CN208518692U - A kind of intumescent combination grouted anchor bar - Google Patents
A kind of intumescent combination grouted anchor bar Download PDFInfo
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- CN208518692U CN208518692U CN201821114907.0U CN201821114907U CN208518692U CN 208518692 U CN208518692 U CN 208518692U CN 201821114907 U CN201821114907 U CN 201821114907U CN 208518692 U CN208518692 U CN 208518692U
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- anchor
- anchor bar
- followed
- hangnail
- anchor pole
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Abstract
The utility model patent is related to a kind of intumescent combination grouted anchor bar, is made of anchor rod body, anchor rod pallet board, bolt expansion device, coupling for anchor bars.It the anchor pole Bower Anchor bar and is followed by anchor pole and is divided into inside and outside two layers, interior anchor bar body is fixed among outer anchor bar body, and Bower Anchor bar bottom end is provided with taper bit, is followed by anchor pole top and is provided with stop grouting plug, stop grouting plug top is fixedly connected with anchor rod pallet board by nut.The bolt expansion device mainly includes expansion tube, spring, composite expanding agent and hangnail steel body；The coupling for anchor bars includes connector sleeve, connecting rod, hangnail connection buckle, groove；During insertion, hangnail connection buckle can be stuck in groove anchor pole so that anchor pole more to advancing in soil, be followed by anchor pole connect with connector sleeve it is closer.The slip casting can realize that anchor pole contacts to the greatest extent with country rock hole wall, improve first anchor-hold of the grouted anchor bar at the initial stage of anchoring, and can convert rock-bolt length according to actual needs.
Description
Technical field
The utility model relates to a kind of intumescents to combine grouted anchor bar, belong to support anchor rod technical field.
Background technique
As the intensity and depth of Development of Underground Engineering increasingly increase, soft-rock tunnel, tunnel support, which become, restricts safety, height
Imitate a problem of construction.Anchor pole, will using the intensity of anchor pole as the equipment most widely used in support engineering, dosage is most
Muti-piece mutually independent sillar connection is integral, so that palisades is stablized, is firm, once thus anchor pole fail, tunnel, tunnel
Safety is by serious threat.With the development of science and technology, the anchor pole for generalling use slip casting type at present is anchored, and note is passed through
The mode of slurry realizes the full length fastening of anchor pole, improves country rock carrying pressure itself.But grouted anchor bar anchoring initial stage without first
Anchor-hold only just generates anchorage effect after grout cures to some strength, and the contact area of grouted anchor bar and country rock is insufficient,
Country rock is easily deformed, and grouted anchor bar when deformation is easy to fail, and the cohesive force of anchor pole and country rock is very low, to make slip casting anchor
Bar, which loses, should supporting effect；In addition, being easy due to the influence of the factors such as special geologic condition, construction equipment, personnel's operation
Phenomena such as causing surrouding rock deformation, hinders the installation of anchor pole, is easy to cause anchor pole during not reaching fixed anchorage length
It is stuck, finally have to amputate the extra body of rod, influences the installation effectiveness and support cost of anchor pole.How grouted anchor bar is increased
First anchor-hold, anchoring effect and can transform length according to actual needs, farthest play the effect of anchor pole, this technology is difficult
Topic is badly in need of solving.
China State Intellectual Property Office discloses a kind of entitled " the hollow slip casting anchor of intumescent on April 27th, 2016
Bar ", application No. is the utility applications of CN201521021782.3.The patent provides a kind of hollow slip casting anchor of intumescent
Bar is additionally arranged expansion device, and by adjusting nut, the expansion arc by extruded tube along anchor bar body toward expansion tube is moved, so that expansion
The radial spreading of section, increases the contact frictional resistance of grouted anchor bar and country rock hole wall, improves grouted anchor bar in the first anchor at anchoring initial stage
Power.The intumescent hollow grouting anchor increases the anchoring property of anchor pole on the whole, has played in engineering practice good
Supporting effect.The patent efficiently solves grouted anchor bar in contact surface of the initial stage without first anchor-hold and grouted anchor bar and country rock of anchoring
The problems such as product is insufficient, but it is still unresolved in terms of how according to actual needs transform length problem.
Summary of the invention
Anchor-hold is insufficient, anchoring effect is bad and cannot convert according to actual needs at the beginning of in order to overcome current existing grouted anchor bar
Length issue, the utility model provide a kind of intumescent combination grouted anchor bar, the grouted anchor bar be arranged bolt expansion device and
Attachment device improves first anchor-hold of the grouted anchor bar at the initial stage of anchoring, it can be achieved that anchor pole contacts to the greatest extent with country rock hole wall,
By slip casting anchor bar body is effectively combined into one with rock, and rock-bolt length can be converted according to actual needs.
To solve the above problems, the utility model adopts the following technical solution:
(1) intumescent combines grouted anchor bar by anchor rod body, anchor rod pallet board, bolt expansion device, coupling for anchor bars group
At.
(2) anchor rod body is divided into Bower Anchor bar and is followed by anchor pole, and Bower Anchor bar is divided into two layers inside and outside, interior anchor with anchor pole is followed by
The body of rod is fixed among outer anchor bar body, and Bower Anchor bar bottom end is provided with taper bit, is followed by anchor pole top and is provided with stop grouting plug,
Stop grouting plug top is fixedly connected with anchor rod pallet board by nut, Bower Anchor bar and is followed by being arranged with multiple plasma discharge holes on anchor pole outer wall.
(3) expansion device mainly includes expansion tube, spring, composite expanding agent and hangnail steel body.Including expansion pipe sleeve
Between anchor bar body and outer anchor bar body, interior anchor bar body is fixedly connected with by spring, composite expanding agent is arranged in expansion tube and interior anchor pole
Between body.
(4) coupling for anchor bars includes connector sleeve, connecting rod, hangnail connection buckle, groove, and the connecting rod is set to
It is followed by the bottom end of anchor pole, hangnail connection buckle is provided on head outer wall, the connector sleeve is fixedly installed on the top of Bower Anchor bar, even
The groove of setting and the cooperation of hangnail connection buckle in female connector.
(5) quantity in the plasma discharge hole described in is consistent with the quantity of hangnail steel body；The ingredient of composite expanding agent is mainly sulphur aluminium
Sour calcium class.
The beneficial effects of the utility model are: a kind of intumescent provided by the utility model combines grouted anchor bar, it can be to branch
Nurse's journey plays the role of good.By the way that the bolt expansion device that can be radially expanded is arranged on anchor bar body, make hangnail steel body branch
The frictional resistance of support, hangnail steel body and country rock close contact, raising grouted anchor bar and country rock hole wall and just initial anchor-hold；Meanwhile
When carrying out slip casting work, composite expanding agent and cement mixing, the volume expansion when cement setting hardening not only fill bolt expansion
Opening is set, and is sufficient filling with the effect in cement gap, increases the intensity of cement.It will be starched by the plasma discharge hole on grouted anchor bar surface
Liquid penetrates into hole wall peripheral rock, plays good reinforcement effect to peripheral rock, ensure that the stabilization of entire well tunnel
Property, so that anchor bar body is effectively combined into one with rock, realize the fusion of anchor pole, slurries, country rock three.Anchor pole had been inserted into
Cheng Zhong, hangnail connection buckle can be stuck in groove so that anchor pole more to advancing in soil, be followed by anchor pole connect with connector sleeve it is closer,
It will pull back after being followed by anchor bar body rotation, is separated so that being followed by anchor pole with Bower Anchor bar, the recycling for greatly facilitating anchor bar body is taken out.
The utility model structure is simple, and slip casting is convenient, increases the anchoring property of anchor pole on the whole, realizes anchor pole and country rock is maximum
The contact of degree, bonding, can transform length according to actual needs, played good supporting effect in engineering practice.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing:
The slip casting expansion structure schematic diagram of Fig. 1 the utility model.
The non-slip casting expansion structure schematic diagram of Fig. 2 the utility model.
Sectional schematic diagram at the attachment device of Fig. 3 the utility model.
1. Bower Anchor bar in figure, 2. are followed by anchor pole, and anchor bar body in 3., 4. outer anchor bar bodies, 5. taper bits, 6. only starch
Plug, 7. nuts, 8. anchor rod pallet boards, 9. plasma discharge holes, 10. expansion tubes, 11. springs, 12. composite expanding agents, 13. hangnail steel
Body, 14. connector sleeves, 15. connecting rods, 16. hangnail connection buckles, 17. grooves.
Specific embodiment
In Fig. 1, a kind of intumescent combination grouted anchor bar, by anchor rod body, anchor rod pallet board, bolt expansion device, anchor pole
Attachment device composition.The anchor rod body is divided into Bower Anchor bar (1) and is followed by anchor pole (2), Bower Anchor bar (1) and is followed by anchor pole (2) point
It is inside and outside two layers, interior anchor bar body (3) is fixed among outer anchor bar body (4), and Bower Anchor bar (1) bottom end is provided with taper bit
(5), it is followed by anchor pole (2) top to be provided with stop grouting plug (6), stop grouting plug (6) top is fixedly connected with anchor rod pallet board by nut (7)
(8), it Bower Anchor bar (1) and is followed by being arranged with multiple plasma discharge holes (9) on anchor pole (2) outer wall, slurries are penetrated into hole by plasma discharge hole (9)
Wall peripheral rock plays good reinforcement effect to peripheral rock, ensure that the stability of entire well tunnel.It is described swollen
Swollen device mainly includes expansion tube (10), spring (11), composite expanding agent (12) and hangnail steel body (13).Expansion tube (10) covers
It between interior anchor bar body (3) and outer anchor bar body (4), is fixedly connected interior anchor bar body (3) by spring (11), composite expanding agent (12) is set
It sets between expansion tube (10) and interior anchor bar body (3), when carrying out slip casting work, composite expanding agent (12) and cement mixing work as water
Volume expansion when mud condensation hardening, expansion device is not only opened, but also be sufficient filling with the effect in cement gap, increase cement
Intensity.Expansion device can be such that hangnail steel body (13) support, and be in close contact with country rock, and raising grouted anchor bar rubs with country rock hole wall
Wipe resistance and just initial anchor-hold.The quantity of the plasma discharge hole (9) is consistent with the quantity of hangnail steel body (13)；Composite expanding agent (12)
Ingredient be mainly calcium sulphoaluminate class.
It include connector sleeve (14) in the attachment device, connecting rod (15), hangnail connection buckle (16), recessed in Fig. 2, Fig. 3
Slot (17), the connecting rod (15) are set to the bottom end for being followed by anchor pole (2), hangnail connection buckle (16) are provided on head outer wall,
The connector sleeve (14) is fixedly installed on the top of Bower Anchor bar (1), and setting cooperates with hangnail connection buckle (16) in connector sleeve (14)
Groove (17).During insertion, it is inner that hangnail connection buckle (16) can be stuck in groove (17) to anchor pole, so that before anchor pole is got over in soil
Into, be followed by anchor pole (2) connect with connector sleeve (14) it is closer, will be followed by anchor pole (2) rotation after it is outside one draw so that being followed by anchor pole
(2) it is separated with Bower Anchor bar (1), the recycling for greatly facilitating anchor bar body is taken out.
Claims (2)
1. a kind of intumescent combines grouted anchor bar, by anchor rod body, anchor rod pallet board, bolt expansion device, coupling for anchor bars group
At, it is characterized in that: the anchor rod body is divided into Bower Anchor bar and is followed by anchor pole, Bower Anchor bar and be followed by anchor pole be divided into it is two layers inside and outside, it is interior
Anchor bar body is fixed among outer anchor bar body, and Bower Anchor bar bottom end is provided with taper bit, is followed by anchor pole top and is provided with only to starch
Plug, stop grouting plug top are fixedly connected with anchor rod pallet board by nut, Bower Anchor bar be followed by being arranged with multiple plasma discharges on anchor pole outer wall
Hole；The bolt expansion device mainly includes expansion tube, spring, composite expanding agent and hangnail steel body, expands pipe sleeve in interior anchor pole
Between body and outer anchor bar body, interior anchor bar body is fixedly connected with by spring, composite expanding agent setting expansion tube and interior anchor bar body it
Between；The coupling for anchor bars includes connector sleeve, connecting rod, hangnail connection buckle, groove, and the connecting rod, which is set to, is followed by anchor pole
Bottom end, be provided with hangnail connection buckle on head outer wall, the connector sleeve is fixedly installed on the top of Bower Anchor bar, sets in connector sleeve
Set the groove with the cooperation of hangnail connection buckle.
2. a kind of intumescent according to claim 1 combines grouted anchor bar, it is characterized in that: the quantity in the plasma discharge hole
Consistent with the quantity of hangnail steel body, the ingredient of composite expanding agent is mainly calcium sulphoaluminate class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821114907.0U CN208518692U (en) | 2018-07-15 | 2018-07-15 | A kind of intumescent combination grouted anchor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821114907.0U CN208518692U (en) | 2018-07-15 | 2018-07-15 | A kind of intumescent combination grouted anchor bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518692U true CN208518692U (en) | 2019-02-19 |
Family
ID=65335767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821114907.0U Expired - Fee Related CN208518692U (en) | 2018-07-15 | 2018-07-15 | A kind of intumescent combination grouted anchor bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518692U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882226A (en) * | 2019-04-13 | 2019-06-14 | 张亚歌 | A kind of tensioning locking anchor pole |
| CN110529162A (en) * | 2019-10-15 | 2019-12-03 | 河源市海川新材料科技有限公司 | Assembled slip-casting roofbolt made of a kind of curing glass fiber reinforced rebar |
| CN112879058A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Radial internal expansion resistance-increasing anchor rod cable supporting device and method |
-
2018
- 2018-07-15 CN CN201821114907.0U patent/CN208518692U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882226A (en) * | 2019-04-13 | 2019-06-14 | 张亚歌 | A kind of tensioning locking anchor pole |
| CN110529162A (en) * | 2019-10-15 | 2019-12-03 | 河源市海川新材料科技有限公司 | Assembled slip-casting roofbolt made of a kind of curing glass fiber reinforced rebar |
| CN110529162B (en) * | 2019-10-15 | 2024-04-26 | 河源市海川新材料科技有限公司 | Combined grouting anchor rod made of photo-cured glass fiber reinforced ribs |
| CN112879058A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Radial internal expansion resistance-increasing anchor rod cable supporting device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20190715 |