Forward and reverse rotation driving fiber sleeve

Abstract

The utility model discloses a forward and reverse rotation driving fiber sleeve which comprises an outer connecting pipe used for being connected with a bit shank and a rod piece, when the bit shank rotates in the forward direction, the rod piece is driven to rotate through the outer connecting pipe, the forward and reverse rotation driving fiber sleeve further comprises a limiting inner piece, and the limiting inner piece is arranged in the outer connecting pipe. The limiting device is used for limiting relative rotation of the bit shank and the outer connecting pipe when the bit shank rotates reversely. The relative rotation of the bit shank and the outer connecting pipe can be limited by arranging the limiting inner piece when the bit shank rotates reversely, the purpose that the anchor rod is driven to rotate forwards and reversely by the same driving device and the same fiber sleeve is achieved, and the multi-working-condition construction requirements of different anchor rods can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of anchoring devices, and particularly relates to a positive and reverse drive sleeve. Background Art

[0002] Generally, a rod is rotated by mechanical auxiliary drive. For example, when a rock bolt is drilled, it is driven to drill by connecting the shank end to a rock drill or a drill. However, the shank end is generally threadedly connected to the rock drill / drill, so it can only drive the rock bolt to rotate in one direction. If it rotates in the reverse direction, there will be an axial displacement between the shank end and the rock drill / drill, and finally the two will separate.

[0003] Therefore, the existing rock bolt drive parts cannot realize the positive and reverse drive of the rock bolt and cannot meet the construction requirements of multiple working conditions. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a positive and reverse drive sleeve. By setting a limiting inner part, the relative rotation between the shank end and the outer connecting pipe can be restricted when the shank end rotates in the reverse direction, so as to realize the positive and reverse rotation of the rock bolt driven by the same driving device and the same sleeve, and meet the construction requirements of different rock bolts under multiple working conditions.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A positive and reverse drive sleeve includes an outer connecting pipe, which is used to connect with the shank end and the rod. When the shank end rotates forward, the rod is driven to rotate through the outer connecting pipe. It also includes a limiting inner part, which is arranged inside the outer connecting pipe and is used to restrict the relative rotation between the shank end and the outer connecting pipe when the shank end rotates in the reverse direction.

[0007] Further, the outer connecting pipe includes an installation cavity and a connecting cavity. The shank end is connected to the outer connecting pipe through the connecting cavity, and the limiting inner part is arranged in the installation cavity.

[0008] Further, a non-circular limiting hole is axially arranged at the end of the shank end;

[0009] The limiting inner part includes a first limiting part and a second limiting part. The first limiting part is arranged in the installation cavity. When the shank end rotates in the reverse direction, there is no relative rotation between the first limiting part and the installation cavity. The second limiting part is adapted to the limiting hole, and the second limiting part extends into the limiting hole.

[0010] Further, the cross-section of the installation cavity is a non-circular structure, and the first limiting part is adapted to the installation cavity.

[0011] Further, the cross-section of the installation cavity is circular, and the first limiting part is adapted to the installation cavity;

[0012] The outer connecting pipe is provided with a first threaded hole communicating with the installation cavity along the radial direction, the first limiting part is provided with a second threaded hole, and the first limiting part is connected to the outer connecting pipe through a bolt, the first threaded hole and the second threaded hole.

[0013] Furthermore, a water hole coaxial with the inner limiting member is provided on the inner limiting member.

[0014] Furthermore, the first end of the drill steel is threadedly connected to the outer connecting pipe through an external thread, and the cross-section of the second end of the drill steel is hexagonal.

[0015] Furthermore, a driving cavity is provided at one end of the outer connecting pipe away from the drill steel.

[0016] The beneficial effects of the present utility model are as follows:

[0017] By providing the inner limiting member, the present utility model can limit the relative rotation between the drill steel and the outer connecting pipe when the drill steel rotates reversely, thereby realizing the forward and reverse rotation of the anchor rod driven by the same driving device and the same sleeve, and meeting the multi-condition construction requirements of different anchor rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of the forward and reverse rotation driving sleeve in the embodiment of the present utility model;

[0019] Figure 2 It is a cross-sectional view of the forward and reverse rotation driving sleeve in Embodiment 1 of the present utility model;

[0020] Figure 3 It is a cross-sectional view of the forward and reverse rotation driving sleeve in Embodiment 2 of the present utility model;

[0021] In the figure, 1, outer connecting pipe; 2, drill steel; 3, rod; 4, inner limiting member; 5, first limiting part; 6, second limiting part; 7, limiting hole; 8, first threaded hole; 9, second threaded hole; 10, bolt; 11, water hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0023] Refer to Figures 1-3 , the present utility model provides a technical solution: Embodiment

[0024] As Figure 1 and Figure 2As shown in the figure, a forward and reverse drive fiber sleeve includes an outer connecting pipe 1, which is used to connect with a drill rod tail 2 and a rod 3. When the drill rod tail 2 rotates forward, the rod 3 is driven to rotate through the outer connecting pipe 1. It also includes a limiting inner part 4, which is arranged inside the outer connecting pipe 1 and is used to limit the relative rotation between the drill rod tail 2 and the outer connecting pipe 1 when the drill rod tail 2 rotates reversely.

[0025] Among them, the outer connecting pipe 1 is a fiber sleeve (such as the drive head in the patent with the publication number CN117404123A), and the outer connecting pipe 1 is threadedly connected to the drill rod tail 2.

[0026] Working principle: When the drill rod tail 2 rotates forward, the anchor rod is driven to rotate forward through the outer connecting pipe 1.

[0027] When the drill rod tail 2 rotates reversely, the drill rod tail 2 has a tendency to screw out of the outer connecting pipe 1. At this time, the limiting inner part 4 restricts the relative rotation between the drill rod tail 2 and the outer connecting pipe 1. Therefore, the drill rod tail 2 cannot screw out of the outer connecting pipe 1. At this time, the drill rod tail 2 can only drive the outer connecting pipe 1 and the anchor rod to rotate synchronously in the reverse direction.

[0028] The utility model can limit the relative rotation between the drill rod tail 2 and the outer connecting pipe 1 by setting the limiting inner part 4 when the drill rod tail 2 rotates reversely, thereby realizing the forward and reverse rotation of the anchor rod driven by the same driving device and the same fiber sleeve, and meeting the multi - working condition construction requirements of different anchor rods.

[0029] Furthermore, as Figure 2 shown, the outer connecting pipe 1 includes an installation cavity and a connection cavity. The drill rod tail 2 is (threadedly) connected to the outer connecting pipe 1 through the connection cavity, and the limiting inner part 4 is arranged in the installation cavity.

[0030] A non - circular limiting hole 7 is axially arranged at the end of the drill rod tail 2; among them, the limiting hole 7 is a triangular hole, a square hole, or a hexagonal hole. In this embodiment, the limiting hole 7 is a hexagonal hole.

[0031] The limiting inner part 4 includes a first limiting part 5 and a second limiting part 6. The first limiting part 5 is arranged in the installation cavity. When the drill rod tail 2 rotates reversely, there is no relative rotation between the first limiting part 5 and the installation cavity. The second limiting part 6 is adapted to the limiting hole 7, and the second limiting part 6 extends into the limiting hole 7.

[0032] The cross - section of the installation cavity is a non - circular structure (the non - circular structure is the same as the aforementioned limiting hole 7), and the first limiting part 5 is adapted to the installation cavity.

[0033] The limiting principle of the limiting inner part 4 is as follows: The right end of the limiting inner part 4 extends into the limiting hole 7 of the drill tail 2. When the limiting inner part 4 and the outer connecting pipe 1 cannot rotate relative to each other, since the limiting inner part 4 and the drill tail 2 are inserted and connected through the limiting hole 7, the limiting inner part 4 cannot rotate relative to the drill tail 2 either. Thus, when the drill tail 2 rotates in reverse, it drives the outer connecting pipe 1 and the anchor rod to rotate in reverse synchronously.

[0034] During installation, first thread-connect the outer connecting pipe 1 to the drill tail 2, and then insert the inner limiting part into the installation cavity of the outer connecting pipe 1 and extend it into the limiting hole 7. The left end of the first limiting part 5 is provided with an abutting cavity, and the anchor rod extends into the abutting cavity. The purpose of setting the abutting cavity is to ensure that the position of the limiting inner part 4 remains unchanged.

[0035] Furthermore, one end of the outer connecting pipe 1 away from the drill tail 2 is provided with a driving cavity, and the cross-section of the driving cavity is hexagonal. The outer connecting pipe 1 drives the anchor rod to rotate through the nut group on the anchor rod. The nut group (which includes a driving nut and a locking nut) is a prior art and will not be elaborated here. Embodiment

[0036] As Figure 3 shown, the difference between this embodiment and Embodiment 1 is that the cross-section of the installation cavity is circular, and the first limiting part 5 is adapted to the installation cavity; (here, adaptation means that the first limiting part 5 is a cylinder)

[0037] The outer connecting pipe 1 is provided with a first threaded hole 8 communicating with the installation cavity in the radial direction. The first limiting part 5 is provided with a second threaded hole 9. The first limiting part 5 is connected to the outer connecting pipe 1 through a bolt 10, the first threaded hole 8, and the second threaded hole 9.

[0038] The limiting inner part 4 is provided with a water hole 11 coaxial with it.

[0039] The first end of the drill tail 2 is thread-connected to the outer connecting pipe 1 through an external thread, and the cross-section of the second end of the drill tail 2 is hexagonal.

[0040] In this embodiment, the first limiting part 5 is connected to the outer connecting pipe 1 through a bolt 10 and threaded holes, thereby restricting the relative rotation between the first limiting part 5 and the outer connecting pipe 1.

[0041] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the concepts described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A forward and reverse drive sleeve, comprising an outer connecting pipe, the outer connecting pipe being used for connecting with a drill steel tail and a rod. When the drill steel tail rotates forward, the rod is driven to rotate through the outer connecting pipe, and it is characterized in that: It further includes a limiting inner part which is arranged inside the outer connecting pipe and is used for restricting the relative rotation between the drill rod shank and the outer connecting pipe when the drill rod shank rotates reversely; The outer connecting pipe includes an installation cavity and a connecting cavity. The drill rod shank is connected to the outer connecting pipe through the connecting cavity, and the limiting inner part is arranged in the installation cavity; A non-circular limiting hole is axially arranged at the end of the drill rod shank; The limiting inner part includes a first limiting part and a second limiting part. The first limiting part is arranged in the installation cavity. When the drill rod shank rotates reversely, no relative rotation occurs between the first limiting part and the installation cavity. The second limiting part is adapted to the limiting hole, and the second limiting part extends into the limiting hole.

2. The forward and reverse drive fiber sleeve according to claim 1, characterized in that: The cross section of the installation cavity is a non-circular structure, and the first limiting part is adapted to the installation cavity.

3. The forward and reverse drive fiber sleeve according to claim 1, characterized in that: The cross section of the installation cavity is circular, and the first limiting part is adapted to the installation cavity; The outer connecting pipe is provided with a first threaded hole communicating with the installation cavity in the radial direction. The first limiting part is provided with a second threaded hole. The first limiting part is connected to the outer connecting pipe through bolts, the first threaded hole and the second threaded hole.

4. The forward and reverse drive fiber sheath according to any one of claims 1-3, characterized in that: A water hole coaxial with the limiting inner part is arranged on the limiting inner part.

5. The forward and reverse drive fiber sleeve according to claim 1, characterized in that: The first end of the drill rod shank is threadedly connected to the outer connecting pipe through an external thread, and the cross section of the second end of the drill rod shank is hexagonal.

6. The forward and reverse drive fiber sleeve according to claim 5, wherein: A driving cavity is arranged at one end of the outer connecting pipe away from the drill rod shank.

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