A CT tube precision adjustment device and adjustment method

Abstract

The invention relates to the field of CT tube manufacturing, and in particular to a CT tube precision adjustment device and adjustment method, comprising a tube bracket for installing a CT tube and a CT rotor, wherein a guide rail arranged in the Z direction is fixedly connected to the tube bracket, a parallelogram slider is arranged on the guide rail, tube fixing plates fixed to the tube are closely attached to the two sides of the parallelogram slider in the X direction, connecting plates are arranged on the two sides of the parallelogram slider in the Z direction, two ends of the connecting plate are fixedly connected to the tube fixing plate, a screw hole 1 and a screw hole 2 are provided on the connecting plate, a Z-direction adjustment screw abutting against the guide rail is arranged in the screw hole 1, an X-direction adjustment screw abutting against the parallelogram slider is arranged in the screw hole 2, the two Z-direction adjustment screws are located on the same axis, and the two X-direction adjustment screws are centrally symmetrical; the advantages are: the device has a compact structure and a small volume, and the device can realize separate adjustment of the X direction, the Z direction and the angle without affecting each other; the X direction can be finely adjusted with high precision.

Description

Technical Field

[0001] The invention relates to the field of CT tube manufacturing, and in particular to a CT tube precision adjustment device and an adjustment method. Background Art

[0002] During installation and maintenance, the CT tube needs to be adjusted to achieve accurate position to ensure the scanning effect. In the prior art, the position of the CT tube is generally adjusted by pushing and pulling the adjustment screws in the X and Z directions, but this solution has the following shortcomings: 1. When adjusting in the X and Z directions, the positions affect each other, and it is difficult to accurately adjust to the required position. It is necessary to adjust the two directions repeatedly, which takes a long time; 2. For the X-axis position with higher precision requirements (0.01mm deviation requirement), fine adjustment cannot be achieved due to the mutual influence of the X and Z directions; 3. The CT tube angle cannot be slightly adjusted. Summary of the invention

[0003] In order to solve the above problems, one of the objectives of the present invention is to provide a CT tube precision adjustment device for realizing precise fine adjustment of the CT tube.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A CT tube precision adjustment device comprises a tube bracket for installing a CT tube and a CT rotor, wherein a guide rail arranged in the Z direction is fixedly connected to the tube bracket, a parallelogram slider is arranged on the guide rail, tube fixing plates fixed to the tube are tightly attached to both sides of the parallelogram slider in the X direction, connecting plates are arranged on both sides of the parallelogram slider in the Z direction, both ends of the connecting plate are fixedly connected to the tube fixing plate, a screw hole 1 and a screw hole 2 are arranged on the connecting plate, a Z-direction adjustment screw abutting against the guide rail is arranged in the screw hole 1, an X-direction adjustment screw abutting against the parallelogram slider is arranged in the screw hole 2, the two Z-direction adjustment screws are located on the same axis, and the two X-direction adjustment screws are centrally symmetrical.

[0006] Furthermore, screw holes three are provided at both ends of the tube fixing plate, and tube connecting screws are provided in the screw holes three. The tube connecting screws are connected to the CT tube after passing through the tube brackets.

[0007] Furthermore, a screw hole four is provided on the ball tube fixing plate, and a bracket connecting screw one connected to the ball tube bracket is provided in the screw hole four.

[0008] Furthermore, screw holes five are provided at both ends of the guide rail, and bracket connecting screws two connected to the ball tube bracket are provided in the screw holes five.

[0009] Furthermore, a guide groove matching the guide rail is provided on the parallelogram slider, a long hole arranged in the Z direction is provided on the bottom surface of the guide groove, and clearance holes opposite to the screw hole five are provided at both ends of the long hole, a screw hole six opposite to the long hole is provided on the guide rail, and a locking screw connected to the screw hole six is ​​provided in the long hole.

[0010] Furthermore, a pin shaft mounting hole 1 is provided on the guide rail, a pin shaft mounting hole 2 which is coaxial with the pin shaft mounting hole is provided on the tube bracket, and pin shafts are installed in the pin shaft mounting holes 1 and 2; screw holes 7 are provided on both end faces of the connecting plate in the X direction, and an angle adjustment screw which abuts against the CT rotor is provided in the screw hole 7 of at least one connecting plate.

[0011] The second object of the present invention is to provide an adjustment method for the above-mentioned adjustment device, including angle adjustment, X-direction adjustment and Z-direction adjustment;

[0012] The angle adjustment comprises the following steps:

[0013] S01: Loosen the bracket connecting screw 1, bracket connecting screw 2 and locking screw;

[0014] S02: Synchronously rotate the angle adjustment screws on the connecting plate so that one side is screwed in and the other side is screwed out. During the rotation of the adjustment screws, the ball tube fixing plate and the ball tube rotate around the pin until they reach the designed angle position;

[0015] S03: Tighten the bracket connecting screw 1, bracket connecting screw 2 and locking screw;

[0016] The X-direction adjustment comprises the following steps:

[0017] S01: Loosen the bracket connection screw 1 and the locking screw, and screw in the angle adjustment screw on the moving direction of the tube, so that a gap is created between the adjustment screw in this direction and the CT rotor, and the size of the gap is exactly equal to the moving distance of the CT tube;

[0018] S02: Turn the X-direction adjustment screw to slide the parallelogram slider. The sliding of the parallelogram slider drives the tube fixing plate and the CT tube to move along the X direction until the angle adjustment screw on the gap side contacts the CT rotor.

[0019] S03: Unscrew the angle adjustment screw on the other side until the angle adjustment screw contacts the CT rotor;

[0020] S04: Tighten the bracket connecting screw 1 and the locking screw;

[0021] The Z-direction adjustment comprises the following steps:

[0022] S01: Loosen the bracket connection screw 1 and the locking screw;

[0023] S02: Turn the Z-axis adjusting screw to move the tube fixing plate and the tube in the Z-axis along the guide rail until they reach the designed position;

[0024] S03: Tighten the bracket connecting screw 1 and the locking screw.

[0025] The advantages of the present invention are:

[0026] 1. The device has a compact structure and small size. It can realize the separate adjustment of X direction, Z direction and angle without affecting each other.

[0027] 2. X-axis can be fine-tuned with high precision;

[0028] 3. No need for repeated adjustments, which saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure in which the CT tube adjustment device is installed in the CT rotor in the embodiment;

[0030] Figure 2 for Figure 1 Explosion diagram of

[0031] Figure 3 It is a schematic diagram of the structure of the utility model in an embodiment;

[0032] Figure 4 for Figure 3 A top view schematic diagram of

[0033] Figure 5 for Figure 3 Schematic diagram from top view;

[0034] Figure 6 for Figure 3 Explosion diagram of

[0035] Figure 7 is a schematic top view of the guide rail in the embodiment;

[0036] Figure 8 for Figure 7 AA cross-sectional view in FIG.

[0037] Fig. 9 for Figure 1 A top view schematic diagram of

[0038] Fig.10 for Fig. 9 BB cross-sectional view;

[0039] Fig.11 for Fig. 9 Schematic diagram of CC cross-section;

[0040] Description of symbols

[0041] Ball tube bracket 1, guide rail 2, parallelogram slider 3, ball tube fixing plate 4, connecting plate 5, screw hole one 6, screw hole two 7, screw hole three 8, screw hole four 9, screw hole five 10, screw hole six 11, screw hole seven 12, Z-axis adjusting screw 13, X-axis adjusting screw 14, guide groove 15, long hole 16, pin mounting hole one 17, pin mounting hole two 18, CT rotor 19, angle adjustment screw 20, give way hole 21. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below with reference to the embodiments.

[0043] In the prior art, the CT tube is mounted on the CT rotor via a tube bracket, such as Figure 1 and 2 As shown, the CT rotor 19 has a mounting hole at the mounting bracket. The CT tube adjustment device of this embodiment is located at the mounting hole of the CT rotor. The CT tube is installed in the tube bracket 1, and the adjustment device is installed on the top surface of the tube bracket 1. The spatial coordinate system of the tube in this application is as follows Figure 2 as shown in .

[0044] like Figure 3-8 As shown, it includes a guide rail 2 arranged in the Z direction, and screw holes 5 10 are provided at both ends of the guide rail 2. The screw holes 5 10 are provided with two bracket connecting screws connected to the tube bracket 1. A parallelogram slider 3 is provided on the guide rail 2, and a guide groove 15 matching with the guide rail 2 is provided on the parallelogram slider 3. A long hole 16 arranged in the Z direction is provided on the bottom surface of the guide groove 15. Both ends of the long hole 16 are provided with clearance holes 21 opposite to the screw hole 5 10. The guide rail 2 is provided with six screw holes 11 opposite to the long hole 16. The provision of the clearance hole 21 facilitates the screwing of the bracket connecting screw 2 in the screw hole 5 10. A locking screw connected to the screw hole 6 11 is provided in the long hole 16. When the locking screw is tightened, the nail cap of the locking screw is pressed on the parallelogram slider 3, so that the parallelogram slider 3 cannot slide along the guide rail 2. After the locking screw is loosened, the parallelogram slider 3 releases the restraining force.

[0045] The parallelogram slider 3 has a ball tube fixing plate 4 fixed to the ball tube in close contact on both sides of the X direction (since the two side surfaces of the parallelogram slider 3 in the X direction are inclined surfaces, the surface of the ball tube fixing plate 4 opposite to the parallelogram slider 3 is also an inclined surface), and a connecting plate 5 is provided on both sides of the parallelogram slider 3 in the Z direction, and both ends of the connecting plate 5 are fixed to the ball tube fixing plate 4, and a screw hole 1 6 and a screw hole 2 7 are provided on the connecting plate 5, a Z-direction adjusting screw 13 abutting against the guide rail 2 is provided in the screw hole 1 6, and an X-direction adjusting screw 14 abutting against the parallelogram slider 3 is provided in the screw hole 2 7, and the two Z-direction adjusting screws 13 are located on the same axis, and the two X-direction adjusting screws 14 are centrally symmetrical. The two ends of the tube fixing plate 4 are provided with screw holes 3 8, and the screw holes 3 8 are provided with tube connecting screws. The tube connecting screws pass through the tube bracket 1 and are connected to the CT tube. The tube fixing plate 4 is provided with screw holes 4 9, and the screw holes 4 9 are provided with bracket connecting screws 1 connected to the tube bracket 1.

[0046] In order to facilitate angle adjustment, a pin shaft mounting hole 17 is also provided on the guide rail 2, and a pin shaft mounting hole 2 18 coaxial with the pin shaft mounting hole 17 is provided on the tube bracket 1, and pin shafts are installed in the pin shaft mounting holes 17 and 18; screw holes 7 12 are provided on both end faces of the connecting plate 5 in the X direction, and an angle adjustment screw 20 abutting against the CT rotor 19 is provided in the screw hole 7 12 of one of the connecting plates 5, such as Fig. 9 As shown, the angle adjustment screw 20 abuts against the inner wall of the mounting hole of the CT rotor 19 .

[0047] The adjustment method of this embodiment includes angle adjustment, X-axis adjustment and Z-axis adjustment; wherein the angle adjustment includes the following steps:

[0048] S01: Loosen the bracket connecting screw 1, bracket connecting screw 2 and locking screw;

[0049] S02: Synchronously rotate the angle adjustment screw 20 on the connecting plate 5 so that one side is screwed in and the other side is screwed out. During the rotation of the adjustment screw, the ball tube fixing plate 4 and the ball tube rotate around the pin until they reach the designed angle position;

[0050] S03: Tighten the bracket connecting screw 1, bracket connecting screw 2 and locking screw.

[0051] X-direction adjustment includes the following steps:

[0052] S01: Loosen the bracket connecting screw 1 and the locking screw, and screw in the angle adjustment screw 20 on the moving direction of the tube, so that a gap is generated between the adjustment screw in this direction and the CT rotor 19, and the size of the gap is exactly equal to the moving distance of the CT tube;

[0053] S02: Turn the X-direction adjustment screw 14 to slide the parallelogram slider 3. The sliding of the parallelogram slider 3 drives the tube fixing plate 4 and the CT tube to move along the X direction until the angle adjustment screw 20 on the gap side abuts against the CT rotor 19. Due to the complementary effects of the adjustment in the X and Z directions, the precision of the fine adjustment in the X direction is very high.

[0054] S03: Unscrew the angle adjustment screw 20 on the other side until the angle adjustment screw 20 abuts against the CT rotor 19;

[0055] S04: Tighten the bracket connecting screw 1 and the locking screw;

[0056] Z-axis adjustment includes the following steps:

[0057] S01: Loosen the bracket connection screw 1 and the locking screw;

[0058] S02: Turn the Z-direction adjusting screw 13 to move the ball tube fixing plate 4 and the ball tube along the guide rail 2 in the Z direction until they reach the designed position;

[0059] S03: Tighten the bracket connecting screw 1 and the locking screw.

[0060] During the adjustment process, the angle adjustment screw 20 abuts against the inner wall of the mounting hole of the CT rotor 19 to play the following role: when adjusting in the X direction, the operator can observe whether the X-direction movement is in place; when adjusting in the Z direction, the abutment on both sides further ensures the linearity of the Z-direction movement.

[0061] The above embodiments are only used to explain the concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A CT tube precision adjustment device, comprising a tube bracket for connecting a CT tube and a CT rotor, characterized in that: A guide rail arranged in the Z direction is fixedly connected to the ball tube bracket, a parallelogram slider is arranged on the guide rail, ball tube fixing plates fixed to the ball tube are closely attached to both sides of the parallelogram slider in the X direction, connecting plates are arranged on both sides of the parallelogram slider in the Z direction, both ends of the connecting plate are fixedly connected to the ball tube fixing plate, screw hole 1 and screw hole 2 are arranged on the connecting plate, a Z-direction adjusting screw abutting against the guide rail is arranged in the screw hole 1, an X-direction adjusting screw abutting against the parallelogram slider is arranged in the screw hole 2, the two Z-direction adjusting screws are located on the same axis, and the two X-direction adjusting screws are centrally symmetrical; Screw holes three are provided at both ends of the tube fixing plate, and tube connecting screws are provided in the screw holes three. The tube connecting screws are connected to the CT tube after passing through the tube brackets; screw holes four are provided on the tube fixing plate, and bracket connecting screws one connected to the tube bracket is provided in the screw holes four; screw holes five are provided at both ends of the guide rail, and bracket connecting screws two connected to the tube bracket are provided in the screw holes five; guide grooves matching the guide rails are provided on the parallelogram slider, and a long hole arranged in the Z direction is provided on the bottom surface of the guide groove, and clearance holes opposite to the screw holes five are provided at both ends of the long holes, and screw holes six opposite to the long holes are provided on the guide rail, and locking screws connected to the screw holes six are provided in the long holes; The guide rail is provided with a pin shaft mounting hole 1, the tube bracket is provided with a pin shaft mounting hole 2 which is coaxial with the pin shaft mounting hole, and pin shafts are mounted in the pin shaft mounting holes 1 and 2; screw holes 7 are respectively provided on the two end faces of the connecting plate in the X direction, and an angle adjustment screw which abuts against the CT rotor is arranged in the screw hole 7 of at least one connecting plate.

2. A method for adjusting the CT tube precision adjustment device according to claim 1, characterized in that: Including angle adjustment, X-axis adjustment and Z-axis adjustment; The angle adjustment comprises the following steps: S01: Loosen the bracket connecting screw 1, bracket connecting screw 2 and locking screw; S02: Synchronously rotate the angle adjustment screws on the connecting plate so that one side is screwed in and the other side is screwed out. During the rotation of the adjustment screws, the ball tube fixing plate and the ball tube rotate around the pin until they reach the designed angle position; S03: Tighten the bracket connecting screw 1, bracket connecting screw 2 and locking screw; The X-direction adjustment comprises the following steps: S01: Loosen the bracket connection screw 1 and the locking screw, and screw in the angle adjustment screw on the moving direction of the tube, so that a gap is created between the adjustment screw in this direction and the CT rotor, and the size of the gap is exactly equal to the moving distance of the CT tube; S02: Turn the X-direction adjustment screw to slide the parallelogram slider. The sliding of the parallelogram slider drives the tube fixing plate and the CT tube to move along the X direction until the angle adjustment screw on the gap side contacts the CT rotor. S03: Unscrew the angle adjustment screw on the other side until the angle adjustment screw contacts the CT rotor; S04: Tighten the bracket connecting screw 1 and the locking screw; The Z-direction adjustment comprises the following steps: S01: Loosen the bracket connection screw 1 and the locking screw; S02: Turn the Z-axis adjusting screw to move the ball tube fixing plate and the ball tube along the guide rail in the Z-axis until they reach the designed position; S03: Tighten the bracket connecting screw 1 and the locking screw.

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