CN217149406U - Automatic connecting device suitable for hard shaft single crystal furnace built-in charging - Google Patents

Abstract

The utility model discloses an automatic connecting device suitable for the built-in feeding of a hard shaft single crystal furnace, which comprises a hook component, a U-shaped joint component and a rotary connecting mechanism which are arranged from bottom to top in sequence; the upper end of the rotary connecting mechanism is connected with the hard shaft seed shaft, the lower end of the rotary connecting mechanism is connected with the U-shaped joint assembly, and the rotary connecting mechanism is used for offsetting the rotary motion of the hard shaft seed shaft; the U-shaped joint assembly comprises a connecting plate and a U-shaped ring, and the U-shaped ring can be detachably connected below the connecting plate; the center of U-shaped ring is hung and is established the couple subassembly, and the couple subassembly includes couple, base, prevents changeing flange and sleeve, and the couple vertical fixation is in the upper surface middle part of base, and the below of base can be dismantled to connect and prevent changeing the flange, prevents establishing clearance fit's sleeve in changeing the flange, and the sleeve is connected with the back shaft of built-in charging means. The utility model discloses an automatic connecting device can realize the automatic carry of built-in charging means and break away from, and degree of automation is high, reduces the aerial work and brings danger for personnel.

Description

Automatic connecting device suitable for hard shaft single crystal furnace built-in charging

Technical Field

The utility model relates to a hard axis single crystal growing furnace embeds reinforced technical field specifically is a be applicable to hard axis single crystal growing furnace embeds reinforced automatic connection device.

Background

The lifting mechanism of the hard shaft single crystal furnace is fixed with the frame, the auxiliary furnace chamber is not allowed to move when the hard shaft seed crystal shaft descends into the auxiliary furnace chamber, and in addition, the hard shaft seed crystal shaft must be accompanied with rotary motion in the ascending and descending processes to avoid the scratch on the outer surface of the shaft and influence the vacuum sealing.

At present, the connection of the hard shaft seed crystal shaft and the built-in feeder is realized manually by an operator, because the height of the auxiliary furnace chamber of the single crystal furnace from the ground exceeds 1 meter, and meanwhile, the built-in feeder is a cylinder with the length of more than 1.5 meters and the weight of more than 150Kg after charging, the connection of the built-in feeder and the hard shaft seed crystal shaft is at the position with the height of more than 2.5 meters from the ground, and the operator needs to go up high tools such as a ladder, and certain difficulty and danger exist.

SUMMERY OF THE UTILITY MODEL

The technical insufficiency that exists to the above-mentioned, the utility model aims at providing a be applicable to hard axle single crystal furnace built-in reinforced automatic connection device to solve the problem that proposes in the background art.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides an automatic connecting device suitable for the built-in feeding of a hard shaft single crystal furnace, which comprises a hook component, a U-shaped joint component and a rotary connecting mechanism which are arranged from bottom to top in sequence;

the upper end of the rotary connecting mechanism is connected with the hard shaft seed shaft, the lower end of the rotary connecting mechanism is connected with the U-shaped joint assembly, and the rotary connecting mechanism is used for offsetting the rotary motion of the hard shaft seed shaft;

the U-shaped joint assembly comprises a connecting plate and a U-shaped ring, and the U-shaped ring is detachably connected below the connecting plate;

the hook assembly is hung at the center of the U-shaped ring and comprises a hook, a base, an anti-rotation flange and a sleeve, the hook is vertically fixed in the middle of the upper surface of the base, the anti-rotation flange is detachably connected below the base, the sleeve is arranged in the anti-rotation flange in a clearance fit mode, and the sleeve is connected with a supporting shaft of a built-in feeder.

Optionally, the connecting plate is in a circular plate shape, two hanging lugs are symmetrically arranged at the left end and the right end of the connecting plate and are integrally formed with the connecting plate, the U-shaped ring is in a U shape, threads are arranged at the upper parts of the two free ends of the U-shaped ring, and the two free ends of the U-shaped ring upwards penetrate through the two hanging lugs and are screwed and fixed through nuts.

Optionally, the lower surface of the connecting plate is symmetrically provided with rotatable baffles, the two baffles are respectively connected with the connecting plate through hinges, and the two baffles are positioned at the front side and the rear side of the hook.

Optionally, the hook comprises a vertical rod, the lower portion of the vertical rod is bent rightwards by 90 degrees to form a connecting portion, the upper portion of the vertical rod is bent rightwards to form a first inclined portion inclining upwards, the upper portion of the first inclined portion is bent downwards to form a second inclined portion inclining downwards, and the lower portion of the second inclined portion is bent downwards vertically to form an anti-falling portion.

Optionally, the hook is fixed on the base through a connecting portion, the two sides of the connecting portion are symmetrically connected with reinforcing blocks, and the bottoms of the reinforcing blocks are fixed on the base.

Optionally, the center of the anti-rotation flange is provided with a center hole, the anti-rotation flange is integrally connected with the circular round table at the lower part of the center hole, the inner side wall of the anti-rotation flange is uniformly provided with a plurality of fastening screw holes along the circumference, the fastening screw holes are located at the junction of the round table and the inner side wall of the anti-rotation flange, and the fastening screw holes penetrate through the anti-rotation flange from bottom to top.

Optionally, the outer wall of the sleeve is in clearance fit with the inner wall of the circular truncated cone, the top of the sleeve extends outwards to form a circular ring-shaped baffle ring, the outer diameter of the baffle ring is D3, the diameter of the central hole is D1, the inner diameter of the circular truncated cone is D2, and D1, D2 and D3 satisfy: d2 < D3 < D1, the sleeve passes the centre bore of preventing changeing the flange to through keeping off the ring overlap joint on the round platform, the upper surface that keeps off the ring flushes with the upper surface that prevents changeing the flange, holding screw passes holding screw hole and keeps off the ring top tightly, makes sleeve and base top tightly, the back shaft of cup jointing built-in charging means in the sleeve to pass the sleeve through the fitting pin level and support shaft spiro union is fixed.

Optionally, the rotary connection mechanism comprises a seed shaft connection block, a thrust bearing and a bearing fixing shaft which are coaxially arranged from top to bottom, the center of the seed shaft connection block is in threaded connection with the bottom of the hard shaft seed shaft, the lower portion of the seed shaft connection block is in threaded connection with the flange face of the bearing seat, the thrust bearing is installed in the bearing seat, the bearing fixing shaft is located in the bearing seat, and the bearing fixing shaft sequentially penetrates through the thrust bearing and the bearing seat from top to bottom and is detachably connected with the connection plate.

Optionally, the thrust bearing includes an upper flange, a ball and a lower flange, the upper flange of the thrust bearing is in transition fit with the bearing fixing shaft, the lower flange of the thrust bearing is in transition fit with the inner circle of the bearing seat, a gap exists between the lower flange of the thrust bearing and the side wall of the bearing fixing shaft, and a gap exists between the bearing seat and the connecting plate.

Optionally, the connecting portion is welded on the base, the reinforcing blocks are symmetrically welded on two sides of the connecting portion, and the bottoms of the reinforcing blocks are welded on the base.

The beneficial effects of the utility model reside in that:

(1) the utility model discloses a hard axle single crystal furnace embeds reinforced automatic connecting device, package couple subassembly, U-shaped joint subassembly and swivelling joint mechanism, swivelling joint mechanism can offset the rotary motion of hard axle seed crystal axle, does not damage built-in charging means, does not also influence the life of hard axle seed crystal axle, makes things convenient for hard axle single crystal furnace to put reinforced in-process hard axle seed crystal axle and is connected with built-in charging means.

(2) The hook assembly is matched with the U-shaped joint assembly for use, automatic mounting and separation of the built-in feeder can be achieved, the automation degree is high, danger brought to personnel by high-altitude operation is reduced, and meanwhile pollution caused by artificial contact of the built-in feeder is reduced.

(3) The utility model discloses a hard axle single crystal growing furnace embeds reinforced automatic connection device U type subassembly and couple cooperation use can realize the automatic centering of built-in charging means under the action of gravity.

(4) The baffle plate symmetrically arranged on the automatic connecting device for feeding in the hard shaft single crystal furnace can effectively prevent the U-shaped component and the hook from being naturally separated in the using process.

(5) Prevent establishing clearance fit's sleeve in the commentaries on classics flange, the sleeve is connected with the back shaft of built-in charging means, and a plurality of tight setting screw holes are evenly seted up along the circumference to the inside wall of preventing changeing the flange, and tight setting screw hole is located the round platform and prevents the juncture of changeing the flange inside wall, conveniently adjusts the couple direction under the prerequisite of not rotating built-in charging means, and after the couple direction was adjusted, set screw passed tight setting screw hole and withheld sleeve and base top tightly, can prevent that sleeve and back shaft from rotating.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of an automatic connecting device suitable for feeding materials in a hard shaft single crystal furnace according to an embodiment of the present invention;

FIG. 2 is a side view of an automatic connecting device suitable for feeding materials in a hard shaft single crystal furnace according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an automatic connecting device suitable for feeding in a hard shaft single crystal furnace according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the present invention after the hook assembly and the U-shaped joint assembly are connected;

fig. 5 is a top view of the hook assembly of the present invention;

FIG. 6 is a cross-sectional view of the hook of the present invention;

FIG. 7 is an enlarged view taken at A in FIG. 3;

FIG. 8 is a schematic structural view of a rotation-preventing flange of the present invention;

FIG. 9 is a cross-sectional view of a center anti-rotation flange of the present invention;

fig. 10 is a top view of the anti-rotation flange of the present invention;

fig. 11 is a side view of the thrust bearing of the present invention.

Description of reference numerals:

the hook assembly 10, the U-shaped joint assembly 20, the rotary connecting mechanism 30, the hard shaft seed shaft 40 and the supporting shaft 50;

the anti-falling device comprises a hook 1, a base 2, an anti-rotating flange 3, a sleeve 4, a bolt 5, a locking pin 6, a vertical rod 11, a connecting part 12, a first inclined part 13, a second inclined part 14, an anti-falling part 15 and a reinforcing block 16;

the connecting plate 21, the U-shaped ring 22, the baffle 23 and the hanging lug 211;

the seed shaft connecting block 31, the bearing fixing shaft 32, the thrust bearing 33, the bearing seat 34 and the first bolt 35;

a central hole 301, a fastening screw hole 302, a threaded hole 303, a circular truncated cone 304 and a fastening screw 305;

an upper flange 331, a ball 332, a lower flange 333;

a retainer ring 41.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

as shown in fig. 1-11, the utility model provides an automatic connecting device suitable for hard axis single crystal furnace built-in feeding, which comprises a hook component 10, a U-shaped joint component 20 and a rotary connecting mechanism 30 which are arranged from bottom to top in sequence.

Referring to fig. 1, 2 and 10, specifically, the rotary connection mechanism 30 includes a seed shaft connection block 31, a thrust bearing 33 and a bearing fixing shaft 32 which are coaxially arranged up and down, the center of the seed shaft connection block 31 is in threaded connection with a hard shaft seed shaft 40, the lower part of the seed shaft connection block 31 is in threaded connection with a flange surface of a bearing seat 34 through a plurality of first bolts 35, the thrust bearing 33 is installed in the bearing seat 34, the bearing fixing shaft 32 is located in the bearing seat 34, the bearing fixing shaft 32 sequentially penetrates through the thrust bearing 33 and the bearing seat 34 from top to bottom and abuts against the connection plate 21, and the bearing fixing shaft 32 is fixed on the connection plate 21 of the U-shaped joint assembly 20 through a second bolt 41 in a threaded manner.

In some embodiments of the present invention, referring to fig. 1, fig. 3 and fig. 11, the thrust bearing 33 includes an upper flange 331, a ball 332 and a lower flange 333, the upper flange 331 of the thrust bearing 33 is in transition fit with the bearing fixing shaft 32, the lower flange 333 of the thrust bearing 33 is in transition fit with the inner circle of the bearing seat 34, there is a gap between the lower flange 333 of the thrust bearing 33 and the side wall of the bearing fixing shaft 32, and when the bearing fixing shaft 32 is screwed on the connecting plate 21 through the second bolt 41, there is a gap between the bearing seat 34 and the connecting plate 21.

It can be understood that the seed shaft connection block 11, the bearing housing 34 and the lower flange 333 are formed as a single body, and the connection plate 21, the bearing fixing shaft 32 and the upper flange 331 are formed as a single body, and free rotation movement is achieved between the two bodies by the balls 332. The rotary connecting mechanism 30 can offset the rotary motion of the hard shaft seed crystal shaft 40, does not damage the built-in feeder, does not influence the service life of the hard shaft seed crystal shaft 40, and is convenient for the hard shaft seed crystal shaft to be connected with the built-in feeder in the built-in feeding process of the hard shaft single crystal furnace.

In some embodiments of the present invention, referring to fig. 1 and 4, the U-shaped joint assembly 20 includes a connecting plate 21, a U-shaped ring 22 and a baffle 23, the connecting plate 21 is in a circular plate shape, two hanging lugs 211 and two hanging lugs 211 are symmetrically arranged at the left and right ends of the connecting plate 21. The U-shaped ring 22 is detachably connected below the connecting plate 21.

In some embodiments of the present invention, referring to fig. 1, the U-shaped ring 22 is U-shaped, the upper parts of the two free ends of the U-shaped ring 22 are provided with threads, and the two free ends of the U-shaped ring 22 upwards pass through the two hanging lugs 211 and are fastened and fixed by nuts. The surface of the U-shaped ring 22 is smooth, and the surface of the U-shaped ring 22 is provided with a polytetrafluoroethylene coating to prevent pollution caused by friction.

In some embodiments of the present invention, referring to fig. 1 and 4, the lower surface of the connecting plate 21 is symmetrically provided with a rotatable baffle 23, two baffle 23 is connected to the connecting plate 21 through a hinge 24, two baffle 23 is located at the front and back sides of the hook 1, and the baffle 23 is located at the same side of the U-shaped ring 22, two baffle 23 plays a limiting role in the hook 1.

Referring to fig. 1 and 2, the hook assembly 10 is hung at the center of the U-shaped ring 22, and, in particular, the hook assembly 10 comprises a hook 1, a base 2, an anti-rotation flange 3 and a sleeve 4, the hook 1 is vertically fixed in the middle of the upper surface of the base 2, as shown in reference to figures 4-6, the hook 1 is formed by bending a straight rod, the hook 1 comprises a vertical rod 11, the lower part of the vertical rod 11 is bent to the right by 90 degrees to form a connecting part 12, the upper part of the vertical rod 11 is bent rightwards to form a first inclined part 13 inclining upwards, the upper part of the first inclined part 13 is bent downwards to form a second inclined part 14 inclining downwards, the lower part of the second inclined part 14 is vertically bent downwards to form a retaining part 15, furthermore, the length of the first inclined part 13 is less than that of the second inclined part 14, in the normal mounting state, U-shaped ring 22 is mounted at the joint of inclined portion one 13 and inclined portion two 14. The retaining portion 15 prevents the hook 1 from coming off the U-shaped ring 22. And the connecting part between the vertical rod 11 and the first inclined part 13, the connecting part between the first inclined part 13 and the second inclined part 14, and the connecting part between the second inclined part 14 and the anti-falling part 15 all adopt round corners.

In some embodiments of the present invention, the hook 1 is fixed on the base 2 through the connecting portion 12, and the connecting manner may be welding, snap connection, threaded connection, or other connecting manners that can be realized. In this embodiment, a welding connection method is adopted. The hook 1 is connected with the base 2 through the connecting part 12, so that the contact area with the base 2 is increased, and the connecting strength is increased; further, reinforcing blocks 16 are symmetrically welded to the front side and the rear side of the connecting portion 12, the bottoms of the reinforcing blocks 16 are welded to the base 2, and the reinforcing blocks 16 are used for increasing the connecting strength of the hook 1 and the base 2.

Referring to fig. 1, 7, 8 and 9, the lower portion of the base 2 is in threaded connection with an anti-rotation flange 3 through bolts 5, the anti-rotation flange 3 is uniformly provided with threaded holes 303 along the circumference for connection with the base 2, the center of the anti-rotation flange 3 is provided with a center hole 301, the anti-rotation flange 3 is integrally connected with a circular truncated cone 304 at the lower portion of the center hole 301, the inner side wall of the anti-rotation flange 3 is uniformly provided with 2 to 6 fastening screw holes 302 along the circumference, in the present embodiment, the number of the fastening screw holes 302 is 4, the fastening screw holes 302 are located at the junction of the circular truncated cone 304 and the inner side wall of the anti-rotation flange 3, that is, half of the fastening screw holes 302 are located in the side wall of the anti-rotation flange 3, the other half of the fastening screw holes 302 are located in the circular truncated cone 304, the fastening screw holes 302 penetrate the anti-rotation flange 3 from bottom to top, at the junction of the circular truncated cone 304 and the anti-rotation flange 3, the fastening screw hole 302 is a circular hole, and in the upper area of the circular truncated cone 304, a semicircular hole of the fastening screw hole 302 is formed. In other words, the lower half portion of the fastening screw hole 302 is a circular hole, and the upper half portion thereof is a semicircular hole, so that when the fastening screw 305 extends out of the circular truncated cone 304 from the fastening screw hole 302, the fastening screw 305 can contact with the stopper ring 41 of the sleeve 4, and the fastening screw 305 is screwed upwards, so that the sleeve 4 is pressed against the base 2, and the sleeve 4 and the support shaft 50 can be prevented from rotating.

Referring to fig. 1 and 7, a sleeve 4 with a clearance fit is arranged in the anti-rotation flange 3, an outer wall of the sleeve 4 is in clearance fit with an inner wall of the circular truncated cone 304, a top of the sleeve 4 extends outwards to form an annular baffle ring 41, an outer diameter of the baffle ring 41 is D3, a diameter of the central hole 301 is D1, an inner diameter of the circular truncated cone 304 is D2, and D1, D2 and D3 satisfy the following requirements: d2 < D3 < D1. The sleeve 4 penetrates through a center hole 301 of the anti-rotation flange 3 and is lapped on the circular truncated cone 304 through the retaining ring 41, the upper surface of the retaining ring 41 is flush with the upper surface of the anti-rotation flange 3, and the set screw 305 penetrates through the set screw hole 302 and is tightly pressed against the retaining ring 41, so that the sleeve 4 is tightly pressed against the base 2, and the hook 1 is not rotated. The supporting shaft 50 of the built-in feeder is sleeved in the sleeve 4, and horizontally penetrates through the sleeve 4 through the locking pin 6 to be screwed and fixed with the supporting shaft 50.

The aim at that so sets up, couple 1 needs the direction towards the vice furnace house side door of single crystal growing furnace, so make things convenient for the carry on U type ring 22, but built-in charging means adds very heavy behind the silicon material, adjusts the difficulty to couple 1 direction through rotating built-in charging means, so the inventor designs earlier to couple 1 direction adjustment before the built-in charging means is put into the vice furnace house of single crystal growing furnace, concrete operation method: the hook assembly 10 is sleeved with the supporting shaft 50 of the built-in feeder through the sleeve 4 and locked through the locking pin 6, the hook 1 is rotated to enable the opening of the hook 1 to face the direction of the auxiliary furnace chamber of the single crystal furnace, and then the hook assembly is screwed upwards from the fastening screw hole 302 through the fastening screw 305 to enable the sleeve 4 to be tightly propped against the base 2, so that the hook assembly 10 is installed on the built-in feeder.

The working principle is as follows:

at first open the side door of the auxiliary furnace chamber of the single crystal furnace, will the utility model discloses a hard axle single crystal furnace embeds reinforced automatic piecing devices passes through seed shaft connecting block 31 and the 40 bottom threaded connection of hard axle seed shaft to a side direction auxiliary furnace chamber door opening direction that makes U type ring 22 not have baffle 22 through the rotation of hard axle seed shaft 40. The inner bore of the sleeve 4 is then threaded onto the internal feeder support shaft 50 and pinned between the two through holes using the locking pin 6.

Then the hook component 10 is rotated to enable the opening of the hook 1 to be in the direction of the auxiliary furnace chamber of the single crystal furnace, the hook component 10 is installed on the built-in feeder, then the built-in feeder is brought to the opening of the auxiliary furnace chamber through the rotating and lifting mechanism of the single crystal furnace and moves upwards or downwards until the opening of the hook 1 and the U-shaped ring 22 are flush with each other visually, the rotating and lifting mechanism drives the built-in feeder to move horizontally into the auxiliary furnace chamber, and at the moment, the opening of the hook 1 can penetrate into the U-shaped ring 22. The hard shaft seed shaft 40 rotates and moves upwards to drive the U-shaped joint component 20 to move upwards simultaneously, the hook 1 can be prevented by the baffle 23 from rotating to be separated from the U-shaped ring, finally the hook 1 can be in contact with the U-shaped ring 22, the hook 1 can slide along the U-shaped ring 22 under the action of gravity and finally stops at the lowest position of the U-shaped ring 22, the hard shaft seed shaft 40 and the built-in feeder are concentric, and the hard shaft seed shaft 40 and the built-in feeder are connected. Hard axle seed crystal axle 40 continues to rotate upward movement and can pass through the utility model discloses a hard axle single crystal furnace embeds reinforced automatic piecing devices and drives built-in charging means upward movement and break away from rotatory and hoist mechanism, and rotatory and hoist mechanism withdraw from vice furnace chamber.

When the charging is completed, the side door of the sub-furnace chamber of the single crystal furnace is opened, and the side of the U-shaped ring 22 without the baffle 22 is opened toward the opening direction of the sub-furnace chamber by the rotation of the hard shaft seed shaft 40. The rotating and lifting mechanism enters the auxiliary furnace chamber, contacts the bottom of the built-in feeder and supports the built-in feeder to rise, the hook 1 is separated from the U-shaped ring 22 until the anti-falling part 15 of the hook 1 leaves the U-shaped ring 22 by a distance of 20-60mm in the embodiment, and the rotating and lifting mechanism stops rising. At this time, the rotating and lifting mechanism drives the built-in feeder to move horizontally towards the outside of the auxiliary furnace chamber, and meanwhile, the hook 1 can leave the U-shaped ring 22, namely, the hard shaft seed crystal shaft 40 is separated from the built-in feeder.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An automatic connecting device suitable for built-in charging of a hard shaft single crystal furnace is characterized by comprising a hook assembly (10), a U-shaped joint assembly (20) and a rotary connecting mechanism (30) which are sequentially arranged from bottom to top;

the upper end of the rotary connecting mechanism (30) is connected with the hard shaft seed shaft (40), and the lower end of the rotary connecting mechanism (30) is connected with the connecting plate (21) of the U-shaped joint component (20);

the U-shaped joint assembly (20) comprises a connecting plate (21) and a U-shaped ring (22), wherein the U-shaped ring (22) is detachably connected below the connecting plate (21);

the utility model discloses a couple subassembly (10) is established to the center of U shape ring (22) is hung, couple subassembly (10) is including couple (1), base (2), prevent changeing flange (3) and sleeve (4), couple (1) vertical fixation is in the upper surface middle part of base (2), couple (1) and U shape ring (22) match and fit, the below of base (2) can be dismantled and connect and prevent changeing flange (3), establish clearance fit's sleeve (4) in preventing changeing flange (3), sleeve (4) are connected with back shaft (50) of built-in charging means.

2. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that the connecting plate (21) is in a circular plate shape, hanging lugs (211) are symmetrically arranged at the left end and the right end of the connecting plate (21), the two hanging lugs (211) are integrally formed with the connecting plate (21), the U-shaped ring (22) is in a U shape, threads are arranged at the upper parts of the two free ends of the U-shaped ring (22), and the two free ends of the U-shaped ring (22) upwards penetrate through the two hanging lugs (211) and are tightly fixed through nuts.

3. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that rotatable baffle plates (23) are symmetrically arranged on the lower surface of the connecting plate (21), two baffle plates (23) are respectively connected with the connecting plate (21) through hinges (24), and the two baffle plates (23) are positioned on two sides of the hook (1).

4. The automatic connecting device for charging a hard shaft single crystal furnace according to claim 1, wherein the hook (1) comprises a vertical rod (11), the lower part of the vertical rod (11) is bent to the right by 90 degrees to form a connecting part (12), the upper part of the vertical rod (11) is bent to the right to form a first inclined part (13) which inclines upwards, the upper part of the first inclined part (13) is bent downwards to form a second inclined part (14) which inclines downwards, and the lower part of the second inclined part (14) is bent downwards vertically to form a retaining part (15).

5. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that the hook (1) is fixed on the base (2) through a connecting part (12), reinforcing blocks (16) are symmetrically connected to two sides of the connecting part (12), and the bottom of each reinforcing block (16) is fixed on the base (2).

6. The automatic connecting device suitable for charging in the hard shaft single crystal furnace is characterized in that a center hole (301) is formed in the center of the anti-rotating flange (3), the anti-rotating flange (3) is integrally connected with a circular truncated cone (304) at the lower portion of the center hole (301), a plurality of fastening screw holes (302) are uniformly formed in the inner side wall of the anti-rotating flange (3) along the circumference, the fastening screw holes (302) are located at the junction of the circular truncated cone (304) and the inner side wall of the anti-rotating flange (3), and the fastening screw holes (302) penetrate through the anti-rotating flange (3) from bottom to top.

7. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that the outer wall of the sleeve (4) is in clearance fit with the inner wall of the circular truncated cone (304), the top of the sleeve (4) extends outwards to form an annular baffle ring (41), the outer diameter of the baffle ring (41) is D3, the diameter of the central hole (301) is D1, the inner diameter of the circular truncated cone (304) is D2, and D1, D2 and D3 meet the following requirements: d2 < D3 < D1, the centre bore (301) of preventing changeing flange (3) is passed to sleeve (4), and through keeping off ring (41) overlap joint on round platform (304), the upper surface that keeps off ring (41) flushes with the upper surface that prevents changeing flange (3), holding screw (305) pass set screw hole (302) and keep off ring (41) top tight for sleeve (4) and base (2) top tight, the back shaft (50) of built-in charging means are cup jointed in sleeve (4), and pass sleeve (4) and back shaft (50) screw fastening through fitting pin (6) level and fix.

8. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that the rotary connecting mechanism (30) comprises a seed shaft connecting block (31), a thrust bearing (33) and a bearing fixing shaft (32) which are coaxially arranged up and down, the center of the seed shaft connecting block (31) is in threaded connection with the bottom of the hard shaft seed shaft (40), the lower portion of the seed shaft connecting block (31) is in threaded connection with a flange face of a bearing seat (34), the thrust bearing (33) is installed in the bearing seat (34), the bearing fixing shaft (32) is located in the bearing seat (34), and the bearing fixing shaft (32) sequentially penetrates through the thrust bearing (33) and the bearing seat (34) from top to bottom and is detachably connected with the connecting plate (21).

9. The automatic connecting device suitable for the built-in charging of the hard shaft single crystal furnace is characterized in that the thrust bearing (33) comprises an upper flange (331), a ball (332) and a lower flange (333), the upper flange (331) of the thrust bearing (33) is in transition fit with the bearing fixing shaft (32), the lower flange (333) of the thrust bearing (33) is in transition fit with the inner circle of the bearing seat (34), the lower flange (333) of the thrust bearing (33) has a gap with the side wall of the bearing fixing shaft (32), and a gap exists between the bearing seat (34) and the connecting plate (21).

10. The automatic connecting device for hard axis single crystal furnace built-in charging of claim 5 is characterized in that the connecting part (12) is welded on the base plate (2), the reinforcing blocks (16) are symmetrically welded on two sides of the connecting part (12), and the bottom of the reinforcing block (16) is welded on the base plate (2).

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