CN216305859U - Drill pipe assisting device - Google Patents

Abstract

The utility model provides a drilling pipe assisting device which comprises a connecting sleeve, wherein a plurality of drainage guide grooves are formed in the connecting sleeve; a plugging sleeve is movably arranged on the connecting sleeve; a guide control mechanism is arranged in the connecting sleeve; the bottom of the connecting sleeve is provided with a bearing shaft, the bearing shaft is provided with a blocking mechanism, and the bearing shaft is also rotatably provided with a rotating pipe. The drilling pipe assisting device can inform technicians of starting drilling when the inner pipe is landed and locked in place, and timely remind operators to salvage the inner pipe when coring is completed.

Description

A drill pipe assisting device

technical field

The utility model belongs to the technical field of drilling and fishing equipment, and more particularly relates to a drilling pipe assisting equipment.

Background technique

During the drilling and survey operation, it is necessary to complete the storage, unlocking, transfer, unloading, drilling and coring of the drill pipe, as well as a series of actions such as the replacement of the core pipe and the cutting/salvage/storage of the sample core.

In the invention patent with the publication number CN108625807A, an engineering exploration rope coring drill suitable for seabed drilling rigs is disclosed. , clip chamber, outer tube, reamer and drill bit; inner tube assembly includes spearhead, clip positioning mechanism, clip bracket, single action mechanism, inner pipe joint, return ball valve, inner tube and core liner; The spearhead is connected with the elastic card positioning mechanism, and the elastic card positioning mechanism is connected with the elastic card bracket; a suspension ring is arranged on the side wall of the elastic card bracket, and the suspension ring is placed on the seat ring on the inner wall of the outer tube; the elastic card bracket is connected with the single-action mechanism Connection, the single-action mechanism is connected with the inner pipe joint, the lower end of the inner pipe joint is connected with the upper end of the inner pipe, and the core liner is arranged in the inner pipe; the single-action mechanism includes the mandrel, the casing end cover, the upper force ferrule and the lower Power card sleeve.

With the above drill pipe in the prior art, it is difficult for technicians to know when the inner pipe is locked in place during use; when the core removal is completed, the operator cannot be reminded to salvage the inner pipe in time, resulting in low exploration efficiency.

Utility model content

In order to overcome the above-mentioned defects in the prior art that it is difficult for time-consuming technicians to know when the inner pipe is locked in place; when the core removal is completed, the operator cannot be reminded to salvage the inner pipe in time, thereby leading to low exploration operation efficiency. A drill pipe assist device.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

In the first aspect, the present utility model provides a drilling pipe assisting device, comprising a connecting casing for connecting with a salvage device, a plurality of drainage guide grooves are arranged on the side wall of the connecting casing; A blocking kit that can block the drainage guide groove is sleeved; a guide control mechanism for controlling the movement of the blocking kit is installed in the connecting sleeve; a bearing shaft is installed on the bottom of the connecting sleeve, and the bearing shaft is installed There is a plugging mechanism capable of plugging the drill pipe, and the bearing shaft is rotatably sleeved at a position where the plugging mechanism is far away from the connecting casing, and a rotating pipe whose bottom end is connected with the core-taking pipe is provided.

In the utility model, the connecting casing is used for connecting with the salvage device, the rotating pipe is used for connecting with the coring pipe, the salvage device, the coring pipe and the auxiliary equipment of the drilling pipe in the utility model together form the inner pipe, and the bearing shaft is used for bearing the blockage mechanism and rotating pipe; the drainage guide groove is used to introduce the high-pressure water injected into the drill pipe from the outside into the gap between the inner pipe and the drill pipe, and the guide control mechanism is used to control the position state of the plugging kit. When the inner pipe is landed and locked, The plugging kit is in the state of blocking the drainage guide groove. When the inner pipe moves in the drill pipe, high-pressure water needs to be continuously injected into the drill pipe. When the inner pipe is landed in the drill pipe, the inner pipe cannot continue to move. The drainage guide groove is blocked, and the high-pressure water cannot be discharged. At this time, the pressure in the drill pipe rises, and a high-pressure signal indicates to the technician that the inner pipe has landed. Then release the pressure in the drill pipe, so that the guide control mechanism controls the plugging kit to separate from the state of blocking the drainage guide groove, so that the drainage guide groove can introduce high-pressure water between the drill pipe and the inner pipe at the right time. Start drilling. The plugging mechanism is used to block the drill pipe when the coring is completed, so as to increase the water pressure in the drill pipe, and prompt the technician to stop drilling and take out the inner pipe through a high-pressure signal.

Further, the blocking mechanism includes a top column, a number of rubber rings and a gasket, the top column is sleeved on the bearing shaft, and there is a gap between the top column and the bearing shaft; the gasket is sleeved on the bearing shaft, The rubber ring is movably sleeved on the bearing shaft, and the rubber ring is located at the position between the top column and the gasket.

Further, the bearing shaft is sleeved with a thrust bearing at the position between the top column and the rotating tube, one seat ring of the thrust bearing is fixed to the end of the top column away from the rubber ring, and the other seat ring is fixed. Connect to the end of the rotating tube near the rubber ring.

Further, the guiding control mechanism includes a movable block, a guiding elastic piece and several guide shafts, the movable block can be movably arranged in the connecting sleeve, one end of the guiding elastic piece is connected with the bottom of the movable block, and the other end is connected with the bearing shaft. The tops are connected to each other, the guide shaft is passed through the movable block, and both ends of the guide shaft pass through the drainage guide groove to be fixedly connected to the blocking kit; the drainage guide groove includes a starting position, a landing position and a drilling position. When the shaft is in the starting position or the landing position, the plugging kit seals the drainage guide groove, and when the guide shaft is in the drilling position, the sealing kit is separated from the drainage guide groove.

Further, the guide control mechanism further includes a guide shaft and an accommodating groove, the guide shaft is installed at the bottom of the movable block, the accommodating groove is arranged on the top of the bearing shaft, and the accommodating groove extends toward the rotating tube; The guide shaft is movably inserted into the accommodating groove, the guide elastic piece is sleeved on the guide shaft, and one end of the guide elastic piece abuts on the bottom of the accommodating groove, and the other end abuts on the bottom of the movable block.

Further, it also includes a first radial bearing and a second radial bearing, the first radial bearing and the second radial bearing are sleeved on the bearing shaft, and the first radial bearing and the second radial bearing are located in the bearing shaft. inside the rotating tube; the inner ring of the first radial bearing is fixedly connected with the bearing shaft, and there is a gap between the outer ring and the inner wall of the rotating tube; the second radial bearing is located at the end of the first radial bearing away from the blocking mechanism, so The outer ring of the second radial bearing is fixedly connected with the inner wall of the rotating tube, and there is a gap between the inner ring and the bearing shaft.

Further, a buffer elastic member and a stopper are sleeved on the bearing shaft at a position between the first radial bearing and the second radial bearing, the buffering elastic member is movably sleeved on the bearing shaft, and the stopper is sleeved on the bearing shaft. The block is located at the position of the buffer elastic member close to the second radial bearing, and the outer wall of the block is fixedly connected with the inner wall of the rotating tube, and there is a gap between the inner wall of the block and the bearing shaft; one end of the buffer elastic member is connected to the first The bottom of the radial bearing is in contact with the top of the stopper.

Further, a backing ring is fixed on the bearing shaft, the inner wall of the rotating tube is provided with a limiting block on the side of the backing ring close to the blocking mechanism, and the second radial bearing is sandwiched between the backing ring and the limiting block. between blocks.

Further, a plurality of pressure relief holes are provided on the side wall of the rotating pipe, and a filter mechanism for filtering the water body flowing into the rotating pipe is installed at the end of the pressure relief hole away from the blocking mechanism.

Further, the filtering mechanism includes a blocking block, a current-limiting blocking block, and a limit rod for blocking the movement of the current-limiting blocking block toward the pressure relief hole; the blocking rod is fixedly arranged in the rotating pipe, and the blocking rod The block is installed at the position where the limit rod is far away from the pressure relief hole in the rotating pipe, and the current limiting blocking block is movably arranged at the position between the blocking block and the limiting rod; Water inlet blocked by the block.

Compared with the prior art, the beneficial effects of the present utility model are:

1. When the inner pipe is in the landing lock state, the guide control mechanism controls the blocking kit to block the drainage guide groove, so that the water pressure in the drill pipe increases, and the information that the inner pipe has been landed and locked can be transmitted to the technician through the high-pressure signal; When the coring pipe completes the coring operation, the interior of the coring pipe is filled with soil. At this time, the coring pipe cannot continue to drill with the drill pipe, and the connecting casing still moves in the direction of the rotating pipe, so that the connecting casing and the The bearing shaft actuates the blocking mechanism together to block the gap between the inner pipe and the drill pipe, so that the pressure in the drill pipe rises, and the high-pressure signal transmits the information that the coring pipe has completed coring to the technician, reminding the technician to stop drilling, And salvage the inner pipe;

2. The first radial bearing and the second radial bearing can prevent radial shaking of the bearing shaft, and will not affect the movement of the rotating tube;

3. The pressure relief hole can discharge part of the water entering the rotating pipe to prevent the pressure in the drilling pipe from rising sharply after the coring pipe is filled with soil, and the filter mechanism can filter the water flowing into the rotating pipe to prevent soil from entering the rotating pipe. adverse effects.

Description of drawings

1 is a schematic structural diagram of a drilling pipe assisting device in an embodiment of the present invention;

Fig. 2 is a sectional view along line A-A in Fig. 1;

3 is a schematic structural diagram of a connecting sleeve in an embodiment of the present invention;

Fig. 4 is the state schematic diagram of the drilling pipe assisting equipment when the guide shaft is at the starting position in the embodiment of the present invention;

Fig. 5 is the state schematic diagram of the guide shaft in the starting position in the embodiment of the present utility model;

6 is a schematic diagram of the state of the drilling pipe assisting equipment when the guide shaft is in the landing position in the embodiment of the present invention;

Fig. 7 is the state schematic diagram of the guide shaft in the landing position in the embodiment of the present invention;

8 is a schematic diagram of the state of the drilling pipe assisting equipment when the guide shaft is in the ready position in the embodiment of the present invention;

Fig. 9 is the state schematic diagram of the guide shaft in the preparatory position in the embodiment of the present utility model;

10 is a schematic diagram of the state of the guide shaft in the drilling position in the embodiment of the present invention;

Fig. 11 is a schematic diagram of the state of the drilling pipe assisting equipment when the core removal is completed in the embodiment of the present invention.

1. Connecting casing; 101, Drain hole; 2, Drainage guide groove; 201, Start position; 202, Landing position; 203, Preparatory position; 204, Drilling position; 3, Blocking kit; 4. Guidance control mechanism; 401, movable block; 402, guide elastic member; 403, guide shaft; 404, fixed pin; 405, guide shaft; 406, accommodating groove; 5, bearing shaft; 6, blocking mechanism; 601, Top column; 602, rubber ring; 603, gasket; 604, spacer; 7, locking bushing; 8, rotating tube; 801, first sleeve; 802, second sleeve; 9, thrust bearing; 10 , the first radial bearing; 11, the second radial bearing; 12, the lock nut; 13, the gasket; 14, the limit block; 15, the buffer elastic part; 16, the stopper; 17, the pressure relief hole; 18 , Filter mechanism; 181, Block; 182, Current limiting block; 183, Limit rod; 184, Water inlet; 185, Filter sleeve.

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable to the artisan that certain well-known structures and descriptions thereof may be omitted from the drawings. The positional relationships described in the drawings are only for exemplary illustration, and should not be construed as a limitation on the present patent.

The same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", " The orientation or positional relationship indicated by "right", "long" and "short" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or element. It must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent. Understand the specific meanings of the above terms under specific circumstances.

Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present utility model is further described in detail:

Example

1 to 3, it is an embodiment of a drilling pipe assisting device of the present invention, comprising a connecting casing 1 for connecting with a fishing device, and a plurality of drainage guide grooves 2 are arranged on the side wall of the connecting casing 1; The connecting sleeve 1 is movably provided with a blocking kit 3 that can block the drainage guide groove 2; the connecting sleeve 1 is provided with a guiding control mechanism 4 for controlling the movement of the blocking kit 3; the bottom of the connecting sleeve 1 is installed with The bearing shaft 5 is provided with a blocking mechanism 6 that can block the drill pipe, and the bearing shaft 5 is rotated and sleeved at the position where the blocking mechanism 6 is far from the connection casing 1 and is provided with a rotating pipe whose bottom end is connected with the core pipe. 8.

Specifically, the connecting casing 1 is cylindrical, and four drain holes 101 are provided at the top of the outer wall of the connecting casing 1, so that when high-pressure water is injected into the drill pipe, part of the high-pressure water can flow into the drill pipe through the drain holes 101 In the gap between the inner pipe and the inner pipe, the space in the connecting casing 1 is prevented from being filled up by high-pressure water, which is not conducive to docking with the salvage device. In this embodiment, there are two drainage guide grooves 2 , which are oppositely arranged on the outer wall of the connecting sleeve 1 . The plugging kit 3 is cylindrical, coaxially slidably sleeved on the connecting sleeve 1 , the guiding control mechanism 4 is movably arranged in the connecting sleeve 1 , and the guiding control mechanism 4 is connected with the plugging sleeve 3 through the drainage guide groove 2 , as the pressure in the drill pipe changes, the guide control mechanism 4 can control the state that the blocking sleeve 3 is separated from the blocking and drainage guide groove 2 . In this embodiment, the bearing shaft 5 is a five-stage stepped shaft, and the shaft diameter of the bearing shaft 5 gradually decreases along the axial direction of the bearing shaft 5 . The top of the side wall of the first end of the bearing shaft 5 is provided with threads, and the first section of the bearing shaft 5 is inserted at the bottom position of the connection sleeve 1 through screw connection. The first section of the bearing shaft 5 is also sleeved with a locking shaft sleeve 7. The locking shaft sleeve 7 is connected with the first section of the bearing shaft 5 through a threaded fit. One side of the segment shoulder. The locking shaft sleeve 7 can improve the locking and positioning strength of the bearing shaft 5 . The blocking mechanism 6 is sleeved on the second section of the bearing shaft 5 , and the third, fourth and fifth sections of the bearing shaft 5 are all located in the rotating tube 8 .

In one embodiment, the blocking mechanism 6 includes a top post 601, a number of rubber rings 602 and a gasket 603. The top post 601 is movably sleeved on the bearing shaft 5, and one end of the top post 601 away from the drainage guide groove 2 and the rotating tube 8 are connected, the gasket 603 is fixedly sleeved on the bearing shaft 5 , the rubber ring 602 is movably sleeved on the bearing shaft 5 , and is located between the top column 601 and the gasket 603 .

Specifically, the gasket 603 is adhered to the shaft shoulder between the first section and the second section of the bearing shaft 5 , which can provide a limiting function for the rubber ring 602 . In this embodiment, the rubber rings 602 are preferably rubber rings, the number of the rubber rings 602 is two, and a spacer 604 is arranged between the two rubber rings 602. on the bearing shaft 5. The top column 601 is cylindrical, and is coaxially sleeved on the second section of the bearing shaft 5 . Three sections. When the coring pipe completes the coring, the coring pipe cannot continue to follow the drilling pipe, and at this time, the connecting casing 1 and the bearing shaft 5 connected to the connecting casing 1 will continue to move towards the direction of the coring pipe. Therefore, the connecting sleeve 1, the locking sleeve 7, the bearing shaft 5 and the gasket 603 squeeze the two rubber rings 602, and at this time the rotating tube 8 cannot move, and the two rubber rings 602 are limited and cannot move. , resulting in radial expansion and deformation, thereby sealing the gap between the drill pipe and the inner pipe.

In one embodiment, the bearing shaft 5 is sleeved with a thrust bearing 9 at the position between the top column 601 and the rotating tube 8, and a seat ring of the thrust bearing 9 is fixed to the end of the top column 601 away from the rubber ring 602, The other seat ring is fixed to one end of the rotating tube 8 close to the rubber ring 602 .

Specifically, the rotating tube 8 includes a first sleeve 801 and a second sleeve 802. The bottom of the inner wall of the first sleeve 801 is provided with internal threads, the top of the outer wall of the second sleeve 802 is provided with external threads, and the first sleeve 802 is provided with external threads. 801 and the second sleeve 802 are sleeved to form the rotating pipe 8 through the cooperation of the inner thread and the outer thread. The thrust bearing 9 is coaxially sleeved on the third section of the bearing shaft 5, one seat ring of the thrust bearing 9 is fixed on the bottom of the inner wall of the top column 601 through an interference fit, and the other seat ring of the thrust bearing 9 is through an interference fit. It is fixed on the top of the inner wall of the first sleeve 801 .

In this way, when the drill pipe is drilled, the rotating pipe 8 rotates axially with the drill bit, and the connecting casing 1 cannot rotate because it is connected with the salvage device. The thrust bearing 9 makes the rotating pipe 8 rotate without The blocking device and the connecting sleeve 1 are driven to rotate together, and the thrust bearing 9 enables the rotating tube 8 to push the ejector column 601 under the condition of rotation.

In one embodiment, the guide control mechanism 4 includes a movable block 401 , a guide elastic member 402 and several guide shafts 403 . The movable block 401 is movably arranged in the connecting sleeve 1 , and one end of the guide elastic member 402 is guided to the bottom of the movable block 401 . The other end is connected to the top of the bearing shaft 5, the guide shaft 403 is passed through the movable block 401, and both ends of the guide shaft 403 pass through the drainage guide groove 2 and are fixed to the blocking kit 3; the drainage guide groove 2 includes the starting position 201, the landing position 202 and the drilling position 204, when the guide shaft 403 is at the starting position 201 or the landing position 202, the blocking kit 3 blocks the drainage guide groove 2, when the guide shaft 403 is at the drilling position 204 In this case, the blocking kit 3 is separated from the drainage guide groove 2 .

Specifically, the drainage guide groove 2 includes a starting position 201, a landing position 202, a preparation position 203 and a drilling position 204. The starting position 201, the landing position 202 and the preparation position 203 form a "V" shape. The preparatory position 203 is at both ends of the "V" shape, the landing position 202 is between the initial position 201 and the preparatory position 203, and the height of the landing position 202 is lower than the initial position 201 and the preparatory position 203; the preparatory position 203 is directed to the rotating tube A vertical groove extends in the direction of 8 to form a drilling position 204 , and the height of the drilling position 204 is lower than the starting position 201 , the landing position 202 and the preparation position 203 . The landing positions 202 on the two drainage guide grooves 2 on the connecting casing 1 are set asymmetrically, while the starting position 201, the preparatory position 203, and the drilling position 204 are set symmetrically, so that the guide shaft 403 can be positioned at the starting position 201. During the process of sliding from the initial position 201 to the preparatory position 203, the phenomenon of reverse movement does not occur, and the principle is similar to "pressing the pen". In this embodiment, the number of the guide shaft 403 is one, the two ends of the guide shaft 403 are slidably arranged in the two drainage guide grooves 2 , and the two axial side walls of the guide shaft 403 are welded with the inner wall of the blocking sleeve 3 . The movable block 401 is cylindrical, the guide shaft 403 is inserted through the side wall of the movable block 401, and the axis of the guide shaft 403 is perpendicular to the axial direction of the movable block 401; Pin 404. The movable block 401 is located on the top of the bearing shaft 5, and the guiding elastic member 402 is located between the bearing shaft 5 and the movable block 401. In this embodiment, the guiding elastic member 402 is preferably a spring.

In this way, when high-pressure water is not injected into the drill pipe, the guide shaft 403 is located at the starting position 201 of the drainage guide groove 2, and the movable block 401 does not compress the guide elastic member 402. When the inner pipe is pushed by the high-pressure water to the state where it is landed and locked in place When the inner pipe cannot continue to move, the pressure in the drill pipe rises, and the movable block 401 drives the guide shaft 403 to move toward the bearing shaft 5 under the pressure of high-pressure water, so that the guide shaft 403 moves from the starting position in the drainage guide groove 2 from the starting position. 201 slides to the landing position 202, and at the same time, the guiding elastic member 402 is compressed; at this time, the technician releases the pressure in the drill pipe, so that the elastic potential energy of the guiding elastic member 402 is released, and the guiding elastic member 402 is actuated by its own elastic restoring force The movable block 401 moves away from the bearing shaft 5, and at the same time, driven by the movable block 401, the guide shaft 403 moves from the landing position 202 to the preparatory position 203 in the drainage guide groove 2; at this time, continue to inject high-pressure water into the drill pipe , the movable block 401 moves toward the bearing shaft 5 again under the action of water pressure, and drives the guide shaft 403 to move from the preparatory position 203 to the drilling position 204 in the drainage guide groove 2. Due to the low height of the drilling position 204, During the process of the guide shaft 403 moving to the drilling position 204, the guide shaft 403 drives the blocking kit 3 to slide to a position lower than the drainage guide groove 2, and leaves the state of blocking the drainage guide groove 2, so that the high-pressure water can pass through the drainage. The guide groove 2 enters the gap between the inner pipe and the drill pipe, and drilling can be started at this time.

In one embodiment, the guide control mechanism 4 further includes a guide shaft 405 and an accommodating groove 406 , the guide shaft 405 is installed on the bottom of the movable block 401 , the accommodating groove 406 is set on the top of the bearing shaft 5 , and the accommodating groove 406 rotates toward The tube 8 is extended; the guide shaft 405 is movably inserted into the accommodating groove 406, the guide elastic member 402 is sleeved on the guide shaft 405, and one end of the guide elastic member 402 abuts on the bottom of the accommodating groove 406, and the other end abuts on the bottom of the accommodating groove 406. Bottom of active block 401.

Specifically, the accommodating groove 406 is coaxially opened on the top wall of the bearing shaft 5 , the accommodating groove 406 moves in a direction away from the movable block 401 , the guiding elastic member 402 is located in the accommodating groove 406 , and one end of the guiding elastic member 402 is connected to the The bottom wall of the accommodating slot 406 is in contact with the bottom wall of the movable block 401 . The guide shaft 405 is coaxially embedded in the bottom wall of the movable block 401 , the guide shaft 405 is inserted into the accommodating groove 406 , and the guide elastic member 402 is sleeved on the guide shaft 405 . When the movable block 401 moves toward the bearing shaft 5 , the guide shaft 405 slides in the accommodating groove 406 synchronously, which can guide the movement of the movable block 401 and prevent the moving path of the movable block 401 from being skewed.

In one of the embodiments, a first radial bearing 10 and a second radial bearing 11 are further included, the first radial bearing 10 and the second radial bearing 11 are sleeved on the bearing shaft 5, and the first radial bearing 10. The second radial bearing 11 is located in the rotating tube 8; the inner ring of the first radial bearing 10 is fixedly connected to the bearing shaft 5, and there is a gap between the outer ring and the inner wall of the rotating tube 8; the second radial bearing 11 is located in the first radial bearing 11. One end of a radial bearing 10 away from the blocking mechanism 6 , the outer ring of the second radial bearing 11 is fixedly connected to the inner wall of the rotating tube 8 , and there is a gap between the inner ring and the bearing shaft 5 .

Specifically, the first radial bearing 10 and the second radial bearing 11 are both deep groove ball bearings. The first radial bearing 10 and the second radial bearing 11 are coaxially sleeved on the fourth section of the bearing shaft 5 , and the first radial bearing 10 is located on the side of the thrust bearing 9 away from the connecting sleeve 1 . The inner wall of the first radial bearing 10 is in interference fit with the outer wall of the bearing shaft 5, and there is a gap between the outer wall of the first radial bearing 10 and the inner wall of the first sleeve 801, so that the first radial bearing 10 can follow the bearing shaft 5 Axial movement. The outer wall of the second radial bearing 11 is in interference fit with the inner wall of the third sleeve 802, and there is a gap between the inner wall of the second radial bearing 11 and the bearing shaft 5, so that the second radial bearing 11 can not affect the bearing shaft 5 axial movement. The fifth section of the bearing shaft 5 is coaxially sleeved with a lock nut 12 through threading. The fifth section of the bearing shaft 5 is sleeved with a backing ring 13 between the locking nut 12 and the shoulder of the fifth section. The lock nut 12 is clamped and fixed with the shoulder of the fifth section of the bearing shaft 5 . The inner wall of the second sleeve 802 protrudes toward the axis to form an annular limit block 14 , and the second radial bearing 11 is clamped by the backing ring 13 and the limit block 14 , so that the second radial bearing 11 is not moving can remain in the current position without axial play.

In this way, the first radial bearing 10 and the second radial bearing 11 can limit the radial degree of freedom of the bearing shaft 5 without affecting the axial freedom of the bearing shaft 5 and prevent the bearing shaft 5 from being radially displaced. shaking.

In one embodiment, a buffer elastic member 15 and a stopper 16 are sleeved on the bearing shaft 5 at a position between the first radial bearing 10 and the second radial bearing 11 , and the buffer elastic member 15 is movably sleeved on the bearing On the shaft 5 , the stopper 16 is located at the position where the buffer elastic member 15 is close to the second radial bearing 11 , and the outer wall of the stopper 16 is fixedly connected with the inner wall of the rotating tube 8 , and there is a gap between the inner wall of the stopper 16 and the bearing shaft 5 . Clearance; one end of the buffer elastic member 15 is in contact with the bottom of the first radial bearing 10 , and the other end is in contact with the top of the stopper 16 .

Specifically, between the first radial bearing 10 and the second radial bearing 11, the fourth section of the bearing shaft 5 is coaxially sleeved with a buffer elastic member 15 and a stopper 16, and the buffer elastic member 15 is preferably a spring. The block 16 is in a "convex" shape, the top of the block 16 extends toward the direction of the first radial bearing 10 , the buffer elastic member 15 is sleeved on the block 16 , and one end of the buffer elastic member 15 is connected to the first radial bearing 10 . The bottom wall is in abutment, the other end is in contact with the stopper 16 , and the bottom wall of the stopper 16 is in contact with the axial top wall of the second sleeve 802 . The buffer elastic member 15 can prevent the first radial bearing 10 from moving axially before the coring pipe is completed; when the coring is completed, the first radial bearing 10 moves with the bearing shaft 5 toward the rotating pipe 8 while pressing The buffer elastic member 15, at this time, the buffer elastic member 15 provides a certain buffer to prevent the axially moving components such as the bearing shaft 5 and the connecting sleeve 1 from moving too fast.

In one embodiment, a number of pressure relief holes 17 are provided on the side wall of the rotating pipe 8 , and a filter mechanism 18 for filtering the water body flowing into the rotating pipe 8 is installed at the end of the rotating pipe 8 away from the pressure relief hole 17 from the blocking mechanism 6 . .

Specifically, the pressure relief holes 17 are opened on the second sleeve 802, the number of the pressure relief holes 17 is preferably two, and the two pressure relief holes 17 are symmetrically arranged on the outer wall of the second sleeve 802, and the pressure relief holes 17 It is located on the side of the lock nut 12 away from the first radial bearing 10 . The filter mechanism 18 is mounted on the bottom of the second sleeve 802 . The pressure relief hole 17 can discharge part of the water returned from the coring pipe into the second casing 802 when the core coring pipe is filled, so as to prevent the pressure in the drilling pipe from rising too fast, and the filter mechanism 18 can drain the water flowing into the second casing. The water in the pipe 802 is filtered to prevent dirt such as soil from contaminating other components in the auxiliary device in the present invention.

In one embodiment, the filter mechanism 18 includes a clamping block 181, a current limiting blocking block 182, and a limiting rod 183 for blocking the current limiting blocking block 182 from moving toward the pressure relief hole 17; the limiting rod 183 is fixedly arranged In the rotating tube 8 , the blocking block 181 is installed in the rotating pipe 8 at the position where the limit rod 183 is far from the pressure relief hole 17 , and the current limiting blocking block 182 is movably arranged at the position between the blocking block 181 and the limit rod 183 . ; The block 181 is provided with a water inlet 184 that can be blocked by the current limiting blocking block 182 .

Specifically, the filter mechanism 18 further includes a filter sleeve 185, the top of the outer wall of the filter sleeve 185 is provided with an accidental internal thread, the bottom of the outer wall of the second sleeve 802 is provided with an external thread, and the filter sleeve 185 and the second sleeve 802 pass through Threaded mate connection. The clamping block 181 is cylindrical, the top of the clamping block 181 is provided with a groove, the spherical current limiting blocking block 182 is movably arranged in the groove, and the bottom wall of the clamping block 181 is coaxially provided with a circular water inlet 184. The water inlet The aperture of 184 is smaller than the radius of the current limiting blocking block 182 . When the current limiting blocking block 182 is in contact with the bottom wall of the blocking block 181 , the current limiting blocking block 182 blocks the water inlet 184 . The limit rod 183 is cylindrical, and the axial direction of the limit rod 183 is perpendicular to the axial direction of the rotating tube 8 . The blocking block 182 acts as a limiter. The bottom of the inner wall of the filter sleeve 185 is provided with an inner thread for connecting with the coring tube.

In this way, when the coring tube is filled, the mixture of soil and water enters the filter sleeve 185 and passes through the water inlet 184 at the same time. At this time, the soil is blocked by the current limiting block 182, and the water flow can pass through the current limiting block. The gap between the blocking block 182 and the clamping block 181 flows into the second sleeve 802 , so as to achieve the effect of effectively filtering the water flowing back into the second sleeve 802 .

When in use, first refer to FIG. 4 and FIG. 5 , place the guide shaft 403 at the starting position 201 of the drainage guide groove 2 , then install the fishing device on the connecting sleeve 1 , and install the coring tube on the filter sleeve 185 , that is, the inner pipe; then with reference to Figure 6 and Figure 7, the inner pipe is put into the drill pipe, and high-pressure water is injected into the drill pipe through the fluid control valve, so that the inner pipe falls, when the inner pipe is landed to the bottom of the drill pipe. , and when the female joint device of the salvage device is locked with the groove on the inner wall of the drill pipe, the guide shaft 403 moves to the landing position 202 in the drainage guide groove 2. At this time, the water pressure in the drill pipe rises, and the fluid control valve emits a signal indicating that the inner pipe has landed. And the high-pressure signal that the female joint device of the salvage device is locked with the groove on the inner wall of the drilling pipe; referring to Fig. 8, Fig. 9 and Fig. 10, after receiving the high-pressure signal, the technician releases the pressure in the drilling pipe, at this time the guide shaft 403 is guiding the elasticity Under the action of the elastic restoring force of the component 402, it moves to the preparation position 203 of the drainage guide groove 2, and then injects high-pressure water into the drill pipe through the fluid control valve again. At this time, the guide shaft 403 moves to the drilling position 204 in the drainage guide groove 2. , at the same time, the plugging kit 3 is separated from the state of blocking the drainage guide groove 2, and the high pressure water enters between the drill pipe and the inner pipe through the drainage guide groove 2, and drilling can be started; after the drilling is completed, refer to Figure 11, at this time the core pipe After the coring is completed, the inside of the coring pipe is filled with soil, and the coring pipe cannot continue to move with the drill bit. The connecting casing 1, the bearing shaft 5, the locking shaft sleeve 7 and the gasket 603 move toward the rotating pipe 8, and the rubber ring 602 is removed. It is compressed and deformed, and the gap between the inner pipe and the drill pipe is blocked, the pressure in the drill pipe rises, and the fluid control valve sends out a high-pressure signal indicating the completion of the coring. At this time, the drilling can be stopped. take out.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (10)

1. A drilling pipe assisting device, characterized in that it comprises a connecting casing (1) for connecting with a salvage device, the side wall of the connecting casing (1) is provided with several drainage guide grooves (2); The connecting sleeve (1) is movably provided with a blocking kit (3) that can block the drainage guide groove (2); the connecting sleeve (1) is installed with a plugging kit (3) for controlling the movement of the blocking kit (3). A guide control mechanism (4); a bearing shaft (5) is installed on the bottom of the connecting sleeve (1), and a blocking mechanism (6) that can block the drilling pipe is installed on the bearing shaft (5), and the The bearing shaft (5) is rotatably sleeved at the position where the blocking mechanism (6) is away from the connecting sleeve (1), and a rotating pipe (8) whose bottom end is connected with the core-taking pipe is sleeved. 2. The drilling pipe assisting device according to claim 1, wherein the blocking mechanism (6) comprises a top post (601), several rubber rings (602) and a gasket (603); the top post (603) 601), a plurality of rubber rings (602) and gaskets (603) are movably sleeved on the bearing shaft (5) in sequence from bottom to top. 3. The drilling pipe assisting device according to claim 2, wherein the bearing shaft (5) is sleeved with a thrust bearing (9) at a position between the top column (601) and the rotating pipe (8) , one seat ring of the thrust bearing (9) is fixed to the end of the top column (601) away from the rubber ring (602), and the other seat ring is fixed to the rotating tube (8) close to the rubber ring (602) one end. 4. The drilling pipe assistance device according to claim 1, characterized in that the drainage guide groove (2) comprises a starting position (201), a landing position (202) and a drilling position (204); the guiding The control mechanism (4) includes a movable block (401), a guide elastic member (402) and a plurality of guide shafts (403), the movable block (401) is movably arranged in the connecting sleeve (1), and the movable block (401) ) is located above the bearing shaft (5); one end of the guide elastic member (402) is connected to the bottom of the movable block (401), and the other end is connected to the top of the bearing shaft (5), and the guide shaft (403) is passed through the the movable block (401), and the two ends of the guide shaft (403) pass through the drainage guide groove (2) to be fixedly connected with the blocking kit (3); when the guide shaft (403) is at the starting position (201) or the landing position ( 202), the blocking kit (3) blocks the drainage guide groove (2), and when the guide shaft (403) is located at the drilling position (204), the blocking kit (3) and the drainage guide groove ( 2) Phase separation. 5. The drilling pipe assisting device according to claim 4, characterized in that the guide control mechanism (4) further comprises a guide shaft (405) and an accommodating groove (406), the guide shaft (405) being installed in the At the bottom of the movable block (401), the accommodating groove (406) is arranged on the top of the bearing shaft (5); the guide shaft (405) is movably inserted into the accommodating groove (406), and the guiding elastic member (402) ) is sleeved on the guide shaft (405), and one end of the guide elastic member (402) abuts on the bottom of the accommodating groove (406), and the other end abuts on the bottom of the movable block (401). 6. The drilling pipe assistance device according to claim 1, characterized in that it further comprises a first radial bearing (10) and a second radial bearing (11), the first radial bearing (10), the first radial bearing (10), the second radial bearing (11) Two radial bearings (11) are sleeved on the bearing shaft (5), and the first radial bearing (10) and the second radial bearing (11) are located in the rotating tube (8); the first radial bearing The inner ring of (10) is fixedly connected to the bearing shaft (5), and there is a gap between the outer ring and the inner wall of the rotating tube (8); the second radial bearing (11) is located in the first radial bearing (10) away from the blockage At one end of the mechanism (6), the outer ring of the second radial bearing (11) is fixedly connected to the inner wall of the rotating tube (8), and there is a gap between the inner ring and the bearing shaft (5). 7. The drilling pipe assisting device according to claim 6, characterized in that the bearing shaft (5) is sleeved with a buffer elasticity between the first radial bearing (10) and the second radial bearing (11) A piece (15) and a stopper (16), the buffer elastic piece (15) is movably sleeved on the bearing shaft (5), and the stopper (16) is located on the buffer elastic piece (15) close to the second radial bearing (11), and the outer wall of the stopper (16) is fixedly connected to the inner wall of the rotating tube (8), there is a gap between the inner wall of the stopper (16) and the bearing shaft (5); the buffer elastic member ( One end of 15) is in contact with the bottom of the first radial bearing (10), and the other end is in contact with the top of the stopper (16). 8 . The drilling pipe assistance device according to claim 6 , wherein a backing ring ( 13 ) is also fixedly arranged on the bearing shaft ( 5 ), and the inner wall of the rotating pipe ( 8 ) is in the backing ring ( 13 ). 9 . ) A limiting block (14) is provided on the side close to the blocking mechanism (6), and the second radial bearing (11) is sandwiched between the backing ring (13) and the limiting block (14). 9. The drilling pipe assisting device according to any one of claims 1-8, characterized in that, a plurality of pressure relief holes (17) are provided on the side wall of the rotating pipe (8), and the rotating pipe (8) is provided with several pressure relief holes (17). ) bottom is equipped with a filter mechanism (18) for filtering the water body flowing into the rotating pipe (8). 10. The drilling pipe assisting device according to claim 9, wherein the filtering mechanism (18) comprises a blocking block (181), a current-limiting blocking block (182), and a blocking block (182) for blocking the current-limiting blocking block ( 182) A limit rod (183) moving in the direction of the pressure relief hole (17); the limit rod (183) is fixedly arranged in the rotating pipe (8), and the clamping block (181) is mounted on the rotating pipe (8) ) above the limiting rod (183), the current limiting blocking block (182) is movably arranged between the blocking block (181) and the limiting rod (183); The water inlet (184) blocked by the flow restriction blocking block (182).

Images