Multifunctional skid type traction device for helicopter

Abstract

The invention relates to the technical field of traction equipment for skid type helicopters, in particular to a multifunctional traction device for a skid type helicopter. According to the technical scheme, the helicopter tractor comprises a helicopter tractor body and two sets of helicopter dragging wheels, the helicopter tractor body comprises a tractor body assembly, two sets of balance lifting assemblies are installed above the tractor body assembly, an upper cross beam assembly is arranged above the two sets of balance lifting assemblies, and grabbing hook assemblies are installed at the two ends of the upper cross beam assembly; a front wheel installation cross beam assembly is installed on one side of the vehicle body assembly, a traction rod assembly is arranged on the side, away from the helicopter tractor, of the front wheel installation cross beam assembly, and a hydraulic jacking assembly is installed above the helicopter tractor. The helicopter towing wheel has the function of carrying out compass calibration on a helicopter, and meanwhile, the helicopter towing wheel can conveniently move in a short distance along with a helicopter towing vehicle in a non-use state.

Description

Technical Field

[0001] The invention relates to the technical field of traction equipment for a skid-type helicopter, and in particular to a multifunctional traction device for a skid-type helicopter. Background Art

[0002] The landing gear of helicopters is generally divided into two types: skid type and wheel type. The skid type landing gear is generally used for light helicopters. It has a simple and reliable structure, is easy to maintain, and can also be used as a buffer for unpowered autorotation landing. However, it is very inconvenient to move the helicopter. It is necessary to install wheels for moving the helicopter separately to move the helicopter conveniently. When the skid type helicopter moves over a short distance, it needs to be transported by a tug wheel or a flatbed truck. The tug wheel is inconvenient to carry when in use, and is not capable of carrying out compass calibration and other tasks. For this reason, we specially propose a multifunctional skid type helicopter traction device. Summary of the invention

[0003] The purpose of the present invention is to provide a multifunctional skid-type helicopter traction device in view of the problems existing in the background technology.

[0004] The technical solution of the present invention is as follows: a multifunctional skid-type helicopter traction device comprises a helicopter tractor and two sets of tug wheels, the helicopter tractor comprises a body assembly, two sets of balancing lifting assemblies are installed above the body assembly, upper crossbeam assemblies are arranged above the two sets of balancing lifting assemblies, grab hook assemblies are installed at both ends of the upper crossbeam assemblies, a front wheel mounting crossbeam assembly is installed on one side of the body assembly, a traction rod assembly is arranged on the side of the front wheel mounting crossbeam assembly away from the helicopter tractor, a hydraulic jacking assembly is installed above the helicopter tractor, two sets of fixed-angle rear wheels are arranged on the side of the body assembly away from the front wheel mounting crossbeam assembly, and the mounting end of the tug wheel is installed corresponding to the skid of the helicopter.

[0005] Preferably, the vehicle body assembly includes a vehicle body frame, and the inner circle of the vehicle body frame is respectively provided with two groups of vertical beams and one group of horizontal beams, and an inclined groove is provided on the helicopter tractor on one side of the two groups of vertical beams away from each other, and a tug wheel frame is provided on the one side of the two groups of vertical beams away from each other, and the tug wheel frame is arranged in an "L" shape, and the tug wheel is placed above the helicopter tractor and fits with one side of the tug wheel frame when in the storage state.

[0006] Preferably, the balanced lifting assembly includes a support seat, a rotating plate is provided on one side of the support seat, a transfer seat is provided on the end of the rotating plate away from the support seat, a balancing connecting rod is connected between the support seat and the transfer seat, connecting pull rods are provided on both sides of the rotating plate, and the connecting pull rods are arranged in a "V" shape, and a guide frame is provided on the side of the support seat away from the rotating plate, and the support seat and the guide frame are respectively installed corresponding to the two sides of the cross beam on the side close to each other, and the guide frame is arranged in a "U" shape, and a sliding rod is connected between the two groups of connecting pull rods, and the sliding rod and the inner side of the guide frame are in contact with each other, and a limiting plate is provided on one side of the guide frame, and a limiting ring is installed on one side of the limiting plate, and the inner ring of the limiting ring is provided with a screw, and one end of the screw is connected to an anti-slip block.

[0007] Preferably, the upper crossbeam assembly includes two groups of upper crossbeams, and the two groups of upper crossbeams are respectively installed corresponding to one side of the adapter seat, and a connecting shaft is arranged between the two groups of upper crossbeams. The open ends of the upper crossbeams are each provided with a copper sleeve, and the inner ring of the copper sleeve is provided with a telescopic rod, and the outer ring of the telescopic rod is installed with a limiting sleeve, and the outer ring of the limiting sleeve is in contact with the inner ring of the upper crossbeam.

[0008] Preferably, the grab hook assembly includes a connecting joint installed on the top of the telescopic rod, a screw rod is connected to the connecting joint, a grab hook frame is installed below the screw rod, a stabilizing plate is installed in the grab hook frame, the bottom of the stabilizing plate is arranged in an arc shape, two groups of L-shaped grooves are opened on the grab hook frame, two groups of movable rods are installed above the stabilizing plate, both ends of the movable rods are installed corresponding to the L-shaped grooves, a connecting column is installed on the grab hook frame, and a reset spring is installed between one end of the connecting column and a group of movable rods.

[0009] Preferably, the front wheel mounting cross beam assembly includes a front wheel steering seat bracket, the front wheel steering seat bracket is arranged in a bow shape, one end of the front wheel steering seat bracket is installed corresponding to one side of the vehicle body frame, a reinforcing rib plate is arranged between the front wheel steering seat bracket and the vehicle body frame, a steering seat is installed at the other end of the front wheel steering seat bracket, and a front wheel is arranged below the steering seat.

[0010] Preferably, the traction rod assembly includes a secondary rod, a quick-release pin is connected between one end of the secondary rod and the steering seat, a flip hinge seat is provided at the other end of the secondary rod, a main rod is installed on the other side of the flip hinge seat, and a buffer mechanism is connected to the end of the main rod away from the flip hinge seat, the buffer mechanism includes a buffer cylinder installed corresponding to one end of the main rod, the outer ring of the buffer cylinder is sleeved with a buffer inner rod, a buffer spring is installed between the outer ring of the buffer cylinder and the inner ring of the buffer inner rod, a head nut is installed at the top end of the buffer cylinder, the head nut is installed corresponding to the inner ring of the buffer inner rod, and a traction ring is installed at the top end of the buffer inner rod.

[0011] Preferably, the hydraulic jacking assembly includes an oil cylinder installed above the helicopter tractor, the output end of the oil cylinder is installed corresponding to the connecting shaft, a hand pump and an oil tank are respectively installed on one side of the vehicle body assembly, connecting oil pipes for connecting and communicating are installed between the hand pump and the oil tank and between the hand pump and the oil cylinder, and a hand crank is installed on one side of the hand pump.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] 1. The front wheel of the helicopter tractor is a universal structure through the steering seat, and the fixed-angle rear wheel is equipped with a rotating angle plate to achieve angle adjustment. Therefore, through the coordinated use of the tractor wheel and the ground turntable, it has the function of carrying out helicopter compass calibration;

[0014] 2. The two sets of balanced lifting components set between the vehicle frame and the upper crossbeam assembly in the helicopter tractor cooperate with the hydraulic jacking components to greatly ensure the horizontal lifting function and safety and stability of the upper crossbeam assembly;

[0015] 3. The upper crossbeam assembly consists of an upper crossbeam and a telescopic rod. The tractor uses the front telescopic rod to fold in to reduce the width of the tractor and avoid interference with the helicopter skid. After pushing it under the fuselage, pull out the telescopic rod to facilitate alignment with the skid position. A copper sleeve is provided between the telescopic rod and the fixed rod to reduce sliding friction and wear.

[0016] 4. The grab hook assembly can be adjusted up and down. After the grab hook is fixed with the bolts on the skid, tighten the grab hook assembly to prevent the grab hook assembly from detaching from the skid bolts and reduce the interface clearance, thereby increasing the effective lifting height of the tractor.

[0017] 5. The traction rod of the helicopter tractor is equipped with a buffer mechanism, which can effectively reduce the impact caused by starting, accelerating or braking during the traction process;

[0018] 6. The helicopter tractor is equipped with a tug wheel storage area to facilitate the tug wheel to move short distances with the helicopter tractor when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of some regions of the present invention;

[0020] Figure 2 for Figure 1 Another perspective structural diagram of;

[0021] Figure 3 It is a schematic diagram of the overall structure of the present invention in use state;

[0022] Figure 4 It is a schematic diagram of the overall storage state structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the partial area structure of the helicopter tractor and the front wheel mounting cross beam assembly in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of a partial area of ​​the balancing lifting assembly in the present invention;

[0025] Figure 7 A partial cross-sectional view of an upper crossbeam assembly in the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of a partial area of ​​the grab hook assembly in the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of a part of the hydraulic jacking assembly in the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of a part of the traction rod assembly in the present invention;

[0029] Fig.11 for Fig.10 A schematic diagram of the enlarged structure of the knot;

[0030] Fig.12 for Fig.10 Enlarged structural diagram of the knot at point B.

[0031] Figure numerals: 1, helicopter tractor; 11, vehicle body assembly; 111, vehicle body frame; 112, tractor wheel frame; 12, balance lifting assembly; 121, support seat; 122, rotating plate; 123, adapter seat; 124, connecting rod; 125, guide frame; 126, limit plate; 127, limit ring; 128, screw; 129, anti-slip block; 13, upper crossbeam assembly; 131, upper crossbeam; 132, connecting shaft; 133, copper sleeve; 134, telescopic rod; 135, limit sleeve; 14, grab hook assembly; 141, connecting joint; 142, screw rod; 143, grab hook frame; 144, stabilizing plate; 145 , movable rod; 146, connecting column; 147, return spring; 2, tractor wheel; 3, front wheel mounting crossbeam assembly; 31, front wheel steering seat bracket; 32, reinforcing rib plate; 33, steering seat; 34, front wheel; 4, traction rod assembly; 41, auxiliary rod; 42, flip hinge seat; 43, main rod; 44, buffer mechanism; 441, buffer cylinder; 442, buffer inner rod; 443, buffer spring; 444, head nut; 45, traction ring; 5, hydraulic jacking assembly; 51, oil cylinder; 52, hand pump; 53, oil tank; 54, connecting oil pipe; 55, hand crank; 6, fixed-angle rear wheel; 7, balance connecting rod; 8, sliding rod. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Example

[0034] like Figure 1-5 As shown, a multifunctional skid-type helicopter traction device proposed by the present invention comprises a helicopter tractor 1 and two sets of tug wheels 2. The helicopter tractor 1 comprises a body assembly 11, and the body assembly 11 comprises a body frame 111. The body frame 111 is arranged in a rectangular frame shape. Two sets of vertical beams and one set of horizontal beams are respectively arranged in the inner circle of the body frame 111. One end of the vertical beam is fixedly connected to the body frame 111, and the other end of the vertical beam is fixedly connected to the horizontal beam. The two ends of the horizontal beam are respectively fixedly connected to the inner walls of the body frame 111 on both sides. A tug wheel frame 112 is provided on one side of the two sets of vertical beams away from each other. One side of the tug wheel frame 112 is fixedly connected to the vehicle frame 111. The arrangement of the cross beam and the vertical beam can enhance the overall stability of the vehicle frame 111. The tug wheel frame 112 is arranged in an "L" shape. When the tug wheel 2 is in the storage state, it is placed above the helicopter tractor 1 and fits with one side of the tug wheel frame 112. The arrangement of the tug wheel frame 112 can make the tug wheel 2 more stably placed in the storage state. The arrangement of the vehicle body assembly 11 can stably carry the helicopter.

[0035] like Figure 6As shown, two groups of balanced lifting components 12 are installed above the vehicle body component 11, and the balanced lifting components 12 include a support seat 121. The mounting end of the support seat 121 is installed corresponding to one side of the cross beam. A rotating plate 122 is arranged on one side of the support seat 121. The rotating plate 122 is rotatably connected to the support seat 121. An inclined groove is provided on one side of the two groups of vertical beams away from each other and located on the helicopter tractor 1. The setting of the inclined groove can prevent the rotating plate 122 from interfering with the vehicle body frame 111 when moving. An adapter seat 123 is arranged on one end of the rotating plate 122 away from the support seat 121. The rotating plate 122 and the adapter seat 123 are connected to each other. Rotationally connected, a balancing link 7 is connected between the support seat 121 and the adapter seat 123, and the two ends of the balancing link 7 are rotatably connected to the adapter seat 123 and the support seat 121 respectively. The setting of the balancing link 7 can guide and limit the rotating plate 122 through the support seat 121 and the adapter seat 123 when it moves. Connecting rods 124 are provided on both sides of the rotating plate 122. The connecting rods 124 are rotatably connected to the rotating plate 122, and the connecting rods 124 are arranged in a "V" shape. A guide frame 125 is provided on the side of the support seat 121 away from the rotating plate 122, and the support seat 121 and the guide frame 125 are close to each other. They are respectively installed corresponding to the two sides of the beam, the support seat 121 and the guide frame 125 are fixedly connected to the beam, the guide frame 125 is set in a "U" shape, a slide bar 8 is connected between the two sets of connecting rods 124, the two ends of the slide bar 8 are fixedly connected to the connecting rod 124, the slide bar 8 and the inner side of the guide frame 125 fit each other, the setting of the slide bar 8 can guide the movement of the connecting rod 124 through the guide frame 125, the slide bar 8 is slidably connected to the guide frame 125, a limiting plate 126 is set on one side of the guide frame 125, one side of the limiting plate 126 is fixedly connected to the guide frame 125, and a limiting plate 126 is installed on one side Ring 127, the limiting ring 127 is rotatably connected with the limiting plate 126, a threaded hole 1 is provided on the limiting plate 126, the inner hole of the limiting ring 127 is installed corresponding to the position of the threaded hole 1, the inner ring of the limiting ring 127 is provided with a screw 128, the screw 128 is threadedly connected with the limiting ring 127 and the threaded hole 1 respectively, one end of the screw 128 is connected with an anti-slip block 129, one side of the anti-slip block 129 is fixedly connected with the screw 128, the setting of the screw 128 can push the slide bar 8, so that the rotating plate 122 pushes the upper beam assembly 13 upward through the adapter 123, thereby achieving the purpose of lifting and transferring the helicopter;

[0036] The operator rotates the limit ring 127, so that the limit ring 127 drives the screw rod 128 to move into the guide frame 125, so that the top end of the screw rod 128 pushes the slide bar 8, so that the slide bar 8 drives the rotating plate 122 to move through the connecting rod 124, so that the rotating plate 122 pushes the adapter 123, thereby lifting the height of the upper beam assembly 13;

[0037] like Fig. 9As shown, a hydraulic lifting assembly 5 is installed above the helicopter tractor 1, and the hydraulic lifting assembly 5 includes an oil cylinder 51 installed above the helicopter tractor 1, the mounting end of the oil cylinder 51 is fixedly connected to one side of the vehicle body frame 111, the output end of the oil cylinder 51 is correspondingly installed with the connecting shaft 132, and the output end of the oil cylinder 51 is rotatably connected to the connecting shaft 132, and a hand pump 52 and an oil tank 53 are respectively installed on one side of the vehicle body assembly 11, and a mounting plate is fixedly installed on one side of the vehicle body assembly 11, and the mounting ends of the hand pump 52 and the oil tank 53 are respectively fixedly connected to the mounting plate, and a connection for connecting is installed between the hand pump 52 and the oil tank 53 and between the hand pump 52 and the oil cylinder 51. The connecting oil pipes 54 are connected in series, and the two ends of one group of connecting oil pipes 54 are respectively fixedly connected to the hand pump 52 and the oil tank 53, and the two ends of the other group of connecting oil pipes 54 are respectively fixedly connected to the hand pump 52 and the oil cylinder 51. A hand crank 55 is installed on one side of the hand pump 52, and the hand crank 55 is installed corresponding to the hand pump 52. The setting of the hand crank 55 can operate the hand pump 52. The setting of the hydraulic jacking assembly 5 can cooperate with the balance lifting assembly 12 to make the upper beam assembly 13 more stable during the jacking operation, so that when the helicopter is transported by using the device, the stability of the helicopter can be better guaranteed, and the safety during transportation can be improved;

[0038] The operator lifts and presses the hand crank 55 up and down, so that the hand pump 52 compresses the hydraulic oil in the oil tank 53 to the oil cylinder 51 through the connecting oil pipe 54, so that the output end of the oil cylinder 51 pushes the upper cross beam assembly 13, so that the hydraulic jacking assembly 5 and the balance lifting assembly 12 can cooperate with each other, so that the balance lifting assembly 12 and the hydraulic jacking assembly 5 stably lift the upper cross beam assembly 13, thereby ensuring the stability of the upper cross beam assembly 13 when carrying the helicopter;

[0039] like Figure 7As shown, an upper crossbeam assembly 13 is arranged above the two groups of balanced lifting assemblies 12, and the upper crossbeam assembly 13 includes two groups of upper crossbeams 131. The two groups of upper crossbeams 131 are respectively installed corresponding to one side of the adapter 123, and one side of the copper sleeve 133 is fixedly connected to the adapter 123. A connecting shaft 132 is arranged between the two groups of upper crossbeams 131, and both ends of the connecting shaft 132 are respectively fixedly connected to the two groups of upper crossbeams 131. Copper sleeves 133 are arranged at the open ends of the upper crossbeams 131, and the outer ring of the copper sleeve 133 is fixedly connected to the inner ring of the upper crossbeam 131. The arrangement of the copper sleeve 133 can reduce the friction between the telescopic rod 134 and the upper crossbeam 131, thereby avoiding the friction deformation between the telescopic rod 134 and the upper crossbeam 131, and the inner ring of the copper sleeve 133 is arranged The telescopic rod 134, the outer circumference of the telescopic rod 134 and the inner circle of the copper sleeve 133 are mutually fitted, the telescopic rod 134 and the copper sleeve 133 are slidably connected, the setting of the telescopic rod 134 can be retracted into the upper crossbeam 131 when the device is in the storage state, thereby reducing the space occupied by the device, the outer circle of the telescopic rod 134 is installed with a limiting sleeve 135, the limiting sleeve 135 is fixedly connected to the telescopic rod 134, the outer circle of the limiting sleeve 135 and the inner circle of the upper crossbeam 131 are mutually fitted, the setting of the limiting sleeve 135 can limit the telescopic rod 134 when it is pulled out, thereby preventing the telescopic rod 134 from being separated from the upper crossbeam 131 during movement, and the setting of the upper crossbeam assembly 13 can stably support the helicopter skid, thereby allowing the helicopter skid to leave the ground;

[0040] When the helicopter tractor 1 is not transporting the helicopter, the telescopic rod 134 is retracted into the upper cross beam 131, thereby reducing the width of the upper cross beam assembly 13. When the helicopter tractor 1 is placed under the helicopter, the operator can pull the telescopic rod 134 out of the upper cross beam 131, and the telescopic rod 134 fits together along the inner wall of the copper sleeve 133, thereby reducing the friction between the telescopic rod 134 and the upper cross beam 131. At the same time, the upper cross beam 131 and the telescopic rod 134 are arranged in a telescopic shape, which can be better used in conjunction with the helicopter skid, and is convenient to use.

[0041] like Figure 8As shown, both ends of the upper crossbeam assembly 13 are installed with a grab hook assembly 14, and the grab hook assembly 14 includes a connecting joint 141 installed at the top of the telescopic rod 134, the connecting joint 141 is fixedly connected to the telescopic rod 134, a screw rod 142 is connected to the connecting joint 141, a threaded hole 2 is opened on the connecting joint 141, the screw rod 142 is threadedly connected to the connecting joint 141 through the threaded hole, a grab hook frame 143 is installed below the screw rod 142, a rotating hinge seat is provided between the screw rod 142 and the grab hook frame 143, and the screw rod 142 The hook frame 143 is rotatably connected to the rotating hinge seat, one side of the hook frame 143 is fixedly connected to the rotating hinge seat, the setting of the screw rod 142 can adjust the position of the hook frame 143 up and down by rotating the hinge seat, the setting of the hook frame 143 can grab the helicopter's skid bar, and a stabilizing plate 144 is installed in the hook frame 143. The two sides of the stabilizing plate 144 fit the inner wall of the hook frame 143, and the lower part of the stabilizing plate 144 is arranged in an arc shape. The setting of the stabilizing plate 144 can make the hook frame 143 hold the helicopter when it is sledding. The sled is pushed up, so that the helicopter sled can be more stable when being caught by the grab hook frame 143. Two groups of L-shaped grooves are opened on the grab hook frame 143. Two groups of movable rods 145 are installed above the stabilizing plate 144. The movable rods 145 are rotatably connected to the stabilizing plate 144. The two ends of the movable rods 145 are installed corresponding to the L-shaped grooves. The two ends of the movable rods 145 are respectively slidably connected to the L-shaped grooves. A connecting column 146 is installed on the grab hook frame 143. A slot hole is opened on the grab hook frame 143. The connecting column 146 is installed corresponding to the slot hole. A return spring 147 is installed between one end of 146 and a group of movable rods 145, one end of the return spring 147 is fixedly connected to the connecting column 146, and the other end of the return spring 147 is fixedly connected to the movable rod 145. The setting of the return spring 147 can make the stabilizing plate 144 adapt to the helicopter skid, and at the same time, the stabilizing plate 144 quickly returns to the initial state when not in use. The setting of the grab hook assembly 14 can stably grab the position of the helicopter skid, so that the skid-type helicopter is more stable during transportation;

[0042] When the helicopter tractor 1 is placed under the helicopter, the telescopic rod 134 is pulled out from the upper crossbeam 131, and then the helicopter skid portion is firmly grasped by the grab hook assembly 14. When the telescopic rod 134 is pulled out and corresponds to the position of the helicopter skid, the operator rotates the screw rod 142 to make the screw rod 142 drive the grab hook frame 143 to move downward, so that the grab hook frame 143 grasps one end of the skid. The operator fixes the helicopter skid to the buckle below the grab hook frame 143 by bolts, and at the same time, the stabilizing plate 144 fits with one side of the skid. At this time, the stabilizing plate 144 squeezes the reset spring 147, so that the movable rod 145 slides along the L-shaped groove, so that the lower arc-shaped side of the stabilizing plate 144 is against the helicopter skid, thereby enhancing the stability of the helicopter during transportation;

[0043] like Figure 5 As shown, a front wheel mounting crossbeam assembly 3 is installed on one side of the vehicle body assembly 11, and the front wheel mounting crossbeam assembly 3 includes a front wheel steering seat bracket 31, and the front wheel steering seat bracket 31 is arranged in an arch shape, and one end of the front wheel steering seat bracket 31 is correspondingly installed on one side of the vehicle body frame 111, and one side of the front wheel steering seat bracket 31 is fixedly connected to the vehicle body frame 111, and a reinforcing rib plate 32 is arranged between the front wheel steering seat bracket 31 and the vehicle body frame 111, and the reinforcing rib plate 32 is in a triangular shape, and one side of the reinforcing rib plate 32 is fixedly connected to the front wheel steering seat bracket 31, and the other side of the reinforcing rib plate 32 is fixedly connected to the vehicle body frame 111, and the arrangement of the reinforcing rib plate 32 can make the front wheel steering seat bracket 31 and the vehicle body frame 111 in an installed state. The front wheel steering seat bracket 31 is more stable, a steering seat 33 is installed at the other end of the front wheel steering seat bracket 31, and the mounting end of the steering seat 33 is fixedly connected to the front wheel steering seat bracket 31. A front wheel 34 is arranged below the steering seat 33, and the front wheel 34 is installed corresponding to the steering seat 33. The setting of the front wheel 34 can support the vehicle frame 111, so that one side of the vehicle frame 111 is separated from the ground. The bow-shaped setting of the front wheel steering seat bracket 31 can avoid motion interference when the front wheel 34 is rotated through the steering seat 33. The setting of the front wheel mounting crossbeam assembly 3 can be connected to the traction rod assembly 4, so that the vehicle body assembly 11 is towed through the traction rod assembly 4, so that the helicopter can be towed and transported more conveniently;

[0044] When the helicopter tractor 1 and the helicopter skid are stably installed, the steering seat 33 can make the rotation angle of the front wheel 34 variable, so that the helicopter can be transported in different directions;

[0045] like Figure 10-12As shown, a traction rod assembly 4 is arranged on the side of the front wheel mounting cross beam assembly 3 away from the helicopter tractor 1, and the traction rod assembly 4 includes a secondary rod 41, and a quick release pin is connected between one end of the secondary rod 41 and the steering seat 33, one end of the quick release pin is fixedly connected to the secondary rod 41, and the other end of the quick release pin is installed corresponding to one end of the steering seat 33. The setting of the quick release pin can enable the traction rod assembly 4 to be quickly removed when the vehicle body assembly 11 is not in use, thereby reducing the space occupied by the equipment, and a flip hinge seat 42 is arranged on the other end of the secondary rod 41, one end of the flip hinge seat 42 is fixedly connected to the secondary rod 41, and a main rod 43 is installed on the other side of the flip hinge seat 42, and a main rod 43 is fixed on the main rod 43. Two sets of handles are provided, and the setting of the handles can make it more convenient for the operator to perform traction operations on the device. The other end of the flip hinge seat 42 is fixedly connected to the main rod 43. The setting of the flip hinge seat 42 can make the auxiliary rod 41 and the main rod 43 folded when the traction rod assembly 4 is in the storage state, thereby further reducing the space occupied by the traction rod assembly 4. The end of the main rod 43 away from the flip hinge seat 42 is connected to a buffer mechanism 44, and the buffer mechanism 44 includes a buffer cylinder 441 installed corresponding to one end of the main rod 43, one end of the buffer cylinder 441 is fixedly connected to the main rod 43, and the outer ring of the buffer cylinder 441 is provided with a buffer inner rod 442, and the buffer inner rod 44 The inner ring of one end of 2 fits with the outer ring of the main rod 43, the buffer inner rod 442 is slidably connected with the buffer cylinder 441, a buffer spring 443 is installed between the outer ring of the buffer cylinder 441 and the inner ring of the buffer inner rod 442, one end of the buffer spring 443 is fixedly connected to the inner wall of one end of the buffer inner rod 442, a head nut 444 is installed on the top of the buffer cylinder 441, the head nut 444 is installed corresponding to the inner ring of the buffer inner rod 442, one end of the head nut 444 is fixedly connected to the buffer inner rod 442, the other end of the buffer spring 443 is fixedly connected to the inner wall of the other end of the head nut 444, and the setting of the buffer mechanism 44 can be used for the traction rod assembly 4 The buffer spring 443 in the buffer inner rod 442 can absorb the excess impact energy of the device when starting and stopping, and release it after the impact energy is weakened, so that the energy impact is transformed into a more gentle energy fluctuation. The linear relationship between the spring compression force and the deformation makes the buffer spring 443 deform instantly when receiving external force, thereby reducing the impact load received by other parts. A traction ring 45 is installed at the top of the buffer inner rod 442, and one end of the traction ring 45 is fixedly connected to the buffer inner rod 442. The setting of the traction rod assembly 4 makes it more convenient for the operator to tow the helicopter through the vehicle body assembly 11;

[0046] The operator pulls the traction ring 45, so that the traction ring 45 drives the flip hinge seat 42 to be pulled through the buffer mechanism 44, so that the vehicle body assembly 11 is short-distance transported and transformed through the auxiliary rod 41 and the front wheel mounting cross beam assembly 3. The buffer mechanism 44 can buffer the impact vibration generated during the start and stop of the helicopter transport operation;

[0047] like Figure 1-6 As shown, two groups of fixed-angle rear wheels 6 are arranged on one side of the vehicle body assembly 11 away from the front wheel mounting cross beam assembly 3, and a rotating angle plate is arranged between the fixed-angle rear wheels 6 and the helicopter tractor 1, and the fixed-angle rear wheels 6 are installed correspondingly to the rotating angle plate, and the fixed-angle rear wheels 6 are rotatably connected to the rotating angle plate, and one side of the rotating angle plate is fixedly connected to the vehicle body assembly 11. The setting of the rotating angle plate can make the fixed-angle rear wheels 6 change angles better, so that the helicopter can be better transported, and the setting of the fixed-angle rear wheels 6 can lift one side of the vehicle body assembly 11 off the ground, and at the same time, the fixed-angle rear wheels 6 can cooperate with the front wheels 34 to stably support the vehicle body assembly 11, so as to facilitate the transfer of the helicopter through the vehicle body assembly 11;

[0048] The fixed-angle rear wheel 6 cooperates with the front wheel 34 to stably support the vehicle body assembly 11, and at the same time ensure the overall stability when the tractor wheel 2 and the field rotating disc perform corresponding operations;

[0049] like Figure 3-4 As shown, the mounting end of the tug wheel 2 is mounted corresponding to the skid of the helicopter, and the tug wheel 2 and the helicopter tractor 1 are arranged in a split type. The tug wheel 2 is a mature product in the prior art, so it will not be described in detail in this article. The tug wheel 2 is connected to the fixing nails on the helicopter skid. The setting of the tug wheel 2 can lift the helicopter upward, thereby achieving the purpose of lifting the helicopter, and can be used in conjunction with the rotating disc of the airport to calibrate the helicopter compass.

[0050] The connecting end of the tug wheel 2 is matched with the other end of the helicopter skid for easy installation. The tug wheel 2 is in a single body, which is convenient for direct use with the helicopter skid. At the same time, the helicopter tractor 1 is used to transport the tug wheel 2 synchronously, and it is convenient for storage. The tug wheel 2 can be used to cooperate with the helicopter on the helicopter tractor 1 and the airport rotating disc, so as to complete the compass calibration operation of the helicopter.

[0051] In this embodiment, when the helicopter is in the transfer operation, the helicopter tractor 1 is moved to the corresponding interface position of the front end of the helicopter sled, and the grab hook assembly 14 is used to connect with the sled interface, and the rear end interface of the sled is connected with the tug wheel 2, and at the same time, the helicopter tractor 1 and the tug wheel 2 are lifted up to synchronously lift the helicopter sled off the ground, thereby achieving the task of traction transfer;

[0052] When used for compass calibration, after the helicopter is towed to the work site, a set of tug wheels 2 is moved to the center of the rotating disc, and then the helicopter is lowered to make its skid contact with the ground. After adjusting the installation angle of the fixed-angle rear wheels 6 on the helicopter tractor 1, the helicopter is lifted up again, and the helicopter can be manually towed through the front-end traction rod assembly 4 to achieve the function of rotating the helicopter in situ. Compass calibration;

[0053] After the operation is completed, the tug wheel 2 can be placed in the reserved position of the helicopter tractor 1 for matching storage.

[0054] The above specific embodiment is only a preferred embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A multifunctional skid-type helicopter traction device, comprising a helicopter tractor (1) and two sets of tractor wheels (2), characterized in that: The helicopter tractor (1) comprises a vehicle body component (11), two groups of balancing lifting components (12) are installed above the vehicle body component (11), upper crossbeam components (13) are arranged above the two groups of balancing lifting components (12), grab hook components (14) are installed at both ends of the upper crossbeam components (13), a front wheel mounting crossbeam component (3) is installed on one side of the vehicle body component (11), a traction rod component (4) is arranged on the side of the front wheel mounting crossbeam component (3) away from the helicopter tractor (1), a hydraulic jacking component (5) is installed above the helicopter tractor (1), two groups of fixed-angle rear wheels (6) are arranged on the side of the vehicle body component (11) away from the front wheel mounting crossbeam component (3), and the mounting end of the tug wheel (2) is installed corresponding to the skid of the helicopter.

2. A multifunctional skid-type helicopter traction device according to claim 1, characterized in that: The vehicle body assembly (11) comprises a vehicle body frame (111), wherein the inner ring of the vehicle body frame (111) is respectively provided with two groups of vertical beams and one group of horizontal beams, wherein the two groups of vertical beams are provided with an inclined groove on the side of the helicopter tractor (1) away from each other, and the two groups of vertical beams are provided with a tractor wheel frame (112) on the side away from each other, wherein the tractor wheel frame (112) is arranged in an "L" shape, and the tractor wheel (2) is placed above the helicopter tractor (1) in a stored state and fits with one side of the tractor wheel frame (112).

3. The multifunctional skid-type helicopter traction device according to claim 2, characterized in that: The balancing lifting assembly (12) comprises a support seat (121), a rotating plate (122) is arranged on one side of the support seat (121), a transfer seat (123) is arranged on the end of the rotating plate (122) away from the support seat (121), a balancing connecting rod (7) is connected between the support seat (121) and the transfer seat (123), connecting rods (124) are arranged on both sides of the rotating plate (122), and the connecting rods (124) are arranged in a "V" shape, a guide frame (125) is arranged on the side of the support seat (121) away from the rotating plate (122), and the support seat (121) is provided with a plurality of connecting rods (124) and a plurality of connecting rods (124) arranged in a "V" shape. The support seat (121) and the guide frame (125) are respectively installed corresponding to the two sides of the crossbeam on one side close to each other. The guide frame (125) is arranged in a "U" shape. A sliding rod (8) is connected between the two groups of connecting rods (124). The sliding rod (8) and the inner side of the guide frame (125) are fitted with each other. A limiting plate (126) is arranged on one side of the guide frame (125). A limiting ring (127) is installed on one side of the limiting plate (126). The inner ring of the limiting ring (127) is provided with a screw rod (128). One end of the screw rod (128) is connected to an anti-slip block (129).

4. The multifunctional skid-type helicopter traction device according to claim 3, characterized in that: The upper crossbeam assembly (13) comprises two groups of upper crossbeams (131), the two groups of upper crossbeams (131) are respectively mounted corresponding to one side of the adapter (123), a connecting shaft (132) is arranged between the two groups of upper crossbeams (131), the open ends of the upper crossbeams (131) are each provided with a copper sleeve (133), the inner ring of the copper sleeve (133) is provided with a telescopic rod (134), the outer ring of the telescopic rod (134) is provided with a limiting sleeve (135), and the outer ring of the limiting sleeve (135) and the inner ring of the upper crossbeam (131) are mutually fitted.

5. The multifunctional skid-type helicopter traction device according to claim 4, characterized in that: The grab hook assembly (14) comprises a connecting joint (141) installed at the top end of the telescopic rod (134), the connecting joint (141) is connected to a screw rod (142), a grab hook frame (143) is installed below the screw rod (142), a stabilizing plate (144) is installed inside the grab hook frame (143), the lower part of the stabilizing plate (144) is arranged in an arc shape, two groups of L-shaped grooves are opened on the grab hook frame (143), two groups of movable rods (145) are installed above the stabilizing plate (144), the two ends of the movable rods (145) are installed corresponding to the L-shaped grooves, a connecting column (146) is installed on the grab hook frame (143), and a reset spring (147) is installed between one end of the connecting column (146) and a group of movable rods (145).

6. The multifunctional skid-type helicopter traction device according to claim 5, characterized in that: The front wheel mounting cross beam assembly (3) comprises a front wheel steering seat bracket (31), the front wheel steering seat bracket (31) is arranged in a bow shape, one end of the front wheel steering seat bracket (31) is mounted corresponding to one side of a vehicle body frame (111), a reinforcing rib plate (32) is arranged between the front wheel steering seat bracket (31) and the vehicle body frame (111), a steering seat (33) is mounted on the other end of the front wheel steering seat bracket (31), and a front wheel (34) is arranged below the steering seat (33).

7. The multifunctional skid-type helicopter traction device according to claim 6, characterized in that: The traction rod assembly (4) comprises a secondary rod (41), one end of the secondary rod (41) is connected to a steering seat (33) with a quick release pin, the other end of the secondary rod (41) is provided with a flip hinge seat (42), the other side of the flip hinge seat (42) is provided with a main rod (43), the end of the main rod (43) away from the flip hinge seat (42) is connected to a buffer mechanism (44), the buffer mechanism (44) comprises a buffer installed corresponding to one end of the main rod (43). A buffer cylinder (441) is provided with a buffer inner rod (442) on its outer ring, a buffer spring (443) is installed between the outer ring of the buffer cylinder (441) and the inner ring of the buffer inner rod (442), a head nut (444) is installed at the top end of the buffer cylinder (441), the head nut (444) is installed corresponding to the inner ring of the buffer inner rod (442), and a traction ring (45) is installed at the top end of the buffer inner rod (442).

8. The multifunctional skid-type helicopter traction device according to claim 7, characterized in that: The hydraulic lifting assembly (5) comprises an oil cylinder (51) installed above the helicopter tractor (1), the output end of the oil cylinder (51) being installed corresponding to the connecting shaft (132), a hand pump (52) and an oil tank (53) being installed on one side of the vehicle body assembly (11), connecting oil pipes (54) for connecting and communicating are installed between the hand pump (52) and the oil tank (53) and between the hand pump (52) and the oil cylinder (51), and a hand crank (55) is installed on one side of the hand pump (52).

Images