Electric winch for aircraft-mounted rack

Abstract

An electric winch for an airborne pylon effectively solves the problem that there is no cable cutting device between the existing winch and the hook, and when the winch cable unexpectedly encounters greater resistance, the hook and the cable cannot be smoothly retracted. The electric winch comprises a drum, end covers arranged on the left and right sides of the drum, and a control box arranged on one side of the winch, and is characterized in that the drum is rotatably connected to the two end covers, one of the end covers is coaxially fixed with an electric slip ring, and the electric slip ring penetrates into the interior of the drum, and the other end cover is coaxially fixed with a motor, and a support plate is coaxially fixed inside the drum. The utility model has an ingenious structure and is easy to use. Through the arrangement of a load-bearing cable, an electric slip ring and an electromagnetic hook, the electromagnetic hook is controlled by wired transmission. Compared with wireless transmission, wired transmission is more stable, and the electric slip ring can also solve the problem of transmitting power and signals between rotating parts and stationary parts.

Description

Technical Field

[0001] The utility model relates to the technical field of airborne delivery equipment, in particular to an electric winch of an airborne pylon. Background Art

[0002] A winch is a small-sized lifting device that uses a drum to wind a wire rope or chain to lift or pull heavy objects. It is also called a winch. The winch can lift vertically, pull horizontally or tilt heavy objects. There are three types of winches: manual winches, electric winches and hydraulic winches.

[0003] In the military field, winches are also equipped on helicopters for military exercises or the delivery of materials in disaster relief operations. However, existing airborne winches still have the following problems:

[0004] 1. Conventional winches are only connected to the hook through a sling and do not have the function of remotely controlling the hook. However, the use of wireless transmission is not only costly, but also has problems such as unstable signals in some special places.

[0005] 2. There is no cable cutting device between the existing winch and the hook. When the winch cable unexpectedly encounters greater resistance, the hook and cable cannot be smoothly retracted, which affects the exercise mission or rescue work. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide an electric winch for an airborne pylon, which effectively solves the problems mentioned in the background technology.

[0007] The technical solution is that the utility model comprises a drum, end covers arranged on the left and right sides of the drum, and a control box arranged on one side of the winch, and is characterized in that the drum is rotatably connected with the two end covers, one of the end covers is coaxially fixed with an electric slip ring, and the electric slip ring penetrates into the interior of the drum, and the other end cover is coaxially fixed with a motor, and a support plate is coaxially fixed inside the drum, and the support plate divides the drum into two cavities, and the electric slip ring and the motor are respectively located in the two cavities, and a reducer is coaxially fixed at one end of the motor located in the cavity, and the output shaft of the reducer is coaxially fixed with the support plate, and the motor and the electric slip ring are respectively electrically connected to the control box;

[0008] A spiral groove is provided on the outer wall of the reel, a load-bearing cable is placed inside the spiral groove, one end of the load-bearing cable is fixedly connected to the shell of the reel, and the other end of the load-bearing cable is fixedly connected to an electromagnetic hook;

[0009] Four connecting rods are fixed between the two end covers, one of which is coaxially fixed with a pressure roller, which contacts the load-bearing cable, and two connecting rods are slidably connected with a same moving frame, which is located at the lower side of the reel, and an arc block is fixed on the moving frame, which matches the threaded groove, and the load-bearing cable passes through the moving frame and is fixedly connected with the electromagnetic hook.

[0010] Preferably, a cable cutting assembly is provided inside the movable frame, and the cable cutting assembly includes a fixed rod fixed on the movable frame, the fixed rod is provided with a through hole, the load-bearing cable is located in the through hole, one end of the fixed rod is coaxially provided with a placement cavity passing through the through hole, a blade sliding back and forth is provided in the placement cavity, a throwing bomb located on one side of the blade is provided in the placement cavity, and the throwing bomb is electrically connected to the control box.

[0011] Preferably, a counter is fixed on the support plate, the counter is electrically connected to the electric slip ring, a connecting shaft penetrating the support plate is coaxially fixed on the counter, a transmission gear is coaxially fixed on the end of the connecting shaft away from the counter, a gear ring is coaxially fixed on the housing of the reducer, and the transmission gear is meshed with the gear ring.

[0012] Preferably, the load-bearing cable comprises a steel cable in an inner core and four connecting wires wound around an outer ring of the steel cable, the outside of the steel cable and the connecting wires are provided with rubber, and the four connecting wires pass through the drum and are electrically connected to the electric slip ring.

[0013] Preferably, a guide assembly is fixed below the movable frame, and the guide assembly includes mounting plates fixed on both sides of the bottom of the movable frame, two rollers are rotatably connected between the two mounting plates, and the load-bearing cable is located between the two rollers.

[0014] Preferably, a cylinder located on one side of the blade is fixed inside the placement cavity, and the cylinder is electrically connected to the control box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the settings of load-bearing cables, electric slip rings and electromagnetic hooks, the electromagnetic hook is controlled by wired transmission. Compared with wireless transmission, wired transmission is more stable, and electric slip rings can also solve the problem of transmitting power and signals between rotating parts and stationary parts.

[0017] 2. Through the settings of spiral grooves, movable frames and arc blocks, the load-bearing cable is wound on the drum in a single circle. When the drum rotates, the arc block and the movable frame move left and right under the action of the spiral groove, so that the movable frame and the load-bearing cable are always synchronized. Compared with the traditional method of using cables to drive the movable frame to move, this method has higher synchronization, will not cause wear to the load-bearing cable itself, and improves its service life. At the same time, the load-bearing cable is always inside the spiral groove during the process of retraction and release, and problems such as cable entanglement will not occur, thereby ensuring the stability of the objects during the hanging process.

[0018] 3. Through the settings of the bomb, blade and placement cavity, when the load-bearing cable encounters greater resistance during the recovery process, the user can directly control the explosion of the bomb through the control box. At this time, the blade squeezes the load-bearing cable under the action of strong thrust, and finally achieves the effect of cutting the cable. This method is faster and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the spiral groove in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the mobile frame in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the fixing rod in the utility model.

[0024] Figure 6 It is a cross-sectional view of the fixing rod in the utility model.

[0025] Figure 7 It is a structural schematic diagram of the counter in the utility model.

[0026] Figure 8 This utility model Figure 7 A schematic diagram of the enlarged structure at point A in the middle.

[0027] Fig. 9 It is a structural schematic diagram of the roller in the utility model.

[0028] Explanation of the symbols in the schematic diagram:

[0029] 10. Reel; 101. Support plate; 102. Spiral groove; 11. End cover; 12. Electric slip ring; 13. Motor; 14. Connecting rod; 15. Pressure roller; 16. Counter; 161. Connecting shaft; 17. Transmission gear; 20. Reducer; 21. Gear ring; 30. Load-bearing cable; 40. Electromagnetic hook; 50. Moving frame; 51. Arc block; 52. Mounting plate; 53. Roller; 60. Fixed rod; 601. Through hole; 602. Placement cavity; 61. Blade. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] Depend on Figures 1 to 3 The invention provides a structure including a drum 10, end covers 11 disposed on the left and right sides of the drum 10, and a control box disposed on one side of the winch. A control unit is disposed in the control box. The drum 10 is rotatably connected to the two end covers 11. An electric slip ring 12 is coaxially fixed on one of the end covers 11. The electric slip ring 12 is a prior art electromechanical device specially used to solve the problem of transmitting power and signals between rotating parts and stationary parts. It allows current and data signals to be smoothly transmitted in the case of unlimited continuous rotation of 360 degrees without interruption or damage to the transmission due to winding or kinking of the wires. It will not be described in detail here. The electric slip ring 12 penetrates the interior of the drum 10. The other end cover 11 A motor 13 is coaxially fixed on the upper surface, a support plate 101 is coaxially fixed inside the reel 10, the support plate 101 divides the reel 10 into two cavities, the electric slip ring 12 and the motor 13 are respectively located inside the two cavities, a reducer 20 is coaxially fixed at one end of the motor 13 located in the cavity, the output shaft of the reducer 20 is coaxially fixed to the support plate 101, the motor 13 and the electric slip ring 12 are respectively electrically connected to the control box, the user can operate the control panel on the control box, the control box carries a power supply connected to the electric slip ring 12, when the user starts the motor 13 through the control box, the reel 10 is driven to rotate under the deceleration of the reducer 20;

[0033] A spiral groove 102 is provided on the outer wall of the drum 10, and a load-bearing cable 30 is placed inside the spiral groove 102. One end of the load-bearing cable 30 is fixedly connected to the shell of the drum 10, and the other end of the load-bearing cable 30 is fixedly connected to an electromagnetic hook 40. The electromagnetic hook 40 has an automatic unhooking function. The load-bearing cable 30 includes a steel cable in the inner core and four connecting wires wound around the outer ring of the steel cable. The four connecting wires are electrically connected to the electromagnetic hook 40. The user can control the electromagnetic hook 40 to automatically unhook by operating the control box. Rubber is provided on the outside of the steel cable and the connecting wire to protect the internal connecting wire. The four connecting wires penetrate the drum 10 and are electrically connected to the electric slip ring 12. Through the arrangement of the load-bearing cable 30, the electric slip ring 12 and the electromagnetic hook 40, the electromagnetic hook 40 is controlled by wired transmission. Compared with the wireless transmission method, wired transmission is more stable, and the electric slip ring 12 can also solve the problem of transmitting power and signals between rotating parts and stationary parts.

[0034] Furthermore, in consideration of the problems of cable deviation and entanglement during the process of paying out and taking up the load-bearing cable 30, four connecting rods 14 are fixed between the two end covers 11, one of the connecting rods 14 is coaxially fixed with a pressure roller 15, and the pressure roller 15 is in contact with the load-bearing cable 30, and the two connecting rods 14 are slidably connected with the same moving frame 50, and the moving frame 50 is located at the lower side of the reel 10, and an arc block 51 is fixed on the moving frame 50, and the arc block 51 matches the threaded groove, and the load-bearing cable 30 passes through the moving frame 50 and is fixedly connected to the electromagnetic hook 40, and the spiral groove 102, the movable frame 50 and the arc block 51 are arranged, the load-bearing cable 30 is wound on the drum 10 in a single circle, and when the drum 10 rotates, the arc block 51 and the movable frame 50 move left and right under the action of the spiral groove 102, so as to always ensure that the movable frame 50 and the load-bearing cable 30 are in synchronization. Compared with the traditional method of driving the movable frame 50 to move by cables, this method has higher synchronization, will not cause wear to the load-bearing cable 30 itself, and improves the service life. At the same time, the load-bearing cable 30 is always inside the spiral groove 102 during the process of retracting and releasing, and problems such as cable entanglement will not occur, thereby ensuring the stability of the objects during the hanging process.

[0035] refer to Figures 3 to 6As shown, considering that during the execution of the mission, the environment in which materials are dropped may be in a place with many trees, when the load-bearing cable 30 is entangled with the branches, it is difficult to manually remove it, which affects the subsequent mission and the evacuation of the helicopter. A cable cutting assembly is arranged inside the mobile frame 50, and the cable cutting assembly includes a fixing rod 60 fixed on the mobile frame 50, and a through hole 601 is opened on the fixing rod 60. The load-bearing cable 30 is located in the through hole 601. One end of the fixing rod 60 is coaxially opened with a placement cavity 602 that passes through the through hole 601, and a blade 61 that slides forward and backward is arranged in the placement cavity 602. A throwing bomb located on one side of the blade 61 is arranged in the placement cavity 602, and the throwing bomb is electrically connected to the control box. Through the arrangement of the throwing bomb, the blade 61 and the placement cavity 602, when the load-bearing cable 30 is subjected to greater resistance during the recovery process, the user can directly control the throwing bomb to explode through the control box. At this time, the blade 61 squeezes the load-bearing cable 30 under the action of a strong thrust, and finally achieves the effect of cutting the cable. This method is faster and more efficient.

[0036] refer to Figure 7 and Figure 8 As shown, in order to accurately control the delivery speed and delivery height, a counter 16 is fixed on the support plate 101, and the counter 16 is electrically connected to the electric slip ring 12. A connecting shaft 161 penetrating the support plate 101 is coaxially fixed on the counter 16, and a transmission gear 17 is coaxially fixed on the end of the connecting shaft 161 away from the counter 16. A gear ring 21 is coaxially fixed on the outer shell of the reducer 20, and the transmission gear 17 is meshed with the gear ring 21. The reducer 20 is a prior art, and the specific cooperation process with the counter 16 is as follows: two sets of transmission gears 17 are arranged inside the reducer 20. When the motor 13 is started, the output shaft of the reducer 20 rotates, but the housing of the reducer 20 is in a stationary state, and the counter 16 rotates with the reel 10. After the counter 16 rotates a full circle in the reel 10, the transmission gear 17 also rotates a full circle, and the counter 16 counts a circle. The counter 16 is electrically connected to the control box, and the user can directly observe the height of the material descent and the delivery speed through the display panel provided on the control box.

[0037] refer to Fig. 9 As shown, taking into account the swinging of the load-bearing cable 30 during the process of retracting and releasing, a guide assembly is fixed under the movable frame 50, and the guide assembly includes mounting plates 52 fixed on both sides of the bottom of the movable frame 50, and two rollers 53 are rotatably connected between the two mounting plates 52, and the load-bearing cable 30 is located between the two rollers 53. The mounting plates 52 and the rollers 53 are arranged to ensure that the load-bearing cable 30 can better enter the interior of the spiral groove 102 during the process of retracting and releasing the load-bearing cable 30.

[0038] Embodiment 2:

[0039] A cylinder located on one side of the blade 61 is fixed inside the placement cavity 602, and the cylinder is electrically connected to the control box. The difference between Example 1 and Example 2 is that the power transmission of the blade 61 is different. The method in which the explosion of the throwing bomb drives the blade 61 to cut the cable is faster, but the throwing bomb can also be replaced with a cylinder, and the cylinder drives the blade 61 to squeeze the cable. Although it takes a certain amount of time to cut compared with the throwing bomb method, after cutting, it only needs to control the cylinder to reset. The throwing bomb still needs to be replaced with a new one manually. Each has its own advantages.

[0040] When the utility model is used:

[0041] First, when the helicopter arrives at the designated location, the user starts the motor 13 through the control box, and the drum 10 rotates to drive the hook and the materials to move downward. During the process of hanging the materials, the user can observe the delivery length (delivery height) and delivery speed transmitted by the counter 16 on the display panel on the control box;

[0042] Then, after the material is lowered, the user controls the electromagnetic hook 40 to automatically unhook through the control box. After the material is detached, the motor 13 reverses to drive the reel 10 to reel in the wire. During the process of reeling in and releasing the wire, the load-bearing cable 30 is always located inside the spiral groove 102.

[0043] Finally, when the load-bearing cable 30 or the hook is subjected to a large external resistance, feedback is given to the control system to energize the projectile, and the projectile explodes, driving the blade 61 to cut the cable.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric winch for an airborne pylon, comprising a drum (10), end covers (11) disposed on the left and right sides of the drum (10), and a control box connected to the winch, characterized in that: The reel (10) is rotatably connected to two end covers (11), one of the end covers (11) is coaxially fixed with an electric slip ring (12), the electric slip ring (12) penetrates into the interior of the reel (10), the other end cover (11) is coaxially fixed with a motor (13), the interior of the reel (10) is coaxially fixed with a support plate (101), the support plate (101) divides the reel (10) into two cavities, the electric slip ring (12) and the motor (13) are respectively located in the interior of the two cavities, a reducer (20) is coaxially fixed to one end of the motor (13) located in the cavity, the output shaft of the reducer (20) is coaxially fixed with the support plate (101), and the motor (13) and the electric slip ring (12) are respectively electrically connected to a control box; A spiral groove (102) is provided on the outer wall of the reel (10), a load-bearing cable (30) is placed inside the spiral groove (102), one end of the load-bearing cable (30) is fixedly connected to the shell of the reel (10), and the other end of the load-bearing cable (30) is fixedly connected to an electromagnetic hook (40); Four connecting rods (14) are fixed between the two end covers (11), a pressure roller (15) is coaxially fixed on one of the connecting rods (14), and the pressure roller (15) is in contact with the load-bearing cable (30). The two connecting rods (14) are slidably connected to the same moving frame (50), and the moving frame (50) is located at the lower side of the reel (10). An arc block (51) is fixed on the moving frame (50), and the arc block (51) matches the threaded groove. The load-bearing cable (30) passes through the moving frame (50) and is fixedly connected to the electromagnetic hook (40).

2. The electric winch of the airborne pylon according to claim 1, characterized in that: A cable cutting assembly is arranged inside the movable frame (50), and the cable cutting assembly comprises a fixing rod (60) fixed on the movable frame (50), a through hole (601) is provided on the fixing rod (60), the load-bearing cable (30) is located in the through hole (601), a placement cavity (602) penetrating the through hole (601) is coaxially provided at one end of the fixing rod (60), a blade (61) sliding forward and backward is arranged in the placement cavity (602), a throwing bomb located on one side of the blade (61) is arranged in the placement cavity (602), and the throwing bomb is electrically connected to a control box.

3. The electric winch of the airborne pylon according to claim 1, characterized in that: A counter (16) is fixed on the support plate (101), the counter (16) is electrically connected to the electric slip ring (12), a connecting shaft (161) penetrating the support plate (101) is coaxially fixed on the counter (16), a transmission gear (17) is coaxially fixed on one end of the connecting shaft (161) away from the counter (16), a gear ring (21) is coaxially fixed on the housing of the reducer (20), and the transmission gear (17) meshes with the gear ring (21).

4. The electric winch of an airborne pylon according to claim 1, characterized in that: The load-bearing cable (30) comprises a steel cable in an inner core and four connecting wires wound around the outer ring of the steel cable, the outside of the steel cable and the connecting wires are provided with rubber, and the four connecting wires penetrate the drum (10) and are electrically connected to the electric slip ring (12).

5. The electric winch of an airborne pylon according to claim 1, characterized in that: A guide assembly is fixed below the movable frame (50), and the guide assembly comprises mounting plates (52) fixed on both sides of the bottom of the movable frame (50), two rollers (53) are rotatably connected between the two mounting plates (52), and the load-bearing cable (30) is located between the two rollers (53).

6. The electric winch of an airborne pylon according to claim 2, characterized in that: A cylinder located on one side of the blade (61) is fixed inside the placement cavity (602), and the cylinder is electrically connected to the control box.

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