RU2440267C1 - Propulsor made up of hingeless caterpillar chain with high cross-country capacity trucks - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to machine building. Proposed propulsor comprises caterpillar chain link, plate with link rail, and three grousers. Plate support surface is provided with shaped recesses with stiffness ribs. Propulsor links are made from composite materials. Link rail head outer side is provided with the primary round hilled metal grousers arranged on platform outer side. Passive lock is made up of grouser edge and link rail limiting boss that makes secondary grouser. Central section of link rail has vertical through bores of vehicle drive sprocket and through connecting bores with polyurethane sleeves. Support roller guides are secured on link rail inner side. Horizontal inner temporary slots are made in link rail platform side surface to receive caterpillar chain spacers.

EFFECT: higher cross country capacity of rovers.

4 dwg

Description

The invention relates to transport engineering, in particular to caterpillar engines of multi-purpose snow and swamp machines and agricultural tractors, designed for use in off-road conditions, in bad weather and road conditions, in conditions of waterlogging, low soil bearing capacity.

Known caterpillar chain of vehicles (RF patent No. 2057045, MKI B62D 55/26, 1996), containing metal links-tracks, with eyes, a plate with treadmills, figured recesses with stiffeners, lugs, as well as spindles with one-sided metal expanders, installed alternately in different directions from its middle.

The disadvantage of this device is the increased technogenic impact of its undercarriage systems on cultivated soils, metal consumption, complexity of construction and manufacturing, short service life of used parts, in particular connecting joints.

Closest to the proposed one is the track chain of vehicles (certificate for utility model RU No. 33085 U1, MKI B62D 55/26, 2003, taken as a prototype), containing track link tracks with an odd number of eyes, a plate with treadmills, on the supporting surface of which there are curly grooves with stiffeners and at least three lugs, as well as a pin. In each of the sections of the treadmill, a cylindrical recess is made with a through hole for attaching an asphalt shoe.

The disadvantage of this device is the increased technogenic impact of its running systems on cultivated soils, the complexity of the design and manufacture of stamped parts of various thicknesses and heights, the metal consumption, the short service life of the used parts, in particular connecting joints.

An object of the invention is to increase the cross-country ability and traction balance of multi-purpose tracked snow and swamp machines and agricultural tractors while reducing the technogenic impact of their undercarriage systems on cultivated soils with a fairly simple track track circuit design, low specific force of the vehicle mover on the ground during its movement and work , ease of manufacture, high reliability, durability, ease of maintenance and operation, the possibility and the use of wheeled vehicles.

The technical solution to the problem is to create a mover - a hinge-free caterpillar chain, consisting of links of tracks with increased cross-country ability, with the aim of reducing the total weight, made of composite materials, with the possibility of installing track type extenders in the track grooves of the truck.

The task is achieved in that the links-tracks of the mover - the hinge-free track chain are made of composite materials, have a running plate, curly grooves with stiffeners, main and auxiliary lugs, central holes for driving the drive sprocket, horizontal internal technological grooves for installing track chain extenders various types, track roller guides. When using a mover - a hinge-free caterpillar chain to increase the cross-country ability of the wheel equipment, a V-shaped support rail is mounted on the inside of the running plate to drive the drive sprocket on the inside of the running plate for installation in the tread of a wheeled vehicle, the outer holes can be used to install asphalt shoes or additional grousers.

In Fig.1 shows the link-track of the mover - hinge-free caterpillar chain with horizontal extensions installed (top view), Fig.2 shows the link-track of the mover - hinge-free track chain (front view), Fig.3 shows the link-track of the mover - a hinge-free caterpillar chain (side view), Fig. 4 shows a link of a mover - a hinge-free caterpillar chain (sectional view).

The device comprises a running plate 1, in the head part of the outer side of the platform, the main metal mountain-shaped lug of circular cross section 3, a passive lock 4 formed by the edge of the lug 3 and the tide-limiter 5 of the running plate 1, which is the secondary lug, are fastened by bolting 2. In the central part of the running plate 1, vertical through holes of the drive sprocket of the vehicle 6 and through connecting holes 7 are made, with polyurethane bushings 8. On the inner side of the running plate 1, guide rollers of track rollers 11 are fastened with connecting bolts 11. In the side surface of the running plate 1 made horizontal internal technological grooves 12 for the installation of extenders 13 track chain of various types.

The device operates as follows:

When the vehicle moves along a deformable track (a terrain with low soil bearing capacity), through torque from the through holes of the drive sprocket of the vehicle 6, the main work on the movement is distributed between the main 3 and secondary 5 lugs, which, when coupled with the soil, move vehicle through rolling track chain. As the mover, the hinge-free track chain, is immersed in the weakly bearing soil layer, the parts of the expanders 13 with lugs installed in the technological grooves of the track 12 come into operation, cantilever protruding beyond the track chain, increasing the contact point of the mover and increasing the traction and coupling properties of the vehicle.

When the vehicle moves on a solid supporting surface, the movement is carried out by a drive from the vehicle’s sprocket to the through holes 6, the movement work is distributed between the main 3 and secondary 5 lugs, which, when coupled with the soil, move the vehicle through rolling the track chain. Extenders 13 with lugs installed in the technological grooves of the truck, 12 do not interact with the supporting surface, as they are technologically installed closer to the inner surface of the running field of the truck link.

The use of this invention, which has high reliability, low cost in mass production, ease of maintenance and operation, with its fairly simple design, will increase the throughput and towing properties of the vehicle. A small force of specific pressure on the soil will reduce hysteresis losses in the bearing soil layer during movement or energy-intensive work and will reduce the technogenic impact of its undercarriage systems on cultivated soils.

Claims (1)

Mover - a hinge-free caterpillar chain with off-road tracks, containing a link-track of a caterpillar chain, a plate with treadmills, on the supporting surface of which there are figured recesses with stiffeners and at least three lugs, characterized in that the link tracks of the mover are jointless caterpillar chain - made of composite materials, in the head of the running plate from the outside of the platform, the main metal mountain-shaped lugs of circular cross section are fixed, a passive lock is formed with the edge of the lug and the tide limiter of the running plate, which is the secondary lug, in the central part of the running plate there are made vertical through holes for driving the drive sprocket of the vehicle and through connecting holes with polyurethane bushings, guide rollers of track rollers are fixed on the inside of the running plate, on the side surface of the running platform the slabs are made of horizontal internal technological grooves for installing track chain extenders of various types.

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