Grouting anchor rod

Abstract

The utility model discloses a grouting anchor rod which comprises an anchor rod body, a stop-grouting plug mechanism is installed at the outer end of the anchor rod body, and a drill bit mechanism is installed at the inner end of the anchor rod body. The drill bit mechanism comprises a drill bit body, a plurality of flaring grooves are formed in the drill bit body, and a plurality of flaring cutter structures are installed in the flaring grooves. The expanding cutter structure comprises a triangular cutter body, and a plurality of cutter tooth structures are integrally formed on the outer end face of the triangular cutter body. The outer end face of the triangular cutter body inclines towards the inner side, and the inner face of the triangular cutter body is fixedly connected with a cutter drawing structure of an arc-shaped structure. The drill bit body is further provided with a fluid channel structure, and the drill bit body is lubricated through the fluid channel structure. By means of the structure, the technical defect that in the rock layer trepanning process in the anchor rod construction process, concrete cannot be grouted and filled due to the fact that concrete is clamped and blocked in a hole with a small caliber is effectively overcome.

Description

Technical Field

[0001] This utility model belongs to the field of grouting anchor technology, and in particular relates to a grouting anchor. Background Technology

[0002] An anchor bolt is an anchoring device of a certain length. In engineering, anchor bolts are used for reinforcement, such as anchoring them to soft soil slope structures to stabilize the slope. During the anchor bolt installation process, construction workers first create anchor bolt tunnels in the geological structure, then drive the anchor bolts in and inject concrete grout into the anchor bolt tunnels. After the concrete grout solidifies, the anchor bolts are firmly anchored within the slope structure.

[0003] The aforementioned construction process is not only cumbersome but also involves a large amount of work. Therefore, the existing technology involves installing a disposable drill bit on the anchor bolt, directly creating an anchor bolt tunnel groove in the slope structure through the anchor bolt, and then injecting concrete grout from the anchor bolt until the anchor bolt tunnel groove is completely filled with concrete. This construction method is not only highly efficient but also requires less work.

[0004] However, in actual work, the slope soil structure often contains hard rock layers. Traditional drill bits not only struggle to break up these rock layers, but also produce relatively small boreholes during construction. When concrete grout encounters these hard, small-diameter rock layers, it cannot pass through the small-diameter boreholes if there is debris or blockage within the hole, leading to blockage. Conversely, the soft soil structure allows the pressure of concrete grout to loosen the soil layer, pushing away obstructions such as rocks and maintaining a clear grouting path.

[0005] Therefore, during construction, it is necessary to solve the technical problem of the small hole diameter in rock layers with high hardness. Currently, the drill bit installed on the anchor bolt itself has great difficulty in drilling when it encounters rock layer structures, and hole enlargement is simply impossible. Utility Model Content

[0006] Based on the above background, the purpose of this utility model is to provide a grouting anchor.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A grouting anchor bolt includes an anchor bolt body, an anchor bolt body with a grout stop plug mechanism installed at its outer end, and an anchor bolt body with a drill bit mechanism installed at its inner end.

[0009] The drill bit mechanism includes a drill bit body, on which a plurality of flaring grooves are provided, and a plurality of flaring cutter structures are installed in the flaring grooves.

[0010] The expanding structure includes a triangular blade body, and a plurality of cutting teeth are integrally formed on the outer end face of the triangular blade body;

[0011] The outer end face of the triangular blade is inclined inward, and an arc-shaped scooping structure is fixedly connected to the inner surface of the triangular blade.

[0012] The drill bit body is also provided with a fluid channel structure, which is used to lubricate the drill bit body.

[0013] Preferably, the grout stop mechanism includes a grout stop plug threaded onto the anchor bolt body, and the grout stop mechanism further includes a protective plate slidably mounted on the anchor bolt body;

[0014] The protective plate is supported on the outside of the grout stop plug, and the outer end of the anchor bolt body is threaded with a locking nut to lock the protective plate.

[0015] Preferably, the grouting anchor has a long channel structure inside, and the long channel structure is connected to the fluid channel structure.

[0016] Preferably, the fluid channel structure includes a main channel formed on the drill bit body, and a plurality of vertically arranged branch channels are connected to the main channel, with the outlet port of the branch channels located in the flared groove.

[0017] Preferably, two rows of diversion channels are distributed along the length of the groove within the flared groove; the two rows of diversion channels are located on both sides of the triangular blade body.

[0018] Preferably, the cutting tooth structure includes triangular cutting teeth, and the thickness of the cutting teeth is the same as the thickness of the triangular cutting body;

[0019] The triangular blade body has a weight-reducing hole structure.

[0020] Preferably, the weight-reducing hole structure includes a circular through hole formed on the triangular cutter body and an arc-shaped hole formed on the side wall of the triangular cutter body;

[0021] The cutting tool structure is located above the arc-shaped hole.

[0022] Preferably, the scooping knife structure includes an arc-shaped scooping knife, which is welded to the side wall of the triangular scooping knife body.

[0023] Preferably, the anchor bolt body has several grout discharge holes with interconnected long channel structures.

[0024] Preferably, a spiral slag discharge plate is welded onto the anchor bolt body.

[0025] This utility model has the following beneficial effects:

[0026] 1. During the working process, the drill bit first continuously breaks up the rock layer. Through the triangular cutting edge, it enlarges the hole in the rock layer. During this enlargement process, the sharpness of the cutting edge breaks up the rock layer and forms an enlarged hole. Simultaneously, the rotating cutting edge loosens and disperses the falling debris, minimizing the resistance of the broken rock as the drill bit moves forward and rotates. This reduces the resistance of the drill bit in drilling.

[0027] 2. During the operation, the construction personnel pump water under a certain pressure from the anchor bolt body, and after entering through the main channel, it is discharged through the diversion channel. This serves two purposes: firstly, to lubricate and cool the triangular cutter body, and secondly, to lubricate the rock strata, thereby reducing the difficulty of excavation and the load on the drill bit body.

[0028] 3. By tilting the outer end face of the triangular cutter body backward, the outer end face of the triangular cutter body (because it is tilted backward into a backward tilted posture) can effectively protect the triangular cutter body during the chiseling process and effectively avoid the risk of the triangular cutter body breaking during the chiseling process. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the dispersed structure in an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of the slurry stop plug mechanism in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the drill bit mechanism in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the triangular blade body in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure in an embodiment of the present utility model.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0039] Example 1

[0040] like Figure 1-5 As shown, a grouting anchor bolt includes an anchor bolt body 1, which is a conventional grouting anchor bolt disclosed in the prior art. Its interior is hollow and has a long channel structure of a certain length for subsequent grouting concrete.

[0041] To prevent concrete slurry from gushing out during grouting, a grout-stopping plug mechanism 2 is installed at the outer end of the anchor bolt body 1 (the grout-stopping plug mechanism 2 is close to the slope after the anchor bolt body 1 is fully driven in). Specifically, the grout-stopping plug mechanism 2 includes a grout-stopping plug 23 threaded onto the anchor bolt body 1 (the anchor bolt body 1 is made of threaded steel, and the grout-stopping plug 23 is conical in shape, with the large end face of the cone facing outwards as the grout-stopping surface). The grout-stopping plug mechanism 2 also includes a protective plate 22 slidably installed on the anchor bolt body 1; the protective plate 22 supports the slope and the outer side of the grout-stopping plug 23, and a locking nut 21 is threadedly connected to the outer end of the anchor bolt body 1 to lock the protective plate 22.

[0042] After the anchor rod is driven in, the locking nut 21 is turned inward until it is pressed against the guard plate 22 and the guard plate 22 is pressed against the slope. Meanwhile, the anchor rod body 1 is fixed inside the slope. Thus, the locking nut 21 and the guard plate 22 are locked and the entire device is tightened.

[0043] Example 2

[0044] like Figure 1-5 As shown, in this embodiment, based on the structure of implementation 1, in order to realize the hole enlargement operation during the opening of the anchor bolt tunnel groove, especially the hole enlargement in the rock layer with high hardness, in order to solve the technical problem that if the rock fragments such as falling rocks block or get stuck in the hole in the rock layer and cannot be loosened, the concrete will be blocked during the subsequent grouting process, resulting in the concrete slurry not being able to be completely filled, the inner end of the anchor bolt body 1 is equipped with a drill bit mechanism 4.

[0045] Specifically, the drill bit mechanism 4 includes a drill bit body 41, on which a plurality of flaring grooves 411 are provided, and a plurality of flaring cutter structures are installed in the flaring grooves 411.

[0046] Specifically, the reaming structure includes a triangular cutter body 43, on the outer end face of which a plurality of cutting teeth structures 431 are integrally formed. Specifically, the cutting teeth structures 431 include triangular cutting teeth, the thickness of which is the same as the thickness of the triangular cutter body 43. These teeth are located on the front side of the triangular cutter body 43, and the outer end face of the triangular cutter body 43 is inclined inwards (i.e., inclined backwards). At this time, the outer end face of the triangular cutter body 43 (the face that directly rubs against the rock layer during excavation) is tilted backwards, thus effectively protecting the triangular cutter body 43 during excavation and effectively avoiding the risk of breakage during the excavation process.

[0047] Meanwhile, an arc-shaped gouging structure is fixedly connected to the inner surface of the triangular cutter body 43; specifically, the gouging structure is located above the arc-shaped hole described below. Furthermore, the gouging structure includes an arc-shaped gouging cutter 433, which is welded to the side wall of the triangular cutter body 43.

[0048] During operation, the drill bit first breaks up the rock layer, and then enlarges the hole through the triangular cutter body 43. During this enlargement process, the sharpness of the cutter teeth breaks up the rock layer and creates the enlarged hole. Simultaneously, the rotating cutting tool 433 loosens and disperses the falling debris, minimizing the resistance of the broken rock as the drill bit moves forward and rotates. This reduces the resistance of the drill bit during drilling.

[0049] In order to protect the drill bit structure and achieve cooling and lubrication of the drill bit during the process, a fluid channel structure is also provided on the drill bit body 41 to lubricate the drill bit body 41.

[0050] The aforementioned long channel structure connects to the fluid channel structure. Specifically, the fluid channel structure includes a main channel 411 (connected to the long channel structure) formed on the drill bit body 41. The main channel 411 is connected to several vertically arranged branch channels 412, and the outlet ports of the branch channels 412 are located within the flared groove 411. Specifically, two rows of branch channels 412 are distributed along the length of the flared groove 411; the two rows of branch channels 412 are located on both sides of the triangular cutter body 43.

[0051] During the work, the construction workers pump water under a certain pressure from the anchor body 1 and then through the main channel 411 and out through the diversion channel 412. This serves two purposes: first, to lubricate and cool the triangular cutter body 43; and second, to lubricate the rock strata, thereby reducing the difficulty of excavation and the load on the drill bit body 41.

[0052] The aforementioned triangular cutter body 43 has a weight-reducing hole structure 432. The weight-reducing hole structure 432 aims to reduce the production cost of the triangular cutter body 43. Specifically, the cutter body itself has high stability due to its triangular structure design, and the material used is reduced by opening the hole.

[0053] The above method achieves hole enlargement and slotting. In this process, the hole and slot have a large diameter in the rock strata with high hardness. Not only can the crushed stone not be easily stuck or completely blocked, but the crushed stone can also be easily pushed during grouting. At the same time, the large diameter of the hole and slot allows for a large amount of concrete grout to be filled, resulting in higher stability of the subsequent anchor bolt anchoring.

[0054] The weight reduction hole structure 432 includes a circular through hole 4322 formed on the triangular cutter body 43 and an arc-shaped hole 4321 formed on the side wall of the triangular cutter body 43.

[0055] The anchor body 1 has several grout discharge holes 11 connected to a long channel structure. During operation, concrete grout is discharged from the grout discharge holes 11 and fills the tunnel trench.

[0056] To facilitate the removal of rock and soil debris from the tunnel trench during the trenching process, a spiral debris discharge plate 3 is welded onto the anchor bolt body 1, as is the case with existing methods. The spiral debris discharge plate 3 has a spiral structure and continuously removes rock and soil debris from the tunnel trench during the operation of the rotating anchor bolt body 1.

[0057] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A grouting anchor bolt, characterized in that, It includes an anchor bolt body, with a grout stop plug mechanism installed at the outer end of the anchor bolt body and a drill bit mechanism installed at the inner end of the anchor bolt body; The drill bit mechanism includes a drill bit body, on which a plurality of flaring grooves are provided, and a plurality of flaring cutter structures are installed in the flaring grooves. The expanding structure includes a triangular blade body, and a plurality of cutting teeth are integrally formed on the outer end face of the triangular blade body; The outer end face of the triangular blade is inclined inward, and an arc-shaped scooping structure is fixedly connected to the inner surface of the triangular blade. The drill bit body is also provided with a fluid channel structure, which is used to lubricate the drill bit body.

2. The grouting anchor bolt according to claim 1, characterized in that, The grout stopper mechanism includes a grout stopper threaded onto the anchor bolt body, and the grout stopper mechanism also includes a protective plate slidably mounted on the anchor bolt body; The protective plate is supported on the outside of the grout stop plug, and the outer end of the anchor bolt body is threaded with a locking nut to lock the protective plate.

3. The grouting anchor bolt according to claim 1, characterized in that, The grouting anchor has a long channel structure inside, which is connected to the fluid channel structure.

4. The grouting anchor bolt according to claim 3, characterized in that, The fluid channel structure includes a main channel formed on the drill bit body, and several vertically arranged branch channels are connected to the main channel. The outlet ports of the branch channels are located in the flared grooves.

5. The grouting anchor bolt according to claim 4, characterized in that, The flared groove contains two rows of diversion channels distributed along the length of the groove; the two rows of diversion channels are located on both sides of the triangular cutter body.

6. The grouting anchor bolt according to claim 1, characterized in that, The cutting tooth structure includes triangular cutting teeth, and the thickness of the cutting teeth is the same as the thickness of the triangular cutting body; The triangular blade body has a weight-reducing hole structure.

7. The grouting anchor bolt according to claim 6, characterized in that, The weight reduction hole structure includes a circular through hole formed on the triangular cutter body and an arc-shaped hole formed on the side wall of the triangular cutter body; The cutting tool structure is located above the arc-shaped hole.

8. The grouting anchor bolt according to claim 7, characterized in that, The scooping knife structure includes an arc-shaped scooping knife, which is welded to the side wall of the triangular scooping knife body.

9. The grouting anchor bolt according to claim 3, characterized in that, The anchor bolt body has several grout discharge holes with interconnected long channel structures.

10. The grouting anchor bolt according to claim 1, characterized in that, The anchor bolt body is welded with a spiral slag discharge plate.

Images