An intelligent monitoring device for expansion joints of roads and bridges

Abstract

The present invention relates to the technical field of expansion joints, and specifically discloses an intelligent monitoring device for expansion joints of road bridges, including a detection platform and a second mounting frame, a rectangular first base is fixedly arranged at the top of the detection platform, two mutually symmetrical electric slides are slidably connected to the top of the first base through two tracks, two sets of positioning mechanisms are symmetrically installed on the opposite sides of the two electric slides, a second mounting frame is slidably connected to the top of the detection platform, two reinforcements are symmetrically arranged on the top of the second mounting frame, four movable connecting rods symmetrically arranged in pairs are rotatably connected at both ends of the two reinforcements, a first connecting column is installed between the bottoms of the two movable connecting rods on the same reinforcement, mounting grooves are opened at both ends of the first connecting column, and a control mechanism is arranged in the mounting groove. The control mechanism can effectively lock or unlock the movable connecting rod and the fixed connecting rod, so that the posture of the second mounting frame can be changed under the premise of ensuring the overall structure stability and strength.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion joints, and in particular to an intelligent monitoring device for expansion joints of roads and bridges. Background Art

[0002] Road bridge expansion joints refer to devices that are set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridges to adjust the displacement and connection between structures caused by vehicle loads and road bridge materials in order to meet the requirements of road deformation. Once the expansion joint device is damaged, it will seriously affect driving safety. Therefore, expansion joints produced and shipped from the factory need to be load tested.

[0003] The existing load detection device fixes the expansion joint on the bearing plate of the testing machine through a clamping device, applies a force to a certain size continuously and evenly at a corresponding speed, holds the load for 15 minutes, and then unloads the force at a continuous and uniform speed, repeats the operation and observes. Usually, this type of testing machine is manually operated with a clamping component in a fixed position, and some testing machines that use an automatically operated clamping component lack certain limit and locking functions. When a load with changing direction and unstable output is applied, the clamping component will fail, which will have an adverse effect on the test results. Therefore, it is necessary to propose a road bridge expansion joint detection device that has both automated and intelligent operation and can prevent or limit the activity of the clamping component. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an intelligent monitoring device for expansion joints of road bridges.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A road bridge expansion joint intelligent monitoring device comprises a detection platform and a second mounting frame, wherein a rectangular first base is fixedly arranged on the top of the detection platform, two mutually symmetrical electric slides are slidably connected to the top of the first base through two tracks, two sets of positioning mechanisms are symmetrically installed on opposite sides of the two electric slides, a second mounting frame is slidably connected to the top of the detection platform, two reinforcement pieces are symmetrically arranged on the top of the second mounting frame, four movable connecting rods symmetrical in pairs are rotatably connected at both ends of the two reinforcement pieces, a first connecting column is installed between the bottoms of two movable connecting rods on the same reinforcement piece, mounting grooves are provided at both ends of the first connecting column, a control mechanism is arranged in the mounting groove, each movable connecting rod is movably connected to a fixed connecting rod at the bottom, and the ends of every two fixed connecting rods on the same side are rotatably connected to a second connecting column, a connecting plate is fixedly connected between the two fixed connecting rods above the second connecting column, a third mounting frame is fixedly connected to the back faces of the two connecting plates, and an adjusting self-locking mechanism is installed below the third mounting frame;

[0007] The positioning mechanism includes a first electric cylinder and a steel ball. Two first electric cylinders are fixedly installed at both ends of one side of the electric slide. The telescopic ends of the first electric cylinders are inserted into the electric slide. The bottom end of the electric slide below the first electric cylinder is fixedly connected with a hollow clamping nozzle, and the bottom of the clamping nozzle is movably connected with a steel ball.

[0008] The control mechanism comprises a load-bearing rod and a cylindrical slider, wherein the inner wall of the mounting groove is fixedly connected to a load-bearing rod, and a cylindrical slider is sleeved on the load-bearing rod;

[0009] The adjustment self-locking mechanism includes an adjustment motor and a first rotating rod. The adjustment motor is fixedly installed on the side wall of the third mounting frame. The end of the output shaft of the adjustment motor is fixedly connected to the first rotating rod. A locking block is fixedly installed on the top of the output shaft. A wedge-shaped groove is provided on the top of the locking block. A locking mechanism is provided on the third mounting frame above the locking block.

[0010] Preferably, a first mounting frame is fixedly mounted on one side of the detection platform, and a hydraulic detection component that can be laterally moved and adjusted in angle is mounted on the top of the first mounting frame.

[0011] Preferably, a plurality of evenly arranged positioning bolts are fixedly mounted on both sides of the top of the first base, and a positioning hole is formed on the top of each positioning bolt, the size of the positioning hole being adapted to the steel ball.

[0012] Preferably, the top of the steel ball is fixedly connected to the bottom of the tension spring, and the top of the tension spring is fixedly connected to the end of the telescopic end of the first electric cylinder.

[0013] Preferably, a plurality of sliding grooves are evenly arranged on the outer ring of the load-bearing rod, a circular limit block is fixedly connected to the end of the load-bearing rod, a plurality of plug-in blocks matching the sliding grooves are evenly arranged on the side wall of the cylindrical slider close to the limit block, the height of each plug-in block is higher than the depth of the sliding groove, and a plurality of sliding strips matching the sliding grooves are evenly arranged on the inner wall of the cylindrical slider.

[0014] Preferably, the side wall of one side of the cylindrical slider is fixedly connected to the telescopic ends of two second electric cylinders, and the fixed ends of the two second electric cylinders are fixedly connected to the inner wall of the mounting groove. Through holes are provided at the ends close to the movable connecting rod and the fixed connecting rod, and the through holes are adapted to the load-bearing rod. Several matching grooves adapted to the plug-in blocks are evenly provided on the outer circle of the through holes.

[0015] Preferably, a bidirectional electric telescopic rod is fixedly connected between the side walls of the first connecting column, symmetrical L-shaped plates are fixedly connected to the opposite surfaces of the two connecting plates, two sliding rails are fixedly connected to the bottom end of the L-shaped plate, a fixed plate is slidably connected to the two sliding rails, and a group of spiral lifting components installed on the L-shaped plate are fixedly connected to the top end of the fixed plate.

[0016] Preferably, a movable plate is fixedly connected to one side of the second connecting column, two slots are provided on the top of the movable plate, the two slots are opposite to the two slide rails, the slot width is greater than the slide rail width, and a clamping component is fixedly installed on the bottom of the movable plate.

[0017] Preferably, the end of the first rotating rod is rotatably connected to the second rotating rod, and the end of the second rotating rod is rotatably connected to a locking plate, and one side of the locking plate is fixedly connected to the bottom side wall of the movable plate.

[0018] Preferably, the locking mechanism includes a micromotor and a locking slider, a micromotor is fixedly mounted on the top of the third mounting frame, the output end of the micromotor is connected to the third mounting frame, the third mounting frame below the micromotor is fixedly connected to a hollow fixed mounting plate, the end of the micromotor output end is fixedly connected to a screw threadedly connected to the top of the fixed mounting plate, two locking grooves are symmetrically opened on the inner wall of the bottom of the fixed mounting plate, a locking slider is slidably connected in the locking groove, the bottom of the locking slider is a wedge-shaped structure, and the bottom of the screw is threadedly connected to the top of the locking slider.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention sets a positioning mechanism, which limits the electric slide, thereby improving the stability of the electric slide, preventing the electric slide from sliding accidentally when performing unstable load and load direction adjustment detection items, and improving the reliability of the electric slide function, wherein the positioning bolt can not only divide the moving interval of the electric slide, but also tightly connect the first base with the detection platform, and at the same time, the positioning hole at the top of the positioning bolt can assist the positioning mechanism to realize the positioning function of the electric slide, and the presence of the tension spring forms a soft connection between the steel ball and the positioning hole, which can effectively reduce the wear between the steel ball and the positioning hole, and the setting of the clamping nozzle can also prevent the problem of inaccurate docking between the steel ball and the positioning hole when the positioning mechanism is working.

[0021] The present invention sets a control mechanism. When adjusting the angle of the movable link and thus adjusting the distance between the two groups of clamping parts and the two groups of spiral lifting assemblies, the control mechanism can adjust the relative positions of the movable link and the fixed link. The control mechanism connects the load-bearing rod, the movable link and the fixed link through a cylindrical slider. The external controller controls the second electric cylinder to extend and pull the cylindrical slider to slide along the slide groove to lock or unlock the movable link and the fixed link, which is convenient for switching the clamping posture, so that the intelligent detection device can adapt to the detection of expansion joints of different sizes. After the adjustment is completed, the control mechanism can effectively lock the movable link and the fixed link, so that the overall structure of the second mounting frame is stable and the strength is guaranteed.

[0022] The present invention provides an adjustable self-locking mechanism and a locking mechanism. Since the position of the slide rail is relatively fixed to the second connecting column, when the movable plate rotates, the top and side walls of the two slide rails can serve as limit stops for the movable plate, so that the movable plate can only rotate within a specific range, thereby ensuring that the various components do not interfere with each other, and preventing excessive activity from affecting the normal operation of the adjustable self-locking mechanism. At the same time, since the slide rail limits the movable plate and the total length of the first rotating rod and the second rotating rod is greater than the spacing between the output shaft and the locking plate, a triangle is formed between the first rotating rod, the second rotating rod and the movable plate, and a self-locking effect can be formed between the three, so that the clamping component can operate stably. The wedge-shaped structure at the bottom of the locking slider of the locking mechanism is connected to the wedge-shaped groove at the top of the locking block. The self-locking effect of the screw can also ensure the stability of the locking slider, and then ensure that the position of the fixed adjustable self-locking mechanism does not shift. The adjustable self-locking mechanism cooperates with the self-locking mechanism to ensure that the expansion joint can still maintain its position unchanged when subjected to an unbalanced directional force, which not only improves the detection effect, but also ensures the safe and stable operation of various components of the intelligent monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0024] Figure 2 A top view of a first base of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0025] Figure 3 A schematic diagram of the positioning bolt structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of an electric slide table of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0027] Figure 5 This is a cross-sectional view of the positioning mechanism structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the coordination state of the positioning mechanism and the positioning bolts of the intelligent monitoring device for expansion joints of road bridges proposed by the present invention;

[0029] Figure 7 A side view of the second mounting frame structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0030] Figure 8 A three-dimensional diagram of the components in the second mounting frame of the intelligent monitoring device for expansion joints of road bridges proposed by the present invention;

[0031] Fig. 9 A schematic diagram of the matching groove structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0032] Fig.10 A schematic diagram of the control mechanism structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the cylindrical slider structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0034] Fig.12 A schematic diagram of the load-bearing rod structure of an intelligent monitoring device for expansion joints of road bridges proposed by the present invention;

[0035] Fig.13 This is a schematic diagram of the structure of a spiral lifting component of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0036] Fig.14 A schematic diagram of the movable plate structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0037] Fig.15 A schematic diagram of the structure of a self-locking mechanism of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0038] Fig.16 A schematic diagram of the locking mechanism structure of an intelligent monitoring device for expansion joints of roads and bridges proposed by the present invention;

[0039] Fig.17 This is a half-section schematic diagram of a locking mechanism of an intelligent monitoring device for expansion joints of a road bridge proposed by the present invention.

[0040] In the figure: 1, test bench; 2, first mounting frame; 3, hydraulic test assembly; 4, first base; 5, positioning bolt; 6, positioning hole; 7, electric slide; 8, positioning mechanism; 81, first electric cylinder; 9, clamping nozzle; 10, tension spring; 11, steel ball; 12, second mounting frame; 13, movable connecting rod; 14, fixed connecting rod; 141, matching groove; 15, first connecting column; 16, electric telescopic rod; 17, control mechanism; 18, load-bearing rod; 19, slide groove; 20, limit block; 21, cylindrical slider; 22, plug-in block; 23. Second electric cylinder; 24. L-shaped plate; 25. Slide rail; 26. Screw lifting assembly; 27. Fixed plate; 28. Second connecting column; 29. ​​Movable plate; 291. Clamping component; 30. Slot; 31. Third mounting bracket; 32. Adjusting motor; 33. Output shaft; 331. Locking block; 34. Adjusting self-locking mechanism; 35. First rotating rod; 36. Second rotating rod; 37. Locking plate; 38. Locking mechanism; 39. Micro motor; 40. Screw; 41. Locking slider; 42. Fixed mounting plate; 43. Locking groove. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Reference Figure 1-17 , an intelligent monitoring device for expansion joints of road bridges, comprising a detection platform 1 and a second mounting frame 12, a rectangular first base 4 is fixedly arranged on the top of the detection platform 1, two mutually symmetrical electric slides 7 are slidably connected to the top of the first base 4 through two tracks, two sets of positioning mechanisms 8 are symmetrically installed on the opposite sides of the two electric slides 7, a second mounting frame 12 is slidably connected to the top of the detection platform 1, two reinforcements are symmetrically arranged on the top of the second mounting frame 12, four movable connecting rods 13 symmetrical in pairs are rotatably connected at both ends of the two reinforcements, a first connecting column 15 is installed between the bottoms of the two movable connecting rods 13 on the same reinforcement, mounting grooves are provided at both ends of the first connecting column 15, a control mechanism 17 is arranged in the mounting groove, a fixed connecting rod 14 is movably connected to the bottom of each movable connecting rod 13, a second connecting column 28 is rotatably connected to the ends of every two fixed connecting rods 14 on the same side, a connecting plate is fixedly connected between the two fixed connecting rods 14 above the second connecting column 28, a third mounting frame 31 is fixedly connected to the back faces of the two connecting plates, and an adjustment self-locking mechanism 34 is installed below the third mounting frame 31;

[0043] The positioning mechanism 8 includes a first electric cylinder 81 and a steel ball 11. Two first electric cylinders 81 are fixedly installed at both ends of one side of the electric slide 7. The telescopic ends of the first electric cylinders 81 are inserted into the electric slide 7. The bottom end of the electric slide 7 below the first electric cylinders 81 is fixedly connected with a hollow clamping nozzle 9, and the bottom of the clamping nozzle 9 is movably connected with a steel ball 11.

[0044] The control mechanism 17 includes a load-bearing rod 18 and a cylindrical slider 21. The inner wall of the mounting groove is fixedly connected with a load-bearing rod 18, and a cylindrical slider 21 is sleeved on the load-bearing rod 18.

[0045] The adjusting self-locking mechanism 34 includes an adjusting motor 32 and a first rotating rod 35. The adjusting motor 32 is fixedly installed on the side wall of the third mounting frame 31. The end of the output shaft 33 of the adjusting motor 32 is fixedly connected to the first rotating rod 35. A locking block 331 is fixedly installed on the top of the output shaft 33. A wedge-shaped groove is provided on the top of the locking block 331. A locking mechanism 38 is provided on the third mounting frame 31 above the locking block 331. The actual length of the first base 4 is customized according to the needs of the detection site. The figure is only for illustration. The expansion joint to be detected is generally long in length. It is transported by the electric slide 7 and a segmented detection method is adopted. The electric slide 7 can facilitate the transportation of the expansion joint. However, when performing unstable load and load direction adjustment detection projects, the electric slide 7 may slide due to uneven force. At this time, the electric slide 7 can be limited by the positioning mechanism 8, thereby improving the stability of the electric slide 7 and preventing accidental sliding. Due to the segmented detection adopted, the electric slide 7 can move a fixed length at one end each time so that the expansion joint can be moved in segments to the hydraulic detection area. The load detection is performed below the measuring component 3. Every time the external controller controls the electric slide 7 to move once, the external controller simultaneously controls the first electric cylinder 81 to contract, thereby pulling the steel ball 11 out of the positioning hole 6 through the tension spring 10. After the electric slide 7 moves into place, the first electric cylinder 81 extends, pushing the tension spring 10 and the steel ball 11 to slide down along the clamping nozzle 9 and connect to another positioning hole 6. At this time, the steel ball 11 can limit the erroneous sliding of the electric slide 7 and improve the reliability of the function of the electric slide 7. The position of the second mounting frame 12 can be moved to meet the detection needs of other workpieces, but the expansion joint is generally clamped in a fixed position. The two reinforcements can be fixed with the external The equipment is connected to enhance the overall strength and stability. The movable connecting rod 13 can be adjusted in angle, and the fixed connecting rod 14 can make the second connecting column 28 and the connecting plate and other components always maintain a vertical state relative to the test platform 1. When the angle of the movable connecting rod 13 is adjusted to adjust the distance between the two groups of clamping parts 291 and the two groups of spiral lifting components 26, the control mechanism 17 can adjust the relative position of the movable connecting rod 13 and the fixed connecting rod 14. The control mechanism 17 connects the load-bearing rod 18, the movable connecting rod 13 and the fixed connecting rod 14 through the cylindrical slider 21, and controls the second electric cylinder 23 to extend and retract and pull the cylindrical slider 21 along the slide groove 19 through the external controller. Slide to lock or unlock the movable link 13 and the fixed link 14, which is convenient for switching the clamping posture, so that the intelligent detection device can adapt to the detection of expansion joints of different sizes. After the adjustment is completed, the control mechanism 17 can effectively lock the movable link 13 and the fixed link 14, so that the overall structure of the second mounting frame 12 is stable and the strength is guaranteed. The self-locking mechanism 34 drives the movable plate 29 to rotate by adjusting the rotation of the motor 32, so that the two clamping parts 291 are convenient to move away from each other and the electric slide 7 is convenient for transporting the expansion joint. After the expansion joint is in place, the motor 32 is adjusted to rotate and push the two movable plates 29 closer together, so that the two clamping parts 291 clamp the expansion joint from the side.The expansion joint is fixed to the top of the electric slide 7 with the spiral lifting component 26, and the adjustment self-locking mechanism 34 has a self-locking effect. However, when the hydraulic detection component 3 applies a directional force to the expansion joint, the expansion joint may be subjected to an unbalanced force and cause unnecessary displacement, and then the overall offset of the adjustment self-locking mechanism 34 is caused by the reverse push of the clamping component 291. At this time, the locking mechanism 38 used for insurance can fix the adjustment self-locking mechanism 34 by locking the output shaft 33, and cooperate with the self-locking effect of the adjustment self-locking mechanism 34 to ensure that the expansion joint can still maintain its position when subjected to an unbalanced directional force, which not only improves the detection effect, but also ensures the safe and stable operation of each component of the intelligent monitoring device.

[0046] As a technical optimization solution of the present invention, a first mounting frame 2 is fixedly mounted on one side of the detection platform 1, and a hydraulic detection component 3 that can be laterally moved and adjusted in angle is mounted on the top of the first mounting frame 2. The hydraulic detection component 3 can apply a load to the expansion joint through a hydraulic cylinder, and the hydraulic detection component 3 has a direction adjustment function, which can simulate various force directions in actual use and effectively improve the detection effect.

[0047] As a technical optimization solution of the present invention, a plurality of evenly arranged positioning bolts 5 are fixedly installed on both sides of the top of the first base 4, and a positioning hole 6 is opened at the top of each positioning bolt 5, and the size of the positioning hole 6 is adapted to the steel ball 11. The positioning bolts 5 can divide the moving interval of the electric slide 7, and can also closely connect the first base 4 with the detection platform 1. At the same time, the positioning holes 6 at the top of the positioning bolts 5 can assist the positioning mechanism 8 to realize the positioning function of the electric slide 7.

[0048] As a technical optimization solution of the present invention, the top of the steel ball 11 is fixedly connected to the bottom of the tension spring 10, and the top of the tension spring 10 is fixedly connected to the end of the telescopic end of the first electric cylinder 81. The existence of the tension spring 10 forms a soft connection between the steel ball 11 and the positioning hole 6, which can effectively reduce the wear between the steel ball 11 and the positioning hole 6. The setting of the clamping mouth 9 can also prevent the problem of inaccurate docking between the steel ball 11 and the positioning hole 6 when the positioning mechanism 8 is working.

[0049] As a technical optimization solution of the present invention, a plurality of slide grooves 19 are evenly opened on the outer circle of the load-bearing rod 18, a circular limit block 20 is fixedly connected to the end of the load-bearing rod 18, and a plurality of plug-in blocks 22 matching the slide grooves 19 are evenly arranged on the side wall of the cylindrical slider 21 close to the limit block 20, and the height of each plug-in block 22 is higher than the depth of the slide groove 19, and a plurality of slide strips matching the slide grooves 19 are evenly arranged on the inner wall of the cylindrical slider 21. Under normal conditions, the second electric cylinder 23 pushes the cylindrical slider 21 to move along the slide groove 19 toward the limit block 20. At this time, the bottom of the plug-in block 22 is connected to the slide groove 19 and the top of the plug-in block 22 is connected to the matching groove 141 until the end of the plug-in block 22 abuts against the side wall of the limit block 20. At this time, the movable connecting rod 13, the fixed connecting rod 14 and the first connecting column 15 are locked. When the external controller controls the electric telescopic rod 16 to adjust the distance between the two first connecting columns 15, the external controller first controls the second electric cylinder 23 to contract, pulls the cylindrical slider 21 and the plug-in block 22 out of the movable connecting rod 13 and the fixed connecting rod 14, thereby unlocking the movable connecting rod 13, the fixed connecting rod 14 and the first connecting column 15 for adjustment.

[0050] As a technical optimization solution of the present invention, the side wall of one side of the cylindrical slider 21 is fixedly connected to the telescopic ends of two second electric cylinders 23, and the fixed ends of the two second electric cylinders 23 are fixedly connected to the inner wall of the installation groove. The movable connecting rod 13 and the fixed connecting rod 14 are provided with through holes at the ends close to each other, and the through holes are adapted to the load-bearing rod 18. The outer circle of the through holes is evenly provided with a plurality of matching grooves 141 adapted to the plug-in block 22. The matching grooves 141 are used in conjunction with the plug-in block 22 to perform locking and unlocking operations.

[0051] As a technical optimization scheme of the present invention, a bidirectional electric telescopic rod 16 is fixedly connected between the side walls of the first connecting column 15, and a symmetrical L-shaped plate 24 is fixedly connected to the opposite surfaces of the two connecting plates. Two slide rails 25 are fixedly connected to the bottom end of the L-shaped plate 24, and a fixed plate 27 is slidably connected to the two slide rails 25. A group of spiral lifting components 26 installed on the L-shaped plate 24 is fixedly connected to the top of the fixed plate 27. The two first connecting columns 15 can adjust the spacing under the push of the electric telescopic rod 16, thereby changing the spacing between the two groups of spiral lifting components 26, so as to adapt to expansion joints of different sizes. After adjusting the spacing position, the electric slide 7 transports the expansion joint to be tested to the appropriate position, and the spiral lifting component 26 can push the fixed plate 27 down along the slide rail 25 to the top of the expansion joint, thereby fixing the expansion joint on the top of the electric slide 7. The threaded connection method itself has a self-locking effect. After the expansion joint is fixed, external force cannot affect the pressing effect of the fixed plate 27.

[0052] As a technical optimization solution of the present invention, a movable plate 29 is fixedly connected to one side of the second connecting column 28, and two slots 30 are provided at the top of the movable plate 29. The two slots 30 are located opposite to the two slide rails 25, and the width of the slots 30 is greater than the width of the slide rails 25. A clamping component 291 is fixedly installed at the bottom of the movable plate 29. Since the position of the slide rails 25 is relatively fixed to the second connecting column 28, when the movable plate 29 rotates, the tops and side walls of the two slide rails 25 can serve as limiters of the movable plate 29, so that the movable plate 29 can only rotate within a specific range, thereby ensuring that the various components do not interfere with each other, and preventing excessive activity from affecting the normal operation of the adjustment self-locking mechanism 34.

[0053] As a technical optimization solution of the present invention, the end of the first rotating rod 35 is rotatably connected to the second rotating rod 36, and the end of the second rotating rod 36 is rotatably connected to a locking plate 37, and one side of the locking plate 37 is fixedly connected to the bottom side wall of the movable plate 29. Since the slide rail 25 limits the movable plate 29 and the total length of the first rotating rod 35 and the second rotating rod 36 is greater than the distance between the output shaft 33 and the locking plate 37, when the adjustment motor 32 pushes the first rotating rod 35 and the second rotating rod 36 so that the movable plate 29 finally abuts against the slide rail 25, a triangle is formed between the first rotating rod 35, the second rotating rod 36 and the movable plate 29, and a self-locking effect can be formed between the three, so that the clamping component 291 can operate stably.

[0054] As a technical optimization scheme of the present invention, the locking mechanism 38 includes a micro motor 39 and a locking slider 41. The micro motor 39 is fixedly installed on the top of the third mounting frame 31, and the output end of the micro motor 39 is connected to the third mounting frame 31. The third mounting frame 31 below the micro motor 39 is fixedly connected with a hollow fixed mounting plate 42. The end of the output end of the micro motor 39 is fixedly connected with a screw 40 threadedly connected to the top of the fixed mounting plate 42. The inner wall at the bottom of the fixed mounting plate 42 is symmetrically provided with two locking grooves 43. A locking slider 41 is slidably connected in the locking groove 43. The bottom of the locking slider 41 is a wedge-shaped structure, and the bottom of the screw 40 is threadedly connected to the top of the locking slider 41. After adjusting the self-locking mechanism 34 to push the movable plate 29 to the working position, the external controller controls the locking mechanism 38 to work. First, the micro motor 39 is controlled to rotate, driving the screw 40 to rotate and causing the locking slider 41 to descend along the locking groove 43. Finally, the wedge-shaped structure at the bottom of the locking slider 41 is connected to the wedge-shaped groove at the top of the locking block 331. The self-locking effect of the screw 40 can also ensure the stability of the locking slider 41, thereby ensuring that the position of the fixed adjustment self-locking mechanism 34 is not offset. When unlocking, only the micro motor 39 needs to be reversed.

[0055] When the present invention is in use, the external controller first controls the spiral lifting assembly 26 to lift the fixed plate 27, and then controls the adjusting motor 32 to reverse, driving the first rotating rod 35 and the second rotating rod 36 to pull the movable plate 29 away from the slide rail 25. At this time, the expansion joint to be detected is stably placed on the top of the electric slide 7, and the external controller controls the first electric cylinder 81 to contract, thereby pulling the steel ball 11 out of the positioning hole 6 through the tension spring 10. Then the external controller controls the electric slide 7 to slide and transport the expansion joint. After the electric slide 7 moves into place, the first electric cylinder 81 extends, pushing the tension spring 10 and the steel ball 11 to slide down along the clamping nozzle 9 and enter the positioning hole 6. At this time, the expansion joint is clamped and fixed, and the external controller controls the adjusting motor 32 to push The first rotating rod 35 and the second rotating rod 36 are moved so that the movable plate 29 finally abuts against the slide rail 25, and the external controller continues to control the locking mechanism 38 to work. First, the micro motor 39 is controlled to rotate, which drives the screw 40 to rotate and makes the locking slider 41 descend along the locking groove 43. Finally, the wedge-shaped structure at the bottom of the locking slider 41 is connected to the wedge-shaped groove at the top of the locking block 331, and then the two clamping parts 291 can be controlled to clamp the expansion joint from the side. At the same time, the spiral lifting assembly 26 is controlled to push the fixed plate 27 to descend along the slide rail 25 to the top of the expansion joint, so as to fix the expansion joint on the top of the electric slide 7. At this time, the expansion joint is fixed, and the hydraulic detection assembly 3 is started to apply load to the expansion joint through the hydraulic cylinder for detection.

[0056] When performing segmented testing, after each segment is tested, the above process is reversed to unlock the expansion joint, and the expansion joint is transported segmentally by the electric slide 7 and then clamped, fixed and tested.

[0057] When it is necessary to change the clamping posture and size, the external controller first controls the second electric cylinder 23 to contract, pulling the cylindrical slider 21 and the plug-in block 22 out of the matching groove 141 of the movable link 13 and the fixed link 14, thereby unlocking the movable link 13, the fixed link 14 and the first connecting column 15, and then the electric telescopic rod 16 extends or shortens the preset distance to drive the two first connecting columns 15 to adjust the spacing. At this time, the second connecting column 28 and the connecting plate and other components always remain in a vertical state relative to the detection platform 1 under the action of gravity. After the adjustment is completed, the second electric cylinder 23 pushes the cylindrical slider 21 to move along the slide groove 19 toward the limit block 20. At this time, the bottom of the plug-in block 22 is connected to the slide groove 19 and the top of the plug-in block 22 is connected to the matching groove 141 until the end of the plug-in block 22 abuts against the side wall of the limit block 20. At this time, the movable link 13, the fixed link 14 and the first connecting column 15 are locked, and the detection work can continue.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0059] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent monitoring device for expansion joints of roads and bridges, comprising a detection platform (1) and a second mounting frame (12), characterized in that: The top of the detection platform (1) is fixedly provided with a rectangular first base (4), the top of the first base (4) is slidably connected to two mutually symmetrical electric slides (7) through two tracks, and two sets of positioning mechanisms (8) are symmetrically installed on opposite sides of the two electric slides (7), the top of the detection platform (1) is slidably connected to a second mounting frame (12), the top of the second mounting frame (12) is symmetrically provided with two reinforcements, and the two reinforcements are rotatably connected at both ends with four two-by-two symmetrical movable connecting rods (13), a first connecting column (15) is installed between the bottoms of the two movable connecting rods (13) on the same reinforcement, and a bidirectional electric telescopic rod (16) is fixedly connected between the side walls of the first connecting column (15), the first connecting column (15) is provided with mounting grooves at both ends, and a control mechanism (17) is arranged in the mounting groove, and the bottom of each movable connecting rod (13) is movably connected A fixed connecting rod (14) is provided, and the ends of each of the two fixed connecting rods (14) on the same side are rotatably connected to a second connecting column (28). A connecting plate is fixedly connected between the two fixed connecting rods (14) above the second connecting column (28), and the opposite surfaces of the two connecting plates are fixedly connected to symmetrical L-shaped plates (24), and the bottom end of the L-shaped plate (24) is fixedly connected to two slide rails (25). A movable plate (29) is fixedly connected to one side of the second connecting column (28), and the top of the movable plate (29) is provided with two slots (30), and the two slots (30) are located opposite to the two slide rails (25), and the width of the slots (30) is greater than the width of the slide rails (25). A clamping component (291) is fixedly installed at the bottom of the movable plate (29), and the back surfaces of the two connecting plates are fixedly connected to a third mounting frame (31), and an adjustable self-locking mechanism (34) is installed below the third mounting frame (31); The positioning mechanism (8) comprises a first electric cylinder (81) and a steel ball (11), two first electric cylinders (81) are fixedly installed at both ends of one side of the electric slide (7), the telescopic ends of the first electric cylinders (81) are inserted into the electric slide (7), the bottom end of the electric slide (7) below the first electric cylinder (81) is fixedly connected with a hollow clamping nozzle (9), the bottom of the clamping nozzle (9) is movably connected with a steel ball (11), and a plurality of evenly arranged positioning bolts (5) are fixedly installed on both sides of the top of the first base (4), and a positioning hole (6) is opened at the top of each positioning bolt (5), and the size of the positioning hole (6) is adapted to the steel ball (11); The control mechanism (17) comprises a load-bearing rod (18) and a cylindrical slider (21), wherein a load-bearing rod (18) is fixedly connected to the inner wall of the mounting groove, a cylindrical slider (21) is sleeved on the load-bearing rod (18), a plurality of slide grooves (19) are evenly arranged on the outer ring of the load-bearing rod (18), a circular limit block (20) is fixedly connected to the end of the load-bearing rod (18), and a plurality of plug-in blocks (22) matching the slide grooves (19) are evenly arranged on the side wall of the cylindrical slider (21) close to the limit block (20), and each plug-in block (22) has a The height is higher than the depth of the slide groove (19), the inner wall of the cylindrical slider (21) is evenly provided with a plurality of slide bars that match the slide groove (19), one side wall of the cylindrical slider (21) is fixedly connected to the telescopic ends of two second electric cylinders (23), the fixed ends of the two second electric cylinders (23) are fixedly connected to the inner wall of the installation groove, the movable connecting rod (13) and the fixed connecting rod (14) are provided with through holes at the proximal ends thereof, the through holes are matched with the load-bearing rod (18), and the outer ring of the through holes is evenly provided with a plurality of matching grooves (141) that match the plug-in block (22); The adjusting self-locking mechanism (34) comprises an adjusting motor (32) and a first rotating rod (35); the adjusting motor (32) is fixedly mounted on a side wall of the third mounting frame (31); the end of an output shaft (33) of the adjusting motor (32) is fixedly connected to the first rotating rod (35); a locking block (331) is fixedly mounted on the top end of the output shaft (33); a wedge-shaped groove is formed at the top end of the locking block (331); and a locking mechanism (38) is arranged on the third mounting frame (31) above the locking block (331).

2. The intelligent monitoring device for expansion joints of roads and bridges according to claim 1 is characterized in that: A first mounting frame (2) is fixedly mounted on one side of the detection platform (1), and a hydraulic detection component (3) capable of transverse movement and adjustable angle is mounted on the top of the first mounting frame (2).

3. The intelligent monitoring device for road and bridge expansion joints according to claim 1 is characterized in that: The top of the steel ball (11) is fixedly connected to the bottom of the tension spring (10), and the top of the tension spring (10) is fixedly connected to the end of the telescopic end of the first electric cylinder (81).

4. The intelligent monitoring device for expansion joints of roads and bridges according to claim 1 is characterized by: A fixed plate (27) is slidably connected to the two slide rails (25), and a group of spiral lifting components (26) mounted on the L-shaped plate (24) is fixedly connected to the top of the fixed plate (27).

5. The intelligent monitoring device for road and bridge expansion joints according to claim 1 is characterized in that: The end of the first rotating rod (35) is rotatably connected to the second rotating rod (36), and the end of the second rotating rod (36) is rotatably connected to a locking plate (37), and one side of the locking plate (37) is fixedly connected to the bottom side wall of the movable plate (29).

6. The intelligent monitoring device for expansion joints of roads and bridges according to claim 1 is characterized by: The locking mechanism (38) comprises a micro motor (39) and a locking slider (41); the micro motor (39) is fixedly mounted on the top of the third mounting frame (31); the output end of the micro motor (39) passes through the third mounting frame (31); the third mounting frame (31) below the micro motor (39) is fixedly connected to a hollow fixed mounting plate (42); the output end of the micro motor (39) is fixedly connected to a screw rod (40) threadedly connected to the top of the fixed mounting plate (42); two locking grooves (43) are symmetrically formed on the inner wall of the bottom of the fixed mounting plate (42); a locking slider (41) is slidably connected in the locking groove (43); the bottom of the locking slider (41) is a wedge-shaped structure; the bottom of the screw rod (40) is threadedly connected to the top of the locking slider (41).

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