CN115230415A - Longitudinal composite material plate spring suspension structure - Google Patents
Longitudinal composite material plate spring suspension structure Download PDFInfo
- Publication number
- CN115230415A CN115230415A CN202210666334.7A CN202210666334A CN115230415A CN 115230415 A CN115230415 A CN 115230415A CN 202210666334 A CN202210666334 A CN 202210666334A CN 115230415 A CN115230415 A CN 115230415A
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- CN
- China
- Prior art keywords
- plate spring
- plate
- chassis
- axle
- suspension structure
- 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.)
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Classifications
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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
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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
- B60G11/04—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only arranged substantially parallel to the longitudinal axis of the vehicle
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
Abstract
The invention provides a longitudinally-arranged composite plate spring suspension structure which comprises a plate spring, wherein two ends of the plate spring are connected with a chassis through rolling lugs, the middle part of the plate spring is respectively connected with the chassis and an axle through a buffer device, and the buffer device is connected with the plate spring through a buckle plate; the plate spring is arranged along the longitudinal direction of the chassis and is a single-sheet composite plate spring with an upward opening and an arc structure; the buffer device comprises a hydraulic damper arranged at the upper end of the plate spring and used for being connected with the chassis, and a plate spring rigidity adjusting assembly arranged at the lower end of the plate spring and used for being connected with the axle, wherein the plate spring rigidity adjusting assembly comprises a base plate connected with the pinch plate and an electric cylinder connected with the axle, and the base plate is connected with the axle through the electric cylinder; the electric cylinder is driven to adjust the height of the base plate so as to achieve the effect that the plate spring is in direct proportion to the height of the vehicle; the longitudinal composite plate spring suspension structure has the advantages that the bearing capacity is provided for the whole vehicle, the buffering effect is realized, the overall structure is simplified, and the chassis space occupied by the longitudinal composite plate spring suspension structure can be effectively reduced.
Description
Technical Field
The invention mainly relates to the technical field of vehicle engineering, in particular to a longitudinally-arranged composite plate spring suspension structure.
Background
The suspension shock absorption structure of the existing cement mixer truck mainly comprises a metal plate spring and an air suspension. In the actual use process, the steel plate spring is mainly used on a front suspension of a truck, a cement mixer truck, engineering mechanical equipment and other vehicles, and an air suspension is mostly used as a rear suspension.
Leaf springs and composite leaf spring structures (collectively referred to as leaf springs) are common as a resilient element for use in corresponding mechanical and vehicular suspensions. The structure of the leaf spring is formed by superposing and combining a plurality of leaf springs made of alloy materials with the same width and different lengths. When a general person installs a leaf spring on an automobile suspension, the leaf spring is longitudinally assembled on a corresponding frame in a direction parallel to the front and the back of a vehicle. The middle part of the plate spring is fixedly connected with an axle (usually, a backing plate is used for adjusting the height of the whole vehicle, and a limiting device is used for containing the plate spring), and the two ends of the plate spring are connected with a vehicle chassis. The leaf spring is loaded in a positive vertical direction during operation. The larger the load, the larger the plate spring deformation, and the smaller the load, the smaller the plate spring deformation.
The existing leaf spring is composed of a plurality of leaf springs, friction is generated between the sheets in the movement process, cement, sand and stone and the like exist in the use environment of the cement mixer truck, the cement, sand and stone and the like enter gaps of the leaf springs and are influenced by climate and surrounding environment, and therefore the service life of the leaf springs is shortened. Meanwhile, the fuel consumption is increased due to the large weight. The bearing capacity of the leaf spring is in direct proportion to the self weight of the leaf spring, the higher the bearing capacity is, the larger the self weight is, the self weight of the leaf spring is increased, and the energy consumption is increased.
In addition, comfort and bearing capacity cannot be taken into consideration. Vehicles using leaf springs have poor comfort if the load bearing requirements are met. If certain comfort is to be achieved, the load bearing capacity will not meet the design requirements.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a longitudinally-arranged composite plate spring suspension structure, which realizes the simplification of the whole structure, the uniform stress of a plate spring and the simultaneous consideration of the comfort and the bearing capacity, and solves the problems that the service life of the plate spring is reduced, the energy consumption is large and the comfort and the bearing capacity can not be considered due to the superposition of a plurality of steel plate springs in the prior art.
In order to realize the purposes of simplifying the whole structure, ensuring uniform stress of the plate spring and simultaneously considering both comfort and bearing capacity, the invention provides the following technical scheme: the vehicle suspension device acts between a chassis and an axle vertically relative to a vehicle and comprises a plate spring, wherein two ends of the plate spring are connected with the chassis through rolling lugs, the middle part of the plate spring is respectively connected with the chassis and the axle through a buffer device, and the buffer device is connected with the plate spring through a pinch plate;
the plate spring is arranged along the longitudinal direction of the chassis and is a single-sheet composite plate spring with an upward opening and an arc structure;
the buffer device comprises a hydraulic damper arranged at the upper end of the plate spring and used for being connected with the chassis, and a plate spring rigidity adjusting assembly arranged at the lower end of the plate spring and used for being connected with the axle, wherein the plate spring rigidity adjusting assembly comprises a base plate connected with the pinch plate and an electric cylinder connected with the axle, and the base plate is connected with the axle through the electric cylinder; the electric cylinder is driven to adjust the height of the base plate so as to achieve the effect that the plate spring is in direct proportion to the height of the vehicle.
Furthermore, a pressure sensor for detecting the pressure change in the hydraulic damper cavity in real time is arranged in the hydraulic damper cavity.
Further, the system also comprises a processor connected with the pressure sensor;
the hydraulic damper is used for driving the electric cylinder to adjust the height of the base plate according to the feedback of the pressure sensor, and the curvature of the height adjusting plate spring changes, so that the pressure value in the cavity of the hydraulic damper is always in a set threshold value, and the driving comfort of a vehicle is improved.
Furthermore, the cross sections of the middle part and the two ends of the plate spring are the same, and a thickened cross section which changes according to the parabola is arranged between the end parts and the middle part.
Furthermore, above-mentioned buckle cover is established on the leaf spring, and the buckle includes the adapter of two mutual lock joints, and buckle and corresponding the top and bottom of leaf spring all are equipped with the protection pad that is used for cooperating the buckle to use.
Furthermore, the hydraulic damper and the base plate are both mounted on the pinch plate through the positioning pins, and the axes of the hydraulic damper and the axis of the base plate are arranged in a collinear mode through the positioning pins.
Furthermore, the rolling lug 9 is fixedly connected with the plate spring 1 through a hexagon bolt 10, and a through hole 11 for installing a bush is formed in the rolling lug 9.
The invention has the beneficial effects that:
firstly, aiming at solving the problems that the service life of a plate spring is reduced, the energy consumption is high and the comfort and the bearing capacity cannot be considered simultaneously due to the fact that a plurality of steel plate springs are overlapped for use, a single-plate composite plate spring with an arc-shaped structure is adopted as an elastic element to provide the bearing capacity for the whole vehicle and play a role in buffering, the overall structure is simplified, the chassis space occupied by the suspension structure of the longitudinally-arranged composite plate spring can be effectively reduced, and meanwhile, the hydraulic damper and a plate spring rigidity adjusting assembly are matched for use, so that the stress uniformity of the plate spring is improved;
furthermore, according to the load degree of the vehicle, the processor drives the electric cylinder according to the feedback of the pressure sensor so as to achieve the adaptive adjustment of the rigidity of the plate spring, so that the longitudinally-arranged composite plate spring suspension structure is in direct proportion to the height of the vehicle, the problem that the conventional independent suspension is small in load capacity is solved, and the comfort of vehicle driving is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
in the figure, the position of the upper end of the main shaft,
1. a plate spring; 2. a hydraulic damper; 3. a base plate; 4. an electric cylinder; 5. a pressure sensor; 6. buckling the plate; 7. a protective pad; 8. positioning pins; 9. 10, a lug, a hexagon bolt; 11. and a through hole.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described below with reference to the following examples. The examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
As shown in fig. 1-2, the present invention includes: the longitudinally-arranged composite material plate spring suspension structure which vertically acts between a chassis and an axle relative to a vehicle comprises a plate spring 1, a rolling lug 9, a buckle plate 6 and a buffer device;
the plate spring 1 is arranged along the longitudinal direction of the chassis and is a single-piece composite plate spring with an upward opening and an arc structure; the sections of the middle part and the two ends of the plate spring 1 are the same, and a thickened section which changes according to the parabola is arranged between the end part and the middle part, so that the bearing capacity is provided for the whole vehicle, and the buffering effect is achieved.
The both ends of leaf spring 1 all are equipped with the eye 9, and eye 9 passes through hex bolts 10 and leaf spring 1 fixed connection, offers the through-hole 11 that is used for installing the bush on the eye 9, and the bush has certain wearability, and eye 9 passes the bush through the round pin axle and is connected with the chassis.
The buckle 6 cover is established on leaf spring 1, and buckle 6 includes the adapter of two mutual lock joints, and buckle 6 all is equipped with the protection pad 7 that is used for cooperating buckle 6 to use with leaf spring 1 corresponding top and bottom, and buckle 6 plays the effect at protection leaf spring middle part.
The middle part of the plate spring 1 is respectively connected with a chassis and an axle through a buffer device, and the buffer device is connected with the plate spring 1 through a pinch plate 6; the buffer device comprises a hydraulic damper 2 and a plate spring rigidity adjusting component; the hydraulic damper 2 is arranged at the upper end of the plate spring 1 and is used for being connected with the chassis, and a pressure sensor 5 for detecting the pressure change in the cavity of the hydraulic damper 2 in real time is arranged in the cavity of the hydraulic damper 2; the hydraulic damper 2 is arranged on the pinch plate 6 through a positioning pin 8; the plate spring rigidity adjusting assembly is arranged at the lower end of the plate spring 1 and is connected with an axle, and the plate spring rigidity adjusting assembly comprises a base plate 3 and an electric cylinder 4; the backing plate 3 is arranged on the pinch plate 6 through a positioning pin 8, and the backing plate 3 is preferably made of epoxy composite material; the electric cylinder 4 is connected with the axle, and the backing plate 3 is connected with the axle through the electric cylinder 4; the electric cylinder 4 is driven to adjust the height of the tie plate 3, so that the effect that the plate spring 1 is in direct proportion to the height of the vehicle is achieved.
The hydraulic damper 2 and the backing plate 3 are arranged in a collinear manner through the positioning pin 8, so that the hydraulic damper 2 and the plate spring stiffness adjusting assembly are in the same vertical line in the stress direction; in addition, the device also comprises a processor connected with the pressure sensor 5; the hydraulic damper is used for driving the electric cylinder 4 to adjust the height of the base plate 3 according to the feedback of the pressure sensor 5, and the curvature of the plate spring 1 changes relative to the height adjustment, so that the pressure value in the cavity of the hydraulic damper 2 is always within a set threshold value, and the driving comfort of a vehicle is improved.
In view of the above, it is desirable to provide,
the plate spring overcomes the defects of short service life, heavy weight, low safety, poor comfort and the like of the plate spring; on the premise of meeting the requirements of the prior art, the production and manufacturing cost of the vehicle is reduced, the use and maintenance cost is reduced, the weight of a suspension system is reduced, and a certain energy-saving effect is achieved. The safety and the stability of the vehicle suspension system are improved.
Without increasing the cost, the performance is improved, the weight is reduced, and more choices are provided for the automobile factories and users.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (7)
1. A longitudinally-arranged composite plate spring suspension structure acts between a chassis and an axle vertically relative to a vehicle, and is characterized by comprising a plate spring (1), wherein two ends of the plate spring (1) are connected with the chassis through a rolling lug (9), the middle part of the plate spring (1) is respectively connected with the chassis and the axle through a buffer device, and the buffer device is connected with the plate spring (1) through a buckle plate (6);
the plate spring (1) is arranged along the longitudinal direction of the chassis and is a single-sheet composite plate spring with an upward opening and an arc-shaped structure;
the damping device comprises a hydraulic damper (2) arranged at the upper end of the plate spring (1) and used for being connected with a chassis, and a plate spring rigidity adjusting assembly arranged at the lower end of the plate spring (1) and used for being connected with an axle, wherein the plate spring rigidity adjusting assembly comprises a base plate (3) connected with a pinch plate (6) and an electric cylinder (4) connected with the axle, and the base plate (3) is connected with the axle through the electric cylinder (4); the electric cylinder (4) is driven to adjust the height of the base plate (3) so as to achieve the effect that the plate spring (1) is in direct proportion to the height of a vehicle.
2. The longitudinally arranged composite leaf spring suspension structure according to claim 1, wherein a pressure sensor (5) for detecting the pressure change in the hydraulic damper (2) cavity in real time is arranged in the hydraulic damper (2) cavity.
3. The tandem composite leaf spring suspension structure according to claim 2, further comprising a processor connected to the pressure sensor (5);
the hydraulic damper is used for driving an electric cylinder (4) to adjust the height of a base plate (3) according to feedback of a pressure sensor (5), and the curvature of the plate spring (1) changes relative to the height adjustment, so that the pressure value in the cavity of the hydraulic damper (2) is always within a set threshold value, and the driving comfort of a vehicle is improved.
4. The longitudinally placed composite leaf spring suspension structure according to claim 1, characterized in that the cross-section of the leaf spring (1) is the same in the middle and in both ends, between which there is a parabolic varying thickened cross-section.
5. The longitudinal composite plate spring suspension structure according to claim 1, wherein the buckle plate (6) is sleeved on the plate spring (1), the buckle plate (6) comprises two fastening fittings which are fastened with each other, and the buckle plate (6) and the plate spring (1) are provided with protective pads (7) on the upper and lower surfaces corresponding to each other for matching the buckle plate (6).
6. The longitudinally arranged composite leaf spring suspension structure according to claim 5, characterized in that the hydraulic damper (2) and the shim plate (3) are both mounted on the pinch plate (6) by means of a positioning pin (8) and the positioning pin (8) ensures that the axes of the hydraulic damper (2) and the shim plate (3) are arranged in a collinear manner.
7. The longitudinally-arranged composite plate spring suspension structure is characterized in that the rolling lug (9) is fixedly connected with the plate spring (1) through a hexagon bolt (10), and a through hole (11) for installing a bush is formed in the rolling lug (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210666334.7A CN115230415A (en) | 2022-06-14 | 2022-06-14 | Longitudinal composite material plate spring suspension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210666334.7A CN115230415A (en) | 2022-06-14 | 2022-06-14 | Longitudinal composite material plate spring suspension structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115230415A true CN115230415A (en) | 2022-10-25 |
Family
ID=83668711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210666334.7A Pending CN115230415A (en) | 2022-06-14 | 2022-06-14 | Longitudinal composite material plate spring suspension structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115230415A (en) |
-
2022
- 2022-06-14 CN CN202210666334.7A patent/CN115230415A/en active Pending
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