Underwater release device based on link mechanism unlocking

Abstract

An underwater releasing device based on linkage mechanism unlocking comprises a base and a releasing mechanism, the releasing mechanism comprises a driving unit, a transmission unit and a clamping unit, and the clamping unit is provided with two hoops; the transmission unit comprises two sets of connecting rod assemblies, each connecting rod assembly is provided with two connecting rods connected in series, a lead screw rod of the lead screw assembly is driven by the motor to rotate and drive a lead screw nut to move axially, and the lead screw nut moving axially drives the two hoops to be opened or closed through the two sets of connecting rod assemblies so as to hold or release a released part. According to the embodiment of the utility model, the motor is utilized, the lead screw assembly and the connecting rod assembly are used for driving the hoop to be opened and closed, so that the released part is held and released, the hoop is separated from the released part after the released part is released, and is not released along with the released part, and the equipment weight of the released part is reduced; the flatness and streamline of the outer surface of the released part are kept, the influence on the moving performance of the released part in water is eliminated, the structure is simple, and the installation and maintenance difficulty is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of ocean detection, and in particular relates to an underwater releasing device based on unlocking of a connecting rod mechanism. Background Art

[0002] In existing technology, underwater observation and detection equipment is typically deployed from a carrier platform to enable covert underwater observation and detection. Common underwater observation and detection equipment, such as buoys and underwater gliders, typically have a cylindrical rotating body structure. To ensure that these devices do not shift or fall during deployment, they are typically secured to the carrier platform using rigid clamps. Release mechanisms such as explosive bolts and hydraulic cylinders are used to release the connection.

[0003] For example, the patent "An Underwater Carrying Release Device" (Publication No.: CN116176810A) discloses a method for securing underwater equipment using an annular clamp. The annular clamp is integrally fixed to the released component, and the entire assembly is connected to the release device body via a clamping hook. When deployment is required, a hydraulic cylinder drives the clamping hook to rotate, releasing the clamp from the carrier platform and releasing the underwater equipment and the annular clamp into the water.

[0004] However, this traditional release mechanism has several drawbacks. First, the annular clamp enters the water along with the released component after release, increasing the weight of the equipment. This is particularly detrimental to equipment requiring high buoyancy, such as buoys and gliders. Furthermore, the annular clamp can disrupt the streamlined design of the equipment, affecting its mobility and flexibility in the water. Second, the use of multiple hooks complicates the system, increasing the difficulty of installation and maintenance, and affecting the convenience and efficiency of actual operations. Utility Model Content

[0005] In response to the shortcomings in the relevant technology, the utility model provides an underwater release device based on unlocking of a connecting rod mechanism to solve the problems that the current release structure increases the weight of the released parts, the mobility and the complexity of the system.

[0006] The utility model provides an underwater release device based on unlocking of a connecting rod mechanism, which is used for fixing and releasing a released part, comprising:

[0007] base;

[0008] a release mechanism, mounted on the base;

[0009] Release mechanisms include:

[0010] a drive unit having a motor and a lead screw assembly;

[0011] Transmission unit, connecting the screw nut of the screw assembly;

[0012] The clamping unit has two hoops, the released member is located between the two hoops, and the two hoops are hinged on the mounting seat provided on the base and are connected to the transmission unit;

[0013] The transmission unit includes:

[0014] The connecting rod assembly has two groups. The connecting rod assembly has two connecting rods connected in series, and one end of each is fixedly connected to a corresponding clamp. The other ends of the two groups of connecting rod assemblies are hinged to the screw nut. The screw of the screw assembly rotates under the drive of the motor, driving the screw nut to move axially. The axially moving screw nut drives the two clamps to open or close through the two groups of connecting rod assemblies to clamp or release the released parts.

[0015] In some embodiments, the drive unit further includes a power compartment housing, and the motor is fixedly installed in the power compartment housing;

[0016] One end of the lead screw penetrates into the power compartment housing and is connected to the output shaft of the motor through a coupling;

[0017] The other end of the lead screw extends out of the power compartment housing and is threadedly connected to the connecting groove provided with the lead screw nut;

[0018] A guide rod is provided on the end surface of the lead screw nut, and the guide rod is inserted into a guide hole provided in the power compartment shell.

[0019] In some embodiments, the power compartment housing has a transmission hole, the lead screw passes through the transmission hole, and a thrust bearing is installed on it. The thrust bearing is limited by a limit nut fixedly installed on the lead screw in a step groove set at the inner end of the transmission hole.

[0020] In some embodiments, the power compartment shell includes a main body and two end covers, which are respectively installed at both ends of the main body and respectively close the ports at both ends of the main body. The screw passes through one end cover, and an airtight plug is installed on the exhaust hole set in the other end cover.

[0021] In some embodiments, the two connecting rods of the connecting rod assembly are respectively the first connecting rod and the second connecting rod, the first connecting rod is hinged to the screw nut, and the second connecting rod is fixedly connected to the clamp, the two first connecting rods are respectively located on both sides, and the two second connecting rods are cross-arranged.

[0022] In some embodiments, the clamp is in an arc shape matching the released piece, and when the two clamps clamp the released piece, the distance between the bottom ends of the two clamps is smaller than the outer diameter of the released piece.

[0023] In some embodiments, an auxiliary support seat is further included, which is installed on the base. The released member is located in a limiting groove set in the auxiliary support seat, and the front and rear sides of the release mechanism both have auxiliary support seats.

[0024] In some embodiments, the inner wall of the limiting groove is located in an arc shape that matches the released member, and the arc angle thereof is less than or equal to 180 degrees.

[0025] In some embodiments, two mounting seats are provided at the front and rear ends, and the lead screw nut and the connecting rod assembly are located between the two mounting seats.

[0026] In some embodiments, the mounting seat is hollowed out along the length direction of the released member.

[0027] Compared with the prior art, the beneficial effects of the present application are as follows: in the embodiment of the utility model, a motor is utilized, and a screw assembly and a connecting rod assembly are used to drive the clamp to open and close, thereby realizing the clamping and release of the released part. After the released part is released, the clamp is separated from it and will not be released together with the released part, thereby reducing the equipment weight of the released part, maintaining the flatness and streamline of the outer surface of the released part, eliminating the impact on its underwater mobility, and having a simple structure and low installation and maintenance difficulty; in addition, the clamp is driven to open and close by the screw assembly, and the screw assembly has a self-locking performance, thereby improving the firmness of the fixation when clamping and fixing the released part, preventing the released part from accidentally falling off during operation, and solving the problem that the current release structure increases the weight of the released part, mobility and system complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the underwater release device based on the unlocking of the connecting rod mechanism of the utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of the underwater release device based on the unlocking of the connecting rod mechanism of the utility model. Figure 2 ;

[0031] Figure 3 This is a cross-sectional structural diagram of the drive unit in the underwater release device unlocked based on the connecting rod mechanism of the present invention.

[0032] In the picture:

[0033] 1. Base; 11. Mounting base;

[0034] 2. Drive unit; 21. Motor; 22. Lead screw; 23. Lead screw nut; 24. Power compartment housing; 241. Guide hole; 242. Transmission hole; 243. Step groove; 244. Main body; 245. End cover; 246. Exhaust hole; 247. Airtight plug; 25. Connecting groove; 26. Guide rod; 27. Limit nut;

[0035] 3. Transmission unit; 3', connecting rod assembly; 31, first connecting rod; 32, second connecting rod;

[0036] 4. Clamping unit; 41. Clamping hoop;

[0037] 5. Released part; 6. Coupling; 7. Sealing ring; 8. Thrust bearing; 9. Auxiliary support seat; 91. Limiting groove. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments 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 making any creative efforts are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] The terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of such features.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0042] like Figures 1 to 2 As shown, in an illustrative embodiment of the underwater releasing device based on the unlocking of the connecting rod mechanism of the present invention, the underwater releasing device based on the unlocking of the connecting rod mechanism includes a base 1 and a releasing structure, and the releasing mechanism is installed on the base 1.

[0043] The release mechanism includes a drive unit 2, a transmission unit 3 and a clamping unit 4. The drive unit 2 includes a motor 21 and a screw assembly, the screw assembly having a screw rod 22 and a screw nut 23 threadedly mounted on the screw rod 22. The transmission assembly is connected to the screw nut 23. The clamping unit 4 includes two clamps 41, both of which are hinged on the mounting base 11 provided on the base 1, and

[0044] Both are connected to transmission unit 3.

[0045] The transmission unit 3 includes two groups of connecting rod assemblies 3 ′. The connecting rod assembly 3 ′ has two connecting rods connected in series. One end of the two connecting rod assemblies 3 ′ is fixedly connected to a corresponding clamp 41 , and the other end is hinged to the screw nut 23 .

[0046] In the connecting rod assembly 3', the connecting rod closest to the lead screw nut 23 is the first connecting rod 31, and the other connecting rod is the second connecting rod 32. The drive shaft of the motor 21 is connected to the lead screw 22, thereby rotating the lead screw 22 under the drive of the motor 21. The rotating lead screw 22 drives the lead screw nut 23 to move axially, thereby pushing and pulling the connecting rod assembly 3', causing the first connecting rod 31 of the connecting rod assembly 3' to push and pull the second connecting rod 32 to swing. As the second connecting rod 32 swings, the two clamps 41 move toward or away from each other, tightening or loosening the released component 5 located between the two clamps 41.

[0047] The base 1 is mounted on an underwater navigation device such as an ROV and then submerged underwater. During navigation, the two clamps 41 hold the released part 5 tightly, keeping the released part 5 fixed, allowing the underwater navigation device to stably carry the released part 5 underwater. When the device reaches the predetermined underwater position, the motor 21 drives the two clamps 41 to open via the screw assembly and the connecting rod assembly 3', thereby releasing the released part 5 to the predetermined underwater position. After the underwater navigation device completes the release of the released part 5, it sails to the surface or is hoisted to be put on. The motor 21 drives the two clamps 41 to close again, clamping and fixing the new released part 5, allowing the device to quickly enter the water and release the new released part 5. The fixed installation and underwater release operation of the released part 5 are convenient and highly efficient.

[0048] In the above-mentioned schematic embodiment, the underwater release device based on the unlocking of the connecting rod mechanism uses the motor 21 and drives the clamp 41 to open and close through the screw assembly and the connecting rod assembly 3', thereby realizing the clamping and release of the released part 5. The screw assembly and the connecting rod assembly 3' have a simple structure, stable operation, and are relatively easy to install and maintain. After the two clamps 41 loosen the released part 5 to release it, the clamp 41 breaks away from contact with the released part 5, and does not increase the weight of the released part 5. The outer surface of the released part 5 remains smooth, so that it can be flexibly moved underwater or stably fixed in the release position, reducing the impact of water flow on it, and the screw assembly has a self-locking performance, so when the two clamps 41 clamp and fix the released part 5, its fixation is improved, preventing the released part 5 from accidentally falling off during operation, solving the problem that the current release structure increases the weight of the released part 5, the mobility and the system complexity.

[0049] In some embodiments, as Figure 3 As shown, the drive unit 2 further includes a power compartment housing 24, in which the motor 21 is fixedly mounted. One end of the lead screw 22 extends through the power compartment housing 24 and is connected to the output shaft of the motor 21 via a coupling 6. The other end of the lead screw extends out of the power compartment housing 24 and is threadedly connected to a connecting groove 25 provided in the lead screw nut 23. A guide rod 26 is provided on the end surface of the lead screw nut 23 and is inserted into a guide hole 241 provided in the power compartment housing 24.

[0050] The motor 21 is installed in a sealed power compartment housing 24. The sealing performance of the power compartment housing 24 is used to ensure that the motor 21 is in a dry environment. This allows the motor 21 to maintain stable operation without the need for a waterproof motor 21, thereby reducing equipment costs. The lead screw 22 is threadedly connected to the connecting groove 25 of the lead screw nut 23 and will not penetrate the lead screw nut 23, thereby improving the strength of the overall structure of the lead screw nut 23 and making it a more stable push-pull connecting rod structure. The lead screw nut 23 can cover the stroke of the lead screw nut 22, preventing the threaded structure from being exposed to the outside and preventing damage, thereby maintaining the stable operation of the lead screw assembly. The axial depth of the connecting groove 25 can also achieve its stroke constraint. The cooperation between the guide hole 241 and the guide rod 26 not only guides the axial movement of the axis of the lead screw nut 23, but also constrains the direction of the rotation of the stroke of the lead screw nut 23, preventing it from rotating synchronously with the lead screw nut 22, thereby ensuring that the lead screw nut 23 moves axially when the lead screw nut 22 rotates.

[0051] Furthermore, when the two clamps 41 tightly embrace the released member 5, the end face of the lead screw nut 23 abuts against the outer wall of the engine compartment housing 24, thereby covering the transmission hole 242 formed in the engine compartment housing 24 through which the lead screw 22 passes. This prevents water from impacting the transmission hole 242 and protruding into the engine compartment housing 24 during navigation, further improving the sealing performance of the engine compartment housing 24. To maintain the normal sealing performance of the engine compartment housing 24, multiple sealing rings 7 are installed in the transmission hole 242. The sealing rings 7 are sleeved around the lead screw 22, thereby sealing the gap between the lead screw 22 and the transmission hole 242.

[0052] The end of the lead screw 22 is also sleeved and installed on the sealing ring 7 to seal the gap between it and the connecting groove 25 to prevent water from entering the connecting groove 25 and hindering the axial movement of the lead screw 22 in the connecting groove 25, thereby ensuring smooth axial movement of the lead screw nut 23.

[0053] In some embodiments, the power compartment housing 24 has a transmission hole 242 through which the lead screw 22 passes and through which a thrust bearing 8 is sleeved and mounted. The thrust bearing 8 is restrained in a stepped groove 243 provided at the inner end of the transmission hole 242 by a retaining nut 27 fixedly mounted on the lead screw 22. The thrust bearing 8 ensures smooth rotation of the lead screw 22, and the retaining nut 27 mounted on its inner end allows for the restrained installation of the thrust bearing 8. This simplifies the fixing structure, improves the compactness of the assembly structure, reduces the weight of the equipment, and enhances the flexibility of underwater travel, enabling the underwater navigation equipment to quickly and flexibly reach a predetermined position.

[0054] In some embodiments, the power compartment housing 24 includes a main body 244 and two end covers 245. The two end covers 245 are respectively installed at both ends of the main body 244 and respectively close the ports at both ends of the main body 244. The screw 22 passes through one end cover 245, and an airtight plug 247 is installed on the exhaust hole 246 set in the other end cover 245.

[0055] The cylindrical body 244 is easy to machine, with open ends to facilitate installation of the motor 21 and other components. An end cap 245 seals the port of the body 244, ensuring the sealing of the power compartment housing 24. The lead screw assembly is conveniently pre-installed on the end cap 245 and then connected to the motor 21 within the body 244. The end cap 245 features an exhaust port to evacuate the power compartment housing 24, improving internal dryness, preventing airborne corrosion of the motor 21 and other components, and extending the life of the equipment. An airtight plug 247 seals the exhaust port to ensure a tight seal.

[0056] In some embodiments, the two connecting rods of the connecting rod assembly 3' are respectively a first connecting rod 31 and a second connecting rod 32. The first connecting rod 31 is hingedly connected to the screw nut 23, and the second connecting rod 32 is fixedly connected to the clamp 41. The two first connecting rods 31 are respectively located on both sides, and the two second connecting rods 32 are arranged crosswise. The first connecting rod 31 is located on one side of the connecting rod assembly 3', and its second connecting rod 32 is connected to the clamp 41 on the other side. Parts of the two connecting rod assemblies 3' overlap with each other, which not only reduces the space occupied by the two connecting rod assemblies 3' when they are active, improving the compactness of the structure, but also allows the two connecting rod assemblies 3' to support each other, improving the structural stability.

[0057] In some embodiments, the clamping hoops 41 are arc-shaped to match the released member 5. When the two clamping hoops 41 clamp the released member 5, the distance between their bottom ends is less than the outer diameter of the released member 5. This matching arc shape ensures that the inner walls of both clamping hoops 41 fully conform to the surface of the released member 5 when clamping and securing it, enhancing friction and improving clamping stability. When the two clamping hoops 41 clamp and secure the released member 5, the coverage area of ​​the two clamping hoops 41 exceeds 180 degrees, thus stably securing the released member 5. This reduces the length of the clamping hoops 41, the material used, and the weight, allowing the underwater navigation equipment mounted thereon to move flexibly underwater.

[0058] In some embodiments, the release mechanism further includes an auxiliary support seat 9, which is mounted on the base 1. The released member 5 is located in a limiting groove 91 provided in the auxiliary support seat 9. Auxiliary support seats 9 are provided on both the front and rear sides of the release mechanism. Because the released member 5 is generally long, when only the middle portion is clamped and fixed by the two clamps 41, its front and rear ends are prone to swing relative to its length, increasing its area facing the water flow. This not only increases the resistance of the underwater navigation equipment when carrying it underwater, but also makes the released member 5 easily fall under the action of the water flow. The auxiliary support seat 9 forms a radial limit on the released member 5 through the limiting groove 91, preventing the released member 5 from swinging left and right and up and down at both ends, keeping it parallel to the navigation direction, reducing the effect of the water flow, and improving its stability.

[0059] In some embodiments, the inner wall of the limiting groove 91 is located in a circular arc that matches the released part 5, and its arc is less than or equal to 180 degrees, so that the two auxiliary support seats 9 can prevent the released part 5 from swinging in the left and right directions and the up and down directions to improve its stability, while reducing the structural volume of the auxiliary support seat 9, reducing the weight, and allowing the underwater navigation equipment to move flexibly underwater.

[0060] In some embodiments, two mounting blocks 11 are provided, one at the front and one at the back, with the lead screw nut 23 and connecting rod assembly 3' positioned between the two mounting blocks 11. A clamp 41 is hingedly connected to the two mounting blocks 11, enhancing their stability. The connecting rod assembly 3' and the lead screw thread move in the space between the mounting blocks 11, preventing operational obstructions caused by contact with external objects and improving the stability of the structure.

[0061] In some embodiments, as Figure 2 As shown, the mounting base 11 is hollowed out along the length of the releasable member 5. This allows water to flow through the mounting base 11 during underwater movement of the underwater navigation device carrying the releasable member 5, reducing the obstruction of the mounting base 11 to underwater movement and improving underwater movement efficiency. Furthermore, the hollow structure reduces the weight of the mounting base 11, allowing the underwater navigation device to move more flexibly underwater.

[0062] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. An underwater release device based on a connecting rod mechanism for unlocking, used for fixing and releasing a released part, characterized in that: include: base; a release mechanism, mounted on the base; The release mechanism comprises: a drive unit having a motor and a lead screw assembly; A transmission unit connected to the screw nut of the screw assembly; The clamping unit has two hoops, the released member is located between the two hoops, and the two hoops are hinged to the mounting seat provided on the base and are connected to the transmission unit; The transmission unit comprises: The connecting rod assembly has two groups, each of which has two connecting rods connected in series, and one end of each is fixedly connected to a corresponding clamp. The other ends of the two groups of connecting rod assemblies are hinged to the screw nut. The screw of the screw assembly rotates under the drive of the motor, driving the screw nut to move axially. The axially moving screw nut drives the two clamps to open or close through the two groups of connecting rod assemblies to clamp or release the released part.

2. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: The drive unit further includes a power compartment housing, and the motor is fixedly installed in the power compartment housing; One end of the lead screw penetrates into the power compartment housing and is connected to the output shaft of the motor through a coupling; The other end of the lead screw extends out of the power compartment housing and is threadedly connected to the connecting groove provided in the lead screw nut; A guide rod is provided on the end surface of the lead screw nut, and the guide rod is inserted into a guide hole provided in the power compartment housing.

3. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 2, characterized in that: The power compartment housing has a transmission hole, the lead screw passes through the transmission hole, and a thrust bearing is installed on it. The thrust bearing is limited in a step groove provided at the inner end of the transmission hole by a limiting nut fixedly installed on the lead screw.

4. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 2, characterized in that: The power compartment shell includes a main body and two end covers, which are respectively installed at both ends of the main body and respectively close the ports at both ends of the main body. The lead screw passes through one end cover, and an airtight plug is installed on the exhaust hole set in the other end cover.

5. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: The two connecting rods of the connecting rod assembly are respectively a first connecting rod and a second connecting rod, the first connecting rod is hinged to the screw nut, and the second connecting rod is fixedly connected to the clamp, the two first connecting rods are respectively located on both sides, and the two second connecting rods are cross-arranged.

6. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: The clamp is in an arc shape matching the released piece. When the two clamps clamp the released piece, the distance between the bottom ends of the two clamps is smaller than the outer diameter of the released piece.

7. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: It further includes an auxiliary support seat, which is installed on the base. The released member is located in a limiting groove set on the auxiliary support seat. The auxiliary support seat is provided on both the front and rear sides of the release mechanism.

8. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 7, characterized in that: The inner wall of the limiting groove is located in an arc shape matching the released member, and its arc angle is less than or equal to 180 degrees.

9. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: There are two mounting seats at the front and rear, and the lead screw nut and the connecting rod assembly are both located between the two mounting seats.

10. The underwater release device based on the unlocking of the connecting rod mechanism according to claim 1, characterized in that: The mounting seat is hollowed out along the length direction of the released member.

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