CN113638438A - Installation method of roller type vertical mill support base - Google Patents
Installation method of roller type vertical mill support base Download PDFInfo
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- CN113638438A CN113638438A CN202110934116.2A CN202110934116A CN113638438A CN 113638438 A CN113638438 A CN 113638438A CN 202110934116 A CN202110934116 A CN 202110934116A CN 113638438 A CN113638438 A CN 113638438A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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Abstract
A method for mounting a bracket base of a roller type vertical mill comprises the following steps: s1, forming a concrete foundation; s2, placing a sizing block on each concrete foundation; s3, drawing a main central line, placing peripheral bracket bases, marking the central point of the central bracket base as O, marking the central points of the four peripheral bracket bases as A, B, C, D, marking A1, A2, B1, B2, C1, C2, D1 and D2; s4, adjusting the position of the bracket base: s41, adjusting the height of the bracket base; s42, adjusting the positions of the four peripheral rack bases and the central rack base to ensure AB = BC = CD = DA, OA = OB = OC = OD; s43, respectively rotating each peripheral bracket base by using A, B, C, D as a center until the numerical deviation of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2 is less than +/-1 mm; and S5, grouting and fixing the bracket base. Through adjusting the interval between each mark point to the mounted position of quick and accurate positioning support base has promoted installation effectiveness and accuracy.
Description
Technical Field
The application relates to the field of cement vertical mills, in particular to a mounting method of a support base of a roller type vertical mill.
Background
In the installation process of the roller type vertical mill, firstly, a foundation is poured and formed, then the support base is installed and adjusted, the levelness, the height difference and the placement position of the support base are ensured to be in a proper range, and then all components of the roller type vertical mill are installed, so that the integral installation precision of the roller type vertical mill is ensured.
The support base of the roller type vertical mill is generally four peripheral support bases and a central support base, and the support bases and the installation foundation are fixedly connected through foundation bolts. In the process of installing and adjusting the positions of the bracket bases, the levelness and the height difference of the four peripheral bracket bases and the central bracket base are easy to measure and adjust, but the relative positions of the four peripheral bracket bases and the central bracket base are difficult to accurately position, so that the installation period is long, and if the relative positions of the four peripheral bracket bases and the central bracket base are inaccurate, the installation position of the vertical mill is influenced. Therefore, there is a need for an installation method capable of quickly and accurately determining the positions of the four peripheral support bases and the central support base of the roller mill.
Disclosure of Invention
In order to solve the problem that the relative position of a support base is difficult to position quickly, the application aims to provide an installation method of the support base of the roller type vertical mill.
The application provides a mounting method of roller type vertical mill support base, adopts following technical scheme:
a method for mounting a bracket base of a roller type vertical mill comprises the following steps:
s1, respectively forming concrete foundations at the installation positions of the four peripheral support bases, and forming concrete foundations at the installation positions of the central support base;
s2, placing a sizing block on each concrete foundation, wherein the lower surface of the sizing block is closely contacted with the concrete foundation, and the horizontal deviation of the upper surface of the sizing block is less than or equal to 0.1 mm/m;
s3, drawing a main central line according to design requirements, then placing peripheral bracket bases on four peripheral concrete foundations, placing a central bracket base on the middle concrete foundation, marking a central point of the central bracket base as O, the center O being located on the main central line, marking central points of the four peripheral bracket bases as a, B, C, D, respectively, marking two sides of the four points a, B, C, D with a1, a2, B1, B2, C1, C2, D1, D2, respectively, along the length direction of each peripheral bracket base, and AA1= AA2= 1= BB2= CC1= CC2= DD1= DD 2;
s4, adjusting the peripheral bracket base and the central bracket base, which comprises the following contents:
s41, adjusting the heights of the peripheral bracket base and the central bracket base to ensure that the height difference between the peripheral bracket base and the central bracket base is less than 1mm, and simultaneously, the levelness deviation of each bracket base is less than 0.1 mm/m;
s42, measuring distances of AB, BC, CD and DA and distances of OA, OB, OC and OD, and adjusting the positions of the four peripheral bracket bases and the central bracket base until the numerical deviation of the AB, BC, CD and DA is less than +/-1 mm, and the numerical deviation of the OA, OB, OC and OD is less than +/-1 mm;
s43, measuring distances of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2, and respectively rotating all the peripheral bracket bases by taking A, B, C, D as a center until numerical deviations of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2 are smaller than +/-1 mm;
and S5, grouting and fixing the bracket base.
Through adopting above-mentioned technical scheme, in step S4, mark each support base, through measuring the interval between each mark point to the mounted position of each support base is just pinpointed fast, has reached the effect that promotes installation effectiveness and accuracy.
Preferably, in step S2, the following is included:
s21, paving cement mortar on the upper surface of the concrete foundation;
and S22, placing a sizing block above the cement mortar, and knocking the sizing block to adjust the levelness of the sizing block.
Through adopting above-mentioned technical scheme, after laying cement mortar on concrete foundation, can promote the stability that the parallels were placed, the levelness of the adjustment parallels of also being convenient for simultaneously to after cement mortar solidifies, the positional stability of parallels is also higher.
Preferably, before step S21, the upper surface of the concrete foundation is roughened or hemmed, and then cleaned.
Through adopting above-mentioned technical scheme, can promote the firm degree that cement mortar and concrete foundation upper surface combine.
Preferably, the sizing block comprises a fixed sizing block and an adjustable sizing block, the fixed sizing block is laid above the cement mortar, the adjustable sizing block is two wedge-shaped blocks which are mutually attached, and the adjustable sizing block is placed above the fixed sizing block.
Through adopting above-mentioned technical scheme, fixed parallels are used for adjusting the levelness, and adjustable parallels then can adjust the height of support base, are convenient for ensure that the difference in height of support base is in reasonable within range.
Preferably, in step S3, the marker posts are disposed at points A, B, C, D, A1, a2, B1, B2, C1, C2, D1, and D2, and the marker post at point A, B, C, D can penetrate through the bracket base.
Through adopting above-mentioned technical scheme, at the measuring in-process, can reduce measuring degree of difficulty through the sighting rod, simultaneously in the adjustment process of step S43, can be with the sighting rod lower extreme butt concrete foundation' S of A, B, C, D department upper surface, later around the sighting rod runing rest base of A, B, C, D department, can reduce the possibility that point A, B, C, D produced the removal relative concrete foundation, reduce the adjustment degree of difficulty.
Preferably, in step S5, the method includes the following steps:
s51, fixing the foundation bolts on the base of the support, positioning the lower ends of the foundation bolts in the reserved holes of the concrete foundation, pouring concrete into the reserved holes for primary grouting, and curing after vibrating compaction until the concrete is hardened;
and S52, supporting a formwork above the concrete foundation, performing secondary grouting on the space between the support base and the concrete foundation, and curing after vibrating compaction until the concrete is hardened.
Through adopting above-mentioned technical scheme, primary grouting is used for fixing rag bolt, guarantees rag bolt's positional stability, later uses rag bolt as the benchmark again, utilizes rag bolt to connect the support base in the top on concrete foundation, later carries out secondary grout again to guarantee the stability of support base position, avoid carrying out the possibility of support base position adjustment again after the completion of being in the milk.
Preferably, before the step S52 is performed, the step S4 is repeated to secondarily correct the position parameters of the respective stand bases.
Through adopting above-mentioned technical scheme, promote accurate nature and the fastness of support base mounted position.
Preferably, after repeating step S4, the four peripheral bracket bases are welded using the reinforcing bars.
Through adopting above-mentioned technical scheme, reduce four peripheral support bases and take place the possibility of position change.
In summary, the present application has the following technical effects:
1. the marking points are determined on the support bases, and the distance between every two marking points is measured and adjusted, so that the effect of quickly and accurately positioning every support base is achieved;
2. through the mode that adopts the secondary grout, reached the effect that promotes the accuracy and the firmness of grout after-poppet base position.
Drawings
FIG. 1 is a schematic diagram of the positions of the base of the stand and the marks in this embodiment.
Fig. 2 is a schematic structural view of the sizing block in the present embodiment.
Description of reference numerals: 1. a peripheral frame base; 2. a central support base; 3. fixing a sizing block; 4. an adjustable sizing block; 41. an upper sizing block; 42. and (5) a lower sizing block.
Detailed Description
The embodiment introduces an installation method of a roller type vertical mill support base, which comprises the following steps.
And S1, forming a concrete foundation.
As shown in fig. 1, the support base of the roller mill includes four peripheral support bases 1 and a central support base 2, correspondingly, according to the requirements of the drawing, concrete foundations are cast and formed at the approximate placement positions of the peripheral support bases 1 and the central support base 2, the height of the concrete foundations is approximately equal, and the next operation is performed after the concrete foundations are cured and hardened.
And S2, placing a sizing block above the concrete foundation.
As shown in fig. 2, the sizing block comprises a fixed sizing block 3 and an adjustable sizing block 4, the fixed sizing block 3 is placed above the concrete foundation, the adjustable sizing block 4 is placed above the fixed sizing block 3, and the bracket base is placed above the adjustable sizing block 4. Adjustable parallels 4 includes parallels 41 and lower parallels 42 of upper padding iron, the upper surface of upper padding iron 41 and lower padding iron 42 lower surface parallel arrangement, the lower surface of upper padding iron 41 and the upper surface of upper padding iron 42 are the wedge face of laminating mutually, with this upper padding iron 41 and lower padding iron 42 form the wedge block structure, through the relative position of adjusting upper padding iron 41 and lower padding iron 42, can adjust the whole height after 41 and the cooperation of lower padding iron 42, thereby reach the purpose of adjusting the support base height.
The surfaces of the fixed and adjustable sizing blocks 3, 4 should be burr-free and the surfaces must be flat and defect-free.
The concrete steps of placing the sizing block are as follows:
s21, firstly, roughening or shoveling the upper surface of the concrete foundation, then washing and cleaning the upper surface of the concrete foundation, and then paving cement mortar on the upper surface of the concrete foundation. The thickness of the cement mortar laid on each concrete foundation should be approximately equivalent
S22, paving the fixed sizing block 3 above cement mortar, ensuring that the lower part of the fixed sizing block 3 is tightly attached to the cement mortar, and then adjusting the levelness of the upper surface of the fixed sizing block 3 by beating the fixed sizing block 3, and ensuring that the levelness is less than or equal to 0.1 mm/m.
After the cement mortar is cured and hardened, the next step is carried out.
And S3, as shown in figure 1, drawing a main central line according to the design requirements of the equipment, wherein the main central line is the axial direction of the driving motor, the peripheral support bases 1 are placed on four peripheral concrete bases, the central support base 2 is placed on the middle concrete base, and the peripheral support bases 1 and the central support base 2 are both placed above the adjustable sizing blocks 4. The center point of the central stent base 2 is marked as O, the center O is located on the main centerline, the center points of the four peripheral stent bases are marked as a, B, C, D, respectively, both sides of the four points a, B, C, D are marked as a1, a2, B1, B2, C1, C2, D1, D2, respectively, along the length direction (i.e., the centerline direction) of each peripheral stent base, and AA1= AA2= BB1= BB2= CC1= CC2= DD1= DD 2.
And S4, adjusting the positions of the peripheral bracket base 1 and the central bracket base 2, and the concrete steps are as follows.
And S41, adjusting the height and levelness of the peripheral bracket base 1 and the central bracket base 2. The height of each bracket base is adjusted by adjusting the adjustable sizing block 4 below each bracket base, so that the height difference between each bracket base is smaller than or equal to 1 mm. The levelness of the bracket base is adjusted by adding a gasket between the bracket base and the adjustable sizing block 4, so that the levelness of the bracket base is ensured to be less than or equal to 0.1 mm/m.
And S42, measuring distances of AB, BC, CD and DA and distances of OA, OB, OC and OD, and adjusting the positions of the four peripheral bracket bases and the central bracket base until the numerical deviation of the AB, BC, CD and DA is less than +/-1 mm, and the numerical deviation of the OA, OB, OC and OD is less than +/-1 mm.
S43, measuring distances of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2, and rotating the peripheral bracket bases respectively by taking A, B, C, D as a center until numerical deviations of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2 are less than +/-1 mm.
In step S4, when the position of the center stand base 2 is determined, a circle is drawn around the point O and the OA length at the time of design as a radius to ensure that the circular line passes through the four peripheral concrete foundations and substantially passes through the center of the concrete foundation. And then, placing one of the peripheral bracket bases 1 on the peripheral concrete foundation, and taking the peripheral bracket base 1 with the center marked A as an example, ensuring that the point A is on a marked circle line, rotating the peripheral bracket base 1 to enable the point A1-A2 to be approximately perpendicular to the point OA, and observing whether the positions of anchor bolts connected to the peripheral bracket base 1 can be positioned in the reserved holes of the concrete foundation. And if not, continuing to adjust the position of the point A until the anchor bolt can be approximately positioned in the reserved hole of the concrete foundation, and recording the initial position of the point A.
If the position of the point A is changed for many times, the foundation bolt still cannot be ensured to be positioned in the reserved hole of the concrete foundation, and the position of the point O needs to be determined again. The position of the point O can be estimated from the approximate position of the anchor bolt with respect to the prepared hole.
Then, according to the initial position of the point A, based on the line where the OA is located, the A is used as a starting point, the A is used as an included angle of 45 degrees with the OA, the lines AB and AD are drawn, the B and D are intersection points of the drawn line and the circular line, the B is used as the starting point, the line perpendicular to the AB is drawn, the intersection point of the drawn line and the circular line is a point C, the initial position of the point A, B, C, D is determined preliminarily, and the adjusting time is further saved. Then, steps S42 and S43 are performed, and only a small adjustment is required.
The points A, B, C, D, A1, A2, B1, B2, C1, C2, D1 and D2 are all provided with a marker post, and the marker post at the point A, B, C, D can penetrate through the bracket base. Thus, when the measuring instrument is placed at the position O, the distances from the points O to A, B, C, D, A1, A2, B1, B2, C1, C2, D1 and D2 can be conveniently calibrated, and the distances from AB, BC, CD and DA can be conveniently measured. Meanwhile, in step S43, since the marker post at the point A, B, C, D can penetrate through the bracket base, the marker post at the point A, B, C or D is pressed downward to abut against the concrete foundation, and then the bracket base is rotated with the marker post at the point A, B, C or D as the center of circle, so that the possibility of movement of the center point of the bracket base can be reduced, and the difficulty of adjustment can be reduced.
And S5, grouting and fixing the peripheral bracket base 1 and the central bracket base 2, and specifically, the steps are as follows.
S51, fixing or lapping the foundation bolt on the base of the bracket, grouting the preformed hole of the concrete foundation for the first time, and carrying out the next step after the concrete is cured and hardened.
The lower end of each foundation bolt is positioned in a reserved hole of the concrete foundation, and the leakage size (namely the height exceeding the bottom plate of the support base) of each foundation bolt is larger than the sum of the thickness of the bottom plate, the thickness of the gasket and the thickness of the double nut by more than 10 mm.
And S52, supporting a formwork above the concrete foundation, performing secondary grouting on the space between the support base and the concrete foundation, and curing after vibrating compaction until the concrete is hardened. Before grouting, the steps S41-S43 need to be repeated again to ensure that the position of the bracket base meets the design requirements, then the nuts of the foundation bolts are screwed down to ensure that the bracket base is firmly fixed with the concrete foundation, and then secondary grouting is carried out. The aim of operation is that after the secondary grouting, the position of the support base is difficult to readjust, and the recalibration ensures the accuracy of the position of the support base, and simultaneously improves the degree of the firmness of connection of the support base and the concrete foundation.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A method for mounting a support base of a roller type vertical mill is characterized by comprising the following steps:
s1, respectively forming concrete foundations at the installation positions of the four peripheral support bases, and forming concrete foundations at the installation positions of the central support base;
s2, placing a sizing block on each concrete foundation, wherein the lower surface of the sizing block is closely contacted with the concrete foundation, and the horizontal deviation of the upper surface of the sizing block is less than or equal to 0.1 mm/m;
s3, drawing a main central line according to design requirements, then placing peripheral bracket bases on four peripheral concrete foundations, placing a central bracket base on the middle concrete foundation, marking a central point of the central bracket base as O, the center O being located on the main central line, marking central points of the four peripheral bracket bases as a, B, C, D, respectively, marking two sides of the four points a, B, C, D with a1, a2, B1, B2, C1, C2, D1, D2, respectively, along the length direction of each peripheral bracket base, and AA1= AA2= 1= BB2= CC1= CC2= DD1= DD 2;
s4, adjusting the peripheral bracket base and the central bracket base, which comprises the following contents:
s41, adjusting the heights of the peripheral bracket base and the central bracket base to ensure that the height difference between the peripheral bracket base and the central bracket base is less than 1mm, and simultaneously, the levelness deviation of each bracket base is less than 0.1 mm/m;
s42, measuring distances of AB, BC, CD and DA and distances of OA, OB, OC and OD, and adjusting the positions of the four peripheral bracket bases and the central bracket base until the numerical deviation of the AB, BC, CD and DA is less than +/-1 mm, and the numerical deviation of the OA, OB, OC and OD is less than +/-1 mm;
s43, measuring distances of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2, and respectively rotating all the peripheral bracket bases by taking A, B, C, D as a center until numerical deviations of OA1, OA2, OB1, OB2, OC1, OC2, OD1 and OD2 are smaller than +/-1 mm;
and S5, grouting and fixing the bracket base.
2. A method of installing a stand mill stand base of a roller mill according to claim 1, wherein in step S2, the following is included:
s21, paving cement mortar on the upper surface of the concrete foundation;
and S22, placing a sizing block above the cement mortar, and knocking the sizing block to adjust the levelness of the sizing block.
3. A method of installing a stand base of a vertical roller mill according to claim 2, wherein before step S21, the upper surface of the concrete foundation is roughened or hemmed, and then the upper surface of the concrete foundation is cleaned.
4. A method for installing a stand base of a roller mill according to claim 2, wherein the sizing blocks include a fixed sizing block and an adjustable sizing block, the fixed sizing block is laid on top of the cement mortar, the adjustable sizing block is two wedge-shaped blocks attached to each other, and the adjustable sizing block is placed on top of the fixed sizing block.
5. A method of installing a stand mill stand base of a roller mill according to claim 1, wherein in step S3, the points A, B, C, D, A1, A2, B1, B2, C1, C2, D1, D2 are all provided with a post, the post at point A, B, C, D being capable of penetrating the stand base.
6. A method of mounting a stand base of a vertical roller mill according to any one of claims 1 to 5, wherein the step S5 includes the steps of:
s51, fixing the foundation bolts on the base of the support, positioning the lower ends of the foundation bolts in the reserved holes of the concrete foundation, pouring concrete into the reserved holes for primary grouting, and curing after vibrating compaction until the concrete is hardened;
and S52, supporting a formwork above the concrete foundation, performing secondary grouting on the space between the support base and the concrete foundation, and curing after vibrating compaction until the concrete is hardened.
7. A method for mounting stand bases of a vertical roller mill according to claim 6, wherein before the step S52 is performed, the step S4 is repeated to secondarily correct the positional parameters of the respective stand bases.
8. A method of installing a stand jig of a vertical roller mill according to claim 7, wherein after repeating step S4, the four peripheral stand jigs are welded using reinforcing bars.
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| CN202110934116.2A CN113638438A (en) | 2021-08-13 | 2021-08-13 | Installation method of roller type vertical mill support base |
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| CN202110934116.2A CN113638438A (en) | 2021-08-13 | 2021-08-13 | Installation method of roller type vertical mill support base |
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Citations (4)
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| CN104989918A (en) * | 2015-05-21 | 2015-10-21 | 中冶天工集团有限公司 | Method for setting large-area foundation pad iron |
| CN108560579A (en) * | 2018-06-15 | 2018-09-21 | 中国电建集团河南工程有限公司 | The pre-buried parallels construction method of spring |
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2021
- 2021-08-13 CN CN202110934116.2A patent/CN113638438A/en active Pending
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|---|---|---|---|---|
| JPH10195885A (en) * | 1997-01-13 | 1998-07-28 | Star House Kk | Concrete foundation for dwelling house and method for fixing bed-sill thereto |
| CN104989918A (en) * | 2015-05-21 | 2015-10-21 | 中冶天工集团有限公司 | Method for setting large-area foundation pad iron |
| CN108560579A (en) * | 2018-06-15 | 2018-09-21 | 中国电建集团河南工程有限公司 | The pre-buried parallels construction method of spring |
| CN113202135A (en) * | 2021-05-12 | 2021-08-03 | 安徽金星钛白（集团）有限公司 | Large-scale movable equipment base installation method based on sand pier iron padding method |
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Application publication date: 20211112 |