Probe protection device for eddy current flaw detection

Abstract

The probe protection device comprises a protection shell, a fixing box is arranged at the top end of the protection shell, a finger fixing block is installed at the bottom end of the fixing box, and a two-way screw rod is rotationally connected into the top end of the fixing box; a limiting mechanism is installed on the outer side of one end of the two-way screw, and a fixing assembly is installed in one end of the protection shell. Wherein the limiting mechanism comprises a limiting box installed on one side of the protective shell, one end of the bidirectional screw rod penetrates through the limiting box to be rotationally connected, fixing pipes are symmetrically installed in the two ends of the limiting box, and fixing rods are slidably connected into the fixing pipes, so that the inserting blocks and the inserting holes can be connected in an inserted mode; and therefore, the phenomenon that the two-way screw rotates due to an external force factor can be effectively avoided, the mounting stability of the probe in the protective shell is improved, and convenience is brought to a worker when the probe is used.

Description

Technical Field

[0001] The utility model relates to the technical field of eddy current flaw detectors, and specifically relates to a probe protection device for eddy current flaw detection. Background Technique

[0002] Eddy current flaw detectors are often used in military, aviation, railway, industrial and mining enterprises and can be used in the wild or on-site. When an eddy current flaw detector works, it detects by fitting a probe with the item to be detected. To ensure that the probe is not damaged during the fitting detection process, the probe is often protected by a protective shell.

[0003] Publication No. CN219162053U discloses a protective shell for an eddy current flaw detector probe. In this device, arc-shaped rubber clamping blocks are arranged on both sides inside the installation cavity. When the eddy current flaw detector probe is installed in the installation cavity, by rotating the anti-slip rotation block, the two arc-shaped rubber clamping blocks can clamp the eddy current flaw detector probe. Under the clamping of the two arc-shaped rubber clamping blocks, the eddy current flaw detector probe will be firmly fixed. Thus, the distance between the two arc-shaped rubber clamping blocks can be changed by rotating the anti-slip rotation block to adapt to eddy current flaw detector probes of different widths, increasing the scope of application and facilitating daily use. However, the following problems still exist in the actual use of this patent:

[0004] In this device, by rotating the anti-slip rotation block, the two arc-shaped rubber clamping blocks can clamp the eddy current flaw detector probe. Under the clamping of the two arc-shaped rubber clamping blocks, the eddy current flaw detector probe will be firmly fixed. Thus, the distance between the two arc-shaped rubber clamping blocks can be changed by rotating the anti-slip rotation block to adapt to eddy current flaw detector probes of different widths. However, the bidirectional screw of this device does not have a limit structure. As a result, when a staff member uses the eddy current flaw detector probe, it may cause the phenomenon that other items touch the rotation block, and further cause the rotation block to drive the bidirectional screw to rotate, resulting in the phenomenon that the arc-shaped rubber clamping blocks are not stably fixed, bringing inconvenience to the staff during use.

[0005] A probe protection device for eddy current flaw detection is proposed to facilitate solving the problems mentioned above. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a probe protection device for eddy current testing, so as to solve the problem proposed in the above background technology. Currently, by rotating the anti-slip rotating block, the two arc-shaped rubber clamping blocks can clamp the probe of the eddy current tester. Under the clamping of the two arc-shaped rubber clamping blocks, the probe of the eddy current tester will be firmly fixed. Thus, the distance between the two arc-shaped rubber clamping blocks can be changed by rotating the anti-slip rotating block to adapt to eddy current tester probes of different widths. However, the bidirectional screw of this device does not have a limiting structure, which may cause the phenomenon that other objects touch the rotating block when the staff uses the probe of the eddy current tester. Furthermore, it may cause the rotating block to drive the bidirectional screw to rotate, resulting in the phenomenon that the arc-shaped rubber clamping blocks are not stably fixed, bringing inconvenience to the staff during use.

[0007] To achieve the above object, the present utility model provides the following technical solution: A probe protection device for eddy current testing, including a protective shell. A fixed box is provided at the top of the protective shell, a finger fixing block is installed at the bottom of the fixed box, and a bidirectional screw is rotatably connected inside the top of the fixed box; A limiting mechanism is installed on the outer side of one end of the bidirectional screw, and a fixing component is installed inside one end of the protective shell;

[0008] Among them, the limiting mechanism includes a limiting box installed on one side of the protective shell. One end of the bidirectional screw passes through the limiting box and is rotatably connected. Fixed tubes are symmetrically installed inside both ends of the limiting box. A fixing rod is slidably connected inside the fixed tube. A push plate is installed at one end of the fixing rod. A first telescopic spring is sleeved on the outer side of the fixing rod. Fixed sleeves are symmetrically installed on both sides of the fixed tube. A sliding rod is slidably connected inside the fixed sleeve. One end of the sliding rod is fixedly connected to the push plate. Plug blocks are installed on one side of the push plate. Plug holes are opened on the outer side of one end of the bidirectional screw. The plug blocks are inserted into the plug holes.

[0009] Preferably, connecting plates are symmetrically threadedly connected to the outer sides of both ends of the bidirectional screw. A moving plate is installed at the bottom of the connecting plate. A sliding groove is opened on one side of the moving plate. A support rod is installed inside the sliding groove. A slider is slidably connected to the outer side of the support rod. A second telescopic spring is sleeved on the outer side of the support rod. A rubber block is installed on one side of the slider.

[0010] Preferably, the fixing component includes a cover inserted into the inside of one end of the protective shell. Brackets are symmetrically installed at one end of the protective shell. A plug rod is slidably connected inside the bracket. One end of the plug rod is inserted into the cover. A push block is installed on the outer side of the plug rod. A sliding box is installed inside the inner side of the bracket. A moving block is slidably connected inside the sliding box. A third telescopic spring is arranged between the moving block and the inside of the sliding box. One end of the push block is fixedly connected to the moving block.

[0011] Preferably, guide grooves are symmetrically formed inside the bottom end of the protective shell, a guide plate is installed at the bottom end of the moving plate, and balls are rotatably connected to the bottom ends of the guide plates, and the balls are rotatably connected to the guide grooves.

[0012] Preferably, a rubber pad is embedded inside the bottom end of the protective shell.

[0013] Preferably, the slider is slidably connected inside the chute.

[0014] Preferably, the connecting plate is slidably connected inside the protective shell.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this probe protection device for eddy current flaw detection, the specific content is as follows: By pulling the two fixing rods to slide inside the fixing tube, at this time the fixing rods drive the push plate to slide inside the limit box, at this time the first telescopic spring contracts, and then the sliding rod slides inside the fixing sleeve. Due to the resilience of the first telescopic spring, the plug can be inserted into the jack, so as to fix and limit the adjusted bidirectional screw, effectively avoiding the phenomenon that the bidirectional screw rotates due to external force factors, and then improving the installation stability of the probe inside the protective shell. The bidirectional screw drives the moving plate to move in a converging and expanding trajectory, so that multiple rubber blocks squeeze the probe, and then the rubber blocks drive the sliders to slide on the support rods, and then utilize the tension generated by the second telescopic spring, so as to enable the rubber blocks to continuously squeeze the probe, so as to automatically adjust the limit according to the specifications of the probe, and then greatly improve the stability when the probe is fixed. Due to the contractility of the third telescopic spring, the insertion rod can be inserted into the cover, so as to achieve the effect of quickly installing and disassembling the cover, which is convenient for the staff to assemble between the probe and the protective shell, and greatly improves the probe installation efficiency.

[0016] 1. By pulling the two groups of fixed rods to slide inside the fixed tube, at this time the fixed rods drive the push plate to slide inside the limit box, and at this time the first telescopic spring contracts. Furthermore, the sliding rod slides inside the fixed sleeve. By releasing the fixed rods, and then through the reset property of the first telescopic spring, the plug block can be inserted into the jack, so as to fix and limit the adjusted bidirectional screw, effectively avoiding the phenomenon that the bidirectional screw rotates due to external force factors, and then improving the installation stability of the probe inside the protective shell, bringing convenience to the staff during use. By rotating the bidirectional screw to drive the movement of the connecting plate, the movement of the connecting plate drives the moving plate to move along a converging and unfolding trajectory, and then the multiple rubber blocks squeeze the probe. At this time, the bottom end of the probe is squeezed between the rubber pad, and then the rubber blocks drive the sliders to slide on the support rods. Furthermore, by using the tension generated by the second telescopic spring, the rubber blocks can continuously squeeze the probe, so as to automatically adjust the limit according to the specifications of the probe, and then greatly improve the stability when the probe is fixed. And through the design of the rubber blocks, the phenomenon that the probe is damaged due to external impact on the protective shell can be effectively avoided, realizing the anti-fall and buffering effect, bringing practicality to the staff during use;

[0017] 2. By inserting the cover into the inner part of one end of the protective shell, and then pulling the push block to drive the insertion rod to slide inside the bracket. At this time, the moving block slides inside the sliding box, and at this time the third telescopic spring extends. By releasing the push block, and then through the contractility of the third telescopic spring, the insertion rod can be inserted into the cover, so as to achieve the effect of quickly installing and disassembling the cover, and then facilitating the staff to assemble the probe and the protective shell, greatly improving the installation efficiency of the probe and bringing convenience to the staff during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the overall structure of the limiting mechanism in the present invention;

[0020] Figure 3 is a partially enlarged schematic diagram of the limiting mechanism in the present invention;

[0021] Figure 4 is a schematic diagram of the overall side view structure of the present invention;

[0022] Figure 5 is a schematic diagram of the overall structure of the fixing component in the present invention;

[0023] Figure 6 is a partially enlarged schematic diagram of part A in the present invention.

[0024] In the figure: 1. Protective shell; 101. Fixed box; 102. Finger fixing block; 103. Bidirectional screw; 2. Limiting mechanism; 201. Limiting box; 202. Fixed pipe; 203. Fixed rod; 204. Push plate; 205. First telescopic spring; 206. Fixed sleeve; 207. Slide bar; 208. Insert block; 209. Insert hole; 210. Connecting plate; 211. Moving plate; 212. Chute; 213. Support rod; 214. Slide block; 215. Second telescopic spring; 216. Rubber block; 217. Rubber pad; 218. Guide groove; 219. Guide plate; 220. Ball; 3. Fixing component; 301. Cover; 302. Support; 303. Insert rod; 304. Push block; 305. Sliding box; 306. Moving block; 307. Third telescopic spring. Detailed implementation manners

[0025] 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. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1-6 , the present invention provides a technical solution: A probe protection device for eddy current testing, including a protective shell 1. A fixed box 101 is provided at the top of the protective shell 1, and a finger fixing block 102 is installed at the bottom of the fixed box 101. And a bidirectional screw 103 is rotatably connected inside the top of the fixed box 101; A limiting mechanism 2 is installed on the outer side of one end of the bidirectional screw 103, and a fixing component 3 is installed inside one end of the protective shell 1;

[0027] Among them, the limiting mechanism 2 includes a limiting box 201 installed on one side of the protective shell 1, and one end of the bidirectional screw 103 penetrates through the limiting box 201 and is rotatably connected. Fixed tubes 202 are symmetrically installed inside both ends of the limiting box 201. A fixed rod 203 is slidably connected inside the fixed tube 202. A push plate 204 is installed at one end of the fixed rod 203. A first telescopic spring 205 is sleeved outside the fixed rod 203. Fixed sleeves 206 are symmetrically installed on both sides of the fixed tube 202. A sliding rod 207 is slidably connected inside the fixed sleeve 206. One end of the sliding rod 207 is fixedly connected to the push plate 204. Insert blocks 208 are installed on one side of the push plate 204. Jacks 209 are opened on the outer side of one end of the bidirectional screw 103. The insert block 208 is inserted into the jack 209, so that the insert block 208 can be inserted into the jack 209, thereby fixing and limiting the adjusted bidirectional screw 103, effectively avoiding the phenomenon that the bidirectional screw 103 rotates due to external force factors, and further improving the installation stability of the probe inside the protective shell 1, bringing convenience to the staff during use;

[0028] Symmetrically threaded connections are provided on the outer sides of both ends of the bidirectional screw 103 with connecting plates 210. The connecting plates 210 are slidably connected inside the protective shell 1. A moving plate 211 is installed at the bottom end of the connecting plate 210. A chute 212 is provided on one side of the moving plate 211. A support rod 213 is installed inside the chute 212. A slider 214 is slidably connected to the outer side of the support rod 213. The slider 214 is slidably connected inside the chute 212. A second telescopic spring 215 is sleeved on the outer side of the support rod 213. A rubber block 216 is installed on one side of the slider 214. A rubber pad 217 is embedded inside the bottom end of the protective shell 1. By rotating the bidirectional screw 103 to drive the movement of the connecting plate 210, the movement of the connecting plate 210 drives the moving plate 211 to move along a gathering and unfolding trajectory, thereby causing multiple rubber blocks 216 to squeeze the probe. At this time, there is extrusion between the bottom end of the probe and the rubber pad 217, so that the rubber block 216 drives the slider 214 to slide on the support rod 213, and then utilizes the tension generated by the second telescopic spring 215, so as to enable the rubber block 216 to continuously squeeze the probe, and thus can automatically adjust the limit according to the specifications of the probe, thereby greatly improving the stability when the probe is fixed. And through the design of the rubber block 216, it can effectively avoid the phenomenon that the probe is damaged due to an external force hitting the protective shell 1, achieving an anti-fall and buffering effect, bringing practicality to the staff during use. Symmetrically provided with guide grooves 218 inside the bottom end of the protective shell 1. A guide plate 219 is installed at the bottom end of the moving plate 211. And rolling balls 220 are rotatably connected to the bottom ends of the guide plates 219. The rolling balls 220 are rotatably connected with the guide grooves 218. By the movement of the moving plate 211 driving the movement of the guide plate 219, the movement of the guide plate 219 drives the rolling balls 220 to be rotatably connected with the guide grooves 218, so that the movement of the moving plate 211 can be made more stable.

[0029] The fixing component 3 includes a cover 301 inserted into the inner part of one end of the protective shell 1. Symmetrically installed brackets 302 are provided at one end of the protective shell 1. A plug rod 303 is slidably connected inside the bracket 302. One end of the plug rod 303 is inserted into the cover 301. A push block 304 is installed on the outer side of the plug rod 303. A sliding box 305 is installed inside the inner side of the bracket 302. A moving block 306 is slidably connected inside the sliding box 305. A third telescopic spring 307 is provided between the moving block 306 and the inside of the sliding box 305. One end of the push block 304 is fixedly connected to the moving block 306. Due to the contractility of the third telescopic spring 307, the plug rod 303 can be inserted into the cover 301, so as to achieve the effect of quickly installing and disassembling the cover 301, thereby facilitating the staff to assemble between the probe and the protective shell 1, greatly improving the probe installation efficiency, and bringing convenience to the staff during use.

[0030] Working principle: Before using this kind of probe protection device for eddy current testing, it is necessary to first check the overall condition of the device to ensure that it can work normally. According to Figure 1 - Figure 6 As shown, by pulling the two groups of fixed rods 203 to slide inside the fixed tube 202, at this time the fixed rod 203 drives the push plate 204 to slide inside the limit box 201. At this time, the first telescopic spring 205 contracts, and then the sliding rod 207 slides inside the fixed sleeve 206. By releasing the fixed rod 203, and then through the reset property of the first telescopic spring 205, the plug 208 can be inserted into the jack 209, so as to fix and limit the adjusted bidirectional screw rod 103, effectively avoiding the phenomenon that the bidirectional screw rod 103 rotates due to external force factors, thereby improving the installation stability of the probe inside the protective shell 1, bringing convenience to the staff during use. By rotating the bidirectional screw rod 103 to drive the movement of the connecting plate 210, the movement of the connecting plate 210 drives the moving plate 211 to move along a converging and expanding trajectory, and then multiple rubber blocks 216 squeeze the probe. At this time, the bottom end of the probe is squeezed between the rubber pad 217, and then the rubber block 216 drives the slider 214 to slide on the support rod 213, and then using the tension generated by the second telescopic spring 215, the rubber block 216 can continuously squeeze the probe, so as to automatically adjust the limit according to the specifications of the probe, thereby greatly improving the stability when the probe is fixed. And through the design of the rubber block 216, it can effectively avoid the phenomenon that the probe is damaged due to external impact on the protective shell 1, realizing the anti-fall and buffering effect, bringing practicality to the staff during use. By the movement of the moving plate 211 driving the movement of the guide plate 219, the movement of the guide plate 219 drives the rolling connection between the ball 220 and the guide groove 218, so that the movement of the moving plate 211 is more stable;

[0031] By inserting the cover 301 into the inner part of one end of the protective shell 1, and then pulling the push block 304 to drive the insertion rod 303 to slide inside the bracket 302. At this time, the moving block 306 slides inside the sliding box 305. At this time, the third telescopic spring 307 extends. By releasing the push block 304, and then through the contraction property of the third telescopic spring 307, the insertion rod 303 can be inserted into the cover 301, so as to achieve the effect of quickly installing and disassembling the cover 301, thereby facilitating the staff to assemble between the probe and the protective shell 1, greatly improving the probe installation efficiency, and bringing convenience to the staff during use.

[0032] The protective shell 1, the fixed box 101, the finger fixing block 102 and the bidirectional screw rod 103 are existing technologies. The patent with publication number CN219162053U discloses a protective housing for an eddy current flaw detector probe, and the devices used therein will not be elaborated here.

[0033] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A probe protection device for eddy current flaw detection, comprising a protective shell (1), a fixing box (101) being provided at the top end of the protective shell (1), a finger fixing block (102) being installed at the bottom end of the fixing box (101), and a bidirectional screw (103) being rotatably connected inside the top end of the fixing box (101); It is characterized by: Also includes: A limiting mechanism (2) is installed on the outside of one end of the bidirectional screw (103), and a fixing component (3) is installed inside one end of the protective shell (1); The limiting mechanism (2) comprises a limiting box (201) installed on one side of the protective shell (1), and one end of the bidirectional screw (103) passes through the limiting box (201) and is rotatably connected, and fixed tubes (202) are symmetrically installed inside the two ends of the limiting box (201), and the inside of the fixed tube (202) is slidably connected to a fixed rod (203), and one end of the fixed rod (203) is installed with a push plate (204), and the outer side of the fixed rod (203) is sleeved with a first extension rod. Compression spring (205), and fixed sleeves (206) are symmetrically installed on both sides of the fixed tube (202), and the interior of the fixed sleeve (206) is slidably connected to a slide rod (207), and one end of the slide rod (207) is fixedly connected to the push plate (204), and an insert block (208) is installed on one side of the push plate (204), and an outer side of one end of the bidirectional screw (103) is provided with a socket (209), and the insert block (208) is plugged into the socket (209).

2. The eddy current flaw detection probe protection device according to claim 1, characterized in that: The outer sides of the two ends of the bidirectional screw (103) are symmetrically threadedly connected with connecting plates (210), and a movable plate (211) is installed at the bottom end of the connecting plate (210), and a sliding groove (212) is opened on one side of the movable plate (211), and a support rod (213) is installed inside the sliding groove (212), and a slider (214) is slidably connected to the outer side of the support rod (213), and a second telescopic spring (215) is sleeved on the outer side of the support rod (213), and a rubber block (216) is installed on one side of the slider (214).

3. The eddy current flaw detection probe protection device according to claim 1, characterized in that: The fixing assembly (3) comprises a cover (301) inserted into the interior of one end of the protective shell (1), and a bracket (302) is symmetrically installed at one end of the protective shell (1), and an insertion rod (303) is slidably connected inside the bracket (302), and one end of the insertion rod (303) is inserted between the cover (301), and a push block (304) is installed on the outside of the insertion rod (303), and a sliding box (305) is installed on the inside of the bracket (302), and a moving block (306) is slidably connected inside the sliding box (305), and a third telescopic spring (307) is provided between the moving block (306) and the interior of the sliding box (305), and one end of the push block (304) is fixedly connected to the moving block (306).

4. The eddy current flaw detection probe protection device according to claim 1, characterized in that: A guide groove (218) is symmetrically provided inside the bottom end of the protective shell (1), and a guide plate (219) is installed at the bottom end of the movable plate (211), and the bottom end of the guide plate (219) is rollingly connected with a ball (220), and the ball (220) is rollingly connected to the guide groove (218).

5. The eddy current flaw detection probe protection device according to claim 1, characterized in that: A rubber pad (217) is embedded inside the bottom end of the protective shell (1).

6. The eddy current flaw detection probe protection device according to claim 2, characterized in that: The slider (214) is located inside the slide groove (212) and is slidably connected.

7. The eddy current flaw detection probe protection device according to claim 2, characterized in that: The connecting plate (210) is located inside the protective shell (1) and is slidably connected.

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