A large-diameter gfrp bar and steel combined anchor rod

Abstract

The present application relates to the engineering technical fields, and particularly relates to a large-diameter GFRP bar and steel combined anchor rod, which comprises threaded steel, GFRP bar, U-shaped buckle, centering support and auxiliary fastener, a plurality of threaded steels are arranged equidistantly around the side wall of the centering support, the side walls on both sides of each threaded steel are welded with the side wall of the centering support, the bottom end side wall of the threaded steel is buckled with the top end side wall of the GFRP bar through a plurality of U-shaped buckles, and the GFRP bar is sleeved with a plurality of auxiliary fasteners from top to bottom; the anchor rod main body bottom end adopts the GFRP bar to reduce the weight of the structure; by means of the high tensile strength of the GFRP bar, the large-diameter GFRP bar and threaded steel combined anchor rod can effectively resist the buoyancy of groundwater, ensure that the underground structure bottom plate will not crack due to excessive buoyancy, and increase the stability of the underground structure; the GFRP bar has excellent corrosion resistance and can resist chemical substance corrosion in the underground environment, prolong the service life of the anchor rod, and reduce the maintenance and replacement cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering technology, in particular to a large-diameter GFRP bar and steel bar combined anchor rod. BACKGROUND

[0002] With the development of urban construction, the development scale of underground space is becoming larger and larger, and effective measures need to be taken to solve the influence of groundwater on the buoyancy of buildings, prevent the bottom plate of underground structure from cracking due to excessive buoyancy, and even cause the instability of the upper structure. The more common solutions for basement anti-floating are uplift piles and anti-floating anchor rods, among which anti-floating anchor rods are widely used due to their simple process, fast construction speed, low cost and other advantages. The main function of anchor rods is to connect with fixed structures and transfer loads to stable layers or rocks underground to increase the bearing capacity of soil or rock and provide support and stability. In civil engineering, anchor rods are often used in the following situations:

[0003] Construction pit wall support: In deep foundation pit engineering, anchor rods can be used to support construction pit walls to prevent soil collapse and pit wall sliding and ensure the safe progress of the project. Ground reinforcement: In land engineering, anchor rods can be used to increase the strength and stability of soil and reduce soil settlement or deformation.

[0004] However, traditional anti-floating anchor rods use steel anchor rod technology, such as patent number 202223228435.0, which discloses an anchor rod and anchor rod assembly, including a break-through nut, a connecting sleeve, a drill bit, and two anchor rods. The two ends of the anchor rod circumferential wall are provided with first threads, the first thread cross section is isosceles trapezoidal, the first thread angle is °, the connecting sleeve inner wall is threadedly connected with the first threads of the left and right ends of the left and right anchor rods, the break-through nut is threadedly connected with the first thread of the left end of the left anchor rod, and the drill bit is threadedly connected with the first thread of the right end of the right anchor rod. The connecting sleeve outer circumferential wall is rough, which is not suitable for application in basement foundation construction where there is planned tunnel construction underground. Since underground tunnel construction generally uses a shield machine for construction, steel anchor rods will seriously affect the shield machine passing through the area. SUMMARY

[0005] The present application provides a large-diameter GFRP bar and steel bar combined anchor rod to solve the problems in the background art.

[0006] In order to achieve the above-mentioned purpose of the application, the application provides the following technical scheme: a large-diameter GFRP bar and steel combined anchor rod, comprising: threaded steel, GFRP bar, U-shaped buckle, centering support and auxiliary fastener, a plurality of threaded steels are arranged equidistantly around the side wall of the centering support, the side walls on both sides of each threaded steel are welded with the side walls of the centering support, the bottom end side wall of the threaded steel is buckled with the top end side wall of the GFRP bar through a plurality of U-shaped buckles, and the GFRP bar is sleeved with a plurality of auxiliary fasteners from top to bottom.

[0007] Preferably, the inner walls of the U-shaped buckles are respectively matched with the side walls of the threaded steel and the GFRP bar, a nut is threadedly connected with each end of the U-shaped buckle, one side wall of the nut is matched with the side wall of the positioning plate, and the other side wall of the positioning plate is matched with the side wall of the threaded steel.

[0008] Preferably, the centering support is composed of a plurality of second threaded steels, the side walls of each second threaded steel are respectively welded with the side walls of one second threaded steel, and a threaded steel is arranged in the welding groove between the two second threaded steels, and the side walls of the threaded steel are respectively welded with the side walls of one second threaded steel.

[0009] Preferably, the auxiliary fastener comprises: a ring-shaped hoop and a UPVC pipe, the ring-shaped hoop is coaxially arranged outside the UPVC pipe, a positioning cavity is formed between the ring-shaped hoop and the UPVC pipe, and a plurality of GFRP bars are equidistantly arranged in the positioning cavity.

[0010] Preferably, the positioning device further comprises: an upper mounting ring, a positioning mechanism and a lower mounting ring, the side wall of the combined anchor rod is matched with the inner wall of the upper mounting ring, a plurality of positioning mechanisms are arranged in the circumferential array of the lower surface of the upper mounting ring, the output end of each positioning mechanism is arranged reversely perpendicular to the side wall of the combined anchor rod, and the bottom end of each positioning mechanism is connected with the lower mounting ring.

[0011] Preferably, the positioning mechanism comprises: a drill pipe, a driving assembly, a mounting shell and a suction assembly, a plurality of mounting shells are connected in the circumferential array of the bottom surface of the upper mounting ring, the bottom end of the suction assembly is arranged in the first through hole in the inner bottom wall of the mounting shell, the bottom end of the suction assembly is connected with the second through hole of the lower mounting ring through the telescopic pipe, one end of the suction assembly is connected with the output end of the drill pipe, the other end of the drill pipe is arranged out of the side wall of the mounting shell, the side wall of the mounting shell is connected with the side wall of the driving assembly, the driving assembly is connected with the drill pipe, and the bottom end of the driving assembly is connected with the upper end surface of the lower mounting ring.

[0012] Preferably, the suction assembly comprises a cannula, a sleeve, a suction rack, a driving tooth and a fan blade, the bottom end of a catheter is inserted into the first through hole of the inner bottom wall of the mounting shell, the bottom end of the catheter is connected with the top end of the telescopic tube, the top end of the catheter is connected with the side wall of the cannula, one end of the cannula is slidingly connected in one end of the sleeve, the inner wall of the sleeve slidingly connects a guide ring, the guide ring is sleeved on the side wall of the end of the drill pipe, the other end of the sleeve is provided with a stop ring for preventing the guide ring from being separated, the side wall of the sleeve is provided with the suction rack, the suction rack is in meshing transmission with the driving tooth, the driving tooth is mounted on the rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the mounting shell, the end of the rotating shaft penetrating into the cannula is connected with the fan blade, and the fan blade is arranged above the through hole where the cannula and the catheter are connected.

[0013] Preferably, the drill pipe comprises a pipe body, a spiral groove and a drill pipe thread, the pipe body is rotatably connected in the through hole of the side wall of the mounting shell, the side wall of one end of the pipe body is connected with the inner wall of the guide ring, the side wall of the other end of the pipe body is provided with the spiral groove and the drill pipe thread at intervals, a plurality of grouting holes are spirally and equidistantly formed in the groove bottom of the spiral groove, each grouting hole is communicated with the pipe body, and the drill pipe thread is threadedly connected with the driving assembly.

[0014] Preferably, the driving assembly comprises a mounting seat, an internal thread tooth, a driving rack and a clamping piece, the side wall of the mounting shell is connected with one end of the mounting seat, the internal thread tooth is rotatably connected on the mounting seat, the thread of the internal thread tooth is threadedly connected with the drill pipe thread, the gear of the internal thread tooth is in meshing transmission with the driving rack, the driving rack is slidingly connected on the side wall of the mounting seat, the bottom end of the driving rack is connected with the top surface of the lower mounting ring, a plurality of insertion grooves are formed in the side wall of the driving rack, the insertion grooves are insertedly matched with the output end of the clamping piece, and the other end of the clamping piece is connected with the side wall of the mounting shell.

[0015] Preferably, the clamping piece comprises a mounting column, a mounting block, a moving shell and an insertion rod, the side wall of the mounting shell is connected with one end of the mounting column, the mounting block is mounted on the other end of the mounting column, the moving shell is slidingly connected on the mounting column, the inner wall of the moving shell is connected with the side wall of the mounting block through a spring, the end of the moving shell is connected with the other end of the insertion rod, the other end of the insertion rod is insertedly matched with the insertion groove, and the bottom end of the insertion rod is provided with a chamfer.

[0016] The beneficial effects of the present application are as follows:

[0017] In the scheme of the present application:

[0018] 1. The GFRP bar at the bottom end of the anchor rod body reduces the weight of the structure;

[0019] 2. With the high tensile strength of the GFRP bar, the combination anchor rod of the large-diameter GFRP bar and the threaded steel can effectively resist the buoyancy of groundwater, ensure that the bottom plate of the underground structure will not crack due to excessive buoyancy, and increase the stability of the underground structure;

[0020] 3. The GFRP bar has excellent corrosion resistance, can resist chemical substances in underground environment, prolong the service life of anchor rod, reduce maintenance and replacement cost;

[0021] 4. Due to the low shear strength and easy cutting of the GFRP bar, the shield machine can smoothly pass through the anchor rod area during construction, avoiding hindering or damaging the shield machine. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the application;

[0023] Figure 2 It is a schematic diagram of the centering support structure of the application;

[0024] Figure 3 It is a schematic diagram of the auxiliary fastener structure of the application;

[0025] Figure 4 It is a schematic diagram of the positioning device structure of the application;

[0026] Figure 5 It is a schematic diagram of the positioning mechanism structure of the application;

[0027] Figure 6 It is a schematic diagram of the suction assembly structure of the application;

[0028] Figure 7 It is a schematic diagram of the fan installation position of the application;

[0029] Figure 8 It is a schematic diagram of the pipe body structure of the application;

[0030] Figure 9 It is a schematic diagram of the driving assembly structure of the application;

[0031] Figure 10 It is a schematic diagram of the clamping piece structure of the application;

[0032] Figure 11 It is a schematic diagram of the U-shaped buckle structure of the application;

[0033] Figure 12 It is a schematic diagram of the application Figure 5 It is a partial enlarged view of A in the application.

[0034] Wherein: threaded steel 1, GFRP bar 2, U-shaped buckle 3, centering support 4, auxiliary fastener 5, second threaded steel 6, ring hoop 7, UPVC pipe 8, positioning device 9, upper mounting ring 10, positioning mechanism 11, lower mounting ring 12, drill pipe 13, driving assembly 14, mounting shell 15, suction assembly 16, insertion pipe 17, sleeve pipe 18, suction rack 19, driving teeth 20, fan blade 21, pipe body 22, helical groove 23, drill pipe thread 24, mounting seat 25, internally threaded teeth 26, driving rack 27, clamping piece 28, mounting column 29, mounting block 30, moving shell 31, insertion rod 32. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and are not used to limit the present application.

[0036] Embodiment 1: Reference Figures 1-12 A large-diameter GFRP bar and steel combined anchor rod, comprising: threaded steel 1, GFRP bar 2, U-shaped buckle 3, centering support 4 and auxiliary fastener 5, a plurality of said threaded steel 1 is arranged equidistantly around the side wall of the centering support 4, the side wall of each threaded steel 1 is welded with the side wall of the centering support 4 respectively, the bottom end side wall of the threaded steel 1 is buckled with the top end side wall of the GFRP bar 2 through a plurality of U-shaped buckles 3, and the GFRP bar 2 is sleeved with a plurality of auxiliary fasteners 5 from top to bottom.

[0037] The working process and beneficial effects of the above technical solution are:

[0038] The threaded steel 1 is equidistantly arranged on the side wall of the centering support 4, the bottom end of the threaded steel 1 is buckled with the top end of the GFRP bar 2 through a plurality of U-shaped buckles 3, a plurality of GFRP bars 2 are fixed through auxiliary fasteners 5, and the bottom end of the anchor rod body adopts the GFRP bar 2 to reduce the weight of the structure; by means of the high tensile strength of the GFRP bar 2, the large-diameter GFRP bar 2 and the threaded steel 1 combined anchor rod can effectively resist the buoyancy of groundwater, ensure that the bottom plate of the underground structure will not crack due to excessive buoyancy, and increase the stability of the underground structure; the GFRP bar 2 has excellent corrosion resistance and can resist chemical substance corrosion in the underground environment, prolong the service life of the anchor rod, and reduce maintenance and replacement costs; and since the GFRP bar 2 has low shear strength and is easy to cut, the shield machine can smoothly pass through the anchor rod area during construction, avoiding hindering or damaging the shield machine.

[0039] The inner walls of the U-shaped buckles 3 are respectively matched with the side walls of the threaded steel 1 and the GFRP bar 2, one nut is respectively threadedly connected at both ends of the U-shaped buckle 3, one side wall of the nut is matched with the side wall of the positioning plate, and the other side wall of the positioning plate is matched with the side wall of the threaded steel 1.

[0040] The working process and beneficial effects of the above technical solution are:

[0041] The inner walls of the U-shaped buckle 3 are respectively attached to the side walls of the threaded steel 1 and the GFRP bar 2, and the two ends of the U-shaped buckle 3 are connected by bolts. Since the GFRP bar 2 is made of polymer and cannot be welded with the threaded steel 1, the U-shaped buckle 3 is used for fixing, thereby improving the connection and fixing effect between different materials in the anchor rod structure. Meanwhile, since the two ends of the U-shaped buckle 3 are connected by bolts, the overlapping length of the threaded steel 1 and the GFRP bar 2 can be adjusted, thereby improving the applicability of the structure.

[0042] The centering support 4 is composed of a plurality of second threaded steels 6. The two side walls of each second threaded steel 6 are respectively welded with the side walls of one second threaded steel 6. A threaded steel 1 is arranged in the welding groove between the two second threaded steels 6, and the two side walls of the threaded steel 1 are respectively welded with the side walls of one second threaded steel 6.

[0043] The working process and beneficial effects of the above technical solution are as follows:

[0044] The centering support 4 is composed of a plurality of second threaded steels 6. The two side walls of each second threaded steel 6 are respectively welded with the side walls of one second threaded steel 6. A threaded steel 1 is arranged in the welding groove between the two second threaded steels 6, and the two side walls of the threaded steel 1 are respectively welded with the side walls of one second threaded steel 6.

[0045] The auxiliary fastener 5 includes a ring-shaped hoop 7 and a UPVC pipe 8. The ring-shaped hoop 7 is coaxially arranged outside the UPVC pipe 8, and a positioning cavity is formed between the ring-shaped hoop 7 and the UPVC pipe 8. A plurality of GFRP bars 2 are arranged in the positioning cavity at equal intervals.

[0046] The working process and beneficial effects of the above technical solution are as follows:

[0047] A plurality of ring-shaped hoops 7 are sleeved on the plurality of GFRP bars 2. The ring-shaped hoops 7 and the UPVC pipe 8 respectively fix the GFRP bars 2 from the outside and the inside of the GFRP bars 2, thereby improving the fixing effect between the plurality of GFRP bars 2 and the centering effect between the plurality of GFRP bars 2.

[0048] The positioning device 9 further includes an upper mounting ring 10, a positioning mechanism 11, and a lower mounting ring 12. The side wall of the combined anchor rod is attached to the inner wall of the upper mounting ring 10. A plurality of positioning mechanisms 11 are arranged in the lower circumference of the upper mounting ring 10. The output end of each positioning mechanism 11 is arranged reversely perpendicular to the side wall of the combined anchor rod. The bottom end of each positioning mechanism 11 is connected with the lower mounting ring 12.

[0049] The working process and beneficial effects of the above technical solutions are:

[0050] The positioning device 9 can be sleeved on the side wall of the plurality of threaded steels 1 or the plurality of GFRP bars 2, the upper mounting ring 10 at the top end of the positioning device 9 is provided with a plurality of centering springs, one end of each centering spring is connected with the upper mounting ring 10, and the other end of each centering spring is connected with one side wall of the centering arc, and the other side wall of the centering arc is attached to the side wall of the plurality of threaded steels 1 or the plurality of GFRP bars 2, thereby improving the stability of the device; the positioning mechanism 11 and the lower mounting ring 12 mounted below the upper mounting ring 10 work in cooperation, when grouting, the lower mounting ring 12 is subjected to the upward pressure of the concrete, the positioning mechanism 11 drills and positions the side wall of the drill hole, and the positioning mechanism 11 grouts the side wall of the drill hole, thereby improving the connecting effect of the combined anchor rod in the drill hole.

[0051] The positioning mechanism 11 comprises a drill pipe 13, a driving assembly 14, a mounting shell 15 and a suction assembly 16, a plurality of mounting shells 15 are arranged in the circumferential direction on the bottom surface of the upper mounting ring 10, the bottom end of the suction assembly 16 is arranged in the first through hole in the inner bottom wall of the mounting shell 15, the bottom end of the suction assembly 16 is connected with the second through hole of the lower mounting ring 12 through an extension pipe, one end of the drill pipe 13 is connected with the output end of the suction assembly 16, the other end of the drill pipe 13 penetrates out of the side wall of the mounting shell 15, the side wall of the mounting shell 15 is connected with the side wall of the driving assembly 14, the driving assembly 14 is connected with the drill pipe 13, and the bottom end of the driving assembly 14 is connected with the upper end surface of the lower mounting ring 12.

[0052] The working process and beneficial effects of the above technical solutions are:

[0053] When grouting is performed in the drill hole, the lower mounting ring 12 moves upward after being subjected to the upward pressure of the cement slurry, the upward movement of the lower mounting ring 12 drives the driving assembly 14 to move upward, the movement of the driving assembly 14 drives the drill pipe 13 to drill into the side wall of the drill hole, while the drill pipe 13 drills, the other end of the drill pipe 13 drives one end of the suction assembly 16 in the mounting shell 15 to move, the movement of the one end of the suction assembly 16 starts the working of the internal structure of the suction assembly 16, the suction assembly 16 sucks the concrete through the extension pipe connected with the second through hole of the lower mounting ring 12, the concrete in the suction assembly 16 enters the drill pipe 13 through the pressurization of the suction assembly 16, and the concrete in the drill pipe 13 grouts the positioning drill hole in the side wall of the drill hole, thereby simplifying the design of the structure, improving the linkage effect of the device, and improving the stability of the positioning device 9 in the drill hole.

[0054] The suction assembly 16 comprises a spout 17, a sleeve 18, a suction rack 19, a driving tooth 20 and a fan blade 21, the bottom end of a guide pipe is inserted into the first through hole of the inner bottom wall of the mounting shell 15, the bottom end of the guide pipe is connected with the top end of the telescopic pipe, the top end of the guide pipe is connected with the side wall of the spout 17, one end of the spout 17 is slidingly connected in one end of the sleeve 18, a guide ring is slidingly connected to the inner wall of the sleeve 18, the guide ring is sleeved on the side wall of the end of the drill pipe 13, the other end of the sleeve 18 is provided with a blocking ring for preventing the guide ring from being separated, the suction rack 19 is mounted on the side wall of the sleeve 18, the suction rack 19 is in meshing transmission with the driving tooth 20, the driving tooth 20 is mounted on a rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the mounting shell 15, one end of the rotating shaft penetrating into the spout 17 is connected with the fan blade 21, and the fan blade 21 is arranged above the through hole where the spout 17 is connected with the guide pipe.

[0055] The working process and beneficial effects of the above technical solution are as follows:

[0056] When the drill pipe 13 drills the side wall of the drill hole, the drill pipe 13 moves relative to the mounting shell 15 to the side wall of the drill hole, the movement of the drill pipe 13 drives the movement of the guide ring, the movement of the blocking ring in contact with the guide ring, the movement of the sleeve 18, the synchronous movement of the suction rack 19 connected to the side wall of the sleeve 18, the rotation of the driving tooth 20 driven by the suction rack 19, the rotation of the fan blade 21 coaxially connected with the driving tooth 20, and the rotation of the spout 17 caused by the rotation of the fan blade 21. The rotation of the fan blade 21 reduces the pressure in the spout 17. Due to the reduction of the pressure in the spout 17, the concrete enters the telescopic pipe through the second through hole of the lower mounting ring 12, enters the guide pipe from the telescopic pipe, enters the spout 17 through the guide pipe, and is transported to the drill pipe 13 through the rotation of the fan blade 21. The space of the mechanism is fully utilized, and the transportation efficiency of the concrete slurry in the mechanism is improved through simplified design.

[0057] The drill pipe 13 comprises a pipe body 22, a spiral groove 23 and a drill pipe thread 24, the pipe body 22 is rotatably connected in the through hole of the side wall of the mounting shell 15, one end of the side wall of the pipe body 22 is connected with the inner wall of the guide ring, the spiral groove 23 and the drill pipe thread 24 are arranged on the side wall of the other end of the pipe body 22 at intervals, a plurality of grouting holes are spirally and equidistantly arranged on the groove bottom of the spiral groove 23, each grouting hole is communicated with the pipe body 22, and the drill pipe thread 24 is threadedly connected with the driving assembly 14.

[0058] The working process and beneficial effects of the above technical solution are as follows:

[0059] When the lower mounting ring 12 is subjected to the upward pressure of the cement slurry, the lower mounting ring 12 moves upward relative to the bottom end of the combined anchor rod, the movement of the lower mounting ring 12 drives the driving assembly 14 to move upward, the upward movement of the driving assembly 14 drives the pipe body 22 to rotate, the rotation of the pipe body 22 drives the helical groove 23 to drill the sidewall of the borehole and the positioning hole, the helical groove 23 drills the positioning hole while discharging the drilling slurry in the positioning hole to the borehole, thereby improving the cleaning effect of the positioning hole; while the helical groove 23 drills, the concrete conveyed by the fan blade 21 in the pipe body 22 enters the positioning borehole through the grouting opening at the bottom of the helical groove 23, the concrete assists in cleaning the debris, fills the positioning borehole, and fixes the pipe body 22 and the positioning borehole after the concrete solidifies, thereby improving the positioning effect of the device.

[0060] The driving assembly 14 comprises a mounting seat 25, an internally threaded tooth 26, a driving rack 27, and a clamping piece 28, one end of the mounting seat 25 is connected to the sidewall of the mounting shell 15, the internally threaded tooth 26 is rotatably connected to the mounting seat 25, the thread of the internally threaded tooth 26 is threadedly connected with the pipe thread 24, the gear of the internally threaded tooth 26 is in meshing transmission with the driving rack 27, the driving rack 27 is slidably connected to the sidewall of the mounting seat 25, the bottom end of the driving rack 27 is connected to the top surface of the lower mounting ring 12, a plurality of insertion slots are formed in the sidewall of the driving rack 27, the insertion slots are in insertion fit with the output end of the clamping piece 28, and the other end of the clamping piece 28 is connected to the sidewall of the mounting shell 15.

[0061] The working process and beneficial effects of the above technical solution are as follows:

[0062] The upward movement of the lower mounting ring 12 drives the driving rack 27 to move upward along the mounting seat 25, the internally threaded tooth 26 in meshing transmission with the driving rack 27 rotates, the pipe body 22 threadedly connected with the internally threaded tooth 26 rotates, the driving rack 27 converts the linear motion into the rotation of the pipe body 22, thereby improving the efficiency of mechanical motion; during the upward movement of the driving rack 27, the clamping piece 28 can lock the driving rack 27, thereby avoiding the phenomenon that part of the driving rack 27 slides downward due to uneven force of the lower mounting ring 12, and improving the positioning effect.

[0063] The clamping piece 28 comprises a mounting column 29, a mounting block 30, a moving shell 31, and an insertion rod 32, one end of the mounting column 29 is connected to the sidewall of the mounting shell 15, the other end of the mounting column 29 is provided with the mounting block 30, the moving shell 31 is slidably connected to the mounting column 29, the inner wall of the moving shell 31 is connected to the sidewall of the mounting block 30 through a spring, the end portion of the moving shell 31 is connected to the other end of the insertion rod 32, the other end of the insertion rod 32 is in insertion fit with the insertion slot, and the bottom end of the insertion rod 32 is provided with a chamfer.

[0064] The working process and beneficial effects of the above technical solution are as follows:

[0065] The bottom end of the inserting rod 32 is provided with a chamfer, the inserting rod 32 is inserted into the slot in the side wall of the driving rack 27, the side wall of the driving rack 27 is linearly arrayed with a plurality of slots, when the driving rack 27 moves upward, the chamfer at the bottom end of the inserting rod 32 is in contact with the bottom wall of the slot, the slot extrudes the end of the inserting rod 32 provided with the chamfer from the slot, the other end of the inserting rod 32 stretches the spring connected with the mounting column 29, the end of the inserting rod 32 is in frictional cooperation with the side wall of the driving rack 27, until the end of the inserting rod 32 enters another slot in the side wall of the driving rack 27, the end of the inserting rod 32 re-enters the new slot, the spring is contracted, the mounting column 29 provides guidance and positioning for the inserting rod 32, it can be ensured that during the upward movement of the driving rack 27, due to the chamfer at the end of the inserting rod 32, the inserting rod 32 can be accurately inserted into the slot, and the driving rack 27 is fixed, meanwhile, the inserting rod 32 is prevented from being extruded from the slot when the driving rack 27 slides downward, it is ensured that the clamping piece 28 does not interfere with the continuous movement upward, and the movement downward is blocked, the locking effect of the mechanism is improved, the continuous movement of the mechanism is reduced, and the movement efficiency of the mechanism is improved.

[0066] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, it can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A composite anchor rod consisting of large-diameter GFRP bars and steel bars, characterized in that, include: Threaded steel (1), GFRP reinforcement (2), U-shaped buckle (3), centering bracket (4) and auxiliary fasteners (5), multiple threaded steel (1) are equidistantly arranged around the side wall of the centering bracket (4), the two side walls of each threaded steel (1) are welded to the side wall of the centering bracket (4), the bottom side wall of the threaded steel (1) is fastened to the top side wall of the GFRP reinforcement (2) by multiple U-shaped buckles (3), and multiple auxiliary fasteners (5) are fitted on the GFRP reinforcement (2) from top to bottom; It also includes a positioning device (9) fitted on the side wall of the combined anchor bolt. The positioning device (9) includes an upper mounting ring (10), a positioning mechanism (11), and a lower mounting ring (12). The side wall of the combined anchor bolt is fitted with the inner wall of the upper mounting ring (10). The lower circumferential array of the upper mounting ring (10) is provided with multiple positioning mechanisms (11). The output end of each positioning mechanism (11) is set perpendicular to the side wall of the combined anchor bolt in the opposite direction. The bottom end of each positioning mechanism (11) is connected to the lower mounting ring (12). The positioning mechanism (11) includes: a drill pipe (13), a drive assembly (14), a mounting shell (15), and a suction assembly (16). The bottom surface of the upper mounting ring (10) is connected with a plurality of mounting shells (15) in a circumferential array. The bottom end of the suction assembly (16) is provided in the first through hole of the bottom wall of the mounting shell (15). The bottom end of the suction assembly (16) is connected to the second through hole of the lower mounting ring (12) through a telescopic tube. The output end of the suction assembly (16) is connected to one end of the drill pipe (13). The other end of the drill pipe (13) extends to the side wall of the mounting shell (15). The side wall of the mounting shell (15) is connected to the side wall of the drive assembly (14). The drive assembly (14) is connected to the drill pipe (13). The bottom end of the drive assembly (14) is connected to the upper end face of the lower mounting ring (12). The suction assembly (16) includes: a cannula (17), a sleeve (18), a suction rack (19), a drive gear (20), and a fan blade (21). The bottom end of a guide tube is inserted into the first through hole in the bottom wall of the mounting housing (15). The bottom end of the guide tube is connected to the top end of a telescopic tube, and the top end of the guide tube is connected to the side wall of the cannula (17). One end of the cannula (17) is slidably connected to one end of the sleeve (18). A guide ring is slidably connected to the inner wall of the sleeve (18). The guide ring is fitted onto the drill pipe (…). 13) On the side wall of the end, the other end of the sleeve (18) is provided with a retaining ring to prevent the guide ring from dislodging. A suction rack (19) is installed on the side wall of the sleeve (18). The suction rack (19) meshes with the drive gear (20) for transmission. The drive gear (20) is installed on the rotating shaft. One end of the rotating shaft is rotatably connected to the inner wall of the mounting shell (15). One end of the rotating shaft that passes into the insertion tube (17) is connected to a fan blade (21). The fan blade (21) is located above the through hole connecting the insertion tube (17) and the conduit. The drill pipe (13) includes: a pipe body (22), a spiral groove (23) and a drill pipe thread (24). The pipe body (22) is rotatably connected in the through hole of the side wall of the mounting shell (15). One side wall of the pipe body (22) is connected to the inner wall of the guide ring. The other side wall of the pipe body (22) is provided with a spiral groove (23) and a drill pipe thread (24) at intervals. The bottom of the spiral groove (23) has multiple grouting ports spirally and evenly spaced. Each grouting port is connected to the pipe body (22). The drill pipe thread (24) is threadedly connected to the drive assembly (14).

2. The combined anchor rod of large-diameter GFRP bar and steel bar according to claim 1, characterized in that, The inner wall of the U-shaped buckle (3) is respectively attached to the side wall of the threaded steel (1) and the GFRP bar (2), and a nut is threaded to each end of the U-shaped buckle (3).

3. The combined anchor rod of large-diameter GFRP bar and steel bar according to claim 1, characterized in that, The centering bracket (4) is composed of multiple second threaded steel bars (6). The two side walls of each second threaded steel bar (6) are respectively welded to the side wall of a second threaded steel bar (6). A threaded steel bar (1) is placed in the welding groove between two second threaded steel bars (6). The two side walls of the threaded steel bar (1) are respectively welded to the side wall of a second threaded steel bar (6).

4. The combined anchor rod of large-diameter GFRP bar and steel bar according to claim 1, characterized in that, The auxiliary fastener (5) includes: an annular clamp (7) and a UPVC pipe (8). The annular clamp (7) is coaxially arranged outside the UPVC pipe (8). A positioning cavity is formed between the annular clamp (7) and the UPVC pipe (8). Multiple GFRP ribs (2) are equidistantly inserted into the positioning cavity.

5. The combined anchor rod of large-diameter GFRP bar and steel bar according to claim 1, characterized in that, The drive assembly (14) includes: a mounting base (25), an internal threaded tooth (26), a drive rack (27), and a clamp (28). The side wall of the mounting shell (15) is connected to one end of the mounting base (25). The internal threaded tooth (26) is rotatably connected to the mounting base (25). The thread of the internal threaded tooth (26) is threadedly connected to the drill pipe thread (24). The gear of the internal threaded tooth (26) meshes with the drive rack (27) for transmission. The drive rack (27) is slidably connected to the side wall of the mounting base (25). The bottom end of the drive rack (27) is connected to the top surface of the lower mounting ring (12). The side wall of the drive rack (27) has multiple slots. The slots are plugged into the output end of the clamp (28). The other end of the clamp (28) is connected to the side wall of the mounting shell (15).

6. The combined anchor rod of large-diameter GFRP bar and steel bar according to claim 5, characterized in that, The clip (28) includes: a mounting post (29), a mounting block (30), a movable shell (31), and a plug rod (32). The side wall of the mounting shell (15) is connected to one end of the mounting post (29), and the other end of the mounting post (29) is equipped with the mounting block (30). The movable shell (31) is slidably connected to the mounting post (29). The inner wall of the movable shell (31) is connected to the side wall of the mounting block (30) by a spring. The end of the movable shell (31) is connected to the other end of the plug rod (32). The other end of the plug rod (32) is inserted into the slot. The bottom end of the plug rod (32) is chamfered.

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