Rear reaming self-locking anchor rod capable of being rapidly installed

Abstract

The utility model discloses a back reaming self-locking anchor rod capable of being quickly installed, which comprises an anchor rod, the anchor rod comprises a rod body, a gathering cavity is arranged at the lower part in the rod body, and a screw plate is arranged at the lower part of the gathering cavity; an impeller is arranged in the gathering cavity, a shaft rod of the impeller is fixedly connected with a threaded rod, the threaded rod is in threaded connection in a threaded hole in the center of a threaded plate, the lower end of the threaded rod is fixed to a linkage cone, the linkage cone is slidably connected to the upper portion in a horn, a touch rod is slidably arranged in the horn, and a connecting plate is integrally arranged on the side face of the touch rod; the connecting plate is fixed to the sawtooth plate, a spring rod is fixedly arranged below the horn, and the spring rod is inserted into the touch rod in a sliding mode; through the arrangement of the anchor rod, damage to the anchor rod during hammering is avoided, the stability of the anchor rod after assembly is guaranteed, the operation steps and operation difficulty of installation and use of the anchor rod can be greatly reduced, and the installation and use time of the anchor rod is further shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rods, in particular to a post-expanding self-locking anchor rod which can be quickly installed. Background Art

[0002] During the excavation of large caverns in rock mass, hard bedrock will be encountered. When the hard bedrock is in a state of triaxial high pressure stress, it will not be damaged. Once it is exposed during excavation, it will cause rock burst due to unloading, posing a threat to construction safety. An effective measure to prevent rock burst is to install anchor rods on the excavated new bedrock surface for support. For hard rock foundations in a high pressure stress field, in order to make the support effective and resist the occurrence of rock burst, anchor rods must be installed quickly, prestressed immediately, and sufficient pressure must be provided to the rock surface.

[0003] However, when assembling and using existing post-expansion self-locking anchor rods, it is generally necessary to first use a hole-turning machine to rotate the hole, then use a hole-expanding machine to expand the hole, and then blow the hole. After the hole is blown, the anchor rod is inserted and the hole expansion at the lower end is locked by hammering, and then the grouting hole is sealed by grouting. This installation process is relatively complicated and requires professional operators to carry out the construction. The construction time is relatively long. At the same time, when hammering, the hammering end is sometimes damaged, and a perfect expansion effect cannot be achieved, thereby reducing the use effect of the anchor rod.

[0004] To this end, the utility model provides a post-expansion self-locking anchor rod that can be quickly installed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a post-expansion self-locking anchor rod that can be quickly installed, thereby solving the above-mentioned problems.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: a post-expansion self-locking anchor rod that can be quickly installed, comprising an anchor rod, the outer side of the rod body of the anchor rod is respectively threadedly connected with a connecting sleeve and a slurry stop plug, wherein the slurry stop plug is located at the input port of the anchor rod;

[0007] The anchor rod comprises a rod body, a gathering cavity is opened at the lower part of the rod body, and a screw plate is fixedly arranged at the lower part of the gathering cavity;

[0008] An impeller is provided inside the gathering chamber, and the shaft of the impeller extends downward along the grouting hole and is fixedly connected to the threaded rod, the threaded rod is threadedly connected to the screw hole in the center of the screw plate, and the lower end extends downward along the grouting hole and is fixedly connected to the linkage cone, the linkage cone is slidably connected to the top of the inside of the horn, and a trigger rod is slidably provided inside the horn, a connecting plate is integrally provided on the side of the trigger rod facing the shaft core, and the connecting plate extends out of the horn and is fixedly connected to the serrated plate, a spring rod is fixedly provided on the horn below the inside of the slide groove where the trigger rod is located, and the spring rod is slidably inserted into the inside of the trigger rod.

[0009] Preferably, a grouting hole penetrating to both ends is opened at the axial core position of the rod body, and a gathering cavity is opened on the channel path of the grouting hole and near the lower end.

[0010] Preferably, the linkage cone is conical, with a sliding-limiting convex strip on the circumferential side of the round end, and a plurality of through holes are opened inside along the axis core, and the whole is slidably connected above the inside of the horn.

[0011] Preferably, the horn is horn-shaped, consisting of a straight tube and a flared tube, and the inner walls of the straight tube and the flared tube are provided with a plurality of slide grooves along the axis, wherein a trigger rod is slidably arranged inside the slide groove of the flared tube.

[0012] Preferably, the lower end of the serrated plate is provided with saw teeth for sawing and locking.

[0013] Preferably, the spring rod is composed of a straight rod and a spring, and the straight rod extends and is inserted into the interior of the trigger rod, and is slidably restrained inside the trigger rod by the spring, and the lower ends of the rod body, the horn tube and the serrated plate are arranged flush.

[0014] The utility model provides a post-expansion self-locking anchor rod that can be quickly installed. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The post-expansion self-locking anchor rod that can be quickly installed, through the arrangement of the rod body, grouting hole, gathering chamber, screw plate, impeller, threaded rod, linkage cone, horn, trigger rod, serrated plate and spring rod, can be directly inserted into the anchor rod after drilling and blowing the hole, and combined with the blowing effect of the high-pressure air pump, the extremely fast air flow is used to simultaneously realize the expansion and downward pushing of the serrated plate and the rotation drive during the expansion process, so that the hole can be expanded, the lower end of the anchor rod can be expanded, and the anchor rod can be self-locked in the hole. Compared with the existing anchor rods, it not only avoids damage to the anchor rod caused by hammering and ensures the stability of the anchor rod after assembly, but also can greatly reduce the operation steps and operation difficulty of anchor rod installation and use, and further reduce the time of anchor rod installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a three-dimensional diagram of the external structure of the utility model;

[0017] Figure 2 It is a structural cross-sectional view of the utility model;

[0018] Figure 3 It is a schematic diagram of the impeller, horn and trigger rod and their connection structure of the utility model;

[0019] Figure 4 This is a disassembly diagram of the impeller, horn, trigger rod and their connection structure of the utility model.

[0020] In the figure: 1. anchor rod; 101. rod body; 1011. grouting hole; 1012. gathering chamber; 1013. screw plate; 102. impeller; 1021. threaded rod; 1022. linkage cone; 103. horn; 104. trigger rod; 1041. serrated plate; 1042. spring rod; 2. connecting sleeve; 3. grouting plug. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A post-expansion self-locking anchor rod that can be quickly installed includes an anchor rod 1, and the outer side of the anchor rod 1 is respectively threadedly connected with a connecting sleeve 2 and a grouting plug 3, wherein the grouting plug 3 is located at the input port of the anchor rod 1.

[0023] The anchor rod 1 comprises a rod body 101, a grouting hole 1011 penetrating to both ends is provided at the axial core position of the rod body 101, a gathering cavity 1012 is provided on the channel path of the grouting hole 1011 and near the lower end, and a screw plate 1013 is fixedly provided at intervals below the gathering cavity 1012 inside the grouting hole 1011;

[0024] The impeller 102 is arranged inside the gathering chamber 1012, and the shaft of the impeller 102 extends downward along the grouting hole 1011 and is fixedly connected to the threaded rod 1021. The threaded rod 1021 is threadedly connected to the screw hole in the center of the screw plate 1013, and the lower end extends downward along the grouting hole 1011 and is fixedly connected to the linkage cone 1022. The linkage cone 1022 is conical, and the circumferential side of the round end thereof is provided with a sliding-limited convex strip, and a plurality of through holes are opened inside along the axis core, and the whole is slidably connected to the upper part of the inside of the horn 103, and the horn 103 is rotatably connected to the lower part of the inside of the rod body 101. The horn 103 is horn-shaped, and is composed of a straight tube and a flared tube, and the straight tube and the flared tube A plurality of slide grooves are provided on the inner wall along the annular axis core, wherein a trigger rod 104 is slidably provided inside the expanded tube slide groove, a connecting plate is integrally provided on the side of the trigger rod 104 facing the axis core, and the connecting plate extends out of the slide groove and is fixedly connected to the serrated plate 1041, the lower end of the serrated plate 1041 has saw teeth for sawing and positioning, and a spring rod 1042 is fixedly provided below the horn 103 inside the slide groove where the trigger rod 104 is located, the spring rod 1042 is composed of a straight rod and a spring, and the straight rod extends and is inserted into the interior of the trigger rod 104, and is slidably limited inside the trigger rod 104 by the spring, and the lower ends of the rod body 101, the horn 103 and the serrated plate 1041 are arranged flush.

[0025] During operation, firstly, a hole is drilled at the designated assembly position, and then the anchor rod 1 is inserted into the rotating hole after the hole is blown, and then a high-pressure air pump is used to blow air into the grouting hole 1011 through the grouting port of the rod body 101. During the blowing, the extremely fast gas will drive the impeller 102 to rotate, and the rotating impeller 102 will drive the threaded rod 1021 to rotate, and then the threaded rod 1021 will move downward along the screw plate 1013, and in the process of moving downward, the linkage cone 1022 will be pushed to move downward along the horn 103. Since the linkage cone 1022 is rotating, the horn 103 will be moved by the linkage cone The body 1022 rotates, and at the same time, the downward-moving linkage cone 1022 pushes the trigger rod 104 to slide down along the slide groove of the horn 103, and the downward-moving trigger rod 104 will simultaneously drive the serrated plate 1041 to move downward and expand to the surroundings. While expanding, the surroundings will be expanded driven by the rotation of the horn 103, and the dust generated during the expansion will be blown out from the surrounding side of the anchor rod 1 driven by the airflow. After the threaded rod 1021 moves down and is locked, the blowing can be stopped, and then mortar can be injected through the grouting hole 1011 and sealed with the grouting plug 3.

[0026] To sum up, through the arrangement of the rod body 101, the grouting hole 1011, the gathering chamber 1012, the screw plate 1013, the impeller 102, the threaded rod 1021, the linkage cone 1022, the horn 103, the trigger rod 104, the serrated plate 1041 and the spring rod 1042, the anchor rod 1 can be directly inserted after drilling and blowing the hole, and combined with the blowing effect of the high-pressure air pump and the extremely fast airflow, the serrated plate 1041 can be pushed down and driven to rotate during the expansion process. In this way, the hole can be expanded, the lower end of the anchor rod 1 can be expanded, and the anchor rod 1 can be self-locked in the hole. Compared with the current anchor rod 1, it not only avoids damage to the anchor rod 1 during hammering and ensures the stability of the anchor rod 1 after assembly, but also greatly reduces the operating steps and difficulty of installing and using the anchor rod 1, and further reduces the time of installing and using the anchor rod 1.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Working principle: When working, first drill a hole at the designated assembly position, then insert the anchor rod 1 into the inside of the rotary hole after blowing the hole, and then use a high-pressure air pump to blow air into the grouting hole 1011 through the grouting port of the rod body 101. When blowing, the extremely fast gas will drive the impeller 102 to rotate, and the rotating impeller 102 will drive the threaded rod 1021 to rotate, and then the threaded rod 1021 will move downward along the screw plate 1013, and in the process of moving downward, it will push the linkage cone 1022 to move downward along the horn 103. Since the linkage cone 1022 is rotating, the horn 103 will be The linkage cone 1022 rotates, and at the same time, the downward-moving linkage cone 1022 pushes the trigger rod 104 to slide down along the slide groove of the horn 103, and the downward-moving trigger rod 104 will simultaneously drive the serrated plate 1041 to move downward and expand to the surroundings. While expanding, the surroundings will be expanded driven by the rotation of the horn 103, and the dust generated during the expansion will be blown out from the surrounding side of the anchor rod 1 driven by the airflow. After the threaded rod 1021 moves down and is locked, the blowing can be stopped, and then mortar can be injected through the grouting hole 1011 and sealed with the grouting plug 3.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A post-expansion self-locking anchor rod that can be quickly installed, comprising an anchor rod (1), wherein the outer side of the anchor rod (1) is respectively threadedly connected with a connecting sleeve (2) and a grout stopper (3), wherein: The grout stopper (3) is located at the input port of the anchor rod (1) and is characterized in that: The anchor rod (1) comprises a rod body (101), a gathering cavity (1012) is provided at the lower part of the rod body (101), and screw plates (1013) are fixedly arranged at intervals at the lower part of the gathering cavity (1012); An impeller (102) is arranged inside the gathering chamber (1012), and the shaft of the impeller (102) extends downward along the grouting hole (1011) and is fixedly connected to the threaded rod (1021), the threaded rod (1021) is threadedly connected to the screw hole at the center of the screw plate (1013), and the lower end extends downward along the grouting hole (1011) and is fixedly connected to the linkage cone (1022), and the linkage cone (1022) is slidably connected to the inside of the horn (103). A trigger rod (104) is slidably arranged inside the horn (103), a connecting plate is integrally arranged on the side of the trigger rod (104) facing the shaft core, and the connecting plate extends through the horn (103) and is fixedly connected to the serrated plate (1041), and a spring rod (1042) is fixedly arranged below the chute where the trigger rod (104) is located on the horn (103), and the spring rod (1042) is slidably inserted inside the trigger rod (104).

2. A post-expanded self-locking anchor bolt that can be quickly installed according to claim 1, characterized in that: A grouting hole (1011) penetrating to both ends is provided at the axial core position of the rod body (101), and a gathering cavity (1012) is provided on the channel path of the grouting hole (1011) and near the lower end.

3. The post-expansion self-locking anchor rod capable of rapid installation according to claim 1, characterized in that: The linkage cone (1022) is conical, with a sliding-limiting convex strip on the circumferential side of its round end, and a plurality of through holes are opened inside along the axis core, and the whole is slidably connected to the top of the inside of the horn (103).

4. The post-expanded self-locking anchor bolt that can be quickly installed according to claim 1, characterized in that: The horn tube (103) is horn-shaped and consists of a straight tube and a flared tube, and the inner walls of the straight tube and the flared tube are provided with a plurality of slide grooves along the axis, wherein a trigger rod (104) is slidably arranged inside the slide groove of the flared tube.

5. The post-expanded self-locking anchor bolt capable of rapid installation according to claim 1, characterized in that: The lower end of the sawtooth plate (1041) is provided with saw teeth for sawing and locking.

6. The post-expanded self-locking anchor bolt capable of rapid installation according to claim 1, characterized in that: The spring rod (1042) is composed of a straight rod and a spring, and the straight rod extends and is inserted into the interior of the trigger rod (104), and is slidably restrained inside the trigger rod (104) by the spring, and the lower ends of the rod body (101), the horn (103) and the sawtooth plate (1041) are arranged flush.

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