CN201300680Y

CN201300680Y - Balanced suspension device

Info

Publication number: CN201300680Y
Application number: CNU2008202227109U
Authority: CN
Inventors: 彭满平; 何文力; 昌彦明; 杜国军
Original assignee: SHAANXI TONLY HEAVY INDUSTRY Co Ltd
Current assignee: Shaanxi Tonly Heavy Industries Co., Ltd.
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-02
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to a balanced suspension device which is adopted on various medium-heavy type heavy vehicles, in particular to a balanced suspension device with a major-minor double flat spring structure. The balanced suspension device is characterized in that a balance axle housing (4) and the balance shaft (3) of the suspension device are connected through a bearing, the balance axle housing (4) can be rotated, a balance suspension main flat spring (1) and a balance suspension auxiliary flat spring (2) are respectively fixed on an upper slot and a lower slot of the balance axle housing (4) through U-bolts (5), upper flat spring slide plate chairs (6) and lower flat spring slide plate chairs (7) are respectively fixed on the upper surface and the lower surface of a front crossover main and a rear crossover main, two ends of the balance suspension main flat spring (1) are respectively inserted into a cavity of two upper flat spring slide plate chairs (6), and two ends of the balance suspension auxiliary flat spring (2) are respectively inserted into the cavity of two lower flat spring slide plate chairs (7). When the device is empty, the rigidity of the suspension is small, the driving comfortableness is good, the rigidity of the suspension is big when the device is fully loaded, and the bearing ability is strong, thereby satisfying different working conditions of empty loading and full loading.

Description

Equalizing-suspension device

Technical field

The utility model relates to the equalizing-suspension device that adopts on all kinds of medium and heavy load-carrying vehicles, particularly about the equalizing-suspension device of the two leaf spring structures of a kind of major-minor.

Background technology

Traditional balance suspension all is the veneer spring structure, is about to the leaf spring center fixed on a balance shaft.Two end supports is delivered to power on the ground by the tire on the vehicle bridge on former and later two vehicle bridge again.This balance suspension is can be well with the power mean allocation on former and later two wheels, thereby is used widely.But along with continuing to increase of carload lot, this traditional veneer spring balance suspension can not well solve the contradiction under the unloaded and fully loaded two kinds of service conditions of vehicle.Be under the no-load condition, the total mass ratio of vehicle is less, and it is too big that the rigidity of leaf spring seems, vehicle riding comfort is too poor; And the total mass ratio of vehicle is bigger under the full load conditions, and the rigidity of leaf spring seems too little, can not bear too big weight.

Summary of the invention

The purpose of this utility model provides equalizing-suspension device, and suspension rate was little when this device was unloaded, and driver comfort is good; The at full load suspension rate is big, and load-carrying capacity is strong.Thereby empty fully loaded two kinds of different operating situations have been satisfied.

The technical solution of the utility model is that equalizing-suspension device is characterized in that: balance shaft housing and balance shaft couple together by bearing, and balance shaft housing is rotary; Balance suspension mainboard spring and balance suspension subplate spring are to be separately fixed in two grooves up and down of balance shaft housing by saddle clamp; Last leaf spring slide plate chair and following leaf spring slide plate chair be separately fixed at the top of former and later two bridge tubes and below, on balance suspension mainboard spring two ends are inserted in two respectively in the cavity of leaf spring slide plate chairs; Balance suspension subplate spring two ends are inserted in respectively in the cavity of two following leaf spring slide plate chairs.

Characteristics of the present utility model are: change the veneer spring structure of conventional balanced suspension into two leaf spring structures, under the vehicle no-load condition, have only the mainboard spring to work; Mainboard spring and subplate spring are reinstated simultaneously under the vehicle full load conditions.So both solve the too big problem of unloaded rigidity of plate spring, solved the too little problem of rigidity of plate spring under the full load conditions again.This equalizing-suspension device, suspension rate was little when it was unloaded, and driver comfort is good; The at full load suspension rate is big, and load-carrying capacity is strong.Thereby zero load and fully loaded two kinds of different service conditions have been satisfied.

Description of drawings

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

Fig. 1 is the structure of embodiment under no-load condition and work scheme drawing;

Fig. 2 is the structure of embodiment under heavily loaded situation and work scheme drawing.

Among the figure: 1, balance suspension mainboard spring; 2, balance suspension subplate spring; 3, balance shaft; 4, balance shaft housing; 5, saddle clamp; 6, go up the leaf spring slide plate chair; 7, following leaf spring slide plate chair.

The specific embodiment

The balance suspension leaf spring of embodiment adopts mainboard spring and subplate spring to connect and compose, so that increase load-carrying capacity.Balance shaft housing 4 and balance shaft 3 link up by bearing, and balance shaft housing 4 is rotary; Balance suspension mainboard spring 1 and balance suspension subplate spring 2 are to be separately fixed in two grooves up and down of balance shaft housing 4 by saddle clamp 5; Last leaf spring slide plate chair 6 and following leaf spring slide plate chair 7 be separately fixed at the top of former and later two bridge tubes with below, two balance suspension mainboard spring 1 two ends are inserted in respectively in the cavity of leaf spring slide plate chair 6; Two balance suspension subplate spring 2 two ends are inserted in down respectively in the cavity of leaf spring slide plate chair 7.

Under no-load condition as shown in Figure 1, because vehicle is that the complete vehicle weight of zero load is low weight, have only the two ends of balance suspension mainboard spring 1 and the cambered surface of last leaf spring slide plate 6 to contact, the camber ratio of balance suspension mainboard spring 1 is higher, balance shaft 3, balance shaft housing 4 and balance suspension subplate spring 2 have been raised, balance suspension subplate spring 2 is not contacted with following leaf spring slide plate 7, and both the cambered surface of balance suspension subplate spring 2 and following leaf spring slide plate 7 was separated, and did not also just work.The rigidity of whole suspension is that its ratio of rigidity is less by the decision of the rigidity of balance suspension mainboard spring 1.

At full load as shown in Figure 2, because complete vehicle weight is heavier, by gravity, the radian of balance suspension mainboard spring 1 is depressed, reduced balance shaft 3, balance shaft housing 4 and balance suspension subplate spring 2, eliminated the gap between the contact surface of balance suspension subplate spring 2 and following leaf spring slide plate 7, balance suspension subplate spring 2 is contacted with following leaf spring slide plate 7, in this case, balance suspension mainboard spring 1 works simultaneously with balance suspension subplate spring 2.The rigidity of whole suspension is to be stacked up by the rigidity of balance suspension mainboard spring 1 with 2 two leaf springs of balance suspension subplate spring, so ratio of rigidity is bigger.

Claims

1, equalizing-suspension device is characterized in that: balance shaft housing of draft hitch (4) and balance shaft (3) couple together by bearing, and balance shaft housing (4) is rotary; Balance suspension mainboard spring (1) and balance suspension subplate spring (2) are to be separately fixed in two grooves up and down of balance shaft housing (4) by saddle clamp (5); Last leaf spring slide plate chair (6) and following leaf spring slide plate chair (7) be separately fixed at the top of former and later two bridge tubes and below, balance suspension mainboard spring (1) two ends are inserted in respectively in two cavitys of going up leaf spring slide plate chairs (6); Balance suspension subplate spring (2) two ends are inserted in respectively in the cavity of two following leaf spring slide plate chairs (7).