Anchoring part for grouting reinforcement
By improving the barb structure, the anchor adopts a forked barb and expansion plug design, which solves the problems of stress concentration and insufficient pull-out resistance of existing anchors, and achieves more efficient base fixation and seismic performance.
Patent Information
- Application Number
- CN202520548842.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The barbed structure of existing anchors is prone to stress concentration and insufficient pull-out resistance. They are also not effective in fixing complex base layers and are easily damaged under dynamic loads.
Design an anchor with a barbed bifurcation structure, in which the main barbs and side barbs are distributed in a staggered array, the length of the main barbs increases progressively, and the tips of the side barbs face the substrate. They are fixed by being embedded in a spiral pattern, combined with an expansion plug and an elastic pin, to form a multi-level anchoring point, which disperses stress and enhances pull-out resistance.
It improves the fixing capacity and pull-out resistance of anchors, adapts to complex base layers, reduces base layer damage, and enhances seismic performance and construction efficiency.
Smart Images
Figure CN223740394U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fastener technical field, concretely is a kind of anchor for grouting reinforcement. BACKGROUND
[0002] Anchor is the connecting device for fixing structure or equipment in base material, such as concrete, masonry, metal, its type is various, application scene is widely, fixed by the friction force generated by the expansion sleeve expansion in hole, it is suitable for hard base material such as concrete, masonry, for the connection of steel structure and concrete, with the effect of quick installation light load component, the anchor of the prior art is mostly used barb structure, and the traditional barb is mostly single-row distribution, stress concentrates in local, and it is easy to cause base layer damage, and direction is single, barb is only distributed along axial direction, lack of transverse grip force, limited to pullout force, too sharp barb is easy to break under dynamic load, strong friction dependence, rely on the friction force of thread and hole wall, easy to slip in loose base layer. SUMMARY
[0003] The utility model discloses an anchor for grouting reinforcement to overcome the insufficient of prior art, by improving barb structure, barb bifurcation structure disperses the tension to 5~8 anchor points, avoid stress concentration, improve the fixing capacity, pullout force and anti-seismic performance of anchor, and be compatible with complex base layer and efficient construction demand simultaneously.
[0004] To achieve the above object, a kind of anchor for grouting reinforcement is designed, including wheel disc, the wheel disc top is welded with anchor rod one end, anchor rod is axially distributed with barb, barb includes main barb, side barb, main barb and side barb are distributed in bifurcation staggered array, the other end of anchor rod is equipped with expansion plug, the top of expansion plug is equipped with screw sleeve.
[0005] The anchor rod surface is provided with guide groove and spiral trace.
[0006] The main barb is axially distributed along the anchor rod main body, and the main barb is fixed by embedding in the spiral trace, the length of the main barb increases from the front to the rear along the anchor rod, and the tip of the main barb faces the direction opposite to the insertion of the anchor rod into the base material.
[0007] The side barb is axially distributed along the anchor rod main body, and the tip of the side barb faces the direction of the insertion of the anchor rod into the base material.
[0008] The number of the main barb and the side barb decreases from the front end to the rear end along the anchor rod.
[0009] Screw holes are provided in the screw sleeve, anchor rod and expansion plug for the screw to pass through.
[0010] The guide groove is embedded with an elastic pin, and one end of the side barb is connected to the elastic pin.
[0011] Compared with the prior art, the main barb and the side barb with the multi-stage anchoring point can disperse stress, the barb root is thick and the end is thin, the main barb tip is inclined forward to increase the resistance to pullout, the side barb can resist the rotating shearing force, the front end is dense and the rear end is sparse on the upper end of the anchor rod, and the attenuation law of the stress in the drilling hole can be matched. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 It is a conventional schematic view of the utility model.
[0013] Fig. 2 It is an installation schematic view of the utility model.
[0014] Fig. 3 It is a perspective view of the utility model after installation.
[0015] Fig. 4 It is a local enlarged view of the side barb.
[0016] Referring to Figs. 1 to 4 , 1 is a wheel disc, 2 is an anchor rod, 3 is a main barb, 4 is a side barb, 5 is an expansion plug, 6 is a screw sleeve, 7 is a screw, 8 is a guide groove, 9 is an elastic pin, and 10 is a spiral thread. DETAILED DESCRIPTION
[0017] The utility model will be further described below according to the drawings.
[0018] As shown in Figs. 1 to 4 , the anchor rod 2 one end is welded above the wheel disc 1, the barbs are distributed axially on the anchor rod 2, the barbs include the main barb 3 and the side barb 4, the main barb 3 and the side barb 4 are distributed in a bifurcated staggered array, the other end of the anchor rod 2 is sleeved with the expansion plug 5, the top end of the expansion plug 5 is sleeved with the screw sleeve 6, the wheel disc 1 is located at the overall front end, belongs to the position where the anchoring member does not insert the base material, mechanical interlocking is formed between the wheel disc 1 and the base material through rotation extrusion, and the pullout resistance is provided.
[0019] The anchor rod 2 surface is provided with the guide groove 8 and the spiral thread 10.
[0020] The main barb 3 is distributed along the anchor rod 2 main body axis, the main barb 3 is fixed in the spiral thread 10 through embedding, the length of the main barb 3 increases from the front part to the rear part along the anchor rod 2, the main barb 3 tip is directed to the direction opposite to the anchor rod 2 insertion into the base material, and forms a 30 ° angle with the anchor rod axis, the main barb 3 is used to increase the stability of anchoring, and can ensure the pullout capacity when being stressed.
[0021] The side barb 4 is distributed along the anchor rod 2 main body axis, the side barb 4 tip is directed to the direction of the anchor rod 2 insertion into the base material, the side barb 4 forms a 60 ° angle with the anchor rod axis, when the anchor rod is subjected to the outward torque, the side barb 4 is clamped into the base layer, the angle of the side barb 4 generates a tangential component under the action of the rotating force, and the anchor rod 2 is prevented from rotating loose in the base material.
[0022] The number of the main barbs 3 and the side barbs 4 decreases from the front end to the rear end of the anchor rod, and the number of the main barbs 3 and the side barbs 4 is more dense near the disc and is more sparse away from the disc.
[0023] The screw sleeve 6, the anchor rod 2 and the expansion plug 5 are provided with screw holes for the screw 7 to pass through.
[0024] The guide groove 8 is embedded with the elastic pin 9, the elastic pin 9 is connected to one end of the side barb 4, the side barb 4 is automatically compressed and inserted into the guide groove 8 when being screwed, the installation resistance is reduced, and the damage of the sharp point to the hole wall of the base layer is avoided.
[0025] The specific operation process of the utility model is that the technical personnel inserts the screw sleeve 6, the expansion plug 5 and the anchor rod 2 into the base material in sequence by holding the wheel disc 1, at this time, the side barb 4 is extruded into the guide groove 8, the elastic pin 9 is continuously extruded, the main barb 3 is contracted in the axial direction, until one side of the wheel disc 1 is close to the base material, the screw 7 is screwed into the anchor inside, until the screw 7 touches the bottom of the screw sleeve 6, at this time, the expansion plug 5 is inserted into the screw 7 and is extruded outwardly due to the internal pressure, and the fixing effect between the anchor and the base material is achieved.
Claims
1. An anchor for use in grout injection reinforcement comprising a wheel, characterised in that: The wheel disc (1) is welded with an anchor rod (2) at one end, the anchor rod (2) is axially distributed with barbs, the barbs include main barbs (3) and side barbs (4), the main barbs (3) and the side barbs (4) are distributed in a forked staggered array, the other end of the anchor rod (2) is sleeved with an expansion plug (5), the top end of the expansion plug (5) is sleeved with a screw sleeve (6).
2. An anchoring element for use in grouting reinforcement according to claim 1, characterized in that: The surface of the anchor rod (2) is provided with a guide groove (8) and a spiral thread (10).
3. The anchoring member for grouting reinforcement according to claim 1, wherein: The main barbs (3) are distributed along the main body of the anchor rod (2) in an axial direction, the main barbs (3) are fixed in the spiral thread (10), the length of the main barbs (3) increases from the front to the rear along the anchor rod (2), and the tip of the main barbs (3) is inserted into the base material in the opposite direction of the anchor rod (2).
4. The anchoring device for grouting reinforcement according to claim 1, characterized in that: The side barbs (4) are distributed along the main body of the anchor rod (2) in an axial direction, and the tips of the side barbs (4) are inserted into the base material in the direction of the anchor rod (2).
5. The anchoring member for use in grouting reinforcement according to claim 1, characterized in that: The number of the main barbs (3) and the side barbs (4) decreases from the front end to the rear end of the anchor rod.
6. The anchoring device for grouting reinforcement according to claim 1, characterized in that: Screw holes are formed in the screw sleeve (6), the anchor rod (2) and the expansion plug (5) for the screw (7) to pass through.
7. The anchoring device for grouting reinforcement according to claim 2, characterized in that: The guide groove (8) is embedded with an elastic pin (9), and one end of the elastic pin (9) is connected with the side barb (4).