Anchor rod anti-deformation device

Abstract

The present invention belongs to the technical field of anchor rods, and specifically relates to an anchor rod anti-deformation device, comprising an anchor rod, an anti-deformation assembly, and a free rod; the anti-deformation assembly comprises a connecting tube, a tooth tube, a first connecting rod, and a second connecting rod; the tooth tube is formed by surrounding at least two tooth racks, each tooth rack having a gap therebetween and a supporting spring; the tooth racks have teeth on their inner surfaces, tapered protrusions on their outer surfaces, and the connecting tube has an inner conical surface that cooperates with the tapered protrusions; an adjustment sleeve is threadedly connected to each end of the connecting tube, the tooth tube is located between the two adjustment sleeves, and the position of the tooth tube within the connecting tube can be changed by changing the position of the two adjustment sleeves. When the position of the tooth tube changes, the contact area between the teeth and the spherical protrusion can be changed by the cooperation between the tapered protrusion and the inner conical surface, thereby changing the resistance encountered by the spherical protrusion when cutting the teeth.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rods, and particularly relates to an anchor rod anti-deformation device. Background Art

[0002] An anchor is a rod system structure used for geotechnical engineering reinforcement. It is usually made of metal or other high-tensile-resistance materials. It is combined with the surrounding rock through mechanical devices or adhesive materials. It is mainly used for active reinforcement in projects such as tunnels, slopes, and dams. The function of the anchor is to transfer the tension from the pad to the anchor body, thereby restraining the deformation of the surrounding rock and increasing the confining pressure. It plays a key role in controlling the deformation of the surrounding rock.

[0003] Patent application number 202110612154.6 discloses an adaptive shear-resistant large deformation anchor rod. The large shear deformation section in the anchor rod is hinged to the free section and the anchoring section to convert shear force into axial force, improving the deformation and shear resistance. Constant resistance is provided by the teeth in the sleeve cut by steel balls. Although it mentions that the diameter and number of steel balls can be changed to achieve different resistances, in actual operation, it requires the replacement of steel balls of different diameters, and the position of the steel balls is not easy to fix during the filling process. Summary of the Invention

[0004] In response to the above technical problems, the present invention provides an anchor rod anti-deformation device, which can conveniently adjust the resistance and does not require the loading of steel balls.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An anchor rod anti-deformation device comprises an anchor rod, an anti-deformation assembly and a free rod; the anti-deformation assembly comprises a connecting tube, a toothed tube, a first connecting rod and a second connecting rod; the toothed tube is slidably arranged in the connecting tube, the toothed tube is formed by a combination of at least two toothed racks, each toothed rack being spaced apart and provided with a supporting spring; the inner surface of the toothed rack is provided with teeth, the outer surface of the toothed rack is provided with a conical protrusion, and the inner surface of the connecting tube is provided with an inner conical surface that cooperates with the conical protrusion; an adjustment sleeve is threadedly connected to both ends of the connecting tube, and the toothed tube is located between the two adjustment sleeves;

[0007] The first connecting rod is located in the toothed tube, one end of the first connecting rod is provided with a raised portion, and the raised portion is provided with a spherical protrusion that cooperates with the teeth; the other end of the first connecting rod is hinged to the free rod; one end of the second connecting rod is threadedly connected to the connecting tube, and the other end of the second connecting rod is hinged to the anchor rod;

[0008] The anti-deformation component also includes a resistance strip and a resistance plate; the resistance plate is plugged into the first connecting rod, and the two ends of the resistance plate extend through the gap between the racks; there are two resistance strips, and corresponding connecting grooves are respectively provided on both sides of the connecting pipe; a connecting protrusion is provided on the resistance strip, and the connecting protrusion extends into the connecting groove and contacts the resistance plate; the resistance strip and the connecting pipe are connected by bolts.

[0009] The raised portion is provided with two circles of spherical protrusions, there is a distance between the two circles of spherical protrusions, and each circle of spherical protrusions includes at least two spherical protrusions.

[0010] One end of the second connecting rod is provided with a limiting plate in contact with the connecting pipe.

[0011] The other end of the first connecting rod and the free rod, as well as the other end of the second connecting rod and the anchoring rod, are hinged via a ball joint assembly.

[0012] The ball joint assembly includes a connecting ball head and a ball-and-socket connecting rod; the ball-and-socket connecting rod is provided with a spherical groove; there are two ball-and-socket connecting rods, which are arranged opposite to each other, and the two spherical grooves form a ball socket that cooperates with the connecting ball head;

[0013] The other ends of the first connecting rod and the second connecting rod are respectively fixedly connected to the corresponding connecting ball heads; the free rod and the anchor rod are respectively threadedly connected to the corresponding ball-socket connecting rods.

[0014] The free rod and the anchor rod are respectively connected to the corresponding ball-and-socket connecting rods through tapered threads.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The locking tube is located between two adjustment sleeves. By changing the position of the two adjustment sleeves, the position of the locking tube within the connecting tube can be adjusted. When the locking tube's position is changed, the tapered protrusions cooperate with the inner conical surface to change the spacing between the racks and the contact area between the teeth and the spherical protrusions, thereby varying the resistance encountered by the spherical protrusions when cutting the teeth. Therefore, this device can achieve resistance adjustment simply by changing the position of the two adjustment sleeves, without having to replace steel balls of different diameters.

[0017] It is also equipped with resistance strips and resistance plates; additional resistance can be applied as needed. It is equipped with two circles of spherical protrusions. If one circle of spherical protrusions is damaged, the other circle can be used as a replacement, providing double insurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the anti-deformation component of the present invention;

[0020] Figure 3 yes Figure 2 a front view of the structure shown;

[0021] Figure 4 This is a schematic structural diagram of the toothed tube of the present invention;

[0022] Figure 5 is a structural schematic diagram of the first connecting rod of the present invention;

[0023] Figure 6 1 is a schematic structural diagram of the card rack of the present invention;

[0024] Figure 7 Schematic diagram of the internal structure of the connecting pipe of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the connecting pipe of the present invention;

[0026] Figure 9 is a cross-sectional view of the ball joint assembly of the present invention;

[0027] Among them: 1 is an anchor rod, 2 is an anti-deformation component, 20 is a connecting tube, 21 is a toothed tube, 2100 is a toothed rack, 22 is a first connecting rod, 23 is a second connecting rod, 24 is a support spring, 25 is a tooth, 26 is a conical protrusion, 27 is an inner cone surface, 28 is an adjustment sleeve, 29 is a protrusion, 290 is a spherical protrusion, 210 is a resistance strip, 211 is a resistance plate, 212 is a connecting groove, 213 is a connecting protrusion, 214 is a bolt, 215 is a limit plate, 3 is a free rod, 4 is a ball joint assembly, 40 is a connecting ball head, 41 is a ball and socket connecting rod, and 42 is a spherical groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-9 As shown, an anchor rod anti-deformation device includes an anchor rod 1, an anti-deformation assembly 2, and a free rod 3. The anti-deformation assembly 2 includes a connecting tube 20, a latching tooth tube 21, a first connecting rod 22, and a second connecting rod 23. The latching tooth tube 21 is slidably disposed within the connecting tube 20 and can move axially along the connecting tube 20.

[0030] The latching tube 21 is composed of at least two latching racks 2100, spaced apart and equipped with support springs 24. These support springs 24 ensure that the outer surfaces of each latching rack 2100 conform to the inner surface of the connecting tube 20. The inner surfaces of the latching racks 2100 are provided with teeth 25, and conical protrusions 26 are also provided on the outer surfaces of the latching racks 2100. The inner surface of the connecting tube 20 is provided with an inner tapered surface 27 that mates with the conical protrusions 26.

[0031] The first connecting rod 22 is located within the latch tube 21. One end of the first connecting rod 22 is provided with a raised portion 29, which is provided with a spherical protrusion 290 that engages with the teeth 25. The other end of the first connecting rod 22 is hingedly connected to the free rod 3. One end of the second connecting rod 23 is threadedly connected to the connecting tube 20, and the other end of the second connecting rod 23 is hingedly connected to the anchor rod 1.

[0032] Adjustment sleeves 28 are threadedly connected to both ends of the connecting tube 20, with the tooth tube 21 positioned between the two adjustment sleeves 28. By adjusting the positions of the two adjustment sleeves 28, the position of the tooth tube 21 within the connecting tube 20 can be altered. When the position of the tooth tube 21 is changed, the tapered protrusions 26 and the inner tapered surface 27 cooperate to adjust the spacing between the racks 2100 and the contact area between the teeth 25 and the spherical protrusions 290, thereby varying the resistance encountered by the spherical protrusions 290 when cutting the teeth 25.

[0033] For example, when the tooth tube 21 is located at the leftmost position within the connecting tube 20, the spacing between the tooth racks 2100 is at its maximum, i.e., the contact area between the teeth 25 and the spherical protrusion 290 is at its minimum. At this time, the resistance encountered by the spherical protrusion 290 when cutting the teeth 25 is also at its minimum.

[0034] Conversely, when the tooth tube 21 is located at the rightmost position within the connecting tube 20, the spacing between the tooth racks 2100 is at its smallest, i.e., the contact area between the teeth 25 and the spherical protrusion 290 is at its largest. At this time, the resistance encountered by the spherical protrusion 290 when cutting the teeth 25 is also at its largest.

[0035] Therefore, the device can change the resistance by simply changing the positions of the two adjustment sleeves 28 without having to replace steel balls of different diameters. The specific adjustment process is as follows:

[0036] To increase the resistance, first rotate the right adjustment ring to move it to the right, then rotate the left adjustment ring to move it to the right and move the latch tube 21 to the right. To decrease the resistance, first rotate the left adjustment ring in the opposite direction to move it to the left, then rotate the right adjustment ring in the opposite direction to move it to the left and move the latch tube 21 to the left.

[0037] Furthermore, when the resistance generated after the above adjustment is still not sufficient for actual use. The anti-deformation component 2 also includes a resistance strip 210 and a resistance plate 211. The resistance plate 211 is plugged into the first connecting rod 22, and the two ends of the resistance plate 211 extend through the gap between the racks 2100. There are two resistance strips 210, and corresponding connecting grooves 212 are respectively provided on both sides of the connecting tube 20; a connecting protrusion 213 is provided on the resistance strip 210, and the connecting protrusion 213 extends into the connecting groove 212 and contacts the resistance plate 211; the resistance strip 210 and the connecting tube 20 are fixedly connected by a bolt 214. That is, tightening the bolt 214 increases the pressure, which can make the connecting protrusion 213 press the resistance plate 211, thereby increasing the resistance when the first connecting rod 22 moves; conversely, loosening the bolt 214 reduces the pressure, thereby reducing the resistance when the first connecting rod 22 moves.

[0038] Furthermore, the raised portion 29 is provided with two circles of spherical protrusions 290, spaced apart from each other. Each circle of spherical protrusions 290 includes at least two spherical protrusions 290. During normal operation, when the first connecting rod 22 moves to the right, the right-side circle of spherical protrusions 290 cuts the teeth 25. However, if a special situation occurs and the right-side circle of spherical protrusions 290 is damaged, the other circle of spherical protrusions 290 cuts the teeth 25. This structure provides a double insurance policy to prevent failure.

[0039] Furthermore, a limit plate 215 in contact with the connecting pipe 20 is provided at one end of the second connecting rod 23; that is, when the second connecting rod 23 is threadedly connected to the connecting pipe 20 and tightened, the limit plate 215 contacts the end face of the connecting pipe 20, thereby limiting the further movement of the second connecting rod 23.

[0040] Furthermore, the other end of the first connecting rod 22 and the free rod 3 , as well as the other end of the second connecting rod 23 and the anchor rod 1 , are hinged via a ball joint assembly 4 .

[0041] The ball joint assembly 4 includes a connecting ball head 40 and a ball and socket connecting rod 41; the ball and socket connecting rod 41 is provided with a spherical groove 42; there are two ball and socket connecting rods 41, the two ball and socket connecting rods 41 are arranged opposite to each other, and the two spherical grooves 42 form a ball socket that cooperates with the connecting ball head 40.

[0042] The other ends of the first connecting rod 22 and the second connecting rod 23 are fixedly connected to the corresponding connecting ball heads 40 respectively; the free rod 3 and the anchor rod 1 are threadedly connected to the corresponding ball and socket connecting rods 41 respectively; and corresponding threaded holes are provided on the free rod 3 and the anchor rod 1.

[0043] During installation, first place the connecting ball head 40 in the spherical grooves 42 of the two ball-and-socket connecting rods 41 , and then connect one end of the two ball-and-socket connecting rods 41 to the corresponding threaded holes.

[0044] Furthermore, the free rod 3 and the anchor rod 1 are respectively connected to the corresponding ball-and-socket connecting rod 41 through tapered threads; that is, the ball-and-socket connecting rod 41 is provided with an external tapered thread, and the free rod 3 and the anchor rod 1 are provided with an internal tapered threaded hole.

[0045] Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. An anchor rod anti-deformation device, characterized in that: The invention comprises an anchor rod (1), an anti-deformation component (2) and a free rod (3); the anti-deformation component (2) comprises a connecting tube (20), a toothed tube (21), a first connecting rod (22) and a second connecting rod (23); the toothed tube (21) is slidably arranged in the connecting tube (20); the toothed tube (21) is formed by combining at least two toothed racks (2100); there is a gap between each toothed rack (2100) and a supporting spring (24); the inner surface of the toothed rack (2100) is provided with teeth (25); the outer surface of the toothed rack (2100) is provided with a conical protrusion (26); the inner surface of the connecting tube (20) is provided with an inner conical surface (27) that cooperates with the conical protrusion (26); both ends of the connecting tube (20) are threadedly connected to an adjusting sleeve (28), and the toothed tube (21) is located between the two adjusting sleeves (28); The first connecting rod (22) is located in the tooth tube (21), and one end of the first connecting rod (22) is provided with a protrusion (29), and the protrusion (29) is provided with a spherical protrusion (290) that cooperates with the tooth (25); the other end of the first connecting rod (22) is hinged to the free rod (3); one end of the second connecting rod (23) is threadedly connected to the connecting tube (20), and the other end of the second connecting rod (23) is hinged to the anchor rod (1); The anti-deformation component (2) further comprises a resistance strip (210) and a resistance plate (211); the resistance plate (211) is plugged into the first connecting rod (22), and both ends of the resistance plate (211) extend through the gap between the racks (2100); two resistance strips (210) are provided, and corresponding connection grooves (212) are respectively provided on both sides of the connecting pipe (20); a connection protrusion (213) is provided on the resistance strip (210), and the connection protrusion (213) extends into the connection groove (212) and contacts the resistance plate (211); the resistance strip (210) and the connecting pipe (20) are connected via bolts (214).

2. The anchor rod anti-deformation device according to claim 1, characterized in that: Two circles of spherical protrusions (290) are provided on the protruding portion (29), a distance exists between the two circles of spherical protrusions (290), and each circle of spherical protrusions (290) includes at least two spherical protrusions (290).

3. The anchor rod anti-deformation device according to claim 1, characterized in that: One end of the second connecting rod (23) is provided with a limiting plate (215) in contact with the connecting pipe (20).

4. The anchor rod anti-deformation device according to claim 1, characterized in that: The other end of the first connecting rod (22) and the free rod (3), as well as the other end of the second connecting rod (23) and the anchor rod (1), are both hinged via a ball joint assembly (4).

5. The anchor rod anti-deformation device according to claim 4, characterized in that: The ball joint assembly (4) includes a connecting ball head (40) and a ball-and-socket connecting rod (41); the ball-and-socket connecting rod (41) is provided with a spherical groove (42); two ball-and-socket connecting rods (41) are provided, and the two ball-and-socket connecting rods (41) are arranged opposite to each other, and the two spherical grooves (42) form a ball-and-socket that cooperates with the connecting ball head (40); The other ends of the first connecting rod (22) and the second connecting rod (23) are respectively fixedly connected to the corresponding connecting ball heads (40); and the free rod (3) and the anchor rod (1) are respectively threadedly connected to the corresponding ball-socket connecting rods (41).

6. The anchor rod anti-deformation device according to claim 5, characterized in that: The free rod (3) and the anchor rod (1) are respectively connected to the corresponding ball-and-socket connecting rods (41) via tapered threads.

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