High-temperature and high-pressure device for geological research

Abstract

The invention discloses a high-temperature and high-pressure device for geological research, and the device comprises a frame body which comprises a bottom plate and a top plate which are arranged in the horizontal direction, and the bottom plate is fixedly connected with the top plate; the lifting circular truncated cone is arranged in the vertical direction, penetrates through the top plate and is in threaded connection with the top plate; the upper oil cylinder and the lifting circular table are coaxially arranged and rotationally connected; according to the invention, the arranged frame body is used for mounting the lifting circular truncated cone and the upper oil cylinder, the arranged lifting circular truncated cone is in threaded connection with the top plate, the lifting circular truncated cone can be lifted by rotating the lifting circular truncated cone, so that the upper oil cylinder can be driven to lift, and the arranged upper oil cylinder can be used for applying pressure to a sample and pressing the sample against the bottom plate; a high-pressure environment can be provided, and a superhigh-temperature and high-pressure extreme experiment condition can be provided for geological experiment research, such as simulation of reaction transformation of crustal rocks or compression resistance test of superhard materials under a superhigh-temperature condition in cooperation with a heating structure in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field of pressure experiments, and in particular relates to a high-temperature and high-pressure device for geological research. Background Art

[0002] In fields such as physics, chemistry, materials science, and earth science, extreme environments of high temperature and high pressure are extremely effective or necessary conditions, such as simulating the reaction transformation of crustal rocks, synthesizing superhard materials or new materials, and compressive testing under ultra-high temperature and high pressure conditions.

[0003] Existing high-temperature, high-pressure devices generally utilize split hydraulic drive systems, which present significant technical bottlenecks. For example, the hydraulic cylinder has both manual and automatic modes. To adjust the piston position, whether contacting or separating it from the sample, the operator must first use the manual mode to lower the piston until it contacts the material, then switch to automatic mode to apply pressure to the material. This manual process of lowering the piston until it contacts the material takes approximately five minutes, severely impacting experimental efficiency. Furthermore, the coexistence of manual and automatic modes further increases the size of the high-temperature, high-pressure device, further limiting the required space and installation location.

[0004] The relevant document discloses a bidirectional piston cylinder type ultra-high temperature and high pressure device and its use method, including an upper base plate, a lower base plate, and an upper oil cylinder, a lower oil cylinder, an upper piston, a lower piston, a transformer, a pressure sensor, a heating element, an upper piston seat and a pressure chamber for holding samples, etc. arranged between the upper base plate and the lower base plate; the upper base plate and the lower base plate are both arranged horizontally and connected by multiple pull rods.

[0005] When adjusting the piston position of this high-temperature and high-pressure device to make the piston contact or stay away from the sample, it is still necessary to adjust the height of the cylinder piston through the manual mode of the cylinder, and the adjustment speed is slow. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-temperature and high-pressure device for geological research to solve the problem in the prior art that the height of the cylinder piston needs to be adjusted manually in the cylinder mode and the adjustment speed is slow.

[0007] To achieve the above object, the technical solution adopted by the present invention is: A high-temperature and high-pressure device for geological research, comprising: A frame body, the frame body comprising a bottom plate and a top plate arranged in a horizontal direction, the bottom plate being fixedly connected to the top plate; A lifting platform is arranged in the vertical direction, the lifting platform passes through the top plate and is threadedly connected to the top plate; The upper oil cylinder is coaxially arranged with the lifting platform and is rotatably connected thereto.

[0008] The present invention uses a frame to install a lifting table and an upper oil cylinder. The lifting table is threadedly connected to the top plate. The lifting table can be raised or lowered by rotating the lifting table, thereby driving the upper oil cylinder to rise or fall. The upper oil cylinder can apply pressure to the sample and press the sample against the bottom plate, thereby providing a high-pressure environment. Combined with the heating structure in the prior art, it can provide an extreme experimental condition of ultra-high temperature and high pressure for geological experimental research, such as simulating the reaction transformation of crustal rocks, the synthesis of superhard materials or new materials, and compression testing under ultra-high temperature and high pressure conditions.

[0009] The present invention connects the lifting table to the top plate through a threaded connection, so that when the lifting table rotates, the upper oil cylinder can be driven to rise and fall, thereby quickly adjusting the piston height of the upper oil cylinder, speeding up the sample loading and pressure release stages. Moreover, because the piston height of the upper oil cylinder can be adjusted by rotating the lifting table, the upper oil cylinder does not need a manual mode, and only an automatic mode can meet the use requirements. This can effectively reduce the length of the upper oil cylinder, thereby reducing the height of the entire device, which is conducive to the miniaturization of the device. The present invention rotatably connects the upper oil cylinder with the lifting platform so that when the lifting platform rotates, the upper oil cylinder does not need to rotate with the lifting platform. The upper oil cylinder can only be lifted and lowered by the lifting platform without rotating with the lifting platform. Therefore, it is beneficial to the oil circuit connection between the upper oil cylinder and the hydraulic station. The upper oil cylinder can be connected to the hydraulic station through multiple oil circuits.

[0010] Furthermore, the top plate and the bottom plate are fixed by a plurality of vertically arranged tie rods, the top ends of the tie rods are fixedly connected to the top plate, and the bottom ends of the tie rods are fixed to the bottom plate; the tie rods are arranged to fix the top plate and the bottom plate.

[0011] Furthermore, a plurality of the pull rods are each provided with a sliding sleeve, and a plurality of the sliding sleeves are fixedly connected to the upper oil cylinder through a connecting rod. The upper oil cylinder is slidably connected to the connecting rod and the sliding sleeve and the pull rod, and can guide the upper oil cylinder to rise and fall through the pull rod, so that the operation of the upper oil cylinder is more stable during the lifting process, and the upper oil cylinder and the pull rod are not coaxial, so the pull rod can also limit the rotation of the upper oil cylinder, so that the upper oil cylinder can only be lifted and lowered by the lifting table without rotating, and the non-rotation of the upper oil cylinder is conducive to the oil circuit connection between the upper oil cylinder and the hydraulic station.

[0012] Furthermore, a mounting hole is coaxially provided on the bottom surface of the lifting platform, and an annular mounting groove is provided on the hole wall of the mounting hole along its circumference, and a mounting ring is coaxially fixed to the lower part of the upper oil cylinder, and the mounting ring extends into the mounting groove so that the upper oil cylinder is rotatably connected to the lifting platform. By providing a mounting hole on the bottom surface of the lifting platform and the upper oil cylinder being rotatably installed in the mounting hole, the internal space of the lifting platform can be fully utilized, so that the lifting platform and the upper oil cylinder partially overlap in height, which can effectively reduce the overall height of the device and is conducive to the miniaturization of the device; by providing a mounting groove on the mounting hole and arranging a mounting ring on the upper oil cylinder, the upper oil cylinder can be rotatably installed in the mounting hole. By setting the mounting method, the bottom end of the upper oil cylinder can be flush with the bottom end of the lifting platform, or the bottom end of the upper oil cylinder can extend out of the mounting hole, which can avoid the lifting platform occupying the space between the upper oil cylinder and the sample, thereby further reducing the height of the entire device.

[0013] Furthermore, when the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, a gap is left between the upper oil cylinder and the bottom surface of the mounting hole. When the upper oil cylinder does not contact the sample, the bottom surface of the mounting ring will be pressed against the lower side surface of the mounting groove under the action of gravity. In this case, when the lifting table is rotated, the top surface of the upper oil cylinder does not directly contact the bottom surface of the mounting hole, which can avoid friction between the top surface of the upper oil cylinder and the bottom surface of the mounting hole, and avoid wear of the top surface of the upper oil cylinder and the bottom surface of the mounting hole due to friction. Uneven wear may cause the coaxiality between the lifting table and the upper oil cylinder to deteriorate, thereby affecting the transmission of force of the entire device.

[0014] Furthermore, when the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, the distance from the top surface of the mounting ring to the upper side surface of the mounting groove is greater than the distance from the upper oil cylinder to the bottom surface of the mounting hole. Before the upper oil cylinder contacts the sample, the bottom surface of the mounting ring will be pressed against the lower side surface of the mounting groove under the action of gravity. After the upper oil cylinder contacts the sample, when the lifting table continues to descend, the sample will support the upper oil cylinder and prevent the upper oil cylinder from continuing to descend. Because when the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, the distance from the top surface of the mounting ring to the bottom surface of the mounting hole is greater than the distance from the upper oil cylinder to the bottom surface of the mounting hole. The distance between the upper side surface of the mounting groove is greater than the distance between the upper oil cylinder and the bottom surface of the mounting hole. Therefore, when the upper oil cylinder is supported by the sample and the lifting table continues to descend, the upper oil cylinder will slowly approach the bottom surface of the mounting hole, and finally the top surface of the upper oil cylinder will hit the bottom surface of the mounting hole. When the top surface of the upper oil cylinder hits the bottom surface of the mounting hole, there is still a distance between the top surface of the mounting ring and the upper side surface of the mounting groove. The upper oil cylinder only transmits the vertical force to the lifting table through the bottom surface of the mounting hole, which can avoid the upper oil cylinder transmitting the vertical force to the lifting table through the mounting ring, thereby causing damage to the mounting ring.

[0015] When the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, the distance from the top surface of the mounting ring to the upper side surface of the mounting groove is greater than the distance from the upper oil cylinder to the bottom surface of the mounting hole, which can also avoid friction between the top surface of the mounting ring and the upper side surface of the mounting groove, so that the lifting table can rotate more smoothly.

[0016] Furthermore, several first balls for reducing friction are provided between the bottom surface of the mounting ring and the lower side surface of the mounting groove. A first receiving groove for accommodating the first balls is coaxially opened on the bottom surface of the mounting ring. The cross-section of the first receiving groove is an inverted Ω shape. By setting the cross-section of the first receiving groove to an inverted Ω shape, the first ball cannot fall out of the first receiving groove when the upper cylinder approaches the bottom surface of the mounting hole.

[0017] Furthermore, several second balls for reducing friction are provided between the outer peripheral wall of the upper oil cylinder and the inner wall of the mounting hole, and at least two second receiving grooves for accommodating the second balls are coaxially opened from top to bottom on the inner wall of the mounting hole, and the cross-section of the second receiving groove is in an inverted Ω shape. By providing the second balls, the friction between the inner wall of the mounting hole and the outer periphery of the upper oil cylinder can be effectively reduced when relative rotation and relative up and down displacement occur between the lifting platform and the upper oil cylinder. By opening the second receiving groove on the inner wall of the mounting hole, the up and down relative displacement between the upper oil cylinder and the lifting platform will not be affected. By setting the cross-section of the second receiving groove to an inverted Ω shape, the second ball can be prevented from falling off from the second receiving groove. By providing at least two second receiving grooves, the stability of the upper oil cylinder and the lifting platform during up and down relative displacement can be improved.

[0018] Furthermore, a motor is vertically installed on the top surface of the top plate, and a first rotating shaft and a second rotating shaft are vertically rotatably provided on the top surface of the top plate, and a first gear is coaxially fixed on the output shaft of the motor, a second gear and a third gear are coaxially fixed on the first rotating shaft, and a fourth gear is coaxially fixed on the second rotating shaft, the first gear is meshed with the second gear, and the third gear is meshed with the fourth gear, and an outer ring gear is rotatably provided on the top surface of the top plate, the fourth gear is meshed with the outer ring gear, and the outer ring gear is coaxially arranged with the lifting table, and multiple groups of transmission parts are provided on the outer ring gear along its circumference to drive the lifting table to rotate, the motor can drive the first gear to rotate, the first gear can drive the second gear to rotate, the second gear can drive the third gear to rotate through the first rotating shaft, the third gear can drive the fourth gear to rotate, the fourth gear can drive the outer ring gear to rotate, and the outer ring gear can drive the lifting table to rotate through the transmission part, thereby realizing the use of the motor to drive the lifting table to rotate, so that the lifting table can be raised and lowered, thereby driving the upper oil cylinder to rise and fall as a whole.

[0019] The two vertical rods are fixed on the outer gear ring in a vertical direction, and the cross rod is fixed on the lifting platform in a diameter direction of the lifting platform and extends between the two vertical rods. The cross rod is located above the outer gear ring, and a reinforcement ring is coaxially provided above the lifting platform. The top ends of the vertical rods are fixed to the reinforcement ring, and a cross rod is clamped in the middle by the two vertical rods. The rotation of the outer gear ring can drive the two vertical rods to rotate, and the vertical rod can toggle the cross rod to rotate, further driving the lifting platform to rotate. The rotation of the lifting platform will drive the cross rod to rise and fall, and the vertical rod is set in the vertical direction. During the lifting process, the cross rod can still be located between the two vertical rods. During the lifting process, the outer gear ring can still toggle the cross rod through the vertical rod, thereby driving the lifting platform to rotate.

[0020] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a frame for installing a lifting table and an upper oil cylinder. The lifting table is threadedly connected to the top plate. The lifting table can be raised or lowered by rotating the lifting table, thereby driving the upper oil cylinder to rise or fall. The upper oil cylinder can apply pressure to the sample and press the sample against the bottom plate, thereby providing a high-pressure environment. In combination with the heating structure in the prior art, an extreme experimental condition of ultra-high temperature and high pressure can be provided for geological experimental research, such as simulating the reaction transformation of crustal rocks, the synthesis of superhard materials or new materials, and compression testing under ultra-high temperature and high pressure conditions.

[0021] (2) The present invention connects the lifting table to the top plate by threading, so that when the lifting table rotates, it can drive the upper oil cylinder to move up and down, thereby quickly adjusting the piston height of the upper oil cylinder, speeding up the sample loading and pressure release stages, and because the piston height of the upper oil cylinder can be adjusted by rotating the lifting table, the upper oil cylinder does not need a manual mode, and only has an automatic mode to meet the use requirements, which can effectively reduce the length of the upper oil cylinder, thereby reducing the height of the entire device, which is conducive to the miniaturization of the device; (3) The present invention rotatably connects the upper oil cylinder with the lifting table so that when the lifting table rotates, the upper oil cylinder does not need to rotate with the lifting table. The upper oil cylinder can be lifted and lowered only by the lifting table without rotating with the lifting table. Therefore, it is beneficial to the oil circuit connection between the upper oil cylinder and the hydraulic station. The upper oil cylinder can be connected to the hydraulic station through multiple oil circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a high-temperature and high-pressure device for geological research in this embodiment; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3This is a diagram showing the position relationship between the lifting platform and the upper oil cylinder in this embodiment; In the figure: 1. frame; 101. bottom plate; 102. top plate; 103. pull rod; 2. lifting table; 201. mounting hole; 202. mounting groove; 203. mounting ring; 204. first ball; 205. first receiving groove; 206. second ball; 207. second receiving groove; 3. upper cylinder; 4. sliding sleeve; 5. connecting rod; 6. motor; 7. first rotating shaft; 8. second rotating shaft; 9. first gear; 10. second gear; 11. third gear; 12. fourth gear; 13. outer gear ring; 14. transmission part; 1401. vertical rod; 1402. horizontal rod; 15. sleeve; 16. oil circuit connecting groove; 17. lower cylinder; 18. reinforcement ring. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-3 As shown, this embodiment provides a high-temperature and high-pressure device for geological research, including: a frame 1, a lifting platform 2 and an upper oil cylinder 3.

[0025] like Figure 1 As shown, the frame 1 includes a bottom plate 101 and a top plate 102 arranged in a horizontal direction. The bottom plate 101 is fixedly connected to the bottom plate 101. The bottom plate 101 and the top plate 102 can be circular metal plates or square metal plates.

[0026] like Figure 1 and Figure 3 As shown, the lifting platform 2 is arranged in the vertical direction and is located in the center of the top plate 102. The lifting platform 2 passes through the top plate 102 and is threadedly connected to the top plate 102. In this embodiment, the lifting platform 2 can be cylindrical. In this embodiment, a threaded hole can be opened at the center of the top plate 102, and a thread can be set on the outer periphery of the lifting platform 2. The threaded connection between the lifting platform 2 and the top plate 102 is achieved through the threaded connection between the thread and the threaded hole. In this embodiment, the thread set on the outer periphery of the lifting platform 2 can be a trapezoidal thread. By setting the trapezoidal thread on the outer periphery of the lifting platform 2, the trapezoidal thread can withstand a larger force, so that the force of the upper oil cylinder 3 can be smoothly transmitted to the top plate 102 through the lifting platform 2, and the trapezoidal thread can be self-locking, and it is difficult for the lifting platform 2 to rotate due to the pressure exerted by the upper oil cylinder 3 on the sample.

[0027] The upper oil cylinder 3 is coaxially arranged with the lifting platform 2 and is rotatably connected.

[0028] The present invention provides a frame 1 for installing a lifting platform 2 and an upper oil cylinder 3. The lifting platform 2 is threadedly connected to the top plate 102. The lifting platform 2 can be raised or lowered by rotating the lifting platform 2, thereby driving the upper oil cylinder 3 to rise or fall. The upper oil cylinder 3 can apply pressure to the sample and press the sample against the bottom plate 101, thereby providing a high-pressure environment. Combined with the heating structure in the prior art, it can provide an extreme experimental condition of ultra-high temperature and high pressure for geological experimental research, such as simulating the reaction transformation of crustal rocks, or conducting compression tests on superhard materials under ultra-high temperature conditions.

[0029] The present invention connects the lifting table 2 with the top plate 102 by threading, so that when the lifting table 2 rotates, the upper oil cylinder 3 can be driven to rise and fall, thereby quickly adjusting the piston height of the upper oil cylinder 3, speeding up the sample loading and pressure release stages. Moreover, because the piston height of the upper oil cylinder 3 can be adjusted by rotating the lifting table 2, the upper oil cylinder 3 does not need a manual mode, and only an automatic mode can meet the use requirements, which can effectively reduce the length of the upper oil cylinder 3, thereby reducing the height of the entire device, which is conducive to the miniaturization of the device. The present invention rotatably connects the upper oil cylinder 3 with the lifting platform 2 so that when the lifting platform 2 rotates, the upper oil cylinder 3 does not need to rotate with the lifting platform 2. The upper oil cylinder 3 can only be lifted and lowered by the lifting platform 2 without rotating with the lifting platform 2. Therefore, it is beneficial to the oil circuit connection between the upper oil cylinder 3 and the hydraulic station. The upper oil cylinder 3 can be connected to the hydraulic station through multiple oil circuits.

[0030] In this embodiment, in order to facilitate the oil circuit connection between the upper cylinder 3 and the hydraulic station, a sleeve 15 can be sleeved on the outer periphery of the upper cylinder 3. The sleeve 15 is coaxially arranged with the upper cylinder 3, and an oil circuit connection groove 16 for oil circuit connection is opened on the inner wall of the sleeve 15. For example, when the upper cylinder 3 is connected to the hydraulic station through two oil circuits, the two oil circuit interfaces of the upper cylinder 3 are generally located on the upper side and the lower side respectively. The oil circuit pipelines connecting the upper cylinder 3 and the hydraulic station can be connected to the upper cylinder 3 through the oil circuit connection groove 16.

[0031] In this embodiment, a lower oil cylinder 17 may be further provided on the bottom plate 101 , and the sample is placed between the upper oil cylinder 3 and the lower oil cylinder 17 , and pressure is applied to the sample from both the top and bottom surfaces for pressure testing of the sample.

[0032] In this embodiment, a pressure chamber for accommodating samples can be provided between the upper oil cylinder 3 and the lower oil cylinder 17. A heating component can be provided in the pressure chamber to provide a high-temperature and high-pressure environment. The pressure chamber and the heating component provided in the pressure chamber belong to the prior art and are not described in detail in this embodiment.

[0033] Furthermore, the top plate 102 and the bottom plate 101 are fixed by multiple vertically arranged tie rods 103, the top ends of the tie rods 103 are fixedly connected to the top plate 102, and the bottom ends of the tie rods 103 are fixed to the bottom plate 101; the arranged tie rods 103 are used to fix the top plate 102 and the bottom plate 101.

[0034] In this embodiment, the top plate 102 and the bottom plate 101 can be fixed by three tie rods 103 ( Figure 1 Only two tie rods 103 are drawn in the figure, because three tie rods 103 have better stability, and both ends of the tie rods 103 can be fixed to the top plate 102 and the bottom plate 101 respectively by nuts. For example, the top end of the tie rod 103 passes through the top plate 102, and two nuts are used to fix the top plate 102 and the tie rod 103 from the upper and lower surfaces of the top plate 102. The bottom end of the tie rod 103 passes through the bottom plate 101, and two nuts are used to fix the bottom plate 101 and the tie rod 103 from the upper and lower surfaces of the bottom plate 101.

[0035] Further, if Figure 1 As shown, multiple pull rods 103 are each provided with a sliding sleeve 4, and multiple sliding sleeves 4 are fixedly connected to the upper cylinder 3 through the connecting rod 5. The upper cylinder 3 is slidably connected to the pull rod 103 through the connecting rod 5 and the sliding sleeve 4. The pull rod 103 can guide the upper cylinder 3 to rise and fall, so that the upper cylinder 3 can run more stably during the lifting process. The upper cylinder 3 and the pull rod 103 are not coaxial, so the pull rod 103 can also limit the rotation of the upper cylinder 3, so that the upper cylinder 3 can only be lifted and lowered by the lifting table 2 without rotating. The non-rotation of the upper cylinder 3 is conducive to the oil circuit connection between the upper cylinder 3 and the hydraulic station.

[0036] Further, if Figure 1 and Figure 3 As shown, a mounting hole 201 is coaxially opened on the bottom surface of the lifting platform 2, and an annular mounting groove 202 is opened along the circumference of the hole wall of the mounting hole 201. A mounting ring 203 is coaxially fixed to the lower part of the upper oil cylinder 3, and the mounting ring 203 extends into the mounting groove 202 so that the upper oil cylinder 3 is rotatably connected to the lifting platform 2. By opening the mounting hole 201 on the bottom surface of the lifting platform 2 and rotatably installing the upper oil cylinder 3 in the mounting hole 201, the internal space of the lifting platform 2 can be fully utilized, so that the lifting platform 2 and the upper oil cylinder 3 partially overlap in height. , which can effectively reduce the overall height of the device and is conducive to the miniaturization of the device; by opening a mounting groove 202 on the mounting hole 201 and setting a mounting ring 203 on the upper oil cylinder 3, the upper oil cylinder 3 can be rotatably installed in the mounting hole 201. By setting the installation method, the bottom end of the upper oil cylinder 3 can be flush with the bottom end of the lifting platform 2, or the bottom end of the upper oil cylinder 3 can extend outside the mounting hole 201, which can avoid the lifting platform 2 occupying the space between the upper oil cylinder 3 and the sample, thereby further reducing the height of the entire device.

[0037] Further, if Figure 1 and Figure 3 As shown, when the bottom surface of the mounting ring 203 is pressed against the lower side surface of the mounting groove 202, a gap is left between the upper oil cylinder 3 and the bottom surface of the mounting hole 201. When the upper oil cylinder 3 does not contact the sample, under the action of gravity, the bottom surface of the mounting ring 203 will be pressed against the lower side surface of the mounting groove 202. In this case, when the lifting table 2 is rotated, the top surface of the upper oil cylinder 3 does not directly contact the bottom surface of the mounting hole 201, which can avoid friction between the top surface of the upper oil cylinder 3 and the bottom surface of the mounting hole 201, and avoid wear of the top surface of the upper oil cylinder 3 and the bottom surface of the mounting hole 201 due to friction. Uneven wear may cause the coaxiality between the lifting table 2 and the upper oil cylinder 3 to deteriorate, thereby affecting the transmission of force of the entire device.

[0038] Further, if Figure 1 and Figure 3 As shown, when the bottom surface of the mounting ring 203 is pressed against the lower side surface of the mounting groove 202, the distance from the top surface of the mounting ring 203 to the upper side surface of the mounting groove 202 is greater than the distance from the upper oil cylinder 3 to the bottom surface of the mounting hole 201. Before the upper oil cylinder 3 contacts the sample, the upper oil cylinder 3 will press the bottom surface of the mounting ring 203 against the lower side surface of the mounting groove 202 under the action of gravity. After the upper oil cylinder 3 contacts the sample, when the lifting table 2 continues to descend, the sample will support the upper oil cylinder 3 and prevent the upper oil cylinder 3 from continuing to descend. Because when the bottom surface of the mounting ring 203 is pressed against the lower side surface of the mounting groove 202, the distance from the top surface of the mounting ring 203 to the upper side surface of the mounting groove 202 is greater than the distance from the upper oil cylinder 3 to the bottom surface of the mounting hole 201. The distance is greater than the distance from the upper oil cylinder 3 to the bottom surface of the mounting hole 201. Therefore, when the upper oil cylinder 3 is supported by the sample and the lifting table 2 continues to descend, the upper oil cylinder 3 will slowly approach the bottom surface of the mounting hole 201, and finally the top surface of the upper oil cylinder 3 will hit the bottom surface of the mounting hole 201. When the top surface of the upper oil cylinder 3 hits the bottom surface of the mounting hole 201, there is still a distance between the top surface of the mounting ring 203 and the upper side surface of the mounting groove 202. The upper oil cylinder 3 only transmits the vertical force to the lifting table 2 through the bottom surface of the mounting hole 201, which can avoid the upper oil cylinder 3 transmitting the vertical force to the lifting table 2 through the mounting ring 203, thereby causing damage to the mounting ring 203.

[0039] When the bottom surface of the mounting ring 203 is pressed against the lower side surface of the mounting groove 202, the distance from the top surface of the mounting ring 203 to the upper side surface of the mounting groove 202 is greater than the distance from the upper oil cylinder 3 to the bottom surface of the mounting hole 201, which can also avoid friction between the top surface of the mounting ring 203 and the upper side surface of the mounting groove 202, so that the lifting table 2 can rotate more smoothly.

[0040] Further, if Figure 1 and Figure 3As shown, several first balls 204 for reducing friction are provided between the bottom surface of the mounting ring 203 and the lower side surface of the mounting groove 202. A first receiving groove 205 for receiving the first balls 204 is coaxially opened on the bottom surface of the mounting ring 203. The cross section of the first receiving groove 205 is an inverted Ω shape. By setting the cross section of the first receiving groove 205 to an inverted Ω shape, the first balls 204 can be prevented from falling out of the first receiving groove 205 when the upper cylinder 3 approaches the bottom surface of the mounting hole 201.

[0041] Further, if Figure 1 and Figure 3 As shown, several second balls 206 for reducing friction are provided between the outer peripheral wall of the upper oil cylinder 3 and the inner wall of the mounting hole 201, and at least two second accommodating grooves 207 for accommodating the second balls 206 are coaxially opened from top to bottom on the inner wall of the mounting hole 201. The cross section of the second accommodating groove 207 is an inverted Ω shape. Through the provided second balls 206, the friction between the inner wall of the mounting hole 201 and the outer periphery of the upper oil cylinder 3 can be effectively reduced when relative rotation and relative up and down displacement occur between the lifting platform 2 and the upper oil cylinder 3. By opening the second accommodating grooves 207 on the inner wall of the mounting hole 201, the up and down relative displacement between the upper oil cylinder 3 and the lifting platform 2 can be not affected. By setting the cross section of the second accommodating grooves 207 to an inverted Ω shape, the second balls 206 can be prevented from falling out of the second accommodating grooves 207. By providing at least two second accommodating grooves 207, the stability of the upper oil cylinder 3 and the lifting platform 2 during up and down relative displacement can be improved.

[0042] In this embodiment, if Figure 1 and Figure 3 As shown, the mounting groove 202 can be opened below the second accommodating groove 207, which is convenient for the processing of the lifting platform 2 and for installing the mounting ring 203 into the mounting groove 202. In order to install the mounting ring 203 into the mounting groove 202, a part of the bottom end of the lifting platform 2 can be cut off. After cutting, a circle of annular steps can be opened at the mouth of the mounting hole 201. After installing the mounting ring 203 into the annular step, the cut part can be welded back to complete the opening of the mounting groove 202 and the installation of the mounting ring 203. The cut part only needs to be able to withstand the weight of the upper cylinder 3, and its structural strength requirements are not high.

[0043] Further, if Figure 1 and Figure 2As shown, the top surface of the top plate 102 is vertically mounted with a motor 6, and the top surface of the top plate 102 is vertically rotatably provided with a first rotating shaft 7 and a second rotating shaft 8. A first gear 9 is coaxially fixed to the output shaft of the motor 6, a second gear 10 and a third gear 11 are coaxially fixed to the first rotating shaft 7, and a fourth gear 12 is coaxially fixed to the second rotating shaft 8. The first gear 9 is engaged with the second gear 10, and the third gear 11 is engaged with the fourth gear 12. An outer gear ring 13 is rotatably provided on the top surface of the top plate 102, and the fourth gear 12 is engaged with the outer gear ring 13. The outer gear ring 13 is coaxially arranged with the lifting table 2, and the outer diameter of the lifting table 2 is smaller than that of the outer gear ring 13. The inner diameter of the ring gear 13, and multiple groups of transmission parts 14 are provided on the outer ring gear 13 along its circumference to drive the lifting table 2 to rotate. The motor 6 can drive the first gear 9 to rotate, and the first gear 9 can drive the second gear 10 to rotate. The second gear 10 can drive the third gear 11 to rotate through the first rotating shaft 7, and the third gear 11 can drive the fourth gear 12 to rotate. The fourth gear 12 can drive the outer ring gear 13 to rotate. The outer ring gear 13 can drive the lifting table 2 to rotate through the transmission parts 14, thereby realizing the use of the motor 6 to drive the lifting table 2 to rotate, so that the lifting table 2 can be lifted and lowered, thereby driving the upper cylinder 3 to lift as a whole.

[0044] Specifically, if Figure 2 As shown, the transmission member 14 includes two vertical rods 1401 and a cross rod 1402. The two vertical rods 1401 are fixed on the outer gear ring 13 in the vertical direction. The cross rod 1402 is fixed on the lifting platform 2 along the diameter direction of the lifting platform 2 and extends between the two vertical rods 1401. The cross rod 1402 is located above the outer gear ring 13. A reinforcement ring 18 is coaxially provided above the lifting platform 2. The top of the vertical rod 1401 is fixed to the reinforcement ring 18. The cross rod 1402 is clamped in the middle by the two vertical rods 1401. The rotation of the gear ring 13 can drive the two vertical rods 1401 to rotate, and the vertical rod 1401 can drive the horizontal rod 1402 to rotate, further driving the lifting platform 2 to rotate. The rotation of the lifting platform 2 will drive the horizontal rod 1402 to rise and fall, and the vertical rod 1401 is arranged in the vertical direction. During the lifting process, the horizontal rod 1402 can still be located between the two vertical rods 1401. During the lifting process of the horizontal rod 1402, the outer gear ring 13 can still drive the horizontal rod 1402 through the vertical rod 1401, thereby driving the lifting platform 2 to rotate.

[0045] It should be noted that although the present invention is disclosed above with specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A high-temperature and high-pressure device for geological research, characterized in that: include: A frame body, the frame body comprising a bottom plate and a top plate arranged in a horizontal direction, the bottom plate being fixedly connected to the top plate; A lifting platform is arranged in the vertical direction, the lifting platform passes through the top plate and is threadedly connected to the top plate; The upper oil cylinder is coaxially arranged with the lifting platform and is rotatably connected thereto.

2. The high-temperature and high-pressure device for geological research according to claim 1, characterized in that: The top plate and the bottom plate are fixed via a plurality of vertically arranged tie rods, the top ends of the tie rods are fixedly connected to the top plate, and the bottom ends of the tie rods are fixed to the bottom plate.

3. The high-temperature and high-pressure device for geological research according to claim 2, characterized in that: A plurality of pull rods are sleeved with sliding sleeves, and the plurality of sliding sleeves are fixedly connected to the upper oil cylinder via connecting rods.

4. The high-temperature and high-pressure device for geological research according to claim 1, characterized in that: A mounting hole is coaxially opened on the bottom surface of the lifting platform, and an annular mounting groove is opened on the hole wall along its circumference. A mounting ring is coaxially fixed to the lower part of the upper oil cylinder, and the mounting ring extends into the mounting groove to enable the upper oil cylinder to be rotatably connected to the lifting platform.

5. The high-temperature and high-pressure device for geological research according to claim 4, characterized in that: When the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, a gap is left between the upper oil cylinder and the bottom surface of the mounting hole.

6. The high-temperature and high-pressure device for geological research according to claim 5, characterized in that: When the bottom surface of the mounting ring is pressed against the lower side surface of the mounting groove, the distance from the top surface of the mounting ring to the upper side surface of the mounting groove is greater than the distance from the upper oil cylinder to the bottom surface of the mounting hole.

7. The high-temperature and high-pressure device for geological research according to claim 4, characterized in that: Several first balls for reducing friction are provided between the bottom surface of the mounting ring and the lower side surface of the mounting groove. A first receiving groove for accommodating the first balls is coaxially opened on the bottom surface of the mounting ring. The cross section of the first receiving groove is in an inverted Ω shape.

8. The high-temperature and high-pressure device for geological research according to claim 4, characterized in that: Several second balls for reducing friction are provided between the outer wall of the upper oil cylinder and the inner wall of the mounting hole. At least two second receiving grooves for accommodating the second balls are coaxially opened from top to bottom on the inner wall of the mounting hole. The cross-section of the second receiving groove is an inverted Ω shape.

9. The high-temperature and high-pressure device for geological research according to claim 1, characterized in that: A motor is vertically installed on the top surface of the top plate, and a first rotating shaft and a second rotating shaft are vertically rotatably provided on the top surface of the top plate. A first gear is coaxially fixed on the output shaft of the motor, a second gear and a third gear are coaxially fixed on the first rotating shaft, and a fourth gear is coaxially fixed on the second rotating shaft. The first gear is meshed with the second gear, and the third gear is meshed with the fourth gear. An outer gear ring is rotatably provided on the top surface of the top plate, and the fourth gear is meshed with the outer gear ring. The outer gear ring is coaxially arranged with the lifting platform, and a plurality of transmission parts are provided on the outer gear ring along its circumference to drive the lifting platform to rotate.

10. The high-temperature and high-pressure device for geological research according to claim 9, characterized in that: The transmission member includes two vertical rods and a cross rod. The two vertical rods are fixed on the outer gear ring along the vertical direction. The cross rod is fixed on the lifting platform along the diameter direction of the lifting platform and extends between the two vertical rods. The cross rod is located above the outer gear ring. A reinforcement ring is coaxially provided above the lifting platform, and the top end of the vertical rod is fixed to the reinforcement ring.

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