A multi-functional lift transport vehicle for autonomous underwater vehicles

Abstract

The utility model discloses a multifunctional lifting transport vehicle for autonomous underwater vehicle, including frame, telescopic support leg, bevel gear drive mechanism and fixed assembly, frame includes two frame monomers of one front and one rear arrangement, and is fixedly connected through two groups of connecting rods. Two telescopic support legs are symmetrically equipped with on frame monomer's left and right sides, and each telescopic support leg is connected with the corresponding side of frame monomer through self -locking lifting mechanism, and its lower end is equipped with universal wheel. Two bevel gear drive mechanisms are symmetrically equipped with on frame monomer, and each bevel gear drive mechanism is connected with the self -locking lifting mechanism of same side. Fixed assembly has two, and is respectively arranged at the top of two frame monomers. The utility model four support legs can be individually or synchronous height adjustment, satisfy the levelness requirement of autonomous underwater vehicle, can keep the reliability of ground transportation after locking each telescopic support leg through positioning assembly, have good shock attenuation performance, and be applicable to the use requirement under various working conditions environment.

Description

Technical Field

[0001] This utility model relates to the field of underwater navigation equipment technology, specifically to a multi-functional lifting and transport vehicle for autonomous underwater vehicles. Background Technology

[0002] Traditional transport devices for autonomous underwater vehicles (AUVs) suffer from significant technical bottlenecks in practical applications due to limitations in their structural design and functional integration. AUVs require a certain level of horizontality during transport, placement, and maintenance, and also demand high stability when placed on the transport device. Because of inherent imperfections in the flatness and levelness of the site, adjustments to the support requirements of the transport device are necessary to meet the AUV's requirements for flatness and stability. Existing traditional transport devices have simple structures and cannot adjust the height of each support leg. Only a very few traditional transport devices have adjustable support legs, but these are often complex and require readjustment during placement and transport, making the operation cumbersome. The transport process involves bumps and vibrations, posing a risk of damage to the AUV's internal equipment, especially when placed on sloping ground, making it difficult to guarantee the stability of the vehicle body and the AUV's levelness requirements. Existing traditional transport devices are unsuitable for various operating conditions. Therefore, there is an urgent need to develop a multi-functional lifting transport trolley to overcome existing technical barriers through systematic innovation. Utility Model Content

[0003] To address the shortcomings of the existing technology, the purpose of this utility model is to propose a multi-functional lifting and transport vehicle for autonomous underwater vehicles (AUVs). This solves the problems of traditional transport devices having simple structures, difficulty in independently adjusting the height of each support leg, and only a very few traditional transport devices having adjustable support legs, which are often complex in structure. They require readjustment in both placement and transport states, making the operation cumbersome and posing a risk of damage to the internal equipment of the AUV during transport.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A multi-functional lifting and transport vehicle for autonomous underwater vehicles includes a frame, telescopic outriggers, a self-locking lifting mechanism, a bevel gear transmission mechanism, and a fixing assembly. The frame includes two frame units with an N-shaped structure, which are arranged in a front-to-back orientation and are fixedly connected as a whole by two sets of connecting rods.

[0006] Each frame unit has two telescopic support legs symmetrically arranged on its left and right sides. Each telescopic support leg is inserted into the corresponding side of the frame unit and connected through a self-locking lifting mechanism. The lower end of each support leg is equipped with a universal wheel with braking function. Each frame unit is equipped with two positioning components.

[0007] The upper part of the frame unit is symmetrically equipped with two bevel gear transmission mechanisms. A handle is installed on the opposite side of the two bevel gear transmission mechanisms. Each bevel gear transmission mechanism is connected to a self-locking lifting mechanism on the same side. The handle drives the telescopic outrigger on the same side to rise or fall through the bevel gear transmission mechanism and the self-locking lifting mechanism.

[0008] There are two fixing components, which are respectively located on top of the two frame units. The fixing components include a support frame and a clamp. The left and right sides of the support frame are connected to the frame unit through shock-absorbing supports. The clamp is detachably located on the top of the support frame.

[0009] Furthermore, the frame unit includes a crossbeam made of square tubing and two fixed legs, both of which are arranged vertically and welded at their upper ends to both ends of the crossbeam.

[0010] The telescopic outrigger is a section of square tube adapted to the fixed outrigger. The upper end of the telescopic outrigger is located inside the corresponding fixed outrigger and slides with the fixed outrigger.

[0011] Furthermore, the fixed outrigger has a first through hole at its lower end, and the telescopic outrigger has multiple second through holes of the same specifications and corresponding positions as the first through hole. All the second through holes on the telescopic outrigger are arranged at equal intervals.

[0012] The positioning assembly includes a positioning rod and a locking nut. The positioning rod can be inserted into the first through hole, and the locking nut is screwed onto the end of the positioning rod to connect the telescopic outrigger to the fixed outrigger.

[0013] Furthermore, the two sets of connecting rods are located between the two frame units and are arranged symmetrically from left to right. Each set of connecting rods includes at least one connecting rod, which is arranged horizontally in the longitudinal direction. The front and rear ends of each connecting rod are respectively fixedly connected to two fixed legs on the same side.

[0014] Furthermore, the self-locking lifting mechanism includes a lead screw and a lead screw nut seat. The lead screw is vertically disposed inside the fixed support leg, and its upper end is rotatably connected to the fixed support leg through a bearing seat.

[0015] The screw nut is fixedly embedded in the upper end of the telescopic outrigger, and the screw rod passes through the inner side of the screw nut, with its lower end located inside the telescopic outrigger. The screw rod and the screw nut are engaged by a self-locking thread pair.

[0016] Furthermore, the bevel gear transmission mechanism includes a first bevel gear, a second bevel gear, and a gear shaft. The gear shaft is transversely inserted through the inner side of the fixed support leg and rotates with it. Both ends of the gear shaft extend to the outside of the fixed support leg.

[0017] The first bevel gear is fixedly mounted on the gear shaft, the second bevel gear is fixedly sleeved on the upper end of the lead screw and meshes with the first bevel gear, and the handle is fixedly mounted on the end of the gear shaft.

[0018] Furthermore, the bevel gear transmission mechanism also includes a transmission shaft, which is horizontally arranged below the crossbeam and rotatably connected to the vehicle frame unit through two bearing seats. The left and right ends of the transmission shaft are detachably connected to the corresponding ends of the two gear shafts through a coupling.

[0019] Furthermore, the shock-absorbing support body includes an upper cover, a lower cover, and multiple shock-absorbing springs. The bottom of the lower cover is fixed to the upper surface of the crossbeam by a mounting seat, and the inner side is a cavity with an open top. The upper outer wall of the lower cover has an annular limiting part.

[0020] The inner side of the upper cover is a cavity with an open bottom. The upper cover is fitted over the lower cover, and its top is bolted to the support frame.

[0021] The inner wall of the upper cover slides vertically with the side wall of the annular limiting part, and the lower end of the upper cover has an inward annular flange located below the annular limiting part.

[0022] Multiple shock-absorbing springs are regularly arranged inside the cavities of the upper and lower covers. Each spring is vertically positioned, with its upper end connected to the top wall of the upper cover via an upper spring seat, and its lower end connected to the bottom of the lower cover via a lower spring seat.

[0023] By adopting the above technical solution, the beneficial technical effects of this utility model are as follows: the four support legs of the multi-functional lifting transport vehicle of this utility model can be adjusted in height individually or simultaneously to meet the levelness requirements of the autonomous underwater vehicle when placed on uneven or sloping ground. After locking each telescopic support leg, rapid transportation on the ground can be achieved, and it has good shock absorption performance, making it suitable for use in various working conditions. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a multi-functional lifting and transport vehicle for autonomous underwater vehicles according to this utility model.

[0025] Figure 2 This is a structural schematic diagram of the frame unit of this utility model.

[0026] Figure 3 This is a structural schematic diagram of the combination of the self-locking lifting mechanism, bevel gear transmission mechanism and handle of this utility model.

[0027] Figure 4 This is a side view of the combined structure of the frame unit and related parts of this utility model.

[0028] Figure 5 yes Figure 4 The combined structure shown is a cross-sectional view in the direction of view AA.

[0029] Figure 6 This is a structural diagram of the combination of the telescopic outrigger and the universal wheel of this utility model.

[0030] Figure 7 yes Figure 5 Enlarged view of section B. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings:

[0032] Combination Figures 1 to 7 A multi-functional lifting and transport vehicle for autonomous underwater vehicles (AUVs) includes a frame, telescopic outriggers 2, a self-locking lifting mechanism 4, a bevel gear transmission mechanism, and fixing components 3. The frame comprises two N-shaped frame units 1, arranged front and rear facing each other and fixedly connected as one unit by two sets of connecting rods 13. The multi-functional lifting and transport vehicle is used for the transportation, storage, and maintenance of AUVs on land. Typically, at least two multi-functional lifting and transport vehicles are used in conjunction, with multiple vehicles arranged linearly at intervals. The AUV is placed inside the support frame 31 of each fixing component 3 and secured to the frame of the multi-functional lifting and transport vehicle using clamps 32. During maintenance, the AUV must be kept horizontally positioned.

[0033] Specifically, the frame unit 1 includes a crossbeam 11 made of square tubing and two fixed legs 12. Both fixed legs 12 are arranged vertically, and their upper ends are welded to both ends of the crossbeam 11. The frame unit 1 is made of high-strength aluminum alloy square tubing, which has high strength and corrosion resistance, ensuring the stability and positioning accuracy adjustment of the AUV during transportation.

[0034] Two sets of connecting rods 13 are located between two frame units 1 and are arranged symmetrically from left to right. Each set of connecting rods 13 includes two connecting rods 13 arranged parallel to each other, one above the other. Each connecting rod 13 is arranged horizontally in the longitudinal direction. The front and rear ends of each connecting rod 13 are respectively fixedly welded to two fixed legs 12 on the same side. The two frame units 1 are welded together by the two sets of connecting rods 13 to form the main body of the frame, which has high strength and light weight.

[0035] Two telescopic support legs 2 are symmetrically arranged on the left and right sides of the frame unit 1. Each telescopic support leg 2 is inserted into the corresponding side of the frame unit 1. Specifically, the telescopic support leg 2 is a section of square tube adapted to the fixed support leg 12. The upper end of the telescopic support leg 2 is located inside the corresponding fixed support leg 12 and slides with the fixed support leg 12. Each telescopic support leg 2 has a universal wheel 21 with braking function installed at its lower end. The multi-functional lifting transport vehicle can move and be fixed on the ground through the four universal wheels 21 with braking function. The top of the telescopic support leg 2 is fixed with a top plate 23 in an embedded manner. The top plate 23 has mounting holes 231.

[0036] The inner wall of the fixed support leg 12 is covered with an industrial-grade polyurethane coating, which has excellent flexibility and friction properties. The outer wall of the telescopic support leg 2 maintains sliding contact with the surface of the polyurethane coating, which can effectively limit the radial displacement of the telescopic support leg 2. During the up and down movement, the telescopic support leg 2 avoids lateral swaying or deviation, ensuring the linear motion accuracy and stability of the telescopic support leg 2.

[0037] Each telescopic outrigger 2 is connected to its upper fixed outrigger 12 via a self-locking lifting mechanism 4. Each frame unit 1 is equipped with two positioning components. The self-locking lifting mechanism 4 includes a lead screw 41 and a lead screw seat 42. The lead screw 41 is vertically disposed inside the fixed outrigger 12, and its upper end is rotatably connected to the fixed outrigger 12 via a bearing seat 43. The lead screw seat 42 is embedded in the mounting hole 231 of the top plate 23 and is fixedly connected to the upper end of the telescopic outrigger 2. The lead screw 41 is vertically inserted through the inner side of the lead screw seat 42, and its lower end is located inside the telescopic outrigger 2. The lead screw 41 and the lead screw seat 42 are engaged by a self-locking threaded pair. By rotating the lead screw 41, the telescopic outrigger 2 can be adjusted relative to the fixed outrigger 12. Under the weight of the vehicle body and the autonomous underwater vehicle placed on the vehicle body, the lead screw 41 will not rotate relative to the lead screw seat 42, maintaining the stability of the support.

[0038] Specifically, each of the fixed legs 12 has a first through hole 121 at its lower end, and the telescopic leg 2 has a plurality of second through holes 22 with the same specifications and corresponding positions as the first through hole 121. All the second through holes 22 on the telescopic leg 2 are arranged at equal intervals in sequence.

[0039] The positioning assembly includes a positioning rod 14 and a locking nut. The positioning rod 14 can be inserted into the first through hole 121, and the locking nut is screwed onto the end of the positioning rod 14 to connect the telescopic leg 2 with the fixed leg 12. Before transporting the autonomous underwater vehicle, the first through hole 121 of each fixed leg 12 needs to be aligned with the corresponding second through hole 22 of its inner telescopic leg 2, and the positioning rod 14 is used to lock the fixed leg 12 with its inner telescopic leg 2. This prevents the multi-functional lifting transport vehicle from losing stability due to uneven road surfaces and bumps during travel.

[0040] Two bevel gear transmission mechanisms are symmetrically arranged on the upper part of the frame unit 1. A handle 7 is installed on the opposite side of the two bevel gear transmission mechanisms. Each bevel gear transmission mechanism is connected to the self-locking lifting mechanism on the same side. The handle 7 drives the telescopic outrigger 2 on the same side to rise or fall through the bevel gear transmission mechanism and the self-locking lifting mechanism.

[0041] Specifically, the bevel gear transmission mechanism includes a first bevel gear 51, a second bevel gear 52, and a gear shaft 53. The gear shaft 53 is transversely inserted through the inner side of the fixed support leg 12, and both ends of the gear shaft 53 extend to the outside of the fixed support leg 12. The gear shaft 53 is rotatably engaged with the fixed support leg 12 via two opposing bearing sleeves 56, which are mounted on the left and right side walls of the fixed support leg 12. The first bevel gear 51 is fixedly mounted on the gear shaft 53, and the second bevel gear 52 is fixedly sleeved on the upper end of the lead screw 41 and meshes with the first bevel gear 51. The handle 7 is fixedly mounted on the end of the gear shaft 53.

[0042] Using the handle 7, rotate the gear shaft 53 and the first bevel gear 51. The first bevel gear 51 drives the lead screw 41 to rotate clockwise or counterclockwise around its axis through the second bevel gear 52. This drives the lead screw nut 42 to raise or lower the telescopic outrigger 2 relative to the frame unit 1, so that all four support points of the multi-functional lifting transport vehicle are in contact with the ground and the frame remains horizontal.

[0043] The bevel gear transmission mechanism also includes a drive shaft 54, which is horizontally arranged below the crossbeam 11. It is rotatably connected to the bottom of the crossbeam 11 of the frame unit 1 via two bearing seats 55. The left and right ends of the drive shaft 54 ​​are detachably connected to the corresponding ends of the two gear shafts 53 via couplings 57. One end of the coupling 57 is fixedly connected to the end of the drive shaft 54, and the other end is fitted over the corresponding end of the gear shaft 53. The end of the coupling 57 connected to the gear shaft 53 has an elongated slot and a locking bolt. The locking bolt allows for both fixed connection and release of the coupling 57 from the gear shaft 53.

[0044] The two telescopic outriggers 2 under each of the frame units 1 can be adjusted in height individually or simultaneously to ensure that all four casters 21 are in contact with the ground, maintaining the stability of the vehicle body in supporting the autonomous underwater vehicle. When the multi-functional lifting transport vehicle is placed on an inclined surface, the height of each telescopic outrigger 2 can be adjusted to ensure that the autonomous underwater vehicle meets the requirements for levelness.

[0045] There are two fixing components 3, which are respectively located above the two vehicle frame units 1. The fixing components 3 include a support frame 31 and a clamp 32. The left and right sides of the support frame 31 are connected to the vehicle frame unit 1 through the shock-absorbing support body 6. The clamp 32 is detachably located on the top of the support frame 31.

[0046] Specifically, the shock-absorbing support 6 includes an upper cover 61, a lower cover 62, and four shock-absorbing springs 63. The bottom of the lower cover 62 is fixed to the upper surface of the crossbeam 11 via a mounting base 64, and a rubber gasket is provided between the mounting base 64 and the bottom of the lower cover 62. The inner side of the lower cover 62 is a cavity with an open top, and the upper outer wall of the lower cover 62 has an annular limiting part 621. The inner side of the upper cover 61 is a cavity with an open bottom, and the upper cover 61 is fitted over the lower cover 62. A rubber gasket is also provided between the top of the upper cover 61 and the bottom of the support frame 31, and they are fixedly connected by bolts.

[0047] The inner wall of the upper cover 61 slides vertically with the side wall of the annular limiting part 621. The lower end of the upper cover 61 has an inward annular flange 611, which is located below the annular limiting part 621. Four shock-absorbing springs 63 are regularly arranged inside the cavities of the upper cover 61 and the lower cover 62. Each spring is vertically arranged, with its upper end connected to the top wall of the upper cover 61 via an upper spring seat 612, and its lower end connected to the bottom of the lower cover 62 via a lower spring seat 622. The shock-absorbing support 6 can reduce the vibration and impact of the multi-functional lifting transport vehicle when transporting autonomous underwater vehicles. With the synergistic effect of the shock-absorbing support 6 and the rubber pads, it can efficiently absorb up to 85% of the instantaneous impact load. The maximum static load capacity of a single shock-absorbing support 6 is 1200 kg, which can effectively alleviate the impact on the platform structure caused by irregular road surfaces or during operation, and extend the service life of the entire vehicle.

[0048] The parts not mentioned in this utility model can be achieved by adopting or referencing existing technologies.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A multi-functional lifting and transport vehicle for autonomous underwater vehicles, characterized in that, It includes a frame, telescopic outriggers, a self-locking lifting mechanism, a bevel gear transmission mechanism, and a fixing assembly. The frame includes two frame units with an N-shaped structure. The two frame units are arranged in front of and behind each other and are fixedly connected to each other as a whole by two sets of connecting rods. Each frame unit has two telescopic support legs symmetrically arranged on its left and right sides. Each telescopic support leg is connected to the corresponding side of the frame unit through a self-locking lifting mechanism. Each support leg is equipped with a universal wheel with braking function at its lower end. Each frame unit is equipped with a positioning component. The upper part of the frame unit is symmetrically equipped with two bevel gear transmission mechanisms. A handle is installed on the opposite side of the two bevel gear transmission mechanisms. Each bevel gear transmission mechanism is connected to a self-locking lifting mechanism on the same side. The handle drives the telescopic outrigger on the same side to rise or fall through the bevel gear transmission mechanism and the self-locking lifting mechanism. There are two fixing components, which are respectively located on top of the two frame units. The fixing components include a support frame and a clamp. The left and right sides of the support frame are connected to the frame unit through shock-absorbing supports. The clamp is detachably located on the top of the support frame.

2. The multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 1, characterized in that, The frame unit includes a crossbeam made of square tubing and two fixed legs. Both fixed legs are arranged vertically and their upper ends are welded to both ends of the crossbeam. The telescopic outrigger is a section of square tube adapted to the fixed outrigger. The upper end of the telescopic outrigger is located inside the corresponding fixed outrigger and slides with the fixed outrigger.

3. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 2, characterized in that, The fixed leg has a first through hole at the lower end, and the telescopic leg has multiple second through holes of the same size and position as the first through hole. All the second through holes on the telescopic leg are arranged at equal intervals in sequence. The positioning assembly includes a positioning rod and a locking nut. The positioning rod can be inserted into the first through hole, and the locking nut is screwed onto the end of the positioning rod to connect the telescopic outrigger to the fixed outrigger.

4. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 2, characterized in that, Two sets of connecting rods are located between two individual frame units and are arranged symmetrically from left to right. Each set of connecting rods includes at least one connecting rod. The connecting rods are arranged horizontally in the longitudinal direction, and the front and rear ends of each connecting rod are fixedly connected to two fixed legs on the same side.

5. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 2, characterized in that, The self-locking lifting mechanism includes a lead screw and a lead screw seat. The lead screw is vertically located inside the fixed support leg, and its upper end is rotatably connected to the fixed support leg through a bearing seat. The screw nut is fixedly embedded in the upper end of the telescopic outrigger, and the screw rod passes through the inner side of the screw nut, with its lower end located inside the telescopic outrigger. The screw rod and the screw nut are engaged by a self-locking thread pair.

6. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 5, characterized in that, The bevel gear transmission mechanism includes a first bevel gear, a second bevel gear, and a gear shaft. The gear shaft is transversely inserted through the inner side of the fixed support leg and rotates with it. Both ends of the gear shaft extend to the outside of the fixed support leg. The first bevel gear is fixedly mounted on the gear shaft, the second bevel gear is fixedly sleeved on the upper end of the lead screw and meshes with the first bevel gear, and the handle is fixedly mounted on the end of the gear shaft.

7. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 6, characterized in that, The bevel gear transmission mechanism also includes a transmission shaft, which is horizontally arranged below the crossbeam and rotatably connected to the vehicle frame unit through two bearing seats. The left and right ends of the transmission shaft are detachably connected to the corresponding ends of the two gear shafts through a coupling.

8. A multi-functional lifting and transport vehicle for autonomous underwater vehicles according to claim 1, characterized in that, The shock-absorbing support includes an upper cover, a lower cover, and multiple shock-absorbing springs. The bottom of the lower cover is fixed to the upper surface of the crossbeam by a mounting seat, and the inner side is a cavity with an open top. The upper outer wall of the lower cover has an annular limiting part. The inner side of the upper cover is a cavity with an open bottom. The upper cover is fitted over the lower cover, and its top is bolted to the support frame. The inner wall of the upper cover slides vertically with the side wall of the annular limiting part, and the lower end of the upper cover has an inward annular flange, which is located below the annular limiting part. Multiple shock-absorbing springs are regularly arranged inside the cavities of the upper and lower covers. Each spring is vertically positioned, with its upper end connected to the top wall of the upper cover via an upper spring seat, and its lower end connected to the bottom of the lower cover via a lower spring seat.

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