Impact-action air-operated device with throttle air control

FIELD: engines and pumps, mining operations.

SUBSTANCE: device comprises a supply air chamber, a device cutting in the compressed feed into the supply air chamber, a hollow cylinder housing a striker separating the cylinder space into idle cycle and running cycle chambers, an accumulation chamber communicating continuously, via passageway, with the running cycle chamber and arranged on the cylinder end face on the said running cycle chamber side, a constantly open throttle operation chamber inlet channel, an outlet channel furnished in the cylinder side wall, a working tool with a tail. The aforesaid device has a barrel provided with an annular collar and a flow-through pressure augmentor chamber arranged on the idle cycle chamber side communicating continuously, via the cover throttle inlet channel, annular groove and the cylinder lengthwise channel, with the supply air chamber, and, intermittently, via the pressure augmentor radial channel and the cylinder annular groove, with the idle operation chamber. The striker is furnished with the throttling start channel. The aforesaid barrel bottom faces the cover and bears, by its annular collar, on the cover collar to form the supply air chamber, the distance from the pressure augmentor channel exit to the outlet channel being smaller than the striker length.

EFFECT: higher effect on the processed medium.

7 cl, 6 dwg

 

The invention relates to the field of construction and mining machines impact and can be used to create manual pneumatic hammers for engineering and heavy hammer to fracture rock and frozen ground.

Known pneumatic hammer (see, for example, as the USSR №787632, M. CL. IS 3/24, 1980), contains a working tool, the drummer with the channel opened by the camera of the stroke, channels, inlet and outlet with an annular recess chamber in the cylinder and chamber idling on the side of the working tool, indicated by a channel in the cylinder, and an annular undercut-Luggage canal-side release communicated constantly with a network of compressed air and is covered by the drummer periodically.

Specified and similar technical solutions have shortcomings: the ring groove-Luggage and Luggage idling communicated constantly among themselves, that causes considerable pressure chamber idling and inhibits the drummer, reducing its initial speed, therefore, the kinetic energy of the striker, the transmitted instrument; channel drummer through radial exit on the lateral surface before impact perepuskat part of the air with considerable pressure from the chamber of the stroke in the annular recess chamber and through the m channel in the cylinder chamber idling, which also helps to increase the back pressure in the chamber is idle before the collision of the impactor tool; a channel in the drummer after the collision due to the radial exit perepuskat part of the air from the annular undercut camera, and hence the camera idling in the chamber of the stroke with a lower air pressure in it, which significantly reduces the pressure pulse from the camera idle and does not provide a count value of idling, increases the time of idling, reduce the frequency and impact energy.

Also known pneumatic hammer with butterfly distribution (see, for example, as the USSR №1285147, CL EV 37/24, B25D 9/00, 1987), contains a handle with a trigger device, a body with a Central channel and cover between him and the arm, the drummer, separating the Central channel of the body on camera idle and working strokes, the last of which is in communication with the located between the handle and the accumulation chamber in the form of a hollow cylindrical element with a blind lid and bottom, which made the bypass throttle channel, the annular flow chamber network pressure, covering the lid and constantly communicated throttle and vozduhoprovodyaschih channels with cameras working and idle strokes, and a working tool, and into the Central channel is performed guides, in which is placed a hollow cylindrical tool with the possibility of axial movement within the Central channel. The specified pneumatic percussion with throttle distribution is taken as a prototype, as containing the greatest number of essential features used in the proposed technical solution.

The prototype has drawbacks: message annular undercut camera with network camera air and Luggage idling through the through longitudinal channel inlet in the cylinder increases the accumulation volume which must be filled with air to a value of the calculated pressure from the network via the network camera air and through the longitudinal channel of the inlet, however, this leads to the loss of kinetic energy of the striker, and in the beginning of the idle speed after the collision and increase the volume of the chamber idling the pressure pulse of air from the chamber idling is insufficient to ensure the calculated stroke of the striker, resulting in increased time idling and reduced the frequency of strikes in significant poor air flow from network; message annular undercut cameras with camera network air chamber stroke through the through longitudinal channel inlet in the cylinder took what ensures the accumulation volume, which should be filled with air to a value of the calculated pressure from the network via the network camera air and through the longitudinal channel of the inlet, however, this leads to premature deceleration of the striker at the end of the idling by creating significant back pressure in the chamber of the stroke, which leads to exceeding the calculated value of the impulse of the recoil forces acting on the cover and causing significant exceeding of permissible values of amplitude, increasing the force of gravity on the body and affects the sanitary and hygienic conditions for different machines, reduces the reliability and durability of parts and overall design of a pneumatic percussion machine and, on the basis of which aggregated air percussion device; increased volume of the chamber stroke at a reduced pressure of air in the chamber at the beginning of the stroke does not provide the magnitude of the impulse for the implementation of the calculated average pressure along the path of the striker and reduces its kinetic energy and frequency of the blows.

Noted disadvantages of the prototype in General reduce the effectiveness of interaction with the processing medium.

The technical problem solved by the invention is the improvement effect of impact on the treated environment by minimizing the amount actually camerabag stroke and increase the amount of the actual camera idling; fixing for end-to-end channel connecting the camera constantly network of air and the camera is idle, the function of the channel run; Association undercut cameras from camera idling in the form of a still camera, the fast and the furious, telling her with a camera network air throttle channel inlet and periodically with camera idling through the channel, boost, join undercut-cameras-side chamber stroke in the camera view with the accumulation volume, telling her Luggage stroke constantly channel bypass.

You need some plot movement of the striker to block the channel of fast and furious, telling the camera idling and the camera afterburner when working stroke and to open the message at idle. Marked will not create significant back pressure of air in the chamber when idling stroke, and consequently, to increase the speed of the collision. During acceleration of the striker in the initial period of idling air pressure in the chamber due to receive it from the network camera will fall slightly, and when opening the channel of the afterburner chamber pressure at idle will increase, and the drummer, having received additional boost pressure will increase the speed of its movement in the direction of the cover. Marked will reduce the movement of the striker at idle and increase the ing the frequency of the blows.

Thus, to achieve the effect you want to change the coordinate of the channel of the afterburner and the camera afterburner to constantly communicate with a network of compressed air through the chamber network of air.

The problem is solved in that the pneumatic percussion with throttle distribution includes camera network control, a device enabling the compressed air network of air, a hollow cylinder, placed in it the drummer, dividing the cylinder chamber on the camera idle and stroke, the accumulation chamber, communicated constantly with channel bypass with camera stroke, mounted on the end face of the cylinder side chamber stroke the cover and constantly open throttle channel inlet into the chamber of the stroke, the exhaust passage in the side wall of the cylinder, the working tool shank, whereby the device is provided with a glass annular flange and situated on the side of the camera idle running camera afterburner reported accordingly constantly with camera network of air through the throttle channel inlet in the lid, an annular groove and a longitudinal channel in the cylinder and periodically with camera idling through the radial channel of the afterburner and the annular undercut made in the cylinder, and the drummer has Drosselmeier run, the glass turned his head to the lid and rests an annular flange on the cap flange with the formation of the network camera air, and the distance from the cut-off edge of the slice channel of the afterburner to the exhaust channel is made smaller length drummer.

It is advisable throttle channel start to perform end-to-end view of a bent channel drummer.

It is advisable throttle channel of the start in the form of a helical groove on part of the length of the side of the drummer from the shank of the tool.

It is advisable throttle channel of the start in the form of through an inclined channel drummer.

It is advisable throttle channel of the start in the form of an inclined groove on the lateral surface of the striker.

It is advisable throttle channel of the start in the form of a longitudinal groove on the length of the side surface of the striker side of the shank of the tool.

It is advisable throttle channel of the start in the form of flats on part of the length of the side of the drummer from the shank of the tool.

Pneumatic percussion with butterfly distribution (figure 1) contains a hollow cylinder 1 with the annular groove 2 holds drummer 3, separating the cavity of the cylinder 1 to camera 4 working and idle for 5 turns, the accumulation chamber 6, with the constantly reported by the bypass channel 7 camera of the stroke. Cover 8 provided with a flanged collar 9 and the sealing flange 10, by means of which it rests on the end face 11 of the cylinder 1 and the glass 12, which is provided with an annular shoulder 13 facing the flange 10. The cover 8 is also provided with an inlet throttle channel 14 into the chamber 4 and the throttle channel 15 with the transition to the annular groove 16 in the cylinder with a continuation of the longitudinal channel 17 in the annular flow chamber of the afterburner 18 formed by the camera 5 idling lateral surfaces of the cylinder and clutch 19. The Cup 12 uplatnena and Rethimno, such as by threaded connection, attached to the cylinder 1 and is equipped with vozduhopotok channel 20 from the starting device 21 of any known type. Between the Cup 12 and the flange 10 of the cover 8 is formed by the camera network air 22. Annular flow chamber of the afterburner 18 periodically reported through radial channels 23 with afterburner chamber 5 and a radial outlet channel 24, which is installed vozduhoobmenu ring 25 with the exhaust slot channel 26. Between the ring 25 and the cylinder 1 is formed a discharge chamber 27. The shank 28 of the working tool 29 is installed in the chamber 5 and is held from falling out by a device for holding, for example, in the form of rubber-metal cap 30 attached Rethimno relative to the cylinder 1 by means of the screw or the other known connections. Drummer 3 to launch a pneumatic device is provided with a cranked through channel 31 (Fig 1), or a spiral groove 32 (2), or through a sloped channel 33 (Fig 3), or a sloped groove 34 (figure 4), or longitudinal groove 35 on the side surface of the striker (5), or a chamfer 36 on the side surface of the striker (6).

Pneumatic percussion with throttle distribution works as follows.

When enabled, the starting device 21, the compressed air flows through the channel 20 in the Cup 12 in the network camera 22. From the chamber 22 network air enters the chamber 4 stroke on the throttle channel 14 and through the throttle channel 15, turning 16 and channel 17 into the chamber 18 of the afterburner. From the chamber 18 compressed air through radial channels 23 afterburner, an annular undercut 2 and cranked through channel 31 (Fig 1), or helical grooves 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the flats 36 on the striker (6) enters the chamber 5 idling.

Because the chamber 4 and the chamber 6 is communicated between themselves and the chamber 4 is communicated with the atmosphere through channel 24, the camera 27 and the channel 26 having a continuous cross-section large in comparison with the cross section of the intake throttle channel 14 in the cover 8, the pressure of the chamber 4 is maintained at atmospheric. Camera 5 with the atmosphere divided and flowing the air from the chamber 18 through the annular undercut 2 and cranked through channel 31 (Fig 1), or helical grooves 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the flats 36 on the striker (6) determines the pressure increase in the movement of the striker 3 in the direction of the chambers 4 and 6, which determines the beginning of idling.

When the movement of the striker 3, the pressure in the chamber 5 idle will be slightly reduced. This is because the rapidly increasing volume of the chamber 5 at idle does not have time to fill with air coming from the chamber 18 through the channel of the afterburner 23, an annular groove 2 and the throttle channel, made in the form of end-to-end crankshaft channel 31 (Fig 1), or helical grooves 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the flats 36 on the striker (6).

Upon further movement of the striker 3 lateral surface of the open channel of the afterburner 23 and accumulated in the chamber 18, the air sharply fill volume of the chamber 5 and will substantially increase the pressure pulse of air at idle and the speed of movement of the striker.

Subsequent movement of the striker 3 his side surface of peracre the outlet channel 24. At the same time in the chamber 4 of the stroke and the chamber 6 will begin the process of compressing air, clipped them, and air network, again coming from the chamber 22 through the inlet throttle channel 14 in the cover 8.

After the opening of the lateral surface of the striker 3 with the outlet 24 of the pressure of the air in the chamber 5 idling and communicated with her camera afterburner 18 will be reduced to the amount atmospheric as through the outlet port 24 of the camera 5, and the camera 18 through the channel of the afterburner 23 are communicated with the exhaust chamber 27 and through the slot 26 in vozduhoobmenu the ring 25 with the atmosphere. Under the influence of the difference in the pulse pressure of the air in the chambers 4 and 5 drummer 3 will slow down your movement and will stop at the clearing point. Immediately under the action of the pressure pulse of air from the chamber 4, the drummer will begin to rapidly move in the direction of the shank 28 of the working tool 29, making the stroke.

The pressure in the chambers 5 and 18 will remain almost equal to atmospheric, as the exhaust channels 24 and 26, and the channel of the afterburner 23 have a square passage sections, substantially greater than the area of the intake throttle channel 15, turning 16 and channel 17.

Subsequent movement of the striker 3 will block its lateral surface sequentially output port 24, thereby starting the pressure increase is ozdoba, cut off in the chambers 5 and 18, as well as air, again natakamulu these cells through the annular groove 2 and cranked through the channel 31 (Fig 1), or a spiral groove 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the chamfer 36 on the striker (6) and through the throttle channel 15, the groove 16, the channel 17 and channel 23. After the opening of the outlet channel 24, the pressure in the chambers 4 and 6 of the stroke will be reduced to the atmospheric pressure, despite the receipt of a network of air through the intake throttle channel 14 from the chamber 22, as the flow area of the exhaust channel 24 is substantially greater flow area of the intake throttle channel 14 in the cover 8. Thus, the exhaust air from the chambers 4 and 6 are produced through the channel 24 into the exhaust chamber 27 and through the slotted channel 26 in vozduhoobmenu ring 25 into the atmosphere.

As committed by the drummer of the stroke the air pressure in the chamber 5 and is communicated to it through the channel of the afterburner chamber 23 18 will increase. Subsequent overlapping drummer 3 channel afterburner 23 air pressure in the chamber 18 will be intensively to rise to the level of the network, thanks to its continuous flow into the chamber through the inlet throttle channel 15, the groove 16, the channel 17 of the network camera 22. The increased air pressure in the AC the ore 18 practically no effect on the increase in back pressure in the chamber 5, since the area of the orifice through crankshaft channel 31 (Fig 1), or helical grooves 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the flats 36 on the striker (6) is substantially less than the cross-section area of the throttle channel 17. Under the action of the difference in pulse pressure in the chambers 4 and 5 drummer 3 strikes the shank 28 of the tool 29, and described the working process will be repeated with the difference that idling drummer will be formed with the participation of the momentum of the rebound of the striker from the shank of the tool.

The execution of the intake throttle channel 15 in the cover 8 together with the groove 16 and channel 17 helps to ensure the rated pressure of the air flowing in the chamber of the afterburner 18 at the blocked channel afterburner 23 drummer 3, and when the camera 5 with the atmosphere through channel 24, the air flow channel 15 will not exceed estimated. The above enabled without increasing the total air flow, through the implementation of boost at idle with the side of the chamber 5, in conjunction with the placement of the channel afterburner 23 in the wall of the cylinder 1 at a distance from the outlet port 24 is not more than the landing length of the striker 3 to reduce the pressure in the chamber 5 through the use of flow area through crankshaft is on channel 31 (1), or helical grooves 32 (2), or through an inclined channel 33 (Fig 3), or inclined groove 34 (figure 4)or a longitudinal groove 35 on the drummer (see figure 5), or the flats 36 on the striker (6) is substantially smaller in comparison with the channel 15, reduced by redirecting a portion of the air chamber of the afterburner 18 through the inlet throttle channel 15 in the cover 8. Reducing back pressure in the chamber 5 when using pulse afterburner will allow you to increase the stroke of the striker without increasing the cycle time, since the time of idling by increasing the speed of the striker 3 will decrease. Ultimately, this will increase the shock power, and consequently increasing the effectiveness of impact on the processed medium.

1. Pneumatic percussion with butterfly distribution, including the camera network control, a device enabling the compressed air network of air, a hollow cylinder, placed in it the drummer, dividing the cylinder chamber on the camera idle and stroke, the accumulation chamber, communicated constantly with channel bypass with camera stroke, mounted on the end face of the cylinder side chamber stroke the cover and constantly open throttle channel inlet into the chamber of the stroke, the exhaust passage in Boko is an integral part of the cylinder wall, the working tool shank, wherein the device is provided with a sleeve from the annular flange and situated on the side of the camera idle running camera afterburner reported accordingly constantly with camera network of air through the throttle channel inlet in the lid, an annular groove and a longitudinal channel in the cylinder, and periodically with the camera idling through the radial channel of the afterburner and the annular undercut made in the cylinder, and the drummer has a throttle channel launch, the glass turned his head to the lid and rests an annular flange on the cap flange with the formation of the network camera air, and the distance from the cut-off edge slice channel of the afterburner to the exhaust channel is made smaller length drummer.

2. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start made in the form of end-to-end crankshaft channel drummer.

3. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start is made in the form of a helical groove on part of the length of the side of the drummer from the shank of the tool.

4. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start is made in the form of through an inclined channel is the drummer.

5. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start is made in the form of an inclined groove on the lateral surface of the striker.

6. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start is made in the form of a longitudinal groove on part of the length of the side of the drummer from the shank of the tool.

7. Pneumatic percussion device according to claim 1, characterized in that the throttle channel start is made in the form of flats on part of the length of the side of the drummer from the shank of the tool.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: present invention relates to the field mining using thermal fragmentation for the extraction of ore from narrow veins. The method of ore extraction from a vein with opposite side walls involves drilling of pilot holes in the vein directly, with certain pitch along the vein, reaming of the pilot holes by thermal fragmentation until the vein is fragmented, and removal of fragmented ore along the vein. The pitch is determined by the vein width. Along a part of the vein, the pilot holes are reamed gradually according to the given configuration, each second pilot hole is reamed in a greater degree, for its connection to the opposite adjacent pilot holes reamed earlier. The pilot holes are drilled and reamed in a given sequence, starting from drilling of the first group of three pilot holes, the first and third holes from the first group are reamed before reaming the second hole from this group. After the first group of holes, a group of two holes is drilled, the second hole from the second group being reamed before reaming the first hole from the second group. Fragmented ore is removed by suction.

EFFECT: profitable mining of narrow ore veins.

7 cl, 6 dwg

FIELD: mining.

SUBSTANCE: invention can be used for separation of blocks from massifs, for mining valuable crystal raw materials and building stones, breaking oversizes. The device comprises a tube, an elastic sealer mounted on the tube end and a system for injection of fluid into the tube. A plug is provided at one end of the tube and the second end is made in the shape of a collet and longitudinal slots are provided along the tube. An elastic sealing washer and a metal bush are fitted successively on the tube. The sealer is made as a sealing ring fitted in the circular groove provided on the lateral surface of the plug. A hydraulic cylinder installed so that its plunger can enter the tube from the collet side is used as a system for injection of fluid into the tube. A stepwise tapering is provided at the end of the hydraulic cylinder at the side, where the plunger comes out of the tube; a circular groove for cohesion with the tube collet is provided on the external surface of tapering.

EFFECT: increase of efficiency of the device due to reduction of labour consumption during operation of the same and reduction of power required for formation of a crevasse.

5 cl, 4 dwg

FIELD: mining.

SUBSTANCE: invention relates to the construction and mining machines with impact action for fragmentation of rocks and frozen ground by heavy airbreaking machines and to the plugger drills. The device contains the chamber of the network air, prechamber, quill cylinder with installed hammer which separates the cylinder cavity to chambers of the idle and working stroke, head with collar, permanently open inputting throttle conduit made in the tube and connecting the network chamber with the idle chamber, cartridge with the annular collar faced to the head collar, lentic afterburning chamber in the cylinder wall from the idle chamber side, radial afterburning conduit in the cylinder wall which connects the lentic afterburning chamber with the idle chamber, discharge ports in the cylinder sidewall and the operating device with the tail piece. At the level of the afterburning conduit, the hammer and the cylinder have the inner groove chambers which are periodically communicated between each other via the bypassing conduit so as the length of the inner groove chamber on cylinder is less than the hammer's length. On the side tube surface, the radial channel is made to communicate periodically the inner groove chamber in the hammer with the tube longitudinal throttle conduit which is provided with the triggering throttle conduit from the device's side.

EFFECT: impact effect of pneumatic device on treated medium is increased.

2 cl, 2 dwg

FIELD: mechanics.

SUBSTANCE: invention is related to construction and mining impact machines. Mechanism includes network air chamber, pre-chamber, hollow cylinder with striker splitting cylinder cavity into working and idle stroke chambers, lid with bead at one cylinder end from working stroke chamber side, tube with continuously opened inlet duct. Inlet duct connects pre-chamber with idle stroke chamber. Mechanism is also comprised of a cup with circular bead directed to lid bead, circular static boosting chamber in cylinder wall from the side of idle stroke chamber. Boosting duct in cylinder wall is in the form of radial channel connecting static boosting chamber with idle stroke chamber. Boosting duct connects also outlet ducts in cylinder walls and operating tool with tongue. Striker is provided with internal and external recessed chambers interconnected by bypass duct and so that the distance from cutoff edge of boosting duct shear to outlet duct is more than the length of external recessed chamber on striker. Side surface of tube is ensured with radial channel connecting internal recessed chamber in striker with longitudinal tube ducts. From the side of operating tool longitudinal duct of tube is provided with start-up throttle.

EFFECT: increase of impact effect to treated medium.

1 dwg

FIELD: mechanics.

SUBSTANCE: hammer consists of a body with radial outlet and central channels, lid with central hole, striker with axial through channel splitting central channel into working stroke and idle stroke chambers, tube with dead bead from the side of cover. Cover is provided with radial and longitudinal channels and installed coaxially in central channel and displaced in axial through channel of striker and central hole of lid. Cup in the hammer is tightly installed as regard to hammer body forming circular accumulating chamber, which contacts with working stroke chamber by means of radial bypass channel in hammer body. Network air pre-chamber with air supply channel continuously interacts with compressed air network. Hammer also includes air baffling ring with outlet slotted channel, operating tools with bead interacting with body end, operating tool tongue, cap to prevent operating tool from dropping out from central body channel. Hammer body is provided with groove from the side of cup and lid is located in groove to enable reciprocal movements.

EFFECT: reduction of back pressure forces in working stroke chamber and improvement of hammer vibration indicators.

2 dwg

FIELD: mining industry.

SUBSTANCE: said invention relates to percussion devices for disintegration, crushing and compacting of various materials. The key feature of the method is the increased tool velocity due to increase in number of armed assemblies and their movements, which exceed driving flow movement by several times, stepwise decrease in weight of the said assemblies and summing of their movements in order to increase the tool travel along the outer trajectory during acceleration, and utilisation of inertia force of the tool impact weight along the inner trajectory. The other feature is automatic change of the tool outer and inner trajectories ratio at the arming moment. The device consists of a bore, a tool, a tool motor with hydraulic grip, installed freely in each other, and a bore motor with mechanical high-speed pulley block. The design key feature is that two motors are used for arming, and the tool travels by force of the first arm of the robot in the bore, which simultaneously travels as regards to the device support. The other feature is that the tool automatic control is provided by the second arm of the robot, two alternative circuits (a logical controller and onboard computer, and an electromechanic relay circuit) being implemented, which provides for possibility of successive movement of the bore, tool and impact weight with guaranteed stops at outer and inner trajectories of the tool. The said features provide for significantly less energy consumption of percussion processes due to implementing advantages of gravitation and hydraulic energy together with elimination of their shortcomings (bulkiness and low percussion frequency for gravitation, low speed for hydraulic). The said invention provides for possibility of optimisation of parameters and modes of many percussion processes used for treatment of objects with various physical and mechanical properties.

EFFECT: optimised parameters and modes of percussion processes used for treatment of objects with various physical and mechanical properties.

11 cl, 14 dwg

FIELD: mining industry.

SUBSTANCE: said invention relates to mining industry, in particular, to devices for separating cylinder-shaped stock from rock mass. For this purpose, the device comprises a tubular body connected to the drilling machine, which encircles the cylinder-shaped stock, and a cutting tool installed in horizontal cavity of the tubular body. The cutting tool is an abrasive curved element, rigidly mounted on the bottom end of a vertical rod located in the tubular body side vertical slot, while the rod top end is rigidly connected to the inner half-coupling of the free-wheel clutch. One end of the torsion spring is secured to the outer half-coupling of the free-wheel clutch, while the other end is secured to the tubular body cover.

EFFECT: separation of solid cylinder-shaped stock without a central hole from rock mass.

2 dwg

Percussion device // 2325525

FIELD: mining industry.

SUBSTANCE: said invention relates to mining industry, building and construction, and metallurgy, in particular, to percussion devices for disintegration of rock and concrete, ripping of frozen soil and filled ground compaction. The percussion device incorporates body 1 with located therein coaxial straight case 6, the lower end of which is rigidly secured to the bottom end of body 1; in its axial bore 26, together with body 1, travelling generatrixes of arming 7, overflow 8, drain and gas 11 cavities are installed, as well as knocker 4 with piston hook 5 in the middle section, stationary interfaced with inner side of straight case 6 and coaxial annular step valve 12 encircling knocker 4 and straight case 6. The said valve 12 has four outer and three inner steps on side surfaces. Valve 12, along the side of the smallest upper step, is stationary interfaced with body 1 and has a circular groove 15. Circular groove 15 is located between two upper outer steps 13, 14 and, together with body 1, forms a ring channel, which interconnects arming cavity 7 with pressure line in the lowermost position of valve 12, in which the bottom end of the smallest inner step of the latter contacts the free end of straight case 6, and is interfaced with it along the side surface of the medium inner step. The largest inner step of valve 12, together with straight case 6, forms annular slot 25 of specified size, which connects arming cavity 7 of the device with isolated cavity between straight case 6 and valve 12 and connected to the said ring channel by means of radial openings 9 in the side wall of the largest step of valve 12.

EFFECT: improved efficiency and reliability of the percussion device.

5 cl, 3 dwg

Percussion device // 2325524

FIELD: mining industry.

SUBSTANCE: said invention relates to mining industry, in particular, to devices for percussion disintegration of high-strength rock and similar materials and may be used to disintegrate rock, concrete, as well as for frozen soil ripping and filling ground compacting. Engineering problem is to improve efficiency and reliability of the percussion device. The percussion device incorporates a body with non-stationary axial knocker and a co-axial percussion tool (a rod). The bottom three-step end of the body, step size increasing in the knocker travel direction, is encircled with partially axially mobile sleeve. In the recess of the sleeve solid bottom facing the surface of the material being processed, the tool shank is secured stationary, while the sleeve inner side surface is interfaced with corresponding surfaces of the smallest upper and the largest lower steps of the body. The inner cavity of the sleeve is filled with liquid and has a cross baffle, which contacts the body bottom end in the uppermost position of the sleeve. The baffle divides the said sleeve cavity into axial top and bottom chambers, interconnected by means of a coaxial opening in the baffle; diameter of the opening is similar to the one of the knocker. At the end of the working stroke, the bottom end of the knocker enters the bottom chamber through the opening near the uppermost position of the sleeve. On the top chamber side surface, there is a coaxial collar, which encircles the smallest step of the body near the uppermost position of the sleeve and forms a wide annular slot, while near the lowermost position of the sleeve it is interfaced with the side surface of the middle step of the body, so that they together form an isolated annular space interconnected with the sleeve cavity via a narrow ring slot.

EFFECT: improved durability and reliability of the percussion device.

3 cl, 1 dwg

FIELD: mining.

SUBSTANCE: impact action device includes housing provided with an inner bore that receives and allows axial displacement of an impact piston and working tool (spear) arranged coaxially towards said piston. On the top portion of a tool shank there is an annular groove. The lateral surface of said groove mates a limitedly axially displaceable split ring receiving the working tool and at the same time mating the housing surface. Besides, the thickness of said ring is less than the thickness of said groove and its bottom end surface permanently contacts the top end of a rubber-metal shock absorber receiving the working tool. The bottom end of the shock absorber permanently contacts an annular boss formed on the inner side of the housing.

EFFECT: enhancement of reliability, design simplicity and economic feasibility of the device.

2 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention relates to the construction and mining machines with impact action for fragmentation of rocks and frozen ground by heavy airbreaking machines and to the plugger drills. The device contains the chamber of the network air, prechamber, quill cylinder with installed hammer which separates the cylinder cavity to chambers of the idle and working stroke, head with collar, permanently open inputting throttle conduit made in the tube and connecting the network chamber with the idle chamber, cartridge with the annular collar faced to the head collar, lentic afterburning chamber in the cylinder wall from the idle chamber side, radial afterburning conduit in the cylinder wall which connects the lentic afterburning chamber with the idle chamber, discharge ports in the cylinder sidewall and the operating device with the tail piece. At the level of the afterburning conduit, the hammer and the cylinder have the inner groove chambers which are periodically communicated between each other via the bypassing conduit so as the length of the inner groove chamber on cylinder is less than the hammer's length. On the side tube surface, the radial channel is made to communicate periodically the inner groove chamber in the hammer with the tube longitudinal throttle conduit which is provided with the triggering throttle conduit from the device's side.

EFFECT: impact effect of pneumatic device on treated medium is increased.

2 cl, 2 dwg

FIELD: mechanics.

SUBSTANCE: invention is related to construction and mining impact machines. Mechanism includes network air chamber, pre-chamber, hollow cylinder with striker splitting cylinder cavity into working and idle stroke chambers, lid with bead at one cylinder end from working stroke chamber side, tube with continuously opened inlet duct. Inlet duct connects pre-chamber with idle stroke chamber. Mechanism is also comprised of a cup with circular bead directed to lid bead, circular static boosting chamber in cylinder wall from the side of idle stroke chamber. Boosting duct in cylinder wall is in the form of radial channel connecting static boosting chamber with idle stroke chamber. Boosting duct connects also outlet ducts in cylinder walls and operating tool with tongue. Striker is provided with internal and external recessed chambers interconnected by bypass duct and so that the distance from cutoff edge of boosting duct shear to outlet duct is more than the length of external recessed chamber on striker. Side surface of tube is ensured with radial channel connecting internal recessed chamber in striker with longitudinal tube ducts. From the side of operating tool longitudinal duct of tube is provided with start-up throttle.

EFFECT: increase of impact effect to treated medium.

1 dwg

FIELD: mechanics.

SUBSTANCE: hammer consists of a body with radial outlet and central channels, lid with central hole, striker with axial through channel splitting central channel into working stroke and idle stroke chambers, tube with dead bead from the side of cover. Cover is provided with radial and longitudinal channels and installed coaxially in central channel and displaced in axial through channel of striker and central hole of lid. Cup in the hammer is tightly installed as regard to hammer body forming circular accumulating chamber, which contacts with working stroke chamber by means of radial bypass channel in hammer body. Network air pre-chamber with air supply channel continuously interacts with compressed air network. Hammer also includes air baffling ring with outlet slotted channel, operating tools with bead interacting with body end, operating tool tongue, cap to prevent operating tool from dropping out from central body channel. Hammer body is provided with groove from the side of cup and lid is located in groove to enable reciprocal movements.

EFFECT: reduction of back pressure forces in working stroke chamber and improvement of hammer vibration indicators.

2 dwg

FIELD: invention refers to strengthening element for fixing in short, not under core hole, mode and adjusting instrument for fixing similar strengthening element.

SUBSTANCE: mentioned strengthening element has rod, which on one end has thrust cone, which expands in direction to rod, and non-split, tubular clenched bushing through which rod passes and which for expansion and fixing in blind hole is fulfilled with possibility of its pulling on thrust cone so, that it expands in face field turning to thrust cone. Hollow conic expansion of clenched bushing has more sharp conic angle then thrust cone. Mode of fixing of strengthening element in opening is in that clenched bushing is pulled on thrust cone by way of transfer on clenched bushing of vibrating movements in ultrasound diapason of frequencies. Fixing with such mode is light and lightly loads the place of fixing. Adjusting instrument for strengthening element has central rod entering into axial opening of thrust cone at installation on face side of clenched bushing. At that adjusting element has tubular rim circling around central rod for installation on face side of clenched bushing. External diameter of rim is no larger then external diameter of clenched bushing.

EFFECT: increases reliability of strengthening.

13 cl, 13 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and lid installed at cylinder end from working stroke chamber side. The lid has rim supporting rim of cup so that supply-line air chamber is created in-between. Device also has pipe arranged in lid orifice and provided with permanently opened inlet throttle channel communicated with idle stroke chamber. The inlet throttle channel connects supply-line air chamber with idle stroke chamber. Lid also has annular inlet throttle channel providing flow inlet in working stroke chamber and defined by pipe side wall and lid orifice. Device also comprises accumulation chamber permanently communicated with working stroke chamber through radial bypass channel in cylinder, discharge channels formed in side cylinder walls and working tool with stem. Blind augmenter is located in cylinder wall from the side of idle stroke chamber. The augmenter is permanently communicated with supply-line air chamber by means of radial augment channel made in cylinder body. Distance between distributing augment channel edge section and discharge channel is less than striker travel.

EFFECT: increased impact force to be applied to substance to be worked.

1 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and accumulation chamber permanently communicated with working stroke chamber thorough bypass channel. Device also has lid installed at cylinder end from working stroke chamber side and permanently opened inlet throttle channel communicated with idle stroke chamber. Device comprises discharge channel made in cylinder wall and working tool with stem, as well as cup with bottom facing the lid and provided with annular rim supported by rim made in the lid to create supply-line air chamber. Blind augmenter is located in cylinder wall from idle stroke chamber side. The augmenter is permanently communicated with supply-line air chamber by means throttle channel made in lid, annular groove and longitudinal channel of the cylinder. The augmenter periodically communicates with idle stroke chamber by means of radial augment channel made in cylinder. Striker has annular groove and is provided with starting throttle channel. Distance between distributing augment channel edge section and discharge channel is less than striker travel.

EFFECT: increased impact force to be applied to substance to be worked.

6 cl, 5 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and accumulation chamber permanently communicated with working stroke chamber thorough bypass channel. Device also has lid installed at cylinder end from working stroke chamber side and permanently opened inlet throttle channel communicated with idle stroke chamber and starting throttle channel permanently opened in idle stroke chamber and connecting supply-line air chamber with idle stroke chamber. Device comprises discharge channel made in cylinder wall and working tool with stem, as well as cup with rim and blind augmenter located in cylinder wall from idle stroke chamber side. The blind augmenter is permanently communicated with supply-line air chamber via throttle channel made in lid. The blind augmenter is periodically connected with idle stroke chamber through radial augment channel made in cylinder wall. Distance between distributing augment channel edge section and discharge channel is less than striker travel. Cup has bottom facing the lid and is provided with annular rim supported by rim made in the lid to create supply-line air chamber.

EFFECT: increased impact force to be applied to substance to be worked.

1 dwg

Impact mechanism // 2286226

FIELD: plastic metal working; impact-type mechanisms for stamping, riveting and striking the gates.

SUBSTANCE: proposed impact mechanism has power cylinder with working and idle stroke cavities where piston-striker is arranged. Piston is provided with two rods. Working tool is secured on one of rods. Cross-sectional area of second rod exceeds that of rod provided with working tool. Impact mechanism includes receiver which is connected with compressed air source at all times and is brought in communication with working stroke cavity of power cylinder. Impact mechanism is also provided with distributor made in form of electrically- and pneumatically-controlled two-position three-line spool valve. Receiver is provided with passages and power cylinder has holes for connection with these passages; these holes are made in side wall of cylinder sleeve and are closed by piston-striker at moment when it returns to initial position.

EFFECT: increased impact energy.

3 cl, 1 dwg

FIELD: building equipment.

SUBSTANCE: pneumatic hammer includes handle, jacket, housing mounted in jacket, air shock absorbing chamber and shock absorbing spring. Sleeve is arranged between handle and jacket; air supply branch pipe is mounted in said sleeve with possibility of motion. Air shock absorbing chamber is formed by means of handle and sleeve. Shock absorbing spring is mounted between beads formed on housing and on jacket.

EFFECT: improved shock absorbing properties of hammer.

3 cl, 2 dwg

FIELD: ultrasonic tools for vibration-percussion working of ductile metals and alloys by plastic deforming, possibly relaxation-strengthening and passivation treatment, for example of welded joints, surfaces of metallic structures subjected to action of atmospheric, water and soil corrosion.

SUBSTANCE: ultrasonic vibration-percussion tool includes sleeve mounted in wave-guide acoustic transformer at interference whose effort corresponds to its radial deformation exceeding amplitude of cross oscillations of wave-guide acoustic transformer in node of longitudinal oscillations when transformer operates in idle mode. Guides are joined to body of tool through elastic vibration-insulation gaskets.

EFFECT: lowered harmful action of vibrations acting upon operator or upon apparatus controlling operation of tool used as part of manufacturing system.

2 cl, 2 dwg

FIELD: ultrasonic tools for vibration-percussion working of ductile metals and alloys by plastic deforming, possibly relaxation-strengthening and passivation treatment, for example of welded joints, surfaces of metallic structures subjected to action of atmospheric, water and soil corrosion.

SUBSTANCE: ultrasonic vibration-percussion tool includes sleeve mounted in wave-guide acoustic transformer at interference whose effort corresponds to its radial deformation exceeding amplitude of cross oscillations of wave-guide acoustic transformer in node of longitudinal oscillations when transformer operates in idle mode. Guides are joined to body of tool through elastic vibration-insulation gaskets.

EFFECT: lowered harmful action of vibrations acting upon operator or upon apparatus controlling operation of tool used as part of manufacturing system.

2 cl, 2 dwg

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