Tough energy-absorbing anchor rod with hydrophobic and waterproof performance

Abstract

The invention relates to the technical field of anchor rods, in particular to a tough energy-absorbing anchor rod with hydrophobic and waterproof performance. The segmented bidirectional threads are arranged on the rod body; the hydrophobic coating is arranged on the outer wall of the rod body; the waterproof sleeve is fixedly arranged on the rod body in a sleeving manner; the protective sleeve is fixedly arranged on the waterproof sleeve in a sleeving manner; an energy absorption assembly; and a pre-tightening assembly. Compared with the prior art, the quincunx waterproof sleeve is arranged, erosion of water to the rod body is effectively blocked, so that it is ensured that the rod body is not rusted and not oxidized for a long time, the stable supporting capacity of the rod body is kept, the rod body can provide good toughness for stress in all directions through segmented bidirectional threads, and the rod body can be used for preventing the stress in all directions through application of ACF energy-absorbing biomimetic materials. By means of the structure, the anchor rod can rapidly absorb and disperse energy under the large deformation effect, when the movable rod extrudes the energy absorption layer to a certain degree, solvents in the glue storage shell are mixed to form a new strengthening structure, and the anchor rod is more suitable for complex geological activities.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rods, and in particular to a tough energy-absorbing anchor rod with hydrophobic and waterproof properties. Background Art

[0002] Anchor rods are a key equipment widely used in coal mine roadway support. By anchoring into the surrounding rock of the roadway to provide a stable support force, the roadway deformation and landslides are effectively prevented, ensuring the safety of mining operations. As the most widely used and most used equipment in the field of support, anchor rods face the challenge of significant large deformation under high ground pressure environment brought about by increasing mining depth. Such large deformations include soft rock, rock bursts, and gas outbursts. However, the elongation of existing anchor rods is low, and it is difficult to adapt to such large deformation characteristics of the roadway surrounding rock. Especially in coal seam roadways with impact hazards, the large amount of elastic energy released instantly by the impact ground pressure will cause the surrounding rock to deform violently. The initial deformation energy is huge, often exceeding the bearing range of the anchor rod, resulting in the failure of anchor rod support, which may lead to serious accidents such as roadway roof collapse and landslides.

[0003] After searching, the Chinese patent with publication number CN107939427B discloses an energy-absorbing and earthquake-resistant anchor rod, which belongs to the field of safety protection technology. The anchor rod includes an anchoring section straight rod, an energy-absorbing section curved rod body, a threaded section straight rod, a circular steel plate, a circular high-damping rubber, a metal tray, a pre-tightening nut and a stirring tooth. A number of square stirring teeth are mounted on the anchoring section straight rod at a certain interval. The tail of the threaded section straight rod is screwed with a pre-tightening nut and a metal tray. The pre-tightening nut presses the metal tray. The threaded section straight rod is mounted between the metal tray and the energy-absorbing section curved rod body with a number of pairs of circular steel plates and circular high-damping rubber. The anchor rod of the present invention can greatly improve the energy absorption and earthquake-resistant effects of the anchor rod, absorb and dissipate the deformation impact energy acting on the support system, effectively guide and control the release and conversion of energy, and achieve the purpose of suppressing the occurrence of dynamic disasters such as impact ground pressure or making the entire process of dynamic disasters safe and controllable.

[0004] The problem with the above-mentioned anchor rod is that, although the bent rod body of the energy-absorbing section exhibits a good energy-absorbing and buffering effect when dealing with deformation on a sinusoidal distribution plane, its torsional buffering capacity is significantly insufficient when facing deformation perpendicular to the plane, that is, except for forces in a specific direction, the deformation response of the rod body is not ideal, which may cause the structure to be subjected to forces in unexpected directions. The buffering effect is greatly reduced. In addition, once the rod body is deformed with the surrounding rock, its subsequent torsional resistance will be limited, and the overall strength of the anchor rod will also decrease, thereby affecting the effective support for the surrounding rock. In certain high-humidity environments, the rod body of the anchor rod is easily corroded, resulting in poor support of the anchor rod for the surrounding rock, affecting the overall reinforcement effect.

[0005] Therefore, the present application provides a tough energy-absorbing anchor rod with hydrophobic and waterproof properties to meet the needs of anchor rod waterproofing and enhancing the strength of the anchor rod after energy absorption deformation. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a tough energy-absorbing anchor rod with hydrophobic and waterproof properties to solve the problem that the anchor rod is not waterproof and its strength is weakened after energy absorption and deformation.

[0007] Based on the above purpose, the present invention provides a tough energy-absorbing anchor rod with hydrophobic and waterproof properties, comprising:

[0008] Rod body 1;

[0009] A segmented bidirectional thread 62, provided on the rod body 1;

[0010] A tray 2, screwed to one end of the rod body 1;

[0011] A locking nut 3, screwed to one end of the rod body 1 close to the tray 2;

[0012] A hydrophobic coating 4 is provided on the outer wall of the rod body 1;

[0013] A waterproof cover 41, fixedly mounted on the rod body 1;

[0014] A protective cover 42, fixedly mounted on the waterproof cover 41;

[0015] An energy absorbing component is arranged on the rod body 1;

[0016] The pre-tightening assembly is arranged on the rod body 1 .

[0017] Preferably, a waterproof gasket 43 is mounted on the rod body 1 at one end of the tray 2 away from the locking nut 3 .

[0018] Preferably, the waterproof cover 41 is configured to be in a plum blossom shape, and a rounded corner is provided at a position where the waterproof cover 41 contacts the rod body 1 .

[0019] Preferably, the protective cover 42 is provided with a plurality of injection holes 44 adapted to the waterproof cover 41 .

[0020] Preferably, the energy absorbing component comprises:

[0021] A movable rod 5, fixedly mounted on an end of the rod body 1 away from the tray 2;

[0022] A movable sleeve 51, sleeved on the movable rod 5;

[0023] The energy absorbing layer 52 is fixedly installed in the movable sleeve 51 and is slidably connected to the movable rod 5 .

[0024] Preferably, the energy absorbing layer 52 is made of ACF energy absorbing bionic material, the diameter of the movable rod 5 is smaller than the diameter of the rod body 1 , and the outer diameter of the movable sleeve 51 is equal to the outer diameter of the rod body 1 .

[0025] Preferably, a plurality of uniformly distributed glue storage shells 6 are embedded in the movable sleeve 51 , a partition 61 is provided in the glue storage shell 6 , and AB glue fillers are provided on both sides of the partition 61 .

[0026] Preferably, the AB glue is a liquid resin and an expansion curing agent respectively.

[0027] Preferably, the pre-tightening assembly comprises:

[0028] A pre-tightening head 7 is fixedly mounted on the end of the movable rod 5 away from the rod body 1, and a thread is arranged on the pre-tightening head 7. The pre-tightening head 7 is arranged in a truncated cone shape and has a smaller diameter at the end away from the movable rod 5;

[0029] The pre-tightening sleeve 71 is sleeved on an end of the pre-tightening head 7 away from the rod body 1 and is threadedly connected to the pre-tightening head 7 .

[0030] Preferably, a plurality of anchor points 72 are fixedly mounted on the outer wall of the pre-tightening sleeve 71 .

[0031] Beneficial effects of the present invention:

[0032] 1. This kind of tough energy-absorbing anchor with hydrophobic and waterproof properties effectively blocks the erosion of the rod body by moisture in the surrounding rock by setting a plum blossom-shaped waterproof cover and a protective cover. Even if the rod body is deformed by the deformation of the surrounding rock, the rounded corner setting of the waterproof cover can protect the waterproof material coated on the rod body from damage, thereby ensuring that the rod body will not rust or oxidize for a long time and maintain its stable supporting ability.

[0033] 2. This kind of tough energy-absorbing anchor with hydrophobic and waterproof properties has segmented bidirectional threads on the rod body, so that the rod body itself can provide good toughness to stress in all directions, thereby enhancing the adaptability of the anchor rod to the deformation stress of the surrounding rock. The coordination of the movable rod and the energy-absorbing layer, as well as the application of ACF energy-absorbing bionic materials, enable the anchor rod to quickly absorb and disperse energy when subjected to large deformation, thereby avoiding the anchor rod from breaking due to sudden stress. This design enables the anchor rod to adjust its own state more flexibly when subjected to surrounding rock deformation and maintain a stable support effect.

[0034] 3. This kind of tough energy-absorbing anchor with hydrophobic and waterproof properties has a gel storage shell. When the active rod squeezes the energy-absorbing layer to a certain extent, the A and B solvents in the gel storage shell are mixed to form a new reinforced structure, which further enhances the supporting capacity of the anchor after deformation. It not only improves the stability and adaptability of the anchor, but also greatly extends its service life. One deformation often does not cause the gel storage shell at all angles to break. Therefore, the anchor can respond to the deformation of the surrounding rock multiple times and achieve the effect of strengthening stability. This multiple response and strengthening stability ability makes the anchor more suitable for complex geological activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0038] Figure 3 It is a schematic diagram of the partial explosion structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the energy absorbing component of the present invention;

[0040] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0041] Figure 6 This is a schematic diagram of the structure of the rubber storage shell of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the preload head of the present invention;

[0043] Figure 8 This is a schematic diagram of the explosion structure of the present invention from a second viewing angle;

[0044] Fig. 9 This is a schematic diagram of the structure of the pre-tightening assembly of the present invention;

[0045] Fig.10 It is a schematic diagram of the rod structure of the present invention.

[0046] The markings in the figure are:

[0047] 1. Rod body; 2. Tray; 3. Locking nut; 4. Hydrophobic coating; 41. Waterproof cover; 42. Protective cover; 43. Waterproof gasket; 44. Injection hole; 5. Movable rod; 51. Movable cover; 52. Energy absorbing layer; 6. Rubber storage shell; 61. Partition; 62. Segmented bidirectional thread; 7. Pre-tightening head; 71. Pre-tightening sleeve; 72. Anchor point. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0049] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] like Figures 1 to 10 As shown, a tough energy-absorbing anchor rod with hydrophobic and waterproof properties comprises a rod body 1; a segmented bidirectional thread 62, arranged on the rod body 1; a tray 2, screwed on one end of the rod body 1; a locking nut 3, screwed on the end of the rod body 1 close to the tray 2; a hydrophobic coating 4, arranged on the outer wall of the rod body 1; a waterproof cover 41, fixedly sleeved on the rod body 1; a protective cover 42, fixedly sleeved on the waterproof cover 41; an energy-absorbing component, arranged on the rod body 1; a pre-tightening component, arranged on the rod body 1; a waterproof gasket 43 is sleeved on the end of the rod body 1 located at the tray 2 away from the locking nut 3; the waterproof cover 41 is arranged in a plum blossom shape, and the position where the waterproof cover 41 contacts the rod body 1 is provided with a rounded corner; the protective cover 42 is provided with a plurality of perfusion holes 44 adapted to the waterproof cover 41;

[0051] When in use, the rod body 1 is placed in the drilled anchor hole, the rod body 1 is fixed by the pre-tightening assembly, and then the rod body 1 is fixed to the surrounding rock by the tray 2 and the locking nut 3, and then grouting can be performed through the gap between the plum blossom-shaped waterproof sleeve 41 and the protective sleeve 42, and the mortar will fill the anchor hole along the plum blossom-shaped slideway and the injection hole 44, thereby fixing the rod body 1 and the surrounding rock to achieve the support and installation of the anchor rod. When moisture in the surrounding rock penetrates to the vicinity of the rod body 1, it will be blocked by the waterproof sleeve 41. After the rod body 1 is deformed with the energy-absorbing assembly, the waterproof sleeve 41 may be damaged due to deformation, but its rounded corner setting will protect the waterproof material coated on the rod body 1 intact, thereby protecting the rod body 1 itself from rust and oxidation, and can provide stable support for a long time. The segmented bidirectional thread 62 set on the rod body 1 can make the rod body 1 itself provide good toughness to stresses in all directions, ensure that the anchor rod can adapt to the deformation stress of the surrounding rock, enhance its stability in supporting the surrounding rock, and improve the safety of the system.

[0052] like Figures 4 to 6 As shown, the energy absorption component includes: a movable rod 5, fixedly mounted on the end of the rod body 1 away from the tray 2; a movable sleeve 51, sleeved on the movable rod 5; an energy absorption layer 52, fixedly mounted in the movable sleeve 51 and slidably connected with the movable rod 5; the energy absorption layer 52 is made of ACF energy absorption bionic material, the diameter of the movable rod 5 is smaller than the diameter of the rod body 1, and the outer diameter of the movable sleeve 51 is equal to the outer diameter of the rod body 1; a plurality of uniformly distributed glue storage shells 6 are embedded in the movable sleeve 51, and a partition 61 is provided in the glue storage shell 6, and AB glue fillers are provided on both sides of the partition 61; the AB glue fillers are liquid resin and expansion curing agent respectively;

[0053] When the rod body 1 is subjected to the deformation of the surrounding rock, the movable rod 5 first has a large friction with the energy absorbing layer 52, which can ensure that the stability of the anchor rod is maintained under a certain degree of force. When subjected to a large deformation, the rod body 1 and the movable sleeve 51 move relative to each other, and the movable rod 5 can squeeze the energy absorbing layer 52 around. The energy absorbing layer 52 is made of ACF energy absorbing bionic material and can absorb nearly 90% of the energy, thereby preventing the anchor rod from being broken due to sudden stress. While ensuring the supporting effect, the adaptability of the anchor rod to the deformation of the surrounding rock is improved. When the movable rod 5 squeezes the energy absorbing layer 52 to a certain extent, the energy absorbing layer 52 will be embedded in the The rubber storage shell 6 is crushed, and the A and B solvents in the rubber storage shell 6 are mixed, thereby forming a new reinforced structure, which enhances the supporting capacity of the anchor rod in the state after energy absorption and deformation, thereby enhancing the anti-disturbance ability to geological activities, enhancing the stability of support and improving its adaptability. After the liquid resin and the expansion curing agent are mixed, they can expand and fill the gaps caused by deformation, and enhance the structural strength after solidification. One deformation will not cause the rubber storage shell 6 to break at all angles. Therefore, the anchor rod can respond to the surrounding rock deformation for many times and achieve the effect of strengthening and stabilizing, which greatly improves the adaptability of the anchor rod to geological activities and the supporting life.

[0054] like Figure 7 and Fig. 9 As shown, the pre-tightening assembly includes: a pre-tightening head 7, which is fixedly mounted on the end of the movable rod 5 away from the rod body 1, and the pre-tightening head 7 is provided with a thread, and the pre-tightening head 7 is arranged in a truncated cone and has a smaller diameter at the end away from the movable rod 5; a pre-tightening sleeve 71, which is sleeved on the end of the pre-tightening head 7 away from the rod body 1 and is threadedly connected to the pre-tightening head 7; a plurality of anchor points 72 are fixedly mounted on the outer wall of the pre-tightening sleeve 71;

[0055] After the rod body 1 is placed in the drilled hole, the rod body 1 can be pressed inwardly and rotated. At this time, the pre-tightening head 7 rotates relative to the pre-tightening sleeve 71 and moves inward relative to it. The pre-tightening head 7 is in a truncated cone shape, so the pre-tightening sleeve 71 is gradually expanded to the surroundings with the rotation, so that the anchor point 72 on the pre-tightening sleeve 71 is tightly engaged in the hole, thereby realizing the pre-fixation of the rod body 1, making subsequent operations more convenient. By pressing inwardly and rotating, it is more suitable for operation in different working scenarios during anchor installation operations, and is convenient for staff to use.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0057] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tough energy-absorbing anchor rod with hydrophobic and waterproof properties, characterized in that: include: Rod body (1); A segmented bidirectional thread (62) is arranged on the rod body (1); A tray (2) is screwed to one end of the rod (1); A locking nut (3) is screwed onto one end of the rod (1) close to the tray (2); A hydrophobic coating (4) is arranged on the outer wall of the rod body (1); A waterproof sleeve (41) fixedly sleeved on the rod body (1); A protective cover (42) fixedly mounted on the waterproof cover (41); An energy absorbing component, arranged on the rod body (1); A pre-tightening assembly is arranged on the rod body (1).

2. A tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 1, characterized in that: A waterproof gasket (43) is sleeved on one end of the rod body (1) located on the tray (2) away from the locking nut (3).

3. The tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 1, characterized in that: The waterproof cover (41) is arranged in a plum blossom shape, and a rounded corner is arranged at a position where the waterproof cover (41) contacts the rod body (1).

4. The tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 3, characterized in that: The protective cover (42) is provided with a plurality of injection holes (44) which are matched with the waterproof cover (41).

5. The tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 1, characterized in that: The energy absorbing component comprises: A movable rod (5) is fixedly mounted on an end of the rod body (1) away from the tray (2); A movable sleeve (51) is sleeved on the movable rod (5); The energy absorbing layer (52) is fixedly mounted in the movable sleeve (51) and is slidably connected to the movable rod (5).

6. A tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 5, characterized in that: The energy absorbing layer (52) is made of ACF energy absorbing bionic material, the diameter of the movable rod (5) is smaller than the diameter of the rod body (1), and the outer diameter of the movable sleeve (51) is equal to the outer diameter of the rod body (1).

7. The tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 5, characterized in that: The movable sleeve (51) is embedded with a plurality of uniformly distributed glue storage shells (6), a partition (61) is arranged in the glue storage shell (6), and AB glue fillers are arranged on both sides of the partition (61).

8. The hydrophobic and waterproof tough energy-absorbing anchor rod according to claim 7, characterized in that: The AB glue fillers are liquid resin and expansion curing agent respectively.

9. The tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 5, characterized in that: The preload assembly comprises: A pre-tightening head (7) is fixedly mounted on the end of the movable rod (5) away from the rod body (1), and the pre-tightening head (7) is provided with a thread. The pre-tightening head (7) is arranged in a truncated cone shape and has a smaller diameter at the end away from the movable rod (5); A pre-tightening sleeve (71) is sleeved on an end of the pre-tightening head (7) away from the rod body (1) and is threadedly connected to the pre-tightening head (7).

10. A tough energy-absorbing anchor rod with hydrophobic and waterproof properties according to claim 9, characterized in that: A plurality of anchor points (72) are fixedly mounted on the outer wall of the pre-tightening sleeve (71).

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