Three-dimensional motion system for high-precision measurement of space dose

Abstract

The invention discloses a three-dimensional motion system for high-precision measurement of space dose, and belongs to the technical field of medical instruments. Comprising a cart assembly, a movable lifting platform and a water tank assembly, the movable lifting platform is arranged on the cart assembly, the water tank assembly is arranged on the movable lifting platform, and the cart assembly is used for transferring the water tank assembly; the movable lifting platform comprises a moving assembly and a lifting assembly, the moving assembly is used for enabling the water tank assembly to move on a plane, the lifting assembly is used for enabling the water tank assembly to ascend and descend in the vertical direction, the water tank assembly comprises a tank body, a three-dimensional scanning assembly, a detector and an encoder assembly, and the three-dimensional scanning assembly is arranged on the tank body; the detector and the encoder assembly are arranged on the three-dimensional scanning assembly, and the three-dimensional scanning assembly is used for enabling the detector to move in the box body in the X direction, the Y direction and the Z direction. The overall size of the three-dimensional motion platform is reduced, the load and non-deformability of equipment are improved, and the precision of a measurement result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a three-dimensional motion system for measuring spatial dose with high precision. Background Art

[0002] At present, in the field of quality inspection and quality control of tumor radiotherapy, in order to accurately measure the radiation dose at each position of the spatial coordinate, it is necessary to use equipment to carry a finger-shaped ionization chamber to move within a certain space to measure the radiation dose at each position. In order to simulate the structure of the human body, it is necessary to simulate the attenuation of the radiation dose in the human body in this space. Since the density of the human body is basically equivalent to that of water, the overall measurement process needs to be moved in a water-filled environment to achieve the actual effect of equivalent human treatment. Since the shape and size of the tumor vary from person to person, the spatial three-dimensional dose distribution needs to be accurately calibrated repeatedly in the treatment plan. Therefore, the measurement position of the ray needs to have more precise requirements in order to better achieve the purpose of accurately eliminating the tumor without harming healthy organs.

[0003] Currently, the existing radiotherapy automatic scanning water phantom 3D motion platforms on the market are mainly divided into two types: cantilever structure and U-shaped structure. The cantilever structure usually uses a belt as a drive, but the accuracy and durability of this belt during operation are often difficult to guarantee; the U-shaped structure uses motion components on both sides to extend into the water and connect to both sides through the cantilever in the middle to achieve motion. The U-shaped structure has more structural components in the water on both sides, and the overall size of the equipment is relatively large.

[0004] The existing technology has the following defects: the existing automatic scanning water phantom three-dimensional motion platform has a significantly increased overall volume due to the need to accommodate a larger water body test environment, which not only affects the portability of the equipment, but also limits its application in different test environments. At the same time, due to the large size of the equipment, the water pumping and release time is long, which affects the test cycle of the experiment, and requires the equipment to have a large load capacity and anti-deformation ability to cope with the pressure of the underwater environment and the weight of the equipment itself, which often makes the selection of materials more complicated. It may also affect the flexibility and response speed of the equipment, which may lead to deviations in the measurement results. Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a three-dimensional motion system for measuring spatial dose with high precision, so as to solve the technical problems that the overall volume of the existing scanning water phantom three-dimensional motion platform is relatively large, the water extraction and release time is relatively long during the experiment, and the equipment needs to have a large load capacity and anti-deformation ability, resulting in deviations in the measurement results.

[0006] The present invention is achieved through the following technical solutions: A three-dimensional motion system for measuring spatial dose with high precision comprises a trolley assembly, a mobile lifting platform and a water tank assembly, wherein the mobile lifting platform is arranged on the trolley assembly, and the water tank assembly is arranged on the mobile lifting platform, and the trolley assembly is used to transport the water tank assembly; the mobile lifting platform comprises a moving assembly and a lifting assembly, the moving assembly is used to move the water tank assembly on a plane, and the lifting assembly is used to lift the water tank assembly in a vertical direction, the water tank assembly comprises a box body, a three-dimensional scanning assembly, a detector and an encoder assembly, the three-dimensional scanning assembly is arranged on the box body, the detector and the encoder assembly are arranged on the three-dimensional scanning assembly, the three-dimensional scanning assembly is used to move the detector in the XYZ directions within the box body, and the encoder assembly is used to provide real-time feedback on the position of the detector to achieve precise adjustment of the detector position.

[0007] Preferably, the moving component includes a moving platform, a Y-axis motor, a first screw rod, a sliding member, a ball linear guide, an X-axis motor, a transmission member, a second screw rod, and a moving member. The lifting end of the lifting component is provided with a lifting plate, the ball linear guide is fixed on the lifting plate, the Y-axis motor is arranged in the moving platform, the Y-axis motor is used to drive the first screw rod to rotate, the sliding member is threadedly installed on the first screw rod, the sliding member and the ball linear guide are slidably matched, the sliding member is fixed to the moving platform, the X-axis motor is arranged on the moving platform, the X-axis motor drives the second screw rod to rotate through the transmission member, the moving member is threadedly installed on the second screw rod, the moving member is fixed to the bottom of the box, and the Y-axis motor, the first screw rod, the sliding member and the ball linear guide are provided in two groups and are located on both sides of the second screw rod.

[0008] Preferably, the three-dimensional scanning component includes an X-direction scanning component, a Y-direction scanning component and a Z-direction scanning component, the X-direction scanning component includes a first motor, a first pulley, a second pulley, a transmission belt, a first screw and a mounting seat, the first motor drives the first pulley to rotate, the first pulley drives the second pulley to rotate via the transmission belt, the second pulley rotates coaxially with the first screw, the first screw is arranged along the X direction of the box, and the mounting seat is threadedly mounted on the first screw; the Z-direction scanning component includes a second motor, a third screw and a connecting seat, the second motor is arranged on the mounting seat, and the second motor is used to drive the first screw Three screws rotate, the third screw is arranged along the Z direction of the box, and the connecting seat is threadedly installed on the third screw; the Y direction scanning component includes a third motor, a first gear, a second gear, a fourth screw, a track and a slider, the third motor is arranged on the connecting seat, the third motor is used to drive the first gear to rotate, the second gear meshes with the first gear to rotate, the fourth screw is coaxially fixed and rotated with the second gear, the fourth screw is arranged along the Y direction of the box, the track is arranged parallel to the fourth screw, the slider is threadedly installed on the fourth screw, and slidably cooperates with the track, and the detector is installed on the slider.

[0009] Preferably, the trolley assembly includes a base plate, support legs, universal wheels and a handle, the support legs are radially fixed at the four corners of the base plate, the universal wheels are arranged at one end of the support legs that are away from each other, the handle is detachably mounted on the base plate, and the bottom of the lifting assembly is detachably mounted on the base plate.

[0010] Preferably, a plurality of groups of through holes distributed at equal intervals are horizontally opened on the track.

[0011] Preferably, a water level sensor is provided at the bottom of the box body. The water level sensor is provided at the four corners of the bottom surface of the box body and is used to feed back the water surface depth information at the position to the control center in real time. The control center keeps the box body in a horizontal position according to the feedback information.

[0012] Preferably, a groove is provided at the bottom edge of the box body, and a drain port is provided at the bottom of the box body, and the drain port is communicated with the groove.

[0013] Preferably, a temperature sensor is provided in the box, and the temperature sensor feeds back measured data to the control center in real time, and the control center corrects the test dosage result according to the feedback information.

[0014] Preferably, an extension portion is also provided on the supporting leg, and the extension portion is plugged and slidably matched with the supporting leg. The supporting leg is provided with a hook, and a slide groove is provided on the extension portion. A limit block is slidably matched in the slide groove, and the hook is hooked and matched with the limit block. A holding portion is also provided on the end of the extension portion away from the supporting leg, and the holding portion is rotatably installed on the extension portion. A cam is provided at the rotating position of the holding portion, and the cam abuts and cooperates with the limit block.

[0015] Preferably, the transmission member includes a first roller, a second roller and a transmission belt, the first roller is coaxially rotatably installed with the output shaft of the X-axis motor, the first roller drives the second roller to rotate through the transmission belt, the second roller is coaxially rotatably installed with the second screw, and the diameter of the second roller is larger than the diameter of the first roller.

[0016] The beneficial effects of the present invention are: 1. The system is portable and flexible through the combination of the cart assembly, the mobile lifting platform and the water tank assembly. The cart assembly is easy to transport, and the mobile lifting platform realizes the movement of the water tank assembly in the plane and vertical directions through the mobile assembly and the lifting assembly. The setting of the mobile assembly can expand the test area on the basis of the original test range of the water tank body, thereby reducing the overall volume of the equipment and the required water volume, thereby reducing the overall weight and water extraction time in the full water state. The coordination of the three-dimensional scanning assembly, the detector and the encoder assembly realizes the three-dimensional movement and precise position adjustment of the detector in the box, thereby solving the portability and flexibility problems of high-precision measurement of spatial dose; 2. The precise movement of the detector in three-dimensional space is ensured by the mutual cooperation of the scanning components in the X, Y and Z directions. This design not only improves the accuracy of measuring spatial doses, but also effectively solves the problems existing in the prior art, such as large equipment size, poor portability, and measurement results being easily affected by equipment size and weight. Specifically, the three-dimensional scanning component of the present application has a compact structure and can achieve high-precision three-dimensional movement in a relatively small space. The moving components in each direction use a combination of screws and motors to ensure the stability and accuracy of movement. 3. By using a water surface sensor to monitor the depth information of the water surface in the water tank in real time and feeding this information back to the control center, the box can be automatically leveled. Compared with the prior art, the technical solution of this application can adjust the position of the box more accurately and timely to ensure that the box always remains horizontal in the water; by setting a temperature sensor in the box, the measured temperature data is fed back to the control center in real time, and the control center can correct the test dosage results based on these data, thereby solving the measurement error problem caused by temperature changes and ensuring the accuracy of the measurement results.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to illustrate the technical solutions disclosed in the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the three-dimensional motion system of the present invention; Figure 2 It is a schematic diagram of the overall structure of the cart assembly of the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 for Figure 2 The enlarged view of point B in the middle; Figure 5 It is a schematic diagram of the overall structure of the mobile lifting platform of the present invention; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 The overall structural diagram of the box assembly of the present invention; Figure 8 for Figure 7 The enlarged view of point D in the middle; Fig. 9 for Figure 7 Enlarged view of point E in the middle; Fig.10 It is a schematic diagram of the overall structure of the box assembly of the present invention from another perspective.

[0021] Legend: 1. Trolley assembly; 11. Bottom plate; 12. Support leg; 13. Universal wheel; 14. Handle; 15. Extension part; 16. Hook; 17. Slide; 18. Limit block; 19. Grip; 20. Cam; 2. Mobile lifting platform; 21. Mobile assembly; 211. Mobile platform; 212. Y-axis motor; 213. First screw rod; 214. Sliding member; 215. Ball linear guide; 216. X-axis motor; 217. Transmission member; 2171. First roller; 2172. Second roller; 2173. Transmission belt; 218. Second screw rod; 219. Mobile member; 22. Lifting assembly; 221. Lifting plate ; 3. Water tank assembly; 31. Box body; 32. Three-dimensional scanning assembly; 321. X-direction scanning assembly; 3211. First motor; 3212. First pulley; 3213. Second pulley; 3214. Transmission belt; 3215. First screw; 3216. Mounting seat; 322. Y-direction scanning assembly; 3221. Third motor; 3222. First gear; 3223. Second gear; 3224. Fourth screw; 3225. Track; 3226. Slider; 3227. Through hole; 323. Z-direction scanning assembly; 3231. Second motor; 3232. Third screw; 3233. Connecting seat; 33. Detector. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", The directions or positional relationships indicated by "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-10 A three-dimensional motion system for measuring spatial dose with high precision includes a cart assembly 1, a mobile lifting platform 2 and a water tank assembly 3. The mobile lifting platform 2 is arranged on the cart assembly 1, and the water tank assembly 3 is arranged on the mobile lifting platform 2. The cart assembly 1 is used to transport the water tank assembly 3; the mobile lifting platform 2 includes a moving assembly 21 and a lifting assembly 22. The moving assembly 21 is used to move the water tank assembly 3 on a plane, and the lifting assembly 22 is used to lift the water tank assembly 3 in a vertical direction. The water tank assembly 3 includes a box body 31, a three-dimensional scanning assembly 32, a detector 33 and an encoder assembly. The three-dimensional scanning assembly 32 is arranged on the box body 31, and the detector 33 and the encoder assembly are arranged on the three-dimensional scanning assembly 32. The three-dimensional scanning assembly 32 is used to move the detector 33 in the box body 31 in the XYZ directions, and the encoder assembly is used to provide real-time feedback on the position of the detector 33 to achieve precise adjustment of the position of the detector 33.

[0030] The operator starts the system through the control interface, and the cart assembly 1 moves to the target position; the moving assembly 21 and the lifting assembly 22 of the mobile lifting platform 2 adjust the position of the water tank assembly 3 according to the set parameters; the three-dimensional scanning assembly 32 drives the detector 33 to move in the XYZ direction in the water tank, and the detector 33 measures the spatial dose in real time; the encoder assembly provides the position information of the detector 33 to ensure the accuracy and real-time performance of the measurement; the measurement data is transmitted to the control system for data analysis and processing.

[0031] The present application makes the system portable and flexible through the combination of the cart assembly 1, the mobile lifting platform 2 and the water tank assembly 3. The cart assembly 1 is easy to transport, and the mobile lifting platform 2 realizes the movement of the water tank assembly 3 in the plane and vertical directions through the mobile assembly 21 and the lifting assembly 22. The setting of the mobile assembly 21 can expand the test area on the basis of the original test range of the water tank body, thereby reducing the overall volume of the equipment and the required water volume, thereby reducing the overall weight and water extraction time in the full water state. The cooperation of the three-dimensional scanning assembly 32, the detector 33 and the encoder assembly realizes the three-dimensional movement and precise position adjustment of the detector 33 in the box 31, thereby solving the portability and flexibility problems of high-precision measurement of spatial dose.

[0032] See also Figure 1 , Figure 5 and Figure 6 In order to perform measurements in a wider area and adapt to different experimental requirements, based on this, in one embodiment, the moving component 21 includes a moving platform 211, a Y-axis motor 212, a first screw rod 213, a sliding member 214, a ball linear guide 215, an X-axis motor 216, a transmission member 217, a second screw rod 218, and a moving member 219. The lifting end of the lifting component 22 is provided with a lifting plate 221, the ball linear guide 215 is fixed on the lifting plate 221, the Y-axis motor 212 is arranged in the moving platform 211, and the Y-axis motor 212 is used to drive the first screw rod 213 to rotate. The sliding member 214 is threadedly mounted on the first screw rod 213, the sliding member 214 slides with the ball linear guide 215, the sliding member 214 is fixed to the moving platform 211, the X-axis motor 216 is arranged on the moving platform 211, the X-axis motor 216 drives the second screw rod 218 to rotate through the transmission member 217, the moving member 219 is threadedly mounted on the second screw rod 218, the moving member 219 is fixed to the bottom of the box body 31, and the Y-axis motor 212, the first screw rod 213, the sliding member 214 and the ball linear guide 215 are arranged in two groups, and are located on both sides of the second screw rod 218.

[0033] By controlling the Y-axis motor 212, the first screw rod 213 is rotated, and the rotation of the first screw rod 213 drives the sliding member 214 to move on the ball linear guide 215, thereby realizing the displacement of the mobile platform 211 relative to the lifting plate 221 in the Y direction. The setting of the two groups of first screw rods 213 realizes the accuracy of the displacement of the mobile platform 211 in the Y direction; by controlling the X-axis motor 216, the transmission member 217 drives the second screw rod 218 to rotate, and the rotation of the second screw rod 218 drives the moving member 219 to generate displacement in the X direction. Since the moving member 219 is fixed to the bottom of the box body 31, the position adjustment of the box body 31 on the plane is realized.

[0034] Through the XY displacement of the mobile component 21, the system can flexibly adjust the position of the detector 33 based on the original test range of the water tank body. This means that measurements can be performed in a wider area to meet different experimental needs; when facing different measurement environments and needs, the position can be quickly adjusted to ensure that the detector 33 can cover all areas that need to be tested; the mobile component 21 can achieve a larger test range in a limited space, reducing the demand for the volume of the water tank body. This optimized design makes the system more compact and suitable for laboratories or field test environments with limited space; the reduction in the overall volume of the equipment makes the system easier to transport and store, enhancing its portability and suitable for use in different places; due to the XY movement function of the mobile component 21, the volume of water required in the water tank when performing measurements can be reduced; the smaller water volume means that the management and treatment of water during the experiment is simpler, reducing the workload of experimental preparation and subsequent cleanup.

[0035] See also Figure 1 and Figure 7-10In order to ensure the movement stability and accuracy of the detector 33, based on this, in one embodiment, the three-dimensional scanning component 32 includes an X-direction scanning component 321, a Y-direction scanning component 322 and a Z-direction scanning component 323. The X-direction scanning component 321 includes a first motor 3211, a first pulley 3212, a second pulley 3213, a transmission belt 3214, a first screw 3215 and a mounting seat 3216. The first motor 3211 drives the first pulley 3212 to rotate, and the first pulley 3212 drives the second pulley 3213 to rotate through the transmission belt 3214. The second pulley 3213 rotates coaxially with the first screw 3215. The first screw 3215 is arranged along the X direction of the box body 31, and the mounting seat 3216 is threadedly installed on the first screw 3215; the Z-direction scanning component 323 includes a second motor 3231, a third screw 3232 and a connecting seat 3233. The second motor 3231 is arranged on the mounting seat 32 16, the second motor 3231 is used to drive the third screw rod 3232 to rotate, the third screw rod 3232 is arranged along the Z direction of the box body 31, and the connecting seat 3233 is threadedly installed on the third screw rod 3232; the Y direction scanning component 322 includes a third motor 3221, a first gear 3222, a second gear 3223, a fourth screw rod 3224, a track 3225 and a slider 3226, the third motor 3221 is arranged on the connecting seat 3233, the third motor 3221 is used to drive the first gear 3222 to rotate, the second gear 3223 is meshed and rotated with the first gear 3222, the fourth screw rod 3224 is coaxially fixed and rotated with the second gear 3223, the fourth screw rod 3224 is arranged along the Y direction of the box body 31, the track 3225 is arranged parallel to the fourth screw rod 3224, the slider 3226 is threadedly installed on the fourth screw rod 3224, and slidably cooperates with the track 3225, and the detector 33 is installed on the slider 3226.

[0036] The technical features of the present application include an X-direction scanning assembly 321, a Y-direction scanning assembly 322, and a Z-direction scanning assembly 323. The X-direction scanning assembly 321 drives the first pulley 3212 to rotate through the first motor 3211, driving the second pulley 3213 and the first screw 3215 to rotate, so that the mounting seat 3216 moves along the X direction. The Z-direction scanning assembly 323 drives the third screw 3232 to rotate through the second motor 3231, so that the connecting seat 3233 moves along the Z direction. The Y-direction scanning assembly 322 drives the first gear 3222 and the second gear 3223 to rotate through the third motor 3221, driving the fourth screw 3224 to rotate, so that the slider 3226 moves along the Y direction, and the detector 33 is installed through the slider 3226. Through the coordination of these technical features, the detector 33 is accurately moved in three-dimensional space, and the technical problem of how to accurately move the detector 33 in three-dimensional space to measure the spatial dose is solved.

[0037] The present application ensures the precise movement of the detector 33 in three-dimensional space through the mutual cooperation of the scanning components 323 in the X direction, Y direction and Z direction. This design not only improves the accuracy of measuring spatial dose, but also effectively solves the problems existing in the prior art, such as large equipment size, poor portability, and measurement results being easily affected by equipment size and weight. Specifically, the three-dimensional scanning component 32 of the present application has a compact structure and can achieve high-precision three-dimensional movement in a smaller space, and the moving components 21 in each direction use a combination of screws and motors to ensure the stability and accuracy of movement.

[0038] See also Figure 2-Figure 4 In order to avoid the circular uneven area at the bottom, reduce the storage volume and facilitate pushing, based on this, in one embodiment, the cart assembly 1 includes a bottom plate 11, support legs 12, universal wheels 13 and handles 14. The support legs 12 are radially fixed at the four corners of the bottom plate 11, the universal wheels 13 are arranged at one end of the support legs 12 away from each other, the handle 14 is detachably mounted on the bottom plate 11, and the bottom of the lifting assembly 22 is detachably mounted on the bottom plate 11.

[0039] The design of the bottom plate 11, support legs 12, universal wheels 13 and handles 14 of the cart assembly 1 enables the equipment to be easily moved and transported. The support legs 12 are radially fixed to the four corners of the bottom plate 11, providing stable support. The universal wheels 13 allow the equipment to be flexibly moved in different directions, and the detachable design of the handle 14 increases the portability of the equipment. The bottom of the lifting assembly 22 is also detachably mounted on the bottom plate 11, so that the entire system can be easily disassembled and assembled when needed, improving the flexibility and adaptability of the equipment. Through the above technical means, the portability and flexibility problems of the equipment are solved, so that the equipment can be easily moved and used in different test environments, and the disassembly and assembly process of the equipment is also simplified, improving the experimental efficiency; under actual test conditions, there is a large circular uneven area on the bottom plate 11 at the test position. In order to ensure the accuracy of the test, the support position of the equipment needs to avoid this area. The setting of the cart assembly 1 avoids the bottom circular uneven area in order to reduce the storage volume and facilitate the implementation.

[0040] Furthermore, the radial design of the support legs 12 allows the base plate 11 to remain stable during movement, preventing the device from tipping over. The provision of the universal wheels 13 allows the device to be flexibly moved in a narrow or complex test environment to meet various test requirements. The detachable design of the handle 14 not only facilitates the promotion and transportation of the device, but can also be removed when not needed, reducing the space occupied by the device. The detachable connection between the bottom of the lifting assembly 22 and the base plate 11 allows the device to be quickly disassembled and reassembled when needed, improving the flexibility and adaptability of the device.

[0041] In order to reduce the resistance of the track 3225 to move in the box 31 and reduce the deformation of the track 3225 during practical use, based on this, in one embodiment, a plurality of groups of equally spaced through holes 3227 are horizontally opened on the track 3225. A plurality of equally spaced through holes 3227 are horizontally opened on the track 3225 to reduce the resistance of the track 3225 to move in the box 31 and reduce the deformation of the track 3225 during practical use. The design of evenly distributed through holes 3227 on the track 3225 can be achieved in a variety of ways. For example, the through holes 3227 can be achieved by laser cutting, drilling and other technical means. The shape of the through holes 3227 can be circular, elliptical or other shapes to meet different application requirements. The spacing and size of the through holes 3227 can be adjusted according to the specific use environment to achieve the best drag reduction and deformation reduction effect.

[0042] By horizontally opening a plurality of groups of equally spaced through holes 3227 on the track 3225, the resistance of the track 3225 when moving in the box 31 can be effectively reduced, and the deformation of the track 3225 during use can be reduced, thereby improving the accuracy and stability of the device. At the same time, this design can also simplify the manufacturing process and reduce production costs. Compared with the prior art, the design of the present application has higher practicality and economy while improving the performance and reliability of the device.

[0043] In order to monitor the depth information of the water surface in the water tank in real time and realize the automatic leveling of the box 31, based on this, in one embodiment, a water surface sensor is arranged at the bottom of the box 31, and the water surface sensor is arranged at the four corners of the bottom of the box 31, which is used to feed back the water surface depth information at this position to the control center in real time, and the control center keeps the box 31 in a horizontal position according to the feedback information. The water surface sensor arranged at the bottom of the box 31 is used to monitor the depth information of the water surface in the water tank in real time. The water surface sensor is installed at the four corners of the bottom of the box 31 to ensure that the changes of the water surface can be fully monitored. The sensor feeds back the monitored water surface depth information to the control center in real time, and the control center adjusts the position of the box 31 according to the feedback information to keep it horizontal. Through this technical means, the problem of how to monitor the depth information of the water surface in the water tank in real time and keep the box 31 in a horizontal position can be effectively solved. The arrangement of the water surface sensor and the real-time feedback mechanism ensure that the box 31 can remain stable and horizontal during the measurement process, thereby improving the accuracy and reliability of the measurement.

[0044] Water surface sensors can be of various types, such as ultrasonic sensors, laser sensors, or capacitive sensors. Specifically, ultrasonic sensors measure the distance to the water surface by emitting and receiving ultrasonic waves, laser sensors use the reflection principle of lasers for measurement, and capacitive sensors obtain the height of the water surface by detecting changes in capacitance. Each sensor has its advantages and applicable scenarios. For example, ultrasonic sensors are suitable for larger range measurements, laser sensors have higher accuracy, and capacitive sensors have higher sensitivity.

[0045] By using a water surface sensor to monitor the depth information of the water surface in the water tank in real time and feeding this information back to the control center, the automatic leveling of the box 31 can be achieved. Compared with the prior art, the technical solution of the present application can adjust the position of the box 31 more accurately and timely, ensuring that the box 31 always remains horizontal in the water. In this way, the accuracy and reliability of the measurement can be improved, the error can be reduced, and the performance and user experience of the overall system can be improved.

[0046] In order to achieve rapid drainage and reduce the residence time of water in the device, based on this, in one embodiment, a groove is provided at the bottom edge of the box body 31, and a drain port is provided at the bottom of the box body 31, and the drain port is connected to the groove. A groove is provided at the bottom edge of the box body 31, and a drain port is provided at the bottom of the box body 31, and the drain port is connected to the groove. This design guides the water to the drain port through the groove, and then discharges the water out of the box body 31 through the drain port. This structural design can achieve rapid drainage, reduce the residence time of the equipment in the water, and achieve the effect of rapid drying through the siphon effect. Through this design, the drainage problem of the equipment in the water can be effectively solved to ensure the normal operation of the equipment.

[0047] Grooves can be made in a variety of shapes and sizes to accommodate different drainage needs. For example, grooves can be designed in rectangular, circular, or other geometric shapes and optimized for the specific environment in which the equipment is used. Drains can be set at the lowest point of the groove to ensure that water can flow out smoothly. In addition, drains can be equipped with filters or valves to prevent debris from entering the system and ensure smooth drainage. The materials of the grooves and drains can be corrosion-resistant materials such as stainless steel or high-strength plastics to extend the service life of the equipment.

[0048] Based on this, in one embodiment, a temperature sensor is provided in the box 31, and the temperature sensor feeds back the measured data to the control center in real time, and the control center corrects the test dose result according to the feedback information. The present application includes the following technical features: a temperature sensor is provided in the box 31, and the temperature sensor feeds back data to the control center in real time, and the control center corrects the test dose result according to the feedback information. The function of these features is to enable the control center to correct the measurement results according to the temperature changes by real-time monitoring of the temperature changes and feeding back to the control center, thereby ensuring the accuracy of the measurement. By providing a temperature sensor in the box 31, the measured temperature data is fed back to the control center in real time, and the control center can correct the test dose results according to these data, thereby solving the problem of measurement error caused by temperature changes and ensuring the accuracy of the measurement results.

[0049] The temperature sensor can adopt various types of sensors, such as thermocouples, thermistors or infrared temperature sensors. Specifically, thermocouples can determine the temperature by measuring the temperature difference between the contact points of two different metals, thermistors measure the temperature by the characteristic that the resistance value changes with the temperature, and infrared temperature sensors determine the temperature by detecting the infrared radiation emitted by the object. The temperature sensor can be installed at different positions of the box 31, such as the inner wall, bottom or top of the box 31, to ensure that the temperature changes in the box 31 can be accurately monitored. The signal of the temperature sensor can be transmitted to the control center by wire or wirelessly. After receiving the temperature data, the control center corrects the measurement result by a preset correction algorithm.

[0050] In order to improve the portability and adaptability of the system and adapt to different testing environments, based on this, in one embodiment, an extension portion 15 is further provided on the support leg 12, and the extension portion 15 is plugged and slidably matched with the support leg 12, a hook 16 is provided on the support leg 12, and a slide groove 17 is provided on the extension portion 15, and a limit block 18 is slidably matched in the slide groove 17, and the hook 16 is hooked and matched with the limit block 18. A gripping portion 19 is also provided at one end of the extension portion 15 away from the support leg 12, and the gripping portion 19 is rotatably installed on the extension portion 15, and a cam 20 is provided at the rotation position of the gripping portion 19, and the cam 20 is abutted and matched with the limit block 18.

[0051] The extension part 15 is connected to the support leg 12 by means of plug-in sliding cooperation. The limit block 18 provided in the slide groove 17 can slide in the slide groove 17, thereby realizing the extension and retraction of the extension part 15. The hook 16 and the limit block 18 are hooked and cooperated to ensure the fixation and stability of the extension part 15 during use. The gripping part 19 is installed on the extension part 15 by rotation, and can be adjusted to different angles. The abutment cooperation between the cam 20 and the limit block 18 ensures the stability and safety of the gripping part 19 during the adjustment process. Specifically, the extension part 15 can be made of aluminum alloy material, which is light and strong. The slide groove 17 and the limit block 18 can be made of wear-resistant material to increase the service life. The design of the gripping part 19 can be optimized according to ergonomics to ensure the comfort and convenience of operation.

[0052] Through these designs, the portability and adaptability of the device of the present application have been significantly improved. The design of the extension portion 15 of the support leg 12 allows the device to be adjusted in different spaces to adapt to different testing environments. The cooperation of the hook 16 and the limit block 18 ensures the stability of the device during use and avoids the risk of accidental sliding or falling off. The design of the grip portion 19 improves the ease of operation of the device, allowing users to easily move and adjust the position of the device. Compared with the prior art, the device of the present application has obvious advantages in portability, stability and ease of operation, and effectively solves the shortcomings of the prior art.

[0053] In order to reduce the mechanical errors in the intermediate links and effectively improve the transmission accuracy, based on this, in one embodiment, the transmission member 217 includes a first roller 2171, a second roller 2172 and a transmission belt 2173. The first roller 2171 is coaxially rotatably installed with the output shaft of the X-axis motor 216. The first roller 2171 drives the second roller 2172 to rotate through the transmission belt 2173. The second roller 2172 is coaxially rotatably installed with the second screw rod 218, and the diameter of the second roller 2172 is greater than the diameter of the first roller 2171.

[0054] Furthermore, the first roller 2171 is coaxially rotatably mounted with the output shaft of the X-axis motor 216. Such a design ensures that the motor can directly drive the first roller 2171 when rotating, thereby reducing the mechanical error of the intermediate link. The transmission belt 2173 connects the first roller 2171 and the second roller 2172, and transmits power from the first roller 2171 to the second roller 2172 through the transmission characteristics of the belt. The first roller 2171 is coaxially rotatably mounted with the output shaft of the X-axis motor 216, the transmission belt 2173 drives the second roller 2172 to rotate, the second roller 2172 is coaxially rotatably mounted with the second screw rod 218, and the diameter of the second roller 2172 is greater than the diameter of the first roller 2171. The present application can effectively improve the transmission accuracy and solve the problem of insufficient transmission accuracy in the prior art.

[0055] Through the design of the transmission member 217, the first roller 2171 rotates coaxially with the output shaft of the X-axis motor 216, the transmission belt 2173 transmits power to the second roller 2172, and the second roller 2172 rotates coaxially with the second screw 218. The diameter of the second roller 2172 is larger than the diameter of the first roller 2171, which can achieve a more efficient transmission effect and ensure that the system has higher accuracy in the three-dimensional movement of high-precision measurement of spatial dose.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A three-dimensional motion system for high-precision measurement of spatial dose, characterized in that: It includes a cart assembly, a mobile lifting platform and a water tank assembly, the mobile lifting platform is arranged on the cart assembly, the water tank assembly is arranged on the mobile lifting platform, and the cart assembly is used to transport the water tank assembly; the mobile lifting platform includes a moving assembly and a lifting assembly, the moving assembly is used to move the water tank assembly on a plane, the lifting assembly is used to lift the water tank assembly in a vertical direction, the water tank assembly includes a box body, a three-dimensional scanning assembly, a detector and an encoder assembly, the three-dimensional scanning assembly is arranged on the box body, the detector and the encoder assembly are arranged on the three-dimensional scanning assembly, the three-dimensional scanning assembly is used to move the detector in the XYZ directions within the box body, and the encoder assembly is used to provide real-time feedback on the position of the detector to achieve precise adjustment of the detector position.

2. A three-dimensional motion system for high-precision spatial dose measurement according to claim 1, characterized in that: The moving assembly includes a moving platform, a Y-axis motor, a first screw rod, a sliding member, a ball linear guide, an X-axis motor, a transmission member, a second screw rod, and a moving member. A lifting plate is provided at the lifting end of the lifting assembly, the ball linear guide is fixed on the lifting plate, the Y-axis motor is arranged in the moving platform, the Y-axis motor is used to drive the first screw rod to rotate, the sliding member is threadedly mounted on the first screw rod, the sliding member is slidably matched with the ball linear guide, the sliding member is fixed to the moving platform, the X-axis motor is arranged on the moving platform, the X-axis motor drives the second screw rod to rotate through a transmission member, the moving member is threadedly mounted on the second screw rod, the moving member is fixed to the bottom of the box, and the Y-axis motor, the first screw rod, the sliding member and the ball linear guide are provided in two groups and are located on both sides of the second screw rod.

3. A three-dimensional motion system for high-precision spatial dose measurement according to claim 2, characterized in that: The three-dimensional scanning component includes an X-direction scanning component, a Y-direction scanning component and a Z-direction scanning component. The X-direction scanning component includes a first motor, a first pulley, a second pulley, a transmission belt, a first screw and a mounting seat. The first motor drives the first pulley to rotate, the first pulley drives the second pulley to rotate via the transmission belt, the second pulley rotates coaxially with the first screw, the first screw is arranged along the X direction of the box, and the mounting seat is threadedly mounted on the first screw; the Z-direction scanning component includes a second motor, a third screw and a connecting seat, the second motor is arranged on the mounting seat, and the second motor is used to drive the third screw The rod rotates, the third screw rod is arranged along the Z direction of the box body, and the connecting seat is threadedly installed on the third screw rod; the Y direction scanning component includes a third motor, a first gear, a second gear, a fourth screw rod, a track and a slider, the third motor is arranged on the connecting seat, the third motor is used to drive the first gear to rotate, the second gear is meshed with the first gear to rotate, the fourth screw rod is coaxially fixed and rotated with the second gear, the fourth screw rod is arranged along the Y direction of the box body, the track is arranged parallel to the fourth screw rod, the slider is threadedly installed on the fourth screw rod, and slides with the track, and the detector is installed on the slider.

4. A three-dimensional motion system for high-precision spatial dose measurement according to claim 3, characterized in that: The cart assembly includes a base plate, support legs, universal wheels and a handle. The support legs are radially fixed at the four corners of the base plate. The universal wheels are arranged at one end of the support legs that are away from each other. The handle is detachably mounted on the base plate. The bottom of the lifting assembly is detachably mounted on the base plate.

5. A three-dimensional motion system for high-precision spatial dose measurement according to claim 3, characterized in that: A plurality of groups of through holes distributed at equal intervals are horizontally opened on the track.

6. A three-dimensional motion system for high-precision spatial dose measurement according to claim 5, characterized in that: A water surface sensor is provided at the bottom of the box body. The water surface sensor is provided at the four corners of the bottom surface of the box body and is used to feed back the water surface depth information at the position to the control center in real time. The control center keeps the box body in a horizontal position according to the feedback information.

7. A three-dimensional motion system for high-precision spatial dose measurement according to claim 1, characterized in that: A groove is arranged at the bottom edge of the box body, and a drain port is arranged at the bottom of the box body, and the drain port is communicated with the groove.

8. The three-dimensional motion system for high-precision spatial dose measurement according to claim 1, characterized in that: A temperature sensor is provided in the box, and the temperature sensor feeds back measured data to the control center in real time, and the control center corrects the test dosage result according to the feedback information.

9. A three-dimensional motion system for high-precision spatial dose measurement according to claim 4, characterized in that: The supporting leg is also provided with an extension portion, which is plugged and slidably engaged with the supporting leg, the supporting leg is provided with a hook, and the extension portion is provided with a slide groove, which slides and engages with a limit block, and the hook is engaged and engaged with the limit block. The extension portion is also provided with a gripping portion at one end away from the supporting leg, and the gripping portion is rotatably installed on the extension portion. A cam is provided at the rotating position of the gripping portion, and the cam abuts and engages with the limit block.

10. The three-dimensional motion system for high-precision spatial dose measurement according to claim 2, characterized in that: The transmission member includes a first roller, a second roller and a transmission belt. The first roller is coaxially rotatably installed with the output shaft of the X-axis motor. The first roller drives the second roller to rotate through the transmission belt. The second roller is coaxially rotatably installed with the second screw rod. The diameter of the second roller is larger than the diameter of the first roller.

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