Positioning racking system for coating film on large-size optical element

Abstract

The invention discloses a positioning racking system for coating a large-size optical element. The positioning racking system comprises a main body structure, a lifting mechanism, a rotary bearing platform, a movement mechanism and a safety protection mechanism. A main body structure adopts a rigid design of composite support of a tripod and a tailstock. The lifting mechanism drives double ball screws to move synchronously through a worm and gear speed reducer, and precise lifting of the bearing platform is achieved. The rotary bearing platform can freely rotate by 360 degrees and is provided with a balance weight groove to adjust the gravity center. And the movement mechanism realizes flexible movement and stable support of the system. The safety protection mechanism integrates inclination angle, overload and limiting detection. The problems that a large-size and high-surface-shape-precision optical element is difficult to mount and position and poor in operation safety in the coating process are solved, and auxiliary mounting and positioning of a tool are safely, conveniently and precisely completed outside a coating machine.

Description

Technical Field

[0001] The present invention relates to the field of vacuum optical coating, and particularly to a positioning and mounting system for coating large-sized optical elements. Background Art

[0002] The coating technology for large-aperture infrared optical elements is one of the key technologies for high-resolution space cameras. Currently, the maximum size of optical elements applied to high-resolution space cameras has exceeded 2000 mm in aperture and weighs more than 500 kg. During the coating process, the optical element needs to be hoisted to the top of the vacuum chamber. Due to its large self-weight, the requirements for the coating hoisting technology are very high. A coating auxiliary installation device needs to be designed specifically for coating large-aperture infrared optical elements to ensure that the surface shape accuracy of the optical element meets the requirements during the coating hoisting process.

[0003] Currently, there is no supporting coating auxiliary installation system for large-sized coating machine manufacturers at home and abroad. Most customers modify forklifts into simple coating auxiliary installation devices according to their own needs. These devices have a large start-up speed, sudden pauses, and fast lifting rates during the lifting process, and cannot ensure the high-precision requirements of the surface shape of the optical element. When carrying a large load, the fork arm platform tilts severely, and it is difficult to install the product on the workpiece rack of the coating machine. Moreover, most of the existing devices are hydraulic lifting type, and it is extremely easy for the mirror body product to fall after a failure, with a high usage risk.

[0004] Therefore, there is an urgent need to design a coating auxiliary installation system for large-aperture infrared optical elements, which can meet the high-precision requirements of the surface shape of the mirror, has a high alignment accuracy during product installation, and can ensure the safety of the product during use. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning and mounting system for coating large-sized optical elements, which solves the problems that the existing coating auxiliary installation system has a large start-up speed, sudden pauses, and fast lifting rates during the lifting process and cannot ensure the high-precision requirements of the surface shape of the optical element; solves the problem that the fork arm platform tilts severely when carrying a large load in the prior art and it is difficult to install the product on the workpiece rack of the coating machine; and solves the problem that most of the existing devices are hydraulic lifting type and it is extremely easy for the mirror body product to fall after a failure, with a high usage risk.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A positioning and mounting system for coating large-sized optical elements, which includes a main structure, a lifting mechanism, a rotating and carrying platform, and a motion mechanism;

[0008] The main structure includes a bottom plate and a column vertically fixed in the center of the bottom plate;

[0009] The lifting mechanism includes a drive assembly and a guide assembly. The drive assembly includes a drive component and a ball screw, with the ball screw positioned between the top of the column and the base plate. The drive component drives the rotation of the ball screw, which has a screw nut that can move linearly up and down with its rotation. The guide assembly includes slide rails installed parallel to both sides of the ball screw and a slider that can slide up and down on the slide rails.

[0010] The rotating bearing platform is sleeved on the outside of the column and connected to the lead screw nut of the lifting mechanism and the slider of the guide assembly. The rotating bearing platform is lifted and lowered on the main structure under the drive of the drive assembly and with the assistance of the guide assembly. The rotating bearing platform includes a hollow sliding hole in the middle that is sleeved on the outside of the column, and a front bearing platform and a rear counterweight groove at both ends of the sliding hole. The front bearing platform has a fork plate and a cross platform rotatably connected to the fork plate.

[0011] The motion mechanism is located at the bottom of the base plate.

[0012] The main structure is also equipped with a front support frame and a support tail frame to keep the column perpendicular to the base plate. The front support frame is a triangular frame. The front support frame and the support tail frame are respectively set at both ends of the column and clamp and fix the column.

[0013] The drive assembly is equipped with two ball screws, and the guide assembly is equipped with two pairs of slide rails. Each ball screw is matched with a pair of slide rails; each ball screw is equipped with a screw nut; and each slide rail is equipped with two sliders.

[0014] Each ball screw has a slide rail arranged side by side on both sides; the two ball screws and the two pairs of slide rails are symmetrically arranged on the outside of the column;

[0015] The sliding hole of the rotating bearing platform is square. The two opposite sides of the sliding hole are connected to the corresponding ball screw and slide rail respectively. Each side is connected to a corresponding screw nut and four sliders.

[0016] A motor platform is installed on the top of the main structure. The drive components of the drive assembly are mounted on the motor platform. Two ball screws are connected to the drive components via couplings. The drive components include a variable frequency drive motor, a high-ratio worm gear reducer, and two low-ratio worm gear reducers. The couplings are connected to the low-ratio worm gear reducers. The variable frequency drive motor and the high-ratio worm gear reducer are axially and horizontally mounted on the motor platform. The two low-ratio worm gear reducers are axially and vertically mounted on both sides of the high-ratio worm gear reducer. The two ball screws are respectively connected to the output ends of the two low-ratio worm gear reducers via couplings.

[0017] The lifting mechanism controls the rotation of the bearing platform to rise and fall at a rate of less than or equal to 0.5 mm / s.

[0018] The cross platform is rotatably connected to the fork plate via a flange bushing, platform shaft, and can rotate freely 360°.

[0019] The motion mechanism includes steering wheels and support wheels. The steering wheels are drive steering wheels, and the support wheels include rear support wheels and front support wheels. At least one pair of rear support wheels and at least one pair of front support wheels are provided.

[0020] The drive steering wheel is mounted to the center bottom of the support tail frame via a drive connector; the rear support wheels are symmetrically mounted on the bottom sides of the support tail frame; and the front support wheels are mounted on the bottom of the base plate.

[0021] Three pairs of front support wheels are installed in parallel and symmetrically on the bottom of the base plate.

[0022] The positioning and mounting system is also equipped with a safety protection mechanism, which includes an inclination detector, an axial pressure sensor, an upper limit switch, a lower limit switch, and an emergency stop button for manual shutdown in case of emergency. The inclination detector and the upper limit switch are installed on the top of the column, the axial pressure sensor is installed in the middle of the platform shaft, and the lower limit switch is installed on the top of the support tail frame.

[0023] When the system tilt angle exceeds 3°, the tilt angle detector triggers a shutdown; the upper and lower limit switches trigger limit signals and stop the machine when the rotating bearing platform reaches its limit position; when the load exceeds the set value of the cross platform, the axial pressure sensor triggers a stop to lifting and rotating and issues an alarm.

[0024] Based on the above technical features, the present invention has the following beneficial effects: 1. High rigidity and accurate positioning: The main structure adopts a composite support of a triangular frame and a tail frame. Under heavy loads, the deformation of the rotating bearing platform when raised to the height of the coating machine workpiece frame is minimal, effectively preventing platform tilting and ensuring high-precision alignment between the coating fixture and the coating machine turntable, avoiding thread jamming caused by tilting. 2. Smooth and precise lifting of the rotating bearing platform: The lifting system, composed of a worm gear reducer and a ball screw, provides high control precision, with a lifting speed accuracy of up to 0.5mm / s and low start-stop acceleration, meeting the high surface area requirements for stable lifting of large-diameter optical components. The ball screw is fitted with slide rails on both sides, making the operation of the rotating bearing platform more stable and reliable. 3. Safe and reliable: The lifting system achieves mechanical synchronization of the two screws through synchronous gears and can immediately self-lock in the event of a power failure, preventing the platform from falling. The rigid connection between the rotating bearing platform, the slider, and the screw nut further ensures the stability of the load. 4. Convenient and safe operation: The cross platform can rotate freely 360°, allowing all operations such as assembly and adjustment of the coating fixture and coating machine turntable to be completed outside the coating machine, eliminating the need for operators to enter the equipment and significantly improving operational safety and convenience. 5. Flexible and stable movement: The motion mechanism adopts a single-drive steering wheel combined with multiple sets of load-bearing wheels, achieving flexible steering and high stability during movement. 6. Multiple safety protections: Integrating multiple sensors and protection devices such as tilt angle, overload, and limit switches, it can immediately stop operation when the system tilts, is overloaded, or exceeds lifting limits, providing comprehensive protection for equipment and personnel safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the lifting mechanism of the present invention.

[0027] Figure 3 This is a schematic diagram of the rotating bearing platform of the present invention.

[0028] Figure 4 This is a schematic diagram of the motion mechanism of the present invention.

[0029] Figure 5 This is a schematic diagram illustrating an embodiment of the present invention.

[0030] In the diagram: 1-Main structure; 2-Lifting structure; 3-Rotating bearing platform; 4-Motion mechanism; 5-Safety protection mechanism; 101-Base plate; 102-Column; 103-Front support frame; 104-Support tail frame; 201-Variable frequency drive motor; 202-High gear ratio worm gear reducer; 203-Low gear ratio worm gear reducer; 204-Fixed bracket; 205-Motor platform; 206-Coupling; 207-Ball screw; 208-Upper BK bearing seat; 209-Slide rail; 210-Slider; 211-Screw nut; 212-Lower BF bearing seat; 213-Support bracket; 301-Fork plate; 302-Rear counterweight groove; 303-Cross platform; 304-Square flange bushing; 305-Platform shaft; 401-Drive steering wheel; 402-Drive connector; 403-Rear support wheel; 404-Front support wheel; 501-Inclination detector; 502-Axial pressure sensor; 503-Upper limit switch; 504-Lower limit switch; 505-Emergency stop button; 601-Coating machine cavity; 602-Coating machine workpiece rack; 603-Lifting screw; 604-Coating fixture. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that some components well-known to those skilled in the art but not related to the main content of the present invention may be omitted in the drawings or description. Additionally, for ease of description, some components in the drawings may be omitted, enlarged, or reduced, but this does not represent the actual size or complete structure of the product.

[0032] A positioning and mounting system for coating large-size optical components, such as Figure 1-4 As shown, the positioning and mounting system includes a main structure 1, a lifting mechanism 2, a rotating bearing platform 3, and a motion mechanism 4.

[0033] like Figure 1 As shown, the main structure 1 includes a base plate 101 and a column 102 vertically fixed to the center of the base plate 101. To keep the column 102 perpendicular to and fixed to the base plate 101, a front support frame 103 and a support tail frame 104 are also provided. The front support frame 103 is a tripod. The front support frame 103 and the support tail frame 104 are respectively set at both ends of the column 102 and clamp and fix the column 102.

[0034] Preferably, the base plate 101 adopts a densely reinforced rib structure, and the column 102 is welded from two high-strength seamless square tubes (250mm*250mm, wall thickness 20mm) to ensure that the overall structure has a small deformation under heavy load.

[0035] like Figure 1 , Figure 4As shown, the motion mechanism 4 consists of a steering wheel and a support wheel located at the bottom of the base plate 101. The steering wheel is a drive steering wheel 401, and the support wheel includes a rear support wheel 403 and a front support wheel 404. At least one pair of rear support wheels 403 and at least one pair of front support wheels 404 are provided.

[0036] Furthermore, the drive steering wheel 401 is installed at the central bottom of the support tail frame 104 via the drive connector 402, realizing single-wheel drive and flexible steering. The drive steering wheel 401 is commonly made by Qingdao Aotes, and its model is HL343.

[0037] The rear support wheels 403 are symmetrically installed on both sides of the bottom of the support tail frame 104 to ensure the stability of the system during movement and platform lifting. The front support wheels 404 are installed at the front end of the bottom of the base plate 101.

[0038] Preferably, such as Figure 4 As shown, three pairs of front support wheels 404 are installed in parallel and symmetrically at the front end of the bottom of the base plate 101, with three front support wheels 404 installed on one side to bear the weight evenly.

[0039] like Figure 1 , Figure 2 As shown, the lifting mechanism 2 includes a drive assembly and a guide assembly. The drive assembly includes a drive component and a ball screw 207, which is disposed between the top of the column 102 and the base plate 101. The drive component drives the rotation of the ball screw 207, and the ball screw 207 is provided with a screw nut 211 that can move linearly up and down with its rotation. The guide assembly includes slide rails 209 installed parallel to both sides of the ball screw 207, and sliders 210 that are provided on the slide rails 209 for lifting and sliding. Two sliders 210 are provided on each slide rail 209.

[0040] like Figure 2 As shown, a motor platform 205 is installed on the top of the main structure 1. The drive component of the drive assembly is mounted on the motor platform 205. The drive assembly includes two ball screws 207, which are connected to the drive component via a coupling 206. The corresponding guide assembly is provided with two pairs of slide rails 209, with each ball screw 207 matched with a pair of slide rails 209. Two slide rails 209 are arranged side by side on each side of each ball screw 207. The two ball screws 207 and the two pairs of slide rails 209 are symmetrically arranged on the outer side of the column 102. That is, a ball screw 207 is evenly spaced between each pair of slide rails 209, and both the ball screws 207 and the slide rails 209 are parallel to the vertical direction of the column 102.

[0041] The drive components include a variable frequency drive motor 201, a high-ratio worm gear reducer 202, and two low-ratio worm gear reducers 203; the coupling 206 is connected to the low-ratio worm gear reducers 203.

[0042] like Figure 1 , 2 As shown, the variable frequency drive motor 201 and the high-ratio worm gear reducer 202 are axially and horizontally mounted on the motor platform 205. Two low-ratio worm gear reducers 203 are axially and vertically mounted on both sides of the high-ratio worm gear reducer 202 and fixed to the motor platform 205 by a fixing bracket 204. Two ball screws 207 are connected to the output ends of the two low-ratio worm gear reducers 203 by couplings 206. The upper and lower ends of each ball screw 207 are fixed to the top of the column 102 and the support bracket 213 by the upper BK bearing seat 208 and the lower BF bearing seat 212, respectively. Each ball screw 207 is equipped with a screw nut 211 that can move linearly up and down with its rotation.

[0043] In practice, the commonly used variable frequency drive motor 201 is model HY112B3-48V5.0-1500, branded by Changzhou Hengyuan; the high gear ratio worm gear reducer 202 is branded by Saichi Transmission, model RV110, with a speed ratio of 80; the low gear ratio worm gear reducer 203 is branded by Saichi Transmission, model RV90, with a speed ratio of 30; the slide rail 209 and slider 210 are branded by HIWIN (Taiwan), model HG65 & HG65CA; and the ball screw 207 is branded by Dongyuan Bearing, model DFU05010-4.

[0044] The lifting mechanism 2 provides high torque and low speed through the combination of "variable frequency motor + worm gear reducer" to drive the ball screw to achieve high-precision lifting of the screw nut.

[0045] like Figure 1 , Figure 3 As shown, the rotating bearing platform 3 is sleeved on the outside of the column 102 and connected to the lead screw nut 211 of the lifting mechanism 2 and the slider 210 of the guide assembly. The rotating bearing platform 3 is driven by the drive assembly and assisted by the guide assembly to rise and fall on the main structure 1. The rotating bearing platform 3 includes a hollow sliding hole in the middle that is sleeved on the outside of the column 102, and a front bearing platform and a rear counterweight groove 302 at both ends of the sliding hole. The front bearing platform has a fork plate 301 and a cross platform 303 rotatably connected to the fork plate 301.

[0046] Furthermore, the sliding hole of the rotating support platform 3 is square, and the opposite sides of the sliding hole are respectively connected to a corresponding ball screw 207 and two slide rails 209. Each side is connected to a corresponding screw nut 211 and four sliders 210. The screw nut 211 drives the lifting and lowering of the rotating support platform 3, and the slide rails 209 stabilize the lifting and lowering of the rotating support platform 3.

[0047] The lifting mechanism 2 controls the rotation of the bearing platform 3, and the rising and falling rate is less than or equal to 0.5 mm / s.

[0048] like Figure 1 , Figure 3 As shown, the cross platform 303 is rotatably connected to the fork plate 301 through the flange bushing 304 and the platform shaft 305, and the cross platform 303 can rotate freely 360°.

[0049] Under heavy load conditions, a counterweight can be added to the rear counterweight groove 302 to shift the platform's center of gravity backward and reduce the forward tilting moment. The dual-sided "ball screw 207 + slide rail 209" structure effectively ensures the platform's levelness under heavy loads.

[0050] like Figure 1 , Figure 3 As shown, the positioning and mounting system is also equipped with a safety protection mechanism 5, which includes an inclination detector 501, an axial pressure sensor 502, an upper limit switch 503, a lower limit switch 504, and an emergency stop button 505 for manual shutdown in case of emergency.

[0051] The tilt detector 501 is installed on the top of the column 102. When the tilt angle of the system exceeds 3°, the tilt detector 501 triggers a stop. The upper limit switch 503 is installed on the top of the column 102, and the lower limit switch 504 is installed on the top of the support tail frame 104. The upper limit switch 503 and the lower limit switch 504 trigger a limit signal and stop the machine when the rotating bearing platform 3 reaches the limit position. The axial pressure sensor 502 is installed in the middle of the platform shaft 305. When the load exceeds the set value of the cross platform 303 (such as 2000 kg), the axial pressure sensor 502 triggers a stop to lifting and rotating and issues an alarm.

[0052] The tailstock 104 is equipped with an operation panel, and the emergency stop button 505 is located next to the operation panel for manual stopping in an emergency.

[0053] The tilt meter 501 is from Shenzhen Ruifen Technology, model LCA328T-15-A1; the axial pressure sensor 502 is from Jinno, model JHBM-4; the upper limit switch 503 and the lower limit switch 504 are from Lingguang Technology, model LG-CHM8N.

[0054] The positioning and mounting system circuit and sensing control of this invention are implemented using a PLC controller and an operation display system. The PLC controller is a Siemens SIMATIC S7-200, and the control system and human-machine interface are based on the HC-SUK8070-C industrial human-machine interface from the SpeedControl brand.

[0055] The following example illustrates the application of the positioning and mounting system of the present invention in the coating of large-size optical components. The specific process is as follows:

[0056] First, use the remote control handle to operate the positioning and mounting system of the present invention to lower the rotating bearing platform 3 to the lowest position, and then hoist the large-size optical element together with the matching coating fixture 604 onto the cross platform 303 of the rotating bearing platform 3, and adjust the coating fixture 604 and the cross platform 303 to be concentric.

[0057] Next, the drive mechanism 4 is activated, causing the positioning mounting system to slowly advance. The cross platform 303 extends into the coating machine cavity 601, and the front end of the base plate 101 aligns with the positioning slot at the bottom of the coating machine. Figure 5 As shown, after the front end of the base plate 101 is aligned with the positioning slot at the bottom of the coating machine, the cross platform 303 and the center of the coating machine can be made concentric.

[0058] Slowly raise and rotate the bearing platform 3. When the height is close to the workpiece rack 602 of the coating machine, stop raising. Manually rotate the cross platform 303 to align the lifting hole of the coating fixture 604 with the lifting screw 603 inside the coating machine. The operator inserts the lifting screw 603 outside the vacuum room and fixes it with a nut. Tighten the nut with a torque wrench to ensure even force distribution. After fixing one lifting screw 603, rotate the cross platform 303 to rotate the subsequent lifting screws 603 to the outside of the vacuum room in sequence and fix them one by one in the same way.

[0059] After all the hoisting screws 603 are fixed, slowly lower and rotate the bearing platform 3 to the lowest position, and the positioning and mounting system is removed from the vacuum chamber.

[0060] After the coating is completed, the rotating support platform 3 moves to cooperate with the coating machine. The coating fixture 604 and the cross platform 303 extend into the coating machine cavity 601, and the large-size optical components are unloaded using the reverse procedure described above.

[0061] In this embodiment, the large-size optical element is a lightweight silicon carbide infrared reflector with dimensions of 1100mm*870mm*150mm, and a total weight of 300Kg including the coating fixture. During the implementation process, the horizontal tilt of the cross platform 303 was less than 1mm, the slowest adjustable ascent / descent rate was 0.5mm / s, and the axial eccentricity was less than 2mm. The entire mounting process was vibration-free and took approximately 45 minutes, far shorter than the at least 3 hours required for a mounting system using a forklift, which also requires more operators.

[0062] This embodiment tested the surface shape and surface quality of a large-size silicon carbide infrared reflector mounted and coated using the present invention, and the mounting system modified from a forklift. The surface shape test used a Zygo 600mm aperture interferometer, measuring wavelength λ = 632.8nm, and the measured quantity was the RMS value of the mirror surface. The surface quality test used an OLYMPUS upright microscope, model BX51TRF, and the measured quantity was the number of surface pits (diameter ≥ 20 micrometers). After using the present invention, the RMS value before coating was 0.027λ, and after coating it was 0.030λ, with a surface pit count of 10 pits / cm. 2 The mounting system, modified from a forklift, had an RMS value of 0.025λ before coating and 0.040λ after coating, with 17 surface pits per cm. 2 .

[0063] It is evident that the present invention significantly improves alignment accuracy during the coating and mounting process of large-size optical components, thereby improving the surface shape of large-size optical components; the present invention significantly reduces the mounting time and shortens the time that large-size optical components are exposed to air before coating, thereby reducing the number of dust particles in the air adhering to the mirror surface and improving surface quality.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes and modifications made within the scope of the claims of this invention should be considered within the technical scope of this invention.

Claims

1. A positioning and mounting system for coating large-size optical components, characterized in that: The positioning and mounting system includes a main structure (1), a lifting mechanism (2), a rotating bearing platform (3), and a motion mechanism (4). The main structure (1) includes a base plate (101) and a column (102) vertically fixed to the center of the base plate (101). The lifting mechanism (2) includes a drive assembly and a guide assembly. The drive assembly includes a drive component and a ball screw (207). The ball screw (207) is disposed between the top of the column (102) and the base plate (101). The drive component drives the rotation of the ball screw (207). The ball screw (207) is provided with a screw nut (211) that can move up and down linearly with its rotation. The guide assembly includes slide rails (209) installed parallel to both sides of the ball screw (207) and a slider (210) that is mounted on the slide rails (209) for lifting and sliding. The rotating bearing platform (3) is sleeved on the outside of the column (102) and connected to the screw nut (211) of the lifting mechanism (2) and the slider (210) of the guide component. The rotating bearing platform (3) is driven by the drive component and assisted by the guide component to rise and fall on the main structure (1). The rotating bearing platform (3) includes a hollow sliding hole in the middle, sleeved on the outside of the column (102), and a front bearing platform and a rear counterweight groove (302) at both ends of the sliding hole. The front bearing platform has a fork plate (301) and a cross platform (303) rotatably connected to the fork plate (301). The motion mechanism (4) is located at the bottom of the base plate (101).

2. The positioning and mounting system as described in claim 1, characterized in that: The main structure (1) is also provided with a front support frame (103) and a support tail frame (104) to keep the column (102) perpendicular to the base plate (101). The front support frame (103) is a triangular frame. The front support frame (103) and the support tail frame (104) are respectively set at both ends of the column (102) and clamp and fix the column (102). The drive assembly is equipped with two ball screws (207), and the guide assembly is equipped with two pairs of slide rails (209). Each ball screw (207) is equipped with a pair of slide rails (209); each ball screw (207) is equipped with a screw nut (211); each slide rail (209) is equipped with two sliders (210). Each ball screw (207) has a slide rail (209) arranged side by side on both sides; the two ball screws (207) and the two pairs of slide rails (209) are symmetrically arranged on the outside of the column (102); The sliding hole of the rotating bearing platform (3) is square. The two opposite sides of the sliding hole are connected to the corresponding ball screw (207) and slide rail (209) respectively. Each side is connected to a corresponding screw nut (211) and four sliders (210).

3. The positioning and mounting system as described in claim 2, characterized in that: The main structure (1) has a motor platform (205) on top, and the drive components of the drive assembly are installed on the motor platform (205). Two ball screws (207) are connected to the drive components through a coupling (206). The drive components include a variable frequency drive motor (201), a high-ratio worm gear reducer (202), and two low-ratio worm gear reducers (203). The coupling (206) is connected to the low-ratio worm gear reducers (203). The variable frequency drive motor (201) and the high-ratio worm gear reducer (202) are axially and horizontally installed on the motor platform (205), and the two low-ratio worm gear reducers (203) are axially and vertically installed on both sides of the high-ratio worm gear reducer (202). The two ball screws (207) are respectively connected to the output ends of the two low-ratio worm gear reducers (203) through the coupling (206).

4. The positioning and mounting system as described in claim 2, characterized in that: The lifting mechanism (2) controls the rotation of the bearing platform (3) with an upward and downward rate of less than or equal to 0.5 mm / s.

5. The positioning and mounting system as described in claim 1, characterized in that: The cross platform (303) is rotatably connected to the fork plate (301) through the flange bushing (304) and the platform shaft (305), and the cross platform (303) can rotate freely in 360°.

6. The positioning and mounting system as described in claim 1, characterized in that: The motion mechanism (4) includes a steering wheel and a support wheel. The steering wheel is a drive steering wheel (401), and the support wheel includes a rear support wheel (403) and a front support wheel (404). At least one pair of rear support wheels (403) and at least one pair of front support wheels (404) are provided. The drive steering wheel (401) is mounted on the central bottom of the support tail frame (104) via the drive connector (402); the rear support wheel (403) is symmetrically mounted on the bottom sides of the support tail frame (104); and the front support wheel (404) is mounted on the front end of the bottom of the base plate (101).

7. The positioning and mounting system as described in claim 6, characterized in that: Three pairs of front support wheels (404) are installed in parallel and symmetrically at the front end of the bottom of the base plate (101).

8. The positioning and mounting system as described in claim 1, characterized in that: The positioning and mounting system is also equipped with a safety protection mechanism (5), which includes an inclination detector (501), an axial pressure sensor (502), an upper limit switch (503), a lower limit switch (504), and an emergency stop button (505) for manual shutdown in case of emergency. The inclination detector (501) and the upper limit switch (503) are installed on the top of the column (102), the axial pressure sensor (502) is installed in the middle of the platform pivot (305), and the lower limit switch (504) is installed on the top of the support tail frame (104). When the system tilt angle exceeds 3°, the tilt angle detector (501) triggers a shutdown; the upper limit switch (503) and the lower limit switch (504) trigger limit signals and stop the machine when the rotating bearing platform (3) runs to the limit position; when the load exceeds the set value of the cross platform (303), the axial pressure sensor (502) triggers a stop to lifting and rotating and issues an alarm.

Images