Clamping equipment for carrying circular polycrystalline silicon ingot

Abstract

The utility model discloses clamping equipment for carrying a circular polycrystalline silicon ingot, and relates to the technical field of polycrystalline silicon carrying. The clamping equipment comprises a hoisting base used for being connected with a load hoisting device; the supporting assembly is in sliding connection with the hoisting base and can slide relative to the hoisting base in the longitudinal direction; the clamping assemblies are arranged around the supporting assembly in the circumferential direction, the clamping assemblies are hinged to the supporting assembly and each provided with a clamping end and a linkage end, and the clamping ends stretch out in the direction away from the hoisting base; the clamping ends of the more than three clamping assemblies are jointly enclosed to form a clamping space for clamping a silicon ingot; the linkage end of each supporting assembly is connected with the hoisting base in a sliding mode, and the supporting assemblies and the hoisting base move back to back or move in the opposite direction in the longitudinal direction to drive the clamping ends of the three or more clamping assemblies to rotate inwards to reduce the clamping space or rotate outwards to increase the clamping space.

Description

Technical Field

[0001] This utility model relates to the field of polycrystalline silicon handling technology, specifically to a clamping device for handling circular polycrystalline silicon ingots. Background Technology

[0002] Polysilicon is one of the most important materials in the semiconductor industry, and polysilicon rings and wafers are crucial components of semiconductor equipment. Polysilicon rings and wafers are typically obtained from circular polysilicon ingots through a series of cutting processes. With the rapid development of the semiconductor industry, equipment sizes are increasing, and the types and specifications are becoming more diverse, driving the development of polysilicon ingots towards larger sizes, heavier weights, and more specifications. Clearly, manual handling alone cannot meet the needs of industrial production. On the one hand, manual handling is labor-intensive; larger polysilicon ingots require multiple operators, which is time-consuming and labor-intensive. On the other hand, manual handling suffers from poor reliability and stability.

[0003] Furthermore, traditional square polycrystalline silicon ingot clamping equipment typically uses two chucks symmetrically distributed at 180°, with the contact surface between the chucks and the silicon ingot being a flat plane. This structure is difficult to meet the handling requirements of round polycrystalline silicon ingots, resulting in a low safety factor. Even if the chuck surface is designed as an arc surface matching the outer circumference of the round silicon ingot, it is still difficult to universally accommodate round silicon ingots with different outer diameters. Due to the diversity of round silicon ingot product sizes and the unavoidable dimensional tolerances of silicon ingots during casting, a series of clamps of different sizes are required. This increases equipment costs and the workload of repeatedly changing clamps, reducing production efficiency.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] Purpose of this utility model: The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a clamping device for handling round polycrystalline silicon ingots. The clamping space is adjustable to accommodate silicon ingots of different outer diameters, assisting in the hoisting and handling of round polycrystalline silicon ingots, and improving production efficiency and handling safety.

[0006] To solve the above-mentioned technical problems, this utility model discloses a clamping device for handling circular polycrystalline silicon ingots, comprising:

[0007] Lifting base, used to connect to the load-bearing device;

[0008] The support assembly is slidably connected to the lifting base and is capable of sliding relative to the lifting base in the longitudinal direction;

[0009] The support assembly includes three or more clamping components arranged circumferentially around the support assembly. Each clamping component is hinged to the support assembly and has a clamping end and a linkage end. The clamping end extends away from the lifting base. The clamping ends of the three or more clamping components together enclose a clamping space for clamping the silicon ingot. The linkage end of each support assembly is slidably connected to the lifting base. The support assembly and the lifting base move longitudinally in opposite directions or towards each other, causing the clamping ends of the three or more clamping components to rotate inward to reduce the clamping space or rotate outward to increase the clamping space.

[0010] Specifically, each clamping component includes a lever and a gripper. The lever is hinged to the support component to enable the clamping component to be hinged to the support component. The upper end of the lever is the linkage end of the clamping component, and the gripper is disposed at the lower end of the lever and serves as the clamping end of the clamping component.

[0011] More specifically, the hinge point between the lever and the support assembly divides the lever into an upper torque rod and a lower torque rod, the length ratio of the upper torque rod to the lower torque rod being greater than 1.

[0012] More specifically, the upper torque bar includes a transverse torque section, a longitudinal torque section, and a corner section connecting the transverse torque section and the longitudinal torque section. The inner end of the transverse torque section extends outward from the hoisting base, and after passing through the corner section, forms the downward extending longitudinal torque section.

[0013] Specifically, each lever is provided with a roller at its upper end, and the lifting base includes a lifting base frame and a plurality of slides disposed on the lifting base frame and gradually inclined outward from top to bottom. The slides are correspondingly disposed with the rollers and are slidably connected.

[0014] Specifically, the support assembly includes a slide rod and a support rod. The slide rod extends longitudinally and is slidably connected to the hoisting base to achieve the slidable connection between the support assembly and the hoisting base. The support rod is correspondingly arranged with each of the clamping assemblies, and the support rod is laterally arranged at the lower end of the slide rod and extends radially outward from the slide rod. The support rod is provided with a fulcrum portion for hinged with the corresponding clamping assembly so that the clamping assembly is hinged to the support assembly.

[0015] Specifically, the support assembly further includes a bending portion formed at the end of the support rod and bent toward the lower end of the lever, and the fulcrum portion is disposed at the bending portion.

[0016] Specifically, the hoisting base frame includes a top support member, a bottom support member spaced below the top support member, and a middle support member spaced between the top support member and the bottom support member, and the slide is fixed to the top support member, the middle support member, and the bottom support member;

[0017] The bottom support member has a second shaft hole that runs longitudinally through it, and the middle support member has a third shaft hole that runs longitudinally through it. The sliding rod is movably inserted into the second shaft hole and the third shaft hole to achieve a sliding connection between the sliding rod and the hoisting base frame.

[0018] The bottom of the top support member is provided with a longitudinally extending clearance space to avoid the upper part of the sliding rod moving upward.

[0019] Specifically, the upper end of the slide rod is provided with a limiting part, which extends radially outward from the slide rod and protrudes from the slide rod. When the hoisting base frame moves upward until the middle support abuts against the limiting part, the limiting part restricts the relative movement of the hoisting base frame and the support assembly.

[0020] Specifically, the gripper includes a gripper bar and a gripper head disposed inside the gripper bar. The gripper head is hinged to the gripper bar and can rotate freely relative to the gripper bar. A gripper connecting part is provided at the lower end of the lever. A first gripper positioning hole is provided in the gripper connecting part. The gripper bar is arranged laterally to form a plurality of second gripper positioning holes. The gripper bar is connected and fixed to the gripper connecting part by a pin engaging with the first gripper positioning holes and the second gripper positioning holes.

[0021] Beneficial effects:

[0022] 1. The clamping device for handling round polycrystalline silicon ingots provided by this utility model can adapt to silicon ingots of different outer diameters, assist in the hoisting and handling of round polycrystalline silicon ingots, and improve production efficiency and handling safety.

[0023] 2. The clamping device provided by this utility model has a sliding track that slopes outward from top to bottom on the lifting base. The linkage end of the clamping component is slidably connected to the sliding track through rollers. This allows the clamping end of the clamping component to rotate inward to reduce the clamping space or rotate outward to increase the clamping space by lifting or lowering the lifting base. The operation is simple.

[0024] 3. This utility model increases the clamping force by setting the hinge point position of the clamping component and the support component and utilizing the lever principle.

[0025] 4. By using the bending part, the fulcrum is brought closer to the lower end of the lever, thereby increasing the length ratio of the upper torque rod and the lower torque rod while the lever is at a specified height, so as to further increase the clamping force by utilizing the lever principle. Attached Figure Description

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0027] Figure 1 A three-dimensional structural schematic diagram of a clamping device for handling circular polycrystalline silicon ingots, provided as an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The diagram shows the composition of a clamping device for handling circular polycrystalline silicon ingots.

[0029] Figure 3 for Figure 1 The diagram shows the structural schematic of the support assembly of the clamping device.

[0030] Figure 4 for Figure 1 The diagram shows the structure of the lifting base in the clamping device.

[0031] Figure 5 for Figure 1 A schematic diagram of the structure of a clamping component in the clamping device shown;

[0032] Figure 6 for Figure 1 The diagram shows the operation of the clamping device.

[0033] The reference numerals in the attached drawings are explained as follows: 100, support assembly; 110, slide bar; 120, support rod; 121, connecting part; 122, fulcrum part; 123, bending part; 130, shock-absorbing part; 140, limiting part; 150, first shock-absorbing pad; 200, lifting base; 210, lifting base frame; 211, top support; 212, bottom support; 213, middle support; 214, clearance space; 215, second shaft hole; 216, third shaft hole; 217 1. Hook; 220. Slide rail; 230. Lifting hole; 300. Clamping assembly; 310. Lever; 311. Upper torque bar; 3111. Lateral torque section; 3112. Longitudinal torque section; 3113. Corner; 312. Lower torque bar; 313. Pivot hole; 320. Roller; 321. Gripper; 330. Gripper connection; 340. Gripper; 341. Gripper bar; 342. Gripper head; 343. Second shock-absorbing pad; 400. Hanging chain; 500. Silicon ingot. Detailed Implementation

[0034] Combination Figure 1 and Figure 2 As shown, the clamping device for handling circular polycrystalline silicon ingots according to an embodiment of the present invention includes:

[0035] Lifting base 200, used for connection with overhead crane;

[0036] The support component 100 is connected to the lifting base 200 and is capable of sliding relative to the lifting base 200 in the longitudinal direction;

[0037] And three or more clamping components 300 arranged circumferentially around the support component 100. The three or more clamping components 300 are hinged to the support component 100 and have clamping ends and linkage ends. The clamping ends extend in the direction away from the lifting base 200. The clamping ends of the three or more clamping components 300 together enclose a clamping space for clamping the silicon ingot 500. The linkage ends of each support component 100 are slidably connected to the lifting base 200. The support component 100 and the lifting base 200 move in opposite directions or towards each other in the longitudinal direction, causing the clamping ends of the three or more clamping components 300 to rotate inward to reduce the clamping space or rotate outward to increase the clamping space.

[0038] Furthermore, combined Figure 2 As shown, the clamping device also includes a hanging chain 400, which is detachably hung between the support assembly 100 and the lifting base 200. When clamping is not required, the hanging chain 400 connects the support assembly 100 and the lifting base 200, restricting the movement of the lifting base 200 relative to the support assembly 100, thereby restricting the movement of the clamping assembly 300.

[0039] Combination Figures 1 to 3 As shown, the support assembly 100 includes a support rod 120, a slide rod 110, a shock-absorbing part 130, and a limiting part 140. The slide rod 110 extends longitudinally and its upper end is slidably connected to the lifting base 200, so that the lifting base 200 can slide up and down longitudinally along the slide rod 110. Optionally, the slide rod 110 can be a smooth rod; it can also be a rod-shaped structure with guide rails on its outer wall. One or more longitudinally extending guide rails are formed on the outer wall surface of the slide rod 110. The guide rails protrude outward or are recessed inward around the slide rod 110, so that the lifting base 200 is matched and engaged with the guide rails and can move on the guide rails.

[0040] Multiple support rods 120 are provided, which are laterally arranged at the lower end of the slide rod 110 and extend radially outward from the outer periphery of the slide rod 110, so that one end of each support rod 120 is connected to the slide rod 110, and the other end is disposed away from the slide rod 110. Each clamping assembly 300 is hinged to the support assembly 100 by a corresponding support rod 120. Preferably, the support rods 120 are arranged at equal intervals. Preferably, there are 4 or 6 support rods 120, such as... Figure 1 In the middle, four support rods of 120 are set up in a cross shape.

[0041] Combination Figure 3 As shown, multiple support rods 120 are integrally formed. At the center of the multiple support rods 120, a connecting portion 121 extends longitudinally upward from the upper end face of the center of the multiple support rods 120. The lower end of the slide rod 110 is threadedly connected to the connecting portion 121. More specifically, the connecting portion 121 is cylindrical, with an open upper end face that extends through to the interior. An internal thread is formed on the inner wall surface of the through portion 121, and an external thread matching the internal thread of the connecting portion 121 is formed on the outer wall surface of the lower end of the slide rod 110. The slide rod 110 and the connecting portion 121 are threadedly connected through the cooperation of the internal and external threads of the connecting portion 121 and the slide rod 110.

[0042] Combination Figure 1 As shown, reinforcing ribs can also be provided on the common vertical surface between the connecting part 121 and each support rod 120 to increase the load strength that the support rod 120 can bear, so that the support rod 120 has a strong load capacity and stable clamping when the equipment is performing clamping operation.

[0043] In other embodiments, the multiple support rods 120 can also be set separately and connected to the slide rod 110 respectively. Alternatively, they can be fixed by welding, snap-fitting or other methods.

[0044] Each support rod 120 is provided with a fulcrum portion 122 for hinged connection with the clamping assembly 300, thereby forming a plurality of fulcrum portions 122 distributed circumferentially on the lower end of the slide rod 110. The fulcrum portions 122 can be provided at the other end of the support rod 120 or at various locations along the extension direction of the support rod 120. That is, the distance of the fulcrum portion 122 from the axis of the slide rod 110 can be set according to the actual size, shape and clamping force requirements of the silicon ingot, making the application of the clamping equipment more flexible.

[0045] Combination Figure 3As shown, at the other end of the support rod 120, near the end of the support rod 120, a bent portion 123 is formed pointing towards the lower end of the lever 310, and a fulcrum portion 122 is provided at the end of the bent portion 123. After extending laterally towards the outside of the slide rod 110, the support rod 120 bends at a certain angle towards the lower end of the lever 310, and continues to extend outward in this direction, forming a fulcrum portion 122 at the end of the bent portion 123 that is hinged to the lever 310. In this embodiment, an assembly groove is formed at the end of the bent portion 123, which is open to the end and partially open in the longitudinal direction, allowing the lever 310 to pass through. The size of the opening of the assembly groove is set according to the swing range of the lever 310. The fulcrum portion 122 is formed on both side walls of the assembly groove and is formed as a hole structure for bolt assembly, and the lever 310 is connected to the fulcrum portion 122 by bolts.

[0046] By bending part 123, the fulcrum part 122 is brought closer to the lower end of lever 310, thereby increasing the length ratio of upper torque rod 311 and lower torque rod 312 based on the lever 310 being at a specified height, so as to increase the clamping force by utilizing the lever principle.

[0047] The sliding rod 110 and multiple support rods 120 form a central frame that supports the sliding and clamping actions of the hoisting base 200 and the clamping assembly 300, allowing the hoisting base 200 to move up and down along the sliding rod 110 and the clamping assembly 300 to swing around the fulcrum 122.

[0048] Furthermore, combined Figure 3As shown, a shock-absorbing part 130 is provided at the lower part of the slide rod 110 and the upper end of the connecting part 121 of the support rod 120. The lower end of the shock-absorbing part 130 is connected to the upper end face of the connecting part 121. Preferably, the shock-absorbing part 130 is a spring, which surrounds the lower outer periphery of the slide rod 110. When the lifting base 200 moves downward to the lower part of the slide rod 110 near the connecting part 121 of the support rod 120, the shock-absorbing part 130 forms a buffer between the bottom of the lifting base 200 and the upper end of the connecting part 121, reducing the impact of collisions and vibrations generated by contact. Furthermore, to prevent the lifting base 200 from detaching from the slide rod 110 when moving on the slide rod 110, a limiting part 140 is provided at the upper end of the slide rod 110. The limiting part 140 extends radially outward from the slide rod 110 and protrudes from the outer wall surface of the slide rod 110. It is wider than the structural dimensions of the second shaft hole 215 of the bottom support member 212 and the third shaft hole 216 of the middle support member 213 at the joint between the lifting base 200 and the slide rod 110, as described below. Preferably, the limiting part 140 is set as a limiting bolt and installed at the upper end of the slide rod 110. When the lifting base 200 moves upward to the point where the middle support member 213 abuts against the limiting part 140, the portion of the limiting part 140 protruding from the slide rod 110 blocks the connection between the lifting base 200 and the slide rod 110, thereby preventing the lifting base 200 from moving upward further. Thus, the limiting part 140 restricts the upward movement limit of the lifting base 200 on the slide rod 110, forming the upper stop point of the sliding of the lifting base 200 and preventing the lifting base 200 from detaching from the support assembly 100.

[0049] In this embodiment, the height of the slide rod 110 is set such that when the lifting base 200 moves downward to its lower stop point and presses against the shock-absorbing part 130, the height of the slide rod 110 is lower than the movable space at the top of the lifting base 200 (the clearance space 214 of the top support member 211). In some embodiments, the height of the slide rod 110 can be set to match the movable space at the top of the lifting base 200, so that when the lifting base 200 moves downward to its bottom and abuts against the shock-absorbing part 130, the top of the lifting base 200 abuts against the limiting part 140.

[0050] Combination Figure 6 As shown, a first shock-absorbing pad 150 is also installed at the bottom of the support rod 120. The first shock-absorbing pad 150 is in contact with the surface of the silicon ingot 500, which can both increase the friction and protect the surface of the silicon ingot. The first shock-absorbing pad is preferably made of silicone or rubber.

[0051] Combination Figure 1 , Figure 2 and Figure 4As shown, the hoisting base 200 includes a hoisting base frame 210 that is slidably connected to the slide rod 110 and can slide along the slide rod 110, and a plurality of slide rails 220 that are disposed on the hoisting base frame 210 and gradually tilt outward from top to bottom. The hoisting base frame 210 includes a top support 211, a bottom support 212 spaced below the top support 211, and a middle support 213 spaced between the top support 211 and the bottom support 212. A slide rail 220 is fixed to the top support 211, the middle support 213, and the bottom support 212. A second shaft hole 215 is formed in the bottom support 212, and a third shaft hole 216 is formed in the middle support 213. A slide rod 110 is movably inserted through the second shaft hole 215 and the third shaft hole 216 to achieve a sliding connection between the slide rod 110 and the hoisting base frame 210. The bottom of the top support 211 is provided with a longitudinally extending clearance space 214 for avoiding the upper part of the upwardly moving slide rod 110.

[0052] In this embodiment, the top support 211 is formed as follows: Figure 1 The projection of the slide bar 110 onto the horizontal plane forms a cross-shaped structure, partially surrounding the slide bar 110. In other embodiments, the top support 211 can completely surround the slide bar 110. The diameter of the clearance space 214 at the axis is larger than the width of the slide bar 110 and the limiting part 140, and its height is higher than the limiting part 140, allowing the slide bar 110 and the limiting part 140 to move relative to the top support 211 within the clearance space 214. The bottom support 212 surrounds the outer circumferential surface of the slide bar 110 in the circumferential direction and extends laterally to the radially outer side of the slide bar 110, and can correspond to the support rod 120 as shown in the figure. Figure 1 The central cross-shaped section extends radially outward, with a second longitudinally penetrating shaft hole 215 formed at its center. The central support member 213 surrounds the outer circumferential surface of the slide rod 110 in the circumferential direction and extends radially outward in the transverse direction, with a third longitudinally penetrating shaft hole 216 formed at its center. The slide rod 110 passes through and mates with the second and third shaft holes 215 and 216, allowing the slide rod 110 to slide in connection with the lifting base frame 210. When the slide rod 110 rises, its upper part is accommodated within the clearance space 214.

[0053] In some other embodiments, a structure matching the guide rail is formed on the circumferential surface of the second and third axis holes 215 and 216. For example, when the guide rail is configured to protrude outward in the circumferential direction of the slide rod 110, grooves are provided on the circumferential surface of the second and third axis holes 215 and 216 in a matching manner. When the guide rail is configured to be recessed in the circumferential direction of the slide rod 110, sliders are provided on the circumferential surface of the second and third axis holes 215 and 216 in a matching manner, so that the lifting base 200 moves along the guide rail.

[0054] Combination Figure 4 As shown, multiple slide rails 220 are disposed on the sides of the top support 211, the middle support 213, and the bottom support 212. The lateral extension dimensions of the top support 211, the middle support 213, and the bottom support 212 increase sequentially. The hoisting base 200 is generally tapered, with a smaller top and a larger bottom. The upper ends of the multiple slide rails 220 converge at the top support 211, and the lower ends connect to the ends of the bottom support 212, causing the multiple slide rails 220 to gradually tilt radially outward from top to bottom towards the slide rod 110. The multiple slide rails 220 are located above the multiple support points 122 and correspond to the multiple support points 122. In this embodiment, the slide rails 220 are centrally symmetrically distributed, with four rails.

[0055] The slide 220 forms an elongated groove to accommodate the inner end of the upper part of the lever 310. The width of the elongated groove matches the width of the lever 310. The two side walls of the elongated groove form openings along the extension direction of the slide 220. A roller 320 is provided on the inner end of the lever 310. The roller 320 is attached to the slide 220, and the pin of the roller 320 passes through the openings on the two side walls of the slide 220 for mating installation. Thus, the lever 310 is connected to the slide 220 by the pin. The lever 310 can slide relative to the slide 220 along the extension direction of the slide 220 by the roller 320, and the lever 310 can rotate relative to the slide 220 in the longitudinal plane.

[0056] Combination Figure 4 As shown, the top of the hoisting base 200 is equipped with a hoisting hole 230, which facilitates the clamping of the equipment and connection of the load hanging device.

[0057] Combination Figure 1 As shown, multiple clamping components 300 are provided. In order to keep the clamped polycrystalline silicon ingots stable, the clamping device is equipped with at least 3 sets of clamping components 300, which are centrally symmetrically distributed around the support component 100. They correspond to multiple slides 220, and the number is the same as the number of slides 220. Preferably, there are 4 or 6 sets. In this embodiment, 4 sets of clamping components 300 are centrally symmetrically distributed.

[0058] Combination Figure 1 , Figure 2 and Figure 5 As shown, each clamping assembly 300 includes a lever 310, a roller 320, and a gripper 340. The lever 310 is hinged to the support assembly 100 to achieve the hinged connection of the clamping assembly 300 to the support assembly 100, and the upper end of the lever 310 is the linkage end of the clamping assembly 300. The gripper 340 is disposed at the lower end of the lever 310 and serves as the clamping end of the clamping assembly 300. A roller 320 is provided at the upper end of each lever 310.

[0059] Specifically, combined Figure 5As shown, the lever 310 is generally inverted L-shaped, with its upper end slidably connected to the slide rail 220 and its lower part having a fulcrum hole 313 for bolt assembly. The fulcrum part 122 has a hole structure for bolt assembly. The fulcrum hole 313 and the fulcrum part 122 are hinged by bolts, thereby hinged the lever 310 to the support rod 120. The lever 310 can rotate freely around the connection point with the support rod 120 at a certain angle.

[0060] The hinge point between the fulcrum 122, or lever 310, and the support assembly 100 divides the lever 310 into an upper torque rod 311 and a lower torque rod 312, with a length ratio greater than 1 between the upper torque rod 311 and the lower torque rod 312. The lever 310 rotates about the fulcrum 122 as its axis of rotation. As the lever 310 moves along the slide rail 220, it oscillates in the longitudinal plane, causing the gripper 340 located at the lower end of the lever 310 to move closer to or further away from the axis of the clamping device.

[0061] Specifically, in combination Figure 5 As shown, the upper torque rod 311 of the lever 310 includes a transverse torque section 3111 and a longitudinal torque section 3112. The inner end of the transverse torque section 3111 is connected to the slide rail 220 via a roller 320, extending from the slide rail 220 in a generally transverse direction to the outer side of the slide rail 220, and then forming a corner portion 3113 at a predetermined angle. Through the corner portion 3113, the longitudinal torque section 3112 extends in a generally longitudinal direction to the mounting slot of the support rod 120, and the fulcrum portion 122 corresponds to the fulcrum hole 313. The lower torque rod 312 extends downward from the fulcrum hole 313 along the direction of the longitudinal torque section 3112.

[0062] In this embodiment, the upper torque rod 311 of the lever 310 has a transverse torque segment 3111 and a longitudinal torque segment 3112 extending in different directions. The transverse torque segment 3111 and the longitudinal torque segment 3112 are at a predetermined angle, forming a corner portion 3113. This allows the upper end of the lever 310 to extend from the slide rail 220 outwards, pass through the corner portion 3113, and then extend downwards to the lower end of the lever 310. In this embodiment, the corner portion 3113 is preferably 90°, that is, the transverse torque segment 3111 and the longitudinal torque segment 3112 are set to be perpendicular to each other. In other embodiments, the angle of the corner portion 3113 can also be set to approximately 60-120° depending on the inclination angle of the slide rail 220, as long as the swinging motion of the lever 310 is smooth and flexible. A reinforcing rib is also provided at the corner portion 3113 to enhance the load-bearing capacity of the lever 310.

[0063] When the lifting base 200 is lifted upwards, the lever 310 moves downwards towards the slide rail 220, the upper torque rod 311 tilts outwards, and the outer end of the lateral torque section 3111 of the upper torque rod 311 tilts downwards, making the angle between the lateral torque section 3111 and the slide rail 220 smaller. When the lifting base 200 is lowered, the lever 310 moves upwards towards the slide rail 220, the upper torque rod 311 tilts inwards, and the angle between the lateral torque section 3111 and the slide rail 220 increases, gradually returning to its original position. Through the corner section 3113, the lever 310 moves along the slide rail 220 and has a certain swing space relative to the slide rail 220, making the swinging motion of the lever 310 flexible and stable.

[0064] In this embodiment, the connection between the lever 310 and the slide 220 to the fulcrum hole 313 forms an upper torque rod 311, and the connection from the fulcrum hole 313 to the lower end of the lever 310 forms a lower torque rod 312. The length ratio of the upper torque rod 311 to the lower torque rod 312 is greater than 1. Furthermore, by setting the bending part 123, the fulcrum part 122 is further positioned towards the lower side of the lever 310, thereby maximizing the length ratio of the upper and lower torque rods. By utilizing the lever principle, the clamping force is increased, and a smaller force is applied to the upper end of the lever 310 to enable the gripper 340 located at the lower end of the lever 310 to obtain a larger clamping force, thus achieving efficient and stable clamping operation capability.

[0065] During the clamping operation, the levers 310 of the multiple clamping components 300 swing synchronously under the drive of the lifting base 200, and the grippers 340 connected to the levers 310 move closer to each other or open.

[0066] Combination Figure 5 As shown, each clamping assembly 300 includes a jaw 340 comprising a jaw bar 341 connected to the lower end of a lever 310 and a jaw head 342 disposed inside the jaw bar 341. In this embodiment, a jaw connecting portion 330 is provided at the lower end of the lever 310. The jaw connecting portion 330 is formed as a sleeve, extending laterally and passing through the middle. One or more first jaw positioning holes for connecting with the jaw bar 341 are provided in the jaw connecting portion 330. When multiple first jaw positioning holes are provided, they are arranged in a distributed manner in the extending direction. Correspondingly, multiple second jaw positioning holes are formed on the jaw bar 341 in a laterally arranged manner. The jaw bar 341 passes through the sleeve, and the jaw 321 is connected and fixed to the jaw connecting portion 330 by fitting a pin with the first jaw positioning hole and the second jaw positioning hole. Furthermore, the jaw bar 341 moves back and forth within the sleeve, and the position of the jaw 340 in the lateral direction can be adjusted by adjusting the corresponding position of the first jaw positioning hole and the second jaw positioning hole through which the pin passes. Thus, the gripper 340 achieves the clamping distance adjustment function by moving back and forth within the sleeve through the gripper bar 341, and the gripper opening can be adjusted according to the required diameter of the silicon ingot to be clamped.

[0067] Combination Figure 5 As shown, a claw head 342 is installed on the inner end of the gripper 340. The claw head 342 is hinged to the claw bar 341 by bolts. The claw head 342 can rotate around the connecting bolt within a certain range and is set at any angle with the claw bar 341 in the longitudinal plane.

[0068] Combination Figure 5 As shown, a second shock-absorbing pad 343 is installed on the inner end face of the claw head 342. The second shock-absorbing pad 343 is preferably made of silicone or rubber. By setting the second shock-absorbing pad 343 on the end face of the claw head 342, the second shock-absorbing pad 343 is squeezed when the silicon ingot is clamped, forming a clamping surface that matches the shape of the silicon ingot surface. For example, when the silicon ingot is formed into a cylindrical shape, the second shock-absorbing pad 343 forms an arc shape, thereby forming a surface contact with the surface of the silicon ingot, rather than just a point contact or line contact. This increases the friction and also protects the surface of the silicon ingot, making the operation more stable and the applicability and application flexibility higher.

[0069] In some other embodiments, the inner end face of the claw 342 can form a predetermined arc, and the second shock-absorbing pad 343 matches the inner end face of the claw 342 to form a predetermined arc, which can be used for clamping circular silicon ingots and make better contact with the wall of the circular silicon ingot.

[0070] In this embodiment, the gripper 340 is detachably connected to the lever 310, and different grippers 340 can be disassembled and replaced to accommodate silicon ingots with different outer diameters and shapes.

[0071] Combination Figure 2 As shown, a hanging chain 400 connects the slide rod 110 and the lifting base frame 210. The hanging chain 400 is fixed to one of the slide rod 110 and the lifting base frame 210, and is detachably connected to the other of the slide rod 110 and the lifting base frame 210. In this embodiment, the hanging chain 400 is connected between the support rod 120 and the bottom support member 212 of the lifting base frame 210. One end is fixed to the support rod 120, and the other end can be hung on the hook 217 provided on the bottom support member 212. When the clamping device is in a non-clamping state or when the clamping operation is completed and the clamping device is lifted, the hanging chain 400 is hung on the hook 217 to prevent the lifting base 200 from moving upward; when performing the clamping operation, the hanging chain 400 is removed from the hook 217, allowing the lifting base 200 to move freely on the support assembly 100.

[0072] In this embodiment, the support assembly 100, the lifting base 200, and multiple clamping assemblies 300 are coaxially arranged, resulting in high stability. The lifting base 200 is supported by the support assembly 100 and moves longitudinally relative to the support assembly 100. Multiple clamping assemblies 300 are provided corresponding to the slide rails 220 of the lifting base 200. Each clamping assembly 300 is hinged to the fulcrum portion 122 of the support assembly 100 and can swing around the fulcrum portion 122. Furthermore, the upper end of each clamping component 300 is slidably connected to the lifting base 200. The upper ends can move closer or further apart as the lifting base 200 moves along the support component 100. Thus, by utilizing the lever principle, the lower ends of the clamping components 300 can be brought together or opened, enabling the clamping device to grip or release the clamped object. In addition, the length ratio of the upper and lower torque rods is maximized, increasing the clamping force under a certain pushing force applied to the upper end of the lever 310.

[0073] In this embodiment, four sets of clamping components 300 are provided and are evenly distributed in the circumferential direction. In other embodiments, depending on the actual clamping situation, they may also be non-uniformly distributed in the circumferential direction, with a specific distance between adjacent clamping components 300.

[0074] like Figure 6 As shown, when the clamping device is working, by lifting the lifting base 200, the upper end of the lever 310 connected to the slide rail 220 is pushed outward, causing the lever 310 to rotate around the bolt at the fulcrum 122. This causes the lever 310 to drive the jaws 340 connected to the lower end of the lever 310 to move towards the center, firmly clamping the silicon ingot to be clamped. The second shock-absorbing pad 343 set on the jaw head 342 and the surface of the object to be clamped are used to lift the object. This solution does not require an additional drive device to apply lateral force to the jaws; the clamping force of the jaw head 342 can be increased solely by the lever principle.

[0075] The slide rail 220 is used to mount the lever 310, which is driven by the slide rail 220 to swing. The structure is simple, easy to control, and has high stability.

[0076] After the silicon ingot or other clamped object is lowered, when lifting the clamping device, the hanging chain 400 is hung on the hook 217 set on the lifting base frame 210 to prevent the lifting base 200 from moving upward, thus preventing the clamp 340 from clamping the silicon ingot again, and the clamping device can be easily lifted.

[0077] The clamping device of this invention can be widely used for clamping silicon ingots of various regular or irregular shapes and outer diameters, such as cylindrical and cuboid shapes. It provides high-stability and high-strength clamping force to the silicon ingots. In particular, it can be adapted to assist in the hoisting and handling of round polycrystalline silicon ingots, thereby improving production efficiency and handling safety.

[0078] The following two application examples illustrate the usage process of the clamping device in this embodiment.

[0079] Example 1

[0080] In this embodiment, the load-bearing device is a gantry crane. The lifting base 200 is mounted on the slide rod 110 of the support assembly 100, and four sets of slide rails 220 are installed on the lifting base 200. Four support rods 120 are installed at the lower part of the support assembly 100, arranged in a cross shape. Clamping assemblies 300 are respectively installed at the ends of the four support rods 120, resulting in a total of four sets of clamping assemblies 300. The rollers 320 of the clamping assemblies 300 are installed within the corresponding slide rails 220.

[0081] Use clamping equipment to move the 600mm diameter and 300mm high round polycrystalline silicon ingots from the unloading trolley onto the ground pallet.

[0082] Install the clamping device on the gantry crane hook, attach the chain 400, and adjust the position of the four sets of claw bars 341 so that the spacing between the opposite claw heads 342 is 650mm-700mm. Lift the clamping device directly above the silicon ingot 500 and slowly lower it. Stop the descent when the first shock-absorbing pad 150 at the bottom of the clamping device support rod 120 contacts the upper surface of the silicon ingot 500. Remove the chain 400 from the hook 217 and start the gantry crane to lift the polycrystalline silicon ingot 500. Move the gantry crane to move the silicon ingot 500 above the pallet, then slowly lower it. When the bottom surface of the silicon ingot 500 contacts the pallet, continue lowering the gantry crane hook a short distance so that the lifting base 200 contacts the shock-absorbing part 130 on the support rod 120. Reattach the chain 400 to the hook 217 and start the gantry crane to lift the clamping device away from the polycrystalline silicon ingot, completing the handling operation.

[0083] It enables the handling of circular polycrystalline silicon ingots with a diameter of 600mm, a height of 300mm, and a weight of approximately 198kg.

[0084] Example 2

[0085] Example 2 is similar to Example 1 in that it has four support rods 120 and four clamping assemblies 300. In this example, the load-bearing device is the fork of a transfer forklift.

[0086] In this embodiment, the clamping device is installed at the front end of the fork fork of the transfer forklift to transport a round polycrystalline silicon ingot with a diameter of 800mm and a height of 250mm from the ingot casting workshop to the cutting machine tool in the cutting room.

[0087] Install the clamping device at the front end of the forklift's forks, attach the chain 400, and adjust the position of the four sets of claw bars 341 so that the distance between the two opposite claw heads 342 is 850mm-900mm. Raise the forklift's forks and adjust the forklift position so that the clamping device is directly above the silicon ingot 500. Slowly lower the forks until the first shock-absorbing pad 150 at the bottom of the clamping device's support rod 120 contacts the upper surface of the silicon ingot 500. Remove the chain 400 from the hook 217, raise the forks to lift the polycrystalline silicon ingot 500. Drive the forklift to the cutting machine in the cutting room, lower the forks, slowly place the polycrystalline silicon ingot on the cutting machine, attach the chain 400 to the hook 217, raise the forks until the bottom of the clamping device is away from the polycrystalline silicon ingot, and drive the forklift away from the cutting machine, waiting for the next handling operation. In this way, a round polycrystalline silicon ingot with a diameter of 800mm, a height of 250mm, and a weight of approximately 294kg can be handled.

[0088] This utility model provides a concept and method for a clamping device for handling circular polycrystalline silicon ingots. Many methods and approaches exist for implementing this technical solution; the above is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A clamping apparatus for handling of a circular polysilicon ingot, characterized in that, include: Lifting base (200) is used to connect to the load-bearing device; The support assembly (100) is slidably connected to the lifting base (200) and is capable of sliding relative to the lifting base (200) in the longitudinal direction; And three or more clamping components (300) arranged circumferentially around the support component (100). The three or more clamping components (300) are hinged to the support component (100) and have clamping ends and linkage ends. The clamping ends extend in a direction away from the hoisting base (200). The clamping ends of the three or more clamping components (300) together enclose a clamping space for clamping silicon ingot (500). The linkage ends of each support component (100) are slidably connected to the hoisting base (200). The support component (100) and the hoisting base (200) move in opposite directions or towards each other in the longitudinal direction, causing the clamping ends of the three or more clamping components (300) to rotate inward to reduce the clamping space or rotate outward to increase the clamping space.

2. The clamping device for handling of circular multicrystalline silicon ingots according to claim 1, characterized in that Each clamping assembly (300) includes a lever (310) and a gripper (340). The lever (310) is hinged to the support assembly (100) to achieve the clamping assembly (300) being hinged to the support assembly (100). The upper end of the lever (310) is the linkage end of the clamping assembly (300), and the gripper (340) is disposed at the lower end of the lever (310) and serves as the clamping end of the clamping assembly (300).

3. The clamping device for handling of circular multicrystalline silicon ingots according to claim 2, characterized in that The hinge point between the lever (310) and the support assembly (100) divides the lever (310) into an upper torque rod (311) and a lower torque rod (312), and the length ratio of the upper torque rod (311) and the lower torque rod (312) is greater than 1.

4. The clamping device for handling circular polycrystalline silicon ingots according to claim 3, characterized in that, The upper torque bar (311) includes a transverse torque section (3111), a longitudinal torque section (3112), and a corner section (3113) connecting the transverse torque section (3111) and the longitudinal torque section (3112). The inner end of the transverse torque section (3111) extends outward from the hoisting base (200), and after passing through the corner section (3113), forms the downward extending longitudinal torque section (3112).

5. The clamping device for handling circular polycrystalline silicon ingots according to claim 2, characterized in that, Each of the levers (310) is provided with a roller (320) at its upper end. The hoisting base (200) includes a hoisting base frame (210) and a plurality of slide rails (220) disposed on the hoisting base frame (210) and gradually inclined outward from top to bottom. The slide rails (220) are correspondingly disposed and slidably connected to the rollers (320).

6. The clamping device for handling of circular multicrystalline silicon ingots according to claim 5, characterized in that The support assembly (100) includes a slide rod (110) and a support rod (120). The slide rod (110) extends longitudinally and is slidably connected to the hoisting base (200). The support assembly (100) and the hoisting base (200) are slidably connected through the slide rod (110). The support rod (120) is correspondingly provided with each of the clamping assemblies (300), and the support rod (120) is laterally provided at the lower end of the slide rod (110) and extends radially outward from the slide rod (110). The support rod (120) is provided with a fulcrum portion (122) for hinged with the corresponding clamping assembly (300) so that the clamping assembly (300) is hinged to the support assembly (100).

7. The clamping device for handling of circular multicrystalline silicon ingots according to claim 6, characterized in that The support assembly (100) further includes a bending portion (123), which is formed at the end of the support rod (120) and bends toward the lower end of the lever (310), and the fulcrum portion (122) is disposed on the bending portion (123).

8. The clamping device for handling circular polycrystalline silicon ingots according to claim 6, characterized in that, The hoisting base frame (210) includes a top support (211), a bottom support (212) spaced below the top support (211), and a middle support (213) spaced between the top support (211) and the bottom support (212). The slide rail (220) is fixed to the top support (211), the middle support (213), and the bottom support (212). The bottom support member (212) has a second shaft hole (215) that runs longitudinally through it, and the middle support member (213) has a third shaft hole (216) that runs longitudinally through it. The slide rod (110) is movably inserted in the second shaft hole (215) and the third shaft hole (216) to achieve a sliding connection between the slide rod (110) and the hoisting base frame (210). The bottom of the top support (211) is provided with a longitudinally extending clearance space (214) for avoiding the upper part of the slide bar (110) moving upward.

9. The clamping device for handling circular polycrystalline silicon ingots according to claim 8, characterized in that, The upper end of the slide bar (110) is provided with a limiting part (140), which extends radially outward from the slide bar (110) and protrudes from the slide bar (110). When the hoisting base frame (210) moves upward until the middle support (213) abuts against the limiting part (140), the limiting part (140) restricts the relative movement of the hoisting base frame (210) and the support assembly (100).

10. The clamping device for handling circular polycrystalline silicon ingots according to claim 6, characterized in that, The gripper (340) includes a gripper bar (341) and a gripper head (342) disposed inside the gripper bar (341). The claw head (342) is hinged to the claw bar (341), and the claw head (342) can rotate freely relative to the claw bar (341); A gripper connecting part (330) is provided at the lower end of the lever (310), and a first gripper positioning hole is provided in the gripper connecting part (330). The claw bar (341) is arranged laterally to form a plurality of second claw positioning holes. The claw rod (341) is connected and fixed to the claw connecting part (330) by means of a pin engaging with the first claw positioning hole and the second claw positioning hole.

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