Rope transmission mechanism for double-rotor unmanned helicopter

Abstract

The utility model discloses a rope transfer mechanism for a double-rotor unmanned helicopter, which relates to the technical field of unmanned helicopters, and comprises a structural box body, a guide mechanism, a transmission hole, a transmission shaft, a transmission shaft, a transmission shaft and a transmission shaft, the guide mechanism is fixedly arranged above the transmission hole; and the protection pipe is fixedly connected to the outer wall of the bottom end of the structural box body, the interior of the protection pipe communicates with the transmission hole, a protection ring is movably arranged in the protection pipe, and a reset spring is fixedly arranged between the protection ring and the protection pipe. The protection pipe is installed at the rope outlet position at the bottom end of the outer wall of the structural box body, the protection ring is arranged in the protection pipe in a matched mode, and the protection ring and the protection pipe are connected through the reset spring, so that a rope can be buffered in the shaking process, the damage degree of the rope in the shaking process is reduced, and the service life of the rope is prolonged. The protection effect on the rope is improved, and the service life of the rope is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned helicopters, in particular to a rope transmission mechanism for a double-rotor unmanned helicopter. Background Art

[0002] The rope transmission device on a traditional unmanned helicopter is generally composed of a motor and a rope winch. By commanding and controlling the rope winding device on the unmanned helicopter, the motor or motor is used to release or retract the rope during the rotation of the winch, so that the transportation or rescue work can proceed smoothly.

[0003] In the prior art, for example, a utility model patent with authorization announcement number CN219904727U discloses a rope transmission device for a twin-rotor unmanned helicopter. Through the structural design of the anti-wear device, when the motor inside the structural box is working, the output shaft drives the central shaft to rotate, so that the alloy rope is released or retracted. Under the action of the rotating shaft, the released or retracted alloy rope moves back and forth through the surface of the arc-shaped smooth sheet through the transmission connection port, and with the cooperation of the No. 1 spring, the arc-shaped smooth sheet can maintain an elastic working state within a certain range, thereby realizing the protection function of the rope, avoiding the phenomenon of friction between the rope and related components during the action process, accelerating the operation speed, extending the service life of the rope to a certain extent, and reducing the replacement cost.

[0004] The above-mentioned rope transmission device also has the following problems when in use: when the device is in use, the rope will shake during the lifting process. When the shaking amplitude is large, the rope is easy to contact with the structural box, which can easily cause the rope to be worn, or even the rope to be cut or severed, thereby affecting the safety of the rope use. Utility Model Content

[0005] The utility model aims to provide a rope transmission mechanism for a twin-rotor unmanned helicopter to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a rope transmission mechanism for a dual-rotor unmanned helicopter, comprising a structural box, wherein a transmission cavity is provided inside the structural box, and further comprising:

[0007] A guiding mechanism, wherein a transmission hole communicating with the outside of the structural box is provided at the bottom of the transmission cavity, and the guiding mechanism is fixedly arranged above the transmission hole, and is used for guiding the retracting and releasing process;

[0008] A protection tube is fixedly connected to the outer wall of the bottom end of the structural box, the interior of the protection tube is connected to the transmission hole, a protection ring is movably provided inside the protection tube, and a reset spring is fixedly provided between the protection ring and the protection tube.

[0009] Preferably, the return springs are multiple and arranged in a ring array, and both ends of the return springs are fixedly connected to the opposite sides of the protective ring and the protective tube respectively.

[0010] Preferably, a rotatable auxiliary ring is movably provided in the middle of the inner side of the protective ring, and arc chamfers are provided at both ends of the inner side of the protective ring and at the top and bottom ends of the auxiliary ring.

[0011] Preferably, a mounting groove is provided in the middle of the inner side of the protective ring, a ball bearing is fixedly connected to the inner side of the mounting groove, the inner ring of the ball bearing is fixedly connected to the outer wall of the auxiliary ring, and arc chamfers are provided on the top and bottom of the inner side of the auxiliary ring.

[0012] Preferably, the guiding mechanism comprises two wheel frames, the bottoms of the two wheel frames are respectively fixedly connected to the inner bottom of the transfer cavity, and both ends between the two wheel frames are rotatably connected with guide wheels.

[0013] Preferably, an annular groove is provided in the middle of the guide wheel, the width of the annular groove gradually decreases from the outer side to the inner side of the guide wheel, and the inner side wall of the annular groove is in an arc shape.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model installs a protection tube at the rope outlet position at the bottom end of the outer wall of the structural box body, cooperates with the setting of a protection ring in the protection tube, and connects the protection ring and the protection tube through a reset spring, so that the rope can be buffered during the shaking process, and at the same time reduces the degree of damage to the rope during the shaking process, thereby realizing protection against the rope shaking process, helping to improve the protection effect of the rope and prolong the service life of the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the guiding mechanism of the utility model.

[0018] Figure 3 It is a schematic diagram of the top view of the guide wheel of the utility model.

[0019] Figure 4 It is a schematic diagram of the top cross-sectional structure of the protection tube of the utility model.

[0020] Figure 5 It is a front cross-sectional structural schematic diagram of the protective ring of the utility model.

[0021] In the figure: 100, structural box; 101, transfer cavity; 200, guiding mechanism; 201, wheel frame; 202, guide wheel; 203, annular groove; 300, protective tube; 301, protective ring; 302, return spring; 303, circular chamfer 1; 304, auxiliary ring; 305, ball bearing; 306, circular chamfer 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-5 The rope transmission mechanism for a twin-rotor unmanned helicopter shown in the figure includes a structural box 100, a transmission cavity 101 is provided inside the structural box 100, and the transmission cavity 101 inside the structural box 100 is equipped with a motor, a central axis, an alloy rope and other structures, which can control the retraction and release of the alloy rope, and facilitate the transportation of objects. For details, reference can be made to the structure and use principle disclosed in a rope transmission device for a twin-rotor unmanned helicopter disclosed in the utility model patent CN219904727U, which also includes a guiding mechanism 200 and a protective tube 300. A transmission hole connected to the outside of the structural box 100 is opened at the bottom of the transmission cavity 101, and the guiding mechanism 200 is fixedly arranged at a position above the transmission hole. The guiding mechanism 200 is used for guiding the rope retraction and release process. One end of the rope passes through the guiding mechanism 200 and then passes through the structural box 100 from the transmission hole position. Through the assembly of the guiding mechanism 200, the rope is placed on the reel of the central axis. When winding, it can have a guiding function to keep the rope in the vertical direction. The protective tube 300 is fixedly connected to the outer wall of the bottom end of the structural box 100, and the interior of the protective tube 300 is connected to the transmission hole. A protective ring 301 is movably provided inside the protective tube 300, and a reset spring 302 is fixedly provided between the protective ring 301 and the protective tube 300; wherein, the reset spring 302 is multiple and arranged in a ring array, and the two ends of the reset spring 302 are respectively fixedly connected to the protective ring 301 and the opposite side of the protective tube 300; one end of the rope passes through the inside of the protective tube 300 and the inside of the protective ring 301. When the rope shakes, it squeezes the protective ring 301, and the protective ring 301 squeezes the reset spring 302. By utilizing the elastic and telescopic characteristics of the reset spring 302, the shaking of the protective ring 301 can be buffered, the buffering amplitude of the rope can be reduced, and the impact force on the rope during the shaking process can be reduced, thereby achieving a protective effect on the rope.

[0024] It should be noted that a rotatable auxiliary ring 304 is movably provided in the middle of the inner side of the protective ring 301, and arc chamfers 303 are provided at the top and bottom of the auxiliary ring 304 and at the two ends of the inner side of the protective ring 301. The arc chamfers 303 are provided at the top and bottom positions of the inner side of the protective ring 301, so that the contact between the rope and the inner wall of the protective ring 301 is smoother, thereby reducing the wear of the protective ring 301 on the rope and enhancing the protection of the rope; a mounting groove is provided in the middle of the inner side of the protective ring 301, and a ball bearing 305 is fixedly connected to the inner side of the mounting groove, and the inner ring of the ball bearing 305 is fixedly connected to the outer wall of the auxiliary ring 304. The top and bottom of the side are provided with arc chamfers 306, and the auxiliary ring 304 can rotate in the protective ring 301 through the ball bearing 305, so that the auxiliary ring 304 can be driven to rotate when the rope shakes and deviates in the auxiliary ring 304, so that the friction resistance between the auxiliary ring 304 and the rope can be reduced, so that when the auxiliary ring 304 achieves a buffering effect on the rope, the friction on the rope can be reduced, thereby further improving the protection of the rope. In addition, the setting of the arc chamfer 306 on the auxiliary ring 304 can cooperate with the arc chamfer 303 to make the contact surface of the rope smoother and reduce the influence of sharp angles on the rope.

[0025] In a preferred embodiment, the guiding mechanism 200 includes two wheel frames 201, the bottoms of the two wheel frames 201 are respectively fixedly connected to the inner bottom of the transfer cavity 101, and the two ends between the two wheel frames 201 are rotatably connected with guide wheels 202. An annular groove 203 is provided in the middle of the guide wheel 202. The width of the annular groove 203 gradually decreases from the outer side to the inner side of the guide wheel 202, and the inner side wall of the annular groove 203 is arc-shaped. The setting of the annular groove 203 on the guide wheel 202, combined with the arc side wall of the annular groove 203 that is concave from the outer side to the inner side, can adapt to the limiting guidance of ropes of various sizes, while also reducing damage to the ropes, thereby further enhancing the protective effect on the ropes.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rope transmission mechanism for a dual-rotor unmanned helicopter, comprising a structural box (100), wherein a transmission cavity (101) is provided inside the structural box (100), characterized in that: Also includes: A guiding mechanism (200), wherein a transmission hole communicating with the outside of the structural box (100) is opened at the bottom of the transmission cavity (101), and the guiding mechanism (200) is fixedly arranged above the transmission hole, and the guiding mechanism (200) is used for guiding the retracting and releasing process; A protective tube (300), the protective tube (300) is fixedly connected to the outer wall of the bottom end of the structural box (100), the interior of the protective tube (300) is connected to the transmission hole, a protective ring (301) is movably provided inside the protective tube (300), and a return spring (302) is fixedly provided between the protective ring (301) and the protective tube (300).

2. The rope transmission mechanism for a twin-rotor unmanned helicopter according to claim 1, characterized in that: The return springs (302) are multiple and arranged in a ring array, and the two ends of the return springs (302) are respectively fixedly connected to the protection ring (301) and the opposite side of the protection tube (300).

3. The rope transmission mechanism for a twin-rotor unmanned helicopter according to claim 2, characterized in that: A rotatable auxiliary ring (304) is movably provided in the middle of the inner side of the protection ring (301), and arc chamfers (303) are provided at the two inner ends of the protection ring (301) and at the top and bottom ends of the auxiliary ring (304).

4. The rope transmission mechanism for a twin-rotor unmanned helicopter according to claim 3, characterized in that: A mounting groove is provided in the middle of the inner side of the protective ring (301), a ball bearing (305) is fixedly connected to the inner side of the mounting groove, the inner ring of the ball bearing (305) is fixedly connected to the outer wall of the auxiliary ring (304), and arc chamfers (306) are provided at the top and bottom of the inner side of the auxiliary ring (304).

5. The rope transmission mechanism for a twin-rotor unmanned helicopter according to claim 1, characterized in that: The guide mechanism (200) comprises two wheel frames (201), the bottoms of the two wheel frames (201) are respectively fixedly connected to the inner bottom of the transfer cavity (101), and both ends between the two wheel frames (201) are rotatably connected to guide wheels (202).

6. The rope transmission mechanism for a twin-rotor unmanned helicopter according to claim 5, characterized in that: An annular groove (203) is provided in the middle of the guide wheel (202), the width of the annular groove (203) gradually decreases from the outer side to the inner side of the guide wheel (202), and the inner side wall of the annular groove (203) is in an arc shape.

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