A rope coring anti-blocking inner tube assembly

Abstract

The present invention relates to the technical field of drilling equipment, and discloses a rope coring anti-blocking inner tube assembly, which includes a spear fishing mechanism, a spring card mechanism, a suspension mechanism, and an adjustment mechanism arranged in sequence along the rear section to the front section of the inner tube assembly. The front section of the inner tube assembly is also provided with a closed vibration chamber, which is opened in front of the adjustment mechanism, and a ball is installed in the vibration chamber. A liquid inlet and a liquid outlet are opened on the inner side wall of the vibration chamber, and the liquid inlet is connected to the inner chamber of the rear section of the inner tube assembly, and the liquid outlet extends to the outside of the inner tube assembly. The beneficial effect of the present invention is that the mud flowing into the vibration chamber will drive the ball inside the vibration chamber to produce circular motion, and the circular motion of the ball will produce significantly different periodic forces on the vibration chamber due to gravity, thereby converting the mud flow energy into high-frequency vibration, and transmitting it to the inner tube to achieve the anti-blocking function. At the same time, the newly developed inner tube assembly ensures that the length and outer diameter under the nominal size remain unchanged, which can maximize the degree of matching with existing drilling tools.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, in particular to a rope coring anti-blocking inner tube assembly. Background Art

[0002] At present, rope coring drilling technology has been popularized in geological core drilling, which has many advantages such as high drilling efficiency, short auxiliary time, low labor intensity, and good coring quality. Conventional rope coring drilling technology is mainly realized by rope coring drill tools, which include outer tube assembly and inner tube assembly. Among them, the inner tube assembly includes head mechanism, inner tube and clamping core assembly from top to bottom. The inner tube assembly usually referred to by the industry generally refers to the head mechanism used to connect the upper end of the inner tube after removing the inner tube and the clamping core assembly. The length is about 1m, which varies according to different nominal diameters. It is the core part of the rope coring drill tool that needs to realize the most functions and the most complex structural design.

[0003] Over the past 10 years, conventional rope coring drill tools have been continuously optimized and improved in combination with extensive engineering applications. The durability, stability and processing quality of various parts and components of manufacturers have been greatly improved. The supporting processes for industry applications have matured and the acceptance of technical workers has been very high. Conventional rope coring drill tools are single-action double-tube drill tools, that is, the outer tube of the drill tool rotates to drive the drill bit to carve rocks, and the inner tube of the drill tool remains relatively stationary to reduce the wear on the core entering the inner tube. When encountering incomplete formations, the broken core is very likely to slip along the joint surface during the process of entering the inner tube, forming a jam with the inner wall of the inner tube and causing the core to be blocked, and the drilling process will be forced to stop. The core cannot fill the inner tube, and the length of the coring per round is greatly shortened. According to the degree of core crushing, the footage that can be achieved in one round is forced to become multiple rounds to be achieved, which greatly increases the auxiliary time, especially when drilling deep holes, which will seriously affect the construction efficiency.

[0004] The existing drilling equipment that can achieve better rope coring anti-blocking function is mainly rope coring hydraulic hammer technology. This technology applies a certain frequency of impact energy through the hydraulic hammer on the basis of the drill bit rotating and grinding to cut the rock, accelerating the rock crushing effect of the drill bit to improve the drilling efficiency. The main purpose of its research and development is to accelerate the rock crushing of the drill bit, and core anti-blocking is only its incidental function. The rope coring hydraulic hammer is a conventional rope coring inner tube assembly with an impactor of about 1.2m superimposed on it. The specific length varies according to different nominal diameters. This method has a large impact energy. Most of the impact energy of the hydraulic hammer is transmitted to the drill bit through the outer tube to achieve accelerated rock crushing, and a small part of the impact energy is transmitted to the inner tube, which incidentally achieves a better core anti-blocking effect. The advantages of rope coring hydraulic hammer technology are outstanding, but its disadvantages are also very obvious. For many reasons, this technology has not been widely popularized for a long time, and its accompanying core blocking function has not been realized. The problems are summarized as follows: (1) The overall drilling tool is more complex and bulky. The increased length requires the core fishing process to be split into two parts at the hole mouth for separate fishing, which increases the cumbersomeness of the operation process; (2) The annular gap between the components of the hydraulic hammer is very small. If the mud solid content is slightly high or there are coarse particles, the hydraulic hammer will often get stuck and be in an inoperative state. Frequent disassembly and cleaning are required to restore the function; (3) The impact energy of the hydraulic hammer is large, which often causes the connecting parts to loosen or be damaged, and frequent inspection and replacement are required; (4) The pump pressure and flow rate required for the hydraulic hammer are greater than those of conventional drilling. Not only is the equipment demanded high, but the mud consumption will also increase when encountering a leaking formation; (5) The existing diamond drill bit technology has been greatly developed, and the drilling speed has been significantly improved compared with the past. The advantage of speeding up rock crushing by rope coring hydraulic hammer is no longer obvious. Due to the above reasons, the acceptance of rope coring hydraulic hammer technology among technical workers is not high. Most projects return to conventional rope coring after a period of use, and the attached anti-blocking function naturally cannot be used. Another simple core anti-blocking technical solution is to smooth the inner wall of the inner tube to reduce drag, but the core clamping component needs to increase the friction resistance to improve the effect of pulling out the core and preventing the core from falling. The required functions need to be balanced, and the actual effect of smooth drag reduction has not been verified. Summary of the invention

[0005] The object of the present invention is to provide a rope coring anti-blocking inner tube assembly to overcome the disadvantages of the prior art.

[0006] The objective of the present invention is achieved through the following technical solutions: a rope coring anti-blocking inner tube assembly, comprising a spear scooping mechanism, a spring card mechanism, a suspension mechanism, and an adjustment mechanism which are sequentially arranged along the rear section to the front section of the inner tube assembly; the front section of the inner tube assembly is also provided with a closed vibration chamber, the vibration chamber is arranged in front of the adjustment mechanism, a ball is installed in the vibration chamber, a liquid inlet hole and a liquid outlet hole are arranged on the inner side wall of the vibration chamber, the liquid inlet hole is communicated with the inner cavity of the rear section of the inner tube assembly, the liquid outlet hole extends to the outside of the inner tube assembly, a liquid inlet port is arranged on the inner cavity of the rear section of the inner tube assembly, and when the ball starts to work, the ball passes through the liquid outlet hole and the liquid inlet hole in sequence.

[0007] Preferably, the suspension mechanism includes a recovery pipe, a vibration column and a water diversion joint, the water diversion joint is a stepped shaft, the adjustment mechanism is sleeved on the minimum diameter section of the stepped shaft and can slide with each other, one end of the vibration column is provided with a cavity for accommodating the adjustment mechanism along its axial direction, the water diversion joint is detachably connected to the vibration column, the spring-cage mechanism can be retracted into the recovery pipe, the water diversion joint is detachably connected to the recovery pipe via the spring-cage mechanism, the spear scooping mechanism is installed at one end of the recovery pipe away from the spring-cage mechanism, the vibration cavity is provided on the vibration column and is located in front of the adjustment mechanism, the liquid inlet is communicated with the cavity, a water channel is provided in the stepped shaft, the water channel is communicated with the inner cavity of the recovery pipe, and the liquid inlet is provided on the recovery pipe.

[0008] Preferably, a limit block is provided in the vibration cavity, and the limit block is located at the center of the vibration cavity.

[0009] Preferably, the orthographic projection of the vibration cavity along its opening direction is an oblong, and the long side of the oblong is parallel to the axial centerline of the inner tube assembly.

[0010] Preferably, an arc-shaped groove is opened on the inner wall of the vibration cavity, the arc-shaped groove is closed at both ends, the opening direction of the vibration cavity is parallel to the surface where the arc-shaped groove is located, the liquid inlet and the liquid outlet are both located at the bottom of the arc-shaped groove, and a filter is installed on the liquid inlet.

[0011] Preferably, the adjustment mechanism includes a self-locking nut, an adjustment spring and a spring seat, the spring seat and the adjustment spring are sequentially sleeved on the minimum diameter section of the stepped shaft, the self-locking nut is screwed on the minimum diameter section of the stepped shaft, the adjustment spring is compressed and installed between the self-locking nut and the spring seat, and the spring seat is threadedly connected to the cavity.

[0012] Preferably, the ejection mechanism includes a pair of ejection pins, a pair of ejection calipers, an ejection frame, a locking gasket and a return spring. The pair of ejection pins are hinged in a herringbone shape in the recovery tube, and the pair of ejection calipers are hinged in a herringbone shape in the ejection frame. Each of the ejection calipers is hinged to a corresponding ejection pin. The rotating shaft at one end of the ejection pins that are hinged to each other is slidably installed in the ejection frame. The locking gasket is detachably installed at one end of the ejection frame close to the ejection pin. The return spring is sleeved on the ejection frame, and the two ends of the return spring are respectively against the locking gasket and the rotating shaft.

[0013] Preferably, the spear scooping mechanism comprises a spear scooping head, a positioning pressure block and a spear scooping seat, the spear scooping seat is clamped in the recovery tube and can slide against each other, the spear scooping head is rotatably mounted on the spear scooping seat, a locking spring is also installed in the spear scooping head, the locking spring is compressed and installed in the spear scooping head by the positioning pressure block, and the positioning pressure block is pressed against the spear scooping seat by the locking spring.

[0014] Preferably, the vibration column in the section where the vibration cavity is located is composed of a vibration base and a vibration cover plate, a part of the vibration cavity and a part of the limit block are located on the vibration base, and the remaining vibration cavity and the limit block are located on the vibration cover plate, and a threaded hole is also provided on the limit block, and the threaded hole passes through the vibration cover plate, and an A screw is screwed into the threaded hole, and the vibration cover plate is locked on the vibration base by the A screw.

[0015] Preferably, the water channel consists of a main water channel and a branch water channel, the main water channel is opened along the axis of the step shaft, the main water channel is connected to the inner cavity of the recovery pipe, and the branch water channel is opened along the radial direction of the step shaft, and the branch water channel is connected to the main water channel.

[0016] The present invention has the following advantages:

[0017] 1. The mud flowing into the vibration chamber will drive the balls inside the vibration chamber to produce circular motion. The running trajectory will repeatedly pass through the upper vertex and the lower vertex at a certain frequency. The force exerted by the balls on the vibrator at the upper vertex is the centrifugal force minus the gravity of the balls, and the force exerted by the balls on the vibrator at the lower vertex is the centrifugal force plus the gravity of the balls. The running speeds of the upper and lower vertices are close, and the centrifugal forces are approximately equal. The circular motion of the balls will produce significantly different periodic forces on the vibration chamber due to gravity, thereby converting the mud flow energy into high-frequency vibration and transmitting it to the inner tube to achieve the anti-blocking function.

[0018] 2. The ball moves along the inner wall of the vibration chamber, that is, its motion trajectory is an oblong, which increases the length of the ball in operation compared to the ordinary circular track, that is, the trajectory distance between the inlet and outlet holes of the vibration chamber is increased, so that the time for the mud to act on the ball to provide acceleration energy is increased, and the vibration amplitude of the vibrator is enhanced under the condition of diameter restriction.

[0019] 3. By adding a limit block in the middle of the vibration chamber, the situation where the ball may be suspended during high-speed operation can be avoided. At the same time, the water channel will be diverted according to the set ratio. Part of the mud will flow directly to the gap between the outer tube and the inner tube of the drill bit, and the other part of the mud will flow to the vibration chamber, and then flow to the gap between the outer tube and the inner tube of the drill bit. After the two parts of the mud merge, they will eventually flow to the drill bit and return to the borehole, allowing the mud to maintain its cooling and lubrication functions while providing the energy required for vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0021] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0022] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the water diversion joint;

[0024] Figure 5 for Figure 4 Schematic cross-sectional view of EE;

[0025] Figure 6 It is a structural schematic diagram of the card holder;

[0026] Figure 7 for Figure 2 A local enlarged schematic diagram of the middle A;

[0027] Figure 8 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0028] Fig. 9 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0029] Fig.10 for Figure 3 A partial enlarged schematic diagram of point D in the middle;

[0030] In the figure, 1-vibration chamber, 2-ball, 3-liquid inlet hole, 4-liquid outlet hole, 5-limiting block, 6-arc groove, 7-filter, 8-vibration cover, 9-A screw, 10-recovery pipe, 11-vibration column, 12-water diversion joint, 13-cavity, 14-water channel, 15-self-locking nut, 16-adjusting spring, 17-spring seat, 18-spring pin, 19-spring caliper, 20-spring frame, 21-locking gasket, 22-reset spring, 23-rotating shaft, 24-spear head, 25-positioning pressure block, 26-spear seat, 27-locking spring, 28-suspension ring, 29-washer. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figure 1 , 2 As shown in , 3 and 10, a rope coring anti-blocking inner tube assembly comprises a spear fishing mechanism, a spring card mechanism, a suspension mechanism and an adjustment mechanism which are sequentially arranged along the rear section to the front section of the inner tube assembly. The front section of the inner tube assembly is also provided with a closed vibration chamber 1, which is arranged in front of the adjustment mechanism. A ball 2 is installed in the vibration chamber 1. A liquid inlet 3 and a liquid outlet 4 are arranged on the inner side wall of the vibration chamber 1. The liquid inlet 3 is communicated with the inner cavity of the rear section of the inner tube assembly, and the liquid outlet 4 extends to the outside of the inner tube assembly. A liquid inlet is arranged on the inner cavity of the rear section of the inner tube assembly, and a filter screen 7 is installed on the liquid inlet. When the ball 2 starts to work, the ball 2 moves according to the pressure of the filter screen 7. The mud flowing into the vibration chamber 1 through the liquid outlet 4 and the liquid inlet 3 will drive the ball 2 inside the vibration chamber 1 to produce circular motion, and its running trajectory will repeatedly pass through the upper vertex and the lower vertex at a certain frequency. The force of the ball 2 on the vibrator at the upper vertex is the centrifugal force minus the gravity of the ball 2, and the force of the ball 2 on the vibrator at the lower vertex is the centrifugal force plus the gravity of the ball 2. The running speeds of the upper and lower vertices are close, and the centrifugal forces are approximately equal. The circular motion of the ball 2 will produce significantly different periodic forces on the vibration chamber 1 due to gravity, thereby converting the mud flow energy into high-frequency vibration, and transmitting it to the inner tube to achieve the anti-blocking function.

[0038] In this embodiment, if Figure 1 , 2As shown in , 3, 6, 7, and 9, the suspension mechanism includes a recovery pipe 10, a vibration column 11, a suspension ring 28, and a water diversion joint 12. The water diversion joint 12 is a stepped shaft. The adjustment mechanism is sleeved on the minimum diameter section of the stepped shaft and can slide with each other. One end of the vibration column 11 is provided with a cavity 13 for accommodating the adjustment mechanism along its axial centerline direction. The water diversion joint 12 is detachably connected to the vibration column 11 through threads. The spring mechanism includes a pair of spring pins 18, a pair of spring calipers 19, a spring frame 20, a locking gasket 21, and a reset spring 22. The pair of spring pins 18 are hinged in the recovery pipe 10 in a herringbone shape, and the pair of spring calipers 19 are hinged in the spring frame 20 in a herringbone shape. Each spring caliper 19 is hinged to a corresponding spring pin 18. The rotating shaft 23 at one end of the spring pins 18 that are hinged to each other is slidably installed in the spring frame 20. The locking gasket 21 is detachably installed in the spring frame 20 near the spring pins through a B screw. The spring 22 is sleeved on one end of the spring holder 20, and the two ends of the spring 22 are respectively against the locking gasket 21 and the rotating shaft 23, so that the spring caliper 19 is ejected from the recovery tube 10 by the spring 22. A suspension ring 28 is sleeved on the end of the stepped shaft away from the minimum diameter section, and the water diversion joint 12 and the spring holder 20 are detachably connected by threads. The suspension ring 28 is tightly pressed between the water diversion joint 12 and the spring holder 20. The outer diameter of the suspension ring 28 is slightly larger than the inner diameter of the seat ring in the outer tube assembly. When the suspension ring 28 sits on the seat ring, it reaches the lower dead center of the inner tube assembly, and the inner tube is put in place. The spear fishing mechanism is installed at the end of the recovery tube 10 away from the ejection mechanism. The vibration cavity 1 is opened on the vibration column 11 and is located in front of the adjustment mechanism. The liquid inlet hole 3 is connected with the cavity 13. A water channel 14 is opened in the stepped shaft. The water channel 14 is connected with the inner cavity of the recovery tube 10, and the liquid inlet is opened on the recovery tube 10.

[0039] In this embodiment, if Fig.10 As shown, a limit block 5 is provided in the vibration cavity 1, and the limit block 5 is located at the center of the vibration cavity 1. By adding the limit block 5 in the middle of the vibration cavity, the situation that the ball 2 may be suspended during high-speed operation can be avoided.

[0040] In this embodiment, if Fig.10 As shown, the positive projection of the vibration cavity 1 along its opening direction is an oblong, and the long side of the oblong is parallel to the axis of the inner tube assembly. The ball 2 moves along the inner wall of the vibration cavity 1, that is, its movement trajectory is an oblong, which increases the length of the ball 2 in operation compared to the ordinary circular track, that is, increases the trajectory distance between the inlet and outlet holes 4 of the vibration cavity 1, increases the time for the mud to act on the ball 2 to provide acceleration energy, and enhances the vibration amplitude of the vibrator under the condition of diameter restriction.

[0041] In this embodiment, if Fig.10As shown, an arc groove 6 is opened on the inner wall of the vibration cavity 1, and the arc groove 6 is closed at both ends. The opening direction of the vibration cavity 1 is parallel to the surface where the arc groove 6 is located. The liquid inlet hole 3 and the liquid outlet hole 4 are both located at the bottom of the arc groove 6, ensuring that the ball 2 can smoothly pass over the liquid inlet and outlet holes 4 to eliminate collision damage.

[0042] In this embodiment, if Figure 1 , 2 As shown in Figures 3 and 9, the adjusting mechanism includes a self-locking nut 15, an adjusting spring 16, a washer 29 and a spring seat 17. The washer 29, the spring seat 17 and the adjusting spring 16 are sequentially sleeved on the minimum diameter section of the stepped shaft. The self-locking nut 15 is screwed on the minimum diameter section of the stepped shaft. The adjusting spring 16 is compressed and installed between the self-locking nut 15 and the spring seat 17. The spring seat 17 is threadedly connected to the cavity 13. The length of the entire inner tube assembly is adjusted by adding or removing the washer 29, so that the spring seat 17 and the inner step of the drill bit maintain an appropriate gap, thereby simplifying the structure. At the same time, the spring 16 is adjusted to a certain preload force through the self-locking nut 15. At this time, the entire inner tube assembly has a fixed length. However, when the core needs to be pulled out, the inner tube can provide a downward pulling force through the friction between the retaining spring seat and the core. The spring will be compressed, resulting in an increase in the total length of the inner tube. The retaining spring seat will sit on the inner step of the drill bit, transferring the strong pulling force required to pull out the core from the inner tube to the outer tube.

[0043] In this embodiment, if Figure 1 , 2 As shown in 3 and 8, the spear fishing mechanism includes a spear fishing head 24, a positioning pressure block 25 and a spear fishing seat 26. The spear fishing seat 26 is stuck in the recovery pipe 10 and can slide with each other. The spear fishing head 24 is rotatably installed on the spear fishing seat 26. A locking spring 27 is also installed in the spear fishing head 24. The locking spring 27 is compressed and installed in the spear fishing head 24 through the positioning pressure block 25. The positioning pressure block 25 is pressed against the spear fishing seat 26 through the locking spring 27. When coring is required, the salvage device is lowered from the drill pipe to the upper end of the inner tube assembly, and the salvage hook can hook the spear fishing head 2 4, the salvage work is realized, and when the salvage hook hooks the salvage spearhead 24, the salvage device is lifted upward, and the salvage spearhead 24 is lifted upward to drive the recovery tube 10, forcing the spring clamp 19 to contract, so that the inner tube assembly is separated from the outer tube assembly, thereby lifting the inner tube up; when the coring is completed, the inner tube is dropped or pumped by the salvage device, and the suspension ring 28 sits on the seat ring on the outer tube, the spring clamp 19 opens with the help of spring tension and sticks to the inner wall of the spring clamp chamber in the outer tube, and the end face of the spring clamp 19 presses against the spring clamp stopper in the outer tube, and the inner tube assembly is limited at this time.

[0044] In this embodiment, if Fig.10As shown, the vibration column 11 of the section where the vibration cavity 1 is located is composed of a vibration base and a vibration cover plate 8. A part of the vibration cavity 1 and a part of the limit block 5 are located on the vibration base, and the remaining vibration cavity 1 and the limit block 5 are located on the vibration cover plate 8. A threaded hole is also opened on the limit block 5, and the threaded hole passes through the vibration cover plate 8. A screw 9 is screwed into the threaded hole. The vibration cover plate 8 is locked on the vibration base by the A screw 9. The structure is simple and easy to disassemble and assemble.

[0045] In this embodiment, if Figure 4 and 5 As shown, the water channel 14 consists of a main water channel and a branch water channel. The main water channel is opened along the axis of the stepped shaft, and is connected to the inner cavity of the recovery pipe 10. The branch water channel is opened along the radial direction of the stepped shaft, and is connected to the main water channel. The branch water channel has four threaded holes. Part of the branch water channel is blocked by screwing in screws, so that the water channel 14 is diverted according to the set ratio. Part of the mud will flow directly into the gap between the outer tube and the inner tube of the drill tool, and the other part of the mud will flow into the vibration chamber 1, and then flow into the gap between the outer tube and the inner tube of the drill tool. After the two parts of the mud merge, they will eventually flow to the drill bit and return to the borehole, so that the mud can maintain its cooling and lubrication functions while providing the energy required for vibration.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rope coring anti-blocking inner tube assembly, comprising a spearing mechanism, a snap mechanism, a suspension mechanism, and an adjustment mechanism sequentially arranged along the rear section to the front section of the inner tube assembly, characterized in that: The front section of the inner tube assembly is also provided with a closed vibration chamber (1), the vibration chamber (1) is opened in front of the adjustment mechanism, a ball (2) is installed in the vibration chamber (1), an inner side wall of the vibration chamber (1) is provided with a liquid inlet hole (3) and a liquid outlet hole (4), the liquid inlet hole (3) is communicated with the inner chamber of the rear section of the inner tube assembly, the liquid outlet hole (4) extends to the outside of the inner tube assembly, the inner chamber of the rear section of the inner tube assembly is provided with a liquid inlet, when the ball (2) starts to work, the ball (2) passes through the liquid outlet hole (4) and the liquid inlet hole (3) in sequence, the suspension mechanism comprises a recovery pipe (10), a vibration column (11) and a water diversion joint (12), the water diversion joint (12) is a stepped shaft The adjusting mechanism is sleeved on the minimum diameter section of the stepped shaft and can slide with each other; a cavity (13) for accommodating the adjusting mechanism is provided at one end of the vibration column (11) along the axis direction thereof; the water diversion joint (12) is detachably connected to the vibration column (11); the snap-in mechanism can be retracted into the recovery pipe (10); the water diversion joint (12) is detachably connected to the recovery pipe (10) via the snap-in mechanism; the spear catching mechanism is installed at one end of the recovery pipe (10) away from the snap-in mechanism; the vibration cavity (1) is provided on the vibration column (11) and is located in front of the adjusting mechanism; the liquid inlet hole (3) is communicated with the cavity (13); a water channel (14) is provided in the stepped shaft; The water channel (14) is in communication with the inner cavity of the recovery pipe (10); the liquid inlet is provided on the recovery pipe (10); an arc-shaped groove (6) is provided on the inner wall of the vibration chamber (1); the arc-shaped groove (6) is closed at both ends; the opening direction of the vibration chamber (1) is parallel to the surface where the arc-shaped groove (6) is located; the liquid inlet hole (3) and the liquid outlet hole (4) are both located at the bottom of the arc-shaped groove (6); a filter screen (7) is installed on the liquid inlet; the adjustment mechanism comprises a self-locking nut (15), an adjustment spring (16) and a spring seat (17); the spring seat (17) and the adjustment spring (16) are sequentially sleeved on the smallest diameter section of the stepped shaft; the self-locking nut (15) is screwed onto the smallest diameter section of the stepped shaft. The small diameter section, the adjusting spring (16) is compressed and installed between the self-locking nut (15) and the spring seat (17), the spring seat (17) is threadedly connected to the cavity (13), the ejection mechanism comprises a pair of ejection pins (18), a pair of ejection calipers (19), an ejection frame (20), a locking gasket (21) and a reset spring (22), the pair of the ejection pins (18) are hinged in a herringbone shape in the recovery pipe (10), the pair of the ejection calipers (19) are hinged in a herringbone shape in the ejection frame (20), each of the ejection calipers (19) is hinged to a corresponding one of the ejection pins (18), and the rotating shaft (23) at one end of the ejection pins (18) hinged to each other is slidably installed in the ejection frame (20),The locking gasket (21) is detachably mounted on one end of the ejection card frame (20) close to the ejection card pin (18); the return spring (22) is sleeved on the ejection card frame (20), and the two ends of the return spring (22) respectively abut against the locking gasket (21) and the rotating shaft (23); the spear catching mechanism comprises a spear catching head (24), a positioning pressure block (25) and a spear catching seat (26); the spear catching seat (26) is stuck in the recovery pipe (10) and can slide with each other; the spear catching head (24) is rotatably mounted on the spear catching seat (26); a locking spring (27) is also installed in the spear catching head (24); the locking spring (27) is compressed and installed in the spear catching head (24) by the positioning pressure block (25); the positioning pressure block (25) is pressed against the spear catching seat (26) by the locking spring (27).

2. The rope coring anti-blocking inner tube assembly according to claim 1, characterized in that: A limit block (5) is arranged in the vibration cavity (1), and the limit block (5) is located at the center of the vibration cavity (1).

3. The rope coring anti-blocking inner tube assembly according to claim 1, characterized in that: The orthographic projection of the vibration cavity (1) along its opening direction is an oblong, and the long side of the oblong is parallel to the axis of the inner tube assembly.

4. The rope coring anti-blocking inner tube assembly according to claim 2, characterized in that: The vibration column (11) in the section where the vibration cavity (1) is located is composed of a vibration base and a vibration cover plate (8), a portion of the vibration cavity (1) and a portion of the limit block (5) are located on the vibration base, and the remaining vibration cavity (1) and the limit block (5) are located on the vibration cover plate (8), and a threaded hole is also opened on the limit block (5), the threaded hole passes through the vibration cover plate (8), and an A screw (9) is screwed into the threaded hole, and the vibration cover plate (8) is locked on the vibration base by the A screw (9).

5. The rope coring anti-blocking inner tube assembly according to claim 1, characterized in that: The water channel (14) is composed of a main water channel and a branch water channel. The main water channel is opened along the axis of the stepped shaft and is connected to the inner cavity of the recovery pipe (10). The branch water channel is opened along the radial direction of the stepped shaft and is connected to the main water channel.

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