Supporting plate and axle housing assembly made of supporting plate
By designing an integrated L-shaped pallet and welding it on the lower bottom and left and right sides of the axle shell assembly, the new requirements for axle layout in the development of commercial vehicle Duoliao Racing are solved, space optimization and welding reliability are achieved, and weight and cost are reduced.
Patent Information
- Application Number
- CN202411916122.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-04-04
AI Technical Summary
With the development of commercial vehicles running more and more quickly, it is necessary to reduce the quality of the vehicle curb and improve the freight/passenger transportation space, which has put forward new requirements for the axle layout, especially the reduction in the demand for welding the pallets on the axle shell assembly, so as to give the suspension power space and improve the use of the interior space.
An integrated L-shaped pallet is designed, including a vertical plate and a bottom plate. The inner side of the vertical plate and the upper surface of the bottom plate are machine-added surfaces, which are fitted with the side of the bridge shell body. U-shaped grooves are provided along the upper edge of the vertical plate and the edges on the left and right sides of the vertical plate for assembly of U-shaped bolts. The pallet is cast or forged by welding cast steel and is welded on the lower bottom surface and left and right sides of the bridge shell assembly.
The space optimization of the bridge shell assembly is achieved, the space problem is solved, the good fit with the bridge shell body is ensured and the reliability after welding is high, and problems such as open welding and tearing are avoided. At the same time, the weight is lighter and the cost is lower.
Smart Images
Figure CN119749108A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automobile parts, and particularly relates to a support plate and a bridge housing assembly made of the support plate. Background Art
[0002] The drive axle is one of the core components of the car, connected to the car body through the suspension. The drive axle is generally composed of the axle housing assembly, the main reducer (including the differential), the half shaft, the brake, etc., and has the functions of bearing, transmitting torque, and braking. The axle housing assembly can be divided into two types in terms of structure: integral type and segmented type. Currently, most commercial vehicles use an integral structure; the axle housing assembly can be divided into two types in terms of process: stamping and welding type and casting type. The stamping and welding type axle housing assembly has been widely used due to its light weight and wide adaptability.
[0003] The current commercial vehicle suspension is generally connected to the axle housing assembly through U-bolts. On both sides of the axle housing assembly, upper and lower support plates are welded to fix the U-bolts. The upper and lower support plates have slots on both sides, which are clamped on the front and rear sides of the axle housing and welded to the axle housing body. Summary of the invention
[0004] The technical problem to be solved by the present invention is as follows: With the development of commercial vehicles that carry more and run faster, reducing the vehicle's curb weight and increasing the vehicle's freight / passenger space also poses a challenge to the layout of the axle. There is a demand that the upper support plate is not allowed to be welded to the bridge housing assembly. This position needs to be left to the suspension operation space and ultimately improve the use of the space inside the vehicle.
[0005] The technical solution of the present invention is specifically as follows: A support plate is an integrally formed L-shape, comprising a vertical plate and a bottom plate. The inner side surface of the vertical plate and the upper surface of the bottom plate are machined surfaces for fitting with the side surface of the bridge housing body. U-shaped grooves B are provided along the upper edge and the left and right edges of the vertical plate for assembling U-shaped bolts between the suspension and the bridge housing assembly.
[0006] The center area of the vertical plate is provided with a weight-reducing hole.
[0007] A transverse groove A is provided on the inner side of the vertical plate.
[0008] A transverse groove B is provided at the connection between the inner side surface of the vertical plate and the upper surface of the bottom plate.
[0009] The lower surface of the base plate is a machined surface.
[0010] The outer side surface of the bottom plate is a machined surface, comprising a vertical outer side surface upper portion and an outer side surface lower portion inclined inwardly.
[0011] The bottom plate is provided with positioning pin holes.
[0012] There are two weight-reducing slots on the bottom plate.
[0013] The support plate is cast or forged from weldable cast steel.
[0014] A bridge housing assembly, wherein the above four identical support plates are welded to the bridge housing body, and the support plates are symmetrically welded at corresponding positions on the left, right, front and rear of the bridge housing body, wherein the inner side surfaces of the vertical plates are welded to the left and right side surfaces of the bridge housing body, and the upper surface of the bottom plate is welded to the lower bottom surface of the bridge housing body.
[0015] Compared with the prior art, the technical effect of the present invention is that the present invention is L-shaped, welded to the lower bottom surface and left and right sides of the bridge housing assembly, no longer relying on the upper surface of the bridge housing assembly, and meeting the needs of vehicle development. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-view schematic diagram of the present invention.
[0017] Figure 2 It is a three-dimensional schematic diagram of the present invention.
[0018] Figure 3 It is a schematic diagram of the bridge housing assembly. DETAILED DESCRIPTION
[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.
[0020] like Figure 1-2 A support plate is an integrally formed L-shaped support plate, comprising a vertical plate 10 and a bottom plate 20. The inner side surface 14 of the vertical plate 10 and the upper surface 21 of the bottom plate 20 are machined surfaces for fitting with the side surface of the bridge housing body.
[0021] U-shaped grooves B13 are provided along the upper edge 12 and the left and right edges of the vertical plate 10 for assembling U-shaped bolts between the suspension and the bridge housing assembly. The upper side ensures a good fit with the U-shaped bolts, and the side allows slight adjustment.
[0022] The central area of the vertical plate 10 is provided with an elliptical weight-reducing hole 11, which is also used for plug welding on the bridge housing body, and is welded to the bridge housing body along the upper edge 12 and the left and right sides of the vertical plate 10.
[0023] In order to ensure good fit with the axle housing body, the inner side surface 14 of the vertical plate 10 is provided with a transverse groove A15 to avoid the longitudinal weld of the axle housing body and significantly reduce the stress there.
[0024] A transverse groove B16 is provided at the connection between the inner side surface 14 of the vertical plate 10 and the upper surface 21 of the bottom plate 20, which mainly serves as a machined back-cut groove between the inner side surface 14 of the vertical plate 10 and the upper surface 21 of the bottom plate 20, while avoiding interference with the arc of the bridge housing and greatly reducing the stress at this location.
[0025] The lower surface 22 of the bottom plate 20 is a machined surface for assembling the suspension components and ensuring a good fit.
[0026] The outer side surface of the bottom plate 20 (the side surface farthest from the vertical plate 10) is a machined surface, including a vertical outer side surface upper portion 22 and an inwardly inclined outer side surface lower portion 24, to ensure the consistency of the gap between the two support plates welded on both sides of the bridge shell.
[0027] The bottom plate 20 is provided with positioning pin holes 25, which are used for assembling suspension parts and ensuring accurate positioning by machining before or after welding according to process practice; the bottom plate 20 is provided with two weight-reducing grooves 26, which can reduce weight and also reduce the amount of machining.
[0028] The support plate is cast from weldable cast steel such as ZG270-480H, or forged from No. 35 steel.
[0029] A bridge housing assembly, wherein the above four identical support plates are welded to a bridge housing body 30, and the support plates are symmetrically welded at corresponding positions on the left, right, front and rear of the bridge housing body 30, wherein the inner side surface 14 of the vertical plate 10 is welded to the left and right side surfaces of the bridge housing body 30, and the upper surface 21 of the bottom plate 20 is welded to the lower bottom surface of the bridge housing body 30.
[0030] Among them, the welding adopts the inner ring welding and outer corner welding process to ensure the connection strength.
[0031] Its working principle is: S1. Processing of pallet: The pallet is cast with weldable cast steel such as ZG270-480H, or forged with No. 35 steel.
[0032] S2. Welding support plates: symmetrically weld four identical support plates at corresponding positions on the left, right, front and rear of the bridge housing body 30 , wherein the inner side surface 14 of the vertical plate 10 is welded to the left and right side surfaces of the bridge housing body 30 , and the upper surface 21 of the bottom plate 20 is welded to the lower bottom surface of the bridge housing body 30 .
[0033] Features of this application: 1. The present invention saves the space occupied by the support plate on the existing bridge shell structure, thus solving the space problem.
[0034] 2. The present invention can ensure good fit with the front and rear sides of the bridge housing body and the bottom, and high reliability after welding, thus avoiding problems such as open welding and tearing in actual applications.
[0035] 3. The present invention has the advantages of light weight and low cost.
[0036] For other contents, please refer to the prior art.
[0037] The above description is only the preferred implementation mode of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the protection scope of the present invention.
Claims
1. A support plate, characterized in that: It is an integrally formed L-shaped structure, comprising a vertical plate (10) and a bottom plate (20); the inner side surface (14) of the vertical plate (10) and the upper surface (21) of the bottom plate (20) are machined surfaces for fitting with the side surface of the bridge housing body; along the upper edge (12) and the left and right edges of the vertical plate (10), U-shaped grooves B (13) are provided for assembling U-shaped bolts between the suspension and the bridge housing assembly.
2. The support plate according to claim 1, characterized in that: A weight-reducing hole (11) is provided in the central area of the vertical plate (10).
3. The support plate according to claim 2, characterized in that: The inner side surface (14) of the vertical plate (10) is provided with a transverse groove A (15).
4. The support plate according to claim 3, characterized in that: A transverse groove B (16) is provided at the connection between the inner side surface (14) of the vertical plate (10) and the upper surface (21) of the bottom plate (20).
5. The support plate according to claim 5, characterized in that: The lower surface (22) of the bottom plate (20) is a machined surface.
6. The support plate according to claim 6, characterized in that: The outer side surface of the bottom plate (20) is a machined surface, comprising a vertical outer side surface upper portion (22) and an inwardly inclined outer side surface lower portion (24).
7. The support plate according to claim 7, characterized in that: A positioning pin hole (25) is provided on the bottom plate (20).
8. The support plate according to claim 8, characterized in that: Two weight-reducing grooves (26) are provided on the bottom plate (20).
9. The support plate according to claim 9, characterized in that: The support plate can be welded cast steel or forged.
10. A bridge housing assembly, characterized in that: Four identical support plates as claimed in claim 1 are welded to the bridge housing body (30), and the support plates are symmetrically welded at corresponding positions on the left, right, front and rear of the bridge housing body (30), wherein the inner side surface (14) of the vertical plate (10) is welded to the left and right side surfaces of the bridge housing body (30), and the upper surface (21) of the bottom plate (20) is welded to the lower bottom surface of the bridge housing body (30).