CN217672698U - Ground idle load-bearing support vehicle capable of lifting and steering - Google Patents

Abstract

The utility model discloses a ground idle wheel carrier vehicle capable of lifting and steering, which comprises a frame body, wherein the frame body is connected with a lifting component, the lifting component is uniformly distributed around the frame body, the lifting component is connected with a roller, and the height of the roller can be adjusted by the lifting component, so that the roller can be butted with the ground or hung in the air, and the frame body is hung in the air or hung on the ground; the front end of the frame body is provided with a traction assembly, the traction assembly can be connected with a traction device to provide power for the frame vehicle, the other end of the traction assembly is connected with a steering assembly, the steering assembly is connected with a lifting assembly at the front end of the frame body, and the traction assembly can drive the steering assembly to rotate so as to drive the lifting assembly to rotate to change the moving direction of the roller. The clearance between the tray and the ground of the ground idle load-bearing support vehicle capable of taking off, landing and steering can be adjusted, so that the problem that the folded angle position of a cabin door springboard and a cabin floor of a helicopter is inconvenient to move is solved; in addition, through adjusting lifting unit, the tray can keep flat on the cabin floor, has improved the stability of goods.

Description

Ground idle load-bearing support vehicle capable of lifting and steering

Technical Field

The utility model relates to a helicopter transportation field especially relates to a ground idle load support car that can take off and land, turn to.

Background

The helicopter air transportation has the advantages and characteristics of high operation speed, strong obstacle crossing capability and high social and economic benefits, particularly can accurately realize point-to-point direct transportation at medium and short distances. However, because the transportation helicopter has a small cabin door, a low ramp carrying capacity of a tail cabin door, a low local carrying capacity of a bottom plate in the cabin, and a low empennage, the existing loading and unloading equipment and tools (such as a crane and a forklift) cannot meet the loading and unloading requirements of heavy goods with large volume and heavy weight, and therefore, a support vehicle applied to ground-to-air transfer is urgently needed to solve the above major technical problems and safely and reliably realize the loading and unloading and transportation of the heavy goods on the helicopter.

Ordinary walking tray only can realize the function of transportation, even with inside freight to the cabin, because support car self removes, and the goods focus is higher, in the helicopter transportation, the support car causes the potential safety hazard because inertial effect easily takes place to remove, and cabin inner space is narrow and small simultaneously, and ordinary support car turns to the function not enough, can not remove in a flexible way, and consequently, ordinary support car can't satisfy the loading and unloading requirement of transporting the helicopter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ground idle load-bearing support vehicle capable of taking off, landing and steering, which has the effect of loading and unloading heavy materials quickly and efficiently. The specific technical scheme is as follows:

a ground idle load-bearing support vehicle capable of lifting and steering comprises a support body, wherein a tray for loading goods is arranged on the support body, and a hollow-out part is arranged on the tray to reduce the overall weight of the support vehicle; the frame body is connected with the lifting assembly, the lifting assembly is uniformly distributed around the frame body, the lifting assembly is connected with the roller, and the height of the roller can be adjusted by the lifting assembly, so that the roller can be abutted or suspended with the ground, and the frame body is suspended or abutted with the ground; the support body front end is provided with the traction assembly, and the traction assembly can link to each other with draw gear in order to provide power for the support car, and the other end of traction assembly links to each other with the subassembly that turns to, turns to the subassembly and links to each other with the lifting unit of support body front end, thereby traction assembly can drive the rotation of turning to the subassembly and drive lifting unit and rotate the moving direction in order to change the gyro wheel.

Further, lifting unit includes casing, gear train, screw rod and rocker, and the casing links to each other with the support body is fixed, and the one end setting of output lever links to each other in the casing and with the screw rod, and the other end of output lever links to each other with the gyro wheel, and the screw rod links to each other with the gear train, and the gear train links to each other with the rocker, and rotatory rocker can drive the screw rod and rotate to the drive output lever is flexible for the casing, in order to realize the regulation of gyro wheel height.

Further, the output rod comprises a threaded sleeve and a roller supporting rod, the threaded sleeve is a hollow rod body and is accommodated in the shell, a screw rod connecting part extends inwards from the center of the top of the threaded sleeve, a threaded hole matched with the screw rod is formed in the center of the screw rod connecting part, and the screw rod can be rotated to drive the threaded sleeve to move up and down in the shell; the bottom joint of threaded sleeve has gyro wheel branch, and the bottom of gyro wheel branch links to each other with the gyro wheel.

Furthermore, a clamping part is arranged at one end of the roller supporting rod connected with the threaded sleeve, the diameter of the clamping part is larger than that of the roller supporting rod, the bottom of the threaded sleeve is connected with a sleeve end cover, a through hole is formed in the center of the sleeve end cover, and the sleeve end cover is sleeved on the roller supporting rod; be provided with the spring in the threaded sleeve, the one end of spring cup joints in the outside of screw rod connecting portion and inconsistent with the inner wall at threaded sleeve's top, and the other end and the joint portion of spring are inconsistent, and under the spring action of spring, joint portion and sleeve end cover are inconsistent to realize the telescopic connection of gyro wheel branch screw thread.

Further, the gear train sets up the top in the casing, the gear train includes first bevel gear and second bevel gear, first bevel gear and second bevel gear meshing, the rocker is fixed continuous and coaxial setting with the second bevel gear, first bevel gear links to each other and coaxial setting with the screw rod is fixed, the screw rod holding in threaded sleeve and with screw rod connecting portion threaded connection, thereby it rotates to rotate the rocker and drives second bevel gear and rotate and then drive the screw rod and rotate, the screw rod rotates and can drive threaded sleeve and reciprocate, thereby realize the flexible of output lever.

Further, one end of the roller supporting rod, which is far away from the shell, is connected with a roller bracket, and a roller is arranged on the roller bracket; the roller supporting rod is connected with the steering assembly, and the steering assembly can drive the roller supporting rod to rotate, so that the roller is driven to rotate to change the moving direction of the roller.

Further, turn to the fixed front end that sets up at the support body of subassembly, turn to the subassembly including turning to the dead lever, it is fixed continuous with the support body to turn to the dead lever, the both sides of turning to the dead lever are provided with and turn to connecting portion, lifting unit's casing with turn to connecting portion and fixed linking to each other, it is provided with the branch accommodation hole to turn to connecting portion, gyro wheel branch holding is in the branch accommodation hole, gyro wheel branch can rotate for turning to connecting portion, be provided with the knuckle arm in turning to connecting portion, the knuckle arm links to each other with gyro wheel branch, the drive knuckle arm rotates and can drive gyro wheel branch and rotate, and then the drive gyro wheel rotates in order to change gyro wheel moving direction.

Furthermore, the steering assembly comprises a guide rod, one end of the steering arm is hinged with the guide rod, the other end of the steering arm is fixedly connected with the roller supporting rod, and the guide rod is connected with the driving arm; the steering spindle is arranged at the middle position of the fixing rod in a penetrating mode, one end of the steering spindle is connected with the traction assembly, the other end of the steering spindle is connected with the driving arm, one end, far away from the steering spindle, of the driving arm is connected with the middle position of the guide plate, the traction assembly rotates to drive the steering spindle to rotate, and therefore the guide plate is driven to move through the driving arm, and the steering arm is driven to rotate to change the moving direction of the idler wheel.

Furthermore, the traction assembly comprises a traction arm, a first installation lifting lug is arranged at the end part of the traction arm, a second installation lifting lug is arranged on the steering shaft, and the first installation lifting lug is hinged with the second installation lifting lug so as to realize the connection of the traction assembly and the steering shaft.

Furthermore, one end of the traction arm, which is far away from the steering assembly, is provided with a traction ring, and the traction ring can be connected with a traction device to provide power for the support vehicle; the handrail is arranged at the position of the traction arm close to the traction ring, and the handrail can conveniently and manually pull the support vehicle to walk; a brake handle is arranged below the handrail, the brake handle is connected with a brake through a brake cable, and the brake is connected with the roller, so that the support vehicle can be conveniently braked.

The clearance between the tray and the ground of the ground idle load-bearing support vehicle capable of taking off, landing and steering can be adjusted at will, so that the problem that the folded angle position of a cabin door springboard and a cabin floor of a helicopter is inconvenient to move is solved; in addition, the tray can be flatly placed on the floor of the cabin by adjusting the lifting assembly, so that the gravity center of the goods is reduced, and the stability of the goods is improved; meanwhile, the support frame can be flexibly moved by arranging the steering assembly and the brake device, so that heavy goods can be smoothly loaded on the transportation helicopter under the operation of a small number of personnel, and the requirements of timeliness and safety of loading and unloading of the heavy goods on the helicopter are effectively met.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a perspective view of a ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 2 is a side view of the lifting assembly of the ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 3 is a cross-sectional view of the lifting assembly of the ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 4 is a perspective view of the roller support rod of the ground idle load-bearing carriage capable of taking off, landing and steering according to the present invention;

fig. 5 is an exploded view of the output rod of the ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 6 is a perspective view of a steering assembly of the ground idling support vehicle capable of lifting and steering according to the present invention 1;

fig. 7 is a perspective view 2 of a steering assembly of the ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 8 is a perspective view of a steering arm of the ground idling support vehicle capable of taking off, landing and steering according to the present invention;

fig. 9 is a perspective view of a traction assembly of the ground idling support vehicle capable of lifting and steering according to the present invention.

Detailed Description

In order to better understand the purpose, function and specific design scheme of the present invention, the ground idle supporting rack vehicle capable of taking off, landing and steering according to the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-9, the ground idling support vehicle capable of taking off, landing and steering of the present invention includes a frame body 1, a tray 11 for loading goods is provided on the frame body 1, and a hollow portion is provided on the tray 11 to reduce the overall weight of the support vehicle; the frame body 1 is connected with the lifting assembly 2, the lifting assembly 2 is uniformly distributed around the frame body 1, the lifting assembly 2 is connected with the roller 3, and the lifting assembly 2 can adjust the height of the roller 3 so that the roller 3 can be abutted or suspended with the ground, and the frame body 1 is suspended or abutted with the ground; the front end of the frame body 1 is provided with a traction assembly 4, one end of the traction assembly 4 is provided with a traction ring 41, the traction ring 41 can be connected with a traction device to provide power for the support vehicle, the other end of the traction assembly 4 is connected with a steering assembly 5, the steering assembly 5 is connected with a lifting assembly 2 at the front end, the traction assembly 4 can drive the steering assembly 5 to rotate so as to drive the lifting assembly 2 to rotate to change the moving direction of the roller 3, and therefore the steering function of the support vehicle is achieved.

Specifically, as shown in fig. 2 to 5, the lifting assembly 2 includes a housing 21, a gear set 22, a screw 23, and a rocker 24, the housing 21 is fixedly connected to the frame body 1, one end of an output rod 25 is disposed in the housing 21 and connected to the screw 23, the other end of the output rod 25 is connected to the roller 3, the screw 23 is connected to the gear set 22, the gear set 22 is connected to the rocker 24, and the rotation of the rocker 24 can drive the screw 23 to rotate, so as to drive the output rod 25 to extend and retract relative to the housing 21, thereby adjusting the height of the roller 3.

The output rod 25 includes a threaded sleeve 26 and a roller support rod 27, the threaded sleeve 26 is a hollow rod, one end of the threaded sleeve 26 is accommodated in the housing 21 and can move telescopically relative to the housing 21 but cannot rotate axially relative to the housing 21, for example, a long protrusion is arranged on the inner side wall of the housing 21 along the length direction, an elongated groove is arranged on the outer surface of the corresponding threaded sleeve 26, and the long protrusion and the elongated groove are matched to realize the function that the threaded sleeve 26 can move telescopically relative to the housing 21 but cannot rotate axially relative to the housing 21. In addition, a groove may be formed in the vertical direction of the side wall of the threaded sleeve 26, then a threaded hole is drilled in the housing 21 and connected with a positioning screw, and the positioning screw is in sliding fit with a groove in the side wall of the threaded sleeve 26, so that the up-and-down movement of the whole threaded sleeve 26 in the housing 21 is ensured.

A screw connecting portion 261 is provided at a top center position of the threaded sleeve 26 to extend inward, a threaded hole matched with the screw 23 is provided at a center position of the screw connecting portion 261, and the threaded sleeve 26 can be driven to move up and down in the housing 21 by rotating the screw 23. The bottom of the threaded sleeve 26 is clamped with a roller support 27, the bottom of the roller support 27 is connected with the roller 3, and the roller support 27 can axially rotate relative to the threaded sleeve 26 and can move up and down relative to the shell 21 along with the threaded sleeve 26.

Specifically, a clamping portion 271 is arranged at one end, connected with the threaded sleeve 26, of the roller support rod 27, the diameter of the clamping portion 271 is larger than that of the roller support rod 27, the bottom of the threaded sleeve 26 is connected with the sleeve end cover 262, a through hole is formed in the center of the sleeve end cover 262, the sleeve end cover 262 is sleeved on the roller support rod 27, and the roller support rod 27 can rotate relative to the sleeve end cover 262; the spring 28 is arranged in the threaded sleeve 26, one end of the spring 28 abuts against the inner wall of the top of the threaded sleeve 26 and sleeved on the outer side of the screw connecting portion 261, the other end of the spring 28 abuts against the clamping portion 271, and under the elastic force action of the spring 28, the clamping portion 271 abuts against the sleeve end cover 262 to achieve connection of the roller support rod 27 and the threaded sleeve 26, namely, the roller support rod 27 can axially rotate relative to the threaded sleeve 26 and can move up and down relative to the shell 21 along with the threaded sleeve 26. Preferably, a rubber gasket is arranged between the clamping portion 271 and the sleeve end cover 262 to reduce noise generated by friction or collision between the clamping portion 271 and the sleeve end cover 262. In addition, by providing the spring 28, the roller rod 27 can slide relatively in the threaded sleeve 26 during the transportation of goods, thereby providing a buffering function and a shock absorbing function when the roller 3 rolls on the ground. Preferably, the top of the roller support rod 27 is provided with a buffering limiting part 275, the buffering limiting part 275 comprises a screw rod accommodating groove, and the screw rod 23 can be inserted into the screw rod accommodating groove and abut against the buffering limiting part 275 to limit the buffering distance of the roller support rod 27.

Preferably, a bearing seat 272 is arranged on the clamping portion 271, a bearing is arranged in the bearing seat 272, the bearing is connected with the roller support rod 27, and the roller support rod 27 can rotate relative to the bearing. One end of the bearing, which is far away from the bearing seat 272, is provided with a baffle plate 29, the spring 28 is abutted against the baffle plate 29, the bearing is fixed in the bearing seat 272 under the elastic force action of the spring 28, and the clamping part 271 is abutted against the sleeve end cover 262, so that the connection of the roller support rod 27 and the threaded sleeve 26 is realized. By adding bearings, the roller arm 27 is more easily rotated, thereby facilitating the rotation of the roller 3 driven by the steering assembly 5.

The gear set 22 is arranged at the top in the housing 21, the gear set 22 includes a first bevel gear 221 and a second bevel gear 222, the first bevel gear 221 is engaged with the second bevel gear 222, the rocker 24 is fixedly connected with and coaxially arranged with the second bevel gear 222, the first bevel gear 221 is fixedly connected with and coaxially arranged with the screw 23, the screw 23 is accommodated in the threaded sleeve 26 and is in threaded connection with the screw connecting portion 261, the rocker 24 is rotated to drive the second bevel gear 222 to rotate so as to drive the first bevel gear 221 to rotate and further drive the screw 23 to rotate, the screw 23 is rotated to drive the threaded sleeve 26 to move up and down, thereby realizing the extension and retraction of the output rod 25.

One end of the roller support rod 27 far away from the shell 21 is connected with a roller bracket 31, and a roller 3 is arranged on the roller bracket 31. The roller support rod 27 of the present embodiment is connected to the steering assembly 5, and the steering assembly 5 can drive the roller support rod 27 to rotate, so as to drive the roller bracket 31 to rotate, and further drive the roller 3 to rotate to change the moving direction of the roller 3.

Specifically, one end of the roller arm 27 away from the housing 21 is provided with a bracket connection part 273, and the diameter of the bracket connection part 273 is smaller than that of the roller arm 27, so that a shoulder is formed at the position where the bracket connection part 273 is connected with the roller arm 27; the cross section of the bracket connecting part 273 is polygonal, and a support rod connecting hole matched with the shape of the bracket connecting part 273 is formed in the corresponding roller bracket 31; the tip of support connection portion 273 is provided with the jump ring groove, and support connection portion 273 can pass the branch connecting hole on the gyro wheel support 31 and make the shaft shoulder on the gyro wheel branch 27 inconsistent with gyro wheel support 31, and jump ring inslot connection jump ring can realize being connected of gyro wheel branch 27 and gyro wheel support 31.

Preferably, one side of the roller 3 is connected with a brake 61, the brake 61 is connected with a brake cable 62, the brake cable 62 is connected with a brake handle 63, the brake handle 63 is fixedly arranged on the traction assembly 4, and the roller 3 can be braked by pressing the brake handle 63 so as to facilitate the parking of the bracket vehicle.

As shown in fig. 6-8, the steering assembly 5 is fixedly disposed at the front end of the frame body 1, the steering assembly 5 includes a steering fixing rod 51, the steering fixing rod 51 is fixedly connected to the frame body 1, steering connection portions 52 are disposed on two sides of the steering fixing rod 51, the housing 21 of the lifting assembly 2 is fixedly connected to the steering connection portions 52, the steering connection portions 52 are provided with support rod receiving holes, the roller support rods 27 are received in the support rod receiving holes, the roller support rods 27 can rotate relative to the steering connection portions 52, steering arms 53 are disposed in the steering connection portions 52, the steering arms 53 are connected to the roller support rods 27, and the roller support rods 27 can be driven to rotate by driving the steering arms 53 to rotate, so as to drive the rollers 3 to rotate to change the moving direction of the rollers 3.

The steering link 52 is provided with a steering arm receiving groove 54 in the horizontal direction, the steering arm 53 is received in the steering arm receiving groove 54 and connected to the roller bar 27, and the steering arm 53 is restricted in position in the vertical direction by the provision of the steering arm receiving groove 54, so that the steering arm 53 is more smoothly rotated in the horizontal direction.

It should be noted that a plurality of limiting grooves 274 are vertically and uniformly distributed on the outer surface of the roller support rod 27, a roller support rod mounting hole 531 is formed at one end of the steering arm 53 connected with the roller support rod 27, a plurality of limiting protrusions 532 matched with the limiting grooves 274 in shape are arranged in the roller support rod mounting hole 531, the roller support rod 27 can be inserted into the roller support rod mounting hole 531 to realize the connection between the roller support rod 27 and the steering arm 53, and the steering arm 53 can be limited from rotating in the axial direction relative to the roller support rod 27 by the matching of the limiting grooves 274 and the limiting protrusions 532, so that the steering arm 53 works more reliably.

The steering assembly 5 further comprises a guide rod 55, one end of the steering arm 53 is hinged to the guide rod 55, the other end of the steering arm 53 is fixedly connected to the roller support rod 27, the guide rod 55 is connected to a driving arm 56, the driving arm 56 is connected to the traction assembly 4, and the traction assembly 4 can drive the guide rod 55 to move through the driving arm 56, so that the steering arm 53 is driven to rotate to change the moving direction of the roller 3.

In the embodiment, a steering shaft 57 penetrates through the middle position of the steering fixing rod 51, one end of the steering shaft 57 is connected with the traction assembly 4, the other end of the steering shaft 57 is connected with the driving arm 56, one end, far away from the steering shaft 57, of the driving arm 56 is connected with the middle position of the guide rod 55, the traction assembly 4 can drive the steering shaft 57 to rotate, so that the driving arm 56 drives the guide rod 55 to move, and the steering arm 53 is driven to rotate to change the moving direction of the roller 3.

As shown in fig. 9, the towing assembly 4 includes a towing arm 42, a first mounting lug 421 is disposed at an end of the towing arm 42, a second mounting lug 571 is disposed on the steering shaft 57, and the first mounting lug 421 is hinged to the second mounting lug 571, so as to connect the towing assembly 4 to the steering shaft 57. The end of the towing arm 42 remote from the steering assembly 5 is provided with a towing loop 41, the towing loop 41 being connectable to a towing means, which may be a winch, a tractor or the like, to power the truck. The position of the traction arm 42 close to the traction ring 41 is provided with a handrail 43, and the handrail 43 can facilitate the manual pulling of the support vehicle to walk. A brake handle 63 is arranged below the handrail 43, and the brake handle 63 is connected with a brake 61 on the roller 3 through a brake cable 62 so as to brake the support vehicle conveniently.

The utility model discloses a ground idle load support car that can take off and land, turn to when using, adjust lifting unit 2, make output rod 25 be in the shrink extreme state, gyro wheel 3 is packed up this moment, support body 1 falls subaerial, support car can't move this moment, hoist the container of being equipped with goods and materials to the layer board of support, accomplish the loading operation of container, readjust lifting unit 2 and make output rod 25 stretch out, gyro wheel 3 rises to adjust the shipment height of support body 1, so that support car can carry out the transportation operation on ground, certain slope or track; when the container is conveyed to the designated position inside the cabin, the lifting assembly 2 is adjusted to reduce the height of the support body 1, the container falls on a bottom plate of the cabin, loading of the container is completed, the support vehicle cannot move at the moment, the helicopter transports the support vehicle and the container together to a destination, then the lifting assembly 2 is adjusted to enable the output rod 25 to extend out, the roller 3 is lifted, the support vehicle and the container are transported together to move out of the cabin to the designated unloading position, the lifting assembly 2 is adjusted to enable the output rod 25 to be in a contraction limit state, the roller 3 is retracted at the moment, the support body 1 falls on the ground, the support vehicle cannot move at the moment, and then the container can be hoisted and unloaded.

The clearance between the tray and the ground of the ground idling carrier vehicle capable of taking off, landing and steering can be adjusted at will, and the problem that the position of the folding angle of a cabin door springboard and a cabin floor of a helicopter is inconvenient to move is solved; in addition, the tray can be flatly placed on the floor of the cabin by adjusting the lifting assembly, so that the gravity center of the goods is reduced, and the stability of the goods is improved; meanwhile, the support frame can be flexibly moved by arranging the steering assembly and the brake device, heavy goods can be guaranteed to be smoothly loaded on the transportation helicopter under the operation of a small amount of personnel, and the requirements of timeliness and safety of loading and unloading of the heavy goods on the helicopter are effectively met.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A ground idle load-bearing support vehicle capable of taking off, landing and steering is characterized by comprising a support body, wherein a tray for loading goods is arranged on the support body, and a hollow part is arranged on the tray to reduce the whole weight of the support vehicle; the frame body is connected with the lifting assembly, the lifting assembly is uniformly distributed around the frame body, the lifting assembly is connected with the roller, and the height of the roller can be adjusted by the lifting assembly, so that the roller can be abutted or suspended with the ground, and the frame body is suspended or abutted with the ground; the support body front end is provided with the traction assembly, and the traction assembly can link to each other with draw gear in order to provide power for the support car, and the other end of traction assembly links to each other with the subassembly that turns to, turns to the subassembly and links to each other with the lifting unit of support body front end, thereby traction assembly can drive the rotation of turning to the subassembly and drive lifting unit and rotate the moving direction in order to change the gyro wheel.

2. The take-off, landing and steering ground idling support vehicle of claim 1, wherein the lifting assembly includes a housing fixedly connected to the frame, a gear set, a screw, and a rocker, one end of an output rod is disposed in the housing and connected to the screw, the other end of the output rod is connected to the roller, the screw is connected to the gear set, the gear set is connected to the rocker, and rotating the rocker drives the screw to rotate, thereby driving the output rod to extend and retract relative to the housing to achieve height adjustment of the roller.

3. The take-off, landing and steering ground idling support carriage vehicle as claimed in claim 2, wherein the output rod comprises a threaded sleeve and a roller support rod, the threaded sleeve is a hollow rod body, the threaded sleeve is accommodated in the housing, a screw rod connecting part is arranged at the central position of the top of the threaded sleeve in an inward extending mode, a threaded hole matched with the screw rod is arranged at the central position of the screw rod connecting part, and the threaded sleeve can be driven to move up and down in the housing by rotating the screw rod; the bottom joint of threaded sleeve has gyro wheel branch, and the bottom of gyro wheel branch links to each other with the gyro wheel.

4. The lifting and steering ground idling carrier vehicle according to claim 3, wherein a clamping portion is provided at an end of the roller support rod connected to the threaded sleeve, the diameter of the clamping portion is larger than that of the roller support rod, the bottom of the threaded sleeve is connected to a sleeve end cover, a through hole is provided at a central position of the sleeve end cover, and the sleeve end cover is sleeved on the roller support rod; be provided with the spring in the threaded sleeve, the one end of spring cup joints in the outside of screw rod connecting portion and inconsistent with the inner wall at threaded sleeve's top, and the other end and the joint portion of spring are inconsistent, and under the spring action of spring, joint portion and sleeve end cover are inconsistent to realize the telescopic connection of gyro wheel branch screw thread.

5. The ground idle carrier vehicle capable of taking off, landing and steering according to claim 3, wherein the gear set is arranged at the top of the housing, the gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is meshed with the second bevel gear, the rocker is fixedly connected with the second bevel gear and coaxially arranged, the first bevel gear is fixedly connected with the screw rod and coaxially arranged, the screw rod is accommodated in the threaded sleeve and is in threaded connection with the screw rod connecting part, the rocker is rotated to drive the second bevel gear to rotate so as to drive the first bevel gear to rotate and further drive the screw rod to rotate, and the screw rod can drive the threaded sleeve to move up and down so as to achieve the extension and retraction of the output rod.

6. The take-off, landing and steering ground idling support carriage of claim 3, wherein the end of the roller support bar remote from the housing is connected to a roller support, the roller support having rollers thereon; the roller supporting rod is connected with the steering assembly, and the steering assembly can drive the roller supporting rod to rotate, so that the roller is driven to rotate to change the moving direction of the roller.

7. The ground idling vehicle as claimed in claim 3, wherein the steering assembly is fixedly provided at a front end of the frame body, the steering assembly comprises a steering fixing rod fixedly connected to the frame body, steering connecting portions are provided at both sides of the steering fixing rod, the housing of the lifting assembly is fixedly connected to the steering connecting portions, the steering connecting portions are provided with rod receiving holes, the roller rods are received in the rod receiving holes, the roller rods are rotatable with respect to the steering connecting portions, steering arms are provided in the steering connecting portions, the steering arms are connected to the roller rods, and the roller rods are driven to rotate by driving the steering arms to rotate, thereby driving the rollers to rotate to change the moving direction of the rollers.

8. The take-off, landing and steering ground idling support vehicle of claim 7, wherein the steering assembly includes a guide rod, one end of the steering arm is hinged to the guide rod, and the other end of the steering arm is fixedly connected to the roller support rod, and the guide rod is connected to the driving arm; the steering spindle is arranged at the middle position of the fixing rod in a penetrating mode, one end of the steering spindle is connected with the traction assembly, the other end of the steering spindle is connected with the driving arm, one end, far away from the steering spindle, of the driving arm is connected with the middle position of the guide plate, the traction assembly rotates to drive the steering spindle to rotate, so that the guide plate is driven to move through the driving arm, and the steering arm is driven to rotate to change the moving direction of the roller.

9. The liftable and steerable ground-idling support vehicle of claim 1, wherein the towing assembly comprises a towing arm, a first mounting lug is arranged at the end of the towing arm, a second mounting lug is arranged on the steering shaft, and the first mounting lug is hinged with the second mounting lug to realize the connection of the towing assembly with the steering shaft.

10. The take-off, landing and steering ground idling vehicle support of claim 9, wherein the end of the draft arm remote from the steering assembly is provided with a draft ring, the draft ring being connectable to a draft gear to power the support vehicle; the handrail is arranged at the position of the traction arm close to the traction ring, and the handrail can conveniently and manually pull the support vehicle to walk; a brake handle is arranged below the handrail and connected with a brake through a brake cable, and the brake is connected with the roller wheel so as to brake the support vehicle conveniently.

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