3.9ghz coupler cold end and hot end anti-collision installation tool and method

Abstract

The present application relates to a kind of 3.9GHz coupler cold end and hot end anti-collision installation tool and method, including basic positioning module, dynamic compensation module and anti-collision execution module, basic positioning module includes laser guide rail positioning assembly and inclination instrument integrated tool leveling system, laser guide rail positioning assembly is configured linear guide, linear guide end is provided with hot end fixed seat;Inclination instrument integrated tool leveling system includes being set on the three-axis digital inclination instrument of adjusting plate and the adjusting device fixed in the bottom of left and right hot end fixed seat by leveling bolt;Dynamic compensation module includes differential adjustment component and angle compensation unit, differential adjustment component includes 1:4.67 force level ratio formed by coarse adjustment screw rod and fine adjustment bolt, and angle compensation unit includes the combination of spherical washer and conical washer;Anti-collision execution module includes mechanical restraint device and threshold control mechanism, and mechanical restraint device includes sleeve wrench, and threshold control mechanism sets maximum safe adjustment amount and early warning adjustment amount.

Description

Technical Field

[0001] This invention belongs to the field of precision radio frequency device mounting technology, and specifically relates to a 3.9GHz coupler cold and hot end anti-collision mounting fixture and method. Background Technology

[0002] The high-power input coupler is one of the key components in a superconducting accelerator module. Its main functions include: connecting the power source to the superconducting cavity, providing microwave power to the superconducting cavity, establishing an accelerating electric field within the cavity, isolating the ultra-high vacuum environment inside the superconducting cavity from the atmospheric environment using a ceramic window, providing a transition from the cryogenic temperature of liquid ammonia in the superconducting cavity to the room temperature of the cryostat, and adjusting the coupling degree between the coupler and the superconducting cavity according to the operating status. The 3.9GHz coupler design is based on the TTF-Ⅲ type coupler structure, and the following improvements have been made to adapt to the operation of large scientific facilities: shortening the length of the inner conductor tip to obtain a higher external quality factor, increasing the thickness of the copper film plating on the surface of the inner conductor at the hot end to reduce overheating, and adopting a remotely adjustable coupling degree design to match different beam operating conditions. The high-power input coupler design structure includes the cold end of the coupler, the hot end of the coupler, a coaxial gate waveguide, an inner conductor tuning mechanism, and a capacitor assembly.

[0003] In the current technological stage, the installation of high-frequency couplers mainly adopts the following methods, but all of them have certain drawbacks: First, the hoisting and positioning method: using a crane in conjunction with manual fine-tuning to achieve the positioning and installation of the coupler. However, the positioning accuracy is low, usually greater than ±2mm, and the collision rate is as high as 45% or more when the gap between the hot and cold end conductors is less than 20mm. It is greatly affected by the operator's skill level and lacks a precise measurement and feedback mechanism. Second, installation using a single-stage screw adjustment platform aims to compensate for axial offset. However, it cannot simultaneously compensate for axial offset and angular deviation, and the maximum compensation angle is usually less than 1°. The adjustment range and accuracy of the single-stage screw adjustment platform are limited and cannot meet the needs of multi-dimensional compensation.

[0004] Therefore, how to provide a collision-proof mounting fixture and method for the cold and hot ends of a 3.9GHz coupler is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a 3.9GHz coupler cold and hot end anti-collision mounting fixture and method, which utilizes laser-mechanical linkage technology for high-precision coaxial alignment, multi-dimensional deviation synchronous compensation, and active anti-collision control. To solve the above technical problems, this invention includes the following technical solutions:

[0006] A 3.9GHz coupler cold and hot end anti-collision mounting fixture, comprising:

[0007] The basic positioning module includes a laser guide rail positioning component and an inclinometer integrated tooling leveling system. The laser guide rail positioning component is equipped with a linear guide rail, and the parallelism between the linear guide rail and the hot and cold end axes is calibrated in real time by a laser tracker. A hot end fixing seat is set at the end of the linear guide rail. The inclinometer integrated tooling leveling system includes a three-axis digital inclinometer set on an adjustment plate and an adjustment device fixed to the bottom of the left and right hot end fixing seats by leveling bolts.

[0008] The dynamic compensation module includes a differential adjustment component and an angle compensation unit. The differential adjustment component includes a coarse adjustment screw and a fine adjustment bolt forming a force ratio of 1:4.67. The angle compensation unit includes a combination of a spherical washer and a conical washer, with a compensation angle range of ±4°.

[0009] The anti-collision execution module includes a mechanical constraint device and a threshold control mechanism. The mechanical constraint device includes a socket wrench with a 0.2mm gap constraint formed by the inner and outer diameters of the socket wrench. The constraint length of the socket wrench matches the length of the cold end guide section, and the end of the socket wrench is provided with a lever arm that matches the waveguide flange spacing. The threshold control mechanism sets a maximum safe adjustment amount and a warning adjustment amount. When the adjustment amount reaches the warning adjustment amount, an audible and visual alarm is triggered. When the adjustment amount reaches the maximum safe adjustment amount, the guide rail slider is automatically locked to prevent further advancement.

[0010] Furthermore, the coarse adjustment stroke of the linear guide is 485±1mm.

[0011] Furthermore, the coarse adjustment screw is an M12 adjusting screw with a coarse adjustment stroke of 14.0 mm, and the fine adjustment screw is an M10 fine adjustment screw with a fine adjustment stroke of 2.5 mm.

[0012] Furthermore, the maximum safety adjustment amount is 14.09 mm, and the warning adjustment amount is 13.5 mm.

[0013] Furthermore, when the laser tracker calibrates the parallelism between the guide rail and the axis of the hot and cold ends in real time, the calibration error is ≤ ±0.5mm.

[0014] This invention also provides a method for anti-collision mounting fixture for the cold and hot ends of a 3.9GHz coupler, comprising:

[0015] Step S1: Provide anti-collision mounting fixtures for the cold and hot ends of the 3.9GHz coupler;

[0016] Step S2: Install the base, base screws, and bottom bracket in sequence;

[0017] Step S3: Install the guide rail fixing plate, adjusting plate, and tighten the fixing screws and M12 bolts;

[0018] Step S4: Install the front, middle and rear limit devices. When the device slides on the limit track, the distance between the modules is >485mm. The front limit is installed when the coupler waveguide is installed in the X direction. Remove the limit device before the coupler slides. The rear limit is installed when the coupler waveguide is installed in the X direction.

[0019] Step S5: Install the entire pad block and install the hot end fixing seats on both sides of the U-shaped bracket, and adjust them to be level and at the same height.

[0020] Step S6: After the coupler waveguide is in place on the fixture, simultaneously tighten the two M8 bolts on one side for leveling. After confirming the height position with the assistance of a laser instrument, lift the four coupler waveguide support points at the bottom to the corresponding height, and finally tighten the two M8 bolts on the other side. Based on the relative position of the double U-shaped hot end fixing seat, finally confirm the accurate position of the coupler, and finally tighten the four bolts on the front and rear connecting pieces to complete the positioning of the coupler before pushing.

[0021] Step S7, Hot end fixing seat bottom adjustment device: After the position of the cold end related equipment is determined, adjust the position of the 8 bolts so that the hot end inner conductor rod and the cold end are consistent in the Y direction. First tighten the 4 bolts close to the inner side, and after fine-tuning the position with the laser tracker, finally tighten the 4 bolts on the outer side.

[0022] Step S8: Install a long-handled wrench stabilizing device in the pre-drilled hole at the end of the coupler waveguide. After the laser instrument position is calibrated, prepare for the hot end installation work.

[0023] Furthermore, the installation of the coupler waveguide hot end includes the following steps:

[0024] 1. Push the tooling trolley to the position directly opposite the hot port of the thermostat installation, adjust the direction of the tooling trolley so that the upper guide rail of the tooling trolley is parallel to the direction of the hot port installation, and push the hot port fixing seat to the end of the guide rail, away from the thermostat side.

[0025] 2. Use a laser tracker to adjust the position of the tooling trolley so that the center of the thermostat installation hot port is 485±1mm away from the end face of the hot end fixing seat.

[0026] 3. Adjust the bolts at the bottom of the tooling trolley to level and lock the tooling trolley;

[0027] IV. Adjust the four M12 screws to level the second-level platform of the tooling trolley;

[0028] 5. Precision leveling of the hot end fixing seat: Push the hot end fixing seat to the end of the guide rail, start the laser tracker to measure the center distance of the hot end, the target value is 485±1mm, adjust the four M12 bolts of the second platform for coarse adjustment, so that the initial reading of the inclinometer is <0.5°; In the precision leveling stage, first observe the inclinometer data, adjust the M10 bolt according to the X-axis priority principle. If the X-axis deviation is +0.1°, turn bolt No. 1 counterclockwise 1 / 2 turn, lowering it by 0.25mm. If the Y-axis deviation is -0.08°, turn bolt No. 4 clockwise 1 / 4 turn, raising it by 0.125mm. When the standard is met, the inclinometer buzzer beeps three times and the platform automatically locks.

[0029] 6. Install the coupler waveguide lifting lugs and extend the fastener, place the assembly on the pad, and tighten the four M8×30 ​​bolts in the upper and lower directions to fix the coupler waveguide assembly. Then, press the fastening screws onto the long-handled wrench and insert it into the hot end inner conductor to install the round head bolts in place. Unscrew all the threads. Finally, fix the wrench sleeve to the waveguide flange.

[0030] 7. Gently insert the copper washer into the flange on the waveguide assembly. Use an M6 extended hex wrench to insert the inner conductor connection screw into the inner conductor hole. One person holds the hot end of the coupler vertically and uses a Phillips head wrench to insert the inner conductor connection screw, pushing the screw into the inner conductor from below the ceramic until the threaded part comes out of the inner conductor hole. Gently place the hot end of the coupler on the copper slider to prevent excessive bending and check the sliding clearance.

[0031] 8. Slowly slide the slider to allow the inner conductor of the hot end to extend into the outer conductor of the hot end. When the gap between the flange of the waveguide assembly and the top flange of the hot end of the coupler is 10mm~11mm, turn the long-handled wrench to screw the fastening bolt at the bottom of the inner conductor of the hot end into the top of the cold end. Note that while tightening the bolt, push the waveguide assembly until the screw is fully tightened and the flange face of the waveguide assembly contacts the flange of the hot end.

[0032] 9. Press the top flange of the hot-end outer conductor to the waveguide assembly flange and install the bolts. Apply a uniform torque of 7 Nm, and then use a long-handled torque wrench to tighten the center fastening bolt.

[0033] Compared with the prior art, the 3.9GHz coupler cold and hot end anti-collision mounting fixture and method provided by the present invention have the following advantages:

[0034] First, a breakthrough in adjustment precision: through the cooperation of various components on the tooling (adjusting screw, adjusting bolt, hot end fixing seat, etc.) and laser tracker and inclinometer, the axial deviation is controlled within 0.2mm / 0.05°;

[0035] Second, collision protection: The risk of contact during precision installation of inner and outer conductors is reduced by 7.5 times (from 22.5% to 3%).

[0036] Third, efficiency is improved: the three-level adjustment system reduces the installation time of a single unit from 8 hours to less than 3 hours. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler in Example 1.

[0038] In the picture,

[0039] 1-Push block, 2-Tooling carriage, 3-Fastener, 4-Connecting piece, 5-Right end hot end fixing seat, 6-Left end hot end fixing seat, 7-M8×16 socket head cap screw, 8-Stop block, 9-M10×40 fully threaded hexagonal head bolt, 10-M8×65 fully threaded hexagonal head bolt, 11-M4×14 socket head cap screw, 12-M8×30 ​​fully threaded hexagonal head bolt, 13-M6×16 fully threaded hexagonal head bolt, 14-Support bolt, 17-M4×16 socket head cap screw, 18-Guide rail, 19-M8×35 fully threaded hexagonal head bolt 21-First flat washer, 22-Guide rail fixing plate, 23-Second flat washer, 24-Hex nut M12, 25-Spherical washer D14, 26-Conical washer D14, 27-Adjusting plate, 28-M12 adjusting screw, 29-Internal hexagonal head screw M8×30, 30-Inclinometer. Detailed Implementation

[0040] The following detailed description, in conjunction with specific embodiments, provides a further detailed explanation of the anti-collision mounting fixture and method for the cold and hot ends of a 3.9GHz coupler provided by the present invention. The advantages and features of the present invention will become clearer from the following description.

[0041] The following is combined Figure 1 The structural composition of the anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler of the present invention is described in detail.

[0042] Example 1

[0043] A collision-proof mounting fixture for the cold and hot ends of a 3.9GHz coupler includes a basic positioning module, a dynamic compensation module, and a collision-proof execution module.

[0044] The basic positioning module addresses the issue of poor coarse positioning accuracy. It includes a laser guide rail positioning assembly and an inclinometer integrated tooling leveling system. The laser guide rail positioning assembly is equipped with a linear guide rail 18. A laser tracker calibrates the parallelism between the linear guide rail and the hot and cold end axes in real time. A hot end fixing seat is located at the end of the linear guide rail 18, comprising a left hot end fixing seat 6 and a right hot end fixing seat 5. The inclinometer integrated tooling leveling system includes a three-axis digital inclinometer 30 mounted on an adjusting plate 27 and adjusting devices fixed to the bottom of the left and right hot end fixing seats 6 and 5 by adjusting bolts (4 M10 adjusting bolts). The height control accuracy from the upper surface of the pad to the hot end fixing seat is 21±0.1mm, and the platform levelness is ≤0.05°. The guide rail fixing plate 22 is used to fix the linear guide rail 18.

[0045] The dynamic compensation module is used to solve multi-dimensional deviation problems. The dynamic compensation module includes a differential adjustment component and an angle compensation unit. The differential adjustment component includes a coarse adjustment screw and a fine adjustment bolt forming a force ratio of 1:4.67. The angle compensation unit includes a combination of a spherical washer 25 and a conical washer 26. The compensation angle range is ±4°, covering the measured maximum tilt angle of 3.76°. The axial force is kept uniform during the compensation process, which is achieved by the 15° angle design of the conical washer.

[0046] The anti-collision execution module is used to solve the problem of high collision rate. The anti-collision execution module includes a mechanical constraint device and a threshold control mechanism. The mechanical constraint device includes a socket wrench with a 0.2mm gap constraint formed by the inner and outer diameters of the socket wrench, for example, an inner diameter of 9.7mm and an outer diameter of 9.5mm for the long handle. The constraint length of the socket wrench matches the length of the cold end guide section, for example, 50mm. The end of the socket wrench is equipped with a lever arm that matches the waveguide flange spacing, for example, a 355mm lever arm. The threshold control mechanism sets a maximum safe adjustment amount and a warning adjustment amount. When the adjustment amount reaches the warning adjustment amount, an audible and visual alarm is triggered, for example, a yellow warning. When the adjustment amount reaches the maximum safe adjustment amount, the guide rail slider is automatically locked to prevent further advancement.

[0047] Specifically, the waveguide support point (rubber material) of the pad 1 coupler serves as a shock absorber, the bottom bolt of the tooling trolley 2 serves as a coarse adjustment function, the fastener 3 is a fully threaded hexagonal head bolt M8×15, the right end hot end fixing seat 5 and the left end hot end fixing seat 6 work together with the pad 1 to fix the coupler; the x-direction limiting device includes an internal hexagonal head screw M8×16 (7), a stop 8, a fully threaded hexagonal head bolt M10×40 (9), and a guide rail 18. The y-direction guide rail for correction includes a fully threaded hexagonal head bolt M8×30 ​​(12) and a fully threaded hexagonal head bolt M6×16 (13).

[0048] Bolts used for fixing also include fully threaded hex head bolts M8×65 (10), socket head cap screws M4×14 (11), support bolts 14, socket head cap screws M4×16 (17), fully threaded hex head bolts M8×35 (19), hex nuts M8, and socket head cap screws M8×30 ​​(29). The first slider is LSBSA28-400-F0 (medium preload)-H (advanced) standard type mir2, and the second slider is LSBSA28-400-F0 (medium preload)-H (advanced) standard type, both of which are automatically locked to prevent collision.

[0049] Adjustment plate 27 is used for leveling the xy plane. The adjustment of the z direction uses first flat washer 21, second flat washer 23, hexagonal nut M12 (24), spherical washer D14 (25), conical washer D14 (26), and M12 adjusting screw 28.

[0050] In this embodiment, more preferably, the coarse adjustment stroke of the linear guide is 485±1mm.

[0051] In this embodiment, more preferably, the coarse adjustment screw is an M12 adjusting screw 28, the coarse adjustment stroke of the M12 adjusting screw 28 is 14.0mm, corresponding to the maximum head-down distance of the cold end probe of 14.0mm, and the fine adjustment screw is an M10 fine adjustment screw, the fine adjustment stroke of the M10 fine adjustment screw is 2.5mm, which meets the accuracy requirement of ±0.1mm.

[0052] In this embodiment, more preferably, the maximum safety adjustment amount is 14.09 mm, and the warning adjustment amount is 13.5 mm.

[0053] In this embodiment, more preferably, when the laser tracker calibrates the parallelism between the guide rail and the axis of the hot and cold ends in real time, the calibration error is ≤ ±0.5mm.

[0054] Please continue to refer to this. Figure 1 This invention employs a laser-guided three-level mechanical compensation system to provide a method for anti-collision mounting fixtures for the cold and hot ends of a 3.9GHz coupler, comprising:

[0055] Step S1: Provide anti-collision mounting fixtures for the cold and hot ends of the 3.9GHz coupler;

[0056] Step S2: Install the base, base screws, and bottom bracket in sequence;

[0057] Step S3: Install the guide rail fixing plate, adjusting plate, tighten the fixing screws and M12 adjusting screw 28;

[0058] Step S4: Install the front, middle and rear limit devices. When the device slides on the limit track, the distance between the modules is >485mm. The front limit is installed when the coupler waveguide is installed in the X direction. Remove the limit device before the coupler slides. The rear limit is installed when the coupler waveguide is installed in the X direction.

[0059] Step S5: Install the entire pad block and install the hot end fixing seats on both sides of the U-shaped bracket, and adjust them to be level and at the same height.

[0060] Step S6: After the coupler waveguide is in place on the fixture, simultaneously tighten the two M8 bolts on one side for leveling. After confirming the height position with the assistance of a laser instrument, lift the four coupler waveguide support points at the bottom to the corresponding height, and finally tighten the two M8 bolts on the other side. Based on the relative position of the double U-shaped hot end fixing seat, finally confirm the accurate position of the coupler, and finally tighten the four bolts on the front and rear connecting pieces to complete the positioning of the coupler before pushing.

[0061] Step S7, Hot end fixing seat bottom adjustment device: After the position of the cold end related equipment is determined, adjust the position of the 8 bolts so that the hot end inner conductor rod and the cold end are consistent in the Y direction. First tighten the 4 bolts close to the inner side, and after fine-tuning the position with the laser tracker, finally tighten the 4 bolts on the outer side.

[0062] Step S8: Install a long-handled wrench stabilizing device in the pre-drilled hole at the end of the coupler waveguide. After the laser instrument position is calibrated, prepare for the hot end installation work.

[0063] In this embodiment, more preferably, the installation of the coupler waveguide hot end includes the following steps:

[0064] 1. Push the tooling trolley to the position directly opposite the hot port of the thermostat installation, adjust the direction of the tooling trolley so that the upper guide rail of the tooling trolley is parallel to the direction of the hot port installation, and push the hot port fixing seat to the end of the guide rail, away from the thermostat side.

[0065] 2. Use a laser tracker to adjust the position of the tooling trolley so that the center of the thermostat installation hot port is 485±1mm away from the end face of the hot end fixing seat.

[0066] 3. Adjust the bolts at the bottom of the tooling trolley to level and lock the tooling trolley;

[0067] IV. Adjust the four M12 adjusting screws 28 to level the second-level platform of the tooling trolley;

[0068] 5. Precision leveling of the hot end fixing seat: Push the hot end fixing seat to the end of the guide rail, start the laser tracker to measure the center distance of the hot end, the target value is 485±1mm, adjust the four M12 adjusting screws 28 on the second platform for coarse adjustment, so that the initial reading of the inclinometer is <0.5°; In the precision leveling stage, first observe the inclinometer data, adjust the M10 bolt 5 according to the X-axis priority principle, the X-axis deviation is +0.1°, turn bolt 1 counterclockwise 1 / 2 turn, lowering it by 0.25mm, the Y-axis deviation is -0.08°, turn bolt 4 clockwise 1 / 4 turn, raising it by 0.125mm, when the standard is met, the inclinometer buzzer beeps 3 times and the platform automatically locks;

[0069] 6. Install the coupler waveguide lifting lugs and extend the fastener, place the assembly on the pad, and tighten the four M8×30 ​​bolts in the upper and lower directions to fix the coupler waveguide assembly. Then, press the fastening screws onto the long-handled wrench and insert it into the hot end inner conductor to install the round head bolts in place. Unscrew all the threads. Finally, fix the wrench sleeve to the waveguide flange.

[0070] 7. Gently insert the CF35 copper washer into the CF35 flange on the waveguide assembly. Use an M6 extended hex wrench to insert the inner conductor connection screw into the inner conductor hole. One person holds the hot end of the coupler vertically and uses a Phillips wrench to insert the inner conductor connection screw, pushing the screw into the inner conductor from below the ceramic until the threaded part comes out of the inner conductor hole. Gently place the hot end of the coupler on the copper slider to prevent excessive bending and check the sliding clearance.

[0071] 8. Slowly slide the slider to allow the hot-end inner conductor to extend into the hot-end outer conductor. When the gap between the waveguide assembly flange and the top flange of the coupler hot end is 10mm~11mm, turn the long-handled wrench to tighten the fastening bolt at the bottom of the hot-end inner conductor into the top of the cold end. Note that while tightening the bolt, push the waveguide assembly until the screw is fully tightened and the flange face of the waveguide assembly contacts the hot-end flange. The inner diameter of the hot-end outer conductor is 30mm, and the outer diameter of the inner conductor is 13mm. Take care to prevent bumps during the sliding process.

[0072] 9. Press the top flange of the hot-end outer conductor to the waveguide assembly flange and install the bolts. Apply a uniform torque of 7 Nm, and then use a long-handled torque wrench to tighten the center fastening bolt.

[0073] The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. The above embodiments only illustrate several implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A 3.9GHz coupler cold and hot end anti-collision mounting fixture, characterized in that, include: The basic positioning module includes a laser guide rail positioning component and an inclinometer integrated tooling leveling system. The laser guide rail positioning component is equipped with a linear guide rail, and the parallelism between the linear guide rail and the hot and cold end axes is calibrated in real time by a laser tracker. A hot end fixing seat is set at the end of the linear guide rail. The inclinometer integrated tooling leveling system includes a three-axis digital inclinometer set on an adjustment plate and an adjustment device fixed to the bottom of the left and right hot end fixing seats by leveling bolts. The dynamic compensation module includes a differential adjustment component and an angle compensation unit. The differential adjustment component includes a coarse adjustment screw and a fine adjustment bolt forming a force ratio of 1:4.

67. The angle compensation unit includes a combination of a spherical washer and a conical washer, with a compensation angle range of ±4°. The anti-collision execution module includes a mechanical constraint device and a threshold control mechanism. The mechanical constraint device includes a socket wrench with a 0.2mm gap constraint formed by the inner and outer diameters of the socket wrench. The constraint length of the socket wrench matches the length of the cold end guide section, and the end of the socket wrench is provided with a lever arm that matches the waveguide flange spacing. The threshold control mechanism sets a maximum safe adjustment amount and a warning adjustment amount. When the adjustment amount reaches the warning adjustment amount, an audible and visual alarm is triggered. When the adjustment amount reaches the maximum safe adjustment amount, the guide rail slider is automatically locked to prevent further advancement.

2. The anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler according to claim 1, characterized in that, The coarse adjustment stroke of the linear guide is 485±1mm.

3. The anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler according to claim 2, characterized in that, The coarse adjustment screw is an M12 adjusting screw with a coarse adjustment stroke of 14.0 mm, and the fine adjustment screw is an M10 fine adjustment screw with a fine adjustment stroke of 2.5 mm.

4. The anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler according to claim 3, characterized in that, The maximum safety adjustment amount is 14.09 mm, and the warning adjustment amount is 13.5 mm.

5. The anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler according to claim 4, characterized in that, When the laser tracker calibrates the parallelism between the guide rail and the axis of the hot and cold ends in real time, the calibration error is ≤ ±0.5mm.

6. A method for anti-collision mounting fixture for the cold and hot ends of a 3.9GHz coupler, characterized in that, include: Step S1: Provide the anti-collision mounting fixture for the cold and hot ends of the 3.9GHz coupler as described in any one of claims 1 to 5; Step S2: Install the base, base screws, and bottom bracket in sequence; Step S3: Install the guide rail fixing plate, adjusting plate, and tighten the fixing screws and M12 bolts; Step S4: Install the front, middle and rear limit devices. When the device slides on the limit track, the distance between the modules is >485mm. The front limit is installed when the coupler waveguide is installed in the X direction. Remove the limit device before the coupler slides. The rear limit is installed when the coupler waveguide is installed in the X direction. Step S5: Install the entire pad block and install the hot end fixing seats on both sides of the U-shaped bracket, and adjust them to be level and at the same height. Step S6: After the coupler waveguide is in place on the fixture, simultaneously tighten the two M8 bolts on one side for leveling. After confirming the height position with the assistance of a laser instrument, lift the four coupler waveguide support points at the bottom to the corresponding height, and finally tighten the two M8 bolts on the other side. Based on the relative position of the double U-shaped hot end fixing seat, finally confirm the accurate position of the coupler, and finally tighten the four bolts on the front and rear connecting pieces to complete the positioning of the coupler before pushing. Step S7, Hot end fixing seat bottom adjustment device: After the position of the cold end related equipment is determined, adjust the position of the 8 bolts so that the hot end inner conductor rod and the cold end are consistent in the Y direction. First tighten the 4 bolts close to the inner side, and after fine-tuning the position with the laser tracker, finally tighten the 4 bolts on the outer side. Step S8: Install a long-handled wrench stabilizing device in the pre-drilled hole at the end of the coupler waveguide. After the laser instrument position is calibrated, prepare for the hot end installation work.

7. The method according to claim 6, characterized in that, The installation of the coupler waveguide hot end includes the following steps:

1. Push the tooling trolley to the position directly opposite the hot port of the thermostat installation, adjust the direction of the tooling trolley so that the upper guide rail of the tooling trolley is parallel to the direction of the hot port installation, and push the hot port fixing seat to the end of the guide rail, away from the thermostat side.

2. Use a laser tracker to adjust the position of the tooling trolley so that the center of the thermostat installation hot port is 485±1mm away from the end face of the hot end fixing seat.

3. Adjust the bolts at the bottom of the tooling trolley to level and lock the tooling trolley; IV. Adjust the four M12 screws to level the second-level platform of the tooling trolley; 5. Precision leveling of the hot-end fixing bracket: Push the hot-end fixing bracket to the end of the guide rail, start the laser tracker to measure the center distance of the hot port, the target value is 485±1mm, adjust the four M12 bolts of the second-layer platform for coarse adjustment, so that the initial reading of the inclinometer is <0.5°; In the precision leveling stage, first observe the inclinometer data, adjust the M10 bolts according to the X-axis priority principle. If the X-axis deviation is +0.1°, turn bolt No. 1 counterclockwise 1 / 2 turn, lowering it by 0.25mm; if the Y-axis deviation is -0.08°, turn bolt No. 4 clockwise 1 / 4 turn, raising it by 0.125mm. When the target is met, the inclinometer buzzer beeps three times, and the platform automatically locks.

6. Install the coupler waveguide lifting lugs and extend the fastener, place the assembly on the pad, and tighten the four M8×30 ​​bolts in the upper and lower directions to fix the coupler waveguide assembly. Then, press the fastening screws onto the long-handled wrench and insert it into the hot end inner conductor to install the round head bolts in place. Unscrew all the threads. Finally, fix the wrench sleeve to the waveguide flange.

7. Gently insert the copper washer into the flange on the waveguide assembly. Use an M6 extended hex wrench to insert the inner conductor connection screw into the inner conductor hole. One person holds the hot end of the coupler vertically and uses a Phillips head wrench to insert the inner conductor connection screw, pushing the screw into the inner conductor from below the ceramic until the threaded part comes out of the inner conductor hole. Gently place the hot end of the coupler on the copper slider to prevent excessive bending and check the sliding clearance.

8. Slowly slide the slider to allow the inner conductor of the hot end to extend into the outer conductor of the hot end. When the gap between the flange of the waveguide assembly and the top flange of the hot end of the coupler is 10mm~11mm, turn the long-handled wrench to screw the fastening bolt at the bottom of the inner conductor of the hot end into the top of the cold end. Note that while tightening the bolt, push the waveguide assembly until the screw is fully tightened and the flange face of the waveguide assembly contacts the flange of the hot end.

9. Press the top flange of the hot-end outer conductor to the waveguide assembly flange and install the bolts. Apply a uniform torque of 7 Nm, and then use a long-handled torque wrench to tighten the center fastening bolt.

Images