CN114777845A - Embedded bridge period safety detection system and method - Google Patents
Embedded bridge period safety detection system and method Download PDFInfo
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- CN114777845A CN114777845A CN202210519449.3A CN202210519449A CN114777845A CN 114777845 A CN114777845 A CN 114777845A CN 202210519449 A CN202210519449 A CN 202210519449A CN 114777845 A CN114777845 A CN 114777845A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention discloses a pre-buried bridge periodic safety detection system and a method, in particular to the field of bridge detection, which comprises a pressure transmission assembly and a mass pressure transmission mechanism, wherein the mass pressure transmission mechanism is arranged at one side of the pressure transmission assembly, one side of the pressure transmission assembly is fixedly connected with a pre-buried bridge mechanism, the top end of the pre-buried bridge mechanism is connected with a vehicle detection mechanism in a sliding manner, an auxiliary pressure plate extrudes a Y longitudinal pressure sensing assembly through an extrusion telescopic rubber rod, the type of the Y longitudinal pressure sensing assembly is AW, the pressure detection is carried out on the Y longitudinal pressure sensing assembly, as the weight of the vehicle is different, the vehicle has higher mass and higher inertia according to the same speed of an inertia theorem (F = MV), the speed is detected independently, the emergency brake of the vehicle in case of emergency problem can not be judged, whether the sliding distance is safe or not, and therefore, the longitudinal pressure detection is carried out on the vehicle, the vehicle data detection is more comprehensive.
Description
Technical Field
The invention relates to the technical field of bridge detection, in particular to a system and a method for detecting the periodic safety of a pre-buried bridge.
Background
The bridge is a building erected on rivers, lakes and seas, so that vehicles, pedestrians and the like can smoothly pass through the building. Bridge detection device is the safety to bridge measurement personnel, the influence of engineering cycle and traffic, has the decisive role, traditional bridge surface detection method is most public then handheld detector detects, this kind of detection mode wastes time and energy, and the crack that is located guardrail lateral wall and bridge bottom surface still needs the worker to hang and just can detect in the bridge outside, this has brought great potential safety hazard for the worker, and the bridge is as major engineering, in the process of building, for the whole life of extension bridge, the construction personnel can set up some devices that increase the security in bridge inside in advance.
The main body of the bridge is positioned in the center of the river, lake and sea, the main supporting point of the bridge is a bearing position which depends on two supporting points connected with land as force, the weight and the vehicle speed of the bridge body are highly limited, the weight limit requirement of the bridge for the weight is usually 10 tons, 20 tons or 30 tons, the vehicle speed limit is that the maximum speed limit of an average vehicle cannot exceed 20 kilometers per hour, and the service life of the bridge can be seriously damaged when the bridge is in a high-load or vehicle overspeed condition for a long time, and the bridge can collapse when the bridge is serious.
When the existing bridge is built, the whole bridge deck is periodically detected by a detection instrument which is held by detection personnel, the safety condition of the bridge is judged, the collapse phenomenon or the damage phenomenon of the bridge is often that vehicles coming and going are not loaded in a standard manner, and the bridge is greatly stressed once and again to cause the damage condition of the bridge.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a system and a method for pre-buried bridge periodic safety detection, in which the outer wall of the outer sealing frame and the hollow insertion rod are tightly sewed, the joint between the pressure sensing surface and the inner wall of the hollow engaging tube is wrapped by rubber, and the vertical pressure sensing assembly is disposed in the air bag, so as to avoid a large amount of air from entering to solve the above-mentioned problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a pre-buried bridge period safety detection system and a pre-buried bridge period safety detection method comprise a pressure transmission assembly and a mass pressure transmission mechanism, wherein the mass pressure transmission mechanism is arranged on one side of the pressure transmission assembly, one side of the pressure transmission assembly is fixedly connected with a pre-buried bridge mechanism, the top end of the pre-buried bridge mechanism is connected with a vehicle detection mechanism in a sliding mode, and the outer surface of the pressure transmission assembly is provided with a pressure recovery mechanism;
the pressure conduction assembly comprises a prompting frame, a slotted hole is formed in the prompting frame, a warning plate is connected in the prompting frame in a sliding mode through the slotted hole, a sealing rubber sleeve is arranged at the joint of the prompting frame and the warning plate, an intersecting rod frame is arranged in the slotted hole of the prompting frame and is positioned below the warning plate, one side of the intersecting rod frame penetrates through the slotted hole of the prompting frame, a rubber sleeve is arranged at the joint of the intersecting rod frame and a sliding rail, the intersecting rod frame and the rubber sleeve are arranged in a sealing state, an auxiliary pressing plate is fixedly connected to the other side of the intersecting rod frame, a movable connecting rod is hinged to one side of the auxiliary pressing plate, a hollow clamping rod is arranged on one side of the movable connecting rod, a nut rod is connected to one side of the hollow clamping rod in a threaded mode, and a telescopic rubber rod is fixedly connected to the outer surface of the auxiliary pressing plate, the output end of the telescopic rubber rod is electrically connected with a Y-shaped longitudinal pressure sensing assembly;
the mass pressure conduction mechanism comprises a hollow insertion rod, the hollow insertion rod is hinged to the bottom end of the joint rod frame, the top end of the inside of the hollow insertion rod is fixedly connected with an insertion tube, a receiving tube is inserted into the bottom end of the hollow insertion rod, a clamping hollow tube is inserted into the outer surface of the insertion tube, four groups of air bags are fixedly connected to the outer side of the clamping hollow tube, vertical pressure sensing assemblies in corresponding number are arranged inside the air bags, four groups of vertical pressure sensing assemblies are arranged on the outer surfaces of the air bags, the hollow insertion rod is attached to the outer wall of the outer sealing frame, four groups of attaching air bag tubes are attached to the outer wall of the hollow insertion rod, four groups of buffering air bags in corresponding number are fixedly connected to one side of the attaching air bag tubes, the buffering air bags are fixedly connected to the inner side of the receiving tube, and torque springs are arranged in the inner cavities of the attaching air bag tubes.
The beneficial effect of adopting the further scheme is that: the inserting tube is inserted into the inner cavity of the clamping hollow tube, one part of the air bag is inserted into the clamping hollow tube and is a pressure sensing surface, the inserting tube extrudes the pressure sensing surface of the air bag, the joint of the pressure sensing surface and the inner wall of the clamping hollow tube is wrapped by rubber, the vertical pressure sensing assembly is placed in the air bag, a large amount of air is prevented from entering the air bag, the weight of the automobile is large, the air flow pressed down by the hollow inserting rod can cause errors on a test result, the auxiliary pressure plate extrudes the Y longitudinal pressure sensing assembly by extruding the telescopic rubber rod, the type of the Y longitudinal pressure sensing assembly is AW, the pressure is detected, the weight of the automobile is different, the inertia is larger according to the same speed of an inertia theorem (F = MV), the inertia is larger, the speed is detected independently, and the emergency brake of the automobile can not be judged when the emergency problem occurs, whether the sliding distance is safe.
In a preferred embodiment, the pre-buried bridge mechanism comprises two sets of positioning support blocks, the outer walls of the positioning support blocks are in threaded connection with fit steel plates, the two sets of positioning support blocks are fixedly connected through the fit steel plates, one sides of the positioning support blocks are provided with corresponding sliding grooves, and the bottom ends of the corresponding sliding grooves are fixedly connected with a main support frame.
The beneficial effect of adopting the above further scheme is: if the equipment goes wrong, the equipment can be conveniently disassembled.
In a preferred embodiment, the pre-buried bridge mechanism further comprises a main supporting plate fixedly connected to the bottom end of the main supporting frame, and a positioning frame is connected to the outer surface of the main supporting plate in a threaded manner.
The beneficial effect of adopting the further scheme is that: the installation of the whole bridge deck is convenient.
In a preferred embodiment, the positioning frame is provided with an auxiliary chute adapted to an outer wall of the receiving pipe, the receiving pipe is arranged in a sliding state through the auxiliary chute, a rubber speed-limiting block is arranged at a joint of the receiving pipe and the auxiliary chute, one side of the engaging rod frame penetrates through the main support frame, one side of the main support frame is provided with a vertical groove for the engaging rod frame to slide up and down, the main support frame is provided with a limiting groove for the hollow engaging rod to rotate, the hollow engaging rod is rotatably connected to an inner wall of the main support frame through a nut rod, the Y-shaped longitudinal pressure sensing assembly is fixedly connected to the inner wall of the main support frame, and the prompt frame is fixedly connected to a side wall of the main support frame.
The beneficial effect of adopting the further scheme is that: the detection plate drives the movable connecting rod to move towards one side of the Y-shaped longitudinal pressure sensing assembly through the auxiliary pressing plate by the aid of the engaging rod frame, the connecting part of the movable connecting rod and the hollow clamping rod can slide, the engaging rod frame moves up and down, and the movable connecting rod can also slide up and down simultaneously.
In a preferred embodiment, the vehicle detection mechanism comprises two auxiliary sliding rail frames fixedly connected to the inner sides of the corresponding sliding grooves, and a detection plate is connected between the two auxiliary sliding rail frames in a sliding manner.
The beneficial effect of adopting the above further scheme is: the detection plate moves to one side of the curved auxiliary sliding block through rolling friction force of the friction block and the tire, the detection plate slides between the two sets of auxiliary sliding track frames, the curved auxiliary sliding block is a curved surface, so that the vehicle can go out of the vehicle detection mechanism, the vehicle can easily and quickly run to the front through the curved surface, in the process, the weight of the vehicle presses the engaging rod frame through the detection plate, and the ground of the detection plate is higher than the upper surface of the auxiliary sliding track frames.
In a preferred embodiment, the vehicle detection mechanism further comprises a plurality of groups of friction blocks inserted into one side of the detection plate, a curved auxiliary sliding block is fixedly connected to the joint of the auxiliary sliding track frame and the positioning support block, the detection plate is fixedly connected to the top end of the intersection rod frame, and the detection plate is higher than the auxiliary sliding track frame.
The beneficial effect of adopting the further scheme is that: the curved auxiliary sliding block is a curved surface, so that the vehicle can go out of the vehicle detection mechanism, and the vehicle can easily and quickly go to the front through the curved surface in the process.
In a preferred embodiment, the pressure recovery mechanism comprises a motor, the output end of the motor is rotatably connected with a supporting rotating rod, the supporting rotating rod is rotatably connected to one side of the main supporting frame, the outer surface of the supporting rotating rod is rotatably connected with a wheel belt, and a limiting block is arranged at the joint of the supporting rotating rod and the wheel belt.
Establishing a mathematical model of the motor under a two-phase static coordinate system, wherein the mathematical model is expressed as follows:
in formulae (1) and (2), phisRepresents the stator flux linkage; psirRepresenting the rotor flux linkage; u. ofsRepresenting a voltage vector acting on the stator; j denotes a vector operation, d denotes a derivation operation, isRepresenting a stator current; rsRepresenting the stator resistance; rrRepresenting the rotor resistance; l is a radical of an alcoholsRepresenting the stator inductance; l isrRepresenting rotor inductance；LmRepresenting mutual inductance; omegarIndicating the rotating speed of the motor; σ represents the initial angle of the motor phase.
The electromagnetic relation of the motor is mastered by establishing a mathematical model of the motor under a two-phase static coordinate system, the control of the motor is realized, the proposed mathematical model is operated based on the existing theoretical basis, the understanding is simple, the operability of the motor control is strong, the reliable technical support is provided for the normal use of the system, and the mathematical model and the system can be popularized in a large range.
The beneficial effect of adopting the above further scheme is: the bearing capacity of the surface of the receiving pipe is T-T, the downward moving depth of the hollow insertion rod is deeper, and the joint rod frame deflects by a larger angle around the surface of the rotating frame.
In a preferred embodiment, the pressure recovery mechanism further comprises a rotating frame rotatably connected to one side of the main support frame, the belt wheel is rotatably connected to the outer surface of the rotating frame, a limiting block frame is arranged at the connection position of the rotating frame and the belt wheel, and the limiting block frame is fixedly connected to one side of the positioning support block.
The beneficial effect of adopting the further scheme is that: the rotary frame drives the joining rod frame to extrude upwards at the slotted hole of the prompting frame, and the joining rod frame moves upwards due to the fact that the joining rod frame is matched with the slotted hole.
In a preferred embodiment, the coupling rod frame is engaged with the outer side of the rotating frame, four groups of torque springs are arranged on the outer side of the rotating frame, a corresponding number of curved air bag blocks are arranged on the outer sides of the four groups of torque springs, and a positioning snap ring is fixedly connected to the outer side of each curved air bag block and is rotatably connected to the outer surface of the rotating frame.
The beneficial effect of adopting the above further scheme is: in order to restore the original state of the joining rod frame and the warning plate, the motor is controlled to drive the supporting rotating rod to rotate anticlockwise, the supporting rotating rod drives the rotating frame to rotate anticlockwise through rolling friction force between the supporting rotating rod and the wheel belt, and the rotating frame drives the joining rod frame to restore to the original position anticlockwise.
A pre-buried bridge periodic safety detection method comprises the following steps:
s1: when a bridge is built, the length of the bridge is L m, the width of the bridge is T m, N pre-buried bridge period safety detection devices are installed in corresponding installation intervals, N is a multiple of 4, the corresponding installation intervals are set to be an X transverse interval and a Y longitudinal interval, when the X transverse interval is installed, the number of the corresponding installation intervals is two, namely, a positive line and a negative line, the installation interval of every two devices in the X transverse interval is T/4 m, and the installation interval of every two devices in the Y longitudinal interval is L/N m;
s2: when each vehicle slides on the bridge, the wheels of the vehicle generate downward pressure and forward friction force on the detection plate;
s3: the detection plate is pressed downwards to pass through the vertical pressure sensing assembly and the vertical pressure sensing assembly, collected data are vehicle overall weight data which are recorded as M, the detection plate is pressed forwards by a friction force to pass through the Y longitudinal pressure sensing assembly and the speed sensing assembly rotating frame, the collected data are recorded as Z, numerical statistics of the Z is divided into two parts, one part is that the Y longitudinal pressure sensing assembly and the Y longitudinal pressure sensing assembly are pressed longitudinally to represent a pressure value in the sliding process, and the other speed sensing assembly rotating frame is used for recording the speed of driving the sliding frame to move to the end point of the movable distance by the detection plate once;
s4: when Z exceeds the specified value of the bridge, the information of the signal receiving assembly arranged in the bridge is transmitted to the equipment control assembly I linked with the signal receiving assembly, the rest friction blocks positioned in front of the running vehicle without treading are lifted to a height higher than the original height, the height ranges from 10 cm to 20 cm, the friction force contacted by the single vehicle is increased, the running speed of the single vehicle is reduced, or M exceeds the specified value of the bridge, the information is transmitted to the equipment control assembly II linked with the signal receiving assembly, the warning plate linked with the detection plate bounces, the staff is prompted to pay attention to the warning plate, and the warning plate is processed.
The invention has the technical effects and advantages that:
1. the outer wall of the sealing outer frame and the hollow inserted rod are in a tight sewing state, the joint of the pressure sensing surface and the inner wall of the clamping hollow tube is wrapped by rubber, and the vertical pressure sensing assembly is placed in the air bag to prevent a large amount of air from entering, so that the weight of the vehicle can be detected more simply, and the detection data are more accurate;
2. the invention grasps the electromagnetic relation of the motor by establishing a mathematical model of the motor under a two-phase static coordinate system, realizes the control of the motor, is operated based on the prior theoretical basis, has simple understanding and strong operability of the motor control, provides reliable technical support for the normal use of the system, and can be popularized in a large range together with the system.
3. The auxiliary pressure plate extrudes the Y longitudinal pressure sensing assembly through extruding the telescopic rubber rod, the type of the Y longitudinal pressure sensing assembly is AW, the pressure is detected, the weight of the vehicle is different, the larger the vehicle mass is, the larger the inertia is, the speed is detected independently, and the emergency brake of the vehicle in case of emergency can not be judged, and whether the sliding distance is safe or not can not be judged according to the equivalent speed of an inertia theorem (F = MV);
4. when a bridge is built, the length of the bridge is L m, the width of the bridge is T m, N pre-buried bridge period safety detection devices are installed in corresponding installation sections, N is a multiple, the corresponding installation sections are set as an X transverse section and a Y longitudinal section, when the bridge is installed in the X transverse section, the bridge is divided into two forward and reverse lanes, the installation interval of every two devices in the X transverse section is T/m, and the installation interval of every two devices in the Y longitudinal section is L/N m, so that the detection efficiency is improved, and a detection blind area is avoided.
Drawings
Fig. 1 is a schematic structural view of a pressure conduction assembly according to the present invention.
FIG. 2 is an enlarged view of the portion A of FIG. 2 according to the present invention.
FIG. 3 is a schematic view of the positioning support block of the present invention.
Fig. 4 is a schematic structural view of the auxiliary sliding rail frame according to the present invention.
FIG. 5 is a schematic view of the structure of the retractable rubber rod of the present invention.
Fig. 6 is a schematic structural view of the crossing bar frame of the present invention.
Fig. 7 is a schematic structural view of the main support frame of the present invention.
FIG. 8 is a schematic view of a positioning ring according to the present invention.
FIG. 9 is a schematic view of the structure of the hollow insert rod of the present invention.
FIG. 10 is a schematic view of the snap-fit hollow tube of the present invention.
The reference signs are: 1. a pressure conducting component; 101. a prompt framework; 102. a warning panel; 103. a cross bar frame; 104. an auxiliary pressure plate; 105. a movable connecting rod; 106. a hollow engaging rod; 107. a Y longitudinal pressure sensing component; 108. a telescopic rubber rod; 2. a mass pressure conducting mechanism; 201. a hollow insertion rod; 202. a receiving tube; 203. inserting a tube; 204. sealing the outer frame; 205. clamping the hollow pipe; 206. an air bag; 207. a vertical pressure sensing assembly; 208. a buffer air bag; 209. attaching an air bag pipe; 3. pre-embedded bridge mechanisms; 301. positioning a supporting block; 302. a corresponding sliding groove; 303. fitting a steel plate; 304. a main supporting frame; 305. a main supporting plate; 306. a positioning frame; 4. a vehicle detection mechanism; 401. an auxiliary sliding track frame; 402. a friction block; 403. detecting a plate; 404. a curved auxiliary slider; 5. a pressure recovery mechanism; 501. a motor; 502. supporting the rotating rod; 503. a belt; 504. a limiting block frame; 505. a rotating frame; 506. positioning the snap ring; 507. a torque spring; 508. a curved air bag mass.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, example 1: the pre-buried bridge mechanism 3 comprises two groups of positioning support blocks 301, the outer walls of the positioning support blocks 301 are in threaded connection with fit steel plates 303, the two groups of positioning support blocks 301 are fixedly connected through the fit steel plates 303, one sides of the positioning support blocks 301 are provided with corresponding sliding grooves 302, the bottom ends of the corresponding sliding grooves 302 are fixedly connected with a main support frame 304, the pre-buried bridge mechanism 3 further comprises a main support plate 305 fixedly connected to the bottom end of the main support frame 304, the outer surface of the main support plate 305 is in threaded connection with a positioning frame 306, the positioning frame 306 is provided with auxiliary sliding grooves adapted to the outer walls of the receiving pipes 202, the receiving pipes 202 are arranged in a sliding state through the auxiliary sliding grooves, the joints of the receiving pipes 202 and the auxiliary sliding grooves are provided with rubber speed limiting blocks, one side of the crossing rod frame 103 penetrates through the main support frame 304, one side of the main support frame 304 is provided with vertical grooves for the crossing rod frame 103 to slide up and down, the main support frame 304 is provided with a limit groove for the rotation of the hollow clamping rod 106, the hollow clamping rod 106 is rotatably connected on the inner wall of the main support frame 304 through a nut rod, the Y longitudinal pressure sensing assembly 107 is fixedly connected on the inner wall of the main support frame 304, the prompting frame 101 is fixedly connected on the side wall of the main support frame 304, the vehicle detection mechanism 4 comprises two auxiliary sliding track frames 401 fixedly connected on the inner sides of the corresponding sliding grooves 302, a detection plate 403 is slidably connected between the two auxiliary sliding track frames 401, the vehicle detection mechanism 4 further comprises a plurality of groups of friction blocks 402 inserted on one side of the detection plate 403, a curved auxiliary sliding block 404 is fixedly connected at the joint of the auxiliary sliding track frames 401 and the positioning support block 301, the detection plate 403 is fixedly connected at the top end of the cross rod frame 103, the detection plate 403 is higher than the position of the auxiliary sliding track frame 401, the mass pressure conduction mechanism 2 comprises a hollow insertion rod 201, the hollow inserted link 201 is hinged to the bottom end of the joint link frame 103, the top end inside the hollow inserted link 201 is fixedly connected with an insertion tube 203, the bottom end of the hollow inserted link 201 is inserted with a receiving tube 202, the outer surface of the insertion tube 203 is inserted with a clamping hollow tube 205, the outer side of the clamping hollow tube 205 is fixedly connected with four groups of air bags 206, the inside of each group of air bags 206 is provided with a corresponding number of vertical pressure sensing assemblies 207, the outer surfaces of the four groups of air bags 206 are provided with a sealing outer frame 204, the hollow inserted link 201 is attached to the outer wall of the sealing outer frame 204, the outer wall of the hollow inserted link 201 is attached with four groups of attaching air bag tubes 209, one side of each group of the four attaching air bag tubes 209 is fixedly connected with a corresponding number of buffering air bags 208, the buffering air bags 208 are fixedly connected to the inner side of the receiving tube 202, and the inner cavities of the attaching air bag tubes 209 are provided with torque springs.
It should be noted that, when the vehicle slides to the detection plate 403, because the tire contacts with the friction block 402 and the friction force between the two is large, the detection plate 403 moves to one side of the curved auxiliary slide block 404 by the rolling friction force of the friction block 402 and the tire, and the detection plate 403 slides between the two sets of auxiliary sliding track frames 401, the curved auxiliary slide block 404 is a curved surface to facilitate the vehicle to move out of the vehicle detection mechanism 4, and it is easy to move to the front quickly by the curved surface, during this process, the weight of the vehicle presses the cross bar frame 103 through the detection plate 403, the ground surface of the detection plate 403 is higher than the upper surface of the auxiliary sliding track frame 401, which is the limit distance that the detection plate 403 moves downwards, so that the vehicle can press the detection plate 403 to move downwards, and the cross bar frame 103 drives the hollow insertion bar 201 to be inserted into the inner cavity of the receiving tube 202, in this case, because the material of the hollow insertion bar 201 is elastic material, the plasticity is good, the hollow inserting rod 201 is attached to the outer wall of the sealing outer frame 204, the inner wall of the hollow inserting rod 201 is closely attached to the outer wall of the air bag pipe 209, because the surface of the attached air bag pipe 209 is made of rubber, a torque spring installed inside the attached air bag pipe 209 is in a sealing state, the surface of the attached air bag pipe 209 is subjected to pressure, the torque spring and the air pressure inside the torque spring extrude the inner wall of the attached air bag pipe 209, so that the attached air bag pipe 209 is closely attached to the surface of the hollow inserting rod 201, the outer wall of the sealing outer frame 204 and the hollow inserting rod 201 are in a close sewing state, which is that after a single detection is completed, because the mass of an automobile is large, if the sealing is insufficient, more air leaks out after the hollow tube 205 and the inserting tube 203 are clamped in a close state in the later period, because the air flow of the hollow inserting rod 201 is small, the speed of recovering from the original position is slow, the vehicle is not convenient to detect back and forth, and the receiving tube 202 can slide on the auxiliary sliding groove of the positioning frame 306, the detection of the speed and the longitudinal pressure is not influenced;
in this case, the insertion tube 203 is inserted into the inner cavity of the hollow engaging tube 205, a part of the air bag 206 is inserted into the hollow engaging tube 205, the part is a pressure sensing surface, the insertion tube 203 extrudes the pressure sensing surface of the air bag 206, the connection between the pressure sensing surface and the inner wall of the hollow engaging tube 205 is wrapped by rubber, and the vertical pressure sensing assembly 207 is placed in the air bag 206 to prevent a large amount of air from entering, which is caused by the heavy weight of the vehicle, the air flow generated by the downward pressing of the hollow insertion rod 201 can cause errors to the test result, the air bag 206 is of model BNA-S22-DN20, so that the weight of the vehicle can be detected simply, and the detection data is accurate.
Referring to fig. 5-8, example 2: the pressure recovery mechanism 5 comprises a motor 501, an output end of the motor 501 is rotatably connected with a supporting rotating rod 502, the supporting rotating rod 502 is rotatably connected to one side of a main supporting frame 304, the outer surface of the supporting rotating rod 502 is rotatably connected with a belt 503, a limiting block is arranged at the joint of the supporting rotating rod 502 and the belt 503, the pressure recovery mechanism 5 further comprises a rotating frame 505 rotatably connected to one side of the main supporting frame 304, the belt 503 is rotatably connected to the outer surface of the rotating frame 505, a limiting block frame 504 is arranged at the joint of the rotating frame 505 and the belt 503, the limiting block frame 504 is fixedly connected to one side of a positioning supporting block 301, an engagement rod frame 103 is engaged with the outer side of the rotating frame 505, four groups of torque springs 507 are arranged on the outer side of the rotating frame 505, a corresponding number of curved air bag blocks 508 are arranged on the outer sides of the four groups of torque springs 507, a positioning snap ring 506 is fixedly connected to the outer side of the curved air bag blocks 508, and the positioning snap ring 506 is rotatably connected to the outer surface of the rotating frame 505.
It should be noted that, if the wheel slides on the surface of the auxiliary sliding track frame 401 along with the friction block 402 by the rolling friction force therebetween, the distance sliding on the surface of the auxiliary sliding track frame 401 is a detection distance, the detection plate 403 drives the rotating frame 505 to rotate clockwise by the engaging rod frame 103, the rotating frame 505 rotates clockwise for a distance, the rotating frame 505 records a single rotation speed, the model of the rotating frame 505 is an SJK-1 speed monitor, the vibration generated when the rotating frame 505 rotates is buffered by the elasticity of the torque spring 507 and the internal air pressure of the curved air bag block 508 due to the fact that the torque spring 507 and the curved air bag block 508 rotate together with the rotating frame 505, and the numerical detection deviation occurs due to the excessive vibration of the rotating frame 505 when the distance and the speed detected at a single time are sensed by the rotation of the rotating frame 505;
if a vehicle is seriously overloaded, the bearing capacity of the surface of the receiving pipe 202 is 20T to 40T, the hollow insertion rod 201 moves downwards deeper, the joining rod frame 103 deflects by a larger angle around the surface of the rotating frame 505, the rotating frame 505 drives the joining rod frame 103 to extrude upwards at the slotted hole of the prompting frame 101, and the joining rod frame 103 is matched with the slotted hole, so that the air flow in the prompting frame 101 is compressed upwards due to the fact that the joining rod frame 103 moves upwards, the warning plate 102 extends out of the prompting frame 101, and after a worker finds that the bridge deck is prevented from being continuously damaged, the worker takes emergency inspection to stand the horse;
in order to restore the original state of the engagement rod frame 103 and the warning plate 102, the motor 501 is controlled, the model of the motor 501 is JM3-711-2, the motor 501 drives the supporting rotating rod 502 to rotate counterclockwise, the supporting rotating rod 502 drives the rotating frame 505 to rotate counterclockwise through the rolling friction force between the supporting rotating rod 502 and the belt wheel 503, and the rotating frame 505 drives the engagement rod frame 103 to restore to the original state counterclockwise.
Establishing a mathematical model of the motor under a two-phase static coordinate system, wherein the mathematical model is expressed as follows:
in formulae (1) and (2), phisRepresents the stator flux linkage; psirRepresenting the rotor flux linkage; u. ofsRepresenting a voltage vector acting on the stator; j denotes a vector operation, d denotes a derivative operation, isRepresenting a stator current; r issRepresenting the stator resistance; rrRepresenting the rotor resistance; l is a radical of an alcoholsRepresenting the stator inductance; l is a radical of an alcoholrRepresenting the rotor inductance; l is a radical of an alcoholmRepresenting mutual inductance; omegarRepresenting the motor speed; σ represents the initial angle of the motor phase.
The electromagnetic relation of the motor is mastered by establishing a mathematical model of the motor under a two-phase static coordinate system, the control of the motor is realized, the proposed mathematical model is operated based on the existing theoretical basis, the understanding is simple, the operability of the motor control is strong, the reliable technical support is provided for the normal use of the system, and the mathematical model and the system can be popularized in a large range.
Referring to fig. 1-5, example 3: a pre-buried bridge periodic safety detection system and a method thereof comprise a pressure transmission assembly 1 and a mass pressure transmission mechanism 2, wherein the mass pressure transmission mechanism 2 is arranged on one side of the pressure transmission assembly 1, one side of the pressure transmission assembly 1 is fixedly connected with a pre-buried bridge mechanism 3, the top end of the pre-buried bridge mechanism 3 is connected with a vehicle detection mechanism 4 in a sliding manner, and the outer surface of the pressure transmission assembly 1 is provided with a pressure recovery mechanism 5;
the pressure transmission assembly 1 comprises a prompting frame 101, a slotted hole is formed in the prompting frame 101, a warning plate 102 is connected in the prompting frame 101 in a sliding mode through the slotted hole, a sealing rubber sleeve is arranged at the joint of the prompting frame 101 and the warning plate 102, an engaging rod frame 103 is arranged in the slotted hole of the prompting frame 101, the engaging rod frame 103 is located below the warning plate 102, one side of the engaging rod frame 103 penetrates through the slotted hole of the prompting frame 101, a rubber sleeve is arranged at the joint of the engaging rod frame 103 and a sliding rail, the engaging rod frame 103 and the rubber sleeve are arranged in a sealing state, an auxiliary pressing plate 104 is fixedly connected to the other side of the engaging rod frame 103, a movable connecting rod 105 is hinged to one side of the auxiliary pressing plate 104, a hollow clamping rod 106 is arranged on one side of the movable connecting rod 105, a nut rod is connected to one side of the hollow clamping rod 106 in a threaded mode, and a telescopic rubber rod 108 is fixedly connected to the outer surface of the auxiliary pressing plate 104, the output end of the telescopic rubber rod 108 is electrically connected with a Y longitudinal pressure sensing assembly 107.
It should be noted that, as the wheel carries the detecting plate 403 to slide towards the curved auxiliary sliding block 404, wherein the detecting plate 403 drives the movable connecting rod 105 to move towards one side of the Y longitudinal pressure sensing component 107 through the joint rod frame 103 via the auxiliary pressing plate 104, here, the joint of the movable connecting rod 105 and the hollow clamping rod 106 is slidable, the joint rod frame 103 moves up and down, the movable connecting rod 105 can also slide up and down simultaneously, one side of the hollow clamping rod 106 is fixed and can only rotate along with the nut rod, while the other side deflects along with the movable connecting rod 105, which limits the moving distance of the movable connecting rod 105, the auxiliary pressing plate 104 presses 108 the Y longitudinal pressure sensing component 107 by pressing the telescopic rubber rod, the type of the Y longitudinal pressure sensing component 107 is AW501062, which detects the pressure, because the weight of the vehicle is different, the speed is the same according to the inertia theorem F = MV, the larger the vehicle mass is, the larger the inertia is, the speed is detected independently, the emergency braking of the vehicle when an emergency problem occurs cannot be judged, and the sliding distance is safe or not, so that the longitudinal pressure of the vehicle is detected, and the vehicle data are detected comprehensively.
A pre-buried bridge periodic safety detection method comprises the following steps:
s1: when a bridge is built, the length of the bridge is L m, the width of the bridge is T m, N pre-buried bridge period safety detection devices are installed in corresponding installation intervals, N is a multiple of 4, the corresponding installation intervals are set to be an X transverse interval and a Y longitudinal interval, when the X transverse interval is installed, the number of the corresponding installation intervals is two, namely, a positive line and a negative line, the installation interval of every two devices in the X transverse interval is T/4 m, and the installation interval of every two devices in the Y longitudinal interval is L/N m;
s2: when each vehicle slides on the bridge, the wheel pair detection plate 403 of each vehicle generates downward pressure and forward friction;
s3: the method comprises the following steps that the downward pressing force of a detection plate passes through a vertical pressure sensing assembly 207, collected data are vehicle overall weight data which are recorded as M, the forward friction force of the detection plate passes through a Y longitudinal pressure sensing assembly 107 and a speed sensing assembly rotating frame 505, the collected data are recorded as Z, the numerical value statistics of the Z is two parts, one part is that the Y longitudinal pressure sensing assembly 107 is pressed longitudinally and represents the pressure value in the sliding process, and the other speed sensing assembly rotating frame 505 records the speed of a single detection plate driving a sliding frame to move to the end point of a movable distance;
s4: when Z exceeds the specified value of the bridge, the information is transmitted to the equipment control component I linked with the signal receiving component arranged in the bridge according to the signal receiving component information, the friction block 402 which is positioned in front of the running vehicle and is not stepped on is lifted to a height higher than the original height, the height range is 10 cm to 20 cm, the friction force contacted by the single vehicle is increased, the running speed of the single vehicle is reduced, or M exceeds the specified value of the bridge, the information is transmitted to the equipment control component II linked with the signal receiving component, the warning plate linked with the detection plate 403 bounces, the staff is prompted to pay attention to the warning plate, and the warning plate is processed. The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and the same embodiment and different embodiments of the invention can be combined mutually under the condition of no conflict;
and finally: the present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a pre-buried formula bridge cycle safety detection system which characterized in that: the device comprises a pressure transmission assembly (1) and a mass pressure transmission mechanism (2), wherein the mass pressure transmission mechanism (2) is arranged on one side of the pressure transmission assembly (1), one side of the pressure transmission assembly (1) is fixedly connected with a pre-buried bridge mechanism (3), the top end of the pre-buried bridge mechanism (3) is connected with a vehicle detection mechanism (4) in a sliding mode, and a pressure recovery mechanism (5) is arranged on the outer surface of the pressure transmission assembly (1).
2. The embedded bridge periodic safety detection system according to claim 1, wherein: the pressure transmission assembly (1) comprises a prompt frame (101), a slotted hole is formed in the prompt frame (101), a warning plate (102) is connected to the interior of the prompt frame (101) in a sliding mode through the slotted hole, a sealing rubber sleeve is arranged at the joint of the prompt frame (101) and the warning plate (102), an engaging rod frame (103) is arranged in the slotted hole of the prompt frame (101), the engaging rod frame (103) is located below the warning plate (102), the slotted hole of the prompt frame (101) is penetrated through one side of the engaging rod frame (103), the rubber sleeve is arranged at the joint of the engaging rod frame (103) and a sliding rail, the engaging rod frame (103) and the rubber sleeve are arranged in a sealing state, an auxiliary pressing plate (104) is fixedly connected to the other side of the engaging rod frame (103), a movable connecting rod (105) is hinged to one side of the auxiliary pressing plate (104), and a hollow engaging rod (106) is arranged on one side of the movable connecting rod (105), one side of the hollow clamping rod (106) is in threaded connection with a nut rod, the outer surface of the auxiliary pressing plate (104) is fixedly connected with a telescopic rubber rod (108), and the output end of the telescopic rubber rod (108) is electrically connected with a Y longitudinal pressure sensing assembly (107).
3. The embedded bridge periodic safety detection system according to claim 2, wherein: the mass pressure conduction mechanism (2) comprises a hollow inserted link (201), the hollow inserted link (201) is hinged to the bottom end of the joint link frame (103), the top end of the inside of the hollow inserted link (201) is fixedly connected with an insertion tube (203), the bottom end of the hollow inserted link (201) is connected with a receiving tube (202) in an inserting mode, the outer surface of the insertion tube (203) is connected with a clamping hollow tube (205) in an inserting mode, the outer side of the clamping hollow tube (205) is fixedly connected with four groups of air bags (206), the inside of the four groups of air bags (206) is provided with vertical pressure sensing assemblies (207) with corresponding quantity, the outer surface of the four groups of air bags (206) is provided with a sealing outer frame (204), the hollow inserted link (201) is attached to the outer wall of the sealing outer frame (204), the outer wall of the hollow inserted link (201) is attached with four groups of attaching air bag tubes (209), one side of the attaching air bag tubes (209) is fixedly connected with buffering air bags (208) with corresponding quantity, the buffering air bag (208) is fixedly connected to the inner side of the receiving pipe (202), and a torque spring is arranged in the inner cavity of the attaching air bag pipe (209); the embedded bridge mechanism (3) comprises two groups of positioning supporting blocks (301), the outer walls of the positioning supporting blocks (301) are in threaded connection with fit steel plates (303), the two groups of positioning supporting blocks (301) are fixedly connected through the fit steel plates (303), one side of each positioning supporting block (301) is provided with a corresponding sliding groove (302), and the bottom end of each corresponding sliding groove (302) is fixedly connected with a main supporting frame (304); the embedded bridge mechanism (3) further comprises a main supporting plate (305) fixedly connected to the bottom end of the main supporting frame (304), and a positioning frame (306) is connected to the outer surface of the main supporting plate (305) in a threaded mode.
4. The embedded bridge periodic safety detection system according to claim 3, wherein: the auxiliary sliding groove adaptive to the outer wall of the receiving pipe (202) is formed in the positioning frame (306), the receiving pipe (202) is arranged in a sliding state through the auxiliary sliding groove, a rubber speed limiting block is arranged at the joint of the receiving pipe (202) and the auxiliary sliding groove, one side of the joint rod frame (103) penetrates through the main support frame (304), a vertical groove for the joint rod frame (103) to slide up and down is formed in one side of the main support frame (304), a limiting groove for the hollow clamping rod (106) to rotate is formed in the main support frame (304), the hollow clamping rod (106) is rotatably connected to the inner wall of the main support frame (304) through a nut rod, the Y-shaped longitudinal pressure sensing assembly (107) is fixedly connected to the inner wall of the main support frame (304), and the prompt frame (101) is fixedly connected to the side wall of the main support frame (304).
5. The embedded bridge periodic safety detection system according to claim 4, wherein: the vehicle detection mechanism (4) comprises two auxiliary sliding track frames (401) fixedly connected to the inner sides of the corresponding sliding grooves (302), and a detection plate (403) is connected between the two auxiliary sliding track frames (401) in a sliding mode.
6. The embedded bridge periodic safety detection system according to claim 5, wherein: the vehicle detection mechanism (4) further comprises a plurality of groups of friction blocks (402) inserted on one side of the detection plate (403), a curved auxiliary sliding block (404) is fixedly connected at the joint of the auxiliary sliding track frame (401) and the positioning supporting block (301), the detection plate (403) is fixedly connected to the top end of the joint rod frame (103), and the detection plate (403) is higher than the position of the auxiliary sliding track frame (401).
7. The embedded bridge periodic safety detection system according to claim 6, wherein: pressure recovery mechanism (5) are including motor (501), the output of motor (501) rotates and is connected with support bull stick (502), support bull stick (502) rotate and connect one side at main support frame (304), the surface of supporting bull stick (502) rotates and is connected with wheel area (503), it is provided with the stopper with wheel area (503) junction to support bull stick (502).
8. The embedded bridge periodic safety detection system according to claim 7, wherein: the pressure recovery mechanism (5) further comprises a rotating frame (505) rotatably connected to one side of the main support frame (304), the belt (503) is rotatably connected to the outer surface of the rotating frame (505), a limiting block frame (504) is arranged at the connection position of the rotating frame (505) and the belt (503), and the limiting block frame (504) is fixedly connected to one side of the positioning support block (301).
9. The embedded bridge periodic safety detection system according to claim 8, wherein: the meshing of the joining rod frame (103) is arranged on the outer side of the rotating frame (505), four groups of torque springs (507) are arranged on the outer side of the curved air bag blocks (508) in corresponding quantity, a positioning snap ring (506) is fixedly connected to the outer side of the curved air bag blocks (508), and the positioning snap ring (506) is rotatably connected to the outer surface of the rotating frame (505).
10. An embedded bridge periodic safety detection method based on the embedded bridge periodic safety detection system of any one of claims 1-9, characterized by comprising the following steps:
s1: when a bridge is built, the length of the bridge is L m, the width of the bridge is T m, N pre-buried bridge period safety detection devices are installed in corresponding installation intervals, N is a multiple of 4, the corresponding installation intervals are set to be an X transverse interval and a Y longitudinal interval, when the X transverse interval is installed, the number of the corresponding installation intervals is two, namely, a positive line and a negative line, the installation interval of every two devices in the X transverse interval is T/4 m, and the installation interval of every two devices in the Y longitudinal interval is L/N m;
s2: when each vehicle slides on the bridge, the wheel pair detection plate (403) of each vehicle generates downward pressure and forward friction;
s3: the method comprises the following steps that the downward pressing force of a detection plate passes through a vertical pressure sensing assembly (207), collected data are vehicle overall weight data and are recorded as M, the detection plate receives a forward friction force and passes through a Y longitudinal pressure sensing assembly (107) and a speed sensing assembly rotating frame (505), the collected data are recorded as Z, the numerical statistics of the Z is divided into two parts, one part is that the Y longitudinal pressure sensing assembly (107) receives a longitudinal pressure and represents a pressure value in the sliding process, and the other speed sensing assembly rotating frame (505) records the speed of a single detection plate driving a sliding frame to move to the end point of a movable distance;
s4: when Z exceeds the specified value of the bridge, the information is transmitted to the equipment control component I linked with the signal receiving component according to the installation inside the bridge, the rest friction block (402) positioned in front of the running vehicle without treading rises to a height higher than the original height, the height range is 10 cm to 20 cm, the friction force contacted by the single vehicle is increased, the running speed of the single vehicle is reduced, or M exceeds the specified value of the bridge, the information is transmitted to the equipment control component II linked with the signal receiving component, the warning plate linked with the detection plate (403) bounces, the attention of a worker is prompted to the position, and the position is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519449.3A CN114777845A (en) | 2022-05-13 | 2022-05-13 | Embedded bridge period safety detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519449.3A CN114777845A (en) | 2022-05-13 | 2022-05-13 | Embedded bridge period safety detection system and method |
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| Publication Number | Publication Date |
|---|---|
| CN114777845A true CN114777845A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210519449.3A Withdrawn CN114777845A (en) | 2022-05-13 | 2022-05-13 | Embedded bridge period safety detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114777845A (en) |
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2022
- 2022-05-13 CN CN202210519449.3A patent/CN114777845A/en not_active Withdrawn
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