CN204666365U - Four-degree-of-freedom power circuit formula kinematic train reliability test bench - Google Patents

Abstract

The utility model discloses a four-degree-of-freedom electric circuit transmission system reliability test bench, which aims at overcoming the problem that the existing vibration simulation device cannot fully simulate the working condition of the gear box during the running of the train. The reliability test bench includes a torque test device (1), a gearbox flexible coupling (2), a cross shaft universal coupling (3), a torque detection test device (4) and a four-degree-of-freedom vibration simulation test device (5); Described four-degree-of-freedom vibration simulation test device (5) comprises drive train test vibration shaft assembly (11) and four-degree-of-freedom vibration test bench (10); Four-degree-of-freedom vibration test bench (10) comprises T shaped beam (23); the drive train test vibration shaft assembly (11) is fixed on the four-degree-of-freedom vibration test bench (10) by bolts, and the tested gearbox shaft (20) in the drive train test vibration shaft assembly (11) The axis of revolution is parallel to the long side of the T-beam upper surface (30) of the T-beam (23).

Description

Four-degree-of-freedom power loop transmission system reliability test bench

technical field

The utility model relates to a test device for railway high-speed EMUs, more specifically, the utility model relates to a four-degree-of-freedom electric circuit transmission system reliability test bench.

Background technique

On April 18, 2007, my country successfully implemented the sixth national railway speed-up map adjustment. Harmony CRH series EMUs appeared on Chinese railways for the first time, and realized 250Km/h high-speed operation on existing lines, thereby unveiling It marked the prelude to the high-speed development of my country's railways. China's high-speed rail with a top speed of 350 kilometers per hour has run more than 200 million kilometers, and there have been no safety accidents in three years. At present, the maximum speed of the EMUs in operation has reached 480km/h, but with the increase of the speed, the operating conditions of the components of the high-speed train bogie traction drive system have become extremely deteriorated, and the safety and reliability of key components in operation are problematic. increasingly prominent.

The reliability of the traction drive system directly determines the safety, reliability and economy of rolling stock operation. Checking whether its fatigue strength meets the requirements of locomotive operation is of great significance to improving the reliability of rolling stock. However, because the actual working loads that cause fatigue are very complex, the structural design is ever-changing, the engineering properties of actual materials vary widely, and the stress generated by external loads is very sensitive to structures and materials. Therefore, any analysis method and prediction model has limitations, and the fatigue life simulation analysis has not been very accurate so far. However, conducting actual line tests is costly and risky.

Therefore, the research and development structure is simple and reasonable, aiming at the reliability test bench of the traction transmission system under the load condition of the high-speed train suspended traction transmission system commonly used in high-speed trains, so as to quickly expose the design of key components of the traction transmission system, It is an urgent task to eliminate production defects and improve product reliability.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the problem that the existing vibration simulation device cannot fully simulate the working condition of the gearbox during the train running, and to provide a reliable four-degree-of-freedom electric circuit transmission system for high-speed EMUs. sex test bed.

In order to solve the above-mentioned technical problems, the utility model is realized by adopting the following technical scheme: the reliability test bench of the four-degree-of-freedom electric circuit transmission system includes a torque test device, a flexible coupling of a gearbox, a cross-shaft universal joint Coupling, torque detection test device and four-degree-of-freedom vibration simulation test device.

The four-degree-of-freedom vibration simulation test device includes a drive train test vibration shaft assembly and a four-degree-of-freedom vibration test bench.

The drive train test vibration shaft assembly is fixed on the four-degree-of-freedom vibration test bench with bolts. The rotation axis of the tested gearbox shaft in the drive train test vibration shaft assembly and the T-shaped The long sides of the upper surface of the beam are parallel.

The drive train test vibration shaft assembly described in the technical proposal includes the shaft of the tested gearbox, the bearing seats of two tested gearboxes with the same structure, the No. 2 conical connecting flange, and two sets of tested gearboxes with the same structure. The stop washer of the bearing seat and the round nut of the bearing seat of the tested gearbox; the two ends of the tested gearbox shaft are respectively installed in the tested gearbox bearing seat with the same structure for rotational connection, and the shaft shoulders at the two ends of the tested gearbox shaft are respectively It is in contact with the end face of the labyrinth seal ring of the tested gearbox bearing seat on the tested gearbox bearing seat, and two sets of the tested gearbox bearing seat stop washer with the same structure and the tested gearbox bearing seat round nut are set on the tested gearbox bearing seat. The shaft of the gear box under test protrudes from the end outside the bearing seat of the gear box under test, and the No. 2 conical connecting flange is fixedly connected to the left end of the gear box shaft under test through double keys.

The four-degree-of-freedom vibration test bench described in the technical proposal also includes No. 1 longitudinal and lateral motion turning device, No. 1 vertical actuator, No. 1 longitudinal tie rod device, No. 2 longitudinal tie rod device, No. 2 vertical actuator and No. 2 vertical and horizontal motion turning device; the right end of No. 1 vertical and horizontal motion turning device is connected with No. 1 longitudinal tie rod seat on the T-shaped beam by bolts, and the upper end of No. 2 vertical and horizontal motion turning device is connected with No. The tie rod seat is connected by bolts, the No. 1 longitudinal tie rod device and the No. 2 longitudinal tie rod device and the No. 2 longitudinal tie rod seat on the T-shaped beam are connected with the No. The rotation axes of the No. 2 vertical and horizontal excitation rods in the No. 2 vertical and lateral motion turning device are parallel to each other; the No. 1 vertical actuator is connected with the upper end of the No. 2 vertical actuator and the No. 1 vertical on the T-shaped beam. The seat is bolted to the No. 2 vertical connection seat, and the No. 1 vertical actuator is vertically fixedly connected to the foundation with the lower end of the No. 2 vertical actuator.

The No. 1 vertical and horizontal motion turning device described in the technical proposal has the same structure as the No. 2 vertical and horizontal motion turning device, and the No. 1 vertical and horizontal motion turning device includes No. No. 1 double spherical hinge actuator device; the No. 1 vertical and horizontal excitation pull rod device includes the No. 1 vertical and horizontal excitation pull rod and the No. 1 longitudinal connection ball joint support device; the No. 1 longitudinal connection ball joint support device consists of No. 1 spherical hinge and No. 1 longitudinal connection support; one end of No. 1 vertical and horizontal excitation rod is connected with No. 1 spherical joint and No. 1 longitudinal connection support in rotation, and the other end of No. A No. 1 spherical hinge is connected to one end of the No. 1 vertical and horizontal turning assembly, and the upper end of the No. 1 double spherical hinge actuator device is connected to the other end of the No. 1 vertical and horizontal turning assembly using the No. 1 pin shaft.

The No. 1 vertical and horizontal turning assembly described in the technical proposal includes the No. 1 vertical and horizontal turning arm support seat, the No. 1 vertical and horizontal turning arm and the No. 1 turning arm support shaft; the No. 1 vertical and horizontal turning arm adopts the No. 1 turning arm support shaft Installed on the No. 1 vertical and horizontal turning arm support seat for rotational connection; the No. 1 vertical and horizontal turning arm support seat is welded by the No. 1 support seat bottom plate and the No. 1 side support plate with the same structure. The No. 1 support seat bottom plate is A rectangular plate structure, a row of bolt through holes are arranged on each side of the two wide sides of the rectangular plate structure, the two No. 1 side support plates are plate structures with the same structure, and the upper ends of the two No. 1 side support plates are There are round through holes with the same structure for installing the support shaft of the No. 1 turning arm, and the rotation axes of the round through holes at the upper ends of the two No. 1 side support plates are collinear.

The No. 1 vertical and horizontal turning arm mentioned in the technical proposal is a V-shaped structural part, and the No. 1 vertical and horizontal turning arm is composed of the front support plate of the No. The right supporting rib of the longitudinal and transverse turning arm, the left supporting rib of the No. 1 longitudinal and transverse turning arm and the cylindrical bushing; the structure of the front supporting plate of the No. 1 longitudinal and transverse turning arm and the rear supporting plate of the No. There are through holes at the two ends and the middle of the front support plate of No. 1 vertical and horizontal turning arm and the rear support plate of No. 1 vertical and transverse turning arm. The two through holes set at the two ends have the same structure, and the rotation of the three through holes The axes are parallel to each other; the front support plate of the No. 1 vertical and horizontal turning arm and the rear supporting plate of the No. 1 vertical and transverse turning arm are placed side by side in parallel; The supporting ribs are sequentially placed between the front support plate of the No. 1 vertical and horizontal turning arm and the rear supporting plate of the No. 1 vertical and horizontal turning arm, and are connected and fixed into one body by welding. The cylindrical bushing and the front support plate of the No. 1 vertical and transverse turning arm It is collinear with the rotation axis of the large round through hole in the middle of the rear support plate of No. 1 vertical and horizontal turning arm, and the rotation axis of the small through holes at both ends of the rear support plate of No. 1 vertical and horizontal turning arm is collinear. .

The T-beam described in the technical proposal is a box-like structural part, the upper surface of the T-beam is provided with a T-shaped groove, the left end of the T-beam is welded and fixed to the No. The No. 3 longitudinal tie rod seat and the No. 4 longitudinal tie rod seat are welded and fixed at the end, the No. 3 longitudinal tie rod seat is welded and fixed at the front lower part of the T-shaped beam, and the No. 1 vertical connection seat is welded and fixed on the bottom surface of the left and right ends of the T-shaped beam No. 2 vertical connection seat; the No. 2 longitudinal tie rod seat on the T-shaped beam is connected to the left and right of the No. 1 longitudinal tie rod seat and are perpendicular to each other, and the No. 2 longitudinal tie rod seat is connected to the No. 1 vertical actuator connection seat up and down And vertical, the No. 4 longitudinal tie rod seat on the T-shaped beam and the No. 2 vertical connecting seat are connected up and down adjacently and are perpendicular to each other.

The torque test device described in the technical proposal and the four-degree-of-freedom vibration simulation test device are installed side by side on the foundation. The long sides of the upper surface of the shaped beam are on the same plane, and the transmission train test vibration shaft assembly in the four-degree-of-freedom vibration simulation test device and the test gearbox of the accompanying gearbox assembly test device use gear Box flexible coupling connection, the upper surface of the T-shaped beam of the four-degree-of-freedom vibration simulation test device and the upper working surface of the rectangular bearing platform of the torque test device are in the same horizontal plane, and the parallel distance between them is 20-40cm. The six-degree vibration simulation test device is connected with the torque detection test device on the left side by a horizontally placed cross-shaft universal coupling, and the axis of rotation and the vibration shaft assembly of the drive train test in the four-degree-of-freedom vibration simulation test device are connected. The rotation axis of the gear box shaft under test is collinear with the rotation axis of the transition shaft in the torque detection test device, and the upper surface of the rectangular bearing platform in the torque test device and the rectangular support platform in the torque detection test device are parallel to the long sides All are provided with several T-shaped slots parallel to each other.

Compared with the prior art, the beneficial effects of the utility model are:

1. The four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model can realize four-degree-of-freedom vibration, and accurately simulate the situation that a train is subjected to vibration during road operation.

2. The power-driven loading system of the four-degree-of-freedom power loop transmission system reliability test bench described in the utility model can simulate the situation of the large torque transmitted by the train traction system during the operation of the train, so as to ensure the rationality and accuracy of the gearbox detection sex.

3. The four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model can realize torque measurement within a wide range of vehicle speeds. The measured vehicle speed can reach 420Km/h under dynamic conditions and 500Km/h under static conditions. It can fully meet the fatigue test of the gear box of the high-speed transmission system that has been developed and is being developed, and has good economic and social benefits.

4. The design and structure of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model is reasonable, and each component is installed on the test bench by means of T-shaped bolts. If a component fails, the technician Also easy to disassemble.

5. The four-degree-of-freedom electric circuit transmission system reliability test bench of the utility model is equipped with a self-protection device, which will automatically cut off the connection when the torque is too large, so as to protect the staff and the machine equipment well.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the axonometric projection diagram of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 2 is the axonometric projection diagram of the torque test device and the four-degree-of-freedom vibration simulation test device of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 3 is the axonometric projection diagram of the gear box under test and the vibration shaft assembly test device of the gear box under test of the four-degree-of-freedom power loop transmission system reliability test bench described in the utility model;

Fig. 4 is the axonometric projection diagram of the four-degree-of-freedom vibration test bench of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 5 is the axonometric projection drawing of the T-shaped beam assembly of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 6 is an axonometric projection view of the No. 1 vertical and horizontal motion turning device of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the present invention;

Fig. 7 is the downward axonometric projection diagram of the longitudinal connection spherical joint support assembly of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 8 is the axonometric projection diagram of the longitudinal connection ball joint of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model;

Fig. 9 is an axonometric projection diagram of the structure of the four-degree-of-freedom electric circuit transmission system reliability test bench of the utility model composed of vertical and horizontal turning assemblies;

Fig. 10 is a front view of the structural composition of the four-degree-of-freedom power loop transmission system reliability test bench in the vertical and horizontal directions of the utility model;

Fig. 11 is an axonometric projection diagram of the structure of the vertical and horizontal turning arms of the four-degree-of-freedom electric circuit transmission system reliability test bench described in the present invention;

Fig. 12 is a cross-sectional view on the front view of the structure composition of the four-degree-of-freedom electric circuit transmission system reliability test bench in the vertical and horizontal directions;

Fig. 13 is an axonometric projection diagram of the structure of the four-degree-of-freedom electric circuit transmission system reliability test bench composed of vertical and horizontal turning arm support seats;

Fig. 14 is an axonometric projection view of the motor torque meter of the four-degree-of-freedom power loop transmission system reliability test bench of the present invention.

Fig. 15 is an axonometric projection view of the fixed bracket device of the accompanying gearbox and the bent plate bracket of the supporting frame device of the tested gearbox of the four-degree-of-freedom power loop transmission system reliability test bench of the present invention.

Fig. 16 is an axonometric projection view of the tested gearbox support frame device of the four-degree-of-freedom power loop transmission system reliability test bench described in the utility model;

In the figure: 1. Torque test device, 2. Gear box flexible coupling, 3. Cross shaft universal coupling, 4. Torque detection test device, 5. Four-degree-of-freedom vibration simulation test device, 6. Rectangular Bearing platform, 7. Tested gearbox support frame device, 8. Accompanying test gearbox assembly test device, 9. Accompanying test gearbox fixing bracket device, 10. Four-degree-of-freedom vibration test bench, 11. Drive train test vibration shaft Assembly, 12. Accompanying test gearbox vibration shaft assembly, 13. Accompanying test gearbox, 14. Accompanying test gearbox shaft, 15. Accompanying test gearbox bearing seat, 16. Accompanying test gearbox bearing seat stop washer, 17. The round nut of the bearing seat of the accompanying gearbox, 18. The labyrinth seal ring of the bearing seat of the accompanying gearbox, 19. The bearing seat of the tested gearbox, 20. The shaft of the tested gearbox, 21. The tested gearbox, No. 22.1 Conical connecting flange, 23. T-shaped beam, No. 24.1 vertical and horizontal movement turning device, No. 25.1 vertical actuator, No. 26.1 longitudinal tie rod device, No. 27.2 longitudinal tie rod device, No. 28.2 vertical actuator, No. 29.2 No. vertical and horizontal movement turning device, No. 30. T-shaped beam upper surface, No. 31.1 longitudinal tie rod seat, No. 32.2 longitudinal tie rod seat, No. 33.1 vertical connecting seat, No. 34.3 longitudinal tie rod seat, No. 35.2 vertical connecting seat, No. 36.4 longitudinal Tie rod seat, No. 37.1 longitudinal and transverse excitation tie rod device, No. 38.1 longitudinal and transverse turning assembly, No. 39.1 double ball joint actuator device, No. 40.1 longitudinal connection ball joint support device, No. 41.1 longitudinal and transverse excitation tie rod, No. 42.1 Longitudinal connection support, No. 43.1 spherical joint, No. 44.1 joint bearing device, No. 45.1 joint bearing inner ring retaining ring, No. 46.1 longitudinal tie rod connecting shaft, No. 47.1 vertical and horizontal turning arm, No. 48.1 vertical and horizontal turning arm support shaft, No. 49.1 Vertical and horizontal turning arm support seat, No. 50.1 longitudinal and transverse turning arm front support plate, No. 51.1 longitudinal and transverse turning arm rear support plate, No. 52.1 longitudinal and transverse turning arm right supporting rib, No. 53.1 longitudinal and transverse turning arm left supporting rib, 54 .Cylindrical shaft sleeve, No. 55.1 side support plate, No. 56.1 support base plate, No. 57.1 pin shaft, 58. Motor torque meter, 59. Transition shaft, 60. Frequency modulation motor (load motor), 61. Flange torque meter , No. 62.2 conical connecting flange, 63. Tested gear box bearing housing stop washer, 64. Tested gear box bearing housing round nut, 65. Tested gear box bearing housing labyrinth seal ring, 66. Horizontal side , 67. Longitudinal side, 68. Fixed support base of the gear box under test, 69. C-type fixture hanging support device, 70. C-type swing pipe welding fixture of the tested gear box, 71. Round nut, 72.1 Gear box C-type fixture hanging support shaft splint, No. 73.2 gear box C-type fixture hanging support shaft splint, 74. Gear box C-type fixture support shaft, 75. Spacer sleeve, No. 76.1 hinge plate, No. 77.2 hinge plate, 78. Hinge pin shaft, No. 79.1 rubber spacer, No. 80.2 rubber spacer, No. 81.2 vertical and horizontal excitation rods, No. 82.1 connection support, No. 83.1 longitudinal tie rod, No. 84.2 connection support, No. 85.2 longitudinal tie rod, No. 86.2 longitudinal connection support, No. 87.1 vertical connection support, No. 88.2 vertical connection support, and No. 89.2 spherical hinge.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

The four-degree-of-freedom electric circuit transmission system reliability test bench described in the utility model can simulate the four-degree-of-freedom vibration and the four-degree-of-freedom coupling vibration working condition of the train in the actual operation process, and the reliability test bench also has a power drive system And the load system forms a power loop transmission system, which can simulate the very large torque output by the traction motor of the train, and can also completely simulate the force of the train in actual operation, so that the fatigue analysis of the gearbox can be carried out, and further research on the gearbox can be carried out. Reliability, with good economic and social benefits.

Referring to Figures 1 to 2, the four-degree-of-freedom electric circuit transmission system reliability test bench includes a torque test device 1, a gearbox flexible coupling 2, a cross-shaft universal joint 3, and a torque detection test Device 4 and four-degree-of-freedom vibration simulation test device 5 .

The torque testing device 1 and the four-degree-of-freedom vibration simulation test device 5 are installed side by side on the foundation, the long side of the rectangular bearing platform 6 in the torque test device 1 and the T of the T-shaped crossbeam 23 in the four-degree-of-freedom vibration simulation test device 5 . The long sides of the upper surface 30 of the crossbeam are parallel. The gear train test in the four-degree-of-freedom vibration simulation test device 5 is the test gearbox 21 of the vibration shaft assembly 11 and the test gearbox 13 of the gearbox assembly test device 8 through the gearbox flexible coupling 2 connected. The upper surface 30 of the T-shaped crossbeam of the four-degree-of-freedom vibration simulation test device 5 and the upper working surface of the rectangular bearing platform 6 of the torque test device 1 are in the same horizontal plane, and the parallel distance between them is 20-40cm, and the distance range should not be too large. It must not be too small, and must meet the requirements that the test gearbox 13 and the tested gearbox 21 can be installed together through a coupling. The four-degree-of-freedom vibration simulation test device 5 is connected with the torque detection test device 4 at the left end through the cross-shaft universal joint 3, and the distance between them is determined by the cross-shaft universal joint 3 to ensure that the cross-shaft universal joint The axis of rotation of the shaft coupling 3 is collinear with the three lines of the axis of rotation of the gear box shaft 20 tested in the transmission test vibration shaft assembly 11 of the four-degree-of-freedom vibration simulation test device 5 and the transition shaft 59 in the torque detection test device 4 . The use of the cross-shaft universal joint 3 realizes the flexible transmission of power. The upper surface of the rectangular bearing platform 6 in the torque test device 1 and the rectangular support platform in the torque detection test device 4 is provided with several parallel T-shaped grooves along the long side parallel direction, and the T-shaped bolts for the fixing device can be It moves in the T-shaped groove provided on the surface of the two platforms, so the test equipment can be conveniently installed and positioned when carrying out related tests, and the position of the test device and equipment on the rectangular carrying platform 6 and the rectangular supporting platform can be adjusted according to the test needs.

The torque testing device 1 is composed of a rectangular bearing platform 6 , an accompanying gear box assembly testing device 8 and a motor torque meter 58 .

The motor torque meter 58 mainly provides driving for the system. Accompanying test gear box assembly test device 8 and motor torque meter (drive motor) 58 are respectively fixed on the rectangular carrying platform 6 along the long side direction of the rectangular carrying platform 6 by T-shaped bolts, making it a whole. That is, the axial direction of the accompanying gearbox test vibration shaft assembly 12 is parallel to the long side direction of the rectangular bearing platform 6, and the accompanying gearbox assembly test device 8 is installed on the left side of the motor torque meter (drive motor) 58. At the same time, the torque output by the motor torque meter (drive motor) 58 is transmitted to the accompanying gearbox in the gearbox assembly test device 8 through the flange torque meter 61 and the No. 1 tapered connection flange 22 Test vibration shaft assembly 12. The torque of the test gearbox 13 is transmitted to the tested gearbox 21 through the gearbox flexible coupling 2 . Utilizing the principle of gear meshing connection relationship, the large gear inside the test gearbox 13 meshes with the small gear of the test gearbox 13 on the left end of the gearbox coupling 2, and at the same time, the torque is transmitted through the gearbox flexible coupling 2 to The pinion gear of the tested gearbox 21 is driven by the pinion gear to the large gear of the tested gearbox 21 through the gear mesh connection relationship, and then transmitted to the drive train vibration test bench assembly 11 in the four-degree-of-freedom vibration simulation test device 5 and then transmitted to the transition shaft 59 in the torque detection test device 4 . While the transition shaft 59 transmits the torque to another motor torque meter 58, it also undertakes unstable factors such as bending moment and vibration caused by the cross-shaft universal joint 3, thereby ensuring stable data, high measurement accuracy and The torque sensor in the torque detection test device is well protected. The frequency modulation motor 60 (load motor) in the torque detection test device 4 is used as a system load, and provides resistance torque to the tested gearbox 21 according to the data fed back by the torque sensor.

Referring to Fig. 2, the described rectangular carrying platform 6 is a rectangular box-like structure, and the upper working surface of the rectangular carrying platform 6 and the bottom end plate of the rectangular carrying platform 6 are provided with grid-like ribs parallel to each other, The size should be able to put down the motor torque meter 58 and the accompanying gear box assembly test device 8. The rectangular carrying platform 6 can be made by casting or steel plate welding. The upper part of the rectangular carrying platform 6 The working surface and the bottom end plate of the rectangular bearing platform 6 are parallel to each other, and a T-shaped groove is arranged on the upper working surface of the rectangular bearing platform 6. The bottom end plate of the platform is fixed to the foundation of the test bench through anchor bolts, and the T-bolts can also flexibly fix other various instruments and devices on the rectangular carrying platform 6, making the rectangular carrying platform 6 a universal fixed carrier.

Referring to Fig. 2 to Fig. 3, described accompanying test gearbox assembly test device 8 is made up of accompanying test gearbox test vibration shaft assembly 12, accompanying test gearbox fixing bracket device 9, tested gearbox support frame device 7, gear Box flexible coupling 2 constitutes. The test vibration shaft assembly 12 of the accompanying gearbox, the fixed bracket device 9 of the accompanying gearbox and the supporting frame device 7 of the tested gearbox are all fixed on the left end of the rectangular bearing platform 6 by T-shaped bolts. And the axial direction of the vibration shaft assembly 12 of the accompanying test gearbox is placed parallel to the long side direction of the rectangular bearing platform 6 . The fixed bracket device 9 of the accompanying test gearbox is placed in the middle of the accompanying test gearbox bearing seat 15 of the accompanying test gearbox vibration shaft assembly 12 and the accompanying test gearbox 13, the position is subject to the ability to fix the accompanying test gearbox 13, and passed T-shaped bolts are fixed on the rectangular bearing platform 6 . The supporting frame device 7 of the gear box under test is installed and placed in the middle of the bearing seat of the gear box under test on the other side of the gear box under test 21 and the vibration shaft assembly 12 of the gear box under test. , and fixed on the rectangular bearing platform 6 by T-shaped bolts.

The test vibration shaft assembly 12 of the accompanying test gearbox is composed of the test gearbox shaft 14, two test gearbox bearing seats 15 with the same structure, No. 1 conical connection flange 22, and the test gearbox 13. , Two accompanying test gearbox bearing seat round nuts 17 and accompanying test gearbox bearing seat stop washer 16 with the same structure.

Accompanying test gear box 13 is sleeved on the test gear box shaft 14 and becomes interference fit. The test gear box shaft 14 is a stepped shaft with a shoulder at both ends, and the material is 1045 steel, which is cold-drawn. Accompanied by test gear box shaft 14 two ends are respectively installed in the rotary connection in the accompanying test gear box bearing seat 15 of identical structure. The inboard of every accompanying test gearbox bearing seat 15 is connected by the shaft shoulder of accompanying test gearbox shaft 14 and the end face of accompanying test gearbox bearing seat labyrinth seal ring 18 . The other end face of the labyrinth seal ring 18 of the bearing seat of the accompanying test gearbox is connected with the right end face or the left end face of the inner ring of the CRH3 axle box bearing on the bearing seat 15 of the accompanying test gearbox. Thereby, the axial positioning of the test gearbox shaft 14 or the test gearbox bearing seat 15 is realized. Accompanying test gear box shaft 14 is fixed by accompanying test gear box bearing seat round nut 17 and accompanying test gear box bearing seat stop washer 16 at an end of accompanying test gear box bearing seat 15 outsides. The test gearbox bearing housing 15 contains CRH3 axle box bearings, which ensures sufficient axial load capacity.

Referring to Fig. 2, Fig. 3 and Fig. 15, the fixed bracket device 9 of the accompanying test gearbox is fixed to the left end of the rectangular bearing platform 6 by T-shaped bolts, and is located in the middle position between the test gearbox bearing seat 15 and the test gearbox 13. The plane of symmetry of the test gear box fixed support device 9 is perpendicular to the length direction of the rectangular bearing platform 6, and the accompanying test gear box fixed support device 9 supports the pinion end of the test gear box 13, so that the test gear box 13 is stably fixed. The bent plate bracket of the fixed bracket device 9 of the accompanying test gear box is a right-angle component, which is composed of a transverse bent plate 66 and a vertical column 67 . The horizontal bent plate 66 is used to fix the bent plate support of the accompanying test gearbox to the rectangular bearing platform 6 through bolts. The left and right sides of the vertical column 67 are respectively processed with two vertical T-shaped through grooves from top to bottom, which can be conveniently Install or remove the support feet, and also adjust the up and down positions of the support feet on the longitudinal side of the bent plate bracket of the test gearbox according to the height of the test gearbox.

Referring to Fig. 16, the tested gear box support frame device 7 is composed of a tested gear box fixed support base 68, a C-type fixture hanging support device 69, a tested gear box C-type swing pipe welding fixture 70, two pieces The same C-shaped rubber block 71 constitutes No. 1 rubber block 79 and No. 2 rubber block 80 .

The supporting base 68 of the tested gear box fixing device is a right-angled component, which is consistent with the structure of the bent plate bracket in the gear box fixing bracket device 9 of the accompanying test. 66 and a longitudinal column 67, the test gearbox fixing device support base 68 is fixed to the rectangular bearing platform 6 by bolts, and the left and right sides of the longitudinal column 67 are respectively processed with two vertical T-shaped through slots from top to bottom , can easily install and remove the C-type fixture hanging support device 69.

The C-type jig hanging support device 69 is a welded and assembled part, and the No. 1 gear box C-type jig hangs the support shaft splint 72, and the No. 2 gear box C-type jig hangs the support shaft splint 73. , Gear box C type fixture supporting shaft 74, spacer sleeve 75, No. 1 hinge plate 76, No. 2 hinge plate 77 and hinge pin 78 constitute.

Gearbox C-type fixture support shaft 74, diameter 70mm, threaded at both ends, each end is installed with two standard nuts 71 with an inner diameter of 64. No. 1 gearbox C-type fixture hanging support shaft splint 72, No. 2 Gearbox C-type fixture hanging support splint 73, No. 1 hinge plate 76, spacer 75, and No. 2 hinge plate 77 are all set on the gear box C-type fixture support shaft 74 in turn from right to left, except for No. 2 gear The box C-type fixture hangs the support shaft splint 73 and the gearbox C-type fixture support shaft 74 is welded and connected, and the others are all rotating connections. There is a circular through hole with a diameter of 70mm at the upper end of the No. 1 gearbox C-type fixture suspension support shaft splint 72, which is used to install the C-type fixture support shaft 74 of the gearbox. A through hole is installed in the through hole to fix the C-type clamp hanging support device 69 to the fixed support base 68 of the tested gear box, thereby playing the role of fixing and adjusting the C-type clamp hanging support device 69. . The structure 73 of the suspension support shaft splint of the C-type fixture of the No. 2 gearbox is completely consistent with the structure of the C-type fixture suspension support frame splint 72 of the No. 1 gearbox, and is fixed to the middle position of the C-type fixture support shaft 74 of the gearbox by welding Then set the No. 1 gear box C-type jig hoisting support splint 72 on the C-type jig support shaft 74 that has welded the No. 2 gear box C-type jig hoisting support shaft splint 73, and the two support shafts The splints are distributed on both sides of the longitudinal column 6 of the fixed support base 68 of the tested gearbox, and are fixed to both sides of the longitudinal column 67 through T-bolt connections, thereby playing the role of hanging and supporting the C-shaped fixture. The structure of No. 1 hinge plate 76 and No. 2 hinge plate 77 is exactly the same, and its upper end through hole is all sleeved on the gear box C-type fixture support shaft 74, and there is a gap between No. 1 hinge plate 76 and No. 2 hinge plate 77 In order to ensure the verticality of the hinge plate, the spacer 75 set on the C-type fixture support shaft 74 of the gearbox is separated to ensure the stability of the hanging; between the through holes at the lower ends of the No. They are connected and fixed by the hinge pin shaft 78. In order to ensure certain hanging stability and moderate flexibility to eliminate stress, nylon sleeves are installed in the hinge through holes.

The C-type swing pipe welding jig 70 of the tested gearbox is C-shaped and is a welded part. The tested gear box C-type swing pipe welding jig 70 is installed on the C-shaped jig hanging support device 69 through the hinge pin 78, thereby the tested gear box supporting frame device 7 is formed as a whole. Two identical rubber pads are respectively installed at the two ports of the C-type swing pipe welding jig 70 of the tested gearbox, a No. 1 rubber block 79 is installed under the upper port, and a No. 2 rubber block 80 is installed above the lower port. , two rubber blocks were used to clamp the pinion end of the tested gearbox. At the same time, according to the height of the gear box 21 under test, the C-type jig hanging support device 69 is adjusted to realize the function of adjusting the C-type swing welding jig 70 of the gear box under test.

Referring to FIG. 2 , the four-degree-of-freedom vibration simulation test device 5 includes a drive train test vibration shaft assembly 11 and a four-degree-of-freedom vibration test bench 10 . T-bolts are used to fix the transmission system test vibration shaft assembly 11 on the four-degree-of-freedom vibration test bench 10, so that the rotation axis of the tested gearbox shaft 20 in the transmission system test vibration shaft assembly 11 is consistent with the four-degree-of-freedom vibration test The long sides of the T-beam upper surface 30 of the T-beam 23 in the stage 10 are parallel.

The drive train test vibration shaft assembly 11 includes the tested gearbox shaft 20, two tested gearbox bearing housings 19 with the same structure, No. 2 conical connecting flange 62 and two sets of tested gears with the same structure The round nut 64 of the bearing seat of the gearbox and the stop washer 63 of the bearing seat of the tested gearbox. The tested gearbox shaft 20 is fixedly installed on the T-shaped beam 23 through two tested gearbox bearing seats 19 with the same structure, and the rotation axis of the tested gearbox shaft 20 is parallel to the long side of the T-shaped beam upper surface 30; The test gear box 21 is set on the tested gear box shaft 20 as an interference fit. The two ends of the gear box shaft 20 under test are respectively installed in the gear box bearing seat 19 with the same structure for rotational connection. The inner side of each tested gearbox bearing seat 19 is connected by the shaft shoulder of the tested gearbox shaft 20 and the end face of the tested gearbox bearing seat labyrinth seal ring 65 . The other end face of the labyrinth seal ring 65 of the gear box bearing seat under test is in contact with the right end face or left end face of the inner ring of the CRH3 axle box bearing on the bearing seat 19 of the gear box under test, thereby realizing the test gearbox shaft 20 or is the axial positioning of the bearing housing 19 of the tested gearbox. One end of the tested gearbox shaft 20 outside the tested gearbox bearing seat 19 is fixed by the tested gearbox bearing seat round nut 64 and the tested gearbox bearing seat stop washer 63 . The tested gearbox bearing housing 19 contains CRH3 axle box bearings, which ensures sufficient axial load capacity. The No. 2 conical connecting flange 62 is fixedly connected to the left end of the gear box shaft 20 under test through a double key.

Referring to Fig. 4, the four-degree-of-freedom vibration test bench 10 includes a T-shaped beam 23, a No. 1 vertical actuator 25, a No. 2 vertical actuator 28, a No. 1 longitudinal tie rod device 26, and a No. 2 longitudinal tie rod device. 27, No. 1 vertical and horizontal motion turning device 24, and No. 2 vertical and horizontal motion turning device 29.

The right end of the No. 1 vertical and lateral movement turning device 24 is connected with the left end surface of the T-shaped crossbeam 23 by bolts, and the No. 1 vertical and transverse excitation pull rod 41 in the No. 1 vertical and transverse movement turning device 24 is perpendicular to the left end surface of the T-shaped crossbeam. The No. 1 longitudinal and transverse excitation rod 41 and the No. 1 longitudinal rod device 26 in the No. 1 vertical and lateral motion turning device 24 are perpendicular to each other and adjacent to each other on the left and right. The axis of rotation of No. 2 vertical and horizontal excitation rod 81 of No. 1 longitudinal tie rod device 26, No. 2 longitudinal tie rod device 27, and No. 2 vertical and horizontal movement turning device 29 is perpendicular to the corresponding No. 2 longitudinal tie rod on the front of T-shaped beam 23 Seat 32, No. 3 longitudinal tie rod seat 34, No. 4 longitudinal tie rod seat 36, and the axes of rotation of No. 1 longitudinal tie rod device 26, No. 2 longitudinal tie rod device 27, and No. 2 longitudinal and lateral movement turning device 29 are parallel to each other. No. 1 vertical actuator 25 and No. 2 vertical actuator 28 are installed under the left and right sides of the T-shaped beam, and the upper ends of No. 1 vertical actuator 25 and No. 2 vertical actuator 28 are connected with 1 No. 3 vertical connecting seat 33 and No. 2 vertical connecting seat 35 are bolted, and the lower ends of No. 1 vertical actuator 25 and No. 2 vertical actuator 28 are vertically fixedly connected to the foundation.

Referring to Fig. 5, the T-shaped crossbeam 23 is a box-type structural part, the T-shaped crossbeam 23 is viewed as a T-shape when viewed from above, the T-shaped crossbeam 23 is mainly regarded as a T-shaped, and the T-shaped crossbeam upper surface 30 is provided with a T-shaped groove. T-shaped beam 23 is respectively welded and fixed with No. Seat 35. The No. 1 longitudinal rod seat 31 is welded and fixed on the left end surface of the T-shaped beam 23; the No. 2 longitudinal rod seat 32, the No. 3 longitudinal rod seat 34, the No. 4 longitudinal rod seat 36 and the No. The longitudinal tie rod seat 32 and the No. 4 longitudinal tie rod seat 36 are respectively located on the left and right sides of the front of the T-shaped beam 23, similar to the left and right ends of the T-shape, and the No. 3 longitudinal tie rod seat 34 is fixedly installed on the front of the T-shaped beam 23 The lower part is similar to the T-shaped lower end; the bottom surface of the left and right ends of the front of the T-shaped beam 23 is symmetrically fixed by welding the No. 1 vertical actuator connecting seat 33 and the No. 2 vertical actuator connecting seat 35; the T-shaped beam The No. 2 longitudinal tie rod seat 32 on the left side of the front is adjacent to the left and right sides and perpendicular to the No. 1 longitudinal tie rod seat 31 on the left end face of the T-shaped beam, and is adjacent to and perpendicular to the No. 1 vertical actuator connection seat 33 up and down. No. 1 longitudinal tie rod seat 31 , No. 2 longitudinal tie rod seat 32 and No. 1 vertical actuator connecting seat 33 are perpendicular to each other and form a right angle, and are located at the left end of T-shaped beam 23 . The No. 4 longitudinal tie rod seat 36 on the upper right side of the T-shaped beam 23 is adjacent to and vertical to the No. 2 vertical actuator connection seat 35 on the bottom surface of the upper right end of the beam.

Referring to Fig. 4, the No. 1 longitudinal connection support 42 in the No. 1 vertical and lateral movement turning device 24 is connected by bolts, that is, the No. 1 longitudinal connection support 42 is fixed on the No. 1 longitudinal tie rod seat 31, and the No. 1 longitudinal and transverse movement turning The axis of rotation of No. 1 longitudinal and transverse excitation tie rod 41 in device 24 is perpendicular to No. 1 longitudinal tie rod seat 31 . Connect the No. 1 connection support 82 in the No. 1 longitudinal tie rod device 26 with bolts, that is, fix the No. 1 connection support 82 to the No. 2 longitudinal tie rod seat 32, and the No. 1 excitation pull rod 83 in the No. 1 longitudinal tie rod device 26 The axis of rotation of is perpendicular to No. 2 longitudinal tie rod seat 32. The No. 2 connecting support 84 in the No. 2 longitudinal tie rod device 27 is connected with bolts, that is, the No. 2 connecting support 84 is fixed to the No. 3 longitudinal tie rod seat 34, and the No. 2 excitation pull rod 85 in the No. 2 longitudinal tie rod device 27 The axis of revolution of is perpendicular to No. 3 longitudinal tie rod seat 34. The No. 2 longitudinal connection support 86 in the No. 2 vertical and lateral movement turning device 29 is bolted, that is, the No. 2 longitudinal connection support 86 is fixed to the No. 4 longitudinal tie rod seat 36, and the No. 2 longitudinal and transverse movement turning device 29 The axis of rotation of No. 2 longitudinal and transverse excitation tie rod 81 is perpendicular to No. 4 longitudinal tie rod seat 36 . Use bolts to connect the No. 1 vertical connection support 87 in the No. 1 vertical actuator 25, that is, to fix the No. 1 vertical connection support 87 to the No. 1 vertical connection seat 33, and the No. 1 vertical actuator The axis of revolution in 25 is perpendicular to No. 1 vertical connection seat 33. Use bolts to connect the No. 2 vertical connection support 88 in the No. 2 vertical actuator 28, that is, to fix the No. 2 vertical connection support 88 to the No. 2 vertical connection seat 35, and the No. 2 vertical actuator The axis of revolution in 28 is perpendicular to No. 2 vertical connecting seat 35.

The telescopic range of the No. 1 vertical actuator 25 is selected as ±300mm, and the No. 1 vertical connection support on the upper end of the No. 1 vertical actuator 25 is connected to the No. 1 vertical connection seat 33 by bolts. The lower end of the vertical actuator 25 is fixed on the embedded steel plate (foundation) by bolts. The No. 2 vertical actuator 28 has the same mechanical structure as the No. 1 vertical actuator 25 and is located under both ends of the T-shaped beam 23 . The vertical translation of the T-shaped crossbeam 23 along the Z-axis direction is realized by the co-direction movement of the No. 1 vertical actuator 25 and the No. 2 vertical actuator 28 . No. 1 vertical actuator 25 and No. 2 vertical actuator 28 move in opposite directions, that is, No. 1 vertical actuator 25 and No. 2 vertical actuator 28 stretch and shrink to realize the left and right sides of the T-shaped beam 23. One up and one down of the end, so as to realize the rotation movement of the T-shaped beam 23 around the Y-axis direction.

The No. 1 longitudinal tie rod device 26 includes a No. 1 longitudinal tie rod 83, two No. 1 spherical hinges 43 with the same structure, and two No. 1 connecting supports 82 with the same structure. The two ends of the No. 1 longitudinal tie rod 83 pass through the structure respectively. The same No. 1 spherical hinge 43 is connected to a No. 1 connecting support 82. The No. 2 longitudinal tie rod device 27 has the same mechanical structure as the No. 1 longitudinal tie rod device 26, but the installation positions are different; the No. 2 longitudinal tie rod device 27 includes a No. 2 longitudinal tie rod 85, Two No. 2 spherical hinges 89 with the same structure, and two No. 2 connecting supports 84 with the same structure. One end of two No. 2 longitudinal tie rod devices 27 and No. 1 longitudinal tie rod device 26 with the same structure is respectively connected to the bolts of No. 2 longitudinal tie rod seat 32 and No. 3 longitudinal tie rod seat 36 welded on the beam, and the other end is fixed in the foundation On the pre-embedded steel plate, ensure the horizontal setting of the No. 2 longitudinal tie rod device 27 and the No. 1 longitudinal tie rod device 26, and at the same time play the role of restraining the T-shaped beam 23.

Referring to FIG. 6 , the No. 1 vertical and horizontal motion deflection device 24 includes the No. 1 vertical and horizontal excitation rod device 37 , the No. 1 vertical and horizontal deflection assembly 38 , and the No. 1 double spherical hinge actuator device 39 . Among them: No. 1 vertical and horizontal excitation pull rod device 37 includes No. 1 vertical and horizontal excitation pull rod 41, No. 1 longitudinal connection spherical hinge support device 40; No. 1 longitudinal connection spherical hinge support device 40 is composed of No. 1 spherical hinge 43 and No. longitudinal connection support 42 forms. (No. 1 spherical hinge, No. 2 spherical hinge, and No. 3 spherical hinge have the same mechanical structure, but the installation positions are different)

The No. 1 longitudinal connection support 42 is fixedly connected with the No. 1 longitudinal tie rod seat 31 welded on the left end face of the upper end of the T-shaped beam 23 by bolts. One end of the No. 1 vertical and horizontal excitation rod 41 is rotationally connected with the No. 1 longitudinal connection support 42 by a No. 1 spherical hinge 43, and the No. 1 vertical and horizontal vibration rod 41 is placed horizontally, and the No. 1 vertical and horizontal vibration rod 41 The axis of rotation is perpendicular to the mounting surface of No. 1 longitudinal connection support 42 . The other end of the No. 1 vertical and horizontal excitation tie rod 41 is rotatably connected to one end of the No. 1 vertical and horizontal turning assembly 38 through another No. 1 ball joint 43, and the rotation centers of the two No. 1 ball joints 43 are on the same plane. The other (lower) end of No. 1 vertical and horizontal turning assembly 38 is connected to the upper end of No. 1 double spherical hinge actuator device 39 by No. 1 pin shaft 57 . No. 1 double spherical joint actuator device 39 is vertically installed, and the axis of rotation of the device is perpendicular to the foundation. In the embodiment, the range selected for the No. 1 double-spherical joint actuator device 39 is ±300mm, and the lower end of the No. 1 double-spherical joint actuator device 39 is fixed to the embedded plate of the foundation by bolts. The No. 1 vertical and horizontal turning assembly 38 in this test bench not only has the function of connecting the No. 1 vertical and horizontal excitation rod device 37 and the No. The vertical movement of 39 is transformed into the horizontal direction movement of No. 1 longitudinal and transverse excitation pull rod 41. Because of this structure, the No. 1 longitudinal and lateral motion turning device 24 is installed on the left end of the T-shaped beam 23, which can convert the vertical movement of the lower actuator of the T-shaped beam 23 into the horizontal movement of the longitudinal tie rod, thus realizing A motion condition in which the T-shaped beam 23 moves in translation along the X-axis direction.

The No. 2 vertical and horizontal motion deflection device 29 has the same mechanical structure as the No. 1 vertical and lateral motion deflection device 24 . The difference is that the installation location is different. The No. 2 vertical and horizontal motion turning device 29 is installed on the No. 4 longitudinal tie rod seat 36 on the right side of the upper end of the front of the T-shaped beam 23, and the No. 2 vertical and horizontal vibration pull rods are placed horizontally, and the rotation axis of the No. 2 vertical and horizontal vibration pull rods It is perpendicular to the mounting surface of No. 4 longitudinal tie rod seat 36. The No. 2 double-spherical hinge actuator device in the No. 2 vertical and lateral movement turning device 29 performs vertical movement, thereby realizing the horizontal translation of the No. 2 vertical and lateral excitation rod, and ensuring the T-shaped beam according to the installation position. 23 translation along the Y-axis direction.

The movement of the No. 1 vertical and horizontal movement turning device 24 forms a motion condition in which the T-shaped beam 23 translates along the X-axis direction; the movement of the No. 2 vertical and transverse movement turning device 29 forms a translational movement of the T-shaped beam 23 along the Y-axis direction motion conditions. The movement of the No. 1 vertical actuator 25 and the No. 2 vertical actuator 28 in the same direction realizes the movement condition of the test bench along the Z-axis direction. The reverse movement of the No. 1 vertical actuator 25 and the No. 2 vertical actuator 28 realizes the motion condition that the T-shaped beam 23 rotates around the Y axis. At the same time, it is ensured that the No. 1 longitudinal tie rod device 26 and the No. 2 longitudinal tie rod device 27 are set horizontally, and that their axes of rotation are all perpendicular to the front of the T-shaped beam 23, so as to restrain the T-shaped beam 23; therefore, through the above four The motion mode of the actuator forms the motion mode of the four degrees of freedom of the T-shaped beam 23, thereby driving the reliable test bench of the transmission system assembly of the high-speed EMU to simulate the four-degree-of-freedom motion and vibration conditions, so that the train can be well simulated in the actually run.

Referring to FIG. 7 to FIG. 8 , the No. 1 longitudinal coupling ball joint support device 40 in the No. 1 longitudinal and lateral motion turning device 24 includes a No. 1 longitudinal coupling support 42 and a No. 1 ball joint 43 . Wherein: No. 1 spherical joint 43 includes No. 1 joint bearing device 44 , No. 1 joint bearing inner ring retaining ring 45 and No. 1 longitudinal tie rod coupling shaft 46 . The No. 1 joint bearing device 44 is sleeved on the outer surface of the No. 1 longitudinal tie rod coupling shaft 46, and the No. 1 joint bearing device 44 is assembled and installed concentrically with the No. 1 longitudinal tie rod coupling shaft 46. At the same time, in order to prevent the No. 1 joint bearing device 44 from Shaking, the No. 1 joint bearing inner ring retaining ring 45 is respectively installed on both sides of the No. 1 joint bearing device 44, and the No. 1 joint bearing inner ring retaining ring 45 is concentric with the No. 1 longitudinal tie rod coupling shaft 46.

Referring to Figures 9 to 13, the No. 1 vertical and horizontal turning assembly 38 in the No. 1 vertical and horizontal movement turning device 24 includes the No. 1 vertical and horizontal turning arm support seat 49, the No. 1 vertical and horizontal turning arm 47 and the No. 1 turning Arm support shaft 48. No. 1 vertical and horizontal turning arm support seat 49 is fixed on the pre-embedded steel plate of the foundation through bolts to prevent No. shaking, thereby ensuring the stability of No. 1 vertical and horizontal turning assembly 38,

The No. 1 vertical and horizontal turning arm 47 is a V-shaped structural member, and the No. 1 vertical and horizontal turning arm 47 is composed of the V-shaped No. 1 vertical and horizontal turning arm front support plate 50 and the V-shaped No. 1 vertical and horizontal turning arm. Arm rear support plate 51, No. 1 vertically and horizontally turning arm right supporting rib 52, No. 1 vertically and horizontally turning arm left supporting rib 53 and cylindrical axle sleeve 54 are formed. Wherein: the V-shaped No. 1 vertical and horizontal turning arm front support plate 50 and the V-shaped No. 1 vertical and horizontal turning arm rear support plate 51 have the same structure. Three through holes are arranged at the two ends and the middle of the front support plate 50 of the No. 1 vertical and horizontal turning arm and the rear supporting plate 51 of the No. 1 vertical and transverse turning arm. The three through holes are supported in front of the No. 1 vertical and transverse turning arm. The plate 50 and the rear support plate 51 of the No. 1 vertical and horizontal turning arms are arranged in an isosceles triangle. The two through holes provided at the two ends have the same structure, but the diameter of the through hole in the middle is smaller. The rotation axis of the three through holes parallel to each other; the diameters of the three through holes in the embodiment are 90cm, 90cm, and 110cm respectively. The diameter of the round hole in the middle of the front support plate 50 of the V-shaped No. 1 vertical and horizontal turning arm and the rear support plate 51 of the No. 1 vertical and transverse turning arm is 110 cm, and the other two ends are 90 cm. The front support plate 50 of the No. 1 vertical and horizontal turning arm and the rear supporting plate 51 of the No. 1 vertical and horizontal turning arm are placed side by side in parallel, the left supporting rib 53 of the No. The supporting ribs 52 are sequentially placed between the front support plate 50 of the No. 1 vertical and horizontal turning arm and the rear supporting plate 51 of the No. 1 vertical and transverse turning arm from left to right, and are connected and fixed into one body by welding. The cylindrical shaft sleeve 54 and the front support plate 50 of the No. 1 vertical and horizontal turning arm and the rotation axis of the large round through hole in the middle of the No. 1 vertical and transverse turning arm rear support plate 51 are collinear, and the front support plate 50 of the No. 1 vertical and transverse turning arm The axes of rotation of the small through holes at the two ends of the rear support plate 51 of No. 1 vertical and horizontal folding arms are collinear. The left supporting rib 53 of the No. 1 vertical and horizontal turning arm and the right supporting rib 52 of the No. 1 vertical and horizontal turning arm are placed on the left and right sides of the cylindrical bushing 54 to strengthen the strength of the No. 1 vertical and horizontal turning arm 47, and then welded The connection is fixed in one piece.

The No. 1 vertical and horizontal turning arm support seat 49 is fixed on the pre-embedded steel plate in the foundation by bolts. It is used to constrain the movement direction of No. 1 vertical and horizontal turning assembly 38. The No. 1 vertical and horizontal turning arm support seat 49 is welded by the No. 1 support seat bottom plate 56 and two No. 1 side support plates 55 with the same structure. The No. 1 support seat bottom plate 56 is a rectangular flat structure. A row of bolt through holes is arranged on each side of the two wide sides of the structural member, and bolts are installed through two rows of parallel bolt through holes, so that the No. 1 vertical and horizontal turning arm support seat 49 is fixed on the embedded steel plate in the foundation. The two No. 1 side support plates 55 are triangular flat plate structures with the same structure, and a round through hole for installing the No. 1 turning arm support shaft 48 is provided at its upper end, and the two round through holes are concentric and have the same radius. Embodiment The middle radius is 110cm.

The No. 1 support shaft 57 is a cylindrical rod-like structure used to connect the lower end of the No. 1 vertical and horizontal turning arm 47 and the upper end of the No. 1 double-spherical hinge actuator device 39 .

The working principle of the four-degree-of-freedom electric circuit transmission system reliability test bench:

The lower surface (bottom surface) of the T-shaped beam 23 in the four-degree-of-freedom vibration simulation test device 5 in the four-degree-of-freedom electric circuit transmission system reliability test bench passes through the left and right symmetrical No. 1 vertical connection seats 33 and No. 2 respectively. The vertical connecting seat 35 is equipped with two No. 1 vertical actuators 25 and No. 2 vertical actuators 28 with the same structure. Two No. 1 longitudinal tie rod devices 26 and No. 2 longitudinal tie rod devices 27 with the same structure are installed on the front of the T-shaped beam 23 through the No. 2 longitudinal tie rod seat 32 and the No. 3 longitudinal tie rod seat 34 . Simultaneously, the front of the T-shaped crossbeam 23 is installed with a No. 2 longitudinal and lateral movement turning device 29 by No. 4 longitudinal tie rod seat 36 . The left end face of the T-shaped crossbeam 23 is equipped with a No. 1 longitudinal and lateral movement turning device 24 through the No. 1 longitudinal tie rod seat 31 which is adjacent to the No. 2 longitudinal tie rod seat 32 and is at right angles. Two No. 1 vertical actuators 25 with the same structure and No. 2 vertical actuators 28 move in the same direction to form a four-degree-of-freedom vibration test bench 10 in the four-degree-of-freedom vibration simulation test device 5 along the Z-axis direction Translational motion condition; the reverse motion of No. 1 vertical actuator 25 and No. 2 vertical actuator 28 forms a motion condition in which the four-degree-of-freedom vibration test bench 10 rotates around the Y axis; No. 1 vertical and horizontal The movement to the motion turning device 24 forms a motion condition in which the four-degree-of-freedom vibration test bench 10 moves along the X-axis direction; A motion case of translational motion in the axial direction. Therefore, through the movement of the No. 1 vertical actuator 25, the No. 2 vertical actuator 28, the No. 1 longitudinal and lateral motion turning device 24, and the No. 2 longitudinal and lateral movement turning device 29, the four-degree-of-freedom vibration test bench 10 is formed. The movement of the four degrees of freedom drives the reliable test bench of the high-speed EMU transmission system assembly to simulate the four-degrees of freedom movement and vibration conditions. On the T-shaped beam 23 of the four-degree-of-freedom vibration simulation experiment device 5 , the drive train test vibration shaft assembly 11 is placed. The frequency modulation motor (drive motor) in the torque test device 1 provides the driving torque for the entire transmission system, and the drive motor transmits the torque to the accompanying gearbox in the test device 8 of the gearbox assembly through the torque sensor and the conical connection flange axis 14. The test gear box cover 13 is set on the test gear box shaft 14 for interference fit, the large gear of the test gear box 13 is the low speed end of the test gear box 13, and the small gear of the test gear box 13 is the test gear At the high-speed end of the box 13, the large gear box of the accompanying test gear box 13 is a large gear, so the radius is larger than the radius of the pinion fixed by the supporting foot. When the gear is driven, the small gear rotates fast, so it is called the test gear 13 The small gear end is called the high speed end and the large gear is called the low speed end. The left end of the gearbox flexible coupling 2 is connected to the pinion (high-speed end) of the accompanying test gearbox 13, and the right end is connected to the pinion (high-speed end) of the tested gearbox 21. The torque is transmitted to the pinion (high speed end) through the large gear (low speed end) of the test gear box 13, and then the torque of the test gear box 13 is transmitted to the test gear box 21 through the gear box flexible coupling 2. The gear (high-speed end) is thus transmitted to the tested gearbox 21. Since the tested gearbox 21 and the tested gearbox shaft 20 are interference fit, it is then transmitted to the drive train test in the four-degree-of-freedom vibration simulation device 5 The vibration shaft assembly 11 is transmitted to the tested gearbox shaft 20 to the cross-shaft universal joint 3 , and then to the transition shaft 59 in the torque detection test device 4 . While the transition shaft 59 transmits the torque to the torque sensor, it also undertakes unstable factors such as bending moment and vibration caused by the cross-shaft universal joint 3, thereby ensuring data stability. The measurement accuracy is high and the torque sensor is well protected. The frequency-modulated motor (load motor) in the torque detection test device 4 is used as a system load, and provides resistance torque to the tested gearbox 21 according to the data fed back by the torque sensor.

The four-degree-of-freedom electric circuit transmission system reliability test bench mainly conducts reliability tests on gearboxes. Before the experiment, the gear box 21 under test and related test components were all installed on the test bench.

Adopted in the embodiment and the detail of the standard parts and components that can be adopted:

1. Two No. 1 vertical actuators 25 and No. 2 vertical actuators 28 with the same structure and two No. 1 vertical and horizontal motion turning devices 24 and No. 2 vertical and horizontal motion turning devices 29 with the same structure are double pistons For the series of rod constant velocity and equal stroke hydraulic cylinders, hydraulic cylinders of different tonnages can be used according to the weight and model of the tested gearbox 21 . The tonnage of the hydraulic cylinder used in this embodiment is 30 tons, and the piston stroke is ±300mm.

2. The cross-shaft universal joint 3 in this embodiment adopts the SWCBH cross-shaft universal joint.

Claims (8)

1. A four-degree-of-freedom electric circuit transmission system reliability test bench, including a torque test device (1), a gearbox flexible coupling (2), a cross-shaft universal coupling (3) and a torque detection device Test device (4); it is characterized in that, described four-degree-of-freedom electric circuit transmission system reliability test bench also includes four-degree-of-freedom vibration simulation test device (5); The four-degree-of-freedom vibration simulation test device (5) includes a drive train test vibration shaft assembly (11) and a four-degree-of-freedom vibration test bench (10); The drive train test vibration shaft assembly (11) is fixed on the four-degree-of-freedom vibration test bench (10) by bolts, and the rotation axis of the tested gearbox shaft (20) in the drive train test vibration shaft assembly (11) is in line with the four The long sides of the T-shaped beam upper surface (30) of the T-shaped beam (23) in the degree of freedom vibration test bench (10) are parallel. 2. According to the four-degree-of-freedom electric circuit type transmission system reliability test bench according to claim 1, it is characterized in that, the described transmission system test vibration shaft assembly (11) comprises a tested gearbox shaft (20), two The tested gear box bearing housing (19) with the same structure, the No. 2 conical connecting flange (62), two sets of the tested gear box bearing housing stop washer (63) and the tested gear box bearing housing with the same structure round nut (64); The two ends of the tested gearbox shaft (20) are respectively installed in the tested gearbox bearing seat (19) with the same structure as a rotational connection, and the shaft shoulders at the two ends of the tested gearbox shaft (20) are respectively connected to the tested gearbox bearing The end surface contact connection of the tested gearbox bearing seat labyrinth seal ring (65) on the seat (19), two sets of the tested gearbox bearing seat stop washer (63) with the same structure and the tested gearbox bearing seat round nut (17) is set on the end of the tested gearbox shaft (20) protruding from the outer side of the tested gearbox bearing seat (19), and the No. 2 conical connecting flange (62) is fixedly connected to the tested gearbox by double keys the left end of the shaft (20). 3. According to the four-degree-of-freedom power circuit transmission system reliability test bench according to claim 1, it is characterized in that, the four-degree-of-freedom vibration test bench (10) also includes No. 1 longitudinal and lateral motion turning device (24) , No. 1 vertical actuator (25), No. 1 longitudinal tie rod device (26), No. 2 longitudinal tie rod device (27), No. 2 vertical actuator (28) and No. 2 vertical and horizontal movement turning device (29 ); The right end of the No. 1 vertical and horizontal motion turning device (24) is connected with the No. 1 longitudinal tie rod seat (31) on the T-shaped beam (23) by bolts, and the upper end of the No. 2 vertical and horizontal motion turning device (29) is connected with the T-shaped beam ( No. 4 longitudinal tie rod seat (36) on 23) is connected by bolts, No. 1 longitudinal tie rod device (26) and No. 2 longitudinal tie rod device (27) and No. 2 longitudinal tie rod seat (32) on the T-shaped beam (23) The No. 3 longitudinal tie rod seat (34) is connected by bolts, and the No. 1 longitudinal tie rod device (26), the No. 2 longitudinal tie rod device (27) and the No. 2 vertical and horizontal vibration pull rod in the No. 2 vertical and horizontal movement turning device (29) The axes of rotation of (81) are parallel to each other; the upper end of No. 1 vertical actuator (25) and No. 2 vertical actuator (28) and the No. 1 vertical connection seat (33) on the T-shaped beam (23) It is bolted to No. 2 vertical connection seat (35), and the lower end of No. 1 vertical actuator (25) and No. 2 vertical actuator (28) are vertically fixedly connected to the foundation. 4. According to the four-degree-of-freedom electric circuit transmission system reliability test bench according to claim 3, it is characterized in that, the No. 1 longitudinal and lateral movement turning device (24) and the No. 2 longitudinal and transverse movement turning device (29) The structure is the same, the No. 1 vertical and horizontal motion turning device (24) includes the No. 1 vertical and horizontal vibration rod device (37), the No. 1 vertical and horizontal turning assembly (38) and the No. 1 double spherical hinge actuator device (39) ; The No. 1 vertical and horizontal excitation pull rod device (37) includes the No. 1 vertical and horizontal excitation pull rod (41) and the No. 1 longitudinal connection spherical hinge support device (40); the No. 1 longitudinal connection spherical hinge support device (40 ) consists of No. 1 spherical hinge (43) and No. 1 longitudinal connection support (42); One end of the No. 1 vertical and horizontal excitation rod (41) is rotationally connected with the No. 1 longitudinal connection support (42) by the No. 1 spherical hinge (43), and the other end of the No. 1 vertical and horizontal excitation rod (41) is connected by the second The No. 1 spherical hinge (43) is connected to one end of the No. 1 vertical and horizontal turning assembly (38), and the upper end of the No. 1 double spherical hinge actuator device (39) uses the No. 1 pin shaft (57) to connect with the No. 1 vertical and horizontal turning assembly. The other end of assembly (38) is connected. 5. The four-degree-of-freedom electric circuit transmission system reliability test bench according to claim 3, characterized in that, said No. 1 vertical and horizontal turning assembly (38) includes a No. 1 vertical and horizontal turning arm support seat (49 ), No. 1 vertical and horizontal turning arm (47) and No. 1 turning arm support shaft (48); The No. 1 vertical and horizontal turning arm (47) adopts the No. 1 turning arm support shaft (48) to be installed on the No. 1 vertical and horizontal turning arm support seat (49) for rotational connection; The No. 1 vertical and horizontal turning arm support base (49) is welded by the No. 1 support base plate (56) and two No. 1 side support plates (55) with the same structure. The No. 1 support base base plate (56) is a rectangular flat plate Structural parts, a row of bolt through holes are arranged on each side of the two wide sides of the rectangular flat structural part. The two No. 1 side support plates (55) are flat structural parts with the same structure. The two No. 1 side support plates (55) The upper end of each is provided with the round through hole that is used to install the No. 1 turning arm support shaft (48) with the same structure, and the axes of revolution of the round through holes at the upper end of two No. 1 side support plates (55) are collinear. 6. According to the four-degree-of-freedom electric circuit transmission system reliability test bench according to claim 5, it is characterized in that, the No. 1 vertical and horizontal turning arm (47) is a V-shaped structural part, and the No. 1 vertical and horizontal The turning arm (47) is composed of the front support plate (50) of the No. 1 longitudinal and transverse turning arm, the rear supporting plate (51) of the No. 1 longitudinal and transverse turning arm, the right support rib (52) of the No. 1 vertical and transverse turning arm, and the No. 1 vertical and transverse turning arm The left support rib plate (53) of the turning arm is composed of a cylindrical bushing (54); the front support plate (50) of the No. 1 vertical and horizontal turning arm and the rear supporting plate (51) of the No. 1 vertical and horizontal turning arm have the same structure, and the 1 The front support plate (50) of the No. 1 vertical and horizontal turning arm and the rear supporting plate (51) of the No. 1 vertical and transverse turning arm are provided with through holes at the two ends and the middle, and the two through holes provided at the two ends have the same structure. The axes of rotation of the three through holes are parallel to each other; the front support plate (50) of the No. 1 vertical and horizontal turning arm and the rear supporting plate (51) of the No. 1 vertical and horizontal turning arm are placed parallel and juxtaposed, and the left supporting rib of the No. 1 vertical and horizontal turning arm ( 53), the cylindrical bushing (54) and the right supporting rib (52) of the No. 1 vertical and horizontal turning arm are sequentially placed on the front supporting plate (50) of the No. 1 vertical and horizontal turning arm and the rear supporting plate of the No. 1 vertical and horizontal turning arm ( 51) are connected and fixed together by welding, the cylindrical bushing (54) and the front support plate (50) of the No. 1 vertical and horizontal turning arm and the rear support plate (51) of the No. The axes of revolution of the holes are collinear, and the axes of revolution of the small through holes at the rear support plate (51) two ends of No. 1 longitudinal and transverse folding arms are collinear. 7. according to the four-degree-of-freedom electric circuit transmission system reliability test bench of claim 1, it is characterized in that, described T-shaped crossbeam (23) is a box body class structural member, and T-shaped crossbeam upper surface (30 ) is provided with a T-shaped groove, the left end surface of the T-shaped beam (23) is welded and fixed on the No. With No. 4 longitudinal rod seat (36), the front lower part of the T-shaped beam (23) is welded and fixed with No. 3 longitudinal rod seat (34), and the bottom surface of the left and right ends of the T-shaped beam (23) front is welded and fixed with No. 1 vertical Connecting seat (33) and No. 2 vertical connecting seat (35); No. 2 longitudinal tie rod seat (32) on the T-shaped beam (23) and No. 1 longitudinal tie bar seat (31) are adjacently connected and perpendicular to each other, 2 The No. 4 longitudinal tie rod seat (32) and the No. 1 vertical actuator connecting seat (33) are adjacently connected up and down and vertically, and the No. 4 longitudinal tie rod seat (36) on the T-shaped beam (23) is connected to the No. 2 vertical connecting seat (35) are connected up and down adjacently and are perpendicular to each other. 8. According to the four-degree-of-freedom electric circuit transmission system reliability test bench according to claim 1, it is characterized in that, the described torque test device (1) is installed in parallel with the four-degree-of-freedom vibration simulation test device (5) On the foundation, the length of the long side of the rectangular bearing platform (6) in the torque test device (1) and the T-beam upper surface (30) of the T-beam (23) in the four-degree-of-freedom vibration simulation test device (5) The two sides are on the same plane, the gear box under test (21) of the drive train test vibration shaft assembly (11) in the four-degree-of-freedom vibration simulation test device (5) and the companion gearbox assembly test device (8) are The test gearbox (13) is connected by a gearbox flexible coupling (2), and the upper surface (30) of the T-shaped beam of the four-degree-of-freedom vibration simulation test device (5) is connected to the rectangular bearing platform of the torque test device (1). The upper working surface of (6) is on the same horizontal plane, and the parallel distance between them is 20-40cm. Shafts (3) are connected, and at the same time ensure that the cross-shaft universal joint (3) is placed horizontally, and its rotation axis and the drive train test vibration shaft assembly in the four degrees of freedom vibration simulation test device (5) ( 11) The rotation axis of the tested gearbox shaft (20) is collinear with the three lines of the rotation axis of the transition shaft (59) in the torque detection test device (4), and the rectangular bearing platform (6) in the torque test device (1) The upper surface of the rectangular support platform in the torque detection test device (4) is provided with several parallel T-shaped grooves along the direction parallel to the long side.