CN223257469U

CN223257469U - Shunt parallel operation gear box

Info

Publication number: CN223257469U
Application number: CN202422992295.7U
Authority: CN
Inventors: 何誉川; 周康; 陈传港; 汪健; 刁敏航
Original assignee: Chongqing Yong Jin Heavy Machinery Complete Equipment Co ltd
Current assignee: Chongqing Yong Jin Heavy Machinery Complete Equipment Co ltd
Priority date: 2024-12-05
Filing date: 2024-12-05
Publication date: 2025-08-22
Anticipated expiration: 2034-12-05

Abstract

The utility model provides a split parallel operation gearbox, which relates to the technical field of gearboxes and comprises a box body, wherein a high-speed shaft is rotatably arranged between two sides of the inner wall of the box body through an ultra-precise bearing, two ends of the high-speed shaft extend to the outside of the box body, two intermediate shafts are rotatably arranged on one side of the inner wall of the box body through a cylindrical roller bearing and a four-point angular contact ball bearing, and oil inlet rings are sleeved on the shaft bodies of the two intermediate shafts. According to the utility model, aiming at the selection of the rolling bearing, the ultra-precise bearing is selected for connection of the high-speed shaft, the dimensional accuracy and the running accuracy of the bearing are higher, the rigidity of the bearing can be greatly increased through the pairing use of the bearing and the rigid pre-tightening, the critical rotation speed of the rotor is ensured to meet the use requirement, and the other parts are all configured by adopting the cylindrical roller bearing and the four-point angular contact ball bearing, so that the use requirement of high rotation speed and high torque is met, the service life of each rolling bearing is greatly prolonged, and the maintenance office cost is reduced.

Description

Shunt parallel operation gear box

Technical Field

The utility model relates to the technical field of gearboxes, in particular to a split parallel operation gearbox.

Background

The double-split-flow cone parallel operation gear box adopts a double-split-flow structure because the two output shafts of the test bed are required to be on the same straight line and the use condition of high rotating speed and high torque is required to be met due to the special installation mode of the aviation test bed. In order to meet the requirement of frequent starting of an aviation test bed, rolling bearings are adopted for all bearings, the service life of the bearings is greatly reduced under the working requirement of high rotating speed and high torque of the existing gear box adopting the rolling bearings, so that the bearings are required to be replaced frequently, and the maintenance cost is increased.

Disclosure of utility model

The utility model mainly aims to provide a shunt parallel operation gearbox, which can effectively solve the problems that the service life of a bearing is greatly reduced, the bearing needs to be frequently replaced and the maintenance cost is increased under the working requirement of high rotating speed and high torque of a gearbox in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The split parallel gearbox comprises a box body, wherein a high-speed shaft is rotatably arranged between two sides of the inner wall of the box body through an ultra-precise bearing, and two ends of the high-speed shaft extend to the outside of the box body;

two intermediate shafts are rotatably arranged on one side of the inner wall of the box body by adopting a cylindrical roller bearing and a four-point angular contact ball bearing, and oil inlet rings are sleeved on the shaft bodies of the two intermediate shafts;

Two connecting shafts are rotatably arranged on the other side surface of the inner wall of the box body, and large bevel gears are arranged on the shaft bodies of the two connecting shafts;

The top in the box rotates and installs the low-speed axle, low-speed axle upper end extends to the box outside, low-speed axle shaft cover is equipped with the oil slinger.

Preferably, an oil inlet flange is arranged on one side of the box body, and an oil return flange is arranged on the other side of the box body.

Preferably, one end of each of the two connecting shafts is connected with the corresponding intermediate shaft through a torsion shaft.

Preferably, a wind shield is arranged on one side of the box body, and one end of the high-speed shaft penetrates through the wind shield.

Preferably, the large bevel gear is fixedly arranged on the shaft body of the connecting shaft through a reaming bolt 10.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the rolling bearing, the ultra-precise bearing is selected for connection, the dimensional accuracy and the running accuracy of the bearing are high, the rigidity of the bearing can be greatly increased through the pairing use of the bearing and the rigid pre-tightening, the critical rotation speed of the rotor is ensured to meet the use requirement, and the other parts of the bearing are respectively provided with the cylindrical roller bearing and the four-point angular contact ball bearing, so that the use requirement of high rotation speed and high torque is met, the service life of each rolling bearing is greatly prolonged, and the cost of a maintenance bureau is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a split parallel operation gearbox of the present utility model;

FIG. 2 is a schematic top view of a split parallel gearbox according to the present utility model;

FIG. 3 is a schematic cross-sectional view of the split parallel operation gearbox of FIG. 2 at A-A.

In the figure, 1, a high-speed shaft, 2, an ultra-precise bearing, 3, a wind shield, 4, a four-point angular contact ball bearing, 5, a cylindrical roller bearing, 6, an oil inlet ring, 7, an intermediate shaft, 8, a torsion shaft, 9, a connecting shaft, 10, a reaming hole bolt, 11, a large bevel gear, 12, a low-speed shaft, 13, an oil slinger, 14, an oil inlet flange, 15, an oil return flange, 16 and a box body.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, the embodiment of the utility model provides a split parallel operation gearbox, which comprises a box body 16, wherein a high-speed shaft 1 is rotatably arranged between two sides of the inner wall of the box body 16 through an ultra-precise bearing 2, and two ends of the high-speed shaft 1 extend to the outside of the box body 16;

Two intermediate shafts 7 are rotatably arranged on one side of the inner wall of the box body 16 by adopting a cylindrical roller bearing 5 and a four-point angular contact ball bearing 4, and oil inlet rings 6 are sleeved on the shaft bodies of the two intermediate shafts 7;

Two connecting shafts 9 are rotatably arranged on the other side surface of the inner wall of the box body 16, and large bevel gears 11 are arranged on the shaft bodies of the two connecting shafts 9;

The top in the box 16 rotates and installs low-speed axle 12, and low-speed axle 12 upper end extends to the box 16 outside, and low-speed axle 12 shaft body cover is equipped with oil slinger 13.

Aiming at the selection of the rolling bearing, the high-speed shaft 1 is connected by the ultra-precise bearing 2, the dimensional precision and the running precision of the bearing are higher, the rigidity of the bearing can be greatly increased through the pairing use of the bearing and the rigid pre-tightening, the critical rotation speed of the rotor is ensured to meet the use requirement, and the other parts are all configured by adopting the cylindrical roller bearing 5 and the four-point angular contact ball bearing 4, so that the use requirement of high rotation speed and high torque is met, the service life of each rolling bearing is greatly prolonged, and the cost of a maintenance bureau is reduced.

In another embodiment of the present utility model, an oil inlet flange 14 is disposed on one side of the tank 16, and an oil return flange 15 is disposed on the other side of the tank 16.

By arranging the oil inlet flange 14 and the oil return flange 15, pouring and discharging of lubricating oil are facilitated.

In another embodiment of the utility model, one end of two connecting shafts 9 is connected with the corresponding intermediate shaft 7 through a torsion shaft 8.

The intermediate shaft 7 and the connecting shaft 9 are connected by adopting a torsion shaft 8, and the synchronization and uniform load of gear engagement are ensured by the torsion shaft 8.

In another embodiment of the utility model, a wind deflector 3 is arranged on one side of the box 16, and one end of the high-speed shaft 1 passes through the wind deflector 3.

A wind shield 3 is arranged on the high-speed shaft 1, so that the influence of the negative pressure of the shaft end under the working condition of high rotation speed is solved.

In another embodiment of the present utility model, large bevel gear 11 is fixedly mounted to the shaft body of connecting shaft 9 by means of a reaming bolt 10.

The connecting shaft 9 and the large bevel gear 11 adopt a split structure, and are connected by adopting a reaming hole bolt 10, so that the problem of bevel gear processing under the space limitation is solved.

The working principle of the split parallel operation gearbox is as follows:

During the use, to antifriction bearing's selection type, high-speed shaft 1 selects ultraprecise bearing 2 to connect, and the dimensional accuracy and the running accuracy of bearing are higher, use through the pair of bearing and adopt rigidity pretension can increase the rigidity of bearing by a wide margin, guarantee that the critical rotation speed of rotor satisfies the operation requirement, all the other disposes of cylindrical roller bearing 5 and four-point angular contact ball bearing 4 that all adopt, satisfy the operation requirement of high rotational speed big moment of torsion to improve each antifriction bearing's life-span by a wide margin, reduced the maintenance bureau expense.

It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and not limiting of the embodiments of the present utility model, and that various other changes and modifications can be made by those skilled in the art based on the above description, and it is not intended to be exhaustive of all of the embodiments, and all obvious changes and modifications that come within the scope of the utility model are defined by the following claims.

Claims

1. The split-parallel gearbox comprises a box body (16) and is characterized in that a high-speed shaft (1) is rotatably arranged between two sides of the inner wall of the box body (16) through an ultra-precise bearing (2), and two ends of the high-speed shaft (1) extend to the outside of the box body (16);

Two intermediate shafts (7) are rotatably arranged on one side of the inner wall of the box body (16) by adopting a cylindrical roller bearing (5) and a four-point angular contact ball bearing (4), and oil inlet rings (6) are sleeved on shaft bodies of the two intermediate shafts (7);

Two connecting shafts (9) are rotatably arranged on the other side surface of the inner wall of the box body (16), and large bevel gears (11) are arranged on the shaft bodies of the two connecting shafts (9);

The top is rotated in box (16) and is installed low-speed axle (12), low-speed axle (12) upper end extends to box (16) outside, low-speed axle (12) shaft body cover is equipped with oil slinger (13).

2. The split parallel gearbox of claim 1, wherein an oil inlet flange (14) is arranged on one side of the box body (16), and an oil return flange (15) is arranged on the other side of the box body (16).

3. A shunt parallel gearbox according to claim 1 characterised in that one end of two said connecting shafts (9) is connected to the corresponding intermediate shaft (7) by means of a torsion shaft (8).

4. A split parallel gearbox according to claim 1 characterised in that a wind deflector (3) is provided on one side of the housing (16) and one end of the high speed shaft (1) passes through the wind deflector (3).

5. A shunt parallel operation gearbox according to claim 1 is characterized in that the large bevel gear (11) is fixedly arranged on the shaft body of the connecting shaft (9) through a reaming bolt (10).