CN205225304U - Novel multistage pressure stock that lets - Google Patents
Novel multistage pressure stock that lets Download PDFInfo
- Publication number
- CN205225304U CN205225304U CN201521111045.2U CN201521111045U CN205225304U CN 205225304 U CN205225304 U CN 205225304U CN 201521111045 U CN201521111045 U CN 201521111045U CN 205225304 U CN205225304 U CN 205225304U
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- CN
- China
- Prior art keywords
- stake
- zigzag
- spring
- expansion tube
- zigzag expansion
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- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a novel multistage pressure stock that lets, include the stock body of rod, layer board, packing ring, spring, zigzag expansion pipe, help expand stake, nut. The zigzag expansion pipe is opened in the one side near helping the stake upper surface that expands has a plurality of vertical notched inflation grooves to the high strength garter spring of suit no. 1 and inflation groove upper end parallel and level on the zigzag expansion pipe. Help bloated stake to be the unequal round platform of a basal surface diameter shape component, in local nestification in its upper portion and the zigzag expansion pipe. Press when showing great deformations of violent production because of the ore deposit when the stock, the spring is compressive deformation and realize that the one -level lets pressures at first, because the intensity of zigzag expansion pipe is higher than the intensity of spring, when the stock atress is bigger, the inflation groove of zigzag expansion pipe can be helped bloated the continuous realization secondary that struts let the pressure to the stability in the great tunnel of deflection is maintained simultaneously because of the too big possibility of being broken of atress better to the greatly reduced stock.
Description
Technical field
The utility model relates to a kind of new multistage pressure-relieving achor bar, belongs to mine bolt technical field.
Background technology
In recent years, domestic many collieries enter deep mining all successively, the geological conditions of great burying, high-ground stress, bring extreme difficulties to support work, rock deformation is large, and ground pressure manifests strongly, existing support material intensity is low, poor ductility, can not be out of shape by suitable for surrounding rock preferably, occur the disrumpent feelings failure phenomenon of large area anchor pole, had a strong impact on the safety in production of mine.For this phenomenon, start with from the mechanical property improving anchor pole in most domestic colliery, adopts and strengthen support material specification, improves the ways such as material, Enhanced support constraint surrouding rock deformation, but this not only makes support cost greatly increase, and the phenomenon that anchor pole is pulled off still happens occasionally.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is to provide and a kind ofly can realizes the multistage anchor pole allowing pressure, effectively reduces anchor pole tension breakage phenomenon, thus safeguards the stable of the larger tunnel of deflection better.
In order to the problem on technical solution, the technical scheme that the utility model adopts is: a kind of multistage pressure-relieving achor bar, comprises anchor rod body, supporting plate, packing ring, spring, zigzag expansion tube, high strength garter spring, helps swollen stake, nut.Between supporting plate and nut, anchor rod body passes packing ring, spring, zigzag expansion tube from top to bottom successively, helps swollen stake.Zigzag expansion tube helps the side of swollen stake upper surface to have the expansion slot of multiple longitudinal cut close, and on zigzag expansion tube, be set with a high strength garter spring concordant with expansion slot upper end.Help swollen stake to be the truncated cone-shaped component that a top basal surface diameter does not wait, help swollen stake end face diameter to be slightly less than the internal diameter of zigzag expansion tube, the diameter of bottom surface is 1.5 times of zigzag expansion tube external diameter, helps local, the top of swollen stake nested with in zigzag expansion tube.And require the intensity of intensity higher than spring of zigzag expansion tube.
The beneficial effects of the utility model are, owing to have employed technique scheme when anchor pole manifests violent generation moderate finite deformation because of ore deposit pressure, spring first compressive deformation and realize one-level and allow pressure, because the intensity of zigzag expansion tube is higher than the intensity of spring, when rockbolt stress is larger, the expansion slot of zigzag expansion tube can be helped swollen stake constantly to strut to realize secondary allow pressure, simultaneously owing to there is larger frictional force between high strength garter spring and zigzag expansion tube, the catastrophic failure of zigzag expansion tube under high stress effectively can be avoided.Therefore can greatly reduce anchor pole because of stressed excessive and be pulled off may, safeguard the stable of the larger tunnel of deflection better simultaneously.
Accompanying drawing explanation
The utility model is described in further detail by reference to the accompanying drawings for figure below.
Fig. 1 is structural principle schematic diagram of the present utility model.
In Fig. 1,1. anchor rod body, 2. supporting plate, 3. packing ring, 4. spring, 5. zigzag expansion tube, 6. help swollen stake, 7. nut, 8. high strength garter spring.
Detailed description of the invention
As shown in Figure 1, a kind of new multistage pressure-relieving achor bar of the utility model, comprises anchor rod body (1), supporting plate (2), packing ring (3), spring (4), zigzag expansion tube (5), helps swollen stake (6), nut (7), high strength garter spring (8).Anchor rod body (1) is from top to bottom successively through holding in the palm (2), packing ring (3), spring (4), zigzag expansion tube (5), helping swollen stake (6).Zigzag expansion tube (5) helps the side of swollen stake (6) upper surface to have the expansion slot of multiple longitudinal cut close, and at the high strength garter spring (8) that the upper suit one of zigzag expansion tube (5) is concordant with expansion slot upper end, swollen stake (6) is helped to be the truncated cone-shaped component that a top basal surface diameter does not wait, help swollen stake (6) end face diameter to be slightly less than the internal diameter of zigzag expansion tube (5), the diameter of bottom surface is 1.5 times of zigzag expansion tube (5) external diameter.Help local, the top of swollen stake (6) nested with in zigzag expansion tube (5), the least significant end that anchor rod body (1) is positioned at country rock outside is tightly fixing by nut (7).
Claims (1)
1. a new multistage pressure-relieving achor bar, comprises anchor rod body (1), supporting plate (2), packing ring (3), spring (4), zigzag expansion tube (5), help swollen stake (6), nut (7), high strength garter spring (8), is characterized in that: anchor rod body (1) is from top to bottom successively through supporting plate (2), packing ring (3), spring (4), zigzag expansion tube (5), help swollen stake (6), zigzag expansion tube (5) helps the side of swollen stake (6) upper surface to have the expansion slot of multiple longitudinal cut close, and at the high strength garter spring (8) that the upper suit one of zigzag expansion tube (5) is concordant with expansion slot upper end, swollen stake (6) is helped to be the truncated cone-shaped component that a top basal surface diameter does not wait, swollen stake (6) end face diameter is helped to be slightly less than the internal diameter of zigzag expansion tube (5), the diameter of bottom surface is 1.5 times of zigzag expansion tube (5) external diameter, help local, the top of swollen stake (6) nested with in zigzag expansion tube (5), the least significant end that the body of rod is positioned at country rock outside is tightly fixing by nut (7), and requires the intensity of intensity higher than spring (4) of zigzag expansion tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111045.2U CN205225304U (en) | 2015-12-29 | 2015-12-29 | Novel multistage pressure stock that lets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111045.2U CN205225304U (en) | 2015-12-29 | 2015-12-29 | Novel multistage pressure stock that lets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225304U true CN205225304U (en) | 2016-05-11 |
Family
ID=55900378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521111045.2U Expired - Fee Related CN205225304U (en) | 2015-12-29 | 2015-12-29 | Novel multistage pressure stock that lets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060810A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | It is a kind of adapt to roadway deformation allow pressure once supporting method |
| CN107060856A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | Allow pressure device outside a kind of active multistage frequency conversion |
-
2015
- 2015-12-29 CN CN201521111045.2U patent/CN205225304U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060810A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | It is a kind of adapt to roadway deformation allow pressure once supporting method |
| CN107060856A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | Allow pressure device outside a kind of active multistage frequency conversion |
| CN107060810B (en) * | 2017-06-07 | 2020-09-25 | 神华集团有限责任公司 | Yielding primary support method adaptive to roadway deformation |
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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: 20160511 Termination date: 20161229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |