Trailing arm suspension

Abstract

The utility model relates to the transport industry, namely to the pneumatic suspension of vehicles, in particular to a longitudinal suspension arm of a vehicle. The longitudinal suspension arm is designed as an unequal-arm lever and comprises a larger and a smaller arm (1 and 2). At the intersection of the arms (1 and 2) and at the end of the larger arm (1), openings (3) for accommodating a hinge joint are made. At the end of the smaller arm (2), an opening (4) for a tie rod is made. The shelves (5 and 6) of the lever are made expanding from the end of the larger arm (1) to the opening (4) for the tie rod. The technical result consists in increasing the reliability and durability of the longitudinal suspension arm. 2 ill.

Description

[0001] The utility model relates to the transport industry, to the air suspension of vehicles, in particular to the longitudinal arm of the vehicle suspension.

[0002] A longitudinal suspension arm for a vehicle is known, made with two arms, the arms of which are located at an angle to each other and have different lengths, at the intersection of the arms and at the end of the second arm there are thickenings in the form of housings with holes for accommodating hinges for the hinged connection of the arm with the frame and the bridge, the first arm is located horizontally and on its horizontal surface there is a platform with at least two holes for fastening an elastic element, on its vertical surface there are holes for a coupler and a shock absorber mount, and at the end there are eyes with holes. The arm has a variable cross-section in the vertical plane (see patent RU 94517, IPC B60G 3 / 00, published 05 / 27 / 2010).

[0003] The closest to a utility model in terms of the set of essential features is a longitudinal suspension arm of a vehicle, made in the form of an unequal-arm lever, at the intersection of the arms of which and at the end of the larger arm there are openings for placing a hinge joint, on the upper shelf of the smaller arm there is a support surface, and on the vertical wall there are openings for a coupler and a shock absorber mount, while the upper shelf of the smaller arm is made with a recess in the area of ​​the opening for fastening the shock absorber (see patent RU 231649, IPC B60G 3 / 00, published 04.02.2025).

[0004] The disadvantages of known technical solutions include insufficient reliability and durability of the longitudinal arm, caused by the low rigidity of the longitudinal arm due to the presence of multiple mounting holes on the short arm and a recess on the upper shelf, which weaken the design of the longitudinal arm and do not allow the use of a more rigid coupler.

[0005] The technical problem that the utility model is aimed at solving is increasing the reliability and durability of the longitudinal suspension arm by increasing its rigidity and strength.

[0006] The technical result consists in increasing the reliability and durability of the longitudinal suspension arm and is achieved due to the fact that in the longitudinal suspension arm, made in the form of an unequal-arm lever, at the intersection of the arms of which and at the end of the larger arm, holes are made for placing the hinge joint, and at the end of the smaller arm, a hole is made for the tie rod, the shelves of the lever are made expanding from the end of the larger arm to the hole for the tie rod.

[0007] A distinctive feature is the execution of the lever shelves expanding from the end of the larger arm to the hole for the tie.

[0008] The expansion of the control arm shelves from the end of the larger arm to the tie rod hole, combined with the features of the restrictive part of the formula, increased the rigidity and strength of the trailing arm by eliminating the support surface with air spring mounting holes, the shock absorber mounting hole, and the recess on the upper shelf for the shock absorber, which place a significant load on the trailing arm, weakening it. This design also increased the reliability and durability of the trailing arm and the vehicle's suspension as a whole. Furthermore, this trailing arm design allowed the use of a larger tie rod, which increased the rigidity of the entire suspension assembly and eliminated the need for a stabilizer bar.

[0009] The utility model is illustrated by drawings:

[0010] Fig. 1 - longitudinal suspension arm, general view;

[0011] Fig. 2 - the same, top view.

[0012] The trailing arm suspension is designed as an unequal-arm lever and comprises a larger arm 1 and a smaller arm 2. At the end of arm 1, a hole 3 is provided for accommodating a pivot joint for attachment to the vehicle frame. At the intersection of arms 1 and 2, a hole 3 is provided for accommodating a pivot joint for connection to the vehicle axle. At the end of arm 2, a hole 4 is provided for a tie rod, which can be of any shape that prevents the suspension tie rod from twisting, in particular, an oval shape.

[0013] The trailing arm can be made of a T- or I-beam profile, particularly an I-beam. The trailing arm suspension is designed with upper and lower flanges 5 and 6, respectively. The flanges 5 and 6 expand from the end of the larger arm 1 to the hole 4 for the tie rod. Expanding flanges 5 and 6 of the trailing arm increase the rigidity and strength of the trailing arm and allow the use of a larger tie rod, eliminating the need for a stabilizer bar on the vehicle's suspension.

[0014] The utility model has improved the reliability and durability of the trailing arm suspension.

[0015] The trailing arm can be manufactured on standard equipment using modern technology and materials.

Claims

A longitudinal suspension arm, made in the form of an unequal-arm lever, at the intersection of the arms of which and at the end of the larger arm there are openings for placing a hinge joint, and at the end of the smaller arm there is an opening for a coupler, characterized in that the shelves of the lever are made to expand from the end of the larger arm to the opening for the coupler.

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