Built-in lubricating assembly of chain wheel
By designing a built-in lubrication component for the sprocket and adopting an oil injection hole and ball bearing cavity structure, the problems of low sprocket lubrication efficiency and lubricating oil leakage are solved, achieving convenient and efficient lubrication control and improving equipment stability.
Patent Information
- Application Number
- CN202520498795.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing technologies, sprocket lubrication methods are inefficient, manual application is uneven and can easily lead to increased wear, and centralized lubrication systems are costly, complex to maintain, inconvenient to fill, difficult to control precisely, and prone to leakage and waste.
A sprocket built-in lubrication component was designed, including an oil injection hole, a sealing component, a flow chamber, and a ball bearing chamber. Oil injection is achieved by rotating the T-shaped sealing block, and the ball bearing and spring structure is used to achieve precise discharge of lubricating oil, ensuring timely lubrication of key friction parts.
It achieves efficient and precise lubrication control, reduces manpower and costs, reduces lubricant waste and environmental pollution, and improves equipment stability and energy efficiency.
Smart Images
Figure CN223725338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chain wheel field, concretely is a kind of chain wheel built-in lubricating assembly. BACKGROUND
[0002] The past is mostly artificial regularly using oil brush and the like tool, directly smears lubricating oil in the way of chain and chain wheel surface.This method is inefficient, consumes manpower and time.Moreover, artificial smearing is difficult to guarantee that lubricating oil is evenly covered, and it is easy to appear that some areas are insufficiently lubricated, leading to accelerated wear.In addition, lubricating oil is easily lost due to splashing, dripping during equipment operation, not only waste resources, but also may cause pollution to working environment.
[0003] Limitations of centralized lubrication system
[0004] Although centralized lubrication system can realize automatic oil injection, it is complex, high in cost and difficult to install and maintain.It is not suitable for some small mechanical equipment or cost-sensitive application scenarios.Meanwhile, the pipeline of centralized lubrication system is prone to blockage, leakage and other problems, and once a fault occurs, the troubleshooting and repair process is tedious, which will affect the normal operation of the equipment.
[0005] Disadvantages of existing built-in lubrication structure
[0006] Some designs that attempt to embed the lubrication structure have exposed many problems in actual application.For example, the oil injection method is not convenient enough, and many components need to be disassembled to complete the oil injection operation, increasing the maintenance workload.Moreover, the discharge of lubricating oil is difficult to accurately control, either unable to discharge oil in time and sufficient amount at the key contact parts of chain and chain wheel, leading to poor lubrication effect, or excessive oil discharge, causing waste of lubricating oil and possibly causing oil pollution to the surrounding environment, for which we propose a chain wheel built-in lubricating assembly. CONTENT OF THE UTILITY MODEL
[0007] In view of the deficiencies of the prior art, the utility model provides a chain wheel built-in lubricating assembly, which solves the above problems.
[0008] To achieve the above purpose, the utility model provides the following technical scheme: a chain wheel built-in lubricating assembly, comprising a chain wheel body, a plurality of sets of teeth are integrally formed on the outer side of the chain wheel body, the chain wheel body is engaged with a chain through the teeth, an oil grease containing cavity is formed in the inside of the chain wheel body, a plugging assembly communicating with the inside of the oil grease containing cavity is arranged on the surface of the chain wheel body, a plurality of sets of oil discharge structures are arranged on the outer side of the chain wheel body, and the plurality of sets of oil discharge structures are respectively located between the corresponding two teeth, and the oil discharge structure communicates with the oil grease containing cavity.
[0009] Preferably, the chain wheel body is provided with an oil injection hole at the position corresponding to the plugging assembly, and the plugging assembly communicates with the oil injection hole.
[0010] Preferably, the plugging assembly comprises an annular threaded block and a T-shaped plugging block, the annular threaded block is fixedly installed on the chain wheel body and communicates with the oil injection hole, one end of the T-shaped plugging block is inserted into the interior of the annular threaded block, and a threaded annular groove is formed in the position corresponding to the annular threaded block of the T-shaped plugging block, and the threaded annular groove is threadedly connected with the annular threaded block.
[0011] Preferably, a plurality of groups of flow cavities and ball cavities are formed in the interior of the chain wheel body, the ball cavities communicate with the corresponding flow cavities, one end of the flow cavity communicates with the grease accommodating cavity, one side of the ball cavity communicates with the outside of the chain wheel body, the ball cavity is located between two adjacent teeth, and an oil discharge structure is arranged in the interior of the ball cavity.
[0012] Preferably, the oil discharge structure comprises a spring and a ball, the spring is fixedly installed on the bottom inner wall of the ball cavity, a tapered region is formed on the inner wall of one end of the ball cavity communicating with the outside, the tapered region is tapered, the ball is arranged between the spring and the tapered region, and the ball can roll in the interior of the ball cavity.
[0013] Preferably, when the spring normally rebounds, the ball abuts against the tapered region, and part of the ball extends to the outside of the chain wheel body.
[0014] Compared with the prior art, the chain wheel built-in lubricating assembly has the following beneficial effects:
[0015] Convenient and efficient oil injection mode
[0016] The chain wheel built-in lubricating assembly is provided with a special oil injection hole and a plugging assembly matched with the oil injection hole, the plugging assembly comprises an annular threaded block and a T-shaped plugging block, when oil injection is needed, an operator only needs to rotate the T-shaped plugging block and dismount it from the annular threaded block, and then lubricating oil can be injected into the grease accommodating cavity through the oil injection hole. The whole process does not need to dismount other complex components of the chain wheel, greatly saves oil injection time and labor cost, and significantly improves oil injection efficiency.
[0017] Precise lubrication control
[0018] The assembly is internally designed with multiple groups of flow cavities and ball cavities, and the oil discharge structure comprises a spring and balls. When the sprocket is normally running, the spring makes the balls tightly fit the conical area, effectively preventing the lubricating oil from leaking. When the round shaft part of the chain moves to the gap area between two teeth and presses the balls, the balls retract, and the lubricating oil is accurately discharged to the contact part of the chain and the teeth through the gap between the ball cavities, the balls and the conical area. This design ensures that the key friction parts can obtain timely and sufficient lubrication, avoiding the problems of insufficient or excessive lubrication, and achieving precise lubrication control.
[0019] Simple structure, reliable and low cost
[0020] Compared with the centralized lubrication system, the assembly has a relatively simple structure and does not involve complex pipeline systems and precise control elements. The main components such as the sprocket body, the teeth, the plugging assembly and the oil discharge structure are all common mechanical structures, which are low in processing and manufacturing difficulty and controllable in cost. At the same time, the simple structure also reduces the probability of failure and the workload and cost of maintenance. Even if a failure occurs, it is relatively easy to troubleshoot and repair, which can effectively ensure the normal operation of the equipment and improve the stability and reliability of the equipment.
[0021] Environment-friendly and energy-saving
[0022] Precise lubrication control avoids the large splashing and dripping of lubricating oil, reduces the waste of lubricating oil and reduces the oil pollution to the working environment. In addition, due to the good lubrication effect, the friction resistance between the chain and the sprocket can be reduced, thereby reducing the energy consumption during the operation of the equipment and achieving the effect of energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a structural schematic view of the utility model;
[0024] Figure 2 is a front view schematic view of the utility model;
[0025] Figure 3 is Figure 2 is a sectional view schematic view of A-A in the utility model;
[0026] Figure 4 is Figure 3 is a local enlarged schematic view of B in the utility model;
[0027] Figure 5 is a top view schematic view of the utility model;
[0028] Figure 6 is a structural schematic view of the utility model;
[0029] Figure 7 is Figure 6A local enlarged view of D in the figure.
[0030] In the figure: 1, sprocket body; 2, tooth; 3, chain; 4, oil injection hole; 5, annular threaded block; 6, T-shaped blocking block; 7, threaded annular groove; 8, grease accommodating cavity; 9, flow cavity; 10, ball cavity; 11, spring; 12, ball; 13, tapered region. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0032] Please refer to Figures 1-7 A sprocket built-in lubricating assembly, comprising a sprocket body 1, a plurality of sets of teeth 2 are integrally formed on the outer side of the sprocket body 1 at equal intervals, the sprocket body 1 engages a chain 3 through the teeth 2, an oil accommodating cavity 8 is formed in the inside of the sprocket body 1, a blocking assembly communicating with the inside of the oil accommodating cavity 8 is arranged on the surface of the sprocket body 1, a plurality of sets of oil discharge structures are arranged on the outer side of the sprocket body 1, the plurality of sets of oil discharge structures are respectively located between the corresponding two teeth 2, the oil discharge structure communicates with the oil accommodating cavity 8, when oil injection is needed, the blocking structure is opened, then lubricating oil is injected into the oil accommodating cavity 8, then the chain 3 is extruded to the oil injection structure along with the rotation of the sprocket body 1, then the lubricating oil is discharged to the contact position of the tooth and the chain 3.
[0033] Further, an oil injection hole 4 is formed at the position corresponding to the blocking assembly of the sprocket body 1, and the blocking assembly communicates with the oil injection hole 4.
[0034] Further, the blocking assembly comprises an annular threaded block 5 and a T-shaped blocking block 6, the annular threaded block 5 is fixedly installed on the sprocket body 1, and the annular threaded block 5 communicates with the oil injection hole 4, one end of the T-shaped blocking block 6 is inserted into the inside of the annular threaded block 5, a threaded annular groove 7 is formed on the position corresponding to the annular threaded block 5 of the T-shaped blocking block 6, and the threaded annular groove 7 is threadedly connected with the annular threaded block 5, when the blocking assembly needs to be opened, the T-shaped blocking block 6 is rotated, and the T-shaped blocking block 6 can be removed.
[0035] Further, a plurality of sets of flow cavities 9 and ball cavities 10 are formed in the inside of the sprocket body 1, the ball cavity 10 communicates with the corresponding flow cavity 9, one end of the flow cavity 9 communicates with the oil accommodating cavity 8, one side of the ball cavity 10 communicates with the outside of the sprocket body 1, the ball cavity 10 is located between the adjacent two teeth 2, and the oil discharge structure is arranged in the inside of the ball cavity 10.
[0036] Further, the oil discharge structure includes a spring 11 and a ball 12, the spring 11 is fixedly installed on the inner wall of the bottom of the ball cavity 10, the inner wall of one end of the ball cavity 10 communicated with the outside is provided with a tapered area 13, the tapered area 13 is tapered, the ball 12 is arranged between the spring 11 and the tapered area 13, and the ball 12 can roll in the inside of the ball cavity 10.
[0037] Further, when the spring 11 normally rebounds, the ball 12 will be in close contact with the tapered area 13, at this time, a part of the ball 12 will extend to the outside of the sprocket body 1, when the inside of the oil containing cavity 8 injects lubricating oil, when the sprocket body 1 rotates, the round shaft part of the chain 3 moves to the gap area between the two teeth 2, and then is pressed to the ball 12, at this time, the ball 12 will be retracted to the inside of the ball cavity 10, there is a gap between the ball 12 and the inner wall of the tapered area 13, and the oil is discharged to the outside of the sprocket body 1 along the ball cavity 10 and the ball cavity 10 to be lubricated.
[0038] Structural description:
[0039] The sprocket body 1 is the core bearing part of the whole lubricating assembly, and is the installation basis of other structures. A plurality of teeth 2 are integrally formed on the outer side at equal intervals, the teeth 2 are meshed with the chain 3 to achieve power transmission. In the inside of the sprocket body 1, an oil containing cavity 8 is specially designed to store lubricating oil and provide lubricating medium source for the whole lubricating system. At the same time, the sprocket body 1 is provided with an oil injection hole 4 at the position corresponding to the sealing assembly to provide a channel for the injection of lubricating oil.
[0040] The teeth 2 are integrally formed on the outer side of the sprocket body 1 at equal intervals, and are the key structure for the effective meshing of the sprocket and the chain 3. In the rotating process of the sprocket, the teeth 2 cooperate with the chain 3 to realize the continuous movement of the chain through the alternating engagement of the teeth and the chain links, thereby driving the mechanical parts connected thereto to operate.
[0041] The chain 3 is meshed with the teeth 2 of the sprocket body 1 and plays a role in transmitting power in mechanical equipment. In the operation process of the sprocket, the round shaft area of the chain 3 will interact with the oil discharge structure when passing through the gap between the sprocket teeth, triggering the discharge of lubricating oil to realize the lubrication of the contact part of the chain and the teeth.
[0042] The oil injection hole 4 is provided at the position corresponding to the sealing assembly of the sprocket body 1, which is a channel connecting the outside and the oil containing cavity 8. When it is necessary to inject oil into the oil containing cavity 8, the lubricating oil can be injected into the oil containing cavity 8 through the oil injection hole 4 by opening the sealing assembly, thereby providing reserves for subsequent lubrication work.
[0043] Annular threaded block 5: The annular threaded block 5 is fixedly installed on the sprocket body 1 and communicates with the oil injection hole 4. It is an important component of the plugging assembly, and the threaded structure inside it is used to cooperate with the T-shaped plugging block 6 to realize the plugging and opening functions of the oil injection hole 4. Through threaded connection, it can ensure that the oil injection hole 4 is tightly plugged in the normal working state to prevent lubricating oil leakage.
[0044] T-shaped plugging block 6: One end of the T-shaped plugging block 6 is inserted into the inside of the annular threaded block 5, and a threaded annular groove 7 is formed on the position corresponding to the annular threaded block 5. The T-shaped plugging block 6 is connected with the annular threaded block 5 through the threaded annular groove 7. When it is necessary to open the plugging assembly, only need to rotate the T-shaped plugging block 6 to separate it from the annular threaded block 5, and then the T-shaped plugging block 6 can be disassembled to open the oil injection hole 4, which is convenient for oil injection operation. After completing the oil injection, reverse rotation of the T-shaped plugging block 6 can re-plug the oil injection hole 4.
[0045] Threaded annular groove 7: The threaded annular groove 7 is formed on the position corresponding to the annular threaded block 5 of the T-shaped plugging block 6, which is used to cooperate with the internal thread of the annular threaded block 5 to form a threaded connection structure. This connection method enables the T-shaped plugging block 6 to be firmly installed in the annular threaded block 5, and also facilitates disassembly and installation when needed to realize effective plugging and opening control of the oil injection hole 4.
[0046] Grease containing cavity 8: The grease containing cavity 8 is located in the inside of the sprocket body 1 and is a key part for storing lubricating oil. In the working process of the entire lubricating assembly, the lubricating oil stored in the grease containing cavity 8 is transported to the contact position of the chain 3 and the teeth 2 through the cooperation of a series of structures, plays a lubricating role, reduces the wear between parts, and prolongs the service life of the equipment.
[0047] Flow cavity 9: A plurality of flow cavities 9 are formed in the inside of the sprocket body 1, and one end of the flow cavity 9 communicates with the grease containing cavity 8. Its role is to serve as a lubricating oil conveying channel to guide the lubricating oil in the grease containing cavity 8 to the ball cavity 10, and then prepare for the subsequent oil discharge lubrication work.
[0048] Ball cavity 10: The ball cavity 10 communicates with the corresponding flow cavity 9, and one side of the ball cavity 10 communicates with the outside of the sprocket body 1 and is located between two adjacent teeth 2. The ball cavity 10 is provided with an oil discharge structure in the inside of the ball cavity 10, and the ball cavity 10 provides installation space for the oil discharge structure, and cooperates with the oil discharge structure to realize the discharge of lubricating oil in the process of interaction between the chain 3 and the sprocket body 1. When the round shaft part of the chain 3 extrudes the ball 12 in the oil discharge structure, the ball 12 is displaced, so that the lubricating oil can be discharged to the outside of the sprocket body 1 through the ball cavity 10 to lubricate the contact position of the chain and the teeth.
[0049] Spring 11: The spring 11 is fixedly installed on the bottom inner wall of the ball cavity 10, and is an important component of the oil discharge structure. In the normal state, the spring 11 is in the rebound state, provides upward thrust for the ball 12, makes the ball 12 adhere to the tapered area 13, and prevents the lubricating oil from leaking. When the round shaft part of the chain 3 extrudes the ball 12, the spring 11 is compressed, provides a buffer space for the retraction of the ball 12, and ensures that the oil discharge structure can work normally.
[0050] Ball 12: The ball 12 is arranged between the spring 11 and the tapered area 13, and can roll in the interior of the ball cavity 10. When the spring 11 normally rebounds, a part of the ball 12 extends to the outside of the sprocket body 1. When the round shaft part of the chain 3 moves to the gap area between the two teeth 2 and extrudes the ball 12, the ball 12 retracts to the interior of the ball cavity 10, so that a gap is formed between the ball 12 and the inner wall of the tapered area 13. At this time, the lubricating oil in the oil containing cavity 8 can be discharged to the outside of the sprocket body 1 along the ball cavity 10 and the gap, so as to realize the lubrication of the contact part of the chain and the tooth.
[0051] Tapered area 13: The tapered area 13 is located on the inner wall of the one end of the ball cavity 10 connected to the outside, and is in a tapered shape. In the normal case, the ball 12 adheres to the tapered area 13 under the action of the spring 11, and the sealing property of the tapered structure is utilized to prevent the lubricating oil from leaking. When the ball 12 retracts under the extrusion of the round shaft part of the chain 3, a gap is formed between the tapered area 13 and the ball 12, so as to provide a channel for the discharge of the lubricating oil.
[0052] Working principle: When oil needs to be injected, the plugging structure is opened, then the lubricating oil is injected into the oil containing cavity 8, then the lubricating oil is discharged to the contact part of the tooth and the chain 3 along with the rotation of the sprocket body 1 and the extrusion of the round shaft area of the chain 3.
[0053] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A sprocket built-in lubrication assembly comprising a sprocket body (1), characterized in that, The chain wheel body (1) is integrally formed with a plurality of sets of teeth (2) on the outer side, the chain wheel body (1) engages with the chain (3) through the teeth (2), the chain wheel body (1) is provided with a plurality of sets of oil discharge structures on the outer side, and the plurality of sets of oil discharge structures are respectively located between the corresponding two teeth (2).
2. A sprocket built-in lubrication assembly according to claim 1, characterized in that: The chain wheel body (1) is provided with an oil injection hole (4) at the position corresponding to the sealing assembly.
3. A sprocket built-in lubrication assembly according to claim 2, wherein: The sealing assembly comprises an annular threaded block (5) and a T-shaped sealing block (6), the annular threaded block (5) is fixedly installed on the chain wheel body (1), and the annular threaded block (5) is in communication with the oil injection hole (4), one end of the T-shaped sealing block (6) is inserted into the interior of the annular threaded block (5), and the T-shaped sealing block (6) is provided with a threaded annular groove (7) at the position corresponding to the annular threaded block (5), and the threaded annular groove (7) is threadedly connected with the annular threaded block (5).
4. A sprocket built-in lubrication assembly according to claim 1, wherein: The chain wheel body (1) is provided with a plurality of sets of flow cavities (9) and ball cavities (10) in the interior, the ball cavity (10) is in communication with the corresponding flow cavity (9), one end of the flow cavity (9) is in communication with the grease accommodating cavity (8), one side of the ball cavity (10) is in communication with the outside of the chain wheel body (1), the ball cavity (10) is located between the adjacent two teeth (2), and the oil discharge structure is arranged in the interior of the ball cavity (10).
5. A sprocket built-in lubrication assembly according to claim 4, wherein: The oil discharge structure comprises a spring (11) and a ball (12), the spring (11) is fixedly installed on the bottom inner wall of the ball cavity (10), the inner wall of one end of the ball cavity (10) in communication with the outside is provided with a tapered area (13), the tapered area (13) is tapered, the ball (12) is arranged between the spring (11) and the tapered area (13), and the ball (12) can roll in the interior of the ball cavity (10).
6. A sprocket built-in lubrication assembly according to claim 5, wherein: When the spring (11) normally rebounds, the ball (12) will be in close contact with the tapered area (13), at this time, part of the ball (12) will extend to the outside of the chain wheel body (1).