Resistance nut set

Abstract

The utility model relates to the technical field of anchoring devices, in particular to a resistance nut set which comprises a driving nut and a retaining nut, the driving nut and the retaining nut are both arranged on a rod piece, a driving piece drives the rod piece to rotate forwards or backwards through the driving nut, and when the driving nut rotates forwards or backwards, the retaining nut is driven to rotate forwards or backwards. And the retaining nut limits the axial displacement of the driving nut relative to the rod piece. Forward and reverse rotation driving of the rod piece is achieved by arranging the resistance nut set, meanwhile, the axial displacement of the driving nut during forward and reverse rotation is limited through the single retaining nut, the driving nut can only rotate in the forward direction or the reverse direction, and then the rod piece is driven by the driving nut to rotate in the forward direction or the reverse direction.

Description

Technical Field

[0001] The utility model relates to the technical field of anchoring devices, and particularly relates to a group of resistance nuts. Background Art

[0002] Generally, a rod is rotated by mechanical auxiliary drive. For example, when an anchor rod is drilled, it is driven to drill by connecting the shank end with a rock drill or a drill. However, generally, the anchor rod is threadedly connected to the shank end or the anchor rod is driven by a nut through a socket. Therefore, the anchor rod can only be rotated unidirectionally. If it rotates in the reverse direction, there will be an axial displacement between the shank end and the anchor rod.

[0003] To solve this problem, in the prior art, such as the patent with the publication number of CN117404123A, it discloses a driving tooling for driving the forward and reverse rotation of the anchor rod. When rotating in the reverse direction, a bolt is arranged at the front end of the driving part for limiting to prevent the axial movement of the anchor rod (driving nut). In such a structure, when the driving tooling rotates, since the bolt protrudes from the driving tooling and rotates synchronously with the driving tooling, it is easy to interfere with other objects and cause injury; at the same time, when the driving nut needs to have an axial displacement forward (the drill bit / anchor head end is the front), the bolt needs to be manually removed, and the degree of automation is low. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a group of resistance nuts. By setting the group of resistance nuts, the forward and reverse rotation of the rod is realized, and at the same time, the axial displacement of the driving nut during forward and reverse rotation is limited by a single anti-loosening nut, so that the driving nut can only rotate forward or backward, and then the rod is driven to rotate forward or backward by the driving nut.

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

[0006] A group of resistance nuts includes a driving nut and an anti-loosening nut. Both the driving nut and the anti-loosening nut are arranged on the rod, and the driving part drives the rod to rotate forward or backward through the driving nut.

[0007] When the driving nut rotates forward or backward, the anti-loosening nut limits the axial displacement of the driving nut relative to the rod.

[0008] Further, when rotating in the reverse direction, the anti-loosening nut restricts the axial movement of the driving nut in the direction close to the anti-loosening nut;

[0009] When rotating in the forward direction, if the driving force for driving the rod to rotate by the driving nut is less than the maximum prestress, the anti-loosening nut restricts the axial movement of the driving nut in the direction away from the anti-loosening nut; if the driving force for driving the rod to rotate by the driving nut is greater than the maximum prestress, the driving nut breaks through the restriction of the anti-loosening nut and moves axially in the direction away from the anti-loosening nut.

[0010] Further, the driving nut is clamped with the anti-return nut, and the anti-return nut bears the pressure of the driving nut during reverse rotation; during forward rotation, the anti-return nut applies prestress to the driving nut, and the prestress is a tensile force.

[0011] Further, a first clamping portion is provided at one end of the driving nut close to the anti-return nut, a second clamping portion is provided at one end of the anti-return nut close to the driving nut, and the driving nut is clamped with the anti-return nut through the first clamping portion and the second clamping portion.

[0012] Further, the first clamping portion includes a first connecting ring and at least one first clamping tooth provided on the first connecting ring, and the first connecting ring is fixedly connected to the end of the driving nut;

[0013] The second clamping portion includes second clamping teeth provided at the end of the anti-return nut.

[0014] Further, the first clamping tooth includes a connecting section and a guiding section, and a clamping groove adapted to the second clamping tooth is formed between the guiding section, the connecting section and the first connecting ring, and a guiding inclined surface is provided on the guiding section.

[0015] Further, the second clamping tooth includes a second connecting ring and at least one tooth provided on the second connecting ring, the connecting ring is connected to the driving nut, and the tooth is provided in the prime number clamping groove.

[0016] Further, a gap is provided between the outer edge of the second clamping tooth and the bottom of the clamping groove.

[0017] Further, the driving nut is driven by a brazing sleeve, a non-circular driving hole is provided inside the brazing sleeve, the outside of the driving nut is adapted to the driving hole, and the outer dimension of the anti-return nut is smaller than the dimension of the driving hole.

[0018] Further, the driving hole is a regular hexagonal hole, both the driving nut and the anti-return nut are hexagonal nuts, and the diameter of the circumscribed circle of the anti-return nut is smaller than the diameter of the inscribed circle of the driving hole.

[0019] Further, the rod member is an anchor rod.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1) The present utility model realizes the forward and reverse rotation drive of the rod member by setting a resistance nut group, and at the same time limits the axial displacement of the driving nut during forward and reverse rotation through a single anti-return nut, so that the driving nut can only rotate forward or backward, and then drives the rod member to rotate forward or backward through the driving nut.

[0022] 2) By setting the resistance nut group, not only can the forward and reverse rotation of the rod be realized, but also the nut can move axially forward relative to the rod after the rod is fixed, realizing multiple functions of the anchor rod such as forward and reverse rotation and prestress application. The construction process does not require manual participation, greatly reducing the construction risk and significantly improving the construction efficiency. Description of the Drawings

[0023] Figure 1 It is a three-dimensional view of the resistance nut group when used in the embodiment of the present invention;

[0024] Figure 2 It is a front view of the resistance nut group when used;

[0025] Figure 3 It is Figure 2 the sectional view taken along the A-A direction in

[0026] Figure 4 It is Figure 3 the enlarged schematic view of the partial B in

[0027] Figure 5 It is an exploded schematic view of the resistance nut group when used;

[0028] Figure 6 It is a three-dimensional view of the resistance nut group;

[0029] In the figure, 1. driving nut; 2. anti-back-off nut; 3. rod; 4. first clamping part; 5. second clamping part; 6. first connecting ring; 7. first engaging tooth; 8. second engaging tooth; 9. connecting section; 10. guiding section; 11. second connecting ring; 12. tooth; 13. brazing sleeve; 14. driving hole; 15. clamping groove. Detailed Embodiment

[0030] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0031] Refer to Figures 1 - 6 and the present invention provides a technical solution: Embodiment

[0032] As Figures 1 - 6 shown, a resistance nut group includes a driving nut 1 and an anti-back-off nut 2. Both the driving nut 1 and the anti-back-off nut 2 are arranged on the rod 3, and the driving member drives the rod 3 to rotate forward or backward through the driving nut 1.

[0033] When the driving nut 1 rotates forward or backward, the anti-retrograde nut 2 restricts the axial displacement of the driving nut 1 relative to the rod 3.

[0034] In this embodiment, the resistance nut group is applied to drive the anchor rod to rotate forward and backward as an example. The driving nut 1 and the resistance nut are threadedly connected to the outside of the anchor rod, and one end of the driving nut 1 close to the drill bit / anchor head is arranged (in other words, the driving nut 1 is arranged between the drill bit / anchor head and the anti-retrograde nut 2). Of course, the resistance nut group in this solution can also be applied to the drive of other rods 3 with forward and reverse rotation requirements, which will not be listed one by one here.

[0035] Working principle: (1) Reverse drilling: The driving member (see the following shank sleeve 13 and rock drill) drives the driving nut 1 to rotate backward (counterclockwise). At this time, the driving nut 1 has a tendency to move away from the drill bit / anchor head relative to the anchor rod (a tendency to retreat, and vice versa is a tendency to advance. For the convenience of description, the following is simply referred to as advancing or retreating), and the anti-retrograde nut 2 arranged behind the driving nut 1 restricts the driving nut 1 from retreating, so that the driving nut 1 can only rotate in the reverse direction. When the driving nut 1 rotates in the reverse direction, it drives the anchor rod to rotate synchronously in the reverse direction. At this time, the anchor rod can be drilled.

[0036] (2) Extrude the resin cartridge in the anchor rod forward (specifically, refer to the extrusion type built-in cartridge anchor rod with the publication number CN116291648A) or break the resin cartridge in the anchor hole (the external resin anchor rod is well-known common sense in the art and will not be listed here): After the anchor hole is drilled in place, start the forward rotation operation. The purpose of the forward rotation is to extrude the resin cartridge in the anchor rod into the anchor hole and stir it or break and stir the resin cartridge in the anchor hole, and then preliminarily anchor the anchor rod through the anchoring agent (resin cartridge). The specific process is as follows:

[0037] The driving member drives the driving nut 1 to rotate forward. When rotating forward, the driving nut 1 has a tendency to move axially forward relative to the anchor rod, and the arranged anti-retrograde nut 2 restricts the driving nut 1 from advancing, so that the driving nut 1 can only rotate forward. When the driving nut 1 rotates forward, it drives the anchor rod to rotate synchronously forward. At this time, the forward rotation of the anchor rod realizes the extrusion / breaking and stirring of the anchoring agent.

[0038] The utility model realizes the forward and reverse rotation drive of the rod 3 by setting the resistance nut group, and at the same time restricts the axial displacement of the driving nut 1 during the forward and reverse rotation by a single anti-retrograde nut 2, so that the driving nut 1 can only rotate forward or backward, and then drives the rod 3 to rotate forward or backward through the driving nut 1.

[0039] Further, when rotating forward, the anti-retrograde nut 2 applies a prestress to the driving nut 1 to restrict the axial movement of the driving nut 1 away from the anti-retrograde nut 2;

[0040] When rotating backward, the anti-retrograde nut 2 restricts the axial movement of the driving nut 1 toward the anti-retrograde nut 2;

[0041] When rotating forward, if the driving force for the driving nut 1 to drive the rod member 3 to rotate is less than the maximum prestress, the anti-return nut 2 restricts the axial movement of the driving nut 1 away from the anti-return nut 2; if the driving force for the driving nut 1 to drive the rod member 3 to rotate is greater than the maximum prestress, the driving nut 1 breaks through the restriction of the anti-return nut 2 and axially moves away from the anti-return nut 2.

[0042] Continuing from the above, after the anchoring agent is extruded and stirred evenly, wait for a period of time (usually 10 min - 20 min) until the anchoring agent solidifies, and then drive the driving nut 1 to continue rotating forward through the driving member.

[0043] When continuing to rotate forward, since the anchor rod is anchored by the anchoring agent, the driving nut 1 cannot drive the anchor rod to rotate synchronously anymore. When the force applied to the driving nut 1 by the driving member is greater than the maximum prestress applied to the driving nut 1 by the anti-return nut 2, the driving nut 1 moves axially forward relative to the anchor rod. At this time, the driving nut 1 presses the backing plate against the anchor hole to apply the prestress of the anchor rod.

[0044] By setting the resistance nut group, not only can the forward and reverse rotation of the rod member 3 be realized, but also the driving nut 1 can move axially forward relative to the rod member 3 after the rod member 3 is fixed, realizing multiple functions such as the forward and reverse rotation of the anchor rod and the application of prestress. The construction process does not require manual participation, greatly reducing the construction risk and significantly improving the construction efficiency.

[0045] Furthermore, as Figures 4 - 6 shown, the driving nut 1 is snap-connected to the anti-return nut 2. When rotating in reverse, the anti-return nut 2 bears the pressure of the driving nut 1; when rotating forward, the anti-return nut 2 applies prestress to the driving nut 1, and the prestress is a tensile force.

[0046] One end of the driving nut 1 close to the anti-return nut 2 is provided with a first snap-connection portion 4, and one end of the anti-return nut 2 close to the driving nut 1 is provided with a second snap-connection portion 5. The driving nut 1 is snap-connected to the anti-return nut 2 through the first snap-connection portion 4 and the second snap-connection portion 5.

[0047] The first snap-connection portion 4 includes a first connecting ring 6 and at least one first engaging tooth 7 provided on the first connecting ring 6. The first connecting ring 6 is fixedly connected to the end of the driving nut 1;

[0048] The second snap-connection portion 5 includes a second engaging tooth 8 provided at the end of the anti-return nut 2.

[0049] The first engaging tooth 7 includes a connecting section 9 and a guiding section 10. A slot 15 adapted to the second engaging tooth 8 is formed between the guiding section 10, the connecting section 9 and the first connecting ring 6. The guiding section 10 is provided with a guiding inclined surface. Among them, the guiding inclined surface facilitates the second engaging tooth 8 to enter the slot 15.

[0050] The second ratchet 8 includes a second connecting ring 11 and at least one tooth 12 provided on the second connecting ring 11. The connecting ring is connected to the drive nut 1, and the tooth 12 is arranged in the prime number card slot 15.

[0051] (1) Installation: There are two installation methods for the resistance nut group and the anchor rod. Specifically: (1) Installation method 1: When the resistance nut group leaves the factory, the second ratchet 8 is snapped into the card slot 15. When it is needed, the nut group can be directly assembled with the rod member 3. (2) The nut groups are respectively installed on the rod member 3. The drive nut 1 is driven to reverse by the driving member. When reversing, since the drive nut 1 is not yet engaged with the anti-retreat nut 2, there is no limit of the anti-retreat nut 2, which is reflected as the drive nut 1 retreating. When the drive nut 1 retreats until the second ratchet 8 enters the card slot 15, the anti-retreat nut 2 limits the axial displacement of the drive nut 1 backward.

[0052] Among them, after the tooth 12 of the second ratchet 8 enters the card slot 15, when the drive nut 1 rotates, the card slot 15 rotates relative to the tooth 12.

[0053] (2) Limitation: (1) Reverse rotation limitation: The front end of the anti-retreat nut 2 abuts against the rear end of the drive nut 1 or the front end of the second ratchet 8 abuts against the groove wall of the card slot 15.

[0054] When the drive nut 1 reverses, the drive nut 1 is limited by the contact part between the anti-retreat nut 2 and the drive nut 1 or the contact part between the second ratchet 8 and the card slot 15.

[0055] (2) Forward rotation limitation: The rear side of the second ratchet 8 is in close contact with the groove wall of the card slot 15. When rotating forward, the tooth 12 of the second ratchet 8 hooks and pulls the guiding section 10 to limit the drive nut 1.

[0056] Furthermore, a gap is provided between the outer edge of the second ratchet 8 and the bottom of the card slot 15. The provided gap enables the card slot 15 not to contact the top surface of the tooth 12, thereby avoiding friction between the top surface of the tooth 12 and the card slot 15 when the drive nut 1 rotates.

[0057] Furthermore, the drive nut 1 is driven by a brazing sleeve 13. The inside of the brazing sleeve 13 is provided with a non-circular drive hole 14, and the outside of the drive nut 1 is adapted to the drive hole 14. The outer dimension of the anti-retreat nut 2 is smaller than the dimension of the drive hole 14. Such a setting is to prevent the brazing sleeve 13 from driving the anti-retreat nut 2 to rotate together with the drive nut 1 (when their dimensions are the same) or only driving the anti-retreat nut 2 to move (when the anti-retreat nut 2 is larger than the drive nut 1 in size).

[0058] Further, the driving hole 14 is a regular hexagonal hole (the driving hole 14 can also be an equilateral triangular hole, a square hole or other non-circular holes), the driving nut 1 and the anti-loosening nut 2 are both hexagonal nuts, and the diameter of the circumscribed circle of the anti-loosening nut 2 is smaller than the diameter of the inscribed circle of the driving hole 14.

[0059] The rod member 3 is an anchor rod.

[0060] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form 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 concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. A set of anti-backlash nuts, characterized in that: It includes a driving nut and a locking nut. Both the driving nut and the locking nut are arranged on the rod. The driving member drives the rod to rotate forward or backward through the driving nut. When the driving nut rotates forward or backward, the locking nut restricts the axial displacement of the driving nut relative to the rod.

2. The anti-resistance nut set according to claim 1, wherein: When rotating forward, the locking nut applies a prestress to the driving nut to restrict the axial movement of the driving nut away from the locking nut. When rotating backward, the locking nut restricts the axial movement of the driving nut towards the locking nut. When rotating forward, if the driving force for the driving nut to drive the rod to rotate is less than the maximum prestress, the locking nut restricts the axial movement of the driving nut away from the locking nut. If the driving force for the driving nut to drive the rod to rotate is greater than the maximum prestress, the driving nut breaks through the restriction of the locking nut and moves axially away from the locking nut.

3. The drag nut set according to claim 1, wherein: The driving nut is engaged with the locking nut. When rotating backward, the locking nut bears the pressure of the driving nut. When rotating forward, the locking nut applies a prestress to the driving nut, and the prestress is a tensile force.

4. The drag nut set according to claim 3, characterized in that: One end of the driving nut close to the locking nut is provided with a first engaging portion, and one end of the locking nut close to the driving nut is provided with a second engaging portion. The driving nut is engaged with the locking nut through the first engaging portion and the second engaging portion.

5. The drag nut set according to claim 4, characterized in that: The first engaging portion includes a first connecting ring and at least one first engaging tooth arranged on the first connecting ring. The first connecting ring is fixedly connected to the end of the driving nut. The second engaging portion includes second engaging teeth arranged at the end of the locking nut.

6. The drag nut set according to claim 5, wherein: The first engaging tooth includes a connecting section and a guiding section. A slot adapted to the second engaging tooth is formed among the guiding section, the connecting section and the first connecting ring. A guiding inclined surface is arranged on the guiding section.

7. The drag nut set according to claim 6, wherein: The second engaging tooth includes a second connecting ring and at least one tooth arranged on the second connecting ring. The connecting ring is connected to the driving nut, and the tooth is arranged in the prime number slot.

8. The drag nut set according to claim 6 or 7, characterized in that: A gap is arranged between the outer edge of the second engaging tooth and the bottom of the slot.

9. The drag nut set according to any one of claims 1-7, characterized in that: The driving nut is driven through a brazing sleeve. The inside of the brazing sleeve is provided with a non-circular driving hole. The outside of the driving nut is adapted to the driving hole. The external dimension of the locking nut is smaller than the dimension of the driving hole.

10. The drag nut set according to claim 9, characterized in that: The driving hole is a regular hexagonal hole. Both the driving nut and the locking nut are hexagonal nuts. The diameter of the circumcircle of the locking nut is smaller than the diameter of the inscribed circle of the driving hole.

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