Intelligent perception device and method for bearing capacity of pot rubber bearing

Abstract

The present invention discloses an intelligent perception device and method for the bearing capacity of a pot rubber bearing, which includes a bottom basin, a rubber plate placed in the bottom basin, and an upper seat plate placed on the upper end surface of the rubber plate and used in cooperation with the bottom basin; a cavity is also provided in the rubber plate, and a cable groove extends from one side of the cavity and horizontally passes through the rubber plate and the side wall of the bottom basin to communicate with the outside; a metal plate is further installed on the upper surface of the cavity, and a force measuring component is correspondingly installed on the lower surface of the cavity, and the force measuring component is correspondingly in contact with the metal plate. The bearing capacity perception device and perception method of the pot rubber bearing of the present invention are integrated technical solutions. The force measuring components located in the rubber of the pot bearing share the total force borne by the bearing according to the ratio of their areas, and the measured force of the force measuring components is within its range, which can provide high-precision force measurement data.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge traffic facilities and measurement, and particularly relates to an intelligent perception device and method for the bearing capacity of a pot rubber bearing. Background Art

[0002] At present, the bridge construction in China has developed rapidly. Bridges play a crucial role in alleviating the highway traffic load and ensuring the smooth development of transportation operations. A bridge generally consists of a bridge span structure, also known as the superstructure, piers and abutments, also known as the substructure, pier and abutment foundations, and bearings, etc. Among them, the bearing is an important force-transferring structural component of the bridge that connects the superstructure and the substructure. The bearing is located between the bridge and the cushion stone. It can reliably transfer the load and deformation borne by the bridge superstructure to the bridge substructure, and at the same time ensure the free deformation of the bridge superstructure under the action of factors such as load, temperature change, and concrete shrinkage, so that the actual stress situation of the structure conforms to the calculation diagram, playing a buffering role and protecting the beam end and pier cap from damage.

[0003] However, in recent years, bridge collapse accidents have occurred frequently. It is difficult to monitor the actual situation of bridges, and it is impossible to take timely measures to prevent bridge collapses. Therefore, the resulting loss of life and property is immeasurable. Bridge accidents are directly related to the bearings. By monitoring the stress data of the bearings, the health status of the bridges can be evaluated to avoid bridge accidents.

[0004] At present, the bearings with force-measuring functions mainly use strain sensors pasted on the steel structure of the bearings, and use the strain generated by compression deformation and the Young's modulus of the material to inversely calculate the bearing force. However, due to the extremely small deformation of the steel structure, the maximum strain measurement value of the strain sensor is usually at the 100με level, and the accuracy of the strain sensor is usually at the 1με - 10με level. Therefore, it is impossible to accurately reflect the bearing force of the bearing. At the same time, temperature will also cause deformation of the steel structure of the bearing. In this method, the strain gauges cannot form a symmetric bridge circuit and are greatly affected by temperature. There is still a large room for improvement in the performance of the force-measuring bearings. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent perception device and method for the bearing capacity of a pot rubber bearing in view of the deficiencies of the prior art.

[0006] Technical solution: The technical solution adopted by the present invention to solve the problem is: a basin-type rubber support bearing capacity intelligent sensing device, including a bottom basin, a rubber plate placed in the bottom basin, and an upper seat plate placed on the upper end surface of the rubber plate and used in conjunction with the bottom basin; and a cavity is also provided in the rubber plate, and a cable groove is also extended on one side of the cavity, and the cable groove passes horizontally through the rubber plate and the side wall of the bottom basin and is connected to the outside; a metal plate is also installed on the upper surface of the cavity, and a force measuring element is correspondingly installed on the lower surface of the cavity, and the force measuring element is correspondingly in contact with the metal plate; it also includes an intelligent processing module, which is connected to a force measuring cable, and the force measuring cable enters the cavity in the rubber plate from the cable groove and is connected to the force measuring element.

[0007] Furthermore, the gap size between the two sides of the metal plate and the two side walls of the cavity is set to 0.001mm to 10mm.

[0008] Furthermore, the gap size between the two sides of the force measuring element and the two side walls of the cavity is set to 0.1 mm to 10 mm.

[0009] Furthermore, the metal plate, the force measuring element, and the upper and lower surfaces of the cavity can be configured to have a pre-tightening force or no pre-tightening force.

[0010] Furthermore, the force measuring element is configured as a force sensor, which is configured as an elastic body that deforms when subjected to force. The strain gauge sensor or fiber grating sensor pasted at the deformation position of the elastic body converts the signal into an electrical signal or an optical signal, and transmits the signal to the intelligent processing module through a force measuring cable.

[0011] Furthermore, the force measuring component can be set as a piezoresistor or a piezoelectric sensor, which changes its resistance or output charge when subjected to pressure, and transmits the signal to the intelligent processing module through a force measuring cable.

[0012] The present invention also provides an intelligent sensing method for the bearing capacity of a pot-type rubber bearing, characterized in that the intelligent processing module demodulates the electrical signal or optical signal of the force measuring component and converts it into the force F1 of the force measuring component, and calculates the force F2 of the pot-type rubber bearing based on F1. Where S1 is the cross-sectional area of the cavity, and S2 is the cross-sectional area of the rubber sheet.

[0013] Furthermore, the intelligent processing module demodulates the electrical signal or optical signal of the force measuring element and converts it into the force F1 of the force measuring element, and can also obtain a calibration formula by calibrating the pot-type rubber bearing, and calculate the force F2 of the pot-type rubber bearing according to F1 through the calibration formula.

[0014] Furthermore, the intelligent processing module can store the force F2 data of the pot-type rubber bearing.

[0015] Furthermore, the intelligent processing module can send the force F2 data of the pot rubber bearing to a remote server for storage and display via a 2G, 3G, 4G, 5G communication network or a limited broadband network.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] (1) The bearing capacity perception device and perception method of the pot rubber bearing of the present invention are integrated technical solutions. The force measuring component located in the rubber of the pot bearing shares the total force borne by the bearing according to the ratio of their areas. The measuring force of the force measuring component is within its range, and high-precision force measuring data can be provided.

[0018] (2) In the present invention, the area ratio of the pot rubber bearing to the force measuring sensor is relatively large, and the setting height of the force measuring component is also small, which has little impact on the overall structure of the pot rubber bearing and does not affect the normal use and service life of the bearing rubber and the bearing.

[0019] (3) The present invention also has data communication and data storage functions, and can record the force change situation of the bearing; and the force measuring component in the present invention can be set as a force measuring sensor or a piezoresistor and a piezoelectric sensor, which can accurately transmit deformation data and measure accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be further clarified below with reference to the drawings and specific embodiments. These embodiments are implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0022] As Figure 1 shown, a pot rubber bearing capacity intelligent perception device includes a bottom basin 13, a rubber plate 12 placed in the bottom basin 13, and an upper seat plate 11 placed on the upper end surface of the rubber plate 12 and cooperating with the bottom basin 13; and a cavity 14 is further provided in the rubber plate 12, and a cable groove 17 is further extended on one side of the cavity 14. The cable groove 17 horizontally penetrates through the rubber plate 12 and the side wall of the bottom basin 13 and communicates with the outside; a metal plate 15 is further installed on the upper surface of the cavity 14, and a force measuring component 16 is correspondingly installed on the lower surface of the cavity. The force measuring component 16 is correspondingly in contact with the metal plate 15; it further includes an intelligent processing module 19, and the intelligent processing module 19 is connected with a force measuring cable 18. The force measuring cable 18 enters the cavity 14 in the rubber plate 12 from the cable groove 17 and is connected with the force measuring component 16.

[0023] The gap size between the two sides of the metal plate 15 and the two side walls of the cavity 14 is set to 0.001mm to 10mm; the gap size between the two sides of the force measuring element 16 and the two side walls of the cavity 14 is set to 0.1mm to 10mm.

[0024] The metal plate 15 , the force measuring element 16 , and the upper and lower surfaces of the cavity 14 may all be configured to have a pre-tightening force or no pre-tightening force.

[0025] The force measuring element 16 is configured as a force sensor, which is configured as an elastic body that deforms when subjected to force. The strain gauge sensor or fiber grating sensor attached to the deformation position of the elastic body converts the signal into an electrical signal or an optical signal, and transmits the signal to the intelligent processing module 19 through the force measuring cable 18.

[0026] The force measuring element 16 can be set as a piezoresistor or a piezoelectric sensor. When subjected to pressure, the resistance or output charge changes, and the signal is transmitted to the intelligent processing module 19 through the force measuring cable 18.

[0027] The present invention also provides an intelligent sensing method for the bearing capacity of a pot-type rubber bearing, characterized in that the intelligent processing module 19 demodulates the electrical signal or optical signal of the force measuring element 16 and converts it into the force F1 of the force measuring element 16, and calculates the force F2 of the pot-type rubber bearing based on F1. Wherein S1 is the cross-sectional area of the cavity 14 , and S2 is the cross-sectional area of the rubber sheet 12 .

[0028] The intelligent processing module 19 demodulates the electrical signal or optical signal of the force measuring element 16 and converts it into the force F1 of the force measuring element 16. It can also obtain a calibration formula by calibrating the pot-type rubber bearing, and calculate the force F2 of the pot-type rubber bearing according to F1 through the calibration formula; the intelligent processing module 19 can store the force F2 data of the pot-type rubber bearing; the intelligent processing module 19 can send the force F2 data of the pot-type rubber bearing to a remote server for storage and display via a 2G, 3G, 4G, 5G communication network or a limited broadband network.

[0029] The operating principle of the present invention is as follows: When the upper seat plate is subjected to force, the rubber plate within it is also subjected to the same force, resulting in a high degree of internal stress uniformity. The rubber plate is provided with a cavity, with a metal plate on the upper surface and a force-measuring component on the lower surface. The force-measuring component is configured as a load cell, with the metal plate in contact with the load cell, which in turn contacts the lower surface of the cavity.

[0030] According to the relationship between force, strain and acting area, the ratio of the force measured by the force sensor to the force borne by the integral bearing is the ratio of the cross-sectional areas of the metal plate and the rubber plate inside the bearing; at the same time, the calibration formula of the force sensor and the bearing force can also be obtained through calibration, and the bearing force can be calculated using the calibration formula; the force sensor is an elastic body that will deform after being stressed, and is converted into an electrical or optical signal through a strain gauge sensor or a fiber Bragg grating sensor pasted at the deformed position of the elastic body; at the same time, the force measuring component can also be set as a piezoresistor or a piezoelectric sensor, and the resistance or output charge changes after being pressed; the intelligent processing module converts the electrical signal or optical signal into the force measurement data of the force sensor; the intelligent processing module can send the force data of the pot rubber bearing to a remote server for storage and display through 2G, 3G, 4G, 5G communication networks or a limited broadband network.

[0031] The bearing capacity perception device and perception method of the pot rubber bearing of the present invention are integrated technical solutions. The force measuring component located in the rubber of the pot bearing shares the total force borne by the bearing according to the ratio of their areas. The measured force of the force measuring component is within its range, and high-precision force measurement data can be provided; in the present invention, the area ratio of the pot rubber bearing to the force sensor is large, and the setting height of the force measuring component is small, which has little impact on the overall structure of the pot rubber bearing and does not affect the normal use and service life of the bearing rubber and the bearing; the present invention also has data communication and data storage functions, and can record the force change of the bearing; and the force measuring component in the present invention can be set as a force sensor or a piezoresistor and a piezoelectric sensor, which can accurately transmit deformation data and measure accurately.

[0032] The above specific implementation manner is only a preferred embodiment of the present invention, and is not used to limit the implementation and the scope of the claims of the present invention. Any equivalent changes and modifications made according to the content of the patent protection scope of the present invention application should be included in the scope of the present invention patent application.

Claims

1. An intelligent perception device for the bearing capacity of a pot rubber bearing, characterized in that, The invention comprises a bottom basin (13), a rubber plate (12) placed in the bottom basin (13), and an upper seat plate (11) placed on the upper end surface of the rubber plate (12) and used in conjunction with the bottom basin (13); a cavity (14) is further provided in the rubber plate (12), and a cable groove (17) is further extended on one side of the cavity (14), and the cable groove (17) passes through the rubber plate (12) and the side wall of the bottom basin (13) and is communicated with the outside; a metal plate (15) is further installed on the upper surface of the cavity (14), and a force measuring element (16) is correspondingly installed on the lower surface of the cavity, and the force measuring element (16) is correspondingly in contact with the metal plate (15); and an intelligent processing module (19) is also included, and the intelligent processing module (19) is connected to a force measuring cable (18), and the force measuring cable (18) enters the cavity (14) in the rubber plate (12) through the cable groove (17) and is connected to the force measuring element (16); The gap size between the two sides of the metal plate (15) and the two side walls of the cavity (14) is set to 0.001mm to 10mm; The gap size between the two sides of the force measuring element (16) and the two side walls of the cavity (14) is set to 0.1 mm to 10 mm; The metal plate (15), the force measuring element (16) and the upper and lower surfaces of the cavity (14) can be configured to have a pre-tightening force or no pre-tightening force; The force measuring element (16) is configured as a force sensor, which is configured as an elastic body that deforms when subjected to force, and converts the signal into an electrical signal or an optical signal through a strain gauge sensor or a fiber grating sensor attached to the deformation position of the elastic body, and transmits the signal to the intelligent processing module (19) through a force measuring cable (18); the force measuring element (16) can be configured as a piezoresistor or a piezoelectric sensor, and the resistance or output charge changes when subjected to pressure, and the signal is transmitted to the intelligent processing module (19) through the force measuring cable (18); The intelligent processing module (19) demodulates the electrical or optical signal of the force measuring component (16), converts it into the force F1 received by the force measuring component (16), and calculates the force F2 on the pot rubber bearing according to F1. where S1 is the cross-sectional area of the cavity (14) and S2 is the cross-sectional area of the rubber plate (12); The intelligent processing module (19) demodulates the electrical signal or optical signal of the force measuring element (16) and converts it into the force F1 of the force measuring element (16). The calibration formula can also be obtained by calibrating the pot-type rubber bearing, and the force F2 of the pot-type rubber bearing is calculated according to F1 through the calibration formula. The intelligent processing module (19) can store the force F2 data of the pot-type rubber bearing; The intelligent processing module (19) can send the force F2 data of the pot-type rubber bearing to a remote server for storage and display via a 2G, 3G, 4G, 5G communication network or a limited broadband network.

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