A test device for soil-steel electrochemical corrosion system

Abstract

The present invention relates to a testing device, and in particular to a testing device for a soil-steel electrochemical corrosion system. The present invention provides a testing device for a soil-steel electrochemical corrosion system that can prevent soil and test pieces from being affected by the outside world, can change the corrosive medium of the soil, and thus speed up the experiment. The present invention provides such a testing device for a soil-steel electrochemical corrosion system, comprising a fixed frame, a first fixed frame, a first support frame, a sliding rod, a detection instrument, etc.; the upper side of the fixed frame is connected to the first fixed frame, the left and right sides of the fixed frame are connected to the first support frame, and the middle part of the first support frame is slidably provided with a sliding rod. Close the cover plate, and the soil and the test piece are protected by the cover plate to prevent the soil and the test piece from being affected by the outside world. The liquid in the second fixed frame will flow into the soil in the first fixed frame, thereby changing the corrosive medium in the soil, thereby speeding up the experiment.

Description

Technical Field

[0001] The invention relates to a testing device, in particular to a testing device for a soil-steel electrochemical corrosion system. Background Art

[0002] Buried pipelines will inevitably be corroded due to external factors such as soil environment, which also brings considerable economic losses. In order to avoid excessive economic losses, it is necessary to test the corrosion degree in the soil before burying the pipeline. First, it is necessary to pre-bury standard test pieces in the test soil, and then dig according to a certain burial cycle. The test results are calculated by the corrosion weight loss rate and corrosion rate of the test pieces. During the test, the corrosion experiment can also be accelerated by artificially controlling the test conditions. At present, test devices are generally used to test the soil. During the use of existing test devices, the soil and test pieces are easily affected by the outside world, and the normal corrosion rate is relatively slow, so the test speed cannot be accelerated during the test.

[0003] In view of the shortcomings of the above-mentioned prior art, a test device for the soil-steel electrochemical corrosion system is designed to overcome the shortcomings of the prior art and to prevent the soil and the test piece from being affected by the outside world, to change the corrosive medium of the soil, and thus to speed up the experiment. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art that the soil and the test piece are easily affected by the outside world and the normal corrosion speed is relatively slow, and the experimental speed cannot be accelerated during testing, the technical problem to be solved by the present invention is to provide a test device for the soil-steel electrochemical corrosion system which can prevent the soil and the test piece from being affected by the outside world, can change the corrosive medium of the soil, and thus speed up the experimental speed.

[0005] In order to solve the above technical problems, the present invention provides a test device for a soil-steel electrochemical corrosion system, comprising a fixed frame, a first fixed frame, a first support frame, a sliding rod, a detection instrument, a display screen, a first handrail, a sealing mechanism, a water adding mechanism and a temperature mechanism, wherein the upper side of the fixed frame is connected with the first fixed frame, and both the front and rear sides of the upper part of the first fixed frame are provided with lead-out holes for leading out electrode wires, the first support frame is connected between the left and right sides of the fixed frame, a sliding rod is slidably provided in the middle of the first support frame, a detection instrument for detecting soil corrosion is connected to the lower end of the sliding rod, a display screen for displaying soil corrosion in cooperation with the detection instrument is connected to the upper end of the sliding rod, a first handrail is connected between the left and right sides of the display screen, a sealing mechanism for protecting soil is provided on the first fixed frame, a water adding mechanism for performing corrosion acceleration experiments is provided on the fixed frame, and a temperature mechanism for adjusting soil temperature is provided on the fixed frame and the first fixed frame;

[0006] The closing mechanism includes a bearing seat, a cover plate, a first contact rod, an elastic member, a space cam and a slider. The upper left portion of the fixed frame is connected to the bearing seat. Two space cams symmetrically arranged in a front-to-back manner are rotatably provided on the upper side of the bearing seat. The lower portion of the space cam is connected to a cover plate for covering the fixed frame. The cover plate is in contact with the fixed frame. Seven air holes are evenly spaced on the cover plate. The lower portion of the sliding rod is slidably provided with a first contact rod. An elastic member is connected between the first contact rod and the detection instrument. The elastic member is an iron spring. The lower left portion of the first contact rod is connected to two sliders symmetrically arranged in a front-to-back manner. The front and rear sliders are respectively slidably matched with the front and rear space cams.

[0007] The water adding mechanism comprises a first connecting rod, a second fixing frame, a plug, a sieve plate and a second contact rod, the upper side of the fixing frame is connected to two second fixing frames which are arranged symmetrically in front and back and are connected to the first fixing frame, the upper right part of the second fixing frame is clamped with a plug, the lower part of the second fixing frame is slidably provided with a sieve plate, the left side of the sieve plate is connected to a second contact rod made of rubber material, and the upper left part of the first contact rod is connected to a first connecting rod for squeezing the second contact rod;

[0008] The temperature mechanism includes a heat conducting plate, a first fixed block and a heater. The heat conducting plate is connected to the outer side of the first fixed frame. Four first fixed blocks are evenly connected to the upper side of the fixed frame. A heater for heating the heat conducting plate is installed on the upper part of the first fixed block, and the heater is in contact with the heat conducting plate.

[0009] Preferably, a limiting mechanism for limiting the position of the pipeline is also included, the limiting mechanism includes a second support frame and a limiting block, the second support frame is connected to the inner side of the first fixed frame, and five limiting blocks for clamping the pipeline are evenly connected to the inner side of the second support frame.

[0010] Preferably, it also includes a scraping mechanism for cleaning soil attached to the detection instrument, the scraping mechanism includes a third support frame and a wiping frame, the inner top side of the first support frame is connected to two third support frames arranged in a left-right symmetrical manner, and a wiping frame for cleaning the detection instrument is connected between the lower parts of the two third support frames, and the detection instrument surrounds the wiping frame and is in contact with the wiping frame.

[0011] Preferably, it also includes a collecting mechanism for collecting soil, the collecting mechanism includes a baffle, a second fixed block, a second connecting rod, a collecting frame and a second armrest, the front lower side of the fixed frame is connected to two second fixed blocks which are symmetrically arranged on the left and right, the upper part of the second fixed block is slidably provided with a second connecting rod, a baffle which slidably cooperates with the second fixed block and is used to block the fixed frame is connected between the rear sides of the two second connecting rods, the interior of the fixed frame is slidably provided with a collecting frame for collecting soil, and the front and rear sides of the collecting frame are connected to second armrests.

[0012] Preferably, a handle is further included, and a handle made of rubber material is connected between the front sides of the two second connecting rods.

[0013] On the basis of overcoming the shortcomings of the prior art, the present invention can also achieve the following beneficial effects:

[0014] 1. Close the cover to protect the soil and the specimen from external influences. The liquid in the second fixed frame will flow into the soil in the first fixed frame, thereby changing the corrosive medium in the soil and speeding up the experiment.

[0015] 2. The standard specimen is supported by the limit block to prevent the standard specimen from shifting or sinking into the lower part of the soil. It also makes it convenient for the operator to find the standard specimen accurately and quickly and remove it from the soil.

[0016] 3. The soil in the first fixed frame is heated by the heater and the heat conducting plate to adjust the temperature of the experimental soil, thereby diversifying the effect of the experiment.

[0017] 4. The soil attached to the surface of the testing instrument will be squeezed out by the wiping rack to clean the testing instrument and prevent the soil from corroding the testing instrument.

[0018] 5. The soil is supported by the baffle, so that the operator does not need to bury the fixing frame completely in the soil, making the use of the device more convenient and facilitating the operation of the operator. The collection frame allows the operator to easily collect and process the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the sealing mechanism of the present invention.

[0021] Figure 3 It is a partial three-dimensional structural schematic diagram of the closing mechanism of the present invention.

[0022] Figure 4 It is a partial enlarged view of point A of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the water adding mechanism of the present invention.

[0024] Figure 6 It is a partial three-dimensional structural schematic diagram of the water adding mechanism of the present invention.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the limiting mechanism, the temperature mechanism and the scraping mechanism of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the limiting mechanism and the temperature mechanism of the present invention.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the collecting mechanism of the present invention.

[0028] Fig.10 It is a schematic diagram of a first partial three-dimensional structure of the collecting mechanism of the present invention.

[0029] Fig.11 It is a schematic diagram of the second partial three-dimensional structure of the collecting mechanism of the present invention.

[0030] The markings in the accompanying drawings are: 1-fixed frame, 2-first fixed frame, 21-lead hole, 3-first support frame, 4-sliding rod, 5-detection instrument, 6-display screen, 7-first handrail, 8-closing mechanism, 81-bearing seat, 82-cover plate, 83-air vent, 84-first contact rod, 85-elastic member, 86-space cam, 87-sliding block, 9-water adding mechanism, 91-first connecting rod, 92-second fixed frame, 93-stopper, 94-sieve Plate, 95-second contact rod, 10-limiting mechanism, 101-second supporting frame, 102-limiting block, 11-temperature mechanism, 111-heat conducting plate, 112-first fixed block, 113-heater, 12-scraping mechanism, 121-third supporting frame, 122-wiping frame, 13-collecting mechanism, 131-baffle, 132-second fixed block, 133-second connecting rod, 135-collecting frame, 136-second armrest, 134-handle. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1

[0033] A test device for a soil-steel electrochemical corrosion system, such as Figure 1 As shown, it includes a fixed frame 1, a first fixed frame 2, a first support frame 3, a sliding rod 4, a detection instrument 5, a display screen 6, a first handrail 7, a closing mechanism 8 and a water adding mechanism 9. The upper side of the fixed frame 1 is connected with the first fixed frame 2, and the upper front and rear sides of the first fixed frame 2 are provided with lead-out holes 21 for leading out electrode wires. The first support frame 3 is bolted between the left and right sides of the fixed frame 1. The middle part of the first support frame 3 is slidably provided with a sliding rod 4. The lower end of the sliding rod 4 is connected to a detection instrument 5 for detecting soil corrosion by screw connection. The upper end of the sliding rod 4 is connected with a display screen 6 for cooperating with the detection instrument 5 to display the soil corrosion degree. The first handrail 7 is connected between the left and right sides of the display screen 6. The first fixed frame 2 is provided with a closing mechanism 8 for protecting the soil, and the fixed frame 1 is provided with a water adding mechanism 9 for performing corrosion acceleration experiments.

[0034] like Figure 2-4 As shown, the closing mechanism 8 includes a bearing seat 81, a cover plate 82, a first contact rod 84, an elastic member 85, a space cam 86 and a slider 87. The bearing seat 81 is bolted to the upper left portion of the fixed frame 1. Two space cams 86 symmetrically arranged in a front-to-back manner are rotatably provided on the upper side of the bearing seat 81. A cover plate 82 for covering the fixed frame 1 is bolted to the lower portion of the space cam 86. The cover plate 82 is in contact with the fixed frame 1. Seven air holes 83 are evenly spaced on the cover plate 82. The first contact rod 84 is slidably provided at the lower portion of the sliding rod 4. An elastic member 85 is connected between the first contact rod 84 and the detection instrument 5. The elastic member 85 is an iron spring. Two sliders 87 symmetrically arranged in a front-to-back manner are welded to the lower left portion of the first contact rod 84. The front and rear sliders 87 are respectively slidably matched with the front and rear space cams 86.

[0035] like Figure 5 and Figure 6 As shown, the water adding mechanism 9 includes a first connecting rod 91, a second fixed frame 92, a plug 93, a sieve plate 94 and a second contact rod 95. Two second fixed frames 92 which are arranged symmetrically in front and back and connected to the first fixed frame 2 are bolted to the upper side of the fixed frame 1. The plug 93 is clamped on the upper right part of the second fixed frame 92. The sieve plate 94 is slidably provided on the lower part of the second fixed frame 92. The second contact rod 95 made of rubber is bolted to the left side of the sieve plate 94. The first connecting rod 91 for squeezing the second contact rod 95 is welded to the upper left part of the first contact rod 84.

[0036] Initially, the cover 82 is in a closed state. When the operator needs to use the device to perform a test operation on the soil-steel electrochemical corrosion system, first, the operator completely buries the fixing frame 1 in the soil, and then drives the display screen 6 to move downward through the first armrest 7. The display screen 6 will drive the detection instrument 5 to move downward through the sliding rod 4. The detection instrument 5 will drive the first contact rod 84 to move downward through the elastic member 85. The first contact rod 84 will drive the slider 87 to move downward. The slider 87 will squeeze the space cam 86 to rotate during the downward movement. The space cam 86 will drive the cover 82 to rotate, thereby opening the cover 82. When the slider 87 moves downward to the limit, the first contact rod 84 can no longer move downward, and the operator will then Pour the soil into the first fixed frame 2, bury the standard test piece into the soil in the first fixed frame 2, lead out the electrode wire through the lead-out hole 21, and then continue to pull the first handrail 7 downward, the detection instrument 5 continues to move downward to move into the first fixed frame 2, the elastic member 85 is stretched, and when the detection instrument 5 moves downward to contact the soil in the first fixed frame 2, the detection instrument 5 will detect the corrosion degree of the soil, and the display screen 6 will display the corrosion degree detected by the detection instrument 5. At this time, the operator records the displayed value in the first experiment, and then the operator drives the display screen 6 upward through the first handrail 7, and the display screen 6 drives the detection instrument 5 upward through the sliding rod 4 to move away from the detected soil, and the elastic member 85 is reset, and the detection The upward movement of the instrument 5 will drive the first contact rod 84 to move upward through the elastic member 85, and the first contact rod 84 will drive the slider 87 to move upward to squeeze the space cam 86 to rotate in the opposite direction, and the squeezing space cam 86 will drive the cover plate 82 to rotate, thereby closing the cover plate 82, and then ensure air circulation through the air vent 83, so as to carry out the first soil test experiment, that is, the pre-buried standard specimen is corroded for a certain period of time by the corrosive medium in the soil, and the test result of the experiment is obtained according to the degree of corrosion of the standard specimen. After the first experimental time is up, the operator removes the plug 93 from the second fixed frame 92. After the plug 93 is removed, the operator adds salt water or a liquid required to be used in the experiment to intervene in the experimental process. In the second fixed frame 92, the sieve plate 94 initially blocks the second fixed frame 92. After the liquid is added, the operator snaps the plug 93 back onto the second fixed frame 92, and then opens the cover plate 82 according to the above operation, and takes the standard specimen out of the soil to perform a test on the standard specimen. At the same time, the operator records the test value of the standard specimen in the first experiment, and then the operator buries the new standard specimen into the soil in the first fixed frame 2. In the process of the operator opening the cover plate 82, the first contact rod 84 moves downward and also drives the first connecting rod 91 to move downward. In the process of moving downward, the first connecting rod 91 squeezes the second contact rod 95 to deform. The first connecting rod 91 continues to move downward to release the second contact rod 95.The second contact rod 95 then recovers its shape and blocks the top of the first connecting rod 91, and then the operator closes the cover plate 82. The first contact rod 84 will drive the first connecting rod 91 to move upward when moving upward. During the upward movement of the first connecting rod 91, the sieve plate 94 will be pulled upward by the second contact rod 95 and will no longer block the second fixed frame 92. The liquid in the second fixed frame 92 will then flow into the soil in the first fixed frame 2, thereby changing the corrosive medium in the soil, so as to conduct a control experiment. After the sieve plate 94 moves upward to the limit, the first connecting rod 91 continues to move upward to release the second contact rod 95, and the sieve plate 94 then moves downward under the action of its own gravity to reset and block the second fixed frame 92 again. Then After the second experiment time (equal to the time of the first experiment) is up, the operator takes out the second standard specimen from the soil, and detects the second standard specimen according to the above operations on the standard specimen, and records the detection value of the second standard specimen in the second experiment, and at the same time moves the detection instrument 5 downward again to detect the soil with the added liquid, and the operator records the value displayed on the display screen 6 at this time in the second experiment, repeats the above operations, and conducts the third or more experiments, and finally compares or analyzes the experimental values, and completes the test operation of the soil-steel electrochemical corrosion system according to the comparison or analysis results. After the test operation is completed, the operator takes the device out of the soil.

[0037] Example 2

[0038] On the basis of Example 1, Figure 1 and Figure 8 As shown, it also includes a limiting mechanism 10 for limiting the position of the pipeline. The limiting mechanism 10 includes a second support frame 101 and a limiting block 102. The second support frame 101 is bolted to the inner side of the first fixed frame 2, and five limiting blocks 102 for clamping the pipeline are bolted to the inner side of the second support frame 101 at even intervals.

[0039] When the operator buries the standard specimen into the soil in the first fixed frame 2, the operator places the standard specimen on the limit block 102 and supports the standard specimen through the limit block 102 to prevent the standard specimen from shifting or sinking into the lower part of the soil. At the same time, it also facilitates the operator to find the standard specimen accurately and quickly and remove it from the soil.

[0040] Example 3

[0041] On the basis of Example 2, Figure 1 and Figure 8As shown, a temperature mechanism 11 for adjusting the soil temperature is also included. The temperature mechanism 11 includes a heat conducting plate 111, a first fixed block 112 and a heater 113. The heat conducting plate 111 is bolted to the outside of the first fixed frame 2. Four first fixed blocks 112 are evenly connected to the upper side of the fixed frame 1. A heater 113 for heating the heat conducting plate 111 is installed on the upper part of the first fixed block 112 by screw connection. The heater 113 is in contact with the heat conducting plate 111.

[0042] The operator starts the heater 113 , and the heater 113 heats the soil in the first fixing frame 2 through the heat conducting plate 111 , so as to adjust the temperature of the experiment, thereby diversifying the effect of the experiment. After the heating operation is completed, the operator can turn off the heater 113 .

[0043] Example 4

[0044] On the basis of Example 3, Figure 1 and Figure 7 As shown, it also includes a scraping mechanism 12 for cleaning the soil attached to the detection instrument 5, and the scraping mechanism 12 includes a third support frame 121 and a wiping frame 122. Two third support frames 121 arranged in a left-right symmetrical manner are bolted to the inner top side of the first support frame 3, and a wiping frame 122 for cleaning the detection instrument 5 is welded between the lower parts of the two third support frames 121. The detection instrument 5 surrounds the wiping frame 122 and is in contact with the wiping frame 122.

[0045] Initially, the detection instrument 5 is located in the wiping frame 122. When the detection instrument 5 moves downward to detect the soil, it will separate from the wiping frame 122. Then, when the detection instrument 5 moves upward to reset after detecting the soil, it will contact the wiping frame 122. The wiping frame 122 will squeeze out the soil attached to the surface of the detection instrument 5, thereby cleaning the detection instrument 5 and preventing the soil from corroding the detection instrument 5.

[0046] Example 5

[0047] On the basis of Example 4, Figure 1 , Fig. 9 and Fig.10As shown, it also includes a collecting mechanism 13 for collecting soil, and the collecting mechanism 13 includes a baffle 131, a second fixed block 132, a second connecting rod 133, a collecting frame 135 and a second handrail 136. Two second fixed blocks 132 arranged in a left-right symmetrical manner are bolted to the front lower side of the fixed frame 1, and the second connecting rod 133 is slidably provided on the upper part of the second fixed block 132. A baffle 131 that slidably cooperates with the second fixed block 132 and is used to block the fixed frame 1 is welded between the rear sides of the two second connecting rods 133. A collecting frame 135 for collecting soil is slidably provided inside the fixed frame 1, and the second handrail 136 is bolted to the front and rear sides of the collecting frame 135.

[0048] like Fig.11 As shown, a handle 134 is also included. The handle 134 made of rubber material is bolted between the front sides of the two second connecting rods 133.

[0049] Initially, the baffle 131 blocks the fixing frame 1, and the operator directly pours the soil into the first fixing frame 2, and the soil is supported by the baffle 131, so that the operator does not need to bury the fixing frame 1 completely in the soil, making the use method of the device more convenient and facilitating the operation of the operator. After completing the soil detection operation, the operator pulls the handle 134 forward, and the handle 134 drives the baffle 131 to move forward through the second connecting rod 133. The baffle 131 will no longer block the fixing frame 1 in the process of moving forward. The soil in the first fixed frame 2 will then fall into the collecting frame 135, so that the soil is collected by the collecting frame 135. The operator then pushes the handle 134 backward to move the baffle 131 backward and resets it, and drives the collecting frame 135 forward through the second armrest 136 to move the collecting frame 135 out of the fixed frame 1, so that the operator can conveniently process the soil in the collecting frame 135, and then drives the collecting frame 135 backward through the second armrest 136 to fold the collecting frame 135.

[0050] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A test device for a soil-steel electrochemical corrosion system, comprising a fixed frame (1), a first fixed frame (2), a first support frame (3), a sliding rod (4), a detection instrument (5), a display screen (6) and a first handrail (7), wherein the upper side of the fixed frame (1) is connected to the first fixed frame (2), the upper front and rear sides of the first fixed frame (2) are provided with lead-out holes (21) for leading out electrode wires, the first support frame (3) is connected between the left and right sides of the fixed frame (1), a sliding rod (4) is slidably provided in the middle of the first support frame (3), the lower end of the sliding rod (4) is connected to the detection instrument (5), the upper end of the sliding rod (4) is connected to the display screen (6), and the first handrail (7) is connected between the left and right sides of the display screen (6), characterized in that: It also includes a sealing mechanism (8), a water adding mechanism (9) and a temperature mechanism (11), wherein the sealing mechanism (8) is arranged on the first fixed frame (2), the water adding mechanism (9) is arranged on the fixed frame (1), and the temperature mechanism (11) is arranged on the fixed frame (1) and the first fixed frame (2); The sealing mechanism (8) comprises a bearing seat (81), a cover plate (82), a first contact rod (84), an elastic member (85), a space cam (86) and a slider (87); the upper left portion of the fixed frame (1) is connected to the bearing seat (81); the upper side of the bearing seat (81) is rotatably provided with two space cams (86) arranged in a front-to-back symmetrical manner; the lower portion of the space cam (86) is connected to the cover plate (82); the cover plate (82) is provided with an air vent (83); the lower portion of the sliding rod (4) is slidably provided with a first contact rod (84); the first contact rod (84) and the detection instrument (5) are connected with an elastic member (85); the lower left portion of the first contact rod (84) is connected to two sliders (87) arranged in a front-to-back symmetrical manner; the slider (87) and the space cam (86) are slidably engaged; The water adding mechanism (9) comprises a first connecting rod (91), a second fixing frame (92), a plug (93), a screen plate (94) and a second contact rod (95); the upper side of the fixing frame (1) is connected to two second fixing frames (92) which are arranged in a front-to-back symmetrical manner and are connected to the first fixing frame (2); the plug (93) is clamped on the upper right part of the second fixing frame (92); the screen plate (94) is slidably provided on the lower part of the second fixing frame (92); the left side of the screen plate (94) is connected to a second contact rod (95) made of a rubber material; the upper left part of the first contact rod (84) is connected to a first connecting rod (91) for pressing the second contact rod (95); The temperature mechanism (11) comprises a heat conducting plate (111), a first fixing block (112) and a heater (113); the heat conducting plate (111) is connected to the outer side of the first fixing frame (2); four first fixing blocks (112) are evenly spaced and connected to the upper side of the fixing frame (1); a heater (113) is installed on the upper part of the first fixing block (112); and the heater (113) is in contact with the heat conducting plate (111).

2. A soil-steel electrochemical corrosion system testing device according to claim 1, characterized in that: It also comprises a limiting mechanism (10), the limiting mechanism (10) comprising a second support frame (101) and a limiting block (102), the inner side of the first fixed frame (2) is connected to the second support frame (101), and the inner side of the second support frame (101) is connected to the limiting block (102).

3. A soil-steel electrochemical corrosion system testing device according to claim 2, characterized in that: It also includes a scraping mechanism (12), the scraping mechanism (12) including a third support frame (121) and a wiping frame (122), the inner top side of the first support frame (3) is connected to two third support frames (121) arranged in a left-right symmetrical manner, the lower parts of the two third support frames (121) are connected to a wiping frame (122) for cleaning the detection instrument (5), and the detection instrument (5) surrounds the wiping frame (122) and is in contact with the wiping frame (122).

4. A soil-steel electrochemical corrosion system testing device according to claim 3, characterized in that: The invention also comprises a collecting mechanism (13), the collecting mechanism (13) comprising a baffle (131), a second fixing block (132), a second connecting rod (133), a collecting frame (135) and a second handrail (136); two second fixing blocks (132) arranged in a left-right symmetrical manner are connected to the front lower side of the fixing frame (1); the second connecting rod (133) is slidably provided on the upper part of the second fixing block (132); a baffle (131) slidably matched with the second fixing block (132) is connected between the rear sides of the two second connecting rods (133); a collecting frame (135) for collecting soil is slidably provided inside the fixing frame (1); and the front and rear sides of the collecting frame (135) are both connected to the second handrail (136).

5. A soil-steel electrochemical corrosion system testing device according to claim 4, characterized in that: It also includes a handle (134), and the handle (134) is connected between the front sides of the two second connecting rods (133).

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