SU823209A1 - Vehicle body cowling - Google Patents

Description

(54) VEHICLE BODY STRENGTH

one

This invention relates to devices for reducing the aerodynamic drag of a van.

When the van moves behind its rear wall, air turbulence is formed, which significantly impairs the aerodynamic properties of the van. In order to avoid the formation of swirls; rhenium, on the outer side of the rear wall of the caravan, the fairings are installed.

A fairing of a vehicle body, preferably a van, made in the form of a pyramid with an open base mounted on the rear wall of the vehicle, is known, the base of the upper face of the pyramid being connected to the end of the roof 1.

The disadvantage of this design of the fairing is that it can only be used on open-top wagon bodies for loading and unloading.

The purpose of the invention is to provide loading and unloading operations through the tailgate of a vehicle by folding the flap and placing it on the roof.

This goal is achieved by the fact that the fairing is equipped with a rotation drive with a shaft mounted on the end of the roof, all the faces of the pyramid are connected to each other hingedly, and the lateral sides are made of two symmetric hinged parts, while the base of the upper edge is rigidly connected to said shaft.

In addition, the turn drive consists of

double-stranded pulley

on the shaft, and on the winches, kinematically connected with each other by a cable-block system.

FIG. 1 shows the fairing of the vehicle body in the working position, a general view; in fig. 2 - the same, the moment of folding; in fig. 3 - the same, 5 non-working position.

The fairing 1 of the body of the van is made in the form, for example, of a four-sided pyramid, the base of which is open and directed towards the rear wall 2 of the van. The fairing 1 consists of four faces 3, interconnected by means of hinges 4. The side faces consist of two symmetrical parts connected pivotally, with the possibility of folding inward of the pyramid.

The upper face is rigidly connected by its base with the shaft 5 mounted on the roof of the van at the junction with the rear wall. A two-strand pulley is rigidly mounted on the shaft 5. The two-strand pulley 6 through the rollers 7 and the cable system interacts with another two-strand pulley 8 fixed rigidly on the shaft and mounted on the front wall of the van. This shaft has an inner faceted opening for the removable handle 9. In addition The drive can be dried mechanically with an electric motor. Pulley 8 performs the role of a rotation mechanism for shaft 5.

Pulleys 6 and 8 are connected by cables 10 and 11, wound on pulleys in different directions, each on a separate stream. The freely rotating rollers 7 support the cables 10 and I. In order for the fairing not to depart from the rear wall of the van when the latter is moving, a latch 12 is made on the van.

The fairing works as follows.

To bring the spinner 1 into the off position, it is necessary to rotate the knob 9 in one direction. The cable 10 from the pulley 6 is wound on one of the streams of the pulley 8, the cable 11 from the pulley 8 is wound on the pulley 6. At the same time, the shaft 5 rotates and carries the upper face of the fairing rigidly connected to it. Latch 12 is now open. Upper edge around the wheel, the boiler is placed on the lid of the van. Swivel side edges ensures their folding into the inside of the pyramid. The back wall of the van is open and loading and unloading operations can be performed.

To bring the fairing to the working position, it is necessary to rotate the handle 9 in the opposite direction. In this case, the cable 11 from the pulley b is wound onto another stream of the pulley 8, and the cable 10 from the pulley 8 winds f onto the free stream of the pulley b. The shaft 5 turns back, lifts the top face of the flap 1 and lowers it behind the rear

the wall of the van. Under the action of its own weight, the hinged edges of the wing are turned and take the shape of a pyramid. The latch 12 locks the fairing in the working position.

The described fairing reduces the aerodynamic drag of the caravan, while at the same time allowing for unloading and unloading.

The use of the proposed spinner on the rear wall of the van reduces its aerodynamic resistance to 12%, which amounts to 3-3.5% of fuel economy.

Claims (2)

1. A body curler of a vehicle, preferably a van, made in the form of a pyramid with an open base mounted on the rear wall of the vehicle, the base of the upper face of the pyramid being connected to the roof end, characterized in that in order to provide loading and unloading operations through the rear the door of the vehicle by folding the skirt and then placing it on the top, it is equipped with a drive to turn it with a shaft mounted on the end of the roof, all the faces of the pyramid are connected. minutes hinged, and the side - formed of two hinged symmetrical parts, wherein the upper face of the base is rigidly connected to said shaft. 2. The spinner of claim 1, wherein the rotational drive consists of a two-strand pulley rigidly mounted on said shaft and a winch, kinematically interconnected by a cable block system. Sources of information taken into account in the examination 1. Moskovkina V.V. and others. Aerodynamic resistance of trucks and road trains and its effect on fuel efficiency M., NIIAvtoprom, 1968, p.38 (prototype). 2