Bridge expansion joint deformation monitoring device

Abstract

The application relates to the technical field of bridge expansion joint monitoring, in particular to a bridge expansion joint deformation monitoring device, which comprises an infrared monitoring sensor, connecting structures are arranged in front and behind the infrared monitoring sensor, link rods are arranged on the two sides of the connecting structures, mounting structures are arranged on the left and right of the infrared monitoring sensor, and the two link rods are arranged between the two mounting structures. The bridge expansion joint deformation monitoring device can improve the mounting speed to a certain extent when workers install the monitoring equipment by matching the link rods and the mounting structures, can ensure that the central axis of the monitoring equipment coincides with the center line of the bridge expansion joint, avoids the deviation of the infrared emission angle, and improves the measuring accuracy to ensure the monitoring effect on the bridge expansion joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge expansion joint monitoring, in particular to a bridge expansion joint deformation monitoring device. BACKGROUND

[0002] A bridge is usually composed of a bridge deck structure and a pier. In daily use, the bridge will expand and contract due to temperature changes. To alleviate the structural rupture that may be caused by this phenomenon, the bridge is often designed in multiple sections, i.e., a gap is reserved between each section of the bridge body, which is called an expansion joint. To ensure the safety of the bridge, the width of the expansion joint needs to be continuously monitored. If the expansion joint becomes too wide or too narrow due to excessive expansion and contraction, it may damage the bridge structure and even cause safety accidents. Therefore, a special monitoring device must be used to measure the changes in the expansion joint in real time to ensure that it is always within a safe range.

[0003] At present, the displacement monitoring device commonly used in bridge construction is rigidly connected to the bridge body. When the bridge deforms due to thermal expansion and contraction, this rigid connection will force the monitoring device to deform rigidly, which will damage the equipment and affect its normal function and service life.

[0004] For example, a bridge construction displacement monitoring device with publication number CN118857113B includes an infrared monitoring sensor, a connection structure is arranged on the front and rear of the infrared monitoring sensor, the connection structure includes a fixed ball seat, a ball hinge body is rotatably connected inside the fixed ball seat, a retaining structure is arranged on the proximal end of two connecting rods two, the retaining structure includes a connecting ring one and a connecting ring two, the proximal end of two connecting rods two is fixedly connected with the connecting ring one, two rotating rods one are rotatably connected to the inner circle of the connecting ring one, the proximal end of two rotating rods one is rotatably connected with the outer surface of the connecting ring two, two rotating rods two are rotatably connected to the inner circle of the connecting ring two, a connecting body is rotatably connected to the proximal end of two rotating rods two, the bottom of the infrared monitoring sensor is fixedly connected with the top of the connecting body, and a counterweight is fixedly installed at the bottom of the connecting body.

[0005] However, we found in actual use that the fixed ball seat, as the basic installation component of the entire monitoring device, directly affects the monitoring accuracy. During installation, the two fixed ball seats must be accurately aligned and installed to ensure that the central axis of the infrared monitoring sensor coincides with the center line of the bridge expansion joint. Deviation in the installation position will cause the infrared emission angle to deviate, resulting in a cosine error, affecting the measurement results and reducing the monitoring effect on the bridge expansion joint.

[0006] Therefore, we propose a bridge expansion joint deformation monitoring device. SUMMARY

[0007] The technical problem to be solved by the present application is: how to design a bridge expansion joint deformation monitoring device which can avoid equipment damage and facilitate the installation of an infrared monitoring sensor.

[0008] To solve the above technical problems, the present application provides a bridge expansion joint deformation monitoring device, which comprises an infrared monitoring sensor, a connecting structure is arranged in front of and behind the infrared monitoring sensor, an adapter rod is arranged on the two sides of the connecting structure, an installation structure is arranged on the left and right sides of the infrared monitoring sensor, and the two adapter rods are arranged between the two installation structures.

[0009] In some embodiments, the installation structure comprises a positioning seat arranged on one side of the infrared monitoring sensor, a pre-positioning piece is arranged at the two ends of the positioning seat, an adjusting slot is formed in the middle of the positioning seat, a synchronous adjusting piece is arranged on the positioning seat, a receiving rod is arranged on the two sides of the synchronous adjusting piece, a clamping piece is arranged between the receiving rod and the synchronous adjusting piece, and a rotating positioning piece is arranged at the two ends of each receiving rod.

[0010] In some embodiments, displacement sliding grooves are formed on the two sides of the positioning seat, the pre-positioning piece comprises a positioning spring arranged in the displacement sliding groove, a pre-positioning rod is arranged at the end of the positioning spring, a plug-in groove is formed in the positioning seat and the pre-positioning rod, and a plug-in plate is connected to the positioning seat by a wire.

[0011] In some embodiments, displacement sliding grooves are formed on the two sides of the positioning seat, the synchronous adjusting piece comprises a rotating shaft rotatably arranged in the adjusting slot, the rotating shaft extends to the inside of the displacement sliding groove at the two ends, and different direction screws are arranged at the two ends of the rotating shaft, a screw sleeve is threadedly connected to the screw, and a sliding block connected to the screw sleeve is slidably arranged in the displacement sliding groove.

[0012] In some embodiments, the clamping piece comprises a plug-in plate two arranged on the receiving rod, a plug-in groove two is formed in the sliding block to cooperate with the plug-in plate two, a return spring is arranged in the plug-in groove two, a clamping block is arranged on the return spring, and a clamping groove is arranged on the plug-in plate two to cooperate with the clamping block.

[0013] In some embodiments, the rotating positioning piece comprises a rotating shaft rotatably arranged on the receiving rod, an installation plate is arranged on the rotating shaft, a torsional spring is sleeved outside the rotating shaft, and the two ends of the torsional spring are connected to the installation plate and the receiving rod, respectively.

[0014] In some embodiments, the receiving rod is provided with a socket on each side, the connecting rod is inserted into the two adjacent sockets, the connecting structure comprises a buffer provided on the connecting rod, the infrared monitoring sensor is provided with a holding structure at the bottom, vertical plates are provided on both sides of the holding structure, and an elastic member is provided between the vertical plates and the buffer.

[0015] In some embodiments, the buffer comprises a fixed shaft provided on the connecting rod, a shaft sleeve is slidably provided on the fixed shaft, a buffer spring is provided between the two shaft sleeves, and a deflection rod is rotatably provided on each of the shaft sleeves.

[0016] In some embodiments, the elastic member comprises a synchronous plate provided between the two connecting seats, an elastic rod is provided between the vertical plates and the synchronous plate, and a fastening bolt is provided on the elastic rod.

[0017] In some embodiments, the vertical plate comprises a vertical sliding frame provided at the end of the elastic rod and a vertical sliding plate provided on the holding structure, a wedge-shaped block is provided on the vertical sliding plate, a pressing plate that cooperates with the wedge-shaped block is provided on the synchronous plate, the vertical sliding plate extends to the outside of the vertical sliding frame at the top, flexible plates are provided on both sides of the top of the vertical sliding plate, the end of the flexible plate is bent to form a downward flange.

[0018] The present application has at least the following advantages:

[0019] 1. The cooperation of the connecting rod and the mounting structure improves the installation speed to a certain extent when the staff installs the monitoring device, and ensures that the central axis of the monitoring device coincides with the center line of the bridge expansion joint, avoids the deviation of the infrared emission angle, and improves the measurement accuracy to ensure the monitoring effect of the bridge expansion joint.

[0020] 2. Part of the mounting structure is designed to be detachable, which can be recycled and reused after the installation of the monitoring device. This design makes the parts of the device closely connected, the layout is reasonable, and the stability and modularity of the whole structure are ensured, which is convenient for installation, disassembly and maintenance.

[0021] 3. The pre-positioning member on the mounting structure allows the positioning seat to be in contact and fit on the end face of the two side beams in advance, providing a basis for accurate installation of the monitoring device and improving the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present application.Figure 1 Another structural diagram;

[0024] Figure 3 This is a schematic diagram of the overall top view structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall side view structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the overall front view structure of the present invention;

[0027] Figure 6 This is an exploded view of the overall structure of the present invention;

[0028] Figure 7 This is a partial cross-sectional view of a single positioning seat of the present invention;

[0029] Figure 8 For the present invention Figure 7 Another structural diagram;

[0030] Figure 9 For the present invention Figure 8 Enlarged structural diagram of area A in the middle;

[0031] Figure 10 This is a schematic diagram of the monitoring structure after the invention is installed;

[0032] Figure 11 For the present invention Figure 10 Schematic diagram of partial cross-section;

[0033] Figure 12 This is a schematic diagram of a single receiving rod structure of the present invention.

[0034] In the diagram: 1. Infrared monitoring sensor; 2. Connection structure; 21. Plug-in connector; 22. Retaining structure; 23. Vertical plate; 3. Buffer component; 31. Fixed shaft; 32. Bushing; 33. Buffer spring; 34. Deflection rod; 35. Connecting seat; 4. Telescopic component; 41. Synchronization plate; 42. Telescopic rod; 43. Fastening bolt; 5. Connecting rod; 6. Installation structure; 61. Positioning seat; 62. Receiving rod; 7. Pre-positioning component; 71. Positioning spring; 72. Pre-positioning rod; 7 3. Insertion slot one; 74. Insertion plate one; 8. Synchronous adjustment component; 81. Rotating shaft; 82. Screw; 83. Screw sleeve; 84. Sliding block; 9. Snap-fit ​​component; 91. Insertion plate two; 92. Insertion slot two; 93. Return spring; 94. Snap block; 95. Snap groove; 10. Rotary positioning component; 101. Rotating shaft; 102. Mounting plate; 103. Torsion spring; 11. Vertical sliding frame; 12. Vertical sliding plate; 13. Wedge block; 14. Extrusion plate; 15. Flexible plate body. Detailed Implementation

[0035] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0036] Embodiment 1

[0037] Please refer to Figures 1-12 The present application provides a technical solution:

[0038] The bridge expansion joint deformation monitoring device, including infrared monitoring sensor 1, infrared monitoring sensor 1 front and rear are provided with connecting structure 2, the connecting structure 2 both sides are provided with link rod 5, infrared monitoring sensor 1 left and right are provided with mounting structure 6, two The link rod 5 is arranged between two mounting structures 6.

[0039] Infrared monitoring sensor 1 is installed between two link rods 5 through connecting structure 2, and link rod 5 is fixed through mounting structure 6 and adjacent beam body end face, when infrared monitoring sensor 1 is installed, because the top of infrared monitoring sensor 1 is higher than the top height of link rod 5, therefore, the top of its infrared monitoring sensor 1 will emit infrared rays to both end beam body, the length of the infrared rays is the length of expansion joint, the length of the infrared rays is monitored, to monitor the displacement of beam body due to thermal expansion and contraction.

[0040] When the beam body expands, the two beam bodies emit positions to each other, drive two connecting structures 2 to move towards each other, and the infrared monitoring sensor 1 does not displace relative to the two beam bodies, and the infrared monitoring sensor 1 emits infrared rays, that is, the length of the infrared rays is shortened, that is, the expansion joint is narrowed, when the beam body is cold shrinkage, its movement is the same as the above, that is, the expansion joint is widened.

[0041] The mounting structure 6 includes a positioning seat 61 arranged on one side of the infrared monitoring sensor 1, the positioning seat 61 is provided with a pre-positioning piece 7 at both ends, the positioning seat 61 is provided with an adjusting groove in the middle, the positioning seat 61 is provided with a synchronous adjusting piece 8, the synchronous adjusting piece 8 is provided with a receiving rod 62 at both sides, the receiving rod 62 and the synchronous adjusting piece 8 are provided with a clamping piece 9, and the receiving rod 62 is provided with a rotating positioning piece 10 at both ends.

[0042] The positioning seat 61 is provided with a displacement sliding groove one on both sides, the pre-positioning part 7 comprises a positioning spring 71 arranged in the displacement sliding groove one, the end of the positioning spring 71 is provided with a pre-positioning rod 72, the positioning seat 61 and the pre-positioning rod 72 are provided with an insertion groove one 73, and the positioning seat 61 is connected with an insertion plate one 74 through a wire rope.

[0043] The displacement sliding groove one is arranged on the side of the positioning seat 61 on both sides, when the staff pulls out the insertion plate one 74 from the insertion groove one 73, the insertion plate one 74 cancels the locking of the pre-positioning rod 72, and under the elastic force of the positioning spring 71, the pre-positioning rod 72 is pushed out from the displacement sliding groove one until contacting the beam body end face, and the other side is also operated synchronously, so that one positioning seat 61 is fixed in the expansion joint between the adjacent beam bodies.

[0044] The displacement sliding groove one is arranged on the side of the positioning seat 61 on both sides, when the staff pulls out the insertion plate one 74 from the insertion groove one 73, the insertion plate one 74 cancels the locking of the pre-positioning rod 72, and under the elastic force of the positioning spring 71, the pre-positioning rod 72 is pushed out from the displacement sliding groove one until contacting the beam body end face, and the other side is also operated synchronously, so that one positioning seat 61 is fixed in the expansion joint between the adjacent beam bodies.

[0045] The positioning seat 61 is provided with a displacement sliding groove two on both sides, the synchronous adjusting part 8 comprises a rotating shaft 81 rotatably arranged in the adjusting slot, the rotating shaft 81 extends to the inside of the displacement sliding groove two at both ends, and the rotating shaft 81 is provided with different direction screw rods 82 at both ends, the screw rods 82 are both connected with a screw sleeve 83 in a threaded mode, and the displacement sliding groove two is slidably provided with a sliding block 84 connected with the screw sleeve 83.

[0046] The rotating shaft 81 is provided with a handle at the position of the adjusting slot, the handle can drive the rotating shaft 81 to rotate, the rotating shaft 81 drives the screw rods 82 on both sides to rotate synchronously, and under the guidance of the sliding block 84, the screw sleeve 83 and the sliding block 84 can slide in the displacement sliding groove two.

[0047] The clamping part 9 comprises an insertion plate two 91 arranged on the receiving rod 62, the sliding block 84 is provided with an insertion groove two 92 matched with the insertion plate two 91, the insertion groove two 92 is provided with a reset spring 93, the reset spring 93 is provided with a clamping block 94, and the insertion plate two 91 is provided with a clamping groove 95 matched with the clamping block 94.

[0048] The reset spring 93 and the clamping block 94 are arranged on both sides of the insertion plate two 91, meanwhile, the clamping groove 95 matched with the clamping block 94 is also arranged on both sides of the insertion plate two 91, and the top of the clamping block 94 is chamfered, so as to enter the insertion groove two 92 and separate from the clamping groove 95.

[0049] In the installation, the construction mark should be set on the bridge surface, and the vehicle and the like should be prohibited to pass through, so as to avoid affecting the installation progress and the installation precision, the worker first takes a positioning seat 61, then the worker pulls out the plug-in plate 1 from the plug-in slot 1, the plug-in plate 1 cancels the locking of the pre-positioning rod 72, and under the elastic force of the positioning spring 71, the pre-positioning rod 72 is pushed out from the displacement sliding groove 1 until the end surface of the beam body is contacted, and the other side is also operated synchronously, so that the positioning seat 61 is fixed in the expansion joint between the adjacent beam bodies.

[0050] After the positioning is completed, the rotating handle can drive the rotating shaft 81 to rotate, the rotating shaft 81 drives the screw rods 82 on the two sides to rotate synchronously, under the guidance of the sliding block 84, the screw sleeve 83 and the sliding block 84 can slide in the displacement sliding groove 2, so as to adjust the end of the receiving rod 62 to be attached to the end surface of the beam body, and after the adjustment is completed, the positioning seat 61 is taken down through the clamping piece 9.

[0051] Embodiment 2

[0052] Please refer to Figures 6-12 The application provides a technical scheme:

[0053] A bridge expansion joint deformation monitoring device, the rotating positioning piece 10 comprises a rotating shaft 101 rotatably arranged on the receiving rod 62, an installation plate 102 is arranged on the rotating shaft 101, a torsional spring 103 is sleeved outside the rotating shaft 101, and the two ends of the torsional spring 103 are connected with the installation plate 102 and the receiving rod 62 respectively.

[0054] When the receiving rod 62 is moved out of the displacement sliding groove 2, the installation plate 102 continuously contacts the two sides of the displacement sliding groove 2, when the installation plate 102 is separated from the displacement sliding groove 2, under the action of the torsional spring 103, the installation plate 102 is quickly ejected to be parallel to the end surface of the beam body, and then the installation work can be carried out through the through hole in the installation plate 102.

[0055] In order to ensure that the installation plate 102 can be attached to the receiving rod 62 after being rotated to fit the side wall of the expansion joint, the position of the installation plate 102 and the position of the receiving rod 62 close to the rotating shaft 101 are chamfered on one side, so that the other side is a right angle, and the angle control is accurate.

[0056] In addition, in order to improve the installation efficiency and reduce the situation that the worker carries fasteners, a storage cavity is arranged at the upper position of the receiving rod 62, the storage cavity is used for placing the fasteners required for installation, and of course other required tools can also be placed, which is not limited.

[0057] Embodiment 3

[0058] Please refer to Figures 5-11 The application provides a technical scheme:

[0059] The bridge expansion joint deformation monitoring device, the receiving rod 62 is provided with the plug-in seat 21 on the opposite side, the connecting rod 5 is inserted in the adjacent two plug-in seats 21 respectively, the connecting structure 2 includes the buffer 3 arranged on the connecting rod 5, the infrared monitoring sensor 1 bottom is provided with the holding structure 22, the holding structure 22 is provided with the vertical plate 23 on both sides, the vertical plate 23 and the buffer 3 are provided with the expansion piece 4.

[0060] The holding structure 22 is the structure in the background art, specifically, the holding structure 22 includes the connecting ring one and the connecting ring two, the two connecting rods two are fixedly connected with the connecting ring one on the close end, the inner circle of the connecting ring one is rotatably connected with two rotating rods one, the close end of the two rotating rods one is rotatably connected with the outer surface of the connecting ring two, the inner circle of the connecting ring two is rotatably connected with two rotating rods two, the close end of the two rotating rods two is rotatably connected with the connecting body, the bottom of the infrared monitoring sensor 1 is fixedly connected with the top of the connecting body, the bottom of the connecting body is fixedly installed with the counterweight, and details are not described here.

[0061] The connecting rod 5 is in the whole "I" structure, and the plug-in seat 21 is the corresponding shape on the two sides of the connecting rod 5, so as to ensure the stability of the connection between the connecting rod 5 and the plug-in seat 21 and ensure sufficient support strength.

[0062] The buffer 3 includes the fixed shaft 31 arranged on the connecting rod 5, the shaft sleeve 32 is slidably arranged on the fixed shaft 31, the buffer spring 33 is arranged between the two shaft sleeves 32, the deflection rod 34 is rotatably arranged on the shaft sleeve 32, and the connecting seat 35 is rotatably arranged on the end of the deflection rod 34.

[0063] When the beam body expands due to heat, the two end beam bodies approach the emission position in the opposite direction, drive the two connecting rods 5 to move in the opposite direction, the fixed shaft 31 on the connecting rod 5 moves synchronously, drives the deflection rod 34 to deflect, and extrudes the buffer spring 33, so as to buffer the connecting seat 35 (the infrared monitoring sensor 1). Because the infrared monitoring sensor 1 does not displace relative to the two beam bodies, the length of the infrared ray emitted by the infrared monitoring sensor 1 becomes shorter, that is, the expansion joint becomes narrower.

[0064] When the beam body shrinks due to cold, the two end beam bodies approach the emission position in the opposite direction, drive the two connecting rods 5 to move in the opposite direction, the fixed shaft 31 on the connecting rod 5 moves synchronously, drives the deflection rod 34 to deflect, and stretches the buffer spring 33, so as to buffer the connecting seat 35 (the infrared monitoring sensor 1). Because the infrared monitoring sensor 1 does not displace relative to the two beam bodies, the length of the infrared ray emitted by the infrared monitoring sensor 1 becomes longer, that is, the expansion joint becomes wider.

[0065] The telescopic part 4 comprises a synchronous plate 41 arranged between two connecting seats 35, a telescopic rod 42 is arranged between the vertical plate 23 and the synchronous plate 41, and a fastening bolt 43 is arranged on the telescopic rod 42.

[0066] Because the size of the expansion joint is different, the position of the receiving rod 62 is different when the infrared monitoring sensor 1 is installed, so it is necessary to adjust the distance between the synchronous plate 41 and the vertical plate 23 (the infrared monitoring sensor 1) during installation, so as to ensure that the buffer spring 33 is in the best working state after installation.

[0067] During installation, construction marks should be arranged on the bridge surface, and vehicles and the like should be prohibited to pass through, so as to avoid affecting the installation progress and installation accuracy, the worker first takes out a positioning seat 61, then the worker pulls out the plug-in plate I 74 from the plug-in slot I 73, the plug-in plate I 74 cancels the locking of the pre-positioning rod 72, and under the elastic force of the pre-positioning spring 71, the pre-positioning rod 72 is pushed out from the displacement sliding groove I until it contacts the beam end face, and the other side is operated synchronously, so as to fix the positioning seat 61 in the expansion joint between the adjacent beams.

[0068] After positioning, the rotating handle can drive the rotating shaft 81 to rotate, the rotating shaft 81 drives the screw rods 82 on both sides to rotate synchronously, and under the guidance of the sliding blocks 84, the screw sleeves 83 and the sliding blocks 84 can slide in the displacement sliding groove II, so as to adjust the end of the receiving rod 62 to be attached to the beam end face, and after adjustment, the positioning seat 61 is taken out by the clamping piece 9.

[0069] After the side fixing is completed, the second positioning seat 61 is taken out, and the two connecting rods 5 are inserted into the plug-in seat 21 of the group, and the size of the connecting rod 5 is used to adjust the position of the positioning seat 61, so that the other end of the connecting rod 5 can be inserted into the plug-in seat 21 of the positioning seat 61 which has been positioned, after the plug-in is completed, the plug-in plate I 74 on both sides is pulled out, the pre-positioning of the second positioning seat 61 is realized, and then the handle is rotated to adjust the receiving rod 62.

[0070] Example 4

[0071] Please refer to Figure 5 , Figure 10 and Figure 11 , the present application provides a technical solution:

[0072] The vertical plate 23 is composed of a vertical sliding frame 11 arranged at the end of the telescopic rod 42 and a vertical sliding plate 12 arranged on the holding structure 22, the vertical sliding plate 12 is provided with a wedge block 13, the synchronous plate 41 is provided with a pressing plate 14 matched with the wedge block 13, the top of the vertical sliding plate 12 extends to the outside of the vertical sliding frame 11, and the top of the vertical sliding plate 12 is provided with a flexible plate body 15 on both sides, the end of the flexible plate body 15 is bent to form a downward flange.

[0073] Rollers are arranged at the contact position of the pressing plate 14 and the wedge block 13 to reduce the friction between the pressing plate 14 and the wedge block 13.

[0074] The bending treatment of the flexible plate body 15 is to ensure that the vertical sliding plate 12 does not separate from the vertical sliding frame 11 during normal monitoring.

[0075] When the beam body is excessively expanded by heat, the expansion joint is narrowed, therefore, in order to protect the infrared monitoring sensor 1, a sinking technology of the infrared monitoring sensor 1 together with the holding structure 22 is designed, specifically:

[0076] When the beam body is expanded by heat, the two end beam bodies move to the emission position in the opposite direction, driving the two connecting rods 5 to move in the opposite direction, and the buffer spring 33 is difficult to maintain due to excessive expansion, at this time, the synchronous plate 41 together with the bottom pressing plate 14 also moves in the opposite direction, and the pressing plate 14 contacts and presses the wedge block 13 to drive it to move downward, at this time, the movement of the vertical sliding plate 12 can drive the flexible plate body 15 to deform, so that the vertical sliding plate 12 and the top flexible plate body 15 can move downward into the inside of the vertical sliding frame 11, realizing the sinking work of the infrared monitoring sensor 1 and the holding structure 22.

[0077] In addition, in order to avoid that the infrared monitoring sensor 1 and the holding structure 22 directly separate from the expansion joint, a notch is arranged on both sides of the vertical sliding frame 11, and a line is arranged at the bottom of the notch, the other end of the line is connected with the top of the vertical sliding plate 12, so as to realize the aerial suspension protection of the infrared monitoring sensor 1 and the holding structure 22.

[0078] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present application will be limited to the appended claims. It must be noted that, as used in the specification and the appended claims, the singular form "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a plurality of components. Similarly, the words "comprise," "comprises," and "comprising," as well as the words "include," "includes," and "including," when used in this specification and in the following claims, are intended to specify the presence of stated features, regions, integers, steps, operations, elements, or components, but they do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, or groups thereof. Furthermore, these terms do not necessarily denote the presence of anything that can be claimed as new. The meaning of "a," "an," and "the" also includes plural references and plural forms, for example, "a" or "an" entity includes one or more entities.

[0079] While the embodiments of the application have been shown and described herein, it is understood that modifications, substitutions, changes, and alterations can be made by those skilled in the art without departing from the spirit and scope of the present application.

Claims

1. A bridge expansion joint deformation monitoring device comprising an infrared monitoring sensor (1), characterized in that: The infrared monitoring sensor (1) is provided with a connecting structure (2) in front and back, the connecting structure (2) is provided with a connecting rod (5) on both sides, the infrared monitoring sensor (1) is provided with a mounting structure (6) on the left and right, the two connecting rods (5) are arranged between the two mounting structures (6); The mounting structure (6) includes a positioning seat (61) arranged on one side of the infrared monitoring sensor (1), the positioning seat (61) is provided with a pre-positioning part (7) at both ends, the positioning seat (61) is provided with an adjusting slot in the middle, the positioning seat (61) is provided with a synchronous adjusting part (8), the synchronous adjusting part (8) is provided with a receiving rod (62) on both sides, the receiving rod (62) and the synchronous adjusting part (8) are provided with a clamping part (9), and the receiving rod (62) is provided with a rotating positioning part (10) at both ends. The positioning seat (61) is provided with a displacement sliding groove two on both sides, the synchronous adjusting part (8) includes a rotating shaft (81) rotatably arranged in the adjusting slot, the rotating shaft (81) extends into the displacement sliding groove two at both ends, and the rotating shaft (81) is provided with a screw rod (82) with different directions at both ends, the screw rod (82) is threadedly connected with a sleeve (83), and the displacement sliding groove two is slidably provided with a sliding block (84) connected with the sleeve (83). The rotating positioning part (10) includes a rotating shaft (101) rotatably arranged on the receiving rod (62), the rotating shaft (101) is provided with a mounting plate (102), the rotating shaft (101) is sleeved with a torsional spring (103) outside, and the torsional spring (103) is connected with the mounting plate (102) and the receiving rod (62) at both ends.

2. The bridge joint deformation monitoring device of claim 1, wherein: The positioning seat (61) is provided with a displacement sliding groove one on both sides, the pre-positioning part (7) includes a positioning spring (71) arranged in the displacement sliding groove one, the positioning spring (71) is provided with a pre-positioning rod (72) at the end, the positioning seat (61) and the pre-positioning rod (72) are provided with a plug-in groove one (73), and the positioning seat (61) is connected with a plug-in plate one (74) through a wire rope.

3. The bridge joint deformation monitoring device of claim 1, wherein: The clamping part (9) includes a plug-in plate two (91) arranged on the receiving rod (62), the sliding block (84) is provided with a plug-in groove two (92) matched with the plug-in plate two (91), the plug-in groove two (92) is provided with a reset spring (93), the reset spring (93) is provided with a clamping block (94), and the plug-in plate two (91) is provided with a clamping groove (95) matched with the clamping block (94).

4. The bridge joint deformation monitoring device of claim 1, wherein: The receiving rod (62) is provided with a plug-in seat (21) on the opposite side, the connecting rod (5) is inserted into the adjacent two plug-in seats (21) at both ends, the connecting structure (2) includes a buffer (3) arranged on the connecting rod (5), the infrared monitoring sensor (1) is provided with a retaining structure (22) at the bottom, the retaining structure (22) is provided with a vertical plate (23) on both sides, and the vertical plate (23) and the buffer (3) are provided with a telescopic part (4).

5. The bridge joint deformation monitoring device of claim 4, wherein: The buffer piece (3) comprises a fixing shaft (31) arranged on the connecting rod (5), a shaft sleeve (32) is slidably arranged on the fixing shaft (31), a buffer spring (33) is arranged between the two shaft sleeves (32), and a deflection rod (34) is rotatably arranged on the shaft sleeve (32).

6. The bridge joint deformation monitoring device of claim 5, wherein: The telescopic piece (4) comprises a synchronous plate (41) arranged between the two connecting seats (35), and a telescopic rod (42) is arranged between the vertical plate (23) and the synchronous plate (41), and the telescopic rod (42) is provided with a fastening bolt (43).

7. The bridge joint deformation monitoring device of claim 6, wherein: The vertical plate (23) is composed of a vertical sliding frame (11) arranged at the end of the telescopic rod (42) and a vertical sliding plate (12) arranged on the retaining structure (22), the vertical sliding plate (12) is provided with a wedge block (13), the synchronous plate (41) is provided with a pressing plate (14) matched with the wedge block (13), the vertical sliding plate (12) extends to the outside of the vertical sliding frame (11) at the top, and flexible plate bodies (15) are arranged on both sides of the top of the vertical sliding plate (12), and the end of the flexible plate body (15) is bent to form a downward flange.

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