Helicopter towing attachments

Abstract

The present invention discloses a helicopter towing accessory, which is connected to a first connecting piece on a towing vehicle at one end, connected to a second connecting piece on a helicopter at the other end, and connected to an adapter between the first connecting piece and the second connecting piece, so as to connect the other end of the first connecting piece to the first connecting position of the adapter, and connect the other end of the second connecting piece to the second connecting position of the adapter, so as to establish a connection between the towing vehicle and the helicopter, so that the towing vehicle can tow the helicopter. The towing accessory can make the connection and towing between the towing vehicle and the helicopter safer and more reliable. It can realize the towing of different types of skid-type or wheeled helicopters for ground movement, improve compatibility, make the cost of helicopter ground towing guarantee lower, and also take into account the simplicity and safety of operation.

Description

Technical Field

[0001] The invention relates to the technical field of aviation equipment, and in particular to a traction accessory used for helicopter traction. Background Art

[0002] During the maintenance and care of helicopters, it is necessary to tow the helicopter to ensure the safe and directional movement of the helicopter on the ground. At present, due to the different take-off tonnage of helicopters, different types of helicopters can be defined. For example, in international standards, the tonnage of light and ultralight helicopters is generally 3 tons or less. Among them, the take-off tonnage of ultralight skid landing gear helicopters is less than 1 ton; and the take-off tonnage of light helicopters is between 1 ton and 3 tons; the take-off tonnage of small and medium-sized helicopters is between 3 tons and 6 tons. Therefore, different types of helicopters need to be equipped with different styles of helicopter tractors, and each tractor is different in appearance, size, principle, etc. For example, a general skid helicopter has a dedicated traction interface, which is usually towed by manpower, or a small manual tractor is used for traction, and a dedicated tractor is matched; in addition, other types of skid helicopters are towed by manpower or a completely different electric tractor, and a traction rod that occupies a relatively large space is matched to dock with the helicopter.

[0003] In summary, in the prior art, different types of helicopters need to be matched with different traction devices, which are not universal among various helicopters, have low safety and reliability, and high operation and maintenance costs. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In order to solve the problems that the existing helicopter traction devices are not universal among various helicopters, have low safety and reliability, and have high operation and maintenance costs, the present invention discloses a compatible helicopter traction accessory for traction connection between a helicopter and a tractor.

[0006] (II) Technical solution

[0007] One aspect of the present invention discloses a helicopter towing accessory, which enables a towing vehicle to tow a helicopter, and includes: a first connecting member, one end of which is connected to the towing vehicle; a second connecting member, which is arranged corresponding to the first connecting member and one end of which is connected to the helicopter; an adapter, which is connected between the first connecting member and the second connecting member, the other end of the first connecting member is connected to the first connecting position of the adapter, and the other end of the second connecting member is connected to the second connecting position of the adapter.

[0008] Optionally, the traction accessory also includes: a shell, the shell includes a mounting hole, an adapter is passed through the shell and arranged in the mounting hole, a first connecting member with one end connected and fixed to the first connecting position of the adapter is arranged on the first opening of the mounting hole corresponding to the front side of the shell, and a second connecting member with one end connected and fixed to the second connecting position of the adapter is arranged on the second opening of the mounting hole corresponding to the back side of the shell.

[0009] Optionally, the traction accessory also includes: a first locking member, one end of which is fixedly connected to the first adapter and / or the second adapter, and is passed through the interior of the shell through a third opening arranged on the side of the shell; the other end of the first locking member is located outside the third opening on the side of the shell.

[0010] Optionally, the adapter includes: a sleeve, a first connecting position is set in the middle of the sleeve, and the sleeve includes a left sleeve and a right sleeve that are integrally formed with the first connecting position as the boundary; a movable rod, the movable rod includes a left movable rod and a right movable rod, the left movable rod is sleeved in the left sleeve, the inner wall of the left sleeve serves as a slideway for the left movable rod, and a left limit mark is set on the side wall of the left movable rod; the right movable rod is sleeved in the right sleeve, the inner wall of the right sleeve serves as a slideway for the right movable rod, and a right limit mark is set on the side wall of the right movable rod.

[0011] Optionally, the second connecting position includes a left fixing position and a right fixing position; the left fixing position is provided with a left fixing part connected to the top end of the left movable rod and located outside the left sleeve; the right fixing position is provided with a right fixing part connected to the top end of the right movable rod and located outside the right sleeve; and the second connecting member includes a left connecting member and a right connecting member, the left connecting member is provided on the left fixing part; the right connecting member is provided on the right fixing part.

[0012] Optionally, the left connecting member includes: a left locking member, which is arranged on the front side in the middle of the left fixing part; a left U-ring, wherein the two ends of the left U-ring are respectively arranged on the two side walls of the left fixing part, and the middle part of the left U-ring is located on the front side of the left fixing part and is spaced a certain distance from the left locking member; a left fixing member, which is arranged at the top end of the left fixing part; a left strap, wherein one end of the left strap is arranged and connected to the left locking member, and the main body of the left strap is passed through the left U-ring and fixedly connected to the left fixing member; and the right connecting member includes: a right locking member, wherein the right locking member is arranged on the front side in the middle of the right fixing part; a right U-ring, wherein the two ends of the right U-ring are respectively arranged on the two side walls of the right fixing part, and the middle part of the right U-ring is located on the front side of the right fixing part and is spaced a certain distance from the right locking member; a right fixing member, which is arranged at the top end of the right fixing part; a right strap, wherein one end of the right strap is arranged and connected to the right locking member, and the main body of the right strap is passed through the right U-ring and fixedly connected to the right fixing member.

[0013] Optionally, the adapter also includes: a connecting hole, which is arranged on the first connecting position and penetrates the sleeve; a bolt, which includes a wide end, a screw portion, and a thin end that are integrally formed from top to bottom: the diameter of the wide end is larger than the diameter of the connecting hole, and is clamped in the upper opening of the connecting hole of the sleeve; the screw portion is sleeved in the connecting hole, and a thread is arranged on the outer wall of the screw portion, and the thread matches the convex pattern in the connecting hole; the diameter of the thin end is less than or equal to the diameter of the screw portion, and is penetrated out of the lower opening of the connecting hole of the sleeve, and is sleeved and connected with one end of the first connecting member.

[0014] Optionally, the adapter also includes: a second locking member, the second locking member includes a left locking member and a right locking member, the left locking member is clamped in the left through hole on the outer wall of the sleeve at the junction of the sleeve and the left movable rod; the right locking member is clamped in the right through hole on the outer wall of the sleeve at the junction of the sleeve and the right movable rod.

[0015] Optionally, the adapter includes: a first connecting rod, the first connecting rod is provided with a first connecting position; a second connecting rod, the second connecting rod is located at the lower side of the first connecting rod and is arranged parallel to the first connecting rod,

[0016] A base, a first rod position corresponding to one end of the first connecting rod is arranged on the front of the base; a second rod position corresponding to one end of the second connecting rod is also arranged on the front of the base; a hydraulic cylinder, the hydraulic cylinder is arranged on the front of the base.

[0017] Optionally, the first connecting rod includes: a rod sleeve, the inner end of the rod sleeve is arranged on the first rod position and connected to the base, and the outer end of the rod sleeve is located between the first rod position and the first connection position; a rod body, the inner end portion of the rod body is sleeved in the rod sleeve; a rod body limiting part, the inner end of the rod body limiting part is fixedly connected to the outer end of the rod body, the width dimension of the rod body limiting part is larger than the width dimension of the rod body, and the inner end of the rod body limiting part is limited to the first connection position; a straight fork, the straight fork includes a fixing part and a fork end, the inner end of the fixing part is connected to the fixed fork end, and the outer end of the fixing part is fixedly connected to the top end of the rod body; the fork end is U-shaped, including a left L-shaped part and a right L-shaped part, and the short ends of the left L-shaped part and the right L-shaped part are arranged on the inner end of the fixing part.

[0018] Optionally, the adapter also includes: a wheel shovel, the wheel shovel includes a detachable part and a shovel part, the inner end of the detachable part is connected to the fixed shovel part, and the outer end of the detachable part is connected to the top end of the second connecting rod; the shovel part is located below the straight fork.

[0019] Optionally, the adapter also includes: a fixed sleeve, which is arranged on the first connection position and sleeved on the outer wall of the first connecting rod, and the second connecting rod is inserted into the fixed sleeve and in the space below the first connecting rod; one end of the first adapter corresponding to the first connection position is arranged on the outer wall of the fixed sleeve and below the second connecting rod; a sliding sleeve, which is arranged at the first connection position and fixedly connected to the upper part of the fixed sleeve, and part of the rod body is sleeved inside the sliding sleeve; a fastener, which passes through the outer wall of the fixed sleeve and is fixedly connected to the sliding sleeve.

[0020] (III) Beneficial effects

[0021] The present invention discloses a helicopter towing accessory, which is connected to a first connecting piece on a towing vehicle at one end, connected to a second connecting piece on a helicopter at the other end, and connected to an adapter between the first connecting piece and the second connecting piece, so as to connect the other end of the first connecting piece to the first connecting position of the adapter, and connect the other end of the second connecting piece to the second connecting position of the adapter, so as to establish a connection between the towing vehicle and the helicopter, so that the towing vehicle can tow the helicopter. The towing accessory can make the connection and towing between the towing vehicle and the helicopter safer and more reliable. It can realize the towing of different types of helicopters (such as wheeled, skid or landing gear) for ground movement, improve compatibility, make the cost of ground towing guarantee of helicopters lower, and also take into account the simplicity and safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A helicopter towing attachment in embodiment 1 of the present invention;

[0023] Figure 2 It is a helicopter towing accessory in embodiment 2 of the present invention;

[0024] Figure 3A It is a left connecting piece of a helicopter towing attachment in embodiment 2 of the present invention;

[0025] Figure 3B It is a right connecting piece of a helicopter towing attachment in embodiment 2 of the present invention;

[0026] Figure 4 It is a helicopter towing accessory in embodiment 3 of the present invention. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] One aspect of the present invention discloses a helicopter towing accessory, which enables a towing vehicle to tow a helicopter, and includes: a first connecting member, one end of which is connected to the towing vehicle; a second connecting member, which is arranged corresponding to the first connecting member and one end of which is connected to the helicopter; an adapter, which is connected between the first connecting member and the second connecting member, the other end of the first connecting member is connected to the first connecting position of the adapter, and the other end of the second connecting member is connected to the second connecting position of the adapter.

[0029] Specifically, the helicopter towing accessory of the present invention can be used as a connecting accessory between a helicopter and a helicopter towing vehicle. At the same time, when the towing vehicle moves, the helicopter connected to the towing accessory can follow the movement, so that the towing vehicle can tow the helicopter. Both the first connecting member and the second connecting member have at least two connecting ends, each of which has a connecting port. The specific port can be designed as a snap-fit ​​port or a locking port, which matches the connecting port of the corresponding connecting end on the towing vehicle or the helicopter, so as to complete the connection between the first connecting member and the towing vehicle, or the connection between the second connecting member and the helicopter. In certain cases, the snap-fit ​​port or the locking port needs to have a rotating shaft or a rotating ball design, so that the connecting port on the first connecting member and the connecting port on the towing vehicle can rotate relative to each other, and the connecting port on the second connecting member and the connecting port on the helicopter can rotate relative to each other, so as to facilitate the steering movement during the towing process.

[0030] In order to more clearly describe the technical solution of the present invention, three embodiments are given as follows:

[0031] Embodiment 1:

[0032] According to the embodiments of the present disclosure, Figure 1 As shown, the towing attachment 100 includes: a first connecting member 110, one end of which is connected to the towing vehicle; a second connecting member, which is arranged corresponding to the first connecting member, and one end of the second connecting member is connected to the helicopter; an adapter 130, which is connected between the first connecting member 110 and the second connecting member, the other end of the first connecting member 110 is connected to the first connecting position of the adapter 130, and the other end of the second connecting member is connected to the second connecting position of the adapter 130.

[0033] According to the embodiments of the present disclosure, Figure 1As shown, the traction accessory 100 further includes: a housing 120, the housing 120 is used to provide a storage space and a support space for the first connector 110, the second connector and the adapter 130, the housing 120 includes a mounting hole, and the adapter 130 is arranged inside the housing 120 and arranged in the mounting hole. A first connector 110 having one end connected and fixed to the first connection position of the adapter 130 is arranged on the front side of the housing 120 corresponding to the first opening of the mounting hole, and a second connector having one end connected and fixed to the second connection position of the adapter 130 is arranged on the back side of the housing 120 corresponding to the second opening of the mounting hole. In the embodiment of the present invention, the second connector is arranged on the back side of the housing 120 corresponding to the first connector 110. That is, a mounting hole is arranged in the housing 120, the first opening of the mounting hole is located on the front side of the housing 120, and the second opening is located on the back side of the housing 120, and the first connector 110, the adapter 130 and the second connector are arranged in sequence in the mounting hole from the first opening on the front side of the housing 120 to the second opening on the back side.

[0034] According to the embodiments of the present disclosure, Figure 1 As shown, the traction accessory 100 also includes: a first locking member 140, one end of which is fixedly connected to the first adapter 110 and / or the second adapter, and is passed through the interior of the shell 120 through a third opening arranged on the side of the shell 120; the other end of the first locking member 140 is located outside the third opening on the side of the shell 120 (i.e., outside the shell 120).

[0035] One end of the first locking member 140 is located inside the third opening (i.e., inside the housing 120) and on the side of the first connecting member 110 and / or the second connecting member, and locks the connection between the first connecting member 110 and the tractor, and / or locks the connection between the second connecting member and the helicopter. The first locking member 140 may include a spring self-locking structure or a manual push-pull locking structure. The spring self-locking structure can trigger a force to force the spring when the first connecting member 110 contacts the matching connecting member on the tractor, and the first connecting member 110 is locked to the tractor by the elastic force of the spring. The manual push-pull connecting member is to push the first locking member 140 relative to the third opening of the housing 130 when the first connecting member 110 contacts the matching connecting member on the tractor, so that the first connecting member 110 is locked to the tractor; on the contrary, when the first locking member 140 is pulled out, the locking action is released.

[0036] Therefore, the present invention discloses a helicopter towing accessory, which is suitable for towing a variety of R-type helicopters. The towing accessory can make the connection and towing between the towing vehicle and the R-type helicopter safer and more reliable. It can realize the towing of different forms of R-type helicopters for ground movement, improve compatibility, make the cost of ground towing guarantee of R-type helicopters lower, and also take into account the simplicity and safety of operation.

[0037] Embodiment 2:

[0038] According to the embodiments of the present disclosure, Figure 2 As shown, the towing attachment 200 includes: a first connecting member 210, one end of which is connected to the towing vehicle; a second connecting member, which is arranged corresponding to the first connecting member 110, and one end of which is connected to the helicopter; an adapter 230, which is connected between the first connecting member 210 and the second connecting member, the other end of the first connecting member 210 is connected to the first connecting position 231 of the adapter 230, and the other end of the second connecting member is connected to the second connecting position of the adapter 230. The number of the second connecting members here is at least two.

[0039] According to the embodiments of the present disclosure, Figure 2 As shown, the adapter 230 includes: a sleeve 233, a first connection position 231 is set in the middle of the sleeve 233, and the first connection position 231 is used as a boundary to respectively include a left sleeve 2331 and a right sleeve 2332 that are integrally formed; an active rod, the active rod includes a left active rod 2341 and a right active rod 2342, the left active rod 2341 is sleeved in the left sleeve 2331, and the inner wall of the left sleeve 2331 serves as a slideway for the left active rod 2341, so that the left active rod 2341 can be telescoped relative to the left sleeve 2331, and the left active rod 2341 can be telescoped relative to the left sleeve 2331. 1 is provided with a left limit mark 2351 for marking the distance that the left active rod 2341 extends or retracts relative to the left sleeve 2331; the right active rod 2342 is sleeved in the right sleeve 2332, and the inner wall of the right sleeve 2332 serves as a slideway for the right active rod 2342, so that the right active rod 2342 can be extended or retracted relative to the right sleeve 2332, and the right limit mark 2352 is provided on the side wall of the right active rod 2342 for marking the distance that the right active rod 2342 extends or retracts relative to the right sleeve 2332. Therefore, the active rod can be extended or retracted relative to the sleeve 233, so that the traction accessory of the present invention can obtain a larger locking width, which is suitable for the traction connection of various types of skid-type helicopters and has a wider adaptability.

[0040] According to the embodiments of the present disclosure, Figure 2 , Figure 3A and Figure 3BAs shown, the second connection position includes a left fixing position 232 and a right fixing position 232'; the left fixing position 232 is provided with a left fixing portion 2361 connected to the top of the left active rod 2341 and located outside the left sleeve 2331; the right fixing position 232' is provided with a right fixing portion 2362 connected to the top of the right active rod 2342 and located outside the right sleeve 2332. By respectively providing the left and right fixing portions on the left and right fixing positions, a symmetrical fastening connection can be provided for the skid helicopter, so as to improve the safety and reliability of the helicopter and the tractor during the traction process. And, the second connecting member includes a left connecting member 221 and a right connecting member 222, the left connecting member 221 is provided on the left fixing portion 2361; the right connecting member 222 is provided on the right fixing portion 2362. By providing corresponding left and right connecting members on the corresponding left and right fixing portions, a more stable connection can be provided for the helicopter and the tractor.

[0041] According to the embodiments of the present disclosure, Figure 2 , Figure 3A and Figure 3B As shown, the left connecting member 221 includes: a left locking member 2211, which is arranged on the front side in the middle of the left fixing portion 2361; a left U-ring 2212, where both ends of the left U-ring 2212 are respectively arranged on the two side walls of the left fixing portion 2361, and the middle part of the left U-ring 2212 is located on the front side of the left fixing portion 2361 and is spaced a certain distance from the left locking member 2211; a left fixing member 2213, where the left fixing member 2213 is arranged at the top end of the left fixing portion 2361; and a left strap 2214, where one end of the left strap 2214 is arranged and connected to the left locking member 2211, and the main body of the left strap 2214 is passed through the left U-ring 2212 and fixedly connected to the left fixing member 2213.

[0042] like Figure 2 , Figure 3A and Figure 3B As shown, the right connecting member 222 includes: a right locking member 2221, which is arranged on the front side in the middle of the right fixing portion 2362; a right U-ring 2222, where both ends of the right U-ring 2222 are respectively arranged on the two side walls of the right fixing portion 2362, and the middle part of the right U-ring 2222 is located on the front side of the right fixing portion 2362 and is spaced a certain distance from the right locking member 2221; a right fixing member 2223, where the right fixing member 2223 is arranged at the top end of the right fixing portion 2362; a right strap 2224, where one end of the right strap 2224 is arranged and connected to the right locking member 2221, and the main body of the right strap 2224 is passed through the right U-ring 2222 and fixedly connected to the right fixing member 2223.

[0043] According to the embodiments of the present disclosure, Figure 2 , Figure 3A and Figure 3BAs shown, the adapter 230 also includes: a connection hole, which is arranged on the first connection position 231 and is formed by penetrating the outer wall of the sleeve 233; a bolt 240, which includes a wide end, a screw portion, and a thin end, which are integrally formed from top to bottom: the diameter of the wide end is larger than the diameter of the connection hole, and is clamped in the opening of the connection hole of the sleeve 233; the screw portion is sleeved in the connection hole, and a thread is arranged on the outer wall of the screw portion, and the thread matches the convex pattern in the connection hole; the diameter of the thin end is smaller than or equal to the diameter of the screw portion, and is penetrated through the lower opening of the connection hole of the sleeve 233, and is sleeved and connected with one end of the first connector 210. The first connector 210 can be fixedly connected to the sleeve 233 by the bolt 240, and when the first connector is connected to the tractor, the traction accessory is connected and fixed to the tractor.

[0044] According to the embodiments of the present disclosure, Figure 2 , Figure 3A and Figure 3B As shown, the adapter 230 further includes: a second locking member, which includes a left locking member 251 and a right locking member 252. The left locking member 251 is clamped in the left through hole on the outer wall of the left sleeve 2331 at the junction of the left sleeve 2331 and the left active rod 2341; the right locking member 252 is clamped in the right through hole on the outer wall of the right sleeve 2332 at the junction of the right sleeve 2332 and the right active rod 2342. The left and right active rods can be extended or retracted to the distance corresponding to the left and right sleeves to lock them, thereby ensuring the movement stability of the left and right active rods during the traction process, and ensuring the safety and reliability of the traction process.

[0045] Therefore, the present invention discloses a helicopter towing accessory, which is suitable for towing a variety of A-type helicopters. The towing accessory can make the connection and towing between the towing vehicle and the A-type helicopter safer and more reliable. It can realize the towing of different forms of A-type helicopters for ground movement, improve compatibility, make the cost of ground towing guarantee of A-type helicopters lower, and also take into account the simplicity and safety of operation.

[0046] Embodiment 3:

[0047] According to the embodiments of the present disclosure, Figure 4 As shown, the towing attachment 300 includes: a first connecting member 310, one end of which is connected to the towing vehicle; a second connecting member 320, which is arranged corresponding to the first connecting member 310, and one end of the second connecting member 320 is connected to the helicopter; an adapter 330, which is connected between the first connecting member 310 and the second connecting member 320, the other end of the first connecting member 310 is connected to the first connecting position 331 of the adapter 330, and the other end of the second connecting member 320 is connected to the second connecting position 332 of the adapter 330.

[0048] According to the embodiments of the present disclosure, Figure 4 As shown, the adapter 330 includes: a first connecting rod 340, the first connecting rod 340 is provided with a first connecting position 331; a second connecting rod 350, the second connecting rod 350 is located at the lower side of the first connecting rod 340 and is arranged parallel to the first connecting rod 340, a base 360, a first rod position corresponding to one end of the first connecting rod 340 is arranged on the front of the base 360; a second rod position corresponding to one end of the second connecting rod 350 is also arranged on the front of the base 360; a hydraulic cylinder 361, the hydraulic cylinder 361 is arranged on the front of the base 360, and the hydraulic cylinder 361 controls the first connecting rod 340 to achieve extension and retraction through the hydraulic system arranged in the base 360.

[0049] According to the embodiments of the present disclosure, Figure 4 As shown, the first connecting rod 340 includes: a rod sleeve 341, the inner end of which is arranged on the first rod position and connected to the base 360, and the outer end of which is located between the first rod position and the first connecting position 331; and a rod body 342, the inner end portion of which is sleeved in the rod sleeve 341. The inner end portion of the rod body 342 can be relatively telescopically slid in the rod sleeve 341 relative to the rod sleeve 341 fixed on the base 360, so as to realize the telescopic movement of the first connecting rod 340.

[0050] According to the embodiments of the present disclosure, Figure 4 As shown, the first connecting rod 340 also includes: a rod body limiting portion 343, the inner end of the rod body limiting portion 343 is fixedly connected to the outer end of the rod body 342, the width dimension of the rod body limiting portion 343 (the width dimension can be any width of the diameter or irregular cross-section) is greater than the width dimension of the rod body 342, and the inner end of the rod body limiting portion 343 is limited to the first connecting position 331. During the extension and retraction process of the rod body 342, the rod body limiting portion 343 moves relative to the first connecting position 331 along the extension direction of the first connecting rod 340.

[0051] According to the embodiments of the present disclosure, Figure 4As shown, the second connecting member 320 includes: a straight fork, the straight fork includes a fixing portion 321 and a fork end, the inner end of the fixing portion 321 is connected to the fixing fork end, and the outer end of the fixing portion 321 is fixedly connected to the top of the rod body 342; the fork end is U-shaped, including a left L-shaped member 3221 and a right L-shaped member 3222, and the left L-shaped member 3221 and the right L-shaped member 3222 are respectively formed by a long portion and a short portion in one piece, wherein the corresponding short portion end is arranged on the inner end of the fixing portion 321. The two L-shaped members of the fork end (i.e., the left L-shaped member 3221 and the right L-shaped member 3222) are provided with a structure that can be connected and fixed with the traction interface on the front wheel axle of the helicopter, and the front wheel of the helicopter is fixedly connected to the fork end of the straight fork through the fixing structure. It should be further explained that even when the front wheel of the helicopter does not have a towing interface, the front wheel can be fixed through this structure, so that when the first connecting member 310 is fixedly connected to the towing vehicle, the towing vehicle and the helicopter are connected through the towing accessory, thereby ensuring the towing safety and reliability between the towing vehicle and the helicopter, and enhancing the towing compatibility with different types of helicopters.

[0052] According to the embodiments of the present disclosure, Figure 4 As shown, the adapter 330 also includes: a wheel shovel, the wheel shovel includes a detachable part 322 and a shovel part 323, the inner end of the detachable part 322 is connected to the fixed shovel part 323, the outer end of the detachable part 322 is connected to the top of the second connecting rod 350, and the detachable part 322 and the top of the second connecting rod 350 are provided with a detachable connection structure; the shovel part 323 is located below the straight fork. After the straight fork is fixedly connected to the front wheel of the helicopter through the fork end, the first connecting rod 340 can drive the front wheel of the helicopter to extend and retract under the drive of the motor 361, and the front wheel is placed on the shovel part 323 of the wheel shovel, so that the front wheel of the helicopter is off the ground, which is conducive to better operability during the traction process.

[0053] According to the embodiments of the present disclosure, Figure 4 As shown, the adapter 330 also includes:

[0054] A fixed sleeve 370, the fixed sleeve 370 is arranged on the first connection position 331 and is sleeved on the outer wall of the first connecting rod 340, and the second connecting rod 350 is inserted into the fixed sleeve 370 and in the space below the first connecting rod 340; one end of the first adapter 310 corresponding to the first connection position 331 is arranged on the outer wall of the fixed sleeve 370 and below the second connecting rod 350; a sliding sleeve 372, the sliding sleeve 372 is arranged at the first connection position 331 and is fixedly connected to the upper part of the fixed sleeve 370, and part of the rod body 342 is sleeved inside the sliding sleeve 372; a fastener 371, the fastener 371 passes through the outer wall of the fixed sleeve 370 and is fixedly connected to the sliding sleeve 372. The fixing sleeve 370 is used to fix the first connecting member 310 and the adapter 330, and the fastener 371 is used to fasten the sliding sleeve 372 to the fixing sleeve 370. At the same time, the top end of the fastener 371 is exposed from the inner wall of the sliding sleeve 372, and the length of the top end exposed relative to the inner wall of the sliding sleeve 372 is less than or equal to the difference in width between the shaft limiting portion 343 and the shaft 342, and is used to limit the inner end of the shaft limiting portion 343 to the fixing sleeve 370. That is, when the first connecting rod 340 is in a retracted state (retracted to the original position and kept stationary), the inner end of the rod body limiting portion 343 is fixedly connected to the fastener 371 of the sliding sleeve 372 and is limited in the fixed sleeve 370. When the first connecting rod 340 is in an extended state (extended to the maximum extension distance of the rod sleeve 341 and kept stationary), the inner end of the rod body limiting portion 343 can be located at the top position of the first connecting rod 340, which is the farthest away from the fixed sleeve 370. At this time, the front end portion of the rod body 342 sleeved in the rod sleeve 341 will be exposed to the outside.

[0055] Therefore, the present invention discloses a helicopter towing accessory, which is suitable for towing a variety of L-type helicopters. The towing accessory can make the connection and towing between the towing vehicle and the L-type helicopter safer and more reliable. It can realize the towing of different forms of L-type helicopters for ground movement, improve compatibility, make the cost of ground towing guarantee of L-type helicopters lower, and also take into account the simplicity and safety of operation.

[0056] In summary, the helicopter towing accessory proposed in the present invention can be well adapted to various types of helicopters, such as wheeled, skid-type or landing gear helicopters, has high compatibility and simple operation, improves towing efficiency, reduces ground towing costs, and effectively ensures towing safety.

[0057] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A helicopter towing accessory, which enables a towing vehicle to tow the helicopter, characterized in that: include: a first connecting member, one end of which is connected to the tractor; A second connecting member, the second connecting member is arranged corresponding to the first connecting member, and one end of the second connecting member is connected to the helicopter; An adapter connected between the first connector and the second connector, the other end of the first connector being connected to the first connection position of the adapter, and the other end of the second connector being connected to the second connection position of the adapter; Wherein, the adapter comprises: A first connecting rod, wherein the first connecting rod is provided with a first connecting position; a second connecting rod, the second connecting rod is located at the lower side of the first connecting rod and is arranged parallel to the first connecting rod, A base, wherein a first rod position corresponding to one end of the first connecting rod is arranged on the front side of the base; and a second rod position corresponding to one end of the second connecting rod is also arranged on the front side of the base; A hydraulic cylinder, wherein the hydraulic cylinder is arranged on the front side of the base; Wherein, the first connecting rod comprises: A rod sleeve, wherein the inner end of the rod sleeve is arranged on the first rod position and connected to the base, and the outer end of the rod sleeve is located between the first rod position and the first connection position; A shaft, wherein the shaft portion is sleeved in the rod sleeve; A shaft limiting portion, wherein the inner end of the shaft limiting portion is fixedly connected to the outer end of the shaft, the width dimension of the shaft limiting portion is greater than the width dimension of the shaft, the inner end of the shaft limiting portion is limited to the first connection position, and the width dimension is any width of a diameter or an irregular cross section; in, The second connecting member comprises: A straight fork, the straight fork comprising a fixing portion and a fork end, The inner end of the fixing portion is connected and fixed to the fork end, and the outer end of the fixing portion is fixedly connected to the top end of the shaft; The fork end is arranged in a U shape, including a left L-shaped piece and a right L-shaped piece, and the short ends of the left L-shaped piece and the right L-shaped piece are arranged on the inner end of the fixing part; Wherein, the adapter also includes: A wheel shovel, the wheel shovel comprising a detachable part and a shovel part, The inner end of the detachable part is connected and fixed to the shovel part, and the outer end of the detachable part is connected to the top end of the second connecting rod; The shovel portion is located below the straight fork; Wherein, the adapter also includes: A fixing sleeve, wherein the fixing sleeve is arranged on the first connection position and sleeved on the outer wall of the first connecting rod, and the second connecting rod is inserted into the fixing sleeve and in a space below the first connecting rod; One end of a first adapter corresponding to the first connection position is arranged on the outer wall of the fixing sleeve and below the second connecting rod; A sliding sleeve, the sliding sleeve is arranged at the first connection position and fixedly connected to the upper part of the fixed sleeve, and a part of the rod body is sleeved inside the sliding sleeve; A fastener is passed through the outer wall of the fixing sleeve and fixedly connected to the sliding sleeve.

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