CN204399305U - Operator's compartment is floating suspending apparatus entirely - Google Patents

Abstract

The utility model discloses a full-floating suspension device for a driver's cab, which relates to the technical field of automobile manufacturing. The lower support of the front suspension of the seat, the end of the stabilizer bar is connected with the flip support, a swing arm is hinged between the limit shoulder on the stabilizer bar and the flip support, and the other end of the swing arm is connected with the upper support of the front suspension. Hinged, the inner side wall of the swing arm is connected to the front suspension shock absorber erected, and the other end of the front suspension shock absorber is connected to the front suspension upper support; the front suspension upper support has a bottom plate, and the outer side wall of the cab longitudinal beam The offset side plate and the auxiliary support bracket connected with the front suspension shock absorber, the front end of the cab longitudinal beam has a limit rib. Compared with the prior art, the utility model adopts four-point full-floating suspension for heavy-duty commercial vehicles, which has a good vibration isolation effect, and the ride comfort and reliability of the cab are quite stable, and the structure is simple and compact, which is beneficial to space-saving layout space.

Description

Cab full suspension device

technical field

The utility model relates to the technical field of automobile manufacturing, in particular to a suspension device applied to a cab of a medium-sized commercial vehicle.

Background technique

During the driving process of the vehicle, the impact of the road surface is transmitted to the cab through the chassis of the car to generate vibration, which will cause discomfort and fatigue to the occupants. In order to improve the ride comfort of the vehicle and make the ride more comfortable, usually a There is a suspension device for vibration reduction in the middle, so that the cab is suspended on the frame. The existing medium-sized commercial vehicle suspension devices all adopt semi-suspension suspension. The two support points at the front of the cab are fixed connections of two sets of front suspension components using rubber vibration isolation pads, and the two support points at the rear end of the cab are The first support point adopts the floating connection of the rear suspension assembly including spring damping elements. The suspension device of this structure can achieve a certain vibration isolation effect, but the rubber pad suspension of the front support point of the cab is due to its vibration. The damping is too small and the dynamic stiffness is large, which reduces the overall vibration isolation effect of the suspension device, and the ride comfort of the vehicle is not good, which cannot meet people's requirements for ride comfort.

Utility model content

The purpose of the utility model is to provide a cab full-floating suspension device, which can solve the problems of poor vibration isolation effect and poor driving comfort in the existing semi-floating suspension devices of medium-sized commercial vehicles.

In order to solve the above problems, the technical solution adopted by the utility model is: the cab full-floating suspension device includes two sets of front suspension assemblies and rear suspension assemblies respectively connected between the vehicle frames on both sides and the longitudinal beams of the cab, The rear suspension assembly has a rear suspension shock absorber, and the two groups of front suspension components are connected through a stabilizer bar; each group of the front suspension components includes a front suspension upper support connected to the cab longitudinal beam and The front suspension lower support fixed on the outer wall of the vehicle frame, the upper end of the front suspension lower support is fixed with a flip support connected to the end of the stabilizer bar, and the stabilizer bar is provided with a limiting shoulder , a swing arm is hinged between the limiting shoulder and the flip support on the stabilizer bar, the other end of the swing arm is hinged with the front suspension upper support, the swing arm The inner side wall is connected with the vertically arranged front suspension shock absorber, and the other end of the front suspension shock absorber is connected with the front suspension upper support; the front suspension upper support has a bottom plate, a side plate and the front suspension The auxiliary support bracket connected to the suspension shock absorber, the side plate is against the outer side wall of the longitudinal beam of the cab, and the front end of the longitudinal beam of the cab has a bent limit rib, and the limit rib is placed Between the side plate and the auxiliary support bracket, the auxiliary support bracket is connected to the limit rib; the upper parts of the front suspension lower supports of the two groups of front suspension components face away from each other The direction is bent.

In the technical solution of the above-mentioned cab full-floating suspension device, a more specific technical solution may also be: the front suspension lower support has a connecting curved plate connected to the vehicle frame and a connecting curved plate arranged on the connecting curved plate. The reinforcing plate on the side is perpendicular to the connecting curved plate, and both the connecting curved plate and the reinforcing plate are provided with a plurality of through holes and convex ribs.

Further, the damping coefficient of the front suspension shock absorber is 0.8-3.5 N·s/m, and the damping force is 300-4000 N; the damping coefficient of the rear suspension shock absorber is 0.8-3.5 N·s/m , The damping force is 300-4000 N.

Further, the curved surface shapes of the front suspension lower support, the swing arm and the front suspension upper support are obtained through topology optimization.

Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

1. The front suspension of the utility model adopts components such as shock absorbers that can greatly absorb shocks and attenuate vibrations, thereby improving the cab suspension of medium-sized commercial vehicles from the original semi-floating suspension to four-point full suspension. The vibration isolation effect is good, which improves the driving vibration performance of medium-sized commercial vehicles and improves the driving comfort.

2. The swing arm is hinged with the stabilizer bar and the front suspension upper support. The front suspension shock absorber is erected between the inner wall of the swing arm and the auxiliary support bracket at the front end of the front suspension upper support. This structural design can avoid The problem of poor comfort, improve the decoupling rate, make the ride comfort and reliability of the cab quite stable, and the structure is simple and compact, which is conducive to saving space and layout space.

3. Optimize the damping curve by adjusting the damping force and damping coefficient of the front and rear suspension shock absorbers to improve driving comfort and reduce the fatigue of drivers and passengers.

4. The suspension bracket of the cab adopts topology optimization, which can reduce the self-weight under the premise of meeting the quality requirements, so as to reduce the cost.

Description of drawings

Fig. 1 is a structural schematic diagram of the cab suspension device.

detailed description

Below in conjunction with accompanying drawing embodiment the utility model is described in further detail:

The cab full-floating suspension device shown in Fig. 1 mainly includes two sets of front suspension components 3, rear suspension assembly 5 and stabilizer bar 2, and the front suspension components 3 and rear suspension assembly 5 are respectively connected to the vehicle frames 1 and 2 on both sides. The four ends between the longitudinal beams 4 of the cab form a four-point full suspension. Two groups of front suspension assemblies 3 are connected by a stabilizer bar 2, the stabilizer bar 2 in this embodiment is a cylindrical straight rod, and two limit shoulders 21 are symmetrically arranged on the stabilizer bar 2; each group of front suspension assemblies 3 all include a front suspension lower support 31, a flip support 32, a swing arm 33, a front suspension shock absorber 34 and a front suspension upper support 35, wherein the front suspension lower support 31 is fixedly installed on the outer side wall of the vehicle frame 1 , the upper part of the front suspension lower support 31 is bent outward, that is, the upper parts of the front suspension lower support 31 of the two groups of front suspension assemblies 3 are bent in a direction away from each other; the upper end of the front suspension lower support 31 is fixed with a The overturning support 32 that bar 2 ends are connected, on the stabilizer bar 2, between the limit shoulder 21 and the overturning support 32, a swing arm 33 is hinged, and the other end of the swing arm 33 is in phase with the front suspension upper support 35. Hinged, one end of the swing arm 33 connected to the stabilizer bar 2 has a protruding structure that cooperates with the front suspension lower support 31 after rotating to a corresponding position; the front suspension upper support 35 is connected with the cab longitudinal beam 4, and the front suspension upper support The seat 35 has a bottom plate, a side plate 352 and an auxiliary support bracket 351 placed on the front end of the cab longitudinal beam 4, the side plate 352 is against the outer side wall of the cab longitudinal beam 4, and the front end of the cab longitudinal beam 4 has a bending limit Rib 41, limit rib 41 is placed between side plate 352 and auxiliary support bracket 351, auxiliary support bracket 351 is connected and fixed with limit rib 41; device 34, the other end of the front suspension shock absorber 34 is connected to the auxiliary support bracket 351 of the front suspension upper bearing 35; preferably, the damping coefficient of the front suspension shock absorber 34 is 0.8 to 3.5 N·s/m, and the damping force It is 300-4000 cattle. The structure of the rear suspension assembly 5 of this embodiment has been disclosed in the application number 201210489894.6, and will not be repeated here; preferably, the damping coefficient of the rear suspension shock absorber 51 is 0.8 to 3.5 N.s/m, and the damping force It is 300-4000 cattle. It is worth mentioning that the front suspension lower support 31 has a connecting curved plate 311 connected to the vehicle frame 1 and a reinforcing plate 312 arranged on one side of the connecting curved plate 311. The reinforcing plate 312 is perpendicular to the connecting curved plate 311 and connected Both the curved plate 311 and the reinforcement plate 312 are provided with a plurality of through holes 314 and convex ribs 313; in addition, the curved shapes of the front suspension lower support 31, the swing arm 33 and the rear suspension lower support are obtained through topology optimization to reduce the dead weight. Reduce the cost.

The product of the utility model has been verified with the whole vehicle through the enhanced bad road test in Hainan. After the test, the ride comfort of the whole vehicle is very small compared with that before the test, and the ride comfort and reliability are quite stable. At the same time, it has been verified by mass production tracking tests that the ride comfort effect of the vehicle is stable, and a good ride ride improvement effect has been achieved.

Claims (4)

1. an operator's compartment floating suspending apparatus entirely, comprise and be connected to two groups of front overhang assemblies between both sides vehicle frame and operator's compartment longeron and rear overhang assembly, described rear overhang assembly has rear overhang shock absorber, it is characterized in that: described two groups of front overhang assemblies are connected by a stabilizer rod, often organize described front overhang assembly and comprise the front overhang upper bracket be connected with described operator's compartment longeron and the front overhang undersetting being fixed on described frame outside wall, the upper end of described front overhang undersetting is fixed with the turning supporting seat be connected with described stabilizer bar end, described stabilizer rod is provided with spacing shoulder, described stabilizer rod is hinged with swing arm between described spacing shoulder and described turning supporting seat, the other end and the described front overhang upper bracket of described swing arm are hinged, the madial wall of described swing arm connects the front overhang shock absorber erect and arrange, the other end of described front overhang shock absorber is connected with described front overhang upper bracket, the supplemental support support that described front overhang upper bracket has base plate, side plate and is connected with described front overhang shock absorber, the lateral wall of described side plate and described operator's compartment longeron offsets, the front end of described operator's compartment longeron has the spacing rib of bending, described spacing rib is placed between described side plate and described supplemental support support, and described supplemental support support is connected with described spacing rib, the top of the described front overhang undersetting of described two groups of front overhang assemblies is bending to the direction mutually deviated from.

2. operator's compartment according to claim 1 floating suspending apparatus entirely, it is characterized in that: described front overhang undersetting has the connection bent plate be connected with described vehicle frame and the reinforced plate being arranged at described connection bent plate one side, described reinforced plate is perpendicular to described connection bent plate, and described connection bent plate and described reinforced plate are equipped with multiple through hole and fin.

3. operator's compartment according to claim 1 and 2 floating suspending apparatus entirely, is characterized in that: the damping coefficient of described front overhang shock absorber is 0.8 ~ 3.5 Newton-second/rice, and dumping force is 300 ~ 4000 Ns; The damping coefficient of described rear overhang shock absorber is 0.8 ~ 3.5 Newton-second/rice, and dumping force is 300 ~ 4000 Ns.

4. operator's compartment according to claim 3 floating suspending apparatus entirely, is characterized in that: the curve form of described front overhang undersetting, described swing arm and described front overhang upper bracket is obtained by topological optimization.