A sample holding device suitable for electron microscope

Abstract

The present invention relates to the technical field of electron microscope auxiliary equipment, and specifically discloses a sample clamping device suitable for an electron microscope, comprising a base, a displacement mechanism fixedly installed on the top of the base, a top plate fixedly installed on the top of the displacement mechanism, a driving mechanism fixedly installed on the bottom of the top plate, a circular groove opened in the middle of the top plate, a rotating ball rotatably connected to the inner side of the circular groove, an electric push rod is used to make a friction plate contact the rotating ball, and then a first cylinder is retracted to make the anti-slip suction cup separate from the rotating ball, if the tilt angle is adjusted, the second motor is started to drive the first screw rod to slide the slide, drive the friction plate to drive the rotating ball to rotate, if the direction is adjusted, the first motor is started to drive the bonding plate to rotate through the gear and the gear ring, and when adjusting the lateral rotation of the clamping mechanism, the first motor is started to drive the rail frame to rotate, thereby driving the clamping mechanism and the sample tray to rotate, realizing 3D stereoscopic movement adjustment and enhancing adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of electron microscope auxiliary equipment, in particular to a sample clamping device suitable for an electron microscope. Background Art

[0002] The electron microscope is an extremely powerful tool for microscopic observation. It abandons the visible light imaging method used in traditional optical microscopes and instead uses an electron beam to achieve imaging. The electron beam is precisely focused and controlled by the electromagnetic field, allowing it to penetrate the sample and generate signals that can reflect the internal structure and surface characteristics of the sample. The electron microscope has extremely high resolution and can clearly distinguish microscopic structures at the nanometer level and even smaller. For example, it can clearly present the ultrastructure of cells, the crystal structure of materials, and the atomic arrangement. Its working principle is based on the interaction between electrons and matter. According to different signal collection methods, such as transmitted electrons and secondary electrons, it forms images with varying brightness and rich details. Compared with optical microscopes, electron microscopes show stronger penetration and higher resolution when observing the microscopic world, providing crucial microscopic information for research in many fields such as materials science, biology, and physics.

[0003] Currently, before using an electron microscope for scanning electron microscopy observation and energy spectrum analysis, the sample needs to be fixed on a sample tray first, then the tray loaded with the sample is pushed into a vacuum chamber, the vacuum chamber door is closed and the vacuum operation is carried out. After the vacuum operation is completed, observation can begin. However, the sample tray currently used is not movable. In some cases, in order to obtain an ideal image, the sample needs to be placed at a specific angle. The fixed sample tray greatly limits the angle adjustment of the sample, making it difficult to achieve the ideal effect of the image taken from the sample. Therefore, there is an urgent need for a sample clamping device that can not only firmly clamp the sample but also flexibly adjust the observation angle of the sample.

[0004] Chinese patent publication number "CN217304961U" discloses a specimen clamping device suitable for electron microscopes. The device comprises a base, a rotating ball, a truncated table, a fixing mechanism, a sliding mechanism, and a propulsion mechanism. The device uses the spherical recess on the base and the rotating ball to rotate the specimen to various angles, thereby adapting to different angular requirements. The propulsion mechanism and the sliding mechanism cooperate to clamp specimens of various sizes, improving the flexibility of specimen clamping.

[0005] However, during use, the above-mentioned device assists in adjusting the tilt angle by adjusting the rotation of the rotating ball. However, in specific applications, this device lacks a limit and drive structure for the rotating ball. When adjustment is required, manual operation is often required. After the overall adjustment is completed, manual straightening and limiting are required. This leads to certain defects in its overall use. During use, it is not convenient to quickly and flexibly assist in adjusting the sample to be positioned. It can be seen that the existing technology has certain defects and deficiencies during use and urgently needs to be improved. Summary of the Invention

[0006] The object of the present invention is to provide a sample holding device suitable for an electron microscope to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides a specimen clamping device suitable for an electron microscope, comprising a base, a displacement mechanism fixedly mounted on the top of the base, a top plate fixedly mounted on the top of the displacement mechanism, a drive mechanism fixedly mounted on the bottom of the top plate, a circular groove formed in the middle of the top plate, a rotating ball rotatably connected to the inner side of the circular groove, the bottom of the rotating ball fixedly connected to the top of the drive mechanism, and a clamping mechanism fixedly mounted on the top of the rotating ball;

[0008] The driving mechanism includes a first motor and an annular rail, the annular rail is fixedly mounted on the bottom of the top plate, the annular rail is arranged on the outside of the circular groove, the first motor is fixedly mounted on the middle of one side of the top plate, a gear is fixedly mounted on the output end of the first motor, both ends of the inner side of the annular rail are slidably connected with a slide, the bottom of the slide is fixedly mounted with a gear ring, the gear ring and the gear are meshed, the bottom of the gear ring is fixedly mounted with an adjustment component, and a positioning component is movably mounted on the inner side of the adjustment component.

[0009] Furthermore, the adjustment assembly includes a rail frame, which is fixedly installed on the bottom of the gear ring, and a slide is slidably connected to the inner side of the rail frame. A second motor is fixedly installed on one side of the rail frame, and the output end of the second motor passes through the rail frame and is fixedly installed with a first screw rod, the first screw rod is rotatably connected to one side of the rail frame, the first screw rod and the slide are threadedly connected, and the positioning assembly is fixedly installed on the top of the slide.

[0010] Furthermore, the positioning assembly includes an electric push rod, which is fixedly installed in the middle of the bottom of the slide. The output end of the electric push rod passes through the slide and is fixedly installed with a bonding plate. The top of the bonding plate is fixedly connected with a friction plate, and the top of the friction plate is bonded to the bottom of the spinning ball.

[0011] Furthermore, a side frame is fixedly installed in the middle of one side of the rail frame, the side frame is fixedly installed on one side of the bottom of the gear, and a first cylinder is fixedly installed on the bottom of the side frame, and the output end of the first cylinder passes through the side frame.

[0012] Furthermore, the output end of the first cylinder passes through the side frame and is fixedly installed with an anti-skid suction cup. The top of the friction plate is fixedly connected with anti-skid stripes at equal intervals. The top of the anti-skid suction cup is also fitted and connected to the bottom of the spinning ball.

[0013] Furthermore, the displacement mechanism includes a slide groove and a third motor, the slide grooves are opened on both sides of the top of the base, a square groove is opened in the middle of the top of the base, both sides of the square groove are connected to the slide groove, the inner side of the slide groove is slidably connected with a sliding block, the third motor is fixedly installed on one side of the top of the base, the output end of the third motor is fixedly installed with a second screw rod, the outer surface of the second screw rod is threadedly connected with a connecting plate, the two ends of the connecting plate are fixedly connected to the inner side of the sliding block, the top of the sliding block is fixedly installed with a connecting rod, and the top of the connecting rod is fixedly connected to one side of the top plate.

[0014] Furthermore, the cross-section of the inner cavity of the chute is convex, the overall cross-section of the sliding block is also convex, and the outer surface of the sliding block and the inner wall of the chute are fixedly connected with wear-resistant gaskets.

[0015] Furthermore, the clamping mechanism includes a receiving plate, which is fixedly mounted on the top of the spinning ball. Linkage components are fixedly mounted on both sides of the top of the receiving plate, and a clamping plate is fixedly mounted on the inner side of the linkage component.

[0016] Furthermore, the linkage assembly includes side rails, which are fixedly installed on both sides of the top of the supporting plate, and the inner ends of the side rails are slidably connected with movable blocks, and the inner sides of the movable blocks are fixedly installed with hinges, and the inner ends of the hinges are hinged with linkage rods, and the inner ends of the linkage rods are hinged to the outer sides of the clamping plates through the hinges, and a second cylinder is fixedly installed on one side of the bottom of the supporting plate, and a linkage frame is fixedly installed on the output end of the second cylinder, and the outer side of the linkage frame is fixedly connected to the outer side of the movable block in the side rail away from one end of the linkage frame.

[0017] Furthermore, an anti-slip pad is fixedly installed on the inner side of the clamping plate, and anti-slip protrusions are fixedly connected to the inner side of the anti-slip pad at equal intervals. Limiting plates are fixedly installed on both sides of the top of the supporting plate, and the inner side of the limiting plate and the two ends of the clamping plate are fitly connected.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, in the present invention, by setting a displacement mechanism and a clamping mechanism, when in use, the sample tray is placed on the top of the receiving plate of the clamping mechanism, the second cylinder is started, the linkage frame is pushed, and the movable block is driven to slide, so that the linkage rod is displaced, and the two clamping plates are driven to move parallel to clamp the sample tray. After clamping is completed, the third motor is started to drive the second screw rod to rotate, so that the connecting rod drives the sliding block to slide, and pushes the receiving plate to move. The clamping device can be automatically and quickly moved in or out of the equipment. The operation is simple and fast, which greatly improves the convenience of use.

[0020] Secondly, in the present invention, a clamping mechanism and a driving mechanism are provided to cooperate with the rotating ball in the circular groove. If the sample tray needs to be adjusted after being clamped, the electric push rod is started to make the friction plate contact the rotating ball, and then the first cylinder is retracted to make the anti-slip suction cup separate from the rotating ball. If the tilt angle is adjusted, the second motor is started to drive the first screw to slide the slide, drive the friction plate to drive the rotating ball to rotate. If the direction is adjusted, the first motor is started to drive the bonding plate to rotate through the gear and the gear ring. When adjusting the horizontal rotation of the clamping mechanism, the first motor is started to drive the rail frame to rotate, thereby driving the clamping mechanism and the sample tray to rotate, realizing 3D three-dimensional movement adjustment and enhancing adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a rear view structural diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure when viewed from above in the present invention;

[0024] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 5 This is a bottom view of the structure of the driving mechanism and the clamping mechanism in the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the drive mechanism in the present invention in a disassembled state;

[0027] Figure 7 This is a schematic diagram of the top view of the driving mechanism of the present invention;

[0028] Figure 8 It is a bottom view structural diagram of the driving mechanism in the present invention.

[0029] In the figure: 1, base; 2, displacement mechanism; 21, slide; 22, third motor; 23, square groove; 24, slide block; 25, second screw rod; 26, connecting plate; 27, connecting rod; 3, top plate; 4, circular groove; 5, driving mechanism; 51, first motor; 52, ring rail; 53, gear; 54, slide; 55, gear ring; 56, shifting assembly; 561, rail frame; 562, slide; 563, second motor; 564, third 1. Screw; 57. Positioning assembly; 571. Electric push rod; 572. Laminating plate; 573. Friction plate; 574. Side frame; 575. First cylinder; 576. Anti-slip suction cup; 6. Spinning ball; 7. Clamping mechanism; 71. Attachment plate; 72. Linkage assembly; 721. Side rail; 722. Movable block; 723. Hinge; 724. Linkage rod; 725. Second cylinder; 726. Linkage frame; 73. Clamping plate; 74. Limiting plate. DETAILED DESCRIPTION

[0030] See also Figures 1-8 In an embodiment of the present invention, a sample clamping device suitable for an electron microscope includes a base 1, a displacement mechanism 2 is fixedly mounted on the top of the base 1, a top plate 3 is fixedly mounted on the top of the displacement mechanism 2, a driving mechanism 5 is fixedly mounted on the bottom of the top plate 3, a circular groove 4 is formed in the middle of the top plate 3, a rotating ball 6 is rotatably connected to the inner side of the circular groove 4, the bottom of the rotating ball 6 is fixedly connected to the top of the driving mechanism 5, and a clamping mechanism 7 is fixedly mounted on the top of the rotating ball 6;

[0031] The driving mechanism 5 includes a first motor 51 and an annular rail 52. The annular rail 52 is fixedly mounted on the bottom of the top plate 3. The annular rail 52 is arranged on the outside of the circular groove 4. The first motor 51 is fixedly mounted on the middle of one side of the top plate 3. A gear 53 is fixedly mounted on the output end of the first motor 51. Both ends of the inner side of the annular rail 52 are slidably connected to a slide plate 54. A gear ring 55 is fixedly mounted on the bottom of the slide plate 54. The gear ring 55 and the gear 53 are meshed and connected. An adjustment component 56 is fixedly mounted on the bottom of the gear ring 55. A gear 53 is movably mounted on the inner side of the adjustment component 56. The positioning component 57, whose displacement mechanism 2 on the top of the base 1 is matched with the top plate 3, provides a stable foundation and flexible operating space for the device. The circular groove 4 opened in the middle of the top plate 3 rotates and connects the rotating ball 6, and is precisely controlled by the driving mechanism 5 at the bottom. The first motor 51 in the driving mechanism 5 drives the gear 53, which engages with the gear ring 55 at the bottom of the slide 54 slidingly connected to the inner side of the annular rail 52, so that the adjustment component 56 and the positioning component 57 at the bottom of the gear ring 55 can work together to achieve multi-angle and multi-dimensional adjustment of the sample clamping.

[0032] See also Figure 6-Figure 8The adjustment component 56 includes a rail frame 561, which is fixedly mounted on the bottom of the gear ring 55. The inner side of the rail frame 561 is slidably connected to the slide 562. A second motor 563 is fixedly mounted on one side of the rail frame 561. The output end of the second motor 563 passes through the rail frame 561 and is fixedly mounted with a first screw rod 564. The first screw rod 564 is rotatably connected to one side of the rail frame 561. The first screw rod 564 and the slide 562 are threadedly connected. The positioning component 57 is fixedly mounted on the top of the slide 562. The rail frame 561 is fixed It is fixed at the bottom of the gear ring 55, providing a stable support and connection foundation for the entire assembly. The slide 562 slides on the inside of the rail frame 561, and cooperates with the second motor 563 fixedly installed on one side of the rail frame 561. The first screw rod 564 at its output end rotates in the rail frame 561 and is threadedly connected to the slide 562, thereby realizing accurate and efficient control of the position of the slide 562. This design makes the position adjustment quick and accurate, and the structure is compact and stable, which can carry the positioning component 57 and provide it with flexible and reliable displacement support.

[0033] See also Figure 6-Figure 8 The positioning component 57 includes an electric push rod 571, which is fixedly installed in the middle of the bottom of the slide 562. The output end of the electric push rod 571 passes through the slide 562 and is fixedly installed with a fitting plate 572. The top of the fitting plate 572 is fixedly connected with a friction plate 573. The top of the friction plate 573 and the bottom of the spinning ball 6 are fitted together. The electric push rod 571 can accurately control the lifting and lowering movement of the fitting plate 572, thereby driving the friction plate 573 to fit with the bottom of the spinning ball 6 to achieve precise positioning operation. The fixed installation method ensures the stability of the electric push rod 571, the fitting plate 572 and the friction plate 573 during work, reduces looseness and displacement errors, and the electric push rod 571 responds quickly, can quickly realize the positioning adjustment of the spinning ball 6, and improve work efficiency. The friction plate 573 fits tightly with the bottom of the spinning ball 6 to ensure accurate and stable positioning.

[0034] See also Figure 6-Figure 8A side frame 574 is fixedly installed in the middle of one side of the rail frame 561, and the side frame 574 is fixedly installed on the bottom side of the gear 53. A first cylinder 575 is fixedly installed at the bottom of the side frame 574. The output end of the first cylinder 575 passes through the side frame 574, and an anti-skid suction cup 576 is fixedly installed on the output end of the first cylinder 575 through the side frame 574. The top of the friction plate 573 is fixedly connected with anti-skid stripes at equal intervals, and the top of the anti-skid suction cup 576 is also in contact with the bottom of the spinning ball 6. The anti-skid suction cup 576 at the output end of the first cylinder 575 can enhance the connection with the bottom of the spinning ball 6. The suction force ensures that the spin ball 6 is firmly fixed under certain circumstances. The installation method of the anti-skid suction cup 576 running through the side frame 574 makes the structure compact and the operation direct and effective. Secondly, the evenly spaced anti-skid stripes on the top of the friction plate 573 increase the friction with the bottom of the spin ball 6, further improving the stability and accuracy when adjusting the spin ball 6 and avoiding slippage or deviation. Moreover, the dual anti-skid design of the anti-skid suction cup 576 and the anti-skid stripes cooperate with each other to make the fixation and adjustment of the spin ball 6 more reliable and adaptable to different work requirements and complex working conditions.

[0035] See also Figures 1-4 The displacement mechanism 2 includes a slide 21 and a third motor 22. The slide 21 is opened on both sides of the top of the base 1. A square groove 23 is opened in the middle of the top of the base 1. Both sides of the square groove 23 are connected to the slide 21. The inner side of the slide 21 is slidably connected with a sliding block 24. The third motor 22 is fixedly installed on one side of the top of the base 1. The output end of the third motor 22 is fixedly installed with a second screw rod 25. The outer surface of the second screw rod 25 is threadedly connected with a connecting plate 26. The two ends of the connecting plate 26 are fixedly connected to the inner side of the sliding block 24. A connecting rod 27 is fixedly installed on the top of the sliding block 24. The top of the connecting rod 27 is fixedly connected to one side of the top plate 3. The cross-sectional shape of the inner cavity of the slide 21 is a convex shape. The overall cross-sectional shape of the sliding block 24 It is also set to a convex shape. The outer surface of the sliding block 24 and the inner wall of the sliding groove 21 are fixedly connected with wear-resistant gaskets. The sliding grooves 21 opened on both sides of the top of the base 1 are connected to the square groove 23 in the middle. The structural design is reasonable and saves space. The convex sliding groove 21 cooperates with the sliding block 24 of the same shape to effectively prevent dislocation and ensure the stability of sliding. The setting of the wear-resistant gasket reduces friction and wear and extends the service life. The third motor 22 drives the second screw rod 25, which drives the connecting plate 26 through a threaded connection, thereby making the sliding block 24 fixed thereto slide accurately, and then the connecting rod 27 on the top of the sliding block 24 drives the top plate 3 to move. This transmission method has high precision and can achieve precise displacement control, and the overall structure is stable and reliable in operation.

[0036] See also Figures 1-4The clamping mechanism 7 includes a receiving plate 71, which is fixedly mounted on the top of the rotating ball 6. Linkage components 72 are fixedly mounted on both sides of the top of the receiving plate 71, and a clamping plate 73 is fixedly mounted on the inner side of the linkage component 72. The receiving plate 71 is fixed to the top of the rotating ball 6, ensuring the stability of the connection, so that it can stably transmit movement and withstand force. The linkage components 72 on both sides of the top of the receiving plate 71 provide strong and stable support and movement control for the inner clamping plate 73, making the clamping action accurate, smooth and reliable. This design structure is simple, easy to manufacture and maintain, and reduces cost and maintenance difficulty. At the same time, the linkage components 72 on both sides work together to achieve uniform and stable clamping of the sample, improve the accuracy and effect of clamping, and meet the needs of practical applications.

[0037] See also Figure 4 The linkage assembly 72 includes side rails 721, which are fixedly installed on both sides of the top of the receiving plate 71. The inner ends of the side rails 721 are slidably connected to movable blocks 722. The inner sides of the movable blocks 722 are fixedly installed with hinges 723. The inner ends of the hinges 723 are hinged to linkage rods 724. The inner ends of the linkage rods 724 are hinged to the outer sides of the clamping plates 73 through hinges 723. A second cylinder 725 is fixedly installed on one side of the bottom of the receiving plate 71. A linkage frame 726 is fixedly installed on the output end of the second cylinder 725. The outer side of the linkage frame 726 is fixedly connected to the outer side of the movable block 722 in the side rail 721 away from the linkage frame 726. 21 is fixedly installed on both sides of the top of the receiving plate 71, providing a stable track foundation to ensure that the movable block 722 can slide smoothly. The movable block 722 slides at both ends in the side rails 721, which increases the flexibility of movement and the adjustable range. Secondly, through the connection method of the hinge 723 and the linkage rod 724, the effective transmission of force and the coordination of action are realized, making the movement of the clamping plate 73 more stable and precise. Moreover, the second cylinder 725, as a power source, can provide a stable and powerful thrust, and drives the movable block 722 to move through the linkage frame 726, with rapid response and high control accuracy. The overall structure of the linkage assembly 72 is compact, reliable in operation, and easy to maintain and adjust.

[0038] See also Figure 2The cam 73 is fixed on the inner side of the clamping plate 73 with an anti-slip pad, and the inner side of the anti-slip pad is fixedly connected with anti-slip protrusions at equal intervals. Limiting plates 74 are fixedly installed on both sides of the top of the receiving plate 71. The inner side of the limiting plate 74 is fitly connected to the two ends of the clamping plate 73. The anti-slip pads on the inner side of the clamping plate 73 and the anti-slip protrusions at equal intervals can increase the friction with the sample, effectively preventing the sample from slipping during the clamping process, ensuring the stability of the clamping. Secondly, the limiting plates 74 on both sides of the top of the receiving plate 71 are fitly connected to the two ends of the clamping plate 73, limiting the moving range of the clamping plate 73 and ensuring that the clamping plate 73 can move parallel to each other, thereby achieving uniform clamping of the sample and improving the accuracy and stability of the clamping. Moreover, this design structure is simple, easy to manufacture and install, and also convenient for maintenance and replacement of the anti-slip pads and limiting plates 74.

[0039] The working principle of the present invention is as follows: by setting the displacement mechanism 2 and the clamping mechanism 7, the sample tray to be clamped and positioned can be placed on the top of the receiving plate 71 of the clamping mechanism 7, at this time, the second cylinder 725 is started to operate, and the second cylinder 725 is used to push the linkage frame 726 to move, and the movement of the linkage frame 726 can synchronously drive the movable block 722 to slide on the inner side of the side rail 721, and the sliding of the movable block 722 can drive the linkage rod 724 on the inner side of the hinge 723 to move relative to each other, and the movable displacement of the linkage rod 724 can synchronously drive the two clamping plates 73 to move relative to each other, and the two ends of the clamping plates 73 are limited by the limiting plates 74, so that the clamping plates 73 can be in a parallel state and move synchronously. At this time, the sample tray can be stably clamped and positioned by the clamping plates 73;

[0040] After the clamping is completed, the third motor 22 is started to run. The operation of the third motor 22 can drive the second screw rod 25 to rotate. The rotation of the second screw rod 25 can drive the connecting rod 27 to drive the sliding block 24 to move on the inner side of the sliding groove 21. The sliding of the sliding block 24 can drive the connecting rod 27 to move. At this time, the linear displacement of the connecting rod 27 can assist in pushing the receiving plate 71 to move, so that the device can automatically and quickly move the clamped device into the equipment or out of the interior of the equipment, making the overall device convenient and fast to operate, which can improve the overall convenience of use of the device.

[0041] By setting the clamping mechanism 7, the driving mechanism 5 cooperates with the rotating ball 6 inside the circular groove 4. When the sample tray is clamped, if adjustment is needed, the electric push rod 571 can be started to operate. The electric push rod 571 can push the bonding plate 572 upward. At this time, the friction plate 573 on the top of the bonding plate 572 contacts the bottom of the rotating ball 6. At this time, the first cylinder 575 is started again to contract and drive the anti-slip suction cup 576 to separate from the rotating ball 6. The rotating ball 6 loses the fixation of the suction cup and the first cylinder 575. At this time, if its tilt angle needs to be adjusted, the second motor 563 can be directly started to rotate the first screw rod 564. The first screw rod 564 drives the slide 562 to slide on the inner side of the rail frame 561. The sliding of the slide 562 can drive the electric push rod 571 and the bonding plate 572 to move. The movement of the bonding plate 572 can prompt the friction plate 573 to drive the rotating ball 6 to rotate. The rotating ball 6 can directly rotate to adjust the tilt angle of the rotating ball 6.

[0042] If the direction needs to be adjusted, the first cylinder 575 can be started to push the anti-skid suction cup 576 to fix the spinning ball 6, and then the electric push rod 571 can be started to make the friction plate 573 separate from the bottom of the spinning ball 6. The first motor 51 can be started to drive the gear 53 to rotate, and the gear 53 and the gear ring 55 are meshed and connected. At this time, the gear 53 can drive the gear ring 55 to rotate, and the rotation of the gear ring 55 can drive the electric push rod 571 and the bonding plate 572 on its top to rotate, so that the direction of the bonding plate 572 can be changed. At this time, by loosening the first cylinder 575 and then Start the electric push rod 571 to drive the friction plate 573 to fit the spinning ball 6. At this time, drive the second motor 563 again to drive the friction plate 573 to drive the spinning ball 6 to rotate in different directions. When it is necessary to adjust the horizontal rotation of the clamping mechanism 7, directly start the first motor 51 to drive the rail frame 561 to rotate, which can assist in driving the friction plate 573 to rotate. At this time, the clamping mechanism 7 and the sample tray clamped and positioned inside it can be directly driven to rotate, so that the device can perform 3D stereoscopic movement adjustment, which can improve the overall adaptability of the device.

Claims

1. A sample holding device suitable for an electron microscope, characterized in that: The invention comprises a base (1), a displacement mechanism (2) is fixedly mounted on the top of the base (1), a top plate (3) is fixedly mounted on the top of the displacement mechanism (2), a driving mechanism (5) is fixedly mounted on the bottom of the top plate (3), a circular groove (4) is provided in the middle of the top plate (3), a rotating ball (6) is rotatably connected to the inner side of the circular groove (4), the bottom of the rotating ball (6) is fixedly connected to the top of the driving mechanism (5), and a clamping mechanism (7) is fixedly mounted on the top of the rotating ball (6); The driving mechanism (5) comprises a first motor (51) and an annular rail (52), wherein the annular rail (52) is fixedly mounted on the bottom of the top plate (3), and the annular rail (52) is arranged on the outside of the circular groove (4). The first motor (51) is fixedly mounted on the middle of one side of the top plate (3), and a gear (53) is fixedly mounted on the output end of the first motor (51). Both ends of the inner side of the annular rail (52) are slidably connected to a slide plate (54), and a gear ring (55) is fixedly mounted on the bottom of the slide plate (54), and the gear ring (55) and the gear (53) are meshed and connected. An adjustment component (56) is fixedly mounted on the bottom of the gear ring (55), and a positioning component (57) is movably mounted on the inner side of the adjustment component (56).

2. A sample holding device suitable for an electron microscope according to claim 1, characterized in that: The shifting assembly (56) includes a rail frame (561), the rail frame (561) is fixedly mounted on the bottom of the gear ring (55), the inner side of the rail frame (561) is slidably connected to a slide (562), a second motor (563) is fixedly mounted on one side of the rail frame (561), an output end of the second motor (563) passes through the rail frame (561) and is fixedly mounted with a first screw rod (564), the first screw rod (564) is rotatably connected to one side of the rail frame (561), the first screw rod (564) and the slide (562) are threadedly connected, and the positioning assembly (57) is fixedly mounted on the top of the slide (562).

3. A sample holding device suitable for an electron microscope according to claim 2, characterized in that: The positioning assembly (57) includes an electric push rod (571), which is fixedly installed in the middle of the bottom of the slide (562). The output end of the electric push rod (571) passes through the slide (562) and is fixedly installed with a bonding plate (572). The top of the bonding plate (572) is fixedly connected to a friction plate (573), and the top of the friction plate (573) is bonded to the bottom of the spinning ball (6).

4. The sample holding device for an electron microscope according to claim 3, characterized in that: A side frame (574) is fixedly mounted on the middle portion of one side of the rail frame (561), the side frame (574) is fixedly mounted on one side of the bottom of the gear (53), a first cylinder (575) is fixedly mounted on the bottom of the side frame (574), and an output end of the first cylinder (575) passes through the side frame (574).

5. The sample holding device for an electron microscope according to claim 4, characterized in that: The output end of the first cylinder (575) passes through the side frame (574) and is fixedly mounted with an anti-skid suction cup (576). The top of the friction plate (573) is fixedly connected with anti-skid stripes at equal intervals. The top of the anti-skid suction cup (576) is also fitted and connected to the bottom of the spinning ball (6).

6. The sample holding device for an electron microscope according to claim 1, characterized in that: The displacement mechanism (2) includes a slide groove (21) and a third motor (22), wherein the slide groove (21) is provided on both sides of the top of the base (1), a square groove (23) is provided in the middle of the top of the base (1), both sides of the square groove (23) are connected to the slide groove (21), the inner side of the slide groove (21) is slidably connected with a sliding block (24), the third motor (22) is fixedly installed on one side of the top of the base (1), the output end of the third motor (22) is fixedly installed with a second screw rod (25), the outer surface of the second screw rod (25) is threadedly connected with a connecting plate (26), the two ends of the connecting plate (26) are fixedly connected to the inner side of the sliding block (24), the top of the sliding block (24) is fixedly installed with a connecting rod (27), and the top of the connecting rod (27) is fixedly connected to one side of the top plate (3).

7. The sample holding device for an electron microscope according to claim 6, characterized in that: The cross-sectional shape of the inner cavity of the chute (21) is set in a convex shape, and the overall cross-sectional shape of the sliding block (24) is also set in a convex shape. The outer surface of the sliding block (24) and the inner wall of the chute (21) are both fixedly connected with wear-resistant gaskets.

8. The sample holding device for an electron microscope according to claim 1, characterized in that: The clamping mechanism (7) comprises a receiving plate (71), the receiving plate (71) being fixedly mounted on the top of the spinning ball (6), linkage components (72) being fixedly mounted on both sides of the top of the receiving plate (71), and a clamping plate (73) being fixedly mounted on the inner side of the linkage component (72).

9. The sample holding device for an electron microscope according to claim 8, characterized in that: The linkage assembly (72) includes side rails (721), which are fixedly mounted on both sides of the top of the receiving plate (71). Both ends of the inner side of the side rails (721) are slidably connected to movable blocks (722). The inner sides of the movable blocks (722) are fixedly mounted with hinges (723). The inner ends of the hinges (723) are hinged to linkage rods (724). The inner ends of the linkage rods (724) are hinged to the outer sides of the clamping plate (73) through the hinges (723). A second cylinder (725) is fixedly mounted on one side of the bottom of the receiving plate (71). A linkage frame (726) is fixedly mounted on the output end of the second cylinder (725). The outer side of the linkage frame (726) is fixedly connected to the outer side of the movable block (722) in the side rails (721) away from the linkage frame (726).

10. The sample holding device for an electron microscope according to claim 9, characterized in that: An anti-skid pad is fixedly installed on the inner side of the clamping plate (73), and anti-skid protrusions are fixedly connected to the inner side of the anti-skid pad at equal intervals. Limiting plates (74) are fixedly installed on both sides of the top of the receiving plate (71), and the inner side of the limiting plate (74) and the two ends of the clamping plate (73) are fitted and connected.

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