Chain wheel with oil storage structure
By setting an oil storage structure on the sprocket, the problem of lubricating oil being thrown out at high speeds is solved, achieving effective storage and lubrication of lubricating oil and extending the service life of the sprocket.
Patent Information
- Application Number
- CN202520049133.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The existing lubrication method for sprockets is ineffective. The lubricating oil is thrown out at high speeds, resulting in dry friction of the rollers, rapid wear, and short service life.
Design a sprocket with an oil storage structure, including a through hole, a rotating structure, a load-bearing component, and an oil storage structure. The oil storage structure stores lubricating oil to prevent it from being thrown out during rotation, thus ensuring lubrication.
It extends the service life of the lubricating oil, improves the lubrication effect, reduces the wear rate, and extends the service life of the rotating structure.
Smart Images
Figure CN223469677U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a chain wheel with oil storage structure. BACKGROUND
[0002] Chain saw is a kind of garden machinery widely used in urban landscaping pruning, and also plays an important role in the forestry field, and the felling device can be used for forest felling, timber making and branch beating in the forestry.
[0003] In the prior art, the driven chain wheel generally includes a rotating shaft, a plurality of rollers and a chain wheel part, the plurality of rollers are arranged around the outer peripheral wall of the rotating shaft, the chain wheel part is sleeved, the rollers are located between the chain wheel part and the rotating shaft, and then the chain wheel part is driven to rotate by the saw chain; In the use process, it is found that the existing lubrication mode is to inject lubricating oil into the gap between the chain wheel and the guide plate, so that the lubricating oil flows onto the chain wheel and the rollers, but the lubrication effect is not good; Specifically, due to the high rotating speed of the chain wheel, the lubricating oil is directly thrown out, which causes the lubricating oil to rapidly decrease, resulting in dry friction of the rollers, rapid wear and short service life.
[0004] Therefore, it is urgent to provide a chain wheel capable of storing lubricating oil, reducing the lubricating oil reduction speed, prolonging the lubricating time and prolonging the service life of the rollers and the chain wheel part. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a chain wheel with oil storage structure to solve the problem of poor lubrication effect of the existing chain wheel in the background art.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a chain wheel with oil storage structure, which is arranged on the saw chain guide plate head and includes a chain wheel part, wherein, a through hole, a rotating structure, a bearing part and an oil storage structure are further included; The through hole is arranged at the center position of the chain wheel part; The rotating structure is in the through hole; The bearing part is sleeved on the rotating structure; The chain wheel part is supported on the rotating structure to rotate through the bearing part; The oil storage structure is arranged on the bearing part and the rotating structure and is used for lubricating the rotating structure.
[0007] Optionally, the rotating structure includes an inner cylinder located at the center of the through hole, and a plurality of rolling elements are arranged around the outer ring wall of the inner cylinder, the rolling elements are in contact with the bearing part and located in the oil storage structure.
[0008] Optionally, the height of the rolling element is less than or equal to the height of the inner cylinder.
[0009] Optionally, the bearing part includes a bearing ring, and two limiting rings are arranged on the outer ring wall of the bearing ring.
[0010] Optionally, the inner ring wall of the bearing ring is in contact with the rotating structure; the two limiting rings are respectively located on the two ends of the bearing ring, and the sprocket member is located between the two bearing rings.
[0011] Optionally, the oil storage structure comprises a lubricating cavity formed by cooperation of the inner cylindrical outer surface and the bearing inner surface.
[0012] Optionally, the oil storage structure further comprises two covers respectively arranged on the top end and the bottom end of the inner cylinder, and the two covers are flush with the plane of the inner cylinder.
[0013] Optionally, the inner cylinder is provided with a mounting groove matched with the cover.
[0014] Optionally, the cover is provided with an oil injection hole, and the number of the oil injection hole is not less than 1.
[0015] Optionally, the oil injection hole is a round hole or a waist-shaped hole.
[0016] Optionally, the sprocket member can be a toothed sprocket or a grooved sprocket; the sprocket member in the form of the grooved sprocket comprises a sprocket tooth plate and saw chain limiting plates arranged on both sides of the sprocket tooth plate.
[0017] Compared with the prior art, the chain sprocket with the oil storage structure has the following beneficial effects:
[0018] The chain sprocket with the oil storage structure can store lubricating oil through the arrangement of the oil storage structure, block the lubricating oil in cooperation with the bearing structure, prevent the lubricating oil from being directly thrown away when the sprocket member rotates, so that the lubricating oil can lubricate the rotating structure when the sprocket member rotates, prolong the use time of the lubricating oil, improve the lubricating effect, reduce the abrasion speed, and thus prolong the service life of the rotating structure. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic diagram of the overall structure of the utility model.
[0020] Figure 2 is a sectional view of the overall structure of the utility model.
[0021] Figure 3 is a schematic diagram of the oil storage structure of the utility model.
[0022] Figure 4 is a schematic diagram of the structure of the sprocket member and the bearing member of the utility model.
[0023] Figure 5 is a schematic diagram of the overall structure of the embodiment 2 of the utility model.
[0024] Figure 6Is the overall structure of the embodiment 2 in the cross-sectional view.
[0025] Figure 7 Is the schematic diagram of the chain wheel part, the bearing part and the oil storage structure in the embodiment 3 of the utility model.
[0026] Figure 8 Is the cross-sectional view of the oil storage structure in the embodiment 3 of the utility model.
[0027] Figure 9 Is the overall structure schematic diagram of the embodiment 4 of the utility model.
[0028] Figure 10 Is the structure schematic diagram of the chain wheel tooth plate in the embodiment 4 of the utility model.
[0029] Figure 11 Is the overall structure schematic diagram in the embodiment 5 of the utility model.
[0030] Figure 12 Is the overall structure schematic diagram in the embodiment 6 of the utility model.
[0031] Figure 13 Is the schematic diagram of another structure chain wheel part in the embodiment 6 of the utility model.
[0032] Figure 14 Is the structure schematic diagram of the chain wheel part in the embodiment 7 of the utility model.
[0033] In the drawing, 1, chain wheel part;11, chain wheel tooth plate;12, saw chain limiting plate;13, recess;14, heat dissipation hole;2, through hole;3, rotating structure;31, inner cylinder;32, rolling part;33, installation groove;4, bearing part;41, bearing ring;42, limiting baffle;5, oil storage structure;51, lubricating cavity;52, cover;521, oil injection hole. DETAILED DESCRIPTION
[0034] The following will be described in detail in combination with the drawings and specific implementation. In the following description, a lot of specific details are set forth in order to fully understand the utility. But the utility can be implemented in many other ways different from the description, and those skilled in the art can make similar extension without departing from the utility, so the utility is not limited by the specific embodiments disclosed below.
[0035] The chain wheel with oil storage structure of the application can be suitable for saw chain sprocket rotation and other occasions, of course, can also be used for other similar application scenarios, the following will be described in detail.
[0036] Embodiment 1
[0037] Reference is made to the drawings Figure 1 — Figure 4The figure shows a schematic structural diagram of a preferred embodiment of a sprocket with an oil storage structure of the present application. The sprocket with an oil storage structure comprises a sprocket member 1, a through hole 2 disposed at the center of the sprocket member 1, a rotating structure 3 located within the through hole 2, a bearing member 4 mounted on the outer wall of the rotating structure 3 and connected to the sprocket member 1, and an oil storage structure 5 disposed on the rotating structure 3 and the bearing member 4. The sprocket member 1 is supported on the rotating structure 3 by the bearing member 4 and rotates around the rotating structure 3. The oil storage structure 5 is used to lubricate the rotating structure 3.
[0038] The utility model supports the saw chain through the setting of the sprocket part 1, ensures that the saw chain is in a tensioned state, and guides the movement of the saw chain; provides an installation position for the rotating structure 3 through the setting of the through hole 2, ensures that the rotating structure 3 can cooperate with the sprocket part 1; provides a rotation center for the sprocket part 1 through the setting of the rotating structure 3, and reduces the friction generated when the sprocket part 1 rotates, reduces the difficulty of rotating the sprocket part 1, and makes the sprocket part 1 rotate more smoothly; is used to transmit the force exerted on the sprocket part 1 and provide support for the sprocket part 1 through the setting of the bearing part 4; can store lubricating oil through the setting of the oil storage structure 5, provide storage space for added lubricating oil, limit the flow direction of the lubricating oil, prevent the lubricating oil from being thrown out due to centrifugal force when the sprocket part 1 rotates, ensure that the lubricating oil can lubricate the rotating structure 3 for a long time, thereby reducing the wear of the rotating structure 3 and extending the service life of the rotating structure 3.
[0039] See attached Figure 1 — Figure 4 As shown, in the present invention, the rotating structure 3 includes an inner cylinder 31 located at the center of the through hole 2, and a plurality of rolling elements 32 arranged around the outer ring wall of the inner cylinder 31. The rolling elements 32 are in contact with the bearing element 4 and are located in the oil storage structure 5.
[0040] The present application provides a rotation center for the rotation of the sprocket member 1 by setting the inner cylinder 31; and adjusts the sliding friction to rolling friction by setting the rolling member 32, thereby reducing the friction generated during rotation.
[0041] See attached Figure 1 — Figure 4 As shown, in the present invention, the height of the rolling member 32 is equal to the height of the inner cylinder 31. By limiting the height of the rolling member 32 to be equal to the height of the inner cylinder 31, the contact area between the rolling member 32 and the inner cylinder 31 is ensured, thereby ensuring the bearing capacity of the rotating structure 3. At the same time, the rolling member 32 is prevented from shaking up and down during operation, so that both ends of the rolling member 32 and the inner cylinder 31 are restricted by the saw chain guide, ensuring the stability of the rolling member 32 during use.
[0042] See attached Figure 1 —Figure 4 As shown in the utility model, the bearing 4 comprises a bearing ring 41, two limiting rings 42 arranged on the top surface and the bottom surface of the bearing ring 41 respectively; the inner ring wall of the bearing ring 41 is in contact with the rotating structure 3; the limiting ring 42 is used for limiting the chain wheel 1; wherein the limiting ring 42 protrudes from the surface of the chain wheel 1.
[0043] The utility model discloses a bearing ring 41 is arranged, cooperates with the upper inner cylinder 31 and forms the lubricating cavity 51, and the rolling element 32 is located in the lubricating cavity 51, so that the rolling element 32 can be lubricated, and the bearing ring 41 can limit the lubricating oil, prevent the chain wheel 1 from being thrown by centrifugal force when rotating, and the specific speaking, the distance between the top surface and the bottom surface of the bearing 4 and the height of the inner cylinder 31 are all greater than the groove width of the guide plate groove on the guide plate, so the lubricating oil cannot be thrown out from the gap between the guide plate groove wall and the chain wheel 1 by centrifugal force, and cannot be thrown out along the outer wall of the chain wheel 1, ensuring that the lubricating oil can lubricate the rolling element 32.
[0044] It needs to be specially pointed out that the saw chain guide plate head is provided with an oil injection hole, lubricating oil can be injected into the oil storage structure 5, the oil injection hole can be plugged by a rubber block, the rubber block is disassembled when oil injection is needed, and the lubricating oil is high-temperature lithium-based grease and other solid lubricating oils.
[0045] Referring to the accompanying drawings Figure 1 Figure 4 As shown in the utility model, the working principle of the utility model is as follows:
[0046] The staff injects lubricating oil into the lubricating cavity 51 in the oil storage structure 5 through the oil injection hole on the saw chain guide plate head, the chain wheel 1 drives the bearing ring 41 to rotate when the saw chain drives the chain wheel 1 to rotate, the bearing ring 41 rotates and rolls with the rolling element 32, the lubricating oil is also rotated by the rotation of the bearing ring 41, centrifugal force is generated, the lubricating oil affected by the centrifugal force is blocked by the bearing ring 41 and cannot be thrown out through the gap between the chain wheel 1 and the guide plate groove, so the lubricating oil can be stored in the lubricating cavity 51, ensuring that the rolling element 32 is lubricated.
[0047] Embodiment 2
[0048] Referring to the accompanying drawings Figure 5 and Figure 6 As shown in the utility model, the difference between the embodiment and embodiment 1 lies in that the height of the rolling element 32 is less than the height of the inner cylinder 31 in the embodiment, the oil storage structure 5 further comprises two covers 52 arranged at the top end and the bottom end of the inner cylinder 31, the two covers 52 are flush with the plane of the inner cylinder 31, and the cover 52 is provided with an oil injection hole 521.
[0049] In this embodiment, the height of the rolling element 32 is reduced, and a cover 52 is provided on the inner cylinder 31 to seal the top and bottom of the lubrication chamber 51. Compared with the first embodiment in which the top and bottom ends of the lubrication chamber 51 are sealed by the saw chain guide, the cover 52 of this embodiment is independently sealed and will not be affected by the flatness of other parts, making the flatness easier to control, thereby reducing the difficulty of processing. Specifically, the sealing effect of the first embodiment is affected by the flatness of the inner cylinder 31. When the top surface or bottom surface of the inner cylinder 31 has poor flatness, the gap between the saw chain guide and the lubrication chamber 51 will become larger, which will increase the rate of lubricating oil loss. However, in this embodiment, the loss of lubricating oil in the lubrication chamber 51 through the gap will not be affected by the flatness of other parts.
[0050] Example 3
[0051] See attached Figure 7 and Figure 8 As shown, the difference between this embodiment and the above embodiment is that, in this embodiment, two limit rings 42 are provided on the outer wall of the bearing ring 41 and are respectively located at the two ends of the bearing ring 41 .
[0052] In this embodiment, the limit ring 42 is set on the outer wall of the bearing ring 41, so that the inner wall of the bearing member 4 is a ring surface without a connection gap, ensuring the smoothness of the contact plane between the bearing member 4 and the rolling member 32 and ensuring the smooth rotation of the sprocket member 1.
[0053] Example 4
[0054] See attached Figure 9 — Figure 10 As shown, the difference between this embodiment and the above embodiment is that, in this embodiment, a groove 13 corresponding to the limit ring 42 is provided on the sprocket member 1, and the depth of the groove 13 is not greater than the height of the limit ring 42, which can reduce the groove depth of the groove for installing the sprocket on the saw chain guide, and can effectively ensure the strength of the saw chain guide.
[0055] Example 5
[0056] See attached Figure 11 As shown, the difference between this embodiment and the above embodiment is that, in this embodiment, a plurality of oil filling holes 521 are provided at equal angles on the cover 52. By providing a plurality of oil filling holes 521, this embodiment can replenish lubricating oil while also dissipating heat for the rolling element 32, thereby improving the heat dissipation effect of the rotating structure 3, and further improving the heat dissipation effect of the sprocket.
[0057] Example 6
[0058] See attached picture Figure 12 and 13As shown, the difference between the embodiment and the above-mentioned embodiment is that, in the embodiment, the chain wheel member 1 is a sprocket chain wheel which is integrally processed and formed; compared with the sprocket chain wheel of the above-mentioned embodiment, the sprocket chain wheel has lower machining precision requirement and lower machining cost; it should be particularly pointed out that the sprocket chain wheel can also be provided with equally-angled partition plates.
[0059] Embodiment 7
[0060] Referring to the drawings Figure 14 As shown, the difference between the embodiment and the above-mentioned embodiment is that, in the embodiment, the chain wheel member 1 is a sprocket chain wheel which is integrally processed and formed; compared with the sprocket chain wheel of the above-mentioned embodiment, the sprocket chain wheel has lower machining precision requirement and lower machining cost; it should be particularly pointed out that the sprocket chain wheel can also be provided with equally-angled partition plates.
[0061] The above-mentioned embodiments are descriptions of the present application, not limitations of the present application, and any simple transformation of the present application also belongs to the protection scope of the present application.
Claims
1. A sprocket with an oil reservoir structure, which is arranged on a saw chain guide head, comprising a sprocket part (1), characterized in that It also comprises a rotating structure (3), a bearing (4) and an oil storage structure (5); The chain wheel (1) is provided with a through hole (2) at the center position; The rotating structure (3) is installed in the through hole (2); The bearing (4) is sleeved on the rotating structure (3); The chain wheel (1) is supported on the rotating structure (3) by the bearing (4) to rotate; The oil storage structure (5) is arranged on the bearing (4) and the rotating structure (3) to lubricate the rotating structure (3).
2. The sprocket with oil storage structure according to claim 1, characterized in that, The rotating structure (3) comprises an inner cylinder (31) at the center of the through hole (2), and a plurality of rolling elements (32) arranged around the outer wall of the inner cylinder (31), which are in contact with the bearing (4) and located in the oil storage structure (5).
3. The sprocket with oil storage structure according to claim 2, characterized in that, The height of the rolling element (32) is less than or equal to the height of the inner cylinder (31).
4. The sprocket with oil storage structure according to claim 1, characterized in that, The bearing (4) comprises a bearing ring (41) and two limiting rings (42); the two limiting rings (42) can be arranged on the outer wall of the bearing ring (41) or on the top and bottom surfaces of the bearing ring (41). The inner wall of the bearing ring (41) is in contact with the rotating structure (3); and the chain wheel (1) is located between the two bearing rings (41).
5. The sprocket with oil storage structure according to claim 3, characterized in that, The oil storage structure (5) comprises a lubricating cavity (51) formed by the outer surface of the inner cylinder (31) and the inner surface of the bearing (4).
6. The sprocket with oil storage structure according to claim 5, characterized in that, The oil storage structure (5) further comprises two covers (52) arranged on the top and bottom ends of the inner cylinder (31), respectively; and the two covers (52) are flush with the plane of the inner cylinder (31).
7. The sprocket with oil storage structure according to claim 6, characterized in that, The inner cylinder (31) is provided with a mounting groove (33) matched with the cover (52).
8. The sprocket with oil storage structure according to claim 6 or 7, characterized in that, The cover (52) is provided with an oil injection hole (521), and the number of the oil injection hole (521) is not less than one.
9. The sprocket with oil storage structure according to claim 8, characterized in that, The oil injection hole (521) is a round hole or a waist-shaped hole.
10. The sprocket with oil storage structure according to claim 1, characterized in that, The chain wheel (1) can be a toothed chain wheel or a grooved chain wheel; the chain wheel (1) in the form of a grooved chain wheel comprises a chain wheel tooth plate (11) and saw chain limiting plates (12) arranged on both sides of the chain wheel tooth plate (11).