A large diameter, heavy load drilling tool connection plate and drilling tool system for a large vertical shaft drilling rig

Abstract

The present invention provides a large-diameter, heavy-load drill tool connection plate for a large vertical shaft drilling rig, including an upper connection plate, a lower connection plate, a limiting pad and a fixing bolt; a claw seat and a radial slot are provided on the upper connection plate, and a claw and a radial block are provided on the lower connection plate; the upper connection plate and the lower connection plate are axially connected by the cooperation of the claw seat and the claw, and are circumferentially connected by the cooperation of the radial slot and the radial block; at the same time, a limiting pad is provided between the claw seat and the claw, and the limiting pad and the claw seat are fixed by fixing bolts. The present invention also provides a drilling tool system, including the above-mentioned drilling tool connection plate. The present invention not only meets the complex force requirements, but also can achieve the purpose of rapid disassembly and assembly and reduce labor intensity, further improve the level of mechanized operation, so that the construction efficiency can be improved, the construction period can be compressed, the construction cost can be reduced, and the construction benefit can be improved.

Description

Technical Field

[0001] The invention relates to the field of large vertical shaft drilling construction, and in particular to a large-diameter, heavy-load drill tool connecting plate and a drill tool system for a large vertical shaft drilling rig. Background Art

[0002] With the development of science and technology in my country, the mechanical processing capacity has been greatly improved, and the capacity of coal mine shaft drilling equipment has also been gradually increased. At present, the lifting force and torque of drilling rigs have doubled, with the maximum lifting force of drilling rigs reaching 1300T and the torque reaching 1200KN.M.

[0003] The drilling tool system is the core component of the drilling rig. It is installed between the drill pipe and the drill bit to connect the drill pipe and the drill bit. During construction, the forces on the drilling tool connection plate of the drilling tool system are extremely complex. It must not only withstand the pulling force of the lower drilling tool and the weight of the drill bit, but also transmit the torque transmitted from the drilling rig to the drill pipe to drive the drill bit to rotate. At the same time, it must also overcome the bending moment caused by the drill bit during operation. Therefore, its reliable connection method can prevent unnecessary accidents. At the same time, due to the large structure and heavy weight of the drilling tool system, how to achieve convenient connection of the connection plate has always been an important breakthrough point for drilling rig developers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a large-diameter, heavy-load drill tool connecting plate and a drilling tool system for a large vertical shaft drilling rig. The application of the connecting plate and the system in drilling construction can greatly reduce the labor intensity during connection, shorten the connection time, and be safe and reliable.

[0005] The present invention adopts the following technical solutions to solve the above technical problems:

[0006] A large-diameter, heavy-load drilling tool connecting plate for a large vertical shaft drilling rig comprises an upper connecting plate, a lower connecting plate, a limiting pad and fixing bolts; the upper connecting plate is provided with a claw seat and a radial groove, and the lower connecting plate is provided with a claw and a radial block; the upper connecting plate and the lower connecting plate are axially connected through the cooperation of the claw seat and the claw, and are circumferentially connected through the cooperation of the radial groove and the radial block; at the same time, the limiting pad is also padded between the claw seat and the claw, and the limiting pad is fixed to the claw seat by the fixing bolts.

[0007] As one of the preferred embodiments of the present invention, the claw seat is an "F"-type claw seat, and the "F"-type claw seat is extended from the position of the connected upper plate to the direction close to the connected lower plate; the claw is a "plum blossom"-shaped claw, and the "plum blossom"-shaped claw is extended from the position of the connected lower plate to the direction close to the connected upper plate, and is engaged with the "F"-type claw seat.

[0008] As one of the preferred embodiments of the present invention, eight "F"-shaped claw seats and eight "plum blossom"-shaped claws are respectively provided; the eight "F"-shaped claw seats are evenly arranged along the outer edge of the connecting upper plate, and the eight "plum blossom"-shaped claws are evenly arranged along the outer edge of the connecting lower plate.

[0009] As one of the preferred embodiments of the present invention, an outer edge annular band is respectively provided on the docking surfaces of the upper plate and the lower plate; the radial groove is formed on the outer edge annular band connecting the upper plate, and the radial block is formed on the outer edge annular band connecting the lower plate; the radial block is snap-fitted with the radial groove.

[0010] As one of the preferred embodiments of the present invention, a plurality of radial slots are provided, and the plurality of radial slots are distributed in a circular array on the outer edge annular band connected to the upper plate; the number of radial blocks is the same as the radial slots, and the plurality of radial blocks are distributed in a circular array on the outer edge annular band connected to the lower plate; and each of the radial blocks is respectively engaged with a radial slot.

[0011] As one of the preferred embodiments of the present invention, the limiting pad is arc-shaped and is specifically arranged between the inner top wall of the claw seat and the contact surface of the claw.

[0012] As one of the preferred embodiments of the present invention, the central portion of the connection between the upper plate and the lower plate is also provided with an annular "convex and concave" stopper to play a role in radial positioning of the upper and lower plates.

[0013] As one of the preferred embodiments of the present invention, the annular "convex-concave" stopper includes a cylindrical "convex" platform located at the center of the upper plate and a cylindrical "concave" groove located at the center of the lower plate; the cylindrical "concave" groove is snap-fitted with the cylindrical "convex" platform, and a central mud channel running through the upper and lower parts is provided in the middle of the two.

[0014] As one of the preferred embodiments of the present invention, an annular groove is provided on the outer edge of the cylindrical "boss", and an "O" type rubber sealing ring is installed in the annular groove.

[0015] A large-diameter, heavy-load drilling tool system for a large vertical shaft drilling rig comprises the large-diameter, heavy-load drilling tool connecting plate of the large vertical shaft drilling rig.

[0016] The advantages of the present invention compared to the prior art are:

[0017] (1) Easy installation and disassembly; during installation, it is only necessary to rotate the lower plate relative to the upper plate by a certain angle so that the claws of the lower plate correspond to the claw seats of the upper plate; then, the lower plate is lowered so that the upper plate and the lower plate are tightly combined; then, a limit pad is inserted into the gap between them so that the two can fit together; finally, the limit pad is fixed to the claw seat of the upper plate with a fixing bolt, and the docking installation is completed; during disassembly, the process is reversed; the entire operation has low labor intensity and is convenient and quick;

[0018] (2) After the upper plate is connected to the lower plate, the bearing capacity is strong and it is a semi-flexible connection, which effectively releases the bending stress and plays a role in protecting the drilling tools;

[0019] (3) The claw-type fit has high tensile strength and strong bearing capacity; the radial slot and the block cooperate to transmit torque, which is safe and reliable;

[0020] (4) The design of the limit pad effectively prevents the card slot from detaching;

[0021] (5) "O" type rubber sealing ring seals to effectively block the mud from flowing through the connection gap;

[0022] (6) The claw seat and the limit pad are pre-tightened with bolts, which is safe and reliable.

[0023] Based on this, the connecting plate and the corresponding drilling tool system of the present invention can not only meet the complex force requirements, but also achieve the purpose of rapid disassembly and assembly and reduce labor intensity, further improve the level of mechanized operation, so that the construction efficiency can be improved, the construction period can be compressed, the construction cost can be reduced, and the construction benefits can be improved, which promotes the promotion and use of large vertical shaft drilling rigs and the further development of drilling construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall structural diagram of a large diameter, heavy load drilling tool connection plate of a large vertical shaft drilling rig in Example 1;

[0025] Figure 2 yes Figure 1 A top view of the structure;

[0026] Figure 3 is a structural diagram of connecting the upper plate in Example 1;

[0027] Figure 4 yes Figure 3 A top view of the structure;

[0028] Figure 5 is a structural diagram of the connection lower plate in Example 1;

[0029] Figure 6 yes Figure 5 The upward structural diagram of

[0030] Figure 7It is a structural diagram of the limiting pad in Example 1.

[0031] In the figure: 1 is a connection to the upper plate, 11 is an "F" type claw seat, 12 is a radial groove, 13 is an annular belt on the outer edge of the upper plate, 14 is a cylindrical "convex" platform, 15 is an annular groove, 16 is an "O" type rubber sealing ring, 2 is a connection to the lower plate, 21 is a "plum blossom" shaped claw, 22 is a radial block, 23 is an annular belt on the outer edge of the lower plate, 24 is a cylindrical "concave" groove, 3 is a limiting pad, 4 is a tightening bolt, 5 is a central mud channel, and 6 is a counterweight installation port. DETAILED DESCRIPTION

[0032] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0033] Example 1

[0034] like Figures 1 to 7 As shown, a large-diameter, heavy-load drilling tool connection plate of a large vertical shaft drilling rig of this embodiment includes a connection upper plate 1, a connection lower plate 2, a limit pad 3 and a fixing bolt 4. Among them, the connection upper plate 1 is provided with eight "F"-shaped claw seats 11 and a plurality of radial slots 12, and the connection lower plate 2 is provided with eight "plum blossom"-shaped claws 21 and a plurality of radial blocks 22; the connection upper plate 1 and the connection lower plate 2 are axially connected through the cooperation of the "F"-shaped claw seat 11 and the "plum blossom"-shaped claw 21, and are circumferentially connected through the cooperation of the radial slots 12 and the radial blocks 22. At the same time, a limit pad 3 is also provided between the "F"-shaped claw seat 11 and the "plum blossom"-shaped claw 21, and the limit pad 3 and the "F"-shaped claw seat 11 are fixed by the fixing bolt 4.

[0035] Based on the above design, in this embodiment, after the upper plate 1 is connected to the lower plate 2, the axial tensile strength of 13000KN is achieved through the "F"-shaped claw seat 11 and the "plum blossom"-shaped claw 21, and the annular limit torque transmission of 1200KN.M is achieved through the radial groove 12 and the radial block 22; at the same time, the upper plate 1 and the lower plate 2 are axially limited by the limiting pad 3, and the radial groove 22 and the radial block 22 are clamped, and then the tightening bolt 4 connects the limiting pad 3 to the "F"-shaped claw seat 11 of the upper plate 1 to control the displacement and sliding of the limiting pad 3.

[0036] For further information, see Figure 3 and Figure 4 In this embodiment, eight "F"-shaped claw seats 11 are evenly arranged along the outer edge of the upper plate 1, and each "F"-shaped claw seat 11 is extended from the position of the upper plate 1 to the direction close to the lower plate 2.

[0037] See also Figure 5 and Figure 6 Eight "plum blossom" shaped claws 21 are evenly arranged along the outer edge of the lower plate 2, and each "plum blossom" shaped claw 21 extends from the position of the lower plate 2 to the direction close to the upper plate 1 and is engaged with the "F" type claw seat 11 one by one.

[0038] For further information, see Figure 4 and Figure 6 In this embodiment, an outer edge annular band is respectively provided on the butt joint surface of the upper plate 1 and the lower plate 2, namely, an outer edge annular band 13 of the upper plate and an outer edge annular band 23 of the lower plate; a plurality of radial grooves 12 are uniformly formed on the outer edge annular band 13 of the upper plate along its circumference, and a radial block 22 is uniformly formed on the outer edge annular band 23 of the lower plate along its circumference; wherein, the number of radial blocks 22 is the same as that of radial grooves 13, and each radial block 22 is respectively engaged with a radial groove 13. The radial grooves 13 and radial blocks 22 are used to transmit torque after the upper plate 1 and the lower plate 2 are butt jointed.

[0039] For further information, see Figure 7 In this embodiment, the limiting pad 3 is arc-shaped and is specifically arranged between the inner top wall of the “F”-shaped claw seat 11 and the contact surface of the “plum blossom”-shaped claw 21 .

[0040] For further information, see Figure 1 , Figure 2 In this embodiment, an annular "convex-concave" stopper is also provided at the central part of the upper plate 1 and the lower plate 2, which plays a role in radial positioning of the upper and lower plates. Specifically, the annular "convex-concave" stopper includes a cylindrical "convex" platform 14 located at the central part of the upper plate 1 and a cylindrical "concave" groove 24 located at the central part of the lower plate 2; the cylindrical "concave" groove 24 is snap-fitted with the cylindrical "convex" platform 14, and a central mud channel 5 that runs through the upper and lower parts is provided in the middle of the two. Among them, an annular groove 15 is provided on the outer edge of the cylindrical "convex" platform 14, and an "O"-shaped rubber sealing ring 16 is installed in the annular groove 15, which plays a role in sealing the gap between the upper plate 1 and the lower plate 2 after docking.

[0041] In addition, it is important to note that:

[0042] (1) The inner clear height of the “F”-shaped jaw seat 11 is greater than the thickness of the “plum blossom”-shaped jaw 21 by 20 mm (not limited to 20 mm), and the width of the “plum blossom”-shaped jaw 21 is less than the clear distance between the upper and lower parts of the “F”-shaped jaw seat 11.

[0043] (2) The drilling tool connecting plate formed by connecting the upper plate 1 and the lower plate 2 is also provided with eight counterweight installation openings 6; the eight counterweight installation openings 6 are arranged around the central mud channel 5 and are respectively used to install corresponding counterweight blocks.

[0044] When installing the connecting upper plate 1 and the connecting lower plate 2, the connecting lower plate 2 is rotated by a certain angle relative to the connecting upper plate 1 so that the "plum blossom" shaped claw 21 corresponds to the "F" type claw seat 11; then, the connecting lower plate 2 falls so that the connecting upper plate 1 and the connecting lower plate 2 are tightly combined, and at the same time, it is ensured that the cylindrical "concave" groove 24 corresponds to the cylindrical "convex" platform 14, and the radial block 22 corresponds to the radial groove 12; then, the limiting pad 3 is inserted into the gap between the "F" type claw seat 11 and the "plum blossom" shaped claw 21 so that the two cooperate with each other; finally, the limiting pad 3 and the "F" type claw seat 11 are pre-tightened with the fixing bolt 4, and the installation is completed; the process is reversed during disassembly.

[0045] Example 2

[0046] A large-diameter, heavy-load drilling tool system for a large vertical shaft drilling rig in this embodiment includes the large-diameter, heavy-load drilling tool connecting plate for the large vertical shaft drilling rig in the above-mentioned embodiment 1.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large diameter, heavy load drilling tool connection plate for a large vertical shaft drilling rig, characterized in that: It includes a connecting upper plate, a connecting lower plate, a limiting pad and a fixing bolt; the connecting upper plate is provided with a claw seat and a radial slot, and the connecting lower plate is provided with a claw and a radial block; the connecting upper plate and the connecting lower plate are axially connected through the cooperation of the claw seat and the claw, and are circumferentially connected through the cooperation of the radial slot and the radial block; at the same time, the limiting pad is also padded between the claw seat and the claw, and the limiting pad is fixed to the claw seat by the fixing bolt; Wherein, the clamping claw seat is an "F"-shaped clamping claw seat, and the "F"-shaped clamping claw seat is formed by extending from the position of connecting the upper plate to the direction close to the connecting lower plate; the clamping claw is a "plum blossom"-shaped clamping claw, and the "plum blossom"-shaped clamping claw is formed by extending from the position of connecting the lower plate to the direction close to the connecting upper plate, and is engaged with the "F"-shaped clamping claw seat; The central part of the connecting upper plate and the connecting lower plate is also provided with an annular "convex and concave" stopper; The annular "convex-concave" stopper includes a cylindrical "convex" platform located at the center of the upper plate and a cylindrical "concave" groove located at the center of the lower plate; the cylindrical "concave" groove is engaged with the cylindrical "convex" platform, and a central mud channel is provided in the middle of the two. The outer edge of the cylindrical "convex" platform is provided with an annular groove, and an "O" type rubber sealing ring is installed in the annular groove; There are eight "F"-shaped claw seats and eight "plum blossom"-shaped claws respectively; the eight "F"-shaped claw seats are evenly arranged along the outer edge of the upper connecting plate, and the eight "plum blossom"-shaped claws are evenly arranged along the outer edge of the lower connecting plate; An outer edge annular band is respectively provided on the butt joint surface of the upper plate and the lower plate; the radial groove is formed on the outer edge annular band of the upper plate, and the radial block is formed on the outer edge annular band of the lower plate; the radial block is engaged with the radial groove.

2. The large diameter, heavy load drilling tool connection plate of a large vertical shaft drilling rig according to claim 1, characterized in that: There are multiple radial slots, which are distributed in a circular array on the outer edge annular band connected to the upper plate; the number of radial blocks is the same as the radial slots, which are distributed in a circular array on the outer edge annular band connected to the lower plate; and each radial block is respectively engaged with a radial slot.

3. The large diameter, heavy load drilling tool connection plate of a large vertical shaft drilling rig according to claim 1, characterized in that: The limiting pad is arc-shaped and is specifically arranged between the inner top wall of the clamping claw seat and the contact surface of the clamping claw.

4. A large diameter, heavy load drilling tool system for a large vertical shaft drilling rig, characterized in that: It comprises a large diameter, heavy load drilling tool connection plate for a large vertical shaft drilling rig as described in any one of claims 1 to 3.

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