A type of ejector device

Abstract

This invention belongs to the field of drilling engineering technology and discloses a core extraction device, including a core extraction cylinder assembly, an active roller, and a receiving assembly. The core extraction cylinder assembly includes a locking sleeve and a core extraction cylinder body connected in communication. The locking sleeve is used to tighten the inner cylinder of the core extraction cylinder, in which a core is placed. The active roller is rotatably mounted on the core extraction cylinder body and can roll and contact the core to move the core out of the inner cylinder. The receiving assembly includes a guide slide, which is arc-shaped, with one end facing the end of the core extraction cylinder body away from the locking sleeve, and the other end extending to the core collection area. The active roller can drive the core slowly downward. When the core moves to the outlet end of the core extraction cylinder body, it can slide out along the guide slide and fall into the core collection area. This core extraction device can control the inner cylinder to always be in a stable state and ensure the smoothness of the core extraction process, effectively simplifying the process. The core extraction process does not require much human intervention, has a fast extraction speed, and a high safety factor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling engineering, and in particular to a core delivery device. BACKGROUND

[0002] Drilling coring is a process of taking out large rock samples (i.e. cores) from the ground using a coring tool during drilling, and its purpose is to master the underground geological conditions and directly obtain reliable underground rock stratum data. Currently, a medium-long barrel coring tool is usually used in the construction stage. After the coring tool completes coring, it needs to be moved out of the wellbore and the core inside it needs to be taken out, and then the output core is collected by geologists and the geological conditions are analyzed.

[0003] In the existing technology, whether the core is delivered on the ground or on the drilling platform during the operation of the medium-long barrel coring tool, it is usually controlled by manpower and the core is delivered by sliding out of the barrel relying on the self-weight of the core. This core delivery method is too primitive, requires sufficient physical reserves and control of the construction personnel, and has the risk of swinging and injuring people and falling of core fragments. Multiple people are needed to work together for core delivery at one time. The existing technology has the following disadvantages: 1) the coring tool is time-consuming and laborious to disassemble; 2) the labor intensity of personnel is high, and the physical strength and technical experience of the construction personnel are required; 3) the existing core delivery method has low safety and controllability, and is prone to damage to the core and injury to the construction personnel; and 4) there is a great hidden harm, which causes cumulative harm to the construction personnel.

[0004] Therefore, there is an urgent need for a core delivery device to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a core delivery device that can simplify the process, does not require excessive human intervention during the core delivery process, has a fast core delivery speed, a high safety factor, can shorten the construction period, and speed up the progress of drilling engineering.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A core delivery device is provided, comprising:

[0008] A core delivery barrel assembly comprising a locking sleeve and a core delivery barrel body connected in communication, the locking sleeve being configured to clamp an inner barrel of a coring barrel, and the inner barrel being provided with a core;

[0009] A driving roller is rotatably arranged on the core delivery barrel body and can rollingly contact the core to move the core out of the inner barrel;

[0010] A receiving assembly comprising a guide chute, the guide chute being arc-shaped, one end of the guide chute being opposite to one end of the core delivery barrel body away from the locking sleeve, and the other end extending to a core collection area.

[0011] As a preferred scheme of the core taking-out device provided by the application, a first driving member is arranged outside the core taking-out barrel, an output end of the first driving member is in transmission connection with the driving roller, and a notch is arranged on the barrel wall of the core taking-out barrel, and the driving roller can pass through the notch and rollingly contact the core.

[0012] As a preferred scheme of the core taking-out device provided by the application, a plurality of auxiliary rollers are rotatably arranged on the core taking-out barrel, and the notch is arranged on the barrel wall of the core taking-out barrel and opposite to each auxiliary roller, and the auxiliary roller can pass through the corresponding notch and rollingly contact the core.

[0013] As a preferred scheme of the core taking-out device provided by the application, the driving roller and the auxiliary roller are connected with a second driving member, and the second driving member is used to drive the driving roller and the auxiliary roller to approach or move away from the core.

[0014] As a preferred scheme of the core taking-out device provided by the application, a transmission support is further arranged, an output end of the second driving member is in transmission connection with a first rotating shaft, and a second rotating shaft is coaxially connected to the driving roller and the auxiliary roller, the second rotating shaft is parallel to the first rotating shaft and connected to the first rotating shaft through the transmission support, and the second driving member drives the first rotating shaft to rotate, so as to drive the driving roller or the auxiliary roller to approach or move away from the core.

[0015] As a preferred scheme of the core taking-out device provided by the application, a friction member is further arranged, the friction member can pass through the notch and slide with the core.

[0016] As a preferred scheme of the core taking-out device provided by the application, a hydraulic pump is further arranged, an oil conveying pipeline is arranged on the core taking-out barrel in a spaced manner, the friction member is elastically arranged at a position opposite to each notch, and the hydraulic pump can pump oil into the oil conveying pipeline, so as to drive the friction member to approach the core.

[0017] As a preferred scheme of the core taking-out device provided by the application, an operation port is arranged on the barrel wall of the core taking-out barrel, and a cutting tool can pass through the operation port to cut the core in the core taking-out barrel.

[0018] As a preferred scheme of the core taking-out device, the receiving assembly further comprises a guide cylinder, the core taking-out cylinder is provided with a connecting cylinder at one end away from the locking sleeve, a first connecting plate is annularly arranged on the core taking-out cylinder, a second connecting plate is annularly arranged on the guide cylinder, the connecting cylinder is inserted into the guide cylinder, the first connecting plate and the second connecting plate are opposite and connected, and the guide slide is connected to one end of the guide cylinder away from the core taking-out cylinder.

[0019] As a preferred scheme of the core taking-out device, a stop mechanism is arranged on the receiving assembly, the stop mechanism comprises a baffle and an operating handle, two ear plates are spaced apart and protruded on the guide slide, the baffle is rotatably connected to one end of the ear plate away from the guide slide, and the operating handle is used to drive the baffle to rotate to block the core from falling.

[0020] The core taking-out device has the following beneficial effects:

[0021] The core taking-out device comprises a core taking-out cylinder assembly, a driving roller and a receiving assembly. The core taking-out cylinder assembly comprises a locking sleeve and a core taking-out cylinder which are connected in communication. The locking sleeve is used to clamp an inner cylinder of a coring barrel. The inner cylinder is provided with a core. The driving roller is rotatably arranged on the core taking-out cylinder and can be in rolling contact with the core to move the core out of the inner cylinder. The receiving assembly comprises a guide slide which is arc-shaped. One end of the guide slide is opposite to one end of the core taking-out cylinder away from the locking sleeve. The other end of the guide slide extends to a core collecting area. After the coring barrel reaches the wellhead, the inner cylinder in the coring barrel is extracted. The inner cylinder is fixed on the core taking-out cylinder assembly through the locking sleeve. The core in the inner cylinder is moved out of the inner cylinder by a distance. The core is exposed from a port of the inner cylinder. The driving roller can be in contact with the exposed core in the inner cylinder. Then, the driving roller is driven to rotate relative to the core taking-out cylinder. The core is exposed more under the action of the rolling contact with the roller. That is, the driving roller can slowly drive the core downward. When the core moves to an outlet end of the core taking-out cylinder, the core can slide along the guide slide and fall into the core collecting area. The core collecting area can be the ground or a specially built platform. Geologists can collect the fallen core and perform geological analysis. The core taking-out device can keep the inner cylinder in a stable state and ensure the smoothness of the core taking-out process. The process is effectively simplified. The core taking-out process does not need much human intervention. The core taking-out speed is fast. The safety factor is high. The construction period can be shortened. The progress of the drilling engineering can be accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a first axonometric view of the core taking-out cylinder assembly provided by the embodiment of the present application;

[0023] Figure 2is a second axonometric view of the core outlet barrel assembly provided by the specific embodiment of the present application;

[0024] Figure 3 is a first cross-sectional view of the core outlet barrel assembly provided by the specific embodiment of the present application;

[0025] Figure 4 is a second cross-sectional view of the core outlet barrel assembly provided by the specific embodiment of the present application;

[0026] Figure 5 is a structural schematic view of the receiving assembly provided by the specific embodiment of the present application;

[0027] Figure 6 is a transmission schematic view of the hydraulic pump provided by the specific embodiment of the present application.

[0028] in the figure:

[0029] 1, core outlet barrel assembly; 2, driving roller; 3, receiving assembly; 4, first driving member; 5, auxiliary roller; 8, master control unit; 9, wire;

[0030] 11, locking sleeve; 12, core outlet barrel body; 13, connecting barrel body;

[0031] 111, half ring; 112, extension;

[0032] 121, notch; 122, operation port; 123, first connecting plate; 124, mounting plate;

[0033] 31, guide chute; 32, guide barrel body; 33, stop mechanism; 34, base; 35, support rib plate; 36, traveling wheel;

[0034] 311, arc-shaped plate; 312, ear plate; 321, second connecting plate;

[0035] 331, baffle; 332, operation handle; 333, pressure-bearing member; 3321, pressing portion; 3322, force transmission arm;

[0036] 61, second driving member; 62, transmission support; 63, first rotating shaft; 64, second rotating shaft;

[0037] 71, friction member; 72, oil delivery pipeline; 73, hydraulic assembly chamber;

[0038] 731, hydraulic pump; 732, piston rod; 733, throttle valve; 734, one-way valve; 735, reversing valve; 736, overflow valve. DETAILED DESCRIPTION

[0039] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only those structures related to the application are shown in the drawings.

[0040] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0043] As Figures 1 to 5 shown, the present embodiment provides a core taking device, which comprises a core taking barrel assembly 1, a driving roller 2 and a receiving assembly 3.

[0044] Referring to Figure 1 , the core taking barrel assembly 1 comprises a locking sleeve 11 and a core taking barrel body 12 which are connected in communication. The locking sleeve 11 is used to clamp the inner barrel of the core taking barrel, and the inner barrel is provided with a core. The driving roller 2 is rotatably arranged on the core taking barrel body 12 and can be in rolling contact with the core, so as to move the core out of the inner barrel. Referring to Figure 5The receiving assembly 3 comprises a guide chute 31, which is arc-shaped, one end of the guide chute 31 is opposite to the end of the core barrel body 12 away from the locking sleeve 11, and the other end extends to the core collecting area. After the core barrel reaches the wellhead, the inner barrel in the core barrel is extracted, the inner barrel is fixed on the core barrel assembly 1 through the locking sleeve 11, and the core in the inner barrel is driven to move out of the end of the inner barrel, that is, the core is exposed from the port of the inner barrel, so that the driving roller 2 can contact the core exposed in the inner barrel. Then, the driving roller 2 is driven to rotate relative to the core barrel body 12, so that the core is exposed more under the rolling contact of the roller, that is, the driving roller 2 can drive the core to slowly descend. When the core moves to the outlet end of the core barrel body 12, it can slide out along the guide chute 31 and fall on the core collecting area. The core collecting area can be the ground or a specially built platform. The geologist then collects the fallen core and performs geological analysis.

[0045] The core barrel device can control the inner barrel to be always in a stable state, and ensures the smoothness of the core barrel during the core taking process, effectively simplifies the process, and the core taking process does not need too much human intervention, the core taking speed is fast, the safety factor is high, the construction period can be shortened, and the progress of the drilling engineering can be accelerated.

[0046] Referring to Figure 1 , the locking sleeve 11 comprises two oppositely arranged half rings 111. One end of the two half rings 111 is connected to each other, and the other end is provided with an extension 112, and the extension 112 is provided with a through hole. When the inner barrel is clamped, a fastening bolt can be used to pass through the through holes in the two extensions 112 in sequence and be threadedly connected with a nut, so as to realize the fixed connection of the inner barrel and the whole core barrel device, and ensure the stability of the inner barrel.

[0047] Referring to Figure 1 and Figure 2 , the core barrel body 12 is provided with a first driving member 4 outside, and the output end of the first driving member 4 is in transmission connection with the driving roller 2, so as to drive the driving roller 2 to rotate. The barrel wall of the core barrel body 12 is provided with a notch 121, and the driving roller 2 can pass through the notch 121 to roll with the core, so as to push the core to slide down stably. By arranging the first driving member 4 outside the core barrel body 12 and arranging the notch 121 through which the driving roller 2 can pass, the space occupied inside the core barrel body 12 can be reduced.

[0048] Further, the driving roller 2 is polygonal in the cross section perpendicular to the axial direction, that is, the circumferential direction of the driving roller 2 is composed of a plurality of continuous planes, which can improve the contact area between the driving roller 2 and the surface of the core, thereby improving the friction between the driving roller 2 and the surface of the core. The friction can drive the core to stably slide down.

[0049] Referring to Figure 1 ,Figure 2 as well as Figure 3 The core extraction device also includes multiple auxiliary rollers 5. Each auxiliary roller 5 is rotatably mounted on the core extraction cylinder 12. A notch 121 is provided on the cylinder wall of the core extraction cylinder 12, directly opposite each auxiliary roller 5, allowing the auxiliary roller 5 to pass through the corresponding notch 121 and roll into contact with the core. Unlike the aforementioned active roller 2, the auxiliary rollers 5 roll under the influence of the core, providing support and frictional resistance as the core slides down, ensuring a smooth descent.

[0050] See Figure 3 In this embodiment, one active roller 2 and two auxiliary rollers 5 are provided, with the three rollers evenly distributed circumferentially around the core exit cylinder 12. Correspondingly, three notches 121 are provided on the core exit cylinder 12, and the three rollers correspond one-to-one with these three notches 121, allowing them to pass through the corresponding notches 121 and roll into contact with the core. Because the three rollers are evenly distributed, the uniformity of the circumferential force on the core is ensured, enabling the core to slide down stably.

[0051] Furthermore, the auxiliary roller 5 has a polygonal cross-section perpendicular to the axial direction, meaning that the circumference of the auxiliary roller 5 is composed of multiple continuous planes. This can increase the contact area between the auxiliary roller 5 and the core surface, thereby increasing the friction between the auxiliary roller 5 and the core surface and preventing the core from sliding down uncontrollably and rapidly, which could cause injury to people on the ground.

[0052] See Figure 1 and Figure 2 Both the active roller 2 and the auxiliary roller 5 are connected to a second drive unit 61, which drives the active roller 2 and the auxiliary roller 5 to move closer to or away from the core. When the core is positioned between the three rollers, the second drive unit 61 drives the three rollers closer to and into contact with the core. During core extraction, the three rollers can be adjusted to maintain appropriate pressure between them and the core surface, thus keeping the core's descent speed within a preset range. After core extraction is complete, the second drive unit 61 drives the three rollers outward to prepare for the next core extraction.

[0053] See Figure 3 Each of the active roller 2 and the two auxiliary rollers 5 is connected to a second drive unit 61, which can control the active roller 2 and the two auxiliary rollers 5 to move closer to or further away from the core, thus increasing flexibility.

[0054] See Figure 2The second driving component 61 is connected to the active roller 2, and the first driving component 4 is connected to the auxiliary rollers 5, all via a transmission bracket 62, to drive the active roller 2 and the two auxiliary rollers 5 closer to or further away from the core. Specifically, the output end of the second driving component 61 is connected to a first rotating shaft 63, the extension direction of which is parallel to the tangent direction of the core outlet cylinder 12. A second rotating shaft 64 is coaxially connected to both the active roller 2 and the auxiliary rollers 5, parallel to the first rotating shaft 63, and connected to the first rotating shaft 63 via the transmission bracket 62. When the second driving component 61 is activated, it drives the first rotating shaft 63 to rotate around its own axis, thereby causing the transmission bracket 62 to swing around the axis of the first rotating shaft 63. The second rotating shaft 64, driven by the transmission bracket 62, swings synchronously relative to the axis of the first rotating shaft 63, thus realizing the movement of the active roller 2 and the auxiliary rollers 5 closer to or further away from the core.

[0055] See Figure 2 The transmission bracket 62 is in the shape of an inverted Y. The main body of the Y-shaped transmission bracket 62 is connected to the first rotating shaft 63, and the two branches of the Y-shaped transmission bracket 62 are respectively connected to the two ends of the second rotating shaft 64. The active roller 2 and the auxiliary roller 5 are located between the two branches of the corresponding Y-shaped transmission bracket 62 so that the active roller 2 and the auxiliary roller 5 are more stable when swinging with the transmission bracket 62.

[0056] In this embodiment, optionally, both the first driving component 4 and the second driving component 61 are servo motors.

[0057] Optionally, a friction element 71 is also connected to the core exit cylinder 12. The friction element 71 can pass through the aforementioned notch 121 and slide in contact with the core. There is a large frictional force between the friction element 71 and the core, which can support the core and prevent it from falling uncontrollably to the ground, thus avoiding dangerous accidents and improving safety during the core exit process.

[0058] In this embodiment, see Figure 4 The core tube 12 has three notches 121. Correspondingly, there are three friction elements 71. The three friction elements 71 correspond one-to-one with the three notches 121 and pass through the corresponding notches 121 to contact the core. Due to the obstruction effect of the friction elements 71, the speed of the core can be prevented from becoming uncontrollable when it slides down.

[0059] In this embodiment, the friction force between the friction element 71 and the rock core is adjustable. See also Figure 1 The outer wall of the outlet cylinder 12 is connected to a hydraulic assembly chamber 73, which houses a hydraulic pump. (See also...) Figure 1 and Figure 4An oil supply line 72 is provided around the outer spacer ring of the core outlet cylinder 12. Friction elements 71, as described above, are retractably installed at positions corresponding to each notch 121 and the oil supply line 72. A hydraulic pump pumps oil into the oil supply line 72 to drive the friction elements 71 closer to the core and into contact with it. The pump can also adjust the pressure between the friction elements 71 and the core, thereby regulating the sliding friction between them to keep the core's descent speed within a preset range.

[0060] See Figure 6 The diagram shows the working arrangement within the hydraulic assembly chamber 73. A hydraulic pump is connected to a servo hydraulic cylinder. A piston rod 732 is retractably mounted inside the servo hydraulic cylinder, and a friction element 71 is connected to the end of the piston rod 732. The hydraulic pump can pump oil into the two chambers of the cylinder to drive the piston rod 732 to move the friction element 71 closer to or away from the core.

[0061] When the core reaches the guide slide 31, the hydraulic pump can increase the clamping force of the three friction parts 71 on the core to break it, so that the broken core can slide out smoothly from the core outlet cylinder 12 and slide down the guide slide 31 to the core collection area.

[0062] Preferably, in this embodiment, the friction element 71 is a friction block, and tungsten carbide powder particles are welded to the side of the friction block facing the rock core so that there is sufficient friction between the friction block and the rock core.

[0063] See Figure 6 A throttle valve 733, a check valve 734, a directional valve 735, and a relief valve 736 are also provided between the hydraulic pump and the servo hydraulic cylinder to ensure the normal operation of the piston rod 732. The connection between the hydraulic pump and the servo hydraulic cylinder is prior art well known to those skilled in the art and will not be described in detail here.

[0064] See Figure 2 and Figure 4 Two mounting plates 124 protrude from both sides of each notch 121 on the outer side of the outlet cylinder 12, and the extension direction of each mounting plate 124 is parallel to the length direction of the outlet cylinder 12. The second driving component 61 is fixedly connected to the mounting plate 124, specifically located on the side of one mounting plate 124 opposite to the other mounting plate 124. The two ends of the first rotating shaft 63 are rotatably connected to the corresponding two mounting plates 124. The oil pipeline 72 passes through the mounting plate 124, and the mounting plate 124 can support the oil pipeline 72.

[0065] See Figure 1A central control unit 8 is also provided outside the core exit cylinder 12. The central control unit 8 is connected to the first drive component 4, the second drive component 61, and the hydraulic assembly chamber 73 via wires 9 to achieve automatic control of the first drive component 4, the second drive component 61, and the hydraulic assembly chamber 73. For example, a predetermined program can be set in the central control unit to achieve electrically controlled core exit, which allows control over the rotational speed of the first drive component 4 and the second drive component 61 to improve the smoothness of core exit and avoid core jamming.

[0066] It is understood that the number of auxiliary rollers 5 and friction elements 71 in this embodiment is not limited to the number in this embodiment, and can be set according to specific design requirements in other embodiments. For example, the core exit cylinder 12 is provided with five notches 121, one of which is equipped with an active roller 2, and the other four notches 121 are each equipped with an auxiliary roller 5. Furthermore, each notch 121 is equipped with a friction element 71, for a total of five friction elements 71, to ensure stable support of the core, ensuring the smoothness of the core's descent and making the core exit operation safer.

[0067] See Figure 1 An operating port 122 is provided on the wall of the core-exiting cylinder 12. A cutting tool can pass through the operating port 122 to cut the core inside the core-exiting cylinder 12. When the core is too hard to be clamped by the clamping force of the friction element 71, the cutting tool can be inserted into the operating port 122 to cut it. The cutting tool can be a cutter, which can cut the core by striking it. In addition, the operating port 122 also serves as an observation window, through which the core-exiting process can be observed, and if the core is not clamped in time, it can be broken by striking it with an external cutting tool.

[0068] See Figure 5 The receiving component 3 also includes a guide cylinder 32. The guide cylinder 32 is located at the upper end of the guide slide 31. See also... Figure 1 and Figure 2A connecting cylinder 13 is provided at the end of the core tube 12 away from the locking sleeve 11. A first connecting plate 123 is provided on the upper ring of the core tube 12, and a second connecting plate 321 is provided on the upper ring of the guide cylinder 32. When the entire core tube assembly 1 is installed onto the receiving assembly 3, the lower connecting cylinder 13 is inserted into the guide cylinder 32, and the first connecting plate 123 and the second connecting plate 321 are aligned and connected. After connection, the guide slide 31 is located at the end of the guide cylinder 32 away from the core tube 12. Inserting the connecting cylinder 13 into the guide cylinder 32 increases the contact area between the two, improving the stability of the core tube assembly 1 and the receiving assembly 3 after connection. Both the first connecting plate 123 and the second connecting plate 321 are provided with multiple connecting holes. When the two are aligned, their connecting holes are also aligned one by one. At this time, fasteners can be used to pass through the connecting holes on the two in sequence to achieve a stable connection between the core tube assembly 1 and the receiving assembly 3. The fasteners can be a combination of bolts and nuts or pins.

[0069] See Figure 5 The guide slide 31 includes two arc-shaped plates 311 spaced apart, with a base plate connecting the two arc-shaped plates 311. The base plate and the arc-shaped plates 311 at both ends form the guide slide 31, which can limit the falling rock core and prevent it from rolling out of the guide slide 31.

[0070] Optionally, see Figure 5 The receiving component 3 is provided with a stop mechanism 33, which can stop at the outlet of the guide cylinder 32 to stop the rock core from falling too much when the surface of the rock core is too smooth and suddenly slides down.

[0071] For details, please refer to [link / reference]. Figure 5 The stopping mechanism 33 includes a baffle 331 and an operating handle 332. Two ear plates 312 are spaced apart and protrude from the guide slide 31. Specifically, the two ear plates 312 protrude from the side of the two arc-shaped plates 311 opposite to the bottom plate. The baffle 331 is rotatably connected to the end of the ear plate 312 away from the arc-shaped plate 311. The operating handle 332 is connected to the baffle 331, and the two are an integral structure. The operating handle 332 is used to drive the baffle 331 to rotate, so that the baffle 331 stops at the outlet of the guide cylinder 32, thereby preventing the core from continuing to fall.

[0072] See Figure 5Each of the two arc-shaped plates 311 has a pressure-bearing member 333 on its opposite side. The pressure-bearing member 333 has multiple first teeth spaced apart, meaning it is a rack and pinion structure. The operating handle 332 includes a connected pressing part 3321 and a force-transmitting arm 3322. The pressing part 3321 is rotatably connected to the baffle 331 via the force-transmitting arm 3322. The force-transmitting arm 3322 has multiple second teeth spaced apart, which can engage with the first teeth. The force-transmitting arm 3322 is an elastically deformable structure.

[0073] When the pressing part 3321 is not pressed down, the position of the baffle 331 is as follows: Figure 5 As shown, there is a certain gap between the lower end of the baffle 331 and the guide slide 31 to allow the rock core to slide smoothly. At this time, because the second tooth on the force transmission arm 3322 engages with the first tooth on the pressure bearing member 333, the entire operating handle 332 will not move relative to the pressure bearing member 333. That is, the engagement between the second tooth on the force transmission arm 3322 and the first tooth on the pressure bearing member 333 provides a certain constraint force to the baffle 331, preventing the baffle 331 from rotating arbitrarily. In other words, to drive the baffle 331 to rotate and stop the rock core from sliding, a sufficiently large force needs to be applied.

[0074] When the pressing part 3321 is pressed down, it drives the transmission arm 3322 to rotate downwards. During this process, the transmission arm 3322 undergoes a certain elastic deformation, causing the second tooth to gradually disengage from its engagement with the first tooth, and then engage with the next first tooth. That is, during the pressing of the pressing part 3321, the second tooth on the transmission arm 3322 engages sequentially with the first tooth on the pressure bearing member 333 until the baffle 331 rotates to the outlet position of the guide cylinder 32. At this point, the pressing of the pressing part 3321 can be stopped. Since there is also an engagement between the transmission arm 3322 and the pressure bearing member 333 at this time, there is a certain constraint on the baffle 331, so that the baffle 331 can be stably positioned at the outlet of the guide cylinder 32, effectively preventing excessive slippage of the rock core.

[0075] See Figure 5 The receiving component 3 also includes a base 34, on which a guide slide 31 is disposed. A supporting rib 35 is provided between the guide slide 31 and the top surface of the base 34 to support the guide slide 31 and prevent it from being suspended relative to the base 34. This prevents the guide slide 31 from deforming or collapsing due to the impact of the rock core.

[0076] Further reading Figure 5The base 34 has multiple wheels 36 spaced apart on its bottom surface to facilitate the transfer of the entire receiving assembly 3 to a designated position, which is convenient and labor-saving. Preferably, at least one of the multiple wheels 36 is a wheel 36 with a braking mechanism. When the receiving assembly 3 moves to the designated position, the braking mechanism can lock the wheel 36 to prevent the entire receiving assembly 3 from slipping.

[0077] For example, in this embodiment, the base 34 is a rectangular base with a wheel 36 at each of its four corners. The two front wheels 36 are equipped with braking mechanisms to ensure the safety of the supporting component 3.

[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drop bottom device characterized by, The utility model relates to a coring device, including: A core barrel assembly (1) comprising a locking sleeve (11) and a core barrel body (12) connected in communication, the locking sleeve (11) is configured to clamp the inner barrel of the core barrel, and the inner barrel is provided with a core; A driving roller (2) rotatably arranged on the core barrel body (12) and capable of rolling contact with the core to move the core out of the inner barrel; A receiving assembly (3) comprising a guide chute (31), the guide chute (31) is arc-shaped, one end of the guide chute (31) is opposite to the end of the core barrel body (12) away from the locking sleeve (11), and the other end extends to a core collection area; A first driving member (4) arranged outside the core barrel body (12), the output end of the first driving member (4) is in transmission connection with the driving roller (2), and the barrel wall of the core barrel body (12) is provided with a notch (121), and the driving roller (2) can pass through the notch (121) to roll with the core; A plurality of auxiliary rollers (5) rotatably arranged on the core barrel body (12), the barrel wall of the core barrel body (12) is provided with the notch (121) opposite to each auxiliary roller (5), and the auxiliary roller (5) can pass through the corresponding notch (121) to roll with the core; The driving roller (2) and the auxiliary roller (5) are connected with a second driving member (61), and the second driving member (61) is used for driving the driving roller (2) and the auxiliary roller (5) to be close to or away from the core; A transmission bracket (62), the output end of the second driving member (61) is in transmission connection with a first rotating shaft (63), the driving roller (2) and the auxiliary roller (5) are coaxially connected with a second rotating shaft (64), the second rotating shaft (64) is parallel to the first rotating shaft (63) and connected with the first rotating shaft (63) through the transmission bracket (62), and the second driving member (61) drives the first rotating shaft (63) to rotate to drive the driving roller (2) or the auxiliary roller (5) to be close to or away from the core; The receiving assembly (3) further comprises a guide barrel body (32), the end of the core barrel body (12) away from the locking sleeve (11) is provided with a connecting barrel body (13), a first connecting plate (123) is arranged on the core barrel body (12) in a ring shape, a second connecting plate (321) is arranged on the guide barrel body (32) in a ring shape, the connecting barrel body (13) is inserted into the guide barrel body (32), the first connecting plate (123) and the second connecting plate (321) are opposite and connected, and the guide chute (31) is connected to the end of the guide barrel body (32) away from the core barrel body (12). The receiving assembly (3) is provided with a stop mechanism (33), the stop mechanism (33) comprises a baffle (331) and an operating handle (332), two lug plates (312) are spaced apart and protrude on the guide slide (31), the baffle (331) is rotatably connected to one end of the lug plate (312) away from the guide slide (31), and the operating handle (332) is used to drive the baffle (331) to rotate to block the core from falling.

2. The outlet core device of claim 1, wherein, Further comprising a friction piece (71), which can pass through the gap (121) and be in sliding contact with the core.

3. The outlet core device of claim 2, wherein, Further comprising a hydraulic pump (731), an oil conveying pipeline (72) is arranged outside the core barrel (12) in a spaced apart manner, the oil conveying pipeline (72) is telescopically provided with the friction piece (71) at a position opposite to each gap (121), and the hydraulic pump (731) can pump oil into the oil conveying pipeline (72) to drive the friction piece (71) to approach the core.

4. The outfeed device according to any one of claims 1-3, characterized in that An operating port (122) is arranged on the barrel wall of the core barrel (12), and a cutting tool can pass through the operating port (122) to cut the core in the core barrel (12).

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