A large centrifugal roll frame static test device

Abstract

The present invention discloses a static test device for a large centrifugal rolling frame, which relates to the technical field of large machinery. It is composed of a top loading component, two groups of side support components and a bottom support component. First, the expansion sleeve is installed on the stator bearing seats on the left and right sides of the rolling frame, and the overall rolling frame structure with the expansion sleeve installed is installed in the top grooves of the left and right side support components through the expansion sleeve, and the translational degrees of freedom of the rolling frame in other directions except the stator bearing direction are restricted by the support component grooves; then the translational degrees of freedom of the rolling frame in the front and rear directions are restricted by the bottom support component, and finally the lateral test load or the axial load at the top is applied to the rolling frame through the top loading component, so as to achieve the purpose of verifying the overall force-bearing performance of the rolling frame. The present invention solves the problems of test installation and loading of the rolling frame. Through the device of the present invention, the test assembly process and assembly precision problems of the rolling frame are greatly simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of large machinery, and particularly relates to a static test device for a large centrifugal rolling frame. Background Art

[0002] Currently, with the development of aerospace industrial technology, various training devices for aerospace personnel have emerged in the ground environment. As the main load-bearing structure for the centrifugal test of aerospace personnel, the rolling frame needs to undergo a series of static load tests after production to verify various safety performances and safety margins of the device. Traditional rolling frames are generally made of aluminum or steel metal components. Due to their large self-weight, they will bring a large centrifugal load to the centrifuge bearings, thereby indirectly increasing the design requirements for the intermediate rotating shaft of the centrifuge, resulting in the phenomenon that the overall overload coefficient of the centrifuge fails to meet the allowable design requirements.

[0003] Currently, to reduce the self-weight of the rolling frame rotating main machine, the latest rolling frame structure generally uses carbon fiber composite materials. However, the corresponding design safety factor has increased instead while the self-weight is reduced. This requires designing a set of reasonable static load test devices that can verify the rolling frame structure, and this test device should have the advantages of being reusable, easy and reasonable to install, and convenient to operate.

[0004] Based on this, according to the force characteristics of the rolling frame, a set of static test devices for the rolling frame is designed. Summary of the Invention

[0005] The purpose of the present invention is to make up for the deficiencies of the existing technology and provide a static test device for a large centrifugal rolling frame.

[0006] The present invention is achieved through the following technical solutions:

[0007] A static test device for a large centrifugal rolling frame includes a top loading component, two groups of side support components, and a bottom support component. The top loading component and the bottom support component are respectively assembled with the upper and lower rotor bearing seats of the rolling frame, and the two groups of side support components are respectively assembled with the stator bearing seats on the left and right sides of the rolling frame.

[0008] The described side support assembly includes a tension sleeve, a tension sleeve cover plate, and a portal support frame. A bottom support is welded to the bottom of the portal support frame, and the bottom support is installed on the ground rail. The portal support frame has a double - door - opening structure form of left and right portal support frames. A part of the inner portal support frame is a fixed support frame, and the other part is a detachable movable support frame. The side walls of the fixed support frame and the movable support frame are fixedly connected by bolts. In the middle part of the top of the portal support frame, there is a frame reinforcement member with a rectangular groove. After installing the tension sleeve onto the stator bearing seat of the rolling frame, both ends of the tension sleeve are installed into the top rectangular grooves of the left and right portal support frames. The tension sleeve cover plate is installed on the top of the tension sleeve, and then the side wall of the movable support frame is fixedly installed with the side wall of the fixed support frame.

[0009] The described tension sleeve includes a tension pin, and a tension sleeve bearing is installed on the tension pin.

[0010] The described top loading assembly includes a top loading joint, a connecting standard part, a main load - bearing loading part, and a bottom back plate. The main load - bearing loading part is an L - shaped member. A lateral loading ear is welded on the side of the main load - bearing loading part. An opening 1 with the same diameter as the rotor bearing seat of the rolling frame is opened on the main installation surface of the main load - bearing loading part. A rotor seat sleeve is welded coaxially below the opening 1, and bolt holes are drilled outside the opening 1. The bolt holes are assembled with the top loading head through the connecting standard part. The bottom back plate is an L - shaped structure, located below the main load - bearing loading part and placed opposite to the main load - bearing loading part. An opening 2 with the same diameter as the rotor bearing seat is opened on the main panel of the bottom back plate. The side panel of the bottom back plate is fixedly connected with the side panel of the main load - bearing loading part.

[0011] The described top loading joint includes a top bottom plate and top loading ears welded on the top of the top bottom plate. The top bottom plate is fixedly connected with the main load - bearing loading part through the connecting standard part, and the connecting standard part is a screw.

[0012] The described bottom support assembly includes a threaded connecting rod, an arc - shaped panel, a hexagonal well - shaped seat, and a bottom plate. The hexagonal well - shaped seat is welded on the bottom plate. Bolt holes are opened on the six side walls of the hexagonal well - shaped seat. A connecting seat is welded on the inner wall of the arc - shaped panel, and a threaded hole is opened on the inner side surface of the connecting seat. The arc - shaped panels are respectively fixedly connected to the six side walls of the hexagonal well - shaped seat through the threaded connecting rods, and the bottom plate is connected to the ground rail by bolts.

[0013] The working principle of the present invention is:

[0014] First, install the expansion sleeve on the stator bearing seats on the left and right sides of the rolling frame, and install the overall rolling frame structure with the expansion sleeve installed on it into the top rectangular grooves of the left and right side support components through the expansion sleeve. The translational degrees of freedom of the rolling frame in other directions except the stator bearing direction are restricted by the rectangular grooves. Then, the translational degrees of freedom of the rolling frame in the front and back directions are restricted by the bottom support component. Finally, lateral test loads or axial loads at the top are applied to the rolling frame through the top loading component, so as to achieve the purpose of verifying the overall stress performance of the rolling frame.

[0015] The advantages of the present invention are as follows: (1) The present invention solves the static test problem of large composite rolling frames and fills the domestic corresponding test blank.

[0016] (2) The structure of the present invention solves the test installation problem and loading problem of the rolling frame. Through the device of the present invention, the test assembly process and assembly accuracy problem of the rolling frame are greatly simplified.

[0017] (3) In the present invention, the side support component is designed as a double-door hole support structure. One leg on the inner side of the side support component is designed as a detachable structure to solve the interference problem during the assembly process. While the double-door hole support structure effectively improves the overall support stability of the rolling frame, the assembly accuracy of the expansion sleeve can be effectively improved through the top groove of the double-door hole, so that the subsequent test data is more accurate and reliable.

[0018] (4) In the present invention, the bottom support component adopts a split-type adjustable structure form. During the assembly process, the arc-shaped panel can be retracted to one side of the well-shaped seat through the connecting rod to reduce the outer diameter and improve the assembly clearance. After the expansion sleeves on both sides of the rolling frame are installed into the grooves of the side support components on both sides, then the top surface of the arc-shaped panel is fitted with the inner wall of the rolling frame rotor bearing seat. On the one hand, it is very easy to install. On the other hand, during the stress process, the inner wall of the bottom rotor bearing seat is the overall stress component, which can effectively reduce the local stress state of the inner wall of the rotor bearing seat. Description of the Drawings

[0019] Figure 1 is the overall assembly schematic diagram of the rolling frame test device;

[0020] Figure 2 is the general drawing of the rolling frame test device;

[0021] Figure 3 is the structural schematic diagram of the rolling frame;

[0022] Figure 4 is the exploded view of the side support component;

[0023] Figure 5 is the structural schematic diagram of the expansion sleeve;

[0024] Figure 6 is the exploded view of the top loading component;

[0025] Figure 7 Schematic diagram of the bottom support assembly;

[0026] Figure 8 Schematic diagram of the overall assembly of the roll box test site during assembly;

[0027] The reference signs in the drawings are: 1. Roll box; 2. Loading hydraulic cylinder; 3. Top loading assembly; 4. Side support assembly; 5. Bottom support assembly; 6. Ground rail; 7. Stator bearing seat; 8. Rotor bearing seat; 9. Expansion sleeve; 10. Gantry support frame; 11. Movable support frame; 12. Expansion sleeve cover plate; 13. Bottom support base; 14. Expansion pin; 15. Expansion sleeve bearing; 16. Top loading joint; 17. Connecting standard part; 18. Main load-bearing loading part; 19. Bottom back plate; 20. Threaded connecting rod; 21. Arc-shaped panel; 22. Hexagonal well-shaped seat; 23. Bottom plate; 24. Fixed support frame; 25. Frame reinforcement with rectangular grooves; 26. Top loading lug; 27. Top bottom plate; 28. Rotor seat sleeve; 29. Side loading lug; 30. Connecting seat. Detailed implementation method

[0028] In this embodiment, a static test device for a large centrifugal roll box is combined with Figures 1 to 8 As shown, a static test device for a large centrifugal roll box mainly consists of a top loading assembly 3, two groups of side support assemblies 4 and a bottom support assembly 5. Among them, the top loading assembly 3 and the bottom support assembly 5 are respectively assembled with the upper and lower rotor bearing seats 8 of the roll box 1, and the two groups of side support assemblies 4 are assembled with the stator bearing seats 7 on the left and right sides of the roll box 1.

[0029] For the static test device of the large centrifugal roll box, the side support assembly 4 is composed of an expansion sleeve 9, a gantry support frame 10, and an expansion sleeve cover plate 12. Among them: a bottom support base 13 is welded to the bottom of the gantry support frame 10, the bottom support base 13 is installed on the ground rail 6, the gantry support frame 10 includes a double-door opening structure of the left and right gantry support frames, a part of the inner gantry support frame is a fixed support frame 24, and the other part is a detachable movable support frame 11. The side walls of the fixed support frame 24 and the movable support frame 11 are fixedly connected by bolts. A frame reinforcement 25 with a rectangular groove is provided in the middle of the top of the gantry support frame 10. After installing the expansion sleeve 9 onto the stator bearing seat 7 of the roll box 1, both ends of the expansion sleeve 9 are then installed onto the left and right gantry support frames 10, and an expansion sleeve cover plate 12 is installed on the top of the expansion sleeve 9 to limit the translational displacement of the expansion sleeve 9 of the roll box 1; finally, the side wall of the movable support frame 11 is installed with the side wall of the gantry support frame 10.

[0030] The expansion sleeve 9 described above includes an expansion pin shaft 14, and an expansion sleeve bearing 15 is installed on the expansion pin shaft 14.

[0031] For the large centrifugal rolling frame static test device described above, after the top loading assembly 3 is assembled, it is installed at the top rotor bearing seat 8 of the rolling frame 1. The top loading assembly 3 is composed of a top loading joint 16, a connecting standard part 17, a main load-bearing loading part 18 and a bottom back plate 19. Among them: The main load-bearing loading part 18 is an L-shaped member. A lateral loading ear 29 is welded on the side of the L-shaped member. An opening 1 with the same diameter as the rotor seat bearing is opened on the main installation surface of the L-shaped member. A rotor seat sleeve 28 is welded coaxially below the opening 1. And bolt holes are drilled outside the opening 1, and these bolt holes are assembled with the top loading joint 16; The bottom back plate 19 is also an L-shaped structure. An opening 2 with the same diameter as the rotor bearing seat 8 is also opened on the main panel of the L-shaped member. The side panel of the L-shaped member is assembled with the main load-bearing loading part 18.

[0032] The top loading joint 16 described above includes a top bottom plate 27 and a top loading ear 26 welded on the top of the top bottom plate 27. The top loading ear 26 is connected to the loading hydraulic cylinder 2. The top bottom plate 27 is fixedly connected to the main load-bearing loading part 18 through the connecting standard part 17. The connecting standard part 17 is a screw.

[0033] For the large centrifugal rolling frame static test device described above, the bottom support assembly 5 is composed of a threaded connecting rod 20, an arc-shaped panel 21, a hexagonal well-shaped seat 22 and a bottom plate 23. The hexagonal well-shaped seat 22 is welded on the bottom plate 23. Bolt holes are opened on the six side walls of the hexagonal well-shaped seat 22. A connecting seat 30 is welded on the inner wall of the arc-shaped panel 21. A threaded hole is opened on the inner side surface of the connecting seat 30. Arc-shaped panels 21 are respectively fixedly connected to the six side walls of the hexagonal well-shaped seat 22 through threaded connecting rods 20. The bottom plate 23 is connected to the ground rail 6 through bolts.

[0034] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A static testing device for a large centrifugal rolling frame, characterized in that: It includes a top loading component, two sets of side support components and a bottom support component. The top loading component and the bottom support component are respectively assembled with the upper and lower rotor bearing seats of the rolling frame, and the two sets of side support components are respectively assembled with the stator bearing seats on the left and right sides of the rolling frame; The side support component includes a shrink disc, a shrink disc cover plate and a portal support frame. A bottom support base is welded to the bottom of the portal support frame, and the bottom support base is installed on the ground rail. The portal support frame has a double-door opening structure form of left and right portal support frames. A part of the inner portal support frame is a fixed support frame, and the other part is a detachable movable support frame. The side walls of the fixed support frame and the movable support frame are fixedly connected by bolts. A frame reinforcement member with a rectangular groove is provided in the middle of the top of the portal support frame. After installing the shrink disc to the stator bearing seat of the rolling frame, the two ends of the shrink disc are installed into the top rectangular grooves of the left and right portal support frames. The shrink disc cover plate is installed on the top of the shrink disc, and then the side wall of the movable support frame is fixedly installed with the side wall of the fixed support frame.

2. The static testing device for a large centrifugal rolling frame according to claim 1, characterized in that: The shrink disc includes a shrink pin shaft, and a shrink disc bearing is installed on the shrink pin shaft.

3. A static testing device for a large centrifugal rolling frame according to claim 1, characterized in that: The top loading component includes a top loading joint, a connecting standard part, a main load-bearing loading member and a bottom back plate. The main load-bearing loading member is an L-shaped member. A lateral loading lug is welded on the side of the main load-bearing loading member. An opening one with the same diameter as the rotor bearing seat of the rolling frame is opened on the main installation surface of the main load-bearing loading member. A rotor seat sleeve is welded coaxially below the opening one, and bolt holes are drilled outside the opening one. The bolt holes and the top loading head are assembled through the connecting standard part; The bottom back plate is an L-shaped structure, located below the main load-bearing loading member and placed opposite to the main load-bearing loading member. An opening two with the same diameter as the rotor bearing seat is opened on the main panel of the bottom back plate, and the side panel of the bottom back plate is fixedly connected with the side panel of the main load-bearing loading member.

4. A static testing device for a large centrifugal rolling frame according to claim 3, characterized in that: The top loading joint includes a top bottom plate and a top loading lug welded on the top bottom plate. The top bottom plate is fixedly connected with the main load-bearing loading member through the connecting standard part, and the connecting standard part is a screw.

5. A static testing device for a large centrifugal rolling frame according to claim 1, characterized in that: The bottom support component includes a threaded connecting rod, an arc-shaped panel, a hexagonal well-shaped seat and a bottom plate. The hexagonal well-shaped seat is welded on the bottom plate. Bolt holes are opened on the six side walls of the hexagonal well-shaped seat. A connecting seat is welded on the inner wall of the arc-shaped panel, and a threaded hole is opened on the inner side surface of the connecting seat. The arc-shaped panel is fixedly connected to the six side walls of the hexagonal well-shaped seat through the threaded connecting rod respectively, and the bottom plate is connected to the ground rail by bolts.

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