Quartz tube hoisting mechanism

Abstract

The invention relates to the technical field of silicon carbide furnace crystal growth. A quartz tube hoisting mechanism comprises a tube hoop, the tube hoop comprises two semicircular hoop bodies, and the two ends of the two semicircular hoop bodies are detachably connected to define a fixed annular structure; a silica gel strip is fixed to the inner wall of the semicircular hoop body, the length direction of the silica gel strip is arranged in the circumferential direction of the semicircular hoop body, and the width of the silica gel strip is larger than the axial length of the semicircular hoop body. The inner side of the silica gel strip is used as a contact side of the contact quartz tube; and two shackles are mounted on the outer wall of the semicircular hoop body. According to the invention, the quartz tube is clamped by the two semi-circular hoop bodies, so that the quartz tube is convenient to disassemble and assemble; the silica gel strip is mounted between the semicircular hoop body and the quartz tube, so that direct contact between the quartz tube and the semicircular hoop body is effectively protected, and the risk that the quartz tube is broken by clamping is avoided; and the quartz tube is hoisted by friction force between the silica gel strip and the quartz tube, which is safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of silicon carbide furnace crystal growth, and in particular to a hoisting mechanism. Background Art

[0002] When growing silicon carbide crystals by the PVT (physical vapor deposition) method, quartz tubes are often used as reaction chambers because of their excellent high temperature resistance and corrosion resistance. In the PVT furnace for growing 6-inch and 8-inch silicon carbide crystals, the diameter of the quartz tube is usually around 400mm, the wall thickness is about 10mm, the height is 1 meter or even higher, and the weight of the quartz tube is 30-40kg. Because the quartz tube is a brittle material, it cannot be bumped during installation. The quartz tube is in the shape of a round tube and has a very smooth surface, which is not conducive to the operator's barehanded grasping. However, due to the lack of suitable tools, the current market mainly relies on manual handling and installation of quartz tubes. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a quartz tube hanging mechanism, which has solved at least one of the above-mentioned technical problems.

[0004] The technical solution of the present invention is: a quartz tube hoisting mechanism, characterized in that it comprises a tube hoop, wherein the tube hoop comprises two semicircular ring-shaped hoop bodies, and the two ends of the two semicircular ring-shaped hoop bodies are detachably connected to form a fixed annular structure;

[0005] A silicone strip is fixed to the inner wall of the semicircular ring hoop body, the length direction of the silicone strip is arranged along the circumference of the semicircular ring hoop body, and the width of the silicone strip is greater than the axial length of the semicircular ring hoop body;

[0006] The inner side of the silica gel strip is used as the contact side contacting the quartz tube;

[0007] Two shackles are installed on the outer wall of the semicircular ring hoop body.

[0008] The invention clamps the quartz tube by embracing two semicircular ring-shaped hoops together, which is convenient for assembly and disassembly; each shackle is used as a lifting point, and there are four lifting points, which can ensure stability during lifting; a silicone strip is installed between the semicircular ring-shaped hoops and the quartz tube, which effectively protects the direct contact between the quartz tube and the semicircular ring-shaped hoops and avoids the risk of the quartz tube being crushed; the friction between the silicone strip and the quartz tube is used to lift the quartz tube, which is safe and reliable.

[0009] Further preferably, the inner diameter of the silica gel strip matches the outer wall of the quartz tube.

[0010] Further preferably, the radial thickness of the silicone strip at the area where it contacts the semicircular ring-shaped hoop body is equal to half of the difference between the inner diameter of the semicircular ring-shaped hoop body and the outer diameter of the quartz tube.

[0011] Further preferably, the radial thickness of the silicone strip in the area where it contacts the semicircular ring hoop body is 5 mm.

[0012] Further preferably, an upper strip-shaped protrusion and a lower strip-shaped protrusion are respectively fixed to two ends of the silicone strip in the axial direction, and the semicircular ring-shaped hoop body is sandwiched between the upper strip-shaped protrusion and the lower strip-shaped protrusion.

[0013] Further preferably, the silicone strip is an adhesive-backed silicone strip, and the adhesive backing of the adhesive-backed silicone strip is located inside the semicircular ring hoop body and is adhesively connected thereto.

[0014] Further preferably, the semicircular ring hoop body comprises a first mounting portion, an arc-shaped bending portion and a second mounting portion which are sequentially connected;

[0015] The first mounting portion and the second mounting portion are both provided with through holes for passing screws;

[0016] A nut is fixed to any one of the first mounting portion and the second mounting portion, and the inner hole of the nut is connected to the through hole;

[0017] The two semicircular ring hoops are threadedly connected to the nut by screws passing through the holes;

[0018] The nuts of the two semicircular ring hoops are fixed on different sides.

[0019] Easy to assemble.

[0020] Further preferably, the screw is a knurled high head screw.

[0021] Further preferably, when the two semicircular ring hoops are connected, the knurled high head screw is manually tightened to make the two semicircular ring hoops tightly embrace each other, thereby squeezing the silicone strip to make it fit on the outer wall of the quartz tube. It is forbidden to use tools such as wrenches during the tightening process.

[0022] Further preferably, the shackle is a straight shackle;

[0023] The straight shackle is connected to one end of a sling, and one end of the sling is connected to a hook for hoisting the quartz tube.

[0024] Further preferably, a shackle mounting portion is fixed to the outer walls of the two semicircular ring hoops, and the shackle mounting portion includes two extended ears arranged side by side, and the shackle is detachably connected to the extended ears.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. It solves the problem that quartz tubes in the market are mainly installed by hand and cannot be hoisted;

[0027] 2. The problem of quartz tube being difficult to grasp is solved. The quartz tube is clamped by the tube clamp. Even if there is no mechanical lifting condition, the quartz tube can be manually carried with the help of a sling. The lifting mechanism clamps the quartz tube by holding two semicircular tube clamps together, which is convenient for disassembly and assembly; the lifting mechanism only needs manual locking to clamp the quartz tube without the need to tighten the bolts; the lifting mechanism has 4 lifting points to ensure stability during lifting.

[0028] 3. A silicone strip is installed between the semicircular hoop and the quartz tube, which effectively protects the direct contact between the quartz tube and the semicircular hoop and avoids the risk of the quartz tube being crushed; the friction between the silicone strip and the quartz tube is used to hoist the quartz tube, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a specific embodiment 1 of the present invention;

[0031] Figure 3 It is a top view of specific embodiment 1 of the present invention.

[0032] In the figure, 1. quartz tube; 2. semicircular ring hoop; 3. knurled high head screw; 4. adhesive-backed silicone strip; 5. straight shackle. DETAILED DESCRIPTION

[0033] See also Figures 1 to 3 Specific embodiment 1, a quartz tube hoisting mechanism, including a pipe hoop, the pipe hoop includes two semicircular ring hoop bodies 2, the two ends of the two semicircular ring hoop bodies 2 are detachably connected to form a fixed annular structure; the inner wall of the semicircular ring hoop body 2 is fixed with a silicone strip 4, the length direction of the silicone strip 4 is arranged along the circumference of the semicircular ring hoop body 2, and the width of the silicone strip 4 is greater than the axial length of the semicircular ring hoop body 2; the inner side of the silicone strip 4 is the contact side contacting the quartz tube 1; two shackles are installed on the outer wall of the semicircular ring hoop body 2. The present invention clamps the quartz tube 1 by embracing the two semicircular ring hoop bodies 2 together, which is convenient for disassembly and assembly; each shackle is used as a lifting point, and has 4 lifting points to ensure stability during lifting; a silicone strip 4 is installed between the semicircular ring hoop body 2 and the quartz tube 1, which effectively protects the direct contact between the quartz tube 1 and the semicircular ring hoop body 2, and avoids the risk of the quartz tube 1 being crushed; the friction between the silicone strip 4 and the quartz tube 1 is used to hoist the quartz tube 1, which is safe and reliable. The width direction of the silicone strip 4 is parallel to the axial direction of the semicircular ring hoop body.

[0034] The inner diameter of the silicone strip 4 matches the outer wall of the quartz tube 1. The radial thickness of the silicone strip 4 at the area where it contacts the semicircular ring hoop body is equal to half of the difference between the inner diameter of the semicircular ring hoop body 2 and the outer diameter of the quartz tube 1.

[0035] The radial thickness of the silicone strip 4 in the area where it contacts the semicircular ring hoop body is 5 mm. The upper strip-shaped protrusion and the lower strip-shaped protrusion are fixed to the two ends of the silicone strip 4 in the axial direction, and the semicircular ring hoop body is sandwiched between the upper strip-shaped protrusion and the lower strip-shaped protrusion. The silicone strip 4 is a silicone strip with adhesive backing, and the adhesive backing of the silicone strip with adhesive backing is glued to the inner side of the semicircular ring hoop body.

[0036] The semicircular ring hoop body comprises a first mounting portion, an arc-shaped bending portion and a second mounting portion connected in sequence; a through hole for passing a screw is provided on the first mounting portion and the second mounting portion; a nut is fixed to any one of the first mounting portion and the second mounting portion, and the inner hole of the nut is connected to the through hole; the two semicircular ring hoop bodies are threadedly connected to the nut by screws passing through the through holes; the nuts of the two semicircular ring hoop bodies are fixed on different sides. It is convenient for assembly. The screw is a knurled high-head screw 3. When the two semicircular ring hoop bodies are connected, the knurled high-head screw 3 is manually tightened to make the two semicircular ring hoop bodies hold tightly, thereby squeezing the silicone strip 4 to make it fit on the outer wall of the quartz tube 1. It is forbidden to use tools such as wrenches during the tightening process. The first mounting portion and the second mounting portion are parallel to each other and are in the same plane. The first mounting portion and the second mounting portion are provided with at least two through holes along the central axis direction of the arc-shaped bending portion.

[0037] The shackle is a straight shackle 5 ; the straight shackle 5 is connected to one end of a sling, and one end of the sling is connected to a hook to hoist the quartz tube 1 .

[0038] A shackle mounting portion is fixed to the outer walls of the two semicircular ring hoops. The shackle mounting portion comprises two extending ears arranged side by side. The shackle is detachably connected to the extending ears.

[0039] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A quartz tube hoisting mechanism, characterized in that: It comprises a pipe hoop, which comprises two semicircular ring-shaped hoop bodies, and the two ends of the two semicircular ring-shaped hoop bodies are detachably connected to form a fixed ring structure; A silicone strip is fixed to the inner wall of the semicircular ring hoop body, the length direction of the silicone strip is arranged along the circumference of the semicircular ring hoop body, and the width of the silicone strip is greater than the axial length of the semicircular ring hoop body; The inner side of the silica gel strip is used as the contact side contacting the quartz tube; Two shackles are installed on the outer wall of the semicircular ring hoop body.

2. A quartz tube hanging mechanism according to claim 1, characterized in that: The inner diameter of the silica gel strip matches the outer wall of the quartz tube.

3. A quartz tube hanging mechanism according to claim 1, characterized in that: The radial thickness of the silicone strip at the area where it contacts the semicircular ring-shaped hoop body is equal to half of the difference between the inner diameter of the semicircular ring-shaped hoop body and the outer diameter of the quartz tube.

4. A quartz tube hanging mechanism according to claim 1, characterized in that: An upper strip-shaped protrusion and a lower strip-shaped protrusion are respectively fixed to two ends of the silicone strip in the axial direction, and the semicircular ring-shaped hoop body is sandwiched between the upper strip-shaped protrusion and the lower strip-shaped protrusion.

5. The quartz tube hanging mechanism according to claim 1, characterized in that: The silicone strip is an adhesive-backed silicone strip, and the adhesive back of the adhesive-backed silicone strip is located inside the semicircular ring hoop body and is glued and connected.

6. A quartz tube hanging mechanism according to claim 1, characterized in that: The semicircular ring hoop body comprises a first mounting portion, an arc-shaped bending portion and a second mounting portion which are connected in sequence; The first mounting portion and the second mounting portion are both provided with through holes for passing screws; A nut is fixed to any one of the first mounting portion and the second mounting portion, and the inner hole of the nut is connected to the through hole; The two semicircular ring hoops are threadedly connected to the nut by screws passing through the holes; The nuts of the two semicircular ring hoops are fixed on different sides.

7. A quartz tube hanging mechanism according to claim 6, characterized in that: The screw is a knurled high head screw.

8. The quartz tube hanging mechanism according to claim 1, characterized in that: When the two semicircular ring hoops are connected, the knurled high head screw is manually tightened to make the two semicircular ring hoops tightly embraced, thereby squeezing the silicone strip to make it fit on the outer wall of the quartz tube.

9. The quartz tube hanging mechanism according to claim 1, characterized in that: The shackle is a straight shackle; The straight shackle is connected to one end of a sling, and one end of the sling is connected to a hook for hoisting the quartz tube.

10. The quartz tube hanging mechanism according to claim 1, characterized in that: A shackle mounting portion is fixed to the outer walls of the two semicircular ring hoops. The shackle mounting portion comprises two extending ears arranged side by side. The shackle is detachably connected to the extending ears.

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