Multi-degree-of-freedom adjusting platform of CT scanner

Abstract

The invention discloses a multi-degree-of-freedom adjusting platform of a CT scanner, and belongs to the technical field of industrial CT, the multi-degree-of-freedom adjusting platform is characterized in that a circular bottom plate is arranged, a position adjusting assembly and a limiting assembly are arranged on the circular bottom plate, and a mounting ring plate can be conveniently disassembled and replaced by arranging a self-locking unit, so that a required clamp can be conveniently replaced according to a to-be-detected part; under the action of a strip-shaped sliding plate and a limiting rod, accidental movement of the strip-shaped sliding plate is avoided, position adjustment of a supporting annular plate in multiple angles and multiple directions can be achieved through the arrangement of a position adjusting assembly, and therefore a to-be-detected part can be conveniently moved to a needed state; the positions of the position adjusting rotating frame and the position adjusting shaft are locked, the situation that parts of the position adjusting assembly are damaged due to the fact that torque is too large is avoided, the stability of equipment can be kept, the problems of shaking or deviation and the like are not prone to occurring, and therefore the service life of the equipment is prolonged, and the safety of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial CT, and in particular to a multi-degree-of-freedom adjustment platform for a CT scanner. Background Art

[0002] In the field of industrial CT technology, the inspection and scanning of parts are of vital importance. CT scanners use X-ray and other technologies to accurately image parts in three dimensions, providing engineers with detailed internal structure information, which plays an irreplaceable role in ensuring product quality and performance. However, traditional CT scanners have many inconveniences when adjusting the position and angle of the parts to be inspected.

[0003] On the one hand, the traditional adjustment method often lacks sufficient flexibility and precision, and it is difficult to meet the inspection requirements of complex parts. On the other hand, due to the different shapes, sizes and materials of parts, different fixtures are required for fixing, and the traditional CT scanner is cumbersome and inefficient to replace the fixture. Therefore, the present invention provides a multi-degree-of-freedom adjustment platform for the CT scanner. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a multi-degree-of-freedom adjustment platform for a CT scanner, which overcomes the problems of low efficiency when replacing fixtures and many inconveniences when adjusting the position and angle of parts to be inspected.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-degree-of-freedom adjustment platform for a CT scanner, comprising a circular base plate, a positioning assembly being arranged on the circular base plate, the positioning assembly comprising a U-shaped slide plate and a supporting ring plate, a positioning swivel frame and a positioning axis being rotatably mounted on the U-shaped slide plate, a positioning rack being symmetrically slidably mounted on the positioning swivel frame, the positioning rack being used for adjusting the positions of two positioning racks, the supporting ring plates being fixedly connected to the positioning racks, a mounting ring plate being movably arranged on the supporting ring plate, a clamp being rotatably mounted on the mounting ring plate, a self-locking unit being arranged between the supporting ring plate and the mounting ring plate, a limiting assembly being further arranged on the circular base plate, the limiting assembly comprising two friction strips, two limiting circular plates one, and two limiting circular plates two, the friction strips being used for limiting the position of the positioning rack, the limiting circular plate one being used for limiting the position of the positioning swivel frame, and the limiting circular plate two being used for limiting the position of the positioning axis.

[0006] Furthermore, a square slide is slidably mounted on the circular bottom plate, the U-shaped slide is slidably mounted on the square slide, a spline shaft is fixedly mounted on the fixture, the axes of the fixture and the spline shaft are in the same straight line, a rotating motor is fixedly mounted on the support ring plate, and a spline sliding fit is formed when the output shaft of the rotating motor is engaged with the spline shaft.

[0007] Furthermore, the positioning rotating frame and the positioning shaft are rotatably connected, and the positioning rotating frame is symmetrically rotatably installed with positioning gears, which are meshed with corresponding positioning racks to form a gear rack pair, and a driving pulley is fixedly installed on the positioning shaft, and a transmission group 1 is arranged between the driving pulley and the two positioning gears.

[0008] Furthermore, the self-locking unit includes a strip slide symmetrically slidably mounted on the support ring plate, and four fixed short rods are fixedly arranged in a circular array on the mounting ring plate. The fixed short rods are all slidably matched with the support ring plate, and the fixed short rods are all provided with sliding grooves that match the ends of the strip slide. When the two ends of the strip slide are respectively engaged with the fixed short rods, the support ring plate and the mounting ring plate are in a fixed state.

[0009] Furthermore, a T-shaped slide is symmetrically installed on the support ring plate for sliding, and a limit rod is symmetrically fixed on the T-shaped slide. The limit rod slides with the corresponding strip slide. The limit rod is used to limit the position of the strip slide. A cam is symmetrically installed on the support ring plate for rotation. The cam is used to push the corresponding T-shaped slide to move.

[0010] Furthermore, a separation wheel is fixedly mounted on the side of the cam, teeth are evenly arranged on half of the circumference of the separation wheel, a separation rack is fixedly mounted on the bar-shaped slide plate, and when the teeth on the separation wheel are engaged with the separation rack, a gear rack pair is formed.

[0011] Furthermore, an unlocking strip plate is fixedly installed on the positioning rotating frame, an unlocking rack is symmetrically fixed on the unlocking strip plate, an unlocking gear is symmetrically rotatably installed on the supporting ring plate, and a gear rack pair is formed when the unlocking rack is engaged with the corresponding unlocking gear, a transmission group 2 is arranged between the unlocking gear and the corresponding cam, and a torsion spring is arranged between the cam and the supporting ring plate.

[0012] Furthermore, two fan-shaped slides are slidably installed on the U-shaped slide, and fan-shaped strips are symmetrically slidably installed on the adjustment rotating frame. The fan-shaped strips are rotatably connected to the corresponding fan-shaped slides, and the friction strips are fixedly installed on the corresponding fan-shaped strips. A friction circular plate 1 is fixedly set on the adjustment rotating frame, and two limit circular plates 1 are arranged on both sides of the friction circular plate 1. A friction circular plate 2 is fixedly set on the adjustment shaft, and two limit circular plates 2 are arranged on both sides of the friction circular plate 2. Two limit slides 1 and two limit slides 2 are also slidably installed on the U-shaped slide, and the friction circular plate 1 is fixedly installed on the corresponding limit slide 1, and the limit circular plate 2 is fixedly installed on the corresponding limit slide 2.

[0013] Furthermore, a linkage shaft is rotatably installed on the U-shaped slide, and a double-headed threaded screw rod 1, a double-headed threaded screw rod 2, and a double-headed threaded screw rod 3 are fixedly arranged on the linkage shaft. The threads at both ends of the double-headed threaded screw rod 1 respectively form a spiral pair with the corresponding limiting slide plate 1, the threads at both ends of the double-headed threaded screw rod 2 respectively form a spiral pair with the corresponding limiting slide plate 2, and the threads at both ends of the double-headed threaded screw rod 3 respectively form a spiral pair with the corresponding fan-shaped slide frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) By providing a self-locking unit, the present invention can facilitate the disassembly and replacement of the mounting ring plate, thereby facilitating the replacement of the required fixture according to the parts to be detected, and under the action of the strip slide and the limit rod, the strip slide is prevented from accidentally moving. (2) By providing an adjustment component, the present invention can achieve position adjustment of the supporting ring plate at multiple angles and in multiple directions, thereby facilitating the movement of the parts to be detected to the desired state. (3) By providing a limit component, the present invention locks the position of the adjustment rotating frame and the adjustment shaft, thereby avoiding damage to the parts of the adjustment component due to excessive torque, and can maintain the stability of the equipment, making it less likely to have problems such as shaking or offset, thereby improving the service life and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

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

[0017] Figure 3 It is a structural schematic diagram of the rotating motor of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the position adjustment component of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the self-locking unit of the present invention.

[0020] Figure 6 for Figure 5 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 7 It is a schematic diagram of the structure of the adjustment axis of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the positioning rotating frame of the present invention.

[0023] Fig. 9 for Figure 8 A local enlarged schematic diagram of point B in the middle.

[0024] Fig.10 It is a front view of the structure of the adjustment rotating frame of the present invention.

[0025] Fig.11 for Fig.10 A partial enlarged schematic diagram of point C in the middle.

[0026] Fig.12 It is a schematic structural diagram of the limiting component of the present invention.

[0027] Fig.13 It is a front view of the limiting assembly of the present invention.

[0028] Figure numerals: 101-circular bottom plate; 102-square slide; 103-auxiliary screw rod 1; 104-auxiliary motor; 105-linked pulley; 106-auxiliary screw rod 2; 107-auxiliary motor 2; 108-U-shaped slide; 109-support ring plate; 110-mounting ring plate; 111-clamp; 112-fan-shaped slide; 113-spline shaft; 114-fixed short rod; 115-rotating motor; 116-positioning rotating frame; 117-positioning shaft; 118-friction circular plate 1; 119-positioning motor 1; 120-friction circular plate 2; 121-positioning motor 2; 122-positioning rack; 123-unlocking strip plate; 124-driving pulley; 125-adjusting gear; 126-transmission pulley; 127-transmission belt; 128-unlocking rack; 129-strip slide; 130-T-shaped slide; 131-limiting rod; 132-separation rack; 133-unlocking gear; 134-cam; 135-linkage belt; 136-transmission gear; 137-separation wheel; 138-friction strip; 139-fan-shaped strip; 140-limiting circular plate one; 141-limiting slide one; 142-limiting circular plate two; 143-limiting slide two; 144-linkage shaft; 145-limiting motor; 146-double-headed threaded screw one; 147-double-headed threaded screw two; 148-double-headed threaded screw three. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Example: Reference Figure 1-Figure 13A multi-degree-of-freedom adjustment platform for a CT scanner comprises a circular base plate 101, a positioning assembly is arranged on the circular base plate 101, the positioning assembly comprises a U-shaped slide plate 108 and a supporting ring plate 109, a square slide plate 102 is slidably mounted on the circular base plate 101, an auxiliary screw rod 103 is rotatably mounted on the circular base plate 101, an auxiliary motor 104 is fixedly mounted on the circular base plate 101, an output shaft of the auxiliary motor 104 is fixedly connected to the auxiliary screw rod 103, the auxiliary screw rod 103 and the square slide plate 102 form a spiral pair, a U-shaped slide plate 108 is slidably mounted on the square slide plate 102, an auxiliary screw rod 2 106 is rotatably mounted on the square slide plate 102, an auxiliary motor 2 107 is fixedly mounted on the square slide plate 102, the output shaft of the auxiliary motor 2 107 is fixedly connected to the auxiliary screw rod 2 106, and the auxiliary screw rod 2 106 and the U-shaped slide plate 108 form a spiral pair.

[0031] Start the auxiliary motor 104 to drive the auxiliary screw rod 103 to rotate, so that the square slide 102 moves along the axis of the auxiliary screw rod 103. Start the auxiliary motor 2 107 to drive the auxiliary screw rod 2 106 to rotate, so that the U-shaped slide 108 moves along the axis of the auxiliary screw rod 2 106. The axes of the auxiliary screw rod 103 and the auxiliary motor 2 107 are perpendicular to each other, that is, the moving directions of the square slide 102 and the U-shaped slide 108 are perpendicular.

[0032] A positioning rotating frame 116 and a positioning shaft 117 are rotatably mounted on the U-shaped slide 108, and the positioning rotating frame 116 and the positioning shaft 117 are rotatably connected. The center line of the rotational connection between the U-shaped slide 108 and the positioning rotating frame 116 is in the same straight line as the center line of the rotational connection between the U-shaped slide 108 and the positioning shaft 117. A positioning motor 119 and a positioning motor 2 121 are fixedly mounted on the U-shaped slide 108, and the positioning motor 119 and the positioning motor 2 121 are symmetrically arranged, the output shaft of the positioning motor 119 is fixedly connected to the positioning rotating frame 116, the output shaft of the positioning motor 2 121 is fixedly connected to the positioning shaft 117, and the axes of the positioning motor 119 and the positioning motor 2 121 are in the same straight line.

[0033] The positioning rack 116 is symmetrically and slidably installed with positioning racks 122, and the positioning shaft 117 is used to adjust the positions of the two positioning racks 122. The support ring plate 109 is fixedly connected to the positioning rack 122. The support ring plate 109 is movably provided with a mounting ring plate 110, and a clamp 111 is rotatably installed on the mounting ring plate 110. A self-locking unit is provided between the support ring plate 109 and the mounting ring plate 110. A spline shaft 113 is fixedly installed on the clamp 111, and the axes of the clamp 111 and the spline shaft 113 are in the same straight line. A rotating motor 115 is fixedly installed on the support ring plate 109, and the output shaft of the rotating motor 115 forms a spline sliding fit when engaged with the spline shaft 113. When the support ring plate 109 and the mounting ring plate 110 are engaged, the axes of the support ring plate 109 and the mounting ring plate 110 are in the same straight line, and at this time, the spline shaft 113 is engaged with the output shaft of the rotating motor 115.

[0034] A positioning gear 125 is symmetrically mounted on the positioning rotating frame 116 for rotation. The positioning gear 125 meshes with the corresponding positioning rack 122 to form a gear rack pair. A driving pulley 124 is fixedly mounted on the positioning shaft 117. A transmission group 1 is arranged between the driving pulley 124 and the two positioning gears 125. The transmission group 1 includes a transmission belt 127, two transmission pulleys 126, and two transmission gears 136. One of the two transmission gears 136 is rotatably mounted on the positioning rotating frame 116, and the other transmission gear 136 is fixedly mounted on the side of the corresponding positioning gear 125. The two transmission gears 136 mesh with each other to form a gear pair. One of the two transmission pulleys 126 is fixedly mounted on the transmission gear 136 rotatably mounted on the positioning rotating frame 116, and the other transmission pulley 126 is fixedly mounted on the positioning gear 125 on which the transmission gear 136 is not installed. The transmission belt 127 is arranged between the driving pulley 124 and the two transmission pulleys 126.

[0035] Start the second positioning motor 121 to drive the positioning shaft 117 to rotate, and the driving pulley 124 rotates synchronously. Under the action of the transmission belt 127, the two transmission pulleys 126 rotate synchronously, so that the positioning gear 125 and the transmission gear 136 corresponding to the transmission pulley 126 rotate synchronously. Under the action of the two transmission gears 136, the two positioning gears 125 rotate synchronously, and the rotation directions of the two positioning gears 125 are opposite, so that the two positioning racks 122 move synchronously, and the moving directions of the two positioning racks 122 are the same, that is, the position of the support ring plate 109 is adjusted.

[0036] The self-locking unit includes a strip slide 129 symmetrically slidably mounted on the support ring plate 109, a spring sheet is symmetrically arranged between the strip slide 129 and the support ring plate 109, and a limit block is symmetrically arranged on the support ring plate 109, and the limit block is used to limit the position of the corresponding strip slide 129, and four fixed short rods 114 are fixedly arranged in a circular array on the mounting ring plate 110, and the fixed short rods 114 are all slidably matched with the support ring plate 109, and the fixed short rods 114 are all provided with sliding grooves that match the ends of the strip slide 129, and when the two ends of the strip slide 129 are respectively engaged with the fixed short rods 114, the support ring plate 109 and the mounting ring plate 110 are in a fixed state.

[0037] In the initial position, that is, the mounting ring plate 110 and the supporting ring plate 109 are in engagement, at this time, the fixed short rods 114 are in engagement with the supporting ring plate 109, the spring sheet between the strip slide 129 and the supporting ring plate 109 is not compressed, the strip slide 129 is in contact with the corresponding limit block, and the two strip slides 129 are located at the farthest position. At this time, the two sides of the strip slide 129 are respectively in engagement with the corresponding sliding grooves on the fixed short rods 114. Under the action of the strip slide 129 and the fixed short rods 114, the mounting ring plate 110 cannot move relative to the supporting ring plate 109.

[0038] A T-shaped slide plate 130 is symmetrically slidably installed on the support ring plate 109, and a spring is symmetrically arranged between the T-shaped slide plate 130 and the support ring plate 109. A limit rod 131 is symmetrically fixedly arranged on the T-shaped slide plate 130, and the limit rod 131 slides in cooperation with the corresponding strip slide plate 129, and the limit rod 131 is used to limit the position of the strip slide plate 129. A cam 134 is symmetrically rotatably installed on the support ring plate 109, and a torsion spring is arranged between the cam 134 and the support ring plate 109, one end of the torsion spring is fixedly connected to the support ring plate 109, and the other end of the torsion spring is fixedly connected to the cam 134, and the cam 134 is used to push the corresponding T-shaped slide plate 130 to move.

[0039] In the initial position, the torsion spring between the cam 134 and the support ring plate 109 is still, and the spring between the T-shaped slide plate 130 and the support ring plate 109 is not compressed. At this time, the protruding portion of the cam 134 does not contact the T-shaped slide plate 130, and the T-shaped slide plate 130 is located at the position closest to the axis of the cam 134, that is, the T-shaped slide plate 130 is located at the position closest to the mounting ring plate 110. At this time, the limit rod 131 and the strip slide plate 129 are both in an engaged state. Under the action of the limit rod 131, the strip slide plate 129 cannot move relative to the support ring plate 109.

[0040] The driving cam 134 rotates, and the protrusion on the cam 134 contacts the T-shaped slide 130. Under the action of the cam 134, the T-shaped slide 130 moves away from the axis of the cam 134, and the limit rod 131 moves synchronously. The limit rod 131 moves away from the strip slide 129, and finally the limit rod 131 disengages from the strip slide 129, that is, the limit rod 131 releases the restriction on the position of the strip slide 129, and the strip slide 129 can move relative to the support ring plate 109.

[0041] A separation wheel 137 is fixedly mounted on the side of the cam 134 , and teeth are evenly arranged on half of the circumference of the separation wheel 137 . A separation rack 132 is fixedly mounted on the strip slide 129 , and when the teeth on the separation wheel 137 are engaged with the separation rack 132 , a gear rack pair is formed.

[0042] In the initial position, the teeth on the separation wheel 137 do not contact the separation rack 132, driving the cam 134 to rotate, and the separation wheel 137 rotates synchronously. The cam 134 pushes the T-shaped slide 130 to move in the direction away from the axis of the cam 134, and finally the T-shaped slide 130 moves to the position farthest from the mounting ring plate 110, and the limit rod 131 releases the restriction on the position of the strip slide 129. At this time, the teeth on the separation wheel 137 contact the separation rack 132, and the cam 134 continues to rotate, and the position of the T-shaped slide 130 remains unchanged. Under the action of the separation wheel 137, the separation rack 132 moves in the direction close to the axis of the support ring plate 109, that is, the two separation racks 132 move in the direction close to each other, and then the two strip slides 129 move in the direction close to each other, and finally the strip slide 129 is out of contact with the fixed short rod 114, that is, the strip slide 129 releases the restriction on the position of the fixed short rod 114.

[0043] An unlocking strip plate 123 is fixedly installed on the positioning rotating frame 116, and an unlocking rack 128 is symmetrically fixed on the unlocking strip plate 123. An unlocking gear 133 is symmetrically rotatably installed on the supporting ring plate 109. When the unlocking rack 128 is engaged with the corresponding unlocking gear 133, a gear rack pair is formed. A transmission group 2 is arranged between the unlocking gear 133 and the corresponding cam 134. The transmission group 2 includes a linkage belt 135 and two linkage pulleys 105. The two linkage pulleys 105 in the same transmission group 2 are respectively fixedly mounted on the cam 134 and the corresponding unlocking gear 133, and the linkage belt 135 is arranged on the two linkage pulleys 105 in the same transmission group 2.

[0044] When the ring plate 110 needs to be disassembled and installed, the positioning motor 121 is started to make the support ring plate 109 continue to move downward, so that the two unlocking gears 133 continue to move downward, and the unlocking gears 133 respectively contact with the corresponding unlocking racks 128, that is, the unlocking gears 133 rotate, and under the action of the linkage pulley 105 and the linkage belt 135, the two cams 134 rotate, and the separation wheel 137 rotates synchronously, and under the action of the cam 134 and the separation wheel 137, the limit rod 131 first releases the restriction on the position of the strip slide 129, and then the strip slide 129 moves, and finally the strip slide 129 is separated from the contact with the fixed short rod 114.

[0045] A limiting assembly is also provided on the circular bottom plate 101, and the limiting assembly includes two friction strips 138, two limiting circular plates 140, and two limiting circular plates 142. The friction strips 138 are used to limit the position of the adjustment rack 122, the limiting circular plate 140 is used to limit the position of the adjustment rotating frame 116, and the limiting circular plate 142 is used to limit the position of the adjustment shaft 117.

[0046] Two fan-shaped slides 112 are slidably mounted on the U-shaped slide 108, and fan-shaped strips 139 are symmetrically slidably mounted on the adjustment rotating frame 116. The fan-shaped strips 139 are rotatably connected to the corresponding fan-shaped slides 112. The friction strips 138 are fixedly mounted on the corresponding fan-shaped strips 139. When the friction strips 138 and the side surfaces of the adjustment rack 122 are in contact, there is friction between the two. A friction circular plate 118 is fixedly mounted on the adjustment rotating frame 116, and two limiting circular plates 140 are arranged on both sides of the friction circular plate 118. When the friction circular plate 118 and the limiting circular plate 140 are in contact, there is friction between the two. The limiting circular plate 1 140 is used to limit the rotation of the friction circular plate 118, a friction circular plate 120 is fixedly arranged on the positioning shaft 117, two limiting circular plates 142 are arranged on both sides of the friction circular plate 120, and there is friction between the limiting circular plate 142 and the friction circular plate 120 when they are in contact. The limiting circular plate 142 is used to limit the rotation of the friction circular plate 120, and two limiting sliding plates 141 and two limiting sliding plates 143 are also slidably installed on the U-shaped sliding plate 108. The friction circular plate 118 is fixedly installed on the corresponding limiting sliding plate 141, and the limiting circular plate 142 is fixedly installed on the corresponding limiting sliding plate 143.

[0047] A linkage shaft 144 is rotatably mounted on the U-shaped slide 108, a limit motor 145 is fixedly mounted on the U-shaped slide 108, an output shaft of the limit motor 145 is fixedly connected to the linkage shaft 144, a double-headed threaded screw 1 146, a double-headed threaded screw 2 147, and a double-headed threaded screw 3 148 are fixedly mounted on the linkage shaft 144, the threads at both ends of the double-headed threaded screw 1 146 respectively form a spiral pair with the corresponding limit slide 1 141, the threads at both ends of the double-headed threaded screw 2 147 respectively form a spiral pair with the corresponding limit slide 2 143, and the threads at both ends of the double-headed threaded screw 3 148 respectively form a spiral pair with the corresponding fan-shaped slide 112.

[0048] In the initial position, the two limit slide plates 143 are located at the farthest position, the two limit slide plates 141 are located at the farthest position, and the two fan-shaped slides 112 are located at the farthest position, that is, the two friction strips 138 are located at the farthest position. At this time, the limit circular plate 140 is not in contact with the friction circular plate 1 118, the limit circular plate 2 142 is not in contact with the friction circular plate 2 120, and the friction strip 138 is not in contact with the adjustment rack 122.

[0049] The distance between the limiting circular plate 142 and the friction circular plate 120, the distance between the limiting circular plate 140 and the friction circular plate 118, and the distance between the friction strip plate 138 and the adjusting rack 122 are all equal, the limiting motor 145 is started to drive the linkage shaft 144 to rotate, and the double-headed threaded screw 146, the double-headed threaded screw 147, and the double-headed threaded screw 3 148 rotate synchronously, that is, the two limiting slide plates 141 move in a direction approaching each other, the two limiting slide plates 143 move in a direction approaching each other, and the two fan-shaped slides 112 move in a direction approaching each other, and the displacements of the limiting slide plates 141, the limiting slide plates 143, and the fan-shaped slides 112 are equal, and finally the two limiting circular plates 140 contact the friction circular plate 11 On both sides of 8, the two friction strips 138 contact the two sides of the positioning rack 122, and the two limiting circular plates 142 contact the two sides of the friction circular plate 120. Under the action of the friction force between the friction strips 138 and the positioning rack 122, the positioning rack 122 cannot move freely, that is, the position between the support ring plate 109 and the positioning rotating frame 116 is locked. Under the action of the friction force between the friction circular plate 118 and the limiting circular plate 140, the positioning rotating frame 116 cannot rotate freely, that is, the locking between the positioning rotating frame 116 and the U-shaped slide plate 108 is achieved. Under the action of the friction force between the friction circular plate 120 and the limiting circular plate 142, the positioning shaft 117 cannot rotate freely, that is, the locking between the positioning shaft 117 and the U-shaped slide plate 108 is achieved.

[0050] Working principle: Select the mounting ring plate 110 with the required fixture 111 according to the part to be tested, then start the positioning motor 119 to drive the positioning rotating frame 116 to rotate, so that the upper surface of the supporting ring plate 109 is in the horizontal plane, and then start the positioning motor 2 121 to drive the supporting ring plate 109 and the positioning rack 122 to move downward synchronously, so that the unlocking gear 133 contacts the corresponding unlocking rack 128, that is, the cam 134 and the separation wheel 137 rotate synchronously. Under the action of the cam 134 and the separation wheel 137, the limiting rod 131 first releases the restriction on the strip slide 129, and then The strip slide 129 is disengaged from the fixed short rod 114, and then the mounting ring plate 110 is removed, and the fixed short rod 114 on the required mounting ring plate 110 is engaged with the support ring plate 109. At this time, the spline shaft 113 is engaged with the output shaft of the rotating motor 115, and then the support ring plate 109 is moved upward, and the strip slide 129 is re-engaged with the slide groove on the fixed short rod 114. The support ring plate 109 continues to move, and the limit rod 131 is re-engaged with the strip slide 129, thereby achieving the fixation between the support ring plate 109 and the mounting ring plate 110, and completing the replacement of the mounting ring plate 110.

[0051] Then the part to be measured is mounted on the fixture 111, and the positioning motor 119 is started to drive the positioning turret 116 to rotate, and the supporting ring plate 109 rotates synchronously, and the fan-shaped strip plate 139 rotates relative to the fan-shaped slide 112, that is, the position of the part is adjusted. When the positioning turret 116 rotates, the positioning shaft 117 rotates synchronously to prevent the positioning turret 116 from rotating relative to the positioning shaft 117, which causes the position of the positioning rack 122 to change. The positioning motor 2 121 is started to drive the positioning shaft 117 to rotate, and under the action of the transmission group 1, the positions of the two positioning racks 122 are adjusted, and the supporting ring plate 109 moves synchronously, that is, the position of the supporting ring plate 109 is adjusted.

[0052] After completing the adjustment of the positioning rotating frame 116 and the positioning shaft 117, start the linkage shaft 144 driven by the limiting motor 145 to rotate, so that the two limiting circular plates 140 are in contact with the friction circular plate 118, the two friction strips 138 are engaged with the positioning rack 122, and the two limiting circular plates 142 are in contact with the friction circular plate 120. Under the action of the friction circular plate 118 and the limiting circular plate 140, the position of the positioning rotating frame 116 is locked. Under the action of the friction strips 138 and the positioning rack 122, the position of the support ring plate 109 is locked. Under the action of the friction circular plate 120 and the limiting circular plate 142, the position of the positioning shaft 117 is locked, that is, the support ring plate 109 is locked again, thereby preventing the position of the support ring plate 109 from shifting.

[0053] Then, the auxiliary screw rod 103 and the auxiliary motor 2 107 are started to adjust the position of the U-shaped slide plate 108, and the rotating motor 115 is started. Under the action of the spline shaft 113, the clamp 111 rotates, that is, the part rotates, so that the part can be adjusted to the required position for detection.

[0054] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A multi-degree-of-freedom adjustment platform for a CT scanner, comprising a circular bottom plate (101), characterized in that: The circular bottom plate (101) is provided with a positioning assembly, which comprises a U-shaped slide plate (108) and a supporting ring plate (109); a positioning rotating frame (116) and a positioning shaft (117) are rotatably mounted on the U-shaped slide plate (108); positioning racks (122) are symmetrically slidably mounted on the positioning rotating frame (116); the positioning shaft (117) is used to adjust the positions of the two positioning racks (122); the supporting ring plates (109) are fixedly connected to the positioning racks (122); a mounting ring plate (110) is movably mounted on the supporting ring plate (109); a clamp (111) is rotatably mounted on the mounting ring plate (110); and a self-locking unit is provided between the supporting ring plate (109) and the mounting ring plate (110); A limiting assembly is also provided on the circular bottom plate (101), the limiting assembly comprising two friction strips (138), two limiting circular plates (140), and two limiting circular plates (142). The friction strips (138) are used to limit the position of the adjustment rack (122), the limiting circular plate (140) is used to limit the position of the adjustment rotating frame (116), and the limiting circular plate (142) is used to limit the position of the adjustment shaft (117).

2. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 1, characterized in that: A square slide plate (102) is slidably mounted on the circular bottom plate (101), the U-shaped slide plate (108) is slidably mounted on the square slide plate (102), a spline shaft (113) is fixedly mounted on the fixture (111), the axes of the fixture (111) and the spline shaft (113) are on the same straight line, and a rotating motor (115) is fixedly mounted on the support ring plate (109), and a spline sliding fit is formed when the output shaft of the rotating motor (115) is engaged with the spline shaft (113).

3. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 2, characterized in that: The positioning rotating frame (116) and the positioning shaft (117) are rotatably connected. The positioning rotating frame (116) is symmetrically rotatably mounted with positioning gears (125). The positioning gears (125) are meshed with corresponding positioning racks (122) to form a gear rack pair. A driving pulley (124) is fixedly mounted on the positioning shaft (117). A transmission group 1 is arranged between the driving pulley (124) and the two positioning gears (125).

4. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 3, characterized in that: The self-locking unit comprises a strip slide plate (129) symmetrically slidably mounted on a supporting ring plate (109); four fixed short rods (114) are fixedly arranged in a circumferential array on the mounting ring plate (110); the fixed short rods (114) are all slidably matched with the supporting ring plate (109); the fixed short rods (114) are all provided with a sliding groove matched with the end of the strip slide plate (129); when the two ends of the strip slide plate (129) are respectively engaged with the fixed short rods (114), the supporting ring plate (109) and the mounting ring plate (110) are in a fixed state.

5. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 4, characterized in that: A T-shaped slide plate (130) is also symmetrically slidably mounted on the support ring plate (109); a limit rod (131) is symmetrically fixedly arranged on the T-shaped slide plate (130); the limit rod (131) is slidably matched with the corresponding strip slide plate (129); the limit rod (131) is used to limit the position of the strip slide plate (129); and a cam (134) is also symmetrically rotatably mounted on the support ring plate (109); the cam (134) is used to push the corresponding T-shaped slide plate (130) to move.

6. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 5, characterized in that: A separation wheel (137) is fixedly mounted on the side of the cam (134), and teeth are evenly arranged on half of the circumference of the separation wheel (137). A separation rack (132) is fixedly mounted on the strip-shaped slide plate (129), and when the teeth on the separation wheel (137) are engaged with the separation rack (132), a gear rack pair is formed.

7. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 6, characterized in that: An unlocking strip plate (123) is fixedly mounted on the positioning rotating frame (116), an unlocking rack (128) is symmetrically fixedly mounted on the unlocking strip plate (123), an unlocking gear (133) is symmetrically rotatably mounted on the supporting ring plate (109), and a gear rack pair is formed when the unlocking rack (128) is engaged with the corresponding unlocking gear (133), a transmission group 2 is arranged between the unlocking gear (133) and the corresponding cam (134), and a torsion spring is arranged between the cam (134) and the supporting ring plate (109).

8. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 7, characterized in that: Two fan-shaped slides (112) are slidably mounted on the U-shaped slide (108), fan-shaped strips (139) are symmetrically slidably mounted on the position adjustment rotating frame (116), the fan-shaped strips (139) are rotatably connected to the corresponding fan-shaped slides (112), the friction strips (138) are fixedly mounted on the corresponding fan-shaped strips (139), a friction circular plate (118) is fixedly mounted on the position adjustment rotating frame (116), and two limiting circular plates (140) are arranged on the friction circular plate (118). ), a friction circular plate 2 (120) is fixedly arranged on the positioning shaft (117), two limiting circular plates 2 (142) are arranged on both sides of the friction circular plate 2 (120), and two limiting circular plates 1 (141) and two limiting circular plates 2 (143) are also slidably mounted on the U-shaped slide plate (108), the friction circular plate 1 (118) is fixedly mounted on the corresponding limiting circular plate 1 (141), and the limiting circular plate 2 (142) is fixedly mounted on the corresponding limiting circular plate 2 (143).

9. The multi-degree-of-freedom adjustment platform of a CT scanner according to claim 8, characterized in that: A linkage shaft (144) is rotatably mounted on the U-shaped slide plate (108); a double-threaded screw rod 1 (146), a double-threaded screw rod 2 (147), and a double-threaded screw rod 3 (148) are fixedly mounted on the linkage shaft (144); the threads at both ends of the double-threaded screw rod 1 (146) respectively form a spiral pair with the corresponding limit slide plate 1 (141); the threads at both ends of the double-threaded screw rod 2 (147) respectively form a spiral pair with the corresponding limit slide plate 2 (143); and the threads at both ends of the double-threaded screw rod 3 (148) respectively form a spiral pair with the corresponding fan-shaped slide frame (112).

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