Self-anchored anti-floating vibration anchor rod

Abstract

The utility model relates to a self-anchored anti-floating vibration anchor rod, which is characterized in that three steel strands are arranged in a triangular shape, a guide part arranged at the lower part of the steel strand anchor rod consists of a guide bracket, an anti-floating bearing block and a bearing plate, the anti-floating bearing block is arranged at the central position of one side of the bearing plate, the guide bracket is provided with a soil discharge groove, and the soil discharge groove is provided with a soil discharge hole. The self-anchored anti-floating vibration anchor rod further comprises a vibration sleeve, the vibration sleeve is of a squirrel-cage structure and is arranged outside the steel strand anchor rod in a sleeving mode, a limiting buckle and a matching groove are arranged at the bottom of the vibration sleeve, a vibration ring is arranged on the lower portion of the vibration sleeve, a vibration elastic piece is arranged on the vibration ring, and the limiting buckle and the matching groove are matched with each other. The steel strand anchor rod has the advantages that the steel strand is prevented from floating and drifting while vertical guiding is conducted, the matching degree of the steel strand anchor rod and an anchor rod hole is improved, the floating resistance is improved, meanwhile, bubbles in mortar are shocked out through the vibration elastic pieces, grouting is sufficient, the mortar is evenly distributed, the grouting quality is improved, and the tolerance strength of underground engineering is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-floating vibration anchor rods, in particular to a self-anchoring anti-floating vibration anchor rod. Background Art

[0002] Anchor rod is a kind of supporting material that enhances the stability of underground projects by prestressing or increasing the friction of the stratum. Steel strand anchor rod uses steel strand as the anchor rod body, and enhances the stability of underground projects by stretching and fixing the steel strand. Traditional steel strand anchor rods have poor anti-floating properties due to design reasons, and the floating stability of anchor rods is poor during grouting. Stretching and fixing the steel strand is time-consuming and labor-intensive, the grouting effect is not good, the grouting quality is poor, and there is a high probability of hollowing and air holes after the mortar solidifies, which affects the stability and bearing capacity of the underground structure. Summary of the invention

[0003] In order to solve the technical problems of poor anti-floating property and poor grouting quality of traditional steel strand anchor rods, the utility model provides a self-anchoring anti-floating vibration anchor rod, in which a guide portion is arranged at the bottom of the steel strand anchor rod, and the guide portion is cooperated with and connected to a squirrel-cage vibration sleeve. The guide portion improves the anti-floating property of the steel strand anchor rod, and a vibration motor on the upper part of the vibration sleeve vibrates the mortar during grouting, thereby improving the grouting quality and preventing grouting defects. The vibration sleeve can be flexibly disassembled and can be reused as the grouting pipe is grouted and moved out of the anchor rod hole, thereby saving costs.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-anchoring anti-floating vibration anchor rod, comprising a steel strand anchor rod; an anchor and a water stop steel plate are sequentially arranged on the top of the steel strand anchor rod, a guide portion is arranged at the bottom of the steel strand anchor rod, and a support plate is arranged between the water stop plate and the guide portion; the steel strand anchor rod is composed of three steel strands arranged in a herringbone shape, and the guide portion arranged at the lower part is composed of a guide bracket, an anti-floating load-bearing block and a pressure plate, a guide bracket is arranged at a circumferential position on one end surface of the pressure plate, an anti-floating load-bearing block is arranged at the center position, a soil discharge groove is arranged on the guide surface of the guide bracket, and a limit slide is arranged on the other end surface of the pressure plate, a grouting hole is arranged in the center of the anchor, the water stop plate, the support plate and the pressure plate, and through holes for passing the steel strands are arranged in a herringbone shape around the grouting hole;

[0006] The self-anchored anti-floating vibration anchor also includes a vibration sleeve, which is a squirrel cage structure and is sleeved on the outside of the steel strand anchor. A limit buckle and a matching groove are provided at the bottom of the vibration sleeve. The limit buckle and the limit slide on the pressure plate are limit-connected. A vibration ring is arranged upward along the axis near the position of the limit buckle at the lower part of the vibration sleeve. A vibration spring is provided on the vibration ring, and a vibration motor is provided on the top of the vibration sleeve.

[0007] Furthermore, the vibration spring pieces are thin, long, and elastic pieces that are evenly distributed on the circumference of the vibration circle and radiate outward.

[0008] Furthermore, spiral reinforcement is arranged on the lower end surface of the anchor and the upper end surface of the pressure plate, and the spiral wire of the spiral reinforcement is wrapped around the outside of the circle formed by the three steel strands.

[0009] Furthermore, a grouting hole is provided at the center of the anti-floating load-bearing block, and threaded holes for connecting steel strand anchor rods are provided in a herringbone shape around the grouting hole.

[0010] Furthermore, the steel strands of the steel strand anchor are non-adhesive steel strands.

[0011] Furthermore, a clamp for fixing the grouting pipe is provided at the center of the top end of the vibration sleeve.

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

[0013] 1. A guide part is set at the lower part of the steel strand anchor to connect the vibration sleeve. While guiding vertically, it prevents the steel strand from floating and drifting, improves the fit between the steel strand anchor and the anchor hole, and improves the anti-floating property. At the same time, the vibration spring on the vibration sleeve vibrates and stirs the mortar, vibrating out the bubbles in the mortar during grouting, making the grouting more sufficient and the mortar more evenly distributed, thereby improving the grouting quality, improving the grouting effect, and enhancing the tolerance strength of underground projects.

[0014] 2. The vibration sleeve is movably connected and can be reused, saving costs and reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a self-anchoring anti-floating vibration anchor structure.

[0016] Figure 2 It is a front view of a self-anchoring anti-floating vibration anchor rod structure described in the utility model.

[0017] Figure 3 It is a schematic diagram of the steel strand anchor structure described in the utility model.

[0018] Figure 4 It is a front view of the steel strand anchor rod structure described in the utility model.

[0019] Figure 5 It is a top view of the steel strand anchor rod structure described in the utility model.

[0020] Figure 6 It is a structural schematic diagram of the guide part described in the utility model.

[0021] Figure 7 It is a front view of the guide structure of the utility model.

[0022] Figure 8It is a top view of the guide structure of the utility model.

[0023] Fig. 9 It is a structural schematic diagram of the vibration sleeve described in the utility model.

[0024] Fig.10 It is a front view of the vibration sleeve structure described in the utility model.

[0025] Fig.11 It is a top view of the vibration sleeve structure described in the utility model.

[0026] In the figure: 1. Steel strand anchor rod 2. Guide part 3. Pressure plate 4. Guide bracket 5. Soil discharge trough 6. Limit slide 7. Support plate 8. Water stop plate 9. Anchor 10. Spiral steel bar 11. Anti-floating load-bearing block 12. Vibration sleeve 13. Matching groove 14. Limit buckle 15. Vibration ring 16. Vibration spring 17. Clamp 18. Vibration motor 19. Through hole 20. Grouting hole 21. Threaded hole DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0028] like Figure 1-Figure 11 As shown, the working principle of a self-anchored anti-floating vibration anchor rod is as follows: in the process of placing the steel strand anchor rod 1 into the anchor hole, the guide part 2 below the steel strand anchor rod 1 plays a vertical guiding role on the steel strand anchor rod 1, and at the same time, the remaining soil in the anchor hole is squeezed out of the falling position of the steel strand anchor rod 1 by the soil discharge trough 5, so as to ensure the verticality of the steel strand anchor rod 1 during the falling process. The anti-floating load-bearing block 11 of the guide part 2 not only fixes the steel strand anchor rod 1, but also prevents the steel strand anchor rod 1 from floating and drifting during the grouting process. The anti-floating property of the steel strand anchor rod 1 is enhanced. During grouting, the grouting pipe is connected from the grouting hole 20 to the bottom of the anchor hole. At the beginning of grouting, the water stop plate 8 and the anchor 9 are not installed on the steel strand anchor rod 1, and the grouting pipe is clamped and fixed by the clamp 17 of the vibration sleeve 12. When the grouting pipe is discharged, the vibration motor 18 is started, and the vibration spring piece 16 at the lower part of the vibration sleeve 12 vibrates and stirs the mortar, and the bubbles in the mortar are vibrated out of the mortar. As the mortar is injected, the vibration sleeve 12 is rotated away from the steel strand anchor rod 1, and is lifted up from the anchor hole together with the grouting pipe. During the grouting process, the vibration spring piece 16 continuously vibrates and stirs the mortar, so that the grouting is sufficient and the mortar is evenly distributed, thereby improving the grouting quality, improving the grouting effect, and enhancing the tolerance strength of the underground project.

[0029] like Figure 3-Figure 8As shown, a self-anchored anti-floating vibration anchor comprises a steel strand anchor 1; an anchor 9 and a water stop plate 8 are arranged on the top of the steel strand anchor 1 in sequence, a guide portion 2 is arranged at the bottom of the steel strand anchor 1, and a support plate 7 is arranged between the water stop plate 8 and the guide portion 2; the water stop plate 8 and the anchor 9 are not installed on the steel strand anchor 1 in the initial stage of anchoring and grouting, and the vibration sleeve 12 is anchored into the anchor hole together with the steel strand anchor 1, and the grouting pipe passes through the support plate 7, the pressure plate 3 and the anti-floating bearing block 11 to extend to the bottom of the anchor hole, and grouting is performed in the anchor hole. While grouting, the grouting pipe and the vibration sleeve 12 are pulled up together, and when the grouting pipe reaches the upper part of the anchor hole, the grouting pipe is pulled out. Take out the vibration sleeve 12, and put the water stop plate 8 into the steel strand anchor rod 1 to cover the anchor hole. There is a hole for the grouting pipe in the water stop plate 8. The grouting pipe can pass through and continue to grout in the blocked anchor hole. The water stop plate 8 blocks the grouting water spray. After the underground engineering construction is completed, the anchor 9 is installed on the top of the steel strand anchor rod 1 when preparing for tensioning. The steel strand anchor rod 1 is tensioned. A spiral steel bar 10 is set under the anchor 9 to provide a pre-tightening force for the anchoring. The steel strand anchor rod 1 is three steel strands arranged in a herringbone shape. The guide part 2 arranged at the bottom is composed of a guide bracket 4, an anti-floating load-bearing block 11 and a pressure plate 3. The circumferential position of the end face of one side of the pressure plate 3 is set The guide bracket 4 has an anti-floating load-bearing block 11 at the center, and a slag discharge groove 5 is provided on the guide surface of the guide bracket 4. The guide bracket 4 extends downward from the surrounding of the pressure plate 3 in an inverted cone to the anchor hole, and the tip of the guide bracket 4 penetrates into the ground at the bottom of the hole to play a supporting role. During the downward extension of the guide bracket 4, the silt and waste soil that have not been emptied in the anchor hole are discharged from the soil discharge groove 5 set in the guide bracket 4 to prevent the silt and waste soil from blocking the angle and length of the steel strand anchor rod 1 extending downward, thereby avoiding reducing the pressure bearing strength of the steel strand anchor rod 1. The anti-floating load-bearing block 11 is set in the center of the guide bracket 4 to ensure that the steel strand anchor rod 1 descends vertically while avoiding the steel strand during grouting. The anchor rod 1 floats and moves upward to improve the anti-floating property of the steel strand anchor rod 1. A limit slide 6 is provided on the other end face of the pressure plate 3. The limit slide 6 is a horizontal long U-shaped groove, which cooperates with the limit buckle 14 in the vibration sleeve 12. The anchor 9, the water stop plate 8, the support plate 7, and the pressure plate 3 are provided with a grouting hole 20 in the center. The grouting hole 20 is surrounded by a through hole 19 in a herringbone shape through which the steel strand is passed. The through hole 19 is in a herringbone shape and cooperates with the steel strand in a herringbone shape, so that the steel strand passes through the through hole 19 and is directly connected to the threaded hole 21 on the anti-floating load-bearing block 11 below. The end of the steel strand anchor rod 1 is threadedly connected and fixed with the threaded hole 21;

[0030] like Figure 1 , Figure 2 , Figure 9-11As shown, the self-anchored anti-floating vibration anchor rod also includes a vibration sleeve 12. The vibration sleeve 12 is a squirrel cage structure and is sleeved on the outside of the steel strand anchor rod 1. The vibration sleeve 12 plays a role in protecting the steel strand anchor rod 1. At the same time, it also blocks the mortar and sand that have not been emptied in the anchor hole outside the steel strand anchor rod 1 to prevent the steel strand anchor rod 1 from being bent and deformed by external forces during the placement of the steel strand anchor rod 1. A limit buckle 14 and a matching groove 13 are provided at the bottom of the vibration sleeve 12. The limit buckle 14 and the limit slide 6 on the pressure plate 3 are limitedly connected. The vibration sleeve 12 and the steel strand anchor rod 1 are in a live connection. When the vibration sleeve 12 rotates, the limit buckle 14 cooperates to slide into the limit slide 6, and the matching groove 13 provides space for accommodating the limit slide 6. In the process of placing the steel strand anchor rod 1, the vibration sleeve 12 is connected with the steel strand anchor rod 1 together and extends into the bottom of the anchor hole together. The grouting pipe is also extended together. When the grouting pipe starts grouting, The vibration sleeve 12 rotates to disengage from the steel strand anchor rod 1, and is pulled out of the anchor hole together with the grouting pipe during the grouting process. The movably connected vibration sleeve 12 can be reused, saving costs and reducing manufacturing costs. A vibration ring 15 is arranged upward along the axis near the position of the limit buckle 14 at the lower part of the vibration sleeve 12, and a vibration spring 16 is arranged on the vibration ring 15. Two vibration motors 18 are arranged on the top of the vibration sleeve 12. When the mortar does not pass through the vibration ring 15, the vibration motor 18 is started, and the vibration motor 18 drives the vibration sleeve 12 to vibrate. The vibration spring 16 extending outward from the vibration ring 15 is thin and elastic. The vibration motor 18 drives the vibration spring 16 to bounce, and the vibration spring 16 vibrates and stirs in the mortar liquid covering the surrounding area, vibrates out the bubbles in the mortar, improves the compactness of the mortar, fully grouts, avoids grouting defects, improves the grouting quality and grouting effect, and enhances the tolerance strength of underground projects.

[0031] like Fig.11 As shown, further, the vibration spring piece 16 is a thin, long and thin elastic piece evenly distributed on the circumference of the vibration circle and radiating outward. The thin, long and thin elastic piece can better receive the vibration of the vibration motor 18, increase the amplitude, enhance the vibration stirring ability, effectively vibrate and stir the mortar, effectively prevent the occurrence of bubbles and hollows in the mortar, and make the mortar evenly stirred.

[0032] like Figure 1-Figure 4 As shown, further, spiral reinforcement 10 is provided on the lower end surface of the anchor 9 and the upper end surface of the pressure plate 3, and the spiral wire of the spiral reinforcement 10 is wrapped around the outside of the circle formed by the three steel strands. The spiral reinforcement 10 is distributed at both ends of the steel strand anchor rod 1. After the underground project is completed, the expansion of the mortar will give a certain pressure to the steel strand anchor rod 1. The spiral reinforcement 10 offsets a part of the pressure after the mortar expansion, and provides a pre-tightening force for the anchoring of the steel strand anchor rod 1.

[0033] like Figure 8As shown, further, a grouting hole 20 is provided in the center of the anti-floating load-bearing block 11, and threaded holes 21 for connecting steel strands are arranged in a herringbone shape around the grouting hole 20. The threaded holes 21 are matched and connected with the lower threaded joints of the steel strand anchor rod 1, so that the steel strands of the steel strand anchor rod 1 are erected on the anti-floating load-bearing block 11 to maintain the verticality of the steel strand anchor rod 1.

[0034] Furthermore, the steel strands of the steel strand anchor rod 1 are non-adhesive steel strands.

[0035] like Fig. 9 As shown, further, a clamp 17 for fixing the grouting pipe is provided at the center of the top of the vibration sleeve 12. The grouting pipe falls to the bottom of the anchor hole together with the steel strand anchor rod 1 and is pulled out of the anchor hole together with the vibration sleeve 12. In order to maintain the synchronization between the vibration sleeve 2 and the grouting pipe, a clamp 17 is provided on the top of the vibration sleeve 12 to clamp the grouting pipe, and then it is pulled out together with the grouting process. Because the vibration sleeve 12 needs to be pulled out in advance when grouting to the anchor hole is approaching, the clamp 17 is designed to be open, which is convenient for pulling out from the grouting pipe.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-anchored anti-floating vibration anchor rod, comprising a steel strand anchor rod; an anchor and a water stop steel plate are sequentially arranged on the top of the steel strand anchor rod, a guide portion is arranged at the bottom of the steel strand anchor rod, and a support plate is arranged between the water stop plate and the guide portion; characterized in that: The steel strand anchor rod is composed of three steel strands arranged in a herringbone shape, and the guide part arranged at the lower part is composed of a guide bracket, an anti-floating load-bearing block and a pressure plate. The guide bracket is arranged at a circumferential position of one end surface of the pressure plate, and the anti-floating load-bearing block is arranged at the center position. A soil discharge groove is arranged on the guide surface of the guide bracket, and a limit slide is arranged on the other end surface of the pressure plate. Grouting holes are arranged in the center of the anchor, water stop plate, support plate and pressure plate, and through holes for passing the steel strands are arranged in a herringbone shape around the grouting holes; The self-anchored anti-floating vibration anchor also includes a vibration sleeve, which is a squirrel cage structure and is sleeved on the outside of the steel strand anchor. A limit buckle and a matching groove are provided at the bottom of the vibration sleeve. The limit buckle and the limit slide on the pressure plate are limit-connected. A vibration ring is arranged upward along the axis near the position of the limit buckle at the lower part of the vibration sleeve. A vibration spring is provided on the vibration ring, and a vibration motor is provided on the top of the vibration sleeve.

2. A self-anchored anti-floating vibration anchor according to claim 1, characterized in that: The vibration spring pieces are thin, long and thin elastic pieces uniformly distributed on the circumference of the vibration circle and radiating outward.

3. The self-anchored anti-floating vibration anchor according to claim 1, characterized in that: The lower end surface of the anchor and the upper end surface of the pressure plate are provided with spiral reinforcements, and the spiral wires of the spiral reinforcements are wrapped around the outside of the circle formed by the three steel strands.

4. The self-anchored anti-floating vibration anchor according to claim 1, characterized in that: A grouting hole is arranged at the center of the anti-floating load-bearing block, and threaded holes for connecting steel strand anchor rods are arranged in a herringbone shape around the grouting hole.

5. The self-anchored anti-floating vibration anchor according to claim 1, characterized in that: The steel strands of the steel strand anchor rod are non-bonding steel strands.

6. The self-anchored anti-floating vibration anchor according to claim 1, characterized in that: A clamp for fixing the grouting pipe is arranged at the center of the top end of the vibration sleeve.

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