A high pressure resistant underwater ultrasonic detection device

By introducing obstacle-blocking mechanisms and guide mechanisms into the underwater ultrasonic detection device, the difficulty of moving and winding problems of the device in complex underwater terrain is solved, and higher detection accuracy and high-pressure resistance of the device are achieved.

CN119283996BActive Publication Date: 2025-03-18KUNMING 705 TECH DEV CO LTD
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Patent Information

Application Number
CN202411796479.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-03-18
Estimated Expiration
2044-12-09

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Abstract

The present invention discloses a high-pressure resistant underwater ultrasonic detection device, which relates to the field of ultrasonic detection technology, including a detector body, and an ultrasonic probe fixedly installed at the center of the top of the detector body; further comprising: an obstacle crossing mechanism is provided on the bottom surface of the detector body, and obstacle crossing flip plates are elastically rotatably provided at both the front and rear ends of the protection platform; wherein a drainage mechanism is provided below the detector body. The high-pressure resistant underwater ultrasonic detection device realizes the detection of the underwater environment through the ultrasonic probe above the detector body and the monitor in front, while the drainage brush rod assists in removing the entanglement of aquatic plants and animals on the detector body, and the detector inside the detector body is controlled by the induction switch to perform detection and monitoring work after dust removal and cleaning, and at the same time, the obstacle crossing mechanism assists the detector body to move, improves its driving passability, and avoids collisions that affect the high-pressure resistance effect of the detector body.
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Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic detection, in particular to a high-pressure resistant underwater ultrasonic detection device. Background Art

[0002] Ultrasonic detection refers to a detection method achieved through ultrasonic technology, which is mainly achieved by using sound waves with a frequency higher than the human hearing frequency. Ultrasonic detection can obtain information about the internal structure of the object being detected without destroying it. In the case of poor underwater visual environment, ultrasonic detectors can be used to generate high-definition images, which is suitable for precision detection.

[0003] The invention with publication number CN109239716A discloses an underwater detection device, which is designed with a heavy block that can make the detection device sink to the bottom of the water quickly. At the same time, heavy blocks of different weights are configured through a threaded structure to facilitate use in various environments; multiple floating belts are provided, and each floating belt is provided with an ultrasonic transmitting device to facilitate detection in multiple directions.

[0004] The invention with publication number CN107942334A discloses an ultrasonic underwater positioning detection mechanism, wherein an ultrasonic transmitting probe is arranged at the front end of the tube body; and further comprises a rotating assembly driving the laser transmitting probe to realize 180° rotation, wherein the rotating assembly is arranged at the upper end of the tube body. By implementing this technical solution, the detection position can be accurately positioned through the flexible rotation of the laser transmitting probe, thereby achieving higher detection accuracy.

[0005] However, the underwater ultrasonic detection device disclosed above still has the following problems during actual use: although underwater ultrasonic detection is achieved through an integrated device, such detection devices are difficult to move in relatively complex underwater terrain and are prone to collision and damage, causing underwater pressure to destroy the detection device. At the same time, plants and animals in the underwater environment are relatively complex and are easily entangled and adsorbed on the detection device, affecting the accuracy of the detection data.

[0006] Therefore, we propose a high-pressure resistant underwater ultrasonic detection device to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a high-pressure resistant underwater ultrasonic detection device to solve the problem that the existing underwater ultrasonic detection is achieved through an integrated device, but such detection devices are difficult to move in the relatively complex underwater terrain and are prone to collision and damage, resulting in the underwater pressure destroying the detection device. At the same time, the plants and animals in the underwater environment are relatively complex and are easily entangled and adsorbed on the detection device, affecting the accuracy of the detection data.

[0008] To achieve the above object, the present invention provides the following technical solution: a high-pressure resistant underwater ultrasonic detection device, comprising a detector body, and an ultrasonic probe fixedly installed at the center of the top of the detector body; and further comprising:

[0009] The bottom surface of the detector body is provided with an obstacle-crossing mechanism, and the obstacle-crossing mechanism includes a protection platform, and the protection platform is installed on the bottom surface of the detector body, and obstacle-crossing flip plates are elastically rotatably provided at both the front and rear ends of the protection platform;

[0010] Wherein, a drainage mechanism is arranged below the detector body, and the drainage mechanism includes a drainage box, and driving drives are arranged on both left and right sides of the rear of the drainage box;

[0011] The obstacle-crossing mechanism includes an obstacle-crossing rotating wheel, and the obstacle-crossing rotating wheel is installed inside the bottom end of the obstacle-crossing flip plate by a driving motor, and after the obstacle-crossing flip plate and the obstacle-crossing rotating wheel rotate to contact the underwater obstacle, the auxiliary detector body is freed from being stuck to avoid movement obstruction;

[0012] The guide gear included in the diversion mechanism is rotatably arranged on the left and right sides of the top surface of the protection platform through a torsion spring, and the rotating shaft of the symmetrically arranged guide gear is fixedly connected to the rear end of the flip resistor, and the front end of the symmetrically arranged flip resistor is fitted on the outer wall of the obstacle flip plate, and the obstacle flip plate is driven by the rotation of the flip resistor.

[0013] Preferably, the obstacle crossing mechanism includes a supporting frame, and the top end of the supporting frame is slidably connected to the bottom surface of the protective platform through a resistance damper, and the left and right sides of the bottom end of the supporting frame are provided with travel driving wheels rotatably provided through bearings, and the left and right sides of the outer end of the supporting frame are provided with obstacle crossing travel wheels rotatably provided through bearings.

[0014] Preferably, the obstacle-crossing mechanism comprises a running track, and the running track is meshedly connected to the outer walls of the symmetrically arranged running drive wheels and the obstacle-crossing running wheels, and the bottom surface of the outer end of the running track is an inclined structure.

[0015] Preferably, the travel driver included in the drainage mechanism is located on the left and right sides behind the bottom surface of the detector body, and the interior of the symmetrically arranged travel driver is provided with a travel impeller that rotates to assist the movement of the detector body.

[0016] Preferably, the drainage mechanism includes a driving shaft, and the driving shaft is rotatably arranged on the left and right sides of the drainage box through bearings, and the symmetrically arranged driving shaft is fixedly connected to the travel impeller inside the travel driver.

[0017] Preferably, the drainage mechanism includes a reciprocating threaded rod, and the reciprocating threaded rod is rotatably arranged in the front middle part of the drainage box through a bearing, and positioning brackets are fixedly arranged at both ends of the left and right ends of the reciprocating threaded rod, and an induction switch is fixedly arranged on the top surface of the positioning bracket, and the top end of the induction switch is fixedly connected to the inside of the detector body.

[0018] Preferably, the drainage mechanism includes a drainage brush rod, and the drainage brush rod is threadedly connected to the left and right outer walls of the reciprocating threaded rod, and the rotation of the reciprocating threaded rod drives the drainage brush rod to reciprocate in the left and right directions, so that intermittent contact is made between the drainage brush rod and the sensing switch, so that the sensing switch controls the detection element installed inside the detector body, thereby preventing the entangled aquatic plant debris from affecting the monitoring operation of the monitoring detector.

[0019] Preferably, the front end of the reciprocating threaded rod included in the drainage mechanism is meshedly connected to the front end of the driving shaft through a bevel gear set, and incomplete gears are fixedly provided on the left and right outer walls of the reciprocating threaded rod, and a guide gear is meshedly provided below the incomplete gear.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the high-pressure resistant underwater ultrasonic detection device realizes the detection of the underwater environment through the ultrasonic probe above the detector body and the monitor in front, and the brush rod assists in removing the entanglement of aquatic plants and animals on the detector body, and the detector inside the detector body is controlled by the induction switch to perform detection and monitoring work after dust removal and cleaning, and at the same time, the obstacle crossing mechanism assists the detector body to move, improves its driving passability, and avoids collisions that affect the high-pressure resistance effect of the detector body. The specific contents are as follows:

[0021] 1. The driving drive included in the drainage mechanism works, and the driving impeller inside it rotates through the driving shaft inside the drainage box, so that the driving drive assists the detector body to move. At the same time, the ultrasonic probe arranged on the top surface of the detector body sends and receives ultrasonic waves, and the internal processing chip of the detector body realizes data processing to draw an image of the underwater environment.

[0022] The driving shaft drives the reciprocating threaded rod to rotate through the bevel gear group, driving the drainage brush rods on the left and right outer walls to reciprocate in the left and right directions. The drainage brush rods fit the front end of the detector body to clean the aquatic plants and debris entangled in the front end of the detector body, so as to improve the visual range of the monitoring probe at the front end of the detector body and improve the efficiency of the detector body during operation.

[0023] 2. The brush rod moves back and forth, and senses the induction switch above the positioning bracket after moving to it, so that the induction switch controls the monitor in front of the detector body to perform monitoring and detection operations after decontamination and cleaning.

[0024] 3. The driving wheels and obstacle-crossing wheels drive the driving tracks to rotate. The driving tracks assist the detector body to move underwater. The inclined obstacle-crossing wheels and driving tracks can assist the detector body to climb after contacting obstacles of a certain height. The supporting frame arranged on the bottom of the protection platform is connected through a friction damper to improve the stability of the detector body during movement.

[0025] The rotating reciprocating threaded rod of the guidance mechanism drives the incomplete gear on the outer wall to rotate, and drives the flip resistor to rotate after engaging the guide gear. The front end of the flip resistor drives the obstacle-crossing flip plate and the obstacle-crossing rotating wheel to flip backwards, so that the obstacle-crossing flip plate can be reset to assist the detector body for subsequent driving to improve its passability. When there are no obstacles, the obstacle-crossing flip plate flips and does not contact the underwater ground, so as to avoid affecting the normal movement of the detector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the initial state structure of the obstacle-crossing rotating wheel of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation structure of the travel drive of the present invention;

[0030] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the brush rod of the present invention;

[0032] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0033] Figure 8 This is a schematic diagram of the support frame installation structure of the present invention;

[0034] Fig. 9 It is a schematic diagram of the installation structure of the brush rod and the detector body of the present invention.

[0035] In the figure: 1. Detector body; 2. Ultrasonic probe; 3. Protection platform; 4. Obstacle-crossing flip plate; 5. Guide box; 6. Travel drive; 7. Obstacle-crossing rotating wheel; 8. Support chassis; 9. Travel drive wheel; 10. Obstacle-crossing travel wheel; 11. Travel track; 12. Travel impeller; 13. Drive shaft; 14. Reciprocating threaded rod; 15. Positioning bracket; 16. Induction switch; 17. Guide brush rod; 18. Bevel gear group; 19. Incomplete gear; 20. Guide gear; 21. Flip resistor; 22. Rejection damper. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 9 , the present invention provides the following technical solutions:

[0038] Embodiment 1: In order to solve the problems of the existing detector body 1 during use and operation, this embodiment adopts the following technical scheme: a high-pressure resistant underwater ultrasonic detection device, including a detector body 1, and an ultrasonic probe 2 fixedly installed at the top center position of the detector body 1; a drainage mechanism is arranged below the detector body 1, and the drainage mechanism includes a drainage box 5, and a driving drive 6 is arranged on the left and right sides of the rear of the drainage box 5; the driving drive 6 included in the drainage mechanism is located on the left and right sides of the rear of the bottom surface of the detector body 1, and the interior of the symmetrically arranged driving drive 6 is provided with a driving impeller 12 through rotation, thereby assisting the movement of the detector body 1.

[0039] The drainage mechanism includes a driving shaft 13, and the driving shaft 13 is rotatably arranged on the left and right sides of the drainage box 5 through bearings, and the symmetrically arranged driving shaft 13 is fixedly connected to the travel impeller 12 inside the travel driver 6; the drainage mechanism includes a reciprocating threaded rod 14, and the reciprocating threaded rod 14 is rotatably arranged in the front middle part of the drainage box 5 through bearings, and positioning brackets 15 are fixedly arranged on both ends of the reciprocating threaded rod 14, and the top surface of the positioning bracket 15 is fixedly arranged with an induction switch 16, and the top end of the induction switch 16 is fixedly connected to the inside of the detector body 1.

[0040] The drainage mechanism includes a drainage brush rod 17, and the drainage brush rod 17 is threadedly connected to the left and right outer walls of the reciprocating threaded rod 14, and the rotation of the reciprocating threaded rod 14 drives the drainage brush rod 17 to reciprocate in the left and right directions, so that intermittent contact is made between the drainage brush rod 17 and the induction switch 16, so that the induction switch 16 controls the detection element installed inside the detector body 1, thereby preventing the entangled aquatic plant debris from affecting the monitoring operation of the monitoring detector.

[0041] The front end of the reciprocating threaded rod 14 included in the guidance mechanism is meshed and connected to the front end of the driving shaft 13 through a bevel gear set 18, and the left and right outer walls of the reciprocating threaded rod 14 are fixedly provided with incomplete gears 19, and a guide gear 20 is meshed and provided below the incomplete gear 19; the guide gear 20 included in the guidance mechanism is rotatably arranged on the left and right sides of the top surface of the protection platform 3 through a torsion spring, and the rotating shaft of the symmetrically arranged guide gear 20 is fixedly connected to the rear end of the flip resistor 21, and the front end of the symmetrically arranged flip resistor 21 is fitted on the outer wall of the obstacle overturning plate 4, and the obstacle overturning plate 4 is driven by the rotation of the flip resistor 21.

[0042] like Figure 6-Figure 9 As shown, after the detector body 1 is put into the water, it works through the travel driver 6 included in the drainage mechanism, and the travel impeller 12 arranged inside the travel driver 6 rotates through the driving shaft 13 inside the drainage box 5, so as to assist the detector body 1 to move through the travel driver 6. At the same time, the ultrasonic probe 2 arranged on the top surface of the detector body 1 sends and receives ultrasonic waves, and the internal processing chip of the detector body 1 realizes data processing to draw an image of the underwater environment.

[0043] Furthermore, the driving shaft 13 installed inside the drainage box 5 drives the reciprocating threaded rod 14 to rotate through the bevel gear group 18, so that the reciprocating threaded rod 14 drives the drainage brush rod 17 on the left and right outer walls to move back and forth in the left and right directions. At the same time, the drainage brush rod 17 fits the front end of the detector body 1 to clean the aquatic plants and debris entangled in the front end of the detector body 1, so as to improve the visual range of the monitoring probe at the front end of the detector body 1 and improve the efficiency of the detector body 1 during operation.

[0044] The brush rods 17 on the left and right sides of the front end of the detector body 1 move back and forth, and after moving to the induction switch 16 above the positioning bracket 15, they sense it, so that the induction switch 16 controls the monitoring detector installed inside the detector body 1 to operate after decontamination and cleaning, to avoid the entangled aquatic plant debris affecting the normal operation of the monitoring detector.

[0045] Embodiment 2: In order to solve the problems encountered by the existing detector body 1 during its use and operation, this embodiment adopts the following technical scheme: an obstacle crossing mechanism is provided on the bottom surface of the detector body 1, and the obstacle crossing mechanism includes a protective platform 3, and the protective platform 3 is installed on the bottom surface of the detector body 1, and obstacle crossing flip plates 4 are elastically rotatably provided at both the front and rear ends of the protective platform 3; the obstacle crossing mechanism includes an obstacle crossing rotating wheel 7, and the obstacle crossing rotating wheel 7 is rotatably installed inside the bottom end of the obstacle crossing flip plate 4 through a driving motor, and after the obstacle crossing flip plate 4 and the obstacle crossing rotating wheel 7 rotate to contact the underwater obstacle, the detector body 1 is assisted to get rid of the jam and avoid movement obstruction.

[0046] The obstacle overcoming mechanism includes a supporting frame 8, and the top end of the supporting frame 8 is slidably connected to the bottom surface of the protection platform 3 through a resistance damper 22, and the left and right sides of the bottom end of the supporting frame 8 are rotatably provided with travel drive wheels 9 through bearings, and the left and right sides of the outer end of the supporting frame 8 are rotatably provided with obstacle overcoming travel wheels 10 through bearings; the obstacle overcoming mechanism includes a travel track 11, and the travel track 11 is meshed and connected to the outer walls of the symmetrically arranged travel drive wheels 9 and the obstacle overcoming travel wheels 10, and the bottom surface of the outer end of the travel track 11 is an inclined structure.

[0047] like Figure 1-Figure 4 As shown, during the driving process, the detector body 1 is supported by the supporting frame 8 included in the obstacle crossing mechanism, and the driving wheels 9 and the obstacle crossing wheels 10 arranged on the outside of the supporting frame 8 drive the meshing traveling tracks 11 to rotate, so that the traveling tracks 11 can assist the detector body 1 to move underwater. At the same time, the obstacle crossing wheels 10 and the traveling tracks 11 with inclined structures can assist the detector body 1 to climb after contacting an obstacle of a certain height, and the supporting frame 8 arranged on the bottom surface of the protection platform 3 is connected via the resistance damper 22 to improve the stability of the detector body 1 during the moving process.

[0048] Furthermore, when the detector body 1 encounters a higher obstacle and cannot move during driving, the reciprocating threaded rod 14 rotating in the guiding mechanism drives the incomplete gear 19 on the outer wall to rotate, and drives the flip resistor 21 to rotate after engaging the guide gear 20, so that the front end of the flip resistor 21 drives the obstacle-crossing flip plate 4 and the obstacle-crossing rotating wheel 7 to flip backward, thereby driving the detector body 1 to be lifted upward to overcome the obstacle. When the guide gear 20 is engaged with the incomplete gear 19, the torsion spring drives the guide gear 20 and the flip resistor 21 to rotate upward, so that the obstacle-crossing flip plate 4 is reset to assist the detector body 1 in subsequent driving and improve its passability.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure resistant underwater ultrasonic detection device, comprising a detector body (1), and an ultrasonic probe (2) fixedly mounted at the center of the top of the detector body (1); It is characterized in that Also includes: The bottom surface of the detector body (1) is provided with an obstacle-crossing mechanism, and the obstacle-crossing mechanism includes a protection platform (3), and the protection platform (3) is mounted on the bottom surface of the detector body (1), and obstacle-crossing flip plates (4) are elastically rotatably provided at both the front and rear ends of the protection platform (3); A drainage mechanism is provided below the detector body (1), and the drainage mechanism includes a drainage box (5), and a travel drive (6) is provided on both left and right sides of the rear of the drainage box (5); The obstacle-crossing mechanism comprises an obstacle-crossing rotating wheel (7), and the obstacle-crossing rotating wheel (7) is installed inside the bottom end of the obstacle-crossing flip plate (4) by means of a driving motor, and after the obstacle-crossing flip plate (4) and the obstacle-crossing rotating wheel (7) rotate to contact the underwater obstacle, the auxiliary detector body (1) is freed from being stuck to avoid movement obstruction; The guide gear (20) included in the diversion mechanism is rotatably arranged on the left and right sides of the top surface of the protection platform (3) through a torsion spring, and the rotating shaft of the symmetrically arranged guide gear (20) is fixedly connected to the rear end of the flipping resistor (21), and the front end of the symmetrically arranged flipping resistor (21) is fitted on the outer wall of the obstacle-crossing flip plate (4), and the obstacle-crossing flip plate (4) is driven by the rotation of the flipping resistor (21); When the detector body (1) encounters a high obstacle during travel and cannot move, the reciprocating threaded rod (14) of the guiding mechanism rotates to drive the incomplete gear (19) on the outer wall to rotate, and after engaging the guide gear (20), drives the flipping resistor (21) to rotate, so that the front end of the flipping resistor (21) drives the obstacle-crossing flip plate (4) and the obstacle-crossing rotating wheel (7) to flip backward, thereby driving the detector body (1) to lift upward to cross the obstacle, and when the guide gear (20) is engaged with the incomplete gear (19), the torsion spring drives the guide gear (20) and the flipping resistor (21) to rotate upward, so that the obstacle-crossing flip plate (4) is reset to assist the detector body (1) in subsequent travel and improve its passability.

2. The high-pressure resistant underwater ultrasonic detection device according to claim 1, characterized in that: The obstacle-crossing mechanism comprises a supporting frame (8), wherein the top end of the supporting frame (8) is slidably connected to the bottom surface of the protection platform (3) via a resistance damper (22), and travel driving wheels (9) are rotatably provided on both left and right sides of the bottom end of the supporting frame (8) via bearings, and obstacle-crossing travel wheels (10) are rotatably provided on both left and right sides of the outer end of the supporting frame (8) via bearings.

3. The high-pressure resistant underwater ultrasonic detection device according to claim 2, characterized in that: The obstacle-crossing mechanism comprises a running track (11), and the running track (11) is meshedly connected to the outer walls of symmetrically arranged running drive wheels (9) and obstacle-crossing running wheels (10), and the bottom surface of the outer end of the running track (11) is in an inclined structure.

4. The high-pressure resistant underwater ultrasonic detection device according to claim 1, characterized in that: The driving drive (6) included in the drainage mechanism is located on the left and right sides behind the bottom surface of the detector body (1), and the interior of the symmetrically arranged driving drive (6) is provided with a driving impeller (12) which rotates to assist the detector body (1) in moving.

5. The high-pressure resistant underwater ultrasonic detection device according to claim 4, characterized in that: The drainage mechanism comprises a driving shaft (13), and the driving shaft (13) is rotatably arranged on the left and right sides of the drainage box (5) through bearings, and the symmetrically arranged driving shaft (13) is fixedly connected to the travel impeller (12) inside the travel driver (6).

6. The high-pressure resistant underwater ultrasonic detection device according to claim 5, characterized in that: The drainage mechanism comprises a reciprocating threaded rod (14), and the reciprocating threaded rod (14) is rotatably arranged in the front middle part of the drainage box (5) through a bearing, and positioning brackets (15) are fixedly arranged at both left and right ends of the reciprocating threaded rod (14), and a sensing switch (16) is fixedly arranged on the top surface of the positioning bracket (15), and the top end of the sensing switch (16) is fixedly connected to the inside of the detector body (1).

7. The high-pressure resistant underwater ultrasonic detection device according to claim 6, characterized in that: The drainage mechanism comprises a drainage brush rod (17), and the drainage brush rod (17) is threadedly connected to the left and right outer walls of the reciprocating threaded rod (14), and the rotation of the reciprocating threaded rod (14) drives the drainage brush rod (17) to reciprocate in the left and right directions, so that the drainage brush rod (17) and the inductive switch (16) are intermittently contacted, so that the inductive switch (16) controls the detection element installed inside the detector body (1) to perform detection after the cleaning and decontamination operation.

8. The high-pressure resistant underwater ultrasonic detection device according to claim 7, characterized in that: The front end of the reciprocating threaded rod (14) included in the drainage mechanism is meshedly connected to the front end of the driving shaft (13) via a bevel gear set (18), and incomplete gears (19) are fixedly provided on the left and right outer walls of the reciprocating threaded rod (14), and a guide gear (20) is meshedly provided below the incomplete gear (19).

Citation Information

Patent Citations

  • Ultrasonic underwater positioning detection mechanism

    CN107942334A

  • Underwater detection device

    CN109239716A

  • Moving robot and pawl and ratchet high-elasticity intermittent motion device thereof

    CN108313158A

  • Load-adjustable modular mobile electricity supplement vehicle

    CN114043922A

  • Crawler-type multifunctional unmanned detection robot

    CN117719282A