RU2490158C2 - K-like carriage of caterpillar vehicle - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to automotive industry and may be used in running gear of, say, tractor, bulldozer or prime mover. K-like carriage represents a welded structure made up of two L-like supports consisting of spaced apart side frames 1, 2 and 3, 4. Said side frames are interconnected by crossbars 6 composed of cylinders or tubes. Side frames 1, 2 and 3, 4 are connected by crossbars 7 at their lower part. Said crossbars 7 are shaped to parallelepiped, clip-like clevises being attached thereto to make end limiters. The latter prevent slippage of caterpillar chain at vehicle turns. Aforesaid supports have bottom hole to receive rocker axle and top hole to receive axle coupled with trolley frame.

EFFECT: perfected design, decreased metal input.

3 cl, 3 dwg

Description

The invention relates to transport engineering and can be used in the chassis of such vehicles as a tractor, bulldozer or tractor.

Known welded K-shaped carriages of a caterpillar vehicle, containing two supports, interconnected by a spacer by welding and equipped with bottom end stops that prevent the track from jumping off when the vehicle is turned. Two holes are made on each of the supports, the lower hole is intended for the beam, the upper - for the axis associated with the frame of the undercarriage. In particular, such a carriage is used by DST-Ural LLC in the manufactured tracked vehicles (see TM10 Chassis / Description TM10 / DST on the Internet at http://tm10.ru/description/running-gear/). Carriage supports are made by plasma cutting of thick steel sheet. On the one hand, it is difficult to maintain the configuration of the part, because When cutting thick sheets of steel, a large amount of heat is generated, which leads to a distortion of its shape, i.e. manufacturing inaccuracies. On the other hand, the manufacture of supports from plate steel consumes a large amount of metal.

The disadvantages of the known K-shaped carriage is the inaccuracy of manufacture and increased metal consumption.

The above K-shaped carriage of a tracked vehicle is the closest analogue in essential features and the achieved effect to the claimed device.

The task of the invention is to increase the accuracy of manufacturing the design of the device.

The technical result consists in eliminating defects in the manufacture of the carriage and reducing the metal consumption.

This task is achieved by the fact that in the known K-shaped carriage of a tracked vehicle, which is a welded structure of two L-shaped supports, spacers and a base plate between them, and the supports are equipped with bottom end stops that prevent the track from jumping off when the vehicle is turned, and have a lower hole for the axis of the rocker arm and upper for the axis associated with the frame of the trolley, according to the invention, each support is made in the form of spaced apart sides, rigidly fastened cross members ami.

In the K-shaped carriage, in the upper and middle part of the supports, the cross-members have the form of either cylinders or tubes, the ends of which are fixed in the holes made in the sidewalls, and a cross-shaped cross-section is installed in the lower part of the support for fastening the end stop.

In the K-shaped carriage, reinforcing plates rigidly connected with them are provided on the outside of the side walls of the support, provided with holes coaxial with the upper opening of the support.

In the K-shaped carriage around the lower hole on the outer side of the support, a protective ring is rigidly connected with it.

Studies conducted on the sources of patent and scientific and technical information have shown that the claimed K-shaped carriage of a tracked vehicle is unknown and does not follow explicitly from the studied prior art, i.e. meets the criteria of "novelty" and "inventive step".

The proposed device can be manufactured in industrial conditions of workshops of large and medium-sized factories using modern robotics, as well as standard equipment, which is produced by both domestic and foreign industry.

Therefore, the claimed device meets the criterion of "industrial applicability".

The proposed set of essential features gives the claimed device new properties that allow you to solve the problem.

The implementation of the supports in the form of spaced apart sidewalls, rigidly fastened with cross members, allows the use of sheet steel. Thin sheets are better cut, so it’s easier to maintain dimensional accuracy. If "waves" are formed when cutting sheet steel, then such a sidewall can be straightened using conductive devices, which cannot be achieved when working with plate steel. In the manufacture of the "hollow" support, metal is saved, in addition, the amount of metal waste is reduced due to the accuracy of the manufacture of sidewalls.

The proposed caterpillar vehicle carriage is illustrated by drawings, which are presented on:

Figure 1 - isometric view of the carriage;

Figure 2 is a front view of the carriage with a breakout along the tubular cross member;

Figure 3 - section aa Figure 2.

The inventive K-shaped carriage contains two L-shaped supports (not shown in the drawing), respectively, made of two sidewalls 1, 2 and 3, 4, interconnected by a support with five cross-pieces in the form of either cylinders or tubes 5. The ends of the tubes 5 fixed in the holes 6 made in the sidewalls 1, 2, 3,4. The sides 1, 2 and 3, 4 of the supports from below are connected by welding cross members 7 in the form of a parallelepiped, to which end stops are attached in the form of brackets 8, which prevent the track from jumping off when turning the vehicle. Holes 9 are made on the protruding part of the cross members 7 outside the support and are provided with bolts 8. Bolt 10 mounted vertically and welded laterally to the sides 2, 4 provides the geometry of the carriage. The base plate 11, mounted horizontally on the spacer 10, connects by welding the sidewalls 2, 4 into a single carriage design. To ensure the rigidity of the carriage, two stiffening ribs 12 are provided in the form of strips, mounted on both sides of the strut 10 at an angle both with respect to it and with respect to the base plate 11. With their long lower side, the stiffening ribs 12 are welded to the strut 10, and the long top the sides are welded from below to the base plate 11. The ends of the stiffeners 12 are welded to the sidewalls 2 and 4. Outside of the sidewalls 1, 3, reinforcing plates 13 are rigidly connected with them, and outside of the sidewalls 2, 4 reinforcing plates are rigidly connected with them 14, which are welded to the base plate 11. Reinforcing pads 13, 14 are provided with holes 15, coaxial with the upper hole (not shown in the drawing) of the support. Around the lower hole (not shown in the diagram) on the outer sides 1, 3 of the support, protective rings 16 are rigidly connected with them. When installing the beam axis, washers 17 are inserted into these rings.

The proposed K-shaped carriage of a tracked vehicle is used as follows.

The torque from the drive shaft (not shown in the diagram) of the power transmission of the tracked vehicle causes the drive gear to rotate (not shown in the diagram). In turn, it involves the caterpillar chain in the rotational movement, thereby driving the tractor. The chain rotates around the caterpillar carriage, the structure of which includes K-shaped carriages.

The claimed invention has several advantages:

- accuracy of the details of the carriage;

- manufacturability of manufacture and assembly;

- metal saving;

- reliability in operation;

- extended service life.

Claims (3)

1. K-shaped carriage of a tracked vehicle, which is a welded structure of two L-shaped supports, spacers and a base plate between them, and the supports are equipped with bottom end stops that prevent the track from slipping when the vehicle is turning, and have a lower hole for the beam and the upper - under the axis associated with the frame of the trolley, characterized in that each support is made in the form of spaced sides, rigidly fastened with cross-pieces, while in the upper and middle parts of the supports The holes are in the form of either cylinders or tubes, the ends of which are fixed in the holes made in the sidewalls, and in the lower part of the support a parallelepiped-shaped cross member is installed for fixing the end stop. 2. The K-shaped carriage according to claim 1, characterized in that reinforcing plates rigidly connected with them are provided outside the side of the support, provided with holes coaxial with the upper opening of the support. 3. The K-shaped carriage according to claim 1, characterized in that a protective ring is rigidly connected with it around the lower hole on the outer side of the support.

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