A three-point dynamic balance detection and positioning system

Abstract

The present invention discloses a three-point dynamic balance detection and positioning system, which is used to detect and position the dynamic balance driven on a crystal furnace, and includes a detection platform and a data processing module; the detection platform includes three proximity switches and three weighing sensors, and the dynamic balance is detected by three points, with high accuracy and easy adjustment. The data processing module can automatically calculate the position where the counterweight is required based on the data such as the origin and the rotation speed through the proximity switch, and can automatically calculate the required counterweight in conjunction with the weighing sensor, without the need for manual participation in the calculation.

Description

Technical Field

[0001] The invention relates to the technical field of crystal furnace production equipment, and in particular to the technical field of upper drive dynamic balance detection of a crystal furnace. Background Art

[0002] The rotation speed of the drive on the crystal furnace is generally 0 to 30 rpm. Once an imbalance occurs, the sub-chamber will shake. In order to increase production capacity, the length of the sub-chamber can reach more than 7 meters. Therefore, a slight shake at the end will cause obvious shaking at the terminal, increasing the difficulty of crystal growth. In addition, long-term shaking will accelerate the aging of the seal between the sub-chamber and the locking ring, resulting in a decrease in vacuum, and even causing the crystal rod to fall during the crystal pulling process, the crucible to break and leak silicon, damage the thermal field, and cause personal injury. The shaking of the crystal rod will affect the quality of the crystal. Therefore, it is necessary to ensure the dynamic balance of the upper drive to meet the design requirements.

[0003] At present, most of the existing dynamic balancing detection mechanisms are aimed at detecting tires, fans, motors, crankshafts, couplings, transmission shafts, main shafts, water pump impellers, tools, motors and turbine rotors, etc., and there are few unique dynamic balancing detection systems designed for the characteristics of large crystal furnaces. If the existing dynamic balancing detection mechanisms such as rotor detection are applied to detect crystal furnaces, due to the low adaptability, the entire detection mechanism will be complex in structure and require high quality of operators, and the technical level of the operators will have a great impact on the debugging results, and the practicality will be lacking. Summary of the invention

[0004] Purpose of the invention: In view of the above shortcomings, the present invention provides a three-point dynamic balance detection and positioning system, which is a lateral dynamic balance detection system for detecting the dynamic balance of the upper drive of the crystal furnace at low speed. The system fixes the upper drive in a convenient way, automatically detects the speed of the upper drive, and the weight of each angle, and automatically calculates the position and weight of the counterweight block to be added, thereby improving efficiency and stability of dynamic balance.

[0005] Technical solution: To solve the above problems, the present invention can adopt the following technical solutions:

[0006] A three-point dynamic balance detection and positioning system is used to detect and position the dynamic balance driven on a crystal furnace, including a detection platform and a data processing module;

[0007] The detection platform includes a circular mounting plate for carrying the upper drive, three proximity switch support rods extending upward from the circular mounting plate, a proximity switch located on the proximity switch support rod, an upper drive positioning buckle located on the circular mounting plate, three fixed bases supporting the circular mounting plate, and a weighing sensor located between the three fixed bases and the circular mounting plate; the three proximity switch support rods are evenly arranged on the circumference at an angle of 120° to each other and at the same distance from the center of the circle, and each weighing sensor is located directly below a corresponding proximity switch support rod; the three proximity switches are respectively a first proximity switch, a second proximity switch, and a third proximity switch;

[0008] The upper drive positioning buckle is used to fix the crystal furnace upper drive centering installation on the circular mounting plate, so that each proximity switch is located directly below the metal sensing seat at the bottom; angle scale lines are set around the outer edge of the multifunctional circular mounting plate;

[0009] When the drive on the rotating crystal furnace is triggered for the first time by the metal induction seat, the data processing module automatically enters the calculation to obtain the current weight x1, x2, x3 obtained by each weighing sensor. After multiple rotations, it can be known that the values ​​obtained by the three weighing sensors are the smallest at t1, t2, and t3 seconds, and the difference between the three times t1, t2, and t3 is a / 3 seconds, where a is the time for one rotation; the first contact switch is set as the origin, so when the weight x1 is the smallest, the current angle b is calculated through t1, that is, b=360 / a*t1; when the first contact switch is triggered, the drive rotation on the crystal furnace is stopped, that is, the current position is the origin; the position of the required counterweight block is located through the angle scale line on the multifunctional circular mounting plate, and the counterweight block is installed;

[0010] According to the lever principle: power × power arm = resistance × resistance arm, the weight of the counterweight is calculated based on: power = resistance × resistance arm / power arm.

[0011] Furthermore, the weighing sensor, the fixed base and the circular mounting plate are separable.

[0012] Furthermore, three levels are provided on the circular mounting plate, and the platform surface is kept in a horizontal state by adjusting the locking nuts of the fixed base.

[0013] Furthermore, a centripetal slide groove is provided on the circular mounting plate; three upper drive fixing buckles are placed on the bottom plate of the upper drive through the slide groove, and the upper drive is fixed on the multifunctional circular mounting plate through three locking nuts.

[0014] Furthermore, a transversely extending proximity switch mounting plate is installed on the proximity switch support rod, and a proximity switch is arranged at the front end of the proximity switch mounting plate; a narrow and long slot is arranged in the middle of the proximity switch mounting plate, and the proximity switch is installed at any position of the slot through a locking nut.

[0015] Beneficial effects: In the three-point dynamic balance detection and positioning system provided by the present invention, dynamic balance is detected by three points, with high accuracy and easy adjustment. Three points determine a unique surface, so the three equally divided weighing sensors can stably withstand the pressure from the upper part. And the horizontality is easy to adjust. The data processing module can automatically calculate the position where the counterweight is required based on the origin and speed data through the proximity switch, and can automatically calculate the required counterweight in conjunction with the weighing sensor without manual participation in the calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view schematic diagram of the detection platform in the three-point dynamic balance detection and positioning system of the present invention.

[0017] Figure 2 It is a top view schematic diagram of the detection platform in the three-point dynamic balance detection and positioning system of the present invention.

[0018] Figure 3 Bottom view of the circular mounting plate.

[0019] Figure 4 This is the human-machine interface diagram that displays the current data in the data processing module.

[0020] Figure 5 This is the human-machine interface diagram that displays historical data in the data processing module.

[0021] Figure 6 It is a side view of the combination of the upper drive and the device. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The examples described are only part of the embodiments of the invention, not all of the embodiments.

[0023] This embodiment provides a three-point dynamic balance detection and positioning system for detecting and positioning the dynamic balance driven on a crystal furnace. The system includes a detection platform and a data processing module.

[0024] Please combine Figure 1 , 2As shown in , 3, and 6, the detection platform includes a circular mounting plate 11 for carrying the upper drive, three proximity switch support rods 4 extending upward from the circular mounting plate 11, a proximity switch 1 located on the proximity switch support rod 4, an upper drive positioning buckle 6 located on the circular mounting plate 11, three fixed bases 9 supporting the circular mounting plate 11, and a weighing sensor 10 located between the three fixed bases 9 and the circular mounting plate 11. The weighing sensor 10, the fixed base 9, and the circular mounting plate 11 are separable. The three proximity switch support rods 4 are evenly arranged on the circumference at an angle of 120° to each other and at the same distance from the center of the circle. Each weighing sensor 10 is located directly below a corresponding proximity switch support rod 4. The three proximity switches 1 are respectively a first proximity switch A, a second proximity switch B, and a third proximity switch C. A horizontally extending proximity switch mounting plate 3 is installed on the proximity switch support rod 4, and a proximity switch 1 is arranged at the front end of the proximity switch mounting plate 3. A narrow slot is arranged in the middle of the proximity switch mounting plate 3, and the proximity switch 1 is installed at any position of the slot through a locking nut 2, so that the proximity switch 1 can be adjusted to reach a position of a metal sensing seat close to the bottom of the upper drive.

[0025] During installation, place the fixed base 9 of the upper drive 20 on the platform, and place the multifunctional circular plate on the fixed base 9 through the weighing positioning hole 17. Observe the three levels 14, and adjust the locking nut 7 of the fixed base 9 to make the platform surface level. Place the upper drive device on the multifunctional circular mounting plate 11, and confirm that the three position scales are covered with the same length through the position scale 15, so as to ensure that the upper drive is in the center of the circular mounting plate 11. Place the three upper drive fixing buckles 6 on the bottom plate of the upper drive through the slide groove 13, and fix the upper drive base 22 on the multifunctional circular mounting plate 11 through three locking nuts 7 to prevent the upper drive from deviating from the center of the multifunctional circular mounting plate 11 and tipping over during rotation. Use three sets of locking nuts 5 to roughly adjust the top of the proximity switch support rod 4 to the position of the metal sensing seat close to the bottom of the upper drive. Adjust the position of the proximity switch 1 on the proximity switch adjustment plate 3 so that the proximity switch can stably sense the metal sensing seat at the bottom of the upper drive, and fix the proximity switch through the locking nut 2.

[0026] The device is characterized in that the weighing sensor 10 and the fixed base 9 can be separated from the multifunctional circular plate 11, which saves space and is convenient for transportation and storage. When the weighing sensor point A is defined as 0 degrees, B is 120 degrees, and C is 240 degrees. The angles of the three proximity switch chutes are 60 degrees, 180 degrees, and 300 degrees respectively. The upper drive's own rotation system is used, and no additional rotation drive accessories are required.

[0027] Turn the upper drive device, and when the speed displayed on the panel stabilizes, press the start switch. When the metal induction seat 21 at the bottom of the upper drive 20 triggers the first proximity switch A for the first time, the data processing module of the system automatically enters the calculation. Figure 3 , Figure 4 The display screen can know the current weight and historical weight of each sensor. The weight and position 23 of the counterweight block to be added are automatically calculated through the three weighing sensors 10 at ABC and the current angle, and fixed to the upper drive by bolts 24 to maintain the total amount of each angle consistent.

[0028] The specific means of entering into calculations through the data processing module are described as follows.

[0029] When the drive on the rotating crystal furnace is turned, when the metal induction seat triggers the first proximity switch for the first time, the data processing module automatically enters the calculation and obtains the current weight x1, x2, x3 obtained by each weighing sensor. After multiple rotations, it can be known that the values ​​obtained by the three weighing sensors are the smallest at t1, t2, and t3 seconds, and the difference between the three times t1, t2, and t3 is a / 3 seconds; the first contact switch is set as the origin, so when the weight x1 is the smallest, the current angle b is calculated through t1, that is, b=360 / a*t1; when the first contact switch is triggered, the drive rotation on the crystal furnace is stopped, that is, the current position is the origin; the position of the required counterweight block is located through the angle scale line on the multifunctional circular mounting plate, and the counterweight block is installed;

[0030] According to the lever principle: power × power arm = resistance × resistance arm, the weight of the counterweight is calculated based on: power = resistance × resistance arm / power arm.

Claims

1. A three-point dynamic balance detection and positioning system, used to detect and position the dynamic balance driven by a crystal furnace, characterized in that: Including detection platform and data processing module; The detection platform includes a circular mounting plate for carrying the upper drive, three proximity switch support rods extending upward from the circular mounting plate, a proximity switch located on the proximity switch support rod, an upper drive positioning buckle located on the circular mounting plate, three fixed bases supporting the circular mounting plate, and a weighing sensor located between the three fixed bases and the circular mounting plate; the three proximity switch support rods are evenly arranged on the circumference at an angle of 120° to each other and at the same distance from the center of the circle, and each weighing sensor is located directly below a corresponding proximity switch support rod; the three proximity switches are respectively a first proximity switch, a second proximity switch, and a third proximity switch; The upper drive positioning buckle is used to fix the crystal furnace upper drive centering installation on the circular mounting plate, so that each proximity switch is located directly below the metal sensing seat at the bottom; There are angle scale lines around the outer edge of the multifunctional circular mounting plate; When the drive on the rotating crystal furnace is triggered for the first time by the metal induction seat, the data processing module automatically enters the calculation to obtain the current weight x1, x2, x3 obtained by each weighing sensor. After multiple rotations, it can be known that the values ​​obtained by the three weighing sensors are the smallest at t1, t2, and t3 seconds, and the difference between the three times t1, t2, and t3 is a / 3 seconds, where a is the time for one rotation; the first contact switch is set as the origin, so when the weight x1 is the smallest, the current angle b is calculated through t1, that is, b=360 / a*t1; when the first contact switch is triggered, the drive rotation on the crystal furnace is stopped, that is, the current position is the origin; the position of the required counterweight block is located through the angle scale line on the multifunctional circular mounting plate, and the counterweight block is installed; According to the lever principle: power × power arm = resistance × resistance arm, the weight of the counterweight is calculated based on: power = resistance × resistance arm / power arm.

2. The three-point dynamic balance detection and positioning system according to claim 1, characterized in that: The weighing sensor, the fixed base and the circular mounting plate are separable.

3. The three-point dynamic balance detection and positioning system according to claim 1 or 2, characterized in that: The circular mounting plate is provided with three levels, and the platform surface is kept in a horizontal state by adjusting the locking nuts of the fixed base.

4. The three-point dynamic balance detection and positioning system according to claim 3, characterized in that: The circular mounting plate is provided with a centripetal slide groove; three upper drive fixing buckles are placed on the bottom plate of the upper drive through the slide groove, and the upper drive is fixed on the multifunctional circular mounting plate through three locking nuts.

5. The three-point dynamic balance detection and positioning system according to claim 4, characterized in that: A transversely extending proximity switch mounting plate is installed on the proximity switch support rod, and a proximity switch is arranged at the front end of the proximity switch mounting plate; a narrow and long slot is arranged in the middle of the proximity switch mounting plate, and the proximity switch is installed at any position of the slot through a locking nut.

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