LU501963B1 - A pressure friction recyclable anchor cable without anchor solid - Google Patents
A pressure friction recyclable anchor cable without anchor solid Download PDFInfo
- Publication number
- LU501963B1 LU501963B1 LU501963A LU501963A LU501963B1 LU 501963 B1 LU501963 B1 LU 501963B1 LU 501963 A LU501963 A LU 501963A LU 501963 A LU501963 A LU 501963A LU 501963 B1 LU501963 B1 LU 501963B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- anchor cable
- friction
- support
- shaped
- retractable pin
- Prior art date
Links
- 239000007787 solid Substances 0.000 title claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 18
- 239000002689 soil Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- 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
- E02D5/80—Ground anchors
- E02D5/808—Ground anchors anchored by using exclusively a bonding material
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a pressure friction recyclable anchor cable without anchor solid, which is clamped by a clamp.It is the same length as the fixture and is covered with a circular air bag.Several fan-shaped I-shaped supports (spliced into a whole circle) are set outside the airbag, and the I-shaped supports are connected with the tenon of the top support and the bottom support by a clamping groove.The top support and the bottom support are connected with the fixture.A retractable pin is arranged on the inner side of the tenon of the top support.The retractable pin is connected with the recovery rope.Friction pads are set outside each i-brace, which are in direct contact with the rock and soil around the borehole. When the anchor cable needs to be recovered, the retractable pin is pulled through the recovery rope, the retractable pin shrinks, the I-shaped support is unobstructed, the normal force of the friction pad is relieved, and the friction between the friction pad and rock and soil basically disappears.At this time, the anchor cable is pulled out and the whole set of equipment is completely recovered without any residue. The invention has clear principle, simple and reliable structure, convenient and fast use, complete recovery, repeated use, economy and environmental protection, and has broad application market and development prospect.
Description
Specification —=Æ— LU501963
A pressure friction recyclable anchor cable without anchor solid
The invention relates to the technical field of geotechnical engineering, in particular to a pressure friction recyclable anchor cable.
Background Technology
Anchor cable is widely used in geotechnical engineering, such as foundation pit engineering, slope engineering and so on.In the prior art, the anchor solid is formed by grouting in the borehole, so that the friction between the anchor solid and the anchor cable, the anchor solid and the rock and soil mass is generated, and the friction of the anchor section is used to resist the tension of the anchor cable. The existing technology mainly has the following problems: 1. The friction provided by the anchor body is small. Therefore, the length of the anchor cable on high and steep slopes often reaches 70-80 meters or even hundreds of meters, which is costly; 2. When other conditions are certain, the friction force is controlled by the friction force between the anchor and the anchor cable, and the friction force between the anchor and the rock and soil mass, which further increases the cost; 3. Due to the existence of anchor solid, the anchor cable cannot be recovered or the recovery rate 1s low.
To sum up, the existence of anchor is not only the key to the function of the existing technology, but also the root cause of its high cost, non environmental protection, difficult recycling and other problems.
The object of the invention is to provide a compression friction recyclable anchor cable without anchor solid. As we all know, when the friction coefficient 1
Specification —=Æ— LU501963 between two objects is constant, the greater the normal force on one object, the greater the friction between two objects. The invention is based on this simple mechanical principle to realize the compression friction recyclable anchor cable without anchor solid. In order to achieve the above purpose, the invention is implemented according to the following technical scheme:
The utility model relates to a pressure friction recyclable anchor cable without anchor solid, which is clamped firmly by a clamp.It is the same length as the fixture and is covered with a circular air bag.Several fan-shaped I-shaped supports (spliced into a whole circle) are set outside the airbag, and the I-shaped supports are connected with the tenon of the top support and the bottom support by a clamping groove. The top support and the bottom support are connected with the fixture. A retractable pin is arranged on the inner side of the tenon of the top support.The retractable pin is connected with the recovery rope. Friction pads are set outside each 1-brace, which are in direct contact with the rock and soil around the borehole.
Further, when the required friction force is large, it can be handled by increasing the axial length of the I-shaped support or connected by multiple sections of the device of the invention.
The working process and principle of the invention are:
After the drilling is completed, the invention is placed at the bottom of the drilling. The air nozzle passes through the perforation of the air nozzle and inflates the air bag through the inflation hole to expand the air bag. The expansion of the air bag gives a radial thrust to the I-shaped support to push the I-shaped support out and contact with the side wall of the drilling hole.At this time, continue to inflate, and the rock and soil mass on the side wall and the air bag squeeze the I-shaped support at the same time.Due to the certain compressibility of the friction pad, the I-shaped 2
Specification —— | U501963 support continues to move outward. When the telescopic pin slides out of the clamping slot, the telescopic end of the telescopic pin pops out of the fixed end due to the elastic force provided by the compressed spring, blocking the I-shaped support and keeping it in the existing state, that is, the state of applying greater normal force to the friction pad. At this time, the friction between the friction pad and the rock and soil mass (especially the hard and complete rock mass with negligible radial deformation of the borehole) is much greater than that between the anchor solid of the ordinary anchor cable and the rock and soil mass.
When the anchor cable needs to be recovered, the retractable pin is pulled through the recovery rope, the retractable pin shrinks, the I-shaped support is unobstructed, the normal force of the friction pad is relieved, and the friction between the friction pad and rock and soil basically disappears.At this time, the anchor cable is pulled out and the whole set of equipment is completely recovered without any residue. The whole set of equipment can be reused for many times, which is economical and environmental friendly.
Compared with the prior art, the beneficial effects of the invention are as follows: 1.The principle is clear, the structure is simple and reliable, and can be used repeatedly; 2.No anchor solid, easy recovery, complete recovery, economic and environmental protection; 3.No anchor solid, easy and fast operation, ready to use (traditional methods can be used only after the anchor solid has a certain strength), saving time; 4 No anchor, high friction and cost saving. 3
Specification —=Æ— LU501963
Therefore, the invention has a broad application market and a promising future.
Description of attached drawings
Fig. 1 is a structural diagram of one specific embodiment of the present invention;
Fig. 2 is a sectional intent of one specific embodiment of the present invention;
Fig. 3 1s a schematic diagram of a bracket of one specific embodiment of the present invention;
Fig. 4 is a schematic diagram of a scalable pin of one specific embodiment of the present invention.
In the figure: 1 Anchor cable;2. clamp;3. air bag;4. I-shaped support;5. friction pad;6. air nozzle;7. top support;8. bottom support:9. slot;10. mortise;11. retractable pin;12 recovery rope;13 spring;14. pin fixing end; 15. pin expansion end;16. filling air hole;17. air nozzle perforation.
Specific implementation mode
The invention is further described below in combination with the specific embodiment. Here, the schematic embodiment of the invention and the description are used to explain the invention, but are not used as a limitation of the invention.
As shown in Fig. 1, a friction free, pressure recoverable anchor cable of the present embodiment is clamped tightly by clamp 2.The length is equal to the clamp 2, and the outer sleeve is a circular air bag 3, and the air filling hole 16 is arranged on it. There are several fan shaped supports 4 (spliced into an entire circle) outside the airbag 3. The I-shaped supports 4 are connected by the groove 9 and the tenon of the top support 7 and the bottom support 8, and the top support 7 is provided with air nozzle perforation 17. The top support 7 and the bottom support 8 are connected with the clamp 2.On the inside of the tenon 8 of the top support 7, a 4
Specification —=Æ— LU501963 retractable pin 11 is provided.The retractable pin 11 is connected to the recovery rope 12.Each I-shaped support 4 is provided with friction pad 5 on the outside, and friction pad 5 is directly in contact with the rock and soil around the borehole.
After drilling, the invention is placed at the bottom of the borehole.The air nozzle 6 passes through the hole 17 of the air nozzle, and inflates the air bag 3 through the air filling hole 16 to make the air bag 3 expand.The expansion of airbag 3 gives the i-brace 4 a radial thrust, pushes the i-brace 4 out and contacts the side wall of the borehole.At this time, the side wall rock and soil mass and air bag 3 simultaneously squeeze the I-shaped brace 4.Because of the compressibility of friction pad 5, i-brace 4 moves continuously to the outside. When the expandable pin 11 slides out of the groove 9, the expansion end 15 of the expandable pin 11 pops out of the fixed end 14 due to the elastic force provided by the compressed spring 13, thus blocking the I-shaped support 4 to keep it in the existing state, that is, the state of applying a larger normal force to the friction pad 5.At this time, the friction between friction pad 4 and rock mass (especially the hard and complete rock mass which can be neglected by radial deformation of borehole) is much greater than that between the anchor solid of ordinary anchor cable and rock soil.
When the anchor cable 1 needs to be recovered, pull out the expandable pin 11 through the recovery rope 12, the expandable pin 11 shrinks, the I-shaped support 4 is unblocked, the normal force of friction pad 5 is relieved, and the friction between friction pad 5 and rock and soil is reduced. At this time, pull the anchor cable 1, and the whole equipment is completely recovered without any residue. The whole set of equipment can be reused for many times, and it is economical and environmental protection.
The technical scheme of the invention is not limited to the limitation of the
Specification —— | U501963 above specific embodiments.
Any technical deformation made according to the technical scheme of the invention falls within the protection scope of the invention.
6
Claims (7)
1.A pressure friction recyclable anchor cable without anchor solid, which is characterized in that the anchor cable is clamped firmly by a clamp.It is the same length as the fixture and is covered with a circular air bag;
2.The pressure friction type recyclable anchor cable according to claim 1, which is characterized in that a plurality of fan-shaped I-shaped supports (spliced into a whole circle) are arranged outside the air bag, and the I-shaped supports are connected with the tenon of the top support and the bottom support by a clamping groove;
3.The pressure friction type recyclable anchor cable according to claim 2, which is characterized in that both the top support and the bottom support are connected with the clamp. A retractable pin is arranged on the inner side of the tenon of the top support;
4 The pressure friction type recyclable anchor cable according to claim 3, which is characterized in that the retractable pin is connected with the recovery rope. A friction pad is set outside each I-shaped support, which is in direct contact with the rock and soil around the borehole;
5.The pressure friction type recyclable anchor cable according to claim 4, which is characterized in that the air nozzle passes through the air nozzle perforation and inflates the air bag through the air filling hole to expand the air bag. The expansion of the air bag gives a radial thrust to the I-shaped support, pushes the I-shaped support to extend outward, and drives the friction pad to contact with the side wall of the drilling hole;
6.The pressure friction type recyclable anchor cable according to claim 5, which 7
Claims LE LUSO1968 is characterized in that: continuously inflate, the I-shaped support continues to move to the outside until the telescopic pin slides out of the clamping groove, and the telescopic end of the telescopic pin pops out from the fixed end due to the elastic force provided by the compressed spring to block the I-shaped support and keep it in the existing state, that is, the state of applying greater normal force to the friction pad;
7. The pressure friction recyclable anchor cable according to claim 6, which is characterized in that when the anchor cable needs to be recovered, the retractable pin is pulled through the recovery rope, the retractable pin shrinks, the I-shaped support is unobstructed, the normal force of the friction pad is relieved, and the friction between the friction pad and rock and soil mass is reduced and basically disappears, at this time, the anchor cable is pulled out and the whole set of equipment is completely recovered without any residue. 8
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU501963A LU501963B1 (en) | 2022-04-28 | 2022-04-28 | A pressure friction recyclable anchor cable without anchor solid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU501963A LU501963B1 (en) | 2022-04-28 | 2022-04-28 | A pressure friction recyclable anchor cable without anchor solid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU501963B1 true LU501963B1 (en) | 2023-11-06 |
Family
ID=88651444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU501963A LU501963B1 (en) | 2022-04-28 | 2022-04-28 | A pressure friction recyclable anchor cable without anchor solid |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU501963B1 (en) |
-
2022
- 2022-04-28 LU LU501963A patent/LU501963B1/en active IP Right Grant
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20231106 |