Cutting crown for mining machines

 

(57) Abstract:

Usage: in the tunneling harvesters when conducting basic and auxiliary preparatory workings, as well as sewage treatment works in the chambers. The essence of the invention: cutting crown for mining machines contains a complete case, lobovina, helical blades, holders and podrazdeleniye tools. Lobovina attached to the end of the body. Blades mounted on the outer side surface of the housing and evenly displaced relative to each other along the perimeter of the housing. The height of each blade is gradually reduced toward lobeline. The holders are placed on lobeline and on each blade, each holder mounted on the rock-breaking tool. Cutting crown has front and rear. On the front of the crown Portorosa tools installed with decreasing towards lobeline step destruction. On the back of the crown Portorosa tools installed with a constant pitch of destruction. The length of the front of the crown on its longitudinal axis is not less than 0.53 and not more 0,73 length from the rear of the crowns on the same axis. Portorosa tools are located one in each line razrusheniya mining machinery, and can be used in the tunneling harvesters when conducting basic and auxiliary preparatory workings on useful fossil, rock or a combination of culling and when carrying out cleaning work in the cells.

Known for cutting crown digging machine, which includes a full body and placed on the body along the spiral lines of the holders, each provided with a cutting tool (see, for example, Chorin Century. N. and other Machines and equipment for coal mines. The Handbook. M. Nedra, 1987, S. 214 - 217, Fig. 2,6).

Known for cutting crown digging machine is a hollow cast body, the surface of which a spiral lines fixed by welding holders cutting tool. During the rotation and movement of the body of the crown cutting tool interacts with destructible material and carries out its destruction. When cutting crown struts up smitten the rock mass to a special loading device. The disadvantages of the Executive body can be attributed to the low efficiency of the supply crushed rock mass to a loading device for loading the table). As a result, after each cycle the ruin the Executive body is lowered into the lower position and make multiple moving it from one wall generation to another. This process requires considerable time, which sometimes is commensurate with the time spent in destruction of the face, which affects the overall energy cost, and durability holders and rock elements. In addition, the disadvantages of the known cutting crowns can be attributed to its lack of reliability, which is caused by unbalance caused by unsustainable placement holders with Reztsova tool on the surface of the housing. Due to the unbalance of the Executive body during its rotation is a significant change loads on the holders, which leads to their separation from the body of the cutting crowns, as well as increased dynamic load transmission mining machines, carrying the cutter drive. These design features of the Executive body lead to a reduction of operational reliability as the Executive body, and mining machines in General.

Closest to the technical essence and the achieved technical result is cutting crown mining machine that includes a housing fixed to the body of lobovina, perimetry, at least three helical blades, the height of each of which is gradually reduced toward lobeline, and posted on lobeline and each blade holders, each of which is placed the rock-breaking tool (see, for example, application great Britain N 2006303, CL E 21 C 25/10, publ. 1979).

Cutting crown is known for digging machine partially eliminates the disadvantages described above of the Executive body, because in the presence of helical vanes on the body of the crown is considerably improved transportation smitten rock mass and, consequently, reduced the time spent on the cleanup of soil excavation. However, improper location of rock cutting tools leads to higher dynamic load cutting crowns and transmission, that is simultaneously in engagement with the destructive material take from two to four incisors. As a result, the coefficient of variation of the forces and torque reaches 10 to 12 or more. This circumstance leads to a significant variation of the load on the holders of rock cutting tools during rotation of the cutting crowns, which leads to the separation of the holders and, therefore, reduces nadezhnosti. Moreover, the parameters of the holders and the orientation of the holes in them do not provide the necessary rear kinematic angles of rock cutting tool. In this arrangement, installation of rock cutting tools often their rear kinematic angles are negative, which causes an increase in power and energy parameters of the process and increased wear of rock cutting tools.

The invention is directed to solving the problem of expanding Arsenal of technical means intended for the formation of openings in rocks, while improving the reliability of the cutting crown for mining machines. The technical result that can be obtained with the implementation of the invention is to reduce the dynamic load on the cutting crowns due to the decrease of the coefficient of variation of efforts and torque.

The problem is solved due to the fact that cutting crown for mining machines, which contains a hollow body attached to the end of the body lobovina mounted on the outer side surface of the housing and evenly displaced relative to each other along the perimeter of at least high on lobeline and each blade holders, each of which is placed the rock-breaking tool, made with the front part, which Portorosa tools installed with decreasing towards lobeline step destruction, and with the rear part, which Portorosa tools installed with a constant step razrusheniya, the length of the front part of the cutting crown on its longitudinal axis is not less than 0.53 and not more 0,73 on the length of the rear part of the cutting crown on the same axis, and Portorosa tools are located one in each line of destruction.

To increase operational reliability of fastening of the holders of each blade can be made with cut-outs to accommodate holders of rock cutting tool.

In addition, the transporting surface of each blade in cross section may have a curved shape. Under this option, the constructive execution becomes possible to reduce the load on the cutting crown by reducing the energy intensity of the transportation process smitten rock.

To simplify manufacturing techniques helical blade having a cross-sectional curved shape, the latter can be made with NAC is the motion of the blade. When this plate is fixed on the blade.

Under this option, the structural embodiment of the transporting surface of the blade plate can be connected with the blade by means of a detachable or non-detachable connection, which provides, if necessary, relatively rapid replacement of worn-out parts of the blade in operating conditions.

To reduce the material intensity of the cutting crowns each blade may be made in the form of a plate with a curved end. Under this option, the constructive execution of the blades simultaneously simplified manufacturing technology cutting crowns, and therefore reducing cost.

Further simplification of the manufacture of the cutting crowns can be achieved by performing each blade of the individual segments. While the segments forming each blade may be interconnected by means of detachable connection.

To improve the strength characteristics of the cutting crown while reducing its consumption of materials it can be made with a cylindrical sleeve, which is mounted coaxially within the housing and rigidly connected with the latter, in this case new case.

Improving working conditions in rock cutting tool due to their forced cooling and increased security for works by reducing the likelihood of ignition of destructible material using the cutting crowns can be achieved by performing the cutting crown with a device for supplying irrigating fluid to Portorosa tools and the face formed by the output. The presence of the specified fixtures on the cutting head additionally allows to improve the conditions of work of the staff by providing dust suppression in the work area of the cutting tooth.

Device for supplying irrigating fluid to Portorosa tools and the face formed by the formulation may be in the form of nozzles, a distribution unit, a line for supplying irrigating fluid and sealing elements. Under this option constructive perform the specified device is ensured by the compactness of the Executive body of the mining machine as a whole and reducing the consumption of irrigating fluid.

Depending on the chosen scheme of arrangement of rock cutting tools and features destructible material Faure is avicenia dynamic balance cutting crowns its case can be made, at least three channels for supplying irrigating fluid to the nozzles. It is helpful to the longitudinal axis of the channels for supplying irrigating fluid to the nozzles were located parallel to the longitudinal axis of the housing.

A significant simplification of the structure provides such an option constructive perform the cutting of the crown, wherein the distribution unit is designed in the form of an installed coaxially inside the sleeve caps with axial channel and at least one radial channel and distribution element with at least three radial channels. When this line for supplying irrigating fluid through the axial and radial channel in the plug through the distribution chamber communicated with each radial channel in the distribution element. Each radial channel in the distribution element is hydraulically connected with the corresponding channel for supplying irrigating fluid to the nozzles.

Under this option, the structural embodiment of a distribution unit distributing chamber may be formed by walls of the annular recess, which is made on the inner side surface of the distribution element, and the outer baramki, which is made on the outer side surface of the stub and the inner side surface of the distribution element. In addition, the distribution chamber can be formed by the walls of the annular grooves, which are made on the outer side surface of the door, and on the inner side surface of the distribution element. In such embodiments, the constructive execution of the distribution chamber the opportunity for a more rational allocation of nozzles on the surface of the cutting of the crown, which allows to reduce the dynamic load on the cutting crowns while maintaining efficiency schemes supply irrigating fluid to the rock-breaking tool and a bottom hole formed output.

Hydraulic connection of each radial channel in the distribution element with the corresponding channel for supplying irrigating fluid to the nozzles may be made in the form of a radial channel in the sleeve and radial channels in the housing. Each radial channel in the sleeve by means of additional distribution chambers communicated with the respective radial channels in the housing. In this case, each radial channel in the housing must be reported to appropriate aplicacao connection radial channel in the distribution element with a channel for supplying irrigating fluid to the nozzles provides the possibility of increasing the number of channels for supplying irrigating fluid to the nozzles without increasing the dimensions of the cutting crown while maintaining the strength characteristics of the cutting tooth.

Under this option, the structural embodiment of the hydraulic connection of the radial channel in the distribution element with the corresponding channel for supplying irrigating fluid to the nozzles additional distribution chamber can be formed by the walls of the annular recess, which is made on the outer side surface of the sleeve, and the inner side surface of the housing. In addition, additional distribution chamber can be formed by the walls of the annular recess, which is made on the inner side surface of the housing, and the outer side surface of the sleeve. Additional distributing chamber can also be formed by the walls of the annular grooves, which are made respectively on the inner side surface of the casing and the outer side surface of the sleeve. Such constructive options to perform additional distribution cameras allow you to simplify the design of the cutting crown and to reduce its dimensions.

To reduce the amount of leakage of irrigation fluid sealing elements can be located respectively between the plug and the switch element on either side of the longitudinal axis of the radial channel in Sakai on either side of the longitudinal axis of the radial channel in the distribution element. In addition, the sealing elements can be established between the sleeve and the casing on both sides of the radial channel in the sleeve.

In this embodiment, seal the mating parts of the cutting crowns each sealing element may be made in the form of a ring of elastic material, which is installed in the annular groove or bore, performed on the corresponding sealing part. This embodiment of the sealing elements can simplify the design of the cutting crown and to facilitate its Assembly or disassembly.

Each channel for supplying irrigating fluid to the nozzles may be made in the form of a blind slot, the mouth of which is located on facing lobeline end of the body. In lobeline must be met through excavation for placement of the nozzles. The longitudinal axis of the recess to accommodate the nozzles on lobeline should be located coaxially with the longitudinal axis of the corresponding channel for supplying irrigating fluid to the nozzles. This option is meaningful implementation of the cutting crown simplify the technology of its production and to reduce the time spent on the replacement of clogged nozzles.

In Fig. 1 izobrazheniya helical blade, in Fig. 4 one of the variants of the constructive execution of the helical blade of Fig. 5 one of the variants of the constructive execution of the helical blade, and Fig. 6 circuit for supplying irrigating fluid to the nozzles.

Cutting head for a mining machine includes a hollow body 1, which may be cylindrical (Fig. 1) or conical (in the drawings are not depicted) form. On the front end of the body 1 is fixed by means of detachable connection, for example, by bolting or using the detachable connection, for example by welding, lobovina 2. On the outer side surface of the housing 1 is fixed, for example, by welding, at least three helical blades 3. Helical blade 3 evenly displaced relative to each other along the perimeter of the housing 1 (Fig. 2). The height (H) of each helical blade 3 is gradually reduced toward lobeline 2. On lobeline 2 and each helical blade 3 posted by holders 4. Each holder 4 has a rock cutting tool 5 (in the drawings, shown conventionally). Each rock cutting tool 5 is connected with the corresponding holder 4 with one-piece or, most preferably, by means of detachable connections. As minucia of these types of tools. On lobeline 2 can be placed zaboric 6. Cutting crown has a front part (A), which Portorosa tools 5 installed with decreasing towards lobeline 2 step (t var) destruction, and the rear part (B), which Portorosa tools 5 installed with a constant pitch (const T) fracture (Fig. 1). The length of the front part (A) cutting crown on its longitudinal axis is not less than 0.53 and not more 0,73 length from rear (B) on the same axis, that is, observed the condition under which 0,53 BA 0,73 B. Portorosa tools are located one in each line 7 of destruction.

Each helical blade 3 can be performed with spaced at their free ends with notches 8 to accommodate holders 4. The holders 4 are fixed on the screw blade 3 by means of detachable or permanent connection. The preferred option is meaningful implementation, in which each holder 4 is connected with a corresponding screw blade 3 by welding. When assembling the cutting crown holders 4 using the templates are installed in slots 8 at the required angles and in such a position connected with blades 3, thereby providing the necessary orientation singing slaughter.

Conveying surface 10 of each blade 3 in cross section may have a curved shape which is convex part is oriented in the direction of lobeline 2 (Fig. 3, 4 and 5).

Each blade 3 can be performed with the cover plate 11 (Fig. 4), the surface 12 which has a curvilinear shape. The curvilinear surface 12 pads 11 forms with the surface 10 of the screw blade 3. The plate 11 is connected with a screw blade 3 by means of the detachable connection, for example, by welding or by means of a detachable connection, for example, by pins or bolts (the drawings are not depicted).

The screw blade 3 may be made in the form of a plate with a curved end 13 (Fig. 5).

The screw blade 3 can be made of individual segments 14 (Fig. 5), which are interconnected by means of detachable connection, for example by welding, or by means of detachable connection, for example via a screw connection (in the drawings are not depicted).

Cutting crown can be made with a cylindrical sleeve 15, which is installed coaxially inside the housing 1 and is rigidly connected with it by means of detachable or permanent connection 17 to fit in the annular bore 16 of the housing 1. Under this option, the structural embodiment of the cutting crown sleeve 15 has spline grooves 18 to accommodate slotted protrusions of the input shaft 19 of the drive of the cutting tooth. In the case when cutting crown made without the cylindrical sleeve 15, spline grooves 18 to accommodate slotted protrusions of the output shaft 19 of the drive of the cutting crowns are performed directly on the body 1 of the cutting crown or on the intermediate element (in the drawings are not depicted).

Cutting crown can be fitted with a device for supplying irrigating fluid, such as water on Portorosa tools 5 and the bottom 20 formed output. As a device for supplying irrigating fluid to Portorosa tools 5 and the bottom 20 formed framing can be used any known design, which is determined by the level of development of science and technology, for example, is placed inside the body 1 of the cutting crowns device for sector supply irrigating fluid or placed on the body of the mining machine is stationary relative to the cutting crown system nozzles for supplying irrigating fluid (in the drawings are not depicted).

Most preferred is a variant of the construction implementation is abode, where it is made in the form of nozzles 21, a distribution site, highway 22 for supplying irrigating fluid and sealing elements 23. Line 22 for supplying irrigating fluid can be performed, for example, in the form of an axial channel in the output shaft 19 of the drive of the cutting crowns (Fig. 1). Line 22 for supplying irrigating fluid through a pipeline system (not shown) hydraulically connected to the discharge connection of the pump for supplying irrigating fluid. The suction connection of the pump for supplying irrigating fluid can be placed directly on the mining machine or to be executed as a stand-alone pump unit, which can be placed and the capacity to host irrigating fluid. It is an option in which the line 22 for supplying irrigating fluid hydraulically connected to the shaft of a water line (not shown).

The nozzles 21 can be placed on each helical blade 3 (the drawings are not depicted). While the nozzles 21 are set so that leaving them a jet of irrigation fluid partially falls on Portorosa tools 5, through their cooling, and partly on the working face 20 on the 21 can be accommodated in the housing 1 (Fig. 6). When this nozzle 21, which were installed on the housing 1, can perform the functions of supply irrigating fluid Portorosa tools 5 and the bottom 20 formed by developing or operating in conjunction with nozzles 21, which are mounted on the screw blades 3.

The nozzles 21 can also be placed on lobeline 2 (Fig. 1) and to supply irrigating fluid Portorosa tools 5 independently or in conjunction with nozzles 21, which are placed on the housing 1 and/or the helical blades 3.

The body 1 of the cutting crowns can be made with at least three channels 24 for supplying irrigating fluid to the nozzles 21. The longitudinal axis of the channels 24 for supplying irrigating fluid to the nozzles 21 are parallel to the longitudinal axis 9 of the housing 1. The channels 24 may be formed during casting of the housing 1, in the case of manufacturing it by casting, or by drilling the housing 1, in the case of manufacturing it welded.

A distribution node may be in the form of an installed coaxially inside the cylindrical sleeve 15 of the stub 25 with an axial channel 26 and at least one radial channel 2 and the switch element 28 with at least t 27 and radial channels in the cap 25 through the distribution chamber 30 is communicated with each radial channel 29 in the distribution element 28. Each radial channel 29 in the distribution element 28 is hydraulically connected with the corresponding channel 24 for supplying irrigating fluid to the nozzles 21.

Distribution chamber 30 can be formed by the walls 31 of the annular grooves, which are made on the inner side surface of the distribution element 28, and the external lateral surface of the stopper 25 (Fig. 1).

Distribution chamber 30 may be formed by walls 32 of the ring recess (Fig. 6), which is made on the outer side surface of the stub 25 and the inner side surface of the distribution element 28.

Distribution chamber 30 can be formed by the walls 31 of the annular grooves, which are made on the inner side surface of the distribution element 28, and the walls 32 of the annular grooves, which are made on the outer side surface of the stub 25 (Fig. 6).

Hydraulic connection of each radial channel 29 in the distribution element 28 with the corresponding channel 24 for supplying irrigating fluid to the nozzles 21 is made in the form of a radial channel 33 in the sleeve 15 and the radial channels 34 in the housing 1. Each radial channel 33 in the sleeve 15 through topologically channel 34 in the casing 1 in communication with the corresponding channel 24 for supplying irrigating fluid to the nozzles 21.

Additional distributing chamber 35 can be formed by the walls 36 of the annular grooves, which are made on the inner side surface of the housing 1, and the external lateral surface of the sleeve (Fig. 1).

Additional distributing chamber 35 can be formed by the walls 37 (Fig. 6) an annular recess, which is made on the outer side surface of the sleeve 15 and the inner side surface of the housing 1.

Additional distributing chamber 35 can be formed by the walls 36 of the annular grooves, which are made on the inner side surface of the housing 1, and the walls 37 of the annular grooves, which are made on the outer side surface of the sleeve 15.

Sealing elements 23 can be located respectively between the plug 25 and lobovina 2 and between the cap 25 and the switch element 28 on either side of the longitudinal axis of the radial channels 27 in the cap 25.

Sealing elements 23 can optionally be located between the distribution element 28 and the sleeve 15 on either side of the longitudinal axis of the radial channel 29 in the distribution element 28.

Sealing elements 23 can be optionally placed the Each sealing element 23 may be made in the form of a ring of elastic material, for example rubber, which is installed in the annular groove or bore, is made on the respective sealing parts (drawings shown conventionally).

Each channel for supplying irrigating fluid to the nozzles 21 can be made in the form of a deaf nests (Fig. 1), the mouth of which is located on facing lobeline 2 end of the body 1. In this case, lobeline 2 is a through recess 38 to accommodate the nozzles 21. The longitudinal axis of the recess 38 to accommodate the nozzles 21 on lobeline 2 is coaxial with the longitudinal axis of the respective channel 24 for supplying irrigating fluid to the nozzles.

Cutting crown mountain machine works as follows.

When you enable the operator to drive rotation of the cutting crowns output shaft 19 of the drive of the cutting crown through a splined connection 18 transmits torque to the body 1 of the cutting tooth. The housing 1 mounted on the boom (in the drawing not shown) mining machines, with the possibility of rotation, rotates relative to the boom. While moving the boom of the mining machine and the rotation of the body 1 of the cutting crown Executive body moves over the face and performs with the rock is usausa tools 5 rock enters the cavity between the screw blades 3 and using the conveying surface 10 of each blade 3 is fed from the bottom 20 for further evacuation of the generated mining. Regardless of the shape of the hull 1 cutting crowns (cylindrical or conical) Portorosa tools 5 are on the cutting crown so that the contour of the face 20 formed by the production, which is formed at the axial depth of the Executive body in the plane passing through the longitudinal axis 9 of symmetry of the cutting of the crown, has the form raveboy line (Fig. 1). Placement of rock cutting tools 5 one per line 7 of destruction, and installation of rock cutting tools 5 on the front side (A) cutting crown with decreasing towards lobeline 2 step (t) fracture and on the rear part (B) cutting crown with a constant pitch (T) of destruction lets you reduce the dynamic imbalance of the Executive body and powertrain mining machines by providing simultaneous interaction with destructible rock the same amount of rock cutting tools 5.

Simultaneously with the start of a drive of the cutting crowns the statement includes a device for supplying irrigating fluid to Portorosa tools 5 and the bottom 20 formed output. Irrigating fluid from the discharge pipe of the pump for supplying irrigating IALA stub 26 25 irrigating fluid is delivered through its radial channels 27 in the distribution chamber 30. It should be noted that the cover 25 may be made several radial channels 27, each of which is connected with its distribution chamber 30. From each distribution chamber 30 irrigating fluid through a corresponding radial channel 29 in the distribution element 28 and the corresponding radial channel 33 in the cylindrical sleeve 15 enters the distribution chamber 35. Each additional distribution chamber 35 irrigating fluid through the radial channels 34 in the housing 1 flows into the corresponding channel 24 for supplying irrigating fluid to the nozzles 21. The channels 24 in the housing 1 irrigating fluid is delivered to the nozzles 21, which can be located on each helical blade 3 and/or on the housing 1 and/or on lobeline 2. From each of the nozzles 21 irrigating fluid jet under pressure is introduced in the rock cutting tool 5 or group of rock cutting tools 5 and/or the bottom 20 formed by developing, implementing cooling rock cutting tools 5 and the cooling of the face 20 formed output. The above described circuit for supplying irrigating fluid to the nozzles 21 can further improve Dean is advogada irrigating fluid collectors around the perimeter of the cutting crown mining machines.

1. Cutting crown for mining machines comprising a hollow body mounted on the end of the body lobovina mounted on the outer side surface of the housing and evenly displaced relative to each other along the perimeter of at least three helical blades, the height of each of which is gradually reduced toward lobeline, and posted on lobeline and each blade holders, each of which is placed the rock-breaking tool, wherein the cutting head is made with the front part, which Portorosa tools installed with decreasing towards lobeline step destruction, and with the rear part, where Portorosa tools installed with a constant pitch of destruction, the length of the front part of the cutting crown on its longitudinal axis is not less than 0.53 and not more 0,73 on the length of the rear part of the cutting crown on the same axis, and Portorosa tools are located one in each line of destruction.

2. Crown under item 1, characterized in that each blade is made with grooves to accommodate holders.

3. Crown under item 1 or 2, characterized in that the conveying surface of each blade in the universi performed with an overlay, one of the side surfaces of which has a curved shape and forms a conveying surface of the blade, while the cover plate is fixed on the blade.

5. Crown under item 4, characterized in that the cover plate is connected with the blade by means of detachable connections.

6. Crown under item 4, characterized in that the cover plate is connected with the blade by means of permanent connection.

7. Crown under item 3, characterized in that each blade is made in the form of a plate with a curved cross-sectional end.

8. The crown on one of the PP. 1 to 7, characterized in that each blade is made of individual segments.

9. Crown under item 8, characterized in that adjacent segments forming each blade, are interconnected by means of detachable connection.

10. The crown on one of the PP. 1 to 9, characterized in that it has a cylindrical sleeve which is installed coaxially inside the housing and rigidly connected with the latter, while the body is made with a circular bore, and the sleeve is made with an annular ledge for placing it in the circular bore of the housing.

11. The crown on one of the PP. 1 to 10, characterized in that it has a device for podio p. 11, characterized in that the device for supplying irrigating fluid to Portorosa tools and the face formed by the production made in the form of nozzles, a distribution unit, a line for supplying irrigating fluid and sealing elements.

13. Crown under item 12, characterized in that the nozzles are located on each blade.

14. Crown under item 12 or 13, characterized in that the nozzles are located on lobeline.

15. The crown on one of the PP. 12 to 14, characterized in that the nozzles are located on the body.

16. The crown on one of the PP. 12 to 15, characterized in that the casing is made with at least three channels for supplying irrigating fluid to the nozzles, with the longitudinal axis of the channels to supply irrigating fluid to the nozzles are parallel to the axis of the housing.

17. Crown under item 12, wherein the distribution unit is designed in the form of an installed coaxially inside the sleeve caps with axial channel and at least one radial channel and distribution element with at least three radial channels, and the line for supplying irrigating fluid through the axial and radial channels in the plug through Russki connected with the corresponding channel for supplying irrigating fluid to the nozzles.

18. Crown under item 17, characterized in that the distributing chamber formed by the walls of the annular recess, which is made on the inner side surface of the distribution element, and the outer side surface of the insert.

19. Crown under item 17, characterized in that the distributing chamber formed by the walls of the annular recess, which is made on the outer side surface of the stub and the inner side surface of the distribution element.

20. Crown under item 17, characterized in that the distributing chamber formed by the walls of the annular grooves, which are made respectively on the outer side surface of the door, and on the inner side surface of the distribution element.

21. Crown under item 17, characterized in that the hydraulic connection of each radial channel in the distribution element with the corresponding channel for supplying irrigating fluid to the nozzles is made in the form of a radial channel in the sleeve and radial channels in the housing, each radial channel in the sleeve by means of additional distribution chambers communicated with the respective radial channels in the housing, each radial crown on p. 21, characterized in that the additional distributing chamber formed by the walls of the annular recess, which is made on the outer side surface of the sleeve, and the inner side surface of the housing.

23. The crown on p. 21, characterized in that the additional distributing chamber formed by the walls of the annular recess, which is made on the inner side surface of the housing, and the external lateral surface of the sleeve.

24. The crown on p. 21, characterized in that the additional distributing chamber formed by the walls of the annular grooves, which are made respectively on the inner side of the case and on the outer side surface of the sleeve.

25. The crown on one of the PP. 17 to 24, characterized in that the sealing elements are located respectively between the cover and lobovina and between the plug and the switch element on either side of the longitudinal axis of the radial channel in the door.

26. The crown on one of the PP. 17 to 25, characterized in that the sealing elements are located between the junction element and the sleeve on either side of the longitudinal axis of the radial channel in the distribution element.

27. Crown the e side of the radial channel in the sleeve.

28. The crown on one of the PP. 25 to 27, characterized in that each sealing element is designed in the form of a ring of elastic material, which is installed in the annular groove or bore, performed on the corresponding sealing part.

29. The crown on one of the PP. 16 to 28, characterized in that each channel for supplying irrigating fluid to the nozzles is executed in blank slot, the mouth of which is located on facing lobeline end of the body, while in lobeline made through excavation for placement of the nozzles, wherein the longitudinal axis of the recess to accommodate the nozzles on lobeline is located coaxially with the longitudinal axis of the corresponding channel for supplying irrigating fluid to the nozzles.

 

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2 dwg

FIELD: mining.

SUBSTANCE: facility for milling and/or drilling rock or similar materials consists of spindle drum assembled on support and intended to rotate around axis; several rotating cutter spindles are installed in drum eccentric to axis of drum. On their ends projecting out of the spindle drum the cutter spindles bear working tools. At least two of cutter spindles are actuated from a common reducing drive, which has driven tooth gears stationary arranged on the cutter spindles and a common drive element interacting with driven tooth gears. Also the drive element and the spindle drum are assembled so as to provide their rotation relative to each other.

EFFECT: processing hard materials at high efficiency of milling, increased operation life of tools, high operational reliability and compactness.

55 cl, 22 dwg

FIELD: mining.

SUBSTANCE: in order to enlarge the range of simultaneous processing and versions of control of a cutting force in the processing zone, formation of destruction zones is performed considering strength characteristics of rock as to width of the processed surface at variation of functional and technological parameters and their rational combination under conditions of selective development of deposits with complex structures. Strength characteristics of rock are fixed by mine rock strength recording sensors connected through a system block to a control system of operation of hydraulic cylinders, and drum balance is provided by distributed offset of hydraulic cylinders. Pressure of working liquid in piston cavities of the hydraulic cylinders is designed for a force required for rotation of turning levers.

EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock at selective development of deposits with complex structures by means of open-pit surface miners.

2 cl, 6 dwg

FIELD: disintegrators and devices for crushing.

SUBSTANCE: invention relates to device for drilling with rock, minerals and other materials crushing. Device for drilling with rock crushing comprises drum support, first and second drum tool magazines installed on support device of drum side by side in double layout, with possibility of rotation around axis of drums. At that, drum tool magazines include multiple tool supports, which carry cutting tools and are arranged so that they are distributed along periphery of drum tool magazines. Multiple tool supports of drum tool magazine have axes, installed transversely in relation to drum axis. At that, axes of tool supports shafts of first drum tool magazine describe first around drum axis, and axes of tool supports shafts of second drum tool magazine describe second conical surface around axis of drum, where two conical surfaces are open on opposite sides. Rotation direction of tool supports of first drum tool magazine is opposite to rotation direction of tool supports of second drum tool magazine.

EFFECT: providing equally good performance regardless of direction of movement of drum tool magazine; invention relates to device for drilling with rock, minerals and other materials crushing; providing equally good performance regardless of direction of movement of drum tool magazine.

14 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention relates to an apparatus for the milling cutting of rock, minerals or other materials in particular of hard materials. Apparatus for the milling cutting has a tool drum working member, which is mounted on a drum carrier rotatably about a drum axis and on the peripheral shell surface of which are disposed, in distributed arrangement, a plurality of tool carriers which carry cutting tools. Tool carriers can be rotatingly driven, wherein their shaft axes run transversely to the drum axis. It is proposed with the invention that a first group of tool carriers and a second group of tool carriers are provided, wherein the rotational direction of the first group is counter to the rotational direction of the second group.

EFFECT: technical result is good milling cutting results for cutting tools in both rotational directions of a tool drum working member.

18 cl, 7 dwg

FIELD: mining.

SUBSTANCE: group of inventions relates to a mobile mining machine, in particular, for driving and advancing tunnels. Method for driving tunnels, drifts and mines with the help of the mining machine, with a movable machine base frame, with (at least) one tool drum, which comprises a bearing frame with at least one drum tool magazine, which can be rotated about a drum axis and has stripping tools, arranged on the circumference of the tool drum, with a rotary drive for the tool drum, with a boom device, with a swinging device for the tool drum with a rotating device for rotating the boom device relatively to a movable machine base, and with a rotary device for tilting of the arrow-shaped device. Boom device has a supporting arm, on which the tool drum 50 is mounted, and a separate swinging base arranged to turn relative to movable machine base, by means of Rotating device. Supporting arm and the swinging base being connected to one another by means of a system of guide bars, providing adjustment of the setting angle of the drum axis in relation to the swing axis. System of guide bars, preferably formed as a trapezoidal four-bar linkage mechanism and has the first bracket on the side of the supporting arm and the second bracket on the side of the swinging base, which are connected by means of levers.

EFFECT: technical result is ability to bring about the driving and advancing of tunnels, roadways and shafts as well in hard rock with a high extraction rate and low tool wear.

33 cl, 24 dwg

FIELD: mining industry.

SUBSTANCE: invention is related to mining plant for extraction of mineral materials, lying in the form of formations or mass of the deposit containing conveyor device to make material and also containing tunneling combine. Combine production unit contains at least one pair of drums, equipped with tools for development of material and coaxially installed on rotary arm and adjusted in height relative to bed machine with the help of rotary hand. Axis of the indicated pair of drums, in fact, is parallel to direction of movement of heading machine. Tools for development of material are arranged in groups on tool supports, arranged along circumference of every drum of the above pair of drums with possibility of rotation around axes located across the axis of the above pair of drums. Rotation axes of tool supports on the first of the above pair of drums are arranged at an angle of 90°-γ relative to the axis of the first drum, and the rotation axes of tool supports on the second of the above pair of drums are arranged at an angle of 90°+γ relative to axis of the second drum.

EFFECT: technical result is high efficiency of extraction of material and reduced wear at the same time.

19 cl, 6 dwg

Cleaning combine // 2248445

FIELD: mining industry.

SUBSTANCE: device has body with ski and electric engine with hydraulic pump on it, actuating hydraulic engine for moving combine along face through cog and hydraulic engine for raising rotating reducer with screw, drive of which is integrated in rotating reducer. Combine is provided with carriage with shaft and stopping devices. Carriage is mounted with possible longitudinal displacement relatively to combine body via chain contour with drive from sprocket. On carriage shaft additional sprocket is freely mounted, engaged with chain contour and cam sleeve, and braking device for fixing rotating reducer, made of two shoulders, interconnected jointly.

EFFECT: higher efficiency, simplified construction.

4 dwg

FIELD: mining.

SUBSTANCE: device for processing of materials with milling comprises a drum holder, a tool drum, where a group of tool shafts is installed with the possibility of being put into rotary motion. At the ends protruding from the tool drum there are processing tools installed. At least two of the tool shafts are made with the possibility of being put in motion by one common drive of transmission. Axes of tool shafts are arranged across the drum axis. Tool shafts are evenly distributed in the tool drum along its perimetre. The invention also relates to the method of materials milling and application of such device or method.

EFFECT: operational reliability of the device, high efficiency of removing material of high strength.

35 cl, 12 dwg

FIELD: mining.

SUBSTANCE: method involves separate extraction of coal and rocks of interlayer with combined cutter-loader with cutting actuating element of selective action. Extraction of coal benches and rock interlayers is performed in the extracted strip per one pass of cutter-loader in ascending order - from soil to roof. Width of the extracted strip is accepted equal to length of two-sided loading element of cutter-loader. Separation of flows of broken coal and rocks of interlayer is performed in the mining face by means of two-sided loading element with shovelling blades and belt reloader equipped with diagonal plough. Separate transportation of broken coal and rocks of interlayer in mining face is performed with cantilever drag conveyor. Combined cutter-loader includes the housing installed on frame with blades; two cutting actuating elements of selective action; two-sided loading element made in the form of chute with shoveling blades installed symmetrically on both sides from longitudinal axis of chute, and belt reloader equipped with diagonal plough.

EFFECT: increasing efficiency of underground development of coal beds owing to selective extraction of coal and interlayers of more precious mineral resources and their separate transportation to the surface via transport chains of the mine.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: proposed plant comprises machine to drill pilot well arranged in drilling room, rock cutting tool, screw to displace sludge, winch with rope and mounting trolley. Besides, it comprises equipment to reception and transfer of sludge. Note here that said winch is arranged at said mounting trolley and located in transport-sorting face. Note also that screw and cable are secured to expander on the side opposite the pilot well mouth.

EFFECT: expanded operating performances and higher efficiency.

5 dwg

Tunnelling combine // 2494253

FIELD: mining.

SUBSTANCE: tunnelling combine is proposed, comprising a cutting element, hydromotors of a movement mechanism, controlled by a hydraulic distributor, and outriggers kinematically connected to hydraulic cylinders equipped with hydraulic locks and controlled by a separate hydraulic distributor. Besides, the tunnelling combine additionally comprises an "or" valve, one inlet of which is connected to one of manifolds of hydromotors of the movement mechanism, and the other one is connected with their second manifold, and a check valve, the under-valve cavity of which is connected to the outlet of the "or" valve, and the above-valve cavity is connected via the hydraulic locks of hydraulic cylinders with their stem cavities. Besides, in the neutral position of the separate hydraulic distributor of hydraulic cylinders control, their piston cavities are connected with a drain manifold via hydraulic locks.

EFFECT: expansion of capabilities of tunnelling combine control and higher safety.

2 dwg

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