A pipeline inspection tong device

Abstract

The utility model discloses a pipeline detection clamp device, including first casing and second casing, first casing and second casing have handle part and the jaw part of semicircle respectively, just the jaw part in -house of first casing and second casing is provided with the iron core respectively, and first casing and second casing are connected through rotating component, rotating component includes fixed shaft and sleeve, fixed shaft is fixedly connected with first casing, and sleeve is fixedly connected with second casing, and rotates and is sleeved in fixed shaft, and the top of fixed shaft is slidably inserted with the limiting rod, the top of sleeve is provided with the mounting block, and the bottom of mounting block is provided with the limiting slot that cooperates with limiting rod, and the inner top wall of limiting slot is slidably provided with the pressure rod, through above -mentioned setting, can avoid the jaw part of first casing to separate the jaw part of second casing's situation in the process of long -term use of this device, and simple operation has improved the work efficiency when detecting.

Description

Technical Field

[0001] This utility model belongs to the field of detection device technology, specifically relating to a pipeline detection clamp device. Background Technology

[0002] The clamp method is a technique used in underground pipeline detection. Its principle involves loading a transmitter signal onto a clamp, which is then placed over the metal pipeline or cable being tested. The clamp acts as a primary coil, while the loop formed by the pipeline and the ground functions as a secondary coil. When the alternating current output from the transmitter flows through the primary coil, it generates a circular magnetic field. This field penetrates the pipeline loop, inducing a secondary current within the pipeline. This method improves the accuracy of the detection.

[0003] Chinese patent CN222619545U discloses a clamp-on current transformer. This design includes a first housing and a second housing, each with a pivot end and an opening / closing end. A locking mechanism, comprising a locking bolt and a locking nut, is located at the opening / closing end. The locking mechanism has a through mounting hole within the first housing, through which the locking bolt is movably connected. A spring is axially positioned within the mounting hole, with its two ends abutting against the head of the locking bolt and the inner wall of the mounting hole, respectively. The threaded portion of the locking bolt extends from the mounting hole. A mating hole corresponding to the mounting hole is located within the second housing, where the locking nut is fixedly positioned. The threaded portion of the locking bolt extends into the mating hole and can be threadedly connected to the locking nut. This design, by connecting the locking bolt and the locking nut, allows for locking of the current transformer during extended testing periods, ensuring stable clamping of the current transformer.

[0004] The above solution requires a screwdriver to turn the locking bolt in the mounting hole, which requires additional tools and involves turning the locking bolt a considerable number of times, making the operation of the above solution rather complicated. Utility Model Content

[0005] The present invention aims to provide a pipeline detection clamp device to solve the problem of the relatively complex operation steps of the above-mentioned solutions.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pipeline detection clamp device includes a first housing and a second housing. The first housing and the second housing each have a handle portion and a semi-circular jaw portion. An iron core is respectively provided in the jaw portion of the first housing and the second housing. The first housing and the second housing are connected by a rotating assembly. The rotating assembly includes a fixed shaft and a sleeve. The fixed shaft is fixedly connected to the first housing, and the sleeve is fixedly connected to the second housing and rotatably sleeved on the fixed shaft. A groove is recessed at the top of the fixed shaft. A prism-shaped limiting rod is slidably inserted into the groove. A compression spring is provided between the limiting rod and the bottom wall of the groove. A mounting block is provided at the top of the sleeve. A limiting groove that cooperates with the limiting rod is provided at the bottom of the mounting block. A pressure rod is slidably inserted through the inner top wall of the limiting groove.

[0008] The principle and effects of this technical solution:

[0009] In the initial state, the jaws of the first and second housings are closed, forming a cylindrical channel with a diameter of R. At this time, the compression spring pushes the top of the limiting rod into the limiting groove, and the first housing cannot rotate relative to the second housing. When it is necessary to fit this device onto the pipeline, hold the handles of the first and second housings with your hands and press the pressure rod with your thumb. The pressure rod pushes the limiting rod into the sliding groove. At this time, pressing the two handles can push the first housing to rotate relative to the second housing along the fixed axis. The maximum distance between the ends of the two jaws is greater than R. After releasing the handles and closing the jaws to fit the pipeline, release the pressure rod. The compression spring pushes the limiting rod into the limiting groove again, and the first housing can no longer rotate relative to the second housing.

[0010] With the above settings, by inserting the limiting rod into the limiting groove, the first housing and the second housing can be locked, preventing the jaws of the first housing from disengaging from the jaws of the second housing during long-term use. The lock can be released by pressing the lever, without the need for additional tools, making the operation simple and improving the efficiency of the testing process.

[0011] In this utility model, the rotating assembly further includes a torsion spring, which is sleeved inside the sleeve and mounted on the fixed shaft. One torsion arm of the torsion spring is inserted into a first slot opened on the inner side wall of the sleeve. A through groove is opened on the inner side wall of the sleeve along its circumference. The other torsion arm of the torsion spring slides through the through groove and is inserted into a second slot opened on the side wall of the first housing.

[0012] The principle and effects of this technical solution:

[0013] When the torsion spring is installed in the sleeve, it has elasticity. The two torsion arms of the torsion spring push the handles of the first and second housings away from each other, thereby closing the jaws of the first and second housings. When the two handles are pressed to move in opposite directions, the other torsion arm of the torsion spring slides in the through groove.

[0014] With the above configuration, the torsion spring can automatically push the first housing to rotate relative to the second housing until the two jaws are closed after the handle is released. This also makes it easy to align the limiting rod with the limiting groove, thus improving the ease of operation of the device.

[0015] In this invention, the mounting block is slidably inserted into the top of the sleeve, and a mounting plate is provided on the top of the mounting block. The top of the second housing is provided with threaded holes spaced apart, and the mounting plate has through holes corresponding to the threaded holes. Through this arrangement, the mounting block and the second housing can be fixedly connected.

[0016] In this invention, a top rod is fixedly provided at the bottom of the pressure rod, and the diameter of the top rod is larger than the diameter of the pressure rod. This design prevents the pressure rod from detaching from the mounting block, facilitating the storage of the device.

[0017] In this invention, the bottom of the push rod is shaped like a spherical crown. This design reduces the contact area between the push rod and the limiting rod, thereby reducing the friction between them and improving the smoothness of rotating the first housing.

[0018] In this invention, the top edge of the limiting rod is provided with a guide slope. This design reduces the area of ​​the top of the limiting rod, making it easier to insert the top of the limiting rod into the limiting groove.

[0019] In this invention, the outer walls of the handle portions of the first and second housings are provided with anti-slip grooves. This design enhances the friction between the hand and the handle portion, preventing slippage when pressing or rotating the handle portion. Attached Figure Description

[0020] Figure 1 This is a top view of the overall structure of this utility model;

[0021] Figure 2 This is an isometric sectional view of the present invention;

[0022] Figure 3 Disassembly of the components of this utility model Figure 1 ;

[0023] Figure 4 Disassembly of the components of this utility model Figure 2 ;

[0024] Figure 5 This is a partial isometric sectional view of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0026] The reference numerals in the accompanying drawings include: 11, first housing; 111, second slot; 12, second housing; 121, screw hole; 21, handle part; 22, jaw part; 23, iron core; 24, anti-slip groove; 31, fixed shaft; 311, slide groove; 32, sleeve; 321, first slot; 322, through groove; 33, limiting rod; 34, compression spring; 35, mounting block; 351, limiting groove; 352, mounting plate; 353, through hole; 36, pressure rod; 361, push rod; 37, torsion spring.

[0027] Example:

[0028] As attached Figure 1-5 As shown, this utility model discloses a pipeline detection clamp device, including a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 respectively have a handle portion 21 and a semi-circular jaw portion 22, and an iron core 23 is respectively provided in the jaw portion 22 of the first housing 11 and the second housing 12. The first housing 11 and the second housing 12 are connected by a rotating assembly. The rotating assembly includes a fixed shaft 31 and a sleeve 32. The fixed shaft 31 is fixedly connected to the first housing 11. Next, the sleeve 32 is fixedly connected to the second housing 12 and rotatably sleeved on the fixed shaft 31. The top of the fixed shaft 31 is recessed with a sliding groove 311. A prism-shaped limiting rod 33 is slidably inserted in the sliding groove 311. A compression spring 34 is provided between the limiting rod 33 and the bottom wall of the sliding groove 311. The top of the sleeve 32 is provided with a mounting block 35. The bottom of the mounting block 35 is provided with a limiting groove 351 that cooperates with the limiting rod 33. A pressure rod 36 is slidably inserted through the inner top wall of the limiting groove 351.

[0029] In this embodiment, the rotating assembly further includes a torsion spring 37, which is sleeved inside the sleeve 32 and mounted on the fixed shaft 31. One torsion arm of the torsion spring 37 is inserted into a first slot 321 opened on the inner sidewall of the sleeve 32. A through slot 322 is opened on the inner sidewall of the sleeve 32 along its circumference. The other torsion arm of the torsion spring 37 slides through the through slot 322 and is inserted into a second slot 111 opened on the sidewall of the first housing 11.

[0030] In this embodiment, the mounting block 35 is slidably inserted into the top of the sleeve 32, and the top of the mounting block 35 is provided with a mounting plate 352. The top of the second housing 12 is provided with screw holes 121 at intervals, and the mounting plate 352 has through holes 353 opposite to the screw holes 121.

[0031] In this embodiment, a top rod 361 is fixedly provided at the bottom of the pressure rod 36, and the diameter of the top rod 361 is larger than the diameter of the pressure rod 36.

[0032] In this embodiment, the bottom of the top rod 361 is configured as a spherical crown shape.

[0033] In this embodiment, the top edge of the limiting rod 33 is provided with a guide slope.

[0034] In this embodiment, the outer side wall of the handle portion 21 of the first housing 11 and the second housing 12 is provided with an anti-slip groove 24.

[0035] The specific implementation process is as follows:

[0036] In the initial state, the jaws 22 of the first housing 11 and the second housing 12 are closed, forming a cylindrical channel with a diameter of R. At this time, the compression spring 34 pushes the top of the limiting rod 33 into the limiting groove 351, and the first housing 11 cannot rotate relative to the second housing 12. When it is necessary to fit this device onto the pipeline, hold the handles 21 of the first housing 11 and the second housing 12 with your hand, and press the pressure rod 36 with your thumb. The pressure rod 36 pushes the limiting rod 33 into the sliding groove 311. At this time, pressing the two handles 21 can push the first housing 11 to rotate relative to the second housing 12 along the fixed axis 31. The maximum distance between the ends of the two jaws 22 is greater than R. After releasing the handles 21 and closing the jaws 22 to fit the pipeline, release the pressure rod 36. The compression spring 34 pushes the limiting rod 33 into the limiting groove 351 again, and the first housing 11 can no longer rotate relative to the second housing 12.

[0037] When the torsion spring 37 is installed in the sleeve 32, it has elasticity. The two torsion arms of the torsion spring 37 push the handles 21 of the first housing 11 and the second housing 12 away from each other, thereby closing the jaws 22 of the first housing 11 and the second housing 12. When pressed to move the two handles 21 in opposite directions, the other torsion arm of the torsion spring 37 slides in the through groove 322.

[0038] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pipeline detection clamp device, characterized in that, include: A first housing and a second housing, each having a handle portion and a semi-circular jaw portion, with an iron core disposed within the jaw portion of each housing, and the first housing and the second housing connected by a rotating assembly. The rotating assembly includes a fixed shaft and a sleeve. The fixed shaft is fixedly connected to the first housing, and the sleeve is fixedly connected to the second housing and rotatably sleeved on the fixed shaft. The top of the fixed shaft is recessed with a sliding groove, and a prism-shaped limiting rod is slidably inserted into the sliding groove. A compression spring is provided between the limiting rod and the bottom wall of the sliding groove. The top of the sleeve is provided with an mounting block, and the bottom of the mounting block is provided with a limiting groove that cooperates with the limiting rod. A pressure rod is slidably inserted through the inner top wall of the limiting groove.

2. The pipeline detection clamp device as described in claim 1, characterized in that: The rotating assembly also includes a torsion spring, which is sleeved inside the sleeve and mounted on the fixed shaft. One torsion arm of the torsion spring is inserted into a first slot opened on the inner side wall of the sleeve. The inner side wall of the sleeve is provided with a through groove along its circumference. The other torsion arm of the torsion spring slides through the through groove and is inserted into a second slot opened on the side wall of the first housing.

3. The pipeline detection clamp device as described in claim 2, characterized in that: The mounting block is slidably inserted into the top of the sleeve, and a mounting plate is provided on the top of the mounting block. The top of the second housing is provided with screw holes at intervals, and the mounting plate has through holes opposite to the screw holes.

4. The pipeline detection clamp device as described in any one of claims 1-3, characterized in that: A top rod is fixedly installed at the bottom of the pressure rod, and the diameter of the top rod is larger than the diameter of the pressure rod.

5. The pipeline detection clamp device as described in claim 4, characterized in that: The bottom of the top rod is designed to be crown-shaped.

6. The pipeline detection clamp device as described in claim 4, characterized in that: The top edge of the limiting rod is provided with a guide slope.

7. The pipeline detection clamp device as described in claim 4, characterized in that: The outer side walls of the handle portion of the first and second housings are provided with anti-slip grooves.

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