A silicon carbide crystal cylinder transfer device

Abstract

The present invention discloses a silicon carbide crystal cylinder transfer device, which includes a first gripper and a second gripper arranged oppositely, and two lifting devices. The first gripper and the second gripper are respectively used for gripping both ends of the silicon carbide crystal cylinder; both the first gripper and the second gripper include a mounting seat, two oppositely arranged gripping arms and an opening / closing driving mechanism. Among them, the two oppositely arranged gripping arms are respectively hinged at both ends of the mounting seat; the opening / closing driving mechanism is used to drive the two gripping arms to approach or move away from each other. By providing the first gripper, the second gripper and the two lifting devices, the gripping weight of the silicon carbide crystal cylinder can be increased, and the gripping weight can reach 30-50t; moreover, the distance and height between the first gripper and the second gripper can be adjusted through the two lifting devices, so as to adjust the inclination angle of the silicon carbide crystal cylinder when it is lifted out, so as to break the silicon carbide crystal cylinder at the crack, reduce the resistance suffered by the silicon carbide crystal cylinder when it is lifted out, and thus enable the silicon carbide crystal cylinder to be lifted out of the furnace body in sections.

Description

Technical Field

[0001] The present invention relates to the technical field of silicon carbide cylinder lifting tools, and particularly to a silicon carbide cylinder transfer device. Background Art

[0002] In the traditional production process of silicon carbide, the silicon carbide cylinder is cleaned, broken, and lifted out in small pieces manually. After cooling, workers need to enter the furnace body to clean the insulation material and part of the yellow skin around the cylinder, dig out the silicon carbide cylinder, then use tools such as an electric pickaxe to break the upper part of the silicon carbide cylinder, and then manually empty the graphite inside the silicon carbide cylinder. Finally, the silicon carbide cylinder is broken into small pieces and lifted out of the smelting furnace by a bridge crane. However, some furnace bodies are arranged in a trough-shaped space below the ground, with high temperature and a small amount of water gas and hydrogen sulfide remaining. The traditional method of lifting the silicon carbide cylinder has a series of disadvantages such as low work efficiency, high labor intensity of workers, poor production environment, and safety and occupational health risks. Moreover, there are strict time control requirements for furnace charging, smelting, and tapping. Among them, tapping must be completed within 9 days. The traditional method is not applicable to the lifting operation of silicon carbide cylinders in extra-large furnaces above 30000KVA.

[0003] Patent (Application No.: 201922448046.0) discloses a silicon carbide bulk material transfer device, which includes: a double-arm manipulator. The double-arm manipulator has two grippers each formed by at least one first link hinged by a joint shaft. One end of each of the two grippers is hinged together through a first rotating shaft, and the two grippers are symmetrically arranged with respect to the first rotating shaft; at least four second links, which are respectively hinged to the two grippers through second rotating shafts, and the at least four second links are symmetrically arranged with respect to the first rotating shaft; a power device, the distance between the power device and the first rotating shaft is adjustable, and a lifting lug is provided thereon; at least four third links, the at least four third links are grouped in pairs, and one end of each pair of the two third links is respectively hinged to the second links symmetric with respect to the first rotating shaft through a third rotating shaft, the third rotating shaft is pivotally provided on the power device, and the other end of each pair of the two third links is hinged together through a fourth rotating shaft, and the two third links in each pair are symmetrically arranged with respect to the fourth rotating shaft.

[0004] The silicon carbide bulk material transfer device in the above solution can only transfer silicon carbide bulk materials. Before transfer, manual crushing of the silicon carbide cylinder is required, resulting in high labor intensity and low work efficiency of workers. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a silicon carbide cylinder transfer device to solve the technical problems that in the prior art, when using a silicon carbide bulk material transfer device, manual crushing of the silicon carbide cylinder is required in advance, resulting in high labor intensity and low work efficiency of workers.

[0006] To achieve the above technical objectives, the technical solution of the present invention provides a silicon carbide crystal cylinder transfer device, including a first gripper and a second gripper arranged opposite to each other, and two lifting devices arranged in one-to-one correspondence with the first gripper and the second gripper. The first gripper and the second gripper are respectively used to grip both ends of the silicon carbide crystal cylinder, and the lifting device is used to lift the corresponding first gripper or the second gripper; both the first gripper and the second gripper include:

[0007] A mounting seat;

[0008] Two gripping arms arranged opposite to each other, which are respectively hinged at both ends of the mounting seat. An inner wall at the bottom end of each of the two gripping arms forms a supporting surface for placing the silicon carbide crystal cylinder;

[0009] An opening and closing driving mechanism for driving the two gripping arms to respectively rotate simultaneously around their hinge joints with the mounting seat, so as to make the two gripping arms approach or move away from each other, thereby realizing the opening or closing action of the first gripper and the second gripper.

[0010] Further, the opening and closing driving mechanism includes two telescopic driving members respectively hinged at both ends of the mounting seat, and the output end of the telescopic driving member is hinged to the gripping arm on the same side.

[0011] Further, the telescopic driving member is a cylinder, a hydraulic cylinder or an electric push rod.

[0012] Further, a connecting plate is hinged on the mounting seat of the first gripper, a pin is fixedly arranged on the mounting seat of the second gripper, an adjusting groove is formed along the length direction of the connecting plate, and the pin movably passes through the adjusting groove.

[0013] Further, a lifting ring is fixedly arranged on the top of the mounting seat.

[0014] Further, two lifting rings are symmetrically arranged on the top of the mounting seat.

[0015] Further, a heat insulation pad is fixedly arranged on the inner wall of the gripping arm.

[0016] Further, the heat insulation pad is an asbestos mesh heat insulation pad.

[0017] Further, the supporting surface is an arc-shaped supporting surface that matches the shape of the outer surface of the silicon carbide crystal cylinder.

[0018] Further, after the first gripper or the second gripper is completely closed, the included angle between the bottom ends of the two gripping arms and the connecting line to the center of the silicon carbide crystal cylinder located inside them does not exceed 50°.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] (1) By providing the first gripper and the second gripper, as well as two lifting devices respectively corresponding to the first gripper and the second gripper, the grasping weight of the silicon carbide cylinder can be increased, and the grasping weight can reach 30 - 50t. Moreover, through the two lifting devices, the distance and height between the first gripper and the second gripper can be adjusted, so as to adjust the inclination angle of the silicon carbide cylinder when it is lifted out, break the silicon carbide cylinder from the crack, reduce the resistance suffered by the silicon carbide cylinder when it is lifted out, and thus enable the silicon carbide cylinder to be lifted out of the furnace body in sections.

[0021] (2) On the inner walls at the bottoms of the two gripper arms in the first gripper and the second gripper, a support surface for placing the silicon carbide cylinder is formed, so that the silicon carbide cylinder can be naturally placed on this support surface, avoiding the squeezing force of the gripper arms on the silicon carbide cylinder and preventing the silicon carbide cylinder from being broken during grasping or lifting. Brief Description of the Drawings

[0022] Figure 1 is the front view of a silicon carbide cylinder transfer device provided by the present invention;

[0023] Figure 2 is the left view of a silicon carbide cylinder transfer device provided by the present invention;

[0024] Figure 3 is the schematic diagram of the state when the first gripper or the second gripper in this embodiment is opened to a certain angle;

[0025] Figure 4 is the schematic diagram of the state when the first gripper or the second gripper in this embodiment starts to close;

[0026] Figure 5 is the schematic diagram of the state when the first gripper or the second gripper in this embodiment closes to the joint surface of the silicon carbide cylinder and the bottom filling material;

[0027] Figure 6 is the schematic diagram of the state after the first gripper or the second gripper in this embodiment is completely closed;

[0028] Figure 7 is the working schematic diagram of a silicon carbide cylinder transfer device provided by the present invention. Detailed Description of the Embodiment

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The present invention provides a silicon carbide crystal cylinder transfer device, the structure of which is as shown in Figure 1 Figure 1, including a first gripper 1 and a second gripper 2 arranged oppositely, and two lifting devices 3 arranged corresponding to the first gripper 1 and the second gripper 2 one by one. The first gripper 1 and the second gripper 2 are respectively used to grip both ends of the silicon carbide crystal cylinder 4, and the lifting device 3 is used to lift the corresponding first gripper 1 or second gripper 2. Both the first gripper 1 and the second gripper 2 include a mounting base 11, two oppositely arranged gripper arms 12 and an opening and closing driving mechanism 13. Among them, the two oppositely arranged gripper arms 12 are respectively hinged at both ends of the mounting base 11, and a support surface for placing the silicon carbide crystal cylinder 4 is formed on the inner wall of the bottom ends of the two gripper arms 12. The silicon carbide crystal cylinder can be naturally placed on this support surface, avoiding the squeezing force of the gripper arms 12 on the silicon carbide crystal cylinder and causing the silicon carbide crystal cylinder to break during the gripping or lifting process. The opening and closing driving mechanism 13 is used to drive the two gripper arms 12 to rotate simultaneously around their hinge points with the mounting base 11 respectively, so as to realize the mutual approach or separation of the two gripper arms 12, thereby realizing the opening or closing action of the first gripper 1 and the second gripper 2.

[0031] In the silicon carbide crystal cylinder transfer device, by setting the first gripper 1 and the second gripper 2, and two lifting devices 3 arranged corresponding to the first gripper 1 and the second gripper 2 one by one, the gripping weight of the silicon carbide crystal cylinder can be increased, and the gripping weight can reach 30 - 50t. And, the distance and height between the first gripper 1 and the second gripper 2 can be adjusted by the two lifting devices 3, so as to adjust the inclination angle of the silicon carbide crystal cylinder when it is lifted out, so as to break the silicon carbide crystal cylinder from the crack, reducing the resistance suffered by the silicon carbide crystal cylinder when it is lifted out, thereby enabling the silicon carbide crystal cylinder to be lifted out of the furnace body in sections. In addition, a support surface for placing the silicon carbide crystal cylinder 4 is formed on the inner wall of the bottom ends of the two gripper arms 12 in the first gripper 1 and the second gripper 2, so that the silicon carbide crystal cylinder can be naturally placed on this support surface, avoiding the squeezing force of the gripper arms 12 on the silicon carbide crystal cylinder and causing the silicon carbide crystal cylinder to break during the gripping or lifting process.

[0032] According to the preliminary experimental data, the weights of the first gripper 1 and the second gripper 2 are both about 20t, and the friction force generated at the end face when the segmented silicon carbide crystal cylinder is lifted is considered according to 0.1 times of the lifting weight. Therefore, the lifting weight of the lifting device 3 can be selected as 75t, 100t or 120t. As a specific embodiment, the lifting device 3 is a bridge crane.

[0033] As a preferred embodiment, as shown in Figure 2As shown, the opening and closing drive mechanism 13 includes two telescopic drive members 131 respectively hinged to both ends of the mounting base 11, and the output end of the telescopic drive member 131 is hinged to the gripper arm 12 on the same side. As a specific embodiment, the opening and closing drive mechanism 13 is electrically connected to a control switch. As a specific embodiment, the telescopic drive member 131 is a cylinder, a hydraulic cylinder or an electric push rod.

[0034] As a specific embodiment, the lifting appliance 3 can be a overhead crane, and the overhead crane can be controlled in a dedicated operation room or by an operation switch electrically connected thereto. By respectively operating the operation switches of the two overhead cranes, the two overhead cranes can be respectively controlled to change the distance between the two lifting appliances 3. As a specific embodiment, the telescopic drive member 131 is electrically connected to a dedicated control switch for controlling the operation of the telescopic drive member 131. A control console is provided in the operation room, and the control switch can be provided on the control console for controlling the operation of the telescopic drive member 131.

[0035] As a preferred embodiment, a connecting plate 14 is hinged to the mounting base 11 of the first gripper 1, a pin 15 is fixedly provided on the mounting base 11 of the second gripper 2, an adjustment groove 140 is formed in the connecting plate 14 along its length direction, and the pin 15 movably passes through the adjustment groove 140. When operating the two lifting appliances 3 to adjust the horizontal distance and vertical height between the first gripper 1 and the second gripper 2, the horizontal distance and vertical height between the first gripper 1 and the second gripper 2 can be estimated by the position of the pin 15 in the adjustment groove 140, so as to adjust the silicon carbide cylinder to a proper inclination angle, which serves as an indication. In other embodiments, the pin 15 can also be a slider slidably connected to the connecting plate, and the slider is hinged to the second gripper 2.

[0036] It should be noted that after the silicon carbide synthesis process is completed, due to the sharp temperature difference change caused by cooling watering, the silicon carbide cylinder will naturally penetrate and break into several small sections of silicon carbide cylinders, with a length generally of 3 - 5 m and a weight of 30 - 50 t. Therefore, the horizontal distance between the first gripper 1 and the second gripper 2 is 3 - 5 m, that is, the length of the connecting plate 14 is 3 - 5 m. If there are large silicon carbide cylinders, they can be broken into sections by a woodpecker breaker, and the remaining scattered blocks are transported to the grading yard by an auxiliary bridge crane.

[0037] As a preferred embodiment, a lifting ring 16 is fixedly arranged at the top of the mounting base 11, which is convenient for cooperating with the hook of the lifting tool 3. As a preferred embodiment, two lifting rings 16 are symmetrically arranged at the top of the mounting base 11. It should be noted that in other embodiments, in addition to the lifting ring 16, other connecting structures (such as hooks) can also be arranged on the mounting base 11 for cooperating with the hook of the lifting tool 3.

[0038] As a preferred embodiment, a heat insulation pad 17 is fixedly arranged on the inner wall of the gripping arm 12. As a specific embodiment, the heat insulation pad 17 is an asbestos mesh heat insulation pad.

[0039] As a preferred embodiment, after the first gripper 1 or the second gripper 2 is completely closed, the included angle between the bottom ends of the two gripping arms 12 and the connecting line to the center of the silicon carbide cylinder located inside them does not exceed 50°, so as to prevent the silicon carbide cylinder located in the first gripper 1 or the second gripper 2 from being broken due to a large extrusion force from the gripping arm 12.

[0040] As a preferred embodiment, a tip 120 is fixedly arranged at the bottom end of the gripping arm 12, which is convenient for the first gripper 1 or the second gripper 2 to insert into the filler at the bottom layer of the silicon carbide cylinder by its own gravity.

[0041] To facilitate the understanding of this solution, the following combines Figures 1-6 to elaborate on the working principle of the present invention in detail:

[0042] After the silicon carbide synthesis process is completed, affected by the sharp temperature difference change caused by cooling watering, the silicon carbide cylinder will naturally penetrate and break into several small sections of silicon carbide cylinders. As Figure 3 shown, control the two lifting tools 3 to place the first gripper 1 and the second gripper 2 directly above the two ends of the small section of silicon carbide cylinder respectively. Control the control switch to make the opening and closing drive mechanism 13 act to adjust the first gripper 1 and the second gripper 2 to an appropriate opening angle, and then control the two lifting tools 3 to lower the first gripper 1 and the second gripper 2; as Figure 4 shown, when the first gripper 1 and the second gripper 2 fall to the upper surface of the bottom layer material, control the control switch again to make the opening and closing drive mechanism 13 act to close the first gripper 1 and the second gripper 2; as Figure 5As shown, after the first gripper 1 and the second gripper 2 are closed to the joint surface of the silicon carbide crystal cylinder and the bottom filler, while controlling the two lifting devices 3 to drive the first gripper 1 and the second gripper 2 to descend, the control switch is manipulated to close the first gripper 1 and the second gripper 2 until the first gripper 1 and the second gripper 2 completely hold the silicon carbide crystal cylinder. At this time, the first gripper 1 and the second gripper 2 are completely closed; as Figure 6 shown, after the first gripper 1 and the second gripper 2 are completely closed, the two lifting devices 3 are manipulated to drive the first gripper 1 and the second gripper 2 to rise, so as to lift the silicon carbide crystal cylinder to separate the silicon carbide crystal cylinder from the filler, and place the silicon carbide crystal cylinder on an external transfer vehicle for transportation. The silicon carbide crystal cylinder is transported by the silicon carbide crystal cylinder transfer vehicle. Each section of the transfer vehicle can place a section of the crystal cylinder. After being fully loaded, it is transported to the grading site. Ensure the normal cycle of 4 furnace charges within 36 days, shorten the tapping time, reduce the labor intensity of workers, and improve the working environment.

[0043] Since when the silicon carbide crystal cylinder cools and breaks into several small sections of silicon carbide crystal cylinders, the cracks between adjacent two small sections of silicon carbide crystal cylinders may not completely penetrate the silicon carbide crystal cylinder, or the cracks are narrow and the crack shapes are irregular. After the first gripper 1 and the second gripper 2 respectively hold both ends of the silicon carbide crystal cylinder, directly lifting the silicon carbide crystal cylinder by controlling the two lifting devices 3 will be blocked by other (both ends of this silicon carbide crystal cylinder) silicon carbide crystal cylinders. By setting the two lifting devices 3 in cooperation with the first gripper 1 and the second gripper 2, when the silicon carbide crystal cylinder is lifted out of the furnace body, the silicon carbide crystal cylinder is kept in an inclined state to be lifted out so as to break the silicon carbide crystal cylinder from the crack, as Figure 7 shown, and the height of the first gripper 1 and the second gripper 2 can be adjusted by the two lifting devices 3, so that the inclination angle of the silicon carbide crystal cylinder when being lifted out can be adjusted, so as to reduce the obstruction of the silicon carbide crystal cylinders at both ends to this silicon carbide crystal cylinder, and enable this silicon carbide crystal cylinder to be smoothly lifted out.

[0044] A silicon carbide crystal cylinder transfer device provided by the present invention has the following beneficial effects:

[0045] (1) By setting the first gripper 1 and the second gripper 2, and two lifting devices 3 corresponding to the first gripper 1 and the second gripper 2 one by one, the grasping weight of the silicon carbide crystal cylinder can be increased, and the grasping weight can reach 30 - 50t; moreover, the distance and height between the first gripper 1 and the second gripper 2 can be adjusted by the two lifting devices 3, so that the inclination angle of the silicon carbide crystal cylinder when being lifted out can be adjusted, so as to break the silicon carbide crystal cylinder from the crack, reduce the resistance suffered by the silicon carbide crystal cylinder when being lifted out, and thus enable the silicon carbide crystal cylinder to be lifted out of the furnace body in sections;

[0046] (2) An inner wall at the bottom end of each of the two gripping arms 12 of the first gripper 1 and the second gripper 2 forms a support surface for placing the silicon carbide cylinder 4, so that the silicon carbide cylinder can be naturally placed on this support surface, avoiding the squeezing force of the gripping arm 12 on the silicon carbide cylinder and causing the silicon carbide cylinder to break during gripping or lifting;

[0047] (3) A connecting plate 14 is hinged on the mounting seat 11 of the first gripper 1, and a pin 15 is fixedly arranged on the mounting seat 11 of the second gripper 2. An adjustment slot 140 is formed in the connecting plate 14 along its length direction, and the pin 15 movably passes through the adjustment slot 140. When controlling the two lifting devices 3 to adjust the lateral distance and vertical height of the first gripper 1 and the second gripper 2, the lateral distance and vertical height of the first gripper 1 and the second gripper 2 can be estimated through the position of the pin 15 in the adjustment slot 140, so as to adjust the silicon carbide cylinder to a suitable inclination angle, playing an indicating role;

[0048] (4) After the first gripper 1 or the second gripper 2 is completely closed, the included angle between the bottom ends of the two gripping arms 12 and the connecting line to the center of the silicon carbide cylinder located inside does not exceed 50°, so as to avoid the silicon carbide cylinder located in the first gripper 1 or the second gripper 2 being subjected to a large squeezing force from the gripping arm 12 and causing the silicon carbide cylinder to break.

[0049] The above specific embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A silicon carbide crystal cylinder transfer device, characterized in that, It includes a first gripper and a second gripper which are oppositely arranged, and two spreaders respectively arranged in one-to-one correspondence with the first gripper and the second gripper. The first gripper and the second gripper are respectively used for gripping both ends of a silicon carbide cylinder, and the spreader is used for lifting the corresponding first gripper or the second gripper; both the first gripper and the second gripper include: A mounting seat; Two oppositely arranged gripper arms, which are respectively hinged at both ends of the mounting seat. Inner walls at the bottoms of the two gripper arms are respectively formed with a support surface for placing the silicon carbide cylinder; and An opening and closing driving mechanism, which is used for driving the two gripper arms to respectively rotate around their hinge joints with the mounting seat simultaneously, so as to make the two gripper arms approach or move away from each other, thereby realizing the opening or closing action of the first gripper and the second gripper; A connecting plate is hinged on the mounting seat of the first gripper, a pin is fixedly arranged on the mounting seat of the second gripper, an adjusting groove is formed in the connecting plate along its length direction, the pin movably passes through the adjusting groove, and a lifting ring is fixedly arranged on the top of the mounting seat.

2. The silicon carbide crystal cylinder transfer device according to claim 1, characterized in that, The opening and closing driving mechanism includes two telescopic driving members respectively hinged at both ends of the mounting seat, and the output end of the telescopic driving member is hinged with the gripper arm on the same side.

3. The silicon carbide crystal cylinder transfer device according to claim 2, characterized in that, The telescopic driving member is a cylinder, a hydraulic cylinder or an electric push rod.

4. The silicon carbide crystal cylinder transfer device according to claim 1, characterized in that, Two lifting rings are symmetrically arranged on the top of the mounting seat.

5. The silicon carbide crystal cylinder transfer device according to claim 1, characterized in that, A heat insulation pad is fixedly arranged on the inner wall of the gripper arm.

6. The silicon carbide crystal cylinder transfer device according to claim 5, characterized in that, The heat insulation pad is an asbestos mesh heat insulation pad.

7. The silicon carbide crystal cylinder transfer device according to claim 1, characterized in that, The support surface is an arc-shaped support surface that matches the shape of the outer surface of the silicon carbide cylinder.

8. The silicon carbide crystal cylinder transfer device according to claim 7, characterized in that, After the first gripper or the second gripper is completely closed, the included angle between the bottom ends of the two gripper arms and the connecting line to the center of the silicon carbide cylinder located inside them does not exceed 50°.

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