Gear and gear ring structure
By designing the split gear structure, allowing only the tooth part to be replaced, the cost increase caused by overall replacement in the prior art is solved, and lower overhaul costs and longer equipment service life is achieved.
Patent Information
- Application Number
- CN202421927097.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Existing gears and ring gears need to be replaced as a whole after wear, resulting in increased costs, and wear is usually limited to the position of the teeth.
A split gear structure is designed, including an external toothed ring and a connecting plate, which is connected by a fastener, and the external toothed ring can be replaced independently, and the toothed portion is replaced only when the teeth are worn.
By replacing only the teeth, the maintenance cost is reduced, unnecessary overall replacement is avoided, and the service life of the equipment is improved.
Smart Images
Figure CN223019328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transmission structures, in particular to a gear and a ring gear structure. Background Art
[0002] Gears and ring gears are common transmission components that use the meshing between teeth for transmission. Therefore, during the transmission process, continuous friction and high-speed rotation will cause wear between the teeth, thereby reducing their service life. Currently, the common method in equipment maintenance is to replace the entire gear and ring gear. However, both the gear and the ring gear are integrated and can only be replaced as a whole, while the worn part is usually only the position of the teeth, and the overall replacement leads to an increase in cost. Summary of the Utility Model
[0003] In view of the problems existing in the background art, the utility model proposes a gear and a ring gear structure in which only the tooth part can be replaced after the teeth are worn.
[0004] In a first aspect, the utility model provides a gear, including an outer tooth ring and a connecting disk. The connecting disk is used to connect a driving shaft. The inner circumferential side of the outer tooth ring has an annular flange. The connecting disk is connected to the annular flange through a first fastener and a second fastener.
[0005] The first fastener is hollow. The cavity and the outer circumferential side of the first fastener are respectively provided with internal threads and external threads. The first fastener is connected to the second fastener through the external threads, and the second fastener is connected to the internal threads of the first fastener to lock and fix the annular flange and the connecting disk.
[0006] Optionally, the surface of the second fastener is distributed with first threaded holes along its circumferential axis. The upper surface of the annular flange is distributed with counterbored holes along its axial direction. At least a part of the first fastener penetrates through the counterbored holes and is connected to the first threaded holes through the external threads. At least a part of the second fastener is located in the first threaded holes and is connected to the external threads of the first fastener.
[0007] Optionally, the middle part of the outer tooth ring has a through hole.
[0008] Optionally, the radius of the annular flange is greater than the radius of the connecting disk, and at least a part of the annular flange coincides with the connecting disk.
[0009] In a second aspect, the utility model provides a ring gear structure, including the gear described in the first aspect, and further including a ring body, an inner tooth ring, and a cover ring. The gear meshes with the inner tooth ring. The outer circumferential side of the inner tooth ring is provided with protrusions. The inner tooth ring is snap-fitted to the ring body through the protrusions. The inner tooth ring and the ring body are coaxially arranged. The cover ring is fixed to the surface of the ring body through a third fastener to prevent the inner tooth ring from separating from the ring body.
[0010] Optionally, the surface of the ring body has a groove for inserting the protrusion, and the groove is adapted to the shape of the protrusion.
[0011] Optionally, the surface of the ring body is provided with a second threaded hole, the cover ring has a jack, and the third fastener passes through the through hole and is threadedly connected to the second threaded hole to fix the cover ring. When the cover ring is fixed, the groove and the protrusion are covered.
[0012] Optionally, the thickness of the protrusion matches that of the groove. When the cover ring is fixed, the protrusion contacts the surface of the cover ring.
[0013] Compared with the prior art, the utility model has the following beneficial technical effects:
[0014] In the utility model, by changing the gear from an integral type to a split type, when the teeth of the gear are worn, only the part with teeth needs to be replaced, thereby reducing the replacement cost. Specifically, a through hole is provided in the middle of the external tooth ring, so that the external tooth ring serves as a consumable part. During replacement, only the external tooth ring needs to be replaced, thus greatly reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The structural schematic diagram of the gear in the embodiment of the utility model is given;
[0016] Figure 2 is Figure 1 the cross-sectional view taken along the A-A direction in
[0017] Figure 3 is Figure 2 the partial enlarged view at B in
[0018] Figure 4 the structural schematic diagram of the tooth ring in the embodiment of the utility model;
[0019] Figure 5 the structural schematic diagram of the ring body in the embodiment of the utility model;
[0020] Figure 6 the structural schematic diagram of the tooth ring after removing the cover ring in the embodiment of the utility model;
[0021] Reference numerals: 100 is the gear; 110 is the external tooth ring; 111 is the annular flange; 112 is the counterbore; 120 is the first fastener; 130 is the connecting plate; 131 is the driving shaft; 132 is the first threaded hole; 140 is the second fastener; 200 is the tooth ring structure; 210 is the internal tooth ring; 211 is the protrusion; 220 is the ring body; 221 is the groove; 222 is the second threaded hole; 230 is the cover ring; 240 is the third fastener. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "inner", "outer", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0024] As Figures 1 to 3 shown, an embodiment of the present utility model provides a gear 100, which includes an outer tooth ring 110 and a connection disk 130. The connection disk 130 is used to connect a drive shaft 131. The inner circumferential side of the outer tooth ring 110 has an annular flange 111. The connection disk 130 is connected to the annular flange 111 through a first fastener 120 and a second fastener 140.
[0025] The first fastener 120 is hollow. The cavity and the outer circumferential side of the first fastener 120 are respectively provided with internal threads and external threads. The first fastener 120 is connected to the second fastener 140 through the external threads, and the second fastener 140 is connected to the internal threads of the first fastener 120, so as to lock and fix the annular flange 111 and the connection disk 130.
[0026] By changing the gear from an integral type to a split type, when the teeth of the gear are worn, only the part with teeth needs to be replaced, thereby reducing the replacement cost. Specifically, a through hole is provided in the middle of the outer tooth ring 110, so that the outer tooth ring 110 serves as a consumable part. When replacing, only the outer tooth ring 110 needs to be replaced. Further, the annular flange 111 and the connection disk 130 are connected through the second fastener 140 and the first fastener 120 to fix the outer tooth ring 110. It should be noted that in traditional gears, the outer tooth ring 110 and the connection disk 130 are usually cast as an integral part, resulting in the replacement of the entire gear.
[0027] Further, first threaded holes 132 are distributed along the circumferential axis of the surface of the second fastener 140, counterbored holes 112 are distributed along the axial direction of the upper surface of the annular flange 111, at least a part of the first fastener 120 penetrates through the counterbored holes 112 and is connected to the first threaded holes 132 through external threads, and at least a part of the second fastener 140 is located within the first threaded holes 132 and is connected to the external threads of the first fastener 120.
[0028] The radius of the annular flange 111 is greater than the radius of the connection disk 130, and at least a part of the annular flange 111 coincides with the connection disk 130.
[0029] By inserting the first fastener 120 into the counterbored holes 112 and connecting it to the first threaded holes 132 of the connection disk 130, the connection between the connection disk 130 and the annular flange 111 is realized. Then, through the connection between the second fastener 140 and the internal threads of the first fastener 120, the connection strength between the annular flange 111 and the connection disk 130 is further improved. After the gear is worn or damaged, by removing the second fastener 140 and the first fastener 120, the external gear ring 110 can be separated from the connection disk 130, so that only the external gear ring 110 needs to be replaced, reducing the maintenance cost.
[0030] In a second aspect, as Figures 4 to 6 shown, an embodiment of the present utility model provides a gear ring structure 200, including the above-mentioned gear 100, and further including a ring body 220, an internal gear ring 210, and a cover ring 230. The gear meshes with the internal gear ring 210. A protrusion 211 is provided on the outer peripheral side of the internal gear ring 210. The internal gear ring 210 is snap-fitted to the ring body 220 through the protrusion 211, and the internal gear ring 210 is coaxially arranged with the ring body 220. The cover ring 230 is fixed to the surface of the ring body 220 through a third fastener 240 to prevent the internal gear ring 210 from separating from the ring body 220.
[0031] The cover ring 230 is fixed to the ring body 220 through the third fastener 240 to prevent the internal gear ring 210 from detaching. When replacing the worn internal gear ring 210, by removing the third fastener 240, the ring body 220 and the cover ring 230 are separated, so that the internal gear ring 210 can be replaced, thereby reducing the maintenance cost.
[0032] Further, a groove 221 for inserting the protrusion 211 is provided on the surface of the ring body 220, and the groove 221 is adapted to the shape of the protrusion 211. Through the cooperation of the protrusion 211 and the groove 221, the internal gear ring 210 can rotate synchronously with the ring body 220.
[0033] Furthermore, the surface of the ring body 220 is provided with second threaded holes 222. The cover ring 230 has insertion holes. The third fastener 240 passes through the through holes and is threadedly connected to the second threaded holes 222 to fix the cover ring 230. After the cover ring 230 is fixed, the groove body 221 and the protrusion 211 are covered. The thickness of the protrusion 211 matches that of the groove body 221. After the cover ring 230 is fixed, the protrusion 211 contacts the surface of the cover ring 230.
[0034] The third fastener 240 passes through the through holes and is threadedly connected to the second threaded holes 222 to fix the protrusion 211 and prevent it from detaching from the protrusion 211. Since the thickness of the protrusion 211 matches that of the groove body 221, after the cover ring 230 is fixed, the protrusion 211 can be completely limited in position to prevent the internal gear ring 210 from shifting.
[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] The above specific embodiments are merely one or several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A gear, characterized in that: It comprises an outer gear ring and a connecting plate, wherein the connecting plate is used to connect the drive shaft, the inner circumference of the outer gear ring has an annular flange, and the connecting plate is connected to the annular flange through a first fastener and a second fastener; The first fastener is hollow, and the cavity and the outer peripheral side of the first fastener are respectively provided with internal threads and external threads. The first fastener is connected to the second fastener via the external threads, and the second fastener is connected to the internal threads of the first fastener, so that the annular flange is locked and fixed to the connecting disk.
2. A gear according to claim 1, characterized in that: The surface of the second fastener is provided with first threaded holes along its circumferential axis, the upper surface of the annular flange is provided with countersunk holes along its axial direction, at least a portion of the first fastener passes through the countersunk holes and is connected to the first threaded hole through an external thread, and at least a portion of the second fastener is located in the first threaded hole and is connected to the external thread of the first fastener.
3. A gear according to claim 1, characterized in that: The outer gear ring has a through hole in the middle.
4. A gear according to claim 1, characterized in that: The radius of the annular flange is greater than the radius of the connecting disk, and at least a portion of the annular flange overlaps with the connecting disk.
5. A gear ring structure, characterized in that: The gear comprises the gear as claimed in any one of claims 1 to 4, and further comprises a ring body, an inner gear ring and a cover ring, wherein the gear is meshed with the inner gear ring, a protrusion is provided on the outer circumference of the inner gear ring, the inner gear ring is engaged with the inner gear ring via the protrusion, and the inner gear ring is coaxially arranged with the ring body, and the cover ring is fixed to the surface of the ring body by a third fastener to limit the separation of the inner gear ring from the ring body.
6. A gear ring structure according to claim 5, characterized in that: The surface of the ring body is provided with a groove for the protrusion to be inserted, and the groove is adapted to the shape of the protrusion.
7. A gear ring structure according to claim 6, characterized in that: The surface of the ring body is provided with a second threaded hole, the cover ring is provided with an insertion hole, the third fastener passes through the through hole and is threadedly connected with the second threaded hole to fix the cover ring, and when the cover ring is fixed, it covers the groove body and the protrusion.
8. The gear ring structure according to claim 6, characterized in that: The protrusion matches the thickness of the groove body, and when the cover ring is fixed, the protrusion contacts the surface of the cover ring.