CN216915556U

CN216915556U - A fill electric pile for AGV dolly charges

Info

Publication number: CN216915556U
Application number: CN202123014917.1U
Authority: CN
Inventors: 黄界; 窦元林; 谢钦
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-07-08
Anticipated expiration: 2031-12-03

Abstract

The application discloses a fill electric pile for AGV dolly charges includes: the device comprises a shell, a first connecting piece and a second connecting piece, wherein a first through hole is formed in one side of the shell; the charger is arranged inside the shell; the contact structure is positioned in the shell, is connected with the charger and is used for receiving the 24V direct current of the charger; the control assembly is arranged inside the shell; the driving mechanism is arranged in the shell and is connected with the control component; the driving mechanism is connected with the contact structure and used for driving the contact structure to advance, so that the contact structure extends out of the first through hole and is tightly attached to the electrode surface of the AGV trolley. Through control assembly control actuating mechanism, the contact structure extends or moves back to optional position like this, makes the contact structure stretch out first through-hole and closely laminates with the electrode surface of AGV dolly, connects accurately, and simple structure charges conveniently simultaneously.

Description

A fill electric pile for AGV dolly charges

Technical Field

The utility model relates to the technical field of AGV trolley charging, in particular to a charging pile for AGV trolley charging.

Background

Current AGV dolly charging mode is mostly the automatic electric pile that fills of side extension-type, through the sensor that gos forward and retreat the sensor, and control contact structure gos forward and retreat, causes like this that the contact structure can only extend to front end or rear end and just can stop, and the contact structure can't stop in the optional position, causes contact structure and AGV dolly to be connected not accurate enough.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or alleviate the above problems. The technical scheme of the utility model provides a charging pile for charging an AGV (automatic Guided Vehicle), which comprises the following components: the device comprises a shell, a first connecting piece and a second connecting piece, wherein a first through hole is formed in one side of the shell; the charger is arranged inside the shell; the contact structure is positioned in the shell, is connected with the charger and is used for receiving the 24V direct current of the charger; the control assembly is arranged inside the shell; the driving mechanism is arranged in the shell and is connected with the control component; the driving mechanism is connected with the contact structure and used for driving the contact structure to advance, so that the contact structure extends out of the first through hole and is tightly attached to the electrode surface of the AGV trolley.

The application provides a fill electric pile for AGV dolly charges, including casing, machine, control assembly, actuating mechanism and contact structure charge. The AGV comprises a shell, a contact structure, a control assembly, a driving mechanism, a contact structure and a control assembly, wherein the first through hole is formed in one side of the shell and used for extending the contact structure, the charger is installed in the shell, the contact structure is located in the shell and connected with the charger and used for receiving 24V direct current of the charger to charge the AGV, the control assembly is installed in the shell and used for controlling the stroke of the driving mechanism, the driving mechanism is installed in the shell and connected with the control assembly, the driving mechanism is controlled through the control assembly, the contact structure extends or retreats to any position, the contact structure stretches out of the first through hole and is tightly attached to the electrode surface of the AGV, connection is accurate, meanwhile, the structure is simple, and charging is convenient and fast.

In addition, the above technical solution of the present invention may further have the following additional technical features:

in the technical scheme, a switch is installed on the outer wall of the shell and connected with the charger, and the switch is also connected with an external power supply.

In the above technical solution, the control assembly includes; the transformer is connected with the switch; the PLC is connected with the transformer and is used for receiving the output 24V direct current of the transformer; the stepping motor driver is connected with the transformer and used for receiving the 24V direct current output by the transformer, the stepping motor driver is further connected with the PLC and used for receiving the pulse signal of the PLC, and the stepping motor driver is further connected with the driving mechanism and used for driving the driving mechanism.

In the technical scheme, the intelligent power supply device further comprises a radio frequency communication module, wherein the radio frequency communication module is installed inside the shell and connected with a computer, and the computer is connected with the PLC through a communication protocol.

In the technical scheme, the device further comprises a home position sensor, wherein the home position sensor is positioned on one side of the rear part of the driving mechanism and used for sensing the retreating position of the contact structure.

In the above technical solution, the contact structure includes; the feed screw nut pair is connected with the driving mechanism; the insulating rubber base is arranged at the upper part of the screw-nut pair, grooves are symmetrically formed in the upper part and the lower part of the front surface of the insulating rubber base, and a slidable copper electrode plate is arranged in each groove; wherein, the copper electrode board with the electrode surface of AGV dolly closely laminates for charge.

In the technical scheme, first mounting holes are symmetrically formed in the back of the groove, second mounting holes are symmetrically formed in the back end of the copper electrode plate, the first mounting holes and the second mounting holes are coaxially arranged, and the first mounting holes are connected with the second mounting holes through springs and used for providing compression force for the copper electrode plate.

In the above technical scheme, the middle part of the copper electrode plate is provided with a through groove for inserting a plug into the through groove and is connected with the insulating rubber base, so that the copper electrode plate slides along the through groove and the track of the plug.

In the above technical solution, the length of the groove is greater than the length of the copper electrode plate, and the width of the groove is greater than the width of the copper electrode plate.

In the technical scheme, the backward compression amount of the copper electrode plate is 15-20 mm, the left-right swing angle of the copper electrode plate is 10-15 degrees, and the charging current of the charger is 30A.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic junction diagram of a charging post for charging an AGV according to one embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the contact configuration of the charging post for charging an AGV car shown in FIG. 1.

The labels in the figure are:

1. a housing; 1-1, a first through hole; 2. a charger; 3. a contact structure; 3-1, a screw-nut pair; 3-2, an insulating rubber base; 3-3, a groove; 3-4, copper electrode plates; 3-5, a first mounting hole; 3-6, a second mounting hole; 3-7, through grooves; 3-8, a bolt; 3-9, a spring; 3-10, fixing bolts; 4. a control component; 4-1, a transformer; 4-2, a PLC controller; 4-3, a stepping motor driver; 5. a drive mechanism; 6. a switch; 7. a radio frequency communication module; 8. an in-situ sensor.

Detailed Description

The present application will now be described in further detail by way of specific examples with reference to the accompanying drawings. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

Example 1:

FIG. 1 is a schematic diagram of a charging post for charging an AGV according to one embodiment of the present application; FIG. 2 is a schematic cross-sectional view of the contact configuration of the charging post for charging an AGV car shown in FIG. 1. As shown in fig. 1 and 2, in one particular embodiment, a charging post for charging an AGV cart may generally include a housing 1, a charger 2, a contact structure 3, a control assembly 4, and a drive mechanism 5.

In detail, a first through hole 1-1 is formed in one side of the shell 1; the charger 2 is arranged inside the shell 1; the contact structure 3 is positioned in the shell 1, is connected with the charger 2 and is used for receiving the 24V direct current of the charger 2; the control component 4 is arranged inside the shell 1; the driving mechanism 5 is installed inside the housing 1 and connected with the control assembly 4.

The driving mechanism 5 is connected with the contact structure 3 and used for driving the contact structure 3 to move forward, so that the contact structure 3 extends out of the first through hole 1-1 and is tightly attached to the electrode surface of the AGV.

The utility model provides a fill electric pile for AGV dolly charges, including casing 1, machine 2, control assembly 4, actuating mechanism 5 and contact structure 3 charge. The AGV charging device comprises a shell 1, a charging machine 2, a driving mechanism 5, a control assembly 4, a first through hole 1-1, a contact structure 3, a first through hole 1-1, a second through hole 1-1, a contact structure 3, a control assembly 4 and a control assembly, wherein the first through hole 1-1 is formed in one side of the shell 1 and used for extending the contact structure 3, the charging machine 2 is installed inside the shell 1, the contact structure 3 is located inside the shell 1 and connected with the charging machine 2 and used for receiving 24V direct current of the charging machine 2 to charge an AGV, the control assembly 4 is installed inside the shell 1 and used for controlling the stroke of the driving mechanism 5, the driving mechanism 5 is installed inside the shell 1 and connected with the control assembly 4, the control assembly 4 controls the driving mechanism 5, and therefore the contact structure 3 extends or retreats to any position, the contact structure 3 extends out of the first through hole 1-1 to be tightly attached to the electrode surface of the AGV.

In this embodiment, one side of the housing 1 is provided with a first through hole 1-1 for extending the contact structure 3, the other side of the housing 1 is provided with a second through hole for installing the switch 6, and the symmetrical arrangement structure of the first through hole 1-1 and the second through hole is neat and beautiful. The charger 2 is installed on one side of the inside of the shell 1 through bolts, and is convenient to disassemble, assemble and maintain. The contact structure 3 is located inside the shell 1, is electrically connected with the charger 2, is used for receiving 24V direct current of the charger 2, and is used for connecting the contact structure 3 with the AGV for charging. The control assembly 4 is mounted inside the shell 1 through bolts, so that the control assembly is convenient to disassemble, assemble and maintain. The driving mechanism 5 is mounted inside the shell 1 through a bolt, so that the assembly, disassembly and maintenance are convenient, and the driving mechanism 5 is connected with the stepping motor driver 4-3 of the control assembly 4 and used for controlling the driving mechanism 5 to be started and closed so as to control the extending position and the retreating position of the contact structure 3 and achieve the purpose of stopping the contact structure 3 at any position.

Optionally, the housing 1 is a rectangular body.

Optionally, the charging current of the charger 2 is 30A, so that the problem of low charging efficiency can be solved.

Optionally, the driving mechanism 5 is a screw guide rail mechanism for transmission, a stepping motor driver 4-3 is provided for driving, the PLC 4-2 controls the telescopic position of the contact structure 3, and the in-situ sensor 8 performs in-place detection.

Example 2:

as shown in fig. 1, according to an embodiment of the present application, the features defined in any of the above embodiments are included, and optionally: the charging pile for charging the AGV also comprises a switch 6.

In detail, the switch 6 is installed on the outer wall of the shell 1, the switch 6 is connected with the charger 2, and the switch 6 is also connected with an external power supply. 220V alternating current is supplied to the chargers 1 and the transformers 4-1 of 24V through the switch 6, and the switch 6 is installed on one side of the outer portion of the shell 1 through bolts and is connected with the chargers 2 and the transformers 4-1 of 24V respectively.

Example 3:

as shown in fig. 1, according to an embodiment of the present application, the features defined in any of the above embodiments are included, and optionally: the control assembly 4 may generally include a transformer 4-1, a PLC controller 4-2, and a stepper motor driver 4-3.

In detail, the transformer 4-1 is connected with the switch 6; the PLC 4-2 is connected with the transformer 4-1 and used for receiving the 24V direct current output by the transformer 4-1; the stepping motor driver 4-3 is connected with the transformer 4-1 and used for receiving 24V direct current output by the transformer 4-1, the stepping motor driver 4-3 is further connected with the PLC 4-2 and used for receiving pulse signals of the PLC 4-2, and the stepping motor driver 4-3 is further connected with the driving mechanism 5 and used for driving the driving mechanism 5.

In the present embodiment, the transformer 4-1 is connected to the switch 6 through a line for energizing the transformer 4-1. The PLC 4-2 is connected with the transformer 4-1 through a line and used for receiving the 24V direct current output by the transformer 4-1 so as to enable the PLC 4-2 to work. The stepping motor driver 4-3 is connected with the transformer 4-1 through a line and used for receiving 24V direct current output by the transformer 4-1 so as to enable the stepping motor driver 4-3 to work, the stepping motor driver 4-3 is also connected with the PLC 4-2 through a line and used for receiving a pulse signal of the PLC 4-2 and controlling the stepping motor driver 4-3 to start and stop, and the stepping motor driver 4-3 is also connected with the driving mechanism 5 and used for driving the driving mechanism 5 so as to enable the driving mechanism 5 to drive the contact structure 3 to advance and retreat. The PLC 4-2 controls the stepping motor driver 4-3 to start, so that the driving mechanism 5 drives the contact structure 3 to stop at any position, the contact structure 3 is tightly attached to the electrode surface of the AGV trolley, and the connection is accurate.

Example 3:

as shown in fig. 1, according to an embodiment of the present application, the features defined in any of the above embodiments are included, and optionally: the charging pile for charging the AGV further comprises a radio frequency communication module 7 and an in-situ sensor 8.

In detail, the radio frequency communication module 7 is installed inside the housing 1 and connected with a computer, and the computer is connected with the PLC controller 4-2 through a communication protocol. The home position sensor 8 is located on the rear side of the drive mechanism 5 for sensing the retracted position of the contact structure 3.

In this embodiment, the radio frequency communication module 7 is installed inside the housing 1 through a screw, and is in wireless communication connection with a computer to perform related information interaction, and the computer is in wireless connection with the PLC controller 4-2 through a communication protocol to transmit information interaction to the PLC controller 4-2. The home position sensor 8 is located on one side of the rear portion of the driving mechanism 5 and connected with the shell 1 through a bolt, and is used for sensing the retreating position of the contact structure 3 and avoiding retreating over-position.

Optionally, the radio frequency communication module 7 is an existing radio frequency communication module.

Example 4:

as shown in fig. 1 and 2, according to an embodiment of the present application, the features defined in any of the above embodiments are included, and optionally: the contact structure 3 may generally include a lead screw nut pair 3-1, an insulating rubber base 3-2, a groove 3-3, and a copper electrode plate 3-4.

In detail, the feed screw nut pair 3-1 is connected with the driving mechanism 5; the insulating rubber base 3-2 is arranged on the upper part of the screw-nut pair 3-1, the upper part and the lower part of the front of the insulating rubber base 3-2 are symmetrically provided with grooves 3-3, and a slidable copper electrode plate 3-4 is arranged in the groove 3-3;

wherein, the copper electrode plates 3-4 are tightly attached to the electrode surface of the AGV for charging.

In this embodiment, the screw nut pair 3-1 is screwed to the driving mechanism 5, and the screw nut pair 3-1 is advanced or retracted in the axial direction of the driving mechanism 5, so that the contact structure 3 is moved as a whole. The insulating rubber base 3-2 is arranged on the upper part of the screw nut pair 3-1 through a fixing bolt 3-10 to realize the connection of the two, and the insulating rubber base 3-2 moves back and forth along with the screw nut pair 3-1. The upper part and the lower part of the front of the insulating rubber base 3-2 are symmetrically provided with grooves 3-3, the grooves 3-3 are rectangular, the copper electrode plates 3-4 are slidably arranged in the grooves 3-3, and the copper electrode plates 3-4 are used for being connected with an AGV to realize charging.

Alternatively, the insulating rubber mount 3-2 is a rectangular box.

Optionally, a rectangular through hole is processed in the middle of the insulating rubber base 3-2 for reducing the overall weight of the contact structure 3.

Furthermore, the length direction of the screw nut pair 3-1 is consistent with that of the insulating rubber base 3-2, so that the structure is compact and reasonable, and the contact structure 3 can enter and exit the shell 1.

Example 5:

as shown in fig. 1 and 2, according to an embodiment of the present application, including the features defined in any of the above embodiments, and optionally and further: the contact structure 3 further comprises a first mounting hole 3-5, a second mounting hole 3-6 and a spring 3-9.

In detail, a first mounting hole 3-5 is symmetrically arranged behind the groove 3-3, a second mounting hole 3-6 is symmetrically arranged at the rear end of the copper electrode plate 3-4, the first mounting hole 3-5 and the second mounting hole 3-6 are coaxially arranged, and the first mounting hole 3-5 and the second mounting hole 3-6 are connected through a spring 3-9 and used for providing a compression force for the copper electrode plate 3-4.

In this embodiment, a circular or rectangular first mounting hole 3-5 is symmetrically provided behind the recess 3-3 for one end of the spring 3-9 to be inserted into or adhered to the inside of the first mounting hole 3-5 for fixing one end of the spring 3-9. The rear end of the copper electrode plate 3-4 is symmetrically provided with a circular or rectangular second mounting hole 3-6, and the other end of the spring 3-9 is embedded into or bonded with the inside of the second mounting hole 3-6 and used for fixing the other end of the spring 3-9.

The first mounting holes 3-5 and the second mounting holes 3-6 are coaxially arranged, so that the phenomenon that the inward extrusion of the copper electrode plates 3-4 fails due to the inclination of the springs 3-9 is avoided, the problem that the springs 3-9 are unevenly stressed and extruded to deform is solved, the copper electrode plates 3-4 are flexibly connected with the grooves 3-3 through the springs 3-9, and the compression force is provided for the copper electrode plates 3-4.

Wherein, the backward compression amount of the copper electrode plate 3-4 is 15mm-20mm, preferably, the backward compression amount of the copper electrode plate 3-4 is 15 mm.

Further, the length of the groove 3-3 is larger than that of the copper electrode plate 3-4, the width of the groove 3-3 is larger than that of the copper electrode plate 3-4, and flexible contact with an electrode on the AGV trolley body is achieved.

Optionally, the left-right swinging angle of the copper electrode plates 3-4 is 10-15 degrees.

Example 6:

as shown in fig. 1 and 2, according to one embodiment of the present application, the features defined in any of the above embodiments are included, and optionally: the contact structure 3 further comprises through slots 3-7 and pins 3-8.

In detail, the middle of the copper electrode plate 3-4 is provided with a through groove 3-7 for inserting a plug pin 3-8 into the through groove 3-7, and is connected with the insulating rubber base 3-2, so that the copper electrode plate 3-4 slides along the track of the through groove 3-7 and the plug pin 3-8.

In the embodiment, the middle part of the copper electrode plate 3-4 is provided with a rectangular through groove 3-7, and the length direction of the through groove 3-7 is consistent with the length direction of the copper electrode plate 3-4, so that the bolt 3-8 can slide in the through groove 3-7. The plug pins 3-8 are inserted into the through grooves 3-7 and are in threaded connection with the insulating rubber bases 3-2, so that the plug pins 3-8 slide along the tracks of the through grooves 3-7, the copper electrode plates 3-4 can slide back and forth and are in flexible connection, and the purpose that the copper electrode plates 3-4 are slidably mounted in the grooves 3-3 is achieved. The copper electrode plate 3-4 has a compression stroke, and the copper electrode plate 3-4 has a floating gap and has flexible extension distance which is adjustable.

When in specific use:

the charging pile is controlled by a PLC (programmable logic controller) 4-2, when an AGV (automatic guided vehicle) arrives at a designated position, a radio frequency communication module 7 receives an arrival instruction, the PLC 4-2 sends a fixed pulse to a stepping motor driver 4-3, and a contact structure 3 arranged on a screw nut pair 3-1 is enabled to extend forwards through a driving mechanism 5, namely transmission of a screw guide rail mechanism.

Compression springs are arranged on two sides of the back of the copper electrode plate 3-4, a plug pin 3-8 is designed in the middle for guiding, the copper electrode plate 3-4 has a compression stroke, and the copper electrode plate 3-4 has a floating gap. After the copper electrode plate 3-4 contacts the electrode of the AGV, the copper electrode plate 3-4 continues to extend out to enable the copper electrode plate 3-4 to compress the spring 3-9, so that the surface of the copper electrode plate 3-4 is tightly attached to the electrode surface of the AGV.

After the copper electrode plates 3-4 are attached to the electrodes of the AGV, the charger 2 is connected with a power supply, and outputs a large current of 24V30A to charge the AGV.

After the AGV trolley meets the charging requirement, the computer, namely the upper system sends an instruction to the PLC 4-2 of the charging pile, and the PLC 4-2 of the charging pile receives the instruction and then controls the contact structure 3 to retract so as to complete the charging process.

The driving mechanism 5 and the copper electrode plates 3-4 have the following characteristics:

the stroke of the driving mechanism 5 can be changed by adjusting the pulse equivalent of the PLC 4-2, the charging requirements of AGV trolleys of different types are met, the copper electrode plates 3-4 are provided with compression strokes and floating clearance designs, good contact and high current output are guaranteed, and the charging efficiency is high.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A fill electric pile for AGV dolly charges which characterized in that includes:

the device comprises a shell (1), wherein a first through hole (1-1) is formed in one side of the shell (1);

the charger (2) is arranged inside the shell (1);

the contact structure (3) is positioned in the shell (1), is connected with the charger (2) and is used for receiving 24V direct current of the charger (2);

a control assembly (4) mounted inside the housing (1);

the driving mechanism (5) is arranged in the shell (1) and is connected with the control component (4);

the driving mechanism (5) is connected with the contact structure (3) and is used for driving the contact structure (3) to advance so that the contact structure (3) extends out of the first through hole (1-1) and is tightly attached to the electrode surface of the AGV trolley;

the contact structure (3) comprises;

the feed screw nut pair (3-1) is connected with the driving mechanism (5);

the insulating rubber base (3-2) is arranged at the upper part of the screw-nut pair (3-1), grooves (3-3) are symmetrically formed in the upper part and the lower part of the front of the insulating rubber base (3-2), and a slidable copper electrode plate (3-4) is arranged in each groove (3-3);

the copper electrode plates (3-4) are tightly attached to the electrode surface of the AGV trolley and used for charging.

2. The charging post for charging AGV carts of claim 1 further including:

switch (6) is installed to the outer wall of casing (1), switch (6) with machine (2) are connected charges, switch (6) still are connected with external power source.

3. The charging post for charging AGV carts as claimed in claim 2, wherein:

the control assembly (4) comprises;

a transformer (4-1) connected to the switch (6);

the PLC (4-2) is connected with the transformer (4-1) and is used for receiving the 24V direct current output by the transformer (4-1);

the stepping motor driver (4-3) is connected with the transformer (4-1) and used for receiving 24V direct current output by the transformer (4-1), the stepping motor driver (4-3) is further connected with the PLC (4-2) and used for receiving pulse signals of the PLC (4-2), and the stepping motor driver (4-3) is further connected with the driving mechanism (5) and used for driving the driving mechanism (5).

4. The charging post for charging AGV carts as claimed in claim 3, wherein:

the PLC is characterized by further comprising a radio frequency communication module (7), wherein the radio frequency communication module (7) is installed inside the shell (1) and connected with a computer, and the computer is connected with the PLC (4-2) through a communication protocol.

5. The charging post for charging AGV carts of claim 1 wherein:

the contact structure is characterized by further comprising a home position sensor (8), wherein the home position sensor (8) is located on one side of the rear portion of the driving mechanism (5) and used for sensing the retreating position of the contact structure (3).

6. The charging post for charging AGV carts of claim 1 further including:

first mounting holes (3-5) are symmetrically formed in the rear of the groove (3-3), second mounting holes (3-6) are symmetrically formed in the rear ends of the copper electrode plates (3-4), the first mounting holes (3-5) and the second mounting holes (3-6) are coaxially arranged, and the first mounting holes (3-5) and the second mounting holes (3-6) are connected through springs (3-9) and used for providing compression force for the copper electrode plates (3-4).

7. The charging post for charging AGV carts of claim 1 further including:

the middle part of the copper electrode plate (3-4) is provided with a through groove (3-7) for inserting a plug pin (3-8) into the through groove (3-7) and is connected with the insulating rubber base (3-2), so that the copper electrode plate (3-4) slides along the track of the through groove (3-7) and the plug pin (3-8).

8. The charging post for charging AGV carts of claim 1 further including:

the length of the groove (3-3) is larger than that of the copper electrode plate (3-4), and the width of the groove (3-3) is larger than that of the copper electrode plate (3-4).

9. The charging post for charging AGV carts of claim 1 further including:

the backward compression amount of the copper electrode plates (3-4) is 15-20 mm, the left-right swing angle of the copper electrode plates (3-4) is 10-15 degrees, and the charging current of the charger (2) is 30A.