CN204919547U - Outer anchor head steel strand wires protection device of anchor rope - Google Patents
Outer anchor head steel strand wires protection device of anchor rope Download PDFInfo
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- CN204919547U CN204919547U CN201520686301.4U CN201520686301U CN204919547U CN 204919547 U CN204919547 U CN 204919547U CN 201520686301 U CN201520686301 U CN 201520686301U CN 204919547 U CN204919547 U CN 204919547U
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- steel strand
- tank
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- anchor head
- oil
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Abstract
The utility model discloses an outer anchor head steel strand wires protection device of anchor rope, including steel strand wires, the billet of fixed steel strand wires and the ground tackle of fixed steel strand wires, steel strand wires are including steel strand wires that are located the rock mass and the outer anchor head steel strand wires that stretch out the ground tackle outside, outer anchor head steel strand wires cover all around are equipped with the cylindrical safety cover that the tip was provided with the flange, the flange passes through bolted connection on the billet, be provided with first blast pipe and first oil inlet on the safety cover roof, safety cover upper portion is provided with the make -up tank, be provided with the oil -out on the make -up tank diapire, the make -up tank is fixed in on the billet through the make -up tank support frame, be provided with second blast pipe and second oil inlet on the make -up tank roof, first oil inlet and oil -out pass through the indicator tube and link to each other. The utility model discloses simple and practical, high -efficient economy, can guarantee outer anchor head steel strand wires and invade in the oil body all the time to can let oil level in the tour personnel intuitive judgment safety cover.
Description
Technical field
The utility model relates to water conservancy and hydropower, road, bridge, geotechnical engineering consolidation process field, particularly refers to the outer anchor head steel strand protective device of a kind of anchor cable.
Background technology
Since the sixties in 20th century, Anchor Cable Technique introduced China, be widely used at many engineering fields, especially achieved notable results in water conservancy and hydropower.At present, anchor cable has become the important technology of the Hydraulic and Hydro-Power Engineering dam foundation, side slope, underground chamber support reinforcement.Anchor cable generally compiles Shu Ercheng side by side by high strength steel strand, is pushed in the ground drilling pipe completed in advance by manual type, then first carries out grouting bonding to its root and fixes, then carries out stretch-draw to apply buffer brake to being reinforced rock mass at domatic exposed junction.
The outer anchor head steel strand anti-corrosion protection of anchor cable is the showdown link of anchor cable construction.The anchor cable that current engineering uses is generally non-bonded anchorage cable, and such anchor cable is after stretch-draw completes, and general needs, according to the observation of initial stage and monitoring result, compensate stretch-draw to the anchor cable completing locking or loosen.Therefore, anchor cable all leave certain length outer anchor head steel strand (length is about tens centimeters) for compensate pulling or loosen.For the effect ensureing later stage anchorage cable stretching and loosen; outer anchor head steel strand must carry out waterproof and preservative treatment; current engineering allows outer anchor head steel strand invade in oil body by installing protecting cover of termination point additional, thus the waterproof parcel realized steel strand and anti-corrosion protection, as shown in Figure 1.But in view of mostly the outer anchor head of anchor cable is that engineering practice shows under sunlight exposure environment, there are the following problems to adopt the external anchor head steel strand of current protecting cover of termination point device to carry out protection:
1, protective device oil leakage phenomenon takes place frequently, and cannot ensure that its inside is full of by oil body all the time
The protective device that current anchor cable construction uses adopts flange connection to be fixed on billet by protective cover fuel tank, and stricti jurise says that it is not complete closed occupancy.Therefore; when anchor cable construction completes; protective device be fixed in domatic after; oil body can along the position such as flange gap (protective device and billet junction), concrete pier micro-cracks to casing outboard leak under Gravitative Loads; moreover every root steel strand of anchor cable are formed by 7 diameter 2.5mm steel wire spirals system of twisting, and there is certain space between steel wire; oil body just can, along twisted wire gap to the diffusion of anchor cable deep, cause oil leakage phenomenon to take place frequently.On the other hand, the outer anchor head of side slope anchor cable is in the external environment condition of solar exposure, high temperature for a long time, and oil body expanded by heating gasification in protective cover, increases protection internal mask pressure, and aggravation oil body seepage occurs.As time goes on, in protective cover, oil body will reduce gradually, and oil level reduces gradually, even there will be in protective cover without oil condition.This also illustrates from another angle, and in the short period in Practical Project just after protective cover installation, protective cover is full of completely by oil body, and it does not far reach the water-tight corrosion-proof protection requirement of external anchor head steel strand in engineering.
2, the personnel that make an inspection tour cannot oil level in intuitive judgment protective cover
After anchor cable construction completes, engineering staff needs regularly to make an inspection tour the practical operation situation of anchor cable.Because the protecting cover of termination point adopted at present is opaque steel pipe, making an inspection tour personnel by oil level in the current protective cover of naked eyes intuitive judgment, more cannot cannot judge whether outer anchor head steel strand invade in oil body completely.Therefore, adopt current end protecting very easily to cause outer anchor head steel strand water-tight corrosion-proof device chronic frustration, but not by Timeliness coverage.
3, outer anchor head steel strand do not obtain the protection of abundant water-tight corrosion-proof, and corrosion phenomenon takes place frequently, and cannot compensate stretch-draw and loosen, and reduce anchor cable application life
Because the outer anchor head steel strand of anchor cable are failed in moment intrusion oil body, under external agency (water, air) effect, outer anchor head steel strand just there will be corrosion phenomenon at short notice.Corrosion to be not only the minimizing of sectional area on the impact of steel strand, and the stress concentration phenomenon that formed of the etch pit that produces of corrosion will cause steel strand mechanical property (as: prestressing force) and has a strong impact on.The generation of corrosion phenomenon can cause the effective length of outer anchor head steel strand reduced simultaneously, the compensate pulling finally causing carrying out the later stage with loosen.If corrosion phenomenon is undiscovered for a long time, whole piece steel strand may be caused to lose efficacy, and then cause failure of cable, impact is reinforced the safety of thing.
Thus, a kind of simple and practical, high-efficiency and economic of research and development, can ensure that outer anchor head steel strand invade in oil body all the time, and can allow the anchor cable of oil level in tour personnel intuitive judgment protective cover outward anchor head steel strand protective device seem very necessary.
Summary of the invention
The purpose of this utility model will provide a kind of anchor cable outer anchor head steel strand protective device exactly, and it is simple and practical, high-efficiency and economic, can ensure that outer anchor head steel strand invade in oil body all the time, and can allow oil level in tour personnel intuitive judgment protective cover.
For achieving the above object, the outer anchor head steel strand protective device of a kind of anchor cable designed by the utility model, comprise steel strand, the billet of tension steel strand and the ground tackle of tension steel strand, steel strand comprise the steel strand being positioned at rock mass and the outer anchor head steel strand stretched out outside ground tackle, outer anchor head steel strand surrounding is arranged with the cylindrical protective cover that end is provided with flange, flange is bolted on billet, protective cover roof is provided with downtake pipe and the first oil-in, protective cover top is provided with make-up tank, make-up tank diapire is provided with oil-out, make-up tank is fixed on billet by make-up tank bracing frame, make-up tank roof is provided with second exhaust pipe and the second oil-in, first oil-in is connected by indicator tube with oil-out.
Preferably, second exhaust pipe is inverted U-shaped, and the internal diameter of second exhaust pipe is 10mm.
Further, the mouth of pipe of second exhaust pipe is equipped with stack nut cap, and stack nut cap being provided with three diameters is the steam vent of 1mm.
Further, be provided with rubber sheet gasket between flange and billet, the thickness of rubber sheet gasket is 3mm.
Further, the two bottom sides of make-up tank is symmetrically arranged with the connection otic placode in two strap bolt holes.
Further, make-up tank bracing frame comprises junction plate and gripper shoe vertically disposed with junction plate, and junction plate is bolted on billet, and gripper shoe is connected with make-up tank bolt by the bolt hole connecting otic placode.
Further, the thickness of junction plate and gripper shoe is 5mm.
Further, the internal diameter of indicator tube is 15mm.
Further, the mouth of pipe of downtake pipe and the second oil-in are all equipped with nut cap.
The utility model has the advantage of:
One, the outer anchor head steel strand protective device of this practical new anchor cable, solve in current anchor cable construction process preferably, because of protective device leakage of oil, cannot ensure that its inside is full of by oil body all the time, and the personnel of tour cannot oil level in intuitive judgment protective cover, outer anchor head steel strand are finally caused not obtain the protection of abundant water-tight corrosion-proof, corrosion phenomenon takes place frequently, and cannot compensate stretch-draw and loosen, and reduces the series of problems such as anchor cable application life;
They are two years old, this device is by the interlock effect of make-up tank, indicator tube and protective cover three, in time there is leakage of oil, oil level decline in protective cover, in make-up tank, oil body will carry out oil body supply to protective cover automatically by indicator tube under gravity, thus oil body riddles fuel tank all the time in guarantee protective cover, guarantee that steel strand invade all the time in oil body, the requirement of engineering external anchor head steel strand water-tight corrosion-proof protection can be met;
Its three, the utility model make an inspection tour personnel intuitively recognize oil level in protective device by indicator tube, and according to the observation result determine whether carry out the operation of artificial supplementation oil body;
Its four, the utility model can realize external anchor head steel strand water-tight corrosion-proof protection, can guarantee that steel strand mechanical property obtains fabulous protection (as: prestressing force).Therefore, engineering staff can according to anchor cable actual operating state, change of external conditions situation (as: prestressd anchor cable monitor value changes, rock mass generation is loosening), externally anchor head steel strand compensate stretch-draw and loosen at any time, can ensure that steel strand possess good operating characteristic for a long time, improve anchor cable application life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the outer anchor head steel strand protective device of traditional anchor cable;
Fig. 2 is the structural representation of the outer anchor head steel strand protective device of the utility model anchor cable;
Fig. 3 is the structural representation of protective cover;
Fig. 4 is the partial enlargement structural representation of Fig. 3;
Fig. 5 is the A-A sectional structure schematic diagram of Fig. 3;
Fig. 6 is the structural representation of make-up tank;
Fig. 7 is the B-B sectional structure schematic diagram of Fig. 6;
Fig. 8 is the C-C sectional structure schematic diagram of Fig. 6;
Fig. 9 is the structural representation that make-up tank supports;
Figure 10 is the D-D sectional structure schematic diagram of Fig. 9.
In figure: steel strand 1 (wherein, interior steel strand 1a; Outer anchor head steel strand 1b); Billet 2; Ground tackle 3; Flange 4; Protective cover 5; Downtake pipe 6; First oil-in 7; Make-up tank 8; Oil-out 9; Make-up tank bracing frame 10; Second exhaust pipe 11; Second oil-in 12; Indicator tube 13; Stack nut cap 14; Rubber sheet gasket 15; Bolt hole 16; Connect otic placode 17; Junction plate 18; Gripper shoe 19; Nut cap 20.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but this embodiment should not be construed restriction of the present utility model.
The outer anchor head steel strand protective device of a kind of anchor cable shown in figure, comprise steel strand 1, the billet 2 of tension steel strand and the ground tackle 3 of tension steel strand, steel strand comprise the steel strand 1a being positioned at rock mass and the outer anchor head steel strand 1b stretched out outside ground tackle 3, outer anchor head steel strand 1b surrounding is arranged with the cylindrical protective cover 5 that end is provided with flange 4, flange 4 is bolted on billet 2, protective cover 5 roof is provided with downtake pipe 6 and the first oil-in 7, protective cover 5 top is provided with make-up tank 8, make-up tank 8 diapire is provided with oil-out 9, make-up tank 8 is fixed on billet 2 by make-up tank bracing frame 10, make-up tank 8 roof is provided with second exhaust pipe 11 and the second oil-in 12, first oil-in 7 is connected by indicator tube 13 with oil-out 9.
Second exhaust pipe 11 is inverted U-shaped, and the internal diameter of second exhaust pipe 11 is 10mm.
The mouth of pipe of second exhaust pipe 11 is equipped with stack nut cap 14, and stack nut cap 14 being provided with three diameters is the steam vent of 1mm.
Be provided with rubber sheet gasket 15 between flange 4 and billet 2, the thickness of rubber sheet gasket 15 is 3mm.
The two bottom sides of make-up tank 8 is symmetrically arranged with the connection otic placode 17 in two strap bolt holes 16.
Make-up tank bracing frame 10 comprises junction plate 18 and gripper shoe 19 vertically disposed with junction plate 18, and junction plate 18 is bolted on billet 2, and gripper shoe 19 is connected with make-up tank 8 bolt by the bolt hole 16 connecting otic placode 17.
The thickness of junction plate 18 and gripper shoe 19 is 5mm.
The internal diameter of indicator tube 13 is 15mm.
The mouth of pipe and second oil-in 12 of downtake pipe 6 are all equipped with nut cap 20.
Installation steps of the present utility model are as follows:
1) equipment making and preservative treatment: according to actual anchor cable tonnage, makes the component of protective device of the present invention by Fig. 2 ~ 5, and the exposed parts brushing antifouling paint to component;
2) protective cover 5 is installed: when after anchor cable installation, four connecting bolts of protective cover 5 by flange 4 are connected with billet 2, be fixed in domatic, in the middle of protective cover 5 and billet 2, place rubber sheet gasket 15, to ensure the closure that both connect;
3) make-up tank is installed and supports 10: by bolt, junction plate 18 is connected with billet 2, complete the installation that make-up tank supports 10;
4) indicator tube 13 is installed: after make-up tank supports 10 installations, make-up tank 8 is placed in the centre of gripper shoe 19, according to the difference in height of the first oil-in 7 and oil-out 9, determine the length of indicator tube 13, the two ends of indicator tube 13 are connected respectively the first oil-in 7 and oil-out 9, and adopt larynx hoop to carry out fastening to two ends;
5) make-up tank 8 is fixed: when after indicator tube 13 installation, guarantees that each position is installed firm, and two by make-up tank 8 connect otic placode 17, are fixed in gripper shoe 19 by bolt by make-up tank 8;
6) artificial oiling: first oil body is injected protective cover 5 by the second oil-in 12; after protective cover 5 fills; nut cap 20 is covered carry out on downtake pipe 6 closely knit; continue oiling until make-up tank 8 is filled with; now nut stack nut cap 14 is installed to second exhaust pipe 11, nut cap 20 is installed to the second oil-in 12.
The content be not described in detail in this manual, belongs to the known prior art of those skilled in the art.
Claims (9)
1. the outer anchor head steel strand protective device of anchor cable, comprise steel strand (1), the ground tackle (3) of steel strand described in the billet (2) of steel strand described in stretch-draw and stretch-draw, described steel strand comprise the steel strand (1a) being positioned at rock mass and the outer anchor head steel strand (1b) of stretching out described ground tackle (3) outside, it is characterized in that: described outer anchor head steel strand (1b) surrounding is arranged with the cylindrical protective cover (5) that end is provided with flange (4), described flange (4) is bolted on described billet (2), described protective cover (5) roof is provided with downtake pipe (6) and the first oil-in (7), described protective cover (5) top is provided with make-up tank (8), described make-up tank (8) diapire is provided with oil-out (9), described make-up tank (8) is fixed on described billet (2) by make-up tank bracing frame (10), described make-up tank (8) roof is provided with second exhaust pipe (11) and the second oil-in (12), described first oil-in (7) is connected by indicator tube (13) with oil-out (9).
2. the outer anchor head steel strand protective device of anchor cable according to claim 1, it is characterized in that: described second exhaust pipe (11) is inverted U-shaped, the internal diameter of described second exhaust pipe (11) is 10mm.
3. the outer anchor head steel strand protective device of anchor cable according to claim 2; it is characterized in that: the mouth of pipe of second exhaust pipe (11) is equipped with stack nut cap (14), it is the steam vent of 1mm that described stack nut cap (14) is provided with three diameters.
4. the outer anchor head steel strand protective device of the anchor cable according to claim 1 or 2 or 3; it is characterized in that: be provided with rubber sheet gasket (15) between described flange (4) and described billet (2), the thickness of described rubber sheet gasket (15) is 3mm.
5. the outer anchor head steel strand protective device of anchor cable according to claim 4, is characterized in that: the two bottom sides of described make-up tank (8) is symmetrically arranged with the connection otic placode (17) of two strap bolt holes (16).
6. the outer anchor head steel strand protective device of anchor cable according to claim 5; it is characterized in that: described make-up tank bracing frame (10) comprise junction plate (18) and with described junction plate (18) vertically disposed gripper shoe (19); described junction plate (18) is bolted on described billet (2), and described gripper shoe (19) is connected with make-up tank (8) bolt by the bolt hole (16) connecting otic placode (17).
7. the outer anchor head steel strand protective device of anchor cable according to claim 6, is characterized in that: the thickness of described junction plate (18) and gripper shoe (19) is 5mm.
8. the outer anchor head steel strand protective device of anchor cable according to claim 7, is characterized in that: the internal diameter of described indicator tube (13) is 15mm.
9. the outer anchor head steel strand protective device of anchor cable according to claim 8, is characterized in that: the mouth of pipe and described second oil-in (12) of described downtake pipe (6) are all equipped with nut cap (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686301.4U CN204919547U (en) | 2015-09-06 | 2015-09-06 | Outer anchor head steel strand wires protection device of anchor rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686301.4U CN204919547U (en) | 2015-09-06 | 2015-09-06 | Outer anchor head steel strand wires protection device of anchor rope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204919547U true CN204919547U (en) | 2015-12-30 |
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ID=54968691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686301.4U Withdrawn - After Issue CN204919547U (en) | 2015-09-06 | 2015-09-06 | Outer anchor head steel strand wires protection device of anchor rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204919547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089049A (en) * | 2015-09-06 | 2015-11-25 | 长江勘测规划设计研究有限责任公司 | Anchor cable outer anchor head steel strand protective device and installation method thereof |
-
2015
- 2015-09-06 CN CN201520686301.4U patent/CN204919547U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089049A (en) * | 2015-09-06 | 2015-11-25 | 长江勘测规划设计研究有限责任公司 | Anchor cable outer anchor head steel strand protective device and installation method thereof |
| CN105089049B (en) * | 2015-09-06 | 2017-05-10 | 长江勘测规划设计研究有限责任公司 | Anchor cable outer anchor head steel strand protective device and installation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20170510 |
|
| AV01 | Patent right actively abandoned |