CN205225305U - Cover tube swelling formula lets pressure stock - Google Patents
Cover tube swelling formula lets pressure stock Download PDFInfo
- Publication number
- CN205225305U CN205225305U CN201521119176.5U CN201521119176U CN205225305U CN 205225305 U CN205225305 U CN 205225305U CN 201521119176 U CN201521119176 U CN 201521119176U CN 205225305 U CN205225305 U CN 205225305U
- Authority
- CN
- China
- Prior art keywords
- pressure
- rod
- pressure pipe
- nut
- pipe
- 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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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The utility model relates to a cover tube swelling formula lets pressure stock, include: the body of rod, nut, antifriction gasket, let and press pipe, spherical gasket, tray. The body of rod is located the outside tail end of country rock and passes through the tray with spherical gasket with making the fastening of the effective nut of pressure fixed. Let press the outside of tubes periphery on the long 40mm's of evenly distributed 3 strip width 1mm joint -cutting. Through letting the joint -cutting of pressing the pipe, when the roof coming pressure, the ball -type gasket can imbed and make the pressure intraductal, makes to let and presses the pipe to take place expansion deformation to release roof pressure reaches and lets the pressure effect. The utility model discloses simple structure, low cost, maneuverability is strong, makes the pressure effectual, has good social value and economic benefits.
Description
Technical field
The utility model relates to a kind of pressure-relieving achor bar, particularly relates to a kind of casing expandable formula pressure-relieving achor bar, belongs to mine bolt technical field.
Background technology
Along with the increasing day by day of coal mining depth, large mining depth, the heavily stressed problem brought are day by day remarkable, particularly great difficulty is brought to roadway support engineering, because rock deformation is large, ore deposit pressure manifests violent, existing anchor pole poor ductility, intensity are low, be difficult to the requirement meeting actual production, easily occur disrumpent feelings phenomenon.For this problem, a lot of experts and scholars start with from the material of anchor pole and specification, improve mechanical property and the ductility of anchor pole, but this also make support cost greatly increase.
Utility model content
The utility model overcomes the weak point that prior art exists, and technical problem to be solved proposes a kind of casing expandable formula pressure-relieving achor bar exactly, effectively reduces the disrumpent feelings phenomenon of anchor pole tension, improves supporting performance, expand the scope of application, also a saving support cost.
In order to solve above-mentioned technical barrier, the technical scheme proposed is: a kind of casing expandable formula pressure-relieving achor bar, comprising: the body of rod, nut, antifriction pad, allow pressure pipe, spherical washer, pallet.The tail end that the body of rod is positioned at country rock outside adds spherical washer by pallet and adds and allow pressure pipe fastening nuts fix.Allowing joint-cutting pressure pipe outer circumference surface being uniformly distributed 3 long 40mm of wide 1mm, spherical washer entirety is spherical, and at two ends, symmetry has the circular port overlapped with body of rod diameter compatible.Allow pressure pipe and spherical washer make by stiffness steel, and allow pressure pipe have excellent toughness, the body of rod is indulged muscle screw-thread steel by left-handed nothing and is made, and afterbody has the helicitic texture matched with nut.
The beneficial effect that the utility model and prior art exist is: the utility model is by allowing the joint-cutting of pressure pipe, and when roof weighting, spherical pad sector-meeting embeds and allows in pressure pipe, makes to allow pressure pipe expand distortion, thus release roof pressure, reaches to allow pressure effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 allows the structural representation of pressure pipe.
Fig. 3 is the structural representation of spherical washer.
In figure: 1-nut, 2-antifriction pad, 3-allows pressure pipe, 4-joint-cutting, 5-spherical washer, 6-pallet, the 7-body of rod, 8-country rock.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of casing expandable formula of the utility model pressure-relieving achor bar, comprising: the body of rod 7, nut 1, antifriction pad 2, allow pressure pipe 3, spherical washer 5, pallet 6.The tail end that the body of rod 7 is positioned at country rock 8 outside adds spherical washer 5 by pallet 6 and adds and allow pressure pipe 3 nut 1 be fastened and fixed.Allowing the joint-cutting 4 pressure pipe 3 outer circumference surface being uniformly distributed 3 long 40mm of wide 1mm, spherical washer 5 entirety is spherical, and at two ends, symmetry has the circular port overlapped with the body of rod 7 diameter compatible.Allow pressure pipe 3 and spherical washer 5 make by high strength steel, and allow pressure pipe 3 have excellent toughness, the body of rod 7 is indulged muscle screw-thread steel by left-handed nothing and is made, and afterbody has the helicitic texture matched with nut 1.
During installation, the body of rod is anchored in the boring on country rock, then pallet is inserted in the body of rod and makes itself and country rock close contact, be inserted in spherical washer again, then pressure pipe will be allowed to have joint-cutting one end and to be inserted in the body of rod, and make itself and spherical washer close contact, fix finally by antifriction pad and fastening nuts, make close contact between each ingredient, be finally stretched to regulation pretightning force.
The utility model structure is simple, with low cost, workable, makes pressure effective, has good social value and economic benefit.
Claims (1)
1. a casing expandable formula pressure-relieving achor bar, it is characterized in that: comprise the body of rod (7), nut (1), antifriction pad (2), allow pressure pipe (3), spherical washer (5), pallet (6), the body of rod (7) is positioned at the outside tail end of country rock (8) and adds spherical washer (5) by pallet (6) and add and allow pressure pipe (3) nut (1) be fastened and fixed, allowing the joint-cutting (4) pressure pipe (3) outer circumference surface being uniformly distributed 3 long 40mm of wide 1mm, spherical washer (5) entirety is spherical, the circular port overlapped with the body of rod (7) diameter compatible is had in two ends symmetry, pressure pipe (3) and spherical washer (5) is allowed to make by high strength steel, and allow pressure pipe (3) have excellent toughness, the body of rod (7) is indulged muscle screw-thread steel by left-handed nothing and is made, afterbody has the helicitic texture matched with nut (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119176.5U CN205225305U (en) | 2015-12-30 | 2015-12-30 | Cover tube swelling formula lets pressure stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119176.5U CN205225305U (en) | 2015-12-30 | 2015-12-30 | Cover tube swelling formula lets pressure stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225305U true CN205225305U (en) | 2016-05-11 |
Family
ID=55900379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521119176.5U Expired - Fee Related CN205225305U (en) | 2015-12-30 | 2015-12-30 | Cover tube swelling formula lets pressure stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387143A (en) * | 2017-08-30 | 2017-11-24 | 成都现代万通锚固技术有限公司 | One kind frictionally secures formula anchor pole |
-
2015
- 2015-12-30 CN CN201521119176.5U patent/CN205225305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387143A (en) * | 2017-08-30 | 2017-11-24 | 成都现代万通锚固技术有限公司 | One kind frictionally secures formula anchor pole |
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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: 20160511 Termination date: 20161230 |