CN-116607986-B - Multifunctional anchor rod with anchor rod body automatically detached from drilling machine

Abstract

The invention discloses a multifunctional anchor rod with an anchor rod body automatically detached from a drilling machine, wherein the head end of the anchor rod body is connected with an anchor head, the bottom end of the anchor rod body is connected with a drilling machine drill chuck, a four-edge driving rod is fixedly arranged at the bottom end of the anchor rod body and is in sliding insertion fit with the drilling machine drill chuck, an anchor rod base plate is also in sliding sleeve connection with the anchor rod body, a plurality of threaded shaft rods are fixedly arranged on the surface of the anchor rod base plate facing the drilling machine drill chuck, and a threaded force transmission sleeve is fixedly connected with the other end of each threaded shaft rod. When the anchor rod body is inserted and installed with the anchor hole, the anchor rod backing plate is in abutting contact with a soil layer on the surface of the anchor hole and is reversely pushed to drive the anchor rod backing plate to slide towards the drill chuck of the drilling machine, the threaded shaft rod and the threaded force transmission sleeve are driven to move together and are in abutting contact with the drill chuck of the drilling machine, and the drill chuck of the drilling machine is automatically loosened and unloaded under the pushing action of the threaded force transmission sleeve, so that the anchor rod body additionally has the function of automatically loosening and unloading with the drilling machine, and the anchor rod is convenient to use, time-saving and labor-saving.

Inventors

• CHEN BING
• HAN XIAO
• LI PENGFEI
• ZENG RONGFU

Assignees

• 中国电建集团贵阳勘测设计研究院有限公司
• 中国水电顾问集团贵阳勘测设计研究院岩土工程有限公司

Dates

Publication Date

20260512

Application Date

20230531

Claims (4)

1. 1. The multifunctional anchor rod is characterized by comprising an anchor rod body (1), wherein the head end of the anchor rod body (1) is connected with an anchor head (3), the bottom end of the anchor rod body is connected with a drilling machine drill chuck (2), a four-edge driving rod is fixedly arranged at the bottom end of the anchor rod body (1), the four-edge driving rod is in sliding insertion fit with the drilling machine drill chuck (2), an anchor rod base plate (101) is further in sliding sleeve connection with the anchor rod body (1), a plurality of threaded shaft rods (102) are fixedly arranged on the surface of the anchor rod base plate (101) facing the drilling machine drill chuck (2), a threaded force transmission sleeve (103) is fixedly connected with the other end of the threaded shaft rods (102), and when the anchor rod base plate (101) is pressed to move towards the drilling machine drill chuck (2), the threaded force transmission sleeve (103) can prop against the end face of the drilling machine drill chuck (2); An external thread is arranged on the bottom section of the anchor rod body (1), and a limit nut (104) is sleeved on the external thread section between the anchor rod backing plate (101) and the drill chuck (2) of the drilling machine; The novel anchor comprises an anchor rod body (1), wherein the top end section of the anchor rod body (1) is provided with external threads, the main body of an anchor head (3) is of a shaft-barrel-shaped internal hollow structure, internal threads are arranged in the shaft-barrel-shaped internal hollow structure, the top end section of the anchor rod body (1) is in threaded connection with the anchor head (3), the top end of the anchor head (3) is fixedly provided with a positioning circular plate (301), and positioning cones are uniformly and densely distributed on the top end of the positioning circular plate (301); A plurality of rectangular penetrating grooves are formed in the outer circumferential wall of the lower half part of the anchor head (3) in a surrounding mode, a mounting ring is fixed at the bottom of each rectangular penetrating groove, a supporting and expanding locating plate (304) is connected to the mounting ring in a rotating mode, the head end section of the supporting and expanding locating plate (304) is of a conical structure, a stress square rod (305) is fixed on the inner bottom end wall of the supporting and expanding locating plate (304), the stress square rod (305) stretches into the inner hollow structure of the anchor head (3), and the supporting and expanding locating plate (304) and the stress square rod (305) are perpendicular to each other; the top end of the anchor head (3) is welded with a U-shaped mounting frame, the middle position of the U-shaped mounting frame is slidably provided with a positioning circular plate (301), the center of the bottom of the positioning circular plate (301) is fixedly provided with a six-edge sliding shaft, the bottom of the six-edge sliding shaft is fixedly provided with a limiting plate, the six-edge sliding shaft is sleeved with a spring, the bottom of the limiting plate is fixedly provided with a protruding shaft, the top end of the anchor head (3) is symmetrically and fixedly provided with two mounting collars, two auxiliary limiting plates (303) are symmetrically and rotatably arranged on the two mounting collars, the bottoms of the two auxiliary limiting plates (303) are in a cone-tip structure, the top ends of the two auxiliary limiting plates are welded with two U-shaped swinging frames, the protruding shafts are symmetrically and rotatably connected with two connecting rods (302), and the tail ends of the two connecting rods (302) are rotatably connected with the two U-shaped swinging frames; when the depth of the rod section of the anchor rod body (1) above the anchor rod backing plate (101) is equal to that of the anchor hole, the positioning circular plate (301) can be in abutting contact with the tail end sealing soil of the anchor hole, and the anchor rod backing plate (101) can be in abutting contact with the soil layer on the surface of the anchor hole to perform inverse pushing and loosening on the drill chuck (2) of the drilling machine.
2. 2. The multifunctional anchor rod with the anchor rod body automatically detached from the drilling machine according to claim 1, wherein the threaded shaft rod (102) is provided with external threads, and the threaded shaft rod (102) and the threaded force transmission sleeve (103) are in a threaded connection structure.
3. 3. The multifunctional anchor rod with the anchor rod body automatically detached from the drilling machine according to claim 1, wherein the limit nut (104) is provided with a baffle disc with a circular structure near the end face of the anchor rod backing plate (101), and the threaded shaft rod (102) passes through the baffle disc and is connected with the threaded force transmission sleeve (103).
4. 4. The multifunctional anchor rod with the anchor rod body automatically detached from the drilling machine according to claim 1, wherein a round hole is formed in the middle of the U-shaped mounting frame, a six-edge sliding shaft penetrates through the round hole, a spring is sleeved on the six-edge sliding shaft between the round hole and the positioning circular plate (301), and the bottom end of the protruding shaft is a certain distance away from the top end of the anchor head (3).

Description

Multifunctional anchor rod with anchor rod body automatically detached from drilling machine Technical Field The invention relates to an anchor rod structure, in particular to a multifunctional anchor rod with an anchor rod body automatically detached from a drilling machine. Background Geotechnical engineering is a complex geologic body, and in long geologic years, due to the actions of geologic structure movement, natural weathering, human activities and the like, a large number of geologic defects such as faults, layers, joints, weak interlayers, solution ditches, solution tanks and the like are formed. If the conditions are changed, the original balance state can be damaged, for example, the original stress field is redistributed in the process of geotechnical engineering excavation and construction, so that the geotechnical body is deformed, and geological disasters such as slump, collapse, rock collapse, landslide, ground subsidence and the like are generated. In order to prevent and manage such disasters, a tension member is often embedded in a rock-soil body in engineering to mobilize and improve the self-strength and self-stabilization capability of the rock-soil body, and the tension member is called an anchor rod or an anchor cable (hereinafter referred to as an anchor rod) and plays a role of anchoring, as shown in fig. 10. Technology and process for solving the problems of anchoring design, calculation, construction, monitoring and the like in geotechnical engineering by using scientific knowledge such as mathematics, mechanics, engineering materials and the like are called anchoring engineering. The anchor rod construction is usually to drive the manufactured rod column into the pre-drilled holes of the surface rock mass or the rock mass around the chamber, and the special structures of the head part and the rod body and the tail support plate are utilized, or the surrounding rock and the stable rock mass are combined together by means of the bonding effect to generate the suspension effect, the combined beam effect and the reinforcing effect so as to achieve the aim of supporting. In the prior art, an invention patent (publication number is CN 102979541A) of Anhui constant source coal electric company limited discloses a novel anchor rod and anchor cable supporting method, which specifically comprises the specific steps of roof anchor rod installation, upper anchor rod installation, anchor cable installation and the like, wherein a drilling machine is connected with an anchor rod pin (plug) nut by a stirring joint, then the drilling machine is lifted to push the anchor rod, the drilling machine is started to push the anchor rod while rotating, the anchor rod nut is driven by the drilling machine to shear a locating pin or push out a plug, and a tray rapidly compresses the roof rock surface, so that the anchor rod has larger pretension. The utility model patent of Huozhou coal electric group limited responsibility company (publication number is CN 204827493U) discloses an anchor rod and anchor cable installation booster, which is mainly characterized in that the anchor rod and anchor cable installation booster is installed on a boosting output shaft, the height of the stirring starting point of the anchor rod and anchor cable is reduced through a transmission rod and gear transmission, when the stirring of the anchor rod and anchor cable is lifted to the height of an anchor rod drilling machine, the dismounting booster is continuously pushed by the anchor rod drilling machine, and the problems that the installation difficulty is high, the construction efficiency is low and the construction quality is not effectively ensured when the anchor rod and anchor cable are lengthened and anchored are solved. The technical staff of Hunan university of science and technology also provides a drillable anchor rod device capable of realizing cross anchoring and a construction method (with the publication number of CN 106401625A), wherein the drillable anchor rod device comprises a transmission rod, a tray, a hollow anchor rod, a transmission gear, a fixed rod, a bearing, an anchor rod drill bit and a telescopic drill bit, the transmission rod is connected with a driving gear in the hollow anchor rod, the tray is arranged at the rear end of the hollow anchor rod, the anchor rod drill bit is arranged at the front end of the hollow anchor rod, a plurality of telescopic drill bits are arranged on the side wall of the hollow anchor rod through the bearing, and the telescopic drill bit can drill holes in surrounding rocks to realize cross anchoring. However, the prior art still does not consider the problems that when the existing anchor rod is inserted into the preset anchor hole through the rotary top of the drilling machine, most of the existing anchor rod needs to be lifted by a person and needs additional manual force to detach and separate the drilling machine from the anchor rod when the anchor rod is fixe