CN111706280B - Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool - Google Patents
Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool Download PDFInfo
- Publication number
- CN111706280B CN111706280B CN202010553732.9A CN202010553732A CN111706280B CN 111706280 B CN111706280 B CN 111706280B CN 202010553732 A CN202010553732 A CN 202010553732A CN 111706280 B CN111706280 B CN 111706280B
- Authority
- CN
- China
- Prior art keywords
- elastic
- clamp
- clip
- bullet
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
Abstract
A rope coring drilling tool inner pipe assembly elastic clip positioning mechanism comprises a recovery pipe, an elastic clip frame, an elastic clip limiting block, an elastic clip clamp, an elastic clip seat and a supporting plate; the recovery pipe is assembled with the fishing spearhead assembly, and the recovery pipe is sleeved with the elastic clamping frame; an elastic clamp limiting block, an elastic clamp seat and a supporting plate are arranged in the elastic clamp frame, wherein the elastic clamp limiting block, the elastic clamp and the supporting plate respectively comprise two parts which are bilaterally symmetrical; the left part and the right part of the elastic clip limiting block are hinged together, a hinged shaft of the elastic clip limiting block is arranged on the side wall of the recovery pipe, and the elastic clip limiting block and the hinged shaft are respectively hinged with the left part and the right part of the elastic clip pliers; the left part and the right part of the elastic clamp are hinged together, and a hinged shaft of the elastic clamp is assembled with the elastic clamp seat; the lower end face of the elastic clamping seat is contacted with the supporting plate; the left part and the right part of the supporting plate are hinged together, and a hinged shaft of the supporting plate is assembled with the elastic clamping frame. The invention can remove the dead-jacking structure of the elastic clamp and the elastic clamp stop head, so that the elastic clamp can be inwards recycled, and the aim of smoothly finishing the fishing of the inner pipe assembly is fulfilled.
Description
Technical Field
The invention relates to a rope coring drilling tool, in particular to an elastic clamp positioning mechanism of an inner pipe assembly of the rope coring drilling tool.
Background
To understand the subsurface geology, drilling and coring are often used to obtain true and reliable subsurface formation data. The rope coring method has the advantages of high drilling efficiency, low cost, few drilling accidents and the like, and is widely applied to various drilling engineering fields of geological exploration, hydrogeology, engineering investigation and the like, and the rope coring drilling tool is standardized and serialized at present.
The ultra-deep scientific drilling is a scientific exploration activity for developing geological research by coring an ultra-deep hole and recycling the obtained rock core, and a rope coring drilling process is also selected for improving the coring drilling efficiency and the rock core collection quality and saving the drilling cost. When the ultra-deep scientific drilling is used for drilling and coring in a complex stratum, the condition of core barrel blockage often occurs, the positioning mechanism of the inner barrel assembly of the existing rope coring drilling tool generally adopts two modes of ball clamp positioning and elastic clamp positioning, wherein the elastic clamp of the elastic clamp positioning mechanism adopts a single-point hinge mode, as shown in figure 1, the axial contact surface of the elastic clamp 6 and the elastic clamp stopper 12 is a plane, when the core is normally drilled and cored, the left part and the right part of the elastic clamp 6 can rotate inwards to the inside of the coring barrel 2, the elastic clamp limiting is removed, and the inner drilling assembly is smoothly salvaged to the ground; however, when a core blockage situation occurs, the core taking pipe 2 moves upwards under stress to drive the upper end face 6-1 of the elastic clamp and the elastic clamp stopper 12 to be abutted, the elastic clamp 6, the elastic clamp stopper, the elastic clamp chamber 11, the elastic clamp 6, the elastic clamp frame and the like form a rigid structure (as shown in the attached drawing 2) after losing a rotation space, so that the elastic clamp cannot be recovered, the inner pipe assembly fails to be salvaged, and at the moment, the in-hole drilling tool can be lifted to the ground surface only in a comprehensive drilling lifting mode for processing, so that the use efficiency of the rope drilling tool is greatly reduced. The other ball clamping positioning mode utilizes the rolling characteristic of the steel ball, the problem of jacking during core blocking can be avoided, but the stress between the positioning steel ball and the outer pipe is very large, the outer pipe assembly is easy to expand and crack from the connecting thread of the bullet clamping stop head and the bullet clamping chamber, so that accidents occur in the hole, the positioning steel ball is easy to deform after being extruded, the rolling and returning performance of the steel ball is weakened after repeated use, and the fishing reliability is reduced.
Disclosure of Invention
The invention provides a spring clip positioning mechanism of an inner pipe assembly of a rope core drilling tool, aiming at realizing rigid structural solution formed by abutting a spring clip and a spring clip stopper under the condition of blockage of a core barrel through the optimized design of the spring clip positioning mechanism, so that the spring clip can be inwards recycled, and the aim of smoothly finishing the fishing of the inner pipe assembly is fulfilled.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rope coring drilling tool inner pipe assembly elastic clip positioning mechanism comprises a recovery pipe, an elastic clip frame, an elastic clip limiting block, an elastic clip clamp, an elastic clip seat and a supporting plate; the upper end of the recovery pipe is assembled with a spearhead fishing component of the inner pipe assembly, an elastic clamp frame is sleeved in the recovery pipe, and two elastic clamp avoidance holes are symmetrically formed in the side wall of the recovery pipe; the cartridge clip frame is a sleeve pipe, two sides of the sleeve pipe are provided with axial long holes, the bottom of the cartridge clip frame is fixedly assembled with the water diversion sleeve of the inner pipe assembly, and a cartridge clip limiting block, a cartridge clip caliper, a cartridge clip seat and a supporting plate are arranged in the cartridge clip frame, wherein the cartridge clip limiting block, the cartridge clip caliper and the supporting plate respectively comprise two parts which are bilaterally symmetrical; the left part and the right part of the elastic clip limiting block are hinged together, two ends of a hinge shaft of the elastic clip limiting block are installed on the side wall of the recovery pipe, and the left part and the right part of the elastic clip limiting block are respectively hinged and assembled with the left part and the right part of the elastic clip pliers; the left part and the right part of the elastic clamp are hinged together, and a hinged shaft of the elastic clamp is assembled with the elastic clamp seat; the cartridge holder can move up and down along the central axis of the cartridge holder, and the lower end surface of the cartridge holder is contacted with the supporting plate; the left part and the right part of the supporting plate are hinged together, and a hinged shaft of the supporting plate is assembled with the elastic clamping frame.
According to the elastic clamp positioning mechanism for the inner pipe assembly of the rope core drill, when the elastic clamp is in an open state, the outer edges of the left part and the right part of the elastic clamp penetrate through the elastic clamp avoiding hole in the side wall of the recovery pipe and are clamped in the clamping groove of the elastic clamp chamber of the outer pipe assembly of the rope core drill.
The elastic clamp positioning mechanism of the rope core drill inner pipe assembly is also provided with an elastic clamp resetting component, and the elastic clamp resetting component comprises a pressing plate and an elastic clamp resetting spring; the pressing plate is fixed at the top of the elastic clamping frame; the elastic caliper reset spring is sleeved outside the elastic caliper frame, and the upper end and the lower end of the elastic caliper reset spring are respectively abutted against the pressing plate and the hinge shaft of the elastic caliper limiting block.
According to the elastic clamp positioning mechanism for the rope core drill inner pipe assembly, a first assembly hole, a second assembly hole and a third assembly hole are further formed in the side wall of the recovery pipe; the first assembling hole is used for assembling an elastic cylindrical pin hinged with the fishing spearhead component; the second assembling hole is used for assembling an articulated shaft of the elastic clamp limiting block; the third assembly hole is used for assembling a recovery pipe guide pin which provides a guide effect for the up-and-down movement of the recovery pipe in the process of lowering and recovering the inner pipe assembly.
Above-mentioned rope coring drilling tool inner tube assembly bullet card positioning mechanism, still be equipped with bullet card stopper articulated shaft up-and-down motion on the bullet card frame and dodge the hole, bullet card seat reciprocates spacer pin mounting hole, recovery tube uide pin mating holes and the articulated axle mounting hole of installing of backup pad, bullet card stopper articulated shaft up-and-down motion dodges the hole, bullet card seat reciprocates spacer pin mounting hole, recovery tube uide pin mating holes and the articulated axle mounting hole of installing of backup pad and arranges from top to bottom in proper order along bullet card frame the central axis.
The elastic clamp positioning mechanism of the rope core drill inner pipe assembly is characterized in that the elastic clamp seat is provided with an elastic clamp mounting part and an up-and-down movement guide part; the elastic caliper mounting part is of a rectangular groove structure, and two side walls of the elastic caliper mounting part are provided with elastic caliper hinge shaft assembling holes; the up-and-down motion guide part is provided with a limit hole matched with the up-and-down motion limit pin of the elastic clamping seat.
The elastic clamp positioning mechanism of the rope core drill inner pipe assembly is further provided with an elastic clamp seat reset spring, the elastic clamp seat reset spring is sleeved outside the elastic clamp frame, and the upper end and the lower end of the elastic clamp seat reset spring are respectively abutted against the bottom surface of an elastic clamp installation part of the elastic clamp seat and the annular step end surface arranged on the elastic clamp frame.
Above-mentioned rope coring drilling tool inner tube assembly bullet card positioning mechanism, the backup pad upper end be with bullet card seat motion guide part complex wedge face, be equipped with the recovery tube uide pin hole of dodging in the backup pad middle part, be equipped with backup pad articulated shaft mounting hole at the backup pad lower extreme.
Above-mentioned rope coring drilling tool inner tube assembly bullet card positioning mechanism still is equipped with backup pad jump ring and jump ring mounting groove that resets, the jump ring mounting groove is located the periphery of backup pad articulated shaft mounting hole, the backup pad jump ring that resets is arranged in the jump ring mounting groove.
According to the elastic clamp positioning mechanism for the inner pipe assembly of the rope core drill, the lower end of the elastic clamp frame is assembled with the water distribution sleeve of the inner pipe assembly through the elastic threaded connection structure, and the inner pipe assembly is carried on the seat ring of the outer pipe assembly through the suspension ring embedded between the elastic clamp frame and the water distribution sleeve in the normal drilling process of the drill.
The invention provides a rope coring drilling tool inner pipe assembly elastic clip positioning mechanism, which has the working principle that: in the drilling process of a complete stratum, as the elastic calipers do not have the phenomenon of top dead, the elastic calipers can rotate towards the interior of the elastic calipers during inner pipe fishing, the elastic calipers are removed from limiting, and then the elastic calipers are normally recovered, so that the fishing operation of the inner assembly is completed. When a core blockage situation occurs during drilling in a complex stratum, the elastic clamp is pushed upwards, the elastic clamp and the elastic clamp blocking head are propped, then the elastic clamp and the elastic clamp seat are forced to move downwards, the left part and the right part of the supporting plate are extruded to open towards two sides until the lower edge of the recovery pipe guide pin avoiding hole in the supporting plate is contacted with the recovery pipe guide pin, and the positions of the elastic clamp seat and the elastic clamp are limited through the supporting plate; after the inner pipe is fished, the fishing spear head assembly is hooked by the fisher to drive the recovery pipe to move upwards for an idle stroke L1, the recovery pipe guide pin follows the recovery pipe to move upwards for a stroke L1, the limiting effect of the support plate is relieved, at the moment, a rigid knot formed after the jacking is dissolved, and the elastic clamping seat can move downwards; the recovery pipe continuously moves upwards L2, in the process, the recovery pipe drives the elastic clamp to rotate inwards through the articulated shaft of the elastic clamp limiting block and the elastic clamp limiting block, and meanwhile, the elastic clamp seat is stressed to move downwards, namely, the articulated shaft of the elastic clamp moves downwards, the return spring of the elastic clamp seat is further compressed, and the support plate rotates towards two sides to realize space release; after the elastic clamp pliers rotate to pass through dead points, the elastic clamp seats reset under the elastic action of the elastic reset springs of the elastic clamp seats, the supporting plate resets under the elastic action of the reset snap springs of the supporting plate, the recovery pipe moves upwards for a certain distance continuously, inward recovery of the elastic clamp pliers is completed, the limiting effect of the elastic clamp is relieved, and fishing of the inner pipe assembly is achieved. Therefore, the invention realizes the rigid structural solution formed by abutting the elastic calipers and the elastic clamp blocking heads under the condition of blocking the core barrel, so that the elastic clamps can be inwards recycled, and the aim of smoothly finishing the fishing of the inner pipe assembly is fulfilled.
Drawings
FIG. 1 is a schematic diagram of a conventional inner tube assembly ejector retainer positioning mechanism for a wireline core drill;
FIG. 2 is a schematic diagram of a conventional spring clip positioning mechanism structure of an inner tube assembly of a rope core drilling tool in a dead-stop state of a spring clip and a spring clip stopper under the condition of blockage of a core tube;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a schematic view of a recovery pipe according to the present invention;
FIG. 5 is a schematic view of the structure of the cartridge holder of the present invention;
FIG. 6 is a schematic view of the cross-sectional structure A-A of FIG. 5;
FIG. 7 is a schematic view of an assembly structure of the snap caliper and the snap caliper limiting block;
FIG. 8 is a schematic view of the structure of the cartridge holder;
FIG. 9 is a schematic view of the cross-sectional structure B-B in FIG. 8;
FIG. 10 is a schematic view of the construction of the support plate of the present invention;
FIG. 11 is a schematic view of the cross-sectional structure C-C of FIG. 10;
fig. 12 is a schematic diagram of the working process of the present invention.
The list of labels in the figure is:
1. a spear fishing head component;
2. the device comprises a recovery pipe, 2-1, a first assembly hole, 2-2, a second assembly hole, 2-3, a spring clamp avoidance hole, 2-4 and a third assembly hole;
3. pressing a plate;
4. 4-1 of an elastic clamping frame, 4-1 of an elastic clamping limiting block articulated shaft up-and-down movement avoiding hole, 4-2 of an elastic clamping seat up-and-down movement limiting pin mounting hole, 4-3 of a recovery pipe guide pin matching hole, 4-4 of a supporting plate articulated shaft mounting hole, 4-5 of an annular step end face, 4-6 of an axial long hole;
5. a spring clip limiting block;
6. the elastic clamp comprises 6-1 parts of elastic clamp and an upper end face of the elastic clamp;
7. the elastic clamping seat 7-1, an elastic clamping clamp hinged shaft assembling hole 7-2 and a limiting hole;
8. 8-1 parts of a support plate, 8-2 parts of wedge-shaped surfaces, 8-3 parts of a recovery pipe guide pin avoiding hole, 8-4 parts of a support plate reset clamp spring mounting groove and 8-4 parts of a support plate hinge shaft mounting hole;
9. a suspension ring;
10. water distributing sleeves;
11. a cartridge chamber;
12. a bullet card stop head;
b1, an elastic cylindrical pin, B2, an articulated shaft of an elastic limiting block, B3, an articulated shaft of an elastic clamp, B4, an up-and-down moving limiting pin of an elastic clamp seat, B5, a guide pin of a recovery pipe, B6, an articulated shaft of a supporting plate, W1, an elastic clamp reset spring, W2, an elastic clamp reset spring, W3 and a supporting plate reset snap spring.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Referring to fig. 3, in the normal drilling process of the rope core drill, an inner pipe assembly is carried on a seat ring 13 of an outer pipe assembly through a suspension ring 9 embedded between an elastic clamp frame 4 and a water distribution sleeve 10, and the invention provides an elastic clamp positioning mechanism of the inner pipe assembly of the rope core drill, which comprises a recovery pipe 2, an elastic clamp frame 4, an elastic clamp limiting block 5, an elastic clamp pliers 6, an elastic clamp seat 7 and a supporting plate 8; the upper end of the recovery pipe 2 is hinged with a fishing spear head assembly 1 of the inner pipe assembly through an elastic cylindrical pin B1, an elastic clamping frame 4 is sleeved in the recovery pipe 2, and two elastic caliper avoiding holes 2-3 are symmetrically arranged on the side wall of the recovery pipe; the elastic clamping frame 4 is a sleeve with axial long holes 4-6 formed in two sides, the bottom of the elastic clamping frame 4 is fixedly assembled with a water distribution sleeve 10 of an inner pipe assembly through an elastic threaded connection structure, an elastic clamping limiting block 5, an elastic clamping clamp 6, an elastic clamping seat 7 and a supporting plate 8 are arranged in the elastic clamping frame 4, wherein the elastic clamping limiting block 5, the elastic clamping clamp 6 and the supporting plate 8 respectively comprise two parts which are bilaterally symmetrical; the left part and the right part of the elastic clip limiting block 5 are hinged together, two ends of an elastic clip limiting block hinging shaft B2 are installed on the side wall of the recovery pipe 2, and the left part and the right part of the elastic clip limiting block 5 are respectively hinged and assembled with the left part and the right part of the elastic clip pliers 6; the left part and the right part of the elastic caliper 6 are hinged together, and an articulated shaft B3 of the elastic caliper is assembled with the elastic caliper seat 7; the cartridge holder 7 can move up and down along the central axis of the cartridge holder 4, and the lower end surface of the cartridge holder is contacted with the supporting plate 8; the left part and the right part of the supporting plate 8 are hinged together, and a supporting plate hinge shaft B6 is assembled with the elastic clamping frame 4.
Referring to fig. 3 and 4, the side wall of the recovery pipe 2 of the elastic clip positioning mechanism of the inner pipe assembly of the rope core drill is further provided with a first assembly hole 2-1, a second assembly hole 2-2 and a third assembly hole 2-4; the first assembling hole 2-1 is used for assembling an elastic cylindrical pin B1 hinged by the recovery pipe 2 and the fishing spearhead component 1; the second assembling hole 2-2 is used for assembling an articulated shaft B3 of an elastic clip limiting block; the third fitting hole 2-4 is used for fitting a recovery pipe guide pin B5 for providing a guide function for the upward and downward movement of the recovery pipe 2 during the lowering and recovery of the inner pipe assembly.
Referring to fig. 3, 5 and 6, the spring clip positioning mechanism of the inner tube assembly of the rope core drill, provided by the invention, is characterized in that a spring clip limiting block articulated shaft up-and-down movement avoiding hole 4-1, a spring clip seat up-and-down movement limiting pin mounting hole 4-2, a recovery tube guide pin matching hole 4-3 and a support plate articulated shaft mounting hole 4-4 are further arranged on a spring clip frame 4, wherein the spring clip limiting block articulated shaft up-and-down movement avoiding hole 4-1, the spring clip seat up-and-down movement limiting pin mounting hole 4-2, the recovery tube guide pin matching hole 4-3 and the support plate articulated shaft mounting hole 4-4 are sequentially arranged along the central axis of the spring clip frame 4 from top to bottom.
Referring to fig. 3 and 7, in the elastic clamp positioning mechanism of the inner tube assembly of the rope core drill, when the elastic clamp 6 is in an open state, the outer edges of the left part and the right part of the elastic clamp 6 penetrate through the elastic clamp avoiding holes 2-3 on the side wall of the recovery tube 2 and are clamped in the clamping groove of the elastic clamp chamber 11 of the outer tube assembly of the rope core drill; the elastic clamp positioning mechanism of the inner pipe assembly of the rope core drill is also provided with an elastic clamp resetting component, the elastic clamp resetting component comprises a pressing plate 3 and an elastic clamp resetting spring W1, the pressing plate 3 is fixed at the top of the elastic clamp frame 4, the elastic clamp resetting spring W1 is sleeved outside the elastic clamp frame 4, and the upper end and the lower end of the elastic clamp resetting spring W1 are respectively abutted against the pressing plate 3 and an elastic clamp limiting block hinge shaft B2.
Referring to fig. 3, 8 and 9, in the spring clip positioning mechanism of the inner tube assembly of the rope core drill according to the present invention, the spring clip seat 7 is provided with a spring clip installation part and an up-and-down movement guide part, the spring clip installation part is of a rectangular groove structure, hinge shaft assembly holes 7-1 of the spring clip are provided on two side walls of the spring clip installation part, and the up-and-down movement guide part is provided with a limit hole 7-2 matched with an up-and-down movement limit pin B4 of the spring clip seat; the elastic clamp positioning mechanism of the inner pipe assembly of the rope core drill is also provided with an elastic clamp seat return spring W2, the elastic clamp seat return spring W2 is sleeved outside the elastic clamp frame 4, and the upper end and the lower end of the elastic clamp seat return spring W2 are respectively abutted against the bottom surface of an elastic clamp installation part of the elastic clamp seat 7 and the annular step end surface 4-5 arranged on the elastic clamp frame 4.
Referring to fig. 3, 10 and 11, in the elastic clamp positioning mechanism of the inner tube assembly of the rope core drill, the upper end of a supporting plate 8 is a wedge-shaped surface 8-1 matched with a motion guide part of an elastic clamp seat 7, a recovery tube guide pin avoiding hole 8-2 is arranged in the middle of the supporting plate 8, and a supporting plate hinge shaft mounting hole 8-4 is arranged at the lower end of the supporting plate 8; the support plate 8 is further provided with a support plate reset clamp spring W3 and a clamp spring installation groove 8-3, the clamp spring installation groove 8-3 is located on the periphery of the support plate hinge shaft installation hole 8-4, and the support plate reset clamp spring W3 is arranged in the clamp spring installation groove 8-3.
Referring to fig. 1, 2, 3 and 12, in the prior art, a single-point hinge mode is adopted for a spring clip clamp of a spring clip positioning mechanism of an inner pipe assembly of a rope core drill, an axial contact surface of the spring clip clamp 6 and a spring clip stopper 12 is a plane, and when the rope core drill normally drills and cores, the left part and the right part of the spring clip clamp 6 can rotate inwards to the inside of a core drill pipe 2, so that the limit of the spring clip is relieved, and the inner drill assembly can be smoothly salvaged to the ground; when the core blocking occurs, the core taking pipe 2 moves upwards under stress to drive the upper end surface 6-1 of the bullet clamp and the bullet clamp stop head 12 to be abutted, and after the bullet clamp 6 loses the rotation space, the bullet clamp stop head, the bullet clamping chamber 11, the bullet clamp 6, the bullet clamp frame and the like form a rigid structure, so that the bullet clamp cannot be recovered, and the inner pipe assembly fails to be salvaged. According to the elastic clamp positioning mechanism of the inner pipe assembly of the rope core drill, in the drilling process of a complete stratum, as the elastic clamp 6 is not in a dead jacking phenomenon, the elastic clamp 6 can rotate towards the inside of the elastic clamp frame 4 when the inner pipe is fished, the elastic clamp is normally recovered after the limit of the elastic clamp is removed, and the fishing operation of the inner assembly is completed; when a core blockage situation occurs during drilling in a complex stratum, the elastic caliper 6 and the recovery pipe 2 are pushed upwards, the elastic caliper 6 is tightly jacked with an elastic retaining head 12 in an outer pipe assembly, then the elastic caliper 6 and the elastic retaining seat 7 are forced to move downwards, the left part and the right part of the supporting plate 8 are extruded to open towards two sides until the lower edge of a recovery pipe guide pin avoiding hole 8-2 in the supporting plate 8 is contacted with a recovery pipe guide pin B5, the positions of the elastic retaining seat 7 and the elastic caliper 6 are limited by the supporting plate 8 (as shown in a state I in figure 12), after fishing of the inner pipe is started, the fisher hooks the fishing spear head assembly 1 to drive the recovery pipe 2 to move upwards for an idle stroke L1=9.7mm, the recovery pipe guide pin B5 follows the upward movement stroke L1=9.7mm of the recovery pipe 2 to release the limiting effect of the supporting plate 8, at the moment, a rigid knot formed after the jacking is dissolved, and the elastic retaining seat 7 can move downwards (as shown in a state II in figure 12), the recovery pipe 2 continues to move upwards by L2=4.6mm, in this process, the recovery pipe 2 drives the elastic caliper 6 to rotate inwards through the elastic caliper limiting block hinge shaft B2 and the elastic caliper limiting block 5, and meanwhile, the elastic caliper 7 moves downwards under the force of the elastic caliper hinge shaft B3, the elastic caliper return spring W2 is further compressed, the support plate 8 rotates towards two sides to realize space release (as shown in state iii in fig. 12), after the elastic caliper 6 rotates over a dead point, the elastic caliper 7 returns under the elastic force of the elastic caliper return spring W2, the support plate 8 returns under the elastic force of the support plate return spring W3, after the recovery pipe 2 continues to move upwards by a certain distance L3=14mm, inward recovery of the elastic caliper 6 is completed, the elastic caliper limiting effect is released, and fishing of the inner pipe of the assembly can be realized (as shown in state iv in fig. 12).
Claims (8)
1. A rope coring drilling tool inner pipe assembly elastic clip positioning mechanism is characterized by comprising a recovery pipe (2), an elastic clip frame (4), an elastic clip limiting block (5), elastic clip pliers (6), an elastic clip seat (7) and a supporting plate (8); the upper end of the recovery pipe (2) is assembled with a fishing spear head assembly (1) of the inner pipe assembly, an elastic clamping frame (4) is sleeved in the recovery pipe (2), and two elastic caliper avoiding holes (2-3) are symmetrically arranged on the side wall of the recovery pipe; the elastic clamping frame (4) is a sleeve with axial long holes (4-6) formed in two sides, the bottom of the elastic clamping frame (4) is fixedly assembled with the water distribution sleeve (10) of the inner pipe assembly, an elastic clamping limiting block (5), an elastic clamping clamp (6), an elastic clamping seat (7) and a supporting plate (8) are arranged in the elastic clamping frame (4), and the elastic clamping limiting block (5), the elastic clamping clamp (6) and the supporting plate (8) respectively comprise two parts which are bilaterally symmetrical; the left part and the right part of the elastic clip limiting block (5) are hinged together, two ends of a hinge shaft (B2) of the elastic clip limiting block are installed on the side wall of the recovery pipe (2), and the left part and the right part of the elastic clip limiting block (5) are respectively hinged and assembled with the left part and the right part of the elastic clip pliers (6); the left part and the right part of the elastic caliper (6) are hinged together, and an articulated shaft (B3) of the elastic caliper is assembled with the elastic caliper seat (7); the bullet clamping seat (7) can move up and down along the central axis of the bullet clamping frame (4), and the lower end surface of the bullet clamping seat is contacted with the supporting plate (8); the left part and the right part of the supporting plate (8) are hinged together, and a supporting plate hinge shaft (B6) is assembled with the elastic clamping frame (4);
the upper end of the supporting plate (8) is a wedge-shaped surface (8-1) matched with the motion guide part of the bullet clamping seat (7), the middle part of the supporting plate (8) is provided with a recovery pipe guide pin avoiding hole (8-2), and the lower end of the supporting plate (8) is provided with a supporting plate hinge shaft mounting hole (8-4);
the support plate (8) is further provided with a support plate reset clamp spring (W3) and a clamp spring mounting groove (8-3), the clamp spring mounting groove (8-3) is located on the periphery of the support plate hinge shaft mounting hole (8-4), and the support plate reset clamp spring (W3) is arranged in the clamp spring mounting groove (8-3).
2. The inner tube assembly bullet clip positioning mechanism of rope core drill according to claim 1, wherein the bullet clip caliper (6) passes through the bullet clip caliper avoiding hole (2-3) on the sidewall of the recovery tube (2) at the outer edges of the left and right parts in the open state, and is clipped in the clip groove of the outer tube assembly bullet clip chamber (11) of the rope core drill.
3. The inner tube assembly bullet clamp positioning mechanism of rope core drill according to claim 2, characterized in that it further comprises bullet clamp reset components, said bullet clamp reset components comprise a pressure plate (3) and a bullet clamp reset spring (W1); the pressing plate (3) is fixed at the top of the elastic clamping frame (4); the elastic caliper reset spring (W1) is sleeved outside the elastic caliper frame (4), and the upper end and the lower end of the elastic caliper reset spring respectively abut against the pressure plate (3) and the articulated shaft (B2) of the elastic caliper limiting block.
4. The inner pipe assembly bullet clip positioning mechanism of rope core drill according to claim 3, characterized in that the sidewall of said recovery pipe (2) is further provided with a first assembly hole (2-1), a second assembly hole (2-2) and a third assembly hole (2-4); the first assembling hole (2-1) is used for assembling an elastic cylindrical pin (B1) for hinging the recovery pipe (2) and the fishing spearhead component (1); the second assembling hole (2-2) is used for assembling an articulated shaft (B3) of the elastic clip limiting block; the third assembling hole (2-4) is used for assembling a recovery pipe guide pin (B5) which provides a guide function for the upward and downward movement of the recovery pipe (2) in the process of lowering and recovering the inner pipe assembly.
5. The rope coring drilling tool inner tube assembly ejector clamp positioning mechanism according to claim 3, wherein the ejector clamp frame (4) is further provided with an ejector clamp stopper hinge shaft up-and-down movement avoiding hole (4-1), an ejector clamp seat up-and-down movement limiting pin mounting hole (4-2), a recovery tube guide pin mating hole (4-3) and a support plate hinge shaft mounting hole (4-4), and the ejector clamp stopper hinge shaft up-and-down movement avoiding hole (4-1), the ejector clamp seat up-and-down movement limiting pin mounting hole (4-2), the recovery tube guide pin mating hole (4-3) and the support plate hinge shaft mounting hole (4-4) are sequentially arranged from top to bottom along the central axis of the ejector clamp frame (4).
6. The inner tube assembly bullet clamp positioning mechanism of rope core drill according to claim 3, characterized in that said bullet clamp seat (7) is provided with a bullet clamp mounting part and an up-and-down movement guide part; the elastic caliper mounting part is of a rectangular groove structure, and two side walls of the elastic caliper mounting part are provided with elastic caliper hinge shaft assembling holes (7-1); the up-and-down motion guide part is provided with a limit hole (7-2) matched with an up-and-down motion limit pin (B4) of the elastic clamping seat.
7. The inner tube assembly bullet clip positioning mechanism of rope core drill according to claim 6, characterized in that it further comprises a bullet clip seat return spring (W2), said bullet clip seat return spring (W2) is sleeved outside the bullet clip frame (4), and its upper and lower ends are respectively abutted against the bottom surface of the bullet clip mounting portion of the bullet clip seat (7) and the annular step end surface (4-5) provided on the bullet clip frame (4).
8. The rope core drill inner pipe assembly bullet clamp positioning mechanism according to claim 2, 3 or 4, characterized in that, the lower end of the bullet clamp frame (4) is assembled with the water dividing sleeve (10) of the inner pipe assembly through an elastic thread connection structure, and the inner pipe assembly is carried on the seat ring (13) of the outer pipe assembly through a suspension ring (9) embedded between the bullet clamp frame (4) and the water dividing sleeve (10) during the normal drilling process of the drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553732.9A CN111706280B (en) | 2020-06-17 | 2020-06-17 | Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553732.9A CN111706280B (en) | 2020-06-17 | 2020-06-17 | Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111706280A CN111706280A (en) | 2020-09-25 |
| CN111706280B true CN111706280B (en) | 2021-12-10 |
Family
ID=72541334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010553732.9A Active CN111706280B (en) | 2020-06-17 | 2020-06-17 | Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111706280B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290523A (en) * | 2021-07-08 | 2021-08-24 | 河北石探机械制造有限责任公司 | Double-wall drilling tool assembling device and assembling method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860555A (en) * | 1958-09-18 | 1961-02-08 | Longyear E J Co | Improvements in apparatus for core drilling in earth formations |
| CN201381816Y (en) * | 2009-03-19 | 2010-01-13 | 李纪章 | Rope core drill bit |
| CN104265220A (en) * | 2014-10-09 | 2015-01-07 | 吉林大学 | Wireline coring drill with function of warning on in-position arrival of inner pipe |
| CN106884626A (en) * | 2017-02-28 | 2017-06-23 | 中国地质科学院勘探技术研究所 | A kind of two-tube drilling tool detent mechanism of anti-dieback formula |
| CN206647083U (en) * | 2017-02-28 | 2017-11-17 | 中国地质科学院勘探技术研究所 | A kind of two-tube drilling tool detent mechanism |
| CN109025876A (en) * | 2018-08-13 | 2018-12-18 | 中国地质科学院勘探技术研究所 | A kind of rope salvaging type fluid power pressure core drill |
| CN208934631U (en) * | 2018-08-13 | 2019-06-04 | 中国地质科学院勘探技术研究所 | A kind of more piece hinge type bullet card positioning mechanism of cord coring drill |
-
2020
- 2020-06-17 CN CN202010553732.9A patent/CN111706280B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860555A (en) * | 1958-09-18 | 1961-02-08 | Longyear E J Co | Improvements in apparatus for core drilling in earth formations |
| CN201381816Y (en) * | 2009-03-19 | 2010-01-13 | 李纪章 | Rope core drill bit |
| CN104265220A (en) * | 2014-10-09 | 2015-01-07 | 吉林大学 | Wireline coring drill with function of warning on in-position arrival of inner pipe |
| CN106884626A (en) * | 2017-02-28 | 2017-06-23 | 中国地质科学院勘探技术研究所 | A kind of two-tube drilling tool detent mechanism of anti-dieback formula |
| CN206647083U (en) * | 2017-02-28 | 2017-11-17 | 中国地质科学院勘探技术研究所 | A kind of two-tube drilling tool detent mechanism |
| CN109025876A (en) * | 2018-08-13 | 2018-12-18 | 中国地质科学院勘探技术研究所 | A kind of rope salvaging type fluid power pressure core drill |
| CN208934631U (en) * | 2018-08-13 | 2019-06-04 | 中国地质科学院勘探技术研究所 | A kind of more piece hinge type bullet card positioning mechanism of cord coring drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111706280A (en) | 2020-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111706281B (en) | Rope coring drilling tool | |
| US7552764B2 (en) | Tubular handling device | |
| EP0678653B1 (en) | Tool for use in system for in situ replacement of cutting means for a ground drill | |
| CN110821442B (en) | Integral fishable and drillable bridge plug | |
| US9399898B2 (en) | Core drilling tools with retractably lockable driven latch mechanisms | |
| CN111706280B (en) | Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool | |
| US11873714B2 (en) | Underground drill rig and systems and methods of using same | |
| US20200003021A1 (en) | Reverse-circulation drilling assemblies and methods of using same | |
| CN106884626B (en) | Double-barrelled drilling tool positioning mechanism of dead formula of preventing top | |
| CN216741394U (en) | Underground pipe column centralizer | |
| CN112627755A (en) | Lifting drilling type large-diameter well bottom in-situ pressure maintaining coring drilling tool | |
| CA2441138C (en) | Removal of tubulars from wells | |
| CN111119776B (en) | Rope core drilling tool suitable for large-caliber horizontal engineering geological exploration | |
| CN116838277A (en) | Impact press-in type rope coring drilling device and process | |
| CN115538965A (en) | Press-in type rope coring device | |
| CN103015931B (en) | The system of coring of coring with drilling | |
| CN113356786B (en) | Bidirectional slip packer using fishing spear to unseal and force releasing | |
| CN211623372U (en) | Rope coring drilling tool suitable for large-caliber horizontal engineering geological exploration | |
| CN109281627B (en) | Multisection hinge type anti-top dead spring card positioning mechanism | |
| CN211715087U (en) | Novel fisher | |
| US4813730A (en) | Retrieval device for a well control tool | |
| WO2015130396A1 (en) | Core drilling tools with retractably lockable driven latch mechanisms | |
| CN111706283B (en) | Core tube one-way valve mechanism of rope coring drilling tool | |
| CN220353841U (en) | Mechanical release device for LWF logging system | |
| CN217976140U (en) | Valve ball and ball seat fishing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |