Assembled anchor bolt

Abstract

The assembled anchor rod is used to solve the technical problem mentioned in the background technology that some of the current assembled anchor rods often break at the anchor rod joints during the process of being driven into the rock formation. The assembled anchor rod comprises a coaxial driving rod and an additional rod, wherein one end of the driving rod is provided with a threaded hole coaxial with the driving rod, the additional rod is a screw rod and one end of which is threadedly connected in the threaded hole, a connecting ring is fixedly sleeved on the additional rod for synchronous movement with the screwing of the additional rod and abutment with the end of the driving rod, a collar is slidably sleeved on the periphery of the driving rod for sliding sleeves on the circumferential periphery of the abutment between the driving rod and the connecting ring as the driving rod is driven. The assembly of the assembled anchor rod is simple, and the structural strength of the assembled joints of the anchor rods can be enhanced during the process of being driven into the rock formation. The assembled anchor rod is mainly used for anchoring in the surrounding rock to support the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rod production, and in particular to an assembled anchor rod which can be quickly assembled and can ensure the use strength of the assembled connection. Background Art

[0002] my country is a vast country with different topography and landforms in different geographical locations. With the vigorous development of my country's infrastructure, public transportation facilities have become more sound. Among them, the vigorous construction of roads has closely connected different geographical regions of my country into a whole. The increase in road construction mileage has strengthened cultural exchanges between different regions and played an irreplaceable role in my country's prosperity.

[0003] During road construction, especially in mountainous areas, construction units often need to open tunnels in the mountains to connect the roads. The tunnel construction process is complicated. With the development of science and technology, equipment such as shield machines have begun to be put into use, which can shorten the construction time. However, there are also construction methods that use manual and mechanical excavation. During the excavation process, the inner wall of the tunnel needs to be supported in time. The initial support method often uses anchor rods and shotcrete support.

[0004] The purpose of driving anchor rods is to firmly connect the inner wall of the tunnel facing the air with the stratum outside the tunnel, thereby preventing rocks and rock blocks on the inner wall of the tunnel from falling off and preventing the inner wall of the tunnel from becoming unstable, thereby ensuring the stability of the inner wall of the tunnel.

[0005] With the needs of construction, longer-sized anchor rods are gradually being used, and the demand for their application is increasing. At present, there are one-piece longer-sized anchor rods on the market, but these anchor rods are quite inconvenient to carry and transfer due to their long length, which brings certain resistance to construction. At present, there are also some assembled anchor rods on the market, but some assembled anchor rods have poor assembly quality and often break at the joints of the anchor rods during the operation of driving them into the rock formation. Summary of the invention

[0006] The purpose of the present invention is to propose an assembled anchor rod in view of the deficiencies of the prior art, so as to solve the technical problem mentioned in the background art that some currently assembled anchor rods often break at the joints of the anchor rods during the process of being driven into the rock formation.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The assembled anchor rod comprises a coaxial driving rod and an additional rod, wherein a threaded hole coaxial with the driving rod is opened inward at one end of the driving rod, the additional rod is a screw rod and one end of which is threadedly connected in the threaded hole, a connecting ring is fixedly sleeved on the additional rod for synchronous movement with the screwing of the additional rod and abutment with the end of the driving rod, and a ring is slidably sleeved on the periphery of the driving rod for slidingly sleeved on the circumferential periphery of the abutment between the driving rod and the connecting ring as the driving rod is driven.

[0009] Working principle: transport batches of the driving rods and additional rods to the construction site, and then assemble the driving rods and additional rods on site;

[0010] The specific assembly process is to screw the additional rod into the threaded hole. As the additional rod is screwed in, the connecting ring moves synchronously with the additional rod. When the additional rod is screwed into place, the connecting ring abuts against the end of the driving rod, and the assembly process is completed.

[0011] Afterwards, holes are drilled on the inner wall of the tunnel according to the designed anchor rod driving position and driving angle, using construction equipment to drill holes at the position and drilling angle set on the inner wall of the tunnel, and the drilling hole diameter is adapted to the diameter of the driving rod.

[0012] Then the assembled driving rod and additional rod are inserted into the drill hole as a whole. First, the driving rod is aligned with the drill hole, and then the driving rod is inserted into the drill hole. As the driving rod is continuously inserted, the collar will touch the side wall of the drill hole during the process. At this time, the end of the additional rod is struck with the help of a construction tool, so that the collar enters the drill hole by squeezing the side wall of the drill hole. At this time, the side wall of the drill hole will generate a thrust on the collar, and the thrust will push the collar to slide along the axis of the driving rod toward the direction of the connecting ring. As the additional rod is continuously struck and pushed in, the collar finally slides to the circumferential periphery of the abutment between the driving rod and the connecting ring. This process ensures the assembly strength between the driving rod and the additional rod.

[0013] During the entire implantation process of the structure of the present invention, firstly, as the collar is inserted into the borehole, the collar can squeeze the inner wall of the borehole, so that the structure of the present invention can be fully filled in the borehole, thereby ensuring that the structure of the present invention fully plays the anchoring role of the anchor rod. In addition, during this process, as the collar advances, the collar slides to the circumferential periphery of the abutment between the driven rod and the connecting ring under the thrust of the side wall of the borehole, thereby ensuring the assembly strength between the driven rod and the additional rod during the entire implantation process of the present invention. Thereafter, materials such as anchoring agents are used to fill the gap between the structure of the present invention and the borehole. During the implantation process of the present invention into the rock formation, not only the assembly strength of the structure of the present invention is ensured, but also the structure of the present invention can be fully filled in the borehole, fully playing the anchoring role of the anchor rod, thereby achieving a dual technical effect.

[0014] The beneficial effects of the present invention are:

[0015] The present invention uses the driving rod and the additional rod, and the ring is slidably set on the driving rod, and the connecting ring is fixedly sleeved on the additional rod. When assembling the present invention, it is only necessary to screw the additional rod thread into the threaded hole. This assembly method is convenient and fast.

[0016] During the entire implantation process of the structure of the present invention, firstly, as the collar is inserted into the borehole, the collar can squeeze the inner wall of the borehole, so that the structure of the present invention can be fully filled in the borehole, thereby ensuring that the structure of the present invention fully plays the anchoring role of the anchor rod. In addition, during this process, as the collar advances, the collar slides to the circumferential periphery of the abutment between the driven rod and the connecting ring under the thrust of the side wall of the borehole, thereby ensuring the assembly strength between the driven rod and the additional rod during the entire implantation process of the present invention. Thereafter, materials such as anchoring agents are used to fill the gap between the structure of the present invention and the borehole. During the implantation process of the present invention into the rock formation, not only the assembly strength of the structure of the present invention is ensured, but also the structure of the present invention can be fully filled in the borehole, fully playing the anchoring role of the anchor rod, thereby achieving a dual technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0018] Explanation of the reference numerals: driving rod 1, additional rod 2, threaded hole 3, connecting ring 4, sleeve ring 5, convex ring 6, annular groove 7, backing plate 8, protrusion 9, sliding groove 10, sliding block 11. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1As shown, the assembled anchor rod comprises a coaxial driving rod 1 and an additional rod 2, wherein a threaded hole 3 coaxial with the driving rod 1 is opened inward at one end of the driving rod 1, the additional rod 2 is a screw rod and one end of which is threadedly connected in the threaded hole 3, a connecting ring 4 is fixedly sleeved on the additional rod 2 for synchronous movement with the screwing of the additional rod 2 and abutting against the end of the driving rod 1, a collar 5 is slidably sleeved on the periphery of the driving rod 1 for slidingly sleeved on the circumferential periphery of the abutment between the driving rod 1 and the connecting ring 4 as the driving rod 1 is driven.

[0021] like Figure 1 As shown, during the whole implantation process of the structure of the present invention, firstly, as the collar 5 is inserted into the borehole, the collar 5 can squeeze the inner wall of the borehole, so that the structure of the present invention can be fully filled in the borehole, thereby ensuring that the structure of the present invention fully plays the anchoring role of the anchor rod. In addition, during the process, as the collar 5 advances, the collar 5 slides to the circumferential periphery of the abutment between the driven rod 1 and the connecting ring 4 under the thrust of the side wall of the borehole, thereby ensuring the assembly strength between the driven rod 1 and the additional rod 2 during the whole implantation process of the present invention. Afterwards, materials such as anchoring agents are used to fill the gap between the structure of the present invention and the borehole. During the implantation process of the present invention into the rock formation, not only the assembly strength of the structure of the present invention is ensured, but also the structure of the present invention can be fully filled in the borehole, fully playing the anchoring role of the anchor rod, thereby achieving a dual technical effect.

[0022] like Figure 1 As shown, a convex ring 6 coaxial with the connecting ring 4 is fixed at the end of the connecting ring 4, and an annular groove 7 coaxial with the driving rod 1 is formed at the end of the driving rod 1, and the convex ring 6 is clamped in the annular groove 7. During the process of screwing the additional rod 2, the convex ring 6 can be clamped in the annular groove 7. This method can further strengthen the connection between the additional rod 2 and the driving rod 1, so that the driving rod 1, the additional rod 2 and the connecting ring 4 form a solid whole. The convex ring 6 is integrally formed with the connecting ring 4, and this method is to ensure the overall strength of the connecting ring 4 and the convex ring 6 as a whole.

[0023] like Figure 1As shown, the other end of the driving rod 1 is a conical tip. The end of the driving rod 1 corresponds to the drilling position in the tunnel, and then an external force is applied to the other end of the additional rod 2, so that the end of the driving rod 1 with a conical tip can enter the borehole, and the structure of the present invention needs to be hit later, so as to assist the present invention to enter the borehole. At this time, the end of the driving rod 1 is set as a tip structure, so that the end of the driving rod 1 can be more smoothly driven into the rock formation at the bottom of the borehole, so as to completely ensure that the structure of the present invention is implanted in place. A pad 8 is fixed to the other end of the additional rod 2. By hitting the pad 8, a working condition that is more convenient for the operator to operate is provided. The pad 8 is provided with a plurality of protrusions 9 on the surface of the pad 8. The protrusions 9 are mainly provided to prevent the hitting tool from slipping on the pad 8 during the hitting of the pad 8, which is not only conducive to ensuring the personal safety of the operator, but also conducive to quickly implanting the structure of the present invention into the borehole and improving the working efficiency.

[0024] like Figure 1 As shown, the driving rod 1 is provided with a slide groove 10, and a slider 11 is provided in the slide groove 10. The slider 11 is fixedly connected to the inner wall of the collar 5. This sliding arrangement of the collar 5 is simpler, which is beneficial to saving materials and reducing manufacturing costs. The collar 5 is away from the end of the pad 8 and a conical slope is formed between the outer wall of the collar 5 and the inner wall of the collar 5, that is, the end of the collar 5 away from the pad 8 is provided with a conical slope, and the conical slope extends from the outer wall of the collar 5 to the inner wall of the collar 5. When the collar 5 starts to enter the borehole, the end of the collar 5 away from the pad 8 first enters the borehole and squeezes the side wall of the borehole, so that the end of the collar 5 is set to have a conical slope. This form can reduce the rock resistance of the collar 5 when entering the borehole, thereby further reducing the rock resistance of the present invention.

[0025] Working principle: transport batches of the driving rods 1 and the additional rods 2 to the construction site, and then assemble the driving rods 1 and the additional rods 2 on site;

[0026] The specific assembly process is to screw the additional rod 2 into the threaded hole 3. As the additional rod 2 is screwed in, the connecting ring 4 moves synchronously with the additional rod 2. When the additional rod 2 is screwed into place, the connecting ring 4 abuts against the end of the driving rod 1, and the assembly process is completed.

[0027] Afterwards, holes are drilled on the inner wall of the tunnel according to the designed anchor rod driving position and driving angle, using construction equipment to drill holes at the set position and drilling angle on the inner wall of the tunnel, and the drilling hole diameter is adapted to the diameter of the driving rod 1.

[0028] Then the assembled driving rod 1 and additional rod 2 are inserted into the borehole as a whole. First, the driving rod 1 is aligned with the borehole, and then the driving rod 1 is inserted into the borehole. As the driving rod 1 is continuously inserted, the collar 5 will touch the side wall of the borehole during the process. At this time, the pad 8 at the end of the additional rod 2 is hit with the help of a construction tool, so that the collar 5 enters the borehole in a manner of squeezing the side wall of the borehole. At this time, the side wall of the borehole will generate a thrust on the collar 5, and the thrust will push the collar 5 to slide along the axis of the driving rod 1 toward the direction of the connecting ring 4. As the additional rod 2 is continuously hit and pushed in, the collar 5 finally slides to the circumferential periphery of the abutment between the driving rod 1 and the connecting ring 4. This process ensures the assembly strength between the driving rod 1 and the additional rod 2.

[0029] During the entire implantation process of the structure of the present invention, firstly, as the collar 5 is inserted into the borehole, the collar 5 can squeeze the inner wall of the borehole, so that the structure of the present invention can be fully filled in the borehole, thereby ensuring that the structure of the present invention fully plays the anchoring role of the anchor rod. In addition, during this process, as the collar 5 advances, the collar 5 slides to the circumferential periphery of the abutment between the driving rod 1 and the connecting ring 4 under the thrust of the side wall of the borehole, thereby ensuring the assembly strength between the driving rod 1 and the additional rod 2 during the entire implantation process of the present invention. Afterwards, materials such as anchoring agents are used to fill the gap between the structure of the present invention and the borehole. During the implantation process of the present invention into the rock formation, not only the assembly strength of the structure of the present invention is ensured, but also the structure of the present invention can be fully filled in the borehole, fully playing the anchoring role of the anchor rod, thereby achieving a dual technical effect.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. Assembled anchor, characterized by: The invention comprises a driving rod (1) and an additional rod (2) with a coaxial line. A threaded hole (3) coaxial with the driving rod (1) is opened inward at one end of the driving rod (1), and the other end of the driving rod (1) is a conical tip. The additional rod (2) is a screw rod and one end of the additional rod (2) is threadedly connected in the threaded hole (3). A connecting ring (4) is fixedly sleeved on the additional rod (2) for synchronous movement with the screwing of the additional rod (2) and abutment with the end of the driving rod (1). A collar (5) is slidably sleeved on the periphery of the driving rod (1) for sliding sleeve on the circumferential periphery of the abutment between the driving rod (1) and the connecting ring (4) as the driving rod (1) is driven. A sliding groove (10) is opened on the driving rod (1), and a sliding block (11) is arranged in the sliding groove (10). The sliding block (11) is fixedly connected to the inner wall of the collar (5).

2. The assembled anchor rod according to claim 1, characterized in that: A convex ring (6) coaxial with the connecting ring (4) is fixed at the end of the connecting ring (4), and an annular groove (7) coaxial with the driving rod (1) is formed at the end of the driving rod (1), and the convex ring (6) is clamped in the annular groove (7).

3. The assembled anchor rod according to claim 2, characterized in that: The convex ring (6) and the connecting ring (4) are formed integrally.

4. The assembled anchor rod according to claim 1, characterized in that: A pad (8) is fixed to the other end of the additional rod (2).

5. The assembled anchor rod according to claim 4, characterized in that: The backing plate (8) is provided with a plurality of protrusions (9) on its surface outward.

6. The assembled anchor rod according to claim 4, characterized in that: An end of the collar (5) away from the backing plate (8) is provided with a conical inclined surface, and the conical inclined surface extends from the outer wall of the collar (5) to the inner wall of the collar (5).

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