Foundation bolt structure of long screw with nut anchor plate
By designing a anchor bolt structure with long screws and nut anchor plates, using nut connections instead of welding, and using high-strength materials, the stability and safety requirements of large-scale cold box equipment are solved, and a low-cost and easy-to-install support device is achieved, ensuring the stable operation of the equipment.
Patent Information
- Application Number
- CN202422088140.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The prior art cannot provide a support device with a simple structure, a firm fixation, a low cost and an easy installation to stabilize the operation of large-scale cold box equipment.
A long screw anchor bolt structure with nut anchor plate was designed. The combination fixing method of studs, anchor plates, washers, washers and nuts were used to connect the studs, spot welding to avoid the thermal impact of high-temperature welding on the studs, and high-strength materials were used to ensure accurate positioning.
It realizes the stable and safe operation of cold box equipment, reduces manufacturing costs, simplifies the installation process, and improves construction efficiency.
Smart Images
Figure CN223136646U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cold box foundation installation, and relates to a foundation bolt structure with a long screw and a nut anchor plate. Background Technique
[0002] With the increasing large-scale of air separation equipment, the cold box and each tower equipment are also continuously increasing in size and height, and the requirements for operation stability and safety are also getting higher and higher. Therefore, there is an urgent need for a support device that can provide firm and reliable technical support for the stability of the cold box equipment, so as to realize the stable operation of the air separation equipment. For this reason, a foundation bolt structure with a long screw and a nut anchor plate is designed. Summary of the Invention
[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide a foundation bolt structure with a long screw and a nut anchor plate, which has a simple and reasonable structure, firm fixation, low manufacturing cost, is easy to manufacture, process and install, has simple construction operation and accurate positioning.
[0004] The utility model is realized by the following technical scheme: a foundation bolt structure with a long screw and a nut anchor plate, which includes a vertically placed stud. The stud is placed in the foundation and tied tightly with the steel bars in the foundation. The upper part of the stud is fixed by a first nut and an anchor plate, and a foundation bottom plate is installed below. The lower part of the foundation bottom plate is fixed by a backing plate, a washer and at least one second nut. The connection between the first nut and the anchor plate is welded and fixed by spot welding. The lower part of the second nut is welded to the washer, the washer is welded to the backing plate, and the backing plate is welded and fixed to the foundation bottom plate.
[0005] Preferably: two second nuts are provided, arranged vertically. The upper second nut is welded to the side of the stud, and the lower second nut is welded to the washer.
[0006] Preferably: both the first nut and the second nut are hexagon head nuts, and the spot welding position is located in the middle of the straight side section of the nut hexagon head.
[0007] Preferably: the diameter of the spot welding is 4mm, and the number of spot welds is at least 2, evenly distributed along the circumferential direction.
[0008] Preferably: the materials of the screw and the nut are 20CrMo.
[0009] Preferably: the materials of the anchor plate and the backing plate are high-strength low-alloy structural steel, and the model is Q355B.
[0010] Preferably: the material of the washer is steel 200HV.
[0011] The beneficial effects of the present utility model are as follows: The anchor bolt structure of the long screw rod with a nut anchor plate designed by the utility model is applicable to the stability and safety during the operation of cold boxes and towers. It uses simple materials, has low manufacturing costs, is easy to manufacture, process, and install, has simple construction operations, and accurate positioning, providing firm and reliable technical support for the stability of cold box equipment to achieve the stable operation of air separation equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic structural diagram of the whole of the present utility model.
[0013] Figure 2 It is an installation schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] To enable those of ordinary skill in the art to more clearly understand the purpose, technical solutions, and advantages of the present utility model, the following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments.
[0015] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", "vertical", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0016] The following will introduce the present utility model in detail with reference to the accompanying drawings: As Figure 1-2 shown, an anchor bolt structure of a long screw rod with a nut anchor plate includes a vertically placed stud 1, which is placed in the foundation and tied tightly with the steel bars in the foundation. The upper part of the stud 1 is fixed by a first nut 2 and an anchor plate 3, and a foundation bottom plate 4 is installed below. Below the foundation bottom plate 4, it is fixed by a backing plate 5, a washer 6, and at least one second nut 7. The connection between the first nut 2 and the anchor plate 3 is welded and fixed by spot welding 8. The lower part of the second nut 7 is welded to the washer 6, the washer 6 is welded to the backing plate 5, and the backing plate 5 is welded and fixed to the foundation bottom plate 4.
[0017] In the present utility model, the connection between the anchor plate and the stud is changed from the original welding method to nut fastening, reducing the heat input to the stud during welding, avoiding "secondary heat treatment", and better ensuring the performance of the original anchor bolt.
[0018] There are two second nuts 7 arranged vertically one above the other. The upper second nut 7 is welded to the side of the stud 1, and the lower second nut 7 is welded to the washer. Both the first nut 2 and the second nut 7 are hexagon head nuts, and the spot welding 8 positions are located in the middle of the straight side section of the nut hexagon head. The diameter of the spot welding 8 is 4 mm, and the number of spot weldings 8 is at least 2, evenly distributed along the circumferential direction. The materials of the screw rod and the nut are 20CrMo. The materials of the anchor plate 3 and the backing plate 5 are high-strength low-alloy structural steel, and the model is Q355B. The material of the washer 6 is steel 200HV.
[0019] The working process of the present utility model is as follows:
[0020] Vertically place the stud and tie it tightly with the steel bars in the foundation, adjust to the appropriate height → fix it by primary grouting → sequentially install and place the foundation bottom plate, backing plate, washer, nuts (the first nut and the second nut) on the foundation → perform welding fixation → fix it by secondary grouting → complete the installation.
[0021] The structure of the present utility model uses materials sparingly, has a low manufacturing cost, is easy to manufacture, process and install, and the construction operation is simple, providing firm and reliable technical support for the stability of the cold box equipment to achieve the stable operation of the air separation equipment.
[0022] For the installation of the present utility model, select appropriate welding electrodes and welding processes, and weld by certified welders to ensure the welding quality; all welds shall be subjected to visual inspection, and no welding defects shall exist; the welds shall be subjected to penetrant inspection in accordance with NB / T47013.5, and the evaluation grade is Grade I.
[0023] The specific embodiments described herein are only illustrative of the principles and effects of the present utility model, rather than limiting the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model shall still be covered by the claims of the present utility model.
Claims
1. An anchor bolt structure with a long screw rod and a nut anchor plate, which comprises a vertically placed stud. The stud is placed in the foundation and tied tightly with the steel bars in the foundation. It is characterized in that: The upper part of the stud is fixed by a first nut and an anchor plate, and a foundation bottom plate is installed below. Below the foundation bottom plate, it is fixed by a backing plate, a washer and at least one second nut. The connection between the first nut and the anchor plate is welded and fixed by spot welding. The lower part of the second nut is welded to the washer, the washer is welded to the backing plate, and the backing plate is welded and fixed to the foundation bottom plate.
2. The anchor bolt structure of a long screw rod with a nut anchor plate according to claim 1, wherein: There are two second nuts arranged vertically. The upper second nut is welded to the side of the stud, and the lower second nut is welded to the washer.
3. The anchor bolt structure of a long screw rod with a nut anchor plate according to claim 1, characterized in that: Both the first nut and the second nut are hexagon head nuts, and the spot welding position is at the middle position of the straight edge section of the nut hexagon head.
4. The anchor bolt structure of the long screw rod with nut anchor plate according to claim 3, characterized in that: The diameter of the spot welding is 4 mm, and the number of spot welds is at least 2, evenly distributed along the circumferential direction.
5. The anchor bolt structure of a long screw rod with a nut anchor plate according to claim 1, characterized in that: The materials of the screw rod and the nut are 20CrMo.
6. The anchor bolt structure of a long screw rod with a nut anchor plate according to claim 1, characterized in that: The materials of the anchor plate and the backing plate are high-strength low-alloy structural steel, and its model is Q355B.
7. The anchor bolt structure of a long screw rod with a nut anchor plate according to claim 1, characterized in that: The material of the washer is steel 200HV.