Protective device for outer anchor head of anchor cable

Abstract

The utility model discloses a protective device for an outer anchor head of an anchor cable, which relates to the technical field of construction and comprises embedded bars embedded in concrete walls at the upper end and the lower end of the outer anchor head, the end parts of the embedded bars are in threaded connection with threaded sleeves, and the other ends, far away from the embedded bars, of the threaded sleeves are in threaded connection with pull rods. The end, away from the threaded sleeve, of the pull rod is sleeved with a protective steel plate, the pull rod at the end, away from the threaded sleeve, of the protective steel plate is in threaded connection with a nut, and concrete anchorage piers are poured on the outer side faces of the outer anchor head, the protective steel plate and the embedded ribs. According to the utility model, the protective steel plate is additionally arranged at the end part of the anchor cable, so that the anchor cable is released from force or is snapped and ejected when the anchor cable passes through the reinforced area or is constructed in the area, and the protective steel plate can prevent the anchor cable from being ejected, thereby effectively reducing or blocking the damage to personnel and mechanical equipment caused by the ejected anchor cable.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction technical field more particularly relates to a kind of anchor cable outer anchor head protection device. BACKGROUND

[0002] During slope construction, prestressed anchor cables are commonly used for slope reinforcement treatment. In particular, during the process of excavating a high slope from top to bottom step by step after the top of the slope is exposed, anchor cable support needs to be timely followed up to ensure the stability of the slope. For slightly broken rock mass, random block formation or water flow passing through the slope (such as water inlet, water inlet channel, tail water outlet and river protection in hydropower engineering), concrete panels need to be cast on the slope surface to improve the overall stability of slope support and the slope surface erosion resistance.

[0003] In the prior art, the anchor cable that is only sealed separately may be unloaded or broken due to the displacement or vibration of the slope after tensioning, and the anchor cable may shoot out to cause harm to the surrounding personnel and mechanical equipment, which has poor safety.

[0004] Therefore, it is necessary to provide an anchor cable outer anchor head protection device to solve the above problems. SUMMARY

[0005] The utility model aims at: solve the prior art in which anchor cable is only sealed separately, which may be unloaded or broken due to the displacement or vibration of the slope after tensioning, and the anchor cable may shoot out to cause harm to the surrounding personnel and mechanical equipment, which has poor safety.

[0006] The utility model discloses a technical scheme to achieve the above-mentioned purpose.

[0007] An anchor cable outer anchor head protection device includes a pre-embedded steel bar in a concrete wall at both ends of an outer anchor head, a threaded sleeve is threadedly connected to the end of the pre-embedded steel bar, a pull rod is threadedly connected to the other end of the threaded sleeve away from the pre-embedded steel bar, a protective steel plate is sleeved on the end of the pull rod away from the threaded sleeve, a nut is threadedly connected to the pull rod at the end of the protective steel plate away from the threaded sleeve, and a concrete anchor pier is cast on the outer side of the outer anchor head, the protective steel plate, and the pre-embedded steel bar.

[0008] Further, the outer anchor head includes an anchor plate and an anchor backing plate fixedly connected to one end of the anchor plate, the anchor backing plate is pre-embedded into the concrete wall, a PVC pipe parallel to the outer anchor head is pre-embedded into the concrete wall, a plurality of anchor cables are arranged in the PVC pipe, and the ends of the anchor cables are attached to the protective steel plate through the anchor plate.

[0009] Further, a spiral rib is arranged around the outer periphery of the anchor backing plate pre-embedded into the concrete wall.

[0010] Further, a plurality of steel bars are arranged in the concrete wall.

[0011] Furthermore, the end of the anchor cable extends 100mm beyond the anchor plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by adding a protective steel plate to the end of the anchor cable, can prevent the anchor cable from being ejected when passing through the reinforced area or during construction in the area, thus effectively reducing or preventing the injury caused by the ejected anchor cable to personnel and machinery.

[0014] 2. In this utility model, the tie rod and the pre-embedded rib are connected by a threaded sleeve, and the protective steel plate is fixed to the tie rod by a nut, which is convenient and quick. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present utility model.

[0016] Attached reference numerals: 1. Concrete wall; 2. Reinforcing bar; 3. Anchor plate; 4. Anchor plate; 5. PVC pipe; 6. Anchor cable; 7. Spiral reinforcement; 8. Embedded reinforcement; 9. Threaded sleeve; 10. Tie rod; 11. Protective steel plate; 12. Nut; 13. Concrete anchor block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 An anchor cable outer anchor head protection device includes four embedded reinforcing bars 8 pre-embedded in the concrete wall 1 at both ends of the outer anchor head. Two bars are shown in the figure, and the other two are covered by the embedded reinforcing bars 8 shown in the figure. The four embedded reinforcing bars 8 are pre-embedded around the concrete retaining wall anchor cable 6. Their bottoms are bent at 135° to increase the interaction force between them and the concrete wall 1. The ends of the embedded reinforcing bars 8 are threadedly connected to threaded sleeves 9. The other end of the threaded sleeves 9 away from the embedded reinforcing bars 8 is threadedly connected to a steel tie rod 10. The threaded sleeves 9 are located outside the concrete wall 1 to facilitate the installation of the tie rod 10. The end of the tie rod 10 away from the threaded sleeves 9 is fitted with a protective steel plate 11. The protective steel plate 11 has holes at its four corners for fitting onto the tie rod 10. Nuts 12 are threadedly connected to the tie rod 10 at the end of the protective steel plate 11 away from the threaded sleeves 9. The outer anchor head, the protective steel plate 11, and the outer surfaces of the embedded reinforcing bars 8 are completely covered by a concrete anchor block 13.

[0019] Specifically, the outer anchor head includes an anchor plate 4 and an anchor pad 3 fixedly connected to one end of the anchor plate 4. The anchor pad 3 is embedded in the concrete wall 1. A PVC pipe 5 parallel to the outer anchor head is embedded in the concrete wall 1. Multiple anchor cables 6 are installed in the PVC pipe 5. In this application, the number of anchor cables 6 is set to 12, and the corresponding anchor plate 4 is a 12-hole anchor plate 4. Each anchor cable 6 corresponds to one anchor plate 4. The end of the anchor cable 6 passes through the anchor plate 4 and is attached to the protective steel plate 11.

[0020] Specifically, the anchor plate 3 is embedded in the outer periphery of the concrete wall 1 and has spiral reinforcement 7.

[0021] Specifically, multiple steel bars 2 are installed in the concrete wall 1 to enhance the overall strength of the concrete wall 1.

[0022] Specifically, the end of the anchor cable 6 extends 100mm out of the anchor plate 4. By tightening the nut 12, the nut 12 presses against the protective steel plate 11 and fits against the end of the anchor cable 6.

[0023] The existing technology is relatively mature regarding how to install this device on the construction site, so this application will not describe it in detail. The difference from the existing technology is that the installation of the tie rod 10, the protective steel plate 11 and the nut 12 needs to be carried out before the concrete anchor pier 13 is poured.

[0024] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. The scope of patent protection of this utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model shall also be included within the scope of protection of this utility model.

Claims

1. An anchor cable external anchor head protection device, comprising pre-embedded reinforcing bars embedded in the concrete walls at both ends of the external anchor head, characterized in that: The end of the pre-embedded bar is threadedly connected to a threaded sleeve, and the other end of the threaded sleeve away from the pre-embedded bar is threadedly connected to a tie rod. The end of the tie rod away from the threaded sleeve is fitted with a protective steel plate, and the tie rod at the end of the protective steel plate away from the threaded sleeve is threadedly connected to a nut. The outer anchor head, the protective steel plate, and the outer surface of the pre-embedded bar are all cast with concrete anchor blocks.

2. The anchor cable external anchor head protection device according to claim 1, characterized in that: The outer anchor head includes an anchor plate and an anchor pad plate fixedly connected to one end of the anchor plate. The anchor pad plate is embedded in a concrete wall. A PVC pipe parallel to the outer anchor head is embedded in the concrete wall. Multiple anchor cables are installed in the PVC pipe. The ends of the anchor cables pass through the anchor plate and are attached to the protective steel plate.

3. The anchor cable external anchor head protection device according to claim 2, characterized in that: The anchor plate is embedded in the concrete wall and has spiral reinforcement on its outer periphery.

4. The anchor cable external anchor head protection device according to claim 1, characterized in that: The concrete wall contains multiple reinforcing bars.

5. The anchor cable external anchor head protection device according to claim 2, characterized in that: The end of the anchor cable extends 100mm beyond the anchor plate.

Images