CN211947288U - Lower transmission equipment and single crystal furnace - Google Patents
Lower transmission equipment and single crystal furnace Download PDFInfo
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- CN211947288U CN211947288U CN202020300389.2U CN202020300389U CN211947288U CN 211947288 U CN211947288 U CN 211947288U CN 202020300389 U CN202020300389 U CN 202020300389U CN 211947288 U CN211947288 U CN 211947288U
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- lead screw
- lower transmission
- underdrive
- single crystal
- wedge
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Abstract
The utility model provides a lower transmission equipment and single crystal growing furnace, wherein, lower transmission equipment is used for driving the crucible in the single crystal growing furnace to go up and down, include: a support; the lead screw is arranged on the bracket and used for driving the crucible shaft to move up and down, and the lead angle of the lead screw is smaller than the equivalent friction angle; the lifting motor is connected with the lead screw and used for driving the lead screw to rotate. According to the utility model discloses a lower transmission equipment can promote the security of single crystal growing furnace, in time detects out hourglass silicon, and stable in structure.
Description
Technical Field
The utility model relates to a photovoltaic field, concretely relates to lower transmission equipment and single crystal growing furnace.
Background
The single crystal furnace is a single crystal growing device, the lower transmission is a main device of the single crystal furnace, and the lower transmission is arranged at the lower part of the furnace body and used for driving the quartz crucible to lift and rotate.
The lower transmission device usually adopts a ball screw, and the ball screw does not have a self-locking function, so that the safety is insufficient.
The condition in the furnace is mainly observed through two windows on the furnace cover, and silicon leakage caused by slight breakage of the quartz crucible is not easy to be noticed. If the damage to the thermal field, the furnace bottom and the lower transmission equipment cannot be found in time, the economic loss is huge, and safety accidents are possibly caused.
The down-drive is fixed by adopting the combined action of a locking screw and a screw playing the role of a jackscrew to realize the leveling and fixing of the down-drive. The installation surface of the bottom of the lower transmission is suspended, the position of the base is fixed only by the friction force of the screw, the base is easy to deviate in the use process of the lower transmission, the coaxiality deviation is large, the crystal pulling quality is influenced, and meanwhile the lower transmission needs to be frequently leveled and aligned again, so that the normal production is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a lower transmission equipment can promote the security of single crystal growing furnace, in time detects out hourglass silicon, and stable in structure.
In order to solve the technical problem, on the one hand, the utility model provides a lower transmission device for drive crucible goes up and down in the single crystal growing furnace, include:
a support;
the lead screw is arranged on the bracket and used for driving the crucible shaft to move up and down, and the lead angle of the lead screw is smaller than the equivalent friction angle;
the lifting motor is connected with the lead screw and used for driving the lead screw to rotate.
Further, the lead screw is a trapezoidal lead screw, and the thread pitch is 5 mm.
Further, the lifting motor is provided with an electromagnetic band-type brake mechanism.
Further, the lower transmission device further includes:
the corrugated pipe is arranged on the support and is used for being sleeved on the crucible shaft;
the silicon leakage detection switch is arranged on the corrugated pipe and is a normally closed switch and is opened when the detected temperature is higher than the preset temperature.
Further, the lower transmission device further includes:
and the alarm device is connected with the silicon leakage detection switch and gives an alarm when the silicon leakage detection switch is turned on.
Further, the bellows comprises:
the flange is used for connecting the bottom of the single crystal furnace;
the straight pipe is arranged below the flange, and the silicon leakage detection switch is arranged on the straight pipe;
the wave plate is arranged below the straight pipe.
Further, the lower transmission device further includes:
and 4 groups of wedge block assemblies, wherein the wedge block assemblies are respectively arranged at four corners of the bottom of the bracket and are used for adjusting the height between the bracket and the mounting base.
Furthermore, each group of wedge block sizing block assemblies comprise two wedge blocks with wedge surfaces matched with each other and adjusting bolts connected with the wedge blocks in the front-rear direction, and the height of each wedge block sizing block assembly is adjusted through the adjusting bolts.
Further, still include:
and the fixing bolt penetrates through the corner of the bottom of the support in the up-down direction and is used for fixing the support on the mounting base.
Furthermore, two adjacent outer side faces of each corner of the support are connected with the mounting base through tightening bolts arranged in the horizontal direction respectively.
On the other hand, the utility model provides a single crystal growing furnace, include:
a lower transmission device, the lower transmission device being any one of the lower transmission devices described above;
the lower transmission equipment is arranged on the mounting base;
and the crucible shaft is driven by a lead screw of the lower transmission device to move up and down.
The above technical scheme of the utility model one of following beneficial effect has at least:
according to the lower transmission device of the utility model, the lead screw lead angle is smaller than the equivalent friction angle, so that the self-locking function can be realized, and the safety of the single crystal furnace is improved;
furthermore, the lifting motor is provided with an electromagnetic band-type brake mechanism, the lifting motor can realize the band-type brake function, and the safety of the single crystal furnace is further improved;
furthermore, the lower transmission equipment comprises a silicon leakage detection switch, so that silicon leakage can be detected in time, loss of the single crystal furnace is reduced, and safety is improved;
further, four corners of the bottom of the support are provided with 4 groups of wedge block sizing block assemblies, so that the stability of the lower transmission equipment can be improved, and the lower transmission equipment is prevented from deviating.
Drawings
Fig. 1 is a front view of a lower transmission according to an embodiment of the present invention;
fig. 2 is a side view of the lower transmission of fig. 1.
Reference numerals:
100. a support; 200. a lead screw; 300. a bellows; 310. a flange; 320. a straight pipe; 330. a wave plate; 400. a silicon leakage detection switch; 500. the wedge block sizing block comprises a motor, 600 and a wedge block sizing block assembly; 700. fixing the bolt; 800. Jacking the bolt; 900. and a stop block.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Next, a lower transmission according to an embodiment of the present invention will be described first.
Figures 1 and 2 show an alternative embodiment of a lower transmission according to the invention. As shown in fig. 1 and 2, the lower transmission device according to the present invention for driving the crucible to ascend and descend in the single crystal furnace comprises: support 100, lead screw 200 and elevator motor 500.
Wherein, the lead screw 200 is installed on the support 100 and used for driving the crucible shaft to move up and down, and the lead screw 200 has a lead angle smaller than the equivalent friction angle.
The lead screw 200 has a lead angle smaller than the equivalent friction angle, so that the lead screw 200 has a self-locking function. When the equipment is stopped due to faults, the relative position of the crucible shaft and the lead screw 200 can be locked by the self-locking function of the lead screw 200, the damage and safety accidents of the single crystal furnace caused by the sliding of the crucible shaft and the lead screw 200 are avoided, and therefore the safety of the single crystal furnace is improved.
Further, the screw 200 is a trapezoidal screw, and the pitch is 5 mm.
For example, a trapezoidal lead screw with the diameter of 50mm and the thread pitch of 5mm is adopted, so that the self-locking crucible shaft can have a good self-locking function, and the smooth lifting motion of the crucible shaft is driven.
The lifting motor 500 is connected to the lead screw 200 and is used for driving the lead screw 200 to rotate.
That is, the elevating motor 500 drives the screw rod 200 to rotate, and the screw rod 200 drives the crucible shaft to move up and down. Therefore, the position of the crucible shaft can be accurately adjusted.
According to some embodiments of the utility model, elevator motor 500 is equipped with electromagnetic band-type brake mechanism. When the lifting motor 500 is powered off due to faults, the electromagnetic band-type brake mechanism operates, the motor 500 stops rotating, the position of the lead screw 200 can be locked, and the situation that the lead screw 200 rotates due to the gravity of a crucible shaft, the single crystal furnace is damaged due to the descending of the crucible shaft, and safety accidents occur can be avoided.
Under the condition of equipment fault shutdown, the self-locking function of the lead screw 200 is combined with the contracting brake mechanism of the motor 500, so that the safety of the equipment is higher.
It should be noted that the above is only an optional example, and the electromagnetic band-type brake mechanism may be replaced by an electric brake mechanism (e.g. a dynamic brake mechanism, a reverse connection brake mechanism, etc.), that is, any band-type brake mechanism of the electric machine should be understood to be within the scope of the present invention.
According to some embodiments of the present invention, the under drive device comprises a bellows 300 and a silicon leak detection switch 400.
Wherein, the corrugated pipe 300 is arranged on the bracket 100, and the corrugated pipe 300 is used for being sleeved on the crucible shaft.
The bellows 300 can seal the crucible shaft and the bottom of the single crystal furnace, so that external gas is prevented from entering the single crystal furnace, and the single crystal furnace is more stable.
The silicon leakage detecting switch 400 is provided on the bellows 300, and the silicon leakage detecting switch 400 is a normally closed switch and is opened when a temperature higher than a predetermined temperature is detected.
The bellows 300 is connected with the bottom of the single crystal furnace, and when silicon leakage occurs, the silicon leakage detection switch 400 can detect the silicon leakage situation in time.
The silicon leakage detection switch 400 can be an overtemperature switch, when silicon leakage occurs in the single crystal furnace, silicon flows to the corrugated pipe 300, the temperature control detection switch is turned on when detecting that the temperature exceeds a preset temperature (for example, 150 ℃), a circuit is cut off, and the situations that the single crystal furnace continues to operate, a thermal field, a furnace bottom and lower transmission equipment are damaged, and safety accidents are caused can be avoided.
Further, the underground transmission equipment further includes an alarm device (not shown) which is connected to the silicon leakage detection switch 400 and gives an alarm when the silicon leakage detection switch 400 is turned on.
That is, when the silicon leakage detection switch 400 detects silicon leakage, the alarm device detects that the silicon leakage detection switch 400 is in an open state and issues an alarm while the switch is turned on. Therefore, the system can remind an operator to process in time, make up the action in time and reduce the loss to the minimum.
Further, the bellows 300 includes a flange 310, a straight tube 320, and a wave plate 330.
Wherein the flange 310 is used for connecting the bottom of the single crystal furnace.
The straight pipe 320 is disposed below the flange 310, and the silicon leakage detecting switch 400 is disposed on the straight pipe 320.
The waveplate 330, the waveplate 330 is disposed under the straight tube 320.
The silicon leakage detection switch 400 is arranged on the straight pipe 320, and the straight pipe 320 is closer to the furnace bottom and does not directly contact the furnace bottom of the single crystal furnace, so that the temperature disturbance of the furnace bottom is small, and the detection is more accurate and timely.
According to the utility model discloses some embodiments, lower transmission equipment still includes 4 groups voussoir parallels subassembly 600, and voussoir parallels subassembly 600 sets up four corners in the bottom of support 100 respectively, and voussoir parallels subassembly 600 is used for adjusting the height between support 100 and the installation base.
Wherein the wedge shoe assembly 600 may be an adjustable shoe or the like.
That is to say, set up 1 group of voussoir parallels subassembly 600 respectively through 4 turnings in the bottom of support 100 and adjust the height between support 100 and the installation base for the level (l) ing of underdrive equipment is accurate, and voussoir parallels subassembly 600 is the face contact with the bottom surface of support 100 and installation base simultaneously, and the skew is difficult to take place for underdrive equipment, makes underdrive equipment stable.
Further, each set of wedge shim assemblies 600 comprises two wedge blocks with wedge surfaces matched with each other and adjusting bolts connecting the wedge blocks in the front-rear direction, and the height of the wedge shim assemblies 600 is adjusted through the adjusting bolts.
That is, the height of the wedge shim assembly 600 is adjusted by adjusting the relative position of the two wedge blocks with the wedge surfaces matched with each other through the adjusting bolt, so that the lower transmission device is leveled. The adjusting bolt can be provided with a nut, and after the height of the wedge block sizing block assembly 600 is adjusted, the adjusting bolt is locked through the nut, so that the two wedge blocks are fixed in position, and the height of the wedge block sizing block assembly 600 is adjusted more stably.
Further, the lower transmission device further comprises a fixing bolt 700, and the fixing bolt 700 is arranged at a corner of the bottom of the bracket 100 in an up-down direction in a penetrating manner and used for fixing the bracket 100 on the mounting base.
That is, the bracket is fixed to the mounting base by fixing bolts 700 provided at corners of the bottom of the bracket 100. Thereby, the stability of the up-down position of the lower transmission device is realized.
Further, two adjacent outer side surfaces of each corner of the bracket 100 are respectively connected to the mounting base by tightening bolts 800 arranged in the horizontal direction.
For example, the mounting base is provided with stoppers 900 on the outer sides of two adjacent outer side surfaces of each corner of the bracket 100, and the horizontally disposed tightening bolt 800 passes through the stoppers 900 to abut against the bracket 100. Therefore, the lower transmission device can be prevented from shifting in front, back, left and right positions, and the position of the lower transmission device is more stable.
Furthermore, the embodiment of the utility model provides a still provide a single crystal growing furnace, include:
the lower transmission equipment is any one of the lower transmission equipment;
the mounting base is provided with lower transmission equipment;
the crucible shaft is driven by a lead screw 200 of the lower transmission device to move up and down.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A lower transmission device for driving a crucible to ascend and descend in a single crystal furnace, comprising:
a support;
the lead screw is arranged on the bracket and used for driving the crucible shaft to move up and down, and the lead angle of the lead screw is smaller than the equivalent friction angle;
the lifting motor is connected with the lead screw and used for driving the lead screw to rotate.
2. Underdrive apparatus according to claim 1, wherein the lead screw is a trapezoidal lead screw and the pitch is 5 mm.
3. A underdrive apparatus as claimed in claim 1, wherein the lift motor is provided with an electromagnetic band-type brake mechanism.
4. The underdrive apparatus as recited in claim 1, further comprising:
the corrugated pipe is arranged on the support and is used for being sleeved on the crucible shaft;
the silicon leakage detection switch is arranged on the corrugated pipe and is a normally closed switch and is opened when the detected temperature is higher than the preset temperature.
5. The underdrive apparatus as recited in claim 4, further comprising:
and the alarm device is connected with the silicon leakage detection switch and gives an alarm when the silicon leakage detection switch is turned on.
6. The underdrive apparatus as recited in claim 4, wherein the bellows comprises:
the flange is used for connecting the bottom of the single crystal furnace;
the straight pipe is arranged below the flange, and the silicon leakage detection switch is arranged on the straight pipe;
the wave plate is arranged below the straight pipe.
7. The underdrive apparatus as recited in claim 1, further comprising:
and 4 groups of wedge block assemblies, wherein the wedge block assemblies are respectively arranged at four corners of the bottom of the bracket and are used for adjusting the height between the bracket and the mounting base.
8. The underdrive apparatus as claimed in claim 7, wherein each set of wedge shoe assemblies includes two wedge blocks with mating wedge faces and an adjustment bolt connecting the wedge blocks in a fore-and-aft direction, the height of the wedge shoe assemblies being adjustable by the adjustment bolt.
9. The underdrive apparatus as recited in claim 7, further comprising:
and the fixing bolt penetrates through the corner of the bottom of the support in the up-down direction and is used for fixing the support on the mounting base.
10. The underdrive apparatus as claimed in claim 7, wherein two adjacent outer sides of each corner of the bracket are connected to the mounting base by a horizontally disposed tightening bolt.
11. A single crystal furnace, comprising:
a lower transmission apparatus as claimed in any one of claims 1 to 10;
the lower transmission equipment is arranged on the mounting base;
and the crucible shaft is driven by a lead screw of the lower transmission device to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020300389.2U CN211947288U (en) | 2020-03-12 | 2020-03-12 | Lower transmission equipment and single crystal furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020300389.2U CN211947288U (en) | 2020-03-12 | 2020-03-12 | Lower transmission equipment and single crystal furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211947288U true CN211947288U (en) | 2020-11-17 |
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ID=73193810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020300389.2U Active CN211947288U (en) | 2020-03-12 | 2020-03-12 | Lower transmission equipment and single crystal furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211947288U (en) |
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2020
- 2020-03-12 CN CN202020300389.2U patent/CN211947288U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230420 Address after: 214181 Standard Factory Building 2, Runzhou Road, Huishan Industrial Transformation Cluster Zone, Wuxi, Jiangsu Province Patentee after: Jing'ao (Wuxi) Photovoltaic Technology Co.,Ltd. Address before: 055550 Jing Long Street, Ningjin County, Xingtai, Hebei Patentee before: HEBEI JING-LONG SUN EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |