CN2484206Y - Section-variable steel-board spring of half-trailing vehicle series - Google Patents

Abstract

The utility model relates to a variable cross-section steel plate spring in semi-trailer series consists of a plurality of variable thickness leaf springs. A flexible metal washer is padded between spring carrying block and each leaf spring, so that gaps are formed between the leaf springs in other parts due to the flexible metal washer except that the ends thereof are in contact with the upper leaf springs; the utility model keeps or increases the carrying capacity of the prior steel plate springs, further reduces the self-weight and prolongs the service life and other components.

Description

Superimposed trailer series variable-section steel sheet spring

The utility model relates to a kind of steel spring, particularly relates to the variable-section steel sheet spring that superimposed trailer is used.

Steel spring is one of major part of superimposed trailer, it is the elastic element that vehicle frame and axletree are flexibly linked together, it is transmitting the strong and moment of the institute that acts between vehicle frame and the wheel, and slow down wheel is passed to vehicle body owing to ground-surface is uneven impact load, alleviate the vibration of vehicle body, thus the service life of having improved the ride comfort and the associated components of vehicle '.

The steel spring of superimposed trailer use at present is made up of the reed more than 6, as shown in Figure 1, each reed thickness is even, fit tightly between each reed, there is not any gap, though it is in the basic function of having finished steel spring, but also exist many defectives: first, steel spring is overweight, a steel spring weight of carrying 20 tons semi-dragging truck is 280kg～360kg, this has not only increased the own wt of vehicle, has wasted material, but also has correspondingly increased the manufacturing cost and the use cost of semi-dragging truck; The second, because the leaf of spring number is many, the fatigue damage of steel spring has been quickened in constantly friction mutually in the superimposed trailer driving process between blade and the blade; The 3rd, the direct extruding of each reed of steel spring, friction have increased the dynamic stiffness of steel spring, thereby can't store effectively and discharge the impact energy that causes owing to Uneven road, make the riding comfort of vehicle and stability be subjected to tremendous influence.

The purpose of this utility model provides the variable-section steel sheet spring that a kind of superimposed trailer is used, and it is keeping or is increasing on the basis of former steel spring load-carrying capacity, reduces its deadweight, the service life of raising itself and other parts.

In order to achieve the above object, steel spring of the present utility model is made up of the reed of some thickening degree, by cushioning pad between every reed in the spring carrying block scope, make between each reed that except that the termination contacted, remainder was owing to there is the gap in pad.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the front view of general steel plate spring;

Fig. 2 is a front view of the present utility model;

Fig. 3 is the front view of the single reed in the utility model;

As shown in Figure 2, the utility model is made up of 4 reeds, by cushioning soft metal pad 2 between every reed 1 in the spring carrying block scope, make between each reed 1 except that termination 3,4 with the upper strata reed contacts, remainder is owing to there is 1～3 mm clearance in the soft metal pad, thereby reduces the direct contact area between reed significantly, subdues the direct friction between reed, control infantile failure effectively, postponed the service life of steel spring; And the thickness of monolithic reed 1 changes, as shown in Figure 3, begin to extend from midship mounting along reed 1 length direction to two ends, it during beginning equal thickness, attenuation gradually subsequently, the two ends 3,4 of each reed upwarp slightly, contact with the upper surface of assurance lower floor reed and the lower surface at both ends of upper strata reed.

By superimposed trailer series variable-section steel sheet spring more of the present utility model and common superimposed trailer series steel plate spring, under load-carrying capacity unmodified situation, the own wt of variable-section steel sheet spring of the present utility model alleviates 40%～60%, steel 40%～60% have been saved, reduced cost about 20%, extend to its service life more than 1.6 times, also obtained significantly improving the service life of miscellaneous part on the car, vehicle is exercised more steady, also greatly reduce in its space that occupies, be convenient to arrange good looking appearance.

Claims (2)

1. superimposed trailer series variable-section steel sheet spring, form by some reeds, it is characterized in that, in the spring carrying block scope, add between the every reed (1) and be lined with pad (2), between each reed (1) except that termination (3,4) with the upper strata reed contacts, remainder is owing to there is the gap in pad (2); And each reed begins to extend to two ends from midship mounting along the length of spring leaf direction, it during beginning equal thickness, attenuation gradually subsequently, the two ends of each reed (3,4) upwarp slightly, contact with the upper surface of assurance lower floor reed and the lower surface at both ends of upper strata reed.

2. a kind of superimposed trailer series variable-section steel sheet spring as claimed in claim 1 is characterized in that described pad is the soft metal pad.

Images