Anchor rod supporting assembly

Abstract

The utility model relates to an anchor rod supporting assembly which comprises a solid rod body. The outer end of the drill bit fixedly sleeves the inner end of the solid rod body and is provided with a flange; the hollow anchor rod body is arranged on the solid rod body in a sleeving mode and abuts against the flange, a hollow forked grouting pipe is arranged at the outer end of the hollow anchor rod body, and grouting holes are distributed in the hollow forked grouting pipe at intervals; the bottom support sleeves the hollow anchor rod body, the front section of the bottom support is a flat plate, and the rear section of the bottom support is a threaded pipe; the stop-grouting plug is connected to the threaded pipe in a threaded and sleeving mode, and the hollow anchor rod body penetrates through the stop-grouting plug; a sinking groove is formed in the back face of the anchor bearing plate, the outer end of the hollow anchor rod body extends into the sinking groove, and a through hole is formed in the sinking groove and allows the solid rod body to pass through; the inner end of the anchorage device is mounted in the through hole, and the outer end of the solid rod body passes through the anchorage device and is fastened to the outer end of the solid rod body; and the steel sheath is filled between the bottom support and the anchor backing plate, and one side of the steel sheath is provided with a notch for the hollow forked grouting pipe to pass through. The tensile strength of the solid anchor rod is fully utilized, and pre-compression is applied to the hollow anchor rod.

Description

Technical Field

[0001] The utility model relates to the field of anchor rod support, in particular to an anchor rod support component. Background Art

[0002] Anchor rods are the most basic component of tunnel support in contemporary coal mines. They reinforce the surrounding rock of the tunnels so that the surrounding rock supports itself. Anchor rods are now used not only in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, and dams. As one of the main forms of support for underground engineering and rock slopes, anchor rods are anchored in the soil or rock mass and can provide sufficient tension to prevent the collapse of the soil or rock wall. Generally speaking, hollow anchor rods and solid anchor rods are extended by sleeves, and solid anchor rods and drill bits are extended into the soil. Hollow anchor rods are convenient for grouting, but the disadvantage of hollow anchor rods is that the elongation rate is not as good as that of solid anchor rods, and the tensile performance of hollow anchor rods is weaker than that of solid anchor rods, which is not conducive to giving full play to the tensile performance of solid anchor rods. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an anchor rod support assembly, which is conducive to pre-tensioning the solid anchor rod, fully utilizing the tensile strength of the solid anchor rod, and applying pre-pressure to the hollow anchor rod to improve the tensile performance of the hollow anchor rod.

[0004] In order to solve the above problems, an anchor support assembly is adopted, which includes:

[0005] Solid rod body;

[0006] The drill bit has an outer end fixedly sleeved in the inner end of the solid rod and has a flange at the outer end;

[0007] The hollow anchor rod body is sleeved on the solid rod body and abuts against the flange, and has a hollow bifurcated grouting pipe at the outer end, on which grouting holes are distributed at intervals;

[0008] The bottom support is sleeved on the hollow anchor rod body, the front section of which is a flat plate and the rear section of which is a threaded tube;

[0009] The grout stopper is threadedly sleeved on the threaded pipe and is used for the hollow anchor rod body to pass through;

[0010] The anchor pad has a recessed groove on its back for the outer end of the hollow anchor rod to extend into, and a through hole is provided in the recessed groove for the solid rod body to pass through;

[0011] An anchor, the inner end of which is installed in the through hole, through which the outer end of the solid rod passes and fastens the outer end of the solid rod;

[0012] The steel sheath is filled between the bottom support and the anchor plate, and has a notch on one side for the hollow bifurcated grouting pipe to pass through.

[0013] With such a structure, when the outer end of the solid rod is pre-tensioned by the tensioning equipment, the inner end of the solid rod body transmits force to the flange of the drill bit, and the flange and the anchor plate pre-apply pressure to both ends of the hollow anchor rod body. After tensioning, the excess part of the solid rod body is cut off, and the outer end of the solid rod body is firmly fastened to the anchor plate by means of an anchor, so as to maintain the pre-stressed state of the anchor plate and the flange on the hollow anchor rod body, and grouting is performed through the hollow forked grouting pipe. The steel sheath ensures that the anchor plate will not bend or damage the hollow forked grouting pipe. After grouting, when the slurry solidifies, the retraction force generated by the tensioning of the solid rod body, because the drill bit has been anchored in the rock or soil through the slurry, the retraction force of the solid rod body will firmly press the anchor plate together with the bottom support and the grouting plug on the drill hole.

[0014] As a further improvement of the present invention, the solid rod body is made of threaded steel.

[0015] As a further improvement of the present invention, the solid rod body is made of steel strands.

[0016] Such a structure facilitates subsequent tensioning to form prestressed tendons, and the steel strands can be configured with multiple strands to further increase the prestress.

[0017] As a further improvement of the utility model, the drill bit is fixed to the solid rod body through a drill rod joint, a thread is arranged on the inner end of the solid rod body, the drill bit is fixedly connected to the drill rod joint, and the drill rod joint is threadedly connected to the inner end of the solid rod body.

[0018] With such a structure, the drill rod joint is easy to install and disassemble, and the drill bit and the solid rod body are installed and disassembled separately, which is convenient for transportation.

[0019] As a further improvement of the utility model, the sink groove is provided with a rubber sealing ring which abuts against the outer end of the hollow anchor rod body and allows the solid rod body to pass through.

[0020] With such a structure, the rubber sealing ring expands after being squeezed and can effectively seal the hole.

[0021] As a further improvement of the utility model, a threaded sleeve is fixedly connected to the flange, and an external thread is arranged on the inner end of the hollow anchor rod body and is threadedly connected to the threaded sleeve.

[0022] With such a structure, the threaded sleeve facilitates fastening of the flange and the hollow anchor rod body.

[0023] The utility model is conducive to pre-tensioning the solid anchor rod, fully utilizing the tensile strength of the solid anchor rod, and applying pre-pressure to the hollow anchor rod to improve the tensile performance of the hollow anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment.

[0025] Figure 2 It is a structural schematic diagram of the anchor pad.

[0026] Figure 3 This is a schematic diagram of the structure for installing a rubber sealing ring in a trough.

[0027] Figure 4 This is a schematic diagram of the cross-section structure of the installation position of the drill pipe joint.

[0028] Figure 5 It is a schematic diagram of the installation structure of the hollow anchor rod body and the threaded sleeve.

[0029] Figure numerals: 1. solid rod body; 2. drill bit; 201. flange; 3. hollow anchor rod body; 301. hollow bifurcated grouting pipe; 302. grouting hole; 4. base; 401. flat plate; 402. threaded pipe; 5. grouting plug; 6. anchor plate; 601. sinker; 602. through hole; 7. anchor; 8. steel jacket; 801. notch; 9. drill rod joint; 10. rubber sealing ring; 11. threaded sleeve. DETAILED DESCRIPTION

[0030] 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 of 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.

[0031] In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Example 1

[0033] like Figure 1-Figure 5 As shown, an anchor support assembly comprises:

[0034] Solid rod 1;

[0035] The drill bit 2 has an outer end fixedly sleeved on the inner end of the solid rod body 1 and has a flange 201 on the outer end;

[0036] The hollow anchor rod body 3 is sleeved on the solid rod body 1 and abuts against the flange 201, and has a hollow bifurcated grouting pipe 301 at its outer end, on which grouting holes 302 are spaced apart;

[0037] The bottom support 4 is sleeved on the hollow anchor rod body 3, and its front section is a flat plate 401, and its rear section is a threaded tube 402;

[0038] The grout stopper 5 is threadedly sleeved on the threaded tube 402 and allows the hollow anchor rod body 3 to pass through;

[0039] The anchor pad 6 has a recessed groove 601 on its back side, into which the outer end of the hollow anchor rod body 3 is inserted, and a through hole 602 is provided in the recessed groove 601 for the solid rod body 1 to pass through;

[0040] An anchor 7, the inner end of which is installed in the through hole 602, through which the outer end of the solid rod body 1 passes and fastens the outer end of the solid rod body 1;

[0041] The steel sheath 8 is filled between the base 4 and the anchor plate 6, and has a notch 801 on one side for the hollow bifurcated grouting pipe 301 to pass through.

[0042] With such a structure, when the outer end of the solid rod body 1 is pre-tensioned by the tensioning equipment, the inner end of the solid rod body 1 transmits force to the flange 201 of the drill bit 2, and the flange 201 and the anchor plate 6 pre-apply pressure to the two ends of the hollow anchor rod body 3. After tensioning, the excess part of the solid rod body 1 is cut off, and the outer end of the solid rod body 1 is firmly fastened to the anchor plate 6 by the anchor 7 to maintain the pre-stressed state of the anchor plate 6 and the flange 201 on the hollow anchor rod body 3. Grouting is performed through the hollow forked grouting pipe 301, and the steel sheath 8 ensures that the anchor plate 6 will not bend or damage the hollow forked grouting pipe 301. After grouting, wait for the slurry to solidify, and through the retraction force generated by the tensioning of the solid rod body 1, since the drill bit 2 has been anchored in the rock or soil through the slurry, the retraction force of the solid rod body 1 presses the anchor plate 6 together with the base 4 and the grouting plug 5 firmly on the drill hole.

[0043] In this embodiment, the solid rod body 1 is made of threaded steel.

[0044] The use of such a structure facilitates subsequent tensioning to form prestressed tendons and further increases the prestress.

[0045] In this embodiment, the drill bit 2 is fixed to the solid rod body 1 through a drill rod joint 9. The inner end of the solid rod body 1 is provided with a thread. The drill bit 2 is fixedly connected to the drill rod joint 9, and the drill rod joint 9 is further threadedly connected to the inner end of the solid rod body 1.

[0046] With such a structure, the drill rod joint 9 is easy to install and disassemble, and the drill bit 2 and the solid rod body 1 are installed and disassembled separately, which is convenient for transportation.

[0047] In this embodiment, the groove 601 is provided with a rubber sealing ring 10 to abut against the outer end of the hollow anchor rod body 3 and allow the solid rod body 1 to pass through.

[0048] With such a structure, the rubber sealing ring 10 expands after being squeezed and can effectively seal the hole.

[0049] In this embodiment, the flange 201 is fixedly connected with a threaded sleeve 11 , and the inner end of the hollow anchor rod body 3 is provided with an external thread and is threadedly connected with the threaded sleeve 11 .

[0050] With such a structure, the threaded sleeve 11 facilitates fastening of the flange 201 and the hollow anchor rod body 3 .

[0051] The utility model is conducive to pre-tensioning the solid anchor rod, fully utilizing the tensile strength of the solid anchor rod, and applying pre-pressure to the hollow anchor rod to improve the tensile performance of the hollow anchor rod.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. An anchor support assembly, characterized in that include: Solid rod (1); A drill bit (2), the outer end of which is fixedly sleeved on the inner end of the solid rod body (1), and the outer end of which has a flange (201); A hollow anchor rod body (3) is sleeved on the solid rod body (1) and abuts against the flange (201), and has a hollow bifurcated grouting pipe (301) at its outer end, on which grouting holes (302) are spaced apart; A bottom support (4) is sleeved on the hollow anchor rod body (3), wherein the front section thereof is a flat plate (401) and the rear section thereof is a threaded tube (402); A grout stopper (5) is threadedly sleeved on the threaded tube (402) and allows the hollow anchor rod body (3) to pass through; The anchor pad (6) has a recessed groove (601) on its back side, the recessed groove (601) is for the outer end of the hollow anchor rod body (3) to extend into, and a through hole (602) is provided in the recessed groove (601) for the solid rod body (1) to pass through; An anchor (7), the inner end of which is mounted in the through hole (602) and allows the outer end of the solid rod body (1) to pass through and fasten the outer end of the solid rod body (1); The steel sheath (8) is filled between the base (4) and the anchor plate (6), and has a notch (801) on one side for the hollow bifurcated grouting pipe (301) to pass through.

2. The anchor support assembly according to claim 1, characterized in that The solid rod body (1) is made of threaded steel.

3. The anchor support assembly according to claim 1, characterized in that The solid rod body (1) is made of steel strands.

4. The anchor support assembly according to claim 1, characterized in that The drill bit (2) is fixed to the solid rod body (1) via a drill rod joint (9); a thread is provided at the inner end of the solid rod body (1); the drill bit (2) is fixedly connected to the drill rod joint (9); and the drill rod joint (9) is further threadedly connected to the inner end of the solid rod body (1).

5. The anchor support assembly according to claim 1, characterized in that The sink groove (601) is provided with a rubber sealing ring (10) which abuts against the outer end of the hollow anchor rod body (3) and allows the solid rod body (1) to pass through.

6. The anchor support assembly according to claim 1, characterized in that A threaded sleeve (11) is fixedly connected to the flange (201), and an external thread is provided on the inner end of the hollow anchor rod body (3) and is threadedly connected to the threaded sleeve (11).

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