A construction method of mechanical resin anchor

Abstract

The present application relates to the technical field of rock and soil support devices, specifically to a construction method of a mechanical resin anchor rod, wherein the mechanical resin anchor rod comprises a mechanical expansion anchor head; the end of the mechanical expansion anchor head is sleeved with a flexible sleeve, a medicine bag is provided inside the flexible sleeve, the flexible sleeve is connected to the mechanical expansion anchor head through a connecting sleeve, and a stirring knife is provided at the end of the mechanical expansion anchor head near the medicine bag; in this mechanical resin anchor rod, the flexible sleeve can effectively protect the resin glue roll in the medicine bag, avoiding the resin glue roll from being scratched in advance during the feeding process, and at the same time, the resin glue in the resin glue roll can be stirred by the stirring knife so that it can be fully mixed, and the mixed resin glue is filled around the mechanical anchor rod; the construction method of the mechanical resin anchor rod is simple and efficient, with a high degree of mechanization, and the mechanical expansion anchor head can perform secondary grouting operation through the anchor rod after physical expansion, thereby further improving the anchoring effect.

Description

Technical Field

[0001] The present application relates to the technical field of rock and soil support devices, and specifically to a construction method of a mechanical resin anchor rod. Background Art

[0002] Expansion anchoring is a part of the expansion shell anchor. Its working principle is to expand the built-in expansion shell to make the anchor rod tightly combined with the surrounding strata, thereby providing support and stability. It is widely used in the field of geotechnical support. In the prior art, utility model patent CN217783549U discloses an expansion anchor head, comprising an expansion shell inner wedge and expansion shell plates symmetrically arranged on both sides of the expansion shell inner wedge, the outer side surface of the expansion shell inner wedge has a sliding surface that slides with the inner wall of the expansion shell plate, and the inner hole of the expansion shell inner wedge is provided with an internal thread that cooperates with the external thread of the anchor rod body; it also includes a clamping strip, the two opposite side arms on the clamping strip are respectively fixed in the mounting grooves provided on the outer wall of the corresponding expansion shell plate, and the horizontal end of the clamping strip connecting the two side walls is embedded in the limiting groove opened on the front end surface of the expansion shell inner wedge; one side of the rear end of each of the expansion shell plates is provided with a card slot and the other side is provided with a locking protrusion, and the card slot of each expansion shell plate is locked with the locking protrusion of another expansion shell plate; the outer wall of the expansion shell inner wedge is symmetrically provided with overflow exhaust grooves; because this scheme grasps the inner wall of the anchor hole by the expansion of the expansion shell plate. Another anchoring method is to replace the expansion shell anchor rod with a built-in resin glue roll, and the resin glue in the resin glue roll is used to bond the anchor rod and the surrounding rock to provide anchoring force.

[0003] However, during the actual construction process, in order to improve the connection strength between the expandable anchor head and the inner wall of the anchor hole, a resin adhesive roll is usually inserted into the anchor hole before the expandable anchor head is sent into the anchor hole. The expandable anchor head is then used to push the resin adhesive roll into the anchor hole. Since there are more gravels inside the anchor hole, the protective film of the resin adhesive roll is easily scratched by the gravel when the resin adhesive roll goes deep into the anchor hole. At this time, the adhesive in the resin adhesive roll will flow out prematurely, thereby affecting the entire anchoring effect. Summary of the Invention

[0004] The present application provides a construction method for a mechanical resin anchor rod, in which a flexible sleeve can effectively protect the resin glue roll in the drug package, preventing the resin glue roll from being cut prematurely during the feeding process. At the same time, the resin glue in the resin glue roll can be stirred by a stirring blade so that it can be fully mixed. The mixed resin glue is filled around the mechanical anchor rod, which can effectively improve the connection strength between the mechanical anchor rod and the anchor hole, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a mechanical resin anchor rod, comprising a mechanical expansion anchor head; the end of the mechanical expansion anchor head is sleeved with a flexible sleeve, a medicine bag is provided inside the flexible sleeve, the flexible sleeve is connected to the mechanical expansion anchor head, and a stirring knife is provided at the end of the mechanical expansion anchor head near the medicine bag.

[0006] The mechanical expansion anchor head includes two arc expansion plates and a conical head symmetrically arranged up and down. The two arc expansion plates are flexibly connected together. The conical head is arranged between the two arc expansion plates and is slidably connected to the arc expansion plates.

[0007] Preferably, the flexible sleeve is connected to the mechanical expansion anchor head through a connecting sleeve, the connecting sleeve is a heat shrink tube, and the flexible sleeve is a metal mesh.

[0008] Preferably, the flexible sleeve is a plastic tube, and a slot is provided on the outer side surface of the mechanical expansion anchor head, and the end of the plastic tube is clamped in the slot.

[0009] Preferably, the drug package is a resin anchoring agent.

[0010] Preferably, a V-shaped notch is provided between the two arc-shaped expansion plates, and the two arc-shaped expansion plates are tied together by a cable tie.

[0011] Preferably, the ends of the two arc-shaped expansion plates are connected together by a U-shaped thin steel plate, and the stirring blade is arranged on the U-shaped thin steel plate.

[0012] Preferably, a slide groove is provided on the inner side of the arc-shaped expansion plate, the conical head is arranged in the slide groove, and a symmetrical V-shaped slider is provided on the outer side of the conical head, and the V-shaped slider is slidably connected to the V-shaped notch.

[0013] Preferably, a threaded through hole is provided at the center axis of the conical head, and an anchor rod is connected to the internal thread of the threaded through hole.

[0014] Preferably, the outer side surface of the anchor rod is provided with a threaded section, the anchor rod is located between two arc-shaped expansion plates, the anchor rod is a hollow grouting anchor rod, and a grouting hole is provided at the end of the outer side surface of the anchor rod.

[0015] A construction method for a mechanical resin anchor rod includes the above-mentioned mechanical resin anchor rod, step one, first drilling an anchor hole on the rock wall, then inserting a drug bag into the interior of a flexible sleeve, then sleeve the flexible sleeve onto the end of the mechanical expansion anchor head, screwing one end of the anchor rod with the grouting hole into the interior of the conical head, so that the end of the anchor rod contacts the U-shaped thin steel plate.

[0016] The second step is to connect the other end of the anchor rod to the external anchor injection machine. The anchor injection machine inserts the mechanical expansion anchor head together with the flexible sleeve into the interior of the anchor hole. After the flexible sleeve is inserted to the bottom, continue to apply pressure to the anchor rod. The anchor rod is rotated while continuing to apply pressure to the anchor rod through the anchor injection machine. The anchor rod pushes the mechanical expansion anchor head to squeeze the flexible sleeve and the medicine bag set inside the flexible sleeve. The stirring knife at the end of the mechanical expansion anchor head first pierces the protective film of the medicine bag, and the mechanical expansion anchor head rotates with the anchor rod as a whole. The rotating stirring knife stirs the resin glue. When the mechanical expansion anchor head is inserted to the bottom of the anchor hole, continue to rotate the anchor rod. Since the arc expansion plate is solidified in the anchor hole at this time, the conical head moves outward along the V-shaped notch. The cable ties tied to the outer surfaces of the two arc expansion plates will be broken first, and then the two arc expansion plates are simultaneously stretched open by the conical head until the arc expansion plate is pressed tightly against the inner wall of the anchor hole and cannot continue to expand.

[0017] Step three: perform secondary grouting operation through anchor rods.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The flexible sleeve of the present application can effectively protect the resin glue roll in the medicine package, preventing the resin glue roll from being cut prematurely during the feeding process. At the same time, the stirring blade can stir the resin glue in the resin glue roll so that it can be fully mixed. The mixed resin glue is filled around the mechanical anchor rod, which can effectively improve the connection strength between the mechanical anchor rod and the anchor hole;

[0020] 2. The flexible sleeve can be made of wire mesh or thin plastic tube. After the reagent bag is pushed into place, the anchor rod can easily crush the flexible sleeve. The conical head can open the arc-shaped expansion plate so that it can be pressed tightly against the inner wall of the anchor hole. The physical expansion of the mechanical expansion anchor head effectively improves the anchoring effect.

[0021] 3. The construction method of this application is simple and efficient, with a high degree of mechanization. When used in conjunction with an integrated anchoring machine, it can effectively save manpower. The mechanical expansion anchor head can perform secondary grouting operations through the anchor rod after physical expansion, further improving the anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0023] Figure 2 This is a schematic diagram of the structure of Example 2 of the present application;

[0024] Figure 3 Schematic diagram of the structure of the flexible sleeve in Example 1;

[0025] Figure 4 Schematic diagram of the connection structure between the conical head and the arc-shaped expansion plate;

[0026] Figure 5 It is the main view of the curved expansion plate;

[0027] Figure 6 Schematic diagram of the connection structure between the anchor rod and the conical head;

[0028] Figure 7 It is the right side view of the curved expansion plate;

[0029] Figure 8 Schematic diagram of the structure of the conical head.

[0030] In the figure: 1 reagent bag, 2 flexible sleeve, 3 connecting sleeve, 4 stirring blade, 5 mechanical expansion anchor head, 51 arc expansion plate, 511 V-shaped notch, 52 conical head, 521 V-shaped slider, 53 U-shaped thin steel plate, 54 slide groove, 6 anchor rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] In the description of this application, if the direction description is involved, for example, the direction or position relationship indicated by "up", "down", "front", "back", "left", "right", etc. is based on the attached Figure 1 The orientations or positional relationships shown are for the purpose of facilitating the description of this application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. When a feature is referred to as being "disposed," "fixed," or "connected" to another feature, it may be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, or connected to the other feature. Example

[0033] See also Figure 1 、 3 , 4, 5, 6, 7 and 8, this embodiment provides the following technical solutions:

[0034] A mechanical resin anchor rod includes a mechanical expansion anchor head 5; the end of the mechanical expansion anchor head 5 is sleeved with a flexible sleeve 2, a medicine bag 1 is provided inside the flexible sleeve 2, the flexible sleeve 2 is connected to the mechanical expansion anchor head 5, and a stirring blade 4 is provided at the end of the mechanical expansion anchor head 5 near the medicine bag 1.

[0035] Specifically, the flexible sleeve 2 is used to protect the medicine package 1 to prevent the medicine package 1 from being scratched prematurely by the gravel in the anchor hole during the insertion process. The flexible sleeve 2 can be made of wire mesh. After the medicine package 1 is pushed into place, the stirring blade 4 can scratch the outer packaging of the medicine package 1, and then the stirring blade 4 is rotated to mix and stir the resin glue in the medicine package 1 so that the resin glue can be fully contacted.

[0036] The mechanical expansion anchor head 5 includes two symmetrically arranged arc expansion plates 51 and a conical head 52. The two arc expansion plates 51 are flexibly connected together. The conical head 52 is arranged between the two arc expansion plates 51 and is slidably connected to the arc expansion plates 51.

[0037] Specifically, the conical head 52 can expand the arc-shaped expansion plate 51 so that it can be tightly pressed against the inner wall of the anchor hole.

[0038] Furthermore, the drug package 1 is a resin anchoring agent.

[0039] Specifically, the resin anchor solidifies quickly, taking about 20 seconds to solidify, which can improve the anchoring efficiency.

[0040] More specifically, the resin anchoring agent uses a resin glue, and the two components of the resin glue can only be quickly solidified after being mixed together and stirred.

[0041] Furthermore, a V-shaped notch 511 is provided between the two arc-shaped expansion plates 51 , and the two arc-shaped expansion plates 51 are tied together by a cable tie.

[0042] Specifically, the number of the cable ties is not less than one, and when the arc-shaped expansion plate 51 is expanded by the conical head 52 , the cable ties are easily broken.

[0043] More specifically, the outer side surface of the arc-shaped expansion plate 51 is provided with wave-shaped positioning teeth for gripping the rock wall.

[0044] Furthermore, the ends of the two arc-shaped expansion plates 51 are connected together by a U-shaped thin steel plate 53 , and the stirring blade 4 is arranged on the U-shaped thin steel plate 53 .

[0045] Specifically, the U-shaped thin steel plate 53 is used to fix the two arc-shaped expansion plates 51 together. The U-shaped thin steel plate 53 is elastic and can be easily expanded.

[0046] Furthermore, a slide groove 54 is provided on the inner side of the arc expansion plate 51 , the conical head 52 is disposed in the slide groove 54 , and a symmetrical V-shaped slider 521 is provided on the outer side of the conical head 52 , which is slidably connected to the V-shaped notch 511 .

[0047] Specifically, the V-shaped slider 521 can slide along the V-shaped notch 511 to open the two arc-shaped expansion plates 51 while ensuring that the conical head 52 and the arc-shaped expansion plate 51 do not rotate relative to each other.

[0048] Furthermore, a threaded through hole is provided at the center axis of the conical head 52 , and the internal thread of the threaded through hole is connected to the anchor rod 6 .

[0049] Specifically, after the arc-shaped expansion plate 51 is fixed, the conical head 52 will expand the arc-shaped expansion plate 51 when the anchor rod 6 is rotated.

[0050] Furthermore, a threaded section is provided on the outer side of the anchor rod 6 . The anchor rod 6 is located between the two arc-shaped expansion plates 51 . The anchor rod 6 is a hollow grouting anchor rod, and a grouting hole is provided on the end of the outer side of the anchor rod 6 .

[0051] Specifically, a secondary grouting operation can be performed through the anchor rod 6 .

[0052] More specifically, the secondary grouting hole of the anchor rod is initially located inside the conical head 52, which can effectively prevent the resin glue from entering the interior of the grouting hole.

[0053] Furthermore, the flexible sleeve 2 is connected to the mechanical expansion anchor head 5 through a connecting sleeve 3. The connecting sleeve 3 is a heat shrink tube, and the flexible sleeve 2 is a metal mesh.

[0054] Specifically, the flexible sleeve 2 can be fixed on the mechanical expansion anchor head 5 through a heat shrink tube. Example

[0055] See also Figure 2 、 4 , 5, 6, 7 and 8. The main difference between this embodiment and embodiment 1 is that the flexible sleeve 2 is a plastic cylinder, which is directly clamped on the outer side of the mechanical expansion anchor head 5, effectively increasing the convenience of connection.

[0056] Specifically, it is a mechanical resin anchor rod, including a mechanical expansion anchor head 5; the end of the mechanical expansion anchor head 5 is sleeved with a flexible sleeve 2, and a medicine bag 1 is provided inside the flexible sleeve 2. The flexible sleeve 2 is connected to the mechanical expansion anchor head 5, and a stirring knife 4 is provided at the end of the mechanical expansion anchor head 5 near the medicine bag 1.

[0057] The mechanical expansion anchor head 5 includes two symmetrically arranged arc expansion plates 51 and a conical head 52. The two arc expansion plates 51 are flexibly connected together. The conical head 52 is arranged between the two arc expansion plates 51 and is slidably connected to the arc expansion plates 51.

[0058] Furthermore, the drug package 1 is a resin anchoring agent.

[0059] Furthermore, a V-shaped notch 511 is provided between the two arc-shaped expansion plates 51 , and the two arc-shaped expansion plates 51 are tied together by a cable tie.

[0060] Furthermore, the ends of the two arc-shaped expansion plates 51 are connected together by a U-shaped thin steel plate 53 , and the stirring blade 4 is arranged on the U-shaped thin steel plate 53 .

[0061] Furthermore, a slide groove 54 is provided on the inner side of the arc expansion plate 51 , the conical head 52 is disposed in the slide groove 54 , and a symmetrical V-shaped slider 521 is provided on the outer side of the conical head 52 , which is slidably connected to the V-shaped notch 511 .

[0062] Furthermore, a threaded through hole is provided at the center axis of the conical head 52 , and the internal thread of the threaded through hole is connected to the anchor rod 6 .

[0063] Furthermore, a threaded section is provided on the outer side of the anchor rod 6 . The anchor rod 6 is located between the two arc-shaped expansion plates 51 . The anchor rod 6 is a hollow grouting anchor rod, and a grouting hole is provided on the end of the outer side of the anchor rod 6 .

[0064] Furthermore, the flexible sleeve 2 is a plastic tube, and a slot is provided on the outer side surface of the mechanical expansion anchor head 5, and the end of the plastic tube is clamped in the slot.

[0065] Specifically, the plastic pipe is snap-connected to the mechanical expansion anchor head 5 by means of a snap buckle, which can increase the convenience of connection.

[0066] A construction method for a mechanical resin anchor rod, step 1, first drill an anchor hole on the rock wall, then insert the agent bag 1 into the interior of the flexible sleeve 2, then put the flexible sleeve 2 on the end of the mechanical expansion anchor head 5, and screw the end of the anchor rod 6 with the grouting hole into the interior of the conical head 52, so that the end of the anchor rod 6 contacts the U-shaped thin steel plate 53.

[0067] The second step is to connect the other end of the anchor rod 6 to the external anchor injection machine, and the anchor injection machine inserts the mechanical expansion anchor head 5 together with the flexible sleeve 2 into the interior of the anchor hole. After the flexible sleeve 2 is inserted to the bottom, continue to apply pressure to the anchor rod 6, and rotate the anchor rod 6 while continuing to apply pressure to the anchor rod 6 through the anchor injection machine. The anchor rod 6 pushes the mechanical expansion anchor head 5 to squeeze the flexible sleeve 2 and the medicine bag 1 set inside the flexible sleeve 2. The stirring blade 4 at the end of the mechanical expansion anchor head 5 first pierces the protective film of the medicine bag 1. At this time, the resin glue of the two components independently packaged in the medicine bag 1 is in contact. Since the thrust applied by the anchor rod 6 to the conical head 52 is not enough to break the cable tie tied to the arc expansion plate 51, the anchor rod 6 and the conical head 52 are in a locked state, and the mechanical expansion anchor head 5 rotates together with the anchor rod 6 as a whole. The rotating stirring blade 4 stirs the resin glue. When the mechanical expansion anchor head 5 is inserted into the bottom of the anchor hole, the stirring blade 4 is first stuck on the stone at the bottom of the anchor hole. At the same time, the resin glue is filled around the mechanical expansion anchor head 5. The resin glue quickly fixes the arc expansion plate 51 to the anchor hole wall. The anchor rod 6 continues to be rotated. At this time, since the anchor rod 6 is threadedly connected to the conical head 52 of the mechanical expansion anchor head 5, and the arc expansion plate 51 is solidified in the anchor hole, the conical head 52 is slidingly connected to the arc expansion plate 51. When the anchor rod 6 continues to be rotated, the conical head 52 will move outward along the inner side of the arc expansion plate 51, and the cable tie tied to the outer surface of the two arc expansion plates 51 will be broken first. Then the two arc expansion plates 51 are simultaneously stretched open by the conical head 52 until the arc expansion plate 51 is pressed against the inner wall of the anchor hole and can no longer expand.

[0068] Step three: perform secondary grouting operation through the anchor rod 6.

[0069] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A construction method for a mechanical resin anchor, comprising a mechanical expansion anchor head (5); the end of the mechanical expansion anchor head (5) is sleeved with a flexible sleeve (2), the interior of the flexible sleeve (2) is provided with a medicine bag (1), the flexible sleeve (2) is connected to the mechanical expansion anchor head (5), and the end of the mechanical expansion anchor head (5) is provided with a stirring blade (4) near the medicine bag (1); the mechanical expansion anchor head (5) comprises a conical head (52) and two arc expansion plates (51) buckled together and symmetrically arranged, the two arc expansion plates The expansion plates (51) are flexibly connected together, the conical head (52) is arranged between the two arc-shaped expansion plates (51), the conical head (52) is slidably connected to the arc-shaped expansion plates (51), the flexible sleeve (2) is connected to the mechanical expansion anchor head (5) through the connecting sleeve (3), the connecting sleeve (3) is a heat shrink tube, the flexible sleeve (2) is a metal mesh, or the flexible sleeve (2) is a plastic tube, the outer side of the mechanical expansion anchor head (5) is provided with a card slot, the end of the plastic tube is carded in the card slot, the medicine bag ( 1) is a resin anchoring agent, a V-shaped notch (511) is provided between the two arc-shaped expansion plates (51), the two arc-shaped expansion plates (51) are tied together by a tie, the ends of the two arc-shaped expansion plates (51) are connected together by a U-shaped thin steel plate (53), the stirring blade (4) is set on the U-shaped thin steel plate (53), the inner side surface of the arc-shaped expansion plate (51) is provided with a slide groove (54), the conical head (52) is set in the slide groove (54), and the outer side surface of the conical head (52) is provided with a symmetrical V The V-shaped slider (521) is slidably connected to the V-shaped notch (511), a threaded through hole is provided at the center axis of the conical head (52), and an anchor rod (6) is connected to the inner thread of the threaded through hole. The outer side surface of the anchor rod (6) is provided with a threaded section. The anchor rod (6) is located between the two arc-shaped expansion plates (51). The anchor rod (6) is a hollow grouting anchor rod. A grouting hole is provided at the end of the outer side surface of the anchor rod (6). After the agent bag (1) is pushed into place, the anchor rod (6) crushes the flexible sleeve (2). Its characteristics are: Step 1: First, an anchor hole is drilled on the rock wall, and then the agent bag (1) is inserted into the interior of the flexible sleeve (2). Then, the flexible sleeve (2) is sleeved on the end of the mechanical expansion anchor head (5), and the end of the anchor rod (6) with the grouting hole is screwed into the interior of the conical head (52), so that the end of the anchor rod (6) contacts the U-shaped thin steel plate (53); Step 2: Connect the other end of the anchor rod (6) to the external anchor injection machine. The anchor injection machine inserts the mechanical expansion anchor head (5) together with the flexible sleeve (2) into the interior of the anchor hole. After the flexible sleeve (2) is inserted to the bottom, continue to apply pressure to the anchor rod (6). While continuing to apply pressure to the anchor rod (6) through the anchor injection machine, the anchor rod (6) is rotated. The anchor rod (6) pushes the mechanical expansion anchor head (5) to squeeze the flexible sleeve (2) and the medicine bag (1) set inside the flexible sleeve (2). The stirring blade (4) at the end of the mechanical expansion anchor head (5) first pushes the protective film of the medicine bag (1) Puncture, the mechanical expansion anchor head (5) rotates as a whole along with the anchor rod (6), and the rotating stirring blade (4) stirs the resin glue. When the mechanical expansion anchor head (5) is inserted into the bottom of the anchor hole, the anchor rod (6) continues to rotate. Since the arc expansion plate (51) is solidified in the anchor hole at this time, the conical head (52) moves outward along the V-shaped notch (511), and the tie tied to the outer surface of the two arc expansion plates (51) will be broken first, and then the two arc expansion plates (51) are simultaneously stretched open by the conical head (52) until the arc expansion plate (51) is pressed against the inner wall of the anchor hole and cannot continue to expand; Step three, performing secondary grouting operation through the anchor rod (6).

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