Cable welding inspection device

By designing a cable welding inspection device that supports the mounting base and rotating ring, full-angle inspection is achieved, solving the problem that existing devices cannot perform all-round inspection, improving inspection accuracy and adaptability, and reducing safety risks and operational difficulties.

CN224581538UActive Publication Date: 2026-07-31广东广缆电缆实业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
广东广缆电缆实业有限公司
Filing Date
2025-09-02
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing cable welding inspection equipment cannot perform comprehensive inspection, resulting in a high risk of missed inspections, difficulty in detecting hidden defects, increased later costs and safety risks, and reduced practicality of the equipment in actual engineering projects.

Method used

A cable welding inspection device was designed, comprising a support mounting base, a sliding threaded block, a rotating ring, and a detection probe. The rotating ring is driven by a second motor to perform circumferential motion. Combined with a guide assembly and an adjustment assembly, it can achieve full-angle detection and is adaptable to cables of different specifications.

Benefits of technology

It achieves full-angle detection, avoids missed detections, ensures data integrity, has strong adaptability, reduces the difficulty of operation and the investment of manpower and material resources, improves detection accuracy and efficiency, and meets the detection needs of complex welding scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a cable welding inspection device, including a support mounting base, a support base fixedly connected to the bottom of the support mounting base, and a connecting support frame fixedly connected to the top of the support mounting base. A second motor drives a first rotating gear and a second rotating gear to mesh, causing a rotating ring to rotate within the fixed mounting ring. This causes the detection probe to move in a circular motion around the cable weld joint, eliminating blind spots and preventing the missed detection of defects such as incomplete welds and porosity. It also prevents safety accidents such as current instability and short circuits caused by the expansion of hidden dangers. Full-angle detection ensures complete data, comprehensively reflecting welding quality, avoiding misjudgments of pass / fail, preventing unqualified cables from being used in projects and creating hidden dangers, and reducing equipment downtime and line faults caused by missed defects. No additional manpower or resources are required for maintenance, ensuring personnel and property safety. This aligns with the core objective of inspection—"preventing risks in advance"—and offers greater adaptability and practicality.
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Description

Technical Field

[0001] This utility model relates to the field of cable welding technology, specifically to a cable welding inspection device. Background Technology

[0002] Cable welding is a process technology that connects the conductors and related components of two or more cable segments into a continuous, electrically stable, and structurally robust whole through heating, pressurization, or a combination of both. Its core purpose is to ensure that the cable connection has similar electrical properties, mechanical strength, and environmental adaptability to the original cable, avoiding poor conductivity, signal attenuation, overheating, or even safety accidents caused by improper connections. Cable welding inspection equipment is a specialized system used to inspect the quality of cable welded joints and ensure that the welded parts meet safety and performance standards. Its core function is to identify welding defects and avoid circuit faults or safety risks caused by joint problems. It is widely used in power transmission, communication engineering, rail transportation, and industrial equipment connections.

[0003] In existing technologies, traditional equipment cannot effectively inspect cables from all angles, resulting in a high risk of missed defects. It struggles to detect hidden defects, such as poor welds, porosity, and cracks at cable joints, which can be distributed anywhere on the circumference. Blind spots in the inspection can lead to missed problems on the sides, bottom, or at bends. These undetected defects can amplify with vibrations and temperature changes during use, potentially causing unstable current, localized overheating, and even short circuits or fires. Secondly, the reliability of inspection results is poor, easily misleading decisions. Incomplete inspections result in incomplete data, failing to fully reflect welding quality. For example, inspecting only the upper half of the circumference may lead to a false positive, while the lower half may have inadequate insulation. Using substandard cables in projects creates long-term hazards. Furthermore, it increases subsequent costs and safety risks. Missed defects, once exposed during operation, can cause equipment downtime, line failures, and require additional manpower and resources for repairs. More seriously, they can lead to leakage and short circuits, threatening personnel safety and causing property damage, contradicting the core purpose of inspection: "preventing risks in advance." In addition, this type of device has poor adaptability and limited application scope, making it difficult to meet the testing needs of cables of different specifications and complex welding scenarios. In particular, it cannot completely detect blind spots such as the inside of bends, which reduces the practicality of the device in actual engineering. Utility Model Content

[0004] The purpose of this invention is to provide a cable welding inspection device to solve the problem mentioned in the background art that cable welding inspection devices cannot perform comprehensive inspection of cables, which makes it difficult to detect hidden defects, increases later costs and safety risks, and reduces the practicality of the device in actual engineering.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cable welding inspection device, including a support mounting base, a support base fixedly connected to the bottom of the support mounting base, a connecting support frame fixedly connected to the top of the support mounting base, a mounting support frame fixedly connected to the support mounting base, a connecting support plate fixedly connected to the support mounting base, a guide component disposed inside the connecting support plate, an adjustment component disposed inside the connecting support frame, a sliding threaded block slidably connected inside the connecting support frame, a second motor fixedly connected to one side of the sliding threaded block, a rotating mounting rod fixedly connected to the output end of the second motor, a first rotating gear fixedly connected to the rotating mounting rod, a fixed mounting ring fixedly connected to the inner side of the sliding threaded block, a rotating ring rotatably connected inside the fixed mounting ring, a second rotating gear fixedly connected to the rotating ring, and a detection probe fixedly connected to the inner side of the rotating ring. The second rotating gear meshes with the first rotating gear, and the second motor drives the rotating mounting rod to rotate the first rotating gear. Under the condition that the first rotating gear and the second rotating gear are meshed, the rotating ring rotates inside the fixed mounting ring.

[0006] In a preferred embodiment of this technical solution, the connecting support frame has a groove at the corresponding position of the sliding threaded block, and the sliding threaded block slides inside the groove.

[0007] In the preferred embodiment of this technical solution, the fixed mounting ring has a groove at the corresponding position of the rotating ring, and the rotating ring rotates inside the groove.

[0008] According to the preferred embodiment of this technical solution, the adjustment component includes a connecting guide wheel disposed inside the mounting support frame, a first motor fixedly connected to the top of the connecting support frame, a rotating threaded rod fixedly connected to the output end of the first motor, a fixed mounting column fixedly connected to the inside of the support base, a sliding threaded block threadedly connected to the rotating threaded rod, and the sliding threaded block slidably connected to the fixed mounting column. The rotating threaded rod is driven to rotate inside the connecting support frame by the first motor, and the sliding threaded block is driven to slide inside the connecting support frame when the rotating threaded rod is threadedly connected to the sliding threaded block.

[0009] In this preferred embodiment of the technical solution, several connecting guide wheels are provided, and these several connecting guide wheels are uniformly rotated and connected inside the mounting support frame.

[0010] In a preferred embodiment of this technical solution, the guiding assembly includes a third motor fixedly connected to the connecting support plate, a rotating lead screw fixedly connected to the output end of the third motor, a mounting threaded block threadedly connected to the rotating lead screw, a rotating guide wheel rotatably connected to the mounting threaded block, a fourth motor fixedly connected to one side of the connecting support plate, a fixed rotating shaft fixedly connected to the output end of the fourth motor, a first rotating pulley fixedly connected to the fixed rotating shaft, a second rotating pulley rotatably connected inside the connecting support plate, a first transmission belt drivingly connected to the first rotating pulley, the rotating guide wheel, and the second rotating pulley, and a belt fixedly connected to the first rotating pulley. The system includes a third gear on the drive belt, a fourth drive pulley rotatably connected inside the connecting support plate, a fourth gear fixedly connected to the fourth drive pulley, a third drive pulley rotatably connected inside the connecting support plate, a second drive belt connecting the third drive pulley, the fourth drive pulley, and the rotating guide wheel, a mounting support plate fixedly connected to the connecting support plate, an air pump fixedly connected to the mounting support plate, a pneumatic telescopic rod fixedly connected to the output end of the air pump, and a push limiting plate fixedly connected to the pneumatic telescopic rod. The fourth gear meshes with the third gear, and the push limiting plate contacts the first and second drive belts.

[0011] In the preferred embodiment of this technical solution, there are two mounting threaded blocks, and the two mounting threaded blocks slide symmetrically inside the connecting support plate.

[0012] Based on the preferred embodiment of this technical solution, two mounting support plates are provided, and the two mounting support plates are symmetrically fixedly connected to the connecting support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The second motor drives the first and second rotating gears to mesh, causing the rotating ring to rotate within the fixed mounting ring. This makes the detection probe move in a circle around the cable weld joint, eliminating blind spots and avoiding missed defects such as incomplete welds and porosity. It also prevents safety accidents such as unstable current and short circuits caused by the expansion of hidden dangers. Full-angle detection ensures complete data and can comprehensively reflect the welding quality, avoiding misjudgment of qualified cables and preventing unqualified cables from being used in projects and causing hidden dangers. It also reduces equipment downtime and line failures caused by missed defects. No additional manpower and resources are required for maintenance, ensuring the safety of personnel and property. This aligns with the core purpose of inspection to "avoid risks in advance," making it more adaptable and practical.

[0014] 2. A third motor drives a rotating lead screw, which in turn moves two symmetrical mounting threaded blocks. The spacing of the rotating guide wheels can be flexibly adjusted to accommodate cables of different diameters, significantly improving the device's compatibility with various cable specifications and solving the problem of poor adaptability in traditional devices. A fourth motor drives the rotating guide wheels through pulleys and a transmission belt, enabling the cable to move automatically and smoothly, achieving continuous inspection of the weld joint without manual pulling. This reduces operational difficulty and avoids cable swaying caused by manual pushing, ensuring a stable inspection process and improving inspection efficiency. An air pump controls a pneumatic telescopic rod to push a limit plate, which can precisely adjust the tension of the transmission belt to prevent slippage. Combined with the synchronicity of gear meshing transmission, it ensures uniform cable movement speed, allowing the inspection probe to accurately capture every detail of the weld joint, further improving inspection accuracy and meeting the inspection needs of complex welding scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the cable welding inspection device of this utility model; Figure 2 This is a schematic diagram of the connecting support frame structure of this utility model; Figure 3 This is a schematic diagram of the sliding threaded block structure of this utility model; Figure 4 This is a schematic diagram of the connecting support plate structure of this utility model; Figure 5 This is a schematic diagram of the guide component structure of this utility model.

[0016] In the diagram: 1. Support mounting base; 2. Support base; 3. Connecting support frame; 4. Mounting support frame; 5. Connecting support plate; 801. Connecting guide wheel; 802. First motor; 803. Rotating threaded rod; 804. Fixed mounting column; 805. Sliding threaded block; 806. Second motor; 807. Rotating mounting rod; 808. First rotating gear; 809. Fixed mounting ring; 810. Rotating ring; 811. Second rotating gear; 812. Detection probe; 901. Third motor 902. Rotate the lead screw; 903. Install the threaded block; 904. Rotate the guide wheel; 905. Fourth motor; 906. Fix the rotating shaft; 907. First rotating pulley; 908. Second rotating pulley; 909. First transmission belt; 910. Third gear; 911. Fourth gear; 912. Third transmission pulley; 913. Fourth transmission pulley; 914. Second transmission belt; 915. Air pump; 916. Pneumatic telescopic rod; 917. Push the limit plate; 918. Install the support plate. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides an embodiment including a support mounting base 1, a support base 2 fixedly connected to the bottom of the support mounting base 1, a connecting support frame 3 fixedly connected to the top of the support mounting base 1, a mounting support frame 4 fixedly connected to the support mounting base 1, a connecting support plate 5 fixedly connected to the support mounting base 1, a guide component disposed inside the connecting support plate 5, an adjustment component disposed inside the connecting support frame 3, a sliding threaded block 805 slidably connected inside the connecting support frame 3, a second motor 806 fixedly connected to one side of the sliding threaded block 805, a rotating mounting rod 807 fixedly connected to the output end of the second motor 806, a first rotating gear 808 fixedly connected to the rotating mounting rod 807, a fixed mounting ring 809 fixedly connected to the inner side of the sliding threaded block 805, and a rotating gear 808 rotatably connected to the fixed mounting ring 809. The rotating ring 810, the second rotating gear 811 fixedly connected to the rotating ring 810, and the detection probe 812 fixedly connected to the inner side of the rotating ring 810 are all connected together. The second rotating gear 811 is meshed with the first rotating gear 808. The second motor 806 drives the rotating mounting rod 807 to drive the first rotating gear 808 to rotate. Under the condition that the first rotating gear 808 and the second rotating gear 811 are meshed, the rotating ring 810 is driven to rotate inside the fixed mounting ring 809. The second motor 806 starts and drives the rotating mounting rod 807 to drive the first rotating gear 808 to rotate. Because the first rotating gear 808 and the second rotating gear 811 are meshed, the rotating ring 810 will make a circular motion inside the fixed mounting ring 809, thereby causing the detection probe 812 inside the rotating ring 810 to rotate around the cable welding joint.

[0019] Please see Figure 2-3 A further solution based on this embodiment is as follows: the connecting support frame 3 has a groove at the corresponding position of the sliding threaded block 805, and the sliding threaded block 805 slides inside the groove. By opening a special groove for the sliding threaded block 805 on the connecting support frame 3, precise guidance is provided for the movement of the sliding threaded block 805, avoiding deviation or jamming during the sliding process, ensuring that the detection probe 812 can move smoothly along the cable axis, and ensuring the consistency of the detection of welding points at different positions.

[0020] Please see Figure 2-3A further solution based on this embodiment is as follows: the fixed mounting ring 809 has a groove at the corresponding position of the rotating ring 810, and the rotating ring 810 rotates inside the groove. By setting a rotating groove on the fixed mounting ring 809 for the rotating ring 810, a stable trajectory is provided for the circumferential motion of the rotating ring 810, preventing the rotating ring 810 from radially deviating during rotation, ensuring that the distance between the detection probe 812 and the cable welding point is always consistent, and avoiding detection data errors caused by distance changes.

[0021] Please see Figure 2-3 A further solution based on this embodiment is as follows: the adjustment component includes a connecting guide wheel 801 disposed inside the mounting support frame 4, a first motor 802 fixedly connected to the top of the connecting support frame 3, a rotating threaded rod 803 fixedly connected to the output end of the first motor 802, a fixed mounting column 804 fixedly connected inside the support base 2, a sliding threaded block 805 threadedly connected to the rotating threaded rod 803, and the sliding threaded block 805 slidably connected to the fixed mounting column 804. The first motor 802 drives the rotating threaded rod 803 to rotate inside the connecting support frame 3, and the rotating threaded rod 803, under the condition of being threadedly connected to the sliding threaded block 805, drives the sliding... The threaded block 805 slides inside the connecting support frame 3. The first motor 802 drives the rotating threaded rod 803 to drive the threaded transmission between the sliding threaded block 805 and the rotating threaded rod 803, realizing the automated movement of the sliding threaded block 805 without manual adjustment, reducing the difficulty of operation and improving the detection efficiency. At the same time, the sliding engagement between the fixed mounting column 804 and the sliding threaded block 805 restricts the sliding threaded block 805 from rotating synchronously with the rotating threaded rod 803, ensuring that the sliding threaded block 805 moves smoothly only along the axial direction. Combined with the support and guidance of the connecting guide wheel 801 for the cable, the detection component and the cable always remain parallel, further ensuring the detection accuracy and avoiding the impact of component misalignment on the detection results.

[0022] Please see Figure 2-3 A further solution based on this embodiment is as follows: a plurality of connecting guide wheels 801 are provided, and the plurality of connecting guide wheels 801 are evenly rotated and connected inside the mounting support frame 4. By evenly providing a plurality of connecting guide wheels 801 inside the mounting support frame 4, the cable can be supported and guided from multiple angles, ensuring that the cable is always in the center position during the testing process, and avoiding the detection probe 812 from being unable to align with the welding point due to cable deviation.

[0023] Please see Figure 4-5A further embodiment of this solution includes: a guide assembly comprising a third motor 901 fixedly connected to a connecting support plate 5, a rotating lead screw 902 fixedly connected to the output end of the third motor 901, a mounting threaded block 903 threadedly connected to the rotating lead screw 902, a rotating guide wheel 904 rotatably connected to the mounting threaded block 903, a fourth motor 905 fixedly connected to one side of the connecting support plate 5, a fixed rotating shaft 906 fixedly connected to the output end of the fourth motor 905, a first rotating pulley 907 fixedly connected to the fixed rotating shaft 906, a second rotating pulley 908 rotatably connected inside the connecting support plate 5, a first transmission belt 909 drivingly connected to the first rotating pulley 907, the rotating guide wheel 904 and the second rotating pulley 908, a third gear 910 fixedly connected to the first transmission belt 909, a fourth transmission pulley 913 rotatably connected inside the connecting support plate 5, a fourth gear 911 fixedly connected to the fourth transmission pulley 913, and a third gear 910 rotatably connected to the connecting support plate 5. The device includes a third transmission pulley 912 inside plate 5, a second transmission belt 914 connecting the third transmission pulley 912, the fourth transmission pulley 913, and the rotating guide wheel 904, a mounting support plate 918 fixedly connected to the connecting support plate 5, an air pump 915 fixedly connected to the mounting support plate 918, a pneumatic telescopic rod 916 fixedly connected to the output end of the air pump 915, and a push limiting plate 917 fixedly connected to the pneumatic telescopic rod 916. A fourth gear 911 meshes with the third gear 910, and the push limiting plate 917 contacts the first transmission belt 909 and the second transmission belt 914. The third motor 901 drives the rotating screw 902 to move the mounting threaded block 903, which can adjust the spacing of the rotating guide wheel 904 to adapt to the guiding requirements of cables of different diameters and enhance the versatility of the device. The fourth motor 905 drives the rotating guide wheel 904 to rotate through the pulley and the transmission belt, which can drive the cable to move automatically and realize continuous detection of the weld, eliminating the need for manual pulling of the cable and improving detection efficiency.

[0024] Please see Figure 4-5 A further solution based on this embodiment is as follows: two mounting threaded blocks 903 are provided, and the two mounting threaded blocks 903 slide symmetrically inside the connecting support plate 5. By setting two symmetrically sliding mounting threaded blocks 903, two sets of rotating guide wheels 904 can be driven to clamp the cable synchronously from both sides, ensuring that the cable is always in the detection center position and avoiding cable deviation caused by unilateral guidance; at the same time, the symmetrical structure can make the cable evenly stressed on both sides, preventing the cable from deforming due to uneven stress during the guidance process.

[0025] Please see Figure 4-5A further solution based on this embodiment is as follows: two mounting support plates 918 are provided, and the two mounting support plates 918 are symmetrically fixedly connected to the connecting support plate 5. By symmetrically setting the two mounting support plates 918, two sets of air pumps 915 and pneumatic telescopic rods 916 can be installed respectively to adjust the tension of the first transmission belt 909 and the second transmission belt 914, ensuring that the tension of the two transmission belts can be controlled independently, avoiding the inconsistency of the tension of the two transmission belts due to a single tensioning structure, which could lead to cable movement and deviation.

[0026] Working Principle: The device uses the support mounting base 1 and support base 2 as its basic frame. Connecting support frame 3, mounting support frame 4, and connecting support plate 5 form a stable support structure. The guiding component and adjusting component are responsible for cable positioning and detection position adjustment, respectively. During detection, the cable is first fixed by the guiding component: the third motor 901 drives the rotating lead screw 902, which in turn moves two symmetrical mounting threaded blocks 903, causing the rotating guide wheel 904 to clamp and position the cable from both sides, ensuring the cable is centered in the detection area; the fourth motor 905, through the first rotating pulley 907, the second rotating pulley 908, and the first transmission belt 909, in conjunction with the meshing of the third gear 910 and the fourth gear 911, drives the rotating guide wheel 904 to automatically move the cable. To achieve continuous detection, the air pump 915 controls the pneumatic telescopic rod 916 to push the limit plate 917. The tension of the adjustable transmission belt ensures stable transmission. At the same time, the adjustment component drives the movement of the detection structure: the first motor 802 drives the rotating threaded rod 803 to rotate, so that the threaded sliding block 805 smoothly slides along the groove of the fixed mounting column 804 and the connecting support frame 3, driving the detection component to move axially to adapt to the welding section at different positions. Finally, the second motor 806 drives the rotating mounting rod 807, so that the first rotating gear 808 meshes with the second rotating gear 811, driving the rotating ring 810 to rotate in the groove of the fixed mounting ring 809, thereby causing the detection probe 812 inside the rotating ring 810 to make a circular motion around the cable welding joint.

[0027] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Cable welding inspection device comprising a support mounting (1), characterized in that: It also includes a support base (2) fixedly connected to the bottom of the support mounting base (1), a connecting support frame (3) fixedly connected to the top of the support mounting base (1), a mounting support frame (4) fixedly connected to the support mounting base (1), a connecting support plate (5) fixedly connected to the support mounting base (1), a guide component disposed inside the connecting support plate (5), an adjustment component disposed inside the connecting support frame (3), a sliding threaded block (805) slidably connected inside the connecting support frame (3), a second motor (806) fixedly connected to one side of the sliding threaded block (805), a rotating mounting rod (807) fixedly connected to the output end of the second motor (806), and a first rotating gear fixedly connected to the rotating mounting rod (807). (808), a fixed mounting ring (809) fixedly connected to the inner side of the sliding threaded block (805), a rotating ring (810) rotatably connected to the inside of the fixed mounting ring (809), a second rotating gear (811) fixedly connected to the rotating ring (810), a detection probe (812) fixedly connected to the inner side of the rotating ring (810), the second rotating gear (811) meshes with the first rotating gear (808), and the first rotating gear (808) is driven to rotate by the rotating mounting rod (807) driven by the second motor (806), and the rotating ring (810) is driven to rotate inside the fixed mounting ring (809) under the condition that the first rotating gear (808) and the second rotating gear (811) are meshed.

2. The cable weld inspection apparatus of claim 1, wherein: The connecting support frame (3) has a groove at the corresponding position of the sliding threaded block (805), and the sliding threaded block (805) slides inside the groove.

3. The cable welding inspection device according to claim 1, characterized in that: The fixed mounting ring (809) has a groove at the corresponding position of the rotating ring (810), and the rotating ring (810) rotates inside the groove.

4. The cable welding inspection device according to claim 1, characterized in that: The adjustment assembly includes a connecting guide wheel (801) disposed inside the mounting support frame (4), a first motor (802) fixedly connected to the top of the connecting support frame (3), a rotating threaded rod (803) fixedly connected to the output end of the first motor (802), a fixed mounting column (804) fixedly connected to the support base (2), a sliding threaded block (805) threadedly connected to the rotating threaded rod (803), and the sliding threaded block (805) slidably connected to the fixed mounting column (804). The rotating threaded rod (803) is driven to rotate inside the connecting support frame (3) by the first motor (802), and the sliding threaded block (805) is driven to slide inside the connecting support frame (3) under the condition that the rotating threaded rod (803) and the sliding threaded block (805) are threadedly connected.

5. The cable welding inspection device according to claim 4, characterized in that: Several connecting guide wheels (801) are provided, and the several connecting guide wheels (801) are evenly rotated and connected inside the mounting support frame (4).

6. The cable welding inspection device according to claim 1, characterized in that: The guiding assembly includes a third motor (901) fixedly connected to the connecting support plate (5), a rotating screw (902) fixedly connected to the output end of the third motor (901), a mounting threaded block (903) threadedly connected to the rotating screw (902), a rotating guide wheel (904) rotatably connected to the mounting threaded block (903), a fourth motor (905) fixedly connected to one side of the connecting support plate (5), a fixed rotating shaft (906) fixedly connected to the output end of the fourth motor (905), a first rotating pulley (907) fixedly connected to the fixed rotating shaft (906), a second rotating pulley (908) rotatably connected inside the connecting support plate (5), a first transmission belt (909) drivingly connected to the first rotating pulley (907), the rotating guide wheel (904), and the second rotating pulley (908), and a third gear (910) fixedly connected to the first transmission belt (909). The fourth transmission pulley (913) is rotatably connected inside the connecting support plate (5), the fourth gear (911) is fixedly connected to the fourth transmission pulley (913), the third transmission pulley (912) is rotatably connected inside the connecting support plate (5), the second transmission belt (914) is connected between the third transmission pulley (912), the fourth transmission pulley (913) and the rotating guide wheel (904), the mounting support plate (918) is fixedly connected to the connecting support plate (5), the air pump (915) is fixedly connected to the mounting support plate (918), the pneumatic telescopic rod (916) is fixedly connected to the output end of the air pump (915), and the push limiting plate (917) is fixedly connected to the pneumatic telescopic rod (916). The fourth gear (911) is meshed with the third gear (910), and the push limiting plate (917) contacts the first transmission belt (909) and the second transmission belt (914).

7. The cable welding inspection device according to claim 6, characterized in that: There are two mounting threaded blocks (903), and the two mounting threaded blocks (903) slide symmetrically inside the connecting support plate (5).

8. The cable welding inspection device according to claim 6, characterized in that: There are two mounting support plates (918), and the two mounting support plates (918) are symmetrically fixedly connected to the connecting support plate (5).