RU2595118C1 - Tunnelling machine actuator - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to mining combines and can be used during driving of mine workings mines, pits. Tunnelling machine actuator, including frame, cutting bits, electric motors, reduction gear with two drive shafts, one of which is connected with cutting bits, arranged in frame. At that, reduction gear is installed with possibility of rotation around its axis relative to frame and planetary motion of cutting bits by gearing from second drive shaft of said gearbox.

EFFECT: technical result consists in providing higher efficiency and compactness of reduction gear.

1 cl, 1 dwg

Description

The invention relates to machines used in the mining industry, in particular to roadheaders.

There are known roadheaders with drilling actuators, the drive of which is carried out by two electric motors, and the drive shafts of the gearbox are kinematically connected by a unifying shaft (Bazer Y.I. and other roadheaders. - M .: Nedra, 1974, p. 124-127) .

This design option of the executive body does not provide for a change in the rotation speed depending on the strength of the rock being destroyed.

Roadheaders are known, the executive bodies of which include a frame, a cutting crown, a gearbox, an electric motor. In well-known combines, the actuator is driven from the electric motor through the gearbox, and the change in the rotational speed of the cutting crown is achieved by switching the gearbox clutch or by interchangeable pairs of gears (Germanov V.E. and other Strelochny roadheaders.- M .: Nedra, 1978, p. 11-12, 20-21, 27).

This embodiment of the design of the gearbox leads to the fact that when reducing the speed of rotation of the cutting crown, due to the switching of the clutch, or the use of a replaceable pair of gears, the moment on the output shaft of the actuator increases and, therefore, the load on the gearbox increases.

Closest to the proposed invention in technical essence and the achieved result is a technical solution according to the patent of the Russian Federation No. 2122638, E21D 9/02.

In the executive body of a roadheader containing a frame, cutter crowns, a gearbox, the latter, according to the invention, has two drive shafts, each of which is connected to its own electric motor, and a combining shaft on which an axially movable block of two wheels is mounted on the splines however, a wheel of a smaller diameter can provide the interaction of two drive shafts with a unifying shaft, and a wheel of a larger diameter can provide only one drive shaft with a unifying shaft.

The disadvantages of this design are as follows:

1. During the destruction by the combine harvester of rocks of various strengths, the determining factor of its effective application is the productivity of the combine, which is determined by the grip area of the cutting crown. In a well-known combine, it is determined by the area of only one incisor crown, since the second, when the arrow is moved horizontally, following the first crown, is in the dead zone behind the first incisor crown and does not participate in rock destruction;

2. Irrational loading of the gearbox; increase in dimensions and metal consumption of the combine.

The technical effect of the invention is the creation of an executive body, which provides greater productivity of the combine by involving a second incisor crown in the process of rock destruction. Due to this, obtaining optimal cutting conditions, rational loading of the drive, ensuring the compactness of the gearbox, reducing its metal consumption, increasing the overall performance of the combine is achieved.

To achieve the indicated technical effect, the arrow on which the incisor crowns are mounted can turn around its axis during operation, which leads to the extension of the second incisor crown from the dead zone behind the first crown, this ensures the involvement of the second incisor crown, which in turn in the destruction of the breed, changing from the first. Moreover, the width of the strip of destruction of the face is no longer one, but both crowns doubled. Due to this, productivity can be achieved twice or more than when interacting with the breed only one incisor crown.

This solution allows you to ensure the work of the executive body on soft rocks with greater productivity of the incisor crown. At the same time, rational loading of the drive, its compactness, and metal consumption are reduced on the output shaft of the executive body. All this in general increases the overall performance of the combine.

The drawing shows a top view (longitudinal section).

The executive body consists of a frame 1, cutter crowns 2, 3, gear 4, the latter has two drive shafts 5, 6, each of which is connected to its own electric motor 7, 8. The gearbox also contains a block of two wheels 9 and 10 mounted on a unifying the shaft 11 with the possibility of axial movement on the splines, while the wheel 9 of a smaller diameter provides a kinematic connection of the drive shafts 5, 6 through gears 12, 13 with a connecting shaft 11, and the wheel 10 of a larger diameter through a gear 14 provides a kinematic connection of the drive shaft 5 with m shaft 11. The gearbox 4, Placing a boom relative to the frame 1 can rotate around the axis of the boom from the shaft 6 through gears 15, 16.

Claims (1)

The executive body of a roadheader, including a frame, cutter crowns, electric motors, a gearbox with two drive shafts, one of which is connected to the cutter crowns located in the frame, characterized in that the gearbox is mounted for rotation around its axis relative to the frame and planetary motion of the cutter crowns using a gear from the second drive shaft of the specified gearbox.

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