Optimized transition flange plate on speed reducer
By setting concentric stops and drainage grooves on both sides of the reducer flange, the problems of concentricity between the motor and the reduction mechanism and water accumulation are solved, thus achieving stable operation of the equipment and compatibility with multiple specifications.
Patent Information
- Application Number
- CN202520063316.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing gearbox flanges cannot effectively guarantee the concentricity of the motor and the reduction mechanism, are prone to water accumulation leading to damage, and have limited applicability.
An optimized transition flange was designed with concentric stops on both sides to match the motor and reduction gear, and a drainage groove on the outer ring to drain accumulated water, while leaving a margin to accommodate motors of different specifications.
It improves the concentricity of the motor and reducer, reduces equipment noise and vibration, prevents water accumulation damage, and broadens the applicable range of motor specifications.
Smart Images
Figure CN223483362U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the technical field of speed reducers, and more specifically to an optimized transition flange for speed reducers. Background technology:
[0002] Speed reducers are generally used in low-speed, high-torque transmission equipment. They convert the high-speed power of a motor into low-speed power output through gear transmission within the reduction mechanism. Existing speed reducers use flanges for mounting and connecting the motor and reduction mechanism. However, existing flanges have the following problems: 1. The alignment of the motor and reduction mechanism relies mainly on the outer circle of the flange and bolt positioning, which cannot effectively guarantee concentricity. This leads to poor concentricity during use, causing significant wear and tear on the speed reducer and reducing its service life. 2. Speed reducers are often used in cooling tower systems, operating in harsh outdoor environments. Water can easily accumulate in the flange mounting holes and fail to drain effectively, seeping into the reduction mechanism and causing damage. 3. Due to size limitations, existing flanges can only match motors of the same specifications and cannot be matched with other specifications, limiting their applicability. Therefore, it is necessary to research and optimize the flange to solve the above problems. Utility Model Content:
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing an optimized transition flange for a speed reducer. The transition flange has concentric stops on both sides that can be matched with the motor and the reduction mechanism respectively, ensuring the concentricity of the speed reducer. At the same time, it can prevent water accumulation and facilitate subsequent secondary processing, and is compatible with motors of different specifications.
[0004] An optimized transition flange for a speed reducer includes an annular flange. The inner ring of the left end face of the flange is formed with an annular convex stop, and the inner ring of the right end face is formed with an annular concave stop. The convex stop is composed of a cylindrical annular outer stop wall and an outer stop end face, and the concave stop is composed of a cylindrical annular inner stop wall and an inner stop end face.
[0005] The outer ring of the flange is formed with several stepped mounting holes, which consist of countersunk holes on the right and through holes on the left. The outer ring of the flange is also formed with several drainage grooves that communicate with the countersunk holes on the mounting holes.
[0006] Several threaded holes are formed on the right end face of the flange around the recessed stop. The threaded holes do not penetrate the left end face of the flange and are distributed among the mounting holes.
[0007] Preferably, the central axis of the flange, the central axis of the convex stop, and the central axis of the concave stop are on the same straight line, and the mounting holes and threaded bottom holes are evenly distributed in a ring around the central axis of the flange.
[0008] Preferably, the inner wall of the countersunk hole on the mounting hole is conical, and the inner wall diameter on the inlet side of the countersunk hole is larger than the inner wall diameter on the bottom side of the countersunk hole.
[0009] Preferably, the drainage groove is a plurality of rectangular slots formed on the outer wall of the flange and penetrating the right end face of the flange, wherein the width of the rectangular slot is smaller than the diameter of the countersunk hole on the mounting hole.
[0010] The depth of the rectangular groove is greater than the depth of the countersunk hole, and there is a height difference between the bottom surface of the rectangular groove and the bottom surface of the countersunk hole.
[0011] Preferably, the drainage groove is an annular groove with a triangular cross-section, and the annular groove is formed on the outer ring of the right end face of the flange.
[0012] Preferably, the drainage groove is a plurality of slots formed on the outer wall of the flange, with the inner end of the slot located on the inner wall of the countersunk hole.
[0013] Preferably, the drainage groove is a plurality of openings formed on the outer ring of the right end face of the flange, and the two side walls of the openings are tangent to the inner wall of the countersunk hole.
[0014] Preferably, the diameter of the outer stop wall on the flange is larger than the diameter of the inner stop wall; the depth of the recessed stop is equal to 1 / 5 to 1 / 4 of the flange thickness.
[0015] The beneficial effects of the present invention are:
[0016] 1. This flange improves the concentricity of the motor and reducer during installation, reduces equipment noise and vibration, reduces off-center load to protect internal gears, and reduces maintenance costs.
[0017] 2. This flange can effectively drain water from the mounting holes at the reducer end, preventing water from seeping into the equipment and causing problems such as emulsification of lubricating oil in the gearbox, rusting of gears, and seizing of bearings.
[0018] 3. Sufficient allowance is provided on one side of the recessed stop on this flange to facilitate secondary processing of the flange recessed stop and to adapt to motors of different models and specifications, thus broadening the product's competitiveness. Attached image description:
[0019] Figure 1 This is a side view of the structure of this utility model;
[0020] Figure 2 for Figure 1 A schematic diagram of the rotated section at point AA;
[0021] Figure 3 This is a three-dimensional structural diagram of the present invention installed in the speed reducer;
[0022] Figure 4This is a schematic diagram of the rectangular groove drainage channel of this utility model;
[0023] Figure 5 This is a schematic diagram of the structure of the annular groove drainage channel of this utility model;
[0024] Figure 6 This is a schematic diagram of the structure of the groove drainage channel used in this utility model;
[0025] Figure 7 This is a schematic diagram of the structure of the present invention, which uses an open drainage channel.
[0026] In the diagram: 1. Flange; 11. Mounting hole; 12. Raised stop; 13. Recessed stop; 14. Drainage groove; 15. Threaded bottom hole; 2. Reduction mechanism; 3. Motor; 4. First bolt; 5. Second bolt. Detailed implementation method:
[0027] Example: See Figure 1 , 2 As shown, an optimized transition flange for a speed reducer includes an annular flange 1. The inner ring of the left end face of the flange 1 is formed with an annular convex stop 12, and the inner ring of the right end face is formed with an annular concave stop 13. The convex stop 12 is composed of a cylindrical annular outer stop wall 121 and an outer stop end face 122, and the concave stop 13 is composed of a cylindrical annular inner stop wall 131 and an inner stop end face 132.
[0028] The outer ring of the flange 1 is formed with several stepped mounting holes 11. The mounting holes 11 are composed of countersunk holes 111 on the right and through holes 112 on the left. The outer ring of the flange 1 is formed with several drainage grooves 14 that are connected to the countersunk holes 111 on the mounting holes 11.
[0029] The flange 1 around the recessed stop 13 has several threaded bottom holes 15 formed on the right end face. The threaded bottom holes 15 do not penetrate the left end face of the flange 1 and are distributed between the mounting holes 11. The depth of the recessed stop 13 is equal to 1 / 5 to 1 / 4 of the thickness of the flange 1.
[0030] This flange 1 is used on the reducer to connect the motor 3 and the reduction mechanism 2, such as Figure 3 As shown, the right end face of the flange 1 is connected to the motor 3. The second bolt 5 is inserted into the housing of the motor 3. The end of the second bolt 5 is screwed into the threaded bottom hole 15. The threaded bottom hole 15 is a blind hole, which can prevent rainwater from entering the reduction mechanism 2 through the threaded bottom hole 15. The reduction mechanism 2 is set on the left end face of the flange 1. The first bolt 4 is inserted into the mounting hole 11. The first bolt 4 extends out of the flange 1 and is screwed and fixed to the reduction mechanism 2.
[0031] The central axis of the flange 1, the central axis of the convex stop 12, and the central axis of the concave stop 13 are on the same straight line. The mounting hole 11 and the threaded bottom hole 15 are evenly distributed in a ring around the central axis of the flange 1 to ensure that the reduction mechanism 2 and the motor 3 are concentric.
[0032] The inner wall of the countersunk hole 111 in the mounting hole 11 is conical. The conical design can reduce the friction between the mold and the product surface, and reduce mold wear. The inner wall diameter on the inlet side of the countersunk hole 111 is larger than the inner wall diameter at the bottom of the countersunk hole 111.
[0033] The drainage trough 14 can have various shapes; the following shapes can be used as a reference.
[0034] like Figure 4 As shown, the drainage groove 14 is a plurality of rectangular grooves 141 formed on the outer wall of the flange 1 and penetrating the right end face of the flange 1. The groove width of the rectangular groove 141 is smaller than the diameter of the countersunk hole 111 on the mounting hole 11.
[0035] The depth of the rectangular slot 141 is greater than the depth of the countersunk hole 111. The bottom surface of the rectangular slot 141 can be designed as an inclined surface, that is, the two side walls of the rectangular slot 141 are trapezoidal, so that there is a height difference between the bottom surface of the rectangular slot 141 and the bottom surface of the countersunk hole 111, which facilitates the drainage of water that falls into the countersunk hole 111 from the rectangular slot 141.
[0036] like Figure 5 As shown, the drainage groove 14 is an annular groove 142 with a triangular cross-section. The annular groove 142 is formed on the outer ring of the right end face of the flange 1. Water that falls into the countersunk hole 111 can be discharged from the bottom surface of the annular groove 142.
[0037] like Figure 6 As shown, the drainage groove 14 is a plurality of slots 143 formed on the outer wall of the flange 1, and the inner end of the slots 143 is located on the inner wall of the countersunk hole 111.
[0038] like Figure 6 As shown, the drainage groove 14 consists of several openings 144 formed on the outer ring of the right end face of the flange 1. The two side walls of the opening 144 are tangent to the inner wall of the countersunk hole 111. Both the opening 144 and the rectangular groove 141 are groove structures, but the opening 144 and the countersunk hole 111 are integral and can be formed in one step by milling, which facilitates the processing of the mounting hole 11 and the drainage groove 14.
[0039] The diameter of the outer stop wall 121 on the flange 1 is greater than the diameter of the inner stop wall 131, which can increase the thickness of the flange 1 at the recessed stop 13 and give the recessed stop 13 a larger machining allowance.
[0040] Working principle: This structure is an optimized transition flange on the reducer, with the following three optimization points. The first point is that a convex stop 12 and a concave stop 13 are added to both sides of the flange 1 respectively. The convex stop 12 is used to cooperate with the reduction mechanism 2, and the concave stop 13 is used to cooperate with the motor 3, thereby ensuring that the reduction mechanism 2 and the motor 3 are concentric.
[0041] The second point is to open a drainage groove 14 on the outer ring of the flange 1. The drainage groove 14 is connected to the mounting hole 13, and the water accumulated in the mounting hole 13 can be drained through the drainage groove 14.
[0042] The third point is that the recessed stop 13 occupies a small volume on the flange 1, providing sufficient allowance for secondary processing to match different motors 3.
[0043] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.
Claims
1. An optimized transition flange for a speed reducer, comprising an annular flange (1), characterized in that: The flange (1) has a circular raised stop (12) formed on the inner ring of the left end face and a circular recessed stop (13) formed on the inner ring of the right end face. The raised stop (12) is composed of a cylindrical annular outer stop wall (121) and an outer stop end face (122). The recessed stop (13) is composed of a cylindrical annular inner stop wall (131) and an inner stop end face (132). The outer ring of the flange (1) is formed with several stepped mounting holes (11). The mounting holes (11) consist of a countersunk hole (111) on the right and a through hole (112) on the left. The outer ring of the flange (1) is formed with several drainage grooves (14) that are connected to the countersunk hole (111) on the mounting holes (11). The flange (1) around the recessed stop (13) has several threaded bottom holes (15) formed on the right end face of the flange (1). The threaded bottom holes (15) do not penetrate the left end face of the flange (1) and are distributed between the mounting holes (11). The depth of the recessed stop (13) is equal to 1 / 5 to 1 / 4 of the thickness of the flange 1.
2. The optimized transition flange for a speed reducer according to claim 1, characterized in that: The central axis of the flange (1), the central axis of the convex stop (12) and the central axis of the concave stop (13) are on the same straight line, and the mounting hole (11) and the threaded bottom hole (15) are evenly distributed in a ring around the central axis of the flange (1).
3. An optimized transition flange for a speed reducer according to claim 2, characterized in that: The inner wall of the countersunk hole (111) on the mounting hole (11) is conical, and the inner wall diameter on the inlet side of the countersunk hole (111) is larger than the inner wall diameter at the bottom of the countersunk hole (111).
4. An optimized transition flange for a speed reducer according to claim 3, characterized in that: The drainage groove (14) is a number of rectangular slots (141) formed on the outer wall of the flange (1) and penetrating the right end face of the flange (1). The width of the rectangular slot (141) is smaller than the diameter of the countersunk hole (111) on the mounting hole (11). The depth of the rectangular slot (141) is greater than the depth of the countersunk hole (111), and there is a height difference between the bottom surface of the rectangular slot (141) and the bottom surface of the countersunk hole (111).
5. An optimized transition flange for a speed reducer according to claim 1 or 3, characterized in that: The drainage groove (14) is an annular groove (142) with a triangular cross-section, and the annular groove (142) is formed on the outer ring of the right end face of the flange (1).
6. An optimized transition flange for a speed reducer according to claim 1 or 3, characterized in that: The drainage groove (14) is a plurality of slots (143) formed on the outer wall of the flange (1), and the inner end of the slot (143) is located on the inner wall of the countersunk hole (111).
7. An optimized transition flange for a speed reducer according to claim 1, characterized in that: The drainage groove (14) is a plurality of openings (144) formed on the outer ring of the right end face of the flange (1), and the two side walls of the openings (144) are tangent to the inner wall of the countersunk hole (111).
8. An optimized transition flange for a speed reducer according to claim 1, characterized in that: The diameter of the outer stop wall (121) on the flange (1) is larger than the diameter of the inner stop wall (131).