Stirring cutter for anchoring anchor rod and anchor rod device

Abstract

The utility model discloses a stirring cutter for anchoring an anchor rod and an anchor rod device. The stirring cutter for the anchor rod comprises a head part and a tail part which are integrally formed, the head part is of a spiral multi-curved-surface structure, and the head part is provided with a spine part extending in the direction away from the tail part; and the tail part is used for connecting an anchor rod. The head of the stirring cutter is of the spiral multi-curved-surface structure, a plurality of stirring surfaces are formed through the multi-curved-surface structure, stress uniformity of the stirring surfaces is improved when the head stirs a resin anchoring agent, impact force borne by the stirring cutter in the process that the stirring cutter is screwed into the anchoring agent can be relieved through the multi-curved-surface structure, and it is guaranteed that the screwing-in process is conducted smoothly; the head part is provided with a spine part extending in the direction away from the tail part, and the tip end of the spine part faces an anchoring agent and is used for puncturing the anchoring agent when the stirring cutter is screwed into the anchoring agent, so that the anchor rod is anchored; the tail of the stirring cutter is used for being connected with an anchor rod, so that the stirring cutter can be conveniently pushed into the anchoring hole through the anchor rod in the anchor rod supporting process, and the anchoring agent is stirred.

Description

TECHNICAL FIELD

[0001] The utility model relates to a supporting device technical field, especially, relate to a kind of stirrer and anchor rod device for anchor rod anchoring. BACKGROUND

[0002] In the field of coal mine, tunnel and revetment, in order to maintain the stability of roadway, tunnel and revetment, prevent surrounding rock collapse or excessive deformation, roadway and tunnel are generally supported after tunneling, and currently, anchor rod, anchor cable and anchor net are generally used for support. Most of the anchor rod support will consider using hollow anchor rod for drilling and anchoring. The commonly used anchoring methods are as follows: (1) first, drilling is performed on the sidewall of the tunnel or roadway. After drilling is completed, resin anchoring agent is placed in the hole. Then, the hollow anchor rod is inserted into the hole, and the resin anchoring agent is crushed to achieve the anchoring process of the anchor rod. The front end of the hollow anchor rod is generally provided with an anchor rod stirrer, which is one of the standard accessories of the prestressed resin anchoring agent anchor rod. The main function is to pierce the anchoring agent package at the front end of the anchor rod and uniformly stir and push the anchoring agent to anchor the anchor rod. (2) Instead of using resin anchoring agent for anchoring, cement mortar is poured into the hollow anchor rod for anchoring. However, this method is more complicated to operate, as each anchor rod needs to be poured separately, resulting in low construction efficiency. Moreover, the anchoring effect of the mortar is generally weaker than that of the resin anchoring agent. (3) The method uses an internal resin anchoring agent. This method has a small range of application in the prior art. The main advantage is that after drilling is completed, the resin anchoring agent can be squeezed from the inside of the rod body to the bottom of the hole during the rotation of the anchor rod and crushed to complete anchoring, thereby simplifying the process. However, the market cost is relatively high.

[0003] Chinese patent CN118499037A discloses a built-in anchoring agent rotary prestressed anchor rod, which comprises an anchoring segment rod body, a hollow anchor rod, an anchor head, a through hole provided in the anchoring segment rod body along the length direction of the rod body, and a resin anchoring agent placed in the through hole. The anchor head is fixed to one end of the anchoring segment rod body, and the anchor head extends into the anchoring segment rod body. The anchor head is provided with a spiral concrete stirrer at one end, the outer diameter of the spiral concrete stirrer is matched with the inner diameter of the through hole, and the end of the spiral concrete stirrer facing the resin anchoring agent is provided with a sharp part. In this patent, the stirrer is arranged at the bottom of the through hole of the anchoring segment rod body. The anchoring agent is pushed to the stirrer by the hollow anchor rod, and the anchoring agent is pierced by the stirrer. This stirrer is not connected with the anchor rod, and the anchoring agent cannot be mixed uniformly by using the stirrer.

[0004] The Chinese patent CN221299216U discloses an embedded resin anchor rod, which comprises a sleeve; one end of the sleeve is provided with a pawl, the other end of the sleeve is provided with a flared mouth, the outer side of the sleeve is provided with a grout outlet, the flared mouth is connected with a connector, the inner side of the connector is threadedly connected with an anchor rod body, the inside of the sleeve is provided with a resin roll, and the sleeve further comprises a reamer for crushing the resin roll. The stirring blade disclosed by the patent only contains a sharp part, and cannot well stir the broken anchoring agent, and is inconvenient to use.

[0005] In addition, the stirring blades on the market at present are mostly sand-cast cast iron stirring blades, and the cast iron stirring blades have high cost, and the manufacturing process is complex and tedious. Practical new type content

[0006] The utility model provides a stirring blade and anchor rod device for anchor rod anchoring, to solve the technical problem that the prior stirring blade has poor use effect and high manufacturing cost.

[0007] According to one aspect of the utility model, a stirring blade for anchor rod anchoring is provided, wherein the anchor rod stirring blade comprises an integrally formed head and tail;

[0008] The head is a multi-curved surface structure in a spiral shape, and the head is provided with a sharp part extending away from the tail.

[0009] The tail is used for connecting the anchor rod.

[0010] Further, the sharp part is provided with a plurality of sharp spikes.

[0011] Further, the plurality of sharp spikes are arranged at intervals.

[0012] Further, the first end of the sharp spike is a sharp end, and the second end of the sharp spike is a flat structure with a width greater than the sharp end; and the second end of the sharp end is used for connecting the head.

[0013] Further, the head is a double helix structure.

[0014] Further, the double helix structure comprises a first helix part and a second helix part, and the first helix part and the second helix part are twisted to form a symmetrical structure.

[0015] Further, the front and rear ends of the first helix part and the second helix part are twisted by 180°.

[0016] Further, the width of the head is greater than the width of the tail.

[0017] Further, the tail is provided with an external thread.

[0018] According to the utility model, the head and the tail of the anchor rod stirring blade are integrally formed, and the anchor rod stirring blade can be integrally formed by pouring in one time in the preparation process, so that the machining process is reduced and the machining cost is lowered.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] The head and the tail of the anchor rod stirring blade are integrally formed, and the anchor rod stirring blade can be integrally formed by pouring in one time in the preparation process, so that the machining process is reduced and the machining cost is lowered.

[0021] The head and the tail of the anchor rod stirring blade are integrally formed, and the anchor rod stirring blade can be integrally formed by pouring in one time in the preparation process, so that the machining process is reduced and the machining cost is lowered.

[0022] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. ACCURATE DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and are not intended to limit the present application. In the drawings:

[0024] Figure 1 It is a sectional view of the utility model.

[0025] Figure 2 It is a side view of the utility model.

[0026] Figure 3 It is a schematic view of the utility model.

[0027] In the figure: 1, head; 2, tail; 3, sharp part; 4, first spiral part; 5, second spiral part. DETAILED DESCRIPTION

[0028] In order to make the application purpose, technical scheme and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in combination with embodiments. It should be understood that the embodiments described in the specification are only for the purpose of explaining the utility model and are not intended to limit the utility model. For simplicity, only some numerical ranges are explicitly disclosed in this document. However, any lower limit can be combined with any upper limit to form a range that is not explicitly recited; and any lower limit can be combined with other lower limits to form a range that is not explicitly recited, and similarly any upper limit can be combined with any other upper limit to form a range that is not explicitly recited. In addition, although not explicitly recited, each point or single numerical value between the range endpoints is included in the range. Thus, each point or single numerical value can be combined as a lower limit or an upper limit with any other point or single numerical value or with other lower limits or upper limits to form a range that is not explicitly recited. In the description herein, it should be noted that, unless otherwise stated, "above", "below" include the number, "one or more" means two or more, and "a plurality of" means two or more.

[0029] The first aspect of the utility model provides a kind of stirrer for anchor rod anchoring, the anchor rod stirrer includes integrally formed head 1 and tail 2;

[0030] The head 1 is helical multi-surface structure, the head 1 is provided with the sharp part 3 extending away from the tail 2 direction;

[0031] The tail 2 is used to connect anchor rod.

[0032] The anchor rod stirrer of the utility model is integrally formed by composite material injection molding, to solve the problem of high cost and complex preparation process of stirrer with cast iron material or other metal materials in the prior art. The composite material stirrer of the utility model can be integrally molded by high-performance reinforcing fibers such as basalt fiber, glass fiber, etc. and high-performance plastic, resin matrix and its additives at high temperature one-time. The anchor rod stirrer molded by this composite material has the characteristics of light weight, high strength, excellent flame retardant performance, etc. At the same time, the molding process is simple, and the manufacturing cost is relatively low. It is an excellent way to replace cast iron anchor rod stirrer.

[0033] The head 1 of the stirring blade is a spiral multi-curved surface structure, wherein the spiral structure can be one of a single spiral, a double spiral or a multi-spiral structure, the rotation direction of the spiral structure is consistent with the rotation direction of the stirring blade, so that the stirring blade is more smoothly rotated into the anchoring agent. The spiral multi-curved surface structure has rotational symmetry, and continuously rotates around the central axis of the head 1, and has strong stability. The spiral structure is arranged to form the multi-curved surface structure, wherein the multi-curved surface structure is two or more curved surfaces, each curved surface extends outward along the central axis of the head 1, and forms a curved stirring surface with a certain width, so as to strengthen the central axis of the head 1, and the multiple stirring surfaces can disperse the impact force received by the stirring blade when rotating into the anchoring agent, so that the rotating process is more relaxed. Meanwhile, the multiple stirring surfaces can better stir the anchoring agent, so that the anchoring agent is fully mixed and uniform, and the anchoring force of the anchoring agent is improved. The tail 2 is connected with the anchor rod, and the connection between the tail 2 of the stirring blade and the anchor rod is detachable, such as buckle connection, threaded connection or connection through other connecting pieces. In this embodiment, the threaded connection is preferred. An external thread matched with the internal thread of the anchor rod can be arranged on the tail 2. During use, the connection between the stirring blade and the anchor rod is tightened by rotating the anchor rod, so that the anchor rod can drive the stirring blade to pierce the anchoring agent. After the anchoring agent is pierced, the anchoring agent needs to be stirred, and the anchoring agent can have stronger anchoring force only when it is uniformly stirred. After the anchoring agent is stirred and solidified for a period of time, the end of the anchor rod is anchored by the anchoring agent.

[0034] The head 1 and the tail 2 of the anchor rod stirring blade are integrally formed, and can be integrally cast in the preparation process, so that the processing procedure is reduced and the processing cost is lowered. The head 1 is a spiral multi-curved surface structure, multiple stirring surfaces are formed by the multi-curved surface structure, the stress uniformity of each stirring surface during stirring of the resin anchoring agent is improved, the stability of the head 1 is higher, and the multi-curved surface structure can also slow down the impact force received by the stirring blade during the rotating process into the anchoring agent, so that the rotating process is smoothly performed. The head 1 is provided with a sharp part 3 extending away from the tail 2, and the tip of the sharp part 3 faces the anchoring agent, so as to pierce the anchoring agent when the stirring blade rotates into the anchoring agent, thereby anchoring the anchor rod. The tail 2 of the stirring blade is used for connecting the anchor rod, so that the anchor rod can be used to push the stirring blade into the anchoring hole during the anchor rod supporting process, and the rotation of the anchor rod can drive the stirring blade to rotate to pierce the anchoring agent and stir the anchoring agent.

[0035] The stirring blade in the prior art is arranged at the bottom of the through hole of the anchoring section rod body, and only contains a sharp part for piercing the anchoring agent. The stirring effect on the anchoring agent is poor, and the stirring blade is difficult to be driven to rotate by the anchor rod to stir the anchoring agent during use, so that the use is inconvenient. However, the stirring blade of the utility model can be used to push the anchoring agent into the bottom of the anchoring hole by the anchor rod and stir the anchoring agent by the spiral multi-curved surface structure to improve the anchoring capacity during use, so that the use is convenient and the stirring effect is better.

[0036] In the embodiment of the utility model, the sharp part 3 is equipped with several sharp spikes. The number of the sharp spikes can be set to one, two, three or more, and in the embodiment, two sharp spikes are preferably set, which can increase the force bearing surface of the stirring tool and the anchoring agent, and more easily break the anchoring agent during the rotation of the stirring tool, avoiding the situation that the anchoring agent cannot be broken and the anchor rod cannot be anchored.

[0037] In the embodiment of the utility model, the several sharp spikes are arranged at intervals. The several sharp spikes are arranged at intervals in the application, which can facilitate the breaking of different parts of the anchoring agent, improve the stress of the contact points of the sharp part 3 and the anchoring agent, and facilitate the breaking of the anchoring agent.

[0038] In the embodiment of the utility model, the first end of the sharp spike is a sharp end, and the second end of the sharp spike is a flat structure with a width greater than the sharp end; the second end of the sharp end is used for connecting the head 1. In the application, the shape and size of the two sharp spikes are consistent, the sharp end of the sharp spike is used for breaking the anchoring agent, and the second end of the sharp end is a flat structure, which can improve the overall strength of the sharp spike and avoid the situation that the sharp spike is broken during use. At the same time, the flat structure of the sharp end is used for connecting the curved surface structure of the head 1, increasing the contact area of the sharp spike and the curved surface structure, and improving the connection stability of the sharp spike.

[0039] In the embodiment of the utility model, the head 1 is a double helix structure. The head 1 is designed as a double helix structure in the application, which has the following advantages: 1) the shape of the helical structure makes it have high bending and torsional resistance, and can bear large external force and torque. When the stirring tool is rotated into the anchoring agent and the anchoring agent is stirred, the impact force received is dispersed through the multi-curved surface structure of the double helix structure, so as to improve its ability to bear external force. 2) The shape of the helical structure makes it have good self-stability, and its shape is not easy to deform when subjected to external force, so it can maintain the stability of the original structure. The rotation direction of the double helix structure of the head 1 of the application is consistent with the rotation direction of the stirring tool, so it can slow down the impact force received by the stirring tool during rotation, reduce deformation and improve stability. 3) The shape of the helical structure makes it have good fatigue life, and the degree of fatigue damage is small when subjected to reciprocating force, so it has a long service life. 4) The shape of the helical structure makes it have high strength and stability, and under the premise of the same strength and stability, the weight of the helical structure is lighter. The stirring tool of the application adopts a helical structure with light weight, which can make the construction process more labor-saving.

[0040] In the embodiment of the utility model, the double helix structure includes a first helical part 4 and a second helical part 5, and the first helical part 4 and the second helical part 5 are intertwined to form a symmetrical structure. The application adopts a symmetrical double helix structure, which plays a role in dispersing the stress of the stirring surface, improving the stability of the stirring tool head 1, and reducing the impact force received by the stirring tool when rotating into the anchoring agent.

[0041] In the embodiment of the utility model, the first spiral part 4 and the second spiral part 5 are all 180 ° twisted at the front and back ends. The first spiral part 4 and the second spiral part 5 are respectively arranged on the two sides of the first end of the head 1, spirally cross to the second end of the head 1 in opposite directions, and are respectively arranged on the two sides of the second end, forming 180 ° twist. This arrangement can increase the width of the multi-curved surface structure of the head 1 to improve the stress capacity and stability of the stirring tool.

[0042] In the embodiment of the utility model, the width of the head 1 is greater than the width of the tail 2. The greater width of the head 1 can improve the stirring capacity of the stirring tool, so that the stirring tool can quickly stir the anchoring agent uniformly.

[0043] In the embodiment of the utility model, the tail 2 is provided with external threads. The anchor rod used in the application is of a hollow structure, and the tail 2 is provided with external threads, and the anchor rod is provided with internal threads, so that the stirring tool is threadedly connected with the anchor rod through the tail 2, facilitating installation. At the same time, the anchor rod is continuously rotated during use, so that the connection between the anchor rod and the stirring tool becomes tighter and tighter, increasing the rotating force, which helps the stirring tool to drill through the anchoring agent.

[0044] The second aspect of the embodiment of the utility model provides an anchor rod device, which comprises an anchor rod, and the stirring tool for anchoring the anchor rod is mounted on the anchor rod.

[0045] The anchor rod device is connected with the stirring tool on the anchor rod, so that the stirring tool can pierce the anchoring agent and stir the anchoring agent, thereby improving the anchoring capacity of the anchoring agent, and the anchor rod can be anchored in the hole for anchor support after the anchoring agent solidifies.

[0046] The head and the tail are integrally formed to reduce manufacturing cost, the tail is connected with the anchor rod, the anchor rod can directly drive the reamer to rotate, thereby stirring the anchoring agent, which is convenient to use, the head with the spiral multi-curved surface structure stirs the anchoring agent to ensure smooth screwing, further improves the convenience during use, and the sharp part increases the stress area with the anchoring agent to improve the stirring effect on the anchoring agent.

[0047] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A churn drill for anchoring of a rock bolt, characterized in that, The anchor rod stirrer comprises a head (1) and a tail (2) which are integrally formed; The head (1) is a multi-curved surface structure in a spiral shape, and the head (1) is provided with a sharp portion (3) extending away from the tail (2); The tail (2) is used for connecting the anchor rod.

2. A churn drill for rock bolt anchoring according to claim 1, characterised in that, The sharp portion (3) is provided with a plurality of sharp spikes.

3. A churn drill for rock bolt anchoring according to claim 2, characterised in that, The plurality of sharp spikes are arranged at intervals.

4. A churn drill for rock bolt anchoring according to claim 3, characterised in that, The first end of the sharp spike is a pointed end, and the second end of the sharp spike is a flat structure with a width greater than that of the pointed end; the second end of the sharp spike is used for connecting the head (1).

5. A churn drill for rock bolt anchoring according to claim 1, characterised in that, The head (1) is a double helix structure.

6. A churn drill for rock bolt anchoring according to claim 5, characterised in that, The double helix structure comprises a first helical portion (4) and a second helical portion (5), and the first helical portion (4) and the second helical portion (5) are twisted to form a symmetrical structure.

7. A churn drill for rock bolt anchoring according to claim 6, characterised in that, The front and rear ends of the first helical portion (4) and the second helical portion (5) are twisted by 180°.

8. A churn drill for rock bolt anchoring according to claim 1, characterised in that, The width of the head (1) is greater than the width of the tail (2).

9. A churn drill for rock bolt anchoring according to claim 1, characterised in that, The tail (2) is provided with an external thread.

10. An anchor rod device, characterized by An anchor rod is provided, and the anchor rod is provided with the stirrer for anchoring the anchor rod according to any one of claims 1-9.

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