X-ray machine collimating device capable of continuously changing constraint angle

Abstract

The utility model discloses an X-ray machine collimation device capable of continuously changing a constraint angle, which comprises a mounting plate group, a ray hole is formed in the mounting plate group, a constraint device group is arranged on the mounting plate group, and the constraint device group is positioned at the edge of the ray hole and is in sliding connection with the mounting plate group; a pushing adjusting mechanism is arranged on the side face of the restraint device set, and the pushing adjusting mechanism can push the restraint device set to slide in a reciprocating mode in the direction of the ray hole. According to the utility model, the diameter of the ray is restrained through the continuously variable restraint device, so that the collimator can adapt to the change of rays with more specifications on the basis of not replacing the collimator.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray digital imaging, in particular to an X-ray machine collimation device with a continuously variable constraint angle. Background Art

[0002] X-ray digital imaging technology has been widely applied in substations, mainly used for detecting the structural defects of gas-insulated switchgear (GIS). The current equipment used is a portable X-ray machine, with a maximum tube voltage of 300 kV and a maximum power of 900 W. In power X-ray detection, after the X-ray machine emits a beam of rays and irradiates the GIS equipment, imaging is achieved on the imaging plate. In the prior art, after the emission angle of the beam of rays is restricted (to reduce scattering and lower the output energy), the imaging effect can be improved. However, currently, a fixed-aperture collimator is generally used, or a collimator with multiple different aperture sizes is used to adjust the size of different radiation angles. But for a fixed-aperture collimator, due to different GIS equipment to be detected and different models of X-ray machines, different aperture collimators are required for different ray energy requirements and focal lengths, and the collimator aperture needs to be replaced by repeated disassembly. Frequent disassembly and assembly will reduce the installation accuracy of the collimator. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiency that the aperture of the collimator in the prior art is fixed at the constraint position, resulting in the need to replace the collimator correspondingly when replacing different ray sources, thus causing errors due to the collimator. An X-ray machine collimation device with a continuously variable constraint angle is provided. The diameter of the ray is constrained by a continuously variable constraint device, so that it can adapt to more specifications of ray changes without replacing the collimator.

[0004] The purpose of the utility model is mainly achieved by the following technical solutions:

[0005] An X-ray machine collimation device with a continuously variable constraint angle includes a mounting plate group. A ray hole is opened on the mounting plate group. A constraint device group is arranged on the mounting plate group. The constraint device group is located at the edge of the ray hole and is slidably connected to the mounting plate group;

[0006] A pushing and adjusting mechanism is arranged on the side of the constraint device group. The pushing and adjusting mechanism can push the constraint device group to slide reciprocally towards the direction of the ray hole.

[0007] Currently, in the prior art, the collimation of the X-ray machine mainly relies on physical constraints, that is, the irradiation direction of the rays of the X-ray machine is restricted to collimate and constrain the X-ray machine, in order to avoid too many impurity signals in the detected results of the collected rays, which affects the accuracy of the detection results.

[0008] The conventional physical constraint method is to install a collimation device on the X-ray machine. The constraint device in the collimation device can effectively constrain the irradiation direction of the ray, so as to reduce the ray irradiation error. However, the constraint devices in the collimation devices in the prior art are generally set with fixed specifications, so as to provide the use of specific models of X-ray machines. But in actual application scenarios, it often involves specific situations such as replacing different X-ray devices for various types of inspections. At this time, it is necessary to replace the collimation device or the constraint device. During the replacement process, there will be multiple disassembly and assembly operations, and multiple calibration errors will be generated during the disassembly and assembly process. Therefore, the more times of replacement, the more the installation accuracy decreases.

[0009] In the embodiment of the present application, the mounting plate group is used to provide a bearing space for the constraint device group, and the ray holes are provided to accommodate the passage of rays. The constraint device group and the mounting plate group are slidably connected so that the size of the ray holes can be further restricted by the constraint device group. When the constraint device group restricts the size of the ray holes, it can constrain the rays, so that the direction and radiation range of the rays are both controlled to achieve the purpose of adapting to the adjustment of different radiation angles; through the sliding of the constraint device group on the mounting plate group of the present invention, the aperture size of the ray holes can be effectively changed, so as to help the ray holes form different apertures according to different ray energy requirements and the size of the teaching aids, so as to achieve the purpose of adjusting the rays.

[0010] Further, the mounting plate group includes a first mounting plate and a second mounting plate. There are several connecting rods between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are fixed by the connecting rods;

[0011] The constraint device group includes a first constraint device and a second constraint device. The first constraint device is located on the second mounting plate, and the second constraint device is located between the first mounting plate and the second mounting plate;

[0012] The sliding direction of the first constraint device is orthogonal to the sliding direction of the second constraint device.

[0013] In the embodiment of the present application, the first mounting plate is used to carry the second constraint device, the second mounting plate is used to carry the first constraint device, the connecting rods are used to fixedly connect the first mounting plate and the second mounting plate, and enough space can be left between the first mounting plate and the second mounting plate to accommodate the second constraint device. The sliding directions of the first constraint device and the second constraint device are orthogonal, so that the rays can be constrained in both the horizontal and vertical directions, so that the constraint direction can be more reasonable.

[0014] Further, the first constraint device includes a first sliding plate and a second sliding plate, and the first sliding plate and the second sliding plate are symmetrically distributed about the center of the ray hole;

[0015] A surface layer adjusting component is arranged between the first sliding plate and the second sliding plate, and the surface layer adjusting component can push the first sliding plate and the second sliding plate to reciprocate towards each other.

[0016] In the embodiment of the present application, the first sliding plate and the second sliding plate can be retracted into the radiation hole or expanded out of the radiation hole, so as to achieve the purpose of restricting the aperture size of the radiation hole. One of the first sliding plate and the second sliding plate is pushed by a pushing adjustment mechanism, and the other forms a follower through the push of the surface layer adjusting component, so as to achieve the purpose of driving the first sliding plate and the second sliding plate to slide synchronously with a single power source. Under the combined action of the first sliding plate and the second sliding plate, the constraint of the radiation hole can be made more regular, avoiding the risk of local omission of the radiation constraint.

[0017] Further, the surface layer adjusting component includes a first rack and a second rack. One end of the first rack is fixed to the first sliding plate, and the other end thereof is inserted into the second sliding plate. One end of the second rack is fixed to the second sliding plate, and the other end thereof is inserted into the first sliding plate. An adjusting gear is arranged between the first rack and the second rack. Both the first rack and the second rack are engaged with the adjusting gear, and the adjusting gear is installed on the second mounting plate.

[0018] In the embodiment of the present application, under the meshing action of the adjusting gear, the first rack and the second rack can slide synchronously. Since the first rack and the second rack are respectively fixed to the first sliding plate and the second sliding plate, the opposite sliding and the opposite separation of the first sliding plate and the second sliding plate can be carried out synchronously. The constraint at the radiation hole will also form a regular constraint on the radiation according to the synchronous sliding of the first sliding plate and the second sliding plate. When the first sliding plate or the second sliding plate is pushed by a thrust, the sliding of the first rack or the second rack will also drive the rotation of the adjusting gear, thereby driving the other sliding plate to slide synchronously.

[0019] Further, the second restraint includes a third sliding plate and a fourth sliding plate, and the third sliding plate and the fourth sliding plate are symmetrically distributed about the center of the radiation hole;

[0020] A sandwich adjusting component is arranged between the third sliding plate and the fourth sliding plate, and the sandwich adjusting component can push the third sliding plate and the fourth sliding plate to reciprocate towards each other;

[0021] The sandwich adjusting component has the same structure as the surface layer adjusting component.

[0022] In the embodiment of the present application, the moving directions of the third sliding plate and the fourth sliding plate in the second restrictor are orthogonal to the moving directions of the first sliding plate and the second sliding plate, so that a rectangular constraint range can be formed for the ray holes between the first restrictor and the second restrictor, facilitating the imaging of the detector.

[0023] Further, the second mounting plate includes a plate body, and a plurality of sliding grooves are provided on the plate body. A plurality of convex ribs are provided on both the third sliding plate and the fourth sliding plate, and the convex ribs are matched with the sliding grooves: each convex rib can be embedded in one sliding groove and slide along the sliding groove;

[0024] A plurality of limiting blocks are provided on the plate body, and limiting grooves matched with the limiting blocks are provided on both the third sliding plate and the fourth sliding plate: the limiting blocks can be embedded in the limiting grooves and slide along the limiting grooves, and the limiting grooves can limit the limiting blocks from disengaging from the limiting grooves.

[0025] In the embodiment of the present application, the convex ribs are used to limit the sliding directions of the third sliding plate and the fourth sliding plate, playing a guiding role. The sliding grooves are used to accommodate the convex ribs and provide constraints on the sliding directions. The limiting blocks can, through the action of the limiting grooves, enable the third sliding plate and the fourth sliding plate to be effectively accommodated between the first mounting plate and the second mounting plate, and the limiting blocks and the limiting grooves can be mutually engaged, thereby limiting the constraint positions of the third sliding plate and the fourth sliding plate and preventing the opposite sliding directions of the third sliding plate and the fourth sliding plate from being misaligned.

[0026] Further, the pushing and adjusting mechanism includes a first adjusting mechanism and a second adjusting mechanism. The first adjusting mechanism is located on the side of the first restrictor, and the second adjusting mechanism is located on the side of the second restrictor;

[0027] The first adjusting mechanism includes an adjusting screw rod. An inner hole is provided on the first restrictor, and the adjusting screw rod is inserted into the inner hole and threadedly connected to the inner hole. An adjusting nut is provided at the end of the adjusting screw rod;

[0028] The second adjusting mechanism has the same structure as the first adjusting mechanism.

[0029] In the embodiment of the present application, the first adjustment mechanism is used to provide a power source for reciprocating motion of the first restraint, and the second adjustment mechanism is used to provide a power source for reciprocating motion of the second restraint. By adjusting the threaded connection between the adjusting screw rod and the inner hole, the depth of insertion of the adjusting screw rod into the inner hole is adjusted, so as to push or pull the first restraint to slide to different positions on the second mounting plate, thereby achieving the purpose of adjusting the restraint position of the first restraint on the radiation hole. In the embodiment of the present application, the guiding stability of the adjusting screw rod is achieved by the restriction of the adjusting nut at the end of the adjusting screw rod, and the rotational power source of the adjusting screw rod can be provided by a motor. In the embodiment of the present application, the function of the second adjustment mechanism is the same as that of the first adjustment mechanism, but the pushing direction of the second adjustment mechanism is orthogonal to that of the first adjustment mechanism, so as to ensure that both the second adjustment mechanism and the first adjustment mechanism can act positively on the first restraint or the second restraint.

[0030] Further, a display device is provided on the surface of the mounting plate group.

[0031] In the embodiment of the present application, by providing a display device, it can effectively assist the adjustment of the restraint group to be in place through the display function.

[0032] Further, a curved surface enclosing plate is provided on the side of the mounting plate group facing away from the restraint group. The curved surface enclosing plate encloses the radiation hole, and an edge flange is provided at the edge of the radiation hole. The curved surface enclosing plate is fixed on the edge flange.

[0033] In the embodiment of the present application, the mounting plate group encloses the emission port of the X-ray machine through the curved surface enclosing plate, so that the rays can be emitted more accurately into the radiation hole, which is convenient for the restraint group to restrain the rays.

[0034] To sum up, the present utility model has the following beneficial effects compared with the prior art:

[0035] (1) By sliding the restraint group on the mounting plate group, the present utility model can effectively change the aperture size of the radiation hole, so as to help the radiation hole form different apertures according to different radiation energy requirements and the size of the teaching aid, achieving the purpose of adjusting the radiation.

[0036] (2) In the present utility model, one of the first sliding plate and the second sliding plate is pushed by a pushing adjustment mechanism, and the other forms a follower through the pushing of the surface layer adjustment component, so as to achieve the purpose of driving the first sliding plate and the second sliding plate to slide synchronously with a single power source.

[0037] (3) In the present utility model, the convex rib is used to limit the sliding directions of the third sliding plate and the fourth sliding plate, playing a guiding role. The sliding groove is used to accommodate the convex rib and provide a constraint on the sliding direction. The limiting block can, through the action of the limiting groove, enable the third sliding plate and the fourth sliding plate to be effectively accommodated between the first mounting plate and the second mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation on the embodiments of the present utility model. In the drawings:

[0039] Figure 1 is a schematic structural diagram of the present utility model;

[0040] Figure 2 is a side view of the present utility model;

[0041] Figure 3 is the present utility model Figure 2 sectional view taken along line A-A in;

[0042] The names corresponding to the reference numerals in the drawings are: 1, the first restraint; 2, the connecting rod; 3, the first mounting plate; 4, the second mounting plate; 5, the second restraint; 6, the display device; 7, the first adjustment mechanism; 8, the edge flange; 9, the curved surface enclosing plate; 10, the ray hole; 11, the first sliding plate; 12, the first rack; 13, the second rack; 14, the adjustment gear; 15, the second sliding plate; 41, the plate body; 42, the convex rib; 43, the limiting block; 51, the third sliding plate; 52, the fourth sliding plate; 53, the interlayer adjustment assembly; 71, the inner hole; 72, the adjustment screw rod; 73, the adjustment nut; 74, the plugging slider; 75, the second adjustment mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] In order to make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and do not constitute a limitation on the present utility model.

[0044] Embodiment:

[0045] As Figures 1 to 3 shown, an X-ray machine collimation device with continuously variable constraint angles includes a mounting plate group. Ray holes 10 are formed in the mounting plate group, and a restraint group is provided on the mounting plate group. The restraint group is located at the edge of the ray holes 10 and is slidably connected to the mounting plate group;

[0046] A pushing and adjusting mechanism is provided on the side of the constraint group, and the pushing and adjusting mechanism can push the constraint group to slide reciprocally in the direction of the ray hole 10.

[0047] In this embodiment, the mounting plate group is used to provide a bearing space for the constraint group. The ray hole 10 is provided to accommodate the passage of rays. The constraint group and the mounting plate group are slidably connected so that the size of the ray hole 10 can be further restricted by the constraint group. When the constraint group restricts the size of the ray hole 10, the rays can be constrained, so that the direction and radiation range of the rays are both controlled to achieve the purpose of adapting to different radiation angle sizes.

[0048] The mounting plate group includes a first mounting plate 3 and a second mounting plate 4. A number of connecting rods 2 are provided between the first mounting plate 3 and the second mounting plate 4, and the first mounting plate 3 and the second mounting plate 4 are fixed by the connecting rods 2;

[0049] The constraint group includes a first constraint 1 and a second constraint 5. The first constraint 1 is located on the second mounting plate 4, and the second constraint 5 is located between the first mounting plate 3 and the second mounting plate 4;

[0050] The sliding direction of the first constraint 1 is orthogonal to the sliding direction of the second constraint 5.

[0051] The first constraint 1 includes a first sliding plate 11 and a second sliding plate 15, and the first sliding plate 11 and the second sliding plate 15 are symmetrically distributed about the center of the ray hole 10;

[0052] A surface layer adjusting component is provided between the first sliding plate 11 and the second sliding plate 15, and the surface layer adjusting component can push the first sliding plate 11 and the second sliding plate 15 to move reciprocally towards each other.

[0053] The surface layer adjusting component includes a first rack 12 and a second rack 13. One end of the first rack 12 is fixed to the first sliding plate 11, and the other end thereof is inserted into the second sliding plate 15. One end of the second rack 13 is fixed to the second sliding plate 15, and the other end thereof is inserted into the first sliding plate 11. An adjusting gear 14 is provided between the first rack 12 and the second rack 13. Both the first rack 12 and the second rack 13 are engaged with the adjusting gear 14, and the adjusting gear 14 is mounted on the second mounting plate 4.

[0054] The second constraint 5 includes a third sliding plate 51 and a fourth sliding plate 52, and the third sliding plate 51 and the fourth sliding plate 52 are symmetrically distributed about the center of the ray hole 10;

[0055] A sandwich adjusting component 53 is arranged between the third sliding plate 51 and the fourth sliding plate 52. The sandwich adjusting component 53 can push the third sliding plate 51 and the fourth sliding plate 52 to reciprocate towards each other;

[0056] The sandwich adjusting component has the same structure as the surface layer adjusting component.

[0057] The second mounting plate 4 includes a plate body 41. A plurality of chutes are arranged on the plate body 41. A plurality of convex ribs 42 are arranged on both the third sliding plate 51 and the fourth sliding plate 52. The convex ribs 42 are matched with the chutes: each convex rib 42 can be embedded in a chute and slide along the chute;

[0058] A plurality of limiting blocks 43 are arranged on the plate body 41. Limiting grooves matched with the limiting blocks 43 are arranged on both the third sliding plate 51 and the fourth sliding plate 52: the limiting blocks 43 can be embedded in the limiting grooves and slide along the limiting grooves, and the limiting grooves can limit the limiting blocks 43 from disengaging from the limiting grooves.

[0059] In practical application of this embodiment, first, the ray emission device is arranged according to the detected parts by the GIS device. After the ray emission device is arranged, its position is fixed. This embodiment is installed at the beam outlet of the ray machine, and the focal length is measured by the automatic measurer to obtain the focal length value. Combining the focal length value and the imaging range of the detector, the rectangular size of the ray hole to be restricted can be calculated, and then the operation of restricting the ray hole is started.

[0060] The pushing and adjusting mechanism includes a first adjusting mechanism 7 and a second adjusting mechanism 75. The first adjusting mechanism 7 is located on the side of the first restrictor 1, and the second adjusting mechanism 75 is located on the side of the second restrictor 5;

[0061] The first adjusting mechanism 7 includes an adjusting screw rod 72. An inner hole 71 is arranged on the first restrictor 1. The adjusting screw rod 72 is inserted into the inner hole 71 and is in threaded connection with the inner hole 71. An adjusting nut 73 is arranged at the end of the adjusting screw rod 72;

[0062] The second adjusting mechanism 75 has the same structure as the first adjusting mechanism 7.

[0063] In the actual operation of the restraint operation of this embodiment, the first adjustment mechanism 7 and the second adjustment mechanism 75 are started simultaneously. The first adjustment mechanism 7 directly acts on the first sliding plate 11, and the first sliding plate 11 is pushed to slide by adjusting the lead screw 72. When the first sliding plate 11 slides, it will push the first rack 12. The sliding of the first rack 12 will drive the rotation of the adjustment gear 14. The rotation of the adjustment gear 14 will drive the sliding of the second rack 13. The sliding of the second rack 13 can drive the sliding of the second sliding plate 15. Since the actions of the first sliding plate 11, the first rack 12, the adjustment gear 14, and the second rack 13 occur synchronously, the opposite sliding between the first sliding plate 11 and the second sliding plate 15 can be carried out synchronously, so as to form a restraint on the radiation hole 10 in the horizontal or vertical direction.

[0064] Similarly, after the second adjustment mechanism 75 is started, the third sliding plate 51 and the fourth sliding plate 52 can form a restraint on the radiation hole in the horizontal or vertical direction. The interlayer adjustment assembly 53 can ensure the synchronization of the sliding process between the third sliding plate 51 and the fourth sliding plate 52. When the first sliding plate 11 and the second sliding plate 15 restrain the radiation hole 10 from the vertical direction, the third sliding plate 51 and the fourth sliding plate 52 restrain the radiation hole 10 from the horizontal direction. When the first sliding plate 11 and the second sliding plate 15 restrain the radiation hole 10 from the horizontal direction, the third sliding plate 51 and the fourth sliding plate 52 restrain the radiation hole 10 from the vertical direction.

[0065] Through the orthogonal relationship between the restraint directions of the first sliding plate 11 and the second sliding plate 15 and the restraint directions of the third sliding plate 51 and the fourth sliding plate 52, a rectangular restraint range can be formed for the radiation, so as to conveniently obtain appropriate radiation detection results.

[0066] In this embodiment, the first sliding plate 11, the second sliding plate 15, the third sliding plate 51, and the fourth sliding plate 52 are all made of lead, so as to realize the restraint of the radiation by means of blocking.

[0067] Blocking sliders 74 are provided on the first sliding plate 11, the second sliding plate 15, the third sliding plate 51, and the fourth sliding plate 52. The blocking sliders 74 are fixed on the sides of the first sliding plate 11, the second sliding plate 15, the third sliding plate 51, and the fourth sliding plate 52. The blocking sliders 74 are used to prevent the adjusting lead screw from penetrating through the sides of the first sliding plate 11, the second sliding plate 15, the third sliding plate 51, and / or the fourth sliding plate 52.

[0068] A display device 6 is provided on the surface of the mounting plate group.

[0069] On the side of the mounting plate group facing away from the restraint group, there is a curved enclosing plate 9, which encloses the ray hole 10. An edge flange 8 is provided at the edge of the ray hole 10, and the curved enclosing plate 9 is fixed on the edge flange 8.

[0070] In this embodiment, by providing the display device 6, it can effectively assist the restraint group to be adjusted in place through the display function. The display device 6 is used to prominently display the actual adjustment position of the restraint group. The mounting plate group encloses the emission port of the X-ray machine through the curved enclosing plate 9, so that the rays can be emitted more accurately into the ray hole 10, facilitating the restraint group to restrain the rays.

[0071] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An X-ray machine collimation device with continuously variable constraint angle, comprising a mounting plate group, and a ray hole (10) is formed on the mounting plate group, characterized in that, A restraint group is provided on the mounting plate group, and the restraint group is located at the edge of the ray hole (10) and is slidably connected to the mounting plate group; A pushing and adjusting mechanism is provided on the side of the restraint group, and the pushing and adjusting mechanism can push the restraint group to slide reciprocally in the direction of the ray hole (10); The mounting plate group includes a first mounting plate (3) and a second mounting plate (4), and a plurality of connecting rods (2) are provided between the first mounting plate (3) and the second mounting plate (4), and the first mounting plate (3) and the second mounting plate (4) are fixed by the connecting rods (2); The restraint group includes a first restraint (1) and a second restraint (5), the first restraint (1) is located on the second mounting plate (4), and the second restraint (5) is located between the first mounting plate (3) and the second mounting plate (4); The sliding direction of the first restraint (1) is orthogonal to the sliding direction of the second restraint (5); The first restraint (1) includes a first sliding plate (11) and a second sliding plate (15), and the first sliding plate (11) and the second sliding plate (15) are symmetrically distributed about the center of the ray hole (10); A surface layer adjusting assembly is provided between the first sliding plate (11) and the second sliding plate (15), and the surface layer adjusting assembly can push the first sliding plate (11) and the second sliding plate (15) to move reciprocally towards each other; The surface layer adjusting assembly includes a first rack (12) and a second rack (13), one end of the first rack (12) is fixed to the first sliding plate (11), and the other end thereof is inserted into the second sliding plate (15), one end of the second rack (13) is fixed to the second sliding plate (15), and the other end thereof is inserted into the first sliding plate (11), an adjusting gear (14) is provided between the first rack (12) and the second rack (13), both the first rack (12) and the second rack (13) are engaged with the adjusting gear (14), and the adjusting gear (14) is mounted on the second mounting plate (4).

2. The X-ray machine collimation device with continuously variable constraint angle according to claim 1, characterized in that, The second restraint (5) includes a third sliding plate (51) and a fourth sliding plate (52), and the third sliding plate (51) and the fourth sliding plate (52) are symmetrically distributed about the center of the ray hole (10); A sandwich adjusting assembly (53) is provided between the third sliding plate (51) and the fourth sliding plate (52), and the sandwich adjusting assembly (53) can push the third sliding plate (51) and the fourth sliding plate (52) to move reciprocally towards each other; The sandwich adjusting assembly (53) has the same structure as the surface layer adjusting assembly.

3. The X-ray machine collimation device with continuously variable constraint angle according to claim 2, characterized in that, The second mounting plate (4) includes a plate body (41), and a plurality of chutes are provided on the plate body (41), and a plurality of convex ribs (42) are provided on both the third sliding plate (51) and the fourth sliding plate (52), and the convex ribs (42) are matched with the chutes: each convex rib (42) can be embedded in one of the chutes and slide along the chute; A number of limiting blocks (43) are provided on the plate body (41), and limiting grooves matching the limiting blocks (43) are provided on both the third sliding plate (51) and the fourth sliding plate (52): the limiting blocks (43) can be embedded into the limiting grooves and slide along the limiting grooves, and the limiting grooves can prevent the limiting blocks (43) from disengaging from the limiting grooves.

4. A collimation device for an X-ray machine with continuously variable constraint angle according to any one of claims 1 to 3, characterized in that, The pushing and adjusting mechanism includes a first adjusting mechanism (7) and a second adjusting mechanism (75). The first adjusting mechanism (7) is located on the side of the first restraint (1), and the second adjusting mechanism (75) is located on the side of the second restraint (5); The first adjusting mechanism (7) includes an adjusting screw rod (72). An inner hole (71) is provided on the first restraint (1). The adjusting screw rod (72) is inserted into the inner hole (71) and is threadedly connected to the inner hole (71). An adjusting nut (73) is provided at the end of the adjusting screw rod (72); The second adjusting mechanism (75) has the same structure as the first adjusting mechanism (7).

5. The X-ray machine collimation device with continuously variable constraint angle according to claim 1, characterized in that, A display device (6) is provided on the surface of the mounting plate group.

6. The X-ray machine collimation device with continuously variable constraint angle according to claim 1, characterized in that, A curved enclosure plate (9) is provided on the side of the mounting plate group facing away from the restraint group. The curved enclosure plate (9) encloses the radiation hole (10). An edge flange (8) is provided at the edge of the radiation hole (10). The curved enclosure plate (9) is fixed on the edge flange (8).

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