CN110884676B - Electric food cart system and method thereof - Google Patents

Electric food cart system and method thereof Download PDF

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Publication number
CN110884676B
CN110884676B CN201911042180.9A CN201911042180A CN110884676B CN 110884676 B CN110884676 B CN 110884676B CN 201911042180 A CN201911042180 A CN 201911042180A CN 110884676 B CN110884676 B CN 110884676B
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China
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data
pair
driving motor
sleeve
output shaft
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CN201911042180.9A
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CN110884676A (en
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郑岳
廖毅飞
董中进
阎浩
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Wuxi Quanjiayu Airport Equipment Co ltd
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Wuxi Quanjiayu Airport Equipment Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/32—Ground or aircraft-carrier-deck installations for handling freight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
    • B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
    • F16D1/033—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

An electric food car system and a method thereof comprise a chassis and an upper assembly part, wherein the chassis is connected with the upper assembly part through a fork frame, the upper assembly part comprises a box body of a food car and a four-way platform arranged on one side of the box body, a driving motor is arranged in the middle of the chassis, and an output shaft of the driving motor is in driving connection with a rear wheel; the structure that the output shaft of driving motor and rear wheel drive are connected does: the rear wheel is sleeved on the rotating shaft, and an output shaft of the driving motor is connected with the rotating shaft through a coupling device; the coupling device comprises a pair of lantern rings, a pair of screw rods with external screw openings formed in the outer surfaces, and a pair of reinforcing covers. The defects that in the prior art, the connection part between the coupler and the output shaft and the rotating shaft is deformed or cracked to influence the safe running of the aviation food vehicle under the action of bending moment or torque generated by frequent speed change and speed regulation of the coupler in combination with other structures or methods are effectively overcome.

Description

Electric food cart system and method thereof
Technical Field
The invention relates to the technical field of electromotion, and also relates to the technical field of food carts, in particular to an electric food cart system and a method thereof.
Background
With the development of society, the pace of life of people is accelerated rapidly, the eating time is short, the packaging and taking away become the current mainstream, fast food becomes a fast and convenient eating mode, and fixed restaurants are full at fixed eating time, so that the eating time of people is greatly influenced. The food cart greatly overcomes the defects of fixed shops and spreading points, and can provide the service of delivering food nearby for consumers.
The food vehicle is an aviation food vehicle applied in the field of airports, belongs to a special vehicle for airports and is specially used for catering of passenger planes. The aviation food vehicle comprises a chassis and an upper assembly part, wherein the upper assembly part comprises a compartment body for storing food and a four-way platform arranged on one side of the compartment body. The chassis is connected with the upper assembly part through a fork frame, and a hydraulic cylinder arranged on the chassis can drive the fork frame to ascend so that the upper assembly part is close to a cabin door of the airplane to convey food to the airplane.
However, the existing aviation food vehicle generally uses gasoline as a driving device of driving energy, and the operation of the driving device using gasoline as driving energy can cause serious air pollution of sulfur compounds and nitrogen oxides, which is not environment-friendly.
Therefore, an environment-friendly driving device for an aviation food vehicle is needed, and generally, the driving device needs to drive wheels of the aviation food vehicle to rotate, an output shaft of the driving device is often connected with a rotating shaft sleeved with the wheels through a coupler, so that the driving device can pull the rotating shaft through the output shaft to rotate the wheels, but because the aviation food vehicle often needs to change speed and adjust speed, and under the action of bending moment or torque generated by the conventional coupler under frequent speed and change speed, the connecting part between the coupler and the output shaft and the rotating shaft is often deformed or brittle after a long time, so that the safe running of the aviation food vehicle is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides an electric food cart system and a method thereof, which effectively overcome the defect that the connection part between a coupler and an output shaft and a rotating shaft is deformed or cracked to influence the safe running of an aviation food cart under the action of bending moment or torque generated by frequent speed change and speed regulation of the coupler in the prior art.
In order to overcome the defects in the prior art, the invention provides a solution for an electric food cart system and a method thereof, which comprises the following steps:
an electric food cart system comprises a chassis A and an upper mounting component, wherein the chassis A is connected with the upper mounting component through a fork frame B, and the upper mounting component comprises a box body C of a food cart and a four-way platform D arranged on one side of the box body C;
the food cart is an electrically driven vehicle.
The food cart is characterized in that solar panels are arranged on a front engine room cover and a cart door of the food cart, the solar panels are connected with a storage battery arranged on a chassis through wires, and the storage battery and a driving motor are in control connection through a charging control system and a driving control system;
a driving motor is arranged in the middle of the chassis, and an output shaft of the driving motor is in driving connection with the rear wheel;
the structure that the output shaft of driving motor and rear wheel drive are connected does:
the rear wheel is sleeved on the rotating shaft, and an output shaft of the driving motor is connected with the rotating shaft through a coupling device;
the coupling device comprises a pair of lantern rings 2, a pair of screw rods 3 with external screw openings on the outer surfaces and a pair of reinforcing covers 4;
the pair of lantern rings 2 are respectively and correspondingly sleeved on the outer surfaces of the output shaft of the driving motor and the rotating shaft which are distributed oppositely, so that the output shaft of the driving motor is connected with the rotating shaft;
the pair of lantern rings 2 are spliced, and the pair of lantern rings 2 are fixedly connected along a direction parallel to the central line of the lantern rings 2 through a pair of screw rods 3 with external screw openings on the outer surfaces;
the pair of lantern rings 2 are composed of a first sleeve 202 and a second sleeve 203, one end of each first sleeve 202 is pivoted with one end of the corresponding second sleeve 203 through a hinge 204, one end of each first sleeve 202 is provided with a first connecting piece 2022, one end of each second sleeve 203 is provided with a second connecting piece 2032, each first connecting piece 2022 is pivoted with the corresponding second connecting piece 2032 through a hinge 204, and the other end of each first sleeve 202 is clamped with the other end of the corresponding second sleeve 203 and fixedly connected with the center line in a direction parallel to the center line through a tensioning screw 205.
Each another head of the first external member 202 is provided with a massive third coupling member 2023 having a through hole with an internal thread opening formed on an inner surface, each another head of the second external member 203 is provided with a fourth coupling member 2033 having a through hole with an internal thread opening formed on an inner surface and a clamping opening formed thereon, each fourth coupling member 2033 is clamped with the corresponding third coupling member 2023, and is screwed via a tension screw 205, so that the third coupling member 2023 and the fourth coupling member 2033 are fixedly connected along a direction parallel to the center line.
A plurality of first limiting openings 206 for limiting are formed in the outer surfaces of each first sleeve 202 and the corresponding second sleeve 203 according to the direction pointing to the circle center or the center of the first sleeve, and protruding ring-shaped bodies 207 with the same radian are formed in the end walls of the edge portions of each first sleeve 202 and the corresponding second sleeve 203.
A plurality of second limiting openings 208 for limiting are formed in the outer surface of each protruding ring-shaped body 207 in the direction pointing to the circle center or the center of the protruding ring-shaped body, and a first through hole 209 with an inner thread opening formed in the inner surface is formed in the end wall of each first sleeve 202 and the end wall of the corresponding second sleeve 203 in the direction parallel to the center line.
A pair of reinforcing covers 4 are fastened between the pair of lantern rings 2, a plurality of limiting protrusions 402 are arranged on the inner surfaces of the reinforcing covers 4 according to the direction pointing to the circle centers or the centers of the reinforcing covers, the limiting protrusions 402 are fastened with corresponding first limiting openings 206 and second limiting openings 208 for limiting, and second through openings 403 with inner thread openings are formed in the inner surfaces of the side walls of the reinforcing covers 4 according to the direction parallel to the center line.
The second through hole 403 with an internal screw hole on the inner surface is screwed with the corresponding first through hole 209 with an internal screw hole on the inner surface through the screw rod 3 with an external screw hole on the outer surface.
The end wall of the inner side of one of the lantern rings 2 is provided with a fan-shaped annular clamping interface 2021, the end wall of the inner side of the other lantern ring 2 is provided with a fan-shaped annular clamping connector 2010, and the fan-shaped annular clamping connector 2010 is clamped with the fan-shaped annular clamping interface 2021.
The inner surfaces of the first and second members 202 and 203 are fixedly connected with a plurality of plastic sheets for increasing friction.
The outer surfaces of the pair of lantern rings 2 are hot-dipped with hot-dip galvanized layers.
And a charging control system and a driving control system are arranged in the front cabin E of the food vehicle.
The upper mounting component and the chassis are respectively provided with a first hydraulic system and a second hydraulic system which are independent of each other;
the first hydraulic system is used for driving the upper assembly part to move so as to align a cabin door of the airplane; the second hydraulic system is used for supporting the chassis and driving the fork frame to ascend and descend.
The method of the electric food cart system comprises:
when the coupling device is used, the output shaft and the rotating shaft of the driving motor are kept at the same central line and are arranged, the pair of lantern rings 2 are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings 2 are arranged side by side and stand up, the tensioning screws 205 are screwed firmly in sequence, the pair of reinforcing covers 4 are sequentially covered and screwed into the screw rod 3 with the outer screw hole on the outer surface, and therefore the corresponding lantern rings 2 are fixed firmly, and the outer surface of the output shaft of the driving motor is firmly and stably connected with the rotating shaft.
The invention has the beneficial effects that:
in a word, the coupler device is not complex in structure and convenient to execute, the size of the area, connected with the coupler device, of the output shaft and the rotating shaft of the driving motor is increased, the whole structure is more suitable for shaft connection, the connected structure is firmer, the probability of deformation or brittle fracture among the coupler, the output shaft and the rotating shaft is reduced, and the safety of safe driving of the aviation food vehicle is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the electric food cart system of the present invention.
Fig. 2 is a shaft coupling structure diagram of the coupling device of the present invention.
Fig. 3 is a partial structural view of the coupling device of the present invention.
Fig. 4 is a partial block diagram of a collar of the coupling device of the present invention.
Fig. 5 is a partial block diagram of another collar of the coupling device of the present invention.
Fig. 6 is a partial structural view of a reinforcing cover of the coupling device of the present invention.
Detailed Description
The invention will be further described with reference to the following figures and examples.
Example 1:
as shown in fig. 1-6, the electric food cart system, a chassis a and a top-loading component, wherein the chassis a and the top-loading component are connected through a fork B, and the top-loading component comprises a carriage C of an aviation food cart and a four-way platform D arranged on one side of the carriage C; the aviation food vehicle is an electric drive vehicle. The structure of the electric driving vehicle is environment-friendly, and can not cause serious air pollution of heavy sulfides and nitrogen oxides, and the aviation food vehicle can keep clean and sanitary when running. The aviation food vehicle is characterized in that solar panels are mounted on a front engine room cover and a vehicle door of the aviation food vehicle, the solar panels are connected with a storage battery arranged on a chassis through wires, and the storage battery and a driving motor are in control connection through a charging control system and a driving control system; a driving motor is arranged in the middle of the chassis, and an output shaft of the driving motor is in driving connection with the rear wheel; the structure that the output shaft of driving motor and rear wheel drive are connected does: the rear wheel is sleeved on the rotating shaft in a key connection or screw connection mode, and an output shaft of the driving motor is connected with the rotating shaft through a coupling device; the coupling device comprises a pair of annular columnar lantern rings 2, a pair of screw rods 3 with external screw openings on the outer surfaces and a pair of sector annular reinforcing covers 4; the pair of lantern rings 2 are respectively and correspondingly sleeved on the outer surfaces of the output shaft of the driving motor and the rotating shaft which are distributed oppositely, so that the output shaft of the driving motor is connected with the rotating shaft; the pair of lantern rings 2 are spliced, and the pair of lantern rings 2 are fixedly connected along a direction parallel to the central line of the lantern rings 2 through a pair of screw rods 3 with external screw openings on the outer surfaces; the pair of lantern rings 2 are composed of a half-ring-shaped first sleeve 202 and a half-ring-shaped second sleeve 203, one end of each first sleeve 202 is pivoted with one end of the corresponding second sleeve 203 through a hinge 204, one end of each first sleeve 202 is provided with a block-shaped first connecting piece 2022, one end of each second sleeve 203 is provided with a block-shaped second connecting piece 2032 with a clamping opening, each first connecting piece 2022 is pivoted with the corresponding second connecting piece 2032 through the hinge 204, the other end of each first sleeve 202 is clamped with the other end of the corresponding second sleeve 203 and is fixedly connected with the other end of the corresponding second sleeve 203 in a direction parallel to the center line through a tensioning screw 205. Each of the other ends of the first external members 202 is provided with a block-shaped third connecting member 2023 having a through hole with an internal screw hole formed in an inner surface thereof, each of the other ends of the second external members 203 is provided with a block-shaped fourth connecting member 2033 having a through hole with an internal screw hole formed in an inner surface thereof and a clamping hole formed therein, and each of the fourth connecting members 2033 is clamped with the corresponding third connecting member 2023 and is screwed via a tightening screw 205 so that the third connecting member 2023 and the fourth connecting member 2033 are fixedly connected in a direction parallel to the center line. A plurality of first limiting openings 206 for limiting are formed in the outer surfaces of each first sleeve 202 and the corresponding second sleeve 203 according to the direction pointing to the circle center or the center of the first sleeve, and protruding ring-shaped bodies 207 with the same radian are formed in the end walls of the edge portions of each first sleeve 202 and the corresponding second sleeve 203. A plurality of second limiting openings 208 for limiting are formed in the outer surface of each protruding ring-shaped body 207 in the direction pointing to the circle center or the center of the protruding ring-shaped body, and a first through hole 209 with an inner thread opening formed in the inner surface is formed in the end wall of each first sleeve 202 and the end wall of the corresponding second sleeve 203 in the direction parallel to the center line. A pair of reinforcing covers 4 are fastened between the pair of lantern rings 2, a plurality of limiting protrusions 402 are arranged on the inner surfaces of the reinforcing covers 4 according to the direction pointing to the circle centers or the centers of the reinforcing covers, the limiting protrusions 402 are fastened with corresponding first limiting openings 206 and second limiting openings 208 for limiting, and second through openings 403 with inner thread openings are formed in the inner surfaces of the side walls of the reinforcing covers 4 according to the direction parallel to the center line. The second through hole 403 with an internal screw hole on the inner surface is screwed with the corresponding first through hole 209 with an internal screw hole on the inner surface through the screw rod 3 with an external screw hole on the outer surface.
The end wall of the inner side of one of the lantern rings 2 is provided with a fan-shaped annular clamping interface 2021, the end wall of the inner side of the other lantern ring 2 is provided with a fan-shaped annular clamping connector 2010, and the fan-shaped annular clamping connector 2010 is clamped with the fan-shaped annular clamping interface 2021.
The inner surfaces of the first and second members 202 and 203 are fixedly connected with a plurality of plastic sheets for increasing friction.
The outer surfaces of the pair of lantern rings 2 are hot-dipped with hot-dip galvanized layers. Can play the role of corrosion prevention.
When the coupling device is used, the output shaft and the rotating shaft of the driving motor are kept at the same central line and are arranged, the pair of lantern rings 2 are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings 2 are arranged side by side and stand up, the tensioning screws 205 are screwed firmly in sequence, the pair of reinforcing covers 4 are sequentially covered and screwed into the screw rod 3 with the outer screw hole on the outer surface, and therefore the corresponding lantern rings 2 are fixed firmly, and the outer surface of the output shaft of the driving motor is firmly and stably connected with the rotating shaft.
The coupler device is not complex in structure and convenient to execute, the size of the area, connected with the coupler device, of the output shaft and the rotating shaft of the driving motor is increased, the whole structure is more suitable for shaft connection, the connected structure is firmer, the probability of deformation or brittle fracture among the coupler, the output shaft and the rotating shaft is reduced, and the safety of safe driving of the aviation food vehicle is improved. And a charging control system and a driving control system are arranged in a front cabin E of the aviation food vehicle. The upper mounting component and the chassis are respectively provided with a first hydraulic system and a second hydraulic system which are independent of each other; the first hydraulic system is used for driving the upper assembly part to move so as to align a cabin door of the airplane; the second hydraulic system is used for supporting the chassis and driving the fork frame to ascend and descend.
The method of the electric food cart system comprises: when the coupling device is used, the output shaft and the rotating shaft of the driving motor are kept at the same central line and are arranged, the pair of lantern rings 2 are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings 2 are arranged side by side and stand up, the tensioning screws 205 are screwed firmly in sequence, the pair of reinforcing covers 4 are sequentially covered and screwed into the screw rod 3 with the outer screw hole on the outer surface, and therefore the corresponding lantern rings 2 are fixed firmly, and the outer surface of the output shaft of the driving motor is firmly and stably connected with the rotating shaft.
Example 2:
the electric food car system comprises a chassis A and an upper assembly part, wherein the chassis A is connected with the upper assembly part through a fork frame B, and the upper assembly part comprises a carriage body C of an aviation food car and a four-way platform D arranged on one side of the carriage body C; the aviation food vehicle is an electric drive vehicle. The structure of the electric driving vehicle is environment-friendly, and can not cause serious air pollution of heavy sulfides and nitrogen oxides, and the aviation food vehicle can keep clean and sanitary when running. The aviation food vehicle is characterized in that solar panels are mounted on a front engine room cover and a vehicle door of the aviation food vehicle, the solar panels are connected with a storage battery arranged on a chassis through wires, and the storage battery and a driving motor are in control connection through a charging control system and a driving control system; a driving motor is arranged in the middle of the chassis, and an output shaft of the driving motor is in driving connection with the rear wheel; the structure that the output shaft of driving motor and rear wheel drive are connected does: the rear wheel is sleeved on the rotating shaft in a key connection or screw connection mode, and an output shaft of the driving motor is connected with the rotating shaft through a coupling device; the coupling device comprises a pair of annular columnar lantern rings 2, a pair of screw rods 3 with external screw openings on the outer surfaces and a pair of sector annular reinforcing covers 4; the pair of lantern rings 2 are respectively and correspondingly sleeved on the outer surfaces of the output shaft of the driving motor and the rotating shaft which are distributed oppositely, so that the output shaft of the driving motor is connected with the rotating shaft; the pair of lantern rings 2 are spliced, and the pair of lantern rings 2 are fixedly connected along a direction parallel to the central line of the lantern rings 2 through a pair of screw rods 3 with external screw openings on the outer surfaces; the pair of lantern rings 2 are composed of a half-ring-shaped first sleeve 202 and a half-ring-shaped second sleeve 203, one end of each first sleeve 202 is pivoted with one end of the corresponding second sleeve 203 through a hinge 204, one end of each first sleeve 202 is provided with a block-shaped first connecting piece 2022, one end of each second sleeve 203 is provided with a block-shaped second connecting piece 2032 with a clamping opening, each first connecting piece 2022 is pivoted with the corresponding second connecting piece 2032 through the hinge 204, the other end of each first sleeve 202 is clamped with the other end of the corresponding second sleeve 203 and is fixedly connected with the other end of the corresponding second sleeve 203 in a direction parallel to the center line through a tensioning screw 205. Each of the other ends of the first external members 202 is provided with a block-shaped third connecting member 2023 having a through hole with an internal screw hole formed in an inner surface thereof, each of the other ends of the second external members 203 is provided with a block-shaped fourth connecting member 2033 having a through hole with an internal screw hole formed in an inner surface thereof and a clamping hole formed therein, and each of the fourth connecting members 2033 is clamped with the corresponding third connecting member 2023 and is screwed via a tightening screw 205 so that the third connecting member 2023 and the fourth connecting member 2033 are fixedly connected in a direction parallel to the center line. A plurality of first limiting openings 206 for limiting are formed in the outer surfaces of each first sleeve 202 and the corresponding second sleeve 203 according to the direction pointing to the circle center or the center of the first sleeve, and protruding ring-shaped bodies 207 with the same radian are formed in the end walls of the edge portions of each first sleeve 202 and the corresponding second sleeve 203. A plurality of second limiting openings 208 for limiting are formed in the outer surface of each protruding ring-shaped body 207 in the direction pointing to the circle center or the center of the protruding ring-shaped body, and a first through hole 209 with an inner thread opening formed in the inner surface is formed in the end wall of each first sleeve 202 and the end wall of the corresponding second sleeve 203 in the direction parallel to the center line. A pair of reinforcing covers 4 are fastened between the pair of lantern rings 2, a plurality of limiting protrusions 402 are arranged on the inner surfaces of the reinforcing covers 4 according to the direction pointing to the circle centers or the centers of the reinforcing covers, the limiting protrusions 402 are fastened with corresponding first limiting openings 206 and second limiting openings 208 for limiting, and second through openings 403 with inner thread openings are formed in the inner surfaces of the side walls of the reinforcing covers 4 according to the direction parallel to the center line. The second through hole 403 with an internal screw hole on the inner surface is screwed with the corresponding first through hole 209 with an internal screw hole on the inner surface through the screw rod 3 with an external screw hole on the outer surface. The end wall of the inner side of one of the lantern rings 2 is provided with a fan-shaped annular clamping interface 2021, the end wall of the inner side of the other lantern ring 2 is provided with a fan-shaped annular clamping connector 2010, and the fan-shaped annular clamping connector 2010 is clamped with the fan-shaped annular clamping interface 2021. The inner surfaces of the first and second members 202 and 203 are fixedly connected with a plurality of plastic sheets for increasing friction. The outer surfaces of the pair of lantern rings 2 are hot-dipped with hot-dip galvanized layers. Can play the role of corrosion prevention. When the coupling device is used, the output shaft and the rotating shaft of the driving motor are kept at the same central line and are arranged, the pair of lantern rings 2 are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings 2 are arranged side by side and stand up, the tensioning screws 205 are screwed firmly in sequence, the pair of reinforcing covers 4 are sequentially covered and screwed into the screw rod 3 with the outer screw hole on the outer surface, and therefore the corresponding lantern rings 2 are fixed firmly, and the outer surface of the output shaft of the driving motor is firmly and stably connected with the rotating shaft. The coupler device is not complex in structure and convenient to execute, the size of the area, connected with the coupler device, of the output shaft and the rotating shaft of the driving motor is increased, the whole structure is more suitable for shaft connection, the connected structure is firmer, the probability of deformation or brittle fracture among the coupler, the output shaft and the rotating shaft is reduced, and the safety of safe driving of the aviation food vehicle is improved. And a charging control system and a driving control system are arranged in a front cabin E of the aviation food vehicle. The upper mounting component and the chassis are respectively provided with a first hydraulic system and a second hydraulic system which are independent of each other; the first hydraulic system is used for driving the upper assembly part to move so as to align a cabin door of the airplane; the second hydraulic system is used for supporting the chassis and driving the fork frame to ascend and descend.
The method of the electric food cart system comprises:
when the coupling device is used, the output shaft and the rotating shaft of the driving motor are kept at the same central line and are arranged, the pair of lantern rings 2 are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings 2 are arranged side by side and stand up, the tensioning screws 205 are screwed firmly in sequence, the pair of reinforcing covers 4 are sequentially covered and screwed into the screw rod 3 with the outer screw hole on the outer surface, and therefore the corresponding lantern rings 2 are fixed firmly, and the outer surface of the output shaft of the driving motor is firmly and stably connected with the rotating shaft.
The charging control system of the aviation food vehicle is a photovoltaic power generation system, which comprises a direct current converter; the output end of the solar panel is connected with the input end of the direct current converter, and the output end of the direct current converter is connected with the input end of the storage battery; the direct current converter adopts a Boost converter, and the Boost performance of the Boost converter is achieved by controlling the duty ratio of the voltage; the storage battery is used as a load, and the electric energy converted from the solar energy absorbed by the solar cell panel is stored. The direct current converter adopts a BOOST converter and comprises components such as an inductor L, a capacitor C, a switching element SW, a diode D and the like, and the inductor L is arranged in a circuit to ensure that the BOOST converter works in a continuous current state; the charging controller receives the detected voltage and current signals output by the solar cell panel and controls the switching state of the switching device SW according to the detected voltage and current signals, so that the output signals of the solar cell panel are converted into square wave signals with variable duty ratio to control the direct current converter, and the output voltage of the solar cell panel is changed; the switching regulation of the direct current converter adopts pulse width modulation, and the duty ratio is regulated by regulating the pulse width, so that the output impedance of the solar cell panel is matched with the load impedance. The drive control system includes: the device comprises a double current sampling module, an encoder speed response module, an inverter, a drive control module and a filter; the control end of drive control module connects the dc-to-ac converter, driving motor is connected to the output of dc-to-ac converter, drive control module passes through encoder speed response module and is connected with driving motor, the one end of dual electric current sampling module is connected respectively control module's one end with the one end of dc-to-ac converter, the other end of dual electric current sampling module is connected respectively control module's the other end and the one end of battery, the other end of battery is connected respectively the other end of dc-to-ac converter with the one end of wave filter, the other end of wave filter connects gradually dual electric current sampling module with control module. The drive control module comprises a current processing module, the current processing module is used for receiving signals collected by the dual current sampling module to obtain the current value of the storage battery and the current value of the phase current of the drive motor, and the current processing module is connected with the two ends of the dual current sampling module. The current processing module performs signal processing on the dual current sampling module to obtain the current of the storage battery and the phase current of the driving motor; the speed response module acquires speed and position signals of the driving motor; the control module performs appropriate control algorithm calculation conversion on the obtained current of the storage battery, the phase current response signal and the speed position signal of the driving motor, and then gives a control signal to the inverter to drive the driving motor. The inverter adopts a three-phase six-bridge arm structure, the driving control module outputs 6 paths of PWM control signals, the PWM control signals are complementarily output in pairs, dead time is set, and three phase lines of the driving motor are controlled in three groups. The dual current sampling module is composed of two sampling resistors connected in series or 2 taps led out from a single resistor.
The dual current sampling module can be a current sensor; the speed response module comprises a speed sensor and a GPS positioning module; the control module can be a PLC, a single chip microcomputer or an ARM processor; in this way, the control module performs appropriate control algorithm calculation conversion on the obtained current of the storage battery, the phase current response signal and the speed position signal of the driving motor, and then gives a control signal to the inverter to drive the driving motor. In order to realize the purpose of remote monitoring data, the control module also needs to transmit the obtained data such as the current of the storage battery, the phase current response signal and the speed position signal of the driving motor to a background server in real time for displaying for remote monitoring, thus, the control module is connected with a wireless communication module, the wireless communication module is connected with the background server in a wireless network through a wireless network, the wireless communication module can be a 3G module or a 4G module, the wireless network can be a 3G network or a 4G network, the background server can be a PC, then, the control module also needs to transmit the obtained data such as the current of the storage battery, the phase current response signal and the speed position signal of the driving motor to the background server through the wireless communication module for displaying for remote monitoring, and the background server receives the current of the storage battery, after the data such as the phase current response signal and the speed position signal of the driving motor are obtained, a response message needs to be returned to the control module; however, the current wireless data transmission mode can achieve data exchange between the background server and the control module; however, due to the constraint that the reliability of data communications between the control module and the backend server, which is easily compromised and is achieved through the wireless network, is not high, the defect that the reliability of data communications between the backend server and the control module is not high is often accompanied; therefore, it is an urgent objective to provide a data transmission method and system to improve the performance of data transmission between the background server and the control module.
With improvement, the dual current sampling module can be a current sensor; the speed response module comprises a speed sensor and a GPS positioning module; the control module can be a PLC, a single chip microcomputer or an ARM processor; in this way, the control module performs appropriate control algorithm calculation conversion on the obtained current of the storage battery, the phase current response signal and the speed position signal of the driving motor, and then gives a control signal to the inverter to drive the driving motor. In order to realize the purpose of remotely monitoring data, the control module also needs to transmit the obtained data such as the current of the storage battery, the phase current response signal and the speed position signal of the driving motor to a background server in real time for being displayed for remote monitoring, so that the control module is connected with a wireless communication module, the wireless communication module is connected with the background server in a wireless network through a wireless network, the wireless communication module can be a 3G module or a 4G module, the wireless network can be a 3G network or a 4G network, the background server can be a PC (personal computer), then the control module also needs to transmit the obtained data such as the current of the storage battery, the phase current response signal and the speed position signal of the driving motor to the background server through the wireless communication module for being displayed for remote monitoring, and the background server receives the current of the storage battery, after the data such as the phase current response signal and the speed position signal of the driving motor are obtained, a response message needs to be returned to the control module;
the control module transmits the obtained data of the current of the storage battery, the phase current response signal of the driving motor and the speed position signal to the background server through the wireless communication module, and the control module comprises the following steps:
step A-1: receiving a first data transmitted by the control module through the USB port; the data one is data such as the current of the storage battery, a phase current response signal of the driving motor and a speed position signal.
Further, when data transmission between the control module and the background server needs to be achieved, the control module needs to be connected with the wireless communication module through a structure connected with the USB port to achieve physical connection between the control module and the wireless communication module, and the wireless communication module is connected with the background server through a wireless network to achieve link connection between the wireless communication module and the background server.
Furthermore, during the period of achieving the data transmission of the control module to the background server, the wireless communication module initially receives the data transmitted by the control module through the USB port.
Step A-2: and when the first data is confirmed to meet the preset first transmission requirement, transmitting the first data to the background server in a wireless network transmission mode, and enabling the background server to respond to the first data to construct a second data.
Further, when the wireless communication module determines that the first data meets the first preset transfer requirement, the first data can be transferred to the background server in a wireless network transfer mode, and the background server responds to the first data to construct a second data; thus, the method for the wireless communication module to determine that the data conforms to the preset transmission requirement includes the following steps:
step B-1: receiving data III which is transmitted by the control module through the USB port and is coded by applying a preset coding parameter I, wherein the data III is coded data which is constructed by applying the data I through the control module by means of a preset coder;
furthermore, a first coding parameter is preset in the control module, and when the first data is determined to meet a first preset transmission requirement, the control module needs to receive a third data which is transmitted by the USB interface and encoded by using the first preset coding parameter; here, the control module is preset with an encoder, and the third data is encoded data constructed by the preset encoder through the control module application data.
Step B-2: decoding the received coded data III by using a preset decoding parameter to obtain first processed data III;
further, the decoding parameters are parameters required for the encoder to decode the encoded data after the data-to-data encoding is performed using the encoding parameters.
Furthermore, a first decoding parameter is preset in the wireless communication module, and after receiving a third data encoded by using the first preset encoding parameter, which is transmitted by the control module through the USB port, the first decoding parameter can be used to decode the received third encoded data by using the first preset decoding parameter in the wireless communication module, so as to obtain a third data after the first processing.
Step B-3: constructing second processed data III by using the data I through a preset encoder;
furthermore, an encoder is preset in the wireless communication module, and the encoder preset in the wireless communication module is the same as the encoder preset in the control module.
Step B-4: judging whether the data III after the first processing is the same as the data III after the second processing; at the same time, executing step B-5;
step B-5: and confirming that the data one meets the preset transmission requirement one.
Further, when the third processed data is determined to be the same as the third processed data, the first processed data is determined to meet the first transmission requirement, that is, the first processed data received by the wireless communication module is indeed transmitted through the control module connected with the wireless communication module.
Further, in the method for confirming that the data one conforms to the preset transmission requirement one, when the data three after the first processing is judged to be different from the data three after the second processing, the data one is confirmed not to conform to the preset transmission requirement one, namely, the data received by the wireless communication module is not transmitted through the control module connected with the wireless communication module.
In order to further ensure the reliability of the method that the control module transmits the obtained data such as the current of the storage battery, the phase current response signal of the driving motor and the speed position signal to the background server through the wireless communication module, the first data can be set as the first initial data which is transmitted through the control module and encoded by using the second encoding parameter.
Further, when the first data is initial data first transmitted by the control module and encoded by applying the second encoding parameter, the first data is transmitted to the background server in a wireless transmission mode, and the background server responds to the first data to construct the second data, which includes: and transmitting the first data to the background server in a wireless transmission mode, so that the background server can utilize two pairs of preset decoding parameters to execute decoding on the first data to obtain the first initial data and respond to the first initial data to construct the second data.
Further, the decoding parameter is a parameter required by the encoder to decode the encoded data encoded by applying the encoding parameter pair to the data one.
Furthermore, a second encoding parameter is preset in the control module, and the first data is obtained after the control module performs encoding by using the first encoding parameter and the second encoding parameter.
Furthermore, a second decoding parameter is preset in the background server, and when the first data is received by the background server and is obtained by encoding the first initial data, the first initial data is obtained by decoding the first data by using the preset second decoding parameter, so that the second data is constructed by responding to the first initial data.
The method is applied to a wireless communication module, and data I transmitted by a receiving and control module in a wireless transmission mode is received; when the first data is confirmed to meet the preset first transmission requirement, the first data is transmitted to the background server in a wireless transmission mode, the background server responds to the first data to construct a second data mode, the effect that the control module uses the wireless communication module to achieve data transmission with the background server through the wireless network is achieved, the constraint that the reliability of data transmission between the control module and the background server, which is achieved through the wireless network, is not high, is easy to leak is overcome, and the performance of data transmission between the background server and the control module is improved.
The method for the background server to return the response message to the control module is applied to a method for the background server to receive the first data and construct a second data serving as the response message for the control module, and then the second data is transmitted to the control module through the background server via the wireless communication module by virtue of a connection structure among the control module, the wireless communication module and the background server, and the method comprises the following steps:
step C-1: receiving data II transmitted by the background server in a wireless transmission mode;
further, after receiving the first data at the background server and obtaining the second data for responding to the control module by virtue of the first data, the second data can be initially transmitted to the wireless communication module through the background server in a wireless transmission manner, so that the wireless communication module can receive the second data transmitted by the background server in a wireless transmission manner.
Step C-2: the second data is transmitted to the control module in a wireless transmission mode, so that the second data is favorably applied to control the second data when the control module determines that the second data meets the second preset transmission requirement.
Furthermore, after the wireless communication module receives the second data transmitted by the background server in a wireless transmission mode, the second data can be transmitted to the control module through the USB port, and the control module can be controlled by using the second data when receiving the second data and determining that the second data meets the second preset transmission requirement.
In order to further ensure the reliability of the method for the background server to return the response message to the control module, the data two can be set as the initial data two constructed by the background server responding to the initial data one, and the preset decoding parameters are also used for executing the coding construction on the initial data two.
As for example, when the received data of the background server is the first initial data encoded by using the second encoding parameter and transmitted by the control module, the background server can perform decoding on the first initial data by using the first decoding parameter set in advance after receiving the first initial data to obtain the first initial data; and then, the background server can obtain initial data II for responding to the control module by virtue of the initial data I, and in order to ensure the reliability of the data transmission method, the background server can utilize two pairs of initial data II with preset decoding parameters to execute coding to construct data II.
Further, when the second data is the second initial data constructed by the background server responding to the first initial data and further applying a preset decoding parameter pair to the second initial data to execute the coding construction, the second data is transmitted to the control module in a wireless transmission mode, so that when the control module determines that the second data meets the preset transmission requirement pair, the second data is applied to control the second data, and the method comprises the following steps: the second data is transmitted to the control module in a wireless transmission mode, the control module is favorable for decoding the second data by using the preset encoding parameters to obtain the second initial data, and the second initial data is used for controlling the second initial data.
The background server transmits the second data to the wireless communication module in a wireless transmission mode, and then transmits the second data to the control module through the USB port through the wireless communication module, so that the effect that the background server uses the wireless communication module to achieve data transmission with the control module is achieved, and the performance of data transmission between the background server and the control module can be improved.
A data transfer apparatus for use in a wireless communication module, the apparatus comprising:
the first data receiving module is used for receiving the first data transmitted by the control module through the USB port;
the first data transmission module is used for transmitting the first data to the background server in a wireless network transmission mode when the first data is confirmed to meet the first preset transmission requirement, so that the background server responds to the first data to construct a second data.
Furthermore, the first data transmission module comprises a transmission request confirming module, and the transmission request confirming module is used for confirming that the first data meets the preset transmission request.
The delivery request-acknowledgment module includes:
the data receiving module II is used for receiving data III which is transmitted by the control module through the USB port and is coded by applying a preset coding parameter I, and the data III is coded data which is constructed by applying the data I through the control module by means of a preset coder;
the decoding module I is used for decoding the received coded data III by using preset decoding parameters to obtain first processed data III;
the data construction module is used for constructing a second processed data III by using the data I through a preset encoder;
the judging module is used for judging whether the data III after the first processing is the same as the data III after the second processing;
the identification module is used for identifying that the data one meets the preset transmission requirement one at the same time.
Furthermore, the first data transmission module further comprises a first data transmission submodule used for transmitting the first data to the background server in a wireless transmission mode, so that the background server can respond to the first data to construct a second data.
When the first data is the initial data I which is transmitted by the control module and is coded by using the coding parameter II, the first data transmission submodule is used for transmitting the first data to the background server in a network communication mode, so that the background server performs decoding on the first data by using the preset decoding parameter II to obtain the first initial data and responds to the first initial data to construct the second data.
The data transmission device is applied to the wireless communication module and receives the data I transmitted by the control module in a wireless transmission mode; when the first data is confirmed to meet the preset first transmission requirement, the first data is transmitted to the background server in a wireless transmission mode, the background server responds to the first data to construct a second data mode, the effect that the control module uses the wireless communication module to achieve data transmission with the background server through the wireless network is achieved, the constraint that the reliability of data transmission between the control module and the background server, which is achieved through the wireless network, is not high, is easy to leak is overcome, and the performance of data transmission between the background server and the control module is improved.
Another data transfer apparatus includes:
the data receiving module II is used for receiving data II transmitted by the background server in a wireless transmission mode;
and the second data transmission module is used for transmitting the second data to the control module in a wireless transmission mode, so that the second data can be used for controlling the second data when the control module determines that the second data meets the second preset transmission requirement.
Furthermore, after the wireless communication module receives the second data transmitted by the background server in a wireless transmission mode, the second data can be transmitted to the control module through the USB port, and the control module can be controlled by using the second data when receiving the second data and determining that the second data meets the second preset transmission requirement.
In order to further ensure the reliability of the method for the background server to return the response message to the control module, the data two can be set as the initial data two constructed by the background server responding to the initial data one, and the preset decoding parameters are also used for executing the coding construction on the initial data two.
Therefore, the second data is transmitted to the wireless communication module in a wireless transmission mode through the background server, and then the second data is transmitted to the control module through the USB port through the wireless communication module, so that the effect that the background server uses the wireless communication module to achieve data transmission with the control module is achieved, and the performance of data transmission between the background server and the control module can be improved.
The data I is applied to the wireless communication module and is transmitted in a wireless transmission mode through the receiving and receiving control module; and when the first data is confirmed to meet the preset transmission requirement, the first data is transmitted to the background server through the network communication mode, so that the background server responds to the first data and constructs a second data mode, the purpose that the control module uses the network of the wireless communication module to achieve data transmission with the background server is achieved, the problem that the control module which is dialed through a telephone line in the prior art is limited by a telephone line gateway and the bandwidth of 2G dialing is avoided, and the efficiency of data transmission between the background server and the control module is improved.
The present invention has been described in an illustrative manner by the embodiments, and it should be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, but is capable of various changes, modifications and substitutions without departing from the scope of the present invention.

Claims (8)

1. An electric food cart system comprises a chassis and an upper mounting component, wherein the chassis is connected with the upper mounting component through a fork frame, and the upper mounting component comprises a box body of a food cart and a four-way platform arranged on one side of the box body; the food cart is characterized in that the food cart is an electric-driven vehicle;
the food cart is characterized in that solar panels are arranged on a front engine room cover and a cart door of the food cart, the solar panels are connected with a storage battery arranged on a chassis through wires, and the storage battery and a driving motor are in control connection through a charging control system and a driving control system;
a driving motor is arranged in the middle of the chassis, and an output shaft of the driving motor is in driving connection with the rear wheel;
the structure that the output shaft of driving motor and rear wheel drive are connected does:
the rear wheel is sleeved on the rotating shaft, and an output shaft of the driving motor is connected with the rotating shaft through a coupling device;
the coupling device comprises a pair of lantern rings, a pair of screw rods with external screw openings formed on the outer surfaces, and a pair of reinforcing covers;
the pair of lantern rings are respectively and correspondingly sleeved on the outer surfaces of the output shaft of the driving motor and the rotating shaft which are distributed oppositely, so that the output shaft of the driving motor is connected with the rotating shaft;
the pair of lantern rings are spliced, and are fixedly connected along the direction parallel to the central line of the lantern rings through a pair of screw rods with outer screw openings on the outer surfaces; the pair of lantern rings all constitute through first external member and second external member, each one end of first external member all is via the hinge pin joint with one end of corresponding second external member, each one end of first external member all is equipped with first connector, each one end of second external member all is equipped with the second connector, each all via the hinge pin joint between first connector and the corresponding second connector, each another end of first external member and the another end joint of corresponding second external member, and link firmly along with the direction that the central line is parallel via tight screw that rises.
2. The system of claim 1, wherein the other end of each of the first sleeve members is provided with a third coupling member having a through hole with an internal screw hole formed in an inner surface thereof, the other end of each of the second sleeve members is provided with a fourth coupling member having a through hole with an internal screw hole formed in an inner surface thereof and a locking hole formed therein, and each of the fourth coupling members is locked to the corresponding third coupling member and is engaged with the fourth coupling member by a tightening screw so that the third coupling member and the fourth coupling member are fixedly coupled in a direction parallel to the center line.
3. The electric food cart system of claim 2, wherein the outer surface of each of the first sleeve member and the corresponding second sleeve member is provided with a plurality of first limiting openings for limiting the position of the outer surface of the first sleeve member and the corresponding second sleeve member in a direction towards the center of the first sleeve member and the center of the second sleeve member, and the end walls of the edge portions of each of the first sleeve member and the corresponding second sleeve member are provided with protruding ring-shaped bodies with the same radian.
4. The electric food cart system of claim 3, wherein the outer surface of each raised ring is provided with a plurality of second position-limiting openings for limiting positions in a direction towards the center of the raised ring, and the end walls of each first sleeve and the corresponding second sleeve are provided with first through openings having inner threads on the inner surfaces in a direction parallel to the center line.
5. The electric food cart system of claim 3, wherein a pair of reinforcing covers are fastened between the pair of collars, a plurality of limiting protrusions are arranged on the inner surfaces of the reinforcing covers in a direction towards the center or the center of the reinforcing covers, the limiting protrusions are fastened with the corresponding first limiting opening and the corresponding second limiting opening for limiting, and a second through opening with an internal thread opening is arranged on the inner surface of each reinforcing cover in a direction parallel to the center line.
6. The electric food cart system of claim 3 wherein each of said second through openings having an internal threaded opening on an inner surface thereof is threadably connected to a corresponding first through opening having an internal threaded opening on an inner surface thereof via a threaded rod having an external threaded opening on an outer surface thereof.
7. The electric food cart system of claim 3, wherein a fan-ring-shaped snap-in interface is provided on an inner side end wall of one of said collars, and a fan-ring-shaped snap-in connector is provided on an inner side end wall of the other of said collars, said fan-ring-shaped snap-in connector and fan-ring-shaped snap-in interface being snap-in connected; a plurality of plastic sheets for increasing friction are fixedly connected to the inner surfaces of the first sleeve and the second sleeve; the outer surfaces of the pair of lantern rings are hot-dipped with hot-dip galvanized layers; a charging control system and a driving control system are arranged in a front cabin of the food vehicle;
the upper mounting component and the chassis are respectively provided with a first hydraulic system and a second hydraulic system which are independent of each other; the first hydraulic system is used for driving the upper assembly part to move so as to align a cabin door of the airplane; the second hydraulic system is used for supporting the chassis and driving the fork frame to ascend and descend.
8. The use method of the electric food cart system according to any one of claims 1 to 7, comprising: when the coupling device is used, the output shaft of the driving motor and the rotating shaft are kept at the same central line and are arranged, the pair of lantern rings are respectively sleeved on the outer surface of the output shaft of the driving motor and the outer surface of the rotating shaft, the pair of lantern rings are erected side by side and are screwed tightly to tension screws in sequence, the pair of reinforcing covers are sequentially covered and screwed into a screw rod with an external screw hole in the outer surface, and therefore the corresponding lantern rings are fixed firmly, and the outer surface of the output shaft of the driving motor and the rotating shaft are connected firmly and stably.
CN201911042180.9A 2019-10-30 2019-10-30 Electric food cart system and method thereof Active CN110884676B (en)

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CN208565297U (en) * 2018-07-26 2019-03-01 唐山市方通冶金设备制造有限公司 Shaft end snap ring and shaft end structure
CN110329385A (en) * 2019-08-14 2019-10-15 南京铁道职业技术学院 Equipment for gecko-emulated robot
CN110371314A (en) * 2019-07-23 2019-10-25 江苏天一机场专用设备股份有限公司 A kind of electronic boat food vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2749792Y (en) * 2004-10-28 2006-01-04 中国国际海运集装箱(集团)股份有限公司 Foodstuff vehicle lap-jointing platform
CN208417304U (en) * 2018-06-04 2019-01-22 湖南金诺动力设备制造有限公司 A kind of fast changable formula high-precision shaft coupling
CN208565297U (en) * 2018-07-26 2019-03-01 唐山市方通冶金设备制造有限公司 Shaft end snap ring and shaft end structure
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