Installation for drilling solid rock

 

(57) Abstract:

The invention relates to mining, in particular to installations for drilling in hard rocks, which contain a shaft pivotally connected to the frame and rotatable about the first axis, the lifting cylinder between the boom and the frame mounted on the other end of the boom pivotally connected to it the input beam, pivoting on a second axis parallel to the first axis, and the rotary cylinder between the feed beam and boom. With this arrangement, the lifting cylinder contains three cylindrical cavity, of which the first and the second can be connected with a source of working fluid to raise and lower the boom. The third cylindrical cavity is located inside the hollow piston rod and the cylinder is fixed servopiston extending inside the piston rod. The third cylindrical cavity is connected with a rotary cylinder, with his first cylindrical cavity and the second cylindrical cavity of the rotary cylinder may be connected or with a source of working fluid, or its receiver simultaneously with the first cylindrical cavity of the lifting cylinder. The invention provides improved performance is tion relates to an apparatus for drilling solid rock and in particular to a device boom installation for drilling solid rock.

From the author's certificate USSR N 589386 (CL E 21 C 11/02, 1978) known device for drilling hard formations containing a shaft pivotally connected to the frame and mounted with a possibility of rotation about the first axis, the other end of the boom pivotally connected with it by submitting a beam that is installed with the possibility of rotation about the second axis, parallel to the first axis, the lifting cylinder between the boom and the frame for rotating the boom relative to the frame, a rotary cylinder between the feed beam and the boom to rotate the feed beam relative to the boom and hoist cylinder includes first and second cylindrical cavity, in which to rotate the arrows in different directions relative to the frame is supplied working fluid, and a rotary cylinder also includes a corresponding cylindrical cavity that served the working fluid to rotate the feed beams in different directions relative to the boom, the piston rod of the lifting cylinder hollow hoist cylinder contains a separate fixed piston part of the piston rod, and the third cylindrical cavity within the piston rod is completely separate from the first and second cylindrical cavities lifting cylinder is at work requires alignment of the feeding beam drilling machine by turning the arrows between the frame and the feed beam in a horizontal or vertical position to enter the drill stem in new probleme hole, why use so-called parallel automation, in which the rotation of the boom relative to the frame offset in the connections between the feed beam and boom with separate servocylinders, when the rotation of the boom causes a change in the length of one level, which again causes movement of the working fluid in servocylinder between the boom and the feeding beam, so that accordingly the length of the cylinder, causing the input beam is rotated in the opposite direction relative to the end of the boom compared to the rotation of the boom relative to the frame.

In order to ensure parallelism, it is necessary to separate hydraulic cylinders are connected so that they form a closed circuit. This design, however, is expensive and requires additional space around the joints, while increasing the number of parts subject to wear. Another problem is that, since the function of these cylinders should be secured by using separate controlled pressure check valves, closing transmission channel pressure in the cylinders, so that the possible rupture of the hose prevents the Ana, is harmful to the function of turning arrows, because it resists turning up until the pressure reaches a sufficient level. As a result, the extreme angular positions of the boom management may lose smoothness, and in some cases may even be necessary to change the input beam into a more acceptable state of equilibrium in order to ensure proper control. It also raises the complexity of drilling operations and decreases the possibility of using the machine.

The technical task of the present invention is to propose a device which eliminates the problems typical of the known technical solutions, and offer simple, easy and reliable functioning of the parallel control of the feeding beam.

This technical problem is solved due to the fact that the apparatus for drilling hard formations containing a shaft pivotally connected to the frame and mounted with a possibility of rotation about the first axis, the other end of the boom pivotally connected with it by submitting a beam that is installed with the possibility of rotation about the second axis, parallel to the first axis, the lifting cylinder between the boom and the frame for rotation of the boom from the boom, moreover, the lifting cylinder includes first and second cylindrical cavity in which to rotate the arrows in different directions relative to the frame is supplied working fluid, and a rotary cylinder also includes a corresponding cylindrical cavity that served the working fluid to rotate the feed beams in different directions relative to the boom, the piston rod of the lifting cylinder hollow hoist cylinder contains a separate fixed piston part of the piston rod, and a third cylindrical cavity within the piston rod is completely separate from the first and second cylindrical cavities lifting cylinder and connected to the first cylindrical cavity of the rotary cylinder, according to the invention the first and second cylindrical cavity of the rotary cylinder is connected or with a source of working fluid, or a receiver, respectively, simultaneously with the third cylindrical cavity within the piston rod and with the first cylindrical cavity of the lifting cylinder, as a result, when the lifting cylinder retracts, respectively, moves the rotary cylinder, and when the lifting cylinder is moved, extendible revolving cylinder, so that both ovariotomy cylinder connected to the third and fourth lines of the working fluid, to rotate the rotary cylinder independently of the lifting cylinder, and managed pressure check valves being connected to each line of the working fluid is controlled by another line of the working fluid, and a third cylindrical cavity of the lifting cylinder is connected to the connecting line between the first cylindrical cavity of the rotary cylinder and the first non-return valve, with the lifting cylinder is controlled by a pressure relief valve connected between its first and second cylindrical cavities and the first and second lines of the working fluid leading to it, and these valves keep lifting cylinder in a stationary position, while it is not filed with the working fluid, after this, the second cylindrical cavity of the rotary cylinder are connected through a Shuttle valve pressure with the first line of the working fluid leading into the first cylindrical cavity lifting cylinder with the inlet side of the bypass valve, the line pressure control Shuttle valve pressure respectively connected with the second line of the working fluid, leading to the second cylindrical cavity of the lifting cylinder, the intake side of p is yaytsa with the lines of the working fluid leading in the rotary cylinder, between the managed pressure check valves and rotary cylinder, with the connecting line leading to the third cylindrical cavity of the lifting cylinder is connected with a line leading into the first cylindrical cavity of the rotary cylinder between the check valve and the bypass valve, and a Shuttle valve connected with lines working fluid lifting cylinder, respectively, is connected with the line fluid, leading to the second cylindrical cavity of the rotary cylinder between the check valve and the bypass valve.

Preferably also the lifting cylinder is connected below the arrows between the boom and the frame, and accordingly, the rotary cylinder is connected above the arrows between the boom and the feeding beam.

Advantage technical solutions, which are the subject of the present invention, is that when lifting beam upward for lifting can be used large area, because the pressure of the supplied working fluid provides a parallel effect in the two cylindrical cavities. Similarly, when lowering cylinder pressure, providing retraction of the cylinder, there is parallel protivopolojnoe impact to compensate the influence of the weight of the boom. This results in improved control when lifting and lowering the boom while maintaining the required parallelism for feeding lumber.

The invention will be described in more detail with reference to the accompanying drawings, on which:

in Fig. 1 schematically shows a subject of the present invention, the device for controlling the movements of the vertical boom and the feeding beam;

in Fig. 2 schematically shows a hydraulic connection device which is the subject of the present invention.

In Fig. 1 schematically shows the arrow 1, pivotally connected with the frame 2 and rotatable about the first horizontal axis 3. Hoist cylinder 4 between the boom 1 and the frame 2 is connected by its ends by means of compounds 5 and 6 with the frame and the boom, respectively. The other end of the boom 1 contains the input beam 8, pivotally connected to the second horizontal axis 7 of the drill rod 9 moving along the feed beam 8. The rotary cylinder 10 between the feed beam 8 and the shaft 1 is connected with compounds 11 and 12 with the feed bar 8 and the shaft 1, respectively.

In Fig. 2 schematically until the 10. As clearly shown in the drawing, the lifting cylinder 4 contains three cylindrical cavity, the piston 4a moves inside the lift cylinder 4. On both sides of the piston 4a are cylindrical cavity 13a and 13b, in which the flow of the operating fluid is made depending on whether the movement of the piston 4a inside the lift cylinder 4 or from it. The piston rod 4b is hollow and the lift cylinder 4 has inside of him, in the middle, still servopiston 4c extending in the piston rod 4b, and a third cylindrical cavity 13c inside the piston rod 4b is increased or decreased depending on the movement of the piston 4a relative to the cylinder 4. The first and second lines of the working fluid 14a and 14b are respectively in the cylindrical cavity 13a and 13b.

The third and fourth lines of the working fluid 15a and 15b are connected with the lifting cylinder 10 for a single rotation of the feeding beam 8, and these lines are connected through a managed pressure check valves 16a and 16b managed pressure relief valves 17a and 17b of the rotary cylinder, and further with the first and second cavities of the rotary cylinder 10 to the working fluid 18a and 18b, respectively. Submission rubocki follows the input beam 8 relative to the boom 1. The third cylindrical cavity 13c inside the piston rod 4b is connected via a connecting line 19 between the check valve 16a and a by-pass valve 17a of the third line of the working fluid 15a. Accordingly, lines 14a and 14b of the working fluid lifting cylinder 4 contain the bypass valves 20a and 20b. The first line 14a of the working fluid lifting cylinder is connected through a controlled pressure Shuttle valve 21 between the managed pressure check valve 16b, and a by-pass valve 17b of the fourth line 15b of the working fluid and the control pressure line Shuttle valve 21 is connected with the second line 14b of the working fluid. The bypass valves 14a, 17b and 20a, 20b are designed to hold the cylinders 10 and 4 in a stationary position, i.e., hydraulically closed during those periods when the working fluid is in no way served in any of them. In addition, in the event of an overload, they allow the working fluid to prevent breakage of the device. Their purpose and use is evident in the shared fully known by themselves, therefore, are not described here in more detail.

When the working fluid enters the first cylindrical cavity 13a of the lifting cylinder 4, the liquid vitaliyalysenko cavity 13b through the bypass valve 20b, outdoor pressure that is transmitted over the first line 14a of the working fluid in the second line 14b of the working fluid and then into the reservoir for the working fluid. At the same time increased the size of the third cylindrical cavity 13c inside the piston rod 4b. The working fluid flowing in the line 14a, acts through the Shuttle valve 21 on the fourth line 15b of the working fluid, i.e., the line of the rotary cylinder 10 and then through the check valve in its bypass valve 17b, the rotary cylinder 10 in its cylindrical cavity 18b. The working fluid pressure is transmitted through the piston 10a of the rotary cylinder 10 into the cylindrical cavity 18a and forth through the bypass valve 17a opened by the pressure in line 15b, the connecting line 19 in the cylindrical cavity 13c of the piston rod 4a of the winding cylinder 4, and the effect of the pressure of the working fluid in the cylindrical cavities 13a and 13c is parallel and thus facilitates the turning up of the boom 1, despite its weight. Simultaneously with the flow of the working fluid, it pushes the piston 10a of the rotary cylinder 10 to the outside of the rotary cylinder 10 and rotates so the input beam 8 relative to the boom 1 to the extent that the lifting cylinder 4 rotates the arrow indecency cavity 13b lifting cylinder 4, causing the piston 4a is drawn into the lifting cylinder 4, and the working fluid flows from the cylindrical cavity 13a through the bypass valve 20a in the reservoir for the working fluid. Simultaneously with the compression cylinder reducing the volume of the cavity increases the pressure in the third cylindrical cavity of the lifting cylinder, and this pressure causes the flow of working fluid through line 19 into the cylindrical cavity 18a of the rotary cylinder 10, causing shortening thus the rotary cylinder 10. In accordance with this, the working fluid flows from the second cavity fluid 18b of the rotary cylinder 10 through a managed pressure Shuttle valve 21 is opened by the pressure in line 14b of the working fluid in the reservoir for the working fluid. Thus, weakens the force of rotation of the boom 1 down, and the boom 1 becomes slower and controlled. When the retraction of the piston 4a of the winding cylinder 4 into the cylinder and thus shortening of the cylinder, the piston 10a of the rotary cylinder 10 is drawn into it, and shortening of the entire rotary cylinder corresponds to the change in length of the lifting cylinder 4, and thus the input beam 8 is rotated in the same degree as A the liquid flows from the second cylindrical cavity 18b of the rotary cylinder 10 through the bypass valve 17b, outdoor pressure from line 19, and then through a controlled pressure Shuttle valve 21 is opened by the pressure acting in the line 14b lifting cylinder 4, in line 14a and later in the reservoir for the working fluid.

If desired, the rotary cylinder 10 can be deployed to rotate the feeding beam in the other direction without turning the lifting cylinder 4 by feeding the working fluid in the third and fourth lines 15a and 15b of the working fluid. In this case, when the flow of the working fluid in the line 15a it flows through the check valve 16a and forth through the bypass valve 17a in the cylindrical cavity 18a, while the piston 10a is included in the cylinder 10. Similarly, the working fluid flows from the cylindrical cavity 18a through the bypass valve 17b opened by the pressure of the working fluid flowing through line 15a, and through the check valve 16b in line 15b and later in the reservoir for the working fluid. Similarly, when the working fluid enters the line 15b, the opposite actions occur when the piston 10a is pushed out from the rotary cylinder 10 and pushed the working fluid flows through line 15a in the reservoir for the working fluid. Valves used to control the lifting cylinder 4 and Povoa known and through which the working fluid, from a source of working fluid, such as a pump for the working fluid may be directed in one of the lines at the same time when another line is similarly connected with a non-pressurized reservoir for the working fluid or low pressure. Such control valves and their purpose and use of a fully known in themselves and are therefore not described in more detail.

In the above description and in the drawings the invention is described only as an example and in no case is not limited to them. Although in the description and in the drawings shown only the parallel action of the boom 1 vertically and required to implement the arrangement, it is obvious that the same construction can be applied also to control the displacements and rotations of the boom 1 in the horizontal plane. It is also clear that although not shown the usual safety and similar valves, they can be used by known methods and can be combined with the subject invention by the layout without changing the nature or essence of the invention. Methods of feeding and pumping the working fluid can also be provided by any known p is RSNA, United with the specified cylindrical cavity of the rotary cylinder 10 does not need to be equal, because the size of their movements and cross-sectional area can be chosen in various ways, provided that the amount of bias of the working fluid and the dimensions of the triangles formed by the cylinder joints and rotary joints, i.e. triangles 4,5,6 and 7,11,12, respectively, are sufficiently similar so that a change in the angle between the boom 1 and the frame 2 leads to a corresponding change in the angle between the feed beam and the boom 1 in the opposite direction.

1. Installation for drilling hard formations containing a shaft pivotally connected to the frame and mounted with a possibility of rotation about the first axis, the other end of the boom pivotally connected with it by submitting a beam that is installed with the possibility of rotation about the second axis, parallel to the first axis, the lifting cylinder between the boom and the frame for rotating the boom relative to the frame, a rotary cylinder between the feed beam and the boom to rotate the feed beam relative to the boom and hoist cylinder includes first and second cylindrical strips, in which to rotate stie corresponding cylindrical cavity, that served the working fluid to rotate the feed beams in different directions relative to the boom, the piston rod of the lifting cylinder hollow hoist cylinder contains separate fixed piston part of the piston rod, and a third cylindrical cavity within the piston rod is completely separate from the first and second cylindrical cavities lifting cylinder and connected to the first cylindrical cavity of the rotary cylinder, wherein the first and second cylindrical cavity of the rotary cylinder is connected or with a source of working fluid or receiver, respectively, simultaneously with the third cylindrical cavity within the piston rod and with the first cylindrical cavity of the lifting cylinder, as a result, when the lifting cylinder retracts, respectively, moves the rotary cylinder, and when the lifting cylinder is moved, extendible revolving cylinder, so as to provide alignment of the feed beam, regardless of boom angle.

2. Installation under item 1, characterized in that the third and fourth lines of the working fluid is connected to the rotary cylinder to rotate the rotary cylin what each line of the working fluid managed another line of the working fluid, and a third cylindrical cavity of the lifting cylinder is connected to the connecting line between the first cylindrical cavity of the rotary cylinder and the first non-return valve, with the lifting cylinder is controlled by a pressure relief valve connected between its first and second cylindrical cavities and the first and second lines of the working fluid leading to it, and these valves keep lifting cylinder in a stationary position, while it is not filed with the working fluid, while the second cylindrical cavity of the rotary cylinder are connected through a Shuttle valve pressure with the first line of the working fluid leading into the first cylindrical cavity lifting cylinder with the inlet side of the bypass valve, the line pressure control Shuttle valve pressure respectively connected with the second line of the working fluid, leading to the second cylindrical cavity lifting cylinder with the inlet side of the bypass valve.

3. Installation under item 1 or 2, characterized in that the controlled pressure relief valves are connected with the lines of the working fluid, leading Pavlina line, leading into the third cylindrical cavity of the lifting cylinder is connected with a line leading into the first cylindrical cavity of the rotary cylinder between the check valve and the bypass valve, and a Shuttle valve connected with lines working fluid lifting cylinder respectively connected with the line fluid, leading to the second cylindrical cavity of the rotary cylinder between the check valve and the bypass valve.

4. Installation according to any one of the preceding paragraphs, characterized in that the lifting cylinder is connected below the arrows between the boom and the frame, and accordingly, the rotary cylinder is connected above the arrows between the boom and the feeding beam.

 

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SUBSTANCE: method includes use of device providing for manufacturability of assemblage of casing and drilling columns and concurrent drilling by two columns, provided with independent drives, and drilling, by casing column, of non-stable rock solids performed with frequency no greater than one calculated from formula

where Vmec - mechanical drilling speed, m/min, Fr - friction forces against rotation, Ften - friction forces against linear displacement, R - casing column radius, m, α - angle between vectors of directions of linear and rotating movements.

EFFECT: higher effectiveness, higher productiveness, higher reliability.

2 cl, 5 dwg, 1 ex

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