Roadway truss anchor cable supporting device and use method

Abstract

The present application relates to the field of roadway anchor cable, specifically to a roadway truss anchor cable supporting device, comprising a roadway body, the surface of the roadway body is provided with an anchor hole, and the surface of the roadway body is fixedly installed with a truss body. The roadway truss anchor cable supporting device and the using method are composed of a guide mechanism and a limiting mechanism. When the guide head moves to the limit position of the anchor hole, the compression spring moves the trapezoidal limiting plate outward with the guide head, so that the trapezoidal limiting plate is lapped on the inner wall of the anchor hole to limit the guide head, the disturbance to the position of the guide head caused by grouting is reduced, and the trapezoidal limiting plate can reinforce the concrete block after grouting, so as to improve the stability of the installed guide head position. When the installation ring is inserted into the anchor hole along with the grouting hose, the guide plate is pressed to fit into the guide groove, at this time, the steel ball on the surface of the guide plate is lapped with the inner wall of the anchor hole, the contact area of the installation ring and the inner wall of the anchor hole is reduced, the friction resistance is reduced, and the installation is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of roadway anchor cable, in particular to a roadway truss anchor cable supporting device and a using method thereof. BACKGROUND

[0002] The roadway needs to be supported by a truss after excavation, and an anchor cable needs to be installed between the truss and the wall of the roadway to improve the supporting strength of the truss on the roadway.

[0003] The position of the anchor cable guide head of some existing roadway support devices is only limited by the pouring of concrete slurry and the installation hole. Since the force generated during the tensioning of the steel strand is large, the stability of the installation of the anchor cable guide head is low when the position is only limited by the concrete. The stability is poor, and the guide head is difficult to limit during the grouting process, which causes certain disturbance. The limiting ring of some existing roadway support anchor cables is easy to scratch the inner wall of the installation hole during the process of penetrating the installation hole, which affects the stability of the installation hole, and the penetration efficiency of the anchor cable is low during the scratching process, which reduces the work efficiency. SUMMARY

[0004] The present application relates to the field of roadway anchor cable, in particular to a roadway truss anchor cable supporting device and a using method thereof. To achieve the above-mentioned purpose, the present application provides the following technical scheme: a roadway truss anchor cable supporting device, comprising a roadway body, an anchor hole is formed in the surface of the roadway body, a truss body is fixedly installed on the surface of the roadway body, an anchor plate is fixedly installed on the surface of the truss body, a grouting hose is fixedly connected to the middle part of the anchor plate, an installation ring is fixedly connected to the surface of the grouting hose, steel strands are movably connected around the installation ring, the grouting hose and the steel strands are movably inserted into the inside of the anchor hole, a guide mechanism is movably connected to the surface of the installation ring, and the right ends of the four steel strands are fixedly connected to the surface of the anchor plate.

[0005] A guide head is fixedly connected to the left end of the grouting hose, the left end of the steel strand is fixedly connected to the surface of the guide head, and a limiting mechanism is movably connected to the side wall of the guide head.

[0006] Preferably, the guide mechanism comprises a guide groove, the guide groove is provided with four guide grooves, the four guide grooves are equidistantly formed on the surface of the installation ring along the circumference, a support rod is fixedly connected to the inner wall of the guide groove, a guide plate is rotatably connected to the surface of the support rod, a steel ball is rotatably connected to one side of the guide plate, and a connecting rod is hingedly connected to the other side of the guide plate.

[0007] The inner wall of the guide groove is fixedly connected with a guide rod, the surface of the guide rod is slidably connected with a guide ring, the surface of the guide ring is hingedly connected with one end of the connecting rod, and the surface of the guide rod movably sleeves a reset spring.

[0008] Preferably, the inner wall of the guide groove is fixedly connected with a pad, the guide rod is fixedly connected between the pad and the inner wall of the guide groove, one end of the reset spring is overlapped with the surface of the pad, and the other end of the reset spring is overlapped with the inner wall of the guide groove.

[0009] Preferably, the limiting mechanism comprises four limiting grooves which are equidistantly arranged on the surface of the guide head along the circumference, a trapezoidal limiting plate movably connected in the limiting groove, a compression spring fixedly connected between the surface of the trapezoidal limiting plate and the inner wall of the limiting groove, a sawtooth arranged on the right side of the trapezoidal limiting plate, and the right side of the trapezoidal limiting plate is overlapped with the inner wall of the anchor hole.

[0010] The middle part of the guide head is provided with a grouting hole matched with the limiting groove.

[0011] Preferably, the inner wall of the limiting groove is provided with a sliding groove on both sides, the trapezoidal limiting plate is fixedly connected with a sliding block on both sides, and the two sliding blocks are slidably connected in the sliding groove.

[0012] Preferably, the surface of the trapezoidal limiting plate is rotatably connected with a ball, the side wall of the trapezoidal limiting plate is arc-shaped, and the trapezoidal limiting plate is made of a steel plate.

[0013] Preferably, the guide head is provided with a grout outlet hole matched with the grouting hole on both sides, and the surface of the guide head is provided with a screw groove.

[0014] A use method of a roadway truss anchor cable supporting device, characterized in that the method comprises the following steps:

[0015] S1, the anchor plate is fixedly installed on the surface of the truss body, and the grouting hose and the steel strand on the anchor plate are inserted into the inner part of the anchor hole, at this time, the ball at the position of the guide head can effectively reduce the friction between the trapezoidal limiting plate and the inner wall of the anchor hole, and the guide head is conveniently inserted into the inner part of the anchor hole;

[0016] S2, when the installation ring in the middle part of the grouting hose moves to the inner part of the anchor hole, the guide plate movably connected with the surface of the installation ring is pressed to fit the inner wall of the guide groove, at this time, the connecting rod hingedly connected with the other side of the guide plate presses the guide ring to slide on the surface of the guide rod, so that the reset spring is pressed, and when the steel ball on one side of the guide plate contacts with the inner wall of the anchor hole, the contact area is effectively reduced, so as to reduce the friction resistance when the installation ring moves on the inner wall of the anchor hole.

[0017] S3. When the guide head moves to the extreme position of the anchor hole, the installation ring stops moving. At this time, the guide ring moves back to its original position under the action of the gradually restored elastic force of the reset spring, so that the guide ring moves with the connecting rod, causing one end of the four guide plates on the installation ring to open and press against the inner wall of the anchor hole, playing a certain limiting role and improving the stability of the installation of the middle part of the anchor cable;

[0018] S4. After the guide head moves to the extreme position of the anchor hole, the compression spring presses the trapezoidal limit plate to move outside the limit groove. The guide head is limited by the overlap of the four trapezoidal limit plates and the inner wall of the anchor hole. The serrations on the trapezoidal limit plates fit the inner wall of the anchor hole to increase the friction resistance of the guide head position, thereby improving the stability of the trapezoidal limit plates after movement.

[0019] S5. Finally, grouting is performed into the anchor hole through the grouting hose, so that the slurry flows into the interior of the limit groove through the grouting hole, and the slurry fills the interior of the limit groove to further press the moved trapezoidal limit plate. After the slurry dries, it can limit the position of the trapezoidal limit plate and reinforce the concrete at the guide head position. At the same time, the slurry inside the grouting hose flows out from the slurry outlet position of the guide head to fill the interior of the anchor hole. Finally, after the concrete dries, the steel strand is prestressed to complete the support operation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, through the coordinated use of components such as the guide head, trapezoidal limit plate and compression spring, when the guide head moves to the extreme position of the anchor hole, the compression spring moves the trapezoidal limit plate toward the outside of the guide head, so that the trapezoidal limit plate overlaps the inner wall of the anchor hole to limit the guide head, thereby reducing the disturbance to the guide head position caused by grouting, and after grouting, the trapezoidal limit plate can reinforce the concrete block, thereby improving the stability of the guide head position after installation.

[0022] In the present invention, through the coordinated use of components such as the mounting ring, the guide plate and the steel balls, when the mounting ring is inserted into the anchor hole along with the grouting hose, the guide plate is pressed to fit into the inside of the guide groove. At this time, the steel balls on the surface of the guide plate overlap with the inner wall of the anchor hole, reducing the contact area between the mounting ring and the inner wall of the anchor hole, reducing friction resistance, facilitating installation, and improving work efficiency.

[0023] In the present invention, through the coordinated use of components such as the guide plate, the connecting rod and the return spring, when the grouting hose and the guide head are installed, the installation ring stops moving. At this time, the return spring gradually recovers and causes the guide ring to slide on the surface of the guide rod, so that the connecting rod presses the guide plate to open. At this time, the inclined surfaces on the four guide plates penetrate into the anchor hole, thereby improving the installation stability between the middle part of the grouting hose and the inner wall of the anchor hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a cross-sectional view of the positions of the tunnel body and the truss body of the present invention;

[0025] Figure 2 It is a front cross-sectional view of the anchor hole and the guide head position of the present invention;

[0026] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0027] Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle;

[0028] Figure 5 A cross-sectional view of the mounting ring and the steel strand in the present invention;

[0029] Figure 6 It is a right sectional view of the position of the guide head and the trapezoidal limiting plate in the present invention.

[0030] In the figure: 1. Tunnel body; 2. Anchor hole; 3. Truss body; 4. Anchor plate; 5. Grouting hose; 6. Mounting ring; 7. Steel strand; 8. Guide mechanism; 801. Guide groove; 802. Support rod; 803. Guide plate; 804. Steel ball; 805. Connecting rod; 806. Guide rod; 807. Guide ring; 808. Return spring; 9. Guide head; 10. Limiting mechanism; 1001. Limiting groove; 1002. Trapezoidal limiting plate; 1003. Compression spring; 1004. Sawtooth; 1005. Grouting hole. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technical personnel in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] See also Figures 1 to 6 The present invention provides a technical solution: a tunnel truss anchor cable support device, comprising a tunnel body 1, an anchor hole 2 is opened on the surface of the tunnel body 1, a truss body 3 is fixedly installed on the surface of the tunnel body 1, an anchor plate 4 is fixedly installed on the surface of the truss body 3, a grouting hose 5 is fixedly connected to the middle of the anchor plate 4, a mounting ring 6 is fixedly connected to the surface of the grouting hose 5, steel strands 7 are movably connected around the mounting ring 6, the grouting hose 5 and the steel strands 7 are movably plugged into the inside of the anchor hole 2, a guide mechanism 8 is movably connected to the surface of the mounting ring 6, and the right ends of the four steel strands 7 are fixedly connected to the surface of the anchor plate 4.

[0033] The left end of the grouting hose 5 is fixedly connected with a guide head 9, and the left end of the steel strand 7 is fixedly connected with the surface of the guide head 9. The side wall of the guide head 9 is movably connected with a limiting mechanism 10.

[0034] As shown in Figure 2 , Figure 3 and Figure 5 in the embodiment, the guide mechanism 8 comprises guide grooves 801, four of which are equidistantly arranged on the surface of the mounting ring 6 along the circumference. The inner wall of the guide groove 801 is fixedly connected with a support rod 802, the surface of the support rod 802 is rotatably connected with a guide plate 803, one side of the guide plate 803 is rotatably connected with a steel ball 804, and the other side of the guide plate 803 is hingedly connected with a connecting rod 805. It should be noted that one end of the guide plate 803 is provided with an inclined surface, which facilitates the guide plate 803 to be limited by being inserted into the anchor hole 2 through the inclined surface, thereby improving the stability.

[0035] The inner wall of the guide groove 801 is fixedly connected with a guide rod 806, the surface of the guide rod 806 is slidably connected with a guide ring 807, the surface of the guide ring 807 is hingedly connected with one end of the adjacent connecting rod 805, and the surface of the guide rod 806 movably sleeves a return spring 808.

[0036] As shown in Figure 2 and Figure 3 in the embodiment, the inner wall of the guide groove 801 is fixedly connected with a pad, the guide rod 806 is fixedly connected between the pad and the inner wall of the adjacent guide groove 801, one end of the return spring 808 is overlapped with the surface of the pad, and the other end of the return spring 808 is overlapped with the inner wall of the guide groove 801.

[0037] As shown in Figure 2 , Figure 4 and Figure 6 in the embodiment, the limiting mechanism 10 comprises limiting grooves 1001, four of which are equidistantly arranged on the surface of the guide head 9 along the circumference. The inner part of the limiting groove 1001 is movably connected with a trapezoidal limiting plate 1002, the surface of the trapezoidal limiting plate 1002 is fixedly connected with a compression spring 1003 between the inner wall of the limiting groove 1001, the right side of the trapezoidal limiting plate 1002 is provided with a sawtooth 1004, and the right side of the trapezoidal limiting plate 1002 is overlapped with the inner wall of the anchor hole 2.

[0038] The middle part of the guide head 9 is provided with a grouting hole 1005 matched with the limiting groove 1001. It should be noted that the inner wall of the grouting hole 1005 is tapered, which can increase the pressure during the grouting process, so that the grouting liquid can be pushed and pressed on the surface of the trapezoidal limiting plate 1002 when being transported into the limiting groove 1001.

[0039] As shown in Figure 2 andFigure 4 As shown, the inner wall of the limiting groove 1001 is provided with a sliding groove on both sides, and the trapezoidal limiting plate 1002 is fixedly connected with a sliding block on both sides, and the two sliding blocks are slidingly connected in the sliding grooves. It should be noted that the sliding block and the sliding groove improve the stability of the lifting trapezoidal limiting plate 1002, and play a positioning and guiding role.

[0040] In this embodiment, as shown in Figure 2 and Figure 4 , the surface of the trapezoidal limiting plate 1002 is rotatably connected with a ball, the side wall of the trapezoidal limiting plate 1002 is arc-shaped, and the trapezoidal limiting plate 1002 is a steel plate. It should be noted that the trapezoidal limiting plate 1002 made of steel material can reinforce the dry concrete block after cooperating with the concrete.

[0041] In this embodiment, as shown in Figure 2 and Figure 4 , the two sides of the guide head 9 are provided with a grouting hole 1005 matched with the grouting hole 1005, and the surface of the guide head 9 is provided with a screw groove. It should be noted that the screw groove can increase the friction between the guide head 9 and the concrete block after the concrete is dry.

[0042] In this embodiment, as shown in Figures 1 to 6 , a method for using a roadway truss anchor cable support device, characterized by comprising the following steps:

[0043] S1, the anchor plate 4 is fixedly installed on the surface of the truss body 3, and the grouting hose 5 and the steel strand 7 on the anchor plate 4 are inserted into the inside of the anchor hole 2, at this time the ball at the position of the guide head 9 can effectively reduce the friction between the trapezoidal limiting plate 1002 and the inner wall of the anchor hole 2, and the guide head 9 is convenient to insert into the inside of the anchor hole 2;

[0044] S2, when the installation ring 6 in the middle of the grouting hose 5 moves to the inside of the anchor hole 2, the guide plate 803 movably connected to the surface of the installation ring 6 is pressed to fit the inner wall of the guide groove 801, at this time the other side of the guide plate 803 is hinged to the connecting rod 805, the connecting rod 805 is pressed to slide on the surface of the guide rod 806, the reset spring 808 is pressed, and when the steel ball on one side of the guide plate 803 contacts with the inner wall of the anchor hole 2, the contact area is effectively reduced, thereby reducing the friction resistance when the installation ring 6 moves on the inner wall of the anchor hole 2;

[0045] S3, when the guide head 9 moves to the limit position of the anchor hole 2, the installation ring 6 stops moving, at this time the guide ring 807 moves back under the action of the elastic force of the reset spring 808, the guide ring 807 moves with the connecting rod 805, the four guide plates 803 on one end of the installation ring 6 are opened and pressed on the inner wall of the anchor hole 2, which plays a certain limiting role and improves the stability of the installation in the middle of the anchor cable;

[0046] S4, and the guide head 9 moves to the limit position of the anchor hole 2, the compression spring 1003 presses the trapezoidal limiting plate 1002 to move to the outside of the limiting groove 1001, the four trapezoidal limiting plates 1002 are connected with the inner wall of the anchor hole 2 to limit the guide head 9, and the sawtooth 1004 on the trapezoidal limiting plate 1002 is combined with the inner wall of the anchor hole 2 to increase the friction resistance of the position of the guide head 9, and the stability of the trapezoidal limiting plate 1002 after moving is improved;

[0047] S5, finally, the grouting hose 5 is used to inject grout into the anchor hole 2, the grout flows into the inside of the limiting groove 1001 through the grouting hole 1005, the grout fills in the inside of the limiting groove 1001 to further press the trapezoidal limiting plate 1002 after moving, the grout is dried to limit the position of the trapezoidal limiting plate 1002, the grout can reinforce the position of the guide head 9, and the grout in the grouting hose 5 flows out from the grouting hole of the guide head 9 to fill in the inside of the anchor hole 2, finally, the concrete is dried to prestress the steel strand 7, and the supporting work is completed.

[0048] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A tunnel truss anchor cable support device, comprising a tunnel body (1), characterized in that: An anchor hole (2) is provided on the surface of the tunnel body (1), a truss body (3) is fixedly installed on the surface of the tunnel body (1), an anchor plate (4) is fixedly installed on the surface of the truss body (3), a grouting hose (5) is fixedly connected to the middle of the anchor plate (4), a mounting ring (6) is fixedly connected to the surface of the grouting hose (5), and steel strands (7) are movably connected around the mounting ring (6), the grouting hose (5) and the steel strands (7) are movably plugged into the inside of the anchor hole (2), a guide mechanism (8) is movably connected to the surface of the mounting ring (6), and the right ends of the four steel strands (7) are fixedly connected to the surface of the anchor plate (4); The left end of the grouting hose (5) is fixedly connected to a guide head (9), the left end of the steel strand (7) is fixedly connected to the surface of the guide head (9), and the side wall of the guide head (9) is movably connected to a limiting mechanism (10); The guide mechanism (8) includes a guide groove (801), wherein the guide grooves (801) are provided in four numbers, and the four guide grooves (801) are equidistantly arranged on the surface of the mounting ring (6) along the circumference, the inner wall of the guide groove (801) is fixedly connected to a support rod (802), the surface of the support rod (802) is rotatably connected to a guide plate (803), one side of the guide plate (803) is rotatably connected to a steel ball (804), and the other side of the guide plate (803) is hinged to a connecting rod (805); The inner wall of the guide groove (801) is fixedly connected to a guide rod (806), the surface of the guide rod (806) is slidably connected to a guide ring (807), the surface of the guide ring (807) is hinged to one end of the adjacent connecting rod (805), and the surface of the guide rod (806) is movably sleeved with a return spring (808); The limiting mechanism (10) includes a limiting groove (1001), wherein the limiting grooves (1001) are provided in four numbers, and the four limiting grooves (1001) are equidistantly provided on the surface of the guide head (9) along the circumference, the limiting groove (1001) is internally movably connected with a trapezoidal limiting plate (1002), a compression spring (1003) is fixedly connected between the surface of the trapezoidal limiting plate (1002) and the inner wall of the limiting groove (1001), a sawtooth (1004) is provided on the right side of the trapezoidal limiting plate (1002), and the right side of the trapezoidal limiting plate (1002) overlaps the inner wall of the anchor hole (2); A grouting hole (1005) matching the limiting groove (1001) is provided in the middle of the guide head (9).

2. A tunnel truss anchor cable support device according to claim 1, characterized in that: A pad is fixedly connected to the inner wall of the guide groove (801), the guide rod (806) is fixedly connected between the pad and the inner wall of the adjacent guide groove (801), one end of the return spring (808) overlaps the surface of the pad, and the other end of the return spring (808) overlaps the inner wall of the guide groove (801).

3. The tunnel truss anchor cable support device according to claim 2, characterized in that: Slide grooves are provided on both sides of the inner wall of the limiting groove (1001), and sliders are fixedly connected to both sides of the trapezoidal limiting plate (1002), and the two sliders are respectively slidably connected to the inside of the slide grooves.

4. The tunnel truss anchor cable support device according to claim 3, characterized in that: The surface of the trapezoidal limiting plate (1002) is rotatably connected to a ball bearing, the side wall of the trapezoidal limiting plate (1002) is configured to be arc-shaped, and the trapezoidal limiting plate (1002) is configured to be a steel plate.

5. The tunnel truss anchor cable support device according to claim 4, characterized in that: Both sides of the guide head (9) are provided with grouting holes that match the grouting holes (1005), and the surface of the guide head (9) is provided with screw grooves.

6. The method for using the tunnel truss anchor cable support device according to claim 5, characterized in that: The steps include: S1. The anchor plate (4) is fixedly mounted on the surface of the truss body (3), and the grouting hose (5) and the steel strand (7) on the anchor plate (4) are inserted into the interior of the anchor hole (2). At this time, the ball bearing at the position of the guide head (9) can effectively reduce the friction between the trapezoidal limit plate (1002) and the inner wall of the anchor hole (2), making it easier for the guide head (9) to be inserted into the interior of the anchor hole (2); S2. When the mounting ring (6) in the middle of the grouting hose (5) moves toward the inside of the anchor hole (2), the guide plate (803) movably connected to the surface of the mounting ring (6) is pressed against the inner wall of the guide groove (801). At this time, the connecting rod (805) hinged on the other side of the guide plate (803) presses the guide ring (807) to slide on the surface of the guide rod (806), so that the return spring (808) is compressed, and the steel ball on one side of the guide plate (803) effectively reduces the contact area when contacting the inner wall of the anchor hole (2), thereby reducing the friction resistance of the mounting ring (6) when moving on the inner wall of the anchor hole (2); S3. When the guide head (9) moves to the extreme position of the anchor hole (2), the installation ring (6) stops moving. At this time, the guide ring (807) moves and resets under the action of the gradually restored elastic force of the reset spring (808), so that the guide ring (807) moves with the connecting rod (805), so that one end of the four guide plates (803) on the installation ring (6) opens and presses against the inner wall of the anchor hole (2), playing a certain limiting role and improving the stability of the installation of the middle part of the anchor cable; S4. After the guide head (9) moves to the extreme position of the anchor hole (2), the compression spring (1003) presses the trapezoidal limiting plate (1002) to move toward the outside of the limiting groove (1001). The guide head (9) is limited by the four trapezoidal limiting plates (1002) overlapping the inner wall of the anchor hole (2). The serrations (1004) on the trapezoidal limiting plates (1002) fit the inner wall of the anchor hole (2) to increase the friction resistance of the guide head (9) position, thereby improving the stability of the trapezoidal limiting plates (1002) after movement. S5. Finally, grouting is performed into the anchor hole (2) through the grouting hose (5), so that the grouting liquid flows into the interior of the limit groove (1001) through the grouting hole (1005), and the grouting liquid fills the interior of the limit groove (1001) and further presses the moved trapezoidal limit plate (1002). After the grouting liquid dries, it can limit the position of the trapezoidal limit plate (1002) and reinforce the concrete at the position of the guide head (9). At the same time, the grouting liquid inside the grouting hose (5) flows out from the grouting hole position of the guide head (9) and fills the interior of the anchor hole (2). Finally, after the concrete dries, the steel strand (7) is prestressed to complete the support operation.

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