Neutron diffraction experiment measurement volume beam direction precise positioning adjustment device

Abstract

The present invention belongs to the technical field of neutron diffraction experiments, and discloses a device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment. The device comprises a switching platform, a linear drive mechanism, a rotary drive mechanism, and a lifting and lowering adjustment mechanism. The lifting and lowering adjustment mechanism comprises a horizontal adjustment plate, a base plate, and a lifting and lowering adjustment assembly. The rotary drive mechanism is mounted on the horizontal adjustment plate. The lifting and lowering adjustment assembly comprises a support column, an adjustment member, and a locking nut. The support column is fixedly mounted on the base plate. The adjustment member and the locking nut are both threadedly sleeved on the periphery of the support column. The end of the adjustment member facing the horizontal adjustment plate is configured as a spherical body, and the side of the horizontal adjustment plate facing the base plate is provided with a spherical groove adapted to the spherical body. The device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment of the present invention can adjust the posture of a fine collimator on a switching platform, thereby achieving precise positioning and adjustment of the direction of the experimentally measured volume beam to meet the needs of neutron diffraction experiments.

Description

Technical Field

[0001] The present invention relates to the technical field of neutron diffraction experiments, and in particular to a device for precisely positioning and adjusting a beam direction in a volume measurement in a neutron diffraction experiment. Background Art

[0002] During the neutron diffraction experiment, a displacement platform is required to accurately position the direction of the volume beam of the fine collimator. The displacement platform in the prior art, for example, has application number CN202211491015.3 and the application name is a multi-dimensional neutron experiment sample carrying platform. A linear drive mechanism is used to drive the sample to be tested along the X and Y directions, a rotation drive mechanism is used to drive the sample to be tested to rotate in the XY plane, and a lifting drive mechanism is used to drive the sample to be tested along the Z axis. The device is aimed at adjusting the sample posture, and the accuracy and spatial size do not meet the experimental requirements. However, in the prior art, the displacement is basically used alone and is not assembled with the fine collimator and symmetrically matched to be used in the neutron diffraction experiment. A single one cannot achieve precise positioning and adjustment of the measurement volume beam direction, and cannot meet the requirements of the neutron diffraction experiment for precise volume measurement. Therefore, the existing carrying platform is used to support the fine collimator, and the use status of the fine collimator cannot be guaranteed.

[0003] Therefore, there is an urgent need for a precise positioning and adjustment device for the beam direction of the neutron diffraction experiment measurement volume, which can adjust the posture of the fine collimator on the switching platform so that the measurement volume corresponding to the fine collimator is optimal to meet the needs of the neutron diffraction experiment. Summary of the Invention

[0004] One purpose of the present invention is to provide a device for precisely positioning and adjusting the beam direction of a neutron diffraction experiment measurement volume, which can adjust the posture of a fine collimator on a switching platform to optimize the measurement volume corresponding to the fine collimator to meet the needs of the neutron diffraction experiment.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement, comprising:

[0007] A switching platform, the switching platform is used to carry a fine collimator;

[0008] a linear drive mechanism, wherein the switching platform is mounted at an output end of the linear drive mechanism, and the linear drive mechanism is used to drive the switching platform to move along a first horizontal direction and a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction;

[0009] A rotary drive mechanism, wherein the linear drive mechanism is installed at the output end of the rotary drive mechanism, and the rotary drive mechanism is used to drive the linear drive mechanism and the switching platform to rotate around a vertical line;

[0010] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod.

[0011] As an optional technical solution, the end of the adjustment member away from the horizontal adjustment plate is configured as a hexagonal prism.

[0012] As an optional technical solution, the lifting and adjusting components are provided in four groups, and the four groups of lifting and adjusting components are respectively located at the four corners of the horizontal adjustment plate.

[0013] As an optional technical solution, the linear drive mechanism includes:

[0014] a first driving assembly, the switching platform being mounted at an output end of the first driving assembly, and the first driving assembly being used to drive the switching platform to move along the first horizontal direction;

[0015] a second driving assembly, wherein the first driving assembly is mounted on an output end of the second driving assembly, and the second driving assembly is used to drive the first driving assembly and the switching platform to move along the second horizontal direction;

[0016] A first rolling linear slide rail is provided between the first driving assembly and the second driving assembly, and the first rolling linear slide rail extends along the first horizontal direction.

[0017] As an optional technical solution, the first driving component includes:

[0018] a first rotary motor, mounted on an output end of the second drive assembly, a first screw rod being mounted on the output end of the first rotary motor, the first screw rod extending along the first horizontal direction, and a first nut being rotatably sleeved on a circumference of the first screw rod;

[0019] A first bearing plate, wherein the first bearing plate is fixedly connected to the first nut, and the switching platform is fixedly mounted on the first bearing plate.

[0020] As an optional technical solution, the outer peripheral cover of the first screw rod is provided with a first shell, and the first nut is located inside the first shell.

[0021] As an optional technical solution, the second driving component includes:

[0022] a second rotary motor mounted on the output end of the rotary drive mechanism, the output end of the second rotary motor being mounted with a second screw rod, the second screw rod extending along the second horizontal direction, a second nut being rotatably sleeved on the circumference of the second screw rod;

[0023] A second bearing plate is fixedly connected to the second nut, the first rotary motor is mounted on the second bearing plate, and the first rolling linear guide rail is arranged between the second bearing plate and the first bearing plate.

[0024] As an optional technical solution, the outer peripheral cover of the second screw rod is provided with a second shell, and the second nut is located inside the second shell.

[0025] As an optional technical solution, the rotation drive mechanism includes:

[0026] a third rotary motor, mounted on the horizontal adjustment plate, wherein an output end of the third rotary motor is mounted with a third bearing plate, and the second rotary motor is fixedly mounted on the third bearing plate;

[0027] A second rolling linear slide rail is provided between the third bearing plate and the second bearing plate, and the second rolling linear slide rail extends along the second horizontal direction.

[0028] As an optional technical solution, a third boss is provided on the top of the third bearing plate, third bearing steps are provided on both sides of the third boss, and the two third bearing steps are both provided with the second rolling linear guide rail.

[0029] The beneficial effects of the present invention are:

[0030] The present invention provides a device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement. The device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement is used in pairs. Each device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement is used to carry a fine collimator. The fine collimators are adjusted by the device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement so that the measurement volumes corresponding to the two fine collimators reach an optimal state. The device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment measurement of the present invention comprises a switching platform, a linear drive mechanism, a rotary drive mechanism, and a lifting and adjusting mechanism. After the fine collimator is installed on the switching platform, if the switching platform appears to be tilted, it is adjusted by one or more of the multiple lifting and adjusting components. The adjusting piece threadedly sleeved on the periphery of the support column is rotated to make the adjusting piece rise or fall in the vertical direction. The spherical body of the adjusting member is inserted into the spherical groove of the horizontal adjusting plate, and the adjusting member supports the horizontal adjusting plate. The horizontal adjusting plate is lifted or lowered by the rotary drive mechanism, the linear drive mechanism and the switching platform until the switching platform is adjusted to a horizontal posture, and then the locking nut is used to lock the horizontal adjusting plate to meet the needs of the neutron diffraction experiment; in the present invention, the spherical body of the adjusting member is adapted to the spherical groove of the horizontal adjusting plate. If the installation position of the precise positioning adjustment device for measuring the volume beam direction of the neutron diffraction experiment is an inclined ground or other inclined machine, the base plate is in an inclined posture, and it is necessary to rotate the spherical body of the adjusting member in the spherical groove of the horizontal adjusting plate to make the adjusting member tilt and support the horizontal adjusting plate to adjust the horizontal adjusting plate to a horizontal posture; in the present invention, the spherical body of the adjusting member is adapted to the spherical groove of the horizontal adjusting plate, which can improve the support stability of the adjusting member on the horizontal adjusting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below based on the accompanying drawings and examples;

[0032] Figure 1 This is a schematic structural diagram from a first perspective of the device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to an embodiment;

[0033] Figure 2 An exploded view from a second perspective of the device for precisely positioning and adjusting the volume beam direction for measuring a neutron diffraction experiment as described in an embodiment;

[0034] Figure 3 A top view of the device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume as described in an embodiment;

[0035] Figure 4 for Figure 3 Cross-sectional view of the AA cross section.

[0036] In the picture:

[0037] 1. Switch platforms;

[0038] 2. Linear drive mechanism; 21. First drive assembly; 211. First rotary motor; 212. First screw rod; 213. First nut; 214. First bearing plate; 215. First housing; 22. Second drive assembly; 221. Second rotary motor; 222. Second screw rod; 223. Second nut; 224. Second bearing plate; 225. Second housing; 23. First rolling linear guide rail;

[0039] 3. Rotation drive mechanism; 31. Third rotary motor; 32. Third bearing plate; 33. Second rolling linear guide rail;

[0040] 4. Lifting adjustment mechanism; 41. Horizontal adjustment plate; 411. Spherical groove; 42. Bottom plate; 43. Lifting adjustment assembly; 431. Support column; 432. Adjusting member; 4321. Spherical body; 4322. Hexagonal prism; 433. Locking nut. DETAILED DESCRIPTION

[0041] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0045] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] In the existing multi-dimensional neutron experiment sample carrying platform, the lifting drive mechanism can only adjust the horizontal height of the sample to be tested along the Z-axis direction as a whole, and cannot be used for neutron diffraction experiments with fine collimators. For this reason, this embodiment provides a precise positioning and adjustment device for measuring the volume beam direction in neutron diffraction experiments.

[0048] like Figures 1 to 4As shown, this embodiment provides a device for precisely positioning and adjusting the direction of a volume beam in a neutron diffraction experiment. The device comprises a switching platform 1, a linear drive mechanism 2, a rotary drive mechanism 3 and a lifting and lowering adjustment mechanism 4. The switching platform 1 is used to carry a fine collimator. The switching platform 1 is mounted on the output end of the linear drive mechanism 2. The linear drive mechanism 2 is used to drive the switching platform 1 to move along a first horizontal direction and a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction. The linear drive mechanism 2 is mounted on the output end of the rotary drive mechanism 3. The rotary drive mechanism 3 is used to drive the linear drive mechanism 2 and the switching platform 1 to rotate around a vertical line. The lifting and lowering adjustment mechanism 4 comprises a horizontal adjustment plate 41, a bottom plate 42 and a plurality of lifting and lowering adjustment components 43. The rotary drive mechanism 3 is mounted on the horizontal adjustment plate 41. The base plate 42 is arranged at the bottom of the horizontal adjustment plate 41, and the lifting adjustment assembly 43 is arranged between the horizontal adjustment plate 41 and the base plate 42. The lifting adjustment assembly 43 includes a support column 431, an adjusting member 432 and a locking nut 433. The support column 431 is fixedly installed on the base plate 42, and the support column 431 passes through the through hole of the horizontal adjustment plate 41 in the vertical direction. The outer periphery of the support column 431 is provided with an external thread, and the adjusting member 432 and the locking nut 433 are both threadedly sleeved on the periphery of the support column 431. The adjusting member 432 is located between the horizontal adjustment plate 41 and the base plate 42. The end of the adjusting member 432 facing the horizontal adjustment plate 41 is set to a spherical body 4321, and the side of the horizontal adjustment plate 41 facing the base plate 42 is provided with a spherical groove 411 adapted to the spherical body 4321, and the locking nut 433 is located on the side of the horizontal adjustment plate 41 away from the base plate 42.

[0049] Specifically, the switching platform 1 can be installed with collimators of different specifications, and realize precise positioning and adjustment of the experimental measurement volume beam direction, so that the accuracy of the collimator is better than 0.05 mm. After the fine collimator is installed on the switching platform 1, if the switching platform 1 appears to be tilted, it is adjusted through one or more groups of the multiple lifting adjustment components 43, and the adjustment member 432 threaded on the periphery of the support column 431 is rotated to make the adjustment member 432 rise or fall in the vertical direction. The spherical body 4321 of the adjustment member 432 is inserted into the spherical groove 411 of the horizontal adjustment plate 41, and the adjustment member 432 supports the horizontal adjustment plate 41. The rotary drive mechanism 3, the linear drive mechanism 2 and the switching platform 1 are lifted or lowered by the horizontal adjustment plate 41 until the switching platform 1 is adjusted to a horizontal posture, and then the locking nut 433 is used to lock the horizontal adjustment plate 41 to meet the requirements of the neutron diffraction experiment. ; in this embodiment, the spherical body 4321 of the adjustment member 432 is adapted to the spherical groove 411 of the horizontal adjustment plate 41. If the installation position of the neutron diffraction experiment volume beam direction precision positioning adjustment device is an inclined ground or other inclined machine, the base plate 42 is in an inclined posture, and it is necessary to rotate the spherical body 4321 of the adjustment member 432 in the spherical groove 411 of the horizontal adjustment plate 41, so that the adjustment member 432 tilts to support the horizontal adjustment plate 41 and adjusts the horizontal adjustment plate 41 to a horizontal posture; in this embodiment, the spherical body 4321 of the adjustment member 432 is adapted to the spherical groove 411 of the horizontal adjustment plate 41, which can improve the support stability of the adjustment member 432 on the horizontal adjustment plate 41.

[0050] The inclination of the installation position of the precise positioning adjustment device for measuring the volume beam direction in the neutron diffraction experiment is the tilt error, that is, the tilt error of the tilted ground and the tilt error of the tilted machine. By adjusting the lifting adjustment component 43, the influence of the tilt error on the switching platform 1 can be offset.

[0051] Optionally, one end of the adjusting member 432 away from the horizontal adjustment plate 41 is configured as a hexagonal prism 4322 , so that an operator can use a tool to rotate the adjusting member 432 so that the adjusting member 432 rotates around the supporting column 431 .

[0052] In this embodiment, the lifting adjustment components 43 are provided in four groups, and the four groups of lifting adjustment components 43 are respectively located at the four corners of the horizontal adjustment plate 41. The four groups of lifting adjustment components 43 are used to perform horizontal adjustment so that the collimator reaches the working height and the levelness is better than 0.05 mm.

[0053] Optionally, the linear drive mechanism 2 includes a first drive component 21, a second drive component 22 and a first rolling linear slide 23. The switching platform 1 is installed at the output end of the first drive component 21, and the first drive component 21 is used to drive the switching platform 1 to move along the first horizontal direction; the first drive component 21 is installed at the output end of the second drive component 22, and the second drive component 22 is used to drive the first drive component 21 and the switching platform 1 to move along the second horizontal direction; the first rolling linear slide 23 is arranged between the first drive component 21 and the second drive component 22, and the first rolling linear slide 23 extends along the first horizontal direction.

[0054] When the switching platform 1 is in a horizontal position, the first drive assembly 21 and the second drive assembly 22 are used to adjust the position of the switching platform 1 in the horizontal plane. In this embodiment, one of the first horizontal direction and the second horizontal direction is the X-axis direction, and the other is the Y-axis direction. The first drive assembly 21 and the second drive assembly 22 can adjust the X and Y coordinates of the switching platform 1. The provision of the first rolling linear guide rail 23 can improve the stability of the switching platform 1 in the first horizontal direction. The vertical direction in this embodiment is the Z-axis direction.

[0055] Optionally, the first drive component 21 includes a first rotating motor 211 and a first supporting plate 214. The first rotating motor 211 is installed at the output end of the second drive component 22. The output end of the first rotating motor 211 is installed with a first screw rod 212. The first screw rod 212 extends along the first horizontal direction. The first screw rod 212 is provided with a first nut 213 on the circumference of the rotating sleeve; the first supporting plate 214 is fixedly connected to the first nut 213, and the switching platform 1 is fixedly installed on the first supporting plate 214.

[0056] The first rotary motor 211 drives the first screw 212 to rotate, which in turn drives the first nut 213 to rotate. This in turn causes the first nut 213 to drive the first carrier plate 214 and the switching platform 1 to move along the first horizontal direction. The screw-nut pair drives the first carrier plate 214, improving movement accuracy. In this embodiment, the movement accuracy of the switching platform 1 along the first horizontal direction is better than 0.05 mm, using a grating ruler for closed-loop control.

[0057] Optionally, the outer periphery of the first screw rod 212 is provided with a first housing 215, and the first nut 213 is located inside the first housing 215. The first housing 215 is used to isolate and protect the first screw rod 212 and the first nut 213 to prevent the outside from affecting the transmission accuracy of the screw rod and nut pair.

[0058] Optionally, the second drive assembly 22 includes a second rotating motor 221 and a second supporting plate 224. The second rotating motor 221 is installed at the output end of the rotating drive mechanism 3. The output end of the second rotating motor 221 is installed with a second screw rod 222. The second screw rod 222 extends along the second horizontal direction. The circumferential rotating sleeve of the second screw rod 222 is provided with a second nut 223; the second supporting plate 224 is fixedly connected to the second nut 223, the first rotating motor 211 is installed on the second supporting plate 224, and the first rolling linear slide 23 is arranged between the second supporting plate 224 and the first supporting plate 214.

[0059] The second rotary motor 221 drives the second screw 222 to rotate, which in turn drives the second nut 223 to rotate. This in turn causes the second nut 223 to drive the second carrier plate 224 and the first drive assembly 21 to move along the second horizontal direction. This screw-nut pair drives the second carrier plate 224, improving movement accuracy. In this embodiment, the movement accuracy of the switching platform 1 along the second horizontal direction is better than 0.05 mm, using a grating ruler for closed-loop control.

[0060] Optionally, the outer periphery of the second screw rod 222 is provided with a second housing 225, and the second nut 223 is located inside the second housing 225. The second housing 225 is used to isolate and protect the second screw rod 222 and the second nut 223 to prevent the outside from affecting the transmission accuracy of the screw rod and nut pair.

[0061] Optionally, the rotation drive mechanism 3 includes a third rotation motor 31 and a second rolling linear slide 33, the third rotation motor 31 is installed on the horizontal adjustment plate 41, the output end of the third rotation motor 31 is installed with a third supporting plate 32, and the second rotation motor 221 is fixedly installed on the third supporting plate 32; the second rolling linear slide 33 is arranged between the third supporting plate 32 and the second supporting plate 224, and the second rolling linear slide 33 extends along the second horizontal direction.

[0062] The precise positioning and adjustment device for measuring the direction of the volume beam in the neutron diffraction experiment is used in pairs. The switching platform 1 of the precise positioning and adjustment device for measuring the direction of the volume beam in the neutron diffraction experiment is equipped with a fine collimator. When conducting a neutron diffraction experiment, it is necessary to align the two fine collimators. After the switching platform 1 is in a horizontal posture, the third supporting plate 32 is driven by the third rotating motor 31. The third supporting plate 32 drives the linear drive mechanism 2 and the switching platform 1 to rotate around the vertical line, and finally aligns the two fine collimators. The second rolling linear slide 33 is provided to improve the stability of the switching platform 1 in moving and adjusting along the second horizontal direction. The third rotating motor 31 drives the third supporting plate 32 through the worm gear, and adjusts the gap error through gap adjustment. The rotation angle is 0-360°. It adopts semi-closed loop control and the rotation accuracy can reach 3mrad.

[0063] Optionally, a third boss is provided on the top of the third bearing plate 32, and third bearing steps are provided on both sides of the third boss. Both third bearing steps are provided with a second rolling linear guide rail 33 to improve the stability of the switching platform 1 in moving and adjusting along the second horizontal direction.

[0064] Optionally, a second boss is provided on the top of the second bearing plate 224, and second bearing steps are provided on both sides of the second boss. Both second bearing steps are provided with a first rolling linear guide rail 23 to improve the stability of the switching platform 1 in moving and adjusting along the first horizontal direction.

[0065] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A device for precisely positioning and adjusting the beam direction in neutron diffraction experiment measurement volume, characterized in that: The neutron diffraction experiment measurement volume beam direction precise positioning adjustment device includes: A switching platform (1), the switching platform (1) being used to carry a fine collimator; A linear drive mechanism (2), wherein the switching platform (1) is mounted at an output end of the linear drive mechanism (2), and the linear drive mechanism (2) is used to drive the switching platform (1) to move along a first horizontal direction and a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction; A rotary drive mechanism (3), wherein the linear drive mechanism (2) is mounted on an output end of the rotary drive mechanism (3), and the rotary drive mechanism (3) is used to drive the linear drive mechanism (2) and the switching platform (1) to rotate around a vertical line; A lifting adjustment mechanism (4), the lifting adjustment mechanism (4) includes a horizontal adjustment plate (41), a bottom plate (42) and a plurality of lifting adjustment components (43), the rotary drive mechanism (3) is mounted on the horizontal adjustment plate (41), the bottom plate (42) is arranged at the bottom of the horizontal adjustment plate (41), the lifting adjustment component (43) is arranged between the horizontal adjustment plate (41) and the bottom plate (42), the lifting adjustment component (43) includes a support column (431), an adjustment member (432) and a locking nut (433), the support column (431) is fixedly mounted on the bottom plate (42), and the support column (431) passes through the horizontal adjustment plate (41) in a vertical direction. The through hole of the section plate (41) is provided, the outer periphery of the support column (431) is provided with an external thread, the adjusting member (432) and the locking nut (433) are both threadedly sleeved on the periphery of the support column (431), the adjusting member (432) is located between the horizontal adjustment plate (41) and the bottom plate (42), the end of the adjusting member (432) facing the horizontal adjustment plate (41) is provided with a spherical body (4321), the side of the horizontal adjustment plate (41) facing the bottom plate (42) is provided with a spherical groove (411) adapted to the spherical body (4321), and the locking nut (433) is located on the side of the horizontal adjustment plate (41) facing away from the bottom plate (42); One end of the adjusting member (432) away from the horizontal adjusting plate (41) is configured as a hexagonal prism (4322); The lifting and adjusting components (43) are arranged in four groups, and the four groups of lifting and adjusting components (43) are respectively located at the four corners of the horizontal adjustment plate (41).

2. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 1, characterized in that: The linear drive mechanism (2) comprises: a first driving component (21), the switching platform (1) being mounted at an output end of the first driving component (21), and the first driving component (21) being used to drive the switching platform (1) to move along the first horizontal direction; a second drive assembly (22), wherein the first drive assembly (21) is mounted on an output end of the second drive assembly (22), and the second drive assembly (22) is used to drive the first drive assembly (21) and the switching platform (1) to move along the second horizontal direction; A first rolling linear slide rail (23), wherein the first rolling linear slide rail (23) is arranged between the first drive assembly (21) and the second drive assembly (22), and the first rolling linear slide rail (23) extends along the first horizontal direction.

3. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 2, characterized in that: The first driving assembly (21) comprises: a first rotating motor (211) mounted on the output end of the second driving assembly (22); a first screw rod (212) mounted on the output end of the first rotating motor (211); the first screw rod (212) extending along the first horizontal direction; a first nut (213) being rotatably sleeved around the periphery of the first screw rod (212); A first bearing plate (214), wherein the first bearing plate (214) is fixedly connected to the first nut (213), and the switching platform (1) is fixedly mounted on the first bearing plate (214).

4. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 3 is characterized in that: The outer peripheral cover of the first screw rod (212) is provided with a first shell (215), and the first nut (213) is located inside the first shell (215).

5. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 3 is characterized in that: The second drive assembly (22) comprises: a second rotary motor (221) mounted on the output end of the rotary drive mechanism (3); a second screw rod (222) mounted on the output end of the second rotary motor (221); the second screw rod (222) extending along the second horizontal direction; a second nut (223) being rotatably sleeved around the circumference of the second screw rod (222); A second bearing plate (224), wherein the second bearing plate (224) is fixedly connected to the second nut (223), the first rotating motor (211) is mounted on the second bearing plate (224), and the first rolling linear guide rail (23) is arranged between the second bearing plate (224) and the first bearing plate (214).

6. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 5, characterized in that: The outer peripheral cover of the second screw rod (222) is provided with a second shell (225), and the second nut (223) is located inside the second shell (225).

7. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 5, characterized in that: The rotary drive mechanism (3) comprises: a third rotating motor (31) mounted on the horizontal adjustment plate (41); a third supporting plate (32) being mounted on the output end of the third rotating motor (31); and the second rotating motor (221) being fixedly mounted on the third supporting plate (32); A second rolling linear slide rail (33), wherein the second rolling linear slide rail (33) is arranged between the third bearing plate (32) and the second bearing plate (224), and the second rolling linear slide rail (33) extends along the second horizontal direction.

8. The device for precisely positioning and adjusting the beam direction in a neutron diffraction experiment measurement volume according to claim 7, characterized in that: A third boss is provided on the top of the third bearing plate (32), third bearing steps are provided on both sides of the third boss, and the second rolling linear guide rail (33) is provided on both third bearing steps.

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