Rotary cutting device suitable for deep sea columnar rock core

Abstract

The invention discloses a rotary cutting device suitable for a deep-sea columnar rock core, and relates to the technical field of deep-sea rock core processing equipment, the rotary cutting device comprises a clamping rotating mechanism and a cutting mechanism; the clamping and rotating mechanism is used for clamping a deep sea columnar rock core which is arranged in the clamping and rotating mechanism in a penetrating manner and is provided with a peripheral rock core liner tube and rotating at a constant speed; the cutting mechanism is used for cutting off the cylindrical core, the cutting is divided into two steps, the first step is to cut off the peripheral core liner tube, and the second step is to cut off the inner deep-sea cylindrical core. The deep-sea columnar rock core cutting device can achieve on-site segmented cutting of deep-sea columnar rock cores, it is guaranteed that the rock cores are still in a stable high-pressure and low-temperature environment in the cutting process, and decomposition of combustible ice is reduced; the core sample is more convenient to store and transport in a pressure-maintaining manner through segmented cutting, and pressure-maintaining core samples with different lengths can be provided for various types of analytical instruments and test equipment, so that test and analysis data are more accurate, and an important basis is provided for the recoverability evaluation of the combustible ice reservoir.

Description

Technical Field

[0001] The 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 resources, high energy density, clean and environmentally friendly. The total amount of organic carbon it contains is about twice that of existing fossil energy, and it is a strategic commanding height for future global energy development. As a national energy strategic focus, the industrialization development of methane hydrate is of great significance to ensuring national energy resource security and improving the energy structure. Mastering the evolution characteristics of the basic physical properties of methane hydrate reservoirs is of great significance to improving the comprehensive strength of methane hydrate resource exploration and trial production. However, the 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 the understanding of the simulation experiments and the needs of the methane hydrate exploration and trial production projects, and 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 methane hydrate into sections in 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, and to realize rotary cutting of columnar cores, making them more convenient for pressure-maintaining storage and transportation, and providing core samples of different lengths.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a rotary cutting device suitable for deep-sea columnar 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 spindle; the second rotator comprises a second driver, a second worm and a second spindle; the clamp comprises a plurality of sliding clamps; the first spindle and the second spindle are both rotatably arranged in the through cavity, and the first spindle and the second spindle are coaxially arranged opposite to each other, a first through hole is provided on the first spindle, and a second through hole connected to the first through hole is provided on the second spindle; the first worm is rotatably arranged in the through cavity, the first spindle has a first worm wheel for meshing with the first worm, and the first driver is used to drive the first worm to rotate; the second worm is rotatably arranged in the through cavity, the second spindle 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 second worm is rotatably arranged in the through cavity, the second spindle 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 arranged on the end surface of one end of a mandrel close to the second mandrel, one end of the spiral guide groove is close to the axis of the first mandrel, and the other end thereof is far away from the axis of the first mandrel; a plurality of sliding grooves are arranged on the end of the second mandrel close to the first mandrel, and each sliding clamp is respectively arranged in one of the sliding grooves for radial sliding sliding along the second mandrel; each sliding clamp is provided with two sliding columns that are kept in the spiral guide groove; the rotation of the first mandrel can drive each sliding clamp to approach or move away from the axis of the second mandrel in the corresponding sliding groove through the spiral guide groove; the cutting mechanism is fixedly arranged on one end of the clamping rotating mechanism having the first mandrel; the cutting mechanism has a through cutting channel and a connecting channel connected with the cutting channel, and the cutting channel is connected with the second through hole; a cutting unit is arranged 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.

[0006] Preferably, 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 knife holder and a connecting rod; the cutting cabin 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 arranged on the inner side wall of the movable knife holder sliding along the axial direction of the connecting channel; and a large blade is fixedly arranged 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.

[0007] Preferably, the first mandrel comprises a first inner sleeve, a spiral groove disk and the first worm gear; the second mandrel comprises a second inner sleeve, a fixture mounting disk and a second worm gear; an annular convex ring is fixedly arranged in the through cavity; the first mandrel and the second mandrel are both located on the same side of the annular convex ring, and the second mandrel is located at the end of the first mandrel 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 groove disk is fixedly connected to one end of the first worm gear, and the spiral groove disk is rotatably arranged in the first inner sleeve around the axis of the through cavity; the first through hole is provided in the middle part of the spiral groove disk and the first worm gear as a whole; the spiral guide groove is provided on the end surface of the end of the spiral groove disk away from the annular convex ring, and one end of the spiral guide groove is close to The center of the end face of the spiral groove disk, and the other end of the spiral guide groove is away from the center of the end face of the spiral groove 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; each sliding groove is provided on the end face of one end of the clamp mounting plate close to the first inner sleeve, and each sliding groove is circumferentially distributed around the axis of the through cavity, 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.

[0008] 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.

[0009] Preferably, two opposite guiding ridges are arranged in the sliding groove, and two opposite side walls of the sliding clamp block are provided with guiding sliding grooves corresponding to the guiding ridges.

[0010] Preferably, 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 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.

[0011] 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 one 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.

[0012] Preferably, a plurality of slots are provided at one end of the first inner circular sleeve close to the second inner circular sleeve, and a plurality of plug-in blocks are fixedly provided at one end of the second inner circular sleeve close to the first inner circular sleeve; each of the plug-in blocks is plugged and fixed in the corresponding slot along the axial direction of the through-hole; a clamping ring is fixedly provided on the side of the second inner circular sleeve away from the first inner circular 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-hole and is crimped on the end of the clamping ring away from the second inner circular sleeve.

[0013] 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 comprises an active screw, a handle, a transition block, a pressure block and a first screw seat; the pressure block is fixedly provided on the first screw seat, and the first screw seat is fixedly provided on the first cutter end cover; one end of the active screw slides along its own axis and passes through the through-channels on the pressure block, the first screw seat and the first cutter end cover in sequence, and is fixedly connected to the movable tool holder; the transition block is rotatably provided in the inner cavity of the pressure block around the axis of the active screw, 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 comprises a second screw seat and a connecting rod; the second screw seat is fixedly provided on the second cutter end cover, the connecting rod slides along its own axis and passes through the through-channels 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.

[0014] Preferably, a counter is provided on the handle.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: 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 rotating mechanism and cutting mechanism and the high-pressure and low-temperature environment maintained inside, and during the cutting process, it can ensure that the core remains in a stable high-pressure and low-temperature environment, thereby reducing the decomposition of combustible ice; segmented cutting makes it easier to store and transport core samples under pressure, and can provide pressure-maintained core samples of different lengths for various types of analytical instruments and testing equipment, making test and analysis data more accurate, thereby providing an important basis for the evaluation of the recoverability of combustible ice reservoirs; a matching structure of a worm and a worm wheel is adopted to realize driving 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 on 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, the linkage of the first driver and the second driver is coordinated 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

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0017] Figure 1 A front view of the overall structure of the rotary cutting device for deep-sea columnar cores provided by the present invention; Figure 2 A three-dimensional view of a rotary cutting device suitable for deep-sea columnar cores provided by the present invention; Figure 3 A schematic cross-sectional structure diagram of a rotary cutting device suitable for deep-sea columnar cores provided by the present invention; Figure 4 A top view of a rotary cutting device suitable for deep-sea columnar cores provided by the present invention; Figure 5 A schematic cross-sectional structure diagram of a clamping and rotating mechanism in a rotating cutting device for deep-sea columnar cores provided by the present invention; Figure 6 An exploded view of the structure of the internal components of the rotary cutting device for deep-sea columnar cores provided by the present invention at a first viewing angle; Figure 7 An exploded view of the structure of the internal components of the rotary cutting device for deep-sea columnar cores provided by the present invention at a second viewing angle; Figure 8 A schematic cross-sectional structure diagram of a cutting mechanism in a rotary cutting device suitable for deep-sea columnar cores provided by the present invention.

[0018] In the figure: 10- Clamping and rotating mechanism; 11-clamping the rotating cabin; 111-annular convex ring; 12-first rotator; 121-first motor; 122-first motor fixing frame; 123-first worm; 124-first worm wheel; 125-spiral groove plate; 1251-spiral guide groove; 126-shaft sleeve; 127-first inner sleeve; 1271-slot; 13-second rotator; 131-second motor; 132-second motor fixing bracket; 133-second worm; 134-second worm wheel; 135-clamp mounting plate; 1351-sliding groove; 1352-guide ridge; 136-second inner sleeve; 1361-plug-in block; 137-pressing ring; 14-sliding clamp; 141-sliding column; 15-sealing gland; 151-pin hole sleeve; 20- cutting mechanism; 21-cutting cabin; 211-cutting channel; 212-communication channel; 22-first cutter end cover; 23-second cutter end cover; 24-first end cover assembly; 241-active screw rod; 242-handle; 243-transition block; 244-pressing block; 245-first screw rod seat; 246-counter; 25-second end cover assembly; 251-second screw rod seat; 252-connecting rod; 26-copper sleeve; 261-movable tool holder; 262-circular blade; 263-large blade; 30-clamping end cover; 31-extension tube; 32-guide channel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] 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 prior art, enable rotary cutting of columnar cores, make them more convenient for pressure-maintaining storage and transportation, and provide core samples of different lengths.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Embodiment 1 This embodiment provides a rotary cutting device suitable for deep-sea columnar cores, such as Figure 1 to Figure 8 As shown, it includes a clamping and rotating mechanism 10 and a cutting mechanism 20; The clamping and rotating mechanism 10 includes a clamping and rotating chamber 11, a first rotator 12, a second rotator 13 and a clamp; the clamping and rotating chamber 11 has a through cavity; the first rotator 12 includes a first driver, a first worm 123 and a first spindle; the second rotator 13 includes a second driver, a second worm 133 and a second spindle; the clamp includes a plurality of sliding clamps 14; the first spindle and the second spindle are both rotatably arranged in the through cavity, and the first spindle and the second spindle are coaxially arranged opposite to each other, a first through hole is provided on the first spindle, and a second through hole connected to the first through hole is provided on the second spindle; the first worm 123 is rotatably arranged in the through cavity, the first spindle has a first worm wheel 124 for meshing with the first worm 123, and the first driver is used to drive the first worm 123 to rotate; the second worm 133 is rotatably arranged in the through cavity, and the second spindle has a first worm wheel 124 for meshing with the second worm 123 The second worm wheel 134 meshes 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 spindle close to the second spindle, one end of the spiral guide groove 1251 is close to the axis of the first spindle, and the other end thereof is away from the axis of the first spindle; a plurality of sliding grooves 1351 are provided on the end of the second spindle close to the first spindle, and each sliding clamp 14 is respectively set in a sliding groove 1351 along the radial sliding of the second spindle; each sliding clamp 14 is provided with two sliding clamps 141 which are kept 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 spindle can drive each sliding clamp 14 to approach or move away from the axis of the second spindle in the corresponding sliding groove 1351 through the spiral guide groove 1251; The cutting mechanism 20 is fixedly arranged at one end of the clamping rotating mechanism 10 having the first core shaft; the cutting mechanism 20 has a through cutting channel 211 and a connecting channel 212 connected with the cutting channel 211, and the cutting channel 211 is connected with the second through hole; a cutting unit is arranged in the connecting channel 212, and the cutting unit has a first cutting part for cutting the peripheral core liner of the deep-sea columnar core and a second cutting part for cutting the deep-sea columnar core (the deep-sea columnar core having the peripheral core liner is arranged in the through cavity and the cutting channel 211, so there will be an operation of cutting the peripheral core liner first and then cutting the deep-sea columnar core); A high-pressure and low-temperature environment is maintained in the through cavity and the cutting channel 211 (the high-pressure and low-temperature environment is achieved by filling the through cavity and the cutting channel 211 with seawater).

[0023] Through the 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 during the cutting process, it is ensured that the cores are still in a stable high-pressure and low-temperature environment, thereby reducing the decomposition of combustible ice; segmented cutting makes it easier to store and transport core samples under pressure, and can provide various types of analytical instruments and test equipment with pressure-maintaining core samples of different lengths, 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 mandrel and the second mandrel, and the end face of the first mandrel 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 realizing the gradual clamping of the internal penetrating object. After it is clamped, the linkage of the first driver and the second driver is coordinated to realize the rotation of the internal penetrating object 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 operation on the deep-sea columnar core.

[0024] Among them, the relevant setting description of the clamping and rotating mechanism 10 is as follows: The specific composition of the first mandrel and the second mandrel inside is as follows: In the optional scheme of this embodiment, it is more preferred that Figure 3 and Figure 5~Figure 7As shown, the first mandrel includes a first inner sleeve 127, a spiral groove plate 125 and a first worm gear 124; the second mandrel includes a second inner sleeve 136, a fixture mounting plate 135 and a second worm gear 134; an annular convex ring 111 is fixedly arranged in the through 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, a plurality of fixing pin holes are provided at one end close to the annular convex ring 111, and a fixing connecting pin is inserted into each corresponding fixing pin hole; one end of the spiral groove plate 125 is fixedly connected to one end of the first worm gear 124, and the spiral groove plate 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 groove plate 125 and the first worm gear 124; a spiral guide groove 1251 is provided on the end surface of the end of the spiral groove plate 125 away from the annular convex ring 111, and one end of the spiral guide groove 1251 is close to 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 rotatably arranged in the second inner sleeve 136 around the axis passing through the cavity; a second through hole is provided in the middle of the whole of the 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 each sliding groove 1351 is circumferentially distributed around the axis passing through the cavity, and the sliding clamp block 14 is set in the corresponding sliding groove 1351 along the radial direction of the cavity, and each sliding clamp block 141 of the sliding clamp block 14 in the sliding groove 1351 is located in the spiral guide groove 1251.

[0025] In the optional scheme of this embodiment, it is more preferred that Figure 3 and Figure 5~Figure 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 disk 125 is rotatably connected in the corresponding shaft sleeves 126 , and the fixture mounting disk 135 is rotatably connected in the corresponding shaft sleeves 126 .

[0026] In the optional scheme of this embodiment, it is more preferred that Figure 7As shown, two opposite guide ridges 1352 are disposed in the sliding groove 1351 , and two opposite side walls of the sliding clamping block 14 are both provided with guide sliding grooves corresponding to the guide ridges 1352 .

[0027] In the optional scheme of this embodiment, it is more preferred that Figure 6 and Figure 7 As shown, a plurality of slots 1271 are provided at one end of the first inner circular sleeve 127 close to the second inner circular sleeve 136, and a plurality of plug-in blocks 1361 are fixedly provided at one end of the second inner circular sleeve 136 close to the first inner circular sleeve 127; each plug-in block 1361 is plugged and fixed in the corresponding slot 1271 along the axial direction of the through-hole; a clamping ring 137 is fixedly provided on the side of the second inner circular sleeve 136 away from the first inner circular sleeve 127; a docking tube is provided at one end of the cutting mechanism 20, and after the cutting mechanism 20 is fixedly connected to the clamping and rotating mechanism 10, the docking tube is located in the through-hole and is crimped to the end of the clamping ring 137 away from the second inner circular sleeve 136.

[0028] Specifically, the fixed connection method between the first worm gear 124 and the spiral groove plate 125 is the same as the fixed connection method between the second worm gear 134 and the fixture mounting plate 135; the first worm gear 124 is fixedly connected to the spiral groove plate 125 by a connecting flange plate set at one end and a plurality of bolts (threaded holes are set at the corresponding bolt positions of the spiral groove plate 125).

[0029] 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 both provided with limiting inner convex rings for limiting the end of the corresponding shaft sleeve 126 .

[0030] Instructions for setting up the first and second drives: In the optional scheme of this embodiment, it is more preferred that Figure 1 to Figure 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 chamber 11 is provided with a first worm 123 through hole and a second worm 133 through hole which are connected to the through cavity; the first motor 121 is fixedly arranged on the clamping rotating chamber 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 chamber 11 through bolts), and the second motor 131 is fixedly arranged on the second motor fixing frame 122 through the second motor fixing frame 122 The machine fixing frame 132 is fixedly set on the clamping rotating cabin body 11; the first worm 123 is rotatably set in the through hole of the first worm 123, one end of the first worm 123 is fixedly connected to the output shaft of the first motor 121 through a first coupling, and the other end of the first worm 123 is rotatably set on the clamping rotating cabin body 11 through a first sealing assembly; the second worm 133 is rotatably set in the through hole of the second worm 133, one end of the second worm 133 is fixedly connected to the output shaft of the second motor 131 through a second coupling, and the other end of the second worm 133 is rotatably set on the clamping rotating cabin body 11 through a second sealing assembly.

[0031] Specifically, the structures of the first sealing component and the second sealing component are the same, and the first sealing component is taken as an example for specific description: the first sealing component includes a bearing copper sleeve, a grid ring copper sleeve, a sealing gland 15 and a pin hole sleeve 151; the bearing copper sleeve and the grid ring copper sleeve are both sleeved on the end of the first worm 123, and the bearing copper sleeve is fixedly arranged at one end of the grid ring copper sleeve close to the first through hole, and the bearing copper sleeve and the grid ring copper sleeve are both located in the through hole of the first worm 123; a sealing gland 15 is fixedly arranged on the clamping rotating cabin 11 at the end of the through hole of the first worm 123; the first worm 123 passes through the bearing copper sleeve, the grid ring copper sleeve and the sealing gland 15 in sequence, and is fixedly connected to the pin hole sleeve 151 through a cotter pin; a thrust washer is also arranged between the grid ring copper sleeve and the pin hole sleeve 151, and the corresponding ends of the thrust washer and the grid ring copper sleeve are both located in the sealing gland 15; the pin hole sleeve 151 is located on the outside of the sealing gland 15.

[0032] For other setting instructions on the clamping rotating cabin 11: In the optional scheme of this embodiment, it is more preferred that Figure 1~Figure 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 one 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.

[0033] Specifically, the end of the clamping end cover 30 away from the clamping rotating chamber 11 is used for docking 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 except the guide channel 32 at other docking positions.

[0034] Among them, the relevant setting description of the cutting mechanism 20 is as follows: In the optional scheme of this embodiment, it is more preferred that Figure 1~Figure 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 knife holder 261 and a connecting rod 252; the cutting cabin 21 is provided with a cutting channel 211 and a connecting channel 212, and the axis of the cutting channel 211 is perpendicularly intersected with 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 knife 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 knife holder 261 is connected; the connecting rod 252 is slidably set 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 set 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 set 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).

[0035] In the optional scheme of this embodiment, it is more preferred that Figure 8As shown, the openings at both ends of the communication 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 passages provided on the pressure block 244, the first screw rod seat 245 and the first cutter end cover 22 The handle 242 is fixedly connected to the transition block 243; the second end cover assembly 25 comprises a second screw seat 251 and a connecting rod 252; the second screw seat 251 is fixedly arranged on the second cutter end cover 23, the connecting rod 252 is slidably arranged along its own axis and penetrates through the second screw seat 251 and the second cutter end cover 23 in the through channel, and one end of the connecting rod 252 is fixedly connected to the movable tool holder 261.

[0036] Specifically, a copper sleeve 26 is fixedly inserted into the communication channel 212 , a guide groove is provided in the copper sleeve 26 , and the movable tool holder 261 is slidably provided in the guide groove.

[0037] In the optional scheme 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 .

[0038] Among them, the working process is described as follows: Before starting work, turn the handle 242 until the data displayed on the counter 246 is zero, so that the movable tool holder 261 is located at the initial position. Push the deep-sea cylindrical core with the peripheral core liner into the clamping rotating mechanism 10 and the cutting mechanism 20 through the mobile positioning device, start the first motor 121, and the first motor 121 drives the first worm 123 to rotate through the first coupling, thereby driving the first worm gear 124 to rotate, and the spiral groove disk 125 fixedly connected to the first worm gear 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 toward the axis of the spiral groove disk 125, thereby clamping the core liner with the peripheral core liner. The deep-sea columnar core of the tube (each sliding clamp block 14 is circumferentially distributed along the axis of the spiral groove disk 125, and the end of each sliding clamp block 14 for clamping is provided with an anti-slip groove); when it is clamped, the second motor 131 is started, and at this time, the second motor 131 drives the clamp mounting plate 135 through the second worm 133 and the second worm gear 134 to realize synchronous rotation with the spiral groove disk 125 driven by the first motor 121 through the first worm 123 and the first worm gear 124, that is, the deep-sea columnar core with the peripheral core liner is driven to rotate. When it starts to rotate, slowly turn the handle 242 to drive the active screw rod 241 to move away from the cutting cabin body 21. At this time, the active screw rod 241 moves with the movable tool holder 261 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 outer core liner. Turn the handle 242 until the counter 246 displays a certain number of circles, and the outer core liner is cut off by the two circular blades 262. At this time, stop the first motor 121 and the second motor 131, and the deep-sea columnar core with the outer core liner stops rotating. Turn the handle 242 in the opposite direction to drive the movable tool holder 261 to move closer to the outer core liner. The large blade 263 gradually approaches and contacts the deep-sea columnar core inside, and the handle 242 is rotated in the reverse direction until the counter 246 displays a certain number of revolutions to complete the cutting operation of the large blade 263 on the deep-sea columnar core inside. The handle 242 is then rotated forward to the initial position where the counter 246 displays zero data, and the movable tool holder 261 is returned to the initial position. The first motor 121 is started and reversed, and the spiral groove disk 125 is driven to reverse through the first worm 123 and the first worm gear 124, so that each sliding clamping block 14 is driven to move in the axial direction away from the spiral groove disk 125, thereby releasing the clamping.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A rotary cutting device suitable for deep-sea columnar cores, characterized in that: It includes a clamping and rotating mechanism and a cutting mechanism; The clamping and rotating mechanism includes 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 includes a first driver, a first worm and a first spindle; the second rotator includes a second driver, a second worm and a second spindle; the clamp includes a plurality of sliding clamps; the first spindle and the second spindle are both rotatably arranged in the through cavity, and the first spindle and the second spindle are coaxially arranged opposite to each other, a first through hole is provided on the first spindle, and a second through hole connected to the first through hole is provided on the second spindle; the first worm is rotatably arranged in the through cavity, the first spindle 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 The worm is rotatably arranged in the through cavity, and the second core shaft is provided with 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 arranged on the end surface of one end of the first core shaft close to 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 far away from the axis of the first core shaft; a plurality of sliding grooves are arranged at one end of the second core shaft close to the first core shaft, and each sliding clamp is respectively slidably arranged in one of the sliding grooves along the radial direction of the second core shaft; each sliding clamp is provided with two sliding columns which 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 mandrel; 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 arranged 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.

2. The rotary cutting device for deep-sea columnar cores according to claim 1, characterized in that: 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 movable knife holder and a connecting rod; The cutting chamber body is provided with the cutting channel and the connecting channel, and the axis of the cutting channel intersects with the axis of the connecting channel at right angles; the first end cover assembly and the second end cover assembly are fixedly arranged at the two ends of the connecting channel respectively; the movable tool 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 tool 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 arranged on the inner side wall of the movable tool holder sliding along the axial direction of the connecting channel; and a large blade is fixedly arranged on the movable tool 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 groove 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 arranged in the through cavity; the first mandrel and the second mandrel are both located on the same side of the annular convex ring, and the second mandrel is located at an end of the first mandrel 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 groove disk is fixedly connected to one end of the first worm wheel, and the spiral groove disk is rotatably arranged in the first inner sleeve around the axis of the through cavity; the first through hole is provided in the middle of the integral part of the spiral groove disk and the first worm wheel; the spiral guide groove is provided on the end surface of the end of the spiral groove disk away from the annular convex ring, one end of the spiral guide groove is close to the center of the end surface of the spiral groove disk, and the other end of the spiral guide groove is away from the center of the end surface of the spiral groove disk; One end of the second inner sleeve is fixedly connected to one 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 one 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, 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: Axle sleeves are fixedly penetrated on the inner sides of the first inner circular sleeve and the second inner circular sleeve, the spiral groove disk is rotatably connected in the corresponding axle sleeve, and the clamp mounting disk is rotatably connected in the corresponding axle sleeve.

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

6. The rotary cutting device for deep-sea columnar cores according to claim 1, characterized in that: The first driver comprises a first motor, a first coupling and a first motor fixing bracket; the second driver comprises a second motor, a second coupling and a second motor fixing bracket; The clamping rotating cabin body is provided with a first worm through hole and a second worm through hole which are in communication with the through cavity; the first motor is fixedly arranged on the clamping rotating cabin body via the first motor fixing frame, and the second motor is fixedly arranged on the clamping rotating cabin body via the second motor fixing frame; 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 via the first coupling, and the other end of the first worm is rotatably arranged on the clamping rotating cabin via 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 via the second coupling, and the other end of the second worm is rotatably arranged on the clamping rotating cabin via 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 also 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 one end of the annular convex ring away from the first inner sleeve; and an extension tube is fixedly provided on 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, one end of which 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 arranged at one end of the first inner sleeve close to the second inner sleeve, and a plurality of plug-in blocks are fixedly arranged at one end of the second inner sleeve close to the first inner sleeve; each of the plug-in blocks 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 circular sleeve away from the first inner circular 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 crimped on the end of the clamping ring away from the second inner circular 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 respectively sealed and fixedly provided with a first cutter end cover and a second cutter end cover; The first end cover assembly comprises 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 and passes through the passages arranged on the pressure block, the first screw seat and the first cutter end cover in sequence, and is then fixedly connected to the movable tool holder; the transition block is rotatably arranged in the inner cavity of the pressure block around the axis of the active screw, 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 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 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 arranged on the handle.

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