Hydro-junction embedded steel bar corrosion detection device

Abstract

The invention discloses a hydro-junction embedded steel bar corrosion detection device, and relates to the technical field of steel bar detection devices, the hydro-junction embedded steel bar corrosion detection device comprises a detection machine main body, and the detection machine main body is connected with two contact electrodes through two signal lines. When the device is used, the contact electrodes are fixed to the fixing rings through fixing bolts, the positions of the sliding rings and the fixing rings on the same side are fixed through a pushing mechanism, the distance between the two connecting blocks and the two contact electrodes can be adjusted through a distance adjusting mechanism, and the angle of the two sliding rings can be adjusted through an angle adjusting assembly; according to the detection device, the sliding rings and the fixed rings on the same side are arranged to meet detection use of steel bars with different intervals and cylindrical steel bars, then position fixation of the sliding rings and the fixed rings on the same side is relieved through the pushing mechanisms, the two fixed rings can move through the pushing mechanisms, the two fixed rings move to drive the two contact electrodes to move, and the two contact electrodes move downwards to make contact with a component; and then the detector main body is operated to measure the corrosion degree of the reinforcing steel bar.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar detection devices, in particular to a corrosion detection device for pre-buried steel bars in a water conservancy hub. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete. Its cross-section is circular, and sometimes square with rounded corners. It is widely used in the detection of embedded steel corrosion in water conservancy project construction. Rebar corrosion detectors are used in daily inspections of rebars. When testing existing rebars, it generally includes a host, two signal lines and two electrodes. During the test, a rebar scanner is used to scan the position of the rebar, and the test grid lines are drawn according to the position of the rebar. Finally, the two electrodes are used to test the rebars in turn, and the display panel of the host will show the degree of corrosion of the rebar.

[0003] The existing steel bar corrosion detection device can adjust the positions of two electrodes according to the spacing between the measuring points. The two electrodes are arranged in parallel. When the measured concrete component is cylindrical, the two parallel electrodes are measured. Since the measuring surface is arc-shaped, when squeezing the concrete surface, the sides of the two electrodes close to each other are subjected to a greater squeezing force than the sides of the two electrodes far away from each other, thereby affecting the detection. At the same time, it is easy for the sides of the two electrodes close to each other to be worn more than the sides of the two electrodes far away from each other. For this reason, we disclose a pre-buried steel bar corrosion detection device for a water conservancy hub. Summary of the invention

[0004] The invention provides a device for detecting corrosion of embedded steel bars in a water conservancy hub to solve the problems raised by the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a detection device for embedded steel bar corrosion in a water conservancy hub, comprising a detection machine body, the detection machine body is connected to two contact electrodes through two signal lines, a U-shaped column is arranged between the two contact electrodes, two connection blocks are installed on the inner walls of both sides of the U-shaped column through a distance adjustment mechanism, two sliding rings are installed on the two connection blocks through an angle adjustment mechanism, the tops of the two sliding rings are both installed with fixed rings through a reset mechanism, the two contact electrodes are respectively fixedly installed in the two fixed rings through fixing bolts, a pushing mechanism is installed on the top of the U-shaped column, and the pushing mechanism is installed in cooperation with the two reset mechanisms; The angle adjustment mechanism includes a synchronization component and two angle adjustment components; The angle adjustment assembly includes a movable hole opened at the top of the connecting block, a movable rod is slidably installed in the movable hole, both ends of the movable rod extend out of the movable hole, an upper push rod is rotatably installed on the top end of the movable rod, and the top end of the upper push rod is rotatably installed on the side of the sliding ring, a connecting rod is fixedly installed on the side of the connecting block, one end of the connecting rod away from the connecting block is rotatably installed on the side of the sliding ring, a rectangular rod is fixedly installed on the side of the movable rod, and the rectangular rod is connected to the synchronization assembly.

[0006] As a preferred technical solution of the present invention, the synchronization component includes an adjustment plate fixedly installed on the side of the U-shaped column, a rotating hole is opened on the top of the adjustment plate, a rotating screw is rotatably installed in the rotating hole, an upward column is threadedly sleeved on the rotating screw, a synchronization hole is opened on the inner wall of one side of the U-shaped column, a positioning rod is fixedly installed on the top and bottom inner walls of the synchronization hole, the upward column is slidably sleeved on the positioning rod, a rectangular sleeve is fixedly installed on the top of the upward column, and the ends of the two rectangular rods close to each other are respectively slidably installed in the two rectangular sleeves.

[0007] As a preferred technical solution of the present invention, the synchronization component also includes a limit plate fixedly installed on the side of the U-shaped column, a threaded limit hole is opened on the top of the limit plate, a limit bolt is threadedly installed in the threaded limit hole, a limit knob is fixedly installed on the top of the rotating screw, and the bottom end of the limit bolt abuts against the top of the limit knob.

[0008] As a preferred technical solution of the present invention, the distance adjustment mechanism includes an adjusting column rotatably installed on the inner wall of one side of the U-shaped column, the adjusting column is provided with two sections of external threads arranged in opposite directions, and threaded moving blocks are threadedly sleeved on the two external threads, and two side push rods are rotatably installed on both sides of the two threaded moving blocks, and the ends of the two side push rods on the same side away from the adjusting column are rotatably installed on the side of the adjacent connecting blocks, and the connecting block is at the same distance from the two threaded moving blocks, a through hole is provided on the inner wall of the other side of the U-shaped column, one end of the adjusting column passes through the through hole and is fixedly installed with an adjusting knob, a positioning plate is fixedly installed on the side of the U-shaped column, a threaded positioning hole is provided on the top of the positioning plate, a positioning bolt is threadedly installed in the threaded positioning hole, and the bottom end of the positioning bolt abuts against the side of the adjusting knob.

[0009] As a preferred technical solution of the present invention, the reset mechanism includes two sliding rods fixedly installed on the top of the sliding ring, the fixed ring is slidably sleeved on the two sliding rods, a first spring is sleeved on the sliding rod, and the two ends of the first spring are respectively fixedly installed on the sides of the fixed ring and the sliding ring close to each other, and a slot is opened on the side of the sliding rod, and the slot is installed in cooperation with the pushing mechanism.

[0010] As a preferred technical solution of the present invention, the pushing mechanism includes a connecting plate, the connecting plate is connected to the U-shaped column through four elastic components, the four elastic components are arranged in a rectangular array, a handle is fixedly installed on the top of the connecting plate, and the sides of the two fixing rings are both installed with length adjustment components, and the two length adjustment components are respectively connected to the two sides of the connecting plate; The elastic component includes a mounting sleeve fixedly mounted on the side of the U-shaped column, a driving rod being slidably mounted in the mounting sleeve, the top end of the driving rod being fixedly connected to the bottom of the connecting plate, two blocks being fixedly sleeved on the driving rod, the block located at the bottom being in contact with the bottom of the mounting sleeve, and a second spring sleeved on the driving rod being fixedly mounted on the bottom end of the block located at the top, and the bottom end of the second spring being fixedly mounted on the top of the mounting sleeve.

[0011] As a preferred technical solution of the present invention, the length adjustment assembly includes two mounting blocks fixedly installed on the sides of the fixing ring, length adjustment units are installed on the two mounting blocks, the two length adjustment units are connected to the sides of the connecting plate, a rotating block is fixedly installed on the side of the fixing ring, a positioning unit is installed on the rotating block, and the positioning unit is installed in cooperation with the two length adjustment units and the card slot.

[0012] As a preferred technical solution of the present invention, the length adjustment unit includes a rotating groove opened on the side of the mounting block, a rotating shaft is rotatably installed on the inner wall of one side of the rotating groove, one end of a pull rope is fixedly installed on the side of the rotating shaft, a mounting plate is fixedly installed on the top and bottom inner walls of the rotating groove, a rope hole is opened on the side of the mounting plate, the other end of the pull rope is wrapped around the rotating shaft for multiple turns and then passes through the rope hole and is fixedly connected to the side of the connecting plate, a circular hole is opened on the inner wall of the other side of the rotating groove, one end of the rotating shaft passes through the circular hole, a limiting ring is fixedly installed on the side of the mounting block, a torsion spring is fixedly installed on the inner wall of the limiting ring and the outer side of the rotating shaft, a plurality of evenly arranged blocking grooves are opened on the annular side of the rotating shaft, and the positioning unit is installed in cooperation with the side of the rotating shaft.

[0013] As a preferred technical solution of the present invention, the positioning unit includes a clamping screw rotatably installed on the side of the rotating block, the clamping screw is threadedly sleeved with an extrusion column, and two extrusion rods are fixedly installed on the side of the extrusion column, and the two extrusion rods are provided with arc grooves at one end close to the rotating shaft, and the inner walls of the two arc grooves respectively abut against the sides of the two rotating shafts, and the sides of the two mounting blocks are fixedly installed with guide rods, and the extrusion column is slidably sleeved on the two guide rods, and two clamping rods are fixedly installed on the top of the extrusion column, and clamping blocks are installed on the sides of the two clamping rods, and the two clamping blocks respectively correspond to the positions of the two clamping grooves, and a clamping knob is fixedly installed on the side of the clamping screw away from the mounting block.

[0014] As a preferred technical solution of the present invention, the positioning unit also includes a groove opened on the inner wall of the arc-shaped groove, and a blocking column slidably installed in the groove is fixedly installed on the inner wall of the groove through a third spring, and the blocking column extends from one end of the third spring to one of the blocking grooves.

[0015] Compared with the prior art, the present invention provides a device for detecting corrosion of embedded steel bars in a water conservancy hub, which has the following beneficial effects: In the present invention, when in use, the contact electrode is fixed to the fixing ring by a fixing bolt, the position of the sliding ring and the fixing ring on the same side is fixed by a pushing mechanism, the distance between the two connecting blocks and the two contact electrodes can be adjusted by a distance adjusting mechanism, and the angle of the two sliding rings can be adjusted by an angle adjusting assembly to meet the needs of steel bars and cylindrical steel bars with different spacings for detection and use, and then the position fixation of the sliding ring and the fixing ring on the same side is released by a pushing mechanism, and the two fixing rings can be moved by the pushing mechanism, and the movement of the two fixing rings drives the two contact electrodes to move, and the two contact electrodes move downward to contact the component, and then the detection machine body is operated to measure the degree of corrosion of the steel bars.

[0016] In the present invention, the clamping screw is rotated by rotating the clamping knob, thereby causing the extrusion column to move, and the movement of the extrusion column drives the two extrusion rods to move, so that the two arc grooves can clamp or loosen the side of the rotating shaft, and at the same time, the movement of the extrusion column drives the two clamping rods to move, and the movement of the two clamping rods drives the two clamping blocks to move. When it is necessary to adjust the spacing and angle, the clamping block enters the clamping groove, thereby fixing the position of the fixing ring, and at the same time, the arc groove is separated from the side of the rotating shaft to facilitate the extension of the pull rope. After the adjustment is completed, the rotating shaft is fixed, the length of the pull rope is fixed, and at the same time, the clamping block is moved out of the clamping groove, and the fixing ring can slide, so that the pull rope will drive the fixing ring to move when it is pulled, thereby driving the contact electrode to move and contact the building component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first-view stereoscopic schematic diagram of a device for detecting corrosion of embedded steel bars in a water conservancy hub according to the present invention; Figure 2 A first-view stereoscopic schematic diagram of the connection between the contact electrode, the fixing ring and a part of the pushing mechanism of the present invention; Figure 3 It is a three-dimensional diagram of the clamping rod, the clamping block and the sliding rod of the present invention; Figure 4 A second perspective stereoscopic schematic diagram of the connection between the contact electrode, the fixing ring and a part of the pushing mechanism of the present invention; Figure 5 It is a second perspective stereoscopic schematic diagram of a device for detecting corrosion of embedded steel bars in a water conservancy hub according to the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 for Figure 5 Enlarged view of point B in the middle; Figure 8 It is a third-view stereoscopic schematic diagram of a device for detecting corrosion of embedded steel bars in a water conservancy hub according to the present invention; Fig. 9 It is a cross-sectional view of the connection between the extrusion rod, the third spring, the blocking column and the rotating shaft of the present invention.

[0018] In the figure: 1. Detector body; 2. Fixing ring; 3. Contact electrode; 4. Sliding ring; 5. U-shaped column; 6. Connecting plate; 7. Grip; 8. Signal line; 9. Clamping rod; 10. Sliding rod; 11. Fixing bolt; 12. Extrusion column; 13. Mounting block; 14. Extrusion rod; 15. Rotating shaft; 16. Pull rope; 17. Mounting plate; 18. First spring; 19. Clamping groove; 20. Rotating block; 21. Pressing screw; 22. Guide rod; 23. Limiting ring; 24. Torsion spring; 25. Adjusting knob; 2 6. Side push rod; 27. Upper push rod; 28. Connecting rod; 29. ​​Connecting block; 30. Movable rod; 31. Rectangular rod; 32. Rectangular sleeve; 33. Upward column; 34. Adjusting column; 35. Driving rod; 36. Second spring; 37. Mounting sleeve; 38. Block; 39. Positioning rod; 40. Rotating screw; 41. Adjusting plate; 42. Limiting plate; 43. Limiting bolt; 44. Positioning plate; 45. Positioning bolt; 46. Blocking groove; 47. Blocking column; 48. Third spring; 49. Threaded moving block. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0020] Figures 1 to 9 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1 to 9 The present invention is further described.

[0021] The present invention discloses a detection device for corrosion of embedded steel bars in a water conservancy project, comprising a detection machine body 1, the detection machine body 1 is connected to two contact electrodes 3 through two signal lines 8, a U-shaped column 5 is arranged between the two contact electrodes 3, two connection blocks 29 are installed on the inner walls of both sides of the U-shaped column 5 through a distance adjustment mechanism, two sliding rings 4 are installed on the two connection blocks 29 through an angle adjustment mechanism, the tops of the two sliding rings 4 are both installed with fixed rings 2 through a reset mechanism, the two contact electrodes 3 are respectively fixedly installed in the two fixed rings 2 through fixing bolts 11, a pushing mechanism is installed on the top of the U-shaped column 5, and the pushing mechanism is installed in cooperation with the two reset mechanisms; The angle adjustment mechanism includes a synchronization component and two angle adjustment components; The angle adjustment assembly includes a movable hole opened at the top of the connecting block 29, in which a movable rod 30 is slidably installed. Both ends of the movable rod 30 extend outside the movable hole. An upper push rod 27 is rotatably installed on the top of the movable rod 30, and the top of the upper push rod 27 is rotatably installed on the side of the sliding ring 4. A connecting rod 28 is fixedly installed on the side of the connecting block 29, and one end of the connecting rod 28 away from the connecting block 29 is rotatably installed on the side of the sliding ring 4. A rectangular rod 31 is fixedly installed on the side of the movable rod 30, and the rectangular rod 31 is connected to the synchronization assembly.

[0022] By means of the above structure: when in use, the contact electrode 3 is fixed to the fixing ring 2 by the fixing bolt 11, the position of the sliding ring 4 and the fixing ring 2 on the same side is fixed by the pushing mechanism, the distance between the two connecting blocks 29 and the two contact electrodes 3 can be adjusted by the distance adjustment mechanism, and the angle of the two sliding rings 4 can be adjusted by the angle adjustment component to meet the needs of steel bars and cylindrical steel bars with different spacings for detection and use, and then the position fixation of the sliding ring 4 and the fixing ring 2 on the same side is released by the pushing mechanism, and the two fixing rings 2 can be moved by the pushing mechanism, and the movement of the two fixing rings 2 drives the two contact electrodes 3 to move, and the two contact electrodes 3 move downward Move to contact with the component, and then operate the detection machine body 1 to measure the degree of corrosion of the steel bar. The detection principle is the existing technology. For example, the prior art announcement number CN220508748U discloses a steel bar corrosion detection device in concrete. It mentions that in the steel bar corrosion test using the double electrode method, a concrete steel bar corrosion detector is usually required. The two contact electrodes are respectively placed close to two adjacent detection points on the surface of the reinforced concrete. The potential value of the detection point can be displayed on the detection machine body, and the potential values ​​of all the detection points in the area to be tested are measured in turn to judge the degree of corrosion of the steel bars in the test area through all the potential values ​​in the test area.

[0023] like Figure 5 , Figure 6 and Figure 7 As shown, the synchronization component includes an adjustment plate 41 fixedly installed on the side of the U-shaped column 5, a rotating hole is opened on the top of the adjustment plate 41, a rotating screw 40 is rotatably installed in the rotating hole, an upward column 33 is threadedly sleeved on the rotating screw 40, a synchronization hole is opened on the inner wall of one side of the U-shaped column 5, a positioning rod 39 is fixedly installed on the top and bottom inner walls of the synchronization hole, the upward column 33 is slidably sleeved on the positioning rod 39, a rectangular sleeve 32 is fixedly installed on the top of the upward column 33, the ends of the two rectangular rods 31 close to each other are respectively slidably installed in the two rectangular sleeves 32, and the rectangular sleeves 32 can limit the rectangular rod 31 so that it can only slide but cannot be separated from the rectangular sleeves 32. The rotating screw 40 is used to limit the rotating screw 40 through the setting of the rotating hole, so that it can only rotate but not move up and down. The rotation of the rotating screw 40 makes the upper moving column 33 move upward, and the movement of the upper moving column 33 drives the rectangular sleeve 32 to move, and the movement of the rectangular sleeve 32 drives the two rectangular rods 31 to move, and the movement of the two rectangular rods 31 drives the two movable rods 30 to move upward, thereby making the two upper push rods 27 rotate, and the rotation of the two upper push rods 27 drives the two sliding rings 4 to rotate, and the rotation of the two sliding rings 4 drives the two fixed rings 2 to rotate, thereby making the two contact electrodes 3 rotate, so as to adjust the angle.

[0024] like Figure 8 As shown, the synchronization assembly also includes a limit plate 42 fixedly mounted on the side of the U-shaped column 5, a threaded limit hole is opened on the top of the limit plate 42, a limit bolt 43 is threadedly installed in the threaded limit hole, a limit knob is fixedly installed on the top of the rotating screw 40, and the bottom end of the limit bolt 43 abuts against the top of the limit knob. By setting the limit bolt 43, the limit knob can be limited.

[0025] like Figure 5 and Figure 6As shown, the distance adjustment mechanism includes an adjustment column 34 rotatably mounted on the inner wall of one side of the U-shaped column 5, the adjustment column 34 is provided with two sections of external threads arranged in opposite directions, and threaded moving blocks 49 are threadedly sleeved on the two external threads, and two side push rods 26 are rotatably mounted on both sides of the two threaded moving blocks 49, and the ends of the two side push rods 26 on the same side away from the adjustment column 34 are rotatably mounted on the sides of the adjacent connecting blocks 29, and the connecting blocks 29 are at the same distance from the two threaded moving blocks 49, and a through hole is provided on the inner wall of the other side of the U-shaped column 5, one end of the adjustment column 34 passes through the through hole and is fixedly installed with an adjusting knob 25, and a positioning plate 44 is fixedly installed on the side of the U-shaped column 5, and a threaded positioning hole is provided on the top of the positioning plate 44, and a positioning bolt 45 is threadedly installed in the threaded positioning hole, and the bottom end of the positioning bolt 45 abuts against the side of the adjusting knob 25. The adjusting column 34 can be rotated by loosening the positioning bolt 45 to separate it from the top of the adjusting knob 25, and then rotating the adjusting knob 25. The adjusting column 34 rotates through two oppositely arranged external threads so that the two threaded moving blocks 49 are brought closer to each other, thereby rotating the four side push rods 26, and further moving the two connecting blocks 29 and the two sliding rings 4 away from each other. The two sliding rings 4 move away from each other, driving the two fixing rings 2 away from each other, and further moving the two contact electrodes 3 away from each other, thereby adjusting the spacing between the two contact electrodes 3.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the reset mechanism includes two slide bars 10 fixedly mounted on the top of the sliding ring 4, the fixed ring 2 is slidably sleeved on the two slide bars 10, and the slide bars 10 are sleeved with a first spring 18, and the two ends of the first spring 18 are respectively fixedly mounted on the sides of the fixed ring 2 and the sliding ring 4 close to each other, and the side of the slide bar 10 is provided with a card slot 19, and the card slot 19 is installed in cooperation with the pushing mechanism. Through the setting of the first spring 18, the fixed ring 2 and the sliding ring 4 can keep a distance, and the fixed ring 2 can approach the sliding ring 4. After approaching, the fixed ring 2 and the sliding ring 4 can be restored to their original state through the first spring 18.

[0027] like Figure 1 As shown, the pushing mechanism includes a connecting plate 6, which is connected to the U-shaped column 5 through four elastic components, and the four elastic components are arranged in a rectangular array. A handle 7 is fixedly installed on the top of the connecting plate 6, and the sides of the two fixing rings 2 are both installed with length adjustment components, and the two length adjustment components are respectively connected to the two sides of the connecting plate 6; like Figure 7As shown, the elastic component includes a mounting sleeve 37 fixedly mounted on the side of the U-shaped column 5, a driving rod 35 is slidably mounted in the mounting sleeve 37, the top of the driving rod 35 is fixedly connected to the bottom of the connecting plate 6, two stoppers 38 are fixedly sleeved on the driving rod 35, the stopper 38 located at the bottom contacts the bottom of the mounting sleeve 37, and the bottom end of the stopper 38 located at the top is fixedly mounted with a second spring 36 sleeved on the driving rod 35, and the bottom end of the second spring 36 is fixedly mounted on the top of the mounting sleeve 37. The second spring 36 is arranged so that a certain distance is left between the U-shaped column 5 and the connecting plate 6, and the connecting plate 6 can move after the U-shaped column 5 contacts the building component in the later stage.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the length adjustment assembly includes two mounting blocks 13 fixedly mounted on the side of the fixing ring 2, and the two mounting blocks 13 are both mounted with length adjustment units, and the two length adjustment units are connected to the side of the connecting plate 6. A rotating block 20 is fixedly mounted on the side of the fixing ring 2, and a positioning unit is mounted on the rotating block 20. The positioning unit is installed in cooperation with the two length adjustment units and the card slot 19; the length adjustment unit includes a rotating groove opened on the side of the mounting block 13, and a rotating shaft 15 is rotatably mounted on the inner wall of one side of the rotating groove, and one end of a pull rope 16 is fixedly mounted on the side of the rotating shaft 15, and the rotating groove The top and bottom inner walls of the mounting plate 17 are fixedly mounted, and the side of the mounting plate 17 is provided with a rope hole. The other end of the pull rope 16 is wound around the rotating shaft 15 for multiple turns and then passes through the rope hole and is fixedly connected to the side of the connecting plate 6. A round hole is provided on the inner wall of the other side of the rotating groove, and one end of the rotating shaft 15 passes through the round hole. A limit ring 23 is fixedly mounted on the side of the mounting block 13, and a torsion spring 24 is fixedly mounted on the inner wall of the limit ring 23 and the outer side of the rotating shaft 15. A plurality of evenly arranged blocking grooves 46 are provided on the annular side of the rotating shaft 15, and the positioning unit is installed in cooperation with the side of the rotating shaft 15. During the process of adjusting the angle and the spacing, the distance between the two fixed rings 2 changes, so that the four rotating shafts 15 rotate, the four torsion springs 24 are deformed, and the rotating shaft 15 rotates to unwind the pull rope 16. Due to the setting of the four torsion springs 24, the four pull ropes 16 can be kept in a taut state.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, the positioning unit includes a clamping screw 21 rotatably mounted on the side of the rotating block 20, and the rotating block 20 limits the clamping screw 21 so that the clamping screw 21 can only rotate and cannot move forward and backward. Specifically, the rotating block 20 can be connected to the end of the clamping screw 21 through a bearing, and an extrusion column 12 is threadedly sleeved on the clamping screw 21. Two extrusion rods 14 are fixedly mounted on the side of the extrusion column 12. The two extrusion rods 14 are provided with arc grooves at one end close to the rotating shaft 15, and the inner walls of the two arc grooves respectively abut against the sides of the two rotating shafts 15. Guide rods 22 are fixedly mounted on the sides of the two mounting blocks 13, and the extrusion column 12 is slidably sleeved on the two guide rods 22. Two clamping rods 9 are fixedly mounted on the top of the extrusion column 12, and clamping blocks are installed on the sides of the two clamping rods 9. The two clamping blocks correspond to the positions of the two clamping grooves 19 respectively, and a clamping knob is fixedly mounted on the side of the clamping screw 21 away from the mounting block 13. By turning the clamping knob, the clamping screw 21 rotates, thereby moving the extrusion column 12. The movement of the extrusion column 12 drives the two extrusion rods 14 to move, so that the two arc grooves can compress or loosen the side of the rotating shaft 15. At the same time, the movement of the extrusion column 12 drives the two clamping rods 9 to move. The movement of the two clamping rods 9 drives the two clamping blocks to move. When the spacing and angle need to be adjusted, the clamping block enters the clamping groove 19, so that the position of the fixing ring 2 is fixed. At the same time, the arc groove is separated from the side of the rotating shaft 15 to facilitate the extension of the pull rope 16. After the adjustment is completed, the rotating shaft 15 is fixed, the length of the pull rope 16 is fixed, and the clamping block is moved out of the clamping groove 19. The fixing ring 2 can slide, so that the pull rope 16 will drive the fixing ring 2 to move when it is pulled, thereby driving the contact electrode 3 to move and contact the building component.

[0030] like Fig. 9 As shown, the positioning unit also includes a groove opened on the inner wall of the arc groove, on the inner wall of the groove a blocking column 47 slidably installed in the groove is fixedly installed via a third spring 48, and one end of the blocking column 47 away from the third spring 48 extends into one of the blocking grooves 46. When limiting, the two extrusion rods 14 move and drive the two blocking columns 47 to move. When the two blocking columns 47 correspond to the positions of two of the blocking grooves 46, the two blocking columns 47 can enter the two blocking grooves 46. When the two blocking columns 47 do not correspond to the positions of the two blocking grooves 46, the two blocking columns 47 are pressed into the two grooves, and the two third springs 48 are deformed. After the third springs 48 are deformed, the card block moves out of the card slot 19. When the blocking columns 47 enter the blocking grooves 46, the rotating shaft 15 cannot rotate. When the blocking columns 47 do not enter the blocking grooves 46, if the pull rope 16 is pulled later to cause the rotating shaft 15 and the arc groove to produce relative displacement, when the rotating shaft 15 rotates, the blocking columns 47 will correspond to the blocking grooves 46. Under the action of the third springs 48, the blocking columns 47 will enter the blocking grooves 46, and then the rotating shaft 15 cannot rotate, thereby effectively limiting the rotating shaft 15.

[0031] The working principle and use process of the present invention are as follows: when in use, the contact electrode 3 is fixed to the fixing ring 2 by the fixing bolt 11, and one end of the contact electrode 3 passes through the sliding ring 4. A gap is left between the bottom end of the contact electrode 3 and the horizontal plane where the U-shaped column 5 is located. When the spacing between the two contact electrodes 3 needs to be adjusted, first, one of the clamping knobs is turned to rotate the clamping screw 21. The rotation of the clamping screw 21 drives the extrusion column 12 to move. The movement of the extrusion column 12 drives the two extrusion rods 14 to move. The two extrusion rods 14 move and separate from the side parts of the two rotating shafts 15. At the same time, the movement of the two extrusion rods 14 drives the two third springs 48 and the two blocking columns 47 to move. The two blocking columns 47 move out of the two blocking grooves 46. At the same time, the movement of the extrusion column 12 drives the two clamping rods 9 to move. The movement of the two clamping rods 9 drives the two clamping blocks to enter the two clamping grooves 19. Then, another clamping knob is turned to make the other two clamping blocks enter the other two clamping grooves 19 respectively. At the same time, the other two blocking columns 47 move out of the other two blocking grooves 46 respectively. The positioning bolt 45 is loosened to separate it from the top of the adjusting knob 25, and then the adjusting knob 25 is turned to rotate the adjusting column 34. The adjusting column 34 rotates through two oppositely arranged external threads so that the two threaded moving blocks 49 are moved closer to each other, thereby rotating the four side push rods 26, and then the two connecting blocks 29 and the two sliding rings 4 move away from each other. The two sliding rings 4 move away from each other, driving the two fixing rings 2 to move away from each other, and then the two contact electrodes 3 move away from each other, thereby adjusting the spacing between the two contact electrodes 3. When the angle of the two contact electrodes 3 needs to be adjusted to meet the detection of the cylindrical component, the limit bolt 43 is rotated to separate it from the top of the limit knob, and then the rotating screw 40 is rotated. The setting of the rotating hole is used to limit the rotating screw 40 so that it can only rotate but cannot move up and down. The rotation of the rotating screw 40 causes the upper moving column 33 to move upward, and the movement of the upper moving column 33 drives the rectangular sleeve 32 to move. The movement of the rectangular sleeve 32 drives the two rectangular rods 31 to move. The movement of the two rectangular rods 31 drives the two movable rods 30 to move upward, so that the two upper push rods 27 rotate, and the rotation of the two upper push rods 27 drives the two sliding rings 4 to rotate and tilt. The rotation of the two sliding rings 4 drives the two fixed rings 2 to rotate and tilt, so that the two contact electrodes 3 rotate and tilt, so as to adjust the angle; During the process of adjusting the angle and the spacing, the distance between the two fixing rings 2 changes, so that the four rotating shafts 15 rotate, the four torsion springs 24 are deformed, and the rotating shaft 15 rotates to unwind the drawstring 16. Due to the setting of the four torsion springs 24, the four drawstrings 16 can be kept in a taut state. After the adjustment is completed, the clamping screw 21 is moved by rotating one of the clamping knobs in the opposite direction, so that the two extrusion rods 14, the two clamping rods 9 and the two clamping blocks move, and the two clamping blocks slowly move out of the clamping grooves 19. At the same time, the arc grooves on the two extrusion rods 14 slowly contact the annular side portions of the two rotating shafts 15, and the two extrusion rods 14 are in contact with the annular side portions of the two rotating shafts 15. The movement of 14 drives the two blocking columns 47 to move. When the two blocking columns 47 correspond to the positions of two blocking grooves 46, the two blocking columns 47 can enter the two blocking grooves 46. When the positions of the two blocking columns 47 do not correspond to the two blocking grooves 46, the two blocking columns 47 are pressed into the two grooves, and the two third springs 48 are deformed. When the two arc grooves press the annular side portions of the two rotating shafts 15, the two clamping blocks move out of the two clamping grooves 19. At this time, the fixed ring 2 can move relative to the sliding ring 4, and then the other clamping knob can be rotated in the opposite direction to make the other two clamping blocks move out of the other two clamping grooves 19 respectively. Then, hold the handle 7 and align the two contact electrodes 3 with the building component on which the test grid lines are drawn in advance. Since there is a distance between the U-shaped column 5 and the bottom of the contact electrode 3, the U-shaped column 5 first contacts the component, and then continue to push the handle 7 to move the connecting plate 6. The movement of the connecting plate 6 drives the four driving rods 35 to move, and the four second springs 36 are deformed. At the same time, the connection plate 6 moves and pulls the four pull ropes 16, so that the two mounting blocks 13 move. The movement of the two mounting blocks 13 drives the two fixing rings 2 to move. The movement of the two fixing rings 2 drives the two contact electrodes 3 to move. The two contact electrodes 3 move downward and contact the component, and then operate the detection machine body 1 to measure the rust degree of the steel bars. The movement of the two fixing rings 2 causes the two first springs 18 to deform. After the measurement is completed, operate the handle 7 to move the two contact electrodes 3 away from the component. Under the action of the second spring 36 and the first spring 18, the connecting plate 6 and the contact electrode 3 are first restored to their original state, and then continue to move the handle 7 to separate the U-shaped column 5 from the building component.

[0032] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the above disclosed technical contents to change or modify them into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for detecting corrosion of embedded steel bars in a water conservancy project, comprising a detection machine body (1), wherein the detection machine body (1) is connected to two contact electrodes (3) via two signal lines (8), and characterized in that: A U-shaped column (5) is provided between the two contact electrodes (3); two connection blocks (29) are installed on the inner walls of both sides of the U-shaped column (5) via a distance adjustment mechanism; two sliding rings (4) are installed on the two connection blocks (29) via an angle adjustment mechanism; a fixing ring (2) is installed on the top of the two sliding rings (4) via a reset mechanism; the two contact electrodes (3) are respectively fixedly installed in the two fixing rings (2) via fixing bolts (11); a pushing mechanism is installed on the top of the U-shaped column (5); the pushing mechanism is installed in cooperation with the two reset mechanisms; The angle adjustment mechanism includes a synchronization component and two angle adjustment components; The angle adjustment component comprises a movable hole opened at the top of the connecting block (29), a movable rod (30) is slidably installed in the movable hole, both ends of the movable rod (30) extend outside the movable hole, an upper push rod (27) is rotatably installed at the top end of the movable rod (30), and the top end of the upper push rod (27) is rotatably installed on the side of the sliding ring (4), a connecting rod (28) is fixedly installed on the side of the connecting block (29), and one end of the connecting rod (28) away from the connecting block (29) is rotatably installed on the side of the sliding ring (4), and a rectangular rod (31) is fixedly installed on the side of the movable rod (30), and the rectangular rod (31) is connected to the synchronization component.

2. A water conservancy hub embedded steel bar corrosion detection device according to claim 1, characterized in that: The synchronization component comprises an adjustment plate (41) fixedly mounted on the side of the U-shaped column (5), a rotation hole is formed on the top of the adjustment plate (41), a rotating screw (40) is rotatably mounted in the rotation hole, an upward column (33) is threadedly sleeved on the rotating screw (40), a synchronization hole is formed on the inner wall of one side of the U-shaped column (5), a positioning rod (39) is fixedly mounted on the top and bottom inner walls of the synchronization hole, the upward column (33) is slidably sleeved on the positioning rod (39), a rectangular sleeve (32) is fixedly mounted on the top of the upward column (33), and the ends of the two rectangular rods (31) close to each other are slidably mounted in the two rectangular sleeves (32) respectively.

3. A water conservancy hub embedded steel bar corrosion detection device according to claim 2, characterized in that: The synchronization component further comprises a limit plate (42) fixedly mounted on the side of the U-shaped column (5), a threaded limit hole being formed at the top of the limit plate (42), a limit bolt (43) being threadedly mounted in the threaded limit hole, a limit knob being fixedly mounted at the top of the rotating screw rod (40), and a bottom end of the limit bolt (43) being in contact with a top of the limit knob.

4. A water conservancy hub embedded steel bar corrosion detection device according to claim 1, characterized in that: The distance adjustment mechanism comprises an adjustment column (34) rotatably mounted on the inner wall of one side of the U-shaped column (5), the adjustment column (34) being provided with two sections of external threads arranged in opposite directions, the two external threads being threadedly sleeved with threaded moving blocks (49), two side push rods (26) being rotatably mounted on both sides of the two threaded moving blocks (49), the ends of the two side push rods (26) on the same side away from the adjustment column (34) being rotatably mounted on the side of the adjacent connecting block (29), the connecting The distance between the block (29) and the two threaded moving blocks (49) is the same, a through hole is provided on the inner wall of the other side of the U-shaped column (5), one end of the adjusting column (34) passes through the through hole and is fixedly installed with an adjusting knob (25), a positioning plate (44) is fixedly installed on the side of the U-shaped column (5), a threaded positioning hole is provided on the top of the positioning plate (44), a positioning bolt (45) is threadedly installed in the threaded positioning hole, and the bottom end of the positioning bolt (45) abuts against the side of the adjusting knob (25).

5. The device for detecting corrosion of embedded steel bars in a water conservancy project according to claim 1, characterized in that: The reset mechanism comprises two slide bars (10) fixedly mounted on the top of the sliding ring (4); the fixed ring (2) is slidably sleeved on the two slide bars (10); a first spring (18) is sleeved on the slide bar (10); two ends of the first spring (18) are respectively fixedly mounted on the sides of the fixed ring (2) and the sliding ring (4) close to each other; a slot (19) is provided on the side of the slide bar (10); the slot (19) is mounted in cooperation with the pushing mechanism.

6. A water conservancy hub embedded steel bar corrosion detection device according to claim 5, characterized in that: The pushing mechanism comprises a connecting plate (6), the connecting plate (6) being connected to the U-shaped column (5) via four elastic components, the four elastic components being arranged in a rectangular array, a handle (7) being fixedly mounted on the top of the connecting plate (6), and length adjustment components being mounted on the sides of the two fixing rings (2), the two length adjustment components being respectively connected to the two side portions of the connecting plate (6); The elastic component comprises a mounting sleeve (37) fixedly mounted on the side of the U-shaped column (5), a driving rod (35) being slidably mounted in the mounting sleeve (37), the top end of the driving rod (35) being fixedly connected to the bottom of the connecting plate (6), two stoppers (38) being fixedly sleeved on the driving rod (35), the stopper (38) located at the bottom being in contact with the bottom of the mounting sleeve (37), and a second spring (36) sleeved on the driving rod (35) being fixedly mounted on the bottom end of the stopper (38) located at the top, and the bottom end of the second spring (36) being fixedly mounted on the top of the mounting sleeve (37).

7. A water conservancy hub embedded steel bar corrosion detection device according to claim 6, characterized in that: The length adjustment assembly comprises two mounting blocks (13) fixedly mounted on the side of the fixing ring (2), the two mounting blocks (13) being each mounted with a length adjustment unit, the two length adjustment units being connected to the side of the connecting plate (6), a rotating block (20) being fixedly mounted on the side of the fixing ring (2), a positioning unit being mounted on the rotating block (20), and the positioning unit being mounted in cooperation with the two length adjustment units and the card slot (19).

8. A water conservancy hub embedded steel bar corrosion detection device according to claim 7, characterized in that: The length adjustment unit comprises a rotating groove opened on the side of the mounting block (13); a rotating shaft (15) is rotatably mounted on the inner wall of one side of the rotating groove; one end of a pull rope (16) is fixedly mounted on the side of the rotating shaft (15); a mounting plate (17) is fixedly mounted on the top and bottom inner walls of the rotating groove; a rope hole is opened on the side of the mounting plate (17); the other end of the pull rope (16) is wound around the rotating shaft (15) for multiple turns, passes through the rope hole, and is connected to the connecting plate (6). ), a circular hole is provided on the inner wall of the other side of the rotating groove, one end of the rotating shaft (15) passes through the circular hole, a limiting ring (23) is fixedly installed on the side of the mounting block (13), a torsion spring (24) is fixedly installed on the inner wall of the limiting ring (23) and the outer side of the rotating shaft (15), a plurality of evenly arranged blocking grooves (46) are provided on the annular side of the rotating shaft (15), and the positioning unit is mounted in cooperation with the side of the rotating shaft (15).

9. A water conservancy hub embedded steel bar corrosion detection device according to claim 8, characterized in that: The positioning unit comprises a clamping screw (21) rotatably mounted on the side of the rotating block (20), an extrusion column (12) being threadedly sleeved on the clamping screw (21), two extrusion rods (14) being fixedly mounted on the side of the extrusion column (12), an arc groove being provided at one end of the two extrusion rods (14) close to the rotating shaft (15), the inner walls of the two arc grooves respectively abut against the sides of the two rotating shafts (15), guide rods (22) being fixedly mounted on the sides of the two mounting blocks (13), the extrusion column (12) being slidably sleeved on the two guide rods (22), two clamping rods (9) being fixedly mounted on the top of the extrusion column (12), clamping blocks being mounted on the sides of the two clamping rods (9), the two clamping blocks respectively corresponding to the positions of the two clamping grooves (19), and a clamping knob being fixedly mounted on the side of the clamping screw (21) away from the mounting block (13).

10. A water conservancy hub embedded steel bar corrosion detection device according to claim 9, characterized in that: The positioning unit further comprises a groove formed on the inner wall of the arc-shaped groove, on the inner wall of the groove a blocking column (47) is fixedly mounted via a third spring (48) and slidably mounted in the groove, and one end of the blocking column (47) away from the third spring (48) extends into one of the blocking grooves (46).

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