CN110893912A

CN110893912A - Helicopter traction accessory

Info

Publication number: CN110893912A
Application number: CN201911326536.1A
Authority: CN
Inventors: 王炳军; 肖巍; 魏丹; 张盼君; 许英; 陈效吉
Original assignee: HAIFENG NAVIGATION TECHNOLOGY Co Ltd
Current assignee: HAIFENG NAVIGATION TECHNOLOGY Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-20

Abstract

The invention discloses a helicopter traction accessory, wherein one end of the helicopter traction accessory is connected with a first connecting piece on a tractor, one end of the helicopter traction accessory is connected with a second connecting piece on a helicopter, and an adapter piece is connected between the first connecting piece and the second connecting piece, the other end of the first connecting piece is connected with a first connecting position of the adapter piece, and the other end of the second connecting piece is connected with a second connecting position of the adapter piece, so that connection is established between the tractor and the helicopter, and the tractor can realize traction on the helicopter. The traction accessory can ensure that the connection and traction of the tractor and the helicopter are safer and more reliable. The ground moving traction of the skid type or wheel type helicopters of different types can be realized, the compatibility is improved, the cost of the ground traction guarantee of the helicopters is lower, and the simplicity and the safety of operation are considered at the same time.

Description

Helicopter traction accessory

Technical Field

The invention relates to the technical field of aviation equipment, in particular to a traction accessory applied to helicopter traction.

Background

During maintenance and service of a helicopter, it is necessary to achieve traction of the helicopter to ensure safe directional movement of the helicopter over the ground. At present, helicopters of different types can be defined due to their different take-off tonnage, for example, in the international standard, the tonnage of light and ultra-light helicopters is generally 3 tons or less. The takeoff tonnage of the ultra-light skid type undercarriage helicopter is less than 1 ton; and the takeoff tonnage of the light helicopter is between 1 ton and 3 tons; the takeoff tonnage of the small and medium-sized helicopters is between 3 tons and 6 tons. Therefore, different types of helicopter tractors are required to be equipped for different helicopters, and each tractor is different in appearance, size, principle and the like. For example, a typical skid helicopter has a dedicated tractor interface, typically pulled by a human power, or pulled by a small manual tractor, matching a dedicated tractor; in addition, other types of skid helicopters employ a manually propelled or completely different electric tractor to pull and mate with a tow bar that takes up a relatively large amount of space.

In summary, in the prior art, different types of helicopters need to be matched with different traction devices, the traction devices do not have versatility among diversified helicopters, safety and reliability are low, and operation and maintenance costs are high.

Disclosure of Invention

Technical problem to be solved

The invention discloses a compatible traction accessory of a helicopter, which is used for traction connection between the helicopter and a tractor, and aims to solve the problems that the existing helicopter traction device has no diversified universality among helicopters, low safety and reliability and high operation and maintenance cost.

(II) technical scheme

One aspect of the present invention discloses a helicopter towing attachment for enabling a towing vehicle to tow a helicopter, comprising: one end of the first connecting piece is connected to the tractor; the second connecting piece is arranged corresponding to the first connecting piece, and one end of the second connecting piece is connected to the helicopter; the adapter is connected between the first connecting piece and the second connecting piece, the other end of the first connecting piece is connected to a first connecting position of the adapter, and the other end of the second connecting piece is connected to a second connecting position of the adapter.

Optionally, the traction attachment further comprises: the casing, the casing is including the mounting hole, and the adaptor wears to locate inside the casing, and set up in the mounting hole, is provided with the first connecting piece that one end and the first position connection of adaptor are fixed on the front first opening that corresponds the mounting hole of casing to and be provided with the second connecting piece that one end and the second position connection of adaptor are fixed on the back second opening that corresponds the mounting hole of casing.

Optionally, the traction attachment further comprises: one end of the first locking piece is fixedly connected to the first adapter piece and/or the second adapter piece and penetrates through the shell through a third opening formed in the side face of the shell; the other end of the first locking member is positioned outside the third opening in the side of the housing.

Optionally, the adaptor comprises: the middle of the sleeve is provided with a first connecting position, and the sleeve is bounded by the first connecting position and respectively comprises a left sleeve and a right sleeve which are integrally formed; the movable rod comprises 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 is used as a slideway of the left movable rod, and a left limiting mark is arranged 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 is used as a slide way of the right movable rod, and a right limiting mark is arranged on the side wall of the right movable rod.

Optionally, the second connection bit comprises a left fixed bit and a right fixed bit; the left fixing part is connected with the top end of the left movable rod and positioned outside the left sleeve; the right fixing part is connected with the top end of the right movable rod and positioned outside the right sleeve; the second connecting piece comprises a left connecting piece and a right connecting piece, and the left connecting piece is arranged on the left fixing part; the right connecting piece is arranged on the right fixing part.

Optionally, the left connector comprises: the left locking piece is arranged on the front surface in the middle of the left fixing part; 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 positioned on the front surface of the left fixing part and is spaced from the left locking part by a certain distance; the left fixing part is arranged at the top end of the left fixing part; one end of the left bandage is connected to the left locking piece, and the main body part of the left bandage penetrates through the left U-shaped ring and is fixedly connected to the left fixing piece; and the right connecting piece includes: the right locking piece is arranged on the front surface in the middle of the right fixing part; the two ends of the right U-shaped ring are respectively arranged on the two side walls of the right fixing part, and the middle part of the right U-shaped ring is positioned on the front surface of the right fixing part and is spaced from the right locking piece by a certain distance; the right fixing piece is arranged at the top end of the right fixing part; the one end of right bandage is established and is connected on right retaining member, and right U ring, fixed connection are on right retaining member are worn to locate by the main part of right bandage.

Optionally, the adaptor further comprises: the connecting hole is arranged on the first connecting position and penetrates through the sleeve; the bolt comprises a wide end, a screw rod part and a thin part end which are sequentially formed from top to bottom in an integrated mode: the diameter size of the wide end is larger than that of the connecting hole, and the wide end is clamped on an opening on the connecting hole of the sleeve; the screw rod part is sleeved in the connecting hole, the outer wall of the screw rod part is provided with threads, and the threads are matched with the convex patterns in the connecting hole; the diameter size of the thin end is smaller than or equal to that of the screw rod part, and a lower opening of the connecting hole of the sleeve is penetrated and connected with one end of the first connecting piece in a sleeved mode.

Optionally, the adaptor further comprises: the second locking part comprises a left locking part and a right locking part, and the left locking part is clamped on the intersection position of the sleeve and the left movable rod and in a left through hole in the outer wall surface of the sleeve; the right locking piece is clamped on the intersection position of the sleeve and the right movable rod and in a right through hole on the outer wall surface of the sleeve.

Optionally, the adaptor comprises: the first connecting rod is provided with a first connecting position; a second connecting rod which is positioned at the lower side of the first connecting rod and is arranged in parallel with the first connecting rod,

the front surface of the base is provided with a first rod position correspondingly connected with one end of the first connecting rod; the front surface of the base is also provided with a second rod position correspondingly connected with one end of the second connecting rod; the hydraulic cylinder is arranged on the front face of the base.

Optionally, the first link comprises: the inner end of the rod sleeve is arranged on the first rod position and connected with the base, and the outer end of the rod sleeve is positioned between the first rod position and the first connecting position; the inner end part of the rod body is sleeved in the rod sleeve; the inner end of the rod body limiting part is fixedly connected with the outer end of the rod body, the width size of the rod body limiting part is larger than that of the rod body, and the inner end of the rod body limiting part is limited at the first connecting position; the straight fork comprises a fixing part and a fork end, the inner end of the fixing part is connected with the fixing fork end, and the outer end of the fixing part is fixedly connected with the top end of the rod body; the fork end is the setting of U type, including left L type spare and right L type spare, and the short portion end setting of left L type spare and right L type spare is on the inner end of fixed part.

Optionally, the adaptor further comprises: the wheel shovel comprises a detachable part and a shovel part, the inner end of the detachable part is connected with 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 positioned below the straight fork.

Optionally, the adaptor further comprises: the fixing sleeve is arranged on the first connecting position and sleeved on the outer wall of the first connecting rod, and the second connecting rod penetrates through the fixing sleeve and a space below the first connecting rod; one end of a first connecting piece corresponding to the first connecting position is arranged on the outer wall of the fixed sleeve and below the second connecting rod; the sliding sleeve is arranged at the first connecting position and is fixedly connected to the upper part of the fixed sleeve, and part of the rod body is sleeved in the sliding sleeve; the fastener, the outer wall of fixed cover, fixed connection sliding sleeve are worn to establish by the fastener.

(III) advantageous effects

The invention discloses a helicopter traction accessory, wherein one end of the helicopter traction accessory is connected with a first connecting piece on a tractor, one end of the helicopter traction accessory is connected with a second connecting piece on a helicopter, and an adapter piece is connected between the first connecting piece and the second connecting piece, the other end of the first connecting piece is connected with a first connecting position of the adapter piece, and the other end of the second connecting piece is connected with a second connecting position of the adapter piece, so that connection is established between the tractor and the helicopter, and the tractor can realize traction on the helicopter. The traction accessory can ensure that the connection and traction of the tractor and the helicopter are safer and more reliable. The ground moving traction of helicopters of different types (such as wheels, skid type or landing frame type) can be realized, the compatibility is improved, the cost of the ground traction guarantee of the helicopters is lower, and the simplicity and the safety of operation are considered at the same time.

Drawings

FIG. 1 is a helicopter towing attachment of the present invention in embodiment 1;

FIG. 2 is a helicopter towing attachment of embodiment 2 of the present invention;

FIG. 3A is a left attachment member of a helicopter traction accessory according to embodiment 2 of the present invention;

FIG. 3B is a right attachment member of a helicopter traction accessory according to embodiment 2 of the present invention;

fig. 4 is a helicopter towing attachment of embodiment 3 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

Specifically, the helicopter traction accessory can be used as a connecting accessory between a helicopter and a tractor of the helicopter, and meanwhile, when the tractor moves, the helicopter connected with the traction accessory can move along with the tractor, so that the tractor can pull the helicopter. No matter the first connecting piece or the second connecting piece, the connecting piece is provided with at least two connecting ends, each connecting end is provided with a connecting port, and a specific port can be designed to be a clamping opening or a locking opening and is matched with the connecting port of the corresponding connecting end on the tractor or the helicopter so as to complete the connection of the first connecting piece and the tractor or the connection of the second connecting piece and the helicopter. In certain cases, it is desirable that the snap-fit or lock-in opening have a swivel or ball design to facilitate relative rotation of the connection port on the first connection member and the connection port on the tow vehicle, the connection port on the second connection member and the connection port on the helicopter to facilitate steering movement during towing, and the like.

In order to more clearly describe the technical scheme of the invention, three specific examples are as follows:

example 1:

according to an embodiment of the present disclosure, as shown in fig. 1, a traction accessory 100 includes: a first connecting member 110, one end of the first connecting member 110 being connected to a tractor; the second connecting piece is arranged corresponding to the first connecting piece, and one end of the second connecting piece is connected to the helicopter; the adaptor 130 is connected between the first connector 110 and the second connector, the other end of the first connector 110 is connected to the first connection position of the adaptor 130, and the other end of the second connector is connected to the second connection position of the adaptor 130.

According to an embodiment of the present disclosure, as shown in fig. 1, the traction attachment 100 further includes: the housing 120, the housing 120 is used for providing accommodation space and support space for the first connecting piece 110, the second connecting piece and the adaptor 130, the housing 120 includes a mounting hole, and the adaptor 130 is arranged inside the housing 120 in a penetrating manner and is arranged in the mounting hole. A first connecting piece 110 with one end fixedly connected with the first connecting position of the adaptor 130 is arranged on the first opening of the front surface of the casing 120 corresponding to the mounting hole, and a second connecting piece with one end fixedly connected with the second connecting position of the adaptor 130 is arranged on the second opening of the back surface of the casing 120 corresponding to the mounting hole. In the embodiment of the present invention, the second connecting element is correspondingly disposed on the back surface of the housing 120 of the first connecting element 110. That is, a mounting hole is formed through the housing 120, a first opening of the mounting hole is located on the front surface of the housing 120, a second opening of the mounting hole is located on the back surface of the housing 120, and the first connecting member 110, the adapter 130 and the second connecting member are sequentially disposed in the mounting hole from the first opening on the front surface to the second opening on the back surface of the housing 120.

According to an embodiment of the present disclosure, as shown in fig. 1, the traction attachment 100 further includes: one end of the first locking member 140 is fixedly connected to the first adapter 110 and/or the second adapter, and is inserted into the housing 120 through a third opening formed in a side surface of the housing 120; the other end of the first locking member 140 is positioned outside the third opening in the side of the housing 120 (i.e., outside the housing 120).

The first locking member 140 is located in the third opening (i.e. inside the housing 120) and at a 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 towing vehicle, and/or locks the connection between the second connecting member and the helicopter, and the first locking member 140 may include a spring self-locking structure or a manual push-pull locking result, and the spring self-locking structure may stress the spring by an activation force when the first connecting member 110 is in contact with a mating connecting member on the towing vehicle, so as to lock the first connecting member 110 to the towing vehicle by an elastic force of the spring. A manual push-pull linkage that effects locking of the first linkage 110 to the towing vehicle when the first linkage 110 is urged against the third opening of the housing 130 when the first linkage 140 is in contact with a mating linkage on the towing vehicle; conversely, pulling out the first locking member 140 corresponds to releasing the locking action.

Therefore, the invention discloses a traction accessory for a helicopter, which is suitable for traction of various R-shaped helicopters and can ensure that the connection and traction of a tractor and the R-shaped helicopters are safer and more reliable. The ground moving traction of the R-shaped helicopters in different forms can be realized, the compatibility is improved, the ground traction guarantee cost of the R-shaped helicopters is lower, and the simplicity and the safety of operation are considered at the same time.

Example 2:

according to an embodiment of the present disclosure, as shown in fig. 2, the traction attachment 200 includes: a first connecting member 210, one end of the first connecting member 210 being connected to a tractor; the second connecting piece is arranged corresponding to the first connecting piece 110, and one end of the second connecting piece is connected to the helicopter; the adaptor 230 is connected between the first connector 210 and the second connector, the other end of the first connector 210 is connected to the first connection position 231 of the adaptor 230, and the other end of the second connector is connected to the second connection position of the adaptor 230. The number of the second connecting pieces is at least two.

According to an embodiment of the present disclosure, as shown in fig. 2, the adaptor 230 includes: a sleeve 233, wherein a first connecting position 231 is arranged in the middle of the sleeve 233, and the sleeve 233 is bounded by the first connecting position 231 and comprises a left sleeve 2331 and a right sleeve 2332 which are integrally formed; the movable rod comprises a left movable rod 2341 and a right movable rod 2342, the left movable rod 2341 is sleeved in the left sleeve 2331, the inner wall of the left sleeve 2331 serves as a slideway of the left movable rod 2341, so that the left movable rod 2341 extends and retracts relative to the left sleeve 2331, and a left limiting mark 2351 is arranged on the side wall of the left movable rod 2341 and used for marking the extending or retracting distance of the left movable rod 2341 relative to the left sleeve 2331; the right movable rod 2342 is sleeved in the right sleeve 2332, the inner wall of the right sleeve 2332 serves as a slideway of the right movable rod 2342, so that the right movable rod 2342 extends and retracts relative to the right sleeve 2332, and a right limiting mark 2352 is arranged on the side wall of the right movable rod 2342 and used for marking the extending or retracting distance of the right movable rod 2342 relative to the right sleeve 2332. Therefore, the movable rod can stretch relative to the sleeve 233, so that the traction accessory disclosed by the invention can obtain larger locking width, is suitable for traction connection of various skid helicopters, and has wider adaptability.

According to an embodiment of the present disclosure, as shown in fig. 2, 3A, and 3B, 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 part 2361 which is connected with the top end of the left movable rod 2341 and is positioned outside the left sleeve 2331; the right fixing position 232' is provided with a right fixing part 2362 which is connected to the top end of the right movable rod 2342 and is positioned outside the right sleeve 2332, and symmetrical fastening connection can be provided for the skid type helicopter through the left fixing part and the right fixing part which are respectively arranged on the left fixing position and the right fixing position, so that the safety and the reliability of the helicopter and the tractor are improved in the traction process. And, the second link includes left link 221 and right link 222, the left link 221 is set up on the left fixed portion 2361; the right connecting member 222 is disposed on the right fixing portion 2362. Through set up corresponding left and right connecting piece on corresponding left and right fixed part, can provide more stable connection effect for helicopter and tractor.

According to an embodiment of the present disclosure, as shown in fig. 2, 3A, and 3B, the left connection member 221 includes: a left locking member 2211, the left locking member 2211 is arranged on the front surface in the middle of the left fixing portion 2361; two ends of the left U-shaped ring 2212 are respectively arranged on two side walls of the left fixing portion 2361, and the middle portion of the left U-shaped ring 2212 is positioned on the front face of the left fixing portion 2361 and is spaced from the left locking member 2211 by a certain distance; a left fixing piece 2213, the left fixing piece 2213 is arranged at the top end of the left fixing part 2361; left bandage 2214, the one end of left bandage 2214 is established and is connected on left retaining member 2211, and left U ring 2212 is worn to locate by the main part of left bandage 2214, fixed connection is on left mounting 2213.

As shown in fig. 2, 3A and 3B, the right connector 222 includes: a right locking piece 2221, the right locking piece 2221 is disposed on the front face in the middle of the right fixing portion 2362; two ends of the right U-ring 2222 are respectively disposed on two side walls of the right fixing portion 2362, and a middle portion of the right U-ring 2222 is located on the front surface of the right fixing portion 2362 and spaced from the right locking piece 2221 by a certain distance; the right fixing part 2223, the right fixing part 2223 is disposed at the top end of the right fixing part 2362; one end of the right strap 2224 and one end of the right strap 2224 are connected to the right locking member 2221, and the main body portion of the right strap 2224 is inserted into the right U-shaped ring 2222 and is fixedly connected to the right fixing member 2223.

According to an embodiment of the present disclosure, as shown in fig. 2, 3A, and 3B, the adaptor 230 further includes: a connection hole formed on the first connection position 231 and penetrating the outer wall of the casing 233; the bolt 240, the bolt 240 includes, from top to bottom, a wide end, a screw portion, and a thin portion end that are integrally formed: the diameter size of the wide end is larger than that of the connecting hole, and the wide end is clamped in an opening on the connecting hole of the sleeve 233; the screw rod part is sleeved in the connecting hole, the outer wall of the screw rod part is provided with threads, and the threads are matched with the convex patterns in the connecting hole; the diameter of the thin end is smaller than or equal to the diameter of the screw portion, and a lower opening of the connection hole of the casing 233 is formed through the thin end and is connected to one end of the first connection member 210. The first connecting part 210 can be fixedly connected to the sleeve 233 by means of the screw 240, and when the first connecting part is connected to the towing vehicle, the fastening of the towing attachment to the towing vehicle is achieved.

According to an embodiment of the present disclosure, as shown in fig. 2, 3A, and 3B, the adaptor 230 further includes: the second locking member comprises a left locking member 251 and a right locking member 252, the left locking member 251 is clamped on a junction of the left sleeve 2331 and the left movable rod 2341 and in a left through hole in the outer wall surface of the left sleeve 2331; the right locking piece 252 is clamped in a right through hole in the outer wall surface of the right sleeve 2332 at the intersection of the right sleeve 2332 and the right movable rod 2342. The left and right movable rods can be extended or retracted to be locked by the distance corresponding to the left and right sleeves through the left and right locking pieces, so that the motion stability of the left and right movable rods in the traction process is ensured, and the safety and the reliability of the traction process are ensured.

Therefore, the invention discloses a traction accessory for a helicopter, which is suitable for traction of various A-type helicopters and can ensure that the connection and traction of a tractor and the A-type helicopter are safer and more reliable. The ground moving traction of the A-type helicopters in different forms can be realized, the compatibility is improved, the cost of the ground traction guarantee of the A-type helicopters is lower, and the simplicity and the safety of operation are also considered.

Example 3:

according to an embodiment of the present disclosure, as shown in fig. 4, the traction attachment 300 includes: a first connecting member 310, one end of the first connecting member 310 being connected to the towing vehicle; the second connecting piece 320, the second connecting piece 320 is arranged corresponding to the first connecting piece 310, and one end of the second connecting piece 320 is connected to the helicopter; the adaptor 330 is connected between the first connector 310 and the second connector 320, the other end of the first connector 310 is connected to the first connection position 331 of the adaptor 330, and the other end of the second connector 320 is connected to the second connection position 332 of the adaptor 330.

According to an embodiment of the present disclosure, as shown in fig. 4, the adaptor 330 includes: a first link 340, the first link 340 being provided with a first connection site 331; the second connecting rod 350 is positioned at the lower side of the first connecting rod 340 and is arranged in parallel with the first connecting rod 340, and the front surface of the base 360 is provided with a first rod position correspondingly connected with one end of the first connecting rod 340; a second rod position correspondingly connected with one end of the second connecting rod 350 is also arranged on the front surface of the base 360; the hydraulic cylinder 361 is arranged on the front face of the base 360, and the hydraulic cylinder 361 controls the first connecting rod 340 to stretch and retract through a hydraulic system arranged in the base 360.

According to an embodiment of the present disclosure, as shown in fig. 4, the first link 340 includes: the inner end of the rod sleeve 341 is arranged on the first rod position and connected with the base 360, and the outer end of the rod sleeve 341 is arranged between the first rod position and the first connecting position 331; a shaft 342, an inner end portion of the shaft 342 is partially sleeved in the sleeve 341. The inner end portion of the shaft 342 can relatively slide in the sleeve 341 in a telescopic manner with respect to the sleeve 341 fixed to the base 360, thereby extending and contracting the first link 340.

According to an embodiment of the present disclosure, as shown in fig. 4, the first link 340 further includes: the inner end of the shaft limiting part 343 is fixedly connected with the outer end of the shaft 342, the width dimension (the width dimension may be any width of a diameter or an irregular cross section) of the shaft limiting part 343 is larger than that of the shaft 342, the inner end of the shaft limiting part 343 is limited at the position of the first connecting position 331, and the shaft 342 moves in the extending direction of the first connecting rod 340 relative to the first connecting position 331 in the extending and retracting process.

According to an embodiment of the present disclosure, as shown in fig. 4, the second connector 320 includes: the straight fork comprises a fixing part 321 and a fork end, the inner end of the fixing part 321 is connected with the fixing fork end, and the outer end of the fixing part 321 is fixedly connected with the top end of the rod body 342; the fork ends are U-shaped and include a left L-shaped member 3221 and a right L-shaped member 3222, the left L-shaped member 3221 and the right L-shaped member 3222 are respectively and integrally formed by a long portion and a short portion, wherein the corresponding short portion ends are disposed on the inner end of the fixing portion 321. Two L-shaped parts (namely a left L-shaped part 3221 and a right L-shaped part 3222) at the fork ends are provided with structures which can be connected and fixed with a traction interface on a front wheel axle of the helicopter, and the front wheel of the helicopter is fixedly connected to the fork ends of the straight forks through the fixed structures. It should be further noted that even when the front wheel of the helicopter has no towing interface, the front wheel can be fixed through the 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 attachment, the towing safety and reliability between the towing vehicle and the helicopter are ensured, and the towing compatibility of different types of helicopters is enhanced.

According to an embodiment of the present disclosure, as shown in fig. 4, the adaptor 330 further includes: the wheel shovel comprises a detachable part 322 and a shovel part 323, the inner end of the detachable part 322 is connected with the fixed shovel part 323, the outer end of the detachable part 322 is connected with the top end of the second connecting rod 350, and the detachable part 322 and the top end of the second connecting rod 350 are provided with detachable structures; the shovel portion 323 is located below the straight fork. After the straight fork is fixedly connected with the front wheel of the helicopter through the fork end, the first connecting rod 340 can drive the front wheel of the helicopter to stretch under the driving 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 lifted off the ground, and better operability in the traction process is facilitated.

According to an embodiment of the present disclosure, as shown in fig. 4, the adaptor 330 further includes:

the fixing sleeve 370, the fixing sleeve 370 is disposed on the first connecting position 331 and sleeved on the outer wall of the first connecting rod 340, and the second connecting rod 350 is disposed in the fixing sleeve 370 and in the space below the first connecting rod 340 in a penetrating manner; one end of the first rotating member 310 corresponding to the first connecting position 331 is arranged on the outer wall of the fixing sleeve 370 and below the second connecting rod 350; the sliding sleeve 372 is arranged at the first connecting position 331 and fixedly connected to the upper part of the fixing sleeve 370, and the part of the rod body 342 is sleeved inside the sliding sleeve 372; the fastener 371 passes through the outer wall of the fixing sleeve 370 and is fixedly connected with the sliding sleeve 372. The fixing sleeve 370 is used for fixedly connecting the first connecting member 310 with the adaptor 330, the fastener 371 is used for fastening the sliding sleeve 372 on the fixing sleeve 370, meanwhile, the top end of the fastener 371 is exposed out of the inner wall of the sliding sleeve 372, the length of the top end exposed out of the inner wall of the sliding sleeve 372 is less than or equal to the difference of the width sizes between the shaft body limiting part 343 and the shaft body 342, and the inner end of the shaft body limiting part 343 is limited in the fixing sleeve 370. That is, when the first link 340 is in a retracted state (retracted to the original position and kept still), the inner end of the shaft stopper 343 is stopped by the fastener 371 fixedly connected to the sliding sleeve 372 in the fixing sleeve 370, and when the first link 340 is in an extended state (extended to the maximum extension distance of the sleeve 341 and kept still), the inner end of the shaft stopper 343 may be located at the top end of the first link 340, which is farthest from the fixing sleeve 370, and at this time, the front end portion of the sleeve 341 sleeved with the shaft 342 is exposed.

Therefore, the invention discloses a traction accessory for a helicopter, which is suitable for the traction of various L-shaped helicopters and can ensure that the connection and traction of a tractor and the L-shaped helicopters are safer and more reliable. The ground moving traction of the L-shaped helicopters in different forms can be realized, the compatibility is improved, the cost of the ground traction guarantee of the L-shaped helicopters is lower, and the simplicity and the safety of operation are also considered.

In conclusion, the helicopter traction accessory provided by the invention can be well suitable for helicopters in various forms, such as wheeled helicopters, skid-type helicopters or landing-type helicopters, has high compatibility and simple operation, improves the traction efficiency, reduces the ground traction cost and effectively ensures the traction safety.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A helicopter towing attachment for a towing vehicle to effect towing of a helicopter, comprising:

one end of the first connecting piece is connected to the tractor;

the second connecting piece is arranged corresponding to the first connecting piece, and one end of the second connecting piece is connected to the helicopter;

the adaptor is connected between the first connecting piece and the second connecting piece, the other end of the first connecting piece is connected with the first connecting position of the adaptor, and the other end of the second connecting piece is connected with the second connecting position of the adaptor.

2. A helicopter traction accessory as defined in claim 1, further comprising:

the shell comprises a mounting hole, the adapter is arranged in the shell in a penetrating way and is arranged in the mounting hole,

the front surface of the shell is provided with a first connecting piece with one end fixedly connected with the first connecting position of the adapter piece, which corresponds to the first opening of the mounting hole, and the back surface of the shell is provided with a second connecting piece with one end fixedly connected with the second connecting position of the adapter piece, which corresponds to the second opening of the mounting hole.

3. A helicopter traction accessory as defined in claim 2, further comprising:

one end of the first locking piece is fixedly connected to the first adapter piece and/or the second adapter piece and penetrates through the shell through a third opening formed in the side face of the shell; the other end of the first locking member is located outside the third opening in the side of the housing.

4. A helicopter traction accessory according to claim 1, wherein said adaptor includes:

the middle of the sleeve is provided with a first connecting position, and the sleeve respectively comprises a left sleeve and a right sleeve which are integrally formed by taking the first connecting position as a boundary;

a movable rod, which comprises 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 is used as a slideway of the left movable rod, and a left limiting mark is arranged 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 is used as a slide way of the right movable rod, and a right limiting mark is arranged on the side wall of the right movable rod.

5. The helicopter traction accessory of claim 4,

the second connecting position comprises a left fixing position and a right fixing position;

the left fixing position is provided with a left fixing part which is connected with the top end of the left movable rod and is positioned outside the left sleeve;

the right fixing position is provided with a right fixing part which is connected with the top end of the right movable rod and is positioned outside the right sleeve; and

the second connecting piece comprises a left connecting piece and a right connecting piece,

the left connecting piece is arranged on the left fixing part;

the right connecting piece is arranged on the right fixing part.

6. The helicopter traction accessory of claim 5,

the left connecting piece includes:

the left locking piece is arranged on the front surface in the middle of the left fixing part;

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 positioned on the front surface of the left fixing part and is spaced from the left locking part by a certain distance;

the left fixing part is arranged at the top end of the left fixing part;

one end of the left binding band is connected to the left locking piece, and the main body part of the left binding band penetrates through the left U-shaped ring and is fixedly connected to the left fixing piece; and

the right connecting piece includes:

the right locking piece is arranged on the front surface in the middle of the right fixing part;

the two ends of the right U-shaped ring are respectively arranged on the two side walls of the right fixing part, and the middle part of the right U-shaped ring is positioned on the front surface of the right fixing part and is spaced from the right locking piece by a certain distance;

the right fixing piece is arranged at the top end of the right fixing part;

the one end of right side bandage establish connect in on the right locking piece, the main part of right side bandage is worn to locate right U ring, fixed connection in on the right mounting.

7. The helicopter traction accessory of claim 4, wherein the adapter further comprises:

the connecting hole is arranged on the first connecting position and penetrates through the sleeve;

the bolt comprises a wide end, a screw rod part and a thin part end which are sequentially and integrally formed from top to bottom:

the diameter size of the wide end is larger than that of the connecting hole, and the wide end is clamped on an opening on the connecting hole of the sleeve;

the screw rod part is sleeved in the connecting hole, threads are arranged on the outer wall of the screw rod part, and the threads are matched with the convex patterns in the connecting hole;

the diameter size of thin portion end is less than or equal to the diameter size of screw rod portion wears to establish sheathed tube connecting hole under shed, with the pot head of first connecting piece is established and is connected.

8. The helicopter traction accessory of claim 4, wherein the adapter further comprises:

a second locking member including a left locking member and a right locking member,

the left locking piece is clamped on the intersection position of the sleeve and the left movable rod and in a left through hole in the outer wall surface of the sleeve;

the right locking piece is clamped on the intersection position of the sleeve and the right movable rod and in a right through hole in the outer wall surface of the sleeve.

9. A helicopter traction accessory according to claim 1, wherein said adaptor includes:

the first connecting rod is provided with a first connecting position;

a second connecting rod which is positioned at the lower side of the first connecting rod and is arranged in parallel with the first connecting rod,

the front surface of the base is provided with a first rod position correspondingly connected with one end of the first connecting rod; the front surface of the base is also provided with a second rod position correspondingly connected with one end of the second connecting rod;

the hydraulic cylinder is arranged on the front face of the base.

10. A helicopter traction accessory as claimed in claim 9, wherein the first link comprises:

the inner end of the rod sleeve is arranged on the first rod position and connected with the base, and the outer end of the rod sleeve is positioned between the first rod position and the first connecting position;

the rod body is partially sleeved in the rod sleeve;

the inner end of the rod body limiting part is fixedly connected with the outer end of the rod body, the width size of the rod body limiting part is larger than that of the rod body, and the inner end of the rod body limiting part is limited at the first connecting position;

the second connector includes:

a straight fork comprising a fixing part and a fork end,

the inner end of the fixing part is connected and fixed with the fork end, and the outer end of the fixing part is fixedly connected with the top end of the rod body;

the fork end is the setting of U type, including left L type spare and right L type spare, the short portion end setting of left side L type spare and right L type spare is in on the inner end of fixed part.

11. A helicopter traction accessory as claimed in claim 9, wherein the adapter further comprises:

a wheel shovel, the wheel shovel comprising a detachable portion and a shovel portion,

the inner end of the detachable part is fixedly connected with the shovel part, and the outer end of the detachable part is connected with the top end of the second connecting rod;

the shovel part is positioned below the straight fork.

12. A helicopter traction accessory as claimed in claim 9, wherein the adapter further comprises:

the fixing sleeve is arranged on the first connecting position and sleeved on the outer wall of the first connecting rod, and the second connecting rod penetrates through the fixing sleeve and a space below the first connecting rod;

one end of a first connecting piece corresponding to the first connecting position is arranged on the outer wall of the fixed sleeve and below the second connecting rod;

the sliding sleeve is arranged at the first connecting position and is fixedly connected to the upper part of the fixed sleeve, and part of the rod body is sleeved in the sliding sleeve;

the fastener penetrates through the outer wall of the fixed sleeve and is fixedly connected with the sliding sleeve.