CN205872217U - Driver's cabin four properties bag floats suspension device entirely - Google Patents

Abstract

The utility model discloses a four-airbag full-floating suspension device for a driver's cab, which mainly includes a front suspension mechanism and a rear suspension mechanism. The front suspension mechanism includes a stabilizer bar, a front reinforcement bar, and two sets of front suspension assemblies symmetrically arranged at both ends of the stabilizer bar and the front suspension reinforcement bar; the rear suspension mechanism includes a beam and two sets of rear suspension assemblies. As a result, the two sets of rear suspension assemblies are respectively located at the two ends of the crossbeam and connected with the two ends of the crossbeam respectively. The beneficial effects of the utility model are as follows: four air spring shock absorbers are used as elastic elements, which improves the ride comfort of the whole vehicle; When the mass of the cab changes, a relatively stable natural frequency can also be obtained, so that the vehicle can maintain good shock absorption performance.

Description

Cab four-airbag full-floating suspension

technical field

The utility model relates to vehicles and belongs to the technical field of machinery, in particular to a four-airbag full-floating suspension device for a driver's cab.

Background technique

The ride comfort and ride comfort of motor vehicles have always been the focus of attention. However, in the truck industry, the chassis suspension in the traditional sense can no longer meet people's requirements. In order to further improve the comfort of the vehicle, relieve the driver's driving fatigue, buffer the impact transmitted by the road surface and protect the main body of the cab, the cab and frame There is a floating connection device between them, that is, the cab suspension.

At present, more and more motor vehicles in my country have adopted full-floating cab suspensions. However, many companies still use mechanical springs as elastic components. Although mechanical springs are simple in structure and mature in technology, their vibration isolation effect is not good. ideal. For this reason, people turn their attention to air springs. Air springs are used as elastic components on the suspension of the cab. It needs to cooperate with the setting of other suspension mechanisms. At present, the structure is not mature and needs further development and research.

Contents of the invention

The purpose of the utility model is to provide a cab four-airbag full-floating suspension device with good sound insulation effect and high comfort in view of the deficiencies in the prior art.

The technical solution adopted by the utility model is: a four-airbag full-floating suspension device for the driver's cab, which mainly includes a front suspension mechanism and a rear suspension mechanism. The front suspension mechanism includes a stabilizer bar, a front reinforcement bar, and two sets of front suspension assemblies symmetrically arranged at both ends of the stabilizer bar and the front suspension reinforcement bar; the rear suspension mechanism includes a beam and two sets of Rear suspension assembly, two sets of rear suspension assemblies are respectively located at the two ends of the crossbeam and are respectively connected to the two ends of the crossbeam.

According to the above scheme, the front suspension assembly includes a front upper bracket, a front lower bracket, a front lower bracket and a front air spring shock absorber, the front upper bracket is connected with one end of the front reinforcing bar, and the front upper bracket The upper part is fixedly connected with the front end of the cab bracket, the lower part of the front upper bracket is hinged with the front lower bracket through a pin shaft and rubber bushing, the front lower bracket is connected with one end of the lateral stabilizer bar, and the lower end of the front lower bracket is connected with a pin The shaft is rotatably connected to the upper end of the front lower bracket, and the lower end of the front lower bracket is fixedly connected to the front end of the vehicle frame; a front air spring shock absorber is installed between the front upper bracket and the front lower bracket, and the front air spring shock absorber The upper end of the front air spring is connected with the front upper bracket, and the lower end of the front air spring shock absorber is connected with the front lower bracket.

According to the above scheme, the rear suspension assembly includes a rear upper bracket, a rear lower bracket, a hydraulic lock, a swing arm, a swing arm bracket and a rear air spring shock absorber, and the upper part of the rear upper bracket is in contact with the driver's cab. The rear end of the bracket is fixedly connected, the lower part of the rear upper bracket is rotationally connected with the hydraulic lock through the lock pin, the lower part of the hydraulic lock is fixedly connected with the swing arm, and the outer side of the swing arm is connected with the upper end of the rear air spring shock absorber through the pin shaft Hinged, the lower end of the rear air spring shock absorber is hinged with the rear lower bracket through a pivot pin, and the rear lower bracket is fixed at the rear end of the vehicle frame; the inner side of the swing arm is rotationally connected with the upper part of the swing arm bracket through a pin shaft, The arm bracket is mounted on the beam.

According to the above scheme, the stabilizer bar and the front reinforcing bar are connected through two sets of front height adjustment mechanisms, and the two sets of front suspension height adjustment mechanisms are installed side by side; A group of rear suspension height adjustment mechanisms are shared by three-way valves.

According to the above scheme, the structure of the front height adjustment mechanism and the rear height adjustment mechanism are the same, and the rear height adjustment mechanism includes a height valve, a connecting rod and a rocker arm, and the height valve is installed on the height valve bracket.

According to the above scheme, the hydraulic lock includes a lock block and a lock body, the lock body is connected to the oil pipe, the lock body is fixedly installed on the swing arm, and the lock body is connected with the upper end of the connecting rod through a ball joint; The lock pin fixedly connected by the upper bracket is locked on the lock shaft hole.

According to the above scheme, the axis center of the pin shaft used to connect the swing arm and the swing arm bracket coincides with the axis of the lock pin shaft; rubber bushings are provided on the pin shaft.

The beneficial effects of the utility model are:

1) Four air spring shock absorbers are used as elastic elements, which are flexibly connected with the cab and frame, which improves the ride comfort of the vehicle.

2) Three sets of height adjustment mechanisms are used to adjust the air bag pressure of the air spring shock absorber to ensure that a relatively stable natural frequency can be obtained when the quality of the cab changes, so that the vehicle maintains good shock absorption performance; the height adjustment mechanism also The problem of frequent work of the limit mechanism of the cab is eliminated.

3) The use of the wishbone and the rubber bushing with small radial stiffness can enable the vehicle to obtain better lateral stability when driving on poor roads and turning at high speeds, and will not affect the vibration of the shock absorber. Vibration damping causes excessive interference.

4) The front suspension assembly adopts the lower bracket and bracket structure, and the rear suspension assembly adopts the swing arm structure. When the airbag of the air spring shock absorber is damaged, the front lower bracket and rear suspension of the front suspension assembly The swing arm of the mounting assembly can still force the cab to be connected to the frame, avoiding damage to other connecting parts, preventing the cab from falling off completely and causing safety accidents; the front reinforcement bar also increases the rigidity of the cab.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the front suspension assembly in the utility model.

Fig. 3 is a structural schematic diagram of the rear suspension assembly in the utility model.

Fig. 4 is a partial structural schematic diagram of the rear suspension assembly.

Fig. 5 is a structural schematic diagram of the hydraulic lock in the utility model.

Among them: 1. Front suspension assembly; 1.1. Front upper bracket; 1.2. Front lower bracket; 1.3. Front lower bracket; 1.4. Front air spring shock absorber; 1.5. Front height adjustment mechanism; 2. Lateral stability Rod; 3. Front reinforcement bar; 1.4. Air spring shock absorber; 4. Rear suspension assembly; 4.1. Rear upper bracket; 4.2. Hydraulic lock; 4.21. Lock body; 4.22. Lock block; 4.3. Swing arm; 4.4, rear suspension lower bracket; 4.5, swing arm bracket; 4.6, rear air spring shock absorber; 4.7, rear height adjustment mechanism; 5, beam; 6, frame; 7, cab bracket.

detailed description

In order to better understand the utility model, the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

A kind of cab four-airbag full-floating suspension device as shown in Figure 1 mainly includes a front suspension mechanism and a rear suspension mechanism, and the front suspension mechanism and the rear suspension mechanism are connected to each other through the cab bracket and the vehicle frame respectively. Wherein, the front suspension mechanism includes a stabilizer bar 2 , a front reinforcement bar 3 and two sets of front suspension assemblies 1 symmetrically arranged at both ends of the stabilizer bar 2 and the front suspension reinforcement bar 3 . As shown in Figure 2, the front suspension assembly 1 includes the front upper bracket 1.1, the front lower bracket 1.2, the front lower bracket 1.3 and the front air spring shock absorber 1.4, the front upper bracket 1.1 and one end of the front reinforcing bar 3 Connected, the upper part of the front upper bracket 1.1 is fixedly connected with the front end of the cab bracket 7 through bolts, the lower part of the front upper bracket 1.1 is hinged with the front lower bracket 1.2 through a pin shaft and rubber bushing, and the front lower bracket 1.2 is connected with the transverse One end of stabilizer bar 2 links to each other, and the lower end of front lower bracket 2 is rotationally connected with the upper end of front lower bracket 1.3 by bearing pin, and the lower end of front lower bracket 1.3 is fixedly connected with the front end of vehicle frame 6 by bolt. Install the front air spring shock absorber 1.4 between the front upper bracket 1.1 and the front lower bracket 1.2, the upper end of the front air spring shock absorber 1.4 is rigidly connected with the front upper bracket 1.1, and the front air spring shock absorber 1.4 The lower end is rigidly connected with the front lower bracket 1.2 (compared with the hinge joint, the installation space of the front air spring shock absorber 1.4 can be saved).

The rear suspension mechanism includes a crossbeam 5 and two sets of rear suspension assemblies 4, and the two sets of rear suspension assemblies 4 are respectively located at the two ends of the crossbeam 5 and connected with the two ends of the crossbeam 5 respectively. As shown in Figure 3, the rear suspension assembly 4 includes a rear upper bracket 4.1, a rear lower bracket 4.4, a hydraulic lock 4.2, a swing arm 4.3, a swing arm bracket 4.5 and a rear air spring shock absorber 4.6. The upper part of the bracket 4.1 is fixedly connected with the rear end of the cab bracket 7 through bolts, the lower part of the rear upper bracket 4.1 is rotationally connected with the hydraulic lock 4.2 through the lock pin, and the lower part of the hydraulic lock 4.2 is fixedly connected with the swing arm 4.3 through bolts. The outer side of the swing arm 4.3 is hinged with the upper end of the rear air spring shock absorber 4.6 through the pin shaft (compared with the traditional transverse shock absorber structure, the swing arm 4.3 improves the roll stability of the cab), and the rear air spring The lower end of the shock absorber 4.6 is hinged with the rear lower bracket 4.4 through a shaft pin, and the rear lower bracket 4.4 is fixed on the rear end of the vehicle frame 6; the inner side of the swing arm 4.3 is rotationally connected with the upper part of the swing arm bracket 4.5 through a pin shaft, The swing arm bracket 4.5 is installed on the crossbeam 5; the rear air spring shock absorber 4.6 is arranged vertically.

As shown in Figure 5, the hydraulic lock 4.2 includes a lock block 4.21 and a lock body 4.22, the lock body 4.22 communicates with the oil pipe 4.23, wherein the lock body 4.22 of the hydraulic lock 4.2 is fixedly installed on the swing arm 4.3, and the lock block 4.21 of the hydraulic lock 4.2 Lock the lock pin fixedly connected with the rear suspension upper bracket 4.1 on the lock shaft hole.

The front air spring shock absorber 1.4 and the rear air spring shock absorber 4.6 are identical in structure, and all comprise air spring, shock absorber respectively, and the integrated design of air spring and shock absorber can change the air pressure in the air bag by air valve. Front height adjustment mechanism 1.5 is identical with rear height adjustment mechanism 4.7, all comprises height valve, connecting rod and rocking arm, and height valve is installed on the height valve support by bolt. The transverse stabilizer bar 2 and the front reinforcement bar 3 are connected through two sets of front height adjustment mechanisms 1.5 (the front reinforcement rod 3 is connected to the upper end of the connecting rod of the front height adjustment mechanism 1.5 through a ball joint, and the height valve bracket of the front height adjustment mechanism 1.5 is fixed by bolts On the stabilizer bar 2), two sets of front suspension height adjustment mechanisms 1.5 are installed side by side; one set of rear height adjustment mechanisms 4.7 is installed on the beam 5, and two sets of rear suspension assemblies 4 share one set of rear suspension assemblies 4 through the three-way valve. Suspension height adjustment mechanism 4.7, height valve 4.71, connecting rod 4.73 and rocker arm 4.74 of rear height adjustment mechanism 4.7 are all shown in Figure 4, height valve 4.71 of rear height adjustment mechanism 4.7 is installed on the height of rear height adjustment mechanism 4.7 by bolts On the valve bracket 4.72, the upper end of the connecting rod 4.73 of the rear height adjustment mechanism 4.7 is connected with the lock body 4.22 through a ball hinge. When the cab moves up and down, the rear air spring shock absorber 4.6 undergoes telescopic deformation, while the lock body 4.22 and the connecting rod 4.73 move up and down together, and the up and down movement of the connecting rod 4.73 drives the rocker arm 4.74 to swing up and down, and the height valve 4.71 controls the rear air spring to absorb vibration. The intake and exhaust of device 4.6, and then regulate the air pressure in the air bag spring. When the mass in the cab changes, the rear height adjustment mechanism 4.7 and the front height adjustment mechanism 1.5 can adjust the air pressure in the air spring shock absorber (including the front air spring shock absorber 1.4 and the rear air spring shock absorber 4.6). Automatically adjust the height of the cab to keep the height of the cab unchanged; when the quality difference between the left and right sides of the cab is large, the height adjustment mechanism (including the front height adjustment mechanism 1.5 and the rear height adjustment mechanism 4.7) can reduce the left and right sides of the cab. height difference.

The axis center of the pin shaft used to connect the swing arm 4.3 and the swing arm bracket 4.5 coincides with the axis of the lock pin shaft, and a rubber bush is provided on the pin shaft, and the radial stiffness of the rubber bush is 1600N/mm. The static equilibrium position of the wishbone 4.3 is in a horizontal state. When the motor vehicle is driving on an uneven road, the cab jumps up and down, and the swing arm 4.3 swings up and down with the horizontal position as the center; due to the small deformation of the rubber bushing, it has a large impact on the front suspension air spring shock absorber 1.4 There is less interference with the damping performance of the rear suspension air spring shock absorber 4.6, and the vehicle can still maintain better lateral stability when driving on poor roads and turning at high speeds.

The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (7)

1. A four-airbag full-floating suspension device for a cab, characterized in that it mainly includes a front suspension mechanism and a rear suspension mechanism, and the front suspension mechanism and the rear suspension mechanism are respectively connected to each other through the cab bracket and the vehicle frame, The front suspension mechanism includes a stabilizer bar, a front reinforcement bar, and two sets of front suspension assemblies symmetrically arranged at both ends of the stabilizer bar and the front suspension reinforcement bar; the rear suspension mechanism includes a beam and two sets of rear suspension assemblies. Assemblies, two sets of rear suspension assemblies are respectively located at the two ends of the beam and connected to the two ends of the beam respectively. 2. The four-airbag full-floating suspension device for the driver's cab according to claim 1, wherein the front suspension assembly includes a front upper bracket, a front lower bracket, a front lower bracket and a front air spring damping The front upper bracket is connected with one end of the front reinforcing rod, the upper part of the front upper bracket is fixedly connected with the front end of the cab bracket, the lower part of the front upper bracket is hinged with the front lower bracket through pin shafts and rubber bushings, and the front The lower bracket is connected with one end of the stabilizer bar, the lower end of the front lower bracket is rotationally connected with the upper end of the front lower bracket through a pin shaft, and the lower end of the front lower bracket is fixedly connected with the front end of the vehicle frame; between the front upper bracket and the front lower A front air spring shock absorber is installed between the brackets, the upper end of the front air spring shock absorber is rigidly connected with the front upper bracket, and the lower end of the front air spring shock absorber is rigidly connected with the front lower bracket. 3. The full-floating suspension device with four airbags for the driver's cab according to claim 2, wherein the rear suspension assembly includes a rear upper bracket, a rear lower bracket, a hydraulic lock, a swing arm, and a swing arm bracket and the rear air spring shock absorber, the upper part of the rear upper bracket is fixedly connected with the rear end of the cab bracket, the lower part of the rear upper bracket is rotationally connected with the hydraulic lock through the lock pin, and the lower part of the hydraulic lock is fixed with the swing arm The outer side of the swing arm is hinged to the upper end of the rear air spring shock absorber through the pin shaft, the lower end of the rear air spring shock absorber is hinged to the rear lower bracket through the pivot pin, and the rear lower bracket is fixed on the rear end of the frame; The inner side of the traverse arm is rotationally connected with the upper part of the swing arm support through a pin shaft, and the swing arm support is installed on the cross beam. 4. The four-airbag full-floating suspension device for the driver's cab according to claim 3, wherein the stabilizer bar and the front reinforcement bar are connected by two sets of front height adjustment mechanisms, and the two sets of front suspension height adjustment mechanisms are arranged side by side Installation: Install a set of rear height adjustment mechanism on the beam, and two sets of rear suspension assemblies share a set of rear suspension height adjustment mechanism through the three-way valve. 5. The four-airbag full-floating suspension device for the driver's cab as claimed in claim 4, wherein the structure of the front height adjustment mechanism and the rear height adjustment mechanism are the same, and the rear height adjustment mechanism includes a height valve, a connecting rod and a rocker. arm, the height valve is mounted on the height valve bracket. 6. The four-airbag full-floating suspension device for the cab according to claim 5, wherein the hydraulic lock includes a lock block and a lock body, the lock body communicates with the oil pipe, and the lock body is fixedly installed on the swing arm , the lock body is connected with the upper end of the connecting rod through a ball hinge; the lock block locks the lock pin fixedly connected with the rear suspension upper bracket on the lock shaft hole. 7. The full-floating suspension device with four airbags for the driver's cab according to claim 6, wherein the center of the axis of the pin shaft used to connect the swing arm and the swing arm support coincides with the axis of the lock pin shaft; There is a rubber bush on the shaft.