Single-hole grouting bag type anchor rod
By setting a one-way grouting valve and elastic piece ball structure on the capsule bag of the bladder, the problems of cumbersome operation, large consumables and insufficient anchoring force in the prior art are solved, and the effects of simplicity of operation, material saving and sufficient anchoring force are achieved.
Patent Information
- Application Number
- CN202421485398.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing bladder anchors are cumbersome to operate, have large consumables, and it is difficult to control the consolidation force between the slurry after solidification, resulting in insufficient anchoring force.
A single-hole grouting bag type anchor rod is designed, and a one-way grouting valve is installed on the bag bag. The injection and overflow of the slurry are controlled through the elastic parts and ball structure to ensure that the slurry is high after solidification of the anchor.
The operation process is simplified, material is saved, the problem of slurry reflux is avoided, and sufficient anchoring force is ensured by controlling the slurry pressure.
Smart Images
Figure CN222576694U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of civil engineering technology, and in particular to a single-hole grouting bag anchor. Background Art
[0002] The bladder anchor is a prefabricated bladder bag put around the anchor steel pipe. When grouting, grouting is first done inside the bladder bag, and then grouting is done into the space outside the bladder bag in the drill hole. The slurry wrapped in the bladder bag is solidified to improve the bonding strength and self-stability of the anchor. It has the characteristics of fast construction speed, high construction strength and simple construction, so it is widely used in bridges, tunnels, water conservancy projects and other fields.
[0003] The existing bladder-type anchor rods are usually provided with a grouting pipe and an exhaust port. The slurry in the bladder bag is injected through the grouting pipe. During the injection process, the gas in the gas bladder bag is discharged through the exhaust port, so that the slurry can be injected smoothly. After the bladder bag is filled with slurry, the grouting pipe is inserted into the borehole outside the bladder bag to inject grout into the borehole. The operation is cumbersome and the consumables are large. At present, there are also one-way valves provided on the bladder bag, so that the slurry in the bladder bag can directly overflow out of the bladder bag through the one-way valve after being filled, and the entire borehole is grouted. However, some of them are difficult to control the consolidation force between the slurry in the bladder bag and the anchor rod after solidification, resulting in insufficient anchoring force of the anchor rod. Therefore, it is necessary to find a bladder-type anchor rod that can solve the above problems. Utility Model Content
[0004] The utility model aims to provide a single-hole grouting bag type anchor rod to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A single-hole grouting bag anchor bolt comprises an anchor bolt, a bag and a grouting pipe, wherein the bag is arranged on the anchor bolt, the bag wraps the anchoring part of the anchor bolt in the bag, the grouting pipe passes through the bag, the grouting port end of the grouting pipe extends to the bottom of the bag, and a one-way grouting valve is arranged on the top of the bag;
[0007] The one-way grouting valve includes a hollow shell with an opening at one end, a slurry outlet hole being provided on the hollow shell; a connecting port arranged at the shell opening, a ball arranged at the connecting port, the ball being larger than the connecting port and used to block the connecting port, and an elastic member arranged in the hollow shell, one end of the elastic member abutting against an end of the hollow shell away from the hollow shell, and the other end of the elastic member abutting against the ball, and the ball can move with the elastic compression of the elastic member to connect the connecting port and the slurry outlet hole.
[0008] Furthermore, the connection port is provided at the lower end of the hollow shell, a thread for connection is provided outside the connection port, and the diameter of the internal space of the hollow shell is larger than the diameter of the connection port.
[0009] Furthermore, four slurry outlet holes are arranged around the side wall of the hollow shell, and / or a slurry outlet hole is arranged on the top of the hollow shell, and the aperture of the slurry outlet hole is smaller than the aperture of the ball.
[0010] Furthermore, the elastic member is located in the hollow shell and is in a state of accumulated force, at which time the elastic member applies an extrusion force of 0.2-0.5 MPa to the ball.
[0011] Furthermore, the elastic member is a spring, the diameter of the spring is 12-16 cm, the length of the spring is 70-75 cm, and the diameter of the spring wire is 1.2-1.6 cm.
[0012] Furthermore, the anchor rod is provided with an upper anchor plate and a lower anchor plate, the bag is arranged between the upper anchor plate and the lower anchor plate, the anchor rod is provided with a steel cage, the steel cage is located in the bag, and the one-way grouting valve is threadedly connected to the upper anchor plate and communicated with the interior of the bag.
[0013] Furthermore, the grouting pipe passes through the upper anchor plate, the grouting pipe is passed through the steel cage, and the distance between the bottom of the grouting pipe and the lower anchor plate is 8-20 cm.
[0014] Furthermore, a guide cap is provided at the bottom of the anchor rod, and the guide cap is conical.
[0015] Furthermore, the pouch is made of inelastic material, and is cylindrical, 8-shaped, gourd-shaped, or in a shape that is larger at the bottom and smaller at the top.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] 1. The utility model provides a one-way grouting valve on the bag anchor rod, so that after the slurry in the bag is filled, it can flow out to the outside of the bag through the one-way grouting valve to fill the borehole. There is no need to provide a grouting pipe outside the bag, which is convenient for operation and saves materials. The one-way grouting valve also prevents the slurry outside the bag from flowing back into the bag, causing slurry backflow.
[0018] 2. The utility model sets the parameters and state of the spring in the one-way grouting valve to make the ball bear a certain extrusion pressure. The ball will be lifted up only when the extrusion pressure of the slurry in the bag is greater than the extrusion pressure applied to the ball by the spring. The slurry in the bag is ejected from the slurry outlet hole. The pressure of the slurry in the bag can be controlled to reach a certain intensity, thereby ensuring the compactness of the slurry in the bag after solidification. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model without the pouch.
[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model.
[0021] Figure 3 A schematic diagram of the internal structure of the one-way grouting valve in the utility model.
[0022] Figure 4 A schematic structural diagram of the hollow shell in the utility model.
[0023] Figure 5 A schematic diagram of the overall structure of the one-way grouting valve in the utility model.
[0024] Among them: anchor rod 1, upper anchor plate 11, lower anchor plate 12, guide cap 13, bag 2, grouting pipe 3, one-way grouting valve 4, hollow shell 41, grouting hole 42, connecting port 43, elastic member 44, ball 45. DETAILED DESCRIPTION
[0025] 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.
[0026] A single-hole grouting bag anchor, comprising an anchor 1, a bag 2 and a grouting pipe 3, wherein the bag 2 is arranged on the anchor 1, the bag 2 wraps the anchoring part of the anchor 1 in the bag 2, the grouting pipe 3 passes through the bag 2, the grouting port end of the grouting pipe 3 extends to the bottom of the bag 2, and a one-way grouting valve 4 is arranged on the top of the bag 2;
[0027] The one-way grouting valve 4 includes a hollow shell 41 with an opening at one end, and a slurry outlet hole 42 is provided on the hollow shell 41; a connecting port 43 is arranged at the opening of the hollow shell 41, a ball 45 is arranged at the connecting port 43, and the ball 45 is larger than the connecting port 43 and is used to block the connecting port 43; an elastic member 44 is arranged in the hollow shell 41, one end of the elastic member 44 abuts against one end of the hollow shell 41 away from the hollow shell 41, and the other end of the elastic member 44 abuts against the ball 45, and the ball 45 can move with the elastic compression of the elastic member 44 to connect the connecting port 43 and the slurry outlet hole 42.
[0028] It should be noted that, through the bag 2, after the grouting solidifies, the slurry in the bag 2 wraps the anchor rod 1 to increase the anchoring force. The slurry in the bag 2 needs to have a certain degree of firmness, and the slurry also needs to be injected outside the bag 2. By setting a one-way grouting valve 4, the slurry in the bag 2 can overflow outward through the one-way grouting valve 4 after being filled. During construction, it is only necessary to continuously grout into a grouting pipe 3 to fill the inside and outside of the bag 2. The structure is simple, the operation is also simple, and it is suitable for batch operations. When injecting slurry, the slurry first enters the bottom of the bag 2, gradually rises to the top of the bag 2, and continues to pressurize the grouting. When the pressure of the slurry in the bag 2 is greater than the force of the elastic member 44 against the ball 45, the ball 45 is lifted up, and the slurry enters the connection port 43 and then sprays out from the slurry outlet 42, thereby only filling the drilling space outside the bag 2.
[0029] As a further implementation of this embodiment, the connection port 43 is provided at the lower end of the hollow shell 41 , and a thread for connection is provided outside the connection port 43 . The diameter of the internal space of the hollow shell 41 is larger than the diameter of the connection port 43 .
[0030] It should be noted that the hollow shell 41 is provided with a connecting port 43 at the lower end to facilitate the slurry to flow out from the connecting port 43, and the connecting port 43 is provided with a threaded connection for easy operation, installation and replacement. The diameter of the space inside the hollow shell 41 is set larger than the diameter of the connecting port 43 to ensure that when the ball 45 is lifted up by the slurry pressure, there is enough space around it for the slurry to flow out.
[0031] As a further implementation of this embodiment, four pulp outlet holes 42 are provided around the side wall of the hollow shell 41, and / or a pulp outlet hole 42 is provided on the top of the hollow shell 41, and the hole diameter of the pulp outlet hole 42 is smaller than the hole diameter of the ball 45. Figure 3 As shown, the arrow is a schematic diagram of slurry ejection.
[0032] It should be noted that slurry outlet holes 42 are arranged around the hollow shell 41 to facilitate the slurry to flow out quickly from four directions. Slurry outlet holes 42 are also arranged on the top to facilitate the slurry to flow out from all directions. The diameter of the slurry outlet hole 42 is set smaller than the hole diameter of the ball 45 to prevent the ball 45 from being flushed out from the slurry outlet hole 42.
[0033] As a further implementation of this embodiment, the elastic member 44 is located in the hollow shell 41 and is in a charged state. At this time, the extrusion force applied by the elastic member 44 to the ball 45 is 0.2-0.5 MPa.
[0034] It should be noted that the elastic member 44 is in a stored state in the hollow shell 41, which means that it is in a compressed state, so that it exerts a certain extrusion pressure on the ball 45, and can completely press the ball 45, thereby completely blocking the connecting port 43. The extrusion pressure applied by the elastic member 44 to the ball 45 is related to the density of the slurry finally injected into the bag 2. When the pressure of the injected slurry on the ball 45 is greater than the extrusion pressure of the elastic member 44 on the ball 45, the ball 45 can be gradually pushed upward to make the slurry overflow outward. When the pressure of the injected slurry on the ball 45 becomes smaller, the ball 45 will be gradually squeezed down to block the connecting port 43.
[0035] As a further implementation of this embodiment, the elastic member 44 is a spring, the diameter of the spring is 12-16 cm, the length of the spring is 70-75 cm, and the diameter of the spring wire is 1.2-1.6 cm.
[0036] It should be noted that the elastic member 44 adopts a simple spring structure and is easy to manufacture. The extrusion force of the spring is related to the diameter, length and diameter of the spring wire. In order to ensure the extrusion force applied by the spring to the ball 45, controlling the parameters of the spring within a certain range is beneficial to ensuring its compression distance under a certain force, which facilitates the outflow of the slurry.
[0037] As a further implementation of this embodiment, the anchor rod 1 is provided with an upper anchor plate 11 and a lower anchor plate 12, the bag 2 is arranged between the upper anchor plate 11 and the lower anchor plate 12, the anchor rod 1 is provided with a steel cage, the steel cage is located in the bag 2, and the one-way grouting valve 4 is threadedly connected to the upper anchor plate 11 and communicated with the interior of the bag 2.
[0038] It should be noted that the provision of the upper anchor plate 11 and the lower anchor plate 12 facilitates the fixation of the two ends of the bag 2 and also changes the provision of a steel cage. The one-way grouting valve 4 is threadedly connected to the upper anchor plate 11, which is convenient to operate and easy to install.
[0039] As a further implementation of this embodiment, the grouting pipe 3 passes through the upper anchor plate 11, the grouting pipe 3 is passed through the steel cage, and the distance between the bottom of the grouting pipe 3 and the lower anchor plate is 8-20 cm.
[0040] It should be noted that passing the grouting pipe 3 through the upper anchor plate 11 is conducive to fixation. Passing the grouting pipe 3 through the steel cage is conducive to protecting the grouting pipe 3. The bottom end of the grouting pipe 3 can also be set close to the bottom center of the bag 2. A certain space is reserved at the lower end of the grouting pipe 3 mainly to enable the grouting process to proceed smoothly and to facilitate the slurry spraying.
[0041] As a further implementation of this embodiment, a guide cap 13 is provided at the bottom of the anchor rod 1, and the guide cap 13 is conical.
[0042] It should be noted that the guide cap 13 is conical and is arranged at the bottom of the anchor rod 1 to facilitate guiding and inserting the anchor rod 1 when inserting it into the drill hole, and to facilitate fixing the anchor rod 1 before grouting and when the slurry has not solidified.
[0043] As a further implementation of this embodiment, the pouch 2 is made of inelastic material, and the pouch 2 is cylindrical, 8-shaped, gourd-shaped, or larger at the bottom and smaller at the top.
[0044] It should be noted that the bag 2 is made of inelastic material to ensure that the slurry pressure in the bag 2 can lift the ball 45 as soon as possible. The bag 2 is set in different shapes to increase the friction after the slurry inside and outside the bag 2 solidifies, thereby increasing the anchoring force.
[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although the present specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A single-hole grouting bag anchor, comprising an anchor (1), a bag (2) and a grouting pipe (3), wherein the bag (2) is arranged on the anchor (1), the bag (2) wraps the anchoring part of the anchor (1) in the bag (2), the grouting pipe (3) passes through the bag (2), and the grouting port end of the grouting pipe (3) extends to the bottom of the bag (2), characterized in that: A one-way grouting valve (4) is provided on the top of the bag (2); The one-way grouting valve (4) comprises a hollow shell (41) with an opening at one end, a grouting hole (42) being provided on the hollow shell (41); a connecting port (43) arranged at the opening of the hollow shell (41); a ball (45) arranged at the connecting port (43), the ball (45) being larger than the connecting port (43) and used for blocking the connecting port (43); and an elastic member (44) arranged in the hollow shell (41), one end of the elastic member (44) abutting against an end of the hollow shell (41) away from the hollow shell (41), and the other end of the elastic member (44) abutting against the ball (45), and the ball (45) can move with the elastic compression of the elastic member (44) to connect the connecting port (43) with the grouting hole (42).
2. A single-hole grouting bag anchor according to claim 1, characterized in that: The connecting port (43) is arranged at the lower end of the hollow shell (41), and a thread for connection is arranged outside the connecting port (43), and the diameter of the internal space of the hollow shell (41) is larger than the diameter of the connecting port (43).
3. A single-hole grouting bag anchor according to claim 2, characterized in that: Four pulp outlet holes (42) are arranged around the side wall of the hollow shell (41), and / or a pulp outlet hole (42) is arranged on the top of the hollow shell (41), and the diameter of the pulp outlet hole (42) is smaller than the diameter of the ball (45).
4. The single-hole grouting bag anchor bolt according to claim 1, characterized in that: The elastic member (44) is located in the hollow shell (41) and is in a charged state. At this time, the extrusion force applied by the elastic member (44) to the ball (45) is 0.2-0.5 MPa.
5. The single-hole grouting bag anchor bolt according to claim 4, characterized in that: The elastic member (44) is a spring, the diameter of the spring is 12-16 cm, the length of the spring is 70-75 cm, and the diameter of the spring wire is 1.2-1.6 cm.
6. The single-hole grouting bag anchor bolt according to claim 1, characterized in that: The anchor rod (1) is provided with an upper anchor plate (11) and a lower anchor plate (12); the bag (2) is arranged between the upper anchor plate (11) and the lower anchor plate (12); a steel cage is provided on the anchor rod (1), and the steel cage is located in the bag (2); the one-way grouting valve (4) is threadedly connected to the upper anchor plate (11) and communicated with the interior of the bag (2).
7. The single-hole grouting bag anchor bolt according to claim 6, characterized in that: The grouting pipe (3) passes through the upper anchor plate (11), the grouting pipe (3) passes through the steel cage, and the distance between the bottom of the grouting pipe (3) and the lower anchor plate is 8-20 cm.
8. The single-hole grouting bag anchor bolt according to claim 1, characterized in that: A guide cap (13) is provided at the bottom of the anchor rod (1), and the guide cap (13) is conical.
9. The single-hole grouting bag anchor bolt according to claim 1, characterized in that: The pouch (2) is made of an inelastic material and is arranged in a cylindrical shape, an 8-shaped shape, or a shape that is larger at the bottom and smaller at the top.