Simple gearbox

Abstract

The utility model discloses a simple gear box, which comprises a box body (1), a large gear (2), a gear shaft (3), a first bearing (4), a second bearing (5), a third bearing (6) and an oil seal (7), and is characterized in that the box body comprises an outer shell, a first barrel part (11) and a second barrel part (12), the first barrel part and the second barrel part are vertically arranged, the gear shaft is arranged in the first barrel part, and the third bearing (6) is arranged in the second barrel part. The first barrel part is arranged in the outer shell, the first end of the second barrel part is located in the outer shell, the second end of the second barrel part extends out of the outer shell, a second conical tooth part (31) is arranged on the gear shaft, a first conical tooth part (21) is arranged on the large gear, and a first bearing is installed between the outer circumferential face of the second barrel part and the inner circumferential face of the large gear. The bidirectional power output device can realize bidirectional power output, and is simple in structure, convenient and fast to install, capable of realizing multidirectional installation, high in transmission efficiency and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission devices, and particularly relates to a simple gearbox. Background Art

[0002] A gearbox generally includes components such as a box body, a rotating shaft, gears, etc. The gears include spur gears, bevel gears, etc. However, the existing gearboxes still have problems of relatively complex structure, inconvenient installation, and high manufacturing cost. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a simple gearbox which can achieve bidirectional power output, has a simple structure, is convenient for installation, can be installed in multiple directions, has high transmission efficiency, and low manufacturing cost.

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

[0005] A simple gearbox includes a box body (1), a large gear (2), a gear shaft (3), a first bearing (4), a second bearing (5), a third bearing (6), and an oil seal (7). It is characterized in that: the box body includes an outer shell, a first cylindrical part (11), and a second cylindrical part (12). The first cylindrical part is perpendicular to the second cylindrical part. The gear shaft is installed in the first cylindrical part, and the first cylindrical part is arranged inside the outer shell. The first end of the second cylindrical part is inside the outer shell and the second end extends out of the outer shell. A second conical tooth part (31) is arranged on the gear shaft, and a first conical tooth part (21) is arranged on the large gear. The first conical tooth part meshes with the second conical tooth part for transmission. A first bearing is installed between the outer peripheral surface of the second cylindrical part and the inner peripheral surface of the large gear. The first bearing is one or two. Second bearings and third bearings are respectively installed between the outer peripheral surfaces at both ends of the gear shaft and the outer shell. An oil seal is installed on the inner side surface of the third bearing. An oil seal is also installed between the first conical tooth part and the second cylindrical part.

[0006] Further, the second end of the second cylindrical part (12) is connected to the power output end of the driving mechanism, and both ends of the gear shaft (3) extending out of the outer shell are respectively the power output ends of the gearbox.

[0007] Further, the second cylindrical part (12) includes a flat part (13), a first mounting hole (14), and a communication cavity (15). The outer peripheral surface at the first end of the second cylindrical part is provided with a flat part. A first mounting hole is opened on the flat part. The two flat parts are symmetrically arranged. The first mounting hole is one or two. The first mounting hole is a through hole. A communication cavity is formed inside the second cylindrical part. The communication cavity communicates with the gear shaft. The cross-section of the second cylindrical part is in the shape of an elliptical track.

[0008] Further, second mounting holes (16) and third mounting holes (17) are provided on the outer casing. The four second mounting holes are through holes, and are respectively arranged at the four corners of the outer casing. The multiple arrayed third mounting holes are threaded holes, and the arrayed third mounting holes on the upper and lower side surfaces of the outer casing are symmetrically arranged.

[0009] Further, a fourth mounting hole (22) is provided on the outer end face of the large gear (2). The multiple fourth mounting holes are circumferentially distributed, and the fourth mounting holes are threaded holes.

[0010] Further, a keyway (32) and a connection hole (33) are provided at the outer end of the gear shaft (3). The connection hole is a through hole, and the axis of the connection hole is perpendicular to the midline of the keyway.

[0011] Further, a marking line (18) is provided on the front side face of the outer casing, and a marking line is also provided on the large gear (2). During installation, the marking lines are aligned with the midline of the keyway (32), the marking lines are perpendicular to the flat portion (13), the marking line (18) is aligned with the axis of the first mounting hole (14), and the marking line on the outer casing is aligned with the marking line on the large gear.

[0012] Further, the first bearing (4), the second bearing (5), and the third bearing (6) are ball bearings, and an adjusting gasket (41) and a shaft circlip (42) are installed on the outer side face of the first bearing.

[0013] A simple gearbox of the present utility model can achieve bidirectional power output, has a simple structure, is convenient to install, can be installed in multiple directions, has high transmission efficiency, and low manufacturing cost. Description of the Drawings

[0014] Figure 1 is a schematic cross-sectional structure diagram of the simple gearbox of the present utility model;

[0015] Figure 2 is a schematic three-dimensional structure diagram of the simple gearbox of the present utility model;

[0016] Figure 3 is a schematic structure diagram of the large gear and the gear shaft of the present utility model;

[0017] Figure 4 is a schematic structure diagram of the box body of the present utility model;

[0018] Figure 5 is a schematic structure diagram of the projection plane of the simple gearbox of the present utility model.

[0019] In the figure: housing 1, large gear 2, gear shaft 3, first bearing 4, second bearing 5, third bearing 6, packing seal / oil seal 7, first cylindrical part 11, second cylindrical part 12, flat part 13, first mounting hole 14, communication cavity 15, second mounting hole 16, third mounting hole 17, marking line 18, first conical tooth part 21, fourth mounting hole 22, second conical tooth part 31, keyway 32, connection hole 33, adjusting shim 41, shaft snap ring 42. Detailed implementation manners

[0020] To make the technical solutions and their advantages of the present utility model clearer, the technical solutions of the present utility model will be further described clearly and completely in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only partial embodiments of the present utility model, which are only used to explain the present utility model and not to limit the present utility model. It should be noted that for the convenience of description, only the parts / structures related to the present utility model are shown in the drawings, and other related parts can refer to the general design. Without conflict, the embodiments and the technical features in the embodiments of the present utility model can be combined with each other to obtain new embodiments.

[0021] Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present utility model shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs.

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] As Figures 1-5 shown, a simple gearbox includes a housing 1, a large gear 2, a gear shaft 3, a first bearing 4, a second bearing 5, a third bearing 6, and a packing seal / oil seal 7. It is characterized in that: the housing 1 includes an outer housing, a first cylindrical part 11, and a second cylindrical part 12. The first cylindrical part 11 is perpendicular to the second cylindrical part 12. The gear shaft 3 is installed in the first cylindrical part 11, and the first cylindrical part 11 is arranged inside the outer housing. The first end of the second cylindrical part 12 is inside the outer housing and the second end extends out of the outer housing. A second conical tooth part 31 is provided on the gear shaft 3, and a first conical tooth part 21 is provided on the large gear 2. The first conical tooth part 21 meshes and drives with the second conical tooth part 31. A first bearing 4 is installed between the outer peripheral surface of the second cylindrical part 12 and the inner peripheral surface of the large gear 2. The first bearing 4 is one or two. Second bearings 5 and third bearings 6 are respectively installed between the outer peripheral surfaces at both ends of the gear shaft 3 and the outer housing. An oil seal 7 is installed on the inner side surface of the third bearing 6, and an oil seal 7 is also installed between the first conical tooth part 21 and the second cylindrical part 12.

[0024] The second end of the second cylinder part 12 is connected to the power output end of the driving mechanism, and both ends of the gear shaft 3 extending out of the housing are respectively the power output ends of the gearbox.

[0025] The second cylinder part 12 includes a flat part 13, a first mounting hole 14, and a communication cavity 15. The outer peripheral surface of the first end of the second cylinder part 12 is provided with the flat part 13, and the first mounting hole 14 is opened on the flat part 13. The two flat parts 13 are symmetrically arranged. The first mounting hole 14 is one or two, and the first mounting hole 14 is a through hole. A communication cavity 15 is formed inside the second cylinder part 12, and the communication cavity 15 communicates with the gear shaft 3. The cross section of the second cylinder part 12 is in the shape of an elliptical track.

[0026] The housing is provided with second mounting holes 16 and third mounting holes 17. The four second mounting holes 16 are through holes, and the four second mounting holes 16 are respectively arranged at the four corners of the housing. The multiple arrayed third mounting holes 17 are threaded holes, and the arrayed third mounting holes 17 on the upper and lower side surfaces of the housing are symmetrically arranged.

[0027] The outer end face of the large gear 2 is provided with fourth mounting holes 22, and the multiple fourth mounting holes 22 are distributed circumferentially. The fourth mounting holes 22 are threaded holes.

[0028] The outer end of the gear shaft 3 is provided with a keyway 32 and a connection hole 33. The connection hole 33 is a through hole, and the axis of the connection hole 33 is perpendicular to the midline of the keyway 32.

[0029] The front side surface of the housing is provided with a marking line 18, and the large gear 2 is also provided with a marking line 18. During installation / assembly / fitting, the marking line 18 is aligned with the midline of the keyway 32, the marking line 18 is perpendicular to the flat part 13, the marking line 18 is aligned with the axis of the first mounting hole 14, and the marking line 18 on the housing is aligned with the marking line 18 on the large gear 2.

[0030] The first bearing 4, the second bearing 5, and the third bearing 6 are ball bearings, and an adjusting gasket 41 and a shaft retaining ring 42 are installed on the outer side surface of the first bearing 4.

[0031] Lubricating grease is added to the inner cavity of the gearbox.

[0032] A simple type of gearbox of the present utility model can achieve bidirectional power output, has a simple structure, is convenient to install, can be installed in multiple directions, has high transmission efficiency, and low manufacturing cost.

[0033] The above embodiments are descriptions of the present utility model, not limitations to 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 defined by the appended claims and their equivalents.

Claims

1. A simple gearbox, comprising a housing (1), a large gear (2), a gear shaft (3), a first bearing (4), a second bearing (5), a third bearing (6), and an oil seal (7), characterized in that: The housing comprises an outer housing, a first cylindrical portion (11), and a second cylindrical portion (12). The first cylindrical portion and the second cylindrical portion are arranged vertically. The gear shaft is installed in the first cylindrical portion, and the first cylindrical portion is arranged inside the outer housing. The first end of the second cylindrical portion is located inside the outer housing and the second end extends out of the outer housing. The gear shaft is provided with a second conical tooth portion (31), and the large gear is provided with a first conical tooth portion (21). The first conical tooth portion and the second conical tooth portion are meshed for transmission. A first bearing is installed between the outer circumference of the second cylindrical portion and the inner circumference of the large gear. The first bearing is one or two. A second bearing and a third bearing are respectively installed between the outer circumference of both ends of the gear shaft and the outer housing. An oil seal is installed on the inner side of the third bearing, and an oil seal is also installed between the first conical tooth portion and the second cylindrical portion.

2. A simple gearbox as claimed in claim 1, characterized in that: The second end of the second cylindrical portion (12) is connected to the power output end of the driving mechanism, and the two ends of the gear shaft (3) extending out of the outer shell are respectively the power output ends of the gear box.

3. A simple gearbox as claimed in claim 2, characterized in that: The second cylindrical portion (12) comprises a flat portion (13), a first mounting hole (14), and a connecting cavity (15). The outer peripheral surface of the first end of the second cylindrical portion is provided with a flat portion, and the first mounting hole is opened on the flat portion. The two flat portions are symmetrically arranged. There are one or two first mounting holes, and the first mounting holes are through holes. A connecting cavity is formed in the second cylindrical portion, and the connecting cavity is connected to the gear shaft. The cross-section of the second cylindrical portion is in the shape of an elliptical track.

4. A simple gearbox as claimed in claim 3, characterized in that: The outer shell is provided with a second mounting hole (16) and a third mounting hole (17); the four second mounting holes are through holes, and the four second mounting holes are respectively arranged at the four corners of the outer shell; the plurality of array-type third mounting holes are threaded holes, and the array-type third mounting holes on the upper and lower sides of the outer shell are symmetrically arranged.

5. A simple gearbox as claimed in claim 4, characterized in that: The outer end surface of the large gear (2) is provided with a fourth mounting hole (22), a plurality of fourth mounting holes are distributed along the circumferential direction, and the fourth mounting holes are threaded holes.

6. A simple gearbox as claimed in claim 5, characterized in that: The outer end of the gear shaft (3) is provided with a keyway (32) and a connecting hole (33); the connecting hole is a through hole, and the axis of the connecting hole is perpendicular to the center line of the keyway.

7. A simple gearbox as claimed in claim 6, characterized in that: The front side surface of the outer shell is provided with a marking line (18), and the large gear (2) is also provided with a marking line. During installation, the marking line is aligned with the center line of the keyway (32), the marking line is perpendicular to the flat portion (13), the marking line (18) is aligned with the axis of the first mounting hole (14), and the marking line on the outer shell is aligned with the marking line on the large gear.

8. A simple gearbox as claimed in claim 6, characterized in that: The first bearing (4), the second bearing (5) and the third bearing (6) are ball bearings, and an adjustment gasket (41) and a shaft elastic retaining ring (42) are installed on the outer side surface of the first bearing.

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