A kind of polycrystal ingot furnace heat insulation cage lifting transmission error synchronous compensation device

Abstract

The present application belongs to the technical field of polycrystalline ingot furnace silicon ingot casting, and particularly relates to a heat insulation cage lifting transmission error synchronous compensation device of a polycrystalline ingot furnace, which comprises a top cover, a total assembly unit arranged on the side of the top cover close to the ground, a monitoring unit arranged on the side of the top cover away from the ground, a dynamic compensation unit arranged in the monitoring unit, and a clamping unit arranged on the side of the dynamic compensation unit away from the ground. The plunger ring piece continuously extrudes the sealing angle ring and compresses the return spring under the hydraulic drive. According to the actual offset of each point lifting rod, the flexible clamping interaction force between the clamping rod and the monitoring ring bin is dynamically adapted and changed. Differentiated radial clamping force is applied to the offset side lifting rod, the axis of the inclined lifting rod is gradually calibrated to be parallel to the direction of gravity, the dynamically adapted radial clamping force is redistributed, the positive feedback vicious cycle of unbalanced load, asynchronous lifting and aggravated unbalanced load is broken, and the normal contact force and frictional resistance between each point sliding block and the guide rail are restored to be balanced.

Description

Technical Field

[0001] This invention belongs to the field of polycrystalline ingot casting furnace silicon ingot technology, specifically relating to a synchronous compensation device for the lifting transmission error of the heat insulation cage in a polycrystalline ingot casting furnace. Background Technology

[0002] Polycrystalline silicon ingot furnace: The core thermal equipment used to prepare polycrystalline silicon ingots. It adopts the directional solidification method and goes through four process stages in sequence: heating and preheating, silicon melting, crystal growth and annealing and cooling. The directional solidification and crystallization of silicon melt is achieved by precisely controlling the longitudinal temperature gradient in the furnace. As a key component of the hot zone system of the ingot casting furnace, the heat insulation cage adjusts the overlap gap between itself and the bottom heat insulation layer through lifting and lowering movements during the ingot casting process, thereby controlling the dynamic changes of the hot zone gradient. It is the core execution component for realizing the directional solidification process. In the prior art, the heat insulation cage is usually suspended from the top frame of the furnace body by multiple rods evenly distributed along its circumference. The upper end of each rod is connected to a corresponding lifting slider. The lifting slider slides along a pre-set vertical guide rail on the furnace body. The drive mechanism drives each slider to rise and fall synchronously, thereby driving the heat insulation cage to complete the lifting and lowering action as a whole. In an ideal state, each rod is subjected to uniform force, the center of gravity of the heat insulation cage is located at the geometric center, and the lifting slider at each point is only subjected to the vertical guiding constraint force between itself and the guide rail, resulting in smooth movement and good synchronization.

[0003] However, in actual production, the insulation cage is under high temperature and repeated thermal cycling conditions for a long time. Its top insulation board, side plate and internal graphite connectors inevitably undergo thermal deformation, oxidation erosion and material creep. In addition, the aging rate of each part is different, which causes the overall mass distribution of the insulation cage to gradually deviate from the initial design state and the center of gravity to shift irreversibly laterally. The shift in the center of gravity directly changes the load distribution of each hanger: the axial tensile force on the hanger on the offset side increases significantly, while the load on the hanger on the side farther from the offset center of gravity decreases accordingly; after the center of gravity deviates from the geometric center, the line of action of the gravity of the insulation cage no longer passes through the center of symmetry of the suspension points of each hanger, thereby generating an additional bending moment at the connection between the hanger and the insulation cage. The bending moment is transmitted along the hanger to the lifting slider, which is converted into the lateral clamping force of the slider on the guide rail; The lateral clamping force on the off-center load side slider increases sharply, which significantly increases the normal contact force and frictional resistance between the slider and the guide rail. Meanwhile, the slider on the light load side becomes loose due to insufficient clamping force. The asymmetry of the above-mentioned force states directly leads to a huge difference in the motion resistance of the boom at each point during the lifting process. The drive mechanism has difficulty maintaining the synchronous displacement of each slider. The heat insulation cage tilts and twists during the lifting process. The asynchronous lifting further aggravates the tilt of the heat insulation cage, causing the center of gravity offset to continue to increase, forming a positive feedback loop of off-center load, asynchronous lifting, and aggravated off-center load. The final consequences are: accelerated wear and even jamming of the off-center side slider and guide rail; bending fatigue deformation of the lifting rod due to alternating lateral forces; loss of accuracy in lifting the insulation cage into position leading to uncontrolled thermal gradient, which seriously affects the crystallization quality and yield of polycrystalline silicon ingots. In extreme cases, it may even cause structural failure of the equipment, resulting in unplanned furnace shutdowns and significant economic losses. Summary of the Invention

[0004] To solve the above problems, the present invention adopts the following technical solution: a synchronous compensation device for lifting transmission error of polycrystalline ingot furnace heat insulation cage, including a top cover, an assembly unit is provided on the side of the top cover near the ground, a monitoring unit is provided on the side of the top cover away from the ground, a dynamic compensation unit is provided inside the monitoring unit, and a clamping unit is provided on the side of the dynamic compensation unit away from the ground. The dynamic clamping unit includes: T-shaped rods, three in a group, for a total of three groups, are evenly distributed circumferentially on the side of the top cover away from the ground; The driven gear is snapped onto the outer wall of the T-shaped rod at one end near the axis of the top cover. The redundant position cylinder is positioned opposite to the T-shaped connecting rod at the end away from the top cover axis; Angle tube is snapped onto the outer wall of the redundant position cylinder, and the inner wall of the other end of the angle tube is rotatably fitted with the outer wall of the T-shaped rod. The nested tube is slidably snapped onto the inner wall of the corner tube near the axis of the top cover; in addition, the inner wall of the nested tube has a serpentine groove. The corner sleeve is snapped onto the outer wall of the T-shaped rod near the redundant sleeve end; Angle rods are snapped into the middle of the outer wall of the angle sleeve, and the angle rods are matched with the serpentine grooves on the inner wall of the nested tube. The end tube is snapped onto the inner wall of the end of the corner tube closest to the redundant cylinder; The movable ring is installed in the middle of the inner wall of the end tube via a sliding snap-fit.

[0005] Preferably, the end tube near the top cover axis is fitted with a telescopic spring assembly that is fitted with a movable ring in a through-type sliding snap-fit. The outer wall of the end tube facing away from the ground is fitted with a movable spring column that extends out of the corner tube in a through-type sliding snap-fit. The movable spring column and the telescopic spring assembly cooperate with each other. A positive electrode ring is snap-fitted in the middle of the outer wall of the movable spring column. A negative electrode ring that matches the positive electrode ring is embedded in the outer wall of one side of the corner tube. A cross shaft is snap-fitted in the outer wall of the end of the movable spring column that extends out of the corner tube.

[0006] Preferably, the T-shaped connecting rod has symmetrically distributed corner posts on the side facing away from the ground, meaning that the position and number of each of the two symmetrically distributed corner posts correspond one-to-one with the position of a single T-shaped connecting rod. An oil supply pipe is snapped onto the outer wall of the corner post near the top cover axis, and the axis of the oil supply pipe is perpendicular to the top cover axis. A connector sleeve is snapped onto the other corner post at the end of the oil supply pipe away from the top cover axis. An electric telescopic rod is snapped onto the end of the connector sleeve away from the top cover via a motor mount, and the movable end of the electric telescopic rod extends into… Inside the connector tube, a branch pipe is snapped into the movable end of the electric telescopic rod. The inner wall of the branch pipe has a serrated groove, and the inner wall of the branch pipe near the electric telescopic rod has a straight groove that communicates with the serrated groove. A lifting ring is rotatably installed on the inner wall of the connector tube near the electric telescopic rod. A cam is snapped into the end of the lifting ring away from the electric telescopic rod, and the cam is assembled with the branch pipe through a one-way roller clutch. A torsion spring sleeved on the outer wall of the movable end of the electric telescopic rod is snapped into the opposite surfaces of the inner wall of the branch pipe and the connector tube near the electric telescopic rod.

[0007] Preferably, a sealing ring is slidably snapped onto the inner wall of the oil delivery pipe near the insertion cylinder, a positioning ring is snapped onto the inner wall of the oil delivery pipe away from the insertion cylinder, a double-headed spring piston is snapped onto the sealing ring shaft in a through-type manner and is snapped onto the positioning ring, and a one-way oil outlet valve is inserted and installed on the outer wall of the oil delivery pipe away from the insertion cylinder.

[0008] Preferably, the assembly unit includes: The upper furnace body is snapped onto the end face of the top cover near the ground. The lower furnace body is snapped onto the upper furnace body at the end opposite the top cover; The triangular bracket is connected to the ground by bolts, and the triangular bracket and the top cover are coaxially arranged. The furnace heavy load lifting mechanism is jointly and interlocked between the upper furnace body, the lower furnace body, and the triangular support; The suspension rod seat is installed on the end face of the top cover in a circumferentially uniform plug-in snap-fit ​​manner. The triangular suspension connecting plate is snapped into the middle position of the outer wall of the hanger seat; The bearing is snap-fitted onto the end of the boom seat that is away from the ground. The linear guide rail is snapped into the middle position of the inner wall of the vertical section of the triangular suspension connecting plate; The lead screw is rotatably mounted in the middle of the inner wall of the linear guide.

[0009] Preferably, the inner wall of the linear guide rail is slidably fitted with a lifting slider that is threadedly fitted with the lead screw. An angle plate is fitted to the outer wall of the lifting slider near the top cover axis. A hanging rod is fitted to the horizontal section of the angle plate near the top cover, and the hanging rod is slidably fitted to the hanging rod seat. A metal bellows is fitted onto the outer wall of the hanging rod. A connecting flange is fitted to the end of the metal bellows near the ground. All the connecting flanges near the ground are fitted with a heat insulation cage, one in number. The other end of the metal bellows is connected to the inner wall of the top cover via a flange. A heat insulation plate is fitted to the inner wall of the upper furnace body near the top cover. Guide bushings are evenly fitted to the end face of the heat insulation plate, and the number and position of the guide bushings correspond one-to-one with the hanging rods. Furthermore, the guide bushings are slidably fitted to the metal bellows. A crucible is fitted to the inner wall of the heat insulation cage near the ground.

[0010] Preferably, the monitoring unit includes: The base is snap-fitted onto the outer wall of the bearing; The monitoring ring compartment is snapped onto the base at the end opposite to the top cover; in addition, T-shaped rods are evenly distributed circumferentially on the end face of the monitoring ring compartment, and are assembled with the monitoring ring compartment in a plug-in rotating fit. The monitoring cylinders, numbered three, are evenly inserted into the inner wall of the monitoring ring chamber near the base in a circumferential manner; The front sealing plate is slidably snapped onto the inner wall of the monitoring cylinder at the end closest to the axis of the monitoring ring chamber; The rear sealing plate is snapped onto the inner wall of the end of the monitoring cylinder furthest from the axis of the monitoring ring chamber; A single-headed firing pin is installed in the middle of the front package piece in a through-hole insertion manner, and the single-headed firing pin is slidably snapped together with the rear package piece; A telescopic spring is snapped between the opposing surfaces of the front and rear encapsulation plates, and the telescopic spring is sleeved on the outer wall of the single-headed firing pin. The co-position tube is rotatably installed at the end of the monitoring cylinder away from the axis of the monitoring ring chamber, and the inner wall of the co-position tube has a snake groove.

[0011] Preferably, a collar is snapped onto the outer wall of the single-headed striking pin at the end away from the top cover axis. A corresponding rod adapted to the serpentine groove on the inner wall of the corresponding tube is snapped onto the outer wall of the collar. A compensation ring is snapped onto the outer wall of the corresponding tube at the end away from the monitoring cylinder. A compensation rod snapped onto the outer wall of the monitoring ring at the end away from the monitoring cylinder is rotatably fitted with the same as the outer wall of the monitoring ring compartment. A bridging ring is snapped onto the outer wall of the monitoring cylinder near the corresponding tube. A drive gear is rotatably fitted onto the outer wall of the bridging ring near the compensation ring. A gear ring is snapped onto the inner wall of the drive gear. A shoulder ring is snapped onto the middle position of the outer wall of the corresponding tube. A wedge plate is snapped onto the outer wall of the shoulder ring through the gap.

[0012] Preferably, the clamping unit includes: The clamping rods are arranged in groups of three, and are evenly inserted around the monitoring ring compartment at the end away from the top cover; in addition, the clamping rods are slidably assembled with the monitoring ring compartment. The sealing corner ring is slidably snapped onto the outer wall of the end of the clamping rod opposite to the axis of the monitoring ring chamber, and the sealing corner ring is located inside the monitoring ring chamber; The return spring is snapped between the sealing corner ring and the inner wall of the monitoring ring chamber, and the return spring is also sleeved on the outer wall of the clamping rod; The clamping plate is snapped onto the end of the clamping rod near the axis of the monitoring ring chamber. The ball bearings are uniformly rolled in an array on the inner wall of the clamping plate near the axis of the monitoring ring chamber. The protective cylinders are numbered and positioned one-to-one with the clamping rods. In addition, the protective cylinders are located inside the monitoring ring chamber and are snapped into the inner wall of the monitoring ring chamber near the clamping plate. The oil inlet check valve is installed in the middle of the protective cylinder at the end away from the clamp plate by a plug-in snap-fit. The plunger ring is slidably snapped onto the inner wall of the protective cylinder at the end away from the monitoring ring chamber by a sealing film, and the plunger ring is snapped onto the sealing angle ring by a connecting rod.

[0013] To suppress the tilting of the suspension rod due to the offset of the center of gravity of the heat insulation cage in a polycrystalline ingot furnace, the aforementioned synchronous compensation device for the lifting transmission error of the heat insulation cage in a polycrystalline ingot furnace is used to provide adaptive adjustment of powder feeding. The specific steps are as follows: S1: When the load on the boom is uneven at different points, it directly manifests as an imbalance of the relative forces on one side between the boom and the lifting slider, or even the boom axis tilting relative to gravity. At this time, the single-headed striker, which is tangent to the boom in the initial state, is at three points to dynamically sense the axial offset of the boom in real time with full circumferential coverage. When the boom tilts by any amount, the single-headed firing pin, under the reverse force of the boom, drives the front sealing plate to squeeze the telescopic spring and generate a certain degree of axial displacement. Then, through the mutual cooperation between the corresponding rod and the snake groove on the inner wall of the corresponding tube, the axial displacement of the single-headed firing pin is explicitly extended and transformed into the rotational variable of the corresponding tube. Under the synchronous action of the co-position tube, the shoulder ring controls the wedge plate to deflect at a predetermined angle. The wedge plate engages with the gear ring, which in turn drives the drive gear to mesh with the driven gear under the support of the bridging ring. By using the meshing idle angle between the wedge plate and the gear ring, minor external vibrations are filtered out, meaning the dynamic compensation unit is not triggered. Instead, the return spring on the outer wall of the clamping rod is used for buffering and degradation, preventing the return spring from providing overload flexible elastic support to the clamping plate prematurely and improving the service life of the return spring. S2: When the crane is continuously tilted for a certain period of time or maintains a certain predetermined tilt state, the single-headed striker and the boom maintain a certain interaction depth, that is, the single-headed striker overcomes the elastic restoring force of the telescopic spring and stays in the current position for a certain period of time. Prior to this, the drive gear drives the driven gear to rotate by a predetermined angle, and the T-shaped linkage synchronously drives the corner rod to rotate. Through the relative movement between the corner rod and the snake groove on the inner wall of the nested tube, the rotational variable of the T-shaped linkage is converted into the horizontal displacement of the nested tube along the axis of the corner tube. After that, the nested tube squeezes the telescopic spring assembly to move towards the redundant cylinder. Under the guidance of the inclined surface of the telescopic spring assembly, the movable spring column moves a predetermined distance perpendicular to the axis of the end tube to the outside of the corner tube (the specific distance is determined by the inclination of the hanger rod). The time between the positive and negative electrode rings is used as a criterion to determine whether the deviation of the suspension rod is a temporary deviation caused by external nonlinear vibration or a stable deviation caused by the imbalance of forces on the insulation cage. When non-vibration factors are determined, the electric telescopic rod controls the branch pipe to move towards the movable spring column. The cross shaft and the snake groove on the inner wall of the branch pipe move relative to each other. The branch pipe drives the cam to rotate in one direction through the one-way roller clutch. The cam guides and squeezes the double-headed spring piston, forcing the oil inside the oil pipe to be pumped into the oil inlet check valve through the one-way oil outlet valve and the external hose. S3: As the distance between the plunger ring and the protective cylinder continues to increase, the plunger ring squeezes the sealing corner ring and compresses the return spring, dynamically adapting and changing the flexible clamping interaction force between the clamping rod and the monitoring ring chamber, specifically distributing the radial clamping force on the offset side of the boom, recalibrating the parallelism of the boom axis with the direction of gravity, stabilizing the load dispersion under long-term action of the heat insulation cage, reducing the degree of failure of the assembly gap between the boom and the lifting slider, and improving the lifting synchronization between booms at different points; The present invention has the following beneficial effects: 1. This invention uses single-headed strikers initially tangent to the outer wall of the boom at three points along its circumference to continuously monitor the axial offset of the boom. It converts minute tilts in any direction of the boom into axial displacement responses of the strikers. Through the helical coupling relationship between the corresponding rod and the inner wall of the corresponding tube, the linear displacement is explicitly amplified into the rotational variable of the corresponding tube, significantly amplifying the discernibility of minute tilts. This allows the system to capture signals when the boom tilt is still in its early stages, providing a sufficient response time window for subsequent compensation actions. It effectively avoids the cumulative deterioration of off-center loads caused by sensing lag, achieving real-time dynamic sensing and early warning of the boom tilt state in the entire circumference.

[0014] 2. The present invention uses the preset meshing idle angle between the wedge plate and the gear ring to form a mechanical threshold filtering link. When the boom is subjected to transient slight displacement due to external nonlinear excitation such as furnace operation vibration and airflow disturbance, the displacement of the striker is insufficient to overcome the idle angle, the compensation transmission chain does not start, and the buffer degradation is completed only by the elastic restoring force of the return spring on the outer wall of the clamping rod. Meanwhile, through the rigid engagement between the wedge plate and the gear ring, in the face of external vibration scenarios that exceed the meshing backlash angle, the single-head striker resets after the instantaneous vibration ends. At this time, the dynamic compensation unit does not operate. Therefore, regardless of the form of vibration, it can effectively filter out and prevent false triggering. This distinguishes transient vibration from steady-state tilt caused by the offset of the insulation cage's center of gravity, avoiding frequent malfunctions of the compensation mechanism. It prevents the return spring from prematurely fatigued due to overloaded flexible support and ensures that the compensation action is precisely triggered only under actual off-center load conditions, significantly improving the reliability of the system and the service life of the return spring.

[0015] 3. This invention uses the duration of the disconnection between the positive and negative electrode rings as a criterion to effectively distinguish between temporary vibration deviation of the boom and stable center of gravity shift caused by stress imbalance in the insulation cage. Only after a steady-state off-center load is confirmed to be non-vibrational is the electric telescopic boom drive cam-double-headed spring piston hydraulic pump circuit is activated. Through the directional guidance of the one-way oil outlet valve and the one-way oil inlet valve, the oil is precisely pumped into the target compensation chamber, achieving on-demand quantitative output of compensation force. This timing discrimination mechanism ensures that hydraulic compensation only acts on the actual off-center load condition, avoiding interference of the compensation force on normal lifting and lowering movements. At the same time, the one-way valve structure ensures the irreversibility of the compensation oil circuit, preventing backflow of compensation pressure due to system vibration or temperature fluctuations, and maintaining long-term stability of the compensation state.

[0016] 4. This invention uses a plunger ring to continuously squeeze the sealing corner ring and compress the return spring under hydraulic drive. Based on the actual offset of the boom at each point, it dynamically adapts and changes the flexible clamping interaction force between the clamping rod and the monitoring ring chamber, and applies differentiated radial clamping force to the boom on the offset side, gradually calibrating the axis of the tilted boom to be parallel to the direction of gravity. The above-mentioned adaptive force distribution mechanism directly offsets the additional bending moment generated at the connection between the boom and the lifting slider due to the center of gravity offset, eliminates the conversion path of bending moment to the lateral clamping force of the slider, and restores the normal contact force and frictional resistance between the slider and the guide rail at each point to balance. It completely breaks the positive feedback deterioration cycle of uneven load, asynchronous lifting and aggravating uneven load, dynamically adapts and redistributes the radial clamping force, and accurately reconstructs the parallelism between the boom axis and the direction of gravity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is an appendix to the present invention. Figure 1 Top view of the structure.

[0019] Figure 3 This is an appendix to the present invention. Figure 1 A 3D view of the internal structure.

[0020] Figure 4 This is an appendix to the present invention. Figure 3 A magnified schematic diagram of the local structure at point A in the middle.

[0021] Figure 5 This is an appendix to the present invention. Figure 3 Enlarged schematic diagram of the local structure at point B.

[0022] Figure 6 This is a cross-sectional view of the internal structure of the monitoring ring chamber of this invention.

[0023] Figure 7 This is a plan view of the monitoring unit in this invention.

[0024] Figure 8 This is a plan view of the dynamic compensation unit of the present invention.

[0025] Figure 9 This is an appendix to the present invention. Figure 8 A magnified schematic diagram of the local structure at point C.

[0026] Figure 10 This is another plan view of the dynamic compensation unit of the present invention.

[0027] Figure 11 This is a cross-sectional view of the three-dimensional structure of the clamping unit in this invention.

[0028] The diagram labels are: 1. Top cover; 2. Assembly unit; 3. Monitoring unit; 4. Dynamic compensation unit; 5. Clamping unit; 21. Upper furnace body; 22. Lower furnace body; 23. Triangular support; 24. Furnace heavy load lifting mechanism; 25. Hanger rod seat; 26. Triangular suspension connecting plate; 27. Bearing; 28. Linear guide rail; 29. ​​Lead screw; 211. Lifting slider; 212. Corner joint plate; 213. Hanging rod; 214. Metal bellows; 215. Connecting flange; 216. Insulation cage; 217. Insulation board; 218. Guide bushing; 219. Crucible; 31. Base; 32. Monitoring ring chamber; 33. Monitoring cylinder; 34. Front encapsulation plate; 35. Rear encapsulation plate; 36. Single-headed firing pin; 37. Telescopic spring; 38. Corresponding tube; 311. Collar; 312. Corresponding rod; 313. Compensating ring; 314. Compensating rod; 315. Bridging ring; 316. Drive gear; 317. Gear ring; 318. Shoulder ring; 319. Wedge plate; 41. T-shaped connecting rod; 42. Driven gear; 43. Redundant sleeve; 44. Angle tube; 45. Nested tube; 46. Angle sleeve; 47. Angle rod; 48. End tube; 49. Movable ring; 411. Telescopic spring assembly; 412. Movable spring column; 413. Positive electrode ring; 414. Negative electrode ring; 415. Cross shaft; 421. Angle post; 422. Oil pipeline; 423. Connector sleeve; 424. Electric telescopic rod; 425. Branch pipe; 426. Lifting ring; 427. Cam; 428. Torsion spring; 431. Sealing ring; 432. Positioning ring; 433. Double-ended spring piston; 434. One-way oil outlet valve; 51. Clamping rod; 52. Sealing angle ring; 53. Return spring; 54. Clamping plate; 55. Ball bearing; 56. Protective sleeve; 57. Oil inlet check valve; 58. Plunger ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] It should be noted that the terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] Reference Figure 1 , Figure 3 and Figure 6 It is known that a synchronous compensation device for the lifting transmission error of a polycrystalline ingot furnace insulation cage includes a top cover 1, an assembly unit 2 is provided on the side of the top cover 1 near the ground, a monitoring unit 3 is provided on the side of the top cover 1 away from the ground, a dynamic compensation unit 4 is provided inside the monitoring unit 3, and a clamping unit 5 is provided on the side of the dynamic compensation unit 4 away from the ground. Reference Figure 1 , Figure 2 and Figure 3 It can be seen that the assembly unit 2 includes: an upper furnace body 21, which is snapped onto the end face of the top cover 1 near the ground; a lower furnace body 22, which is snapped onto the end of the upper furnace body 21 away from the top cover 1; a triangular bracket 23, which is connected to the ground by bolts and is coaxially arranged with the top cover 1; a furnace heavy load lifting mechanism 24, which is snapped onto the upper furnace body 21, the lower furnace body 22 and the triangular bracket 23; a hanger seat 25, which is snapped onto the end face of the top cover 1 in a circumferentially uniform plug-in manner; a triangular suspension connecting plate 26, which is snapped onto the middle position of the outer wall of the hanger seat 25; a bearing 27, which is snapped onto the end of the hanger seat 25 away from the ground; a linear guide rail 28, which is snapped onto the middle position of the inner wall of the vertical section of the triangular suspension connecting plate 26; and a lead screw 29, which is rotatably fitted onto the middle position of the inner wall of the linear guide rail 28. Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 It can be seen that a lifting slider 211, which is threadedly fitted to the lead screw 29, is slidably snapped onto the inner wall of the linear guide rail 28. An angle plate 212 is snapped onto the outer wall of the lifting slider 211 near the axis of the top cover 1. A hanger rod 213 is snapped onto the horizontal section of the angle plate 212 near the top cover 1, and the hanger rod 213 is slidably fitted with the hanger rod seat 25. A metal bellows 214 is sleeved on the outer wall of the hanger rod 213. A connecting flange 215 is snapped onto the end of the metal bellows 214 near the ground. All connecting flanges 215 are close to the ground. One heat insulation cage 216 is installed at one end, and the other end of the metal corrugated pipe 214 is connected to the inner wall of the top cover 1 through a flange. A heat insulation plate 217 is installed on the inner wall of the upper furnace body 21 near the top cover 1. Guide bushings 218 are evenly installed on the end face of the heat insulation plate 217, and the number and position of the guide bushings 218 correspond one-to-one with the hanging rods 213. In addition, the guide bushings 218 are slidably assembled with the metal corrugated pipe 214. A crucible 219 is installed on the inner wall of the heat insulation cage 216 near the ground.

[0033] Simplified steps for preparing polycrystalline silicon ingots: Step 1: Charging and Furnace Vacuuming The furnace body 22 moves downward under the drive of the furnace heavy load lifting mechanism 24, opening the furnace chamber; the operator fills the crucible 219 with industrial virgin silicon material. After loading is completed, the heavy-duty lifting mechanism drives the lower furnace body 22 to close upward, and the upper furnace body 21 and the lower furnace body 22 are sealed together to form a closed furnace chamber. At this time, the lifting slider 211 is at the initial reference position, and the heat insulation cage 216 remains at a high position; All booms 213 are in a theoretically vertical state. Monitoring unit 3 and clamping unit 5 enter standby monitoring mode and continuously collect the axis offset data of each boom 213. Start the vacuum unit (not shown in the figure) to continuously extract air from the furnace and reduce the oxygen content in the furnace; After the preset vacuum level is reached, the vacuum valve is closed, and high-purity argon gas is introduced into the furnace as a protective atmosphere. Multiple vacuuming and argon purging processes are used to control oxygen and nitrogen impurities in the furnace within the allowable range of the process, thus preventing oxidation contamination of the silicon material at high temperatures. Step Two: Preheating Stage The graphite heater (not shown in the figure) is powered on and started, and the thermocouple collects the temperature inside the furnace in real time; The temperature inside the furnace gradually rises, slowly preheating the silicon material to eliminate residual stress inside the silicon material, while slowly drying the water vapor adsorbed on the surface of the silicon material. During the preheating stage, the insulation cage 216 maintains a fixed height, and the insulation cage 216 and the bottom insulation layer maintain a fixed overlap gap to establish the initial temperature field. Step 3: Silicon Material Melting Stage As the heating power is continuously increased, the furnace temperature rises to the silicon melting point, and the solid industrial silicon in crucible 219 gradually melts into molten silicon. During the melting stage, the position of the insulation cage 216 remains unchanged to maintain a stable radial insulation environment; As the furnace continues to operate at high temperatures for a long time, the insulation felt and graphite components at the top of the insulation cage 216 gradually oxidize and undergo thermal creep. The mass distribution of the insulation cage 216 changes slowly, and the center of gravity shifts laterally, which induces the hangers 213 to tilt and the load on each hanger 213 to be uneven. Step 4: Directional solidification stage: After the silicon material is completely melted into silicon melt, the temperature control system reduces the heating power, and at the same time the furnace body lifting mechanism drives the heat insulation cage 216 to move slowly downward according to the preset process curve. After the heat insulation cage 216 moves down, the overlap gap between the heat insulation cage 216 and the bottom heat insulation layer gradually increases, the heat dissipation rate at the bottom of the crucible 219 increases, and a vertical temperature gradient from top to bottom is formed inside the silicon melt. The silicon melt gradually solidifies from the bottom of crucible 219, and the solid-liquid interface smoothly advances from the bottom to the top. Silicon atoms nucleate and grow in an orderly manner along the temperature gradient, forming columnar polycrystalline silicon crystals. The solid-liquid interface morphology at this stage directly determines the dislocation density and grain boundary quality of the silicon ingot, which is a key factor in determining the quality of the silicon ingot. Step 5: Annealing and Cooling Stage Once crystal growth is complete, the entire silicon melt solidifies into a polycrystalline silicon ingot. The control system (external PLC control) adjusts the heating power to enter the high-temperature annealing stage, slowly eliminating the residual thermal stress from solidification inside the silicon ingot; After annealing, the heating power is gradually reduced, and the silicon ingot is cooled down at a constant speed to the safe tapping temperature under the protective atmosphere of argon. During the cooling process, the 216 graphite component of the heat insulation cage is gradually cooled from the high temperature, and reverse thermal contraction occurs, causing the center of gravity to change again. Step Six: Open the furnace and remove the silicon ingot: Once the furnace temperature drops to a safe level, the argon gas supply is stopped, and the furnace is depressurized. The furnace body 22 is moved down by the heavy load lifting mechanism 24, and the operator takes out the shaped polycrystalline silicon ingot along with the crucible 219 to complete a single ingot production cycle. Clean the residue from crucible 219, refill with silicon material, and proceed to the next production cycle.

[0034] Reference Figure 3 , Figure 6 and Figure 7It can be seen that the monitoring unit 3 includes: a base 31, which is snapped onto the outer wall of the bearing 27; a monitoring ring chamber 32, which is snapped onto the end of the base 31 away from the top cover 1; in addition, T-shaped rods 41 are evenly distributed circumferentially on the end face of the monitoring ring chamber 32 and are rotatably fitted with the monitoring ring chamber 32 in a plug-in manner; three monitoring cylinders 33 are evenly inserted into the inner wall of the monitoring ring chamber 32 near the base 31; and a front sealing plate 34 is slidably snapped onto the inner wall of the monitoring cylinder 33 near the axis of the monitoring ring chamber 32. The rear encapsulation plate 35 is snap-fitted onto the inner wall of the end of the monitoring cylinder 33 away from the axis of the monitoring ring chamber 32; the single-headed striker 36 is inserted through and installed in the middle of the front encapsulation plate 34, and the single-headed striker 36 is slidably snap-fitted onto the rear encapsulation plate 35; the telescopic spring 37 is snap-fitted onto the opposite surfaces of the front encapsulation plate 34 and the rear encapsulation plate 35, and the telescopic spring 37 is sleeved on the outer wall of the single-headed striker 36; the co-position tube 38 is rotatably fitted onto the end of the monitoring cylinder 33 away from the axis of the monitoring ring chamber 32, and the inner wall of the co-position tube 38 has a serrated groove. Reference Figure 6 and Figure 7 It is known that a collar 311 is snapped onto the outer wall of the single-headed firing pin 36 away from the axis of the top cover 1. A coordinating rod 312, which is adapted to the serpentine groove on the inner wall of the coordinating tube 38, is snapped onto the outer wall of the coordinating tube 38 away from the monitoring cylinder 33. A compensating ring 313 is snapped onto the outer wall of the compensating ring 313 away from the monitoring cylinder 33. A compensating rod 314, which is snapped onto the outer wall of the monitoring ring compartment 32, is rotatably fitted onto the outer wall of the monitoring cylinder 33 near the coordinating tube 38. A bridging ring 315 is snapped onto the outer wall of the bridging ring 315 near the compensating ring 313. A drive gear 316 is rotatably fitted onto the outer wall of the bridging ring 315 near the compensating ring 313. A gear ring 317 is snapped onto the inner wall of the drive gear 316. A shoulder ring 318 is snapped onto the middle position of the outer wall of the coordinating tube 38. A wedge plate 319 is snapped onto the outer wall of the shoulder ring 318.

[0035] This is to clarify: When the equipment is unloaded, the heat insulation cage 216 is in an ideal horizontal state, the boom 213 remains vertical without deviation, and the outer wall of the boom 213 is in slight tangential contact with the end of the single-headed firing pin 36. The telescopic spring 37 pushes the front encapsulation piece 34 out toward the axial side of the monitoring ring chamber 32, while the single-headed firing pin 36 maintains its initial inward extension position; The corresponding rod 312 remains at the initial position of the serpentine groove of the corresponding tube 38; The wedge plate 319 and the gear ring 317 remain engaged, but are at the starting boundary of the meshing idle angle. At this time, the drive gear 316 has no tendency to rotate. S1: Instantaneous minor vibration disturbance condition: When there is only a short-term, instantaneous external disturbance, and the boom 213 experiences a brief, slight shift without a sustained tilting trend: The boom 213 laterally presses the single-headed striker 36, pushing the single-headed striker 36 to produce a small axial displacement away from the axis (monitoring ring 32), and the front encapsulation plate 34 synchronously compresses the telescopic spring 37. The collar 311 drives the corresponding rod 312 to slide along the snake groove, driving the corresponding tube 38 to produce a small circumferential deflection, and the shoulder ring 318 synchronously drives the wedge plate 319 to rotate slightly. Because of the reserved meshing idle angle between the wedge plate 319 and the gear ring 317, the small rotation of the wedge plate 319 only moves within the idle angle range, and cannot drive the gear ring 317 to rotate synchronously with the drive gear 316, so no signal is transmitted to the rear dynamic compensation unit 4. When the instantaneous vibration disappears, the boom 213 automatically springs back to its original position under its own weight and the surrounding constraints (the clamping unit 5 provides three-point flexible relative clamping and centering). Furthermore, since the wedge plate 319 initially meshes with the gear ring 317, and the tooth profile of the gear ring 317 has a tooth backlash angle reserved on both sides relative to the tooth profile of the wedge plate 319, when the reciprocating deflection of the wedge plate 319 caused by micro-vibration is less than the tooth backlash angle, the tooth profile of the wedge plate 319 only "wobbles" back and forth in the tooth backlash, and never truly touches and pushes the tooth profile of the gear ring 317. The gear ring 317 and the drive gear 316 fixed to it remain stationary, and the downstream compensation transmission chain (T-bar 41, angle bar 47, nested tube 45, hydraulic pumping circuit and clamping unit 5) led out by the drive gear 316 do not start. The slight displacement of the single-headed firing pin 36 is currently absorbed and rebounded only by the elastic deformation of the telescopic spring 37; Therefore, the meshing idle angle constitutes a mechanical threshold filtering link, which filters out the small vibration interference with an amplitude below the threshold, reducing the false response of the compensation mechanism to micro vibrations. S2: Instantaneous elastic reset after large vibrations (without triggering the adjustment of the flexible relative clamping force in clamping unit 5): When the external vibration amplitude is large, causing the wedge plate 319 to deflect beyond the tooth backlash angle and begin to drive the gear ring 317 and drive gear 316 to rotate instantaneously, since the vibration is still a transient excitation rather than a steady-state off-center load caused by the shift of the center of gravity of the heat insulation cage 216, the single-headed striker 36 immediately loses its pushing effect after the boom 213 swings back. The telescopic spring 37 pushes the single-headed striker 36, the collar 311, and the corresponding rod 312 back to the zero position with its elastic restoring force. The corresponding tube 38, the shoulder ring 318, and the wedge plate 319 then deflect and reset in the opposite direction. Correspondingly, the telescopic spring 37 stores the same amount of elastic potential energy as the single-headed striker 36 momentarily pushes outward and resets the same amount instantaneously after the vibration is removed. The entire sensing, range extension, and wedge plate 319 deflection process exhibits a completely reversible elastic instantaneous reset characteristic. S3: The connection between steady-state eccentric load and transient vibration: After filtering and instantaneous reset in steps S1 and S2, the monitoring unit 3 will only transmit the angle / displacement signal that has been "filtered out of transient vibration and confirmed as steady-state off-center load" to the downstream dynamic compensation unit 4 when the boom 213 continues to maintain a certain tilt state due to the shift of the center of gravity of the heat insulation cage 216, the single-headed striker 36 overcomes the elastic restoring force of the telescopic spring 37 and stays stably in a certain compression position for a set period (i.e., the wedge plate 319 deflects stably past the idle angle and continues to push the gear ring 317, and the positive and negative electrode rings 414 disconnect for a time that meets the steady-state threshold). The dynamic compensation unit 4 will then initiate targeted hydraulic compensation and the flexible clamping force redistribution of the clamping unit 5.

[0036] Reference Figure 3 , Figure 6 and Figure 8 It can be seen that the dynamic clamping unit 5 includes: T-shaped clamping rods 41, three in a group, for a total of three groups, and evenly distributed circumferentially on the side of the top cover 1 away from the ground; driven gear 42, which is snapped onto the outer wall of the T-shaped clamping rods 41 near the axis of the top cover 1; redundant positioning cylinder 43, which is positioned opposite to the T-shaped clamping rods 41 at the end away from the axis of the top cover 1; and corner tube 44, which is snapped onto the outer wall of the redundant positioning cylinder 43, and the inner wall of the other end of the corner tube 44 is rotatably fitted with the outer wall of the T-shaped clamping rods 41. Nested tube 45 is slidably snapped onto the inner wall of the corner tube 44 near the axis of the top cover 1; in addition, the inner wall of nested tube 45 has a serrated groove; corner sleeve 46 is snapped onto the outer wall of the T-joint rod 41 near the redundant position cylinder 43; corner rod 47 is snapped onto the middle position of the outer wall of corner sleeve 46, and the corner rod 47 and the serrated groove of the inner wall of nested tube 45 cooperate with each other; end tube 48 is snapped onto the inner wall of the corner tube 44 near the redundant position cylinder 43; movable ring 49 is slidably snapped onto the middle position of the inner wall of end tube 48; Reference Figure 6 , Figure 8 and Figure 9 It can be seen that the end tube 48 near the axis of the top cover 1 is fitted with a telescopic spring assembly 411 that is fitted with the movable ring 49 in a through-type sliding snap-fit. The outer wall of the end tube 48 away from the ground is fitted with a movable spring column 412 that extends out of the corner tube 44 in a through-type sliding snap-fit. The movable spring column 412 and the telescopic spring assembly 411 cooperate with each other. A positive electrode ring 413 is snap-fitted in the middle of the outer wall of the movable spring column 412. A negative electrode ring 414 that matches the positive electrode ring 413 is embedded in the outer wall of one side of the corner tube 44. A cross shaft rod 415 is snap-fitted in the outer wall of the end of the movable spring column 412 that extends out of the corner tube 44. Reference Figure 3 , Figure 6 and Figure 10It can be seen that the T-shaped rod 41 is symmetrically distributed with corner posts 421 on the side opposite to the ground. That is, the position and number of the two symmetrically distributed corner posts 421 correspond one-to-one with the position of a single T-shaped rod 41. An oil pipe 422 is installed on the outer wall of the corner post 421 near the axis of the top cover 1, and the axis of the oil pipe 422 is perpendicular to the axis of the top cover 1. The end of the oil pipe 422 away from the axis of the top cover 1 is connected to the other corner post 421 with a plug-in tube 423. The end of the plug-in tube 423 away from the top cover 1 is connected to an electric telescopic rod 424 through a motor base, and the movable end of the electric telescopic rod 424 extends into the plug-in tube 423. The movable end of the electric telescopic pole 424 is fitted with a branch pipe 425. The inner wall of the branch pipe 425 has a serrated groove, and the inner wall of the branch pipe 425 near the electric telescopic pole 424 has a straight groove that communicates with the serrated groove. The inner wall of the insertion pipe near the electric telescopic pole 424 is rotatably fitted with a lifting ring 426. The end of the lifting ring 426 away from the electric telescopic pole 424 is fitted with a cam 427, and the cam 427 is assembled with the branch pipe 425 through a one-way roller clutch. The opposing surfaces of the inner wall of the branch pipe 425 and the insertion pipe near the electric telescopic pole 424 are fitted together with a torsion spring 428 sleeved on the outer wall of the movable end of the electric telescopic pole 424. Reference Figure 3 , Figure 6 and Figure 10 It can be seen that a sealing ring 431 is slidably snapped onto the inner wall of the oil pipe 422 near the plug-in cylinder 423, and a positioning ring 432 is snapped onto the inner wall of the oil pipe 422 away from the plug-in cylinder 423. A double-headed spring piston 433, which is snapped onto the same positioning ring 432, is installed through the center of the sealing ring 431. A one-way oil outlet valve 434 is plugged onto the outer wall of the oil pipe 422 away from the plug-in cylinder 423. Reference Figure 3 , Figure 6 and Figure 11 It can be seen that the clamping unit 5 includes: clamping rods 51, three in a group, and the clamping rods 51 are evenly inserted in a circumferential manner at the end of the monitoring ring chamber 32 away from the top cover 1; in addition, the clamping rods 51 are slidably assembled with the monitoring ring chamber 32; a sealing corner ring 52 is slidably snapped onto the outer wall of the end of the clamping rod 51 away from the axis of the monitoring ring chamber 32, and the sealing corner ring 52 is located inside the monitoring ring chamber 32; a return spring 53 is snapped onto the sealing corner ring 52 and the inner wall of the monitoring ring chamber 32, and the return spring 53 is sleeved onto the outer wall of the clamping rod 51; and a clamping plate 54 is snapped onto the end of the clamping rod 51 near the axis of the monitoring ring chamber 32. The ball bearings 55 are evenly rolled in an array on the inner wall of the clamping plate 54 near the axis of the monitoring ring chamber 32; the protective cylinders 56 correspond one-to-one with the clamping rods 51. In addition, the protective cylinders 56 are located inside the monitoring ring chamber 32 and are snapped onto the inner wall of the monitoring ring chamber 32 near the clamping plate 54; the oil inlet check valve 57 is plugged into and snapped onto the middle position of the protective cylinder 56 away from the clamping plate 54; the plunger ring 58 is slidably snapped onto the inner wall of the protective cylinder 56 away from the monitoring ring chamber 32 through a sealing film, and the plunger ring 58 is snapped onto the sealing angle ring 52 through a connecting rod.

[0037] Instantaneous vibration conditions: The boom 213 is only impacted by airflow and momentary vibration, causing a brief shift. The movable spring column 412 moves outward with a short stroke and a limited duration. The positive electrode ring 413 moves outward with the movable spring column 412, but the positive electrode ring 413 and the negative electrode ring 414 have not completely separated, or the separation duration is lower than the preset judgment threshold. The control system (which can be implemented through an external PLC control processing system in practice) determines that the signal is an instantaneous disturbance. The electric telescopic rod 424 remains stationary, the rear hydraulic circuit does not start, the clamping unit 5 maintains the original clamping force, and does not perform any adjustment action. After the vibration disappears, the telescopic spring assembly 411 pushes the movable spring column 412 to reset, the positive electrode ring 413 and the negative electrode ring 414 resume their fit, and the mechanism returns to its initial standby state.

[0038] Steady-state off-center loading condition (the shift in the center of gravity of the insulation cage 216 causes the continuous tilting of the hanger 213): The boom 213 continues to tilt stably, the T-shaped rod 41 continues to deflect, the nested tube 45 continues to squeeze the telescopic spring assembly 411, pushes the movable spring column 412 to move outward continuously, and the positive electrode ring 413 and the negative electrode ring 414 are completely and continuously separated and the separation time reaches the judgment threshold. The system determined that the steady-state off-center load was caused by the imbalance of the center of gravity of the insulation cage 216, and then activated the electric telescopic rod 424 to officially start the clamping force adaptive adjustment process.

[0039] Displacement conversion, that is, the movable spring column 412 drives the cross shaft 415 to move along the snake groove of the branch pipe 425 (in specific implementation, a relative motion relationship is generated between the branch pipe 425 and the cross shaft 415), realizing the conversion of offset into rotation angle signal; After the steady-state off-center load determination is completed, the electric telescopic rod 424 extends forward to push the branch pipe 425 towards the movable spring column 412; The cross shaft 415 at the end of the movable spring column 412 enters the interior of the branch pipe 425. The cross shaft 415 slides relative to the inner wall of the branch pipe 425 in a snake groove, converting the axial linear displacement of the movable spring column 412 into the unidirectional circumferential rotation of the lifting ring 426 and cam 427 inside the branch pipe 425. The one-way roller clutch only allows cam 427 to transmit torque in the effective direction of adjustment, and slippage occurs when moving in the opposite direction. The axial travel of the cross shaft 415 corresponds one-to-one with the tilt offset of the hanger 213. The greater the offset, the greater the depth of the cross shaft 415 into the branch pipe 425, and the cam 427 rotation angle increases synchronously and linearly. The rotating cam 427 continuously compresses the double-headed spring piston 433, pushing the double-headed spring piston 433 to move into the oil pipe 422, compressing the hydraulic medium inside the oil pipe 422. As the medium pressure rises, the high-pressure oil is delivered to the inside of the protective cylinder 56 of the clamping unit 5 via the one-way oil outlet valve 434, the external hose, and the oil inlet one-way valve 57.

[0040] Hydraulic transmission, linear synchronous adjustment of the flexible clamping force of clamping unit 5: After the high-pressure hydraulic medium enters the cavity of the protective cylinder 56, the medium pressure pushes the plunger ring 58 to slide along the axial direction of the protective cylinder 56; The plunger ring 58 drives the sealing ring 52 to move axially synchronously through the connecting rod, changing the real-time compression of the return spring 53. The compression of the return spring 53 directly determines the radial output flexible support force of the clamping rod 51. When the tilt of the boom 213 is too large, the cam 427 rotates at a larger angle, the hydraulic pressure is higher, the plunger ring 58 pushes the sealing ring 52 to further compress the return spring 53, the preload of the return spring 53 is increased, and the radial clamping force of the clamping plate 54 and the ball bearing 55 on the boom 213 increases simultaneously. As subsequent clamping and correction reduce the tilt of boom 213, the hydraulic pressure gradually drops, the return spring 53 slowly releases its compression, and the clamping force gradient decreases synchronously. An array of ball bearings 55 is arranged on the inner side of the clamping plate 54, forming rolling contact with the outer wall of the boom 213. While providing radial constraint, it greatly reduces the frictional resistance during the vertical lifting and lowering movement of the boom 213, ensuring the synchronization of the lifting and lowering movements of multiple booms 213.

[0041] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0042] The above are merely embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A synchronous compensation device for the lifting transmission error of a polycrystalline ingot furnace heat insulation cage, comprising a top cover (1), characterized in that: The top cover (1) has an assembly unit (2) on the side near the ground, and a monitoring unit (3) on the side away from the ground. The monitoring unit (3) has a dynamic compensation unit (4) inside, and a clamping unit (5) on the side away from the ground. The dynamic clamping unit (5) includes: T-shaped rods (41) are arranged in groups of three, and are evenly distributed circumferentially on the side of the top cover (1) away from the ground. Driven gear (42) is snapped onto the outer wall of the T-shaped rod (41) near the axis of the top cover (1); The redundant sleeve (43) is positioned opposite to the T-shaped rod (41) at the end away from the axis of the top cover (1); Angle tube (44) is snapped onto the outer wall of redundant sleeve (43), and the inner wall of the other end of angle tube (44) is rotatably fitted with the outer wall of T-joint rod (41); The nested tube (45) is slidably snapped onto the inner wall of the corner tube (44) near the axis of the top cover (1); in addition, the inner wall of the nested tube (45) has a serpentine groove. Angle sleeve (46) is snapped onto the outer wall of the end of the T-shaped rod (41) near the redundant sleeve (43); Angle rod (47) is snapped into the middle position of the outer wall of the angle sleeve (46), and the angle rod (47) and the serpentine groove on the inner wall of the nested tube (45) cooperate with each other; End tube (48) is snapped onto the inner wall of the end of corner tube (44) near the redundant sleeve (43); The movable ring (49) is slidably snapped into place at the middle position of the inner wall of the end tube (48).

2. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace insulation cage according to claim 1, characterized in that: The end tube (48) near the axis of the top cover (1) is fitted with a telescopic spring assembly (411) that is fitted with the movable ring (49). The outer wall of the end tube (48) away from the ground is fitted with a movable spring column (412) that extends out of the corner tube (44). The movable spring column (412) and the telescopic spring assembly (411) cooperate with each other. A positive electrode ring (413) is fitted in the middle of the outer wall of the movable spring column (412). A negative electrode ring (414) that matches the positive electrode ring (413) is fitted in the embedded outer wall of one side of the corner tube (44). A cross shaft (415) is fitted in the outer wall of the end of the movable spring column (412) that extends out of the corner tube (44).

3. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 2, characterized in that: The T-shaped rod (41) has symmetrically distributed corner posts (421) on the side facing away from the ground. That is, the position and number of the two symmetrically distributed corner posts (421) correspond one-to-one with the position of a single T-shaped rod (41). An oil pipe (422) is snapped onto the outer wall of the corner post (421) near the axis of the top cover (1), and the axis of the oil pipe (422) is perpendicular to the axis of the top cover (1). The end of the oil pipe (422) away from the axis of the top cover (1) is snapped onto the other corner post (421) with a plug-in tube (423). The end of the plug-in tube (423) away from the top cover (1) is snapped onto an electric telescopic rod (424) through a motor base, and the movable end of the electric telescopic rod (424) extends into the plug-in tube (423). Inside, a branch pipe (425) is snapped onto the movable end of the electric telescopic rod (424). The inner wall of the branch pipe (425) has a snake groove, and the inner wall of the branch pipe (425) near the electric telescopic rod (424) has a straight groove that communicates with the snake groove. A lifting ring (426) is rotatably installed on the inner wall of the plug pipe near the electric telescopic rod (424). A cam (427) is snapped onto the end of the lifting ring (426) away from the electric telescopic rod (424). The cam (427) and the branch pipe (425) are assembled through a one-way roller clutch. A torsion spring (428) sleeved on the outer wall of the movable end of the electric telescopic rod (424) is snapped onto the opposite surfaces of the inner wall of the branch pipe (425) and the plug pipe near the inner wall of the electric telescopic rod (424).

4. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 3, characterized in that: A sealing ring (431) is slidably snapped onto the inner wall of the oil pipe (422) near the plug-in cylinder (423). A positioning ring (432) is snapped onto the inner wall of the oil pipe (422) away from the plug-in cylinder (423). A double-headed spring piston (433) is snapped onto the center of the sealing ring (431) in a through-type snap-fit ​​manner and is also snapped onto the positioning ring (432). A one-way oil outlet valve (434) is plugged onto the outer wall of the oil pipe (422) away from the plug-in cylinder (423).

5. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 4, characterized in that: The assembly unit (2) includes: The upper furnace body (21) is snapped onto the end face of the top cover (1) near the ground. The lower furnace body (22) is snapped onto the upper furnace body (21) at the end opposite to the top cover (1); The triangular bracket (23) is connected to the ground by bolts, and the triangular bracket (23) and the top cover (1) are coaxially arranged; The furnace overload lifting mechanism (24) is jointly installed between the upper furnace body (21), the lower furnace body (22) and the triangular bracket (23); The rod seat (25) is installed on the end face of the top cover (1) in a circumferentially uniform plug-in type; The triangular suspension connecting plate (26) is snapped into the middle position of the outer wall of the rod seat (25); The bearing (27) is snapped onto the end of the boom seat (25) facing away from the ground; Linear guide rail (28) is snapped into the middle of the vertical section of the triangular suspension connecting plate (26); The lead screw (29) is rotatably mounted in the middle of the inner wall of the linear guide (28).

6. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 5, characterized in that: The linear guide rail (28) is slidably fitted with a lifting slider (211) that is threadedly fitted with the lead screw (29) on the inner wall. An angle plate (212) is fitted to the outer wall of the lifting slider (211) near the axis of the top cover (1). A hanger rod (213) is fitted to the horizontal section of the angle plate (212) near the top cover (1), and the hanger rod (213) is slidably fitted with the hanger rod seat (25). A metal bellows pipe (214) is fitted to the outer wall of the hanger rod (213). A connecting flange (215) is fitted to the end of the metal bellows pipe (214) near the ground. All the connecting flanges (215) are close to... A heat insulation cage (216) is installed at one end of the ground, and the other end of the metal corrugated pipe (214) is connected to the inner wall of the top cover (1) by a flange. A heat insulation plate (217) is installed on the inner wall of the upper furnace body (21) near the top cover (1). A guide bushing (218) is installed evenly around the end face of the heat insulation plate (217). The number and position of the guide bushings (218) correspond one-to-one with the hanging rods (213). In addition, the guide bushings (218) are slidably assembled with the metal corrugated pipe (214). A crucible (219) is installed on the inner wall of the heat insulation cage (216) near the ground.

7. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 6, characterized in that: The monitoring unit (3) includes: The base (31) is snap-fitted onto the outer wall of the bearing (27); The monitoring ring chamber (32) is snapped onto the base (31) at one end away from the top cover (1); in addition, it is evenly distributed around the end face of the monitoring ring chamber (32), and the T-shaped rod (41) is assembled with the monitoring ring chamber (32) in a plug-in rotating fit. The monitoring cylinders (33) are three in number and are evenly inserted into the inner wall of the monitoring ring chamber (32) near the base (31) in a circumferential manner; The front encapsulation piece (34) is slidably snapped onto the inner wall of the monitoring cylinder (33) near the axis of the monitoring ring chamber (32); The rear encapsulation piece (35) is snapped onto the inner wall of the end of the monitoring cylinder (33) away from the axis of the monitoring ring (32); A single-headed striker (36) is installed in the middle of the front encapsulation plate (34) in a through-hole insertion manner, and the single-headed striker (36) is slidably snapped together with the rear encapsulation plate (35). The telescopic spring (37) is snapped between the opposite surfaces of the front encapsulation piece (34) and the rear encapsulation piece (35), and the telescopic spring (37) is sleeved on the outer wall of the single-headed firing pin (36); The co-position tube (38) is rotatably installed on the end of the monitoring cylinder (33) away from the axis of the monitoring ring chamber (32), and the inner wall of the co-position tube (38) has a snake groove.

8. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 7, characterized in that: The single-headed striker (36) has a collar (311) snapped onto the outer wall of the end away from the axis of the top cover (1). A matching rod (312) that matches the serpentine groove on the inner wall of the matching tube (38) is snapped onto the outer wall of the collar (311). A compensating ring (313) is snapped onto the outer wall of the end of the matching tube (38) away from the monitoring cylinder (33). A compensating rod that is snapped onto the outer wall of the monitoring ring compartment (32) is rotatably fitted onto the end of the compensating ring (313) away from the monitoring cylinder (33). (314) A bridging ring (315) is snapped onto the outer wall of the monitoring tube (33) near the co-position tube (38). A drive gear (316) is rotatably fitted onto the outer wall of the bridging ring (315) near the compensation ring (313). A gear ring (317) is snapped onto the inner wall of the drive gear (316). A shoulder ring (318) is snapped onto the middle position of the outer wall of the co-position tube (38). A wedge plate (319) is snapped onto the outer wall of the shoulder ring (318).

9. The synchronous compensation device for the lifting transmission error of the polycrystalline ingot furnace heat insulation cage according to claim 8, characterized in that: The clamping unit (5) includes: Clamping rods (51) are arranged in groups of three, and the clamping rods (51) are evenly inserted in a circumferential manner at the end of the monitoring ring chamber (32) away from the top cover (1); in addition, the clamping rods (51) are slidably assembled with the monitoring ring chamber (32); The sealing corner ring (52) is slidably snapped onto the outer wall of the end of the clamping rod (51) away from the axis of the monitoring ring chamber (32), and the sealing corner ring (52) is located inside the monitoring ring chamber (32); The reset spring (53) is snapped between the sealing corner ring (52) and the inner wall of the monitoring ring chamber (32), and the reset spring (53) is sleeved on the outer wall of the clamping rod (51); The clamping plate (54) is snapped onto one end of the clamping rod (51) near the axis of the monitoring ring (32); The ball bearings (55) are uniformly rolled in an array on the inner wall of the clamping plate (54) near the axis of the monitoring ring (32); The protective cylinder (56) is in number and position corresponding to the clamping rod (51). In addition, the protective cylinder (56) is located inside the monitoring ring chamber (32) and is snapped into the inner wall of the monitoring ring chamber (32) near the clamping plate (54). The oil inlet check valve (57) is plugged in and snapped into place at the middle position of one end of the protective cylinder (56) away from the clamp plate (54); The plunger ring (58) is installed on the inner wall of the protective cylinder (56) away from the monitoring ring chamber (32) by sliding and snapping with the sealing film, and the plunger ring (58) and the sealing corner ring (52) are assembled by snapping with the connecting rod.

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