SU1260518A2 - Working member of entry-driving machine - Google Patents

Description

The invention relates to mining technology, in particular to tunneling machines equipped with jib-type actuators, and is an improvement of the executive body of the tunneling machine according to the author. St. No. 1116153.

The aim of the invention is to increase productivity by installing several incisors in each cutting line, evenly spaced around the axis of rotation of the corresponding crown in the quantity taken constant for all the crown cutting lines.

FIG. 1 shows the proposed executive body; in fig. 2 - the same, section along the axis of rotation of the crowns; in fig. 3 - executive body; in fig. 4 is a section A-A in FIG. 3; in fig. 5 - scanning of the side surfaces of the crowns in the working position on the actuator (with mutual rotation of the crowns by 90 °); in fig. 6 - roadheader, general view.

The tunneling machine contains executive body 1, chassis 2, frame 3, loading body 4 and conveyor 5. Executive body 1 includes boom 6, on opposite sides of which are transverse cutting crowns 7, the rotation axes 8 of which are located in one plane and intersect each other at point 9. Crowns are equipped with rock cutting tools - cutters 10, mounted on the housings 11 (Fig. 2).

The adjacent ends of the bodies are formed by bevels 12, the extreme points 13 and 14 of which are respectively at the maximum and minimum distances from the adjacent planes of 15 crowns.

The crowns 7 are mounted on shafts 16 placed on bearings 17 in support bodies 13 fixed to boom 6. On shafts 16 there are also bevel gears 19 which engage with bevel gears 20 mounted on a common shaft 21 placed on bearings 17 in the boom 6. On the same shaft 21 there is a spur gear 22, which meshes with a parasitic gear wheel 23 mounted on the axis 24 and, in turn, meshes with the spur gear 25 of the gearbox arrows 6 (not according to azan).

The location of the cutting edges of the incisors is shown by lines 26 (Fig. 1). Adjacent planes 15 of the crowns are perpendicularly rotated to the axis 8 of rotation through the axially extreme edges of the incisors 10 and coincide with the paths of these edges, which intersect each other at points 27, from which formation of the rear pillar 28 is possible in the direction of the arrow 6 horizontal horizontal lines). The area free from the formation of the pillar, has a depth I

Adjacent lower ends of the crowns are formed by several (for example, two) bevels 12 ((Fig. 3) uniformly arranged around the axis of the crown. In this case, uniform sections are arranged in sections through the corona bodies between their extreme points perpendicular to the axis of rotation of the crowns the elements are arcs 29 (Fig. 4). Moreover, in each cutting line 30, two cutters 10 are installed.

The executive body works as follows.

With the help of the undercarriage, the combine is fed to the face together with the boom 1 raised to the top position. In this case, the crowns 7 rotate around their axes 8 and crash into the face to a depth of N.

Then, the boom 1, together with the rotating crowns 7, is lowered, destroying the bottom. The rotation from the gear wheel 25 through the parasitic gear wheel 23 is transmitted to the cylindrical gear wheel 22 and at the same time the conical wheels 20 fixed to the shaft 21 at the same time as the latter. The conical wheels 19 are simultaneously rotated and the cutting crowns 7 fixed to the shafts 16.

The crowns 7 rotate synchronously. In this case, the kinematic connection between them is carried out only by the gears without any interaction of their bodies.

During the operation of the crowns, the edges of the incisors 10, which are extreme in the direction of the axis of the boom, describe trajectories located in adjacent planes 15 and intersecting at points 27. The formation of the rear pillar 28 is possible only when the depth of cut exceeds the value of I.

In each cutting line 30, two cutters 10 are installed (Fig. 5), as a result of which the productivity increases, since during one revolution of the crowns the volume of the rock mass is 2 times greater than during the operation of the prototype.

With a further increase in the number of incisors in the cutting line and the number of bevels on the adjacent ends of crowns, the performance of the proposed executive body increases in proportion to the number of incisors in the cutting line.

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Compiled by: fears

Editor I. RybchenkoTehred I. VeresKorrektor A. Zimokosov

Order 5202/28 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, 4/5, Raushsk nab.

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

EXECUTIVE BODY OF THE DRIVING MACHINE by ed. St. No. 1116153, characterized in that, in order to increase productivity by installing in each cutting line several cutters evenly spaced around the axis of rotation of the corresponding crown, in an amount that is assumed constant for all cutting lines, at the adjacent lower ends of the bodies of each crown additional bevels evenly spaced around the axis of rotation of the corresponding crown. Fi, g. 1