CN205895286U - Mine support stock of preventing splitting - Google Patents
Mine support stock of preventing splitting Download PDFInfo
- Publication number
- CN205895286U CN205895286U CN201620913820.4U CN201620913820U CN205895286U CN 205895286 U CN205895286 U CN 205895286U CN 201620913820 U CN201620913820 U CN 201620913820U CN 205895286 U CN205895286 U CN 205895286U
- Authority
- CN
- China
- Prior art keywords
- helical blade
- bar body
- sleeve pipe
- mine support
- anchor bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a mine support technical field, concretely relates to mine support stock of preventing splitting. Adopt the stock body to go up the interval and be provided with anchor section and free section, be provided with the helical blade I that five spiral included angle are 60 degrees on the stock body of anchor section, helical blade I is last to be provided with densely covered zigzag protrusion, the helical blade I surface covers there is epoxy anticorrosion coating, be provided with high strength spring on free section's the stock body, the outer cladding of high strength spring has the sleeve pipe, is provided with the helical blade II that spiral included angle is 60 degrees on the sleeve pipe, the technical scheme of the steel backing plate of trompil in the middle of the sleeve pipe both ends are provided with. The utility model provides a stress concentration takes place on effectively avoiding the stock body for the mine support stock, prevents the stock fracture, has effectively increased area of contact moreover, has increased the withdrawal resistance, and anchoring effect is better.
Description
Technical field
The utility model is related to technical field of mine support and in particular to a kind of anti-fracture mine support anchor pole.
Background technology
Anchor pole is mainly used in the stable structure having crackle or cavity as internal in tunnel, galleries or crag etc., by using anchor
The intensity of bar will separate for polylith sillar connect integral so that crag can stablize, firm, anchor of the prior art
There is following defect in the application in bar: (1) in Soft Rock Engineering, because cumulative formula displacement transfer easily makes by anchor when anchor rod anchored
Though medium failure by shear, anchor pole cannot suitable for surrounding rock deformation displacement be pulled off, and causes suspension roof support to lose efficacy；(2) structure is simple,
Anchoring contact area is less, and withdrawal resistance is not enough；(3), when use environment is more severe, environmental corrosion greatly accelerates the mistake of anchor pole
Effect, thus shortening the anchor pole life-span, having influence on the whole service life of engineering and using safety.
Utility model content
For solving the defect that in above-mentioned prior art, anchor pole exists in the application, the utility model provides a kind of anti-fracture ore deposit
Well support anchor rod.
For achieving the above object, the utility model adopts the following technical scheme that
A kind of anti-fracture mine support anchor pole, including anchor bar body, is provided with slip casting passage, described slip casting inside described anchor bar body
The end of passage is provided with check valve, and the front end of described anchor bar body is provided with drill bit, and it is 45 that described drill bit is provided with spiral angle
The helical blade of degree, the side wall of described drill bit is provided with grout outlet；Anchoring section and freedom are arranged at intervals with described anchor bar body
Section, the anchor bar body of described anchoring section is provided with the helical blade i that five road spiral angles are 60 degree, described helical blade i sets
It is equipped with densely covered sawtooth projection, described helical blade i outer surface is covered with epoxy resin corrosion-inhibiting coating；The anchor pole of described free segment
It is provided with high-strength spring, described high-strength spring is coated with sleeve pipe, it is 60 that described sleeve pipe is provided with spiral angle on body
The helical blade ii of degree, described sleeve pipe two ends are provided with the steel backing plate of central aperture, central aperture diameter of described backing plate etc.
It is provided with elastic washer outside the diameter of slip casting passage, described backing plate.
Preferably, being provided with rubber seal between described sleeve pipe and backing plate.
Preferably, described helical blade ii outer surface is covered with epoxy resin corrosion-inhibiting coating.
Preferably, described drill bit bottom arranges four open slots, drill bit bottom is divided into four anchorings by described open slot
Support chip.
Preferably, the rear end of described anchor bar body is connected with steel strand wires.
Preferably, the rear end of described anchor bar body is connected with steel strand wires by adapter sleeve.
The beneficial effects of the utility model are:
The front end of anchor bar body is provided with drill bit, drill bit is provided with the helical blade that spiral angle is 45 degree, in soft clay area
This blade has extremely strong penetration power, reduces drilling difficulty, increases contact area simultaneously, enhances anchor force；Anchoring section
The helical blade that five road spiral angles are 60 degree is provided with anchor bar body, described helical blade is provided with densely covered zigzag convex
Rise, increase contact area and frictional resistance, enhance anchor force；Anchoring section and free segment be arranged at intervals with anchor bar body, two
Harmony depositing between section, interacts, and forms monocoque structure, and free segment can not only dissipate the deformation energy of anchoring section, and
There is supporting role to anchoring section, improve anchoring section bearing capacity, the harmony of twoth area is simultaneously saved as shape monocoque structure；Outside helical blade
Surface is covered with epoxy resin corrosion-inhibiting coating, can effectively protective mooring rod be corroded on the ground of bad environments；The anchor bar body of free segment
On be provided with high-strength spring, using the expansion performance of high-strength spring, enable the large deformation of anchor pole self adaptation country rock, and
Cushioning effect is played to burst fire-disaster；High-strength spring is coated with sleeve pipe, makes anchor bar body keep isolation, country rock with country rock
Will not wrap up in and embrace anchor bar body synchronous shift, so that relaxation zone surrouding rock deformation energy can be freely dissipated, eliminate surrounding rock displacement to anchor pole
Transmission synergistic effect, prevent anchor pole from being drawn bad inefficacy；The helical blade ii that spiral angle is 60 degree is provided with sleeve pipe, can increase
Plus frictional resistance and contact area, increase anchor force；Plastic bushing two ends are provided with the steel backing plate of central aperture, for increasing
Anchor pole axial tension；It is provided with elastic washer outside backing plate, play closure and the effect tightening, can prevent from entering in sleeve pipe and backing plate
Enter mortar Anchor Agent.
It is provided with rubber seal between sleeve pipe and backing plate, play closure and the effect tightening, sleeve pipe and backing plate can be prevented
Interior entrance mortar Anchor Agent；Helical blade ii outer surface is covered with epoxy resin corrosion-inhibiting coating, plays antisepsis；Drill bit bottom sets
Put four open slots, drill bit bottom is divided into four anchorage support pieces by described open slot, eliminate and install in anchor rod body bottom
The tube wall is made to burst the rendrock of deformation, it is to avoid explosive charge expands infringement during tube wall, anchor structure being caused, during use,
Add proper amount of explosive to carry out reaming in anchor hole bottom before this, make anchor hole bottom form cavity, then by anchor rod body
Bottom is placed in anchor hole bottom
In cavity, then carry out slip casting to the inside of anchor rod body, anchorage support piece is made to the week side of boss by the extruding of slurries
Expansion, it is ensured that anchorage support piece is stuck in cavity, finally carries out slip casting again into the anchor hole of anchor rod body surrounding again, completes anchor
The anchoring of bar；The rear end of anchor bar body is connected with steel strand wires, because steel strand wires can bend, so the length of anchor pole is not subject to tunnel empty
Between restriction, can effectively solving at present due to the not enough problem for extra long anchor bar cannot be used of lane space；The end of slip casting passage
End is provided with check valve, prevents slurries adverse current during slip casting.
Brief description
Fig. 1 is the structural representation of the utility model embodiment.
In figure: 1: drill bit 2: grout outlet 3: anchoring section 4: free segment 5: sleeve pipe 6: backing plate 7: elastic washer
8: helical blade i 9: helical blade 10: helical blade ii 11: high-strength spring 12: rubber seal 13: zigzag is convex
Rise 14: open slot 15: steel strand wires 16: adapter sleeve.
Specific embodiment
With reference to embodiment, and combine accompanying drawing the technical solution of the utility model is further elaborated with.
Embodiment
As shown in figure 1, a kind of anti-fracture mine support anchor pole, including anchor bar body, it is provided with slip casting inside described anchor bar body and leads to
Road, the end of described slip casting passage is provided with check valve, and the front end of described anchor bar body is provided with drill bit 1, described drill bit 1 is provided with
Spiral angle is 45 degree of helical blade 9, and the side wall of described drill bit 1 is provided with grout outlet 2；Interval setting on described anchor bar body
There are anchoring section 3 and free segment 4, the anchor bar body of described anchoring section 3 is provided with the helical blade i that five road spiral angles are 60 degree
8, described helical blade i 8 is provided with densely covered sawtooth projection 13, described helical blade i 8 outer surface is covered with epoxy resin
Corrosion-inhibiting coating；High-strength spring 11 is provided with the anchor bar body of described free segment 4, described high-strength spring 11 is coated with sleeve pipe
5, described sleeve pipe 5 is provided with the helical blade ii 10 that spiral angle is 60 degree, described sleeve pipe 5 two ends are provided with central aperture
Steel backing plate 6, the central aperture diameter of described backing plate 6 is equal to the diameter of slip casting passage, and the outside setting of described backing plate 6 is flexible
Packing ring 7.It is provided with rubber seal 12 between described sleeve pipe 5 and backing plate 6.Described helical blade ii 10 outer surface is covered with epoxy
Resin resistant coating.Described drill bit 1 bottom arranges four open slots 14, and drill bit 1 bottom is divided into four anchors by described open slot 14
Clamped blade.The rear end of described anchor bar body is connected with steel strand wires 15.The rear end of described anchor bar body is connected with steel by adapter sleeve 16
Twisted wire 15.
Claims (6)
1. a kind of anti-fracture mine support anchor pole, including anchor bar body, is provided with slip casting passage, its feature exists inside described anchor bar body
In: the end of described slip casting passage is provided with check valve, and the front end of described anchor bar body is provided with drill bit (1), described drill bit (1) sets
It is equipped with the helical blade (9) that spiral angle is 45 degree, the side wall of described drill bit (1) is provided with grout outlet (2)；Described anchor bar body
On be arranged at intervals with anchoring section (3) and free segment (4), the anchor bar body of described anchoring section (3) is provided with five road spiral angles is
60 degree of helical blade i(8), described helical blade i(8) on be provided with densely covered sawtooth projection (13), described helical blade
(8) outer surface is covered with epoxy resin corrosion-inhibiting coating；It is provided with high-strength spring (11), institute on the anchor bar body of described free segment (4)
State high-strength spring (11) and be coated with sleeve pipe (5), described sleeve pipe (5) is provided with the helical blade that spiral angle is 60 degree
(10), described sleeve pipe (5) two ends are provided with the steel backing plate (6) of central aperture, and the central aperture diameter of described backing plate (6) is equal to
The diameter of slip casting passage, is provided with elastic washer (7) outside described backing plate (6).
2. as claimed in claim 1 anti-fracture mine support anchor pole it is characterised in that: between described sleeve pipe (5) and backing plate (6)
It is provided with rubber seal (12).
3. as claimed in claim 1 anti-fracture mine support anchor pole it is characterised in that: described helical blade(10) outer surface
It is covered with epoxy resin corrosion-inhibiting coating.
4. as claimed in claim 1 anti-fracture mine support anchor pole it is characterised in that: described drill bit (1) bottom arranges four
Open slot (14), drill bit (1) bottom is divided into four anchorage support pieces by described open slot (14).
5. the anti-fracture mine support anchor pole as described in any one of claim 1 ~ 4 it is characterised in that: the rear end of described anchor bar body
It is connected with steel strand wires (15).
6. as claimed in claim 5 anti-fracture mine support anchor pole it is characterised in that: the rear end of described anchor bar body pass through connect
Set (16) is connected with steel strand wires (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913820.4U CN205895286U (en) | 2016-08-22 | 2016-08-22 | Mine support stock of preventing splitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913820.4U CN205895286U (en) | 2016-08-22 | 2016-08-22 | Mine support stock of preventing splitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895286U true CN205895286U (en) | 2017-01-18 |
Family
ID=57779337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620913820.4U Expired - Fee Related CN205895286U (en) | 2016-08-22 | 2016-08-22 | Mine support stock of preventing splitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989778A (en) * | 2019-04-08 | 2019-07-09 | 山东科技大学 | A kind of multistage anchoring yielding automatically anchor pole and anchoring process |
-
2016
- 2016-08-22 CN CN201620913820.4U patent/CN205895286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989778A (en) * | 2019-04-08 | 2019-07-09 | 山东科技大学 | A kind of multistage anchoring yielding automatically anchor pole and anchoring process |
| CN109989778B (en) * | 2019-04-08 | 2020-08-28 | 山东科技大学 | Multi-section anchoring automatic yielding anchor rod and anchoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170118 Termination date: 20180822 |