Low-temperature pump motor rotor coaxiality gaugeTechnical Field
The utility model relates to the technical field of cryopumps, in particular to a tool for detecting coaxiality of a motor rotor of a cryopump.
Background
At present, when the coaxiality of the motor rotor of the low-temperature pump is detected, two ends of the motor rotor of the low-temperature pump are usually placed on two V-shaped blocks, and then a dial indicator is adopted to detect a detection part on the motor rotor. The two V-shaped blocks are generally fixed on the ground or a certain plate, and the shaft diameters of the two ends of the motor rotor of the cryogenic pump are different, so that the fixed structure of the original V-shaped block is not applicable when different motor rotors are required to be detected.
Therefore, a new gauge is required to be designed, the applicability of the gauge is enhanced, and the coaxiality of the rotor of the low-temperature pump motor is conveniently detected.
Disclosure of utility model
In view of the defects existing at present, the utility model provides the low-temperature pump motor rotor coaxiality gauge which is high in applicability, simple in structure, convenient to operate, easy to assemble and disassemble and low in cost.
In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme:
The utility model provides a low temperature pump motor rotor axiality examines utensil, includes the bottom plate, be equipped with first V-arrangement piece, second V-arrangement piece, low temperature pump motor rotor, mounting bracket, percentage table on the bottom plate, first V-arrangement piece, second V-arrangement piece are located respectively at low temperature pump motor rotor both ends, the percentage table is fixed on the mounting bracket, and low temperature pump motor rotor one side is located to the percentage table, low temperature pump motor rotor axiality examines utensil still includes the actuating lever, adjusts mounting bracket board, first wedge plate, second wedge plate, the actuating lever is connected in adjusting the mounting bracket board, actuating lever one end is connected with first wedge plate, it fixes in bottom plate one side to adjust the mounting bracket board, be equipped with the L-shaped groove on the bottom plate, first wedge plate, second wedge plate cooperation are connected, both activity are located the L-shaped inslot, the second V-arrangement piece is fixed on the second wedge plate.
According to one aspect of the utility model, the mounting frame is a lifting frame and comprises a linear guide rail and a movable slide block, wherein the linear guide rail is fixed on the bottom plate, the movable slide block is connected with the linear guide rail in a matched manner, the movable slide block can vertically lift along the linear guide rail, and the dial indicator is fixed on the movable slide block.
According to one aspect of the utility model, a sliding rail is arranged in the L-shaped groove, and the first wedge-shaped plate and the second wedge-shaped plate are respectively connected with the sliding rail in a sliding way.
According to one aspect of the utility model, the cryopump motor rotor coaxiality gauge further comprises a driving device, and the driving device is connected with the driving rod.
According to one aspect of the utility model, the low-temperature pump motor rotor coaxiality gauge further comprises an axial positioning block, wherein the axial positioning block is fixed on the second V-shaped block, and one end of the low-temperature pump motor rotor is arranged on one side of the axial positioning block.
According to one aspect of the utility model, the motor rotor of the cryopump comprises a motor shaft head, a motor silicon steel body and a motor shaft tail which are sequentially connected, wherein the motor shaft head and the motor shaft tail are respectively and correspondingly arranged on the first V-shaped block and the second V-shaped block, and the dial indicator is respectively arranged on one side of the motor shaft head and one side of the motor silicon steel body.
According to one aspect of the utility model, the motor shaft head is provided with a shaft head bearing, the motor shaft tail is provided with a shaft tail bearing, the shaft head bearing and the shaft tail bearing are respectively and correspondingly arranged on the first V-shaped block and the second V-shaped block, and the shaft tail bearing is arranged on one side of the axial positioning block.
The implementation of the utility model has the advantages that: when the low-temperature pump motor rotor is used, the driving rod rotates or stretches in the adjusting support plate, the second wedge-shaped plate is driven to translate on the upper surface of the L-shaped groove, the first wedge-shaped plate moves along the wedge-shaped surface of the matched and connected part of the first wedge-shaped plate and the second wedge-shaped plate, namely the first wedge-shaped plate is lifted relative to the bottom plate, so that the height of the second V-shaped block is adjusted, two ends of the low-temperature pump motor rotor are respectively placed on the first V-shaped block and the second V-shaped block, and then the to-be-detected part on the low-temperature pump motor rotor is detected by the dial indicator; therefore, the detection tool can meet the detection requirements of different motor rotors. Through setting up the mount and erecting into crane (linear guide, movable slide), can adjust the high position of percentage table, this gauge can further strengthen the suitability. The checking fixture has the advantages of simple integral structure, convenient operation, easy disassembly and assembly and low cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic top view of the base plate according to the present utility model;
fig. 3 is a schematic structural view of the axial positioning block according to the present utility model.
The names corresponding to the serial numbers in the figures are as follows:
1. A first V-block; 2. a second V-block; 3. a low temperature pump motor rotor; 31. a motor shaft head; 32. a motor silicon steel body; 33. a motor shaft tail; 4. a mounting frame; 5. a dial indicator; 6. a bottom plate; 7. a driving rod; 8. adjusting a support plate; 9. a first wedge plate; 10. a second wedge plate; 11. an axial positioning block; 12. a shaft head bearing; 13. and a shaft tail bearing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, 2 and 3, the coaxiality gauge for the motor rotor of the cryopump comprises a bottom plate 6, a first V-shaped block 1, a second V-shaped block 2, an axial positioning block 11, a motor rotor 3 of the cryopump, a mounting frame 4, a dial indicator 5, a driving rod 7, an adjusting support plate 8, a first wedge-shaped plate 9 and a second wedge-shaped plate 10; the low-temperature pump motor rotor 3 comprises a motor shaft head 31, a motor silicon steel body 32 and a motor shaft tail 33 which are sequentially connected, a shaft head bearing 12 is sleeved on the motor shaft head 31, and a shaft tail bearing 13 is sleeved on the motor shaft tail 33. The bottom plate 6 is not limited in structural shape, and can be square plate-shaped and used for bottom support installation of other parts; the bottom plate 6 is provided with an L-shaped groove. The first V-shaped block 1 and the second V-shaped block 2 are arranged at two ends of the bottom plate 6 left and right, the first V-shaped block 1 is fixed on the bottom plate 6, and the second V-shaped block 2 is fixed on the second wedge-shaped plate 10; both V-shaped blocks may be made of a rectangular block with a V-shaped hole or V-shaped face in the center of the top. The axial positioning block 11 is fixed at the center of the top of the second V-shaped block 2, and the structural shapes of the axial positioning block and the second V-shaped block are matched with each other; the axial positioning block 11 is used for axially positioning the end part of the rotor 3 of the cryopump motor when in placement and installation. The two ends of the low-temperature pump motor rotor 3, namely the shaft head bearing 12 and the shaft tail bearing 13 are respectively and correspondingly arranged on the first V-shaped block 1 and the second V-shaped block 2, wherein the shaft tail bearing 13 is abutted against the side of the axial positioning block 11. The mounting frame 4 is a vertical bracket and is vertically fixed on the bottom plate 6; the two mounting frames 4 are respectively positioned on the side surfaces of the motor shaft head 31 and the motor silicon steel body 32. The dial indicators 5 are fixedly arranged on the mounting frame 4, and the number of the dial indicators is identical; the dial indicator 5 is respectively positioned right above the outer circumferences of the motor shaft head 31 and the motor silicon steel body 32, and is used for abutting and measuring coaxiality. The middle section of the driving rod 7 is clamped and connected in the adjusting support plate 8, namely the driving rod 7 cannot stretch and retract left and right relative to the adjusting support plate 8; the driving rod 7 is a screw or a lead screw, and one end of the driving rod is in threaded connection with the first wedge plate 9. The adjusting bracket plate 8 is not limited in structural shape, and may be square plate-shaped, and the bottom thereof is fixed on the right side of the bottom plate 6 by screws. The first wedge-shaped plate 9 and the second wedge-shaped plate 10 are connected in a matched mode, the cross sections of the first wedge-shaped plate 9 and the second wedge-shaped plate are right-angled triangles, the combination of the first wedge-shaped plate and the second wedge-shaped plate is rectangular, and the first wedge-shaped plate and the second wedge-shaped plate are connected in a contact mode at an inclined plane, a wedge-shaped plane or a diagonal line; both are movably arranged in the L-shaped groove. The driving rod 7 is driven to rotate in the adjusting support plate 8 by external force, the second wedge-shaped plate 10 is driven to translate on the upper surface of the L-shaped groove of the bottom plate 6, the first wedge-shaped plate 9 moves along the wedge-shaped surface of the matched and connected part of the first wedge-shaped plate and the second wedge-shaped plate 10, namely, the first wedge-shaped plate 9 is lifted relative to the bottom plate 6, so that the height of the second V-shaped block 2 is adjusted, bearings at two ends of the low-temperature pump motor rotor 3 are respectively placed on the first V-shaped block 1 and the second V-shaped block 2, and then the to-be-detected part on the low-temperature pump motor rotor 3 is detected by the dial indicator 5; in this way, the present inspection tool can be applied to the inspection of changing a different motor rotor, or the inspection of different outer diameters of the motor shaft tail 33 or the shaft tail bearing 13 (different distances between the lowest outer diameter position and the bottom plate 6).
In this embodiment, the mounting frame 4 may be a lifting frame, and includes a linear guide rail and a movable slider, where the linear guide rail is vertically fixed on the bottom plate 6, the movable slider is connected with the linear guide rail in a matching manner, the movable slider can vertically lift along the linear guide rail, the two structures are adapted to each other, and the dial indicator 5 is fixed on the movable slider; after the height position of the dial indicator 5 is adjusted by sliding and lifting the movable slide block on the linear guide rail, the movable slide block is fixed with the linear guide rail by adopting any structure such as a bolt and the like, so that the final height fixed installation of the dial indicator 5 is ensured. Therefore, the gauge can also adapt to motor rotors with different outer diameters of the shaft heads or the silicon steel body, and the applicability can be further enhanced.
In this embodiment, the sliding rails may be disposed in the L-shaped groove, that is, the upper surface and the side surface, and the bottom surface of the first wedge plate 9 and the side surface of the second wedge plate 10 may be slidably connected with the sliding rails; in this way, the translation of the first wedge-shaped plate 9 and the lifting of the second wedge-shaped plate 10 are facilitated, and the height adjustment of the second V-shaped block 2 is facilitated, so that the use is more convenient.
In this embodiment, the coaxiality gauge of the rotor of the cryopump motor may further include a driving device, which may be a stepper motor, connected to the driving rod 7; in this way, the driving rod 7 can be conveniently driven to rotate more conveniently in a labor-saving manner.
In this embodiment, the bottom plate 6, the first V-shaped block 1, the second V-shaped block 2, the low temperature pump motor rotor 3 (motor shaft head 31, motor silicon steel body 32, motor shaft tail 33, shaft head bearing 12, shaft tail bearing 13), and the dial indicator 5 are all of the prior art, and will not be described again.
Example two
The difference between this embodiment and the first embodiment is that: the driving rod 7 is a telescopic rod, is sleeved in the adjusting support plate 8, and one end of the driving rod is fixed with the first wedge-shaped plate 9 in any fixing mode. The driving rod 7 is driven by external force to stretch and retract relative to the adjusting support plate 8, and the second wedge-shaped plate 10 is driven to translate on the upper surface of the L-shaped groove of the bottom plate 6, so that the first wedge-shaped plate 9 moves along a wedge-shaped surface at the matched and connected position of the first wedge-shaped plate and the second wedge-shaped plate 10, namely, the first wedge-shaped plate 9 is lifted relative to the bottom plate 6, and the height of the second V-shaped block 2 is adjusted.
In this embodiment, the driving device may be an electric push rod, so that the driving rod 7 can be driven to stretch and retract more conveniently with less effort.
The implementation of the utility model has the advantages that: when the low-temperature pump motor rotor 3 is used, the driving rod 7 rotates or stretches in the adjusting support plate 8 to drive the second wedge-shaped plate 10 to translate on the upper surface of the L-shaped groove, so that the first wedge-shaped plate 9 moves along the wedge-shaped surface at the matched and connected position of the first wedge-shaped plate and the second wedge-shaped plate 10, namely, the first wedge-shaped plate 9 is lifted relative to the bottom plate 6, the height of the second V-shaped block 2 is adjusted, then two ends of the low-temperature pump motor rotor 3 are respectively placed on the first V-shaped block 1 and the second V-shaped block 2, and then the to-be-detected position on the low-temperature pump motor rotor 3 is detected by the dial indicator 5; therefore, the detection tool can meet the detection requirements of different motor rotors. Through setting up mounting bracket 4 into crane (linear guide, movable slide), can adjust the high position of percentage table 5, this utensil of examining can further strengthen the suitability. The checking fixture has the advantages of simple integral structure, convenient operation, easy disassembly and assembly and low cost.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.