Heavy truck cab suspension

Abstract

The utility model relates to a kind of heavy truck cab suspension, solve the problems existing in the prior art heavy truck cab suspension. Including semicircular boss (1), support surface (2), body structure and assembly hole structure (4), semicircular boss (1) is located at suspension front end, support surface (2) is bolted hole upper end surface flush, hole site evenly distributed support surface, body structure left lower end is provided with triangular hole (3-1), left upper end is provided with the long hole (3-2) of two ends different curvature radius, right upper end is provided with oval hole (3-3), assembly hole structure (4) is located at body structure right lower end. The utility model is lightweight design to cab suspension, under the premise of meeting cab suspension strength, modal, fatigue requirement, achieve vehicle weight reduction, successfully realize the optimization target of lightweight and low cost, the purpose of improving the economy of whole vehicle.

Description

Technical Field

[0001] This utility model relates to a cab suspension for heavy-duty trucks, belonging to the field of automotive suspension. Background Technology

[0002] Existing heavy truck cab suspension Figure 1 An irregular semi-circular boss 01 is located at the front end of the suspension, a support surface 02 is located at the upper end of the suspension, the suspension body 03 is located on the side of the suspension, and a reinforcing rib 04 is located on the side of the suspension. The irregular boss 01 is not easy to assemble and has high mold development costs; the support surface 02 has a simple structure and room for weight optimization; the suspension body 03 has redundant strength and increased weight; and the reinforcing rib 04 has excessive functions. Utility Model Content

[0003] This invention solves the problems existing in the current heavy truck cab suspension by providing a heavy truck cab suspension.

[0004] This utility model is achieved through the following technical solution: A heavy-duty truck cab suspension includes a semi-circular boss 1, a support surface 2, a body structure, and an assembly hole structure 4. The semi-circular boss 1 is located at the front end of the suspension. The support surface 2 is a support surface with the upper end face of the bolt connection holes flush and the holes evenly distributed. A triangular hole 3-1 is opened at the lower left end of the body structure, an elongated hole 3-2 with different radii of curvature at both ends is opened at the upper left end, and an elliptical hole 3-3 is opened at the upper right end. The assembly hole structure 4 is located at the lower right end of the body structure.

[0005] This utility model achieves overall vehicle weight reduction by lightweighting the cab suspension while meeting the requirements for cab suspension strength, modal characteristics, and fatigue. It successfully achieves the optimization goals of lightweighting and low cost, thereby improving the overall vehicle economy. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the existing cab suspension in the background technology; Figure 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0007] This utility model is based on the design concept of structural topology optimization. It optimizes the topology of the original structural components at the locations where improvement and optimization are needed, so as to achieve the ultimate goal of reducing the weight and lightening the cab suspension.

[0008] The existing cab suspension structure is analyzed, understood, optimized, and improved. The cab suspension after topology optimization is as follows: Figure 2The irregular boss 01 was changed to a semi-circular boss 1, which reduced mold development costs, made machining easier, and reduced assembly difficulty; the support surface 02 was changed to a support surface 2 with the upper end face of the bolt connection hole flush and the hole positions evenly distributed, which not only realized the function of bolt assembly connection, but also reduced the weight of the structure; the body structure 03 was changed to excavate weight-reduction holes - a triangular hole 3-1 at the lower left end, a long hole 3-2 with different radii of curvature at both ends of the upper left end, and an elliptical hole 3-3 at the upper right end, which ensured the functional requirements and reduced the structural weight; the reinforcing rib 04 was removed, and the assembly hole structure 4 was retained, which ensured the functional requirements and reduced the structural weight.

[0009] This invention features a topology optimization design for the cab suspension. The optimized components not only meet various performance indicators but also achieve convenient installation and maximum weight reduction. Specifically: ① The optimized cab suspension's first-order free modal frequency is increased by 18.9%; ② The maximum stress (lifting condition) increases by 28.551 MPa, but remains below the material's yield strength; ③ The optimized structure's weight is reduced by 5.98 kg, a reduction of 31.2%; ④ The unit processing cost is reduced by 25 yuan. This invention provides a superior optimized cab suspension structure, successfully achieving the optimization goals of lightweighting and low cost, and offering a new approach to the optimized design of automotive cab suspensions.

Claims

1. A heavy-duty truck cab suspension, characterized in that: It includes a semi-circular boss (1), a support surface (2), a body structure and an assembly hole structure (4). The semi-circular boss (1) is located at the front end of the suspension. The support surface (2) is a support surface with the upper end face of the bolt connection hole flush with the hole and the hole positions are evenly distributed. A triangular hole (3-1) is opened at the lower left end of the body structure, a long hole (3-2) with different curvature radii at both ends is opened at the upper left end, and an elliptical hole (3-3) is opened at the upper right end. The assembly hole structure (4) is located at the lower right end of the body structure.

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