Pneumatic impact action device with throttle air distribution

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

 

The present 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, MCL IS 3/24, 1980), contains a working tool, the drummer with the channel opened by the camera of the stroke, which is located from the end of the cylinder opposite the working tool-side side surface of the channel inlet and outlet with an annular groove in the cylinder and chamber idling on the side of the working tool, indicated by a channel in the cylinder, and the annular recess (camera) side of the channel 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 (camera) and the camera idling communicated constantly among themselves, that causes considerable pressure from the side of the camera idling and inhibits the drummer, reducing its initial speed, and hence the kinetic impact energy is transmitted to the tool; a channel in the drummer through radial exit on its lateral surface p is ed blow perepuskat part of the air with considerable pressure from the camera work in the annular recess and through a 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 chamber, 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 the estimated stroke of the striker, increases the time of idling, reduce the frequency and impact energy.

It is also known pneumatic percussion with butterfly distribution (see, for example, as the USSR №1235719, MCL 25D 9/14, 1986), containing a working tool, a drummer with a Central through-channel, the cylinder with inlet and outlet channels, the annular recess and the camera idling on the side of the working tool provided between a bypass channel, a tube with a Central channel and channel-inch on a side surface of the tube, and a stretch of canal-flats greater length of the through channel of the drummer, and the drummer divides the cavity of the cylinder chamber of the working and idle strokes.

The main disadvantages of technical solutions: fixed relative to the housing tube supplying air to the chamber idling, which requires the execution of C is lindra, tube and drummer from one installation to ensure the alignment of the listed parts that make it virtually impossible, and three planting these parts relative to each other lead them to distort, inhibition drummer and breakage of the tube; message annular undercut and camera idling through the bypass channel in the isthmus between cameras increases the accumulation volume which must be filled with air from the network through the throttle channel inlet in the tube, however, this leads to the deceleration of the striker by creating significant back pressure in the chamber idling and communicated with it an annular recess in the end of the stroke, resulting in a loss of kinetic the energy of the drummer, and at 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 with significant poor air flow from the network.

It is also known pneumatic percussion with butterfly distribution (see, for example, patent RU 2256545, 25D 9/04, EV 1/30, 2004), including network camera, the compressed air network camera, hollow cylinder, RA is displaced therein drummer with a Central channel and dividing the cylinder chamber on the camera idle and working strokes, filtered through the Central channel of the striker tube connecting the network camera with the camera idling through a constantly open inlet throttle channel mounted on one end of the cylinder side chamber stroke the cover flange and the Central through hole for conduction through her tube, continuously open inlet into the chamber of the stroke of the throttle channel connecting the network camera with the camera of the stroke, informed with the latest accumulation chamber through the bypass channel, the outlet channel, made in the side wall of the cylinder, and the working tool shank mounted in the other end of the cylinder, a glass of his head mounted on the flange of the cover, the annular accumulation chamber formed by the wall of the Cup and the outer lateral surface of the cylinder, the bypass channels made in the cylinder wall at the level of the camera of the stroke in the form of radial channels.

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 main disadvantages of the prototype are: a great time working cycle, low speed drummer and low frequency and impact energy.

techenie the disadvantages of the prototype in General reduce the effect of shock interaction with the treated environment.

The technical problem solved by the invention is the improvement effect of impact on the processed medium by performing in the cylinder wall from the side of the camera idling enclosed chamber of the afterburner and the message of its volume constant throttle intake with camera network air than to eliminate back pressure in the chamber is idle; after the message camera idling and still camera afterburner pulse pressure at idle will increase significantly due to the inclusion of accumulated therein with air pressure close to the network.

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

Thus, to achieve the effect should be enclosed chamber of the afterburner from the camera idling to report through channel inlet in the tube with a camera network of air.

The problem is solved in that the pneumatic percussion with throttle distribution includes camera network air chamber, the device turn on the compressed air network of air, a hollow cylinder, placed in it the drummer, dividing the cylinder chamber on the camera idle and working strokes, mounted on one end of the cylinder side chamber stroke the cover flange, a tube with a constantly open inlet channel connecting the chamber with the camera is idle, the glass with the annular shoulder facing the flange of the cover, an annular enclosed chamber of the afterburner located in the cylinder wall from the side of the camera idling the channel afterburner, reporting periodically enclosed chamber of the afterburner with camera idling, made in the wall of the cylinder in the form of a radial channel, discharge channel, made in the side wall of the cylinder, and the working tool shank, and the drummer and the cylinder on the channel layer afterburner performed internally is their cameras-undercut, periodically interconnected through the bypass channel and so that the length of the internal chamber is undercut on the cylinder is less than the length of the striker, and on the side of the tube, a radial channel, periodically informing the internal chamber is a recess in the striker with the longitudinal channel of the tube, and the longitudinal channel of the tube from the side of the tool is provided with the channel-throttle run.

Appropriate internal chamber is a recess in the striker to run in the form of alternating protrusions and depressions formed annular grooves with straight lines in the profile.

Appropriate internal chamber is a recess in the striker to run in the form of alternating protrusions and depressions formed annular grooves with curved lines in the profile.

It is advisable channel bypass to do with size diameters greater than two diameters of the groove.

Suitable radial channel in the receiver to perform in the form of a vertical slit.

Suitable lower edge of the radial channel in the receiver to perform below the lower cut-off edge of the undercut made in the wall of the cylinder.

Figure 1 shows a pneumatic percussion with a partial longitudinal section with stagnant camera afterburner; figure 2 shows a variant of the internal chamber is undercut on the drummer.

Pneumatic percussion with drath is part of the distribution (see 1) includes a hollow cylinder 1 holds drummer 2, which separates the cavity of the cylinder chamber 3 working and idle 4 moves. In drummer 2 has internal Cam-groove 5 in the form of alternating protrusions and depressions formed annular grooves with straight lines in the profile (figure 1), or internal Cam-groove 36, made in the form of alternating projections and depressions formed annular grooves with curved lines in the profile (figure 2), soamsawali with the internal camera of the recess 6, is made in the cylinder 1 from the side of the camera idling through the bypass channel 7. Side camera 3 cylinder is blocked by a cover 8 with a Central opening 9 for the passage of the tube 10 with the throttle channel 11, provided with a channel-choke 12 is run into the chamber 4, and a radial channel 13, is made in the form of a vertical slit, for periodic messages with camera-groove 5, is made in the form of alternating projections and depressions formed annular grooves with straight lines in the profile (figure 1), or internal camera-groove 36, made in the form of alternating projections and depressions formed annular grooves with curved lines in the profile (figure 2). Cover 8 provided with a flanged collar 14 and the sealing flange 15, by which it rests on the end face 16 of the cylinder 1 and the glass 17, which is provided with the circular stupa is striated flange 18, facing the flange 15. The cover 8 is also equipped with an annular orifice 19 of the inlet into the chamber 3 formed on the side surfaces of the holes 9 and the tube 10 in the form of a gap. The Cup 17 uplatnena and Rethimno, such as by threaded connection, attached to the cylinder 1 and provided with a channel 20, is constantly telling the camera 21 network of air formed in the end area of the air guidance device 22 of any known type, with a glass 17, Rethimno interconnected. Cover 8 with an end face of the Cup 17 from the side of the flange 18 forms a chamber 23, is constantly communicated with the channel 20 with the chamber 21 network of air, connected by a channel 24 with a network of compressed air through the air-distributing device 22. The inner side surface of the Cup 17 and the outer side surface of the cylinder 1 to form the accumulation chamber 25, is constantly communicated with the chamber 3 through a radial bypass channel 26. The cylinder 1 is supplied from the camera 4 an annular enclosed chamber 27 afterburner, periodically communicating through radial afterburner channel 28 in the cylinder chamber 4. Radial outlet channel 29, the level of which is set vozduhoobmenu ring 30 with an outlet channel, for example in the form of a slit 31. Between the ring 30 and the cylinder 1 is formed exhaust chamber 32. The shank 33 of the working tool 34 is made in the cylinder from the chamber 4 and is held from falling out of the device to hold it in place, for example, in the form of rubber-metal cap 35, fixed Rethimno relative to the barrel by a screw or other known connection.

Pneumatic percussion with throttle distribution works as follows.

When the device 22 to supply compressed air flows through the channel 24 into the chamber 21 network of air, where through the channel 20 in the chamber 23 and further network air enters the chamber 3 of the stroke ring on the throttle channel 19. At the same time from prelimary 23 network air enters the chamber 4 idle on the throttle channel 11 in the tube 10 through the channel-choke 12 run, as well as in stagnant chamber 27 afterburner flow through the channel system: the longitudinal channel 11 and the radial channel 13, is made in the form of a vertical slit in the tube 10, the inner chamber is a recess 5 of the striker, made in the form of alternating projections and depressions formed annular grooves with straight lines in the profile (figure 1), or the internal chamber of the recess 36, made in the form of alternating projections and depressions formed annular grooves with curved lines in the profile (figure 2), the bypass channel 7, the inner annular chamber of the bore 6 of the cylinder and radial afterburner channel 28. Due to the marked flow system still camera 27 afterburner : size is controlled by air pressure, close to the network.

As further movement of the striker 2, the pressure in the chamber 4 of idling will be reduced. This is due to the rapidly increasing volume of the chamber 4 at idle and it doesn't have time to fill network air coming from the chamber 24 through the channel-choke 12 run in the tube 10, and when opening the radial channel 13, is made in the form of a vertical slit, the chamber 4 is filled with air more intensively, which will increase the pressure pulse in it.

Upon further movement of the striker 2, the side surface opens external camera-bore cylinder and accumulated in stagnant chamber 27 afterburner air sharply fill volume of the chamber 4 through the afterburner channel 28, which will significantly increase the pressure pulse of air at idle and the speed of movement of the striker.

Upon further movement of the striker 2, the side surface opens the outlet channel 29. Since the exhaust air from the chamber 4 takes place through the exhaust channel of the specified bore, a sharp reduction in air pressure in the chambers 4 and 27 will not occur, and the pressure in the chamber 4 will be maintained by the settlement.

At the same time in the chamber 3 of the stroke and communicated with her chamber 25 through channel 26 will begin the process of compressing air, clipped them, and air network, again coming from Kam is ry 23 through the annular orifice channel 19 of the inlet.

After the opening of the lateral surface of the striker 2 with the outlet 29 and a subsequent movement of the air pressure in chamber 4 is idling and communicated with her stagnant chamber 27 afterburner smoothly, due to receipts from the chamber 23 of the air through channels 11, 13 and 12 of the tube will be reduced to atmospheric values. Under the influence of the difference in the pulse pressure of the air in the chambers 3 and 4 drummer 2 will slow down its movement. Moving under the action of pulse pressure air from the chamber 4 through a pressure-side camera 3 and the drummer continues to compress the air in the chamber 3 and is communicated through channel 26 with a camera 25, including the air coming from the chamber 23 through the annular orifice channel 19. After the blocking of the channel 26 of the striker 2 and the alignment of the power pulses acting on the drummer from cameras 3 and 4, it will stop at the clearing point. Immediately under the action of the pressure pulse of air from the chamber 3, the drummer will begin to rapidly move in the direction of the shank 33, making the stroke. Drummer 2 opens the channel 26 and the camera 3 and 25 communicate with each other and the air pressure in them are aligned, while in the idle end and the beginning of the working stroke of the striker, the pressure in the chambers 4 and 27 will remain almost equal to atmospheric, as the exhaust Kahn is l 29 has a square bore, substantially greater than the area of the channel inductor 12 start and radial channel 13, is made in the form of a vertical slit in the tube 10.

Subsequent movement of the striker 2 will block its lateral surface of the outlet channel 29, which will begin increasing the air pressure is cut off in the chamber 4 and 27, as well as air, again natakamulu these cells through the channel-choke 12 start and radial channel 13 of the tube 10. After closing drummer 2 channel 13 and the inner chamber is undercut cylinder the air in the chamber 4 will flow only through the channel-choke 12 without creating side camera 4 significant back pressure and braking forces drummer.

As you move the striker 2 will overlap the internal chamber of the cylinder bore and alienate camera 4 and 27, then opens a flow channel system: radial channel 13, is made in the form of a vertical slit in the tube 10, the inner annular chambers-groove 5 of the striker, made in the form of alternating projections and depressions formed annular grooves with straight lines in the profile (figure 1), or the internal chamber of the recess 36, made in the form of alternating projections and depressions formed annular grooves with curved lines in the profile (figure 2), the bypass channel 7, the inner annular chambers-the bore 6 of the cylinder, the radial channel 28 afterburner. Thanks to flow-through system the Birmingham canals still camera 27 afterburner will be filled with air by means of its revenues through the channel 11 of the tube 10 until the pressure similar in magnitude to the pressure in the chamber 23. After opening drummer 2 channel 29, the air pressure in the chamber 3 of the stroke and is in communication with the chamber 25 through the channel 26 will be reduced to the atmospheric pressure, despite the receipt of a network of air through the annular orifice channel 19 of the inlet from the chamber 23, as the flow area of the exhaust channel 29 is substantially greater flow area of the channel 19. Thus, the exhaust air from the chambers 3 and 25 is released through channel 29 into the exhaust chamber 32 and through the slotted channel 31 in vozduhoobmenu ring 30 into the atmosphere.

Under the action of the difference in pulse pressure in the chambers 3 and 4 drummer 2, overcoming the back pressure side of the chamber 4, strikes the shank 33 of the tool 34 and described the working process will be repeated with the only difference that the subsequent idling drummer will be formed with the participation of the momentum of the rebound of the striker from the shank of the tool.

Running the height of the internal chamber is undercut 6 smaller height of the striker and the execution throttle channel inlet 7 calibrated helps to ensure the rated air pressure in the enclosed chamber 27 afterburner when drummer 2 in the chamber 4 between the shaft 33 and the outlet channel 29, and when the camera 4 with the atmosphere through channel 29 air consumption ka is Alami 12 and 13 will not exceed the settlement.

Reducing back pressure in the chamber 4 will increase the length of the site of acceleration at idle without increasing the idle time due to the action of a pulse of fast and furious, and when working stroke on the same lot as the acceleration of the striker by reducing back pressure from the chamber 4 to reduce cycle time, than to increase the frequency of the beats of a pneumatic percussion with butterfly distribution, and with sufficient energy of a single blow to increase the efficiency impact on the processed medium.

1. Pneumatic percussion with butterfly distribution, including the camera network air chamber, the device turn on the compressed air network of air, a hollow cylinder, placed in it the drummer, dividing the cylinder chamber on the camera idle and working strokes, mounted on one end of the cylinder side chamber stroke the cover flange, a constantly open inlet into the chamber idling throttle passage in the tube connecting the network camera with the camera is idle, set his plate glass with an annular shoulder facing the flange of the cover, still camera afterburner located in the cylinder wall from camera idling, and the channel afterburner reporting period, the Eski enclosed chamber of the afterburner with camera idling, made in the cylinder wall in the form of a radial channel, discharge channel, made in the side wall of the cylinder, and the working tool shank, characterized in that the drummer and the cylinder on the channel layer afterburner performed with the internal chamber of the undercut, periodically interconnected via a bypass channel, and the length of the inner chamber is undercut on the cylinder is less than the length of the striker, on the side of the tube, a radial channel, periodically informing the internal chamber is a recess in the striker with a longitudinal orifice tube, and the longitudinal throttle tube from the side of the tool is provided with the channel-throttle run.

2. Pneumatic percussion device according to claim 1, characterized in that the inner chamber is a recess made in the form of alternating projections and depressions formed annular grooves with curved lines in the profile.



 

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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

The invention relates to the mining industry and construction, in particular for pneumatic machines percussion

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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