Transmission hub

Abstract

The utility model discloses a transmission hub which comprises a rim and a bearing connecting part, and the bearing connecting part is arranged in the rim. The spoke is provided with a spoke centripetal end and a spoke telecentric end, the spoke centripetal end and the bearing connecting part are integrally formed, and the spoke telecentric end and the rim are integrally formed; the meshing teeth and the rim are integrally formed, the meshing teeth are evenly distributed on the outer edge of the rim at equal intervals, and a gap is formed between every two adjacent meshing teeth. The reverse draft angle R1 of the meshing teeth is 1 degree, and the included angle R2 of the left face and the right face of the meshing teeth is 17 degrees. The transmission hub disclosed by the utility model has the beneficial effects that the proportion of the meshing teeth of the transmission hub and the contact matching surface of the transmission chain at least reaches 80%, so that the potential safety hazards of shaking, falling and the like caused by mismatching of the transmission chain and the transmission hub can be overcome.

Description

Technical Field

[0001] The utility model belongs to the field of transmission equipment, and in particular relates to a transmission hub. Background Art

[0002] The publication number is CN216443404U, the subject name is a utility model patent for a high-strength wheel hub for agricultural machinery vehicles, its IPC classification number is B60B3 / 04, and its technical solution discloses that "the high-strength wheel hub for agricultural machinery vehicles includes an axle connection part and a plurality of rim connection parts, a spoke is arranged between the axle connection part and the rim connection part, an axle connection hole is arranged on the axle connection part, the rim connection part and the spoke are connected in a "T" shape, rim connection holes are arranged at both ends of the rim connection part, and the axle connection part, the rim connection part and the spoke are integrally formed."

[0003] It can be seen that the above utility model patent has disclosed one of the technical solutions for the transmission hub. However, the technical solution disclosed in the above utility model patent focuses on solving the problem of low hub strength, and does not further solve the problem of how to increase the contact area ratio between the transmission hub and the transmission chain, which needs to be further improved. Utility Model Content

[0004] The utility model aims at the prior art, overcomes the above defects and provides a transmission hub.

[0005] The utility model adopts the following technical scheme, the transmission hub comprises:

[0006] A rim and a bearing connection portion, wherein the bearing connection portion is built into the rim;

[0007] A plurality of spokes, each spoke having a spoke centripetal end and a spoke distal end, the spoke centripetal end is integrally formed with the bearing connection portion, and the spoke distal end is integrally formed with the rim;

[0008] A plurality of meshing teeth, the meshing teeth are integrally formed with the rim, the meshing teeth are evenly distributed at an outer edge of the rim at equal intervals, and there is a spacing between two adjacent meshing teeth;

[0009] The reverse draft angle R1 of the meshing tooth is 1°, and the angle R2 between the left and right surfaces of the meshing tooth is 17°.

[0010] As a preferred technical solution of the above technical solutions, the bearing connecting portion is provided with a bearing main body section and bearing contraction sections located on both sides of the bearing main body section, and the bearing main body section and the bearing contraction section are integrally formed.

[0011] As a preferred technical solution of the above technical solution, the spoke is also provided with a spoke main body and a spoke peripheral portion, the spoke main body and the spoke peripheral portion are located between the spoke centripetal end and the spoke distal end, and the spoke main body is inscribed in the spoke peripheral portion.

[0012] As a preferred technical solution of the above technical solution, the transmission hub is made of ductile iron casting.

[0013] As a preferred technical solution of the above technical solution, the included angle between two adjacent meshing teeth is 20°.

[0014] For the transmission hub disclosed by the present utility model, its beneficial effect lies in that the contact and mating surface ratio between the meshing teeth of the transmission hub and the transmission chain reaches at least 80%, which helps to overcome potential safety hazards such as shaking and falling off caused by the mismatch between the transmission chain and the transmission hub. Description of the Drawings

[0015] Figure 1 is a perspective view of one perspective of this application.

[0016] Figure 2 is a perspective view of another perspective of this application.

[0017] Figure 3 is the front view of this application.

[0018] Figure 4 is the side view of this application.

[0019] Figure 5 is a sectional view along Figure 4 the AA direction in

[0020] The reference numerals include: 110 - rim; 130 - spoke; 131 - centripetal end of the spoke; 132 - centrifugal end of the spoke; 133 - main body part of the spoke; 134 - outer peripheral part of the spoke; 140 - meshing teeth; 150 - bearing connection part; 151 - bearing hole; 152 - main body section of the bearing; 153 - constriction section of the bearing. Detailed Embodiments

[0021] The present utility model discloses a transmission hub. Below, in combination with a preferred embodiment (Embodiment 1), referring to the Figures 1 to 5 drawings of

[0022] Referring to the Figures 1 to 5 , Figures 1 to 4 the transmission hubs from different perspectives are respectively shown, Figure 5 and the sectional structure of the transmission hub is shown.

[0023] Embodiment 1.

[0024] Preferably, the transmission hub includes:

[0025] The rim 110 (in a ring shape) and the bearing connection part 150, with the bearing connection part 150 built inside the rim 110; the outer peripheral edge of the rim 110 is in transmission connection (meshing with each other) with a transmission chain (not shown in the figure) through the meshing teeth 140, and at the same time the bearing connection part 150 is connected to a bearing (not shown in the figure);

[0026] A plurality of spokes 130, the spokes 130 are provided with a spoke centripetal end 131 and a spoke centrifugal end 132, the spoke centripetal end 131 is integrally formed with the bearing connection part 150, and the spoke centrifugal end 132 is integrally formed with the rim 110 (inner edge); a plurality of spokes 130 (together with the rim 110 and the bearing connection part 150) form an axially symmetric overall structure, and the outer surface of the spoke 130 is a curved surface, thereby improving the stability of the transmission hub;

[0027] A plurality of meshing teeth 140, the meshing teeth 140 are integrally formed with the outer edge of the rim 110, the meshing teeth 140 are evenly distributed at equal intervals on the outer edge of the rim 110, and there is a spacing between two adjacent meshing teeth 140 (two adjacent meshing teeth 140 do not directly contact); the angle between any two adjacent meshing teeth 140 (the angle relative to the center of the rim 110) is the same, thereby improving the evenness of the force during the transmission process and the stability of the transmission hub;

[0028] See the attached drawings Figure 5 , the reverse draft angle R1 of the left side surface of the meshing tooth 140 is 1°, and the left and right surface angle R2 of the end of the meshing tooth 140 is 17°; the contact and mating surface ratio between the meshing teeth of the transmission hub and the transmission chain reaches at least 80%, which helps to overcome safety hazards such as shaking and falling off caused by the mismatch between the transmission chain and the transmission hub.

[0029] Among them, the tooth width of the meshing tooth 140 is preferably 18.4 mm, and the tooth height of the meshing tooth 140 is preferably 23.2 mm; it enables higher load, stronger stability and better wear resistance during transmission.

[0030] Among them, the number of the meshing teeth 140 is preferably 18, and the angle between two adjacent meshing teeth 140 is preferably 20°, which is beneficial to the even distribution of force during transmission.

[0031] Among them, a bearing hole 151 is provided inside the bearing connection part 150 for connection to a bearing.

[0032] Among them, the outer diameter of the bearing hole 151 is preferably 78 mm, the diameter of the bearing hole 151 is preferably 40 mm, and the wall thickness of the bearing hole 151 is preferably 19 mm to ensure the installation strength of the bearing.

[0033] Among them, the number of the spokes 130 is preferably 3, which reduces the total weight of the transmission hub while ensuring the overall strength.

[0034] Among them, the diameter of the rim 110 is preferably 305 mm.

[0035] Among them, the drive hub is made of ductile iron (ductile iron 550-06) by casting.

[0036] Among them, the bearing connection part 150 is provided with a bearing main body section 152 and bearing shrinkage sections 153 on both sides of the bearing main body section 152, and the bearing main body section 152 and the bearing shrinkage sections 153 are integrally formed.

[0037] Among them, the spoke 130 is further provided with a spoke main body part 133 and a spoke outer peripheral part 134. The spoke main body part 133 and the spoke outer peripheral part 134 are located between the spoke centripetal end 131 and the spoke centrifugal end 132, and the spoke main body part 133 is inscribed in the spoke outer peripheral part 134; so that the spoke outer peripheral part 134 protrudes outward in an arc shape.

[0038] It is worth mentioning that the specific processes and other technical features of the ductile iron casting process involved in the patent application of the present utility model should be regarded as the prior art. The specific structures, working principles, possible control methods, and spatial arrangement methods of these technical features can be selected conventionally in the art, and should not be regarded as the invention points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0039] For those skilled in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A transmission hub, characterized in that: include: A rim and a bearing connection portion, wherein the bearing connection portion is built into the rim; A plurality of spokes, each spoke having a spoke centripetal end and a spoke distal end, the spoke centripetal end is integrally formed with the bearing connection portion, and the spoke distal end is integrally formed with the rim; A plurality of meshing teeth, the meshing teeth are integrally formed with the rim, the meshing teeth are evenly distributed at an outer edge of the rim at equal intervals, and there is a spacing between two adjacent meshing teeth; The reverse draft angle R1 of the meshing tooth is 1°, and the angle R2 between the left and right surfaces of the meshing tooth is 17°.

2. The transmission hub according to claim 1, characterized in that: The bearing connection portion is provided with a bearing main body section and bearing contraction sections located on both sides of the bearing main body section, and the bearing main body section and the bearing contraction section are integrally formed.

3. The transmission hub according to claim 1, characterized in that: The wheel spoke is also provided with a wheel spoke main body and a wheel spoke peripheral part, the wheel spoke main body and the wheel spoke peripheral part are located between the wheel spoke centripetal end and the wheel spoke distal end, and the wheel spoke main body is inscribed in the wheel spoke peripheral part.

4. The transmission hub according to claim 1, characterized in that: The drive hub is made of ductile iron casting.

5. The transmission hub according to claim 1, characterized in that: The angle between two adjacent meshing teeth is 20°.

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