Rotating disc type X-ray radiation filter switching device

Abstract

The embodiment of the utility model provides a rotating disc type X-ray radiation filter switching device. The rotating disc type X-ray radiation filter switching device comprises a first disc, a rotation driving device and a lifting driving device, the rotation driving device is mounted on a lifting part of the lifting driving device; the first disc is coaxially mounted on a rotating part of the rotating driving device; a plurality of groups of filtering holes are formed in the first disc, each group of filtering holes comprises a plurality of filtering holes, the plurality of filtering holes in each group of filtering holes are uniformly distributed in a corresponding first virtual circumference, the first virtual circumference corresponding to each group of filtering holes is concentric with the first disc, and the radiuses of the first virtual circumferences corresponding to each group of filtering holes are different; and filtering sheets with different specifications are mounted in the filtering holes at different positions.

Description

Technical Field

[0001] The utility model relates to the field of X-ray radiation equipment, and particularly relates to a turntable type X-ray radiation filter switching device. Background Art

[0002] In the prior art, some X-ray radiation devices only have one filter position. When different specifications of filters are needed, manual replacement is required each time. There are also some X-ray radiation devices that provide multiple filters. However, due to the limitations of the layout space of the filters and the switching mechanism by the installation space inside the X-ray radiation device, the number of filters that can be covered cannot meet the actual requirements. When the number of filters required actually exceeds the number of filters in the current device, manual replacement of the filters is still needed.

[0003] In the process of implementing the present utility model, the applicant found that there are at least the following problems in the prior art:

[0004] How to provide more filter specifications with optional types in the limited space of the device to achieve automatic switching of the vast majority of filter specifications required. Content of the Utility Model

[0005] The embodiment of the present utility model provides a turntable type X-ray radiation filter switching device, which solves the problem of providing more filter specifications with optional types in the limited space of the device to achieve automatic switching of the vast majority of filter specifications required.

[0006] To achieve the above object, on the one hand, the embodiment of the present utility model provides a turntable type X-ray radiation filter switching device, including: a first disc, a rotation driving device, and a lifting driving device;

[0007] The rotation driving device is installed on the lifting component of the lifting driving device;

[0008] The first disc is installed on the rotating component of the rotation driving device in a coaxial manner;

[0009] Multiple groups of filter holes are arranged on the first disc. Each group of filter holes includes a plurality of filter holes. The plurality of filter holes in each group of filter holes are evenly distributed on the corresponding first virtual circumference. The first virtual circumference corresponding to each group of filter holes is concentric with the first disc. The radii of the first virtual circumferences corresponding to each group of filter holes are different, and different specifications of filters are installed in the filter holes at different positions.

[0010] The above technical solution has the following beneficial effects: Multiple filter holes are distributed on multiple first virtual circumferences, and different filter sheets are installed in each filter hole. Multiple filter holes (installed with filter sheets) are arranged on the first disc. By lifting the lifting drive device, the filter sheets on different first virtual circumferences can be selected, and by rotating the rotation drive device, different filter sheets on the first virtual circumference can be selected, so as to arrange more filter sheets on a first disc with a limited size and realize automatic switching of filter sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 is an exploded view of a turntable type X-ray radiation filter sheet switching device according to one embodiment of the present invention, viewed from the left front;

[0013] Figure 2 is a structural diagram of the first disc according to one embodiment of the present invention;

[0014] Figure 3 is an exploded view of a turntable type X-ray radiation filter sheet switching device according to one embodiment of the present invention, viewed from the right front;

[0015] Figure 4 is a structural diagram of the lifting drive device according to one embodiment of the present invention;

[0016] Figure 5 is a structural diagram of the lifting component according to one embodiment of the present invention;

[0017] Figure 6 is a structural diagram of the rotation drive device according to one embodiment of the present invention;

[0018] Figure 7 is an assembly diagram of a turntable type X-ray radiation filter sheet switching device according to one embodiment of the present invention.

[0019] The reference numerals are shown as follows: 1. the first disc; 2. the rotation driving device; 3. the lifting driving device; 31. the lifting component; 21. the rotating component; 11. the filtering holes; 4. the second disc; 22. the bottom plate; 41. the cylinder; 12. the first through hole; 42. the first position detecting device; 13. the second position detecting device; 14. the first cylinder; 32. the lifting device housing; 33. the first driving motor; 34. the first gear reducer; 35. the lead screw; 36. the moving block; 37. the slide rail; 38. the slider; 23. the second driving motor; 24. the second gear reducer; 25. the worm. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1 and Figure 7 shown, the embodiment of the present invention provides a turntable type X-ray radiation filter switching device, including: the first disc 1, the rotation driving device 2, and the lifting driving device 3;

[0022] The rotation driving device 2 is installed on the lifting component 31 of the lifting driving device 3; wherein the lifting driving device 3 includes a lifting component 31 that performs lifting movement;

[0023] The first disc 1 is coaxially installed on the rotating component 21 of the rotation driving device 2; wherein the rotation driving device 2 includes a rotating component 21 that performs rotational movement;

[0024] A plurality of groups of filtering holes 11 are provided on the first disc 1. Each group of filtering holes 11 includes a plurality of filtering holes 11. The plurality of filtering holes 11 in each group of filtering holes 11 are evenly distributed on the corresponding first virtual circumference. The first virtual circumference corresponding to each group of filtering holes 11 is concentric with the first disc 1. The radii of the first virtual circumferences corresponding to each group of filtering holes 11 are different, and filtering sheets of different specifications are installed in the filtering holes 11 at different positions.

[0025] In some embodiments, the switching device is used for switching filter plates in a rotary X-ray radiation device. An X-ray emitter is built in the rotary X-ray radiation device, and the X-rays emitted by the X-ray emitter propagate along a preset optical path. The lifting component of the lifting drive device makes a linear reciprocating motion, and the motion path of the lifting component intersects with the preset optical path of the X-rays. When the lifting component moves up and down, it drives the first disk to move up and down synchronously. The disk surface of the first disk is perpendicular to the preset optical path of the X-rays. By adjusting the different lifting heights of the lifting component, the preset optical path of the X-rays can be vertically irradiated on a certain first virtual circumference on the first disk. By adjusting the rotating component of the rotation drive device, the first disk can be rotated, so that a certain filter plate on the first virtual circumference is directly facing the preset optical path of the X-rays, so that the X-rays pass through the filtration of the filter plate. This embodiment makes full use of the limited disk surface space of the first disk, provides more filter plates, can significantly reduce manual replacement of filter plates during use, and even provides significantly more filter plates in a limited space, so as to be able to almost completely cover various specifications of filter plates that may be used, so as to realize automatic switching of almost all specifications of filter plates that may be used.

[0026] The embodiment of the utility model has the following technical effects: A plurality of filter holes are distributed on a plurality of first virtual circumferences, and different filter plates are installed in each filter hole. The plurality of filter holes (filter plates) are arranged on the first disk. By lifting of the lifting drive device, filter plates on different first virtual circumferences are selected. By rotation of the rotation drive device, different filter plates on the first virtual circumference are selected, so as to arrange more filter plates on a first disk with a limited size and realize automatic switching of filter plates.

[0027] Further, in a state where the lifting component 31 of the lifting drive device 3 rises to the highest position or drops to the lowest position, the whole of the rotation drive device 2 and the lifting drive device 3 is within the disk surface range of the first disk 1.

[0028] In some embodiments, the lifting drive device and the rotation drive device are compactly installed and both are limited within the disk surface range of the first disk, so that the overall volume of the switching device is small, that is, the limited disk surface of the first disk is fully utilized, and the space required for switching movement is not significantly increased.

[0029] Further, as Figure 2 shown, the filter holes 11 on different first virtual circumferences are aligned radially according to the first disk 1;

[0030] For each first virtual circumference, the radii of the filter holes 11 on the first virtual circumference are the same;

[0031] The radial distance between two adjacent first virtual circumferences is greater than the sum of the radii of one filtering hole 11 on each of the two adjacent first virtual circumferences.

[0032] In some embodiments, the filtering holes on different virtual circumferences may be radially misaligned. For example, they may be distributed in a triangular pattern. Thus, the radial distance between adjacent first virtual circumferences can be less than the sum of the radii of the filtering holes on the two first virtual circumferences. More first virtual circumferences and thus more filtering holes (filtering sheets) can be arranged on the limited surface of the first disc. In this case, a more complex control logic for automatically switching the filtering sheets is required to accurately position each filtering sheet. In other embodiments, the filtering holes on different virtual circumferences can be arranged to be radially aligned. In this way, along the lifting path of the lifting component, it is directly opposite to a set of filtering (hole) sheets from different first virtual circumferences, thereby simplifying the control logic for automatically switching the filtering sheets.

[0033] Furthermore, as Figure 3 shown, the switching device further includes: a second disc 4; the rotation driving device 2 includes a bottom plate 22, and the bottom plate 22 is installed on the lifting component 31 of the lifting driving device 3; the rotating component 21 is rotatably connected to the bottom plate 22;

[0034] The second disc 4 is coaxially provided with a cylinder 41, and the cylinder 41 passes through a first through hole 12 provided on the first disc 1 and is connected to the bottom plate 22;

[0035] The second disc 4 is coaxial with the first disc 1, and the radius of the second disc 4 is less than or equal to a preset radius; the preset radius is the radius of the first virtual circumference with the smallest radius minus the radius of the filtering hole 11 on the first virtual circumference with the smallest radius; wherein, for each first virtual circumference, the radius of the filtering hole 11 on the first virtual circumference is the same;

[0036] A plurality of first position detection devices 42 are arranged on the inner side surface of the second disc 4, and the plurality of first position detection devices 42 are evenly distributed on a second virtual circumference concentric with the second disc 4; the inner side surface of the second disc 4 is the side surface of the second disc 4 facing the first disc 1;

[0037] A second position detection device 13 is arranged on the side surface of the first disc 1 facing the second disc 4; the radial distance from the second position detection device 13 to the axis of the first disc 1 is greater than or less than the radius of the second virtual circumference.

[0038] Preferably, the number of the first position detection devices is the same as that of the filter holes on the outermost first virtual circumference, and the distribution angle is the same as the distribution angle of the filter holes on the outermost first virtual circumference.

[0039] In some embodiments, in order to automatically switch the filter sheets, it is necessary to be able to automatically locate the positions of the filter sheets. For the selection of different first virtual circumferences, the lifting step value of the lifting device can be controlled according to the distance between the first virtual circumferences for accurate positioning. For the selection of different filter sheets on the same first virtual circumference, it can also be positioned by controlling the angular step value of the rotation driving device according to the angular difference between adjacent filter sheets relative to the center of the circle of the first virtual circumference. In order to more accurately position different filter sheets on the same first virtual circumference, the embodiment of the present invention provides a plurality of first position detection devices and a second position detection device. Through the mutual cooperation of the first position detection device and the second position detection device, the angle of rotation of the first disc relative to the second disc can be accurately detected, so as to more accurately position the filter holes on the first virtual circumference. The first position detection device and the second position detection device can be the emitting end and the receiving end of a photodetector. The first position detection device can also be a travel switch, and the second position detection device is a stopper cooperating with the travel switch; when a certain first position detection device is facing the second position detection device, a photoelectric signal or a travel switch pressing signal is obtained, so that the precise positions of the filter sheets on the first disc can be determined.

[0040] Further, as Figure 1 and Figure 3 shown, on the first disc 1, a first cylinder 14 coaxial with the first disc 1 is provided; the second disc 4 is installed in the first cylinder 14; the radius of the first cylinder 14 is equal to the radius of the second disc 4.

[0041] In some embodiments, when the first position detection device and the second position detection device are the emitting end and the receiving end of a photodetector, in order to avoid the influence of external ambient light on the detection, the first cylinder provides a relatively enclosed working environment for the first position detection device and the second position detection device. Without the interference of external ambient light, the detection is more accurate and the signal will not be mis-triggered.

[0042] Further, as Figure 4 and Figure 5As shown in the figure, the lifting drive device 3 includes: a lifting device housing 32, a first drive motor 33 installed inside the lifting device housing 32, a first gear reducer 34 connected to the output rotating shaft of the first drive motor 33, a lead screw 35 driven by the first gear reducer 34, a moving block 36 that translates as the lead screw rotates, a lifting component 31 connected to the moving block, slide rails 37 arranged in parallel with the lead screw and symmetrically disposed on both sides of the lead screw, and sliders 38 sleeved on the slide rails 37 and sliding thereon; the lifting component 31 is connected to the moving block 36 and the sliders 38; the lifting component 31 is specifically a lifting plate; the lifting device housing 32 is used to fix the switching device to the X-ray emitting device.

[0043] In some embodiments, the lifting plate is driven to lift by the moving block, and the sliders on the two side slide rails provide additional stable support for the lifting plate to prevent the lifting plate from swaying. The switching device is fixed to the inside of the X-ray emitting device (such as an X-ray machine) through the lifting device housing 32.

[0044] Further, as Figure 6 shown, the rotation drive device 2 includes: a bottom plate 22, a second drive motor 23 arranged on the bottom plate 22, a second gear reducer 24 connected to the output rotating shaft of the second drive motor 23, a worm 25 driven by the second gear reducer 24, and a rotating component 21 driven by the worm 25; wherein, the rotating component 21 of the rotation drive device 2 is specifically a turbine, and the bottom plate 22 is connected to the lifting component 31.

[0045] Further, as Figure 2 shown, the switching device is installed in a rotary X-ray radiation device. The dimensions of the rotary X-ray radiation device in terms of length × width × height are 1200 mm × 800 mm × 1900 mm (millimeters); the diameter of the first disc 1 is 1070 mm, the diameter of the second disc 4 is 500 mm, and the diameter of each filter hole is 63 mm; there are two layers of filter holes on the first virtual circumference. The outer layer of the first virtual circumference is provided with 36 filter holes, and the inner layer of the first virtual circumference is provided with 18 filter holes.

[0046] In some other embodiments, more layers of the first virtual circumference can be provided, and the number of filter holes in each virtual circumference can be the same or different.

[0047] It should be understood that the specific order or hierarchy of steps in the disclosed process is an instance of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The appended method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy recited.

[0048] In the above detailed description, various features are combined in a single embodiment to simplify the present disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly recited in each claim. On the contrary, as reflected in the appended claims, the present invention lies in a state less than all the features of the disclosed single embodiment. Therefore, the appended claims are hereby expressly incorporated into the detailed description, where each claim stands alone as a separate preferred embodiment of the present invention.

[0049] In order for any person skilled in the art to implement or use the present invention, the above-described disclosed embodiments have been described. For those skilled in the art; various modifications of these embodiments are obvious, and the general principles defined herein can also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0050] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but those of ordinary skill in the art should recognize that the various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the manner in which this term is encompassed is similar to the term "including". In addition, any term "or" used in the claims or the specification is intended to mean "non-exclusive or".

[0051] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rotating disk type X-ray radiation filter switching device, characterized in that: include: A first disc (1), a rotation drive device (2), and a lifting drive device (3); The rotary drive device (2) is mounted on a lifting component (31) of the lifting drive device (3); The first disc (1) is coaxially mounted on a rotating component (21) of the rotating drive device (2); A plurality of groups of filter holes (11) are arranged on the first disk (1), each group of filter holes (11) comprises a plurality of filter holes (11), the plurality of filter holes (11) in each group of filter holes (11) are evenly distributed on a corresponding first virtual circumference, the first virtual circumference corresponding to each group of filter holes (11) is concentric with the first disk (1), the radii of the first virtual circumferences corresponding to the groups of filter holes (11) are different, and filter plates of different specifications are installed on the filter holes (11) at different positions.

2. The rotating disk type X-ray radiation filter switching device according to claim 1, characterized in that: When the lifting component (31) of the lifting drive device (3) is raised to the highest position or lowered to the lowest position, the entirety of the rotation drive device (2) and the lifting drive device (3) are within the disk surface of the first disk (1).

3. The rotating disk type X-ray radiation filter switching device according to claim 1, characterized in that: The filter holes (11) on different first virtual circles are aligned in the radial direction of the first disk (1); For each first virtual circle, the radius of the filter holes (11) on the first virtual circle is the same; The radial distance between two adjacent first virtual circles is greater than the sum of the radii of each filter hole (11) on the two adjacent first virtual circles.

4. The rotating disk type X-ray radiation filter switching device according to claim 1, characterized in that: The switching device further comprises: a second disk (4); the rotation drive device (2) comprises a bottom plate (22), the bottom plate (22) being mounted on a lifting component (31) of the lifting drive device (3); the rotating component (21) being rotationally connected to the bottom plate (22); The second disc (4) is coaxially provided with a cylinder (41), and the cylinder (41) passes through a first through hole (12) provided on the first disc (1) and is connected to the bottom plate (22); The second disk (4) is coaxial with the first disk (1), and the radius of the second disk (4) is less than or equal to a preset radius; the preset radius is the radius of the first virtual circle with the smallest radius minus the radius of the filter hole (11) on the first virtual circle with the smallest radius; wherein, for each first virtual circle, the radius of the filter hole (11) on the first virtual circle is the same; A plurality of first position detection devices (42) are arranged on the inner side surface of the second disk (4), and the plurality of first position detection devices (42) are evenly distributed on a second virtual circumference cocentric with the second disk (4); the inner side surface of the second disk (4) is the side surface of the second disk (4) facing the first disk (1); A second position detection device (13) is provided on the side of the first disk (1) facing the second disk (4); the radial distance between the second position detection device (13) and the axis of the first disk (1) is greater than or less than the radius of the second virtual circle.

5. The rotating disk type X-ray radiation filter switching device according to claim 4, characterized in that: A first cylinder (14) coaxial with the first disk (1) is arranged on the first disk (1); the second disk (4) is installed in the first cylinder (14); the radius of the first cylinder (14) is equal to the radius of the second disk (4).

6. The rotating disk type X-ray radiation filter switching device according to claim 1, characterized in that: The lifting drive device (3) comprises: a lifting device housing (32), a first drive motor (33) installed in the lifting device housing (32), a first gear reducer (34) connected to the output shaft of the first drive motor (33), a lead screw (35) driven by the first gear reducer (34), a moving block (36) that moves in translation with the rotation of the lead screw, a lifting component (31) connected to the moving block, a slide rail (37) parallel to the lead screw and symmetrically arranged on both sides of the lead screw, and a slider (38) that slides on the slide rail (37); the lifting component (31) is connected to the moving block (36) and the slider (38).

7. The rotating disk type X-ray radiation filter switching device according to claim 1, characterized in that: The rotation drive device (2) comprises: a base plate (22), a second drive motor (23) arranged on the base plate (22), a second gear reducer (24) connected to the output shaft of the second drive motor (23), a worm (25) driven by the second gear reducer (24), and a rotating component (21) driven by the worm (25); wherein the rotating component (21) of the rotation drive device (2) is specifically a turbine, and the base plate (22) is connected to the lifting component (31).

8. The rotating disk type X-ray radiation filter switching device according to claim 4, characterized in that: The switching device is installed in a turntable X-ray radiation device, and the length×width×height dimensions of the turntable X-ray radiation device are 1200mm×800mm×1900mm; the diameter dimension of the first disc is 1070mm, the diameter dimension of the second disc is 500mm, and the diameter dimension of each filter hole is 63mm; two layers of first virtual circular filter holes are provided, the outer first virtual circle is provided with 36 filter holes, and the inner first virtual circle is provided with 18 filter holes.

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