Turnover type crystal bar transfer trolley and crystal bar transfer method

Abstract

The invention provides an overturning type crystal bar transfer trolley which comprises a bottom support mechanism capable of freely moving, a crystal bar bearing and transferring mechanism and a locking and fixing mechanism, and the locking and fixing mechanism is arranged at one end of the bottom support mechanism and can lock and fix the bottom support mechanism to one side of a single crystal furnace of a to-be-taken crystal bar; the crystal bar bearing and transferring mechanism is vertically hinged to the upper end of the bottom support mechanism and used for bearing the crystal bars, after the crystal bars are borne, the crystal bars can be overturned towards the outer side, away from the locking and fixing mechanism, of the bottom support mechanism so that the crystal bars can be overturned to be in a parallel state, and after being overturned, the crystal bar bearing and transferring mechanism can make contact with the ground so that the crystal bars can be transferred. The supporting mechanism is arranged on the base mechanism, can carry the received crystal bar and freely move with the base mechanism to transfer the crystal bar, can be laterally overturned and opened so as to take out the crystal bar, and can provide effective supporting force and stability for the base mechanism through combination of the locking and fixing mechanism and the base mechanism, so that the service life of the crystal bar is prolonged. The stability of the crystal bar carrying and transferring mechanism in the carrying and overturning process is better, and the safety of crystal bar transferring is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of crystal rod transfer technology, specifically to a flip-type crystal rod transfer vehicle and a crystal rod transfer method. Background Technology

[0002] In the field of monocrystalline silicon production, after the crystal ingots are pulled, they need to be transported to the processing workshop for subsequent processing steps such as cutting and polishing. Currently, the industry standard for the transport process after the crystal ingots are pulled is as follows: the crystal ingots are first removed from the monocrystalline furnace by a crystal removal vehicle, then placed horizontally on a crystal ingot transport vehicle, and finally the transport vehicle is manually pushed to complete the transfer.

[0003] However, with the development of the semiconductor industry, the market demand for large-size crystal ingots is increasing. Currently, the mainstream pulled products have been upgraded to 10-inch and 12-inch crystal ingots. Compared with traditional small-diameter crystal ingots, their weight has increased significantly. The existing crystal ingot handling vehicle structure design is no longer suitable for the handling needs of such large-size and heavy crystal ingots, resulting in problems such as poor handling stability, difficulty in flipping, and high operational difficulty. For example, the adjustable crystal ingot transport vehicle disclosed in patent announcement number CN219728250U uses a flip-up ingot handling frame on a support frame. A tray for supporting crystal ingots is installed at the bottom of the ingot handling frame. The ingot handling frame is equipped with a fixing rod, on which clamps and conveyor rollers are evenly installed. During unloading, the ingot handling frame is manually flipped to a parallel state, so that the crystal ingot is moved and unloaded along the conveyor rollers.

[0004] However, this crystal rod transport vehicle still has significant shortcomings when transferring and unloading large-diameter crystal rods: due to the large weight of large-diameter crystal rods, the center of gravity is high when the crystal rods are in an upright position during the transfer process, making them prone to tipping over; and during the flipping and unloading process, the shift in the center of gravity of the crystal rods will cause the stability of the support frame to decrease and the bottom support force to be insufficient, making it difficult for the rod picker to maintain a stable parallel state. This makes it difficult to control the flipping angle of the rod picker and the moving and unloading speed of the crystal rods, and there is also a risk of collision between the crystal rods and the transport vehicle or surrounding equipment. Summary of the Invention

[0005] In view of this, it is necessary to provide a flip-type crystal rod transfer vehicle and a crystal rod transfer method to solve the technical problem of poor stability in the process of transferring and unloading large-diameter crystal rods in the prior art.

[0006] It is also necessary to provide a method for transporting crystal rods.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] A flip-type crystal ingot transfer cart includes a freely movable base mechanism, a crystal ingot receiving and transfer mechanism, and a locking and fixing mechanism. The locking and fixing mechanism is detachably disposed at one end of the base mechanism and can lock and fix the base mechanism to one side of the single crystal furnace from which the crystal ingot is to be retrieved. The crystal ingot receiving and transfer mechanism is vertically hinged to the upper end of the base mechanism and is used to receive the crystal ingots output from the single crystal furnace. After receiving the crystal ingot, the crystal ingot receiving and transfer mechanism can flip outward from the base mechanism away from the locking and fixing mechanism to flip the crystal ingot into a parallel state. After flipping, the crystal ingot receiving and transfer mechanism can contact the ground and can move freely with the crystal ingot it is carrying and the base mechanism to realize crystal ingot transfer. It can also be flipped open laterally to facilitate the removal of the crystal ingot.

[0009] Preferably, the base support mechanism includes a base frame and a first movable component disposed at the bottom of the base frame. The first movable component is a caster wheel with a braking locking structure. There are at least four casters wheeled at the four corners of the bottom of the base frame.

[0010] Preferably, the locking and fixing mechanism includes a locking pin and a retaining seat. One end of the base frame is provided with a pin seat, and the retaining seat is detachably secured to one side of the single crystal furnace. One end of the locking pin is horizontally inserted into the retaining seat, and the other end is detachably horizontally inserted into the pin seat, so as to lock and fix the base frame to one side of the single crystal furnace from which the crystal rod is to be removed.

[0011] Preferably, the crystal rod receiving and transferring mechanism includes a main receiving cage and a secondary receiving cage. The main receiving cage is vertically hinged to the upper end of the base frame. The secondary receiving cage is pinned to the side of the main receiving cage facing the pin seat, and together with the main receiving cage, they form an annular receiving cage for carrying the crystal rod. The top of the receiving cage is open upward to allow the crystal rod to enter the receiving cage. A second moving component is provided on the outer wall of the main receiving cage away from the secondary receiving cage. The main receiving cage and the secondary receiving cage can be flipped to the outer side of the base frame away from the pin seat to flip the carried crystal rod into a parallel state. After flipping, the second moving component can contact the ground to support and transfer the receiving cage and the carried crystal rod. The secondary receiving cage can also be flipped open to one side of the main receiving cage to facilitate opening the receiving cage and removing the crystal rod.

[0012] Preferably, a locking mechanism is provided at the edge where the main support cage and the auxiliary support cage meet. The locking mechanism includes a fixed seat, a pin, and a socket. The fixed seat and the socket are respectively provided on the edge where the main support cage and the auxiliary support cage meet. Through holes are provided on the fixed seat and the socket, and the through holes are all opened along the length direction of the main support cage or the auxiliary support cage. After the main support cage and the auxiliary support cage meet, the through holes on the fixed seat and the socket face each other. The pin is movably inserted into the through hole of the fixed seat, and one end of the pin can extend into the through hole of the socket along the through hole of the fixed seat to lock the main support cage and the auxiliary support cage together.

[0013] Preferably, the lower inner end of the receiving cage has a conical structure adapted to the end of the crystal rod it supports.

[0014] Preferably, a number of flexible buffer pads are evenly distributed around the inner wall of the receiving cage that contacts the crystal rod.

[0015] Preferably, the base frame is further provided with a detachable fixing clamp, which includes a locking handle and a locking block. A through slot is provided on the base frame corresponding to the position of the secondary support cage. When the secondary support cage and the main support cage are closed together and in an upright position on the base frame, the locking block can be locked at the bottom of the secondary support cage, and the end of the locking handle can pass through the through slot from the lower end of the base frame and be threadedly connected to the locking block to lock the secondary support cage on the base frame.

[0016] Preferably, the upper end of the main support cage is also provided with a traction belt for pulling it to flip over to the outside of the base frame.

[0017] The invention also provides a method for transferring crystal rods, which uses the aforementioned flip-type crystal rod transfer cart to transfer crystal rods in a single crystal furnace, including the following steps:

[0018] Step a: After the secondary support cage and the main support cage are closed together, the secondary support cage and the main support cage are locked together by the locking pin mechanism to form a support cage.

[0019] Step b: Flip the interlocking main support cage and auxiliary support cage to the upper end of the base frame, and lock the auxiliary support cage to the base frame with the fixing clamps to make it stand upright;

[0020] Step c: Move the base frame to the side of the single crystal furnace where the crystal rod is to be removed, and attach the corresponding card holder to the fixed seat of the maintenance ladder on the side of the single crystal furnace. Insert the two ends of the locking pin into the corresponding pin seats of the card holder and the base frame to lock and fix the base frame to the side of the single crystal furnace where the crystal rod is to be removed.

[0021] Step d: Rotate the upper furnace cylinder of the single crystal furnace to the top of the base frame and directly face the center of the opening at the top of the receiving cage. Operate the seed crystal lifting mechanism on the single crystal furnace to slowly lower the crystal rod and drop it into the receiving cage to cut the seed crystal. Then rotate the upper furnace cylinder back.

[0022] Step e: Connect the traction belt to the hook of the pre-set gantry crane in the crystal pulling workshop. After removing the fixing clamp, operate the gantry crane to pull the main support cage slowly to the outside of the base frame away from the pin seat until the second moving component set on the outer wall of the main support cage contacts the ground. Then remove the traction belt.

[0023] Step f: Disassemble the card holder and locking pin, push the main receiving cage and base frame to the crystal rod storage area, manually open the locking pin mechanism, flip the auxiliary receiving cage to one side of the main receiving cage, and take out the crystal rod to complete the crystal rod transfer work.

[0024] As can be seen from the above technical solution, the flip-type crystal rod transfer cart provided in this application can lock and fix the base support mechanism to one side of the single crystal furnace on which the crystal rod is to be taken through the locking and fixing mechanism, and vertically hinge the crystal rod receiving and transfer mechanism at the upper end of the base support mechanism. After receiving the crystal rod, the crystal rod receiving and transfer mechanism can flip to the side of the base support mechanism away from the locking and fixing mechanism, so as to flip the crystal rod into a parallel state. After the crystal rod receiving and transfer mechanism is flipped, it can contact the ground and can carry the crystal rod it has received and the base support mechanism to move freely, realizing the crystal rod transfer. Its beneficial effect is that: by combining the locking and fixing mechanism with the base support mechanism, the displacement of the base support mechanism during the crystal taking process is restricted, and effective support force can be provided to the base support mechanism. Stability is ensured by the transfer of heavy crystal ingots from the single crystal furnace to the ingot receiving and transporting mechanism. Furthermore, during the flipping process, the base support mechanism provides stable support to the bottom of the ingot receiving and transporting mechanism, preventing tipping and instability caused by a shift in the center of gravity. In addition, the parallel transport mode after flipping not only distributes the load-bearing pressure of the base support mechanism but also lowers the center of gravity of the crystal ingots and makes their movement more stable, significantly improving stability during transport, reducing the risk of collisions, and effectively ensuring the safety of ingot transport. This solves the problems of high center of gravity, easy tipping, and poor stability associated with traditional vertical transport. Attached Figure Description

[0025] Figure 1 This is a side view of the invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the invention from another angle.

[0028] Figure 4 This is a schematic diagram of the locking and fixing mechanism of the invention.

[0029] Figure 5 This is a schematic diagram of the base support mechanism of the invention.

[0030] Figure 6 This is a schematic diagram of the installation structure of the locking mechanism of the invention.

[0031] Figure 7 This is a schematic diagram showing the invention fixed to one side of a single crystal furnace.

[0032] Figure 8 This is a schematic diagram of the invention in its upright position after receiving the crystal rod.

[0033] Figure 9 This is a schematic diagram illustrating how the crystal rod is flipped into a parallel state after being received by the invention.

[0034] Figure 10 This is a schematic diagram showing the secondary support cage flipped open to the side of the main support cage.

[0035] In the figure: base support mechanism 10, base frame 11, first moving component 12, pin seat 13, first pin hole 16, fixing clamp 14, locking handle 141, locking block 142, hinge 15, through slot 17, crystal rod receiving and transferring mechanism 20, main receiving cage 21, auxiliary receiving cage 22, second moving component 23, buffer pad 25, traction belt 26, base 27, top seat 28, locking pin mechanism 24, fixing seat 241, pin 242, socket 243, slot 244, stop 245, spring 246, through hole 247, locking and fixing mechanism 30, locking pin 31, locking seat 32, C-shaped clip 321, adjusting plate 322, adjusting bolt 323, adjusting hole 324, second pin hole 325. Detailed Implementation

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 7This invention provides a flip-type crystal ingot transfer cart, including a freely movable base support mechanism 10, a crystal ingot receiving and transfer mechanism 20, and a locking and fixing mechanism 30. The locking and fixing mechanism 30 is detachably disposed at one end of the base support mechanism 10 and can lock and fix the base support mechanism 10 to one side of the single crystal furnace from which the crystal ingot is to be retrieved. The crystal ingot receiving and transfer mechanism 20 is vertically hinged to the upper end of the base support mechanism 10 and is used to receive the crystal ingots output from the single crystal furnace. After receiving the crystal ingot, the crystal ingot receiving and transfer mechanism 20 can flip outward from the base support mechanism 10 away from the locking and fixing mechanism 30 to flip the crystal ingot into a parallel state. After flipping, the crystal ingot receiving and transfer mechanism 20 can contact the ground and can move freely with the crystal ingot it is receiving and the base support mechanism 10 to realize crystal ingot transfer. It can also be flipped open laterally to facilitate the removal of the crystal ingot.

[0038] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 7Specifically, the base support mechanism 10 includes a base frame 11 and a first moving component 12 disposed at the bottom of the base frame 11. The first moving component 12 is a caster wheel with a braking locking structure. There are at least four casters distributed at the four corners of the bottom of the base frame 11 to provide support and movement for the base frame 11. The locking and fixing mechanism 30 includes a locking pin 31 and a locking seat 32. A pin seat 13 is fixedly disposed at one end of the base frame 11. There are at least two pin seats 13, which are arranged side by side on both sides of the end of the base frame 11. A first pin hole 16 is provided for the locking pin 31 to pass through. The first pin holes 16 on each pin seat 13 are aligned. The locking pin 31 is a steel pipe structure. The locking seat 32 consists of a C-shaped clip 321 and two adjusting plates 322. Adjusting holes 324 are provided along the length of each of the two adjusting plates 322. Adjusting bolts 323 are respectively threaded through the two adjusting holes 324. The adjusting bolts 323 are threaded to the two side walls of the C-shaped clip 321 to symmetrically fix the two adjusting plates 322 to the C-shaped clip 321. On the two side walls, and one end of each of the two adjusting plates 322 extends parallel to the two side walls of the C-shaped clip 321 toward its port, a second pin hole 325 is laterally opened at the end of each adjusting plate 322 extending toward the port of the C-shaped clip 321 for the locking pin 31 to pass through. The second pin holes 325 on the two adjusting plates 322 are opposite to each other. After loosening the adjusting bolt 323, the adjusting bolt 323 and the adjusting hole 324 can slide freely relative to each other to adjust the extension length of the two adjusting plates 322. After removing the adjusting bolt 323... The C-shaped clip 321 and the two adjusting plates 322 can be separated to facilitate the fixing of the clip 32 to the mounting base at the lower end of the maintenance ladder on one side of the single crystal furnace. The maintenance ladder is mainly used to facilitate workers to climb to a suitable height for maintenance work. The maintenance ladder is generally fixed to the outside of the column (the column is the main supporting component for the installation, fixing and supporting of the furnace cylinder of the single crystal furnace). The mounting base at the lower end of the maintenance ladder is generally composed of square tubes and steel plates, and is installed on the column by welding or screw connection, which can provide stable support for the clip 32.

[0039] In use, the C-shaped clip 321 is positioned with its opening facing down on the mounting base at the lower end of the maintenance ladder on one side of the single crystal furnace from which the crystal rod is to be removed. One end of the locking pin 31 is inserted laterally from below the mounting base into the second pin hole 325 on the adjusting plates 322 on both sides of the C-shaped clip 321. The extension length of the two adjusting plates 322 is adjusted accordingly using the adjusting bolts 323 so that the locking pin 31 is close to the lower end face of the mounting base. The base frame 11 is then manually moved to one side of the single crystal furnace, and the other end of the locking pin 31 is inserted laterally through the first pin hole 16 on each pin seat 13 of the base frame 11. In this way, the base frame 11 can be locked and fixed to one side of the single crystal furnace by the locking pin 31.

[0040] Please refer to Figures 8 to 10The crystal rod receiving and transfer mechanism 20 includes a main receiving cage 21 and a secondary receiving cage 22. The main receiving cage 21 and the secondary receiving cage 22 are symmetrically arranged in a semi-circular ring structure. The secondary receiving cage 22 is pinned to the side of the main receiving cage 21 facing the pin seat 13. After closing with the main receiving cage 21, they form an annular receiving cage for carrying the crystal rod. The inner diameter and depth of the receiving cage are adapted to the diameter and length of the crystal rod. A rectangular base 27 is provided on the lower outer side of both the main receiving cage 21 and the secondary receiving cage 22. A hinge 1 is provided at the other end of the base frame 11 away from the pin seat 13. 5. The hinge 15 is connected to one side of the base 27 of the main support cage 21, and the main support cage 21 is hingedly mounted on the base frame 11. The main support cage 21 can be flipped to an upright state along the hinge 15 towards the upper end of the base frame 11, or flipped to a parallel state away from the pin seat 13 on the outer side of the base frame 11. When the main support cage 21 is flipped to an upright state, the base 27 of the main support cage 21 and the base 27 of the closed auxiliary support cage 22 are placed side by side at the upper end of the base frame 11. The base 27 can keep the main support cage 21 and the auxiliary support cage 22 in a stable upright state at the upper end of the base frame 11. When the main receiving cage 21 and the auxiliary receiving cage 22 are closed and remain upright, the top of the combined receiving cage opens upwards to allow the crystal rod to enter the receiving cage. A top seat 28 is also provided on the outer wall of the main receiving cage 21 at the end away from its base 27. The top seat 28 is aligned with the base 27 of the main receiving cage 21. A second moving component 23 is arranged side-by-side on the top seat 28 and the base 27 of the main receiving cage 21. The second moving component 23 is located on the outer wall of the main receiving cage 21 away from the auxiliary receiving cage 22. The second moving component 23 is a caster wheel with a braking locking structure. There are at least four of them, symmetrically distributed at the four corners of the back of the top seat 28 and the base 27. When the main support cage 21 and the closed secondary support cage 22 are flipped outward to the outside of the base frame 11 to a parallel state, the crystal rods they carry can also be flipped to a parallel state. When the main support cage 21 and the closed secondary support cage 22 are flipped to a parallel state, the second moving component 23 can contact the ground to provide support and movement for the main support cage 21. The secondary support cage 22 can be flipped open to one side of the main support cage 21 to expose the crystal rod as a whole, so that the crystal rod can be taken out by an external lifting tool.

[0041] Please refer to Figure 3 and Figure 6A locking mechanism 24 is provided at the edge where the main support cage 21 and the auxiliary support cage 22 meet. The locking mechanism 24 includes a fixed base 241, a pin 242, and a socket 243. The fixed base 241 and the socket 243 are respectively provided on the edge where the main support cage 21 and the auxiliary support cage 22 meet. Through holes 247 are respectively provided on the fixed base 241 and the socket 243. The through holes 247 are all along the main support cage. The main support cage 21 or the auxiliary support cage 22 is opened along its length. After the main support cage 21 and the auxiliary support cage 22 are closed together, the through holes 247 on the fixing seat 241 and the socket 243 are directly opposite each other. The pin 242 is movably inserted into the through hole 247 of the fixing seat 241, and one end of it can extend into the through hole 247 of the socket 243 along the through hole 247 of the fixing seat 241 to lock the main support cage 21 and the auxiliary support cage 22 together.

[0042] Please continue reading. Figure 3 and Figure 6 For ease of operation, a slot 244 is laterally formed at the end of the fixing base 241 away from the socket 243. The slot 244 connects to the through hole 247 on the fixing base 241 and its outer wall. The end of the pin 242 away from the socket 243 is bent in an L-shape and can be movably locked in the slot 244. A stop 245 is provided on the outer wall of the fixing base 241 through which the pin 242 passes. The stop 245 is near the end of the pin 242 facing the socket 243. A spring 246 is sleeved on the pin 242. One end of the spring 246 abuts against the stop 245, and the other end abuts against the fixing base 241. The deformation force of the spring 246 is utilized to... The pin 242 is positioned against the socket 243 to prevent it from disengaging from the through hole 247 of the socket 243. When it is necessary to flip the secondary support cage 22 towards the main support cage 21, the pin 242 is manually pulled in the opposite direction to disengage it from the socket 243, thus releasing the lock between the secondary support cage 22 and the main support cage 21. After the pin 242 disengages from the socket 243, the bent end of the pin 242 can be turned towards the side of the slot 244, allowing it to rest on the end face of the fixing seat 241 for limiting its position. This facilitates the operation when relocking the secondary support cage 22 and the main support cage 21. In this embodiment, the locking mechanism 24 can be configured in multiple sets, spaced apart along the edges where the main support cage 21 and the secondary support cage 22 meet, to improve the stability of the secondary support cage 22 and the main support cage 21 after they are closed.

[0043] Furthermore, the lower end of the inner part of the receiving cage formed by the combination of the secondary receiving cage 22 and the main receiving cage 21 is a conical structure adapted to the end of the crystal rod it carries. When the crystal rod enters the receiving cage from the upper opening, the receiving cage with a conical bottom structure can effectively receive and protect the crystal rod, preventing damage to the tip of the crystal rod.

[0044] Please refer to Figure 2 Furthermore, the inner wall of the receiving cage formed by the combination of the secondary receiving cage 22 and the main receiving cage 21, which is in contact with the crystal rod, is provided with a number of flexible buffer pads 25 evenly distributed around its circumference. The flexible buffer pads 25 are made of high temperature resistant materials (such as glass wool and flexible graphite). The flexible buffer pads 25 can provide buffer protection for the crystal rod and prevent hard friction contact between the crystal rod and the receiving cage.

[0045] Please refer to Figure 2 , Figure 5 and Figure 9 Furthermore, to improve the stability of the receiving cage when it is in an upright position, a detachable fixing clamp 14 is also provided on the base frame 11. The fixing clamp 14 includes a locking handle 141 and a locking block 142. A through groove 17 corresponding to the position of the secondary receiving cage frame 22 is provided on the base frame 11. When the secondary receiving cage frame 22 and the main receiving cage frame 21 are closed together and in an upright position on the base frame 11, the locking block 142 can be locked onto the base 27 at the lower end of the secondary receiving cage frame 22. The end of the locking handle 141 can pass through the through groove 17 from the lower end of the base frame 11 and be threadedly connected to the locking block 142 to lock the secondary receiving cage frame 22 on the base frame 11. In this embodiment, there are two sets of fixing clamps 14, which are respectively set on both sides of the base frame 11 and correspond to the two sides of the base 27 at the lower end of the auxiliary receiving cage frame 22. The auxiliary receiving cage frame 22 can be stably locked on the base frame 11. When it is necessary to flip the receiving cage, the two sets of fixing clamps 14 can be manually removed.

[0046] Please continue reading. Figure 2 Furthermore, in order to facilitate the flipping of the receiving cage, a traction belt 26 is also provided at the upper end of the main receiving cage frame 21. When flipping the receiving cage, the traction belt 26 can be connected to the hook of the gantry crane or other traction device set in the crystal pulling workshop, and the receiving cage can be slowly flipped to the outside of the base frame 11 to a parallel state by the gantry crane or other traction device.

[0047] In practical use, after the auxiliary receiving cage 22 and the main receiving cage 21 are manually closed together, the locking mechanism 24 is operated to lock the auxiliary receiving cage 22 and the main receiving cage 21 together. After the closed auxiliary receiving cage 22 and the main receiving cage 21 are flipped to an upright position, the fixing clamp 14 is installed to lock the auxiliary receiving cage 22 onto the base frame 11. The locking and fixing mechanism 30 is manually fixed onto the mounting base at the lower end of the maintenance ladder on one side of the single crystal furnace to be taken out. After pushing the base frame 11 to the side of the single crystal furnace, the corresponding locking pin 31 is passed through the first pin hole 16 on each pin seat 13, and the first moving component 12 is set to the locked state. In this way, the base frame 11 can be locked and fixed on one side of the single crystal furnace by the locking pin 31. After the single crystal furnace is opened, the upper furnace cylinder of the single crystal furnace is rotated to the base frame 11. Above the main crystal furnace, directly facing the center of the opening at the top of the receiving cage, operate the seed crystal lifting mechanism to slowly lower the crystal rod to be retrieved. After the crystal rod falls into the receiving cage, the furnace cylinder rotates back. At this time, connect the traction belt 26 on the main receiving cage frame 21 to the hook of the gantry crane in the crystal pulling workshop, remove the fixing clamp 14, and start the gantry crane to slowly pull and rotate the receiving cage until the second moving component 23 on the main receiving cage frame 21 touches the ground. Separate the traction belt 26 from the hook of the gantry crane and remove the locking pin 31. At this time, the crystal rod can be moved to the crystal rod storage area by manually pushing the receiving cage and the base frame 11. After reaching the crystal rod storage area, manually release the locking mechanism 24 from the secondary receiving cage frame 22 and flip the secondary receiving cage frame 22 to one side of the main receiving cage frame 21 to open it. At this time, the crystal rod can be taken out.

[0048] It should be noted that the aforementioned card holder 32 is not limited to being fixedly installed on the mounting base at the lower end of the maintenance ladder on one side of the single crystal furnace, but can also be fixed on the base or column of the single crystal furnace or other fixed objects. In addition, the flip-type crystal rod transfer car needs to use the gantry crane preset in the crystal pulling workshop for flipping operations, and it must be ensured that the traction direction of the gantry crane is consistent with the flipping direction of the receiving cage.

[0049] In the above embodiment, since the base frame 11 is locked and fixed on one side of the single crystal furnace by the locking and fixing mechanism 30, the locking and fixing mechanism 30 can provide effective support and stability for the base frame 11, so that the receiving cage is less likely to tip over and the base frame 11 is unstable during the flipping process, thereby improving the stability of the receiving cage during the flipping process and effectively ensuring the safety of the crystal rod.

[0050] The invention also provides a method for transferring crystal rods, which uses the aforementioned flip-type crystal rod transfer cart to transfer crystal rods in a single crystal furnace, specifically including the following steps:

[0051] Step a: After the auxiliary support cage 22 and the main support cage 21 are closed together, the auxiliary support cage 22 and the main support cage 21 are locked together by the locking pin mechanism 24, so that they are combined into a support cage state.

[0052] Step b: Flip the interlocking main support cage 21 and secondary support cage 22 to the upper surface of the base frame 11, and lock the secondary support cage 22 to the base frame 11 with the fixing clamp 14 so that it is in an upright state.

[0053] Step c: Move the base frame 11 to the side of the single crystal furnace where the crystal rod is to be removed, and attach the corresponding card holder 32 to the mounting base of the maintenance ladder on the side of the single crystal furnace. Insert the two ends of the locking pin 31 into the corresponding pin seats 13 of the card holder 32 and the base frame 11 to lock and fix the base frame 11 to the side of the single crystal furnace where the crystal rod is to be removed.

[0054] Step d: Rotate the upper furnace cylinder of the single crystal furnace to above the base frame 11 and directly facing the center of the opening at the top of the receiving cage. Operate the seed crystal lifting mechanism on the single crystal furnace to slowly lower the crystal rod and drop it into the receiving cage to cut the seed crystal. Then, rotate the upper furnace cylinder back.

[0055] Step e: Connect the traction belt 26 to the hook of the gantry crane in the crystal pulling workshop. After removing the fixing clamp 14, operate the gantry crane to pull the main support cage 21 and slowly rotate it to the outside of the base frame 11 away from the pin seat 13 until the second moving component 23 set on the outer wall of the main support cage 21 contacts the ground. Then remove the traction belt 26.

[0056] Step f: Disassemble the card holder 32 and locking pin 31, push the main receiving cage 21 and the base frame 11 to the crystal rod storage area, manually open the locking pin mechanism 24, flip the auxiliary receiving cage 22 to one side of the main receiving cage 21, and take out the crystal rod to complete the crystal rod transfer work.

[0057] In step e, as the gantry crane slowly rotates the main support cage 21 toward the outside of the base frame 11 away from the pin seat 13, the traction belt 26 should always be kept taut.

[0058] The invention provides a flip-type crystal rod transfer cart that, through the combination of a locking and fixing mechanism 30 and a base support mechanism 10, restricts the displacement of the base support mechanism 10 during crystal removal, providing effective support and stability to the base support mechanism 10 and ensuring the stability of heavy crystal rods transferred from the single crystal furnace to the crystal rod receiving and transfer mechanism 20. Furthermore, during the flipping process, the base support mechanism 10 provides stable support to the bottom of the crystal rod receiving and transfer mechanism 20, preventing tipping and instability caused by a shift in the center of gravity. In addition, the parallel transfer mode after the crystal rod receiving and transfer mechanism 20 is flipped not only distributes the load-bearing pressure of the base support mechanism 10 but also lowers the center of gravity of the crystal rods and makes their movement more stable, significantly improving stability during transfer, reducing the risk of collision, and effectively ensuring the safety of crystal rod transfer. This solves the problems of high center of gravity, easy tipping, and poor stability of crystal rods during traditional vertical transfer.

[0059] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A flip-type crystal rod transfer cart, characterized in that: The device includes a freely movable base mechanism, a crystal rod receiving and transfer mechanism, and a locking and fixing mechanism. The locking and fixing mechanism is detachably mounted at one end of the base mechanism and can lock and fix the base mechanism to one side of the single crystal furnace from which the crystal rod is to be retrieved. The crystal rod receiving and transfer mechanism is vertically hinged to the upper end of the base mechanism and is used to receive the crystal rod output from the single crystal furnace. After receiving the crystal rod, the crystal rod receiving and transfer mechanism can be flipped outward from the base mechanism away from the locking and fixing mechanism to flip the crystal rod into a parallel state. After flipping, the crystal rod receiving and transfer mechanism can contact the ground and can move freely with the crystal rod it receives and the base mechanism to realize crystal rod transfer. It can also be flipped open laterally to facilitate the removal of the crystal rod.

2. The flip-type crystal rod transfer cart as described in claim 1, characterized in that: The base support mechanism includes a base frame and a first movable component disposed at the bottom of the base frame. The first movable component is a caster wheel with a braking locking structure. There are at least four casters wheeled at the four corners of the bottom of the base frame.

3. The flip-type crystal rod transfer cart as described in claim 2, characterized in that: The locking and fixing mechanism includes a locking pin and a retaining seat. One end of the base frame is provided with a pin seat. The retaining seat is detachably attached to one side of the single crystal furnace. One end of the locking pin is horizontally inserted into the retaining seat, and the other end is detachably inserted horizontally into the pin seat to lock and fix the base frame to one side of the single crystal furnace from which the crystal rod is to be removed.

4. The flip-type crystal rod transfer cart as described in claim 3, characterized in that: The crystal rod receiving and transfer mechanism includes a main receiving cage and a secondary receiving cage. The main receiving cage is vertically hinged to the upper end of the base frame. The secondary receiving cage is pinned to the side of the main receiving cage facing the pin seat, and together with the main receiving cage, they form an annular receiving cage for carrying the crystal rod. The top of the receiving cage is open upward to allow the crystal rod to enter the receiving cage. A second moving component is provided on the outer wall of the main receiving cage away from the secondary receiving cage. The main receiving cage and the secondary receiving cage can be flipped to the outer side of the base frame away from the pin seat to flip the carried crystal rod into a parallel state. After flipping, the second moving component can contact the ground to support and transfer the receiving cage and the carried crystal rod. The secondary receiving cage can also be flipped open to one side of the main receiving cage to facilitate opening the receiving cage and removing the crystal rod.

5. The flip-type crystal rod transfer cart as described in claim 4, characterized in that: A locking mechanism is provided at the edge where the main support cage and the auxiliary support cage meet. The locking mechanism includes a fixed seat, a pin, and a socket. The fixed seat and the socket are respectively provided on the edge where the main support cage and the auxiliary support cage meet. Through holes are provided on the fixed seat and the socket, and the through holes are all opened along the length of the main support cage or the auxiliary support cage. After the main support cage and the auxiliary support cage meet, the through holes on the fixed seat and the socket are directly opposite each other. The pin is movably inserted into the through hole of the fixed seat, and one end of the pin can extend into the through hole of the socket along the through hole of the fixed seat to lock the main support cage and the auxiliary support cage together.

6. The flip-type crystal rod transfer cart as described in claim 5, characterized in that: The lower inner end of the receiving cage has a conical structure that matches the end of the crystal rod it supports.

7. The flip-type crystal rod transfer cart as described in claim 6, characterized in that: Several flexible buffer pads are evenly distributed around the inner wall of the receiving cage that contacts the crystal rod.

8. The flip-type crystal rod transfer cart as described in claim 7, characterized in that: The base frame is also equipped with a detachable fixing clamp, which includes a locking handle and a locking block. A through slot is provided on the base frame corresponding to the position of the secondary support cage. When the secondary support cage and the main support cage are closed together and in an upright position on the base frame, the locking block can be locked at the bottom of the secondary support cage, and the end of the locking handle can pass through the through slot from the bottom of the base frame and be threadedly connected to the locking block to lock the secondary support cage on the base frame.

9. The flip-type crystal rod transfer cart as described in claim 8, characterized in that: The upper end of the main support cage is also equipped with a traction belt for pulling it to flip over to the outside of the base frame.

10. A method for transferring crystal rods, comprising using a flip-type crystal rod transfer cart as described in claim 9 to transfer crystal rods in a single crystal furnace, characterized in that: Includes the following steps: Step a: After the secondary support cage and the main support cage are closed together, the secondary support cage and the main support cage are locked together by the locking pin mechanism to form a support cage. Step b: Flip the interlocking main support cage and auxiliary support cage to the upper end of the base frame, and lock the auxiliary support cage to the base frame with the fixing clamps to make it stand upright; Step c: Move the base frame to the side of the single crystal furnace where the crystal rod is to be removed, and attach the corresponding card holder to the fixed seat of the maintenance ladder on the side of the single crystal furnace. Insert the two ends of the locking pin into the corresponding pin seats of the card holder and the base frame to lock and fix the base frame to the side of the single crystal furnace where the crystal rod is to be removed. Step d: Rotate the upper furnace cylinder of the single crystal furnace to the top of the base frame and directly face the center of the opening at the top of the receiving cage. Operate the seed crystal lifting mechanism on the single crystal furnace to slowly lower the crystal rod and drop it into the receiving cage to cut the seed crystal. Then rotate the upper furnace cylinder back. Step e: Connect the traction belt to the hook of the pre-set gantry crane in the crystal pulling workshop. After removing the fixing clamp, operate the gantry crane to pull the main support cage slowly to the outside of the base frame away from the pin seat until the second moving component set on the outer wall of the main support cage contacts the ground. Then remove the traction belt. Step f: Disassemble the card holder and locking pin, push the main receiving cage and base frame to the crystal rod storage area, manually open the locking pin mechanism, flip the auxiliary receiving cage to one side of the main receiving cage, and take out the crystal rod to complete the crystal rod transfer work.

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