阅读说明：本技术 制动底板一体式桥壳总成 (Brake bottom plate integrated axle housing assembly ) 是由 孔卓 张�林 秦厚明 李传伟 于 2020-08-14 设计创作，主要内容包括：本发明涉及一种制动底板一体式桥壳总成,包括桥壳和制动底板,所述桥壳上设置有加工外圆,加工外圆是位于桥壳两端的限位环状凸起,所述制动底板上设置有加工内孔,加工内孔位于制动底板的中心位置并且能够与加工外圆相互配合,加工内孔套入加工外圆,制动底板的两侧与桥壳通过焊接工艺连接成一体；制动底板上设置有轴承限位凸台和轴承内孔,紧靠轴承限位凸台设置有轴承,所述轴承内孔中插入凸轮轴支架,凸轮轴支架上设置有凸轮轴,凸轮轴插入轴承中间的孔；制动底板上还设置有支销孔,支销孔中插入支销；制动底板和桥壳直接焊接,节省固定法兰盘及连接螺栓等零部件,结构优化,有利于车桥降重以及节约成本。(The invention relates to a brake bottom plate integrated axle housing assembly which comprises an axle housing and a brake bottom plate, wherein a processing excircle is arranged on the axle housing and is a limiting annular bulge positioned at two ends of the axle housing; a bearing limiting boss and a bearing inner hole are arranged on the brake bottom plate, a bearing is arranged close to the bearing limiting boss, a camshaft support is inserted into the bearing inner hole, a camshaft is arranged on the camshaft support, and the camshaft is inserted into a hole in the middle of the bearing; the brake bottom plate is also provided with a support pin hole, and a support pin is inserted into the support pin hole; the brake bottom plate and the axle housing are directly welded, parts such as the fixed flange plates and the connecting bolts are saved, the structure is optimized, and the weight reduction and cost saving of the axle are facilitated.)

1. A brake bottom plate integrated axle housing assembly comprises an axle housing and a brake bottom plate and is characterized in that a processing excircle is arranged on the axle housing and is a limiting annular bulge positioned at two ends of the axle housing, a processing inner hole is arranged on the brake bottom plate, the processing inner hole is positioned at the central position of the brake bottom plate and can be matched with the processing excircle, the processing inner hole is sleeved in the processing excircle, and two sides of the brake bottom plate are connected with the axle housing into a whole through a welding process;

a sealing ring inner hole is formed in the brake bottom plate, and a sealing ring is arranged in the sealing ring inner hole; the brake bottom plate is provided with a bearing limiting boss and a bearing inner hole, the outer side of the bearing limiting boss is connected with a sealing ring inner hole, the inner side of the bearing limiting boss is provided with a bearing, a camshaft support is inserted into the bearing inner hole, the camshaft support is provided with a camshaft, and the camshaft is inserted into an inner hole in the middle of the bearing; the brake bottom plate is also provided with a support pin hole, and a support pin is inserted into the support pin hole.

2. The brake base plate integrated axle housing assembly of claim 1, wherein the brake base plate is provided with bolt holes and mounting bosses, bolts are assembled in the bolt holes, retaining pieces are assembled on the mounting bosses, the retaining pieces are arranged below the bolts, and the bolts and the retaining pieces are located at one ends of the support pins.

3. The brake spider integrated axle housing assembly of claim 1 or 2, wherein the brake spider is provided with a camshaft support limiting boss located at the periphery of the bearing bore.

4. The brake spider integrated axle housing assembly of claim 3, wherein the brake spider is provided with a cam shaft limiting boss located at a periphery of the cam shaft and cooperating with the cam shaft.

5. The brake spider integrated axle housing assembly of claim 4 wherein the axle housing is a press-welded unitary axle housing comprising an axle housing body, a reinforcement ring, an axle sleeve, an axle housing rear cover, and a steel plate spring seat, the axle housing body comprising an upper half shell and a lower half shell, the upper half shell and the lower half shell being formed from steel plate by stamping, the upper half shell and the lower half shell being welded into a hollow tube, the remaining components being welded together along a seam.

6. The brake spider one-piece axle housing assembly of claim 5, wherein the brake spider is a brake spider of weldable cast steel material.

7. The brake spider integrated axle housing assembly of claim 6, wherein both sides of the brake spider are provided with welded annular gaps.

8. The brake spider integrated axle housing assembly of claim 7 wherein the brake spider is provided with brake shoe retaining bosses located peripherally of the fulcrum pin and adapted to interact with brake shoes.

Technical Field

The invention belongs to the field of axle design, and relates to an axle housing assembly matched with a drum brake, in particular to an axle housing assembly integrally welded by a brake bottom plate and an axle housing for a heavy truck.

Background

The axle housing is used for mounting a main speed reducer, a differential mechanism, a half shaft and a wheel assembly base body, and is mainly used for supporting and protecting the main speed reducer, the differential mechanism, the half shaft and the like. The brake bottom plate is a supporting part for fixing the brake shoe assembly and the brake drum in the automobile brake, is the core of the whole automobile brake, is arranged at the fixed position of the axle and is fixed, and the brake bottom plate is provided with the brake shoe, the return spring and the positioning pin and bears the rotating torque force during the braking. The brake bottom plate is mainly installed on the flange plates of the middle and rear axle housings through bolts and is of a detachable split structure.

The current general heavy truck welding formula axle housing assembly often adopts the mode of welding the mounting flange on the axle housing, then is connected to mounting flange with the braking bottom plate through the bolt, reaches the purpose that braking bottom plate and axle housing are connected. This kind of structural style needs extra spare part mounting flange and a plurality of connecting bolt, and the structure is complicated and cause the increase of axle housing weight, is unfavorable for the light-weighted requirement of axle housing. This is a disadvantage of the prior art.

Therefore, it is desirable to provide a brake shoe unitary axle housing assembly that addresses the above-mentioned deficiencies in the prior art.

Disclosure of Invention

The invention aims to provide a brake base plate integrated axle housing assembly aiming at the defects in the prior art, and aims to achieve the purposes of structural optimization and axle housing light weight.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a brake bottom plate integral type axle housing assembly, includes axle housing and brake bottom plate, be provided with the processing excircle on the axle housing, the processing excircle is the spacing annular bulge that is located the axle housing both ends, be provided with the processing hole on the brake bottom plate, the processing hole is located brake bottom plate's central point puts and can mutually support with the processing excircle, and the processing excircle on the axle housing is emboliaed to the processing hole on the brake bottom plate, and brake bottom plate's both sides link into an organic whole through welding process with the axle housing.

A sealing ring inner hole is formed in the brake bottom plate, and a sealing ring is arranged in the sealing ring inner hole; the brake bottom plate is provided with a bearing limiting boss and a bearing inner hole, the outer side of the bearing limiting boss is connected with a sealing ring inner hole, the inner side of the bearing limiting boss is provided with a bearing, a camshaft support is inserted into the bearing inner hole, the camshaft support is provided with a camshaft, and the camshaft is inserted into an inner hole in the middle of the bearing; the brake bottom plate is also provided with a support pin hole, and a support pin is inserted into the support pin hole.

Preferably, the brake bottom plate is provided with a bolt hole and an installation boss, a bolt is assembled in the bolt hole, a baffle plate is assembled on the installation boss, the baffle plate is positioned below the bolt, and the bolt and the baffle plate are positioned at one end of the support pin; the support pin is axially limited and limited in rotation by the aid of the bolts and the blocking pieces.

Preferably, a cam shaft support limiting boss is arranged on the brake bottom plate and is positioned on the periphery of the inner hole of the bearing; the cam shaft support is limited through the cam shaft support limiting boss.

Preferably, the braking bottom plate is provided with a cam shaft limiting boss, and the cam shaft limiting boss is positioned on the periphery of the cam shaft and is matched with the cam shaft; the camshaft is axially limited through the camshaft limiting boss.

Preferably, the axle housing is a stamping and welding type integral axle housing, the stamping and welding type integral axle housing comprises an axle housing main body, a reinforcing ring, an axle housing pipe, an axle housing rear cover and a steel plate spring seat, the axle housing main body comprises an upper half shell and a lower half shell, the upper half shell and the lower half shell are formed by stamping steel plates, the upper half shell and the lower half shell are welded into a hollow tubular object, and other parts are welded together along seams; the stamping and welding type integral axle housing has the advantages of simple manufacturing process, high material utilization rate, low rejection rate, high production efficiency and low manufacturing cost, and also has enough strength and light weight.

Preferably, the brake bottom plate is made of weldable cast steel materials; the weldable cast steel material has flexible design, good weldability and processability, can meet the requirements of different projects, and can also enhance the strength of the whole structure.

Preferably, the two sides of the brake bottom plate are provided with welding annular gaps, the welding area is increased by welding the annular gaps, and the welding strength between the brake bottom plate and the axle housing is effectively enhanced.

Preferably, a brake shoe limiting boss is arranged on the brake bottom plate and is positioned at the periphery of the support pin; the brake shoe is limited by the mutual matching of the brake shoe limiting boss and the brake shoe.

The invention has the advantages that the processing inner hole of the brake bottom plate is sleeved into the processing excircle on the axle housing, the processing inner hole and the processing excircle are matched with each other to limit the brake bottom plate at the fixed position of the axle housing, two sides of the brake bottom plate and the axle housing are directly welded together by a welding process, the brake bottom plate and the axle housing are directly welded to save parts such as a fixed flange plate, a connecting bolt and the like, and the brake bottom plate is also provided with a brake shoe supporting pin and a limiting and supporting device of a cam shaft, so that the structure optimization is realized; the technical scheme provided by the invention can effectively save parts, and is favorable for reducing the weight of the axle and saving the cost while ensuring that the axle has enough supporting strength. In addition, the invention has reliable design principle, simple structure and very wide application prospect.

Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic structural view of a brake spider all-in-one axle housing assembly provided by the present invention.

The brake shoe comprises an axle housing 1, an axle housing 2, a processing excircle 3, a brake bottom plate 4, a processing inner hole 5, a bolt hole 6, an installation boss 7, a bolt 8, a baffle plate 9, a supporting pin hole 10, a supporting pin 11, a brake shoe limiting boss 12, a seal ring 13, a seal ring inner hole 14, a bearing limiting boss 15, a bearing 16, a bearing inner hole 17, a camshaft support limiting boss 18, a camshaft support 19, a camshaft 20 and a camshaft limiting boss.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.

As shown in fig. 1, the invention provides a brake base plate integrated axle housing assembly, which comprises an axle housing 1 and a brake base plate 3, wherein a processing excircle 2 is arranged on the axle housing 1, and the processing excircle 2 is a limiting annular bulge positioned at two ends of the axle housing 1; the brake bottom plate 3 is provided with a processing inner hole 4, the processing inner hole 4 is located at the central position of the brake bottom plate 3 and can be matched with the processing excircle 2, the processing inner hole 4 is sleeved into the processing excircle 2, and two sides of the brake bottom plate 3 are connected with the axle housing 1 into a whole through a welding process.

A sealing ring inner hole 13 is formed in the brake bottom plate 3, and a sealing ring 12 is arranged in the sealing ring inner hole 13; a bearing limiting boss 14 and a bearing inner hole 16 are arranged on the brake bottom plate 3, the outer side of the bearing limiting boss 14 is connected with a sealing ring inner hole 13, a bearing 15 is arranged on the inner side of the bearing limiting boss 14, a camshaft support 18 is inserted into the bearing inner hole 16, a camshaft 19 is arranged on the camshaft support 18, and the camshaft 19 is inserted into an inner hole in the middle of the bearing 15; the brake bottom plate 3 is also provided with a support pin hole 9, and a support pin 10 is inserted into the support pin hole 9.

In the embodiment, a bolt hole 5 and an installation boss 6 are arranged on the brake bottom plate 3, a bolt 7 is assembled in the bolt hole 5, a baffle plate 8 is assembled on the installation boss 6, the baffle plate 8 is positioned below the bolt 7, and the bolt 7 and the baffle plate 8 are positioned at one end of a support pin 10; the support pin 10 is axially limited and limited in rotation by arranging the bolt 7 and the baffle plate 8.

In this embodiment, a cam shaft support limiting boss 17 is arranged on the brake base plate 3, and the cam shaft support limiting boss 17 is located on the periphery of the bearing inner hole 16; the camshaft support 18 is limited by the camshaft support limiting boss 17.

In the embodiment, a cam shaft limiting boss 20 is arranged on the brake bottom plate 3, and the cam shaft limiting boss 20 is positioned on the periphery of the cam shaft 19 and is matched with the cam shaft 19; the camshaft 19 is axially limited by a camshaft limit boss 20.

In the embodiment, the axle housing 1 is a stamping and welding type integral axle housing, the stamping and welding type integral axle housing comprises an axle housing main body, a reinforcing ring, a axle housing sleeve, an axle housing rear cover and a steel plate spring seat, the axle housing main body comprises an upper half shell and a lower half shell, the upper half shell and the lower half shell are formed by stamping steel plates, the upper half shell and the lower half shell are welded into a hollow tubular object, and other parts are welded together along seams; the stamping and welding type integral axle housing has the advantages of simple manufacturing process, high material utilization rate, low rejection rate, high production efficiency and low manufacturing cost, and also has enough strength and light weight.

In this embodiment, the braking bottom plate 3 is made of weldable cast steel material; the weldable cast steel material has flexible design, good weldability and processability, can meet the requirements of different projects, and can also enhance the strength of the whole structure.

In this embodiment, the both sides of backing plate 3 all are provided with the annular breach of welding, through the annular breach increase welding area of welding, effectively strengthen the welding strength between backing plate 3 and the axle housing 1.

In this embodiment, a brake shoe limiting boss 11 is arranged on the brake base plate 3, and the brake shoe limiting boss 11 is located on the periphery of the support pin 10; the brake shoe is limited by the mutual matching of the brake shoe limiting boss 11 and the brake shoe.

The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.