Combined chain wheel

Abstract

The utility model relates to the technical field of chain wheels, in particular to a combined type chain wheel which comprises a shaft sleeve, a plurality of sets of fan-shaped splicing discs are arranged on the outer wall of the shaft sleeve, and limiting mechanisms are arranged outside the fan-shaped splicing discs. The chain wheel is arranged in a mode that the multiple groups of fan-shaped splicing discs are spliced, so that the problem that some undamaged parts in the chain wheel need to be replaced due to the fact that the whole chain wheel needs to be replaced when part of wheel teeth of the chain wheel are seriously abraded and need to be replaced because most existing chain wheels are integrally manufactured is avoided; the problem that part of materials of the chain wheel are wasted due to the fact that the fan-shaped splicing discs are arranged on the surfaces of the two sides of the disc formed by splicing the fan-shaped splicing discs is solved, and the fan-shaped splicing discs can be limited by pressing the pressing rings to surround the locking blocks, so that the splicing stability of the fan-shaped splicing discs is kept.

Description

Technical Field

[0001] This utility model relates to the field of sprocket technology, specifically a combined sprocket. Background Technology

[0002] A sprocket is a wheel with interlocking teeth used to mesh with precisely pitched blocks on chain links or cables. It is widely used in mechanical transmissions in industries such as chemical, textile machinery, and agricultural machinery. Most existing sprockets are manufactured as a single piece. When some teeth on a sprocket wear out and need replacement, the entire sprocket must be replaced, which increases maintenance costs and wastes resources.

[0003] Existing technology, such as publication number CN219755270U, ​​provides a combined sprocket, relating to the field of sprocket technology. Specifically, it includes a rotating shaft, a bushing coaxially arranged around the rotating shaft, an annular seat coaxially fixedly connected to the outer surface of the bushing, a sprocket body outside the annular seat, and the sprocket body composed of two or more sector-shaped plates joined together. Each sector-shaped plate has multiple sprocket teeth at its top, equidistantly distributed along the edge of the sector-shaped plate, with the bottom of the sprocket teeth connected to the sector-shaped plate. Spacer blocks are provided on both sides of each sector-shaped plate, with the bottom ends of the spacer blocks connected to the annular seat. First wedge-shaped bosses are provided on both sides of the bottom end of each sector-shaped plate, and fixed discs are provided on both sides of the annular seat. A second wedge-shaped boss corresponding to the first wedge-shaped boss is provided on the inner wall of the fixed disc.

[0004] In the current design, fastening bolts are used to assemble the fixed disc and the annular seat assembly. The second wedge-shaped boss drives the first wedge-shaped boss to press towards the center of the annular seat, limiting the radial displacement of the sector-shaped pieces. However, in reality, the force on the sprocket is constantly changing during transmission, and sprockets are typically used in transmission mechanisms with high loads. The second wedge-shaped boss, which limits the movement of the first wedge-shaped boss by pressing it with an inclined plane, causes the fastening bolts to be subjected to compressive force moving outwards from the bolt hole during sprocket transmission, potentially leading to loosening or detachment of the fastening bolts. Therefore, we propose a combined sprocket design. Utility Model Content

[0005] The purpose of this invention is to provide a modular sprocket, which solves the problem that most existing sprockets are manufactured as a single piece, and when a part of the sprocket teeth are severely worn and need to be replaced, the entire sprocket needs to be replaced, which increases maintenance costs to some extent.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A combined sprocket includes a bushing, the outer wall of which is provided with multiple sets of fan-shaped splicing discs, and the fan-shaped splicing discs are provided with a limit mechanism on the outside.

[0008] The limiting mechanism includes two sets of pressure rings, which are disposed on the surfaces on both sides. Locking blocks are fixedly connected to the positions of the fan-shaped splicing plate inside the pressure rings. The side of the pressure ring corresponding to the locking block is set with an inclined surface, and the inner wall of the pressure ring is in contact with the locking block.

[0009] Preferably, the pressure ring and the sector-shaped splicing plate are provided with connection holes at corresponding positions, and the pressure ring and the sector-shaped splicing plate are connected by inserting bolts into the connection holes.

[0010] Preferably, the pressure ring has a retaining ring on the surface of the corresponding sector-shaped splicing disk, and the surface of the sector-shaped splicing disk has an annular retaining groove for engaging the retaining ring.

[0011] Preferably, multiple positioning rods are fixedly connected to the outer wall of the bushing, and the positioning rods are inserted into the inner wall of the positioning groove opened on the splicing surface of the fan-shaped splicing plate.

[0012] Preferably, the edges of the positioning rod contour are rounded, and the arc surface of the fan-shaped splicing plate is fixedly connected with teeth for cooperating with chain drive.

[0013] Preferably, the number of the fan-shaped splicing disks is six sets, which are used to splice them to form a disc, and the contact surfaces of the fan-shaped splicing disks with the bushing and the pressure ring are tightly fitted.

[0014] Preferably, the edge of the positioning rod surface contour is rounded, and the inner hole of the bushing is hexagonal for assembly with the rotating shaft.

[0015] By employing the above technical solution, this utility model provides a combined sprocket. It possesses at least the following features:

[0016] Beneficial effects:

[0017] I. This utility model avoids the problem of replacing the entire sprocket when some teeth are severely worn and need replacement, as existing sprockets are mostly manufactured as a single piece. This results in the replacement of undamaged parts of the sprocket, leading to material waste. Furthermore, by setting pressure rings on both sides of the disc formed by the splicing of the fan-shaped splicing discs, the pressure rings can be pressed around the outside of the locking block to limit the movement of the fan-shaped splicing discs and maintain their stability. Bolts are inserted into the connecting holes to fix the pressure rings to the surface of the fan-shaped splicing discs, forming a cooperative limiting effect. This makes the fan-shaped splicing disc structure sufficiently stable, thus avoiding the situation in the comparative solution where the second wedge-shaped boss drives the first wedge-shaped boss to squeeze towards the center of the annular seat, which may cause damage to the connecting parts of the sprocket during the sprocket transmission process.

[0018] Second, this utility model limits the position of the sector-shaped splicing disk on the bushing by setting a positioning rod on the outer wall of the bushing, which can be inserted into the positioning groove between the splicing surfaces of the sector-shaped splicing disk, thus preventing radial or axial displacement and ensuring the stability of the output power of the rotating shaft when inserted into the bushing. Furthermore, the annular groove on the surface of the sector-shaped splicing disk, through the snap ring connected to the pressure ring, can further improve the stability of the sector-shaped splicing disk splicing into a disc. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the bushing of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sector-shaped splicing disk in this utility model;

[0024] Figure 5 This is a schematic diagram of the pressure ring structure of this utility model.

[0025] In the diagram: 1. Bushing; 11. Positioning rod; 2. Sector-shaped splicing plate; 21. Tooth; 22. Locking block; 23. Annular groove; 24. Positioning groove; 3. Pressure ring; 31. Bolt; 311. Connecting hole; 32. Snap ring. Detailed Implementation

[0026] 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.

[0027] A type of composite sprocket, such as Figure 1 - Figure 5 As shown, the device includes a bushing 1. The outer wall of the bushing 1 is provided with multiple sets of fan-shaped splicing discs 2. The fan-shaped splicing discs 2 are provided with a limiting mechanism. The limiting mechanism includes two sets of pressure rings 3. The two sets of pressure rings 3 are provided on the surfaces on both sides. Locking blocks 22 are fixedly connected to the positions of the fan-shaped splicing discs 2 inside the pressure rings 3. The side of the pressure rings 3 corresponding to the locking blocks 22 is set with an inclined surface. The inner wall of the pressure rings 3 is in contact with the locking blocks 22. Connection holes 311 are opened at the positions of the pressure rings 3 and the fan-shaped splicing discs 2. The pressure rings 3 and the fan-shaped splicing discs 2 are connected by inserting bolts 31 into the connection holes 311.

[0028] In this embodiment, by configuring the sprocket as a series of fan-shaped splicing discs 2, the problem of replacing the entire sprocket when a part of the teeth of the existing sprocket is severely worn and needs to be replaced is avoided, as most sprockets are manufactured as a single piece. This results in the replacement of some undamaged parts of the sprocket, leading to a waste of some sprocket materials. Furthermore, by setting pressure rings 3 on the surfaces of both sides of the disc formed by splicing the fan-shaped splicing discs 2, the pressure rings 3 can be pressed around the outside of the locking block 22 to limit the movement of the fan-shaped splicing discs 2, thereby maintaining the stability of the splicing of the fan-shaped splicing discs 2. The pressure rings 3 are fixed to the surface of the fan-shaped splicing discs 2 by inserting bolts 31 into the connecting holes 311, forming a cooperative limiting effect, making the structure of the fan-shaped splicing discs 2 sufficiently stable.

[0029] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, preferably, the pressure ring 3 has a retaining ring 32 on the surface of the fan-shaped splicing plate 2, and the surface of the fan-shaped splicing plate 2 has an annular retaining groove 23 for retaining the retaining ring 32. Multiple positioning rods 11 are fixedly connected to the outer wall of the bushing 1, and the positioning rods 11 are inserted into the inner wall of the positioning groove 24 opened on the splicing surface of the fan-shaped splicing plate 2.

[0030] Specifically, by setting a positioning rod 11 on the outer wall of the bushing 1, which can be inserted into the positioning groove 24 between the splicing surfaces of the fan-shaped splicing disk 2, the position of the fan-shaped splicing disk 2 on the bushing 1 can be limited to prevent radial or axial displacement, so as to ensure the stability of the output power of the shaft when inserted into the bushing 1. Furthermore, by setting an annular groove 23 on the surface of the fan-shaped splicing disk 2 and connecting a retaining ring 32 on the retaining ring 3, the stability of the fan-shaped splicing disk 2 splicing into a disc can be further improved.

[0031] like Figure 3 , Figure 4 As shown, preferably, the edges of the positioning rod 11 are rounded, the arc surface of the fan-shaped splicing plate 2 is fixedly connected with teeth 21 for cooperating with chain drive, the number of fan-shaped splicing plates 2 is six sets, which are used to splice to form a disc, and the contact surface of the fan-shaped splicing plate 2 spliced ​​with the bushing 1 and the pressure ring 3 is tightly fitted, the position of the edge of the positioning rod 11 surface contour is rounded, and the inner hole of the bushing 1 is hexagonal for cooperating with the rotating shaft for assembly.

[0032] This utility model discloses a modular sprocket. By assembling the sprocket into multiple sets of fan-shaped interlocking discs 2, it avoids the problem of replacing the entire sprocket when some teeth are severely worn and require replacement, as most existing sprockets are manufactured as a single piece. This results in the replacement of undamaged parts of the sprocket, leading to material waste. Furthermore, by placing pressure rings 3 on both sides of the discs formed by the fan-shaped interlocking discs 2, the pressure rings 3 can be pressed around the locking block 22 to limit the movement of the fan-shaped interlocking discs 2, maintaining the stability of the assembly. Bolts 31 are inserted into the connecting holes 311 to fix the pressure rings 3 to the surface of the fan-shaped interlocking discs 2, forming a synergistic effect. The limiting mechanism ensures sufficient stability of the sector-shaped splicing disk 2 structure, thus avoiding the situation in the comparative scheme where the second wedge-shaped boss drives the first wedge-shaped boss to squeeze towards the center of the annular seat, which may cause damage to the connecting parts of the sprocket during the sprocket transmission process. By setting a positioning rod 11 on the outer wall of the bushing 1, which can be inserted into the positioning groove 24 between the splicing surfaces of the sector-shaped splicing disk 2, the position of the sector-shaped splicing disk 2 on the bushing 1 can be limited to prevent radial or axial displacement, thereby ensuring the stability of the output power of the rotating shaft when inserted into the bushing 1. Furthermore, by opening an annular groove 23 on the surface of the sector-shaped splicing disk 2 and connecting the retaining ring 32 on the pressure ring 3, the stability of the sector-shaped splicing disk 2 splicing into a disc can be further improved.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] 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 combined sprocket, comprising a bushing (1), characterized in that: The outer wall of the bushing (1) is provided with multiple sets of fan-shaped splicing disks (2), and the fan-shaped splicing disks (2) are provided with a limit mechanism on the outside; The limiting mechanism includes two sets of pressure rings (3). The two sets of pressure rings (3) are arranged on the surfaces on both sides. Locking blocks (22) are fixedly connected to the positions of the fan-shaped splicing plate (2) inside the pressure rings (3). The pressure rings (3) and the locking blocks (22) are both set with inclined surfaces, and the inner wall of the pressure rings (3) is in contact with the locking blocks (22).

2. The combined sprocket according to claim 1, characterized in that: The pressure ring (3) and the fan-shaped splicing plate (2) are respectively provided with connection holes (311). The pressure ring (3) and the fan-shaped splicing plate (2) are connected by inserting bolts (31) into the connection holes (311).

3. A combined sprocket according to claim 2, characterized in that: The pressure ring (3) has a retaining ring (32) on the surface of the fan-shaped splicing plate (2), and the surface of the fan-shaped splicing plate (2) has an annular groove (23) for retaining the retaining ring (32).

4. A combined sprocket according to claim 1, characterized in that: Multiple positioning rods (11) are fixedly connected to the outer wall of the bushing (1), and the positioning rods (11) are inserted into the inner wall of the positioning groove (24) opened on the splicing surface of the fan-shaped splicing plate (2).

5. A combined sprocket according to claim 4, characterized in that: The edges of the positioning rod (11) are rounded, and the arc surface of the fan-shaped splicing plate (2) is fixedly connected with teeth (21) for use with chain drive.

6. A combined sprocket according to claim 3, characterized in that: The number of the fan-shaped splicing disks (2) is six, which are used to splice them to form a disk, and the contact surfaces of the fan-shaped splicing disks (2) with the bushing (1) and the pressure ring (3) are closely fitted.

7. A combined sprocket according to claim 4, characterized in that: The positioning rod (11) has a rounded edge on its surface contour, and the bushing (1) has a hexagonal inner hole for assembly with the rotating shaft.

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