Single crystal furnace and automatic lifting hook device thereof

Abstract

The utility model relates to a single crystal furnace and an automatic lifting hook device thereof, the single crystal furnace comprises a radial locking mechanism and an axial sliding mechanism, the radial locking mechanism comprises a locking piece and a locking channel arranged along the axial direction, the locking piece is configured to move along the radial direction to enter or exit from the locking channel, and the axial sliding mechanism comprises an outer fixed rod and an inner sliding rod which are arranged along the axial direction; the outer fixed rod is provided with positioning tooth grooves, the positioning tooth grooves comprise a first positioning tooth groove and a second positioning tooth groove, the inner sliding rod is provided with matching teeth which are opposite to and meshed with the positioning tooth grooves in the axial direction, and the inner sliding rod is configured to move in the axial direction under jacking of the plug when the plug is inserted into the locking channel; therefore, the automatic lifting hook device is switched between the hooking state and the unhooking state. In the hooking state, the matching teeth are meshed with the first positioning tooth grooves, the inner sliding rod presses the locking piece in the radial direction so that the locking piece can intrude into the locking channel and lock the plug, in the unhooking state, the matching teeth are meshed with the second positioning tooth grooves, and the inner sliding rod releases the locking piece in the radial direction so that the locking piece can loosen the plug.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic module processing, and in particular to a single crystal furnace and an automatic hook device thereof. Background Art

[0002] Monocrystalline silicon is the core component of photovoltaic modules, among which the Czochralski method is the main method for producing monocrystalline silicon. The main production process of the Czochralski method includes loading, melting, seeding, shoulder release, shoulder rotation, equal diameter, and finishing. In order to reduce the production cost of monocrystalline silicon produced by the Czochralski method, multiple loading and crystal pulling technology is usually used to produce monocrystalline silicon, and multiple feedings and a single furnace are used to pull multiple monocrystalline silicon. However, it is often necessary to lift the barrel 3-4 times for one feeding, and each time the barrel is lifted, it is necessary to manually climb to the work site to complete the unhooking and hooking. The operation is labor-intensive and inefficient. Summary of the invention

[0003] Based on this, it is necessary to provide a single crystal furnace and an automatic hook device thereof to address the problems of low feeding efficiency and high labor cost in the process of producing single crystal silicon by the direct pulling single crystal method.

[0004] The present application proposes an automatic hook device for automatically hooking and unhooking a plug, the automatic hook device comprising:

[0005] A radial locking mechanism, the radial locking mechanism comprising a locking member and a locking channel arranged along the axial direction, the locking channel is used for the plug to be inserted, the locking member is configured to be able to move in the radial direction and at least partially enter the locking channel or withdraw from the locking channel;

[0006] An axial sliding mechanism, the axial sliding mechanism comprises an outer fixed rod and an inner sliding rod both arranged in the axial direction, the upper end portion of the outer fixed rod is provided with a positioning tooth groove, the positioning tooth groove comprises a first positioning tooth groove and a second positioning tooth groove arranged adjacent to each other in the circumferential direction of the outer fixed rod; the inner sliding rod is located inside the outer fixed rod and the upper end portion of the inner sliding rod has a matching tooth axially opposite to and meshing with the positioning tooth groove, the inner sliding rod is configured to move axially under the lifting of the plug when the plug is inserted into the locking channel, so that the automatic hook device switches between a hooking state and an unhooking state;

[0007] When in the hooked state, the mating tooth engages with the first positioning tooth groove, and the inner sliding rod radially presses the locking piece so that the locking piece penetrates into the locking channel and locks the plug; when in the unhooked state, the mating tooth disengages from the first positioning tooth groove and engages with the second positioning tooth groove, and the inner sliding rod radially releases the locking piece so that the locking piece loosens the plug.

[0008] In one embodiment, the automatic hook device also includes an upper shell, the upper shell has a accommodating cavity, the axial sliding mechanism is located in the accommodating cavity, and the outer fixed rod is connected to the inner wall of the accommodating cavity; the axial sliding mechanism also includes a first reset member, one end of the first reset member is connected to the inner wall of the accommodating cavity opposite to the upper end of the inner sliding rod, and the other end of the first reset member is connected to the inner sliding rod, and the first reset member is configured to provide a reset force that presses the mating tooth against the positioning tooth groove.

[0009] In one embodiment, the radial locking mechanism also includes a push rod, a plurality of the push rods are axially arranged in the circumferential direction of the locking channel and connected to the inner sliding rod, an end of the push rod away from the inner sliding rod is provided with a slope structure opposite to the locking channel, and a plurality of the locking members are radially arranged in the circumferential direction of the locking channel and abut against the slope structures of the plurality of push rods one by one.

[0010] In one embodiment, the bottom of the first positioning tooth groove is lower than the bottom of the second positioning tooth groove along the axial direction, so that when the mating tooth is engaged with the first positioning tooth groove, the inner sliding rod drives the inclined surface structure of the push rod to press down to compress the locking member, and when the mating tooth is engaged with the second positioning tooth groove, the inner sliding rod drives the inclined surface structure of the push rod to rise to release the locking member.

[0011] In one embodiment, the inner sliding rod includes a first inner sliding rod and a second inner sliding rod, the upper end of the first inner sliding rod has a mating tooth axially opposite to and engaged with the positioning tooth groove; the second inner sliding rod is located between the first inner sliding rod and the outer fixed rod, the upper end of the second inner sliding rod has a third positioning tooth groove axially opposite to and engaged with the mating tooth, the lower end of the second inner sliding rod is provided with a bottom plate, the plug is inserted into the locking channel and abuts against the bottom plate.

[0012] In one embodiment, a plurality of sliding grooves are opened axially on the circumference of the second inner sliding rod, and the radial locking mechanism also includes a push plate, which is located inside the second inner sliding rod and connected to the lower end of the first inner sliding rod, and the push plate is connected to the plurality of push rods in the circumferential direction through the sliding grooves.

[0013] In one embodiment, the automatic hook device also includes a lower shell, which is connected to the upper shell to enclose the accommodating cavity, and a plurality of axial through holes are axially arranged on the circumference of the lower shell, and the locking channel is opened at the center of the lower shell, and a plurality of radial through holes connected with the axial through holes and the locking channels are radially arranged on the circumference of the lower shell; the locking piece is located in the radial through hole, and the push rod is passed through the axial through hole.

[0014] In one embodiment, the radial locking mechanism also includes a second reset member, one end of which abuts against the upper end of the push rod, and the other end of the second reset member abuts against the side of the lower shell body opposite to the accommodating cavity, and the second reset member is configured to provide a reset force that enables the push rod to move axially to release the locking member radially.

[0015] In one embodiment, the mating tooth has a helical gear structure, and the positioning tooth groove has a helical tooth groove structure mating with the helical gear structure, so that when the inner sliding rod moves axially, the mating tooth slides along the positioning tooth groove and generates an axial thrust.

[0016] The present application also proposes a single crystal furnace, which comprises:

[0017] An automatic hook device as described above;

[0018] The plug has two ends respectively comprising a hook portion and a connecting portion, the hook portion having a conical structure, and an end of the hook portion having a larger diameter is connected to the connecting portion;

[0019] The barrel, one end of the connecting portion away from the hook portion is connected to the barrel.

[0020] In the technical solution of the present application, the automatic hook device descends, the plug enters the locking channel axially and lifts the inner slide rod until the matching teeth are engaged with the first positioning tooth groove, and the inner slide rod drives the locking piece to enter the locking channel to lock the plug, and the automatic hook device is in the hooking state, and the automatic hook device rises and lifts the barrel connected to the plug. After the barrel is used up, the automatic hook device descends again, the plug abuts against and lifts the inner slide rod axially until the matching teeth are engaged with the second positioning tooth groove, and the inner slide rod drives the locking piece to withdraw from the locking channel to release the plug, and the automatic hook device is in the unhooking state, and waits until the next round of plugs enters the locking channel axially again and lifts the inner slide rod until the matching teeth are engaged with the first positioning tooth groove, and the automatic hook device is in the hooking state again. In this way, the automatic hook device and the plug can be automatically introduced and connected as well as automatically unhooked during the feeding process. When feeding, the automatic hook device descends and automatically aligns with the plug of the barrel for introduction and connection, and the barrel is lifted for feeding. When the empty barrel is unhooked, the automatic hook device descends and unloads, and automatically unhooks. Through rapid hooking and unhooking, the single crystal furnace can quickly enter the feeding state to improve the feeding efficiency and eliminate the cost of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of an automatic hook device of a single crystal furnace and an automatic hook device of an embodiment of the present application when the automatic hook device is in an unhooked state.

[0022] Figure 2 This is a structural schematic diagram of an automatic hook device of a single crystal furnace and an automatic hook device of an embodiment of the present application when the automatic hook device is in a hooking state.

[0023] Figure 3 This is a structural schematic diagram of the axial sliding mechanism of an embodiment of a single crystal furnace and an automatic hook device thereof of the present application.

[0024] Figure 4 This is a structural schematic diagram of an embodiment of a single crystal furnace and an automatic hook device thereof of the present application when the inner slide bar is lifted up.

[0025] Figure 5 This is a structural schematic diagram of the inner sliding rod of an embodiment of the single crystal furnace and its automatic hook device of the present application during the process of rotating around the axis.

[0026] Figure 6 This is a structural schematic diagram of an embodiment of a single crystal furnace and an automatic hook device thereof of the present application when the matching teeth of the inner slide rod are engaged with the first positioning tooth groove.

[0027] Figure 7 This is a structural schematic diagram of an embodiment of a single crystal furnace and an automatic hook device thereof of the present application when the matching teeth of the inner slide rod are engaged with the second positioning tooth groove.

[0028] Description of component numbers in the attached figure:

[0029] 1000, automatic hook device; 100, radial locking mechanism; 110, locking member; 120, locking channel; 130, push rod; 140, second reset member; 150, push ring; 160, sliding groove; 170, slider; 200, axial sliding mechanism; 210, outer fixed rod; 211, positioning tooth groove; 2111, first positioning tooth groove; 2112, second positioning tooth groove; 2113, helical tooth groove structure; 2114, keyway; 2 115. Connecting block; 220. Inner slide bar; 221. First inner slide bar; 2211. Matching teeth; 2212. Helical gear structure; 222. Second inner slide bar; 2221. Third positioning tooth groove; 2223. Bottom plate; 2224. Lug; 230. First reset member; 300. Upper shell; 310. Accommodating chamber; 400. Lower shell; 410. Axial through hole; 420. Radial through hole; 430. Guide tube; 500. Plug. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] See also Figures 1 to 3 , Figure 1 and Figure 2 The schematic diagrams of the structure of the automatic hook device 1000 in the unhooking state and the hooking state are shown respectively. Figure 3 The schematic diagram of the structure of the axial sliding mechanism 200 is shown. The present application proposes an automatic hook device 1000, which is used for automatic hooking and unhooking of a plug 500. The automatic hook device 1000 includes a radial locking mechanism 100 and an axial sliding mechanism 200. The radial locking mechanism 100 includes a locking member 110 and a locking channel 120 arranged along the axial direction. The locking channel 120 is used for inserting the plug 500. The locking member 110 is configured to be able to move in the radial direction and at least partially enter the locking channel 120 or exit from the locking channel 120.

[0037] See also Figures 4 to 7 , Figures 4 to 7The schematic diagrams of the structure are shown respectively when the inner slide bar 220 is lifted, when the inner slide bar 220 is rotating around the axis, when the matching teeth 2211 of the inner slide bar 220 are meshed with the first positioning tooth groove 2111, and when the matching teeth 2211 of the inner slide bar 220 are meshed with the second positioning tooth groove 2112. The axial sliding mechanism 200 includes an outer fixed rod 210 and an inner slide bar 220, both of which are arranged along the axial direction. The upper end of the outer fixed rod 210 is provided with a positioning tooth groove 211, and the positioning tooth groove 211 includes a first positioning tooth groove 2111 and a second positioning tooth groove 2112 which are adjacently arranged in the circumferential direction of the outer fixed rod 210. The inner slide bar 220 is located inside the outer fixed rod 210 and the upper end of the inner slide bar 220 has a matching tooth 2211 that is opposite to and meshed with the positioning tooth groove 211 in the axial direction. The inner slide bar 220 is configured to move axially under the lifting of the plug 500 when the plug 500 is inserted into the locking channel 120, so that the automatic hook device 1000 switches between the hook state and the unhooking state. In the hook state, the matching tooth 2211 is meshed with the first positioning tooth groove 2111, and the inner slide bar 220 presses the locking member 110 in the radial direction, so that the locking member 110 penetrates into the locking channel 120 and locks the plug 500. In the unhooking state, the matching tooth 2211 is disengaged from the first positioning tooth groove 2111 and meshed with the second positioning tooth groove 2112, and the inner slide bar 220 releases the locking member 110 in the radial direction, so that the locking member 110 releases the plug 500.

[0038] The process of the automatic hook device 1000 hooking and unhooking the plug 500 is as follows: the automatic hook device 1000 descends, the plug 500 enters the locking channel 120 axially and lifts the inner slide rod 220 until the mating tooth 2211 engages with the first positioning tooth groove 2111, and the inner slide rod 220 drives the locking piece 110 to enter the locking channel 120 to lock the plug 500, the automatic hook device 1000 is in a hooking state, and the automatic hook device 1000 rises and lifts the barrel connected to the plug 500. After the barrel is used up, the automatic hook device 1000 descends again, and the plug 500 axially abuts and lifts the inner slide rod 220 until the mating tooth 2211 engages with the second positioning tooth groove 2112, and the inner slide rod 220 drives the locking member 110 to withdraw from the locking channel 120 to release the plug 500, and the automatic hook device 1000 is in an unhooked state, waiting for the next round of plug 500 to axially enter the locking channel 120 again and lift the inner slide rod 220 until the mating tooth 2211 engages with the first positioning tooth groove 2111, and the automatic hook device 1000 is in a hooked state again. In this way, during the feeding process, the automatic hook device 1000 and the plug 500 can be automatically introduced and connected, and automatically unhooked. When feeding, the automatic hook device 1000 descends and automatically aligns with the plug 500 of the barrel for introduction and connection, and the barrel is lifted for feeding. When the empty barrel is unhooked, the automatic hook device 1000 descends to unload and automatically unhooks. Through rapid hooking and unhooking, the single crystal furnace can quickly enter the feeding state to improve the feeding efficiency and eliminate the cost of manual operation.

[0039] See also Figure 1 and Figure 2 The automatic hook device 1000 further includes an upper shell 300, which has a receiving chamber 310, in which the axial sliding mechanism 200 is located, and the outer fixed rod 210 is connected to the inner wall of the receiving chamber 310. Exemplarily, a connecting block 2115 is provided on the outer wall of the outer fixed rod 210 opposite to the receiving chamber 310, and a groove matching the connecting block is provided on the receiving chamber 310, so that the outer fixed rod 210 is fixedly connected to the inner wall of the receiving chamber 310 by fitting the connecting block 2115 in the groove.

[0040] The axial sliding mechanism 200 also includes a first reset member 230, one end of which is connected to the inner wall of the accommodating cavity 310 opposite to the upper end of the inner sliding rod 220, and the other end of the first reset member 230 is connected to the inner sliding rod 220. The first reset member 230 is configured to provide a reset force that presses the mating tooth 2211 against the positioning tooth groove 211.

[0041] The radial locking mechanism 100 further includes a push rod 130, a plurality of push rods 130 are axially arranged on the circumference of the locking channel 120 and connected to the inner slide bar 220, and an inclined surface structure opposite to the locking channel 120 is arranged at the end of the push rod 130 away from the inner slide bar 220, and a plurality of locking members 110 are radially arranged on the circumference of the locking channel 120 and abut against the inclined surface structures of the plurality of push rods 130 one by one. The bottom of the first positioning tooth groove 2111 along the axial direction is lower than the bottom of the second positioning tooth groove 2112, so that when the matching tooth 2211 is engaged with the first positioning tooth groove 2111, the inner slide bar 220 drives the inclined surface structure of the push rod 130 to press down to compress the locking member 110, and when the matching tooth 2211 is engaged with the second positioning tooth groove 2112, the inner slide bar 220 drives the inclined surface structure of the push rod 130 to rise to release the locking member 110. Exemplarily, the locking member 110 is a rolling member. When the inner slide rod 220 moves along the axial direction, it will synchronously drive the inclined surface structure of the push rod 130 to move, so that the locking member 110 abutted and pressed by the inclined surface structure switches between two states: entering the locking channel 120 and exiting the locking channel 120 .

[0042] See also Figures 1 to 3 The inner slide bar 220 includes a first inner slide bar 221 and a second inner slide bar 222. The upper end of the first inner slide bar 221 has a matching tooth 2211 that is axially opposite to and meshed with the positioning tooth groove 211. The second inner slide bar 222 is located between the first inner slide bar 221 and the outer fixed rod 210. The upper end of the second inner slide bar 222 has a third positioning tooth groove 2221 that is axially opposite to and meshed with the matching tooth 2211. The lower end of the second inner slide bar 222 is provided with a bottom plate 2223. The plug 500 is inserted into the locking channel 120 and abuts against the bottom plate 2223.

[0043] See also Figures 4 to 7, the mating teeth 2211 have a helical gear structure 2212, and the positioning tooth groove 211 has a helical tooth groove structure 2113 mating with the helical gear structure 2212, so that when the inner slide bar 220 moves axially, the mating teeth 2211 slide along the positioning tooth groove 211 and generate thrust around the axis. When the second inner slide bar 222 moves axially, the third positioning tooth groove 2221 engages with the mating teeth 2211 to lift the first inner slide bar 221. Under the lifting of the second inner slide bar 222, the mating teeth 2211 can slide circumferentially to successively engage with the first positioning tooth groove 2111 and the second positioning tooth groove 2112 disposed adjacently. When in the hooked state, the mating tooth 2211 engages with the first positioning tooth groove 2111, the inner sliding rod 220 drives the push rod 130 downward, and the inclined surface structure of the push rod 130 simultaneously abuts against the locking piece 110 downward and presses the locking piece 110 into the locking channel 120. When in the unhooked state, the mating tooth 2211 engages with the second positioning tooth groove 2112, the inner sliding rod 220 drives the push rod 130 upward, and the inclined surface structure of the push rod 130 simultaneously loosens the locking piece 110 upward, and the locking piece 110 exits the locking channel 120 under the thrust of the plug 500.

[0044] Furthermore, a plurality of sliding grooves 160 are provided in the axial direction on the circumference of the second inner slide bar 222, and the radial locking mechanism 100 further includes a push ring 150, which is located inside the second inner slide bar 222 and connected to the lower end of the first inner slide bar 221, and the push ring 150 is connected to the plurality of push rods 130 in the circumferential direction through the sliding grooves 160. Specifically, a plurality of sliders 170 are provided in the circumferential direction on the outer side of the push ring 150, and the sliders 170 pass through the sliding grooves 160 and are connected to the push rods 130, and when the second inner slide bar 222 moves in the axial direction, the first inner slide bar 221 is lifted and moved in the axial direction, and the axial movement of the first inner slide bar 221 drives the synchronous axial movement of the push ring 150, and the push ring 150 drives the axial movement of the push rods 130 through the sliders 170.

[0045] See also Figure 3 Specifically, the second inner slide rod 222 is provided with a lug 2224 on the outer wall opposite to the outer fixed rod 210, and the outer fixed rod 210 is provided with a key groove 2114 extending along the axial direction on the inner wall opposite to the second inner slide rod 222, and the lug 2224 is slidably connected to the key groove 2114, so as to ensure that the second inner slide rod 222 will not deflect during the axial movement.

[0046] See also Figure 1 and Figure 2The automatic hook device 1000 further includes a lower shell 400, which is connected to the upper shell 300 to enclose the accommodating cavity 310. The lower shell 400 is provided with a plurality of axial through holes 410 in the axial direction. The locking channel 120 is opened at the center of the lower shell 400. The lower shell 400 is provided with a plurality of radial through holes 420 in the radial direction that are connected with the axial through holes 410 and the locking channel 120. The locking member 110 is located in the radial through hole 420, and the push rod 130 is passed through the axial through hole 410.

[0047] The radial locking mechanism 100 further includes a second reset member 140, one end of which abuts against the upper end of the push rod 130, and the other end of which abuts against the side of the lower housing 400 opposite to the accommodating chamber 310. The second reset member 140 is configured to provide a reset force that causes the push rod 130 to move axially to radially release the locking member 110. The lower housing 400 is provided with a tapered guide tube 430 on the side facing away from the upper housing 300, and the end of the guide tube 430 with a smaller diameter is connected to the locking channel 120.

[0048] The present application also proposes a single crystal furnace, which includes the above-mentioned automatic hook device 1000, a plug 500 and a barrel. The two ends of the plug 500 are a hook part and a connecting part respectively. The hook part has a conical structure. The end of the hook part with a larger diameter is connected to the connecting part, and the end of the connecting part away from the hook part is connected to the barrel.

[0049] In the technical solution of the present application, the automatic hook device 1000 descends, the plug 500 enters the locking channel 120 axially and lifts the inner slide rod 220 until the mating tooth 2211 engages with the first positioning tooth groove 2111, and the inner slide rod 220 drives the locking piece 110 to enter the locking channel 120 to lock the plug 500, and the automatic hook device 1000 is in a hooking state, and the automatic hook device 1000 rises and lifts the barrel connected to the plug 500. After the barrel is used up, the automatic hook device 1000 descends again, and the plug 500 axially abuts and lifts the inner slide rod 220 until the mating tooth 2211 engages with the second positioning tooth groove 2112, and the inner slide rod 220 drives the locking piece 110 to withdraw from the locking channel 120 to release the plug 500, and the automatic hook device 1000 is in an unhooked state, waiting for the next round of plug 500 to axially enter the locking channel 120 again and lift the inner slide rod 220 until the mating tooth 2211 engages with the first positioning tooth groove 2111, and the automatic hook device 1000 is in a hooked state again. In this way, during the feeding process, the automatic hook device 1000 and the plug 500 can be automatically introduced and connected, and automatically unhooked. When feeding, the automatic hook device 1000 descends and automatically aligns with the plug 500 of the barrel for introduction and connection, and the barrel is lifted for feeding. When the empty barrel is unhooked, the automatic hook device 1000 descends to unload and automatically unhooks. Through rapid hooking and unhooking, the single crystal furnace can quickly enter the feeding state to improve the feeding efficiency and eliminate the cost of manual operation.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An automatic hook device for automatically hooking and unhooking a plug, characterized in that: The automatic hook device comprises: A radial locking mechanism, the radial locking mechanism comprising a locking member and a locking channel arranged along the axial direction, the locking channel is used for the plug to be inserted, the locking member is configured to be able to move in the radial direction and at least partially enter the locking channel or withdraw from the locking channel; An axial sliding mechanism, the axial sliding mechanism comprises an outer fixed rod and an inner sliding rod both arranged in the axial direction, the upper end portion of the outer fixed rod is provided with a positioning tooth groove, the positioning tooth groove comprises a first positioning tooth groove and a second positioning tooth groove arranged adjacent to each other in the circumferential direction of the outer fixed rod; the inner sliding rod is located inside the outer fixed rod and the upper end portion of the inner sliding rod has a matching tooth axially opposite to and meshing with the positioning tooth groove, the inner sliding rod is configured to move axially under the lifting of the plug when the plug is inserted into the locking channel, so that the automatic hook device switches between a hooking state and an unhooking state; When in the hooked state, the mating tooth engages with the first positioning tooth groove, and the inner sliding rod radially presses the locking piece so that the locking piece penetrates into the locking channel and locks the plug; when in the unhooked state, the mating tooth disengages from the first positioning tooth groove and engages with the second positioning tooth groove, and the inner sliding rod radially releases the locking piece so that the locking piece loosens the plug.

2. The automatic hook device according to claim 1, characterized in that: The automatic hook device also includes an upper shell, which has a accommodating cavity, the axial sliding mechanism is located in the accommodating cavity, and the outer fixed rod is connected to the inner wall of the accommodating cavity; the axial sliding mechanism also includes a first reset member, one end of the first reset member is connected to the inner wall of the accommodating cavity opposite to the upper end of the inner sliding rod, the other end of the first reset member is connected to the inner sliding rod, and the first reset member is configured to provide a reset force that presses the mating tooth against the positioning tooth groove.

3. The automatic hook device according to claim 2, characterized in that: The radial locking mechanism also includes a push rod, a plurality of which are axially arranged in the circumferential direction of the locking channel and connected to the inner sliding rod, an end of the push rod away from the inner sliding rod is provided with a slope structure opposite to the locking channel, and a plurality of locking members are radially arranged in the circumferential direction of the locking channel and abut against the slope structures of the plurality of push rods in a one-to-one manner.

4. The automatic hook device according to claim 3, characterized in that: The bottom of the first positioning tooth groove is lower than the bottom of the second positioning tooth groove along the axial direction, so that when the mating tooth is engaged with the first positioning tooth groove, the inner sliding rod drives the inclined surface structure of the push rod to press down to compress the locking piece, and when the mating tooth is engaged with the second positioning tooth groove, the inner sliding rod drives the inclined surface structure of the push rod to rise to release the locking piece.

5. The automatic hook device according to claim 3, characterized in that: The inner slide rod includes a first inner slide rod and a second inner slide rod, the upper end of the first inner slide rod has a matching tooth axially opposite to and engaged with the positioning tooth groove; the second inner slide rod is located between the first inner slide rod and the outer fixed rod, the upper end of the second inner slide rod has a third positioning tooth groove axially opposite to and engaged with the matching tooth, the lower end of the second inner slide rod is provided with a bottom plate, the plug is inserted into the locking channel and abuts against the bottom plate.

6. The automatic hook device according to claim 5, characterized in that: The second inner slide rod is provided with a plurality of sliding grooves axially along the circumference thereof. The radial locking mechanism further comprises a push plate, which is located inside the second inner slide rod and connected to the lower end portion of the first inner slide rod. The push plate is connected to the plurality of push rods in the circumferential direction through the sliding grooves.

7. The automatic hook device according to claim 3, characterized in that: The automatic hook device also includes a lower shell, which is connected to the upper shell to enclose the accommodating cavity, and a plurality of axial through holes are axially arranged on the circumference of the lower shell. The locking channel is opened at the center of the lower shell, and a plurality of radial through holes connected with the axial through holes and the locking channel are radially arranged on the circumference of the lower shell; the locking piece is located in the radial through hole, and the push rod is penetrated by the axial through hole.

8. The automatic hook device according to claim 7, characterized in that: The radial locking mechanism also includes a second reset member, one end of which abuts against the upper end of the push rod, and the other end of which abuts against the side of the lower shell body opposite to the accommodating cavity, and the second reset member is configured to provide a reset force that enables the push rod to move axially to release the locking member radially.

9. The automatic hook device according to claim 1, characterized in that: The mating teeth have a helical gear structure, and the positioning tooth groove has a helical tooth groove structure mating with the helical gear structure, so that when the inner slide rod moves axially, the mating teeth slide along the positioning tooth groove and generate thrust around the axis.

10. A single crystal furnace, characterized in that: The single crystal furnace comprises: The automatic hook device according to any one of claims 1 to 9; The plug has two ends respectively comprising a hook portion and a connecting portion, the hook portion having a conical structure, and an end of the hook portion having a larger diameter is connected to the connecting portion; The barrel, one end of the connecting portion away from the hook portion is connected to the barrel.

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