Air suspension structure behind a kind of full-floating light bus four gasbags
The utility model relates to the rear overhang shelf structure, air suspension structure behind particularly a kind of full-floating light bus four gasbags.
Traditional suspension system as elastic element, adopts this suspension pattern with the spring of steel or leaf spring, always need seek a meticulous balance in the middle of road-holding property and traveling comfort.If improved road-holding property, then can influence travelling comfort; If improved travelling comfort, manoeuvereability of automobile and stability can reduce again.At present, monosaccate (per car wheel) airsuspension system is at city motor bus, and long-distance bus is used on the heavy duty truck to some extent.This air suspension structure makes the distribution of weight of vehicle even inadequately, and the service life of air bag is low.At the drawback that said structure exists, the utility model has been researched and developed air suspension structure behind a kind of full-floating light bus four gasbags.
[summary of the invention]
Problem to be solved in the utility model is the defective that overcomes prior art, and air suspension structure behind a kind of full-floating light bus four gasbags is provided.
Technical solutions of the utility model are: air suspension structure behind a kind of full-floating light bus four gasbags, comprise vehicle frame, back axle, air receiver, electric air compressor and control unit thereof, and it is characterized in that:
The front end of leaf spring and the flat spring bracket of chassis side rail are hinged, and the middle part of leaf spring is fixed with clevis bolt and Connection Block and back axle central siphon, and the leaf spring caudal end is unsettled;
About air bag each two, totally four, each air bag top is connected with the air bag bearing, and the air bag bearing is fixedly linked on chassis side rail or the frame panel complex, and the air bag bottom is fixed on the leaf spring top airfoil.Air bag is installed with vertical state, so that bear vertical load;
Lateral rod is a straight-bar structure, an end connected to ground be a rubber-bushed straight hole disc pin head, be articulated on the propelling rod upper bracket that links to each other with vehicle frame with bearing pin, an end that links to each other with vehicle bridge is a horizontal ball-and-socket type joint, is fixed on the propelling rod bearing by clevis bolt and axle attachment;
Gas circuit control box, electric air compressor, air receiver, levelling valve and air bag constitute the air-channel system of this air suspension jointly by tracheae.
Because the utility model has adopted air suspension structure behind a kind of full-floating light bus four gasbags, the weight of vehicle can obtain distributing more equably, promptly improve the traveling comfort of vehicle, increased the service life of air bag again, improved the handling and stable of vehicle simultaneously.The high-power compressor of air suspension by a levelling valve on the vehicle frame and a compact carries out tolerance to be augmented, and makes vehicle automatic compensation ride-height under different roads and load condition.
[description of drawings]
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the birds-eye view of accompanying drawing 1;
Accompanying drawing 3 is the utility model pneumatic diagram.
Each sequence number is expressed as respectively among the figure:
1 vehicle frame, 2 flat spring brackets, 3 air bags,
4 back axles, 5 leaf springs, 6 shock absorbers,
7 bearing pins, 8 propelling rod bearings, 9 lateral rods,
10 right air bag bearings, 11 shock absorber bearing pins, 12 composite transverse beam assemblies,
13U shape bolt, 14 Connection Blocks, 15 left air bag bearings,
16 air receivers, 17 electric air compressors, 18 levelling valves,
19 filters, 20 check valves, 21 air-pressure gauges,
22 annunciators, 23 pressure switches.
The utility model will be further described below in conjunction with embodiment and accompanying drawing.
With reference to Fig. 1, Fig. 2, the utility model comprises vehicle frame 1, back axle 4, air receiver 16, electric air compressor 17 and control unit thereof.
The flat spring bracket 2 of the front end of leaf spring 5 and vehicle frame 1 longeron is hinged, the middle part of leaf spring 5 is fixing with back axle 4 central siphons (or rear-axle casing) with clevis bolt 13 and Connection Block 14, leaf spring 5 caudal end are unsettled, as shown in the figure, the effect of leaf spring 5 is: one, be connected as air bag 3 lower support structure spares and drive axle, transmit the vertical load that air bag 3 bears; Two,, play longitudinal rod and longitudinally guiding effect as the important connector between drive axle and the vehicle frame 1.
Carrying air bag about 3 each two, totally 4.Each air bag 3 top is connected with the air bag bearing, and the air bag bearing is fixedly linked on vehicle frame 1 longeron or the vehicle frame 1 bottom plate combined body, and air bag 3 bottoms are fixed on leaf spring 5 top airfoils.Air bag 3 is installed with vertical state, so that bear vertical load.The effect of carrying air bag 3 is exactly as air bellow, bears the gravity impulsive force of vehicle frame 1, relaxes the mutual shock and vibration between vehicle frame 1 and the vehicle bridge.The air bag bearing has 4, and each carries an air bag 3, and the air bag bearing is fixedly linked on vehicle frame 1 longeron or the vehicle frame 1 bottom plate combined body, transmits the major part of gravity to vehicle bridge as vehicle frame 1.In the utility model,,, see shown in the figure linking to each other about preceding air bag bearing employing for the fixed lateral propelling rod.In the concrete structure, (or front and back) were connected as a single entity about whether the air bag bearing needed, and decided on the concrete structure and the assembling complexity thereof of chassis side rail or frame panel composite members.The effect of air bag bearing is the upper end of fixation balloon 3, transmits the gravity and the impulsive force of vehicle frames 1 to carrying air bag 3, bears the impulsive force that air bag 3 makes progress simultaneously, to the performance of whole air suspension without any influence.
The layout of bumper 6 be about each one, the lower end of bumper 6 is articulated on the Connection Block 14 that is connected with vehicle bridge, the upper end is articulated on bumper 6 upper brackets that are connected with vehicle frame 1 longeron or vehicle frame 1 bottom plate combined body by shock absorber bearing pin 11.The spatial destribution of bumper 6 is vertical vehicle frame 1 vertical looking up, and sees it is forwards to tilt about 38 ° in vehicle frame 1 side.The effect of bumper 6 is the following shock and vibration that relax vehicle frame 1 with air bag 3, improves the ride comfort in the vehicle ' process.
Lateral rod 9 is a straight-bar structure, an end that links to each other with vehicle frame 1 be a rubber-bushed straight hole disc pin head, be articulated on the propelling rod upper bracket that links to each other with vehicle frame 1 with bearing pin 7; An end that links to each other with vehicle bridge is a horizontal ball-and-socket type joint, is fixed on the propelling rod bearing 8 by clevis bolt 13 and axle attachment.The effect of lateral connecting rod is that the lateral inertia forces with vehicle frame 1 passes to drive axle, stops laterally relatively moving between vehicle frame 1 and the drive axle.
Two of height-control valves are mechanical transmission-type.Valve body is installed on the vehicle frame 1, and the lower end of levelling valve drive link is fixed on the leaf spring 5.
Gas circuit control box, electric air compressor 17, air receiver 16, levelling valve and air bag 3 constitute the air-channel system of this air suspension jointly by tracheae, and the principle of this air-channel system is seen accompanying drawing 3.The effect of air-channel system is to guarantee to provide pressurized air to four carrying air bags 3 at any time.
As shown in drawings: the front end of leaf spring 5 and flat spring bracket 2 are by bolted connection, and the middle part of leaf spring 5 is fixing with back axle 4 with clevis bolt 13 and Connection Block 14, and leaf spring 5 caudal end are unsettled;
Air bag 3 bottoms are fixed on the leaf spring 5, and air bag 3 tops are connected in the respective anchor site of air bag bearing, and two air bag 3 tops of fwd are fixed on the composite transverse beam assembly 12, and two air bags 3 in back are separately fixed on left air bag bearing 15 and the right air bag bearing 10.