A multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment

Abstract

The present invention provides a multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment, which is composed of a mounting tube, a water-cooled target plate seat, an angle adjustment mechanism, a horizontal adjustment mechanism, a vertical adjustment mechanism, and a support frame. By placing the driving mechanism at the rear, away from the magnetic field action range of the magnet, the stable operation of the motor in the strong magnetic field environment is achieved; the angle adjustment of the test target plate is achieved through the power transmission of the motor-transmission shaft-worm gear mechanism; and the position adjustment of the test target plate in the horizontal and vertical directions is achieved through two sets of motor-ball screw-crank arm transmission mechanisms. The whole device has a compact structure, a high system integration, independent adjustment mechanisms, and stable and reliable operation.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, and in particular to a multi-degree-of-freedom adjustment mechanism used in strong magnetic fields and vacuum environments. Background Art

[0002] The plasma-facing components in the fusion device need to withstand the particle flow and heat flow from the central plasma. The operating environment of the core components facing the plasma, such as the divertor and blanket, is extremely harsh. When studying the interaction process and mechanism between plasma and materials under future fusion conditions, it is necessary to conduct performance tests on the divertor and blanket materials under simulated fusion conditions. During the test, the plasma beam bombards the test target in a vacuum environment to meet the predetermined requirements. The magnets in the test device generate a strong magnetic field to constrain the plasma beam. After the plasma beam is constrained and shaped by the magnetic field and the limiter, the energy is concentrated on a smaller point. In order to achieve the impact effect on the target test surface, the position of the test target needs to be adjusted. At the same time, in order to obtain the comparative impact effects of multiple different materials in the same test, it is necessary to replace the test target without stopping the test. Summary of the invention

[0003] The present invention provides a multi-degree-of-freedom adjustment mechanism for strong magnetic fields and vacuum environments. Through three sets of driving mechanisms, the switching of target materials in the test and the adjustment of positions in the horizontal, lateral and vertical directions can be realized. Through a three-layer nested long support structure, electrical components such as motors of the driving mechanism are kept away from the influence of the strong magnetic field, ensuring that high heat load tests of a variety of different target materials in a strong magnetic field environment are carried out smoothly, so as to provide an adjustable target plate device suitable for high heat load tests in a strong magnetic field environment.

[0004] The present invention is achieved through the following technical solutions:

[0005] A multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment comprises a mounting tube, a water-cooled target plate seat, an angle adjustment mechanism, a horizontal adjustment mechanism, a vertical adjustment mechanism, and a support frame. The water-cooled target plate seat is mounted on the angle adjustment mechanism and is located at the front end of the entire mechanism. The angle adjustment mechanism, the vertical adjustment mechanism, the horizontal adjustment mechanism and the mounting tube are a layer-by-layer nested installation structure, the angle adjustment mechanism is mounted in the vertical adjustment mechanism, the vertical adjustment mechanism is mounted in the horizontal adjustment mechanism, and the horizontal adjustment mechanism is mounted in the mounting tube through the support frame.

[0006] Furthermore, the installation cylinder mainly includes a long cylinder and a heat shield. The main structure of the long cylinder is a stainless steel cylinder, with a mounting flange welded at one end, two rails installed inside, and a stepped circular surface processed at the other end. The front end of the heat shield is a conical cylinder, and the rear end is a straight cylinder. The material is stainless steel. The inner wall of one end of the straight cylinder is processed with a stepped circular surface, which is sleeved on the stepped circular surface of the long cylinder and fixed by bolts.

[0007] Furthermore, the water-cooled target plate seat mainly includes a water-cooling chamber, a bracket, a fixing plate, bolts, water pipe 1, and water pipe 2. The water-cooling chamber is a hollow box structure with a total of 5 mounting surfaces, and the angle of the mounting surfaces is 135°. The center of the bracket is a hollow axis, and the upper and lower frames are welded to the water-cooling chamber. The fixing plate is a perforated circular plate, and the number is 5, which are respectively installed on the 5 mounting surfaces of the water-cooling chamber. Water pipe 1 and water pipe 2 are metal hoses, which are respectively welded on both sides of the water-cooling chamber. Water pipe 1 is a water inlet pipe, and water pipe 2 is a water outlet pipe.

[0008] Furthermore, the angle adjustment mechanism mainly includes a bracket 1, a bearing seat 1, a bearing 1, a worm, a worm wheel, a bearing 2, a shaft 1, a coupling 1, a shaft 2, a universal joint 1, a shaft 3, a shaft 4, a hollow shaft 1, a shaft 5, a coupling 2, a reducer 1, and a vacuum motor 1. The two ends of the worm are installed in the bearing seat 1 through a bearing 1, the bearing seat 1 is installed on the bracket 1, the worm wheel is installed concentrically with the shaft, the two ends of the shaft 1 are installed with bearings 2 and installed on the bracket 1, and the worm wheel is installed in coordination with the worm. One end of the worm is connected to the shaft 2 through a coupling 1, the shaft 2 is connected to the shaft 3 through a universal joint 1, the shaft 3 is connected to the shaft 4 through a universal joint 1, the two ends of the hollow shaft 1 are respectively connected to the shaft 4 and the shaft 5, the shaft 5 is connected to the reducer 1 through a coupling 2, and the reducer 1 is installed in coordination with the vacuum motor 1.

[0009] Furthermore, the vertical adjustment mechanism mainly includes a front bracket, a center tube, a support plate 1, a roller 1, an ear plate 1, a crank arm 1, a pin 1, a screw rod 1, a hollow shaft 2, a screw rod 2, a ball sleeve 1, a ball sleeve 2, a connector 1, a coupling 3, a reducer 2, a vacuum motor 2, and a mounting plate 1. The front bracket is a frame structure, and the front part is a perforated flat plate for mounting a water-cooled target plate seat, which is welded to the center tube. The center tube is a stainless steel cylinder. There are two groups of support plates 1, which are welded and mounted on the front and rear ends of the center tube, respectively. Each support plate 1 has four mounting holes for mounting roller 1. Roller 1 is mounted on support plate 1. Ear plate 1 is welded on support plate 1 at the front and rear ends of the lower part of the center tube, and is used to mount crank arm 1. Screw rod 1 and screw rod 2 are connected by hollow shaft 2, and the thread direction of screw rod 1 is opposite to that of screw rod 2. Two groups of crank arms 1 are respectively connected to ear plate 1 and connector 1 at the front end of the center tube and ear plate 1 and connector 2 at the rear end of the center tube by pin 1. The end of the screw rod 2 is connected to the rotating shaft of the reducer 2 through the coupling 3, and the reducer 2 is coaxially installed with the vacuum motor 2. A mounting plate 1 is welded at the opening at the end of the center tube for mounting the reducer 1.

[0010] Furthermore, the horizontal adjustment mechanism mainly includes an elliptical center tube, a front mounting plate, a rear mounting plate, a mounting seat 1, a track 1, a support plate 2, a support plate 3, a roller 2, an ear plate 2, a crank arm 2, a pin 2, a screw rod 3, a hollow shaft 2, a screw rod 4, a ball sleeve 3, a ball sleeve 4, a connector 2, a universal joint 2, a shaft 6, a shaft 7, a bearing 3, a bearing seat 2, a coupling 4, a reducer 3, and a vacuum motor 3. The elliptical center tube is a stainless steel long tube with an elliptical cross section, and holes are opened on the side as needed, and a reinforcing rib plate is welded inside. The front mounting plate and the rear mounting plate are respectively welded to the front and rear ends of the elliptical center tube. Holes are respectively opened on the front mounting plate and the rear mounting plate for installing the track 1. There are 4 tracks in total, which are symmetrically installed on the front mounting plate and the rear mounting plate. There are two groups of support plates 2, which are welded to the outer cylinder wall at the upper part of the elliptical center tube, and holes are opened to install two rollers 2. There are two groups of support plates 3, which are welded on the inner wall of the elliptical center tube, and holes are opened to install two rollers 2. There are four ear plates 2, which are divided into two groups and welded on the inner wall of the side of the elliptical center tube. Connector 2 is fixedly installed with ball sleeve 3 and ball sleeve 4 respectively, ball sleeve 3 is installed in conjunction with screw rod 3, ball sleeve 4 is installed in conjunction with screw rod 4, screw rod 3 and screw rod 4 are connected through hollow shaft 2, and the spiral directions of screw rod 3 and screw rod 4 are opposite. Two groups of crank arms 2 are respectively connected with ear plate 2 and connector 2 at the front end of the elliptical center tube and ear plate 2 and connector 2 at the rear end of the elliptical center tube through pin 2. Bearing 3 is installed at the single-side end of screw rod 3 and screw rod 4, and bearing 3 is installed in bearing seat 1. The end of screw rod 3 is connected to shaft 7 through universal joint 2, shaft 7 is connected to shaft 6 through universal joint 2, shaft 6 is connected to reducer 3 through coupling 4, and reducer 3 is installed coaxially with vacuum motor 3. Mounting seat 2 is welded at the tail end of the elliptical center tube for installing reducer 2.

[0011] Furthermore, the support frame is composed of a front mounting ring, a rear mounting ring, an intermediate support ring one, and an intermediate support ring two, which are assembled into one by two sets of locking rods one and one set of locking rods two, and together provide support for the angle adjustment mechanism, the horizontal adjustment mechanism and the vertical adjustment mechanism.

[0012] The front mounting ring mainly includes a slotted annular shell 1, a reinforcing plate 1, a reinforcing plate 2, a connecting plate 1, a reinforcing rib 1, a roller 3, a bearing 4, a bearing seat 3, a bearing seat sealing plate 1, and a track 2. The slotted annular shell 1 is a stainless steel cylindrical structure, and two grooves with an angle of 100° are opened along the axis of the outer wall. The reinforcing plate 1 and the reinforcing plate 2 are respectively welded at positions close to the front and rear ends of the slotted annular shell. There are two groups of connecting plates 1, which are respectively welded to the slotted annular shell 1 and the reinforcing plates 1 and 2, and the installation direction is parallel to the groove on the slotted annular shell 1. Two groups of holes are opened on the connecting plate 1. There are four reinforcing ribs in total, which are welded to the inner wall of the slotted annular shell and the connecting plate in two groups. There are four groups of rollers 3, which are installed on the connecting plate 1. The bearing seat 3 is welded to the front end of the slotted annular shell 1. The bearing 4 is installed in the bearing seat 3. The bearing seat sealing plate 1 is installed on the bearing seat 3 and fixed with bolts. There are two groups of tracks 2, which are installed on the inner side of the reinforcing plate 1 from top to bottom.

[0013] The rear mounting ring mainly includes a slotted annular housing 2, a reinforcing plate 3, a reinforcing plate 4, a reinforcing plate 5, a bearing 4, a bearing seat 4, a mounting plate 2, a connecting plate 2, a reinforcing rib 2, a roller 3, a track 2, and a mounting seat 2. The slotted annular housing 2 is a stainless steel annular structure, and two grooves with an angle of 100° are opened along the axis of the outer wall. The reinforcing plates 3, 4 and 5 are respectively welded to the front, middle and rear parts of the inner wall of the slotted annular housing 2. The bearing seat 4 is welded on the reinforcing plate 4. The bearing 4 is installed in the bearing seat 4. The connecting plate 2 is welded to the inner wall of the slotted annular housing 2, connecting the reinforcing plate 3 and the reinforcing plate 4. The mounting plate 2 has two groups, which are symmetrically welded to the inner wall of the slotted annular housing 2, located in the area between the reinforcing plate 4 and the reinforcing plate 5. The mounting plate 2 has a hole. There are four rollers 3 in total, which are respectively mounted on the mounting plate 2 in two groups. There are two groups of reinforcing ribs 2 in total, which are symmetrically welded to the inner wall of the slotted annular housing 2 and the mounting plate 2. There are two rails in total, which are installed up and down on the reinforcing plate five close to the center side of the slotted annular shell.

[0014] The intermediate support ring 1 mainly includes a slotted ring 1, a reinforcing plate 6, a bearing 4, a bearing seat 5, a mounting plate 3, and a roller 3. The slotted ring 1 is a stainless steel ring, and two grooves with an angle of 100° are opened on the outer wall along the axis. The reinforcing plate 6 is welded to the axial center position of the slotted ring 1. The bearing seat 5 is welded to the side of the reinforcing plate 6 close to the rear mounting ring. The bearing 4 is installed in the bearing seat 5. There are two mounting plates 3, which are symmetrically welded to the inner side of the reinforcing plate 6 and the slotted ring 1. A hole is opened on the mounting plate 3. There are two rollers 3, which are respectively installed on two mounting plates 3.

[0015] The intermediate support ring 2 mainly includes a slotted ring 2, a reinforcing plate 7, a bearing 4, a bearing seat 5, a mounting plate 4, and a roller 3. The slotted ring 2 is a stainless steel ring, and two grooves with an angle of 100° are opened on the outer wall along the axis. The reinforcing plate 7 is welded to the axial center of the slotted ring 2. The bearing seat 5 is welded to the side of the reinforcing plate 7 close to the front mounting ring. The bearing 4 is installed in the bearing seat 5. There are two mounting plates 4, which are symmetrically welded to the inner side of the reinforcing plate 7 and the slotted ring 2. A hole is opened on the mounting plate 4. There are two rollers 3, which are respectively installed on two mounting plates 4.

[0016] The locking rod 1 mainly includes a rod 1, a sleeve 1, and a locking nut 1. The rod 1 is a slender straight screw. The sleeve 1 is a stainless steel cylinder. There are 16 sleeves in total, which are divided into 8 groups and installed concentrically with the rod. The locking nut is assembled with the rod thread.

[0017] The locking rod 2 mainly includes a rod 2, a double-column clamping sleeve 1, and a locking nut 2. The rod 2 is a thick and long straight screw. The main body of the double-column clamping sleeve 1 is a diamond-shaped central perforated plate, and two sections of cylindrical clamping rods are welded on one side, a total of 16. The double-column clamping sleeve is installed concentrically with the rod 2 through the center hole, and the locking nut 2 is assembled with the thread of the rod 2.

[0018] Furthermore, the multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment can realize stable operation of the motor in a strong magnetic field environment by placing the driving mechanism at the rear, away from the magnetic field action range of the magnet. The angle adjustment of the test target plate is realized by the power transmission of the motor-transmission shaft-worm gear mechanism. The position adjustment of the test target plate in the horizontal, lateral and vertical directions is realized by two sets of motor-ball screw-crank arm transmission mechanisms.

[0019] The advantages of the present invention are: a multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment, through three sets of driving mechanisms, can realize the switching of target materials in the test, and the adjustment of the position in the horizontal, lateral and vertical directions. Through the three-layer nested long support structure, the motor and other electrical components of the driving mechanism are kept away from the influence of the strong magnetic field, ensuring that the high heat load test of various different target materials in the strong magnetic field environment is carried out smoothly. The whole device has a compact structure, high system integration, independent adjustment mechanisms, and stable and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , Figure 2 It is a structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the supporting frame structure;

[0022] Figure 4 This is a schematic diagram of the installation tube structure;

[0023] Figure 5Schematic diagram of the angle adjustment mechanism structure;

[0024] Figure 6 It is a schematic diagram of the vertical adjustment mechanism structure;

[0025] Figure 7 It is a schematic diagram of the structure of the horizontal adjustment mechanism;

[0026] Figure 8 It is a schematic diagram of the structure of the water-cooled target plate seat;

[0027] Fig. 9 This is a schematic diagram of the front mounting ring structure;

[0028] Fig.10 It is a schematic diagram of the rear installation ring structure;

[0029] Fig.11 It is a structural schematic diagram of the middle support ring;

[0030] Fig.12 It is a schematic diagram of the structure of the middle support ring 2;

[0031] Fig.13 It is a structural schematic diagram of a locking rod;

[0032] Fig.14 It is a schematic diagram of the structure of the locking rod 2;

[0033] Fig.15 It is the schematic diagram of the horizontal and vertical adjustment mechanism.

[0034] Description of the accompanying figures: 1 mounting cylinder, 2 angle adjustment mechanism, 3 water-cooled target plate seat, 4 vertical adjustment mechanism, 5 horizontal adjustment mechanism, 6 support frame, 7 front mounting ring, 8 middle support ring one, 9 middle support ring two, 10 rear support ring, 11 locking rod one, 12 locking rod two, 13 heat shield, 14 long cylinder, 15 bracket one, 16 shaft four, 17 hollow shaft one, 18 shaft five, 19 coupling two, 20 reducer one, 21 vacuum motor one, 22 bearing seat one, 23 worm, 24 bearing one, 25 coupling one, 26 shaft two, 27 universal joint one, 28 shaft three , 29 bearing two, 30 worm gear, 31 shaft one, 32 front mounting frame, 33 center tube, 34 support plate one, 35 roller one, 36 crank arm one, 37 pin one, 38 screw rod one, 39 hollow shaft two, 40 ball sleeve one, 41 connector one, 42 screw rod two, 43 ball sleeve two, 44 ​​ear plate one, 45 coupling three, 46 reducer two, 47 vacuum motor two, 48 mounting plate one, 49 mounting seat one, 50 track one, 51 rear mounting plate, 52 elliptical center tube, 53 support plate two, 54 roller two, 55 shaft six, 56 coupling four, 57 reducer three, 58 vacuum motor 3, 59 universal joint 2, 60 shaft 7, 61 crank arm 2, 62 pin 2, 63 connector 2, 64 ball bushing 3, 65 screw rod 3, 66 hollow shaft 2, 67 bearing seat 1, 68 bearing 3, 69 support plate 3, 70 front mounting plate connector 3, 71 screw rod 4, 72 ear plate 2, 73 ball bushing 4, 74 water cooling chamber, 75 bracket, 76 water pipe 1, 77 fixing plate, 78 bolt, 79 water pipe 2, 80 slotted annular shell 1, 81 reinforcement plate 1, 82 track 2, 83 reinforcement plate 2, 84 reinforcement rib 1, 85 connecting plate 1, 86 roller 3, 87 bearing seat 2, 8 8 bearing four, 89 bearing seat sealing plate one, 90 slotted annular shell two, 91 reinforcement plate three, 92 reinforcement plate four, 93 reinforcement plate five, 94 connecting plate two, 95 reinforcement rib two, 96 mounting plate two, 97 mounting seat two, 98 bearing seat three, 99 slotted ring one, 100 reinforcement plate six, 101 bearing seat four, 102 mounting plate three, 103 slotted ring two, 104 reinforcement plate seven, 105 mounting plate four, 106 bearing seat five, 107 locking nut one, 108 sleeve one, 109 pull rod one, 110 locking nut two, 111 double column clamping sleeve one, 112 pull rod two. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0036] See attached Figure 1-14A multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment is mainly composed of a mounting tube 1, a water-cooled target plate seat 3, an angle adjustment mechanism 2, a vertical adjustment mechanism 4, a horizontal adjustment mechanism 5 and a support frame 6. The water-cooled target plate seat 3 is installed on the angle adjustment mechanism 2 and is located at the front end of the entire mechanism. The angle adjustment mechanism 2, the vertical adjustment mechanism 4, the horizontal adjustment mechanism 5 and the mounting tube 1 are a layer-by-layer nested installation structure, the angle adjustment mechanism 2 is installed in the vertical adjustment mechanism 4, the vertical adjustment mechanism 4 is installed in the horizontal adjustment mechanism 5, and the horizontal adjustment mechanism 5 is installed in the mounting tube 1 through the support frame 6.

[0037] The installation tube 1 mainly includes an elongated cylinder 14 and a heat shield 13. The elongated cylinder 14 is mainly used to support the adjustment mechanism installed inside, and to push and move the test target material installed on the water-cooled target plate seat 3 between the test area and the diagnostic observation area. Two tracks with an angle of 100° are welded inside the elongated cylinder 14, which are used to move the rollers on the adjustment mechanism when the adjustment mechanism is installed. The heat shield 13 is sleeved on the front end of the elongated cylinder 14 and fixed with bolts. During the test, the plasma strikes the test target material, and the heat generated will be transmitted to each component by radiation. In order to prevent the heat from heating the adjustment mechanism and causing the moving parts to deform and get stuck, the heat shield installed at the front end of the elongated cylinder 14 is used to block the radiant heat. The front end of the heat shield 13 is a conical cylinder, in order to prevent the elongated cylinder 14 from colliding with the support structure of the test area due to the deformation caused by the heavy weight of the front part when the installation tube 1 is pushed to the front end.

[0038] The water-cooled target plate seat 3 is mainly composed of a water-cooling cavity 74, a bracket 75, a fixing plate 77, a bolt 78, a water pipe 1 76, and a water pipe 2 79. The water-cooled target plate seat 3 is mainly used to load different types of test targets for testing. The water-cooling cavity 74 is the main body of the water-cooled target plate seat 3, and has a hollow thin-walled cavity structure with a U-shaped cross-section. A total of 5 groups of test targets can be installed and fixed by a fixing plate 77 and a bolt 78. Water pipe 1 76 and water pipe 2 79 are respectively connected to the two ends of the water-cooling cavity 74 to cool the water-cooling cavity that is heated during the test. The bracket 75 is welded to the water-cooling cavity 74.

[0039] The angle adjustment mechanism 2 is mainly composed of a bracket 15, a bearing seat 22, a bearing 24, a worm 23, a worm wheel 30, a bearing 29, a shaft 31, a coupling 25, a shaft 26, a universal joint 27, a shaft 3 28, a shaft 4 16, a hollow shaft 17, a shaft 5 18, a coupling 29, a reducer 20, and a vacuum motor 21. The angle adjustment mechanism 2 adjusts the angle of the water-cooled target plate seat 3 by means of worm gear transmission. The vacuum motor 21 outputs power, which is amplified by the reducer 20 and transmitted to the front end through the shaft 5 18, the hollow shaft 17, and the shaft 4 16, and then transmitted to the worm 23 through two sets of universal joints 27 and the shaft 3 28, the shaft 2 26 and the coupling 25, and the worm 23 drives the worm wheel 30 and the shaft 1 31 to rotate. The bracket 75 is mounted on the shaft 1 31, and the water-cooled target plate seat 3 rotates with the shaft 1 31, thereby realizing the angle adjustment of the water-cooled target plate seat 3. Bearings 1 24 are mounted on both ends of the worm 23, and the bearings 1 24 are mounted in the bearing seat 1 22, and the bearing seat 1 22 is mounted on the bracket 15. Bearings 29 are mounted on both ends of the shaft 1, and the bearings 29 are mounted on the bracket 15. The disc at the rear end of the bracket 15 is used to block the influence of the radiant heat generated during the test on the rear motion mechanism.

[0040] The vertical adjustment mechanism 4 is mainly composed of a front bracket 32, a center tube 33, a support plate 34, a roller 35, an ear plate 44, a crank arm 36, a pin 37, a screw rod 38, a hollow shaft 39, a screw rod 42, a ball sleeve 40, a ball sleeve 43, a connector 41, a coupling 45, a reducer 46, a vacuum motor 47, and a mounting plate 48. The front bracket 32 ​​is a frame structure, the front part is a perforated flat plate for mounting the bracket 15, and the rear part is a trapezoidal frame welded to the front end of the center tube 33. The center tube 33 is a long stainless steel round tube. There are two support plates 34, each of which is equipped with four rollers 35. The two support plates 34 are respectively welded at a certain distance from the end surface of the two ends of the center tube 33. There are four ear plates 44, which are welded below the welding position of the two support plates 34 and the center tube 33, and the direction is parallel to the center tube 33 and perpendicular to the direction of the support plate 34. The screw rod 38 is connected to the screw rod 42 through the hollow shaft 39, and the spiral direction of the screw rod 38 and the screw rod 42 is opposite. The ball sleeve 40 is installed in conjunction with the screw rod 38, and the ball sleeve 43 is installed in conjunction with the screw rod 42. The ball sleeve 40 is connected to the front ear plate 44 through the connector 41 and the crank arm 36, and the ball sleeve 43 is connected to the rear ear plate 44 through the connector 41 and the crank arm 36. The crank arm 36 is connected to the ear plate 44 and the connector 41 through the pin 37. The reducer 46 is installed on the vacuum motor 47, and the coupling 3 45 connects the screw rod 42 and the reducer 46. In this mechanism, the motion system composed of the center tube 33, the crank arms 1 36 at both ends, the lead screw 1 38, the hollow shaft 39, the lead screw 2 42, the ball sleeve 1 40 and the ball sleeve 2 43 can be simplified into a crank slider mechanism. The vacuum motor 2 47 rotates, the reducer 2 46 amplifies the torque of the vacuum motor 2 47, and drives the lead screw 2 42 and the lead screw 1 38 to rotate, and the ball sleeve 1 40 and the ball sleeve 2 43 move linearly in the opposite direction, and the crank arms 1 36 at the front and rear ends swing accordingly, pushing the center tube 33 away or pulling it closer. The mounting plate 1 48 is welded at the tail of the center tube 33, which is used to install the reducer 1 20 in the angle adjustment mechanism 2.

[0041] The horizontal adjustment mechanism 5 is mainly composed of an elliptical central cylinder 52, a front mounting plate 70, a rear mounting plate 51, a mounting seat 1 49, a track 1 50, a support plate 2 53, a support plate 3 69, a roller 2 54, an ear plate 2 72, a crank arm 2 61, a pin 2 62, a screw rod 3 65, a hollow shaft 2 66, a screw rod 4 71, a ball sleeve 3 64, a ball sleeve 4 73, a connector 2 63, a universal joint 2 59, a shaft 6 55, a shaft 7 60, a bearing 3 68, a bearing seat 2 67, a coupling 4 56, a reducer 3 57, and a vacuum motor 3 58. The working principle of the horizontal adjustment mechanism 5 is basically the same as that of the vertical adjustment mechanism 4. Both use a crank arm slider mechanism composed of a crank arm, a ball sleeve, a screw and a cylinder to push or pull the cylinder to achieve horizontal and lateral position adjustment of the mechanism. See the attached figure. Fig.15 .

[0042] The support frame 6 is mainly composed of a front mounting ring 7, a rear mounting ring 10, an intermediate support ring 1 8, an intermediate support ring 2 9, two sets of locking rods 1 11 and one set of locking rods 2 12. The locking rods 1 11 and the locking rods 2 12 assemble the front mounting ring 7, the rear mounting ring 10, the intermediate support ring 1 8, and the intermediate support ring 2 9 into one body, and together provide support for the angle adjustment mechanism, the horizontal adjustment mechanism, and the vertical adjustment mechanism. The front mounting ring 7, the rear mounting ring 10, the intermediate support ring 1 8, and the intermediate support ring 2 9 are all equipped with rollers 3 86 for sliding on the track inside the long cylinder 14 when they are installed in the long cylinder 14.

[0043] The angle adjustment mechanism 2, vertical adjustment mechanism 4, horizontal adjustment mechanism 5, and support frame 6 are nested structures. The angle adjustment mechanism 2 is installed on the vertical adjustment mechanism 4, the bracket 15 is installed with the front bracket 32 ​​by bolts, the transmission shaft composed of shaft 4 16, hollow shaft 17, and shaft 5 18 passes through the center tube 33, and the reducer 1 20 is installed on the mounting plate 1 48 at the tail of the center tube 33. The vertical adjustment mechanism 4 is installed inside the horizontal adjustment mechanism 5, and the reducer 2 46 is installed on the mounting seat 1 49. The vertical adjustment mechanism 4 slides on the track 1 50 of the horizontal adjustment mechanism 5 through the roller 1 35. The horizontal adjustment mechanism 5 is installed in the support frame 6, and the reducer 3 57 is installed on the mounting seat 2 97. The horizontal adjustment mechanism 5 slides on the track 2 82 in the support frame 6 through the roller 2 54. The nested installation structure of these four can save assembly space to the maximum extent and realize mutual operation independence.

[0044] The angle adjustment mechanism 2, the vertical adjustment mechanism 4, and the horizontal adjustment mechanism 5 all include a transmission structure of two short shafts + a hollow shaft. This is because when the vacuum motor and the reducer of the driving mechanism are installed far away from the test area, the power transmission needs to be completed by the rotation of a longer rotating shaft, and the deflection of the rotating shaft needs to be considered. Therefore, adding a hollow shaft in the middle can both reduce the dead weight of the transmission system and increase the deflection of the longer rotating shaft.

[0045] The driving systems in the angle adjustment mechanism 2, the vertical adjustment mechanism 4, and the horizontal adjustment mechanism 5 are all composed of a vacuum motor + a reducer. This is because the power and torque of motors generally used in a vacuum environment are relatively small and it is difficult to meet the design requirements of larger loads. Therefore, a reducer with a larger transmission ratio is selected and installed in conjunction with the vacuum motor. The torque of the vacuum motor is amplified by the reducer to meet the task requirements of large loads.

[0046] Although the above describes the illustrative specific embodiments of the present invention to facilitate those skilled in the art to understand the present invention, and it should be clear that the present invention is not limited to the scope of the specific embodiments, for those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations using the concept of the present invention are protected.

Claims

1. A multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment, characterized in that: It includes a mounting tube, a water-cooled target plate seat, an angle adjustment mechanism, a horizontal adjustment mechanism, a vertical adjustment mechanism, and a supporting frame; the water-cooled target plate seat is installed on the angle adjustment mechanism and is located at the front end of the entire mechanism; the angle adjustment mechanism, the vertical adjustment mechanism, the horizontal adjustment mechanism and the mounting tube are a layer-by-layer nested installation structure, the angle adjustment mechanism is installed in the vertical adjustment mechanism, the vertical adjustment mechanism is installed in the horizontal adjustment mechanism, and the horizontal adjustment mechanism is installed in the mounting tube through the supporting frame.

2. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The installation cylinder comprises a long cylinder and a heat shield; the long cylinder is a stainless steel cylinder, a mounting flange is welded at one end, two rails are installed inside, and the other end is a stepped circular surface processed at the cylinder mouth; the front end of the heat shield is a conical cylinder, and the rear end is a straight cylinder, the material of which is stainless steel, and a stepped circular surface is processed on the inner wall of one end of the straight cylinder, which is sleeved on the stepped circular surface of the cylinder mouth and fixed by bolts.

3. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The water-cooled target plate seat comprises a water-cooling chamber, a bracket, a fixing plate, bolts, a water pipe 1 and a water pipe 2; the water-cooling chamber is a hollow box structure with a total of 5 mounting surfaces, and the angle between the mounting surfaces is 135°; the center of the bracket is a hollow axis, and the upper and lower frames are welded to the water-cooling chamber; the fixing plates are perforated circular plates, 5 in number, which are respectively mounted on the 5 mounting surfaces of the water-cooling chamber; the water pipe 1 and the water pipe 2 are metal hoses, which are respectively welded on the two sides of the water-cooling chamber; the water pipe 1 is a water inlet pipe, and the water pipe 2 is a water outlet pipe.

4. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The angle adjustment mechanism comprises a bracket 1, a bearing seat 1, a bearing 1, a worm, a worm wheel, a bearing 2, a shaft 1, a coupling 1, a shaft 2, a universal joint 1, a shaft 3, a shaft 4, a hollow shaft 1, a shaft 5, a coupling 2, a reducer 1, and a vacuum motor 1; the two ends of the worm are installed in the bearing seat 1 through a bearing 1, the bearing seat 1 is installed on the bracket 1, the worm wheel is installed concentrically with the shaft, the two ends of the shaft 1 are installed with bearings 2 and installed on the bracket 1, and the worm wheel is installed in coordination with the worm; one end of the worm is connected to the shaft 2 through a coupling 1, the shaft 2 is connected to the shaft 3 through a universal joint 1, the shaft 3 is connected to the shaft 4 through a universal joint 1, the two ends of the hollow shaft 1 are respectively connected to the shaft 4 and the shaft 5, the shaft 5 is connected to the reducer 1 through a coupling 2, and the reducer 1 is installed in coordination with the vacuum motor 1.

5. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The vertical adjustment mechanism includes a front bracket, a center tube, a support plate, a roller, an ear plate, a crank arm, a pin, a screw rod, a hollow shaft, a screw rod, a ball sleeve, a ball sleeve, a connector, a coupling, a reducer, a vacuum motor, and a mounting plate. The front bracket is a frame structure, and the front part is a perforated flat plate for mounting a water-cooled target plate seat, which is welded to the center tube. The center tube is a stainless steel cylinder, and the support plates have two groups, which are welded and mounted on the front and rear ends of the center tube respectively. Each support plate has four mounting holes for mounting a roller. The roller is mounted Installed on support plate 1; the ear plate 1 is welded on the support plate 1 at the front end and rear end of the lower part of the center tube, and is used to install a crank arm 1; the screw rod 1 and the screw rod 2 are connected by a hollow shaft 2, and the thread directions of the screw rod 1 and the screw rod 2 are opposite; the two sets of crank arms 1 are respectively connected to the ear plate 1 and the connector 1 at the front end of the center tube and the ear plate 1 and the connector 2 at the rear end of the center tube by a pin 1; the end of the screw rod 2 is connected to the rotating shaft of the reducer 2 by a coupling 3, and the reducer 2 is coaxially installed with the vacuum motor 2; the mounting plate 1 is welded at the opening at the end of the center tube, which is used to install the reducer 1.

6. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The horizontal adjustment mechanism comprises an elliptical center cylinder, a front mounting plate, a rear mounting plate, a mounting seat 1, a track 1, a support plate 2, a support plate 3, a roller 2, an ear plate 2, a crank arm 2, a pin 2, a screw rod 3, a hollow shaft 2, a screw rod 4, a ball sleeve 3, a ball sleeve 4, a connector 2, a universal joint 2, a shaft 6, a shaft 7, a bearing 3, a bearing seat 2, a coupling 4, a reducer 3, and a vacuum motor 3; the elliptical center cylinder is a stainless steel long cylinder with an elliptical cross-section, and holes are opened on the side according to needs, and a reinforcing rib plate is welded inside; the front mounting plate and the rear mounting plate are respectively welded to the front and rear ends of the elliptical center cylinder; holes are respectively opened on the front mounting plate and the rear mounting plate for installing track 1; there are 4 tracks in total, which are symmetrically installed on the front mounting plate and the rear mounting plate respectively; there are two groups of support plates 2, which are welded to the outer cylinder wall at the upper part of the elliptical center cylinder, and holes are opened to install two rollers 2; there are two groups of support plates 3, which are welded to the On the same inner wall, a hole is opened to install two rollers 2; there are four ear plates 2, which are divided into two groups and welded on the side inner wall of the elliptical center tube; connector 2 is fixedly installed with ball sleeve 3 and ball sleeve 4 respectively, ball sleeve 3 is installed in conjunction with screw rod 3, ball sleeve 4 is installed in conjunction with screw rod 4, screw rod 3 and screw rod 4 are connected through hollow shaft 2, and the spiral directions of screw rod 3 and screw rod 4 are opposite; two groups of crank arms 2 are respectively connected with ear plate 2 and connector 2 at the front end of the elliptical center tube and ear plate 2 and connector 2 at the rear end of the elliptical center tube through pin 2; bearing 3 is installed at the single-sided end of screw rod 3 and screw rod 4, and bearing 3 is installed in bearing seat 1; the end of screw rod 3 is connected with shaft 7 through universal joint 2, shaft 7 is connected with shaft 6 through universal joint 2, shaft 6 is connected with reducer 3 through coupling 4, and reducer 3 is installed coaxially with vacuum motor 3; mounting seat 2 is welded at the tail end of the elliptical center tube for installing monitoring and 2.

7. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The support frame is composed of a front mounting ring, a rear mounting ring, an intermediate support ring 1, and an intermediate support ring 2, which are assembled into one body by two sets of locking rods 1 and one set of locking rods 2, and together provide support for the angle adjustment mechanism, the horizontal adjustment mechanism, and the vertical adjustment mechanism; The front mounting ring mainly includes a slotted annular shell body 1, a reinforcing plate 1, a reinforcing plate 2, a connecting plate 1, a reinforcing rib 1, a roller 3, a bearing 4, a bearing seat 3, a bearing seat sealing plate 1, and a track 2. The slotted annular shell body 1 is a stainless steel cylindrical structure, and two grooves with an angle of 100° are opened on the outer wall along the axis; the reinforcing plate 1 and the reinforcing plate 2 are respectively welded at positions close to the front and rear ends of the slotted annular shell body, and the connecting plate 1 has two groups, which are respectively welded to the slotted annular shell body 1 and the reinforcing plate 1 and the reinforcing plate 2, and the installation direction is parallel to the groove on the slotted annular shell body 1; two groups of holes are opened on the connecting plate 1, and there are four reinforcing ribs in total, which are welded to the inner wall of the slotted annular shell body and the connecting plate in two groups; there are four groups of rollers in total, which are installed on the connecting plate 1; the bearing seat 3 is welded to the front end of the slotted annular shell body 1; the bearing 4 is installed in the bearing seat 3; the bearing seat sealing plate 1 is installed on the bearing seat 3 and fixed with bolts; there are two groups of tracks 2, which are installed on the inner side of the reinforcing plate 1 up and down; The rear mounting ring mainly includes a slotted annular shell 2, a reinforcing plate 3, a reinforcing plate 4, a reinforcing plate 5, a bearing 4, a bearing seat 4, a mounting plate 2, a connecting plate 2, a reinforcing rib 2, a roller 3, a track 2, and a mounting seat 2. The slotted annular shell 2 is a stainless steel annular structure, and two grooves with an angle of 100° are opened on the outer wall along the axis; the reinforcing plate 3, the reinforcing plate 4 and the reinforcing plate 5 are respectively welded to the front, middle and rear of the inner wall of the slotted annular shell 2; the bearing seat 4 is welded on the reinforcing plate 4; the bearing 4 is mounted on the axis The support seat 4 is inside; the connecting plate 2 is welded to the inner wall of the slotted annular shell 2, connecting the reinforcing plate 3 and the reinforcing plate 4; there are two groups of mounting plates 2, which are symmetrically welded to the inner wall of the slotted annular shell 2, located in the area between the reinforcing plate 4 and the reinforcing plate 5; there are holes on the mounting plate 2; there are four rollers 3, which are divided into two groups and respectively installed on the mounting plate 2; there are two groups of reinforcing ribs 2, which are symmetrically welded to the inner wall of the slotted annular shell 2 and the mounting plate 2; there are two rails 2, which are installed up and down on the reinforcing plate 5 near the center side of the slotted annular shell; The intermediate support ring 1 mainly includes a slotted ring 1, a reinforcing plate 6, a bearing 4, a bearing seat 5, a mounting plate 3, and a roller 3; the slotted ring 1 is a stainless steel ring, and two grooves with an angle of 100° are opened on the outer wall along the axis; the reinforcing plate 6 is welded at the axial center position of the slotted ring 1; the bearing seat 5 is welded on the side of the reinforcing plate 6 close to the rear mounting ring; the bearing 4 is installed in the bearing seat 5; there are two mounting plates 3, which are symmetrically welded on the inner side of the reinforcing plate 6 and the slotted ring 1; a hole is opened on the mounting plate 3; there are two rollers 3, which are respectively installed on two mounting plates 3; The intermediate support ring 2 mainly includes a slotted ring 2, a reinforcing plate 7, a bearing 4, a bearing seat 5, a mounting plate 4, and a roller 3; the slotted ring 2 is a stainless steel ring, and two grooves with an angle of 100° are opened on the outer wall along the axis; the reinforcing plate 7 is welded at the axial center of the slotted ring 2; the bearing seat 5 is welded on the side of the reinforcing plate 7 close to the front mounting ring; the bearing 4 is installed in the bearing seat 5; there are two mounting plates 4, which are symmetrically welded on the inner sides of the reinforcing plate 7 and the slotted ring 2; a hole is opened on the mounting plate 4; there are two rollers 3, which are respectively installed on two mounting plates 4; The locking rod mainly comprises a rod, a sleeve and a locking nut; the rod is a slender straight screw; the sleeve is a stainless steel cylinder; there are 16 sleeves in total, which are divided into 8 groups and installed concentrically with the rod; the locking nut is assembled with the rod thread; The locking pull rod 2 mainly includes pull rod 2, double-column clamping sleeve 1, and locking nut 2; pull rod 2 is a thick and long straight screw; the main body of double-column clamping sleeve 1 is a diamond-shaped center hole plate, and two sections of cylindrical compression rods are welded on one side, a total of 16; the double-column clamping sleeve is installed concentrically with pull rod 2 through the center hole, and the locking nut 2 is assembled with the pull rod 2 thread.

8. The multi-degree-of-freedom adjustment mechanism for strong magnetic field and vacuum environment according to claim 1, characterized in that: The multi-degree-of-freedom adjustment mechanism realizes stable operation of the motor in a strong magnetic field environment by placing the driving mechanism at the rear and away from the magnetic field action range of the magnet, realizes angle adjustment of the test target plate through power transmission of the motor-transmission shaft-worm gear mechanism, and realizes position adjustment of the test target plate in the horizontal, lateral and vertical directions through two sets of motor-ball screw-crank arm transmission mechanisms.

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