Heavy truck bridge cast bridge shell structure

Abstract

The utility model discloses a kind of heavy truck bridge casting bridge shell structure, by bridge shell body, axle head, flange, upper reaction rod support, lower reaction rod support, steel plate spring seat, air pipe support seat, breather plug, rear cover is formed;The bridge shell body, axle head, flange, upper reaction rod support, lower reaction rod support, rear cover are integrally cast and form;The air pipe support seat is connected with bridge shell body;The breather plug is connected with bridge shell body;The integrally cast steel plate spring seat is connected with bridge shell body;Casting bridge shell is formed by integrated process, avoid the stress concentration problem caused by welding, stronger torsion and impact resistance;Weight can be reduced by optimizing structure design, while can maintain strength requirement, help to reduce fuel consumption.

Description

Technical Field

[0001] This utility model relates to the field of axle technology, specifically to a cast axle housing structure for heavy-duty truck axles, which is suitable for lightweight, high-quality, and highly reliable heavy-duty truck axles. Background Technology

[0002] With the development of heavy-duty truck axles, they need to meet comprehensive requirements of high quality, high reliability, lightweight, and cost-effectiveness. Traditional stamped and welded axle housings are made of multiple steel plates welded together, which leads to stress concentration problems in the welds; especially under extreme operating conditions, weld fatigue cracking is prone to occur. As emission regulations become stricter, automakers are also gradually reducing the overall vehicle weight to improve fuel economy, and the lightweighting of stamped and welded axle housings has reached saturation. Lightweighting must be achieved while maintaining the strength of the axle housing, which is difficult to achieve simultaneously. In terms of cost reduction and efficiency improvement, the increased welding and processing involved in the manufacturing of stamped and welded axle housings limits their ability to reduce production costs. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a heavy-duty truck bridge casting axle shell structure.

[0004] The technical solution provided by this utility model is: a cast axle housing structure for heavy-duty trucks, characterized in that it comprises an axle housing body, axle head, a flange, an upper reaction rod support, a lower reaction rod support, a leaf spring seat, an air pipe support seat, a vent plug, and a rear cover; the axle housing body, axle head, flange, upper reaction rod support, lower reaction rod support, and rear cover are integrally cast structures; the axle head is fixedly connected to the flange and located at both ends of the axle housing body; the upper reaction rod support and lower reaction rod support are located at the upper and lower ends of the axle housing body, respectively; and the rear cover is located at the rear end of the axle housing body; the leaf spring seat is rigidly connected to the axle housing body; the air pipe support seat is fixed to the axle housing body; and the vent plug is fixed to the axle housing body.

[0005] Furthermore, the leaf spring seat is rigidly connected to the axle housing body using high-strength bolts.

[0006] Furthermore, the tracheal support seat and the ventilation plug are respectively screwed and fixed to the bridge housing body via threaded pairs.

[0007] Furthermore, a gasket is added to the mating surface between the tracheal stent seat and the bridge housing body.

[0008] The beneficial effects of this utility model are:

[0009] 1. The cast bridge housing is manufactured using an integral molding process, which avoids the stress concentration problem caused by welding and provides stronger resistance to torsion and impact.

[0010] 2. Compared with stamped and welded axle housings, cast axle housings are lighter, reducing weight while maintaining strength requirements, thus reducing fuel consumption and improving fuel economy.

[0011] 3. In terms of manufacturing cost, compared with stamped and welded bridge housings, which require more welding and processing, casting as a single piece reduces processing steps, making it suitable for mass production and reducing unit cost;

[0012] 4. Based on materials, processes, and market demand, cast bridge shells have a stable development trend. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram showing the connection between the rear cover and the bridge housing body of this utility model.

[0015] In the diagram, 1 is the axle housing body, 2 is the shaft head, 3 is the flange, 4 is the upper reaction rod bracket, 5 is the lower reaction rod bracket, 6 is the leaf spring seat, 7 is the air pipe bracket seat, 8 is the vent plug, and 9 is the rear cover. Detailed Implementation

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0017] like Figure 1 , 2 As shown, a heavy-duty truck axle casting structure comprises an axle housing body 1, an axle head 2, a flange 3, an upper reaction rod support 4, a lower reaction rod support 5, a leaf spring seat 6, an air pipe support seat 7, a vent plug 8, and a rear cover 9. It uses a (QT series) material with strength approaching that of steel, providing better integrity and torsional resistance. The axle housing body 1, axle head 2, flange 3, upper reaction rod support 4, lower reaction rod support 5, and rear cover 9 are integrally cast. The axle head 2 is fixedly connected to the flange 3 and located at both ends of the axle housing body 1. The upper reaction rod support 4 and lower reaction rod support 5 are located at the upper and lower ends of the axle housing body 1, respectively. The cover 9 is located at the rear end of the axle housing body 1; the outer diameter of the axle head 2 is matched with the components wheel hub brake drum assembly, oil seal seat ring, and bearing lock nut; the flange 3 is matched with the brake base plate inside the brake; the upper reaction rod bracket 4 and the lower reaction rod bracket 5 are key connecting components between the axle and the frame; all cast small parts are welded without weld seams, which comprehensively improves the strength and durability of the axle; the leaf spring seat 5 is rigidly connected to the axle housing body 1 with high-strength bolts to ensure effective load transmission; the air pipe bracket seat 7 is screwed and fixed to the axle housing body 1 through a threaded pair, and a gasket is added to the mating surface to prevent loosening; the vent plug 8 is screwed and fixed to the axle housing body 1 through a threaded pair.

[0018] This utility model is a cast axle housing structure for heavy-duty trucks. The cast axle housing is manufactured through an integral molding process, which avoids the stress concentration problem caused by welding and has stronger torsional and impact resistance. By optimizing the structure to reduce weight while maintaining strength requirements, it helps to reduce fuel consumption and can reduce unit cost, making it suitable for mass production. From the perspectives of materials, processes and market demand, cast axle housings have a stable development trend.

[0019] It should be understood that any technical features not described in detail in this specification belong to the prior art. Although the embodiments of this utility model patent have been described, this utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make more forms under the guidance of this utility model without departing from the spirit and scope of protection of this utility model and the claims, and these all fall within the protection scope of this utility model.

Claims

1. A heavy-duty truck axle casting axle shell structure, characterized in that, It is composed of a bridge housing body (1), axle head (2), flange (3), upper reaction rod bracket (4), lower reaction rod bracket (5), leaf spring seat (6), air pipe bracket seat (7), vent plug (8), and rear cover (9). The axle housing body (1), axle head (2), flange (3), upper reaction rod bracket (4), lower reaction rod bracket (5), and rear cover (9) are integrally cast structures. The axle head (2) is fixedly connected to the flange (3) and located at both ends of the axle housing body (1). The upper reaction rod bracket (4) and lower reaction rod bracket (5) are located at the upper and lower ends of the axle housing body (1), respectively. The rear cover (9) is located at the rear end of the axle housing body (1). The leaf spring seat (6) is rigidly connected to the axle housing body (1). The air pipe bracket seat (7) is fixed to the axle housing body (1). The vent plug (8) is fixed to the axle housing body (1).

2. The heavy-duty truck axle casting axle shell structure according to claim 1, characterized in that, The steel plate spring seat (6) is rigidly connected to the bridge housing body (1) using high-strength bolts.

3. According to claim 1, the air pipe support seat (7) and the vent plug (8) are respectively screwed and fixed to the axle housing body (1) by threaded pairs.

4. In the heavy truck axle casting axle shell structure according to claim 1, a gasket is added to the mating surface between the air pipe support seat (7) and the axle shell body (1).

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