Test bench structure for single-fulcrum floating shaft of high-power gear box

Abstract

The invention discloses a test bench structure of a high-power gear box single-fulcrum floating shaft, and relates to the technical field of high-power gear transmission device tests. The problems that an existing floating shaft is fixed, and the compensation effect of misalignment after a single-fulcrum floating shaft in an actual unit is connected with a motor shaft system cannot be tested and reflected are solved. The device comprises a motor, a first diaphragm coupling, an accompanying test box, a second diaphragm coupling, a test box, a bearing seat and an accompanying test shaft, an output shaft of the motor is connected with the input end of the accompanying test box through the first diaphragm coupling, and the output end of the accompanying test box is connected with the input end of the test box through the second diaphragm coupling. The output end of the test box is in rigid connection with the accompanying shaft, the accompanying shaft is installed in a sliding bearing of the bearing seat in a floating mode, the lower end of the motor is fixedly connected with a motor base, the lower end of the accompanying box is fixedly connected with an accompanying box base, the lower end of the bearing seat is fixedly connected with a bearing seat base, and the lower end of the test box is fixedly connected with an adjusting cushion block. The device is used for testing the single-fulcrum floating shaft of the high-power gear box.

Description

Technical Field

[0001] The invention relates to the technical field of high-power gear transmission device testing, and in particular to a test bench structure of a single-pivot floating shaft of a high-power gear box. Background Art

[0002] With the progress of society and the development of science and technology, the use of national electricity is becoming increasingly tense, which has spawned many large-scale generator sets, such as biomass power generation, waste incineration generator sets, and power generation ships that are in line with national development plans. This type of generator set mainly uses the main engine to transmit power through a high-speed gearbox to drive the generator to generate electricity. In order to meet the requirements of the unit's spatial layout and the axial positioning of the generator, the generator set often requires a rigid connection between the high-speed gearbox and the generator. Among them, large-power generator sets, especially those above 40MW, use a single-point supported reverse-through torque shaft CN217713381U to increase the flexibility compensation design between rigidly connected equipment. The torque shaft in the generator set needs to rigidly connect the high-speed gearbox and the generator to realize its use function, and the gearbox has only one supporting structure in a single device. The reverse-through torque shaft structure has the advantages of strong torque transmission capacity and compact structure.

[0003] Because the reverse-penetrating torsion shaft of the gearbox is a special structure of a single-pivot floating shaft, in the factory test of the gearbox, the floating shaft is generally fixed in the transmission device body by a special structure to realize the test arrangement. However, this test method fixes the floating shaft, and cannot test the compensation effect of the misalignment after the single-pivot floating shaft is connected to the motor shaft system in the actual unit, and cannot verify the actual effect of the long shaft system composed of the rigid connection between the floating shaft and the motor shaft system across the first-order critical speed. In particular, if the on-site unit uses a faulty gearbox, a test structure and method that is closer to the actual use condition is needed to reproduce the fault phenomenon and verify the performance of the gearbox after repair. Summary of the invention

[0004] In order to solve the problems that the existing floating shaft is fixed, it is impossible to test the compensation effect of the misalignment after the single-pivot floating shaft is connected to the motor shaft system in the actual unit, and it is impossible to verify the actual effect of the long shaft system composed of the rigid connection between the floating shaft and the motor shaft system when used across the first-order critical speed, the present invention proposes a test bench structure for the single-pivot floating shaft of a high-power gearbox.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A test bench structure for a single-pivot floating shaft of a high-power gearbox comprises a motor, a first diaphragm coupling, a test box, a second diaphragm coupling, a test box, a bearing seat and a test shaft. The output shaft of the motor is connected to the input end of the test box through the first diaphragm coupling, the output end of the test box is connected to the input end of the test box through the second diaphragm coupling, the output end of the test box is rigidly connected to the test shaft, the test shaft is floatingly installed in a sliding bearing of the bearing seat, the lower end of the motor is fixedly connected to a motor base, the lower end of the test box is fixedly connected to a test box base, the lower end of the bearing seat is fixedly connected to a bearing seat base, and the lower end of the test box is fixedly connected to an adjustment pad.

[0007] Furthermore, the rotation centers of the motor, the test box, the test box and the test shaft are at the same height.

[0008] Furthermore, the test box includes a large gear, a floating shaft and an input gear shaft. The input gear shaft and the floating shaft are arranged in parallel in the box body of the test box. The large gear set is fixed to one end of the floating shaft. One end of the input gear shaft extends to the outside of the box body and is connected to the output end of the test box. The other end of the floating shaft extends to the outside of the box body and is connected to the test shaft. The large gear is meshed with the teeth of the input gear shaft.

[0009] Furthermore, the large gear is fixedly connected to the floating shaft through a spline sleeve.

[0010] Furthermore, both ends of the large gear are connected to the box body through thrust sliding bearings respectively.

[0011] Furthermore, two ends of the large gear are connected to the box body through sliding sleeves respectively.

[0012] Furthermore, there are two bearing seats, which are respectively arranged at both ends of the test shaft, and the test shaft is connected to the bearing seats through a tilting pad sliding bearing.

[0013] Furthermore, thrust plates are provided at both ends of the companion shaft, and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing.

[0014] Furthermore, there is one bearing seat, which is arranged in the middle of the test shaft, and the test shaft is connected to the bearing seat via a tilting pad sliding bearing.

[0015] Furthermore, thrust plates are provided at both ends of the companion shaft, and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a novel test bench structure and test method for a single-pivot floating shaft of a high-power gearbox. The test bench structure can effectively realize a no-load test of a high-power gearbox with a single-pivot floating shaft structure and a simulation test verification of a long shaft system of a generator set. The overall structure of the test bench is compact, the assembly is flexible, and the operation and use are simple. By changing the position of the test shaft and the bearing seat, test verification under different types of test boxes, different units, and different shaft system conditions can be achieved. The test operation of a long shaft system composed of a rigid connection between a floating shaft and a motor shaft system across the first-order critical speed can be achieved, and the test verification performance is more accurate and the test reproducibility is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention on a 40MW-class generator set gearbox test bench;

[0019] Figure 2 yes Figure 1 Sectional view of the test chamber and the accompanying test shaft;

[0020] Figure 3 This is a schematic diagram of the overall structure of the present invention on a 85MW-class generator gearbox test bench;

[0021] Figure 4 It is a schematic diagram of the structure of the test box and the accompanying test shaft in the first embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the test box and the accompanying test shaft in the second embodiment of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the test box and the accompanying test shaft in the third embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the test box and the accompanying test shaft in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Specific implementation method 1: Combination Figures 1 to 3The present embodiment is described. The test bench structure of a single-pivot floating shaft of a high-power gearbox described in the present embodiment comprises a motor 1, a first diaphragm coupling 2, a test box 3, a second diaphragm coupling 4, a test box 5, a bearing seat 6 and a test shaft 7. The output shaft of the motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2, the output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4, the output end of the test box 5 is rigidly connected to the test shaft 7, and the test shaft 7 is floatingly installed in the sliding bearing of the bearing seat 6. The lower end of the motor 1 is fixedly connected to a motor base 11, the lower end of the test box 3 is fixedly connected to a test box base 10, the lower end of the bearing seat 6 is fixedly connected to a bearing seat base 8, and the lower end of the test box 5 is fixedly connected to an adjustment pad 9.

[0027] The test bench in this embodiment further includes an oil-water system 12 and an electrical system 13 , and the oil-water system 12 and the electrical system 13 are respectively matched with the test bench structure.

[0028] The test bench is driven by motor 1. Motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2 and flexibly compensated. The output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4 and flexibly compensated. The output end of the test box 5 is rigidly connected to the input end of the test shaft 7 by bolts. At the same time, the test shaft is installed in the bearing seat at the same time. The equipment of the overall test bench achieves the same center height of the entire test bench unit through various bases and adjustment pads 9. Among them, the test shaft 7 can be designed and changed according to the specific structural requirements of the test box and the actual shaft system layout requirements of the unit, and the bearing seat support position can be adjusted. The test bench can be adjusted by using different shaft system lengths, moments of inertia, bearing support positions and center of gravity positions to achieve transverse vibration characteristics similar to or similar to the long shaft system to simulate the operating state of the actual unit, and achieve more accurate test verification capabilities and fault phenomenon reproduction capabilities. The design of this structure can achieve flexible disassembly and assembly, and the shaft system adjustment can be achieved by adjusting the positions of the test shaft 7 and the bearing seat 6. Therefore, the present invention has the characteristics of compact overall structure, flexible assembly, strong test verification capability, etc.

[0029] The motor 1 is longitudinally fixedly connected to the motor base 11 by bolts to meet the center height requirement. The output shaft of the motor 1 is fixedly connected to the flange at one end of the first diaphragm coupling 2 by bolts. The flange at the other end of the first diaphragm coupling 2 is fixedly connected to the input end of the test box 3 by bolts. The first diaphragm coupling 2 realizes the flexibility compensation of the shaft system between the motor 1 and the test box 3. The test box 3 and the test box base 10 are longitudinally fixedly connected by bolts to meet the center height requirement. The output end of the test box 3 is fixedly connected to the flange at one end of the second diaphragm coupling 4 by bolts. The other end of the second diaphragm coupling 4 is fixedly connected to the input end of the test box 5 by bolts. The second diaphragm coupling 4 realizes the flexibility compensation of the shaft system between the test box 3 and the test box 5. The test box 5 is longitudinally fixedly connected to the adjustment pad 9 by bolts to meet the center height requirement. The height of the adjustment pad 9 is changed according to the center height for test boxes 5 of different models.

[0030] Specific implementation method 2: Combination Figures 1 to 3 To explain this embodiment, the rotation centers of the motor 1 , the test box 3 , the test box 5 and the test shaft 7 described in this embodiment are at the same height.

[0031] The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0032] Specific implementation method three: Combination Figures 1 to 3 To illustrate this embodiment, the test box 5 described in this embodiment includes a large gear 14, a floating shaft 15 and an input gear shaft 16. The input gear shaft 16 and the floating shaft 15 are arranged in parallel in the box body of the test box 5. The large gear 14 is set and fixedly connected to one end of the floating shaft 15. One end of the input gear shaft 16 extends to the outside of the box body and is connected to the output end of the test box 3. The other end of the floating shaft 15 extends to the outside of the box body and is connected to the test shaft 7. The large gear 14 is meshed with the gear teeth of the input gear shaft 16.

[0033] The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0034] Specific implementation method four: Combination Figures 1 to 3 To explain this embodiment, the large gear 14 in this embodiment is fixedly connected to the floating shaft 15 through a spline set.

[0035] The undisclosed technical features in this embodiment are the same as those in the third embodiment.

[0036] Specific implementation method five: Combination Figures 1 to 3 To explain this embodiment, both ends of the large gear 14 in this embodiment are connected to the housing via thrust sliding bearings 17 .

[0037] The undisclosed technical features in this embodiment are the same as those in the third embodiment.

[0038] Specific implementation method six: Combination Figures 1 to 3 To explain this embodiment, both ends of the large gear 14 in this embodiment are connected to the box body through sliding sleeves.

[0039] The undisclosed technical features in this embodiment are the same as those in the third embodiment.

[0040] Specific implementation method seven: Combination Figures 1 to 3 To explain this embodiment, the number of the bearing seats 6 described in this embodiment is two, and the bearing seats 6 are respectively arranged at both ends of the companion test shaft 7, and the companion test shaft 7 is connected to the bearing seats 6 through a tilting pad sliding bearing 18.

[0041] The undisclosed technical features in this embodiment are the same as those in the fifth or sixth embodiment.

[0042] In the structure of the test box 5, the large gear 14 is floatingly installed in the thrust sliding bearing 17, and the thrust sliding bearing 17 is fixedly installed on the box body of the test box 5 to realize two-point support and axial positioning of the large gear 14; one end of the floating shaft 15 is fixedly connected to the large gear 14 through a spline to realize single-point support and axial positioning inside the test box 5, and the other end of the floating shaft 15 is rigidly connected to the accompanying test shaft 7 through bolts. The floating shaft 15 realizes another single-point support with the support of the accompanying test shaft 7, and realizes double-point support and axial positioning of the floating shaft 15 in the test bench, so that it can run stably; the tilting pad sliding bearings 18 on which the accompanying test shaft 7 is respectively floatingly installed are respectively fixedly installed in two bearing seats 6 to realize two-point support of the accompanying test shaft 7, and the axial positioning is achieved with the help of the axial positioning of the floating shaft 15 rigidly connected thereto. The tilting pad sliding bearing 18 is an adjustable tilting pad sliding bearing with a thrust surface, which can be used as an adjustable supporting sliding bearing in this test bench arrangement, and can also be combined with the test shaft 7 structure to act as an adjustable thrust supporting sliding bearing.

[0043] Specific implementation method eight: Combination Figures 1 to 3 To explain this embodiment, thrust plates are provided at both ends of the companion shaft 7 described in this embodiment, and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing 18 .

[0044] The undisclosed technical features in this embodiment are the same as those in the seventh embodiment.

[0045] Specific implementation method nine: Combination Figures 1 to 3 To explain this embodiment, the number of the bearing seat 6 described in this embodiment is one, and the bearing seat 6 is arranged in the middle of the test shaft 7 , and the test shaft 7 is connected to the bearing seat 6 through a tilting pad sliding bearing 18 .

[0046] The undisclosed technical features in this embodiment are the same as those in the fifth or sixth embodiment.

[0047] Specific implementation method ten: Combination Figures 1 to 3 To explain this embodiment, thrust plates are provided at both ends of the companion shaft 7 described in this embodiment, and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing 18 .

[0048] The undisclosed technical features in this embodiment are the same as those in the ninth embodiment.

[0049] According to different test requirements and test conditions, the lateral vibration and torsional vibration data of the shaft system where the single-pivot floating shaft is located are calculated, and a suitable test shaft 7 is designed. According to the structure of the test shaft 7 and the calculation results, a bearing seat 6 is selected for support. According to the characteristics of the test box 5 without a thrust bearing, the test shaft 7 is designed as a structure with double-sided thrust plates, which is used in conjunction with the tilting pad sliding bearing 18 to achieve the effect of axial positioning.

[0050] The tilting pad sliding bearing 18 is an adjustable tilting pad sliding bearing with a thrust surface, which can be used as an adjustable support sliding bearing in the test bench arrangement, and can also be used as an adjustable thrust sliding bearing by changing the structure of the accompanying test shaft (7) and combining it.

[0051] Embodiment 1

[0052] like Figure 4 As shown, in this embodiment, the test box 5 is rigidly connected to the test shaft 7, and a thrust sliding bearing 17 is provided in the test box 5 to provide axial positioning. The test shaft 7 is simultaneously floatingly mounted in the tilting pad sliding bearings 18 of the two bearing seats 6, and the test shaft 7 has no axial positioning function.

[0053] A test bench structure for a single-pivot floating shaft of a high-power gearbox comprises a motor 1, a first diaphragm coupling 2, a test box 3, a second diaphragm coupling 4, a test box 5, a bearing seat 6 and a test shaft 7. The output shaft of the motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2, the output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4, the output end of the test box 5 is rigidly connected to the test shaft 7, the test shaft 7 is floatingly installed in the sliding bearing of the bearing seat 6, the lower end of the motor 1 is fixedly connected to a motor base 11, the lower end of the test box 3 is fixedly connected to a test box base 10, the lower end of the bearing seat 6 is fixedly connected to a bearing seat base 8, and the lower end of the test box 5 is fixedly connected to an adjustment pad 9.

[0054] The rotation centers of the motor 1, the test box 3, the test box 5 and the test shaft 7 are at the same height.

[0055] The test box 5 includes a large gear 14, a floating shaft 15 and an input gear shaft 16. The input gear shaft 16 and the floating shaft 15 are arranged in parallel in the box body of the test box 5. The large gear 14 is set and fixed on one end of the floating shaft 15. One end of the input gear shaft 16 extends to the outside of the box body and is connected to the output end of the accompanying test box 3. The other end of the floating shaft 15 extends to the outside of the box body and is connected to the accompanying test shaft 7. The large gear 14 is meshed with the gear teeth of the input gear shaft 16.

[0056] The large gear 14 is fixedly connected to the floating shaft 15 through a spline sleeve.

[0057] Both ends of the large gear 14 are connected to the box body through thrust sliding bearings 17 respectively.

[0058] There are two bearing seats 6 , which are respectively arranged at two ends of the test shaft 7 , and the test shaft 7 is connected to the bearing seats 6 via a tilting pad sliding bearing 18 .

[0059] Embodiment 2

[0060] like Figure 5 As shown, in this embodiment, the test box 5 is rigidly connected to the test shaft 7, a thrust sliding bearing 17 is provided in the test box 5 to provide axial positioning, and the test shaft 7 is floatingly installed in a sliding bearing 18 of a bearing seat 6, and the test shaft 7 has no axial positioning function.

[0061] A test bench structure for a single-pivot floating shaft of a high-power gearbox comprises a motor 1, a first diaphragm coupling 2, a test box 3, a second diaphragm coupling 4, a test box 5, a bearing seat 6 and a test shaft 7. The output shaft of the motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2, the output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4, the output end of the test box 5 is rigidly connected to the test shaft 7, the test shaft 7 is floatingly installed in the sliding bearing of the bearing seat 6, the lower end of the motor 1 is fixedly connected to a motor base 11, the lower end of the test box 3 is fixedly connected to a test box base 10, the lower end of the bearing seat 6 is fixedly connected to a bearing seat base 8, and the lower end of the test box 5 is fixedly connected to an adjustment pad 9.

[0062] The rotation centers of the motor 1, the test box 3, the test box 5 and the test shaft 7 are at the same height.

[0063] The test box 5 includes a large gear 14, a floating shaft 15 and an input gear shaft 16. The input gear shaft 16 and the floating shaft 15 are arranged in parallel in the box body of the test box 5. The large gear 14 is set and fixed on one end of the floating shaft 15. One end of the input gear shaft 16 extends to the outside of the box body and is connected to the output end of the accompanying test box 3. The other end of the floating shaft 15 extends to the outside of the box body and is connected to the accompanying test shaft 7. The large gear 14 is meshed with the gear teeth of the input gear shaft 16.

[0064] The large gear 14 is fixedly connected to the floating shaft 15 through a spline sleeve.

[0065] Both ends of the large gear 14 are connected to the box body through thrust sliding bearings 17 respectively.

[0066] The number of the bearing seat 6 is one, and the bearing seat 6 is arranged in the middle of the test shaft 7 . The test shaft 7 is connected to the bearing seat 6 through a tilting pad sliding bearing 18 .

[0067] Embodiment 3

[0068] like Figure 6 As shown, in this embodiment, the test box 5 is rigidly connected to the test shaft 7, and there is no axial positioning structure in the test box 5. The test shaft 7 is floatingly installed in the tilting pad sliding bearings 18 of the two bearing seats 6. The test shaft 7 has a double-sided thrust plate structure, which is used in conjunction with the tilting pad sliding bearings 18 to achieve the effect of axial positioning.

[0069] A test bench structure for a single-pivot floating shaft of a high-power gearbox comprises a motor 1, a first diaphragm coupling 2, a test box 3, a second diaphragm coupling 4, a test box 5, a bearing seat 6 and a test shaft 7. The output shaft of the motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2, the output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4, the output end of the test box 5 is rigidly connected to the test shaft 7, the test shaft 7 is floatingly installed in the sliding bearing of the bearing seat 6, the lower end of the motor 1 is fixedly connected to a motor base 11, the lower end of the test box 3 is fixedly connected to a test box base 10, the lower end of the bearing seat 6 is fixedly connected to a bearing seat base 8, and the lower end of the test box 5 is fixedly connected to an adjustment pad 9.

[0070] The rotation centers of the motor 1, the test box 3, the test box 5 and the test shaft 7 are at the same height.

[0071] The test box 5 includes a large gear 14, a floating shaft 15 and an input gear shaft 16. The input gear shaft 16 and the floating shaft 15 are arranged in parallel in the box body of the test box 5. The large gear 14 is set and fixed on one end of the floating shaft 15. One end of the input gear shaft 16 extends to the outside of the box body and is connected to the output end of the accompanying test box 3. The other end of the floating shaft 15 extends to the outside of the box body and is connected to the accompanying test shaft 7. The large gear 14 is meshed with the gear teeth of the input gear shaft 16.

[0072] The large gear 14 is fixedly connected to the floating shaft 15 through a spline sleeve.

[0073] Both ends of the large gear 14 are connected to the box body through sliding sleeves.

[0074] There are two bearing seats 6 , which are respectively arranged at two ends of the test shaft 7 , and the test shaft 7 is connected to the bearing seats 6 via a tilting pad sliding bearing 18 .

[0075] Thrust plates are provided at both ends of the companion shaft 7 , and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing 18 .

[0076] Embodiment 4

[0077] like Figure 7 As described, in this embodiment, the test box 5 is rigidly connected to the test shaft 7, and there is no axial positioning structure in the test box 5. The test shaft 7 is floatingly installed in a tilting pad sliding bearing 18 of a bearing seat 6. The test shaft 7 has a double-sided thrust plate structure, which is used in conjunction with the tilting pad sliding bearing 18 to achieve the effect of axial positioning.

[0078] A test bench structure for a single-pivot floating shaft of a high-power gearbox comprises a motor 1, a first diaphragm coupling 2, a test box 3, a second diaphragm coupling 4, a test box 5, a bearing seat 6 and a test shaft 7. The output shaft of the motor 1 is connected to the input end of the test box 3 through the first diaphragm coupling 2, the output end of the test box 3 is connected to the input end of the test box 5 through the second diaphragm coupling 4, the output end of the test box 5 is rigidly connected to the test shaft 7, the test shaft 7 is floatingly installed in the sliding bearing of the bearing seat 6, the lower end of the motor 1 is fixedly connected to a motor base 11, the lower end of the test box 3 is fixedly connected to a test box base 10, the lower end of the bearing seat 6 is fixedly connected to a bearing seat base 8, and the lower end of the test box 5 is fixedly connected to an adjustment pad 9.

[0079] The rotation centers of the motor 1, the test box 3, the test box 5 and the test shaft 7 are at the same height.

[0080] The test box 5 includes a large gear 14, a floating shaft 15 and an input gear shaft 16. The input gear shaft 16 and the floating shaft 15 are arranged in parallel in the box body of the test box 5. The large gear 14 is set and fixed on one end of the floating shaft 15. One end of the input gear shaft 16 extends to the outside of the box body and is connected to the output end of the accompanying test box 3. The other end of the floating shaft 15 extends to the outside of the box body and is connected to the accompanying test shaft 7. The large gear 14 is meshed with the gear teeth of the input gear shaft 16.

[0081] The large gear 14 is fixedly connected to the floating shaft 15 through a spline sleeve.

[0082] Both ends of the large gear 14 are connected to the box body through sliding sleeves.

[0083] The number of the bearing seat 6 is one, and the bearing seat 6 is arranged in the middle of the test shaft 7 . The test shaft 7 is connected to the bearing seat 6 through a tilting pad sliding bearing 18 .

[0084] Thrust plates are provided at both ends of the companion shaft 7 , and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing 18 .

[0085] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A test bench structure for a single-pivot floating shaft of a high-power gearbox, characterized by: The invention comprises a motor (1), a first diaphragm coupling (2), a test box (3), a second diaphragm coupling (4), a test box (5), a bearing seat (6) and a test shaft (7); the output shaft of the motor (1) is connected to the input end of the test box (3) through the first diaphragm coupling (2); the output end of the test box (3) is connected to the input end of the test box (5) through the second diaphragm coupling (4); the output end of the test box (5) is rigidly connected to the test shaft (7); the test shaft (7) is floatingly mounted in the sliding bearing of the bearing seat (6); the lower end of the motor (1) is fixedly connected to a motor base (11); the lower end of the test box (3) is fixedly connected to a test box base (10); the lower end of the bearing seat (6) is fixedly connected to a bearing seat base (8); and the lower end of the test box (5) is fixedly connected to an adjustment pad (9).

2. According to claim 1, a test bench structure for a single-pivot floating shaft of a high-power gearbox, characterized in that: The rotation centers of the motor (1), the test box (3), the test box (5) and the test shaft (7) are at the same height.

3. According to the test bench structure of a single-pivot floating shaft of a high-power gearbox as claimed in claim 1, it is characterized by: The test box (5) comprises a large gear (14), a floating shaft (15) and an input gear shaft (16); the input gear shaft (16) and the floating shaft (15) are arranged in parallel in the box body of the test box (5); the large gear (14) is sleeved and fixedly connected to one end of the floating shaft (15); one end of the input gear shaft (16) extends to the outside of the box body and is connected to the output end of the accompanying test box (3); the other end of the floating shaft (15) extends to the outside of the box body and is connected to the accompanying test shaft (7); the gear teeth of the large gear (14) and the input gear shaft (16) are meshed.

4. According to claim 3, a test bench structure for a single-pivot floating shaft of a high-power gearbox is characterized by: The large gear (14) is fixedly connected to the floating shaft (15) through a spline sleeve.

5. According to claim 3, a test bench structure for a single-pivot floating shaft of a high-power gearbox is characterized by: Both ends of the large gear (14) are connected to the box body via thrust sliding bearings (17) respectively.

6. According to claim 3, a test bench structure for a single-pivot floating shaft of a high-power gearbox is characterized by: Both ends of the large gear (14) are connected to the box body via sliding sleeves.

7. A test bench structure for a single-pivot floating shaft of a high-power gearbox according to claim 5 or 6, characterized in that: The number of the bearing seats (6) is two, and the bearing seats (6) are respectively arranged at two ends of the test shaft (7), and the test shaft (7) is connected to the bearing seats (6) via a tilting pad sliding bearing (18).

8. The test bench structure of a single-pivot floating shaft of a high-power gearbox according to claim 7 is characterized by: Thrust plates are provided at both ends of the companion shaft (7), and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing (18).

9. A test bench structure for a single-pivot floating shaft of a high-power gearbox according to claim 5 or 6, characterized in that: The number of the bearing seat (6) is one, and the bearing seat (6) is arranged in the middle of the test shaft (7). The test shaft (7) is connected to the bearing seat (6) via a tilting pad sliding bearing (18).

10. The test bench structure of a single-pivot floating shaft of a high-power gearbox according to claim 9, characterized in that: Thrust plates are provided at both ends of the companion shaft (7), and the thrust plates are respectively arranged on both sides of the tilting pad sliding bearing (18).

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