Foundation nut
By designing the side flange of the anchor nut and the core tube structure of the housing, the problem of fixing the anchor nut at the bottom of the equipment was solved, achieving a convenient and efficient installation process and stable welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CHENGJING ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-28
- Publication Date
- 2026-05-08
AI Technical Summary
In existing technologies, anchor nuts are difficult to fix at the bottom of equipment, resulting in a complicated construction process and implementation difficulties, especially on large equipment where safety risks are high and efficiency is low.
Design an anchor nut with two intersecting flanges on the side of the nut body. The top of the flanges is lower than the top of the nut to fit the corner of the equipment and allow welding in the normal posture of the equipment. The strength and verticality are improved by the shell and core tube structure. The one-piece molded square cross-section shell is used to enhance the bending stiffness.
This technology enables convenient and precise welding without the equipment needing to be flipped, improving construction efficiency and installation quality, ensuring the levelness of the equipment and the stability of welding parameters, while reducing materials and weight.
Smart Images

Figure CN224214541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastener technology, and in particular to an anchor nut. Background Technology
[0002] In the field of equipment installation and construction, the conventional application logic of anchor bolts is as follows: first, the anchor bolts are pre-embedded in the foundation according to the design requirements. After the foundation has been cured to the required strength, the equipment is fitted with the anchor bolts through the pre-set connection holes on its bottom. Then, the levelness and elevation of the equipment are checked. Finally, the anchor nuts are tightened to complete the rigid connection between the equipment and the foundation, thus achieving stable installation of the equipment.
[0003] In some applications, it's unnecessary to embed anchor bolts in the foundation. Instead, anchor nuts are pre-fixed (e.g., welded) to the bottom of the equipment, allowing the anchor bolts to rotatably. The aim is to flexibly adjust the support height of the equipment by rotating the anchor bolts, thereby simplifying the installation process and improving leveling efficiency. However, fixing anchor nuts to the bottom of the equipment in practice is extremely difficult. In its normal state, the equipment is bottom-down. To fix the anchor nuts (e.g., by welding) to the bottom, the equipment needs to be flipped upside down. For large equipment, due to weight and structural complexity, even with the aid of a crane, there are challenges such as limited operating space, difficult welding, and high safety risks. While lifting smaller equipment is relatively easier, the comfort of the welded position after flipping and the difficulty of precise alignment result in extremely low construction efficiency. Clearly, the traditional method of fixing anchor nuts to the bottom of the equipment presents technical pain points due to its cumbersome process and difficult implementation.
[0004] To address the aforementioned technical issues, this application proposes a novel anchor nut structure. This anchor nut breaks away from conventional forms and installation logic. Through optimized structural design and targeted installation assistance processes, it can be conveniently, efficiently, and precisely welded to the bottom of the equipment in its normal placement position. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a foundation nut, which aims to solve the technical problem that it is difficult to fix the foundation nut to the bottom of the equipment in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An anchor nut includes a nut body with a threaded through hole and two intersecting flanges on the side of the nut body, the tops of which are lower than the top of the nut body.
[0008] Furthermore, in the aforementioned anchor nut, the included angle between the two flanges is 90°.
[0009] Furthermore, in the aforementioned anchor nut, the tops of the two flanges are flush.
[0010] Furthermore, in the aforementioned anchor nut, the nut body includes a housing and a core tube, with a threaded through hole provided on the core tube.
[0011] Furthermore, in the aforementioned anchor nut, the housing includes four side plates and a bottom plate, and the bottom end of the core tube is connected to the bottom plate.
[0012] Furthermore, in the aforementioned anchor nut, at least one reinforcing rib is provided between the core tube and each side plate.
[0013] Furthermore, in the aforementioned anchor nuts, the four side plates are of the same specification, and the included angle between any two adjacent side plates is 90°.
[0014] Furthermore, the anchor nut is integrally formed.
[0015] Beneficial Effects: This utility model provides an anchor nut that, compared to existing technologies, has at least the following advantages: By setting two intersecting flanges outward on the side of the nut body, with the top of the flanges lower than the top of the nut body, the flanges abut against the two sides of the corner of the equipment when the equipment is placed normally. The welding position is located on the outside of the equipment, allowing welding without flipping the equipment, thus solving the problem of difficult construction when the anchor nut is fixed to the bottom of the equipment in traditional processes. The included angle of the two flanges is designed to be 90°, which matches the right angle of the equipment corner, facilitating quick positioning; the flush top of the flanges ensures uniform force on the equipment, guarantees accurate levelness after installation, and facilitates control of welding parameters, ensuring stable welding quality. The nut body adopts a shell and core tube structure, saving materials and weight. The bottom plate of the shell provides a vertical reference surface for the core tube, ensuring the perpendicularity of the threaded through hole. The ribs between the core tube and the side plates improve the strength of the anchor nut and enhance its anti-tilting ability. Four side plates of the same specification with adjacent included angles of 90° form a square cross-section shell, making the bending stiffness of the anchor nut basically consistent in all directions. Attached Figure Description
[0016] Figure 1 The three-dimensional anchor nut provided by this utility model Figure 1 .
[0017] Figure 2 The three-dimensional anchor nut provided by this utility model Figure 2 .
[0018] Figure 3 The front view of the anchor nut provided by this utility model.
[0019] Figure 4 This is a top view of the anchor nut provided by this utility model.
[0020] Figure 5 This is a front view schematic diagram showing the application state of the anchor nut provided by this utility model.
[0021] Figure 6 This is a top view schematic diagram showing the application state of the anchor nut provided by this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Shell; 12. Side plate; 13. Bottom plate; 14. Rib plate;
[0024] 2. Core tube; 20. Threaded through hole;
[0025] 3. Flange. Detailed Implementation
[0026] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.
[0027] Please see Figures 1 to 6 This utility model provides an anchor nut. The accompanying drawings are for illustrative purposes only and are not proportional to an actual product. Figure 5 and Figure 6 The equipment is represented schematically by dashed lines, thus illustrating the relative relationship between the anchor nuts and the equipment.
[0028] The anchor nut includes a nut body with a threaded through hole 20 and two intersecting flanges 3 on the side of the nut body, the tops of which are lower than the top of the nut body.
[0029] Traditional "nut welding at the bottom of the equipment" is difficult to perform, mainly because the welding position is at the bottom of the equipment. For example... Figure 5 and Figure 6 As shown, the anchor nuts provided by this utility model are applied to the bottom of the four corners of the equipment, so that the two sides of the bottom of each corner of the equipment abut against the two flanges of the corresponding anchor nut. The abutment point is the welding position. In this way, the welding position is located on the outside of the equipment rather than the bottom of the equipment, which facilitates construction. In addition to being set at the bottom of the four corners of the equipment, the above-mentioned anchor nuts can also be used to set at the bottom of the straight edge of the equipment. In this case, only one flange of the anchor nut abuts against the bottom of the straight edge of the equipment, and the abutment point (i.e., the welding position) faces the outside of the equipment.
[0030] Preferably, the included angle between the two flanges 3 is 90°. Since the corners of the equipment are generally right angles, the nut body is provided with two vertical flanges, which correspond exactly to the two sides of the corner of the equipment.
[0031] Furthermore, the tops of the two flanges 3 are flush. When the equipment is placed on the anchor nuts, the flush flange tops can evenly abut against the bottom edge of the equipment, making the force on the equipment more balanced. This avoids uneven flange heights that could cause localized heavy stress, tilting, or deformation, ensuring precise levelness after installation. In addition, flush tops ensure consistent contact between the flanges and the bottom of the equipment during welding, making it easier to control welding parameters (such as welding current and time) and resulting in more stable welding quality.
[0032] Furthermore, the nut body includes a housing 1 and a core tube 2, with a threaded through hole 20 provided on the core tube 2. This arrangement can save material and weight for the anchor nut.
[0033] Furthermore, the housing includes four side plates 12 and a bottom plate 13, with the bottom end of the core tube connected to the bottom plate. The bottom plate provides a vertical reference surface for the core tube, and during assembly, the bottom end of the core tube fits against the bottom plate to ensure the perpendicularity of the threaded through hole. Two of the four side plates are used to set the flange.
[0034] Furthermore, at least one stiffening rib 14 is provided between the core tube and each side plate. The stiffening rib can improve the strength of the anchor nuts, and can provide reverse support when the equipment is subjected to external forces and tends to tilt.
[0035] Furthermore, the four side plates are of the same specification, and the included angle between any two adjacent side plates is 90°. The four side plates of the same specification form a square cross-section shell (with adjacent included angles of 90°), so that the bending stiffness of the anchor nuts in the directions corresponding to the four side plates is basically the same.
[0036] Preferably, the anchor nut is integrally formed. Integral forming of the anchor nut can eliminate assembly gaps, improve overall strength and fatigue resistance, while simplifying the manufacturing process, reducing costs and ensuring dimensional accuracy.
[0037] The anchor nuts mentioned above can be made of metal or plastic (such as polyethylene, polypropylene, polyvinyl chloride, etc.).
[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.
Claims
1. An anchor nut, comprising a nut body, wherein a threaded through hole is provided on the nut body, characterized in that: The nut body has two intersecting flanges on its side facing outwards, and the tops of the two flanges are lower than the top of the nut body.
2. The anchor nut according to claim 1, characterized in that: The included angle between the two flanges is 90°.
3. The anchor nut according to claim 1, characterized in that: The tips of the two flanges are flush.
4. The anchor nut according to claim 1, characterized in that: The nut body includes a housing and a core tube, with a threaded through hole provided on the core tube.
5. The anchor nut according to claim 4, characterized in that: The housing consists of four side plates and a bottom plate, with the bottom end of the core tube connected to the bottom plate.
6. The anchor nut according to claim 5, characterized in that: At least one stiffening plate is provided between the core tube and each side plate.
7. The anchor nut according to claim 5, characterized in that: The four side panels are identical in size, and the included angle between any two adjacent side panels is 90°.
8. The anchor nut according to any one of claims 1-7, characterized in that: The anchor nut is integrally formed.