CN111284725A

CN111284725A - Towing wheel for skid type helicopter

Info

Publication number: CN111284725A
Application number: CN202010113965.7A
Authority: CN
Inventors: 黄福军; 谢天华; 田刚印
Original assignee: Shenzhen Lianhe Airplane Technology Co ltd
Current assignee: Shenzhen Lianhe Airplane Technology Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-06-16

Abstract

The embodiment of the invention provides a towing wheel for a skid type helicopter, wherein one end of a main wheel frame of the towing wheel is fixedly arranged on a connecting shaft, and the other end of the main wheel frame of the towing wheel is fixedly arranged at a first preset position of a handle; two ends of the connecting shaft are respectively connected with a wheel; one end of each handle is fixedly provided with a first mechanical claw through an adapter, and a second mechanical claw is fixedly connected to a second preset position of the other end of the adjacent handle through a mounting component; the open end of the first mechanical claw is used for grabbing the undercarriage, the first mechanical claw is provided with a first locking piece, and the first locking piece is in a locked state under the condition that the first mechanical claw grabs the undercarriage; the open end of second gripper is used for grasping the undercarriage, and the second gripper is equipped with the second retaining member, reaches at the second gripper and grasps under the condition of undercarriage, the second retaining member is in the lock state. By applying the scheme of the embodiment, the reliability can be improved on the basis of ensuring that the structural strength of the landing gear is not damaged.

Description

Towing wheel for skid type helicopter

Technical Field

The invention relates to the technical field of airplanes, in particular to a towing wheel for a skid type helicopter.

Background

With the continuous expansion of the market of skid type helicopters, the number of the skid type helicopters is increased rapidly, the guarantee of the helicopters in all aspects is continuously strengthened, and especially, the towing wheels which must be used by the light skid type helicopters are indispensable.

At present, a tug wheel of a skid-type helicopter in the prior art comprises two wheels, a connecting shaft, a handle and a hook; wherein, the wheel is all installed at the both ends of connecting axle, and a tip of handle is equipped with and is used for the draw-in groove, and the handle is at the distance the nearer position department fixed mounting of draw-in groove is on the connecting axle, still installs the couple on the other end of handle. However, when the towing wheel is actually operated, holes need to be drilled in the gravity center position of a skid type undercarriage of the helicopter, a clamping mechanism matched with the clamping groove is installed through the drilled holes, the clamping mechanism is used as a key point, the position of the connecting shaft is used as a fulcrum, the clamping mechanism is matched with the clamping groove, and the handle and the undercarriage are hooked by using the hook when the helicopter is completely placed on the handle by utilizing the lever principle, so that the consignment of the helicopter is completed.

It is thus obvious that when using prior art's dragger wheel, punch on the undercarriage, destroyed the structural strength of undercarriage, moreover, when the shipment helicopter under rugged road conditions, the couple drops easily, and then causes the helicopter to fall from dragging the wheel, and it is thus visible, the reliability of prior art dragger wheel is poor.

Disclosure of Invention

The invention aims to provide a tug wheel for a skid type helicopter, which can improve the reliability on the basis of not damaging the structural strength of an undercarriage.

In a first aspect, an embodiment of the present invention provides a tugger wheel for a skid steer helicopter, comprising: the device comprises a main wheel frame, a connecting shaft, a handle, a wheel, a mounting assembly, a first mechanical claw and a second mechanical claw;

one end of the main wheel frame is fixedly arranged on the connecting shaft, and the other end of the main wheel frame is fixedly arranged at a first preset position of the handle;

two ends of the connecting shaft are respectively connected with a wheel;

the first mechanical claw is fixedly installed at one end of the handle, and the second mechanical claw is fixedly connected to a second preset position adjacent to the other end of the handle through an installation assembly;

the open end of the first mechanical claw is used for grabbing the undercarriage, the first mechanical claw is provided with a first locking piece, and the first locking piece is in a locked state under the condition that the first mechanical claw completely wraps the undercarriage; the first locking member is in an open state in the event that the first mechanical jaw does not fully wrap the landing gear;

the open end of the second mechanical claw is used for grabbing the undercarriage, the second mechanical claw is provided with a second locking piece, and the second locking piece is in a locked state under the condition that the open end of the second mechanical claw is wrapped on the undercarriage; and under the condition that the open end of the second mechanical claw is not wrapped on the landing gear, the second locking piece is in an open state.

In one embodiment of the invention, the main wheel frame comprises a plate and a pair of ear plates, wherein the plate surface of the plate is provided with a through hole for fixing the handle, and the plate surface of the ear plate is provided with a through hole for fixing the connecting shaft;

the opposite side surfaces of the plate are fixedly connected with the end part of one ear plate respectively;

and each lug plate is hinged and installed on the connecting shaft through a through hole of the lug plate.

In one embodiment of the invention, the tractor wheel further comprises an adapter, the adapter is of a U-shaped plate structure, and the bottom of the adapter is provided with a mounting hole for connecting the handle;

one end of the handle is fixedly connected with the first mechanical claw through the mounting hole of the adapter.

In one embodiment of the invention, the mounting assembly comprises a hoop and a base, mounting holes are formed in two ends of the hoop, the base comprises a connecting block and an arc-shaped block used for supporting and embracing the handle, the connecting block is fixedly mounted on the opposite surfaces of the concave arc-shaped surfaces in the arc-shaped block, mounting holes matched with the mounting holes of the hoop are formed in two ends of the arc-shaped block, and the connecting block is further provided with mounting holes which are parallel to the arc-shaped surfaces and used for connecting a second mechanical claw;

the hoop and the arc-shaped block are arranged at the second preset position, the hoop and the concave arc-shaped surface in the arc-shaped block are matched and pass through the mounting hole of the hoop and the mounting hole of the arc-shaped block to fixedly wrap the handle, and the base is fixedly connected with the second mechanical claw through the through hole of the connecting block.

In one embodiment of the present invention, the first gripper comprises: the device comprises a first locking piece, a first arc-shaped plate, a second arc-shaped plate, a first X-shaped mechanical claw, a second X-shaped mechanical claw, a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece;

the first locking piece is a strip-shaped plate, and a locking notch is formed in a third preset position of the side face of the long edge of the first locking piece; a first connecting hole is formed in the end part far away from the locking notch;

the first arc-shaped plate and the second arc-shaped plate are used for wrapping the landing gear;

the first X-shaped gripper comprises: the first strip-shaped plate, the second strip-shaped plate, the third strip-shaped plate and the fourth strip-shaped plate;

the first strip-shaped plate and the second strip-shaped plate are identical in structure, and the third strip-shaped plate and the fourth strip-shaped plate are identical in structure;

an arc-shaped notch is formed in the end portion of one side face of the first strip-shaped plate, the fourth preset position of the first strip-shaped plate is provided with a second connecting hole, and the end portion, far away from the arc-shaped notch, of the first strip-shaped plate is provided with a third connecting hole;

a kneading piece is arranged at one end part of the third strip-shaped plate, a fourth connecting hole is formed in a fifth preset position of the third strip-shaped plate, and a fifth connecting hole is formed in the end part, far away from the kneading piece, of the third strip-shaped plate;

the second X-gripper comprises: the first strip-shaped plate, the second strip-shaped plate, the fifth strip-shaped plate and the sixth strip-shaped plate;

the fifth strip-shaped plate and the sixth strip-shaped plate are identical in structure, and a sixth connecting hole and a seventh connecting hole are formed in two ends of the fifth strip-shaped plate respectively;

the first strip-shaped plate of the first X-shaped mechanical claw is placed on the second strip-shaped plate of the first X-shaped mechanical claw in a concentric mode that the arc-shaped notch is opposite to the second connecting hole in an overlapping mode; the first strip-shaped plate of the first X-shaped mechanical claw is placed on the third strip-shaped plate, and a third connecting hole of the first strip-shaped plate is overlapped and concentric with a fourth connecting hole of the third strip-shaped plate; the second strip-shaped plate of the first X-shaped mechanical claw is placed on the fourth strip-shaped plate, and the third connecting hole of the second strip-shaped plate of the first X-shaped mechanical claw is overlapped and concentric with the fourth connecting hole of the fourth strip-shaped plate; the third strip-shaped plate is placed on the fourth strip-shaped plate in a manner that the kneading pieces are opposite and the fifth connecting holes are overlapped and concentric;

the first strip-shaped plate of the second X-shaped mechanical claw is placed on the second strip-shaped plate of the second X-shaped mechanical claw in a manner that the arc-shaped notches are opposite and the second connecting holes are overlapped and concentric; the first strip-shaped plate of the second X-shaped mechanical claw is placed on the fifth strip-shaped plate, and the third connecting hole of the first strip-shaped plate of the second X-shaped mechanical claw is overlapped and concentric with the sixth connecting hole of the fifth strip-shaped plate; the second strip-shaped plate of the second X-shaped mechanical claw is placed on the sixth strip-shaped plate, and a third connecting hole of the second strip-shaped plate of the second X-shaped mechanical claw is overlapped and concentric with a sixth connecting hole of the sixth strip-shaped plate; the fifth strip-shaped plate is placed on the sixth strip-shaped plate in a manner that a seventh connecting hole of the fifth strip-shaped plate is overlapped and concentric with a seventh connecting hole of the sixth strip-shaped plate;

the convex surface of the first arc-shaped plate is installed on the arc-shaped notch of the first strip-shaped plate in the first X-shaped mechanical claw and the arc-shaped notch of the first strip-shaped plate in the second X-shaped mechanical claw in a matched mode, the convex surface of the second arc-shaped plate is installed on the arc-shaped notch of the second strip-shaped plate in the first X-shaped mechanical claw and the arc-shaped notch of the second strip-shaped plate in the second X-shaped mechanical claw in a matched mode, the first X-shaped mechanical claw and the second X-shaped mechanical claw are separated by a preset distance, and the first connecting piece penetrates through the second connecting hole of the first X-shaped mechanical claw and the second connecting hole of the second X-shaped mechanical claw and is installed; the second connecting piece penetrates through and is installed in a third connecting hole of a first strip-shaped plate in the first X-shaped mechanical claw and a fourth connecting hole of a third strip-shaped plate respectively, and the third connecting piece penetrates through and is installed in a third connecting hole of the first strip-shaped plate in the second X-shaped mechanical claw and a sixth connecting hole of the fifth strip-shaped plate respectively; the fourth connecting piece penetrates through a third connecting hole of a second strip-shaped plate in the first X-shaped mechanical claw and a fourth connecting hole of the fourth strip-shaped plate respectively and is installed; the fifth connecting piece penetrates through a third connecting hole of a second strip-shaped plate in the second X-shaped mechanical claw and a sixth connecting hole of a sixth strip-shaped plate respectively and is installed; the sixth connecting piece penetrates through and is installed on the fifth connecting hole of the third strip-shaped plate, the fifth connecting hole of the fourth strip-shaped plate, the seventh connecting hole of the fifth strip-shaped plate and the seventh connecting hole of the sixth strip-shaped plate;

the first locking piece is installed on a second connecting piece which is connected with the first X-shaped mechanical claw and the second X-shaped mechanical claw through a first connecting hole of the first locking piece, wherein when the distance between the kneading piece of the third strip-shaped plate and the kneading piece of the fourth strip-shaped plate is reduced, the distance between the first arc-shaped plate and the second arc-shaped plate is increased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate and the second arc-shaped plate in a matched mode, the locking groove of the first locking plate is clamped on the fourth connecting piece, so that the undercarriage is wrapped by the first arc-shaped plate and the second arc-shaped plate in a matched mode to achieve a stable state.

In an embodiment of the present invention, the kneading member is an L-shaped plate structure, and a horizontal plane surface of the L-shaped plate structure is coplanar with a plane surface of the third strip-shaped plate;

the third strip-shaped plate is arranged on the fourth strip-shaped plate in a manner that the vertical plate in the L-shaped plate-shaped structure is far away from and opposite to the vertical plate, and the fifth connecting holes are overlapped and concentric;

the L-shaped plate of the third strip-shaped plate is vertically arranged on the L-shaped plate of the third strip-shaped plate, the L-shaped plate of the fourth strip-shaped plate is vertically arranged on the L-shaped plate of the third strip-shaped plate, the L-shaped plate of the third strip-shaped plate is vertically arranged on the L-shaped plate of the fourth strip-shaped plate, the distance between the first arc-shaped plate and the second arc-shaped plate is increased, the first arc-shaped plate is matched with the second arc-shaped plate to wrap the undercarriage, the locking groove of the first locking plate is clamped on the third connecting piece, and therefore the undercarriage reaches a stable state.

In an embodiment of the invention, the first strip-shaped plate is a strip-shaped plate with a length direction and an arc-shaped side surface, wherein an arc-shaped notch is formed in an end part of the side surface of the concave surface in the first strip-shaped plate.

In one embodiment of the present invention, the second gripper includes: the adjusting part, the second locking part, the two second X-shaped mechanical claws, the first arc-shaped plate, the second arc-shaped plate, the first connecting part, the second connecting part, the third connecting part, the fourth connecting part, the fifth connecting part and the sixth connecting part are arranged on the base;

an eighth connecting hole is formed in the plate surface of one end of the adjusting piece;

the second locking member is identical in structure to the first locking member;

the convex surface of the first arc-shaped plate is installed on the arc-shaped notch of the first strip-shaped plate of the two second X-shaped mechanical claws in a matched mode, the convex surface of the second arc-shaped plate is installed on the arc-shaped notch of the second strip-shaped plate of the two second X-shaped mechanical claws in a matched mode, and the two second X-shaped mechanical claws are away from each other by a preset distance; the first connecting piece penetrates through the second connecting holes of the second X-shaped mechanical claws and the eighth connecting hole and is installed, the second connecting piece penetrates through the third connecting hole of the first strip plate in the second X-shaped mechanical claw and the sixth connecting hole of the fifth strip plate and is installed, the third connecting piece penetrates through the third connecting hole of the first strip plate in the second X-shaped mechanical claw and the sixth connecting hole of the fifth strip plate and is installed, the fourth connecting piece penetrates through the third connecting hole of the second strip plate in the second X-shaped mechanical claw and the sixth connecting hole of the sixth strip plate and is installed, the fifth connecting piece penetrates through the third connecting hole of the second strip plate in the second X-shaped mechanical claw and the sixth connecting hole of the sixth strip plate and is installed, and the sixth connecting piece penetrates through the seventh connecting hole of the fifth strip plate and the seventh connecting hole of the sixth strip plate in the two X-shaped mechanical claws Mounting the holes;

the second retaining member passes through the first connecting hole of second retaining member is installed on the second connecting piece, wherein, rotating under the condition of regulating part, first arc with distance grow or diminish between the second arc, just first arc with second arc cooperation parcel under the condition of undercarriage, the locking groove card of second locking board is in on the fourth connecting piece, make first arc with second arc cooperation parcel the undercarriage reaches steady state.

In one embodiment of the invention, the adjusting piece is provided with a handle for rotation.

In one embodiment of the invention, the end of the handle is provided with an anti-slip sleeve.

The invention provides a towing wheel for a skid-type helicopter, wherein one end of a main wheel frame of the towing wheel is fixedly arranged on a connecting shaft, and the other end of the main wheel frame of the towing wheel is fixedly arranged at a first preset position of a handle; two ends of the connecting shaft are respectively connected with a wheel; one end of each handle is fixedly provided with a first mechanical claw through an adapter, and a second mechanical claw is fixedly connected to a second preset position of the other end of the adjacent handle through a mounting component; the open end of the first mechanical claw is used for grabbing the undercarriage, the first mechanical claw is provided with a first locking piece, and the first locking piece is in a locked state under the condition that the first mechanical claw grabs the undercarriage; the first locking member is in an open state in the case that the first gripper has not reached the grip on the undercarriage; the open end of the second mechanical claw is used for grabbing the undercarriage, the second mechanical claw is provided with a second locking piece, and the second locking piece is in a locked state under the condition that the second mechanical claw grabs the undercarriage; and under the condition that the second mechanical claw does not reach to grasp the undercarriage, the second locking piece is in an opening state. Compared with the prior art, the tractor wheel provided by the embodiment of the invention has the advantages that holes do not need to be drilled on the undercarriage, a hook does not need to be used, the position of the undercarriage grabbed by the first mechanical claw is taken as a key point, the first preset position is taken as a fulcrum, the lever principle is utilized, the landing frame is firmly locked by the second mechanical claw and the first locking piece and the second locking piece, and therefore the helicopter is difficult to fall off and visible when the helicopter is transported under the rugged road condition, and the reliability can be improved on the basis of ensuring that the structural strength of the undercarriage is not damaged by applying the scheme of the embodiment. Of course, it is not necessary for any product or method of practicing the invention to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tug wheel for a skid-type helicopter according to an embodiment of the present invention;

FIG. 2 is a schematic partial structural view of a tugger wheel for a skid-mounted helicopter provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a main wheel frame according to an embodiment of the present invention;

FIG. 4 is a schematic front view of a first gripper of the tug wheel provided by an embodiment of the invention;

fig. 5 is a schematic structural diagram of a first gripper in the tractor wheel according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first gripper and a second gripper in the tractor wheel according to the embodiment of the present invention.

FIG. 7 is a schematic structural view of a second gripper at a first angle in the tug wheel provided by an embodiment of the invention;

fig. 8 is a schematic structural diagram of a second gripper at a second angle in the tug wheel provided by the embodiment of the invention.

Wherein, 1-a main wheel frame, 2-a connecting shaft, 3-a handle, 4-a wheel, 5-a mounting component, 6-a first mechanical claw, 7-a second mechanical claw, 1-a plate, 1-a ear plate, 1-2, 5-a hoop, 5-a 2-a base, 6-1-a first locking piece, 6-2-a first arc plate, 6-3-a second arc plate, 6-4-a first X-shaped mechanical claw, 6-5-a second X-shaped mechanical claw, 6-6-a first connecting piece, 6-7-a second connecting piece, 6-8-a third connecting piece, 6-9-a fourth connecting piece, 6-10-a fifth connecting piece, 6-11-a sixth connecting piece, 7-1-second locking piece, 7-2-adjusting piece, 5-2-1-connecting block and 5-2-2-arc block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in detail below with reference to specific examples.

On the one hand, referring to fig. 1 and fig. 2, fig. 1 to 2 are schematic structural views of a tug wheel for a skid-type helicopter according to an embodiment of the present invention, including: the device comprises a main wheel frame 1, a connecting shaft 2, a handle 3, a wheel 4, a mounting component 5, a first mechanical claw 6 and a second mechanical claw 7;

one end of the main wheel frame 1 is fixedly arranged on the connecting shaft 2, and the other end of the main wheel frame 1 is fixedly arranged at a first preset position of the handle 3;

two ends of the connecting shaft 2 are respectively connected with a wheel 4;

the first mechanical claw 6 is fixedly arranged at one end of the handle 3, and the second mechanical claw 7 is fixedly connected to a second preset position adjacent to the other end of the handle 3 through a mounting component 5;

the open end of the first mechanical claw 6 is used for grabbing the undercarriage, the first mechanical claw 6 is provided with a first locking piece 6-1, and the first locking piece 6-1 is in a locked state under the condition that the first mechanical claw 6 completely wraps the undercarriage; in the case where the first mechanical jaw 6 does not reach a complete wrapping of the landing gear, the first locking member 6-1 is in the open condition;

the open end of the second mechanical claw 7 is used for grabbing the undercarriage, the second mechanical claw 7 is provided with a second locking part 7-1, and the second locking part 7-1 is in a locking state under the condition that the open end of the second mechanical claw 7 wraps the undercarriage; and under the condition that the open end of the second mechanical claw 7 does not wrap the landing gear, the second locking member 7-1 is in an open state.

The selection of the first preset position in the handle 3 is related to the actual application scene, namely, the selection of the first preset position is related to the weight and the volume of the skid type helicopter, the models of the skid type helicopters which are carried by the tractor wheel in the embodiment are different, and the first preset position is also different.

The selection of the wheels 4 is also related to the actual application scene, when the helicopter is transported on a road with simple road conditions, the wheels 4 can adopt the wheels 4 with pneumatic tires so as to achieve the aim of shock absorption; when the helicopter is transported on a road with complex road conditions, the wheels 4 can adopt the wheels 4 with solid tires, so that the reliability can be improved on the basis of shock absorption.

In addition, the first gripper 6 may be directly fixedly mounted at one end of the handle 3, or the first gripper 6 may be fixedly mounted at one end of the handle 3 through an adaptor, which is not limited in the embodiment of the present invention.

The second predetermined position on the handle 3 is selected on the handle 3 such that the helicopter on the tug wheel can reach a position of stable equilibrium in cooperation with the first gripper 6 and the second gripper 7.

The tractor wheel in this embodiment is based on the lever principle to accomplish the operation task, and the position department that above-mentioned first gripper 6 grabbed the undercarriage is as the focus, and first position department is the fulcrum, and the other end that is close to second gripper 7 in handle 3 is the force point, that is, handle 3 is as the power arm, and when the force point that can press handle 3 down through the manpower was parallel with ground, another second gripper 7 can hold the undercarriage tightly.

The material of the handle 3 can adopt titanium alloy material.

The open end of the first gripper 6 is a means for picking up the drop frame.

In view of the above, the second gripper 7 may have the same structure as the first gripper 6 or a different structure from the first gripper, and the present invention is not limited to this.

Each trailing wheel can only lift one undercarriage, for a skid helicopter, two trailing wheels are needed, and the working principle of each trailing wheel is as follows: as shown in fig. 1-2, the first mechanical claw 6 is triggered to enable the open end of the first mechanical claw 6 to catch the undercarriage, when the first mechanical claw 6 catches and picks up the undercarriage until the open end of the first mechanical claw 6 completely wraps the undercarriage, the first locking piece 6-1 is triggered, and the first locking piece 6-1 is just locked, so that the first mechanical claw 6 can firmly lock the undercarriage; when the open end of the first gripper 6 does not grip the landing gear or does not completely wrap the landing gear, the first locking member 6-1 is always in the open position. When the first gripper 6 is firmly gripping the landing gear, and the first locking member 6-1 is in the locked state, the other end of the handle 3 is pressed downwards, at this moment, the position of the undercarriage grasped by the first gripper 6 is taken as a key point, the first position of the tractor wheel is taken as a fulcrum, the other end of the handle 3 is taken as a force point, until the second gripper 7 grasps the undercarriage, and when the second gripper 7 grabs and picks up the landing gear until the open end of the second gripper 7 completely wraps the landing gear, the second locking piece 7-1 is triggered, the second locking piece 7-1 is just locked, so that the second mechanical claw 7 can firmly lock the landing gear, the landing gear is firmly grabbed and supported by the trailer wheel, and when the open end of the second gripper 7 does not grip the landing gear or does not completely wrap the landing gear, the second locking member 7-1 is always in the open state.

When the first mechanical claw 6 grabs the undercarriage, the controller can control the first mechanical claw 6 to automatically grab the undercarriage, or the controller can manually operate the first mechanical claw 6 to grab the undercarriage. Similarly, when the second gripper 7 grabs the undercarriage, the second gripper 7 may be controlled by the controller to automatically complete the grabbing of the undercarriage, or the second gripper 7 may be manually operated to complete the grabbing of the undercarriage. However, the embodiment of the present invention is not limited thereto.

The first locking member 6-1 can be controlled by a controller to complete locking or unlocking, can be manually locked or unlocked, and can be locked or unlocked by itself. However, the embodiment of the present invention is not limited thereto.

Therefore, one end of the main wheel frame 1 of the tractor wheel provided by the embodiment of the invention is fixedly arranged on the connecting shaft 2, and the other end of the main wheel frame is fixedly arranged at a first preset position of the handle 3; two ends of the connecting shaft 2 are respectively connected with a wheel 4; one end of the handle 3 is fixedly provided with a first mechanical claw 6 through an adapter, and a second mechanical claw 7 is fixedly connected to a second preset position of the other end of the adjacent handle 3 through a mounting component 5; the open end of the first mechanical claw 6 is used for grasping the undercarriage, the first mechanical claw 6 is provided with a first locking piece 6-1, and the first locking piece 6-1 is in a locked state under the condition that the first mechanical claw 6 completely wraps the undercarriage; in the case where the first mechanical jaw 6 does not reach a complete wrapping of the undercarriage, the first locking member 6-1 is in the open condition; the open end of the second mechanical claw 7 is used for grabbing the undercarriage, the second mechanical claw 7 is provided with a second locking part 7-1, and the second locking part 7-1 is in a locking state under the condition that the open end of the second mechanical claw 7 is wrapped on the undercarriage; in the case where the open end of the second gripper 7 has not reached the point of wrapping the landing gear, the second locking member 7-1 is in the open position. Compared with the prior art, the tractor wheel provided by the embodiment of the invention has the advantages that holes do not need to be drilled on the undercarriage, a hook does not need to be used, the position of the undercarriage grabbed by the first mechanical claw 6 is taken as a key point, the first preset position is taken as a fulcrum, the landing frame is firmly locked by the second mechanical claw 7 and the first locking piece 6-1 and the second locking piece 7-1 by utilizing the lever principle, so that the helicopter is difficult to fall off when the helicopter is transported under a rugged road condition, and therefore, the reliability can be improved by applying the scheme provided by the embodiment of the invention, and meanwhile, the tractor wheel can be fixed with the undercarriage at any position, so that the tractor wheel is simple in structure and low in price.

In an embodiment of the present invention, as shown in fig. 3, the main wheel frame 1 may include a plate 1-1 and an ear plate 1-2, wherein a plate surface of the plate 1-1 is provided with a through hole for fixing the handle 3, and a plate surface of the ear plate 1-2 is provided with a through hole for fixing the connecting shaft 2;

the opposite side surfaces of the plate 1-1 are fixedly connected with the end part of one ear plate 1-2;

each ear plate 1-2 is hinged on the connecting shaft 2 through a through hole of the ear plate 1-2.

Wherein, in order to fix the handle 3, a plurality of pairs of through holes can be arranged on the plate surface of the plate 1-1.

The anchor ear 5-1 can be used, through holes are arranged at both ends of the anchor ear 5-1, and the handle 3 can be fixedly arranged on the plate 1-1 by means of the matching installation of the through holes of the anchor ear 5-1 and the through holes of the plate 1-1 by screws or bolts.

In addition, the through hole on the plate surface may be a through hole provided with an internal thread, or may also be a through hole not provided with an internal thread, which is not limited in this embodiment.

The opposite side surfaces of the plate 1-1 are fixedly connected with the end part of one ear plate 1-2 respectively, and can be understood as follows: the side surface of the plate 1-1, which is provided with the ear plates 1-2, is a pair of opposite side surfaces, namely, the ear plates 1-2 are oppositely arranged, and meanwhile, the ear plates 1-2 are fixedly connected to the opposite side surfaces of the plate 1-1; the connection between the ear plate 1-2 and the side surface of the plate 1-1 may be welding, or may be through a connecting member, or may be integrally cast, which is not limited in this embodiment.

Each ear plate 1-2 is hinged on the upper connecting shaft 2 through a through hole of the ear plate 1-2, and it can be understood that the connecting shaft 2 can independently rotate relative to the ear plates 1-2, that is, the rotation of the connecting shaft 2 does not affect the ear plates 1-2.

As can be seen, the plate surface of the plate 1-1 of the main wheel frame 1 of the present embodiment is provided with a through hole for fixing the handle 3, and the plate surface of the ear plate 1-2 is provided with a through hole for fixing the connecting shaft 2; the opposite side surfaces of the plate 1-1 are fixedly connected with the end parts of the ear plates 1-2 respectively; each ear plate 1-2 is hinged on the connecting shaft 2 through a through hole of the ear plate 1-2. It can be seen that the main wheel frame 1 of the embodiment has a simple and practical structure, and meanwhile, the reliability of the main wheel frame 1 supporting the undercarriage can be enhanced by the through holes arranged on the ear plates 1-2.

When one end of the handle 3 fixes the first gripper 6 through the adaptor, in an embodiment of the present invention, the trailer wheel may further include an adaptor, wherein the adaptor is a U-shaped plate structure, and a mounting hole for connecting the handle 3 is formed at the bottom of the adaptor;

one end of the handle 3 is fixedly connected with the first mechanical claw 6 through the mounting hole of the adapter.

Wherein, handle 3 reaches the mode of linking firmly through connecting piece and first gripper 6, includes following two kinds of modes at least:

the first implementation mode is characterized in that the relative positions of the two end plate surfaces of the adapter are respectively provided with a mounting hole, the adapter and the end of the handle 3 can be fixed by the aid of the mounting holes formed in the bottoms of the adapters through screws, and the adapter and the first mechanical claw 6 are fixed through the mounting holes in the plate surfaces of the adapter, so that the first mechanical claw 6 is fixedly connected to one end of the handle 3.

The second kind of implementation, the relative position department of the both ends face of adaptor respectively is equipped with a threaded rod, can utilize the mounting hole that the screw runs through the adaptor bottom with 3 end fixing of adaptor and handle, through the threaded rod and the cooperation of the mounted position department of first gripper 6, it is fixed with first gripper 6 with the adaptor to reach the one end of 6 rigid couplings of first gripper at handle 3.

It can be seen that the tractor wheel of this embodiment can also include the adaptor, and the bottom of adaptor is equipped with the mounting hole that is used for connecting handle 3, and the mounting hole that just handle 3's one end passes through the adaptor links firmly with first gripper 6. It can be seen that the adaptor of this embodiment, not only simple structure, still be convenient for handle 3 and first gripper 6 dismantlement and replacement to make the tractor wheel be convenient for maintain, further can reduce cost of maintenance.

In an embodiment of the present invention, as shown in fig. 7, the mounting assembly 5 may include an anchor ear 5-1 and a base 5-2, two ends of the anchor ear 5-1 are both provided with a mounting hole, the base 5-2 includes a connecting block 5-2-1 and an arc block 5-2-2 for supporting and embracing the handle 3, the connecting block 5-2-1 is fixedly mounted on opposite sides of a concave arc surface in the arc block 5-2-2, two ends of the arc block 5-2-2 are both provided with a mounting hole matched with the mounting hole of the anchor ear 5-1, and the connecting block 5-2-1 is further provided with a parallel arc surface and a mounting hole for connecting a second gripper 7;

the hoop 5-1 and the arc-shaped block 5-2-2 are both arranged at the second preset position, the hoop 5-1 is matched with the concave arc-shaped surface of the arc-shaped block 5-2-2 and fixedly wraps the handle 3 through the mounting hole of the hoop 5-1 and the mounting hole of the arc-shaped block 5-2-2, and the base 5-2 is fixedly connected with the second mechanical claw 7 through the through hole of the connecting block 5-2-1.

The base 5-2 can be an integrated independent structure made of the connecting block 5-2-1 and the arc-shaped block 5-2-2 or a structure formed by two independent structures of the connecting block 5-2-1 and the arc-shaped block 5-2-2. When the connecting block 5-2-1 and the arc-shaped block 5-2-2 are in two independent structures, the formed base 5-2 is convenient to maintain and disassemble, and when the connecting block 5-2-1 and the arc-shaped block 5-2-2 are combined into an independent structure, the formed base 5-2 is strong in firmness.

The handle 3 is wrapped by the concave arc-shaped surfaces of the anchor ear 5-1 and the arc-shaped blocks 5-2-2, and can penetrate through the mounting holes of the anchor ear 5-1 and the mounting holes of the arc-shaped blocks 5-2-2 by using stud bolts and then is fastened by using nuts, so that the handle 3 is firmly fixed in the anchor ear 5-1 and the arc-shaped blocks 5-2-2.

It can be seen that the arc-shaped blocks 5-2-2 of the hoop 5-1 of the mounting assembly 5 and the base 5-2 of the mounting assembly 5 of this embodiment are all disposed at the second preset position, the hoop 5-1 is matched with the concave arc-shaped surface of the arc-shaped blocks 5-2-2 and fixedly wraps the handle 3 with the mounting holes of the arc-shaped blocks 5-2-2 through the mounting holes of the hoop 5-1, and the base 5-2 is fixedly connected with the second gripper 7 through the through hole of the connecting block 5-2-1 of the base of the mounting assembly 5. The hoop 5-1 and the base are arranged in the embodiment, the handle 3 can be firmly fixed at the second preset position, and meanwhile, the base 5-2 and the second mechanical claw 7 can be fixedly connected through the connecting block 5-2-1, so that the effect of stabilizing the second mechanical claw 7 is achieved.

In one embodiment of the present invention, as shown in fig. 2, 4, 6 and 8, the first gripper 6 may include: the first gripper 6 comprises: the device comprises a first locking piece 6-1, a first arc-shaped plate 6-2, a second arc-shaped plate 6-3, a first X-shaped mechanical claw 6-4, a second X-shaped mechanical claw 6-5, a first connecting piece 6-6, a second connecting piece 6-7, a third connecting piece 6-8, a fourth connecting piece 6-9, a fifth connecting piece 6-10 and a sixth connecting piece 6-11;

the first locking piece 6-1 is a strip-shaped plate, and a locking notch is formed in a third preset position of the side surface of the long edge of the first locking piece 6-1; a first connecting hole is formed in the end part far away from the locking notch;

the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 are used for wrapping the landing gear;

the first X-shaped gripper 6-4 comprises: the first strip-shaped plate, the second strip-shaped plate, the third strip-shaped plate and the fourth strip-shaped plate;

the second X-shaped gripper 6-5 comprises: the first strip-shaped plate, the second strip-shaped plate, the fifth strip-shaped plate and the sixth strip-shaped plate;

the first strip-shaped plate of the first X-shaped mechanical claw 6-4 is placed on the second strip-shaped plate of the first X-shaped mechanical claw 6-4 in a manner that the arc-shaped notches are opposite and the second connecting holes are overlapped and concentric; the first strip-shaped plate of the first X-shaped mechanical claw 6-4 is placed on the third strip-shaped plate, and a third connecting hole of the first strip-shaped plate and a fourth connecting hole of the third strip-shaped plate are overlapped and concentric; the second strip-shaped plate of the first X-shaped mechanical claw 6-4 is placed on the fourth strip-shaped plate, and a third connecting hole of the second strip-shaped plate of the first X-shaped mechanical claw 6-4 is overlapped and concentric with a fourth connecting hole of the fourth strip-shaped plate; the third strip-shaped plate is placed on the fourth strip-shaped plate in a manner that the kneading pieces are opposite and the fifth connecting holes are overlapped and concentric;

the first strip-shaped plate of the second X-shaped mechanical claw 6-5 is placed on the second strip-shaped plate of the second X-shaped mechanical claw 6-5 in a manner that the arc-shaped notches are opposite and the second connecting holes are overlapped and concentric; the first strip-shaped plate of the second X-shaped mechanical claw 6-5 is placed on the fifth strip-shaped plate, and the third connecting hole of the first strip-shaped plate of the second X-shaped mechanical claw 6-5 is overlapped and concentric with the sixth connecting hole of the fifth strip-shaped plate; the second strip-shaped plate of the second X-shaped mechanical claw 6-5 is placed on the sixth strip-shaped plate, and the third connecting hole of the second strip-shaped plate of the second X-shaped mechanical claw 6-5 is overlapped and concentric with the sixth connecting hole of the sixth strip-shaped plate; the fifth strip-shaped plate is placed on the sixth strip-shaped plate in a manner that a seventh connecting hole of the fifth strip-shaped plate is overlapped and concentric with a seventh connecting hole of the sixth strip-shaped plate;

the convex surface of the first arc-shaped plate 6-2 is installed on the arc-shaped notch of the first strip-shaped plate in the first X-shaped mechanical claw 6-4 and the arc-shaped notch of the first strip-shaped plate in the second X-shaped mechanical claw 6-5 in a matching manner, the convex surface of the second arc-shaped plate 6-3 is installed on the arc-shaped notch of the second strip-shaped plate in the first X-shaped mechanical claw 6-4 and the arc-shaped notch of the second strip-shaped plate in the second X-shaped mechanical claw 6-5 in a matching manner, the first X-shaped mechanical claw 6-4 and the second X-shaped mechanical claw 6-5 are separated by a preset distance, and the first connecting piece 6-6 penetrates through the second connecting hole of the first X-shaped mechanical claw 6-4 and the second connecting hole of the second X-shaped mechanical claw 6-5 and is installed; the second connecting pieces 6-7 respectively penetrate through and are installed in third connecting holes of a first strip-shaped plate in the first X-shaped mechanical claw 6-4 and fourth connecting holes of a third strip-shaped plate, and the third connecting pieces 6-8 respectively penetrate through and are installed in third connecting holes of a first strip-shaped plate in the second X-shaped mechanical claw 6-5 and sixth connecting holes of a fifth strip-shaped plate; the fourth connecting pieces 6-9 respectively penetrate through and are installed in a third connecting hole of a second strip-shaped plate and a fourth connecting hole of a fourth strip-shaped plate in the first X-shaped mechanical claw 6-4; the fifth connecting pieces 6-10 respectively penetrate through and are installed in third connecting holes of a second strip-shaped plate and sixth connecting holes of a sixth strip-shaped plate in the second X-shaped mechanical claws 6-5; the sixth connecting pieces 6 to 11 penetrate through the fifth connecting holes of the third strip-shaped plates, the fifth connecting holes of the fourth strip-shaped plates, the seventh connecting holes of the fifth strip-shaped plates and the seventh connecting holes of the sixth strip-shaped plates and are installed;

the first locking member 6-1 is mounted on a second link member 6-7 connecting the first X-shaped gripper 6-4 and the second X-shaped gripper 6-5 through a first connection hole of the first locking member 6-1, wherein when the kneading element distance of the third strip-shaped plate and the kneading element distance of the fourth strip-shaped plate becomes smaller, the distance between the first arc 6-2 and the second arc 6-3 becomes larger, and in the case where the first arcuate panel 6-2 and the second arcuate panel 6-3 cooperate to wrap the landing gear, the locking groove of the first locking plate is clamped on the fourth connecting piece 6-9, so that the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 are matched to wrap the undercarriage to achieve a stable state.

Wherein, the arc breach of first strip shaped plate, the arc breach of second strip shaped plate all cooperate the assembly with the convex surface of first arc.

The first strip-shaped plate in the first X-shaped gripper 6-4 is placed on the second strip-shaped plate of the first X-shaped gripper 6-4 in a manner that the arc-shaped notches are opposite and the second connecting hole is overlapped and concentric, and it can be understood that the first strip-shaped plate in the first X-shaped gripper 6-4 is placed on the second strip-shaped plate in a manner that: the arc-shaped gap of the first strip-shaped plate is opposite to the arc-shaped gap of the second strip-shaped plate, and the second connecting hole of the first strip-shaped plate is concentric with and overlapped with the second connecting hole of the second strip-shaped plate.

The third preset position is arranged in relation to the fact that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in the first X-shaped mechanical claw 6-4, namely, when the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in the first X-shaped mechanical claw 6-4, the third preset position is placed on the first connecting piece, and at the moment, the third preset position is a locking notch, so that the locking notch is clamped on the fourth connecting piece to achieve the locking effect.

The fourth preset position is related to the lengths of the first strip-shaped plate and the second strip-shaped plate and the diameter of the handle 3, and the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 can wrap the undercarriage completely and firmly.

The function of the arrangement of the nip is to increase the distance of the first 6-2 and second 6-3 arcs by simultaneously operating the nip on the third strip and the nip on the fourth strip so that the first 6-2 and second 6-3 arcs can grab the landing gear and wrap it.

For the convenience of kneading, the piece of kneading can be the cylinder pole of fixed connection at third strip shaped plate, simultaneously, also can be provided with the ball of being convenient for holding the claw on the cylinder pole, in addition, the piece of kneading can also be the vertical rigid coupling at the strip shaped plate of third strip shaped plate edge etc..

The working principle of the first mechanical claw 6 is as follows: kneading a kneading piece of a third strip-shaped plate and a kneading piece of a fourth strip-shaped plate in the first X-shaped mechanical claw 6-4 at the same time, wherein at the moment, the first connecting piece 6-6, the second connecting piece 6-7, the third connecting piece 6-8, the fourth connecting piece 6-9, the fifth connecting piece 6-10 and the sixth connecting piece 6-11 respectively drive each part in the first X-shaped mechanical claw 6-4 and the second X-shaped mechanical claw 6-5 to achieve synchronous motion, finally the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased, further the kneading piece is controlled to enable the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 to grab the undercarriage, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode, the locking groove of the first locking plate is clamped on the fourth connecting piece 6-9, so that the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 are matched to wrap the landing gear to achieve a stable state.

In this embodiment, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 can be controlled by manually operating the kneading element on the third strip-shaped plate and the kneading element on the fourth strip-shaped plate, or the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 can be controlled by controlling the kneading element on the third strip-shaped plate and the kneading element on the fourth strip-shaped plate by the controller.

In order to facilitate the placement of the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3, in an embodiment of the present invention, the first strip-shaped plate is a strip-shaped plate with a length direction and a side surface in an arc shape, wherein an end portion of the side surface of the concave surface in the first strip-shaped plate is provided with an arc-shaped notch. The arc-shaped notch is used for matching with the convex surface of the first arc-shaped plate 6-2.

As can be seen, the first gripper 6 of the present embodiment comprises: the device comprises a first locking piece 6-1, a first arc-shaped plate 6-2, a second arc-shaped plate 6-3, a first X-shaped mechanical claw 6-4, a second X-shaped mechanical claw 6-5, a first connecting piece 6-6, a second connecting piece 6-7, a third connecting piece 6-8, a fourth connecting piece 6-9, a fifth connecting piece 6-10 and a sixth connecting piece 6-11; and when the distance between the kneading piece of the third strip-shaped plate and the kneading piece of the fourth strip-shaped plate is reduced, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased, and under the condition that the landing gear is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matching mode, the locking groove of the first locking plate is clamped on the fourth connecting piece 6-9, so that the landing gear is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matching mode to achieve a stable state. It can be seen that the first gripper 6 of the present embodiment has a simple structure and is convenient to operate, and meanwhile, the undercarriage can be firmly grasped without damaging the undercarriage.

Based on the above situation, in an embodiment of the present invention, as shown in fig. 5 to 8, the kneading member may also be an L-shaped plate structure, and the horizontal plate surface of the L-shaped plate structure is coplanar with the plate surface of the third strip;

when the distance between the vertical plate of the L-shaped plate-shaped structure of the third strip-shaped plate and the vertical plate of the L-shaped plate-shaped structure of the fourth strip-shaped plate is reduced, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode, the locking groove of the first locking plate is clamped on the third connecting piece 6-8, so that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode to achieve a stable state.

And a fifth connecting hole is formed in the end part, far away from the L-shaped plate-shaped structure, of the third strip-shaped plate.

The vertical plate in the L-shaped plate-shaped structure of the third strip-shaped plate and the vertical plate in the L-shaped plate-shaped structure of the fourth strip-shaped plate are far away from the opposite mode to be placed, kneading by a user can be facilitated, in the kneading process, the horizontal plates of the L-shaped plate-shaped structure are partially overlapped, the vertical plates are closer and closer, meanwhile, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode, the locking groove of the first locking plate is clamped on the third connecting piece 6-8, so that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode to achieve a.

It can be seen that the kneading member of the present embodiment may be an L-shaped plate structure, and the horizontal plate surface of the L-shaped plate structure is coplanar with the plate surface of the third strip-shaped plate; the third strip-shaped plate is placed on the fourth strip-shaped plate in a mode that the vertical plate in the L-shaped plate structure is far away from the opposite side, and the fifth connecting hole is overlapped and concentric, so that the kneading piece of the embodiment is convenient for a user to knead.

In one embodiment of the present invention, as shown in fig. 6 and 8, the second gripper 7 includes: the adjusting part 7-2, the second locking part 7-1, the two second X-shaped mechanical claws 6-5, the first arc-shaped plate 6-2, the second arc-shaped plate 6-3, the first connecting part 6-6, the second connecting part 6-7, the third connecting part 6-8, the fourth connecting part 6-9, the fifth connecting part 6-10 and the sixth connecting part 6-11;

an eighth connecting hole is formed in the plate surface of one end of the adjusting piece 7-2;

the second locking member 7-1 is identical in structure to the first locking member 6-1;

the convex surface of the first arc-shaped plate 6-2 is installed on the arc-shaped notch of the first strip-shaped plate of the two second X-shaped mechanical claws 6-5 in a matched mode, the convex surface of the second arc-shaped plate 6-3 is installed on the arc-shaped notch of the second strip-shaped plate of the two second X-shaped mechanical claws 6-5 in a matched mode, and the two second X-shaped mechanical claws 6-5 are away from each other by a preset distance; the first connecting pieces 6 to 6 are installed by penetrating through the second connecting holes and the eighth connecting holes of the two second X-shaped mechanical claws 6 to 5, the second connecting pieces 6 to 7 are installed by penetrating through the third connecting holes of the first strip-shaped plates and the sixth connecting holes of the fifth strip-shaped plates of one second X-shaped mechanical claw 6 to 5, respectively, the third connecting pieces 6 to 8 are installed by penetrating through the third connecting holes of the first strip-shaped plates and the sixth connecting holes of the fifth strip-shaped plates of the other second X-shaped mechanical claw 6 to 5, respectively, the fourth connecting pieces 6 to 9 are installed by penetrating through the third connecting holes of the second strip-shaped plates and the sixth connecting holes of the sixth strip-shaped plates of one second X-shaped mechanical claw 6 to 5, respectively, and the fifth connecting pieces 6 to 10 are installed by penetrating through the third connecting holes of the second strip-shaped plates and the sixth connecting holes of the sixth strip-shaped plates of the other second X-shaped mechanical claw 6 to 5, respectively A sixth connecting hole is formed in parallel, and a sixth connecting piece 6-11 penetrates through a seventh connecting hole of the fifth strip-shaped plate and a seventh connecting hole of the sixth strip-shaped plate in the two X-shaped mechanical claws and is formed in parallel;

the second locking piece 7-1 is installed on the second connecting piece 6-7 through the first connecting hole of the second locking piece 7-1, wherein under the condition that the adjusting piece 7-2 is rotated, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased or decreased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode, the locking groove of the second locking plate is clamped on the fourth connecting piece 6-9, so that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode to achieve a stable state.

Wherein the second locking member 7-1 is mounted on the second connecting member 6-7 connecting the two second X-shaped mechanical jaws 6-5 through the first connecting hole of the second locking member 7-1.

The rotating adjusting member 7-2 can be realized by controlling the rotating adjusting member 7-2 through a control system, or by manually rotating the adjusting member 7-2, which is not limited in this embodiment.

The adjusting part 7-2 is arranged to drive the second connecting part 6-7 by rotating the adjusting part 7-2, so that the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 driven by the two second X-shaped mechanical claws 6-5 connected to the second connecting part 6-7 is increased, and the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 can grab the landing gear and wrap the landing gear.

When the adjusting member 7-2 of this embodiment is implemented by manual rotation, in order to facilitate rotation, a ball convenient for a person to hold a claw may be disposed on the adjusting member 7-2, and a handle for rotation may be disposed on the adjusting member 7-2, as shown in fig. 6, and for anti-slip, an anti-slip sleeve may be disposed at an end of the handle 3, or an anti-slip sleeve may be disposed on the handle of the adjusting member 7-2.

The working principle of the second mechanical claw 7 is as follows: rotating the adjusting part 7-2, wherein at this time, the first connecting part 6-6, the second connecting part 6-7, the third connecting part 6-8, the fourth connecting part 6-9, the fifth connecting part 6-10 and the sixth connecting part 6-11 respectively drive each part in the two second X-shaped mechanical claws 6-5 to synchronously move, finally the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased, and then the adjusting part 7-2 is controlled to enable the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 to grab the undercarriage, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matching manner, the locking groove of the first locking plate is clamped on the fourth connecting part 6-9, so that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matching manner to achieve stable wrapping Solid state.

As can be seen, the second gripper 7 of the present embodiment comprises: the adjusting part 7-2, the second locking part 7-1, the two second X-shaped mechanical claws 6-5, the first arc-shaped plate 6-2, the second arc-shaped plate 6-3, the first connecting part 6-6, the second connecting part 6-7, the third connecting part 6-8, the fourth connecting part 6-9, the fifth connecting part 6-10 and the sixth connecting part 6-11; and under the condition that the adjusting part 7-2 is rotated, the distance between the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 is increased or decreased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode, the locking groove of the second locking plate is clamped on the fourth connecting part 6-9, so that the undercarriage is wrapped by the first arc-shaped plate 6-2 and the second arc-shaped plate 6-3 in a matched mode to achieve a stable state. It can be seen that the second gripper 7 of the present embodiment has a simple structure and is convenient to operate, and meanwhile, the landing gear can be firmly grasped without damaging the landing gear.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in a device that comprises the element.

The embodiments in the present disclosure are described in a related manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A tugger wheel for a skid-mounted helicopter, comprising: the device comprises a main wheel frame (1), a connecting shaft (2), a handle (3), a wheel (4), a mounting component (5), a first mechanical claw (6) and a second mechanical claw (7);

one end of the main wheel carrier (1) is fixedly arranged on the connecting shaft (2), and the other end of the main wheel carrier (1) is fixedly arranged at a first preset position of the handle (3);

two ends of the connecting shaft (2) are respectively connected with a wheel (4);

one end of the handle (3) is fixedly provided with the first mechanical claw (6), and a second mechanical claw (7) is fixedly connected to a second preset position adjacent to the other end of the handle (3) through a mounting component (5);

the open end of the first mechanical claw (6) is used for grabbing the undercarriage, the first mechanical claw (6) is provided with a first locking piece (6-1), and the first locking piece (6-1) is in a locked state under the condition that the first mechanical claw (6) completely wraps the undercarriage; -in the case where the first mechanical jaw (6) does not reach a complete wrapping of the landing gear, the first locking member (6-1) is in the open condition;

the open end of the second mechanical claw (7) is used for grabbing the undercarriage, a second locking piece (7-1) is arranged on the second mechanical claw (7), and the second locking piece (7-1) is in a locking state under the condition that the open end of the second mechanical claw (7) wraps the undercarriage; and under the condition that the open end of the second mechanical claw (7) does not wrap the landing gear, the second locking piece (7-1) is in an open state.

2. The tug wheel of claim 1, characterized in that said main wheel frame (1) comprises a plate (1-1) and a pair of ear plates (1-2), wherein the plate surface of said plate (1-1) is provided with a through hole for fixing said handle (3), and the plate surface of said ear plates (1-2) is provided with a through hole for fixing said connecting shaft (2);

the opposite side surfaces of the plate (1-1) are fixedly connected with the end part of one ear plate (1-2);

each ear plate (1-2) is hinged and installed on the connecting shaft (2) through a through hole of the ear plate (1-2).

3. The tug wheel of claim 1 further comprising an adapter, wherein the adapter is a U-shaped plate structure and the bottom of the adapter is provided with a mounting hole for connecting the handle (3);

one end of the handle (3) is fixedly connected with the first mechanical claw (6) through the mounting hole of the adapter.

4. A tug wheel according to any of claims 1-3, characterised in that the mounting assembly (5) comprises a hoop (5-1) and a base (5-2), the two ends of the hoop (5-1) are provided with mounting holes, the base (5-2) comprises a connecting block (5-2-1) and an arc block (5-2-2) for supporting and embracing the handle (3), the connecting block (5-2-1) is fixedly arranged on the back surface of the concave arc surface in the arc block (5-2-2), and both ends of the arc-shaped block (5-2-2) are provided with mounting holes matched with the mounting holes of the hoop (5-1), the connecting block (5-2-1) is also provided with a mounting hole which is parallel to the arc-shaped surface and is used for connecting the second mechanical claw (7);

the hoop (5-1) and the arc-shaped block (5-2-2) are arranged at the second preset position, the hoop (5-1) is matched with the concave arc-shaped surface of the arc-shaped block (5-2-2) and fixedly wraps the handle (3) through the mounting hole of the hoop (5-1) and the mounting hole of the arc-shaped block (5-2-2), and the base (5-2) is fixedly connected with the second mechanical claw (7) through the through hole of the connecting block (5-2-1).

5. The dragger wheel according to claim 4, characterized in that said first gripper (6) comprises: the device comprises a first locking piece (6-1), a first arc-shaped plate (6-2), a second arc-shaped plate (6-3), a first X-shaped mechanical claw (6-4), a second X-shaped mechanical claw (6-5), a first connecting piece (6-6), a second connecting piece (6-7), a third connecting piece (6-8), a fourth connecting piece (6-9), a fifth connecting piece (6-10) and a sixth connecting piece (6-11);

the first locking piece (6-1) is a strip-shaped plate, and a locking notch is formed in a third preset position of the side face of the long edge of the first locking piece (6-1); a first connecting hole is formed in the end part far away from the locking notch;

the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) are used for wrapping the landing gear;

the first X-shaped gripper (6-4) comprises: the first strip-shaped plate, the second strip-shaped plate, the third strip-shaped plate and the fourth strip-shaped plate;

the second X-shaped gripper (6-5) comprises: the first strip-shaped plate, the second strip-shaped plate, the fifth strip-shaped plate and the sixth strip-shaped plate;

the first strip-shaped plate of the first X-shaped mechanical claw (6-4) is placed on the second strip-shaped plate of the first X-shaped mechanical claw (6-4) in a manner that the arc-shaped notches are opposite and the second connecting holes are overlapped and concentric; the first strip-shaped plate of the first X-shaped mechanical claw (6-4) is placed on the third strip-shaped plate, and a third connecting hole of the first strip-shaped plate is overlapped and concentric with a fourth connecting hole of the third strip-shaped plate; the second strip-shaped plate of the first X-shaped mechanical claw (6-4) is placed on the fourth strip-shaped plate, and the third connecting hole of the second strip-shaped plate of the first X-shaped mechanical claw (6-4) is overlapped and concentric with the fourth connecting hole of the fourth strip-shaped plate; the third strip-shaped plate is placed on the fourth strip-shaped plate in a manner that the kneading pieces are opposite and the fifth connecting holes are overlapped and concentric;

the first strip-shaped plate of the second X-shaped mechanical claw (6-5) is placed on the second strip-shaped plate of the second X-shaped mechanical claw (6-5) in a manner that the arc-shaped notches are opposite and the second connecting hole is overlapped and concentric; the first strip-shaped plate of the second X-shaped mechanical claw (6-5) is placed on the fifth strip-shaped plate, and the third connecting hole of the first strip-shaped plate of the second X-shaped mechanical claw (6-5) is overlapped and concentric with the sixth connecting hole of the fifth strip-shaped plate; the second strip-shaped plate of the second X-shaped mechanical claw (6-5) is placed on the sixth strip-shaped plate, and the third connecting hole of the second strip-shaped plate of the second X-shaped mechanical claw (6-5) is overlapped and concentric with the sixth connecting hole of the sixth strip-shaped plate; the fifth strip-shaped plate is placed on the sixth strip-shaped plate in a manner that a seventh connecting hole of the fifth strip-shaped plate is overlapped and concentric with a seventh connecting hole of the sixth strip-shaped plate;

the convex surface of the first arc-shaped plate (6-2) is arranged on the arc-shaped notch of the first strip plate in the first X-shaped mechanical claw (6-4) and the arc-shaped notch of the first strip plate in the second X-shaped mechanical claw (6-5) in a matching way, the convex surface of the second arc-shaped plate (6-3) is arranged on the arc-shaped notch of the second strip-shaped plate of the first X-shaped mechanical claw (6-4) and the arc-shaped notch of the second strip-shaped plate in the second X-shaped mechanical claw (6-5) in a matching way, and the first X-shaped mechanical claw (6-4) and the second X-shaped mechanical claw (6-5) are separated by a preset distance, the first connecting piece (6-6) penetrates through the second connecting hole of the first X-shaped mechanical claw (6-4) and the second connecting hole of the second X-shaped mechanical claw (6-5) and is installed; the second connecting pieces (6-7) respectively penetrate through the third connecting holes of the first strip-shaped plates and the fourth connecting holes of the third strip-shaped plates in the first X-shaped mechanical claws (6-4) and are installed, and the third connecting pieces (6-8) respectively penetrate through the third connecting holes of the first strip-shaped plates in the second X-shaped mechanical claws (6-5) and the sixth connecting holes of the fifth strip-shaped plates and are installed; the fourth connecting piece (6-9) penetrates through a third connecting hole of a second strip-shaped plate in the first X-shaped mechanical claw (6-4) and a fourth connecting hole of the fourth strip-shaped plate respectively and is installed; the fifth connecting piece (6-10) respectively penetrates through a third connecting hole of a second strip-shaped plate in the second X-shaped mechanical claw (6-5) and a sixth connecting hole of the sixth strip-shaped plate and is installed; the sixth connecting piece (6-11) penetrates through the fifth connecting hole of the third strip-shaped plate, the fifth connecting hole of the fourth strip-shaped plate, the seventh connecting hole of the fifth strip-shaped plate and the seventh connecting hole of the sixth strip-shaped plate and is installed;

the first locking piece (6-1) is mounted on a second connecting piece (6-7) connecting the first X-shaped gripper (6-4) and the second X-shaped gripper (6-5) through a first connecting hole of the first locking piece (6-1), wherein when the kneading element distance of the third strip-shaped plate and the kneading element distance of the fourth strip-shaped plate becomes smaller, the distance between the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) becomes larger, and under the condition that the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) are matched to wrap the landing gear, the locking groove of the first locking plate is clamped on the fourth connecting piece (6-9), so that the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) are matched to wrap the undercarriage to achieve a stable state.

6. The tug wheel of claim 5 wherein said nip member is an L-shaped plate structure with a horizontal plane surface coplanar with a plane surface of said third strip;

when the distance between the vertical plate of the L-shaped plate-shaped structure of the third strip-shaped plate and the vertical plate of the L-shaped plate-shaped structure of the fourth strip-shaped plate is reduced, the distance between the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) is increased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) in a matched mode, the locking groove of the first locking plate is clamped on the third connecting piece (6-8), so that the undercarriage is wrapped by the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) in a matched mode to achieve a stable state.

7. The tug wheel of claim 5 wherein said first strip is a strip with a longitudinal and arc-shaped side, wherein said first strip has an arc-shaped notch at the end of the side of the concave surface.

8. A dragger wheel according to any one of claims 5 to 6, characterized in that said second gripper (7) comprises: the device comprises a second locking piece (7-1), an adjusting piece (7-2), two second X-shaped mechanical claws (6-5), a first arc-shaped plate (6-2), a second arc-shaped plate (6-3), a first connecting piece (6-6), a second connecting piece (6-7), a third connecting piece (6-8), a fourth connecting piece (6-9), a fifth connecting piece (6-10) and a sixth connecting piece (6-11);

an eighth connecting hole is formed in the plate surface of one end of the adjusting piece (7-2);

the second locking piece (7-1) is the same as the first locking piece (6-1);

the convex surface of the first arc-shaped plate (6-2) is installed on the arc-shaped notch of the first strip-shaped plate of the two second X-shaped mechanical claws (6-5) in a matched mode, the convex surface of the second arc-shaped plate (6-3) is installed on the arc-shaped notch of the second strip-shaped plate of the two second X-shaped mechanical claws (6-5) in a matched mode, and the two second X-shaped mechanical claws (6-5) are away from each other by a preset distance; the first connecting pieces (6-6) penetrate through the second connecting holes and the eighth connecting holes of the two second X-shaped mechanical claws (6-5) and are installed, the second connecting pieces (6-7) penetrate through the third connecting holes of a first strip-shaped plate in one second X-shaped mechanical claw (6-5) and the sixth connecting holes of a fifth strip-shaped plate and are installed, the third connecting pieces (6-8) penetrate through the third connecting holes of a first strip-shaped plate in the other second X-shaped mechanical claw (6-5) and the sixth connecting holes of a fifth strip-shaped plate and are installed, the fourth connecting pieces (6-9) penetrate through the third connecting holes of a second strip-shaped plate in one second X-shaped mechanical claw (6-5) and the sixth connecting holes of the sixth strip-shaped plate and are installed, and the fifth connecting pieces (6-10) penetrate through the sixth connecting holes of the other second X-shaped mechanical claw (6-5) respectively A third connecting hole of the second strip-shaped plate and a sixth connecting hole of the sixth strip-shaped plate are installed in parallel, and a sixth connecting piece (6-11) penetrates through a seventh connecting hole of the fifth strip-shaped plate and a seventh connecting hole of the sixth strip-shaped plate in the two X-shaped mechanical claws and is installed in parallel;

the second locking piece (7-1) is installed on the second connecting piece (6-7) through a first connecting hole of the second locking piece (7-1), wherein under the condition that the adjusting piece (7-2) is rotated, the distance between the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) is increased or decreased, and under the condition that the undercarriage is wrapped by the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) in a matched mode, the locking groove of the second locking plate is clamped on the fourth connecting piece (6-9), so that the undercarriage is wrapped by the first arc-shaped plate (6-2) and the second arc-shaped plate (6-3) in a matched mode and reaches a stable state.

9. A dragger wheel according to claim 8, characterized in that on said adjustment member (7-2) there is provided a handle for rotation.

10. A tug wheel according to claim 1, characterised in that the end on the handle (3) is provided with an anti-slip sleeve.