Combined chain wheel

Abstract

The utility model provides a combined type chain wheel, belongs to the technical field of chain wheels, and solves the problem of high maintenance cost caused by the fact that the chain wheel can only be integrally replaced after being damaged due to integral casting. The mounting rack is provided with a rotating hole, the rotating hole penetrates through the rotating rod, limiting discs are mounted on the mounting rack, fan-shaped blocks are mounted between the limiting discs, the fan-shaped blocks are provided with chain teeth, sliding blocks and sliding grooves are formed in the side faces of the fan-shaped blocks, positioning blocks are arranged outside the mounting rack, mounting grooves are formed in the positioning blocks, and springs are mounted in the mounting grooves. The fan-shaped block is provided with a positioning groove, the positioning groove is provided with a protruding block, a first limiting hole is formed in the fan-shaped block, a second limiting hole is formed in the limiting disc, the limiting rod penetrates through the first limiting hole and the second limiting hole, a clamping spring is installed on the installation frame, and the limiting disc is provided with a contact part which abuts against the clamping spring. The chain wheel has the advantages that the chain wheel main body is divided into a plurality of fan-shaped blocks, and the fan-shaped blocks are positioned through the matching of the positioning blocks and the positioning grooves and are fixed by the limiting rods; the springs and the protruding blocks are matched to pop out the fan-shaped blocks, and replacement is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprockets and relates to a sprocket, in particular to a combined sprocket. Background Art

[0002] A sprocket is a wheel with cog-like sprocket teeth that mesh with precisely spaced segments on link chains or cables. It is widely used in mechanical transmissions in industries such as chemical, textile, and agricultural machinery.

[0003] The existing sprocket is a one-piece casting. During long-term use, the sprocket may wear out or the sprocket teeth may accidentally break or be damaged. At this time, the sprocket needs to be replaced. Replacing the entire sprocket increases maintenance costs. At the same time, the replaced sprocket and related casting parts can only be scrapped, resulting in a waste of resources.

[0004] For example, a sprocket with built-in lubricating oil, with application number 202223429653.0d, includes a wheel disc, an outer gear is provided on the outer wall of the wheel disc, an inner gear is provided on the inner wall of the wheel disc, a ring body is fixed on the front end of the wheel disc, a slide groove is provided on the outer wall of the ring body, a slider is installed in the slide groove, a shell is provided at the bottom of the slider, a lubrication cavity is provided in the shell, a clamping port is provided on the slider, a ball is clamped in the clamping port, and the lubrication cavity is connected to the left side of the outer wall of the ball.

[0005] The above patent uses a slider to slide in a slide groove. When the wheel rotates, the shell is kept at the bottom due to the rotation of the wheel. The lubricating oil in the lubrication chamber adheres to the wheel through the ball bearings at the clamping mouth and is continuously applied when the wheel rotates. However, the sprocket is prone to wear and accidental damage after long-term operation, and the entire sprocket needs to be replaced. Utility Model Content

[0006] The purpose of the utility model is to address the above-mentioned problems existing in the prior art and to provide a combined sprocket with which damaged parts can be easily replaced.

[0007] The utility model can be implemented through the following technical solutions: a combined sprocket, comprising a rotating rod and a mounting frame, a rotating hole is provided in the mounting frame, the rotating hole passes through the rotating rod, a limiting disk is installed on the mounting frame, fan-shaped blocks are installed between the limiting disks, chain teeth are provided on the fan-shaped blocks, sliding grooves and sliding blocks are provided on the side surfaces of the fan-shaped blocks, a positioning block is provided on the outer wall of the mounting frame, a positioning groove is provided on the bottom of the fan-shaped block, a limiting hole 1 is provided on the fan-shaped block, a limiting hole 2 is provided on the limiting disk, and the limiting hole 1 and the limiting hole 2 pass through the limiting rod.

[0008] In the above-mentioned combined sprocket, the chain tooth end of the sector block is provided with an extended edge, the surface of the sector block is provided with a reinforcing rib, and the outer surface of the limiting plate is provided with a circumferentially extending reinforcing strip.

[0009] In the above-mentioned combined sprocket, a mounting groove is provided in the positioning block, a spring is installed in the mounting groove, and a protrusion is provided in the positioning groove, and the protrusion abuts against the spring.

[0010] In the above-mentioned combined sprocket, a fixing groove is provided on the second limiting hole, a fixing portion is provided at one end of the limiting rod, the fixing portion and the fixing groove are fixedly connected by screws, and a fixing plate is installed at the fixing groove at the other end of the limiting rod.

[0011] In the above-mentioned combined sprocket, a limiting groove is provided on the limiting rod, and a corresponding limiting block is provided on the fixing plate.

[0012] In the above-mentioned combined sprocket, an annular groove is provided on the mounting frame, a retaining spring is provided in the annular groove, and a contact portion is provided on the limiting plate, and the contact portion abuts against the retaining spring.

[0013] In the above-mentioned combined sprocket, a guide groove is provided in the contact portion, and a corresponding guide strip is provided on the mounting frame.

[0014] Compared with the existing technology, the advantages of the utility model are: the tooth part of the sprocket with the wheel disc is split into several sector-shaped blocks, which can be replaced at any time by disassembling the limit rod; a spring is installed in the positioning block on the mounting frame, and the spring can apply force to the top block to push the sector-shaped block out, making it easy to take out and replace; the limit plate is positioned by the retaining ring, making it easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the combined sprocket;

[0016] Figure 2 It is a cross-sectional view of the combined sprocket;

[0017] Figure 3 is a perspective view of a mounting frame for a modular sprocket;

[0018] Figure 4 It is a front view of the limit plate of the combined sprocket;

[0019] Figure 5 It is a three-dimensional diagram of the sector block of the combined sprocket;

[0020] Among them, 1. rotating rod; 2. mounting frame; 21. rotating hole; 22. positioning block; 221. mounting groove; 23. ring groove; 24. guide strip; 3. limiting plate; 31. limiting hole 2; 311. fixing groove; 32. reinforcing strip; 33. contact part; 331. guide groove; 4. fan-shaped block; 41. chain tooth; 42. sliding groove; 43. sliding block; 44. positioning groove; 441. protrusion; 45. limiting hole 1; 46. extension edge; 47. reinforcing rib; 5. limiting rod; 51. fixing part; 52. limiting groove; 6. spring; 7. screw; 8. fixing plate; 81. limiting block; 9. retaining spring. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figures 1 to 5 As shown, the utility model can be implemented through the following embodiments: a combined sprocket, including a rotating rod 1 and a mounting frame 2, a rotating hole 21 is opened in the mounting frame 2, the rotating hole 21 passes through the rotating rod 1, a limiting disk 3 is installed on the mounting frame 2, and sector blocks 4 are installed between the limiting disks 3, and sprockets 41 are provided on the sector blocks 4. The side of the sector blocks 4 is provided with a sliding groove 42 and a sliding block 43, a positioning block 22 is provided on the outer wall of the mounting frame 2, and a positioning groove 44 is provided at the bottom of the sector block 4, a limiting hole 1 45 is opened on the sector block 4, a limiting hole 2 31 is opened on the limiting disk 3, and the limiting hole 1 45 and the limiting hole 2 31 pass through the limiting rod 5.

[0023] The limiting plate 3 is used to limit the circumferential movement of the sector block 4 after installation, and to bear and disperse the reaction force from the chain when the sector block 4 contacts the chain, thereby preventing the sector block 4 from being deformed due to the force exceeding the limit; the setting of the sliding block 43 and the sliding groove 42 facilitates the rapid sliding of the sector block 4 into the mounting frame 2, and enables the sector blocks 4 to be linked to each other, thereby preventing the sector blocks 4 from vibrating individually and causing rapid friction between the sector blocks 4 and causing wear; the positioning block 22 and the positioning groove 44 cooperate to facilitate the rapid installation of the sector block 4 on the mounting frame 2, thereby improving the assembly and maintenance efficiency; the limiting rod 5 passes through the sector block 4 and the limiting plate 3, so that the limiting plate 3 and the sector block 4 form a whole, causing the positioning block 22 to bear the reaction force from the sector block 4, causing the positioning block 22 or the sector block 4 to be deformed and damaged.

[0024] like Figure 1 、 Figure 2 and Figure 5As shown, the ends of the sprocket teeth 41 of the sector block 4 are provided with extended edges 46, and reinforcing ribs 47 are provided on the surface of the sector block 4. The outer surface of the limit plate 3 is installed with a circumferentially extending reinforcing strip 32. The extended edges 46 are used to facilitate gripping when replacing and assembling the sector block 4, while also increasing the strength of the sprocket teeth 41; the reinforcing ribs 47 are used to increase the strength of the sector block 4, and the reinforcing strip 32 is used to strengthen the limit plate 3 and prevent deformation caused by excessive force.

[0025] like Figure 2 、 Figure 3 and Figure 5 As shown, the positioning block 22 defines a mounting groove 221, in which a spring 6 is mounted. A protrusion 441 is provided in the positioning groove 44, which abuts against the spring 6. The spring 6 in the mounting groove 221 cooperates with the protrusion 441, which compresses the spring 6 and, with the aid of the limiting rod 5, increases the friction between the limiting rod 5 and the limiting hole 1 45, preventing the limiting rod 5 from accidentally loosening. Furthermore, the spring 6 is in a compressed state. After contacting the limiting rod 5, the spring 6 pushes out the sector block 4, making it easier for maintenance personnel to replace it.

[0026] like Figure 1 and Figure 2 As shown, a fixing slot 311 is defined in the second limiting hole 31. A fixing portion 51 is provided at one end of the limiting rod 5. The fixing portion 51 and the fixing slot 311 are fixedly connected by screws 7. A fixing plate 8 is mounted in the fixing slot 311 at the other end of the limiting rod 5. The fixing slot 311 and the fixing portion 51 cooperate to position and install the limiting rod 5. The fixing slot 311 and the fixing portion 51 are fixed by screws 7 to secure the limiting rod 5. The fixing plate 8 is installed in the other fixing slot 311, ensuring uniform force at both ends of the limiting rod 5, preventing deformation of the limiting rod 5 caused by force applied to one end of the limiting rod 5, thereby increasing the service life of the limiting rod 5 and reducing maintenance frequency.

[0027] like Figure 2 As shown, the limiting rod 5 is provided with a limiting groove 52, and the fixing plate 8 is provided with a corresponding limiting block 81. The limiting groove 52 and the limiting block 81 cooperate with each other. When the limiting rod 5 is subjected to force, the limiting groove 52 transmits the force to the fixing groove 311 through the limiting block 81, and further transmits the force to the limiting plate 3 through the fixing groove 311, so that the limiting rod 5 is evenly stressed.

[0028] like Figures 1 to 3 As shown, the mounting frame 2 is provided with an annular groove 23, in which a retaining spring 9 is disposed. The limiting plate 3 is provided with a contact portion 33, which abuts against the retaining spring 9. A retaining ring is installed in the annular groove 23, which abuts against the contact portion 33 on the limiting plate 3, preventing the limiting plate 3 from axially moving on the mounting frame 2, which would cause the sector block 4 to be pulled by axial force, thereby preventing the chain from being decoupled.

[0029] like Figure 3 and Figure 4As shown, a guide groove 331 is provided in the contact portion 33, and a corresponding guide bar 24 is provided on the mounting frame 2. The guide groove 331 and the guide bar 24 cooperate to allow the mounting frame 2 and the limit plate 3 to rotate synchronously, preventing the retaining spring 9 and the limit plate 3 from relative rotation and wear, which would cause axial movement of the limit plate 3.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0031] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A combined sprocket, comprising a rotating rod (1) and a mounting frame (2), wherein a rotating hole (21) is provided in the mounting frame (2), and the rotating rod (1) is passed through the rotating hole (21), characterized in that: A limiting plate (3) is installed on the mounting frame (2), and a sector block (4) is installed between the limiting plates (3). The sector block (4) is provided with a chain tooth (41), and a sliding groove (42) and a sliding block (43) are provided on the side of the sector block (4). A positioning block (22) is provided on the outer wall of the mounting frame (2), and a positioning groove (44) is provided on the bottom of the sector block (4). A limiting hole (45) is provided on the sector block (4), and a limiting hole (31) is provided on the limiting plate (3). The limiting hole (45) and the limiting hole (31) pass through the limiting rod (5).

2. A combined sprocket according to claim 1, characterized in that: The chain tooth (41) end of the sector block (4) is provided with an extended edge (46), the surface of the sector block (4) is provided with a reinforcing rib (47), and the outer surface of the limiting plate (3) is provided with a circumferentially extending reinforcing strip (32).

3. A combined sprocket according to claim 1, characterized in that: A mounting groove (221) is provided in the positioning block (22), a spring (6) is installed in the mounting groove (221), a convex block (441) is provided in the positioning groove (44), and the convex block (441) abuts against the spring (6).

4. A combined sprocket according to claim 1, characterized in that: A fixing groove (311) is provided on the second limiting hole (31), a fixing portion (51) is provided at one end of the limiting rod (5), the fixing portion (51) and the fixing groove (311) are fixedly connected by a screw (7), and a fixing plate (8) is installed in the fixing groove (311) at the other end of the limiting rod (5).

5. A combined sprocket according to claim 4, characterized in that: A limiting slot (52) is provided on the limiting rod (5), and a corresponding limiting block (81) is provided on the fixing plate (8).

6. A combined sprocket according to claim 1, characterized in that: The mounting frame (2) is provided with an annular groove (23), a retaining spring (9) is provided in the annular groove (23), and a contact portion (33) is provided on the limiting plate (3), and the contact portion (33) abuts against the retaining spring (9).

7. The combined sprocket according to claim 1, characterized in that: A guide groove (331) is provided in the contact portion (33), and a corresponding guide strip (24) is provided on the mounting frame (2).

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