Finish-rolled deformed steel bar nut screwing device for deeply-buried anchor
By designing a precision-rolled rebar nut screwing device for deep buried anchors, including a tensioning tube and a screwing sleeve, the problem of low efficiency of traditional nut screwing methods is solved, achieving more efficient construction and higher Quality nut twisting.
Patent Information
- Application Number
- CN202421053551.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In deep buried anchor construction, the traditional nut screwing method is inefficient, especially when the deep buried anchor depth is large, construction is inconvenient, which affects the prestressed construction efficiency.
A precision-rolled rebar nut screwing device including a tensioning barrel and a screwing sleeve is designed. The screwing sleeve is located in the tensioning barrel. The middle hole matches the nut. The barrel is equipped with a toggle column. Through the tensioning The barrel covers the screw sleeve, and the toggle column is used to rotate the screw sleeve to screw the nut.
This device improves the construction efficiency of nut screwing in deeply buried anchors, reduces losses during prestressed construction, improves the quality of nut screwing, and solves the problem of inconvenient construction using traditional methods when the depth of deep buried anchors is large.
Smart Images
Figure CN222371531U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of construction engineering, and in particular relates to a finishing rolled threaded steel nut screwing device for deep buried anchors. Background Art
[0002] Deep-buried anchor-during concrete prestressing construction, the tensioning end anchor can be placed in the deep-buried anchor box, which is convenient for construction and has a beautiful appearance after anchor sealing. During the construction of fine-rolled threaded steel prestressing, the fine-rolled threaded steel is used as prestressing tendons. After each tensioning of the jack, the nut of the fine-rolled threaded steel in the deep-buried anchor needs to be tightened in time. Tightening the nut has two functions: 1. Locking the tension applied by the jack; 2. Unloading the jack, removing the jack or continuing the oil return tensioning. When using a deep-buried anchor structure, how to quickly screw the fine-rolled threaded steel nut directly restricts the efficiency of prestressing construction. The traditional way to screw the nut is to use a small tool such as a special bending wrench to extend into the deep-buried anchor box. After each tensioning of the jack, the nut is screwed with a tool. The current problem with this method is that when the depth of the deep-buried anchor is large, the construction is inconvenient and the efficiency is low. Summary of the invention
[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a finishing rolled threaded steel nut screwing device for deep buried anchors.
[0004] The present invention is achieved through the following technical solutions:
[0005] A device for tightening a fine-rolled threaded steel nut for a deep-buried anchor comprises a tensioning cylinder and a tightening sleeve, wherein the tightening sleeve is located inside the tensioning cylinder; one end of the tensioning cylinder is an open end and the other end is a closed end, wherein a fine-rolled threaded steel outlet is provided in the middle of the closed end, and two operating notches are symmetrically provided on the side of the cylinder body at the open end of the tensioning cylinder; the middle hole of the tightening sleeve matches the nut, and a plurality of toggle columns are evenly provided outwardly on the cylinder body at one end of the tightening sleeve.
[0006] Preferably, a stiffening plate is welded to the outer periphery of the tensioning cylinder, and the stiffening plate is flush with the end surface of the opening end of the tensioning cylinder.
[0007] Preferably, the middle hole is a hexagonal hole.
[0008] The present invention produces a new device for screwing fine-rolled threaded steel nuts for deep-buried anchors, which solves the difficulty in screwing fine-rolled threaded steel nuts in deep-buried anchors during prestressed construction. The device is convenient for construction, greatly improves construction efficiency, enhances nut screwing quality, and reduces prestress loss. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the combined structure of the tensioning cylinder and the twisting sleeve of this embodiment;
[0010] Figure 2This is a schematic diagram of the tensioning tube structure of this embodiment;
[0011] Figure 3 This is a schematic diagram of the structure of the tensioning tube at another angle of this embodiment;
[0012] Figure 4 This is a schematic diagram of the structure of the screw sleeve in this embodiment.
[0013] In the figure, 1 is a stiffening plate, 2 is an operating notch, 3 is an outlet for fine-rolled threaded steel bars, 4 is an intermediate hole, 5 is a screw sleeve, 6 is a toggle column, and 7 is a tensioning cylinder. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0015] This embodiment includes a tensioning tube 7 and a screwing sleeve 5 used together. The screwing sleeve 5 can be placed in the tensioning tube 7. The screwing sleeve 5 is used to rotate the nut, and the tensioning tube 7 is used for jack tensioning. One end of the tensioning tube 7 is an open end and the other end is a closed end. A fine-rolled threaded steel outlet 3 is provided in the middle of the closed end. The fine-rolled threaded steel outlet 3 is used to pass the fine-rolled threaded steel, so as to perform jack tensioning. Two operating notches 2 are symmetrically arranged on the body of the tensioning tube 7 on one side of the open end. The operating notch 2 is an operating window for the screwing sleeve 5. In order to further strengthen the strength of the tensioning tube 7, it is preferred to weld a stiffening plate 1 on the outer periphery of the tensioning tube 7. In this embodiment, four stiffening plates 1 are welded on the outer periphery of the tensioning tube 7, and the stiffening plates 1 are flush with the end surface of the open end of the tensioning tube 7.
[0016] The screw sleeve 5 is a hollow cylinder with two ends open. The middle hole 4 of the screw sleeve 5 matches the nut. The screw sleeve 5 is used to screw the nut. Generally, the nut of the fine-rolled threaded steel is a hexagonal nut. Therefore, the middle hole 4 of the screw sleeve 5 in this embodiment is a hexagonal plum blossom hole. A plurality of toggle posts 6 are evenly arranged outward on the barrel at one end of the screw sleeve 5. The toggle posts 6 are used to rotate the screw sleeve 5. The toggle posts 6 are welded to the screw sleeve 5.
[0017] When in use, the screwing sleeve 5 is extended into the deep-buried anchor and then sleeved on the nut, with the toggle column 6 end of the screwing sleeve 5 facing outward and the end of the toggle column 6 located on the outside of the concrete surface. The screwing sleeve 5 is then sleeved with the tensioning cylinder 7, which does not contact the screwing sleeve 5. The tensioning cylinder 7 is located on the outside of the concrete surface, so that the open end face of the tensioning cylinder 7 is pressed against the concrete surface, and the fine-rolled threaded steel bar passes through the fine-rolled threaded steel bar outlet 3 of the tensioning cylinder 7 outward. A jack is installed at the closed end of the tensioning cylinder 7 for tensioning, and the sleeve 5 is screwed by operating the notch 2, thereby screwing the nut inside, applying torque to the nut, and locking the tension applied by the jack.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A device for screwing a finely rolled threaded steel nut for a deep-buried anchor, characterized in that: The invention comprises a tensioning cylinder (7) and a screwing sleeve (5), wherein the screwing sleeve (5) is located inside the tensioning cylinder (7); one end of the tensioning cylinder (7) is an open end and the other end is a closed end, wherein a fine-rolled threaded steel outlet (3) is provided in the middle of the closed end, and two operating notches (2) are symmetrically provided on the side of the cylinder body at the open end of the tensioning cylinder (7); the middle hole (4) of the screwing sleeve (5) matches a nut, and a plurality of toggle posts (6) are evenly provided outwardly on one end of the cylinder body of the screwing sleeve (5).
2. The device for screwing a finely rolled threaded steel nut for a deep-buried anchor according to claim 1, characterized in that: A stiffening plate (1) is welded to the outer periphery of the tensioning tube (7), and the stiffening plate (1) is flush with the end surface of the opening end of the tensioning tube (7).
3. The device for screwing a finely rolled threaded steel nut for a deep-buried anchor according to claim 1, characterized in that: The middle hole (4) is a hexagonal plum blossom hole.