A portable field core comparison and testing clamp

Abstract

This invention relates to the field of core clamping equipment and discloses a portable field core comparison and testing clamping device, comprising: a clamping box body, within which are a clamping platform, a fixed boss, a movable boss, two pistons, multiple sets of positioning shafts, a first positioning component, a second positioning component, and a rotating component; wherein, multiple positioning pins are provided on both the first connecting plate and the movable boss; the first positioning component can drive the second positioning component to synchronously adjust the position of the piston when the movable boss moves to a predetermined position on the core; the first positioning component can also adjust the position of the positioning shafts during the movement of the movable boss, so that each set of positioning shafts moves towards the center direction of the adjacent clamping opening. This application achieves stable clamping of cores of different lengths, eliminating or reducing detection errors in subsequent comparisons.

Description

Technical Field

[0001] This invention relates to the field of core clamping equipment technology, specifically to a portable field core comparison and testing clamp. Background Technology

[0002] In geological exploration and mining, core collection and analysis are crucial for understanding stratigraphic structure and mineral distribution. Cores are typically collected from deep underground using drilling equipment, and comparing and analyzing core samples during fieldwork is an important task. Geologists obtain geological information by observing and measuring cores to analyze stratigraphic structure and historical changes, usually using instruments such as rulers, magnifying glasses, handheld microscopes, and levels. Currently, the use of clamping devices ensures core stability, provides accurate multi-angle measurements, and avoids errors introduced by hand handling.

[0003] However, uneven cross-sections of rock cores are a common problem, especially when collecting rock core samples in the field. Due to the complexity of geological conditions, the limitations of drilling equipment, or the lack of experience of operators, the cross-sections of collected rock core samples may be damaged, uneven, or broken.

[0004] Traditional core clamps typically employ a planar clamping structure. The two clamping surfaces of a planar clamp are mostly flat surfaces, designed to maximize the contact area with the core sample end face to provide greater friction and fixation. When the core end face is relatively flat, the planar surface of a traditional clamp can make full contact with it, creating a stable clamping effect. This works well for flat core ends. However, many core ends are not flat, meaning the clamping surface and the sample end face do not form a complete planar contact. The contact area is smaller than the core end face area. This reduced contact area leads to decreased clamping stability, making it difficult to guarantee sample stability during clamping. If instability occurs, the core may move or rotate, requiring subsequent adjustments to the angles of each core sample, which is time-consuming and laborious, and the stability of the sample in its initial position cannot be guaranteed. Especially in field applications requiring multi-angle testing, unstable clamping can cause sample displacement or rotation with each adjustment, making it difficult to maintain the preset angle. These factors make it time-consuming and laborious for operators to adjust different angles of the core sample, and each adjustment also introduces errors. This results in discrepancies in the test results obtained by the operator each time, affecting the final comparison accuracy. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a portable field core comparison and testing clamp to solve at least one of the aforementioned problems in the prior art.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A portable field core comparison and testing clamp includes:

[0008] A clamping box body, wherein a clamping platform is provided inside the clamping box body, and a clamping opening is provided on the clamping platform;

[0009] Two fixed protrusions are provided in the clamping opening, and a first connecting plate and a second connecting plate are respectively provided; the first connecting plate is provided with a plurality of positioning pins;

[0010] A movable boss is provided on one side of the second connecting plate, and multiple positioning pins are also provided on the movable boss;

[0011] Two pistons are respectively mounted on one of the fixed protrusions. The movement of the piston in one of the fixed protrusions can compress the liquid inside the fixed protrusion, causing the positioning pin on it to move. The movement of the piston in the other fixed protrusion can compress the liquid inside it into the movable protrusion, causing the positioning pin on it to move.

[0012] Multiple sets of positioning shafts are provided on the clamping platform, each set of positioning shafts corresponds to an adjacent clamping opening, and the distance between two positioning shafts in each set is greater than the diameter of the rock core;

[0013] A first positioning component is disposed between the clamping platform and the movable boss, and is used to move and fix the position of the movable boss.

[0014] The second positioning component is located between the clamping platform and the fixed boss, and is used to adjust the position of the piston to increase the pressure inside the fixed boss.

[0015] A rotating component is disposed between the clamping platform and the movable boss, for synchronously rotating multiple movable bosses at the same angle;

[0016] The first positioning component can drive the second positioning component to synchronously adjust the position of the piston when the movable boss is pushed to the predetermined position of the core. The first positioning component can also adjust the position of the positioning shaft during the movement of the movable boss, so that each set of positioning shafts moves toward the center of the adjacent clamping opening.

[0017] Preferably, the first positioning component includes a rotating shaft rotatably connected to the clamping box body, a first lead screw connected to the rotating shaft, a movable frame threadedly connected to the first lead screw, a connecting rod provided on the movable frame, one end of the connecting rod extending into the clamping opening and rotatably connected to the movable boss.

[0018] Preferably, the connecting rod includes a first rod connected to the movable frame, a second rod slidably connected to the first rod, the top of the second rod being rotatably connected to the movable boss, a top rod slidably connected to the first rod, a first spring connecting the top rod and the first rod, and a top groove adapted to one end of the top rod on the second rod, the end of the top rod adapted to the top groove being hemispherical.

[0019] Preferably, the second positioning component includes a connecting frame connected to the bottom of the clamping platform, a second lead screw rotatably connected to the connecting frame, a sliding tube threadedly connected to the second lead screw and slidably connected to the connecting frame, and a piston connected to the sliding tube.

[0020] Preferably, the second positioning part further includes two connecting rings disposed on the rotating shaft, the two connecting rings being connected together, a crossbar being connected to the top of the connecting ring, a rack being connected to the crossbar and slidably connected to the connecting frame, a gear being provided at the bottom of the second lead screw and meshing with the rack, a connecting rod being connected to one of the first rods, two limiting rings being connected to the connecting rod, the connecting rod being slidably connected to one of the connecting rings, the limiting rings being located on both sides of the connecting ring, and one of the limiting rings having a preset distance from the connecting ring.

[0021] Preferably, the bottom of the second lead screw is connected to a ring body, and multiple damping rods are slidably connected to the outer wall of the ring body. A second spring is connected between the damping rod and the ring body. Multiple damping grooves are opened on the inner wall of the gear and fitted onto one end of the damping rod. One end of the damping rod is hemispherical. A connecting hole plate is connected to the fixed boss and the movable boss. The positioning pin is slidably connected to the connecting hole plate.

[0022] Preferably, the first positioning part further includes a bracket connected to the clamping platform. The bracket has a sliding groove, and a connecting shaft is slidably connected to the sliding groove. The positioning shaft is connected to the connecting shaft. A fixing frame is connected to the bottom of the clamping platform. A traction shaft is connected to the fixing frame. A reel is connected to the traction shaft and the rotating shaft, respectively. A first rope is connected to the reel. Two second ropes are connected to the first rope. The second ropes are connected to the connecting shaft.

[0023] Preferably, a connecting piece is slidably connected to the connecting shaft, a third spring is connected between the connecting piece and the connecting shaft, the second rope passes through the connecting shaft and is connected to the connecting piece, a chain is provided between the rotating shaft and the adjacent traction shaft, and a chain is also provided between the adjacent traction shafts.

[0024] Preferably, a motor is connected inside the clamping box, and the drive shaft of the motor is connected to the rotating shaft.

[0025] Preferably, the rotating component includes an adjusting shaft rotatably connected to the clamping box body, a worm gear connected to the adjusting shaft, a sleeve connected to the second connecting plate, a connecting cylinder slidably connected to the movable boss inside the sleeve, a spiral hose connected between the movable boss and the second connecting plate, and a worm wheel meshing with the worm gear connected to the sleeve.

[0026] Compared with existing technologies, the portable field core comparison and testing clamp provided by this invention can achieve at least one of the following beneficial effects:

[0027] 1. The clamping box design is compact and small in size, making it particularly suitable for use in field operations. In geological exploration and sample collection, traditional large equipment often limits operational flexibility due to its bulkiness, especially when working in complex terrain or remote areas. Transporting and installing this equipment is not only time-consuming and labor-intensive but can also reduce operational efficiency. The clamping box of this invention is easy to carry and can be quickly deployed and used in various terrain conditions, greatly improving the flexibility and response speed of on-site operations, enabling operators to perform core clamping and testing more efficiently.

[0028] 2. The first positioning component of the gripper has a precise adjustment function, enabling accurate displacement adjustment after the moving boss reaches the core's position, thus effectively fixing cores of different lengths. This design ensures that even with differences in core length, the gripper can achieve stable clamping through precise adjustment, avoiding instability caused by varying lengths and effectively preventing core movement during comparison that could lead to positional changes. This efficient clamping capability not only improves operational accuracy but also ensures core stability during clamping, reducing risks in subsequent testing processes.

[0029] 3. By setting multiple positioning pins, the position of the positioning pins can be automatically adjusted during clamping. The positioning pins can flexibly adapt to different contact positions to address potential unevenness on the core surface. This design greatly improves clamping stability, ensuring that the core can be clamped and positioned even on uneven surfaces, thus avoiding clamping instability and ensuring the safety and reliability of the sample during testing.

[0030] 4. The hydraulic system design effectively maintains the stability of the fluid during clamping. Even when rotating the various moving bosses, the fluid inside the fixed bosses does not decrease or increase; it simply flows within each cavity. This means that hydraulic transmission is not affected by rotation, ensuring the reliability of the clamp. After fixing the core sample, operators can easily rotate the moving bosses for easy comparison and inspection, thereby improving work efficiency.

[0031] 5. Utilizing the rotating components, operators can simultaneously rotate each moving boss, enabling rapid and accurate observation and analysis of core samples at different angles. This design significantly improves the efficiency of comparative testing, allowing operators to handle samples more easily. It overcomes the problems of uneven contact area between the gripper and sample, leading to difficulty in rotating the core and inconsistent rotation angles, which can occur with uneven core cross-sections in traditional techniques. This enhances the accuracy and ease of operation of the entire testing process.

[0032] 6. During clamping, the hydraulic system and positioning pins ensure the core sample is securely fixed within the clamping box. This stability not only effectively protects the core sample but also prevents potential damage or deformation. During clamping and transport, the increased stability due to the core's secure fixation within the clamping box reduces the risk of sample damage caused by bumps and vibrations. This is especially important in field operations where complex terrain and environmental conditions can make transportation difficult; the stable fixing design significantly reduces the probability of sample damage. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the clamping box structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the clamping platform structure of the present invention;

[0037] Figure 4 This is another schematic diagram of the clamping platform structure of the present invention;

[0038] Figure 5 This is a schematic diagram of the rotating shaft structure of the present invention;

[0039] Figure 6 This is a schematic diagram of the linkage structure of the present invention;

[0040] Figure 7 yes Figure 6 Enlarged schematic diagram of the local structure at point A;

[0041] Figure 8 This is another schematic diagram of the clamping platform structure of the present invention;

[0042] Figure 9 yes Figure 8 Enlarged schematic diagram of the local structure at point B;

[0043] Figure 10 This is a schematic diagram of the gear structure of the present invention;

[0044] Figure 11 This is another schematic diagram of the clamping platform structure of the present invention;

[0045] Figure 12 yes Figure 11 Enlarged schematic diagram of the local structure at point C;

[0046] Figure 13 This is a schematic diagram of the fixed boss and movable boss structure of the present invention.

[0047] Figure label:

[0048] 100. Clamping box body; 101. Clamping platform; 102. Clamping opening; 103. Fixed boss; 104. First connecting plate; 105. Second connecting plate; 106. Positioning pin; 107. Moving boss; 108. Piston; 109. Positioning shaft;

[0049] 200. Rotating shaft; 201. First lead screw; 202. Moving frame; 203. Connecting rod; 204. First rod; 205. Second rod; 206. Top rod; 207. First spring; 208. Top groove; 209. Motor;

[0050] 300. Connecting frame; 301. Second lead screw; 302. Sliding tube; 303. Connecting ring; 304. Crossbar; 305. Rack; 306. Gear; 307. Connecting rod; 308. Limiting ring; 309. Ring body; 310. Damping rod; 311. Second spring; 312. Damping groove;

[0051] 400, bracket; 401, slide rail; 402, connecting shaft; 403, fixing frame; 404, traction shaft; 405, reel; 406, first rope; 407, second rope; 408, connecting piece; 409, third spring; 410, chain;

[0052] 500. Adjusting shaft; 501. Worm gear; 502. Sleeve; 503. Connecting sleeve; 504. Spiral hose; 505. Worm wheel. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] In the field, geologists observe and measure rock cores to obtain crucial geological information, which is essential for geological research, mineral exploration, and environmental assessment. Specifically, rock cores are physical samples of the geological record. By observing the bedding, fractures, folds, and other structures within the cores, geologists can identify the sedimentary sequence, stress direction, and changes in geological structure. This helps reconstruct geological history and understand the impact of crustal movements on the region. During drilling, multiple cores represent rock strata at different depths or locations, and geological changes often occur not only vertically but also horizontally. By simultaneously comparing cores from multiple locations, geologists can analyze changes in rock strata at different depths. One of the key tasks of field core testing is accurately measuring its characteristics, such as bedding, fractures, and mineral distribution. When holding a core by hand, it is difficult to precisely align measuring tools; instruments such as rulers, magnifying glasses, handheld microscopes, and levels are typically used, as even slight movements can affect measurement accuracy. Furthermore, multi-angle observation and measurement of the core is a crucial step in the testing process. When holding the core, geologists need to constantly adjust their hand posture to achieve observation from different angles, which not only increases the complexity of the operation but may also affect the stability of the core. However, although existing clamping devices can provide a relatively stable platform, keeping the core's position largely unchanged during the testing process, their clamping stability is poor for cores with uneven end faces, and the core may still shift or rotate during the testing process.

[0055] Based on the above problems, the present invention proposes a specific embodiment, referring to... Figures 1 to 13 A portable field core comparison and testing clamp is disclosed, comprising:

[0056] Clamping box body 100;

[0057] A clamping platform 101 is disposed within the clamping box 100;

[0058] A clamping opening 102 is provided on the clamping platform 101. Two fixing bosses 103 are provided in the clamping opening 102. One fixing boss 103 is provided with a first connecting plate 104, and the other fixing boss 103 is provided with a second connecting plate 105.

[0059] Multiple positioning pins 106 are provided on the first connecting plate 104, and a movable boss 107 is provided on one side of the second connecting plate 105, and multiple positioning pins 106 are also provided on the movable boss 107.

[0060] A piston 108 is provided on two fixed bosses 103. The piston 108 in one fixed boss 103 can move to compress the liquid in the fixed boss 103 and cause the positioning pin 106 on it to move. The piston 108 in the other fixed boss 103 can move to compress the liquid in the movable boss 107 and cause the positioning pin 106 on it to move.

[0061] Multiple sets of positioning shafts 109 are provided on the clamping platform 101. Each set of positioning shafts 109 corresponds to an adjacent clamping opening 102. The distance between two positioning shafts 109 in each set is greater than the diameter of the rock core.

[0062] A first positioning component is provided between the clamping platform 101 and the movable boss 107 for moving the position of the movable boss 107. When the movable boss 107 pushes the core to the position of the fixed boss 103 and makes contact, the first positioning component can stop the movable boss 107.

[0063] The second positioning component, located between the clamping platform 101 and the fixed boss 103, is used to adjust the position of the piston 108 to increase the pressure inside the fixed boss 103. When the pressure increases to a predetermined value, the second positioning component can stop the movement of the piston 108 and lock the position of the piston 108.

[0064] A rotating component located between the clamping platform 101 and the movable boss 107 is used to rotate multiple movable bosses 107 synchronously at the same angle.

[0065] The first positioning component can drive the second positioning component to synchronously adjust the position of the piston 108 when the movable boss 107 is pushed to the predetermined position of the core. The first positioning component can also adjust the position of the positioning shaft 109 during the process of moving the movable boss 107, so that each set of positioning shafts 109 moves toward the center of the adjacent clamping opening 102.

[0066] The portable field core comparison and testing clamp provided in this embodiment is integrated into a clamping box 100. The clamping box 100 is small in size and compact in structure, making it particularly suitable for field operations. During geological exploration and sampling, carrying large equipment often presents many inconveniences, especially when working in complex terrain or remote areas, where transporting and installing large equipment is time-consuming and labor-intensive.The clamping box 100 designed in this invention is easy to carry and can be quickly deployed and used in various terrain conditions, greatly improving the flexibility of on-site operations. In application, the clamping box 100 can be opened, and the core sample to be clamped for comparative testing can be placed in the clamping opening 102. The core sample is positioned between one of the fixed protrusions 103 and the movable protrusion 107. During clamping, the position of the movable protrusion 107 can be shifted by the first positioning component, allowing the positioning pin 106 on the movable protrusion 107 to contact the core sample. Since the core samples vary in length, the first positioning component can continue to move after shifting the movable protrusion 107 to the position of the core sample, pushing the core sample so that the other end of the core sample contacts the positioning pin on one side of the fixed protrusion 103. After needle 106, the displacement of the moving boss 107 stops. The advantage of this design is that even if there are differences in the length of the core, the clamp can effectively fix the core through the precise adjustment of the first positioning component. In addition, while the first positioning component moves the position of the moving boss 107, the positioning shaft 109 can also move synchronously. Each set of two positioning shafts 109 moves towards the center of the clamping opening 102 until the positioning shaft 109 contacts the core. This ensures that even if the cross-section of the core is uneven, the core will not shift due to the pushing of the moving boss 107, and there will be no misalignment between the core and the moving boss 107 or the fixed boss 103. This design not only ensures the stability of the core during the clamping process, but also eliminates... To address potential difficulties when rotating cores to different angles during subsequent comparative testing of multiple cores, this design further improves testing accuracy and operational convenience. After the first positioning component moves the core until the fixed boss 103 and the movable boss 107 clamp the core, it can stop moving the movable boss 107, preventing damage to the core due to excessive clamping force. When the movable boss 107 is pushed to the predetermined position on the core, the first positioning component drives the second positioning component to synchronously adjust the position of the piston 108. The upward displacement of the piston 108 compresses the liquid inside the fixed boss 103. When the pressure inside one of the fixed bosses 103 increases, it allows the positioning pin 10 on the first connecting plate 104 to... The system employs a 6-position displacement mechanism with multiple positioning pins 106. These pins gradually penetrate deeper into the core surface. Due to their distribution at different locations, pins 106 deeper in the cross-sectional grooves can move a longer distance to contact the cross-section. Even if the core surface is uneven, the positioning pins 106 can adjust their positions according to the surface shape to ensure clamping stability. As the pressure within another fixed boss 103 increases, liquid can enter the movable boss 107, increasing the pressure within the movable boss 107 and causing the positioning pins 106 to move and clamp the core cross-section. This process achieves automatic adjustment of the positioning pins 106 through the transmission of liquid pressure, avoiding clamping instability caused by uneven core cross-sections or dimensional differences.Positioning pins 106 are distributed at multiple different angles, enabling them to effectively cover the entire cross-section of the core. Even if the core is uneven, each positioning pin 106 can flexibly adapt, thus achieving all-round support and stable clamping of the core. The movable bosses 107 are connected to the second connecting plate 105. The first connecting plate 104 and the second connecting plate 105 are rotatably connected to the fixed bosses 103. Even if the movable bosses 107 are rotated by the rotating component, the liquid in the fixed bosses 103 will not decrease or increase, but will only flow in each cavity. The rotation will not affect the hydraulic transmission. After the cores are fixed, when the operators perform comparative testing, they can use the rotating component to rotate each movable boss 107. Each movable boss 107 can be rotated synchronously. Through the rotating component, the operators can easily rotate each movable boss 107 without worrying about the core shifting or loosening during rotation. This design significantly improves the efficiency of comparative testing, enabling operators to quickly and accurately observe and analyze core samples from different angles. It solves the problem in existing technologies where the contact area between the gripper and the sample becomes uneven when the core cross-section is uneven. The reduced contact area leads to decreased gripping stability, making it difficult to ensure the sample's firmness during gripping. Furthermore, this design effectively secures the core within the housing for easy transport and storage. During gripping, the hydraulic system and positioning pin 106 firmly fix the core within the gripping housing 100. This stability not only protects the core sample but also prevents potential damage or deformation. Because the core is securely fixed within the gripping housing 100, operators can safely move the housing 100 from one location to another, especially in field operations where complex terrain and environmental conditions can make transportation difficult. The stable fixing design reduces the risk of sample damage due to bumps and vibrations. After core analysis is completed, the sample can be quickly and safely stored in the clamping box 100, reducing the time the sample is exposed to the external environment. This feature helps protect the integrity of the core sample and ensures accurate data for subsequent analysis and research.

[0067] As a further embodiment of the present invention, the first positioning component includes a rotating shaft 200 rotatably connected to the clamping box 100, a first lead screw 201 connected to the rotating shaft 200, a movable frame 202 threadedly connected to the first lead screw 201, a connecting rod 203 provided on the movable frame 202, one end of the connecting rod 203 extending into the clamping opening 102 and rotatably connected to the movable boss 107.

[0068] By setting up a rotating shaft 200, when the operator operates the rotating shaft 200, the rotation of the rotating shaft 200 drives the first lead screw 201 to rotate, thereby causing the threaded movable frame 202 to move axially along the first lead screw 201. The movement of the movable frame 202 directly affects the position of the movable boss 107 through the connecting rod 203, allowing it to be flexibly adjusted, thereby achieving the purpose of moving the movable boss 107 towards the core and pushing the other end of the core to contact the positioning pin 106 after contacting the core.

[0069] As a further embodiment of the present invention, the connecting rod 203 includes a first rod 204 connected to the movable frame 202, a second rod 205 slidably connected to the first rod 204, the top of the second rod 205 being rotatably connected to the movable boss 107, a top rod 206 slidably connected to the first rod 204, a first spring 207 connecting the top rod 206 and the first rod 204, and a top groove 208 adapted to one end of the top rod 206 on the second rod 205, the end of the top rod 206 that is adapted to the top groove 208 being hemispherical;

[0070] By setting a first spring 207, the position of the push rod 206 can be restricted, allowing it to engage with a corresponding top groove 208 and generate a certain frictional force. When the rotating shaft 200 and the first lead screw 201 rotate to allow the moving frame 202 to move linearly, the frictional force between the push rod 206 and the top groove 208 can cause the second rod 205 to drive the moving boss 107 to move. Specifically, for example, when one of the moving bosses 107 pushes the rock core so that the rock core contacts the positioning pin 106 on the first connecting plate 104, the rock core and the moving boss 107 move to their limit positions. However, other rock cores are shorter, and the moving bosses 107 move to their limit positions. Before reaching its limit position, the movable boss 107 that has already moved to its limit position stops moving. The force of the moving frame 202 can overcome the force of the first spring 207. The first rod 204 is still moving. The top groove 208 touches the top rod 206, which can compress the first spring 207. The top rod 206 disengages from the top groove 208. That is, after one movable boss 107 moves to its limit position, the moving frame 202 can continue to move, allowing the other movable bosses 107 to continue moving until all movable bosses 107 move to their limit positions. This enables comprehensive clamping and precise positioning of all core samples. Through the linkage 203 system, the linear movement of the moving frame 202 not only drives the synchronous movement of each movable boss 107, but also ensures that each movable boss 107 can be effectively clamped in place even when the core lengths are different. This design enables effective clamping even when the core lengths are different, ensuring that each movable boss 107 can operate flexibly in different environments. This flexibility allows operators to handle multiple cores without worrying about uneven clamping due to differences in core length, thus improving the accuracy and efficiency of testing. Furthermore, during subsequent contact clamping operations, when the moving frame 202 resets, the friction between the top rod 206 and the top groove 208 allows multiple moving bosses 107 to move synchronously, releasing all cores simultaneously. Through this synchronous release mechanism, operators can quickly and safely release all cores, reducing operation time and improving work efficiency.

[0071] As a further embodiment of the present invention, the second positioning component includes a connecting frame 300 connected to the bottom of the clamping platform 101, a second lead screw 301 rotatably connected to the connecting frame 300, a sliding tube 302 threadedly connected to the connecting frame 300 and the second lead screw 301, and a piston 108 connected to the sliding tube 302.

[0072] By setting a second lead screw 301, precise control and position adjustment of the piston 108 can be achieved. Specifically, the second lead screw 301 on the connecting frame 300 drives the sliding tube 302 to move along its thread direction by rotation, thereby causing the piston 108 to move up and down accordingly. After all the moving bosses 107 have moved to their limit positions, multiple second lead screws 301 on the connecting frame 300 can be rotated synchronously to allow the piston 108 to move synchronously and simultaneously pressurize the fixed boss 103. This not only effectively compresses the liquid inside the fixed boss 103, but also allows the lead screw to self-lock the position of the piston 108 during non-rotation, ensuring the stability and safety of the piston 108 during operation. This self-locking mechanism prevents the piston 108 from being accidentally displaced due to external forces when the lead screw is not actively operated, thus ensuring the safety and stability of the core in the clamping state and avoiding the problem of unstable clamping force caused by slight floating of the piston 108 due to liquid flow when the moving bosses 107 are rotated subsequently.

[0073] As a further embodiment of the present invention, the second positioning part further includes two connecting rings 303 disposed on the rotating shaft 200. The two connecting rings 303 are connected together. A crossbar 304 is connected to the top of the connecting ring 303. A rack 305 that is slidably connected to the connecting frame 300 is connected to the crossbar 304. A gear 306 that meshes with the rack 305 is provided at the bottom of the second lead screw 301. A connecting rod 307 is connected to one of the first rods 204. Two limiting rings 308 are connected to the connecting rod 307. The connecting rod 307 is slidably connected to one of the connecting rings 303. The limiting rings 308 are located on both sides of the connecting ring 303. One of the limiting rings 308 has a preset distance from the connecting ring 303.

[0074] By setting the connecting rod 307, in the initial state, there is a preset distance between a limiting ring 308 on the connecting rod 307 and the connecting ring 303. When the moving frame 202 moves the moving boss 107 by the first rod 204 and the second rod 205, the connecting rod 307 moves with one of the first rods 204. At this time, one limiting ring 308 moves away from the connecting ring 303 and the other limiting ring 308 moves closer to the connecting ring 303. When the moving frame 202 moves and all the moving bosses 107 move to their limit positions, the limiting ring 308 on the connecting rod 307 contacts the connecting ring 303. When the moving frame 202 continues to move, the connecting rod 307 and the limiting ring 308 can move the connecting ring 303. The displacement of the connecting ring 303 can drive the rack 305 to move through the crossbar 304. The rotation of gear 306 drives the second lead screw 301 to rotate, thereby causing all pistons 108 to move upward synchronously. This design ensures that after all the moving bosses 107 have moved and pushed the core to its limit position, the pistons 108 are moved to clamp and fix the cross-section of the core. This prevents the pistons 108 from moving prematurely and causing unnecessary displacement, which could prevent the positioning pins 106 from fully releasing the core cross-section. This design effectively avoids errors during the clamping process, ensuring that the cross-section of the core is accurately and stably clamped on the clamping platform 101, providing a reliable guarantee for subsequent comparative testing. Through this series of dynamic controls, the equipment achieves compatibility with different core cross-sectional shapes and sizes, allowing operators to more flexibly meet the processing needs of various geological samples.

[0075] As a further embodiment of the present invention, the bottom of the second lead screw 301 is connected to a ring 309, and a plurality of damping rods 310 are slidably connected to the outer side wall of the ring 309. A second spring 311 is connected between the damping rods 310 and the ring 309. The inner side wall of the gear 306 is provided with a plurality of damping grooves 312 that are sleeved on one end of the damping rods 310. One end of the damping rods 310 is hemispherical. A connecting hole plate 313 is connected to the fixed boss 103 and the movable boss 107. The positioning pin 106 is slidably connected to the connecting hole plate 313.

[0076] By setting a second spring 311, the position of the damping rod 310 can be restricted, allowing it to engage with a corresponding damping groove 312. When the gear 306 rotates, the friction between the damping groove 312 and the damping rod 310 allows the ring 309 and the second lead screw 301 to rotate. When all gears 306 and the second lead screw 301 rotate synchronously, causing the pistons 108 to move upward synchronously, if one of the pistons 108 presses the liquid in the fixed boss 103 to its limit, the upward movement of the piston 108 is restricted. The rotational resistance of the second lead screw 301 is greater than the friction between the damping rod 310 and the damping groove 312. At this time, the resistance of the second lead screw 301 can be overcome. The force of the second spring 311 causes the damping rod 310 to contract and disengage from the damping groove 312, allowing the gear 306 to idle outside the ring 309 without affecting the angle of the second lead screw or the position of the piston 108. While the other pistons 108 have not yet reached their limit positions, the other second lead screws 301 can continue to rotate, ensuring that the liquid within all the fixed bosses 103 is compressed. This allows the positioning pin 106 to fully compress the core cross-section, achieving precise positioning and clamping of the core. By ensuring uniform pressure application to each piston 108 during core processing and utilizing the second spring 311, deformation or damage to the core due to excessive force can be effectively avoided. This design not only enhances the operational flexibility of the equipment but also improves the reliability and safety of the core sample during clamping.

[0077] As a further embodiment of the present invention, the first positioning part further includes a bracket 400 connected to the clamping platform 101. The bracket 400 has a groove 401, and a connecting shaft 402 is slidably connected to the groove 401. The positioning shaft 109 is connected to the connecting shaft 402. A fixing frame 403 is connected to the bottom of the clamping platform 101. A traction shaft 404 is connected to the fixing frame 403. A reel 405 is connected to the traction shaft 404 and the rotating shaft 200, respectively. A first rope 406 is connected to the reel 405. Two second ropes 407 are connected to the first rope 406. The second ropes 407 are connected to the connecting shaft 402.

[0078] By setting the reel 405, when the rotating shaft 200 rotates to displace the movable boss 107 via the first lead screw 201, the moving frame 202, the first rod 204, and the second rod 205, multiple traction shafts 404 rotate synchronously. The rotation of the reel 405 on the rotating shaft 200 and the traction shafts 404 can wind up the first rope 406. When the first rope 406 is wound up, it can pull the position of the connecting shaft 402 via the second rope 407. The connecting shaft 402 moves along the slide groove 401, allowing the positioning shaft 109 to move toward the center of the clamping opening 102. This ensures that the positioning shaft 109 is pre-adjusted to the optimal position before the core is pushed to its limit position by the movable boss 107, ensuring that when the positioning needle 106 presses the cross-section of the core, it will not be affected by the cross-section. The flatness prevents slight misalignment of the core, which can lead to misalignment. Furthermore, in the initial state, the distance between the two positioning shafts 109 in each group is greater than the core diameter, facilitating the placement of the core into the clamping opening 102 by the operator. Even after the positioning shafts 109 have shifted, a certain distance remains between the two positioning shafts, ensuring that a portion of the core's outer wall is always exposed. This prevents interference with the operator's ability to compare and observe the core surface when the moving boss 107 is rotated with the core using a rotating component. This optimized design not only improves the clamping accuracy but also enhances the operator's experience, promoting a more efficient core processing workflow.

[0079] As a further embodiment of the present invention, a connecting piece 408 is slidably connected on the connecting shaft 402, a third spring 409 is connected between the connecting piece 408 and the connecting shaft 402, a second rope 407 passes through the connecting shaft 402 and is connected to the connecting piece 408, a chain 410 is provided between the rotating shaft 200 and the adjacent traction shaft 404, and a chain 410 is also provided between the adjacent traction shafts 404.

[0080] By incorporating a third spring 409, when the traction shaft 404 rotates to generate traction through the first rope 406 and the second rope 407, the connecting piece 408 can be pulled. This allows the connecting shaft 402 to displace via the third spring 409. After the positioning shaft 109 contacts the outer surface of the core, while the rotating shaft 200 continues to rotate, the connecting piece 408 can displace on the connecting shaft 402, compressing the third spring 409. This provides the condition for the rotating shaft 200 to continue rotating. Furthermore, the force of the third spring 409 allows the positioning shaft 109 to press against the core, further ensuring that the core is stably clamped in the predetermined position. This pressure gradually increases with the rotation of the rotating shaft 200. While compressing the third spring 409, the positioning shaft 109 does not apply excessive instantaneous impact force to the core. Instead, the spring's buffering action achieves a gentle clamping process, thus preventing damage to the core due to uneven force or excessive compression.

[0081] As a further embodiment of the present invention, a motor 209 is connected inside the clamping box 100, and the drive shaft of the motor 209 is connected to the rotating shaft 200.

[0082] By setting up motor 209, the driving force of motor 209 can directly drive the rotating shaft 200 to rotate, achieving precise power transmission and control. Simultaneously, through the speed adjustment function of motor 209, the rotation speed of rotating shaft 200 can be adjusted according to actual needs to adapt to different working conditions. Furthermore, motor 209 can be configured with an electromagnetic brake function. When motor 209 is powered off or stops running, the electromagnetic brake can automatically lock rotating shaft 200, preventing rotating shaft 200 from continuing to rotate or displaced due to inertia. This ensures the stability and safety of the system when it is not in operation, guaranteeing operational accuracy and work efficiency.

[0083] As a further embodiment of the present invention, the rotating component includes an adjusting shaft 500 rotatably connected to the clamping box 100, a worm gear 501 connected to the adjusting shaft 500, a sleeve 502 connected to the second connecting plate 105, a connecting cylinder 503 slidably connected to the movable boss 107 inside the sleeve 502, a spiral hose 504 connected between the movable boss 107 and the second connecting plate 105, and a worm wheel 505 meshing with the worm gear 501 connected to the sleeve 502.

[0084] By incorporating a spiral hose 504, which can be a wire-reinforced hose, the system ensures that liquid can still be delivered to the movable boss 107 after it moves, without deformation due to liquid pressure. Even when the liquid is pressurized, the diameter of the spiral hose 504 remains stable. Furthermore, the mechanism of the worm gear 505 and worm 501 effectively controls the rotation of the movable boss 107. Specifically, the worm 501 is driven to rotate by the adjusting shaft 500, and the worm gear 505 is connected to the sleeve 502, so that the rotation of the worm gear 501 directly drives the rotation of the worm gear 505. The connection between the worm gear 505 and the sleeve 502 ensures the transmission of rotation, thereby achieving the goal of synchronously rotating multiple movable bosses 107 with the core. The advantage of this design is that by controlling the rotation speed and direction of the worm gear 501, the relative movement between the movable bosses 107 and the core can be precisely adjusted. This allows the movable boss 107 to rotate smoothly along the surface of the core during the comparative testing process. The rotation of the movable boss 107 exposes the surface features of the core one by one during the comparative testing. This synchronous rotation mechanism not only improves the comprehensiveness of the test, but also effectively reduces errors caused by unstable movement.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable field core comparison and testing clamp, characterized in that, include: A clamping box body, wherein a clamping platform is provided inside the clamping box body, and a clamping opening is provided on the clamping platform; Two fixed protrusions are provided in the clamping opening, and a first connecting plate and a second connecting plate are respectively provided; the first connecting plate is provided with a plurality of positioning pins; A movable boss is provided on one side of the second connecting plate, and multiple positioning pins are also provided on the movable boss; Two pistons are respectively mounted on one of the fixed protrusions. The movement of the piston in one of the fixed protrusions can compress the liquid inside the fixed protrusion, causing the positioning pin on the first connecting plate to move. The movement of the piston in the other fixed protrusion can compress the liquid inside it into the movable protrusion, causing the positioning pin on it to move. Multiple sets of positioning shafts are provided on the clamping platform, each set of positioning shafts corresponds to an adjacent clamping opening, and the distance between two positioning shafts in each set is greater than the diameter of the rock core; A first positioning component is disposed between the clamping platform and the movable boss, for moving and fixing the position of the movable boss; the first positioning component also includes a bracket connected to the clamping platform, the bracket having a sliding groove, a connecting shaft slidably connected to the sliding groove, and the positioning shaft being connected to the connecting shaft; The second positioning component is located between the clamping platform and the fixed boss, and is used to adjust the position of the piston to increase the pressure inside the fixed boss. A rotating component is disposed between the clamping platform and the movable boss, for synchronously rotating multiple movable bosses at the same angle; Wherein, the first positioning component can drive the second positioning component to synchronously adjust the position of the piston when the movable boss moves to the predetermined position of the core. The first positioning component can also adjust the position of the positioning shaft during the process of moving the movable boss, so that each set of positioning shafts moves toward the center of the adjacent clamping opening. The first positioning component includes a rotating shaft rotatably connected to the clamping box body, a first lead screw connected to the rotating shaft, a movable frame threadedly connected to the first lead screw, a connecting rod provided on the movable frame, and one end of the connecting rod extending into the clamping opening and rotatably connected to the movable boss. The connecting rod includes a first rod connected to the movable frame, a second rod slidably connected to the first rod, the top of the second rod being rotatably connected to the movable boss, a top rod slidably connected to the first rod, a first spring connecting the top rod and the first rod, and a top groove adapted to one end of the top rod on the second rod, the end of the top rod adapted to the top groove being hemispherical.

2. The portable field core comparison and testing clamp according to claim 1, characterized in that, The second positioning component includes a connecting frame connected to the bottom of the clamping platform, a second lead screw rotatably connected to the connecting frame, a sliding tube threadedly connected to the second lead screw and slidably connected to the connecting frame, and a piston connected to the sliding tube.

3. The portable field core comparison and detection clamp according to claim 2, characterized in that, The second positioning component further includes two connecting rings on the rotating shaft, the two connecting rings being connected together, a crossbar being connected to the top of the connecting rings, a rack being connected to the crossbar and slidably connected to the connecting frame, a gear being provided at the bottom of the second lead screw and meshing with the rack, a connecting rod being connected to one of the first rods, two limiting rings being connected to the connecting rod, the connecting rod being slidably connected to one of the connecting rings, the limiting rings being located on both sides of the connecting rings, and one of the limiting rings having a preset distance from the connecting ring.

4. A portable field core comparison and testing clamp according to claim 3, characterized in that, The bottom of the second lead screw is connected to a ring body, and multiple damping rods are slidably connected to the outer wall of the ring body. A second spring is connected between the damping rod and the ring body. Multiple damping grooves are opened on the inner wall of the gear and fitted onto one end of the damping rod. One end of the damping rod is hemispherical. A connecting hole plate is connected to the fixed boss and the movable boss. The positioning pin is slidably connected to the connecting hole plate.

5. A portable field core comparison and testing clamp according to claim 1, characterized in that, The bottom of the clamping platform is connected to a fixed frame, and a traction shaft is connected to the fixed frame. A reel is connected to the traction shaft and the rotating shaft, respectively. A first rope is connected to the reel, and two second ropes are connected to the first rope. The second ropes are connected to the connecting shaft.

6. A portable field core comparison and testing clamp according to claim 5, characterized in that, A connecting piece is slidably connected to the connecting shaft, and a third spring is connected between the connecting piece and the connecting shaft. The second rope passes through the connecting shaft and is connected to the connecting piece. A chain is provided between the rotating shaft and the adjacent traction shaft, and a chain is also provided between the adjacent traction shafts.

7. A portable field core comparison and testing clamp according to claim 1, characterized in that, A motor is connected inside the clamping box, and the drive shaft of the motor is connected to the rotating shaft.

8. A portable field core comparison and testing clamp according to claim 1, characterized in that, The rotating component includes an adjusting shaft rotatably connected to the clamping box body, a worm gear connected to the adjusting shaft, a sleeve connected to the second connecting plate, a connecting cylinder slidably connected to the movable boss inside the sleeve, a spiral hose connected between the movable boss and the second connecting plate, and a worm wheel meshing with the worm gear connected to the sleeve.

Images