A kind of steel bar mortar anchor guide bracket

Abstract

A steel mortar anchor guide bracket includes an inner support steel bar and three longitudinal steel bars. The inner support steel bar is bent from a single steel bar to form a triangle with three concave corners. The two ends of the longitudinal steel bar are fixed to the anchor steel bar. The longitudinal steel bar is bent at an obtuse angle, and the bend is fixed to the concave part of the inner support steel bar. The guide bracket of the present invention adopts several triangular and approximately triangular structures. The longitudinal steel bar and the inner support steel bar are matched. The structure is simple and easy to manufacture on site. The overall stability is good, and it can play a good guiding role for the anchor steel bar.

Description

Technical Field

[0001] The invention relates to an anchor rod center guide bracket structure, in particular to a steel bar mortar anchor rod center guide bracket structure. Background Art

[0002] Reinforced mortar anchors are widely used in slope support. Before injecting mortar into the anchor, a guide bracket is required when placing the anchor main bar (rebar) into the drilled hole to ensure that the main bar is located in the middle of the anchor body after grouting. The structure of the guide bracket is unstable, which may cause the main bar to deviate seriously from the center position after grouting, affecting the anchoring effect; at the same time, many types of guide brackets are prefabricated parts with sheet-like cross-sections, which are difficult to make on site, and the sheet-like structure is also easy to affect the grouting effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a guiding bracket for reinforced mortar anchor rods under conditions of hard soil, which has a simple structure, good overall stability, can play a good guiding role for the main reinforcement of the anchor rod, and is convenient for on-site manufacture.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a steel mortar anchor guide bracket, including an inner supporting steel bar and three longitudinal steel bars, the inner supporting steel bar is bent by a single steel bar to form an approximate triangle with three concave corners, the two ends of the longitudinal steel bar are fixed on the anchor steel bar, the longitudinal steel bar is bent at an obtuse angle, and the bend is fixed at the concave part of the inner supporting steel bar.

[0005] Furthermore, the contact positions of the inner support steel bars and the longitudinal steel bars are connected by iron wires or steel wires, and the two ends of the longitudinal steel bars are fastened to the anchor steel bars by iron wires or steel wires.

[0006] Furthermore, the outer sides of the inner supporting steel bars are extended and intersected to form a regular triangle, and the lowest position of the inner concave part is on the inner extension line of each corner.

[0007] Furthermore, the inner concave part of the inner support steel bar is in an obtuse angle shape.

[0008] Furthermore, the longitudinal reinforcement is fastened to the outside of the inner support reinforcement.

[0009] The centering support of the present invention adopts several triangular or approximately triangular structures, and forms a relatively stable support body through the cooperation of longitudinal steel bars and internal support steel bars, and has a simple structure and is easy to manufacture on site; it has good overall stability and can play a good guiding role for the anchor rod steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0011] Figure 2 for Figure 1 AA section view.

[0012] In the figure: 1. Internal support steel bars, 2. Longitudinal steel bars, 3. Anchor steel bars, 4. Anchor mortar body, 5. Contact surface between anchor and rock and soil. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-2 As shown, this embodiment includes an inner supporting steel bar 1 and three longitudinal steel bars 2. The inner supporting steel bar 1 is formed by bending a single steel bar to form an approximate triangle with three concave corners. The outer sides of the inner supporting steel bar 1 are extended and intersected to form a regular triangle. The concave part of the inner supporting steel bar 1 is obtuse-angled. The lowest position of the concave part on the inner supporting steel bar 1 is on the inner extension line of each corner. The two ends of the longitudinal steel bar 2 are fixed on the anchor steel bar 3. The longitudinal steel bar 2 is bent at an obtuse angle, and the bent part of the longitudinal steel bar 2 is fixed on the concave part of the inner supporting steel bar 1.

[0015] In this embodiment, the contact position between the inner support steel bar 1 and the longitudinal steel bar 2 is connected by iron wire, the longitudinal steel bar 2 is fastened to the outside of the inner support steel bar 1, and the two ends of the longitudinal steel bar 2 are fastened to the anchor steel bar 3 by iron wire.

[0016] During the construction of the steel bar mortar anchor, after the drilling is completed, according to the inner diameter of the borehole (anchor diameter), a guide bracket is set at a certain distance on the anchor bar 3, and the anchor bar passes through the inner support bar 1 of the guide bracket, and the longitudinal steel bar 2 of the guide bracket is placed in the groove of the inner support bar 1, and the two ends are fixed on the anchor bar 3. The inner support bar 1 of the guide bracket and the longitudinal steel bar 2 are fastened by wire at the contact position. Three longitudinal steel bars 2 are set in each guide bracket, and the two ends of the longitudinal steel bars 2 are fastened to the anchor bar 3 by wire. The anchor bar 3 with the guide bracket is placed in the drilled hole and then mortar is injected to form an anchor mortar body 4, which can maximize the guarantee that the anchor bar 3 is located in the center of the anchor body.

[0017] The concave part of the inner support steel bar 1 plays a good role in fixing the longitudinal steel bar 2, effectively preventing the longitudinal steel bar 2 from shifting to the sides; at the same time, the transition position between the three straight sides of the inner support steel bar 1 and the concave part, which is approximately triangular, is close to the contact surface 5 between the anchor rod and the rock and soil body, ensuring that the anchor rod steel bar 3 is centered, and the longitudinal steel bar 2 of the guide bracket can prevent the inner support steel bar 1 from shifting in the longitudinal direction. The rhombus formed by the inner support steel bar 1 and the longitudinal steel bar 2 facilitates the placement of the anchor rod steel bar 3 in the drilled hole.

[0018] Those skilled in the art may make various modifications and variations to the present invention. If these modifications and variations are within the scope of the claims of the present invention and their equivalents, then these modifications and variations are also within the protection scope of the present invention.

[0019] The contents not described in detail in the specification are prior art known to those skilled in the art.

Claims

1. A steel mortar anchor guide bracket, characterized in that: It includes inner supporting steel bars and three longitudinal steel bars. The inner supporting steel bars are bent from a single steel bar to form an approximate triangle with three concave corners. The two ends of the longitudinal steel bars are fixed on the anchor steel bars. The longitudinal steel bars are bent at an obtuse angle, and the bending part is fixed at the concave part of the inner supporting steel bars.

2. The steel bar mortar anchor guide bracket according to claim 1 is characterized in that: The contact position between the inner support steel bar and the longitudinal steel bar is connected by iron wire or steel wire, and the two ends of the longitudinal steel bar are fastened to the anchor steel bar by iron wire or steel wire.

3. The steel mortar anchor guide bracket according to claim 1 or 2, characterized in that: The outer sides of the inner supporting steel bars are extended and intersected to form an equilateral triangle, and the lowest position of the inner concave part is on the inner extension line of each corner.

4. The steel mortar anchor guide bracket according to claim 1 or 2, characterized in that: The concave part of the internal supporting steel bar is obtuse-angled.

5. The steel bar mortar anchor guide bracket according to claim 3 is characterized in that: The concave part of the internal support steel bar is obtuse-angled.

6. The steel bar mortar anchor guide bracket according to claim 1 or 2, characterized in that: The longitudinal reinforcement is fastened to the outside of the inner support reinforcement.

7. The steel bar mortar anchor guide bracket according to claim 3 is characterized in that: The longitudinal reinforcement is fastened to the outside of the inner support reinforcement.

8. The steel bar mortar anchor guide bracket according to claim 4, characterized in that: The longitudinal reinforcement is fastened to the outside of the inner support reinforcement.

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