CN110904960B - Mechanical recovery device of umbrella-shaped anchor and application method - Google Patents
Mechanical recovery device of umbrella-shaped anchor and application method Download PDFInfo
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- CN110904960B CN110904960B CN201911337283.8A CN201911337283A CN110904960B CN 110904960 B CN110904960 B CN 110904960B CN 201911337283 A CN201911337283 A CN 201911337283A CN 110904960 B CN110904960 B CN 110904960B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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- Piles And Underground Anchors (AREA)
Abstract
The invention provides a mechanical recovery device of an umbrella-shaped anchor and an application method, wherein the recovery device comprises an anchor head fixing device, a connecting rope and a top recovery device, the anchor head fixing device comprises a screw with a hole and pulleys fixed on two sides of an anchor head main rod of the umbrella-shaped anchor, one ends of two anchor plates are rotatably connected with the anchor head main rod, the top recovery device comprises a winch and a matched fixing support, and the winch is fixed on the matched fixing support; one end of the connecting rope is fixed on the anchor plate of the umbrella-shaped anchor by the screw with the hole, and the other end of the connecting rope is connected with the winch of the top recovery device upwards along the anchor rod after passing through the pulley fixed on the main rod of the anchor head. According to the invention, the connecting rope and the pulley are additionally arranged, the connecting rope is fixed on the anchor plate by using the screws with holes, and the anchor plate is kept in a folded state in the pulling process by using the traction of the winch, so that the soil resistance in the traction process is resisted, the effective recovery of the umbrella-shaped anchor is realized, and the whole recovery process is very simple, the construction speed is high, and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of rock and soil mass reinforcement, in particular to a mechanical recovery device of an umbrella-shaped anchor and an application method.
Background
The non-grouting anchoring method is an emergency reinforcing measure for geotechnical structures developed in recent years, mainly utilizes the self resistance of soil bodies to provide the anchoring force required by reinforcement, can play a role after construction is completed, and can effectively meet the emergency reinforcing requirements, such as a glass fiber reinforced plastic spiral anchor invented by Zhouyglian and the like, and a special impact umbrella type anchor invented by a use method (CN201110427770.0) of the glass fiber reinforced plastic spiral anchor, an Chenglian and the like, and an application method (ZL201510413982.1) of the invention. The umbrella-shaped anchor is an anchoring method proposed in recent years, and the umbrella-shaped anchor mainly utilizes the self resistance of the soil body to provide required anchoring force after an anchor head is expanded in the soil body.
After the anchoring devices are completed in the emergency service period, the anchor plate is already opened in the soil body, and the anchor head is pulled out through the drawing equipment, so that not only is a very large drawing force required, but also the structure of the anchoring facility is damaged, and the complete recovery and the repeated reutilization of the anchoring structure cannot be realized. Because metal materials and grouting materials in the anchoring structure are retained in the soil body and cannot be effectively recycled, the implementation of subsequent permanent reinforcement engineering is influenced on one hand, and on the other hand, underground space is occupied, underground garbage is formed, the pollution to the underground environment is caused, the waste of resources is also caused, and the economic benefit is poor.
Disclosure of Invention
Aiming at the defect that the existing umbrella-shaped anchor device cannot be effectively recycled after being used, the invention provides a mechanical recycling device for umbrella-shaped anchors, which has a simple structure, does not cause environmental pollution and can recycle resources, and an application method thereof. According to the invention, the connecting rope and the pulley are additionally arranged, the connecting rope is fixed on the anchor plate by using the screws with holes, and the anchor plate is pulled by using the winch, so that the anchor plate is kept in a folded state in the pulling process, the soil resistance in the pulling process is resisted, the effective recovery of the umbrella-shaped anchor is realized, the whole recovery process is very simple, the construction speed is high, the efficiency is high, the structural stability is good, and the construction safety is guaranteed.
The technical problem to be solved by the invention is realized by the following technical scheme:
a mechanical recovery device of an umbrella-shaped anchor comprises an anchor head fixing device, a connecting rope and a top recovery device, wherein the anchor head fixing device comprises a screw with a hole and pulleys fixed on two sides of an anchor head main rod of the umbrella-shaped anchor; one end of the connecting rope is fixed on the anchor plate of the umbrella-shaped anchor by the screw with the hole, and the other end of the connecting rope is connected with the winch of the top recovery device upwards along the anchor rod after passing through the pulley fixed on the main rod of the anchor head.
Further, in the process that the umbrella-shaped anchor enters the soil body, a winch applies pulling force to the connecting rope to enable the connecting rope to be tightened, and the anchor plate is in a folded state under the action of the pulling force of the connecting rope until the anchor head is driven into the soil layer to a preset depth; before the umbrella-shaped anchor is tensioned, the tension of the connecting rope is removed to enable the umbrella-shaped anchor to be in a loose state, and in the tensioning process, the anchor plate is separated from the anchor head main rod and is unfolded and penetrated into the soil body under the action of soil body resistance; in the umbrella-shaped anchor recovery process, the umbrella-shaped anchor rod is hit towards the hole depth direction, the anchor head moves forwards to drive the anchor plate to fold, tension is applied to the connecting rope, the anchor plate is kept in a folded state, and the anchor head is dragged out of the soil body to complete recovery.
Furthermore, the connecting rope is a flexible steel wire rope or a high-strength nylon rope with the diameter of 2.0-5.0mm, and the tensile strength is not less than 10 kN; the connecting rope goes around a pulley fixed on the main rod of the anchor head and with the diameter of 10mm, passes through the screw with the hole, and is fixed on the anchor plate after screwing the screw.
Furthermore, a screw rod of the screw with the hole is provided with a small hole for a connecting rope to pass through, and the screw with the hole is fixed on the anchor plate through threads.
Further, the pulley is welded with a protective plate on the sliding groove and used for restraining the connecting rope and ensuring that the connecting rope passes through the sliding groove.
An application method of the mechanical recovery device of the umbrella-shaped anchor comprises the following steps:
one end of a connecting rope is wound around a pulley and penetrates through a screw with a hole, the screw is tightened to enable one end of the connecting rope to be fixed on an anchor plate, and the other end of the connecting rope is connected with a winch;
secondly, before the anchor head is placed downwards, a tension not less than 2kN is applied to the connecting rope through a winch, so that the connecting rope is kept in a tight state, and the anchor plate is kept in a furled state;
thirdly, feeding or driving the anchor head and the anchor rod into the anchor hole, wherein the connecting rope is kept tight by controlling the winch to rotate in the process until the connecting rope exceeds the preset anchoring depth by more than 1.5 m;
step four, rotating the winch to enable the connecting rope to be in a loose state, erecting umbrella-shaped anchor tensioning equipment, and completing tensioning and locking of the umbrella-shaped anchor;
step five, when the umbrella-shaped anchor is recovered after use, taking down the locking device, erecting driving equipment, rotating a winch to enable a connecting rope to be in a loose state and to have a telescopic length of not less than 1.5m, opening the driving equipment, enabling the driving depth to be not more than 1.5m, and enabling an anchor head to move forwards to drive an anchor plate to fold;
and step six, rotating the winch to recover the connecting rope to a tight state, applying a tension not less than 5kN to the connecting rope through the winch to enable the anchor plate to be folded, dragging the anchor rod outwards by adopting manpower, keeping the connecting rope in the tight state in the dragging process until the anchor head is dragged out of the orifice, and completely recovering the umbrella-shaped anchor.
Compared with the prior art, the mechanical recovery method, the mechanical recovery device and the application method provided by the invention have the following improvements and advantages:
(1) the mechanical recovery method and the mechanical recovery device realize the complete recovery and the lossless recovery of the emergency anchoring technical product for the first time, thereby saving the underground space and avoiding the pollution to the underground environment;
(2) the mechanical recovery method and the device of the invention are attached to the original umbrella-shaped anchor structure, have small volume and simple and safe recovery process;
(3) the mechanical recovery method and the mechanical recovery device increase the repeated utilization rate of the anchoring product and have remarkable economic benefit.
Drawings
FIG. 1 is a schematic view of the mechanical retrieval device of the umbrella anchor according to one embodiment of the present invention;
FIG. 2(a) is a front view of a perforated screw in the mechanical retrieval device of the umbrella anchor of the present invention; FIG. 2(b) is a sectional view taken along line A-A in FIG. 2 (a);
FIG. 3(a) is a front view of the pulley in the mechanical retrieval device of the umbrella anchor of the present invention;
FIG. 3(B) is a sectional view taken along line B-B of FIG. 3 (a);
FIG. 4 is a schematic view of a mechanical retrieval device for an umbrella anchor of the present invention during retrieval of the umbrella anchor;
fig. 5 is a schematic view of the mechanical recovery device of the umbrella-shaped anchor in different states, fig. 5(a) is an anchoring working state, fig. 5(b) is a folding process of the anchor plate, and fig. 5(c) is a recovery state.
In the figure: 1-anchor head fixing device; 2-connecting ropes; 3-top recovery unit; 4-a screw with a hole; 5, a pulley; 6-driving in the head; 7, a pressure bearing disc; 8, a sliding connecting rod; 9-anchor head main rod; 10-anchor plate; 11-a support bar; 12-a winch; 13-a mating fixture; 14-a shield.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1-4, the embodiment of the present invention provides a mechanical retraction device for umbrella-type anchor, which comprises an anchor head fixing device 1, a connecting rope 2 and a top retraction device 3.
As shown in fig. 5(a) - (c), the application object of the invention is a driving-in umbrella-type anchor, which comprises an anchor head and an anchor head connected with the anchor head, wherein the anchor head comprises a driving-in head 6, a bearing disc 7, a sliding connecting rod 8, an anchor head main rod 9, anchor plates 10 and a support rod 11, the anchor head main rod 9 is connected with the driving-in head 6 through the sliding connecting rod 8, the bearing disc 7 is sleeved on the sliding connecting rod 8 and can slide up and down along the sliding connecting rod 8, one end of each of the two anchor plates 10 is rotatably connected with the anchor head main rod 9, the middle of each of the two anchor plates 10 is rotatably connected with one end of the support rod 11, the other end of the support rod 11 is rotatably connected with the bearing disc 7, the anchor head main rod 9 at the upper end of the anchor head is connected with an anchor rod, the anchor head and the anchor rod are driven by a driving-in device to the soil body when the anchor rod is upwards stretched, the anchor head 9, the sliding connecting rod 8 and the driving-in head 6 integrally upwards, the two anchor plates 10 are expanded towards the two sides of the anchor head main rod 9 under the action of the frictional resistance of the soil body and penetrate into the soil body, and the two anchor plates 10 push the supporting rod 11 to be expanded outwards while being expanded outwards so as to drive the pressure bearing disc 7 to slide downwards along the sliding connecting rod 8.
The anchor head fixing device 1 comprises a perforated screw 4 and a pulley 5, one end of the connecting rope 2 is fixed on an anchor plate 10 of the umbrella-shaped anchor through the perforated screw 4, and the other end of the connecting rope is upwards connected with the top recovery device 3 along the anchor rod after passing through the pulley 5 fixed on the anchor head main rod 9.
The top recovery device 3 comprises a winch 12 and a matched fixed support 13, and the winch 12 is fixed on the matched fixed support 13. During installation, one end of the connecting rope 2 penetrates through a small hole in a screw rod of the perforated screw 4 (as shown in fig. 2(a) and 2 (b)), then the perforated screw 4 is screwed down to enable one end of the connecting rope 2 to be fixed on the anchor plate 10, and the other end of the connecting rope 2 penetrates through the pulley 5 fixed on the anchor head main rod 9 and extends to the winch 12 in the hole along the anchor rod. By applying traction force to the connecting rope 2, the anchor plate 10 is driven to keep a folding state, and recovery is realized.
With further reference to fig. 4 and 5(a) - (c), in the initial state, under the action of the tension of the connecting rope 2, the two anchor plates 10 and the support rods 11 connected thereto are tightly attached to the two sides of the anchor head main rod 9 in a vertical state; in the installation process of the umbrella-shaped anchor, the connecting rope 2 is sent into or hit into the soil body along with the head of the umbrella-shaped anchor, and the connecting rope 2 keeps tight until the anchor head reaches the preset hole depth.
In the process of stretching the umbrella-shaped anchor, the tension of the connecting rope 2 is removed, the connecting rope is kept in a loose state, the anchor rod drives the anchor head to move outwards, the anchor head main rod 9 and the sliding connecting rod 8 integrally move upwards, the two anchor plates 10 are unfolded towards the two sides of the anchor head main rod 9 under the action of the frictional resistance of the soil body and penetrate into the soil body, the two anchor plates 10 push the supporting rod 11 to be outwards opened while being outwards opened, and then the bearing plate 7 is driven to slide downwards along the sliding connecting rod 8, and the anchor plates 10 extrude the soil body to obtain the anchoring force.
In the recovery process, the umbrella-shaped anchor head is driven into the soil body again by adopting driving equipment, and the stroke is not more than 1.5 meters. After the driving is finished, tension is applied to the free end of the connecting rope 2, the anchor plate 10 is folded under the driving action of the tension of the connecting rope 2, the anchor plate is pulled by the winch 12, and the anchor head and the anchor rod are pulled out together to finish the recovery of the umbrella-shaped anchor.
Preferably, the connecting rope 2 is a flexible steel wire rope or a high-strength nylon rope with the diameter of 2.0-5.0mm, and the tensile strength is not less than 10 kN; the connecting rope 2 is wound around a pulley 5 which is fixed on the anchor head main rod 9 and has the diameter of 10mm, passes through a screw with a hole, and is fixed on the anchor plate 10 after screwing the screw tightly.
The pulley 5 is welded with a protective plate 14 on the sliding chute to restrain the connecting rope 2 and ensure that the connecting rope 2 passes through the sliding chute.
The embodiment of the invention also provides an application method of the mechanical recovery device of the umbrella-shaped anchor, which comprises the following steps:
step one, one end of a connecting rope 2 is wound around a pulley 5 and penetrates through a screw 4 with a hole, the screw is tightened to enable one end of the connecting rope 2 to be fixed on an anchor plate 10, and the other end of the connecting rope 2 is connected with a winch 12;
secondly, before the anchor head is placed downwards, a tension not less than 2kN is applied to the connecting rope 2 through the winch 12, so that the connecting rope 2 is kept in a tight state, and the anchor plate 10 is kept in a furled state;
thirdly, feeding or driving the anchor head and the anchor rod into the anchor hole, wherein the connecting rope 2 is kept tight by controlling the winch 12 to rotate in the process until the connecting rope exceeds the preset anchoring depth by more than 1.5 m;
step four, rotating the winch 12 to enable the connecting rope 2 to be in a loose state, erecting umbrella-shaped anchor tensioning equipment, and completing tensioning and locking of the umbrella-shaped anchor;
step five, when the umbrella-shaped anchor is recovered after use, taking down the locking device, erecting driving equipment, rotating the winch 12 to enable the connecting rope 2 to be in a loose state and to have a telescopic length of not less than 1.5m, starting the driving equipment, driving the driving depth to be not more than 1.5m, and driving the anchor plate to fold by forward movement of the anchor head;
and step six, rotating the winch 12 to recover the connecting rope 2 to a tight state, applying a pulling force not less than 5kN to the connecting rope 2 through the winch 12 to fold the anchor plate 10, dragging the anchor rod outwards by adopting manpower, keeping the connecting rope 2 in the tight state in the dragging process until the anchor head is dragged out of the orifice, and finishing the recovery of the umbrella-shaped anchor.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A mechanical recovery device of an umbrella-shaped anchor comprises an anchor head fixing device (1), a connecting rope (2) and a top recovery device (3), wherein the anchor head fixing device (1) comprises a perforated screw (4) and pulleys (5) fixed on two sides of an anchor head main rod (9) of the umbrella-shaped anchor, one ends of two anchor plates (10) are rotatably connected with the anchor head main rod (9), the top recovery device (3) comprises a winch (12) and a matched fixing support (13), and the winch (12) is fixed on the matched fixing support (13); one end of the connecting rope (2) is fixed on an anchor plate (10) of the umbrella-shaped anchor by a screw (4) with a hole, and the other end of the connecting rope (2) is connected with a winch (12) of the top recovery device (3) upwards along the anchor rod after passing through a pulley (5) fixed on a main rod (9) of the anchor head; in the process that the umbrella-shaped anchor enters the soil body, a winch (12) applies pulling force to the connecting rope (2) to tighten the connecting rope, and the anchor plate (10) is in a folded state under the pulling force of the connecting rope (2) until the anchor head (6) is driven into the soil layer to a preset depth; before the umbrella-shaped anchor is tensioned, the tension of the connecting rope (2) is removed to enable the umbrella-shaped anchor to be in a loose state, and in the tensioning process, the anchor plate (10) is separated from the anchor head main rod (9), is unfolded under the action of soil resistance and is penetrated into the soil; in the umbrella-shaped anchor recovery process, the umbrella-shaped anchor rod is hit towards the hole depth direction, the anchor head moves forwards to drive the anchor plate (10) to be folded, tension is applied to the connecting rope (2), the anchor plate (10) is kept in a folded state, and the anchor head (6) is dragged out of the soil body to complete recovery.
2. The mechanical recovery device and method of use of claim 1, wherein: the connecting rope (2) is a flexible steel wire rope or a high-strength nylon rope with the diameter of 2.0-5.0mm, and the tensile strength is not less than 10 kN; the connecting rope (2) bypasses a pulley (5) which is fixed on the anchor head main rod (8) and has the diameter of 10mm, passes through the screw (4) with the hole, and is fixed on the anchor plate (10) after screwing the screw.
3. The mechanical recovery device and method of use of claim 2, wherein: the screw rod of the screw (4) with the hole is provided with a small hole for the connecting rope (2) to pass through, and the screw (4) with the hole is fixed on the anchor plate (10) through threads.
4. The mechanical recovery device and method of use of claim 1, wherein: the pulley (5) is welded with a protective plate on the sliding groove and used for restraining the connecting rope (2) and ensuring that the connecting rope (2) passes through the sliding groove.
5. A method of using the mechanical retrieval device of the umbrella-type anchor of any one of claims 1 to 4, comprising the steps of:
one end of a connecting rope (2) is wound around a pulley (5), and penetrates through a screw (4) with a hole, the screw is tightened to enable one end of the connecting rope (2) to be fixed on an anchor plate (10), and the other end of the connecting rope (2) is connected with a winch (12);
secondly, before the anchor head is placed downwards, a tension not less than 2kN is applied to the connecting rope (2) through the winch (12), so that the connecting rope (2) is kept in a tight state, and the anchor plate (10) is kept in a furled state;
thirdly, the anchor head and the anchor rod are sent into or hit into the anchor hole, and the connecting rope (2) is kept tight by controlling the winch (12) to rotate in the process until the preset anchoring depth is more than 1.5 m;
step four, rotating the winch (12) to enable the connecting rope (2) to be in a loose state, erecting umbrella-shaped anchor tensioning equipment, and completing tensioning and locking of the umbrella-shaped anchor;
step five, when the umbrella-shaped anchor is recovered after use, taking down the locking device, erecting driving equipment, rotating the winch (12) to enable the connecting rope (2) to be in a loose state and to have a telescopic length of not less than 1.5m, opening the driving equipment, enabling the driving depth to be not more than 1.5m, and enabling the anchor head to move forward to drive the anchor plate to be folded;
and sixthly, rotating the winch (12) to recover the connecting rope (2) to a tight state, applying a pulling force not less than 5kN to the connecting rope (2) through the winch (12) to fold the anchor plate (10), dragging the anchor rod outwards by using manpower, wherein in the dragging process, the connecting rope (2) keeps the tight state until the anchor head is dragged out of the orifice, and the umbrella-shaped anchor is completely recovered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911337283.8A CN110904960B (en) | 2019-12-23 | 2019-12-23 | Mechanical recovery device of umbrella-shaped anchor and application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911337283.8A CN110904960B (en) | 2019-12-23 | 2019-12-23 | Mechanical recovery device of umbrella-shaped anchor and application method |
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| CN110904960A CN110904960A (en) | 2020-03-24 |
| CN110904960B true CN110904960B (en) | 2021-07-23 |
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| CN112845423B (en) * | 2020-12-21 | 2022-11-22 | 中建三局绿色产业投资有限公司 | PE pipeline inner wall cleaning device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012866A (en) * | 2017-05-26 | 2017-08-04 | 镇江华源晋昌电器有限公司 | A kind of guy anchor easily reclaimed |
| CN211646380U (en) * | 2019-12-23 | 2020-10-09 | 长江水利委员会长江科学院 | Mechanical recovery device for umbrella-shaped anchor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012866A (en) * | 2017-05-26 | 2017-08-04 | 镇江华源晋昌电器有限公司 | A kind of guy anchor easily reclaimed |
| CN211646380U (en) * | 2019-12-23 | 2020-10-09 | 长江水利委员会长江科学院 | Mechanical recovery device for umbrella-shaped anchor |
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