A support device for a modular rotor test bench

Abstract

The present invention belongs to the technical field of gas turbines, and specifically relates to a support device for a modular rotor test bench, comprising a rotor support seat, a support threaded sleeve, a guide tube, a support screw, a planetary gear set, a main shaft, a large bevel gear, a small bevel gear, a housing, a base, a coupling, a motor, a motor seat cover, and a motor base. The support threaded sleeve performs reciprocating linear motion within the guide tube; the guide tube of the support threaded sleeve is positioned with the housing via a locating pin; the support screw is threadedly connected to the planetary carrier of the planetary gear set; the outer ring gear of the planetary gear set is fixed to the interior of the housing via a locating groove; the large bevel gear and the sun gear of the planetary gear set share the same main shaft; the output shaft of the motor is connected to the small bevel gear shaft via a coupling; and the motor is fixed to the base via the motor cover and the motor base with the aid of bolts. By using them in combination, the task switching efficiency of the modular rotor test bench can be significantly improved; the support device is simple, portable, and easy to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of gas turbines, and in particular relates to a supporting device for a modular rotor test bench. Background Art

[0002] Rotating machinery is a mechanical device widely used in industry, and conducting corresponding experimental research is of great significance to the improvement of rotor dynamics theory. In order to quickly verify the accuracy of different theoretical results, modular rotor test benches have come into being. Modular rotor test benches can flexibly, efficiently and cost-effectively meet multi-task experimental needs. However, when task switching is required, especially when studying the influence of bearings with different structures, the entire test bench will have to be disassembled and assembled. In order to reduce the time spent on disassembly and assembly and damage to the rotor, a simple, portable, easy-to-operate and widely applicable rotor support device has been designed, which has positive significance for improving the modular rotor test bench. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem that the existing modular rotor test bench takes a long time to disassemble and assemble during multi-task switching, and to provide a modular rotor support device with easy disassembly and assembly of parts.

[0004] The technical solution adopted by the present invention is: a support device for a modular rotor test bench, the support device comprising a rotor support seat, a supporting threaded sleeve, a transmission box, a first bearing, a small bevel gear shaft, a coupling, a motor base cover, a motor, a motor base and a base;

[0005] The transmission box includes a guide tube, a support screw, a nut, an upper planetary carrier, an upper thrust bearing, a second bearing, a planetary gear, a gear ring, a sun gear, a lower planetary carrier bearing, a lower planetary carrier, a main shaft, a small bevel gear, a large bevel gear, a lower thrust bearing and a shell; the rotor support seat is installed on the mounting seat at the top of the support threaded sleeve through a mortise and tenon, and the support threaded sleeve is located in the guide tube, which forms a secondary thread pair with the support screw. The guide tube is located at the upper part of the shell, and the upper part of the guide tube and the upper part of the shell are respectively provided with an inner positioning hole and an outer positioning hole; the large bevel gear is installed at one end of the main shaft through the lower thrust bearing. The small bevel gear is meshed with the large bevel gear, and the small bevel gear is mounted on the small bevel gear shaft through the first bearing; the lower planet carrier is mounted on the main shaft through the lower planet carrier bearing; the sun gear is mounted on the main shaft inside the ring gear, and the sun gear is meshed with the three planet gears, and the planet gears are mounted on the threaded shaft of the lower planet carrier through the second bearing; the upper planet carrier is fixed to the lower planet carrier through a nut, and the upper planet carrier is mounted on the other end of the main shaft through the upper thrust bearing; the support screw and the upper planet carrier form a primary thread pair; a positioning groove is opened on the outside of the ring gear, and the positioning groove is interference fit with the boss on the inner wall of the shell;

[0006] The outer shell of the transmission box is mounted on the base by bolts; the small bevel gear shaft is connected to the output shaft of the motor through a coupling, the motor is mounted on the motor base, the motor base cover is mounted on the motor base, and the motor base is mounted on the base by bolts.

[0007] Furthermore, the rotor support seat is of modular design. The modular rotor support seat is connected by a mortise and tenon structure and a support threaded sleeve with a scale. Different supports can be replaced according to the diameter of the supported shaft.

[0008] Furthermore, the supporting threaded sleeve is provided with a scale, and the scale on the surface is used to indicate the distance between the support and the base.

[0009] Furthermore, the number of positioning grooves on the gear ring is 4.

[0010] Furthermore, the supporting threaded sleeve and the guide tube are positioned with the housing via positioning pins.

[0011] The present invention provides a support device for a modular rotor test bench. The device can quickly switch support bases based on the diameter of the supported rotor and can be used anywhere on the entire modular rotor test bench. Combined use significantly improves the task switching efficiency of the modular rotor test bench. The device is simple, portable, and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the three-dimensional structure of embodiment 1;

[0013] Figure 2 This is a schematic diagram of the main structure of the first embodiment;

[0014] Figure 3 yes Figure 2 Right view;

[0015] Figure 4 This is a disassembled diagram of the motor base upper cover and the motor base in Example 1;

[0016] Figure 5 This is a disassembled view of the supporting threaded sleeve and the guide tube in Example 1;

[0017] Figure 6 This is a disassembled view of the transmission mechanism in the transmission box in Example 1. DETAILED DESCRIPTION Example

[0018] Referring to the figures, a support device for a modular rotor test bench includes a rotor support base 1, a support threaded sleeve 2, a transmission box 4, a first bearing 5, a small bevel gear shaft 6, a coupling 7, a motor base cover 8, a motor 9, a motor base 10 and a base 11;

[0019] The transmission box 4 includes a guide tube 13, a support screw 14, a nut 15, an upper planetary carrier 16, an upper thrust bearing 17, a second bearing 18, a planetary gear 19, a ring gear 20, a sun gear 21, a lower planetary carrier bearing 22, a lower planetary carrier 23, a main shaft 24, a small bevel gear 25, a large bevel gear 26, a lower thrust bearing 27 and a shell; the rotor support seat 1 is installed on the mounting seat at the top of the support thread sleeve 2 through mortise and tenon, and the support thread sleeve 2 is located in the guide tube 13, which forms a secondary thread pair with the support screw 14, and the guide tube 13 is located at the upper part of the shell, and the upper part of the guide tube 13 and the upper part of the shell are respectively provided with an inner positioning hole 12 and an outer positioning hole 3; the large bevel gear 26 is installed at one end of the main shaft 24 through the lower thrust bearing 27 , the small bevel gear 25 is engaged with the large bevel gear 26, and the small bevel gear 25 is mounted on the small bevel gear shaft 6 through the first bearing 5; the lower planet carrier 23 is mounted on the main shaft 24 through the lower planet carrier bearing 22; the sun gear 21 is mounted on the main shaft 24 inside the ring gear 20, and the sun gear 21 is engaged with three planetary gears 19, and the planetary gears 19 are mounted on the threaded shaft of the lower planet carrier 23 through the second bearing 18; the upper planet carrier 16 is fixed to the lower planet carrier 23 by a nut 15, and the upper planet carrier 16 is mounted on the other end of the main shaft 24 through the upper thrust bearing 17; the support screw 14 and the upper planet carrier 16 form a primary thread pair; a positioning groove is opened on the outside of the ring gear 20, and the positioning groove is interference fit with the boss on the inner wall of the shell;

[0020] The outer shell of the transmission box 4 is mounted on the base 11 by bolts; the small bevel gear shaft 6 is connected to the output shaft of the motor 9 through the coupling 7, the motor 9 is mounted on the motor base 10, the motor base upper cover 8 is mounted on the motor base 10, and the motor base 10 is mounted on the base 11 by bolts; the rotor support seat 1 is modular in design; the supporting threaded sleeve 2 is provided with a scale; the number of positioning grooves on the gear ring 20 is 4; the supporting threaded sleeve 2 and the guide tube 13 are positioned with the outer shell by positioning pins.

[0021] The modular rotor support seat is connected to the top of the support threaded sleeve with a scale through a mortise and tenon structure; the support threaded sleeve with a scale performs reciprocating linear motion in the guide tube of the support threaded sleeve; the guide tube of the support threaded sleeve is positioned with the housing by a positioning pin; the support screw is connected to the planetary carrier of the planetary gear set by a thread; the outer ring gear in the planetary gear set is fixed to the inside of the housing through a positioning groove; thrust bearings are provided at both ends of the main shaft; the large bevel gear and the sun gear of the planetary gear set share the same main shaft; the thrust bearing adapted to the large bevel gear is installed in a base with a bearing groove; the small bevel gear is connected to the gear shaft adapted to the small bevel gear through a keyway, and passes through the housing through a rolling bearing adapted to the small bevel gear shaft; the output shaft of the motor is connected to the small bevel gear shaft through a coupling, and the motor is connected to the small bevel gear shaft through the coupling to realize power input; the motor is fixed to the base with bolts through the motor cover and the motor base; the motor cover and the motor base are connected through a mortise and tenon structure; the housing is fixed to the base by bolts. The small bevel gear, driven by the motor, rotates the large bevel gear, forming the first stage of reduction. The small bevel gear and the small bevel gear shaft work together to receive energy from the motor. The large bevel gear drives the sun gear in the planetary gear set via the main shaft. The sun gear drives the planetary gears, which in turn rotate the planetary carrier, achieving the second stage of reduction. The planetary carrier rotates the support screw, causing the threaded sleeve to perform reciprocating linear motion within the guide tube. The support base is raised and lowered by controlling the motor's rotation direction.

[0022] In the disclosure of this solution, various aspects of the present technical solution are described with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the technical solution are not necessarily intended to include all aspects of the technical solution. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this technical solution are not limited to any implementation method. In addition, some aspects disclosed in this technical solution can be used alone or in any appropriate combination with other aspects disclosed in this technical solution.

[0023] While the present invention has been described above with reference to preferred embodiments, this is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and alterations may be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A support device for a modular rotor test bench, characterized by: The support device comprises a rotor support seat (1), a supporting threaded sleeve (2), a transmission box (4), a first bearing (5), a small bevel gear shaft (6), a coupling (7), a motor base cover (8), a motor (9), a motor base (10) and a base (11); The transmission box (4) comprises a guide tube (13), a support screw (14), a nut (15), an upper planetary carrier (16), an upper thrust bearing (17), a second bearing (18), a planetary gear (19), a gear ring (20), a sun gear (21), a lower planetary carrier bearing (22), a lower planetary carrier (23), a main shaft (24), a small bevel gear (25), a large bevel gear (26), a lower thrust bearing (27) and a housing; the rotor support seat (1) is mounted on a mounting seat at the top of a support thread sleeve (2) through a mortise and tenon joint, the support thread sleeve (2) is located in the guide tube (13), and forms a secondary thread pair with the support screw (14); the guide tube (13) is located at the upper part of the housing, and the upper part of the guide tube (13) and the upper part of the housing are respectively provided with an inner positioning hole (12) and an outer positioning hole (3); the large bevel gear (26) is mounted on the main shaft (24) through a lower thrust bearing (27) ) one end, the small bevel gear (25) is meshed with the large bevel gear (26), and the small bevel gear (25) is mounted on the small bevel gear shaft (6) through the first bearing (5); the lower planetary carrier (23) is mounted on the main shaft (24) through the lower planetary carrier bearing (22); the sun gear (21) is mounted on the main shaft (24) inside the ring gear (20), the sun gear (21) is meshed with three planetary gears (19), and the planetary gears (19) are mounted on the threaded shaft of the lower planetary carrier (23) through the second bearing (18); the upper planetary carrier (16) is fixed to the lower planetary carrier (23) through the nut (15), and the upper planetary carrier (16) is mounted on the other end of the main shaft (24) through the upper thrust bearing (17); the support screw (14) and the upper planetary carrier (16) form a primary thread pair; the outer surface of the ring gear (20) is provided with a positioning groove, and the positioning groove is interference-fitted with the boss on the inner wall of the shell; The housing of the transmission box (4) is mounted on the base (11) by bolts; the small bevel gear shaft (6) is connected to the output shaft of the motor (9) through a coupling (7); the motor (9) is mounted on the motor base (10); the motor base cover (8) is mounted on the motor base (10); and the motor base (10) is mounted on the base (11) by bolts; The rotor support seat (1) is of modular design; The supporting threaded sleeve (2) is provided with a scale.

2. The supporting device for a modular rotor test bench according to claim 1, characterized in that: The number of positioning grooves on the gear ring (20) is 4.

3. The supporting device for a modular rotor test bench according to claim 1, characterized in that: The supporting threaded sleeve (2) and the guide tube (13) are positioned with the housing via positioning pins.

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