Mechanical arm for grabbing objects underwater
By employing a double-layer oil seal PTFE carbon fiber sealing ring and an integrated cable plug sealing structure in the underwater robotic arm, the problems of easy wear and high cost of existing underwater robotic arm seals are solved, achieving a low-cost and efficient sealing effect.
Patent Information
- Application Number
- CN202520330875.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing underwater robotic arms have complex sealing structures. Single-layer seals are prone to wear and tear, resulting in a high risk of leakage. Watertight joints are also costly and easily damaged, further increasing the risk of leakage.
It adopts a double-layer oil seal PTFE carbon fiber sealing ring and an integrated cable plug sealing method to replace the traditional single-layer seal and watertight joint. Combined with the design of servo motor, lead screw and push rod, it realizes the opening and closing movement of the gripper, reduces the risk of water leakage and simplifies the structure.
It effectively reduces the risk of water leakage in underwater robotic arms, simplifies the structure, reduces costs, and improves economic efficiency.
Smart Images
Figure CN223686810U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to underwater mechanical arm technical field, concretely is a kind of mechanical arm for underwater object grabbing. BACKGROUND
[0002] At present, the known underwater mechanical arm structure is complex, and the front push rod part of sealing structure mostly uses single layer sealing, and the tail part mostly uses sealing joint form, the front end is repeatedly rubbed to the wear of sealing element due to push rod movement, and the risk of water leakage is also greatly increased by using single layer sealing, and the tail end mostly uses watertight connector, which is high in cost, and the risk of water leakage is increased due to the need of pulling and inserting sealing joint, and the watertight connector is also expensive, therefore, we provide a kind of mechanical arm for underwater object grabbing. UTILITY MODEL CONTENTS
[0003] In view of the deficiencies of the prior art, the utility model provides a kind of mechanical arm for underwater object grabbing, to solve the problems raised in the above background art.
[0004] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of mechanical arm for underwater object grabbing, including shell, the inside of the shell is provided with motor base, the inside of the motor base is provided with servo motor, the output of the servo motor is provided with rigid shaft connector, the connecting end of the rigid shaft connector is connected with screw rod, the outside of the screw rod is equipped with screw rod nut, one side of the screw rod nut is equipped with push rod, the inside of the shell is provided with U type connector, the push rod is cooperated with U type connector, one side of the U type connector is provided with clamping jaw, the inside of the shell is provided with front end cover, the inside of the front end cover is provided with two oil seal PTFE carbon fiber sealing ring, the outside of the front end cover is provided with third O type ring.
[0005] Preferably, the inside of the motor base one side is provided with joint cover, the outside of the joint cover is provided with first O type ring, the first O type ring is cooperated with the inner wall of motor base, the inside of the joint cover is provided with integrated cable plug, the one side of the joint cover and the outside of integrated cable plug are provided with plug pressing block.
[0006] Preferably, the outside of the motor base is provided with second O type ring, and the second O type ring is cooperated with the inner wall of the shell.
[0007] Preferably, the inside of the push rod is provided with a hole matched with the screw rod.
[0008] Preferably, the push rod is slidably connected with the oil seal PTFE carbon fiber sealing ring and the front end cover.
[0009] Preferably, the third O type ring is cooperated with the inner wall of the shell.
[0010] The utility model provides a kind of mechanical arm for underwater object grabbing, with following beneficial effects:
[0011] 1、The mechanical arm for underwater object grabbing, by the rotation of servo motor is converted into the opening and closing movement of gripper through the cooperation of screw nut, push rod and U-shaped connector, and the risk of water leakage is reduced by two layers of oil seal PTFE carbon fiber sealing ring, tail uses integrated cable plug sealing mode to replace the high-cost water-tight joint, while simplifying structure, reduce the risk of water leakage, reduce cost, improve economic benefits. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 For the utility model structure schematic diagram.
[0013] In the drawing: 1, shell; 2, plug pressing block; 3, joint cover; 4, first O ring; 5, second O ring; 6, rigid shaft connector; 7, screw nut; 8, screw rod; 9, third O ring; 10, push rod; 11, gripper; 12, U-shaped connector; 13, oil seal PTFE carbon fiber sealing ring; 14, front end cover; 15, motor base; 16, servo motor; 17, integrated cable plug. DETAILED DESCRIPTION
[0014] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0015] Please refer to Figure 1The utility model provides a technical scheme: a kind of mechanical arm for underwater object grabbing, including shell 1, the inside of shell 1 is provided with motor base 15, the outside of motor base 15 is provided with second O ring 5, second O ring 5 is matched with the inner wall of shell 1, wherein the effect of second O ring 5 is used to improve its sealing property being connected with the inner wall of shell 1, the inside of motor base 15 is provided with servo motor 16, the output of servo motor 16 is provided with rigid shaft coupler 6, the connecting end of rigid shaft coupler 6 is connected with screw rod 8, the outside of screw rod 8 is installed with screw nut 7, one side of screw nut 7 is installed with push rod 10, wherein the outside of push rod 10 is rectangular, wherein the inside of front end cover 14 is provided with the hole being matched with push rod 10, and it can limit the position of push rod 10, avoid idling, the inside of push rod 10 is provided with the hole being matched with screw rod 8, the inside of shell 1 is provided with U-shaped connector 12, push rod 10 is matched with U-shaped connector 12, one side of U-shaped connector 12 is provided with clamping jaw 11, the inside of shell 1 is provided with front end cover 14, the inside of front end cover 14 is provided with two oil seal PTFE carbon fiber sealing ring 13, the outside of front end cover 14 is provided with third O ring 9, third O ring 9 is matched with the inner wall of shell 1, push rod 10 is slidably connected with oil seal PTFE carbon fiber sealing ring 13 and front end cover 14.
[0016] Wherein one side of two clamping jaws 11 is rotatably connected with front end cover 14, wherein both sides of U-shaped connector 12 are provided with slide pin, the inside of two clamping jaws 11 is provided with sliding slot, when U-shaped connector 12 is moved by push rod 10, two clamping jaws 11 can be moved,
[0017] The inside of one side of motor base 15 is provided with joint cover 3, the outside of joint cover 3 is provided with first O ring 4, first O ring 4 is matched with the inner wall of motor base 15, the inside of joint cover 3 is provided with integrated cable plug 17, one side of joint cover 3 and the outside of integrated cable plug 17 are provided with plug pressing block 2, wherein the tail of shell 1 is effectively improved the overall airtightness of its by the setting of first O ring 4 and integrated cable plug 17 and low in use cost, wherein the effect of plug pressing block 2 is used to fix integrated cable plug 17.
[0018] Summarizing, the mechanical arm for underwater object grabbing, when using, through the positive and negative rotation of servo motor 16 drive rigid shaft coupler 6 and screw rod 8 rotation, simultaneously, it can be moved through the thread of the outside of screw rod 8 push rod 10, it can be through the U-shaped connector 12 of one end of push rod 10 to push clamping jaw 11 to do open-close movement, so as to realize clamping object.
[0019] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A manipulator for underwater gripping of objects, comprising a housing (1), characterized in that: The inside of the shell (1) is provided with a motor base (15), the inside of the motor base (15) is provided with a servo motor (16), the output end of the servo motor (16) is provided with a rigid shaft connector (6), the connecting end of the rigid shaft connector (6) is connected with a lead screw (8), the outer side of the lead screw (8) is threadedly installed with a lead screw nut (7), one side of the lead screw nut (7) is installed with a push rod (10), the inside of the shell (1) is provided with a U-shaped connector (12), the push rod (10) cooperates with the U-shaped connector (12), one side of the U-shaped connector (12) is provided with a clamping jaw (11), the inside of the shell (1) is provided with a front end cover (14), the inside of the front end cover (14) is provided with two oil seal PTFE carbon fiber sealing rings (13), the outer side of the front end cover (14) is provided with a third O-shaped ring (9).
2. The robotic arm for underwater object grasping according to claim 1, wherein: The inside of the motor base (15) on one side is provided with a connector cover (3), the outer side of the connector cover (3) is provided with a first O-shaped ring (4), the first O-shaped ring (4) cooperates with the inner wall of the motor base (15), the inside of the connector cover (3) is provided with an integrated cable plug (17), one side of the connector cover (3) and outside the integrated cable plug (17) is provided with a plug pressing block (2).
3. The robotic arm for underwater object grasping of claim 1, wherein: The outer side of the motor base (15) is provided with a second O-shaped ring (5), the second O-shaped ring (5) cooperates with the inner wall of the shell (1).
4. The robotic arm for underwater object grasping of claim 1, wherein: The inside of the push rod (10) is provided with a hole matched with the lead screw (8).
5. The robotic arm for underwater object grasping of claim 1, wherein: The push rod (10) is in sliding connection with the oil seal PTFE carbon fiber sealing ring (13) and the front end cover (14).
6. The robotic arm for underwater object grasping of claim 1, wherein: The third O-shaped ring (9) cooperates with the inner wall of the shell (1).