CN209758927U - rotor lifting tool of motor - Google Patents

Abstract

the embodiment of the application provides a rotor of motor promotes frock includes: the device comprises a screw, a nut, a lifting device and a hydraulic device; the first end of the screw rod is in threaded connection with the nut, the second end of the screw rod penetrates through a central flange of a shaft system of the motor and extends into a rotor of the motor, and the second end of the screw rod is in threaded connection with the rotor; the lifting device comprises a shell and a piston, the shell is arranged on the outer peripheral side of the piston and is in sliding connection with the lifting end of the piston, and the connecting end of the piston is fixedly connected with a nut; the hydraulic device is connected with the lifting device through a liquid path and is used for controlling the piston to drive the screw rod to move along the axial direction of the piston. In the rotor of the motor of this application embodiment promotes frock, the connection design between screw rod and the rotor is threaded connection for the stress distribution at the position of being connected between screw rod and the rotor has increased the dispersion degree of stress on the screw thread, avoids appearing stinging the silk at the in-process that promotes the rotor in-process or fix a position the relative position relation between rotor and the shafting.

Description

Rotor lifting tool of motor

Technical Field

The application relates to the technical field of motor assembly, in particular to a rotor lifting tool of a motor.

Background

the motor comprises a plurality of components with matching relations, and the components of the motor need to be arranged at preset positions in actual use to ensure the normal operation of the motor. For example, in a motor with an outer rotor and an inner stator structure, a shafting, a rotor and a stator need to have matched positional relationship, and the motor can work normally.

the motor assembly of the existing wind generating set generally adopts the following steps:

And sleeving the rotor and the stator so that the rotor falls on the jack tool. Then, the shaft system and the rotor are sleeved, and after this step is completed, a certain distance h exists between the shaft system and the rotor along the vertical direction, for example, about 10mm (millimeter). Then, bolts are used for sequentially penetrating through the connecting holes of the shafting and the connecting holes of the rotor, and the rotor is lifted by applying a large moment to the bolts. Generally do not use the product bolt in the rotor process is carried to the reality, but uses the frock bolt, lifts the back when the rotor and changes the frock bolt for the product bolt. After the rotor is lifted, a certain distance exists between the rotor and the jack tool, namely the jack tool does not support the rotor any more, and the jack tool is taken out at the moment.

however, the inventor of the present application has found that in the conventional generator sleeving method, the operation of lifting the rotor is performed by using the tooling bolt, and after the rotor is lifted, the tooling bolt needs to be disassembled and replaced by the product bolt. The replacement of the bolt increases the number of steps and complexity of the operation, and it is difficult to avoid partial loss of the lifting effect during the replacement of the bolt.

SUMMERY OF THE UTILITY MODEL

This application provides a rotor of motor and promotes frock to prior art's shortcoming for there is the technical problem who needs to change the bolt after promoting the rotor in solution prior art.

In a first aspect, an embodiment of the present application provides a rotor lifting tool, including: the device comprises a screw, a nut, a lifting device and a hydraulic device;

the first end of the screw rod is in threaded connection with the nut, the second end of the screw rod penetrates through a central flange of a shaft system of the motor and extends into a rotor of the motor, and the second end of the screw rod is in threaded connection with the rotor;

The lifting device comprises a shell and a piston, the shell is arranged on the outer peripheral side of the piston and is in sliding connection with the lifting end of the piston, and the connecting end of the piston is fixedly connected with a nut;

The hydraulic device is connected with the lifting device through a liquid path and is used for controlling the piston to drive the screw rod to move along the axial direction of the piston.

The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:

1. This application promotes the connection between screw rod and the rotor in the frock for design threaded connection for the stress distribution of connecting the position between screw rod and the rotor has increased the dispersion degree of stress on the screw thread, avoids appearing stinging the silk at the in-process that promotes the rotor in-process or fix a position the relative position relation between rotor and the shafting.

2. the screw and the nut of this application are as the part that has multiple functions, and in the operation that promotes the rotor, screw and nut cooperation for promote the rotor to predetermineeing the position. After the rotor is lifted to the preset position, the screw and the nut do not need to be detached, the screw continues to be connected with the rotor, and the nut continues to position the relative position between the rotor and the shaft system without replacing the screw or the nut.

3. The rotor lifting tool in the embodiment of the application can comprise a plurality of lifting devices, and a screw rod, a nut and a pipeline which correspond to the lifting devices, so that the lifting devices are connected in parallel relative to the hydraulic device. A plurality of hoisting devices carry out the lifting operation through same hydraulic means's pressure build-up, and a plurality of hoisting devices and the screw rod that corresponds with it, the nut is for the even distribution of central ring flange, can guarantee that a plurality of hoisting devices carry out the lifting operation to the rotor in a plurality of positions synchronization and uniformly, make the rotor in the promotion in-process great degree with central ring flange keep relative parallel, the rotor of avoiding containing the permanent magnet leads to the fact the attraction to the stator, improve the stability and the stationarity of rotor in the promotion in-process, be favorable to promoting the assembly precision and the quality of motor.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the relative position relationship between a rotor and a shaft system of a motor;

Fig. 2 is a schematic partial enlarged structural view corresponding to the area a shown in fig. 1 before a lifting operation is performed by the rotor lifting tool of the motor provided in the embodiment of the present application;

Fig. 3 is a schematic view of a partially enlarged structure corresponding to the area a shown in fig. 1 after assembling a screw of a rotor lifting tool with a shaft system and a rotor before lifting operation is performed by the rotor lifting tool of the motor according to the embodiment of the present application;

Fig. 4 is a schematic view of a partial structure and a nut of a rotor lifting tool of a motor according to an embodiment of the present disclosure;

fig. 5 is a schematic partial enlarged structural view of a rotor lifting tool of a motor according to an embodiment of the present application, corresponding to an area a shown in fig. 1, in an assembly relationship between the shaft system and the rotor before a lifting operation is performed;

Fig. 6 is a schematic structural view of a screw of a rotor lifting tool of a motor according to an embodiment of the present application;

Fig. 7 is a schematic distribution diagram of a partial structure of a rotor lifting tool of a motor on a central flange of a shaft system according to an embodiment of the present application.

Wherein the reference numerals are as follows:

1-screw, 11-first end of screw 1, 12-second end of screw 1;

2-a nut;

3-a lifting device;

311-the first housing unit of lifting device 3, 312-the second housing unit of lifting device 3, 313-the third housing unit of lifting device 3;

32-piston, 321-lift end of piston 32, 3211-spring abutment of lift end 321, 322-connection end of piston 32;

3311 a-first section of branch, 3311 b-second section of branch, 3312-general branch of first hydraulic chamber, 3321-annular projection of lifting end 321, 3322-annular step of housing, 3323-first seal ring, 3324-second seal ring;

34-gearbox, 341-knob of gearbox 34, 342-transmission of gearbox 34;

35-a spring;

5-axis, 51-central flange of axis 5;

6-rotor.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

it will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a rotor of motor promotes frock, as shown in fig. 3 to 6, includes: a screw 1, a nut 2, a lifting device 3 and a hydraulic device.

As shown in fig. 1 and 3, the first end 11 of the screw 1 is in threaded connection with the nut 2, the second end 12 of the screw 1 penetrates through the central flange 51 of the shaft 5 of the motor and protrudes into the rotor 6 of the motor, and the second end 12 of the screw 1 is in threaded connection with the rotor 6.

as shown in fig. 4 and 5, the lifting device 3 includes a housing and a piston 32, the housing is disposed on the outer periphery of the piston 32 and slidably connected to a lifting end 321 of the piston 32, and a connecting end 322 of the piston 32 is fixedly connected to the nut 2.

The hydraulic device is connected with the lifting device 3 through a liquid path and is used for controlling the piston 32 to drive the screw rod 1 to axially displace along the piston 32.

In the embodiment of the present application, after the shaft system 5 is sleeved on the rotor 6, as shown in fig. 1, 2 and 4, a certain distance h is often provided between the shaft system 5 and the rotor 6, and h is about 10mm (millimeter). Before the motor is completely assembled, the distance h should be adjusted to a preset value, and the adjustment process needs to lift the rotor 6 towards the shafting 5. The utility model provides a rotor of motor promotes frock, promotes screw rod 1 and nut 2 in the frock with the rotor as the part that has multiple functions, in the operation that promotes rotor 6, screw rod 1 and nut 2 cooperation for promote rotor 6 to preset the position. After the rotor 6 is lifted to the preset position, the screw rod 1 and the nut 2 do not need to be detached, the screw rod 1 continues to be connected with the rotor 6, and the nut 2 continues to position the relative position between the rotor 6 and the shaft system 5 without replacing the screw rod 1 or the nut 2.

the connection between the screw rod 1 and the rotor 6 is threaded connection (not shown in the figure), so that the stress at the connection part between the screw rod 1 and the rotor 6 is distributed on the threads, the dispersion degree of the stress is increased, and the phenomenon of thread biting of the threads is avoided in the process of lifting the rotor 6 or in the process of positioning the relative position relation between the rotor 6 and the shafting 5.

in an embodiment of the present application, as shown in fig. 1, 3 to 6: the first end 11 of the screw rod 1 is positioned on the outer side of a central flange 51 of a shafting 5 of the motor, which is far away from a rotor of the motor, and is in threaded connection with the nut 2.

The first end 11 and the second end 12 of the screw 1 may be integrally provided. There may be no distinct demarcation between the first end 11 and the second end 12. The first end 11 and the second end 12 may be divided according to the correspondence of the screw 1 with respect to the other components. For example, the second end 12 is a portion that is screwed to the rotor 6, and the first end 11 is a portion that is screwed to the nut 2. Alternatively, the first end 11 and the second end 12 may have the position of the screw 1 with respect to the shaft line 5 as a boundary. For example, the screw 1 has a first end 11 on the side of the shaft system 5 facing away from the rotor 6 and the screw 1 has a second end 12 on the side of the shaft system 5 adjacent to the rotor 6.

the lift end 321 and the connecting end 322 of the piston 32 may be integrally provided. There may be no distinct demarcation between the lift end 321 and the connecting end 322. The lift end 321 and the connecting end 322 may be divided according to the functions to be performed by the corresponding portions of the piston 32. For example, the portion that is in sliding connection with the housing is a lift end 321, the lift end 321 contacting the housing at least during a lifting operation. The portion that remains in fixed connection with the nut 2 during the lifting operation is the connection end 322, and the connection end 322 may not be in direct contact with the housing. Alternatively, the lift ends 321 and the link ends 322 may have different structures and sizes. The lifting end 321 and the connecting end 322 of the piston 32 can also be provided in separate bodies, and the lifting end 321 and the connecting end 322 can be detachably connected.

In an embodiment of the present application, the screw 1 is a double-threaded screw, and the outer peripheries of the first end 11 and the second end 12 are both provided with threads. The threads provided on the first end 11 may have different basic parameters than the threads provided on the second end 12. The basic parameters include: one or more of the parameters of the rotation direction of the thread, the lead angle of the thread, the thread profile inclination angle, the thread pitch and the like. The borderline between the first end 11 and the second end 12 may be a location where one or more of the aforementioned basic parameters of the screw 1 are changed.

In one embodiment of the present application, as shown in fig. 1 and 6, the screw 1 is a reducing screw, and the first end 11 and the second end 12 have different radial dimensions. The radial dimension of the first end 11 may be greater than, or less than, the radial dimension of the second end 12. The first end 11 may be obtained by integral molding with the second end 12. The boundary between the first end 11 and the second end 12 may be the location where the radial dimension of the screw 1 changes.

To screw rod 1's design in this application embodiment for the applicable environment of rotor promotion frock introduced in this application is more extensive. For the rotor 6 and the shafting 5 with different specifications and sizes, the lifting operation can be implemented by selecting the screw 1 and using the same lifting device 3 and a hydraulic device.

As shown in fig. 1, 3, 6 and 7, the shaft system 5 is provided with a hole for allowing the screw 1 to pass through. The radial dimension of the hole may be such as to allow only the second end 12 of the screw 1 to pass through; alternatively, the radial dimension of the hole may be such as to allow the screw 1 to pass through in its entirety. In some embodiments, the shaft 5 is provided with a central flange 51 extending radially from the shaft on a side away from the rotor 6, and the hole is correspondingly formed in the central flange 51.

As shown in fig. 1, 3 and 6, the rotor 6 is provided with a hole engaged with the second end 12, and a screw (not shown) engaged with the second end 12 is provided on an inner circumferential side of the hole. Alternatively, the rotor 6 is provided with a groove engaged with the second end 12, and the inner peripheral side of the groove is provided with a screw thread engaged with the second end 12. The second end 12 and the bore or the slot may be at least partially threaded. The hole or the groove corresponds to the hole in the central flange 51 of the shaft 5 in axial position, for example: concentric; for another example: the projection of the hole or the groove in the plane of the central flange 51 of the shaft 5 falls within the area of the hole in the central flange 51 of the shaft 5.

As shown in fig. 1, 3-5, the housing of the lifting device 3 constitutes at least part of the outline of the exterior of the lifting device 3. During the lifting operation, one end of the casing close to the shaft system 5 abuts against one side of the shaft system 5 far away from the rotor 6, and the piston 32 is supported by the lifting end 321 of the piston 32 during the lifting operation. The housing is enclosed to form a structure with a certain cavity, the piston 32 is arranged in the cavity, and the piston 32 can slide for a certain distance along the axial direction of the cavity. The lift end 321 and the connection end 322 of the piston 32 may be oppositely disposed, and when the piston 32 has a cylindrical shape, the lift end 321 and the connection end 322 may have two cylindrical ends. The connection between the connection end 322 and the nut 2 may be a snap connection, or the connection end 322 holds the nut 2 at least on the outer circumferential side of the nut 2 so that the nut 2 can slide together with the piston 32 in the axial direction of the piston 32. Alternatively, the radial dimension of the connecting end 322 is adjustable, so that the lifting operation can be performed by the same lifting device 3 for screws 1 and nuts 2 with different specifications and dimensions.

Alternatively, the hydraulic device may transmit the pressure to the lifting device 3 by means of a fluid such as oil. The hydraulic device is detachably connected with the lifting device 3 through a liquid path.

In an embodiment of the present application, as shown in fig. 4 and 5, the lifting device 3 further includes: a first hydraulic chamber and a second hydraulic chamber.

The first hydraulic chamber is buried in the housing, and the second hydraulic chamber, which is adjustable in size in the axial direction of the piston 32, is located in the gap between the housing and the lift end 321.

The hydraulic device and the second hydraulic chamber are respectively connected to the first hydraulic chamber through a fluid path, and the first hydraulic chamber and the second hydraulic chamber are used for adjusting the relative position between the piston 32 and the housing in the axial direction of the piston 32.

The first hydraulic cavity is enclosed by the shell and is in a pipeline shape and used for communicating a liquid path between the hydraulic device and the second hydraulic device. The first hydraulic chamber is provided with a first opening at a position facing the outside of the housing, the first opening being detachably connected to the hydraulic device so that fluid inside the hydraulic device can enter or exit the first hydraulic chamber. The first hydraulic pressure chamber is provided with the second opening towards the inboard position of casing, and the second opening communicates with the second hydraulic pressure chamber for fluid in the first hydraulic pressure chamber can get into or flow out the second hydraulic pressure chamber. The second hydraulic pressure chamber is provided with the opening, and the second hydraulic pressure chamber passes through opening and first hydraulic pressure chamber intercommunication, and the fluid accessible in the second hydraulic pressure chamber gets into or flows out the second hydraulic pressure chamber.

Alternatively, in one lifting device 3, the number of the second openings is plural, the number of the through openings is the same as the number of the second openings, and the second openings and the through openings are provided in one-to-one correspondence. Alternatively, in one lifting device 3, the number of the first openings is plural, and the hydraulic device is in fluid communication with the first hydraulic chamber through the plural first openings.

Alternatively, the first hydraulic chamber may be provided on one side of the housing, for example, the first hydraulic chamber may be provided adjacent an outer peripheral side of the central flange 51 to facilitate engagement of the hydraulic device therewith.

Optionally, the second hydraulic chamber is annular such that the piston 32 is located on the central axis of the annulus. The hydraulic pressure in the second hydraulic chamber is increased to provide the piston 32 with a tensile force in a direction away from the center flange 51, and the second hydraulic chamber can lift the piston 32 uniformly in the circumferential direction of the piston 32.

the axial size of the second hydraulic chamber is adjustable, and when the hydraulic pressure in the second hydraulic chamber increases, the axial size of the second hydraulic chamber increases, and the piston 32 is lifted. The piston 32 and the nut 2 are fixed in relative positions in the axial direction of the piston 32, and the movement of the piston 32 drives the nut 2, thereby lifting the nut 2. Nut 2 and screw rod 1 threaded connection, screw rod 1 and rotor 6 threaded connection realize the promotion to rotor 6 at the in-process that nut 2 promoted.

after the rotor 6 is lifted for a certain distance, the position of the rotor 6 does not reach the preset position at this time, pressure maintaining can be performed on the hydraulic device, and then the pressure maintaining is performed on fluid in the first hydraulic cavity and the second hydraulic cavity, so that the piston 32 is suspended on the inner side of the shell in the axial direction, the relative positions of the nut 2 and the screw rod 1 are adjusted, and the nut 2 is communicated with the piston 32 to move towards the position where the rotor 6 is located. This process can maintain the lifting effect of the previous lifting operation on the rotor 6 and allow the piston 32 to recover the initial position to some extent. After that, the next stage of the lifting operation is performed. In the embodiment of the application, the lifting operation for the rotor 6 is performed in two stages, the rotor 6 is lifted by a certain distance at each time, the uniformity of the lifting operation can be improved, the convenience of a user can control the lifting operation, the requirement on the axial size of the piston 32 of the lifting device 3 is small, and the size of the lifting device 3 can be reduced. In the practical use pair, the single rotor 6 lifting operation can be divided into two lifting operations with superposable effects as described above, and can also be divided into three lifting operations with superposable effects or more.

In an embodiment of the present application, the number of the second hydraulic chambers is at least two, at least two of the second hydraulic chambers are arranged along the axial direction of the piston 32, and the at least two second hydraulic chambers are respectively connected to the first hydraulic chamber through a fluid path.

Alternatively, the number of the second hydraulic chambers may be two as shown in fig. 4, or may be three or more. The size, shape of each second hydraulic chamber may be the same or different. In the two second hydraulic pressure chambers shown in fig. 4, both the two second hydraulic pressure chambers are annular, and the central axes of the two annular second hydraulic pressure chambers coincide.

In an embodiment of the present application, as shown in fig. 4 and 5, at least one annular protrusion 3321 protruding toward the housing is disposed in the axial direction of the lifting end 321, the housing is provided with an annular step 3322 protruding toward the piston 32, the annular protrusion 3321 and the annular step 3322 are disposed in a one-to-one correspondence, projections of the annular protrusion 3321 and the annular step 3322 in a plane perpendicular to the axial direction of the piston 32 are overlapped, and a space between the annular protrusion 3321 and the annular step 3322 is a second hydraulic chamber.

the annular step 3322 is located between the corresponding annular projection 3321 and the piston 32 adjacent to one end of the nut 2. When the lifting device 3 is at the initial position, the size of the second hydraulic chamber in the axial direction of the piston 32 is minimized, and the fluid contained in the second hydraulic chamber is minimized. At this time, end surfaces of the annular step 3322 and the annular projection 3321 facing each other are minimized, for example, the end surfaces of the annular step 3322 and the annular projection 3321 facing each other abut. The movement of the piston 32 towards the central flange 51 is maximized. Alternatively, the end faces of the annular step 3322 and the annular projection 3321 facing each other may extend in a direction parallel to the plane of the central flange 51. Alternatively, the end faces of the annular step 3322 and the annular projection 3321 that face each other may be at an angle greater than 0 degrees and less than 90 degrees to the plane of the central flange 51.

The cooperation between the annular step 3322 and the annular projection 3321 in the embodiment of the present application enables to obtain the second hydraulic chamber in an annular shape. When the second hydraulic chamber has other shapes, the annular step 3322 and the annular protrusion 3321 may be designed adaptively, which falls within the scope of the embodiments of the present application.

As shown in fig. 4, when the number of the second hydraulic chambers is plural, the first hydraulic chamber may include a plurality of branches corresponding to the number of the second hydraulic chambers, a second opening of each branch is connected to the port fluid passage of each second hydraulic chamber, the plurality of branches are collected into a total branch 3312 at a position adjacent to the outer circumferential side of the housing, and a first opening is provided at a distal end of the total branch 3312, the first opening being connected to the hydraulic device fluid passage. Optionally, the plurality of branches are equal or symmetrical in shape, at least one of the radial dimension and the axial dimension of the plurality of branches is equal, and the extending directions of different branches may be different. So that the flow paths of the fluids in the first hydraulic chambers are kept the same or symmetrical as much as possible, and further the pressures in the second hydraulic chambers are the same, and the piston 32 can be pulled up uniformly at different positions in the axial direction at the lift end 321.

Each branch may include a first segment 3311a and a second segment 3311b connected by a fluid path. Optionally, the first and second segments 3311a, 3311b are both tube-like. The first section 3311a has two ends connected to the main branch 3312 and the second section 3311b, respectively, and the second section 3311b has two ends connected to the first section 3311a and the second hydraulic chamber, respectively. The axial direction of the first section 3311a is perpendicular to the axial direction of the main branch 3312, so that the fluid within the main branch 3312 can smoothly flow into the first section 3311 a.

Optionally, the axial direction of the second section 3311b is at an angle to the axial direction of the first section 3311a such that the axial direction of the second section 3311b is inclined in the lifting direction. And the distance between the connection position of the second section 3311b and the second hydraulic chamber and any one end face of the connection end 322 is larger than the distance between the connection position of the second section 3311b and the first section 3311a and the end face of the connection end 322.

In an embodiment of the present application, as shown in fig. 4, the annular protrusion 3321 is circumferentially provided with a first seal 3323, the annular step 3322 is circumferentially provided with a second seal 3324, and the first seal 3323 and the second seal 3324 are used to define the boundaries of the second hydraulic chamber at both ends in the axial direction of the piston 32.

as shown in fig. 4, the edge positions of the end faces of the annular projection 3321 and the annular step 3322 that face each other are provided with a first seal ring 3323 and a second seal ring 3324, respectively. In the present embodiment, the first seal 3323 is disposed at the maximum radial dimension of the lifting end 321 of the piston 32. The second seal ring 3324 is provided at a position where the radial dimension of the housing slidably connected to the piston 32 is minimum. The first seal 3323 defines a boundary of the second hydraulic chamber at a position away from the connection end 322, and the second seal 3324 defines a boundary of the second hydraulic chamber at a position adjacent to the connection end 322. The first seal 3323 and the second seal 3324 ensure that the fluid in the second hydraulic chamber can only enter and exit through the port of the second hydraulic chamber during the sliding of the piston 32 relative to the housing.

In an embodiment of the present application, as shown in fig. 3 and 4, the lifting device 3 further includes: a gear box 34.

the gear box 34 includes a knob 341 and a transmission member 342, at least a portion of the knob 341 is disposed outside the housing, the knob 341 and the nut 2 are respectively connected to the transmission member 342 in a toggle manner, and the transmission member 342 is configured to transmit a rotation angle of the knob 341 to the nut 2 in a preset ratio, so that the nut 2 is rotated and a relative position between the nut 2 and the screw 1 in an axial direction of the screw 1 is adjusted.

the gear box 34 may be a mechanism having a ratchet structure, and the rotation of the knob 341 and the like can be transmitted to the nut 2 by the driving member 342. A portion of the gear case 34 may be disposed at one side of the housing such that at least a portion of the knob 341 is exposed to the operating range of the user. The user can control the relative position of the nut 2 and the screw 1 by controlling the rotation direction, the rotation degree, and the like of the knob 341. The adjustment of the knob 341 by the user may be a direct adjustment or an adjustment by another auxiliary tool or a control member.

The rotation angle of the knob 341 may be transmitted to the nut 2 by increasing a predetermined multiple through the transmission member 342, or the rotation angle of the knob 341 may be transmitted to the nut 2 by decreasing a predetermined multiple through the transmission member 342, or the rotation angle of the knob 341 may be transmitted to the nut 2 by an equal ratio through the transmission member 342. Alternatively, the aforementioned ratios may be set and adjusted by a user. Alternatively, the operation for the gearbox 34 may occur after the lifting operation, or a stage of the lifting operation, is completed. It is understood that in some embodiments of the present application, the knob 341 may be replaced by a toggle lever, an adjustment handle, etc., while remaining within the scope of the embodiments of the present application.

In one embodiment of the present application, the lifting device 3 further comprises a spring 35.

The position of the lifting end 321 far away from the connecting end 322 is provided with a spring abutting portion 3211, and two ends of the spring 35 are respectively abutted with the spring abutting portion 3211 and one end of the housing far away from the connecting end 322.

The spring 35 in the present embodiment is used at least to urge the piston 32 to return to its original position relative to the housing after the stretching operation. The spring abutment 3211 and the housing away from the connection end 322 have a cavity-like structure in which the spring 35 is disposed. During the lifting operation, the piston 32 moves toward the side away from the central flange 51, compressing the spring 35. After the lifting operation is completed, the piston 32 needs to be reset, and at this time, the elastic stress stored in the spring 35 is released to push the spring abutting portion 3211 to move toward the connecting end 322, so as to compress the second hydraulic chamber and discharge the fluid in the second hydraulic chamber.

In one embodiment of the present application, as shown in fig. 3 to 5, the housing includes a plurality of housing units that are axially arranged along the piston 32. At least two of the adjacent housing units are connected in a clamping manner. For example, the position of the housing with respect to the spring 35 is the first housing unit 311; the position of the casing relative to the second hydraulic chamber is the second casing unit 312, or the position of the casing relative to the lifting end 321 is the second casing unit 312; the position of the housing relative to the connection end 322 is the third housing unit 313.

At least part of the first housing unit 311 encloses a cavity-like structure for accommodating the spring 35. The first housing unit 311 is at least partially closed at an end away from the second housing unit 312, or a convex structure extends to the inner side of the first housing unit 311, so that the end of the spring 35 away from the second housing unit 312 can abut against a corresponding position of the first housing unit 311.

one end of the first housing unit 311 close to the second housing unit 312 is provided with a card slot, and correspondingly, one end of the second housing unit 312 close to the first housing unit 311 is provided with a card tongue, and the card tongue can be inserted into the card slot corresponding to the card tongue, so as to realize the assembly between the first housing unit 311 and the second housing unit 312. The mating relationship between the latch and the card slot may be as shown in region B of fig. 4. Alternatively, a latch may be disposed on the first housing unit 311, and a card slot cooperating with the latch may be disposed on the second housing unit 312. Alternatively, the latch and the catch may each be annular, arranged circumferentially along the housing, such that the axes of the latch and catch coincide with the axis of the piston 32.

at least a portion of the second housing unit 312 defines an end face of the second hydraulic chamber, which may be angled with respect to the circumferential direction of the piston 32. At least part of the first hydraulic chamber is provided in the second housing unit 312. At least one branch of the first hydraulic chamber is provided in the second housing unit 312.

When the number of the second hydraulic chambers is plural, the number of the second housing unit 312 may be a corresponding plural number. The connection fitting relationship between the plurality of second housing units 312 may be the same as the connection fitting relationship between the first housing unit 311 and the second housing unit 312 described above.

One end of the second housing unit 312 adjacent to the third housing unit 313 is provided with a main coupling hole allowing the coupling member to pass therethrough. One end of the third housing unit 313 adjacent to the second housing unit 312 is provided with a sub coupling hole to be fitted with the main coupling hole. The inner circumferential dimension of the position of the second case unit 312 corresponding to the main attachment hole is equal to or greater than the outer circumferential dimension of the position of the third case unit 313 corresponding to the sub attachment hole, so that the position of the third case unit 313 corresponding to the sub attachment hole can be fitted into the inner side of the position of the second case unit 312 corresponding to the main attachment hole, and the main attachment hole and the sub attachment hole are coaxially disposed. After the relative position between the second housing unit 312 and the third housing unit 313 is determined, the main attachment hole and the sub attachment hole are positionally attached by the attachment member, thereby positionally attaching the second housing unit 312 and the third housing unit 313. The mating relationship between the primary connection hole, the secondary connection hole, and the connection member may be as shown in region C in fig. 4.

Alternatively, at least a portion of second housing unit 312 may be nested within third housing unit 313 while a connection is established between second housing unit 312 and third housing unit 313.

Alternatively, the number of the main connection holes and the sub connection holes respectively provided on the second case unit 312 and the third case unit 313 may be correspondingly plural sets, and the plural sets of the main connection holes and the sub connection holes may be uniformly provided in the circumferential direction of the case or asymmetrically distributed.

through the design of the shell structure in the embodiment of the application, the matching capacity between the shell and the piston 32 can be improved, and the piston 32 is suitable for pistons 32 with more complex structures and nonuniform radial sizes. A second hydraulic chamber arranged in a ring shape is also easily obtained.

in an embodiment of the present application, as shown in fig. 5 to 7, the screw 1, the nut 2 and the lifting device 3 are at least one set correspondingly, the hydraulic device includes at least one pipeline, the pipeline and the lifting device 3 are correspondingly arranged one to one, and the pipeline is connected to the first hydraulic chamber through a fluid path.

Alternatively, one end of each pipe is connected to the lifting device 3 corresponding thereto in a one-to-one correspondence manner, and the other end of each pipe is connected to the hydraulic device in a one-to-one correspondence manner, so that the groups are arranged in parallel with respect to the hydraulic device, and the fluid in the hydraulic device can flow into the lifting devices 3 respectively. The fluid in each lifting device 3 can also flow into the hydraulic device separately.

In an embodiment of the present application, as shown in fig. 1, 5 to 7, the number of the screws 1 is multiple, and the multiple screws 1 are uniformly distributed along the circumferential direction in the edge region of the central flange 51 of the shaft system 5 of the motor.

The rotor lifting tool in the embodiment of the present application may include a plurality of lifting devices 3, and a screw 1, a nut 2, and a pipe corresponding to the lifting devices 3, so that the plurality of lifting devices 3 are connected in parallel with respect to the hydraulic device. The plurality of lifting devices 3 are lifted by the pressure build-up of the same hydraulic device, and the synchronous and uniform lifting operation of the plurality of lifting devices 3 can be ensured, so that the rotor 6 is kept in relative parallel with the central flange 51 to a greater extent in the lifting process, and the attraction to the stator is avoided. Moreover, the plurality of lifting devices 3, and the corresponding screw rods 1 and nuts 2 are uniformly distributed relative to the central flange 51, so that the lifting operation of the rotor 6 is simultaneously implemented at a plurality of positions, and the stability and the stationarity of the lifting operation of the rotor 6 are improved. The position of the screw 1 can be a region D as shown in fig. 7, the position of the edge of the screw 1 relative to the circumference of the central flange 51 can be set, and the screw 1, the nut 2, the pipe and the lifting device 3 can be correspondingly set to three groups, four groups or other groups.

Alternatively, the edge region of the central flange 51 is provided with a plurality of holes along the circumferential direction, and the screw 1, the nut 2, and the lifting device 3 may be disposed in some of the holes according to the actual requirements of the user, so that the number of the holes is greater than the number of the screws 1.

In an embodiment of the present application, the corresponding dimensions of the conduits of the hydraulic device are the same. The axial and radial dimensions of the ducts corresponding to the different lifting devices 3 are equal, ensuring that the fluid in the hydraulic device is able to generate an equal pressure in each lifting device 3.

in an embodiment of the present application, the hydraulic apparatus further includes a pump station and a distributor, the distributor is respectively connected to the pump station and the pipes through a fluid path, and the distributor is configured to uniformly distribute the fluid in the pump station to each of the pipes. The pump station is used for providing pressure with controllable magnitude to the fluid in the hydraulic device, and the pressurized fluid flows into each pipeline under the control of the distributor. The number of pipes connected to the distributor fluid path is adjustable.

based on the rotor lifting tool of each motor in the foregoing embodiments, the present application embodiment further provides a method for implementing a lifting operation of the rotor 6 by using the rotor lifting tool, and the method includes the following steps:

The method comprises the following steps: sleeving a shaft system 5 of the motor, and determining the radial relative position of the shaft system 5 and a rotor 6 of the motor in the rotor 6.

This step can be implemented by a hoisting tool, and a distance h of about 10mm can be maintained between the end surface of the shafting 5 adjacent to the rotor 6 after the sheathing operation and the end surface of the rotor 6 adjacent to the shafting 5, as shown in fig. 2, and the distance h can be adjusted to be smaller by the following steps.

Step two: a plurality of screws 1 and nuts 2 matched with the screws 1 are uniformly distributed in the holes corresponding to the central flange 51 and the rotor 6 of the shaft system 5 along the circumferential direction of the shaft system 5.

In this step, the screws 1 and the nuts 2 engaged therewith may be three or four. The nut 2 is arranged on the screw 1 on the side of the central flange 51 remote from the rotor 6.

Step three: the lifting device 3 in the embodiment of the present application is installed on the side of the central flange 51 far away from the rotor 6, and the connecting end 322 of the piston 32 is fixedly connected with the nut 2, and one end of the housing abuts against the end surface of the side of the central flange 51 far away from the rotor 6 of the shafting 5.

Before or after this step, a hydraulic connection may be established between the hydraulic means and the lifting means 3, and the sequence of the connecting operations may be determined according to the actual requirements.

Step four: the pressure is built up by the hydraulic device, so that the fluid in the hydraulic device flows into the lifting device 3 uniformly, and the piston 32 drives the nut 2 to move towards the side far away from the rotor 6. The nut 2 is tightened through the gear box 34.

In the lifting operation of the rotor 6, the step four may be separately performed for a plurality of times, and the cumulative lifting distance after the lifting distances of the lifting operations are superposed is the target lifting distance.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

1. This application promotes the connection design between screw rod and the rotor in the frock for threaded connection for the stress distribution at the position of being connected between screw rod and the rotor has increased the dispersion degree of stress on the screw thread, avoids appearing stinging the silk at the in-process that promotes the rotor in-process or fix a position the relative position relation between rotor and the shafting.

2. The screw and the nut of this application are as the part that has multiple functions, and in the operation that promotes the rotor, screw and nut cooperation for promote the rotor to predetermineeing the position. After the rotor is lifted to the preset position, the screw and the nut do not need to be detached, the screw continues to be connected with the rotor, and the nut continues to position the relative position between the rotor and the shaft system without replacing the screw or the nut.

3. The rotor lifting tool in the embodiment of the application can comprise a plurality of lifting devices, and a screw rod, a nut and a pipeline which correspond to the lifting devices, so that the lifting devices are connected in parallel relative to the hydraulic device. A plurality of hoisting devices carry out the lifting operation through same hydraulic means's pressure build-up, and a plurality of hoisting devices and the screw rod that corresponds with it, the nut is for the even distribution of central ring flange, can guarantee that a plurality of hoisting devices carry out the lifting operation to the rotor in a plurality of positions synchronization and uniformly, make the rotor in the promotion in-process great degree with central ring flange keep relative parallel, the rotor of avoiding containing the permanent magnet leads to the fact the attraction to the stator, improve the stability and the stationarity of rotor in the promotion in-process, be favorable to promoting the assembly precision and the quality of motor.

those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. The utility model provides a rotor of motor promotes frock which characterized in that includes: the device comprises a screw (1), a nut (2), a lifting device (3) and a hydraulic device;

The first end (11) of the screw (1) is in threaded connection with the nut (2), the second end (12) of the screw (1) penetrates through a central flange (51) of a shaft system (5) of the motor and extends into a rotor (6) of the motor, and the second end (12) of the screw (1) is in threaded connection with the rotor (6);

The lifting device comprises a shell and a piston (32), the shell is arranged on the outer periphery of the piston (32) and is in sliding connection with a lifting end (321) of the piston, and a connecting end (322) of the piston is fixedly connected with the nut (2);

the hydraulic device is connected with the lifting device (3) through a liquid path and is used for controlling the piston (32) to drive the screw rod (1) to axially displace along the piston (32).

2. the rotor lifting tool of the motor as claimed in claim 1, wherein the first end (11) of the screw (1) is located on the outer side of a central flange (51) of a shafting (5) of the motor, which is far away from the rotor (6) of the motor, and is in threaded connection with the nut (2).

3. The rotor of claim 1 promotes frock, characterized in that, hoisting device (3) still includes: a first hydraulic chamber and a second hydraulic chamber;

The first hydraulic chamber is embedded in the housing, the second hydraulic chamber is located in a gap between the housing and the lifting end (321), and the size of the second hydraulic chamber in the axial direction of the piston (32) is adjustable;

The hydraulic device and the second hydraulic chamber are respectively connected with the first hydraulic chamber through a hydraulic path, and the first hydraulic chamber and the second hydraulic chamber are used for adjusting the relative position between the piston (32) and the housing in the axial direction of the piston (32).

4. The rotor of claim 3 promotes frock, characterized by further includes at least one of the following:

The number of the second hydraulic cavities is at least two, the at least two second hydraulic cavities are arranged along the axial direction of the piston (32), and the at least two second hydraulic cavities are respectively connected with the first hydraulic cavity through a liquid path;

The axial direction of the lifting end (321) is provided with at least one annular protrusion (3321) protruding towards the shell, the shell is provided with an annular step (3322) protruding towards the piston (32), the annular protrusion (3321) and the annular step (3322) are arranged in a one-to-one correspondence manner, projections of the annular protrusion (3321) and the annular step (3322) in a plane perpendicular to the axial direction of the piston (32) are overlapped, and a space between the annular protrusion (3321) and the annular step (3322) is the second hydraulic cavity;

Annular protrusion (3321) is provided with first sealing washer (3323) along circumference, annular step (3322) is provided with second sealing washer (3324) along circumference, first sealing washer (3323) with second sealing washer (3324) are used for injecing the second hydraulic pressure chamber is followed the border at piston (32) axial both ends.

5. The rotor of claim 1 promotes frock, characterized in that, hoisting device still includes: a gear box (34);

The gear box (34) comprises a knob (341) and a transmission piece (342), at least part of the knob (341) is arranged outside the shell, the knob (341) and the nut (2) are respectively in dial connection with the transmission piece (342), and the transmission piece (342) is used for transmitting the rotation angle of the knob (341) to the nut (2) according to a preset proportion, so that the nut (2) rotates and adjusts the relative position between the nut (2) and the screw rod (1) in the axial direction of the screw rod (1).

6. The rotor lifting tooling of an electric machine according to claim 1, characterized in that the lifting device (3) further comprises a spring (35);

The position of the lifting end (321) far away from the connecting end (322) is provided with a spring abutting part (3211), and two ends of the spring (35) are respectively abutted against the spring abutting part (3211) and one end of the shell far away from the connecting end (322).

7. the rotor of the motor promotes frock of claim 3, characterized in that, screw rod (1), nut (2) and hoisting device (3) are at least one set of corresponding, and hydraulic means includes at least one pipeline, the pipeline with hoisting device (3) one-to-one setting, the pipeline passes through the liquid circuit with first hydraulic chamber and is connected.

8. The rotor of the motor promotes frock of claim 7, characterized in that, the quantity of screw rod (1) is a plurality of, a plurality of screw rod (1) along the even distribution of circumference in the marginal area of the central ring flange (51) of the shafting (5) of motor.

9. the rotor of claim 7 promotes frock, characterized by further includes at least one of the following:

The corresponding sizes of all the pipelines of the hydraulic device are the same;

the hydraulic device further comprises a pump station and a distributor, the distributor is respectively connected with the pump station and the pipelines through liquid paths, and the distributor is used for uniformly distributing the fluid in the pump station to the pipelines.

10. The rotor of claim 1 to 9 promotes frock, characterized by, further includes at least one of the following:

the hydraulic device is detachably connected with the lifting device (3) through a liquid path;

The screw (1) is a double-head screw, and the outer peripheral sides of the first end (11) and the second end (12) are both provided with threads; or the screw (1) is a variable diameter screw, and the radial sizes of the first end (11) and the second end (12) are different.