A guiding mechanism for a crystal lifting component and a crystal lifting component

Abstract

The present invention relates to a guiding mechanism for a crystal lifting component, which includes a mounting component, a guiding wheel body, and an adjusting component. The guiding wheel body includes a guiding wheel shaft and a single guiding wheel. The adjusting component includes two adjusting parts, both of which are detachably sleeved on the guiding wheel shaft and are respectively located at both ends of the single guiding wheel and abutted against it. The two adjusting parts move along the axial direction of the guiding wheel shaft so that the midline perpendicular to the axis of the single guiding wheel coincides with the midline where the tooth opening of the wire winding wheel is located. The guiding wheel body and the adjusting component are fixedly installed on the crystal lifting component through the mounting component, and the rigid mounting component increases the guiding strength of the guiding mechanism. Moreover, the adjusting part drives the single guiding wheel to move in the axial direction relative to the guiding wheel shaft to adjust the movement of the midline of the single guiding wheel relative to the tooth opening of the wire winding wheel until the midline of the single guiding wheel coincides with the midline where the tooth opening of the wire winding wheel is located to complete the adjustment, which is used for guiding the crystal rope to make the guiding effect better.

Description

Technical Field

[0001] The present invention relates to the technical field of single crystal furnace equipment, and particularly relates to a guiding mechanism for a crystal lifting assembly and a crystal lifting assembly. Background Art

[0002] A single crystal furnace is a device that, in an inert gas (mainly nitrogen and helium) environment, melts polycrystalline materials such as polysilicon through a graphite heater to form a molten silicon liquid surface. The upper end of a seed crystal is connected to a lifting mechanism, and the lower end of the seed crystal contacts the molten silicon liquid surface. By rotating and lifting the seed crystal through the lifting mechanism, the molten silicon liquid surface is slowly pulled up by the seed crystal (the rotation direction of the seed crystal is opposite to that of the crucible). The silicon liquid will leave the melt as the seed crystal is pulled up by the lifting mechanism in a straight-pulling process. The silicon liquid on the melt will rise due to surface tension, and the interface on the seed crystal dissipates heat and solidifies downward towards the melt. As the seed crystal is pulled out of the melt, a single crystal with the same crystal orientation as the seed crystal grows. Therefore, a single crystal furnace is a device for growing dislocation-free single crystals by the Czochralski method.

[0003] A single crystal furnace includes a furnace bottom plate, a main furnace chamber, a furnace cover, an isolation valve chamber, a sub-furnace chamber, a lifting mechanism, and a crucible driving device. Among them, the lifting mechanism, as a core component in the single crystal furnace, is installed at the top of the sub-furnace chamber of the single crystal furnace, and it includes a crystal lifting assembly.

[0004] Specifically, the crystal lifting assembly is driven by a servo motor and decelerated by a worm and worm gear, and the overall rotational movement of a wire winding wheel is driven by a spline shaft. A spiral groove is axially formed on the outer wall of the wire winding wheel, and one end of a crystal rope is fixed to the wire winding wheel, and the other end is wound around the spiral groove and routed through an external fixed pulley, and finally connected to the seed crystal. The winding and unwinding of the crystal rope wound around the wire winding wheel are realized by the rotation of the wire winding wheel to control the lifting of the seed crystal connected to the crystal rope through the fixed pulley assembly.

[0005] Currently, in the prior art, during the rotation of the wire winding wheel along its axis, a guiding mechanism needs to be set to ensure that the crystal rope always remains vertical while winding around the wire winding wheel during the rising or falling process, so as to ensure the stability of crystal pulling.

[0006] For example, in a Chinese patent with the publication number CN110904499A, a wire-winding wheel drive and guiding mechanism for a single crystal furnace is provided. Specifically, a wire-winding wheel drive and guiding mechanism is provided that can guide the crystal rope during the rotation of the wire-winding wheel. Specifically, this invention patent application includes a guiding wheel that is directly fixed to one end inside the box body by screws and is parallel to the axis where the wire-winding wheel is located, and both are horizontally arranged. The guiding wheel is sleeved outside the screw and can rotate along the axis of the screw. The guiding wheel has a two-gear body structure. The two gear bodies are arranged in parallel, and the outer side walls of the two gear bodies just extend into the spiral groove of the wire-winding wheel to abut against the crystal rope, thereby playing a guiding role during the winding and unwinding of the crystal rope. That is, however, the existing two-gear body structure can only adjust the angle between the wire-winding wheel and the guiding wheel through an eccentric wheel to make them mesh and guide, and it cannot compensate for processing errors. Moreover, due to the influence of the protrusions between adjacent spiral grooves caused by the setting of the two gear bodies, once the two gear bodies are stuck at the protrusions, there may be a phenomenon that the lateral (axial of the wire-winding wheel) gap between the two sides of the gear body and the wire-winding wheel is too large and cannot be adjusted, thus affecting normal crystal pulling. Summary of the Invention

[0007] (1) Technical Problems to be Solved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a crystal lifting mechanism and a crystal lifting assembly for a single crystal furnace, which solve the technical problems that the existing two-gear body structure can only adjust the angle between the wire-winding wheel and the guiding wheel through an eccentric wheel to make them mesh and guide, and it cannot compensate for processing errors. Moreover, due to the influence of the protrusions between adjacent spiral grooves caused by the setting of the two gear bodies, once the two gear bodies are stuck at the protrusions, there may be a phenomenon that the lateral gap between the two sides of the gear body and the wire-winding wheel is too large and cannot be adjusted, thus affecting normal crystal pulling.

[0009] (2) Technical Solutions

[0010] To achieve the above object, the main technical solutions adopted by the present invention include:

[0011] On the one hand, a guiding mechanism for a crystal lifting assembly includes a mounting assembly, a guiding wheel main body, and an adjusting assembly;

[0012] The mounting assembly is used to fixedly install the guiding wheel main body on the crystal lifting assembly;

[0013] The guiding wheel main body includes a guide wheel shaft arranged on the mounting assembly and a guiding single wheel sleeved and coaxially arranged outside the guide wheel shaft;

[0014] The adjusting assembly includes two adjusting parts, and both of the two adjusting parts are detachably sleeved on the guide wheel shaft and are respectively located at both ends of the guiding single wheel and abut against it;

[0015] The two adjusting parts move along the axial direction of the guide wheel shaft so that the midline perpendicular to the axis of the guiding single wheel coincides with the intermediate line where the tooth opening of the wire winding wheel is located;

[0016] The mounting assembly can drive the guide wheel body to move radially so that the two end faces of the guiding single wheel are respectively in contact with the two side walls of the tooth opening.

[0017] Optionally, each of the adjusting parts includes a bearing bracket, a bearing, a locking nut and a movable end cover;

[0018] The bearing is sleeved on one end of the outer wall of the guide wheel shaft through the bearing bracket, and the movable end cover presses against the bearing and is fixed to the outer wall of the guide wheel shaft through the locking nut.

[0019] Optionally, the two adjusting parts are respectively a fixed end and a movable end arranged relative to the two ends of the guide wheel shaft;

[0020] The fixed end is detachably mounted on the guide wheel shaft, and the movable end is movably mounted on the guide wheel shaft.

[0021] Optionally, an elastic adjusting part is further arranged between the guiding single wheel and the bearing of the movable end;

[0022] The elastic adjusting part can form a pre-tightening force to abut against the end of the guiding single wheel;

[0023] The locking nut of the movable end is screwed to adjust the magnitude of the pre-tightening force so as to adjust the axial position of the guiding single wheel on the guide wheel shaft.

[0024] Optionally, the guiding single wheel includes a wheel body and a connecting sleeve, the wheel body is sleeved on the outer wall of the connecting sleeve and integrally formed with the wheel body;

[0025] The connecting sleeve is sleeved outside the guide wheel shaft, and the wheel body divides the connecting sleeve into a first connecting part and a second connecting part.

[0026] Optionally, the elastic adjusting part includes an elastic part, a first abutting part and a second abutting part arranged at both ends of the elastic part;

[0027] The first abutting part is sleeved outside the second connecting part of the connecting sleeve.

[0028] Optionally, the elastic part is a disc spring.

[0029] Optionally, a set screw hole is arranged on the mounting assembly, and the set screw hole can adjust the radial displacement of the guide wheel body relative to the wire winding wheel through the mounting assembly.

[0030] Optionally, a plurality of long strip holes are further formed in the mounting assembly, and the long strip holes are arranged along the slotting direction of the wire winding wheel.

[0031] On the other hand, a crystal lifting assembly includes the guiding mechanism for the crystal lifting assembly, a box body, a wire winding wheel, and a driving mechanism as described above.

[0032] (III) Beneficial effects

[0033] The beneficial effects of the present invention are as follows: For the guiding mechanism of the crystal lifting assembly of the present invention, the guiding wheel main body and the adjusting assembly are fixedly installed on the crystal lifting assembly through the mounting assembly, and the mounting assembly with increased rigidity improves the guiding strength of the guiding mechanism. Moreover, the adjusting part of the adjusting assembly drives the guiding single wheel to move axially relative to the guide wheel shaft, so as to adjust the center line of the guiding single wheel to move relative to the tooth opening of the wire winding wheel until the center line of the guiding single wheel coincides with the center line where the tooth opening of the wire winding wheel is located, and the two adjusting parts are fixed to complete the adjustment for guiding the crystal rope. Description of the drawings

[0034] Figure 1 is a schematic cross-sectional structure diagram of the crystal lifting assembly for a single crystal furnace of the present invention;

[0035] Figure 2 is a partial three-dimensional structure diagram of the crystal lifting assembly for a single crystal furnace of the present invention;

[0036] Figure 3 is Figure 2 a schematic structural diagram of the guiding mechanism of the crystal lifting assembly of the present invention;

[0037] Figure 4 Figure 3 a partial top view structural diagram of the guiding mechanism.

[0038]

Description of the reference numerals

[0039] 1: Mounting assembly; 11: Set screw hole; 12: Long strip hole; 13: Frame main body; 14: First fixing block; 15: Second fixing block; 16: Transverse long strip hole; 17: Top plate; 18: Connecting pressure plate; 2: Guiding wheel main body; 21: Guide wheel shaft; 22: Guiding single wheel; 221: Wheel body; 222: Connecting sleeve; 3: Adjusting assembly; 31: Adjusting part; 311: Bearing bracket; 312: Bearing; 313: Locking nut; 314: Movable end cover; 32: Elastic adjusting piece; 321: Elastic part; 322: First abutting part; 323: Second abutting part; 4: Wire pressing mechanism; 100: Box body; 200: Wire winding wheel; 201: Tooth opening; 300: Driving mechanism; 400: Connecting chassis; 500: Lifting cavity; 600: Spline shaft; C: Center line. Detailed implementation manners

[0040] For better explaining the present invention for easy understanding, the present invention will be described in detail below in conjunction with the accompanying drawings through specific embodiments. Among them, the orientation nouns such as "upper", "lower", "left", "right", "front" and "rear" mentioned in this article are based on Figure 1 the orientation of Figure 1 One side where the drive mechanism 300 is located in

[0041] is defined as "left", one side where the guiding mechanism is located relative to the box body 100 is defined as "upper", and one side perpendicular to the paper surface and facing outwards is defined as "front". Figure 1 and Figure 2 As shown, a crystal lifting mechanism for a single crystal furnace proposed in an embodiment of the present invention includes a crystal rotation assembly, a crystal lifting assembly, a fixed pulley assembly, a distribution box assembly, a conductive slip ring assembly and a self-counterweight assembly. The top of the crystal rotation assembly is connected to the crystal lifting assembly, and the fixed pulley assembly, the distribution box assembly, the conductive slip ring assembly and the self-counterweight assembly are all arranged on the crystal lifting assembly. The crystal rotation assembly can rotate to drive the crystal lifting assembly, the fixed pulley assembly, the distribution box assembly, the conductive slip ring assembly and the self-counterweight assembly to rotate as a whole.

[0042] A crystal lifting assembly of the present invention includes a connecting chassis 400, a box body 100, a wire winding structure, a drive mechanism 300 and a guiding mechanism for the crystal lifting assembly.

[0043] Among them, the box body 100 is arranged on the connecting chassis 400, and a lifting cavity 500 is formed between the box body 100 and the connecting chassis 400. The wire winding structure is arranged in the lifting cavity 500.

[0044] Furthermore, the bottom of the connecting chassis 400 is fixedly connected to the crystal rotation assembly, and the installation structural members of the fixed pulley assembly are all fixedly installed on the top of the box body 100. A communication port communicating with the fixed pulley body is opened on the top of the box body 100.

[0045] Specifically, as shown in Figure 3 , the wire winding structure includes a wire winding wheel 200 arranged inside the box body 100. The output end of the drive mechanism 300 is horizontally arranged, and the output end of the drive mechanism 300 is connected to the wire winding wheel 200 through a spline shaft 600 to drive the wire winding wheel 200 to rotate along its own axis. A plurality of tooth openings 201 are circumferentially formed on the outer wall of the wire winding wheel 200. The tooth openings 201 are used for winding the crystal rope and can wind multiple turns of the crystal rope, and can wind and unwind the crystal rope by rotation.

[0046] In this embodiment, the guiding mechanism for the crystal lifting assembly includes an installation assembly 1, a guiding wheel main body 2 and an adjusting assembly 3.

[0047] Furthermore, the installation assembly 1 is used to fixedly install the guiding wheel main body 2 below the communication port at the top of the inner cavity of the box body 100 of the crystal lifting assembly.

[0048] Specifically, refer to Figure 4 As shown, the mounting assembly 1 includes a frame body 13, a first fixing block 14 and a second fixing block 15 which are detachably connected to the frame body 13 and are respectively arranged at the front and rear ends of the frame body 13.

[0049] Further, a top plate 17 is arranged in the middle of the first fixing block 14 at the front end of the mounting assembly 1, and a set screw hole 11 is arranged on the top plate 17. A set screw is arranged in the set screw hole 11. By adjusting the set screw, the whole mounting assembly 1 can be driven to move up and down in the radial direction of its wire winding wheel 200, so as to adjust the up and down displacement of the guide wheel body 2 relative to the wire winding wheel 200 in the radial direction.

[0050] It should be noted that transverse long strip holes 16 which are matched with the adjusting assembly 3 are arranged at both the left and right ends of the first fixing block 14. In addition, connection pressing plates 18 are integrally formed on both the left and right sides of the frame body 13, and connection holes are arranged on the connection pressing plates 18.

[0051] Further, three long strip holes 12 are equidistantly arranged on the second fixing block 15 of the mounting assembly 1. The long strip holes 12 are arranged front and back along the slotting direction of the wire winding wheel 200 and are used for adjusting the position in the front and back direction of the wire winding wheel 200.

[0052] In this embodiment, refer to Figure 3 As shown, the guide wheel body 2 includes a guide wheel shaft 21 arranged on the frame body 13 of the mounting assembly 1 and a guide single wheel 22 sleeved and coaxially arranged outside the guide wheel shaft 21.

[0053] It should be noted that the axis of the guide shaft 21 is parallel to the axial direction of the wire winding wheel 200 and both are horizontally arranged.

[0054] Further, the guide single wheel 22 includes a wheel body 221 and a connection sleeve 222. The wheel body 221 is sleeved on the outer wall of the connection sleeve 222 and is integrally formed with the wheel body 221. The purpose is to improve the installation stability of the wheel body 221 and at the same time cooperate with the work of subsequent elastic components. The integral formation is convenient for the forming of the process and reduces the cost. The purpose of setting the guide single wheel 22 is to facilitate the adjustment in the left and right directions to cooperate with the guide mechanism to be in full contact with the crystal rope, so as to form a good guiding effect.

[0055] Specifically, the connection sleeve 222 is sleeved outside the guide wheel shaft 21, and the wheel body 221 divides the connection sleeve 222 into a first connection part and a second connection part. The purpose is to better connect with the adjusting parts 31 at both ends. Moreover, the purpose of setting the second connection part is to facilitate the connection with the adjusting assembly 3.

[0056] Further, the adjusting assembly 3 includes two adjusting parts 31 arranged left and right. Both of the two adjusting parts 31 are detachably sleeved on the guide wheel shaft 21 and are respectively located at both ends of the guiding single wheel 22 and abut against it.

[0057] The two adjusting parts 31 move along the axial direction of the guide wheel shaft 21 so that the midline of the guiding single wheel 22 perpendicular to its axis coincides with the middle line where the tooth opening of the wire winding wheel 200 is located.

[0058] It should be noted that before the crystal lifting assembly is started, the positions of the two adjusting parts 31 are manually adjusted. Then, after adjusting the guiding single wheel 22 between the two adjusting parts 31 to a suitable position, the guiding single wheel 22 is fixed through the adjusting parts 31 at both ends. The suitable position means that the guiding single wheel 22 is perpendicular to its axis, and the midline C of the guiding single wheel 22 arranged vertically coincides with the middle line where the tooth opening of the wire winding wheel 200 is located, so as to ensure that the distances between both ends of the guiding single wheel 22 and the inner side walls of the tooth opening in the transverse direction are the same. If there are the same gaps at both ends in the transverse direction after adjustment, then the installation assembly 1 is controlled to move downward as a whole through the set screws, thereby driving the guide shaft 21 and the guiding single wheel 22 to move downward synchronously, so that the guiding single wheel 22 can better abut against the crystal rope.

[0059] Further, each adjusting part 31 includes a bearing bracket 311, a bearing 312, a locking nut 313 and a movable end cover 314.

[0060] The bearing 312 is sleeved on one end of the outer wall of the guide wheel shaft 21 through the bearing bracket 311, and the movable end cover 314 presses against the bearing 312 and is fixed to the outer wall of the guide wheel shaft 21 through the locking nut 313. Specifically, by loosening the locking nut 313, the positions of the movable end cover 314 and the bearing 312 are adjusted, and then the axial position of the guiding single wheel 22 relative to the guide wheel shaft 21 is changed. After determination, it is locked and fixed through the locking nut 313.

[0061] Further, there is a guide wheel spacer sleeve between the locking nut 313 and the movable end cover 314. The purpose of setting the guide wheel spacer sleeve is to prevent the guiding single wheel 22 from moving in the transverse direction, so as to improve the stability of the guiding single wheel 22.

[0062] In this embodiment, the installation assembly 1 can drive the guide wheel main body 2 to move radially so that the two end faces of the guiding single wheel 22 are respectively in contact with the two side walls of the tooth opening.

[0063] In this case, the two adjusting parts 31 are respectively a fixed end and a movable end arranged relative to both ends of the guide wheel shaft 21. That is, the fixed end is fixed and locked by a lock nut 313 and does not move, and the movable end can adjust the left - right position of the guiding single wheel 22 relative to the guide shaft 21. Further, the adjustment of one side has better stability, high reliability, is convenient for adjustment, and improves the adjustment efficiency.

[0064] Further, the fixed end is detachably installed on the guide wheel shaft 21, and the movable end is movably installed on the guide wheel shaft 21.

[0065] Further, an elastic adjusting part 32 is also arranged between the guiding single wheel 22 and the bearing 312 of the movable end. The elastic adjusting part 32 can form a pre - tightening force to abut against the end of the guiding single wheel 22. The lock nut 313 of the movable end is screwed to adjust the magnitude of the pre - tightening force to adjust the axial position of the guiding single wheel 22 on the guide wheel shaft 21.

[0066] Specifically, when it is necessary for the guiding single wheel 22 to move to the left, the lock nut 313 is manually tightened. The lock nut 313 moves to the left, driving the bearing 312 to move to the left. As a result, the first abutting part 323 presses the elastic part 321 to the left. The elastic part 321 can push the guiding single wheel 22 to move to the left by relying on the pre - tightening force of its own spring, completing the left - right adjustment of the guiding single wheel 22.

[0067] Further, the elastic adjusting part 32 includes an elastic part 321, a first abutting part 322 and a second abutting part 323 arranged at both ends of the elastic part 321.

[0068] The first abutting part 322 is sleeved outside the second connecting part of the connecting sleeve 222. The first abutting part 322 has an annular step for abutting against one end of the elastic part 321. The second abutting part 323 is an annular pressing block integrally formed along the radial direction of the guide shaft 21 for abutting against the other end of the elastic part 321.

[0069] Further, the elastic part 321 is a disc spring. The elasticity of the disc spring is convenient for adjustment and the elasticity is sensitive, so that the left - right adjustment effect is better.

[0070] A guiding mechanism for a crystal lifting assembly fixes the guiding wheel body 2 and the adjusting assembly 3 on the crystal lifting assembly through the mounting assembly 1. The mounting assembly with increased rigidity improves the guiding strength of the guiding mechanism. Moreover, the adjusting part 31 of the adjusting assembly 3 drives the guiding single wheel 22 to move axially relative to the guide wheel shaft 21 to adjust the center line C of the guiding single wheel 22 relative to the tooth opening of the wire winding wheel 200 until the center line of the guiding single wheel 22 coincides with the center line where the tooth opening of the wire winding wheel 200 is located, and the two adjusting parts 31 are fixed on the guide shaft 21 to complete the adjustment for guiding the crystal rope.

[0071] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0072] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present invention, unless otherwise clearly defined and limited, when the first feature is "on" or "under" the second feature, it may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0074] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A guiding mechanism for a crystal lifting component, characterized in that, it includes a mounting component (1), a guiding wheel main body (2) and an adjusting component (3); The mounting component (1) is used to fixedly mount the guiding wheel main body (2) on the crystal lifting component; The guiding wheel main body (2) includes a guide wheel shaft (21) arranged on the mounting component (1) and a guiding single wheel (22) sleeved and coaxially arranged outside the guide wheel shaft (21); The adjusting component (3) includes two adjusting parts (31), and the two adjusting parts (31) are detachably sleeved on the guide wheel shaft (21) and are respectively located at both ends of the guiding single wheel (22) and abutted against it; The two adjusting parts (31) move along the axis direction of the guide wheel shaft (21) so that the midline perpendicular to the axis of the guiding single wheel (22) coincides with the intermediate line where the tooth opening of the wire winding wheel (200) is located; The mounting component (1) can drive the guiding wheel main body (2) to move radially so that both end faces of the guiding single wheel (22) are respectively in contact with both side walls of the tooth opening; Each adjusting part (31) includes a bearing bracket (311), a bearing (312), a locking nut (313) and a movable end cover (314); The bearing (312) is sleeved on one end of the outer wall of the guide wheel shaft (21) through the bearing bracket (311), and the movable end cover (314) presses against the bearing (312) and is fixed on the outer wall of the guide wheel shaft (21) through the locking nut (313); The two adjusting parts (31) are respectively a fixed end and a movable end arranged relative to both ends of the guide wheel shaft (21); The fixed end is detachably installed on the guide wheel shaft (21), the movable end is movably installed on the guide wheel shaft (21), and an elastic adjusting member (32) is further arranged between the guiding single wheel (22) and the bearing (312) of the movable end; The elastic adjusting member (32) can form a pre-tightening force to abut against the end of the guiding single wheel (22); The locking nut (313) of the movable end is screwed to adjust the magnitude of the pre-tightening force to adjust the axial position of the guiding single wheel (22) on the guide wheel shaft (21).

2. The guiding mechanism for a crystal lifting component according to claim 1, characterized in that, The guiding single wheel (22) includes a wheel body (221) and a connecting sleeve (222), and the wheel body (221) is sleeved on the outer wall of the connecting sleeve (222) and is integrally formed with the wheel body (221); The connecting sleeve (222) is sleeved outside the guide wheel shaft (21), and the wheel body (221) divides the connecting sleeve (222) into a first connecting part and a second connecting part.

3. The guiding mechanism for a crystal lifting component according to claim 2, characterized in that, The elastic adjusting member (32) includes an elastic part (321), a first abutting part (322) and a second abutting part (323) arranged at both ends of the elastic part (321); The first abutting portion (322) is sleeved outside the second connecting portion of the connecting sleeve (222).

4. The guiding mechanism for a crystal lifting assembly according to claim 3, characterized in that the elastic portion (321) is a disc spring.

5. The guiding mechanism for a crystal lifting assembly according to claim 1, characterized in that a set screw hole (11) is provided on the mounting assembly (1), and the set screw hole (11) can adjust the radial displacement of the guiding wheel body (2) relative to the wire winding wheel (200) through the mounting assembly (1).

6. The guiding mechanism for a crystal lifting assembly according to claim 5, characterized in that a plurality of long slots (12) are further formed on the mounting assembly (1), and the long slots (12) are arranged along the slotting direction of the wire winding wheel (200).

7. A crystal lifting assembly, characterized in that it includes the guiding mechanism for a crystal lifting assembly according to any one of claims 1-6, a box body (100), a wire winding wheel (200) and a driving mechanism (300).

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