Device to control percussion machine working cycle by pressure (versions)

FIELD: process engineering.

SUBSTANCE: invention relates to percussion machines. It comprises body with slide valve, baffle and rod, piston, spring, impact sensor, working fluid flow sensor, working fluid flow exhaust and control channels. Rod is mounted in the baffle central bore to interact with the slide valve. Said working fluid flow sensor and spring are fitted on said rod. Said working fluid flow exhaust channel can communicate via slide valve bores with back stroke chamber and orifice with working fluid source. Said working fluid flow control channel communicates with working fluid source via control unit and orifice. Piston and body front wall inner surface form the working fluid flow control chamber. Permanent magnet is fitted on said rod at body front wall outer surface. Spring is arranged between piston and baffle. Working fluid flow sensor is composed of ferromagnetic element with control coil connected with control unit. In compliance with first version, impact sensor can be fitted on working tool and is connected with control unit while working fluid flow control chamber can be communicated with working fluid flow discharge channel at open slide valve. In compliance with second version, said chamber can be communicated with back stroke chamber at the hammer back stroke end.

EFFECT: automated control, simplified design.

2 cl, 2 dwg

 

Technical solutions include automation of production processes in various industries, can find application in mining when creating a distribution device for controlling the fluid flow between the sites and the units drum machines.

Known valve A.S. USSR №535430, F16K 17/10, publ. in BI No. 42, 1976, which body has a stop valve, made in the form of a slide valve associated with the piston with the rod, and between the spool and the piston is installed partition with a Central hole, through which passes the rod. The partition is formed with an end face of the piston damper chamber of variable volume. The end of the rod provided with a longitudinal and radial channels.

The disadvantage of this valve is that when the pressure in podpornoy cavity and increase the force of the spring is slow switching of the valve, i.e. the time of its opening increases. This reduces the efficiency of the valve. In addition, the valve design does not allow to reduce the time of closing of the valve, depending only on the parameters of the spring, which also reduces the efficiency of the valve, increasing the cycle time of operation of the shock machine.

The closest in technical essence and essential features is a device for controlling the Oia work cycle impact machine according to the first embodiment according to the patent of Russian Federation №2376467, AS 37/00, B25D 9/00, publ. in bull. No. 35, 2009, includes case, the installed valve, the septum and the rod mounted in the Central hole of the partition and communicating with the valve. It also contains a reflector jet of the working environment, the exhaust nozzle and nozzle control. Reflector jet production environment is located on the rod, and between him and the wall mounted spring. The exhaust nozzle is connected through the outlet and inlet of the valve in its open position with the camera-reverse drum machine and through a throttle - source operating environment to which is connected a nozzle control connected in series through the control unit and the throttle.

The disadvantage of this device is a low speed of operation of the valve, the opening and closing of which is slowed down to increase and decrease the force of the spring, which reduces the efficiency of the device. For collecting and discharging working fluid after its contact with the reflector jet of the working environment requires the introduction of additional devices, which seriously complicates the design and, consequently, reduces the reliability of the device.

Technical challenges - improving the efficiency of the device by controlling the working cycle of the shock machine using pressure, higher speed and open the Oia and closing of the valve, automation of the management process and increase the reliability of the device by simplifying the design, as it does not require additional devices for collecting and draining the working environment.

According to the first embodiment of the set task is solved in that the device for controlling the working cycle of the shock of the machine using a pressure containing housing, the installed valve, the septum and the rod mounted in the Central hole of the partition and communicating with the valve element, responsive to the flow of the working fluid, the exhaust channel of the fluid flow and channel flow control of the working environment, with the mentioned element is located on the stem, on which is installed the spring and the exhaust channel of the fluid flow made with the possibility of connection through the inlet and outlet of the valve in its open position with reverse camera drum machine and through the reactor with a source of working environment, and the said control channel is connected to the source of the working environment through the serially connected control unit and the throttle, according to the technical solution provided with a piston forming with the inner surface of the front wall of the housing chamber of the control flow of the working fluid, made with the possibility of connection to an exhaust flow channel working credibi the open position of the valve, a permanent magnet mounted on the outer surface of the front wall of the housing on the rod, shock sensor, made with the possibility of installation on the desktop tool drum machine, and a spring mounted between the piston and the partition, and the shock sensor is connected to the control unit, when this element responsive to the flow of the working fluid is a ferromagnetic element with the control coil connected to the control unit.

This set of features allows you to increase the efficiency of the device by controlling the working cycle of the shock machine using pressure, faster opening and closing of the valve by introducing a permanent magnet, the automation of the management process through the introduction of the shock sensor and adjust the permanent magnet with the control unit using the control coil of the permanent magnet, and to improve the reliability of the device by simplifying the design by avoiding the use of additional tools for collecting and draining the working environment.

According to the second embodiment of the device for controlling the working cycle of the shock of the machine using a pressure containing housing, the installed valve, the septum and the rod mounted in the Central hole of the partition and communicating the spool, element responsive to the flow of the working fluid, the exhaust channel of the fluid flow and channel flow control of the working environment, with the mentioned element is located on the stem, on which is installed the spring and the exhaust channel of the fluid flow made with the possibility of connection through the inlet and outlet of the valve in its open position with the camera-reverse drum machine and through the reactor with a source of working environment, and the said control channel is connected to the source of the working environment through the serially connected control unit and the throttle, according to the technical solution provided with a piston forming with the inner surface of the front wall of the housing chamber of the flow control the working environment is configured to connect with the camera-reverse drum machine at the end of the return stroke of the striker, a permanent magnet mounted on the outer surface of the front wall of the housing on the rod, and a spring mounted between the piston and the partition, the element that responds to the flow of the working fluid is a ferromagnetic element with the control coil connected to the control unit.

This set of features allows you to increase the efficiency of the device by controlling the working cycle of the shock machine using pressure faster opening and closing of the valve by introducing a permanent magnet, automation process control and regulation of the work of the permanent magnet with the control unit using the control coil of the permanent magnet, and to improve the reliability of the device by simplifying the design by avoiding the use of additional tools for collecting and discharging working fluid and shock sensor.

The essence of the proposed technical solution is illustrated by examples of the structural design and drawings 1, 2, where figure 1 shows a diagram of a device for controlling the working cycle impact machine according to the first embodiment, figure 2 is the same according to the second embodiment. The arrow on the spool (right position in the drawing) indicates that it is closed.

Device for controlling the working cycle of the shock of the machine using a pressure (hereinafter - the device according to the first embodiment includes a housing 1 (Fig 1), the installed valve 2 having an inlet 3 and outlet 4 holes, the latter being connected with the exhaust channel 5 flow of the working fluid, the partition 6 and the shaft 7, mounted in the Central hole of the partition 6 and communicating with the spool 2. The device is provided with a piston 8 mounted on a rod 7 and forming with the inner surface of the front wall of the camera housing 1 9 flow control of the working environment (hereinafter - camera 9 management. Between the partition 6 and the piston 8 on the shaft 7 installed spring 10. On the outer surface of the front wall of the housing 1 on the rod 7 has a permanent magnet 11 (hereinafter - the magnet 11). At the end of the rod 7 outside of the housing 1 is an element representing a ferromagnetic element 12, responsive to the flow of the working fluid, with the control coil 13, which is connected by a cable 14 to a control unit 15. Camera 9 management through the channel 16 of the control flow of the working fluid is connected to a source 17 of the working environment (hereinafter - the source 17 through the control unit 15 and the orifice 18. The exhaust channel 5 medium flow made with the possibility of connection through the inlet 3 and outlet 4 holes of the valve 2 in its open position with the camera 19 reverse shock machine 20 and through the orifice 18 source 17 and is also connected to the chamber 9 of the control unit 15 controls. In the shock machine 20 includes a chamber 21 forward stroke, spring-loaded by a spring 22 drummer 23, the tool 24 and the sensor 25 kick, made with the possibility of installation on the desktop tool 24 drum machine 20 and connected to the control unit 15.

The device according to the first embodiment operates as follows. In the initial position the valve 2 is closed (right in the drawing position), the spring 10 unclenched, drummer 23 drum machine 20 is cocked, as in the chamber 19 reverse undernourished 20 through the orifice 18 is served working environment from source 17. When submitting work environment under the managing pressure PSIMP.in the chamber 9 of the control by the control unit 15 from the source 17, the piston 8 moves (to the left in the drawing). Spring 10 starts to be compressed and the piston rod 7 moves the valve 2 to open (left in the drawing). With a slight opening of the valve 2 ferromagnetic element 12 enters the coverage area of the magnet 11 and rushes to him, greatly enhancing the action of the control pressure PSIMP.and accelerating compression spring 10. The opening of the valve 2 is reduced. The working environment is ejected from the chamber 19 reverse through the inlet 3 and outlet 4 holes of the valve 2 and the exhaust channel 5 on the drain. In the chamber 19 reverse shock machine 20 is set to the atmospheric pressure. The triggered camera 21 through a forward stroke and the spring 22, the striker 23 is moved down at the end of the forward stroke hitting the working instrument 24. Upon impact on the working instrument 24 gauge 25 kick transmits a signal to the control unit 15, which terminates the exposure control pressure PSIMP.on the piston 8 and resets the working medium from the chamber 9 of the control unit 15 controls, inlet 3 and outlet 4 holes of the valve 2 and the exhaust channel 5 on the drain. When the control unit 15 via a cable 14 changes to the opposite, by managing tuski 13, the polarity of the ferromagnetic element 12. Ferromagnetic element 12 begins to sharply depart from the magnet 11, significantly speeding up radiatia spring 10, the movement of the rod 7 and the closing of the valve 2. Starts filling the chamber 19 reverse working environment through the orifice 18 from source 17. The striker 23 is moved upward. The cycle is repeated with the control pressure PSIMP.

The device according to the second embodiment includes a case 1 (figure 2), the installed valve 2 having an inlet 3 and outlet 4 holes, the latter being connected with the exhaust channel 5 flow of the working fluid, the partition 6 and the shaft 7, mounted in the Central hole of the partition 6 and communicating with the spool 2. The device is provided with a piston 8 mounted on a rod 7 and forming with the inner surface of the front wall of the camera housing 1 9 flow control of the working environment (hereinafter - camera 9 control). Between the partition 6 and the piston 8 on the shaft 7 installed spring 10. On the outer surface of the front wall of the housing 1 on the rod 7 has a permanent magnet 11 (hereinafter - the magnet 11). At the end of the rod 7 outside of the housing 1 is an element representing a ferromagnetic element 12, responsive to the flow of the working fluid, with the control coil 13, which is connected by a cable 14 to a control unit 15. Camera 9 management through the channel 16 of the panel is the exercise by the working medium flow connected to a source 17 of the working environment (hereinafter referred to the source 17 through the control unit 15 and the orifice 18. The exhaust channel 5 medium flow made with the possibility of connection through the inlet 3 and outlet 4 holes of the valve 2 in its open position with the camera 19 reverse shock machine 20 with the chamber 9 of the control unit 15 controls and through the orifice 18 source 17. In the shock machine 20 includes a chamber 21 forward stroke, spring-loaded by a spring 22, the striker 23 and a working tool 24. The camera 9 is a control on the possibility of connecting channel 25 with the chamber 19 of the reverse shock of the machine 20 at the end of the return stroke of the striker 23.

The device according to the second embodiment operates as follows. In the initial position the valve 2 is closed (right in the drawing position), the spring 10 is decompressed, the piston 8 is in the far right according to the drawing position. To start a percussion machine 20 via the control unit 15 from the source 17 through the orifice 18 into the chamber 19 reverse is served working environment. Under pressure working environment drummer 23 drum machine 20 moves up, compressing the spring 22. At the end of the return stroke of the striker 23 Luggage 19 reverse communicates with the chamber 9 of the control channel 25. When applying the control pressure PSIMP.the working medium through the channel 25 into the chamber 9 of the control starts the movement of the piston 8 to the left in the drawing (figure 2). Spring 10 beg the onset compressed and the piston rod 7 moves the valve 2 to open (left in the drawing). With a slight opening of the valve 2 ferromagnetic element 12 enters the coverage area of the magnet 11 and rushes to him, greatly enhancing the action of the control pressure PSIMP.and accelerating compression spring 10. The opening of the valve 2 is reduced. The working environment is ejected from the chamber 19 reverse through the inlet 3 and outlet 4 holes of the valve 2 and the exhaust channel 5 on the drain. The control pressure PSIMP.in the chamber 9 management of falls. Its action on the piston 8 into the chamber 9 of the control is reduced. The working environment of the camera 9 vented through the control unit 15 controls, inlet 3 and outlet 4 holes of the valve 2 and the exhaust channel 5 on the drain. In the chamber 19 reverse shock machine 20 is set to the atmospheric pressure. The triggered camera 21 through a forward stroke and the spring 22, the striker 23 is moved down at the end of the forward stroke hitting the working instrument 24. The control unit 15 responds to the movement of the working environment and release her from the chamber 9 of the control cable 14 and the control coil 13 changes the polarity of the ferromagnetic element 12 on the opposite. Ferromagnetic element 12 begins to sharply depart from the magnet 11, significantly speeding up the opening of the spring 10, the movement of the rod 7 and the closing of the valve 2. Upon full closure of the valve 2, the control unit 15 changes polarn the industry ferromagnetic element 12. Starts filling the chamber 19 reverse working environment through the orifice 18 from source 17. The striker 23 is moved upward. The cycle is repeated with the control pressure PSIMP.supplied from the camera 19 reverse at the end of the return stroke of the striker 23.

According to the second embodiment of the device is implemented self-oscillating mode of the shock machine 20 through the connection at the end of the return stroke of the striker 23 channel 25 camera 19 reverse shock machine 20 and the chamber 9 of the control. Changing the position of the entrance channel 25 into the chamber 19 reverse is possible to adjust the energy of impact shock machine 20.

Due to the presence of the camera 9 control associated with the chamber 19 of the reverse shock of the machine 20, the permanent magnet 11 and the ferromagnetic element 12 with the control coil 13 is provided over high-speed actuation of the valve 2. This increases the efficiency of the device. The data structure of the device does not require additional devices for collecting and discharging working fluid, resulting in improving the reliability of its operation.

1. Device for controlling the working cycle of the shock of the machine using a pressure containing housing, the installed valve, the septum and the rod mounted in the Central hole of the partition and communicating with the valve element, reactive napitok working environment, the exhaust channel of the fluid flow and channel flow control of the working environment, with the said element, responsive to the flow of the working fluid, is located on the stem, on which is installed the spring and the exhaust channel of the fluid flow made with the possibility of connection through the inlet and outlet of the valve in its open position with the camera-reverse drum machine and through a throttle - source operating environment, and the said channel control flow of the working fluid is connected to the source of the working environment through the serially connected control unit and the throttle, characterized in that it is provided with a piston forming with the inner surface of the front the walls of the housing chamber of the control flow of the working fluid, made with the possibility of connection with the exhaust channel of the fluid flow in the open position of the valve, a permanent magnet mounted on the outer surface of the front wall of the housing on the rod, shock sensor, made with the possibility of installation on the desktop tool drum machine, and a spring mounted between the piston and the partition, and the shock sensor is connected to the control unit, when this element responsive to the flow of the working fluid, made in the form of the ferromagnetic element with the control coil connected to the control unit.

2. Eliminate the STV to control the duty cycle of the shock machine using pressure, comprising a housing, the installed valve, the septum and the rod mounted in the Central hole of the partition and communicating with the valve element, responsive to the flow of the working fluid, the exhaust channel of the fluid flow and channel flow control of the working environment, with the said element, responsive to the flow of the working fluid, is located on the stem, on which is installed the spring and the exhaust channel of the fluid flow made with the possibility of connection through the inlet and outlet of the valve in its open position with the camera-reverse drum machine and through a throttle - source operating environment, and the said channel control the flow of the working medium is connected to the source of the working environment through the serially connected control unit and the throttle, characterized in that it is provided with a piston forming with the inner surface of the front wall of the housing chamber of the control flow of the working fluid, is arranged to connect with the camera-reverse drum machine at the end of the return stroke of the striker, a permanent magnet mounted on the outer surface of the front wall of the housing on the rod, and a spring mounted between the piston and the partition, the element that responds to the flow of the working fluid, is made in the form of a ferromagnetic element operated with the soup coil, connected to the control unit.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly to advisement of percussion machine impart frequency and poser. Said machine comprises case, hammer with discharge openings that form with the case the hammer forward stroke chamber and hammer backstroke chamber, inertial-friction valve with outlets and seal to reciprocate over the rod secured at hammer, working fluid source arranged to force working fluid into backstroke chamber. Working fluid is forced into backstroke chamber in controlled portions to make hammer with said inertial-friction valve reach the height in said case sufficient to deliver required impact power. Working fluid fed into said backstroke chamber is terminated to allow down travel of the hammer under action of gravity forces. Said inertial-friction valve is retained at top position at rod of the hammer under friction forces acting between the case and valve seal at hammer down travel to close discharge openings of the hammer and inertial-friction valve communicating both aforesaid chambers. It allows the travel of inertial-friction valve travel after hammer over the rod and closure of openings of hammer and said valve at hammer bottom position.

EFFECT: power savings, expanded applications.

2 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: pneumatic jackhammer contains the case with antivibration handle and compressed air feed means, a duct arranged in the case to axially move therein, a shock absorber, a working member and a vibration damper. The duct is made up of two cups. The first cup open end accommodates a detachable cover. The second cup bottom has an orifice representing a guide. Note that the second cup outer surface is furnished with a circular groove, its both sides being provided with circular chutes receiving O-rings sealing the gap between the second cup outer surface and the case inner surface. The working member shaft idle end is furnished with an axial bore. The working member bottom is provided with through holes to communicate working member axial bore space with its outer surface. The working member working end can reciprocate through the orifice made in the second cup bottom. The working member idle end is furnished with a collar to interact with the second cup inner surface. The vibration suppressor represents a cylindrical sleeve with a through axial hole made in the first cup and spring-loaded relative to the first cup bottom and the detachable cover.

EFFECT: minimum level of vibration.

4 cl, 2 dwg

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

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

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly to advisement of percussion machine impart frequency and poser. Said machine comprises case, hammer with discharge openings that form with the case the hammer forward stroke chamber and hammer backstroke chamber, inertial-friction valve with outlets and seal to reciprocate over the rod secured at hammer, working fluid source arranged to force working fluid into backstroke chamber. Working fluid is forced into backstroke chamber in controlled portions to make hammer with said inertial-friction valve reach the height in said case sufficient to deliver required impact power. Working fluid fed into said backstroke chamber is terminated to allow down travel of the hammer under action of gravity forces. Said inertial-friction valve is retained at top position at rod of the hammer under friction forces acting between the case and valve seal at hammer down travel to close discharge openings of the hammer and inertial-friction valve communicating both aforesaid chambers. It allows the travel of inertial-friction valve travel after hammer over the rod and closure of openings of hammer and said valve at hammer bottom position.

EFFECT: power savings, expanded applications.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to percussion machine to break rocks and frozen soils. Proposed hammer comprises circuit chamber, hollow cylinder to house striker with central channel separating cylinder chamber into idle and working stroke chambers, central tube, extra tube with end closed on the side of idle stroke chamber, and working tool. Central tube extends through central channel of striker to communicate circuit chamber with idle stroke chamber. Said extra tube is arranged coaxially with annular clearance inside said central tube to communicate circuit chamber with idle stroke chamber. Cover has central trough bore for central tube to extend there through. Said cover is fitted on hollow cylinder end on the side of idle stroke chamber. Side surfaces of central tube and cover central trough bore make throttling channel to communicate circuit chamber with working stroke chamber. Hollow cylinder sidewall has radial discharge channel. Radial channel is made in central tube on the side of working stroke chamber. Distance between the most distant edges of radial discharge channel and radial channel of central tube does not exceed the length generating line of striker.

EFFECT: reliable starting and operation.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to percussion tools, namely, hydraulic rock breakers. Proposed device comprises one-piece case with piston and piston rod, moving hammer, working tool and pressure conversion piston. Gas chamber is arranged between case, pressure conversion piston and hammer. Pressure conversion cylinder and compensation chamber are arranged between pressure conversion piston and piston rod. Connection channel is made between gas and compensation chambers.

EFFECT: decreased weight and sizes, smaller recoil pulses.

6 cl, 3 dwg

FIELD: mining.

SUBSTANCE: air device of impact action includes housing with radial outlet channel and central channel, cover plate with annular collar and central hole, hammer with axial through channel dividing the central channel into chambers of working and idle strokes, tube with collar on the side of cover plate, longitudinal and radial channels, shell installed so that annular accumulation chamber is formed between side surfaces of the shell and housing, air baffle ring with outlet holes, outlet chamber formed between housing and air baffle ring, and working tool. Additional tube with radial channel is installed coaxially to the tube and is adjacent to it. Tube from elastic material is installed between tube an additional tube.

EFFECT: avoiding unproductive air flow rate from the network by means of idle stroke chamber when it is interconnected with atmosphere.

2 dwg

Pneumatic hammer // 2423221

FIELD: process engineering.

SUBSTANCE: invention relates to impact tools to be used in mining and construction. Proposed pneumatic hammer comprises hollow cylinder with discharge channel, striker, handle, discharge chamber with air deflector casing and discharge channel, working member and intermediate stepped anvil. Said striker divides cylinder inner space into working and idle stroke chambers with inlet channels. Anvil is arranged between striker and working member stem. Pneumatic buffer is arranged on anvil smaller step side. Annular mesh chamber is arranged on anvil larger step side to be communicated with hollow cylinder wall inlet channel. Said chamber has air distributor built in handle. Anvil central step has its face surface facing idle stroke chamber. Pneumatic buffer and mesh chambers are intercommunicated via bypass channel in anvil smaller-step body with deflecting edge on side surface of said smaller step. Deflector edge is periodically shut off by hollow cylinder on pneumatic buffer chamber side.

EFFECT: reduced specific air flow rate, higher efficiency.

15 cl, 14 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to construction and mining machinery intended for crushing rocky ground and frozen ground. Pneumatic hammer comprises circuit chamber, hollow cylinder accommodating striker with central channel dividing cylinder space into idle and work chambers, barrel and tube with throttle valve. Cylinder one face accommodates cover with flange and central through hole. Opposite face of said cylinder accommodates working tool. Cylinder sidewall is provided with discharge channels. Circular static augmentor chamber is arranged between barrel wall and cylinder outer side surface. Wall cylinder has augmentor channel to periodically communicate augmentor chamber with work chamber. Said augmentor channel is shaped over its length equal. Along cylinder generator, to striker length over striker end face edges. Cover is provided with throttle calibrated radial groove to communicate circuit chamber with circular static augmentor chamber. Tube is passed through striker central channel and cover central orifice to communicate circuit chamber with idle chamber via throttle valve. Tube side surfaces and those of cover central through hole form throttle annular channel that makes an inlet of work chamber.

EFFECT: work chamber air pressure variation control.

9 cl, 9 dwg

Air hammer // 2410234

FIELD: machine building.

SUBSTANCE: air hammer consists of hollow cylinder with outlet channel, of striker dividing cavity of cylinder to chambers of working and idle strokes with inlet channels, of handle with devices for inlet and air distribution between chambers, of inlet chamber with air fending jacket and inlet channel and of operating tool with shank end. An intermediate stepped anvil is positioned between the striker and the shank end of the operating tool. A chamber of an air buffer is located on the side of less step of the anvil. From the side of a bigger step of the anvil there is arranged a circular network camera communicated with the distribution device in the handle with inlet channel in a wall of the cylinder. The middle step of the anvil with its end area faces the chamber of the idle stroke. Also, the middle step of the anvil has an air-escape channel with an outlet into the idle-stroke chamber and inlet on a section of side surface, this inlet is periodically overlapped with the cylinder from the side of the circular network camera.

EFFECT: decreased specific consumption of air and raised efficiency of device.

8 cl, 7 dwg

Impact device // 2400350

FIELD: construction.

SUBSTANCE: invention relates to mining and construction equipment - to pneumatic impact devices, is used to break rocks, to drive rod elements into soil, etc. Device comprises vessel with holes, striker with longitudinal channels, chambers of forward and backward motion, exhaust system, inertial valve installed with the possibility of axial motion in specified channel until ledge in it, seat of inertial valve arranged in this channel at the side of forward motion chamber, elastic bush installed in the same valve, and support bushing installed between inertial valve and elastic bush.

EFFECT: invention provides for increased reliability of operation due to limitation of elastic bush deformation.

11 cl, 9 dwg

Pneumatic chipper // 2396428

FIELD: construction.

SUBSTANCE: invention relates to mining and construction. Chipper comprises handle, barrel equipped with holes, intermediate link, valve, valve cover, striker, chamber of working travel arranged along longitudinal axis of barrel formed by valve cover and inner surface of barrel, where striker is installed with the possibility of displacement, and idle run chamber arranged inside barrel coaxially to working travel chamber, circular chamber, jacket with holes. Intermediate link is made of jacket and bushing, joined as a whole, mechanism of gas distribution is made of parts, which perform functions of box and seat, and also from cover and valve, inside jacket there is an expansion chamber formed by inner surface of jacket and jacket seal adjacent to external surface of barrel. Working travel chamber communicates with idle run chamber with the first axial hole arranged in inner part of barrel, and idle run chamber communicates with expansion chamber with the second axial opening arranged in outer part of barrel, box and seat of gas distribution mechanism are functionally combined and arranged in the form of valve barrel, and intermediate link is arranged with circular chamber formed as circular bore at the end of intermediate link inverted to handle. Intermediate link is arranged with circular chamber formed as circular bore at the end of intermediate link inverted to handle. Circular bore is also arranged between outer surface of intermediate link and inner surface of barrel and communicates with outer external surface of valve body. Valve body is equipped with bushing fixed on its external surface. There is a central hole arranged in valve body, as well as radial holes. There are crosswise slots communicated with circular chamber by means of circular bore arranged between opposite ends of valve body and valve cover. Valve is installed in area of slots crossing with the possibility to open-close central hole. Radial holes are communicated with chamber of working travel by means of joined holes arranged in valve body, in cover, in barrel bore and arranged along longitudinal axis between slots. Barrel bore communicates with chamber of working travel by means of hole arranged inside barrel between bore and part of working travel chamber, which is most remote from valve cover. Body is arranged from elastic material and is equipped with external ledges. Jacket seal comprises holes to exhaust spent air arranged longitudinally between external surface of barrel and seal of jacket and are inverted from handle.

EFFECT: simplified design, improved noise and vibration protection.

5 cl, 8 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to construction equipment and is intended for destruction of hard materials with manmade and natural origin. Pneumatic hammer comprises network camera, handle, hollow cylinder, striker arranged in it with central channel, which separates cavity of specified cylinder into chambers of idle stroke and working stroke, tube pulled through central channel of striker and connecting network camera with idle stroke chamber, and working tool with tail. At cylinder end on the side of working stroke chamber there is fixed cover installed with central through opening for tube insertion through it. Side surfaces of tube and central through hole in cover produce throttling channel, which connects network camera with chamber of working stroke. Chamber of working stroke communicates by means of relief channel to accumulation chamber. Radial outlet channel is arranged in cylinder side wall. In central tube, coaxially to it, there is additional tube installed with annular gap. Additional tube is made of elastic material with closed end on the side of idle stroke chamber and is fixed by fastening elements relative to central tube with provision of network camera communication to chamber of idle stroke by means of annular gap.

EFFECT: invention provides for reduction of inefficient air flow.

2 cl, 2 dwg

FIELD: machine engineering, namely manual percussion action machines such as electric hammers and perforators used in building, mining, machine engineering and other industry branches for making openings in building materials and rocks and also for breaking them.

SUBSTANCE: in percussion apparatus when guiding cylinder providing percussion action is arranged in limit axial position, opening is arranged outside zone 2R of working stroke of piston and outside zone H of air cushion, higher than working end of piston being in upper dead point. At idle stroke of percussion machine when guiding cylinder is in other limit axial position, striker is hold in front position due arrangement of opening in zone 2R of working stroke of piston directly near its working end when piston is in upper dead point. It provides short-time communication of air cushion with atmosphere.

EFFECT: enhanced reliability of idle stroke mode of percussion action machine.

2 dwg

Up!