EA042170B1 - PLATFORM-CREPE-LIFT ON THE EXECUTIVE BODY OF THE COMBINE OF SELECTIVE ACTION - Google Patents

Description

Technical field

The invention relates to mining engineering and can be used to equip mining machines, in particular tunneling machines of selective action.

Prior Art

Known tunneling machine for mining (patent RU168978U1), including a frame with a centrally located in it a movable scraper reloader, pivotally connected to the loading table (feeder) with raking stars and side movable expanders, attached to the frame caterpillar undercarriage, rear outriggers, feeding a table designed in such a way as to move along the skeleton, a spacer support, blocks of an electro-hydraulic control system, while a full-rotary telescopic arrow-shaped executive body of selective action, rotary, longitudinally rotational, relative to the face type, is used as the executive body of the harvester, while during its operation the unsecured space of the mine working is held by a movable supporting support, with a visor of variable reach.

Known is the executive body of a mining machine (patent RU2036303C1), including an arrow with a cutting crown mounted on it, a gear with a drive installed in the rear of the boom, a support lifter hinged to the boom and interacting with the hydraulic cylinder of rotation, a mounting platform pivotally connected to the gearbox using levers, at the same time, in order to increase productivity, it is additionally equipped with two hydraulic cylinders for lifting the mounting platform, hinged housings on the gearbox, the mounting platform is installed above the gearbox drive and is pivotally connected on one side with the support hoist by means of a rigid rod, while the rods of the hydraulic cylinders for lifting the mounting platform are hinged are connected to the free part of the mounting platform, the hinge connecting the rod to the mounting platform is coaxial with the hinges for connecting the levers, and the hinged parallelogram is formed by the levers and hydraulic cylinders for lifting the mounting platform.

This design is difficult to adapt to tunneling machines with a telescopic boom of the executive body, in addition, the design of the roof support and the mounting platform is rigidly connected to the boom, which makes it difficult to accurately position the roof support at the installation site of the support; The support hoist is designed to lift only one section of the support.

Also known frame arch support from a special profile for development workings (patent RU2107819C1), including the top, racks and inter-frame connections; inter-frame connections are made from sections of a special profile and an angle between them, connected by electric welding, which are installed by inserting sections of the profile into the grooves of the profiles of the top bars and racks of the previously installed and installed frames in places fixed by bosses welded to the sides of the profile, and are additionally attached to the racks using clamps. The well-known design of the support allows you to speed up the fastening of the working by increasing the distance between the frames, because. the device of inter-frame connections ensures the transfer of the load applied to the frame to neighboring frames, increasing the bearing capacity of the support system, but this design does not allow the personnel to be constantly in the fixed space during the installation of the support.

Implementation of the invention

The objective of the invention is to create a safe method of fastening underground mine workings by means of a platform-support hoist, which is used for mounting and installing segments of a metal arched lining installed on the executive body of a tunneling machine (including a telescopic one) of selective action, and cantilever mounts forming the cantilever part of the metal arch support, allowing to ensure the continuity of the support, and therefore, the ability of personnel to constantly be under the protection of the support.

This task is solved by a platform-support hoist installed on the executive body of a mining machine (prototype - technical solution according to patent RU2036303C1), including an arrow with a cutting crown installed on it, in which, according to the proposal, the bracing lifter is made in the form of a carriage mounted on guides at the end of the main part of the boom, and a frame structure mounted on the carriage of the platform, made with the possibility of rotation relative to the carriage.

It is advisable to turn the platform relative to the carriage with a hydraulic cylinder (hydraulic jack) or two hydraulic cylinders.

In case the boom of the executive body is telescopic, and at the end of the telescopic part of the boom, it is also necessary to mount guides for the carriage, and to provide the platform with a mechanism for moving the carriage from the main part of the boom to the telescopic one. A hydraulic cylinder is also best suited as a moving mechanism. The platform-lifter is designed to accommodate a segment of the support, therefore it is advisable to equip it with electromagnets for fixing the top bars or mechanical devices for the same purpose.

This problem is also solved by elements of a metal arch support in the form of consoles, fixed on the tops of the frame arch support (prototype - technical solution according to the patent

RU2107819C1). Each console is formed by a section of a special profile, a platform and a reinforcing (power) element (any sufficiently strong profile can be used as a strength element and a console platform). Cantilever mounts are attached to the top by means of clamps.

Embodiment of the invention

The inventive platform-lifter and the console, as an element of the frame arch support, are illustrated by drawings.

In FIG. 1 schematically shows a side view of the working body of a mining machine in the version with a carriage.

In FIG. 2 schematically shows a side view of the operating element of a mining machine in the version with a movable boom segment.

In FIG. 3 schematically shows a top view of the executive body of a mining machine with a crepe-lifting platform.

In FIG. 4 shows a cross section of the top with a cantilever mount installed on it.

In FIG. 5 shows a side view (in the longitudinal direction of the working) of the top bar with cantilever mounts installed on it.

In FIG. 6 shows a top view of the top rack with cantilever mounts installed on it.

In FIG. Fig. 7 schematically shows a side view of the executive body of a mining machine with a support segment laid on the platform (version with two tops).

In FIG. 8 schematically shows the installation of a lining segment (option with two tops) in a working.

The drawings indicate the following elements:

1) carriage;

2) frame platform of the crepe lifter;

3) guide for the carriage on top of the main part of the boom of the executive body of the mining machine;

4) guide carriages on the sides of the main part of the combine boom;

5) the guide of the carriage or the movable segment of the boom on top of the telescopic part of the boom;

6) the guide of the carriage or the movable segment of the boom on the sides of the telescopic part of the boom;

7) hydraulic cylinders (hydraulic jacks), with the help of which the position of the platform is changed in relation to the boom;

8) hydraulic cylinder (hydraulic jack), with the help of which the carriage (movable segment of the boom) with the platform is moved along the harvester boom;

9) movable segment of the boom (carriage combined with the movable segment of the main part of the boom, in which the guides on the telescopic part of the boom have a more compact shape, less protruding above the surface of the telescopic part);

10) the main part of the boom of the executive body of the mining machine;

11) telescopic part of the mining machine boom;

12) crown of a mining machine;

13) top support;

14) cantilever mount, consisting of a block in the form of a section of the upper profile and a bearing element of the console, which is a stiffener with a platform (s) on top. Such elements can be SVP beams (special interchangeable profiles), rails, etc.;

15) clamps fastening the cantilever mount to the top rack in an amount sufficient to securely hold it on the top rack;

16) fixing devices for the tops, as an option for equipping the platform-support lift when carrying out inclined mine workings.

The main part 10 of the harvester boom is equipped with either a carriage 1 (Fig. 1) or a movable segment 9 (Fig. 2) installed (mounted) on the guides 3 and 4). To the carriage 1, or to the segment 9 is hinged to the front part, the platform 2 of the frame form. In addition to the movable connection, the platform is supported from the sides by hydraulic cylinders 7 mounted on the carriage 1 (or on the mobile segment 9). The base position of the carriage 1 with the platform 2 is the main part 10 of the boom. Guides 3 and 4 are located at the end of the main body 10 of the boom. At the end of the telescopic part 11 of the boom there are guides 5 and 6, where, with the retracted part 11, the carriage 1 or the mobile segment 9 moves with the platform 2 by means of a hydraulic jack 8 located on the main part 10 of the boom under the platform 2.

Platform 2 is intended for placement and subsequent mounting of the lining segment. The dimensions of platform 2 are determined within the width of the combine boom, the length is at the request of the operators, sufficient for mounting several steps of the support. Platform 2 in the form of a rectangular frame, strong enough, in terms of bearing capacity comparable to the canopies of sections of mining complexes, has a frame shape for access to the lining from below and fastening of the ties to the tops 13. Platform 2 can be equipped with electromagnets (not shown) or fixing devices 16 in the form of special profiles for fixing (holding) the tops 13 during inclined mine workings.

The first from the face is installed the top rack 13 with cantilever fastenings 14 installed on it, by means of clamps 15 (in an amount sufficient for reliable fastening of the roof, above the attachment points of the lock connections of the top rack 13 with legs), When using reinforced concrete (concrete) tightening on the console fasteners 14 lay metal girders as a base for puffing. After mounting the elements of the support, the boom rises to the installation site of the mounted support segment, the platform 2 with the support segment is brought to the place of its installation so that the extreme top 13 is aligned with the edge of the cantilever part of the previous support cycle (this ensures the continuity of the support). This will allow the staff to stay in the assigned space at all times. At the same time, at the ends of the tops 13 and on the cantilever part of the support, it is possible to form sides from a bent (more than 90 °) metal puff (zmsh), so that a fenced sector is formed, outside of which the rock mass would not spill out when it fell out from the roof.

Fixation of the puff (zmsh and reinforced concrete) on the top 13 and consoles 14 is carried out with the help of wire, or, for reinforced concrete tightening, with the help of additional support elements in the form of modified clamps attached to the top 13 and consoles 14 preventing slipping of the puffs from the top 13 and cantilever parts of the support The elements of the support in the form of metal strips securely fix the tightening on the top rails 13 and on the cantilever parts of the support.

Industrial Applicability

This mounting method requires increased precision, for which it is preferable to align the combine along the direction indicating beam using a rail attached to the combine by a bracket.

In the combine control system, it is necessary to provide for the possibility of synchronizing the change in the position of the boom and the crepe-lifting platform.

The mining technology may also include:

some advance of the upper part of the face in relation to its lower part, which will provide sufficient clearance between the elements of the combine boom and the support consoles (this will avoid damage to the consoles);

temporary installation, during long breaks in the production of tunneling, a frame under the outer console, with its dismantling when resuming work on excavation and fastening with the help of the proposed technical solutions.

It should be pointed out that some design changes of the elements are possible without changing the essence of the claimed technical solutions, due, for example, to specific generation parameters and safety requirements. For the same reason, it is possible to use additional fastening elements in the form of clamps, inter-frame connections, etc.

Segment of the support - a structure consisting of the cantilever part of the support, the top bars 13, fastened together, the puff laid on top and the fasteners that fix the puff.

The cantilever part of the support is a part of the support, consisting of 14 consoles installed on the top 13.

Claims (6)

CLAIM 1. The executive body of a mining combine, including an arrow with a crown mounted on it and a bracing hoist, characterized in that the bracing hoist is made in the form of a carriage mounted on the boom of the executive body on guides, and a frame structure platform mounted on the carriage, made with the possibility of rotation in a vertical plane regarding the carriage. 2. The executive body of the mining machine according to claim 1, characterized in that the ability to rotate the platform relative to the carriage is provided by at least one hydraulic cylinder. 3. The executive body of the mining combine according to claim 1 or 2, characterized in that the guides for the carriage are located on the main and telescopic parts of the boom, while the fastener is equipped with a mechanism for moving the carriage from the main part of the boom to the telescopic one. 4. The executive body of the mining machine according to claim 3, characterized in that a hydraulic cylinder is used as a mechanism for moving the carriage. 5. The executive body of the mining machine according to claim 1, or 2, or 4, characterized in that the platform is equipped with electromagnets for fixing at least one top bar, which is part of the lining segment to be mounted. 6. The executive body of the mining machine according to claim 1, or 2, or 4, characterized in that the platform is equipped with mechanical devices for fixing at least one upper head, which is part of the mounted lining segment.