RU2725194C1 - Elements of metal arched support in form of cantilevers, which form cantilever part of support, providing continuity of support - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: invention relates to mining machine building and can be used for metal arched support equipment with provision of its continuity. Element of the metal arch support is made in the form of a cantilever mounted on a top part made of a section of a special section with a welded perpendicular force element and a platform. Console can be mounted on top with the help of clamps.EFFECT: technical result of the proposed invention is creation of cantilever fasteners forming cantilever part of metal arched support, providing for continuity of support, and consequently possibility for personnel to be permanently under protection of support.1 cl, 10 dwg

Description

Elements of a metal arch lining in the form of consoles, forming the cantilever part of the lining, providing continuity of the lining.

The invention relates to mining engineering and can be used for equipment of metal arch support with ensuring its continuity.

Known frame arch support from a special profile for preparatory workings (Patent RU 2107819 C1) , including the upper, racks and interframe connections; interframe connections are made from sections of the special profile and the corner between them, connected by electric welding, which are installed by inserting the profile sections into the grooves of the profiles of the upper and struts of the previously installed and installed frames in places fixed by the bosses welded to the sides of the profile, and additionally fastened on the racks using clamps. The known design of the lining allows you to accelerate the fastening of the mine by increasing the distance between the frames, the device of interframe connections ensures the transfer of the load applied to the frame to adjacent frames, increasing the bearing capacity of the lining system, but this design does not allow personnel to be constantly in the fixed space when mounting the lining.

The well-known frame arch support is selected as a prototype, as it has similar structural elements, but does not include the stage of cantilever fixing of interframe joints.

The objective of the invention is the creation of cantilevered fixtures, forming the cantilever part of the metal arch lining, allowing to ensure the continuity of the lining, and therefore, the ability of personnel to be constantly protected by 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, each console being formed by a section of a special profile, a platform and a reinforcing (power) element (any strong enough profile can be used as a power element and a console platform ) Cantilever mounts are mounted on the upper by means of clamps.

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

Since the aforementioned segment of arch support is a massive structure, the well-known mounts are not suitable for its lifting and installation. In particular, a traditional hoist is intended, as a rule, to lift exclusively a single support element (see, for example, the hoist disclosed in patent RU2036303C1 - item 5 in Fig. 3).

It is advisable that the segment of the metal arch support, including the elements of the metal arch support in the form of consoles, be installed using the platform-hoist available on the executive body of the mining machine, including an arrow with a cutter crown mounted on it, and it is advisable to make the hoist in the form of a carriage mounted on rails on the end of the main part of the boom or in the form of a mobile segment of the boom, and mounted on the carriage or mobile segment of the boom of the platform platform frame made with the possibility of rotation relative to the carriage or mobile segment.

The rotation of the platform relative to the carriage or the movable segment can be carried out by a hydraulic cylinder (hydraulic jack) or two hydraulic cylinders.

If 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 the mobile segment, and the platform - the hoist should be equipped with a mechanism for moving the carriage or the mobile segment from the main part of the boom to the telescopic. The hydraulic cylinder is also best suited as a movement mechanism. The platform-hoist is designed to accommodate the lining segment, so it is advisable to equip it with electromagnets, for fixing the tops or with mechanical devices for the same purpose.

The claimed technical solution is illustrated by drawings.

In FIG. 1 schematically shows a side view of the executive body of a mining combine in the embodiment with a carriage.

In FIG. 2 schematically shows a side view of the executive body of a mining combine in an embodiment with a movable boom segment.

In FIG. 3 schematically shows a top view of the executive body of a mining combine with a platform-hoist.

In FIG. Figure 4 shows a cross section of an upper with a cantilever mounted on it.

In FIG. 5 is the same, front view ¾.

In FIG. Figure 6 shows a side view (in the longitudinal direction of the working) of the upper with cantilever mountings mounted on it.

In FIG. 7 shows a top view of the upper with cantilever mountings mounted on it.

In FIG. 8 shows a segment of a metal arched roof support (a variant with two tops).

In FIG. Figure 9 schematically shows a side view of the executive body of a mining combine with a lining segment laid on the platform (version with two tops)

In FIG. 10 schematically shows the installation of a lining segment (a variant with two tops) in a working out.

In the drawings, the following elements are indicated:

1. The carriage.

2. The frame platform of the support.

3. The guide for the carriage from above on the main part of the boom of the executive body of the mining combine.

4. Guide carriages on the sides of the main body of the combine boom.

5. The guide of the carriage or movable boom segment from above on the telescopic part of the boom.

6. The guide of the carriage or the movable boom segment on the sides of the telescopic 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 (the movable boom segment) is moved with the platform along the combine boom.

9. A movable boom segment (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, less protruding form above the surface of the telescopic part).

10. The main part of the boom of the executive body of a mining combine.

11. The telescopic part of the boom of a mining combine.

12. The crown of a mining combine.

13. Verkhnyak support.

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

15. Clamps fastening the cantilever mount to the top in an amount sufficient to securely hold it on the top.

16. Fixing devices for the upper platforms, as an option to equip the platform-hoist when carrying out inclined mine workings.

17. Tightening.

18. Metal run.

19. Screed.

20. A modified clamp for fixing the tightening.

21. The metal strip.

22. A collar for fastening of a coupler.

The main part 10 of the boom of the combine is equipped with either a carriage 1 (Fig. 1) or a movable segment 9 (Fig. 2), mounted (installed) on the rails 3 and 4). To the carriage 1, or to a segment 9, a platform 2 of a frame structure is pivotally attached. In addition to the movable connection, the platform is supported laterally by hydraulic cylinders 7 mounted on the carriage 1 (or on the mobile segment 9). The basic 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 part 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 movable 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 designed for placement and subsequent installation of the lining segment. The dimensions of the platform 2 are determined within the limits of the width of the boom of the combine, the length - at the request of the operators, sufficient for the installation of several steps to support. The platform 2 in the form of a rectangular frame, sufficiently strong, comparable in bearing capacity to the visors of the sections of the mining complexes, has a frame structure for access to the lining from below and fixing the screeds 19 to the tops 13. The platform 2 can be equipped with electromagnets (not shown) or fixing devices 16 in the form of special profiles for fixation (retention) of the upper 13 when conducting inclined workings.

The first from the bottom, when assembling the segment, the proposed element of the metal arch support is installed: the top 13 with the console mounts 14 mounted on it, using clamps 15 (in an amount sufficient for reliable roof fastening, above the points of attachment of the lock joints of the upper 13 with legs), When applying reinforced concrete (reinforced concrete) tightening to cantilever fastenings 14, metal girders 18 are laid as a base for tightening 17. After mounting the lining elements, the arrow rises to the installation site of the mounted lining segment, platform 2 with the lining segment is brought to its installation location so that the extreme upper 13 was combined with the edge of the cantilever part of the previous lining cycle (this ensures the continuity of the lining). This will allow personnel to remain permanently in the fixed space. At the same time, at the ends of the upper sections 13 and on the cantilever part of the lining, it is possible to form the sides from a bent (more than 90 degrees) metal tightening (zmsh), so that a fenced sector is formed, beyond which the rock mass would not wake up if it fell out of the roof.

Fixing the puffs (zmsh and reinforced concrete) on the tops 13 and consoles 14 is carried out using a wire, or, for reinforced concrete, using additional support elements in the form of modified clamps 20 mounted on the tops 13 and consoles 14 preventing the puffs from sliding 17 from the tops 13 and the cantilever parts of the lining The support elements in the form of metal strips 21 provide a reliable fixation of the tightening on the tops 13 and on the console parts of the lining.

This method of attachment requires increased accuracy, for which it is preferable to set the combine along the direction indicating beam with the help of a rail attached to the combine by the 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 platform-hoist ..

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 boom of the combine and the consoles of the lining (this will avoid damage to the consoles);

- temporary installation, with long interruptions in the production of tunneling, the frame under the extreme console, with its dismantling when resuming work on mining and fastening using the proposed technical solutions.

It should be noted that some structural changes of elements are possible, without changing the essence of the claimed technical solutions, due, for example, to specific production parameters and safety requirements. For the same reason, it is possible to use additional fastening elements in the form of clamps 22, interframe joints, etc.

Claims (2)

1. An element of a metal arch support in the form of a console mounted on the top, made of a section of a special profile with a power element welded perpendicular to the platform. 2. An element of a metal arch support according to claim 1, characterized in that the console is mounted on the upper by means of clamps.

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