Telescopic detection clamp exposed out of inspection well

Abstract

The utility model relates to the technical field of pipeline detection, and discloses a telescopic detection clamp exposed out of an inspection well, which comprises a magnet, a rust remover, a telescopic rod, a take-up unit and a transmitter, a threaded mounting groove is formed in the upper end surface of the magnet; the upper end face of the rust remover is fixedly connected with a threaded rod. The telescopic rod is provided with a pay-off groove in a penetrating mode. The take-up unit comprises a take-up shell, a first pay-off wheel, a second pay-off wheel, a positive electrode extension wire, a negative electrode extension wire and a partition plate, the positive electrode extension wire is bundled on the first pay-off wheel, the negative electrode extension wire is bundled on the second pay-off wheel, and the first pay-off wheel and the second pay-off wheel are separated by the partition plate; and the positive wire of the transmitter is electrically communicated with the positive extension line, and the negative wire of the transmitter is electrically communicated with the negative extension line, so that the rust remover and the positive wire of the detection clamp can extend into the ground from the ground, and the problem that the detection clamp in the prior art cannot detect an exposed metal pipeline on the ground by using a direct connection method is solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline detection technology, and in particular to a retractable detection clamp for exposed manholes. Background Technology

[0002] The detection of concealed metal pipelines mainly involves finding the location and depth of underground pipelines without excavation. Currently, pipeline detectors are generally used for this purpose. Pipeline detectors operate in three ways: direct connection, induction, and clamping. The direct connection method is the primary method for detecting metal or centerline-equipped pipelines such as water supply and gas pipelines. During detection, the positive clamp connected to the transmitter of the detector is connected to the point where the target pipeline is exposed, while the negative clamp is grounded. The operator then transmits a signal through the transmitter and tracks the signal to complete the detection of the target pipeline.

[0003] Since exposed target metal pipelines are generally located in underground shafts, when the pipeline to be inspected is buried at a great depth, conventional clamps require inspectors to drill into the shaft to remove rust and apply signals to the target metal pipeline surface. Due to the long-term closure of the shaft, toxic gases can easily be generated. Climbing down the shaft and the harmful gases inside pose a serious threat to the life safety of the inspectors. Furthermore, when there is no grounding within 3 meters of the site, the clamps cannot apply signals to the target pipeline. Therefore, there is an urgent need for a portable, freely retractable clamp auxiliary device with a rust remover and extension cable. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a retractable detection clamp for exposed manholes, which solves the problem that existing detection clamps cannot use the direct connection method to detect exposed metal pipelines on the ground.

[0005] To solve the above-mentioned technical problems, this utility model provides a retractable detection clamp for exposed manholes, comprising:

[0006] A magnet, used to fit against an exposed target metal pipeline, wherein the upper end face of the magnet is provided with a threaded mounting groove;

[0007] A rust remover, wherein a threaded rod is fixedly connected to the upper end face of the rust remover, and the rust remover is threadedly connected to the threaded mounting groove through the threaded rod;

[0008] A telescopic rod, the lower end of which is connected to the upper end face of the threaded rod, and the telescopic rod is provided with a wire-laying groove that passes through its upper and lower end faces;

[0009] The take-up unit includes a take-up housing, a first feed reel, a second feed reel, a positive extension wire, a negative extension wire, and a partition plate. The partition plate is disposed inside the housing and divides the internal space of the housing into a first collection chamber and a second collection chamber. The bottom end of the take-up housing is fixedly connected to the upper end of the telescopic rod. The first feed reel is rotatably connected to the first collection chamber, and the second feed reel is rotatably connected to the second collection chamber. One end of the positive extension wire is wound on the first feed reel, and the other end of the positive extension wire passes through the feed groove from top to bottom and is connected to the threaded rod. One end of the negative extension wire is wound on the second feed reel, and the other end of the negative extension wire extends out of the take-up housing.

[0010] A transmitter, comprising a positive line for emitting a detection signal and a negative line for grounding, wherein the positive line of the transmitter is electrically connected to the positive extension line, and the negative line of the transmitter is electrically connected to the negative extension line.

[0011] As an optional solution, the rotation axes of the first and second wire feeding reels are coaxial, and the first and second wire feeding reels are fixedly mounted on the same rotating shaft.

[0012] As an optional feature, a spring for automatically winding the positive and negative extension wires is fixedly installed on the rotating shaft.

[0013] As an optional solution, the outer wall of the take-up housing is provided with a positive terminal for electrically connecting the positive wire and the positive extension wire, and a negative terminal for electrically connecting the negative wire and the negative extension wire.

[0014] As an optional solution, a grounding magnet is fixedly installed at one end of the negative wire that extends out of the take-up housing.

[0015] As an optional solution, the rust remover is a scraper blade used to scrape off rust from the surface of exposed target metal pipelines.

[0016] As an optional solution, the telescopic rod includes multiple rods that slide sequentially from back to front, with adjacent rods being snapped together by elastic buckles.

[0017] Compared with the prior art, the retractable manhole detection clamp of this utility model has the following advantages: the detection clamp gathers the positive and negative wires onto the first feed wheel and the second guard wheel of the take-up housing, respectively. The positive wire is electrically connected to the magnet, and the negative wire extends out of the take-up housing and is grounded. The magnet is threadedly connected to the front end of the telescopic rod through a threaded rod. The threaded rod is also equipped with a rust remover for removing rust from the surface of the exposed target metal pipeline, so that the rust remover and the positive wire of the detection clamp can extend from the ground into the underground, thereby solving the problem that the detection clamp in the prior art cannot use the direct connection method to detect exposed metal pipelines on the ground. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the retractable exposed pipeline detection clamp of this utility model;

[0019] Figure 2 This utility model relates to a retractable exposed pipeline detection clamp. Figure 1 A magnified view of a section at point A;

[0020] Figure 3 This is a schematic diagram of the rust remover for the retractable exposed pipeline detection clamp of this utility model;

[0021] Figure 4 This is a schematic diagram of the cable retraction housing of the retractable exposed pipeline detection clamp of this utility model;

[0022] In the diagram: 1. Magnet; 101. Threaded mounting groove; 2. Rust remover; 201. Threaded rod; 3. Telescopic rod; 4. Take-up unit; 401. Take-up housing; 402. Positive extension line; 403. Negative extension line; 4031. Grounding magnet; 404. First pay-off reel; 405. Second pay-off reel; 406. Clockwork spring; 407. Separator; 408. Shaft; 5. Transmitter; 501. Positive wire; 502. Negative wire; 6. Exposed target metal pipeline. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] like Figures 1 to 4 As shown, this utility model provides a telescopic detection clamp for exposed manholes, including: a magnet 1, a rust remover 2, a telescopic rod 3, a wire take-up unit 4, and a transmitter 5.

[0025] The magnet 1 is used to fit with the exposed target metal pipeline 6. The upper end face of the magnet 1 is provided with a threaded mounting groove 101, which includes a placement section and a threaded section.

[0026] The upper end face of the rust remover 2 is fixedly connected to a threaded rod 201. The rust remover 2 is threadedly connected to the threaded mounting groove 101 through the threaded rod 201. The rust remover 2 is designed to scrape off the rust from the exposed target metal pipeline 6. The rust remover 2 is placed in the placement section of the threaded mounting groove 101, and part of the threaded rod 201 is threadedly connected to the threaded section of the threaded mounting groove 101.

[0027] The lower end of the telescopic rod 3 is connected to the upper end face of the threaded rod 201, and the telescopic rod 3 is provided with a wire-laying groove that runs through its upper and lower end faces.

[0028] The take-up unit 4 includes a take-up housing 401, a first feed reel 404, a second feed reel 405, a positive extension cable 402, a negative extension cable 403, and a partition plate 407. The partition plate 407 is disposed inside the housing and divides the internal space of the housing into a first collection chamber and a second collection chamber. The bottom end of the take-up housing 401 is fixedly connected to the upper end of the telescopic rod 3. The first feed reel 404 is rotatably connected to the first collection chamber, and the second feed reel 405 is rotatably connected to the first collection chamber. Connected to the second collecting cavity, one end of the positive extension line 402 is wound on the first wire feeding reel 404, and the other end of the positive extension line 402 passes through the wire feeding groove from top to bottom and is connected to the threaded rod 201. One end of the negative extension line 403 is wound on the second wire feeding reel, and the other end of the negative extension line 403 extends out of the wire receiving housing 401. The partition plate 407 is made of insulating material to avoid electromagnetic interference between the positive extension line 402 and the negative extension line 403.

[0029] The transmitter 5 includes a positive line 501 for emitting a detection signal and a negative line 502 for grounding. The positive line 501 of the transmitter 5 is electrically connected to the positive extension line 402, and the negative line 502 of the transmitter 5 is electrically connected to the negative extension line 403. Since the magnet 1, the threaded rod 201, and the positive extension line 402 are all conductive materials, the detection signal emitted by the positive line 501 can be transmitted to the exposed target metal pipeline 6. During the field test, because the detection signal emitted by the positive line 501 is strong, the electromagnetic interference generated by the magnet 1 located at the lower end of the threaded rod 201 on the positive line 501 can be ignored.

[0030] Based on this, the positive wire 501 and negative wire 502 of the transmitter 5 are electrically connected to the positive extension wire 402 and negative extension wire 403 respectively disposed in the take-up housing 401. The positive extension wire 402 is wound on the first pay-off reel 404, and one end of the positive extension wire 402 is connected to the threaded rod 201 and changes length with the telescopic rod 3. The negative extension wire 403 is wound on the second pay-off reel 405, and one end of the negative extension wire 403 extends out of the take-up housing 401. The housing 401 is grounded, the threaded rod 201 is threadedly connected to the magnet 1, and a rust remover 2 is provided at the end of the threaded rod 201 away from the telescopic rod 3, so that the rust remover 2 and the magnet 1 can extend into the exposed target metal pipeline 6 to ensure that the positive line 501 can emit a detection signal. The negative extension line 403 can ensure that the negative line 502 is grounded, thereby solving the problem that the detection clamp in the prior art cannot use the direct connection method to detect exposed metal pipelines on the ground.

[0031] Furthermore, such as Figures 1 to 4 As shown, the first pay-off reel 404 and the second pay-off reel 405 are coaxial on the rotation shaft 408, and the first pay-off reel 404 and the second pay-off reel 405 are fixedly mounted on the same rotating shaft 408. When the rotating shaft 408 rotates, it drives the first pay-off reel 404 and the second pay-off reel 405 to simultaneously unwind or rewind the positive extension line 402 or the negative extension line 403.

[0032] Furthermore, such as Figures 1 to 4 As shown, a spring 406 for automatically winding the positive extension cable 402 and the negative extension cable 403 is fixedly installed on the rotating shaft 408. The first feed wheel 404 and the second feed wheel 405 are each provided with an insertion hole for the spring 406 to rotate. The spring 406 is inserted into the first feed wheel 404 and the second feed wheel 405 through the corresponding insertion hole. The rotation direction of the spring 406 is consistent with the winding direction of the first feed wheel and the second feed wheel 405. After the first feed wheel 404 and the second feed wheel 405 release the positive extension cable 402 and the negative extension cable 403, the spring 406 rotates to drive the first feed wheel 404 and the second feed wheel 405 to wind up the positive extension cable 402 and the negative extension cable 403.

[0033] Furthermore, such as Figures 1 to 4As shown, the outer wall of the take-up housing 401 is provided with a positive terminal for electrically connecting the positive wire 501 and the positive extension wire 402, and a negative terminal for electrically connecting the negative wire 502 and the negative extension wire 403. The tail end of the positive terminal is provided with a positive transition wire connected to the positive extension wire 402. The positive terminal electrically connects the positive wire 501 and the positive extension wire 402. The tail end of the negative terminal is provided with a negative transition wire connected to the negative extension wire 403. The negative terminal electrically connects the negative wire 502 and the negative extension wire 403. The arrangement of the positive and negative terminals allows field personnel to electrically connect the positive wire 501 and the positive extension wire 402, and the negative wire 502 and the negative extension wire 403 without opening the take-up housing 401, thereby reducing the operation steps when using the probe clamp.

[0034] Furthermore, such as Figures 1 to 4 As shown, a grounding magnetic block 4031 is fixedly installed at one end of the negative wire 502 that extends out of the receiving housing 401. The grounding magnetic block 4031 can increase the weight of the grounding end of the negative wire 502, preventing it from failing to ground due to external force, thereby ensuring the normal operation of the transmitter 5.

[0035] Furthermore, such as Figures 1 to 4 As shown, the rust remover 2 is a scraper blade. The scraper blade is used to scrape off the rust on the surface of the exposed target metal pipeline 6. The scraper blade extends into the exposed target metal pipeline 6 along with the telescopic rod 3. The on-site operator shakes the telescopic rod 3 from the ground position to make the scraper blade scrape the surface of the exposed target metal pipeline 6, causing the rust on the surface of the exposed target metal pipeline 6 to fall off, thereby ensuring the magnetic attraction effect between the magnet 1 and the exposed target metal pipeline 6.

[0036] Furthermore, such as Figures 1 to 4 As shown, the telescopic rod 3 includes multiple rods that slide sequentially from back to front, and adjacent rods are connected by elastic buckles.

[0037] Each of the aforementioned rods includes a plurality of telescopic holes, which penetrate the inner and outer walls of the rod. The axes of the telescopic holes are all perpendicular to the axis of the rod. Some telescopic holes are located at the front end of the rod, and others are located at the rear end of the rod. The telescopic holes located at the rear end of the preceding rod correspond to the telescopic holes located at the front end of the following rod, and the corresponding telescopic holes are connected by elastic snap-fit. The overall length of the rod can be changed by increasing or decreasing the number of rods, so that the operator can use the detection clamp to detect the exposed target metal pipeline 6 from a safe position.

[0038] Since the front end of the telescopic rod 3 is provided with a threaded rod 201 and the threaded rod 201 is connected to one end of the positive electrode extension line 402, when the length of the telescopic rod 3 changes, it can directly pull the positive electrode extension line 402, so that the lengths of the telescopic rod 3 and the positive electrode extension line 402 change synchronously.

[0039] Furthermore, this embodiment is not shown in the accompanying drawings. Each of the rods includes at least two sliding tracks, and each sliding track includes a sliding block, a sliding groove, and a fixing bolt. The sliding groove penetrates the inner and outer walls of the rod, and the length direction of the sliding groove is parallel to the length direction of the rod. The front end and rear end of the sliding groove do not penetrate the front end face and rear end face of the rod. The sliding block located in the preceding rod is fixedly disposed on the side wall of the rod. The sliding block is slidably connected to the sliding groove of the following rod, and the end of the sliding block away from the side wall of the rod extends out from the corresponding sliding groove. The sliding block drives the rod fixedly connected to it to slide. The fixing bolt is disposed at the end of the sliding block that extends out of the sliding groove. The diameter of the fixing bolt is larger than the distance between the two groove walls of the sliding groove. The fixing bolt can fasten the sliding block to the side wall of the following rod.

[0040] The working process of this utility model is as follows: First, the positive electrode 501 is electrically connected to the positive electrode extension line 402, and the negative electrode 502 is electrically connected to the negative electrode extension line 403. Then, one end of the negative electrode extension line 403 extending out of the take-up housing 401 is grounded. The first wire feeding wheel 404 feeds the wire so that the rust remover 2 is in contact with the exposed target metal pipeline 6. The rust remover 2 scrapes off the rust on the surface of the exposed target metal pipeline 6. Then, the magnet 1 is threadedly connected to the threaded rod 201 through the threaded mounting groove 101. The rust remover 2 is located in the placement section at this time. The first wire feeding wheel 404 feeds the wire until the magnet 1 is in contact with the exposed target metal pipeline 6. A detection signal is sent to the exposed target metal pipeline 6 through the positive electrode 501.

[0041] In summary, this utility model provides a retractable probe clamp for exposing manholes. The probe clamp fixes the positive wire 501 and negative wire 502 of the transmitter 5 to the take-up housing 401, respectively, and electrically connects the positive wire 501 to the positive extension wire 402, and the negative wire 502 to the negative extension wire 403. The first feed reel 404 and the second feed reel 405 respectively unload the positive extension wire 402 and the negative extension wire 403. The bottom end of the take-up housing 401... A telescopic rod 3 is fixedly connected to the surface. The bottom of the telescopic rod 3 is provided with a threaded rod 201, a rust remover 2, and a magnet 1 threaded to the threaded rod 201. This allows the rust remover 2 and the magnet 1 to extend into the exposed target metal pipeline 6 to ensure that the positive electrode line 501 can emit a detection signal. The negative electrode extension line 403 can ensure that the negative electrode line 502 is grounded. This solves the problem in the prior art that the detection clamp cannot use the direct connection method to detect the exposed target metal pipeline 6 on the ground.

[0042] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A retractable detection clamp for exposing manholes, characterized in that, include: A magnet, used to fit against an exposed target metal pipeline, wherein the upper end face of the magnet is provided with a threaded mounting groove; A rust remover, wherein a threaded rod is fixedly connected to the upper end face of the rust remover, and the rust remover is threadedly connected to the threaded mounting groove through the threaded rod; A telescopic rod, the lower end of which is connected to the upper end face of the threaded rod, and the telescopic rod is provided with a wire-laying groove that passes through its upper and lower end faces; The take-up unit includes a take-up housing, a first feed reel, a second feed reel, a positive extension wire, a negative extension wire, and a partition plate. The partition plate is disposed inside the housing and divides the internal space of the housing into a first collection chamber and a second collection chamber. The bottom end of the take-up housing is fixedly connected to the upper end of the telescopic rod. The first feed reel is rotatably connected to the first collection chamber, and the second feed reel is rotatably connected to the second collection chamber. One end of the positive extension wire is wound on the first feed reel, and the other end of the positive extension wire passes through the feed groove from top to bottom and is connected to the threaded rod. One end of the negative extension wire is wound on the second feed reel, and the other end of the negative extension wire extends out of the take-up housing. A transmitter, comprising a positive line for emitting a detection signal and a negative line for grounding, wherein the positive line of the transmitter is electrically connected to the positive extension line, and the negative line of the transmitter is electrically connected to the negative extension line.

2. The retractable manhole detection clamp according to claim 1, characterized in that, The first and second pay-off reels are coaxial in their rotation axes, and are fixedly mounted on the same shaft.

3. The retractable manhole detection clamp according to claim 2, characterized in that, A spring for automatically winding the positive and negative extension wires is fixedly installed on the rotating shaft.

4. The retractable manhole detection clamp according to claim 1, characterized in that, The outer wall of the take-up housing is provided with a positive terminal for electrically connecting the positive wire and the positive extension wire, and a negative terminal for electrically connecting the negative wire and the negative extension wire.

5. The retractable manhole detection clamp according to claim 1, characterized in that, A grounding magnet is fixedly installed at one end of the negative wire that extends out of the take-up housing.

6. The retractable manhole detection clamp according to claim 1, characterized in that, The rust remover is a scraper blade, which is used to scrape off the rust from the surface of the exposed target metal pipeline.

7. The retractable manhole detection clamp according to claim 1, characterized in that, The telescopic rod includes multiple rods that slide sequentially from back to front, and adjacent rods are engaged by elastic buckles.

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