Rotary-cut synergistic stirring device for resin anchoring agent

Abstract

According to the rotary-cut synergistic stirring device for the resin anchoring agent, a bag breaking conical head and a metal blade are arranged on a base, the crushing and stirring functions can be achieved, the crushing and stirring effects of the resin anchoring agent are effectively improved, the bonding effect of the resin anchoring agent is enhanced, and then the supporting strength of an anchor rod anchoring system is improved; the device has the advantages of being good in using effect, reasonable and simple in structure, convenient to operate and high in dynamic adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine support technical field especially a resin anchoring agent rotary cutting synergism stirring device.

BACKGROUND TECHNIQUE

[0002] Anchor rod support technology is widely used in mine and geotechnical engineering with its obvious technical and economic superiority. As a common anchoring method in anchor rod support technology, resin anchoring agent has the advantages of fast bearing, high strength, fatigue resistance, strong adaptability, and convenient use. However, with the increasing depth of mine exploitation, the geological conditions are more complex and diverse, such as soft rock, high ground stress, loose and broken surrounding rock, etc. These conditions are prone to cause insufficient support strength and even anchor system failure. In order to ensure the safety and effectiveness of the anchor system and reduce the safety hazards caused by the failure of the anchor system, higher requirements are put forward for the support strength and effect of the anchor system. Research shows that higher prestress plays an important role in improving the stability of the anchor system. In the anchor system, resin anchoring agent is the main bonding agent between anchor rod and surrounding rock, which not only bonds anchor rod and surrounding rock together, but also transfers the stress inside the anchor system to make the anchor rod play a supporting role. The bonding quality between resin anchoring agent and surrounding rock is the premise of achieving higher prestress and anchor quality. Anchor rod mixing resin anchoring agent is an important process in the anchor construction process, and the anchor performance is closely related to the mixing effect of resin anchoring agent. Therefore, it is of great significance to achieve full mixing and solidification of the anchoring agent.

[0003] During anchor bolt support construction, the resin anchoring agent is often broken and mixed solely by the anchor bolt body. However, due to the structural characteristics of the anchor bolt itself, it cannot achieve a good breaking and thorough mixing effect on the resin anchoring agent. In engineering applications, the mixing effect of the resin anchoring agent is often poor, the outer plastic packaging is not completely broken, and there is even a phenomenon where the plastic packaging wraps around the anchor bolt body. This results in the resin anchoring agent not being able to completely bond the anchor bolt to the surrounding rock, which seriously affects the anchoring quality of the resin anchor bolt. Existing auxiliary devices or components for crushing and enhancing the mixing of resin anchoring agents, such as CN202021444982.0, which uses a combination of spiral blades and crushing heads, require multiple components to be installed at intervals, resulting in a complex structure, low construction efficiency, and easy clogging. The crushing head is made of spiral blades, which cannot automatically adjust the cutting depth according to the borehole diameter or resin viscosity, and is prone to chipping in hard rock boreholes. CN201910624803.7 requires the installation of three levels of components: front, middle, and rear, which is time-consuming and has poor construction economy. In CN201811510325.9, the maximum rotation diameter of the crushing blade is equal to the outer diameter of the sleeve, which cannot cover the entire cross-section of the borehole, and the residual packaging bag at the edge causes the "glove phenomenon". Therefore, based on this technical background, and considering the shortcomings of existing technologies such as structural redundancy, poor construction economy, and poor dynamic adaptability, there is an urgent need to design an auxiliary component that has better performance, reasonable and simple structure, and is easy to operate, so as to improve the crushing and mixing effect of resin anchoring agent, enhance the bonding effect of resin anchoring agent, and thus improve the support strength of anchor bolt anchoring system. [Utility Model Content]

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a resin anchoring agent rotary cutting and mixing device and method. By setting the bag breaking cone and metal blade on the base, the crushing and mixing functions can be realized, which can effectively improve the crushing and mixing effect of the resin anchoring agent, enhance the bonding effect of the resin anchoring agent, and thus improve the support strength of the anchor bolt anchoring system. It has the characteristics of good performance, reasonable and simple structure, easy operation, and high dynamic adaptability.

[0005] This utility model is achieved through the following technical solution:

[0006] A resin anchoring agent rotary cutting and enhancing mixing device includes a base 1 for direct or indirect connection with the anchor rod body. The front end of the base 1 is provided with a bag-breaking cone 2. The peripheral wall of the base 1 is provided with at least one metal blade 3. The root of the metal blade 3 is rotatably connected to the peripheral wall of the base 1. The metal blade 3 is configured to rotate with the base 1 during rotation and rotate outward relative to the base 1.

[0007] As described above, in a resin anchoring agent rotary cutting and enhancing mixing device, a plurality of metal blades 3 are evenly spaced and distributed on the periphery of the base 1.

[0008] The metal blade 3 is provided with blade serrated edges 31.

[0009] The metal blade 3 is provided with blade serrated edges 31.

[0010] The metal blade 3 is provided with blade serrated edges 31.

[0011] The metal blade 3 is provided with blade serrated edges 31.

[0012] The metal blade 3 is provided with blade serrated edges 31.

[0013] The metal blade 3 is provided with blade serrated edges 31.

[0014] The metal blade 3 is provided with blade serrated edges 31.

[0015] The metal blade 3 is provided with blade serrated edges 31.

[0016] The metal blade 3 is provided with blade serrated edges 31.

[0017] S1, connecting the base 1 to the anchor rod body;

[0018] S2, after the anchor rod body pushes the resin anchoring agent to the bottom of the anchoring hole through the stirring device, the bag breaking cone head 2 pierces the resin anchoring agent packaging bag;

[0019] S3, the base is driven by the anchor rod body of the drilling machine to rotate right, the metal blade is unfolded under the centrifugal force, the blade serration cuts the residual package, the spiral flow guide groove pushes the resin to form a turbulent flow, and full mixing is realized.

[0020] S4, the resin anchoring agent wraps the metal blade, with the solidification of the resin anchoring agent, the blade serration of the metal blade forms mechanical anchoring with the solidified resin, the stirring device and the anchor rod body are bonded in the drill hole together and participate in bearing.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] 1, the utility model discloses a broken bag cone head and metal blade are arranged on the base, can realize the broken and stirring function, effectively improve the broken and stirring effect of resin anchoring agent, strengthen the bonding effect of resin anchoring agent, and then enhance the support strength of anchor rod anchoring system, have the characteristics such as good use effect, reasonable and simple structure, convenient operation, high dynamic adaptability.

[0023] 2, the metal blade serration cuts the package bag after unfolding, and the metal blade cooperates with the spiral flow guide groove, and the resin mixing uniformity is effectively enhanced.

[0024] 3, the metal blade is configured to rotate and unfold outward relative to the base during the rotation of the base, that is, the metal blade can automatically adjust the unfolding angle according to the rotation speed of the base, and adapt to different drill hole sizes.

[0025] 4, the metal blade is arranged in a wing type streamline structure, which can effectively reduce the resistance of the resin.

[0026] 5, the utility model discloses a broken bag cone head and metal blade are arranged on the base, can realize the broken and stirring function, effectively improve the broken and stirring effect of resin anchoring agent, strengthen the bonding effect of resin anchoring agent, and then enhance the support strength of anchor rod anchoring system, have the characteristics such as good use effect, reasonable and simple structure, convenient operation, high dynamic adaptability.

[0027] 6, the metal blade and the blade serration in the utility model are embedded in the solidified resin, forming mechanical interlocking, improving the anchoring force, and the unfolded metal blade can provide effective constraint for the anchor rod in the anchoring agent stirring stage, so that the anchor rod can always be located in the center area of the anchoring hole, ensuring that the anchor rod has good centering effect after anchoring, and being beneficial to the stability of the anchoring system.

DESCRIPTION OF DRAWINGS

[0028] The specific embodiments of the utility model will be further described in detail below with reference to the drawings, and specifically:

[0029] Figure 1 It is one of the three-dimensional structure schematic diagrams of the utility model.

[0030] Figure 2It is the second three-dimensional structure schematic view of the utility model.

[0031] Figure 3 It is the side view structure schematic view of the utility model.

[0032] Figure 4 It is the top view structure schematic view of the utility model.

[0033] Figure 5 It is the schematic view when the utility model is connected with the anchor rod body.

CONCRETE IMPLEMENTATIONS

[0034] The embodiments of the utility model will be explained in detail below with reference to the drawings.

[0035] As Figures 1-5 shown, the utility model discloses a resin anchoring agent rotary cutting synergistic stirring device, including the pedestal 1 for directly or indirectly connecting with the anchor rod body, the pedestal 1 front end is equipped with the bag breaking cone head 2, the pedestal 1 peripheral wall is equipped with at least one metal blade 3, the metal blade 3 root is rotatably connected with the peripheral wall of pedestal 1, the metal blade 3 is configured to rotate with the pedestal 1 during the rotation of pedestal 1 and rotate outward and unfold relative to the pedestal 1. The utility model discloses a bag breaking cone head and metal blade are arranged on the pedestal, can realize the function of crushing and stirring, effectively improves the crushing and stirring effect of resin anchoring agent, enhances the bonding effect of resin anchoring agent, and then improves the support strength of anchor rod anchoring system, has the characteristics such as better use effect, reasonable and simple structure, convenient operation and high dynamic adaptability.

[0036] In the utility model, resin anchoring agent is wrapped in metal blade, with the solidification of resin anchoring agent, the blade serrated edge of metal blade forms mechanical anchoring with solidified resin, so that the stirring device and anchor rod body are bonded together in the borehole, jointly participate in bearing, and effectively improve anchoring force.

[0037] As Figure 2 shown, the rear end of pedestal 1 is equipped with a threaded connection hole for the threaded rotation of the head of anchor rod body, convenient and efficient installation.

[0038] In the utility model, the angle range of the outward rotation and unfolding of metal blade 3 relative to pedestal 1 is 0-90 °.

[0039] As Figures 1-4 shown, in order to improve the stability and effect of stirring, a plurality of metal blades 3 are evenly spaced and distributed on the peripheral wall of pedestal 1. The number of the plurality of metal blades 3 can be 2, 3, 4, 5 or the like, and 4 metal blades are used in the embodiment.

[0040] As Figures 1-4As shown, in order to improve the cutting effect, the metal blade 3 edge is provided with blade serrated edge 31. In order to improve the structural strength, the metal blade 3 is made of 65Mn spring steel.

[0041] In order to effectively reduce the resistance of the resin to the metal blade, the metal blade 3 is arranged in a wing type streamline structure, and the thickness and width of the root of the metal blade 3 gradually decrease in the tail direction. As shown in the figure, Figures 1-4 As shown, the inner surface of the metal blade 3 is a plane, and the outer surface is an arc surface. Among them, the length of the metal blade 3 is 30mm, the thickness of the root gradually changes from 2.0mm to 0.8mm, and the width of the root gradually changes from 10mm to 8mm.

[0042] The metal blade 3 and the base 1 are provided with a blade driving elastic element for assisting the outward rotation and expansion of the metal blade 3, which is not shown in the figure, and can provide a continuous expansion torque for the metal blade.

[0043] Preferably, in order to connect reliably and stably and rotate smoothly and stably, the metal blade 3 is hinged between the root of the base 1. In this embodiment, the hinge is fixed with the base by micro laser welding.

[0044] The hinge is provided with a blade driving elastic element for assisting the outward rotation and expansion of the metal blade 3, which is not shown in the figure, and can provide a continuous expansion torque for the metal blade. Among them, the blade driving elastic element can be a micro torsion spring, and the pre-tightening torque is greater than or equal to 8N·mm.

[0045] In order to improve the structural strength and reduce the assembly steps, the bag breaking cone head 2 and the base 1 are integrally formed as a whole.

[0046] The outer surface of the base 1 is provided with a spiral flow guide groove 4, and the flow direction of the spiral flow guide groove 4 is opposite to the rotation direction of the base 1, forming a reverse stirring, which can improve the stirring efficiency. When stirring, the drill drives the anchor rod body to rotate to the right, the metal blade expands under the centrifugal force, the blade serrated edge cuts the residual packaging, the spiral flow guide groove pushes the resin to form a turbulent flow, and the mixing is realized. In this embodiment, the spiral flow guide groove 4 has a groove width of 6mm, a depth of 2-3mm, covers the middle and rear section of the base 30mm, and has 2 turns.

[0047] The utility model has the advantages of overall length of 60mm, weight of less than 200g, single-piece casting forming, simple process, and is suitable for batch production.

[0048] The utility model also provides a kind of operation method of resin anchoring agent rotary cutting synergistic stirring device, use a kind of resin anchoring agent rotary cutting synergistic stirring device, the stirring device includes the pedestal 1 for being directly or indirectly connected with anchor rod body, the pedestal 1 front end is equipped with bag breaking cone head 2, the perimeter wall of the pedestal 1 is equipped with at least one metal blade 3, the metal blade 3 root is rotatably connected with the perimeter wall of pedestal 1, the metal blade 3 is configured to when the rotation of pedestal 1 corresponding rotation and relatively pedestal 1 outward rotation unfolds, the metal blade 3 edge is equipped with blade serrated edge 31;The outer surface of the pedestal 1 is equipped with helical flow guide groove 4, the flow direction of the helical flow guide groove 4 is opposite with the rotation direction of pedestal 1;The operation method includes the following steps:

[0049] S1, pedestal 1 is connected to anchor rod body;

[0050] S2, after anchor rod body pushes resin anchoring agent to anchoring hole bottom by stirring device, bag breaking cone head 2 punctures resin anchoring agent packaging bag;

[0051] S3, by rig drive anchor rod body drives pedestal right rotation, metal blade unfolds under centrifugal force, blade serrated edge cuts residual package, helical flow guide groove pushes resin to form turbulent flow, realizes sufficient mixing;

[0052] S4, resin anchoring agent wraps metal blade, along with the solidification of resin anchoring agent, the blade serrated edge of metal blade forms mechanical anchoring with solidified resin, stirring device and anchor rod body are bonded together in drill hole, jointly participate in load bearing. The operation method of the utility model effectively improves the crushing and stirring effect of resin anchoring agent, enhances the bonding effect of resin anchoring agent, and further improves the support strength of anchor rod anchoring system, with the characteristics of good use effect, reasonable and simple structure, easy operation, high dynamic adaptability.

Claims

1. A resin anchoring agent rotary cutting and enhancing mixing device, characterized in that... It includes a base (1) for direct or indirect connection with the anchor rod body, the base (1) having a bag-breaking cone (2) at its front end, and at least one metal blade (3) on the peripheral wall of the base (1), the root of the metal blade (3) being rotatably connected to the peripheral wall of the base (1), and the metal blade (3) being configured to rotate accordingly with the base (1) and rotate outward relative to the base (1) during the rotation of the base (1).

2. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... The plurality of metal blades (3) are evenly spaced on the periphery of the base (1).

3. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... The metal blade (3) has a serrated edge (31) on its edge.

4. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... The metal blade (3) is arranged in an airfoil-shaped streamlined structure, and the thickness and width of the metal blade (3) gradually decrease from the root to the tail.

5. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... A blade drive elastic element is provided between the metal blade (3) and the base (1) to assist the metal blade (3) in rotating outward and unfolding.

6. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... The metal blade (3) is hinged to the base (1) at its root.

7. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 6, characterized in that... The hinge is provided with a blade-driving elastic element for assisting the metal blade (3) to rotate outward and unfold.

8. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 1, characterized in that... The bag-breaking cone (2) and the base (1) are integrally formed.

9. A resin anchoring agent rotary cutting and enhancing mixing device according to any one of claims 1-8, characterized in that... The outer surface of the base (1) is provided with a spiral guide groove (4).

10. The resin anchoring agent rotary cutting and enhancing mixing device according to claim 9, characterized in that... The flow direction of the spiral guide groove (4) is opposite to the rotation direction of the base (1).

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