A clamping structure for turbine teeth

Abstract

This utility model discloses a clamping structure for turbine gears, relating to the field of turbine gear technology. It includes a worm gear base plate, the top of which has multiple internal slots, each slot holding a worm gear gear assembly. The sidewall of the worm gear base plate has external slots, holding an annular baffle. A limiting mechanism is provided between the annular baffle and the worm gear base plate, and the worm gear gear assembly is clamped between the annular baffle and the worm gear base plate. The worm gear base plate provided by this utility model, while preventing loosening and improving positioning and assembly efficiency, simultaneously enhances the uniformity of force on the gear and the connection strength to prevent breakage. This solves the problems of easy gear loosening due to a single fixing method and lack of anti-loosening positioning mechanism in traditional turbine gear clamping structures, as well as stress concentration, gear breakage, and support deformation caused by unreasonable force design at the connection points.

Description

Technical Field

[0001] This utility model relates to the field of turbine tooth technology, and specifically to a clamping structure for turbine teeth. Background Technology

[0002] A clamping structure for turbine teeth is a mechanical structure that uses specific components (such as bolts, pressure plates, etc.) to apply pressure to fix the turbine teeth to the turbine body or related components, ensuring that they are stable and do not loosen during transmission.

[0003] Traditional turbine tooth clamping structures often use a single bolt connection or simple snap-fit ​​method to fix the turbine tooth, lacking a reliable anti-loosening and positioning mechanism. This makes the tooth prone to loosening under high-speed turbine operation and vibration conditions, and the positioning accuracy deviation gradually increases. This not only affects the transmission efficiency but also aggravates tooth surface wear. In addition, the stress design of the connection between the tooth assembly and the base plate in traditional structures is unreasonable, and stress concentration is obvious. During the torque transmission process, the tooth assembly is prone to fatigue damage due to uneven stress. After long-term use, failure problems such as tooth root fracture and support structure deformation often occur. Utility Model Content

[0004] In view of the problems existing in the current clamping structure for turbine teeth, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a clamping structure for turbine teeth, which solves the problems of easy loosening of teeth caused by the single fixing method and lack of anti-loosening positioning mechanism in traditional turbine teeth clamping structures, as well as stress concentration, tooth breakage and support deformation caused by unreasonable force design of the connection parts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A clamping structure for a turbine tooth includes a worm gear base plate. The top of the worm gear base plate has multiple inner slots, each of which engages with a worm gear tooth assembly. The side wall of the worm gear base plate has an outer slot, which engages with an annular baffle. A limiting mechanism is provided between the annular baffle and the worm gear base plate, and the worm gear tooth assembly is engaged between the annular baffle and the worm gear base plate. Each of the worm gear tooth assembly includes a high-strength support block, one end of which is fixedly connected to a tooth. A positioning mechanism is provided between each high-strength support block and an inner groove. Multiple reinforcing blocks are fixedly connected to the inner sidewall of the annular baffle. Multiple reinforcing grooves are provided on the sidewall of the worm gear base. Each reinforcing block engages with a corresponding reinforcing groove. A corresponding first limiting thread is provided on the surface of each reinforcing block and the worm gear base, and a first limiting anti-loosening bolt is threadedly connected to it. Preferably, the limiting mechanism includes an inner limiting ring, an outer limiting ring, a limiting seat, a second limiting threaded opening, and a second limiting loosening bolt. Multiple inner limiting rings are fixedly connected to the inner ring of the side wall surface of the worm gear base, and multiple outer limiting rings are fixedly connected to the outer ring of the side wall surface of the worm gear base. Multiple limiting seats are fixedly connected to the surface of the annular baffle. The surfaces of the inner limiting ring, the outer limiting ring, and the limiting seat are provided with corresponding second limiting threaded openings, and the second limiting threaded openings are internally threaded with second limiting loosening bolts. Preferably, the positioning mechanism includes a positioning port, a positioning post, and an elastic filler layer of nitrile rubber. Each high-strength support block has multiple positioning ports on its surface, and multiple positioning posts are fixedly connected in each inner slot. The surface of each positioning post is fixedly connected with an elastic filler layer of nitrile rubber, and each positioning post is inserted into a corresponding positioning port. Preferably, each of the high-strength support blocks includes a T-shaped end, one end of which is fixedly connected to an arc-shaped segment, and both ends of the arc-shaped segment are fixedly connected to multiple reinforcing support teeth. Furthermore, a silicone rubber composite soft protective layer is fixedly connected to the outer surface of each of the high-strength support blocks, and a polytetrafluoroethylene modified coating is provided on the inner wall of the inner slot.

[0007] Preferably, the cavity of the positioning post is fixedly connected with a cross-shaped reinforcing rib, the outer surface of the annular baffle is provided with a ceramic-based composite coating with a coating thickness of 50-80μm, and the inner surface of the annular baffle is provided with a graphene-modified epoxy resin coating with a coating thickness of 15-25μm.

[0008] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model utilizes a double-locking mechanism consisting of an inner groove and an annular baffle, along with a limiting mechanism (double anti-loosening bolts with inner and outer limiting rings). This reduces the loosening rate of the annular baffle by 95%, ensures radial offset of the tooth head ≤0.05mm, and eliminates axial movement. The positioning mechanism (positioning post + nitrile rubber layer) eliminates the fit gap, resulting in a vibration attenuation rate of 30%. The tooth head loosening rate is reduced by 90% compared to traditional structures, thus solving the loosening problem caused by single fixing.

[0009] 2. This utility model utilizes a high-strength support block with a "T-shaped end + arc segment + reinforced tooth block" structure, which improves the stress dispersion by 30% and reduces the stress concentration coefficient by 0.6. The reinforced block and reinforced groove increase the connection area by 50%. The first limit anti-loosening bolt (grade 10.9) can withstand an anti-loosening torque of ≥20 N·m. The positioning post has a built-in cross-shaped reinforcing rib, which improves the bending strength by 40% and reduces the tooth breakage rate by 90%, thus avoiding support deformation and breakage.

[0010] 3. This utility model utilizes a high-strength support block to improve wear resistance by 40%, a surface silicone rubber protective layer to reduce impact damage, an inner slot with a polytetrafluoroethylene coating to reduce frictional resistance by 60%, and easy disassembly and assembly. The annular baffle with a double-layer coating (ceramic-based wear resistance + graphene anti-corrosion) improves wear resistance by 5 times and reduces corrosion rate by 90%, extending the overall component's service life by 2-3 times and reducing maintenance frequency by 60%. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 This is a first cross-sectional view of the rear side of the present invention; Figure 4 This is a second cross-sectional view of the rear side of the present invention.

[0013] Explanation of reference numerals in the attached figures: 1. Worm gear base plate; 2. Inner groove; 3. Worm gear tooth assembly; 4. Outer groove; 5. Annular baffle; 6. High-strength support block; 7. Tooth; 8. Reinforced block; 9. Reinforced groove; 10. First limit threaded opening; 11. First limit anti-loosening bolt; 12. Inner limit ring; 13. Outer limit ring; 14. Limiting seat; 15. Second limit threaded opening; 16. Second limit loosening bolt; 17. Positioning port; 18. Positioning post; 19. Nitrile rubber elastic filler layer; 20. T-shaped end; 21. Arc-shaped segment; 22. Reinforced support tooth block; 23. Silicone rubber composite soft protective layer; 24. Cross-shaped reinforcing rib. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0015] This utility model discloses a clamping structure for turbine teeth.

[0016] This utility model provides, for example Figure 1-4The clamping structure for a turbine tooth shown includes a worm gear base plate 1. The top of the worm gear base plate 1 is provided with multiple inner slots 2, each inner slot 2 is engaged with a worm gear tooth assembly 3. The side wall of the worm gear base plate 1 is provided with an outer slot 4, and an annular baffle 5 is engaged with it. A limiting mechanism is provided between the annular baffle 5 and the worm gear base plate 1. The worm gear tooth assembly 3 is engaged between the annular baffle 5 and the worm gear base plate 1. Each worm gear tooth assembly 3 includes a high-strength support block 6, one end of which is fixedly connected to a tooth 7. A positioning mechanism is provided between each high-strength support block 6 and the inner groove 2. Multiple reinforcing blocks 8 are fixedly connected to the inner sidewall of the annular baffle 5. Multiple reinforcing grooves 9 are opened on the sidewall of the worm gear base plate 1. Each reinforcing block 8 is engaged with the corresponding reinforcing groove 9. Each reinforcing block 8 and the surface of the worm gear base plate 1 are provided with a corresponding first limiting threaded opening 10, and a first limiting anti-loosening bolt 11 is threadedly connected. The worm gear base plate 1 is forged from 45# steel, which improves the overall rigidity. 30% provides a stable mounting base for the worm gear tooth assembly 3. The inner slot 2 precisely engages with the worm gear tooth assembly 3, with a positioning deviation ≤0.05mm, preventing radial offset of the tooth. The outer slot 4 cooperates with the annular baffle 5 to form an axial limit on the worm gear tooth assembly 3, preventing axial movement of the tooth. The annular baffle 5 is made of Q355B steel with a bending strength ≥345MPa, capable of withstanding the axial impact force during tooth transmission. The limiting mechanism further enhances the connection stability between the annular baffle 5 and the worm gear base plate 1, improving the anti-loosening effect by 80%. The worm gear tooth assembly 3 utilizes a double-clamping mechanism (inner groove 2 + annular baffle 5), improving connection strength by 60% compared to traditional single-fixation methods and preventing tooth loosening during transmission. The high-strength support block 6, made of 20CrMnTi alloy with carburizing treatment, achieves a surface hardness of HRC58-62, increasing wear resistance by 40%. The tooth 7 employs a high-frequency quenching process, increasing contact fatigue strength by 50% and preventing early tooth wear. A positioning mechanism ensures a gapless fit between the high-strength support block 6 and the inner groove 2, reducing stress concentration by 30%. The reinforced block 8 and reinforced clamp... The slot 9 is snapped in, increasing the connection area between the annular baffle 5 and the worm gear base plate 1 by 50%, dispersing the radial force. The first limiting anti-loosening bolt 11 (performance grade 10.9) is designed with anti-loosening thread, with an anti-loosening torque ≥20 N·m, preventing the bolt from loosening due to vibration. Through the coordinated force of multiple components, the stress concentration problem at the connection part of the traditional structure is solved, and the tooth breakage rate is reduced by 90%. This solves the problems of easy tooth loosening caused by the single fixing method and lack of anti-loosening positioning mechanism in the traditional turbine tooth clamping structure, as well as the stress concentration, tooth breakage, and support deformation caused by unreasonable force design at the connection part. To strengthen the connection and limiting between the annular baffle and the worm gear base plate, and to prevent the annular baffle from loosening, such as... Figure 2 and 3 The limiting mechanism includes an inner limiting ring 12, an outer limiting ring 13, a limiting seat 14, a second limiting threaded opening 15, and a second limiting anti-loosening bolt 16. Multiple inner limiting rings 12 are fixedly connected to the inner ring of the side wall surface of the worm gear base 1, and multiple outer limiting rings 13 are fixedly connected to the outer ring of the side wall surface of the worm gear base 1. Multiple limiting seats 14 are fixedly connected to the surface of the annular baffle 5. Corresponding second limiting threaded openings 15 are formed on the surfaces of the inner limiting ring 12, outer limiting ring 13, and limiting seat 14, and the second limiting threaded opening 15 is internally threaded with a second limiting anti-loosening bolt 16. The inner limit ring 12 and the outer limit ring 13 form a bidirectional radial limit. The radial offset of the annular baffle 5 is ≤0.03mm. The limit bracket 14 is engaged between the inner limit ring 12 and the outer limit ring 13 to further limit the circumferential rotation of the annular baffle 5. The second limit threaded port 15 cooperates with the second limit anti-loosening bolt 16 to form a double bolt fixation, which improves the anti-loosening effect by 50% compared with the single bolt fixation. The inner and outer limit rings and bolts work together to reduce the loosening rate of the annular baffle 5 by 95%, ensuring the axial limit stability of the worm gear tooth assembly 3. To achieve precise positioning of the high-strength support block and the inner slot, and to eliminate fitting gaps, such as Figure 2 and 4 As shown, the positioning mechanism includes positioning ports 17, positioning posts 18, and a nitrile rubber elastic filling layer 19. Multiple positioning ports 17 are provided on the surface of each high-strength support block 6, and multiple positioning posts 18 are fixedly connected to each inner slot 2. A nitrile rubber elastic filling layer 19 is fixedly connected to the surface of each positioning post 18. Each positioning post 18 is inserted into its corresponding positioning port 17. The precise insertion of the positioning ports 17 and positioning posts 18 with a fit deviation ≤0.02mm ensures that the high-strength support block 6 has no radial movement. The nitrile rubber elastic filling layer 19 fills the fit gap, absorbs transmission vibration, and achieves a vibration attenuation rate of 30%. The elastic filling layer prevents hard contact between metals, reduces wear on the positioning parts, and extends the service life of the positioning posts 18 by 2 times. By eliminating the fit gap through the positioning mechanism, the stress concentration of the high-strength support block 6 is reduced by 40%, preventing support deformation. To optimize the stress structure of the high-strength support block and improve its resistance to deformation, such as Figure 4As shown, each high-strength support block 6 includes a T-shaped end 20, one end of which is fixedly connected to an arc-shaped segment 21. Both ends of the arc-shaped segment 21 are fixedly connected to multiple reinforcing support teeth 22. The T-shaped end 20 increases the contact area with the inner slot 2, improving the force distribution by 30% and avoiding local pressure deformation. The arc-shaped segment 21 ensures that stress is evenly transmitted along the arc surface, reducing the stress concentration factor by 0.6. The reinforcing support teeth 22 enhance the bending strength of the arc-shaped segment 21, with the bending deformation of the arc-shaped segment 21 ≤ 0.1 mm. The overall structural design increases the torsional strength of the high-strength support block 6 by 50%, making it suitable for high-torque transmission scenarios. To protect the surface of the high-strength support block and reduce the frictional resistance of the inner slot, such as Figure 2 and 4 As shown, each high-strength support block 6 has a silicone rubber composite soft protective layer 23 fixedly connected to its outer surface. The inner wall of the inner groove 2 is provided with a polytetrafluoroethylene modified coating. The silicone rubber composite soft protective layer 23 can buffer the transmission impact and avoid damage to the tooth block surface. The polytetrafluoroethylene modified coating (friction coefficient ≤ 0.05) reduces the frictional resistance of the inner wall of the inner groove 2 by 60%, which facilitates the installation and disassembly of the high-strength support block 6. At the same time, it improves the wear resistance of the inner wall and extends the service life of the inner groove 2 by 3 times. To enhance the structural strength of the positioning posts and improve the wear resistance and corrosion resistance of the annular baffle, such as Figure 1-4 As shown, the cavity of the positioning post 18 is fixedly connected with a cross-shaped reinforcing rib 24. The outer surface of the annular baffle 5 is provided with a ceramic-based composite coating with a thickness of 50-80μm. The inner surface of the annular baffle 5 is provided with a graphene-modified epoxy resin coating with a thickness of 15-25μm. The cross-shaped reinforcing rib 24 improves the bending strength of the positioning post 18 by 40%, and it can withstand a radial force of ≥50N without breaking. The ceramic-based composite coating improves the wear resistance of the outer surface of the annular baffle 5 by 5 times and has excellent scratch resistance. The graphene-modified epoxy resin coating can resist external humid and corrosive environments, and the corrosion rate of the annular baffle 5 is reduced by 90%.

[0017] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A clamping structure for turbine gear teeth, comprising a worm gear base disk (1), characterized in that, The top of the worm gear base plate (1) is provided with multiple inner slots (2), each inner slot (2) is engaged with a worm gear tooth assembly (3), the side wall of the worm gear base plate (1) is provided with an outer slot (4), and an annular baffle (5) is engaged with it. A limiting mechanism is provided between the annular baffle (5) and the worm gear base plate (1), and the worm gear tooth assembly (3) is engaged between the annular baffle (5) and the worm gear base plate (1). Each of the worm gear tooth assembly (3) includes a high-strength support block (6), one end of which is fixedly connected to a tooth (7). A positioning mechanism is provided between each of the high-strength support block (6) and the inner groove (2). Multiple reinforcing blocks (8) are fixedly connected to the inner sidewall of the annular baffle (5). Multiple reinforcing grooves (9) are opened on the sidewall of the worm gear base plate (1). Each reinforcing block (8) is engaged with the corresponding reinforcing groove (9). Each reinforcing block (8) and the surface of the worm gear base plate (1) are provided with a corresponding first limiting threaded opening (10), and a first limiting anti-loosening bolt (11) is threadedly connected.

2. The clamping structure for turbine teeth according to claim 1, characterized in that, The limiting mechanism includes an inner limiting ring (12), an outer limiting ring (13), a limiting seat (14), a second limiting threaded opening (15), and a second limiting release bolt (16). Multiple inner limiting rings (12) are fixedly connected to the inner ring of the side wall surface of the worm gear base (1), and multiple outer limiting rings (13) are fixedly connected to the outer ring of the side wall surface of the worm gear base (1). Multiple limiting seats (14) are fixedly connected to the surface of the annular baffle (5). The surfaces of the inner limiting ring (12), the outer limiting ring (13), and the limiting seat (14) are provided with corresponding second limiting threaded openings (15), and the second limiting threaded opening (15) is internally threaded with a second limiting release bolt (16).

3. The clamping structure for turbine teeth according to claim 1, characterized in that, The positioning mechanism includes a positioning port (17), a positioning post (18), and a nitrile rubber elastic filling layer (19). Each high-strength support block (6) has multiple positioning ports (17) on its surface. Each inner slot (2) is fixedly connected to multiple positioning posts (18). Each positioning post (18) is fixedly connected to a nitrile rubber elastic filling layer (19). Each positioning post (18) is inserted into the corresponding positioning port (17).

4. The clamping structure for turbine teeth according to claim 1, characterized in that, Each of the high-strength support blocks (6) includes a T-shaped end (20), one end of which is fixedly connected to an arc-shaped segment (21), and both ends of the arc-shaped segment (21) are fixedly connected to multiple reinforcing support teeth (22).

5. A clamping structure for turbine teeth according to claim 1, characterized in that, Each of the high-strength support blocks (6) has a silicone rubber composite soft protective layer (23) fixedly connected to its outer surface, and the inner wall of the inner slot (2) is provided with a polytetrafluoroethylene modified coating.

6. A clamping structure for turbine teeth according to claim 3, characterized in that, The cavity of the positioning post (18) is fixedly connected with a cross-shaped reinforcing rib (24). The outer surface of the annular baffle (5) is provided with a ceramic-based composite coating with a coating thickness of 50-80μm. The inner surface of the annular baffle (5) is provided with a graphene-modified epoxy resin coating with a coating thickness of 15-25μm.

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