Silicon carbide double-paddle head connecting structure

Abstract

The utility model discloses a silicon carbide double-paddle head connecting structure which comprises symmetrically-arranged silicon carbide paddles, open holes are formed in paddle bodies of the silicon carbide paddles at intervals, limiting plates are arranged on the opposite sides of the paddle heads of the two silicon carbide paddles, the limiting plates penetrate through the open holes through first semi-rigid connecting pieces to be bound to the silicon carbide paddles, and the first semi-rigid connecting pieces penetrate through the open holes to be bound to the silicon carbide paddles. And a second semi-rigid connecting piece is connected between the two limiting plates. According to the device, the distance between the paddle heads of the silicon carbide double paddles can be limited, the risk that a carrier boat falls off due to the fact that the distance between the double paddles is increased is avoided, a hard connecting piece is not used, and fixing points do not need to be arranged in the silicon carbide paddles; and subfissure and looseness of the silicon carbide paddle caused by thermal expansion and cold contraction at the joint of the connecting piece and the silicon carbide paddle are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, in particular to a silicon carbide double-paddle paddle head connection structure. Background Art

[0002] Currently, the diffusion process plays a vital role in the manufacturing process of solar cells. During the automated production process of the process furnace, a pusher boat (usually a silicon carbide paddle) is required to place the silicon wafer boat into the quartz furnace tube for the process and then remove the silicon wafer boat after the process is completed. When in use, the existing silicon carbide paddle is generally fixed to the conveyor device, and the paddle head is kept suspended to facilitate entry into the furnace tube reaction chamber. The paddle body is provided with openings (such as Figure 3 As shown in the figure, the holes allow for smoother airflow without affecting the paddle's load-bearing capacity, thereby making the fire temperature more uniform.

[0003] Although silicon carbide propellers are heat-resistant, they will still deform to a certain extent during long-term use, which can increase the distance between the propeller heads and put the boat at risk of falling. To limit the increase in the distance between the propeller heads, the current practice is to install a hard connector between the propeller heads, connecting one end of the two propellers through the hard connector to ensure the stability of the distance between the propeller heads. However, because the thermal expansion coefficient of the hard connector is unlikely to be the same as that of the silicon carbide propeller, the fixed connection inside the silicon carbide propeller is easily affected by thermal expansion and contraction, causing the silicon carbide slurry to crack and loosen, affecting the stability of the boat's movement. Utility Model Content

[0004] The purpose of the present utility model is to provide a silicon carbide double-propeller paddle head connection structure, which can limit the spacing between the silicon carbide double-propeller paddle heads, avoid the risk of the carrier boat falling due to the increase in the spacing between the two propellers, and does not use hard connectors, and does not need to set fixed points inside the silicon carbide paddles, so as to avoid the connection between the connectors and the silicon carbide paddles due to thermal expansion and contraction, causing hidden cracks and loosening of the silicon carbide paddles.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a silicon carbide double-propeller paddle head connection structure, comprising symmetrically arranged silicon carbide paddles, the paddle bodies of the silicon carbide paddles being provided with openings at intervals, and the paddle heads of the two silicon carbide paddles being provided with limit plates on the opposite sides thereof, the limit plates being bound to the silicon carbide paddles through the openings via a first semi-rigid connecting member, and a second semi-rigid connecting member being connected between the two limit plates.

[0006] A further improvement of the present invention is that horizontal plates are provided at the upper and lower ends of the adjacent sides of the two limiting plates, the horizontal plates are provided with through holes, and the second semi-rigid connecting member passes through the four through holes in sequence and is fixed end to end.

[0007] A further improvement of the present invention is that the ends of the second semi-rigid connector are fixed by crimping with sleeves.

[0008] A further improvement of the present invention is that a vertical plate is provided between the two horizontal plates on each limiting plate, the vertical plate and the limiting plate are vertically arranged, and the first semi-rigid connecting member passes through the opening and connects the end to end to bind the vertical plate and the limiting plate to the silicon carbide paddle.

[0009] A further improvement of the present invention is that a pad is provided in the opening on the silicon carbide paddle closest to its paddle head, and the first semi-rigid connecting member passes through the opening and contacts the pad and the vertical plate to bind the limit plate to the silicon carbide paddle.

[0010] A further improvement of the present invention is that the edges of the limiting plate and the vertical plate are provided with limiting slots for the first semi-rigid connecting member to surround.

[0011] A further improvement of the present invention is that an air inlet is provided on the vertical plate to facilitate air circulation in the paddle body.

[0012] A further improvement of the present invention is that the limiting plate, the horizontal plate and the vertical plate are integrally cut and bent.

[0013] A further improvement of the present invention is that the spacing between the two horizontal plates is adapted to the thickness of the paddle head of the silicon carbide paddle and a gap is left between the two horizontal plates and the paddle head.

[0014] A further improvement of the present invention is that both the first semi-rigid connecting member and the second semi-rigid connecting member are steel ropes.

[0015] The beneficial effects of the present invention are:

[0016] The utility model uses a steel wire rope and a limit plate to limit the spacing between the paddle heads of the silicon carbide double propellers, thereby avoiding the risk of the carrier boat falling due to the increase in the spacing between the two propellers. No hard connectors are used, and there is no need to set fixed points inside the silicon carbide paddles, which avoids the connection between the connector and the silicon carbide paddles due to thermal expansion and contraction, which may cause hidden cracks and loosening of the silicon carbide paddles.

[0017] In the prior art, a hard connector is used to connect one end of the two propellers to ensure the stability of the distance between the propeller heads. However, in the actual installation of the silicon carbide propeller, there may be a difference in the horizontality of the two propellers. After being connected through a hard connector, the difference becomes fixed, resulting in the higher silicon carbide propeller bearing a greater load. However, through the present invention, the silicon carbide propeller with a greater load-bearing capacity can naturally droop, and the weight on it is evenly transferred to the other propeller, thereby extending the service life of the equipment.

[0018] In the utility model, the first semi-rigid connecting member passes through the opening and contacts the pad and the vertical plate to bind the limit plate to the silicon carbide paddle, thereby reducing the direct friction between the first semi-rigid connecting member and the silicon carbide paddle, reducing damage to the silicon carbide paddle, and the pad and the vertical plate can be quickly replaced after wear, which is low in cost.

[0019] The utility model sleeves the paddle head by cooperating with a limit plate, a horizontal plate and a vertical plate, and then fixes it through a first semi-rigid connecting member, thereby improving the stability of the connection. Even if there is a certain gap between it and the paddle head, it will not separate, making it easy to adapt to thermal expansion and contraction without damaging the silicon carbide paddle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the silicon carbide paddle structure in the prior art.

[0021] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0022] Figure 3 It is a partially enlarged schematic diagram of the main structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the main structure of the present invention (the vertical plate is not shown in the figure).

[0024] Figure 5 It is a schematic side view of the structure of the present utility model.

[0025] In the figure, 1-silicon carbide propeller, 2-opening, 3-limiting plate, 4-first semi-rigid connecting member, 5-second semi-rigid connecting member, 6-horizontal plate, 7-perforation, 8-casing, 9-vertical plate, 10-pad, 11-limiting slot, 12-air inlet, 13-propeller tail, 14-opening. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0027] Combine Figures 1 to 5 As can be seen, a silicon carbide double-blade paddle head connection structure includes symmetrically arranged silicon carbide paddles 1, with openings 2 spaced apart on the paddle body of the silicon carbide paddle 1. A limit plate 3 is provided on the opposite side of the paddle head of each silicon carbide paddle 1. The limit plate 3 is fastened to the silicon carbide paddle 1 through the opening 2 via a first semi-rigid connector 4. A second semi-rigid connector 5 is connected between the two limit plates 3. The first semi-rigid connector 4 does not need to be completely tightened, and the two limit plates 3 can remain in contact with the silicon carbide paddles through the second semi-rigid connector 5.

[0028] Horizontal plates 6 are provided at the upper and lower ends of the adjacent sides of the two limiting plates 3. The horizontal plates 6 are provided with perforations 7. Second semi-rigid connectors 5 pass through the four perforations 7 in sequence and are fixed end to end. The second semi-rigid connectors 5 are formed into a rectangular shape to prevent the increase in the distance between the two propeller heads.

[0029] The ends of the second semi-rigid connector 5 are fixed by crimping with a sleeve 8. Optionally, the ends of the second semi-rigid connector 5 can also be connected by welding. Preferably, the limit plate 3, the horizontal plate 6 and the vertical plate 9 are integrally cut and bent.

[0030] A vertical plate 9 is provided between the two horizontal plates 6 on each limiting plate 3. The vertical plate 9 is arranged perpendicular to the limiting plate 3. The first semi-rigid connector 4 passes through the opening 2 and connects the vertical plate 9 and the limiting plate 3 end to end to bind the vertical plate 9 and the limiting plate 3 to the silicon carbide paddle 1. Preferably, the first semi-rigid connector 4 is also crimped and fixed end to end by a sleeve 8.

[0031] A spacer 10 is provided in the opening 2 closest to the paddle head of the silicon carbide paddle 1. After passing through the opening 2, the first semi-rigid connector 4 contacts the spacer 10 and the riser 9, securing the stopper 3 to the silicon carbide paddle 1. The width of the spacer 10 matches the width of the opening 2, with a certain gap between the spacer 10 and the opening 2.

[0032] The edges of the limiting plate 3 and the vertical plate 9 are provided with limiting notches 11 for the first semi-rigid connecting member 4 to surround.

[0033] The vertical plate 9 is provided with an air inlet 12 for ventilating the paddle body. The air inlet 12 is convenient for external air to flow into the hollow paddle body.

[0034] The distance between the two horizontal plates 6 is adapted to the thickness of the paddle head of the silicon carbide paddle 1 and a gap is left between the two horizontal plates 6 and the paddle head.

[0035] The first semi-rigid connector 4 and the second semi-rigid connector 5 have good flexibility and high temperature resistance. Preferably, the first semi-rigid connector 4 and the second semi-rigid connector 5 are both steel ropes.

[0036] The working principle of the silicon carbide double-propeller paddle head connection structure provided by the utility model is as follows: during installation, first place the two limit plates 3 on the opposite sides of the double propellers, temporarily position the limit plates 3 through the horizontal plates 6 at the upper and lower ends of the limit plates 3, pass one end of the first semi-rigid connecting member 4 through the opening 2 on the paddle body and then wrap around and connect the end to end to bind the limit plate 3 to the silicon carbide paddle 1, then pass the second semi-rigid connecting member 5 through the four through holes 7 and then connect the end to end to limit the expansion of the spacing between the double-propeller paddle heads.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are similarly included in the scope of patent protection of the present invention.

Claims

1. A silicon carbide double-blade paddle head connection structure, comprising symmetrically arranged silicon carbide paddles (1), wherein the paddle bodies of the silicon carbide paddles (1) are provided with openings (2) at intervals, characterized in that: A limiting plate (3) is provided on the opposite sides of the blade heads of the two silicon carbide blades (1); the limiting plate (3) is bound to the silicon carbide blade (1) through the opening (2) via a first semi-rigid connecting member (4); and a second semi-rigid connecting member (5) is connected between the two limiting plates (3).

2. The silicon carbide double-blade paddle head connection structure according to claim 1, characterized in that: Horizontal plates (6) are provided at the upper and lower ends of the adjacent sides of the two limiting plates (3), and the horizontal plates (6) are provided with perforations (7). The second semi-rigid connecting member (5) passes through the four perforations (7) in sequence and is fixed end to end.

3. The silicon carbide double-blade paddle head connection structure according to claim 2, characterized in that: The ends of the second semi-rigid connector (5) are crimped and fixed via a sleeve (8).

4. The silicon carbide double-blade paddle head connection structure according to claim 2, characterized in that: A vertical plate (9) is provided between the two horizontal plates (6) on each limiting plate (3), and the vertical plate (9) and the limiting plate (3) are arranged vertically. The first semi-rigid connecting member (4) passes through the opening (2) and is connected end to end to bind the vertical plate (9) and the limiting plate (3) to the silicon carbide paddle (1).

5. The silicon carbide double-blade paddle head connection structure according to claim 4, characterized in that: A pad (10) is provided in the opening (2) closest to the paddle head of the silicon carbide paddle (1), and the first semi-rigid connecting member (4) passes through the opening (2) and contacts the pad (10) and the vertical plate (9) to bind the limit plate (3) to the silicon carbide paddle (1).

6. The silicon carbide double-blade paddle head connection structure according to claim 4, characterized in that: The edges of the limiting plate (3) and the vertical plate (9) are provided with limiting notches (11) for facilitating the first semi-rigid connecting member (4) to surround.

7. The silicon carbide double-blade paddle head connection structure according to claim 4, characterized in that: The vertical plate (9) is provided with an air inlet (12) for facilitating air circulation in the paddle body.

8. The silicon carbide double-blade paddle head connection structure according to claim 4, characterized in that: The limiting plate (3), the horizontal plate (6) and the vertical plate (9) are integrally cut and bent.

9. The silicon carbide double-blade paddle head connection structure according to claim 4, characterized in that: The distance between the two horizontal plates (6) is adapted to the thickness of the blade head of the silicon carbide blade (1), and a gap is left between the two horizontal plates and the blade head.

10. The silicon carbide double-blade paddle head connection structure according to claim 1, characterized in that: The first semi-rigid connecting member (4) and the second semi-rigid connecting member (5) are both steel wire ropes.

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