Portable airplane draw bar

Abstract

The utility model relates to a portable airplane traction rod, and belongs to the technical field of airplane traction. The device mainly comprises a supporting frame, supporting wheels, a push-pull rod, a telescopic device, a lifting device and a rechargeable battery. The telescopic device comprises a sleeve, a threaded casing pipe, a lead screw and a motor. The lifting device comprises a mounting seat, a rotating block, a threaded rod and a lifting motor; the lifting motor drives the rotating block to rotate, the threaded rod stretches out and draws back, the front end of the push-pull rod ascends and descends, the front end of the push-pull rod can be in butt joint with a tractor conveniently, manual lifting is not needed, and operation is easy and convenient. The threaded sleeve is driven by the motor to rotate, the lead screw stretches out and draws back, then the included angle between the supporting frame and the push-pull rod is changed, the height of the tail end of the push-pull rod is adjusted, the butt joint height of an aircraft landing gear is met, labor intensity is lowered, and working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft towing, and particularly relates to a portable aircraft towing bar. Background Art

[0002] For light and small general aviation aircraft, it is often necessary to move the aircraft between the hangar, apron and runway according to daily flight tasks. The aircraft towing bar is a device connected between the towing vehicle and the front landing gear of the aircraft when pushing or towing the aircraft. The currently used aircraft towing bar needs to be manually lifted at the front end of the towing bar to connect with the towing vehicle, and the height of the end of the aircraft towing bar is adjusted by manually adjusting the screw rod when connecting with the front landing gear of the aircraft. The screw rod adjustment generally requires 20 to 30 turns, which takes a lot of time. Usually, two operators are required to cooperate to complete it, which is time-consuming and laborious, with a large labor intensity and low work efficiency. Summary of the Invention

[0003] In order to overcome the problems in the background art that the front end of the towing bar needs to be manually lifted to connect with the towing vehicle, and the height of the end of the aircraft towing bar is adjusted by manually adjusting the screw rod when connecting with the front landing gear of the aircraft. The screw rod adjustment generally requires 20 to 30 turns, and usually two operators are required to cooperate to complete it, which is time-consuming and laborious, and has a large labor intensity. The utility model provides a portable aircraft towing bar; by driving the rotating block 52 to rotate through the lifting motor 54, the telescopic movement of the threaded rod 53 is realized, and the lifting of the front end of the push-pull rod 3 is realized, which is convenient for the front end of the push-pull rod 3 to be docked with the towing vehicle without manual lifting, and the operation is simple and convenient; by driving the threaded sleeve 42 to rotate through the motor 44, the telescopic movement of the screw rod 43 is realized, and then the included angle between the support frame 1 and the push-pull rod 3 is changed, and the height adjustment of the end of the push-pull rod 3 is realized to meet the docking height of the aircraft landing gear, which is beneficial to reducing the labor intensity and effectively improving the work efficiency.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: A portable aircraft towing bar mainly includes a support frame 1, support wheels 2, a push-pull rod 3, a telescopic device 4, a lifting device 5, and a rechargeable battery 6. The support wheels 2 are installed on both sides of the rear end of the support frame 1. The middle of the push-pull rod 3 is hinged to the front end of the support frame 1. Both ends of the telescopic device 4 are respectively hinged to the top of the support frame 1 and the push-pull rod 3. A towing ring 31 for connecting to a towing vehicle is provided at the front end of the push-pull rod 3, and a connecting head 7 for connecting to the aircraft landing gear is provided at the end of the push-pull rod 3. The lifting device 5 is vertically installed at the front end of the push-pull rod 3, and a universal wheel 8 is installed at the bottom of the lifting device 5. The telescopic device 4 includes a sleeve 41, a threaded sleeve 42, a lead screw 43, and a motor 44. The sleeve 41 is hinged to the push-pull rod 3 through a support ear 45. The threaded sleeve 42 is rotatably installed in the sleeve 41. The lead screw 43 is threadedly connected to the threaded sleeve 42. The end of the lead screw 43 is hinged to the support frame 1. The motor 44 is installed at the end of the sleeve 41, and the motor 44 is in transmission connection with the threaded sleeve 42. The lifting device 5 includes a mounting seat 51, a rotating block 52, a threaded rod 53, and a lifting motor 54. The mounting seat 51 is installed on the push-pull rod 3. The rotating block 52 is rotatably installed in the mounting seat 51. The threaded rod 53 passes through the mounting seat 51, the rotating block 52, and the push-pull rod 3. The threaded rod 53 is threadedly connected to the rotating block 52. The lifting motor 54 is installed on the mounting seat 51. The lifting motor 54 is in transmission connection with the rotating block 52 through a gear. The universal wheel 8 is installed at the bottom end of the threaded rod 53. The rechargeable battery 6 is installed on the push-pull rod 3, and the rechargeable battery 6 is electrically connected to the motor 44 and the lifting motor 54 respectively.

[0005] Further, a sleeve 55 is sleeved on the threaded rod 53 with a gap. The bottom end of the sleeve 55 is fixed to the mounting seat 51. The top end of the threaded rod 53 is radially limited and connected to the sleeve 55 through a spline. A ring-shaped handle 56 is installed at the top end of the sleeve 55.

[0006] Further, a connecting groove 71 is provided on the connecting head 7. A sliding groove 72 is provided at the bottom of the connecting head 7. A plug board 73 is slidably installed in the sliding groove 72. An installation groove is provided in the middle of the connecting head 7. A force arm 74 is hinged in the installation groove. The middle of the force arm 74 is hinged to the connecting head 7. The bottom end of the force arm 74 is connected to the effective shaft at the rear end of the plug board 73 through a waist-shaped hole. A pin hole for pin-connecting with the force arm 74 is provided on the connecting head 7. The force arm 74 and the connecting head 7 are limited and connected through an elastic pin 9.

[0007] Further, the elastic pin 9 includes a pin shaft 91, a sliding sleeve 92, a compression spring 93, and a bushing 94. The sliding sleeve 92 is slidably sleeved on the pin shaft 91. The compression spring 93 is sleeved on the rear half section of the pin shaft 91. The bushing 94 is sleeved on the rear half section of the pin shaft 91. The rear end of the pin shaft 91 is fixedly connected to the bushing 94. A limit block 95 is provided at the front end of the pin shaft 91. A through groove 96 for the limit block 95 to pass through is provided on the pin holes of the force arm 74 and the connecting head 7. An embedding groove 97 for limiting the limit block 95 is provided at the end of the pin hole of the connecting head 7.

[0008] Further, controllers and buttons 10 are both connected and installed on the motor 44 and the lifting motor 54. The buttons 10 are connected to the controllers.

[0009] Further, a lifting arm 21 is installed on the push-pull rod 3. A cross beam 22 is installed on the lifting arm 21. Friction pressure plates 23 pressing on the support wheels 2 are respectively installed at both ends of the cross beam 22.

[0010] Further, the lifting arm 21 includes a square sleeve 24, a telescopic arm 25, and an adjusting screw rod 26. The square sleeve 24 is installed on the push-pull rod 3. The telescopic arm 25 is telescopically installed in the square sleeve 24. The bottom end of the adjusting screw rod 26 is installed at the bottom of the square sleeve 24 through a bearing. The telescopic arm 25 is threadedly connected to the adjusting screw rod 26.

[0011] Further, a hand wheel 27 convenient for adjustment is provided at the top end of the adjusting screw rod 26.

[0012] The beneficial effects of the present utility model:

[0013] By driving the rotating block to rotate through the lifting motor, the present utility model realizes the telescoping of the threaded rod, realizes the lifting of the front end of the push-pull rod, is convenient for the docking of the front end of the push-pull rod with the tractor, and does not require manual lifting, with simple and convenient operation; by driving the threaded sleeve to rotate through the motor, the present utility model realizes the telescoping of the screw rod, and further changes the included angle between the support frame and the push-pull rod, realizes the height adjustment of the end of the push-pull rod, so as to meet the docking height of the aircraft landing gear, which is beneficial to reducing the labor intensity and effectively improving the work efficiency. Description of the Drawings

[0014] Figure 1 is the main shaft-measured three-dimensional schematic diagram of the present utility model.

[0015] Figure 2 is the rear shaft-measured three-dimensional schematic diagram of the present utility model.

[0016] Figure 3 is the partial structure three-dimensional schematic diagram of the present utility model.

[0017] Figure 4 is the connecting head bottom shaft-measured three-dimensional schematic diagram of the present utility model.

[0018] Figure 5 It is a three-dimensional schematic diagram of the main shaft measurement of the connector of the present utility model.

[0019] Figure 6 It is a sectional view schematic diagram of the connector of the present utility model.

[0020] Figure 7 It is a schematic diagram of the installation structure of the lifting device of the present utility model.

[0021] Figure 8 It is a schematic diagram of the elastic pin structure of the present utility model. Specific embodiments

[0022] In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below in conjunction with the drawings for the convenience of those skilled in the art to understand.

[0023] The utility model discloses a portable aircraft towing bar. The portable aircraft towing bar mainly comprises a support frame 1, support wheels 2, a push-pull rod 3, a telescopic device 4, a lifting device 5, and a rechargeable battery 6. The support wheels 2 are installed on both sides of the rear end of the support frame 1. The middle of the push-pull rod 3 is hinged to the front end of the support frame 1. Both ends of the telescopic device 4 are respectively hinged to the top of the support frame 1 and the push-pull rod 3. A towing ring 31 for connecting to a tractor is provided at the front end of the push-pull rod 3, and a connecting head 7 for connecting to an aircraft landing gear is provided at the end of the push-pull rod 3. The lifting device 5 is vertically installed at the front end of the push-pull rod 3, and a universal wheel 8 is installed at the bottom of the lifting device 5. The telescopic device 4 comprises a sleeve 41, a threaded sleeve 42, a lead screw 43, and a motor 44. The sleeve 41 is hinged to the push-pull rod 3 through a support ear 45. The threaded sleeve 42 is rotatably installed in the sleeve 41. The lead screw 43 is threadedly connected to the threaded sleeve 42. The end of the lead screw 43 is hinged to the support frame 1. The motor 44 is installed at the end of the sleeve 41, and the motor 44 is in transmission connection with the threaded sleeve 42. The lifting device 5 comprises a mounting seat 51, a rotating block 52, a threaded rod 53, and a lifting motor 54. The mounting seat 51 is installed on the push-pull rod 3. The rotating block 52 is rotatably installed in the mounting seat 51. The threaded rod 53 passes through the mounting seat 51, the rotating block 52, and the push-pull rod 3. The threaded rod 53 is threadedly connected to the rotating block 52. The lifting motor 54 is installed on the mounting seat 51. The lifting motor 54 is in transmission connection with the rotating block 52 through a gear. The universal wheel 8 is installed at the bottom end of the threaded rod 53. The rechargeable battery 6 is installed on the push-pull rod 3, and the rechargeable battery 6 is electrically connected to the motor 44 and the lifting motor 54 respectively. By driving the rotating block 52 to rotate through the lifting motor 54, the telescopic movement of the threaded rod 53 is realized, and the lifting of the front end of the push-pull rod 3 is realized, which is convenient for the docking of the front end of the push-pull rod 3 with the tractor without manual lifting, and the operation is simple and convenient. By driving the threaded sleeve 42 to rotate through the motor 44, the telescopic movement of the lead screw 43 is realized, and then the included angle between the support frame 1 and the push-pull rod 3 is changed, and the height adjustment of the end of the push-pull rod 3 is realized to meet the docking height of the aircraft landing gear, which is beneficial to reducing the labor intensity and effectively improving the work efficiency.

[0024] A sleeve 55 is sleeved on the threaded rod 53 with a gap. The bottom end of the sleeve 55 is fixed on the mounting seat 51. The top end of the threaded rod 53 is radially limited and connected to the sleeve 55 through a spline. A ring-shaped handle 56 is installed at the top end of the sleeve 55. By radially limiting and connecting the top end of the threaded rod 53 to the sleeve 55 through a spline, the rotation of the threaded rod 53 is avoided, and the reliability of the telescopic adjustment is ensured. After the front end of the push-pull rod 3 is lifted, the front end of the push-pull rod 3 can be easily swung by operating the handle 56 under the support of the universal wheel 8, so as to facilitate the docking with the tractor.

[0025] The connector 7 is provided with a connection groove 71. The bottom of the connector 7 is provided with a sliding groove 72, and a plug plate 73 is slidably installed in the sliding groove 72. The middle part of the connector 7 is provided with an installation groove, and a lever arm 74 is hinged in the installation groove. The middle part of the lever arm 74 is hinged to the connector 7. The bottom end of the lever arm 74 is connected to the effective shaft at the rear end of the plug plate 73 through a waist-shaped hole. The connector 7 is provided with a pin hole for pin connection with the lever arm 74. The lever arm 74 and the connector 7 are limited and connected through an elastic pin 9. After the aircraft landing gear is buckled into the connection groove 71, the lever arm 74 is operated to make the plug plate 73 slide out. The plug plate 73 and the connection groove 71 form a closed limiting ring, and the lever arm 74 and the connector 7 are inserted into the elastic pin 9 for limitation.

[0026] The elastic pin 9 includes a pin shaft 91, a sliding sleeve 92, a compression spring 93, and a bushing 94. The sliding sleeve 92 is slidably sleeved on the pin shaft 91. The compression spring 93 is sleeved on the rear half section of the pin shaft 91. The bushing 94 is sleeved on the rear half section of the pin shaft 91. The rear end of the pin shaft 91 is fixedly connected to the bushing 94. A limiting block 95 is provided at the front end of the pin shaft 91. A through groove 96 for the limiting block 95 to pass through is provided on the pin holes of the lever arm 74 and the connector 7. An embedding groove 97 for limiting the limiting block 95 is provided at the end of the pin hole of the connector 7. The lever arm 74 is operated to align the pin holes of the lever arm 74 and the connector 7. The limiting block 95 passes through the through groove 96 and is inserted into the pin shaft 91. After the sliding sleeve 92 contacts the end of the pin hole, the compression spring is compressed. The pin shaft 91 continues to extend. After the limiting block 95 disengages from the through groove 96, the elastic pin 9 is rotated to make the limiting block 95 turn into the embedding groove 97. When the hand is released, under the action of the compression spring 93, the limiting block 95 is embedded in the embedding groove 97 to avoid slipping off, which can ensure reliable connection. When disassembly is required, one end of the bushing 94 is compressed to compress the compression spring 93, so that the limiting block 95 disengages from the embedding groove 97. The elastic pin 9 is rotated to make the limiting block 95 face the through groove 96, and then the elastic pin 9 can be removed. The operation is convenient, fast, time-saving and labor-saving.

[0027] Controllers and buttons 10 are connected and installed on both the motor 44 and the lifting motor 54. The buttons 10 are connected to the controllers, which is convenient for operation.

[0028] A lifting arm 21 is installed on the push-pull rod 3. A cross beam 22 is installed on the lifting arm 21. Friction pressing plates 23 pressing on the supporting wheels 2 are respectively installed at both ends of the cross beam 22. The angle between the support frame 1 and the push-pull rod 3 can be adjusted and changed by the motor 44, so that the friction pressing plates 23 can press on the supporting wheels 2 to realize braking or the friction pressing plates 23 can be separated from the supporting wheels 2 to facilitate movement. In the non-working state, the friction pressing plates 23 keep pressing on the supporting wheels 2 to realize braking, avoiding the movement of the present invention in strong winds.

[0029] The lifting arm 21 includes a square sleeve 24, a telescopic arm 25, and an adjusting screw rod 26. The square sleeve 24 is installed on the push-pull rod 3, the telescopic arm 25 is telescopically installed in the square sleeve 24, and the bottom end of the adjusting screw rod 26 is installed at the bottom of the square sleeve 24 through a bearing. The telescopic arm 25 is threadedly connected to the adjusting screw rod 26.

[0030] The top of the adjusting screw rod 26 is provided with a hand wheel 27 for easy adjustment. By adjusting the hand wheel 27, the support height of the lifting arm 21 can be changed, thereby changing the adjustment amount of the telescopic device 4 in the braking state.

[0031] Working process:

[0032] The lifting motor 54 drives the rotating block 52 to rotate, so that the threaded rod 53 can be extended and retracted, and the front end of the push-pull rod 3 can be lifted and lowered, so that the front end of the push-pull rod 3 can be easily connected to the tractor. After the front end of the push-pull rod 3 is raised, the front end of the push-pull rod 3 can be easily swung by the operating handle 56 under the support of the universal wheel 8, so as to facilitate the connection with the tractor without manual lifting, and the operation is simple and convenient; the motor 44 drives the threaded sleeve 42 to rotate, so that the screw rod 43 can be extended and retracted, and then the angle between the support frame 1 and the push-pull rod 3 can be changed, so that the height adjustment of the end of the push-pull rod 3 can be achieved to meet the connection height of the aircraft landing gear. After the aircraft landing gear is buckled into the connecting groove 71, the lever arm 74 is operated to slide the plug plate 73 out, and the plug plate 73 and the connecting groove 71 form a closed limit ring, and the lever arm 74 and the connector 7 plug The elastic pin 9 is inserted into the elastic pin 9 for limiting; the force arm 74 is operated to align the force arm 74 with the pin hole of the connecting head 7, the limit block 95 is inserted into the pin shaft 91 from the through slot 96 and the spring is compressed after the sliding sleeve 92 contacts the end of the pin hole, and the pin shaft 91 continues to extend. After the limit block 95 is disengaged from the through slot 96, the elastic pin 9 is rotated to make the limit block 95 rotate into the embedded slot 97, and the hand is released. Under the force of the compression spring 93, the limit block 95 is embedded in the embedded slot 97 to avoid slipping, which can ensure reliable connection; when disassembly is required, one end of the shaft sleeve 94 is compressed, the compression spring 93 is compressed, the limit block 95 is disengaged from the embedded slot 97, and the elastic pin 9 is rotated so that the limit block 95 is opposite to the through slot 96 to remove the elastic pin 9. The operation is convenient, quick, time-saving and labor-saving; it is conducive to reducing labor intensity and effectively improving work efficiency.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A portable aircraft towing rod, characterized in that: The portable aircraft traction rod comprises a support frame (1), a support wheel (2), a push-pull rod (3), a telescopic device (4), a lifting device (5), and a rechargeable battery (6). The support wheel (2) is mounted on both sides of the rear end of the support frame (1). The middle part of the push-pull rod (3) is hinged to the front end of the support frame (1). The two ends of the telescopic device (4) are respectively hinged to the top of the support frame (1) and the push-pull rod (3). The front end of the push-pull rod (3) is provided with a traction ring (31) connected to a tractor. The end of the push-pull rod (3) is provided with a connector (7) connected to an aircraft landing gear. The lifting device (5) is upright mounted on the front end of the push-pull rod (3). A universal wheel (8) is mounted at the bottom of the lifting device (5). The telescopic device (4) comprises a sleeve (41), a threaded sleeve (42), a screw rod (43), and a motor (44). The sleeve (41) is hinged to the push-pull rod (3) through a support ear (45). The threaded sleeve (42) is rotatably mounted in the sleeve (41). The screw rod (43) The threaded sleeve (42) is threadedly connected to the threaded sleeve (42), the end of the screw rod (43) is hinged on the support frame (1), the motor (44) is installed at the end of the sleeve (41), and the motor (44) is drivingly connected to the threaded sleeve (42); the lifting device (5) comprises a mounting seat (51), a rotating block (52), a threaded rod (53), and a lifting motor (54); the mounting seat (51) is installed on the push-pull rod (3), the rotating block (52) can be rotatably installed in the mounting seat (51), and the threaded sleeve (42) is connected to the lifting motor (54); The rod (53) passes through the mounting seat (51), the rotating block (52) and the push-pull rod (3); the threaded rod (53) is threadedly connected to the rotating block (52); the lifting motor (54) is mounted on the mounting seat (51); the lifting motor (54) is transmission-connected to the rotating block (52) via a gear; the universal wheel (8) is mounted on the bottom end of the threaded rod (53); the rechargeable battery (6) is mounted on the push-pull rod (3); and the rechargeable battery (6) is electrically connected to the motor (44) and the lifting motor (54) respectively.

2. A portable aircraft towing rod as claimed in claim 1, characterized in that: A sleeve (55) is provided in the gap on the threaded rod (53), and the bottom end of the sleeve (55) is fixed on the mounting seat (51); the top end of the threaded rod (53) is radially limitedly connected to the sleeve (55) via a spline, and an annular handle (56) is installed on the top end of the sleeve (55).

3. A portable aircraft towing rod as claimed in claim 1 or 2, characterized in that: The connector (7) is provided with a connecting groove (71), a sliding groove (72) is provided at the bottom of the connector (7), a plug plate (73) is slidably installed in the sliding groove (72), a mounting groove is provided in the middle of the connector (7), a force arm (74) is hinged in the mounting groove, the middle of the force arm (74) is hinged to the connector (7), the bottom end of the force arm (74) is connected to the effective shaft at the rear end of the plug plate (73) through a waist-shaped hole, a pin hole is provided on the connector (7) for pin-connecting with the force arm (74), and the force arm (74) and the connector (7) are limitedly connected by an elastic pin (9).

4. A portable aircraft towing rod as claimed in claim 3, characterized in that: The elastic pin (9) comprises a pin shaft (91), a sliding sleeve (92), a compression spring (93), and a shaft sleeve (94); the sliding sleeve (92) is slidably mounted on the pin shaft (91); the compression spring (93) is mounted on the rear half of the pin shaft (91); the shaft sleeve (94) is mounted on the rear half of the pin shaft (91); the rear end of the pin shaft (91) is fixedly connected to the shaft sleeve (94); a limit block (95) is provided at the front end of the pin shaft (91); a through groove (96) for the limit block (95) to pass through is provided on the force arm (74) and the pin hole of the connector (7); and an embedding groove (97) for limiting the limit block (95) is provided at the end of the pin hole of the connector (7).

5. A portable aircraft towing rod according to any one of claims 1, 2 and 4, characterized in that: The motor (44) and the lifting motor (54) are both connected to and installed with a controller and a button (10), and the button (10) is connected to the controller.

6. A portable aircraft towing rod as claimed in claim 5, characterized in that: A lifting arm (21) is mounted on the push-pull rod (3), a crossbeam (22) is mounted on the lifting arm (21), and friction pressure plates (23) pressed on the support wheel (2) are mounted at both ends of the crossbeam (22).

7. A portable aircraft towing rod as claimed in claim 6, characterized in that: The lifting arm (21) comprises a square sleeve (24), a telescopic arm (25), and an adjusting screw rod (26). The square sleeve (24) is mounted on the push-pull rod (3). The telescopic arm (25) is telescopically mounted in the square sleeve (24). The bottom end of the adjusting screw rod (26) is mounted on the bottom of the square sleeve (24) through a bearing. The telescopic arm (25) is threadedly connected to the adjusting screw rod (26).

8. A portable aircraft towing rod as claimed in claim 7, characterized in that: The top end of the adjusting screw rod (26) is provided with a hand wheel (27) for easy adjustment.

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