RU2403528C2 - Multifunctional crawler chassis - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: chassis contains caterpillar drives, individual torsion suspension of six track rollers with telescopic hydraulic dampers and body. Telescopic hydraulic dampers are installed on balance beams of two front and one rear rollers in each drive. The body includes driving compartment located in the front part of the body, and engine-transmission compartment where marching engine is connected with board gearboxes via input reducing gear. Length of body front part is increased to meet condition of engine-transmission compartment location immediately behind the driving compartment. Kinematic link of input reducing gear with board boxes is located opposite to high speed shaft. Front wheels in caterpillar drive are driving wheels, tensioner is aft mechanism, and kinematic link of gear engagement is reserved point for additional power extraction of various purpose armor objects.

EFFECT: creation of multifunctional crawler carrier chassis with increased bearing capacity in equipped condition up to 42 t.

4 cl, 3 dwg

Description

The invention relates to armored vehicles with pressurized crew compartments, and more particularly, to the chassis of an armored vehicle with an MTO located behind the traffic control compartment.

The MT-L multi-purpose tractor chassis is known for various modifications of civilian and defense products (more than 20 types of armored vehicles) (V.F. Platonov. Tracked conveyor tractors. M., Engineering, 1978, pp. 139-200; G.L. .Kholavsky. Encyclopedia of armored vehicles caterpillar combat vehicles 1919-2000 (Harvest, 2001, pp. 352-354), made with a caterpillar mover and housing, in front of which there is a cabin (traffic control compartment), and behind it engine-transmission compartment with a marching engine like YaMZ with a capacity of 240 hp, located married along the axis of the hull, and the cargo compartment. The cargo compartment is located along the length of the hull from the transverse engine baffle to the stern sheet, the operational length of which is 42.8% of the length of the hull of the chassis itself. The cab is mounted above the transmission, with the help of which kinematic communication is made from the high-speed motor shaft, through the cardan, gearbox, final drives to the front drive wheels of the caterpillar mover, which does not have supporting rollers on the upper track contour.

Given the variety of loading conditions of the family of machines created on the basis of a unified chassis, two versions of the caterpillar propulsion unit and the running gear as a whole are developed and used: with six and seven track rollers on board. On the balancers of the first and last track rollers mounted telescopic hydraulic shock absorbers. The suspension itself is made individual torsion bar on each track roller. The mass of the equipped conveyor tractor is 8500 ± 2.5% kg. The mass of the transported cargo without a trailer is 4250 kg. The number of seats in the cabin is 8 people. Track - 2500 mm, clearance - 395 mm. The contact length of the tracked contour with the ground for 6-track rollers is 3700 mm, for 7-track rollers - 4445 mm. The ratio of the track contact length to the track gauge is 1.48 and 1.78, respectively.

The disadvantages of this design are:

- low weight loading for cargo transportation;

- low power marching engine;

- the large length of the engine compartment due to the location of the mid-flight engine;

- low armor protection of the chassis;

- lack of attachments (self-digging system) for tearing in the ground of a trench at a number of objects with weapons for firing from shelters (objects 9P149 "Sturm-S" - self-propelled tank destroyer; 2C1 "Gvozdika" - 122-mm self-propelled howitzer, 82-mm self-propelled mortar "Cornflower", etc.);

- low clearance;

- the absence of supporting rollers for the upper branch of the caterpillar contour.

The closest to the claimed invention in terms of essential features is the chassis of the object of armored vehicles - self-propelled artillery 2S19 (Kh.L. Kholyavsky. Encyclopedia of armored vehicles tracked combat vehicles 1919-2000. "Harvest", 2001, pp. 199-204), made with a caterpillar mover, a body with armor protection from armor-piercing bullets and fragments, a turret of circular rotation in the horizontal plane with armament of a caliber of 152.4 mm artillery guns and angles of vertical guidance from -3 to 70 °. In the front of the hull on the longitudinal axis of the chassis there is a motion control compartment, in the stern, in an isolated compartment, there is a motor-transmission compartment in which kinematic communication from the high-speed shaft of the main engine to the shaft connecting the final drives is provided through the input gear. The main engine is located across the longitudinal axis of the chassis. In the middle part of the chassis chassis and the tower reserved volume, a fighting compartment is equipped, connected to the traffic control compartment by a possible transition. On the bottom behind the driver’s seat is a hatch for the emergency exit of the entire crew from the facility. A self-dipping system is installed on the lower frontal sheet of the chassis housing.

Caterpillar movers containing an individual torsion bar suspension of six track rollers with telescopic hydraulic shock absorbers are mounted on the balancers of two front and one rear rollers in each mover.

The width of the track is 580 mm. Track gauge - 2800 mm. The ratio of the contact length of the track contour with the ground to the base track is 1.61. The curb weight is 42 tons. The clearance is 435 mm. Marching engine power 840 hp

The disadvantages of this design are:

- the rear location of the engine-transmission compartment and, as a result, the long mechanical kinematic connections of the onboard gearboxes control;

- the lack of sealing and separation of the two compartments among themselves, which reduces the life support of the crew as a whole;

- sharply limited the ability to create objects of armored vehicles due to the location of the MTO in the stern;

- the lack of reserve space in the input gearbox does not allow the selection of additional mechanical power of objects for various purposes.

The problem to which the invention is directed, is the creation of a new basic domestic multi-purpose tracked chassis with increased carrying capacity in running order up to 42 tons.

The solution to this technical problem is achieved by the fact that the caterpillar chassis of the domestic 2C19 armored vehicle with six track rollers is increased in length in its front so that it allows the engine-transmission compartment to be located right behind the traffic control compartment, and, at the same time, the input gearbox is made so that the kinematic connection with the on-board gearboxes is located on the other side of the high-speed shaft, which allows the front wheels in the caterpillar to become leading, tensioning mechanism ISMU - feed, and the kinematic connection of gearing to the output shaft becomes a place for additional power take-off.

As a result of this, the middle and aft parts of such a hull, closed on top with an armor plate, can be used as a loading platform with a free reserved volume at the bottom.

In addition, as an embodiment, the upper part of the hull along its length from the transverse rear partition of the engine compartment to the stern can be made in the form of a removable roof with sealing along the perimeter of the joint with the side elements of the hull by installing gaskets, for example, soft material rubber.

In addition, as an embodiment, the control compartment can be arranged to accommodate additional landing places, for example, two people, which makes it possible to form an isolated module with life support and security in the front of the case with the remote control of the equipment installed on the platform.

A variant of execution may also be the implementation of an increased length of the chassis of the chassis due to the installation of the seventh pair of track rollers to increase the weight loading of the object of the armored vehicles, and at the same time, the ratio of the contact length of the tracked contour with the ground is set at 1.65-1.68.

Figure 1 shows a General view of a multi-purpose tracked chassis, left view.

Figure 2 shows the design of the upper part of the housing for the installation of a removable roof.

Figure 3 shows a family of possible unified machines.

The chassis contains (Fig. 1) a housing 1, a motion control compartment 2, a motor-transmission compartment 3 and a caterpillar mover 4. In the motor-transmission compartment 3 there is a main engine 5 and the systems 6 serving it, an upgraded input gearbox 7 and final drives 8 which are connected via final drives (not shown) respectively to the drive wheels 9 of the caterpillar mover 4. The caterpillar mover 4 contains an individual torsion bar suspension 10 with six track rollers 11. On the balancers 12 are two front telescopic hydraulic shock absorbers 13 are installed on one rear roller 13. Caterpillar mover 4 is made with supporting rollers 14 for the upper track circumference 15. The tensioning mechanism 16 is located in the rear of the housing 1. In the aft sheet 17 of the housing 1 there is a mounting hatch 18 with a hinged lid 19 and a sealing 20 around the perimeter hatchway opening.

Located behind the engine compartment towards the rear, compartment 21, in addition to the tension mechanism 16 located therein, is designed to install fuel tanks 22 for the main engine 5. The upper part of this volume in the housing 1 can be of various designs:

- all-welded roof 23 with the subsequent installation of stiffeners,

openings for mounting a slewing ring for a turret (not shown);

- a removable roof 24 (figure 2) with installation and fastening it around the perimeter on the beam element 25 with the help of fasteners 26 and a sealing gasket 27, on which the slewing device or mounting hatches (not shown) can also be installed.

At the same time, along the perimeter of the same part, elements of pivoting loops 28 are installed on the housing 1 for installing the hinged sides forming the body 29 (shown conditionally). Such a body can be open or made with the installation of an easily removable awning (not shown). In addition, along the hull on both sides on the fenders 30 mounted elements of the hinges 31 for installing removable flaps (not shown) to close the bottom of the hull from projectiles of cumulative type.

The operation of such a chassis does not differ from the base.

Based on the proposed multi-purpose tracked chassis, it is possible to create the following unified vehicles:

32 - chassis for mounting various military equipment (self-propelled guns of various calibers of tower and turretless execution);

33 - sanitary conveyor (military or civilian);

34 - mobile workshop for maintenance and repair (military or civilian);

35 - road-building modification (military or civilian);

36 - truck tractor;

37 - evacuation tractor with crane equipment;

38 - modification for work in arctic conditions;

39 - heavy duty conveyor with seven track rollers.

Claims (4)

1. Caterpillar chassis of an object of armored vehicles containing caterpillar propulsion, an individual torsion bar suspension of six track rollers with telescopic hydraulic shock absorbers mounted on balancers of two front and one rear rollers in each mover, a housing including a motion control compartment located in the front of the hull, and a motor- a transmission compartment in which the main engine is connected to the final drives via an input gear, characterized in that the length of the front of the housing is increased h the conditions for ensuring placement directly behind the motion control compartment of the engine-transmission compartment, the kinematic connection of the input gearbox and the gearboxes being located on the other side of the high-speed shaft, while the front wheels in the caterpillar drive are leading, the tensioning mechanism is aft, and the kinematic coupling of gear to the output shaft - a backup place for additional power take-off of objects of armored vehicles for various purposes. 2. The chassis according to claim 1, characterized in that the upper part of the body, located along the length from the transverse rear sheet of the engine compartment to the aft sheet, is made in the form of a removable roof with sealing along the perimeter of the joint with the side elements of the body by a gasket, for example, soft material such as rubber. 3. The chassis according to claim 1, characterized in that the movement control compartment is arranged to accommodate additional landing sites. 4. The chassis according to any one of claims 1 to 3, characterized in that the casing of the motor-transmission compartment from the transverse rear sheet to the aft sheet is configured to install a seventh pair of track rollers in the chassis, while the ratio of the track contact length to the ground to the base track is 1.65-1.68.

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