An adjustable shim for installing large equipment

Abstract

The utility model belongs to mechanical equipment installation technical field provides an adjustable pad iron for installing large -scale equipment, include: pad iron body, it has the hole support lug; expansion bolt, its lower extreme is fixed insertion in the drill hole of foundation in the form of expansion, upper end screw rod lengthens to freely pass through the hole support lug, first nut is connected on the screw rod of expansion bolt below the hole support lug with screw thread, and second nut is connected on the screw rod of expansion bolt above the hole support lug with screw thread, wherein, the hole support lug and expansion bolt are each provided with three in one-to-one mode, and the connection of the hole center of three hole support lugs constitutes the isosceles triangle, so that three expansion bolts pass through first nut and form three point support to pad iron body, through three hole support lugs, three expansion bolts and first nut respectively with its screw thread support pad iron body, can first simultaneously adjust the levelness and elevation of pad iron body of multiple pad iron, then simultaneously grout, can improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment installation technology, specifically to an adjustable shim for installing large equipment. Background Technology

[0002] During the installation of mechanical equipment, it is generally necessary to pre-embed shims in the civil engineering foundation under its base. The shims are used to level and align the equipment, ensuring the overall levelness of the equipment. At the same time, placing shims at the bottom of the equipment can compensate for construction errors in the civil engineering foundation, so that the equipment installation meets the design requirements of the drawings.

[0003] Currently, the installation of large equipment or units requires the pre-embedding of a large number of shims on the civil foundation. Traditional shim pre-embedding often employs the grouting method: first, a square pit slightly larger than the shims' length and width is chiseled into the concrete foundation; then, the pit and the concrete foundation surface are cleaned with water, and any accumulated water is removed; next, mortar is piled up, and the shims are placed on top; then, the shims are adjusted and measured to ensure that the allowable deviation of the shim's top surface level is 2mm / m, and that its elevation matches the actual installation elevation of the equipment's bottom surface with an allowable deviation of ±2mm; finally, the mortar around the shims is smoothed into a 45° slope and then cured. However, adjusting a large number of shims to a uniform standard (where the levelness and elevation mentioned above fall within the allowable deviation range) often requires multiple adjustments and measurements, which takes a long time, prolonging the construction period for grout curing and equipment installation, and reducing construction efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable shim for installing large equipment, which solves the problem that existing shims pre-embedded using the grouting method require multiple adjustments and measurements, which takes a long time and leads to extended construction periods and reduced construction efficiency for grout curing and equipment installation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An adjustable shim for mounting large equipment includes:

[0007] The pad body has perforated lugs;

[0008] An expansion bolt, the lower end of which is fixedly inserted into a drilled hole in the foundation in the form of expansion, and the upper end of which is extended to freely pass through the perforated lug;

[0009] The first nut is threaded onto the bolt of the expansion bolt below the perforated lug; and

[0010] The second nut is threaded onto the bolt of the expansion bolt above the perforated lug;

[0011] The perforated lugs and the expansion bolts are provided in a one-to-one manner, with three of each. The line connecting the centers of the holes of the three perforated lugs forms an isosceles triangle, so that the three expansion bolts provide three-point support to the pad body through the first nut.

[0012] In one embodiment disclosed in this application, the pad body has a cuboid structure;

[0013] One of the perforated lugs is welded to the middle of the side face corresponding to one of the wide sides of the cuboid;

[0014] The other two perforated lugs are symmetrically welded to the two ends of the side corresponding to the other wide side of the cuboid.

[0015] In one embodiment disclosed in this application, the pad body has a cuboid structure;

[0016] One of the perforated lugs is welded to the middle of the side face corresponding to one of the wide sides of the cuboid;

[0017] The other two perforated lugs are welded symmetrically to the opposite sides of the long side of the cuboid, close to the other wide side of the cuboid.

[0018] In one embodiment disclosed in this application, the perforated lug has an L-shaped cross-section, with its short side welded to the pad body, its long side horizontally arranged above the short side, and the outer surface corresponding to the long side being lower than the top surface of the pad body.

[0019] In one embodiment disclosed in this application, the thickness of the perforated lug is less than the thickness of the pad body.

[0020] In one embodiment disclosed in this application, a square mold box is also included for surrounding the body of the pad to facilitate the filling of grout.

[0021] In one embodiment disclosed in this application, the square mold box has no lid or bottom, and a sealing layer is provided at the contact point between its bottom edge and the foundation to prevent leakage of grouting material.

[0022] In one embodiment disclosed in this application, the sealing layer is made of silicone resin.

[0023] In one embodiment disclosed in this application, the top edge of the square mold box is higher than the bottom surface of the pad body and lower than the top surface of the pad body.

[0024] In one embodiment disclosed in this application, if the distance between two or more adjacent pad bodies is less than or equal to the length of one pad body, then the two or more adjacent pad bodies share one square mold box.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The shim body is supported by three perforated lugs, three expansion bolts, and a first nut that is threaded to them. The level and elevation of multiple sets of shims can be adjusted simultaneously, and then grouting can be performed at the same time. This can greatly shorten the time for grout curing and equipment installation, improve construction efficiency, and the three-point support has high stability, which not only ensures accuracy but also reduces the amount of adjustment work.

[0027] 2. Weld three perforated lugs to the side corresponding to the wide or long side of the shim body for connection with expansion bolts. This method is easy to construct and does not occupy the top surface of the shim body. It is beneficial to adjust the level and elevation of the shim body. At the same time, it avoids deformation caused by drilling holes in the shim body and does not damage the smoothness of the contact surface between the shim body and the large equipment, reducing the impact on the accuracy of the shim body itself and ensuring the installation accuracy of the large equipment in the later stage.

[0028] 3. The square mold box can surround the grouting material during grouting, which can significantly reduce mortar voids and improve the stability of the shim group compared with the grouting method.

[0029] 4. By sharing a single square mold box, two or more adjacent shim bodies can not only minimize the number of square mold boxes required and save costs, but also allow the two or more adjacent shim bodies to be cast as a whole during grouting, forming a connected and larger support base, increasing support strength, and further improving the stability of large equipment after installation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the main cross-section of the present invention;

[0032] Figure 2 This is a top view of the structure of this utility model. Figure 1 ;

[0033] Figure 3 This is a top view of the structure of this utility model. Figure 2 . Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] See Figures 1-3 As shown, this utility model provides an adjustable shim for installing large equipment, comprising:

[0042] The pad body 10 has perforated lugs 11;

[0043] Expansion bolt 20, the lower end of which is fixedly inserted into the drilled hole of foundation 60 in the form of expansion, and the upper end of the screw is extended to freely pass through the perforated lug 11;

[0044] The first nut 30 is threadedly connected to the bolt of the expansion bolt 20 below the perforated lug 11; and

[0045] The second nut 40 is threaded onto the bolt of the expansion bolt 20 above the perforated lug 11;

[0046] Among them, there are three perforated lugs 11 and three expansion bolts 20 in a one-to-one manner. The line connecting the centers of the holes of the three perforated lugs 11 forms an isosceles triangle, so that the three expansion bolts 20 form a three-point support for the pad body 10 through the first nut 30.

[0047] During construction, the first stage involves drilling holes (with diameters and depths matching the expansion bolts 20) on the foundation 60 where the large equipment will be installed, based on the three vertices of an isosceles triangle. Then, the three expansion bolts 20 are inserted or driven into the drilled holes, and the nuts on each bolt 20 are tightened to open their sleeves and fix them to the foundation 60. Next, the first nuts 30 are screwed onto the extended threads of the three expansion bolts 20. Then, the three perforated lugs 11 of the shim body 10 are aligned with the extended threads of the three expansion bolts 20, allowing the threads to pass freely through the lugs 11, thus supporting the shim body 10 on the three expansion bolts 20. Above 0, the second nut 40 is screwed onto the extended screws of the three expansion bolts 20, and this process is repeated to pre-place multiple sets of shims; Second stage: Using a laser level and a frame level (or theodolite), the elevation of multiple sets of shims is simultaneously adjusted by fine-tuning the first nut 30, adjusting the allowable deviation of the levelness of the top surface of each set of shims to within 0.5mm / m and the allowable deviation of the elevation to within ±0.5mm, and then tightening the second nut 40 to fix the shim body 10; Third stage: Grouting material is filled around each set of shims and cured for a certain period of time to obtain the support base for large equipment. Compared with the grouting method, this utility model adjusts first and then grouts, resulting in smaller allowable deviations in the levelness and elevation of the top surface of each set of shims, and improving the installation accuracy of large equipment (by about 4 times). In other words, by supporting the shim body 10 with three perforated lugs 11, three expansion bolts 20, and first nuts 30 connected to them by threads, the level and elevation of multiple sets of shim bodies 10 can be adjusted simultaneously, and then grouting can be carried out simultaneously. This can greatly shorten the time for grout curing and equipment installation, improve construction efficiency, and the three-point support has high stability, which not only ensures accuracy but also reduces the amount of adjustment work.

[0048] See Figure 2 As shown, the pad body 10 has a rectangular parallelepiped structure. One perforated lug 11 is welded to the middle of the side corresponding to one wide side of the parallelepiped. The other two perforated lugs 11 (shown as solid lines) Figure 2 and Figure 3 (Illustrated) They are welded symmetrically to both ends of the side corresponding to the other wide side of the cuboid.

[0049] In another embodiment, the pad body 10 has a cuboid structure, with one perforated lug 11 welded to the middle of the side corresponding to one wide side of the cuboid, and two other perforated lugs 11 (marked by dashed lines) Figure 2 and Figure 3 (Illustrative image) The components are welded symmetrically and close to the other wide side of the cuboid to the opposite side corresponding to the long side of the cuboid. This allows for avoidance when the other wide side of the cuboid is close to the edge of the foundation 60 (or the location of the foundation pit).

[0050] Three perforated lugs 11 are welded to the side of the shim body 10 corresponding to the wide or long side to connect with the expansion bolts 20. This method is easy to construct and does not occupy the top surface of the shim body 10. It is beneficial to adjust the level and elevation of the shim body 10. At the same time, it can avoid the deformation caused by drilling holes in the shim body 10 and will not damage the smoothness of the contact surface between the shim body 10 and the large equipment, thereby reducing the impact on the accuracy of the shim body 10 itself and ensuring the installation accuracy of the large equipment in the later stage.

[0051] See Figure 1 As shown, the perforated lug 11 has an L-shaped cross-section. Its short side is welded to the base body 10, and its long side is horizontally arranged above the short side, with the outer surface corresponding to the long side lower than the top surface of the base body 10. In this way, the perforated lug 11 is easier to weld and has higher support strength.

[0052] The thickness of the perforated lug 11 is less than the thickness of the shim body 10. This frees up space to accommodate the first nut 30 and the second nut 40, while also facilitating observation of the position and tightening of the first nut 30 and the second nut 40, and making it easier to adjust the level and elevation of the shim body 10.

[0053] The aforementioned adjustable shims for installing large equipment also include a square mold box 50, which surrounds the shim body 10 to facilitate the filling of grout. Specifically, the square mold box 50 has no lid or bottom, and its bottom edge, where it contacts the foundation 60, has a sealing layer (not shown in the figure) to prevent grout leakage. By using the square mold box 50, the grout can be contained during grouting, significantly reducing mortar voids and improving the stability of the shim assembly compared to the seat grouting method.

[0054] In this embodiment, the sealing layer is preferably made of silicone resin. Silicone resin is readily available and inexpensive.

[0055] See Figure 1 As shown, the top edge of the square mold box 50 is higher than the bottom surface of the shim body 10 but lower than the top surface of the shim body 10. This ensures that the height of the concrete after grouting is lower than the top surface of the shim body 10, so that the top surface of the shim body 10 is fully exposed to support large equipment.

[0056] See Figure 3As shown, if the distance between two or more adjacent shim bodies 10 is less than or equal to the length of one shim body 10, then the two or more adjacent shim bodies 10 share a single square mold box 50. That is, the specific size of the square mold box 50 depends on the distance between the two or more adjacent shim bodies 10. This not only minimizes the number of square mold boxes 50 required, saving costs, but also allows the two or more adjacent shim bodies 10 to be cast integrally during grouting, forming a connected and larger support base, increasing support strength, and further improving the stability of large equipment after installation.

[0057] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. An adjustable shim for installing large equipment, characterized in that, include: The pad body has perforated lugs; An expansion bolt, the lower end of which is fixedly inserted into a drilled hole in the foundation in the form of expansion, and the upper end of which is extended to freely pass through the perforated lug; The first nut is threaded onto the bolt of the expansion bolt below the perforated lug; and The second nut is threaded onto the bolt of the expansion bolt above the perforated lug; The perforated lugs and the expansion bolts are provided in a one-to-one manner, with three of each. The line connecting the centers of the holes of the three perforated lugs forms an isosceles triangle, so that the three expansion bolts provide three-point support to the pad body through the first nut.

2. The adjustable shim for installing large equipment according to claim 1, characterized in that: The pad body has a rectangular parallelepiped structure; One of the perforated lugs is welded to the middle of the side face corresponding to one of the wide sides of the cuboid; The other two perforated lugs are symmetrically welded to the two ends of the side corresponding to the other wide side of the cuboid.

3. The adjustable shim for installing large equipment according to claim 1, characterized in that: The pad body has a rectangular parallelepiped structure; One of the perforated lugs is welded to the middle of the side face corresponding to one of the wide sides of the cuboid; The other two perforated lugs are welded symmetrically to the opposite sides of the long side of the cuboid, close to the other wide side of the cuboid.

4. The adjustable shim for installing large equipment according to any one of claims 1 to 3, characterized in that, The perforated lug has an L-shaped cross-section, with its short side welded to the pad body and its long side horizontally positioned above the short side, and the outer surface corresponding to the long side being lower than the top surface of the pad body.

5. The adjustable shim for installing large equipment according to claim 4, characterized in that, The thickness of the perforated lug is less than the thickness of the pad body.

6. The adjustable shim for installing large equipment according to claim 1 or 5, characterized in that, It also includes a square mold box for surrounding the body of the pad to facilitate the filling of grout.

7. The adjustable shim for installing large equipment according to claim 6, characterized in that, The square mold box has no lid and no bottom.

8. The adjustable shim for installing large equipment according to claim 7, characterized in that, The top edge of the square mold box is higher than the bottom surface of the pad body and lower than the top surface of the pad body.

9. The adjustable shim for installing large equipment according to claim 8, characterized in that, If the distance between two or more adjacent pad bodies is less than or equal to the length of one pad body, then the two or more adjacent pad bodies share one square mold box.

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