Marine follower for rotary drilling rig and rotary drilling rig

Abstract

The utility model belongs to the technical field of rotary drilling rigs, and particularly relates to a marine follower for rotary drilling rigs and a rotary drilling rig, comprising a follower connector, a connecting plate and a follower square head, the main drill pipe square head of the rotary drilling rig is fixedly connected to the follower connector, the follower square head is fixedly connected to the drill tool connector of the rotary drilling rig, the connecting plate is staggered with a first horizontal rotating shaft and a second horizontal rotating shaft, the follower connector is hinged to the connecting plate through the first horizontal rotating shaft, and the follower square head is hinged to the connecting plate through the second horizontal rotating shaft. The present application hinges the follower connector and the follower square head to the connecting plate through the first horizontal rotating shaft and the second horizontal rotating shaft that are perpendicularly arranged to each other, thereby realizing the hinge connection between the main drill pipe square head of the rotary drilling rig and the drill tool connector, solving the problem of increasing the diameter of the rotary pile due to the shaking of the rotary drilling rig on the ship due to the impact of waves, reducing construction costs, and at the same time reducing the risk of fracture of the main drill pipe square head of the rotary drilling rig, thereby extending the service life of the rotary drilling rig.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling rigs, in particular to a marine follower for a rotary drilling rig and the rotary drilling rig. Background Art

[0002] In the traditional rotary drilling construction process, the square head of the main drill pipe of the rotary drilling rig is directly inserted into the drilling tool connection square of the rotary drilling rig and is fixedly connected by pins. The two are rigidly connected and cannot rotate. The main engine of the rotary drilling rig drives the torque and pressure to be transmitted through the square head of the main drill pipe, thereby driving the drilling tool of the rotary drilling rig to rotate and drill, thereby achieving the purpose of piling.

[0003] However, this working method is not suitable for sea surface construction without building an offshore platform. Since the rotary drilling rig is placed on a ship during the construction process, the ship is subjected to the surge and impact of the waves, which will cause the drilling tool of the rotary drilling rig to swing back and forth, left and right, thereby increasing the diameter of the rotary excavated pile and the amount of cement filling, increasing the construction cost, and the pile driving center may deviate from the predetermined center during the rotary excavation process, resulting in insufficient verticality of the pile hole, skewness, and unusable piles. At the same time, since the main drill rod square head and the drill tool connection side will repeatedly swing and be stressed due to the impact of the waves during the rotary excavation process, it is possible that the main drill rod square head of the rotary drilling rig will break, and the drilling tool will fall into the pile and become a waste pile. Therefore, it is urgent to design a marine follower and rotary drilling rig for rotary drilling rigs that can adapt to the swing of waves in all directions. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, the utility model provides a marine follower for a rotary drilling rig, including a follower connecting square, a connecting plate and a follower square head which are arranged in sequence from top to bottom, the main drill pipe square head of the rotary drilling rig is fixedly connected to the follower connecting square, and the follower square head is fixedly connected to the drill tool connecting square of the rotary drilling rig, wherein the connecting plate is staggeredly provided with a first horizontal rotating shaft and a second horizontal rotating shaft, the follower connecting square is hinged to the connecting plate through the first horizontal rotating shaft, and the follower square head is hinged to the connecting plate through the second horizontal rotating shaft.

[0005] Furthermore, the first horizontal rotating shaft and the second horizontal rotating shaft are perpendicular to each other, and the swing device connecting side swings left and right around the axis direction of the first horizontal rotating shaft, and the swing head swings back and forth around the axis direction of the second horizontal rotating shaft.

[0006] Furthermore, a first through hole penetrating front to back and a second through hole penetrating left to right are provided on the outer wall of the connecting disk, and the first through hole and the second through hole are staggered up and down; a first hinged portion is provided at the lower end of the follower connecting party, and a first through hole matching the first through hole is provided on the first hinged portion, and the follower connecting party is hinged to the connecting disk through a first horizontal rotating shaft passing through the first through hole and the first through hole; a second hinged portion is provided at the upper end of the follower square head, and a second through hole matching the second through hole is provided on the second hinged portion, and the follower square head is hinged to the connecting disk through a second horizontal rotating shaft passing through the second through hole and the second through hole.

[0007] Furthermore, a first connection part is provided on the upper part of the connecting square of the follower, and a receiving cavity is provided on the first connection part, and the square head of the main drill pipe of the rotary drilling rig is inserted into the receiving cavity and fixedly connected with the first connection part;

[0008] And / or a connecting square head is provided at the lower end of the swinging square head, and the connecting square head is inserted into the inner cavity of the drilling tool connecting square of the rotary drilling rig and fixedly connected with the drilling tool connecting square of the rotary drilling rig.

[0009] Furthermore, a first elastic buffer member abutting against the first hinged portion is provided on the upper surface of the connecting disk, and a second elastic buffer member abutting against the second hinged portion is provided on the lower surface of the connecting disk.

[0010] Furthermore, the number of the first elastic buffer members and the number of the second elastic buffer members are both two, the first elastic buffer members are symmetrically arranged on both sides of the first horizontal rotation axis, and the second elastic buffer members are symmetrically arranged on both sides of the second horizontal rotation axis.

[0011] Furthermore, the first elastic buffer component and the second elastic buffer component are both rubber components.

[0012] Furthermore, both ends of the first horizontal rotating shaft and the second horizontal rotating shaft are provided with limiting grooves, and the outer wall of the connecting plate is provided with a clamping piece adapted to the limiting groove, and the clamping piece rotatably connects the first horizontal rotating shaft and the second horizontal rotating shaft to the connecting plate.

[0013] Furthermore, the clamping parts are two symmetrical half-moon-shaped annular clamping parts, which are fixedly connected to the outer wall of the connecting plate after being clamped in the limiting groove.

[0014] A rotary drilling rig comprises any one of the above marine follower for the rotary drilling rig.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The present application hinges the follower connector and the follower square head to the connecting plate through the first horizontal rotating shaft and the second horizontal rotating shaft which are arranged perpendicular to each other, thereby realizing the hinge connection between the main drill pipe square head of the rotary drilling rig and the drill tool connector of the rotary drilling rig. When the rotary drilling rig placed on the ship is affected by the waves and swings, the follower connector can swing left and right around the axis direction of the first horizontal rotating shaft, and the follower square head can swing back and forth around the axis direction of the second horizontal rotating shaft, thereby effectively reducing the impact of waves in all directions on the rotary drilling rig, solving the problem of increased pile diameter due to the shaking of the rotary drilling rig, improving the quality of rotary drilling construction, reducing construction costs, and also reducing the risk of breakage of the main drill pipe square head of the rotary drilling rig, thereby extending the service life of the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall explosion structure of the existing rotary drilling rig;

[0019] Figure 2 This is a schematic diagram of the overall structure of the marine follower for the rotary drilling rig of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall explosion structure of the marine follower for rotary drilling rigs of the utility model (I);

[0021] Figure 4 This is a schematic diagram of the overall explosion structure of the marine follower for rotary drilling rigs of the utility model (II);

[0022] Figure 5 This is a schematic diagram of the main cross-sectional structure of the marine follower for a rotary drilling rig of the utility model;

[0023] Figure 6 It is a side view cross-sectional structural diagram of the marine follower for rotary drilling rig of the utility model;

[0024] Figure 7 This is a schematic diagram of the overall structure of a rotary drilling rig equipped with an ocean follower according to the utility model;

[0025] Among them: 1-follower connecting square, 11-first hinged part, 110-first through hole, 12-first connecting part, 120-accommodating chamber, 2-connecting plate, 21-first through hole, 22-second through hole, 23-first elastic buffer, 24-second elastic buffer, 3-follower square head, 31-second hinged part, 310-second through hole, 32-connecting square head, 4-main drill pipe square head, 5-drilling tool connecting square, 6-first horizontal rotating shaft, 7-second horizontal rotating shaft, 8-limiting groove, 9-clamping part, 91-semi-moon ring clamp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0027] Combine the following Figures 2 to 7 The utility model is described in detail in the following specific embodiments. Figure 2 The left-right direction of the paper is the left-right direction, and the direction perpendicular to the paper is the front-back direction.

[0028] The utility model provides a marine follower for a rotary drilling rig, comprising a follower connection square 1, a connection plate 2 and a follower square head 3 arranged in sequence from top to bottom, a mainframe drill pipe square head 4 of the rotary drilling rig is fixedly connected to the follower connection square 1, and the follower square head 3 is fixedly connected to a drilling tool connection square 5 of the rotary drilling rig. Among them: the connection plate 2 is staggeredly provided with a first horizontal rotating shaft 6 and a second horizontal rotating shaft 7 up and down, the follower connection square 1 is hinged to the connection plate 2 through the first horizontal rotating shaft 6, and the follower square head 3 is hinged to the connection plate 2 through the second horizontal rotating shaft 7.

[0029] The marine follower of the utility model is arranged between the main drill pipe square head 4 and the drill tool connector 5 of the rotary drilling rig, which changes the existing method of fixing the main drill pipe square head 4 and the drill tool connector 3 of the rotary drilling rig by locking with pins, and realizes the hinge connection between the main drill pipe square head 4 and the drill tool connector 3 of the rotary drilling rig. When the rotary drilling rig placed on the ship is affected by waves and swings, the follower connector 1 can swing around the axis direction of the first horizontal rotation axis 6, and the follower square head 3 can swing around the axis direction of the second horizontal rotation axis 7, thereby effectively reducing the impact of waves on the rotary drilling rig on the ship, solving the problem of increasing the pile diameter due to the shaking of the rotary drilling rig, improving the construction quality of rotary drilling, reducing construction costs, and also reducing the risk of breakage of the main drill pipe square head of the rotary drilling rig, thereby extending the service life of the rotary drilling rig.

[0030] For details, see Figure 2-Figure 6 In this embodiment, the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 are perpendicular to each other, the swing follower connecting square 1 swings left and right around the axis direction of the first horizontal rotating shaft 6, and the swing follower square head 3 swings forward and backward around the axis direction of the second horizontal rotating shaft 7. The utility model can better reduce the impact of waves in all directions of front, back, left and right by designing the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 perpendicular to each other, and the structural design is more reasonable.

[0031] For details, see Figure 2-Figure 6 In this embodiment, the outer wall of the connection disk 2 is provided with a first through hole 21 that passes through the front and back and a second through hole 22 that passes through the left and right. The first through hole 21 and the second through hole 22 are arranged in a staggered manner up and down; the lower end of the follower connection square 1 is provided with a first hinged portion 11, and the first hinged portion 11 is provided with a first through hole 110 that matches the first through hole 21. The follower connection square 1 is hinged to the connection disk 2 through the first horizontal rotation axis 6 passing through the first through hole 21 and the first through hole 110. The upper end of the follower square head 3 is provided with a second hinged portion 31, and the second hinged portion 31 is provided with a second through hole 310 that matches the second through hole 22. The follower square head 3 is hinged to the connection disk 2 through the second horizontal rotation axis 7 passing through the second through hole 22 and the second through hole 310. In this embodiment, the connecting disk 2 is a hollow cylindrical structure, and the lower end of the first hinged part 11 and the upper end of the second hinged part 31 are both cylindrical structures with a middle protrusion and recessed on both sides. The first through hole 110 and the second through hole 310 are arranged in the middle protrusion part, and the first hinged part 11 and the second hinged part 31 are hingedly arranged in the inner cavity of the connecting disk 2. The first hinged part 11 can swing left and right around the first horizontal rotation axis 6 under force, and the second hinged part 31 can swing back and forth around the second horizontal rotation axis 7 under force, which effectively alleviates the force influence of the main drill pipe square head 4 of the rotary drilling rig on the drill tool connection square 5 of the rotary drilling rig below.

[0032] For details, see Figure 3-Figure 6 In this embodiment, a first connection part 12 is provided on the upper part of the swing follower connection square 1, and a receiving cavity 120 is provided on the first connection part 12. The main drilling rod square head 4 of the rotary drilling rig is inserted into the receiving cavity 120 and fixedly connected with the first connection part 12. The receiving cavity 120 is a square cavity that matches the shape and size of the main drilling rod square head 4. Pin holes are provided around the first connection part 12. The main drilling rod square head 4 of the rotary drilling rig is fixed to the swing follower connection square 1 by inserting two mutually perpendicular pins into the pin holes. In order to ensure the stability of the structure, reinforcing ribs are also provided at the four corners of the first connection part 12.

[0033] For details, see Figure 3-Figure 6In this embodiment, the lower end of the swinging square head 3 is provided with a connecting square head 32, which is inserted into the inner cavity of the drilling tool connecting square 5 of the rotary drilling rig and fixedly connected with the drilling tool connecting square 5 of the rotary drilling rig. The drilling tool connecting square 5 of the rotary drilling rig is provided with pin holes around it, and the connecting square head 32 and the drilling tool connecting square 5 are fixed by inserting two mutually perpendicular pins into the pin holes.

[0034] For details, see Figure 3-Figure 6 In this embodiment, a first elastic buffer 23 abutting against the first hinge 11 is provided on the upper surface of the connection disk 2, and a second elastic buffer 24 abutting against the second hinge 31 is provided on the lower surface of the connection disk 2. In order to prevent the swing amplitude of the follower connection square 1 and the follower square head 3 from being too large, which affects the quality of rotary drilling, the utility model respectively provides a first elastic buffer 23 and a second elastic buffer 24 abutting against the first hinge 11 and the second hinge 31 on the upper and lower surfaces of the connection disk 2, and the recessed parts on both sides of the first hinge 11 and the second hinge 31 are provided with abutment positions, which abut against the first elastic buffer 23 and the second elastic buffer 24 respectively. Preferably, the first elastic buffer 23 and the second elastic buffer 24 are detachably connected to the connection disk 2 by fasteners, which is convenient for later maintenance and replacement.

[0035] For details, see Figure 3-Figure 6 In this embodiment, the number of the first elastic buffer 23 and the second elastic buffer 24 are both two, and the first elastic buffer 23 is symmetrically arranged on both sides of the first horizontal rotation axis 6, and the second elastic buffer 24 is symmetrically arranged on both sides of the second horizontal rotation axis 7. In order to ensure a better abutting effect, two abutting pieces are respectively provided on the abutting positions of the first hinge 11 and the second hinge 31, and the abutting pieces are welded and fixed to the first hinge 11 and the second hinge 31. When the follower connecting square 1 and the follower square head 3 do not swing, the top ends of the first elastic buffer 23 and the second elastic buffer 24 abut against the abutting pieces.

[0036] For details, see Figure 3-Figure 6 In this embodiment, the first elastic buffer 23 and the second elastic buffer 24 are both rubber parts. The upper part of the rubber part is a hemisphere, and the lower part is a cylinder. When the first hinge 11 or the second hinge 31 is subjected to force and swings, the abutment sheet and the rubber part abut against each other, causing the rubber part to deform under force. When the rubber part reaches the force limit, the first hinge 11 or the second hinge 31 stops swinging.

[0037] For details, see Figure 3-Figure 4In this embodiment, both ends of the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 are provided with limiting grooves 8, and the outer wall of the connecting disk 2 is provided with a clamping member 9 adapted to the limiting groove 8, and the limiting groove 8 is a U-shaped groove. The clamping member 9 rotatably connects the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 to the connecting disk 2. In this embodiment, the outer wall of the connecting disk 2 is provided with a clamping member fixing member at a position corresponding to the first through hole 21 and the second through hole 22, and the clamping member fixing member is welded and connected to the outer wall of the connecting disk 2. After the clamping member 9 is clamped on the U-shaped groove, it is connected to the clamping member fixing member through a fastener. The connection method of the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 and the connecting disk 2 is not limited here, as long as the rotation connection can be achieved.

[0038] For details, see Figure 3-Figure 4 In this embodiment, the clamping member 9 is two symmetrical half-moon annular clamping members 91, which are clamped in the limiting groove 8 and fixedly connected to the outer wall of the connecting disk 2. The two separate half-moon annular clamping members 91 can quickly rotate the first horizontal rotating shaft 6 and the second horizontal rotating shaft 7 to the connecting disk 2, and the structure is simple and practical.

[0039] The utility model also provides a rotary drilling rig, see Figure 7 , including any of the above-mentioned marine follower for rotary drilling rigs, the rotary drilling rig includes all technical solutions of the marine follower for rotary drilling rigs, and at least has all the advantages of the marine follower for rotary drilling rigs, which will not be repeated here. The rotary drilling rig is widely used in sea surface construction without building an offshore platform. The rotary drilling rig has a simple overall structure, is easy to install, and has a low production cost, and is worthy of promotion and use.

[0040] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A marine follower for a rotary drilling rig, characterized in that: It includes a swing follower connection side, a connection plate and a swing follower square head which are arranged in sequence from top to bottom. The main drill pipe square head of the rotary drilling rig is fixedly connected to the swing follower connection side, and the swing follower square head is fixedly connected to the drilling tool connection side of the rotary drilling rig, wherein: The connecting disk is staggered with a first horizontal rotating shaft and a second horizontal rotating shaft above and below, the follower connecting side is hinged to the connecting disk through the first horizontal rotating shaft, and the follower square head is hinged to the connecting disk through the second horizontal rotating shaft.

2. The marine follower for rotary drilling rig according to claim 1, characterized in that: The first horizontal rotating shaft and the second horizontal rotating shaft are perpendicular to each other, the follower connecting square swings left and right around the axis direction of the first horizontal rotating shaft, and the follower square head swings back and forth around the axis direction of the second horizontal rotating shaft.

3. The marine follower for rotary drilling rig according to claim 2, characterized in that: The outer wall of the connecting disk is provided with a first through hole that passes through front and back and a second through hole that passes through left and right, and the first through hole and the second through hole are staggered up and down; the lower end of the follower connector is provided with a first hinged portion, and the first hinged portion is provided with a first through hole that matches the first through hole, and the follower connector is hinged to the connecting disk through a first horizontal rotating shaft passing through the first through hole and the first through hole; the upper end of the follower square head is provided with a second hinged portion, and the second hinged portion is provided with a second through hole that matches the second through hole, and the follower square head is hinged to the connecting disk through a second horizontal rotating shaft passing through the second through hole and the second through hole.

4. The marine follower for rotary drilling rig according to claim 3, characterized in that: A first connection part is provided on the upper part of the swing follower connection square, and a receiving cavity is provided on the first connection part. The main drill pipe square head of the rotary drilling rig is inserted into the receiving cavity and fixedly connected to the first connection part; And / or a connecting square head is provided at the lower end of the swinging square head, and the connecting square head is inserted into the inner cavity of the drilling tool connecting square of the rotary drilling rig and fixedly connected with the drilling tool connecting square of the rotary drilling rig.

5. The marine follower for rotary drilling rig according to claim 3, characterized in that: A first elastic buffer member abutting against the first hinged portion is disposed on the upper surface of the connection disk, and a second elastic buffer member abutting against the second hinged portion is disposed on the lower surface of the connection disk.

6. The marine follower for rotary drilling rig according to claim 5, characterized in that: The number of the first elastic buffer members and the second elastic buffer members are both two. The first elastic buffer members are symmetrically arranged on both sides of the first horizontal rotation axis, and the second elastic buffer members are symmetrically arranged on both sides of the second horizontal rotation axis.

7. The marine follower for rotary drilling rig according to claim 5, characterized in that: The first elastic buffer component and the second elastic buffer component are both rubber components.

8. The marine follower for rotary drilling rig according to claim 3, characterized in that: Both ends of the first horizontal rotating shaft and the second horizontal rotating shaft are provided with limiting grooves, and the outer wall of the connecting disk is provided with a clamping piece adapted to the limiting groove, and the clamping piece rotatably connects the first horizontal rotating shaft and the second horizontal rotating shaft to the connecting disk.

9. The marine follower for rotary drilling rig according to claim 8, characterized in that: The clamping parts are two symmetrical half-moon annular clamping parts, which are fixedly connected to the outer wall of the connecting disk after being clamped in the limiting groove.

10. A rotary drilling rig, characterized in that: The invention comprises a marine follower for a rotary drilling rig as described in any one of claims 1 to 9.

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