An X-ray imaging scanning device

Abstract

The present invention discloses an X-ray imaging scanning device, relating to the technical field of medical equipment. The present invention comprises an adjustable horizontal frame, with an X-ray detector fixed at one end and an X-ray emitter mounted at the other end via a telescopic assembly, allowing for adjustment of the distance between the emitter and the detector. Two lead plates with adjustable spacing and position are positioned between the emitter and the detector. The movement of the top and bottom lead plate support frames is controlled by a central lead screw and a sleeve lead screw, respectively, enabling independent and precise adjustment of the lead plates. The device utilizes an electromagnetically coupled rotating disk and a central rotating toggle gear to achieve flexible control of the lead plate position.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an X-ray imaging scanning device. Background Art

[0002] Traditional X-ray imaging devices have many limitations in shielding and adjustment. Generally, the shielding device of the device mainly relies on making patients wear lead aprons for protection. However, the weight of the lead apron is very large, usually between 5 and 10 kilograms, which is a considerable burden for weak, elderly or child patients. The heavy weight of the lead apron may cause discomfort to the patient during the examination, and even affect normal breathing and heart rate, increasing the risk of the examination.

[0003] In addition, the size and shape of the lead apron are usually fixed and cannot adapt to patients with different body types and heights. For patients with a larger or smaller body size, the lead apron may not fully cover the parts that need to be shielded, resulting in the non-examination area still being exposed to radiation, increasing unnecessary radiation risk and radiation dose. At the same time, whether the lead apron is too large or too small will affect the comfort of the patient, may cause tension and uneasiness, and affect the examination effect.

[0004] Since the lead apron cannot be flexibly adjusted according to the specific situation of the patient, medical staff will also face difficulties during the operation. For example, when taking an X-ray of a specific part, it may be necessary to adjust the position or angle of the lead apron, but the rigidity and weight of the lead apron make the adjustment process cumbersome and time-consuming. This not only reduces the efficiency of the examination, but also may lead to repeated exposure, further increasing the radiation dose of the patient. Summary of the Invention

[0005] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: An X-ray imaging scanning device includes an adjustment cross frame. One end of the adjustment cross frame is fixed with an X-ray detector, and handles are arranged on both sides of the X-ray detector. The other end of the adjustment cross frame is provided with an X-ray emitter, and the X-ray emitter is installed on the adjustment cross frame through a telescopic component, wherein the telescopic component is used to adjust the distance between the X-ray emitter and the X-ray detector; Two lead plates capable of adjusting the spacing and position are arranged between the X-ray emitter and the X-ray detector for shielding the non-irradiated part of the patient; The two lead plates are respectively fixed on the corresponding top lead plate support frame and bottom lead plate support frame, and the top lead plate support frame and the bottom lead plate support frame are respectively threadedly sleeved on the corresponding central lead screw and sleeve shaft lead screw. The sleeve shaft lead screw is coaxially sleeved on the outer surface of the central lead screw, and the sleeve shaft lead screw is rotationally matched with the central lead screw. Both the central lead screw and the sleeve shaft lead screw can rotate independently.

[0006] Preferably, the central lead screw and the sleeve shaft lead screw are rotatably installed on the fine-tuning longitudinal moving beam. The fine-tuning longitudinal moving beam is in sliding fit with the top lead plate support frame and the bottom lead plate support frame. Plane chamfers are provided at the contact positions between the top lead plate support frame, the bottom lead plate support frame and the fine-tuning longitudinal moving beam to limit the rotation of the top lead plate support frame and the bottom lead plate support frame around the axis of the central lead screw.

[0007] Preferably, a central rotary drive gear is sleeved on the outer surface of the central lead screw in a rotary and sliding manner. A top rotary disc and a bottom rotary disc are respectively arranged above and below the central rotary drive gear. The top rotary disc is fixed to the middle of the central lead screw, and the bottom rotary disc is fixed to the top end of the sleeve shaft lead screw. Electromagnets are embedded in both the top rotary disc and the bottom rotary disc, and the electromagnets are in magnetic cooperation with the central rotary drive gear.

[0008] Preferably, a slide rail groove is slidably arranged on the adjusting cross frame. A sliding seat is slidably installed in the slide rail groove. Two parallel horizontal support plates are fixedly installed on the sliding seat. The central lead screw and the sleeve shaft lead screw are rotatably matched with the horizontal support plates. A gear column that meshes with and slides on the central rotary drive gear is also rotatably installed between the two horizontal support plates. The gear column is fixedly matched with the output shaft of the lead plate displacement drive motor fixed on the horizontal support plate.

[0009] Preferably, two parallel fine-tuning support plates are fixedly installed on the adjusting cross frame. Two parallel fine-tuning lead screws are rotatably installed between the opposite surfaces of the fine-tuning support plates. Two fine-tuning motors for driving the corresponding fine-tuning lead screws to rotate are fixed on one of the fine-tuning support plates.

[0010] Preferably, a longitudinal support beam, a guiding slide rod and a guiding drive motor are fixed on the support rotary disc surface. A guiding drive lead screw is fixed on the output shaft of the guiding drive motor. The top end of the guiding slide rod is fixedly matched with the top end of the longitudinal support beam. The top end of the guiding drive lead screw is rotatably matched with the top end of the longitudinal support beam. The adjusting cross frame is in sliding fit with the guiding slide rod and in threaded transmission fit with the guiding drive lead screw.

[0011] Preferably, a foot pedal is arranged below the middle of the X-ray detector and the lead plate. The foot pedal is fixed to the top end of the foot pedal support column, and the foot pedal support column is fixed to the base. A support limiting circular wall is fixed on the base. A support rotary disc surface, a terminal drive gear ring and an intermediate drive gear ring are rotatably installed on the inner wall of the support limiting circular wall. The support rotary disc surface, the terminal drive gear ring and the intermediate drive gear ring cannot axially displace in the support limiting circular wall. Two symmetrically arranged grooves are provided at the circumference of the support rotary disc surface. The groove is composed of an extrusion inclined surface, a pushing surface and a supporting surface. An extrusion column is in contact friction fit between the extrusion inclined surface and the support limiting circular wall. A push rod pin is in contact fit with one side of the extrusion column facing the pushing surface. The extrusion column is elastically connected to the supporting surface through an elastic rubber pad.

[0012] Preferably, all the toggle pins are fixed on the end drive gear ring. The support rotating disk surface is rotatably sleeved on the pedal support column. A central driving gear is rotatably sleeved on the circumferential surface of the pedal support column below the support rotating disk surface. A cylinder shaft is coaxially fixed on the central driving gear. The cylinder shaft is rotatably sleeved on the pedal support column. The central driving gear and the end drive gear ring are meshed and driven through a planetary speed regulation gear. The planetary speed regulation gear is rotatably installed on a planetary speed regulation gear bracket. The planetary speed regulation gear bracket is fixed on the intermediate drive gear ring. A central driven gear is coaxially fixed on the cylinder shaft. A first driving motor and a second driving motor are fixed on the base. A first driving gear and a second driving gear are respectively fixed on the output shafts of the first driving motor and the second driving motor. The first driving gear is meshed and driven with the intermediate drive gear ring. The second driving gear is meshed and driven with the central driven gear. A dust-proof cover plate is covered on the top of the support limiting circular wall and the support rotating disk surface. The dust-proof cover plate is rotationally matched with the support limiting circular wall. The dust-proof cover plate is relatively stationary with the support rotating disk surface. The dust-proof cover plate is rotationally matched with the pedal support column.

[0013] Preferably, the base is fixed inside the buried box body. A circular opening is formed in the top of the buried box body. A bridge plate is fixedly arranged at the edge of the circular opening in a manner that is convenient for disassembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) Two lead plates capable of adjusting the distance and position are arranged between the X-ray emitter and the X-ray detector in the present invention. By the independent rotation of the central lead screw and the sleeve shaft lead screw, the movement of the top lead plate support frame and the bottom lead plate support frame is respectively controlled, realizing the precise adjustment of the height and gap of the lead plates. In this way, the X-ray can only irradiate the target area through the gap between the two lead plates, effectively shielding the non-irradiated part of the patient, reducing unnecessary radiation exposure, improving the safety of the patient, and flexibly adjusting the lead plate gap and position according to the height and examination part of different patients, providing a personalized radiation shielding scheme, and improving the image quality and diagnostic accuracy; (2) The equipment base of the present invention is equipped with a first driving motor and a second driving motor. Through the transmission of the planetary speed regulation gear and the gear ring, the precise rotation control of the support rotating disk surface is realized. This design allows the equipment to adjust the irradiation angle of the X-ray emitter without moving the patient and obtain images at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the buried box body of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the whole of the present invention.

[0017] Figure 3 It is a schematic structural diagram at the planetary speed regulation gear bracket of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the supporting rotating disk of the present invention.

[0019] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0020] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at point B in the middle.

[0021] Figure 7 This is a structural schematic diagram of the longitudinal support beam of the present invention.

[0022] Figure 8 This is a structural diagram of the fine-tuning longitudinal moving beam of the present invention.

[0023] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point C in the middle.

[0024] Figure 10 This is a structural diagram of the central rotating gear of the present invention.

[0025] In the figure: 101-buried box body; 102-circular opening; 103-base; 104-supporting and limiting circular wall; 105-dust cover; 106-pedal; 107-pedal support column; 108-first drive motor; 109-supporting rotating disk; 110-end drive gear ring; 111-intermediate drive gear ring; 112-second drive motor; 113-second driving gear; 114-first driving gear; 115-center driven gear; 116-planetary speed regulating gear; 117-planetary speed regulating gear bracket; 118-cylinder shaft; 119-center driving gear; 120-extrusion inclined surface; 121-elastic rubber pad; 122-extrusion column; 123-lever pin; 124-pushing surface; 125-support surface; 126-longitudinal support Beam; 127-guide slide; 128-guide drive screw; 129-guide drive motor; 130-adjustment crossbeam; 131-telescopic assembly; 132-X-ray detector; 133-handle; 134-fine-tuning support plate; 135-fine-tuning motor; 136-fine-tuning screw; 137-top lead plate support frame; 138-bottom lead plate support frame; 139-fine-tuning longitudinal moving beam; 140-center screw; 141-sleeve screw; 142-top rotating disk; 143-bottom rotating disk; 144-center rotating toggle gear; 145-gear column; 146-lead plate displacement drive motor; 147-horizontal support plate; 148-sliding seat; 149-slide rail groove; 150-bridge plate; 151-X-ray emitter; 152-lead plate. DETAILED DESCRIPTION

[0026] The following will be combined with the attached Figure 1-10 drawings, and the technical solutions of the present invention will be further described through specific embodiments.

[0027] The present invention provides an X-ray imaging scanning device, which includes an adjusting cross frame 130. One end of the adjusting cross frame 130 is fixed with an X-ray detector 132. Handles 133 are arranged on both sides of the X-ray detector 132. The other end of the adjusting cross frame 130 is provided with an X-ray emitter 151. The X-ray emitter 151 is installed on the adjusting cross frame 130 through a telescopic component 131, and the telescopic component 131 is used to adjust the distance between the X-ray emitter 151 and the X-ray detector 132. Two lead plates 152 capable of adjusting the spacing and position are arranged between the X-ray emitter 151 and the X-ray detector 132 for shielding the non-irradiated parts of the patient. The two lead plates 152 are respectively fixed on the corresponding top lead plate support frame 137 and bottom lead plate support frame 138. The top lead plate support frame 137 and the bottom lead plate support frame 138 are respectively sleeved on the corresponding central lead screw 140 and sleeve lead screw 141 through screw threads. The sleeve lead screw 141 is coaxially sleeved on the outer surface of the central lead screw 140, and the sleeve lead screw 141 is rotationally matched with the central lead screw 140. Both the central lead screw 140 and the sleeve lead screw 141 can rotate independently. The central lead screw 140 and the sleeve lead screw 141 are rotatably installed on a fine-adjustment longitudinal moving beam 139. The fine-adjustment longitudinal moving beam 139 is in sliding fit with the top lead plate support frame 137 and the bottom lead plate support frame 138. Plane chamfers are arranged at the contact positions of the top lead plate support frame 137, the bottom lead plate support frame 138 and the fine-adjustment longitudinal moving beam 139 to limit the rotation of the top lead plate support frame 137 and the bottom lead plate support frame 138 around the axis of the central lead screw 140. A central rotary shifting gear 144 is rotatably and slidably sleeved on the outer surface of the central lead screw 140. A top rotary disk 142 and a bottom rotary disk 143 are respectively arranged above and below the central rotary shifting gear 144. The top rotary disk 142 is fixed to the middle of the central lead screw 140, and the bottom rotary disk 143 is fixed to the top end of the sleeve lead screw 141. Electromagnets are embedded in both the top rotary disk 142 and the bottom rotary disk 143, and the electromagnets are magnetically matched with the central rotary shifting gear 144. A slide rail groove 149 is slidably arranged on the adjusting cross frame 130. A sliding seat 148 is slidably installed in the slide rail groove 149. Two parallel horizontal support plates 147 are fixedly installed on the sliding seat 148. The central lead screw 140 and the sleeve lead screw 141 are rotationally matched with the horizontal support plates 147. A gear column 145 meshing with and sliding on the central rotary shifting gear 144 is also rotatably installed between the two horizontal support plates 147. The gear column 145 is fixedly matched with the output shaft of a lead plate displacement driving motor 146 fixed on the horizontal support plates 147. Two parallel fine-adjustment support plates 134 are also fixedly installed on the adjusting cross frame 130. Two parallel fine-adjustment lead screws 136 are rotatably installed between the opposite surfaces of the fine-adjustment support plates 134. Two fine-adjustment motors 135 for driving the corresponding fine-adjustment lead screws 136 to rotate are fixed on one of the fine-adjustment support plates 134.A longitudinal support beam 126, a guide slide bar 127 and a guide drive motor 129 are fixed on the support rotating disk surface 109. A guide drive lead screw 128 is fixed on the output shaft of the guide drive motor 129. The top end of the guide slide bar 127 is fixedly matched with the top end of the longitudinal support beam 126. The top end of the guide drive lead screw 128 is rotationally matched with the top end of the longitudinal support beam 126. An adjustment cross frame 130 is slidably matched with the guide slide bar 127 and is in threaded transmission cooperation with the guide drive lead screw 128.

[0028] A footrest 106 is provided below the middle of the X-ray detector 132 and the lead plate 152. The footrest 106 is fixed to the top end of the footrest support column 107, and the footrest support column 107 is fixed to the base 103. A support limiting circular wall 104 is fixed to the base 103. A support rotating disk 109, an end drive gear ring 110, and an intermediate drive gear ring 111 are rotatably installed on the inner wall of the support limiting circular wall 104. Among them, the support rotating disk 109, the end drive gear ring 110, and the intermediate drive gear ring 111 cannot axially displace in the support limiting circular wall 104. Two symmetrically arranged grooves are provided at the circumference of the support rotating disk 109. The groove is composed of an extrusion inclined surface 120, a pushing surface 124, and a supporting surface 125. Among them, an extrusion column 122 is in contact frictionally matched between the extrusion inclined surface 120 and the support limiting circular wall 104. A dial rod pin 123 is in contact fit with one side of the extrusion column 122 facing the pushing surface 124. The extrusion column 122 is elastically connected to the supporting surface 125 through an elastic rubber pad 121. All the dial rod pins 123 are fixed to the end drive gear ring 110. Among them, the support rotating disk 109 is rotatably sleeved on the footrest support column 107. A central driving gear 119 is rotatably sleeved on the circumferential surface of the footrest support column 107 below the support rotating disk 109. A barrel shaft 118 is coaxially fixed to the central driving gear 119. The barrel shaft 118 is rotatably sleeved on the footrest support column 107. The central driving gear 119 is meshed and driven with the end drive gear ring 110 through a planetary speed regulating gear 116. Among them, the planetary speed regulating gear 116 is rotatably installed on a planetary speed regulating gear bracket 117, and the planetary speed regulating gear bracket 117 is fixed to the intermediate drive gear ring 111. A central driven gear 115 is coaxially fixed to the barrel shaft 118. A first driving motor 108 and a second driving motor 112 are fixed to the base 103. Among them, a first driving gear 114 and a second driving gear 113 are respectively fixed to the output shafts of the first driving motor 108 and the second driving motor 112. The first driving gear 114 is meshed and driven with the intermediate drive gear ring 111, and the second driving gear 113 is meshed and driven with the central driven gear 115. A dust-proof cover plate 105 is covered on the top of the support limiting circular wall 104 and the support rotating disk 109. The dust-proof cover plate 105 is rotatably matched with the support limiting circular wall 104. The dust-proof cover plate 105 is relatively stationary with the support rotating disk 109. The dust-proof cover plate 105 is rotatably matched with the footrest support column 107.

[0029] The base 103 is fixed inside the buried box body 101. A circular opening 102 is provided at the top of the buried box body 101. The edge of the circular opening 102 is fixedly provided with a bridge plate 150 in a manner that is convenient for disassembly.

[0030] The bridge plate 150 is installed between the footrest 106 and the circular opening 102 (for example, a hinge is provided at the connection between the bridge plate 150 and the circular opening 102). When the user steps onto the footrest 106, their body is positioned between the X-ray detector 132 and the lead plate 152. The X-ray emitter 151 emits X-rays, which then pass through the human body and are received and developed on the X-ray detector 132. To reduce unnecessary X-ray radiation, two movable lead plates 152 are provided for shielding, allowing the X-rays to pass through the human body only through the gap between the two lead plates 152. The positions of the two lead plates 152 can be adjusted by moving the corresponding top lead plate support frame 137 and bottom lead plate support frame 138. Specifically, when the central screw rod 140 rotates, the central screw rod 140 drives the top lead plate support frame 137 to move linearly on the fine-tuning longitudinal movement beam 139, thereby adjusting the height of the lead plate 152 on the top lead plate support frame 137. When the sleeve shaft screw rod 141 rotates, the sleeve shaft screw rod 141 drives the bottom lead plate support frame 138 to move linearly on the fine-tuning longitudinal movement beam 139, thereby adjusting the height of the lead plate 152 on the bottom lead plate support frame 138. By adjusting the heights of the two lead plates 152, the gap between the two lead plates 152 and the position of the gap can be adjusted. The rotation of the central screw rod 140 requires starting the lead plate displacement drive motor 146. The output shaft of the lead plate displacement drive motor 146 drives the gear column 145 to rotate, and the gear column 145 drives the central rotating toggle gear 144 to rotate. At this time, the electromagnet inside the top rotating disk 142 is activated, causing the central rotating toggle gear 144 to be attracted to the top rotating disk 142. Then, the central rotating toggle gear 144 drives the top rotating disk 142 to rotate, and the top rotating disk 142 drives the central screw rod 140 to rotate. If you want the sleeve shaft screw rod 141 to rotate, you only need to control the electromagnet inside the bottom rotating disk 143 to be energized (while the electromagnet inside the top rotating disk 142 needs to be de-energized), and then attract the central rotating toggle gear 144 to move towards and contact the bottom rotating disk 143. Then, the central rotating toggle gear 144 drives the bottom rotating disk 143 to rotate, thereby driving the sleeve shaft screw rod 141 to rotate. It should be noted that tooth-shaped or rough friction surfaces that can mesh with each other are provided between the central rotating toggle gear 144 and the bottom rotating disk 143 and the top rotating disk 142.

[0031] Adjust the distance between the lead plate 152 and the X-ray detector 132 according to the volume of the irradiated object. Specifically, control two fine-tuning motors 135. The fine-tuning motors 135 drive two fine-tuning lead screws 136 to rotate. The two fine-tuning lead screws 136 drive the fine-tuning longitudinal moving beam 139 to move along the axial direction. Then, the bottom lead plate support frame 138 and the top lead plate support frame 137 can be driven to move through the sleeve shaft lead screw 141 and the central lead screw 140, thereby driving the two lead plates 152 to move. If different positions need to be irradiated, only need to control the guiding drive motor 129. The output shaft of the guiding drive motor 129 drives the guiding drive lead screw 128 to rotate. The guiding drive lead screw 128 drives the adjusting cross frame 130 to move vertically on the guiding slide bar 127, thereby adjusting the irradiation position of the X-ray emitter 151. If the irradiation angle needs to be adjusted, it is necessary to control the first drive motor 108 and / or the second drive motor 112 (it should be noted that a worm and gear one-way transmission mechanism is provided between the output shaft of the first drive motor 108 and the first driving gear 114, and a worm and gear one-way transmission mechanism is provided between the output shaft of the second drive motor 112 and the second driving gear 113). When the first drive motor 108 is started alone, the output shaft of the first drive motor 108 will drive the first driving gear 114 to rotate. The first driving gear 114 drives the intermediate driving gear ring 111 to rotate. The intermediate driving gear ring 111 drives the planetary speed regulation gear support 117 to rotate. The planetary speed regulation gear support 117 drives the planetary speed regulation gear 116 to revolve and rotate (wherein the central driven gear 115, the barrel shaft 118, and the central driving gear 119 are all rotationally matched with the planetary speed regulation gear support 117 to play a supporting role). The rotation is due to the fact that the central driving gear 119 cannot rotate. Then, the planetary speed regulation gear 116 in the revolving and rotating state will drive the end driving gear ring 110 to rotate. The rotation of the end driving gear ring 110 will drive all the toggle pins 123 to rotate, and then toggle the support rotating disk 109 to rotate. At this time, all the components installed on the support rotating disk 109 will rotate accordingly, thereby adjusting the X-ray emitter 151 to irradiate at different angles on the human body.Start the second drive motor 112 alone. The output shaft of the second drive motor 112 drives the second driving gear 113 to rotate. The second driving gear 113 drives the central driven gear 115 to rotate. The central driven gear 115 drives the central driving gear 119 to rotate. The central driving gear 119 drives the end drive ring 110 to rotate through the planetary speed-regulating gear 116. If the first drive motor 108 and the second drive motor 112 are started simultaneously, according to the rotational speeds and rotational directions corresponding to the first drive motor 108 and the second drive motor 112, the rotational speed and direction of the final end drive ring 110 can be adjusted, and further the rotational speed and direction of the support rotating disk 109 are adjusted. Since the shift lever pin 123 is arranged in the symmetrically arranged grooves formed in the support rotating disk 109, the shift lever pin 123 can directly drive the support rotating disk 109 to rotate. When an external force acts on the support rotating disk 109, in order to prevent the support rotating disk 109 from rotating on its own (for example, when a person applies a force on the X-ray detector 132), if the support rotating disk 109 wants to rotate on its own, it needs to drive the extrusion column 122 to rotate accordingly. However, no matter whether the extrusion column 122 rotates clockwise or counterclockwise, there will always be an extrusion column 122 whose frictional force direction received from the support limiting circular wall 104 is towards the pushing surface 124 on the extrusion inclined surface 120 (because the two extrusion inclined surfaces 120 and the extrusion column 122 are symmetrically arranged), that is, it moves in the direction of decreasing space, thereby increasing the extrusion force of the support limiting circular wall 104 and the extrusion inclined surface 120 on the extrusion column 122, and the frictional force also increases, resulting in that the support rotating disk 109 and the support limiting circular wall 104 cannot rotate relative to each other under the restriction of the extrusion column 122, thus preventing the support rotating disk 109 from rotating on its own. When the shift lever pin 123 rotates, it will drive one of the stuck extrusion columns 122 to move towards the support surface 125 direction on the extrusion inclined surface 120 (the elastic rubber pad 121 is compressed). At this time, the support limiting circular wall 104 and the extrusion inclined surface 120 no longer extrude the extrusion column 122, and the frictional force disappears. Similarly, the frictional force received by the other extrusion column 122 is also towards the support surface 125 direction, so the effect is the same. When the shift lever pin 123 actively drives the support rotating disk 109 to rotate, the support rotating disk 109 can rotate within the support limiting circular wall 104, otherwise it cannot rotate. It should be noted that the buried box body 101 is buried under the ground surface, so that the upper surface of the buried box body 101 is flush with the ground surface.

Claims

1. An X-ray imaging scanning device, characterized in that: It includes an adjusting cross frame (130). One end of the adjusting cross frame (130) is fixed with an X-ray detector (132). Handles (133) are arranged on both sides of the X-ray detector (132). The other end of the adjusting cross frame (130) is equipped with an X-ray emitter (151). The X-ray emitter (151) is installed on the adjusting cross frame (130) through a telescopic component (131), and the telescopic component (131) is used to adjust the distance between the X-ray emitter (151) and the X-ray detector (132); Two lead plates (152) capable of adjusting the spacing and position are arranged between the X-ray emitter (151) and the X-ray detector (132) to block the non-irradiated parts of the patient. The two lead plates (152) are respectively fixed on the corresponding top lead plate support frame (137) and bottom lead plate support frame (138). The top lead plate support frame (137) and bottom lead plate support frame (138) are respectively sleeved on the corresponding central lead screw (140) and sleeve shaft lead screw (141) through screw transmission. The sleeve shaft lead screw (141) is coaxially sleeved on the outer surface of the central lead screw (140), and the sleeve shaft lead screw (141) is rotationally matched with the central lead screw (140). Both the central lead screw (140) and the sleeve shaft lead screw (141) can rotate independently. A central rotating drive gear (144) is rotatably and slidably sleeved on the outer surface of the central lead screw (140). A top rotating disk (142) and a bottom rotating disk (143) are respectively arranged above and below the central rotating drive gear (144). The top rotating disk (142) is fixed to the middle of the central lead screw (140), and the bottom rotating disk (143) is fixed to the top end of the sleeve shaft lead screw (141). Electromagnets are embedded in both the top rotating disk (142) and the bottom rotating disk (143), and the electromagnets are magnetically matched with the central rotating drive gear (144). Two parallel fine adjustment support plates (134) are also fixedly installed on the adjusting cross frame (130). Two parallel fine adjustment lead screws (136) are rotatably installed between the opposite surfaces of the fine adjustment support plates (134). Two fine adjustment motors (135) for driving the corresponding fine adjustment lead screws (136) to rotate are fixed on one of the fine adjustment support plates (134).

2. An X-ray imaging scanning device according to claim 1, characterized in that: The central lead screw (140) and the sleeve shaft lead screw (141) are rotatably installed on the fine adjustment longitudinal moving beam (139). The fine adjustment longitudinal moving beam (139) is in sliding fit with the top lead plate support frame (137) and the bottom lead plate support frame (138). Plane chamfers are provided at the contact positions of the top lead plate support frame (137), the bottom lead plate support frame (138) and the fine adjustment longitudinal moving beam (139) to limit the rotation of the top lead plate support frame (137) and the bottom lead plate support frame (138) around the axis of the central lead screw (140).

3. An X-ray imaging scanning device according to claim 2, characterized in that: A slide rail groove (149) is slidably arranged on the adjusting cross frame (130). A sliding seat (148) is slidably installed in the slide rail groove (149). Two horizontally arranged and parallel horizontal support plates (147) are fixedly installed on the sliding seat (148). The central lead screw (140) and the sleeve shaft lead screw (141) are rotationally matched with the horizontal support plates (147). A gear column (145) which is meshed with and slides on the central rotating toggle gear (144) is also rotationally installed between the two horizontal support plates (147). The gear column (145) is fixedly matched with the output shaft of a lead plate displacement driving motor (146) fixed on the horizontal support plate (147).

4. An X-ray imaging scanning device according to claim 3, characterized in that: A longitudinal support beam (126), a guiding slide rod (127) and a guiding driving motor (129) are fixed on the support rotating disk surface (109). A guiding driving lead screw (128) is fixed on the output shaft of the guiding driving motor (129). The top end of the guiding slide rod (127) is fixedly matched with the top end of the longitudinal support beam (126). The top end of the guiding driving lead screw (128) is rotationally matched with the top end of the longitudinal support beam (126). The adjusting cross frame (130) is slidably matched with the guiding slide rod (127) and is in threaded driving cooperation with the guiding driving lead screw (128).

5. An X-ray imaging scanning device according to claim 4, characterized in that: A foot pedal (106) is arranged below the middle of the X-ray detector (132) and the lead plate (152). The foot pedal (106) is fixed at the top end of a foot pedal support column (107). The foot pedal support column (107) is fixed on the base (103). A support limiting circular wall (104) is fixed on the base (103). A support rotating disk surface (109), a terminal driving gear ring (110) and an intermediate driving gear ring (111) are rotationally installed on the inner wall of the support limiting circular wall (104). The support rotating disk surface (109), the terminal driving gear ring (110) and the intermediate driving gear ring (111) cannot axially displace on the support limiting circular wall (104). Two symmetrically arranged grooves are formed at the circumference of the support rotating disk surface (109). The grooves are composed of an extrusion inclined surface (120), a pushing surface (124) and a supporting surface (125). An extrusion column (122) is in contact friction cooperation between the extrusion inclined surface (120) and the support limiting circular wall (104). A toggle pin (123) is in contact cooperation with one side of the extrusion column (122) facing the pushing surface (124). The extrusion column (122) is elastically connected with the supporting surface (125) through an elastic rubber pad (121).

6. An X-ray imaging scanning device according to claim 5, characterized in that: All the shift lever pins (123) are fixed on the end drive gear ring (110), wherein the support rotating disk surface (109) is rotatably sleeved on the pedal support column (107). A central driving gear (119) is rotatably sleeved on the circumferential surface of the pedal support column (107) below the support rotating disk surface (109). A barrel shaft (118) is coaxially fixed on the central driving gear (119), and the barrel shaft (118) is rotatably sleeved on the pedal support column (107). The central driving gear (119) and the end drive gear ring (110) are meshed and driven by a planetary speed regulating gear (116). The planetary speed regulating gear (116) is rotatably mounted on a planetary speed regulating gear bracket (117), and the planetary speed regulating gear bracket (117) is fixed on the intermediate drive gear ring (111). A central driven gear (115) is coaxially fixed on the barrel shaft (118). A first driving motor (108) and a second driving motor (112) are fixed on the base (103). A first driving gear (114) and a second driving gear (113) are respectively fixed on the output shafts of the first driving motor (108) and the second driving motor (112). The first driving gear (114) is meshed and driven with the intermediate drive gear ring (111), and the second driving gear (113) is meshed and driven with the central driven gear (115). A dust-proof cover plate (105) covers the top of the support limiting circular wall (104) and the support rotating disk surface (109). The dust-proof cover plate (105) is rotatably matched with the support limiting circular wall (104), the dust-proof cover plate (105) is relatively stationary with the support rotating disk surface (109), and the dust-proof cover plate (105) is rotatably matched with the pedal support column (107).

7. An X-ray imaging scanning device according to claim 6, characterized in that: The base (103) is fixed inside the embedded box body (101). A circular opening (102) is formed in the top of the embedded box body (101). A bridge plate (150) is fixedly arranged at the edge of the circular opening (102) in a manner that is convenient for disassembly.

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