Offshore drilling sampling equipment based on offshore platform

Abstract

The utility model discloses ocean drilling sampling equipment based on an offshore platform, and relates to the field of ocean drilling sampling related products, the ocean drilling sampling equipment comprises a placing plate, the lower part of the placing plate is provided with a drill bit centering locking assembly, the drill bit centering locking assembly comprises a C-shaped fixing plate, and the middle part of the lower end of the C-shaped fixing plate is fixedly connected with a fixing sleeve; a drill bit assembly is slidably connected to the surface of the fixing sleeve, two symmetrically-formed open grooves are formed in the inner side of the upper end of the C-shaped fixing plate, a second guide column is fixedly connected to the inner wall of each open groove, a guide plate is slidably connected to the outer end of each second guide column, and a compression spring is fixedly connected to the outer end of each guide plate and sleeves the corresponding second guide column. The ends, away from the guide plates, of the compression springs are fixedly connected with the inner walls of the opening grooves, and the ends, close to each other, of the two guide plates are fixedly connected with inserting cylinders. According to the utility model, the drill bit body can be centered, clamped and positioned, the phenomenon of eccentric clamping of the drill bit body is prevented, and the abrasion between the drill bit body and the fixing sleeve is reduced.

Description

Technical Field

[0001] This utility model relates to the field of marine drilling and sampling related products, specifically a marine drilling and sampling device based on an offshore platform. Background Technology

[0002] Offshore drilling sampling refers to drilling engineering carried out by drilling vessels in oceans, bays and other sea areas to collect samples of geological bodies or other natural products according to certain requirements. It is mainly used in seabed crust research, energy exploration and other fields.

[0003] For example, utility model patent CN219887999U discloses a marine drilling and sampling device based on an offshore platform, including a mounting frame. A motor is fixedly connected to the top of the mounting frame, and a support plate is fixedly connected to the output end of the motor. The support plate has slots into which a drill bit is inserted. Bearing blocks are fixedly connected to both outer walls of the support plate. Threaded rods are rotatably connected to the bearing blocks, and a rotating block is fixedly connected to the top of the threaded rods. A movable plate is threaded onto the threaded rods, and one end of the movable plate passes through the support plate and is fixedly connected to a traction plate. A pressure plate is fixedly connected to the bottom end of the traction plate. The pressure plate has a wedge plate on one side, and a positioning plate is fixedly connected to one side of the wedge plate. The utility model adopts a snap-fit ​​fixing component, which can facilitate the assembly and disassembly of the drill bit. The on-site operation is simple and the disassembly is more convenient during later maintenance. However, there is a problem that the number of rotations of the threaded rods on both sides is inconsistent when the rotating blocks on both sides drive the threaded rods to rotate, thereby limiting the drill bit on both sides. This will cause the limited drill bit to be out of center, resulting in the drill bit rotating eccentrically during use, which will cause wear between the drill bit and the positioning plate. To address this, we propose a marine drilling and sampling device based on an offshore platform. Utility Model Content

[0004] The purpose of this invention is to provide a marine drilling and sampling device based on an offshore platform to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marine drilling and sampling device based on an offshore platform, comprising a placement plate, a drill bit centering and locking assembly disposed at the lower part of the placement plate, the drill bit centering and locking assembly comprising a C-shaped fixing plate, a fixing sleeve fixedly connected to the lower center of the C-shaped fixing plate, a drill bit assembly slidably connected to the surface of the fixing sleeve, two symmetrically arranged opening slots opened on the inner side of the upper part of the C-shaped fixing plate, a second guide post fixedly connected to the inner wall of each opening slot, and a guide post slidably connected to the outer end of the second guide post. The guide plate has a compression spring fixedly connected to its outer end, and the compression spring is sleeved on a second guide post. The end of the compression spring away from the guide plate is fixedly connected to the inner wall of the opening groove. The two guide plates are fixedly connected to each other at their close ends, and the two guide plates are fixedly connected to each other at their far ends. The outer wall of the second wedge block is slidably connected to a first wedge block. The outer end of the first wedge block is fixedly connected to a lowering block. The surface of the lowering block is threaded with a rotating rod that passes through the lowering block. The outer end of the rotating rod has a threaded groove.

[0006] Preferably, the lower end of the rotating rod is rotatably connected to a C-shaped fixing plate via a bearing, the upper end of the rotating rod is fixedly connected to a second bevel gear, each second bevel gear is meshed with a first bevel gear on its outer side, the surfaces of the two first bevel gears are fixedly connected to a first rotating shaft and the first rotating shaft passes through the first bevel gear, the right end of the first rotating shaft passes through the C-shaped fixing plate and is fixedly connected to the output end of the first stepper motor, and the outer end of the first stepper motor is fixedly connected to the C-shaped fixing plate.

[0007] Preferably, a second rotating shaft is fixedly connected to the middle of the upper end of the C-shaped fixing plate, the upper end of the second rotating shaft is fixedly connected to the output end of a second stepper motor, and the end of the second stepper motor away from the second rotating shaft is fixedly connected to the placement plate.

[0008] Preferably, the drill bit assembly includes a drill bit body, and an insertion ring groove is formed on the outer side of the upper end of the drill bit body, with the outer wall of the insertion cylinder abutting against the insertion ring groove.

[0009] Preferably, the outer end of the placement plate is fixedly connected to a plurality of uniformly distributed mounting plates, and each mounting plate has a mounting hole in the middle of its upper end.

[0010] Preferably, a first guide post is fixedly connected to the middle of the lower end of the moving block, and a C-shaped fixing plate is slidably connected to the outer end of the first guide post, with the first guide post penetrating through the C-shaped fixing plate.

[0011] Preferably, the guide plate has a sliding connection slot on its outer wall.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Equipped with a placement plate, mounting plate, mounting holes, a drill bit centering and locking assembly, a drill bit assembly, a second stepper motor, and a second rotating shaft, this device enables centering and clamping of the drill bit body. The drill bit body can be inserted into the fixing sleeve, creating a gap between them. An external power source can then power the first stepper motor. The output of the first stepper motor drives the first rotating shaft, which in turn drives the first bevel gear. Each first bevel gear drives its meshing second bevel gear, which in turn drives the rotating rod. The rotating rod drives the lowering block to move downwards. At this time, the lowering block drives the first guide post and the C-shaped fixing plate to slide relative to each other. Each lowering block drives the first wedge block to move downwards. The first wedge block drives the second wedge block to move closer to each other. The second wedge block drives the guide plate and the insertion cylinder to move towards the drill bit body. When the insertion cylinder is inserted into the insertion ring groove, the power supply to the first stepper motor is stopped. This utility model realizes the centered clamping and positioning action of the drill bit body, prevents the drill bit body from being clamped eccentrically, and reduces the wear between the drill bit body and the fixing sleeve.

[0014] 2. Equipped with a placement plate, mounting plate, mounting holes, a second stepper motor, and a second rotating shaft, the placement plate can be fixed to external equipment via the mounting plate and mounting holes. When the drill bit body needs to be rotated, the second stepper motor can be powered by an external power source. The output of the second stepper motor drives the second rotating shaft to rotate, which in turn drives the C-shaped fixing plate to rotate. The C-shaped fixing plate then indirectly drives the drill bit assembly to rotate, thereby performing the drilling action. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the drill bit centering locking assembly of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of the structure of part A in the middle.

[0019] In the diagram: 1. Placement plate; 2. Mounting plate; 3. Mounting hole; 4. Drill bit centering locking assembly; 41. C-shaped fixing plate; 42. First stepper motor; 43. First rotating shaft; 44. First bevel gear; 45. Second bevel gear; 46. Rotating rod; 47. Lowering block; 48. First guide post; 49. Opening slot; 410. First wedge block; 411. Second wedge block; 412. Guide plate; 413. Second guide post; 414. Compression spring; 415. Insertion cylinder; 416. Fixing sleeve; 5. Drill bit assembly; 51. Drill bit body; 52. Insertion ring groove; 6. Second stepper motor; 7. Second rotating shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a marine drilling and sampling device based on an offshore platform, including a placement plate 1. A drill bit centering and locking assembly 4 is provided at the lower part of the placement plate 1. The drill bit centering and locking assembly 4 includes a C-shaped fixing plate 41. A fixing sleeve 416 is fixedly connected to the lower center of the C-shaped fixing plate 41. A drill bit assembly 5 is slidably connected to the surface of the fixing sleeve 416. Two symmetrically arranged openings 49 are opened on the inner side of the upper end of the C-shaped fixing plate 41. A second guide post 413 is fixedly connected to the inner wall of each opening 49. A guide plate 412 is slidably connected to the outer end of the second guide post 413. The outer end of the guide plate 412 is fixedly connected to... A compression spring 414 is attached and a second guide post 413 is sleeved on the compression spring 414. The end of the compression spring 414 away from the guide plate 412 is fixedly connected to the inner wall of the opening slot 49. Two guide plates 412 are close to each other and are fixedly connected to insert cylinders 415 at one end. Two guide plates 412 are far apart and are fixedly connected to a second wedge block 411 at one end. A first wedge block 410 is slidably connected to the outer wall of the second wedge block 411. A lowering block 47 is fixedly connected to the outer end of the first wedge block 410. A rotating rod 46 is threadedly connected to the surface of the lowering block 47 and passes through the lowering block 47. A threaded groove is opened at the outer end of the rotating rod 46.

[0022] In this embodiment, the lower end of the rotating rod 46 is rotatably connected to the C-shaped fixing plate 41 via a bearing, and the upper end of the rotating rod 46 is fixedly connected to a second bevel gear 45. Each second bevel gear 45 is meshed with a first bevel gear 44 on its outer side. The surfaces of the two first bevel gears 44 are fixedly connected to a first rotating shaft 43, and the first rotating shaft 43 passes through the first bevel gear 44. The right end of the first rotating shaft 43 passes through the C-shaped fixing plate 41 and is fixedly connected to the output end of the first stepper motor 42. The outer end of the first stepper motor 42 is fixedly connected to the C-shaped fixing plate 41.

[0023] Specifically, the first stepper motor 42 is powered by an external power source. The output of the first stepper motor 42 drives the first rotating shaft 43 to rotate, which in turn drives the first bevel gear 44 to rotate. The first bevel gear 44 then drives the second bevel gear 45 to rotate.

[0024] In this embodiment, a second rotating shaft 7 is fixedly connected to the middle of the upper end of the C-shaped fixing plate 41, the upper end of the second rotating shaft 7 is fixedly connected to the output end of the second stepper motor 6, and the end of the second stepper motor 6 away from the second rotating shaft 7 is fixedly connected to the placement plate 1.

[0025] Specifically, the second stepper motor 6 and the second rotating shaft 7 can be used to fix the placement plate 1 to the external equipment through the mounting plate 2 and the mounting hole 3. When it is necessary to rotate the drill bit body 51, the second stepper motor 6 can be powered by an external power source. At this time, the output end of the second stepper motor 6 drives the second rotating shaft 7 to rotate, which in turn drives the C-shaped fixing plate 41 to rotate. The C-shaped fixing plate 41 indirectly drives the drill bit assembly 5 to rotate, thereby performing the drilling action.

[0026] In this embodiment, the drill bit assembly 5 includes a drill bit body 51, and an insertion ring groove 52 is provided on the outer side of the upper end of the drill bit body 51. The outer wall of the insertion cylinder 415 abuts against the insertion ring groove 52.

[0027] Specifically, ensure that the insertion cylinder 415 can smoothly clamp the drill bit body 51.

[0028] In this embodiment, a plurality of uniformly distributed mounting plates 2 are fixedly connected to the outer end of the placement plate 1, and each mounting plate 2 has a mounting hole 3 in the middle of its upper end.

[0029] Specifically, the device can be fixedly installed with external equipment through the mounting plate 2 and mounting holes 3.

[0030] In this embodiment, a first guide post 48 is fixedly connected to the middle of the lower end of the lower moving block 47, and the outer end of the first guide post 48 is slidably connected to a C-shaped fixing plate 41 and the first guide post 48 passes through the C-shaped fixing plate 41.

[0031] Specifically, ensure that the moving block 47 does not shift during the movement process.

[0032] In this embodiment, the outer wall of the guide plate 412 is slidably connected to the opening groove 49.

[0033] Specifically, this ensures that the guide plate 412 can slide smoothly within the opening slot 49.

[0034] Working principle: When the drill bit body 51 needs to be clamped in a centered position, the drill bit body 51 can be inserted into the fixing sleeve 416. At this time, there is a gap between the drill bit body 51 and the fixing sleeve 416. Then, the first stepper motor 42 can be powered by an external power source. The output end of the first stepper motor 42 drives the first rotating shaft 43 to rotate, which in turn drives the first bevel gear 44 to rotate. Each first bevel gear 44 drives its meshing second bevel gear 45 to rotate. The second bevel gear 45 drives the rotating rod 46 to rotate. The rotating rod 46 drives the lowering block 47 to move downward. The lowering block 47 drives the first guide post 48 to slide relative to the C-shaped fixing plate 41. At this time, each lowering block 47 drives the first wedge block 410 to move downward. 410 drives the second wedge block 411 to move closer together. At this time, the second wedge block 411 drives the guide plate 412 and the insertion cylinder 415 to move towards the drill bit body 51. When the insertion cylinder 415 is inserted into the insertion ring groove 52, the power supply to the first stepper motor 42 can be stopped. When the drill bit body 51 needs to be rotated, the second stepper motor 6 can be powered by an external power source. At this time, the output end of the second stepper motor 6 drives the second rotating shaft 7 to rotate, which in turn drives the C-shaped fixing plate 41 to rotate. At this time, the C-shaped fixing plate 41 indirectly drives the drill bit assembly 5 to rotate, thereby performing the drilling action. This utility model realizes the centered clamping and positioning action of the drill bit body 51, preventing the drill bit body 51 from being clamped eccentrically, and reducing the wear between the drill bit body 51 and the fixing sleeve 416.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine borehole sampling device based on a marine platform, comprising a placement plate (1), characterized in that: The lower part of the placement plate (1) is provided with a drill central locking assembly (4), the drill central locking assembly (4) comprises a C-shaped fixed plate (41), the lower end of the C-shaped fixed plate (41) is fixedly connected with a fixed sleeve (416), the surface of the fixed sleeve (416) is slidably connected with a drill assembly (5), the inner side of the upper end of the C-shaped fixed plate (41) is provided with two symmetrical opening grooves (49), the inner wall of each opening groove (49) is fixedly connected with a second guide column (413), the outer end of the second guide column (413) is slidably connected with a guide plate (412), the outer end of the guide plate (412) is fixedly connected with a compression spring (414), and the compression spring (414) is sleeved on the second guide column (413), the end, away from the guide plate (412), of the compression spring (414) is fixedly connected with the inner wall of the opening groove (49), the ends, close to each other, of the two guide plates (412) are fixedly connected with a plug-in cylinder (415), the ends, away from each other, of the two guide plates (412) are fixedly connected with a second wedge block (411), the outer wall of the second wedge block (411) is slidably connected with a first wedge block (410), the outer end of the first wedge block (410) is fixedly connected with a downward moving block (47), the surface of the downward moving block (47) is threadedly connected with a rotating rod (46), and the rotating rod (46) penetrates through the downward moving block (47), and the lower end of the rotating rod (46) is rotatably connected with the C-shaped fixed plate (41) through a bearing.

2. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The upper end of the rotating rod (46) is fixedly connected with a second bevel gear (45), the outer side of each second bevel gear (45) is meshingly connected with a first bevel gear (44), the surfaces of the two first bevel gears (44) are fixedly connected with a first rotating shaft (43), and the first rotating shaft (43) penetrates through the first bevel gear (44), the right end of the first rotating shaft (43) penetrates through the C-shaped fixed plate (41) and is fixedly connected with the output end of a first stepping motor (42), and the outer end of the first stepping motor (42) is fixedly connected with the C-shaped fixed plate (41).

3. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The upper end of the C-shaped fixed plate (41) is fixedly connected with a second rotating shaft (7), the upper end of the second rotating shaft (7) is fixedly connected with the output end of a second stepping motor (6), and the end, away from the second rotating shaft (7), of the second stepping motor (6) is fixedly connected with the placement plate (1).

4. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The drill assembly (5) comprises a drill body (51), the outer side of the upper end of the drill body (51) is provided with a plug-in ring groove (52), and the outer wall of the plug-in cylinder (415) abuts against the plug-in ring groove (52).

5. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The outer end of the placement plate (1) is fixedly connected with a plurality of mounting plates (2) which are uniformly distributed, the upper end of each mounting plate (2) is provided with a mounting hole (3).

6. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The lower end of the downward moving block (47) is fixedly connected with a first guide column (48), and the outer end of the first guide column (48) is slidably connected with the C-shaped fixed plate (41) and penetrates through the C-shaped fixed plate (41).

7. A marine borehole sampling apparatus based on an offshore platform according to claim 1, characterized in that: The outer wall of the guide plate (412) is slidably connected with the opening groove (49).

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