A rotary cutting device suitable for deep-sea columnar core

Abstract

The application discloses a rotary cutting device suitable for deep-sea columnar cores and relates to the technical field of deep-sea core processing equipment, which comprises a clamping and rotating mechanism and a cutting mechanism. The clamping and rotating mechanism is used for clamping and rotating at a constant speed the deep-sea columnar core provided with a peripheral core liner and arranged in the clamping and rotating mechanism. The cutting mechanism is used for cutting the deep-sea columnar core, and the cutting is divided into two steps, that is, the peripheral core liner is first cut in the first step, and the deep-sea columnar core is cut in the second step. The device can realize on-site segmented cutting of the deep-sea columnar core, and can ensure that the core is still in a stable high-pressure and low-temperature environment during the cutting process, thereby reducing the decomposition of the combustible ice. The segmented cutting makes the core sample more convenient for pressure-maintaining storage and transportation, and can provide pressure-maintaining core samples with different lengths for various types of analysis instruments and testing equipment, so that the testing and analysis data are more accurate, and important basis is provided for the recoverability evaluation of the combustible ice reservoir.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea core processing equipment, and in particular to a rotary cutting device suitable for deep-sea columnar cores. Background Art

[0002] Methane hydrate has the characteristics of wide distribution, large resource volume, high energy density, cleanness and environmental protection. The total amount of organic carbon it contains is about twice that of existing fossil energy, making it a strategic commanding height for future global energy development. As a national energy strategic priority, the industrialization of methane hydrate is of great significance to ensuring national energy resource security and improving the energy structure. Understanding the evolution characteristics of the basic physical properties of methane hydrate reservoirs is of great significance to improving the comprehensive capabilities of methane hydrate resource exploration and trial production. However, simulation experiments and tests of the basic physical properties of methane hydrate reservoirs are still mainly based on artificially prepared methane hydrate core samples, resulting in a certain gap between the test results and simulation experiment understanding and the needs of methane hydrate exploration and trial production projects. More accurate quasi-in-situ physical property test data are needed for comparison and correction.

[0003] Therefore, it is particularly important to provide a rotary cutting device suitable for deep-sea columnar cores, which can be used to cut long columnar cores containing combustible ice into sections under an in-situ environment (high pressure and low temperature) to provide high-quality core samples for further testing and analysis in the laboratory. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary cutting device suitable for deep-sea columnar cores to solve the problems existing in the above-mentioned prior art. It can realize rotary cutting of columnar cores, make them more convenient for pressure-maintaining storage and transportation, and provide core samples of different lengths.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a rotary cutting device suitable for deep-sea columnar rock cores, comprising a clamping and rotating mechanism and a cutting mechanism; the clamping and rotating mechanism comprises a clamping and rotating chamber, a first rotator, a second rotator and a clamp; the clamping and rotating chamber has a through cavity; the first rotator comprises a first driver, a first worm and a first core shaft; the second rotator comprises a second driver, a second worm and a second core shaft; the clamp comprises a plurality of sliding clamps; the first core shaft and the second core shaft are both rotatably arranged in the through cavity, and the first core shaft and the second core shaft are coaxially arranged relative to each other, a first through hole is formed on the first core shaft, and a second through hole connected to the first through hole is formed on the second core shaft; the first worm is rotatably arranged in the through cavity, the first core shaft has a first worm wheel for meshing with the first worm, the first driver is used to drive the first worm to rotate; the second worm is rotatably arranged in the through cavity, the second core shaft has a second worm wheel for meshing with the second worm, and the second driver is used to drive the second worm to rotate; the A spiral guide groove is provided on the end face of a core shaft near one end of the second core shaft, one end of the spiral guide groove is close to the axis of the first core shaft, and the other end thereof is away from the axis of the first core shaft; a plurality of sliding grooves are provided on the end of the second core shaft near the first core shaft, and each sliding clamp is respectively arranged in one of the sliding grooves for sliding along the radial direction of the second core shaft; each sliding clamp is provided with two sliding columns that are kept in the spiral guide groove; the rotation of the first core shaft can drive each sliding clamp in the corresponding sliding groove to approach or move away from the axis of the second core shaft through the spiral guide groove; the cutting mechanism is fixedly provided on one end of the clamping rotating mechanism having the first core shaft; the cutting mechanism has a penetrating cutting channel and a connecting channel connected to the cutting channel, and the cutting channel is connected to the second through hole; a cutting unit is provided in the connecting channel, and the cutting unit has a first cutting part for cutting the outer core liner of the deep-sea columnar core and a second cutting part for cutting the deep-sea columnar core; a high-pressure and low-temperature environment is maintained in the through cavity and the cutting channel.

[0007] Preferably, the cutting mechanism comprises a cutting cabin, a first end cover assembly, a second end cover assembly and the cutting unit; the cutting unit comprises a driving rod, a moving knife holder and a connecting rod; the cutting cabin is provided with the cutting channel and the communication channel, the axis of the cutting channel is perpendicular to the axis of the communication channel; the first end cover assembly and the second end cover assembly are respectively fixedly arranged at the two ends of the communication channel; the moving knife holder is slidingly arranged in the communication channel along the axis of the communication channel; the driving rod is arranged on the first end cover assembly, and one end of the driving rod is connected with the moving knife holder; the connecting rod is slidingly arranged in the sliding hole of the second end cover assembly along the axis of the communication channel; two circular blades are fixedly arranged on the inner side wall of the moving knife holder along the axis direction of the communication channel; and a large blade is fixedly arranged on the moving knife holder opposite to the two circular blades; the two circular blades form the first cutting part, and the large blade forms the second cutting part.

[0008] Preferably, the first mandrel comprises a first inner circular sleeve, a spiral groove disc and the first worm gear; the second mandrel comprises a second inner circular sleeve, a clamp mounting disc and a second worm gear; the annular convex ring is fixedly arranged in the through cavity; the first mandrel and the second mandrel are located on the same side of the annular convex ring, and the second mandrel is located at one end of the first mandrel away from the annular convex ring; one end of the first inner circular sleeve is fixedly connected with the annular convex ring; one end of the spiral groove disc is fixedly connected with one end of the first worm gear, and the spiral groove disc is rotationally arranged in the first inner circular sleeve along the axis of the through cavity; the first worm gear and the spiral groove disc are provided with the first through hole in the middle part thereof; the end face of one end of the spiral groove disc away from the annular convex ring is provided with the spiral guide groove, one end of the spiral guide groove is close to the center of the end face of the spiral groove disc, and the other end of the spiral guide groove is away from the center of the end face of the spiral groove disc; one end of the second inner circular sleeve is fixedly connected with one end of the first inner circular sleeve away from the annular convex ring; one end of the clamp mounting disc is fixedly connected with one end of the second worm gear, and the clamp mounting disc is rotationally arranged in the second inner circular sleeve along the axis of the through cavity; the clamp mounting disc and the second worm gear are provided with the second through hole in the middle part thereof; the end face of one end of the clamp mounting disc close to the first inner circular sleeve is provided with the sliding groove, the sliding groove is distributed in the circumferential direction along the axis of the through cavity, the sliding clamp block is slidingly arranged in the corresponding sliding groove along the radial direction of the through cavity, and the sliding column of the sliding clamp block in the sliding groove is located in the spiral guide groove.

[0009] Preferably, shaft sleeves are fixedly provided on the inner sides of the first inner sleeve and the second inner sleeve, the spiral groove disk is rotatably connected in the corresponding shaft sleeve, and the clamp mounting disk is rotatably connected in the corresponding shaft sleeve.

[0010] Preferably, two opposite guiding ridges are provided in the sliding groove, and two opposite side walls of the sliding clamp are provided with guiding sliding grooves corresponding to the guiding ridges.

[0011] Preferably, the first drive includes a first motor, a first coupling and a first motor fixing bracket; the second drive includes a second motor, a second coupling and a second motor fixing bracket; the clamping rotating cabin is provided with a first worm through-hole and a second worm through-hole which are connected to the through-cavity; the first motor is fixedly arranged on the clamping rotating cabin through the first motor fixing bracket, and the second motor is fixedly arranged on the clamping rotating cabin through the second motor fixing bracket; the first worm is rotatably arranged in the first worm through-hole, one end of the first worm is fixedly connected to the output shaft of the first motor through the first coupling, and the other end of the first worm is rotatably arranged on the clamping rotating cabin through the first sealing assembly; the second worm is rotatably arranged in the second worm through-hole, one end of the second worm is fixedly connected to the output shaft of the second motor through the second coupling, and the other end of the second worm is rotatably arranged on the clamping rotating cabin through the second sealing assembly.

[0012] Preferably, a clamping end cover is fixedly provided at one end of the clamping rotating chamber away from the cutting mechanism; one end of the clamping end cover is located in the through cavity and abuts against the end of the annular convex ring away from the first inner sleeve; and an extension tube is fixedly provided at one end of the clamping end cover close to the first worm gear, and the extension tube is docked with the first worm gear; the clamping end cover has a guide channel, and one end of the guide channel is used to communicate with one end of the first through hole close to the first worm gear.

[0013] Preferably, a plurality of slots are provided at one end of the first inner sleeve close to the second inner sleeve, and a plurality of plug-in blocks are fixedly provided at one end of the second inner sleeve close to the first inner sleeve; each plug-in block is plugged and fixed in the corresponding slot along the axial direction of the through-cavity; a clamping ring is fixedly provided on the side of the second inner sleeve away from the first inner sleeve; a docking tube is provided at one end of the cutting mechanism, and after the cutting mechanism is fixedly connected to the clamping and rotating mechanism, the docking tube is located in the through-cavity and is crimped on the end of the clamping ring away from the second inner sleeve.

[0014] Preferably, the two end openings of the communicating channel on the cutting cabin body are respectively sealed and fixedly provided with a first cutter end cover and a second cutter end cover; the first end cover assembly includes an active screw rod, a handle, a transition block, a pressure block and a first screw rod seat; the pressure block is fixedly arranged on the first screw rod seat, and the first screw rod seat is fixedly arranged on the first cutter end cover; one end of the active screw rod slides along its own axis and passes through the pressure block, the first screw rod seat and the through-channel on the first cutter end cover in sequence and is fixedly connected to the movable knife holder; the transition block is rotatable around the axis of the active screw rod and is arranged in the inner cavity of the pressure block, the transition block is threadedly connected to the active screw rod, and the handle is fixedly connected to the transition block; the second end cover assembly includes a second screw rod seat and a connecting rod; the second screw rod seat is fixedly arranged on the second cutter end cover, the connecting rod slides along its own axis and passes through the through-channel of the second screw rod seat and the second cutter end cover, and one end of the connecting rod is fixedly connected to the movable knife holder.

[0015] Preferably, a counter is provided on the handle.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The rotary cutting device for deep-sea columnar cores provided by the present invention can cooperate with the moving mechanism to realize on-site segmented cutting of deep-sea columnar cores through the provided clamping and rotating mechanism and cutting mechanism as well as the high-pressure and low-temperature environment maintained internally, and ensure that the core remains in a stable high-pressure and low-temperature environment during the cutting process, thereby reducing the decomposition of combustible ice; segmented cutting makes the core samples more convenient for pressure-maintaining storage and transportation, and can provide pressure-maintaining core samples of different lengths for various types of analytical instruments and test equipment, making the test analysis data more accurate, and providing an important basis for the evaluation of the recoverability of combustible ice reservoirs; the cooperation structure of the worm and the worm gear is adopted to realize the driving of the first core shaft and the second core shaft respectively rotate, and the spiral guide groove on the end face of the first core shaft and the multiple sliding clamps arranged at the corresponding positions of the second core shaft can cooperate with each other. Under the rotation of the first core shaft, each sliding clamp is guided and linked by the spiral guide groove and the sliding column to move in the corresponding sliding groove toward the direction of the axis passing through the cavity, thereby realizing the gradual clamping of the internal penetrating object. After it is clamped, it cooperates with the linkage of the first driver and the second driver to realize the rotation of the internal penetrating object after clamping. The first cutting part in the cutting mechanism first cuts the outer core liner of the deep-sea columnar core, and then the second cutting part performs segmented cutting operation on the deep-sea columnar core. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A front view of the overall structure of the rotary cutting device for deep-sea columnar rock cores provided by the present invention;

[0020] Figure 2 A three-dimensional view of a rotary cutting device for deep-sea columnar cores provided by the present invention;

[0021] Figure 3 A schematic cross-sectional view of a rotary cutting device for deep-sea columnar cores provided by the present invention;

[0022] Figure 4 A top view of the rotary cutting device for deep-sea columnar cores provided by the present invention;

[0023] Figure 5 A schematic cross-sectional view of the clamping and rotating mechanism of the rotary cutting device for deep-sea cylindrical cores provided by the present invention;

[0024] Figure 6 An exploded view of the structure of the internal components of the rotary cutting device for deep-sea cylindrical cores provided by the present invention from a first perspective;

[0025] Figure 7 An exploded view of the structure of the internal components of the rotary cutting device for deep-sea cylindrical cores provided by the present invention at a second viewing angle;

[0026] Figure 8 A schematic cross-sectional structure diagram of the cutting mechanism in the rotary cutting device for deep-sea columnar cores provided by the present invention.

[0027] In the picture:

[0028] 10-Clamping and rotating mechanism;

[0029] 11-clamping the rotating cabin; 111-annular convex ring;

[0030] 12-first rotator; 121-first motor; 122-first motor mounting bracket; 123-first worm; 124-first worm gear; 125-spiral groove disk; 1251-spiral guide groove; 126-shaft sleeve; 127-first inner sleeve; 1271-slot;

[0031] 13-Second rotary device; 131-Second motor; 132-Second motor fixing frame; 133-Second worm; 134-Second worm wheel; 135-Clamp mounting disc; 1351-Sliding groove; 1352-Guide convex rib; 136-Second inner circular sleeve; 1361-Plug-in block; 137-Compression ring;

[0032] 14-Sliding clamp block; 141-Sliding column;

[0033] 15-Sealing gland; 151-Pin hole sleeve;

[0034] 20-Cutting mechanism;

[0035] 21-Cutting cabin body; 211-Cutting channel; 212-Communication channel;

[0036] 22-First cutter end cover;

[0037] 23-Second cutter end cover;

[0038] 24-First end cover assembly; 241-Driving screw; 242-Handle; 243-Transition block; 244-Compression block; 245-First screw seat; 246-Counter;

[0039] 25-Second end cover assembly; 251-Second screw seat; 252-Connecting rod;

[0040] 26-Copper sleeve; 261-Moving tool rest; 262-Circular blade; 263-Large blade;

[0041] 30-Clamping end cover; 31-Extension pipe; 32-Guide channel. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0043] The present application aims to provide a rotary cutting device suitable for deep-sea columnar cores, to solve the problems in the prior art, to enable rotary cutting of columnar cores, to make them more convenient for pressure-maintaining storage and transportation, and to provide core samples of different lengths.

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0045] Embodiment one

[0046] This embodiment provides a rotary cutting device suitable for deep-sea columnar cores, such as Figures 1-8 As shown, it includes a clamping and rotating mechanism 10 and a cutting mechanism 20;

[0047] The clamping rotation mechanism 10 includes a clamping rotation cabin 11, a first rotator 12, a second rotator 13 and a clamp; the clamping rotation cabin 11 has a through cavity; the first rotator 12 includes a first drive, a first worm 123 and a first core shaft; the second rotator 13 includes a second drive, a second worm 133 and a second core shaft; the clamp includes a plurality of sliding clamps 14; the first core shaft and the second core shaft are both rotatably arranged in the through cavity, and the first core shaft and the second core shaft are coaxially arranged relative to each other, a first through hole is provided on the first core shaft, and a second through hole connected to the first through hole is provided on the second core shaft; the first worm 123 is rotatably arranged in the through cavity, the first core shaft has a first worm wheel 124 for meshing with the first worm 123, and the first drive is used to drive the first worm 123 to rotate; the second worm 133 is rotatably arranged in the through cavity, and the second core shaft has a first through hole for meshing with the second The second worm gear 134 is meshed with the worm 133, and the second driver is used to drive the second worm 133 to rotate; a spiral guide groove 1251 is provided on the end surface of the first core shaft close to the second core shaft, one end of the spiral guide groove 1251 is close to the axis of the first core shaft, and its other end is away from the axis of the first core shaft; a plurality of sliding grooves 1351 are provided on the end of the second core shaft close to the first core shaft, and each sliding clamp 14 is respectively slidably arranged in a sliding groove 1351 along the radial direction of the second core shaft; each sliding clamp 14 is provided with two sliding clamps 141 that are retained in the spiral guide groove 1251 (providing two sliding clamps 141 can ensure the strength of each sliding clamp 14, so that it can clamp and fix the clamped object more stably); the rotation of the first core shaft can drive each sliding clamp 14 to approach or move away from the axis of the second core shaft in the corresponding sliding groove 1351 through the spiral guide groove 1251;

[0048] The cutting mechanism 20 is fixedly mounted on one end of the clamping and rotating mechanism 10 having the first core shaft. The cutting mechanism 20 has a through-cutting channel 211 and a connecting channel 212 communicating with the cutting channel 211. The cutting channel 211 is communicated with the second through-hole. A cutting unit is disposed within the connecting channel 212. The cutting unit has a first cutting portion for cutting a peripheral core liner of a deep-sea cylindrical core and a second cutting portion for cutting the deep-sea cylindrical core (the deep-sea cylindrical core having the peripheral core liner is disposed within the through-cutting cavity and the cutting channel 211. Therefore, the peripheral core liner is cut first, and then the deep-sea cylindrical core is cut).

[0049] A high-pressure and low-temperature environment is maintained in the through-hole cavity and the cutting channel 211 (the high-pressure and low-temperature environment is achieved by filling the through-hole cavity and the cutting channel 211 with seawater).

[0050] Through the provided clamping and rotating mechanism 10 and the cutting mechanism 20 and the high-pressure and low-temperature environment maintained inside, it can cooperate with the moving mechanism to realize on-site segmented cutting of deep-sea columnar cores, and ensure that the cores are still in a stable high-pressure and low-temperature environment during the cutting process, thereby reducing the decomposition of combustible ice; segmented cutting makes core samples more convenient for pressure-maintaining storage and transportation, and can provide pressure-maintaining core samples of different lengths for various types of analytical instruments and test equipment, making the test and analysis data more accurate, and providing an important basis for the evaluation of the recoverability of combustible ice reservoirs; the matching structure of the worm and the worm gear is adopted to realize the rotation of the first core shaft and the second core shaft, and the end face of the first core shaft is provided with a plurality of pressure-maintaining core samples. The spiral guide groove 1251 and the multiple sliding clamps 14 arranged at the corresponding positions of the second core shaft can cooperate with each other. When the first core shaft rotates, each sliding clamp 14 is guided and linked by the spiral guide groove 1251 and the sliding clamp 141 to move in the corresponding sliding groove 1351 toward the direction close to the axis passing through the cavity, thereby gradually clamping the internal penetrating object. After it is clamped, it cooperates with the linkage of the first driver and the second driver to drive the internal penetrating object to rotate after clamping. The first cutting part in the cutting mechanism 20 first cuts the outer core liner of the deep-sea columnar core, and then the second cutting part performs segmented cutting operations on the deep-sea columnar core.

[0051] Among them, the relevant setting description of the clamping and rotating mechanism 10 is as follows:

[0052] The specific composition of the first and second core shafts:

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 3 and Figures 5-7As shown, the first mandrel includes a first inner sleeve 127, a spiral groove disk 125 and a first worm gear 124; the second mandrel includes a second inner sleeve 136, a fixture mounting disk 135 and a second worm gear 134; an annular convex ring 111 is fixedly arranged in the cavity; the first mandrel and the second mandrel are both located on the same side of the annular convex ring 111, and the second mandrel is located at the end of the first mandrel away from the annular convex ring 111; one end of the first inner sleeve 127 is fixedly connected to the annular convex ring 111 (the end of the annular convex ring 111 close to the first inner sleeve 127 and the first inner sleeve 1 27 is provided with a plurality of fixing pin holes at one end close to the annular convex ring 111, and a fixing connecting pin is passed through each set of corresponding fixing pin holes); one end of the spiral grooved disk 125 is fixedly connected to one end of the first worm gear 124, and the spiral grooved disk 125 is rotatably arranged in the first inner sleeve 127 around the axis passing through the cavity; a first through hole is provided in the middle of the spiral grooved disk 125 and the first worm gear 124; a spiral guide groove 1251 is provided on the end surface of the spiral grooved disk 125 away from the annular convex ring 111, and one end of the spiral guide groove 1251 is close to the first inner sleeve 127; The center of the end face of the spiral groove disk 125, and the other end of the spiral guide groove 1251 is away from the center of the end face of the spiral groove disk 125 (the groove depth of the spiral guide groove 1251 at each position on the end face of the spiral groove disk 125 is the same, and the two sliding clamps 141 on the sliding clamp 14 are respectively located in the spiral guide groove 1251 at different radial positions); one end of the second inner sleeve 136 is fixedly connected to the end of the first inner sleeve 127 away from the annular convex ring 111; one end of the clamp mounting plate 135 is fixedly connected to one end of the second worm gear 134, and the clamp mounting plate 1 35 is arranged in the second inner sleeve 136 for rotation around the axis passing through the cavity; a second through hole is provided in the middle of the entire clamp mounting plate 135 and the second worm gear 134; sliding grooves 1351 are provided on the end surface of one end of the clamp mounting plate 135 close to the first inner sleeve 127, and the sliding grooves 1351 are circumferentially distributed around the axis passing through the cavity, and the sliding clamps 14 are set in the corresponding sliding grooves 1351 for radial sliding along the passing cavity, and the sliding clamps 14 in the sliding grooves 1351 are all located in the spiral guide grooves 1251.

[0054] Among the optional solutions of this embodiment, it is more preferred that Figure 3 and Figures 5-7 As shown, the inner sides of the first inner sleeve 127 and the second inner sleeve 136 are fixedly penetrated with shaft sleeves 126 , the spiral groove disc 125 is rotatably connected in the corresponding shaft sleeve 126 , and the fixture mounting disc 135 is rotatably connected in the corresponding shaft sleeve 126 .

[0055] Among the optional solutions of this embodiment, it is more preferred that Figure 7As shown, the sliding groove 1351 is provided with two opposite guide ribs 1352, and the two opposite side walls of the sliding clamp block 14 are each provided with a guide sliding groove corresponding to the guide rib 1352.

[0056] In the optional solution of the embodiment, preferably, as shown in Figure 6 and Figure 7 As shown, the first inner sleeve 127 is provided with a plurality of insertion grooves 1271 at one end close to the second inner sleeve 136, and the second inner sleeve 136 is fixedly provided with a plurality of insertion blocks 1361 at one end close to the first inner sleeve 127; each insertion block 1361 is inserted and fixed in the corresponding insertion groove 1271 along the axis direction of the through cavity; the second inner sleeve 136 is fixedly provided with a compression ring 137 at a side away from the first inner sleeve 127; one end of the cutting mechanism 20 is provided with a butt joint pipe, and after the cutting mechanism 20 is fixedly connected with the clamping and rotating mechanism 10, the butt joint pipe is located in the through cavity and is compressed and connected at one end of the compression ring 137 away from the second inner sleeve 136.

[0057] Specifically, the fixed connection manner of the first worm gear 124 and the spiral groove disc 125 is the same as the fixed connection manner of the second worm gear 134 and the clamp mounting disc 135; the first worm gear 124 is fixedly connected on the spiral groove disc 125 through the connection flange disc provided at one end and a plurality of bolts (the spiral groove disc 125 is provided with threaded holes corresponding to the bolt positions).

[0058] Specifically, one end of the first inner sleeve 127 away from the second inner sleeve 136 and one end of the second inner sleeve 136 away from the first inner sleeve 127 are each provided with a limiting inner convex ring limiting the end of the corresponding shaft sleeve pipe 126.

[0059] For the setting of the first driver and the second driver:

[0060] In the optional solution of the embodiment, preferably, as shown in Figures 1-7As shown, the first driver includes a first motor 121, a first coupling and a first motor fixing frame 122; the second driver includes a second motor 131, a second coupling and a second motor fixing frame 132; the clamping rotating cabin 11 is provided with a first worm 123 through hole and a second worm 133 through hole which are communicated with the through cavity; the first motor 121 is fixedly arranged on the clamping rotating cabin 11 through the first motor fixing frame 122 (the first motor 121 is fixed on the first motor fixing frame 122, and the first motor fixing frame 122 is fixed on the clamping rotating cabin 11 through bolts), and the second motor 131 is fixedly arranged on the clamping rotating cabin 11 through the second motor fixing frame 132; the first worm 123 is rotatably arranged in the first worm 123 through hole, one end of the first worm 123 is fixedly connected with the output shaft of the first motor 121 through the first coupling, and the other end of the first worm 123 is rotatably arranged on the clamping rotating cabin 11 through the first sealing assembly; the second worm 133 is rotatably arranged in the second worm 133 through hole, one end of the second worm 133 is fixedly connected with the output shaft of the second motor 131 through the second coupling, and the other end of the second worm 133 is rotatably arranged on the clamping rotating cabin 11 through the second sealing assembly.

[0061] Specifically, the first sealing assembly and the second sealing assembly are the same in structure, and the first sealing assembly is taken as an example for specific description: the first sealing assembly includes a bearing copper sleeve, a gasket copper sleeve, a sealing gland 15 and a pin hole sleeve 151; the bearing copper sleeve and the gasket copper sleeve are sleeved on the end of the first worm 123, the bearing copper sleeve is fixedly arranged at one end of the gasket copper sleeve close to the first through hole, and the bearing copper sleeve and the gasket copper sleeve are located in the first worm 123 through hole; the sealing gland 15 is fixedly arranged on the clamping rotating cabin 11 at the end of the first worm 123 through hole; the first worm 123 is fixedly connected with the pin hole sleeve 151 through the open pin after passing through the bearing copper sleeve, the gasket copper sleeve and the sealing gland 15 in sequence; a thrust washer is further arranged between the gasket copper sleeve and the pin hole sleeve 151, the corresponding end of the thrust washer and the gasket copper sleeve are located in the sealing gland 15; and the pin hole sleeve 151 is located outside the sealing gland 15.

[0062] For other settings on the clamping rotating cabin 11, it is explained as follows:

[0063] In the optional scheme of the embodiment, it is more preferred that Figures 1-5As shown, a clamping end cover 30 is also fixedly provided at one end of the clamping rotating chamber 11 away from the cutting mechanism 20 (the clamping end cover 30 is fixed to the clamping rotating chamber 11 by bolts); one end of the clamping end cover 30 is located in the through cavity and abuts against the end of the annular convex ring 111 away from the first inner sleeve 127; and an extension tube 31 is fixedly provided at one end of the clamping end cover 30 close to the first worm gear 124, and the extension tube 31 is docked with the first worm gear 124; the clamping end cover 30 has a guide channel 32, and one end of the guide channel 32 is used to communicate with one end of the first through hole close to the first worm gear 124.

[0064] Specifically, the end of the clamping end cover 30 away from the clamping rotating chamber 11 is used to dock with the mobile positioning device, and the deep-sea columnar core with the outer core liner is extended into the clamping rotating mechanism 10 and the cutting mechanism 20 through the mobile positioning device; the clamping end cover 30 can seal the corresponding end of the clamping rotating chamber 11 at other docking positions except the guide channel 32.

[0065] Among them, the relevant setting description of the cutting mechanism 20 is as follows:

[0066] Among the optional solutions of this embodiment, it is more preferred that Figures 1-4 and Figure 8 As shown, the cutting mechanism 20 includes a cutting cabin 21, a first end cover assembly 24, a second end cover assembly 25 and a cutting unit; the cutting unit includes a driving rod, a movable blade holder 261 and a connecting rod 252; the cutting cabin 21 has a cutting channel 211 and a connecting channel 212, and the axis of the cutting channel 211 is perpendicular to the axis of the connecting channel 212; the first end cover assembly 24 and the second end cover assembly 25 are respectively fixedly arranged at both ends of the connecting channel 212; the movable blade holder 261 is slidably arranged in the connecting channel 212 along the axis of the connecting channel 212; the driving rod is arranged on the first end cover assembly 24, and one end of the driving rod is connected to the movable blade holder 261 connection; the connecting rod 252 is slidably arranged in the sliding hole of the second end cover assembly 25 along the axis of the connecting channel 212; two circular blades 262 are fixedly arranged on the inner side wall of the movable tool holder 261 that slides along the axial direction of the connecting channel 212; and a large blade 263 is fixedly arranged on the movable tool holder 261 opposite to the two circular blades 262; the two circular blades 262 form a first cutting part, and the large blade 263 forms a second cutting part (the two circular blades 262 cooperate with the rotational movement of the clamping rotation mechanism 10 to cut the outer core liner, and then the large blade 263 is moved to cut the inner layer of the deep-sea columnar core at that position).

[0067] Among the optional solutions of this embodiment, it is more preferred that Figure 8As shown, the openings at both ends of the communicating channel 212 on the cutting cabin body 21 are sealed and fixedly provided with a first cutter end cover 22 and a second cutter end cover 23; the first end cover assembly 24 includes an active screw rod 241, a handle 242, a transition block 243, a pressure block 244 and a first screw rod seat 245; the pressure block 244 is fixedly provided on the first screw rod seat 245, and the first screw rod seat 245 is fixedly provided on the first cutter end cover 22; one end of the active screw rod 241 slides along its own axis in sequence through the passage provided on the pressure block 244, the first screw rod seat 245 and the first cutter end cover 22 The transition block 243 is rotated around the axis of the active screw rod 241 and is arranged in the inner cavity of the pressure block 244. The transition block 243 is threadedly connected to the active screw rod 241, and the handle 242 is fixedly connected to the transition block 243. The second end cover assembly 25 includes a second screw rod seat 251 and a connecting rod 252. The second screw rod seat 251 is fixedly set on the second cutter end cover 23, and the connecting rod 252 slides along its own axis and passes through the through channel of the second screw rod seat 251 and the second cutter end cover 23, and one end of the connecting rod 252 is fixedly connected to the movable tool holder 261.

[0068] Specifically, a copper sleeve 26 is fixedly inserted into the communication channel 212 , a guide slot is provided in the copper sleeve 26 , and the movable tool holder 261 is slidably provided in the guide slot.

[0069] Among the optional solutions of this embodiment, it is more preferred that Figure 1 、 Figure 2 、 Figure 4 and Figure 8 As shown, a counter 246 is provided on the handle 242 .

[0070] Among them, the working process is described as follows:

[0071] Before starting work, rotate the handle 242 to the data displayed by the counter 246 is zero, so that the moving knife holder 261 is located in the initial position. The deep sea columnar core with peripheral core liner is pushed into the clamping rotary mechanism 10 and the cutting mechanism 20 by the moving positioning device, the first motor 121 is started, the first motor 121 drives the first worm 123 to rotate through the first shaft coupling, thereby driving the first worm wheel 124 to rotate, the spiral groove disc 125 fixedly connected with the first worm wheel 124 starts to rotate, based on the cooperation of the spiral guide groove 1251 and the sliding clamp block 141, each sliding clamp block 14 is driven to move towards the axis of the spiral groove disc 125, thereby clamping the deep sea columnar core with peripheral core liner (each sliding clamp block 14 is distributed in the circumferential direction along the axis of the spiral groove disc 125, and the end of each sliding clamp block 14 for clamping is provided with anti-skid lines); when it is clamped, the second motor 131 is started, at this time, the second motor 131 drives the clamp mounting disc 135 to realize synchronous rotary motion with the spiral groove disc 125 driven by the first motor 121 through the first worm 123 and the first worm wheel 124, that is, the deep sea columnar core with peripheral core liner is driven to rotate. When it rotates, slowly rotate the handle 242 to drive the driving screw 241 to move away from the cutting cabin body 21, at this time, the driving screw 241 drives the moving knife holder 261 to move from the initial position to the direction close to the first cutter end cover 22, at this time, the two circular blades 262 gradually approach and contact the peripheral core liner, rotate the handle 242 to a certain number of revolutions displayed by the counter 246, the peripheral core liner is cut off by the two circular blades 262, at this time, the first motor 121 and the second motor 131 are stopped, the deep sea columnar core with peripheral core liner stops rotating, reverse rotate the handle 242 to drive the moving knife holder 261 to move to the direction close to the second cutter end cover 23, at this time, the large blade 263 gradually approaches and contacts the internal deep sea columnar core, continue to reverse rotate the handle 242 to a certain number of revolutions displayed by the counter 246, the cutting operation of the large blade 263 to the internal deep sea columnar core is completed, then rotate the handle 242 to the initial position where the data displayed by the counter 246 is zero, return the moving knife holder 261 to the initial position, start the first motor 121 and reverse it, drive the spiral groove disc 125 to reverse through the first worm 123 and the first worm wheel 124, thereby driving each sliding clamp block 14 to move away from the axis of the spiral groove disc 125, thereby releasing the clamping.

[0072] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A rotary cutting device suitable for deep-sea columnar cores, characterized by: It includes a clamping and rotating mechanism and a cutting mechanism; The worm gear is a gear which is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear. The worm is arranged in the through cavity, and the second core shaft has a second worm wheel for meshing with the second worm, and the second driver is used to drive the second worm to rotate; a spiral guide groove is provided on the end surface of the first core shaft near one end of the second core shaft, one end of the spiral guide groove is close to the axis of the first core shaft, and the other end thereof is away from the axis of the first core shaft; a plurality of sliding grooves are provided at the end of the second core shaft near the first core shaft, and each sliding clamp is respectively arranged in one of the sliding grooves for sliding along the radial direction of the second core shaft; each sliding clamp is provided with two sliding columns that are kept in the spiral guide groove; the rotation of the first core shaft can drive each sliding clamp in the corresponding sliding groove to approach or move away from the axis of the second core shaft through the spiral guide groove; The cutting mechanism is fixedly arranged at one end of the clamping and rotating mechanism having the first core shaft; the cutting mechanism has a penetrating cutting channel and a connecting channel communicating with the cutting channel, the cutting channel communicating with the second through hole; a cutting unit is arranged in the connecting channel, the cutting unit having a first cutting portion for cutting the peripheral core liner of the deep-sea columnar core and a second cutting portion for cutting the deep-sea columnar core; A high-pressure and low-temperature environment is maintained in the through cavity and the cutting channel.

2. The rotary cutting device for deep-sea columnar cores according to claim 1, characterized in that: The cutting mechanism includes a cutting cabin, a first end cover assembly, a second end cover assembly and the cutting unit; the cutting unit includes a driving rod, a movable blade holder and a connecting rod; The cutting cabin body is provided with the cutting channel and the connecting channel, and the axis of the cutting channel is perpendicular to the axis of the connecting channel; the first end cover assembly and the second end cover assembly are respectively fixedly arranged at the two ends of the connecting channel; the movable knife holder is slidably arranged in the connecting channel along the axis of the connecting channel; the driving rod is arranged on the first end cover assembly, and one end of the driving rod is connected to the movable knife holder; the connecting rod is slidably arranged in the sliding hole of the second end cover assembly along the axis of the connecting channel; two circular blades are fixedly provided on the inner side wall of the movable knife holder which slides along the axial direction of the connecting channel; and a large blade is fixedly provided on the movable knife holder opposite to the two circular blades; the two circular blades form the first cutting part, and the large blade forms the second cutting part.

3. The rotary cutting device for deep-sea columnar cores according to claim 1, characterized in that: The first mandrel comprises a first inner sleeve, a spiral grooved plate and the first worm gear; the second mandrel comprises a second inner sleeve, a fixture mounting plate and a second worm gear; An annular convex ring is fixedly provided in the through cavity; the first core shaft and the second core shaft are both located on the same side of the annular convex ring, and the second core shaft is located at the end of the first core shaft away from the annular convex ring; One end of the first inner sleeve is fixedly connected to the annular convex ring; one end of the spiral grooved disk is fixedly connected to one end of the first worm gear, and the spiral grooved disk is rotatably arranged in the first inner sleeve around the axis of the through-cavity; the first through-hole is formed in the middle of the integral portion of the spiral grooved disk and the first worm gear; the spiral guide groove is formed on the end surface of the spiral grooved disk away from the annular convex ring, with one end of the spiral guide groove close to the center of the end surface of the spiral grooved disk and the other end of the spiral guide groove away from the center of the end surface of the spiral grooved disk; One end of the second inner sleeve is fixedly connected to the end of the first inner sleeve away from the annular convex ring; one end of the clamp mounting plate is fixedly connected to one end of the second worm gear, and the clamp mounting plate is rotatably arranged in the second inner sleeve around the axis of the through-cavity; the second through hole is provided in the middle of the clamp mounting plate and the second worm gear; the end surface of the clamp mounting plate close to the end of the first inner sleeve is provided with each sliding groove, and each sliding groove is circumferentially distributed around the axis of the through-cavity, and the sliding clamp block is set in the corresponding sliding groove along the radial sliding of the through-cavity, and each sliding column of the sliding clamp block in the sliding groove is located in the spiral guide groove.

4. The rotary cutting device for deep-sea columnar cores according to claim 3, characterized in that: A shaft sleeve is fixedly provided on the inner side of the first inner sleeve and the second inner sleeve. The spiral groove disk is rotatably connected in the corresponding shaft sleeve, and the fixture mounting disk is rotatably connected in the corresponding shaft sleeve.

5. The rotary cutting device for deep-sea columnar cores according to claim 3, characterized in that: Two opposite guide ridges are arranged in the sliding groove, and two opposite side walls of the sliding clamp are respectively provided with guide sliding grooves corresponding to the guide ridges.

6. The rotary cutting device for deep-sea columnar cores according to claim 1, characterized in that: The first driver includes a first motor, a first coupling and a first motor fixing bracket; the second driver includes a second motor, a second coupling and a second motor fixing bracket; The clamping rotating cabin is provided with a first worm through-hole and a second worm through-hole communicating with the through-cavity; the first motor is fixedly mounted on the clamping rotating cabin via the first motor fixing bracket, and the second motor is fixedly mounted on the clamping rotating cabin via the second motor fixing bracket; The first worm is rotatably arranged in the first worm through-hole, one end of the first worm is fixedly connected to the output shaft of the first motor through the first coupling, and the other end of the first worm is rotatably arranged on the clamping rotating cabin through the first sealing assembly; the second worm is rotatably arranged in the second worm through-hole, one end of the second worm is fixedly connected to the output shaft of the second motor through the second coupling, and the other end of the second worm is rotatably arranged on the clamping rotating cabin through the second sealing assembly.

7. The rotary cutting device for deep-sea columnar cores according to claim 3, characterized in that: A clamping end cover is fixedly provided on one end of the clamping rotating cabin away from the cutting mechanism; One end of the clamping end cover is located in the through cavity and abuts against the end of the annular convex ring away from the first inner sleeve; and an extension tube is fixedly provided on the end of the clamping end cover close to the first worm gear, and the extension tube is docked with the first worm gear; the clamping end cover has a guide channel, and one end of the guide channel is used to communicate with one end of the first through hole close to the first worm gear.

8. The rotary cutting device for deep-sea columnar cores according to claim 3, characterized in that: A plurality of slots are provided on one end of the first inner sleeve close to the second inner sleeve, and a plurality of plug-in blocks are fixedly provided on one end of the second inner sleeve close to the first inner sleeve; each plug-in block is plugged and fixed in the corresponding slot along the axial direction of the cavity; A clamping ring is fixedly provided on the side of the second inner sleeve away from the first inner sleeve; a docking tube is provided at one end of the cutting mechanism. After the cutting mechanism is fixedly connected to the clamping and rotating mechanism, the docking tube is located in the through cavity and is crimped on the end of the clamping ring away from the second inner sleeve.

9. The rotary cutting device for deep-sea columnar cores according to claim 2, characterized in that: The openings at both ends of the communication channel on the cutting cabin are sealed and fixedly provided with a first cutter end cover and a second cutter end cover respectively; The first end cover assembly includes an active screw, a handle, a transition block, a pressure block and a first screw seat; the pressure block is fixedly arranged on the first screw seat, and the first screw seat is fixedly arranged on the first cutter end cover; one end of the active screw slides along its own axis in sequence through the passages provided on the pressure block, the first screw seat and the first cutter end cover and is fixedly connected to the movable tool holder; the transition block is rotatable around the axis of the active screw and is arranged in the inner cavity of the pressure block, the transition block is threadedly connected to the active screw, and the handle is fixedly connected to the transition block; The second end cover assembly includes a second screw seat and a connecting rod; the second screw seat is fixedly set on the second cutter end cover, and the connecting rod slides along its own axis and passes through the through channel of the second screw seat and the second cutter end cover, and one end of the connecting rod is fixedly connected to the movable tool holder.

10. The rotary cutting device for deep-sea columnar cores according to claim 9, characterized in that: A counter is provided on the handle.

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