CN215950219U

CN215950219U - A rear suspension leaf spring assembly

Info

Publication number: CN215950219U
Application number: CN202122300973.5U
Authority: CN
Inventors: 陈晃; 高蕊; 赵文涛; 郭纪泰; 杨光; 孙岳; 郭鹏
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-04
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a rear suspension plate spring assembly which comprises a plate spring, a central bolt, a central nut, a rubber pad assembly, a fastening bolt and a fastening nut, wherein through holes are respectively formed in two ends of the rubber pad assembly, the rubber pad assembly is fixed on the upper surface and the lower surface of a middle plate of the plate spring through the fastening bolt and the fastening nut, and the plate spring is assembled through the central bolt and the central nut. The utility model allows relative movement between the plate spring leaves by means of the deformability of the rubber; when the load continues to increase, the plate spring and the rubber assembly base plate are allowed to slide relatively, the integral rigidity of the rear suspension is reduced, and the driving comfort of a driver is improved.

Description

Rear suspension plate spring assembly

Technical Field

The utility model relates to a rear suspension plate spring assembly, and belongs to the technical field of automobile suspensions.

Background

The plate spring is also called a steel plate spring, belongs to one of elastic elements in an automobile suspension system, and is widely applied to the field of commercial vehicles due to the advantages of high bearing capacity, low cost, mature technology and the like. Along with the improvement of living standard, the driver not only pays close attention to the bearing capacity of commercial vehicle, still pays close attention to its driving comfort more and more, and this has proposed higher requirement to commercial vehicle ride comfort. At present, a steel plate spring is adopted as a rear suspension system of an elastic element, and in order to improve driving comfort, a rubber support is additionally arranged between a plate spring and an axle so as to reduce system rigidity and attenuate vibration. However, for some vehicle types with better working conditions, such as a high-speed logistics tractor, the driving working condition vibration is smaller, and if the cost performance of the rubber support is increased, the cost performance is not high; if the rubber support is not added, the rigidity of the rear suspension system is influenced, and the driving comfort is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a rear suspension plate spring assembly aiming at the defects in the prior art.

In order to solve the technical problem, the utility model provides a rear suspension plate spring assembly which comprises a plate spring, a central bolt, a central nut, a rubber pad assembly, a fastening bolt and a fastening nut, wherein through holes are respectively formed in two ends of the rubber pad assembly, the rubber pad assembly is fixed on the upper surface and the lower surface of a middle plate of the plate spring through the fastening bolt and the fastening nut, and the plate spring is assembled through the central bolt and the central nut.

The rubber pad assembly consists of an upper padding plate, a lower padding plate and rubber, and the rubber is positioned between the upper padding plate and the lower padding plate; the bolt head of the fastening bolt can only pass through the hole on the upper backing plate and can not pass through the hole on the lower backing plate, the fastening nut can only pass through the hole on the upper backing plate and can not pass through the hole on the lower backing plate, and the fastening bolt, the fastening nut and the rubber pad assembly are fastened on the plate spring middle sheet.

The height of the rubber is set to meet the condition that a bolt head and a fastening nut of a fastening bolt do not interfere with the upper plate and the lower plate of the plate spring.

The rubber pad assembly is integrally manufactured and formed by an upper padding plate, a lower padding plate and rubber.

The rubber pad assemblies are arranged into four, and two rubber pad assemblies are in a group.

The rubber pad assembly is connected with the plate spring in a riveting mode.

And one or two through holes are respectively formed at two ends of the rubber pad assembly.

The plate spring is of a main and auxiliary spring structure, wherein a gap is designed between the main spring and the auxiliary spring.

Has the advantages that: the utility model allows relative movement between the plate spring leaves by means of the deformability of the rubber; when the load continues to increase, the plate spring and the rubber assembly base plate are allowed to slide relatively, the integral rigidity of the rear suspension is reduced, and the driving comfort of a driver is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view of a rubber mat assembly of the present invention;

FIG. 4 is a schematic view of the structure of the upper plate of the present invention;

FIG. 5 is a schematic view of the construction of the lower bolster of the present invention;

fig. 6 is a schematic structural diagram according to an embodiment of the present invention.

In the figure: 1. a plate spring; 2. a center bolt; 3. a central nut; 4. a rubber pad assembly; 5. fastening a bolt; 6. fastening a nut; 7. an upper base plate; 8. a lower base plate; 9. rubber.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-6, the present invention provides a rear suspension plate spring assembly, which comprises a plate spring 1, a central bolt 2, a central nut 3, a rubber pad assembly 4, a fastening bolt 5 and a fastening nut 6, wherein two ends of the rubber pad assembly 4 are respectively provided with a through hole, and are fixed on the upper and lower surfaces of the middle plate of the plate spring 1 through the fastening bolt 5 and the fastening nut 6, so as to facilitate assembly; the plate spring 1 is assembled by a center bolt 2 and a center nut 3.

The rubber pad assembly 4 consists of an upper pad plate 7, a lower pad plate 8 and rubber 9, and the rubber 9 is positioned between the upper pad plate 7 and the lower pad plate 8; the bolt head of the fastening bolt 5 can only pass through the hole on the upper backing plate 7 and can not pass through the hole on the lower backing plate 8, the fastening nut 6 can only pass through the hole on the upper backing plate 7 and can not pass through the hole on the lower backing plate 8, and the fastening bolt 5 and the fastening nut 6 are fastened on the middle sheet of the plate spring 1 through the rubber pad assembly 4.

The left end and the right end of the upper backing plate 7 are respectively provided with a first through hole 71 and a second through hole 72, and the left end and the right end of the lower backing plate 8 are respectively provided with a through hole 81 and a through hole 82; four through holes can be symmetrically arranged on the upper backing plate 7 and the lower backing plate 8; hole sites matched with the upper backing plate 7 and the lower backing plate 8 are arranged on the rubber 9; the upper padding plate 7, the lower padding plate 8 and the rubber 9 are matched with each other and connected with the plate spring through fasteners, and the plate spring fixing device is simple in structure and easy to achieve.

The height of the rubber 9 is set to meet the condition that the bolt head of the fastening bolt 5 and the fastening nut 6 do not interfere with the upper sheet and the lower sheet of the plate spring 1.

The rubber pad assembly 4 is integrally manufactured and formed by an upper pad 7, a lower pad 8 and rubber 9, and is easy to package and store.

The number of the rubber pad assemblies 4 is four, the number of the rubber pad assemblies is two, the two rubber pad assemblies are in one group, and two ends of the middle sheet of the plate spring 1 are respectively provided with one group.

The rubber pad assembly 4 is connected with the plate spring 1 in a riveting mode.

And one or two through holes are respectively arranged at two ends of the rubber pad assembly 4.

Examples

FIG. 6 shows: the plate spring 1 is of a main and auxiliary spring structure, a gap is designed between the main spring and the auxiliary spring, the load is small when an automobile is in no-load, the end parts of the main and auxiliary springs are not in contact due to the existence of the gap between the main and auxiliary springs, only the main spring acts, and the rigidity of the plate spring is small, so that the suspension system has low offset frequency and meets the requirement of smoothness; when the spring is fully loaded, the load is large, the deformation of the main spring is larger than the clearance, the ends of the main spring and the auxiliary spring are contacted, the main spring and the auxiliary spring act simultaneously, the rigidity of the plate spring is large, and the requirement on the bearing capacity is met.

When high-frequency low-amplitude vibration is generated in the driving process of an automobile, the plate spring pieces can easily slide by depending on the deformation capacity of rubber, the integral rigidity is reduced, and the comfort is improved; when the automobile generates large-amplitude vibration in the driving process, the relative sliding between the plate springs cannot be borne by the deformation of the rubber pad assembly, and at the moment, the plate springs and the upper cushion plate of the rubber pad assembly can slide relative to the upper piece and the lower piece of the plate spring 1.

The utility model reduces the integral rigidity and improves the comfort. Under the working conditions of good road conditions and small automobile vibration, the structure can replace a rubber support between the plate spring and the axle, so that the cost is reduced, and the comfort is improved; the upper padding plate, the lower padding plate and the rubber of the rubber pad assembly are integrally formed, so that the use reliability is ensured; the rubber pad assembly is connected with the plate spring through a bolt, so that the rubber pad assembly is convenient to disassemble; the rubber pad assembly is connected with the plate spring through riveting, and the use reliability is guaranteed.

The above-described embodiments of the utility model are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. A rear suspension leaf spring assembly, characterized in that it comprises a leaf spring (1), a center bolt (2), a center nut (3), a rubber pad assembly (4), a fastening bolt (5) and Tighten the nut (6), the rubber pad assembly (4) is arranged on both ends of the leaf spring (1); the two ends of the rubber pad assembly (4) are provided with through holes, through which the tightening bolts (5) and The fastening nut (6) is fixed on the upper and lower surfaces of the middle piece of the leaf spring (1); the middle part of the leaf spring (1) is assembled by the central bolt (2) and the central nut (3).

2. The rear suspension leaf spring assembly according to claim 1, wherein the rubber pad assembly (4) is composed of an upper pad (7), a lower pad (8) and a rubber (9) , the rubber (9) is located between the upper backing plate (7) and the lower backing plate (8); the bolt heads of the fastening bolts (5) can only pass through the holes on the upper backing plate (7), not the lower backing plate ( 8), the tightening nut (6) can only pass through the hole on the upper backing plate (7), but cannot pass through the hole on the lower backing plate (8), the tightening bolt (5) and the tightening nut (6) The rubber pad assembly (4) is fastened on the middle piece of the leaf spring (1).

3. The rear suspension leaf spring assembly according to claim 1, characterized in that: the height of the rubber (9) is set so that the bolt head of the tightening bolt (5) and the tightening nut (6) are not in contact with the plate The upper and lower pieces of the spring (1) interfere.

4. The rear suspension leaf spring assembly according to claim 1, wherein the rubber pad assembly (4) is composed of an upper backing plate (7), a lower backing plate (8) and a rubber (9) in one piece Manufacturing molding.

5 . The rear suspension leaf spring assembly according to claim 1 , wherein the number of the rubber pad assemblies ( 4 ) is four, and two are in a group. 6 .

6. The rear suspension leaf spring assembly according to claim 1, wherein the rubber pad assembly (4) is connected to the leaf spring (1) by riveting.

7. The rear suspension leaf spring assembly according to claim 1, wherein one or two through holes are respectively provided at both ends of the rubber pad assembly (4).

8. The rear suspension leaf spring assembly according to any one of claims 1-7, wherein the leaf spring (1) has a main and auxiliary spring structure, wherein a gap is designed between the main spring and the auxiliary spring .