A sprocket structure facilitating dismounting of teeth

Abstract

The utility model relates to chain wheel transmission technical field provides a chain wheel structure convenient to dismantle tooth, include: wheel hub and detachable gear ring, the detachable gear ring slip cover is established in wheel hub outer wall, wheel hub end portion is provided with outer thread, fixed slip cover and the axial slip cover of setting in wheel hub on the dynamic slip cover, the detachable gear ring is set up between fixed slip cover and dynamic slip cover, gland nut, the inner thread that cooperates with outer thread is set up in the gland nut, and the dynamic slip cover can be pressed tightly by screwing up the gland nut, and then the detachable gear ring is clamped and fixed between fixed slip cover and dynamic slip cover, the axial compression dynamic slip cover can be realized through the rotation of single gland nut, and the quick replacement of detachable gear ring can be realized through the rotation dismounting of gland nut, and the efficiency of gear ring dismounting and replacement can be improved, thereby realizing the function of shortening gear ring maintenance time length, and the stoppage loss caused in maintenance time length process can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of sprocket transmission technology, and in particular to a sprocket structure that facilitates the disassembly of teeth. Background Technology

[0002] The sprocket is a core component in a mechanical transmission system. Its core function is to transmit power and motion through meshing with the chain.

[0003] As the core component of chain drive, the sprocket's teeth are subjected to alternating impact loads and abrasive wear over a long period of time, making it prone to failure. Traditional integral sprockets need to be replaced as a whole after the teeth wear down. Disassembly requires the removal of multiple fixing bolts, which is cumbersome and time-consuming. It has the problems of being complicated to disassemble and replace, having low disassembly and replacement efficiency, and long maintenance time. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology where the integral sprocket needs to be replaced as a whole after the teeth wear. Disassembly requires the removal of multiple fixing bolts, which is cumbersome and time-consuming. It also results in complex disassembly and replacement, low efficiency, and long maintenance time.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sprocket structure that facilitates the disassembly of teeth, comprising:

[0006] A wheel hub and a detachable gear ring, wherein the detachable gear ring is slidably fitted onto the outer wall of the wheel hub; the end of the wheel hub is provided with external threads;

[0007] Fixed sliding sleeve and movable sliding sleeve that can be axially slidably sleeved on the hub;

[0008] The detachable toothed ring is engaged between the fixed sliding sleeve and the movable sliding sleeve;

[0009] A pressure cap nut is provided with an internal thread that mates with the external thread. Tightening the pressure cap nut can press the movable sliding sleeve, thereby clamping and fixing the detachable toothed ring between the fixed sliding sleeve and the movable sliding sleeve.

[0010] The moving sleeve can be axially pressed by rotating the single pressure cap nut. The removable gear ring can be quickly replaced by rotating and disassembling the pressure cap nut. The operation is simple and quick, which can improve the efficiency of disassembling and replacing the gear ring, thereby shortening the maintenance time of the gear ring and reducing downtime losses caused by maintenance.

[0011] In a preferred embodiment, a guide structure is provided between the moving sleeve and the hub to prevent relative rotation, which includes:

[0012] The outer axle surface of the hub is provided with multiple guide keyways that are evenly distributed along the axial direction;

[0013] The inner wall of the movable sleeve is provided with a guide key that slides in conjunction with the guide keyway; the guide keyway and the guide key can ensure the precise sliding of the movable sleeve, thereby improving the assembly accuracy and operational stability.

[0014] In a preferred embodiment, multiple evenly distributed positioning keyways are provided on both ends of the detachable gear ring;

[0015] Both the fixed and moving sliding sleeves have locating keys on their faces toward the detachable gear ring end face, which engage with the locating keyway. Their meshing improves the torque transmission capability for high torques, thereby enhancing the reliability and load-bearing capacity during transmission.

[0016] In a preferred embodiment, both the fixed sliding sleeve and the movable sliding sleeve are provided with uniformly distributed grooves on the end face of the detachable gear ring. The grooves can increase the contact friction with the detachable gear ring, making the detachable gear ring more stable under the pressed state.

[0017] In a preferred embodiment, a nylon rubber ring is embedded in the outer end of the internal thread of the pressure cap nut. When the pressure cap nut is tightened to the specified torque, an interference fit is generated between the nylon rubber ring and the end of the hub, forming a continuous frictional resistance and preventing loosening.

[0018] In a preferred embodiment, the outer end of the pressure cap nut is hexagonal. The hexagonal design of the outer end of the pressure cap nut facilitates its use with common tools such as wrenches, making it easy to install and remove the pressure cap nut.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] This invention enables axial clamping of the moving slide sleeve by rotating a single pressure cap nut. By rotating and disassembling the pressure cap nut, the detachable gear ring can be quickly replaced. The operation is simple and quick, which can improve the efficiency of disassembling and replacing the gear ring, thereby shortening the maintenance time of the gear ring and reducing downtime losses caused by maintenance. Attached Figure Description

[0021] Figure 1 A schematic diagram of the main structure of a sprocket structure with easily detachable teeth provided by this utility model;

[0022] Figure 2 A schematic diagram of the disassembled structure of a sprocket structure that facilitates the disassembly of teeth, provided by this utility model;

[0023] Figure 3 A schematic diagram of the bushing structure of a sprocket structure that facilitates the disassembly of teeth, provided by this utility model;

[0024] Figure 4 This utility model provides a schematic diagram of the moving sleeve of a sprocket structure that facilitates the disassembly of teeth.

[0025] Legend:

[0026] 1. Wheel hub; 2. Removable gear ring; 3. Fixed sliding sleeve; 4. Moving sliding sleeve; 5. Pressure cap nut; 6. Locating keyway; 7. Nylon rubber ring; 8. Internal thread; 9. External thread; 10. Groove; 11. Guide key; 12. Locating key; 13. Guide keyway. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-4 This embodiment provides a sprocket structure that facilitates the disassembly of the teeth, and the specific idea is as follows:

[0029] A sprocket structure for easy disassembly of teeth, comprising:

[0030] include:

[0031] The wheel hub 1 and the detachable toothed ring 2 are slidably fitted on the outer wall of the wheel hub 1; the end of the wheel hub 1 is provided with an external thread 9;

[0032] A fixed sliding sleeve 3 and a movable sliding sleeve 4 that can be axially slidably fitted onto the hub 1; the fixed sliding sleeve 3 is welded to the end of the hub 1.

[0033] The detachable gear ring 2 is engaged between the fixed sliding sleeve 3 and the movable sliding sleeve 4;

[0034] The position of the disassembled gear ring 2 can be fixed by using the fixed sliding sleeve 3 and the movable sliding sleeve 4;

[0035] The pressure cap nut 5 has an internal thread 8 that mates with the external thread 9. Tightening the pressure cap nut 5 can press the movable sleeve 4, thereby clamping and fixing the detachable toothed ring 2 between the fixed sleeve 3 and the movable sleeve 4.

[0036] The pressure cap nut 5 is located at the outer end of the internal thread 8 and is fitted with a nylon rubber ring 7; the outer end of the pressure cap nut 5 is hexagonal.

[0037] The design of the nylon rubber ring 7 allows for interference compression between the gland nut 5 and the end of the hub 1 when the gland nut 5 is tightened to the specified torque, forming continuous frictional resistance and preventing the gland nut 5 from loosening during transmission. The hexagonal design of the outer end of the gland nut 5 facilitates its use with common tools such as wrenches, making it easy to install and remove the gland nut 5.

[0038] The axial clamping of the moving sleeve 4 can be achieved by rotating the single pressure cap nut 5. The detachable gear ring 2 can be quickly replaced by rotating and disassembling the pressure cap nut 5. The operation is simple and quick, which can improve the efficiency of disassembling and replacing the gear ring, thereby shortening the maintenance time of the gear ring and reducing downtime losses caused by maintenance.

[0039] It is important to note that:

[0040] A guide structure to prevent relative rotation is provided between the moving sleeve 4 and the hub 1, which includes:

[0041] Multiple guide keyways 13 evenly distributed along the axial direction are provided on the outer axle surface of the hub 1;

[0042] The inner wall of the movable sleeve 4 is provided with a guide key 11 that slides in conjunction with the guide keyway 13;

[0043] The guide key 11 restricts the circumferential rotation of the moving sleeve (4) relative to the hub (1) and allows it to slide axially.

[0044] The guide keyway 13, in conjunction with the guide key 11, ensures the precise sliding of the moving sleeve 4, thereby improving assembly accuracy and operational stability.

[0045] It is important to note that:

[0046] Multiple evenly distributed positioning keyways 6 are provided on both ends of the detachable gear ring 2;

[0047] Both the fixed sliding sleeve 3 and the movable sliding sleeve 4 are provided with positioning keys 12 that cooperate with the positioning keyway 6 on the end face of the detachable toothed ring 2;

[0048] Multiple evenly distributed positioning keyways 6 are provided on both ends of the detachable gear ring 2;

[0049] Both the fixed sliding sleeve 3 and the movable sliding sleeve 4 are provided with positioning keys 12 that cooperate with the positioning keyway 6 on the end face of the detachable toothed ring 2;

[0050] The locating keyway 6 and the locating key 12 engage with each other; their mutual engagement can improve the torque transmission capability of large torque, thereby improving the reliability and load-bearing capacity during the transmission process.

[0051] in:

[0052] Both the fixed sliding sleeve 3 and the movable sliding sleeve 4 have evenly distributed grooves 10 on their end faces facing the detachable toothed ring 2. The grooves 10 can increase the contact friction with the detachable toothed ring 2, making the detachable toothed ring 2 more stable under the pressed state.

[0053] The assembly process for this structure is as follows:

[0054] Slide the detachable toothed ring 2 onto the outer circumference of the hub 1 and push it toward the fixed sliding sleeve 3. During the pushing process, it is necessary to ensure that the positioning keyway 6 and the positioning key 12 are matched and engaged.

[0055] Assemble the movable sleeve 4 by sliding it onto the outer circumference of the hub 1. After positioning the movable sleeve 4 with the guide keyway 13 and the guide key 11, push it toward the detachable gear ring 2 until the positioning keyway 6 and the positioning key 12 engage.

[0056] The end cap nut 5 is screwed into the external thread 9 at the end. During the screwing process, the end of the end cap thread 5 will be tightly pressed against the outer end of the moving sleeve 4, thereby axially pressing the moving sleeve 4 and fastening the detachable toothed ring 2.

[0057] The disassembly process is the reverse of the assembly process.

[0058] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A sprocket structure with easily detachable teeth, characterized in that, include: A hub (1) and a detachable gear ring (2), wherein the detachable gear ring (2) is slidably sleeved on the outer wall of the hub (1); the end of the hub (1) is provided with an external thread (9). Fixed sliding sleeve (3) and movable sliding sleeve (4) that can be axially slidably sleeved on hub (1); The detachable toothed ring (2) is engaged between the fixed sliding sleeve (3) and the movable sliding sleeve (4); The pressure cap nut (5) has an internal thread (8) that mates with the external thread (9). Tightening the pressure cap nut (5) can press the movable sleeve (4), thereby clamping and fixing the detachable toothed ring (2) between the fixed sleeve (3) and the movable sleeve (4).

2. The sprocket structure for easy disassembly of teeth according to claim 1, characterized in that, A guide structure to prevent relative rotation is provided between the movable sleeve (4) and the hub (1), which includes: Multiple guide keyways (13) are evenly distributed along the axial direction on the outer axle surface of the hub (1). The inner wall of the movable sleeve (4) is provided with a guide key (11) that slides in cooperation with the guide keyway (13).

3. The sprocket structure for easy disassembly of teeth according to claim 1, characterized in that, The detachable gear ring (2) has multiple evenly distributed positioning keyways (6) on both ends. Both the fixed sliding sleeve (3) and the movable sliding sleeve (4) are provided with positioning keys (12) that cooperate with the positioning keyway (6) on the end face of the detachable gear ring (2).

4. The sprocket structure for easy disassembly of teeth according to claim 1, characterized in that, Both the fixed sliding sleeve (3) and the movable sliding sleeve (4) have uniformly distributed grooves (10) on the end face facing the detachable toothed ring (2).

5. The sprocket structure for easy disassembly of teeth according to claim 1, characterized in that, The pressure cap nut (5) is fitted with a nylon rubber ring (7) at the outer end of the internal thread (8).

6. The sprocket structure for easy disassembly of teeth according to claim 1, characterized in that, The outer end of the pressure cap nut (5) is hexagonal.

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