RU215263U1 - Balance spring suspension - Google Patents

Abstract

The utility model relates to the field of transport engineering, namely, to balancing spring suspensions of vehicles. Balance spring suspension of a vehicle comprises leaf springs (1), upper V-shaped torque rods (2) and lower torque rods (3), brackets (4) with pressed-in axles (5) of balancers, anti-roll bars, consisting of racks (6 ) and U-shaped rods (7). The springs (1) are fixed in the middle part on the shoes (8) with the help of pads (9) and stepladders (10). Cushions (13) are fixed to the right and left on the middle axle (11) and rear axle (12), on which the ends of the springs (1) are fixed with the help of plates (14). The upper V-shaped jet rods (2) are installed with one of their ends on the bridges (11) and (12) through the levers (15), and with the other ends with the help of brackets (16) - on the frame (17). Brackets (4) fastened from below to the cross member of the frame (17) are interconnected in the lower parts by a coupler (18), on the ends of which there are brackets (19) for fastening the ends of the lower torque rods (3). The other ends of the rod (3) are attached to the middle (11) and rear axle (12). The coupler (18) is made with a bend in the central part. The U-shaped rods (7) of the transverse stability of the vehicle are fixed in front of the axle (11) and behind the axle (12) through levers (20) and suspended on racks (6) attached through brackets (21) to the frame (17). Silent blocks are used as swivel joints of U-shaped rods (7) and racks (6) of stabilizers. In addition, the lower part of the uprights (6) consists of two detachable parts. The technical result is to increase the reliability of the operation of the vehicle. 4 ill.

Description

The utility model relates to the field of transport engineering, namely, to balancing spring suspensions of vehicles.

Known balancing spring suspension of the vehicle, containing two longitudinal leaf springs, upper and lower longitudinal jet rods, right and left brackets with pressed axles balancers and anti-roll bar with a U-shaped bar and uprights. The leaf springs are fixed in the middle part with the help of stepladders to the shoe. On the upper parts of the beams of the middle and rear axles, spring supports are installed on the right and left, fixed together with the levers located under them with the help of bolts and nuts. On the supports of the springs, the ends of the leaf springs are fixed. The upper jet rods are made at the ends with rubber-metal hinges, and are installed at one end on the crankcase of the axle reduction gear, and with the other end using a bracket - on the frame cross member. In the brackets, a transverse coupler is rigidly fixed, at the ends of which, through the spacer elements, two-support rubber-metal hinges of the lower torque rods are fixed, connecting the brackets of the balancers with the beams of the bridges of the vehicle. (see KAMAZ-6520 rear suspension, https://www.konsulavto.ru/acat/trucks/kamaz/kamaz-6520/podveska-zadnjaja-v-sbore, accessed 08.08.2022).

Known balancing spring suspension of the vehicle, containing leaf springs, fixed in the middle part with the help of ladders to the shoe, and the ends - on the supports of the bridges, the upper V-shaped jet rods, installed at one end on the bridge, and the other with the help of a bracket - on the frame, the lower jet rods, brackets with balancer axles, travel stops attached to the lower shelves of the frame side members above the middle and rear axles, anti-roll bar, consisting of struts and a U-shaped rod, fixed with bent ends through the lower levers with the rear axle, shock absorbers fixed to the lower partly to the lower arms, and the upper part through the bracket - to the side walls of the frame side members, the anti-roll bar, fixed through the lower arms with the middle axle, while the anti-roll bars are connected to the side wall of the frame, and the lower jet rods are fixed through the bosses to the bracket balancer axles (see patent RU No. 2 00694, IPC B60G5/00, B60G11/02 (2006.01), publ. 11/05/2020).

The disadvantage of the known solutions is the lack of reliable fixation of the ends of the springs, which increases the risk of them jumping out of the bridges in the event of maximum hanging (rebound stroke) of the bridges, in addition, strength indicators are not provided, which negatively affects the reliability of the structure.

Closest to the claimed technical solution in terms of the essential features is the balancing suspension of the bridges of the vehicle, containing longitudinal leaf springs, fixed in the middle part with the help of ladders to the shoe, and the ends mounted on the bridge supports, having rubber-metal hinges, the upper jet rods, mounted at one end on the crankcase of the axle reducer, and with the help of a bracket - on the frame cross member, and lower jet rods, brackets with pressed balancer axles, a transverse coupler rigidly fixed in the brackets, at the ends of which, through spacer elements, two-support rubber-metal hinges of the lower jet rods connecting the balancer brackets with beams are fixed vehicle bridges. The suspension also contains a stabilizer bar fixed on the bridge, consisting of struts and a U-shaped frame, while the ends of the leaf springs are mounted on the bridge supports through elastic elements. The upper jet rods are V-shaped (see patent RU No. 148755, IPC B60G5/00 (2006.01), publ. 10.12.2014).

The design of the suspension described above has nodes that are less durable and reliable.

The task to be solved by the claimed technical solution is to increase the reliability in the operation of the vehicle.

To solve the problem, a balancing spring suspension of a vehicle, containing leaf springs, made with the possibility of fastening the ends on the bridge supports and fixed by the middle part with the help of stepladders to the shoe, fixed on brackets with pressed axles of the balancers, while the brackets are connected to each other in the lower parts of the transverse coupler, at the ends of which there are brackets for attaching the ends of the lower torque rods, an anti-roll bar, consisting of struts and a U-shaped rod and made with the possibility of fastening with bent ends through the lower levers to the rear axle, additionally contains a stabilizer bar, made with the possibility of fastening through the lower levers with the middle axle, silent blocks are used as swivel joints of the U-shaped rods and stabilizer struts, while the lower part of the struts consists of two detachable parts, in addition, the ends of the springs lying on the axle supports are fixed plates.

The set of essential features, which consists in the fact that the suspension additionally contains an anti-roll bar, made with the possibility of fastening through the lower levers with the middle axle, silent blocks are used as swivel joints of the U-shaped rods and stabilizer struts, while the lower part of the struts consists of two detachable parts, in addition, the ends of the springs lying on the axle supports are fixed with plates, which makes it possible to ensure the reliability of the structure during its operation on a vehicle.

The proposed technical solution is illustrated by drawings:

fig. 1 - balancing spring suspension, top view in isometry;

fig. 2 – the same, isometric view from below;

fig. 3 - suspension assembly with frame and bridges, left view;

fig. 4 - section A-A in Fig.3.

Balance spring suspension of the vehicle contains leaf springs 1, upper V-shaped jet rods 2 and lower jet rods 3, brackets 4 with pressed-in axles 5 of balancers, anti-roll bars, consisting of racks 6 and U-shaped rods 7.

The springs 1 are fixed in the middle part on the shoes 8 with the help of pads 9 and ladders 10. The shoes 8 are attached to the brackets 4 through the axles 5 with the help of nuts. On the right and left on the middle axle 11 and the rear axle 12, cushions 13 are fixed, on which the ends of the springs 1 are fixed with the help of plates 14, which eliminates the possibility of separation of the springs 1 and axles 11 and 12. In addition, this solution allows you to limit the travel of axles 11 and 12 to hang up.

The upper V-shaped jet rods 2 are installed with one of their ends on the bridges 11 and 12 through the levers 15, and with the other ends with the help of brackets 16 - on the frame 17. The levers 15 are equipped with reinforcing ribs that increase the strength of the parts. Brackets 4, attached from below to the cross member of the frame 17, are interconnected in the lower parts by a coupler 18, at the ends of which there are brackets 19 for attaching the ends of the lower jet rods 3. The other ends of the rod 3 are attached to the middle 11 and the rear axle 12.

The U-shaped rods 7 of the transverse stability of the car are fixed in front of the axle 11 and behind the axle 12 through the levers 20 and suspended on the uprights 6, which are attached through the brackets 21 to the frame 17. vibration loads transmitted from road surface irregularities both to the elements of the stabilization system and, in turn, to the car body as a whole. Silent blocks have better vibration damping ability and greater durability. On the analogue, bushings and cushions made of Vitur are used, the durability, wear resistance and depreciation properties of which are lower. In addition, the lower part of the struts 6 consists of two detachable parts, which eliminates the need for long-term pressing of the rod 7 into the eye of the lower part of the strut 6 (as in analogs), thereby increasing the reliability of the design and simplifying the process of assembling the suspension.

From the outside, on the side walls of the side members of the frame 17, limiters 22 of the compression stroke of the springs 1 are installed. Mounting on the lower flange of the spar is highly undesirable due to its deflection (deformation) under shock loads perceived by the frame from bridges. On the inventive suspension, the spring 1 reaches the limiter 22 earlier than the bridges 11 and 12 could reach the frame 17. Thus, the possibility of such undesirable contact is excluded.

An additional advantage is the use of screed 18 with a bend in the central part. Such a coupler is universal and unified, since if the cardan shaft is located below the axis of the coupler 18, there will be no harmful contact between them.

The proposed technical solution allows to increase the reliability of the design during operation of the vehicle.

The proposed technical solution is possible for implementation on standard process equipment.

Claims (1)

Balanced spring suspension of a vehicle, containing leaf springs, made with the possibility of fastening with their ends on the bridge supports and fixed by the middle part with the help of stepladders to a shoe fixed on brackets with pressed-in axles of the balancers, while the brackets are interconnected in the lower parts by a transverse coupler, at the ends which has brackets for attaching the ends of the lower jet rods, an anti-roll bar consisting of struts and a U-shaped rod and made with the possibility of attaching the bent ends through the lower levers to the rear axle, differing the fact that it additionally contains an anti-roll bar, made with the possibility of fastening through the lower levers with a middle axle, silent blocks are used as swivel joints of the U-shaped rods and stabilizer struts, while the lower part of the struts consists of two detachable parts, in addition, the ends of the springs lying on the bridge supports are fixed by plates.

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