CN200960908Y

CN200960908Y - Rear driving axle for heavy-duty automobile

Info

Publication number: CN200960908Y
Application number: CN 200620010783
Authority: CN
Inventors: 纪爱师; 纪奕春; 黄加显; 王慧
Original assignee: Qingte Group Co Ltd
Current assignee: Qingte Group Co Ltd
Priority date: 2006-10-12
Filing date: 2006-10-12
Publication date: 2007-10-17
Anticipated expiration: 2016-10-12

Abstract

The utility model discloses a heavy-type vehicle back driving bridge in which a disc-type braking hub and a disc-type brake are adopted in the driving bridge brake apparatus on the heavy-type vehicle. The disc-type brake is a novel friction braking mode, the disc-type brake comprises a braking disc, the disc-type braking hub is connected with a tire on a first flange surface, and a braking disc is connected on a secondary flange surface. The disc-type braking hub and the braking disc are exposed in the air, thereby the heat dissipation performance is good. Due to a brake drum is cancelled, the friction factor is basically constant, thereby the problems of mechanic decline and brake performance after immersing into the water do not exist. The structure is small in size and light in mass, the weight of the entire bridge is reduced. The tire stud only bears shear stress of the felly, the intensity is relatively high, further the stud is hard to be cut. The disc-type braking hub employs liquid grease to lubricate, and the lubrication steps are simple and convenient.

Description

The heavy motor vehicle rear driving axle

Technical field

The utility model relates to Vehicular drive system, specifically a kind of rear driving axle that is applied to heavy motor vehicle.

Background technology

Improvement along with road conditions, particularly the fast development of express highway and logistics are to the variation of vehicle performance requirement, the heavy motor vehicle usage condition is to the reduction of automobile commonality, therefore, heavy motor vehicle needn't be as before, adopt complicated structure to improve crossing ability, heavy motor vehicle drive axle technology has presented the trend to the single-stage development, make the transmitting ratio of drive axle develop to little speed ratio, singl-reduction axle is the simplest a kind of in the drive axle structure, and manufacturing process is simple, and cost is lower, be the fundamental type of drive axle, on heavy motor vehicle, occupy critical role.The braking aspect of the drive axle of heavy motor vehicle adopts drum brake mechanism at present, and drum brake is traditional brake mode, and its shortcoming is as follows: 1, owing to material and structural reason, friction coefficient reduced the brake efficiency instability after the brake wheel friction was heated.2, the size of brake wheel and quality are bigger, have increased the quality of whole bridge.3, behind the brake wheel het expansion, brake wheel and friction lining gap are increased, cause brake-pedal travel excessive.4, whole brake clamp be envelope in brake wheel inside, heat dispersion is bad.5, the tire bolt of drum brake also will play the effect of fixed brake wheel on wheel hub except connecting the tire, so tire bolt will be subjected to more shearing stress, damages easily.6, the lubricated general semisolid grease that adopts of traditional wheel hub backup bearing, this lubricating method has certain defective, because grease does not have flowing power, so hub bearing can not get lubricated fully, and orthodox method is not because open filler port on wheel hub, so pull down semiaxis and whole Hub assembly and then filling lubricating oil, complex steps and expend man-hour.

The utility model content

The utility model provides a kind of heavy motor vehicle rear driving axle, is to address the above problem and deficiency, and promptly friction coefficient reduces, and heat dispersion is bad, the problem that size is big, quality is big.

For realizing above-mentioned design goal, the utility model heavy motor vehicle rear driving axle, it comprises brake equipment, described brake equipment comprises brake hub and drg, described drg adopts plate disc brake, and described plate disc brake comprises brake disc, and described brake hub is the disc type brake wheel hub, described disc type brake wheel hub connects tire on first flange face, connect brake disc on second flange face.

Open the tapered thread filler port on the described disc type brake wheel hub.

In sum, the utlity model has following advantage and beneficial effect:

Disc type brake is a kind of newer friction braking mode, and it has following advantage with respect to traditional drum brake: because whole disc type brake wheel hub and brake disc are to expose in the atmosphere, so good heat dissipation effect; Owing to cancelled brake wheel, friction coefficient is constant substantially, thus the problem that does not exist machinery decline and immersion back brake efficiency to reduce; Size is little, quality is little, has alleviated the quality of whole bridge; Tire bolt only bears the shearing stress from wheel rim, and it is high that intensity is wanted relatively, is difficult for being cut off.

The utility model adopts lubricating oil to come lubricating bearings, and lubricating oil can soak into each roller of bearing, and lubricant effect is very good.On the dosing method of lubricating oil, adopt the method for on wheel hub, opening filler port, step is simple and convenient.

The utility model has adopted the abs braking antiblock device, has increased automobile braking safety.

Description of drawings

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

Fig. 1 is the structural representation of traditional drum brake;

In Fig. 1: the 7th, the drum brake wheel hub; The 8th, brake wheel.

Fig. 2 is the utility model heavy motor vehicle rear driving axle disc type brake structural representation;

Fig. 3 is the utility model heavy motor vehicle rear driving axle disc type brake wheel hub structure scheme drawing;

Fig. 4 is the structural representation of the heavy plate disc brake of the utility model on drive axle.

In Fig. 2-4: the 1st, the disc type brake wheel hub; 1-1 connects the brake disc bolt hole; 1-2 is the tire bolt hole; 1-3 is a taper oiling spiro pluging hole, and 1-4 is first flange face; 1-5 is second flange face; The 2nd, brake disc; The 3rd, connect the brake disc bolt; The 4th, hub bearing; The 5th, tire bolt; The 6th, oil sealing; The 9th, tire.

The specific embodiment

As shown in Figure 2, heavy motor vehicle rear driving axle described in the utility model has disc type brake wheel hub 1, and brake disc 2 connects brake disc bolt 3, hub bearing 4, tire bolt 5, oil sealing 6.

As shown in Figure 3, disc type brake wheel hub 1 connects brake disc bolt hole 1-1, tire bolt hole 1-2, taper oiling spiro pluging hole 1-3, the first flange face 1-4, the second flange face 1-5.

In use, as shown in Figure 2, on second flange face, will connect brake disc bolt 3 and insert respectively among the connection brake disc bolt hole 1-1, be connected and fixed brake disc 2 again; On first flange face, tire bolt 5 is connected tire and disc type brake wheel hub, insert among the tire bolt hole 1-2.In concrete brake process, propulsive effort by heavy motor vehicle self impels brake disc 2 to slow down, brake disc 2 is by connecting the disc type brake wheel hub 1 that brake disc bolt 3 captive joints, thereby disc type brake wheel hub 1 is slowed down, and the tire bolt 5 that passes through on the disc type brake wheel hub 1 is connecting tire 9, thereby tire 9 is slowed down, reach the brake purpose.In addition, install the abs braking antiblock device additional, be designed to the Pneumatic Suspension pattern.

Claims

1, a kind of heavy motor vehicle rear driving axle, it comprises brake equipment, described brake equipment comprises brake hub and drg, it is characterized in that: described drg adopts plate disc brake, described plate disc brake comprises brake disc, described brake hub is the disc type brake wheel hub, and described disc type brake wheel hub connects tire on first flange face, connect brake disc on second flange face.

2, heavy motor vehicle rear driving axle according to claim 1 is characterized in that: open the tapered thread filler port on the described disc type brake wheel hub.