Anchor rod driving assembly

Abstract

The utility model discloses an anchor rod driving assembly which comprises a driving nut, a first limiting piece and a second limiting piece, the first limiting piece, the driving nut and the second limiting piece are sequentially arranged, the first limiting piece is used for limiting the driving nut to move away from the second limiting piece when the driving nut rotates forwards, and the second limiting piece is used for limiting the driving nut to move away from the second limiting piece when the driving nut rotates forwards. When the torque is increased to be larger than the yield limit of the first limiting piece, the driving nut damages the first limiting piece to break through limiting and move in the direction away from the second limiting piece; the second limiting piece is used for limiting the driving nut to move away from the first limiting piece when the driving nut rotates reversely. Forward and reverse rotation driving of the anchor rod can be achieved by arranging the driving nut, the first limiting piece and the second limiting piece, meanwhile, axial displacement of the driving nut during forward and reverse rotation is limited through the first limiting piece and the second limiting piece, the driving nut can only rotate in the forward direction or in the reverse direction, and then the driving nut drives the anchor rod to rotate in the forward direction or in the reverse direction.

Description

Technical Field

[0001] This utility model relates to the field of anchoring device technology, and in particular to an anchor rod driving assembly. Background Technology

[0002] Rods are typically driven to rotate by mechanical assistance. For example, during anchor drilling, the rod is driven to rotate by connecting to the rock drill or drilling rig via the drill bit. However, anchor rods are usually connected to the drill bit by a thread or the drill sleeve is driven by a nut. Therefore, the anchor rod can only rotate in one direction. If it rotates in the opposite direction, there will be axial displacement between the drill bit and the anchor rod.

[0003] To address this issue, existing technologies, such as the patent with publication number CN117404123A, disclose a driving fixture for driving anchor rods in both forward and reverse directions. During reverse rotation, a bolt at the front end of the driving component is used for limiting axial movement of the anchor rod (driving nut). However, with this structure, the bolt protrudes from the driving fixture and rotates synchronously with it, making it prone to interference with other objects and potential injury. Furthermore, when a forward axial displacement (for the drill bit / anchor head end) is required between the driving nut and the drill sleeve, the bolt must be manually removed, resulting in low automation. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an anchor bolt driving assembly. By setting a driving nut, a first limiting member, and a second limiting member, the anchor bolt can be driven in both forward and reverse directions. At the same time, the first limiting member and the second limiting member restrict the axial displacement of the driving nut when it rotates in both directions, so that the driving nut can only rotate in the forward or reverse direction, thereby driving the anchor bolt to rotate in the forward or reverse direction.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An anchor bolt drive assembly includes a drive nut, a first limiting member, and a second limiting member. The first limiting member, the drive nut, and the second limiting member are arranged sequentially. The first limiting member is used to restrict the drive nut from moving away from the second limiting member when it rotates clockwise. When the drive nut rotates clockwise, if the torque increases to a value greater than the yield limit of the first limiting member, the drive nut will break through the first limiting member and move away from the second limiting member.

[0007] The second limiting member is used to restrict the drive nut from moving away from the first limiting member when it reverses.

[0008] Furthermore, the first limiting member, the driving nut, and the second limiting member are coaxially arranged outside the anchor rod in sequence.

[0009] Furthermore, the first limiting member includes a sleeve, the two ends of which abut against the end face of the drive nut and the pad outside the anchor rod, respectively.

[0010] Furthermore, it also includes a spherical washer, which is disposed between the pad and the sleeve, and the end of the sleeve away from the drive nut has a tapered structure.

[0011] Furthermore, the spherical washer and sleeve are made of a material with a strength less than that of the pad.

[0012] Furthermore, the spherical washer and sleeve are made of plastic.

[0013] Furthermore, the second limiting member includes a connecting portion with an internal thread, the connecting portion being threadedly connected to the anchor rod, and the size of the second limiting member is smaller than the size of the driving nut.

[0014] Furthermore, the connecting part is a nut or a sleeve.

[0015] Furthermore, a sealing ring groove is provided on the outside of the connecting part, and a sealing ring is provided inside the sealing ring groove.

[0016] The beneficial effects of this utility model are:

[0017] 1) This utility model can realize the forward and reverse rotation of the anchor rod by setting a driving nut, a first limiting member, and a second limiting member. At the same time, the first limiting member and the second limiting member restrict the axial displacement of the driving nut when it rotates forward and reverse, so that the driving nut can only rotate forward or in the opposite direction, thereby driving the anchor rod to rotate forward or in the opposite direction.

[0018] 2) This utility model can also test the anchoring effect of the anchoring agent. If the anchoring effect meets the standard, the rotation of the anchor rod is restricted, and the drive nut rotates relative to the anchor rod under the action of the fiber sleeve. If the anchoring effect does not meet the standard, the drive nut drives the anchor rod to rotate synchronously under the action of the fiber sleeve. Attached Figure Description

[0019] Figure 1 This is a front view of the anchor bolt drive assembly in an embodiment of this utility model;

[0020] Figure 2 for Figure 1 Sectional view along line AA;

[0021] Figure 3 An exploded view of the anchor bolt drive assembly;

[0022] Figure 4 for Figure 2 Enlarged view of point B in the middle section;

[0023] In the figure, 1. Drive nut; 2. First limiting component; 3. Second limiting component; 4. Anchor rod; 5. Sleeve; 6. Pad; 7. Spherical washer; 8. Connecting part; 9. Sealing ring groove; 10. Fiber sleeve. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-4 This utility model provides a technical solution:

[0026] Example:

[0027] like Figures 1-4 As shown, an anchor bolt drive assembly includes a drive nut 1, a first limiting member 2, and a second limiting member 3. The first limiting member 2, the drive nut 1, and the second limiting member 3 are coaxially arranged on the outside of the anchor bolt 4. The first limiting member 2 is located near the pad 6. The first limiting member 2 is used to restrict the drive nut 1 from moving away from the second limiting member 3 when it rotates clockwise. When the drive nut 1 rotates clockwise, if the torque increases to a value greater than the yield limit of the first limiting member 2, the drive nut 1 will break through the first limiting member 2 and move away from the second limiting member 3.

[0028] The second limiting member 3 is used to restrict the drive nut 1 from moving away from the first limiting member 2 when it reverses.

[0029] like Figure 3 and Figure 4 As shown, the first limiting member 2 includes a sleeve 5, the two ends of which abut against the end face of the drive nut 1 and the pad 6 outside the anchor rod 4, respectively. It also includes a spherical washer 7 (in the shape of a frustum cone), which is disposed between the pad 6 and the sleeve 5. The end of the sleeve 5 away from the drive nut 1 has a tapered structure.

[0030] The spherical washer 7 and the sleeve 5 are made of plastic or low-strength metal (such as aluminum).

[0031] The second limiting member 3 includes a connecting part 8 (the connecting part 8 is a nut or a round sleeve), the connecting part 8 is provided with an internal thread, the connecting part 8 is threadedly connected to the anchor rod 4, and the size of the second limiting member 3 is smaller than the size of the driving nut 1.

[0032] The connecting part 8 is provided with a sealing ring groove 9 on the outside, and a sealing ring is provided in the sealing ring groove 9.

[0033] Among them, 1. The driving nut 1 is a hexagonal nut; 2. The driving nut 1 is driven by the fiber sleeve 10, one end of the fiber sleeve 10 has a hexagonal hole adapted to the driving nut 1, and the other end is connected to the drill bit, which drives the fiber sleeve 10 to rotate in both directions; 3. The sealing ring is used to seal the gap between the fiber sleeve 10 and the limiting part to prevent cooling water from leaking through the gap; 4. The outer diameter of the connecting part 8 is smaller than the outer diameter of the driving nut 1.

[0034] Working principle: When the fiber sleeve 10 reverses, since the size of the second limiting member 3 (the connecting part 8 is fixed to the anchor rod 4) is smaller than the hexagonal hole of the fiber sleeve 10, there is a gap between the fiber sleeve 10 and the second limiting member 3. The fiber sleeve 10 only drives the drive nut 1 to reverse. However, the drive nut 1 cannot move backward under the action of the second limiting member 3. Therefore, the drive nut 1 drives the anchor rod 4 to reverse synchronously. At this time, the reverse rotation of the anchor rod 4 can be used for operations such as drilling anchor holes.

[0035] When the fiber sleeve 10 rotates clockwise (opposite to the aforementioned direction of rotation), the drive nut 1 cannot move axially toward the pad 6 due to the obstruction of the first limiting member 2. At this time, the anchor rod 4 can rotate clockwise to perform operations such as stirring resin. After the aforementioned operation (stirring resin) is completed, the anchor rod 4 is fixed by the anchoring agent and its rotation is restricted, increasing the torque output of the fiber sleeve 10. When the torque exceeds the limit that the connecting part 8 can withstand, the drive nut 1 breaks the connecting part 8 and / or the spherical washer 7. At this time, since there is no limiting member 2, the drive nut 1 can move axially toward the pad 6, thereby pressing the pad 6 against the outside of the anchor hole to apply prestress.

[0036] This invention enables the anchor rod to rotate in both directions by setting a driving nut, a first limiting member, and a second limiting member. Simultaneously, the first and second limiting members restrict the axial displacement of the driving nut during rotation, allowing it to rotate only in the forward or reverse direction. This, in turn, drives the anchor rod to rotate in either direction. Furthermore, this invention can also verify the anchoring effect of the anchoring agent. If the anchoring effect is satisfactory, the anchor rod rotation is restricted, and the driving nut rotates relative to the anchor rod under the action of the fiber sleeve. If the anchoring effect is unsatisfactory, the driving nut, under the action of the fiber sleeve, drives the anchor rod to rotate synchronously.

[0037] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An anchor bolt drive assembly, characterized in that: It includes a drive nut, a first limiting member, and a second limiting member. The first limiting member, the drive nut, and the second limiting member are arranged in sequence. The first limiting member is used to restrict the drive nut from moving away from the second limiting member when it rotates forward. When the drive nut rotates forward, if the torque increases to a value greater than the yield limit of the first limiting member, the drive nut will break through the first limiting member and move away from the second limiting member. The second limiting member is used to restrict the drive nut from moving away from the first limiting member when it reverses.

2. The anchor bolt drive assembly according to claim 1, characterized in that: The first limiting member, the driving nut, and the second limiting member are coaxially arranged outside the anchor rod in sequence.

3. The anchor bolt drive assembly according to claim 2, characterized in that: The first limiting component includes a sleeve, the two ends of which abut against the end face of the drive nut and the pad outside the anchor rod, respectively.

4. The anchor bolt drive assembly according to claim 3, characterized in that: It also includes a spherical washer, which is disposed between the pad and the sleeve, and the end of the sleeve away from the drive nut has a tapered structure.

5. The anchor bolt drive assembly according to claim 4, characterized in that: The spherical washer and sleeve are made of a material with a strength less than that of the pad.

6. The anchor bolt drive assembly according to claim 5, characterized in that: The spherical gasket and sleeve are made of plastic.

7. The anchor bolt drive assembly according to claim 1, characterized in that: The second limiting member includes a connecting part with an internal thread, and the connecting part is threadedly connected to the anchor rod. The size of the second limiting member is smaller than the size of the driving nut.

8. The anchor bolt drive assembly according to claim 7, characterized in that: The connecting part is a nut or a round sleeve.

9. The anchor bolt drive assembly according to claim 8, characterized in that: The connecting part is provided with a sealing ring groove on the outside, and a sealing ring is provided inside the sealing ring groove.

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