CN215267945U - Roughing mill motor rotor anti-channeling auxiliary device - Google Patents
Roughing mill motor rotor anti-channeling auxiliary device Download PDFInfo
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- CN215267945U CN215267945U CN202121122869.5U CN202121122869U CN215267945U CN 215267945 U CN215267945 U CN 215267945U CN 202121122869 U CN202121122869 U CN 202121122869U CN 215267945 U CN215267945 U CN 215267945U
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- motor rotor
- mandrel
- roughing mill
- fixing frame
- auxiliary device
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Abstract
An anti-channeling auxiliary device for a motor rotor of a roughing mill is arranged at the outer side end of the motor rotor of the roughing mill and comprises the motor rotor, a tile seat, a tile cover, a mandrel, a bearing assembly, a support and a fixing frame, wherein the support is connected with the bearing assembly and is fixed with the fixing frame, and the fixing frame is fixed at the position where the tile cover and the tile seat are combined; the bearing assembly comprises a thrust bearing, end covers, an outer sleeve, an inner sleeve and a spring assembly, wherein the mandrel is of a hollow structure, the inner side end of the mandrel is fixedly connected with the motor rotor, the inner sleeve is sleeved on the mandrel, the pair of thrust bearings are assembled on the inner sleeve, the two end covers are symmetrically arranged at two ends of the pair of thrust bearings, the outer sleeve is sleeved on the outer side of the thrust bearing, the end covers are fixedly connected with the outer sleeve through screws, step holes are uniformly distributed in each end cover, and the spring assembly is arranged in each step hole. The utility model discloses can draw transmission shaft and electric motor rotor under the empty load state to the intermediate position, effectively eliminate the friction phenomenon of generating heat, guarantee the normal operating of roughing mill.
Description
Technical Field
The utility model relates to a rolling mill auxiliary device, especially roughing mill electric motor rotor prevents scurrying auxiliary device.
Background
The roughing mill is the necessary equipment for steel rolling, the roughing mill is contacted with the strip steel in the rolling process, the upper working roll and the lower working roll, and because the rolling force is too strong, two motors are mostly adopted to respectively drag one working roll, and the motors are directly connected with the working rolls through transmission shafts to rotate. However, a certain axial force is inevitably generated during the work of any one working roller, the axial force generated by the working roller is directly transmitted to the motor, once the working roller runs under load, the working roller and the transmission shaft are locked into a whole by huge torque, and the motor axially moves along with the working roller. Although the axial force generated by the working roll is very large, the shifting amount is very small, because the working roll bearing seat is supported in the rolling mill by thousands of tons of rolling force at the moment when the working roll starts to bite steel, the shifting range of the working roll is limited within the clearance range of the thrust bearing of the working roll at the moment, the clearance of the thrust bearing of the working roll is generally between 0.5mm and 0.7mm, and the limit range cannot exceed 1 mm. The axial thrust device of the main drive motor generally can be on the back tile seat, the rear end shaft diameter of the motor rotor (motor shaft) is an axial constraint structure (a clamping groove structure), the clamping groove is located on the tile seat behind the motor, the tile seat is an upper half structure and a lower half structure, namely, the lower tile seat and the upper tile cover are combined into a whole tile seat, the motor rotor is radially constrained by the tile seat and the tile cover in a static pressure bearing mode, the axial constraint of the motor rotor is dynamic pressure bearing friction, namely thrust pads sliding friction, the thrust pads are respectively fixed on two sides of the tile cover and a tailstock, the axial displacement of the rotor in the tile seat is about 3mm-4mm, namely, the width of the clamping groove of the motor rotor is greater than 3mm-4mm of the tile seat and the width of the thrust pads. Therefore, the play amount of the motor rotor is larger than that of the working roll, the axial play of the working roll during steel rolling is borne by the working roll thrust bearing, but the motor rotor is required to be in a middle position when the motor rotor is in a no-load state. The working roll thrust bearing is a tapered roller bearing, and during empty load, the working roll thrust bearing can be easily stopped at the middle position under the action of gravity of the roll body, but the motor rotor is difficult to stop at the middle position, namely, a shoulder on one side of the rotor clamping groove is in contact friction with a corresponding thrust plate, if the axial force generated by steel rolling at the moment is in the same direction with the shoulder contact thrust plate, even if the axial force is small in movement amount, the strong axial force of the working roll can be transferred to the thrust bearing and the bearing seat to bear. Because the axial restraining force of the motor thrust shoe is only used for restraining the axial movement of the motor and cannot bear the strong axial force generated by the working roller, when the axial force generated by the roller is transferred to the motor thrust shoe to bear, the motor thrust shoe is difficult to bear, the motor rotor and the thrust plate are heated quickly, and the abrasion is intensified. Seriously affecting the normal operation of the roughing mill.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve prior art's problem, provide one kind and can stop electric motor rotor in the intermediate position when empty load, avoid preventing scurrying auxiliary device with the roughing mill electric motor rotor that the operation generates heat.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an anti-channeling auxiliary device for a motor rotor of a roughing mill is arranged at the outer side end of the motor rotor of the roughing mill and comprises the motor rotor, a tile seat, a tile cover, a mandrel, a bearing assembly, a support and a fixing frame, wherein the support is connected with the bearing assembly and is fixed with the fixing frame, and the fixing frame is fixed at the position where the tile cover and the tile seat are combined; the bearing assembly comprises a thrust bearing, end covers, an outer sleeve, an inner sleeve and a spring assembly, wherein the mandrel is of a hollow structure, the inner side end of the mandrel is fixedly connected with the motor rotor, the inner sleeve is sleeved on the mandrel, the pair of thrust bearings are assembled on the inner sleeve, the two end covers are symmetrically arranged at two ends of the pair of thrust bearings, the outer sleeve is sleeved on the outer side of the thrust bearing, the end covers are fixedly connected with the outer sleeve through screws, step holes are uniformly distributed in each end cover, and the spring assembly is arranged in each step hole.
Above-mentioned roughing mill electric motor rotor prevents scurrying auxiliary device, spring assembly includes spring dabber, monolithic belleville spring, biplate belleville spring, and monolithic belleville spring, biplate belleville spring suit are on spring dabber jointly, and wherein monolithic belleville spring is located one side of spring dabber, and biplate belleville spring is located the opposite side of spring dabber.
In the roughing mill motor rotor anti-channeling auxiliary device, the middle section of the mandrel is provided with a bearing installation position, the inner sleeve is assembled at the bearing installation position, and a flat key is arranged between the inner sleeve and the bearing installation position; the mandrel is also provided with a spacer ring, one end of the spacer ring is in contact with the inner sleeve, the other end of the spacer ring is fixed by a lock nut, and the lock nut is in threaded fit with the mandrel.
Above-mentioned roughing mill electric motor rotor prevents scurrying auxiliary device, the one end that the dabber is close to electric motor rotor is equipped with the mounting disc, mounting disc and electric motor rotor bolted connection, and the mounting disc middle part is equipped with the positioning disk, positioning disk and the cooperation suit of the location blind hole shaft hole that electric motor rotor tip set up.
The roughing mill motor rotor anti-channeling auxiliary device is characterized in that the two supports are symmetrically arranged, one end of each support is welded with the outer sleeve, and the other end of each support is fixed with the fixing frame through the support fixing jackscrew.
In the roughing mill motor rotor anti-channeling auxiliary device, the two ends of the fixing frame are respectively provided with the fixing frame adjusting jackscrew, and the fixing frame is fixed with the tile cover and the tile seat box closing part through the fixing frame adjusting jackscrew.
In the roughing mill motor rotor anti-channeling auxiliary device, a sealing ring is arranged between an end cover close to the motor rotor and the mandrel; and a sealing ring is arranged between the end cover far away from the motor rotor and the spacer ring.
In the roughing mill motor rotor anti-channeling auxiliary device, the outer side end of the mandrel is provided with the mandrel end cover, and the mandrel end cover is welded with the mandrel.
The utility model discloses the problem to solving roughing mill electric motor rotor and thrust piece and generating heat is improved, has add one set at electric motor rotor's spindle nose position and has prevented scurrying auxiliary device, the device can be drawn transmission shaft and electric motor rotor to the intermediate position under the empty load state, like this when motor and transmission shaft produce certain volume of scurrying under the load state, the biplate or the multi-disc dish spring of device atress side are compressed, and the monolithic dish spring of not atress side will bounce, and electric motor rotor takes place less scurrying volume at the tile seat intermediate position, avoids making electric motor rotor draw-in groove one side circular bead and the thrust piece contact friction that corresponds because of the volume of scurrying is partial to one side to effectively eliminate the friction heating phenomenon, guarantee roughing mill's normal operating.
Drawings
Fig. 1 is a schematic view of the present invention;
FIG. 2 is a view in the direction A of FIG. 1;
FIG. 3 is a partial enlarged view (rotated) at B in FIG. 2;
fig. 4 is a schematic view of a mount.
The list of labels in the figure is: 1. the bearing comprises a bush cover, 2, a bush seat, 3, a support, 4, a fixing frame, 4-1, a support fixing jackscrew, 4-2, a fixing frame adjusting jackscrew, 5, a motor rotor, 6, a mandrel, 7, a mounting disc, 8, a positioning disc, 9, an outer sleeve, 10, a thrust bearing, 11, an inner sleeve, 12, a flat key, 13, a spacer ring, 14, a locking nut, 15, a sealing ring, 16, a spring mandrel, 17, a disc spring, 18, an end cover, 19 and a mandrel end cover.
Detailed Description
Referring to fig. 1-3, the device of the present invention is installed at the spindle head of the roughing mill electric motor rotor, and the transmission shaft and the roughing mill electric motor rotor under the empty load state are pulled to the middle position by the device. The device is arranged at the outer side end of a motor rotor of a roughing mill and comprises a motor rotor 5, a tile seat 2, a tile cover 1, a mandrel 6, a bearing assembly, a support 3 and a fixing frame 4. The support is connected with a bearing assembly, the support is fixed by a fixing frame, and the fixing frame is fixed at the position where the tile cover and the tile seat close the box. The bearing assembly comprises a pair of thrust bearings 10 mounted back-to-back, an end cap 18, an outer sleeve 9, an inner sleeve 11 and a spring assembly. The mandrel 6 is of a hollow structure, a mounting disc 7 is welded at the inner side end (the left end in fig. 3) of the mandrel, the mounting disc is fixedly connected with the motor rotor 5 through bolts, a positioning disc 8 is arranged in the middle of the mounting disc, the positioning disc is used for positioning the mounting position of the mandrel, and the positioning disc is matched with a positioning blind hole shaft hole formed in the end part of the motor rotor.
Referring to fig. 3, a bearing installation position is arranged at the middle section of the mandrel, an inner sleeve 11 is sleeved at the bearing installation position, a pair of thrust bearings 10 are assembled on the inner sleeve, and a boss at the middle part of the inner sleeve separates the two thrust bearings. A flat key 12 for circumferential limit is arranged between the inner sleeve and the bearing installation position. The outer sleeve 9 is sleeved on the outer side of the thrust bearing and is welded with the support. Two end covers 18 are symmetrically arranged at the end parts of the two thrust bearings, the end covers are fixedly connected with the outer sleeve through screws, a plurality of step holes are uniformly distributed on each end cover, and a spring assembly is arranged in each step hole. The spring assembly comprises a spring mandrel 16 and a disc spring 17, the disc spring is sleeved on the spring mandrel and comprises a plurality of single disc springs and a plurality of double disc springs, wherein the plurality of single disc springs are arranged on one side of the mandrel, and the plurality of double disc springs are arranged on the other side of the mandrel. The single disc shape reaches a flat state through pre-tightening in an assembly state, and the movement anti-loosening effect is achieved; the double disc spring has a certain amount of contraction to pull the motor rotor to the middle position of the shoe. A spacer ring 13 is arranged at the end of the mandrel close to the right side, one end of the spacer ring is in contact with the end face of the inner sleeve, the other end of the spacer ring is fixed by a lock nut 14, and the lock nut is in threaded fit with the mandrel. The outer side end (right end) of the mandrel is provided with a mandrel end cover 19, and the mandrel end cover is welded with the mandrel. A sealing ring 15 is arranged between the end cover close to the motor rotor and the mandrel; and a sealing ring is arranged between the end cover far away from the motor rotor and the spacer ring.
Referring to fig. 1, 2 and 4, two sides of the fixing frame are respectively provided with a fixing frame adjusting jackscrew 4-2, the fixing frame adjusting jackscrew can be rotated to adjust the axial position of the device, the fixing frame adjusting jackscrew is screwed, and the fixing frame is fixed at the position where the tile cover and the tile seat are combined. The fixing frame is provided with a bracket mounting position, the bracket mounting position is provided with a bracket fixing jackscrew 4-1, and one end of the bracket is fixed with the fixing frame through the bracket fixing jackscrew.
The utility model discloses the theory of operation as follows: under the condition of no load, the transmission shaft and the roughing mill motor rotor can be pulled to the middle position under the action of the device spring assembly, when the roughing mill motor and the transmission shaft generate small channeling quantity under the load condition, the double-disc spring on the stressed side is compressed, the single-disc spring on the unstressed side bounces, and the thrust bearing is still kept to be pre-compressed to a certain degree. The axial displacement of the working roll is not more than 1mm in the working process of the roughing mill, the displacement of the motor rotor is about 4mm, and the phenomenon that the thrust plate is contacted with the bearing bush to generate heat due to the fact that the motor rotor is not in the middle position is avoided because the motor rotor is in the middle position of the bearing bush in an empty load state. The field use shows that after the device is installed, the rough rolling mill runs for a long time without the heating phenomenon of the bearing bush.
Claims (8)
1. The utility model provides a roughing mill motor rotor prevents scurrying auxiliary device which characterized in that: the device is arranged at the outer side end of a motor rotor of a roughing mill and comprises the motor rotor, a tile seat, a tile cover, a mandrel, a bearing assembly, a support and a fixing frame, wherein the support is connected with the bearing assembly, the support is fixed with the fixing frame, and the fixing frame is fixed at the position where the tile cover and the tile seat are combined; the bearing assembly comprises a thrust bearing, end covers, an outer sleeve, an inner sleeve and a spring assembly, wherein the mandrel is of a hollow structure, the inner side end of the mandrel is fixedly connected with the motor rotor, the inner sleeve is sleeved on the mandrel, the pair of thrust bearings are assembled on the inner sleeve, the two end covers are symmetrically arranged at two ends of the pair of thrust bearings, the outer sleeve is sleeved on the outer side of the thrust bearing, the end covers are fixedly connected with the outer sleeve through screws, step holes are uniformly distributed in each end cover, and the spring assembly is arranged in each step hole.
2. The roughing mill motor rotor anti-channeling auxiliary device of claim 1, wherein: the spring assembly comprises a spring mandrel, a single disc spring and double disc springs, the single disc spring and the double disc springs are sleeved on the spring mandrel together, the single disc spring is located on one side of the spring mandrel, and the double disc springs are located on the other side of the spring mandrel.
3. The roughing mill motor rotor anti-channeling auxiliary device of claim 2, wherein: a bearing installation position is arranged at the middle section of the mandrel, the inner sleeve is assembled at the bearing installation position, and a flat key is arranged between the inner sleeve and the bearing installation position; the mandrel is also provided with a spacer ring, one end of the spacer ring is in contact with the inner sleeve, the other end of the spacer ring is fixed by a lock nut, and the lock nut is in threaded fit with the mandrel.
4. The roughing mill motor rotor anti-channeling auxiliary device of claim 3, wherein: the one end that the dabber is close to electric motor rotor is equipped with the mounting disc, mounting disc and electric motor rotor bolted connection, and the mounting disc middle part is equipped with the positioning disk, and the positioning disk cooperates with the location blind hole shaft hole that electric motor rotor tip set up.
5. The roughing mill motor rotor anti-channeling auxiliary device of claim 4, wherein: the two supports are symmetrically arranged, one end of each support is welded with the outer sleeve, and the other end of each support is fixed with the fixing frame through the support fixing jackscrew.
6. The roughing mill motor rotor anti-channeling auxiliary device of claim 5, wherein: the two ends of the fixing frame are respectively provided with a fixing frame adjusting jackscrew, and the fixing frame is fixed with the tile cover and the tile seat box-closing part through the fixing frame adjusting jackscrew.
7. The roughing mill motor rotor anti-channeling auxiliary device of claim 6, wherein: a sealing ring is arranged between the end cover close to the motor rotor and the mandrel; and a sealing ring is arranged between the end cover far away from the motor rotor and the spacer ring.
8. The roughing mill motor rotor anti-channeling auxiliary device of claim 7, wherein: the outer side end of the mandrel is provided with a mandrel end cover, and the mandrel end cover is welded with the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122869.5U CN215267945U (en) | 2021-05-24 | 2021-05-24 | Roughing mill motor rotor anti-channeling auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122869.5U CN215267945U (en) | 2021-05-24 | 2021-05-24 | Roughing mill motor rotor anti-channeling auxiliary device |
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| Publication Number | Publication Date |
|---|---|
| CN215267945U true CN215267945U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121122869.5U Active CN215267945U (en) | 2021-05-24 | 2021-05-24 | Roughing mill motor rotor anti-channeling auxiliary device |
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| CN (1) | CN215267945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649892A (en) * | 2022-05-23 | 2022-06-21 | 山西省机电设计研究院有限公司 | Motor with auxiliary device is dismantled to bearing |
-
2021
- 2021-05-24 CN CN202121122869.5U patent/CN215267945U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649892A (en) * | 2022-05-23 | 2022-06-21 | 山西省机电设计研究院有限公司 | Motor with auxiliary device is dismantled to bearing |
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