Detachable anchor head protection device and anchor cable frame beam supporting structure

Abstract

The utility model discloses a detachable anchor head protection device which is arranged on an anchor cable exposed out of a lattice beam and an anchor head arranged on the exposed anchor cable in a penetrating mode and comprises an anchor sealing box, and the anchor sealing box is detachably installed on the surface of the lattice beam. One side of the anchor sealing box is open, a closed liquid storage space is formed by the anchor sealing box and the surface of the lattice beam, and the anchor cable and the anchor head are arranged in the liquid storage space; the anchor head is provided with an anchor cable stress meter, and the anchor cable stress meter is provided with a reading lead which can be led out of the anchor sealing box; the utility model further discloses an anchor cable frame beam supporting structure. According to the utility model, the exposed anchor cable and the anchor head are kept in a state of being completely immersed in an anti-corrosion substance, so that the waterproof and anti-corrosion protection effects are achieved; as a detachable structure, during disassembly, large vibration is not caused, the mechanical property of the anchor cable is not affected, the anchoring effect is not prone to being damaged, and supplementary tensioning operation and locking force inspection are convenient to carry out; enough length can be reserved for the exposed anchor cable according to actual needs, and later connection of the anchor cable and equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of slope support, and more specifically, to a detachable anchor head protection device and an anchor cable frame beam support structure. Background Art

[0002] As highways gradually extend into mountainous areas, slope damage is becoming increasingly prominent. Anchor cable frame beams are the most common form of slope support. Anchor cable frame beam support is a safe and effective slope support method. The composite structure of prestressed anchor cables and concrete frame beams fully utilizes the anchoring function of the anchor cables and frame beams. Prestressed anchor cables penetrate deep into the underlying rock mass through potential sliding bodies, actively utilizing the underlying rock mass to reinforce the slope and prevent soil sliding. The reinforcement of the surface rock and soil and water conservation primarily rely on shallow slope protection provided by frame beams. Frame beams not only curb the sliding of sliding bodies, but also allow for vegetation protection within the frame beam grids, conserving water and soil, increasing the project's greening rate, and restoring the original ecological environment. Anchor cable frame beams are suitable for the remediation of high and steep slopes with poor overall stability and surface slope protection that requires good protection, and have achieved excellent support results in actual projects.

[0003] During the construction of the anchor frame beam, after the anchor is locked, the excess exposed anchor is cut off using a machine, leaving a length of about 30mm. Finally, the exposed anchor and anchor head are sealed with plain concrete to prevent rust on the anchor end. As the slope's operating time increases, it is affected by the external and internal environment and the slope develops defects. At this time, the anchor needs to be re-tensioned and the locking force needs to be checked to reinforce the slope and investigate the main causes of the defects. The existing technology uses the method of directly knocking off the anchor concrete, which leads to stress loss in the anchor, affecting the anchoring effect, reducing the anchoring force of the anchor, and reducing the accuracy of the defect investigation and analysis. In the current solution, the reserved length of the exposed anchor is too short, which brings many inconveniences to the subsequent re-tensioning and monitoring. For example, it is difficult to connect the exposed anchor to the equipment, and it is difficult to re-tension and conduct locking force checks in the later stage. However, if the reserved length of the exposed anchor is too long, the cantilever end of the anchor concrete will be too long. Under the influence of the concrete's own weight, cracks will appear on the upper part of the fixed end of the concrete, affecting the anchoring effect. Utility Model Content

[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a detachable anchor head protection device and an anchor cable frame beam support structure, which are used to solve the problems that the anchor concrete is difficult to disassemble, the cantilever end is too long and prone to cracking, and the anchor cable is difficult to connect with the equipment.

[0005] The technical solution adopted by the utility model is a detachable anchor head protection device, which is arranged on the anchor cable exposed on the grid beam and the anchor head passed through the exposed anchor cable, and includes an anchor sealing box, which can be detachably installed on the surface of the grid beam; one side of the anchor sealing box is open, forming a closed liquid storage space with the grid beam surface, and the anchor cable and the anchor head are arranged in the liquid storage space; the anchor head is provided with an anchor cable stress gauge, and the anchor cable stress gauge is provided with a reading wire that can be led out of the anchor sealing box.

[0006] The liquid storage space is used to accommodate anti-corrosion substances. Preferably, the anti-corrosion substance is coal tar. As long as the liquid storage space is filled with anti-corrosion substances, it can ensure that the exposed anchor cables and anchor heads are completely immersed, so that they are fully protected against waterproofing and corrosion, thereby extending their service life. The closed liquid storage space isolates external impurities and reduces the contact between the anti-corrosion substances and the air, making it less likely for the anti-corrosion substances to deteriorate and become ineffective. The anchor cable stress gauge is used to measure the anchoring force and pulling force of the anchor cable. The anchor cable stress gauge is arranged in the anchor sealing box to avoid external interference; by connecting the reader to the reading wire, the reading of the anchor cable stress gauge can be obtained, so that the stress condition of the anchor cable can be understood at any time, which is convenient for engineering personnel to monitor.

[0007] Compared with traditional anchor sealing concrete, the detachable anchor head protection device in this technical solution can detect the anchor cable without destroying the original structure, and immersing it in anti-corrosion material does not affect the deformation of the anchor cable stress gauge; if anchor cable re-tensioning operations and locking force inspections are required, the detachable anchor head protection device is simpler to disassemble and assemble, and will not cause large vibrations during disassembly, will not affect the mechanical properties of the anchor cable, and will not easily damage the anchoring effect, greatly saving time, manpower and material resources, and reducing costs; the length of the exposed anchor cable can be reserved according to actual needs to facilitate the later connection of the anchor cable with the equipment.

[0008] Furthermore, a cable placement box and a wire outlet hole are provided on the surface of the sealing and anchoring box, and the reading wire passes through the wire outlet hole and is placed in the cable placement box.

[0009] The cable placement box is used to store the reading wires, and plays the role of fixing and protecting the reading wires, avoiding the reading wires from being exposed and causing damage, and at the same time making it convenient for engineering personnel to find the reading wires for connection during measurement.

[0010] Furthermore, the wire outlet hole is arranged on the top surface of the sealing and anchoring box and is close to the highest point of the sealing and anchoring box, and the cable placement box is arranged on the top surface of the sealing and anchoring box and covers the wire outlet hole.

[0011] The outlet hole is located on the top surface of the anchor seal box and near its highest point to minimize the leakage of anti-corrosion material from the outlet hole. The cable placement box shields the outlet hole, which can reduce the ingress of foreign matter into the liquid storage space of the anchor seal box through the outlet hole, thereby ensuring the stability of the internal state of the anchor seal box.

[0012] Furthermore, the cable placement box is a semi-enclosed structure with an opening tilted downward; the cable placement box is provided with a wire blocking fence near the opening.

[0013] The cable box is a semi-enclosed structure with an opening angled downward. This not only makes it easy for engineers to remove the reading wire from the box, but also blocks most dust and rain from entering the box. If water does enter the box, it will drain away by gravity, preventing the reading wire from being exposed to direct sunlight and rain, which may cause deterioration. The wire barrier prevents the reading wire from falling out of the cable box.

[0014] Furthermore, a liquid injection hole is provided at the top end of the sealing anchor box, and a liquid discharge hole is provided at the bottom end of the sealing anchor box.

[0015] The injection hole at the top and the discharge hole at the bottom can fill or empty the liquid storage space as much as possible. On the one hand, it is based on the requirements of waterproofing, anti-corrosion, protecting anchor cables and anchor heads, reducing the gaps in the liquid storage space, and ensuring that the exposed anchor cables and anchor heads are completely immersed; on the other hand, emptying the liquid storage space as much as possible can facilitate engineering personnel to disassemble the anchor box.

[0016] Furthermore, a liquid amount display window is provided on the surface of the anchor sealing box.

[0017] The liquid level display window allows engineering personnel to intuitively observe the liquid level of the anti-corrosion material in the anchor sealing box. When the liquid level drops, engineering personnel can promptly discover and replenish the anti-corrosion material to ensure that the exposed anchor cable and anchor head remain completely immersed in the anti-corrosion material, thereby ensuring waterproof and anti-corrosion effects and extending the service life of the anchor cable and anchor head.

[0018] Furthermore, the surface of the lattice beam is provided with a mounting groove that matches the opening shape of the anchor box, and the opening edge of the anchor box is provided with a mounting portion embedded in the mounting groove. The mounting portion is provided with a fixing hole and a bolt that passes through the fixing hole and is drilled into the lattice beam.

[0019] The mounting portion cooperates with the mounting groove to stably fix the anchor box on the surface of the lattice beam. The anchor box is fixed by the fixing hole and the bolt drilled into the lattice beam through the fixing hole. It is relatively simple to disassemble and has little impact on the original mechanical state.

[0020] Furthermore, a rubber gasket for sealing the anchor box is provided between the mounting groove and the mounting portion.

[0021] There may be a small gap between the mounting groove and the mounting portion, which may cause the anti-corrosion material to leak from the connection and accelerate the drop in the liquid level. By providing a deformable sealing anchor box rubber gasket that fits the mounting groove and the mounting portion, the gap can be filled and a better sealing effect can be achieved.

[0022] Furthermore, a portion of the bolt exposed from the lattice beam is covered with a rubber ring, and the rubber ring is used to protect the bolt.

[0023] The utility model also discloses an anchor cable frame beam support structure, comprising a lattice beam and an anchor head. The lattice beam is provided with a drilled hole, wherein a plurality of anchor cables are provided in the drilled hole, with one end of the anchor cables exposed on the surface of the lattice beam. The anchor head comprises a drilled plate and an anchor. The anchor cable frame beam support structure also includes the above-mentioned detachable anchor head protection device. The drilled plate, anchor cable strain gauge, and anchor are sequentially installed on the portion of the anchor cable exposed on the lattice beam, with the drilled plate in close contact with the surface of the lattice beam. The anchor cable frame beam support structure is stable, durable, has a good anchoring effect, and can achieve a good support effect.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The utility model can keep the exposed anchor cable and anchor head completely immersed in the anti-corrosion material, so that they are fully protected against water and corrosion, and their service life is extended; a liquid level display window is provided, through which the engineering personnel can visually observe the liquid level of the anti-corrosion material in the anchor sealing box, and when the liquid level drops, the engineering personnel can promptly discover and replenish the anti-corrosion material;

[0026] The structural design and installation of the anchor sealing box ensure the sealing of the liquid storage space, isolate external impurities and reduce the contact between the anti-corrosion material and the air, making the anti-corrosion material less likely to deteriorate and become ineffective;

[0027] The anchor cable stress gauge can measure the anchoring force and pull-out force of the anchor cable; the anchor cable stress gauge is set in the anchor sealing box to avoid external interference; by connecting the reading instrument to the reading wire, the reading of the anchor cable stress gauge can be obtained, so that the stress condition of the anchor cable can be understood at any time, which is convenient for engineering personnel to monitor;

[0028] Compared with traditional anchor sealing concrete, the detachable anchor head protection device can detect the anchor cable without destroying the original structure, and immersion in anti-corrosion material does not affect the deformation of the anchor cable stress gauge; if anchor cable re-tensioning operations and locking force inspections are required, the detachable anchor head protection device is simpler to disassemble and assemble, and will not cause large vibrations during disassembly, will not affect the mechanical properties of the anchor cable, and will not easily damage the anchoring effect, greatly saving time, manpower and material resources and reducing costs; sufficient length can also be reserved for the exposed anchor cable according to actual needs to facilitate the subsequent connection of the anchor cable with the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the present utility model.

[0030] Figure 2This is a structural diagram of the utility model from another perspective.

[0031] Figure 3 for Figure 1 Cross-sectional view of .

[0032] Figure 4 for Figure 3 A partial enlarged view of .

[0033] Description of the accompanying drawings: grid beam 100, drill hole 110, installation groove 120, anchor cable 200, anchor head 210, drilling pad 211, anchor 212, anchor cable stress gauge 220, reading wire 221, anchor box 300, liquid storage space 310, cable placement box 320, wire outlet hole 330, wire resistance fence 331, liquid injection hole 340, liquid discharge hole 350, liquid volume display window 360, anchor box rubber gasket 370, installation part 380, fixing hole 381, bolt 382. DETAILED DESCRIPTION

[0034] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0035] Example 1

[0036] like Figure 3 As shown, this embodiment is a detachable anchor head protection device, which is arranged on the anchor cable 200 exposed on the grid beam 100 and the anchor head 210 passed through the exposed anchor cable 200, including an anchor sealing box 300, which is detachably installed on the surface of the grid beam 100; one side of the anchor sealing box 300 is open, forming a closed liquid storage space 310 with the surface of the grid beam 100, and the anchor cable 200 and the anchor head 210 are arranged in the liquid storage space 310; the anchor head 210 is provided with an anchor cable stress gauge 220, and the anchor cable stress gauge 220 is provided with a reading wire 221 that can be led out of the anchor sealing box 300.

[0037] The liquid storage space 310 is used to contain coal tar. As long as the liquid storage space 310 is filled with coal tar, it can ensure that the exposed anchor cable 200 and anchor head 210 are completely immersed, so that they are fully protected from water and corrosion, and their service life is extended. The closed liquid storage space 310 isolates external impurities and reduces the contact between coal tar and air, making it difficult for coal tar to deteriorate and become ineffective. The anchor cable stress gauge 220 is used to measure the anchoring force and pulling force of the anchor cable 200. The anchor cable stress gauge 220 is set in the anchor sealing box 300 to avoid external interference. Immersion in coal tar does not affect the deformation of the anchor cable stress gauge 220; by connecting the reading instrument to the reading wire 221, the reading of the anchor cable stress gauge 220 can be obtained, and the stress condition of the anchor cable 200 can be understood at any time, which is convenient for engineering personnel to monitor.

[0038] like Figure 4 As shown, the surface of the anchor box 300 is provided with a cable placement box 320 and a wire outlet hole 330. The reading wire 221 passes through the wire outlet hole 330 and is placed in the cable placement box 320. The cable placement box 320 is used to store the reading wire 221, fix and protect the reading wire 221, prevent the reading wire 221 from being exposed and damaged, and facilitate engineers to find the reading wire 221 for connection during measurement.

[0039] The cable outlet hole 330 is located on the top surface of the anchor box 300, near its highest point. The cable placement box 320 is located on the top surface of the anchor box 300 and shields the cable outlet hole 330. The cable outlet hole 330 is located on the top surface of the anchor box 300, near its highest point, to minimize coal tar leakage from the cable outlet hole 330. The cable placement box 320 shields the cable outlet hole 330, reducing the ingress of foreign matter into the liquid storage space 310 of the anchor box 300 through the cable outlet hole 330, thereby ensuring the stability of the internal state of the anchor box 300.

[0040] The cable box 320 is a semi-enclosed rectangular box with one side open, the opening tilted downward. A wire barrier 331 is located near the opening. This semi-enclosed structure and downward-sloping opening facilitate access for engineers. It also blocks most dust and rainfall from entering the box. If water does enter, it drains away by gravity, preventing the reading wire 221 from being exposed to direct sunlight or soaked by rain, which can lead to deterioration. The wire barrier 331 prevents the reading wire from falling out of the box.

[0041] The anchor seal box 300 has an inlet 340 at its top and a drain 350 at its bottom. These inlet 340 and drain 350 allow the liquid reservoir 310 to be filled or drained as much as possible. This is done to minimize gaps in the liquid reservoir 310, ensuring complete immersion of exposed anchor cables 200 and anchor heads 210, while also ensuring that the liquid reservoir 310 is fully submerged. Furthermore, minimizing the liquid reservoir 310 allows for easier disassembly of the anchor seal box 300. The inlet and drain 340 and drain 350 are sealed with screws, which are padded with rubber gaskets to prevent oil leakage.

[0042] like Figure 1 As shown, the surface of the anchor sealing box 300 is provided with a liquid level display window 360. The liquid level display window 360 allows engineers to visually observe the liquid level of the coal tar in the anchor sealing box 300. When the liquid level drops, engineers can promptly detect and replenish the coal tar, ensuring that the exposed anchor cable 200 and anchor head 210 remain completely immersed in the coal tar, ensuring waterproof and anti-corrosion effects, and extending the service life of the anchor cable 200 and anchor head 210.

[0043] like Figure 2 and 4 As shown, the surface of the lattice beam 100 is provided with a mounting groove 120 that matches the opening shape of the anchor box 300. The opening edge of the anchor box 300 is provided with a mounting portion 380 that fits into the mounting groove 120. The mounting portion 380 has a fixing hole 381 and a bolt 382 drilled through the fixing hole 381 and into the lattice beam 100. The mounting portion 380 and the mounting groove 120 work together to stably secure the anchor box 300 to the surface of the lattice beam 100. The fixing hole 381 and the bolt 382 drilled through the fixing hole 381 and into the lattice beam 100 make disassembly simple and minimize the impact on the original mechanical state. The portion of the bolt 382 exposed from the lattice beam 100 is covered with a rubber ring to protect the bolt 382.

[0044] like Figure 4 As shown, a rubber anchor seal 370 is provided between the mounting groove 120 and the mounting portion 380. A small gap may exist between the mounting groove 120 and the mounting portion 380, which could cause the anti-corrosion material to leak from the joint and accelerate the drop in the liquid level. By providing a deformable rubber anchor seal 370 that conforms to the mounting groove 120 and the mounting portion 380, the gap can be filled, achieving a better sealing effect.

[0045] like Figure 1-4As shown, the anchor cable frame beam support structure includes a lattice beam 100 and an anchor head 210. The lattice beam 100 is provided with a drill hole 110, in which a plurality of anchor cables 200 are installed, with one end of the anchor cables 200 exposed on the surface of the lattice beam 100. The anchor head 210 includes a drilled plate 211 and an anchor 212. The anchor cable frame beam support structure also includes the aforementioned detachable anchor head protection device. The drilled plate 211, anchor cable strain gauge 220, and anchor 212 are sequentially installed on the portion of the anchor cables 200 exposed on the lattice beam 100, with the drilled plate 211 in close contact with the surface of the lattice beam 100. The drilled plate 211 is slightly larger than the drilled hole 110.

[0046] The construction process of the anchor cable frame beam support structure is as follows: drill holes inside the grid beam, place several anchor cables 200, install a drilling pad 211 slightly larger than the drilled hole 110, pass it through the anchor cables 200 and stick it to the qualified beam surface, and install the anchor cable stress gauge 220 and anchor 212 on it in sequence, complete the tensioning of the anchor cables 200 through the tensioning equipment, and cut off the excess exposed anchor cables 200;

[0047] Coating the exposed anchor cable 200, anchor 212, and anchor cable stress gauge 220 with coal tar (or other anti-corrosion substances), and wrapping them with cotton cloth soaked in coal tar (or other anti-corrosion substances);

[0048] Lead the reading wire 221 out through the outlet hole 330, seal the outlet hole 330 with sealant, place the led reading wire 221 in the cable placement box 320, and use the wire barrier 331 to prevent the reading wire 221 from slipping out of the box;

[0049] Use a grooving device to cut a mounting groove 120 slightly wider than the opening edge of the anchor box 300 on the grid beam, install the anchor box rubber gasket 370 into the mounting groove 120, and finally install the mounting portion 380 to the grid beam. Use bolts 382 and fixing holes 381 to fix the anchor box 300 on the grid beam to ensure good sealing performance.

[0050] Inject coal tar (or other anti-corrosion material) into the anchor sealing box 300 through the injection hole 340 and observe the liquid level through the liquid level display window 360 to ensure that the coal tar (or other anti-corrosion material) covers the anchor cable 200;

[0051] Use a rubber ring to protect the exposed thread of the bolt 382 in the fixing hole 381, and use anti-rust paint and concrete to protect the anchor box 300 from rust;

[0052] The internal condition of the sealing and anchoring box 300 can be regularly observed through the liquid level display window 360 , and coal tar (or other anti-corrosion substances) can be added in time.

[0053] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A detachable anchor head protection device, arranged on the anchor cable exposed on the grid beam and the anchor head passing through the exposed anchor cable, characterized in that: It comprises an anchor sealing box which can be detachably mounted on the surface of the lattice beam; one side of the anchor sealing box is open to form a closed liquid storage space with the surface of the lattice beam, and the anchor cable and the anchor head are arranged in the liquid storage space; the anchor head is provided with an anchor cable stress gauge, and the anchor cable stress gauge is provided with a reading wire which can be led out of the anchor sealing box.

2. The detachable anchor head protection device according to claim 1, characterized in that: A cable placement box and a wire outlet hole are provided on the surface of the sealing and anchoring box, and the reading wire passes through the wire outlet hole and is placed in the cable placement box.

3. The detachable anchor head protection device according to claim 2, characterized in that: The wire outlet hole is arranged on the top surface of the sealing and anchoring box and is close to the highest point of the sealing and anchoring box, and the cable placement box is arranged on the top surface of the sealing and anchoring box and covers the wire outlet hole.

4. The detachable anchor head protection device according to claim 3, characterized in that: The cable placement box is a semi-enclosed structure with an opening inclined downward; the cable placement box is provided with a wire blocking fence near the opening.

5. The detachable anchor head protection device according to claim 1, characterized in that: The top end of the sealing and anchoring box is provided with a liquid injection hole, and the bottom end of the sealing and anchoring box is provided with a liquid discharge hole.

6. The detachable anchor head protection device according to claim 5, characterized in that: A liquid amount display window is provided on the surface of the anchor sealing box.

7. The detachable anchor head protection device according to any one of claims 1 to 6, characterized in that: The surface of the lattice beam is provided with a mounting groove matching the opening shape of the anchor box, the opening edge of the anchor box is provided with a mounting portion embedded in the mounting groove, and the mounting portion is provided with a fixing hole and a bolt that passes through the fixing hole and is drilled into the lattice beam.

8. The detachable anchor head protection device according to claim 7, characterized in that: A sealing anchor box rubber gasket is provided between the mounting groove and the mounting portion.

9. The detachable anchor head protection device according to claim 7, characterized in that: The portion of the bolt exposed from the lattice beam is sleeved with a rubber ring.

10. An anchor cable frame beam support structure, comprising a lattice beam and an anchor head, wherein the lattice beam is provided with a drill hole, wherein a plurality of anchor cables are provided in the drill hole and one end of the anchor cable is exposed on the surface of the lattice beam, and wherein the anchor head comprises a drill hole pad and an anchor, ... The anchor frame beam support structure also includes the detachable anchor head protection device described in any one of claims 1 to 9, and the drilling pad, anchor stress gauge and anchor are sequentially inserted into the portion of the anchor exposed on the grid beam, and the drilling pad is in close contact with the surface of the grid beam.

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