Connection arrangement structure of heavy truck suspension on axle and girder

Abstract

The utility model relates to a connection arrangement structure of a heavy truck suspension on an axle and a girder, which is simple and convenient to maintain, low in structural cost and capable of prolonging the service life of a transmission shaft and an axle input flange bearing on the premise of effectively ensuring functions and can be realized under a conventional mechanical structure. The upper thrust rod is connected to the girder, the middle axle, the rear axle and the balance suspension, the lower thrust rod is connected to the girder, the middle axle, the rear axle and the balance suspension, the thrust rods, the middle axle, the rear axle and the balance suspension form a rotary motion pair, and the length of the upper thrust rod of the middle axle is equal to that of the lower thrust rod of the middle axle. The length of the middle axle connected between the upper thrust rod and the lower thrust rod of the middle axle is equal to the length of the balance suspension connected between the upper thrust rod and the lower thrust rod of the middle axle, and the length of each connecting point forms a parallelogram structure. Similarly, the lengths of the rear axle upper thrust rod and the rear axle lower thrust rod are equal, the length of the rear axle connected between the rear axle upper thrust rod and the rear axle lower thrust rod is equal to the length of the balance suspension connected between the rear axle upper thrust rod and the rear axle lower thrust rod, and the lengths of all connecting points form a parallelogram structure.

Description

Technical Field

[0001] The utility model belongs to the field of heavy truck chassis suspension components and is a structure for connecting and arranging a heavy truck suspension at a vehicle axle and a beam, and is applied to the chassis suspension structure of a heavy truck. Background Art

[0002] Heavy-duty trucks' beams and axles require connections through suspension and guide mechanisms, ensuring the designed position and movement of key components. The chassis suspension primarily connects chassis components and provides guidance. The thrust rods primarily serve these functions, determining the axle's position and posture within the vehicle, the forces applied, and the driveshaft angle. This angle impacts the vehicle's transmission efficiency and the lifespan of the axle flanges. Utility Model Content

[0003] The purpose of this utility model is to provide a highly versatile suspension connection structure that maintains a relatively stable driveshaft angle across the vehicle. This structure utilizes a conventional mechanical kinematic structure to achieve both suspension connection and a constant driveshaft angle on flat roads under varying vehicle loads. While ensuring effective functionality, this structure also simplifies maintenance, reduces structural costs, and increases the service life of the driveshaft and axle input flange bearings. This is achieved using a conventional mechanical structure.

[0004] The utility model is realized by the following technical solutions:

[0005] The invention discloses a structure for arranging the connection between axles and beams of a heavy truck suspension, wherein an upper thrust rod is connected to the beam, middle bridge, rear bridge and balance suspension, and a lower thrust rod is connected to the beam, middle bridge, rear bridge and balance suspension. The thrust rod, middle bridge, rear bridge and balance suspension form a rotational motion pair. The upper and lower thrust rods of the middle bridge are equal in length. The length of the middle bridge connected between the upper and lower thrust rods of the middle bridge is equal to the length of the balance suspension connected between the upper and lower thrust rods of the middle bridge. The lengths of the various connection points form a parallelogram structure. Similarly, the upper and lower thrust rods of the rear bridge are equal in length. The length of the rear bridge connected between the upper and lower thrust rods of the rear bridge is equal to the length of the balance suspension connected between the upper and lower thrust rods of the rear bridge. The lengths of the various connection points also form a parallelogram structure.

[0006] This utility model proposes a suspension connection structure that is simple to arrange, offers good interchangeability, and facilitates kinematic analysis. This structure is applicable to the arrangement of longitudinal thrust rods in both V-push and single-push systems. It offers a highly practical structural arrangement for heavy-duty truck dual-rear-axle suspension arrangements. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the utility model, wherein Figure a is a partial view, Figure b is a top view, and Figure c is a stereogram;

[0008] Figure 2 It is a simplified schematic diagram of the rod connection structure. DETAILED DESCRIPTION

[0009] This new design utilizes a parallelogram-shaped four-link guide structure for the suspension, ensuring a consistent drive shaft angle regardless of vehicle load or empty conditions. This structure is suitable for dual-rear-axle vehicles, such as engineering vehicles and tractors. The parallelogram design offers outstanding kinematic stability, maintaining consistent drive shaft angles across all operating conditions. This simplifies the design of drive shaft angles under varying vehicle loads, simplifying analysis and layout.

[0010] See Figure 1 、 Figure 2 The utility model is composed of a plurality of mechanical parts. This structure is a double parallelogram structure of the middle and rear axles, and the structure is schematically shown by connecting the middle and rear axles. Figure 2 Thrust rod L1) and 3) on the middle bridge Figure 2 The rear axle upper thrust rod L3) is connected to the beam 5, the middle bridge 6, the rear axle 7 and the balance suspension 9 through bolts and other accessories, and the lower thrust rod 2 ( Figure 2 The middle bridge lower thrust rod L1′)4( Figure 2 The rear axle lower thrust rod L3') is connected to the beam 5, the middle bridge 6, the rear axle 7 and the balance suspension 9 through bolts and other accessories. The thrust rod and the middle bridge, the rear axle and the balance suspension are a rotational motion pair. Since the lengths of the upper and lower thrust rods 1 and 2 of the middle bridge are equal, the length of the middle bridge connected between the upper and lower thrust rods of the middle bridge ( Figure 2 L2) and the balanced suspension length ( Figure 2 The L2′) of each connection point is equal, and the length of each connection point forms a parallelogram structure.

[0011] Similarly, the lengths of the upper and lower thrust rods 3 and 4 of the rear axle are equal, and the length of the rear axle connected between the upper and lower thrust rods of the rear axle ( Figure 2 L4') and the balanced suspension length ( Figure 2 The lengths of the connection points are equal, and the lengths of the connection points also form a parallelogram structure.

[0012] The utility model realizes a motion design in which the connection angle of the transmission shaft 8 between the middle bridge 6 and the rear bridge 7 remains unchanged under different loads on a flat road.

Claims

1. A structure for connecting a heavy truck suspension to an axle and a beam, characterized by: The upper thrust rod is connected to the main beam, middle bridge, rear axle and balance suspension, and the lower thrust rod is connected to the main beam, middle bridge, rear axle and balance suspension. The thrust rod and the middle bridge, rear axle and balance suspension form a rotational motion pair. The lengths of the upper and lower thrust rods of the middle bridge are equal, the length of the middle bridge connected between the upper and lower thrust rods of the middle bridge is equal to the length of the balance suspension connected between the upper and lower thrust rods of the middle bridge, and the lengths of each connection point form a parallelogram structure; similarly, the lengths of the upper and lower thrust rods of the rear axle are equal, the length of the rear axle connected between the upper and lower thrust rods of the rear axle is equal to the length of the balance suspension connected between the upper and lower thrust rods of the rear axle, and the lengths of each connection point also form a parallelogram structure.

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