A multi-functional anchor rod with automatic dismounting of anchor rod body from drilling machine

Abstract

The application discloses a multifunctional anchor rod with the function of automatic dismounting from a drilling machine, wherein the head end of an anchor rod body is connected with an anchor head, and the bottom end is connected with a drilling machine drill chuck; a four-rib driving rod is fixedly arranged at the bottom end of the anchor rod body, and the four-rib driving rod is slidably inserted into the drilling machine drill chuck; an anchor rod base plate is slidably sleeved on the anchor rod body, and a plurality of threaded shafts are fixedly arranged on the surface of the anchor rod base plate which faces the drilling machine drill chuck; and the other end of each threaded shaft is fixedly connected with a threaded force transmission sleeve. When the anchor rod body is inserted into an anchor hole, the anchor rod base plate is in abutting contact with the soil layer on the surface of the anchor hole and is pushed back to drive the anchor rod base plate to slide towards the drilling machine drill chuck, the threaded shafts and the threaded force transmission sleeve are driven to move together and abut against the drilling machine drill chuck, and the drilling machine drill chuck is automatically dismounted under the thrusting action of the threaded force transmission sleeve, so that the anchor rod body has the function of automatic dismounting from the drilling machine, and the anchor rod is convenient to use and time and labor are saved.

Description

Technical Field

[0001] This invention relates to an anchor bolt structure, and more particularly to a multifunctional anchor bolt whose body is automatically detached from the drilling rig. Background Technology

[0002] Geotechnical engineering studies complex geological bodies that, over long geological periods, have developed numerous geological defects such as faults, bedding, joints, weak interlayers, solution channels, and solution troughs due to tectonic movements, natural weathering, and human activities. Under certain time and conditions, soil and rock masses may exist in a relatively stable equilibrium state; however, if conditions change, this equilibrium state may be disrupted. For example, during excavation and construction in geotechnical engineering, the original stress field may redistribute, leading to deformation of the soil and rock mass and subsequently causing geological hazards such as collapse, subsidence, rockfall, landslides, and ground subsidence.

[0003] To prevent and mitigate such disasters, engineering projects often embed tension members into the soil and rock mass to enhance its inherent strength and self-stabilizing capacity. These tension members are called anchors or anchor cables (hereinafter collectively referred to as anchors), and their function is anchoring. Figure 10 As shown. The techniques and processes that utilize scientific knowledge from mathematics, mechanics, and engineering materials to solve problems related to anchorage design, calculation, construction, and monitoring in geotechnical engineering are called anchorage engineering.

[0004] Anchor bolt construction typically involves driving pre-made bolts into pre-drilled holes in the surface rock mass or the rock mass surrounding the chamber. By utilizing the special structure of the head and body of the bolt and the tail support plate, or by relying on bonding, the surrounding rock is combined with the stable rock mass to produce a suspension effect, a composite beam effect, or a reinforcement effect, thereby achieving the purpose of support.

[0005] In the prior art, an invention patent (publication number CN102979541A) of Anhui Hengyuan Coal and Power Co., Ltd. discloses a new type of anchor bolt and anchor cable support method, which specifically includes specific steps such as roof anchor bolt installation, side anchor bolt installation, and anchor cable installation. It discloses that the drilling rig is connected to the anchor bolt pin (plug) nut by using a mixing joint, then the drilling rig is raised to advance the anchor bolt, and the drilling rig is started to rotate and advance at the same time. The anchor bolt nut is sheared off the positioning pin or pushed out the plug under the drive of the drilling rig, and the tray quickly presses the roof rock surface, so that the anchor bolt has a large pre-tension force.

[0006] Meanwhile, the utility model patent (publication number CN204827493U) of Huozhou Coal and Electricity Group Co., Ltd. discloses an anchor bolt and anchor cable installation booster. The main solution is to install the anchor bolt and anchor cable installer on the booster output shaft. The height of the anchor bolt and anchor cable mixing starting point is lowered through the transmission rod and gear transmission. When the mixing of the anchor bolt and anchor cable rises to the height of the anchor bolt drilling machine, the booster is removed and the anchor bolt drilling machine continues to advance. This overcomes the problems of high installation difficulty, low construction efficiency and ineffective guarantee of construction quality when anchor bolts and anchor cables are lengthened and anchored.

[0007] Technicians from Hunan University of Science and Technology have also proposed a drillable anchor bolt device and construction method for achieving cross-anchoring (publication number CN106401625A). The device includes a transmission rod, a tray, a hollow anchor bolt, a transmission gear, a fixed rod, a bearing, an anchor bolt drill bit, and a telescopic drill bit. The transmission rod is connected to the drive gear inside the hollow anchor bolt. The tray is installed at the rear end of the hollow anchor bolt, and the anchor bolt drill bit is installed at the front end of the hollow anchor bolt. Multiple telescopic drill bits are installed on the side wall of the hollow anchor bolt via bearings. The main idea is that multiple telescopic drill bits are installed on the side wall of the hollow anchor bolt, and the telescopic drill bits can drill holes in the surrounding rock to achieve cross-anchoring.

[0008] However, the existing technologies still fail to consider the following problems: When existing anchor bolts are inserted into the pre-set anchor holes by rotating the drilling rig, since the anchor bolts are fixed at the top, it is mostly necessary for personnel to climb up and manually exert force to disassemble and separate the drilling rig and the anchor bolts, which is cumbersome, laborious, and inconvenient to use. In addition, the anchor head is not well fixed at the tail end of the anchor hole and is prone to move with the drive component that applies threaded push-expansion, causing the threaded push-expansion component to fail to rotate relative to the anchor head to open the anchor head expansion, thus causing the anchor head's anchoring function to fail. Summary of the Invention

[0009] The purpose of this invention is to provide a multifunctional anchor bolt that automatically detaches from the drilling rig, thus overcoming the shortcomings of the prior art.

[0010] The technical solution of the present invention: a multifunctional anchor bolt with automatic release and detachment from the drilling rig, comprising an anchor bolt body, an anchor head connected to the head end of the anchor bolt body, and a drilling rig chuck connected to the bottom end of the anchor bolt body; a four-sided drive rod is fixedly provided at the bottom end of the anchor bolt body, the four-sided drive rod is slidably inserted into the drilling rig chuck, and an anchor bolt pad is also slidably sleeved on the anchor bolt body, and multiple threaded shafts are fixed on the surface of the anchor bolt pad facing the drilling rig chuck, and a threaded force transmission sleeve is fixedly connected to the other end of the threaded shafts; when the anchor bolt pad is pressed and moves toward the drilling rig chuck, the threaded force transmission sleeve can abut against the end face of the drilling rig chuck.

[0011] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, the bottom section of the anchor bolt body is provided with external threads, and a limit nut is threadedly sleeved on the external thread section between the anchor bolt pad and the drilling rig chuck.

[0012] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, the threaded shaft is provided with external threads, and the threaded shaft and the threaded force transmission sleeve are threadedly connected.

[0013] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, a circular baffle is provided on the end face of the limiting nut near the anchor bolt pad, and the threaded shaft passes through the baffle and connects to the threaded force transmission sleeve.

[0014] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, the top section of the anchor bolt body is provided with external threads, the main body of the anchor head has a hollow internal structure in the shape of a cylindrical shaft, and internal threads are provided in the hollow internal structure of the cylindrical shaft. The top section of the anchor bolt body is threadedly connected to the anchor head, and a positioning circular plate is fixed at the top of the anchor head. Positioning cones are evenly distributed on the top of the positioning circular plate.

[0015] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, multiple rectangular through slots are formed around the outer circumference of the lower half of the anchor head. An installation ring is fixed at the bottom of the rectangular through slot, and an expansion positioning plate is rotatably connected to the installation ring. The first end of the expansion positioning plate has a conical structure, and a force-bearing square rod is fixed on the inner wall of the bottom end of the expansion positioning plate. The force-bearing square rod extends into the hollow structure inside the anchor head, and the expansion positioning plate and the force-bearing square rod are perpendicular to each other.

[0016] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, a U-shaped mounting bracket is welded to the top of the anchor head. A positioning circular plate is slidably mounted in the middle of the U-shaped mounting bracket. A hexagonal sliding shaft is fixed at the bottom center of the positioning circular plate. A limiting disc is fixed to the bottom of the hexagonal sliding shaft. A spring is sleeved on the hexagonal sliding shaft. A protruding shaft is fixed to the bottom of the limiting disc. Two mounting collars are symmetrically fixed to the top of the anchor head. Two auxiliary limiting plates are symmetrically rotatably mounted on the two mounting collars. The bottom of the two auxiliary limiting plates has a conical tip structure, and two U-shaped swing frames are welded to their tops. Two connecting rods are symmetrically rotatably connected to the protruding shaft. The tail ends of the two connecting rods are rotatably connected to the two U-shaped swing frames.

[0017] In the aforementioned multi-functional anchor bolt that automatically releases and disconnects from the drilling rig, the U-shaped mounting bracket has a round hole in the middle, through which a hexagonal sliding shaft passes. A spring is fitted onto the hexagonal sliding shaft between the round hole and the positioning circular plate. The bottom end of the protruding shaft is a certain distance from the top end of the anchor head.

[0018] The beneficial effects of the present invention: Compared with the prior art, the present invention has the following advantages:

[0019] 1. When the anchor rod body is inserted into the anchor hole, the numerous positioning cones on the positioning plate abut against the soil at the end of the anchor hole, which can limit the torsion of the anchor head and prevent the anchor head from twisting along with the threaded section at the top of the anchor rod body. This keeps the anchor head fixed and allows it to twist relative to the threaded section at the top of the anchor rod body, ensuring the normal implementation of the anchor head's anchoring function.

[0020] 2. When the numerous positioning cones on the positioning circular plate abut against the soil at the tail end of the anchor hole, the anchor head is torsionally limited. As the anchor rod body is continuously screwed into the middle structure of the anchor head, the force-bearing square rod is squeezed by the anchor rod body, causing it to deflect. This allows the top end of the four-way expansion positioning plate to be inserted into the soil layer to anchor the anchor head. When used together with the positioning cones on the positioning circular plate, the anchor head can be doubly positioned, greatly reducing the probability of the anchor head failing due to the anchor body rotating with the anchor rod body.

[0021] 3. When the positioning circular plate is pressed against the soil at the end of the anchor hole, it can be pushed back and driven towards the anchor body. The sliding of the positioning circular plate towards the anchor body can be achieved by pulling the two auxiliary limiting plates outward and opening them through two connecting rods, so that the auxiliary limiting plates are inserted into the soil layer in the anchor hole, and the anchor head is subjected to auxiliary torsional limiting. It works together with the positioning cone on the positioning circular plate to perform double positioning of the anchor head, further reducing the probability of the anchor head failure caused by the anchor head rotating with the anchor body.

[0022] 4. When the anchor bolt body is inserted into the pre-drilled anchor hole, the anchor bolt pad is in contact with the soil layer at the beginning of the anchor hole and is pushed back to slide towards the drill chuck of the drilling rig. When the anchor bolt pad is pushed back to slide, it can drive the two threaded shafts and the two threaded force transmission sleeves to move together and come into contact with the beginning part of the outer sliding sleeve of the drill chuck of the drilling rig. Under the pushing action of the threaded force transmission sleeve, the drill chuck of the drilling rig is released, giving the anchor bolt body an additional function of automatic release and release from the drilling rig. This eliminates the trouble of operators having to climb up and manually separate and disassemble the anchor bolt body and the drilling rig anchored at the top when installing the anchor bolt body and the anchor hole. It is convenient to use and saves time and effort.

[0023] 5. The two threaded force transmission sleeves can rotate in both directions and move up and down to adjust the pushing length. This is applicable to the change in the distance between the anchor plate and the drill chuck after the anchor plate is pushed and adjusted by the limit nut, so that the drill chuck can automatically push back and loosen through the anchor plate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0027] Figure 4 This is a schematic diagram of the anchor head structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the anchor head in half section according to the present invention;

[0029] Figure 6 This is a schematic diagram of the anchor head main shaft cylinder structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the expanded positioning plate structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the positioning circular plate structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the bottom structure of the positioning circular plate of the present invention;

[0033] Figure 10 This is a schematic diagram of the basic structure of an anchor bolt in the existing technology.

[0034] Reference numerals in the attached drawings: 1-Anchor bolt body; 101-Anchor bolt pad; 102-Threaded shaft; 103-Threaded force transmission sleeve; 104-Limit nut; 2-Drill chuck; 3-Anchor head; 301-Positioning circular plate; 302-Connecting rod; 303-Auxiliary limit plate; 304-Expansion positioning plate; 305-Force-bearing square rod. Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0036] An embodiment of the present invention: a multifunctional anchor bolt with automatic detachment from the drilling rig, such as... Figure 1-9 As shown, to achieve rapid disassembly and separation of the drilling rig and the anchor bolt, this invention first considers the principle of reaction force, utilizing the resistance encountered by the anchor bolt when it is driven inward to detach the anchor bolt body 1 from the drilling rig. To achieve this design, some improvements to the anchor bolt are required. The multifunctional anchor bolt of this invention is as follows:

[0037] The device includes an anchor bolt body 1, with an anchor head 3 connected to the head end and a drill chuck 2 connected to the bottom end. A four-sided drive rod is fixedly installed at the bottom end of the anchor bolt body 1, and the four-sided drive rod is slidably inserted into the drill chuck 2. An anchor bolt pad 101 is also slidably sleeved on the anchor bolt body 1. Two threaded shafts 102 are fixed on the surface of the anchor bolt pad 101 facing the drill chuck 2. A threaded force transmission sleeve 103 is fixedly connected to the other end of the threaded shafts 102. When the anchor bolt pad 101 is pressed and moves toward the drill chuck 2, the threaded force transmission sleeve 103 can abut against the end face of the drill chuck 2.

[0038] In the structure of this invention, the four-sided drive rod is inserted and engaged with the drill chuck 2 of the drilling rig to realize the power transmission of the drilling rig. When the anchor body 1 is inserted and installed into the pre-drilled anchor hole, the anchor pad 101 is used as a force-borrowing position for the reaction force. The anchor pad 101 abuts against the soil layer at the beginning of the anchor hole and is pushed back to slide towards the drill chuck 2 of the drilling rig. When the anchor pad 101 is pushed back to slide, it can drive the two threaded shafts 102 and the two threaded force transmission sleeves 103 to move together and abut against the beginning part of the outer sliding sleeve of the drill chuck 2 of the drilling rig. The drill chuck 2 is released by pushing the threaded force transmission sleeve 103, so that the anchor body 1 additionally has the function of automatically releasing from the drilling rig.

[0039] The bottom section of the anchor bolt body 1 is provided with external threads, and a limit nut 104 is threadedly fitted onto the external thread section between the anchor bolt pad 101 and the drill chuck 2. The limit nut 104 can rotate in both directions to push the anchor bolt pad 101 up and down, thereby blocking and limiting the height of the anchor bolt pad 101 on the bottom thread section of the anchor bolt body 1 (i.e., adjusting the length of the section of the anchor bolt body 1 extending into the anchor hole). This is suitable for installation with anchor holes of different depths, ensuring that the anchor bolt pad 101 can be pushed against the soil layer on the surface of the anchor hole when the anchor bolt body 1 is inserted into the anchor hole of different depths. Moreover, the limit nut 104 can also prevent the anchor bolt pad 101 from slipping off the anchor bolt body 1 during transportation.

[0040] The threaded shaft 102 is provided with external threads, and the threaded shaft 102 and the threaded force transmission sleeve 103 are threadedly connected. The two threaded force transmission sleeves 103 can be rotated in both directions to advance and retreat, and the pushing length can be adjusted. This is suitable for the change in the distance between the anchor plate 101 and the drill chuck 2 after the anchor plate 101 is pushed and adjusted by the limiting nut 104. This allows the automatic back-pushing and unloading function implemented by the drill chuck 2 through the anchor plate 101 to be compatible with the adjustment of the insertion length of the anchor body 1 for anchor holes of different depths, making its application more extensive.

[0041] The limiting nut 104 has a circular baffle on its end face near the anchor plate 101. The threaded shaft 102 passes through the baffle and connects to the threaded force transmission sleeve 103. The baffle increases the contact area between the limiting nut 104 and the anchor plate 101, preventing the anchor plate 101 from bending due to obstruction in a small area when it contacts the limiting nut 104.

[0042] The top section of the anchor rod body 1 is provided with external threads, and the main body of the anchor head 3 is a hollow cylindrical structure with internal threads. The top section of the anchor rod body 1 is threadedly connected to the anchor head 3, and a positioning circular plate 301 is fixed to the top of the anchor head 3. The top of the positioning circular plate 301 is evenly and densely distributed with positioning cones. When the anchor rod body 1 is inserted into the anchor hole, the numerous positioning cones on the positioning circular plate 301 abut against the soil sealing at the tail end of the anchor hole, which can implement torsional limiting of the anchor head 3, preventing the anchor head 3 from twisting along with the threaded section at the top of the anchor rod body 1, so that the anchor head 3 remains fixed and can generate relative torsional movement with the threaded section at the top of the anchor rod body 1, ensuring the normal implementation of the anchoring function of the anchor head 3.

[0043] Four rectangular through slots are provided around the outer circumference of the lower half of the anchor head 3. An installation ring is welded and fixed to the bottom of the rectangular through slots. An expansion positioning plate 304 is rotatably connected to the installation ring. The first end of the expansion positioning plate 304 has a conical structure. A force-bearing square rod 305 is welded and fixed to the inner wall of the bottom end of the expansion positioning plate 304. The force-bearing square rod 305 extends into the hollow structure inside the anchor head 3, and the expansion positioning plate 304 and the force-bearing square rod 305 are perpendicular to each other. When the anchor rod body 1 is inserted into the anchor hole and the positioning plate 301 is in contact with the soil sealing at the tail end of the anchor hole, the anchor head 3 can be positioned in the tail end of the anchor hole by the positioning plate 301. The threaded section at the top of the anchor rod body 1 can rotate relative to the anchor head 3 under the rotation of the drilling rig and slide upwards with the threaded section, contacting the four force-bearing square rods 305. This pushes and swings the four expansion positioning plates 304 outwards, allowing the head of the four expansion positioning plates 304 to be inserted into the soil layer, thus anchoring the anchor head 3 and the anchor rod body 1. This prevents the anchor head 3 from failing its anchoring function due to rotation with the anchor rod body 1.

[0044] A U-shaped mounting bracket is welded to the top of the anchor head 3. A positioning circular plate 301 is slidably mounted in the middle of the U-shaped mounting bracket. A hexagonal sliding shaft is fixed at the bottom center of the positioning circular plate 301. A limiting plate is fixed at the bottom of the hexagonal sliding shaft. A spring is sleeved on the hexagonal sliding shaft. A protruding shaft is fixed at the bottom of the limiting plate. Two mounting collars are symmetrically fixed to the top of the anchor head 3. Two auxiliary limiting plates 303 are symmetrically rotatably mounted on the two mounting collars. The bottom of the two auxiliary limiting plates 303 has a conical tip structure, and two U-shaped swing frames are welded to their tops. Two connecting rods 302 are symmetrically rotatably connected to the protruding shaft. The tail ends of the two connecting rods 302 are rotatably connected to the two U-shaped swing frames.

[0045] When the positioning circular plate 301 is pressed against the end of the anchor hole, it can be pushed back and driven to slide towards the anchor body 1. The sliding of the positioning circular plate 301 towards the anchor body 1 can pull the two auxiliary limiting plates 303 outward and open them through the two connecting rods 302, and insert them into the soil layer in the anchor hole to provide auxiliary torsional limiting for the anchor head 3. It works in conjunction with the positioning cone on the positioning circular plate 301 to provide double positioning for the anchor head 3, which greatly reduces the probability of the anchor head 3 failing to anchor due to the rotation of the anchor body 1. The specific working process is as follows: the positioning circular plate 301 is squeezed, causing the hexagonal sliding shaft, the limiting plate and the protruding shaft to move towards the top of the anchor head 3. During the downward movement of the protruding shaft, it pulls the two connecting rods 302 to move together. The other end of the connecting rod 302 will drive the auxiliary limiting plate 303 to rotate around the installation collar, so that the auxiliary limiting plate 303 opens outward and inserts into the surrounding soil.

[0046] The U-shaped mounting bracket has a circular hole in the middle, through which a hexagonal sliding shaft passes. A spring is fitted onto the hexagonal sliding shaft between the circular hole and the positioning circular plate 301. The bottom end of the protruding shaft is a certain distance from the top end of the anchor head 3. This structure ensures that the positioning circular plate 301 can slide downwards when pressed.

[0047] The specific usage and function of this embodiment: In this invention, when the anchor rod body 1 is inserted into the pre-drilled anchor hole, the drilling rig inserts the anchor rod body 1 into the pre-drilled anchor hole through the drilling chuck 2. When the positioning circular plate 301 comes into contact with the soil at the end of the anchor hole, the anchor head 3 can be positioned in the end part of the anchor hole by the positioning circular plate 301. The threaded section at the top of the anchor rod body 1 can rotate relative to the anchor head 3 under the rotation drive of the drilling rig and slide upward by the thread, making contact with the four force-bearing square rods 305. This pushes and swings the four expansion positioning plates 304 outward, so that the first end of the four expansion positioning plates 304 is inserted into the soil layer to anchor the anchor head 3 and the anchor rod body 1.

[0048] The numerous positioning cones on the positioning circular plate 301 abut against and interlock with the soil sealing at the tail end of the anchor hole, which can implement torsion limit on the anchor head 3, preventing the anchor head 3 from torsion along with the threaded section at the top of the anchor rod body 1. This keeps the anchor head 3 fixed and allows it to torsion relative to the threaded section at the top of the anchor rod body 1, ensuring that the threaded section at the top of the anchor rod body 1 can move upward inside the anchor head 3 to properly push open the four expansion positioning plates 304, thus ensuring the normal implementation of the anchoring function of the anchor head 3.

[0049] When the positioning plate 301 is in contact with the soil at the end of the anchor hole, the positioning plate 301 can be pushed back and driven to slide towards the anchor body 1. The sliding of the positioning plate 301 towards the anchor body 1 can be achieved by pulling the two auxiliary limiting plates 303 outward and opening them through the two connecting rods 302, and inserting them into the soil layer in the anchor hole to perform auxiliary torsional limiting on the anchor head 3. It can be used in conjunction with the positioning cone on the positioning plate 301 to perform double positioning on the anchor head 3.

[0050] When the anchor bolt body 1 is inserted into the pre-drilled anchor hole, the anchor bolt pad 101 abuts against the soil layer on the surface of the anchor hole and is pushed back to slide towards the drill chuck 2 of the drilling rig. When the anchor bolt pad 101 is pushed back to slide, it can drive the two threaded shafts 102 and the two threaded force transmission sleeves 103 to move together and abut against the first end of the outer sliding sleeve of the drill chuck 2 of the drilling rig, pushing and controlling the release of the drill chuck 2 of the drilling rig, and automatically completing the release of the anchor bolt body 1. This eliminates the trouble of operators having to climb up to manually separate and disassemble the anchor bolt body 1 and the drilling rig when installing the anchor bolt body 1 with the anchor hole.

[0051] When the anchor body 1 is inserted into the anchor hole, the positioning circular plate 301 can only come into contact with the soil at the end of the anchor hole and the anchor pad 101 can only come into contact with the soil layer on the surface of the anchor hole to push and loosen the drill chuck 2 of the drilling rig when the rod section of the anchor body 1 above the anchor pad 101 is equal in depth to the anchor hole.

[0052] The limiting nut 104 can rotate in both directions to push the anchor plate 101 up and down, and adjust the height of the anchor plate 101 on the threaded section at the bottom of the anchor body 1 (i.e., adjust the length of the section of the anchor body 1 extending into the anchor hole). It is suitable for installation with anchor holes of different depths, ensuring that the anchor plate 101 can be pushed against the soil layer on the surface of the anchor hole when the anchor body 1 is inserted into the anchor hole of different depths. The two threaded force transmission sleeves 103 can rotate in both directions to push up and down to adjust the pushing length. It is suitable for the change in the distance between the anchor plate 101 and the drill chuck 2 of the drilling rig after the anchor plate 101 is pushed and adjusted by the limiting nut 104.

Claims

1. A multifunctional anchor bolt with automatic detachment from the drilling rig, characterized in that: The system includes an anchor body (1), with an anchor head (3) connected to the head end and a drill chuck (2) connected to the bottom end. A four-sided drive rod is fixedly installed at the bottom end of the anchor body (1), and the four-sided drive rod is slidably inserted into the drill chuck (2). An anchor pad (101) is also slidably sleeved on the anchor body (1). Multiple threaded shafts (102) are fixed on the surface of the anchor pad (101) facing the drill chuck (2). A threaded force transmission sleeve (103) is fixedly connected to the other end of the threaded shafts (102). When the anchor pad (101) is pressed and moves toward the drill chuck (2), the threaded force transmission sleeve (103) can abut against the end face of the drill chuck (2). The bottom section of the anchor body (1) is provided with external threads, and a limit nut (104) is threadedly sleeved on the external thread section between the anchor pad (101) and the drill chuck (2). The top section of the anchor body (1) is provided with external threads, and the main body of the anchor head (3) is a hollow structure in the shape of a shaft cylinder. The hollow structure in the shape of the shaft cylinder is provided with internal threads. The top section of the anchor body (1) is threadedly connected to the anchor head (3). The top of the anchor head (3) is fixed with a positioning circular plate (301). The top of the positioning circular plate (301) is evenly and densely covered with positioning cones. The lower half of the anchor head (3) has multiple rectangular through slots around its outer circumference. An installation ring is fixed at the bottom of the rectangular through slots. An expansion positioning plate (304) is rotatably connected to the installation ring. The first end of the expansion positioning plate (304) is tapered. A force-bearing square rod (305) is fixed on the inner wall of the bottom end of the expansion positioning plate (304). The force-bearing square rod (305) extends into the hollow structure inside the anchor head (3). The expansion positioning plate (304) and the force-bearing square rod (305) are perpendicular to each other. The top of the anchor head (3) is welded with a U-shaped mounting bracket. A positioning round plate (301) is slidably mounted in the middle of the U-shaped mounting bracket. A hexagonal sliding shaft is fixed at the bottom center of the positioning round plate (301). A limiting plate is fixed at the bottom of the hexagonal sliding shaft. A spring is sleeved on the hexagonal sliding shaft. A protruding shaft is fixed at the bottom of the limiting plate. Two mounting collars are symmetrically fixed at the top of the anchor head (3). Two auxiliary limiting plates (303) are symmetrically rotated on the two mounting collars. The bottom of the two auxiliary limiting plates (303) is a cone-shaped structure, and two U-shaped swing frames are welded to their tops. Two connecting rods (302) are symmetrically rotated on the protruding shaft. The tail ends of the two connecting rods (302) are rotatably connected to the two U-shaped swing frames. When the length of the anchor body (1) above the anchor pad (101) is equal to the depth of the anchor hole, the positioning round plate (301) can come into contact with the end of the anchor hole and the anchor pad (101) can come into contact with the soil layer on the surface of the anchor hole to push and loosen the drill chuck (2) of the drilling rig.

2. The multi-functional anchor bolt with automatic detachment from the drilling rig according to claim 1, characterized in that: The threaded shaft (102) is provided with external threads, and the threaded shaft (102) and the threaded force transmission sleeve (103) are threaded connection structures.

3. The multi-functional anchor bolt with automatic detachment from the drilling rig according to claim 1, characterized in that: The limiting nut (104) is provided with a circular baffle on the end face near the anchor plate (101), and the threaded shaft (102) passes through the baffle and is connected to the threaded force transmission sleeve (103).

4. The multi-functional anchor bolt with automatic detachment from the drilling rig according to claim 1, characterized in that: The U-shaped mounting bracket has a round hole in the middle, through which a hexagonal sliding shaft passes. A spring is fitted on the hexagonal sliding shaft between the round hole and the positioning round plate (301). The bottom end of the protruding shaft is a certain distance from the top end of the anchor head (3).

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