Self-hole-sealing high polymer grouting anchor rod

Abstract

The utility model relates to the technical field of infrastructure reinforcement, in particular to a self-sealing hole high polymer grouting anchor rod which comprises a grouting rod body, a self-sealing plug is fixedly installed on the outer surface of the grouting rod body, a telescopic groove is formed in the bottom face of the self-sealing plug, and a plurality of exhaust holes are formed in the upper surface of the self-sealing plug and communicated with the interior of the telescopic groove. A spring is fixedly installed on the top wall of the telescopic groove, the bottom end of the spring extends to the position below the self-sealing plug, and the bottom end of the spring is fixedly connected with a plugging plate. According to the self-hole-sealing high polymer grouting anchor rod, the output end of a grouting machine is connected with a grouting head, grouting is conducted on the interior of a grouting groove through the grouting rod, in the grouting process, a motor is started to drive a connecting shaft to rotate, the connecting shaft drives a second gear to rotate and drives a driving gear and a sleeve to rotate, then a supporting stirring rod rotates, high polymer grout is stirred, and grouting is conducted. And the phenomenon that the anchoring effect is affected due to the fact that bubbles remain in the high polymer slurry is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of infrastructure reinforcement, in particular to a self-sealing high-polymer grouting bolt. Background Technique

[0002] The geotechnical anchoring technology is a technology that uses bolts or cables to reinforce the rock and soil mass to improve its stability and self-stabilizing ability. This technology ensures the stability of the rock mass by inducing additional stress and strain in the rock mass, increasing the integrity, tensile strength, and shear strength of the rock mass. The geotechnical anchoring technology is widely used in slope stability, deep foundation pit support, anti-floating projects and other fields, and has the characteristics of economy, effectiveness, and small environmental pollution. According to whether prestress is applied in advance, bolts can be divided into two categories: prestressed bolts and non-prestressed bolts. Prestressed bolts generate prestress through tensioning and actively reinforce the rock and soil mass, with higher bearing capacity and stability.

[0003] Patent Application No.: 202021515435.7 proposes a self-sealing high-polymer grouting bolt, which includes: a hollow rod body, a grout stop sheet, a grout plug, and an extrusion structure; the self-sealing high-polymer grouting bolt provided by the utility model has a simple structure, convenient construction, clear force, good hole-sealing effect, and can effectively prevent grout leakage; it combines the existing construction processes of separating hole-sealing grouting and anchoring grouting in high-polymer anchoring grouting, and can complete high-polymer anchoring grouting in one construction, realizing the integration of hole-sealing, grouting, and anchoring, simplifying the construction process, and improving production efficiency.

[0004] This device is provided with an exhaust component, which easily causes the air inside the grouting groove to be difficult to discharge during grouting, resulting in the air being easily mixed with the grout, resulting in cavities inside the grout, affecting the strength of the solidified grout, affecting the anchoring requirements of the device, and being difficult to meet people's usage requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a self-sealing high-polymer grouting bolt to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-sealing high-polymer grouting bolt, comprising a grouting rod, on the outer surface of which a self-sealing plug is fixedly installed. A telescopic groove is formed on the bottom surface of the self-sealing plug, and a plurality of exhaust holes are formed on the upper surface of the self-sealing plug and are communicated with the inside of the telescopic groove. A spring is fixedly installed on the top wall of the telescopic groove, and the bottom end of the spring extends below the self-sealing plug. The bottom end of the spring is fixedly connected with a plugging plate. A working box is fixedly installed on the outer surface of the grouting rod, and the working box is arranged inside the telescopic groove. A sleeve is rotatably installed on the outer surface of the grouting rod, and the top end of the sleeve extends into the working box. A rotating assembly is arranged inside the working box to drive the sleeve to rotate. A plurality of groups of support stirring rods are fixedly installed on the outer surface of the sleeve, and a grouting head is fixedly installed at the top end of the grouting rod.

[0008] Preferably, a sealing sleeve is fixedly installed on the outer surface of the self-sealing plug, and the width of the upper end of the sealing sleeve is greater than the width of the lower end of the sealing sleeve.

[0009] Preferably, the shape of the plugging plate matches the opening of the telescopic groove. A sealing ring is fixedly connected to the outer surface of the plugging plate. The sealing ring is thin at the top and thick at the bottom, and the width of the lower end of the sealing ring is wider than the inner diameter of the telescopic groove.

[0010] Preferably, a working cavity is formed inside the working box. The top end of the sleeve extends into the working cavity. A gear is fixedly installed on the outer surface of the top end of the sleeve. A motor is fixedly installed inside the working cavity. The output end of the motor is fixedly connected with a connecting shaft. A second gear is fixedly installed on the outer surface of the connecting shaft, and the second gear meshes with the gear.

[0011] Preferably, a damping plate is fixedly installed on the side of the motor, and the motor is fixedly installed on the inner wall of the working cavity through the damping plate.

[0012] Preferably, a bearing seat is installed on the outer surface of the sleeve, and the sleeve is rotatably connected with the working box through the bearing seat.

[0013] Compared with the prior art, the present utility model provides a self-sealing high-polymer grouting bolt, which has the following beneficial effects:

[0014] 1. For this self-sealing high-polymer grouting bolt, connect the output end of the grouting machine with the grouting head, and grout into the inside of the grouting groove through the grouting rod. During the grouting process, start the motor to drive the connecting shaft to rotate. The connecting shaft drives the second gear to rotate, and then drives the gear and the sleeve to rotate, so that the support stirring rods rotate to stir the high-polymer slurry, preventing air bubbles from remaining inside the high-polymer slurry and affecting the anchoring effect.

[0015] 2. The self-sealing hole polymer grouting bolt is provided with exhaust holes on the self-sealing plug, which facilitates the discharge of the gas inside the grouting groove during the grouting process. When the top of the slurry inside the grouting groove contacts the plugging plate, continuous grouting is carried out, and the slurry will push the plugging plate upward to seal the telescopic groove. The cooperation between the plugging plate and the self-sealing plug facilitates the complete sealing of the opening of the grouting groove. After the grouting is completed, the motor is turned off, and waiting for the slurry to completely solidify can complete the anchoring of the rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic internal structure diagram of the self-sealing plug of the present invention;

[0018] Figure 3 is a schematic internal structure diagram of the working box of the present invention;

[0019] Figure 4 is a schematic structural diagram of the present invention installed inside the grouting groove.

[0020] In the figure: 1, rock mass; 2, grouting groove; 3, grouting rod; 4, self-sealing plug; 5, exhaust hole; 6, sealing sleeve; 7, spring; 8, plugging plate; 9, sleeve; 10, support stirring rod; 11, working box; 12, working cavity; 13, gear; 14, motor; 15, second gear; 16, connecting shaft; 17, grouting head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1-4 , a self-sealing hole polymer grouting bolt, including a grouting rod 3. A self-sealing plug 4 is fixedly installed on the outer surface of the grouting rod 3. During use, first, a grouting groove 2 is opened on the rock mass 1, and then the grouting rod 3 is inserted into the interior of the grouting groove 2. The self-sealing plug 4 is used to fix the grouting rod 3. An expansion slot is opened on the bottom surface of the self-sealing plug 4. A plurality of exhaust holes 5 are opened on the upper surface of the self-sealing plug 4 and are communicated with the interior of the expansion slot to facilitate exhaust during grouting. A spring 7 is fixedly installed on the top wall of the expansion slot. The bottom end of the spring 7 extends below the self-sealing plug 4, and the bottom end of the spring 7 is fixedly connected to a plugging plate 8. Under normal circumstances, the spring 7 can push the plugging plate 8 downward through its own elastic force and not contact the expansion slot to prevent affecting the exhaust of the device. A working box 11 is fixedly installed on the outer surface of the grouting rod 3. The working box 11 is arranged inside the expansion slot. A sleeve 9 is rotatably installed on the outer surface of the grouting rod 3. The top end of the sleeve 9 extends into the interior of the working box 11. A rotating assembly is arranged inside the working box 11 to drive the sleeve 9 to rotate. A plurality of groups of support stirring rods 10 are fixedly installed on the outer surface of the sleeve 9. A grouting head 17 is fixedly installed at the top end of the grouting rod 3, which is used to connect with a grouting machine and is used to grout into the grouting groove 2.

[0022] When grouting, connect the output end of the grouting machine to the grouting head 17, and grout into the interior of the grouting groove 2 through the grouting rod 3. By providing an exhaust hole 5 on the self-sealing plug 4, it is convenient to discharge the gas inside the grouting groove 2 during the grouting process. When the top of the slurry inside the grouting groove 2 contacts the sealing plate 8, continue grouting. The slurry will push the sealing plate 8 upward to block the telescopic groove. The cooperation between the sealing plate 8 and the self-sealing plug 4 facilitates completely blocking the opening of the grouting groove.

[0023] Among them, a sealing sleeve 6 is fixedly installed on the outer surface of the self-sealing plug 4. The upper width of the sealing sleeve 6 is greater than the lower width of the sealing sleeve 6, which facilitates completely fixing the self-sealing plug 4 inside the grouting groove 2 through the sealing sleeve 6.

[0024] Furthermore, the shape of the sealing plate 8 matches the opening of the telescopic groove. A sealing ring is fixedly connected to the outer surface of the sealing plate 8. The sealing ring is thick at the top and thin at the bottom, and the lower end of the sealing ring is wider than the inner diameter of the telescopic groove, which facilitates completely closing the telescopic groove and preventing the device from leaking slurry.

[0025] Refer to Figure 3 , a working cavity 12 is provided inside the working box 11. The top end of the sleeve 9 extends into the interior of the working cavity 12. A gear 13 is fixedly installed on the outer surface of the top end of the sleeve 9. A motor 14 is fixedly installed inside the working cavity 12. The output end of the motor 14 is fixedly connected to a connecting shaft 16. A second gear 15 is fixedly installed on the outer surface of the connecting shaft 16. The second gear 15 meshes with the gear 13. During the grouting process, by starting the motor 14, the connecting shaft 16 is driven to rotate. The connecting shaft 16 drives the second gear 15 to rotate, driving the gear 13 and the sleeve 9 to rotate, and further rotating the support stirring rod 10 to stir the polymer slurry, preventing air bubbles from remaining inside the polymer slurry and affecting the anchoring effect.

[0026] Furthermore, a damping plate is fixedly installed on the side of the motor 14. The motor 14 is fixedly installed on the inner wall of the working cavity 12 through the damping plate, which facilitates damping for the motor 14 during its operation and ensures the normal operation of the motor 14.

[0027] Among them, a bearing seat is installed on the outer surface of the sleeve 9. The sleeve 9 is rotationally connected to the working box 11 through the bearing seat, which facilitates the normal rotation of the sleeve 9, and further rotates the support stirring rod 10 to stir the polymer slurry, preventing air bubbles from remaining inside the polymer slurry.

[0028] Working principle: When using this self-sealing hole high-polymer grouting bolt, first open a grouting groove 2 on the rock mass 1, then insert the grouting rod 3 into the inside of the grouting groove 2, and use the sealing sleeve 6 on the outer surface of the self-sealing plug 4 to fix the grouting rod 3. Then connect the output end of the grouting machine to the grouting head 17, and grout into the inside of the grouting groove 2 through the grouting rod 3. During the grouting process, start the motor 14 to drive the connecting shaft 16 to rotate. The connecting shaft 16 drives the second gear 15 to rotate, driving the driving gear 13 and the sleeve 9 to rotate, and then making the support stirring rod 10 rotate to stir the high-polymer slurry, preventing air bubbles from remaining in the high-polymer slurry and affecting the anchoring effect;

[0029] By providing an exhaust hole 5 on the self-sealing plug 4, it is convenient to discharge the gas inside the grouting groove 2 during the grouting process. When the top of the slurry inside the grouting groove 2 contacts the plugging plate 8, continue grouting, and the slurry will push the plugging plate 8 to move upward to block the telescopic groove. The plugging plate 8 cooperates with the self-sealing plug 4 to conveniently block the opening of the grouting groove completely. When the grouting is completed, turn off the motor 14 and wait for the slurry to completely solidify to complete the anchoring of the rock.

[0030] This bolt has a simple structure and convenient construction, realizing the integration of hole sealing, grouting, and anchoring, and improving production efficiency.

Claims

1. A self-sealing polymer grouting bolt, comprising a grouting rod (3), characterized in that: A self-sealing plug (4) is fixedly installed on the outer surface of the grouting rod (3). A telescopic groove is formed in the bottom surface of the self-sealing plug (4). A plurality of exhaust holes (5) are formed in the upper surface of the self-sealing plug (4) and are communicated with the inside of the telescopic groove. A spring (7) is fixedly installed on the top wall of the telescopic groove. The bottom end of the spring (7) extends below the self-sealing plug (4). The bottom end of the spring (7) is fixedly connected to a plugging plate (8). A working box (11) is fixedly installed on the outer surface of the grouting rod (3). The working box (11) is arranged inside the telescopic groove. A sleeve (9) is rotatably installed on the outer surface of the grouting rod (3). The top end of the sleeve (9) extends into the working box (11). A rotating assembly is arranged inside the working box (11) for driving the sleeve (9) to rotate. A plurality of groups of support stirring rods (10) are fixedly installed on the outer surface of the sleeve (9). A grouting head (17) is fixedly installed at the top end of the grouting rod (3).

2. The self-sealing high polymer grouting bolt according to claim 1, characterized in that: A sealing sleeve (6) is fixedly installed on the outer surface of the self-sealing plug (4). The width of the upper end of the sealing sleeve (6) is greater than the width of the lower end of the sealing sleeve (6).

3. The self-sealing polymer grouting bolt according to claim 1, characterized in that: The shape of the plugging plate (8) matches the opening of the telescopic groove. A sealing ring is fixedly connected to the outer surface of the plugging plate (8). The sealing ring is thin at the top and thick at the bottom. The width of the lower end of the sealing ring is wider than the inner diameter of the telescopic groove.

4. The self-sealing high polymer grouting bolt according to claim 1, characterized in that: A working cavity (12) is formed inside the working box (11). The top end of the sleeve (9) extends into the working cavity (12). A gear (13) is fixedly installed on the outer surface of the top end of the sleeve (9). A motor (14) is fixedly installed inside the working cavity (12). The output end of the motor (14) is fixedly connected to a connecting shaft (16). A second gear (15) is fixedly installed on the outer surface of the connecting shaft (16). The second gear (15) meshes with the gear (13).

5. The self-sealing polymer grouting bolt according to claim 4, characterized in that: A damping plate is fixedly installed on the side surface of the motor (14). The motor (14) is fixedly installed on the inner wall of the working cavity (12) through the damping plate.

6. The self-sealing high polymer grouting bolt according to claim 1, characterized in that: A bearing seat is installed on the outer surface of the sleeve (9). The sleeve (9) is rotatably connected to the working box (11) through the bearing seat.

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