Wear-resistant duplex helical gear

Abstract

The utility model discloses a wear-resistant duplex helical gear which comprises a helical gear I and a helical gear II, the helical gear I and the helical gear II respectively comprise a gear disc and a gear ring layer which are integrally formed, and the gear discs and the gear ring layers adopt an integrally formed structure, so that the overall structural strength and stability can be ensured, and actual processing and forming are also facilitated; the gear ring layer is arranged on the outer side wall of the gear disc; a first connecting sleeve is arranged on a gear disc of the first bevel gear, the first connecting sleeve is sleeved with the second bevel gear in a matched mode, and the second bevel gear is detachably fixed to the first connecting sleeve through a connecting piece. The gear box is ingenious and reasonable in structural design, the first bevel gear and the second bevel gear are designed to be detachably installed, inspection and maintenance are facilitated, when one gear goes wrong, only the gear going wrong needs to be replaced, the whole gear does not need to be replaced, the follow-up maintenance cost is reduced, and the service life of the gear box is prolonged. And due to the detachable design, different transmission requirements can be met by replacing gears of different models, the flexibility is enhanced, and the application range is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of gears, and particularly relates to a wear-resistant double helical gear. Background Art

[0002] A double gear is two gears integrated together. This double gear is called a sliding gear in a gear train (transmission). Its function is to change the rotational speed or speed of the output shaft. In existing double gears, the two gears are generally fixed together by welding. For example, an existing patent document discloses a welded double gear structure (Publication No.: CN220770073U). Although welding fixation ensures the connection strength, when one of the gears has a problem, the whole needs to be disassembled and replaced, increasing the subsequent maintenance cost. Summary of the Invention

[0003] The purpose of the utility model is to provide a technical solution for a wear-resistant double helical gear aiming at the deficiencies of the existing technology. The structure is ingeniously and reasonably designed, and has strong practicability. The installation method between the first helical gear and the second helical gear is designed to be detachable, which is convenient for inspection and maintenance. When one of the gears has a problem, only the problematic gear needs to be replaced, without the need for overall replacement, reducing the subsequent maintenance cost. Moreover, the detachable design can meet different transmission requirements by replacing gears of different models, enhancing flexibility and expanding the scope of application.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A wear-resistant double helical gear, comprising a first helical gear and a second helical gear. Both the first helical gear and the second helical gear include an integrally formed gear disk and a tooth layer. The gear disk and the tooth layer adopt an integrally formed structure, which can ensure the overall structural strength and stability, and is also convenient for actual processing and forming. The tooth layer is arranged on the outer side wall of the gear disk. A first connecting sleeve is provided on the gear disk of the first helical gear, and the second helical gear is correspondingly sleeved on the first connecting sleeve, and the second helical gear is detachably fixed to the first connecting sleeve through a connecting member. In this application, the installation method between the first helical gear and the second helical gear is designed to be detachable, which is convenient for inspection and maintenance. When one of the gears has a problem, only the problematic gear needs to be replaced, without the need for overall replacement, reducing the subsequent maintenance cost. Moreover, the detachable design can meet different transmission requirements by replacing gears of different models, enhancing flexibility and expanding the scope of application.

[0006] Further, a central through hole is provided through the center of the gear disk of the first helical gear, and a keyway is provided on the central through hole. The central through hole can facilitate the connection between the whole double helical gear and the transmission shaft, and the keyway can facilitate the positioning and fixation between the double helical gear and the transmission shaft, ensuring the connection reliability and firmness. The design is reasonable and convenient for actual assembly and disassembly.

[0007] Furthermore, the gear disc of the first helical gear is provided with weight-reducing holes which are evenly distributed along the circumferential direction of the central through-hole. The structural layout is reasonable. The design of the weight-reducing holes can reduce the overall mass, lower the system energy consumption, and improve the transmission efficiency. At the same time, the circumferential uniform distribution of the weight-reducing holes can ensure the balance and stability of the overall structure. Meanwhile, the weight-reducing holes can also increase the heat dissipation area on the surface of the helical gear, improve the heat dissipation efficiency, and extend the service life. The weight-reducing holes are preferably of an arc structure, which optimizes the structure, reduces the stress concentration phenomenon, and makes the overall appearance more beautiful.

[0008] Furthermore, wear-resistant layers are coated on the surfaces of the tooth layers of the first helical gear and the second helical gear. Coating the wear-resistant layer at the tooth layer can protect the tooth surfaces of the helical gears and extend their service life. The thickness of the wear-resistant layer is generally 0.5 - 2 mm.

[0009] Furthermore, a first limiting ring is provided on the first connecting sleeve, a second connecting sleeve is provided on the gear disc of the second helical gear, a second limiting ring is provided on the second connecting sleeve, a first connecting perforation is provided on the first limiting ring, and a second connecting perforation corresponding to the first connecting perforation is provided on the second limiting ring. The connecting piece is a bolt assembly, and the bolt assembly is matched with the first connecting perforation and the second connecting perforation. The bolt assembly penetrates through the corresponding first connecting perforation and the second connecting perforation to connect and fix the first limiting ring and the second limiting ring. The overall structural design is compact and reasonable. The first limiting ring and the second limiting ring are connected by the bolt assembly, thereby installing and fixing the second helical gear and the first helical gear. The installation and disassembly are convenient and easy for actual operation, and the connection firmness and reliability are ensured. At the same time, multiple groups of the first connecting perforation and the second connecting perforation are provided and are evenly distributed circumferentially, effectively ensuring the balance and stability of the structure. And the multiple-group design enables multiple groups of bolt assemblies to be provided, thereby effectively ensuring the connection stability and improving the overall load-bearing capacity.

[0010] Furthermore, a positioning block is provided on the first limiting ring, and a positioning groove is provided on the second limiting ring. The positioning block is snap-fitted in the positioning groove precisely. The precise snap-fitting of the positioning block and the positioning groove realizes the precise installation and positioning between the first helical gear and the second helical gear, facilitates the actual assembly process, improves the assembly efficiency, reduces the assembly error, and thus ensures the smoothness and accuracy of the transmission process.

[0011] Furthermore, reinforcing rib blocks are provided between the first limiting ring and the first connecting sleeve and between the second limiting ring and the second connecting sleeve. The design is ingenious. By means of the reinforcing rib blocks, the connection strength between the first limiting ring and the first connecting sleeve and between the second limiting ring and the second connecting sleeve is enhanced, making the overall structure more stable and reliable.

[0012] Furthermore, a first step groove is provided on the end face of the first connecting sleeve, and a second step groove is provided on the end face of the second connecting sleeve. When the second helical gear is sleeved and fixed on the first connecting sleeve, a limiting ring groove is formed by combining the first step groove and the second step groove. An intermediate ring cover is provided in the limiting ring groove. A first threaded section is provided on the outer ring wall of the limiting ring groove, and a second threaded section is provided on the inner ring wall of the limiting ring groove. A third threaded section matching the first threaded section is provided on the outer ring wall of the intermediate ring cover, and a fourth threaded section matching the second threaded section is provided on the inner ring wall of the intermediate ring cover. Through the screwing fit between the first threaded section and the third threaded section, and between the second threaded section and the fourth threaded section, the threaded screwing and fixing of the intermediate ring cover in the limiting ring groove are realized. The structural design is ingenious and reasonable. When the two helical gears are assembled and fixed, a limiting ring groove is exactly formed between the first step groove and the second step groove, and threaded sections are provided on both side walls of the limiting ring groove. The intermediate ring cover is installed in the limiting ring groove. Through the threaded sections on both side walls of the intermediate ring cover cooperating with the threaded sections on both side walls of the limiting ring groove, the threaded screwing of the intermediate ring cover in the limiting ring groove can be realized. Thus, through the indirect action of the intermediate ring cover, the two helical gears are further connected and fixed, effectively enhancing the connection stability and firmness, thereby improving the transmission stability and reliability. The installation and disassembly are convenient.

[0013] Furthermore, an arc-shaped ring groove is provided on the end face of the intermediate ring cover. The design of the arc-shaped ring groove can facilitate the rotation operation of the intermediate ring cover and facilitate the installation and disassembly of the intermediate ring cover.

[0014] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0015] The structure of the present utility model is ingeniously and reasonably designed and has strong practicability. The first helical gear and the second helical gear are designed in a detachable installation manner, which is convenient for inspection and maintenance. When one of the gears has a problem, only the problematic gear needs to be replaced, without the need for overall replacement, reducing the subsequent maintenance cost. Moreover, the detachable design can meet different transmission requirements by replacing gears of different models, enhancing flexibility and expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model with reference to the accompanying drawings:

[0017] Figure 1 is a structural schematic diagram of a wear-resistant double helical gear of the present utility model;

[0018] Figure 2 is Figure 1 a structural schematic diagram from another perspective;

[0019] Figure 3 is a state structural schematic diagram when the limiting ring groove is formed in the present utility model;

[0020] Figure 4It is a schematic structural diagram of the first helical gear in the present utility model;

[0021] Figure 5 is Figure 4 a schematic structural diagram from another perspective;

[0022] Figure 6 It is a schematic structural diagram of the second helical gear in the present utility model;

[0023] Figure 7 is Figure 6 a schematic structural diagram from another perspective;

[0024] Figure 8 It is a schematic structural diagram of the middle ring cover in the present utility model.

[0025] In the figure: 1 - the first helical gear; 2 - the second helical gear; 3 - gear disk; 4 - tooth layer; 5 - the first connecting sleeve; 6 - connecting piece; 7 - central through hole; 8 - keyway; 9 - weight-reducing hole; 10 - the first limiting ring; 11 - the second connecting sleeve; 12 - the second limiting ring; 13 - the first connecting perforation; 14 - the second connecting perforation; 15 - positioning block; 16 - positioning slot; 17 - reinforcing rib; 18 - the first step groove; 19 - the second step groove; 20 - limiting ring groove; 21 - the first thread section; 22 - the second thread section; 23 - the third thread section; 24 - the fourth thread section; 25 - arc-shaped ring groove; 26 - middle ring cover. Specific embodiments

[0026] As Figures 1 to 8 shown, a wear-resistant double helical gear of the present utility model includes the first helical gear 1 and the second helical gear 2. Both the first helical gear 1 and the second helical gear 2 include an integrally formed gear disk 3 and a tooth layer 4. The gear disk 3 and the tooth layer 4 adopt an integrally formed structure, which can ensure the overall structural strength and stability, and is also convenient for actual processing and forming. The tooth layer 4 is arranged on the outer side wall of the gear disk 3; a first connecting sleeve 5 is arranged on the gear disk 3 of the first helical gear 1. The first connecting sleeve 5 and the first helical gear 1 are of an integrally formed structure to ensure the structural strength. The second helical gear 2 is fitted and arranged on the first connecting sleeve 5, and the second helical gear 2 is detachably fixed to the first connecting sleeve 5 through a connecting piece 6. In the present application, a detachable installation method is designed between the first helical gear 1 and the second helical gear 2, which is convenient for inspection and maintenance. When one of the gears has a problem, only the problematic gear needs to be replaced, without the need for overall replacement, reducing the subsequent maintenance cost. Moreover, the detachable design can meet different transmission requirements by replacing gears of different models, enhancing flexibility and expanding the applicable range. Wear-resistant layers are coated on the surfaces of the tooth layer 4 of the first helical gear 1 and the tooth layer 4 of the second helical gear 2. Coating the wear-resistant layer at the tooth layer 4 can protect the tooth surfaces of the helical gears and extend their service life. The thickness of the wear-resistant layer is generally 0.5 - 2 mm.

[0027] The gear disk 3 of the first helical gear 1 is provided with a central through hole 7 in the center. A keyway 8 is provided on the central through hole 7. The central through hole 7 can facilitate the connection between the entire double helical gear and the transmission shaft. The keyway 8 can facilitate the positioning and fixing between the double helical gear and the transmission shaft, ensuring the connection reliability and firmness. The design is reasonable and convenient for actual assembly and disassembly.

[0028] The gear disk 3 of the first helical gear 1 is provided with weight-reducing holes 9. The weight-reducing holes 9 are evenly distributed along the circumferential direction of the central through hole 7. The structure layout is reasonable. The design of the weight-reducing holes 9 can reduce the overall mass, lower the system energy consumption, and improve the transmission efficiency. At the same time, the circumferential uniform distribution of the weight-reducing holes 9 can ensure the balance and stability of the overall structure. At the same time, the weight-reducing holes 9 can also increase the heat dissipation area on the surface of the helical gear, improve the heat dissipation efficiency, and extend the service life. The weight-reducing holes 9 are preferably arc-shaped structures, optimizing the structure, reducing the stress concentration phenomenon, and making the overall shape more beautiful.

[0029] A first limiting ring 10 is provided on the connecting sleeve 5. A second connecting sleeve 11 is provided on the gear disk 3 of the second helical gear 2. The second connecting sleeve 11 and the second helical gear 2 are of an integrally formed structure to ensure the overall structural strength. A second limiting ring 12 is provided on the second connecting sleeve 11. A first connecting through hole 13 is provided on the first limiting ring 10. A second connecting through hole 14 corresponding to the first connecting through hole 13 is provided on the second limiting ring 12. The connecting member 6 is a bolt assembly. The bolt assembly is matched with the first connecting through hole 13 and the second connecting through hole 14. The bolt assembly penetrates through the corresponding first connecting through hole 13 and the second connecting through hole 14 to connect and fix the first limiting ring 10 and the second limiting ring 12. The overall structure design is compact and reasonable. The first limiting ring 10 and the second limiting ring 12 are connected by a bolt assembly, thereby installing and fixing the second helical gear 2 and the first helical gear 1. The installation and disassembly are convenient and easy for actual operation, and the connection firmness and reliability are ensured. At the same time, multiple groups of the first connecting through hole 13 and the second connecting through hole 14 are provided and are evenly distributed in the circumferential direction, effectively ensuring the structural balance and stability. And the multiple-group design enables multiple groups of bolt assemblies to be provided, thereby effectively ensuring the connection stability and improving the overall load-bearing capacity.

[0030] A positioning block 15 is provided on the first limiting ring 10. A positioning groove 16 is provided on the second limiting ring 12. The positioning block 15 is engaged and clamped in the positioning groove 16. The positioning block 15 and the positioning groove 16 are accurately engaged and clamped to achieve the accurate installation and positioning between the first helical gear 1 and the second helical gear 2, facilitating the actual assembly process, improving the assembly efficiency, reducing the assembly error, and thus ensuring the smoothness and accuracy of the transmission process. Reinforcing rib blocks 17 are provided between the first limiting ring 10 and the connecting sleeve 5 and between the second limiting ring 12 and the second connecting sleeve 11. The design is ingenious. The connection strength between the first limiting ring 10 and the connecting sleeve 5 and between the second limiting ring 12 and the second connecting sleeve 11 is enhanced through the reinforcing rib blocks 17, making the overall structure more stable and reliable.

[0031] On the end face of the first connecting sleeve 5, there is a first step groove 18. On the end face of the second connecting sleeve 11, there is a second step groove 19. When the second helical gear 2 is sleeved and fixed on the first connecting sleeve 5, the first step groove 18 and the second step groove 19 combine to form a limiting ring groove 20. Inside the limiting ring groove 20, there is an intermediate ring cover 26. On the outer ring wall of the limiting ring groove 20, there is a first threaded section 21. On the inner ring wall of the limiting ring groove 20, there is a second threaded section 22. On the outer ring wall of the intermediate ring cover 26, there is a third threaded section 23 that matches the first threaded section 21. On the inner ring wall of the intermediate ring cover 26, there is a fourth threaded section 24 that matches the second threaded section 22. Through the screwing fit between the first threaded section 21 and the third threaded section 23, and between the second threaded section 22 and the fourth threaded section 24, the threaded screwing fixation of the intermediate ring cover 26 inside the limiting ring groove 20 is realized. The structural design is ingenious and reasonable. When the two helical gears are assembled and fixed, the first step groove 18 and the second step groove 19 just form a limiting ring groove 20, and threaded sections are provided on both side walls of the limiting ring groove 20. By installing the intermediate ring cover 26 inside the limiting ring groove 20 and matching the threaded sections on both side walls of the intermediate ring cover 26 with the threaded sections on both side walls of the limiting ring groove 20, the threaded screwing of the intermediate ring cover 26 inside the limiting ring groove 20 can be realized. Thus, through the indirect action of the intermediate ring cover 26, the two helical gears are further connected and fixed, effectively enhancing the connection stability and firmness, thereby improving the stability and reliability of transmission. The installation and disassembly are convenient. On the end face of the intermediate ring cover 26, there is an arc-shaped ring groove 25. The design of the arc-shaped ring groove 25 can facilitate the rotation operation of the intermediate ring cover 26, making it convenient for the installation and disassembly of the intermediate ring cover 26, and the design is more user-friendly.

[0032] The structural design of the present utility model is ingenious and reasonable, and it has strong practicability. The first helical gear 1 and the second helical gear 2 are designed in a detachable installation manner, which is convenient for inspection and maintenance. When one of the gears has a problem, only the problematic gear needs to be replaced, without the need for overall replacement, reducing the subsequent maintenance cost. Moreover, the detachable design can meet different transmission requirements by replacing gears of different models, enhancing flexibility and expanding the scope of application.

[0033] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present utility model to achieve basically the same technical effects are all covered by the protection scope of the present utility model.

Claims

1. A wear-resistant double helical gear, characterized in that: It comprises a helical gear 1 and a helical gear 2, wherein the helical gear 1 and the helical gear 2 each comprise an integrally formed gear plate and a gear ring layer, wherein the gear ring layer is arranged on an outer side wall of the gear plate; The gear plate of the helical gear 1 is provided with a connecting sleeve 1, the matching sleeve of the helical gear 2 is provided on the connecting sleeve 1, and the helical gear 2 is detachably fixed to the connecting sleeve 1 through a connecting piece; The connecting sleeve 1 is provided with a limiting ring 1, the gear plate of the bevel gear 2 is provided with a connecting sleeve 2, the connecting sleeve 2 is provided with a limiting ring 2, the limiting ring 1 is provided with a connecting through hole 1, the limiting ring 2 is provided with a connecting through hole 2 corresponding to the connecting through hole 1, the connecting piece is a bolt assembly, the bolt assembly matches the connecting through hole 1 and the connecting through hole 2, the bolt assembly penetrates the corresponding connecting through hole 1 and the connecting through hole 2, and connects and fixes the limiting ring 1 with the limiting ring 2.

2. The wear-resistant double helical gear according to claim 1, characterized in that: A central through hole is penetrated through the center of the gear plate of the helical gear 1, and a keyway is arranged on the central through hole.

3. The wear-resistant double helical gear according to claim 2, characterized in that: The gear plate of the helical gear 1 is provided with weight-reducing holes, and the weight-reducing holes are evenly distributed along the circumference of the central through hole.

4. The wear-resistant double helical gear according to claim 1, characterized in that: The surfaces of the gear ring layer of the helical gear 1 and the gear ring layer of the helical gear 2 are both coated with a wear-resistant layer.

5. The wear-resistant double helical gear according to claim 1, characterized in that: The first limiting ring is provided with a positioning block, the second limiting ring is provided with a positioning slot, and the positioning block is matched and snapped into the positioning slot.

6. The wear-resistant double helical gear according to claim 1, characterized in that: Reinforcement ribs are provided between the first limiting ring and the first connecting sleeve, and between the second limiting ring and the second connecting sleeve.

7. The wear-resistant double helical gear according to claim 1, characterized in that: The end surface of the connecting sleeve 1 is provided with a step groove 1, and the end surface of the connecting sleeve 2 is provided with a step groove 2. When the helical gear 2 is fixed on the connecting sleeve 1, the step groove 1 and the step groove 2 are combined to form a limiting ring groove, and an intermediate ring cover is provided in the limiting ring groove. The outer ring wall of the limiting ring groove is provided with a thread segment 1, and the inner ring wall of the limiting ring groove is provided with a thread segment 2. The outer ring wall of the intermediate ring cover is provided with a thread segment 3 matching the thread segment 1, and the inner ring wall of the intermediate ring cover is provided with a thread segment 4 matching the thread segment 2. The threaded screw connection and fixation of the intermediate ring cover in the limiting ring groove are achieved by screwing the thread segment 1 with the thread segment 3 and the thread segment 2 with the thread segment 4.

8. The wear-resistant double helical gear according to claim 7, characterized in that: An arc-shaped annular groove is arranged on the end surface of the intermediate ring cover.

Images