The hammer

 

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-b

The 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.

Claims

The 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.

 

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