A hydraulic hoist piston rod corrosion detection device based on hydraulic engineering

Abstract

The application discloses a hydraulic piston rod corrosion detection equipment based on hydraulic engineering, and relates to the technical field of water conservancy detection. The first circular arc support frame and the second circular arc support frame are connected through bolts at the end where they abut each other, and the auxiliary moving mechanism is arranged on the surface of the first circular arc support frame and the second circular arc support frame. The auxiliary moving mechanism comprises a plurality of groups of first guide rods which are inserted into the first circular arc support frame and the second circular arc support frame, and the first guide rods are arranged in pairs to form a group. The end of the first guide rods close to each other is fixedly connected with a connecting frame, so as to solve the problem that manual moving of the probe is difficult to ensure continuous and uniform detection track, and the problem that the completeness and accuracy of the detection result are affected.

Description

Technical Field

[0001] This invention relates to the field of water conservancy testing technology, and more specifically, to a device for detecting corrosion of piston rods in hydraulic gate hoists based on water conservancy projects. Background Technology

[0002] The piston rod corrosion detection device is a testing equipment used to detect the corrosion status of piston rods in hydraulic gate hoists in water conservancy projects, in order to assess their corrosion degree and safety.

[0003] In piston rod corrosion detection, ultrasonic pulses are typically used. The probe emits ultrasonic waves into the piston rod, and the location and size of corrosion defects are determined by receiving the reflected echoes from the interface. However, to obtain corrosion information from multiple locations on the piston rod, the probe must be tightly fitted to the piston rod surface and frequently moved to cover different detection points. Currently, this operation is mostly done manually, making it difficult to ensure uniform probe movement. This easily leads to missed detections or uneven coverage, resulting in some corrosion areas not being effectively identified, thus affecting the completeness and accuracy of the detection results. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide a corrosion detection device for the piston rod of a hydraulic gate hoist in water conservancy engineering, so as to solve the problem that it is difficult to ensure the continuous and uniform detection trajectory when the probe is manually moved, which affects the integrity and accuracy of the detection results.

[0005] To solve the above problems, the present invention adopts the following technical solution: A corrosion detection device for piston rods of hydraulic gate hoists in water conservancy engineering includes a first arc support frame and a second arc support frame. The two ends of the first and second arc support frames abut against each other to form a ring structure. The abutting ends of the first and second arc support frames are fixedly connected by bolts. The device also includes an auxiliary moving mechanism disposed on the surfaces of the first and second arc support frames. The auxiliary moving mechanism includes multiple sets of first guide rods inserted into the interior of the first and second arc support frames. The multiple first guide rods are arranged in pairs. A connecting frame is fixedly connected to the ends of the multiple sets of first guide rods that are close to each other. Rolling wheel shafts are rotatably connected to the surface of the connecting frame. The multiple rolling wheel shafts are all inclined in the same direction. A supporting cross plate is fixedly connected to the ends of the multiple sets of first guide rods that are away from the connecting frame.

[0006] Furthermore, the roller axle is made of non-slip rubber material, and a screw is rotatably connected to the surface of one of the connecting frames on the surface of the first arc support frame. The screw is rotatably inserted into the interior of the corresponding support plate, and the screw is threaded into the interior of the first arc support frame.

[0007] Furthermore, in addition to the connecting frame connected to the screw, the surfaces of the plurality of connecting frames are fixedly connected with first springs, and the ends of the plurality of first springs away from the connecting frame are respectively fixedly connected to the inner arc surfaces of the first arc support frame and the second arc support frame.

[0008] Furthermore, a support frame is fixedly connected to the surface of the support plate connected to the screw, a first motor is fixedly connected to the surface of the support frame, an active rotating wheel is fixedly connected to the output shaft of the first motor, a passive rotating wheel is fixedly connected to the upper end of the rotating wheel shaft, and multiple tooth blocks are fixedly connected to the surfaces of both the active and passive rotating wheels, with the two sets of tooth blocks meshing with each other.

[0009] Furthermore, a controller is fixedly connected to the surface of the second arc support frame, a probe line is electrically connected to the top of the controller, and an ultrasonic probe is electrically connected to the end of the probe line away from the controller.

[0010] Furthermore, a second spring is fixedly connected to the back of the controller, and a first support plate is fixedly connected to the end of the second spring away from the controller. The first support plate is fixedly connected to the surface of the ultrasonic probe, and two second guide rods are slidably inserted inside the first support plate. Both second guide rods are fixedly connected to the back of the controller.

[0011] Furthermore, it also includes an anti-slip mechanism, which is disposed on the surface of the rolling wheel shaft. The anti-slip mechanism includes a first rotating shaft fixedly connected to the lower axis of the plurality of rolling wheel shafts. A plurality of dispersing airflow pipes are fixedly inserted inside the first rotating shaft. The first rotating shaft is a hollow structure. The plurality of dispersing airflow pipes are all connected to the interior of the first rotating shaft. An air cover is fixedly connected to one end of the plurality of dispersing airflow pipes that is far away from each other. A plurality of partition plates are fixedly connected inside the air cover. The plurality of partition plates divide the interior of the air cover into a plurality of independent spaces. The plurality of dispersing airflow pipes are respectively connected to the plurality of independent spaces separated by the partition plates. The air cover and the partition plates are both made of flexible rubber material.

[0012] Furthermore, a gathering airflow pipe is rotatably inserted inside the first rotating shaft, and the lower ends of the plurality of gathering airflow pipes are connected to a gas delivery hose. An air pump is fixedly connected to the surface of the second arc support frame, and the air pump's suction port is connected to a suction pipe, which is connected to the gas delivery hose.

[0013] Furthermore, it also includes a cleaning mechanism, which is disposed on the surface of the first arc support frame and the second arc support frame. The cleaning mechanism includes a plurality of second support plates fixedly connected to the inner arc surfaces of the first arc support frame and the second arc support frame. The upper and lower ends of the plurality of second support plates are fixedly connected to third support plates. The surface of the third support plate is rotatably connected to a second rotating shaft. The surface of the second rotating shaft is fixedly connected to a stripping blade. The ultrasonic probe is located between two stripping blades.

[0014] Furthermore, an elastic sheet is provided between the peeling blade and the third support plate, and the two ends of the elastic sheet are fixedly connected to the peeling blade and the third support plate, respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) In this scheme, the first motor drives the active and passive rotating wheels to rotate, which in turn drives the corresponding rolling wheel shaft to roll on the piston rod surface. Since the rolling wheel shaft is inclined, when the rolling wheel shaft rotates, it can drive the entire device to move upward in a spiral upward posture, reducing omissions in the detection process and improving the trajectory uniformity in the detection process.

[0016] (2) In this scheme, the controller and ultrasonic probe are moved during the equipment movement. Since the second spring is always in a compressed state, the second spring pushes the ultrasonic probe to always be in close contact with the surface of the piston rod. The ultrasonic probe is used to detect the corrosion, preventing the ultrasonic probe from detaching from the surface of the piston rod during the detection process and affecting the detection results.

[0017] (3) In this scheme, when the first arc support frame and the second arc support frame rotate and move in a spiral, the elastic sheet in the state of compression deformation pushes the blade edge of the peeling blade to always be in contact with the surface of the piston rod. While driving the peeling blade to move, the peeling blade removes and peels off the grease hard shell on the piston rod, reducing the impact on the test results.

[0018] (4) In this scheme, when the rolling wheel shaft is in contact with the piston rod surface, the flexible rubber air cover is in contact with the piston rod surface, so that the independent space separated by the partition covers the piston rod surface. The air pump draws out the air in the independent space to make it negative pressure and adsorbs it onto the piston rod surface, reducing the slippage that occurs during the movement of the rolling wheel shaft, and further reducing the impact on the piston rod detection results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first and second arc support frames of the present invention; Figure 3This is a schematic diagram of the active and passive rotating wheel components of the present invention; Figure 4 This is a schematic diagram of the connecting frame portion of the present invention; Figure 5 This is a schematic diagram of the controller part of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the first and second arc support frames of the present invention; Figure 7 This is a schematic diagram of the structure of the gas delivery hose portion of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the peeling blade portion of the present invention.

[0020] Explanation of the labels in the diagram: 101. First arc support frame; 102. Second arc support frame; 103. Bolt; 201. Controller; 202. Connecting frame; 203. First motor; 204. Support frame; 205. Active rotating wheel; 206. Passive rotating wheel; 207. Tooth block; 208. Screw; 209. First guide rod; 210. Support plate; 211. Roller shaft; 212. First spring; 213. Ultrasonic probe; 214. Second guide rod; 215. First support plate; 216. Second spring; 217. Probe cable; 301. Gas delivery hose; 302. Air pump; 303. Suction pipe; 304. First rotating shaft; 305. Air hood; 306. Separator; 307. Dispersing airflow pipe; 308. Converging airflow pipe; 309. Second support plate; 310. Peeling blade; 311. Third support plate; 312. Elastic sheet; 313. Second rotating shaft. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-5A corrosion detection device for piston rods of hydraulic gate hoists in water conservancy engineering includes a first arc-shaped support frame 101 and a second arc-shaped support frame 102. The two ends of the first and second arc-shaped support frames 101 and 102 abut against each other to form a circular ring structure. One end of the first and second arc-shaped support frames 101 and 102 abutting against each other is fixedly connected by bolts 103. The device also includes an auxiliary moving mechanism disposed on the surface of the first and second arc-shaped support frames 101 and 102. The assist mechanism includes multiple sets of first guide rods 209 inserted into the interior of the first arc support frame 101 and the second arc support frame 102. The multiple first guide rods 209 are arranged in pairs, and a connecting frame 202 is fixedly connected to the ends of each pair of first guide rods 209. Rolling wheel shafts 211 are rotatably connected to the surface of the connecting frame 202. The multiple rolling wheel shafts 211 are all inclined in the same direction, and the axes of the multiple rolling wheel shafts (211) have a common inclination angle θ with the vertical axis of the piston rod, wherein θ = 5°. ≤θ≤15 The axial climbing lead L of the device for each rotation satisfies the formula L=πDtanθ (where D is the outer diameter of the piston rod). By adjusting the tilt angle θ, the lead L can be controlled to be less than or equal to the effective detection width of the ultrasonic probe (213) to ensure that the scanning trajectory is continuous and without missed detection. The ends of the first guide rods 209 away from the connecting frame 202 are all fixedly connected to the support plate 210.

[0023] The rolling wheel shaft 211 is made of anti-slip rubber. A screw 208 is rotatably connected to the surface of one of the connecting brackets 202 on the surface of the first arc support frame 101. The screw 208 is rotatably inserted into the interior of the corresponding support plate 210. The screw 208 is threaded into the interior of the first arc support frame 101. A first spring 212 is fixedly connected to the surface of each of the connecting brackets 202 except the one connected to the screw 208. The ends of the multiple first springs 212 away from the connecting brackets 202 are respectively connected to… The inner arc surfaces of the first arc support frame 101 and the second arc support frame 102 are fixedly connected. A support frame 204 is fixedly connected to the surface of the support cross plate 210 connected to the screw 208. A first motor 203 is fixedly connected to the surface of the support frame 204. An active rotating wheel 205 is fixedly connected to the output shaft of the first motor 203. A passive rotating wheel 206 is fixedly connected to the upper end of the rolling wheel shaft 211. Multiple tooth blocks 207 are fixedly connected to the surfaces of both the active rotating wheel 205 and the passive rotating wheel 206. The two sets of tooth blocks 207 mesh with each other.

[0024] The controller 201 is fixedly connected to the surface of the second arc support frame 102. The top of the controller 201 is electrically connected to a probe wire 217. The end of the probe wire 217 away from the controller 201 is electrically connected to an ultrasonic probe 213. The back of the controller 201 is fixedly connected to a second spring 216. The end of the second spring 216 away from the controller 201 is fixedly connected to a first support plate 215. The first support plate 215 is fixedly connected to the surface of the ultrasonic probe 213. Two second guide rods 214 are slidably inserted inside the first support plate 215. Both second guide rods 214 are fixedly connected to the back of the controller 201.

[0025] By adopting the above technical solution, when detecting corrosion on the piston rod, the first arc support frame 101 and the second arc support frame 102 are fitted onto the surface of the piston rod, and the first arc support frame 101 and the second arc support frame 102 are fixed together by bolts 103. Simultaneously, the piston rod is positioned between multiple rolling wheel shafts 211, and pressure is applied by the first spring 212 in a compressed state to push the rolling wheel shafts 211 tightly against the surface of the piston rod. Then, rotating the screw 208 pushes the corresponding rolling wheel shaft 211 tightly against the surface of the piston rod, thereby cooperating with the remaining... The multiple rolling roller shafts 211 allow the entire testing device to be mounted on the surface of the piston rod. When the piston rod needs to be tested, the first motor 203 can drive the active rotating wheel 205 and the passive rotating wheel 206 to rotate, thereby driving the corresponding rolling roller shafts 211 to roll on the surface of the piston rod. Since the rolling roller shafts 211 are inclined, when the rolling roller shafts 211 rotate, they can drive the entire device to gradually move upward in a spiral upward posture, thereby reducing omissions in the testing process and improving the uniformity of the trajectory in the testing process. The entire process can be powered by a storage battery.

[0026] During the movement of the equipment, the controller 201 and the ultrasonic probe 213 will also move. Since the second spring 216 is always in a compressed state, the second spring 216 can push the ultrasonic probe 213 to always be in close contact with the surface of the piston rod. The ultrasonic probe 213 can be used to detect the corrosion and prevent the ultrasonic probe 213 from detaching from the piston rod during the detection process, which would affect the detection results.

[0027] like Figures 6-8As shown, it also includes an anti-slip mechanism, which is disposed on the surface of the rolling wheel shaft 211. The anti-slip mechanism includes a first rotating shaft 304 fixedly connected to the lower axis of the plurality of rolling wheel shafts 211. A plurality of dispersing airflow pipes 307 are fixedly inserted inside the first rotating shaft 304. The first rotating shaft 304 is a hollow structure. The plurality of dispersing airflow pipes 307 are all connected to the interior of the first rotating shaft 304. An air cover 305 is fixedly connected to one end of the plurality of dispersing airflow pipes 307 that is away from each other. A plurality of partition plates 306 are fixedly connected inside the air cover 305. The plate 306 divides the interior of the air hood 305 into multiple independent spaces. Multiple dispersing airflow pipes 307 are respectively connected to the multiple independent spaces separated by the plate 306. Both the air hood 305 and the plate 306 are made of flexible rubber. A gathering airflow pipe 308 is rotatably inserted inside the first rotating shaft 304. The lower ends of the multiple gathering airflow pipes 308 are connected to the air delivery hose 301. An air pump 302 is fixedly connected to the surface of the second arc support frame 102. The air pump 302's suction port is connected to an air extraction pipe 303. The air extraction pipe 303 is connected to the air delivery hose 301.

[0028] By adopting the above technical solution, when the rolling wheel shaft 211 is in contact with the surface of the piston rod, the flexible rubber air cover 305 can be in contact with the surface of the piston rod, so that the independent space separated by the partition plate 306 covers the surface of the piston rod. The gathering airflow pipe 308 and the first rotating shaft 304 are rotatably connected through a rotary joint or a sealed bearing assembly. The rotary joint is provided with a sealing ring to maintain airtightness in the relative rotation state. At the same time, the air pump 302 draws out the air in the independent space separated by the partition plate 306, so that it is in a negative pressure state and adsorbed onto the surface of the piston rod. Because the suction force and air velocity generated by the air pump 302 are extremely large and it is in a state of continuous suction, an adsorption effect can be generated even when the independent spaces separated by multiple partitions 306 are all in an open state. This can reduce the occurrence of slippage during the movement of the rolling wheel shaft 211 and further reduce the impact on the piston rod detection results. During the rotation of the rolling wheel shaft 211 and the air cover 305, the adsorption force of the air cover 305 will be exceeded, so that the independent spaces separated by multiple partitions 306 will be adsorbed onto the piston rod surface in sequence, thereby maintaining a stable adsorption effect.

[0029] like Figure 9As shown, it also includes a cleaning mechanism, which is disposed on the surfaces of the first arc support frame 101 and the second arc support frame 102. The cleaning mechanism includes a plurality of second support plates 309 fixedly connected to the inner arc surfaces of the first arc support frame 101 and the second arc support frame 102. The upper and lower ends of the plurality of second support plates 309 are fixedly connected to third support plates 311. The surface of the third support plate 311 is rotatably connected to a second rotating shaft 313. The surface of the second rotating shaft 313 is fixedly connected to a stripping blade 310. The ultrasonic probe 213 is located between two stripping blades 310. An elastic sheet 312 is disposed between the stripping blade 310 and the third support plate 311. The two ends of the elastic sheet 312 are fixedly connected to the stripping blade 310 and the third support plate 311, respectively.

[0030] By adopting the above technical solution, the piston rod of the hydraulic gate hoist is usually very slender. In the operation of water conservancy dams, the gate does not rise and fall over a wide range every minute and second, but remains stationary at a certain fixed opening for a long time. Only a part of the piston rod is retracted inside the hydraulic cylinder and subjected to friction from the sealing ring, while the majority is exposed to the outside of the hydraulic cylinder for a long time. The anti-rust grease on the piston rod exposed to the air mixes with dust and oxidizes to form a hard shell, which affects the test results. Therefore, when the first arc support frame 101 and the second arc support frame 102 rotate and move spirally, the elastic sheet 312 in the state of compression deformation can push the blade 310 to always keep its blade edge in contact with the surface of the piston rod. Thus, while driving the blade 310 to move, the blade 310 can remove and peel off the hard shell of grease on the piston rod, thereby reducing the impact on the test results.

[0031] Instructions for use: Place the first arc support frame 101 and the second arc support frame 102 onto the surface of the piston rod, and fix them together with bolts 103 so that the piston rod is located between multiple rolling wheel shafts 211; The first spring 212, which is in a compressed state, pushes the rolling wheel shaft 211 to press against the surface of the piston rod. Then, the screw 208 is rotated to push the corresponding rolling wheel shaft 211 to press further against the piston rod, thus setting the entire detection device on the piston rod. The first motor 203 drives the active rotating wheel 205 and the passive rotating wheel 206 to rotate, which in turn drives the inclined rolling wheel shaft 211 to roll on the piston rod surface, so that the entire device gradually moves upward in a spiral upward posture, powered by the storage battery. During the movement of the equipment, the controller 201 and ultrasonic probe 213 are moved. The second spring 216, which is in a compressed state, pushes the ultrasonic probe 213 to always keep it in close contact with the piston rod surface to detect corrosion. The flexible rubber air cover 305 is in contact with the piston rod surface when the rolling wheel shaft 211 is in contact, and the independent space separated by the partition plate 306 covers the surface. The air pump 302 draws out air to form negative pressure adsorption. During rotation, multiple independent spaces sequentially adsorb, maintaining a stable adsorption effect; When the first arc support frame 101 and the second arc support frame 102 rotate and move in a spiral manner, the elastic sheet 312, which is in a state of pressure deformation, pushes the cutting edge of the peeling blade 310 to always adhere to the surface of the piston rod, thereby removing and peeling off the grease and hard shell on the piston rod.

[0032] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A corrosion detection device for piston rods of hydraulic gate hoists in water conservancy engineering, comprising a first arc support frame (101) and a second arc support frame (102), wherein the two ends of the first arc support frame (101) and the second arc support frame (102) abut against each other to form a ring structure, and one end of the first arc support frame (101) and the second arc support frame (102) abutting against each other is fixedly connected by bolts (103), characterized in that: It also includes an auxiliary moving mechanism, which is disposed on the surface of the first arc support frame (101) and the second arc support frame (102). The auxiliary moving mechanism includes multiple sets of first guide rods (209) inserted into the interior of the first arc support frame (101) and the second arc support frame (102). The multiple first guide rods (209) are arranged in pairs, and each set of first guide rods (209) has a connecting frame (202) fixedly connected to one end of each set of first guide rods (209) that is close to each other. The surface of the connecting frame (202) rotates. The device is dynamically connected to a roller shaft (211), and multiple roller shafts (211) are inclined in the same direction. Multiple sets of first guide rods (209) are fixedly connected to a support plate (210) at the end away from the connecting frame (202). A controller (201) is fixedly connected to the surface of the second arc support frame (102). A probe line (217) is electrically connected to the top of the controller (201), and an ultrasonic probe (213) is electrically connected to the end of the probe line (217) away from the controller (201). It also includes an anti-slip mechanism, which is disposed on the surface of the rolling wheel shaft (211). The anti-slip mechanism includes a first rotating shaft (304) fixedly connected to the lower axis of the multiple rolling wheel shafts (211). Multiple dispersing airflow pipes (307) are fixedly inserted inside the first rotating shaft (304). The first rotating shaft (304) is a hollow structure. The multiple dispersing airflow pipes (307) are all connected to the interior of the first rotating shaft (304). An air cover (305) is fixedly connected to one end of the multiple dispersing airflow pipes (307) that is far away from each other. Multiple partition plates (306) are fixedly connected inside the air cover (305). The multiple partition plates (306) divide the interior of the air cover (305) into multiple independent spaces. The multiple dispersing airflow pipes (307) are respectively connected to the multiple independent spaces separated by the partition plates (306). The air cover (305) and the partition plates (306) are both made of flexible rubber.

2. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering as described in claim 1, characterized in that: The rolling wheel shaft (211) is made of non-slip rubber. A screw (208) is rotatably connected to the surface of one of the connecting frames (202) on the surface of the first arc support frame (101). The screw (208) is rotatably inserted into the interior of the corresponding support plate (210). The screw (208) is threaded into the interior of the first arc support frame (101).

3. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering, as described in claim 2, is characterized in that: In addition to the connecting frame (202) connected to the screw (208), the surfaces of the multiple connecting frames (202) are fixedly connected with first springs (212), and the ends of the multiple first springs (212) away from the connecting frame (202) are respectively fixedly connected to the inner arc surfaces of the first arc support frame (101) and the second arc support frame (102).

4. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering as described in claim 3, characterized in that: A support frame (204) is fixedly connected to the surface of the support plate (210) connected to the screw (208). A first motor (203) is fixedly connected to the surface of the support frame (204). An active rotating wheel (205) is fixedly connected to the output shaft of the first motor (203). A passive rotating wheel (206) is fixedly connected to the upper end of the rolling wheel shaft (211). Multiple tooth blocks (207) are fixedly connected to the surfaces of both the active rotating wheel (205) and the passive rotating wheel (206). The two sets of tooth blocks (207) mesh with each other.

5. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering as described in claim 1, characterized in that: A second spring (216) is fixedly connected to the back of the controller (201). A first support plate (215) is fixedly connected to the end of the second spring (216) away from the controller (201). The first support plate (215) is fixedly connected to the surface of the ultrasonic probe (213). Two second guide rods (214) are slidably inserted inside the first support plate (215). Both second guide rods (214) are fixedly connected to the back of the controller (201).

6. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering as described in claim 1, characterized in that: The first rotating shaft (304) is rotatably inserted with a gathering airflow pipe (308), and the lower ends of the plurality of gathering airflow pipes (308) are connected to a gas delivery hose (301). The surface of the second arc support frame (102) is fixedly connected with an air pump (302), and the air inlet of the air pump (302) is connected to an air extraction pipe (303). The air extraction pipe (303) is connected to the gas delivery hose (301).

7. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering as described in claim 1, characterized in that: It also includes a cleaning mechanism, which is disposed on the surface of the first arc support frame (101) and the second arc support frame (102). The cleaning mechanism includes a plurality of second support plates (309) fixedly connected to the inner arc surface of the first arc support frame (101) and the second arc support frame (102). The upper and lower ends of the plurality of second support plates (309) are fixedly connected to third support plates (311). The surface of the third support plate (311) is rotatably connected to a second rotating shaft (313). The surface of the second rotating shaft (313) is fixedly connected to a stripping blade (310). The ultrasonic probe (213) is located between two stripping blades (310).

8. The corrosion detection equipment for piston rods of hydraulic gate hoists based on water conservancy engineering, as described in claim 7, is characterized in that: An elastic sheet (312) is provided between the stripping blade (310) and the third support plate (311), and the two ends of the elastic sheet (312) are fixedly connected to the stripping blade (310) and the third support plate (311) respectively.

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