Steel pipe anti-corrosion layer detection device

Abstract

The utility model relates to a steel pipe anticorrosive coating detection device which comprises a machine body, two leg rods are arranged on the bottom wall of the machine body, each leg rod is a hollow rod and comprises an upper section, an inclined section and a lower section, the distance between the two upper sections is small, the distance between the two lower sections is large, an opening is formed in the bottom end of each lower section, an installation cylinder is fixedly arranged at the bottom end of each lower section in a penetrating mode, and a core sleeve is arranged in each installation cylinder. Two swing arms are hinged to the bottom end of the core sleeve and are in a semi-barrel shape, the tail end of each swing arm is fixedly connected with a clamping sleeve, the clamping sleeves are in a semi-barrel shape, clamping channels are formed in the inner walls of the clamping sleeves, a ground inserting rod is clamped by the two clamping channels jointly, the upper end of the ground inserting rod penetrates into the core sleeve, the ground inserting rod is electrically connected with the machine body, and pushing and pressing semi-conical surfaces are arranged on the outer walls of the swing arms. And a pushing and pressing ring conical surface is arranged at the bottom end of the inner wall of the mounting cylinder, and the pushing and pressing ring conical surface is gradually narrowed from bottom to top. The ground inserting rod can be detached from the main body conveniently, so that sharpening is facilitated.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a steel pipe anti-corrosion layer detection device. Background Art

[0002] The steel pipe anti-corrosion layer detection device, also known as an A-frame, has two pins, which are inserted into the soil simultaneously, one in front of the other, along the direction of the steel pipe. The steel pipe anti-corrosion layer detection device is equipped with a left-hand indicator light and a right-hand indicator light. If the corrosion layer of the detected steel pipe is located on the left, the left-hand indicator light will flash when the two pins are inserted, and vice versa. By gradually moving according to the direction indicated by the indicator light and gradually reducing the moving distance, the position of the steel pipe anti-corrosion layer defect can be located. Because the pins need to be frequently inserted into the soil, the pins are easily worn or blunted. Once the pins are blunt, they need to be sharpened. However, the pins of the steel pipe anti-corrosion layer detection device in the prior art are fixed to the main body, making it inconvenient to sharpen them. Utility Model Content

[0003] The utility model aims to provide a steel pipe anti-corrosion layer detection device, the ground insertion rod of which is easy to be removed from the main body and thus easy to sharpen.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A steel pipe anti-corrosion layer detection device includes a body, a bottom wall of the body is provided with two leg rods, the leg rods are hollow rods, the leg rods include an upper section, an oblique section and a lower section, the two upper sections are relatively small in distance, the two lower sections are relatively large in distance, the bottom end of the lower section is provided with an opening, the bottom end of the lower section is fixedly penetrated with a mounting cylinder, a core sleeve is provided in the mounting cylinder, the bottom end of the core sleeve is hinged to two swing arms, the swing arms are semi-cylindrical, the end of each swing arm is fixedly connected to a jacket, the jacket is semi-cylindrical, the inner wall of the jacket is provided with a clamping channel, and the two clamping channels are clamped together with a plug The ground rod, the upper end of the ground rod is inserted into the core sleeve, the ground rod is electrically connected to the machine body, the outer wall of the swing arm is provided with a pushing semi-conical surface, the pushing semi-conical surface gradually narrows from bottom to top, the bottom end of the inner wall of the mounting tube is provided with a pushing ring cone surface, the pushing ring cone surface gradually narrows from bottom to top, the mounting tube is provided with an outer pin hole, the core sleeve is provided with an inner pin hole, the outer pin hole and the inner pin hole are positioned and fixed to each other by fixing pins, the top wall of the lower end of the oblique section is provided with an air avoidance hole, the air avoidance hole is used for the top end of the core sleeve to be exposed, a foot-operated cross bar is connected between the two lower sections, and a handle is provided on the top wall of the machine body.

[0006] Specifically, the mounting tube includes a lower tube section and an upper tube section. The bottom end of the inner wall of the lower tube section is provided with a pushing ring cone surface, and the bottom end of the upper tube section is provided with an annular step. The annular step is connected to the lower end opening of the lower section through a threaded connection.

[0007] Specifically, the outer pin hole is provided on the upper side of the upper barrel section.

[0008] Specifically, a protrusion is provided on the top side edge of the swing arm, a frustum is provided on the lower end of the core sleeve, two mounting notches are provided on the bottom side of the frustum, the protrusion is provided in the mounting notch, and the protrusion and the mounting notch are hinged by pins.

[0009] Specifically, a connecting edge is provided in the middle of the outer wall of the jacket, which divides the jacket into an upper clamping section and a lower clamping section. The outer wall of the upper clamping section cooperates with the inner wall of the swing arm, and the connecting edge is connected to the lower end edge of the swing arm by screws.

[0010] Specifically, a lower conical surface is provided on the outer wall of the bottom end of the lower clamping section.

[0011] Specifically, the angle between the oblique section and the lower section is 25°-40°.

[0012] Specifically, a screen, a left indicator light, a right indicator light and buttons are provided on the top wall of the machine body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Under the positioning action of the fixing pin, the conical surface of the pushing ring keeps pushing the two pushing semi-conical surfaces, so that the two clamping channels keep tightening the ground rod.

[0015] Frequent insertion of the ground rod into the soil inevitably leads to wear. When the lower end of the ground rod is worn, the installation tube can be unscrewed, and then the fixing pin can be removed. The core sleeve can then be moved downward relative to the installation tube, which can drive the two swing arms and the two clamping sleeves to move downward. This allows the pushing ring conical surface to no longer press the two pushing semi-conical surfaces, leaving space for the two swing arms (clamping sleeves) to expand relative to each other, allowing the previously clamped ground rod to be pulled out. The lower end of the ground rod can then be sharpened and reinstalled. The avoidance hole allows the top of the core sleeve to be exposed, and the length of the remaining section of the ground rod inside it can be observed through the top of the core sleeve to predict the timing of replacing the ground rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a view of a steel pipe anti-corrosion layer detection device;

[0018] Figure 2 A view of the body and related structures;

[0019] Figure 3 A view of the installation cylinder and related structures;

[0020] Figure 4An exploded view of the mounting barrel and related structures;

[0021] Figure 5 Exploded view of the mounting barrel and related structures.

[0022] In the picture:

[0023] 1. Body; 11. Handle; 12. Screen; 13. Left indicator light; 14. Right indicator light; 15. Buttons;

[0024] 21. Upper section; 22. Oblique section; 221. Avoidance hole; 23. Lower section; 231. Stepping on the horizontal bar;

[0025] 3. Mounting cylinder; 301. Lower cylinder section; 302. Upper cylinder section; 303. Annular step; 31. Pushing ring cone; 32. External pin hole; 33. Fixing pin;

[0026] 4. Core sleeve; 41. Internal pin hole; 42. Installation notch;

[0027] 5. Swing arm; 51. Push semi-conical surface; 52. Bump;

[0028] 6. Jacket; 61. Channel; 62. Connecting edge;

[0029] 7. Insert the pole into the ground. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See Figures 1 to 5 A steel pipe anti-corrosion layer detection device includes a body 1. The bottom wall of the body 1 is provided with two hollow legs. The legs include an upper section 21, an inclined section 22, and a lower section 23. The distance between the two upper sections 21 is small, and the distance between the two lower sections 23 is large.

[0032] The bottom end of the lower section 23 is provided with an opening. The bottom end of the lower section 23 is fixedly penetrated with a mounting tube 3, a core sleeve 4 is provided in the mounting tube 3, and the bottom end of the core sleeve 4 is hinged with two swing arms 5 (see Figure 4 、 Figure 5 The swing arm 5 is semi-cylindrical, and each end of the swing arm 5 is fixedly connected to a jacket 6. The jacket 6 is semi-cylindrical, and the inner wall of the jacket 6 is provided with a clamping channel 61. The two clamping channels 61 together clamp a ground rod 7. The upper end of the ground rod 7 penetrates the core sleeve 4, and the ground rod 7 is electrically connected to the body 1.

[0033] The outer wall of the swing arm 5 is provided with a pushing semi-conical surface 51, which gradually narrows from bottom to top. The bottom end of the inner wall of the mounting tube 3 is provided with a pushing ring conical surface 31 (see Figure 4 ), the pushing ring conical surface 31 gradually narrows from bottom to top. The mounting tube 3 is provided with an outer pin hole 32 (see Figure 3 ), the core sleeve 4 is provided with an inner pin hole 41 (see Figure 4 ), the outer pin hole 32 and the inner pin hole 41 are positioned and fixed to each other by the fixing pin 33.

[0034] The top wall of the lower end of the oblique section 22 is provided with a clearance hole 221, and the top of the core sleeve 4 is exposed through the clearance hole 221. A foot-operated cross bar 231 is connected between the two lower sections 23. A handle 11 is provided on the top wall of the machine body 1.

[0035] Specifically, see Figure 3 The mounting tube 3 includes a lower tube section 301 and an upper tube section 302. The bottom end of the inner wall of the lower tube section 301 is provided with a pushing ring cone surface 31. The bottom end of the upper tube section 302 is provided with an annular step 303, which is connected to the lower end opening of the lower section 23 by a thread.

[0036] Specifically, the outer pin hole 32 is provided on the upper side of the upper barrel section 302 .

[0037] Specifically, see Figure 5 The top edge of the swing arm 5 is provided with a protrusion 52. The lower end of the core sleeve 4 is provided with a frustum, and the bottom side of the frustum is provided with two mounting notches 42. The protrusion 52 is provided in the mounting notch 42, and the protrusion 52 and the mounting notch 42 are hinged by a pin.

[0038] Specifically, a connecting edge 62 is provided in the middle of the outer wall of the jacket 6, which divides the jacket 6 into an upper clamping section and a lower clamping section. The outer wall of the upper clamping section mates with the inner wall of the swing arm 5. The connecting edge 62 is connected to the lower end edge of the swing arm 5 by screws.

[0039] Specifically, a lower conical surface is provided on the outer wall of the bottom end of the lower clamping section.

[0040] Specifically, the angle between the oblique section 22 and the lower section 23 is 25°-40°.

[0041] Specifically, a screen 12 , a left indicator light 13 , a right indicator light 14 and buttons 15 are provided on the top wall of the body 1 .

[0042] The working principle of this utility model is as follows:

[0043] The steel pipe anti-corrosion layer detection device is also called an A-frame, and its detection principle is the existing technology. Hold the steel pipe anti-corrosion layer detection device above the ground on the upper side of the buried pipeline, adjust the body 1 so that its length direction is consistent with the length direction of the buried pipeline, insert the two ground-inserted rods 7 into the ground, and step on the cross bar 231 with your feet to make the ground-inserted rods 7 inserted deeper, making the monitoring more accurate. The ground-inserted rods 7 are electrically connected to the body 1, and the two ground-inserted rods 7 are used to jointly sense the position of the steel pipe anti-corrosion layer defect. If the steel pipe anti-corrosion layer defect position is located on the right side of the body 1 at this time, the right-hand indicator light 14 will flash, and vice versa. According to the indications of the left-hand indicator light 13 and the right-hand indicator light 14, the steel pipe anti-corrosion layer detection device is translated along the length direction of the buried pipeline until it moves back and forth a short distance to the left and right. When the left-hand indicator light 13 and the right-hand indicator light 14 light up alternately, it indicates that the steel pipe anti-corrosion layer defect position is exactly between the two ground-inserted rods 7, thereby locating the steel pipe anti-corrosion layer defect position.

[0044] Under the positioning effect of the fixing pin 33 , the pushing ring conical surface 31 keeps pushing the two pushing semi-conical surfaces 51 , so that the two clamping channels 61 keep tightening the ground rod 7 .

[0045] The ground rod 7 is frequently inserted into the soil, and it is inevitable that it will wear out. When the lower end of the ground rod 7 is worn, the installation tube 3 can be screwed out, and then the fixing pin 33 can be removed, and the core sleeve 4 can be moved downward relative to the installation tube 3, which can drive the two swing arms 5 and the two clamping sleeves 6 to move downward, so that the pushing ring cone 31 does not press the two pushing semi-conical surfaces 51, so that the two swing arms 5 (clamping sleeves 6) have space to expand with each other, so that the originally clamped ground rod 7 can be pulled out, and then the lower end of the ground rod 7 is sharpened, and then the sharpened ground rod 7 is reinstalled. The ground rod 7 is sharpened after being pulled out, and the sharpening process is more convenient. The airtight hole 221 allows the top of the core sleeve 4 to be exposed, and the length of the remaining section of the ground rod 7 inside it can be observed through the top of the core sleeve 4, so as to predict the timing of replacing the ground rod 7.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A steel pipe anti-corrosion layer detection device, characterized by: The machine body comprises a machine body, the bottom wall of the machine body is provided with two leg rods, the leg rods are hollow rods, the leg rods include an upper section, an oblique section and a lower section, the spacing between the two upper sections is small, the spacing between the two lower sections is large, the bottom end of the lower section is provided with an opening, the bottom end of the lower section is fixedly penetrated with a mounting cylinder, a core sleeve is provided in the mounting cylinder, the bottom end of the core sleeve is hinged with two swing arms, the swing arms are semi-cylindrical, the end of each swing arm is fixedly connected with a jacket, the jacket is semi-cylindrical, the inner wall of the jacket is provided with a clamping channel, the two clamping channels are jointly clamped with a ground rod, the ground rod The upper end of the core sleeve is inserted into the ground rod and electrically connected to the machine body. A pushing semi-conical surface is provided on the outer wall of the swing arm, and the pushing semi-conical surface gradually narrows from bottom to top. A pushing ring conical surface is provided on the bottom end of the inner wall of the mounting tube, and the pushing ring conical surface gradually narrows from bottom to top. The mounting tube is provided with an outer pin hole, and the core sleeve is provided with an inner pin hole. The outer pin hole and the inner pin hole are positioned and fixed to each other by fixing pins. An avoidance hole is provided on the top wall of the lower end of the oblique section, and the avoidance hole is used for the top end of the core sleeve to be exposed. A foot-operated cross bar is connected between the two lower sections, and a handle is provided on the top wall of the machine body.

2. The steel pipe anti-corrosion layer detection device according to claim 1 is characterized in that: The mounting tube includes a lower tube section and an upper tube section. The bottom end of the inner wall of the lower tube section is provided with a pushing ring cone surface, and the bottom end of the upper tube section is provided with an annular step. The annular step is connected to the lower end opening of the lower section through a threaded connection.

3. The steel pipe anti-corrosion layer detection device according to claim 2 is characterized in that: The outer pin hole is arranged on the upper side of the upper barrel section.

4. The steel pipe anti-corrosion layer detection device according to claim 1 is characterized in that: The top edge of the swing arm is provided with a convex block, the lower end of the core sleeve is provided with a round table, the bottom side of the round table is provided with two mounting notches, the convex block is arranged in the mounting notches, and the convex block and the mounting notches are hinged by pins.

5. The steel pipe anti-corrosion layer detection device according to claim 4 is characterized in that: A connecting edge is provided in the middle of the outer wall of the jacket, which divides the jacket into an upper clamping section and a lower clamping section. The outer wall of the upper clamping section cooperates with the inner wall of the swing arm, and the connecting edge is connected to the lower end edge of the swing arm by screws.

6. The steel pipe anti-corrosion layer detection device according to claim 4 is characterized in that: The outer wall of the bottom end of the lower clamping section is provided with a lower conical surface.

7. The steel pipe anti-corrosion layer detection device according to claim 1 is characterized in that: The angle between the oblique section and the lower section is 25°-40°.

8. The steel pipe anti-corrosion layer detection device according to claim 1 is characterized in that: The top wall of the machine body is provided with a screen, a left indicator light, a right indicator light and buttons.

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