CN2856576Y

CN2856576Y - Automotive plate spring

Info

Publication number: CN2856576Y
Application number: CN 200520126148
Authority: CN
Inventors: 张玉
Original assignee: China National Heavy Duty Truck Group Co Ltd
Current assignee: China National Heavy Duty Truck Group Co Ltd
Priority date: 2005-12-20
Filing date: 2005-12-20
Publication date: 2007-01-10
Anticipated expiration: 2015-12-20

Abstract

The utility model relates to a spring especially an automotive plate spring including a self-locking nut, a bolt, a pressure board and a plurality of reeds which are arranged in a diminishing mode from the top down. The automotive plate spring is characterized in that: the bottom end reed is a constant section reed and others are variable section reeds which become thin gradually from the center to the outside; a rubber sheet is positioned between the reeds; sections which are symmetrical and folded are positioned on the two sides of the variable section reed. The automotive plate spring has the advantages of a self-locating, a good effect of absorbing vibration and reducing noise and a comfortable seating.

Description

The automobile steel leaf spring

(1) technical field under

The utility model relates to a kind of spring, particularly a kind of automobile steel leaf spring.

(2) background technique

At present, the doube bridge suspension mostly is balancing suspension system greatly behind domestic truck, the passenger-carrying chassis except that adopting AIRMATIC Dual Control, and employed leaf spring is gapless uniform section automobile steel leaf spring between reed, and does not have middle damping, reducing noise rubber plate.During vehicle operating, vibration is big, noise is also big, and travelling comfort is poor.

(3) summary of the invention

The utility model provides the automobile steel that a kind of vibration-absorbing denoising is effective and energy in service is self-align leaf spring in order to remedy the deficiencies in the prior art.

The utility model is achieved by the following technical solution:

A kind of automobile steel leaf spring comprises self-locking nut, bolt, pressing plate and some reeds of arranging of reducing successively from bottom to top, and its special way is: the lowermost end reed is the uniform section reed, and other is the variable cross-section reed of attenuation gradually from inside to outside from the centre.

In order effectively to absorb the impact of impulsive load, be provided with rubber plate between described each reed to vehicle frame.

There is the flat segments of symmetrical bending at the two ends of described variable cross-section reed.

The motion of substantially horizontal is only done at the utility model two ends when guaranteeing the leaf spring compressive deformation, and the flat segments at variable cross-section reed two ends is provided with the emboss pit that coincide mutually.

Because variable cross-section reed of the present utility model attenuation gradually from inside to outside from the centre, along with spring carried mass increases, spring deflection reduces gradually, and the rigidity of leaf spring increases gradually, changes soft.

Therefore, the utility model energy in service is self-align, has that vibration-absorbing denoising is effective, the advantage of ride comfort.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the enlarged view at I shown in Figure 1 place;

Fig. 3 is the utility model A-A sectional drawing shown in Figure 1;

Fig. 4 is the utility model B-B sectional drawing shown in Figure 1;

Fig. 5 is a working state schematic representation of the present utility model.

Among the figure, 1 self-locking nut, 2 pressing plates, 3 variable cross-section reed I, 4 variable cross-section reed II, 5 variable cross-section reed III, 6 uniform section reeds, 7 rubber plates; 8 bolts.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present utility model.As shown in Figures 1 to 4, this embodiment comprises self-locking nut 1, bolt 8, pressing plate 2 and some reeds of arranging of reducing successively from bottom to top, the lowermost end reed is a uniform section reed 6, CD, the C in variable cross-section reed I3, variable cross-section reed II4, variable cross-section reed III5 cross section ₁D ₁The attenuation gradually from inside to outside of two regional cross sections; Be provided with anti-attrition, absorber rubber plate 7 between the reed of leaf spring; With variable cross-section reed I3, variable cross-section reed II4, the symmetry bending of variable cross-section reed III5 two ends, make CD, C ₁D ₁Keep certain clearance between the two regional reeds; Variable cross-section reed I3, variable cross-section reed II4, variable cross-section reed III5 two ends flat segments are provided with the emboss pit that mutually coincide, and are coated with lubricating grease in the groove, thereby the motion of substantially horizontal is only done at two ends when guaranteeing the leaf spring compressive deformation.

In Fig. 5, X, Y are equivalent to two strong points of a side supporting steel plate spring on the vehicle bridge, P is equivalent to the load that vehicle frame imposes on leaf spring, when load p changes, the amount of deflection of leaf spring also changes thereupon, and amount of deformation is by diminishing greatly gradually, and amount of deformation is not directly proportional with the load p variation, this gradually changing of not being directly proportional realized the flexible support of leaf spring; Impulsive load can be effectively relaxed in gap between anti-attrition, absorber rubber plate and the reed, realizes vibration damping, inhales the effect of making an uproar.

Claims

1. automobile steel leaf spring, comprise self-locking nut (1), bolt (8), pressing plate (2) and some reeds of arranging of reducing successively from bottom to top, it is characterized in that: the lowermost end reed is uniform section reed (6), and other is the variable cross-section reed of attenuation (3,4,5) gradually from inside to outside from the centre.

2. automobile steel leaf spring according to claim 1 is characterized in that: be provided with rubber plate (7) between described each reed.

3. automobile steel leaf spring according to claim 1 and 2 is characterized in that: there is the flat segments of symmetrical bending at the two ends of described variable cross-section reed (3,4,5).

4. automobile steel leaf spring according to claim 3 is characterized in that: the flat segments at variable cross-section reed (3,4,5) two ends is provided with the emboss pit that coincide mutually.