A hardness detection device for a water conservancy project bridge and its usage method

Abstract

The present invention discloses a hardness detection device for a hydraulic engineering bridge and its usage method, which relates to the technical field of bridge concrete detection. It includes a working plate and also includes a pre-positioning device. Among them, a U-shaped plate is fixedly installed at the bottom of the working plate, a servo motor is fixedly installed at the top of the U-shaped plate, a lead screw is fixedly installed at the output end of the servo motor, a slider is threadedly installed on the circumferential surface of the lead screw, the rear side of the slider is slidably connected to the inner wall of the U-shaped plate, a pressure sensor is fixedly installed on the front side of the slider, and a shielding frame is fixedly installed at the top of the working plate. Among them, the pre-positioning device includes a positioning rod, a positioning plate, an electric push rod, a clamping plate, a detection rod, a detection plate, an elastic telescopic block and a limiting groove. The clamping plate is limited by the free end of the elastic telescopic block and cannot excessively squeeze the column to be detected. Through pre-positioning, it can help ensure the accuracy of the measured part, thereby reducing the error of hardness detection.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge concrete detection, and particularly to a hardness detection device for a water conservancy project bridge and a using method thereof. Background Technique

[0002] A hardness detection device for a water conservancy project bridge generally consists of parts such as a pressure sensor, a clamping device, a protection device, and a driving device.

[0003] The patent with the patent announcement number CN216433706U relates to a hardness detection device for a water conservancy project bridge. Aiming at the problems that the existing concrete detection equipment is not convenient to use, not convenient to collect the particles generated by squeezing the concrete, and not convenient to adjust the detection position, the following scheme is now proposed. It includes a bottom box, a drawer is movably connected inside the bottom box, an L-shaped plate, a support box, a controller, and a motor are arranged on the top of the bottom box. A concrete block is placed on the top of the support box. A lead screw is rotatably installed inside the L-shaped plate. A telescopic mechanism is threadedly connected to the lead screw. A support cylinder is connected to the telescopic mechanism. A pressure sensor is embedded in the top of the support cylinder. A pressure seat is connected inside the support cylinder. The pressure seat is connected to the pressure sensor, and an installation seat is arranged at the bottom of the pressure seat. This patent is convenient to use, convenient to collect the particles generated by squeezing the concrete, and convenient to adjust the detection position.

[0004] In the above patent, by connecting a pressure seat inside the support cylinder, the pressure seat is connected to the pressure sensor, and an installation seat is arranged at the bottom of the pressure seat, it is convenient to collect the particles generated by squeezing the concrete and convenient to adjust the detection position. However, it is difficult to pre-position a columnar structure. If it is difficult to pre-position a columnar structure, the detection position of the pressure sensor will be inaccurate, resulting in errors in the hardness test results, and further affecting the assessment of the health of the bridge structure. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a hardness detection device for a water conservancy project bridge and a using method thereof, which solves the problems put forward in the above background technique.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A hardness detection device for a bridge in a water conservancy project, including a working plate, and further including a pre-positioning device. Among them, a U-shaped plate is fixedly installed at the bottom of the working plate, a servo motor is fixedly installed at the top of the U-shaped plate, a lead screw is fixedly installed at the output end of the servo motor, a slider is threadedly installed on the circumferential surface of the lead screw, the rear side of the slider is slidably connected to the inner wall of the U-shaped plate, a pressure sensor is fixedly installed on the front side of the slider, and a shielding frame is fixedly installed on the top of the working plate. Among them, the pre-positioning device includes a positioning rod, a positioning plate, an electric push rod, a clamping plate, a detection rod, a detection plate, an elastic telescopic block and a limiting groove. The downward movement of the elastic telescopic block causes the free end of the elastic telescopic block to contact the limiting groove and limit the clamping plate. The clamping plate is limited by the free end of the elastic telescopic block and cannot excessively squeeze the column to be detected. The positioning rod slidably penetrates the inner and outer walls of the working plate, the positioning plate is fixedly installed on the rear side of the positioning rod, the electric push rod fixedly penetrates the inner and outer walls of the shielding frame, the clamping plate is fixedly installed at the output end of the electric push rod, the detection rod slidably penetrates the left and right walls of the clamping plate, the detection plate is fixedly installed on the left side of the detection rod, the elastic telescopic block is slidably installed on the right side of the clamping plate, and the limiting groove is opened on the top of the working plate.

[0007] According to the above technical solution, a first spring is provided between the positioning plate and the shielding frame. The first spring can drive the positioning plate to reset. A second spring is provided between the detection plate and the clamping plate. The second spring can drive the detection plate to reset. The top of the elastic telescopic block is provided with an inclined surface.

[0008] According to the above technical solution, a third spring is provided between the elastic telescopic block and the clamping plate. The third spring can drive the elastic telescopic block to reset. The bottom of the free end of the elastic telescopic block is provided with an inclined surface. The right side of the detection rod is provided with an arc surface. The detection rod contacts the top of the elastic telescopic block. The reset of the elastic telescopic block can facilitate the reset of the clamping plate.

[0009] According to the above technical solution, an auxiliary device for preventing excessive rotation of the column structure is provided on the front side of the shielding frame, and a locking device is provided on the front side of the shielding frame. The auxiliary device includes a linkage hole, a stabilizing plate, a moving rod, a moving frame, an inclined surface frame, a rubber plate and a curved surface block. The movement of the inclined surface frame drives the rubber plate to move towards the direction close to the U-shaped plate. The movement of the rubber plate towards the direction close to the U-shaped plate squeezes and fixes the side surface of the column to be detected. The linkage hole is opened on the front side of the shielding frame, the stabilizing plate is fixedly installed on the inner wall of the linkage hole, the moving rod slidably penetrates the front and rear walls of the stabilizing plate, the moving frame is fixedly installed at both ends of the moving rod, the inclined surface frame is fixedly installed on the rear side of the moving frame, the rubber plate is fixedly installed on the inner wall of the inclined surface frame, and the curved surface block is fixedly installed on the inner wall of the shielding frame.

[0010] According to the above technical solution, a fourth spring is arranged between the moving frame and the stabilizing plate, and the moving frame can be driven to reset by the fourth spring. An arc-shaped block is fixedly installed on the inner wall of the moving frame, and one side of the moving frame away from the rubber plate is set as an inclined surface.

[0011] According to the above technical solution, an arc-shaped block is fixedly installed on the inner wall of the moving frame. The inclined surface frame is elastic, and the moving frame contacts the clamping plate.

[0012] According to the above technical solution, the locking device includes a support tube, a support plate, a support rod, a locking plate, a locking rod, a locking groove and a connecting frame. When the locking rod moves and contacts the locking groove, it limits the positioning rod. The positioning rod is limited by the locking rod and cannot move during the hardness detection of the column body. The support tube fixedly penetrates through the front side of the shielding frame. The support plate is slidably installed on the inner wall of the support tube. The support rod is fixedly installed on the right side of the support plate. The locking plate is slidably installed on the inner wall of the support tube. The locking rod is fixedly installed on the left side of the support plate. The locking groove is opened on the circumferential surface of the positioning rod. The connecting frame is fixedly installed on the right side of the support plate. The support rod contacts the inner wall of the connecting frame.

[0013] According to the above technical solution, the right side of the support rod is set as an inclined surface. A fifth spring is arranged between the support tube and the support plate. One end of the fifth spring is arranged on the inner wall of the support tube, and the other end is arranged on the left side of the support plate. The support plate can be driven to reset by the fifth spring. There is liquid inside the support tube.

[0014] A use method of a hardness detection device for a water conservancy project bridge, using the above hardness detection device for a water conservancy project bridge, includes the following steps:

[0015] Step 1: Manually pull the two positioning rods to move towards each other. The two positioning rods moving towards each other drive the two positioning plates to move towards each other, and place the column body to be detected on the top of the working plate.

[0016] Step 2: After the column body to be detected is placed on the top of the working plate, release the two positioning rods so that the two positioning plates move towards each other under the elastic force of the first spring. The two positioning plates moving towards each other contact the column body to be detected and perform extrusion pre-positioning on the column body to be detected.

[0017] Step 3: After the clamping plate clamps the column body to be detected stably, the servo motor operates to drive the lead screw to rotate. The rotation of the lead screw drives the slider to move downward.

[0018] Step 4: The downward movement of the slider drives the pressure sensor to move downward. The downward movement of the pressure sensor contacts the column body to be detected and performs hardness detection.

[0019] The present invention provides a hardness detection device for a water conservancy project bridge. It has the following beneficial effects:

[0020] (1) In this invention, two positioning plates move towards each other to contact the cylinder to be detected and perform extrusion pre-positioning on the cylinder to be detected. Cylindrical structures usually have irregular shapes. Through pre-positioning, it can help ensure the accuracy of the measurement part, thereby reducing the error of hardness detection. The elastic telescopic block moves downward so that the free end of the elastic telescopic block contacts the limit groove and limits the clamping plate. The clamping plate is limited by the free end of the elastic telescopic block and cannot excessively squeeze the cylinder to be detected. By preventing the clamping plate from excessively clamping the cylinder, it ensures that the applied clamping force is uniform, avoiding local overpressure or uneven deformation of the cylinder, thereby improving the accuracy of the hardness detection result.

[0021] (2) In this invention, the inclined plane frame moves to drive the rubber plate to move towards the U-shaped plate. The rubber plate moves towards the U-shaped plate to squeeze and fix the side surface of the cylinder to be detected. Through the anti-rotation effect of the rubber plate on the cylinder, the rubber plate can effectively fix the side of the cylinder, thereby preventing the cylinder from rotating excessively during the hardness test, further ensuring the accuracy of the test result. The inclined plane frame and the rubber plate generate deformation to shake off the debris adhering to their surfaces. By shaking off the debris or particles adhering to the surface of the rubber plate, it can avoid the debris affecting the support effect of the rubber plate, thereby ensuring the accuracy and reliability of the detection result.

[0022] (3) In this invention, the locking plate moves towards the positioning rod to drive the locking rod to move. The locking rod moves to contact the locking groove and limit the positioning rod. The positioning rod is limited by the locking rod and cannot move during the hardness detection of the cylinder. By restricting the movement of the positioning rod, it can effectively avoid the position of the cylinder shifting during the detection process, thereby reducing the interference caused by human accidental touch, and further ensuring that the cylinder remains stationary during the test, avoiding deviation of the test data due to the shaking of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the position structure of the U-shaped plate and the servo motor of the present invention;

[0025] Figure 3 is of the present invention Figure 2 enlarged schematic diagram of the structure of part A;

[0026] Figure 4 is a schematic diagram of the position structure of the shielding frame and the linkage hole of the present invention;

[0027] Figure 5 is of the present invention Figure 4 enlarged schematic diagram of the structure of part B;

[0028] Figure 6 Schematic diagram of the position structure of the inclined plane frame and the rubber plate of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure of part C in it.

[0030] In the figure: 1, working plate; 2, U-shaped plate; 31, servo motor; 32, lead screw; 33, slider; 4, pressure sensor; 5, shielding frame; 6, positioning rod; 7, positioning plate; 8, electric push rod; 9, clamping plate; 10, detection rod; 11, detection plate; 12, elastic telescopic block; 13, limiting groove; 141, linkage hole; 142, stabilizing plate; 143, moving rod; 144, moving frame; 145, inclined plane frame; 146, rubber plate; 147, arc-shaped block; 148, curved surface block; 151, support pipe; 152, support plate; 153, support rod; 154, locking plate; 155, locking rod; 156, locking groove; 157, connection frame. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 5, an embodiment of the present invention is: a hardness detection device for a water conservancy project bridge, including a working plate 1, and further including a pre-positioning device. Among them, a U-shaped plate 2 is fixedly installed at the bottom of the working plate 1, a servo motor 31 is fixedly installed at the top of the U-shaped plate 2, a lead screw 32 is fixedly installed at the output end of the servo motor 31, a slider 33 is threadedly installed on the circumferential surface of the lead screw 32, the rear side of the slider 33 is slidably connected to the inner wall of the U-shaped plate 2, a pressure sensor 4 is fixedly installed on the front side of the slider 33, and a shielding frame 5 is fixedly installed at the top of the working plate 1. Among them, the pre-positioning device includes a positioning rod 6, a positioning plate 7, an electric push rod 8, a clamping plate 9, a detection rod 10, a detection plate 11, an elastic telescopic block 12 and a limiting groove 13. The positioning rod 6 slidably penetrates the inner and outer walls of the working plate 1, the positioning plate 7 is fixedly installed at the rear side of the positioning rod 6, the electric push rod 8 fixedly penetrates the inner and outer walls of the shielding frame 5, the clamping plate 9 is fixedly installed at the output end of the electric push rod 8, the detection rod 10 slidably penetrates the left and right walls of the clamping plate 9, the detection plate 11 is fixedly installed on the left side of the detection rod 10, the elastic telescopic block 12 is slidably installed on the right side of the clamping plate 9, and the limiting groove 13 is opened at the top of the working plate 1. Through pre-positioning, it can help ensure the accuracy of the measured part, thereby reducing the error of hardness detection. By preventing the clamping plate 9 from over-clamping the column, it ensures that the applied clamping force is uniform, avoiding local overpressure or uneven deformation of the column, thereby improving the accuracy of the hardness detection result.

[0033] A first spring is arranged between the positioning plate 7 and the shielding frame 5. Through the first spring, the positioning plate 7 can be driven to reset. A second spring is arranged between the detection plate 11 and the clamping plate 9. Through the second spring, the detection plate 11 can be driven to reset. The top of the elastic telescopic block 12 is set as an inclined surface.

[0034] A third spring is arranged between the elastic telescopic block 12 and the clamping plate 9. Through the third spring, the elastic telescopic block 12 can be driven to reset. The bottom of the free end of the elastic telescopic block 12 is set as an inclined surface. The right side of the detection rod 10 is set as an arc surface. The detection rod 10 contacts the top of the elastic telescopic block 12. Through the reset of the elastic telescopic block 12, it is convenient for the clamping plate 9 to reset.

[0035] A use method of a hardness detection device for a water conservancy project bridge, using the above-mentioned hardness detection device for a water conservancy project bridge, includes the following steps:

[0036] Step 1: Manually pull the two positioning rods 6 to move towards each other. The two positioning rods 6 moving towards each other drive the two positioning plates 7 to move towards each other, and place the column to be detected on the top of the working plate 1;

[0037] Step 2: After the column to be detected is placed on the top of the working plate 1, release the two positioning rods 6 so that the two positioning plates 7 move towards each other under the elastic force of the first spring. The two positioning plates 7 move towards each other and contact the column to be detected and perform extrusion pre-positioning on the column to be detected;

[0038] Step 3: After the clamping plate 9 stably clamps the cylinder to be detected, the servo motor 31 operates to drive the lead screw 32 to rotate, and the rotation of the lead screw 32 drives the slider 33 to move downward;

[0039] Step 4: The downward movement of the slider 33 drives the pressure sensor 4 to move downward. The downward movement of the pressure sensor 4 contacts the cylinder to be detected and performs a hardness test.

[0040] During the operation of this embodiment: Manually pull the two positioning rods 6 to move towards each other. The movement of the two positioning rods 6 towards each other drives the two positioning plates 7 to move towards each other. The two positioning plates 7 moving towards each other squeeze the first spring. The first spring deforms and stores energy under the extrusion of the positioning plate 7. At the same time, place the cylinder to be detected on the top of the working plate 1. After the cylinder to be detected is placed on the top of the working plate 1, release the two positioning rods 6 so that the two positioning plates 7 move towards each other under the elastic force of the first spring. The two positioning plates 7 moving towards each other contact the cylinder to be detected and perform extrusion pre-positioning on the cylinder to be detected. After the pre-positioning of the cylinder to be detected is completed, the electric push rod 8 operates to drive the clamping plate 9 to move towards the positioning plate 7. The movement of the clamping plate 9 towards the positioning plate 7 drives the detection rod 10 and the detection plate 11 to move. The detection plate 11 moving towards the positioning plate 7 contacts the cylinder and squeezes the cylinder. At the same time, the detection plate 11 moves towards the elastic telescopic block 12 under the reaction force of the squeezed cylinder. The movement of the detection plate 11 towards the elastic telescopic block 12 squeezes the second spring. The second spring deforms and stores energy under the extrusion of the detection plate 11. At the same time, the movement of the detection plate 11 towards the elastic telescopic block 12 drives the detection rod 10 to move. The movement of the detection rod 10 contacts the inclined surface of the elastic telescopic block 12 and squeezes the elastic telescopic block 12. The elastic telescopic block 12 moves downward under the extrusion of the detection rod 10. The downward movement of the elastic telescopic block 12 causes the free end of the elastic telescopic block 12 to contact the limit groove 13 and limit the clamping plate 9. The clamping plate 9 cannot excessively squeeze the cylinder to be detected due to the limitation of the free end of the elastic telescopic block 12. After the clamping plate 9 stably clamps the cylinder to be detected, the servo motor 31 operates to drive the lead screw 32 to rotate, the rotation of the lead screw 32 drives the slider 33 to move downward, the downward movement of the slider 33 drives the pressure sensor 4 to move downward, and the downward movement of the pressure sensor 4 contacts the cylinder to be detected and performs a hardness test.

[0041] Please refer to Figures 1 - 7, on the basis of the above embodiments, in another embodiment of the present invention, an auxiliary device for preventing excessive rotation of the columnar structure is provided on the front side of the shielding frame 5, and a locking device is provided on the front side of the shielding frame 5. The auxiliary device includes a linkage hole 141, a stabilizing plate 142, a moving rod 143, a moving frame 144, an inclined plane frame 145, a rubber plate 146, and a curved surface block 148. The linkage hole 141 is opened on the front side of the shielding frame 5, the stabilizing plate 142 is fixedly installed on the inner wall of the linkage hole 141, the moving rod 143 slidably penetrates the front and rear walls of the stabilizing plate 142, the moving frame 144 is fixedly installed at both ends of the moving rod 143, the inclined plane frame 145 is fixedly installed on the rear side of the moving frame 144, the rubber plate 146 is fixedly installed on the inner wall of the inclined plane frame 145, and the curved surface block 148 is fixedly installed on the inner wall of the shielding frame 5. Through the anti-rotation effect of the rubber plate 146 on the column, the rubber plate 146 can effectively fix the side of the column, thereby preventing the column from rotating excessively during the hardness test and further ensuring the accuracy of the test results.

[0042] A fourth spring is provided between the moving frame 144 and the stabilizing plate 142. The fourth spring can drive the moving frame 144 to reset. An arc-shaped block 147 is fixedly installed on the inner wall of the moving frame 144, and the side of the moving frame 144 away from the rubber plate 146 is an inclined plane.

[0043] An arc-shaped block 147 is fixedly installed on the inner wall of the moving frame 144. The inclined plane frame 145 is elastic. The moving frame 144 contacts the clamping plate 9. By shaking off the debris or particles adhering to the surface of the rubber plate 146, it is possible to prevent the debris from affecting the supporting effect of the rubber plate 146, thereby ensuring the accuracy and reliability of the detection results.

[0044] The locking device includes a support tube 151, a support plate 152, a support rod 153, a locking plate 154, a locking rod 155, a locking groove 156, and a connecting frame 157. The support tube 151 fixedly penetrates the front side of the shielding frame 5, the support plate 152 is slidably installed on the inner wall of the support tube 151, the support rod 153 is fixedly installed on the right side of the support plate 152, the locking plate 154 is slidably installed on the inner wall of the support tube 151, the locking rod 155 is fixedly installed on the left side of the support plate 152, the locking groove 156 is opened on the circumferential surface of the positioning rod 6, and the connecting frame 157 is fixedly installed on the right side of the support plate 152. The support rod 153 contacts the inner wall of the connecting frame 157. By restricting the movement of the positioning rod 6, it is possible to effectively prevent the position of the column from shifting during the detection process, thereby reducing the interference caused by human accidental touch and further ensuring that the column remains stationary during the test and avoiding deviation of the test data due to the shaking of the column.

[0045] The right side of the support rod 153 is set as an inclined surface. A fifth spring is arranged between the support tube 151 and the support plate 152. One end of the fifth spring is arranged on the inner wall of the support tube 151, and the other end is arranged on the left side of the support plate 152. The support plate 152 can be driven to reset by the fifth spring. There is liquid inside the support tube 151.

[0046] When this embodiment works: The electric push rod 8 operates to drive the clamping plate 9 to move towards the positioning plate 7. The clamping plate 9 moves towards the positioning plate 7 and contacts the inclined surface of the moving frame 144 and squeezes the moving frame 144. The moving frame 144 moves towards the U-shaped plate 2 under the extrusion of the clamping plate 9. The moving frame 144 moves towards the U-shaped plate 2 and pulls the fourth spring. The fourth spring deforms and stores energy under the pull of the moving frame 144. At the same time, the moving frame 144 moves towards the U-shaped plate 2 and drives the inclined surface frame 145 to move. The inclined surface frame 145 moves and drives the rubber plate 146 to move towards the U-shaped plate 2. The rubber plate 146 moves towards the U-shaped plate 2 and squeezes and fixes the side surface of the column to be detected. When the electric push rod 8 operates to drive the clamping plate 9 to move away from the positioning plate 7 and reset, the clamping plate 9 resets and disengages from the contact with the moving frame 144. After the moving frame 144 disengages from the contact with the clamping plate 9, the moving frame 144 moves away from the U-shaped plate 2 and resets under the elastic force of the fourth spring. The moving frame 144 moves away from the U-shaped plate 2 and drives the inclined surface frame 145 to move and reset. The inclined surface frame 145 moves and resets and squeezes the curved surface block 148. The inclined surface frame 145 generates a deformation under the reaction force of the squeezed curved surface block 148. The inclined surface frame 145 generates a deformation so that the rubber plate 146 deforms together. The inclined surface frame 145 and the rubber plate 146 generate a deformation to shake off the debris adhered to the surface.

[0047] Moving the moving frame 144 in the direction close to the U-shaped plate 2 drives the arc-shaped block 147 to move. The movement of the arc-shaped block 147 contacts the inclined surface of the support rod 153 and squeezes the support rod 153. The support rod 153 moves in the direction close to the positioning rod 6 under the extrusion of the arc-shaped block 147. The movement of the support rod 153 in the direction close to the positioning rod 6 drives the support plate 152 to move. The movement of the support plate 152 in the direction close to the positioning rod 6 squeezes the fifth spring. The fifth spring deforms and stores energy under the extrusion of the support plate 152. At the same time, the support plate 152 squeezes the liquid inside the support tube 151 in the direction close to the positioning rod 6. The liquid inside the support tube 151 moves in the direction close to the locking plate 154 under the extrusion of the support plate 152 and squeezes the locking plate 154. The locking plate 154 moves in the direction close to the positioning rod 6 under the extrusion of the liquid inside the support tube 151. The movement of the locking plate 154 in the direction close to the positioning rod 6 drives the locking rod 155 to move. The movement of the locking rod 155 contacts the locking groove 156 and limits the positioning rod 6. The positioning rod 6 cannot move during the column hardness detection under the limitation of the locking rod 155.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hardness detection device for a water conservancy project bridge, comprising a working plate (1), characterized in that: It also includes a pre-positioning device; Among them, a U-shaped plate (2) is fixedly installed at the bottom of the working plate (1), a servo motor (31) is fixedly installed at the top of the U-shaped plate (2), a lead screw (32) is fixedly installed at the output end of the servo motor (31), a slider (33) is threadedly installed on the circumferential surface of the lead screw (32), the rear side of the slider (33) is slidably connected to the inner wall of the U-shaped plate (2), a pressure sensor (4) is fixedly installed on the front side of the slider (33), and a shielding frame (5) is fixedly installed at the top of the working plate (1); Among them, the pre-positioning device includes a positioning rod (6), a positioning plate (7), an electric push rod (8), a clamping plate (9), a detection rod (10), a detection plate (11), an elastic telescopic block (12) and a limiting groove (13). The positioning rod (6) slidably penetrates the inner and outer walls of the working plate (1), the positioning plate (7) is fixedly installed at the rear side of the positioning rod (6), the electric push rod (8) fixedly penetrates the inner and outer walls of the shielding frame (5), the clamping plate (9) is fixedly installed at the output end of the electric push rod (8), the detection rod (10) slidably penetrates the left and right walls of the clamping plate (9), the detection plate (11) is fixedly installed on the left side of the detection rod (10), the elastic telescopic block (12) is slidably installed on the right side of the clamping plate (9), and the limiting groove (13) is opened at the top of the working plate (1); Among them, an auxiliary device for preventing the excessive rotation of the cylindrical structure is arranged on the front side of the shielding frame (5), and a locking device is arranged on the front side of the shielding frame (5); A first spring is arranged between the positioning plate (7) and the shielding frame (5), a second spring is arranged between the detection plate (11) and the clamping plate (9), and the top of the elastic telescopic block (12) is set as an inclined surface; A third spring is arranged between the elastic telescopic block (12) and the clamping plate (9), the bottom of the free end of the elastic telescopic block (12) is set as an inclined surface, the right side of the detection rod (10) is set as an arc surface, and the detection rod (10) is in contact with the top of the elastic telescopic block (12); The auxiliary device includes a linkage hole (141), a stabilizing plate (142), a moving rod (143), a moving frame (144), an inclined surface frame (145), a rubber plate (146) and a curved surface block (148). The linkage hole (141) is opened on the front side of the shielding frame (5), the stabilizing plate (142) is fixedly installed on the inner wall of the linkage hole (141), the moving rod (143) slidably penetrates the front and rear walls of the stabilizing plate (142), the moving frame (144) is fixedly installed at both ends of the moving rod (143), the inclined surface frame (145) is fixedly installed at the rear side of the moving frame (144), the rubber plate (146) is fixedly installed on the inner wall of the inclined surface frame (145), and the curved surface block (148) is fixedly installed on the inner wall of the shielding frame (5); A fourth spring is arranged between the moving frame (144) and the stabilizing plate (142), an arc-shaped block (147) is fixedly installed on the inner wall of the moving frame (144), and the side of the moving frame (144) away from the rubber plate (146) is set as an inclined surface; An arc-shaped block (147) is fixedly installed on the inner wall of the moving frame (144). The inclined plane frame (145) is elastic, and the moving frame (144) contacts the clamping plate (9).

2. The hardness detection device for a water conservancy project bridge according to claim 1, wherein: The locking device includes a support tube (151), a support plate (152), a support rod (153), a locking plate (154), a locking rod (155), a locking groove (156) and a connecting frame (157). The support tube (151) fixedly penetrates through the front side of the shielding frame (5). The support plate (152) is slidably installed on the inner wall of the support tube (151). The support rod (153) is fixedly installed on the right side of the support plate (152). The locking plate (154) is slidably installed on the inner wall of the support tube (151). The locking rod (155) is fixedly installed on the left side of the support plate (152). The locking groove (156) is formed on the circumferential surface of the positioning rod (6). The connecting frame (157) is fixedly installed on the right side of the support plate (152). The support rod (153) contacts the inner wall of the connecting frame (157).

3. The hardness detection device for a water conservancy project bridge according to claim 2, wherein: The right side of the support rod (153) is provided with an inclined surface. A fifth spring is arranged between the support tube (151) and the support plate (152). There is liquid inside the support tube (151).

4. A method for using a hardness detection device for a hydraulic engineering bridge, using the hardness detection device for a hydraulic engineering bridge described in claim 3, characterized in that, It includes the following steps: Step 1: Manually pull the two positioning rods (6) to move towards each other. The two positioning rods (6) moving towards each other drive the two positioning plates (7) to move towards each other, and place the cylinder to be detected on the top of the working plate (1). Step 2: After the cylinder to be detected is placed on the top of the working plate (1), release the two positioning rods (6) so that the two positioning plates (7) move towards each other under the elastic force of the first spring. The two positioning plates (7) moving towards each other contact the cylinder to be detected and perform extrusion pre-positioning on the cylinder to be detected. Step 3: After the clamping plate (9) clamps the cylinder to be detected stably, the servo motor (31) operates to drive the lead screw (32) to rotate. The lead screw (32) rotating drives the slider (33) to move downward. Step 4: The slider (33) moving downward drives the pressure sensor (4) to move downward. The pressure sensor (4) moving downward contacts the cylinder to be detected and performs hardness detection.

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