A walking mechanism for measuring the inner wall of a metal elbow pipe

Abstract

The application provides a walking mechanism for measuring the inner wall of a metal elbow pipe, and belongs to the technical field of elbow pipe detection. The walking mechanism comprises a walking mechanism, a rope ring, a first connecting plate, a connecting rod, a connecting rod, a first supporting spring, a driving wheel, a spring support, a sliding block, a second connecting plate, and a central support. The rope ring is fixedly connected with the first connecting plate, the first connecting plate is rotationally installed with the connecting rod, the connecting rod is screw-threadedly fixedly installed with the first connecting plate and the central support, the connecting rods are hingedly connected with the spring support and the sliding block, and the wheels are tightly attached to the pipe wall through the supporting spring of the walking mechanism. The six rollers are jointly abutted against and supported on the inner wall of the pipeline under the action of the spring support, the connecting rod and the sliding block. The driving motor drives the rollers to enable the main body to crawl in the pipeline, and the walking mechanism can adapt to pipelines with different diameters within a certain range.

Description

Technical Field

[0001] This invention relates to the field of pipe bending inspection technology, specifically a walking mechanism for measuring the inner wall of a metal pipe bending. Background Technology

[0002] In the petroleum, chemical, aerospace, and hydraulic systems industries, the unobstructed flow of pipeline systems is crucial for ensuring the normal operation of equipment. As an important component of pipeline connections, bends are prone to defects such as internal collapse, diameter reduction, or weld slag residue during processing (e.g., bending, welding). To ensure the flow capacity of the pipeline and the smooth progress of subsequent maintenance (e.g., pigging), the pigging rate of bends must be rigorously tested before leaving the factory.

[0003] Existing pipe bend inner wall measuring devices are difficult to move stably along the inner wall of bends, and are prone to slippage and jamming, resulting in inaccurate measurement data and difficulty in efficiently detecting defective products, which affects the normal use effect. Summary of the Invention

[0004] The purpose of this invention is to provide a traveling mechanism for measuring the inner wall of a metal bend, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a walking mechanism for measuring the inner wall of a metal bent pipe, comprising a walking mechanism including a rope-tying ring, a first connecting plate, a connecting rod, a connecting rod, a first support spring, a drive wheel, a spring support member, a slider, a second connecting plate, and a central support member. The rope-tying ring is fixedly connected to the first connecting plate, the first connecting plate is rotatably mounted to the connecting rod, the connecting rod is threadedly fixedly mounted to the first connecting plate and the central support member, and both ends of the connecting rod are hingedly connected to the spring support member and hingedly connected to the slider. The rope-tying ring 11 can be used to pull the mechanism out of the bent pipe when a malfunction occurs.

[0006] Preferably, the binding loop has four threaded holes for fixed connection with the first connecting plate, the first connecting plate has three threaded holes for installation with the connecting rod, the connecting rod has threaded sections at both ends for installation with the first connecting plate and the central support member, and the connecting rod has two first through holes at each end for hinged connection with the spring support member; Preferably, the drive wheel includes a wheel, a connector, an L-plate, and a drive motor. The drive motor is mounted to the spring support via the connector. The upper end of the spring support has a threaded hole for connection with the drive wheel. Four seventh through holes are symmetrically opened on both sides of the spring support for installation with the connecting rod hinge. Two eighth through holes are symmetrically opened on both sides of the slider for connection with the connecting rod hinge. A ninth through hole is opened in the center of the slider. A threaded hole is opened on the plane of the second connecting plate for connection with the threaded section of the connecting rod. Circular slots are opened in three directions of the central support. The spring support is extended and retracted by the support spring. A threaded hole is opened on the plane of the central support for connection with the connecting rod. Preferably, the wheel is used to crawl along the pipe wall, the larger end of the connector has a threaded hole for connecting with the spring support, the smaller end has a threaded hole for mounting to the bottom of the L-plate, the side of the L-plate has a hole for mounting and fixing the drive motor, the bottom of the drive motor has a threaded hole for mounting the connector, and the drive motor drives the wheel; Preferably, the second connecting plate is fixedly connected to a universal joint mechanism via a pin, and the measuring mechanism is connected through the universal joint mechanism.

[0007] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a walking mechanism, rollers, and spring supports. The walking mechanism's support springs keep the wheels pressed tightly against the pipe wall. The six rollers, supported by the spring supports, connecting rods, and sliders, collectively abut against the inner wall of the pipe and provide support. A drive motor drives the rollers, allowing the main body to crawl within the pipe. This invention can adapt to pipes of different diameters within a certain range. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a structural diagram of the drive motor wheels; Figure 3 This is a schematic diagram of the connecting rod parts; Figure 4 This is a schematic diagram of the connecting rod parts; Figure 5 This is a schematic diagram of a spring support component; Figure 6 This is a schematic diagram of the slider components; Figure 7 This is a schematic diagram of the universal joint mechanism.

[0009] In the diagram: 1. Drive mechanism; 4. Universal connection mechanism; 11. Tie rope ring; 12. First connecting plate; 13. Connecting rod; 14. Connecting rod; 15. Support spring; 16. Drive wheel; 17. Spring support; 18. Slider; 19. Second connecting plate; 120. Central support; 131. Threaded section; 141. First through hole; 161. Wheel; 162. Connector; 163. L-plate; 164. Drive motor. Detailed Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Please see Figure 1-7 This invention provides a technical solution: a walking mechanism for measuring the inner wall of a metal bend, comprising a walking mechanism 1, which includes a rope-binding ring 11, a first connecting plate 12, a connecting rod 13, a connecting rod 14, a first support spring 15, a drive wheel 16, a spring support member 17, a slider 18, a second connecting plate 19, and a central support member 120. The rope-binding ring 11 is fixedly connected to the first connecting plate 12, the first connecting plate 12 is rotatably mounted to the connecting rod 14, the connecting rod 13 is threadedly fixed to the first connecting plate 12 and the central support member 120, and the two ends of the connecting rod 14 are hingedly connected to the spring support member 17 and the slider 28. It can adapt to pipes of different diameters within a certain range. The rope-binding ring 11 can be used to pull the mechanism out of the bend if a malfunction occurs in the bend.

[0012] The binding loop 11 has four threaded holes for fixed connection with the first connecting plate 12. The first connecting plate 12 has three threaded holes for installation with the connecting rod 14. The connecting rod 13 has threaded sections 131 at both ends for installation with the first connecting plate 12 and the central support member 120. The connecting rod 14 has two first through holes 141 at both ends for hinge connection with the spring support member 17. The drive wheel 16 includes a wheel 161, a connector 162, an L-plate 163, and a drive motor 164. The drive motor 164 is installed with the spring support 17 via the connector 162. The spring support 17 has a threaded hole 171 at its upper end for connection with the drive wheel 16. The spring support 17 has four symmetrically arranged seventh through holes 172 on both sides for hinged installation with the connecting rod 13. The slider 18 has two symmetrically arranged eighth through holes 181 on both sides for hinged connection with the connecting rod 13. The slider 18 has a ninth through hole 182 at its center. The second connecting plate 19 has a threaded hole on its plane for connection with the threaded section 131 of the connecting rod 13. The central support 120 has circular slots in three directions. The spring support 17 is extended and retracted by the support spring 15. The central support 120 has a threaded hole on its plane for connection with the connecting rod 13. The wheel 161 is used to crawl along the pipe wall. The larger end of the connector 162 has a threaded hole for connecting with the spring support 17, and the smaller end has a threaded hole for mounting to the bottom of the L-plate 163. The L-plate 163 has a hole on its side for mounting and fixing the drive motor 164. The bottom of the drive motor 164 has a threaded hole for mounting the connector 162. The drive motor 164 drives the wheel 161. The second connecting plate 19 is fixedly connected to a universal connecting mechanism 4 by a pin, and the measuring mechanism is connected through the universal connecting mechanism.

[0013] Working principle: In use, the device is placed inside the pipe to be tested. Under the action of the support spring 15, all six wheels 16 are pressed against the inner wall of the pipe. As the drive motor drives the wheels 16 to roll, the mechanism moves smoothly along the inner wall of the pipe. When encountering undulations, the support spring is compressed, and the connecting rod 14 pushes the slider 18 to slide along the connecting rod 13. This allows it to adapt to pipes of different diameters within a certain range, ensuring that the mechanism can move smoothly inside the pipe and avoiding slippage or jamming. This ensures accurate measurement data, efficiently detects defective products, and guarantees normal subsequent use.

[0014] The installed rope loops allow the mechanism to be pulled out via ropes if it malfunctions in a bend.

[0015] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A traveling mechanism for measuring the inner wall of a metal bent pipe, comprising a traveling mechanism (1), characterized in that: The walking mechanism (1) includes a rope loop (11), a first connecting plate (12), a connecting rod (13), a connecting rod (14), a first support spring (15), a drive wheel (16), a spring support (17), a slider (18), a second connecting plate (19), and a central support (120). The rope loop (11) is fixedly connected to the first connecting plate (12), the first connecting plate (12) is rotatably installed with the connecting rod (14), the connecting rod (13) is threadedly fixedly installed with the first connecting plate (12) and the central support (120), and both ends of the connecting rod (14) are hinged to the spring support (17) and hinged to the slider (28).

2. The traveling mechanism for measuring the inner wall of a metal bent pipe according to claim 1, characterized in that: The binding loop (11) has four threaded holes for fixed connection with the first connecting plate (12). The first connecting plate (12) has three threaded holes for installation with the connecting rod (14). The connecting rod (13) has threaded sections (131) at both ends for installation with the first connecting plate (12) and the central support (120). The connecting rod (14) has two first through holes (141) at both ends for hinge connection with the spring support (17).

3. The traveling mechanism for measuring the inner wall of a metal bent pipe according to claim 1, characterized in that: The drive wheel (16) includes a wheel (161), a connector (162), an L-plate (163), and a drive motor (164). The drive motor (164) is installed on the spring support (17) through the connector (162). The upper end of the spring support (17) has a threaded hole (171) for connecting to the drive wheel (16). The spring support (17) has four symmetrically arranged seventh through holes (172) on both sides for hinged installation with the connecting rod (13). The slider (18) has four symmetrically arranged seventh through holes (172) on both sides. Two eighth through holes (181) are provided for the hinge connection of the connecting rod (13). A ninth through hole (182) is provided in the center of the slider (18). A threaded hole is provided on the plane of the second connecting plate (19) for connection with the threaded section (131) of the connecting rod (13). Circular slots are provided in three directions of the central support member (120). The spring support member (17) is extended and retracted by the support spring (15). A threaded hole is provided on the plane of the central support member (120) for connection with the connecting rod (13).

4. The traveling mechanism for measuring the inner wall of a metal bent pipe according to claim 3, characterized in that: The wheel (161) is used to crawl along the pipe wall. The larger end of the connector (162) has a threaded hole for connecting with the spring support (17), and the smaller end has a threaded hole for mounting to the bottom of the L plate (163). The L plate (163) has a hole on its side for mounting and fixing the drive motor (164). The bottom of the drive motor (164) has a threaded hole for mounting the connector (162). The drive motor (164) drives the wheel (161).

5. The traveling mechanism for measuring the inner wall of a metal bent pipe according to claim 1, characterized in that: The second connecting plate (19) is fixedly connected to a universal connecting mechanism (4) by a pin, and the measuring mechanism is connected through the universal connecting mechanism.

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