CN202304738U - Displacement warning device - Google Patents
Displacement warning device Download PDFInfo
- Publication number
- CN202304738U CN202304738U CN201120330441XU CN201120330441U CN202304738U CN 202304738 U CN202304738 U CN 202304738U CN 201120330441X U CN201120330441X U CN 201120330441XU CN 201120330441 U CN201120330441 U CN 201120330441U CN 202304738 U CN202304738 U CN 202304738U
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- China
- Prior art keywords
- probe
- displacement
- friction
- warning device
- alarm
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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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Abstract
The utility model discloses a displacement warning device, which comprises a probe, a friction box and a warning device, wherein the upper end of the probe is vertically inserted into the top wall of a roadway, the middle part of the probe is arranged in the friction box, a horizontal metal plate is arranged under the probe, the friction generated by a friction body arranged in the friction box on the probe is greater than the gravity of the probe, a power supply loop conducted through the contact of the probe and the metal plate is arranged between the probe and the metal plate, and the warning device is arranged on the power supply loop. The displacement warning device provided by the utility model can be used for determining the secondary support protection time after the primary support protection of expansion soft rock roadways, the in-site observation by personnel is not needed, the displacement warning device is more practicable than the engineering analog method, different warning displacements can be designed for surround rock with different rock performance, or the secondary support protection can be carried out according to velocity sensor measurement results, the displacement warning device can also be used for side slope stability analysis, the structure is simple, and the detection is convenient.
Description
Technical field
The utility model relates to the tunnel warning device.
Background technology
Swelling property soft rock rock mass strength is low, and the excavation back produces tangible plasticity and expansion displacement, to the tunnel distortion of extruding property takes place from all directions, produces huge displacement and pressure, finally causes Roadway damage.Can not coordinate mutually to reach when stablizing when the distortion of supporting itself and surrouding rock deformation, the destruction of just having caused supporting should be selected suitable support rigidity.Country rock constantly releases energy in the process of distortion, and country rock itself (even soft rock) has very strong load-bearing capacity, in case the distortion of country rock has surpassed a certain limit, loose damage will take place, and required supporting drag also increases severely, so want in good time supporting.The confidential convergent deformation that makes country rock that is chosen in is controlled within the maximum displacement that still keeps under the plastic-elastic stress state during supporting, but at present the control on technology opportunity to this is not accurate enough, has caused great potential safety hazard.
The utility model content
The utility model technical matters to be solved just provides displacement alarm a kind of simple in structure, easy to detect, detects the distortion situation of country rock, in time reports to the police to carry out secondary supporting, eliminates safe hidden trouble.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of displacement alarm; It is characterized in that: comprise a probe, a friction box, an alarm, the vertical tunnel roof that inserts in probe upper end, the probe middle part is located in the friction box; The probe below is provided with a horizontal metal plate; Friction piece in the friction box is bigger than probe gravity to the size of the friction force that probe produces, and is provided with one between probe and sheet metal and is contacted with sheet metal and the electric power loop connected by probe, and alarm is located on the electric power loop.
As preferably, said probe bottom also connects a speed inductor.
As preferably, said alarm is connected with the pulpit through wired mode, and said speed inductor is connected with the pulpit through wired mode, dynamically shows surrounding rock displacement speed in the pulpit.
As preferably, said friction box, sheet metal, alarm, speed inductor all are located in the outer box.
As preferably, said outer box is provided with the rule of the vertical increase and decrease of a scale value in sheet metal one side, and the sheet metal upper-lower position can be adjusted up and down along rule.
The utility model displacement alarm can be used for confirming the secondary supporting time after the preliminary bracing of swelling property soft-rock tunnel; Do not need staff's field observation, more meet reality, for the country rock of different lithology than engineering analog method; Can design different alarm displacements; Or carry out secondary supporting according to speed sensor measurement result, and also can be used for the stability analysis of side slope, simple in structure, easy to detect.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1, be the embodiment of a kind of displacement alarm of the utility model, comprise a probe 1, a friction box 2, an alarm 4; The vertical tunnel roof 8 that inserts in probe upper end; The probe middle part is located in the friction box, and the probe below is provided with a horizontal metal plate 3, and the friction piece in the friction box is bigger than probe gravity to the size of the friction force that probe produces; Be provided with one between probe and sheet metal and contacted with sheet metal and the electric power loop connected by probe, alarm 1 is located on the electric power loop.Said probe bottom also connects a speed inductor 6.Said alarm is connected with the pulpit through wired mode, and said speed inductor is connected with the pulpit through wired mode, dynamically shows surrounding rock displacement speed.Said friction box, sheet metal, alarm, speed inductor all are located in the outer box 7.Said outer box is provided with the vertical rule 71 that increases and decreases of a scale value in sheet metal one side, and the sheet metal upper-lower position can be adjusted up and down along rule.
(1) friction box.The size of the friction force in the friction box is bigger than probe gravity, but unsuitable excessive, and requirement can stop probe landing and can stationary probe squinting about not under action of gravity to get final product.
(2) speed inductor.The rate travel of measuring probe reflects surrounding rock displacement speed, and it dynamically imports the pulpit into through first signal wire 5, shows surrounding rock displacement speed.
(3) alarm.When surrouding rock deformation occurred to the setting scale, probe contacted with sheet metal, and power connection sends the supporting alarm, and alarm signal is imported the pulpit into by secondary signal line 51, and chimes of doom also can be heard in the monitoring scene.
The displacement alarm should be taken a sample, the simulated field stressing conditions before using, and experimentized, and measured the deformation characteristic of country rock, displacement calculating etc., and according to the actual conditions adjustment, revise the alarm displacement, promptly realize through adjusting sheet metal up and down.
Claims (5)
1. displacement alarm; It is characterized in that: comprise a probe (1), a friction box (2), an alarm (4), the vertical tunnel roof (8) that inserts in probe upper end, the probe middle part is located in the friction box (2); The probe below is provided with a horizontal metal plate (3); Friction piece in the friction box is bigger than probe gravity to the size of the friction force that probe produces, and is provided with one between probe and sheet metal and is contacted with sheet metal and the electric power loop connected by probe, and alarm (1) is located on the electric power loop.
2. displacement alarm according to claim 1 is characterized in that: said probe (1) bottom also connects a speed inductor (6).
3. displacement alarm according to claim 2 is characterized in that: said alarm (4) is connected with the pulpit through wired mode, and said speed inductor (6) is connected with the pulpit through wired mode, dynamically shows surrounding rock displacement speed in the pulpit.
4. displacement alarm according to claim 3 is characterized in that: said friction box, sheet metal, alarm, speed inductor all are located in the outer box (7).
5. displacement alarm according to claim 4 is characterized in that: said outer box is provided with the vertical rule (71) that increases and decreases of a scale value in sheet metal one side, and the sheet metal upper-lower position can be adjusted up and down along rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120330441XU CN202304738U (en) | 2011-09-05 | 2011-09-05 | Displacement warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120330441XU CN202304738U (en) | 2011-09-05 | 2011-09-05 | Displacement warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304738U true CN202304738U (en) | 2012-07-04 |
Family
ID=46373618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120330441XU Expired - Fee Related CN202304738U (en) | 2011-09-05 | 2011-09-05 | Displacement warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304738U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435130A (en) * | 2011-09-05 | 2012-05-02 | 山东中宏路桥建设有限公司 | Displacement alarm |
| CN108692649A (en) * | 2018-08-02 | 2018-10-23 | 魏乐见 | A kind of relative displacement sensing device |
| CN109253690A (en) * | 2017-07-11 | 2019-01-22 | 保时捷股份公司 | For recognizing the sensor and method of the mechanically deform of charging column shell |
-
2011
- 2011-09-05 CN CN201120330441XU patent/CN202304738U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435130A (en) * | 2011-09-05 | 2012-05-02 | 山东中宏路桥建设有限公司 | Displacement alarm |
| CN109253690A (en) * | 2017-07-11 | 2019-01-22 | 保时捷股份公司 | For recognizing the sensor and method of the mechanically deform of charging column shell |
| CN109253690B (en) * | 2017-07-11 | 2020-08-14 | 保时捷股份公司 | Sensor and method for detecting mechanical deformations of a charging column housing |
| CN108692649A (en) * | 2018-08-02 | 2018-10-23 | 魏乐见 | A kind of relative displacement sensing device |
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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: 20120704 Termination date: 20170905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |