RU2469192C1 - Duplex geovehicle - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: duplex geovehicle consists of three sections. Two front sections are mounted on load-carrying beams with drives by means of ball races with toothed rims of bevel gear. Section rotation drives are located on diaphragms that are mounted on front ends of load-carrying beams with drives. Each load-carrying beam with a drive is mounted in the guides of rear section with possibility of its retraction. A screw with a separate drive is mounted inside the load-carrying beam. On external surfaces of front rotating sections there located are screw blades with opposite winding direction. Before each blade there mounted are small actuating elements with individual drives and sleeves with screws. In the centre of diaphragms there mounted are hollow beams inside which screws with drives are mounted Flared ends and loading rotors with drives are mounted on the front side of face ends of hollow beams. Drives and actuating elements of rear section are located on its front wall. Outside the front wall: at the top and at the bottom - horizontally, and in the centre - vertically. Drag conveyor, tray and screw with a drive are located behind the front wall inside rear section.

EFFECT: increasing the strength of out-contour layer of rock mass.

5 dwg

Description

Known birotative tunneling shield unit / geohod / (application No. 2009129575/03/041190 / dated July 31, 2009. Authors: Lelyukh B.F., Aksenov V.V., Efremenkov A.B.) It is composed of three sections arranged one after another. Two front sections, counting from the bottom, are mounted on the diaphragm by means of ball epaulets. Ball epaulets are made at the same time with gears of bevel gears. Section diaphragm drives are mounted on the diaphragm. The crowns of the ball epaulets are meshed from diametrically opposite sides with the leading bevel gears of the rotation drives of the sections located on the diaphragm. The diaphragm with sections is mounted on the front end of the beam. The beam with its rear end is mounted in the guides of the rear section, preventing its rotation, but allowing its movement along the axis of the rear section. The beam has a drive associated with the drives of rotation of the sections. The beam is simultaneously a tray in which a conveyor auger with a drive is located.

On the outer surfaces of the front rotating sections are installed helical blades with the opposite direction of winding. In front of the screw blades and counter-rotation elements, small actuators with drives are mounted.

A hollow beam is mounted on the front end of the diaphragm. At the front (bottomhole) end of the hollow beam there is a bell and loading rotor with blades. On the conical bottom of the rotor there are holes G located against the sleeves of the small executive bodies. The rotor is mounted on a beam in front of the bell and is equipped with a drive connected to the main executive body. The same drive is connected to the frontal cone, which is part of the main executive body.

The disadvantage of this biotative tunneling shield unit is the significant relief of the marginal layer of the rock mass, cut by channels for screw blades and counter-rotation elements, which reduces the resistance of the marginal layer to shear. This is fraught with jamming of the unit in the face and the development of an emergency.

This biotative tunneling shield unit is taken as a prototype and analogue.

The objective of the invention is to increase the resistance of the contour layer of the rock mass to shear by reducing its indentation by channels.

This task is achieved by parallel spacing of the axes of rotation of the two front sections at a distance of 50-100 mm greater than their overall diameter (figure 1). Thus, the front sections are not located one after another, but next to each other. Hence the name - duplex. In this case, in any place of the contour layer of the massif (along the perimeter of the mine), channels for only one section will be cut. In the longitudinal channels for the counter-rotation elements (as well as in the counter-rotation elements themselves) there is no need at all, since the rear section and the entire tunnel will have an oval section overlapping the sections of two circular front sections. This ovality will also prevent rotation. The front sections are mounted on load-bearing beams by means of ball epaulets on diaphragms with drives for rotating sections in opposite directions. Ball epaulets, made at the same time with gears of bevel gears. Section rotation is synchronized. Bearing beams with their rear ends are mounted in the guides of the rear section, preventing their rotation, but allowing them to move along the axis of the rear section. Bearing beams have a drive associated with the drives of rotation of the sections. Each carrier beam is simultaneously a tray in which a conveyor auger with a drive is located.

Hollow beams are mounted on the front ends of the diaphragms. At the front (bottomhole) end of the hollow beams there are sockets and loading rotors with blades. On the conical bottom of each rotor there are holes Г located against the sleeves of the small executive bodies. The rotor is mounted on a hollow beam in front of the bell and is equipped with a drive connected to the main executive body. The same drive is connected to the frontal cone, which is part of the main executive body. The main actuators of the drum type are mounted with the possibility of rotation around their axes and around the axis of the section (figure 3).

On the rear section at the top and bottom (horizontally) and in the center (vertically), executive bodies are also mounted. They geometrically complement the cross section of two round tunnels to an oval. The rock mass, separated by the executive bodies of the front sections, by screws through the trays of hollow and load-bearing beams, is fed into the rear section, where it is connected to the rock mass separated by the executive bodies of the rear section by a scraper conveyor and removed from it by a screw equipped with a drive.

On the outer surfaces of the front rotating sections are installed helical blades, with the opposite direction of winding. In front of the screw blades are mounted small actuators with drives. The description of the duplex geohod is illustrated by drawings:

figure 1 shows a top view of a duplex geohod;

figure 2 shows a longitudinal section along aa in figure 1 of a duplex geohod along the vertical axial plane of one of the front sections and the vertical plane of the rear section;

figure 3 shows a section bB in figure 2 of a duplex geohod;

figure 4 shows a cross section DD in figure 2 of a duplex geohod;

figure 5 shows a section bb in figure 1 of a duplex geohod.

Duplex geohod consists of three sections: two front sections 1 and 2 (Fig. 1) mounted on supporting beams 3 and 4, with the possibility of rotation of sections 1 and 2 in opposite directions by means of rotation and extension drives 5 and 6 (Fig. 2) , and one rear section 7, on which the carrier beams 3 and 4 are mounted in the rails with the possibility of longitudinal movement. On the outer surfaces of the front sections 1 and 2, screw blades 8 and 9 are rigidly fixed with the opposite direction of winding, consistent with the direction of rotation of the front sections 1 and 2. In front of each blade, a small actuator 10 with a drive 11 and a screw 12 is mounted (Figs. 1, 2 ) The front sections 1 and 2 are mounted on the supporting beams 3 and 4 by means of diaphragms 13 with spherical shoulder straps 14. In the center of the diaphragms 13, hollow beams 15 are mounted (Figs. 2, 3), inside of which there are 16 screws with actuators 17, and in the supporting beams 3 and 4 of the rear section 7 - screws 18 with drives 19 (Fig. 2, 4).

At the front (bottomhole) end of the beams 15 mounted sockets 20 and loading rotors 21 with blades 22 (figure 3). The rotors 21 are connected to the rotation drives 23 mounted on the hollow beams 15 in front of the sockets 20. The drives 23 are connected to the main actuators 24 and 25, with the possibility of their rotation around the axis of the beam 15 (feed movement) and around its own axis (cutting movement). The same drives are connected to the frontal cones 26 related to the main actuators 24 and 25. In the rear section 7, a screw 27 is mounted, connected to the drive 28, on the sleeve 29.

On the frontal surface of the rear section 7 at the top and bottom - horizontally, and in the center - the executive bodies of the rear section 30, 31, 32 are vertically located (figure 5). A scraper conveyor 33 is mounted between the actuators 30, 31, 32 of the rear section and the screw 27.

Duplex geohod works as follows.

All the work of the duplex geohod is technologically divided into three operations, which first must be performed in a certain order, following this description, and later on, in accordance with the need.

The first operation: a full-duplex geohod is delivered or aggregated to a prepared site, mounted (assembled) and installed close to the chest of the face. Bearing beams 3 and 4 must be pulled into the rear section 7. Drives 23 of the main actuators 24, 25, with frontal roller cone 26, small actuators 10 of the front sections 1 and 2 with conveyor screws 12 (inside sections 1 and 2) are turned on, 16 (in hollow beams 15), 18 (in supporting beams 3 and 4) and 27 (in the rear section 7), as well as a scraper conveyor 33. Drives 5 and 6 of rotation and extension of the front sections 1 and 2, synchronized with the extension of the supporting beams, are turned on 3 and 4. Synchronization is necessary for cutting channels in a mountain massif with screw pitch over spine at a pitch of winding the helical blades 8 and 9. The first step ends when the front section 1 and 2 vrezhutsya about a quarter turn.

The rock mass separated by the executive bodies 10, 24, 25 and 26 of the front sections 1 and 2 falls down, where it is picked up by the blades 22 of the rotating loading rotor 21, it rises by them until the angle of inclination of the blades 22 exceeds the angle of friction of the rock mass on the material of the blades . Then it rolls into the bell 20 and the screws 16, 18, 27 and the scraper conveyor 33 is removed from the duplex geohod.

The second operation consists in pulling the rear section 7 to the front sections 1 and 2 until the chest of the face is touched by the executive bodies 30, 31, 32 of the rear section 7. In this case, the synchronization is turned off, the front sections 1 and 2 are stopped. The rotation and extension drives 5 and 6 operate only to pull the rear section 7 to the front sections 1 and 2. The drives of the small, main executive and executive bodies of the rear section are turned off, the drives of all the screws and the scraper conveyor are turned off.

The third operation is the normal mode of operation. All executive bodies work: 10, 24, 25, 26, 30, 31 and 32, their screws: 12, 16, 18, 27 and the scraper conveyor 33, with drives: 5, 6, 11, 17, 19, 23 and 28 , front sections 1 and 2 rotate synchronously.

The rock mass is removed from the duplex geohod in the same way as in the first operation.

Effect: a duplex geohod allows you to get an oval tunnel in the mountain range, convenient for many needs in technology and urban planning.

Only one helical groove is cut on the marginal layer and only half the circumference, and the longitudinal groove, for counter-rotation elements, is completely absent, since the counter-rotation elements themselves are absent. In addition, with the direction of rotation of the sections indicated in FIG. 1, the friction forces on the outer surfaces of the sections 1 and 2 cause upward components that reduce the friction forces from the weight of the sections. With the opposite direction of rotation of the front sections 1 and 2 with the axes of the main executive bodies, the load on the structure is significantly reduced due to the subtraction of torques, which will reduce its weight and power consumption.

Claims (1)

Duplex geohod, consisting of three sections: two front ones, counting from the bottom, mounted on bearing beams with drives by means of ball epaulets with bevel gears, meshed with driving bevel gears of section rotation drives located on the diaphragms that are mounted on the front ends load-bearing beams with drives, and each load-bearing beam with a drive is mounted in the guides of the rear section with the possibility of its extension, and a screw is mounted inside the load-bearing beam, with a separate water, while on the outer surfaces of the front rotating sections there are screw blades with the opposite direction of winding; moreover, small actuators with individual drives and sleeves with screws are mounted in front of each blade, and hollow beams are mounted in the center of the diaphragms, screws with drives are mounted inside of them, with front bumps and loading rotors with drives connected to the bottom ends of hollow beams with the main executive bodies of the front sections, and the drives and executive bodies of the rear section are located on its front wall from the outside: above and below - horizontally, and in the center - vertical However, the scraper conveyor, the tray and the auger with the drive are located behind the front wall inside the rear section.

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