CN109625055A - Automatic loading and unloading article foldable multifunctional power-assisted trolley - Google Patents
Automatic loading and unloading article foldable multifunctional power-assisted trolley Download PDFInfo
- Publication number
- CN109625055A CN109625055A CN201910133401.7A CN201910133401A CN109625055A CN 109625055 A CN109625055 A CN 109625055A CN 201910133401 A CN201910133401 A CN 201910133401A CN 109625055 A CN109625055 A CN 109625055A
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- Prior art keywords
- pedestal
- carrying platform
- handle
- automatic loading
- guide rail
- Prior art date
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000013016 damping Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2203/00—Grasping, holding, supporting the objects
- B62B2203/70—Comprising means for facilitating loading or unloading
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention discloses automatic loading and unloading article foldable multifunctional power-assisted trolleies, including pedestal, the lower section of the pedestal is equipped with the wheel of strap brake, the top of the pedestal is equipped with assist type Qu Wu mechanism, assist type Qu Wu mechanism includes carrying platform, jack plate and handguard, the carrying platform is equipped with multiple first roller bearings, the jack plate is located at the front end of carrying platform, overturning motor is equipped between the jack plate and carrying platform, the jack plate is equipped with multiple second roller bearings, the two sides of the carrying platform are respectively equipped with a lead screw motor, the lead screw motor is connected with guide rail, the front end of the guide rail is equipped with auxiliary handguard.The present invention can both help the elderly to carry article, can also carry out stored collapsed, folding effect is good, occupies little space after folding.
Description
Technical field
The present invention relates to a kind of power-assisted trolleies, and in particular to automatic loading and unloading article foldable multifunctional power-assisted trolley.
Background technique
According to State Statistics Bureau's statistical data, China's Mainland total population in 2017 is 1,390,080,000 people, wherein 65 one full year of life and
Above 158,310,000 people of population, accounts for the 11.4% of total population.The aging degree of Chinese population is accelerating to deepen." new era product
Cope with aging of population development report (2018) in pole " it is that China's stem responds actively aging of population development report, the report of this part
China is fully demonstrated increasingly to pay attention to the living standard of the elderly.It is the theme with " setting sun is warmed in wisdom endowment ", it is old from solving
Year people's life requirement, the angle for improving life of elderly person quality are set out, we are the elderly for legs and feet inconvenience in daily life
It has difficulties this phenomenon bending over to carry thing, proposes our product design.
Hand-cart for shopping used in the elderly is main on the market at present are as follows: is suitble to general house (light), goes out electronic farther out
Trolley, the design of present hand-cart for shopping can be described as many kinds of, but with improvement of living standard, the elderly is to shopping cart
Demand also shows diversified tendency, and past more single usage mode is no longer satisfied present people life style
Diversity requirement, the exploitation design and research of new product, increasingly shows its value of life and market value.
With the development of the society, old shopping cart has more and more been come into the family life of people, the elderly is practised
Used trolley goes out shopping, and leisure is taken a walk, and the elderly's legs and feet waist is inconvenient, carries this process relative difficulty of article, passes
System hand-cart for shopping does not have auxiliary and carries this function of article.
Summary of the invention
To solve the above-mentioned problems in the prior art, the present invention provides automatic loading and unloading article foldable multifunctional power-assisteds
Trolley can be to stay in the elderly of building to go out shopping and bring great convenience to mitigate the burden of the elderly.
Technical scheme is as follows: automatic loading and unloading article foldable multifunctional power-assisted trolley, including pedestal, the pedestal
Lower section be equipped with the wheel of strap brake, the top of the pedestal is equipped with assist type Qu Wu mechanism, assist type Qu Wu mechanism packet
Carrying platform, jack plate and handguard are included, the carrying platform is equipped with multiple first roller bearings, and the jack plate is located at carrying platform
Front end, between the jack plate and carrying platform be equipped with overturning motor, the jack plate be equipped with multiple second roller bearings, it is described
The two sides of carrying platform are respectively equipped with a lead screw motor, and the lead screw motor is connected with guide rail, and the front end of the guide rail is equipped with auxiliary
Help handguard.
Further, the guide rail is divided to two sections of front and back, and the front end of the guide rail and the rear end thereof of guide rail connect, described to lead
The front end of rail is equipped with limit plate, and the limit plate is located at the outside of auxiliary handguard, and the junction of the guide rail and auxiliary handguard is set
There is damping spring.
Further, further include scissors-type lifting, the cunning mobile for idler wheel is included in the pedestal and carrying platform
Slot and hinge hole, the scissors-type lifting include folding rod, and the folding rod is located at the top of pedestal, the folding rod it is upper
Side is equipped with carrying platform, and the top and bottom of the folding rod are respectively equipped with a pair of of idler wheel, and the pedestal is equipped with electric pushrod,
One end of the electric pushrod is fixed on the base, and the other end of the electric pushrod is fixed on a connecting shaft below folding rod
On bar.
Further, the rear end of the pedestal is equipped with handle, and the lower end of the handle is equipped with a pair of of worm screw, the pedestal
Lower section is equipped with sleeve, is connected with universal driving shaft on the sleeve, the wheel of strap brake, the universal driving shaft are connected on the universal driving shaft
One end be equipped with worm gear, worm and worm wheel intermeshing.
Further, the two sides of the carrying platform are equipped with flexible railing, and the upper end of the flexible railing passes through railing top
Column is connected, and the front end of the carrying platform is equipped with side wall column, and the side wall column and carrying platform are rotatablely connected.
Further, the flexible railing is connect with carrying platform by threaded hole, and flexible railing is divided into upper and lower ends,
Upper end is railing upper end, and lower end is railing lower end.
Further, cloth is cased on the outside of the flexible railing.
Further, the rear end of the pedestal is equipped with handle, and the handle is equipped with handle shaft, and the handle shaft will
Handle and pedestal are hinged.
Further, the handle includes up knob and lower handle, and button, bullet built in the button are set on the up knob
Spring, the lower handle are equipped with limited bayonet, and the limited bayonet and button, which cooperate, to be connected.
Further, the front end of the carrying platform is equipped with hook, and the handle is stuck in hook.
The present invention can be stay in building the elderly go out shopping it is upper downstairs bring great convenience, can both help old age
People carries article, moreover it is possible to mitigate pressure when the elderly's stair activity, can also carry out stored collapsed, folding effect is good, folds
After occupy little space.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is structural schematic diagram of the invention；
Fig. 5 is the structural schematic diagram of jack plate；
Fig. 6 is the structural schematic diagram of lead screw motor；
Fig. 7 is the structural schematic diagram of handguard；
Fig. 8 is that trolley completes automatic loading weight flow chart；
Fig. 9 is the structural schematic diagram of fold mechanism of the present invention；
Figure 10 is the folded front view of the present invention；
Figure 11 is the folded bottom view of the present invention；
Figure 12 is folding flow chart of the invention；
Figure 13 is the structural schematic diagram of up knob；
Figure 14 is the structural schematic diagram of lower handle；
Figure 15 is the structural schematic diagram of the wheel of strap brake；
Figure 16 is the flow chart that the present invention places object；
In figure: 1- pedestal, 2- carrying platform, 3- stretch railing, 4- railing top pillar, 5- up knob, handle under 6-, 7- hook, 8-
Overturn motor, 9- electric pushrod, 10- folding rod, the wheel of 11- strap brake, 12- sleeve, 13- universal driving shaft, 14- worm gear, 15- snail
Bar, 16- lead screw motor, 17- jack plate, the first roller bearing of 18-, the second roller bearing of 19-, 20- guide rail, 21- assist handguard, 22- damping
Spring, 23- limit plate, 24- coupling rod, 25- side wall column, 26- limited bayonet, 27- button, 28- handle shaft, on 29- railing
End, 30- railing lower end.
Specific embodiment
Invention is described further below in conjunction with attached drawing:
As shown in Figure 1, automatic loading and unloading article foldable multifunctional power-assisted trolley, including pedestal 1, the lower section of the pedestal 1 are equipped with band
The top of the wheel 11 of brake, the pedestal 1 is equipped with assist type Qu Wu mechanism, and assist type Qu Wu mechanism includes carrying platform
2, jack plate 17 and handguard, the carrying platform 2 are equipped with multiple first roller bearings 18, and the jack plate 17 is located at carrying platform 2
Front end, between the jack plate 17 and carrying platform 2 be equipped with overturning motor 8, the jack plate 17 be equipped with it is multiple second rolling
Axis 19, the two sides of the carrying platform 2 are respectively equipped with a lead screw motor 16, and the front end of the lead screw motor 16 is connected with guide rail
20, the guide rail 20 is divided to two sections of front and back, and the front end of the guide rail 20 is connect with the rear end thereof of guide rail 20, before the guide rail 20
End is equipped with auxiliary handguard 21 and limit plate 23, and the limit plate 23 is located at the outside of auxiliary handguard 21, the guide rail 20 and auxiliary
The junction of handguard 21 is equipped with damping spring 22.
Such as taking shown in object flow chart for Fig. 8, powered when needing to take object by lithium battery for overturning motor 8, control is turned over
The forward and reverse of rotating motor 8, overturning motor 8 rotate forward drive jack plate 17 be clockwise to jack plate 17 just with ground phase
Agree with, while trolley two sides lead screw motor 16 works, and by screw-driven the guide rail 20 of two sides is stretched out, before two guide rails 20
Respectively there is an auxiliary handguard 21 at end respectively.Have built-in damping spring 22(as shown in Figure 7 in 20 front end of guide rail), when auxiliary handguard 21
When touching object during marching forward by guide rail 20, damping spring 22 makes that 21 direction guiding rail side of handguard is assisted to withdraw, guide rail
20 continue forward, and when assisting handguard 21 to leave object, auxiliary handguard 21 restores under the action of damping spring 22 to expansion shape
State is equipped with limit plate 23 in the outside of guide rail 20, and auxiliary handguard 21 can be limited between 0 ° -90 ° and rotate by limit plate 23, then
Lead screw motor 16 works, and guide rail 20 is withdrawn forward, pushes taken object to be moved in jack plate 17 by auxiliary handguard 21, works as institute
When object being taken to encounter trolley front end transmission device, the overturning motor 8 in jack plate 17 works, so that jack plate 17 is counterclockwise upwards
Rotation carry out withdrawal movement, while 17 in jack plate on the second roller bearing 19 rotate counterclockwise, the rotation of the second roller bearing 19 with rise
The upward recovery movement of weight plate 17 jointly sets the transmission of taken object on trolley, and the first roller bearing 18 on trolley is matched with the second roller bearing 19
It closes work and taken object is sent to the suitable position on the carrying platform 2 of trolley, jack plate 17 continues to withdraw upwards counterclockwise
Stop after a period of time, is retracted to the fitting of auxiliary handguard 21 and trolley two sides with rear rail 20, realizes that trolley assist type takes object function
Energy.Structure design is simple, easy to use.
As shown in 1-4 figure, the present invention includes scissors-type lifting, and the scissors-type lifting includes folding rod 10, described
Folding rod 10 is located at the top of pedestal 1, and the top of the folding rod 10 is equipped with carrying platform 2, the upper end of the folding rod 10 and
Lower end is respectively equipped with a pair of of idler wheel, and the pedestal 1 is equipped with electric pushrod 9, and one end of the electric pushrod 9 is fixed on pedestal 1
On, the other end of the electric pushrod 9 is fixed on a coupling rod 24 of 10 lower section of folding rod.In pedestal 1 and carrying platform 2
Include the sliding slot and hinge hole mobile for idler wheel.Folding rod 10 is that multilayer is in X-type machinery scissors lifting assembly, and linear motor is
Power mechanism, auxiliary body include built-in pulley, coupling rod and remaining connection standard component.The wherein mechanical scissors liter of same layer
Dropping bar group is to make it have revolute pair by middle part is hinged, and the mechanical scissors lifting assembly of adjacent two layers passes through linkwork
Carry out it is hinged, mechanical scissors bar group one end of bottommost carried out in the same way with pedestal it is hinged, the other end with it is interior
It sets idler wheel to be attached, built-in idler wheel may be implemented in horizontal movement in sliding slot.It can be by artificially controlling the work shape of linear motor
State controls lifter group regularly open and close movement to realize.Open and close movement between bar group can realize the steady liter of carrying platform
Drop movement.
As shown in figure 16, for the present invention when unloading cargo, the guide rail 20, which moves forward, reaches 16 end of lead screw motor position
When setting, the jack plate 17, which is clockwise to, mutually agrees with place's stopping with desktop, and first roller bearing 18 and the second roller bearing 19 are same
When rotate clockwise make unloading object be moved to desktop, by vehicle body scissors-type lifting make carrying platform 2 rise one section
Distance after, jack plate 17 counterclockwise upwards withdraw a period of time after stop, with rear rail 20 be retracted to auxiliary handguard 21 fitting with
Trolley two sides realize that trolley unloads the function of object carrier.
As shown in Figs 1-4, the present invention includes foldable column frame, and the two sides of the carrying platform 2 are equipped with flexible railing 3, institute
Flexible railing 3 to be stated to connect with carrying platform 2 by threaded hole, the upper end of the flexible railing 3 is connected by railing top pillar 4,
The flexible railing 3 divides for upper and lower ends, and the upper end is railing upper end 29, and lower end is railing lower end 30, the flexible railing 3
Outside is cased with cloth, and the front end of the carrying platform 2 is equipped with side wall column 25, and the side wall column 25 is rotatablely connected with carrying platform 2.
As shown in figure 9, the wheel 11 of handlebar and strap brake that linkage folds, the rear end of the pedestal 1 is equipped with handle,
The lower end of the handle is equipped with a pair of of worm screw 15, and the lower section of the pedestal 1 is equipped with sleeve 12, is connected with linkage on the sleeve 12
Axis 13, the wheel 11 of strap brake is connected on the universal driving shaft 13, and one end of the universal driving shaft 13 is equipped with worm gear 14, the worm screw
15 and worm gear 14 be intermeshed.It when depression of handle is folded, is driven by worm and gear multi-tooth meshing, the wheel of strap brake
Folding is also recovered in 1 lower end of pedestal to reduce occupied area (as shown in Figure 10 and Figure 11) by 11.
As shown in Fig. 1 and Figure 14, the rear end of the pedestal 1 is equipped with handle, and the handle is equipped with handle shaft 28, described
Handle shaft 28 is hinged by handle and pedestal 1, and the handle includes up knob 5 and lower handle 6, on the up knob 5
If button 27, spring built in the button 27, the lower handle 6 is equipped with limited bayonet 26, the limited bayonet 26 and button
27, which cooperate, connects；The front end of the carrying platform 2 is equipped with hook 7, and the handle is stuck in hook 7.Up knob 5 can be under
Upper and lower translation in the sleeve of handle 6, seven grades of limited bayonets 26 on lower handle 6 can be by the button 27 of up knob 5 in difference
Position is positioned.
Claims (10)
1. the lower section of automatic loading and unloading article foldable multifunctional power-assisted trolley, including pedestal (1), the pedestal (1) is equipped with strap brake
Wheel (11), it is characterised in that: the top of the pedestal (1) be equipped with assist type Qu Wu mechanism, assist type Qu Wu mechanism
Including carrying platform (2), guide rail (20), jack plate (17) and auxiliary handguard (21), the carrying platform (2) is equipped with multiple the
One roller bearing (18), the jack plate (17) are located at the front end of carrying platform (2), the jack plate (17) and carrying platform (2) it
Between be equipped with overturning motor (8), the jack plate (17) be equipped with multiple second roller bearings (19), the two sides of the carrying platform (2)
It is respectively equipped with a lead screw motor (16), the lead screw motor (16) is connected with guide rail (20), and the front end of the guide rail (20) is equipped with
It assists handguard (21).
2. automatic loading and unloading article foldable multifunctional power-assisted trolley as described in claim 1, it is characterised in that: the guide rail (20)
It is divided to two sections of front and back, the front end of the guide rail (20) is connect with the rear end thereof of guide rail (20), and the front end of the guide rail (20) is equipped with
Limit plate (23), the limit plate (23) are located at the outside of auxiliary handguard (21), the guide rail (20) and auxiliary handguard (21)
Junction is equipped with damping spring (22).
3. automatic loading and unloading article foldable multifunctional power-assisted trolley as described in claim 1, it is characterised in that: further include scissors liter
Include the sliding slot and hinge hole mobile for idler wheel, the scissor lift in descending mechanism, the pedestal (1) and carrying platform (2)
Mechanism includes folding rod (10), and the folding rod (10) is located at the top of pedestal (1), and the top of the folding rod (10), which is equipped with, holds
Carrying platform (2), the top and bottom of the folding rod (10) are respectively equipped with a pair of of idler wheel, and the pedestal (1) is equipped with electronic push away
One end of bar (9), the electric pushrod (9) is fixed on pedestal (1), and the other end of the electric pushrod (9) is fixed on folding
On a coupling rod (24) below bar (10).
4. automatic loading and unloading article foldable multifunctional power-assisted trolley as described in claim 1, it is characterised in that: the pedestal (1)
Rear end be equipped with handle, the lower end of the handle is equipped with a pair of of worm screw (15), and the lower section of the pedestal (1) is equipped with sleeve (12),
It is connected with universal driving shaft (13) on the sleeve (12), the wheel (11) of brake, the linkage is connected on the universal driving shaft (13)
One end of axis (13) is equipped with worm gear (14), the worm screw (15) and worm gear (14) intermeshing.
5. automatic loading and unloading article foldable multifunctional power-assisted trolley as described in claim 1, it is characterised in that: the carrying platform
(2) two sides are equipped with flexible railing (3), and the upper end of the flexible railing (3) is connected by railing top pillar (4), the carrying
The front end of platform (2) is equipped with side wall column (25), and the side wall column (25) and carrying platform (2) are rotatablely connected.
6. automatic loading and unloading article foldable multifunctional power-assisted trolley as claimed in claim 5, it is characterised in that: the flexible railing
(3) it is connect with carrying platform (2) by threaded hole, the flexible railing (3) is divided into upper and lower ends, and the upper end is railing upper end
(29), lower end is railing lower end (30).
7. automatic loading and unloading article foldable multifunctional power-assisted trolley as claimed in claim 5, it is characterised in that: the flexible railing
(3) cloth is cased on the outside of.
8. automatic loading and unloading article foldable multifunctional power-assisted trolley as described in claim 1, it is characterised in that: the pedestal (1)
Rear end be equipped with handle, the handle is equipped with handle shaft (28), and the handle shaft (28) is hinged by handle and pedestal (1)
Together.
9. automatic loading and unloading article foldable multifunctional power-assisted trolley as claimed in claim 8, it is characterised in that: the handle includes
Up knob (5) and lower handle (6) are set button (27) on the up knob (5), spring built in the button (27), described lower
Hand (6) is equipped with limited bayonet (26), and the limited bayonet (26) and button (27) cooperate and connect.
10. automatic loading and unloading article foldable multifunctional power-assisted trolley as claimed in claim 8, it is characterised in that: the carrying is flat
The front end of platform (2) is equipped with hook (7), and the handle is stuck in hook (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133401.7A CN109625055B (en) | 2019-02-22 | 2019-02-22 | Multifunctional folding power-assisted trolley capable of automatically loading and unloading articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133401.7A CN109625055B (en) | 2019-02-22 | 2019-02-22 | Multifunctional folding power-assisted trolley capable of automatically loading and unloading articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109625055A true CN109625055A (en) | 2019-04-16 |
| CN109625055B CN109625055B (en) | 2024-04-02 |
Family
ID=66065821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910133401.7A Active CN109625055B (en) | 2019-02-22 | 2019-02-22 | Multifunctional folding power-assisted trolley capable of automatically loading and unloading articles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109625055B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562312A (en) * | 2019-09-26 | 2019-12-13 | 扬州奥斯启冶矿机械有限公司 | Conveyer is used in production of gyro wheel cage shoe |
| CN111732031A (en) * | 2020-06-29 | 2020-10-02 | 西安京东天鸿科技有限公司 | Logistics transport vehicle, logistics unmanned aerial vehicle, automatic loading and unloading system and method |
| CN114228801A (en) * | 2021-11-12 | 2022-03-25 | 深圳供电局有限公司 | Running trolley |
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| CN110562312A (en) * | 2019-09-26 | 2019-12-13 | 扬州奥斯启冶矿机械有限公司 | Conveyer is used in production of gyro wheel cage shoe |
| CN111732031A (en) * | 2020-06-29 | 2020-10-02 | 西安京东天鸿科技有限公司 | Logistics transport vehicle, logistics unmanned aerial vehicle, automatic loading and unloading system and method |
| CN111732031B (en) * | 2020-06-29 | 2022-04-12 | 西安京东天鸿科技有限公司 | Logistics transport vehicle, logistics unmanned aerial vehicle, automatic loading and unloading system and method |
| CN114228801A (en) * | 2021-11-12 | 2022-03-25 | 深圳供电局有限公司 | Running trolley |
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