CN117554053A - Rotor test support and test method - Google Patents

Abstract

The application discloses a rotor test support and a test method, which belong to the technical field of aero-engine rotors, wherein the rotor test support comprises a platform, a support in sliding fit with the platform and a positioning structure for fixing the support on the platform; a boss structure is arranged on the platform along the length direction, and positioning surfaces are symmetrically arranged on the boss structure along the middle section; the support is distributed with at least two along the length direction of the boss structure, the support comprises an upper half part and a lower half part which are detachably connected, the upper half part and the lower half part are respectively provided with a semicircular groove, the semicircular grooves of the upper half part and the lower half part are combined to form a circular mounting hole for accommodating a rotor shaft bearing seat, the lower half part is provided with a positioning groove, and the positioning groove is matched with the positioning surface for radial positioning; the positioning structure comprises a positioning rod, wherein the positioning rod comprises a rod part and a head part with the cross section larger than that of the rod part. The rotor test device has the advantages that repeated centering and test efficiency effects are needed when rotors with different structures are tested in a rotor test.

Description

Rotor test support and test method

Technical Field

The invention relates to the technical field of aero-engine rotors, in particular to a rotor test support and a test method.

Background

The rotor is an important part of the rotary machine, the importance of the rotor is particularly outstanding for an aeroengine, and the modern aeroengine pursues higher and better performance, so that the rotating speed of the rotor is higher and higher, the structure is more and more complex, the working environment is more severe, the rotor must be subjected to a dynamic test before the engine is assembled, various faults often occur in the test process, and the test safety is affected.

Rotor misalignment is a common fault during rotor testing, and rotor misalignment is when the axis of the rotor in a rotary machine is not coincident or coincident with the ideal central axis. This may be due to errors in the manufacturing process, assembly problems or wear in operation. Such misalignment may lead to vibrations, noise and reduced efficiency in the operation of the machine, and in order to reduce misalignment faults, special centering tools are often designed for different supports, special instruments are used for centering the supports, and multi-stage centering operations are required for multi-pivot rotors.

The implementation scheme of the prior art is as follows: firstly, mounting a support on a tester platform, and testing a rotor to determine the axial position of the support; secondly, dismantling the rotor, installing a centering tool, and centering the support; and thirdly, fixing a support and installing a rotor. If the rotor is replaced by a rotor with other structures and different fulcrum spans, the original installed test support needs to be removed, and the axial position determination and centering work is carried out again. In the prior art, the steps are complicated, when the rotor is replaced by a rotor with other structures and different supporting point spans, the original installed test support needs to be removed, and the axial position determination and centering work is carried out again, so that the test efficiency is greatly influenced.

Disclosure of Invention

The invention provides a rotor test support and a test method, which are used for solving the technical problems that repeated centering and lower test efficiency are required when the rotor with different structures is tested in the existing rotor test.

According to one aspect of the present invention, there is provided a rotor test stand comprising a platform, a stand slidably engaged with the platform, and a locating structure for securing the stand to the platform; a boss structure is arranged on the platform along the length direction, and positioning surfaces are symmetrically arranged on the boss structure along the middle section; the support is distributed with at least two along the length direction of the boss structure, the support comprises an upper half part and a lower half part which are detachably connected, the upper half part and the lower half part are respectively provided with a semicircular groove, the semicircular grooves of the upper half part and the lower half part are combined to form a circular mounting hole for accommodating a rotor shaft bearing seat, the lower half part is provided with a positioning groove, and the positioning groove is matched with the positioning surface for radial positioning; the positioning structure comprises a positioning rod, the positioning rod comprises a rod portion and a head portion with the cross section larger than that of the rod portion, a positioning groove parallel to the boss structure is formed in the platform, the positioning groove comprises a groove bottom matched with the rod head portion of the positioning rod and a groove neck matched with the rod portion of the positioning rod, and the rod portion penetrates through the lower half portion of the support and is in threaded connection with a positioning nut.

Optionally, the first upper half portion includes coaxial setting and can dismantle first upper half circular arc limit and the second upper half circular arc limit of connection, the second lower half portion includes coaxial setting and can dismantle first lower half circular arc limit and the second lower half circular arc limit of connection, and first upper half circular arc limit is unanimous with first lower half circular arc limit internal diameter, and second upper half circular arc limit is unanimous with second lower half circular arc limit's internal diameter, and second upper half circular arc limit's external diameter is unanimous with first upper half circular arc limit's internal diameter.

Optionally, the lower half is provided with the oil gallery, set up the oil gallery that corresponds with the oil gallery on the boss structure of platform, the oil gallery lower part is opened and is used for the oil drain hole with the tester oil tank intercommunication.

Optionally, the symmetry is provided with first kidney-shaped hole on the platform, wear to be equipped with T type bolt in the first kidney-shaped hole, T type bolt's head is used for being connected with the T type groove on the tester platform, and T type bolt's pole portion passes first kidney-shaped hole and threaded connection have lock nut.

Optionally, sensor mounting holes are formed in the upper part and the side end faces of the upper part, and the sensor mounting holes are used for mounting vibration acceleration sensors for monitoring vibration of the test support.

Optionally, corresponding pin holes are formed in the upper half and the lower half, positioning pins are arranged in the pin holes in a penetrating mode, and the upper half and the lower half are connected through bolts.

Optionally, the second upper semicircular edge and the second lower semicircular edge are provided with a plurality of groups according to the inner diameter size, and the second upper semicircular edge and the second lower semicircular edge are determined according to the outer diameter size of the upper bearing of the rotor.

Optionally, both sides of platform and lower half all threaded connection have rings, rings symmetric distribution is in boss structure both sides.

According to another aspect of the present invention, there is also provided a rotor testing method comprising the steps of: the method comprises the steps of initially installing a platform on a tester, and roughly adjusting and determining the position of the platform; sliding the support along the length direction of the platform, translating the support from two ends of the platform to preset positions, determining the preset positions according to the span of the rotor fulcrum, and fastening the support on the platform to form a whole with the platform; centering operation is carried out on the support by using a centering instrument, and the centering effect is achieved by adjusting the position of the platform; after centering is completed, the platform is completely fixed on the tester; the bearing of the rotor is mounted on the support, and one rotor test is completed.

Optionally, after completing one rotor test, the method further comprises the following steps: removing the first upper semicircular edge and the second upper semicircular edge, and taking out the rotor after the test is completed; the second lower semicircular arc edge is detached, and the second lower semicircular arc edge with corresponding specification is installed according to the outer diameter of the bearing of the rotor to be tested; sliding the support along the length direction of the platform, translating the support from two ends of the platform to preset positions, determining the preset positions according to the span of a rotor fulcrum to be tested, and fastening the support on the platform to form a whole with the platform; the rotor to be tested is mounted on a support, and a corresponding second upper semicircular edge and a corresponding first upper semicircular edge are sequentially mounted; and carrying out a rotor test on the rotor to be realized.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the invention, after the centering of the platform position and the support is ensured to meet the requirement only in the first centering, repeated centering and positioning are not needed in the follow-up, because the platform and the support perform centering operation in the first installation, and after the centering operation meets the requirement, no matter what rotor is tested, the platform is fixed, because the rotor is fixed with the platform through the support, the support can be moved along the platform according to the rotors with different supporting point spans, and the support is not required to be disassembled, repositioned and centered; furthermore, to the rotor of different grade type, need not repeatedly carry out dismouting and hoist and mount, promoted work efficiency by a wide margin, reduced the wearing and tearing of experimental frock, reduced personnel's installation, hoist and mount in-process security risk, effectively guaranteed the safety of test personnel.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a front view of a preferred embodiment of the present invention;

fig. 2 is a left side view of the preferred embodiment of the present invention.

Legend description:

1. a platform; 2. a support; 11. a T-shaped groove; 12. a positioning surface; 13. chamfering; 14. an oil return groove; 15. a first kidney-shaped aperture; 16. chamfering the root; 21. an upper half; 22. a lower half; 211. a first upper semicircular edge; 212. a second upper semicircular edge; 213. installing a threaded hole; 214. a through hole; 216. a sensor mounting hole; 221. an oil return hole; 222. a second kidney-shaped aperture; 223. a positioning groove; 224. locking the threaded hole; 100. a T-shaped bolt; 200. a gasket; 300. a lock nut; 400. a hanging ring; 500. an inner hexagon bolt; 600. a positioning pin; 700. and a positioning rod.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.

The present application is described in further detail below in conjunction with figures 1-2.

The embodiment of the application discloses a rotor test support and a test method.

Referring to fig. 1, the rotor test stand includes a platform 1, a stand 2 slidably fitted with the platform 1, and a positioning structure for fixing the stand 2 to the platform 1. Wherein the platform 1 is used for being fixedly arranged on a tester, and the support 2 is used for supporting a bearing of a rotor to be tested.

Referring to fig. 1 and 2, a boss structure is provided on the platform 1 in a length direction, and positioning surfaces 12 are symmetrically provided on the boss structure along a middle section. It will be appreciated that the boss structure may be provided along the entire length of the platform 1, or may be provided only at a portion of the platform 1. The support 2 has two at least along boss structure length direction distribution, because two at least supports 2 are supported the bearing at rotor both ends respectively and can make the rotor keep stable rotation, be provided with more bearings on the rotor, can set up the support 2 that corresponds quantity and carry out one-to-one to the bearing to promote the stability of rotor in the test process.

The support 2 comprises an upper half part 21 and a lower half part 22 which are detachably connected, the lower half part 22 is provided with a positioning groove 223, and the positioning groove 223 is matched with the positioning surface 12 for radial positioning. Optionally, the positioning surface 12 of the boss structure is provided with a chamfer 13 and a back-gouging is performed at the root of the chamfer 13, so that the lower half 22 of the mounting support 2 is ensured not to interfere. The support 2 can slide on the platform 1 through the cooperation of the boss structure and the positioning groove 223, and the central positions of the support 2 and the platform 1 cannot be changed in the process of adjusting the position of the support 2. At the first installation, the platform 1 and the support 2 are both accurately centred. Once the centering requirements are met, the platform 1 can be used for testing of different rotors after being fixed without repeated centering. The centring of the support 2 is ensured by the locating surface 12 with the platform 1. Once the platform 1 is fixed, the positioning relationship between the support 2 and the platform 1 is not destroyed, so that when testing different rotors, even if the position of the support 2 needs to be adjusted, the centering operation does not need to be repeated, and the efficiency of the test can be improved.

The upper and lower halves 21, 22 are provided with semi-circular grooves, respectively, the semi-circular grooves of the upper and lower halves 21, 22 in combination form a circular mount for receiving the bearing housing of the rotor shaft. The upper half 21 and the lower half 22 are detachably connected, and when the rotor bearing is to be attached and detached, the upper half 21 needs to be detached first. In a specific embodiment, the upper half 21 and the lower half 22 are connected by a socket head cap screw 500, the upper half 21 is provided with a through hole 214, the lower half 22 is provided with a locking screw hole 224, and the socket head cap screw 500 is screwed into the locking screw hole 224 through the through hole 214. The socket head cap bolts 500 are symmetrically distributed at both sides of the upper half portion 21 to improve the stability of connection. Optionally, the upper half 21 and the lower half 22 are provided with corresponding pin holes, and the pin holes are penetrated with positioning pins 600. When the upper half 21 is assembled to the lower half 22, the positioning pins 600 are used to position the upper half 21 and the lower half 22, and then the bolts are used to lock the upper half 21 and the lower half 22, so that the positioning accuracy can be improved.

The upper half portion 21 includes a first upper semicircular arc edge 211 and a second upper semicircular arc edge 212 which are coaxially arranged and detachably connected, the lower half portion 22 includes a first lower semicircular arc edge and a second lower semicircular arc edge which are coaxially arranged and detachably connected, the inner diameters of the first upper semicircular arc edge 211 and the first lower semicircular arc edge are consistent, the inner diameters of the second upper semicircular arc edge 212 and the second lower semicircular arc edge are consistent, and the outer diameter of the second upper semicircular arc edge 212 is consistent with the inner diameter of the first upper semicircular arc edge 211.

By the above scheme, the different semicircular arc edges of the upper half part 21 are matched with the corresponding parts of the lower half part 22, and the support 2 can be suitable for rotors with different diameter ranges. Such an arrangement is both easy to install and to disassemble and allows an efficient saving of space and costs, since it is not necessary to equip the rotor with separate seats 2 for each diameter. In addition, the circular arc edges with different diameters can ensure better rotor matching and support, and stability and centering accuracy of the test are improved. In summary, this design, through its flexibility and economy, increases the practicality of the support 2, while ensuring the accuracy and reliability of the test operation.

Optionally, the first upper semicircular edge 211 and the second upper semicircular edge 212 are provided with mounting threaded holes 213 and are fixedly connected through bolts, and the second upper semicircular edge 212 and the second lower semicircular edge are also connected through bolts. The screw connection allows easy detachment and reattachment, which makes it easy to adjust the support 2 or to replace the components.

The second upper semicircular edge 212 and the second lower semicircular edge are provided with a plurality of groups according to the inner diameter size, and the second upper semicircular edge 212 and the second lower semicircular edge are determined according to the outer diameter size of the upper bearing of the rotor. Such a design allows the second upper and lower semicircular edges 212 and 212 to be flexibly matched according to the outer diameter size of the bearing on the rotor, ensuring a highly customized and accurate fit. By providing a plurality of sets of second upper semicircular edges 212 and second lower semicircular edges of different inner diameter sizes, the support 2 can accommodate bearings of various specifications, providing wider applicability. This design not only increases the versatility of the support 2, but also ensures accurate positioning and stable support of the rotor on the support 2, thus improving the accuracy and reliability of the overall test.

The positioning structure comprises a positioning rod 700, the positioning rod 700 comprises a rod portion and a head portion with the cross section larger than that of the rod portion, a positioning groove 223 parallel to the boss structure is formed in the platform 1, the positioning groove 223 comprises a groove bottom matched with the head portion of the positioning rod 700 and a groove neck matched with the rod portion of the positioning rod 700, and the rod portion penetrates through the lower half portion 22 of the support 2 and is in threaded connection with a positioning nut.

Through the scheme, the lower half part 22 is provided with the second kidney-shaped hole 222 for the rod part to penetrate, the rod part of the positioning rod 700 and the head part with a larger cross section are matched with the groove bottom and the groove neck of the positioning groove 223, the accurate position of the support 2 on the platform 1 is ensured, and the rod part penetrates through the lower half part 22 of the support 2 and is in threaded connection with the positioning nut to realize stable fixation. This structure not only provides a strong positioning accuracy, but also allows a quick and reliable mounting or adjustment of the support 2, thereby improving the operating efficiency and stability of the whole device. Through such design, the support 2 can be ensured to keep consistent positioning in the process of multiple installation and use, so that the accuracy and the repeatability of experimental data are ensured.

The lower half 22 is provided with an oil return hole 221, an oil return groove 14 corresponding to the oil return hole 221 is formed in the boss structure of the platform 1, and an oil drain hole communicated with the tester oil tank is formed in the lower portion of the oil return groove 14. The main function of this design is to achieve efficient oil management and maintenance. The oil return hole 221 of the lower half 22 and the oil return groove 14 of the platform 1 form an oil return path, so that oil generated in the rotor test process can smoothly flow back to the oil groove 14 and then flow into an oil tank of the tester through the oil drain hole. The test device is beneficial to keeping the test area clean, preventing oil from accumulating and overflowing, ensuring the recycling of the oil and reducing the waste of the oil. In addition, good oil management is also beneficial to reducing potential environmental pollution risks and maintenance costs, while maintaining the stability and reliability of long-term operation of the equipment.

The platform 1 is symmetrically provided with a first waist-shaped hole 15, a T-shaped bolt 100 is penetrated in the first waist-shaped hole 15, the head of the T-shaped bolt 100 is used for being connected with a T-shaped groove 11 on the tester platform 1, and the rod part of the T-shaped bolt 100 penetrates through the first waist-shaped hole 15 and is in threaded connection with a locking nut 300.

Through the scheme, the first kidney-shaped hole 15 allows the T-shaped bolt 100 to be horizontally adjusted within a certain range so as to adapt to the requirements of different positions, and the head of the T-shaped bolt 100 is connected with the T-shaped groove 11 on the tester platform 1, so that firm fixation is ensured. After the rod portion passes through the first kidney-shaped hole 15, the rod portion is fastened through the lock nut 300, so that stability of the tester is guaranteed, quick installation and disassembly are facilitated, and optionally, a gasket 200 is further arranged between the T-shaped bolt 100 and the lock nut 300.

Alternatively, a quick clamp or modular interface may be used in place of the first kidney 15 and T-bolt 100 configuration. The quick clamp allows for faster installation and removal, while the modular interface provides for better versatility and flexibility. For example, the use of a magnetic mount may allow for quick positioning and securing, or the use of hydraulic or pneumatic clamping systems to improve installation efficiency and stability. These alternatives may reduce setup time and improve operability and adaptability of the test stand.

And sensor mounting holes 216 are formed in the right upper part and the side end faces of the upper half part 21, and the sensor mounting holes 216 are used for mounting vibration acceleration sensors for monitoring vibration of the test support. By installing a vibration acceleration sensor, the vibration condition of the support 2 during the test is monitored and analyzed. By providing the sensor mounting holes 216 directly above and to the side end surfaces of the upper half 21, vibration sensors can be flexibly mounted at different positions, thereby acquiring more comprehensive vibration data. This helps to identify and analyze in time possible problems in the operation of the support 2, such as unbalance, misalignment or bearing failure, etc., and thus ensures the accuracy of the test and long-term stable operation of the device. In addition, the installation mode is convenient for maintenance and replacement of the sensor, and efficiency and convenience of the test are improved.

The both sides of platform 1 and lower half 22 all threaded connection have rings 400, rings 400 symmetric distribution is in boss structure both sides. The hanging rings 400 are symmetrically distributed on two sides of the platform 1 and the lower half 22 and are fixed in a threaded connection mode, and the design is mainly used for facilitating the carrying and positioning of the whole device. The presence of the lifting ring 400 allows easy handling of the whole device using lifting equipment such as a crane or forklift pin-hole, especially when it is required to be moved to different working positions or for maintenance. The symmetrically arranged hanging rings 400 help to maintain balance during handling, and avoid tilting or instability of the device during lifting, thereby ensuring safety during handling. In addition, the threaded connection facilitates removal of the bail 400 when no handling is required, to reduce space occupation or avoid unnecessary obstructions.

According to another aspect of the present invention, there is also provided a rotor testing method comprising the steps of:

s100: the platform 1 is initially installed on a tester, and the position of the platform 1 is roughly determined.

The preliminary mounting platform 1 is on a tester and performs coarse adjustment comprising: the platform 1 is first placed on the tester and manually adjusted to a substantially predetermined position. The alignment of the platform 1 with the tester is then checked by means of the gauge and the necessary fine adjustment of the position is performed. Next, the platform 1 is temporarily secured using bolts or other fasteners, ensuring that it does not move until a subsequent fine adjustment. This stage mainly ensures that the platform 1 is in the correct position, providing the basis for a later accurate adjustment.

S200: the support 2 is slid along the length direction of the platform 1, the support 2 is translated from both ends of the platform 1 to preset positions determined according to the rotor fulcrum span, and the support 2 is fastened to the platform 1 so that the support 2 and the platform 1 form a whole.

The preset position of the support 2 is determined according to the span of the rotor fulcrum. The support 2 is then slid along the length of the platform 1 until it reaches this preset position. During the movement of the support 2, it is necessary to ensure that it is smooth and does not deviate from the trajectory. Once the support 2 reaches the predetermined position, the support 2 is fixed to the platform 1 using suitable fastening means such as bolts and nuts. After fastening, it should be checked whether there is a firm lack of play between the support 2 and the platform 1, ensuring that they form a stable whole, providing the necessary stability and precision for the subsequent test operations.

S300: the centering instrument is used for centering the support 2, and the centering effect is achieved by adjusting the position of the platform 1.

First, a centering instrument is installed and set, which includes a laser centering tool or other precision centering device, to align the support 2 with the target location to be centered. The centring device is then activated, according to its indication, observing the deviation of the support 2 with respect to a predetermined axis or reference point. The position of the platform 1 is then adjusted step by step, depending on the readings of the centring instrument, which may involve moving the platform 1 horizontally or adjusting the height and angle of the support 2 to reduce the deviation. Multiple fine adjustments and re-detection may be required during centering until satisfactory centering results are achieved. Once centering is completed, it is again confirmed that the support 2 is firmly fixed, ensuring that its centered condition is maintained in the following operation. This process is a critical step in ensuring test accuracy and proper operation of the equipment.

S400: after centering is completed, the platform 1 is completely fixed on the tester.

The contact point of the platform 1 with the tester was checked to confirm that there was no misalignment or looseness. Each of the fastening points is then finally fastened using the required fasteners such as bolts, nuts, washers, etc. The torque of each fastener is evenly and gradually increased using a wrench or other suitable tool to ensure that the platform 1 is evenly and securely fastened to the tester. During the fastening, it is important to fasten diagonally across to prevent uneven stress and skew. Finally, it is checked again whether all fasteners have been secured in place and it is confirmed that the platform 1 is stably and correctly mounted on the tester. This ensures that the platform 1 remains stable and safe during subsequent test operations.

S500: the bearing of the rotor is mounted on the support 2 and a rotor test is completed.

The bearing should be accurately placed in a predetermined position of the support 2 to ensure a flat and tight fit with the engagement surface of the support 2. The bearing should then be firmly fixed to the support 2 using bolts or other fasteners, while ensuring that the bearing does not shift or tilt during the fixing process. After this, the rotor hub should be gently fitted into the bearing and checked for centering of the rotor and free rotation. Finally, after these steps are completed, a test run is performed to see whether the rotor is stable during operation, whether there is abnormal vibration or noise, and whether the rotor is running on a predetermined trajectory.

S600: the first upper semicircular edge 211 and the second upper semicircular edge 212 are removed, and the rotor after the test is taken out.

First, it is ensured that the rotor has completely stopped running and is in a safe state. Subsequently, the fasteners or locking mechanisms, such as bolts, securing the first and second upper semicircular edges 212 are progressively loosened or removed. Any damage to the rotor or the support 2 during the disassembly process needs to be avoided. After the first upper semicircular edge 211 and the second upper semicircular edge 212 are removed, the rotor can be lifted out of the support 2.

S700: and disassembling the second lower semicircular arc edge, and installing the second lower semicircular arc edge with corresponding specification according to the bearing outer diameter of the rotor to be tested.

S800: the support 2 is slid along the length direction of the platform 1, the support 2 is translated from the two ends of the platform 1 to preset positions which are determined according to the span of the rotor fulcrum to be tested, and the support 2 is fastened on the platform 1 so that the support 2 and the platform 1 form a whole.

The preset position of the support 2 on the platform 1 is determined according to the span data of the new rotor fulcrum. Then, the support 2 is slid gently along the length of the platform 1, and translated from both ends of the platform 1 to this preset position.

S900: mounting the rotor to be tested on the support 2, and sequentially mounting a corresponding second upper semicircular arc edge 212 and a first upper semicircular arc edge 211; and carrying out a rotor test on the rotor to be realized.

The process of mounting the rotor to be tested to the support 2 is to ensure that the rotor is properly aligned on the centre line of the support 2 to ensure its rotational balance. Next, the second upper semicircular edge 212 and the first upper semicircular edge 211 are sequentially installed. The mounting of these two semicircular edges generally requires precision in place, ensuring structural integrity and balance of the rotor. After these steps are completed, the rotor is ready for testing, at which time it is tested for key performance indicators such as balance, strength, and stability during operation.

Through the scheme, the rotor test platform 1 and the support 2 are designed to be used for multiple times after one-time centering, the support 2 is flexibly adjusted, accurately and stably positioned, and the simplicity of simple, convenient and safe operation and maintenance is achieved, so that the test efficiency is remarkably improved. The repeated use after one centering avoids the complicated process that each test needs to be re-centered, and saves a great deal of time and manpower resources. The flexible adjustment of the support 2 enables the same set of equipment to be suitable for various rotors, and the universality of the equipment is improved. Accurate and stable positioning ensures the accuracy and repeatability of the test, thereby improving the effectiveness of the test.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rotor test support is characterized in that,

comprises a platform (1), a support (2) in sliding fit with the platform (1) and a positioning structure for fixing the support (2) on the platform (1);

a boss structure is arranged on the platform (1) along the length direction, and positioning surfaces (12) are symmetrically arranged on the boss structure along the middle section;

the support (2) is distributed with at least two along the length direction of the boss structure, the support (2) comprises an upper half part (21) and a lower half part (22) which are detachably connected, the upper half part (21) and the lower half part (22) are respectively provided with semicircular grooves, the semicircular grooves of the upper half part (21) and the lower half part (22) are combined to form a circular mounting hole for accommodating a rotor shaft bearing seat, the lower half part (22) is provided with a positioning groove (223), and the positioning groove (223) is matched with the positioning surface (12) for radial positioning;

the positioning structure comprises a positioning rod (700), the positioning rod (700) comprises a rod portion and a head portion with the cross section larger than that of the rod portion, a positioning groove (223) parallel to the boss structure is formed in the platform (1), the positioning groove (223) comprises a groove bottom matched with the head portion of the positioning rod (700) and a groove neck matched with the rod portion of the positioning rod (700), and the rod portion penetrates through the lower half portion (22) of the support (2) and is in threaded connection with a positioning nut.

2. The rotor test stand according to claim 1, wherein,

the upper half part (21) comprises a first upper semicircular arc edge (211) and a second upper semicircular arc edge (212) which are coaxially arranged and detachably connected, the lower half part (22) comprises a first lower semicircular arc edge and a second lower semicircular arc edge which are coaxially arranged and detachably connected, the inner diameters of the first upper semicircular arc edge (211) and the first lower semicircular arc edge are consistent, the inner diameters of the second upper semicircular arc edge (212) and the second lower semicircular arc edge are consistent, and the outer diameter of the second upper semicircular arc edge (212) is consistent with the inner diameter of the first upper semicircular arc edge (211).

3. A rotor test stand according to claim 2, wherein,

the lower half part (22) is provided with an oil return hole (221), an oil return groove (14) corresponding to the oil return hole (221) is formed in a boss structure of the platform (1), and an oil drain hole communicated with a tester oil tank is formed in the lower part of the oil return groove (14).

4. A rotor test stand according to claim 3, wherein,

the tester is characterized in that first kidney-shaped holes (15) are symmetrically formed in the platform (1), T-shaped bolts (100) are arranged in the first kidney-shaped holes (15) in a penetrating mode, the heads of the T-shaped bolts (100) are connected with T-shaped grooves (11) in the tester platform (1), and the rod portions of the T-shaped bolts (100) penetrate through the first kidney-shaped holes (15) and are connected with locking nuts (300) in a threaded mode.

5. The rotor test stand according to claim 4, wherein,

and sensor mounting holes (216) are formed in the position right above the upper half part (21) and the side end faces, and the sensor mounting holes (216) are used for mounting vibration acceleration sensors for monitoring vibration of the test support.

6. The rotor test stand according to claim 5, wherein,

corresponding pin holes are formed in the upper half part (21) and the lower half part (22), positioning pins (600) penetrate through the pin holes, and the upper half part (21) and the lower half part (22) are connected through bolts.

7. The rotor test stand of claim 6, wherein the rotor,

the second upper semicircular arc edge (212) and the second lower semicircular arc edge are provided with a plurality of groups according to the inner diameter size, and the second upper semicircular arc edge (212) and the second lower semicircular arc edge are determined according to the outer diameter size of the upper bearing of the rotor.

8. The rotor test stand of claim 7, wherein the rotor,

the two sides of the platform (1) and the lower half part (22) are in threaded connection with hanging rings (400), and the hanging rings (400) are symmetrically distributed on two sides of the boss structure.

9. A rotor testing method using the rotor test stand according to any one of claims 1 to 8, comprising the steps of:

the method comprises the steps of initially installing a platform (1) on a tester, and roughly adjusting and determining the position of the platform (1);

sliding the support (2) along the length direction of the platform (1), translating the support (2) from two ends of the platform (1) to preset positions, wherein the preset positions are determined according to the rotor fulcrum span, and fastening the support (2) on the platform (1) to enable the support (2) and the platform (1) to form a whole;

the centering instrument is used for centering the support (2), and the centering effect is achieved by adjusting the position of the platform (1);

after centering, the platform (1) is completely fixed on the tester;

the bearing of the rotor is arranged on the support (2), and one rotor test is completed.

10. The rotor testing method of claim 9, wherein:

after completing one rotor test, the method further comprises the following steps:

removing the first upper semicircular edge (211) and the second upper semicircular edge (212), and taking out the rotor after the test is completed;

the second lower semicircular arc edge is detached, and the second lower semicircular arc edge with corresponding specification is installed according to the outer diameter of the bearing of the rotor to be tested;

sliding the support (2) along the length direction of the platform (1), translating the support (2) from two ends of the platform (1) to preset positions, wherein the preset positions are determined according to the span of a rotor fulcrum to be tested, and fastening the support (2) on the platform (1) to enable the support (2) and the platform (1) to form a whole;

the rotor to be tested is mounted on the support (2), and a corresponding second upper semicircular arc edge (212) and a corresponding first upper semicircular arc edge (211) are sequentially mounted; and carrying out a rotor test on the rotor to be realized.