Automatic monitoring device and method for slippage of bridge support

Abstract

The invention discloses an automatic monitoring device for the slippage of a bridge support, and relates to the technical field of bridge detection, the automatic monitoring device comprises a bridge pier, the outer surface of the bridge pier is fixedly connected with a sliding assembly and a monitoring assembly, and the monitoring assembly comprises a mounting frame and a fixing rod; according to the bridge support, the sliding condition of the bridge support body can be detected in different directions in different modes when the visual sensor and the displacement sensor rotate along with the bearing ring, the middle part of the structure of the annular convex lens is thick, and the edge of the structure of the annular convex lens is thin, so that the bridge support body part can be amplified, and the detection accuracy is improved. The convex lens eyepiece can further amplify the real image formed by the annular convex lens and enables the final image to be within the shooting range of the visual sensor and become an upright dotted line, and the principle of the convex lens eyepiece can refer to the principle of a telescope, so that working personnel do not need to work high above the ground, the automatic monitoring effect is achieved, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge detection, and in particular to an automatic monitoring device and method for the slippage of bridge bearings. Background Art

[0002] The slip of bridge bearings refers to the horizontal displacement of the bridge superstructure at the bearings relative to the bridge substructure under the action of various external forces. The magnitude of the bearing slip reflects the stress state and deformation of the bridge structure. If the slip is too large, it may indicate that there is an abnormality in the bridge structure, such as bearing damage, uneven settlement of the substructure, and uneven stress on the superstructure. Therefore, monitoring the slip of bridge bearings can timely understand the operating status of the bridge and provide a basis for the maintenance and management of the bridge.

[0003] Existing, such as Chinese patent publication number: CN111780672A, discloses an automatic monitoring device for the slippage of highway bridge bearings, which belongs to the field of engineering construction monitoring. The present invention includes a scale projection device, a camera, a self-propelled track device, a motor and a battery, and a solar panel. The scale projection device projects the scale image onto the surface of the bridge bearing, and takes pictures or records the video through a camera fixed on a track trolley, reads the scale readings at the original corresponding positions of the upper and lower plates of the bridge bearing in the picture or video, and then calculates the amount of bearing slippage. A metal trough track is reasonably arranged and installed on the bottom surface of the bridge beam body, and the track trolley is driven by the motor to move with the scale projection device and the camera, and the bearing slippage changes of multiple surfaces of multiple bridge bearings are observed in turn, so as to achieve the purpose of automatic monitoring. The solar panel is used to charge the battery, and then the battery provides power to the motor, camera and scale projection device.

[0004] In the prior art, there are two common ways to detect the slippage of bridge bearings: first, the detection equipment is held manually, and the detection personnel are sent to the bearing for detection by lifting equipment. This detection method has great safety hazards. Each detection requires professional staff to operate, and is greatly affected by the environmental weather. The detection is difficult, so the detection interval is long, and it is difficult to perform high-frequency regular inspections. Second, a moving adsorption trolley moves under the bridge for detection. This method has high requirements on equipment, and the mobile trolley falls off from the bottom of the bridge, causing great losses. Therefore, a method that can ensure safety and facilitate detection is needed to detect the slippage of bridge bearings.

[0005] Therefore, we propose an automatic monitoring device and method for bridge bearing slippage in order to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic monitoring device and method for bridge bearing slippage, so as to solve the problem of lack of safety in the existing bridge bearing slippage detection method proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic monitoring device for the slippage of a bridge support, comprising a bridge pier, the outer surface of the pier is fixedly connected with a sliding component and a monitoring component, the monitoring component comprises a mounting frame and a fixing rod, the outer surface of the mounting frame is fixedly connected with a plurality of support rods, a fixing ring is fixedly connected between one ends of the plurality of support rods, an annular convex lens is fixedly connected to the top of the fixing ring, the middle part of the annular convex lens is thicker than the edge so that refraction and convergence effects can be produced when light passes through, a reinforcing ring is fixedly connected to the top of the annular convex lens, a convex eyepiece is fixedly connected to one end of the fixing rod, and the convex eyepiece is used to further magnify the real image formed by the annular convex lens.

[0008] Preferably, the top of the bridge pier is fixedly connected to a bridge support body, and the bridge support body is used to provide stable support for the bridge beam, and the top of the bridge support body is fixedly connected to the bridge deck.

[0009] Preferably, the installation frame is fixedly installed on the outer surface of the pier near the top, and the fixing ring and the reinforcement ring are both made of stainless steel metal.

[0010] Preferably, the sliding assembly includes a support frame, and the support frame is used to enhance the support performance. The support frame is fixedly connected to the outside of the pier, and a plurality of reinforcing rods are fixedly connected to the outer surface of the support frame. A support ring is fixedly connected between one ends of the plurality of reinforcing rods. A limiting groove is provided on the outer surface of the support ring, and the inner wall of the limiting groove is rotatably connected to a limiting slip ring, and a supporting ring is fixedly connected to the outer surface of the limiting slip ring.

[0011] Preferably, a support column is fixedly connected to the top of the supporting ring near one side, a visual sensor is arranged at one end of the support column, and the visual sensor is used to monitor the slippage of the bridge bearing body, and the fixing rod is fixedly connected to the bracket of the visual sensor.

[0012] Preferably, a first mounting plate is fixedly connected to the top of the supporting ring near the other side, a displacement sensor is arranged on the top of the first mounting plate, and the displacement sensor is used to capture tiny displacement changes of the bridge bearing body.

[0013] Preferably, a second mounting plate is fixedly connected to the top of the supporting ring near the first mounting plate, a magnetic isolator is arranged on the top of the second mounting plate, and the magnetic isolator is used to resist strong electromagnetic interference to the displacement sensor.

[0014] Preferably, a plurality of driven tooth grooves are provided at the bottom of the supporting ring, a protective cover is fixedly connected to the outer surface of one side of the pier, a driving motor is arranged inside the protective cover, an output shaft of the driving motor is fixedly connected to a driving gear, a rotating groove is provided on one side of the driving gear, and a rotating block is rotatably connected inside the rotating groove.

[0015] Preferably, the outer surface of the rotating block is fixedly connected to a stabilizing plate, the outer surface of the stabilizing plate is fixedly connected to a plurality of connecting rods, the plurality of connecting rods are all fixedly connected to the outside of the protective cover, and the outer surface of the driving gear is meshingly connected to the inner walls of a plurality of driven tooth grooves.

[0016] The method for using the automatic monitoring device for bridge bearing slippage comprises the following steps:

[0017] S1. Start the driving motor so that the output shaft of the driving motor drives the driving gear to rotate. Since the teeth of the driving gear and the driven gear grooves are correspondingly engaged, the supporting ring will rotate under the rotation of the driving gear.

[0018] S2. Install the visual sensor on the supporting ring through the support column, and then install the displacement sensor and magnetic isolator on the other side of the supporting ring. Then, the visual sensor and displacement sensor can detect the sliding of the bridge support body in different directions and in different ways when following the rotation of the supporting ring. The visual sensor can capture the image of the bridge support body and transmit the image information wirelessly to the inspection staff. The visual sensor can intuitively record the situation of the bridge support body and the surrounding area. By analyzing the continuous images, it can be observed whether the bridge support body has obvious displacement;

[0019] S3. The displacement sensor can detect the slippage of the bridge support body. The displacement sensor can continuously monitor the bridge support body and collect the displacement data of the bridge support body in real time. The displacement sensor converts the measured displacement signal into an electrical signal, which is collected and stored by the data acquisition device. When using the sensor, the magnetic isolator is used to prevent external electromagnetic interference from entering the sensor system and affecting the accuracy of the visual sensor and displacement sensor monitoring.

[0020] S4. Finally, the annular convex lens is thicker in the middle and thinner at the edges, so it will magnify the main part of the bridge support. At the same time, the convex eyepiece can further magnify the real image formed by the annular convex lens and make the final image within the range of the visual sensor, which has the effect of automatic monitoring.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When in use, the visual sensor and displacement sensor can detect the slip of the bridge support body in different directions and in different ways while following the rotation of the support ring. The structure of the annular convex lens is thicker in the middle and thinner at the edge, so it will magnify the main part of the bridge support, and the convex eyepiece can further magnify the real image formed by the annular convex lens, and make the final image within the range of the visual sensor, and become a positive dotted line. Its principle can refer to the principle of the telescope, so there is no need for workers to work at high altitudes, it has the effect of automatic monitoring, and improves safety;

[0023] 2. When in use, the driving motor is started to drive the active gear to rotate. The protective cover can prevent rain and dust from corroding the driving motor, and the active gear is rotated on the outside of the rotating block to improve stability and support. Since the teeth of the active gear and the driven gear groove are correspondingly engaged, the supporting ring will rotate under the rotation of the active gear. In addition, the limit slip ring will not fall off when rotating inside the limit groove. The structures of the two are interlocking, which has the advantage of preventing falling off.

[0024] 3. When in use, the visual sensor can capture the image of the bridge support body and transmit the image information wirelessly to the inspection staff. The visual sensor can intuitively record the situation of the bridge support body and the surrounding area. By analyzing the continuous images, it can be observed whether the bridge support body has obvious displacement. The visual sensor, displacement sensor and magnetic isolator are all connected to the external control device by wireless connection, so they can be remotely monitored, which is convenient for the inspection personnel to check the status of the bridge support body at any time. At the same time, the displacement sensor can detect the slippage of the bridge support body. The displacement sensor can continuously monitor the bridge support body and collect the displacement data of the bridge support body in real time. The displacement sensor converts the measured displacement signal into an electrical signal, which is collected and stored by the data acquisition equipment. When using the sensor, the magnetic isolator can prevent external electromagnetic interference from entering the sensor system to avoid external electromagnetic interference affecting the accuracy of the visual sensor and displacement sensor monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front perspective view of the automatic monitoring device for bridge bearing slippage of the present invention;

[0026] Figure 2 A side perspective view of the support portion of the automatic monitoring device for bridge support slippage of the present invention;

[0027] Figure 3 It is a side perspective view of a monitoring component portion of the automatic monitoring device for bridge bearing slippage of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the monitoring component of the automatic monitoring device for bridge bearing slippage of the present invention;

[0029] Figure 5 A top view of the monitoring part of the automatic monitoring device for bridge bearing slippage of the present invention;

[0030] Figure 6 A partial three-dimensional diagram of a magnetic isolator of the automatic monitoring device for bridge bearing slippage of the present invention;

[0031] Figure 7 A partially cutaway stereoscopic view of a sliding assembly of the automatic monitoring device for bridge bearing slippage of the present invention;

[0032] Figure 8 It is a bottom-up stereoscopic diagram of the structure of the sliding assembly part of the automatic monitoring device for the bridge bearing slippage of the present invention;

[0033] Fig. 9 This is a sectional stereoscopic view of the structure of the protective cover portion of the automatic monitoring device for bridge bearing slippage of the present invention.

[0034] In the figure:

[0035] 1. Sliding assembly; 101. Support frame; 102. Reinforcing rod; 103. Support ring; 104. Limiting groove; 105. Limiting slip ring; 106. Support ring; 107. Driven gear groove; 108. Protective cover; 109. Driving gear; 110. Connecting rod; 111. Stabilizing plate; 112. Driving motor; 113. Rotating groove; 114. Rotating block; 2. Monitoring assembly; 201. Mounting frame; 202. Support rod; 203. Fixed ring; 204. Annular convex lens; 205. Reinforcing ring; 206. Fixed rod; 207. Convex eyepiece; 3. Visual sensor; 4. Support column; 5. First mounting plate; 6. Displacement sensor; 7. Second mounting plate; 8. Magnetic isolator; 9. Bridge pier; 10. Bridge deck; 11. Bridge support body. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Reference Figure 1 - Fig. 9As shown, the present invention provides a technical solution: an automatic monitoring device for the slippage of a bridge support, comprising a bridge pier 9, a sliding component 1 and a monitoring component 2 are fixedly connected to the outer surface of the bridge pier 9, the monitoring component 2 comprises a mounting frame 201 and a fixing rod 206, a plurality of support rods 202 are fixedly connected to the outer surface of the mounting frame 201, a fixing ring 203 is fixedly connected between one ends of the plurality of support rods 202, an annular convex lens 204 is fixedly connected to the top of the fixing ring 203, the middle part of the annular convex lens 204 is thicker than the edge so that the light can produce a refraction and convergence effect when passing through The top of the annular convex lens 204 is fixedly connected with a reinforcing ring 205, one end of the fixing rod 206 is fixedly connected with a convex eyepiece 207, and the convex eyepiece 207 is used to further magnify the real image formed by the annular convex lens 204, the top of the pier 9 is fixedly connected with a bridge support body 11, and the bridge support body 11 is used to provide stable support for the bridge beam, the top of the bridge support body 11 is fixedly connected with the bridge deck 10, the mounting frame 201 is fixedly installed on the outer surface of the pier 9 near the top, and the fixing ring 203 and the reinforcing ring 205 are both made of stainless steel metal.

[0038] In this embodiment, when in use, the mounting frame 201 is first fixedly clamped on the outside of the bridge pier 9 near the bridge support body 11, and then the fixing ring 203 is supported by the fixed support of multiple support rods 202. At this time, the position of the fixing ring 203 is stable, so the annular convex lens 204 and the reinforcing ring 205 fixed on the top of the fixing ring 203 are also stable. The structure of the annular convex lens 204 is thicker in the middle part and thinner at the edge, so it will partially magnify the bridge support body 11, but the magnified image is inverted. This is because the nearly parallel light emitted from the bridge support body 11 enters the annular convex lens 204, is refracted and converged to the vicinity of the focus of the lens, forming an inverted real image. However, the focal length of the convex eyepiece 207 is shorter, which can further magnify the real image formed by the annular convex lens 204, and make the final image within the range of the visual sensor 3, and become a positive dotted line. The principle can refer to the principle of the telescope, so there is no need for workers to work at high altitudes, it has the effect of automatic monitoring, and improves safety.

[0039] Embodiment 2: Figure 1 - Fig. 9As shown, the sliding assembly 1 includes a support frame 101, and the support frame 101 is used to enhance the support performance. The support frame 101 is fixedly connected to the outside of the pier 9. The outer surface of the support frame 101 is fixedly connected to a plurality of reinforcing rods 102. A support ring 103 is fixedly connected between one end of the plurality of reinforcing rods 102. A limiting groove 104 is provided on the outer surface of the support ring 103. The inner wall of the limiting groove 104 is rotatably connected to a limiting slip ring 105. The outer surface of the limiting slip ring 105 is fixedly connected to a supporting ring 106. The bottom of the supporting ring 106 is provided with a plurality of driven tooth grooves 107. One side of the pier 9 A protective cover 108 is fixedly connected to the outer surface, a driving motor 112 is arranged inside the protective cover 108, an output shaft of the driving motor 112 is fixedly connected to a driving gear 109, a rotating groove 113 is opened on one side of the driving gear 109, a rotating block 114 is rotatably connected inside the rotating groove 113, an outer surface of the rotating block 114 is fixedly connected to a stabilizing plate 111, an outer surface of the stabilizing plate 111 is fixedly connected to a plurality of connecting rods 110, the plurality of connecting rods 110 are all fixedly connected to the outside of the protective cover 108, and the outer surface of the driving gear 109 is meshedly connected to the inner walls of a plurality of driven tooth grooves 107.

[0040] In this embodiment, when in use, the drive motor 112 is started to rotate the output shaft of the drive motor 112, thereby driving the active gear 109 to rotate, wherein the outside of the drive motor 112 is protected by the protective cover 108, which can prevent rain and dust from corroding the drive motor 112, and the active gear 109 is rotated on the outside of the rotating block 114, thereby improving stability and support. Since the teeth of the active gear 109 and the driven tooth grooves 107 are correspondingly engaged, the supporting ring 106 will rotate under the rotation of the active gear 109. In addition, the limiting slip ring 105 will not fall off when rotating inside the limiting groove 104. The structures of the two are interlocking, which has the advantage of preventing falling off. Then, the support frame 101 is clamped on the outside of the pier 9 to complete the installation of the entire sliding assembly 1.

[0041] Embodiment three: Figure 1 - Fig. 9 As shown, a support column 4 is fixedly connected to the top of the supporting ring 106 near one side, a visual sensor 3 is arranged at one end of the supporting column 4, and the visual sensor 3 is used to monitor the slippage of the bridge bearing body 11, the fixing rod 206 is fixedly connected to the bracket of the visual sensor 3, a first mounting plate 5 is fixedly connected to the top of the supporting ring 106 near the other side, a displacement sensor 6 is arranged on the top of the first mounting plate 5, and the displacement sensor 6 is used to capture the slight displacement changes of the bridge bearing body 11, a second mounting plate 7 is fixedly connected to the top of the supporting ring 106 near the first mounting plate 5, a magnetic isolator 8 is arranged on the top of the second mounting plate 7, and the magnetic isolator 8 is used to resist the strong electromagnetic interference with the displacement sensor 6.

[0042] In this embodiment, when in use, first, the visual sensor 3 is installed on the supporting ring 106 through the supporting column 4, and then the displacement sensor 6 and the magnetic isolator 8 are installed on the other side of the supporting ring 106. Then, the visual sensor 3 and the displacement sensor 6 can detect the slippage of the bridge support body 11 in different directions and in different ways when following the rotation of the supporting ring 106. The visual sensor 3 can capture the image of the bridge support body 11 and wirelessly transmit the image information to the detection staff. The visual sensor 3 can intuitively record the conditions of the bridge support body 11 and the surrounding area. By analyzing the continuous images, it can be observed whether the bridge support body 11 has obvious displacement. The visual sensor 3, the displacement sensor 6 and the magnetic isolator 8 are all connected to the external control device by wireless connection, so they can be remotely monitored, which is convenient for the detection personnel to check the bridge support body 11 at any time. state, at the same time, the displacement sensor 6 can detect the slippage of the bridge support body 11, the displacement sensor 6 can continuously monitor the bridge support body 11, and collect the displacement data of the bridge support body 11 in real time. The displacement sensor 6 converts the measured displacement signal into an electrical signal, which is collected and stored by the data acquisition device. When using the sensor, the magnetic isolator 8 can prevent external electromagnetic interference from entering the sensor system, so as to avoid external electromagnetic interference affecting the monitoring accuracy of the visual sensor 3 and the displacement sensor 6. Among them, the model of the visual sensor 3 is QJNN, which has the advantages of wireless control and waterproof monitoring. The displacement sensor 6 adopts NL's wireless sensor. The wireless connection method has the advantage of simplicity. When the supporting ring 106 drives the visual sensor 3 and the displacement sensor 6 to rotate, there is no need to pull long wires and move at the same time, so there is no leakage caused by wire entanglement and damage.

[0043] The method and working principle of the device are as follows: when in use, the driving motor 112 is started to rotate the output shaft of the driving motor 112, thereby driving the driving gear 109 to rotate, wherein the outside of the driving motor 112 is protected by the protective cover 108, and the driving gear 109 is sleeved on the outside of the rotating block 114 and rotated. Since the teeth of the driving gear 109 and the driven tooth grooves 107 are correspondingly engaged, the supporting ring 106 will rotate under the rotation of the driving gear 109. In addition, the limiting slip ring 105 will not fall off when rotating inside the limiting groove 104. Then, the support frame 101 is hooped on the outside of the bridge pier 9 to complete the installation of the entire sliding assembly 1. When in use, first, the visual The sensor 3 is installed on the supporting ring 106, and then the displacement sensor 6 and the magnetic isolator 8 are installed on the other side of the supporting ring 106. Then, the visual sensor 3 and the displacement sensor 6 can detect the slippage of the bridge support body 11 in different directions and in different ways when following the rotation of the supporting ring 106. The visual sensor 3 can capture the image of the bridge support body 11 and transmit the image information wirelessly to the detection staff. The visual sensor 3 can intuitively record the conditions of the bridge support body 11 and the surrounding area. By analyzing the continuous images, it can be observed whether the bridge support body 11 has obvious displacement. The visual sensor 3, the displacement sensor 6 and the magnetic isolator 8 are all connected to the outside by wireless. The control device is connected, so it can be remotely monitored, which is convenient for the inspection personnel to check the status of the bridge support body 11 at any time. At the same time, the displacement sensor 6 can detect the slippage of the bridge support body 11. The displacement sensor 6 can continuously monitor the bridge support body 11 and collect the displacement data of the bridge support body 11 in real time. The displacement sensor 6 converts the measured displacement signal into an electrical signal, which is collected and stored by the data acquisition device. When using the sensor, the magnetic isolator 8 can prevent external electromagnetic interference from entering the sensor system. When in use, the installation frame 201 must first be fixed to the outside of the pier 9 near the bridge support body 11, and then fixed with the support of multiple support rods 202. The support for the fixing ring 203 is completed. At this time, the position of the fixing ring 203 is stable, so the annular convex lens 204 and the reinforcing ring 205 fixed on the top of the fixing ring 203 are also stable. The structure of the annular convex lens 204 is thicker in the middle part and thinner at the edge, so it will partially magnify the bridge support body 11, but the magnified image is inverted. This is because the nearly parallel light emitted from the bridge support body 11 enters the annular convex lens 204, is refracted and converges near the focus of the lens, forming an inverted real image, but the convex eyepiece 207 has a shorter focal length, which can further magnify the real image formed by the annular convex lens 204, and make the final image within the range of the visual sensor 3, and become a positive dotted line.

[0044] The wiring diagram of the drive motor 112, visual sensor 3, displacement sensor 6 and magnetic isolator 8 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the drive motor 112, visual sensor 3, displacement sensor 6 and magnetic isolator 8 will not be explained in detail.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic monitoring device for bridge bearing slippage, comprising a bridge pier (9), wherein a sliding component (1) and a monitoring component (2) are fixedly connected to the outer surface of the bridge pier (9), characterized in that: The monitoring component (2) comprises a mounting frame (201) and a fixing rod (206); a plurality of support rods (202) are fixedly connected to the outer surface of the mounting frame (201); a fixing ring (203) is fixedly connected between one ends of the plurality of support rods (202); an annular convex lens (204) is fixedly connected to the top of the fixing ring (203); the middle portion of the annular convex lens (204) is thicker than the edge so that light can be refracted and converged when passing through; a reinforcing ring (205) is fixedly connected to the top of the annular convex lens (204); a convex eyepiece (207) is fixedly connected to one end of the fixing rod (206); and the convex eyepiece (207) is used to further magnify the real image formed by the annular convex lens (204).

2. The automatic monitoring device for bridge bearing slippage according to claim 1 is characterized in that: The top of the bridge pier (9) is fixedly connected to a bridge support body (11), and the bridge support body (11) is used to provide stable support for the bridge beam body, and the top of the bridge support body (11) is fixedly connected to a bridge deck (10).

3. The automatic monitoring device for bridge bearing slippage according to claim 2 is characterized in that: The installation frame (201) is fixedly installed on the outer surface of the pier (9) near the top, and the fixing ring (203) and the reinforcement ring (205) are both made of stainless steel.

4. The automatic monitoring device for bridge bearing slippage according to claim 3 is characterized in that: The sliding assembly (1) comprises a support frame (101), and the support frame (101) is used to enhance support performance. The support frame (101) is fixedly connected to the outside of the pier (9). A plurality of reinforcing rods (102) are fixedly connected to the outer surface of the support frame (101). A support ring (103) is fixedly connected between one ends of the plurality of reinforcing rods (102). A limiting groove (104) is provided on the outer surface of the support ring (103). The inner wall of the limiting groove (104) is rotatably connected to a limiting slip ring (105). The outer surface of the limiting slip ring (105) is fixedly connected to a supporting ring (106).

5. The automatic monitoring device for bridge bearing slippage according to claim 4 is characterized in that: A support column (4) is fixedly connected to the top of the support ring (106) near one side, a visual sensor (3) is provided at one end of the support column (4), and the visual sensor (3) is used to monitor the slippage of the bridge support body (11), and the fixing rod (206) is fixedly connected to the bracket of the visual sensor (3).

6. The automatic monitoring device for bridge bearing slippage according to claim 5 is characterized in that: A first mounting plate (5) is fixedly connected to the top of the supporting ring (106) near the other side, and a displacement sensor (6) is arranged on the top of the first mounting plate (5), and the displacement sensor (6) is used to capture small displacement changes of the bridge bearing body (11).

7. The automatic monitoring device for bridge bearing slippage according to claim 6 is characterized in that: A second mounting plate (7) is fixedly connected to the top of the supporting ring (106) near the first mounting plate (5), and a magnetic isolator (8) is arranged on the top of the second mounting plate (7), and the magnetic isolator (8) is used to resist strong electromagnetic interference with the displacement sensor (6).

8. The automatic monitoring device for bridge bearing slippage according to claim 7 is characterized in that: A plurality of driven tooth grooves (107) are provided at the bottom of the supporting ring (106); a protective cover (108) is fixedly connected to the outer surface of one side of the pier (9); a driving motor (112) is arranged inside the protective cover (108); an output shaft of the driving motor (112) is fixedly connected to a driving gear (109); a rotating groove (113) is provided on one side of the driving gear (109); a rotating block (114) is rotatably connected inside the rotating groove (113).

9. The automatic monitoring device for bridge bearing slippage according to claim 8 is characterized in that: The outer surface of the rotating block (114) is fixedly connected to a stabilizing plate (111), the outer surface of the stabilizing plate (111) is fixedly connected to a plurality of connecting rods (110), the plurality of connecting rods (110) are all fixedly connected to the outside of the protective cover (108), and the outer surface of the driving gear (109) is meshingly connected to the inner walls of the plurality of driven tooth grooves (107).

10. A method for using an automatic monitoring device for bridge bearing slippage, characterized in that: The automatic monitoring device for bridge bearing slippage according to claim 9 is used, comprising the following steps: S1, by starting the driving motor (112), the output shaft of the driving motor (112) drives the driving gear (109) to rotate. Since the teeth of the driving gear (109) and the driven tooth grooves (107) are correspondingly engaged, the supporting ring (106) will rotate under the rotation of the driving gear (109); S2. The visual sensor (3) is installed on the supporting ring (106) through the support column (4), and then the displacement sensor (6) and the magnetic isolator (8) are installed on the other side of the supporting ring (106). Then, when the visual sensor (3) and the displacement sensor (6) rotate with the supporting ring (106), they can detect the sliding condition of the bridge support body (11) in different directions and in different ways. The visual sensor (3) can capture the image of the bridge support body (11) and transmit the image information wirelessly to the detection staff. The visual sensor (3) can intuitively record the condition of the bridge support body (11) and the surrounding area. By analyzing the continuous images, it can be observed whether the bridge support body (11) has obvious displacement. S3. The displacement sensor (6) can detect the slippage of the bridge support body (11). The displacement sensor (6) can continuously monitor the bridge support body (11) and collect the displacement data of the bridge support body (11) in real time. The displacement sensor (6) converts the measured displacement signal into an electrical signal, which is collected and stored by a data acquisition device. When the sensor is used, a magnetic isolator (8) is used to prevent external electromagnetic interference from entering the sensor system and affecting the accuracy of monitoring by the visual sensor (3) and the displacement sensor (6). S4. Finally, the annular convex lens (204) is thicker in the middle and thinner at the edges, so it will partially magnify the bridge support body (11). At the same time, the convex eyepiece (207) can further magnify the real image formed by the annular convex lens (204) and make the final image within the range of the visual sensor (3), thereby achieving an automatic monitoring effect.

Images