Timber collapsible prop and method of its application

FIELD: mining.

SUBSTANCE: present invention relates to a collapsible prop of mine timber. The proposed collapsible prop comprises a first metal pipe extending from the base of mine opening, having a first part with a smooth first outer diameter and a second part with a second outer diameter. And the second part comprises at least one metal roller welded to the first part, and a metal ring welded to the first part. The height of the second part from the first is greater than inner diameter of the second pipe by at least 0.15 inches (4 mm). The yield limit of the first pipe is greater than the yield limit of the second pipe. The second metal pipe is located near the first part and extends to the roof of the mine opening, and when the second pipe receives a load from the roof of mine opening, the second part deforms the second pipe and expands the second pipe, creating resistance to the load from the roof of mine opening.

EFFECT: method of creation of timber of the roof of mine opening and construction method of collapsible mine prop is proposed.

18 cl, 15 dwg

 

The technical FIELD of the INVENTION

The present invention relates to a pliable rack mine roof support having a first section with a first outer diameter and a second section with a second outer diameter that creates opposition to the second stand pipe when the second trumpet carries the load from the roof of the mine working (when used in this document, the reference to "the present invention" or "invention" which refers to examples of implementation options and not necessarily to each option, the exercise concluded in the attached claims. More specifically, the present invention relates to a pliable rack mine roof support having a first section with a first outer diameter and a second section with a second outer diameter that creates opposition to the second stand pipe when the second trumpet carries the load from the roof of the excavation, where the second section is a welded bead or ring.

BACKGROUND of the INVENTION

This section provides information on various aspects of technique that may be relevant to various aspects of the present invention. The following review provides information for a better understanding of the present invention. Accordingly, this information should be understood in this sense, not as a conclusion on the level of the local equipment.

Mining is very useful the ability of the lining to work in conditions of handling, while maintaining strength in the extraction of coal and metal ores, and the methods of extraction of the mined materials create an environment with high vertical and horizontal stresses and with a tendency to closure of the developed faces and ways of accessing them. In the past, used a different design based on wood, steel and concrete to create a lining in this environment. The present invention overcomes some of the drawbacks of modern technology with the use of elongated steel lining.

The INVENTION

The present invention relates to a pliable rack supports for mining. Hour contains the first metal pipe that goes from the base of the excavation having a first section with a first outer diameter and a second section with a second outer diameter. Hour contains the second metal pipe located near the first section and passing to the roof of the excavation, when the second trumpet takes the load from the roof of the mine workings, the second section deforms the second pipe and extends the second pipe, creating opposition to the load from the roof of the excavation.

The present invention relates to a method of creating lining of the roof of the mountains, the th generation. The method comprises the steps of installation pliable hours in the mine workings so that the first metal stand pipe runs from the base of the excavation, and the second metal stand pipe extends from the first pipe to the roof of a mine working, the step of carrying the loads from the roof of the excavation with the help of the second pipe and the step of moving the second pipe under load against the counter of the second section of the first pipe passing from the first section of the first pipe, which deforms the second pipe.

The present invention relates to a method of construction malleable shoring for excavation. The method comprises the steps of draping the lower end of the second metal pipe at the upper end of the first metal pipe and the step of moving the lower end of the second tube against the second section of the first pipe, which passes from the first section of the first pipe.

A BRIEF DESCRIPTION of SEVERAL VIEWS of the DRAWINGS

On the accompanying drawings is shown the preferred embodiment of the invention and the preferred methods of application of the invention in practice.

Figure 1 shows a pliant hour of the present invention.

Figure 2 shows pliable hour of the present invention, the deformed under load.

Figure 3 shows the stand with an adjustable height.

Figure 4 shows hour after which velichenie its height.

Figure 5 shows the hour after increasing its height and the deformed under load.

Figure 6 shows a pliant hour with welded rollers.

7 shows pliable hour with welded ring.

On Figa-8C shows a side view, top view and cross section of the second section of the first pipe.

Figure 9 shows the first pipe with two welded rings with wedge-shaped.

On Figa, B, and C shows a side view, top view and cross section of the ring.

Figure 11 shows an example of the carrying capacity of the sample with multiple wedges shown in figure 10.

DETAILED description of the INVENTION

In the drawings, in which similar positions correspond to similar or identical parts in the several views and, in particular, on 6 and 7 shown pliable hour 10 shoring for excavation. Rack 10 includes a first metal pipe going from the sole 34 of the mine, with the first section 14 with a first outer diameter and a second section 16 with the second outer diameter. Rack 10 includes a second metal pipe located near the first section 14 and passing to the roof 36 of excavation. When the second pipe 18 carries the load from the roof 36 of excavation, the second section 16 deforms the second tube 18 and extends a second pipe 18, creating opposition to the load of the roof 36 mining

The second section 16 may include at least one metal roller 20, is welded to the first section 14, or a metal ring 22, is welded to the first section 14. The height of the second leg 16 of the first section 14 is at least 0.15 inch (4 mm) is larger than the inner diameter of the second pipe 18. The yield strength of the first pipe 12 may be greater than the yield strength of the second pipe 18. The first pipe 12 may have a top end 38 and the second section 16 is located at a distance of about 3 inches (76 mm) to 9 inches (229 mm) from the upper end 38 of the first pipe 12.

The second tube 18 may have a lower end 40, which is placed on the upper end 38 of the first pipe 12 and extends socket outward to facilitate installation of the second pipe 18 to the first pipe 12. The length of the first pipe 12 may be H minus X, where H is the height of the excavation, and X has a value between 3 inches (76 mm) and 20 inches (508 mm). Hour 10 may include at least one retaining bracket 24 welded to the first pipe 12 and the second pipe 18 for holding together the first and second pipes 12, 18. The rack 10 may include a metal top plate 46 attached to the upper end 42 of the second pipe 18, and the metal lining 48 under the rack, attached to the lower end 44 of the first pipe 12. The rack 10 may include a handle 26 attached to the first t is the UBA 12. The ring 22 of the second segment 16 may have a wedge shape shown in Fig.9.

The first pipe 12 may have a third section 28 having a third outer diameter that is located below the second section 16 and having a height of the first section 14 in excess of the height of the second diameter of the first section 14, which creates a gradual increase in resistance lining on numerous stages in the deformation of the metal of the second pipe 18. The third section 28 may include at least a roller 20 having a height that is greater than the height of the roller 20 of the second leg 16. The third section 28 may include a second ring 50 having a height that is greater than the height of the ring 22 of the second segment 16.

The rack 10 may include a container 30 in which is installed the first pipe 12, which provides height adjustment, which raised the first pipe 12 from the sole output, as shown in Fig.3-5. The container 30 may include sand 32, which is used for height adjustment of the first pipe 12.

The present invention relates to a method for creating a roof lining 36 of excavation. The method comprises the steps of installation pliable rack 10 in the mine workings so that the first metal stand pipe 10 passes from the sole 34 of excavation, and the second metal stand pipe 10 extends from the first pipe 12 to the roof 36 of the mountain expressed ODI, the step of carrying the loads from the roof 36 of excavation of the second pipe 18, the step of moving the second pipe 18 under load against the counter of the second leg 16 of the first pipe 12, which extends from the first section 14 of the first pipe 12, which deforms the second pipe 18. The method may include the step of adjusting the length of the rack 10.

The present invention relates to a method of construction malleable uprights 10. The method comprises the steps of draping the lower end 40 of the second metal pipe at the upper end 38 of the first metal pipe, the step of moving the lower end 40 of the second tube 18 against the second leg 16 of the first pipe 12, which extends from the first section 14 of the first pipe 12.

The method may include the step of welding the second section 16 to the first section 14. The method may include the step of welding the retaining strap 24 to the first tube 12 and second tube 18 for holding together the first and second slats 24. The method may include the step of creating a widening out of the socket at the lower end 40 of the second pipe 18 to facilitate draping of the second pipe 18 to the first pipe 12.

In relation to the operation of the invention, two alternative design options. Both include rack 10 comprising at least two steel pipes, the first of which has an outer diameter that is smaller than the inner is of emetra the second pipe 18. It provides the type of landing with extension, in which there is no interference fit between the first and second pipes 12, 18. Pipes of this ratio of the diameters must not create a support is not yet created a second site or mechanism of tension", causing resistance to the free passage of the first pipe 12 through the second pipe 18.

Describe two designs to create a mechanism of tension".

In the first design create one or more welded rollers 20 on the first pipe 12 so that the working outer diameter welded rollers 20 creates an interference fit with the inner diameter of the second pipe 18. This tension should lead to resistance to the free passage of the first pipe 12 through the second pipe and should lead to friction and scraper action welded rollers 20 on the surface of the second pipe 18 and may depend on the mechanical properties of the second pipe 18, causing the concentric expansion of the second pipe 18 to accommodate the working diameter of the inner pipe and welded roller or rollers 20. These two pipes that are installed in contact with the two opposite surfaces of rocks (such as the base and the roof of the excavation)to provide resistance to the joining surfaces of the rocks.

The second design involves the use of a ring with machine processing or cast tapering on onus, or spherical made of steel, or malleable iron. The ring is welded to the first pipe 12, and the combined diameter of the first pipe 12 and the ring must create a tension between the working outer diameter and the inner diameter of the second pipe 18. As in the first construction, the tension must create friction and scraper action and possible concentric expansion of the second pipe 18. In this case, as in the first design, when installed between two surfaces of rocks should be created resistance to the closing.

Two pipes with the tensioning mechanism assembled to create an effective counter-closure after fabrication. The first pipe 12 with a tensioning mechanism mounted to the second tube 18 at the time of manufacture, thereby creating a counter-closing immediately when installed in the opening of the mine workings. It can be made accurately member in the aperture of excavation or fixed on the place of wooden or steel swivel wedges 52 during installation, as shown in Fig.7. if the size of the aperture of excavation not exactly correspond to the length made the joint pipe.

Figure 1 shows a pliant hour 10 of the present invention.

Figure 2 shows pliable hour 10 of the present invention, the deformed under load.

Figure 2 shows an example of deformats the lining and the resistance to closing of the opening of excavation.

Alternatively, the two pipes can be connected in adjustable installation mechanism, which allows adapting pipes to changing the size of the opening of excavation. One such configuration would connect the two pipes in the device, currently supplied by Strata Products LLC under the name SandProp™. SandProp™ uses the mechanism of regulation which are elongated supports adaptation to different sizes of the opening of excavation. SandProp™, in General, is not pliable lining, which reaches carrying capacity should bend under the action of clamping the two surfaces of rocks with reduction of its load capacity.

To enable the ability pliability of the described structures, it is necessary to use the upper (smaller diameter) pipe SandProp™, as a first smaller diameter pipe, to which should be attached or welded to the roller 20, or weld ring 22 with machine processing or cast. The second tube 18 should be planted firmly on the first pipe 12 during manufacture. The final product is the lining, with resistance to closing the rocks are set during manufacturing and an adjustable element for adaptation to changing the size of the opening of excavation. The upper or first pipe 12 has a hole in the base is for the material, such as sand, filling the first pipe for output and fill the bottom of the pipe rack SandProp™, here, the third pipe. The first pipe is raised to the desired height with the sand out of the hole and fills the lower part of the third pipe. The sand caught in the third pipe, serves as the Foundation raised for the first pipe. In this embodiment, the third tube should be even stronger than the first pipe.

Figure 3 shows the stand 10 having an adjustable height.

Figure 4 shows a 10 hour after increasing its height.

Figure 5 shows the 10 hour after increasing its height and deformation under load.

Figure 6 shows a pliant hour 10 welded to the rollers 20.

7 shows pliable hour 10 welded to the ring 22.

Pipe structural steel is the preferred material for construction of the rack 10. When used as welded roller 20 and ring 22 should use two pipes of diameters and strengths.

The first pipe 12, for example, must be thin and to have an outer diameter of about of 2.875” (73 mm) and inner diameter of 2.375” (60 mm). The yield strength of the steel used in the manufacture of pipe should be from about 60,000 lb/in2(4200 kg/cm2) up to 100,000 lb/in2(7000 kg/cm2and preferably about 80,000 lbs/inch2(5600 kg/cm2 to create high resistance to bending under load.

The second pipe 18 must have an outer diameter 3,500” (89 mm) and inner diameter 3,000” (76 mm). The yield strength of the steel used in the manufacture of these thin-walled tubes should be from about 35000 lb/in2(2450 kg/cm2) to 75,000 lb/in2(5250 kg/cm2and preferably of about 55,000 lbs/inch2(3850 kg/cm2to maintain tension on the circumference of the perimeter under load transmitted through the mechanism of a tension. The yield strength of the second pipe must be less than the yield strength of the first pipe. There is a ratio of the diameters of which do not create tension between the first tube 12 and second tube 18.

The wall thickness of each tube is about 0.5 inch (13 mm), but may be 0.3 and 0.7 inch (8 and 18 mm)and wall thickness of pipes is not necessarily the same, and depends on the strength and the necessary relation between the pipes.

The length of the respective pipes used depends on the height of the opening of excavation, where the shield should be installed, and the magnitude of the clamping force used in the design of supports. This issue is discussed below.

Design with welded rollers 20.

One preferred configuration design with welded rollers 20 shown in Fig.6. On the segment length of between three inches (76 mm) is nine inches (229 mm) and preferably about six inches (152 mm) from one end of the first pipe 12 is installed welded rollers 20 around the entire circumference of the pipe perimeter. Usually use arc welding metal inert gas to create this welded roller 20. The thickness of the cushion 20 in this embodiment should be 0,600” (15 mm), thus creating the outer diameter of the pipe with welded rollers 20 average of 3,475” (88 mm). This clearly set the dimensions to fit between the first and second pipes 12, 18.

For Assembly of the device one end of the second pipe 18 should be extended to flare out using a hardened mandrel diameter up to 3,500” (89 mm) for receiving the first pipe 12 is welded to the platen 20. After Assembly is diametrically opposite to the "locking bar" should be welded in place on the second pipe 18 for holding the two tubes bonded together into one unit. The handle 26 must also be added in the merged unit to ensure the changes. Steel top plate 46 and the lining 48 under the rack must be welded to the respective ends of the assembled device. Top plate 46 and the lining 48 under the rack should be made of A36 steel and have a thickness of 0.250” (6 mm) and the minimum size of the square side of 4.00” (102 mm). Top plate 46 and the lining 48 distribute the load borne by the support, the roof 36 of excavation and the sole when the unit is installed in place and functioning.

For certain application and use of the Oia simplest form lining, shown in figure 1, the corresponding segments of a length of pipe shall be determined as follows: the height of the excavation has the value H, and you must create lining with acceptable closure of the opening to 12” (305 mm). The maximum length of the first pipe 12 then must be H-12”(305 mm). Because the support is pre-assembled, which takes 6” (152 mm) length of the second pipe 18, the length 18” (457 mm) must be used to ensure closure 12” (305 mm). In a variant of the practical application of the length of the first pipe 12 must be less than the maximum approximately 4”-6” (102-152 mm) for easier installation in the desired position and the subsequent fixing of wooden linings and wedges that should be used to secure the lining in place. Figure 2 shows the support 1 after the perception of closing.

Alternatively, one welded roller 20 many welded rollers 20 can be mounted on the first pipe 12, as shown in Fig.6. Many welded rollers 20 must be spaced from each other at a distance of about an inch (25 mm), and rollers 20 should have a different thickness to create a gradual increase in resistance lining with multiple stages of deformation processing of metal of the second pipe 18. Many welded rollers 20 can be distributed across a larger segment of the first length is ruby 12, such as starting at 8” (203 mm) from one end, but not at 6” (152 mm). The device socket and adequate depth and shape of the socket of the second pipe 18 should serve to accommodate an additional line of length welded rollers for Assembly. Installation and use supports with many welded rollers 20 should be similar to those described above.

Design with ring 22 with machine processing.

In the second preferred configuration is welded to the rollers 20 are replaced by rings with machine processing. Testing shows that this configuration is more reliable, because the surface finish with rings with machine processing is better managed, and the carrying capacity is more uniform. Rings can have various forms, which can be effective in creating a mechanism of tension and, thus, the resistance of the lining. One simple form may be semicircular in cross section, the form is similar to form welded roller shown in Fig.7. Many of these rings can also be used in much the same way many welded rollers 20. Rings should have a gradually increasing radial dimensions, which should lead to deformation of the second pipe 18 in several stages. These rings are welded to the first pipe 12 to secure their place.

Ring wedge shape has the most consistent performance. For the manufacture of wedge rings used tube type A513, drawn on opravujem the camp. Nominal pipe sizes are outer diameter of 3.5”(89 mm) and wall thickness of the 0.375” (10 mm). On figa-8C shows a side view, top view and cross-section of a finished part. After machining the wedge ring is heat treated and quenched to obtain the final hardness 30-35 scale Cromwell. The process of heat treatment necessary to prevent sudrania wedge rings and added durability to ensure a consistent geometry of the ring 22 at a distance of deformation of the lining. The ring 22 is then welded into position on the first pipe 12. In General, base wedge-shaped ring 22 should be placed in 6” (152 mm) from one end of the first pipe 12.

On figa-8C shows a side view, top view and cross section of the second leg 16 of the first pipe 12.

Like other constructive versions multiple V-rings can be used, where each ring 22 has a slightly larger dimensions, as shown in Fig.9. Also practical for manufacturing is the production of V-rings 22 with several gradually increasing wedge-shaped forms, it was found that the machining processes and the orcs are accelerated in one embodiment, rings with several wedge-shaped surfaces. Such a ring on figa-10C shown in the side view, top view and in cross section.

On figa, B, and C shows a side view, top view and cross section of the ring 22.

Figure 11 shows an example of the carrying capacity for the structural design of the ring with several wedge-shaped plots, shown in figure 10.

In another embodiment, the second section 16 is located on the inner surface of the first pipe 12 and the second pipe 18 is inserted inside the first pipe 12. In other alternative embodiments, the implementation of the second tube 18 may have a second area 16 on its outer surface, and a second pipe 18 is inserted into the first pipe 12 or the second section 16 is located on the inner surface of the second pipe 18, and the second pipe 18 is placed on the first pipe 12. In both cases, the first pipe 12 has a yield stress less than the yield strength of the second pipe 18. Essentially, all other of the symptoms described should be applicable.

Although the invention is described in detail in the above embodiments, the implementation for illustrative purposes, it should be understood that such details are given only for specified purposes, and its changes can be performed by a specialist in the art without departing from the essence and scope of the invention defined by the following claims.

1. Pliable hour lining for the priori generation, containing the first metal pipe that goes from the base of the excavation having a first section with a smooth first outer diameter and a second section with a second outer diameter, while the second section contains at least one metal roller is welded to the first section, or a metal ring welded to the first section, and the height of the second section from the first section is at least 0.15 inch (4 mm) larger than the inner diameter of the second pipe, and the yield strength of the first pipe more than the yield strength of the second pipe; and a second metal tube having a smooth inner diameter, located about the first section and passing to the roof of the excavation, when the second trumpet takes the load from the roof of the mine workings, the second pipe slides down on top of the first pipe and the second section may deform the second pipe and to extend the second pipe, creating the resistance of the load from the roof of the excavation.

2. Hour according to claim 1, in which the first pipe has an upper end and a second site is located at a distance of about 3 inches (76 mm) to 9 inches (229 mm) to the upper end of the first pipe.

3. Hour according to claim 2, in which the second pipe has a lower end mounted on the upper end of the first pipe and extended socket outward to facilitate installation of the Torah pipe to the first pipe.

4. Hour according to claim 3, in which the length of the first pipe is N minus X, where H is the height of the excavation, and X is from 3 inches (76 mm) to 20 inches (508 mm).

5. Hour according to claim 4, containing at least one retaining bracket welded to the first pipe and the second pipe to hold the first and second pipes together.

6. Hour according to claim 5, comprising a metal top plate attached to the upper end of the second pipe, and the metal pad under the rack, attached to the lower end of the first pipe.

7. Hour according to claim 6, containing a handle attached to the first pipe.

8. Hour according to claim 7, in which the ring of the second section is wedge-shaped.

9. Hour according to claim 7, in which the first pipe has a third section with a third outer diameter that is located below the second section, which creates a gradual increase in resistance lining through many stages of processing of the second metal pipe.

10. Hour according to claim 9, in which the third phase contains at least platen having a height exceeding the height of the roller of the second section.

11. Hour according to claim 9, in which the third section includes a second ring having a height exceeding the height of the ring of the second section.

12. Hour according to claim 7, containing the container in which you installed the first pipe that provides height adjustment of the first pipe from the floor.

13. Hour indicated in paragraph 12, the cat is Roy container contains sand, which level is used to adjust the height of the first pipe.

14. The method for performing the lining of the roof of excavation, containing the following steps:
installation pliable hours in the mine workings so that the first metal stand pipe runs from the base of the excavation, and the second metal stand pipe extends from the first pipe to the roof of the mine working;
the adoption of the loads from the roof of the excavation of the second pipe; and
the slippage of the second pipe under load against the counter from the second section of the first pipe, which passes from the first section of the first pipe having a smooth outer diameter, which deforms the second tube, while the second section contains at least one metal roller is welded to the first section, or a metal ring welded to the first section, and the height of the second section from the first section is at least 0.15 inch (4 mm) larger than the inner diameter of the second pipe, and the yield strength of the first pipe more than the yield strength of the second pipe; and a second metal pipe has a smooth inner the diameter and located above the first section.

15. The method according to 14, containing the step of regulating the length of the column.

16. The method of construction malleable racks lining for mining, containing the following floor is dust:
the welding of the second section to the first section having a smooth first outer diameter and the second section comprises at least one metal roller is welded to the first section, or a metal ring welded to the first section, and the height of the second section from the first section is at least 0.15 inch (4 mm) larger than the inner diameter of the second tube,
putting the lower end of the second metal pipe having a smooth inner diameter at the upper end of the first metal pipe; and
moving the lower end of the second tube against the second section of the first pipe, which passes from the first section of the first pipe, and the yield strength of the first pipe more than the yield strength of the second pipe.

17. The method according to item 16, containing the step of welding the retaining strap to the first pipe and the second pipe to hold the first and second pipes together.

18. The method according to 17, containing the step of forming a socket at the lower end of the second pipe, expanding outward to facilitate draping of the second pipe to the first pipe.



 

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18 cl, 15 dwg

FIELD: mining.

SUBSTANCE: facility for connecting sections of support with conveyor consists of bracket rigidly secured on linear section of conveyor and connected with support by means of vertical hinge; support in its turn is connected with vertical ribs of beam of powered roof support section by means of horizontal hinge; hydro-cartridge for control over linear section of conveyor in vertical plane is secured on face surface of support; plunger of hydro-cartridge interacts with beam of section of powered support; also run of hydro-cartridge for control over linear section of powered support in vertical plane exceeds value of support set-off relative to beam of section of support in vertical plane; facility also consists of share located on mining side of conveyor section. The horizontal hinge is connected with vertical ribs of the beam of the section of powered support by means of two coaxial slots made in vertical ribs; also each of slots in vertical plane on ends has rounding with chamfers, the top of the angle between which in each vertical slot is directed to support.

EFFECT: increased functionality of facility under conditions of dirtying due to less dirt ingress and due to self-cleaning capacity of slots during main process operations of facility.

5 dwg

FIELD: mining.

SUBSTANCE: powered support for steep formations of average thickness consists of similar linear sections each of which has roof timber, hydraulic prop of stay brace, shoe, hardware compartment capsule, cave-in and bottom-hole enclosure, as well movement and correction mechanism. Stabilisation and correction mechanism is located on both sides of the hardware compartment capsule and consists of supporting screens and air pads inflating against side surfaces of capsules of neighbouring compartments.

EFFECT: improving serviceability of powered support and its stability and movement method.

2 cl, 3 dwg

Mining module // 2459076

FIELD: mining.

SUBSTANCE: mining module includes section of powered support that consists of foundation, hydraulic support and a canopy. The canopy is attached to mining device on the goaf side of which there are swaying hydraulic cylinders. Note that mining device is done in the form of manipulator with strikers assembly with shearing elements from bottom-hole side that is equipped by hydraulic cylinder of strikers assembly rotation and hydraulic cylinder of manipulator rotation. Note that rotation hydraulic cylinder is pin-jointed by goaf side with platform capable of movement along the canopy of powered support section with the aid of feeding hydraulic cylinder.

EFFECT: mining module provides the possibility to perform coal drawing regarding coal mass cross stratification and allows coal getting by large shear that reduces the required cutting force, decreases specific energy consumption, increases productivity and excludes coal overmilling.

3 dwg

FIELD: mining.

SUBSTANCE: section of powered support of supporting-enclosing type includes bottom, four-link chain, hydraulic props and enclosing element and supporting element, which are connected to each other. Besides, support section includes mechanical spacers located between stock of hydraulic props and supporting element, active cap with supporting element and angular telescope-type adjusting jack. Active cap has the possibility of being moved upwards by means of hydraulic cartridges, and angular adjusting jack serves for lifting of supporting element with active cap, thus providing transformation of supporting element with a cap and enclosing element to a single enclosing element.

EFFECT: higher labour efficiency due to reducing the time costs on the support installation during change-over to development of thicker or thinner formation.

4 dwg

FIELD: machine building.

SUBSTANCE: device for connection of covering with enclosure of powered support section includes coaxially located eye-lugs of retractable sides of the covering and enclosure, which are hinged with pins, the diameters of holes of which are larger than the pin diameter. Two coaxial cylindrical bushings with projections and cavities are installed in eye-lugs of retractable sides of covering and enclosure. At that, bushings are provided with possibility of being attached to each other by turning the external bushing, the projections of which are engaged with projections of internal bushing, thus preventing their axial displacement relative to each other, with further fixation of that position by means of fixing pin. Besides, pin is installed into mutually coaxial holes made in bushings and radially offset relative to their rotation axis.

EFFECT: reduction of metal consumption, as well as labour intensity with regard to assembly of connection of covering and enclosure in case of repair or erection, and removal of the support section.

4 cl, 4 dwg

FIELD: mining.

SUBSTANCE: device for making recesses in fully-mechanised working face involves an actuating element, drilling rod rotation and supply mechanisms, load-carrying frame, drilling cartridge, screw stems and fastening mechanism. The latter is made in the form of suspension mechanism consisting of hydraulic jacks, the cylinders of which are hinged on the covering of the support section, and their stocks are attached to the load-carrying frame, and a detachable support.

EFFECT: improving the operating efficiency.

1 dwg

FIELD: mining.

SUBSTANCE: invention is related to assembly of a shield support for underground mining, comprising a shield canopy and at least one floor beam as elements of the support surface, which are hingedly connected and may be pressed to the rock with the help of at least one hydraulic cylinder, which is maintained in support troughs on the shield canopy and the floor beam. At the same time each element of the support surface comprises a welded structure from components welded to each other. At least one element of the support surface comprises at least one hollow metal boxy profile filled with a solid substance as a component of the support structure. The invention also relates to a configuration of the floor beam and/or the shield canopy with at least one hollow metal boxy profile filled with a solid substance, preferably, concrete.

EFFECT: provision of high load maintenance without increasing total weight.

44 cl, 8 dwg

FIELD: mining.

SUBSTANCE: powered roof comprises basic and linear sections. Note here that manipulator with grippers is mounted at basic section base to displace said linear section after face advance and for installation and dismantling works. Besides, basic section goaf guard is composed of sliding pneumatic blade with the set of air cushions makes a thrust element that cuts off rock structures hung above the stull. Linear section incorporates air post as a thrust composed by a polymer film sleeve reinforced by polymer rings to rest on hardware compartment capsule. Linear section beam is coated with resilient polymer ply to facilitate the contact between lining and roof block structures.

EFFECT: higher stability, ease of installation and dismantling.

3 dwg

FIELD: mining.

SUBSTANCE: proposed complex is equipped with powered roof support section displacement jack attachment drives, rood support being displaced to pans of face conveyor with hydraulic cylinders of adjustment at different inclinations of cleanup face line. It allows a permanent location of face conveyor relative to the point of rock transfer to face loading station. It incorporates spacing-sliding transfer mechanism, guard board elongated part and support section shelter turn drive. Note here that support sections with pans are articulated to make triple units with single control unit. Said powered roof support section displacement jack attachment drive is composed of articulated rabbet joint including perforated grooved guide secured to the pan and moving bracket with fixed rabbet-thrust interconnected by adjustment cylinder for mutual displacement. Overlap shelter is equipped on face chest with shutter extension drive to vary cleanup face line position. It is composed of a set of plate articulated by extending rabbet frame to be extended by hydraulic cylinders articulated with rabbet frame and shelter. Rabbets are articulated with said plates.

EFFECT: higher efficiency.

10 cl, 7 dwg

FIELD: mining.

SUBSTANCE: present invention relates to a collapsible prop of mine timber. The proposed collapsible prop comprises a first metal pipe extending from the base of mine opening, having a first part with a smooth first outer diameter and a second part with a second outer diameter. And the second part comprises at least one metal roller welded to the first part, and a metal ring welded to the first part. The height of the second part from the first is greater than inner diameter of the second pipe by at least 0.15 inches (4 mm). The yield limit of the first pipe is greater than the yield limit of the second pipe. The second metal pipe is located near the first part and extends to the roof of the mine opening, and when the second pipe receives a load from the roof of mine opening, the second part deforms the second pipe and expands the second pipe, creating resistance to the load from the roof of mine opening.

EFFECT: method of creation of timber of the roof of mine opening and construction method of collapsible mine prop is proposed.

18 cl, 15 dwg

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