EA042555B1 - ELEMENT OF METAL ARCH SUPPORT IN THE FORM OF A CONSOLE, FORMING THE CANSOLE PART OF THE SUPPORT, PROVIDING THE CONTINUITY OF THE SUPPORT - Google Patents

Description

SUBSTANCE: invention relates to mining engineering and can be used for equipping a metal arch support with ensuring its continuity.

Known frame arch support from a special profile for development workings (Patent RU 2107819C1), 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.

The well-known frame arch support was chosen as a prototype, since it has similar structural elements, but does not include the stage of cantilever fastening of inter-frame connections.

The objective of the invention is the creation of cantilever mounts that form the cantilever part of the metal arched lining, allowing to ensure the continuity of the lining, and therefore, the ability of personnel to constantly be under the protection of the lining.

This problem is solved by an element of a metal arch support in the form of consoles fixed on the tops of a frame arch support, while each console is formed by a segment of a special profile, a platform and a reinforcing (power) element (any sufficiently strong profile can be used as a strength element and console platform ). Cantilever mounts are attached to the top by means of clamps.

The proposed element of the metal arch support is used, preferably, to create a segment of the arch support - a structure consisting of the cantilever part of the support, the top bars 13, fastened together, laid on top of the puff and fasteners that fix the puff. The formed (assembled) segment of the metal arch support is intended for mounting the arch support in a safer way.

Since the above segment of the arch support is a massive structure, the known support hoists are not suitable for its lifting and installation. In particular, the traditional crepe lifter is intended, as a rule, for lifting only a single element of the support (see, for example, the crepe lifter disclosed in patent RU 2036303C1 - item 5 in Fig. 3).

It is advisable to install a segment of a metal arched support, including elements of a metal arched support in the form of consoles, by means of a platform-support hoist available on the executive body of a mining machine, including an arrow with a cutting crown installed on it, while the hoist should be made in the form of a carriage mounted on guides on end of the main part of the boom or in the form of a movable segment of the boom, and mounted on the carriage or movable segment of the boom platform frame structure, made with the possibility of rotation relative to the carriage or movable segment.

The rotation of the platform relative to the carriage or the mobile segment can be carried out by 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 or movable segment, and to provide the platform-mounting platform with a mechanism for moving the carriage or movable segment from the main part of the boom to the telescopic one. A hydraulic cylinder is also best suited as a moving mechanism. The crepe-lifting platform 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.

The claimed technical solution is 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 - the same, 3/4 front view.

In FIG. 6 shows a side view (in the longitudinal direction of the working) of the top bar with cantilever mounts installed on it.

In FIG. 7 shows a top view of the top rack with cantilever mounts installed on it.

In FIG. 8 shows a segment of a metal arch support (an option with two tops).

In FIG. Fig. 9 schematically shows a side view of the executive body of a mining machine with a support segment laid on the platform (an option with two tops).

- 1 042555

In FIG. 10 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 harvester 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 (a carriage combined with a 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. The crown of the 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 securing 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-lifter when carrying out inclined mine workings;

17. Tightening;

18. Metal run;

19. Coupler;

20. Modified clamp for fixing the puff;

21. Metal strip;

22. Clamp for fastening the screed.

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 (installed) on guides 3 and 4. To the carriage 1, or to the segment 9, the platform 2 is pivotally attached to the front part of the frame designs. 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 with the platform 2 moves 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 structure for access to the lining from below and fastening ties 19 to the tops 13. Platform 2 can be equipped with electromagnets (not shown) or locking devices 16 in the form of special profiles for fixing (holding) the tops 13 during inclined mine workings.

The first from the face when assembling the segment is installed the proposed element of the metal arched support: the top rack 13 with cantilever fasteners 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). reinforced concrete (reinforced concrete) puffs on cantilever fasteners 14, metal runs 18 are laid as a base for puffing 17. After mounting the elements of the lining, the boom rises to the installation site of the mounted lining segment, platform 2 with the lining segment is brought to the place of its installation so that the extreme upper 13 is aligned with the edge of the cantilevered part of the previous lining cycle (this ensures the continuity of the lining). This will allow the staff to stay in the assigned space at all times. At the same time, at the ends of the upper pits 13 and on the console 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 falls out. from the roof.

Puff fixation (zmsh and reinforced concrete) on the top racks 13 and consoles 14 is carried out using wire, or for reinforced concrete tightening with the help of additional support elements in the form of modified clamps 20, attached to the top racks 13 and consoles 14, preventing slipping of puffs 17 s top 13 and cantilever parts of the support. Support elements in the form of metal strips 21 securely fix the tightening on the top bars 13 and on the cantilever parts of the support.

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 control system of the combine, 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 provide for 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 works of the 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 22, inter-frame connections, etc.

Claims (2)

1. An element of a metal arch support, made in the form of a console mounted on the top, formed by a section of a special profile, a platform and a reinforcing element. 2. An element of a metal arch support according to claim 1, characterized in that the console is made with the possibility of fastening to the roof by means of clamps.