Supporting rod bolt tightening device for single crystal furnace

Abstract

The utility model discloses a supporting rod bolt tightening device for a single crystal furnace, and relates to the technical field of monocrystalline silicon production. The screwdriver head is fixedly arranged at one end of the first rod body, and the screwdriver head is matched with the supporting rod bolt; the rotary handle is fixedly mounted at the other end of the first rod body; and the positioning ring is coaxially and fixedly arranged on the outer side of the first rod body in a sleeving mode, and the diameter of the positioning ring is equal to the diameter of the cross section of the inner cavity of the supporting rod. The problem that an original tool is difficult to position is solved, rapid and accurate positioning is achieved, abrasion of repeated alignment actions to the supporting rod and the bolt can be reduced, the service life of the supporting rod and the bolt is prolonged, operation time is shortened, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal silicon production, in particular to a device for tightening and loosening the support rod bolts of a single crystal furnace. Background Art

[0002] In the field of single crystal silicon production, the various process technologies for manufacturing silicon single crystals by the Czochralski method are becoming increasingly perfect, and the main equipment used is a single crystal furnace. The silicon material support system in the single crystal furnace cavity mainly includes a quartz crucible, a crucible sidewall, a crucible tray, a support rod, and a crucible shaft. Among them, the crucible tray and the crucible sidewall are arranged in the furnace cavity and supported by the support rod. The top of the support rod is connected to the crucible tray and the crucible sidewall. The crucible tray and the crucible sidewall are used to place the quartz crucible. The bottom of the support rod is connected to the crucible shaft at the bottom of the furnace cavity and fastened by bolts. The crucible shaft drives the quartz crucible to lift and rotate through the support rod.

[0003] In the prior art, the bolts at the bottom inside the support rod need to be connected to the crucible shaft at the bottom of the furnace cavity during furnace loading, and the two components need to be firmly fixed together to ensure the stability and safety inside the furnace. Since the support rod body is a slender hollow tube and the bolts are located at the center bottom of the support rod. The diameter of the wrench rod currently used is smaller than the inner diameter of the support rod. When it extends into the bottom of the support rod, it will shake and cannot be positioned by observation, resulting in difficulty in aligning with the bolts. Repeated alignment will not only cause wear to the support rod and bolts, but also increase the working time of workers and reduce work efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a device for tightening and loosening the support rod bolts of a single crystal furnace.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A device for tightening and loosening the support rod bolts of a single crystal furnace, comprising:

[0007] A first rod body;

[0008] A screwdriver head, fixedly arranged at one end of the first rod body, and the screwdriver head is adapted to the support rod bolt;

[0009] A rotating handle, fixedly installed at the other end of the first rod body;

[0010] And a positioning ring, coaxially and fixedly sleeved outside the first rod body, and the diameter of the positioning ring is equal to the cross-sectional diameter of the inner cavity of the support rod.

[0011] As a preferred scheme of the device for tightening and loosening the support rod bolts of the single crystal furnace of the utility model, wherein: the axis of the screwdriver head coincides with the axis of the first rod body.

[0012] As a preferred embodiment of the rod support bolt tightening and loosening device for a single crystal furnace of the present utility model, the following is provided: The rotating handle includes a second rod body fixedly connected to the end of the first rod body, and the axis of the first rod body is located on the perpendicular bisector of the second rod body.

[0013] As a preferred embodiment of the rod support bolt tightening and loosening device for a single crystal furnace of the present utility model, the following is provided: The rotating handle further includes two reinforcing ribs. The two reinforcing ribs are located on both sides of the first rod body, and both ends of each reinforcing rib are fixedly connected to the first rod body and the second rod body respectively.

[0014] As a preferred embodiment of the rod support bolt tightening and loosening device for a single crystal furnace of the present utility model, the following is provided: The included angle between the reinforcing rib and the first rod body is 45°.

[0015] As a preferred embodiment of the rod support bolt tightening and loosening device for a single crystal furnace of the present utility model, the following is provided: The distance between the positioning ring and the screwdriver head is less than the distance between the positioning ring and the rotating handle.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) In the present utility model, a positioning ring is sleeved outside the first rod body. When the first rod body extends into the inner cavity of the rod support, since the diameter of the positioning ring is equal to the cross-sectional diameter of the inner cavity of the rod support, the side wall of the positioning ring fits against the inner wall of the rod support. At this time, the positioning ring plays a positioning role, ensuring that the axis of the first rod body coincides with the axis of the inner cavity of the rod support, thereby ensuring that the screwdriver head accurately aligns with the bolt at the bottom of the rod support, solving the problem of difficult positioning of the original tooling, shortening the operation time, improving the work efficiency, and at the same time, effectively avoiding the wear of the screwdriver head on the inner wall of the rod support and the bolt at the bottom of the rod support.

[0018] (2) In the present utility model, a rotating handle is provided at the upper end of the first rod body. By providing the rotating handle, it is more convenient for the operator to rotate the first rod body, thereby facilitating the tightening of the bolt at the bottom of the rod support.

[0019] (3) In the present utility model, a reinforcing rib is further provided between the first rod body and the second rod body, effectively improving the connection stability between the first rod body and the second rod body, thereby ensuring the transmission stability between the first rod body and the second rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic structural diagram of the rod bolt tightening and loosening device for a single crystal furnace provided by the present utility model;

[0022] Figure 2 Schematic diagram of the rod bolt tightening and loosening device for a single crystal furnace provided by the present utility model during use;

[0023] Wherein: 1. First rod body; 2. Screwdriver head; 3. Positioning ring; 4. Second rod body; 5. Reinforcing rib; 6. Rod; 7. Bolt. Specific embodiments

[0024] To make the content of the present utility model easier to be clearly understood, the following further detailed description of the present utility model is made according to specific embodiments and in combination with the accompanying drawings.

[0025] Figure 1 Schematic structural diagram of the rod bolt tightening and loosening device for a single crystal furnace provided by an embodiment of the present application. The device includes: a first rod body 1, a screwdriver head 2, a rotating handle, and a positioning ring 3. Wherein, when the first rod body 1 extends into the inner cavity of the rod 6, the positioning ring 3 fits against the side wall of the inner cavity of the rod 6 to position the first rod body 1 and ensure that the screwdriver head 2 is aligned with the bolt 7 at the bottom of the rod 6.

[0026] Specifically, referring to Figure 1 , the screwdriver head 2 is fixedly installed at the lower end of the first rod body 1, and the axis of the screwdriver head 2 coincides with the axis of the first rod body 1.

[0027] It should be noted that the cross-sectional shape of the screwdriver head 2 is adapted to the notch shape of the head of the bolt 7 at the bottom of the rod 6. By rotating the first rod body 1, the end of the screwdriver head 2 can be inserted into the notch of the bolt 7 at the bottom of the rod 6, thereby realizing the tightening of the bolt 7.

[0028] The rotating handle is fixedly installed at the upper end of the first rod body 1. By providing the rotating handle, it is more convenient for the operator to rotate the first rod body 1, thereby tightening the bolt 7 at the bottom of the rod 6. Referring to Figure 1 , the rotating handle includes a second rod body 4 fixedly connected to the upper end of the first rod body 1. Wherein, the axis of the first rod body 1 is located on the perpendicular bisector of the second rod body 4, so that the first rod body 1 and the second rod body 4 form a "T" shaped structure.

[0029] Preferably, a reinforcing rib 5 is further provided between the first rod body 1 and the second rod body 4. Referring to Figure 1, there are two reinforcing ribs 5. The two reinforcing ribs 5 are respectively located on the left and right sides of the first rod body 1, and both ends of each reinforcing rib 5 are welded to the first rod body 1 and the second rod body 4 respectively. By providing the reinforcing ribs 5, the connection stability between the first rod body 1 and the second rod body 4 is effectively improved, thus ensuring the transmission stability between the first rod body 1 and the second rod body 4.

[0030] In this embodiment, the included angle between the reinforcing rib 5 and the first rod body 1 is 45°.

[0031] The positioning ring 3 has a hollow cylindrical structure and is fixedly sleeved on the outer side of the first rod body 1. The axis of the positioning ring 3 coincides with the axis of the first rod body 1, and the diameter of the positioning ring 3 is equal to the cross-sectional diameter of the inner cavity of the supporting rod 6. Refer to Figure 2 , when the first rod body 1 extends into the inner cavity of the supporting rod 6 and the positioning ring 3 is located inside the supporting rod 6, since the diameter of the positioning ring 3 is equal to the cross-sectional diameter of the inner cavity of the supporting rod 6, the side wall of the positioning ring 3 is in contact with the inner wall of the supporting rod 6. At this time, the positioning ring 3 plays a positioning role, ensuring that the axis of the first rod body 1 coincides with the axis of the inner cavity of the supporting rod 6, and further ensuring that the screwdriver head 2 accurately aligns with the bolt 7 at the bottom of the supporting rod 6, effectively avoiding wear on the inner wall of the supporting rod 6 and the bolt 7 at the bottom of the supporting rod 6 caused by the screwdriver head 2.

[0032] It should be noted that the positioning ring 3 is adjacent to the lower end of the first rod body 1, that is, the distance between the positioning ring 3 and the screwdriver head 2 is less than the distance between the positioning ring 3 and the rotating handle. In this way, when the first rod body 1 extends into the inner cavity of the supporting rod 6, the positioning ring 3 can position the first rod body 1 earlier.

[0033] In this embodiment, the positioning ring 3 is made of stainless steel.

[0034] Thus, the technical solution of the present application solves the problem that the original tooling is difficult to position, realizes rapid and accurate positioning, can reduce the wear of the supporting rod and the bolt caused by repeated alignment actions, improves the service life of the supporting rod and the bolt, shortens the operation time, and improves the work efficiency.

[0035] In addition to the above embodiments, the present utility model may also have other implementation manners; all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A support rod bolt tightening device for a single crystal furnace, characterized in that: include: A first rod body (1); A screwdriver head (2) is fixedly arranged on one end of the first rod body (1), and the screwdriver head (2) is adapted to the bolt (7) of the support rod (6); A rotating handle fixedly mounted on the other end of the first rod body (1); And, a positioning ring (3) is coaxially fixedly sleeved on the outer side of the first rod body (1), and the diameter of the positioning ring (3) is equal to the cross-sectional diameter of the internal cavity of the supporting rod (6).

2. The support rod bolt tightening device for a single crystal furnace according to claim 1, characterized in that: The axis of the screwdriver head (2) coincides with the axis of the first rod body (1).

3. The support rod bolt tightening device for a single crystal furnace according to claim 1, characterized in that: The rotating handle comprises a second rod body (4) fixedly connected to the end of the first rod body (1), and the axis of the first rod body (1) is located on the perpendicular bisector of the second rod body (4).

4. The support rod bolt tightening device for a single crystal furnace according to claim 3, characterized in that: The rotating handle further comprises two reinforcing ribs (5), the two reinforcing ribs (5) being located on both sides of the first rod body (1), and the two ends of each reinforcing rib (5) being respectively fixedly connected to the first rod body (1) and the second rod body (4).

5. The support rod bolt tightening device for a single crystal furnace according to claim 4, characterized in that: The angle between the reinforcing rib (5) and the first rod body (1) is 45°.

6. The support rod bolt tightening device for a single crystal furnace according to claim 1, characterized in that: The distance between the positioning ring (3) and the screwdriver head (2) is smaller than the distance between the positioning ring (3) and the rotating handle.

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