BRMU9001376Y1 - SUPPORT FOR AXLE SUSPENDER PNEUMATIC SPRING - Google Patents

Abstract

axle hanger air spring bracket. The present utility model describes a support for pneumatic springs used in suspension systems for vehicle axles used in trailers, semi-trailers, trucks and buses, which is fixed to the vehicle axle through the use of screws, dispensing with welding of components.

Description

(54) Title: SUPPORT FOR AXLE SUSPENSOR PNEUMATIC SPRING (51) Int.CI .: F16F 9/54 (73) Holder (s): KLL EQUIPAMENTOS PARA TRANSPORTE LTDA.

(72) Inventor (s): JUAREZ KEISERMAN

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AXLE SUSPENSOR PNEUMATIC SPRING SUPPORT (001) This utility model describes a support for pneumatic springs used in systems for suspending vehicle axles used in trailers, semi-trailers, trucks and buses, forming part of the automotive industry field.

(002) Commercial vehicles equipped with auxiliary axles and trailers and semi-trailers equipped with more than 1 axle, usually use a system that allows to lift their axles when they travel empty or with little load, only the axles intended to support their small vehicle remain on the ground. load or own weight. (003) Systems designed to lift these axles usually use pneumatic springs that, when pressurized, exert a force on the axle, lifting it from the ground. For this to be accomplished, two supports are required, one lower fixed directly or indirectly to the vehicle structure and another upper fixed directly or indirectly to the axle that will be raised. Between these two supports the pneumatic spring is attached, which will exert the force to lift the axle. (004) These lifting systems are widely used in air suspensions. Many of these suspensions, due to their functional characteristics, usually, when the vehicle travels on roads in poor conditions (a recurrent situation in the Brazilian road system), introducing high tensions on its axles. Thus, with the weight exerted by these suspensions at their attachment points on the vehicle axles, they end up being damaged and their useful life is considerably reduced.

(005) In the current state of the art the supports for pneumatic springs, used to lift the axles, are fixed to the axles by welding process. These welded supports generate considerable concentrations of stresses in the axes leading them

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2/4 often to break.

(006) To try to solve the problem of stress concentration on the axles, the documents MU 8101579-8 and EP0941915 developed a system where the pneumatic actuator acts on the moving bar, differentiating one from the other only by the shape of the support of the actuator and the element intermediate between the balloon and the movable bar.

(007) These solutions did not decrease the number of contact points of the acting elements, maintaining the number of regions subject to wear.

(008) The purpose of this utility model is to provide a support for pneumatic springs for axle suspension, used in vehicle axle suspension systems, used in trailers and semi-trailers, which aims to solve the problems found in the state of the art.

(009) To achieve the above objective, the support for pneumatic springs used in the systems for suspending vehicle axles presented here uses an upper support bolted to the axle, thus eliminating the tension concentrations existing in the axles with welded supports.

(010) In order to better describe the technical characteristics of the present utility model, applied to the system of lifting vehicle suspension axles for trucks, trailers and semi-trailers, the following figures are presented:

(011) Figure 1 shows a perspective view of a state-of-the-art air suspension, equipped with a system to lift the axle, designed according to the current state of the art, where the axle (1), the air springs of the suspension (2), the upper air spring support (3) welded to the axle (1), the lower air spring support (4), the air spring of the lifting system

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3/4 axle (5), springs (6), suspension brackets (7), shock absorbers (8), axle fixing screws (9) to springs (6) and a representative section of the vehicle chassis where the system (10) is mounted.

(012) Figure 2 shows a side plan view of the same state of the art suspension shown in Figure 1.

(013) Figure 3 shows a perspective view of the state of the art of shaft assembly (1) with its components, of the same suspension shown in figure 1, where the upper support of the welded air spring (3) can be seen to the axis (1).

(014) Figure 4 shows a perspective view of a pneumatic suspension of the present invention, provided with the support for air springs, where the axle (11), the suspension air springs (12), the upper spring support can be seen pneumatic (13) fixed to the axle (11) using the axle fixing screws (19) to the springs (16), the lower pneumatic spring support (14), the pneumatic spring of the axle lifting system (15), the springs (16), suspension supports (17), shock absorbers (18), axle fixing screws (19) to the springs (16) and a representative section of the vehicle chassis where the system is mounted (10).

(015) Figure 5 shows a side plan view of the same suspension shown in figure 4.

(016) Figure 6 shows a perspective view of the assembly of the shaft (11) with its components, of the same suspension shown in figure 4, where the upper support of the pneumatic spring (13) attached to the shaft (11) can be seen. through the axle fixing screws (19) to the springs (16).

(017) The present utility model, as mentioned above, proposes the fixation of the support for pneumatic springs (12) through screws or clamps (19), being

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4/4 that these screws or clamps, are the same that already fix the shaft to its springs (6), providing greater resistance and durability.

(018) Unlike existing suspension systems in the prior art, normally welded at a single point on the shaft, usually at the center of the shaft, the present invention has two fixing points with screws or clamps (19), one at each point intersection of the shaft (11) with the springs (16). This form of arrangement divides the tension generated on the shaft, making the support for pneumatic springs and the shaft itself (11) obtain a longer useful life.

(019) Said support, it is preferably built in metal sheets, steel, cast iron, metal alloys and carbon fiber. Also, this support can be manufactured in different dimensions and geometric shapes, to adapt it to the most different types of axes.

(020) The proposed system can be configured according to vehicle suspensions with axles of varying gauge configurations, brakes, wheels and other components normally used.

(021) In a preferred embodiment, the support for pneumatic springs proposed here has its length according to the distance between springs (16), placed parallel to the shaft (11), being thus screwed by the screws (19) that are used to fix the shaft (11) to the springs (16).

(022) It should be evident to those skilled in the art that the present utility model can be configured in other specific ways without departing from the spirit or scope of the invention. In particular, it should be understood that the present model can be configured in the ways described as long as the function presented here remains.

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Claims (1)

1. SUPPORT DEVICE FOR AXIS SUSPENSOR PNEUMATIC SPRING, characterized by the upper support of the pneumatic spring (13) being fixed to the axle (11) of the vehicle using screws or clamps (19), without the need for welding, being the fixation performed at two points located at the intersections of the shaft (11) with the springs (16), and the screws or clamps (19) used to fix the upper support of the pneumatic spring (13) are the same screws or clamps responsible for fixing the axle (11) to the springs (16), being further configured according to the suspensions of vehicles with axles of varying gauge configurations, brakes, wheels and other components normally used, the support being made of metal plates, steel, cast iron, metal alloys and carbon fiber, being able to be manufactured in several dimensions and geometric shapes, to adapt it to the most different types of axles and still in a preferred incorporation, to have the upper support of the pneumatic spring (1 3) a length according to the distance between springs (16), being placed parallel to the shaft (11), with its ends being screwed at the intersection between the shaft (11) and the springs (16), using the screws (19) which are also used to fix the shaft (11) to the springs (16). Petition 870180012841, of 02/16/2018, p. 12/12