RU2039284C1 - Tunneling machine - Google Patents

Abstract

FIELD: manufacture of mining machines. SUBSTANCE: tunneling machine has two working members of borer type with independent rotating axles. Rotating axles are located at angle to each other. Arm of one borer is disposed between two arms of the other borer. EFFECT: higher efficiency. 4 dwg

Description

 The invention relates to the mining industry, and in particular to the executive bodies of continuous combines used in the excavation of workings in the chambers.

 A continuous tunneling machine is known, containing one actuator with an axis of rotation parallel to the direction of movement of the combine [1] The disadvantage of such a combine is the small width of the passable output.

 A continuous tunneling machine is known, comprising two drilling-type actuators located in one plane with independent rotation axes [2] A disadvantage of the known construction is that with two actuators located in one plane and having independent rotation axes parallel to the direction of movement of the harvester, the distance between the centers of their rotation is not equal to the radius of the executive body, as a result of which protrusions appear in the roof and soil of the mine, to eliminate which it is necessary Dimo auxiliary application executive bodies drum or chain type.

 The aim of the invention is to increase the efficiency of the combine.

 This goal is achieved by the fact that in a harvester containing two drilling-type actuators with independent rotation axes, the rotation axes are positioned at an angle to each other.

 Figure 1 shows a General view of the harvester, side view; figure 2 is the same, a top view; figure 3 view of the executive body from the bottom; figure 4 kinematic diagram of the actuators.

 The harvester contains a running gear 1, a conveyor 2, a Berm body 3 with cutting drums 4 and electric drives 5, as well as a dual executive body consisting of three-beam drills 6 and 7 with electric drives 8 and 9. Axes 10 and 11 of rotation of drills 6 and 7 are located under angle α to each other (figure 2). The drive 8 and 9 are arranged eccentrically with respect to the rotation axes 10 and 11 of drills 6 and 7 (Fig. 2) and are kinematically connected to each other by a synchronization mechanism 12 containing bevel gears 13, 14 mounted on the shafts of electric motors 15 and 16, and a parasitic bevel gear 17 (figure 4).

 The location of the axes 10 and 11 of the drills 6 and 7 at an angle α to each other (figure 2) leads to the fact that the plane of rotation of the drills 6 and 7 will also be located at an angle to each other. This means that the chest of the face processed by drills 6 and 7 will not be in the same plane, as is the case with drills with parallel rotational axes, but in different planes (figure 2). As a result, the beam of the drill 7 (Fig. 3) is in front of the beam of the drill 6 (or vice versa), therefore, part of the cutters of the drill 6 is closed by the beam of the drill 7 (or vice versa) and does not periodically come into contact with the bottom, i.e. the number of incisors coming in contact with the face is reduced. In addition, due to the location of the axes of the drills 6 and 7 at an angle and, therefore, in different planes, during operation, the face area destroyed by the drill 7 overlaps part of the area destroyed by the drill 6 and vice versa. The location of the axes 10 and 11 at an angle makes it possible to significantly expand the boundaries of the change in the center-to-center distance l. When the axes of rotation of the drill are parallel and the drill itself is placed in one plane, the minimum distance between the centers of rotation of the drill is limited by the length of the drill blade. Therefore, a protrusion in the form of a curved triangle formed by the intersection of two circular faces from the Boers appears in the roof of the mine. When the axes 10 and 11 are located at an angle, choosing the angle α, you can set the size l at which the height of the protrusion in the roof of the mine will be minimal.

 The synchronization mechanism 12 (figure 2), kinematically connecting the output shafts of the drill drives 6 and 7 with gears 13, 14, 17, is designed to eliminate the collision of the drill 6 and 7 during operation and, in addition, allows you to arrange the rays of the drill 6 and 7 so as, for example, shown in figure 3.

 In the kinematic diagram shown in FIG. 4, a twin-motor drive is shown kinematically coupled through a synchronization mechanism. This kinematics makes it possible to use a single motor, located coaxially with the shaft on which the gear 17 is located, to drive the drills 6 and 7.

 A consequence of the application of the proposed design will be the elimination of the organ that delineates the roof of the mine and, consequently, a decrease in the complexity of manufacturing the combine, its metal consumption, as well as a reduction in energy consumption and increased reliability during operation. In addition, in front of the Berm organ in its central part (Fig. 3), the protrusion in the working soil is eliminated and free space appears. These factors should facilitate the working conditions of the berm organ by reducing ore overgrinding and reducing power consumption. The power consumed by the drill drives will also be reduced by reducing the number of incisors in contact with the face.

Claims (1)

 A DRIVING COMBINE, containing two drilling type actuators made in the form of three-beam drills with independent rotation axes mounted on the chassis, characterized in that, in order to increase work efficiency, the rotation axes of the executive bodies are located at an angle to one another, while the beam one drill is located between two beams of another drill.

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