1. A mobile balancing device of an unmanned helicopter comprises a machine body (1), and is characterized in that: a balance cabinet (2) is fixedly installed at the bottom of the machine body (1), a sub-control plate (5) is fixedly installed at the bottom of the balance cabinet (2), a plurality of vertical cylinders (10) are uniformly arranged inside the sub-control plate (5), and a plurality of bottom boxes (21) which correspond to the vertical cylinders (10) in position one by one are uniformly and fixedly installed at the bottom of the sub-control plate (5);

an inner groove (23) is formed in each of the bottom boxes (21), a fixing ring (24) is fixedly mounted on the inner wall of each inner groove (23), a rotating ring (26) is rotatably arranged on the outer wall of each fixing ring (24), a notch (25) is formed in the bottom of each fixing ring (24), a separation opening (27) matched with the notch (25) is formed in the outer wall of each rotating ring (26), a hanging ring (31) is movably arranged on the inner wall of each rotating ring (26), a lifting rope (32) is fixedly mounted at the bottom of each hanging ring (31), and goods are suspended at the bottom of each lifting rope (32);

the vertical cylinder (10) and the bottom box (21) are communicated with each other to form a vertical groove (22), and the control device is movably arranged in the vertical groove (22) and the bottom box (21) and drives the rotating ring (26) to rotate back and forth on the outer wall of the fixing ring (24).

2. The mobile balancing device of an unmanned helicopter of claim 1, wherein: the outer wall fixed mounting of solid fixed ring (24) has T type slide (28), the inner wall of swivel becket (26) seted up with T type slide (28) assorted T type spout (29), T type slide (28) slide and set up on the inner wall of T type spout (29).

3. The mobile balancing device of an unmanned helicopter of claim 1, wherein: the control device comprises an air pipe (18), a supporting plate (13) and a spring (19), the air pipe (18) is arranged on the inner wall of the vertical groove (22) in a sliding mode, the supporting plate (13) is arranged on the outer wall of the top of the air pipe (18), and the spring (19) is fixedly connected between the bottom of the supporting plate (13) and the inner bottom wall of the vertical cylinder (10);

the outer wall of the air pipe (18) and the outer wall of the rotating ring (26) are provided with teeth which are meshed with each other.

4. The mobile balancing device of an unmanned helicopter of claim 3, wherein: the inner wall of the vertical tube (10) is fixedly provided with a limiting block (14), and the limiting block (14) is positioned above the supporting plate (13).

5. The mobile balancing device of an unmanned helicopter of claim 4, wherein: the outer wall fixed mounting of vertical cylinder (10) has second electric putter (15), locking groove (16) have been seted up to the side of layer board (13), the outer wall card that the output shaft of second electric putter (15) passed vertical cylinder (10) is established on the inner wall of locking groove (16).

6. The mobile balancing device of an unmanned helicopter of claim 5, wherein: a stop block (12) is fixedly arranged at the top of the inner wall of the vertical tube (10), and a pressure plate (11) is movably arranged between the stop block (12) and the limiting block (14);

the top end of the air pipe (18) penetrates through the supporting plate (13) and extends to the upper side of the supporting plate (13), and a control valve (20) is arranged inside the bottom end of the air pipe (18).

7. The mobile balancing device of an unmanned helicopter of claim 6, wherein: a microswitch (17) is fixedly mounted at the center of the top of the supporting plate (13), a trigger head is arranged at the top of the microswitch (17), and the height of the trigger head is higher than that of the air pipe (18);

the output end of the microswitch (17) is electrically connected with the input end of the second electric push rod (15).

8. The mobile balancing device of an unmanned helicopter of claim 7, wherein: the two sides of the top of the sub-control plate (5) form slopes inclining downwards, and the top of the pressing plate (11) is provided with an inclined plane matched with the slopes.

9. The mobile balancing device of an unmanned helicopter of claim 8, wherein: a storage cylinder (3) is fixedly installed at the center of the top of the balance cabinet (2), the storage cylinder (3) is located inside the machine body (1), and a counterweight ball (4) is stacked inside the storage cylinder (3);

a ball carrying plate (6) is fixedly mounted at the center of the top of the sub-control plate (5), and the counterweight balls (4) are stacked on the top of the ball carrying plate (6);

the distance between the top of the ball bearing plate (6) and the inner top wall of the balance cabinet (2) is equal to the diameter of the counterweight ball (4);

ball outlets (30) matched with the counterweight balls (4) are formed in the left side and the right side of the balancing cabinet (2).

10. The mobile balancing device of an unmanned helicopter of claim 9, wherein: a first electric push rod (9) is fixedly installed on the inner side wall of the balance cabinet (2), a control plate (7) is fixedly installed at the top of an output shaft of the first electric push rod (9), a ball groove (8) is formed in the center of the control plate (7), the diameter of the ball groove (8) is larger than that of the counterweight ball (4), and the counterweight ball (4) is movably arranged inside the ball groove (8);

the lengths of the two sides of the control plate (7) are all larger than the diameter of the ball groove (8).

Background

The unmanned helicopter has unique flight performance and use value. Compared with the manned helicopter, the unmanned helicopter has the characteristics of no casualties, small volume, low manufacturing cost, strong battlefield viability and the like, and has incomparable superiority in many aspects; compared with a fixed wing unmanned aerial vehicle, the unmanned helicopter can take off and land vertically and hover in the air, flies in any direction, has a small take-off and landing field, and does not need to be provided with a complicated and large-volume launching and recovering system like the fixed wing unmanned aerial vehicle.

In the practical application in fields such as disaster monitoring, emergency rescue, rescue and relief work, unmanned helicopter often need carry and put in rescue goods and materials, just at this moment just need install goods on unmanned helicopter and put in the device, however, we find in practical application that traditional goods put in the device still have certain weak point, for example:

1. the traditional goods putting device not only has a complex structure, but also has the trouble of both goods hanging and putting, and has poor practicability;

2. various materials are hung at the bottom of the unmanned helicopter under the common condition, but not all the materials are thrown together but are thrown in batches when the materials are thrown, and when the materials are thrown in batches, if the materials at the left side of the bottom of the unmanned helicopter are thrown and the materials at the right side of the bottom of the unmanned helicopter are not thrown, the weight unbalance at the bottom of the unmanned helicopter is caused, so that the gravity center of the unmanned helicopter is changed, the flight attitude of the unmanned helicopter is forced to be continuously adjusted, the flight stability is influenced, and even the phenomena of runaway crash of the unmanned helicopter caused by unstable flight due to the change of the gravity center and the like can occur;

the Chinese patent publication number is: CN 108323494B's invention patent, it discloses an unmanned aerial vehicle medical kit, includes box, elasticity shower nozzle and is used for installing the fixing device on unmanned aerial vehicle with the medical kit, its characterized in that: the box is the back taper that the elastic plastic blowing was made, and the both sides inner wall of box is equipped with the gasbag respectively, and the intercommunication has the breather pipe between the gasbag, the breather pipe lateral wall is equipped with the cell type hole, is equipped with the baffle in the breather pipe, is equipped with the balancing weight on the baffle and stretches out the guide block of breather pipe through the cell type hole, and the baffle is sealed with the breather pipe, and the guide block is articulated with the one end of elasticity shower nozzle, and the other end of elasticity shower nozzle articulates in the bottom half. The pesticide spraying device can enable the pesticide box to be in a balanced state, reduce the shaking of the pesticide liquid, prevent the unmanned aerial vehicle from falling out of control due to unstable gravity center, and achieve the effect of uniformly spraying pesticide on crops;

in the above patent, although the chemical tank can be in a balanced state to reduce the sloshing of the chemical, the above-mentioned technical problem is not solved;

based on this, we propose a cargo delivery device for an unmanned helicopter, hopefully solve the shortcomings in the prior art.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the mobile balancing device of the unmanned helicopter, which has the advantages of being convenient for carrying and throwing goods and being capable of keeping the balance of the helicopter body after the goods are thrown.

(II) technical scheme

In order to realize the purpose of facilitating the mounting and releasing of goods, the invention provides the following technical scheme: a movable balancing device of an unmanned helicopter comprises a helicopter body, wherein a balancing cabinet is fixedly arranged at the bottom of the helicopter body, a sub-control plate is fixedly arranged at the bottom of the balancing cabinet, a plurality of vertical cylinders are uniformly arranged in the sub-control plate, and a plurality of bottom boxes which correspond to the vertical cylinders in position one by one are uniformly and fixedly arranged at the bottom of the sub-control plate;

an inner groove is formed in each of the bottom boxes, a fixing ring is fixedly mounted on the inner wall of each inner groove, a rotating ring is rotatably arranged on the outer wall of each fixing ring, a notch is formed in the bottom of each fixing ring, a separation opening matched with the notch is formed in the outer wall of each rotating ring, a hanging ring is movably arranged on the inner wall of each rotating ring, a lifting rope is fixedly mounted at the bottom of each hanging ring, and goods are hung at the bottom of each lifting rope;

the vertical cylinder and the bottom box are communicated with each other to form a vertical groove, and the control device is movably arranged in the vertical groove and the bottom box and drives the rotating ring to rotate back and forth on the outer wall of the fixing ring.

As a preferable technical scheme of the invention, a T-shaped sliding plate is fixedly arranged on the outer wall of the fixing ring, a T-shaped sliding groove matched with the T-shaped sliding plate is formed in the inner wall of the rotating ring, and the T-shaped sliding plate is arranged on the inner wall of the T-shaped sliding groove in a sliding manner.

As a preferred technical scheme of the invention, the control device comprises an air pipe, a supporting plate and a spring, wherein the air pipe is arranged on the inner wall of the vertical groove in a sliding manner, the supporting plate is arranged on the outer wall of the top of the air pipe, and the spring is fixedly connected between the bottom of the supporting plate and the inner bottom wall of the vertical cylinder;

and the outer wall of the air pipe and the outer wall of the rotating ring are provided with teeth which are meshed with each other.

As a preferred technical scheme of the invention, the inner wall of the vertical tube is fixedly provided with a limiting block, and the limiting block is positioned above the supporting plate.

As a preferable technical scheme of the present invention, a second electric push rod is fixedly installed on an outer wall of the vertical cylinder, a locking groove is formed in a side surface of the supporting plate, and an output shaft of the second electric push rod passes through the outer wall of the vertical cylinder and is clamped on an inner wall of the locking groove.

On the basis of the technical scheme, in order to achieve the purpose of keeping the balance of the body after the goods are put in, the invention also provides the following technical scheme: a stop block is fixedly arranged at the top of the inner wall of the vertical cylinder, and a pressure plate is movably arranged between the stop block and the limiting block;

the top end of the air pipe penetrates through the supporting plate and extends to the upper portion of the supporting plate, and a control valve is arranged inside the bottom end of the air pipe.

As a preferred technical scheme of the invention, a microswitch is fixedly arranged at the center of the top of the supporting plate, a trigger head is arranged at the top of the microswitch, and the height of the trigger head is higher than that of the top of the air pipe;

the output end of the microswitch is electrically connected with the input end of the second electric push rod.

As a preferable technical scheme of the invention, two sides of the top of the sub-control plate are both provided with a slope inclining downwards, and the top of the pressure plate is provided with an inclined plane matched with the slope.

As a preferred technical scheme of the invention, a storage cylinder is fixedly installed at the center of the top of the balance cabinet, the storage cylinder is positioned in the machine body, and counterweight balls are stacked in the storage cylinder;

the center of the top of the sub-control board is fixedly provided with a ball bearing board, and the counterweight balls are stacked on the top of the ball bearing board;

the distance between the top of the ball bearing plate and the inner top wall of the balance cabinet is equal to the diameter of the counterweight ball;

ball outlets matched with the balance weight balls are formed in the left side and the right side of the balance cabinet.

As a preferred technical scheme of the invention, a first electric push rod is fixedly installed on the inner side wall of the balance cabinet, a control panel is fixedly installed at the top of an output shaft of the first electric push rod, a ball groove is formed in the center of the control panel, the diameter of the ball groove is larger than that of a counterweight ball, and the counterweight ball is movably arranged in the ball groove;

the length of both sides of the control plate is larger than the diameter of the ball groove.

(III) advantageous effects

Compared with the prior art, the invention provides a mobile balancing device of an unmanned helicopter, which has the following beneficial effects:

1. the moving balancing device of the unmanned helicopter is characterized in that the outer wall of the air pipe and the outer wall of the rotating ring are provided with teeth which are meshed with each other, the rotating ring can be rotated on the fixing ring by controlling the air pipe to move through the meshed teeth, the air pipe and the supporting plate are jacked up by the spring in a common state, the output shaft of the second electric push rod extends out to be clamped in a locking groove on the side wall of the supporting plate, the position of the supporting plate is locked to prevent the supporting plate from moving downwards, a notch on the fixing ring and a breaking opening on the rotating ring are staggered with each other, goods are hung on the inner wall of the rotating ring at the notch through the hanging ring, when the goods need to be thrown in, the air pipe is controlled to move downwards, the air pipe moves downwards to drive the rotating ring to rotate through the meshed teeth, the breaking opening on the outer wall of the rotating ring is overlapped with the notch on the fixing ring, the goods can fall off through the notch and the breaking opening at the moment, the throwing in of the goods is finished, the throwing in of the goods, the structure is simpler, the operation and control are more convenient, and the effect of being convenient for mounting and putting goods is realized.

2. This unmanned helicopter's removal balancing unit, second electric putter's output shaft stretch out the card in the locking groove of layer board lateral wall, can lock the position of layer board, prevents that the layer board from moving down, to the carry stability more of goods, can effectually prevent that the goods accident from droing.

3. This unmanned helicopter's removal balancing unit, when needing to put in appointed goods, control the goods carry the trachea in the department the control valve open can, the control valve opens the back trachea and link up, this trachea top clamp plate has lost atmospheric pressure's support and can freely move downwards this moment, all the other clamp plates are because the control valve does not open, so can not move downwards under atmospheric pressure's support.

4. The movable balancing device of the unmanned helicopter is characterized in that a plurality of counterweight balls are stacked in a storage cylinder, the bottommost counterweight ball is clamped in a ball groove of a control plate, after a control valve at a designated position is opened, a first electric push rod is controlled to operate to drive the control plate at the top of an output shaft to move towards the control valve, because two sides of the top of a sub-control plate form downward-inclined slopes, the counterweight ball clamped on the inner wall of the ball groove can be separated from the ball groove and roll along the slopes when the control plate moves towards two sides, the counterweight ball can continuously roll along a pressure plate when rolling along the slopes and meets the pressure plate which does not open the control valve until the pressure plate which opens the control valve is met, when the counterweight ball is positioned on the pressure plate which opens the control valve, the pressure plate can be pressed downwards under the action of the gravity of the counterweight ball, so that the pressure plate moves downwards in a vertical cylinder, the pressure plate moves downwards in the vertical cylinder until the pressure plate is positioned at the top of a supporting plate, and the pressure plate positioned on the top of the supporting plate can trigger a micro switch firstly, the microswitch is triggered to control the output shaft of the second electric push rod to retract, the output shaft of the second electric push rod retracts to release the locking of the supporting plate, the supporting plate can be pressed down continuously by the pressing plate at the moment, the supporting plate moves downwards continuously to drive the air pipe to move downwards, the air pipe moves downwards to drive the rotating ring to rotate through the meshed teeth, a disengaging opening of the outer wall of the rotating ring rotates to coincide with an opening in the fixing ring, the goods can fall off through the opening and the disengaging opening at the moment, the putting of the goods is completed, the goods are put in, but a counterweight ball is also supplemented in the vertical cylinder, the weight of the goods is replaced, and therefore the effect that the balance of the machine body can be kept after the goods are put in is achieved.

5. The movable balancing device of the unmanned helicopter is characterized in that when the unmanned helicopter needs to reset (re-mount goods), firstly, a hanging ring for mounting the goods is placed at an opening and a separation opening, then an air pipe is pushed upwards to enable a rotating ring to rotate, the hanging ring is clamped again, when the rotating ring clamps the hanging ring again, a supporting plate is driven by the air pipe to be just positioned at the bottom of a limiting block, at the moment, compressed air is filled into the air pipe through the bottom of the air pipe, the compressed air filled in the air pipe is filled between a pressing plate and the supporting plate and can push the pressing plate to move upwards, the pressing plate moves upwards and is separated from a micro switch, the micro switch loses triggering to control an output shaft of a second electric push rod to extend out and is clamped in a locking groove again to limit the position of the supporting plate, the compressed air is continuously filled, the pressing plate also continuously moves upwards until the pressing plate moves to the top of a vertical cylinder (at the moment, a control valve is closed), and the pressing plate can push a counterweight ball to move upwards when moving upwards, when the clamp plate moved to the top of a vertical cylinder, the counterweight ball at the top of the clamp plate continued to roll along the branch control plate, finally discharged from the ball outlet, and was convenient for collect the counterweight ball, thereby, also accomplished the reset, and the goods were carried again and were accomplished.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a perspective view of a portion of the balancing cabinet of the present invention;

FIG. 3 is a front sectional view of a portion of the balancing cabinet of the present invention;

FIG. 4 is a perspective view of a sub-panel portion of the present invention;

FIG. 5 is a perspective view of a control plate portion of the present invention;

FIG. 6 is an enlarged view taken at A of FIG. 3 in accordance with the present invention;

FIG. 7 is a schematic view of the present invention with the rotating ring attached to the suspension ring;

FIG. 8 is a cross-sectional view of a portion of the chimney of the present invention;

FIG. 9 is an enlarged view at B of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic view of the present invention with the stationary and rotating rings separated;

in the figure: 1. a body; 2. a balancing cabinet; 3. a storage cylinder; 4. a counterweight ball; 5. dividing a control board; 6. a ball carrying plate; 7. a control panel; 8. a ball groove; 9. a first electric push rod; 10. a vertical cylinder; 11. pressing a plate; 12. a stopper; 13. a support plate; 14. a limiting block; 15. a second electric push rod; 16. a locking groove; 17. a microswitch; 18. an air tube; 19. a spring; 20. a control valve; 21. a bottom case; 22. a vertical slot; 23. an inner tank; 24. a fixing ring; 25. opening the gap; 26. a rotating ring; 27. a detachment port; 28. a T-shaped sliding plate; 29. a T-shaped chute; 30. a ball outlet; 31. hanging a ring; 32. a lifting rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows:

referring to fig. 1, 2, 3, 6, 7, 8, 9 and 10, a mobile balancing device of an unmanned helicopter includes a machine body 1, a balancing cabinet 2 is fixedly installed at the bottom of the machine body 1, a sub-control board 5 is fixedly installed at the bottom of the balancing cabinet 2, a plurality of vertical cylinders 10 are uniformly arranged inside the sub-control board 5, and a plurality of bottom boxes 21 corresponding to the vertical cylinders 10 in position one by one are uniformly and fixedly installed at the bottom of the sub-control board 5;

the inner grooves 23 are formed in the bottom boxes 21, the inner walls of the inner grooves 23 are fixedly provided with fixing rings 24, the outer walls of the fixing rings 24 are rotatably provided with rotating rings 26, the outer walls of the fixing rings 24 are fixedly provided with T-shaped sliding plates 28, the inner walls of the rotating rings 26 are provided with T-shaped sliding grooves 29 matched with the T-shaped sliding plates 28, the T-shaped sliding plates 28 are arranged on the inner walls of the T-shaped sliding grooves 29 in a sliding mode, the fixing rings 24 are connected with the rotating rings 26 through the T-shaped sliding plates 28 and the T-shaped sliding grooves 29, and rotation is more stable and smooth;

a notch 25 is formed at the bottom of the fixed ring 24, a separation opening 27 matched with the notch 25 is formed in the outer wall of the rotating ring 26, a hanging ring 31 is movably arranged on the inner wall of the rotating ring 26, a lifting rope 32 is fixedly arranged at the bottom of the hanging ring 31, goods are suspended at the bottom of the lifting rope 32, the goods are hung on the hanging ring 31 through the lifting rope 32, and the hanging ring 31 is clamped on the inner wall of the rotating ring 26;

a vertical groove 22 is formed between the vertical barrel 10 and the bottom box 21 in a penetrating manner, a control device is movably arranged in the vertical groove 22 and the bottom box 21 and drives the rotating ring 26 to rotate back and forth on the outer wall of the fixing ring 24, the control device comprises an air pipe 18, a supporting plate 13 and a spring 19, the air pipe 18 is arranged on the inner wall of the vertical groove 22 in a sliding manner, the supporting plate 13 is arranged on the outer wall of the top of the air pipe 18, the spring 19 is fixedly connected between the bottom of the supporting plate 13 and the inner bottom wall of the vertical barrel 10, teeth which are mutually meshed are arranged on the outer wall of the air pipe 18 and the outer wall of the rotating ring 26, and the rotating ring 26 can be driven to rotate by the teeth when the air pipe 18 moves;

a limiting block 14 is fixedly arranged on the inner wall of the vertical tube 10, the limiting block 14 is positioned above the supporting plate 13, and the limiting block 14 is used for limiting the position of the supporting plate 13 and limiting the highest moving height of the supporting plate;

a second electric push rod 15 is fixedly installed on the outer wall of the vertical barrel 10, a locking groove 16 is formed in the side face of the supporting plate 13, an output shaft of the second electric push rod 15 penetrates through the outer wall of the vertical barrel 10 and is clamped on the inner wall of the locking groove 16, the output shaft of the second electric push rod 15 extends out and is clamped in the locking groove 16 in the side wall of the supporting plate 13, the position of the supporting plate 13 can be locked, the supporting plate 13 is prevented from moving downwards, the hanging of goods is more stable, and the goods can be effectively prevented from falling off accidentally;

the air pipe 18 is controlled to move, the rotating ring 26 can be enabled to rotate on the fixing ring 24 through the meshed teeth, in a normal state, the air pipe 18 and the supporting plate 13 are jacked up by the spring 19, the output shaft of the second electric push rod 15 extends out to be clamped in the locking groove 16 in the side wall of the supporting plate 13, the position of the supporting plate 13 is locked to prevent the supporting plate 13 from moving downwards, the notch 25 in the fixing ring 24 and the disengaging opening 27 in the rotating ring 26 are staggered, and cargoes are hung on the inner wall of the rotating ring 26 at the position of the notch 25 through the hanging ring 31;

when the goods need to be put in, control trachea 18 move down can, trachea 18 moves down and drives swivel 26 rotatory through the tooth of meshing, swivel 26 rotates break away from the opening 27 of its outer wall and the opening 25 on the solid fixed ring 24 and coincides mutually, the goods can drop through opening 25 and break away from opening 27 this moment, accomplish the input of goods, not only the structure is simpler, control also more convenient, the effect of being convenient for carry and putting in the goods has been realized.

Example two:

referring to fig. 1-10, on the basis of the first embodiment, a stopper 12 is fixedly installed at the top of the inner wall of the vertical tube 10, a pressing plate 11 is movably installed between the stopper 12 and the limiting block 14, the distance between the stopper 12 and the limiting block 14 is matched with the diameter of the counterweight ball 4 (except for the vertical tube 10 at the most lateral side), and the height of the spring 19 can be set according to actual requirements;

the top end of the air pipe 18 penetrates through the supporting plate 13 and extends to the upper part of the supporting plate 13, the control valve 20 is arranged inside the bottom end of the air pipe 18, when a specified cargo needs to be thrown, the control valve 20 in the air pipe 18 at the position where the cargo is hung is controlled to be opened, the air pipe 18 is communicated after the control valve 20 is opened, at the moment, the pressing plate 11 above the air pipe 18 loses the support of air pressure and can freely move downwards, and the rest pressing plates 11 cannot move downwards under the support of the air pressure because the control valve 20 is not opened;

a microswitch 17 is fixedly mounted at the center of the top of the supporting plate 13, a trigger head is arranged at the top of the microswitch 17, the height of the trigger head is higher than that of the air pipe 18, and the height of the microswitch 17 can be set according to actual requirements;

the output end of the microswitch 17 is electrically connected with the input end of the second electric push rod 15, the microswitch 17 is triggered to control the retraction of the output shaft of the second electric push rod 15, and the microswitch 17 is not triggered to control the extension of the output shaft of the second electric push rod 15;

two sides of the top of the sub-control plate 5 are both provided with a downward inclined slope, and the top of the pressing plate 11 is provided with an inclined plane matched with the inclined slope;

a storage barrel 3 is fixedly installed at the center of the top of the balance cabinet 2, the storage barrel 3 is located inside the machine body 1, counterweight balls 4 are stacked inside the storage barrel 3, a ball carrying plate 6 is fixedly installed at the center of the top of the sub-control plate 5, and the counterweight balls 4 are stacked on the top of the ball carrying plate 6;

the distance between the top of the ball bearing plate 6 and the inner top wall of the balancing cabinet 2 is equal to the diameter of the counterweight ball 4;

a first electric push rod 9 is fixedly installed on the inner side wall of the balance cabinet 2, a control plate 7 is fixedly installed at the top of an output shaft of the first electric push rod 9, a ball groove 8 is formed in the center of the control plate 7, the diameter of the ball groove 8 is larger than that of the counterweight ball 4, the counterweight ball 4 is movably arranged inside the ball groove 8, and the lengths of two sides of the control plate 7 are larger than that of the ball groove 8;

a plurality of counterweight balls 4 are stacked in the storage barrel 3, the bottommost counterweight ball 4 is clamped in a ball groove 8 of a control plate 7, after the control valve 20 at a specified position is opened, a first electric push rod 9 is controlled to operate to enable the control plate 7 at the top of an output shaft of the control plate to move towards the control valve 20, and because two sides of the top of a sub-control plate 5 form downward-inclined slopes, the counterweight ball 4 clamped on the inner wall of the ball groove 8 can be separated from the ball groove 8 and roll along the slopes when the control plate 7 moves towards two sides, and when the counterweight ball 4 rolls along the slopes, a pressing plate 11 which does not open the control valve 20 can continue to roll along the pressing plate 11 until the pressing plate 11 which opens the control valve 20 is met;

when the counterweight ball 4 is positioned on the pressure plate 11 of the opening control valve 20, the pressure plate 11 is pressed down under the action of the gravity of the counterweight ball, so that the pressure plate 11 moves downwards in the vertical cylinder 10, the pressure plate 11 moves downwards in the vertical cylinder 10 until the pressure plate 11 is positioned at the top of the supporting plate 13, the pressure plate 11 positioned on the top of the supporting plate 13 triggers the microswitch 17 firstly, the microswitch 17 is triggered to control the output shaft of the second electric push rod 15 to retract, the output shaft of the second electric push rod 15 retracts to release the locking of the supporting plate 13, at the moment, the supporting plate 13 is pressed down by the pressure plate 11 continuously, the supporting plate 13 moves downwards to drive the air pipe 18 to move downwards, the air pipe 18 moves downwards to drive the rotating ring 26 to rotate through the meshed teeth, the disengaging opening 27 of the outer wall of the rotating ring 26 is overlapped with the notch 25 on the fixed ring 24, at the moment, the goods can fall through the notch 25 and the disengaging opening 27, the throwing of the goods is finished, the throwing of the goods, although the goods are thrown, but a counterweight ball 4 is also supplemented in the vertical cylinder 10 to replace the weight of the goods, thereby achieving the effect of keeping the balance of the machine body 1 after the goods are put;

when resetting (re-hanging goods) is needed, firstly placing the hanging ring 31 for hanging goods at the opening 25 and the disengaging opening 27, then pushing up the air pipe 18 to enable the rotating ring 26 to rotate, re-clamping the hanging ring 31, when the rotating ring 26 re-clamps the hanging ring 31, the supporting plate 13 is driven by the air pipe 18 to be just positioned at the bottom of the limiting block 14, at the moment, compressed air is filled into the air pipe 18 through the bottom of the air pipe 18, the compressed air filled in the air pipe 18 is filled between the pressing plate 11 and the supporting plate 13, the pressing plate 11 is pushed to move upwards, the pressing plate 11 moves upwards to be disengaged from the micro switch 17, the micro switch 17 loses triggering to control the output shaft of the second electric push rod 15 to extend out, the locking groove 16 is clamped in again, the position of the supporting plate 13 is limited, the compressed air is continuously filled, the pressing plate 11 also continues to move upwards until the top of the vertical cylinder 10 is moved (at the moment, the control valve 20 is closed), the pressing plate 11 also pushes the counterweight ball 4 to move upwards when moving upwards, when the pressing plate 11 moves to the top of the vertical cylinder 10, the counterweight balls 4 at the top of the pressing plate 11 can continue to roll along the branch control plate 5, the ball outlet 30 matched with the counterweight balls 4 is formed in the left side and the right side of the balance cabinet 2, and finally the rolling counterweight balls 4 are discharged from the ball outlet 30 to be convenient for collecting the counterweight balls, so that the resetting is also finished, and the goods are hung and carried again.

The working principle and the using process of the invention are as follows:

a plurality of counterweight balls 4 are stacked in the storage barrel 3, the bottommost counterweight ball 4 is clamped in a ball groove 8 of a control plate 7, after the control valve 20 at a specified position is opened, a first electric push rod 9 is controlled to operate to enable the control plate 7 at the top of an output shaft of the control plate to move towards the control valve 20, and because two sides of the top of a sub-control plate 5 form downward-inclined slopes, the counterweight ball 4 clamped on the inner wall of the ball groove 8 can be separated from the ball groove 8 and roll along the slopes when the control plate 7 moves towards two sides, and when the counterweight ball 4 rolls along the slopes, a pressing plate 11 which does not open the control valve 20 can continue to roll along the pressing plate 11 until the pressing plate 11 which opens the control valve 20 is met;

when the counterweight ball 4 is positioned on the pressure plate 11 of the opening control valve 20, the pressure plate 11 is pressed down under the action of the gravity of the counterweight ball, so that the pressure plate 11 moves downwards in the vertical cylinder 10, the pressure plate 11 moves downwards in the vertical cylinder 10 until the pressure plate 11 is positioned at the top of the supporting plate 13, the pressure plate 11 positioned on the top of the supporting plate 13 triggers the microswitch 17 firstly, the microswitch 17 is triggered to control the output shaft of the second electric push rod 15 to retract, the output shaft of the second electric push rod 15 retracts to release the locking of the supporting plate 13, at the moment, the supporting plate 13 is pressed down by the pressure plate 11 continuously, the supporting plate 13 moves downwards to drive the air pipe 18 to move downwards, the air pipe 18 moves downwards to drive the rotating ring 26 to rotate through the meshed teeth, the disengaging opening 27 of the outer wall of the rotating ring 26 is overlapped with the notch 25 on the fixed ring 24, at the moment, the goods can fall through the notch 25 and the disengaging opening 27, the throwing of the goods is finished, the throwing of the goods, although the goods are thrown, but a counterweight ball 4 is also supplemented in the vertical cylinder 10 to replace the weight of the goods, thereby achieving the effect of keeping the balance of the machine body 1 after the goods are put;

when resetting (re-hanging goods) is needed, firstly placing the hanging ring 31 for hanging goods at the opening 25 and the disengaging opening 27, then pushing up the air pipe 18 to enable the rotating ring 26 to rotate, re-clamping the hanging ring 31, when the rotating ring 26 re-clamps the hanging ring 31, the supporting plate 13 is driven by the air pipe 18 to be just positioned at the bottom of the limiting block 14, at the moment, compressed air is filled into the air pipe 18 through the bottom of the air pipe 18, the filled compressed air is filled between the pressing plate 11 and the supporting plate 13, and can push the pressing plate 11 to move upwards, the pressing plate 11 moves upwards and is firstly disengaged from the micro switch 17, the micro switch 17 loses triggering to control the extension of the output shaft of the second electric push rod 15, is clamped in the locking groove 16 again, the position of the supporting plate 13 is limited, the compressed air is continuously filled, the pressing plate 11 also continues to move upwards until the pressing plate moves to the top of the vertical cylinder 10 (at the moment, the control valve 20 is closed), and the pressing plate 11 can also push the counterweight ball 4 to move upwards when moving upwards, when the pressing plate 11 moves to the top of the vertical cylinder 10, the counterweight balls 4 at the top of the pressing plate 11 can continue to roll along the branch control plate 5, the ball outlet 30 matched with the counterweight balls 4 is formed in the left side and the right side of the balance cabinet 2, and finally the rolling counterweight balls 4 are discharged from the ball outlet 30 to be convenient for collecting the counterweight balls, so that the resetting is also finished, and the goods are hung and carried again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.