CN212779684U - Structural stress sensing device - Google Patents
Structural stress sensing device Download PDFInfo
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- CN212779684U CN212779684U CN202022063467.4U CN202022063467U CN212779684U CN 212779684 U CN212779684 U CN 212779684U CN 202022063467 U CN202022063467 U CN 202022063467U CN 212779684 U CN212779684 U CN 212779684U
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Abstract
The utility model provides a structural stress perception device contains lead power cable (1), leads power cable anchor (11) and leads power cable fastener (12), its characterized in that: one end of the force guide cable (1) is connected with the force guide cable anchor (11), and the other end of the force guide cable (1) is connected with the force guide cable fastener (12); at least one stress sensor (2) and at least one force guiding pad (14) are arranged between the force guiding cable anchor (11) and the force guiding cable fastener (12); the force-guiding mat (14) transmits structural stresses to the force-guiding cable (1), and the force-guiding cable (1) transmits the structural stresses to the stress sensor (2). The structure is succinct, and is with low costs, and the suitability is strong.
Description
Technical Field
The utility model relates to a structural stress measures the field, especially relates to a structural stress perception device.
Background
The structural member stress measurement is a content of bridge and building safety detection, and is also a technical means for preventing geological disasters.
At present, various technical means can realize deformation measurement, such as an optical fiber measurement technology, an optical video measurement technology, a millimeter wave radar measurement technology and a navigation satellite positioning technology.
In the field of patent applications, the following deformation measurement techniques are disclosed:
the device disclosed by the invention is CN201820657423.4, and the invention name is a high-precision ground crack tension deformation monitoring device, and comprises a cross beam which is horizontally and transversely arranged, wherein the middle part of the cross beam is provided with a Z-shaped cutting seam and is divided into a monitoring section and a monitoring section, a transverse main ruler which is transversely arranged is fixed at the end position of the monitoring section, a transverse auxiliary ruler is transversely and slidably connected with the transverse main ruler, and the transverse main ruler and the transverse auxiliary ruler are provided with equal division scales with different division degrees so as to form a transverse vernier caliper; and a vertical sliding mechanism and a longitudinal sliding mechanism are connected between the transverse auxiliary ruler and the monitoring two sections.
The device disclosed by the invention is CN201721625818.8 and is named as a bridge deformation monitoring radar sensor, and comprises a mounting bracket and a sensor case, wherein a transmitting antenna and a receiving antenna are arranged on one side of the sensor case, and the sensor case is rotatably arranged on the mounting bracket so as to enable the pitch angles of the transmitting antenna and the receiving antenna to be adjustable; the sensor case is internally provided with a measuring unit, the measuring unit comprises a modulation signal source, a power amplifier, a coupler, a low-noise amplifier, a frequency mixer, a low-pass filter and an analog-to-digital converter, the output end of the modulation signal source is connected with the power amplifier, the power amplifier is connected with a transmitting antenna through the coupler and is also connected with one port of the frequency mixer through the coupler, the output end of a receiving antenna is connected with the other port of the frequency mixer through the low-noise amplifier, the output port of the frequency mixer is sequentially connected with the low-pass filter and the analog-to-digital converter, and the analog-.
The device disclosed by the invention is CN201611071126.3 with the name of 'a big-span bridge deformation real-time monitoring method based on the Beidou system' comprises data acquisition; data processing: the cloud computing data center sequentially performs differential processing and filtering processing on the original data based on a cloud computing environment, real-time resolving of the original data is achieved, resolved bridge deformation data are obtained, and the original data and the resolved bridge deformation data are respectively stored in a database; and (4) data storage and management. When the bridge deformation is abnormal, the Beidou positioning system is used for accurately picking up some local and overall parameters of the structure in real time and identifying the characteristics of the structure different from the normal state so as to determine the position and relative degree of damage and make evaluation and early warning; and through long-term observation of the deformation sensitive characteristic quantity, the evolution rule of the performance degradation of the bridge is mastered so as to deploy corresponding improvement measures and prolong the service life of the bridge.
The existing structural stress monitoring technology has at least one of the defects of poor deformation detection precision, complex layout and construction, poor scene universality and incapability of predicting deformation.
The utility model provides a structural stress perception device for the deformation that overcomes prior art existence detects the precision poor, lays that the construction is loaded down with trivial details, the scene commonality is poor and be difficult to discover at least one in these shortcomings of structural component deformation in early stage.
Disclosure of Invention
The utility model provides a structural stress perception device for the deformation that overcomes prior art existence detects the precision poor, lays that the construction is loaded down with trivial details, the scene commonality is poor and be difficult to discover at least one in these shortcomings of structural component deformation in early stage.
The utility model provides a device contains power cable (1), power cable anchor (11) and power cable fastener (12), its characterized in that lead:
one end of the force guide cable (1) is connected with the force guide cable anchor (11), and the other end of the force guide cable (1) is connected with the force guide cable fastener (12);
at least one stress sensor (2) and at least one force guiding pad (14) are arranged between the force guiding cable anchor (11) and the force guiding cable fastener (12);
the force-guiding mat (14) transmits structural stresses to the force-guiding cable (1), and the force-guiding cable (1) transmits the structural stresses to the stress sensor (2).
The utility model discloses a structural stress perception device that embodiment mode provided, the deformation that can overcome prior art existence detects the precision poor, lay the loaded down with trivial details, the scene commonality is poor and be difficult to discover at least one in these shortcomings of structural component deformation in early stage. The structure is succinct, and is with low costs, and the suitability is strong.
Other features and advantages of the present invention will be set forth in the description that follows.
Drawings
Fig. 1 is a schematic view of a structural stress sensing device according to an embodiment of the present invention;
fig. 2 is a schematic view of a structural stress sensing device using a side force guiding pad according to an embodiment of the present invention;
fig. 3 is a schematic view of a structural stress sensing device coupled to a force-guiding cable support according to an embodiment of the present invention;
fig. 4 is a schematic layout view of an external structural stress sensing device according to an embodiment of the present invention;
fig. 5 is a schematic view of a layout of a built-in structural stress sensing device according to an embodiment of the present invention.
In the figure, 1, a force guide cable; 2. a stress sensor; 3. a lead cable support; 4. 8, a structural beam, a wireless receiver;
11. a guide cable anchor; 12. a lead cable fastener;
121. a screw; 122. a nut;
14. a force guide pad;
21. a stress measurement and communication module;
41. an inner hole of the structural beam;
81. a wireless receiver antenna.
Detailed Description
The utility model provides a structural stress perception device for the deformation that overcomes prior art existence detects the precision poor, lays that the construction is loaded down with trivial details, the scene commonality is poor and be difficult to discover at least one in these shortcomings of structural component deformation in early stage.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following describes the composition and operation of the present invention with reference to the accompanying drawings.
Example I A structural stress sensing device
The utility model provides a pair of structural stress perception device, see fig. 1 and fig. 2 and show, contain lead power cable (1), lead power cable anchor (11) and lead power cable fastener (12), its characterized in that:
one end of the force guide cable (1) is connected with the force guide cable anchor (11), and the other end of the force guide cable (1) is connected with the force guide cable fastener (12);
at least one stress sensor (2) and at least one force guiding pad (14) are arranged between the force guiding cable anchor (11) and the force guiding cable fastener (12);
the force-guiding mat (14) transmits structural stresses to the force-guiding cable (1), and the force-guiding cable (1) transmits the structural stresses to the stress sensor (2).
Specifically, the force guide cable (1) is a cable-shaped, chain-shaped, belt-shaped or strip-shaped component.
The force guide cable (1) is made of metal or nonmetal materials;
the metal material comprises aluminum, steel, iron, or an alloy;
the non-metallic material comprises nylon, plastic or non-metallic composite material.
The length of the force guide cable (1) is determined according to a specific application scene, and generally, the length of one force guide cable (1) ranges from 1 meter to 1000 meters.
The force guide cable (1) is any one of a cylinder, a curved surface cylinder and a polygonal cylinder.
Preferably, the force-guiding rope (1) is any one of a steel rope, a steel bar and a steel belt.
The device provided by the embodiment is characterized in that:
the force guiding pad (14) arranged on the force guiding cable (1) is a lantern ring with a through hole or a supporting piece with a limiting notch;
when the force guide pad (14) is a lantern ring with through holes, the force guide cable (1) penetrates through the lantern ring, the outer surface of the lantern ring is in contact with the structural part, and the deformation stress of the structural part is transferred to the force guide cable (1);
when the force guide pad (14) is a side-mounted support member with a limiting notch, the force guide cable (1) penetrates through the limiting notch, and the end face of the side-mounted support member with the limiting notch is in contact with the structural member and transmits the deformation stress of the structural member to the force guide cable (1).
Specifically, the deformation stress of the structural part is transmitted to a force guide pad (14) in contact with the structural part, the force guide pad (14) transmits the deformation stress of the structural part to a force guide cable (1), and the force guide cable (1) transmits the stress to a stress sensor (2).
The side-mounted supporting piece with the limiting notch is arranged on one side of the force guide cable (1) as shown in fig. 2, and the side of the limiting notch is used for supporting the force guide cable (1) and transmitting the deformation stress of the structural part to the force guide cable (1); the other side is extruded or fixed on the structural beam (4).
The end face or the surface of the force guide pad (14) which is in contact with the structural part is positioned on the surface of the structural part in an attached mode; or
The end face or surface of the force-guiding pad (14) that contacts the structural member is fixed to the structural member by any one of embedding, snapping, bonding, riveting, welding and screwing.
The device provided by the embodiment is characterized in that:
the force-guiding cable fastener (12) comprises a screw (121) and a nut (122), and the nut (122) presses the stress sensor (2) directly or through a gasket.
The device provided by the embodiment is characterized in that:
the stress sensor (2) is electrically connected with the stress measurement and communication module (21); or
An electrical connection and a structural link exist between the stress sensor (2) and the stress measurement and communication module (21).
In this embodiment, the stress sensor (2) is electrically connected to the stress measurement and communication module (21), as shown in fig. 1 and fig. 2, the stress measurement and communication module (21) processes the electrical parameter, which is output by the stress sensor (2) and changes with stress, and sends the processed data to the wireless receiver antenna (81) through a wireless channel, and the wireless receiver (8) sends the data to a computer server on the network side.
The stress sensor (2) is a resistance type or capacitance type sensor;
in particular, the resistive sensor includes a resistive strain gauge or a resistive strain film.
The resistance strain gauge is arranged on the strain beam, and when the strain beam deforms under stress, resistance wires contained in the resistance strain gauge are elongated to increase the resistance value of the resistance strain gauge.
The resistance strain film is directly manufactured on the strain beam, and when the strain beam deforms under stress, resistance wires contained in the resistance strain film are stretched to increase the resistance value of the resistance strain film.
The resistance strain film is directly manufactured on the strain beam, and the method comprises the step of evaporating the strain beam by using a film coating process to manufacture an insulating film and a resistance wire.
The capacitive sensor comprises a micro-motion capacitive sheet which is pulled by a guide cable (1) to generate displacement or rotation, so that the capacitance value of the capacitive sensor is changed, the change of the capacitance value causes the change of the oscillation frequency of an oscillator using the capacitor, and the change of stress is estimated by measuring the frequency of the oscillator.
Each nodal rod comprises at least one stress measurement and communication module (21), the stress measurement and communication module (21) comprising a wired communication interface or a wireless communication antenna.
The stress measurement and communication module (21) is used as a terminal node of the stress monitoring Internet of things and is in communication connection with a sink node of the stress monitoring Internet of things.
The wireless receiver (8) is used as a sink node of the stress monitoring Internet of things, and a data transmission channel exists between the wireless receiver antenna (81) or a wired communication interface and a plurality of terminal nodes of the stress monitoring Internet of things.
The device provided by the embodiment is characterized in that:
one end of the force guide cable (1) is connected with the force guide cable anchor (11), and one end of the force guide cable (1) is directly connected with the force guide cable anchor (11), or one end of the force guide cable (1) is connected with the force guide cable anchor (11) through a tension spring.
The tension springs (not shown in the drawings) provide tension for the force guide cable (1), and the tension is used for keeping proper extrusion force between the force guide cable (1) and the force guide pad (14) and between the force guide pad (14) and the structural beam (4).
The device provided by the embodiment is characterized in that:
the other end of the force guide cable (1) is connected with the force guide cable fastener (12), and one end of the force guide cable (1) is directly connected with the screw rod (121), or one end of the force guide cable (1) is connected with the screw rod (121) through a tension spring.
The device provided by the embodiment is characterized in that:
a force guide cable anchor (11) contained at one end of the force guide cable (1) is connected with the corresponding force guide cable support (3) at the end, and a force guide cable fastener (12) contained at the other end of the force guide cable (1) is connected with the corresponding force guide cable support (3) at the end;
the stress sensor (2) is arranged between the guide cable fastener (12) and the guide cable support (3).
Referring to fig. 3, the relative position between the force-guiding cable supports (3) at the two ends of the force-guiding cable (1) is unchanged, when the structural beam (4) deforms, the deformation stress is transmitted to the force-guiding cable (1) through the force-guiding pad (14), and the force-guiding cable (1) transmits the deformation stress to the stress sensor (2).
A stress sensor (2) may be provided or not provided between a guide cable anchor (11) included at one end of a guide cable (1) and a guide cable support (3) corresponding to the end.
The device provided by the embodiment can be used in the following scenes:
an application scenario one, external layout, is shown in fig. 4;
under the scene of external arrangement, the force guide cable (1) is positioned outside the body of the structural beam (4), and the force guide cable support (3) is fixed on the structural beam; or
The guide cable support (3) is fixed to the support of the structural beam.
An application scene two, built-in layout, is shown in fig. 5;
under the scene of built-in layout, the force-guiding cable (1) is positioned in a structural beam inner hole (41) contained in the structural beam (4), and the force-guiding cable support (3) is fixed on the structural beam.
The structural beam (4) comprises a span beam of a bridge, an overhead highway span beam, an overhead railway span beam, a floor slab, a tunnel wall and a seabed caisson.
The embodiment of the utility model provides a method and device can use electronic technology, radio transmission technology and internet technology to realize in whole or part; the embodiment of the utility model provides a module or unit that device contains can adopt structural component and electronic components to realize.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
The utility model discloses a structural stress perception device that embodiment mode provided, the deformation that has overcome prior art existence detects the precision poor, lay the loaded down with trivial details, the scene commonality is poor and be difficult to discover at least one in these shortcomings of structural component deformation in early stage. The structure is succinct, and is with low costs, and the suitability is strong.
Claims (7)
1. A structural stress sensing device comprising a guide cable (1), a guide cable anchor (11) and a guide cable fastener (12), wherein:
one end of the force guide cable (1) is connected with the force guide cable anchor (11), and the other end of the force guide cable (1) is connected with the force guide cable fastener (12);
at least one stress sensor (2) and at least one force guiding pad (14) are arranged between the force guiding cable anchor (11) and the force guiding cable fastener (12);
the force-guiding mat (14) transmits structural stresses to the force-guiding cable (1), and the force-guiding cable (1) transmits the structural stresses to the stress sensor (2).
2. The apparatus of claim 1, wherein:
the force guiding pad (14) arranged on the force guiding cable (1) is a lantern ring with a through hole or a side-mounted support piece with a limiting notch;
when the force guide pad (14) is a lantern ring with through holes, the force guide cable (1) penetrates through the lantern ring, the outer surface of the lantern ring is in contact with the structural part, and the deformation stress of the structural part is transferred to the force guide cable (1);
when the force guide pad (14) is a side-mounted support member with a limiting notch, the force guide cable (1) penetrates through the limiting notch, and the end face of the side-mounted support member with the limiting notch is in contact with the structural member and transmits the deformation stress of the structural member to the force guide cable (1).
3. The apparatus of claim 1, wherein:
the force-guiding cable fastener (12) comprises a screw (121) and a nut (122), and the nut (122) presses the stress sensor (2) directly or through a gasket.
4. The apparatus of claim 1, wherein:
the stress sensor (2) is electrically connected with the stress measurement and communication module (21); or
An electrical connection and a structural link exist between the stress sensor (2) and the stress measurement and communication module (21).
5. The apparatus of claim 1, wherein:
one end of the force guide cable (1) is connected with the force guide cable anchor (11), and one end of the force guide cable (1) is directly connected with the force guide cable anchor (11), or one end of the force guide cable (1) is connected with the force guide cable anchor (11) through a tension spring.
6. The apparatus of claim 1, wherein:
the other end of the force guide cable (1) is connected with the force guide cable fastener (12), and one end of the force guide cable (1) is directly connected with the screw rod (121), or one end of the force guide cable (1) is connected with the screw rod (121) through a tension spring.
7. The apparatus of claim 1, wherein:
a force guide cable anchor (11) contained at one end of the force guide cable (1) is connected with the corresponding force guide cable support (3) at the end, and a force guide cable fastener (12) contained at the other end of the force guide cable (1) is connected with the corresponding force guide cable support (3) at the end;
the stress sensor (2) is arranged between the guide cable fastener (12) and the guide cable support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063467.4U CN212779684U (en) | 2020-09-20 | 2020-09-20 | Structural stress sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063467.4U CN212779684U (en) | 2020-09-20 | 2020-09-20 | Structural stress sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212779684U true CN212779684U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022063467.4U Active CN212779684U (en) | 2020-09-20 | 2020-09-20 | Structural stress sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212779684U (en) |
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2020
- 2020-09-20 CN CN202022063467.4U patent/CN212779684U/en active Active
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