CN215487367U

CN215487367U - Composite plate spring for front spring of tractor

Info

Publication number: CN215487367U
Application number: CN202120359272.6U
Authority: CN
Inventors: 刘雪品; 刘旻
Original assignee: Jiangsu Compositech Co ltd
Current assignee: Jiangsu Compositech Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2022-01-11
Anticipated expiration: 2031-02-06

Abstract

The utility model relates to a composite material plate spring for a front spring of a traction vehicle, which comprises a plate spring main body, wherein a pressing plate and a supporting plate are arranged at the middle position of the plate spring main body, the pressing plate is matched with the supporting plate, and the pressing plate, the plate spring main body and the supporting plate are fixedly connected in sequence through positioning pins; the two ends of the plate spring main body are respectively provided with a rolling lug, and the rolling lugs are fixedly connected with the plate spring main body through bolts and nuts. The utility model adopts composite materials, thus overcoming the defects of short service life, heavy weight, low safety, poor comfort and the like of the common steel plate spring; by adopting the ingenious structural design and the composite plate spring produced by the advanced manufacturing process, 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 the suspension system is reduced, a certain energy-saving effect is achieved, and the safety and the stability of the vehicle suspension system are greatly improved.

Description

Composite plate spring for front spring of tractor

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a composite plate spring for a front spring of a traction vehicle.

Background

At present, the shock absorption structural forms of the automobile suspension are basically divided into a spiral spring, a common spring and an air spring. Wherein, the spiral spring is mainly applied to small vehicles such as cars and the like; the common steel plate spring is mainly applied to vehicles such as trucks, medium and light buses, engineering mechanical equipment and the like; the air spring is mainly applied to large buses and some urban buses. Compared with two structures of a common steel plate spring and an air spring, the air spring suspension has certain advantages, namely, the air spring suspension can be used instead for the current vehicle using the common steel plate spring suspension if the cost is not counted; however, the vehicle using the air spring suspension is difficult to replace by using the common steel plate spring, and the common steel plate spring has a large requirement on the structural space of the chassis of the vehicle, so that the vehicle is not suitable for all vehicles.

The common steel plate spring is used as an elastic element and is commonly used in corresponding mechanical and vehicle suspensions. The leaf spring structure is formed by superposing and combining a plurality of leaf springs made of alloy materials with the same width and different lengths. Generally, when a leaf spring is installed on an automobile suspension, the leaf spring is longitudinally assembled on a corresponding axle in a direction parallel to the front and the back of the automobile. The middle part of the plate spring is fixedly connected with the axle, and the two ends of the plate spring are connected with the vehicle chassis. The leaf spring can bear a load in a normal vertical direction when working, the larger the load is, the larger the leaf spring is deformed, and the smaller the load is, the smaller the leaf spring is deformed. The conventional leaf spring has some disadvantages: for example, 1) the use environment is limited. 2) Comfort and bearing capacity cannot be taken into account. 3) More noise is generated. 4) The service life is short. 5) Heavy weight and increased fuel consumption. 6) The security is low. 7) The product is abused in rough manufacture. 8) The steel plate spring is easy to corrode and is greatly influenced by weather and the surrounding environment. 9) The steel plate spring has plastic deformation, and the performance is attenuated after the steel plate spring is used for a period of time.

The air suspension system has the advantages that for vehicles with small chassis space (such as urban buses with low chassis) and high requirement on comfort, the air suspension system with extremely high price and complex system structure can be selected. It is composed of control computer, air suction hole, air exhaust hole, air bag damper and air distributor. Controlling the horizontal posture of the vehicle body: a stabilizing system for adjusting the body of the vehicle. The air spring is used for damping the vibration of the elastic element, and the most obvious characteristic of the air spring is the air spring of an air bag type. The working principle of the air suspension is that compressed air is formed by an air compressor and sent to a rubber air bag, and the rubber air bag elastically deforms and deforms through air compression, so that the effect similar to that of an automobile tire is achieved to achieve the buffering effect. In foreign countries, the utilization rate of the air suspension system on heavy trucks exceeds 80%, the air suspension system is adopted 100% on high-speed passenger cars and luxury city passenger cars, and part of the cars are also provided with the air suspension system. Air suspensions also have some disadvantages, such as 1) high price. 2) The requirement on the bearing weight is strict. 3) The matched parts are various in types, comprise sensors, valves, pipelines, computer data lines, air bags and the like, are complex in fault maintenance process and high in maintenance cost. 4) The service life is short. 5) The potential safety hazard is great.

Therefore, the composite plate spring for the front spring of the traction vehicle is provided, so that the problems in the prior art are solved, and the composite plate spring has important significance for popularization and application.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application aims to provide a composite leaf spring for a front spring of a tractor, which is provided with an upper metal clamping component and a lower metal clamping component in a longitudinal arrangement manner to form a group of longitudinal combined leaf spring suspension structure, so that the leaf spring components can meet the requirement of the bearing capacity of the whole tractor, the comfort level of the tractor is improved, and meanwhile, the chassis space occupied by a leaf spring suspension system is effectively reduced to be equal to the installation space of an air spring suspension, and the use effect is achieved.

In order to achieve the above object, the present application provides the following technical solutions.

A composite material plate spring for a front spring of a traction vehicle comprises a plate spring main body, wherein a pressing plate and a supporting plate are arranged in the middle of the plate spring main body, the pressing plate is matched with the supporting plate, and the pressing plate, the plate spring main body and the supporting plate are fixedly connected in sequence through positioning pins;

the two ends of the plate spring main body are respectively provided with a rolling lug, and the rolling lugs are fixedly connected with the plate spring main body through bolts and nuts.

Preferably, the plate spring main body is of a bow-shaped structure, and the plate spring main body is made of a composite material.

Preferably, the pressure plate and the supporting plate are respectively provided with a protective pad at one side far away from the main body of the plate spring.

Preferably, the protective pad adopts a multi-layer wire rubber plate.

Preferably, a through hole is formed in the rolling lug, and a bimetal bush is arranged on the inner side of the through hole and used for prolonging the service life of the plate spring.

Preferably, one end of the rolling lug is provided with a U-shaped groove, and one end of the plate spring main body is fixed in the U-shaped groove.

Preferably, the two ends of the plate spring main body are respectively provided with a wear plate, and the wear plates are fixedly connected with the plate spring main body through bolts and nuts.

Preferably, the widths of the two ends and the middle position of the plate spring main body are smaller than those of other positions, and the plate spring main body is of a central line symmetrical structure.

The beneficial technical effects obtained by the utility model are as follows:

1) the utility model adopts the ingenious structural design and the composite material plate spring produced by the advanced manufacturing process to perfectly solve the defects of the common flat plate spring and the air spring, thereby leading the user who does not use the air bag suspension system to realize the product upgrade with lower cost due to the cost and achieving the effect of using the air bag suspension; the use cost of a user who uses the air bag suspension system is greatly reduced on the premise of ensuring the original use effect;

2) on the premise of meeting the requirements of the prior art, the utility model reduces the production and manufacturing cost of the vehicle, reduces the use and maintenance cost, reduces the weight of the suspension system and achieves the effect of saving energy to a certain extent; the safety and the stability of the vehicle suspension system are greatly improved;

3) the plate spring main body is made of composite materials, so that the defects of short service life, heavy weight, low safety, poor comfort and the like of a common plate spring are overcome;

4) the utility model makes up a group of longitudinal combined plate spring suspension structure by longitudinally arranging the original long and large-occupied plate spring, one or more small plate springs and arranging the upper and lower metal clamping components in a longitudinal mode.

The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of a composite leaf spring for a front spring of a tractor in one embodiment of the present disclosure;

FIG. 2 is a top view of a composite leaf spring for a front spring of a tractor in one embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken at A of FIG. 1;

fig. 4 is a half sectional view at B in fig. 2.

In the above drawings: 100. a plate spring main body; 210. pressing a plate; 220. a support plate; 230. positioning pins; 240. a protective pad; 310. ear rolling; 320. a bimetallic bushing; 330. a nut; 340. and (4) bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

As shown in fig. 1 and 2, the composite plate spring for the front spring of the traction vehicle comprises a plate spring main body 100, wherein a pressing plate 210 and a supporting plate 220 are arranged in the middle of the plate spring main body 100, the pressing plate 210 is matched with the supporting plate 220, and the pressing plate 210, the plate spring main body 100 and the supporting plate 220 are fixedly connected in sequence through a positioning pin 230.

Further, a protrusion is arranged below the pressing plate 210, and a groove corresponding to the protrusion is arranged above the supporting plate 220, so that the pressing plate 210 and the supporting plate 220 are matched.

The two ends of the plate spring main body 100 are respectively provided with a rolling lug 310, and the rolling lug 310 is fixedly connected with the plate spring main body 100 through a bolt 340 and a nut 330.

Further, as shown in fig. 3 and 4, a through hole is formed in the tab 310, and a bimetal bush 320 is disposed inside the through hole to prolong the service life of the plate spring.

Further, one end of the rolling lug 310 is provided with a U-shaped groove, and one end of the plate spring main body 100 is fixed in the U-shaped groove.

Furthermore, each of the rolling ears 310 is fixed by 2 sets of bolts 340 and nuts 330, and 2 sets of bolts 340 and nuts 330 are arranged in parallel, so as to improve the firmness of connection with the leaf spring main body 100.

Alternatively, each of the rolling ears 310 is fixed by 4 sets of bolts 340 and nuts 330, and the 4 sets of bolts 340 and nuts 330 are uniformly distributed, so as to further improve the firmness of the connection with the plate spring main body 100.

Further, the plate spring main body 100 is of a bow-shaped structure, and the plate spring main body 100 is made of a composite material, so that the defects of short service life, heavy weight, low safety, poor comfort and the like of a common plate spring are overcome.

The press plate 210 and the supporting plate 220 are respectively provided with a protective pad 240 at one side far away from the plate spring main body 100, which is beneficial to prolonging the service life of the composite plate spring.

Further, the protective pad 240 is made of a multi-layer rubber plate, so that the service life is further prolonged.

In one embodiment, the leaf spring main body 100 is provided with wear plates at both ends thereof, and the wear plates are fixedly connected with the leaf spring main body 100 through bolts 340 and nuts 330.

Further, the bolt 340 is a hexagon socket countersunk head bolt, the bolt 340 is located at one side of the plate spring main body 100 provided with the wear-resistant plate, and the nut 330 is located at the other side of the plate spring main body 100.

The widths of the two ends and the middle position of the plate spring main body 100 are smaller than those of other positions, and the plate spring main body 100 is of a central line symmetrical structure, so that the elastic deformation force of the plate spring main body 100 is improved.

In one embodiment, the thicknesses of the two ends and the middle position of the plate spring main body 100 are greater than those of other positions, so that on one hand, the firmness of the plate spring main body 100 is improved; on the other hand, the elastic deformation force of the plate spring main body 100 is increased.

The composite leaf spring for the front spring of the tractor can be composed of a leaf spring main body, two leaf spring main bodies, three leaf spring main bodies or an infinite number of leaf spring main bodies.

It should be noted that the composite material in the present application is a material of the prior art, and the composite material is common knowledge to those skilled in the art.

The composite plate spring for the front spring of the tractor adopts the ingenious structural design and the composite plate spring produced by the advanced manufacturing process, so that the defects of a common flat plate spring and an air spring are perfectly overcome, and a user who does not use an air bag suspension system due to cost can upgrade the product at lower cost, thereby achieving the effect of using an air bag suspension; the use cost of a user who uses the air bag suspension system is greatly reduced on the premise of ensuring the original use effect; 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 greatly improved.

The composite plate spring for the front spring of the tractor has the advantages that the original occupied space is large, the long longitudinal plate spring is formed, a single plate spring or a plurality of small plate springs is used, the longitudinal mode is adopted, the upper metal clamping assembly and the lower metal clamping assembly are arranged, and the group of longitudinal combined plate spring suspension structure is formed.

The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. Variations, modifications, substitutions, integrations and parameter changes of the embodiments may be made without departing from the principle and spirit of the utility model, which may be within the spirit and principle of the utility model, by conventional substitution or may realize the same function.

Claims

1. The composite plate spring for the front spring of the traction vehicle comprises a plate spring main body (100), and is characterized in that a pressing plate (210) and a supporting plate (220) are arranged in the middle of the plate spring main body (100), the pressing plate (210) is matched with the supporting plate (220), and the pressing plate (210), the plate spring main body (100) and the supporting plate (220) are fixedly connected in sequence through positioning pins (230);

two ends of the plate spring main body (100) are respectively provided with a rolling lug (310), and the rolling lugs (310) are fixedly connected with the plate spring main body (100) through bolts (340) and nuts (330);

one end of the rolling lug (310) is provided with a U-shaped groove, and one end of the plate spring main body (100) is fixed in the U-shaped groove;

the pressure plate (210) and the supporting plate (220) are respectively provided with a protective pad (240) at one side far away from the plate spring main body (100); the protective pad (240) adopts a multi-layer wire rubber plate;

the spring eye (310) is provided with a through hole, and a bimetallic lining (320) is arranged on the inner side of the through hole and used for prolonging the service life of the plate spring.

2. The composite leaf spring for a traction vehicle front spring according to claim 1, characterized in that the leaf spring body (100) is of a bow-shaped construction, the leaf spring body (100) being of composite material.

3. The composite leaf spring for a front spring of a tractor according to claim 1, characterized in that the leaf spring main body (100) is provided with wear plates at both ends, respectively, and the wear plates are fixedly connected with the leaf spring main body (100) through bolts (340) and nuts (330).

4. The composite leaf spring for a traction vehicle front spring according to claim 1, wherein the leaf spring body (100) has a smaller width at both ends and at a middle position than at other positions, and the leaf spring body (100) has a center line symmetric structure.