Motor frame for regulating and controlling SID and X-ray detection equipment

Abstract

The utility model discloses a motor frame for regulating and controlling SID and X-ray detection equipment, and relates to the field of SID regulation and control, the motor frame comprises a ground rail and a support plate, and the support plate is provided with a mounting hole; limiting grooves are formed in the left side and the right side of the ground rail, limiting sliding sets are arranged on the two sides of the supporting plate, each limiting sliding set at least comprises three limiting mechanisms, each limiting mechanism comprises a disc, a rolling wheel and an eccentric shaft, and the eccentric shafts are fixedly connected with the discs in the posture that the axes are parallel and not collinear with the axes of the discs. The roller is coaxially and collinearly rotationally connected with the disc; the eccentric shaft is in threaded connection with the supporting plate; and the roller is attached to the groove wall of the limiting groove. The X-ray detection equipment comprises the electric rack for regulating the SID. Under the condition that the X-ray detection equipment is used for a long time, the bulb tube stand column can be limited left and right, so that the bulb tube center on the bulb tube stand column and the flat plate center on the flat plate stand column cannot be staggered, and the accuracy of an X-ray detection result is improved.

Description

Technical Field

[0001] The utility model relates to the field of SID control, in particular to a motor frame and X-ray detection equipment for SID control. Background Art

[0002] In X-ray inspection, SID refers to the source-image distance, that is, the distance between the X-ray source and the film. Existing vehicle-mounted X-ray machines are mostly products with a fixed focal length (SID) of 180 cm, capable of X-ray photography, or with a fixed focal length (SID) of 110 cm, capable of fluoroscopy. Some products also have both X-ray fluoroscopy and photographic inspection functions, but these functions are generally achieved by switching the X-ray tube between a fluoroscopy imaging device (SID of 110 cm) and a photographic imaging device (SID of 180 cm). For example, Chinese utility model patent publication number CN214104914U discloses "A Physical Examination Vehicle and Its On-Vehicle X-ray Detection Equipment," which adjusts the SID by sliding the tube column along the ground rail to move the tube column closer to or further away from the flat plate column, thus increasing the application range of X-ray inspection.

[0003] As can be seen from the above, in this field, the technology for controlling the distance between the tube column and the plate column is already quite mature. However, in actual use, since the tube column moves along the ground rail, it is easy to deviate in the left and right direction (perpendicular to the ground rail), resulting in the center of the tube on the tube column and the center of the plate on the plate column being misaligned, thereby affecting the X-ray detection results. Even if the ground rail has a limit on the left and right deviation of the tube column, that is, it limits the left and right deviation of the tube column, after long-term use, the limit surface will be deformed due to long-term limit compression (the limit surface and the side of the tube column are in contact to ensure the limit, and the limit surface is squeezed when the tube column deviates left and right). That is, the limit size (the distance between the left and right limit surfaces) becomes larger, so that the limit surface can no longer limit the left and right movement of the tube column.

[0004] In order to solve the above problems, it is necessary to design a new motor frame for regulating SID. Utility Model Content

[0005] The purpose of the present utility model is to provide a motor frame and X-ray detection equipment for adjusting SID in response to the above-mentioned problems, which can ensure that the tube column can be limited to the left and right when the X-ray detection equipment is used for a long time, thereby ensuring that the center of the tube on the tube column will not be misaligned with the center of the plate on the plate column, thereby ensuring the accuracy of the X-ray detection results.

[0006] The technical solution adopted by the utility model is as follows: an electric motor frame for regulating SID, comprising a ground rail and a support plate, wherein the support plate is provided with mounting holes for mounting a ball tube column; limit grooves are provided on the left and right sides of the ground rail, the support plate is located above the ground rail and a plurality of limit sliding groups are provided on both sides of the support plate, each limit sliding group has at least three limit mechanisms respectively used to fit with the three inner surfaces of the limit groove, the limit mechanism comprises a disc, a roller and an eccentric shaft, the eccentric shaft is fixedly connected to the disc with its axis parallel and non-collinear with the axis of the disc, the roller is coaxially and colinearly connected to the disc; the eccentric shaft is threadedly connected to the support plate; the roller fits with the groove wall of the limit groove.

[0007] Furthermore, a nut is coaxially fixed on the eccentric shaft.

[0008] Furthermore, two chains are connected between the front and rear ends of the ground rail, and a servo motor is fixed on the support plate. A driving sprocket matching the chain is coaxially located on the output shaft of the servo motor, and the driving sprocket is located between the two chains and meshed with the chains; the support plate passes through the two chains and is located between the two chains, or a gap is provided on the support plate to avoid the chain.

[0009] Furthermore, a plurality of driven sprockets are provided on the support plate or the servo motor, and the driven sprockets cooperate with the driving sprocket to tension the two chains.

[0010] Furthermore, the servo motor is electrically connected to the output end of the controller, and the energy input end of the controller is electrically connected to a battery or an external power grid.

[0011] Furthermore, the output shaft of the servo motor is coaxially connected to a potentiometer, and the potentiometer is connected to a signal input terminal of the controller.

[0012] Furthermore, a plurality of positioning holes are preset on the floor rail, and a shift rod is provided on the floor rail. The shift rod is arranged vertically and is sleeved with a tension spring. One end of the tension spring is fixedly connected to the top of the shift rod, and the other end of the tension spring is fixedly connected to the support plate. The shift rod can be inserted into the positioning hole under the action of the tension spring.

[0013] Furthermore, the bottom of the lever is inlaid with rolling balls.

[0014] Furthermore, the support plate is threadedly connected to a locking rod, which is vertically arranged and passes through the support plate.

[0015] An X-ray detection device comprises a tube column with a tube, a flat plate column with a flat plate and a motor frame for adjusting SID, wherein the flat plate column is fixed in the length direction of the ground rail; and the tube column is fixed on a support plate.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The utility model uses three limiting mechanisms to fit the three inner surfaces of the limiting groove respectively, so as to achieve left and right, up and down limiting of the support plate, especially realizing left and right limiting, thereby preventing the tube column from shifting left and right when sliding along the ground rail, ensuring that the center of the tube on the tube column will not be misaligned with the center of the plate on the plate column, thereby ensuring the accuracy of the X-ray detection results;

[0018] 2. In the case where the surface in the limiting groove that is in contact with the roller is deformed, the utility model can rotate the eccentric shaft to make the disc rotate eccentrically, thereby moving the roller horizontally, so that the roller can maintain contact with the inner surface of the limiting groove, thereby achieving the effect of maintaining the limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the limit groove disclosed in the present utility model limiting the left and right positions of the support plate;

[0022] Figure 3 This is a schematic diagram of the distribution of three limiting mechanisms in the limiting sliding group disclosed in the present utility model;

[0023] Figure 4 Schematic diagram of the connection between the limiting mechanism and the support plate;

[0024] Figure 5 It is a structural diagram of the limiting mechanism;

[0025] Figure 6 Schematic diagram of the connection between the driving sprocket, the driven sprocket and the chain;

[0026] Figure 7 Schematic diagram of the connection between the shift lever, locking lever, support plate and ground rail;

[0027] Markings in the figure: 1-ground rail; 11-limiting groove; 2-support plate; 21-mounting hole; 22-notch; 3-limiting sliding group; 31-limiting mechanism; 311-roller; 312-disc; 313-eccentric shaft; 4-servo motor; 41-driving sprocket; 42-driven sprocket; 5-potentiometer; 51-locking plate; 52-limiting rod; 6-shift lever; 61-tension spring; 62-ball; 7-locking rod; 8-chain. DETAILED DESCRIPTION

[0028] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0029] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0030] Example 1

[0031] like Figure 1-Figure 7 As shown, a motor frame for regulating SID includes a ground rail 1 and a support plate 2, the support plate 2 is provided with a mounting hole 21, and a ball tube column with a ball tube can be installed on the support plate 2 through the mounting hole 21; there are limit grooves 11 on the left and right sides of the ground rail 1, and the limit groove 11 is an inverted U-shape, that is, the two sides of the limit groove 11 are located above and below the slot, and the bottom of the slot is opposite to the slot; the support plate 2 is located above the ground rail 1 and a plurality of limit sliding groups 3 are provided on both sides of the support plate 2, each limit sliding group 3 has at least three limit mechanisms 31 for respectively fitting with the three inner surfaces of the limit groove 11, that is, the limit sliding group 3 is located in the limit groove 11, and one of the limit mechanisms 31 abuts against the upper side of the limit groove 11, the second limit mechanism 31 abuts against the lower side of the limit groove 11, and the third limit mechanism 31 abuts against the bottom of the limit groove 11; as shown Figure 5 As shown, the limiting mechanism 31 includes a disc 312, a roller 311 and an eccentric shaft 313. The eccentric shaft 313 is fixedly connected to the disc 312 with its axis parallel to and non-collinear with the axis of the disc 312. The roller 311 is coaxially and collinearly connected to the disc 312 for rotation; the eccentric shaft 313 is threadedly connected to the support plate 2; and the roller 311 is in contact with the wall of the limiting groove 11.

[0032] In this embodiment, three limiting mechanisms 31 are respectively fitted with the three inner surfaces of the limiting groove 11 to achieve left and right, up and down limiting of the support plate 2, especially achieving left and right limiting, thereby avoiding left and right deviation of the tube column when sliding along the ground rail 1, ensuring that the center of the tube on the tube column will not be misaligned with the center of the flat plate on the flat plate column, thereby ensuring the accuracy of the X-ray detection results; if the surface of the limiting groove 11 that is in contact with the roller 311 is deformed, the eccentric shaft 313 can be rotated to make the disc 312 rotate eccentrically, thereby causing the roller 311 to translate, so that the roller 311 can maintain contact with the inner surface of the limiting groove 11, thereby achieving the effect of maintaining the limit.

[0033] Example 2

[0034] Based on Example 1, a specific implementation method that can be implemented is further proposed.

[0035] A nut is coaxially fixed to the eccentric shaft 313 to facilitate the operator to rotate the eccentric shaft 313 , that is, the operator can use a tool (such as a wrench) to rotate the eccentric shaft 313 .

[0036] Example 3

[0037] Based on any one of the implementations in Examples 1-2, a feasible specific implementation is further proposed.

[0038] A feasible implementation method is as follows: Figure 1 、 Figure 6 As shown, two chains 8 are connected between the front and rear ends of the ground rail 1, and the two chains 8 are arranged in the vertical direction; a servo motor 4 is fixed on the support plate 2, and a driving sprocket 41 matching the chain 8 is coaxially arranged on the output shaft of the servo motor 4, and the driving sprocket 41 rotates following the output shaft of the servo motor 4, and the driving sprocket 41 is located between the two chains 8 and is meshed with the chains 8; the driving sprocket 41 is enabled to move on the two chains 8, thereby driving the servo motor 4 to move along the chains 8, and further enabling the support plate 2 equipped with the ball tube column to move along the chains 8, that is, enabling the ball tube column to slide between the front and rear ends of the ground rail 1; the support plate 2 passes through the two chains 8 and is located between the two chains 8, or a notch 22 is provided on the support plate 2 to avoid the chains 8, effectively preventing spatial interference between the support plate 2 and the chains 8.

[0039] A feasible implementation method is that a plurality of driven sprockets 42 are also provided on the supporting plate 2 or the outer shell of the servo motor 4, that is, while the driving sprocket 41 rotates along the chain 8 to achieve walking, the driven sprocket 42 follows the driving sprocket 41 to walk along the chain 8, and the walking method is rotation; the driven sprocket 42 cooperates with the driving sprocket 41 to tension the two chains 8, that is, the driving sprocket 41 and the driven sprocket 42 support the two chains 8, and then tension the two chains 8, effectively preventing the chain 8 from detaching from the driving sprocket 41.

[0040] A feasible implementation method is that the servo motor 4 is electrically connected to the output end of the controller, and the energy input end of the controller is electrically connected to the battery or the external power grid. The controller obtains electrical energy from the battery or the power grid and outputs it to the servo motor 4, and the servo motor 4 obtains electrical energy to work; that is, the controller controls the servo motor 4 to switch between starting and stopping.

[0041] In a feasible embodiment, the output shaft of the servo motor 4 is coaxially connected to a potentiometer 5, which is connected to the signal input end of the controller. In this embodiment, the potentiometer 5 is equivalent to a displacement sensor, which can obtain the number of rotations of the servo motor 4, thereby obtaining the distance that the driving sprocket 41 travels on the chain 8, and then obtaining the distance that the support plate 2 moves along the ground rail 1 with the ball tube column; the specific structure of the potentiometer 5 is known to those skilled in the art, and it includes an inner core and a shell, and the inner core is connected to the output shaft of the servo motor 4 through a coupling; the shell is fixed on a locking plate 51, and the locking plate 51 is restricted by a limiting rod 52, and the limiting rod 52 is fixed to the outer shell of the servo motor 4; specifically, one end of the locking plate 51 is connected to the shell, and the other end of the locking plate 51 has a notch 22, and the limiting rod 52 is inserted into the notch 22; the shell is locked by the limiting rod 52 and the locking plate 51 to prevent the shell from rotating with the inner core, and the inner core rotates with the output shaft of the servo motor 4, that is, the potentiometer 5 changes the resistance value through the relative rotation of the inner core and the shell, thereby obtaining the number of rotations of the servo motor 4.

[0042] Example 4

[0043] Based on any one of the implementations in Examples 1-3, a feasible specific implementation is further proposed.

[0044] A feasible implementation method is as follows: Figure 1-Figure 7 As shown, a plurality of positioning holes are preset on the floor rail 1, and a detent rod 6 is provided on the floor rail 1, which passes through the support plate 2. The detent rod 6 is arranged vertically and is sleeved with a tension spring 61. One end of the tension spring 61 is fixedly connected to the top of the detent rod 6, and the other end of the tension spring 61 is fixedly connected to the support plate 2. The detent rod 6 can be inserted into the positioning hole under the action of the tension spring 61; specifically, the top of the detent rod 6 has a rod cap, and the tension spring 61 is fixed between the rod cap and the support plate 2; when the detent rod 6 enters the positioning hole, the bottom of the detent rod 6 rests on the floor rail 1, and at this time the tension spring 61 is stretched and has elastic potential energy; when the detent rod 6 moves to the positioning hole position following the support plate 2, the detent rod 6 is acted upon by the elastic force of the tension spring 61, and the detent rod 6 is automatically inserted into the positioning hole to achieve positioning.

[0045] In the above embodiment, positioning holes are provided on the ground rail 1 at positions 110 cm and 180 cm away from the installation position of the flat plate column.

[0046] Furthermore, since the lever 6 moves along the ground rail 1 following the support plate 2, and the bottom of the lever 6 contacts the ground rail 1 and the lever 6 is acted upon by the tension spring 61, there is an extrusion force between the lever 6 and the ground rail 1, which causes a large friction between the lever 6 and the ground rail 1 when the lever 6 moves. This friction will damage the lever 6 and the ground rail 1 and increase the resistance to the movement of the support plate 2. In order to solve this problem, the bottom of the lever 6 is rolled and inlaid with a ball 62. The ball 62 can convert the sliding friction pair between the lever 6 and the ground rail 1 into a rolling friction pair, thereby reducing the friction between the lever 6 and the ground rail 1; of course, when unlocking, the operator only needs to pull the lever 6 to overcome the elastic force of the tension spring 61.

[0047] A feasible implementation method is that if the support plate 2 needs to be positioned at a position other than the above-mentioned positioning hole in actual use, a locking rod 7 can be provided, and the support plate 2 is threadedly connected to the locking rod 7. The locking rod 7 is arranged vertically and passes through the support plate 2. When the support plate 2 reaches the set position, the locking rod 7 can be rotated so that the locking rod 7 is pressed tightly against the ground rail 1, thereby completing the locking; of course, when unlocking, it is only necessary to rotate the locking rod 7 in the opposite direction.

[0048] In this embodiment, depending on actual application conditions, the shift lever 6 and the locking lever 7 can exist separately or simultaneously. When the shift lever 6 and the locking lever 7 exist simultaneously, the shift lever 6 and the locking lever 7 are respectively located on the front and rear sides of the support plate 2 .

[0049] Example 5

[0050] An X-ray detection device includes a tube column with a tube, a flat plate column with a flat plate, and a motor frame for adjusting SID as described in any one of embodiments 1-4, wherein the flat plate column is fixed in the length direction of a ground rail 1; the tube column is fixed on a support plate 2, and the SID can be adjusted and controlled by moving the support plate 2 in the motor frame for adjusting SID along the ground rail 1.

[0051] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A motor frame for regulating SID, characterized by: The invention comprises a ground rail (1) and a support plate (2), wherein the support plate (2) is provided with a mounting hole (21) for mounting a ball tube column; the ground rail (1) has a limit groove (11) on the left and right sides; the support plate (2) is located above the ground rail (1) and a plurality of limit sliding groups (3) are provided on both sides of the support plate (2); each limit sliding group (3) has at least three limit mechanisms ( 31), the limiting mechanism (31) comprises a disc (312), a roller (311) and an eccentric shaft (313); the eccentric shaft (313) is fixedly connected to the disc (312) with its axis parallel and non-collinear with the axis of the disc (312); the roller (311) and the disc (312) are coaxially and collinearly connected for rotation; the eccentric shaft (313) is threadedly connected to the support plate (2); and the roller (311) is in contact with the groove wall of the limiting groove (11).

2. The motor frame according to claim 1, characterized in that: A nut is coaxially fixed on the eccentric shaft (313).

3. The motor frame according to claim 1, characterized in that: Two chains (8) are connected between the front and rear ends of the ground rail (1), and a servo motor (4) is fixed on the support plate (2). A driving sprocket (41) matching the chain (8) is coaxially arranged on the output shaft of the servo motor (4), and the driving sprocket (41) is located between the two chains (8) and meshed with the chains (8); the support plate (2) passes through the two chains (8) and is located between the two chains (8), or a notch (22) for avoiding the chain (8) is provided on the support plate (2).

4. The motor frame according to claim 3, characterized in that: A plurality of driven sprockets (42) are also provided on the support plate (2) or the servo motor (4), and the driven sprockets (42) cooperate with the driving sprocket (41) to tension the two chains (8).

5. The motor frame according to claim 3, characterized in that: The servo motor (4) is electrically connected to the output end of the controller, and the energy input end of the controller is electrically connected to a battery or an external power grid.

6. The motor frame according to claim 5, characterized in that: The output shaft of the servo motor (4) is coaxially connected to a potentiometer (5), and the potentiometer (5) is connected to a signal input terminal of a controller.

7. The motor frame according to claim 1, characterized in that: A plurality of positioning holes are preset on the floor rail (1). A shift rod (6) is provided on the floor rail (1). The shift rod (6) is arranged vertically and is sleeved with a tension spring (61). One end of the tension spring (61) is fixedly connected to the top of the shift rod (6), and the other end of the tension spring (61) is fixedly connected to the support plate (2). Under the action of the tension spring (61), the shift rod (6) can be inserted into the positioning hole.

8. The motor frame according to claim 7, characterized in that: The bottom of the shifting rod (6) is inlaid with a rolling ball (62).

9. The motor frame according to claim 1, characterized in that: The support plate (2) is threadedly connected with a locking rod (7), which is arranged vertically and passes through the support plate (2).

10. An X-ray detection device, characterized in that: It comprises a tube column with a tube, a flat column with a flat plate and a motor frame for regulating SID according to any one of claims 1 to 9, wherein the flat column is fixed in the length direction of the ground rail (1); and the tube column is fixed on a support plate (2).

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