Integrated transmission gear box

Abstract

The utility model discloses an integrated transmission gear box, which relates to the technical field of gear boxes and comprises a shell, a transmission shaft is rotatably connected onto the shell, transmission teeth are sleeved on the outer side of the transmission shaft, a stepped cylinder is fixedly connected onto one side of the shell, and a transmission shaft is arranged on the stepped cylinder. One end of the transmission shaft penetrates to the inner side of the shell from the stepped cylinder and is rotationally connected with the shell through a first bearing, and a positioning groove used for limiting the first bearing is formed in the position, corresponding to the stepped cylinder, in the shell; the outer side of the other end of the transmission shaft is sleeved with a second bearing, and the outer ring of the second bearing is clamped and fixed through a positioning plate and the stepped cylinder. According to the integrated transmission gear box, the transmission shaft can be independently disassembled and assembled, and the integrated transmission gear box is more convenient to assemble and maintain.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically an integrated transmission gearbox. Background Technology

[0002] As a core component of mechanical transmission systems, the positioning method of the bearings inside the gearbox directly affects transmission efficiency, operational stability, and maintenance costs. In existing technologies, gearbox bearings generally adopt a split-type clamping positioning structure, which uses two symmetrical bearing housings to axially clamp and fix the outer ring of the bearing, while using end caps or retaining rings to achieve axial limitation of the rotating shaft.

[0003] Traditional clamp-type bearing housings rely on two semi-circular housings being fastened together with bolts to form a complete positioning cavity. During assembly, the bolt preload needs to be repeatedly adjusted to balance the clamping force distribution. When the shaft needs to be replaced or the bearing needs to be repaired, the clamp housings and adjacent transmission components must be completely disassembled, which is time-consuming and can easily cause secondary damage to other components.

[0004] Therefore, it is necessary to propose an integrated transmission gearbox to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide an integrated transmission gearbox to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an integrated transmission gearbox, comprising a housing, a transmission shaft rotatably connected to the housing, transmission teeth sleeved on the outer side of the transmission shaft, a stepped cylinder fixedly connected to one side of the housing, one end of the transmission shaft penetrating through the stepped cylinder to the inner side of the housing and rotatably connected to the housing via a first bearing, a positioning groove for limiting the first bearing being provided inside the housing at a position corresponding to the stepped cylinder; a second bearing sleeved on the outer side of the other end of the transmission shaft, the outer ring of the second bearing being clamped and fixed by a positioning plate and the stepped cylinder.

[0009] Preferably, the drive shaft is a stepped shaft, and a limiting sleeve is provided on the outer side of the drive shaft. The limiting sleeve cooperates with the shoulder of the drive shaft to axially position the drive teeth. The end of the limiting sleeve away from the drive teeth abuts against the inner ring of the first bearing; the inner ring of the second bearing abuts against the shoulder of the drive shaft.

[0010] Preferably, the first bearing is interference-fitted with the positioning groove, and a washer is provided at the bottom end of the positioning groove.

[0011] Preferably, the positioning plate is fixedly connected to the stepped cylinder by bolts.

[0012] Preferably, a sealing ring is provided between the positioning plate and the stepped cylinder.

[0013] Preferably, the drive shaft includes an output shaft and an input shaft, and the drive shaft extends through the positioning plate to the outside of the housing.

[0014] Preferably, an oil seal is provided between the positioning plate and the drive shaft.

[0015] Preferably, the end of the housing is provided with an opening, and a sealing cover is fixedly connected to the opening.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides an integrated transmission gearbox, which has the following advantages:

[0018] 1. This integrated transmission gearbox, by setting positioning grooves, stepped cylinders and positioning plates, allows the transmission shaft to be disassembled and assembled independently, making its assembly and maintenance more convenient.

[0019] 2. This integrated transmission gearbox uses a stepped shaft and a limiting sleeve on its outer side. Under their combined action, the transmission gears, transmission shaft and first bearing are axially positioned, making the positioning more convenient. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0022] Figure 3 This is a front view schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Housing; 2. Transmission gear; 3. Positioning groove; 4. Limiting sleeve; 5. Transmission shaft; 6. Stepped cylinder; 7. Bolt; 8. First bearing; 9. Second bearing; 10. Sealing ring; 11. Positioning plate; 12. Oil seal; 13. Sealing cover plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-3As shown, an integrated transmission gearbox includes a housing 1, a drive shaft 5 rotatably connected to the housing 1, a drive gear 2 sleeved on the outer side of the drive shaft 5, a stepped cylinder 6 fixedly connected to one side of the housing 1, one end of the drive shaft 5 passing through the stepped cylinder 6 to the inner side of the housing 1 and rotatably connected to the housing 1 through a first bearing 8, a positioning groove 3 for limiting the first bearing 8 is provided inside the housing 1 at a position corresponding to the stepped cylinder 6; a second bearing 9 is sleeved on the outer side of the other end of the drive shaft 5, and the outer ring of the second bearing 9 is pressed and fixed on the step of the stepped cylinder 6 by a positioning plate 11.

[0026] During assembly, one end of the drive shaft 5 is inserted into the interior of the housing 1 through the stepped cylinder 6, and then the drive gear 2 and the first bearing 8 are sequentially fitted on the outer side of that end, and the first bearing 8 is positioned by the positioning groove 3; then the second bearing 9 is fitted on the outer side of the other end of the drive shaft 5, and the outer ring of the second bearing 9 is pressed and fixed on the step of the stepped cylinder 6 by the positioning plate 11.

[0027] By installing and positioning the drive shaft 5 in the above manner, each drive shaft 5 can be disassembled and installed independently, making its assembly and maintenance more convenient.

[0028] In some embodiments, in order to axially position the transmission gear 2 and the transmission shaft 5, the transmission shaft 5 is a stepped shaft, and a limiting sleeve 4 is sleeved on the outer side of the transmission shaft 5. The limiting sleeve 4 cooperates with the shoulder of the transmission shaft 5 to axially position the transmission gear 2. The end of the limiting sleeve 4 away from the transmission gear 2 abuts against the inner ring of the first bearing 8, and the inner ring of the second bearing 9 abuts against the shoulder of the transmission shaft 5.

[0029] By setting a limiting sleeve 4 between the transmission gear 2 and the inner ring of the first bearing 8, the transmission gear 2 can be positioned at the shaft shoulder under the action of the limiting sleeve 4, and the first bearing 8 can be axially positioned in the positioning groove 3; in addition, with the cooperation of the second bearing 9, the transmission shaft 5 can be axially positioned. Preferably, the transmission gear 2, the first bearing 8 and the second bearing 9 are all keyed to the transmission shaft 5.

[0030] To ensure the stability of the rotation of the drive shaft 5, the first bearing 8 is interference-fitted with the positioning groove 3. A washer is provided at the bottom of the positioning groove 3. The washer acts on the outer ring of the first bearing 8 to limit the rotation of the first bearing 8 and prevent the inner ring of the first bearing 8 from contacting the inner wall of the housing 1, thus affecting the rotation of the first bearing 8.

[0031] Specifically, the positioning plate 11 is fixedly connected to the stepped cylinder 6 by bolts 7, and a sealing ring 10 is provided between the positioning plate 11 and the stepped cylinder 6. By setting the sealing ring 10, leakage of lubricating oil inside the housing 1 is prevented.

[0032] In some embodiments, the drive shaft 5 includes an output shaft and an input shaft. One end of both the output shaft and the input shaft passes through the positioning plate 11 to the outside of the housing 1. An oil seal 12 is provided between the positioning plate 11 and the drive shaft 5. By providing the oil seal 12, leakage of lubricating oil inside the housing 1 is prevented.

[0033] For ease of installation and maintenance, the end of the housing 1 is provided with an opening, and a sealing cover plate 13 is fixedly connected to the opening.

[0034] 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. An integrated transmission gearbox, comprising a housing (1), wherein a transmission shaft (5) is rotatably connected to the housing (1), and transmission teeth (2) are sleeved on the outer side of the transmission shaft (5), characterized in that: A stepped cylinder (6) is fixedly connected to one side of the housing (1). One end of the drive shaft (5) passes through the stepped cylinder (6) to the inside of the housing (1) and is rotatably connected to the housing (1) through the first bearing (8). The housing (1) is provided with a positioning groove (3) for limiting the first bearing (8) at the position corresponding to the stepped cylinder (6). A second bearing (9) is sleeved on the outer side of the other end of the drive shaft (5). The outer ring of the second bearing (9) is clamped and fixed by the positioning plate (11) and the stepped cylinder (6).

2. The integrated transmission gearbox according to claim 1, characterized in that: The drive shaft (5) is a stepped shaft. A limiting sleeve (4) is fitted on the outer side of the drive shaft (5). The limiting sleeve (4) cooperates with the shoulder of the drive shaft (5) to position the drive gear (2) axially. The end of the limiting sleeve (4) away from the drive gear (2) abuts against the inner ring of the first bearing (8); the inner ring of the second bearing (9) abuts against the shoulder of the drive shaft (5).

3. The integrated transmission gearbox according to claim 1, characterized in that: The first bearing (8) is interference-fitted with the positioning groove (3), and a washer is provided at the bottom end of the positioning groove (3).

4. The integrated transmission gearbox according to claim 1, characterized in that: The positioning plate (11) is fixedly connected to the stepped cylinder (6) by bolts (7).

5. The integrated transmission gearbox according to claim 1, characterized in that: A sealing ring (10) is provided between the positioning plate (11) and the stepped cylinder (6).

6. The integrated transmission gearbox according to claim 1, characterized in that: The drive shaft (5) includes an output shaft and an input shaft, and the drive shaft (5) extends through the positioning plate (11) to the outside of the housing (1).

7. The integrated transmission gearbox according to claim 6, characterized in that: An oil seal (12) is provided between the positioning plate (11) and the drive shaft (5).

8. The integrated transmission gearbox according to claim 1, characterized in that: The end of the housing (1) is provided with an opening, and a sealing cover plate (13) is fixedly connected to the opening.

Images