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Pneumatic percussion mechanism Percussion mechanism includes a cylindrical housing with a sleeve and outlet channels, a working tool with a shank, a stepped piston with stock and main parts with a central channel and a sleeve with a longitudinal channel-slot and a hole in the stock part of the piston, which divides the cylindrical housing cavity into an annular chamber on the side of stock part of the piston, an idle stroke chamber on the side of the working tool shank and an annular distributing chamber in the sleeve of the cylindrical housing on the side of the piston stock part, an annular flange with air supply holes to the annular distributing chamber and a through axial channel for passage of the rod with a shutoff valve, a fastening shell fixed relative to the cylindrical housing, a network air chamber formed with the shell with and air supply channel and an annular flange, which is fixed in the through axial channel of the annular flange, the rod with the shutoff valve that constantly interacts with a longitudinal channel-slot in the hole of the sleeve located in the central channel of the piston, which connects periodically, depending on position of the stepped piston, the annular distributing chamber and the idle stroke chamber to each other. In the section of interaction of the annular stage of the cylindrical housing sleeve with the stock part of the piston there is an annular gap with a design flow cross-section, and on stock part of the piston there is a throttling bypass channel-slot that constantly connects the annular distributing chamber to the annular chamber. |
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Pneumatic percussion mechanism Mechanism includes a cylindrical housing with a sleeve and outlet channels, a working tool with a shank. A stepped piston with stock and main parts with a central channel and a sleeve with a longitudinal channel-slot and a hole in a stock part of the piston, which divides the cylindrical housing cavity into an annular distributing chamber in the sleeve of the cylindrical housing on the side of stock part of the piston and the idle stroke chamber on the side of the working tool shank. An annular flange with air inlet holes to the annular distributing chamber and a through axial channel for passage of a rod with a shutoff valve, a fastening shell fixed relative to the cylindrical housing. Network air chamber is formed with a fastening shell with an air supply channel and an annular flange fixed in the through axial channel of the annular flange, the rod with the shutoff valve, which constantly interacts with the longitudinal channel-slot in the hole of the sleeve located in the central channel of stepped piston, which connects periodically, depending on position of the stepped piston, the annular distributing chamber and the idle stroke chamber to each other. In the section of interaction of the annular stage of the cylindrical housing sleeve with the stock part of the piston there is an annular gap with a design flow cross-section, and on inner side surface of the sleeve there is a throttling bypass channel-slot along a generatrix, which constantly connects the annular distributing chamber to the annular chamber. |
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Pneumatic device of impact action includes a cylindrical body with a bushing and outlet channels, a working tool with a tail, a stepped piston with stem and main parts with a central channel and a bushing with a longitudinal channel-slot and a hole in a stem part of the piston, which separates the cavity of the cylindrical body into a circular distribution chamber in the bushing of the cylindrical body at the side of the stem part of the piston and an idle chamber at the side of the working element tail, a circular flange with holes of air supply into the circular distribution chamber and a through axial channel for passage of a rod with a stop valve, a fastening sleeve fixed relative to the cylindrical body, a network air chamber formed by the fastening sleeve with the air supply channel and the circular flange, a rod with a stop valve fixed in the through axial channel of the circular flange, which continuously interacts with the longitudinal channel-slot in the hole of the bushing arranged in the central channel of the stepped piston, which connects from time to time, depending on the stepped piston position, the circular distribution chamber and the idle chamber to each other. In the section of interaction of the circular stage of the bushing of the cylindrical body with the stem part of the piston there is a circular gap with a rated throughput section, and on the inner side surface of the bushing there is a throttling helical channel-slot arranged along its entire length, which continuously communicates the distribution chamber with the circular chamber. |
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Pneumatic impact mechanism is designed for application in impact machines of different purpose. It comprises a cylindrical body with a bushing and outlet channels, a working tool with a tail, a stepped piston with stem and main parts with a central channel and a bushing with a longitudinal channel-slot and a hole in the stem part of the piston, which separates the cavity of the cylindrical body into a circular chamber at the side of the stem part of the piston, an idle chamber at the side of the working tool tail and a circular distribution chamber in the bushing of the cylindrical body at the side of the stem part of the piston, a circular flange with holes of air supply into the circular distribution chamber and a through axial hole for passage of a rod with a stop valve, a fastening sleeve fixed relative to the cylindrical body, a network air chamber formed by the sleeve with an air-supply channel and a circular flange, a rod with a stop valve fixed in the through axial channel of the circular flange, which permanently interacts with the longitudinal channel-slot in the hole of the bushing being located in the central channel of the piston, connecting periodically, depending on the stepped piston position, the distribution chamber and the idle chamber between each other. In the section of interaction of the circular step of the cylindrical body bushing with the stem part of the piston there is a circular gap with a rated throughput section, and on the stem part of the piston there is a throttling relief helical channel-slot, which permanently communicates the distribution chamber with the circular chamber. |
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Pneumatic impact mechanism comprises a cylinder with outlet channels, a working tool with a tail, a stepped striker with a stem and a main parts with a central through channel and a bushing with a slot channel in the stem part of the striker, separating the cylinder cavity into an idle chamber at the tail side, a distribution chamber at the side of the stem part of the striker, a circular chamber of a forward stroke, a network air chamber, a circular cover installed between the network air chamber and the distribution chamber with a channel of air supply from the network air chamber into the distribution chamber, a rod rigidly fixed relative to the cover with a piston part, which is permanently installed in a central through channel of the striker, interacting with the slot channel of the bushing, connecting periodically, depending on the position of the stepped striker, the distribution chamber and the idle chamber between each other. The distribution chamber and the circular chamber of the forward stroke are permanently communicated to each other with a circular throttling channel, coaxially to the distribution chamber there is a sleeve installed, forming an additional circular chamber of an attached volume, permanently communicated with a relief channel to the circular chamber. |
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Pneumatic device of impact action to form wells in soil Device comprises a hollow body with a stepless striker having a central through hole separating the body cavity into working and idle chambers, a central tube interacting with the central through channel of the striker, a bushing with a permanently open inlet channel and a hose to supply compressed air from a network, a cover with a hole to let through the central tube, a prechamber of network air, a tail entering the idle chamber, the tail and the bushing are arranged with through channels to let through the central tube sealed and fixed relative to the tail and the bushing, in the central tube there is an additional tube installed coaxially with a circular gap with a radial outlet channel and with fixation along its ends relative to the central tube. In the additional tube there are slots sealed and coupled with the surface of the central tube, forming at the same time a separately longitudinal throttling channel of air inlet into the idle chamber, and an air outlet channel from working and idle chambers, besides, the longitudinal throttling channel at the side of the idle chamber and the prechamber is equipped with radial channels in the central tube. |
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Air impact mechanism consists of cylinder case with outlet channels and installed in it bushing and of stepped striker with rod and main parts, with through orifice and bushing in rod part with channel-slot dividing cavity of case to chamber of idle run on side of shank end and circular working chamber. Further, the mechanism consists of a circular flange with channels supplying air from a network camera, of the rod rigidly secured relative to the circular flange and continuously inserted in a through orifice of the striker and interacting with the channel-slot of the bushing and of a working tool with the shank end. The impact mechanism has a circular distributing chamber on one side communicated with the network camera by means of air supplying channels of the circular flange and on another side continuously communicated with the circular chamber of working stroke by means of a circular throttle channel formed with a bushing of the impact mechanism and a rod part of the striker. Also, the rod is alternately communicated depending on position between the stepped striker of the circular distributing chamber and the idle stroke chamber. |
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Pneumatic impact-action device for development of well in soil Device includes hollow housing with longitudinal throttle channel, stepless hammer arranged in the housing and having central through channel dividing the housing cavity into operating and no-load stroke chambers, central tube interacting with central through channel of hammer, threaded sleeve with constant open inlet channel and hose for supply of compressed air from network; cover with peripheral channel, radial bypass channel and through central hole for passage of the tube; pre-chamber of network air, which is formed between threaded sleeve and cover and interconnected via peripheral channel and longitudinal throttle channel to idle stroke chamber; shank and threaded sleeve, which are provided with through channels for passage of central tube installed in central hole of cover with an annular gap forming an annular throttle inlet channel of working stroke chamber. In central tube there installed coaxially with annular gap is additional tube with radial outlet channel and with fixation along its edges relative to central tube; at that, radial outlet channel in additional tube is made at acute angle to its axis with the top on the threaded sleeve side, and is offset along screw line relative to radial outlet channel of central tubes towards threaded sleeve. Additional tube protects central tube against possible deformations which appear on the side of ropes, chains, etc. of rigid elements, which are passed through the device, as well as soil particles, and which lead to jamming of the hammer and shutdown of the device operation. |
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Device for making wells in soil Device for making wells in soil includes body, anvil, striker, tail, accessories for air relief in process of direct and reverse travel of pneumatic drill and fixation of hose. Along anvil axis there is a channel arranged, besides the end of anvil near bottomhole is directly plugged, and channel communicates to adjacent layers of soil with the help of one ore several holes in side part of anvil. |
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Proposed perforator comprises a casing with an air feed inlet, cylinder communicating with the aforesaid inlet via an appropriate system of air ducts, impact action piston with at least one part making an interface with the aforesaid cylinder, air flow control appliances and water feed inlet. Note also that the perforator incorporates at least one pair of contact surfaces whereon appropriate parts moving relative each other get into contact. The said impact action piston can reciprocate inside the aforesaid cylinder. The proposed device comprises water channels communicating with the aforesaid water feed inlet, as well as those feeding water or air saturated with water during perforator operation to, at least, aforesaid interface between the impact action piston and the cylinder for wetting that is lubing the said contact surfaces. |
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Air percussion device with throttle air distribution Air-operated device incorporates an air line chamber, a hollow cylinder with its side wall furnished with outlet channels, a striker arranged in the said hollow cylinder and dividing it into idling and operating chambers, a cover, a barrel, a pipe with always-open throttle channel and an operating tool. The inlet throttle channel communicates the air line chamber with the idling chamber. A non-through boosting chamber is arranged in the cylinder wall on the idling chamber side. The striker is furnished with inner and outer chambers-grooves representing an alternating ledges and recesses their outline being formed by straight or curvilinear lines and with a bypass channel for the inner and outer chambers-grooves to intercommunicate. The aforesaid pipe side surface is furnished with a radial channel representing a vertical slot to intermittently communicate the said chambers-grooves in the striker with the pipe inlet throttle channel. The latter incorporates a cut-in channel-throttle arranged on the tool side. |
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Air hammer with throttle air distribution Air hammer incorporates a hollow cylinder, a striker with a central channel arranged inside the aforesaid hollow cylinder and dividing it into idling and operating stroke chambers, a movable pipe with an always-open inlet throttle channel, a thrust collar and a step, a cover with a collar and a hole, the cylinder barrel and working tool. The movable pipe passes through the striker central channel to communicate the air line chamber with the idling chamber via the aforesaid always-open inlet throttle channel. The movable pipe thrust collar represents an annular barrel with a limiting annular collar resting on the cover. An circular boosting chamber is formed between the cylinder barrel side surface and the cover collar. The annular barrel is furnished with one or several through throttle channels with a designed flow section. The cylinder walls are provided with the boosting radial channels communicating the annular boosting chamber with the idling chamber. The cover collar incorporates a throttle channel intercommunicating permanently the air line and boosting chambers. |
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Pneumatic hammer with throttle type distribution of air In pneumatic hammer with throttle type air distribution surfaces engaging one to other are provided with annular turnings. The last are arranged in portions of mounting surfaces of striker and tube in such a way that length values of turning portions along generatrix are less than length values of generatrix portions of mounting surfaces of striker at side of cylinder and at side of tube. |
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Pneumatic hammer with throttle type air distribution In pneumatic hammer with throttle type air distribution between wall of sleeve and outer lateral surface of cylinder there is annular non flow-through afterburner. Boost ducts providing cyclic communication of afterburner with working-stroke chamber are made in the form of radial ducts in wall of cylinder. Spacing between end of cover turned to working-stroke chamber and cut-off edge of cut of boost duct at side of adjacent outlet duct is cyclically closed by means of striker and it is less than length of striker. Cover has additional throttling calibrated duct for mutual communication of constant distributing-network chamber with non flow-through afterburner. |
Another patent 2513493.