Solid and frozen ground cutting device

FIELD: mining and building, particularly for layered ground cutting by impulse compressed gas pressure application to the ground.

SUBSTANCE: device has load-bearing frame with vertical guiding shafts and cams connected thereto, gas-dynamic rippers with tubular rods. Connected to rods are screw heads with exhaust orifices, discharge bushes, working chambers, annular cases of gas-distribution units connected to vertical guiding shafts by means of brackets and enclosing vertical guiding shafts of sliding bushes. The device also has protective screen composed of several sections located at different levels along device height, movably connected to lower ends of vertical guiding shafts and eccentrically located relative central orifices adapted to receive tubular rods of gas-dynamic rippers formed in each protective screen section. Device also has supply system for -dynamic rippers. Upper parts of vertical guiding shafts may perform rotation through 0°-360° with fixation thereof and are installed in concentric orifices formed in load-bearing frame. Each cam has orifice for cam fixing in determined position. The orifices are eccentric to longitudinal vertical guiding shaft axis. Load-bearing frame also has concentric orifices formed with regard to each concentric orifice adapted for vertical guiding shaft installation. Concentric orifices of load-bearing frame are used for fixed cam connection with load-bearing frame. The connection is made as locking bolt installed in cam orifice and in one concentric orifice of loaf-bearing frame.

EFFECT: increased capacity.

2 cl, 6 dwg

 

The invention relates to the field of mining and construction and can be used in devices gas-dynamic actions for layer-by-layer destruction array durable and frozen ground.

It is known by the author. St. USSR №968228 IPC C E 02 F 5/30 device for layer-by-layer development of frozen soils, including working tip and a tubular housing with exhaust holes, through which the valve is communicated with a tank of compressed gas. On the upper part of the tubular housing fixed hard disk to which the perimeter pivotally suspended from a rod dividers. Each divider is mounted on a hard disk by means of a pivoting head, which is connected with the divider by means of a threaded connection.

The disadvantages of this device are:

1. Rod dividers passive when splitting into fractions of solid or frozen ground, since the flow of exhaust apertures pulse of compressed gas is detached layer of soil from the array and uplift. The reservoir is supported on the rod dividers, but not destroyed by small fractions. This is because at the periphery of the funnel destruction of residual energy of the expanding gases is not enough for a strong impact of soil on the dividers.

The result is the formation of oversized pieces (large chips) mesloh is or solid ground. The resulting oversized complicates the use of the developed soil for backfilling trenches and pits, excavation and transportation of soil.

If we increase the share of energy pulse of compressed gas to strike the ground about the rod dividers, it will increase the intensity of the destruction.

2. Rod dividers only partially fulfill the role of a protective screen, as all the pieces are smaller than the distance between the rod dividers will not be crushed, and to move the residual energy of the gas pulse beyond the crater of destruction.

The closest solution to the proposed design Ripper is a device for the destruction of solid and frozen soils on author. St. USSR №1697476 IPC 5 E 02 F 5/32 (prototype), comprising a carrier frame with a vertical guide shafts, gas-dynamic rippers with tubular rods, attached to the rods screw lugs having exhaust openings bit bushings, the working chambers, an annular housings naturally nodes associated with the vertical guide shafts by means of brackets and covering the vertical guide shafts bushings slip, protective screen made of separate parts that are located at different levels along the height of the device, fixedly mounted on the lower is their ends of the vertical guide shaft eccentric relative to the Central hole for the passage of the tubular rod of the gas-dynamic the rippers, made in each part of the protective screen, and the power supply system of gas-dynamic rippers.

On a frame of vertical guide shafts mounted for rotation by means of the mechanisms of rotation and fixation using the segmental form of limiters rotation angles 0°...180°in which abuts the Cams mounted on the upper parts of the vertical guide shafts.

The prototype works well for loosening soil in the prepared face. As a result of exposure to soil pulses of high pressure gas from two gas-dynamic rippers in the destruction involved and the ground in the middle part between the gas-dynamic rippers.

But in the absence of trained slaughter use other technological method of destruction array of frozen or solid ground in its pre-development - layered loosening, when the formation of a crater of destruction.

The disadvantage of the prototype is that its design is ill-suited to work in the stratied destruction array of frozen or solid ground. This disadvantage is due to the fact that on the periphery of the funnel fracture energy of two gas pulses from two gas-dynamic rippers becomes insufficient to break up the soil into small factions, formed oversized RL is CI, large chips or frozen solid ground.

You want to make constructive changes to the prototype. In the new design compared with the prototype on author. St. USSR №1697476 IPC 5 E 02 F 5/32 provided to install four gas-dynamic Ripper that before starting work, the operator places on concentric circles, the radius of which he may modify from rminto rmaxdepending on the strength characteristics of the soil and depth of tillage.

These design changes will create additional gas pulses from two additional installed gas-dynamic rippers for uniform crushing of the soil fraction in layer-by-layer destruction array of frozen or solid ground.

The technical result, which will be achieved by implementation of the invention, the enhancement of performance and uniformity crushing soil fractions due to the simultaneous influence of energy of the four gas pulses from the rippers, arranged in concentric circles.

To achieve this technical result the upper part of the vertical guide shaft with the possibility of a fixed rotation 0°...360° installed in concentric holes formed in the support frame, and each Cam is eccentric to the longitudinal axis vertically is the first guide shaft is made a hole for fixing the position of the Cam, and frame relative to each concentric holes for installation of the vertical guide shaft is made of concentric holes for the fixed connection of the Cam with the carrier frame.

In addition, the feature of the device for destruction of solid and frozen soils is that a fixed connection of each Cam with a bearing frame made in the form of a locking bolt mounted in the hole in the Cam and in one of the concentric holes in the frame for fixing the position of the Cam.

These private distinctive features aimed at achieving the same technical result - improve performance and uniformity crushing soil fractions due to the simultaneous effect of four gas pulses to the array developed frozen or solid ground. The invention is illustrated graphics, which depict:

figure 1 gives a General view of the device;

figure 2 - cross section A-a in figure 1;

figure 3 - cross section B-B in figure 1 at the position of the parts of the protective screen in the plan on a minimum distance between the rod housings of gas-dynamic rippers;

figure 4 - location of parts of the protective screen in terms of maximum distance between the rod housings of gas-dynamic rippers;

figure 5 is a view in section the ring body naturally node with the control system of one of the gas-dynamic rippers;

figure 6 is a view in section of the working part of one of the gas-dynamic rippers.

The device includes a vertical guide shaft 1, the upper part of which, with the possibility of a fixed rotation 0°...360° installed in concentric 2 holes made in the frame 3 (Fig 1), gas-dynamic rippers with screw lugs 4, a tubular rod 5 and the annular housings 6 distribution of nodes attached to the rod 5 the main working chambers 7 and bit plugs 8.

Each annular body 6 is connected with the vertical guide shaft 1 by means of bracket 9 and covering the vertical guide shaft 1 bushing 10 slip (figure 1).

Frame 3 vertical guide shaft 1 is attached by nuts 11. On each vertical guide shaft 1 is mounted a Cam 12, abutting against the upper end into the lower end of the supporting frame 3 (Fig 1). Each Cam 12 is eccentric to the longitudinal axis of the vertical guide shaft 1 has a hole 13 for fixing the position of the Cam 12. The axis of the hole 13 in the Cam 12 is removed from the axis of the vertical guide shaft 1 at a distance of Δl (figure 1).

In frame 3 relative to each concentric holes 2 to set the vertical guide shaft 1 is made of concentric holes 14 for fixirovannomu connection of the Cam 12 with the carrier frame 3 (Fig 1, 2).

The fixed connection of each of the Cam 12 with the carrier frame 3 made in the form of a locking bolt 15 that is installed in the hole 13 in the Cam 12 and in one of the concentric holes 14 in the base frame 3.

On the lower ends of the vertical guide shaft 1 by nuts 16 fixedly mounted shield, consisting of located at different levels along the height of the device separate parts 17 (1, 3, 4). A separate section 17 of the protective screen are separated from each other by the height of the device at a distance “h” (figure 1) and provided with Central openings 18 for the passage of the tubular rod 5 gas-dynamic rippers. The axis of the Central hole 18 separate parts 17 of the protective screen removed from the axis of the vertical guide shaft 1 at a distance “l” (Fig 1, 3, 4).

On the flange portion 19 of the tubular rod 5 gas-dynamic Ripper fixed main working chamber 7 (Fig 1). The case of each of the main working chamber 7 is made in the form of a hollow cylinder with a bottom 20 and top 21 of the flange parts and made them in concentric holes 22, which is installed with the bolts 23 for coaxially mounting the lower flange part 20 of the main body of the working chamber 7 to the flange portion 19 of the tubular rod 5 gas-dynamic Ripper for coaxially mounting the upper flange part 21 of the main body of the working chamber 7 to the flange h is STI 24 of the hollow shank 25 of the gas-dynamic Ripper (1).

Each annular body 6 is made: the Central hole 26 of diameter dCCentral upper annular channel 27 with the radial channels 28, the Central lower annular channel 29 with radial channels 30 (figure 5).

Hollow shank 25 of each of the gas-dynamic Ripper kinematically connected with a drive mechanism (not shown) and is mounted rotatably in the internal cavity of the Central hole 26 in the annular housing 6, which also established the sleeve 31 with radial channels 32, a sleeve 33 with the radial channels 34, the sealing ring 35, the flanges 36 of the sealing (figure 5).

In the hollow shank 25 of each of the gas-dynamic Ripper a radial hole 37, which has a Central inlet tube 38, and the annular groove 39 with a diameter of dtoin which the tube 38 is fixed (figure 5).

Each Central inlet tube 38 along the longitudinal axis mounted in the cavity 40 of the shank 25 in the cavity 41 of the main working chamber 7 in the cavity 42 of the tubular rod 5, the valve 43 in the cavity 44 of the control of this valve 43 (Fig 1, 5, 6).

The valve 43 is installed inside the discharge sleeve 8 with the possibility of a limited axial movement and interaction with the bottom end of the tubular rod 5 (6). The valve 43 is tightened against the lower end of the tubular rod 5 by a spring 45 and overlaps vykladyvete 46, made radially on the bit sleeve 8. Movement of the valve 43 up is limited to the bottom end of the tubular rod 5.

Bit sleeve 8 with the tubular rod 5, with the body of the screw tip 4 is installed coaxially and connected splined connections 47 and 48, couplings with lock nuts 49 50 (6). On the body of the screw tip 4 is screw the blade 51.

The pipe 52 is connected to the power source 53 (figure 5). The pipe 52 through conduit 54, through the valve 55 to control the flow of compressed gas through the pipe 56, the fitting 57, through the radial channel 58 in the annular housing 6 through the upper annular channel 27 with the radial channels 28 through radial channels 32 in the sleeve 31 through radial channels 59 in the shank 25 is in communication with the internal cavity 40 of the shank 25 of the gas-dynamic Ripper (5).

The internal cavity 40 of the shank 25 of the gas-dynamic Ripper communicates with the cavity 41 of the main working chamber 7 (Fig 1, 5).

The pipe 52 through line 60, through the valve 61 for controlling the supply of compressed gas through the pipe 62, the nozzle 63, a radial channel 64 in the annular housing 6, through the lower annular channel 29 with radial channels 30 in the annular housing 6 through the radial channels 34 in the sleeve 33, an annular groove 39 in the shank 25 having a diameter of dtothrough the Central inlet tube 38 with bsen with the cavity 44 of the control valve 43 for the message of the annular gap between the tubular rod 5 and the Central inlet tube 38 with the exhaust holes 46 in the discharge sleeve 8 (figure 5, 6).

The operation of the device is as follows. Depending on the desired depth of loosening before work, the operator places the tubular rod 5 gas-dynamic rippers on concentric circles, the radius of which he can change from rminto rmax(1, 3, 4).

This removed the locking bolts 15, the torque of the nuts 11 mounting the vertical guide shaft 1 is reduced to zero, all vertical guide rollers 1 are rotated to the desired angle, which may vary from 0° 360°.

The presence of the gap “h” between the parts 17 of the protective screen facilitates their smooth rotation. Simultaneously with the rotation of the vertical guide shaft 1 is rotating rigidly connected parts 17 of the protective screen and the tubular rod 5 gas-dynamic rippers (1, 3, 4).

The operator then sets the locking bolts 15 in concentric holes 14 in the base frame 3 and the holes 13 in the Cams 12, tighten the nut 11 mounting the vertical guide shaft 1 to the frame 3 (Fig 1).

After setting the distance between the tubular rod 5 gas-dynamic rippers operator includes a drive mechanism (not shown)which provides the synchronous rotation of the shank 25.

Screw the lugs 4, and then all working equipment is the use of gas-dynamic rippers screwed in frozen or firm soil (figure 1, 6).

Torque rotation gas dynamic rippers perceive the spline 47 and 48 and the axial load - contacting elements of the tubular rod 5 and bit of the sleeves 8, bit of bushings 8 and enclosures screw lugs 4 (1, 6).

Nuts 50 prevent loosening couplings 49, resulting in no leakage of compressed gas when filling the annular gap between the tubular rod 5 and the Central inlet tube 38 when filling the cavities 41 of the main working chambers 7 (1, 6).

Simultaneously screwing the device into the ground, the operator opens the valves 55 and 61 for controlling the supply of compressed gas, from which the compressed gas is supplied separately in the main working chamber 7 and in the cavity 44 of the control valve 43 (Fig 1, 5, 6) gas-dynamic rippers.

From a source 53 of the supply pipes 52 and 54, through the valve 55 to control the flow of compressed gas through the pipe 56, the fitting 57, through the radial channel 58 and the upper annular channel 27 with the radial channels 28 in each of the annular housing 6 of the gas-dynamic Ripper (1, 5, 6), through radial channels 32 in the sleeve 31 through radial channels 59 in each shank 25 compressed gas enters the cavity 40 of the shank 25 in the cavity 41 of the main working chambers 7, the annular gap between the tubular rod 5 and the Central feeding the tubes 38 each gas-dynamic Ripper.

At the same time from a source 53 of the supply pipes 52 and 60, through the valve 61 for controlling the supply of compressed gas through the pipe 62, the nozzle 63, a radial channel 64 in each of the annular housing 6 of the gas-dynamic Ripper, through the lower annular channel 29 with radial valves 30 in each of the annular housing 6 through the radial channels 34 in the sleeve 33, an annular groove 39 having a diameter dtothrough the Central inlet tube 38, the compressed gas is supplied into the cavity 44 of the control valve 43 of each of the gas-dynamic Ripper (1, 5, 6).

After screwing the rippers on the calculated depth of loosening the operator rotates the valve 61 for controlling the supply of compressed gas in such a position in which the cavity 44 of the control valve 43 of each of the gas-dynamic Ripper communicated with the atmosphere (figure 1, 5, 6).

The pressure of the compressed gas in the annular gap between the tubular rod 5 gas-dynamic rippers and the Central inlet tube 38 moves down the valve 43 controls the exhaust, clutching the depreciation of the spring 45 and ensuring the release of compressed gas through the exhaust holes 46 located on the bit bushing 8 gas-dynamic rippers (1, 6).

Simultaneously pulsed release of compressed gas through the exhaust holes 46 in the discharge sleeve 8 of an annular gap between labour is striated rod 5 gas-dynamic rippers and Central inlet tubes 38, of the cavities 41 of the main working chambers 7, of the cavities 40 in the shank 25 of the gas-dynamic rippers (1, 6).

A separate section 17 of the protective screen to ensure safe management of works by preventing the scattering of the soil. After the fall of the pressure of the compressed gas in the main working chambers 7 gas-dynamic rippers depreciation of the spring 45 returns the valve 43 in the normally-closed position. Exhaust holes 46 located on the bit bushing 8, overlap valves 43. Valves 55 and 61 are closed (Fig 1, 5, 6). The device then moves to a new place of work, the work cycle is repeated.

The application device can improve performance, uniform crushing of the soil fractions, as frozen or firm soil experiencing simultaneous impact of the four gas pulses from the rippers, located on concentric circles, the radius of which can be changed by the operator depending on the depth of tillage.

1. Device for destruction of solid and frozen soils, comprising a carrier frame with a vertical guide shafts, Cams fixed on them, gasdynamic rippers with tubular rods, attached to the rods screw lugs having exhaust openings bit bushings, the working chambers, the annular housing gazraspredset is positive nodes, associated with the vertical guide shafts by means of brackets and covering the vertical guide shafts bushings slip, protective screen made of separate parts that are located at different levels along the height of the device, fixedly mounted on the lower ends of the vertical guide shaft eccentric relative to the Central hole for the passage of the tubular rod of the gas-dynamic rippers performed in each part of the protective screen, and the power supply system of gas-dynamic rippers, characterized in that the upper part of the vertical guide shaft with the possibility of fixed rotation 0-360° installed in concentric holes formed in the support frame, and each Cam is eccentric to the longitudinal axis of the vertical the guide shaft is made a hole for fixing the position of the Cam and frame relative to each concentric holes for installation of the vertical guide shaft is made of concentric holes for the fixed connection of the Cam with the carrier frame.

2. The device according to claim 1, characterized in that a fixed connection of each Cam with a bearing frame made in the form of a locking bolt mounted in the hole in the Cam and in one of the concentric holes in the frame.



 

Same patents:

FIELD: mining industry, particularly gas-dynamic devices for layered ground cutting.

SUBSTANCE: device has hollow rod body of central ripper kinematically connected to discharge bush coaxially thereto, screw bit body connected to discharge bush coaxially thereto, vertical guiding shafts to be secured to the base machine frame. Corbels are connected to guiding shafts so that corbels may perform longitudinal movement. Corbels have bushings for connecting thereof with guiding shafts. Device also has protective shield with central orifice for hollow rod body passage, valves to control delivery of compressed air and pipelines for compressed air supplying from source to gas distribution mechanism formed as the main operative chamber secured to upper end of hollow rod body and having hollow tail inserted in through central orifice of annular body rigidly connected to corbels. Annular body has central upper annular channel with radial channels and central lower annular channel with radial channels. Annular body may perform limited axial displacement inside discharge bush and may cooperate with lower end of valve rod body to establish communication between annular gap defined by rod body and central supply pipe, and exhaust orifices of discharge bush. Annular body comprises control chamber and central feeding pipe arranged into the control chamber, spring for valve pressing to lower end of rod body of central ripper. The device is provided with four additional gas-dynamic rippers with tails installed in through coaxial orifices formed in the annular body. Upper coaxial channel with radial channels and lower coaxial channel with radial orifices are formed around each through coaxial channel. One upper coaxial annular channel communicates through said valve with pipeline for compressed air supplying from the source and communicates with operative chamber by means of radial channels formed in annular body and through radial channels and inner cavity of the tail. Each other upper coaxial annular channel communicates with central upper annular channel through radial channels in annular body. One of the lower coaxial annular channels communicates with pipeline supplying for compressed air through the valve and with valve control chamber by means of radial channels made in annular body through annular groove created in the tail and through central supplying pipe to establish communication between annular gap defined by rod body of additional ripper and central supplying pipe, and exhaust orifices in discharge bush. Each other lower coaxial annular channel communicates with central lower annular channel through radial channels of annular body.

EFFECT: increased output.

3 cl, 6 dwg

Gas-dynamic ripper // 2244784

FIELD: mining industry; civil engineering.

SUBSTANCE: invention can be used in rippers of gas-dynamic action for loosening firm and frozen soils. Proposed gas-dynamic ripper has hollow rod housing installed coaxially and connected mechanically with housing of screw head with exhaust holes, vertically installed gui9de shaft for fastening on frame of base machine on which bracket is installed for longitudinal displacement with fitted-on bushings for connection with shaft, cocks to control delivery of compressed gas and pipelines to deliver compressed gas from supply source to gas distributor made in form of pneumatic accumulator with hollow shank secured on hollow rod housing, and ring housing with three ring channels in its wall rigidly connected with bracket, coaxially installed inner and outer supply pipes, exhaust control valve installed in screw head installed for limited axial displacement inside housing of screw head and interacting with seat for communicating ring clearance between seat and inner supply pipe with exhaust holes in housing of screw head are provided with control space and inner supply pipe arranged in control space, spring to press valve to seat, and piston for forced displacement of gas installed inside hollow rod housing for limited axial displacement. One of ring channels in wall of ring housing communicates through cock with pipeline to deliver compressed gas from supply source, and it communicates through radial channels made in ring housing through inner supply pipe with valve control space to communicate ring clearance between seat and inner supply pipe with exhaust holes in screw head housing. Space of pneumatic accumulator communicates with atmosphere and with supply source through compressed gas supply control cock, pipelines, ring channel with radial channels in wall of ring housing, radial channels and inner space in shank. Ring clearance between seat and inner supply pipe communicates with supply source through compressed gas supply cock, pipelines, ring channel with radial channels in wall of ring housing and outer supply pipe. Housing of pneumatic accumulator is made in form of hollow cylinder with lower and upper flanged parts provided with concentric holes for coaxial fastening of upper flanged part of pneumatic accumulator to flanged part of hollow shank, for coaxial fastening of lower flanged part of pneumatic accumulator to flanged part of hollow rod housing made at a distance from its upper end face equal to height of housing of pneumatic accumulator. Seat installed on upper end face of hollow rod housing for limiting upwards movement of forced gas displacement piston. Spring for limiting downward movement of forced gas displacement piston is installed on upper end face of seat to limit upward movement exhaust control valve. Outer supply pipe is installed in central hole of forced gas displacement piston.

EFFECT: increased efficiency.

3 dwg

Gas-dynamic ripper // 2236514
The invention relates to the field of mining and construction and can be used rippers gas-dynamic steps for ripping solid and frozen soils

The invention relates to impact tools that can be used in machines for the development of rock and frozen ground in the mining and construction industries

Ripper // 2223370
The invention relates to equipment for loosening frozen ground and frozen bulk materials

The invention relates to the field of mining and road-building machinery, namely the electromagnetic shock mechanisms, and can be used for the destruction of rocks, branches sludge formations in the ladle for casting metals, the activation of the working bodies of mining machines etc

The invention relates to the construction and road machines and is intended for use in static-dynamic Ripper durable and frozen soils for compaction in confined conditions, fracture of asphalt and concrete pavement of roads and other works

Gas-dynamic ripper // 2209891
The invention relates to the field of mining and construction and can be used rippers gas-dynamic steps for ripping solid and frozen soils

Socalval // 2176699
The invention relates to devices designed for mechanical cleaning coatings

Latinpussy ripper // 2154734
The invention relates to the field of mining and construction, in particular for machines for the destruction of frozen and durable soil gasoinline impact

Gas-dynamic ripper // 2244784

FIELD: mining industry; civil engineering.

SUBSTANCE: invention can be used in rippers of gas-dynamic action for loosening firm and frozen soils. Proposed gas-dynamic ripper has hollow rod housing installed coaxially and connected mechanically with housing of screw head with exhaust holes, vertically installed gui9de shaft for fastening on frame of base machine on which bracket is installed for longitudinal displacement with fitted-on bushings for connection with shaft, cocks to control delivery of compressed gas and pipelines to deliver compressed gas from supply source to gas distributor made in form of pneumatic accumulator with hollow shank secured on hollow rod housing, and ring housing with three ring channels in its wall rigidly connected with bracket, coaxially installed inner and outer supply pipes, exhaust control valve installed in screw head installed for limited axial displacement inside housing of screw head and interacting with seat for communicating ring clearance between seat and inner supply pipe with exhaust holes in housing of screw head are provided with control space and inner supply pipe arranged in control space, spring to press valve to seat, and piston for forced displacement of gas installed inside hollow rod housing for limited axial displacement. One of ring channels in wall of ring housing communicates through cock with pipeline to deliver compressed gas from supply source, and it communicates through radial channels made in ring housing through inner supply pipe with valve control space to communicate ring clearance between seat and inner supply pipe with exhaust holes in screw head housing. Space of pneumatic accumulator communicates with atmosphere and with supply source through compressed gas supply control cock, pipelines, ring channel with radial channels in wall of ring housing, radial channels and inner space in shank. Ring clearance between seat and inner supply pipe communicates with supply source through compressed gas supply cock, pipelines, ring channel with radial channels in wall of ring housing and outer supply pipe. Housing of pneumatic accumulator is made in form of hollow cylinder with lower and upper flanged parts provided with concentric holes for coaxial fastening of upper flanged part of pneumatic accumulator to flanged part of hollow shank, for coaxial fastening of lower flanged part of pneumatic accumulator to flanged part of hollow rod housing made at a distance from its upper end face equal to height of housing of pneumatic accumulator. Seat installed on upper end face of hollow rod housing for limiting upwards movement of forced gas displacement piston. Spring for limiting downward movement of forced gas displacement piston is installed on upper end face of seat to limit upward movement exhaust control valve. Outer supply pipe is installed in central hole of forced gas displacement piston.

EFFECT: increased efficiency.

3 dwg

FIELD: mining industry, particularly gas-dynamic devices for layered ground cutting.

SUBSTANCE: device has hollow rod body of central ripper kinematically connected to discharge bush coaxially thereto, screw bit body connected to discharge bush coaxially thereto, vertical guiding shafts to be secured to the base machine frame. Corbels are connected to guiding shafts so that corbels may perform longitudinal movement. Corbels have bushings for connecting thereof with guiding shafts. Device also has protective shield with central orifice for hollow rod body passage, valves to control delivery of compressed air and pipelines for compressed air supplying from source to gas distribution mechanism formed as the main operative chamber secured to upper end of hollow rod body and having hollow tail inserted in through central orifice of annular body rigidly connected to corbels. Annular body has central upper annular channel with radial channels and central lower annular channel with radial channels. Annular body may perform limited axial displacement inside discharge bush and may cooperate with lower end of valve rod body to establish communication between annular gap defined by rod body and central supply pipe, and exhaust orifices of discharge bush. Annular body comprises control chamber and central feeding pipe arranged into the control chamber, spring for valve pressing to lower end of rod body of central ripper. The device is provided with four additional gas-dynamic rippers with tails installed in through coaxial orifices formed in the annular body. Upper coaxial channel with radial channels and lower coaxial channel with radial orifices are formed around each through coaxial channel. One upper coaxial annular channel communicates through said valve with pipeline for compressed air supplying from the source and communicates with operative chamber by means of radial channels formed in annular body and through radial channels and inner cavity of the tail. Each other upper coaxial annular channel communicates with central upper annular channel through radial channels in annular body. One of the lower coaxial annular channels communicates with pipeline supplying for compressed air through the valve and with valve control chamber by means of radial channels made in annular body through annular groove created in the tail and through central supplying pipe to establish communication between annular gap defined by rod body of additional ripper and central supplying pipe, and exhaust orifices in discharge bush. Each other lower coaxial annular channel communicates with central lower annular channel through radial channels of annular body.

EFFECT: increased output.

3 cl, 6 dwg

FIELD: mining and building, particularly for layered ground cutting by impulse compressed gas pressure application to the ground.

SUBSTANCE: device has load-bearing frame with vertical guiding shafts and cams connected thereto, gas-dynamic rippers with tubular rods. Connected to rods are screw heads with exhaust orifices, discharge bushes, working chambers, annular cases of gas-distribution units connected to vertical guiding shafts by means of brackets and enclosing vertical guiding shafts of sliding bushes. The device also has protective screen composed of several sections located at different levels along device height, movably connected to lower ends of vertical guiding shafts and eccentrically located relative central orifices adapted to receive tubular rods of gas-dynamic rippers formed in each protective screen section. Device also has supply system for -dynamic rippers. Upper parts of vertical guiding shafts may perform rotation through 0°-360° with fixation thereof and are installed in concentric orifices formed in load-bearing frame. Each cam has orifice for cam fixing in determined position. The orifices are eccentric to longitudinal vertical guiding shaft axis. Load-bearing frame also has concentric orifices formed with regard to each concentric orifice adapted for vertical guiding shaft installation. Concentric orifices of load-bearing frame are used for fixed cam connection with load-bearing frame. The connection is made as locking bolt installed in cam orifice and in one concentric orifice of loaf-bearing frame.

EFFECT: increased capacity.

2 cl, 6 dwg

FIELD: building equipment, particularly adapted to develop frozen and firm ground.

SUBSTANCE: device has tractor, executive tool formed as band with wedges secured thereto, executive tool frame, which connects the executive tool with tractor, and power source installed on executive tool frame. Device additionally comprises gantry connected to the tractor, vertical frame secured to gantry and cantledge lever. One lever end is pivotally connected to vertical frame. Central lever part is freely supported by executive tool frame through roller. Cantledge is installed on free lever end. Vibrator is rigidly secured inside executive tool frame, wherein the executive tool frame is three-dimensional and connected to vertical frame to perform rotation relative tractor in horizontal and vertical planes. Wedges are solid and cutting faces thereof are oriented along tractor travel direction axis. Band and cutting faces of the wedges form cutting disc having round continuous cutting edge.

EFFECT: increased capabilities due to possibility of ground cutting parameters regulation.

5 dwg

FIELD: mechanical engineering.

SUBSTANCE: the bearing-rotary device in the engineer track vehicle is installed in the nose section of the chassis on the side of the tower of and positioned in the armored hull, it is fastened in cantilever in the tower and made in the form of a low-profile straight cylinder with a bottom shaped as a ball segment. An opening is made in the segment on the side of the tower for disposition of the drive of the bearing platform. The upper part of the portal is cylinder-shaped and provided with a boom rotation mechanism. An ogee is made on the retractable section of the boom, at the end of the projecting part positioned are ears with an axle installed on which are the excavator dipper and the tooth-ripper positioned under the excavator dipper for provision of separate or joint operation by formation of a gripping working member. The wall of the retractable section positioned on the opposite side of the ogee is additionally provided with a cargo-catching hook hanger for applying hoist slings to the cargo. Brackets are made on the lateral walls of the retractable section, fastened in whose ears are two short-range hydraulic cylinders linked with the tooth-ripper through a leverage with formation of a drive for turning and fixing the shaped cutouts for arrangement of the hydraulic cylinders of the tooth-ripper drive at a shift of the boom from the operating to traveling position are made in the lateral walls of the boom bearing section on the side of the retractable section.

EFFECT: expanded functional potentialities of the vehicle, enhanced protection of the bearing-rotary device.

6 cl, 12 dwg

FIELD: mining industry.

SUBSTANCE: invention can be used in working members of mining and earth-moving machines, particularly, in machines for digging hard and frozen soils. Proposed ripper point for breaking hard and frozen soils has shank with slot for fastening, and wedge-like working part formed by front end surface, two side surfaces and rear surface. Working part of front end surface located in place of intensive wear is reinforced along longitudinal axial line H-H by three of stress concentrators, being round elements projecting over front end working surface and dipped into body of point. Distance L between concentrators in row and distance 1 between rows is equal to triple value of their diameter.

EFFECT: reduced effort to applied to small soil, reduced power consumption for ripping, increased service life of ripper point.

3 dwg

Vibration ripper // 2367747

FIELD: construction.

SUBSTANCE: invention concerns ground development by diggers and can be applied in mining, in construction for communication channel and line laying in hard and frozen soil and rock. Vibration ripper includes basic machine, parallelogram suspension, bearing beam 3, struts 5 with ripping cogs, vibration exciters. Articulated supports 8 are mounted at the top part of struts 5 and linked to resilient element 9. Resilient element is made in the form of pneumatic cylinder 9 including two equal chambers encasing force variation pistons 10 connected over stocks 11 and control rods 12 to top parts of struts 5. Each pneumatic cylinder chamber features volume variation pistons 13 connected by concentric stocks 14 over links 15 to hydraulic cylinders 16 controlling chamber volume and mounted at the ends or pneumatic cylinder 9.

EFFECT: enhanced efficiency of ground ripping.

3 dwg

Impact ripper // 2372447

FIELD: construction.

SUBSTANCE: invention is related to construction and mining, and may be used in development of hard rocks, firm and frozen soils. Impact ripper includes basic machine, equal-arm lever mounted on hinged frame with main and additional pneumatic hammers, cavities of which are separated with piston-strikers, and air-distributing system that contains air distributor 12 and air manifold. Air distributor is arranged in the form of body and has rotor 13, which rests with journals via bearings 14 and 15, installed in bodies of couplers 16 and body of air distributor. Inside rotor 13 there are two non-communicating holes 17, arranged along radial lines. On generatrix of rotor 13 there are grooves 18, which are connected to radial holes 17. In journals of rotor 13 there are channels 19, which connect holes 17 to bores and channels 21, arranged in bodies of couplers 16. One of rotor 13 journals is connected via flanged coupler 22 to electric motor 23.

EFFECT: improved efficiency of ripper operation, simplification and increase of operation reliability.

3 dwg

Impact ripper // 2380489

FIELD: mining.

SUBSTANCE: impact ripper consists of base machine, of mounted frame 1, of hydro-cylinder and pneumatic hammer 3. Pneumatic hammer 3 contains a case with piston-die 5 and tooth 4 installed inside. The ripper is equipped with at least one beam 6 connected to mounted frame 1 by means of rotation axle 7 and balance weight 8. Also pneumatic hammer 3 and balance weight 8 are arranged on beam 6 and designed to travel along it.

EFFECT: increased efficiency of soil ripping and reduced dynamic loads affecting base machine.

3 dwg

Improved ripper tip // 2434998

FIELD: mining.

SUBSTANCE: ripper tip includes replaceable tooth and attached seat in top cover of ripper tip. Ripper tooth is protected against rotation within the above top cover of ripper tip owing to locking heavy-shrink fitting so that the replaceable ripper tooth does not rotate when it is being used. Locking heavy-shrink fitting prevents penetration of solid particles into the gap between the walls of the above tooth and the above attached seat. Tooth has locking cone-shaped stock, and the above seat is provided with cone-shaped hole to be adjoined to the above locking cone-shaped stock. Tooth is cone-shaped and ends with a tip. Tip is made from high-strength material. Ripper tooth includes head section made at least partially from high-strength material. Top cover and ripper tooth form conjugation between seat and stock of ripper tooth having the corresponding shape; at that, seat and stock of ripper tooth have inner cone for formation of clamping cone between top cover and tooth; at that, ripper tooth is removed from cover in case of failure of clamping cone. Seat with inner cone forms some part of section for arrangement of ripper tooth in the cover, and the above stock of ripper tooth having the corresponding shape forms the part of ripper tooth. In stock of ripper tooth and section for arrangement of ripper tooth there made are through transverse channels the axial lines of which are aligned in case of fixture in the seat of stock of ripper tooth, which allows inserting the retaining pin. Head section of ripper tooth includes outward protruding arm enabling removal of ripper tooth. Section for arrangement of ripper tooth includes displacement hole that passes from external section of ripper tip to the area of base of the above seat, which allows displacing the tooth at available corresponding tool.

EFFECT: improving wear resistance and service life and economic effectiveness.

21 cl, 14 dwg

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