RU188656U1 - FOUR-ROAD CHASSIS - Google Patents

Abstract

The invention relates to mechanical engineering, namely, to vehicles intended for installation on them of various technological equipment. A four-axle 8 × 4 car chassis contains a cab 1, a load-carrying frame 2 formed by the side members and the crossbars connecting them. Cab 1 is located above the engine with the possibility of tilting forward. The engine air supply system consists of an air intake 5 fixed to the rear of cab 1, nozzles connecting the air intake 5 and an air cleaner 6 fixed to the right of the cockle wing bracket 1. Right in the exhaust system between the second 4 and the third axis 7 a silencer-neutralizer is installed horizontally 8, having a diesel particulate filter and exhaust pipe 9 which is directed at an angle relative to the axis of the car with the release of exhaust gases back. A barrier grid 10 is installed above the muffler-neutralizer 8 and to the right of it. The exhaust gas route to the muffler-neutralizer 8, consisting of a reception pipe 11, a metal hose 12, a pipe 13 and a rear pipe 14, is made with a thermal insulating layer 15 with a thickness of 10 mm. On the left between the second 4 and third axle 7 there is a neutralization tank 16, behind which a metering pump 17 is located. A noise insulation screen 23 is installed behind the engine. The technical result is to improve the environmental performance of the chassis. 3 hp f-ly, 3 ill.

Description

The invention relates to mechanical engineering, namely, to vehicles intended for installation on them of various technological equipment.

A four-axle automobile chassis made with an 8 × 4 wheel formula is known, containing a hinged cabin under which the engine is placed, a frame made of side members and crossbars connecting them and equipped with additional crossbars located between the second and third axles and amplifiers fixed with internal and the outer side of the frame, a safety beam installed at the rear of the frame, a noise insulation screen mounted behind the cabin above the engine, side protection, made together with the rear wings. The distance between the second and third axis is 4500 mm (see RF certificate No. 171044, IPC B62D 61/10 (2006.01), published on 05/17/2017).

A disadvantage of the known technical solution is its inconsistency with environmental indicators due to the absence of a neutralization system, which affects engine exhaust gases released from the muffler and polluting the air, and exhaust emissions into the atmosphere are accompanied by a high noise level.

A four-axle truck chassis, made with an 8 × 4 wheel formula, with controlled first and second axles, contains a hinged cab, under which the engine is located, a frame made of side members and crossmembers, made with an extension to the side of the cab, with a reduced width at the rear and with increased distance between the second and third axle, additional cross-beams installed on the inner side of the frame, power steering with additional power cylinder, air intake, air cleaner, silencer, installed horizontally left, with exhaust pipe facing left, receivers located inside the frame to the right and left, and a receiver unit located on the frame between the second and third axes on the right, battery box located between the first and second axes, two shortened fuel tanks placed on the frame on the left, a power take-off box installed between the third and fourth crossbars or between the engine and the gearbox, and a spare wheel located horizontally on the right (see Certificate of the Russian Federation No. 68453, IPC B62D 61/10 (2006.01), publ. November 27, 2007).

The technical solution does not provide the required environmental performance.

The closest to the claimed technical solution for the combination of essential features is a four-axle truck chassis, made with an 8 × 4 wheel formula, containing a folding cabin, under which is placed an engine, a frame made of spars and their connecting crossbars, air intake, air cleaner fixed on the right a cabin wing bracket, mounted on the left between the first and second axles, a silencer with an exhaust pipe directed downwards with the exhaust back, tank with a neutralizer, p placed behind the second axis, a metering pump connected by pipelines to a tank with a neutralizer and a silencer, a noise insulation screen mounted behind the cab above the engine (see RF Patent No. 161170, IPC B62D 61/10 (2006.01), publ. 10.04.2016).

Known technical solution does not meet the promising environmental indicators, because engine exhaust gases released from the muffler have a large amount of harmful substances. In addition, the emission of exhaust gases into the atmosphere is accompanied by a high level of noise.

The problem to which the proposed technical solution is aimed, is to improve the environmental performance of the chassis by reducing the amount of harmful substances in the exhaust gases released from the muffler.

To solve the problem in a four-axle car chassis, made with an 8 × 4 wheel formula, containing a hinged cabin under which the engine is located, a frame made of side members and crossbars connecting them, an air intake, an air cleaner fixed behind the cabin, a silencer-neutralizer with exhaust pipe, neutralization tank, metering pump, connected by pipelines with neutralization tank and silencer-neutralizer, exhaust gas route to the silencer-neutralizer, sound insulation The exhaust screen located behind the cab above the engine, the silencer-neutralizer has a diesel particulate filter, and the exhaust gas route to the silencer-neutralizer is made with a thermal insulating layer. At the same time, the silencer-neutralizer is mounted horizontally to the right between the second and third axles, its exhaust pipe is angled relative to the vehicle’s axis with exhaust gas flowing back, the neutralization tank is installed to the left between the second and third axles, the metering pump is located behind the neutralization tank, and silencer-neutralizer and to the right of it is installed fencing mesh.

Installing a silencer-neutralizer with a particulate filter reduces the emission of harmful substances. Executing an exhaust gas supply route to a silencing neutralizer with a thermal insulating layer prevents the temperature from the engine to the silencing neutralizer from falling, which speeds up the heating of the catalytic reducing agent in the silencing neutralizer. Together, these signs contribute to the improvement of environmental performance of the chassis.

The claimed technical solution is illustrated by drawings: FIG. 1 - four-axle car chassis, side view; FIG. 2 - the same, top view;

FIG. 3 - route for supplying exhaust gases to the silencer-neutralizer.

A four-axle 8 × 4 car chassis contains a cab 1, a load-carrying frame 2 formed by the side members and the crossbars connecting them. The frame 2 is made with the extension towards the cab 1, and in the rear part the width of the frame 2 is reduced to ensure the installation of the wheels. The wide part of the frame 2 is made elongated and provided with two additional crossbars, which increase the rigidity of the frame. Amplifiers are installed on the inside and outside of the frame. The first axis 3 and the second axis 4 are made manageable. In front of the frame 2, a power unit is installed, consisting of an engine, a clutch with a pneumohydraulic booster and a manual transmission. Cab 1 is located above the engine with the possibility of tilting forward to maintain the engine.

The engine air supply system consists of an air intake 5 fixed to the rear of cabin 1, nozzles connecting the air intake 5 and an air cleaner 6 fixed to the right of the wing bracket of the cabin 1.

In the exhaust system on the right between the second 4 and third axle 7, a silencer-neutralizer 8 is installed horizontally, having a diesel particulate filter and exhaust pipe 9 of which is directed at an angle of 40 degrees relative to the axis of the vehicle, with exhaust gas flowing back. This design provides high environmental performance chassis. Above the muffler-neutralizer 8 and to the right of it, a protective net 10 is installed, which provides protection against hot structures.

The route for supplying exhaust gases to the silencer-neutralizer 8, consisting of a reception pipe 11, a metal hose 12, a pipe 13 and a rear pipe 14, is made with a thermal insulating layer 15 10 mm thick that prevents the temperature from falling on the section from the engine to the silencing neutralizer 8, which accelerates the heating of the catalytic reducing agent located in the muffler-neutralizer 8.

On the left between the second 4 and the third axis 7 is the neutralization tank 16, behind which the metering pump 17 is located.

On the frame 2 to the right between the axles 3 and 4, a battery box 18 is installed, and to the left between the second axis 4 and the third axis 7 there is a fuel tank 19.

The steering is equipped with an additional power cylinder, which is attached on one side to the bracket attached to the frame side member 2.

On the left between the first 3 and the second axis 4, a receiver unit 20 is installed. Inside the frame 2 between the second axis 4 and the third axis 7, the receivers 21 are fixed by means of brackets. In the rear part of the frame 2, the receiver 22 is fixed on the cross member with clamps.

Behind the cab, above the engine, there is a noise insulation screen 23, which reduces the engine noise level.

The toolbox 24 is located on the right behind the second axis 4. The claimed technical solution allows to improve the environmental performance of the chassis.

The claimed technical solution is possible to implement on standard technological equipment.

Claims (4)

1. Four-axle car chassis, made with an 8 × 4 wheel formula, containing a hinged cab, under which the engine is placed, a frame made of side members and crossbars connecting them, an air intake, an air cleaner attached to the cab on the right, a silencer-neutralizer with exhaust pipe, a tank neutralization system, metering pump, connected by pipelines with neutralization tank and silencer-neutralizer, exhaust gas route to the silencer-neutralizer, noise insulation screen located behind ABIN on the engine, characterized in that the silencer-catalyst is a particulate filter, and the exhaust gas inlet path to the exhaust-converter provided with a thermally insulating layer. 2. Four-axle automobile chassis according to claim 1, characterized in that the silencer-neutralizer is mounted horizontally to the right between the second and third axles, and its exhaust pipe is angled relative to the axis of the car with the exhaust gases back. 3. Four-axle automobile chassis according to claim 1, characterized in that the neutralization tank is installed on the left between the second and third axles, the metering pump is located behind the neutralization tank. 4. The four-axle automobile chassis according to claim 1, characterized in that a fencing grid is installed above the silencer-neutralizer and to its right.

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