Gearbox

Abstract

The utility model relates to the field of gear boxes, and discloses a gear box which comprises a box body, a transmission shaft is rotatably installed in the box body through a first bearing, one side of the box body is rotatably connected with an output shaft through a plurality of second bearings, and one side of the box body is rotatably provided with an input shaft through a third bearing. The input shaft is meshed with one end of the transmission shaft through the first gear set, the other end of the transmission shaft is meshed with one end of the output shaft through the second gear set, the mechanical transmission speed reduction process can be effectively carried out through the structure, and the service life of equipment is longer.

Description

Technical Field

[0001] This utility model relates to the field of gearboxes, specifically gearboxes. Background Technology

[0002] Gearboxes are important components widely used in mechanical transmissions. Their main functions include: acceleration and deceleration (commonly known as speed change gearboxes); changing the direction of transmission, such as using two sector gears to transmit force perpendicularly to another rotating shaft; changing the transmission torque, under the same power conditions, the faster the gear rotates, the smaller the torque on the shaft, and vice versa; and clutch function, which separates the engine from the load by separating two originally meshed gears, such as a brake clutch.

[0003] Currently, in order to meet the high power requirements of mechanical transmission, gearboxes generally have a large axial dimension. The large axial dimension results in low density, which means low compactness of the gearbox. Furthermore, the large axial dimension makes the gearbox too large, which in turn increases its weight, ultimately leading to increased manufacturing costs and difficulty in disassembly and assembly. Utility Model Content

[0004] The purpose of this invention is to provide a gearbox to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gearbox, including a housing, in which a transmission shaft is rotatably mounted via a first bearing, and an output shaft is rotatably connected to one side of the housing via several second bearings. An input shaft is rotatably mounted on one side of the housing via a third bearing, and the input shaft meshes with one end of the transmission shaft via a first gear set. The other end of the transmission shaft meshes with one end of the output shaft via a second gear set.

[0006] Preferably, a corrugated washer is fitted on the outer side of the output shaft, and a flat washer is fitted on the other side of the output shaft, and the inside of the housing is filled with lubricating grease.

[0007] Preferably, a pressure plate is fixedly installed on one side of the box body by a number of screws, and a number of positioning pins are provided between the pressure plate and the box body.

[0008] Preferably, the output shaft is provided with an output shaft sleeve at the end away from the housing, and the first gear set includes a first gear and a second gear with different diameters.

[0009] Preferably, the diameter of the first gear is smaller than the diameter of the second gear, and the first gear is sleeved and fixed on the outside of the input shaft, while the second gear is sleeved and fixed on the outside of one end of the transmission shaft.

[0010] Preferably, the second gear set includes a third gear and a fourth gear with different diameters. The diameter of the third gear is smaller than that of the fourth gear, and the third gear is sleeved and fixed on the outside of the other end of the transmission shaft, while the fourth gear is sleeved and fixed on the outside of one end of the output shaft.

[0011] Compared with the prior art, the advantages of this utility model are as follows:

[0012] This invention fixes the motor output end to the input shaft, so that during motor operation, the output end drives the input shaft to rotate, the input shaft drives the first gear to rotate, and the meshing of the first and second gears drives the transmission shaft to rotate. Since the diameter of the first gear is smaller than the diameter of the second gear, the second gear drives the transmission shaft to rotate at an angular velocity lower than that of the first gear on the input shaft, achieving the first deceleration process. The transmission shaft rotates under the drive of the second gear, and the second gear set at the other end of the transmission shaft drives the output shaft to rotate. The diameter of the third gear sleeved on the outside of the transmission shaft is smaller than the diameter of the fourth gear sleeved on the outside of the output shaft. Therefore, the output shaft rotates at an angular velocity lower than that of the third gear on the outside of the transmission shaft under the drive of the fourth gear, achieving the second deceleration process. The end of the output shaft away from the housing is connected to other structures for driving, achieving a two-stage deceleration process, while increasing the output torque. The outside of the output shaft is rotatably connected to the housing through multiple corrugated washers, which improves the tensile strength of the output shaft during use, thereby increasing the service life of the overall equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a rear view schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Housing; 2. First bearing; 3. Drive shaft; 4. Output shaft; 5. Corrugated washer; 6. Second bearing; 7. Flat washer; 8. Screw; 9. Lubricating grease; 10. Input shaft; 11. Pressure plate; 12. Locating pin; 14. Nameplate; 16. Output shaft sleeve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1

[0018] Please see Figures 1-2 The gearbox shown in the figure includes a housing 1. A drive shaft 3 is rotatably mounted inside the housing 1 via a first bearing 2. An output shaft 4 is rotatably connected to one side of the housing 1 via several second bearings 6. An input shaft 10 is rotatably mounted to one side of the housing 1 via a third bearing. The input shaft 10 meshes with one end of the drive shaft 3 via a first gear set. The other end of the drive shaft 3 meshes with one end of the output shaft 4 via a second gear set.

[0019] In this embodiment, a corrugated washer 5 is fitted on the outer side of the output shaft 4, and a flat washer 7 is fitted on the other side of the output shaft 4. The housing 1 is filled with lubricating grease 9. A pressure plate 11 is fixedly installed on one side of the housing 1 by several screws 8, and several positioning pins 12 are provided between the pressure plate 11 and the housing 1. An output shaft sleeve 16 is provided at the end of the output shaft 4 away from the housing 1. The first gear set includes a first gear and a second gear with different diameters. The diameter of the first gear is smaller than the diameter of the second gear. The first gear is fitted and fixed on the outer side of the input shaft 10. The second gear is fitted and fixed on the outer side of one end of the transmission shaft 3. The second gear set includes a third gear and a fourth gear with different diameters. The diameter of the third gear is smaller than the diameter of the fourth gear. The third gear is fitted and fixed on the outer side of the other end of the transmission shaft 3. The fourth gear is fitted and fixed on the outer side of one end of the output shaft 4.

[0020] Furthermore, the motor output end is fixedly connected to the input shaft 10, so that during the motor's operation, its output end drives the input shaft 10 to rotate, the input shaft 10 drives the first gear to rotate, and the meshing of the first gear and the second gear drives the transmission shaft 3 to rotate. Since the diameter of the first gear is smaller than the diameter of the second gear, the second gear drives the transmission shaft 3 to rotate at a lower angular velocity than the first gear on the input shaft 10, achieving the first deceleration process. The transmission shaft 3 rotates under the transmission of the second gear, and through the second gear set at the other end of the transmission shaft 3, it drives the output shaft 4 to rotate, wherein the gear set sleeved on the transmission shaft... The diameter of the third gear on the outer side of the drive shaft 3 is smaller than the diameter of the fourth gear sleeved on the outer side of the output shaft 4. Therefore, the output shaft 4 rotates at a lower angular velocity than the third gear on the outer side of the drive shaft 3 under the transmission of the fourth gear, realizing the second deceleration process. The end of the output shaft 4 away from the housing 1 is connected to other structures for driving, achieving the second-stage deceleration process, while increasing the output torque. The outer side of the output shaft 4 is rotatably connected to the housing 1 through multiple corrugated washers 5, which improves the tensile strength of the output shaft 4 during use, thereby improving the service life of the overall equipment. A nameplate 14 is also fixedly installed on the surface of the housing 1.

[0021] The working principle of this utility model is as follows: The output end of the motor is fixedly connected to the input shaft 10. During motor operation, the output end drives the input shaft 10 to rotate. The input shaft 10 drives the first gear to rotate. Through the meshing of the first and second gears, the transmission shaft 3 rotates. Since the diameter of the first gear is smaller than the diameter of the second gear, the second gear drives the transmission shaft 3 to rotate at a lower angular velocity than the first gear on the input shaft 10, achieving the first deceleration process. The transmission shaft 3 rotates under the transmission of the second gear, and through the second gear set at the other end of the transmission shaft 3, it drives the output shaft 4 to rotate. The transmission shaft 4 is sleeved on... The diameter of the third gear on the outside of the drive shaft 3 is smaller than the diameter of the fourth gear sleeved on the outside of the output shaft 4. Therefore, the output shaft 4 rotates at a lower angular velocity than the third gear on the outside of the drive shaft 3 under the transmission of the fourth gear, realizing the second deceleration process. The end of the output shaft 4 away from the housing 1 is connected to other structures for driving, achieving the second-stage deceleration process, while increasing the output torque. The outside of the output shaft 4 is rotatably connected to the housing 1 through multiple corrugated washers 5, which improves the tensile strength of the output shaft 4 during use, thereby improving the service life of the overall equipment. A nameplate 14 is also fixedly installed on the surface of the housing 1.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear box comprising a box body (1), characterized in that: a transmission shaft (3) is rotatably mounted in the box body (1) by a first bearing (2), and an output shaft (4) is rotatably connected to one side of the box body (1) by a plurality of second bearings (6), an input shaft (10) is rotatably mounted on one side of the box body (1) by a third bearing, and the input shaft (10) is meshed with one end of the transmission shaft (3) by a first gear set, and the other end of the transmission shaft (3) is meshed with one end of the output shaft (4) by a second gear set.

2. The gear case of claim 1, wherein: A corrugated washer (5) is sleeved on the outside of the output shaft (4), and a flat washer (7) is sleeved on the other side of the output shaft (4), and the inside of the box body (1) is filled with lubricating grease (9).

3. The gear case of claim 2, wherein: A pressing plate (11) is fixedly installed on one side of the box body (1) by a plurality of screws (8), and a plurality of positioning pins (12) are arranged between the pressing plate (11) and the box body (1).

4. The gear case of claim 3, wherein: An output shaft sleeve (16) is arranged at the end of the output shaft (4) away from the box body (1), and the first gear set comprises first and second gears with different diameters.

5. The gear case of claim 4, wherein: The diameter of the first gear is smaller than that of the second gear, and the first gear is sleeved and fixed on the outside of the input shaft (10), and the second gear is sleeved and fixed on the outside of one end of the transmission shaft (3).

6. The gear case of claim 5, wherein: The second gear set comprises third and fourth gears with different diameters, the diameter of the third gear is smaller than that of the fourth gear, and the third gear is sleeved and fixed on the outside of the other end of the transmission shaft (3), and the fourth gear is sleeved and fixed on the outside of one end of the output shaft (4).

Images