CN204267066U - A kind of constant-resistance anchor rod pallet board - Google Patents
A kind of constant-resistance anchor rod pallet board Download PDFInfo
- Publication number
- CN204267066U CN204267066U CN201420729430.2U CN201420729430U CN204267066U CN 204267066 U CN204267066 U CN 204267066U CN 201420729430 U CN201420729430 U CN 201420729430U CN 204267066 U CN204267066 U CN 204267066U
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- China
- Prior art keywords
- housing
- piston body
- anchor
- constant
- pallet board
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of constant-resistance anchor rod pallet board, comprise housing, piston body and wall supporting disk, described wall supporting disk to be sleeved on housing and to be welded and fixed, described piston body is close to inner walls and is installed and form a closed cavity with housing, described cavity side is positioned on housing exterior walls and is provided with pressure-limiting check valve, the middle part of described piston body has central axis hole, and one end of anchor pole is fixed in wall through the central axis hole of piston body, and the other end is close to the anchor nut be enclosed within anchor pole.This constant-resistance anchor rod pallet board adopts hydraulic means, oil emulsion is injected by the cavity that formed toward piston body and housing, to absorb better and to discharge the elasticity energy that roadway surrounding rock large deformation produces, thus ensure that anchor rod pallet board is not bad, enable to continue as the anchor support force that anchor pole provides constant, make anchor pole still have good support action under country rock large deformation condition.
Description
Technical field
The utility model relates to a kind of constant-resistance anchor rod pallet board.
Background technology
Bolt support is as a kind of active support mode, and its supporting effect is good, and support cost is low, effectively can improve Drift stability, be conducive to roadway maintenance, has become the main support form in China's coal-mine tunnel.At present, the main theory of bolt support has: suspensory theory, built-up arch theory, compound beam theory and horizontal stress are theoretical.Theory according to bolt support can carry out Design and optimization to bolt design parameters.But because China's bolt product process is backward and China's geological condition is complicated, the application life of anchor pole is shorter, and the supporting intensity of anchor pole does not often reach requirement.
China has carried out extensive, deep research to the supporting effect of anchor pole and supporting mechanism.Research shows, the supporting effect of anchor rod pallet board on anchor pole has important impact.Anchor rod pallet board produces the requisite component of anchored force.Anchor rod pallet board provides anchor support force by extruding roadway surrounding rock, makes roadway surrounding rock be in triaxial stress state, can obviously improve roadway surrounding rock stress, and especially anchor support force plays a role immediately after anchor pole applies pretightning force, constraint surrouding rock deformation.In deformation of the surrounding rock in tunnel process, the distortion of its surface rock can form extruding to the anchor rod pallet board be fastened on roadway surrounding rock surface, anchor rod pallet board is out of shape, destroys, thus make the anchor support force of anchor rod pallet board forfeiture to roadway surrounding rock, cause Anchoring Strength of Rock Bolts to reduce and even make bolt support lose efficacy.In existing bolt support technology research, often more focus on the research to anchor rod body, then very few to the technical research of anchor rod pallet board.In engineering site, damaged by anchor rod pallet board and the anchor pole that causes lost efficacy and accounts for anchor pole and to lose efficacy 21% of sum.Therefore, be extremely necessary to strengthen the research to anchor rod pallet board.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provide a kind of structure simple, the constant-resistance anchor rod pallet board that anchor pole provides constant anchor support force can be continuously.
The technical scheme that the utility model solves the problem is: a kind of constant-resistance anchor rod pallet board, comprise housing, piston body and wall supporting disk, described wall supporting disk to be sleeved on housing and to be welded and fixed, described piston body is close to inner walls and is installed and form a closed cavity with housing, described cavity side is positioned on housing exterior walls and is provided with pressure-limiting check valve, the middle part of described piston body has central axis hole, one end of anchor pole is fixed in wall through the central axis hole of piston body, and the other end is close to the anchor nut be enclosed within anchor pole.
In above-mentioned constant-resistance anchor rod pallet board, described housing is cylindric.
In above-mentioned constant-resistance anchor rod pallet board, the external diameter of described piston body is more bigger than the internal diameter of housing.
In above-mentioned constant-resistance anchor rod pallet board, ringwise, the internal diameter of wall supporting disk and the external diameter of housing match described wall supporting disk.
The beneficial effects of the utility model are:
1, this constant-resistance anchor rod pallet board adopts hydraulic means, oil emulsion is injected by the cavity that formed toward piston body and housing, to absorb better and to discharge the elasticity energy that roadway surrounding rock large deformation produces, thus ensure that anchor rod pallet board is not bad, enable to continue as the anchor support force that anchor pole provides constant, make anchor pole still have good support action under country rock large deformation condition;
2, this constant-resistance anchor rod pallet board apparatus structure is simple, is easy to construction, can completes the construction and installation to this constant-resistance anchor rod pallet board under the existing jumbolter condition in mine.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model.
Fig. 2 is the upward view of Fig. 1.
Structural representation when Fig. 3 is utility model works.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1 and Figure 2, the present embodiment comprises housing 1, piston body 2, pressure-limiting check valve 3, cavity 4, anchor pole 6, anchor nut 7 and wall supporting disk 8.
Described housing 1 is in cylindric, and ringwise, the internal diameter of wall supporting disk 8 and the external diameter of housing 1 match described wall supporting disk 8, and wall supporting disk 8 to be sleeved on housing 1 and to be welded and fixed; Described piston body 2 is close to housing 1 inwall and is installed and form a closed cavity 4 with housing 1, the external diameter of described piston body 2 is more bigger than the internal diameter of housing 1, ensure the sealing of cavity 4, and for making to produce between housing 1 and piston body 2 Support Resistance that frictional resistance can provide to increase constant-resistance anchor rod pallet board; Described cavity 4 side is positioned on housing 1 outer wall and is provided with pressure-limiting check valve 3, and can inject oil emulsion in cavity 4 by pressure-limiting check valve 3, oil emulsion can form certain pressure to cavity 4 inwall after constantly injecting cavity 4 in the past; The middle part of described piston body 2 has central axis hole, and one end of anchor pole 6 is fixed in wall through the central axis hole of piston body 2, and the other end is close to the anchor nut 7 be enclosed within anchor pole 6.
Operating principle of the present utility model is as follows: before construction, adopt electric coal drill, roadway surrounding rock wall is first got pallet boring 5, the pallet boring aperture of 5 and the external diameter of housing 1 match, bottom pallet boring 5, carry out armature boring construction, and anchor pole 6 front portion is fixed in wall through the central axis hole of piston body 2, anchor nut 7 is tightened at anchor pole 6 body of rod afterbody, constant-resistance anchor rod pallet board one side is withstood pallet and is holed on 5 hole walls, and one side is close to the anchor nut 7 be enclosed within anchor pole 6, as shown in Figure 1; After tightening anchor nut 7, wall supporting disk 8 can play good supporting role to constant-resistance anchor rod pallet board surrounding rock, prevents the roof completely failing of country rock; As shown in Figure 3, along with the increase of roadway surrounding rock stress, anchor pole 6 axial tension increases, drive anchor nut 7 to country rock internal motion, extruding is formed to constant-resistance anchor rod pallet board, promote piston body 2 to travel forward, along with piston body 2 travels forward, cavity 4 internal emulsification oil is extruded, strong hydraulic pressure is formed in cavity 4, when cavity 4 internal emulsification fluid pressure exceedes the restriction numerical value of pressure-limiting check valve 3 on housing 1 outer wall, the oil emulsion in cavity 4 discharges certain volume, until the fluid pressure drop in cavity 4 is to the restriction force value of pressure-limiting check valve 3.
Claims (4)
1. a constant-resistance anchor rod pallet board, it is characterized in that: comprise housing, piston body and wall supporting disk, described wall supporting disk to be sleeved on housing and to be welded and fixed, described piston body is close to inner walls and is installed and form a closed cavity with housing, described cavity side is positioned on housing exterior walls and is provided with pressure-limiting check valve, the middle part of described piston body has central axis hole, and one end of anchor pole is fixed in wall through the central axis hole of piston body, and the other end is close to the anchor nut be enclosed within anchor pole.
2. constant-resistance anchor rod pallet board as claimed in claim 1, is characterized in that: described housing is cylindric.
3. constant-resistance anchor rod pallet board as claimed in claim 2, is characterized in that: the external diameter of described piston body is more bigger than the internal diameter of housing.
4. constant-resistance anchor rod pallet board as claimed in claim 2, is characterized in that: ringwise, the internal diameter of wall supporting disk and the external diameter of housing match described wall supporting disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729430.2U CN204267066U (en) | 2014-11-29 | 2014-11-29 | A kind of constant-resistance anchor rod pallet board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729430.2U CN204267066U (en) | 2014-11-29 | 2014-11-29 | A kind of constant-resistance anchor rod pallet board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267066U true CN204267066U (en) | 2015-04-15 |
Family
ID=52801938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420729430.2U Expired - Fee Related CN204267066U (en) | 2014-11-29 | 2014-11-29 | A kind of constant-resistance anchor rod pallet board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267066U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373146A (en) * | 2014-11-29 | 2015-02-25 | 湖南科技大学 | Constant-resistance anchor rod tray |
| CN109184765A (en) * | 2018-08-03 | 2019-01-11 | 中南大学 | A kind of stable state allow pressure release can detachable hydraulic anchor pole and its method for protecting support |
-
2014
- 2014-11-29 CN CN201420729430.2U patent/CN204267066U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373146A (en) * | 2014-11-29 | 2015-02-25 | 湖南科技大学 | Constant-resistance anchor rod tray |
| CN109184765A (en) * | 2018-08-03 | 2019-01-11 | 中南大学 | A kind of stable state allow pressure release can detachable hydraulic anchor pole and its method for protecting support |
| CN109184765B (en) * | 2018-08-03 | 2020-06-16 | 中南大学 | Detachable hydraulic anchor rod capable of yielding and releasing energy in steady state and supporting method thereof |
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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 |
Granted publication date: 20150415 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |