A method for simulating the tightening state of a rolling mill stand
A rolling mill stand and fastening technology, which is applied in the direction of metal rolling stand, metal rolling mill stand, metal rolling, etc., can solve the problem of inability to achieve installation accuracy at one time, time-consuming and laborious, and inability to fasten anchor bolts, etc. question
Active Publication Date: 2021-08-10
MCC TIANGONG GROUP
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Problems solved by technology
[0002] The installation and adjustment of the bottom plate of the rolling mill is the adjustment in the state of no rolling mill stand. Only the anchor bolts of the bottom plate can be tightened, and the joint anchor bolts of the bottom plate and the frame cannot be fastened. Therefore, in this state The bottom plate of the rolling mill is adjusted downwards, and the final installation accuracy cannot be achieved at one time
After the rolling mill stand is installed on the bottom plate, the elevation and level of the bottom plate are likely to change, which requires readjustment of the bottom plate. At this time, the rolling mill stand is already in place, and it is very difficult to adjust the bottom plate. time consuming and laborious
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[0021] Such as figure 1 , 4 , Shown in 5: a method for simulating the fastening state of a rolling mill stand, comprising the following steps:
[0022] (1) if figure 2 , 3 The simulated fastening device is made as shown: the device includes upper and lower support surfaces 9, support sleeves 10 and support ribs 11, the support sleeve is installed in the center between the upper and lower support surfaces, and the support ribs are along the support sleeve The outer circumference is evenly arranged, and the two adjacent support ribs are distributed in an "X" shape;
[0023] The upper and lower support surfaces are used to support the bottom plate to be fastened and the nuts for fastening the anchor bolts connected to the frame, and are respectively composed of steel plates with a thickness of not less than 20mm. The area size of the upper and lower support surfaces is equal to the contact area with the bottom plate when the rolling mill stand is in place, which not only sat...
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Abstract
A method for simulating the fastening state of a rolling mill stand, comprising the following steps: 1. Making a simulated fastening device: the device includes upper and lower support surfaces, support sleeves and support ribs; 2. The support of the simulated fastening device The bushing is set on the anchor bolts connecting the bottom plate and the rack, and the nuts are screwed into the upper support surface of the simulated fastening device; 3. Measure the accuracy indicators of the elevation and levelness of the bottom plate of the rolling mill, and pass the foundation pad Tighten the anchor bolts on the iron and the bottom plate to adjust the bottom plate of the rolling mill; 4. Tighten all the anchor bolts to the specified torque; 5. Remove the simulated fastening device and install the rolling mill stand. The present invention pre-tightens the base plate and the rack in advance to fasten the anchor bolts, simulates the stress state of the base plate after the rolling mill rack is in place, and adjusts the rolling mill base plate in this state, which can ensure that the rolling mill base plate is in place in the rolling mill rack The final elevation and level will not change to achieve the final adjustment accuracy, saving time and effort.
Description
Technical field: [0001] The invention belongs to a method for installing mechanical equipment, and in particular relates to a method for simulating the fastening state of a rolling mill frame, which is suitable for fastening anchor bolts when installing and adjusting bottom plates of single rolling mills and continuous rolling mills. Background technique: [0002] The installation and adjustment of the bottom plate of the rolling mill is the adjustment in the state of no rolling mill stand. Only the anchor bolts of the bottom plate can be tightened, and the joint anchor bolts of the bottom plate and the frame cannot be fastened. Therefore, in this state Adjusting the bottom plate of the rolling mill downwards cannot achieve the final installation accuracy at one time. After the rolling mill stand is installed on the bottom plate, the elevation and level of the bottom plate are likely to change, which requires readjustment of the bottom plate. At this time, the rolling mill s...
Claims
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IPC IPC(8): B21B31/06
Inventor 杜艳军
Owner MCC TIANGONG GROUP