Combined chain wheel with chain wheel pieces convenient to replace
By combining the sprocket design with the innovative connection method of the fan-shaped plates, mounting rings and locking mechanism, the sprocket plates can be quickly replaced, solving the problem of difficult maintenance of traditional sprockets and reducing enterprise maintenance costs and downtime.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional sprockets are difficult to repair and replace due to wear or breakage, requiring specialized tools and high skills, which is time-consuming and increases enterprise maintenance costs and downtime.
The design employs a combined sprocket, which allows for quick disassembly and replacement of the sprocket segments through the use of sector segments, mounting rings, fixing rings, and locking mechanisms. Individual replacement of the sector segments is achieved using the mating blocks and pin slots.
It simplifies the sprocket replacement process, reduces parts procurement costs, shortens maintenance time, and ensures production continuity and work efficiency.
Smart Images

Figure CN224120629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sprocket technology, specifically a combination sprocket that facilitates the replacement of sprocket segments. Background Technology
[0002] In the field of mechanical transmission, sprockets are used as key components in various mechanical equipment, such as industrial production lines, logistics conveying equipment, agricultural machinery, and transportation vehicles such as motorcycles. Traditional sprockets usually adopt an integral structure design, that is, the sprocket plate and the hub are molded as one piece. During long-term use, the sprocket plate is prone to wear, breakage and other damage due to frequent chain meshing, friction and complex working environment.
[0003] Once the sprocket of a traditional sprocket is damaged, repair or replacement faces numerous challenges. On the one hand, due to its overall structural characteristics, repair personnel have to disassemble the entire sprocket. This process often requires specialized disassembly tools, and the operation is cumbersome and time-consuming. For example, in large industrial equipment, disassembling a single sprocket may take several hours or even days, which greatly affects the equipment's uptime. On the other hand, such complex disassembly and replacement operations require highly skilled and experienced repair personnel, which is difficult for ordinary repair personnel to handle. Enterprises need to rely on highly skilled professional repair personnel, which undoubtedly increases labor costs. At the same time, replacing the entire sprocket also requires purchasing a brand new complete sprocket, further increasing the company's equipment maintenance costs.
[0004] Against this backdrop, in order to overcome the many shortcomings of traditional sprockets in terms of maintenance, replacement, and compatibility, it is urgent to develop a combination sprocket that facilitates the replacement of sprocket plates. This fundamentally changes the way sprockets are maintained and used, bringing new solutions to the field of mechanical transmission. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a combined sprocket that facilitates the replacement of sprocket segments, thus solving the aforementioned problems.
[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a combination sprocket for easy replacement of sprocket plates, comprising fan-shaped plates, wherein the fan-shaped plates are configured as four pieces, and a plurality of mounting rings are arranged and connected on the outer end surface of the fan-shaped plates respectively, a fixing ring one is attached to the two side surfaces of the fan-shaped plates respectively, and mounting rings and fixing rings two are respectively installed on the inner side surface of the fan-shaped plates.
[0007] Preferably, each of the four fan-shaped pieces has a plurality of limiting holes evenly arranged on its surface, and an installation groove is formed on the inner surface of each fan-shaped piece, with a plurality of installation holes evenly arranged in the center of the surface of each installation groove.
[0008] Preferably, each of the four sector-shaped pieces has a mating block installed on one side surface and a pin groove opened on the other side surface. The outer ends of the four sector-shaped pieces are alternately arranged, and the mating blocks are respectively fitted into the pin grooves.
[0009] Preferably, each of the two fixing rings has a plurality of mounting holes 2 evenly arranged on its surface. The mounting holes 2 are respectively set to correspond to the limiting holes opened on the surface of the fan-shaped piece. Locking bolts are fitted into the interior of each mounting hole 2.
[0010] Preferably, an installation ring and a fixing ring are placed inside the two sides of the installation groove, respectively. A plurality of through holes are evenly arranged on the surface of the installation ring, and the through holes are respectively set to correspond to the installation holes opened in the installation groove.
[0011] Preferably, a plurality of fixing rods are arranged and connected on the inner surface of the second fixing ring. The outer ends of the fixing rods are sequentially sleeved inside a plurality of mounting holes and inside the through holes opened in the mounting ring, extending to the upper end of the mounting ring. Locking nuts are threaded onto the top ends of the fixing rods respectively.
[0012] Compared with the prior art, this utility model provides a combined sprocket that facilitates the replacement of sprocket segments, and has the following beneficial effects:
[0013] When a single sector sprocket malfunctions, it can be removed and replaced individually following specific steps. For example, in industrial production lines, frequently used sprockets require significant investment in new sprockets each time they are replaced using a traditional design. However, with this combination sprocket, only a single sector sprocket needs to be replaced, greatly reducing the cost of parts procurement. In the long run, this can save companies considerable maintenance expenses.
[0014] When it is necessary to replace the sprocket, maintenance personnel can quickly replace a single sector sprocket in a short time according to the established procedure. Compared with the hours or even days required for traditional sprocket replacement, this combination sprocket can shorten downtime for maintenance to tens of minutes, effectively ensuring the continuity of production operations and greatly improving overall work efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the fan-shaped sheet structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the mounting ring structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the fixing ring structure of this utility model.
[0019] In the diagram: 1. Sector-shaped plate; 2. Sprocket tooth; 3. Fixing ring one; 4. Mounting ring; 5. Connecting block; 6. Pin groove; 7. Limiting hole; 8. Mounting groove; 9. Mounting hole one; 10. Fixing ring two; 11. Fixing rod; 12. Locking nut; 13. Mounting hole two; 14. Locking bolt. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 A combination sprocket for easy replacement of sprocket pieces includes a fan-shaped piece 1, which is configured as four pieces. Several mounting rings 4 are arranged and connected on the outer end surface of the fan-shaped piece 1. Fixing ring 1 3 is attached to both sides of the fan-shaped piece 1. Mounting ring 4 and fixing ring 2 10 are installed on the inner side surface of the fan-shaped piece 1.
[0022] Furthermore, several limiting holes 7 are evenly arranged on the surface of the four fan-shaped pieces 1, and mounting grooves 8 are respectively opened on the inner surface of the fan-shaped pieces 1. Several mounting holes 9 are evenly arranged in the center of the surface of the mounting grooves 8.
[0023] Furthermore, each of the four sector-shaped pieces 1 has a mating block 5 installed on one side surface and a pin groove 6 opened on the other side surface. The outer ends of the four sector-shaped pieces 1 are alternately arranged, and the mating blocks 5 are respectively fitted into the inside of the pin groove 6.
[0024] Furthermore, several mounting holes 13 are evenly arranged on the surfaces of the two fixing rings 1 and 2. The mounting holes 13 are respectively set to correspond to the limiting holes 7 opened on the surface of the fan-shaped piece 1. Locking bolts 14 are correspondingly sleeved inside the mounting holes 13.
[0025] Furthermore, mounting rings 4 and fixing rings 10 are placed inside the two sides of the mounting groove 8, respectively. Several through holes are evenly arranged on the surface of the mounting ring 4, and the through holes are respectively set to correspond to the mounting holes 9 opened in the mounting groove 8.
[0026] Furthermore, a number of fixing rods 11 are arranged and connected on the inner surface of the fixing ring 10. The outer ends of the fixing rods 11 are sequentially sleeved inside the interior of a number of mounting holes 9 and the through holes opened in the mounting ring 4, extending to the upper end of the mounting ring 4. Locking nuts 12 are threaded onto the top of the fixing rods 11 respectively.
[0027] Sector 1: Four sector sprockets are provided. Several mounting rings 4 are arranged and connected to the outer surface of each sector sprocket 1, providing a basic connection point for the sprocket to other components. Fixing ring 1 3 is attached to both sides of each sector sprocket 1, and mounting ring 4 and fixing ring 2 10 are installed on the inner surface. These connections achieve a stable connection with other structural components. Each sector sprocket 1 has a mating block 5 on one side and a pin groove 6 on the other side. The outer ends of the four sector sprockets 1 are alternately arranged, with the mating block 5 correspondingly fitted into the pin groove 6, forming a complete sprocket shape. This not only enables the sprocket function but also allows for the individual replacement of damaged sector sprockets 1.
[0028] Sprocket teeth 2: Distributed on the outer surface of the fan-shaped plate 1, the sprocket teeth 2 mesh with the chain and transmit power to other components. Their shape, size and distribution need to be designed according to the actual transmission requirements to ensure stable chain engagement and power transmission.
[0029] Fixed ring 1, 3: There are two in total, which are respectively attached to the two sides of the fan-shaped plate 1. Several mounting holes 2, 13 are evenly arranged on the surface, corresponding to the limiting holes 7 opened on the surface of the fan-shaped plate 1. By fitting locking bolts 14 into the mounting holes 2, 13, the fan-shaped plate 1 is tightly fixed to prevent it from shifting or shaking on both sides during the operation of the sprocket, thus ensuring the overall stability of the sprocket.
[0030] Mounting rings 4 are distributed on the outer and inner surfaces of the sector-shaped plate 1. The mounting rings 4 on the outer surface are used to connect other related components, while the mounting rings 4 on the inner surface are installed on one side of the mounting groove 8 of the sector-shaped plate 1. Several through holes are evenly arranged on its surface, corresponding to the mounting holes 9 in the mounting groove 8. A fixing rod 11 passes through the mounting holes 9 and the through holes in sequence, and a locking nut 12 is threaded onto the top of the fixing rod 11, achieving a tight connection with the sector-shaped plate 1 and the fixing rings 10, providing inner support for the sprocket.
[0031] Connecting block 5: Installed on one side surface of each sector 1, its shape and size precisely match the pin slot 6 of the adjacent sector 1. By connecting with the pin slot 6, the four sector 1s are spliced together, ensuring the integrity of the overall shape of the sprocket, while providing a convenient connection method for the quick disassembly and installation of the sector 1s.
[0032] Pin slot 6: Formed on the opposite surface of each sector 1, used in conjunction with mating block 5. When replacing sector 1, simply disconnect the mating block 5 from the pin slot 6 to remove the individual sector 1 from the overall sprocket structure, which is convenient and quick.
[0033] Limiting holes 7: evenly distributed on the surface of the sector-shaped piece 1, corresponding to the mounting holes 13 on the surface of the fixing ring 3. By passing the locking bolts 14 through the limiting holes 7 and mounting holes 13, the sector-shaped piece 1 and the fixing ring 3 are precisely positioned and fastened, ensuring the accuracy of the relative positions of the components of the sprocket during operation.
[0034] Mounting groove 8: Formed on the inner surface of the sector-shaped piece 1, it is used to install the mounting ring 4 and the fixing ring 10. The design of mounting groove 8 provides mounting positions for other components, ensuring the installation accuracy and stability between the components, thereby ensuring the overall structural strength and transmission performance of the sprocket.
[0035] Mounting Hole 1 9: Located in the center of the surface of the mounting groove 8, evenly arranged, corresponding to the through hole on the surface of the mounting ring 4, used for the passage of the fixing rod 11. The mounting ring 4, fixing ring 2 10 and the sector piece 1 are tightly connected together by the fixing rod 11 and the locking nut 12 to form a stable inner support structure.
[0036] Fixed ring 2 10: Installed on the other side of the mounting groove 8 on the inner surface of the sector plate 1. Several fixed rods 11 are arranged and connected on the inner surface. The fixed rods 11 pass through the mounting hole 1 9 and the through hole of the mounting ring 4 in sequence, and extend to the upper end of the mounting ring 4. By threading a locking nut 12 onto the top of the fixed rod 11, the fixed ring 2 10, the mounting ring 4 and the sector plate 1 are tightly connected, which enhances the structural stability of the inner side of the sprocket.
[0037] Fixed rod 11: A key component connecting the second fixed ring 10, the sector piece 1, and the mounting ring 4. One end is connected to the inner surface of the second fixed ring 10, and the other end passes through the mounting hole 9 and the through hole of the mounting ring 4 in sequence, extending to the upper end of the mounting ring 4. It is fixed by the locking nut 12 to ensure that the connection between the components is firm, and together they form the inner support and connection structure of the sprocket.
[0038] Locking nut 12: Threaded onto the top of the fixing rod 11, used to fasten the fixing rod 11, ensuring a tight fit between the fixing ring 10, the mounting ring 4, and the sector-shaped piece 1. When replacing the sector-shaped piece 1, simply unscrewing the locking nut 12 will disconnect the components, making the operation simple and convenient.
[0039] Mounting holes 2 13: evenly distributed on the surface of the fixing ring 1 3, corresponding to the limiting holes 7 on the surface of the sector plate 1. By cooperating with the mounting holes 2 13 and the limiting holes 7, the fixing ring 1 3 and the sector plate 1 are tightly fixed with locking bolts 14 to ensure the stability of both sides of the sector plate 1 when the sprocket is running.
[0040] Locking bolt 14: Passes through mounting hole 13 on the surface of fixed ring 3 and limiting hole 7 on the surface of sector plate 1, tightly connecting fixed ring 3 and sector plate 1 together. During the operation of the sprocket, locking bolt 14 prevents sector plate 1 from shifting and shaking, ensuring the overall stability of the sprocket structure.
[0041] Instructions for use
[0042] Each sector 1 has a mating block 5 mounted on one side and a pin groove 6 on the other side. The four sector 1s are arranged alternately at their outer ends, and the mating blocks 5 can be respectively fitted into the pin grooves 6, so that the four sector 1s are spliced into a complete sprocket shape. This connection method ensures the stability of the overall shape of the sprocket and lays the foundation for subsequent power transmission. Fixing rings 1-3 are attached to both sides of the sector 1. Several mounting holes 2-13 are evenly arranged on the surface of the two fixing rings 1-3. These mounting holes 2-13 correspond to the limiting holes 7 on the surface of the sector 1. By fitting locking bolts 14 into the mounting holes 2-13, the fixing rings 1-3 and the sector 1-3 are fixed together. The sector-shaped segments 1 are tightly fixed together, ensuring the stability of both sides of the sector-shaped segments 1 during the operation of the sprocket and preventing displacement or shaking. On the inner surface of the sector-shaped segments 1, both an installation ring 4 and a fixing ring 2 10 are installed. An installation groove 8 is formed on the inner surface of the sector-shaped segments 1. The installation ring 4 and the fixing ring 2 10 are respectively installed on both sides of the surface of the installation groove 8. Several through holes are evenly arranged on the surface of the installation ring 4, corresponding to the installation holes 1 9 in the installation groove 8. Several fixing rods 11 are arranged and connected on the inner surface of the fixing ring 2 10. The outer ends of the fixing rods 11 are sequentially sleeved inside the installation holes 1 9 and the through holes in the installation ring 4. The internal structure extends to the upper end of the mounting ring 4, and finally a locking nut 12 is threaded onto the top of the fixing rod 11. This connection method tightly connects the mounting ring 4, the fixing ring 2 10, and the sector plate 1 into one unit, forming the inner support and connection structure of the sprocket. When the sprocket plate needs to be replaced, firstly, loosen the locking bolt 14 connecting the fixing ring 1 3 and the sector plate 1 to separate the fixing ring 1 3 from the sector plate 1. Then, unscrew the locking nut 12 at the top of the fixing rod 11 and pull the fixing rod 11 out of the mounting hole 9 and the through hole of the mounting ring 4. At this time, the connection between the mounting ring 4 and the fixing ring 2 10 and the sector plate 1 is released. Because the sector plates 1 are connected by the mutual support of the fixing ring 11, the sprocket plate 1 can be closed. Connecting block 5 and pin slot 6, after disconnecting the above connection, the individual sector piece 1 can be removed from the overall sprocket structure. When replacing the new sector piece 1, the installation is carried out in reverse order. First, the new sector piece 1 is connected to the pin slot 6 of the adjacent sector piece 1 through connecting block 5. Then, the second fixing ring 10 is installed, so that the fixing rod 11 passes through the through hole of mounting hole 9 and mounting ring 4 in sequence. Then, the locking nut 12 is tightened. Finally, the first fixing ring 3 is installed and fixed to the sector piece 1 by locking bolt 14. This design avoids the complexity of replacing the entire sprocket in the traditional way. Only the damaged or adjusted individual sector piece 1 needs to be replaced, which greatly improves the efficiency of replacing sprocket pieces.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A combination sprocket for easy replacement of sprocket segments, comprising sector-shaped segments (1), characterized in that: The fan-shaped piece (1) is configured as four pieces. Several mounting rings (4) are arranged and connected on the outer end surface of the fan-shaped piece (1). Fixing ring one (3) is attached to both sides of the fan-shaped piece (1). Mounting ring (4) and fixing ring two (10) are installed on the inner side surface of the fan-shaped piece (1).
2. The combined sprocket for easy replacement of sprocket plates according to claim 1, characterized in that: The four fan-shaped pieces (1) are provided with a number of limiting holes (7) evenly arranged on their surfaces. The inner surface of the fan-shaped pieces (1) is provided with a mounting groove (8), and the center of the mounting groove (8) is provided with a number of mounting holes (9) evenly arranged.
3. The combined sprocket for easy replacement of sprocket plates according to claim 2, characterized in that: Each of the four fan-shaped pieces (1) has a mating block (5) installed on one side surface and a pin groove (6) opened on the other side surface. The outer ends of the four fan-shaped pieces (1) are alternately arranged, and the mating block (5) is respectively fitted into the inside of the pin groove (6).
4. The combined sprocket for easy replacement of sprocket plates according to claim 1, characterized in that: The two fixed rings (3) are evenly arranged with a number of mounting holes (13). The mounting holes (13) are respectively set to correspond to the limiting holes (7) opened on the surface of the fan-shaped piece (1). Locking bolts (14) are fitted inside the mounting holes (13).
5. A combined sprocket for easy replacement of sprocket plates according to claim 2, characterized in that: The mounting groove (8) has mounting rings (4) and fixing rings (10) placed inside its two sides respectively. Several through holes are evenly arranged on the surface of the mounting ring (4), and the through holes are respectively set to correspond to the mounting holes (9) opened in the mounting groove (8).
6. A combination sprocket for easy replacement of sprocket plates according to claim 5, characterized in that: The inner surface of the second fixing ring (10) is connected with several fixing rods (11). The outer ends of the fixing rods (11) are sequentially sleeved inside several mounting holes (9) and inside the through holes opened in the mounting ring (4), extending to the upper end of the mounting ring (4). Locking nuts (12) are threaded onto the top of the fixing rods (11).