Graphite boat lifting device and graphite boat cleaning system

Abstract

The utility model discloses a graphite boat lifting device and a graphite boat cleaning system.The graphite boat lifting device comprises a support and a pair of mechanical arms, the two mechanical arms are movably connected to the support in the first direction so as to adjust the distance between the two mechanical arms, the two mechanical arms are arranged above a cleaning tank, and hollow parts are arranged at the ends, facing the cleaning tank, of the two mechanical arms; and the hollow part can be sleeved on a boat lug of the graphite boat when the mechanical arm lifts the graphite boat. According to the graphite boat lifting device, the hollowed-out part is arranged on the mechanical arm, when the mechanical arm moves towards the graphite boat in the cleaning tank under the operation of the movable support, when the hollowed-out part of the mechanical arm stretches into the cleaning tank, the hollowed-out part can be arranged on a boat lug of the graphite boat located in the cleaning tank in a sleeving mode, and compared with point-surface contact of a hook and the boat lug, the graphite boat can be lifted out of the cleaning tank. The hollowed-out part is in surface-to-surface contact with the boat ear, so that a good matching relationship is formed, and the boat ear can be effectively prevented from sliding off from the hollowed-out part.

Description

Technical Field

[0001] The present application relates to the field of solar cell processing, and particularly to a graphite boat lifting device and a graphite boat cleaning system. Background Art

[0002] In the related art, silicon nitride adheres to the graphite boat during the preparation of solar cells. To facilitate the subsequent preparation of solar cells, the graphite boat usually needs to be cleaned, including pickling and water washing steps.

[0003] During the cleaning process of the graphite boat, the lifting device usually uses a hook to hang the graphite boat and then puts the graphite boat into the cleaning tank for cleaning. However, when the lifting device lifts the graphite boat out of the cleaning tank, the hook will be wetted by acid solution or water. Thus, the graphite boat may slip off the hook during the lifting process, resulting in damage to the graphite boat. Summary of the Utility Model

[0004] Embodiments of the present application disclose a graphite boat lifting device and a graphite boat cleaning system for improving the stability of the lifting device in hanging the graphite boat.

[0005] To achieve the above object, the present application discloses a graphite boat lifting device, including:

[0006] A bracket;

[0007] A pair of robotic arms, the two robotic arms are movably connected to the bracket in a first direction so that the distance between the two robotic arms is adjustable, the two robotic arms are arranged above the cleaning tank in a second direction, and hollow portions are provided at the ends of the two robotic arms facing the cleaning tank, and the hollow portions are configured to sleeve the lug ears of the graphite boat when the robotic arms lift the graphite boat;

[0008] The first direction intersects with the second direction.

[0009] As an optional implementation manner, the robotic arm includes an arm main body and a hanging plate, the arm main body is movably connected to the bracket, the hanging plate is arranged at the end of the arm main body facing the cleaning tank, and the hollow portion is provided on the hanging plate.

[0010] As an optional implementation manner, the robotic arm further includes a sensor, the sensor is arranged on the hanging plate, and the sensor is configured to detect the contact situation between the hanging plate and the graphite boat in the cleaning tank.

[0011] As an alternative embodiment, the robotic arm further includes a telescopic structure. The telescopic structure connects the arm body and the hanging plate. The telescopic structure is electrically connected to the sensor, and is configured to drive the hanging plate to telescopically move relative to the arm body according to the contact condition detected by the sensor.

[0012] As an alternative embodiment, the hanging plate includes a first end and a second end along the second direction. The first end faces away from the cleaning tank along the second direction and is connected to the arm body. The second end is lengthened, and the lengthened part of the second end is 3 cm - 7 cm. The sensor is disposed at the second end.

[0013] As an alternative embodiment, the hanging plate and the arm body are detachably connected.

[0014] As an alternative embodiment, the hanging plate is made of an anti-corrosion material or an anti-corrosion material is coated on the hanging plate.

[0015] As an alternative embodiment, the bracket includes a fixed seat and a movable seat. The movable seat is movably connected to the fixed seat along the second direction, and the two robotic arms are movably connected to the movable seat along the first direction.

[0016] As an alternative embodiment, the shape of the hollowed-out portion is adapted to the shape of the boat ear of the graphite boat.

[0017] In a second aspect, the present application also discloses a graphite boat cleaning system, including a cleaning tank and the graphite boat lifting device as described in the first aspect;

[0018] The cleaning tank is disposed below the graphite boat lifting device along the second direction.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows:

[0020] The present application discloses a graphite boat lifting device and a graphite boat cleaning system. The graphite boat lifting device includes a bracket and a pair of robotic arms. The two robotic arms are movably connected to the bracket in a first direction to adjust the distance between the two robotic arms. The two robotic arms are disposed above the cleaning tank, and a hollow portion is provided at one end facing the cleaning tank. The hollow portion can be sleeved on the boat ears of the graphite boat when the robotic arms lift the graphite boat. By providing a hollow portion on the robotic arms, when the robotic arms move towards the graphite boat in the cleaning tank under the operation of the movable bracket and the hollow portion of the robotic arms extends into the cleaning tank, the hollow portion can be sleeved on the boat ears of the graphite boat located in the cleaning tank. Compared with the point-to-surface contact between the hook and the boat ears, the surface-to-surface contact between the hollow portion and the boat ears forms a good matching relationship, which can effectively prevent the boat ears from slipping out of the hollow portion. In addition, the robotic arms on both sides of the graphite boat clamp the graphite boat, which can prevent the graphite boat from shaking during the lifting process and further prevent the graphite boat from falling out of the hollow portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Structural schematic diagram of the graphite boat lifting device disclosed in the embodiment of the present application;

[0023] Figure 2 First structural schematic diagram of the robotic arm disclosed in the embodiment of the present application;

[0024] Figure 3 Second structural schematic diagram of the robotic arm disclosed in the embodiment of the present application;

[0025] Figure 4 Three-dimensional view of the second structure of the robotic arm disclosed in the embodiment of the present application;

[0026] Figure 5 Structural schematic diagram of the graphite boat cleaning system disclosed in the embodiment of the present application.

[0027] Description of the reference numerals:

[0028] 100, graphite boat lifting device; 1, bracket; 11, fixed seat; 12, movable seat; 2, robotic arm; 2a, hollow portion; 21, arm main body; 22, hanging plate; 22a, first end; 22b, second end. 3, telescopic structure; 31, fixed rod; 32, movable rod; 200, cleaning tank; 300, graphite boat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0030] In the present application, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0031] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

[0032] In addition, the terms "installation", "setting", "provided with", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0033] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the related art, silicon nitride will be attached to the graphite boat during the preparation of solar cells. In order to facilitate the subsequent preparation of solar cells, it is usually necessary to clean the graphite boat, mainly including two steps: pickling and water washing. During cleaning, the graphite boat is usually hung on the hook of the boat lifting device, and then the graphite boat is first put into the cleaning tank for pickling and then for water washing. Since the hook on the boat lifting device usually adopts a convex column structure, the contact area between the hook and the boat ear of the graphite boat is small. For example, when a cylindrical hook contacts the boat ear of the graphite boat, it is usually a point-to-surface contact. If the boat lifting device gets contaminated with the cleaning liquid when transporting the graphite boat, it is easy for the hook and the boat ear of the graphite boat to slip, and even the graphite boat may slip off the hook, resulting in damage to the graphite boat.

[0035] Based on this, the present application discloses a graphite boat lifting device and a graphite boat cleaning system. The graphite boat lifting device is used to improve the mounting effect of the lifting device on the graphite boat, thereby reducing the probability of the graphite boat being damaged due to falling.

[0036] The technical solution of the present application will be further described below in conjunction with embodiments and drawings.

[0037] In the first aspect, please refer to Figure 1 , the present application discloses a graphite boat lifting device 100, including a bracket 1 and a pair of robotic arms 2. The two robotic arms 2 are movably connected to the bracket 1 along a first direction X, so that the distance between the two robotic arms 2 is adjustable, so that the distance between the two robotic arms 2 can be adjusted to match the length of the graphite boat to be mounted. The two robotic arms 2 are supported by the bracket 1, so that the two robotic arms 2 are located above the cleaning tank along a second direction Y. A hollow portion 2a is provided at one end of each of the two robotic arms 2 facing the cleaning tank, and the hollow portion 2a is configured to be sleeved on the lug of the graphite boat when the robotic arm 2 lifts the graphite boat. Wherein, the first direction X intersects the second direction Y.

[0038] In the graphite boat lifting device 100 disclosed in the present application, by providing the hollow portion 2a on the robotic arm 2, when the robotic arm 2 mounts the graphite boat, the hollow portion 2a on the robotic arm 2 can be sleeved on the lug of the graphite boat, so that the inner wall surface of the hollow portion 2a contacts the outer peripheral surface of the lug, forming a surface-to-surface contact, thereby effectively increasing the contact area between the hollow portion 2a and the lug. Moreover, when the hollow portion 2a is sleeved on the outer periphery of the lug of the graphite boat, the hollow portion 2a can only be removed from the lug along the first direction X. Therefore, even if the lug of the graphite boat slides relative to the hollow portion 2a, it cannot slide out of the hollow portion 2a, so as to avoid the situation of the graphite boat falling. In addition, the two robotic arms 2 have a certain clamping force on the graphite boat along the first direction X, so as to avoid the situation that the robotic arms 2 fall off the lug due to the movement of the two robotic arms 2 along the first direction X.

[0039] In order to enable the hollow portion 2a to be more stably sleeved on the lug of the graphite boat, optionally, the shape of the hollow portion 2a can be adapted to the shape of the lug of the graphite boat. For example, the lug of the graphite boat is usually stepped, so the shape of the hollow portion 2a can be stepped, so that the graphite boat can be stably sleeved in the hollow portion 2a.

[0040] It can be understood that the shape and size of the hollow portion 2a are roughly matched with the shape and size of the lug of the graphite boat, that is, there may be a gap when the hollow portion 2a is sleeved on the lug of the graphite boat, so as to facilitate the hollow portion to be sleeved on the lug.

[0041] Optionally, there may be multiple pairs of robotic arms 2, and all of these multiple pairs of robotic arms can move on the bracket. By providing multiple pairs of robotic arms 2 on the bracket 1 in this application, the graphite boat lifting device 100 can mount multiple graphite boats at one time, so as to improve the transportation efficiency when the graphite boat lifting device 100 transports graphite boats.

[0042] In some embodiments, the bracket 1 includes a fixed seat 11 and a movable seat 12. Among them, the first direction X can be the length direction of the movable seat 12, and the second direction Y can be the height direction of the fixed seat 11. The movable seat 12 is movably connected to the fixed seat 11 along the second direction Y, and two robotic arms 2 are movably connected to the movable seat 12 along the first direction X. In some examples, the bracket 1 can be a gantry, and the gantry includes a beam and two support rods for supporting at both ends of the beam. Then, the movable seat 12 can be the beam, the fixed seat 11 can be the support rod, and the two robotic arms 2 are movably arranged on the beam, and the beam is movably arranged on the support rod, so that the beam, the robotic arms 2, and the support rod can all move. It can be understood that the first direction X can be the length direction of the beam, and the second direction Y can be the height direction of the support rod.

[0043] In some other examples, the bracket 1 can be a cantilever beam frame, and the cantilever beam frame includes a beam and a single support rod. One end of the beam is movably connected to the support rod, and the single support rod forms a unilateral support for the beam to form a cantilever structure, and the robotic arm 2 is movably connected to the beam.

[0044] In this way, through the movement of the bracket 1 itself and the movement of the robotic arm 2 relative to the bracket 1, the movement of the robotic arm 2 is made more flexible, so as to facilitate the insertion of the hollow portion 2a of the robotic arm 2 into the boat ear of the graphite boat.

[0045] Take Figure 1 the example shown in the figure. The direction indicated by X is the first direction X, and the direction indicated by Y is the second direction Y.

[0046] In some other embodiments, the bracket 1 can be a fixed bracket 1, and the robotic arm 2 is telescopically connected to the bracket 1. The robotic arm 2 moves relative to the bracket 1 itself. For example, the robotic arm 2 has a multi-link structure, and the robotic arm 2 moves towards or away from the cleaning tank by the expansion or folding between the rods, so as to set the hollow portion 2a on the boat ear of the graphite boat and lift the graphite boat out of the cleaning tank. Another example is that the robotic arm 2 can telescopically move by itself, and the hollow portion 2a is extended into the cleaning tank and the graphite boat is lifted by the elongation and contraction of the robotic arm 2 itself.

[0047] Please refer to Figure 2, in some embodiments, the robotic arm 2 includes an arm body 21 and a hanging plate 22. The arm body 21 is movably connected to the bracket 1. The hanging plate 22 is provided at one end of the arm body 21 facing the cleaning tank, and the hanging plate 22 is provided with a hollow portion 2a. Specifically, the arm body 21 is movably connected to the movable seat 12. In some examples, the hanging plate 22 is detachable relative to the arm body 21. Considering that the boat lifting device of the present application can be applied not only to the boat washing process in production, but also to other processes to realize the handling of the graphite boat, such as the drying process of the graphite boat after washing. In order to make the hanging plate 22 suitable for high-temperature environments, the hanging plate 22 needs to be removed from the arm body 21 to facilitate the replacement of the hanging plate 22 made of high-temperature resistant materials. In addition, the hanging plate 22 is detachable relative to the arm body 21, and different specifications of hollow portions 2a can be provided on the hanging plate 22 according to different specifications of boat ears, so that the robotic arm 2 can be used to mount graphite boats of different specifications, with a wider applicability. Of course, in other examples, the hanging plate 22 can also be integrally provided with the arm body 21 to facilitate the installation of the robotic arm 2.

[0048] Since the hanging plate 22 needs to be pickled, in order to improve the acid corrosion resistance of the hanging plate 22, optionally, the hanging plate 22 can be made of acid-resistant corrosion materials or directly coated with acid-resistant corrosion materials on the hanging plate 22. In the first example, the hanging plate 22 can be made of fiberglass, carbon fiber material or polytetrafluoroethylene material, etc. In the second example, acid-resistant corrosion paint can be coated on the surface of the plate, or corrosion-resistant metal can be plated. In the third example, acid-resistant corrosion materials can be coated on acid-resistant corrosion plates. In this way, the acid corrosion resistance effect of the hanging plate 22 can be improved to prevent the situation where the graphite boat falls due to the damage of the hanging plate 22.

[0049] Considering that when the hanging plate mounts the boat ears of the graphite boat, usually the two robotic arms 2 first move along the first direction X to adjust the distance between the two robotic arms 2 to be approximately matched with the length of the graphite boat. If the distance between the two robotic arms 2 is not greater than the length of the graphite boat, the robotic arm 2 may press the graphite boat when moving downward, and if not stopped in time, it may cause the hanging plate 22 to damage the graphite boat. Based on this, in some embodiments, the robotic arm 2 further includes a sensor (not shown), and the sensor can be provided on the hanging plate 22. The sensor is configured to detect the contact situation between the hanging plate 22 and the graphite boat in the cleaning tank. That is, when the robotic arm 2 moves downward along the second direction Y towards the graphite boat in the cleaning tank, the position relationship between the hanging plate 22 and the graphite boat in the cleaning tank can be judged by the sensor to avoid the situation where the graphite boat is damaged due to the excessive downward pressure of the robotic arm 2.

[0050] Optionally, the sensor can be, but is not limited to, a pressure sensor or an infrared distance sensor, etc. For example, if the sensor is an infrared sensor, the infrared distance sensor can be arranged on the arm main body 21, and the distance between the hanging plate 22 and the graphite boat can be judged by judging the distance between the arm main body 21 and the graphite boat, so as to judge whether the hanging plate 22 presses down too much towards the graphite boat. When the sensor is a pressure sensor, the pressure sensor can be arranged on the hanging plate 22. When the hanging plate 22 contacts the graphite boat to generate pressure, the pressure can be transmitted to the pressure sensor through the hanging plate 22, so as to judge whether the hanging plate 22 contacts the graphite boat.

[0051] Further, when the sensor detects that the hanging plate 22 presses on the graphite boat, the graphite boat lifting device 100 can issue an alarm to remind the technician to pause the lifting operation. Alternatively, the sensor can feedback to the lifting device and control the graphite boat lifting device 100 to automatically stop. Or, when the sensor detects the pressing of the boat, the robotic arm 2 automatically adjusts the positional relationship between the hanging plate 22 and the graphite boat, so that the hollow portion 2a on the hanging plate 22 is sleeved into the boat ear of the graphite boat along the first direction X.

[0052] Please refer to Figure 3 and Figure 4 Optionally, the robotic arm 2 further includes a telescopic structure 3. The telescopic structure 3 connects the arm main body 21 and the hanging plate 22. The telescopic structure 3 is electrically connected to the sensor and is configured to drive the hanging plate 22 to expand and contract relative to the arm main body 21 according to the contact situation detected by the sensor. Specifically, when the sensor detects that the hanging plate 22 slightly contacts the graphite boat or the hanging plate 22 is about to press on the graphite boat, the sensor transmits a control signal to the telescopic structure 3, and the hanging plate 22 is retracted by controlling the telescopic structure 3 to avoid damage to the graphite boat caused by the hanging plate 22 continuing to press down. Then, after the two robotic arms 2 adjust the distance, the robotic arm 2 moves downward along the second direction Y until the hanging plate 22 is located on the side of the boat ear in the first direction X, and then the robotic arm 2 moves along the first direction X so that the hollow portion 2a of the hanging plate 22 is sleeved on the boat ear.

[0053] In some examples, please refer to Figure 4 The telescopic structure 3 can include a driving mechanism (not shown), a fixed rod 31 and a movable rod 32. The fixed rod 31 is arranged on the arm main body 21, the movable rod 32 is arranged on the hanging plate 22, and the driving mechanism drives the movable rod 32 to move relative to the fixed rod 31, thereby driving the hanging plate 22 to move relative to the arm main body 21. If the moving direction is the second direction Y, the hanging plate 22 can be contracted or extended relative to the arm main body 21. In other examples, the telescopic structure 3 can include a driving mechanism, a chute and a slide rail. The chute is arranged on the arm main body 21, the slide rail is arranged on the hanging plate 22, and the driving mechanism drives the slide rail to slide in the chute, thereby driving the hanging plate 22 to move relative to the arm main body 21. If the moving direction is the second direction Y, the hanging plate 22 can be contracted or extended relative to the arm main body 21.

[0054] Among them, the driving mechanism can be, but is not limited to, a motor, an air pump, an oil pump, etc., and the present application does not make specific limitations here.

[0055] Optionally, the hanging plate 22 includes a first end 22a and a second end 22b along the second direction Y. The first end 22a faces away from the cleaning tank along the second direction Y and is connected to the arm main body 21. The second end 22b is extended towards the cleaning tank, and the sensor is arranged at the second end 22b. By extending the second end 22b of the hanging plate 22 in the present application, when the hanging plate 22 is pressed down, the second end 22b can contact the graphite boat in advance, so that the sensor is triggered in advance, avoiding the situation that the sensor alarm is triggered only after the manipulator 2 is completely pressed down and the graphite boat is damaged.

[0056] Optionally, the extended part of the second end 22b can be 3 cm - 7 cm, for example, it can be 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, etc., and the present application does not make specific limitations here. By making the hanging plate 22 extend 3 cm - 7 cm more downward in the present application, when the hanging plate 22 is pressed down, the second end 22b can contact the graphite boat in advance, so that the sensor is triggered in advance, and at the same time, it is avoided that the extended part of the hanging plate is too long, preventing the situation that the hollow part 2a of the hanging plate 22 is blocked by the bottom of the cleaning tank before being sleeved on the boat ear of the graphite boat.

[0057] In a second aspect, please refer to Figure 5 , the present application also discloses a graphite boat cleaning system, which includes the graphite boat lifting device 100 and the cleaning tank 200 disclosed in the first aspect, wherein the cleaning tank 200 is arranged below the graphite boat lifting device 100 along the second direction Y. In the process of cleaning the graphite boat 300 in the graphite boat cleaning system disclosed in the present application, the graphite boat lifting device 100 is used for handling. During the handling process, the hollow part 2a on the manipulator 2 of the graphite boat lifting device 100 can be sleeved on the boat ear of the graphite boat 300, so that the inner wall surface of the hollow part contacts the outer peripheral surface of the boat ear, forming surface-to-surface contact, thereby increasing the contact area between the hollow part 2a and the boat ear. Moreover, when the hollow part 2a is sleeved on the outer periphery of the boat ear of the graphite boat 300, the hollow part 2a can only be taken out from the boat ear along the first direction X. Therefore, even if the boat ear of the graphite boat 300 slides relative to the hollow part 2a, it cannot slide out of the hollow part, so as to avoid the situation of the graphite boat 300 falling. In addition, the two manipulators 2 have a certain clamping force on the graphite boat 300 along the first direction X, thereby reducing the probability that the manipulators 2 fall off the boat ear due to the movement of the two manipulators 2 along the first direction X.

[0058] The above has introduced in detail the graphite boat lifting device and the graphite boat cleaning system disclosed in the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the graphite boat lifting device and the graphite boat cleaning system of the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A graphite boat lifting device, characterized in that, Comprising: A bracket; A pair of robotic arms, the two robotic arms are movably connected to the bracket along a first direction so that the distance between the two robotic arms is adjustable, the two robotic arms are arranged above the cleaning tank along a second direction, and hollowed-out portions are provided at one ends of the two robotic arms facing the cleaning tank, and the hollowed-out portions are configured to sleeve the lug ears of the graphite boat when the robotic arms lift the graphite boat; The first direction intersects with the second direction.

2. The graphite boat lifting device according to claim 1, characterized in that, The robotic arm includes an arm body and a hanging plate, the arm body is movably connected to the bracket, the hanging plate is arranged at one end of the arm body facing the cleaning tank, and the hollowed-out portion is provided on the hanging plate.

3. The graphite boat lifting device according to claim 2, characterized in that, The robotic arm further includes a sensor, the sensor is arranged on the hanging plate, and the sensor is configured to detect the contact situation between the hanging plate and the graphite boat in the cleaning tank.

4. The graphite boat lifting device according to claim 3, characterized in that, The robotic arm further includes a telescopic structure, the telescopic structure connects the arm body and the hanging plate, the telescopic structure is electrically connected to the sensor, and the telescopic structure is configured to drive the hanging plate to expand and contract relative to the arm body according to the contact situation detected by the sensor.

5. The graphite boat lifting device according to claim 4, characterized in that, The hanging plate includes a first end and a second end along the second direction, the first end faces away from the cleaning tank along the second direction and is connected to the arm body, the second end is extended, and the extended part of the second end is 3 cm - 7 cm, and the sensor is arranged at the second end.

6. The graphite boat lifting device according to claim 2, characterized in that, The hanging plate and the arm body are detachably connected.

7. The graphite boat lifting device according to claim 2, characterized in that, The hanging plate is made of an anti-corrosion material or an anti-corrosion material is coated on the hanging plate.

8. The graphite boat lifting device according to claim 1, characterized in that, The bracket includes a fixed seat and a movable seat, the movable seat is movably connected to the fixed seat along the second direction, and the two robotic arms are movably connected to the movable seat along the first direction.

9. A graphite boat lifting device according to any one of claims 1-8, characterized in that, The shape of the hollowed-out portion is adapted to the shape of the lug ears of the graphite boat.

10. A graphite boat cleaning system, characterized in that, Comprising a cleaning tank and a graphite boat lifting device according to any one of claims 1-9; The cleaning tank is arranged below the graphite boat lifting device along the second direction.

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