A portable polar sea ice core rapid sampling device and method

Abstract

The application relates to the sampling technical field and discloses a portable polar sea ice core rapid sampling device and method, which comprises a positioning frame. The sampling cutting plate is provided with a composite motion, feeds to the ice layer through self-rotation, is more efficient than traditional drilling, and can quickly complete ice core cutting; when the cutting plate is attached, the arc-shaped track automatically separates the bottom of the ice core from the ice layer, avoiding damage caused by secondary separation; meanwhile, when the vertical rod slides to the slope along the arc-shaped guide rail, the thrust drives the synchronous block to move upwards, the sampling cutting plate automatically carries the ice core to separate from the ice surface, realizes overall separation, does not need manual intervention, guarantees the continuity and stability of sampling, reduces manual operation cost, and through cooperation of the composite motion and the automatic structure, the efficiency and reliability of the polar ice core sampling are optimized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sampling, and relates to a portable polar sea ice core rapid sampling device and method. BACKGROUND

[0002] In polar sea ice research, ice core sampling is a key means to obtain important information such as the physical and chemical properties of sea ice.

[0003] At present, most of the traditional ice core sampling methods adopt drilling sampling method, and in the ice core separation link, after the traditional drilling sampling, the ice core needs to be separated from the ice layer by manual or additional tools, which can easily cause the ice core to be broken again. Once the ice core is damaged, the subsequent detection result is affected. Moreover, the operation of separating the ice core from the ice surface mostly depends on manual pulling or auxiliary tools, and in the polar extreme low temperature, the hand flexibility of the operator will be greatly reduced due to the cold, so that the manual operation is extremely inconvenient, low in efficiency, and difficult to ensure the uniformity and stability of the force. If the ice core cannot be taken out in time, the newly generated ice slag and melted ice water will be quickly re-frozen in the low temperature, so that the ice core is again adhered to the ice layer, further increasing the difficulty of separating the ice core, and easily causing poor sampling continuity, and even causing the ice core to drop and break.

[0004] Therefore, the application is proposed. SUMMARY

[0005] To solve the above technical problems, the basic idea of the technical scheme of the application is:

[0006] A portable polar sea ice core rapid sampling device, comprising a positioning frame.

[0007] The bottom of the positioning frame is rotatably provided with a synchronous block, a driving motor is installed on the positioning frame, and the driving motor is used to drive the synchronous block to rotate, a pair of rocker arms are rotatably installed at the bottom of the synchronous block, and sampling cutting plates are installed at the ends of the rocker arms, and the sampling cutting plates are arc-shaped.

[0008] A spiral guide rail is installed at the bottom of the positioning frame, a vertical rod that can slide horizontally on the surface of the synchronous block is arranged on the spiral guide rail, a connecting plate is installed on the rocker arm, the connecting plate is slidably connected with the output end of the vertical rod, the vertical rod slides along the spiral guide rail, pushes the sampling cutting plate to the surface of the glacier and cuts the surface of the glacier, and when the vertical rod slides to the end of the spiral guide rail, the cutting is completed.

[0009] An arc guide rail is installed at the end of the spiral guide rail, and a slope is formed on the surface of the arc guide rail, the vertical rod slides to the slope to pull the synchronous block to move upward, thereby separating the cut ice core from the glacier and completing the sampling operation.

[0010] As a preferred embodiment of the present application, supporting legs are installed at the four corners of the positioning frame, universal wheels are installed at the bottom of the supporting legs, reinforcing ribs are installed between adjacent supporting legs, hydraulic push rods are vertically installed on the side walls of the supporting legs, and push plates are installed at the output ends of the hydraulic push rods, which are used to lift the positioning frame and ensure the stability of the positioning frame.

[0011] As a preferred embodiment of the present application, a circular plate is fixedly installed at the bottom of the positioning frame, a connecting frame is installed on the circular plate, the connecting frame is L-shaped, the connecting frame overlaps above the positioning frame, the connecting frame and the positioning frame are connected by screwing, the bottom of the circular plate is connected with the spiral guide rail and the circular arc guide rail, and the center of curvature of the circular arc guide rail coincides with the center of the circular plate.

[0012] As a preferred embodiment of the present application, an installation plate is installed at the bottom of the positioning frame, a vertical plate is installed at the bottom of the installation plate, the vertical plate and the installation plate form a T shape, a reinforcing plate is installed at the connection between the vertical plate and the installation plate, the reinforcing plate is triangular, a side plate is installed on the side wall of the vertical plate, a sliding groove is formed in the side plate, a positioning plate is slidably arranged in the sliding groove, the positioning plate is slidably connected with a synchronous block, a notch is formed in the positioning plate, and a connecting plate penetrates through the notch.

[0013] As a preferred embodiment of the present application, a through slot is formed in the positioning plate, the synchronous block is inserted into the through slot, the synchronous block is inserted into the through slot, the synchronous block and the through slot are mutually adapted, and the synchronous block and the through slot are both rectangular, a limiting plate is installed at the bottom of the through slot, and the synchronous block overlaps on the limiting plate.

[0014] As a preferred embodiment of the present application, a sliding rod is installed on the positioning plate, a sliding plate is slidably arranged on the sliding rod, the sliding plate and the surface of the synchronous block are connected with each other, a top plate is installed at the top of the sliding rod, a reset spring is sleeved on the sliding rod, one end of the reset spring is clamped on the sliding plate, and the other end of the reset spring is clamped on the bottom of the top plate.

[0015] As a preferred embodiment of the present application, a cross shaft is installed at the top of the synchronous block, a plug shaft is installed at the output end of the driving motor, the plug shaft movably penetrates through the positioning frame, and the plug shaft movably inserts into the cross shaft.

[0016] As a preferred embodiment of the present application, a positioning seat is installed at the bottom of the synchronous block, a positioning shaft is rotatably installed on the positioning seat, the positioning shaft and the rocker arm are connected with each other, the sampling and cutting plate is arc-shaped, the center of curvature of the sampling and cutting plate coincides with the positioning shaft, and the sampling and cutting plate is provided with sawteeth at the end.

[0017] As a preferred embodiment of the present application, the top of the vertical rod is provided with a sliding block, the sliding block is in sliding connection with a spiral guide rail, the bottom of the vertical rod is provided with a fixed plate, the fixed plate is provided with a protrusion, the connecting plate is provided with a strip-shaped slot, the protrusion is in sliding connection with the strip-shaped slot, the side wall of the vertical rod is provided with a limiting block, the limiting block is movably penetrated and connected with a limiting rod, one end of the limiting rod is provided with a limiting seat, and the limiting seat is arranged on the synchronous block.

[0018] As a preferred embodiment of the present application, the sampling method of the portable polar sea ice core rapid sampling device comprises the following steps:

[0019] Step one: move the device to the target ice surface through the universal wheels arranged at the bottom of the supporting legs, start the hydraulic push rod, the piston rod drives the push plate with anti-skid patterns to press the ice surface, the universal wheels are separated from the ice surface, and the device is fixed;

[0020] Step two: start the driving motor, the inserting shaft on the output shaft of the driving motor is clamped with the cross shaft at the top of the synchronous block, the synchronous block is driven to rotate, the positioning shaft on the positioning seat at the bottom of the synchronous block drives the rocker arm to rotate, the sampling cutting plate at the end is in arc shape and is provided with sawteeth, the sampling cutting plate rotates on the surface of the ice layer in a circle, at the same time, the vertical rod and the sliding block on the synchronous block slide on the spiral guide rail, the cooperation between the protrusion on the side wall of the vertical rod and the strip-shaped slot of the connecting plate makes the sampling cutting plate slide and cut into the ice layer along the spiral guide rail, and the ice core cutting is completed;

[0021] Step three: when the vertical rod slides to the circular arc guide rail coinciding with the curvature of the center of the circular plate, the pushing force of the slope at the end of the circular arc guide rail drives the synchronous block to move upward through the limiting block and the limiting rod, when the synchronous block moves upward, the positioning seat drives the rocker arm to lift upward, and the sampling cutting plate carries the ice core to separate from the surface of the ice layer;

[0022] Step four: the driving motor is reversed, the elastic potential energy of the compressed reset spring on the sliding rod is released, the sliding plate and the synchronous block are reset downward, the sampling cutting plate returns to the initial position, and the ice core sampling operation is completed.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The present application is provided with a sampling cutting plate, the sampling cutting plate is in combined motion of self-rotation and feeding to the ice layer, is more efficient than traditional drilling, and can quickly complete ice core cutting; when the cutting plate is attached, the arc trajectory makes the bottom of the ice core automatically separate from the ice layer, avoids damage caused by secondary separation, at the same time, when the vertical rod slides along the circular arc guide rail to the slope, the pushing force drives the synchronous block to move upward, the sampling cutting plate automatically carries the ice core to separate from the ice surface, realizes overall separation, and does not need manual intervention, which not only guarantees the continuity and stability of sampling, but also reduces the labor operation cost, the design cooperates the combined motion and the automatic structure, optimizes the efficiency and reliability of the polar ice core sampling.

[0025] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0026] In the attached diagram:

[0027] Figure 1 A 3D diagram of a portable rapid sampling device for polar sea ice cores;

[0028] Figure 2 A side view of a portable rapid sampling device for polar sea ice cores;

[0029] Figure 3 A partial view of a portable rapid sampling device for polar sea ice cores Figure 1 ;

[0030] Figure 4 A portable rapid sampling device for polar sea ice cores Figure 3 Front view;

[0031] Figure 5 A partial view of a portable rapid sampling device for polar sea ice cores Figure 2 ;

[0032] Figure 6 A partial view of a portable rapid sampling device for polar sea ice cores Figure 3 ;

[0033] Figure 7 A partial view of a portable rapid sampling device for polar sea ice cores Figure 4 ;

[0034] Figure 8 A structural diagram of the synchronization block of a portable rapid sampling device for polar sea ice cores;

[0035] Figure 9 A cross-sectional view of the positioning plate of a portable rapid sampling device for polar sea ice cores;

[0036] Figure 10 This is a diagram showing the connection of a pole for a portable rapid sampling device for polar sea ice cores.

[0037] In the diagram: 1. Positioning frame; 11. Support leg; 111. Caster wheel; 112. Reinforcing rib; 113. Hydraulic push rod; 114. Push plate; 12. Circular plate; 121. Connecting frame; 13. Vertical plate; 131. Side plate; 132. Mounting plate; 133. Reinforcing plate; 134. Positioning plate; 135. Slide groove;

[0038] 2, synchronous block; 21, positioning seat; 211, positioning shaft; 22, sampling cutting plate; 221, sawtooth; 222, rocker arm; 23, cross shaft; 231, insertion shaft; 232, driving motor; 24, sliding plate; 241, sliding rod; 242, top plate; 243, return spring; 25, limiting plate; 251, through slot;

[0039] 3, spiral guide rail; 31, circular arc guide rail; 311, slope; 32, vertical rod; 321, sliding block; 322, fixed plate; 323, protrusion; 33, connecting plate; 331, strip-shaped slot; 332, notch; 34, limiting block; 341, limiting rod; 342, limiting seat. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and the following embodiments are used to illustrate the present application.

[0041] Embodiment 1:

[0042] As shown in the drawings, a portable polar sea ice core rapid sampling device comprises a positioning frame 1. Figures 1 to 10

[0043] The positioning frame 1 is rotatably installed at the bottom with a synchronous block 2, and a driving motor 232 is installed on the positioning frame 1 and is used to drive the synchronous block 2 to rotate. The synchronous block 2 is rotatably installed at the bottom with a pair of rocker arms 222, and each rocker arm 222 is installed at the end with a sampling cutting plate 22, and the sampling cutting plate 22 is arc-shaped. In this structure, the driving motor 232 drives the synchronous block 2 to rotate, and the synchronous block 2 drives the rocker arms 222 and the sampling cutting plate 22 to rotate, providing a power basis for ice core cutting, so that the sampling cutting plate 22 can cut the ice surface in a circular motion.

[0044] The positioning frame 1 is installed at the bottom with a spiral guide rail 3, and the spiral guide rail 3 is slidably provided with a vertical rod 32 that slides horizontally on the surface of the synchronous block 2. The connecting plate 33 is installed on the rocker arm 222 and is slidably connected with the output end of the vertical rod 32. The vertical rod 32 slides along the spiral guide rail 3, pushes the sampling cutting plate 22 towards the ice surface and cuts the ice surface. When the vertical rod 32 slides to the end of the spiral guide rail 3, the cutting is completed. Through the sliding of the vertical rod 32 on the spiral guide rail 3, the linear motion of the vertical rod 32 is converted into the cutting motion of the sampling cutting plate 22 towards the ice surface by cooperating with the connecting plate 33, so as to realize the gradual cutting of the ice core. Compared with the single cutting mode, this structure can more efficiently and stably complete the ice core cutting work.

[0045] ​The spiral guide rail 3 has an arc-shaped guide rail 31 installed at its end, and the surface of the arc-shaped guide rail 31 has a ramp 311. When the upright rod 32 slides to the ramp 311, it pulls the synchronous block 2 upward, thereby causing the cut ice core to separate from the glacier and completing the sampling operation. The design of the arc-shaped guide rail 31 and the ramp 311 allows the upright rod 32 to slide on the ramp 311 after the ice core is cut, thereby causing the synchronous block 2 to move upward and achieving automatic separation of the ice core without much manual intervention, thus improving sampling efficiency and convenience.

[0046] like Figures 1 to 10 As shown, in a specific embodiment, support legs 11 are installed at the four corners of the positioning frame 1. Universal wheels 111 are installed at the bottom of each support leg 11. Reinforcing ribs 112 are installed between adjacent support legs 11. Hydraulic push rods 113 are vertically installed on the side walls of the support legs 11. A push plate 114 is installed at the output end of the hydraulic push rod 113. The hydraulic push rod 113 is used to lift the positioning frame 1, ensuring its stability. The universal wheels 111 facilitate device movement, and the reinforcing ribs 112 enhance the structural strength of the support legs 11. The hydraulic push rod 113 drives the push plate 114 to lift the positioning frame 1, causing the universal wheels 111 to detach from the ice surface, ensuring the device's stability during sampling and preventing the sampling effect from being affected by device shaking.

[0047] like Figures 1 to 10 As shown, furthermore, a circular plate 12 is fixedly installed at the bottom of the positioning frame 1, and a connecting frame 121 is installed on the circular plate 12. The connecting frame 121 is L-shaped and overlaps the positioning frame 1. The connecting frame 121 and the positioning frame 1 are connected by bolts. The bottom of the circular plate 12 is connected to the spiral guide rail 3 and the arc guide rail 31. The curvature center of the arc guide rail 31 coincides with the center of the circular plate 12. The circular plate 12 and the connecting frame 121 are set up to firmly connect the spiral guide rail 3 and the arc guide rail 31, ensuring the stability of the guide rail structure. Moreover, the relationship between the center of the arc guide rail 31 and the circular plate 12 provides precise guidance for the movement trajectory during ice core separation.

[0048] like Figures 1 to 10As shown, further, the bottom of the positioning frame 1 is provided with a mounting plate 132, the bottom of the mounting plate 132 is provided with a vertical plate 13, the vertical plate 13 and the mounting plate 132 form a T shape, the connecting position of the vertical plate 13 and the mounting plate 132 is provided with a reinforcing plate 133, the reinforcing plate 133 is triangular, the side wall of the vertical plate 13 is provided with a side plate 131, the side plate 131 is provided with a sliding groove 135, the sliding groove 135 is slidably provided with a positioning plate 134, the positioning plate 134 is slidably connected with the synchronous block 2, the positioning plate 134 is provided with a notch 332, and the connecting plate 33 penetrates the notch 332. The vertical plate 13 and the mounting plate 132 of the T-shaped structure cooperate with the triangular reinforcing plate 133 to enhance the overall structural strength. The positioning plate 134 slides in the sliding groove 135, which not only limits the movement direction of the synchronous block 2, but also provides support for its rotation, ensuring that the synchronous block 2 drives the rocker arm 222 and the sampling and cutting plate 22 to operate stably.

[0049] Embodiment 2:

[0050] Based on the above embodiment, the difference between this embodiment and the above embodiment is that, as shown, Figures 1 to 10 The positioning plate 134 is provided with a through groove 251, the synchronous block 2 is inserted into the through groove 251, the synchronous block 2 is inserted into the through groove 251, and the synchronous block 2 and the through groove 251 are mutually adapted, and the synchronous block 2 and the through groove 251 are both rectangular, the bottom of the through groove 251 is provided with a limiting plate 25, and the bottom of the synchronous block 2 is lapped on the limiting plate 25. The design of the through groove 251 and the limiting plate 25 further precisely limits the movement of the synchronous block 2, ensures the accurate position of the synchronous block 2 during rotation and up-down movement, and improves the stability and reliability of the device operation.

[0051] As shown, Figures 1 to 10 In the specific embodiment, the positioning plate 134 is provided with a sliding rod 241, the sliding rod 241 is slidably provided with a sliding plate 24, the sliding plate 24 is connected with the surface of the synchronous block 2, the top of the sliding rod 241 is provided with a top plate 242, the sliding rod 241 is sleeved with a reset spring 243, one end of the reset spring 243 is clamped on the sliding plate 24, and the other end of the reset spring 243 is clamped on the bottom of the top plate 242. The reset spring 243 is compressed when the synchronous block 2 rises, stores elastic potential energy, and pushes the synchronous block 2 to reset after the ice core is separated, realizes the automatic return of the sampling and cutting plate 22, reduces manual operation, and improves the sampling efficiency.

[0052] As shown, Figures 1 to 10 Further, the top of the synchronous block 2 is provided with a cross shaft 23, the output end of the driving motor 232 is provided with a plug shaft 231, the plug shaft 231 movably penetrates the positioning frame 1, and the plug shaft 231 movably inserts the cross shaft 23. The plug shaft 231 and the cross shaft 23 are inserted, which realizes stable torque transmission between the driving motor 232 and the synchronous block 2, ensures that the synchronous block 2 can rotate as expected, and provides power transmission guarantee for subsequent ice core cutting and separation.

[0053] As shown in Figures 1 to 10 Further, the bottom of the synchronization block 2 is provided with a positioning seat 21, the positioning seat 21 is rotatably provided with a positioning shaft 211, the positioning shaft 211 is connected with the rocker arm 222, the sampling cutting plate 22 is arc-shaped, the curvature center of the sampling cutting plate 22 coincides with the positioning shaft 211, and the end of the sampling cutting plate 22 is provided with a sawtooth 221. The positioning seat 21 and the positioning shaft 211 are arranged, so that the rocker arm 222 can stably rotate around the positioning shaft 211, the arc-shaped sampling cutting plate 22 cooperates with the sawtooth 221, the cutting area and the cutting efficiency are increased, and meanwhile the shape of the cut ice core is regular, and subsequent research is facilitated.

[0054] Example 3:

[0055] Different from the above examples and the present example is that, as shown in Figures 1 to 10 The top of the vertical rod 32 is provided with a sliding block 321, the sliding block 321 is slidably connected with the spiral guide rail 3, the bottom of the vertical rod 32 is provided with a fixed plate 322, the fixed plate 322 is provided with a protrusion 323, the connecting plate 33 is provided with a strip-shaped slot 331, the protrusion 323 is slidably arranged on the strip-shaped slot 331, the side wall of the vertical rod 32 is provided with a limiting block 34, the limiting block 34 is movably and penetratively connected with a limiting rod 341, one end of the limiting rod 341 is provided with a limiting seat 342, and the limiting seat 342 is arranged on the synchronization block 2. The sliding block 321 cooperates with the spiral guide rail 3, so that the vertical rod 32 can slide smoothly, the protrusion 323 cooperates with the strip-shaped slot 331, so that the movement of the vertical rod 32 is accurately transmitted to the connecting plate 33 and the rocker arm 222, and the limiting block 34, the limiting rod 341 and the limiting seat 342 are arranged, so as to limit the movement range of the vertical rod 32, ensure the accurate movement track, and ensure the smooth cutting and separation of the ice core.

[0056] The application further discloses a sampling method of the portable polar sea ice core rapid sampling device.

[0057] Step one: the device is moved to the target ice surface through the universal wheel 111 arranged at the bottom of the supporting leg 11, the hydraulic push rod 113 is started, the piston rod drives the push plate 114 with anti-skid patterns to press the ice surface, the universal wheel 111 is separated from the ice surface, and the device is fixed;

[0058] Step two: start the driving motor 232, the output shaft of which is inserted into the cross shaft 23 on the top of the synchronization block 2 to drive the synchronization block 2 to rotate; the positioning shaft 211 on the bottom positioning seat 21 of the synchronization block 2 drives the rocker arm 222 to rotate, so that the sampling cutting plate 22 with the arc-shaped and sawtoothed end 221 rotates on the surface of the ice layer in a circle, at the same time, the vertical rod 32 and the sliding block 321 on the synchronization block 2 slide on the spiral guide rail 3, the cooperation between the side wall protrusion 323 of the vertical rod 32 and the strip-shaped groove 331 of the connecting plate 33 enables the sampling cutting plate 22 to slide along the spiral guide rail 3 and cut into the ice layer, and the ice core cutting is completed;

[0059] Step three: when the vertical rod 32 slides to the circular arc guide rail 31 coinciding with the center curvature of the circular plate 12, the force of the slope 311 at the end of the circular arc guide rail 31 is used to drive the synchronization block 2 to move upward through the limiting block 34 and the limiting rod 341; when the synchronization block 2 moves upward, the positioning seat 21 drives the rocker arm 222 to lift upward, so that the sampling cutting plate 22 with the ice core is separated from the surface of the ice sheet;

[0060] Step four: the driving motor 232 is reversed, the elastic potential energy of the compressed reset spring 243 on the sliding rod 241 is released, the sliding plate 24 and the synchronization block 2 are pushed downward to reset, the sampling cutting plate 22 returns to the initial position, and the ice core sampling operation is completed.

[0061] The implementation principle of the portable polar sea ice ice core rapid sampling device is as follows:

[0062] The device is moved to the target ice surface position through the universal wheel 111 installed at the bottom of the supporting leg 11; the supporting leg 11 adopts a four-corner symmetrical layout, and triangular reinforcing ribs 112 are welded between adjacent supporting legs 11 to enhance the structural rigidity and resist vibration during sampling. After reaching the specified position, the hydraulic push rod 113 (optionally, an SC series oil cylinder) is started, the piston rod of the hydraulic push rod 113 drives the push plate 114 to press downward on the ice surface, the pushing force generated by the hydraulic system lifts the positioning frame 1 as a whole, so that the universal wheel 111 is separated from the ice surface, and the anti-skid pattern on the surface of the push plate 114 can increase the friction with the ice surface, so that the device can remain stable in a low-temperature environment.

[0063] After the driving motor 232 (optionally, a low-temperature type servo motor resistant to-50 DEG C) is started, the insert shaft 231 on the output shaft penetrates through the reserved hole of the positioning frame 1 and is engaged with the four-rib structure of the cross shaft 23 on the top of the synchronization block 2 to transmit the torque to the synchronization block 2, so that the synchronization block 2 and the positioning plate 134 are finally rotated in the sliding groove 135 of the side plate 131, the positioning shaft 211 on the bottom positioning seat 21 of the synchronization block 2 drives the rocker arm 222 to rotate around the axis, and the sampling cutting plate 22 with the arc-shaped end of the rocker arm 222 rotates in a circle, so that the sampling cutting plate 22 rotates on the surface of the ice layer in a circle.

[0064] Then after the rotation of the synchronization block 2, the vertical rod 32 and the sliding block 321 on the synchronization block 2 slide on the spiral guide rail 3, while the spiral guide rail 3 is in a static state, and then with the continuous rotation, the vertical rod 32 continuously moves away from the rotation center of the synchronization block 2. When the vertical rod 32 moves, the protrusion 323 on the side wall of the vertical rod 32 rotates on the strip-shaped groove 331 of the connecting plate 33 at this time, thereby bringing the connecting plate 33 to have a swinging force, and transmitting to the rocker arm 222. At this time, the rocker arm 222 rotates around the positioning shaft 211, and finally the rocker arm 222 drives the sampling cutting plate 22 to slide to the ice layer in an arc shape.

[0065] Through the rotation of the sampling cutting plate 22 and the feeding of the sampling cutting plate 22 to the inside of the ice layer, a composite motion of “rotation + cutting” is formed. When the two sampling cutting plates 22 gradually adhere to each other, the ice core is completely cut, and the bottom thereof is separated from the ice layer due to the arc-shaped trajectory of the sampling cutting plate 22, which is different from the defect that the conventional drilling machine needs to be disconnected twice.

[0066] When the vertical rod 32 slides onto the circular arc guide rail 31, since the center of curvature of the circular arc guide rail 31 coincides with the center of the circular plate 12, the vertical rod 32 will continue to move along the circular arc trajectory with the rotation of the synchronization block 2. At this time, the slope 311 at the end of the circular arc guide rail 31 will generate an upward pushing force on the vertical rod 32, and the vertical rod 32 drives the synchronization block 2 to move upward through the limiting block 34 and the limiting rod 341. When the synchronization block 2 moves upward, the positioning seat 21 drives the rocker arm 222 to lift upward, so that the sampling cutting plate 22 carrying the cut ice core is separated from the ice surface, and the whole separation of the ice core is completed. By means of the ingenious design of the circular arc guide rail and the slope, the automatic whole separation of the ice core is realized without manual intervention, which reduces the labor operation cost, and at the same time ensures the continuity and stability of the ice core separation process, further improves the efficiency and success rate of the ice core sampling.

[0067] During the separation process, the return spring 243 on the sliding rod 241 will be compressed, and when the synchronization block 2 rises to the top end of the slope 311, the ice core is completely disconnected from the ice sheet. At this time, the driving motor 232 reverses the rotation, the synchronization block 2 starts to rotate counterclockwise, and the vertical rod 32 slides reversely along the circular arc guide rail 31 and the spiral guide rail 3. The return spring 243 releases the elastic potential energy, pushes the sliding plate 24 and the synchronization block 2 to reset downward, so that the sampling cutting plate 22 returns to the initial position.

Claims

1. A portable polar sea ice core rapid sampling device comprising a positioning frame (1), characterized in that: the bottom of the positioning frame (1) is rotatably provided with a synchronous block (2), a driving motor (232) is installed on the positioning frame (1), and the driving motor (232) is used to drive the synchronous block (2) to rotate, the bottom of the synchronous block (2) is rotatably provided with a pair of rocker arms (222), the ends of each rocker arm (222) are provided with a sampling cutting plate (22), and the sampling cutting plate (22) is arc-shaped; the bottom of the positioning frame (1) is provided with a spiral guide rail (3), the spiral guide rail (3) is slidably provided with a vertical rod (32) which slides horizontally on the surface of the synchronous block (2), the rocker arms (222) are provided with a connecting plate (33), the connecting plate (33) is slidably connected with the output end of the vertical rod (32), the top of the vertical rod (32) is provided with a sliding block (321), the sliding block (321) is slidably connected with the spiral guide rail (3), the bottom of the vertical rod (32) is provided with a fixed plate (322), the fixed plate (322) is provided with a protrusion (323), a strip-shaped slot (331) is formed in the connecting plate (33), the protrusion (323) is slidably arranged in the strip-shaped slot (331), a limiting block (34) is installed on the side wall of the vertical rod (32), a limiting rod (341) is movably and transversely arranged in the limiting block (34), one end of the limiting rod (341) is provided with a limiting seat (342), and the limiting seat (342) is installed on the synchronous block (2); the vertical rod (32) slides along the spiral guide rail (3) to push the sampling cutting plate (22) to the surface of the glacier and cut the ice surface, and the vertical rod (32) slides to the end of the spiral guide rail (3) when the cutting is completed; the end of the spiral guide rail (3) is provided with a circular arc guide rail (31), and the surface of the circular arc guide rail (31) is provided with an inclined slope (311), the vertical rod (32) slides to the inclined slope (311) to pull the synchronous block (2) to move upwards, thereby separating the cut ice core from the glacier and completing the sampling operation. four corners of the positioning frame (1) are provided with supporting legs (11), the bottom of each supporting leg (11) is provided with a universal wheel (111), reinforcing ribs (112) are arranged between adjacent supporting legs (11), hydraulic push rods (113) are vertically installed on the side walls of the supporting legs (11), and the output ends of the hydraulic push rods (113) are provided with push plates (114); the hydraulic push rods (113) are used to jack up the positioning frame (1) to ensure the stability of the positioning frame (1).

2. A portable polar sea ice core rapid sampling device according to claim 1, characterized in that, the bottom of the positioning frame (1) is fixedly provided with a circular plate (12), the circular plate (12) is provided with a connecting frame (121), the connecting frame (121) is L-shaped, the connecting frame (121) overlaps above the positioning frame (1), the connecting frame (121) and the positioning frame (1) are connected by bolts, the bottom of the circular plate (12) is connected with the spiral guide rail (3) and the circular arc guide rail (31), and the center of curvature of the circular arc guide rail (31) coincides with the center of the circular plate (12).

3. A portable polar sea ice core rapid sampling device according to claim 1, characterized in that, ​ 4. A portable polar sea ice core rapid sampling device according to claim 1, characterized in that, The positioning frame (1) is provided with a mounting plate (132) at the bottom, a vertical plate (13) is mounted at the bottom of the mounting plate (132), the vertical plate (13) and the mounting plate (132) form a T shape, a reinforcing plate (133) is mounted at the joint of the vertical plate (13) and the mounting plate (132), the reinforcing plate (133) is triangular, a side plate (131) is mounted on the side wall of the vertical plate (13), a sliding groove (135) is formed in the side plate (131), a positioning plate (134) is slidably arranged in the sliding groove (135), the positioning plate (134) is slidably connected with a synchronous block (2), a notch (332) is formed in the positioning plate (134), and a connecting plate (33) penetrates through the notch (332).

5. A portable polar sea ice core rapid sampling device according to claim 4, characterized in that, A through groove (251) is formed in the positioning plate (134), the synchronous block (2) is inserted into the through groove (251), the synchronous block (2) is inserted into the through groove (251), the synchronous block (2) and the through groove (251) are matched with each other, and the synchronous block (2) and the through groove (251) are both rectangular, and a limiting plate (25) is mounted at the bottom of the through groove (251).

6. A portable polar sea ice core rapid sampling device according to claim 4, characterized in that, A sliding rod (241) is mounted on the positioning plate (134), a sliding plate (24) is slidably arranged on the sliding rod (241), the sliding plate (24) is connected with the surface of the synchronous block (2), a top plate (242) is mounted at the top of the sliding rod (241), a reset spring (243) is sleeved on the sliding rod (241), one end of the reset spring (243) is clamped on the sliding plate (24), and the other end of the reset spring (243) is clamped on the bottom of the top plate (242).

7. A portable polar sea ice core rapid sampling device according to claim 1, characterized in that, A cross shaft (23) is mounted at the top of the synchronous block (2), an insertion shaft (231) is mounted at the output end of the driving motor (232), the insertion shaft (231) movably penetrates through the positioning frame (1), and the insertion shaft (231) is movably inserted into the cross shaft (23).

8. A portable polar sea ice core rapid sampling device according to claim 1, characterized in that, A positioning seat (21) is mounted at the bottom of the synchronous block (2), a positioning shaft (211) is rotatably mounted on the positioning seat (21), the positioning shaft (211) is connected with a rocker arm (222), the sampling and cutting plate (22) is arc-shaped, the curvature center of the sampling and cutting plate (22) coincides with the positioning shaft (211), and a sawtooth (221) is mounted at the end of the sampling and cutting plate (22).

9. A method of portable polar sea ice core rapid sampling, characterized by, The sampling method of the portable polar sea ice core rapid sampling device of claim 6, the steps are as follows: Step one: move the device to the target ice surface through the universal wheel (111) mounted at the bottom of the supporting leg (11), start the hydraulic push rod (113), the piston rod drives the push plate (114) with anti-skid lines to press the ice surface, so that the universal wheel (111) is separated from the ice surface, and the device is fixed; Step two: start the driving motor (232), the output shaft of which is inserted into the cross shaft (23) on the top of the synchronization block (2) to drive the synchronization block (2) to rotate; the positioning shaft (211) on the bottom positioning seat (21) of the synchronization block (2) drives the rocker arm (222) to rotate, so that the sampling cutting plate (22) at the end of the rocker arm (222) rotates on the surface of the ice layer, and the vertical rod (32) and the sliding block (321) on the synchronization block (2) slide on the spiral guide rail (3); the sampling cutting plate (22) slides along the spiral guide rail (3) through the cooperation between the side wall protrusion (323) of the vertical rod (32) and the strip-shaped slot (331) of the connecting plate (33), and the ice core cutting is completed; Step three: when the vertical rod (32) slides to the circular arc guide rail (31) with the same curvature as the center of the circular plate (12), the synchronization block (2) is driven to move upward by the pushing force of the slope (311) at the end of the circular arc guide rail (31) through the limiting block (34) and the limiting rod (341); when the synchronization block (2) moves upward, the positioning seat (21) drives the rocker arm (222) to lift upward, so that the sampling cutting plate (22) carrying the ice core is separated from the surface of the glacier; Step four: reverse the driving motor (232), and the elastic potential energy of the compressed reset spring (243) on the sliding rod (241) is released to push the sliding plate (24) and the synchronization block (2) to reset downward, so that the sampling cutting plate (22) returns to the initial position, and the ice core sampling operation is completed.

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