CN212192015U

CN212192015U - Large-scale transmission shafting bearing installation decomposition device

Info

Publication number: CN212192015U
Application number: CN202020713813.6U
Authority: CN
Inventors: 辛明明; 刘仁伟; 许妍; 王立华; 陈红霞
Original assignee: AECC Harbin Dongan Engine Co Ltd
Current assignee: AECC Harbin Dongan Engine Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-22
Anticipated expiration: 2030-04-30

Abstract

The application provides a large-scale transmission shafting bearing installation decomposition device, the device includes base 1, load board 2, dowel steel 3, spring mandrel 4, spring 5, wherein: the base 1 comprises an upper supporting plate, a lower bottom plate and a stand column, wherein the upper supporting plate and the lower bottom plate are respectively circular planes, the stand column is arranged on the lower bottom plate, and the upper supporting plate is arranged on the stand column; the four spring mandrels 4 are connected to the lower bottom plate of the base 1 through threads; the four springs 5 respectively penetrate through the spring mandrel 4, one end face of each spring 5 leans against the lower bottom plate of the base 1, and the other end face of each spring 5 is in contact with the bearing plate 2; the bearing plate 2 passes through the four spring mandrels 4; the lower end of the dowel bar 3 is fixed on the bearing plate 2 through a nut, and the upper end of the dowel bar 3 penetrates through the upper supporting plate of the base 1.

Description

Large-scale transmission shafting bearing installation decomposition device

Technical Field

The utility model relates to the field of machinary, concretely relates to bearing installation decomposition device of large-scale transmission shafting.

Background

The transmission shaft system is one of the key components of the aviation transmission equipment, and in order to ensure the reliability of transmission, a bearing on the transmission shaft is assembled on the transmission shaft by interference fit with large interference. Generally, large-interference bearing assembly needs to use a hydraulic actuator cylinder as a press-fitting (decomposing) force output device and design a special installation decomposing device for assistance. In the design scheme of the traditional large-interference bearing installation and decomposition device, the number of movable parts of the device is large, and the manual operation amount is large in the assembly process of the device and a shaft system to be operated. The transmission shaft system of part of aviation transmission equipment has large geometric dimension and heavy dead weight, and is inconvenient to move or adjust the pose, when the device is adopted to mount and disassemble the upper bearing, the labor efficiency is low, the intensity is high, and when the device is carelessly operated, part of movable parts of the device can fall from a higher position, and the safety is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solution for the bearing installation and decomposition of a large transmission shaft system in aviation transmission equipment and providing a design scheme aiming at a bearing installation and decomposition device on the large transmission shaft system, the device has simple assembly process with a shaft system to be operated, fewer movable parts and lower weight, and reduces the labor intensity of operation; the mounting and disassembling functions of the bearing are integrated in the same device, and meanwhile, the position of static force output equipment (generally adopting a hydraulic actuator cylinder) is reasonably arranged, so that the possibility that the static force output equipment falls down from a high place is avoided, and the labor safety is improved.

The application provides a large-scale transmission shafting bearing installation decomposition device, the device includes base 1, load board 2, dowel steel 3, spring mandrel 4, spring 5, wherein:

the base 1 comprises an upper supporting plate, a lower bottom plate and a stand column, wherein the upper supporting plate and the lower bottom plate are respectively circular planes, the stand column is arranged on the lower bottom plate, and the upper supporting plate is arranged on the stand column;

the four spring mandrels 4 are connected to the lower bottom plate of the base 1 through threads;

the four springs 5 respectively penetrate through the spring mandrel 4, one end face of each spring 5 leans against the lower bottom plate of the base 1, and the other end face of each spring 5 is in contact with the bearing plate 2; the bearing plate 2 passes through the four spring mandrels 4; the lower end of the dowel bar 3 is fixed on the bearing plate 2 through a nut, and the upper end of the dowel bar 3 penetrates through the upper supporting plate of the base 1.

Optionally, four columns are arranged on the lower bottom plate of the base 1, and the upper supporting plate is arranged on the four columns.

Optionally, the device further comprises a pressure plate 6, a press-fit washer 7, an upper fastening nut 8, a protective head 14, and a hydraulic actuator cylinder 15, wherein:

the pressing plate 6 penetrates through the dowel bar 3, the lower end face of the pressing plate is in contact with a bearing to be pressed, the pressing gasket 7 penetrates through the dowel bar 3 to be in contact with the upper supporting plate of the base 1, the pressing plate 6 is tightly pressed with the upper supporting plate of the base 1 through the upper fastening nut 8, the protection head 14 is installed on the lower end face of the transmission shaft system, and the hydraulic actuator cylinder 15 is arranged between the bearing plate 2 and the protection head 14.

Optionally, a resolution ring 12, a resolution washer 13, a hydraulic ram 15, wherein:

the decomposing ring 12 comprises 4 1/4 circular rings, each 1/4 circular ring penetrates through the side surface of the dowel bar 3 and is fixed through bolts and nuts, so that the decomposing ring 12 is connected into a circular ring shape, the decomposing ring 12 and the dowel bar 3 are fixed through a decomposing washer 13 and an upper fixing nut 8, and the hydraulic actuating cylinder 15 is arranged between the lower bottom plate of the base 1 and the bearing plate 2.

Optionally, the device further comprises a gasket 9, a first lower fastening nut 10 and a second lower fastening nut 11, and the lower end of the dowel bar 3 is fixed on the bearing plate 2 through the first lower fastening nut 10 and the second lower fastening nut 11.

Optionally, a right-handed full-thread through hole is formed in the lower base plate, a right-handed thread is arranged at one end of the stand column, a left-handed thread is arranged at the other end of the stand column, a left-handed full-thread through hole is formed in the upper supporting plate, the right-handed thread end of the stand column is connected with the right-handed full-thread through hole of the lower base plate, and the left-handed thread end of the stand column is connected with the left-handed full-thread through hole.

In conclusion, a solution is provided for the bearing installation and decomposition of a large transmission shaft system in the aviation transmission equipment, and a design scheme for the bearing installation and decomposition device on the large transmission shaft system is provided, so that the device and the shaft system to be operated are simple in assembly process, few in movable parts and low in weight, and the labor intensity of operation is reduced; the mounting and disassembling functions of the bearing are integrated in the same device, and meanwhile, the position of static force output equipment (generally adopting a hydraulic actuator cylinder) is reasonably arranged, so that the possibility that the static force output equipment falls down from a high place is avoided, and the labor safety is improved.

Drawings

FIG. 1 is a schematic structural view of a device for mounting bearings according to the present application;

fig. 2 is a schematic structural diagram of a device for disassembling a bearing according to the present application.

Detailed Description

The utility model discloses a concrete technical scheme is: the main structure of the installation and disassembly device comprises: the hydraulic actuator comprises a base 1, a bearing plate 2, a dowel bar 3, a spring mandrel 4, a spring 5, a pressure plate 6, a press-fitting gasket 7, an upper fastening nut 8, a gasket 9, a first lower fastening nut 10, a second lower fastening nut 11, a decomposition ring 12, a decomposition gasket 13, a protection head 14 and a hydraulic actuator cylinder 15. When the device is used, the base 1 is fixed on the horizontal ground of a working site, the bearing plate 2, the dowel bar 3, the spring mandrel 4 and the spring 5 are assembled on the base 1, the dowel bar 3 and the bearing plate 2 are fastened through the gasket 9, the first lower fastening nut 10 and the second lower fastening nut 11, the spring 5 is used for restraining the relative positions of the bearing plate 2, the dowel bar 3 and the base 1 when the device is in a free state, the device base and related accessories are assembled and then placed on the working site, and repeated assembly is not needed during batch working. After the transmission shaft system to be operated is hoisted and installed in the base, the vulnerable part of the transmission shaft system is protected by the protective head 14, the hydraulic actuating cylinder 15 is arranged on the bearing plate 2, the pressure plate 6 is installed from the upper part of the dowel bar 3 and is fastened by the press-fitting gasket 7 and the upper fastening nut 8, and the hydraulic actuating cylinder 15 is supplied with oil and outputs axial force to complete the installation of the bearing. The bearing is disassembled by arranging a hydraulic actuating cylinder 15 between a lower bottom plate of a base 1 and a bearing plate 2, installing each part of a decomposition ring 12 (the decomposition ring 12 is divided into 4 1/4 circular rings as shown in the figure) from the side surface of a force transmission rod 3, fixing the 1/4 rings at 4 positions by bolts and nuts, connecting the decomposition rings 12 into a whole, fixing the decomposition ring 12 and the force transmission rod 3 by a decomposition washer 13 and an upper fastening nut 8, and supplying oil to the hydraulic actuating cylinder 15 to output axial force.

The operation of the device will be described in detail with reference to the accompanying drawings: as shown in figure 2, the base 1, the bearing plate 2, the dowel bar 3, the spring mandrel 4 and the spring 5 are integrally arranged on the horizontal ground of a working site after being assembled. When a bearing is installed, firstly, a transmission shaft is hoisted and installed in a base of the device, a threaded hole is processed in the upper plate of the base 1, the transmission shaft is fixed, the bearing is placed on a shaft section to be assembled, a protective head 14 is used for protecting a vulnerable part of a transmission shaft system, a hydraulic actuator cylinder 15 is placed on a bearing plate 2, a pressing plate 6 is installed from the upper part of a force transmission rod 3, a pressing gasket 7 and an upper fastening nut 8 are used for fastening, oil is supplied to the hydraulic actuator cylinder 15, the axial force output by the hydraulic actuator cylinder 15 is transmitted to the end face of the bearing through the force transmission rod 3 and the pressing plate 6, and the bearing moves downwards to achieve the purpose of pressing. When the bearing is disassembled, the hydraulic actuating cylinder 15 is arranged between the lower bottom plate of the base 1 and the bearing plate 2, each part of the disassembling ring 12 is arranged from the side surface of the dowel bar 3, the ring 1/4 at the position 4 is fixed through bolts and nuts, the disassembling ring 12 is connected into a whole, the disassembling ring 12 and the dowel bar 3 are fixed through the disassembling washer 13 and the upper fastening nut 8, the oil is supplied to the hydraulic actuating cylinder 15 to output axial force, and a frame structure consisting of the bearing plate 2, the dowel bar 3, the upper fastening nut 8, the disassembling ring 12 and the disassembling washer 13 moves upwards to complete the bearing disassembly.

Claims

1. The utility model provides a large-scale transmission shafting bearing installation decomposition device which characterized in that, the device includes base (1), load board (2), dowel steel (3), spring mandrel (4), spring (5), wherein:

the base (1) comprises an upper supporting plate, a lower bottom plate and upright columns, wherein the upper supporting plate and the lower bottom plate are respectively circular planes, the upright columns are arranged on the lower bottom plate, and the upper supporting plate is arranged on the upright columns;

the four spring mandrels (4) are connected to the lower bottom plate of the base (1) through threads;

the four springs (5) respectively penetrate through the spring mandrel (4), one end face of each spring (5) leans against the lower bottom plate of the base (1), and the other end face of each spring is in contact with the bearing plate (2); the force bearing plate (2) penetrates through the four spring mandrels (4); the lower end of the dowel bar (3) is fixed on the bearing plate (2) through a nut, and the upper end of the dowel bar (3) penetrates through the upper supporting plate of the base (1).

2. The device according to claim 1, characterized in that four columns are arranged on the lower bottom plate of the base (1) and the upper supporting plate is arranged on the four columns.

3. The device according to claim 1, characterized in that it further comprises a pressure plate (6), a press-fit washer (7), an upper fastening nut (8), a protection head (14), a hydraulic cylinder (15), wherein:

the pressure plate (6) penetrates through the dowel bar (3), the lower end face of the pressure plate is in contact with a bearing to be pressed, the press-fitting gasket (7) penetrates through the dowel bar (3) and is in contact with the upper supporting plate of the base (1), the pressure plate (6) is tightly pressed with the upper supporting plate of the base (1) through the upper fastening nut (8), the protection head (14) is installed on the lower end face of the transmission shaft system, and the hydraulic actuating cylinder (15) is arranged between the bearing plate (2) and the protection head (14).

4. Device according to claim 1, characterized by a split ring (12), a split washer (13), a hydraulic cylinder (15), wherein:

the decomposing ring (12) comprises 4 1/4 circular rings, each 1/4 circular ring penetrates through the side face of the dowel bar (3) and is fixed through bolts and nuts, the decomposing ring (12) is connected into a circular ring shape, the decomposing ring (12) and the dowel bar (3) are fixed through a decomposing washer (13) and an upper fixing nut (8), and the hydraulic actuating cylinder (15) is arranged between a lower bottom plate of the base (1) and the bearing plate (2).

5. The device according to claim 1, characterized in that the device further comprises a washer (9), a first lower fastening nut (10) and a second lower fastening nut (11), and the lower end of the dowel (3) is fixed on the bearing plate (2) through the first lower fastening nut (10) and the second lower fastening nut (11).

6. The device of claim 1, wherein the bottom plate is provided with a right-handed through hole, one end of the column is provided with a right-handed thread, the other end of the column is provided with a left-handed thread, the upper support plate is provided with a left-handed through hole, the right-handed threaded end of the column is connected with the right-handed through hole of the bottom plate, and the left-handed threaded end of the column is connected with the left-handed through hole of the upper support plate.