Large equipment foundation bolt positioning device and mounting method

Abstract

The invention discloses a large equipment foundation bolt positioning device and an installation method. The positioning device comprises a positioning disc, a plurality of positioning bottom plates are arranged on the positioning disc in the circumferential direction, a plurality of supporting screws are arranged between the positioning bottom plates and a positioning base, the positioning bottom plates are connected with the lower ends of the supporting screws, the upper ends of the supporting screws are connected with the positioning base, and embedded bolts are arranged on the positioning base. The mounting method comprises the following steps: manufacturing a positioning disc, a positioning bottom plate and a positioning base; a positioning disc is pre-buried on site; a supporting screw rod is installed, and leveling of the positioning base is achieved through the supporting height of the supporting screw rod; and the operation is repeated until all the positioning bases are installed, and accurate installation of the embedded bolts on the positioning bases is achieved. The positioning device has the beneficial effects that the positioning disc is used as a foundation for positioning the embedded bolts, the accuracy and integrity of positioning can be guaranteed, the accuracy of the positions of all the embedded bolts is guaranteed, and overall mounting and fixing of large equipment can be met.

Description

Technical Field

[0001] The present application belongs to the technical field of installation of large equipment and civil engineering, and specifically relates to a large equipment anchor bolt positioning device and installation method, which is not connected to or interferes with the foundation steel bars of the civil engineering and is not prone to displacement. Background Art

[0002] The anaerobic tank is a highly efficient multi-stage internal circulation anaerobic reaction tank used for the treatment of organic high-concentration wastewater. Taking a certain anaerobic tank as an example, the foundation thickness of its civil engineering is 1.1m, the embedded bolts are M56, a total of 28, the center radius R = 7.25m, the ring is evenly arranged, the embedded bolt length is 1.71m, and the exposed concrete surface layer is 660mm.

[0003] The current common practice is: a single bolt uses the foundation steel bars of the civil engineering project as a fixed support, and adds diagonal bracing steel bars for reinforcement, which are connected to the foundation steel bars. Each bolt is installed one by one, and the angle is divided with a theodolite, and the radius is measured with a steel ruler. First, the top position of the bolt is aligned, and then the verticality is aligned. The deviation is controlled within the allowable range, and then the embedded steel bars for tie-in are welded to the foundation steel bars at the bottom to make it stable. The elevation and verticality of the bolt are corrected twice with a theodolite and a level ruler. After the correction is correct, the lower end is welded and fixed with diagonal bracing steel bars.

[0004] The bolt installation accuracy is poor during the construction of the above method, the relative position is difficult to control, the bolt installation is difficult to operate, and welding can easily damage the bolts. During the later pouring of concrete, the movement of personnel and the vibration process usually cause the anchor bolts to shift and tilt. The quality of bolt installation directly affects the installation of later equipment and structures, and is the focus of quality control during construction. Summary of the invention

[0005] The purpose of this application is to provide a large-scale equipment anchor bolt positioning device and installation method, which solves the problem of poor installation quality of existing embedded bolts.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] A large equipment anchor bolt positioning device comprises a positioning disc, wherein the positioning disc is provided with a plurality of positioning base plates arranged along the circumference, a plurality of supporting screws are arranged between the positioning base plates and the positioning base, the positioning base plates are connected to the lower ends of the supporting screws, the upper ends of the supporting screws are connected to the positioning base, and the positioning base is provided with embedded bolts.

[0008] Furthermore, the positioning disc is formed by splicing a plurality of arc plates.

[0009] Furthermore, the positioning bottom plate is a channel steel with the opening facing downward, and the positioning base is a steel plate.

[0010] Furthermore, four supporting screws are provided between the positioning base plate and the positioning base, and the four supporting screws are arranged at the four corners of the square.

[0011] Furthermore, the lower end of the support screw is fixed to the positioning base plate by a threaded lower fixing nut, the middle of the support screw is provided with an adjustable nut that supports the positioning base, and the upper end of the support screw is provided with an upper fixing nut that presses down the positioning base.

[0012] Furthermore, a stiffening plate is provided between the positioning base and the embedded bolts.

[0013] Furthermore, foundation steel bars are arranged between the positioning base plate and the positioning base.

[0014] A method for installing anchor bolts of large equipment comprises the following steps:

[0015] Step A, making a positioning disc, a positioning base plate and a positioning base;

[0016] Step B, pre-embed and place the positioning disc on site;

[0017] Step C, installing a support screw between the positioning base plate on the positioning disc and the positioning base, and leveling the positioning base through the support height of the support screw;

[0018] Step D, repeat step C until all positioning bases are installed, and the embedded bolts on the positioning bases are accurately installed.

[0019] Furthermore, a positioning disc is manufactured in a processing workshop, the positioning base plate and the positioning base are fitted and fixed up and down to keep the centers relative, and bolt holes are processed on the positioning base plate and the positioning base; the position of the positioning base plate is marked out on the positioning disc, and then the positioning base plate is fixed on the positioning disc; the embedded bolts are fixed at the center of the positioning base.

[0020] Furthermore, the center point and edge position of the positioning base plate are measured and marked on the positioning disc. The center point of the positioning disc is measured first, and a cross axis is established at this center point. The vertical distances xi and yi between each embedded bolt and the X-axis and Y-axis of the cross axis are calculated in turn, and the installation position is determined by the intersection of the two axes. The positioning disc is accurately positioned and marked, and the positioning base plate is fixed on the positioning disc.

[0021] Furthermore, in step A, the positioning disc is divided into a plurality of arc plates in a processing workshop, and in step B, the plurality of arc plates are assembled and connected into an integral positioning disc on site.

[0022] Furthermore, in step C, the lower end of the support screw is fixed to the positioning base plate by a threaded lower fixing nut, and an adjustable nut is screwed into the middle of the support screw. The distance between the positioning base plate and the positioning base is controlled by the adjustable nut. The elevation and levelness of the positioning base are adjusted by a spirit level in conjunction with the adjustable nut. After it is in place, the upper fixing nut is screwed into the upper end of the support screw to connect and fix the positioning base plate, the positioning base and the support screw as a whole.

[0023] Furthermore, in step C, foundation steel bars are arranged and inserted between the positioning base plate and the positioning base.

[0024] Beneficial effects of this application:

[0025] (1) Using the positioning disc as the basis for the positioning of the embedded bolts can ensure the accuracy and integrity of the positioning, ensure the accuracy of the position of all embedded bolts, and meet the overall installation and fixation of large equipment.

[0026] (2) The embedded bolts are raised by positioning the bottom plate and the positioning base to ensure that the embedded bolts are exposed. The support screws can be used to achieve the final leveling and height adjustment of the embedded bolts to ensure the final installation accuracy.

[0027] (3) The positioning disc, positioning base plate and positioning base are finally cast and embedded in the concrete, and combined with the foundation steel bars, the strength of the concrete after pouring of the civil engineering project can be improved, and the effect of the fixed connection of the embedded bolts can also be improved.

[0028] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a top view of the structure of this application.

[0030] Figure 2 It is the main structural view of any node in this application.

[0031] Figure 3 It is a top view of the structure of the positioning base of the present application.

[0032] Figure 4 It is a schematic diagram of positioning the base plate of the present application.

[0033] In the figure: 1-positioning disc, 2-positioning base plate, 3-positioning base, 4-embedded bolts, 5-support screw rods, 6-upper fixing nuts, 7-adjustable nuts, 8-lower fixing nuts, 9-stiffening plates, 10-foundation steel bars. DETAILED DESCRIPTION

[0034] The following non-limiting examples are provided to illustrate the present application.

[0035] Example 1

[0036] refer to Figure 1 to Figure 4 As shown, a large equipment anchor bolt positioning device includes a positioning disc 1, a positioning base plate 2, a positioning base 3, embedded bolts 4, a support screw 5, an upper fixing nut 6, an adjustable nut 7, a lower fixing nut 8, a stiffening plate 9 and a foundation steel bar 10.

[0037] The positioning disc 1 is a circular ring structure, which can form an integral positioning foundation to provide positioning support for all embedded bolts 4. The positioning disc 1 can be an integrated structure, and preferably the positioning disc 1 is composed of several arc plates. The positioning disc 1 is directly divided into blocks during processing and manufacturing, and then reassembled when used on site, which reduces the difficulty of processing and transportation.

[0038] A plurality of positioning base plates 2 are evenly arranged (at equal angles and arc lengths) along the circumference of the positioning disc 1. A plurality of supporting screws 5 are provided between the positioning base plates 2 and the positioning base 3. The positioning base plates 2, the positioning base 3 and the supporting screws 5 are height-supported to supplement the height between the buried positioning disc 1 and the exposed embedded bolts 4.

[0039] The positioning base plate 2 is a channel steel with the opening facing downwards, and the two wings of the channel steel are perpendicular to the radial direction of the positioning disc 1, which facilitates the positioning and fixing of the channel steel and can also form a good supporting effect. The positioning base 3 is a steel plate with a rectangular structure. The contour of the positioning base 3 is the same as the contour of the web of the positioning base plate 2. When the two are fitted up and down and face each other, they have the same center position, ensuring that the upper and lower centers are still compared after the padding.

[0040] The positioning base plate 2 is connected to the lower end of the support screw 5, and the upper end of the support screw 5 is connected to the positioning base 3. The support screw 5 is used to support the transition between the positioning base plate 2 and the positioning base 3. The elevation and levelness of the positioning base 3 can be adjusted by adjusting the support height of the support screw 5.

[0041] Four support screws 5 are provided between the positioning base plate 2 and the positioning base 3. The four support screws 5 are arranged at the four corners of the square. The line connecting two pairs of diagonal support screws 5 is parallel to the radial direction, and the line connecting the other two pairs of diagonal support screws 5 is perpendicular to the radial direction. The support screws 5 at the four corners can be supported by forces in both radial and circumferential directions, and it is also convenient to adjust the positioning base 3 in these two directions.

[0042] The lower end of the support screw 5 is fixed to the positioning base plate 2 by a threaded lower fixing nut 8. The lower fixing nut 8 can be a single one directly welded to the web of the positioning base plate 2, or two lower fixing nuts 8 can be used to clamp and fix the web of the positioning base plate 2 up and down.

[0043] An adjustable nut 7 for supporting the positioning base 3 is provided in the middle of the support screw 5. By rotating the adjustable nut 7, the height of the positioning base 3 can be adjusted. Multiple adjustable nuts 7 can work together to level the positioning base 3. An upper fixing nut 6 for pressing down the positioning base 3 is provided at the upper end of the support screw 5. After the positioning base 3 is adjusted into place, the positioning base 3 is pressed and fixed by the upper fixing nut 6. The positioning base plate 2, the positioning base 3 and the support screw 5 can be fixed by spot welding later.

[0044] An embedded bolt 4 is welded at the center of the positioning base 3. The embedded bolt 4 needs to be kept in an upright state. The embedded bolt 4 needs to be exposed from the concrete to be connected and fixed with large equipment (such as an anaerobic tank). A stiffening plate 9 is provided between the positioning base 3 and the embedded bolt 4. The stiffening plate 9 is located at the four corners of the positioning base 3 to maintain the stability of the embedded bolt 4.

[0045] Foundation steel bars 10 are arranged between the positioning base plate 2 and the positioning base 3. By inserting the foundation steel bars 10 into the space between the positioning base plate 2 and the positioning base 3, the foundation steel bars 10 can be combined with the positioning device, which can not only improve the strength of the concrete after pouring of the civil engineering project, but also improve the effect of the fixed connection of the embedded bolts.

[0046] Example 2

[0047] refer to Figure 1 to Figure 4 As shown, a method for installing anchor bolts of large equipment includes the following steps.

[0048] Step A, manufacturing the positioning disc 1, the positioning base plate 2 and the positioning base 3.

[0049] According to the drawings, the anaerobic tank foundation has a diameter of 14.5m, including 28 large-diameter anchor bolts (M56), and a steel plate base is set at the root of each bolt. The positioning disc 1 is made in the processing workshop, with a width of 250mm, an outer diameter of 14.5m, and an inner diameter of 14.25m. The positioning disc 1 is divided into several arc plates in the processing workshop, preferably divided into 8 pieces on average, and each piece is processed into 1 / 8 of a 250mm wide arc plate.

[0050] Fix the positioning base plate 2 and the positioning base 3 up and down to keep the centers relative to each other, and process four bolt holes on the positioning base plate 2 and the positioning base 3. Locate the position of the positioning base plate 2 on the positioning disc 1, and then weld the positioning base plate 2 to the positioning disc 1.

[0051] Positioning method of positioning base plate 2: measure and set out the center point and edge position of positioning base plate 2 on positioning disc 1, first measure the center point of positioning disc 1, establish a cross axis with this center point, and use CAD software to calculate the vertical distances xi and yi (i is 1, 2, 3, etc.) between each embedded bolt 4 and the X axis and Y axis of the cross axis in sequence, determine the installation position with the intersection of the two axes, accurately position and mark on positioning disc 1, and weld the positioning base plate 2 to the positioning disc 1. Ensure that the positioning dimensions of each positioning base plate 2 are reliable and accurate.

[0052] Step B, pre-embed and install the positioning disc 1 on site. At the construction site, several arc plates are assembled and welded to form a whole positioning disc 1, and the positioning disc 1 is pre-embedded on the cushion layer, and the positioning disc 1 is flush with the top elevation of the cushion layer. The embedded bolt 4 is welded and fixed at the center of the positioning base 3, and the embedded bolt 4 is kept vertical by perforated plug welding.

[0053] Step C: installing a support screw 5 between the positioning base plate 2 and the positioning base 3 on the positioning disc 1 , and leveling the positioning base 3 through the support height of the support screw 5 .

[0054] The lower end of the support screw 5 is fixed to the positioning base plate 2 through a threaded lower fixing nut 8. The lower fixing nut 8 can be a single one directly welded to the web of the positioning base plate 2, or two lower fixing nuts 8 can be used to clamp and fix the web of the positioning base plate 2 up and down.

[0055] An adjustable nut 7 is screwed into the middle of the supporting screw rod 5. The adjustable nut 7 supports the positioning base 3. The distance between the positioning base plate 2 and the positioning base 3 is controlled by the adjustable nut 7. The elevation and horizontality of the positioning base 3 are adjusted by a level ruler in conjunction with the adjustable nut 7, that is, the exposed amount and verticality of the embedded bolts 4 on the positioning base 3 are adjusted.

[0056] After it is in place, the upper fixing nut 6 is screwed into the upper end of the support screw 5 to connect and fix the positioning base plate 2, the positioning base 3 and the support screw 5 as a whole. The embedded bolts 4, the positioning base 3 and the positioning base plate 2 can also be spot welded and fixed after they are in place to prevent the nuts from loosening later.

[0057] By arranging and passing the foundation steel bar 10 between the positioning base plate 2 and the positioning base 3, the foundation steel bar 10 can be combined with the positioning device, which can not only improve the strength of the concrete after pouring of the civil engineering project, but also improve the effect of the fixed connection of the embedded bolts.

[0058] Step D, repeat step C until all positioning bases 3 are installed, and the embedded bolts 4 on all positioning bases 3 are accurately installed. Subsequently, concrete is poured, and then the anaerobic tank is fixed.

[0059] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A large equipment anchor bolt positioning device, comprising a positioning disc (1), characterized in that: The positioning disc (1) is provided with a plurality of positioning base plates (2) arranged along the circumference, a plurality of support screws (5) are provided between the positioning base plates (2) and the positioning base (3), the positioning base plates (2) are connected to the lower ends of the support screws (5), the upper ends of the support screws (5) are connected to the positioning base (3), and the positioning base (3) is provided with embedded bolts (4).

2. The large equipment anchor bolt positioning device according to claim 1 is characterized in that: The positioning disc (1) is formed by splicing a number of arc plates.

3. The large equipment anchor bolt positioning device according to claim 1 is characterized in that: The positioning bottom plate (2) is a channel steel with an opening facing downward, and the positioning base (3) is a steel plate.

4. The large equipment anchor bolt positioning device according to claim 1 is characterized in that: Four support screws (5) are provided between the positioning base plate (2) and the positioning base (3), and the four support screws (5) are arranged at the four corners of a square; the lower ends of the support screws (5) are fixed to the positioning base plate (2) by means of screwed lower fixing nuts (8), the middle part of the support screws (5) is provided with an adjustable nut (7) for supporting the positioning base (3), and the upper end of the support screws (5) is provided with an upper fixing nut (6) for pressing down the positioning base (3).

5. The large equipment anchor bolt positioning device according to claim 1 is characterized in that: Basic steel bars (10) are arranged between the positioning base plate (2) and the positioning base (3).

6. A method for installing anchor bolts for large equipment, characterized in that: The steps include: Step A, manufacturing a positioning disc (1), a positioning base plate (2) and a positioning base (3); Step B, pre-embed and place the positioning disc (1) on site; Step C, installing a support screw (5) between the positioning base plate (2) and the positioning base (3) on the positioning disc (1), and achieving leveling of the positioning base (3) through the support height of the support screw (5); Step D, repeating step C until all positioning bases (3) are installed, thereby achieving accurate installation of the embedded bolts (4) on the positioning bases (3).

7. The method for installing large equipment anchor bolts according to claim 6, characterized in that: A positioning disc (1) is manufactured in a processing workshop, a positioning base plate (2) and a positioning base (3) are fixed together up and down to keep their centers relative to each other, and bolt holes are processed on the positioning base plate (2) and the positioning base (3); the position of the positioning base plate (2) is laid out on the positioning disc (1), and then the positioning base plate (2) is fixed on the positioning disc (1); and the embedded bolt (4) is fixed at the center of the positioning base (3); The center point and the edge position of the positioning base plate (2) are measured and laid out on the positioning disc (1). The center point of the positioning disc (1) is first measured, and a cross axis is established at the center point. The vertical distances xi and yi between each embedded bolt (4) and the X axis and Y axis of the cross axis are calculated in sequence. The installation position is determined by the intersection of the two axes. The positioning disc (1) is accurately positioned and marked, and the positioning base plate (2) is fixed on the positioning disc (1).

8. The method for installing large equipment anchor bolts according to claim 6, characterized in that: In step A, the positioning disc (1) is divided into a plurality of arc plates in a processing workshop, and in step B, the plurality of arc plates are assembled and connected into an integral positioning disc (1) on site.

9. The method for installing large equipment anchor bolts according to claim 6, characterized in that: In step C, the lower end of the support screw (5) is fixed to the positioning base plate (2) by means of a screwed lower fixing nut (8), and an adjustable nut (7) is screwed into the middle of the support screw (5). The distance between the positioning base plate (2) and the positioning base (3) is controlled by means of the adjustable nut (7). The elevation and levelness of the positioning base (3) are adjusted by means of a level ruler in conjunction with the adjustable nut (7). After the upper fixing nut (6) is screwed into the upper end of the support screw (5), the positioning base plate (2), the positioning base (3) and the support screw (5) are connected and fixed as a whole.

10. The method for installing large equipment anchor bolts according to claim 6, characterized in that: In step C, foundation steel bars (10) are arranged and inserted between the positioning base plate (2) and the positioning base (3).

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