Pipe line detector induction tongs

Abstract

The utility model relates to pipeline detection device technical field discloses a pipeline detection instrument induction clamp, include: casing, two opposite settings of the jaw, sliding connection in one side of casing, drive assembly and reset component in the casing, drive assembly is used for overcoming the force of reset component and drives two jaws to separate each other, after drive assembly stops and exerts force, reset component can drive two jaws to converge each other, and the jaw handle fixedly connected in the other side of casing, the jaw handle is the tubular structure of open mouth facing away from the casing, is used for connecting extension pole. The utility model designs the telescopic rod of original fixed connection to optimize as the combination structure of "jaw handle + detachable extension pole", thoroughly gives up the drawback of "no matter the scene needs to carry complete long pole structure" in the prior art, reduces the structural redundancy when operating from the source.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline detection devices, and in particular to a pipeline detector induction clamp. Background Technology

[0002] As the core component of underground pipeline detection systems, the inductive clamp of a pipeline detector is a key tool for trenchless pipeline location, routing tracking, and fault detection, widely used in municipal engineering, petrochemicals, power communications, rail transit, and other fields. With the acceleration of urbanization and the increasing complexity of underground pipeline networks, traditional open-cut pipeline inspection methods are no longer sufficient to meet the needs of modern engineering due to their low efficiency, high cost, and potential damage to road infrastructure. The inductive clamp, working in conjunction with the transmitter and receiver of the pipeline detector, can apply a specific frequency signal to the target pipeline without contacting the ground cover, providing a stable signal source for accurate pipeline detection. Its performance directly determines the accuracy of the detection results and the efficiency of the operation.

[0003] In existing technologies, preliminary optimizations have been made to address the pipeline detection needs in complex environments such as underground wells. For example, the utility model patent with announcement number CN215264089U, entitled "A Pipeline Detector Induction Clamp," proposes an integrated design scheme that includes clamping heads, a clamping connection structure, and a telescopic rod. This scheme achieves the goal of enabling operators to perform underground pipeline clamping operations without going down into the well, to a certain extent mitigating the safety risks such as falls and poisoning faced by personnel going down into the well in traditional operations.

[0004] However, this technical solution still has significant structural flaws that hinder its widespread application in actual operations. Firstly, the telescopic rod and rear connecting rod are fixedly connected rather than detachable. This means that when facing shallow pipeline detection scenarios, the telescopic rod cannot be disassembled, and the excessively long overall structure results in insufficient maneuverability when operated from the ground, increasing operator fatigue and making it prone to interference with surrounding obstacles in confined spaces, affecting clamping effectiveness. Secondly, this solution places the spring directly between the spring hooks of the two clamping jaws, completely exposed to the external environment. When clamping pipes of different diameters, the spring is prone to friction and interference with the pipe wall or the jaw structure itself. Over long-term use, this easily leads to elastic decay, surface wear, and even breakage, significantly shortening the equipment's lifespan and increasing maintenance costs.

[0005] Therefore, how to change the current situation where the induction clamp structure of existing pipeline detectors has poor operational flexibility and is prone to interference with pipelines has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The present invention aims to provide a pipeline detector induction clamp to overcome the shortcomings mentioned above.

[0007] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A pipeline detector sensing clamp, comprising:

[0009] case;

[0010] Two opposing clamp heads are slidably connected to one side of the housing;

[0011] A drive assembly and a reset assembly are located within the housing. The drive assembly is used to overcome the force of the reset assembly to separate the two jaws. After the drive assembly stops applying force, the reset assembly can drive the two jaws to close together.

[0012] A clamp handle is fixedly connected to the other side of the housing. The clamp handle is a cylindrical structure with its opening facing away from the housing and is used to connect an extension rod.

[0013] Furthermore, the pliers head includes:

[0014] A semi-circular arc portion, two of which can be joined to form a ring, and a detection coil is built into the arc portion; and

[0015] A sliding part integrally formed with the arc portion, one end of which is slidably connected to the housing.

[0016] Furthermore, a sliding groove is provided on one side wall of the sliding part, and a sliding rail is provided on one side of the housing, with the sliding groove and the sliding rail being slidably connected.

[0017] Furthermore, the driving component includes:

[0018] A movable rod is movably connected within the housing. The reset assembly is used to drive the movable rod to return to its initial state. Multiple movable rings are slidably sleeved on the movable rod along its length.

[0019] Multiple first links, one end of each first link being hinged to the housing, and the other end of each first link being hinged to a corresponding movable ring; and

[0020] Multiple second links, one end of the second link is hinged to one end sidewall of the sliding part, and the other end of the second link is hinged to the movable ring one by one. One end of the first link and one end of the second link, which are hinged to the same movable ring, are respectively located on both sides of the movable ring along the length of the movable rod.

[0021] The movement of the movable rod toward or away from the sliding part can cause the two arc-shaped parts to separate or come together.

[0022] Furthermore, there are two of each of the first and second connecting rods. The extension lines of the two first connecting rods form a "V" shape, and the extension lines of the two second connecting rods also form a "V" shape. The ends of the two first connecting rods that are far apart from each other are respectively hinged to the housing.

[0023] Furthermore, the reset component includes:

[0024] A plurality of guide rods are arranged perpendicular to the movable rod and fixedly connected at one end to the housing. One end of each guide rod is located on the side of the movable rod away from the sliding part, and the other end of each guide rod movably passes through the movable rod.

[0025] A compression spring is fitted around the guide rod in a one-to-one correspondence. One end of the compression spring is connected to the housing, and the other end of the compression spring is connected to the movable rod.

[0026] Furthermore, the housing is provided with a through-hole, and the through-hole is arranged parallel to the guide rod;

[0027] It also includes an operating rod that is movably connected to the strip hole. One end of the operating rod is fixedly connected to the movable rod, and the other end of the operating rod passes through the strip hole and is connected to a connecting ring. The connecting ring is used to connect a pull rope.

[0028] Furthermore, a sealing cap is detachably connected to the opening of the pliers handle, and a connecting pin is provided through the side wall of the pliers handle near the opening.

[0029] Compared with the prior art, this utility model has at least the following advantages:

[0030] (1) This utility model optimizes the original fixed-connection telescopic rod design into a combination structure of "clamp handle + detachable extension rod". The clamp handle adopts a cylindrical structure with the opening facing away from the shell, and the extension rod can be selectively inserted and connected according to the operation requirements. When facing close-range operation scenarios with shallow burial depth, there is no need to install the extension rod. Hand operation can be achieved by simply using the compact clamp handle, which completely eliminates the drawback of the existing technology that "a complete long rod structure must be carried regardless of the scenario", and reduces the structural redundancy during operation from the source.

[0031] (2) This utility model integrates the reset component into the housing cavity, replacing the design in the prior art where the spring is exposed between the clamp heads. The housing is made of high-strength engineering plastic, forming a closed protective space, which completely isolates the compression spring from the external working environment and the outer wall of the pipe, fundamentally avoiding direct contact between the spring and the pipe and the clamp head structure during clamping, and completely eliminating the risk of friction interference. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the induction clamp of the pipeline detector of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the induction clamp of the pipeline detector after the upper housing has been removed;

[0035] Figure 3 This is an exploded view of the induction clamp of the pipeline detector of this utility model.

[0036] Reference numerals: 1. Housing; 2. Clamping head; 3. Drive assembly; 4. Reset assembly; 5. Clamping handle; 6. Operating lever; 7. Connecting ring; 11. Slide rail; 12. Strip hole; 21. Arc portion; 22. Sliding portion; 23. Slide groove; 31. Movable rod; 32. Movable ring; 33. First connecting rod; 34. Second connecting rod; 41. Guide rod; 42. Compression spring; 51. Sealing cap; 52. Connecting pin. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1-3This utility model provides a pipeline detector induction clamp, which aims to solve the problems of poor operational flexibility and easy interference with pipelines in the existing pipeline detector induction clamp structure. The following describes the solution in detail with reference to the specific structure.

[0040] The pipeline detector's sensing clamp mainly consists of five parts: a housing 1, clamp heads 2, a drive assembly 3, a reset assembly 4, and a clamp handle 5. The housing 1 is made of high-strength engineering plastic and has an overall rectangular structure, with internal cavities for installing the drive assembly 3 and the reset assembly 4. Two opposing clamp heads 2 are symmetrically slidably connected to the same side of the housing 1, serving as the direct contact component with the pipeline. The drive assembly 3 overcomes the force of the reset assembly 4, causing the two clamp heads 2 to separate. After the drive assembly 3 stops applying force, the reset assembly 4 causes the two clamp heads 2 to close together. The clamp handle 5 is fixedly connected to the side of the housing 1 away from the clamp heads 2, and has an opening facing away from the housing 1 in a cylindrical shape. This design facilitates direct gripping by the operator and allows for a stable connection with the extension rod (not shown in the figure), effectively extending the operating distance. The extension rod can be the telescopic rod of the utility model patent with announcement number CN215264089U, entitled "A Pipeline Detector Sensing Clamp," or a fixed-length rod used according to different length requirements. One end of the extension rod is inserted into the cylindrical structure of the clamp handle 5 to secure it to the clamp handle 5. Preferably, the inner diameter of the cylindrical structure of the clamp handle 5 gradually decreases in the direction away from the opening.

[0041] Specifically, the clamp head 2 includes an arc-shaped portion 21 and a sliding portion 22, both manufactured using an integrated molding process. This not only ensures high structural strength but also prevents assembly gaps from affecting clamping accuracy. The arc-shaped portion 21 is a standard semi-circle. When the arc-shaped portions 21 of the two clamp heads 2 are closed, they can be precisely assembled into a complete ring, which can be fitted around the periphery of the pipeline to be tested. A detection coil is installed inside the arc-shaped portion 21, which can be installed using the existing inductive clamping method and is connected to an external cable. The sliding portion 22 has a right-angle structure, with one end slidably connected to the housing 1. Specifically, one end of the sliding part 22 extends into the interior of the housing 1 and forms a sliding fit with the housing 1. To ensure smooth sliding and stable direction, long strip-shaped grooves 23 are provided on the front and rear side walls of one end of the sliding part 22. Correspondingly, a slide rail 11 matching the slide groove 23 is integrally formed on the inner wall of the housing 1 near the clamp head 2. The slide rail 11 is embedded in the slide groove 23 and can slide freely along the length of the slide groove 23. The two slide rails 11 are arranged on the front and rear sides of the sliding part 22 to achieve a clamping effect on the sliding part 22 and can effectively prevent the sliding part 22 from deviating during movement.

[0042] The drive assembly 3, located within the housing 1, is responsible for driving the two clamp heads 2 to separate. It includes a movable rod 31, movable rings 32, a first connecting rod 33, and a second connecting rod 34. The movable rod 31 is movably connected inside the housing 1, and its direction of movement is perpendicular to the sliding direction of the clamp heads 2. Multiple movable rings 32, first connecting rods 33, and second connecting rods 34 are provided, and they are arranged in a one-to-one correspondence. Multiple movable rings 32 are slidably fitted onto the movable rod 31 along its length. One end of the first connecting rod 33 is hinged to the housing 1, and the other end of the first connecting rod 33 is hinged to each of the movable rings 32 in a corresponding manner. One end of the second link 34 is hinged to one end of the side wall of the sliding part 22, and the other end of the second link 34 is hinged to the movable ring 32 in a corresponding manner. One end of the first link 33 and one end of the second link 34, which are hinged to the same movable ring 32, are located on both sides of the movable ring 32 along the length of the movable rod 31. The movement of the movable rod 31 away from or towards the sliding part 22 can cause the two arc parts 21 to separate or close together.

[0043] The reset assembly 4 is used to drive the movable rod 31 to reset, thereby causing the two jaws 2 to close. It includes a guide rod 41 and a compression spring 42. Two guide rods 41 are provided, both perpendicular to the movable rod 31. One end of the guide rod 41 is fixedly connected to the inner wall of the housing 1, and the other end is located on the side of the movable rod 31 away from the sliding part 22. The other end movably passes through the movable rod 31, allowing the movable rod 31 to slide freely along the length of the guide rod 41. The compression springs 42 are correspondingly sleeved on the periphery of the guide rods 41. One end of the spring abuts against the inner wall of the housing 1, and the other end abuts against the side wall of the movable rod 31. In its natural state, the compression springs 42 are in a slightly compressed state, using their elasticity to push the movable rod 31 to remain in its initial position close to the jaws 2.

[0044] Two movable rings 32 are slidably fitted on the movable rod 31 along its length. Lubricant is applied between the inner wall of the movable rings 32 and the movable rod 31 to ensure smooth sliding.

[0045] There are two first connecting rods 33 and two second connecting rods 34, and both have the same structure. One end of each of the two first connecting rods 33 is hinged to the inner wall of the housing 1, with the hinge points symmetrically distributed on both sides of the movable rod 31. The extension lines of the two first connecting rods 33 form a "V" shape, and their other ends are hinged to the two movable rings 32 one-to-one. One end of each of the two second connecting rods 34 is hinged to the side wall of the sliding part 22 of the two clamp heads 2, with the hinge point maintaining a certain distance from the end of the sliding part 22. Their other ends are also hinged to the two movable rings 32 one-to-one. The ends of the first connecting rods 33 and the second connecting rods 34 hinged to the same movable ring 32 are located on both sides of the movable ring 32 along the length of the movable rod 31. When the movable rod 31 moves away from the clamp head 2, it drives the two movable rings 32 to move synchronously. Through the lever action of the first link 33 and the second link 34, the two sliding parts 22 are pushed away from each other, thereby causing the two arc parts 21 to separate. When the movable rod 31 loses the external force, the elastic force of the compression spring 42 will push the movable rod 31 back to the initial position, causing the movable rings 32 to move in the opposite direction, so that the first link 33 and the second link 34 pull the two sliding parts 22 closer to each other, and finally realize the closing of the two arc parts 21.

[0046] To facilitate operator control of the drive assembly 3, a strip-shaped hole 12 is provided through the top of the housing 1. The length of the strip-shaped hole 12 is parallel to the axis of the guide rod 41, and an operating rod 6 is movably connected inside it. The operating rod 6 has a cylindrical structure, with one end threaded to the side wall of the movable rod 31, and the other end perpendicularly passing through the strip-shaped hole 12 and extending to the outside of the housing 1. A circular connecting ring 7 is connected to the extended end, and a pull rope (not shown in the drawings) can be attached to the connecting ring 7. By pulling the pull rope, the operating rod 6 can be moved along the strip-shaped hole 12, thereby driving the movable rod 31 to move. For close-range operation scenarios, the operator can directly control it through the operating rod 6; for long-range operation scenarios, remote control can be achieved by pulling the rope, improving operational convenience.

[0047] Regarding the connection function of the pliers handle 5, a detachable sealing cap 51 is detachably connected to its opening. When the extension rod is not needed, the sealing cap 51 is screwed tightly onto the opening of the pliers handle 5 via a threaded connection, preventing dust and debris from entering the interior of the pliers handle 5. When the extension rod needs to be connected, simply unscrew the sealing cap 51. A connecting pin 52 is provided through the side wall of the pliers handle 5 near the opening. This connecting pin 52 is a combination of a pin and a positioning pin. The end of the extension rod can be inserted into the interior of the pliers handle 5. By passing through the small pin and the positioning pin in the pin hole, a stable connection between the extension rod and the pliers handle 5 is achieved. The connection method is simple, reliable, and easy to disassemble quickly.

[0048] It should be further explained that the housing 1 of this utility model consists of an upper housing, a lower housing and connecting screws. The clamp handle 5, one end of the first connecting rod 33 and one end of the guide rod 41 are respectively connected to the lower housing. The upper housing is provided with a strip hole 12 and the upper housing is connected to the lower housing by connecting screws.

[0049] The specific operating steps of this solution are as follows: First, select whether to connect the extension rod according to the working scenario. If the working position is high or located in a deep well, unscrew the sealing cap 51 on the clamp handle 5, insert the extension rod into the clamp handle 5, and fix it with the connecting nail 52. Then, install the pull rope on the connecting ring 7. Second, the operator holds the clamp handle 5 or the extension rod, aligns the arc part 21 of the two clamp heads 2 with the pipeline to be detected, and adjusts the clamp position so that the pipeline is located between the two arc parts 21. Third, by pulling the pull rope on the connecting ring 7, the movable rod 31 is driven to move away from the clamp head 2 along the guide rod 41, and the compression spring 42 is further compressed. The movable rod 31, through the movable ring 32, the first connecting rod 33, and the second connecting rod 34, drives the two sliding parts 22 away from each other, causing the two arc-shaped parts 21 to separate and fit on the outside of the pipeline; in the fourth step, the pull rope is released, and the elastic force of the compressed spring 42 pushes the movable rod 31 back to its original position. Through the linkage mechanism, the two sliding parts 22 are driven closer to each other, causing the two arc-shaped parts 21 to close and tightly clamp onto the outer wall of the pipeline, at which point the pipeline detector can be started for detection; in the fifth step, after the detection is completed, the pull rope is pulled again to separate the two arc-shaped parts 21, and the clamp is removed from the pipeline. If an extension rod is connected, the extension rod can be disassembled by removing the connecting pin 52. Finally, the sealing cap 51 is screwed on to complete the storage.

[0050] Through the above structural design, the induction clamp of this pipeline detector not only retains the advantage of being adaptable to pipelines of different diameters in the existing technology, but also realizes the convenient connection of the extension rod through the special structure of the clamp handle 5, effectively solving the operational difficulties of pipeline detection in special locations. At the same time, the overall structural design is reasonable, the operation steps are simple and easy to understand, and it has high practical value.

[0051] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A pipeline detector induction clamp, characterized in that, include: Shell (1); Two opposing clamp heads (2) are slidably connected to one side of the housing (1); The drive assembly (3) and the reset assembly (4) are located inside the housing (1). The drive assembly (3) is used to overcome the force of the reset assembly (4) to drive the two clamp heads (2) to separate from each other. After the drive assembly (3) stops applying force, the reset assembly (4) can drive the two clamp heads (2) to close together. as well as A clamp handle (5) is fixedly connected to the other side of the housing (1). The clamp handle (5) is a cylindrical structure with its opening facing away from the housing (1) and is used to connect an extension rod.

2. The pipeline detector induction clamp according to claim 1, characterized in that, The pliers (2) include: A semi-circular arc portion (21), two of which can be joined together to form a ring, wherein a detection coil is built into the arc portion (21); and A sliding part (22) is integrally formed with the arc portion (21), and one end of the sliding part (22) is slidably connected to the housing (1).

3. The pipeline detector induction clamp according to claim 2, characterized in that, A sliding groove (23) is provided on one side wall of the sliding part (22), and a slide rail (11) is provided on one side of the housing (1). The sliding groove (23) and the slide rail (11) are slidably connected.

4. The pipeline detector induction clamp according to claim 2, characterized in that, The driving component (3) includes: The movable rod (31) is movably connected inside the housing (1). The reset assembly (4) is used to drive the movable rod to return to its initial state. Multiple movable rings (32) are slidably sleeved on the movable rod (31) along its length direction. Multiple first links (33), one end of each first link (33) is hinged to the housing (1), and the other end of each first link (33) is hinged to a corresponding movable ring (32); and Multiple second links (34), one end of the second link (34) is hinged to one end side wall of the sliding part (22), and the other end of the second link (34) is hinged to the movable ring (32) one by one. One end of the first link (33) and one end of the second link (34) hinged to the same movable ring (32) are respectively located on both sides of the movable ring (32) along the length direction of the movable rod (31); The movement of the movable rod (31) away from or towards the sliding part (22) can cause the two arc parts (21) to separate or close together.

5. The pipeline detector induction clamp according to claim 4, characterized in that, There are two of each of the first link (33) and the second link (34). The extension lines of the two first links (33) form a "V" shape, and the extension lines of the two second links (34) also form a "V" shape. The ends of the two first links (33) that are far apart from each other are respectively hinged to the housing (1).

6. The pipeline detector induction clamp according to claim 4, characterized in that, The reset component (4) includes: A plurality of guide rods (41) are arranged perpendicular to the movable rod (31) and fixedly connected at one end to the housing (1). One end of each guide rod (41) is located on the side of the movable rod (31) away from the sliding part (22), and the other end of each guide rod (41) is movably inserted through the movable rod (31). A compression spring (42) is fitted around the guide rod (41) in a one-to-one correspondence. One end of the compression spring (42) is connected to the housing (1), and the other end of the compression spring (42) is connected to the movable rod (31).

7. The pipeline detector induction clamp according to claim 6, characterized in that, The housing (1) is provided with a through-hole (12), and the through-hole (12) is arranged parallel to the guide rod (41); It also includes an operating rod (6) that is movably connected to the strip hole (12). One end of the operating rod (6) is fixedly connected to the movable rod (31), and the other end of the operating rod (6) passes through the strip hole (12) and is connected to a connecting ring (7). The connecting ring (7) is used to connect the pull rope.

8. The pipeline detector induction clamp according to any one of claims 1 to 7, characterized in that, A sealing cap (51) is detachably connected to the opening of the pliers handle (5), and a connecting pin (52) is provided through the side wall of the pliers handle (5) near the opening.

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