Multi-output gearbox

Abstract

The utility model discloses a multi-output type gear box which comprises a box body (1), an input shaft (2), a first output shaft (3) and a second output shaft (4), the box body comprises an outer shell (11) and an inner supporting wall (12), the first end of the input shaft is an input end, the second end of the input shaft is an output end (24), a first bevel gear (21) is installed on the input shaft, a second bevel gear (31) is installed on the first output shaft, and the second bevel gear (31) is installed on the second output shaft. A third bevel gear (41) is installed on the second output shaft, the first bevel gear is meshed with the second bevel gear and the third bevel gear, and the included angle between the axis of the first output shaft and the axis of the input shaft and the included angle between the axis of the second output shaft and the axis of the input shaft are 20-70 degrees. Multi-shaft output in the first direction can be achieved, the structure is simple, installation is convenient and fast, transmission efficiency is high, and manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission devices, in particular to a multi-output gear box. Background Art

[0002] The gearbox usually includes a housing, a rotating shaft, gears, bearings, seals and other components, and the gears include circular gears, bevel gears, etc. However, the existing gearboxes still have the problems of complex structure, inconvenient installation and high manufacturing cost. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a multi-output gearbox which can realize multi-axis output in a first direction and has a simple structure, convenient installation, high transmission efficiency and low manufacturing cost.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A multi-output gearbox comprises a housing (1), an input shaft (2), a first output shaft (3), and a second output shaft (4), wherein both ends of the input shaft pass through the housing, and only one end of the first output shaft and the second output shaft pass through the housing, wherein the housing comprises an outer housing (11), an inner support wall (12), and a mounting angle portion (13), wherein the inner support wall is integrally formed inside the outer housing, and the mounting angle portions are arranged at a plurality of angle portions on the outer periphery of the outer housing, wherein mounting holes are arranged on the mounting angle portions; the first end of the input shaft is the input end, and the second end is the output end (24); a first bevel gear (21) is mounted on the input shaft, a second bevel gear (31) is mounted on the first output shaft, and a third bevel gear (41) is mounted on the second output shaft, wherein the first bevel gear meshes with the second bevel gear and the third bevel gear respectively, and the angle between the axis of the first output shaft and the second output shaft and the axis of the input shaft is 20-70°.

[0006] Furthermore, a first bearing (32) and a second bearing (33) are installed on the first output shaft (3) and at both ends of the second bevel gear (31); the second bearing is installed on the inner support wall (12); an adjustment gasket, an elastic retaining ring (35), and an oil seal (34) are installed in sequence on the outer side surface of the first bearing; and a plurality of threaded mounting holes (36) are provided on the outer side surface of the outer housing and at the mounting position of the first bearing.

[0007] Furthermore, a third bearing (42) and a fourth bearing are installed on the second output shaft (4) and at both ends of the third bevel gear (41); the fourth bearing is installed on the inner support wall; an adjustment gasket, an elastic retaining ring and an oil seal are also installed on the outer side of the third bearing in sequence; and a plurality of threaded mounting holes are also provided on the outer side of the outer housing and at the mounting position of the third bearing; the first output shaft and the second output shaft are symmetrically arranged about the axis of the input shaft (2).

[0008] Furthermore, the angle a between the axes of the first output shaft (3) and the second output shaft (4) is 50-110°, and the angle b between the left meshing center line and the right meshing center line of the first bevel gear (21) is 30-60°.

[0009] Furthermore, the angle a is 70-90°, and the angle b is 40-50°.

[0010] Furthermore, the outer shell (11) comprises a rectangular shell portion and an isosceles trapezoidal shell portion, the first output shaft (3) is mounted on the first waist of the isosceles trapezoidal shell portion, and the second output shaft (4) is mounted on the second waist of the isosceles trapezoidal shell portion.

[0011] Furthermore, the outer circumferential surfaces of the input end and the output end of the input shaft (2) are provided with external splines (22), and the axial middle portion of the external splines is provided with an annular recess (23).

[0012] Furthermore, the outer end of the first output shaft (3) is also provided with an external spline, and an annular recess is provided in the axial middle part of the external spline; the outer end of the second output shaft (4) is also provided with an external spline, and an annular recess is provided in the axial middle part of the external spline.

[0013] The utility model discloses a multi-output gear box, which can realize multi-axis output in a first direction and has the advantages of simple structure, convenient installation, high transmission efficiency and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the multi-output gearbox of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the multi-output gearbox of the utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the multi-output gearbox of the utility model.

[0017] In the figure: housing 1, input shaft 2, first output shaft 3, second output shaft 4, outer housing 11, inner support wall 12, mounting corner 13, first bevel gear 21, external spline 22, annular recess 23, output end 24, second bevel gear 31, first bearing 32, second bearing 33, oil seal 34, adjusting gasket and circlip 35, threaded mounting hole 36, third bevel gear 41, third bearing 42. DETAILED DESCRIPTION

[0018] In order to make the technical solution and advantages of the utility model clearer, the technical solution of the utility model will be further described in detail in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the utility model, which are only used to explain the utility model, not to limit the utility model. It should be noted that for the convenience of description, only the parts / structures related to the utility model are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the utility model and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0019] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present invention should be the common meanings understood by ordinary technicians in the field to which the present invention belongs.

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-3 As shown, a multi-output gearbox includes a housing 1, an input shaft 2, a first output shaft 3, and a second output shaft 4. Both ends of the input shaft 2 pass through the housing 1, and only one end of the first output shaft 3 and the second output shaft 4 passes through the housing 1. The housing 1 includes an outer housing 11, an inner support wall 12, and a mounting angle 13. The inner support wall 12 is integrally formed inside the outer housing 11. Multiple corners of the outer periphery of the outer housing 11 are provided with mounting angles 13, and mounting holes are provided on the mounting angles 13; the first end of the input shaft 2 is the input end, and the second end is the output end 24. A first bevel gear 21 is installed on the input shaft 2, a second bevel gear 31 is installed on the first output shaft 3, and a third bevel gear 41 is installed on the second output shaft 4. The first bevel gear 21 is meshed with the second bevel gear 31 and the third bevel gear 41 respectively, and the angle between the axis of the first output shaft 3 and the second output shaft 4 and the axis of the input shaft 2 is 20-70° (specifically 35-45°).

[0022] A first bearing 32 and a second bearing 33 are installed on the first output shaft 3 and at both ends of the second bevel gear 31. The second bearing 33 is installed on the inner support wall 12. An adjusting gasket, a circlip 35 and an oil seal 34 are installed in sequence on the outer side of the first bearing 32. A plurality of threaded mounting holes 36 are provided on the outer side of the outer shell 11 and at the installation location of the first bearing 32.

[0023] A third bearing 42 and a fourth bearing are installed on the second output shaft 4 and at both ends of the third bevel gear 41. The fourth bearing is installed on the inner support wall 12. An adjusting gasket, a retaining ring and an oil seal are also installed on the outer side of the third bearing 42 in sequence. A plurality of threaded mounting holes are also provided on the outer side of the outer shell 11 and at the installation location of the third bearing 42.

[0024] The first output shaft 3 and the second output shaft 4 are symmetrically arranged with respect to the axis of the input shaft 2 .

[0025] The angle a between the axes of the first output shaft 3 and the second output shaft 4 is 50-110°, preferably 70-90°, specifically 80°; the angle b between the left dividing line / meshing center line and the right dividing line / meshing center line of the first bevel gear 21 is 30-60°, preferably 40-50°, specifically 46°.

[0026] The outer shell 11 includes a rectangular shell portion and an isosceles trapezoidal shell portion. The first output shaft 3 is mounted on the first waist portion of the isosceles trapezoidal shell portion, and the second output shaft 4 is mounted on the second waist portion of the isosceles trapezoidal shell portion.

[0027] The outer circumferential surfaces of the input end and the output end 24 of the input shaft 2 are provided with external splines 22 , and the axial middle portion of the external splines 22 is provided with an annular recess 23 . Providing the annular recess 23 can reduce the manufacturing cost.

[0028] The outer end of the first output shaft 3 is also provided with an external spline, and an annular recess is provided in the axial middle of the external spline; the outer end of the second output shaft 4 is also provided with an external spline, and an annular recess is provided in the axial middle of the external spline.

[0029] The multi-output gearbox can be applied to mechanical equipment such as lawn mowers.

[0030] The utility model discloses a multi-output gear box, which can realize multi-axis output in a first direction and has the advantages of simple structure, convenient installation, high transmission efficiency and low manufacturing cost.

[0031] The above-mentioned implementation mode is an illustration of the present utility model, not a limitation of the present utility model. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The protection scope of the present utility model is limited by the attached claims and their equivalents.

Claims

1. A multi-output gearbox, characterized in that: The invention comprises a housing (1), an input shaft (2), a first output shaft (3) and a second output shaft (4); both ends of the input shaft pass through the housing, while only one end of the first output shaft and the second output shaft pass through the housing; the housing comprises an outer housing (11), an inner support wall (12) and a mounting angle portion (13); the inner support wall is integrally formed inside the outer housing; a plurality of corners on the outer periphery of the outer housing are provided with mounting angle portions, and mounting holes are provided on the mounting angle portions; the first end of the input shaft is the input end, and the second end is the output end (24); a first bevel gear (21) is installed on the input shaft, a second bevel gear (31) is installed on the first output shaft, and a third bevel gear (41) is installed on the second output shaft; the first bevel gear is meshed with the second bevel gear and the third bevel gear respectively; and the angles between the axes of the first output shaft and the second output shaft and the axis of the input shaft are 20-70°.

2. A multi-output gearbox as claimed in claim 1, characterized in that: A first bearing (32) and a second bearing (33) are installed on the first output shaft (3) and at both ends of the second bevel gear (31); the second bearing is installed on the inner support wall (12); an adjustment gasket, an elastic retaining ring (35) and an oil seal (34) are installed in sequence on the outer side surface of the first bearing; and a plurality of threaded mounting holes (36) are provided on the outer side surface of the outer housing and at the mounting position of the first bearing.

3. A multi-output gearbox as claimed in claim 2, characterized in that: A third bearing (42) and a fourth bearing are installed on the second output shaft (4) and at both ends of the third bevel gear (41); the fourth bearing is installed on the inner support wall; an adjustment gasket, an elastic retaining ring and an oil seal are also installed on the outer side of the third bearing in sequence; and a plurality of threaded mounting holes are also provided on the outer side of the outer housing and at the mounting position of the third bearing; the first output shaft and the second output shaft are symmetrically arranged about the axis of the input shaft (2).

4. A multi-output gearbox as claimed in claim 3, characterized in that: The angle a between the axes of the first output shaft (3) and the second output shaft (4) is 50-110°, and the angle b between the left meshing center line and the right meshing center line of the first bevel gear (21) is 30-60°.

5. A multi-output gearbox as claimed in claim 4, characterized in that: The outer shell (11) comprises a rectangular shell part and an isosceles trapezoidal shell part, the first output shaft (3) is mounted on the first waist of the isosceles trapezoidal shell part, and the second output shaft (4) is mounted on the second waist of the isosceles trapezoidal shell part.

6. A multi-output gearbox as claimed in claim 5, characterized in that: The outer circumferential surfaces of the input end and the output end of the input shaft (2) are provided with external splines (22), and the axial middle part of the external splines is provided with an annular recess (23).

7. A multi-output gearbox as claimed in claim 6, characterized in that: The outer end of the first output shaft (3) is also provided with an external spline, and an annular recess is provided in the axial middle of the external spline; the outer end of the second output shaft (4) is also provided with an external spline, and an annular recess is provided in the axial middle of the external spline.

8. A multi-output gearbox as claimed in claim 6, characterized in that: The angle a is 70-90°, and the angle b is 40-50°.

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