A hollow floating rotary support device

Abstract

A hollow floating rotary support device relates to a rotary support device, specifically a hollow floating rotary support device. The present invention aims to solve the problems that the rotary support device used in the existing transmission system cannot meet the requirements of specific experimental functions, and is complex to disassemble and assemble, with poor scalability. The present invention includes a drum-shaped gear shaft, a connecting shaft, an end-face gear coupling, a torsion meter adapter ring assembly, a bearing housing assembly, and four servo hydraulic cylinder assemblies. The drum-shaped gear shaft, the connecting shaft, and the end-face gear coupling are connected in sequence from top to bottom. The torsion meter adapter ring assembly is installed at the upper end of the drum-shaped gear shaft. The bearing assembly is sleeved on the connecting shaft. The four servo hydraulic cylinder assemblies are evenly distributed along the circumferential direction on the bearing assembly. The present invention belongs to the field of machinery.

Description

Technical Field

[0001] The present invention relates to a rotary support device, specifically to a hollow floating rotary support device, belonging to the mechanical field. Background Art

[0002] With the improvement of the R & D level of power plant equipment in China, the transmission system test technology has been deeply applied. With the modification and upgrade of test products such as helicopter main reducers, such as the sleeve shaft structure of the inner and outer rotor shafts at the output end of the main reducer, more functional requirements and higher performance requirements are put forward for the transmission system comprehensive tester. The rotary support device used in the existing transmission system cannot meet the specific experimental function requirements, and is complex to disassemble and assemble and has poor scalability. Summary of the Invention

[0003] In order to solve the problems that the rotary support device used in the existing transmission system cannot meet the specific experimental function requirements, and is complex to disassemble and assemble and has poor scalability, the present invention further provides a hollow floating rotary support device.

[0004] The technical solution adopted by the present invention to solve the above problems is: the present invention includes a drum gear shaft, a connecting shaft, a face gear coupling, a torsion meter adapter ring assembly, a bearing seat assembly and four servo hydraulic cylinder assemblies. The drum gear shaft, the connecting shaft and the face gear coupling are connected in sequence from top to bottom. The torsion meter adapter ring assembly is installed at the upper end of the drum gear shaft. The bearing assembly is sleeved on the connecting shaft. The four servo hydraulic cylinder assemblies are evenly arranged along the circumferential direction on the bearing assembly.

[0005] Further, the bearing assembly includes a bearing seat and tapered roller bearings. The tapered roller bearings are installed in the bearing seat and sleeved on the connecting shaft.

[0006] Further, each servo hydraulic cylinder assembly includes an axial servo hydraulic cylinder and a servo hydraulic cylinder mounting seat. The servo hydraulic cylinder mounting seat is fixedly connected to the outer wall of the bearing seat. The axial servo hydraulic cylinder is vertically installed on the servo hydraulic cylinder mounting seat, and the axis of the axial servo hydraulic cylinder is parallel to the axis of the connecting shaft.

[0007] Further, one servo hydraulic cylinder assembly further includes a radial servo hydraulic cylinder. The radial servo hydraulic cylinder is horizontally installed on the servo hydraulic cylinder mounting seat, and the axis of the radial servo hydraulic cylinder is perpendicular to the axis of the connecting shaft.

[0008] Further, the present invention further includes an upper sealing cover and a lower sealing cover. The upper sealing cover is installed on the upper surface of the bearing seat, and the lower surface of the upper sealing cover is detachably connected to the upper surface of the bearing seat. The lower sealing cover is installed on the lower surface of the bearing seat, and the upper surface of the lower sealing cover is detachably connected to the lower surface of the bearing seat.

[0009] Further, the torsiograph adapter ring assembly includes a torsiograph adapter ring, an internal gear ring, and a threaded plug. The threaded plug is inserted into the upper end of the crowned gear shaft, the internal gear ring is sleeved on the crowned gear shaft, and the torsiograph adapter ring is sleeved on the threaded plug.

[0010] Further, a sealing gasket is provided between the outer surface of the lower end of the internal gear ring and the inner wall of the upper sealing cover.

[0011] The beneficial effects of the present invention are as follows: The present invention can apply simulated loadings of lift, bending moment, and shear force of the rotor through a servo hydraulic cylinder; the hollow floating structural characteristics can not only achieve separate support loading of the inner and outer shafts and meet the functions of a specific tester device, but also effectively improve the disassembly, assembly simplicity, and expandability of the tester. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present invention. Specific Embodiments

[0013] Specific Embodiment 1: In combination with Figure 1 to illustrate this embodiment, a hollow floating rotary support device described in this embodiment includes a crowned gear shaft 3, a connecting shaft 5, a face gear coupling 7, a torsiograph adapter ring assembly, a bearing seat assembly, and four servo hydraulic cylinder assemblies. The crowned gear shaft 3, the connecting shaft 5, and the face gear coupling 7 are connected in sequence from top to bottom. The torsiograph adapter ring assembly is installed at the upper end of the crowned gear shaft 3. The bearing assembly is sleeved on the connecting shaft 5. The four servo hydraulic cylinder assemblies are evenly distributed along the circumferential direction on the bearing assembly. The axial introduction of the crowned gear shaft 3 realizes axial angular compensation, and the introduction of the face gear coupling 7 realizes a quick-change structure that is convenient for disassembly and assembly.

[0014] Specific Embodiment 2: In combination with Figure 1 to illustrate this embodiment, the bearing assembly of a hollow floating rotary support device described in this embodiment includes a bearing seat 6 and a tapered roller bearing 10. The tapered roller bearing 10 is installed in the bearing seat 6, and the tapered roller bearing 10 is sleeved on the connecting shaft 5. Other compositions and connection relationships are the same as those in Specific Embodiment 1.

[0015] Specific Embodiment 3: In combination with Figure 1 to illustrate this embodiment, each servo hydraulic cylinder assembly of a hollow floating rotary support device described in this embodiment includes an axial servo hydraulic cylinder 8 and a servo hydraulic cylinder mounting seat 11. The servo hydraulic cylinder mounting seat 11 is fixedly connected to the outer wall of the bearing seat 6. The axial servo hydraulic cylinder 8 is vertically installed on the servo hydraulic cylinder mounting seat 11, and the axis of the axial servo hydraulic cylinder 8 is parallel to the axis of the connecting shaft 5. Other compositions and connection relationships are the same as those in Specific Embodiment 1 or 2.

[0016] Specific Embodiment 4: In combination withFigure 1 Referring to this embodiment, one of the servo hydraulic cylinder assemblies of the hollow floating rotary support device described in this embodiment further includes a radial servo hydraulic cylinder 9. The radial servo hydraulic cylinder 9 is horizontally installed on the servo hydraulic cylinder mounting seat 11, and the axis of the radial servo hydraulic cylinder 9 is perpendicular to the axis of the connecting shaft 5. The connection of the axial and radial hydraulic cylinders realizes the loading of axial and radial forces. Other components and connection relationships are the same as those in the third specific embodiment.

[0017] Specific embodiment five: Figure 1 Referring to this embodiment, the hollow floating rotary support device described in this embodiment further includes an upper seal cover 12 and a lower seal cover 13. The upper seal cover 12 is installed on the upper surface of the bearing seat 6, and the lower surface of the upper seal cover 12 is detachably connected to the upper surface of the bearing seat 6. The lower seal cover 13 is installed on the lower surface of the bearing seat 6, and the upper surface of the lower seal cover 13 is detachably connected to the lower surface of the bearing seat 6. Other components and connection relationships are the same as those in the second specific embodiment.

[0018] Specific embodiment six: Figure 1 Referring to this embodiment, the torsiograph adapter ring assembly of the hollow floating rotary support device described in this embodiment includes a torsiograph adapter ring 1, an internal gear ring 2, and a threaded plug 4. The threaded plug 4 is inserted into the upper end of the crowned gear shaft 3, the internal gear ring 2 is sleeved on the crowned gear shaft 3, and the torsiograph adapter ring 1 is sleeved on the threaded plug 4. Other components and connection relationships are the same as those in the first specific embodiment.

[0019] Specific embodiment seven: Figure 1 Referring to this embodiment, a sealing gasket 14 is provided between the outer surface of the lower end of the internal gear ring 2 and the inner wall of the upper seal cover 12 of the hollow floating rotary support device described in this embodiment. Other components and connection relationships are the same as those in the fifth or sixth specific embodiment.

[0020] Working principle

[0021] In the present invention, the torsiograph adapter ring 1 and the splines at the end of the face gear coupling 7 are serially connected to the shafting. The torque is transmitted respectively through the face gear splines meshed between the face gear coupling 7 and the connecting shaft 5 and the crowned gear connection meshed between the crowned gear shaft 3 and the internal gear ring 3. Four evenly distributed axial hydraulic cylinders 8 are provided for axial force loading, and one radial hydraulic cylinder 9 is provided for radial force loading.

[0022] Among them, the face gear splines meshed between the face gear coupling 7 and the connecting shaft 5 can realize the quick connection and disconnection of the device in the shafting. The crowned gear shaft 3 can realize the angular compensation ability of the present invention, and the angular compensation of the present invention can reach up to 8°.

[0023] To achieve axial floating, three axial floating spaces are provided in this device, which are respectively located at the connection between the torsion measuring instrument adapter ring 1 and the threaded plug 4, the meshing part between the internal gear ring 2 and the crowned gear shaft 3, and the connection between the internal gear ring 2 and the bearing housing 6. Among them, the bearing housing 6 is the stator, and the rest are rotors.

[0024] The component parts of this device, such as the threaded plug 4, the connecting shaft 5, and the face gear coupling 7, are all hollow components, which can realize the internal shaft passing and other special requirement structures of this device. This greatly improves the expandability of this device.

[0025] This invention adopts the back-to-back arrangement of tapered roller bearings and uses the method of preloading the inner and outer rings to eliminate the radial and axial clearances of the bearings. There are no clearances between the contact surfaces of all components of the whole device, and it has great stiffness in the axial and radial directions.

[0026] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments according to the technical essence of the present invention within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A hollow floating rotary support device, characterized in that: The described hollow floating rotary support device includes a drum gear shaft (3), a connecting shaft (5), an end face gear coupling (7), a torsiometer adapter ring assembly, a bearing housing assembly, and four servo hydraulic cylinder assemblies. The drum gear shaft (3), the connecting shaft (5), and the end face gear coupling (7) are connected in sequence from top to bottom. The torsiometer adapter ring assembly is installed at the upper end of the drum gear shaft (3). The bearing housing assembly is sleeved on the connecting shaft (5). The four servo hydraulic cylinder assemblies are evenly arranged in the circumferential direction on the bearing housing assembly; The bearing housing assembly includes a bearing housing (6) and a tapered roller bearing (10). The tapered roller bearing (10) is installed in the bearing housing (6) and is sleeved on the connecting shaft (5); Each servo hydraulic cylinder assembly includes an axial servo hydraulic cylinder (8) and a servo hydraulic cylinder mounting seat (11). The servo hydraulic cylinder mounting seat (11) is fixedly connected to the outer wall of the bearing housing (6). The axial servo hydraulic cylinder (8) is vertically installed on the servo hydraulic cylinder mounting seat (11), and the axis of the axial servo hydraulic cylinder (8) is parallel to the axis of the connecting shaft (5); One of the servo hydraulic cylinder assemblies further includes a radial servo hydraulic cylinder (9). The radial servo hydraulic cylinder (9) is horizontally installed on the servo hydraulic cylinder mounting seat (11), and the axis of the radial servo hydraulic cylinder (9) is perpendicular to the axis of the connecting shaft (5); The described hollow floating rotary support device further includes an upper seal cover (12) and a lower seal cover (13). The upper seal cover (12) is installed on the upper surface of the bearing housing (6), and the lower surface of the upper seal cover (12) is detachably connected to the upper surface of the bearing housing (6). The lower seal cover (13) is installed on the lower surface of the bearing housing (6), and the upper surface of the lower seal cover (13) is detachably connected to the lower surface of the bearing housing (6); The torsiometer adapter ring assembly includes a torsiometer adapter ring (1), an internal gear ring (2), and a threaded plug (4). The threaded plug (4) is inserted into the upper end of the drum gear shaft (3). The internal gear ring (2) is sleeved on the drum gear shaft (3). The torsiometer adapter ring (1) is sleeved on the threaded plug (4); A gasket (14) is provided between the outer surface of the lower end of the internal gear ring (2) and the inner wall of the upper seal cover (12).

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