A borescope

Abstract

The application provides a pipeline endoscope, which comprises a master control box, a signal cable, a first turntable and a camera, one end of the signal cable is connected with the master control box, the other end of the signal cable is connected with the camera, the signal cable is fixed on the first turntable, the pipeline endoscope further comprises a dredging mechanism, the dredging mechanism comprises a dredging head, a coil, a second turntable and a motor, one end of the coil is connected with the motor, the other end of the coil is connected with the dredging head, and the coil is fixed on the second turntable. The pipeline endoscope has the dredging mechanism, can dredge the blocked pipeline, integrates the pipeline detection and the pipeline dredging function, brings great convenience, improves the work efficiency and is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of video detection technology, and specifically relates to a pipe endoscope. Background Technology

[0002] Pipe endoscopes are primarily used for video inspection of pipes. During video inspection, pipe blockages are frequently encountered, especially in smaller diameter pipes. In such cases, video inspection becomes impossible, and unblocking the pipe requires additional equipment. Inspectors often don't carry pipe unblocking equipment with them, or if they do, it increases labor costs. Pipe blockages also consume extra time, reducing work efficiency. If a pipe endoscope also had a pipe unblocking function, this common problem in video inspection could be solved. The key to solving pipe unblocking problems lies in how to better integrate the unblocking mechanism with the existing structure of the pipe endoscope, ensuring that video inspection and pipe unblocking operations do not interfere with each other.

[0003] Therefore, it is necessary to provide a pipe endoscope with a clearing mechanism that can clear blocked pipes, while coexisting well with existing pipe detection structures and operating independently without interfering with each other. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe endoscope that overcomes the shortcomings of existing pipe endoscopes in that they cannot be used for pipe unblocking.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A pipe endoscope includes a main control box, a signal cable, a first turntable, and a camera. One end of the signal cable is connected to the main control box, and the other end of the signal cable is connected to the camera. The signal cable is fixed on the first turntable. The endoscope further includes a dredging mechanism, which includes a dredging head, a coil, a second turntable, and a motor. One end of the coil is connected to the motor for transmission, and the other end of the coil is connected to the dredging head. The coil is fixed on the second turntable.

[0007] Furthermore, the signal cable is placed inside the coil. Placing the signal cable inside the coil saves space occupied by the endoscope and facilitates its use and storage.

[0008] In this invention, the unclogging head includes a connecting rod, a steel chain, and two ends; both ends of the connecting rod are connected to one of the ends, and both ends of the steel chain are connected to one of the ends.

[0009] Furthermore, the steel chain is composed of multiple interlocking links.

[0010] In this invention, the coil includes a steel core and an outer sheath covering the steel core, allowing the steel core to move within the outer sheath. The outer sheath protects the steel core, making it less prone to breakage, and also provides excellent protection during pipe bends, facilitating unblocking.

[0011] Furthermore, the motor is connected to the claw disk for transmission, and the claw disk is fixedly connected to the steel core inside the coil, so that the motor drives the steel core inside the coil to rotate through the claw disk transmission.

[0012] In this invention, the unblocking mechanism further includes a limiter, which is sleeved around the coil to limit the coil's movement range. Using the limiter prevents the coil from winding around and makes it less prone to wire slippage or detachment.

[0013] Furthermore, the limiter includes a main body and a positioning buckle; the main body has a channel for the cable to pass through; the positioning buckle is located inside the main body and has a limiting groove; a positioning block is fixed to the outer sheath of the coil, and the coil achieves the limiter's restriction of the outer sheath by cooperating with the positioning block and the limiting groove. With this configuration, the positioning block of the cable is directionally engaged in the limiting groove, which can limit the outer sheath of the coil during unblocking, allowing the steel core to rotate while the outer sheath remains stationary, preventing the cable's outer sheath and steel core from rotating simultaneously and causing injury to the operator's hand.

[0014] Furthermore, the channel within the main body is a transitional channel with a height difference, where the wire exit height at the end of the channel near the motor is higher than the wire exit height at the end near the unclogging head. Considering the vertical arrangement of the coils, this design reduces stress when pulling out the coils, thereby increasing product lifespan and ease of use.

[0015] In this invention, a conductive slip ring assembly is fixed on the axis of the second turntable, and the conductive slip ring assembly is connected to the motor of the unblocking mechanism via a power supply line. By using the conductive slip ring assembly, the power supply line from the turntable axis supplies power to the unblocking mechanism, preventing the power supply line from breaking due to prolonged rotation and extending the service life of the power supply line.

[0016] Furthermore, the conductive slip ring assembly includes a chassis, a housing, a cover, a first conductive slip ring, and a connecting shaft. The housing is fixed to the chassis, and the first conductive slip ring is disposed inside the housing and fixed to the connecting shaft. The two ends of the connecting shaft are fixed by bearings. The cover is fixed to the second turntable and rotates together with the second turntable. The first conductive slip ring is connected to the power cord, and the cover, fixed to the turntable, rotates continuously with it. This alternating static and dynamic structural design satisfies the function of energizing the coil without affecting signal and circuit conduction.

[0017] Furthermore, the bottom of the connecting shaft is fixed to the first bearing, the top of the connecting shaft is fixed to the coil isolation block, and the coil isolation block is fixed on the second bearing; the coil isolation block has a through hole in the middle for the power line to pass through.

[0018] Furthermore, the second bearing is fixed to the housing by a bearing retaining block.

[0019] Furthermore, the cover is fixed to the second bearing, and a cable outlet base is fixedly connected to the cover, which is fixed to the third bearing.

[0020] In this invention, a sealing ring is provided between the chassis and the housing, a sealing ring is provided between the housing and the bearing fixing block, a sealing ring is provided between the bearing fixing block and the faceplate, and a sealing ring is provided between the faceplate and the cable outlet base. By setting multiple sealing rings, precise waterproofing is achieved for the first conductive slip ring and the circuit section.

[0021] In this invention, the unblocking mechanism also includes a debugger, which is equipped with a start button and a self-locking switch button. The debugger is used to control the motor to start and run.

[0022] Furthermore, the debugger is located inside the pedal and is detachably connected to the pedal. The start button of the debugger is controlled via the pedal, making operation effortless and convenient.

[0023] In this invention, the main control box is provided with a host port; the signal cable is connected to the main control box through the host port.

[0024] The present invention can also be improved in the following way: the signal cable is electrically connected to the main control box through a rotating circuit disk.

[0025] Furthermore, the rotating circuit disk includes a base, a first PCB board, a second PCB board, a positioning component, a fourth bearing, a second conductive slip ring, a pressure plate, and a rotating outer cover; the base is fixedly connected to the rotating outer cover, a fixed shaft is provided inside the base, and the first PCB board is fixed on the base; the positioning component is sleeved on the fixed shaft, and the bottom of the positioning component is connected to the second PCB board, which is in contact with the first PCB board; the fourth bearing is sleeved on the fixed shaft and fixed inside the positioning component by the pressure plate; the second conductive slip ring is fixed on the pressure plate and is electrically connected to the first PCB board.

[0026] Furthermore, the base is provided with a power strip interface, which is electrically connected to the first PCB board.

[0027] Furthermore, the rotating circuit disk also includes a top cover and a third PCB board; the top cover is fixed on the rotating outer cover, the third PCB board is fixed inside the top cover, the third PCB board is electrically connected to the second conductive slip ring, and is also electrically connected to an external signal cable.

[0028] Furthermore, the top cover is also provided with a cable outlet cover.

[0029] In this invention, the rotating circuit disk is fixed on the first turntable.

[0030] Furthermore, the rotating circuit disk is connected to the conductive slip ring assembly via a metal sleeve, so that the first and second turntables are on the same axis.

[0031] The present invention can also be improved in the following ways: the signal cable is provided with a braking mechanism, the braking mechanism including a brake clamping member, a connector and a cable fixing member; one end of the connector is connected to the brake clamping member, and the other end is fixedly connected to the base; the cable fixing member is connected to the base.

[0032] Furthermore, the brake clamping component is provided with a through hole for the signal cable to pass through, and the brake clamping component is sleeved on the rotating circuit disk, with one end of it fixedly connected to the rotating circuit disk.

[0033] Furthermore, the cable fixing component is provided with a cable limiting hole. The cable limiting hole effectively prevents the cable from snapping into a coil.

[0034] In this invention, the main control box also includes a toolbox, which comprises a waterproof housing and a leak-proof housing. This design allows for the separation of wet and dry tools and accessories based on whether they require waterproofing.

[0035] The invention can be further improved by including a main frame, wherein the main control box is fixed to the main frame by a bracket.

[0036] Furthermore, the first turntable is fixed to the main frame by the first steel plate, and the second turntable is fixed to the main frame by the second steel plate.

[0037] Furthermore, the main frame is provided with a guide ring, through which the signal cable or coil passes. This arrangement facilitates the deployment and retraction of the signal cable and coil.

[0038] Furthermore, the main frame is equipped with rollers and tie rods.

[0039] The present invention has the following beneficial effects:

[0040] (1) The pipe endoscope of the present invention has a dredging mechanism, which can dredge blocked pipes. It integrates pipe detection and pipe dredging functions, which brings great convenience, improves work efficiency and is easy to use.

[0041] (2) The endoscope signal cable of the present invention is housed inside the coil of the unblocking mechanism. It is small in size, has high space utilization, and will not affect the operation of each process. It can meet the needs of different work scenarios, save costs, and improve work efficiency.

[0042] (3) The present invention connects the cable and the main control box by rotating the circuit disk. During the cable pulling process, the signal can be transmitted to the main control box without interruption, and the stability is good. The signal cable is equipped with a braking mechanism, which has a simple structure, occupies little space, can prevent the signal cable from snapping, and at the same time plays the role of a positioning line, making the cable winding neater and more convenient. Attached Figure Description

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0044] Figure 1 This is a schematic diagram of the overall structure of the endoscope for the pipeline of the present invention;

[0045] Figure 2 This is a front view of the endoscope for the pipeline of the present invention;

[0046] Figure 3 This is a rear view of the endoscope for the pipeline of the present invention;

[0047] Figure 4 This is a left view of the endoscope of the present invention;

[0048] Figure 5 This is a right view of the endoscope of the present invention;

[0049] Figure 6 This is a top view of the endoscope for the pipeline of the present invention;

[0050] Figure 7 This is a bottom view of the endoscope for the pipeline of the present invention;

[0051] Figure 8 This is a structural diagram showing the connection between the first turntable, the second turntable, and the main frame of the present invention.

[0052] Figure 9 for Figure 8 Exploded view;

[0053] Figure 10 for Figure 8 Cross-sectional view;

[0054] Figure 11 This is a schematic diagram of the overall structure of the unblocking mechanism of the present invention;

[0055] Figure 12 This is a schematic diagram of the internal structure of the limiter of the present invention;

[0056] Figure 13 This is a schematic diagram of the overall structure of the conductive slip ring assembly of the present invention;

[0057] Figure 14 for Figure 13 Cross-sectional view;

[0058] Figure 15 for Figure 13 Exploded view;

[0059] Figure 16 This is a schematic diagram of the mating structure of the pedal and the debugger of the present invention;

[0060] Figure 17 for Figure 16 Internal structure diagram;

[0061] Figure 18 This is a schematic diagram of the connection structure between the first turntable and the rotating circuit disk of the present invention;

[0062] Figure 19 This is a schematic diagram of the overall structure of the rotating circuit disk of the present invention;

[0063] Figure 20 for Figure 19 Exploded view;

[0064] The following are labeled in the attached diagram: 1. Main control box; 2. Main frame; 3. Coil; 4. Signal cable; 5. First turntable; 6. Second turntable; 7. Conductive slip ring assembly; 8. Rotary circuit disk; 9. Braking mechanism; 10. Camera; 11. Motor; 12. Unclogging head; 13. Limit switch; 14. Debugger; 15. Pedal; 17. Metal sleeve; 18. System panel assembly; 101. Main unit port; 102. Toolbox; 201. Bracket; 202. First steel plate; 203. Second steel plate; 204. Guide ring; 205. Roller; 206. Pull rod; 301. Steel core; 302. Outer sheath; 701. Chassis; 702. Housing; 703. Face cover; 704. First conductive slip ring; 705. Connecting shaft; 706. First bearing; 707. Second bearing; 708. Third bearing; 709. Coil isolation block; 710. Bearing fixing component; 711. Outlet base; 712. Outlet pressure block; 713. Sealing ring; 801. Base; 802. First PCB board; 803. Third PCB board; 804. Positioning component; 805. Fourth bearing; 806. Second conductive slip ring; 807. Pressure plate; 808. Rotating outer cover; 809. Top cover; 810. Outlet cover; 811. Plug-in cable interface; 812. Fixed shaft; 901. Brake clamping component; 902. Connecting component; 903. Cable fastener; 904. Cable limiting hole; 1201. Steel chain; 1202. Connecting rod; 1203. End; 1301. Main body; 1302. Positioning buckle; 1303. Channel; 1304. Limiting groove; 1305. Positioning block; 1401. Start button; 1402. Self-locking switch button; 1501. Front shell; 1502. Bottom shell; 1503. Crossbar. Detailed Implementation

[0065] like Figure 1-20 The pipe endoscope shown includes a main control box 1, a main frame 2, a signal cable 4, a first turntable 5, a camera 10, and a dredging mechanism.

[0066] The unblocking mechanism includes a coil 3, a second turntable 6, a motor 11, and an unblocking head 12. One end of the coil 3 is connected to the motor 11, and the other end of the coil 3 is connected to the unblocking head 12. The coil 3 is fixed on the second turntable 6.

[0067] Specifically, the unblocking head 12 includes a connecting rod 1202, a steel chain 1201, and two ends 1203. Both ends of the connecting rod 1202 are connected to one of the ends 1203, and both ends of the steel chain 1201 are connected to one end 1203. The steel chain 1201 is composed of multiple interlocking rings. This interlocking structure provides strong tensile strength and specific back-and-forth extension strength, making it convenient to use in confined spaces. The coil 3 includes a steel core 301 and an outer sheath 302 sleeved around the steel core 301, allowing the steel core 301 to move within the outer sheath 302. In this embodiment, the steel core 301 is formed by multiple strands of steel wire, and the outer sheath 302 protects the steel core 301, making it less prone to breakage and providing good pipe bending characteristics, facilitating unblocking, and also protecting the hands. The motor 11 is connected to the claw plate 16 for transmission. The claw plate 16 is fixedly connected to the steel core 301 inside the coil 3, so that the motor 11 drives the steel core 301 inside the coil 3 to rotate through the claw plate 16. At this time, the steel chain 1201 structure of the unblocking head 12 powerfully impacts and agitates the large blockage in the pipe, causing it to fall off and achieve the purpose of unblocking the pipe.

[0068] The unblocking mechanism also includes a limiter 13, which is sleeved around the coil 3 to limit the movement range of the coil 3. Using the limiter 13 prevents the coil 3 from winding and makes it less prone to wire leakage or falling off.

[0069] Specifically, the limiter 13 includes a main body 1301 and a positioning buckle 1302; the main body 1301 has a channel 1303 for the cable to pass through; the positioning buckle 1302 is located inside the main body 1301 and has a limiting groove 1304; correspondingly, a positioning block 1305 is fixed to the outer sheath 302 of the coil 3, and the coil 3 is limited by the limiter 13 on the outer sheath 302 through the cooperation of the positioning block 1305 and the limiting groove 1304. With this configuration, the limiter 13 has a unidirectional movement restriction function on the coil 3.

[0070] Considering the vertical arrangement of coil 3, in order to reduce stress when pulling out coil 3, increase product lifespan and ease of use, the channel 1303 inside the main body 1301 is a transition channel 1303 with a height difference. The wire exit height at the end of channel 1303 near motor 11 is higher than the wire exit height at the end of channel 1303 near unclogging head 12.

[0071] To facilitate control of the motor 11, the unblocking mechanism of this invention also includes a debugger 14 and a system panel assembly 18. The debugger 14 is equipped with a start button 1401 and a self-locking switch button 1402. The debugger 14 receives power signals to control the motor 11 to start and operate. The self-locking switch button 1402 can keep the circuit continuously conducting, ensuring the motor 11 is always in operation, facilitating continuous use and preventing premature shutdown due to accidental pressing of the start button 1401. The debugger 14 can be operated manually or installed inside the pedal 15. The debugger 14 is detachably connected to the pedal 15 and can be removed for control via the pedal 15, making it more convenient and effortless. The pedal 15 includes a front shell 1501, a bottom shell 1502, and a crossbar 1503. The front shell 1501 and the bottom shell 1502 are hinged and connected by a spring. The crossbar 1503 is fixed to the front shell 1501. The speed controller is fixed inside the bottom housing 1502. The start button 1401 is positioned opposite the crossbar 1503. Pressing down the start button 1401 via the crossbar 1503 causes the motor 11 to operate. The system panel assembly 18 is used to adjust whether the motor 11 rotates clockwise or counterclockwise, thereby driving the steel core 301 inside the coil 3 to rotate, and can also adjust the speed of the motor 11.

[0072] This invention, through the aforementioned structure and the connection methods between them, enables the clearing of blockages within pipes. The following further explains the connection relationship and improvements between the clearing mechanism and other components of the pipe endoscope.

[0073] In this invention, the main control box 1 is fixed to the main frame 2 by a bracket 201, and a toolbox 102 is provided outside the main control box 1. The toolbox 102 includes a waterproof box and a leak-proof box, which realizes the dry and wet separation of different tools and accessories according to whether they need to be waterproof. The main control box 1 is also provided with multiple host ports 101, one end of which is connected to a signal cable 4, and the other end of the signal cable 4 is connected to a camera 10.

[0074] A first steel plate 202 and a second steel plate 203 are fixed on the main frame 2. A first turntable 5 is fixed on the second steel plate 203; a rotating circuit disk 8 is fixedly connected to the first turntable 5. One end of the signal cable 4 is connected to the main control box 1 through the rotating circuit disk 8, and the other end is connected to a camera 10. A motor 11 is fixed on the first steel plate 202, and a limiter 13 is also fixed on the first steel plate 202. A second turntable 6 is fixed on the first steel plate 202. A conductive slip ring assembly 7 is connected to the second turntable 6. The motor 1 is connected to the conductive slip ring assembly 7 through a power line, and the conductive slip ring assembly 7 is connected to the main control box 1 through a power line. The conductive slip ring assembly 7 enables the main control box 1 to supply power to the motor 11 in the unblocking mechanism. A coil 3 is fixed on the second turntable 6, and the signal cable 4 is fixed on the first turntable 5 and placed inside the coil 3. This greatly reduces the space occupied by the entire endoscope and facilitates its use and storage. To ensure that the rotation of the first turntable 5 and the second turntable 6 does not interfere with each other and facilitates cable output, the first turntable 5 and the second turntable 6 have the same axis. The first turntable 5 and the second turntable 6 are also connected by a metal sleeve 17 to ensure their concentricity, while also improving overall stability and extending service life.

[0075] In this embodiment, the conductive slip ring assembly 7 includes a chassis 701, a housing 702, a cover 703, a first conductive slip ring 704, and a connecting shaft 705. The housing 702 is fixed to the chassis 701. The first conductive slip ring 704 is disposed inside the housing 702 and fixed to the connecting shaft 705. Both ends of the connecting shaft 705 are fixed by bearings. The cover 703 is fixed to the second turntable 6 and rotates with the second turntable 6. Specifically, the bottom of the connecting shaft 705 is fixed to the first bearing 706, and the top of the connecting shaft 705 is fixed to the coil isolation block 709. The coil isolation block 709 is fixed to the second bearing 707. The coil isolation block 709 has a through hole in the middle for the power cord to pass through. The second bearing 707 is fixed to the housing 702 by a bearing fixing block 710. A cable outlet base 711 is fixedly connected to the cover 703. A cable outlet pressure block 712 is provided on the cable outlet base 711. The cable outlet base 711 is fixed on the third bearing 708, and the third bearing 708 is fixedly connected to the metal sleeve 17. The top of the first conductive slip ring 704 is connected to the power cord of the motor 11, and the bottom of the first conductive slip ring 704 is connected to the power cord of the main control box 1.

[0076] To achieve precise waterproofing of the first conductive slip ring 704 and the circuit components, the conductive slip ring assembly 7 in this embodiment is equipped with multiple sealing rings 713. Specifically, a sealing ring 713 is provided between the chassis 701 and the housing 702, between the housing 702 and the bearing fixing block 10, between the bearing fixing block 10 and the face shell 1501, and between the face shell 1501 and the cable outlet base 711.

[0077] In this embodiment, the rotating circuit disk 8 includes a base 801, a first PCB board 802, a second PCB board, a third PCB board 803, a positioning component 804, a fourth bearing 805, a second conductive slip ring 806, a pressure plate 807, a rotating outer cover 808, a top cover 809, and a cable outlet cover 810. The base 801 is fixedly connected to the rotating outer cover 808. A fixed shaft 812 is provided inside the base 801, and the first PCB board 802 is fixed on the base 801. A power strip interface 811 is provided outside the base 801, and the power strip interface 811 is electrically connected to the first PCB board 802. The rotating circuit disk 8 is connected to the host port 101 of the main control box 1 through the power strip interface 811. A positioning component 804 is sleeved on a fixed shaft 812, located above the first PCB board 802. A second PCB board is connected to the bottom of the positioning component 804, and the second PCB board is in contact with the first PCB board 802. A fourth bearing 805 is sleeved on the fixed shaft 812 and fixed inside the positioning component 804 by a pressure plate 807. A second conductive slip ring 806 is fixed on the pressure plate 807 and is electrically connected to the first PCB board 802. A top cover 809 is fixed on a rotating outer cover 808, and a cable outlet cover 810 is connected to the top cover 809. The cable outlet cover 810 is connected to a metal sleeve 17. A third PCB board 803 is fixed inside the top cover 809. The third PCB board 803 is electrically connected to the second conductive slip ring 806 and also electrically connected to an external signal cable 4. The rotating circuit disk 8 is installed concentrically on the first turntable 5, allowing them to rotate synchronously and ensuring uninterrupted signal transmission to the main control box 1. Simultaneously, the rotating circuit disk 8 connects the signal cable 4 and the main control box 1 without occupying additional space, thus improving space utilization. The first turntable 5 and the second turntable 6 are connected to the metal sleeve 17 via the third bearing 708 in the conductive slip ring assembly 7 fixed on the first turntable 5. The top cover 809 of the rotating circuit disk 8 fixed on the second turntable 6 is connected to the metal sleeve 17, achieving a coaxial connection between the first turntable 5 and the second turntable 6.

[0078] To facilitate cable reeling in on the first turntable 5 and prevent cable snapping, the signal cable 4 in this invention is equipped with a braking mechanism 9. The braking mechanism 9 includes a brake clamping member 901, a connector 902, and a cable fixing member 903. The brake clamping member 901 is arc-shaped and has a through hole for the signal cable 4 to pass through. The brake clamping member 901 is fitted onto the rotating outer cover 808 of the rotating circuit disk 8, with one end fixedly connected to the base 801 of the rotating circuit disk 8, and the other end connected to the connector 902. One end of the connector 902 is connected to the brake clamping member 901, and the other end is connected to the base 801. The cable fixing member 903 has a cable limiting hole 904. Since the coil 3 is usually made of a large-diameter wire with high elasticity, it is prone to automatically snapping out; the braking mechanism 9 can effectively prevent the wire from snapping out. Furthermore, during cable reeling, the braking mechanism 9 acts as a positioning line, ensuring that the reeled-in wire is neat.

[0079] In this invention, the main frame 2 is also equipped with rollers 205 and a pull rod 206, which facilitates lifting and gripping during operation and movement and transportation of the equipment. A guide ring 204 is provided on the main frame 2, through which the signal cable 4 or coil 3 passes. This arrangement facilitates the retraction and extension of the signal cable 4 and coil 3.

[0080] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A duct endoscope, comprising a main control box (1), a signal cable (4), a first turntable (5), and a camera (10), wherein one end of the signal cable (4) is connected to the main control box (1), the other end of the signal cable (4) is connected to the camera (10), and the signal cable (4) is fixed on the first turntable (5), characterized in that, It also includes a dredging mechanism, which includes a dredging head (12), a coil (3), a second turntable (6), and a motor (11). One end of the coil (3) is connected to the motor (11) for transmission, and the other end of the coil (3) is connected to the dredging head (12). The coil (3) is fixed on the second turntable (6). The coil (3) includes a steel core (301) and an outer sheath (302) sleeved on the steel core (301), so that the steel core (301) can move within the outer sheath (302). The motor (11) is connected to the claw plate (16) for transmission, and the claw plate (16) is fixedly connected to the steel core (301) inside the coil (3), so that the motor (11) drives the steel core (301) inside the coil (3) to rotate through the claw plate (16). The unblocking mechanism also includes a limiter (13), which is sleeved on the outside of the coil (3) to limit the movement range of the coil (3); the limiter (13) includes a main body (1301) and a positioning buckle (1302); the main body (1301) is provided with a channel (1303) for the cable to pass through; the positioning buckle (1302) is located inside the main body (1301) and has a limiting groove (1304); the outer sheath (302) of the coil (3) is fixed with a positioning block (1305), and the coil (3) is positioned by the limiter (13) limiting the outer sheath (302) of the coil (3) through the cooperation of the positioning block (1305) and the limiting groove (1304).

2. The duct endoscope according to claim 1, characterized in that, The signal cable (4) is placed inside the coil (3).

3. The duct endoscope according to claim 1, characterized in that, The unblocking head (12) includes a connecting rod (1202), a steel chain (1201) and two ends (1203); the two ends of the connecting rod (1202) are respectively connected to one of the ends (1203), and the two ends of the steel chain (1201) are respectively connected to one of the ends (1203).

4. The duct endoscope according to any one of claims 1-3, characterized in that, A conductive slip ring assembly (7) is fixed on the axis of the second turntable (6). The conductive slip ring assembly (7) is connected to the motor (11) of the unblocking mechanism via a power line. The conductive slip ring assembly (7) includes a chassis (701), a housing (702), a cover (703), a first conductive slip ring (704), and a connecting shaft (705). The housing (702) is fixed on the chassis (701). The first conductive slip ring (704) is located inside the housing (702) and fixed on the connecting shaft (705). The two ends of the connecting shaft (705) are fixed by bearings. The cover (703) is fixed on the second turntable (6) and rotates with the second turntable (6).

5. The duct endoscope according to claim 4, characterized in that, The signal cable (4) is electrically connected to the main control box (1) via a rotating circuit disk (8); the rotating circuit disk (8) includes a base (801), a first PCB board (802), a second PCB board, a positioning component (804), a fourth bearing (805), a second conductive slip ring (806), a pressure plate (807), and a rotating outer cover (808); the base (801) is fixedly connected to the rotating outer cover (808), a fixed shaft (812) is provided inside the base (801), and the first PCB board (802) is fixed on the base (801). The positioning component (804) is sleeved on the fixed shaft (812), and the bottom of the positioning component (804) is connected to a second PCB board, which is in contact with the first PCB board (802); the fourth bearing (805) is sleeved on the fixed shaft (812) and fixed inside the positioning component (804) by the pressure plate (807); the second conductive slip ring (806) is fixed on the pressure plate (807) and is electrically connected to the first PCB board (802).

6. The duct endoscope according to claim 5, characterized in that, The rotating circuit disk (8) is fixed on the first turntable (5); the rotating circuit disk (8) is connected to the conductive slip ring assembly (7) through a metal sleeve (17), so that the first turntable (5) and the second turntable (6) are on the same axis.

7. The duct endoscope according to claim 5, characterized in that, The signal cable (4) is provided with a braking mechanism (9), which includes a brake clamping member (901), a connector (902) and a cable fixing member (903); one end of the connector (902) is connected to the brake clamping member (901), and the other end is fixedly connected to the base (801); the cable fixing member (903) is connected to the base (801).

Images