Automobile plate spring suitable for unmanned logistics vehicle

Abstract

The utility model discloses an automobile leaf spring suitable for an unmanned logistics vehicle, which comprises a leaf spring body, the leaf spring body comprises a first reed, a second reed and a third reed, the first reed is positioned right above the middle part of the second reed, the second reed is positioned right above the middle part of the third reed, and the third reed is positioned right above the middle part of the third reed. The middles of the first reed, the second reed and the third reed penetrate through the bottom of the center bolt and are fixedly connected with the nut to form a whole. The left end and the right end of the third reed are provided with spring eyes. Generally speaking, the utility model has the characteristics of simple structure, light weight design as a starting point, comfort in use, long service life and small installation space.

Description

Technical Field

[0001] The utility model belongs to the technical field of leaf spring manufacturing, and particularly relates to an automotive leaf spring applicable to driverless logistics vehicles. Background Art

[0002] Automotive leaf springs are the most traditional elastic components in the automotive suspension system. The automotive industry uses leaf springs for vehicle body shock absorption. The main components of automotive leaf springs are the main spring, auxiliary spring, and center bolt. The center bolt and limit clamp connect the main spring and auxiliary spring into a whole. When the automotive leaf spring is stressed, the elastic force of the automotive leaf spring itself is utilized to achieve the function of buffering pressure.

[0003] During the use of existing logistics vehicle leaf springs, due to their overly complex structure, they occupy a large space and are extremely inconvenient to install. Therefore, it is of great application significance to develop an automotive leaf spring applicable to driverless logistics vehicles, which has a simple structure, is designed from the perspective of lightweight, is comfortable to use and has a long service life, and has a small installation space. Summary of the Invention

[0004] The purpose of the utility model is to provide an automotive leaf spring applicable to driverless logistics vehicles, so as to solve the problem that existing logistics vehicle leaf springs are overly complex in structure, occupy a large space and are extremely inconvenient to install during use. Therefore, it is of great application significance to develop an automotive leaf spring applicable to driverless logistics vehicles, which has a simple structure, is designed from the perspective of lightweight, is comfortable to use and has a long service life, and has a small installation space.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] An automotive leaf spring applicable to driverless logistics vehicles, comprising a leaf spring body. The leaf spring body includes a first leaf spring, a second leaf spring, and a third leaf spring. The first leaf spring is directly above the middle of the second leaf spring, and the second leaf spring is directly above the middle of the third leaf spring. The bottoms of the first leaf spring, the second leaf spring, and the third leaf spring pass through the center bolt and are connected and fixed with nuts to form a whole. The left and right ends of the third leaf spring are provided with eyelets.

[0007] Beneficial effects: The product is a lightweight automotive leaf spring, which is composed of three steel plates with different lengths stacked on top of each other. By designing the plate material, plate length, and plate end structure, the product achieves the goals of reducing product weight, improving product mechanical properties, reducing frictional losses at the contact parts, increasing service life, and enhancing safety performance. The first leaf spring is located at the upper middle part of the second leaf spring, the second leaf spring is located at the upper middle part of the third leaf spring, and the coil ears designed at the left and right ends of the third leaf spring are fixedly connected to the vehicle body. The different lengths of the first leaf spring, the second leaf spring, and the third leaf spring can achieve the shock absorption effect and at the same time achieve the purpose of lightweight and material saving.

[0008] Further, the left and right ends of the second leaf spring are fixedly connected to the third leaf spring through a clamp.

[0009] Further, the materials of the second leaf spring, the first leaf spring, and the third leaf spring are hot-rolled carbon steel; setting the second leaf spring, the first leaf spring, and the third leaf spring as hot-rolled carbon steel has high strength, reduces the weight of the product, and the stiffness of the new product is set more reasonably and is more adaptable to the lightweight vehicle body.

[0010] Further, the cross-sectional structures of the first leaf spring, the second leaf spring, and the third leaf spring are designed according to the principle of equal stress beam, which can effectively improve the material utilization rate and reduce the product weight.

[0011] Further, the lengths of the first leaf spring, the second leaf spring, and the third leaf spring increase in sequence from top to bottom. The different lengths of the first leaf spring, the second leaf spring, and the third leaf spring can achieve the shock absorption effect and at the same time achieve the purpose of lightweight and material saving; Generally speaking: The utility model has the characteristics of simple structure, starting from lightweight design, being comfortable to use and having a long service life, and also has the advantage of small installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Reference numerals: 0, leaf spring body; 1, center bolt; 2, first leaf spring; 3, second leaf spring; 4, clamp; 5, coil ear; 6, third leaf spring. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following further describes the embodiments of the utility model with reference to the drawings.

[0015] The detailed embodiments of the utility model are as follows Figure 1As shown in the figure, the present utility model provides an automotive leaf spring applicable to an unmanned logistics vehicle, including a leaf spring body 0. The leaf spring body 0 includes a first leaf spring 2, a second leaf spring 3, and a third leaf spring 6. The first leaf spring 2 is directly above the middle of the second leaf spring 3, and the second leaf spring 3 is directly above the middle of the third leaf spring 6. The middles of the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 pass through the bottom of a center bolt 1 and are connected and fixed to a nut to form an integral body. The left and right ends of the third leaf spring 6 are provided with eyelets 5.

[0016] Through the design of the leaf spring material, the length of the leaf spring, and the structure of the leaf spring end, the purposes of reducing the product weight, improving the mechanical properties of the product, reducing the friction loss at the contact part, increasing the service life, and improving the safety performance are achieved. The first leaf spring 2 is located at the upper end of the middle of the second leaf spring 3, the second leaf spring 3 is located at the upper end of the middle of the third leaf spring 6, and the eyelets 5 designed at the left and right ends of the third leaf spring 6 are fixedly connected to the vehicle body. The lengths of the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 are different, so that the shock absorption effect can be achieved and the purpose of lightweight and material saving can be achieved at the same time.

[0017] The left and right ends of the second leaf spring 3 are fixedly connected to the third leaf spring 6 through a clamp 4. During use, the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 are fixed as an integral structure. The eyelets 5 provided at the left and right ends of the third leaf spring 6 are fixedly connected to the vehicle body, so as to fix the leaf spring body 0 on the vehicle body to play a shock absorption role.

[0018] The materials of the second leaf spring 3, the first leaf spring 2, and the third leaf spring 6 are hot-rolled carbon steel.

[0019] The cross-sectional structures of the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 are designed according to the principle of an equal stress beam.

[0020] The lengths of the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 increase in sequence from top to bottom. The different lengths of the first leaf spring 2, the second leaf spring 3, and the third leaf spring 6 can achieve the shock absorption effect and the purpose of lightweight and material saving at the same time. Generally speaking, the present utility model has the characteristics of simple structure, starting from lightweight design, being comfortable to use and having a long service life, and also has the advantage of small installation space.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An automobile leaf spring suitable for an unmanned logistics vehicle, comprising a leaf spring body (0), wherein the leaf spring body (0) comprises a first spring leaf (2), a second spring leaf (3) and a third spring leaf (6), characterized in that: The first reed (2) is located directly above the middle of the second reed (3), and the second reed (3) is located directly above the middle of the third reed (6). The middle of the first reed (2), the second reed (3) and the third reed (6) pass through the bottom of the central bolt (1) and are connected and fixed with a nut to form a whole. The left and right ends of the third reed (6) are provided with ears (5).

2. The automobile leaf spring suitable for an unmanned logistics vehicle according to claim 1, characterized in that: The left and right ends of the second spring leaf (3) are fixedly connected to the third spring leaf (6) via a clamp (4).

3. The automobile leaf spring suitable for an unmanned logistics vehicle according to claim 2, characterized in that: The second reed (3), the first reed (2), and the third reed (6) are made of hot-rolled carbon steel.

4. The automobile leaf spring suitable for an unmanned logistics vehicle according to claim 3, characterized in that: The first reed (2), the second reed (3) and the third reed (6) have cross-sectional structures designed using the iso-stress beam principle.

5. The automobile leaf spring suitable for an unmanned logistics vehicle according to claim 4, characterized in that: The lengths of the first reed (2), the second reed (3) and the third reed (6) increase sequentially from top to bottom.

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