is composed of glass fiber and epoxy resin, the main spring 7 is made of a traditional steel plate spring piece, the bearing strength of the main spring 7 is guaranteed, the auxiliary spring 8 is made of glass fiber and epoxy resin composite materials, the weight of the plate spring structure is greatly reduced, and the production requirement of light weight of an automobile is met.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A protection device of a plate spring structure is characterized by comprising two substrates (1) which are respectively used for being attached to two surfaces of an auxiliary spring; the inner surface of the base plate (1) is provided with a wear-resistant pad (2); side covers (3) extending and covering the side edges of the leaf spring are arranged on the two side edges of the base plate (1); a moving gap is reserved between the two side covers (3) positioned at the same side.
2. Protection device of a leaf spring structure according to claim 1, characterized in that the base plate (1) is provided with arched baffles (12) at both ends.
3. Protection device of a leaf spring structure according to claim 1, characterized in that the end of the side cover (3) on one of the base plates (1) is provided with an anti-slip projection (31); and the end part of the side cover (3) on the other base plate (1) is provided with a positioning groove (32) matched with the antiskid lug (31).
4. Protection device of the leaf spring structure according to claim 1, characterized by further comprising a balancing seat (4) for carrying the main and secondary springs, two seat plates (5) and U-bolts (6); the two seat plates (5) are respectively contacted with the outer surfaces of the two base plates (1); the balance support (4) and the two seat plates (5) are sequentially connected through U-shaped bolts (6).
5. Protection device for a leaf spring structure according to claim 4, characterized in that the outer surface of the base plate (1) is further provided with positioning projections (11) which cooperate with positioning holes provided in the seat plate (5).
6. Leaf spring structure comprising a main spring (7) and an auxiliary spring (8), characterized in that it further comprises a protection device of the leaf spring structure according to any of claims 1-5.
7. The leaf spring structure according to claim 6, characterized in that the main spring (7) is formed by a plurality of steel leaf spring strips superimposed; the auxiliary spring (8) is made of glass fiber and epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915555.4A CN112140824A (en) | 2020-09-03 | 2020-09-03 | Protection device of leaf spring structure and leaf spring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915555.4A CN112140824A (en) | 2020-09-03 | 2020-09-03 | Protection device of leaf spring structure and leaf spring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112140824A true CN112140824A (en) | 2020-12-29 |
Family
ID=73890588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010915555.4A Pending CN112140824A (en) | 2020-09-03 | 2020-09-03 | Protection device of leaf spring structure and leaf spring structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN112140824A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005916A1 (en) * | 1978-05-26 | 1979-12-12 | GKN Group Services Limited | Spring manufacture |
| CA2428792A1 (en) * | 2002-06-05 | 2003-12-05 | The Pullman Company | Anti-walkout spool bushing |
| CN104972859A (en) * | 2015-06-16 | 2015-10-14 | 吉林大学 | Automobile steel plate spring assembly with auxiliary spring made of composite material and assembly method thereof |
| CN206067408U (en) * | 2016-09-19 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of plate spring fixing structure |
| CN108608818A (en) * | 2018-04-28 | 2018-10-02 | 安徽江淮汽车集团股份有限公司 | A kind of FRP composite materials major-minor spring assembly |
| CN208442191U (en) * | 2018-05-31 | 2019-01-29 | 江西远成汽车配件有限公司 | Leaf spring |
| US20190047344A1 (en) * | 2017-08-09 | 2019-02-14 | Hyundai Motor Company | Suspension system for vehicle including composite leaf spring |
| CN209441125U (en) * | 2019-02-01 | 2019-09-27 | 王鲁斌 | A kind of truck plate spring assembly |
-
2020
- 2020-09-03 CN CN202010915555.4A patent/CN112140824A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005916A1 (en) * | 1978-05-26 | 1979-12-12 | GKN Group Services Limited | Spring manufacture |
| CA2428792A1 (en) * | 2002-06-05 | 2003-12-05 | The Pullman Company | Anti-walkout spool bushing |
| US20030227117A1 (en) * | 2002-06-05 | 2003-12-11 | Mccarthy Frank | Anti-walkout spool bushing |
| CN104972859A (en) * | 2015-06-16 | 2015-10-14 | 吉林大学 | Automobile steel plate spring assembly with auxiliary spring made of composite material and assembly method thereof |
| CN206067408U (en) * | 2016-09-19 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of plate spring fixing structure |
| US20190047344A1 (en) * | 2017-08-09 | 2019-02-14 | Hyundai Motor Company | Suspension system for vehicle including composite leaf spring |
| CN108608818A (en) * | 2018-04-28 | 2018-10-02 | 安徽江淮汽车集团股份有限公司 | A kind of FRP composite materials major-minor spring assembly |
| CN208442191U (en) * | 2018-05-31 | 2019-01-29 | 江西远成汽车配件有限公司 | Leaf spring |
| CN209441125U (en) * | 2019-02-01 | 2019-09-27 | 王鲁斌 | A kind of truck plate spring assembly |
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Application publication date: 20201229 |