CN211117292U

CN211117292U - Leaf spring device and have its vehicle

Info

Publication number: CN211117292U
Application number: CN201921609758.XU
Authority: CN
Inventors: 田迎春; 王健健; 李璐伶
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-07-28
Anticipated expiration: 2029-09-24

Abstract

The utility model belongs to the technical field of the vehicle shock attenuation, concretely relates to leaf spring device and have its vehicle. The utility model provides a leaf spring device includes leaf spring support and leaf spring unit, leaf spring support fixed connection is in the frame, leaf spring unit both ends fixed connection in leaf spring support, wherein, leaf spring unit includes main spring and vice spring, the below of main spring with both sides between the top of vice spring are equipped with the clearance. Through using the plate spring device among this technical scheme, set up the clearance with the main spring both sides between the below and the vice spring top, can make plate spring device when the whole car is unloaded, main spring and vice spring separation to plate spring rigidity reduces, has reduced the unloaded offset frequency of plate spring, and when the whole car was fully loaded, main spring and vice spring contact even are whole, and the combined action has improved the holistic rigidity of plate spring.

Description

Leaf spring device and have its vehicle

Technical Field

The utility model belongs to the technical field of the vehicle shock attenuation, concretely relates to leaf spring device and have its vehicle.

Background

At present, most off-highway dump trucks only have two operation states: full load transport and no load return.

When full-load transportation, when emergency braking or drive, the vertical power of frame mainly bears by the round pin axle and the leaf spring that leaf spring fore-stock, leaf spring after-poppet are connected, and impact stress is great, easily takes place the fracture risk of leaf spring. When the vehicle returns to the idle state, the rigidity of the steel plate spring is high, the comfort of the whole vehicle is poor, and a driver is easy to fatigue during operation, so that the operation safety is influenced. Meanwhile, the average speed of the whole vehicle operation is reduced, and the operation efficiency is influenced.

Therefore, the stiffness curve of the classic front leaf spring suspension in the prior art is linear, and the operation requirement of large empty and full load change is difficult to meet at the same time.

Disclosure of Invention

The invention aims to at least solve the problem that a plate spring device cannot meet the operation requirement of large empty and full load change. The purpose is realized by the following technical scheme:

a first aspect of the present invention provides a leaf spring device, including:

the plate spring support is fixedly connected to the frame;

the leaf spring unit, leaf spring unit both ends fixed connection in leaf spring support, wherein, the leaf spring unit includes main spring and vice spring, the below of main spring with both sides between the top of vice spring are equipped with the clearance.

Through using the plate spring device among this technical scheme, set up the clearance with the main spring both sides between the below and the vice spring top, can make plate spring device when the whole car is unloaded, main spring and vice spring separation to plate spring rigidity reduces, has reduced the unloaded offset frequency of plate spring, and when the whole car was fully loaded, main spring and vice spring contact even are whole, and the combined action has improved the holistic rigidity of plate spring.

In addition, according to the utility model discloses a leaf spring device still can have following additional technical characterstic:

in some embodiments of the present invention, the structure of the uppermost first end of the main spring is a lifting lug type, and the structure of the uppermost second end of the main spring is a sliding plate type.

In some embodiments of the present invention, the thickness of the first end of the main spring at the top is not less than the thickness of the second end of the main spring at the top.

In some embodiments of the present invention, the two ends of the auxiliary spring are provided with spring clamps for connecting and fixing the main spring and the auxiliary spring.

In some embodiments of the present invention, the leaf length of the leaf spring unit decreases from top to bottom.

In some embodiments of the present invention, the number of the main spring is 9.

In some embodiments of the present invention, the number of the leaf springs of the auxiliary spring is 6.

The utility model also provides a vehicle, this vehicle includes the leaf spring device among the above-mentioned embodiment.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows an overall structural schematic view of a leaf spring arrangement according to an embodiment of the invention;

FIG. 2 is a schematic view of the shape structure of the plate spring device in the unloaded state of the whole vehicle;

fig. 3 is a schematic structural diagram of the appearance of the plate spring device in a full-load state of the whole vehicle.

10: a plate spring support;

20: leaf spring unit, 21: main spring, 22: auxiliary spring, 23: gap, 24: a reed clamp;

30: a vehicle frame.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows an overall structural schematic view of a leaf spring arrangement according to an embodiment of the invention. As shown in fig. 1, the utility model provides a leaf spring device and have its vehicle. The utility model provides a leaf spring device includes leaf spring support 10 and leaf spring unit 20, leaf spring support 10 fixed connection in frame 30, and leaf spring unit 20 both ends fixed connection is in leaf spring support 10, and wherein, leaf spring unit 20 includes main spring 21 and vice spring 22, and both sides between the below of main spring 21 and the top of vice spring 22 are equipped with clearance 23.

Through using the plate spring device among this technical scheme, with main spring 21 both sides between the below and vice spring 22 the top set up clearance 23, can make plate spring device when whole car is unloaded, main spring 21 and vice spring 22 separation to plate spring rigidity reduces, has reduced the unloaded offset frequency of plate spring, and when whole car was fully loaded in the same way, main spring 21 and vice spring 22 contact, even are a whole, and the combined action has improved the holistic rigidity of plate spring.

Further, in the present embodiment, the uppermost first end of the main spring 21 is formed in a shackle-type structure, which is simple and performs a guide function. The second end of the main spring 21 at the top is configured as a slide plate, which can distribute longitudinal force to the slide plate holder, and reliability is improved.

In some embodiments of the present invention, the thickness of the uppermost first end of the main spring 21 is not less than the thickness of the uppermost second end of the main spring 21, i.e., the thickness of the left end of the uppermost leaf of the main spring 21 in fig. 1 is not less than the thickness of the right end of the uppermost leaf of the main spring 21, thereby reinforcing the strength of the leaf spring device at the shackle.

Specifically, in this embodiment, the two ends of the auxiliary spring 22 are provided with the reed clamps 24 for connecting and fixing the main spring 21 and the auxiliary spring 22, and the connection structure is an integrated structure which can perform stress conversion in an empty and full load state, so as to achieve the reliability of full load of the whole vehicle and the comfort of no load of the whole vehicle.

Further, in the present embodiment, the lengths of the leaves of the leaf spring unit 20 decrease from top to bottom, and when the leaf springs deform under the action of a load, the leaf springs that decrease from top to bottom slide relatively to generate friction, and generate a certain resistance, thereby promoting the vibration attenuation of the vehicle body.

Specifically, in the present embodiment, the number of main and sub-springs is calculated by taking the empty load of the entire vehicle, the rigidity of the leaf spring, the stress, and the like into consideration, and the number of main springs 21 and sub-springs 22 is calculated to be 9 and 6.

Further, the front-rear connection dimension of the leaf spring device and the lengths of the 1 st, 2 nd, 3 th and 4 th leaf springs in the main spring 21 are the same as those of the conventional leaf spring. The existing vehicle type can be directly replaced and used, and the replacement cost of a user and the modification cost of a factory are reduced.

Further, in the present embodiment, fig. 2 is a schematic external structural view of the leaf spring device in the unloaded state of the entire vehicle, as shown in fig. 2. The process of the plate spring device under the no-load condition of the whole vehicle is as follows: when the entire vehicle is unloaded, the last leaf (9 th leaf) of the main spring 21 is ready to contact (not yet contacted) the first leaf of the auxiliary spring 22 from the root. In this process, only the main spring 21 is activated, and the sub spring 22 is deactivated. When the whole vehicle is unloaded, the suspension offset frequency is reduced by 14%, and the driving comfort of the empty vehicle is improved. And in the contact area of the main spring 21 and the auxiliary spring 22, the offset frequency change is small, and the whole vehicle is more comfortable to drive.

Further, in the present embodiment, fig. 3 is a schematic external structural view of the plate spring device in a fully loaded state of the entire vehicle, as shown in fig. 3. The process of the plate spring device under the full load of the whole vehicle is as follows: when the whole vehicle is fully loaded, the last piece (9 th piece) of the main spring 21 is completely contacted with the first piece of the auxiliary spring 22 to be connected into a whole, and the main spring 21 and the auxiliary spring 22 act simultaneously. When the load is gradually increased after the last leaf (9 th leaf) of the main spring 21 and the first leaf of the sub spring 22 are ready to contact from the root, the area where the sub spring 22 contacts is gradually increased by the curvature radius of the main spring 21 gradually increasing from the root outward. Before the auxiliary spring 22 is not involved in operation and after the auxiliary spring 22 is completely contacted, the linear characteristic is realized, and the middle section has the gradually-changed nonlinear characteristic, so that the overall rigidity of the front plate spring is improved, and the stress at the bottom and the lifting lug of the plate spring is reduced.

The utility model also provides a vehicle, leaf spring device including above.

Through using the vehicle among this technical scheme, set up the clearance with the both sides between leaf spring device's main spring below and leaf spring device's vice spring top, can make leaf spring device when the whole car is unloaded, main spring and vice spring separation to leaf spring rigidity reduces, has reduced the unloaded bias frequency of leaf spring, and when the whole car was fully loaded, main spring and vice spring contact even are whole, and the combined action has improved the holistic rigidity of leaf spring.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A leaf spring assembly, comprising:

the plate spring support is fixedly connected to the frame;

2. The leaf spring arrangement of claim 1, wherein the uppermost first end of the main spring is configured as a shackle and the uppermost second end of the main spring is configured as a slide.

3. The leaf spring device of claim 2, wherein the thickness of the uppermost first end of the main spring is not less than the thickness of the uppermost second end of the main spring.

4. The leaf spring arrangement according to claim 1, wherein the secondary spring is provided with a leaf clamp at both ends for connecting and fixing the main spring and the secondary spring.

5. The leaf spring arrangement according to claim 1, wherein the leaf length of the leaf spring unit decreases from top to bottom.

6. The leaf spring arrangement according to claim 1, characterized in that the leaf number of the main spring is 9.

7. The leaf spring arrangement according to claim 1, characterized in that the number of leaves of the secondary spring is 6.

8. Vehicle, characterized in that it has a leaf spring arrangement according to any one of claims 1-7.