CN212458737U - Pressure cell installation protection device in tunnel contact pressure monitoring - Google Patents
Pressure cell installation protection device in tunnel contact pressure monitoring Download PDFInfo
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- CN212458737U CN212458737U CN202020789015.1U CN202020789015U CN212458737U CN 212458737 U CN212458737 U CN 212458737U CN 202020789015 U CN202020789015 U CN 202020789015U CN 212458737 U CN212458737 U CN 212458737U
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Abstract
The utility model relates to a pressure cell installation protection device among tunnel contact pressure monitoring, including the base tray, bear the locating lever, bear the box, pressure cell and wire, establish the line hole on the base tray, the terminal surface is connected with bearing the locating lever under the base tray, bear the box and be the hollow columnar structure of "pi" font of invering, its terminal surface passes through the bolt and is connected with base tray up end down, the pressure cell inlays in bearing the box, side surface and bearing box lateral wall internal surface sliding connection, lead and inlay in bearing the locating lever, and its one end is connected with the pressure cell, the other end is located bears the locating lever outside. The novel tunnel overexcavation installation device effectively reduces the difficulty of installation construction operation, has flexible installation and positioning mode, accurate positioning, strong bearing capacity and difficult dislocation, and effectively solves the problem of tunnel overexcavation installation; on the other hand, the lateral acting force applied to the pressure box in the operation process is effectively reduced, and the tunnel pressure detection precision is improved.
Description
Technical Field
The utility model relates to an electric power cable, what certainly is a pressure cell installation protection device in tunnel contact pressure monitoring.
Background
In the modern tunnel construction process, the surrounding rock pressure and the contact pressure between linings are monitored, and the monitoring data are fed back to the design and construction to realize real-time dynamic management, so that the method becomes more and more popular and achieves good implementation effect. At present, the most common monitoring instrument in the measurement of the surrounding rock pressure is a pressure box, so how to quickly and conveniently install the pressure box and ensure the accuracy of the measured data of the pressure box becomes the key of dynamic management of tunnel construction.
There are two main types of pressure cell installations commonly used at present: firstly, directly welding the pressure box on the steel bar of the suspended net; secondly, a steel bar is anchored into the measuring point through drilling, and the pressure box is bound on the steel bar through an iron wire. These two methods, although commonly used, have a number of disadvantages: if a welding fixing mode is used, the calibration coefficient of the pressure box is changed due to high welding temperature, and inaccurate measurement is caused; binding with steel bars can cause dislocation under the impact of sprayed high-pressure concrete; the installation of the pressure box is influenced by the over-excavation phenomenon in the tunnel construction. In addition, the concrete around the pressure cell can generate lateral force to the side surface of the pressure cell in the process of solidification and hardening, so that the monitored pressure is negative under some conditions, and the accuracy of pressure monitoring data is seriously influenced.
Therefore, an installation protection device is needed to solve the problems in the installation process of the pressure cell, reduce the influence of concrete on the lateral stress of the pressure cell and improve the accuracy of measured data.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not enough just to aim at overcoming the aforesaid, provides a novel electric power cable wiring equipment. Compared with the traditional detection equipment, the novel detection equipment has the advantages of simple structure, convenience in operation and wide application range, on one hand, the difficulty of installation and construction operation is effectively reduced, the installation and positioning mode is flexible, the positioning is accurate, the bearing capacity is strong, the abnormal position is not easy to occur, and the problem of tunnel overexcavation installation is effectively solved; on the other hand receives the side direction effort in effectively reducing the pressure cell operation, when improving tunnel pressure detection precision, this neotype loss resistance ability of effectual improvement and effectual this neotype life that has prolonged.
In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:
a pressure box installation protection device in tunnel contact pressure monitoring comprises a base tray, a bearing positioning rod, a bearing box, a pressure box and a lead, wherein the base tray is of a circular plate-shaped structure, the lower end face of the base tray is connected with the bearing positioning rod and coaxially distributed, the bearing box is of an n-shaped column groove body structure, the lower end face of the bearing box is connected with and coaxial with the upper end face of the base tray through bolts, at least one wire passing hole which is vertically distributed with the axis of the base tray is formed in the side surface of the bearing box, the pressure box is embedded in the bearing box and coaxially distributed with the bearing box, the upper end face of the pressure box is 0-10 mm higher than the upper end face of the bearing box, the side surface of the pressure box is in sliding connection with the inner surface of the side wall of the bearing box, at least one lead.
Further, the terminal surface is established under the base tray and is born the boss with base tray coaxial distribution, bear the boss and establish the connection screw with base tray coaxial distribution to through connecting the screw with bear terminal surface connection before the locating lever, bear the tray up end and establish with base tray coaxial distribution and be closed annular structure's constant head tank, the constant head tank degree of depth is 1/4-3/4 of base tray thickness, just bear the box lower terminal surface and inlay in the constant head tank and through constant head tank and base tray interconnect.
Furthermore, the upper end surface of the positioning groove is additionally provided with a gland, and the gland is coated on the upper end surface of the positioning groove and abuts against the outer surface of the bearing box.
Furthermore, the lower end face of the pressure box is connected with the bottom of the bearing box through at least one disc spring, and the side surface of the pressure box is provided with at least one elastic sealing strip which is coaxially distributed with the pressure box and is in sliding connection with the inner surface of the side wall of the bearing box through the elastic sealing strip.
Furthermore, the outer surfaces of the bearing positioning rod and the bearing box are respectively provided with a connecting thread, and the upper end surface and the lower end surface of the bearing positioning rod and the bearing box are respectively provided with an elastic sealing end cover.
Furthermore, a positioning plate is additionally arranged on the bearing positioning rod, the positioning plate is coated outside the bearing positioning rod and coaxially distributed with the bearing positioning rod, the upper end face of the positioning plate is distributed in parallel with the lower end face of the base tray and connected through at least three adjusting bolts, the diameter of the positioning plate is 0.5-3 times of that of the lower end face of the base tray, the adjusting bolts are uniformly distributed around the axis of the bearing positioning rod and are parallelly distributed with the axis of the bearing positioning rod, each adjusting bolt is coated with a pre-tightening spring, the pre-tightening springs are coaxially distributed with the adjusting bolts, and two ends of each pre-tightening spring are respectively abutted against the upper end face of the positioning plate and the lower end face of the base tray.
Compared with the traditional detection equipment, the novel detection equipment has the advantages of simple structure, convenience in operation and wide application range, on one hand, the difficulty of installation and construction operation is effectively reduced, the installation and positioning mode is flexible, the positioning is accurate, the bearing capacity is strong, the abnormal position is not easy to occur, and the problem of tunnel overexcavation installation is effectively solved; on the other hand receives the side direction effort in effectively reducing the pressure cell operation, when improving tunnel pressure detection precision, this neotype loss resistance ability of effectual improvement and effectual this neotype life that has prolonged.
Drawings
Fig. 1 is a schematic view of the cross section of the present invention.
Detailed Description
As shown in fig. 1, a pressure cell installation protection device in tunnel contact pressure monitoring includes a base tray 1, a bearing positioning rod 2, a bearing box 3, a pressure cell 4 and a lead 5, wherein the base tray 1 is a circular plate structure, the lower end surface of the base tray 1 is connected with the bearing positioning rod 2 and coaxially distributed, the bearing box 3 is a n-shaped column groove structure, the lower end surface of the bearing box is connected with and coaxially distributed with the upper end surface of the base tray 1 through a bolt, the side surface of the bearing box is provided with at least one wire passing hole 6 vertically distributed with the axis of the bearing box, the pressure cell 4 is embedded in the bearing box 3 and coaxially distributed with the bearing box 3, the upper end surface of the pressure cell 4 is 0-10 mm higher than the upper end surface of the bearing box 3, the side surface is slidably connected with the inner surface of the side wall of the bearing box 3, one end of the lead 5 is connected with the pressure cell 4.
The bearing boss 17 coaxially distributed with the base tray 1 is arranged on the lower end face of the base tray 1, the connecting screw holes 16 coaxially distributed with the base tray 1 are formed in the bearing boss 17 and are connected with the front end face of the bearing positioning rod 2 through the connecting screw holes 16, the positioning grooves 7 coaxially distributed with the base tray and in a closed annular structure are formed in the upper end face of the bearing tray 1, the depth of each positioning groove 7 is 1/4-3/4 of the thickness of the base tray 1, and the lower end face of the bearing box 3 is embedded in each positioning groove 7 and is connected with the base tray 1 through the positioning grooves 7.
Further preferably, the upper end surface of the positioning groove 7 is additionally provided with a gland 8, and the gland 8 is coated on the upper end surface of the positioning groove 7 and abuts against the outer surface of the bearing box 3.
It should be noted that the lower end surface of the pressure cell 4 and the bottom of the load-bearing box 3 are connected with each other through at least one belleville spring 9, and at least one elastic sealing strip 10 which is coaxially distributed with the pressure cell 4 is arranged on the side surface of the pressure cell 4 and is in sliding connection with the inner surface of the side wall of the load-bearing box 3 through the elastic sealing strip 10.
In addition, the outer surfaces of the bearing positioning rod 2 and the bearing box 3 are respectively provided with a connecting thread 11, and the upper end surface and the lower end surface of the bearing positioning rod 2 and the bearing box 3 are respectively provided with an elastic sealing end cover 12.
Further preferably, a positioning plate 13 is additionally arranged on the bearing positioning rod 2, the positioning plate 13 is coated outside the bearing positioning rod 2 and coaxially distributed with the bearing positioning rod 2, the upper end face of the positioning plate 13 is distributed in parallel with the lower end face of the base tray 1 and is connected with the lower end face of the base tray 1 through at least three adjusting bolts 14, the diameter of the positioning plate 13 is 0.5-3 times of that of the lower end face of the base tray 1, the adjusting bolts 14 are uniformly distributed around the axis of the bearing positioning rod 2 and are distributed in parallel with the axis of the bearing positioning rod 2, each adjusting bolt 14 is coated with a pre-tightening spring 15, the pre-tightening springs 15 and the adjusting bolts 14 are coaxially distributed, and two ends of each pre-tightening spring 15 and two ends of each pre.
In the concrete implementation of the novel method, the following steps are carried out:
(1) a batch of base trays and bearing positioning rods which are adaptive to the pressure boxes can be pre-customized, wherein the length of the bearing positioning rods can be selected according to the excavation condition of the surrounding rock 101 at the measuring point position and the vertical frame condition of the grid steel frame 102;
(2) connecting the bearing positioning rod and the base tray together, wherein the bearing positioning rod and the base tray can be directly connected through threads during connection, or after the threaded connection is completed, the positioning support piece and the base tray are welded, then the bearing box and the front end face of the bearing box are connected, and the bearing box connecting structure is subjected to reinforced positioning through a gland;
(3) connecting the pressure box with a lead, then placing the pressure box in a bearing box, connecting and positioning the pressure box with the bearing box through a disc spring and an elastic sealing strip, finally penetrating the pressure box connecting lead into a bearing positioning rod through a wire passing hole, extending out of the tail end of the bearing positioning rod, and respectively sealing and protecting the end faces of the bearing box and the bearing positioning rod through an elastic sealing end cover;
(4) grinding the position of the surrounding rock 101 needing pressure measurement to be flat, enabling a pressure box to be closely attached to the surrounding rock 101, then connecting a base tray and a bearing positioning rod with the grid steel frame 102 on the outer side of the surrounding rock 101 needing pressure measurement, directly connecting the base tray and the bearing positioning rod through threads on the outer side of the bearing positioning rod during connection, connecting the base tray and the bearing positioning rod through welding, riveting and the like, finally connecting a positioning plate coated outside the bearing positioning rod through an adjusting bolt, and enabling the base tray and the positioning plate to be coated on the front surface and the rear surface of the grid steel frame 102 respectively, so that the novel reinforced positioning is realized;
wherein when carrying out this novel installation location, the central connecting line of guaranteeing to bear locating lever, pressure cell is perpendicular with the tangent plane of country rock contact point department, draws forth and is connected with outside monitored control system the wire from bearing the locating lever afterwards, carry on at last spray concrete operation and data monitoring can.
Compared with the traditional detection equipment, the novel detection equipment has the advantages of simple structure, convenience in operation and wide application range, on one hand, the difficulty of installation and construction operation is effectively reduced, the installation and positioning mode is flexible, the positioning is accurate, the bearing capacity is strong, the abnormal position is not easy to occur, and the problem of tunnel overexcavation installation is effectively solved; on the other hand receives the side direction effort in effectively reducing the pressure cell operation, when improving tunnel pressure detection precision, this neotype loss resistance ability of effectual improvement and effectual this neotype life that has prolonged.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a pressure cell installation protection device among tunnel contact pressure monitoring which characterized in that: the device for installing and protecting the pressure box in the tunnel contact pressure monitoring comprises a base tray, a bearing positioning rod, a bearing box, the pressure box and a lead, wherein the base tray is of a circular plate-shaped structure, the lower end face of the base tray is connected with the bearing positioning rod and coaxially distributed, the bearing box is of an n-shaped groove body structure, the lower end face of the bearing box is connected with and coaxial with the upper end face of the base tray through bolts, at least one wire passing hole which is vertically distributed with the axis of the base tray is formed in the side surface of the bearing box, the pressure box is embedded in the bearing box and coaxially distributed with the bearing box, the upper end face of the pressure box is 0-10 mm higher than the upper end face of the bearing box, the side surface of the pressure box is in sliding connection with the inner surface of the side wall of the bearing box, at least one lead is.
2. The pressure cell installation protection device in tunnel contact pressure monitoring of claim 1, wherein: the terminal surface establishes the boss that bears with base tray coaxial distribution under the base tray, bear the boss and establish the connection screw with base tray coaxial distribution to through connecting the screw with bear terminal surface connection before the locating lever, base tray up end establishes the constant head tank that is closed annular structure with base tray coaxial distribution, the constant head tank degree of depth is 1/4-3/4 of base tray thickness, just bear the box down the terminal surface and inlay in the constant head tank and through constant head tank and base tray interconnect.
3. The pressure cell installation protection device in tunnel contact pressure monitoring of claim 2, wherein: the upper end surface of the positioning groove is additionally provided with a gland, and the gland is coated on the upper end surface of the positioning groove and is propped against the outer surface of the bearing box.
4. The pressure cell installation protection device in tunnel contact pressure monitoring of claim 1, wherein: the lower end face of the pressure box is connected with the bottom of the bearing box through at least one disc spring, and the side surface of the pressure box is provided with at least one elastic sealing strip which is coaxially distributed with the pressure box and is in sliding connection with the inner surface of the side wall of the bearing box through the elastic sealing strip.
5. The pressure cell installation protection device in tunnel contact pressure monitoring of claim 1, wherein: the outer surfaces of the bearing positioning rod and the bearing box are respectively provided with a connecting thread, and the upper end surface and the lower end surface of the bearing positioning rod and the bearing box are respectively provided with an elastic sealing end cover.
6. The pressure cell installation protection device in tunnel contact pressure monitoring of claim 1, wherein: the bearing positioning rod is additionally provided with a positioning plate, the positioning plate is coated outside the bearing positioning rod and coaxially distributed with the bearing positioning rod, the upper end face of the positioning plate is parallelly distributed with the lower end face of the base tray and is connected with the lower end face of the base tray through at least three adjusting bolts, the diameter of the positioning plate is 0.5-3 times of that of the lower end face of the base tray, the adjusting bolts are uniformly distributed around the axis of the bearing positioning rod and are parallelly distributed with the axis of the bearing positioning rod, each adjusting bolt is coated with a pre-tightening spring, the pre-tightening springs are coaxially distributed with the adjusting bolts, and the two ends of the pre-tightening springs are respectively abutted against the upper end face of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020789015.1U CN212458737U (en) | 2020-05-13 | 2020-05-13 | Pressure cell installation protection device in tunnel contact pressure monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020789015.1U CN212458737U (en) | 2020-05-13 | 2020-05-13 | Pressure cell installation protection device in tunnel contact pressure monitoring |
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| Publication Number | Publication Date |
|---|---|
| CN212458737U true CN212458737U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020789015.1U Active CN212458737U (en) | 2020-05-13 | 2020-05-13 | Pressure cell installation protection device in tunnel contact pressure monitoring |
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| CN (1) | CN212458737U (en) |
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- 2020-05-13 CN CN202020789015.1U patent/CN212458737U/en active Active
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