CN202788894U - Prestressing force measuring anchor stock - Google Patents
Prestressing force measuring anchor stock Download PDFInfo
- Publication number
- CN202788894U CN202788894U CN 201220314951 CN201220314951U CN202788894U CN 202788894 U CN202788894 U CN 202788894U CN 201220314951 CN201220314951 CN 201220314951 CN 201220314951 U CN201220314951 U CN 201220314951U CN 202788894 U CN202788894 U CN 202788894U
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- CN
- China
- Prior art keywords
- resistance strain
- anchor
- prestressing force
- anchor stock
- stock
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- 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)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a prestressing force measuring anchor stock which comprises an anchor stock body, a nut, a tray, resistance strain sensors, a resistance strain gauge, guide lines, a measuring interface, a protective outer shell and an end cover. Longitudinal grooves are arranged in two sides of the anchor stock body. The resistance strain sensors are mounted in the longitudinal grooves. The resistance strain sensors are connected with the measuring interface and the resistance strain gauge in sequence through the guide lines. The measuring interface is mounted in the protective outer shell which is welded at one end of the anchor stock body. The end cover is covered on the protective outer shell. Threads are arranged on a stock body of one end, welded with the protective outer shell, of the anchor stock, and the nut and the tray are assembled on a portion, provided with the threads, of the stock body. The prestressing force measuring anchor stock has the advantages of being convenient to install and easy to operate. The prestressing force measuring anchor stock can be widely applied to the prestressing force anchor stock stress measurement of the fields of underground projects such as water conservancy, transportation and mines.
Description
Technical field
The utility model relates to a kind of device for measuring force, particularly a kind of prestressing force force-measuring anchor stock for geotechnical engineering fields such as mines.
Background technology
Anchor pole is widely used in the geotechnical engineering fields such as coal roadway support, slope reinforcement, tunnel support, in order to study the mechanism of action and the problem such as stressing conditions of anchor pole in above-mentioned engineering, utility model force-measuring anchor stock and in Practical Project, obtain widely applying, it can be used for verifying optimal design parameter, improves the research of construction technology or failure mechanism etc.It is 02255332.0 patent such as application number, a kind of direct-reading tension-measuring anchor rod is disclosed, can't apply prestressing force in actual use, can not truly reflect the actual loading environment of prestressed anchor in the engineering, thereby can't carry out monitoring analysis to the stress of prestressed anchor.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of prestressed force-measuring anchor stock that applies simple in structure, easy to use is provided.
For achieving the above object, the utility model adopts following technical proposals:
A kind of prestressing force force-measuring anchor stock comprises that anchor pole, nut, pallet, resistance strain sensor, resistance strain gauge, wire, measurement interface, protecting sheathing, end cap form; Described anchor pole both sides are provided with longitudinal fluting; In the described groove resistance strain sensor is installed; Described resistance strain sensor is connected with measurement interface by wire, and described measurement interface is connected with resistance strain gauge by wire; Described measurement interface is installed in the protecting sheathing; Described protecting sheathing is welded on anchor pole one end; Described end cap covers on protecting sheathing; Described anchor pole is welded with on the body of rod of an end of protecting sheathing and is provided with screw thread, and body of rod threaded section is equipped with nut and pallet.
In use, measurement interface is connected with resistance strain gauge, obtains the resistance strain sensor initial value by resistance strain gauge; Then force-measuring anchor stock is placed in the boring of rock mass, and is fixed in the rock mass by Anchor Agent; Rotating nut applies prestressing force to anchor pole, the torque that applies in the prefastening torque size simulation Practical Project, resistance strain gauge reading after the record prestress application is finished, according to the Laboratory Calibration result and apply strain value before and after the prestressing force, thereby the axial force that measures anchor pole obtains in the engineering prestress application situation of anchor pole under the existence conditions; Simultaneously, periodic monitor in work progress by the strain variation value of measuring resistance strain transducer and according to calibration result, obtains the load of prestressed anchor in work progress and changes.
When real work, the anchor pole model is selected according to the engineering actual conditions, and it is consistent with used anchor pole model in the engineering.
The utility model with respect to the advantage of prior art is:
(1) easy for installation, the easy operating of the utility model can be widely used in the underground engineering field such as water conservancy, traffic, mine;
(2) the utility model according to the actual identical anchor pole of model of selecting of engineering as the body of rod, rather than simple use screw-thread steel, make that used anchor pole has identical physico-mechanical properties in force-measuring anchor stock and the engineering, the data of surveying more can reflect really the stressing conditions of other anchor pole in the engineering;
(3) the utility model possesses and applies prestressed function, can make the prestressed anchor that uses in force-measuring anchor stock and the engineering be in identical force environment, can monitor the prestress application situation of anchor pole under the existence conditions in the engineering and prestressed anchor loss of prestress and stressed size etc. in use, this is that prior art can't realize.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model embodiment.
Fig. 2 is the use schematic diagram of the utility model embodiment.
Marginal data: 1-anchor pole; 2-nut; 3-pallet; 4-resistance strain sensor; 5-wire; 6-measurement interface; 7-protecting sheathing; 8-end cap; 9-resistance strain gauge; 10-Anchor Agent; 11-boring.
The specific embodiment
Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further details.
With reference to accompanying drawing 1 and accompanying drawing 2, a kind of prestressing force force-measuring anchor stock comprises anchor pole 1, nut 2, pallet 3, resistance strain sensor 4, resistance strain gauge 9, wire 5, measurement interface 6, protecting sheathing 7, end cap 8; Described anchor pole 1 both sides are provided with longitudinal fluting; Resistance strain sensor 4 is installed in the described longitudinal fluting; Described resistance strain sensor 4 is connected with measurement interface 6 by wire 5, and described measurement interface 6 is connected connection by wire with resistance strain gauge; Described measurement interface 6 is installed in the protecting sheathing 7; Described protecting sheathing 7 is welded on anchor pole 1 one ends; Described end cap 8 covers on protecting sheathing 7; Described anchor pole 1 is welded with on the body of rod of an end of protecting sheathing 7 and is provided with screw thread, and body of rod threaded section is equipped with nut 2 and pallet 3.
In use, measurement interface 6 is connected with resistance strain gauge 9, obtains resistance strain sensor 4 initial values by resistance strain gauge 9; Then the prestressing force force-measuring anchor stock is placed in the boring 11 of rock mass, and is fixed in the rock mass by Anchor Agent 10; 2 pairs of anchor poles 1 of rotating nut apply prestressing force, the torque that applies in the prefastening torque size simulation Practical Project, resistance strain gauge 9 readings after the record prestress application is finished, according to the Laboratory Calibration result and apply strain value before and after the prestressing force, thereby the axial force that measures anchor pole 1 obtains in the engineering prestress application situation of anchor pole under the existence conditions; Simultaneously, periodic monitor in work progress by the strain variation value of measuring resistance strain transducer 4 and according to calibration result, obtains the load of prestressed anchor in work progress and changes.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its Spirit Essence or essential feature.Therefore, with regard to each side, all just illustrating, is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (1)
1. a prestressing force force-measuring anchor stock is characterized in that: comprise anchor pole, nut, pallet, resistance strain sensor, resistance strain gauge, wire, measurement interface, protecting sheathing, end cap; Described anchor pole both sides are provided with longitudinal fluting; In the described groove resistance strain sensor is installed; Described resistance strain sensor is connected with measurement interface by wire, and described measurement interface is connected with resistance strain gauge by wire; Described measurement interface is installed in the protecting sheathing; Described protecting sheathing is welded on anchor pole one end; Described end cap covers on protecting sheathing; Described anchor pole is welded with on the body of rod of an end of protecting sheathing and is provided with screw thread, and body of rod threaded section is equipped with nut and pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314951 CN202788894U (en) | 2012-06-29 | 2012-06-29 | Prestressing force measuring anchor stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314951 CN202788894U (en) | 2012-06-29 | 2012-06-29 | Prestressing force measuring anchor stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788894U true CN202788894U (en) | 2013-03-13 |
Family
ID=47816169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314951 Expired - Fee Related CN202788894U (en) | 2012-06-29 | 2012-06-29 | Prestressing force measuring anchor stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788894U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704972A (en) * | 2012-06-29 | 2012-10-03 | 山东大学 | Prestress measuring anchor rod and using method |
| CN106968696A (en) * | 2017-04-21 | 2017-07-21 | 中国矿业大学 | A kind of anchor pole packing ring changed colour at various pressures and its application method |
| CN109339842A (en) * | 2018-11-13 | 2019-02-15 | 重庆大学 | A kind of liquid metal sensor and the large deformation anchor rod using the sensor monitoring and warning |
| CN112986396A (en) * | 2021-03-04 | 2021-06-18 | 中国建筑第八工程局有限公司 | Protection device and protection method for ultrasonic detector emitter |
-
2012
- 2012-06-29 CN CN 201220314951 patent/CN202788894U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704972A (en) * | 2012-06-29 | 2012-10-03 | 山东大学 | Prestress measuring anchor rod and using method |
| CN102704972B (en) * | 2012-06-29 | 2015-06-10 | 山东大学 | Prestress measuring anchor rod and using method |
| CN106968696A (en) * | 2017-04-21 | 2017-07-21 | 中国矿业大学 | A kind of anchor pole packing ring changed colour at various pressures and its application method |
| CN106968696B (en) * | 2017-04-21 | 2019-02-19 | 中国矿业大学 | A kind of anchor pole washer to change colour at various pressures and its application method |
| CN109339842A (en) * | 2018-11-13 | 2019-02-15 | 重庆大学 | A kind of liquid metal sensor and the large deformation anchor rod using the sensor monitoring and warning |
| CN109339842B (en) * | 2018-11-13 | 2024-02-20 | 重庆大学 | Liquid metal sensor and large-deformation anchor rod using same for monitoring and early warning |
| CN112986396A (en) * | 2021-03-04 | 2021-06-18 | 中国建筑第八工程局有限公司 | Protection device and protection method for ultrasonic detector emitter |
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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: 20130313 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |