CN204439249U - Load-displacement conversion equipment - Google Patents
Load-displacement conversion equipment Download PDFInfo
- Publication number
- CN204439249U CN204439249U CN201520067847.1U CN201520067847U CN204439249U CN 204439249 U CN204439249 U CN 204439249U CN 201520067847 U CN201520067847 U CN 201520067847U CN 204439249 U CN204439249 U CN 204439249U
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- CN
- China
- Prior art keywords
- load
- profile iron
- anchor pole
- displacement
- lower bolster
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Piles And Underground Anchors (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a kind of load-displacement conversion equipment, it is characterized in that comprising: profile iron, lower bolster and upper padding plate, profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, there is nonplanar structure, its peripheral shape is circular, three-dimensional shape is bowl-type, its center is provided with hole, and anchor pole can pass from this hole, along with profile iron load increases, it is crushed gradually, has monotonically increasing relation between profile iron load and the displacement of generation; According to above-mentioned relation, the measurement of load is converted into the measurement of displacement, and then tries to achieve the axle power of anchor pole.The utility model makes anchor axial force measurement become simple, greatly reduces measurement cost.
Description
Technical field
The present invention relates to the health detection field of the anchor pole of underground works, specifically a kind of load-displacement conversion equipment for anchor pole.
Background technology
In recent years, anchor pole obtains a wide range of applications in underground engineering support field, has played vital role for reduction support cost and minimizing accident.Because anchor pole is embedded in country rock inside, belong to concealed structure, its Gernral Check-up and support action evaluation comparatively difficult.In order to assess support action and the health status of anchor pole, generally using anchor axial force as important evaluation index, but the measurement of anchor axial force is but very difficult.The anchor axial force measuring method adopted both at home and abroad at present mainly comprises: strain measurement method, pressure transducer mensuration and type vibration wire anchor ergometer.
Strain measurement method refers to before rockbolt installation, in bolt shaft to laying foil gauge or fiber grating, produces certain distortion, can measure the axial strain of anchor pole, according to the axle power of the strain calculation anchor pole recorded after rockbolt stress.The foil gauge adopted in this method and fiber grating very easily damage, and require higher to surrounding environment, and measurement result is unstable, and measurement result generally can only be as a reference.In addition, fiber grating strain measuring system cost is higher.
Pressure transducer mensuration refers to installs a pressure transducer in advance at anchor rod pallet board place, directly measures anchor axial force by pressure transducer.This method measuring accuracy can ensure, but cost is higher, and the cost of single pressure sensor reaches unit up to ten thousand, can cause great waste if do not recycled, and the words of recovery then can cause anchor pole to lose efficacy, and threatens engineering safety.
First bolt deformation is passed to vibratory string by type vibration wire anchor ergometer, thus changes the vibration frequency of vibratory string.The distortion of vibratory string can be obtained by vibratory string frequency detecting, and then obtain the distortion of anchor pole, and then try to achieve the axle power of anchor pole.This method needs to be welded on anchor pole by the two ends of vibratory string in advance, not only complicated operation, and welding quality is difficult to ensure, but also considerably increases the installation difficulty of anchor pole.
Summary of the invention
The object of the invention is to the measurement measurement of anchor axial force being converted into displacement, thus reduce axle power measurement cost, a kind of load-displacement conversion equipment is provided.
Its technical solution is: a kind of load-displacement conversion equipment, it is characterized in that mainly comprising: profile iron, lower bolster and upper padding plate, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, have nonplanar structure, its peripheral shape is circular, and three-dimensional shape is bowl-type, its center is provided with hole, anchor pole can pass from this hole, and this profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole, along with profile iron load increases, it is crushed gradually, there is between profile iron load and the displacement of generation monotonically increasing relation, in normal direction, compression experiment is carried out to it by pressing machine, its load-displacement curve can be obtained; Described lower bolster and upper padding plate are surfacing, and pertusate steel plate is established at center, and anchor pole can pass from hole, the nut of anchor pole, upper padding plate, deformed steel and lower bolster close contact successively.
Ultimate principle of the present invention is: because the axle power directly measuring anchor pole is comparatively difficult, according to the relation between profile iron load of the present invention and the displacement of generation, the measurement of load is converted into the measurement of displacement; During skyhook, this device is arranged on outside anchor pole, before and after rockbolt stress, measures the vertical range between upper padding plate upper surface and lower bolster upper surface respectively, thus obtain the relative displacement of deformed steel pressurized generation; According to the load-displacement curve of deformed steel, can in the hope of its load, this load equals the axle power of anchor pole.
The invention has the beneficial effects as follows: the load-displacement conversion equipment that the application proposes, make anchor axial force measurement become simple, greatly reduce measurement cost, the dynamic feedback design of its support for engineering site is significant.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Fig. 1 is the principle schematic of load-displacement conversion equipment of the present invention;
Fig. 2 is the schematic top plan view of a kind of preferred implementation of described deformed steel;
Fig. 3 is the diagrammatic cross-section of Fig. 2 along MM face;
Fig. 4 is the one of the load-displacement curve of described load-displacement conversion equipment.
Embodiment
1-3 by reference to the accompanying drawings, a kind of load-displacement conversion equipment, is characterized in that mainly comprising: profile iron 1, lower bolster 2 and upper padding plate 3, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, has nonplanar structure, and its peripheral shape is circular, three-dimensional shape is bowl-type, its center is provided with hole S1, and anchor pole can pass from this hole, and this profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole, along with profile iron load increases, it is crushed gradually, has monotonically increasing relation between profile iron load and the displacement of generation, carries out compression experiment by pressing machine in normal direction to it, its load-displacement curve can be obtained, as shown in Figure 4; Described lower bolster and upper padding plate are surfacing, and pertusate steel plate is established at center, and anchor pole 4 can pass from hole, the nut 5 of anchor pole, upper padding plate 3, deformed steel 1, lower bolster 2 and country rock 6 close contact successively.
During skyhook, the load-displacement conversion equipment described in the application is arranged on outside anchor pole, before and after rockbolt stress, measures the vertical range L between upper padding plate upper surface and lower bolster upper surface respectively, thus obtain the relative displacement of deformed steel pressurized generation; According to the load-displacement curve of deformed steel, can in the hope of its load, this load equals the axle power of anchor pole.
The above embodiment, the just one of the embodiment that the present invention is more preferably concrete, the usual change that those skilled in the art carries out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (1)
1. a load-displacement conversion equipment, is characterized in that mainly comprising: profile iron, lower bolster and upper padding plate, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, have nonplanar structure, its peripheral shape is circular, and three-dimensional shape is bowl-type, its center is provided with hole, anchor pole can pass from this hole, and this profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole, along with profile iron load increases, it is crushed gradually, there is between profile iron load and the displacement of generation monotonically increasing relation, in normal direction, compression experiment is carried out to it by pressing machine, its load-displacement curve can be obtained; Described lower bolster and upper padding plate are surfacing, and pertusate steel plate is established at center, and anchor pole can pass from hole, the nut of anchor pole, upper padding plate, deformed steel and lower bolster close contact successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520067847.1U CN204439249U (en) | 2015-02-01 | 2015-02-01 | Load-displacement conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520067847.1U CN204439249U (en) | 2015-02-01 | 2015-02-01 | Load-displacement conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204439249U true CN204439249U (en) | 2015-07-01 |
Family
ID=53607102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520067847.1U Expired - Fee Related CN204439249U (en) | 2015-02-01 | 2015-02-01 | Load-displacement conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204439249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523008A (en) * | 2016-12-23 | 2017-03-22 | 山东科技大学 | anchor rod stress measuring reading warning device and usage method |
| CN106768564A (en) * | 2017-03-06 | 2017-05-31 | 山东科技大学 | A kind of multisection type anchor rod force-measuring device and application method |
-
2015
- 2015-02-01 CN CN201520067847.1U patent/CN204439249U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523008A (en) * | 2016-12-23 | 2017-03-22 | 山东科技大学 | anchor rod stress measuring reading warning device and usage method |
| CN106523008B (en) * | 2016-12-23 | 2023-07-21 | 山东科技大学 | Anchor rod stress measuring, reading and early warning device and use method |
| CN106768564A (en) * | 2017-03-06 | 2017-05-31 | 山东科技大学 | A kind of multisection type anchor rod force-measuring device and application 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: 20150701 Termination date: 20160201 |