Novel glass fiber reinforced plastic hollow grouting anchor rod

Abstract

The invention discloses a novel glass fiber reinforced plastic hollow grouting anchor rod, and relates to the technical field of glass fiber reinforced plastic, the novel glass fiber reinforced plastic hollow grouting anchor rod comprises a glass fiber reinforced plastic hollow anchor rod body, the top of the glass fiber reinforced plastic hollow anchor rod body is communicated with a limiting adjusting cylinder, and the novel glass fiber reinforced plastic hollow grouting anchor rod further comprises an adjusting mechanism, the adjusting mechanism is used for conveniently fixing the glass fiber reinforced plastic hollow anchor rod body; the positioning mechanisms are located on the two sides of the adjusting mechanism, the positioning mechanisms are used for improving the stability of the glass fiber reinforced plastic hollow anchor rod body, and the adjusting mechanism comprises a mounting groove, a sawtooth locking plate, a reset spring, an unlocking shifting block, a sliding type pushing ring and teeth; according to the glass fiber reinforced plastic hollow anchor rod, through cooperative use of the adjusting mechanism and the positioning mechanism, the rod body of the glass fiber reinforced plastic hollow anchor rod can be firmly positioned in a grouting hole, pre-tightening force attenuation caused by retraction of the rod body is prevented, and the overall stability and safety of an engineering structure are enhanced.

Description

Technical Field

[0001] This invention relates to the field of fiberglass technology, and in particular to a novel fiberglass hollow grouting anchor. Background Technology

[0002] Fiberglass hollow grouting anchors are anchoring devices used for reinforcement and support in geotechnical engineering. They combine the excellent properties of fiberglass materials with the effects of grouting technology and are widely used in tunnels, mines, underground engineering and other fields. Their basic structure includes a hollow fiberglass rod body, grouting pipes and grouting channel system. By injecting grout, they form a strong anchoring force, providing support and stability.

[0003] Existing fiberglass hollow grouting anchors often experience a certain degree of retraction outward from the hole after grouting. This is due to the shrinkage of the grout during solidification and the continuous stress of the surrounding rock. This retraction reduces the pre-applied preload, disrupting the mechanical balance between the anchor and the grout-formed rock mass, as well as between the grout-formed rock mass and the surrounding rock. Consequently, the anchoring force fails to meet design expectations, weakening its support effect on the surrounding rock and affecting the overall stability of the project. To address these issues, we propose a novel fiberglass hollow grouting anchor. Summary of the Invention

[0004] The purpose of this application is to address the problem that, after grouting, existing fiberglass hollow grouting anchors often experience a certain degree of retraction outward from the hole due to the shrinkage of the grout during solidification and the continuous stress of the surrounding rock. This retraction reduces the pre-applied preload, disrupts the mechanical balance between the anchor and the grout-formed rock mass, as well as between the grout-formed rock mass and the surrounding rock, resulting in the anchoring force failing to meet design expectations. Consequently, the anchor's support effect on the surrounding rock is weakened, affecting the overall stability of the project. This application provides a novel fiberglass hollow grouting anchor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a novel fiberglass hollow grouting anchor bolt, comprising a fiberglass hollow anchor bolt body, the top of which is connected to a limit adjustment cylinder, and further comprising: An adjustment mechanism is located on the surface of the limiting adjustment cylinder and is used to facilitate the fixing of the fiberglass hollow anchor rod body; The positioning mechanisms are located on both sides of the adjustment mechanism and are used to improve the stability of the fiberglass hollow anchor rod.

[0006] The adjustment mechanism includes: a mounting groove, a serrated locking plate, a return spring, an unlocking lever, a sliding push ring, and teeth; Two mounting slots are provided on both sides of the limit adjustment cylinder. The inner cavity of the mounting slot is slidably connected to the serrated locking plate. There are two serrated locking plates. The top and bottom of the opposite side of the two serrated locking plates are fixedly connected to the return spring. The end of the return spring away from the serrated locking plate is fixedly connected to the inner wall of the mounting slot. The front and rear sides of the serrated locking plate are slidably connected to the inner wall of the mounting slot. The top of the front side of the serrated locking plate is fixedly connected to the unlocking block. There are two unlocking blocks. The front side of the unlocking block penetrates through the limit adjustment cylinder. The sliding push ring is slidably sleeved on the surface of the limit adjustment cylinder. Multiple teeth are provided on both sides of the inner cavity of the sliding push ring. One end of the teeth extends into the inner cavity of the mounting slot and meshes with the serrated locking plate.

[0007] The positioning mechanism includes: a rubber sealing plug, a drive housing, a knob, a threaded rod, a threaded sleeve, a positioning plate, and an anti-slip protrusion; The bottom of the sliding push ring is fixedly connected to the rubber sealing plug, and the opening is opened at the top of the rubber sealing plug. Both sides of the rubber sealing plug are provided with receiving grooves. Both sides of the sliding push ring are fixedly connected to the drive housing. The two knobs are movably set on opposite sides of the two drive housings. The opposite sides of the two knobs are fixedly connected to the threaded rod. The opposite sides of the two threaded rods are rotatably connected to the sliding push ring. The surface of the threaded rod is movably connected to the inner cavity of the threaded sleeve. There are two threaded sleeves. The bottom of the threaded sleeve passes through the drive housing and is fixedly connected to the positioning plate. There are two positioning plates. The bottom of the positioning plate extends into the inner cavity of the receiving groove. Multiple anti-slip protrusions are opened on the opposite sides of the two positioning plates.

[0008] Using the above structure, the operator simultaneously moves the unlocking blocks on both sides inward, causing the serrated locking plate to retract inward against the spring force of the return spring. This disengages the serrated locking plate from the teeth on the inner wall of the sliding push ring, releasing the mechanical lock on the sliding push ring. Then, force is applied to push the sliding push ring along the surface of the limit adjusting cylinder, causing the rubber sealing grout stop plug to enter the predetermined depth of the grouting borehole. The rubber sealing grout stop plug is made of elastic material, with an outer diameter slightly larger than the borehole diameter. It relies on radial elastic deformation to form an interference fit with the borehole wall, effectively sealing the borehole opening and preventing grout leakage. After the operator releases the unlocking blocks, the serrated locking plate extends outward under the action of the return spring, re-engaging with the teeth. Utilizing the self-locking inclined surface design of the teeth, mechanical self-locking is achieved, locking the sliding push ring and the rubber sealing grout stop plug in place. The plug is firmly locked to resist grouting pressure, vibration, and rod retraction force, maintaining a reliable seal throughout the grouting and solidification process. The operator then rotates a knob to drive the threaded rod, converting the rotational motion into linear motion of the threaded sleeve. This pushes the positioning plate out of the receiving groove of the rubber sealing plug, causing its anti-slip protrusions to press tightly against the borehole wall. This increases friction, forming a mechanical barrier that effectively resists the outward movement of the fiberglass hollow anchor rod. Grouting is then performed via an adapter grouting head, filling the borehole with grout through the fiberglass hollow anchor rod and solidifying into a whole. During this process, the sealing of the rubber sealing plug and the mechanical locking of the positioning plate work together to completely suppress rod retraction, maintain preload, and ensure the rigidity, support effect, and long-term stability of the anchoring system.

[0009] Preferably, the front and rear sides of the mounting groove are provided with sliding grooves, and the front and rear sides of the serrated locking plate are provided with sliding rails, with the sliding grooves cooperating with the sliding rails.

[0010] Furthermore, the stability of the serrated locking plate during movement can be improved by using the combination of slide grooves and slide rails.

[0011] Preferably, the limiting adjustment cylinder has through openings on both sides of the front side, and the openings cooperate with the unlocking lever.

[0012] Furthermore, the opening allows for easy manual movement of the unlocking lever.

[0013] Preferably, a limiting port is provided at the bottom of the drive housing, and the limiting port cooperates with the threaded sleeve.

[0014] Furthermore, by setting a limit buckle, the threaded sleeve can be moved to drive the positioning plate.

[0015] Preferably, positioning holes are provided on opposite sides of the two drive housings, and the inner cavity of the positioning hole is rotatably connected to the surface of the threaded rod via a rotating shaft.

[0016] Furthermore, by opening positioning holes and rotating the shaft to connect with the surface of the threaded rod, the stability of the threaded rod during rotation can be improved.

[0017] Preferably, the top of the limiting adjustment cylinder is connected to an adapter grouting head.

[0018] Furthermore, by setting up an adapter grouting head, it is convenient to connect with grouting equipment.

[0019] The beneficial effects of this invention are: The operator simultaneously moves the unlocking blocks on both sides inward. The inward movement of the unlocking blocks causes the serrated locking plate, which is fixedly connected to it, to overcome the elastic restoring force of the return spring and retract into the mounting groove cavity. This action completely disengages the serrated structure on the outer side of the serrated locking plate from the multiple teeth evenly arranged on the inner wall of the sliding push ring, thus completely releasing the circumferential and axial mechanical lock on the sliding push ring. Subsequently, the operator can apply a downward force along the axial direction of the limit adjusting cylinder. This force drives the sliding push ring to move smoothly along the predetermined guide path on the outer surface of the limit adjusting cylinder. The downward movement of the sliding push ring simultaneously drives the rubber sealing grout stop plug, which is fixed to its lower end through the connecting structure, to move until the rubber sealing grout stop plug is precisely pushed into and sits at the predetermined depth inside the grouting borehole. Because the rubber sealing grout stop plug is made of highly elastic, highly wear-resistant rubber or polyurethane polymer material, and its designed outer diameter is slightly larger than the borehole diameter, it is pressed in... During the process, radial elastic deformation occurs, and its own elasticity forms a tight interference fit with the borehole wall. This fit can effectively seal the annular gap at the grouting orifice, thereby achieving a reliable seal at the grouting orifice and preventing the grout from overflowing or leaking outwards from the orifice during subsequent grouting operations. After the rubber sealing plug is positioned and sealed, the operator releases the unlocking block. At this time, the serrated locking plate extends outwards under the reset force provided by the reset spring, so that the serrated structure on its outer side re-engages tightly with the teeth of the sliding push ring's inner cavity. Since the meshing surface of the teeth is usually designed as a bevel angle with a self-locking function, this meshing forms a reliable mechanical self-locking. Through this self-locking method, the sliding push ring and the rubber sealing plug connected to it are firmly locked in the current position and cannot be displaced upwards under the pressure, vibration, or potential retraction force of the rod generated during the grouting stage, thereby maintaining an effective dynamic sealing effect throughout the entire grouting and grout solidification process. The operator rotates the knobs mounted on both sides of the drive housing. The rotation of the knobs drives the threaded rod to rotate. Due to the threaded engagement between the threaded rod and the threaded sleeve, and the constraint of the threaded sleeve by the upper limit opening of the drive housing, the rotational motion of the knobs is converted into linear motion of the threaded sleeve. This causes the threaded sleeve to pull the positioning plate out of the receiving groove on the side of the rubber sealing plug. Ultimately, the anti-slip protrusions on the surface of the positioning plate are pressed tightly against the borehole wall. The anti-slip protrusions increase the roughness and friction coefficient of the contact surface, thereby generating a huge mechanical meshing force and friction. This force directly counteracts the possible outward displacement tendency of the fiberglass hollow anchor rod, forming a strong mechanical barrier and significantly enhancing the anchor rod's anti-retraction ability. After the mechanical locking and positioning are completed, the grouting equipment is connected to the grouting head at the top of the limit adjustment cylinder to start the grouting operation. The grout flows into the bottom of the borehole through the hollow fiberglass anchor rod and fills the annular space between the anchor rod and the borehole wall from bottom to top, finally consolidating the anchor rod, grout, and surrounding rock into a whole. During this process and in the subsequent grout solidification and service stages, due to the effective sealing of the rubber sealing plug and the additional mechanical locking provided by the positioning plate, the fiberglass hollow anchor rod cannot retract out of the hole, thus perfectly maintaining the pre-tightening force applied during installation, ensuring the design stiffness and support effect of the anchoring system, and greatly improving the long-term stability and safety of the engineering structure. This invention, through the combined use of an adjustment mechanism and a positioning mechanism, can firmly position the fiberglass hollow anchor rod in the grouting hole, preventing the preload from decreasing due to rod retraction and enhancing the overall stability and safety of the engineering structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the limiting cylinder and sliding push ring structure according to an embodiment of this application; Figure 3 This is a cross-sectional view of the sliding push ring and grouting plug according to an embodiment of this application; Figure 4 This is a schematic diagram of the toothed plate and spring structure according to an embodiment of this application; Figure 5 This is a cross-sectional view of the drive housing according to an embodiment of this application; Figure 6 This is a top view of the mounting slot according to an embodiment of this application.

[0021] In the diagram: 1. Fiberglass hollow anchor rod body; 2. Limit adjustment cylinder; 3. Installation groove; 4. Serrated locking plate; 5. Return spring; 6. Unlocking block; 7. Sliding push ring; 8. Teeth; 9. Rubber sealing grout stop plug; 11. Drive housing; 12. Knob; 13. Threaded rod; 14. Threaded sleeve; 15. Positioning plate; 16. Anti-slip protrusion; 17. Slide groove; 18. Slide rail; 20. Through port; 19. Adaptor grouting head. Detailed Implementation

[0022] The present invention will be further explained below with reference to specific embodiments.

[0023] refer to Figures 1-6 This embodiment proposes a novel fiberglass hollow grouting anchor bolt, including a fiberglass hollow anchor bolt body 1, the top of which is connected to a limit adjustment cylinder 2, and further comprising: The adjustment mechanism is located on the surface of the limit adjustment cylinder 2. The adjustment mechanism is used to facilitate the fixing of the fiberglass hollow anchor rod 1. The positioning mechanism is located on both sides of the adjustment mechanism. The positioning mechanism is used to improve the stability of the fiberglass hollow anchor rod 1.

[0024] The adjustment mechanism includes: mounting groove 3, serrated locking plate 4, return spring 5, unlocking lever 6, sliding push ring 7, and teeth 8; Two mounting slots 3 are opened on both sides of the limiting adjustment cylinder 2. The inner cavity of the mounting slot 3 is slidably connected to the sawtooth locking plate 4. There are two sawtooth locking plates 4. The top and bottom of the opposite side of the two sawtooth locking plates 4 are fixedly connected to the return spring 5. The end of the return spring 5 away from the sawtooth locking plate 4 is fixedly connected to the inner wall of the mounting slot 3. The front and rear sides of the sawtooth locking plate 4 are slidably connected to the inner wall of the mounting slot 3. The top of the front side of the sawtooth locking plate 4 is fixedly connected to the unlocking block 6. There are two unlocking blocks 6. The front side of the unlocking block 6 penetrates through the limiting adjustment cylinder 2. The sliding push ring 7 is slidably sleeved on the surface of the limiting adjustment cylinder 2. Multiple teeth 8 are opened on both sides of the inner cavity of the sliding push ring 7. One end of the teeth 8 extends into the inner cavity of the mounting slot 3 and meshes with the sawtooth locking plate 4. The inward movement of the unlocking lever 6 causes the connected serrated locking plate 4 to overcome the elastic force of the return spring 5 and retract inward, thereby completely disengaging the serrated locking plate 4 from the teeth 8 provided on the inner wall of the sliding push ring 7. At this point, the mechanical lock on the sliding push ring 7 can be released. Subsequently, the operator can apply downward force to make the sliding push ring 7 drive the rubber sealing grout stop plug 9 at its lower end to slide smoothly downward along a predetermined path until the rubber sealing grout stop plug 9 is accurately pushed into the grouting hole. The elastic deformation of the 9 itself creates an interference fit with the hole wall, thereby effectively blocking the grouting hole and preventing the grout from overflowing. After positioning is completed, the operator releases the unlocking block 6, and the serrated locking plate 4 extends outward under the reset force provided by the reset spring 5, so that the outer serrations re-engage and lock tightly with the teeth 8 of the inner cavity of the sliding push ring 7. Through this mechanical self-locking method, the sliding push ring 7 and the rubber sealing grout stop plug 9 are firmly held in the current position, ensuring that they will not be displaced under grouting pressure and maintaining the sealing effect.

[0025] The positioning mechanism includes: a rubber sealing plug 9, a drive housing 11, a knob 12, a threaded rod 13, a threaded sleeve 14, a positioning plate 15, and an anti-slip protrusion 16; The bottom of the sliding push ring 7 is fixedly connected to the rubber sealing grout stop plug 9. The opening 10 is opened at the top of the rubber sealing grout stop plug 9. Both sides of the rubber sealing grout stop plug 9 are provided with receiving grooves. Both sides of the sliding push ring 7 are fixedly connected to the drive housing 11. The two knobs 12 are movably set on opposite sides of the two drive housings 11. The opposite sides of the two knobs 12 are fixedly connected to the threaded rod 13. The opposite sides of the two threaded rods 13 are rotatably connected to the sliding push ring 7. The surface of the threaded rod 13 is movably connected to the inner cavity of the threaded sleeve 14. There are two threaded sleeves 14. The bottom of the threaded sleeve 14 passes through the drive housing 11 and is fixedly connected to the positioning plate 15. There are two positioning plates 15. The bottom of the positioning plate 15 extends into the inner cavity of the receiving groove. Multiple anti-slip protrusions 16 are opened on opposite sides of the two positioning plates 15. The operator rotates knob 12 to drive threaded rod 13, converting rotational motion into linear motion of threaded sleeve 14. This pushes positioning plate 15 out of the receiving groove of rubber sealing plug 9, causing its anti-slip protrusions 16 to press tightly against the borehole wall. By increasing friction, a mechanical barrier is formed, effectively resisting the outward movement of the fiberglass hollow anchor rod 1. Grouting is then performed via grouting head 19, filling the borehole with grout through the fiberglass hollow anchor rod 1 and solidifying it into a whole. During this process, the sealing of rubber sealing plug 9 and the mechanical locking of positioning plate 15 work together to completely suppress rod retraction, maintain preload, and ensure the rigidity, support effect, and long-term stability of the anchoring system.

[0026] In this embodiment, the front and rear sides of the inner cavity of the mounting groove 3 are provided with sliding grooves 17, and the front and rear sides of the serrated locking plate 4 are provided with slide rails 18. The sliding grooves 17 and slide rails 18 cooperate with each other. The stability of the serrated locking plate 4 when it moves can be improved by the cooperation of the sliding grooves 17 and slide rails 18.

[0027] In this embodiment, the limiting adjustment cylinder 2 has through openings 20 on both sides of the front side. The openings 10 cooperate with the unlocking lever 6. By setting the openings 10, it is convenient to manually move the unlocking lever 6.

[0028] In this embodiment, a limiting port is provided at the bottom of the drive housing 11. The limiting port cooperates with the threaded sleeve 14. By providing a limiting buckle, the threaded sleeve 14 can drive the positioning plate 15 to move.

[0029] In this embodiment, positioning holes are provided on opposite sides of the two drive housings 11. The inner cavity of the positioning hole is rotatably connected to the surface of the threaded rod 13 via a rotating shaft. By providing positioning holes and rotatably connecting them to the surface of the threaded rod 13 via a rotating shaft, the stability of the threaded rod 13 during rotation can be improved.

[0030] In this embodiment, the top of the limit adjustment cylinder 2 is connected to a grouting head 19, which facilitates connection with grouting equipment.

[0031] Working principle: In use, the assembled anchor bolt assembly is first inserted into the pre-drilled anchor hole. The fiberglass hollow anchor bolt body 1 enters the hole, and the rubber sealing plug 9 is temporarily located outside the hole opening. At this time, due to the tension of the return spring 5, the serrated locking plate 4 is engaged with the teeth 8 on the inner wall of the sliding push ring 7. The sliding push ring 7 and the connected rubber sealing plug 9 are mechanically locked in the initial position and will not move on their own. After the anchor bolt body is placed to the design depth, the hole opening needs to be sealed before grouting. At the same time, the operator presses the unlocking block 6 inward. The unlocking block 6 drives the serrated locking plate 4 to retract into the installation groove 3 against the force of the return spring 5, so that the serrated locking plate 4 completely disengages from the teeth 8 on the inner wall of the sliding push ring 7. 7. After unlocking, manually move the sliding push ring 7 along the outer wall of the limit adjustment cylinder 2 until the rubber sealing grout stop plug 9 is fully pressed into the anchor hole opening. The rubber sealing grout stop plug 9 is usually made of rubber or elastic polymer material, and its outer diameter is slightly larger than the drilling diameter. It uses the elastic deformation of the material to form an interference fit with the hole wall, thereby achieving a reliable seal at the grouting hole opening and preventing grout leakage from the hole opening during grouting. When the rubber sealing grout stop plug 9 is in place, release the unlocking block 6. The serrated locking plate 4 pops outward under the restoring force of the return spring 5 and re-engages with the teeth 8 on the inner wall of the sliding push ring 7 at the current height. Since the teeth 8 are designed as unidirectional helical teeth or have a self-locking angle, after engagement, they can effectively prevent the sliding push ring 7 from being affected by grouting pressure or rod retraction force. The rubber sealing plug 9 is locked firmly in its current position by retracting downwards and upwards, ensuring a continuous sealing effect. After the seal is locked, further operation is performed to prevent the rod from retracting due to future slurry shrinkage and surrounding rock deformation. The operator rotates the knobs 12 installed on both sides of the drive housing 11. The rotation of the knobs 12 drives the threaded rod 13 to rotate. Due to the threaded engagement between the threaded rod 13 and the threaded sleeve 14, and the fact that the threaded sleeve 14 is constrained by the upper limit port of the drive housing 11 and cannot rotate, the rotational motion of the knobs 12 is converted into the linear motion of the threaded sleeve 14. This causes the threaded sleeve 14 to drive the positioning plate 15 to extend out of the receiving groove on the side of the rubber sealing plug 9. Finally, the anti-slip protrusions 16 on the surface of the positioning plate 15 are pressed tightly against the borehole wall. This increases the roughness and friction coefficient of the contact surface, thereby generating a huge mechanical meshing force and friction force. This force directly counteracts the possible outward displacement tendency of the fiberglass hollow anchor rod 1, forming a strong mechanical barrier and significantly enhancing the anchor rod's anti-retraction ability. After completing the above mechanical locking and positioning, the grouting equipment is connected through the grouting head 19 at the top of the limit adjustment cylinder 2 to start the grouting operation. The grout flows into the bottom of the borehole through the hollow fiberglass hollow anchor rod 1 and fills the annular space between the anchor rod and the borehole wall from bottom to top, ultimately consolidating the anchor rod, grout, and surrounding rock into a whole. During this process and in the subsequent grout solidification and service stages, the effective sealing of the rubber sealing grout stop plug 9 and the additional mechanical locking provided by the positioning plate 15 ensure the stability of the anchor rod.The fiberglass hollow anchor rod body 1 cannot retract outward from the hole, thus perfectly maintaining the preload applied during installation. This ensures the design stiffness and support effect of the anchoring system, greatly improving the long-term stability and safety of the engineering structure.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel fiberglass hollow grouting anchor bolt, comprising a fiberglass hollow anchor bolt body (1), wherein the top of the fiberglass hollow anchor bolt body (1) is connected to a limit adjustment cylinder (2), characterized in that, This also includes: Adjustment mechanism, the adjustment mechanism is located on the surface of the limiting adjustment cylinder (2), the adjustment mechanism is used to facilitate the fixing of the fiberglass hollow anchor rod body (1); The positioning mechanism is located on both sides of the adjustment mechanism. The positioning mechanism is used to improve the stability of the fiberglass hollow anchor rod (1).

2. The novel fiberglass hollow grouting anchor bolt according to claim 1, characterized in that, The adjustment mechanism includes: a mounting groove (3), a serrated locking plate (4), a reset spring (5), an unlocking lever (6), a sliding push ring (7), and teeth (8); Two mounting slots (3) are opened on both sides of the limiting adjustment cylinder (2). The inner cavity of the mounting slot (3) is slidably connected to the sawtooth locking plate (4). There are two sawtooth locking plates (4). The top and bottom of the opposite side of the two sawtooth locking plates (4) are fixedly connected to the return spring (5). The end of the return spring (5) away from the sawtooth locking plate (4) is fixedly connected to the inner wall of the mounting slot (3). The front and rear sides of the sawtooth locking plate (4) are slidably connected to the inner wall of the mounting slot (3). The top of the front side of the sawtooth locking plate (4) is fixedly connected to the unlocking block (6). There are two unlocking blocks (6). The front side of the unlocking block (6) penetrates through the limiting adjustment cylinder (2). The sliding push ring (7) is slidably sleeved on the surface of the limiting adjustment cylinder (2). Multiple teeth (8) are opened on both sides of the inner cavity of the sliding push ring (7). One end of the teeth (8) extends into the inner cavity of the mounting slot (3) and meshes with the sawtooth locking plate (4).

3. A novel fiberglass hollow grouting anchor bolt according to claim 1, characterized in that, The positioning mechanism includes: a rubber sealing plug (9), a drive housing (11), a knob (12), a threaded rod (13), a threaded sleeve (14), a positioning plate (15), and an anti-slip protrusion (16). The bottom of the sliding push ring (7) is fixedly connected to the rubber sealing grout stop plug (9). The opening (10) is opened on the top of the rubber sealing grout stop plug (9). Both sides of the rubber sealing grout stop plug (9) are provided with receiving grooves. Both sides of the sliding push ring (7) are fixedly connected to the drive housing (11). The two knobs (12) are movably set on opposite sides of the two drive housings (11). The opposite sides of the two knobs (12) are fixedly connected to the threaded rod (13). The opposite sides of the two threaded rods (13) are rotatably connected to the sliding push ring (7). The surface of the threaded rod (13) is movably connected to the inner cavity of the threaded sleeve (14). There are two threaded sleeves (14). The bottom of the threaded sleeve (14) penetrates the drive housing (11) and is fixedly connected to the positioning plate (15). There are two positioning plates (15). The bottom of the positioning plate (15) extends to the inner cavity of the receiving groove. Multiple anti-slip protrusions (16) are opened on opposite sides of the two positioning plates (15).

4. A novel fiberglass hollow grouting anchor bolt according to claim 2, characterized in that, The mounting groove (3) has a sliding groove (17) on the front and rear sides of the inner cavity, and the serrated locking plate (4) has a slide rail (18) on the front and rear sides. The sliding groove (17) and the slide rail (18) are matched.

5. A novel fiberglass hollow grouting anchor bolt according to claim 2, characterized in that, The limit adjustment cylinder (2) has through holes (20) on both sides of the front side, and the through holes (20) cooperate with the unlocking lever (6).

6. A novel fiberglass hollow grouting anchor bolt according to claim 3, characterized in that, A limiting port is provided at the bottom of the drive housing (11), and the limiting port cooperates with the threaded sleeve (14).

7. A novel fiberglass hollow grouting anchor bolt according to claim 3, characterized in that, Both drive housings (11) have positioning holes on opposite sides, and the inner cavity of the positioning hole is rotatably connected to the surface of the threaded rod (13) via a rotating shaft.

8. A novel fiberglass hollow grouting anchor bolt according to claim 1, characterized in that, The top of the limiting adjustment cylinder (2) is connected to the grouting head (19).

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