RU183693U1 - DEPENDENT SPRING SUSPENSION OF A VEHICLE - Google Patents

Abstract

The dependent spring suspension of the vehicle front axle contains longitudinal leaf springs (1) mounted on opposite sides of the vehicle frame (2) and fixed with its middle part on the axle beam (3), shock absorbers (4) fixed with its upper part on the frame (2 ), and the bottom - on the beam axis (3), anti-roll bar (5), rubber compression buffers (6). The ends of the springs, made in the form of twisted ears with pressed-in silent blocks (7), are pivotally mounted on the frame (2) through brackets (8) and through plates (9), brackets (10). On the axle beam (3), the springs (1) are fixed using the pads (11) and stepladders (12). Suspension damping elements - shock absorbers (4) with built-in silent blocks (7) are fixed with their upper parts through four-support brackets (14) on the frame (2), and the lower ones on the axle beam (3) using detachable brackets (15). The anti-roll bar (5) consists of struts (16) and a U-shaped rod (17). The stabilizer posts (16) with their upper parts are pivotally mounted on the frame (2) through the brackets (18), and the lower ones with the bent ends of the U-shaped rod (17). With its middle part, the rod (17) is fixed to the axle beam (3) through split brackets (15). Above the spring (1), rubber compression buffers (6) are mounted on the lower shelf of the frame (2). The proposed utility model solves the problem of creating the design of a dependent vehicle suspension with high springs. 4 ill.

Description

The utility model relates to the field of transport engineering, in particular for suspension of the front axle of a vehicle and can be used on trucks to ensure their stability in lateral roll.

Known front dependent suspension of the vehicle, containing longitudinal arms made in the form of a half-spring, having one end in the form of a twisted eyelet and the ability to connect by means of an arm to the frame and on the bridge of the vehicle using top mounted pads and ladders, damping elements made of elastic-damping in the form active hydropneumatic springs, with the possibility of fixing the lower part on the bridge through the axis, which is inserted into the bracket, and the upper part on the frame through the axis, is fixed mounted on the bracket sleeve, the anti-roll bar, made in the form of a reactive rod having at the ends of the bulge in the form of bushings, into which fingers are inserted, connected to the mounting brackets to the bridge and the frame, in addition, the tool for attaching the longitudinal arms on the bridge is additionally equipped with a pad ( see RF patent No. 165670, IPC B60G 9/04, publ. 10/27/2016).

Also known is a vehicle suspension with a stabilizer, comprising a stabilizer and shock absorbing units made in the form of longitudinal springs mounted on opposite sides of the vehicle relative to its longitudinal axis, and pneumatic springs, one of the ends of the longitudinal spring is pivotally mounted in an arm located on the frame, and its central part is fixed on the axis of the vehicle, the ends of the stabilizer are pivotally mounted on the brackets, and the centers of attachment of the ends of the stabilizer are maximally are closer to the centers of attachment of one of the ends of the longitudinal spring (see RF patent No. 109437, IPC B60G 21/04, publ. 10/20/2011).

The closest to the claimed technical solution for the combination of essential features and the technical result achieved is the front suspension of the vehicle, containing leaf springs fixed by the middle part on the axis of the vehicle and whose ends, made in the form of twisted ears, are pivotally connected to the mounting brackets to the frame, this front end is connected directly to the bracket, and the rear end through the earring, anti-roll bar, consisting of struts and a U-shaped piece angi, fixed with its middle part in the brackets of the vehicle axis, and the ends bent outward - with stabilizer struts, shock absorbers with fasteners to the frame and springs, rubber compression buffers, in the middle part of the springs are mounted with an offset to the outside of the buffer stops, made in the form plates (see RF patent No. 126285, IPC B60G 9/04, publ. 03/27/2013).

These technical solutions have several disadvantages: quick wear of rubber bushings in the ears of the springs, as well as in the brackets for attaching the stabilizer struts to the frame and shock absorbers, as a result of which there is a knock in the car's suspension, there is a need for constant maintenance of the articulated mounts of the springs through the oiler in the fingers of the ears, harmful the contact of the earrings with the brackets of the rear spring mounts to the car frame, the excessive rigidity of the anti-roll bar and its harmful contact with the engine sump.

The task, which is aimed by the claimed technical solution, is to improve the suspension performance of the suspension.

To solve the problem in the dependent spring suspension of the vehicle, containing longitudinal leaf springs fixed by the middle part on the axis of the vehicle, and ends made in the form of twisted ears pivotally connected to the mounting brackets to the frame, the anti-roll bar, consisting of pivotally connected between struts and a U-shaped rod, the middle part of the vehicle axle fixed in the brackets, shock absorbers, the upper ends of which are pivotally mounted on the frame, rubber e compression buffers, the lower ends of the shock absorbers are fixed on the axle beam, while the twisted ends of the springs and shock absorbers are mounted using silent blocks. In addition, the rear ends of the springs are connected to the mounting brackets to the frame through plates placed on both sides of the coil springs of the spring, in addition to this, the stabilizer bar mounting brackets to the axle beam are detachable, and the bar itself is made with bent corners.

The set of distinctive features, namely, that the lower ends of the shock absorbers are fixed on the axle beam, while the twisted ends of the springs and shock absorbers are mounted using silent blocks to improve suspension suspension performance and increase the service life of the articulated springs.

The use of plates instead of earrings as a hinge for the rear end of the spring with the frame bracket simplifies the design and manufacturing technology of such a connection, and also eliminates harmful contact with the brackets for attaching the rear of the springs to the frame.

The implementation of the brackets connecting the stabilizer bar with the axle beam of the detachable structure allows you to simplify the process of mounting and dismounting the stabilizer bar.

The implementation of the stabilizer bar with bent corners eliminates the harmful contact of the stabilizer bar with the engine tray.

As a result of a search conducted on patent and other scientific and technical literature, no analogue was found that coincided with the claimed technical solution for the entire set of essential features. Therefore, the claimed technical solution meets the condition of "novelty."

The claimed technical solution is illustrated by drawings, which depict:

FIG. 1 - dependent spring suspension of the vehicle, General view;

FIG. 2 - the same side view;

FIG. 3 is the same, cross-sectional view of the attachment of the front end of the spring;

FIG. 4 - same, cross-sectional view of the shock absorber mount

a) the upper part, b) the lower part.

The dependent spring suspension of the vehicle front axle contains longitudinal leaf springs 1 mounted on opposite sides of the vehicle frame 2 and fixed with its middle part on the axle 3 beam, shock absorbers 4 fixed with their upper part on the frame 2, and the lower one on the axle 3 beam, anti-roll bar 5, rubber compression buffers 6.

To ensure a large vehicle carrying capacity, the inventive suspension design employs triple-leaf parabolic springs 1 of increased thickness, the ends of which are made in the form of twisted ears with pressed-in silent blocks 7. One of the ends of the longitudinal spring 1 is pivotally mounted on the frame 2 through the bracket 8 with the help of the ears and nuts . The second end of the spring 1 is pivotally mounted on the frame 2 through the plates 9 and the bracket 10 with bolts, bushings and nuts. On the axle 3 beam, the springs 1 are secured with plates 11, ladders 12 and nuts 13. The use of plates 9 instead of earrings as an articulation of the rear end of the spring with the frame bracket 10 simplifies the design and manufacturing technology of such a connection, and also eliminates harmful contact with the mounting brackets the back of the spring to the frame.

Damping (damping vibrations) suspension elements — shock absorbers 4 with built-in silent blocks 7 are fixed with their upper parts through four support brackets 14 on frame 2 using bolts, bushings and nuts. The lower parts of the shock absorbers 4 are mounted on the axle 3 beam using detachable brackets 15 located between the platform of the axle 3 beam and the lower middle part of the spring 1. The brackets 15 are equipped with “heels” for jacking the car.

The anti-roll bar 5 consists of struts 16 and a U-shaped rod 17, made with bent corners to eliminate harmful contact of the rod with the engine tray. The stabilizer posts 16 are elongated with a bend at the ends, while the ends are rounded to eliminate harmful contact with the brackets 18, through which the upper parts are pivotally mounted on the frame 2 with bolts, nuts, rubber bushings and washers. The lower parts of the rack 16 are connected to the bent ends of the U-shaped rod 17 with bolts, nuts, rubber bushings and washers. With its middle part, the rod 17 is fixed to the beam of the axis 3 through detachable brackets 15 with the help of plates 19, bolts, pillows and rings. The implementation of the brackets for connecting the stabilizer bar to the axle beam of the detachable structure simplifies the process of mounting and dismounting the stabilizer bar, and the increased distance from the axis of the eye of the bracket 15 to the supporting (road) surface eliminates harmful contact of the bracket with possible roughnesses in the road. In addition, in this design of the suspension, the seat for the stabilizer pillow is reduced for a more tight installation of the rod, which does not allow the rod to move along the axis of the eyes of the bracket 15, resulting in quick wear of the pillows and unstable operation of the vehicle stabilization system.

Above the spring 1, rubber compression buffers 6 are mounted on the lower shelf of the vehicle frame 2 with bushings, bolts and nuts.

Dependent spring suspension of the front axle of the vehicle operates as follows. When driving, the car experiences dynamic and static loads transmitted from road bumps when cornering, starting and braking, as a result of which the load-bearing elements of the vehicle experience vibration loads. To “extinguish” them, a suspension system is used, in this case, a dependent spring suspension consisting of units and parts that each perform a specific function. Springs 1 located parallel and symmetrically to the frame 2 provide longitudinal stability, as well as the smoothness of the car due to its elasticity. Damping of vibrations (damping) is ensured by shock absorbers 4. The vehicle is stabilized by the vehicle stabilization system 5: when turning left, the vehicle is tilted to the right, while the left struts 16 and the stabilizer bar 17 keep the body from tipping over. When turning right, the opposite is true. When starting and braking, longitudinal vibrations are softened by springs 1.

Dependent spring suspension according to the claimed technical solution has several advantages: the need for constant maintenance (lubrication) of rubber bushings in the ears of the springs through the grease fittings is eliminated, the operating life of the hinged springs is increased; reinforced spring leaf design, which provides greater load capacity; excessive stiffness of the suspension as a whole is excluded; increased vehicle clearance due to an increase in the height of the eyelets of the brackets for attaching the stabilizer bar to the bridge, which, in turn, eliminates the breakdown of the brackets due to their harmful contact with the supporting surface of the vehicle; simplified installation and removal of the stabilizer bar; wear of the stabilizer pads due to a tighter fit and limited axial travel due to abutment in the bend of the rod is excluded; wear of hinged mounts of shock absorbers is excluded; breaking out of the brackets of the upper shock absorber mounts is excluded; the possibility of inversion is excluded and the required stroke of the vehicle lateral stabilization system is provided; harmful contact of the ends of the stabilizer struts with their mounting brackets to the frame is excluded.

The claimed technical solution allows to improve the performance of the suspension system of the dependent spring suspension of the front axle of the vehicle by increasing the reliability and durability of its elements by improving the design and manufacturability of parts and assemblies.

The dependent spring suspension of the vehicle of the proposed design meets the condition of industrial applicability and can be manufactured on standard equipment using previously developed technologies.

Claims (4)

1. Dependent spring suspension of the vehicle, containing longitudinal leaf springs fixed by the middle part on the axis of the vehicle, and ends made in the form of twisted ears, pivotally connected to the mounting brackets to the frame, anti-roll bar, consisting of articulated struts and U-shaped rods, the middle part of the vehicle axle fixed in brackets, shock absorbers, the upper ends of which are pivotally mounted on the frame, rubber compression buffers, characterized by That the lower ends of the shock absorbers mounted on the beam axis, the mount twisted ends of the springs and shock absorbers made by means of silent blocks. 2. The dependent spring suspension of the vehicle according to claim 1, characterized in that the rear ends of the springs are connected to the mounting brackets to the frame through plates placed on both sides of the spring twisted ears. 3. The dependent spring suspension of the vehicle according to claim 1, characterized in that the brackets for attaching the stabilizer bar to the axle beam are detachable. 4. The dependent spring suspension of the vehicle according to claim 1, characterized in that the stabilizer bar is made with bent corners.

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