Grouting anchor rod capable of draining water

Abstract

A grouting anchor rod capable of draining water comprises a hollow anchor rod body, a drainage assembly, a grouting pipe and a side face reinforcing assembly, the side face of the hollow anchor rod body is sleeved with the drainage assembly, the drainage assembly is movably sleeved with the grouting pipe, and the side face reinforcing assembly is arranged at the conical end of the hollow anchor rod body. Wherein the side face reinforcing assembly comprises movable rods, pushing sleeves, connecting rod assemblies, non-return assemblies and rotating drill bit assemblies, the movable rods are movably installed in installation grooves in the side face of the hollow anchor rod in a circumferential array mode, the hollow anchor rod is movably sleeved with the pushing sleeves, the pushing sleeves are located at the end of the grouting pipe, and the connecting rod assemblies are hinged to the movable rods; the other end of the connecting rod assembly is hinged to a pushing sleeve, a non-return assembly is arranged on the pushing sleeve, and a rotating drill bit assembly is arranged at the end of the movable rod. And by arranging a connecting rod and a torsional spring, even if one rotating drill bit assembly cannot move, movement of the rotating drill bit assemblies in other directions cannot be affected, and then the reinforcing capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of grouting anchor technology, specifically a drainable grouting anchor. Background Technology

[0002] Application number CN202422149012.2 discloses a mining end-expanding anchor bolt, including an anchor bolt component, a limiting structure provided below the anchor bolt component, and a push-out structure provided at the top of the limiting structure.

[0003] The aforementioned prior art can strengthen the anchor bolt's fixation by setting an ejection structure. However, if one side of the ejection structure encounters a hard object, the ejection structure will be unable to be ejected, thus making it difficult to achieve the purpose of strengthening the anchor bolt's fixation. Utility Model Content

[0004] The purpose of this invention is to provide a drainable grouting anchor bolt to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A drainable grouting anchor bolt includes a hollow anchor bolt, a drainage component, a grouting pipe, and a side reinforcement component. The drainage component is sleeved on the side of the hollow anchor bolt, the grouting pipe is movably sleeved on the drainage component, and the side reinforcement component is located at the conical end of the hollow anchor bolt.

[0007] The side reinforcement assembly includes a movable rod, a push sleeve, a connecting rod assembly, a check valve assembly, and a rotating drill bit assembly. The movable rod is circumferentially arrayed and movably installed in the mounting groove on the side of the hollow anchor rod. The push sleeve is movably sleeved on the hollow anchor rod and located at the end of the grouting pipe. A connecting rod assembly is hinged to the movable rod, and the other end of the connecting rod assembly is hinged to the push sleeve. A check valve assembly is provided on the push sleeve, and a rotating drill bit assembly is provided at the end of the movable rod.

[0008] Preferably, the drainage component includes a water inlet hole, a high-porosity nonwoven geotextile, and a water-soluble resin layer. The hollow anchor rods are circumferentially arrayed with water inlet holes. The hollow anchor rods are wrapped with high-porosity nonwoven geotextile on their sides. The water-soluble resin layer is attached to the outer circumferential side of the high-porosity nonwoven geotextile. The grouting pipe is sleeved on the water-soluble resin layer.

[0009] Preferably, the connecting rod assembly consists of two connecting rods that are hinged to each other, wherein a torsion spring is provided at the hinge.

[0010] Preferably, the check valve assembly includes a check valve rod and elastic check valve holes. The push sleeve has a circumferential array of check valve rods on its circular surface. One end of the check valve rod is a spherical pull-out part, and the other end is a cylindrical connecting part. The conical end of the hollow anchor rod has a circumferential array of elastic check valve holes, the same number as the check valve rods. The elastic check valve holes are wide at both ends and narrow in the middle. The check valve rods are directly opposite the elastic check valve holes.

[0011] Preferably, the rotating drill bit assembly includes a drill bit, a spiral guide groove, and a cylindrical pin. The drill bit is rotatably mounted on a movable rod. The drill bit has a spiral guide groove circumferentially formed. A cylindrical pin is provided in the mounting groove on the side of the hollow anchor rod, and the cylindrical pin cooperates with the spiral guide groove.

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

[0013] This utility model discloses a drainable grouting anchor bolt. During operation, the anchor bolt is reinforced by a side reinforcement component. Simultaneously, the connecting rod and torsion spring ensure that even if one rotating drill bit component is immobilized, it does not affect the movement of the other rotating drill bit components, thus improving the reinforcement capacity of the side reinforcement component. Furthermore, the rotating drill bit component allows the drill bit to rotate even when moving outwards, increasing its drilling capacity. Finally, the drainage component allows drainage through the hollow anchor bolt, increasing the stability of the anchor bolt. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the end of this utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the interior of this utility model;

[0017] Figure 4 for Figure 3 Schematic diagram of section A in the middle;

[0018] Figure 5 This is a three-dimensional schematic diagram of the connecting rod in this utility model;

[0019] Figure 6 This is a three-dimensional schematic diagram of the hollow anchor rod in this utility model;

[0020] Figure 7 This is a three-dimensional schematic diagram of the push sleeve in this utility model;

[0021] Figure 8 This is a three-dimensional schematic diagram of the rotating drill bit assembly in this utility model.

[0022] In the diagram: 1 Hollow anchor rod, 2 Drainage assembly, 3 Grouting pipe, 4 Side reinforcement assembly, 21 Water inlet hole, 22 High porosity nonwoven geotextile, 23 Water-soluble resin layer, 41 Movable rod, 42 Push sleeve, 43 Connecting rod assembly, 44 Torsion spring, 45 Check valve assembly, 46 Rotating drill bit assembly, 451 Check valve rod, 452 Elastic check valve hole, 461 Drill bit, 462 Spiral guide groove, 463 Cylindrical pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example:

[0025] Please see Figures 1 to 8 This utility model provides a technical solution: a drainable grouting anchor bolt, comprising a hollow anchor bolt 1, a drainage component 2, a grouting pipe 3, and a side reinforcement component 4. The drainage component 2 is sleeved on the side of the hollow anchor bolt 1, which can collect water from outside the hollow anchor bolt 1 into the hollow anchor bolt 1 and discharge it from the hollow anchor bolt 1. The grouting pipe 3 is movably sleeved on the drainage component 2. The side reinforcement component 4 is located at the conical end of the hollow anchor bolt 1, wherein:

[0026] The side reinforcement component 4 includes a movable rod 41, a push sleeve 42, a connecting rod assembly 43, a torsion spring 44, a check valve assembly 45, and a rotating drill bit assembly 46. The movable rod 41 is circumferentially arrayed and movably installed in the mounting groove on the side of the hollow anchor rod 1. The movable rod 41 forms a linear sliding pair in the mounting groove on the side of the hollow anchor rod 1. The push sleeve 42 is movably sleeved on the hollow anchor rod 1 and located at the end of the grouting pipe 3. The push sleeve 42 forms a linear sliding pair on the hollow anchor rod 1. The connecting rod assembly 43 is hinged to the movable rod 41, and the other end of the connecting rod assembly 43 is hinged to the push sleeve 42. The push sleeve 42 is provided with a check valve assembly 45, and the end of the movable rod 41 is provided with a rotating drill bit assembly 46. Pushing the push sleeve 42 can drive the movable rod 41 to move synchronously to the outside of the hollow anchor rod 1 through the connecting rod assembly 43.

[0027] In a preferred embodiment, the drainage component 2 includes a water inlet 21, a high-porosity nonwoven geotextile 22, and a water-soluble resin layer 23. The hollow anchor rod 1 has water inlets 21 arranged in a circumferential array, allowing water from outside the hollow anchor rod 1 to enter through the water inlets 21. The hollow anchor rod 1 is wrapped with the high-porosity nonwoven geotextile 22, which acts as a filter to prevent debris from entering the hollow anchor rod 1. The water-soluble resin layer 23 is attached to the outer circumferential surface of the high-porosity nonwoven geotextile 22, and the grouting pipe 3 is sleeved on the water-soluble resin layer 23. The water-soluble resin layer 23 dissolves upon contact with water. After grouting is completed, the water-soluble resin layer 23 will dissolve, while the high-porosity nonwoven geotextile 22 can isolate the grouting cement from contacting the hollow anchor rod 1, preventing cement grout from entering the hollow anchor rod 1.

[0028] As a preferred embodiment, the high-porosity nonwoven geotextile 22 is a conventional technical means for those skilled in the art, and its principles and solutions will not be elaborated here.

[0029] In a preferred embodiment, the connecting rod assembly 43 consists of two connecting rods hinged together, with a torsion spring 44 at the hinge. The elastic force of the torsion spring 44 is greater than the frictional force of the movable rod 41 drilling into the outside of the hollow anchor rod 1. By setting the torsion spring 44, when the movable rod 41 drills into the outside of the hollow anchor rod 1, the two connecting rods will not rotate relative to each other at the hinge point. Therefore, when one of the movable rods 41 encounters a hard object and cannot move, the two connecting rods hinged to it will rotate at the hinge point, thus not affecting the other movable rods 41 from continuing to move outward of the hollow anchor rod 1.

[0030] As a preferred embodiment, the water-soluble resin layer 23 is made of a water-soluble resin layer material. The preferred water-soluble resin layer material is a high-hardness, high-toughness waterborne polyurethane resin of model ML-2788. Therefore, it is a conventional technical means for those skilled in the art, and its principle and solution will not be described in detail here.

[0031] In a preferred embodiment, the check valve assembly 45 includes a check valve rod 451 and elastic check valve holes 452. The push sleeve 42 has a circumferential array of check valve rods 451. One end of each check valve rod 451 is a spherical pull-out resistant portion, and the other end is a cylindrical connecting portion. The diameter of the spherical pull-out resistant portion of the check valve rod 451 is larger than the outer diameter of the cylindrical connecting portion. The conical end of the hollow anchor rod 1 has a circumferential array of elastic check valve holes 452, the same number as the check valve rods 451. The elastic check valve holes 452 are wider at both ends and narrower in the middle, with the check valve rods 451 directly facing the elastic check valve holes 452. The check valve rods 451 can be inserted into the elastic check valve holes 452, but the pull-out force between the check valve rods 451 and the elastic check valve holes 452 is greater than the restoring force of the torsion spring 44. This prevents the movable rod 41 from approaching the hollow anchor rod 1 under the restoring force of the torsion spring 44 after the grouting pipe 3 leaves the push sleeve 42.

[0032] In a preferred embodiment, the rotating drill bit assembly 46 includes a drill bit 461, a helical guide groove 462, and a cylindrical pin 463. The drill bit 461 is rotatably mounted on the movable rod 41. The drill bit 461 has a helical guide groove 462 circumferentially formed. A cylindrical pin 463 is disposed in the mounting groove on the side of the hollow anchor rod 1, and the cylindrical pin 463 engages with the helical guide groove 462. Through the engagement of the helical guide groove 462 and the cylindrical pin 463 on the drill bit 461, the drill bit 461 rotates synchronously as it moves outward with the movable rod 41.

[0033] The working principle of this utility model:

[0034] In use, the hollow anchor rod 1 is first inserted into the anchor hole. Then, by pushing the grouting pipe 3, the pushing sleeve 42 moves towards the conical end of the hollow anchor rod 1. At this time, the connecting rod assembly 43 drives the movable rod 41 to move synchronously outwards from the hollow anchor rod 1. Simultaneously, the drill bit 461, with the cooperation of the spiral guide groove 462 and the cylindrical pin 463 on the head 461, rotates synchronously as the movable rod 41 moves outwards. When one of the movable rods 41 encounters a hard object and cannot move, the two connecting rods hinged to it will rotate at the hinge point, thus not affecting the other movable rods 41 from continuing to move outwards from the hollow anchor rod 1.

[0035] After the hollow anchor rod 1 is fixed, the grouting pipe 3 is connected to an external grouting device. During the grouting process, the grouting pipe 3 is continuously pulled out, and grouting is completed through the grouting pipe 3. During the grouting process, when the cement continuously comes into contact with the water-soluble resin layer 23, the water-soluble resin layer 23 will melt, thereby allowing the high-porosity non-woven geotextile 22 to isolate the grouting cement from contact with the hollow anchor rod 1, preventing cement grout from entering the interior of the hollow anchor rod 1.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drainable grouting anchor bolt, comprising a hollow anchor bolt (1), a drainage component (2), a grouting pipe (3), and a side reinforcement component (4), wherein the hollow anchor bolt (1) is fitted with the drainage component (2) on its side, the grouting pipe (3) is movably fitted onto the drainage component (2), and the side reinforcement component (4) is disposed at the conical end of the hollow anchor bolt (1), characterized in that: The side reinforcement component (4) includes a movable rod (41), a push sleeve (42), a connecting rod assembly (43), a check assembly (45), and a rotating drill bit assembly (46). The movable rod (41) is circumferentially arrayed and movably installed in the mounting groove on the side of the hollow anchor rod (1). The push sleeve (42) is movably sleeved on the hollow anchor rod (1) and located at the end of the grouting pipe (3). The connecting rod assembly (43) is hinged on the movable rod (41), and the other end of the connecting rod assembly (43) is hinged on the push sleeve (42). The push sleeve (42) is provided with a check assembly (45), and the end of the movable rod (41) is provided with a rotating drill bit assembly (46).

2. The drainable grouting anchor bolt according to claim 1, characterized in that: The drainage component (2) includes a water inlet (21), a high porosity nonwoven geotextile (22), and a water-soluble resin layer (23). The hollow anchor (1) has water inlets (21) arranged in a circumferential array. The hollow anchor (1) is wrapped with a high porosity nonwoven geotextile (22) on its side. The water-soluble resin layer (23) is attached to the outer side of the high porosity nonwoven geotextile (22). The grouting pipe (3) is sleeved on the water-soluble resin layer (23).

3. The drainable grouting anchor bolt according to claim 1, characterized in that: The connecting rod assembly (43) consists of two connecting rods that are hinged to each other, with a torsion spring (44) provided at the hinge.

4. A drainable grouting anchor bolt according to claim 1, characterized in that: The check valve assembly (45) includes a check valve rod (451) and elastic check valve holes (452). The push sleeve (42) is provided with a circumferential array of check valve rods (451). One end of the check valve rod (451) is a spherical pull-out part and the other end is a cylindrical connecting part. The conical end of the hollow anchor rod (1) is provided with an circumferential array of elastic check valve holes (452) in the same number as the check valve rods (451). The elastic check valve holes (452) are wide at both ends and narrow in the middle. The check valve rod (451) is directly opposite the elastic check valve holes (452).

5. A drainable grouting anchor bolt according to claim 1, characterized in that: The rotating drill bit assembly (46) includes a drill bit (461), a spiral guide groove (462), and a cylindrical pin (463). The drill bit (461) is rotatably mounted on the movable rod (41). The drill bit (461) has a spiral guide groove (462) circumferentially provided. A cylindrical pin (463) is provided in the mounting groove on the side of the hollow anchor rod (1). The cylindrical pin (463) cooperates with the spiral guide groove (462).

Images