Ribbed steel bar joint fastening device for bridge engineering
Through the fastening device of ribbed steel joints, the tightening connection of steel bars is achieved by using semicircular steel sheets and studs, solving the problems of low welding efficiency and safety hazards, improving the efficiency and safety of bridge construction, and reducing material costs.
Patent Information
- Application Number
- CN202420020898.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-04
AI Technical Summary
The welding process of steel bar joints in bridge construction is low efficiency and has safety risks, and the special equipment for extruded cone sleeve locking devices is unsafe and costly, which limits its promotion and application.
A ribbed steel joint fastening device is used, which includes semicircular steel sheets, studs and screw holes. The steel bars are inserted into the inner grooves of the steel sheet and tightened by studs and nuts, avoiding the use of additional equipment.
It improves the connection efficiency of steel joints, reduces construction space requirements, enhances the safety of high-altitude operations, and can be manually implemented in a lack of conditions, saving materials.
Smart Images
Figure CN222251715U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of steel bar joint connection, and in particular relates to a ribbed steel bar joint fastening device used in bridge engineering and a method for connecting steel bars by using the joint fastening device. Background Art
[0002] With the advancement of my country's economic development and urbanization, highway bridge construction has developed rapidly. Large-span bridges across rivers, rivers and seas have emerged one after another, which has put forward higher requirements for bridge construction. In the work of bridge pile foundation and pier engineering, it is often necessary to connect the steel bar joints. The commonly used welding process for steel bar connection has problems such as low efficiency, the need for working surface, and safety risks in high-altitude operations; at the same time, the welding interface is prone to breakage, which can easily cause safety hazards.
[0003] In recent years, a squeeze cone sleeve locking type steel bar joint device has emerged. This device fixes the joint steel bars at both ends through the cone sleeve lock, and squeezes the nuts from both ends of the cone sleeve lock to the middle through special equipment to achieve the tightening effect. The use of special equipment has safety hazards and is not conducive to high-altitude operations; the joint device is complicated to make and the cost is high, which limits its promotion and application. Summary of the invention
[0004] The utility model aims to provide a ribbed steel bar joint fastening device for bridge engineering, which at least solves one of the above technical problems.
[0005] The technical solution adopted by the utility model is: a ribbed steel bar joint fastening device for bridge engineering, characterized in that: it comprises a semicircular steel sheet, a stud, and a screw hole, the interior of the semicircular steel sheet is hollow, a concave or convex insertion structure is radially arranged on the outer edge of the semicircular steel sheet, the inner diameter of the semicircular steel sheet is slightly smaller than the diameter of the steel bar, a groove is radially arranged inside the semicircular steel sheet that fits the protruding ribs of the steel bar, and 6 groups of symmetrical screw holes and studs are respectively arranged on the outer edges of both sides of the semicircular steel sheet.
[0006] The method for connecting steel bars using a ribbed steel bar joint fastening device comprises the following steps: (1) inserting bridge steel bars into both ends of a steel sheet; (2) aligning the protruding ribs of the steel bar with the inner grooves of the steel sheet; (3) inserting a stud into the side screw groove of the steel sheet, tightening one side to axially compress it, and using the tightening action of a nut to clamp the steel bar on the steel sheet to achieve the connection of the bridge steel bars.
[0007] In the utility model, the bridge engineering steel bar connection device has high joint efficiency and small construction space on the working surface, which is beneficial to the safety of high-altitude operations. It does not require additional electric mechanical equipment and can be implemented manually in an environment with insufficient conditions, while saving materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1Cross-section of the ribbed steel bar joint fastening device.
[0009] Figure 2 Front view of the ribbed steel bar joint fastening device.
[0010] Figure 3 Internal cross-section of the ribbed steel bar joint fastening device.
[0011] In the figure: 1 - side connecting steel bar; 2 - screw hole of joint steel sheet; 3 - upper steel sheet; 4 - lower steel sheet; 5 - internal groove of steel sheet; 6 - stud; 7 - concave part of edge of lower steel sheet; 8 - convex part of edge of upper steel sheet; 9 - joint of connecting steel bar. Implementation
[0012] The present invention is described in detail below in conjunction with specific implementation methods.
[0013] The utility model relates to a ribbed steel bar joint fastening device used in bridge engineering, comprising an upper steel sheet 3, a lower steel sheet 4 and a stud 6.
[0014] The upper steel sheet 3 and the lower steel sheet 4 can be spliced together to form a cylindrical structure, and a groove consistent with the protruding ribs of the steel bar is arranged on the inner side of the cylindrical structure so that the two can fit tightly.
[0015] Six threaded holes are respectively provided at the edge protrusion 8 of the upper steel sheet 3 and the edge concave portion 7 of the lower steel sheet 4 .
[0016] The radius of the upper steel sheet 3 and the lower steel sheet 4 is about 5 mm smaller than the radius of the connecting steel bar.
[0017] In this embodiment, the steel sheet 3, the steel sheet 4 and the stud 1 are all made of No. 45 steel.
[0018] Working principle: During the construction process, the protruding ribs of the joint steel bar 1 fit with the inner grooves of the lower steel sheet 4, and the upper steel sheet 3 fits with the lower steel sheet 4 to form a cylindrical shape. The stud is squeezed into the threaded hole 2. The extrusion of the stud on the steel sheet makes the inner groove of the steel sheet and the thread fit more firmly, thus achieving a stable connection of the steel bar joint.
[0019] It is understandable that the steel sheet, cone sleeve and nut may be made of other materials, such as iron, provided that the use requirements are met; the number of screw holes in the steel sheet is not limited to 6; the above may be set by those skilled in the art and will not be described in detail here.
[0020] The content of the utility model is not limited to the examples listed, and any equivalent changes made to the technical solution of the utility model by ordinary technicians in this field after reading the specification of the utility model are covered by the claims of the utility model.
Claims
1. A ribbed steel bar joint fastening device for bridge engineering, characterized in that: It includes a semicircular steel sheet, screw holes and studs. The interior of the semicircular steel sheet is hollow, and a concave or convex insertion structure is radially arranged on the outer edge of the semicircular steel sheet. The inner diameter of the semicircular steel sheet is slightly smaller than the diameter of the steel bar. A groove is radially arranged inside the semicircular steel sheet to fit the protruding ribs of the steel bar. Six groups of symmetrical screw holes and studs are respectively arranged on the outer edges of both sides of the semicircular steel sheet.