This application claims priority to Chinese Patent Application No. 201010565452.6, filed on Nov. 25, 2010, entitled “Installing method for anchor cage and installing method for industrial equipment”, which is hereby incorporated by reference in its entirety.
The present invention relates to an anchor bolt installing technology, in particular to an installing method for an anchor cage and a method for installing an industrial equipment.
In the installation of large-sized industrial equipment, the equipment is usually fixed with a foundation connection through an embedded structural piece in foundation concrete. The anchor cage is a common embedded structural form for installing the large-sized industrial equipment.
The existing anchor cage generally comprises such structural pieces as an anchor flange, a shimming flange, anchor bolts and the like, wherein the same number of bolt holes for installing the anchor bolts are respectively and uniformly distributed on the ring-shaped circumferences of the anchor flange and the shimming flange. Usually a template flange for assisting in installation is also used in the installation of the anchor cage, and the same number of bolt holes as that of the bolt holes of the anchor flange and the shimming flange are also uniformly distributed on the ring-shaped circumference of the template flange. When the concrete is poured, the anchor bolts are fixed jointly by the template flange and the anchor flange. The general installing process of the anchor cage is as follows: the anchor flange is fixed on the bottom surface of the foundation; the lower ends of the anchor bolts in the number corresponding to that of the bolt holes of the anchor flange are respectively assembled and fixed in the bolt holes of the anchor flange; the template flange is kept horizontal as far as possible after being hoisted in place, so that the upper end of each anchor bolt penetrates through the corresponding bolt hole of the template flange in the descending process; after the verticality of each anchor bolt is adjusted, the anchor bolts are fixed jointly by the template flange and the anchor flange; the concrete is poured below the template flange to form a concrete platform; the template flange is taken down after the concrete platform reaches the designed intensity, and then the shimming flange is hoisted and fixed at the upper ends of the anchor bolts to form the firm anchor cage. Under some circumstances with lower requirement for the installing precision, the shimming flange can be directly hoisted and kept horizontal as far as possible instead of adopting the template flange to adjust the verticality, and the concrete is poured below the shimming flange after the upper end of each anchor bolt penetrates through and is fixed in the corresponding bolt hole of the shimming flange in the descending process so as to finally form the firm anchor cage.
Along with the development of large size of the industrial equipment, the number of the anchor bolts embedded in the anchor cage becomes larger and larger. Accordingly, the difficulty for adopting the above prior art to install the anchor cage becomes higher and higher.
One aspect of the present invention provides an installing method for an anchor cage, which is used for lowering the installing difficulty of the anchor cage and improving the installing precision of the anchor cage at the same time.
Another aspect of the present invention provides an installing method for an anchor cage, which includes the following steps: providing an anchor flange, wherein a plurality of first bolt holes are dispersedly arranged on the anchor flange along a circumferential direction thereof, and said first bolt holes comprise a first group of bolt holes and a second group of bolt holes;
providing a template flange, wherein a plurality of bolt holes are arranged on the template flange along a circumferential direction thereof, said plurality of bolt holes comprise a first group of bolt holes and a second group of bolt holes, the first group of bolt holes of the template flange correspond to the first group of bolt holes of the anchor flange, and the second group of bolt holes of the template flange correspond to the second group of bolt holes of the anchor flange;
providing a shimming flange, wherein a plurality of bolt holes are arranged on the shimming flange along a circumferential direction thereof, and said bolt holes correspond to the first and second groups of bolt holes of said anchor flange;
assembling and fixing lower ends of part of anchor bolts in the first group of bolt holes of the anchor flange;
assembling upper ends of said part of anchor bolts in the first group of bolt holes of the template flange correspondingly;
adjusting and fixing all the anchor bolts after the rest anchor bolts penetrate through the second group of bolt holes of said anchor flange and the second group of bolt holes of said template flange;
binding reinforcing steel bars and pouring concrete below said template flange to form a reinforced concrete platform; and
taking the template flange down and assembling the upper ends of all the anchor bolts in the plurality of bolt holes of said shimming flange correspondingly.
Still another aspect of the present invention also provides a method for installing an industrial equipment, which includes the above installing method for the anchor cage and a step of installing said industrial equipment on said anchor cage.
According to the above technical solution, the anchor bolts are installed in twice, namely, part of anchor bolts for supporting and positioning are first installed and then the rest anchor bolts are installed after the template flange is well installed, so as to lower the difficulty of installing the template flange, the shimming flange and the anchor bolts and not damage threads of the anchor bolts at the same time, thereby improving the installing precision of the anchor cage.
In order to describe the embodiments of the present invention or the technical solution in the prior art more clearly, drawings needed for describing the embodiments or the prior art will be introduced in brief hereinafter. Obviously, what are described in the following drawings are only some embodiments of the present invention and the ordinary skill in the art can obtain other embodiments according to the drawings without any creative work.
In order to make the purposes, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described hereinafter according to the drawings of the present invention. Obviously, those described here are not all but only a part of embodiments of the present invention. On the basis of the embodiments of the present invention, all other embodiments obtained by the ordinary skill in the art without any creative work should fall in the protection scope of the present invention.
Step 101: the lower ends of part of anchor bolts in the anchor cage are dispersedly assembled and fixed in the first bolt holes 11 of the anchor flange along the circumferential direction of the anchor flange.
Generally speaking, a plurality of first bolt holes for assembling the anchor bolts are uniformly distributed on the anchor flange of the anchor cage in the circumferential direction, and the anchor flange can be formed through the splicing of bisected or quartered sheets or formed of an entire ring.
Step 102: the upper ends of said part of anchor bolts are correspondingly assembled in the bolt holes of the template flange.
In the installing process of the anchor cage, the template flange is used for assisting in installation and accurately positioning the anchor bolts. As the template flange is used for assisting in installation only in the installing process, the thickness of the template flange can be half of that of the shimming flange, while the precision of each bolt hole on the template flange can be higher than that of each bolt hole on the shimming flange; for example, the aperture of the template flange can be smaller than that of the shimming flange; therefore, the positioning precision of the template flange to the anchor bolts is relatively higher. The template flange can be formed of an entire ring or through the splicing of two bisected template flange sheets using a connecting plate.
Step 103: all the anchor bolts are adjusted and fixed after the rest anchor bolts in said anchor cage penetrate through the first bolt holes 15 of said anchor flange and the rest bolt holes of said template flange.
According to Step 101 and Step 102, the 32 anchor bolts which are first installed are used for supporting and positioning the template flange and the anchor flange so as to preliminarily fix the relative position of the template flange. In Step 103, all the anchor bolts are adjusted and fixed by the template flange and the anchor flange after the rest 128 anchor bolts are sequentially installed between the template flange and the anchor flange. As the 32 anchor bolts which are first installed are supported between the template flange and the anchor flange, the rest 128 anchor bolts are relatively easier to be installed. The number of the anchor bolts which are first installed is not limited to 32 and can also be other numbers (for example 24) as long as the anchor flange and the template flange can be firmly supported by the anchor bolts which are first installed.
In the specific installing operation, a ball nut 4 is also assembled on the upper threaded segment of each rest anchor bolt 2. As the rest anchor bolts 2 are assembled after the installation of the template flange 3, the bolt sleeves 21 on the rest anchor bolts 2 are sheathed on the screw rod segments at the middle parts of the anchor bolts 2 after the assembling of the ball nuts 4; in addition, the thermal shrinkable pipes or telescopic hoses 22 are respectively sheathed at the two ends of each bolt sleeve 21. When in installation, the ball nuts 4 are first screwed to the lower ends of the upper threaded segments of the anchor bolts 2, the bolt sleeves 21 are sheathed at the middle parts of the anchor bolts 2, then the nuts are screwed to the upper ends of the lower threaded segments of the anchor bolts, next, the upper threaded segments of the anchor bolts 2 penetrate through the fourth bolt holes 33 from the lower part of the template flange 3, and the lower threaded segments of the anchor bolts 2 penetrate through the corresponding first bolt holes 15 of the anchor flange 1. Then the nuts are screwed to the lower ends of the lower threaded segments of the anchor bolts 2; after the lower ends of the anchor bolts 2 are fixed, the ball nuts 4 are adjusted to the installing height; finally, each anchor bolt 2 is positioned by the template flange 3 and the corresponding ball nut 4, and fixed after the verticality is adjusted. In this step, through the matching between the template flange 3 and the corresponding ball nut 4, the verticality of each anchor bolt 2 can be accurately adjusted so that the installing precision of the anchor cage can be improved.
Step 104: reinforcing steel bars are bound and concrete is poured below said template flange to form a reinforced concrete platform.
Step 105: said template flange is taken down and then the upper ends of all the anchor bolts are correspondingly assembled in the bolt holes of the shimming flange.
After the solidification of the foundation concrete, the template flange 3 for assisting in installation is taken down and the shimming flange 9 is assembled at the upper ends of the anchor bolts 2. The shimming flange 9 can be formed through the splicing of two or four shimming flange sheets or of an entire ring.
Screw holes 91 for assembling a plurality of precision levellers 92 can also be arranged on the shimming flange 9, and the horizontality of the shimming flange 9 can be adjusted through the precision levellers 92 arranged in the screw holes 91. In the specific operation, the precision levellers 92 are assembled in the screw holes 91 below the shimming flange 9, the shimming flange 9 is hoisted on the upper threaded segments of all the anchor bolts 2, and the upper threaded segments of all the anchor bolts 2 are correspondingly assembled in the fifth screw holes 93 of the shimming flange 9; in addition, the precision levellers 92 are adjusted to realize that the surface of the shimming flange 9 is horizontal and the lower surface of the shimming flange 9 is located at the designed height. After the shimming flange 9 is installed, the tower bottom flange 10 of the industrial equipment to be installed and fixed can be fixed together with the anchor cage under the tower bottom flange 10 through the anchor bolts 2. If both the shimming flange 9 and the anchor flange 1 are formed through the splicing of a plurality of sheets, when the shimming flange 9 is hoisted on the upper threaded segments of the anchor bolts 2, an included angle of 45° needs to be retained between a spliced seam of the shimming flange 9 and the spliced seam of the anchor flange 1, thereby ensuring the integral stability of the anchor cage.
In the present embodiment, the anchor bolts are installed in twice, part of anchor bolts for supporting and positioning are first installed and then the rest anchor bolts are installed after the template flange is well installed, so as to lower the difficulty of installing the template flange, the shimming flange and the anchor bolts and not damage threads of the anchor bolts at the same time, thereby improving the installing precision of the anchor cage.
Step 106: four connecting plates are adopted to splice four quartered anchor flange sheets so as to form a ring-shaped anchor flange, and a plurality of rough-adjusting bolts are assembled in second bolt holes 12 distributed on said anchor flange sheets in the circumferential direction.
Step 107: the height of said anchor flange is adjusted through a pair of check nuts located below said anchor flange and assembled on each rough-adjusting bolt.
Generally speaking, the anchor flange in the anchor cage is usually formed through the splicing of bisected or quartered sheets or formed of an entire ring. Being the same as that shown in
After the anchor flange 1 is fixed on the blinding concrete 5 of the foundation, the method in Embodiment 1 can be adopted to carry out subsequent installing operation to finish the installation of the entire anchor cage. The subsequent installing steps will not be described here again.
Furthermore, the shapes of the anchor flange, the template flange, etc. in the present invention are not limited to ring shape but also can be square, rectangle, polygon shape, etc.
Before the installation of the anchor cage in the embodiment, some preparing work can also be carried out, such as counting the number of various components and checking whether the various components are deformed or the threads of the anchor bolts are damaged. In this case, timely treatment can be carried out if any problem is detected so as to ensure the smooth proceeding of subsequent installing work.
In the embodiment, through the rough-adjusting bolts arranged on the anchor flange and the check nuts on the rough-adjusting bolts, the anchor cage cannot easily slide downwards to become loose; meanwhile, the rough-adjusting bolts and the check nuts are also helpful for adjusting the height of the anchor flange.
The embodiment of the method for installing the industrial equipment can include the installing method for the anchor cage in any of the above embodiments and the method for installing the industrial equipment on the anchor cage. After being installed according to the above method, the anchor cage is connected and fixed with the industrial equipment above the anchor cage through the tower bottom flange. The industrial equipment can be a wind power generator and the like.
With the adoption of the method for installing the industrial equipment in the embodiment, the installing difficulty of the anchor cage in the industrial equipment can be lowered and the installing precision can be improved. The operation principle and the achieved technical effect of the method for installing the industrial equipment are the same as those of the installing method for the anchor cage. No more details will be given here again.
Finally, it should be noted that the above examples are merely provided for describing the technical solutions of the present invention, but not intended to limit the present invention. It should be understood by the ordinary skill in the art that although the present invention is described in detail with reference to the foregoing embodiments, modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent replacements can be made to some technical features in the technical solutions, without the essence of corresponding technical solutions departing from the spirit and scope of the embodiments of the present invention.
Number | Date | Country | Kind |
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201010565452.6 | Nov 2010 | CN | national |