CN110736418B - Bridge expansion joint monitoring device - Google Patents
Bridge expansion joint monitoring device Download PDFInfo
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- CN110736418B CN110736418B CN201911110878.XA CN201911110878A CN110736418B CN 110736418 B CN110736418 B CN 110736418B CN 201911110878 A CN201911110878 A CN 201911110878A CN 110736418 B CN110736418 B CN 110736418B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 127
- 238000012544 monitoring process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Photovoltaic Devices (AREA)
Abstract
The bridge expansion joint monitoring device comprises a shell, a key power switch, a solar cell panel, a storage battery, a singlechip module, a GPRS module, a short message module and detection equipment, wherein the detection equipment comprises a cylinder, a spring, a sliding plate, a support plate, a front movable plate, a deformation detection mechanism and a detection switch, and the support plate and the cylinder are installed together; a supporting rod is arranged in the cylinder body, a supporting seat plate is arranged at the left end of the supporting rod, and a deformation detection mechanism and a detection switch are respectively arranged at the upper end and the lower end of the left side of the supporting seat plate; the spring is sleeved outside the supporting rod, and the front connecting rod of the front movable plate and the sliding plate are fixedly installed together; the cover is arranged at the left end of the cylinder; the solar cell panel is arranged at the upper outer end of the shell, the singlechip module, the GPRS module and the short message module are arranged on the circuit board, and the circuit board is connected with the key power switch and the storage battery through wires, and the storage battery is arranged in the lower end of the shell and is connected with the deformation detection mechanism and the detection switch of the detection mechanism. The invention can detect the width of the bridge expansion joint in real time.
Description
Technical Field
The invention relates to the technical field of bridge safety monitoring equipment, in particular to a bridge expansion joint monitoring device.
Background
With the development of social economy and the needs of traffic construction, various highways, railways, cross-sea bridges and the like are increasing. In bridge construction, an expansion joint needs to be reserved between every two adjacent bridges, namely, a spacing distance is needed between the two bridges. The main function of the bridge expansion joint is to meet the deformation requirement of the bridge under the action of heat expansion and cold contraction or other stress, and prevent the bridge deck from being damaged due to the mutual extrusion between the beam and the beam. The expansion joint spacing of the bridge has strict requirements, the expansion amount of the bridge with a larger span is about 3 cm, and the expansion joint width is about 9 cm. Under practical conditions, the width of the expansion joint is not too large, and the excessive expansion joint not only causes uneven pavement and damaged bridge deck, but also has hidden trouble of bridge deck collapse under extreme conditions.
In order to prevent the influence of overlarge expansion joints on driving and in consideration of safety, the management department needs to manually detect the width of the expansion joints of the bridge by adopting detection equipment every certain time so as to master whether the width of the expansion joints of the bridge is within an allowable range, and when abnormal data occur, countermeasures are timely taken to reduce unpredictable safety accidents caused by overlarge expansion joints. Because the existing bridge expansion joint detection method is to detect the bridge expansion joint at certain intervals, the detection areas cannot be close to detection personnel, and particularly when the number of bridge points to be detected is large, great inconvenience is brought to the detection personnel; and too many detection points also need different detection personnel to be equipped with different points to detect respectively, so that great inconvenience is brought to personnel arrangement of related departments, and the detection cost is also increased. The manual detection mode has the problem that real-time detection cannot be achieved, and when detection personnel do not detect, relevant departments cannot know real-time data of the expansion joint of the bridge.
Disclosure of Invention
In order to overcome the defects existing in the existing bridge expansion joint detection, the invention provides the bridge expansion joint monitoring device which can uninterruptedly detect the bridge expansion joint data for 24 hours without humanization, and when the expansion joint exceeds a set value (such as the expansion joint ultra-wide caused by earthquake in a monitoring area or the expansion joint ultra-wide caused by overlarge stress of a bridge due to serious overload vehicles), prompt management personnel for the first time and timely take countermeasures, and can provide the expansion joint data for related departments in real time.
The technical scheme adopted for solving the technical problems is as follows:
The bridge expansion joint monitoring device comprises a shell, a key power switch, a solar cell panel, a storage battery, a singlechip module, a GPRS module and a short message module, and is characterized by further comprising detection equipment, wherein the detection equipment comprises a cylinder, a spring, a sliding plate, a supporting plate, a front movable plate, a deformation detection mechanism and a detection switch, the cylinder is matched with a cover, the right side end of the cylinder is of a closed structure, and the supporting plate and the right side outer end of the cylinder are fixedly arranged together; support rods are transversely distributed in the middle of the inner right part of the cylinder body, a support seat plate is arranged at the left side end of the support rods, and a deformation detection mechanism and a detection switch are respectively arranged at the upper end and the lower end of the left side of the support seat plate; the spring is sleeved outside the supporting rod and is positioned in the cylinder, a front connecting rod is arranged on the right side of the front movable plate, the front connecting rod is sleeved in a hole in the middle of the cover, and the right end of the front connecting rod is fixedly arranged together with the middle of the sliding plate; the cover is arranged at the left end of the cylinder body, and the sliding plate is positioned in the left end of the cylinder body; the solar cell panel is arranged at the upper outer end of the shell, the lower end of the shell is of a hollow structure, the singlechip module, the GPRS module and the short message module are arranged on the circuit board, the key power switch and the storage battery are arranged in the lower end of the shell, the shell is arranged at a place where a bridge can be illuminated, and the front movable plate and the support plate are positioned in a space between the front and the rear of an expansion joint of the bridge and are respectively in close contact with the front and the rear ends of the expansion joint; the key power switch, the solar panel, the storage battery, the singlechip module, the GPRS module, the short message module, the deformation detection mechanism of the detection equipment and the detection switch are connected through wires.
Further, the outside diameter of the sliding plate of the detection device is smaller than the inside diameter of the cylinder, the outside diameter of the spring is smaller than the outside diameter of the sliding plate, the left-right length of the spring is larger than the left-right length of the cylinder, the front movable plate and the support plate are positioned in the front-back space of the expansion joint of the bridge, and the right side of the sliding plate is in close contact with the left side end of the deformation detection mechanism and the left side end of the detection switch.
Further, the inner middle part of the supporting rod of the detection equipment cylinder body is provided with internal threads from left to right, the right side end of the supporting seat plate is transversely provided with a screw rod, and external threads of the screw rod are screwed into the internal threads which are transversely distributed on the supporting column.
Further, the deformation detection mechanism of the detection equipment comprises a shell, a sliding adjustable resistor, a spring and an action plate, wherein the right side end of the shell is of a closed structure, the shell is provided with a left cover in a matched mode, the sliding adjustable resistor is welded on a circuit board, the circuit board is transversely arranged at the inner lower portion of the shell, the right side end of the action plate is provided with a connecting rod, the spring is sleeved at the outer end of the connecting rod and is positioned at the right side end of the action plate, the middle part of the connecting rod is positioned in an opening in the middle part of the left cover, the right side end of the connecting rod is fixedly connected with the upper end of an adjusting handle of the sliding adjustable resistor, and the left cover is arranged at the outer side of the left end of the shell.
Further, the detection switch is a normally closed contact type micro-motion switch, the right side of the shell of the deformation detection mechanism is fixedly arranged at the upper left end of the support seat plate, the lower part of the left side end of the support seat plate is provided with a seat body, and the right side of the shell of the detection switch is fixedly arranged at the lower left end of the seat body.
Further, the model of the master control chip of the singlechip module is STC12C5A60S2.
Further, the GPRS module model number is ZLAN8100.
Further, the type of the short message module is GSM DTU SIM800C, and the negative power input end of the short message module is connected with the first low-level trigger end through a wire.
Further, the positive pole and the negative pole of the solar cell panel are respectively connected with the positive pole and the negative pole of the storage battery through wires, the positive pole of the storage battery is connected with one end of a key power switch through wires, the other end of the key power switch is connected with a single chip microcomputer module, the positive pole power input end of a GPRS module, one end of a detection switch of the detection device, one end of a deformation detection mechanism sliding adjustable resistor of the detection device is connected through wires, the other end of the detection switch is connected with the positive pole power input end of a short message module through wires, the other end of the sliding adjustable resistor is connected with the signal input end of the single chip microcomputer module through wires, an RS485 data output port of the single chip microcomputer module is connected with an RS485 data input port of the GPRS module through an RS485 data wire, and the negative pole of the storage battery is connected with the negative pole of the single chip microcomputer module, the GPRS module and the negative pole power input end of the short message module through wires.
The invention has the beneficial effects that: the invention adopts the solar battery to supply power, and a management department can install a set of the invention in one bridge expansion joint of the monitoring point according to the requirement. When the detection device is installed, the detection device is placed in the expansion joint (the detection device is lower than the inner height of the expansion joint and cannot cause rolling damage of vehicles, and is preferably installed at the lower side end of the expansion joint of the bridge), and due to the elastic action of the spring of the detection device, the front movable plate and the support plate of the detection device are positioned in the front-back space of one expansion joint of the bridge and can be respectively in close contact with the front end and the back end of the expansion joint, so that the detection device cannot be displaced and fall after being positioned in the expansion joint. According to the invention, the left and right positions of the detection switch of the detection device and the left and right positions of the action plate of the deformation detection mechanism of the detection device can be adjusted by adjusting the left and right positions of the screw rod at the right side of the circular support seat plate of the detection device in the cylindrical support rod of the cylinder, so that the detection device is ensured to be placed in the expansion joint with normal width, and the front movable plate and the support plate of the detection device are positioned in the front-back space of one expansion joint of the bridge, and the right side of the sliding plate just presses the left end button of the detection switch to open the two normally closed contacts in the sliding plate and just contacts with the left side of the action plate. In the application of the invention, the width information of the bridge expansion joint is transmitted to a remote management department PC machine through a wireless mobile network in real time by a GPRS module under the action of a related mechanism and a circuit module, and the remote management department can check the expansion joint data of the bridge through application software in the PC machine at any time according to the need; when the width of the expansion joint exceeds a set value (such as the expansion joint ultra-wide caused by earthquake in a monitoring area, or the bridge is stressed too much caused by serious overload vehicles, so that the expansion joint ultra-wide), management personnel can be prompted by a short message module at the first time to take countermeasures (such as timely plugging the bridge with the oversized expansion joint and not allowing vehicles to pass any more, so that serious traffic accidents caused by the oversized expansion joint are prevented). The invention not only can provide expansion joint data for related departments in real time, but also reduces the labor cost of the related departments and the data acquisition cost because of no need of manual detection, thereby providing powerful technical support for the safety application of bridges. Based on the above, the invention has good application prospect.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the structure of the detecting device of the present invention.
FIG. 3 is a schematic diagram of a deformation amount detecting mechanism of the detecting apparatus of the present invention.
Fig. 4 is a circuit diagram of the present invention.
Detailed Description
The bridge expansion joint monitoring device comprises a shell 1, a key power switch 2, a solar panel 3, a storage battery 4, a singlechip module 5, a GPRS module 6 and a short message module 7, and further comprises a detection device 8, wherein the detection device comprises a cylinder 81, a spring 82, a sliding plate 83, a supporting plate 84, a front movable plate 85, a deformation detection mechanism 86 and a detection switch 87, an external thread is arranged on the outer side of the left end of the cylinder 81, a cover 88 with an opening in the middle is matched with the left end of the cylinder 81, the right end of the cylinder 81 is of a closed structure, a circular connecting rod 84-1 which is integrally formed is arranged in the middle of the left end of a circular supporting plate 84, and the left end of the connecting rod 84-1 and the middle of the right outer end of the cylinder 81 are integrally formed and installed together; a cylindrical supporting rod 89 which is integrally formed and installed is transversely distributed in the middle of the inner right part of the cylinder 81, a circular supporting seat plate 810 is arranged at the left side end of the supporting rod 89, and a deformation detecting mechanism 86 and a detecting switch 87 are respectively installed at the upper end and the lower end of the left side of the supporting seat plate 810; the spring 82 is sleeved outside the supporting rod 89 and is positioned in the cylinder 81, an opening is formed in the middle of the circular sliding plate 83, a front connecting rod 85-1 which is integrally formed and installed together is arranged in the middle of the right side of the front movable plate 85, external threads are formed at the right end of the front connecting rod 85-1, the front connecting rod 85-1 is sleeved in a hole in the middle of the cover 88, and the right end of the front connecting rod 85-1 and the middle of the sliding plate 83 are fixedly installed together through two nuts; the cover 88 is screwed into the left end of the cylinder 81 through the right internal thread thereof, the external thread is arranged at the left end of the cylinder 81, and the sliding plate 83 is positioned in the left end of the cylinder 81; the solar cell panel 3 is arranged at the upper outer end of the shell 1, the lower end of the shell 1 is of a hollow structure (outside sealing), the single chip microcomputer module 5, the GPRS module 6 and the short message module 7 are arranged on a circuit board, the key power switch 2 and the storage battery 4 are arranged in an element box 9, the element box 9 is arranged at the lower end of the shell 1, a plurality of fixing plates 101 with fixing holes are arranged around the rear side end of the shell 1, the shell 1 is arranged at a place where the side end of a bridge can be illuminated by expansion bolts through the plurality of fixing plates 101, and the front movable plate 85 and the support plate 84 are positioned between the front and the rear of the expansion joint of the bridge and are respectively in tight contact with the front end and the rear end of the expansion joint; the key power switch 2, the solar panel 3, the storage battery 4, the singlechip module 5, the GPRS module 6, the short message module 7, the deformation detection mechanism 86 of the detection equipment and the detection switch 87 are connected through wires.
As shown in fig. 1, 2 and 3, the outer diameter of the sliding plate 83 of the detecting device is slightly smaller than the inner diameter of the cylinder 81 by 0.2mm, the outer diameter of the spring 82 is smaller than the outer diameter of the sliding plate 83, the left and right length of the spring 82 is longer than the left and right length of the cylinder 81 by 1cm without compression, the outer diameter of the front connecting rod 85-1 is slightly smaller than the inner diameter of the hole in the middle of the cover 88 by 0.2mm, the front movable plate 85 and the supporting plate 84 are positioned in the front-rear space of one expansion joint of the bridge, and the right side of the sliding plate 83 moves rightward against the elastic force of the spring 82 and is in close contact with the left side ends of the detection mechanism 86 and the detection switch 87. The middle part of the cylindrical supporting rod 89 of the detection equipment cylinder is internally provided with internal threads from left to right, the middle part of the right side end of the circular supporting seat plate 810 is transversely provided with a screw 811 which is integrally formed and installed together, and the supporting seat plate 810 is installed at the left end of the supporting column 89 by screwing external threads of the screw 811 into the internal threads which are transversely distributed on the supporting column 89. The deformation detecting mechanism 86 of the detecting device comprises a cylindrical shell 861 with a closed structure at the right side end, a sliding adjustable resistor 862, a spring 863 and an action plate 864, wherein an external thread is arranged at the outer side of the left end of the shell 861 (the outer diameter of the spring is smaller than that of the action plate and the outer diameter of the left cover), the shell is matched with a left cover 865, the sliding adjustable resistor 862 is welded on a circuit board, the circuit board is transversely arranged at the inner lower part of the shell 861, a circular connecting rod 864-1 which is integrally formed at the middle part of the right side end of the circular action plate 864 and provided with an opening from front to back is arranged at the right side end of the circular action plate 864, the right side end of the connecting rod 864-1 is rectangular, the spring 863 is sleeved at the outer end of the connecting rod 864-1 and is positioned at the right side end of the action plate 864, the middle part of the connecting rod 864-1 is positioned in an opening at the middle part of the left cover Zuo Waice (the spring is positioned at the end of the left cover 862), the right side end of the connecting rod 864-1 penetrates through an opening at the right side end of the connecting rod 864-1, an opening is arranged at the upper end of the sliding adjustable resistor handle, the connecting rod is screwed into the circular connecting rod 861, the left end 861 is screwed into the circular shell 861, and the outer diameter is slightly screwed into the outer side of the shell 861 through the left threaded cover 861, and the left end 861. The detection switch 87 is a normally closed contact type micro-motion switch, the right side of a cylindrical shell 861 of the deformation detection mechanism is adhered to the upper end of the left side of the circular support base plate 810 through glue, the lower part of the left side end of the circular support base plate 810 is provided with a cylindrical base body 812 which is integrally formed and transversely distributed, and the right side of a shell of the detection switch 87 is adhered to the lower end of the left side of the cylindrical base body 812 through glue.
As shown in fig. 4, SD is a detection switch of the detection device. The front end of the key power switch SK is positioned on the outer side of the middle part of the front lower end of the shell, the solar panel G1 is a solar panel finished product with voltage of 6V and power of 20W, and the storage battery G2 is a lithium storage battery with the model of 6V/40 Ah. The singlechip module IC1 is a finished singlechip module product with a main control chip of STC12C5A60S2, and is provided with two power input ends 1 and 2 pins (VCC and GND), a signal input end 3 pin and one path of RS485 data output port. The GPRS module IC2 is a finished GPRS module of model ZLAN8100 with two power supply terminals 1 and 2 pins (VCC and GND) and one RR485 data input port. The short message module IC3 is a finished product of a short message alarm module of a brand Robotsky and a model GSM DTU SIM800C, and is provided with two power input ends 1 and 2 pins (VCC and GND), eight low-level trigger ends 3-11 pins, and an SIM card is arranged in the short message module IC3, under the function of the short message module IC, a user can store a required short message (such as ultra-wide bridge expansion joint) in advance and store a telephone number required to be notified when alarming, and can store the telephone number of six persons at most, after the short message module IC is powered on, after any low-level trigger end is input with a low-level trigger signal, the short message module IC3 can send a short message for the telephone number preset in the short message module IC under the function of an internal circuit of the short message module IC, and the negative power input end 2 pin of the short message module IC3 and the first low-level trigger end 3 pin are connected through a wire.
In fig. 4, the positive electrode and the negative electrode of the solar panel G1 and the positive electrode and the negative electrode of the storage battery G2 are respectively connected through wires, the positive electrode of the storage battery G2 and one end of the key power switch SK are connected through wires, the other end of the key power switch SK is connected with the positive electrode power input end VCC of the single chip microcomputer module IC1, the positive electrode power input end VCC of the GPRS module IC2, one end of the detection switch SD of the detection device and one end of the deformation detection mechanism sliding adjustable resistor RP of the detection device are connected through wires, the other end of the detection switch SD is connected with the positive electrode power input end VCC of the short message module IC3 through wires, the other end of the sliding adjustable resistor RP is connected with the signal input end 3 pin of the single chip microcomputer module IC1 through wires, the RS485 data output port of the single chip microcomputer module IC1 is connected with the RS485 data input port of the GPRS module IC2 through the RS485 data wire, and the negative electrode of the storage battery G2 is connected with the negative electrode power input end GND of the GPRS module IC1, the negative electrode power input end GND of the GPRS module IC2 and the negative electrode power input end GND of the short message module IC3 through wires.
In the use of the invention, as shown in fig. 1,2, 3 and 4, the solar panel G1 is illuminated to generate electric energy for charging the lithium storage battery G2 in daytime, so that the lithium storage battery G2 can be used normally in the evening and in rainy days without illumination, and can be used once for about 70 days even if the solar panel G1 is not charged after the lithium storage battery G2 is fully charged, and the electric energy supply (about 20mA of working standby current) can be fully ensured. The management department of the invention can install a set of detection equipment in a bridge expansion joint at the monitoring point according to the requirement. When the detection device 8 is installed, the detection device 8 is placed in the expansion joint (the detection device 8 is lower than the inner height of the expansion joint and cannot cause rolling damage of vehicles, and is preferably installed at the lower side end of the expansion joint of a bridge), and due to the elastic acting force of the detection device spring 82, the front movable plate 85 and the support plate 84 of the detection device are positioned in the front-back space of one expansion joint of the bridge and can be respectively in close contact with the front end and the back end of the expansion joint, so that the detection device 8 cannot be displaced and fall after being positioned in the expansion joint. The invention can adjust the left and right positions of the detection switch 87 of the detection device and the deformation detection mechanism action plate 864 of the detection device by adjusting the left and right positions of the right end screw of the circular support base plate 810 of the detection device in the cylindrical support rod 89 of the cylinder, thus ensuring that the detection device 8 is placed in a normal width expansion joint, and after the front movable plate 85 and the support plate 84 of the detection device are positioned in the front and back of one expansion joint of a bridge, the left end button of the detection switch 87 is just pressed by the right side of the sliding plate 83 to open the two normally closed contacts in the inside of the detection switch 87 and just contacts with the left side of the action plate 864 (the left side button of the detection switch 87 and the left side of the action plate 864 are in the same vertical plane from top to bottom); in the concrete adjustment, after the right end screw 811 of the circular supporting seat plate 810 of the detection device rotates clockwise along the internal thread of the cylindrical supporting rod 89, the detection switch 87 of the detection device and the action plate 864 of the deformation detection mechanism of the detection device are positioned at the right position in the cylinder 81, so that the detection device 8 is ensured to be placed in an expansion joint with narrower width, the front movable plate 85 and the supporting plate 84 of the detection device are positioned in the front-back space of one expansion joint of a bridge, and the right side of the sliding plate 83 just presses the left end button of the detection switch 87 to open the two normally closed contacts in the detection switch 87 and just contacts the left side of the action plate 864; after the right end screw rod 811 of the circular supporting seat plate 810 of the detecting device rotates anticlockwise along the internal thread of the cylindrical supporting rod 89, then the detecting switch 87 of the detecting device and the action plate 864 of the deformation detecting mechanism of the detecting device are positioned at the left side in the cylinder 81, so that the detecting device 8 is ensured to be placed in an expansion joint with wider width, the front movable plate 85 and the supporting plate 84 of the detecting device are positioned in the front-back space of one expansion joint of the bridge, and the right side of the sliding plate 83 just presses the left end button of the detecting switch 87 to open the two normally closed contacts in the inside of the sliding plate, and just contacts the left side of the action plate 864. By the above, the detecting device 8 of the present invention can be installed in expansion joints of different widths.
After the invention is installed, as shown in figures 1,2, 3 and 4, a manager turns on the key power switch SK, the singlechip module IC1 and the GPRS module IC2 are in an electric power-on state, and the subsequent manager does not need to manage equipment, so that the invention can be in an unmanned working state. In practical situations, the detecting device 8 is placed in the expansion joint, after the front movable plate 85 and the supporting plate 84 of the detecting device are located in the front-rear space of one expansion joint of the bridge, the right side of the sliding plate 83 just presses the left end button of the detecting switch 87 to open the circuit of two normally-closed contacts in the detecting switch, and just contacts with the left side of the actuating plate 864, and the actuating plate connecting rod 864-1 of the deformation detecting mechanism drives the operating handle of the sliding adjustable resistor 862 to be located in the middle of the sliding handle. because one end of the sliding adjustable resistor RP is communicated with the positive electrode of the storage battery G2 at the moment, the other end of the sliding adjustable resistor RP is connected with the 3 pins of the signal input end of the single-chip microcomputer module IC1, so that the other end of the sliding adjustable resistor RP can output a voltage signal to enter the 3 pins of the signal input end of the single-chip microcomputer module IC1, the resistance value of the adjusting handle of the sliding adjustable resistor RP is increased when the adjusting handle moves rightwards, the signal voltage of the 3 pins input to the single-chip microcomputer module IC1 is decreased, the resistance value of the adjusting handle of the sliding adjustable resistor RP is decreased when the adjusting handle moves leftwards, and the signal voltage of the 3 pins input to the single-chip microcomputer module IC1 is increased. In the invention, when the expansion joint is reduced, a front movable plate 85 between two bridges can overcome the elastic force of a spring 82 to move rightwards, meanwhile, a front connecting rod 85-1 of the front movable plate pushes a sliding plate 83 to move rightwards, an action plate connecting rod 864-1 of a deformation detection mechanism is pushed by the sliding plate to drive an operation handle of a sliding adjustable resistor 862 to move rightwards (the action plate 864 moves rightwards against the elastic force of a spring 863), and the voltage of a 3-foot signal input to a singlechip module IC1 by the sliding adjustable resistor RP becomes lower; In the invention, when the expansion joint is enlarged, the front movable plate 85 between two bridges moves leftwards under the elastic reset force of the spring 82, meanwhile, the front connecting rod 85-1 of the front movable plate drives the sliding plate 83 to move leftwards, the action plate connecting rod 864-1 of the deformation detection mechanism drives the operating handle of the sliding adjustable resistor 862 to move leftwards under the reset elastic force of the spring 863, and the 3-foot signal voltage input to the singlechip module IC1 by the sliding adjustable resistor RP becomes high. when the voltage of the 3-pin signal is input to the single-chip microcomputer module IC1 through the sliding adjustable resistor RP at ordinary times and the voltage of the 3-pin signal is input to the single-chip microcomputer module IC1 through widening or narrowing of the expansion joint, after the voltage enters the 3-pin of the single-chip microcomputer module IC1, the single-chip microcomputer module IC1 converts the input analog voltage signal into a digital signal under the action of an internal circuit of the single-chip microcomputer module IC1, the digital signal is input to an RS485 data input port of the GPRS module IC2 through an RS485 data output port, so that the GPRS module IC2 transmits the voltage signal to a remote management department PC through a wireless mobile network in real time under the action of the internal circuit of the GPRS module IC2, the remote management department can convert the received voltage high-low signal into different numbers or waveform diagrams through application software in the PC at any time according to requirements, is the existing mature computer application technology) to check the expansion joint width data of the bridge; when the displayed voltage signal data is higher than the normal voltage data, the width of the expansion joint is widened, and when the displayed voltage signal is higher than the normal voltage data, the width of the expansion joint is widened, and the difference is larger, the width of the expansion joint is wider; when an abnormality occurs, the management department can take countermeasures in time.
In the present invention, as shown in fig. 1,2,3 and 4, when the expansion joint is enlarged, the front movable plate 85 between two bridges moves leftwards under the elastic restoring force of the spring 82, the front connecting rod 85-1 of the front movable plate drives the sliding plate 83 to move leftwards, and the action plate connecting rod 864-1 of the deformation detecting mechanism drives the operation handle of the sliding adjustable resistor 862 to move leftwards under the restoring elastic force of the spring 863, at the same time, the right side of the sliding plate 83 and the left end of the button of the detecting switch SD are separated by a distance, typically about 3mm, and the button of the detecting switch SD is closed because the button is not pressed by the sliding plate 83 any more; because the positive power input end of the short message module IC3 is connected with the positive electrode of the storage battery G2 through the two contacts of the detection switch SD, the short message module IC3 can work electrically at the moment, and the short message module IC3 can automatically send a short message for the telephone numbers (mobile phones of related management staff of the management department) stored in advance under the action of the internal circuit, and can send short messages for the telephone numbers of six management staff at most, so that the management staff can take countermeasures in time after receiving the short messages (for example, the bridge with too large expansion joints is blocked in time and vehicles are not allowed to pass any more, and serious traffic accidents caused by the too large expansion joints are prevented). According to the invention, short message alarm is not performed aiming at the narrowing of the bridge expansion joint, because the narrowing probability of the expansion joint is extremely low, the probability of dangerous situations is far smaller than the widening probability of the expansion joint (such as the widening of the expansion joint caused by earthquakes and serious overweight vehicles, the possibility of bridge deck damage and collapse is higher), and a management department can monitor in real time through a GPRS module at ordinary times, and the widening probability of the bridge expansion joint is higher, and the occurrence is abrupt, so that the invention monitors the widening of the expansion joint and can meet the actual needs; the expansion joint narrowing monitoring method mainly monitors the expansion joint narrowing caused by expansion and contraction, self deformation and the like of the bridge in real time, and monitors the expansion joint widening caused by expansion and contraction, self deformation and the like of the bridge in real time. The invention not only can provide the expansion joint width data for the related departments in real time, but also reduces the labor cost of the related departments and the data acquisition cost because of no need of manual detection, thereby providing powerful technical support for the safety application of bridges. The adjustable resistor RP is of specification 4.7K.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is limited to the details of the foregoing exemplary embodiments, and that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail herein, but rather is provided for the purpose of enabling those skilled in the art to make and use the embodiments described herein.
Claims (6)
1. The bridge expansion joint monitoring device comprises a shell, a key power switch, a solar cell panel, a storage battery, a singlechip module, a GPRS module and a short message module, and is characterized by further comprising detection equipment, wherein the detection equipment comprises a cylinder, a spring, a sliding plate, a supporting plate, a front movable plate, a deformation detection mechanism and a detection switch, the cylinder is matched with a cover, the right side end of the cylinder is of a closed structure, and the supporting plate and the right side outer end of the cylinder are fixedly arranged together; support rods are transversely distributed in the middle of the inner right part of the cylinder body, a support seat plate is arranged at the left side end of the support rods, and a deformation detection mechanism and a detection switch are respectively arranged at the upper end and the lower end of the left side of the support seat plate; The spring is sleeved outside the supporting rod and is positioned in the cylinder, a front connecting rod is arranged on the right side of the front movable plate, the front connecting rod is sleeved in a hole in the middle of the cover, and the right end of the front connecting rod is fixedly arranged together with the middle of the sliding plate; the cover is arranged at the left end of the cylinder body, and the sliding plate is positioned in the left end of the cylinder body; the solar cell panel is arranged at the upper outer end of the shell, the lower end of the shell is of a hollow structure, the singlechip module, the GPRS module and the short message module are arranged on the circuit board, the key power switch and the storage battery are arranged in the lower end of the shell, the shell is arranged at a place where a bridge can be illuminated, and the front movable plate and the support plate are positioned in a space between the front and the rear of an expansion joint of the bridge and are respectively in close contact with the front and the rear ends of the expansion joint; The key power switch, the solar panel, the storage battery, the singlechip module, the GPRS module, the short message module, the deformation detection mechanism of the detection equipment and the detection switch are connected through wires; the outer diameter of the sliding plate of the detection device is smaller than the inner diameter of the cylinder, the outer diameter of the spring is smaller than the outer diameter of the sliding plate, the left-right length of the spring is larger than the left-right length of the cylinder, and the right side of the sliding plate is closely contacted with the left side end of the deformation detection mechanism and the detection switch after the front movable plate and the support plate are positioned between the front and the back of an expansion joint of the bridge; the deformation detection mechanism of the detection equipment comprises a shell, a sliding adjustable resistor, a spring and an action plate, wherein the right side end of the shell is of a closed structure, the shell is matched with a left cover, the sliding adjustable resistor is welded on a circuit board, the circuit board is transversely arranged at the inner lower part of the shell, the right side end of the action plate is provided with a connecting rod, the spring is sleeved at the outer end of the connecting rod and is positioned at the right side end of the action plate, the middle part of the connecting rod is positioned in an opening in the middle part of the left cover, the right side end of the connecting rod is fixedly connected with the upper end of an adjusting handle of the sliding adjustable resistor, and the left cover is arranged at the outer side of the left end of the shell; The positive pole and the negative pole of the solar cell panel are respectively connected with the positive pole and the negative pole of the storage battery through wires, the positive pole of the storage battery is connected with one end of a key power switch through wires, the other end of the key power switch is connected with a singlechip module, the positive pole power input end of a GPRS module, one end of a detection switch of a detection device, one end of a deflection detection mechanism sliding adjustable resistor of the detection device is connected through wires, the other end of the detection switch is connected with the positive pole power input end of a short message module through wires, the other end of the sliding adjustable resistor is connected with the signal input end of the singlechip module through wires, an RS485 data output port of the singlechip module is connected with an RS485 data input port of the GPRS module through an RS485 data wire, the negative electrode of the storage battery is connected with the negative electrode power input ends of the singlechip module, the GPRS module and the short message module through wires.
2. The bridge expansion joint monitoring device according to claim 1, wherein the inner middle part of the supporting rod of the detecting equipment cylinder is provided with inner threads from left to right, the right side end of the supporting seat plate is transversely provided with a screw rod, and the outer threads of the screw rod are screwed into the inner threads which are transversely distributed on the supporting columns.
3. The bridge expansion joint monitoring device according to claim 1, wherein the detecting switch is a normally closed contact type micro-motion switch, the right side of the shell of the deformation detecting mechanism is fixedly arranged at the upper left end of the supporting seat plate, the lower part of the left side end of the supporting seat plate is provided with a seat body, and the right side of the shell of the detecting switch is fixedly arranged at the lower left end of the seat body.
4. The bridge expansion joint monitoring device according to claim 1, wherein the master control chip of the single chip microcomputer module is STC12C5A60S2.
5. A bridge expansion joint monitoring device according to claim 1, wherein the GPRS module model is ZLAN8100.
6. The bridge expansion joint monitoring device according to claim 1, wherein the short message module is a GSM DTU SIM800C, and the negative power input terminal of the short message module is connected to the first low-level trigger terminal via a wire.
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| CN112523077B (en) * | 2020-12-24 | 2022-03-29 | 郑燊 | Bridge expansion joint width monitoring and early warning device |
| CN112880544B (en) * | 2021-01-13 | 2022-09-09 | 马洲 | Bridge expansion joint alarm device for road engineering |
| CN113137915B (en) * | 2021-04-22 | 2024-07-02 | 淮南市公路管理局直属分局 | Road bridge flatness detection equipment |
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| CN103743316B (en) * | 2014-01-09 | 2016-03-16 | 重庆桥都桥梁技术有限公司 | Curved Ramp bridge pier Liang Sicheng real-time automatic monitoring system |
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| CN208751487U (en) * | 2018-09-10 | 2019-04-16 | 郑州航空工业管理学院 | A kind of novel bridge displacement measuring device |
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