Prestress finish rolling twisted steel anti-floating anchor rod

Abstract

The utility model relates to the field of buildings, in particular to a prestress finish rolling twisted steel anti-floating anchor rod, a mounting seat is fixedly mounted at the lower end of an anchor rod body, a plurality of spokes which are uniformly arranged at intervals in the circumferential direction of the anchor rod body are arranged on the outer side of the mounting seat, one end of each spoke is hinged to the mounting seat, and the other end of each spoke is hinged to the anchor rod body. A strapping tape used for limiting unfolding of the spokes is arranged on the outer sides of the spokes, a movable plate is vertically installed on the installation base in a sliding mode, wedge-shaped plates matched with the movable plate are fixedly installed on the spokes, the movable plate acts on the wedge-shaped plates and pushes the spokes to rotate towards the side away from the anchor rod body when moving upwards, and the strapping tape is broken by the spokes. And the anchor rod body rotates downwards and unfolds under the action of self gravity after being separated from the constraint of the strapping tape.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to a prestressed precision-rolled threaded steel bar anti-floating anchor rod. Background Art

[0002] Anti-floating anchor rods are a type of anti-floating measure for underground structures in construction projects. Anti-floating anchor rods refer to structural components that are set up to resist the upward displacement of buildings above them. They are related to the height and changes of groundwater levels and are in the opposite direction of the force applied to compression piles. They are currently the most commonly used form of anchor rods.

[0003] In the prior art, the invention patent with application number CN201510280813.5 discloses an end-enlarged anti-floating anchor rod, comprising an anchor rod and an anchor head arranged at the bottom of the anchor rod, an end-enlarged structure is arranged on the anchor head, and the end-enlarged structure comprises a bottom plate and a connecting plate evenly arranged in a ring shape, a connecting hole is provided on the connecting plate, and an enlarged skeleton with one end hingedly connected to the connecting hole is provided on the connecting hole. By putting a sleeve on the anchor rod and applying pressure from top to bottom, the enlarged skeleton is driven to rotate and unfold around the connecting hole, which can improve the tensile strength.

[0004] However, since the anti-floating anchor rod needs to expand the skeleton with the help of a sleeve and then take out the sleeve during grouting, the construction steps are complicated and the construction efficiency is reduced. Utility Model Content

[0005] The purpose of the utility model is to provide a prestressed precision-rolled threaded steel bar anti-floating anchor rod, which is more convenient to unfold the spokes, so as to solve the defects proposed in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prestressed precision-rolled threaded steel bar anti-floating anchor rod, comprising an anchor rod body, a mounting seat being fixedly installed at the lower end of the anchor rod body, a plurality of spokes being arranged evenly spaced around the circumference of the anchor rod body being provided on the outer side of the mounting seat, one end of the spoke being hinged on the mounting seat, the spoke being rotated upward toward a side close to the anchor rod body for retraction or the spoke being rotated downward toward a side away from the anchor rod body for expansion, a binding belt being provided on the outer sides of the plurality of spokes for limiting the expansion of the spokes; a movable plate being vertically slidably installed on the mounting seat, the movable plate being located on the inner sides of the plurality of spokes, a wedge plate matching the movable plate being fixedly installed on the spoke, the movable plate acting on the wedge plate and pushing the spoke to rotate toward a side away from the anchor rod body when the movable plate moves up, and a linkage mechanism being provided on the anchor rod body for driving the movable plate to move.

[0008] As a preferred technical solution, the mounting seat is provided with a limiting component for limiting the downward movement of the movable plate. When the movable plate abuts against the top of the limiting component, the binding belt makes the spoke abut against the outer wall of the movable plate, and the free end of the spoke is inclined to the side away from the anchor rod body.

[0009] As a preferred technical solution, the linkage mechanism includes a connecting column fixedly mounted on the movable plate, the connecting column extending downward away from one end of the movable plate and fixedly mounted with a push plate, when the push plate contacts the bottom wall of the anchor hole, the movable plate moves upward relative to the anchor rod body and causes the spokes to break free from the binding belt and unfold.

[0010] As a preferred technical solution, the anchor rod body is a precision-rolled threaded steel bar anti-floating anchor rod.

[0011] As a preferred technical solution, a plurality of anchor locators are evenly and fixedly installed on the anchor body above the mounting seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Place the anchor body in the anchor hole. When the push plate contacts the bottom wall of the anchor hole, continue to press the anchor body downward, so that the push plate, the connecting column and the movable plate move upward relative to the anchor body, and then the movable plate acts on the wedge plate on the spokes and pushes the spokes to rotate to the side away from the anchor body. Multiple spokes break the binding belt, and after the anchor body is freed from the binding belt, it rotates downward under the action of its own gravity and unfolds, making the construction more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of

[0017] Figure 3 It is a structural schematic diagram of a mounting base of an embodiment of the utility model;

[0018] Figure 4 It is a structural schematic diagram of a movable plate in an embodiment of the utility model;

[0019] Figure 5 yes Figure 2 A cross-sectional schematic diagram of

[0020] Figure 6 It is a structural schematic diagram of an anchor positioner according to an embodiment of the utility model;

[0021] Figure 7 It is a schematic diagram of the spokes of the embodiment of the utility model when they are unfolded.

[0022] In the figure: 1-anchor body; 2-mounting seat; 3-sleeve; 4-mounting plate; 5-spoke; 6-fixing frame; 7-hinge shaft; 8-binding belt; 9-groove; 10-movable plate; 11-protrusion; 12-wedge plate; 13-connecting column; 14-push plate; 15-anchor hole; 16-anchor locator. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 7 As shown, a prestressed precision-rolled threaded steel bar anti-floating anchor comprises an anchor body 1. In this embodiment, the anchor body 1 is a precision-rolled threaded steel bar anti-floating anchor.

[0025] like Figure 2 and Figure 3 As shown, a mounting seat 2 is fixedly installed at the lower end of the anchor body 1, and the mounting seat 2 includes a sleeve 3. The sleeve 3 is connected to the anchor body 1 by threading or welding, and a circular mounting plate 4 is integrally formed on the outer side of the lower end of the sleeve 3; a plurality of spokes 5 are arranged on the outer side of the sleeve 3 and are evenly spaced around the circumference of the anchor body 1, and one end of the spoke 5 is hinged on the mounting seat 2. Specifically, a fixing frame 6 corresponding to the spoke 5 is welded on the top of the mounting plate 4, and the fixing frame 6 includes two vertical plates arranged opposite to each other, and a horizontally extending hinge shaft 7 is embedded in the two vertical plates. A mounting hole matching the hinge shaft 7 is provided at one end of the spoke 5, and the spoke 5 rotates around the hinge shaft 7 upward to the side close to the anchor body 1 to be gathered, or the spoke 5 rotates around the hinge shaft 7 downward to the side away from the anchor body 1 to be unfolded.

[0026] A strapping belt 8 for limiting the expansion of the spokes is provided on the outside of the multiple spokes 5. In the initial state, the multiple spokes 5 are in an upwardly retracted state, and the strapping belt 8 is annularly sleeved on the outside of the multiple spokes 5; in order to prevent the strapping belt 8 from falling off, a groove 9 for limiting the sliding of the strapping belt 8 along the spoke 5 is provided on the side of the spoke 5 away from the anchor body 1. The strapping belt 8 passes through the grooves 9 of the multiple spokes 5 in turn to prevent the strapping belt 8 from slipping and causing the spokes 5 to expand accidentally; a movable plate 10 is vertically slidably sleeved on the outside of the sleeve 3. The movable plate 10 is circular and coaxially arranged with the anchor body 1. The movable plate 10 is circular and coaxially arranged with the anchor body 1. 0 is located on the inner side of the plurality of spokes 5, a limiting component for limiting the downward movement of the movable plate 10 is provided on the sleeve 3, and the limiting component is a protrusion 11 integrally formed on the outer wall of the sleeve 3, and the protrusion 11 is located below the movable plate 10. In the initial state, the movable plate 10 abuts against the top of the protrusion 11, and the binding belt 8 binds the plurality of spokes 5 inwardly so that the spokes 5 abut against the outer wall of the movable plate 10. At this time, the free ends of the spokes 5 are inclined toward the side away from the anchor body 1, so that the spokes 5 can rotate downward and unfold under the action of their own gravity after the binding belt 8 falls off.

[0027] A wedge plate 12 matching the movable plate 10 is welded to the side of the spoke 5 close to the anchor body 1. The wedge plate 12 is a triangle that gradually protrudes toward the free end of the spoke 5 toward the side close to the anchor body 1. In the initial state, the movable plate 10 is against the top of the protruding portion 11. At this time, the wedge plate 12 is located above the movable plate 10, and the projection of the edge of the wedge plate 12 in the vertical direction is located on the wedge plate 12; when the movable plate 10 moves up, the edge of the movable plate 10 contacts the wedge plate 12 and pushes the spoke 5 to rotate away from the anchor body 1. Multiple spokes 5 expand and break the binding belt 8. After the spoke 5 is freed from the binding belt 8, it rotates downward under the action of its own gravity and expands. The pull-out resistance of the anchor body 1 is improved by multiple spokes 5.

[0028] like Figure 2 and Figure 4 As shown, the anchor body 1 is provided with a linkage mechanism for driving the movable plate 10 to move, and the linkage mechanism includes a connecting column 13 fixedly installed on the movable plate 10 by bolts. A plurality of connecting columns 13 are evenly spaced around the axis of the movable plate 10, and the connecting column 13 extends downward at one end away from the movable plate 10. The connecting column 13 is vertically slidably installed on the mounting plate 4. The mounting plate 4 is provided with guide holes corresponding to the connecting columns 13 one by one, thereby supporting and guiding the movable plate 10. The lower ends of the plurality of connecting columns 13 are fixedly installed with the same push plate 14 by bolts, and the push plate 14 is annular. When the movable plate 10 is against the top of the protrusion 11, the push plate 14 extends out of the lower end of the anchor body 1 by a certain distance.

[0029] When installing the anchor rod body 1, the anchor rod body 1 is placed in the anchor hole 15, and the bottom of the anchor hole 15 is expanded. When the push plate 14 contacts the bottom wall of the anchor hole 15, the anchor rod body 1 is continuously pressed downward, so that the push plate 14, the connecting column 13 and the movable plate 10 move upward relative to the anchor rod body 1, and then the movable plate 10 pushes the spoke 5 to break the binding belt 8 and unfold it in the expanded hole at the bottom of the anchor hole 15. Figure 7 shown.

[0030] like Figure 1 and Figure 6 As shown, a plurality of anchor locators 16 are evenly spaced and fixedly installed on the anchor body 1 located above the mounting seat 2. The anchor locators 16 are connected to the anchor body 1 by threads or by welding. The anchor locators 16 are circular in shape matching the upper end diameter of the anchor hole 15, and a reserved groove for slurry circulation is provided on the anchor locator 16 to prevent the anchor body 1 from tilting.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A prestressed precision-rolled threaded steel bar anti-floating anchor, characterized in that: The invention comprises an anchor body, a mounting seat being fixedly mounted on the lower end of the anchor body, a plurality of spokes being arranged evenly spaced around the circumference of the anchor body being arranged on the outer side of the mounting seat, one end of the spoke being hinged on the mounting seat, the spokes being rotated upward toward a side close to the anchor body for retraction or being rotated downward toward a side away from the anchor body for expansion, a binding belt for limiting the expansion of the spokes being arranged on the outer sides of the plurality of spokes; a movable plate being vertically slidably mounted on the mounting seat, the movable plate being located on the inner side of the plurality of spokes, a wedge plate matching the movable plate being fixedly mounted on the spokes, the movable plate acting on the wedge plate and pushing the spokes to rotate toward a side away from the anchor body when moving up, and a linkage mechanism for driving the movable plate to move is arranged on the anchor body.

2. A prestressed, precision-rolled, threaded steel bar anti-floating anchor rod as claimed in claim 1, characterized in that: The mounting seat is provided with a limiting component for limiting the downward movement of the movable plate. When the movable plate abuts against the upper part of the limiting component, the binding belt makes the spoke abut against the outer wall of the movable plate, and the free end of the spoke is inclined to the side away from the anchor rod body.

3. The prestressed, precision-rolled, threaded steel bar anti-floating anchor rod according to claim 1, characterized in that: The linkage mechanism includes a connecting column fixedly mounted on the movable plate, wherein one end of the connecting column away from the movable plate extends downward and is fixedly mounted with a push plate. When the push plate contacts the bottom wall of the anchor hole, the movable plate moves upward relative to the anchor rod body and enables the spokes to break free from the binding belt and unfold.

4. The prestressed precision-rolled threaded steel bar anti-floating anchor rod according to claim 1, characterized in that: The anchor rod body is a precision-rolled threaded steel bar anti-floating anchor rod.

5. The prestressed precision-rolled threaded steel bar anti-floating anchor rod according to claim 1, characterized in that: A plurality of anchor positioners are evenly and fixedly mounted on the anchor body above the mounting seat.

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