CN209617495U - An unmanned aerial vehicle lifting device - Google Patents

Abstract

The utility model discloses a kind of unmanned plane lifting device of energy speed change, including line roller and hawser, one end of the hawser is fixedly installed on online roller；It further include fulcrum bearing and driving device；The driving device includes gear transmission structure and driving motor；The line roller is arranged in fulcrum bearing, and line roller is rotated about axis；The driving motor is sequentially connected by gear transmission structure and line roller.Its structure is simple, easy to operate, can be realized the revolving speed that hawser payingoff speed is different from motor output, meanwhile, guarantee that the relative position of object is fixed, will not drop because of the effect of gravity, realizes the accurate promotion to object.

Description

An unmanned aerial vehicle lifting device

technical field

The utility model relates to a lifting device, in particular to a lifting device for an unmanned aerial vehicle.

Background technique

Drones are used to airdrop supplies to various appropriate occasions, such as: festivals, disaster relief, etc. It not only saves manpower, but also can ensure that the staff can avoid setting foot in dangerous areas and improve operation safety.

The patent document whose authorization notification number is CN206068158U discloses a lifting device based on an unmanned aerial vehicle. A lifting device is detachably and fixedly connected under the UAV. A cable is installed on the lifting frame of the lifting device. The cable is wound on the wire roller. The rollers are connected to a wired roller drive motor. The wire roller driving motor control module is used to control the rotation of the wire roller driving motor to take in and out the wire. But there is the problem that the cable retracting and unwinding linear speed is the same as the driving motor rotational speed.

Utility model content

The technical problem to be solved by the utility model is to provide an unmanned aerial vehicle lifting device capable of variable speed.

The technical solution adopted by the utility model to solve its technical problems is: a lifting device for unmanned aerial vehicles, including a wire roller and a cable, and one end of the cable is fixedly arranged on the wire roller; it also includes a support seat and a driving device;

The driving device includes a gear transmission structure and a driving motor;

The wire roller is arranged on the supporting seat, and the wire roller rotates around the axis;

The driving motor is connected with the wire roller through a gear transmission structure.

Further, the gear transmission structure includes a first gear, a second gear, a third gear and a fourth gear; the first gear meshes with the second gear, and the third gear meshes with the fourth gear;

The transmission ratio of the first gear and the second gear is multiplied by the transmission ratio of the third gear and the fourth gear, and the product of the two is greater than 1;

The first rotating shaft passes through the axis of the first gear and is fixedly connected with the first gear;

The second gear and the third gear are arranged coaxially, and a second rotating shaft is arranged on the axes of the second gear and the third gear;

A rotating seat is fixedly arranged on the supporting seat, and the rotating seats are respectively arranged at both ends of the second rotating shaft and connected in rotation with the second rotating shaft;

The wire roller is fixedly arranged on the axis of the fourth gear, and the wire roller is rotatably connected with the supporting seat.

Further, a through hole is also included, the through hole is set through the upper and lower sides of the supporting seat, the cable passes through the through hole, and the position where the cable is bound on the wire roller is located above the through hole.

Further, a counterweight for maintaining balance is installed on the support seat, and the counterweight and the driving device are arranged symmetrically about the center.

Further, the support seat is a box structure.

Further, it also includes a fixed plate and a connecting block;

The fixing plates are respectively arranged on both sides of the supporting seat of the box structure; one side of the connecting block is connected to the side wall of the supporting seat, and the other side is connected to the fixing plate.

Further, the driving motor is a stepping motor.

Compared with the prior art, the beneficial effect of the utility model is that the utility model provides a variable-speed lifting device for the drone. It has a simple structure and is easy to operate. It can realize that the cable pay-off speed is different from the output speed of the motor. At the same time, it can ensure that the relative position of the target object is fixed, and it will not fall due to the action of gravity, so as to achieve precise lifting of the target object.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of the utility model;

Reference signs: 1-support seat; 11-through hole; 2-driving motor; 3-first gear; 31-first rotating shaft; 4-second gear; 5-third gear; 51-second rotating shaft; 52 6-the fourth gear; 61-line roller; 7-counterweight; 8-cable; 9-fixed plate; 91-connection block.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in the accompanying drawings, a lifting device for unmanned aerial vehicles includes a wire roller 61 and a cable 8, and one end of the cable 8 is fixedly arranged on the wire roller 61; it also includes a bearing seat 1 and a driving device; the driving device includes a gear The transmission structure and the driving motor 2; the wire roller 61 is arranged on the supporting seat 1, and the wire roller 61 rotates around the axis; the driving motor 2 is connected to the wire roller 61 through a gear transmission structure.

During specific implementation, the support base 1 and the UAV frame can be fixedly connected, such as welding; they can also be detachably connected, such as connected by a clamp. The driving motor 2 drives the gear transmission structure to rotate, and the gear transmission structure realizes speed regulation through cooperation of multiple gears. The rotational speed output by the final gear transmission structure is transmitted to the cable 8 through the wire roller 61, thereby realizing the speed change of the lifting object. The gear transmission structure has high transmission efficiency, accurate transmission ratio and high speed regulation precision.

The gear transmission structure can be arranged in various ways, either a planetary gear train structure or a gear set meshing mode can be adopted. However, the structure of the planetary gear train is relatively complex, and the meshing precision between the various gears is required to be high. When a gear fails, it is difficult to replace and repair. In order to solve the above technical problems, the gear transmission structure includes a first gear 3, a second gear 4, a third gear 5 and a fourth gear 6; the first gear 3 meshes with the second gear 4, and the third gear 5 meshes with the fourth gear 6; the transmission ratio of the first gear 3 and the second gear 4 is multiplied by the transmission ratio of the third gear 5 and the fourth gear 6, and the product of the two is greater than 1; the first rotating shaft 31 passing through the axis of the first gear 3, and fixedly connected with the first gear 3; Two rotating shafts 51; the supporting seat 1 is fixedly provided with a rotating seat 52, and the rotating seats 52 are respectively arranged at both ends of the second rotating shaft 51, and are rotatably connected with the second rotating shaft 51; the wire roller 61 is fixed Set on the axis of the fourth gear 6 , the wire roller 61 is rotatably connected with the support base 1 . Under the action of the driving motor, the first rotating shaft 31 drives the first gear 3 to rotate, the second gear 4 meshed with the first gear 3 rotates, and the third gear 5 drives the fourth gear 6 to rotate. The angular velocity that the 3rd gear 5 that is arranged coaxially with the second gear 4 rotates is identical with the second gear 4, and the linear velocity of the second gear 4 is greater than the linear velocity of the 3rd gear 5, and the angular velocity that the line roller 61 rotates is the same as that of the fourth gear 6. The angular velocity of rotation is the same. The transmission ratio of the first gear 3 and the second gear 4 is multiplied by the transmission ratio of the third gear 5 and the fourth gear 6, and the product of the two transmission ratios is greater than 1, so that the speed reduction is realized. The rotating base 52 supports the second rotating shaft 51 .

The cable 8 can be lowered from the edge of the support base 1, but the cable 8 will be subjected to relatively large frictional resistance. In order to solve the above technical problems, preferably, a through hole 11 is also included, the through hole 11 is set through the upper and lower sides of the support seat 1, the cable 8 passes through the through hole 11, and the cable 8 is bound on the wire roller 61 The position is above the through hole 11 . The opposite surface of the support base 1 to the object to be lifted is the lower side, and the other side is the upper side. Hawser 8 is done in through hole 11 and moves in line, can not produce friction with supporting seat 1.

In order to ensure the balance of the support base 1 , preferably, the support base 1 is equipped with a balance weight 7 which maintains balance, and the balance weight 7 is arranged symmetrically to the center of the driving device.

The supporting base 1 can be a flat plate structure, but there is a disadvantage of unstable installation. In order to solve the above technical problems, preferably, the support seat 1 is a box structure. The side wall of the box structure plays a blocking and position-limiting role, and will not cause the drive motor 2, the gear transmission structure, and the counterweight 7 to slide off from the supporting seat 1, and the installation is stable.

In order to ensure that the support seat 1 of the box structure has a higher overall stress strength, preferably, it also includes a fixing plate 9 and a connecting block 91; the fixing plates 9 are respectively arranged on both sides of the support seat 1 of the box structure; One side of the connecting block 91 is connected to the side wall of the support seat 1 , and the other side is connected to the fixing plate 9 .

In order to control the rotation angle and speed of the first rotating shaft 31, preferably, the driving motor 2 is a stepping motor. The stepper motor can realize open-loop control, and control the angle and speed through the input pulse number and frequency of the control module without feedback signal.

The above is the specific implementation of the utility model, and it can be seen from the implementation process that the utility model provides a variable-speed unmanned aerial vehicle lifting device. It has a simple structure and is easy to operate. It can realize that the cable pay-off speed is different from the output speed of the motor. At the same time, it can ensure that the relative position of the target object is fixed, and it will not fall due to the action of gravity, so as to achieve precise lifting of the target object.

Claims (7)

1. A lifting device for an unmanned aerial vehicle, comprising a wire roller (61) and a cable (8), one end of the cable (8) is fixedly arranged on the wire roller (61); it is characterized in that: it also includes a support seat (1) and drives; The driving device includes a gear transmission structure and a driving motor (2); The wire roller (61) is arranged on the support seat (1), and the wire roller (61) rotates around the axis; The drive motor (2) is in transmission connection with the wire roller (61) through a gear transmission structure. 2. The UAV lifting device according to claim 1, characterized in that: the gear transmission structure includes a first gear (3), a second gear (4), a third gear (5) and a fourth gear ( 6); the first gear (3) meshes with the second gear (4), and the third gear (5) meshes with the fourth gear (6); The transmission ratio of the first gear (3) to the second gear (4) is multiplied by the transmission ratio of the third gear (5) to the fourth gear (6), and the product of the two is greater than 1; The first rotating shaft (31) passes through the axis of the first gear (3) and is fixedly connected with the first gear (3); The second gear (4) is arranged coaxially with the third gear (5), and a second rotating shaft (51) is arranged on the axes of the second gear (4) and the third gear (5); A rotating seat (52) is fixedly arranged on the supporting seat (1), and the rotating seat (52) is respectively arranged at both ends of the second rotating shaft (51), and is rotationally connected with the second rotating shaft (51); The wire roller (61) is fixedly arranged on the axis of the fourth gear (6), and the wire roller (61) is rotatably connected with the supporting seat (1). 3. The unmanned aerial vehicle lifting device according to any one of claims 1-2, characterized in that: it also includes a through hole (11), and the through hole (11) runs through the top of the support seat (1). , set below, the cable (8) passes through the through hole (11), and the position where the cable (8) is bound on the wire roller (61) is located above the through hole (11). 4. The unmanned aerial vehicle lifting device according to any one of claims 1-2, characterized in that: a counterweight (7) to maintain balance is installed on the support base (1), and the counterweight (7) is The weight (7) and the driving device are arranged symmetrically to the center. 5. The unmanned aerial vehicle lifting device according to any one of claims 1-2, characterized in that: the support seat (1) is a box structure. 6. The unmanned aerial vehicle lifting device as claimed in claim 5, characterized in that: it also includes a fixed plate (9) and a connecting block (91); The fixing plates (9) are respectively arranged on both sides of the supporting seat (1) of the box structure; one side of the connecting block (91) is connected to the side wall of the supporting seat (1), and the other side is connected to the fixing plate (9) . 7. The UAV lifting device according to claim 1, characterized in that: the driving motor (2) is a stepping motor.