CN111825009A

CN111825009A - Aircraft cargo transportation mounting device

Info

Publication number: CN111825009A
Application number: CN202010683450.0A
Authority: CN
Inventors: 丁超; 蔡霞; 戚久琳; 王静; 曹雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2020-10-27
Anticipated expiration: 2040-07-16
Also published as: CN111825009B

Abstract

The invention provides an aircraft cargo transportation and mounting device, which relates to the technical field of loading equipment and comprises a bearing platform, a lifting unit and a traveling unit; the lifting unit is connected between the bearing platform and the lifting platform; the advancing unit is arranged on the bearing platform; the lifting unit comprises a rotary lifting mechanism and a lifting driving mechanism; the rotary lifting mechanism comprises a driving rotary arm and a main rotary arm; the upper end of the driving rotary arm is hinged with the main rotary arm through a driving rotary arm auxiliary shaft; the upper end of the main rotary arm is hinged with the lifting platform through a main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft is connected with the lifting platform in a sliding mode. Through this aircraft freight carry device, the lower technical problem of power transmission efficiency of the scissor fork lift mode that has solved among the prior art.

Description

Aircraft cargo transportation mounting device

Technical Field

The invention relates to the technical field of loading equipment, in particular to an aircraft cargo transportation and loading device.

Background

At present, in the existing aircraft cargo transportation and carrying device at home and abroad, a scissor-fork type lifting mode is mostly adopted in a power transmission mode in the lifting process, a larger part of power is used in the horizontal direction in the lifting process, and a smaller part of power is used in the vertical direction, so that the power transmission efficiency is lower.

Disclosure of Invention

The invention aims to provide an aircraft cargo transportation and mounting device, which aims to solve the technical problem that the power transmission efficiency of a scissor-fork type lifting mode in the prior art is low.

The embodiment of the invention provides an aircraft cargo transportation and mounting device, which comprises: the device comprises a bearing platform, a lifting unit and a traveling unit; the lifting unit is connected between the bearing platform and the lifting platform; the traveling unit is arranged on the bearing platform; the lifting unit comprises two groups of rotary lifting mechanisms and lifting driving mechanisms, and the two groups of rotary lifting mechanisms support the lifting platform together; the rotary lifting mechanism comprises a driving rotary arm and a main rotary arm, and the lower ends of the driving rotary arm and the main rotary arm are respectively hinged with the bearing platform through a driving rotary arm main shaft and a main rotary arm main shaft; the upper end of the driving rotary arm is hinged with the main rotary arm through a driving rotary arm auxiliary shaft, and the driving rotary arm auxiliary shaft is connected with the main rotary arm in a sliding mode; the upper end of the main rotary arm is hinged with the lifting platform through a main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft is connected with the lifting platform in a sliding manner; and the two groups of main shafts of the driving rotary arms are in transmission connection with the lifting driving mechanism and are used for enabling the lifting platform to be close to or far away from the bearing platform.

Furthermore, the two groups of rotary lifting mechanisms are respectively arranged at two ends of the bearing platform; in the group of rotary lifting mechanisms, the driving rotary arm and the main rotary arm are both one piece, and the driving rotary arm and the main rotary arm are sequentially arranged; or in one group of the rotary lifting mechanisms, the number of the driving rotary arms and the number of the main rotary arms are two; the two driving rotary arms are respectively connected with the driving rotary arm main shaft and the driving rotary arm auxiliary shaft to form a driving rotary arm frame structure; the two main rotary arms are respectively connected with the main rotary arm main shaft and the main rotary arm auxiliary shaft to form a main rotary arm frame structure; the driving slewing arm frame structure and the main slewing arm frame structure are sequentially arranged.

Furthermore, the rotary lifting mechanism also comprises a transition rotary arm; the upper end of the driving rotary arm is hinged with the transition rotary arm through a driving rotary arm auxiliary shaft, and the driving rotary arm auxiliary shaft is connected with the transition rotary arm in a sliding mode; the upper end of the transition rotary arm is hinged with the main rotary arm through a transition rotary arm auxiliary shaft, and the transition rotary arm auxiliary shaft is connected with the main rotary arm in a sliding manner; the transition rotary arm is one or more, and the driving rotary arm, one or more transition rotary arms and the main rotary arm are sequentially arranged; the number of the transition revolving arms is two or a multiple of two; the two oppositely arranged transition rotary arms are respectively connected with the transition rotary arm main shaft and the transition rotary arm auxiliary shaft to form one or more transition rotary arm frame structures; the driving rotary arm frame structure, one or more pairs of transition rotary arm frame structures and the main rotary arm frame structure are sequentially arranged.

Further, the bearing platform is provided with a central position in the length direction; the lengths of the driving slewing arm frame structure, one or more pairs of transition slewing arm frame structures and the main slewing arm frame structure are sequentially increased; in the two groups of rotary lifting mechanisms, the upper ends of the two groups of main rotary arm frame structures are hinged with the lifting platform across the central position to form a crossed arrangement; or in the two groups of rotary lifting mechanisms, the upper ends of the two groups of main rotary arm frame structures are hinged to two sides of the central position of the bearing platform.

Furthermore, a transition rotary arm guide groove is formed in the transition rotary arm, a main rotary arm guide groove is formed in the main rotary arm, and a frame guide groove is formed in the lifting platform; two ends of the auxiliary shaft of the driving rotary arm are connected with the guide groove of the transition rotary arm in a sliding mode, two ends of the auxiliary shaft of the driving rotary arm are sleeved with auxiliary shaft bearings of the driving rotary arm, and the auxiliary shaft bearings of the driving rotary arm are abutted to one side of the transition rotary arm; two ends of the transition rotary arm auxiliary shaft are connected with the main rotary arm guide groove in a sliding mode, two ends of the transition rotary arm auxiliary shaft are sleeved with transition rotary arm auxiliary shaft bearings, and the transition rotary arm auxiliary shaft bearings are abutted to one side of the main rotary arm; the two ends of the main rotary arm auxiliary shaft are connected with the frame guide groove in a sliding mode, main rotary arm auxiliary shaft bearings are sleeved at the two ends of the main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft bearings are abutted to one side of the lifting platform.

Furthermore, the lifting driving mechanism comprises a transmission component, a gear speed regulating component and a power component; the transmission assembly comprises a driving wheel, a driven wheel and a conveying piece connected with the driving wheel and the driven wheel, and the driving wheel and the driven wheel are both pivoted on the bearing platform; the gear speed regulating assembly is arranged on the bearing platform and comprises a speed reducing wheel set, a direct drive wheel set and a gear shifting wheel set; the driving wheel is connected with the speed reduction wheel set and the direct drive wheel set, and the driven wheel is mounted on the main shaft of the driving slewing arm; the power assembly is in transmission connection with the gear shifting wheel set, drives the gear shifting wheel set to move and is used for enabling the gear shifting wheel set to be in transmission connection with the speed reducing wheel set or the direct drive wheel set so as to realize rotation speed adjustment of the main shaft of the driving slewing arm; and a self-locking structure capable of self-locking in forward and reverse directions is arranged between the power assembly and the gear shifting wheel set.

Furthermore, the lifting platform comprises a lifting frame, and two groups of frame guide grooves are formed in the lifting frame; each group of frame guide grooves is provided with two frame guide grooves which are arranged on two sides of the lifting frame; two ends of the auxiliary shaft of the main rotary arm are connected with a group of frame guide grooves in a sliding manner; in the two groups of frame guide grooves, the frame guide grooves positioned on the same side are arranged at intervals or are communicated with each other.

Furthermore, two groups of platform constraint mechanisms are arranged on the lifting frame; the platform restraint mechanism comprises restraint cable chains, cable chain guide wheels and tension springs, the cable chain guide wheels are arranged at two ends of the lifting frame, two ends of the restraint cable chains are respectively connected with the two main revolving arm auxiliary shafts, and one group of the restraint cable chains are wound around the cable chain guide wheels arranged at one end of the lifting frame; the platform restraint mechanism further comprises a tensioning handle and a tensioning adjusting block, the tensioning adjusting block is rotatably connected with the lifting frame, one end of the tensioning handle is connected with the tensioning adjusting block, and the other end of the tensioning handle is matched with a handle clamping groove formed in the lifting frame; the tensioning adjusting block is simultaneously connected with the cable chain guide wheel.

Further, the bearing platform comprises a bearing frame; the traveling unit comprises a traveling wheel and a driving wheel; the two groups of the traveling wheels are arranged, each group of the traveling wheels comprises at least two traveling wheels, and the two groups of the traveling wheels are respectively and rotatably connected to the two ends of the bearing frame; the driving wheel is rotationally connected with the bearing frame and is positioned at one end of the bearing frame, and one group of the traveling wheels is positioned between the other group of the traveling wheels and the driving wheel; the driving wheel and a group of the travelling wheels adjacent to the driving wheel, one of the driving wheel and the travelling wheel is attached to the ground, and the other one is separated from the ground.

Further, the traveling unit further comprises two groups of steering mechanisms; the steering mechanism comprises a steering assembly and a direction control assembly; each group of the traveling wheels comprises two traveling wheels, the two traveling wheels at the same end respectively correspond to one group of the steering assemblies, and the two traveling wheels share one group of the direction control assemblies; the steering assembly comprises a steering gear ring and a steering gear; the steering gear ring is fixedly connected with the travelling wheel, and the steering gear is rotationally connected with the bearing frame and meshed with the steering gear ring and is used for driving the travelling wheel to steer; the direction control assembly comprises a steering wheel, a steering wheel seat, a steering wheel toothed ring and a steering wheel gear; the steering wheel is rotationally connected to the steering wheel seat through a steering wheel shaft, and the steering wheel seat is mounted on the bearing platform; the steering wheel gear ring is rotatably sleeved on the steering wheel shaft, and the steering wheel gear is rotatably connected to the steering wheel seat and meshed with the steering wheel gear ring; the steering wheel gear is two, and a steering flexible shaft is connected between the steering gear corresponding to the two traveling wheels and the two steering wheel gears respectively.

Has the advantages that:

the lower ends of the driving rotary arm and the main rotary arm are hinged with the bearing platform through the driving rotary arm main shaft and the main rotary arm main shaft respectively; the upper end of the driving rotary arm is hinged with the main rotary arm through a driving rotary arm auxiliary shaft, and the driving rotary arm auxiliary shaft is connected with the main rotary arm in a sliding manner; the upper end of the main rotary arm is hinged with the lifting platform through a main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft is connected with the lifting platform in a sliding manner; when the lifting driving mechanism drives the two groups of driving rotary arm main shafts to rotate, the driving rotary arm and the main rotary arm rotate around the driving rotary arm main shaft and the main rotary arm main shaft respectively, so that the driving rotary arm and the main rotary arm are linked, and the lifting platform is far away from (ascends) or close to (descends) the bearing platform.

According to the aircraft cargo transport and loading device, the lifting unit in the aircraft cargo transport and loading device adopts a multi-arm linkage mode, so that when the main shaft of the rotary arm is driven to rotate, all the rotary arms can be sequentially driven to be linked, the power transmission efficiency is improved, and meanwhile, the structural strength design is facilitated; compared with a scissor type lifting mode in the prior art, most of the power of the device can be used for doing work in the vertical direction; in addition, compared with the vertical lifting in the prior art, the arrangement is also beneficial to reducing the initial height of the lifting unit under the same lifting condition.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an aircraft cargo transportation mounting device according to an embodiment of the present invention;

FIG. 2 is a front view of an aircraft cargo transport mounting arrangement provided in accordance with an embodiment of the present invention;

fig. 3 is a second schematic structural view of the aircraft cargo transportation mounting device according to the embodiment of the invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a top view of a portion of an aircraft cargo transport mounting device provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a connection between a lift platform and a platform restraint mechanism of an aircraft cargo transport and loading apparatus according to an embodiment of the present invention;

fig. 7 is a third schematic structural view of the aircraft cargo transportation mounting device according to the embodiment of the present invention, wherein the lifting platform, the platform restraining mechanism, and the lifting unit are partially not shown;

fig. 8 is a partially enlarged view of the portion B shown in fig. 7.

Icon:

100-a loading platform;

200-lifting platform; 210-a lifting frame; 211-frame channel guide; 212-handle card slot;

300-a rotary lifting mechanism; 311-driving a swing arm; 312-driving the swing arm spindle; 313-drive slewing arm countershaft; 321-transition slewing arms; 322-transition slewing arm main shaft; 323-transition slewing arm countershaft; 331-a main swivel arm; 332-main slewing arm main shaft; 333-main revolving arm auxiliary shaft; 3211-transition swivel arm guide groove; 3311-main swivel arm guide;

400-a lifting drive mechanism; 411-a first gear shaft; 412-a second gear shaft; 413-a third gear shaft; 421-a driving wheel; 422-driven wheel; 423-a conveyor; 431-a shift gear; 432-shift lever; 441-worm; 442-a lift motor; 443-a manual rocker; 444-a first bevel gear; 445-second bevel gear; 4141-primary gear; 4142-a drive gear; 4151-first gearwheel; 4152-a first pinion; 4153-heavy duty gear; 4154-light duty gear; 4161-second gearwheel; 4162-a second pinion; 4321-card slot;

510-tensioning handle; 520-a tension adjusting block; 530-a chain guide pulley; 540-restraint chains; 550-a first spring; 560-a second spring;

611-a travelling wheel; 612-a travel wheel support; 613-connecting plate; 614-guide rod;

711-steering gear ring; 712-a steering gear; 721-a steering wheel; 722-a steering wheel mount; 723-steering wheel rim; 724-steering wheel gear; 725-steering flexible shaft;

810-a drive wheel; 820-drive wheel support plate; 830-a travel motor; 840-a battery pack; 821-U-shaped clamping groove; 822-connecting pin; 823-fixed pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides an aircraft cargo transportation mounting device, as shown in fig. 1 to 3, the aircraft cargo transportation mounting device includes a loading platform 100, a lifting platform 200, a lifting unit and a traveling unit; the lifting unit is connected between the bearing platform 100 and the lifting platform 200; the traveling unit is arranged on the bearing platform 100; the lifting unit comprises two groups of rotary lifting mechanisms 300 and lifting driving mechanisms 400, wherein the two groups of rotary lifting mechanisms 300 support the lifting platform 200 together; the rotary lifting mechanism 300 comprises a driving rotary arm 311, a transition rotary arm 321 and a main rotary arm 331, and the lower ends of the driving rotary arm 311, the transition rotary arm 321 and the main rotary arm 331 are respectively hinged with the bearing platform 100 through a driving rotary arm main shaft 312, a transition rotary arm main shaft 322 and a main rotary arm main shaft 332; the upper end of the driving rotary arm 311 is hinged with the transition rotary arm 321 through a driving rotary arm auxiliary shaft 313, and the driving rotary arm auxiliary shaft 313 is connected with the transition rotary arm 321 in a sliding manner; the upper end of the transition rotary arm 321 is hinged with the main rotary arm 331 through a transition rotary arm auxiliary shaft 323, and the transition rotary arm auxiliary shaft 323 is connected with the main rotary arm 331 in a sliding manner; the upper end of the main rotary arm 331 is hinged with the lifting platform 200 through a main rotary arm auxiliary shaft 333, and the main rotary arm auxiliary shaft 333 is connected with the lifting platform 200 in a sliding way; the two sets of driving swivel arm spindles 312 are in transmission connection with the lifting driving mechanism 400, and are used for enabling the lifting platform 200 to approach or depart from the loading platform 100.

Through the above arrangement, when the lifting driving mechanism 400 drives the two sets of driving revolving arm spindles 312 to rotate, the driving revolving arm 311, the transition revolving arm 321, and the main revolving arm 331 respectively rotate around the driving revolving arm spindles 312, the transition revolving arm spindles 322, and the main revolving arm spindles 332, so that the driving revolving arm 311, the transition revolving arm 321, and the main revolving arm 331 are linked, and further the lifting platform 200 is far away from (lifted up) or close to (lowered down) the loading platform 100.

In addition, in the aircraft cargo transportation and loading device provided by the embodiment, the lifting unit adopts a multi-arm linkage mode, so that when the main shaft 312 of the swing arm is driven to rotate, all the swing arms can be driven to be linked in sequence, and the power transmission efficiency is improved; meanwhile, the structural strength design is facilitated; compared with a scissor type lifting mode in the prior art, most of the power of the device can be used for doing work in the vertical direction; in addition, compared with the vertical lifting in the prior art, the arrangement is also beneficial to reducing the initial height of the lifting unit under the same lifting condition.

In this embodiment, the two sets of rotary elevating mechanisms 300 may take various forms.

1) In a first form:

the two groups of rotary lifting mechanisms 300 are respectively arranged at two ends of the bearing platform 100; in the group of rotary elevating mechanisms 300, the driving rotary arm 311 and the main rotary arm 331 are both one piece; the transitional rotating arm 321 is one or more pieces; the driving swing arm 311, one or more transition swing arms 321, and the main swing arm 331 are provided in this order.

In one embodiment of the present application, in the set of revolving and elevating mechanisms 300, the driving revolving arm 311, the transitional revolving arm 321, and the main revolving arm 331 are all one piece, and the driving revolving arm 311, the transitional revolving arm 321, and the main revolving arm 331 are all disposed in a "U" shape in cross section in the length direction. Wherein, in the non-lifting state, the opening direction of the U-shape of the main revolving arm 331 faces the transitional revolving arm 321; the opening direction of the U-shaped transition rotary arm 321 faces the drive rotary arm 311; the direction of the U-shaped opening of the rotary arm 311 is driven to face the ground; the "U" shaped openings of all swivel arms point together to the same side during lifting.

2) In a second form:

the two groups of rotary lifting mechanisms 300 are respectively arranged at two ends of the bearing platform 100; in the group of revolving lift mechanisms 300, two driving revolving arms 311 and two main revolving arms 331 are provided; the number of the transition revolving arms 321 is two or a multiple of two; the two driving rotary arms 311 are respectively connected with a driving rotary arm main shaft 312 and a driving rotary arm auxiliary shaft 313 to form a driving rotary arm frame structure; two transition revolving arms 321 which are arranged oppositely are respectively connected with a transition revolving arm main shaft 322 and a transition revolving arm auxiliary shaft 323 to form one or more transition revolving arm frame structures; the two main revolving arms 331 are respectively connected with the main revolving arm main shaft 332 and the main revolving arm auxiliary shaft 333 to form a main revolving arm frame structure; the driving revolving arm frame structure, one or more pairs of transition revolving arm frame structures and the main revolving arm frame structure are arranged in sequence.

Illustratively, the transitional swivel arms 321 can be two, four, six, etc. In this embodiment, in the one-set swing lifting mechanism 300, there are two drive swing arms 311, two transition swing arms 321, and two main swing arms 331.

Optionally, the frame structure may be a rectangular frame structure; of course, a "U" shaped frame structure is also possible.

Further, the loading platform 100 has a central position in the length direction; the lengths of the driving slewing arm frame structure, one or more pairs of transition slewing arm frame structures and the main slewing arm frame structure are sequentially increased; in the two groups of rotary lifting mechanisms, the upper ends of the two groups of main rotary arm frame structures are hinged with the lifting platform 200 across the central position to form a crossed arrangement (not shown in the drawing), and the arrangement can increase the lifting height of the lifting unit relative to the latter under the same condition; alternatively, in the two sets of rotary lifting mechanisms, the upper ends of the two sets of main rotary arm frame structures are hinged to two sides of the central position of the loading platform 100 (see fig. 2 or fig. 3 in particular).

Referring to fig. 3, a transition rotary arm guide groove 3211 is formed on the transition rotary arm 321, a main rotary arm guide groove 3311 is formed on the main rotary arm 331, and a frame guide groove is formed on the lifting platform 200; two ends of the driving rotary arm auxiliary shaft 313 are connected with the transition rotary arm guide groove 3211 in a sliding manner, two ends of the driving rotary arm auxiliary shaft 313 are both sleeved with driving rotary arm auxiliary shaft bearings, and the driving rotary arm auxiliary shaft bearings are abutted against one side of the transition rotary arm 321; two ends of the transition rotary arm auxiliary shaft 323 are connected with the main rotary arm guide groove 3311 in a sliding manner, two ends of the transition rotary arm auxiliary shaft 323 are both sleeved with transition rotary arm auxiliary shaft bearings, and the transition rotary arm auxiliary shaft bearings are abutted against one side of the main rotary arm 331; two ends of the main rotary arm auxiliary shaft 333 are connected with the frame guide groove in a sliding mode, two ends of the main rotary arm auxiliary shaft 333 are both sleeved with main rotary arm auxiliary shaft bearings, and the main rotary arm auxiliary shaft bearings are abutted to one side of the lifting platform 200.

The connection between the driving pivot arm auxiliary shaft 313 and the transition pivot arm guide groove 3211 is taken as an example. Specifically, the cross section of the transition swivel arm guide groove 3211 is "L" shaped, and in the transition swivel arm guide groove 3211 that is arranged oppositely, the plane where the short side of the "L" shaped cross section is located or the plane where the long side is located are also arranged oppositely, wherein the transition swivel arm guide groove 3211 is opened to the plane where the long side of the "L" shaped cross section is located or the plane where the short side is located.

When the transitional rotation arm 321 is a plurality of pairs, the lengths of the plurality of pairs of transitional rotation arms 321 increase in sequence in a direction away from the driving rotation arm 311. When the transitional rotation arm 321 is a plurality of pairs, the lengths of the plurality of pairs of transitional rotation arms 321 increase in sequence in a direction away from the driving rotation arm 311. The connection mode of the multiple pairs of transitional rotation arms 321 refers to the connection mode of the driving rotation arm 311 and the transitional rotation arm 321, or the connection mode of the transitional rotation arm 321 and the main rotation arm 331, which is not described herein again.

The working process of the rotary lifting mechanism 300 is specifically as follows:

the auxiliary shaft bearing of the driving rotary arm lifts the lower side of the transition rotary arm 321, the auxiliary shaft bearing of the transition rotary arm lifts the lower side of the main rotary arm 331, and the auxiliary shaft bearing of the main rotary arm lifts the lifting platform 200, so that the driving rotary arm 311 is driven by the lifting driving mechanism 400 to gradually change from a nearly horizontal state to a vertical state, the transition rotary arm 321 and the main rotary arm 331 are sequentially forced to perform the same action, and the lifting platform 200 is lifted under the lifting of the auxiliary shaft bearing of the main rotary arm; the lifting platform 200 is lowered by changing the rotation direction of the lifting driving mechanism 400; in the descending process of the lifting platform 200, the rotation arms are in sliding fit with the corresponding guide grooves, so that power is provided for the descending motion of the lifting platform 200, and meanwhile, constraint is provided.

The rotary elevating mechanism 300 has been described above, and the elevating driving mechanism 400 is described below.

The elevation drive mechanism 400 in this embodiment may take various forms, for example, a gear drive form, a hydraulic drive form, and the like. Wherein, adopt the hydraulic drive form, can make hydraulic pressure mechanism direct drive main revolving arm 331 move, compare with the form that adopts gear drive in this embodiment, the hydraulic drive form can simplify the structure of lift actuating mechanism 400 greatly, also can reduce aircraft cargo transportation carry the whole volume of device relatively.

In this embodiment, a gear driving manner is selected, and the lifting driving mechanism 400 includes a transmission assembly, a gear speed regulating assembly, and a power assembly; the transmission assembly comprises a driving wheel 421, a driven wheel 422 and a transmission member 423 connected with the driving wheel 421 and the driven wheel 422, wherein the driving wheel 421 and the driven wheel 422 are pivoted on the bearing platform 100; the gear speed regulating assembly is arranged on the bearing platform 100 and comprises a speed reducing wheel set, a direct drive wheel set and a gear shifting wheel set; the driving wheel 421 is connected to the speed reduction wheel set and the direct drive wheel set, and the driven wheel 422 is mounted on the driving slewing arm spindle 312; the power assembly is in transmission connection with the gear shifting wheel set and drives the gear shifting wheel set to move so as to enable the gear shifting wheel set to be in transmission connection with the speed reducing wheel set or the direct drive wheel set, and therefore the rotating speed of the main shaft 312 of the driving slewing arm can be adjusted; a self-locking structure capable of self-locking in forward and reverse directions is arranged between the power assembly and the gear shifting wheel set.

In a specific embodiment of the lifting driving mechanism 400, referring to fig. 4 and 5, the lifting driving mechanism 400 includes a first gear shaft 411, a second gear shaft 412, a third gear shaft 413, a primary reduction gear set, a secondary reduction gear set, and a tertiary reduction gear set; the first gear shaft 411, the second gear shaft 412 and the third gear shaft 413 are all fixedly connected to the bearing platform 100; the primary reduction gear set comprises a primary gear 4141 and a driving gear 4142, and the primary gear 4141 and the driving gear 4142 are both rotatably sleeved on the first gear shaft 411; the two-stage reduction gear set comprises a first gearwheel 4151, a first pinion 4152, a heavy-duty gear 4153 and a light-duty gear 4154, wherein the first gearwheel 4151 and the first pinion 4152 are fixedly connected and are both rotatably sleeved on the second gear shaft 412; the heavy-duty gear 4153 is fixedly connected with the light-duty gear 4154 through a connecting shaft tube, and the heavy-duty gear 4153, the light-duty gear 4154 and the connecting shaft tube are rotatably sleeved on the second gear shaft 412; the third reduction gear set comprises a second gearwheel 4161 and a second pinion 4162 which are fixedly connected and are rotatably sleeved on the third gear shaft 413; the primary gear 4141 is meshed with the first large gear 4151; the first pinion gear 4152 meshes with the second bull gear 4161; the second pinion gear 4162 meshes with the heavy-duty gear 4153; the transmission assembly comprises a driving wheel 421, a driven wheel 422 and a transmission member 423 connected with the driving wheel 421 and the driven wheel 422, the driving wheel 421 and the driven wheel 422 are both provided, and the two driving wheels 421 are both fixedly sleeved on the connecting shaft tube; the two driven wheels 422 are respectively fixedly sleeved on the driving rotary arm main shaft 312 of the first rotary arm group and the driving rotary arm main shaft 312 of the second rotary arm group; the gear shifting assembly comprises a gear shifting gear 431 and a gear shifting rod 432, the gear shifting gear 431 is rotatably sleeved on the first gear shaft 411 and is in sliding connection with the driving gear 4142, the gear shifting rod 432 is installed on the bearing platform 100, and the gear shifting rod 432 can push the gear shifting gear 431 and the first-stage gear 4141 to move along the axis of the first gear shaft 411, so that the gear shifting gear 431 is meshed with the light-load gear 4154, or the first-stage gear 4141 is meshed with the first large gear 4151; the power assembly is in driving connection with the drive gear 4142.

In one embodiment of the present application, the diameter of the addendum circle of the primary gear 4141 is smaller than the first large gear 4151; the diameters of addendum circles of the first gearwheel 4151, the second gearwheel 4161 and the bull gear 4153 can be equal; the addendum circle diameters of the first pinion 4152 and the second pinion 4162 may be equal; the tip circle diameter of the light-load gear 4154 is between the first large gear 4151 and the first small gear 4152.

In some embodiments, as shown in fig. 4 and 5, a spline sleeve is coaxially disposed on the driving gear 4142, and the spline sleeve is rotatably sleeved on the first gear shaft 411; one end of the gear shifting gear 431 is of an external spline structure, the other end of the gear shifting gear 431 is of a gear structure, and the gear structure is provided with an internal spline hole; the inner spline hole is in inserting fit with the spline sleeve, and the outer spline structure is in inserting fit with the primary gear; one end of the shift lever 432 is provided with a slot 4321, and the other end is inserted into the bearing platform 100; portions of the gear structure are located within the pockets 4321.

Referring to fig. 4 and 5, when the shift lever 432 is pushed backward, the engaging slot 4321 of the shift lever 432 pushes the gear structure of the shift gear 431 to move backward in the axial direction until the first gear 4141 is engaged with the first gearwheel 4151, and the power assembly is started, and the power assembly drives the driving gear 4142, the shift gear 431, the first gear 4141, the first gearwheel 4151, the first pinion 4152, the second gearwheel 4161, the second pinion 4162, the heavy gear 4153, the light gear 4154, the driving wheel 421 and the driven wheel 422 to rotate, so as to drive the driving slewing arm spindle 312 to rotate. In this mode, the drive turret arm spindle 312 may rotate at a slower speed.

Conversely, when the shift lever 432 is pulled forward, the notch 4321 of the shift lever 432 pushes the gear structure of the shift gear 431 to move forward along the axial direction, at this time, the gear structure of the shift gear 431 is engaged with the light-load gear 4154, and the light-load gear 4154 directly drives the driving wheel 421 and the driven wheel 422 to rotate, so as to drive the driving rotation arm spindle 312 to rotate. In this mode, the drive swivel arm spindle 312 can rotate at a higher speed.

Further, the drive gear 4142 employs a worm gear; the power assembly comprises an automatic driving module and/or a manual driving module.

Specifically, the power assembly includes the following three modes: 1) an automatic driving module; 2) a manual driving module; 3) the automatic driving module and the manual driving module.

The present embodiment selects the mode 3). Specifically, referring to fig. 4 and 5, the automatic driving module includes a worm 441 engaged with the worm wheel and a lifting motor 442 in transmission connection with the worm 441, and the lifting motor 442 is mounted on the mounting platform 100; the manual driving module comprises a manual rocker 443, a first bevel gear 444 fixedly connected to one end of the manual rocker 443, and a second bevel gear 445 fixedly connected to the worm 441, wherein the first bevel gear 444 is meshed with the second bevel gear 445; the manual rocker 443 is mounted to the mounting platform 100.

Through the arrangement of the worm 441 and the worm wheel structure, the lifting platform 200 can be kept at any height in the lifting process by utilizing the self-locking characteristics of the worm 441 and the worm wheel structure.

The lift drive mechanism 400 has been described in detail above, followed by a detailed description of the lift platform 200.

Referring to fig. 6, the lifting platform 200 includes a lifting frame 210, and two sets of frame guide slots 211 are formed on the lifting frame; each group of frame guide grooves 211 has two frame guide grooves, and the two frame guide grooves 211 are arranged on two sides of the lifting frame 210; both ends of the main rotary arm auxiliary shaft 333 are slidably connected with a set of frame guide grooves 211; of the two sets of frame guide grooves 211, the frame guide grooves 211 located on the same side are disposed at intervals or are disposed in communication.

Referring to fig. 6, two sets of platform constraining mechanisms are disposed on the lifting frame 210; the platform restraining mechanism comprises a restraining cable chain 540, a cable chain guide wheel 530 and a tension spring, wherein the cable chain guide wheel 530 is arranged at two ends of the lifting frame, two ends of the restraining cable chain 540 are respectively connected with the two main revolving arm auxiliary shafts 333, and a group of restraining cable chains 540 are wound through the cable chain guide wheel 530 arranged at one end of the lifting frame; the platform constraint mechanism further comprises a tensioning handle 510 and a tensioning adjusting block 520, the tensioning adjusting block 520 is rotatably connected with the lifting frame, one end of the tensioning handle 510 is connected with the tensioning adjusting block 520, and the other end of the tensioning handle is matched with a handle clamping groove 212 arranged on the lifting frame; the tension adjustment block 520 is also connected to the chain guide pulley 530.

Further, a handle clamping groove 212 is formed in the lifting platform 200, and the width of the upper portion of the handle clamping groove 212 is larger than that of the lower portion; the corresponding end of the tensioning handle 510 is clamped with the upper part of the handle clamping groove 212 and can horizontally swing to be separated from the upper part of the handle clamping groove 212; the tensioning handle 510 can be disengaged by the lower portion of the handle catch 212 by a downward force.

During specific operation, the driving end of the tensioning handle 510 can be swung in the horizontal direction to be separated from the upper portion of the handle clamping groove 212, the corresponding end of the tensioning handle 510 is pulled downwards to be separated from the lower portion of the handle clamping groove 212, then the corresponding end of the tensioning handle 510 is swung horizontally to release the tensioning adjusting block 520, and the restraining cable chain 540 is loosened.

With continued reference to fig. 6, the tensioning springs include a first spring 550 and a second spring 560; wherein, the first spring 550 is arranged between the head end of a restraint cable 540 and a main revolving arm auxiliary shaft 333; a second spring 560 is provided between the head end of the other restraint chain 540 and the other main slewing arm countershaft 333.

The working principle of the platform constraint mechanism is as follows: the amount of movement of one end of the restraint cable 540 with one of the primary swing arm secondary shafts 333 is equal to the amount of movement of the other end of the restraint cable 540 with the other set of primary swing arm secondary shafts 333. When one end of the restraining cable 540 moves along with one of the main turning arm secondary shafts 333, a margin appears around the restraining cable 540 passing through the cable guide pulley 530, and the margin exactly compensates for the length of the cable required by the other set of main turning arm secondary shafts 333 when moving relatively away from the lift platform 200.

In summary, the lifting of the lifting frame 210 is driven by a plurality of swing arms, and the movement of the swing arms is restricted by the lifting driving mechanism 400. When the lifting frame 210 is lifted or stopped at any height, if an external force forces the lifting frame 210 to move forward and backward, the movement of the two main revolving arm auxiliary shafts 333 is restricted by the lifting driving mechanism 400, and the two ends of the restricting cable chain 540 are respectively connected with the main revolving arm auxiliary shafts 333 at the two sides and wound around the cable chain guide wheels 530 arranged at the two ends of the lifting frame 210, so that the external force cannot force the lifting frame 210 to move. Therefore, during the lifting process, the two main rotary arm auxiliary shafts 333 can be driven by the main rotary arms 331 to move in the frame guide grooves 211 in order, but the front and rear central positions of the lifting frame 210 cannot move freely relative to the main rotary arm auxiliary shafts 333 due to the platform restraining mechanism.

The platform restraint mechanism comprises a tensioning handle 510, a tensioning adjusting block 520, a cable chain guide wheel 530, a restraint cable chain 540, a tensioning spring and a handle clamping groove 212, so that the restraint cable chain 540 is properly tensioned, and the main rotary arm auxiliary shaft 333 smoothly moves in the frame guide groove 211; the tensioning handle 510 is operated to release the tensioning adjusting block 520, so that the restraining cable 540 is loosened, and the lifting frame 210 has a small movement space, thereby facilitating the longitudinal fine adjustment during the hanging operation.

When the lifting frame 210 operates in no-load operation, the shifting rod 432 is operated, and the common gear at the other end of the shifting gear 431 is meshed with the light-load gear 4154; the manual rocker 443 is operated to adjust the height of the lifting frame 210 in a fine manner during mounting operation, so that the worm 441 and the worm wheel structure are arranged, and the lifting frame 210 can be kept at any height during lifting by utilizing the self-locking characteristic of the manual rocker.

The lift platform 200 has been described in detail above, followed by a detailed description of the travel unit.

The loading platform 100 includes a loading frame; the traveling unit includes a traveling wheel 611 and a driving wheel 810; the traveling wheels 611 are two groups, each group of the traveling wheels 611 comprises at least two traveling wheels 611, and the two groups of the traveling wheels 611 are respectively and rotatably connected to two ends of the bearing frame; the driving wheel 810 is rotatably connected to the bearing frame, and the driving wheel 810 is located at one end of the bearing frame, and one group of the traveling wheels 611 is located between the other group of the traveling wheels 611 and the driving wheel 810; a driving wheel 810 and a set of running wheels 611 adjacent thereto, one of which is attached to the ground and the other of which is detached from the ground.

Next, the traveling unit will be specifically described.

The traveling unit further includes a traveling wheel group including a traveling wheel bracket 612, a connection plate 613, and a guide rod 614; the traveling wheels 611 are rotatably connected to the traveling wheel bracket 612 through traveling wheel shafts; the connecting plate 613 is fixedly connected to the mounting platform 100; one end of the guide rod 614 is fixedly connected to the connecting plate 613, and the other end is rotatably connected to the traveling wheel bracket 612; four travel wheels 611 are pivotally attached to the four ends of the mounting platform 100.

Specifically, a steering tapered bearing is arranged between the traveling wheel bracket 612 and the guide rod 614, the inner diameter of the steering tapered bearing is fixedly connected with the guide rod 614, and the outer diameter of the steering tapered bearing is fixedly connected with the traveling wheel bracket 612.

The traveling unit further comprises two groups of steering mechanisms; the steering mechanism comprises a steering component and a direction control component; each group of the traveling wheels 611 includes two traveling wheels 611, the two traveling wheels 611 located at the same end respectively correspond to one group of the steering assemblies, and the two traveling wheels 611 share one group of the direction control assembly; the steering assembly includes a steering ring gear 711 and a steering gear 712; the steering gear ring 711 is fixedly connected to the traveling wheel bracket 612, and the steering gear 712 is rotatably connected to the connecting plate 613 and engaged with the steering gear ring 711; the steering control assembly comprises a steering wheel 721, a steering wheel seat 722, a steering wheel toothed ring 723 and a steering wheel gear 724; the steering wheel 721 is rotatably connected to the steering wheel seat 722 through a steering wheel shaft, and the steering wheel seat 722 is installed on the mounting platform 100; the steering wheel gear ring 723 is rotatably sleeved on the steering wheel shaft, and the steering wheel gear 724 is rotatably connected to the steering wheel seat 722 and meshed with the steering wheel gear ring 723; two steering wheel gears 724 are provided, and a steering flexible shaft 725 is respectively connected between the steering gear 712 corresponding to the two traveling wheels 611 and the two steering wheel gears 724.

The travel unit further includes a drive mechanism; the driving mechanism includes a driving wheel support plate 820, a differential axle, a traveling motor 830, a brake, and a battery pack 840; the number of the driving wheels 810 is two, the two driving wheels 810 are both pivoted to the driving wheel support plate 820, the driving wheel support plate 820 is rotatably connected to the bearing platform, and a locking structure for fixing the driving wheel support plate 820 and the bearing platform relatively is arranged between the driving wheel support plate 820 and the bearing platform; the driving wheel 810 is rotationally connected with the differential axle; the traveling motor 830 is connected with the differential axle; the brake is fixedly connected with the differential axle.

One embodiment of the locking structure is: as shown in fig. 8, a U-shaped slot 821 and a pin hole are provided on the driving wheel support plate 820; the U-shaped slot 821 is provided with a connecting pin 822 for allowing the driving wheel support plate 820 to rotate around the connecting pin, and after the driving wheel support plate 820 is rotated to a certain angle, the driving wheel support plate 820 and the bearing platform 100 are relatively fixed through a fixing pin 823.

Specifically, by adjusting the relative position of the driving wheel support plate 820 and the bearing platform 100, four traveling wheels 611 of two sets of traveling wheels 611 can be grounded together; alternatively, referring to fig. 7 and 8, after the driving wheel support plate 820 is rotated clockwise and fixed by the fixing pin 823, the two driving wheels 611 on the rear side can be lifted up and separated from the ground, and at this time, the two driving wheels 810 and the two driving wheels 611 on the front side land; the device can move forward or backward by operating the moving motor 830; the steering wheel 721 provided at the front end of the loading platform 100 is operated in cooperation with the driving wheel 810 having a differential axle function, so that the device performs steering during traveling.

After the device reaches the position close to the mounting position, referring to fig. 7 and 8, after the driving wheel support plate 820 is rotated clockwise and fixed by the fixing pin 823, the two driving wheels 810 can be separated from the ground; two traveling wheels 611 at the rear end of the bearing platform 100 contact the ground again, and the device is that four traveling wheels 611 land; by operating the steering wheel 721 on the front side and the rear side, the four traveling wheels 611 can achieve 90-degree steering; therefore, when the four traveling wheels 611 are adjusted to be parallel to the bearing platform 100, the device can realize longitudinal movement on the horizontal plane, when the four traveling wheels 611 are adjusted to be perpendicular to the bearing platform 100, the device can realize transverse linear movement on the horizontal plane, the four traveling wheels 611 at two ends of the bearing platform 100 are respectively adjusted, and the device can also realize movement at any inclination angle on the horizontal plane.

The operation flow of the aircraft cargo transportation and loading device is as follows:

an operator stands on pedals arranged at the front end and the rear end of the bearing platform 100 respectively to support the steering wheel 721 and other control facilities;

starting the travel motor 830 to cause the device to travel to near the mount point;

starting the lifting motor 442 to lift the lifting platform 200 to a height close to the hanging point;

switching the operation modes of the driving wheel 810 and the rear end traveling wheel 611;

adjusting the four traveling wheels 611 to be vertical to the bearing platform 100; fine adjustment of the transverse position of the lifting platform 200 is realized;

operating the tensioning handle 510 to release the tensioning adjusting block 520 to achieve fine adjustment of the longitudinal position of the lifting platform 200;

starting and operating the manual rocker 443 to realize fine adjustment of the height of the lifting platform 200; and completing the mounting operation until the requirement of the position calibration of the mounting point is 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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aircraft cargo transport mounting apparatus, comprising: the device comprises a bearing platform, a lifting unit and a traveling unit;

the lifting unit is connected between the bearing platform and the lifting platform; the traveling unit is arranged on the bearing platform;

the lifting unit comprises two groups of rotary lifting mechanisms and lifting driving mechanisms, and the two groups of rotary lifting mechanisms support the lifting platform together;

the rotary lifting mechanism comprises a driving rotary arm and a main rotary arm, and the lower ends of the driving rotary arm and the main rotary arm are respectively hinged with the bearing platform through a driving rotary arm main shaft and a main rotary arm main shaft;

the upper end of the driving rotary arm is hinged with the main rotary arm through a driving rotary arm auxiliary shaft, and the driving rotary arm auxiliary shaft is connected with the main rotary arm in a sliding mode; the upper end of the main rotary arm is hinged with the lifting platform through a main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft is connected with the lifting platform in a sliding manner;

and the two groups of main shafts of the driving rotary arms are in transmission connection with the lifting driving mechanism and are used for enabling the lifting platform to be close to or far away from the bearing platform.

2. An aircraft cargo transport mounting device according to claim 1, wherein two sets of said slewing elevating mechanisms are respectively provided at both ends of the loading platform;

in the group of rotary lifting mechanisms, the driving rotary arm and the main rotary arm are both one piece, and the driving rotary arm and the main rotary arm are sequentially arranged;

or in one group of the rotary lifting mechanisms, the number of the driving rotary arms and the number of the main rotary arms are two; the two driving rotary arms are respectively connected with the driving rotary arm main shaft and the driving rotary arm auxiliary shaft to form a driving rotary arm frame structure; the two main rotary arms are respectively connected with the main rotary arm main shaft and the main rotary arm auxiliary shaft to form a main rotary arm frame structure; the driving slewing arm frame structure and the main slewing arm frame structure are sequentially arranged.

3. The aircraft cargo transport mounting arrangement of claim 2, wherein the slewing lift mechanism further comprises a transitional slewing arm; the upper end of the driving rotary arm is hinged with the transition rotary arm through a driving rotary arm auxiliary shaft, and the driving rotary arm auxiliary shaft is connected with the transition rotary arm in a sliding mode; the upper end of the transition rotary arm is hinged with the main rotary arm through a transition rotary arm auxiliary shaft, and the transition rotary arm auxiliary shaft is connected with the main rotary arm in a sliding manner;

the transition rotary arm is one or more, and the driving rotary arm, one or more transition rotary arms and the main rotary arm are sequentially arranged; the number of the transition revolving arms is two or a multiple of two; the two oppositely arranged transition rotary arms are respectively connected with the transition rotary arm main shaft and the transition rotary arm auxiliary shaft to form one or more transition rotary arm frame structures; the driving rotary arm frame structure, one or more pairs of transition rotary arm frame structures and the main rotary arm frame structure are sequentially arranged.

4. An aircraft cargo transport mounting arrangement according to claim 3, wherein the loading platform has a central position in the length direction;

the lengths of the driving slewing arm frame structure, one or more pairs of transition slewing arm frame structures and the main slewing arm frame structure are sequentially increased;

in the two groups of rotary lifting mechanisms, the upper ends of the two groups of main rotary arm frame structures are hinged with the lifting platform across the central position to form a crossed arrangement; or in the two groups of rotary lifting mechanisms, the upper ends of the two groups of main rotary arm frame structures are hinged to two sides of the central position of the bearing platform.

5. The aircraft cargo transport mounting device of claim 3, wherein the transitional swing arm is provided with a transitional swing arm guide slot, the main swing arm is provided with a main swing arm guide slot, and the lifting platform is provided with a frame guide slot;

two ends of the auxiliary shaft of the driving rotary arm are connected with the guide groove of the transition rotary arm in a sliding mode, two ends of the auxiliary shaft of the driving rotary arm are sleeved with auxiliary shaft bearings of the driving rotary arm, and the auxiliary shaft bearings of the driving rotary arm are abutted to one side of the transition rotary arm;

two ends of the transition rotary arm auxiliary shaft are connected with the main rotary arm guide groove in a sliding mode, two ends of the transition rotary arm auxiliary shaft are sleeved with transition rotary arm auxiliary shaft bearings, and the transition rotary arm auxiliary shaft bearings are abutted to one side of the main rotary arm;

the two ends of the main rotary arm auxiliary shaft are connected with the frame guide groove in a sliding mode, main rotary arm auxiliary shaft bearings are sleeved at the two ends of the main rotary arm auxiliary shaft, and the main rotary arm auxiliary shaft bearings are abutted to one side of the lifting platform.

6. The aircraft cargo transport mounting arrangement of claim 1, wherein the elevating drive mechanism includes a transmission assembly, a gear assembly, and a power assembly;

the transmission assembly comprises a driving wheel, a driven wheel and a conveying piece connected with the driving wheel and the driven wheel, and the driving wheel and the driven wheel are both pivoted on the bearing platform;

the gear speed regulating assembly is arranged on the bearing platform and comprises a speed reducing wheel set, a direct drive wheel set and a gear shifting wheel set; the driving wheel is connected with the speed reduction wheel set and the direct drive wheel set, and the driven wheel is mounted on the main shaft of the driving slewing arm;

the power assembly is in transmission connection with the gear shifting wheel set, drives the gear shifting wheel set to move and is used for enabling the gear shifting wheel set to be in transmission connection with the speed reducing wheel set or the direct drive wheel set so as to realize rotation speed adjustment of the main shaft of the driving slewing arm;

and a self-locking structure capable of self-locking in forward and reverse directions is arranged between the power assembly and the gear shifting wheel set.

7. An aircraft cargo transport mounting device according to claim 1, wherein the lifting platform comprises a lifting frame, the lifting frame having two sets of frame guide slots; each group of frame guide grooves is provided with two frame guide grooves which are arranged on two sides of the lifting frame;

two ends of the auxiliary shaft of the main rotary arm are connected with a group of frame guide grooves in a sliding manner;

in the two groups of frame guide grooves, the frame guide grooves positioned on the same side are arranged at intervals or are communicated with each other.

8. The aircraft cargo transport mounting device of claim 7, wherein two sets of platform restraint mechanisms are provided on the lifting frame;

the platform restraint mechanism comprises restraint cable chains, cable chain guide wheels and tension springs, the cable chain guide wheels are arranged at two ends of the lifting frame, two ends of the restraint cable chains are respectively connected with the two main revolving arm auxiliary shafts, and one group of the restraint cable chains are wound around the cable chain guide wheels arranged at one end of the lifting frame;

the platform restraint mechanism further comprises a tensioning handle and a tensioning adjusting block, the tensioning adjusting block is rotatably connected with the lifting frame, one end of the tensioning handle is connected with the tensioning adjusting block, and the other end of the tensioning handle is matched with a handle clamping groove formed in the lifting frame; the tensioning adjusting block is simultaneously connected with the cable chain guide wheel.

9. The aircraft cargo transport mounting arrangement of claim 1, wherein the loading platform includes a loading frame;

the traveling unit comprises a traveling wheel and a driving wheel;

the two groups of the traveling wheels are arranged, each group of the traveling wheels comprises at least two traveling wheels, and the two groups of the traveling wheels are respectively and rotatably connected to the two ends of the bearing frame;

the driving wheel is rotationally connected with the bearing frame and is positioned at one end of the bearing frame, and one group of the traveling wheels is positioned between the other group of the traveling wheels and the driving wheel;

the driving wheel and a group of the travelling wheels adjacent to the driving wheel, one of the driving wheel and the travelling wheel is attached to the ground, and the other one is separated from the ground.

10. The aircraft cargo transport mounting arrangement of claim 9, wherein the travel unit further comprises two sets of steering mechanisms;

the steering mechanism comprises a steering assembly and a direction control assembly; each group of the traveling wheels comprises two traveling wheels, the two traveling wheels at the same end respectively correspond to one group of the steering assemblies, and the two traveling wheels share one group of the direction control assemblies;

the steering assembly comprises a steering gear ring and a steering gear; the steering gear ring is fixedly connected with the travelling wheel, and the steering gear is rotationally connected with the bearing frame and meshed with the steering gear ring and is used for driving the travelling wheel to steer;

the direction control assembly comprises a steering wheel, a steering wheel seat, a steering wheel toothed ring and a steering wheel gear; the steering wheel is rotationally connected to the steering wheel seat through a steering wheel shaft, and the steering wheel seat is mounted on the bearing platform; the steering wheel gear ring is rotatably sleeved on the steering wheel shaft, and the steering wheel gear is rotatably connected to the steering wheel seat and meshed with the steering wheel gear ring; the steering wheel gear is two, and a steering flexible shaft is connected between the steering gear corresponding to the two traveling wheels and the two steering wheel gears respectively.