Eddy current flaw detection device for pipes

Abstract

The utility model discloses an eddy current flaw detection device for pipes. The eddy current flaw detection device comprises a clamping mechanism, and a first driving motor and an air cylinder which are arranged on one side of the clamping mechanism, a moving mechanism, a second driving motor and an electric telescopic rod are arranged below the clamping mechanism, and the second driving motor and the electric telescopic rod are installed on one side of the moving mechanism. The clamping mechanism comprises a fixing column, one side of the fixing column is fixedly connected with a fixing frame, and the side, close to the fixing frame, of the fixing column is fixedly connected with a first driving motor; wherein the output end of the first driving motor penetrates through the fixing frame and is fixedly connected with a worm, one end of the worm is rotationally connected with the fixing frame, and one side of the worm is connected with a worm gear in an engaged mode; by arranging the clamping mechanism, a casting can be clamped, meanwhile, the casting can be turned over, different positions of the casting can be detected, and by arranging the moving mechanism, the casting can be driven to move, and eddy current flaw detection can be conducted on the different positions of the casting.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe detection, in particular to an eddy current flaw detection device for pipes. Background Technique

[0002] Eddy current testing is to bring a conductor close to a coil carrying alternating current. An alternating magnetic field is established by the coil. This alternating magnetic field passes through the conductor and interacts with it to generate electromagnetic induction, creating eddy currents in the conductor. The eddy currents in the conductor also generate their own magnetic fields. The action of the eddy current magnetic field changes the strength of the original magnetic field, thereby causing changes in the coil voltage and impedance. When there are defects on the surface or near the surface of the conductor, it will affect the strength and distribution of the eddy currents. The changes in the eddy currents in turn cause changes in the voltage and impedance of the detection coil. Based on this change, the presence of defects in the conductor can be indirectly known.

[0003] Publication No. CN215785029U discloses an on-line eddy current flaw detection automatic detection device for welded pipes. Through the settings of the front pressing and conveying device and the rear pressing and conveying device, the normal transportation of the pipes can be effectively ensured. And an eddy current flaw detection device is arranged in the middle for detection, judging whether the pipes are qualified or unqualified, and transmitting this information to the control center. The control center controls the operation of the qualified product turning cylinder or the unqualified product turning cylinder according to the corresponding information, so as to realize the process of automatic detection. However, there are still the following problems in the actual use of this patent:

[0004] Although this on-line eddy current flaw detection automatic detection device for welded pipes realizes the process of automatic detection by controlling the operation of the qualified product turning cylinder or the unqualified product turning cylinder, when detecting the eddy current of the pipes, it can only detect one side of the same shaft diameter of the pipes, thus reducing the detection accuracy of the device.

[0005] An eddy current flaw detection device for pipes is proposed to solve the problems mentioned above. Content of the Utility Model

[0006] The purpose of the utility model is to provide an eddy current flaw detection device for pipes to solve the problem that in the current process of realizing automatic detection by controlling the operation of the qualified product turning cylinder or the unqualified product turning cylinder, when detecting the eddy current of the pipes, it can only detect one side of the same shaft diameter of the pipes, thus reducing the detection accuracy of the device as mentioned in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: An eddy current flaw detection device for pipes, including a clamping mechanism, and a first driving motor and a cylinder installed on one side of the clamping mechanism;

[0008] A moving mechanism is arranged below the clamping mechanism, and a second driving motor and an electric telescopic rod are installed on one side of the moving mechanism;

[0009] Further comprising:

[0010] The clamping mechanism includes a fixed column, one side of the fixed column is fixedly connected with a fixed frame, and one side of the fixed column close to the fixed frame is fixedly connected with a first driving motor;

[0011] Wherein, the output end of the first driving motor penetrates through the fixed frame and is fixedly connected with a worm, one end of the worm is rotationally connected with the fixed frame, and one side of the worm is meshed with a worm wheel;

[0012] Wherein, a roller shaft is fixedly connected to the central position inside the worm wheel, one end of the roller shaft is rotationally connected with the fixed frame, and the other end of the roller shaft penetrates through the fixed column and is in fitting connection with a belt.

[0013] Preferably, one end of the belt away from the roller shaft is in fitting connection with a rotating shaft, one end of the rotating shaft is rotationally connected with the fixed column, one side of the fixed column close to the rotating shaft is fixedly connected with a cylinder, and the output end of the cylinder penetrates through the rotating shaft and is rotationally connected with a connecting plate.

[0014] Preferably, brackets are slidably connected to both ends inside the connecting plate, one end of the bracket is fixedly connected with the rotating shaft, and first connecting rods are symmetrically rotationally connected to the outer sides of both ends of the connecting plate.

[0015] Preferably, one end of the first connecting rod away from the connecting plate is rotationally connected with a clamping block, one end of the clamping block close to the first connecting rod is rotationally connected with a second connecting rod, the other end of the second connecting rod away from the clamping block is rotationally connected with the bracket, and one side of the clamping block is in fitting connection with a casting.

[0016] Preferably, the moving mechanism includes a base, one side of the top of the base is fixedly connected with the fixed column, and the other side of the top of the base is fixedly connected with a support column.

[0017] Preferably, one side of the support column is fixedly connected with a second driving motor, the output end of the second driving motor penetrates through the support column and is fixedly connected with a threaded rod, the other end of the threaded rod away from the second driving motor is rotationally connected with the support column, and a threaded sleeve is threadedly connected to the outer side of the threaded rod.

[0018] Preferably, a sliding sleeve is fixedly connected to the bottom side of the threaded sleeve, a guide rod is slidably connected inside the sliding sleeve, both the left and right ends of the guide rod are fixedly connected with the support column, the top side of the threaded sleeve is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with an eddy current flaw detector probe.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: For a kind of eddy current flaw detection device for pipe materials, by setting a clamping mechanism, not only can the casting be clamped, but also the casting can be flipped to detect different positions of the casting. By setting a moving mechanism, the casting can be driven to move for eddy current flaw detection of different positions of the casting. The specific content is as follows:

[0020] 1. By setting a clamping mechanism, not only can the casting be clamped, but also the casting can be flipped to detect different positions of the casting. The air cylinder drives the connecting plate to move outside the bracket, thereby driving the first connecting rod to rotate. By using the limit of the second connecting rod on the clamping block, the relative movement of the two clamping blocks can be realized to clamp the casting. The first driving motor drives the worm to rotate. By using the meshing effect between the worm and the worm wheel, the roller shaft is driven to rotate. By using the synchronous effect of the belt, the rotating shaft and the roller shaft are driven to rotate together. The clamping block is driven to rotate by the rotating shaft, and the flipping of the casting can be realized.

[0021] 2. By setting a moving mechanism, the casting can be driven to move for eddy current flaw detection of different positions of the casting. The second driving motor drives the threaded rod to rotate. By using the threaded effect between the threaded rod and the threaded sleeve, the sliding sleeve has a tendency to rotate. By using the limiting effect of the guide rod on the sliding sleeve, the electric telescopic rod is driven to move along the horizontal direction of the guide rod, and the eddy current flaw detection probe can be driven to move to detect different positions of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is the Figure 1 front sectional structure schematic diagram of the present utility model;

[0024] Figure 3 is the Figure 2 enlarged structure schematic diagram at A in the present utility model;

[0025] Figure 4 is the Figure 2 enlarged structure schematic diagram at B in the present utility model;

[0026] Figure 5 is the Figure 4 closed state structure schematic diagram of the clamping block in the present utility model.

[0027] In the figure: 1. Clamping mechanism; 101. Fixed column; 102. Fixed frame; 103. First driving motor; 104. Worm; 105. Worm gear; 106. Roller shaft; 107. Belt; 108. Rotating shaft; 109. Cylinder; 110. Connecting plate; 111. Bracket; 112. First connecting rod; 113. Clamping block; 114. Second connecting rod; 115. Casting; 2. Moving mechanism; 201. Base; 202. Support column; 203. Second driving motor; 204. Threaded rod; 205. Threaded sleeve; 206. Sliding sleeve; 207. Guide rod; 208. Electric telescopic rod; 209. Eddy current flaw detector probe. Detailed implementation manners

[0028] 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5 , the present invention provides a technical solution: an eddy current flaw detection device for pipes, including a clamping mechanism 1, and a first driving motor 103 and a cylinder 109 installed on one side of the clamping mechanism 1; a moving mechanism 2 is arranged below the clamping mechanism 1, and a second driving motor 203 and an electric telescopic rod 208 are installed on one side of the moving mechanism 2; the clamping mechanism 1 includes a fixed column 101, a fixed frame 102 is fixedly connected to one side of the fixed column 101, and the side of the fixed column 101 close to the fixed frame 102 is fixedly connected to the first driving motor 103. By setting the fixed frame 102, the stability of the operation of the worm 104 is improved;

[0030] The output end of the first driving motor 103 penetrates through the fixed frame 102 and is fixedly connected to a worm 104. One end of the worm 104 is rotatably connected to the fixed frame 102. A worm gear 105 is meshed on one side of the worm 104. A roller shaft 106 is fixedly connected to the central position inside the worm gear 105. One end of the roller shaft 106 is rotatably connected to the fixed frame 102. The other end of the roller shaft 106 penetrates through the fixed column 101 and is attached to a belt 107. Belt pulleys are arranged inside both ends of the belt 107, enabling the rotating shaft 108 and the roller shaft 106 to rotate together;

[0031] One end of the belt 107 away from the roller 106 is adhesively connected with a rotating shaft 108. One end of the rotating shaft 108 is rotatably connected with a fixed column 101. One side of the fixed column 101 close to the rotating shaft 108 is fixedly connected with a cylinder 109. The output end of the cylinder 109 penetrates through the rotating shaft 108 and is rotatably connected with a connecting plate 110. By setting the cylinder 109 to drive the connecting plate 110 to move left and right;

[0032] Both ends inside the connecting plate 110 are slidably connected with brackets 111. One end of the bracket 111 is fixedly connected with the rotating shaft 108. The outer sides of both ends of the connecting plate 110 are symmetrically rotatably connected with first connecting rods 112. One end of the first connecting rod 112 away from the connecting plate 110 is rotatably connected with a clamping block 113. One end of the clamping block 113 close to the first connecting rod 112 is rotatably connected with a second connecting rod 114. One end of the second connecting rod 114 away from the clamping block 113 is rotatably connected with the bracket 111. One side of the clamping block 113 is adhesively connected with a casting 115. By driving the clamping block 113 to rotate through the first connecting rod 112 and simultaneously using the second connecting rod 114 to limit the clamping block 113, the relative movement of the two clamping blocks 113 can be realized to clamp the casting 115;

[0033] The moving mechanism 2 includes a base 201. One side of the top of the base 201 is fixedly connected with the fixed column 101. The other side of the top of the base 201 is fixedly connected with a support column 202. One side of the support column 202 is fixedly connected with a second driving motor 203. The output end of the second driving motor 203 penetrates through the support column 202 and is fixedly connected with a threaded rod 204. One end of the threaded rod 204 away from the second driving motor 203 is rotatably connected with the support column 202. The outer side of the threaded rod 204 is threadedly connected with a threaded sleeve 205. By driving the threaded rod 204 to rotate through the second driving motor 203;

[0034] The bottom side of the threaded sleeve 205 is fixedly connected with a sliding sleeve 206. The inside of the sliding sleeve 206 is slidably connected with a guide rod 207. The left and right ends of the guide rod 207 are both fixedly connected with the support column 202. The top side of the threaded sleeve 205 is fixedly connected with an electric telescopic rod 208. The output end of the electric telescopic rod 208 is fixedly connected with an eddy current flaw detector probe 209. By using the limiting effect of the guide rod 207 on the sliding sleeve 206, the electric telescopic rod 208 can be driven to move along the horizontal direction of the guide rod 207, so as to drive the eddy current flaw detector probe 209 to move and be able to perform eddy current flaw detection on different positions of the casting 115.

[0035] Working principle: Before using this eddy current flaw detection device for pipes, it is necessary to first check the overall situation of the device to ensure that it can work normally. According to Figure 1 - Figure 5As shown, first place the casting 115 between the two clamping blocks 113, and then start the cylinder 109 to drive the connecting plate 110 to move outside the bracket 111, thereby driving the first connecting rod 112 to rotate. By using the limit of the second connecting rod 114 on the clamping block 113, the relative movement of the two clamping blocks 113 can be realized to clamp the casting 115.

[0036] Secondly, start the first driving motor 103 to drive the worm 104 to rotate. By using the meshing effect between the worm 104 and the worm wheel 105, the roller shaft 106 is driven to rotate. By using the synchronization effect of the belt 107, the rotating shaft 108 and the roller shaft 106 are driven to rotate together. The clamping block 113 is driven to rotate through the rotating shaft 108, and the rotation of the casting 115 can be realized.

[0037] Finally, start the second driving motor 203 to drive the threaded rod 204 to rotate. By using the threaded effect between the threaded rod 204 and the threaded sleeve 205, the sliding sleeve 206 has a tendency to rotate. By using the limiting effect of the guide rod 207 on the sliding sleeve 206, the electric telescopic rod 208 is driven to move along the horizontal direction of the guide rod 207, and the eddy current flaw detection probe 209 can be driven to move to perform eddy current flaw detection on different positions of the casting 115.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An eddy current flaw detection device for pipes, comprising a clamping mechanism (1), and a first drive motor (103) and a cylinder (109) installed on one side of the clamping mechanism (1); A moving mechanism (2) is provided below the clamping mechanism (1), as well as a second driving motor (203) and an electric telescopic rod (208) installed on one side of the moving mechanism (2); It is characterized in that Also includes: The clamping mechanism (1) comprises a fixed column (101), one side of the fixed column (101) is fixedly connected to a fixed frame (102), and the side of the fixed column (101) close to the fixed frame (102) is fixedly connected to a first drive motor (103); The output end of the first driving motor (103) passes through the fixed frame (102) and is fixedly connected to a worm (104); one end of the worm (104) is rotatably connected to the fixed frame (102); and one side of the worm (104) is meshingly connected to a worm wheel (105); A roller shaft (106) is fixedly connected to the center position inside the worm gear (105), one end of the roller shaft (106) is rotatably connected to the fixed frame (102), and the other end of the roller shaft (106) passes through the fixed column (101) and is closely connected to a belt (107).

2. The eddy current flaw detection device for pipes according to claim 1, characterized in that: One end of the belt (107) away from the roller (106) is closely connected to a rotating shaft (108), one end of the rotating shaft (108) is rotatably connected to a fixed column (101), and a side of the fixed column (101) close to the rotating shaft (108) is fixedly connected to a cylinder (109), and an output end of the cylinder (109) passes through the rotating shaft (108) and is rotatably connected to a connecting plate (110).

3. The eddy current flaw detection device for pipes according to claim 2, characterized in that: Both ends of the connection plate (110) are slidably connected to brackets (111), one end of the bracket (111) is fixedly connected to the rotating shaft (108), and the outer sides of both ends of the connection plate (110) are symmetrically rotatably connected to first connecting rods (112).

4. The eddy current flaw detection device for pipes according to claim 3, characterized in that: One end of the first connecting rod (112) away from the connecting plate (110) is rotatably connected to a clamping block (113), and one end of the clamping block (113) close to the first connecting rod (112) is rotatably connected to a second connecting rod (114). One end of the second connecting rod (114) away from the clamping block (113) is rotatably connected to a bracket (111), and one side of the clamping block (113) is fittedly connected to a casting (115).

5. The eddy current flaw detection device for pipes according to claim 1, characterized in that: The mobile mechanism (2) comprises a base (201), one side of the top of the base (201) is fixedly connected to a fixed column (101), and the other side of the top of the base (201) is fixedly connected to a support column (202).

6. The eddy current flaw detection device for pipes according to claim 5, characterized in that: One side of the support column (202) is fixedly connected to the second drive motor (203); the output end of the second drive motor (203) passes through the support column (202) and is fixedly connected to a threaded rod (204); one end of the threaded rod (204) away from the second drive motor (203) is rotatably connected to the support column (202); and the outer side of the threaded rod (204) is threadedly connected to a threaded sleeve (205).

7. The eddy current flaw detection device for pipes according to claim 6, characterized in that: The bottom side of the threaded sleeve (205) is fixedly connected to a sliding sleeve (206), the interior of the sliding sleeve (206) is slidably connected to a guide rod (207), both left and right ends of the guide rod (207) are fixedly connected to the support column (202), the top side of the threaded sleeve (205) is fixedly connected to an electric telescopic rod (208), and the output end of the electric telescopic rod (208) is fixedly connected to an eddy current flaw detection probe (209).

Images