CN114947381B - Visual positioning walking conveying platform - Google Patents
Visual positioning walking conveying platform Download PDFInfo
- Publication number
- CN114947381B CN114947381B CN202210684460.5A CN202210684460A CN114947381B CN 114947381 B CN114947381 B CN 114947381B CN 202210684460 A CN202210684460 A CN 202210684460A CN 114947381 B CN114947381 B CN 114947381B
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- China
- Prior art keywords
- object placing
- plate
- placing plates
- electric push
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000000007 visual effect Effects 0.000 title claims abstract description 19
- 230000008093 supporting effect Effects 0.000 claims description 20
- 230000006698 induction Effects 0.000 claims description 10
- 235000013305 food Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B31/00—Service or tea tables, trolleys, or wagons
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
- A47B57/06—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of the shelves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
- B25J11/008—Manipulators for service tasks
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B31/00—Service or tea tables, trolleys, or wagons
- A47B2031/002—Catering trolleys
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B31/00—Service or tea tables, trolleys, or wagons
- A47B2031/003—Service or tea tables, trolleys, or wagons with drawers, trays or shelves
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Warehouses Or Storage Devices (AREA)
Abstract
The invention discloses a visual positioning walking conveying platform which comprises a movable chassis, a main body, an input screen, a visual positioning navigation device and a control box, wherein a storage rack is arranged in the main body, the storage rack comprises a fixed plate and at least two layers of object placing plates arranged below the fixed plate, the fixed plate is fixed at the top in the main body, a folding frame is arranged between the fixed plate and the object placing plates and between two adjacent object placing plates, the folding frame comprises an electric push rod and two pairs of support rods, the support rods are mutually intersected and hinged, the two pairs of support rods are supported between the object placing plates and an upper layer of fixed plate or the object placing plates, and the electric push rod is used for pushing and pulling the mutually intersected support rods to be overlapped or opened at the horizontal position, so that the object placing plates are lifted. When the robot is used, after a guest takes down an upper layer article, the lower layer article can be automatically lifted to the upper layer, the guest does not need to bend down, the service quality of the robot can be improved, and the customer experience is improved.
Description
Technical Field
The invention relates to a visual positioning walking conveying platform, which is a movable service robot with a plurality of carrying platforms.
Background
With the economic development, more and more service robots are being used for business. Currently, common commercial service robots are typically robots that transport specific items, such as meal delivery service robots. The service robot for meal delivery consists of a movable chassis and a plurality of layers of carrying platforms arranged on the chassis, and is also commonly provided with a display screen for inputting and a visual positioning navigation device for seeking paths and navigating. After the food delivery service robot conveys the food to the dining table, the customer takes the food on the platform off by hand. Therefore, as the carrying platform is of a multi-layer structure, guests need to bend down when taking down foods on the lower layer, the carrying platform is inconvenient to use, and the service quality is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a visual positioning walking conveying platform, and guests do not need to bend down when taking down objects.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a visual location walking transport platform, includes the removal chassis, locates the fuselage main part on this removal chassis, locates input screen, visual location navigation device and the control box at this fuselage main part top, be equipped with the supporter that is used for loading the article of waiting to transport in the fuselage main part, the input screen is used for the input the position that the article of waiting to transport needs to transport to, visual location navigation device is used for navigating in the transportation, the control box can be used to control the removal of removal chassis, and its improvement lies in:
the storage rack comprises a fixed plate and at least two layers of object placing plates arranged below the fixed plate, the main body of the storage rack is of a through-hole structure, the fixed plate is fixed at the top of the inside of the main body of the storage rack, folding frames are arranged between the fixed plate and the adjacent object placing plates and between the adjacent object placing plates, each folding frame comprises an electric push rod and two pairs of support rods, the same pair of support rods are intersected with each other and hinged at the intersection position, the two pairs of support rods are respectively close to two inner walls of the main body of the storage rack and are supported between the object placing plates and the fixed plate or the object placing plate on the upper layer, and the electric push rods are used for pushing and pulling the support rods intersected with each other to coincide or stretch at the horizontal position, so that the object placing plates are lifted; the control box is internally provided with a processor, the top of the storage plate is provided with an induction unit, the front end of the storage plate is provided with a reset key, the processor is respectively and electrically connected with the induction unit, the reset key, an input screen, a visual positioning navigation device and a mobile chassis, the induction unit is used for triggering the processor to control the electric push rod to drive the corresponding storage plate to ascend after detecting that an article on the storage plate is taken down, and the reset key is used for driving the corresponding storage plate to descend after being pressed by the electric push rod.
In at least one embodiment, the fixing plate and the object placing plate are in an inverted square groove shape, and two side walls of the fixing plate and the object placing plate close to the inner wall of the main body of the machine body are provided with side sliding grooves, wherein one side of the fixing plate and one side of the object placing plate at the lowest layer of the side sliding groove are provided with one side, the other object placing plates are provided with two sides, one end of the object placing plate close to the side sliding groove is provided with a through hole, two sides of the top of the object placing plate are provided with upper sliding grooves along the edges, and the bottoms of the upper sliding grooves and the side sliding grooves are communicated; the rack further comprises four connecting shafts, wherein the connecting shafts are vertically connected between the end parts of two supporting rods of different pairs, the end parts of the connecting shafts penetrate through and laterally protrude out of the supporting rods, the upper ends of the supporting rods are positioned in the upper layer of the fixing plate or the object placing plate, the lower ends of the supporting rods penetrate through the upper sliding grooves and then are inserted into the object placing plate, and the end parts of the two connecting shaft lateral protrusions of the same layer are respectively inserted into the through holes and slidably arranged in the side sliding grooves; the electric push rod is positioned inside the fixed plate or the object placing plate and is connected between two connecting shafts positioned at the lower end of the supporting rod.
In at least one embodiment, one end of the two side walls of the storage plate, which is far away from the through hole, is provided with a rotatable gear, both inner walls of the main body of the machine body are provided with guide grooves, the guide grooves extend downwards from the position of the fixing plate to the lowest position where the lowest storage plate can descend, the groove walls of the guide grooves, which are close to the outer part of the main body of the machine body, are in a rack shape, and the gear is positioned in the guide grooves and meshed with the groove walls of the guide grooves.
The invention has the advantages that: according to the object placing frame, the object placing plate capable of being lifted is arranged, after a guest takes down an upper layer object, the object on the lower layer can be automatically lifted to the upper layer, the guest does not need to bend down, the service quality of a robot can be improved, and the customer experience is improved.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a front view of the embodiment of fig. 1.
Fig. 3 is a top view of the embodiment of fig. 1.
Fig. 4 is a cross-sectional view taken along A-A in fig. 3 (with the shelf removed).
Fig. 5 is a schematic structural view of the rack of the embodiment of fig. 1.
Fig. 6 is a schematic connection diagram of the pull rod of the rack.
Fig. 7 is a schematic structural view of a storage plate of the storage rack.
Fig. 8 is a circuit block diagram of the embodiment of fig. 1.
The reference numerals in the figures are: 1. a mobile chassis; 2. a main body of the main body; 21. a guide groove; 3. a commodity shelf; 31. a storage plate; 32. a fixing plate; 33. a folding frame; 331. a support rod; 332. a connecting shaft; 333. an electric push rod; 334. a fixed block; 335. a sleeve; 34. an upper chute; 35. a side chute; 36. a gear; 37. a fence; 38. an induction unit; 39. a reset key; 310. a through hole; 4. an input screen; 5. a visual positioning navigation device; 6. a control box; 61. a processor; 62. a storage battery; 63. a memory.
Detailed Description
The present invention is described below with reference to the accompanying drawings, and the specific embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 1 to 3, the visual positioning walking conveying platform of the present embodiment includes a mobile chassis 1, a main body 2 disposed on the mobile chassis 1, an input screen 4 disposed on the top of the main body 2, a visual positioning navigation device 5 and a control box 6, and a rack 3 for loading articles to be conveyed is disposed in the main body 2. The input screen 4 is used for inputting the position to which the articles to be transported need to be transported, the visual positioning navigation device 5 is used for navigation in the transportation process, and the control box 6 can be used for controlling the movement of the mobile chassis 1. The movable chassis 1 is a wheeled movable chassis, and can meet the requirement of movement on a flat ground. The input screen 4 is a liquid crystal touch screen, so as to facilitate the input of relevant information. The visual positioning navigation device 5 performs optical processing on surrounding environment, firstly uses a camera to collect image information, and then uses a system built in the control box 6 to link the collected image information with the actual position of the whole equipment, thereby completing the navigation positioning function. The basic functions of the mobile chassis 1, the input screen 4, the visual positioning navigation device 5 and the control box 6 are all conventional technical means of servicing robots in the field.
As shown in fig. 5 to 8, the main improvement of the present invention is the structure of the shelf 3 and its control scheme. Specifically, the rack 3 includes a fixing plate 32 and at least two layers of placement plates 31 disposed below the fixing plate 32, the main body 2 is a hollow structure penetrating from front to back, the fixing plate 32 is fixed at the top inside the main body 2 (a plurality of mounting holes are formed in the top of the fixing plate 32, and the fixing plate 32 is screwed to the top inside the main body 2 through the mounting holes). The folding frame 33 is arranged between the fixing plate 32 and the adjacent object placing plate 31 and between the two adjacent object placing plates 31, the folding frame 33 comprises an electric push rod 333 and two pairs of supporting rods 331, the same pair of supporting rods 331 are mutually intersected and hinged at the intersection position, the two pairs of supporting rods 331 are respectively close to two inner walls of the main body 2 and are supported between the object placing plate 31 and the upper layer of the fixing plate 32 or the object placing plate 31, and the electric push rod 333 is used for pushing and pulling the mutually intersected supporting rods 331 to be overlapped or opened at the horizontal position, so that the object placing plate 31 is lifted. The control box 6 is internally provided with a processor 61, the top of the object placing plate 31 is provided with an induction unit 38, the front end of the object placing plate 31 is provided with a reset key 39, the processor 61 is respectively electrically connected with the induction unit 38, the reset key 39, the input screen 4, the visual positioning navigation device 5 and the mobile chassis 1, the induction unit 38 is used for triggering the processor 61 to control the electric push rod 333 to drive the corresponding object placing plate 31 to ascend after detecting that an object on the object placing plate 31 is taken down, and the electric push rod 333 drives the corresponding object placing plate 31 to descend after the reset key 39 is used for pressing.
More specifically, the fixing plate 32 and the object placing plate 31 are in a shape of inverted square grooves, and both side walls of the fixing plate 32 and the object placing plate 31 close to the inner wall of the main body 2 are provided with sideslip grooves 35, wherein one side of the fixing plate 32 and one side of the object placing plate 31 at the lowest layer of the sideslip grooves 35 are provided with one side, the other object placing plates 31 are provided with two sides, one end close to the side sliding groove 35 is provided with a through hole 310, both sides of the top of the object placing plate 31 are provided with upper sliding grooves 34 along edges, and the bottoms of the upper sliding grooves 34 and the bottoms of the sideslip grooves 35 are all communicated; the rack 3 further comprises four connecting shafts 332, wherein the connecting shafts 332 are vertically connected between the end parts of the two support rods 331 of different pairs, the end parts of the connecting shafts 332 penetrate through and laterally protrude outside the support rods 331, the upper ends of the support rods 331 are positioned in the upper-layer fixing plate 32 or the storage plate 31, the lower ends of the support rods 331 penetrate through the upper sliding groove 34 and then are inserted into the storage plate 31, and the side protruding end parts of the two connecting shafts 332 of the same layer are respectively inserted into the through holes 310 and slidably arranged in the side sliding grooves 35; the electric push rod 333 is located inside the fixed plate 32 or the storage plate 31 and connected between two connecting shafts 332 located at the lower end of the support rod 331. Two connecting shafts 332 positioned at the lower end of the supporting rod 331 are respectively sleeved with a sleeve 335 and a cuboid-shaped fixed block 334, the bottom of the electric push rod 333 is fixedly connected with the fixed block 334, and the telescopic rod of the electric push rod 333 is fixedly connected with the sleeve 335. When in use, the electric push rod 333 pushes the connecting shafts 332, one connecting shaft 332 is fixed, the other connecting shaft 332 slides along the side sideslip groove 35, so that the two mutually hinged supporting rods 331 are driven to open or overlap like scissors, and finally the lifting or lowering of the object placing plate 31 is realized.
Referring to fig. 7 and 4, one end of both side walls of the storage plate 31, which is far from the through hole 310, is provided with a rotatable gear 36, both inner walls of the main body 2 are provided with guide grooves 21, the guide grooves 21 extend downward from the position of the fixing plate 32 to the lowest position where the lowest storage plate 31 can descend, the groove walls of the guide grooves 21, which are near the outside of the main body 2, are in the shape of racks, and the gear 36 is positioned in the guide grooves 21 and engaged with the groove walls thereof. When the object placing plate 31 is lifted, particularly when the supporting rods 331 are closed to one side of the through hole 310, if a heavy object is placed on the object placing plate 31, the whole object placing plate 31 tends to incline to one side, and clamping and wearing are easily caused by uneven stress; by providing the gear 36 and the guide groove with one side open tooth, a supporting effect and a guiding effect can be achieved, and the occurrence of this problem is avoided. In addition, the object placing plate 31 is surrounded by a circle of fences 37, and when the object placing plate 31 rises to the highest position, the fences 37 are matched and inserted into the upper fixing plate 32 or the object placing plate 31. In this way, the storage plate 31 can be inserted into the square groove of the upper layer in a matching manner, in addition to the purpose of preventing the articles from falling, and the storage plate 31 can be firmly attached to the fixing plate 32 or the storage plate 31 of the upper layer after being lifted.
Referring to fig. 8, a memory 63 electrically connected to the processor 61 and a battery 62 for supplying power are also provided in the control box 6. The processor 61 may use a single chip or other chips (including its peripheral circuits) with computing capability. The memory 63 is a circuit element for storing programs and data for supporting various operations of the processor 61. The battery 62 is typically a lithium battery. The sensing unit 38 may be a photo sensor or a pressure sensor, and is used to determine whether an article is placed on the storage plate 31 by sensing whether it is blocked or pressed.
It should be noted that the present invention is not limited to the above embodiments, and those skilled in the art can make other changes according to the inventive spirit of the present invention, and these changes according to the inventive spirit of the present invention should be included in the scope of the present invention as claimed.
Claims (8)
1. The utility model provides a vision positioning walking transport platform, includes mobile chassis (1), locates fuselage main part (2) on this mobile chassis (1), locates input screen (4), vision positioning navigation device (5) and control box (6) at this fuselage main part (2) top, be equipped with supporter (3) that are used for loading the article of waiting to transport in fuselage main part (2), input screen (4) are used for the input the position that the article of waiting to transport needs to transport to, vision positioning navigation device (5) are used for navigating in the transportation, control box (6) can be used to control the removal of mobile chassis (1), its characterized in that: the rack (3) comprises a fixed plate (32) and at least two layers of object placing plates (31) arranged below the fixed plate (32), the main body (2) is of a through-hole structure, the fixed plate (32) is fixed at the top of the inside of the main body (2), folding frames (33) are arranged between the fixed plate (32) and the adjacent object placing plates (31) and between the adjacent object placing plates (31), the folding frames (33) comprise electric push rods (333) and two pairs of support rods (331), the same pair of support rods (331) are mutually intersected and hinged at the intersection position, the two pairs of support rods (331) are respectively close to the two inner walls of the main body (2), and are supported between the object placing plates (31) and the fixed plate (32) or the object placing plates (31) at the upper layer, and the electric push rods (333) are used for pushing and pulling the mutually intersected support rods (331) to be overlapped or opened at the horizontal position so as to enable the object placing plates (31) to be lifted; the control box (6) is internally provided with a processor (61), the top of the storage plate (31) is provided with an induction unit (38) and the front end of the storage plate is provided with a reset key (39), the processor (61) is respectively electrically connected with the induction unit (38), the reset key (39), an input screen (4), a visual positioning navigation device (5) and a mobile chassis (1), the induction unit (38) is used for triggering the processor (61) to control the electric push rod (333) to drive the corresponding storage plate (31) to ascend after detecting that an object on the storage plate (31) is taken down, and the electric push rod (333) is used for driving the corresponding storage plate (31) to descend after being pressed by the reset key (39);
the two side walls of the fixing plate (32) and the object placing plate (31) close to the inner wall of the main body (2) are respectively provided with a side chute (35), wherein the side chute (35) is provided with one side of the fixing plate (32) and one side of the object placing plate (31) at the lowest layer, and the other object placing plates (31) are provided with two sides;
the two sides of the top of the storage plate (31) are also provided with upper sliding grooves (34) along the edges, and the bottoms of the upper sliding grooves (34) and the side sliding grooves (35) are all communicated;
the rack (3) further comprises four connecting shafts (332), wherein the connecting shafts (332) are vertically connected between the end parts of two supporting rods (331) of different pairs, the end parts of the connecting shafts (332) penetrate through and laterally protrude out of the supporting rods (331), the upper ends of the supporting rods (331) are positioned in the fixing plates (32) or the object placing plates (31) of the upper layer, the lower ends of the supporting rods (331) penetrate through the upper sliding grooves (34) and then are inserted into the object placing plates (31), and the laterally protruding end parts of the two connecting shafts (332) of the same layer are respectively inserted into the through holes (310) and slidably arranged in the side sliding grooves (35);
the electric push rod (333) is located inside the fixed plate (32) or the object placing plate (31) and is connected between two connecting shafts (332) located at the lower end of the supporting rod (331).
2. The vision-locating walking transport platform of claim 1, wherein: the fixing plate (32) and the object placing plate (31) are in the shape of inverted square grooves.
3. The vision-locating walking transport platform of claim 2, wherein: two connecting shafts (332) positioned at the lower end of the supporting rod (331) are respectively sleeved with a sleeve (335) and a cuboid-shaped fixed block (334), the bottom of the electric push rod (333) is fixedly connected with the fixed block (334), and a telescopic rod of the electric push rod (333) is fixedly connected with the sleeve (335).
4. The vision-locating walking transport platform of claim 2, wherein: one end of two lateral walls of the storage plate (31) far away from the through hole (310) is provided with a rotatable gear (36), two inner walls of the machine body (2) are provided with guide grooves (21), the guide grooves (21) extend downwards from the position of the fixing plate (32) to the lowest position where the storage plate (31) at the lowest layer can descend, the groove wall of the guide grooves (21) close to the outer part of the machine body (2) is in a rack shape, and the gear (36) is positioned in the guide grooves (21) and meshed with the groove wall of the guide grooves.
5. The vision-locating walking transport platform of claim 2, wherein: the storage plate (31) is surrounded by a circle of fences (37), and when the storage plate (31) rises to the highest position, the fences (37) are inserted into the upper fixing plate (32) or the storage plate (31) in a matching mode.
6. The vision-locating walking transport platform of claim 1, wherein: the top of the fixing plate (32) is provided with a plurality of mounting holes, and the fixing plate (32) is connected to the top in the main body (2) of the machine body through the mounting holes.
7. The vision-locating walking transport platform of claim 1, wherein: the control box (6) is also internally provided with a memory (63) electrically connected with the processor (61) and a storage battery (62) for supplying power.
8. The vision-locating walking transport platform of claim 1, wherein: the movable chassis (1) is a wheeled movable chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210684460.5A CN114947381B (en) | 2022-06-16 | 2022-06-16 | Visual positioning walking conveying platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210684460.5A CN114947381B (en) | 2022-06-16 | 2022-06-16 | Visual positioning walking conveying platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114947381A CN114947381A (en) | 2022-08-30 |
| CN114947381B true CN114947381B (en) | 2023-12-15 |
Family
ID=82962763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210684460.5A Active CN114947381B (en) | 2022-06-16 | 2022-06-16 | Visual positioning walking conveying platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114947381B (en) |
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| CN212729234U (en) * | 2020-05-21 | 2021-03-19 | 上海缔爱外家居科技有限公司 | Foldable supporter of layer height adjustable |
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| CN113080677A (en) * | 2021-04-26 | 2021-07-09 | 江西应用科技学院 | Carrying robot capable of automatically taking and placing objects |
| EP3868518A1 (en) * | 2020-02-20 | 2021-08-25 | Per Henrik Ljunggren | Robot and method for warehouse automation |
| CN216707558U (en) * | 2022-01-10 | 2022-06-10 | 上海擎朗智能科技有限公司 | Folding component, tray assembly and intelligent mobile device |
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| US11540627B2 (en) * | 2019-01-02 | 2023-01-03 | Lg Electronics Inc. | Serving module and robot having the same |
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|---|---|---|---|---|
| JP2001208466A (en) * | 2000-01-26 | 2001-08-03 | Matsushita Electric Works Ltd | Heat insulation and cold insulation case device |
| WO2018174781A1 (en) * | 2017-03-21 | 2018-09-27 | Silver & Stal Enterprises Ab | Transport cart |
| CN209573820U (en) * | 2018-04-17 | 2019-11-05 | 张佳慧 | It is a kind of can automatic lifting the double-deck shelf |
| DE202019101143U1 (en) * | 2018-12-26 | 2019-03-20 | Nanjing Enwell Technology Service Co., Ltd. | Meal Delivery Robot |
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| CN216707558U (en) * | 2022-01-10 | 2022-06-10 | 上海擎朗智能科技有限公司 | Folding component, tray assembly and intelligent mobile device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114947381A (en) | 2022-08-30 |
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