The invention relates to the mining industry, particularly to submersible pneumatic machines percussion, for example, during drilling of large diameter. The hammer includes adapter and buxu, attached to opposite ends of the cylindrical housing with the camera forward and return passages, a hollow piston-striker and Central air tube. The housing is connected to the adapter and the panel Jack, through the slots. The adapter is connected to the panel Jack by bolts evenly positioned around the perimeter of the housing. The invention provides for reducing the complexity, energy consumption, wear of the drilling tool and increase the drilling speed through the discharge casing and threaded connections hydropercussion machine from a large axial force and torque. 3 Il. The invention relates to the mining industry, particularly to submersible pneumatic machines percussion used, for example, during drilling of large diameter.Known punchers, including the adapter and buxu attached by threaded connections at the opposite ends of the cylindrical housing with the camera forward and reverse hodg., and author. St. USSR 1081340, CL E 21 3/24, 1984).The closest to the technical nature of the claimed invention is a downhole air hammer, including the adapter and buxu attached by threaded connections at the opposite ends of the cylindrical housing with the camera forward and return passages, a hollow piston-striker and Central air tube (see ed.St. The USSR 1084437, CL E 21 3/24, 1984).The above known technical solutions have the common disadvantages. When used for drilling large diameter occur acting on them large torques and axial forces, which leads to a strong tightening of the threaded connection adapter and overlays in the housing. This leads to difficulties when disassembling hydropercussion machine. In addition, the housing hydropercussion machine has a wall of great thickness, because he himself with threaded connections is "bearing" design, providing transfer of large axial forces and torque. Increased wall thickness hydropercussion machine (without reducing the inner diameter and the saving power hydropercussion machine), reduces the distance between the casing and the borehole wall, which prevents the removal of large cusanelli energy, the increased wear of the drilling tool and reduces the speed of drilling.The invention solves the problem of reducing the labor intensity, energy intensity, wear of the drilling tool and increase the drilling speed through the discharge casing and threaded connections hydropercussion machine from a large axial force and torque, as well as removal of large fractions of drill cuttings from the borehole bottom.To achieve the objectives of the claimed invention - pneumonic contains the following, expressed in definite concepts essential features, the combination of which is aimed at solving only one problem.The invention provides an adapter and buxu, attached to opposite ends of the cylindrical housing with the camera forward and return passages, a hollow piston-striker and Central air tube.In relation to the closest analogue of the claimed has the following distinctive features. The adapter and Buchs connected to the housing through the slots and between themselves by bolts, evenly spaced on the outside perimeter of the building.This set of features reduces the complexity, power consumption, wear of the drilling tool and increases the IC is Bowie connect it with the adapter and the panel Jack. These threaded connections are strongly decelerated, which makes their subsequent disassembly. Unlike the prototype, the complexity of disassembly offer hydropercussion machine does not depend on the magnitude of the transmitted efforts through the hammer, because there is no threaded connection between the adapter body and panel Jack.Reduced transfer of large axial forces and torque directly through the housing hydropercussion machine. Thus, the burden is perceived by bolts, which allowed to reduce the wall thickness of the case: by reducing only the outer diameter, i.e., without reducing the power hydropercussion machine. Increasing the distance between the borehole wall and the outer surface of the housing hydropercussion machine, which enables you to move from the bottom hole larger pieces of drill cuttings, to exclude their pereselenie, to reduce the power consumption, the wear of the drilling tool and to increase the drilling rate.According to the available data set of essential features that characterize the essence of the claimed invention is not known from the prior art, which allows to make a conclusion about conformity of the invention, the criterion of "novelty."According to the authors, the essence of the claimed invention should not be for sa received technical result set of features, which is distinguished from a close analog of the claimed invention, which allows to make a conclusion about its compliance with the criterion of "inventive step".The set of essential features that characterize the invention, in principle, can be reused in the construction of the punchers. This reduces the labor intensity, energy intensity, wear of the drilling tool and increases drilling speed. Thus, it can be concluded according to the invention, the criterion of "industrial applicability".The invention is illustrated by drawings. In Fig.1 shows a General view hydropercussion machine; Fig.2 - section a-a of Fig.3 - section B-bThe hammer contains the adapter 1 and buxu 2, mounted on the opposite ends of the cylindrical housing 3 with 4 cameras direct and reverse 5 passages, a hollow piston-striker 6 and the Central air tube 7. The adapter 1 is connected to the housing 3 through the slots 8, and Buchs 2 - through slots 9. The adapter 1 is connected to the panel Jack 2 by bolts in the form of studs 10 on the left and right hand threads at opposite ends. The studs 10 are made with hexagonal concentration under the key located in the annular groove 11 of the axle box 2. Chuushin way. The compressed air passes through the Central hole 12 of the adapter 1, the tube 7, the holes 13 and 14 into the chamber 5 reverse. The piston 6 rises to the top position, the hole 14 is closed, and the opening 13 of the tube 7 is connected with the bore 15 of the piston 6. At the same time, compressed air from the pipe 7 into the chamber 4 forward stroke. The piston 6, making the stroke, it goes down to blow on the crown 16, which destroys the bottom of the borehole 17. Then the cycle repeats.The torque is transmitted from the adapter 1 to the PTC site 2 at the same time: through the grooves 8, 9 of the connection body 3 and through the studs 10 and the axial force from the adapter 1 to buochs 2 simultaneously through the housing 3 and through the studs 10. It is possible to reduce the load on the housing 3, and therefore, to reduce the thickness of the wall of the casing 3 by reducing the outer diameter of the housing 3. To save power hydropercussion machine the inner diameter of the housing 3 remains unchanged.Reducing the outer diameter of the housing 3 has allowed to increase the distance "S" between the surface of the body 3 and the wall of bore 17.
ClaimsThe hammer, including the adapter and buxu, attached to opposite ends of the cylindrical body is trichosis fact, what adapter and Buchs connected to the housing through the slots and between themselves by bolts, evenly spaced on the outside perimeter of the housing.
FIELD: mining industry.
SUBSTANCE: device has body, striker with central through channel, separating body hollow on chambers of straight and backward drive, air-distributing system, containing stepped feed-discharge valve, valve saddle with apertures for feeding straight action chamber, central pipe, apertures in the body, connected to behind-valve hollow, connected to slit channel. Air-distribution system additionally has discharge channel, positioned between valve saddle and end of greater step of feed-discharge valve, connected on one side to straight action chamber through valve saddle apertures, and on the other side - to slit channel through ring-shaped channel, formed between body and outer surface of greater step of feed-discharge valve.
EFFECT: higher efficiency, broader functional capabilities.
2 cl, 2 dwg
FIELD: mining industry.
SUBSTANCE: device has cylinder, connected on one side to sub, having a wall with central aperture, on the other side - to head, having a chisel, piston with central channel, with thickened middle portion, striking portion and a tail piece. Striking portion enters axial channel and by a spring is pressed to chisel tail piece, tail piece enters central aperture of sub. On the end inside the tail piece a bushing is fixed with longitudinal closed slits, connected to radial apertures. In an axial channel of piston a spring-loaded tubular valve is placed with solid wall and side ports on both sides of wall and with ring-shaped clamp. In central channel of piston recesses are made on three levels. Closest one to sub and farther recesses by F-shaped channels are connected to each other and to hollow of cylinder, directed to head. Middle recess by L-shaped channels is connected to hollow of cylinder, directed to sub. During operation of striker valve ports are combined with recesses and provide for feeding of working agent in cylinder hollow for performing idle runs or working runs with output of all processed agent into well face without additional losses.
EFFECT: higher efficiency.
FIELD: trenchless underground pipe laying.
SUBSTANCE: invention relates to trenchless laying of underground pipelines of considerable length and preset trajectory. Proposed punch includes body accommodating reciprocating striker with bore in rear part, spool getting into bore by larger diameter step with sliding. Spool consists of branch pipe secured in rear part of body and sleeve connected with branch pipe for sliding and spring-loaded relative to rear part of body with at least one radial pin getting into ring zigzag slot made on part fixed on body. Sleeve of spool encloses front part of its branch pipe, being spool larger diameter step, and said ring zigzag slot is made on outer surface of branch pipe. According to first design version, at least one radial hole is made on front parts of branch pipe and spool sleeve. According to second design version, flats are made additionally on outer surface of branch pipe displaced towards rear part of branch pipe. According to third design version each second cavity on rear side of ring zigzag slot is extended to side of rear part of branch pipe.
EFFECT: improved reliability and increased service life owing to making of pneumatic punch of closed type with reversing of delivery of compressed air simply by switching off and on.
7 cl, 19 dwg
FIELD: hydraulic machine building.
SUBSTANCE: proposed distributor has housing with control channel and working liquid inlet and outlet channels, shutoff-control element with shank from side of control channel installed in housing for tightening in initial position and longitudinal displacement for changing direction of working liquid flow. Inner space of housing is divided by partition with hole into hydraulic and pneumatic chambers, the latter being filled with compressed gas at pressure Pg, and shutoff-control element is provided additionally with shank from side of pneumatic chamber passing into chamber through hole in partition and provided with head on end face. Said head is pressed to surface of partition by pressure Pg of compressed gas when shutoff-control element is in initial position.
EFFECT: improved reliability.
3 cl, 2 dwg
FIELD: well drilling equipment, particularly fluid operated hammers.
SUBSTANCE: hydraulic hammer comprises housing, rod installed in the housing by spline which is restricted from falling out by bush. Bush is retained by spring. The rod is provided with sealing means. Spring-loaded hammer is arranged inside the housing. The hammer has through channel and sealing means. Crankshaft is connected to the rod by finger. Cross-over valve is connected to crankshaft by pin. The housing is provided with sub arranged in upper part thereof. Formed in outer hammer part is groove adapted to receive spline arranged on the housing. In initial position spring is released. In upper hammer position the valve is closed. After circulation restoring valve is restricted from opening by hydraulic forces and valve opening takes place only as a result of downward hammer movement, when α angle decreases. When hammer is installed in upper position the valve in closed and hydraulic impact takes place so that hammer applies impact action onto the rod. Time of valve opening and closing and hydraulic impact time are associated with hammer movement time. Hammer and cross-over valve are moved in time.
EFFECT: increased duration of closed valve state and, as a result, hammer impact amplitude and power.
FIELD: percussion mechanisms, particularly pneumostrikers used for well drilling during open cast mining.
SUBSTANCE: pneumostriker comprises cylinder, adapter, head with drilling bit secured in the head, spring-loaded piston with shank and central channel having widened part and striking part. Borings arranged in three layers are created in central channel of the widened piston part. Slide is installed in the central channel. Piston shank may be inserted in central orifice of the adapter. The slide is tubular and provided with solid partition and side windows arranged from both partition sides. The slide is pressed to stops installed in central piston channel with spring secured between the slide and inner ledge created in area of central piston channel reduction. Bush with flange resting upon slide end facing the head is located inside slide spring. The bush is installed so that bush neck may pass in central channel of striking piston part and in axial bit channel. Bush installed in the spring creates cavity in central piston channel. The cavity is communicated with piston underside by radial orifices.
EFFECT: increased operational efficiency due to improved energy carrier distribution unit.
FIELD: percussion mechanisms used as drilling means to drill wells for underground and opened mineral deposit development.
SUBSTANCE: air hammer comprises cylinder, connected with adapter from one cylinder side. The adapter is provided with peripheral and central orifices. Another cylinder end is connected with head having drilling bit and purging orifices. Piston with central widened part is arranged inside the cylinder. Piston has shank formed on the first piston end and adapted to be inserted in central channel of valve box located between the piston and the adapter. Another piston part is provided with striking means passing in central head channel. Piston comprises central channel and tubular slide with solid partition and side windows located in the central channel. The side windows are formed from both sides of the partition. Inner central channel surface has two grooves formed one over another. Upper groove is communicated with underside piston cavity by -shaped channel. Lower groove is connected with piston head cavity by -shaped channel. In working position slide windows alternately communicate with upper and lower grooves to supply energy carrier medium to head or underside piston cavities so that air hammer performs working or idle stroke. Slide is moved by lower spring and stepped valve box having stepped central channel provided with tubular energy carried medium distributor. The distributor has bead, which alternately closes -shaped channel outlets communicated with central channel of valve box and supply energy carrier medium to head piston cavity on the shortest route. Piston shank switches-over distributor to supply energy carrier to provide working stroke of the piston, wherein at the end of idle stroke shank creates distributor displacement pulse at low velocity of shank impact upon lower end of distributor bead along with following applying manifold pressure action to the bead.
EFFECT: elimination is threaded shank connection with piston.
FIELD: mining, particularly percussion mechanisms used to drill wells.
SUBSTANCE: air hammer comprises cylinder connected to sub from the first cylinder side and to head from another side thereof. The sub comprises partition with central orifice. The head is provided with chisel retained in the head. Cylinder is divided into two cavities communicated with hole annuity through slot-like orifices. One cylinder cavity faces head provided with inclined channels to supply working agent to well bottom. Another cavity faces the sub. Piston has central channel, widened section and striking part passing in axial head channel. Widened piston section is provided with borings and is adapted to receive slide. Spring is installed between sub and piston end to press the piston to chisel shank. Piston is provided with shank, which may be inserted in central sub orifice. Borings are created in central piston channel and are arranged at three levels. Piston channel borings, namely one the nearest to the sub and one distant from the sub are connected one to another and to cylinder cavity facing the head by F-shaped channels. Central boring is connected to cylinder cavity facing the sub by -shaped channels. The slide is tubular and provided with solid partition arranged inside the slide and with side windows formed from both partition sides. Windows located upstream from the partition near the sub are aligned with piston boring, which is the nearest to the sub. Side windows located downstream from the partition are aligned with central cylinder boring. Distant cylinder boring is closed with cylindrical surface of tubular slide. Annular bead is formed on outer tubular slide surface over windows located near the sub. The annular bead divides the boring, which is the nearest to sub, into two cavities. One boring cavity faces piston shank, another one is communicated with cylinder cavity facing the head with F-shaped channels. The tubular slide is loaded with spring located between tubular slide and inner ledge formed in zone of central piston channel diameter reduction. Longitudinal blind cuts are created in bush secured in piston shank so that the cuts extend over outer surface and arranged from bush end facing tubular slide bead. Longitudinal blind cut openings are opened in the nearest boring cavity located over the bead, end parts thereof are aligned with radial piston shank orifices and are adapted to communicate boring cavity located over the bead with cylinder cavity facing the sub in inoperative position and with sub cavity located over partition during working travel performing.
EFFECT: increased efficiency, increased quantity of exhaust working agent to be supplied to well bottom for intensive well cleaning.
FIELD: mining, particularly rotary-percussion drilling.
SUBSTANCE: downhole hammer comprises body with discharge channels, striker, which divides body interior into working stroke chamber and return stroke chamber, distribution system having seat with orifices, shell with discharge channels and stepped valve installed between the seat and the shell. Inner valve surface and shell define back chamber located downstream of valve and communicated with atmosphere through discharge channels of the shell and the body from one side thereof. The valve back chamber is also communicated with working stroke chamber through longitudinal channel, radial channel and orifices of seat from another back chamber side. The longitudinal channel is located near lesser valve step. The radial channel is created between seat and stepped valve end. The seat has three steps. Longitudinal channel is made as slots located in lesser valve step or in medium valve step so that centering bridges are created between the slots.
EFFECT: increased impact energy due to increased striker stroke, which is provided by reduction of back pressure in working stroke chamber as striker travels in reverse direction.
2 cl, 3 dwg
FIELD: fluid operated hammers, particularly used for well drilling in construction and mining industries.
SUBSTANCE: pneumatic hammer comprises piston, which defines working and idle stroke chambers. Air-distribution system member cooperating with channels, which connect working stroke chamber with working fluid source and with atmosphere, is made as valve with separate shutoff tools. The air-distribution system member is arranged in piston pipe located from working stroke chamber side. Channel, which connects working stroke chamber with working fluid source, is made in body. Channel, which communicates above chamber with atmosphere, is made in piston. Valve, which connects idle stroke chamber with working fluid chamber, is arranged in piston pipe and in piston.
EFFECT: improved technological efficiency of air-distribution system arrangement due to decreased number of mating side surfaces of device components.
2 cl, 1 dwg