A small car for assisting the up and down hanging of a rethrowing barrel

Abstract

The utility model belongs to the single crystal silicon production auxiliary equipment technical field provides a kind of trolley for assisting the up and down hanging of auxiliary reinsertion barrel, it includes: car body, with platform;Support, fixedly connected in platform top surface middle part;Supporting mechanism, fixedly connected in the platform top surface of support one side, for supporting the bottom of reinsertion barrel;And clamping mechanism, connected on support, for clamping the barrel body of reinsertion barrel;Wherein, clamping mechanism and supporting mechanism are transmission connection, the former can be opened and closed automatically when the latter is influenced by reinsertion barrel self weight.This utility model can be automatically locked after being seated and automatically released after being lifted under the action of reinsertion barrel self weight by transmission connection's clamping mechanism and supporting mechanism, and the up and down hanging of reinsertion barrel can be realized without personnel intervention and assistance throughout, degree of automation is high, time is less, it is favorable to improve reinsertion efficiency and reduce crystal pulling cost, and safety is high, and operating personnel is not easy to be mechanically injured.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for monocrystalline silicon production, specifically to a trolley for hanging auxiliary feeding cylinders on the upper and lower parts. Background Technology

[0002] The Czochralski method is one of the main methods for pulling single-crystal silicon rods. This method involves placing silicon material into a quartz crucible in a single-crystal furnace, heating and melting the silicon material using a graphite heater, and then completing the pulling process through stages such as temperature control, crystal pulling, shoulder formation, shoulder rotation, equal diameter shaping, finishing, and furnace shutdown. To extend the single-crystal growth time to increase production capacity and reduce costs, the industry typically chooses to repeatedly add silicon material to a quartz crucible with limited capacity during the finishing stage to achieve continuous crystal pulling.

[0003] Currently, most single-crystal furnaces use refilling cylinders for refilling. After being fed at a fixed point, the refilling cylinder is loaded onto a trolley and transported to the single-crystal furnace requiring refilling. Then, with personnel assistance, an existing automatic chuck device removes the refilling cylinder from the trolley and suspends it on the single-crystal furnace (i.e., top hanging). After the silicon refilling is completed, personnel assist in transferring the refilling cylinder back onto the trolley (i.e., bottom hanging) to return it to the fixed point for a second feeding. This process is then repeated to achieve multiple refilling operations. All of these refilling cylinder top-and-bottom hanging operations require human assistance, resulting in low automation, long processing time, severely impacting refilling efficiency and crystal pulling costs. Furthermore, it is prone to collisions that can cause mechanical injuries to operators. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a trolley for assisting in the hanging of re-casting cylinders, which solves the problem that the existing re-casting cylinder hanging operations all require human assistance, have low automation levels, and take a long time, seriously affecting re-casting efficiency and crystal pulling costs, and are also prone to collisions that can cause mechanical injuries to operators.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A trolley for assisting in the upper and lower attachment of a re-throwing tube includes:

[0007] The vehicle body has a platform;

[0008] The bracket is fixedly connected to the middle of the top surface of the platform;

[0009] A support mechanism, fixedly connected to the top surface of the platform on one side of the bracket, is used to support the bottom of the re-throwing cylinder; and

[0010] A clamping mechanism, connected to the bracket, is used to clamp the body of the re-throwing cylinder;

[0011] The clamping mechanism is connected to the supporting mechanism, and the former can automatically open and close when the latter is affected by the weight of the re-throwing cylinder itself.

[0012] In one embodiment disclosed in this application, the support mechanism includes a base, a disc base, and a tray, which are arranged sequentially from bottom to top;

[0013] The lower end of the base is fixedly connected to the top surface of the platform, the tray is elastically and vertically connected to the upper end of the base, and the pallet is connected to the tray to support the re-throwing cylinder;

[0014] The clamping mechanism is connected to the disk base via a transmission connection.

[0015] In one embodiment disclosed in this application, the base has two layers, an upper layer and an lower layer. The lower layer is fixedly welded to the top surface of the platform, and the upper layer is connected to the lower layer by four circumferentially distributed support rods to leave a lifting space between the two layers.

[0016] The upper plate is fitted with four circumferentially distributed sliding sleeves, each of which is staggered from the support rod.

[0017] The bottom surface of the disc base is provided with four circumferentially distributed sliding rods, and the four sliding rods slide through the four sliding sleeves in a one-to-one manner.

[0018] A spring abuts against the top surface of the upper plate and the bottom surface of the tray base, and the spring is located in the center of the area enclosed by the four sliding rods.

[0019] The tray has a recess in the center of its top surface to match the bottom of the refill cylinder;

[0020] The four slide bars are divided into two pairs along the width of the platform, and the clamping mechanism is connected to the pair of slide bars closest to the support.

[0021] In one embodiment disclosed in this application, a circular first recessed area is provided in the middle of the top surface of the upper plate for limiting one end of the spring;

[0022] The bottom surface of the disc base has a circular second recessed area in the middle, which is used to limit the other end of the spring.

[0023] In one embodiment disclosed in this application, the tray is detachably connected to the tray base.

[0024] In one embodiment disclosed in this application, the clamping mechanism includes a first jaw and a second jaw with identical structures, which are respectively rotatably connected to a pin on the bracket and arranged opposite to each other to form a clamping space of variable size directly above the tray;

[0025] A torsion spring is fitted on the pin between the first and second jaws, with both ends of the torsion spring extending toward the clamping space to abut against the first and second jaws respectively.

[0026] The ends of the first and second grippers away from the clamping space are connected to a pair of slide bars near the bracket via the same transmission mechanism.

[0027] In one embodiment disclosed in this application, the transmission mechanism includes an I-shaped link and two cables. The I-shaped link has a pair of parallel first sub-links and a second sub-link perpendicularly connected to them.

[0028] Each of the first sub-links has its end away from the second sub-link connected vertically to the lower end of a slide bar. One end of each cable is fixedly connected to one end of the second sub-link, and the other end extends upward and, after passing over the fixed pulley provided on the bracket, is connected to the end of the first or second gripper away from the clamping space.

[0029] In one embodiment disclosed in this application, the vehicle body is provided with two pairs of wheels connected to the platform below;

[0030] One pair of wheels is a fixed wheel, and the other pair of wheels is a swivel wheel with a brake pedal.

[0031] In one embodiment disclosed in this application, the vehicle body is further provided with push-pull armrests;

[0032] The push-pull armrest is connected to a platform directly above the pair of casters.

[0033] In one embodiment disclosed in this application, a support plate is provided in the middle of the bottom surface of the platform for fitting with the top surface of the support platform of the AGV trolley so that the AGV trolley can carry the trolley to the fixed point of the feeding cylinder.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] 1. Through the clamping and support mechanisms connected by phase transmission, the re-casting cylinder can be automatically locked after being seated and automatically released after being lifted under its own gravity. The entire process can be completed without human intervention or assistance, which can realize the hanging of the re-casting cylinder. It has a high degree of automation, takes less time, and is conducive to improving re-casting efficiency and reducing crystal pulling costs. Moreover, it is safe and the operators are not likely to be injured by machinery.

[0036] 2. By detachably connecting to the tray base, trays of different diameters can be replaced to accommodate reloading cylinders of different sizes, thus expanding the applicability of the support mechanism.

[0037] 3. Using AGVs to carry the carts allows for rapid transfer along pre-designed routes, further improving reinvestment efficiency and saving workers' labor. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0040] Figure 2 for Figure 1 A magnified schematic diagram of section A in the middle;

[0041] Figure 3 A three-dimensional structural diagram of the support mechanism and the clamping mechanism;

[0042] Figure 4 A three-dimensional structural diagram of the supporting mechanism;

[0043] Figure 5 This is a schematic diagram of the three-dimensional structure of the vehicle body. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0050] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0051] See Figures 1-5 As shown, this utility model provides a trolley for assisting in the upper and lower hanging of a re-throwing cylinder, comprising:

[0052] The vehicle body is 100, and it has a platform 110;

[0053] The bracket 200 is fixedly connected to the middle of the top surface of the platform 110;

[0054] The support mechanism 300 is fixedly connected to the top surface of the platform 110 on one side of the bracket 200, and is used to support the bottom of the re-throwing cylinder 600; and

[0055] The clamping mechanism 400 is connected to the bracket 200 and is used to clamp the body of the re-throwing cylinder 600;

[0056] The clamping mechanism 400 is connected to the support mechanism 300 through a transmission mechanism, and the former can automatically open and close when the latter is affected by the weight of the re-throwing cylinder 600 itself.

[0057] Specifically, the support mechanism 300 includes a base 310, a disc base 320, and a tray 330, which are arranged sequentially from bottom to top; the lower end of the base 310 is fixedly connected to the top surface of the platform 110, the disc base 320 is elastically and vertically connected to the upper end of the base 310, and the tray 330 is connected to the disc base 320 to support the re-throwing cylinder 600; the clamping mechanism 400 is drivenly connected to the disc base 320. When the silicon material refilling in the refilling cylinder 600 is completed and it needs to be lowered, the existing automatic chuck device (not shown in the figure) is used to lift the refilling cylinder 600 to detach it from the single crystal furnace. It is then moved above the tray 330 and gradually lowered until the bottom of the refilling cylinder 600 contacts the tray 330. Under the weight of the refilling cylinder 600 itself, the tray 330 presses down, the tray base 320 moves down and accumulates elastic potential energy, which drives the clamping mechanism 400 to close automatically to clamp the cylinder body of the refilling cylinder 600. This, together with the support mechanism 300, secures the refilling cylinder 600. The refilling cylinder 600 is then safely and quickly rotated by the vehicle body 100. The cylinder is transported to a fixed location for feeding in preparation for the next refill. When the refill cylinder 600 needs to be hung, the vehicle body 100 transfers the fed refill cylinder 600 to the single crystal furnace that needs to be refilled. Then, the automatic chuck moves above the vehicle body 100 and lifts the refill cylinder 600. During this process, the downward pressure on the tray 330 gradually decreases and returns to zero due to the lifting of the refill cylinder 600. The release of elastic potential energy causes the tray 320 to move upward, driving the clamping mechanism 400 to open and automatically release the cylinder body of the refill cylinder 600, thereby removing the refill cylinder 600 from the vehicle body 100. Then, the automatic chuck continues to suspend the refill cylinder 600 on the single crystal furnace. In other words, through the clamping mechanism 400 and the support mechanism 300 connected by phase transmission, the re-casting cylinder 600 can be automatically locked after being seated and automatically released after being lifted under its own gravity. The entire process can be completed without human intervention or assistance, which is highly automated, takes less time, helps to improve re-casting efficiency and reduce crystal pulling costs, and is also highly safe, as operators are less likely to suffer mechanical injuries.

[0058] See Figure 3 and Figure 4As shown, the base 310 has two shelves, upper and lower. The lower shelf 311 is fixedly welded to the top surface of the platform 110. The upper shelf 313 is connected to the lower shelf 311 by four circumferentially distributed support rods 312 to leave a lifting space between the two shelves. Four circumferentially distributed sliding sleeves 314 are embedded in the upper shelf 313, and each sliding sleeve 314 is staggered from the support rods 312. The bottom surface of the plate 320 is provided with four circumferentially distributed sliding rods 321, and the four sliding rods 321 slide through the four sliding sleeves 314 in a one-to-one manner. A spring 340 abuts against the top surface of the upper plate 313 and the bottom surface of the tray 320. The spring 340 is located in the center of the area enclosed by the four sliding rods 321 (the elastic lifting and lowering of the tray 320 is achieved by the extension and contraction of the spring 340 and the sliding of the sliding rods 321 in the sliding sleeve 314); a recess is provided in the middle of the top surface of the tray 330 to match the bottom of the re-throwing cylinder 600; the four sliding rods 321 are divided into two pairs along the width direction of the platform 110, and the clamping mechanism 400 is connected to the pair of sliding rods 321 near the support 200. After the bottom of the refill cylinder 600 is placed in the recess in the middle of the top surface of the tray 330, the tray 330 is pressed down by the weight of the refill cylinder 600 itself. The tray base 320 moves down to compress the spring 340 and accumulate elastic potential energy. The slide rod 321 slides down along the sliding sleeve 314, driving the clamping mechanism 400 to close and automatically clamp the cylinder body of the refill cylinder 600. When the refill cylinder 600 is lifted, the weight of the refill cylinder 600 on the tray 330 gradually decreases and returns to zero. The spring 340 resets to release the elastic potential energy, thereby pushing the tray base 320 to move up. The slide rod 321 slides up along the sliding sleeve 314, driving the clamping mechanism 400 to open and automatically release the cylinder body of the refill cylinder 600.

[0059] To prevent the spring 340 from skewing or shifting during compression and reset, a circular first recessed area is provided in the center of the top surface of the upper plate 313 to limit one end of the spring 340; a circular second recessed area is provided in the center of the bottom surface of the base 320 to limit the other end of the spring 340. That is, the two ends of the spring 340 abut against the first and second recessed areas respectively.

[0060] The tray 330 has four countersunk holes 331 evenly distributed around the circumference of the recess. The tray 330 is detachably connected to the tray base 320 by screws (not shown in the figure) passing through the countersunk holes 331. In this way, trays 330 of different diameters can be replaced to adapt to different sizes of re-throwing cylinders 600, thus expanding the applicability of the support mechanism 300.

[0061] See Figure 2 and Figure 3As shown, the clamping mechanism 400 includes a first jaw 410 and a second jaw 420 with identical structures. They are rotatably connected to a pin 210 provided on the support 200 and arranged opposite to each other to form a clamping space of variable size directly above the tray 330. A torsion spring (not shown in the figure) is fitted on the pin 210 between the first jaw 410 and the second jaw 420. Both ends of the torsion spring extend into the clamping space to abut against the first jaw 410 and the second jaw 420 respectively. The ends of the first jaw 410 and the second jaw 420 away from the clamping space are connected to a pair of slide rods 321 near the support 200 through the same transmission mechanism 500. Specifically, the transmission mechanism 500 includes an inverted link 510 and two cables 520. The inverted link 510 has a pair of parallel first sub-links 511 and a second sub-link 512 perpendicularly connected to them. The end of each first sub-link 511 away from the second sub-link 512 is perpendicularly connected to the lower end of a slide bar 321. One end of each cable 520 is fixedly connected to one end of the second sub-link 512, and the other end extends upward and passes around the fixed pulley 220 provided on the bracket 200 before connecting to the end of the first gripper 410 or the second gripper 420 away from the clamping space (for example, by hooking the hook 521 onto the ring 411 provided on the outside of the end of the first gripper 410 or the second gripper 420 away from the clamping space). When the base 320 moves downward, the slide rod 321 slides downward along the sliding sleeve 314, driving the second sub-link 512 downward through the first sub-link 511. The cable 520 is taut and pulled downward, and through the fixed pulley 220, it is redirected to pull the first gripper 410 and the second gripper 420 to rotate around the pin 210 and move closer to each other. The torsion spring is compressed and deformed, and the clamping space becomes smaller, thereby automatically clamping the body of the re-throwing cylinder 600. When the base 320 moves upward, the slide rod 321 slides upward along the sliding sleeve 314, driving the second sub-link 512 upward through the first sub-link 511. The cable 520 is relaxed, the torsion spring returns to its original position, and the first gripper 410 and the second gripper 420 rotate in opposite directions around the pin 210, increasing the clamping space, thereby automatically releasing the body of the re-throwing cylinder 600. The torsion spring reset also keeps the cable 520 in a taut state, thus keeping the cable 520 always locked on the fixed pulley 220 and preventing it from falling off. In addition, some protective measures (such as the existing anti-detachment buckle) can be set to prevent the cable 520 from falling off the fixed pulley 220, which will not be elaborated here.

[0062] The vehicle body 100 is equipped with two pairs of wheels 120 connected to the platform 110 below. One pair of wheels 120 are fixed wheels, and the other pair of wheels 120 are omnidirectional wheels with brake pedals. Pressing the brake pedal of the omnidirectional wheel can lock the entire vehicle body 100, ensuring the stability of the vehicle when the reloading cylinder 600 is being loaded and unloaded.

[0063] The vehicle body 100 is also equipped with a push-pull handle 130, which is connected to a platform 110 directly above a pair of casters. In this way, it is more convenient for workers to move the vehicle by pushing and pulling the handle 130.

[0064] See Figure 5 As shown, a support plate 111 is provided in the middle of the bottom surface of the platform 110, which is used to fit against the top surface of the support platform of the AGV trolley (not shown in the figure) so that the AGV trolley can carry the trolley to the fixed point for feeding material into the refilling cylinder 600. After the refilling cylinder 600 is hung, the worker holds the push-pull handle 130 to transfer the trolley to the AGV trolley station, uses a PDA to call for transfer on the system, and after receiving the transfer information, the AGV trolley runs to the station, automatically enters the bottom of the trolley and raises its support platform to fit against the support plate 111, carries the trolley to the fixed point for feeding material into the refilling cylinder 600 according to its planned travel route, and then puts it down. Then the worker adds a certain amount of silicon material into the refilling cylinder 600, and finally the AGV trolley carries the trolley to the single crystal furnace that needs to be refilled and puts it down for the next hanging. In other words, by using AGVs to carry the carts, the carts can be quickly transferred along the designed route, further improving the efficiency of reinvestment and saving workers' physical strength.

[0065] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A trolley for assisting in the upper and lower hanging of a re-throwing cylinder, characterized in that, include: The vehicle body has a platform; The bracket is fixedly connected to the middle of the top surface of the platform; A support mechanism is fixedly connected to the top surface of the platform on one side of the bracket to support the bottom of the re-throwing cylinder; and A clamping mechanism, connected to the bracket, is used to clamp the body of the re-throwing cylinder; The clamping mechanism is connected to the supporting mechanism, and the former can automatically open and close when the latter is affected by the weight of the re-throwing cylinder itself.

2. The trolley for hanging the auxiliary re-throwing cylinder according to claim 1, characterized in that: The support mechanism includes a base, a disc base, and a tray, which are arranged sequentially from bottom to top; The lower end of the base is fixedly connected to the top surface of the platform, the tray is elastically and vertically connected to the upper end of the base, and the pallet is connected to the tray to support the re-throwing cylinder; The clamping mechanism is connected to the disk base via a transmission connection.

3. The trolley for hanging the auxiliary re-throwing cylinder according to claim 2, characterized in that: The base has two layers, upper and lower. The lower layer is fixedly welded to the top surface of the platform, and the upper layer is connected to the lower layer by four evenly distributed circumferential support rods to leave a lifting space between the two layers. The upper plate is fitted with four circumferentially distributed sliding sleeves, each of which is staggered from the support rod. The bottom surface of the disc base is provided with four circumferentially distributed sliding rods, and the four sliding rods slide through the four sliding sleeves in a one-to-one manner. A spring abuts against the top surface of the upper plate and the bottom surface of the tray base, and the spring is located in the center of the area enclosed by the four sliding rods. The tray has a recess in the center of its top surface to match the bottom of the refill cylinder; The four slide bars are divided into two pairs along the width of the platform, and the clamping mechanism is connected to the pair of slide bars closest to the support.

4. The trolley for hanging the auxiliary re-throwing cylinder according to claim 3, characterized in that: The upper plate has a circular first recessed area in the middle of its top surface, which is used to limit one end of the spring; The bottom surface of the disc base has a circular second recessed area in the middle, which is used to limit the other end of the spring.

5. The trolley for hanging the auxiliary re-throwing cylinder according to any one of claims 2 to 4, characterized in that, The tray is detachably connected to the tray base.

6. The trolley for hanging the auxiliary re-throwing cylinder according to claim 3 or 4, characterized in that: The clamping mechanism includes a first jaw and a second jaw with the same structure. They are rotatably connected to the pins provided on the bracket and arranged opposite to each other to form a clamping space of variable size directly above the tray. A torsion spring is fitted on the pin between the first and second jaws, with both ends of the torsion spring extending toward the clamping space to abut against the first and second jaws respectively. The ends of the first and second grippers away from the clamping space are connected to a pair of slide bars near the bracket via the same transmission mechanism.

7. The trolley for hanging the auxiliary re-throwing cylinder according to claim 6, characterized in that: The transmission mechanism includes an irregular connecting rod and two cables. The irregular connecting rod has a pair of parallel first sub-connecting rods and a second sub-connecting rod perpendicularly connected to them. Each of the first sub-links has its end away from the second sub-link connected vertically to the lower end of a slide bar. One end of each cable is fixedly connected to one end of the second sub-link, and the other end extends upward and, after passing over the fixed pulley provided on the bracket, is connected to the end of the first or second gripper away from the clamping space.

8. The trolley for hanging the auxiliary re-throwing cylinder according to any one of claims 1 to 4, characterized in that: The vehicle body is equipped with two pairs of wheels connected to the platform below; One pair of wheels is a fixed wheel, and the other pair of wheels is a swivel wheel with a brake pedal.

9. The trolley for hanging the auxiliary re-throwing cylinder according to claim 8, characterized in that: The vehicle body is also equipped with push-pull handrails; The push-pull armrest is connected to a platform directly above the pair of casters.

10. The trolley for hanging the auxiliary re-throwing cylinder according to claim 1 or 9, characterized in that, The platform has a support plate in the middle of its bottom surface, which is used to fit against the top surface of the AGV trolley's support platform so that the AGV trolley can carry the trolley to the fixed point of the feeding cylinder.

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