CN112910193A

CN112910193A - Integral press-fitting mechanism and stacking system of asynchronous motor

Info

Publication number: CN112910193A
Application number: CN202110220299.1A
Authority: CN
Inventors: 吴迎迎; 杨少林; 龚涛
Original assignee: Jieyun Intelligent Equipment Suzhou Co ltd
Current assignee: Jieyun Intelligent Equipment Suzhou Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-04

Abstract

The invention discloses an integral press-mounting mechanism and a stacking system of an asynchronous motor, which comprise an integral press-mounting mechanism of the asynchronous motor, a liquid nitrogen cooling mechanism and/or a heating mechanism, wherein the liquid nitrogen cooling mechanism is used for cooling a rotor shaft, the heating mechanism is used for heating a rotor core and a dynamic balance plate, and the integral press-mounting mechanism of the asynchronous motor is used for assembling the rotor core, an upper dynamic balance plate, a lower dynamic balance plate and the rotor shaft into a whole. The diameter of the rotor shaft is reduced through the liquid nitrogen cooling mechanism, the heating mechanism respectively heats the upper dynamic balance plate, the lower dynamic balance plate and the cast aluminum rotor iron core, the principle of expansion with heat and contraction with cold is fully utilized, the sizes of the upper dynamic balance plate, the lower dynamic balance plate and the cast aluminum rotor iron core are increased while the size of the rotor shaft is reduced as much as possible, and the assembly is convenient.

Description

Integral press-fitting mechanism and stacking system of asynchronous motor

Technical Field

The invention relates to the field of mechanical assembly, in particular to an integral press-fitting mechanism and a stacking system of an asynchronous motor.

Background

The rotor of the motor product is a component formed by combining various materials and a plurality of parts, bears the function of converting the motor into mechanical energy, is a rotating part of the motor product, and is also a butt joint component of matched equipment.

The motor rotor consists of an upper dynamic balance plate, a lower dynamic balance plate, a cast aluminum rotor core and a rotor shaft. The motor rotor is assembled by mainly adopting a principle of expansion with heat and contraction with cold to carry out press fitting, and the cast aluminum rotor core is generally assembled by adopting a hot-sleeve type, so that the aperture of the core is increased due to thermal expansion, and the rotor shaft can conveniently enter the cast aluminum rotor core.

For example, the Chinese patent has the application number: 201711201379.2 entitled "rotor core thermal sleeve rotating shaft equipment", which describes a rotor core thermal sleeve rotating shaft equipment, including a frame, a manipulator, a heating mechanism, a positioning mechanism, a shaft pressing mechanism, a control panel and a cooling mechanism arranged on the frame, wherein the heating jacking device and the heating device of the heating mechanism are arranged in a relative up-down matching way, the heating jacking device rises to a preset position for positioning the rotor core, and the heating device descends for heating the rotor core to a specified temperature; a pressing device and a positioning device of the positioning mechanism are arranged in a vertically matched manner, the heated rotor core is placed on the positioning device by a manipulator, and the positioning device and the pressing device are matched with the rotor core for pressing and positioning; the pressing shaft mechanism is positioned above the pressing device and correspondingly matched with the pressing device; the manipulator moves the rotor rotating shaft on the shaft pressing mechanism, and the shaft pressing mechanism presses the rotor rotating shaft and the positioned rotor iron core tightly for completing the shaft pressing process. The equipment heats the rotor core in a hot jacket heating mode, and meanwhile, the rotor shaft and the rotor core are assembled through the mutual matching of the positioning mechanism and the shaft pressing mechanism. However, this scheme does not heat last dynamic balance board, dynamic balance board down, can not solve the rotor shaft and cause the damaged problem of last dynamic balance board, dynamic balance board down when going through last dynamic balance board, dynamic balance board down, and simultaneously, this scheme is not cooled off the rotor shaft, does not make full use of expend with heat and contract with cold's effect and realizes the optimization of assembly effect.

To the cooling of rotor shaft, traditional way is to lower the temperature in sinking the rotor shaft into the liquid nitrogen completely, but the rotor shaft can produce cold impact with the liquid nitrogen contact, leads to the rotor shaft quench for the rotor shaft produces the crackle easily, causes the unnecessary loss, and simultaneously, the rotor shaft surface after the cooling frosts easily and skids, leads to the rotor shaft to drop from the clamping jaw, causes the damage scheduling problem also to need to be solved urgently.

Disclosure of Invention

The invention aims to solve the technical problems and provides an integral press-fitting mechanism and a stacking system of an asynchronous motor.

The invention is realized by the following technical scheme:

the integral press-mounting mechanism of the asynchronous motor comprises a frame and is characterized by further comprising a pressing mechanism, wherein the pressing mechanism can generate linear motion;

the press-mounting mechanism is arranged below the pressing mechanism and can be driven by the pressing mechanism to lift;

the pressing mechanism is arranged below the press-mounting mechanism and can move up and down through the air cylinder;

the supporting mechanism is fixedly arranged below the pressing mechanism and used for supporting the rotor iron core and the upper dynamic balance plate;

the locking mechanism is arranged between the pressing mechanism and the supporting mechanism and used for wedging the pressing mechanism and applying downward pressure to the pressing mechanism so that the pressing mechanism applies pressure to the rotor iron core, the upper dynamic balance plate and the lower dynamic balance plate on the supporting mechanism;

the positioning mechanism can enable the upper dynamic balance plate and the rotor iron core to maintain coaxial through a tensioning principle;

and the lifting mechanism is connected with the positioning mechanism and drives the positioning mechanism to lift, so that the positioning mechanism penetrates above the supporting mechanism.

Preferably, the pressing mechanism is driven by a servo motor I, and the servo motor I drives a pressing shaft to move up and down.

Preferably, the press-fitting mechanism comprises a press head connecting shaft, an adjusting plate, a press head and limiting shafts arranged on two sides of the press head, the press head connecting shaft is matched with the press shaft, and the press head connecting shaft, the adjusting plate, the press head and the limiting shafts are integrally connected.

Preferably, the pressing mechanism comprises an installation seat, two positioning blocks driven to be opened and closed by an air cylinder are symmetrically arranged on the surface of the installation seat, and a cylindrical through hole is formed in the middle of the combined positioning blocks.

Preferably, the surface of the pressing mechanism is further provided with two limiting blocks corresponding to the limiting shaft, and the limiting blocks are driven by the cylinder to translate.

Preferably, the supporting mechanism comprises a positioning assembly and a wedge assembly, the supporting mechanism comprises a mounting plate and a positioning seat arranged in the middle of the mounting plate, and a circular through hole with the same aperture as that of the through hole in the positioning block is arranged in the center of the positioning seat.

Preferably, the locking mechanism comprises clamping blocks fixedly arranged at two ends of the bottom of the pressing mechanism, and wedge-shaped assemblies arranged on the surface of the supporting mechanism and corresponding to the clamping blocks in position, a through hole is formed in the middle of each clamping block, each wedge-shaped assembly comprises a locking cylinder, a wedge-shaped block, a spring and a wedge-shaped groove, and the shape and the volume of each wedge-shaped groove are matched with those of each clamping block.

Preferably, the positioning mechanism comprises a positioning pin, an inner supporting conical shaft, an expansion sleeve, a fixing seat and an inner supporting mechanism cylinder which are coaxially arranged from top to bottom, and the inner supporting mechanism cylinder controls the expansion sleeve to open and close

Preferably, the lifting mechanism is provided with a driving motor II, a screw rod and a tensioning mechanism, the driving motor II can drive the screw rod to move up and down and drive the positioning mechanism to penetrate above the supporting mechanism.

The asynchronous motor stacking system comprises the integral asynchronous motor press-fitting mechanism.

Preferably, the asynchronous motor stacking system further comprises a liquid nitrogen cooling mechanism and a heating mechanism, the liquid nitrogen cooling mechanism is used for cooling the rotor shaft, and the heating mechanism is used for heating the rotor core and the dynamic balance plate.

Preferably, the liquid nitrogen cooling mechanism is including having the freezing storehouse of getting the material mouth of putting, it distinguishes to be provided with rotor shaft holding in the freezing storehouse, be provided with the cooling tube around the rotor shaft holding distinguishes, the equipartition has the gas outlet on the inside wall of cooling tube, cooling tube and liquid nitrogen inlet intercommunication are followed the gas outlet output gas-liquid two-phase nitrogen gas.

Preferably, the bottom of the rotor shaft accommodating area is connected with a cam indexer, and a driving shaft of the cam indexer penetrates through the axis of the rotor shaft accommodating area and drives the rotor shaft accommodating area to rotate.

Preferably, the rotor shaft accommodating area is provided with a plurality of accommodating grooves, each accommodating groove is internally provided with a fixing seat which is matched with the inner pipe diameter of the rotor shaft and is inserted into the rotor shaft, and the material taking and placing port is arranged corresponding to the axis of the fixing seat.

Preferably, the upper end of the material taking and placing port is correspondingly provided with a movable gripper, the top of the gripper is provided with a tension mechanism which can be opened and closed, and the tension mechanism can just enter the rotor shaft through the opening of the rotor shaft in a closed state.

Preferably, the heating mechanism comprises a rotor heating mechanism, a dynamic balance plate heating mechanism and a temperature measuring sensor mechanism, heating coils made of copper pipes are arranged in the rotor heating mechanism and the dynamic balance plate heating mechanism, and the heating coils are communicated with the water chiller.

The invention has the beneficial effects that:

1. reduce the rotor shaft diameter through liquid nitrogen cooling mechanism, heating mechanism heats dynamic balance board, dynamic balance board and cast aluminium rotor core down respectively, and the aperture of dynamic balance board, dynamic balance board and cast aluminium rotor core is gone up in the increase when the volume of rotor shaft is dwindled as far as possible to make full use of expend with heat and contract with cold's principle, convenient assembly.

2. In the integral press-mounting mechanism of the asynchronous motor, the rotor shaft, the lower dynamic balance plate, the cast aluminum rotor and the upper dynamic balance plate are coaxially arranged, press-mounting can be carried out simultaneously, the press-mounting efficiency is greatly improved, the concentricity of the four parts is ensured to the greatest extent, and the processing precision is improved.

3. The fixing mechanism in the liquid nitrogen cooling mechanism prevents the rotor shaft from being directly subjected to cold impact, avoids the rotor shaft from generating cracks, improves the qualified product rate of the frozen rotor shaft, and adopts the annular cooling pipe to uniformly spray gas-liquid two-phase nitrogen which is in a mist shape, so that the rotor shaft is fully and uniformly cooled, the consumption of liquid nitrogen is greatly reduced, and the manufacturing cost is reduced.

4. The rotary disc is provided with a plurality of stations in the liquid nitrogen cooling mechanism, so that a plurality of rotor shafts can be cooled simultaneously, the efficiency is improved, and the rotor shafts can be guaranteed to have enough freezing time to reach the preset freezing temperature by prolonging the rotating time.

5. The gripper for gripping the rotor shaft is tightly matched with the rotor shaft through the tensioning mechanism, so that the rotor shaft is prevented from sliding off due to small surface friction, and the accuracy of gripping parts is improved.

6. Utilize rotor heating mechanism and dynamic balance board heating mechanism to heat respectively cast aluminium rotor core and last dynamic balance board, dynamic balance board down, satisfied the different heating demands of the part of different materials, shape and size, avoid causing partial part heating not enough or the uneven problem of heating, avoid going up dynamic balance board, dynamic balance board down because the damage problem that the direct assembly of not heating caused simultaneously.

7. The arrangement of a plurality of temperature measuring mechanisms in the heating mechanism enables the workpiece to reach a proper heating temperature, and the problem that the workpiece is scrapped due to overheating or uneven heating is not easy to occur.

Drawings

FIG. 1: the top view of the asynchronous motor stacking system is shown in the invention;

FIG. 2: the front view of the integral press-mounting mechanism of the asynchronous motor is shown;

FIG. 3: is a longitudinal section view of a locking mechanism in the integral press-mounting mechanism of the asynchronous motor;

FIG. 4: is a longitudinal section view of a positioning mechanism (with a workpiece) in the integral press-mounting mechanism of the asynchronous motor;

FIG. 5: is a three-dimensional view of a positioning mechanism in the integral press mounting mechanism of the asynchronous motor;

FIG. 6: is an enlarged schematic view of part A of FIG. 5;

FIG. 7: the invention is a longitudinal section view of the top of a positioning mechanism in the integral press mounting mechanism of the asynchronous motor;

FIG. 8: is a longitudinal section view of a positioning mechanism (without a workpiece) in the integral press-mounting mechanism of the asynchronous motor;

FIG. 9: is a perspective view of the liquid nitrogen cooling mechanism of the present invention;

FIG. 10: is a schematic diagram of the internal structure of the liquid nitrogen cooling mechanism in the invention;

FIG. 11: is a longitudinal section view of the liquid nitrogen cooling mechanism in the invention;

FIG. 12: is a schematic view of the internal structure (without a frame) of the heating mechanism in the invention;

FIG. 13: the top view of the internal structure of the heating mechanism is shown in the invention;

FIG. 14: is a side view of a part of the structure of the heating mechanism in the present invention;

FIG. 15: is a schematic diagram of a moving mechanism in the heating mechanism of the present invention.

The figures are labeled as follows:

1: asynchronous machine integral press-fit mechanism 1, 11: pressing mechanism, 111: servo motors i, 112: shaft pressing, 12: press-fitting mechanism, 121: ram connecting shaft, 122: indenter, 123: limiting shaft, 13: pressing mechanism, 131: positioning block, 132: stopper, 14: support mechanism, 141: positioning seat, 142: ,15: locking mechanism, 151: a cartridge, 152: locking cylinder, 153: wedge groove, 154: wedge block, 16: positioning mechanism, 161: positioning shaft, 1610: accommodating chamber, 1611: recess, 1612: nose bar, 1613: first ring groove, 1614: first binding screw, 1615: plunger, 1616: rod portion, 1617: an insertion hole, 162: inner support conical shaft, 1621: head, 1622: outer conical surface, 1623: inner conical surface, 163: tensioning sleeve, 1630: first section, 1631: second section, 1632: ligation face, 1633: second ring groove, 1634: second fastening screw, 164: fixing seat, 165: drive cylinder, 166: positioning pins;

2: liquid nitrogen cooling mechanism, 21: freezing bin, 23: cooling tube, 24: liquid inlet, 25: rotary disk, 26: cam indexer, 27: a housing;

3: heating mechanism, 31: intermediate frequency heater I310: heating base I, 311: heating pin, 32: intermediate frequency heater ii, 33: superaudio heater, 330: heating stage, 331: heating base II, 34: sensor i, 35: sensor ii, 351: caterpillar, 36: sensor iii, 37: mount, 370: slide rail, 371: transfer cylinder, 372: direction lift cylinder, 38: a clamping jaw, 380: a clamping cylinder;

4: rotor core, 5: rotor shaft, 6: upper dynamic balance plate, 7: lower dynamic balance plate, 8: cleaning mechanism, 91: rotor core material loading frame, 92: work or material rest on the dynamic balance board, 93: rotor shaft material loading frame, 100: robot i, 200: and a robot II.

Detailed Description

In order that the objects, advantages and features of the invention will be more clearly and specifically shown and described, there shall now be shown and explained by way of the following non-limiting illustration of preferred embodiments. The embodiment is only a typical example of the technical solution of the present invention, and any technical solution formed by adopting equivalent replacement or equivalent transformation falls within the scope of the present invention.

It is also stated that in the description of the schemes, it is to be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" in this document are used for descriptive purposes only and are not to be construed as indicating or implying a ranking of importance or an implicit indication of the number of technical features shown. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the present invention, "a plurality" means two or more unless specifically defined otherwise.

The following describes the entire press-fitting mechanism 1 and the stacking system of the asynchronous motor in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 2 to 4, the overall asynchronous motor press-fitting mechanism 1 disclosed in the present invention includes a frame, the frame includes a base and a frame assembly, a press-fitting mechanism 11 fixed by a mounting base is disposed on the frame, the press-fitting mechanism 11 is driven by a servo motor i 111, the servo motor i 111 drives a press shaft 112 to move up and down, a press-fitting mechanism 12 and a pressing mechanism 13 are movably disposed below the press-fitting mechanism 11 through a slide rail, and the press-fitting mechanism 12 is disposed below the press-fitting mechanism 11 and can be driven by the press-fitting mechanism 11 to move up and down; the pressing mechanism 13 is arranged below the press-fitting mechanism 12 and can move up and down through an air cylinder; the supporting mechanism 14 is fixedly arranged below the pressing mechanism 13 and is used for supporting the rotor core 4 and the upper dynamic balance plate 6; the locking mechanism 15 is arranged between the pressing mechanism 13 and the supporting mechanism 14, and is used for wedging the pressing mechanism 13 and applying a downward force to the pressing mechanism 13, so that the pressing mechanism 13 applies a pressure to the rotor core 4, the upper dynamic balance plate 6 and the lower dynamic balance plate 7 on the supporting mechanism 14; the positioning mechanism 16 can enable the upper dynamic balance plate 6 and the rotor iron core 4 to maintain coaxial through a tensioning principle; the lifting mechanism is connected with the positioning mechanism 16 and drives the positioning mechanism 16 to lift, so that the positioning mechanism 16 passes through the upper part of the supporting mechanism 14.

As shown in fig. 2, the press-fitting mechanism 12 includes a press head connecting shaft 121, an adjusting plate, and a press head 122, the press head connecting shaft 121 matches with the press shaft 112, the press head connecting shaft 121, the adjusting plate, and the press head 122 are integrally connected, and when the press shaft 112 descends and abuts against the press head connecting shaft 121, the press shaft 112 descends continuously to drive the press head connecting shaft 121 and the press head 122 to descend simultaneously.

As shown in fig. 2, the pressing mechanism 13 includes a mounting seat, two positioning blocks 131 driven by an air cylinder to open and close are symmetrically disposed on the surface of the mounting seat, and after the positioning blocks 131 are combined, a cylindrical through hole is formed in the middle of the combined positioning blocks, and the diameter of the through hole is equivalent to the diameter of the rotor shaft 5, so that the rotor shaft 5 can just pass through the through hole.

Specifically, a pressing assembly is arranged between the press-fitting mechanism 12 and the pressing mechanism 13, the pressing assembly includes limiting shafts 123 symmetrically arranged at two ends of the bottom of the press-fitting mechanism 12, the height of the limiting shafts 123 is greater than the height of the pressing head 122, and in this embodiment, the height difference between the limiting shafts 123 and the pressing head 122 is the same as the height of the rotor core 4; the pressing assembly further comprises a limiting block 132 which is arranged on the surface of the pressing mechanism 13 and is in a two-stage step shape corresponding to the position of the limiting shaft 123, the height difference between the height of the higher end and the height of the lower end of the limiting block 132 is equal to the height of the rotor core 4, a limiting cylinder is fixedly connected to the outer side of the higher end of the limiting block 132, in the first state, the limiting cylinder extends out to push the limiting block 132 to move inwards, after the press-fitting mechanism 12 descends, the limiting shaft 123 abuts against the higher end of the limiting block 132, and when the rotor shaft 5 is placed on the positioning block 131, the pressure head 122 just touches the top of the rotor shaft 5; in the second state, the limiting cylinder retracts to drive the limiting block 132 to move back, the press-fitting mechanism 12 descends at the moment, the limiting shaft 123 abuts against the lower end of the limiting block 132, and the pressure head 122 descends compared with the first state to push the rotor shaft 5 to move downwards.

As shown in fig. 2, the supporting mechanism 14 includes an installation plate, an adjusting block disposed around the installation plate for adjusting the position of the installation seat, and a positioning seat 141 disposed in the middle of the installation plate, a cylindrical installation table 142 protrudes from the center of the positioning seat 141, and a circular through hole having a diameter consistent with that of the through hole of the positioning block 131 is disposed at the center of the cylindrical installation table 142, so that the cross section of the cylindrical installation table 142 is in a circular ring shape, the shape and area of the circular cross section are consistent with those of the upper dynamic balance plate 6, and the iron core 4 can be stably fixed on the cylindrical installation table 142.

Further, as shown in fig. 2 to 3, a locking mechanism 15 is disposed between the pressing mechanism 13 and the supporting mechanism 14, the locking mechanism 15 is configured to wedge the pressing mechanism 13, and apply a downward force to the pressing mechanism 13, so that the pressing mechanism 13 applies a pressure to the rotor core 4, the upper dynamic balance plate 6, and the lower dynamic balance plate 7 on the supporting mechanism 14, the locking mechanism 15 includes fixture blocks 151 symmetrically disposed at two ends of the bottom of the pressing mechanism 13, and a wedge-shaped hole is disposed in the middle of the fixture block 151; the locking mechanism 15 further comprises a wedge assembly arranged on the surface of the supporting mechanism 14, the wedge assembly is sequentially provided with a locking cylinder 152, a wedge block 154, a spring and a wedge groove 153, the shape and the volume of the wedge groove 153 are matched with those of the fixture block 151, and the position of the wedge groove 153 corresponds to that of the fixture block 151; the shape and volume of the wedge-shaped hole are matched with those of the wedge-shaped block 154, and when the fixture block 151 is completely embedded into the wedge-shaped groove 153, the wedge-shaped block 154 can just pass through the wedge-shaped hole; in the first state, the pressing mechanism 13 descends, the latch 151 enters the wedge-shaped groove 153, the locking cylinder 152 extends to push the wedge-shaped block 154 to pass through the wedge-shaped hole on the latch 151, and the pressing mechanism 13 is locked; in the second state, the air cylinder retracts to drive the wedge block 154 to return to the original position, the pressing mechanism 13 ascends, and the clamping block 151 leaves the wedge groove 153.

As shown in fig. 2, 4 and 8, the lifting mechanism is provided with a driving motor ii and a screw rod 172, the driving motor ii can drive the screw rod 172 to move up and down, the top of the lifting mechanism is provided with a positioning mechanism 16, the positioning mechanism 16 includes a tension sleeve 163 which can be controlled by an air cylinder to open and close, the driving motor ii on the lifting mechanism drives the positioning mechanism 16 to pass through a through hole in the middle of the supporting mechanism 14, and the positioning mechanism 16 passes through the supporting mechanism 14 and is partially used for fixing the upper dynamic balance plate and the iron core 4.

Specifically, as shown in fig. 2 and fig. 4 to fig. 8, the positioning mechanism 16 includes a positioning shaft 161, an inner supporting conical shaft 162, a tensioning sleeve 163, a fixing seat 164, and a driving cylinder 165, which are coaxially arranged from top to bottom, a positioning pin 166 for positioning is provided inside the positioning shaft 161, and the positioning shaft 161 and the positioning pin 166 form the first positioning mechanism 16; the tensioning sleeve 163 is arranged between the inner supporting conical shaft 162 and the fixed seat 164 and sleeved on the inner supporting conical shaft 162, the driving cylinder 165 drives the inner supporting conical shaft 162 to move downwards to extrude the tensioning sleeve 163, so that the outer diameter of the tensioning sleeve 163 is expanded outwards for positioning, and the inner supporting conical shaft 162, the tensioning sleeve 163 and the driving cylinder 165 form a second positioning mechanism 16; and the inner supporting conical shaft 162 is fixedly connected with the positioning shaft 161, so that the first positioning mechanism 16 and the second positioning mechanism 16 are positioned synchronously.

Specifically, as shown in fig. 5, the positioning shaft 161 has an opening at the top, a hollow accommodating cavity 1610 extends from the opening to the inside, and the positioning pin 166 is disposed at the axial center of the accommodating cavity 1610. In the present embodiment, the positioning pin 166 is used for positioning the rotor shaft 5, and the top of the positioning pin 166 is tapered so as to be inserted into the rotor shaft 5.

Further, as shown in fig. 7, in order to reduce the hard contact between the rotor shaft 5 and the positioning pin 166, the receiving cavity 1610 is T-shaped, and has an inward concave portion 1611 at the axis of the cavity bottom, the bottom of the positioning pin 166 has a protruding rod 1612 matching the concave portion 1611, the protruding rod 1612 is inserted into the concave portion 1611, and a spring is disposed between the protruding rod 1612 and the concave portion 1611, and two ends of the spring abut against the protruding rod 1613 and the concave portion 1611, respectively. The spring mainly serves as a shock-absorbing buffer to reduce wear on the rotor shaft 5. In other possible embodiments, the spring may be replaced by other elastic members having a shock-absorbing function.

As shown in fig. 7 to 8, the bottom of the positioning shaft 161 of the present invention has a plug-in rod 1615 extending outward from its axis. The inner support conical shaft 162 is T-shaped, the head 1621 of the inner support conical shaft abuts against the positioning shaft 161, the rod 1616 of the inner support conical shaft is arranged inside the fixing seat 164 and connected with the driving cylinder 165, the axis of the head 1621 is provided with an insertion hole 1617 extending downwards from the top of the head, and the insertion rod 1615 is fixedly arranged in the insertion hole 1617 so as to realize the connection and fixation between the inner support conical shaft 162 and the positioning shaft 161.

Specifically, the bottom of the inserted rod 1615 is provided with a first annular groove 1613 along the outer wall thereof, the rod portion 1616 of the inner prop shaft 162 is annularly and uniformly distributed with a group of through holes communicated with the insertion hole 1617 along the side wall thereof, and a first fastening screw 1614 penetrates through the through holes and abuts against the first annular groove 1613, so as to fasten the positioning shaft 161 and the inner prop shaft 162 together. Because the inner support cone shaft 162 is disposed inside the fixing seat 164, the annular structure of the first ring groove 1613 has a larger fault tolerance rate than other hole-shaped structures, and the fastening between the first fastening screw 1614 and the first ring groove 1613 can be ensured.

Similarly, the outer wall of the tensioning sleeve 163 also has a second annular groove 1633, the outer wall of the fixing seat 164 has a through hole, and a second fastening screw 1634 passes through the through hole to abut against the second annular groove 1633, so as to fasten the tensioning sleeve 163 and the fixing seat 164 together.

As shown in fig. 5 to 6, in order to facilitate the installation of the first fastening screw 1614, a set of kidney-shaped holes are uniformly distributed on the side wall of the fixing base 164, and the kidney-shaped holes are vertically arranged and have a length not less than the moving distance of the inner supporting conical shaft 162.

As shown in fig. 7 to 8, the tightening sleeve 163 includes a first portion 1630 and a second portion 1631 connected to each other, a connection surface 1632 is formed between the first portion 1630 and the second portion 1631, the first portion 1630 is slidably attached to the head 1621, a plurality of strip-shaped gaps extending downward from an opening of the first portion 1630 are uniformly distributed on a sidewall of the first portion 1630, a diameter of the second portion 1631 is smaller than that of the first portion 1630, and the second portion 1631 is embedded in the fixing base 164 and is fixedly connected to the fixing base 164 through a second fastening screw 1634. The tensioning sleeve 163 is made of 65Mn spring steel, the gap is formed, so that the first portion 1630 has an expansion space and has an outward expanding tension, when the head 1621 presses the first portion 1630 downward, the side wall of the first portion 1630 can expand outward along with the head 1621, so as to expand the outer diameter of the first portion 1621, and the downward dynamic balance plate arranged outside the tensioning sleeve 163 is tightly attached to the outer wall of the first portion 1630, so as to position the downward dynamic balance plate.

Further, the head portion 1621 has an outer conical surface 1622 with a diameter gradually decreasing from top to bottom, the inner wall of the first portion 1630 has an inner conical surface 1623 matching with the outer conical surface 1622, the outer conical surface 1622 is attached to the inner conical surface 1623, and the outer conical surface 1622 moves down along the inner conical surface 1623 to expand the first portion 1630, so as to enlarge the outer diameter of the first portion 1630. The inclination of the outer and inner

tapered surfaces

1622, 1623 in the preferred embodiment is preferably 10 °. As shown in fig. 1, in the expanded state of the expansion sleeve 163, the head 1621 presses the first portion 1630 downward as much as possible, so that the sidewall thereof expands outward; as shown in fig. 1, in the loosened state of the tensioning sleeve 163, the head 1621 is as far away from the first portion 1630 as possible, and the first portion 1630 is less compressed.

As shown in fig. 8, the fixing seat 164 has a bottom plate, a set of support rods is fixedly arranged at the bottom of the bottom plate, the support rods are erected on the driving cylinder 165, and the screw rod 172 extends into the fixing seat 164 and is fixedly connected with the inner supporting conical shaft 162. The bottom plate can improve the stability of the fixing seat 164 and reduce the possibility of shaking. The outer diameters of the fixing seat 164 and the positioning shaft 161 in the preferred embodiment are the same, and in other possible embodiments, the outer diameter of the fixing seat 164 may also gradually increase from top to bottom.

Further, the screw rod 172 is sleeved with a limiting threaded sleeve, the limiting threaded sleeve is located between the bottom plate and the driving cylinder 165 and limits the moving range of the screw rod 172, and the phenomenon that the excessive displacement of the screw rod 172 causes the excessive extrusion of the expansion sleeve to damage the lower dynamic balance plate is avoided.

Further, as shown in fig. 2, the operation principle and the specific structure of the driving motor i and the driving motor ii are similar to those of the chinese patent with application number 201910534907.9, and are not described herein again.

In a specific implementation process, the specific operation process of the integral press-fitting mechanism 1 of the asynchronous motor is as follows:

firstly, a driving motor II in the lifting mechanism drives a positioning mechanism 16 to lift through a screw rod 172, so that the positioning mechanism 16 passes through a through hole arranged on a supporting mechanism 14, meanwhile, a tensioning sleeve 163 arranged on the positioning mechanism 16 is controlled to be opened through an air cylinder, and a robot I100 sequentially passes an upper dynamic balance plate, an iron core 4 and a lower dynamic balance plate through the top of the positioning mechanism 16 and is fixed by the tensioning sleeve 163;

secondly, the pressing mechanism 13 is driven by an air cylinder to descend to a position flush with the rotor core 4, at the moment, two positioning blocks 131 on the surface of the pressing mechanism 13 are driven by the air cylinder to be combined, the rotor shaft 5 is fixedly placed in a through hole in the middle of the positioning blocks 131, the driving motor I drives the press-mounting mechanism 12 to descend, the limiting shaft 123 abuts against the higher end of the limiting block 132 and pushes the pressing mechanism 13 to be pressed with the rotor core 4, the upper dynamic balance plate 6 and the lower dynamic balance plate 7, meanwhile, the clamping block 151 is embedded into the wedge-shaped groove 153, and the pressing mechanism 13 and the supporting mechanism 14 are locked by the locking mechanism 15 under the action of the air cylinder;

further, the expansion sleeve is retracted and reset under the action of the air cylinder, and meanwhile, the lower end of the limiting block 132 is driven by the air cylinder to correspond to the limiting shaft 123;

then, the driving motor i continues to push the pressure head connecting shaft 121 and the pressure head 122 to descend through the pressure shaft 112, the limiting shaft 123 abuts against the lower end of the limiting block 132, the pressure head 122 pushes the rotor shaft 5 to pass through the central holes of the rotor core 4 and the lower dynamic balance plate, and meanwhile, the driving motor ii drives the positioning mechanism 16 to descend and reset through the lead screw 172, so that the rotor shaft 5 finally passes through the upper dynamic balance plate;

finally, the locking mechanism 15 is unlocked, the driving motor I drives the press-fitting mechanism 12 to lift and reset, the pressing mechanism 13 is driven by the cylinder to lift and reset, and the robot I100 takes away the workpiece after press-fitting.

As shown in fig. 1, the asynchronous motor stacking system includes an asynchronous motor integral press-mounting mechanism 1, and further includes a liquid nitrogen cooling mechanism 2 and/or a heating mechanism, that is, the asynchronous motor stacking system may be composed of the asynchronous motor integral press-mounting mechanism 1 alone, or composed of the asynchronous motor integral press-mounting mechanism 1 and the liquid nitrogen cooling mechanism 2, or composed of the asynchronous motor integral press-mounting mechanism 1 and the heating mechanism, in this embodiment, the asynchronous motor stacking system is preferably composed of the asynchronous motor integral press-mounting mechanism 1, the liquid nitrogen cooling mechanism 2 and the heating mechanism together, the liquid nitrogen cooling mechanism 2 is used for cooling the rotor shaft 5, and the heating mechanism is used for heating the rotor core 4 and the dynamic balance plate.

Further, as shown in fig. 1, the asynchronous motor stacking system further includes a cleaning mechanism 8, a rotor core feeding frame 91, a dynamic balance plate feeding frame 92, and a rotor shaft feeding frame 93, where the rotor core feeding frame 91, the dynamic balance plate feeding frame 92, and the rotor shaft feeding frame 93 are respectively used for placing a rotor core to be assembled, a dynamic balance plate, and a rotor shaft, and the cleaning mechanism 8 is used for cleaning a workpiece before press-fitting.

As shown in fig. 9-11, the liquid nitrogen cooling mechanism 2 is used for freezing the rotor shaft 5, and includes a freezing chamber 21 having a material taking and placing port, and a rotatable rotor shaft accommodating area is arranged in the freezing chamber 21 and is used for fixing the rotor shaft 5; an annular cooling pipe 23 is arranged above the rotor shaft accommodating area along the outer contour of the rotor shaft accommodating area, air outlets are uniformly distributed on the inner side wall of the cooling pipe 23, the cooling pipe 23 is communicated with a liquid nitrogen inlet 24, and gas-liquid two-phase nitrogen is output from the air outlets to freeze the rotor shaft 5.

According to the invention, the rotor shaft 5 is frozen by using gas-liquid two-phase nitrogen, the gas-liquid two-phase nitrogen is in a mist shape, compared with a mode that liquid nitrogen directly contacts with the rotor shaft 5, the cooling and freezing mode that the gas-liquid two-phase nitrogen contacts with the rotor shaft 5 is milder, the cold impact on the rotor shaft 5 can be effectively reduced, the rotor shaft 5 is prevented from generating cracks due to larger cold impact, the qualification rate of the rotor shaft 5 after being frozen is greatly improved, and unnecessary loss is reduced. On the other hand, the gas-liquid two-phase nitrogen can greatly reduce the consumption of the nitrogen, save the consumption of the nitrogen and reduce the manufacturing cost of the freezing link.

Specifically, as shown in fig. 10, due to the sinking principle of the cold air, the cooling pipe 23 is disposed above the rotor shaft accommodating area, so that the gas-liquid two-phase nitrogen gas ejected from the air outlet is in full contact with the rotor shaft 5. And the cooling pipe 23 is annular, and the gas outlets are uniformly distributed on the inner side of the cooling pipe 23, so that gas-liquid two-phase nitrogen sprayed from the gas outlets can be in all-directional contact with the rotor shaft 5, and the phenomenon of uneven freezing is avoided.

Specifically, as shown in fig. 10 and 11, the rotor shaft accommodating section includes a rotary disk 25 and a cam indexer 26, a drive shaft of the cam indexer 26 passes through an axis of the rotary disk 25 and drives the rotary disk 25 to rotate, the rotary disk 25 is coaxially disposed in the freezing chamber 21, and the drive shaft passes through the axis of the freezing chamber 21. The cam indexer 26 drives the rotary disk 25 to rotate intermittently at the same time interval, so as to precisely control the time of one rotation of the rotary disk 25, and ensure that the time of one rotation of the rotary disk 25 is not less than the shortest freezing time of the rotor shaft 5. In the preferred embodiment, the time of one rotation of the rotary disk 25 is equal to the freezing time required by the rotor shaft 5, that is, the rotor shaft 5 is put into the rotary disk 25 from the material taking and placing opening for freezing, and when the rotary disk 25 rotates one rotation, the rotor shaft 5 returns to the position below the material taking and placing opening again, the rotor shaft 5 is frozen and can be taken out from the material taking and placing opening, so that the rotation efficiency of the rotary disk 25 can be improved to the maximum extent. In the preferred embodiment, the time of one rotation of the rotary disk 25 is 30 minutes, and in other possible embodiments, the time of one rotation of the rotary disk 25 can be specifically set according to the diameter of the rotary disk 25.

In the scheme, the material taking and placing port is fixed, so that the rotor shaft 5 rotates relative to the material taking and placing port to prolong the freezing time of the rotor shaft 5; in other embodiments, the rotor shaft 5 may be fixed such that the material pick-and-place opening rotates relative to the rotor shaft 5. In another possible solution, the rotor shaft 5 and the material taking and discharging opening may be fixed, and a plurality of material taking and discharging openings may be provided to take out the rotor shaft 5.

As shown in fig. 10 and 11, in order to fix the rotor shaft 5, a set of receiving grooves are uniformly distributed on the rotary disk 25 along the edge thereof, and the outer diameter of the receiving grooves is matched with the inner diameter of the rotor shaft 5 and is inserted into the rotor shaft 5. Furthermore, the diameter of the receiving groove gradually decreases from bottom to top to form a cone shape, and the receiving groove can be rapidly inserted into the rotor shaft 5 due to the structural arrangement. The accommodating groove and the rotor shaft 5 are mutually fixed in an inserting mode, so that the rotor shaft 5 can be conveniently grabbed and placed, and the efficiency is improved. Of course, in other possible embodiments, other mechanisms for fixing the rotor shaft 5 may be provided on the rotary disk 25.

As shown in fig. 9, in order to improve the automation of the present invention, the rotor shaft 5 is grabbed and placed by the hand 28, and in order to facilitate the operation of the hand 28, the material taking and placing opening is arranged corresponding to the axis of the accommodating groove, such a structure arrangement enables the hand 28 to vertically move up and down to complete the grabbing and placing of the rotor shaft 5, thereby greatly improving the grabbing and placing efficiency of the rotor shaft 5. Meanwhile, only one material taking and discharging port is arranged, so that the sealing performance of the freezing bin 21 can be guaranteed, and the leakage of nitrogen is reduced.

In order to guarantee 5 rotatory a week back of rotor shaft are located again temperature when getting the material mouth reaches predetermined freezing temperature, be provided with array temperature sensor (not shown in the figure) in the freezing storehouse 21, temperature sensor certainly get material mouth downwardly extending setting, just to detect the temperature of getting the rotor shaft 5 of material mouth. The temperature sensor of array arranges according to the difference in temperature between the temperature of the not co-altitude in the vertical direction to ensure that the bulk temperature of rotor shaft 5 all reaches predetermined temperature, has improved right the accuracy nature of the temperature detection of rotor shaft 5 avoids rotor shaft 5 that takes out to freeze inhomogeneous.

As shown in fig. 12, in order to further insulate the freezing chamber 21, a housing 27 matching with the outer contour of the freezing chamber 21 is provided outside the freezing chamber 21, and a vacuum space exists between the housing 27 and the freezing chamber 21. The vacuum space is arranged to keep the temperature in the freezing chamber 21 constant, so that the energy loss is reduced, and the consumption of nitrogen is further reduced.

As shown in fig. 12, the heating mechanism includes a frame, the frame includes base, stand, guide rail and protection component, shown protection component both sides are provided with the side door of accessible cylinder control switching, be provided with heating mechanism 3 on the frame, heating mechanism 3 includes rotor heating mechanism and dynamic balance board heating mechanism, movably on the guide rail be provided with moving mechanism, moving mechanism passes through the guide rail and is in rotor heating mechanism top up-and-down motion, moving mechanism includes the mount pad 37 of accessible cylinder translation and can set up with opening and shutting clamping jaw 38 on the mount pad 37, divide subassembly heating system still to include temperature measurement mechanism, temperature measurement mechanism is including movably setting up first temperature measurement subassembly and the second temperature measurement subassembly of rotor heating mechanism and dynamic balance board heating mechanism top.

As shown in fig. 12 to 14, rotor heating mechanism includes intermediate frequency heater i 31 and intermediate frequency heater ii 32 that the symmetry set up, intermediate frequency heater i 31 and intermediate frequency heater ii 32 are including heating base i 310, heating pin 311 and heating coil, dynamic balance board heating mechanism comprises two at least superaudio heaters 33 that the symmetry set up, are provided with four superaudio heaters 33 in this scheme, superaudio heater 33 is including heating base ii 331 and heating platform 330, the axle center department of heating platform 330 is provided with bellied cylinder, the inside heating coil that is provided with of heating platform 330, heating coil is made by hollow copper pipe, heating coil copper pipe in the rotor heating mechanism with heating coil copper pipe in the dynamic balance board heating mechanism is linked together with big cold water machine and little cold water machine respectively, heating coil's cooling method and heating coil and the connected mode and the water delivery mode of cold water machine please refer to patent application number respectively and be: 201320069698.3 and 201320069698.3.

Further, as shown in fig. 12 and 15, the moving mechanism includes an installation base 37, a heating rotor guiding lifting cylinder 372 driving the installation base 37 to move up and down, a clamping jaw 38 provided on the installation base 37 and capable of opening and closing, a transfer cylinder 371 driving the clamping jaw 38 to translate along the Z-axis direction, and a clamping cylinder 380 provided on both sides of the clamping jaw 38 and controlling the opening and closing of the clamping jaw 38, the surface of the mounting seat 37 is also provided with a slide rail 370, the clamping jaw 38 is controlled by a transfer cylinder 371, and moves along the direction of the Z axis on the slide rail 370, the number of the moving mechanisms is consistent with that of the intermediate frequency heaters, in the scheme, because the middle-frequency heater I31 and the middle-frequency heater II 32 are symmetrically arranged in the heating system of the sub-component, therefore, a moving mechanism I and a moving mechanism II are respectively and correspondingly arranged right above the intermediate frequency heater I31 and the intermediate frequency heater II 32.

As shown in fig. 12 and 14, the first temperature measurement assembly includes at least one sensor i 34 (preferably two in this embodiment, to prevent one of the sensors from being damaged or measuring error), the sensor i 34 is fixed by a fixed block and driven by a cylinder to move up and down on the mounting seat 37, the second temperature measurement assembly includes a chain rail 351 and at least two sensors ii 35 that move up and down above the dynamic balance plate heating mechanism by the chain rail 351, the sensors ii 35 are driven by the cylinder to move, the second temperature measurement assembly further includes a temperature measurement rack fixedly arranged at one end of the heating table 330 and a sensor iii 36 arranged at the top of the temperature measurement rack in a liftable manner, at least one sensor iii 36 is arranged near each heating table 330, and preferably two in this embodiment.

Further, be provided with control panel (not shown in the figure) in the frame, control panel passes through the rocking arm locking subassembly and is connected with the frame, be provided with position locking mechanism on the rocking arm locking subassembly, can monitor the robot and pass through to initiatively dodge, control panel and cold water machine, heating mechanism 3, temperature measurement mechanism and side door all electricity are connected.

In a specific implementation process, the working process of the partitioned component heating system in the scheme is as follows:

the heating system is started firstly, the guide lifting cylinder 372 controls the side door to be opened, the mounting seat 37 on the transferring mechanism I is controlled to descend by the heating rotor guide lifting cylinder 372, meanwhile, the transferring cylinder 371 drives the clamping jaw 38 to extend out of the mounting seat 37 along the sliding rail 370, and the clamping jaw 38 is in a closed state (namely, the state of just being capable of fixing the rotor core 4).

Secondly, the robot is monitored by the rocker arm locking assembly, the control panel is rotated to other directions, the robot I100 enters through a side door inlet, the rotor core 4 is conveyed to the clamping jaw 38, then the upper dynamic balance plate 6 and the lower dynamic balance plate 7 are conveyed to different heating tables 330 respectively and then leave, and the side door is closed.

Then, the ultrasonic heater 33 starts to heat, at this time, the clamping jaw 38 moves to the intermediate frequency heater i 31, the rotor core 4 is placed on the heating base i 310, the heating pin 311 penetrates through the inside of the core 4, after the position is determined, the clamping jaw 38 is opened, the original position is returned, and the intermediate frequency heater i 31 starts to heat.

After heating for a certain time (the heating time of the intermediate frequency heater I31 is preferably 50 minutes), the clamping jaw 38 falls to the position of the iron core 4 and then is closed, the iron core 4 is clamped and then rises to the sensor I34 for temperature measurement, if the required temperature is reached, the clamping jaw 38 descends, the side door is opened, the robot I100 transports the iron core 4 to the clamping jaw 38 on the transfer mechanism II, the robot I100 leaves, the side door is closed, the clamping jaw 38 repeats the previous action of the clamping jaw 38, and the iron core 4 is placed on the intermediate frequency heater II 32 for secondary heating; if the required temperature is not reached, the iron core 4 is transported to the second clamping jaw 38 through the robot I100 after the iron core is continuously heated to the required temperature.

And finally, after the iron core 4 is heated for the second time, the side door is opened, the robot I100 enters through the side door inlet, the iron core 4, the upper dynamic balance plate 6 and the lower dynamic balance plate 7 are respectively swept and taken away, and heating is completed.

In a preferred embodiment of the present invention, the asynchronous motor stacking system includes an asynchronous motor integral press-fitting mechanism 1, a liquid nitrogen cooling mechanism 2 (for cooling the rotor shaft 5), and a heating mechanism (for heating the rotor core 4 and the upper dynamic balance plate 6, and the lower dynamic balance plate 7, and the asynchronous motor stacking system in this scheme has the following specific operation processes:

firstly, a robot I100 takes a rotor core 4 out of a rotor core feeding frame 91 and conveys the rotor core 4 to a cleaning mechanism 8 for cleaning;

secondly, starting a heating device, opening a side door, extending a clamping jaw to a proper position, taking out a rotor core 4, an upper dynamic balance plate 6 and a lower dynamic balance plate 7 from a cleaning mechanism 8 and a dynamic balance plate feeding frame 92 respectively by a robot I100, placing the rotor core 4 on the clamping jaw by the robot I100, placing the dynamic balance plate on a heating table and then leaving, placing the rotor core 4 on an intermediate frequency heater I by the clamping jaw and then returning, and closing the side door to start heating;

thirdly, opening a side door again after the first heating stage is finished, extending a second clamping jaw to the right position, placing the rotor iron core 4 on the second clamping jaw by the robot I100 and then leaving, placing the rotor iron core 4 on the intermediate-frequency heater II by the second clamping jaw and then returning, and closing the side door for secondary heating;

fourthly, after heating is finished, temperature is measured by a temperature measuring mechanism, side doors on two sides are opened, and the rotor core 4, the upper dynamic balance plate 6 and the lower dynamic balance plate 7 are taken out by the robot I100 and are conveyed to the integral press-mounting mechanism 1 of the asynchronous motor;

fifthly, starting the integral press-mounting mechanism 1 of the asynchronous motor, driving the positioning mechanism 16 to lift by the lifting mechanism 17, enabling the positioning mechanism 16 to penetrate through the supporting mechanism 14, controlling opening of a tensioning sleeve 163 arranged on the positioning mechanism 16 through an air cylinder (the part can be simultaneously performed with the first step, the second step and the third step), and enabling an upper dynamic balance plate, the iron core 4 and a lower dynamic balance plate to sequentially penetrate through the top of the positioning mechanism 16 by the robot I100 and to be fixed by the tensioning sleeve 163;

sixthly, the pressing mechanism 13 descends to a position flush with the rotor core 4, the rotor shaft 5 is fixedly placed in a through hole in the middle of the positioning block 131, the driving motor I drives the pressing mechanism 12 and the pressing mechanism 13 to descend, the rotor core 4 is pressed against the upper dynamic balance plate 6 and the lower dynamic balance plate 7, the locking mechanism 15 locks the pressing mechanism 13 and the supporting mechanism 14, and the expansion sleeve is contracted and reset;

the seventh step, starting the liquid nitrogen cooling mechanism 2, taking the rotor shaft 5 out of the rotor shaft feeding rack 93 by the robot II 200, placing the rotor shaft in the rotor shaft accommodating area in the freezing chamber 21 through the material taking and placing port, fixing the rotor shaft by the accommodating groove, rotating the cam indexer 26, and starting to cool the rotor shaft 5 (in order to maintain the temperature of each workpiece in a proper range, the steps can be performed simultaneously with the first to fifth steps);

eighthly, after the rotor shaft 5 is cooled, taking the rotor shaft 5 out of the freezing bin 21 through the gripper 28, and conveying the rotor shaft to the integral press-fitting mechanism 1 of the asynchronous motor by the robot II 200;

ninth, the driving motor i continues to push the pressure head connecting shaft 121 and the pressure head 122 to descend through the pressure shaft 112, the limiting shaft 123 abuts against the lower end of the limiting block 132, the pressure head 122 pushes the rotor shaft 5 to pass through the central holes of the rotor core 4 and the lower dynamic balance plate, and meanwhile, the driving motor ii drives the positioning mechanism 16 to descend and reset through the lead screw 172, so that the rotor shaft 5 finally passes through the upper dynamic balance plate;

tenth step, the locking mechanism 15 is unlocked, the driving motor I drives the press-fitting mechanism 12 to lift and reset, the pressing mechanism 13 drives the press-fitting mechanism to lift and reset through the cylinder, and the robot I100 takes away the workpiece after press-fitting.

The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.

Claims

1. The integral press-fitting mechanism of the asynchronous motor comprises a frame and is characterized by further comprising:

the pressing mechanism (11), the said pressing mechanism (11) can produce the linear motion;

the press-fitting mechanism (12) is arranged below the pressing mechanism (11) and can be driven by the pressing mechanism (11) to lift;

the pressing mechanism (13) is arranged below the press-fitting mechanism (12) and can move up and down through an air cylinder;

the supporting mechanism (14) is fixedly arranged below the pressing mechanism (13) and is used for supporting the rotor iron core (4) and the upper dynamic balance plate (6);

the locking mechanism (15) is arranged between the pressing mechanism (13) and the supporting mechanism (14) and is used for wedging the pressing mechanism (13) and applying downward pressure to the pressing mechanism (13) so that the pressing mechanism (13) applies pressure to the rotor core (4), the upper dynamic balance plate (6) and the lower dynamic balance plate (7) on the supporting mechanism (14);

the positioning mechanism (16) can enable the upper dynamic balance plate (6) and the rotor iron core (4) to maintain coaxial through a tensioning principle;

and the lifting mechanism (17) is connected with the positioning mechanism (16) and drives the positioning mechanism (16) to lift, so that the positioning mechanism (16) penetrates above the supporting mechanism (14).

2. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the pressing mechanism (11) is driven by a servo motor I (111), and the servo motor I (111) drives a pressing shaft (112) to move up and down.

3. The integral press-fitting mechanism of the asynchronous motor according to claim 2, characterized in that: the press-fitting mechanism (12) comprises a press head connecting shaft (121), an adjusting plate, a press head (122) and limiting shafts (123) arranged on two sides of the press head (122), the press head connecting shaft (121) is matched with the press shaft (112), and the press head connecting shaft (121), the adjusting plate, the press head (122) and the limiting shafts (123) are integrally connected.

4. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the pressing mechanism (13) comprises an installation frame, two positioning blocks (131) which are driven to open and close by an air cylinder are symmetrically arranged on the surface of the installation frame, and a cylindrical through hole is formed in the middle of the combined positioning blocks (131).

5. The integral press-fitting mechanism of the asynchronous motor according to claim 4, characterized in that: the surface of the pressing mechanism (13) is further provided with two limiting blocks (132) corresponding to the positions of the limiting shafts (123), and the limiting blocks (132) are driven by cylinders to translate.

6. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the supporting mechanism (14) comprises an installation plate and a positioning seat (141) arranged in the middle of the installation plate, wherein a circular through hole with the same aperture as that of the through hole in the positioning block (131) is formed in the center of the positioning seat (141).

7. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the locking mechanism (15) comprises clamping blocks (151) fixedly arranged at two ends of the bottom of the pressing mechanism (13) and wedge-shaped assemblies arranged on the surface of the supporting mechanism (14) and corresponding to the clamping blocks (151), through holes are formed in the middles of the clamping blocks (151), each wedge-shaped assembly comprises a locking cylinder (152), a wedge block (154), a spring and a wedge groove (153), and the shape and the volume of each wedge groove (153) are matched with those of the clamping blocks (151).

8. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the positioning mechanism (16) comprises a positioning pin (166), an inner supporting conical shaft (162), an expansion sleeve (163), a fixing seat 164 and a driving cylinder (165) which are coaxially arranged from top to bottom, and the driving cylinder (165) controls the expansion sleeve (163) to be opened and closed.

9. The integral press-fitting mechanism of the asynchronous motor according to claim 1, characterized in that: the lifting mechanism (17) is provided with a driving motor II, a screw rod (172) and a tensioning mechanism, the driving motor II can drive the screw rod (172) to move up and down and drive the positioning mechanism (16) to penetrate to the upper part of the supporting mechanism (14).

10. Asynchronous machine closed assembly system, its characterized in that: comprising an integral press-fit mechanism (12) for an asynchronous machine according to any one of claims 1 to 9.

11. The asynchronous motor stacking system of claim 10, wherein: the asynchronous motor stacking system further comprises a liquid nitrogen cooling mechanism (2) and/or a heating mechanism (3), the liquid nitrogen cooling mechanism (2) is used for cooling the rotor shaft 5, and the heating mechanism (3) is used for heating the rotor iron core (4) and the dynamic balance plate.

12. The asynchronous motor stacking system of claim 11, wherein: liquid nitrogen cooling body (2) is including freezing storehouse (21) that has the material mouth of getting and put (22), be provided with rotor shaft holding area in freezing storehouse (21), be provided with cooling tube (23) around the rotor shaft holding area, the equipartition has gas outlet (231) on the inside wall of cooling tube (23), cooling tube (23) and liquid nitrogen inlet (24) intercommunication are followed gas outlet (231) output gas-liquid two-phase nitrogen gas.

13. The asynchronous motor stacking system of claim 12, wherein: the bottom of the rotor shaft accommodating area is connected with a cam indexer (26), and a driving shaft (261) of the cam indexer (26) penetrates through the axis of the rotor shaft accommodating area and drives the rotor shaft accommodating area to rotate.

14. The asynchronous motor stacking system of claim 13, wherein: the rotor shaft containing area is provided with a plurality of containing grooves (251), each containing groove (251) is internally provided with a fixed seat (164) which is matched with the inner pipe diameter of the rotor shaft (5) and is inserted in the rotor shaft (5), and the material taking and placing port (22) is arranged corresponding to the axis of the fixed seat (164).

15. The asynchronous motor stacking system of claim 14, wherein: the upper end of the material taking and placing opening (22) is correspondingly provided with a movable hand grip (28), the top of the hand grip (28) is provided with a tension mechanism which can be opened and closed, and the tension mechanism can just enter the inside of the rotor shaft (5) through the opening of the rotor shaft (5) in a closed state.

16. The asynchronous motor stacking system of claim 11, wherein: the heating mechanism (3) comprises a medium-frequency heating mechanism, a superaudio heating mechanism and a temperature measuring sensor mechanism, heating coils made of copper pipes are arranged in the medium-frequency heating mechanism and the movable superaudio heating mechanism, and the heating coils are communicated with a water chiller.