A kind of new-energy automobile charging pile
Technical field
The present invention relates to new-energy automobile fields, more particularly to a kind of new-energy automobile charging pile.
Background technology
New energy:Also known as unconventional energy resource.Refer to the various energy forms except traditional energy.Finger just starts to develop and use
Or actively study, need the energy promoted, such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy and nuclear fusion energy
Deng.New-energy automobile gradually replaces orthodox car with many merits such as energy-saving and emission-reduction, environment friendly and pollution-free and is widely used.Charging
Stake is new-energy automobile auxiliary facility, is the carrier to charge for new-energy automobile, however the pilework that charges in tradition is single, position
It is fixed, the position of charging gun can not be adjusted as needed, this just needs to utilize longer charging wire, and longer charging wire is using
When it is easy to wear and be not easy to put back to original position, be easy to happen safety accident.
Invention content
The object of the present invention is to provide a kind of new-energy automobile charging pile, can adjust according to actual needs equipped with charging
The height of the charging gun storage box assembly of gun body and horizontal position so that the charging wire for the gun body that charges is prevented without long
Charging wire is easy to wear or accident easily occurs.
The purpose of the present invention is achieved through the following technical solutions:
A kind of new-energy automobile charging pile, including charging pile body, base board, lifting support component, flexible crossbearer component,
Drive dynamic control device, tensioning driving pulley assembly, charging gun storage box assembly and charging gun body, the charging pile body, which is fixed, to be connected
It is connected on base board;The lifting support component is fixedly connected on base board;One end of the flexible crossbearer component, which is fixed, to be connected
It is connected on the upper end of lifting support component, the other end of flexible crossbearer component is fixedly connected with charging gun storage box assembly;The driving
Control device is connected on lifting support component, drive dynamic control device drive connection lifting support component;The drive control dress
Set connection tensioning driving pulley assembly, the flexible crossbearer component of tensioning driving pulley assembly connection;The lower end of the tensioning driving pulley assembly
It is fixedly connected on lifting support component, the upper end for being tensioned driving pulley assembly is fixedly connected on flexible crossbearer component;It is described to fill
Electric gun body is placed on the inside of charging gun storage box assembly;The charging pile body connects charging gun body by conducting wire.
The lifting support component includes fixed frame plate, L-shaped lateral shelf plate, T-shape ski board, rack and limiting plate;The fixation
The lower end of frame plate is fixedly connected on base board;Two pieces of L-shaped lateral shelf plates, two pieces of L-shaped side frames are fixedly connected on the fixed frame plate
Plate is symmetricly set on the both sides of fixed frame plate;The outside of the T-shape ski board is slidably connected between two pieces of L-shaped lateral shelf plates;
It is fixedly connected with rack on the inside of the T-shape ski board;The bottom end of the T-shape ski board is fixedly connected with limiting plate;The rack engagement connects
Drive dynamic control device is connect, drive dynamic control device is fixedly connected on one piece of L-shaped lateral shelf plate;The upper end of the T-shape ski board, which is fixed, to be connected
Connect flexible crossbearer component.
The flexible crossbearer component include sideslip truss, L-shaped pedestal plate, transmission shaft, drive bevel gear, dynamic bevel gear,
External screw thread rotary shaft, blade fin and internal thread push and pull casing;L-shaped pedestal plate is fixedly connected on sideslip truss;The sideslip
Truss is fixedly connected on the upper end of T-shape ski board;The transmission shaft is rotatably connected on by rolling bearing units on L-shaped pedestal plate, transmission
One end of axis is fixedly connected with tensioning driving pulley assembly, and the other end of transmission shaft is fixedly connected with drive bevel gear, and drive bevel gear is nibbled
Connection dynamic bevel gear is closed, dynamic bevel gear is fixedly connected on one end of external screw thread rotary shaft, and external screw thread rotary shaft is by usheing to seat
Bearing is rotatably connected on L-shaped pedestal plate;The external screw thread rotary shaft is threadedly attached in the inside of internal thread push-and-pull casing,
One end of internal thread push-and-pull casing is fixedly connected with blade fin, and the other end of internal thread push-and-pull casing is fixedly connected with charging gun storage
Box assembly;The charging gun storage box assembly is fixedly connected with sideslip truss;The blade fin sliding connection is in sideslip slot
In the sliding slot of frame.
The drive dynamic control device includes driving motor, drive shaft, driving gear and motor cabinet;The driving motor passes through
Motor cabinet is fixedly connected on one piece of L-shaped lateral shelf plate;The output end of the driving motor connects the one of drive shaft by shaft coupling
End, drive shaft are rotatably assorted by two rolling bearing units and are connected on two pieces of L-shaped lateral shelf plates;The driving gear is fixedly connected on
The middle-end of drive shaft, driving gear engagement connection rack;The other end of the drive shaft is fixedly connected with tensioning driving pulley assembly.
The tensioning driving pulley assembly includes spindle housing, rotary shaft, tensioner arm, upper tensioning wheel, middle tensioning wheel, lower tensioning
Wheel, tightening belt, spring base and extension spring;The spindle housing is fixedly connected on fixed frame plate;The both ends of the rotary shaft
It is rotatably connected in spindle housing by rolling bearing units;One end of the tensioner arm is fixedly connected on the rotary shaft, the upper tensioning
Wheel is fixedly connected on transmission shaft;The lower tensioning wheel is fixedly connected on the driving shaft;The middle tensioning wheel is rotated by wheel shaft
It is connected in the other end of tensioner arm;The upper tensioning wheel, middle tensioning wheel and lower tensioning wheel are sequentially connected by tightening belt;
The spring base is fixedly connected in spindle housing;One end of the extension spring is fixedly connected on spring base, extension spring
The other end is fixedly connected on tensioner arm.
The charging gun storage box assembly includes storage box ontology, overturning chamber door, torsion shaft, fixed block, steady brace, steel
Silk traction rope, traction sheave, fixed plate, movable plate, mandril, tension spring and spherical jacking block;It places the inside of the storage box ontology
There are charging gun body, overturning chamber door to be fixedly connected on torsion shaft, the both ends of torsion shaft are all rotatably connected on by rolling bearing units
Storage box ontology picks and places in mouth;The outer end of the torsion shaft is fixedly connected with traction sheave, and one end of steel wire traction rope, which is fixed, to be connected
It is connected on steady brace, steady brace is fixedly connected on fixed block, and fixed block is fixedly connected on sideslip truss;The steel wire
The other end of traction rope is wrapped on traction sheave;The fixed plate is fixedly connected on storage box ontology, and mandril is slidably matched
It is connected in fixed plate, the upper end of mandril is fixedly connected with movable plate, and the lower end of mandril is fixedly connected with spherical jacking block, spherical jacking block
Lower end block is on overturning chamber door;Tension spring is cased on the mandril, one end of tension spring is fixedly connected on movable plate, tension spring it is another
One end is fixedly connected in fixed plate;The storage box ontology is fixedly connected on internal thread push-and-pull casing.
Beneficial effects of the present invention:A kind of new-energy automobile charging pile of the present invention, can be adjusted according to actual needs
Charging gun equipped with charging gun body stores height and the horizontal position of box assembly so that the charging wire for the gun body that charges was not necessarily to
It is long, it prevents charging wire easy to wear or accident easily occurs;And after adjustment, the overturning chamber door of charging gun storage box assembly can be real
It now automatically turns on, opens without using person, improved work efficiency while saving user's time, and of the invention whole
After being back to original position, overturning chamber door may be implemented to be closed automatically, prevent user from forgetting to close overturning chamber door, can be to charging gun sheet
Body carries out effective protection.
Description of the drawings
Fig. 1 is the overall structure diagram one of the present invention;
Fig. 2 is the overall structure diagram two of the present invention;
Fig. 3 is the overall structure diagram three of the present invention;
Fig. 4 is the structural schematic diagram one of lifting support component inside the present invention;
Fig. 5 is the structural schematic diagram two of lifting support component inside the present invention;
Fig. 6 is the structural schematic diagram one of flexible crossbearer component inside the present invention;
Fig. 7 is the structural schematic diagram two of flexible crossbearer component inside the present invention;
Fig. 8 is the structural schematic diagram of internal drive control device of the present invention;
Fig. 9 is the structural schematic diagram of tensioning driving pulley assembly inside the present invention;
Figure 10 is the structural schematic diagram of charge inside rifle storage box assembly of the present invention.
In figure:Charge pile body 1;Base board 2;Lifting support component 3;Fixed frame plate 3-1;L-shaped lateral shelf plate 3-2;T shapes are slided
Plate 3-3;Rack 3-4;Limiting plate 3-5;Flexible crossbearer component 4;Sideslip truss 4-1;L-shaped pedestal plate 4-2;Transmission shaft 4-3;Transmission
Bevel gear 4-4;Dynamic bevel gear 4-5;External screw thread rotary shaft 4-6;Blade fin 4-7;Internal thread pushes and pulls casing 4-8;Driving control
Device 5 processed;Driving motor 5-1;Drive shaft 5-2;Drive gear 5-3;Motor cabinet 5-4;It is tensioned driving pulley assembly 6;Spindle housing 6-
1;Rotary shaft 6-2;Tensioner arm 6-3;Upper tensioning wheel 6-4;Middle tensioning wheel 6-5;Lower tensioning wheel 6-6;Tightening belt 6-7;Spring base
6-8;Extension spring 6-9;Charging gun stores box assembly 7;Storage box ontology 7-1;Overturn chamber door 7-2;Torsion shaft 7-3;Fixed block
7-4;Steady brace 7-5;Steel wire traction rope 7-6;Traction sheave 7-7;Fixed plate 7-8;Movable plate 7-9;Mandril 7-10;Tension spring 7-
11;Spherical jacking block 7-12.
Specific implementation mode
Invention is further described in detail by 1-10 below in conjunction with the accompanying drawings.
Specific implementation mode one:
As Figure 1-10 shows, a kind of new-energy automobile charging pile, including charging pile body 1, base board 2, lifting support group
Part 3, flexible crossbearer component 4, drive dynamic control device 5, tensioning driving pulley assembly 6, charging gun storage box assembly 7 and charging gun sheet
Body, the charging pile body 1 are fixedly connected on base board 2;The lifting support component 3 is fixedly connected on base board 2;Institute
The one end for stating flexible crossbearer component 4 is fixedly connected on the upper end of lifting support component 3, and the other end of flexible crossbearer component 4 is fixed
It connects charging gun and stores box assembly 7;The drive dynamic control device 5 is connected on lifting support component 3, and drive dynamic control device 5 passes
Dynamic connection lifting support component 3;The connection tensioning driving pulley assembly 6 of the drive dynamic control device 5, tensioning driving pulley assembly 6 connect
Flexible crossbearer component 4;The lower end of the tensioning driving pulley assembly 6 is fixedly connected on lifting support component 3, is tensioned driving wheel group
The upper end of part 6 is fixedly connected on flexible crossbearer component 4;The charging gun body is placed on the interior of charging gun storage box assembly 7
Portion;The charging pile body 1 connects charging gun body by conducting wire.A kind of new-energy automobile charging pile of the present invention, is using
When, height and the horizontal position of the charging gun storage box assembly 7 equipped with charging gun body can be adjusted according to actual needs, made
Must charge gun body charging wire without long, prevent charging wire easy to wear or accident easily occur;When adjusting, driving is controlled
Device 5 processed is connected to power supply and is opened by controlling switch, and drive dynamic control device 5 drives lifting support component 3 to be lifted, and lifts
Bracket component 3 drives the height for the crossbearer component 4 that stretches to change, to which the height for driving charging gun to store box assembly 7 occurs
Variation, makes it higher than the height of conventional new-energy automobile vehicle body, at the same drive dynamic control device 5 drive tensioning driving pulley assembly 6 into
Row work, tensioning driving pulley assembly 6 drive the crossbearer component 4 that stretches to carry out stretching motion, and flexible crossbearer component 4 drives charging gun to deposit
The horizontal position for putting box assembly 7 changes, to drive the horizontal position of the charging gun body inside charging gun storage box assembly 7
It sets and changes, and then play the role of adjusting height and the horizontal position of charging gun body, so that charging gun body is more
It is easy to charge so that the charging wire for the gun body that charges is prevented charging wire easy to wear or accident easily occurs without long;And
After adjustment, the overturning chamber door 7-2 of charging gun storage box assembly 7 may be implemented to automatically turn on, and opens, saves without using person
User improves work efficiency while the time, and after entirety of the invention is back to original position, and overturning chamber door 7-2 may be implemented certainly
It is dynamic to be closed, it prevents user from forgetting to close overturning chamber door 7-2, effective protection can be carried out to charging gun body.
Specific implementation mode two:
As Figure 1-10 shows, the lifting support component 3 includes fixed frame plate 3-1, L-shaped lateral shelf plate 3-2, T-shape ski board 3-
3, rack 3-4 and limiting plate 3-5;The lower end of the fixed frame plate 3-1 is fixedly connected on base board 2;The fixed frame plate 3-1
On be fixedly connected with two pieces of L-shaped lateral shelf plates 3-2, two pieces of L-shaped lateral shelf plate 3-2 and be symmetricly set on the both sides of fixed frame plate 3-1;The T
The outside of shape slide plate 3-3 is slidably connected between two pieces of L-shaped lateral shelf plate 3-2;The inside of the T-shape ski board 3-3, which is fixed, to be connected
Meet rack 3-4;The bottom end of the T-shape ski board 3-3 is fixedly connected with limiting plate 3-5;The rack 3-4 engagements connection drive control dress
5 are set, drive dynamic control device 5 is fixedly connected on one piece of L-shaped lateral shelf plate 3-2;The upper end of the T-shape ski board 3-3, which is fixedly connected, stretches
Contracting crossbearer component 4.The lifting support component 3 when in use, is connected to power supply in drive dynamic control device 5 and is opened by control
In the state of opening, drive dynamic control device 5 carries out elevating movement with carry-over bar 3-4, drives T-shape ski board 3-3 to exist when rack 3-4 is lifted
The internal slide of fixed frame plate 3-1 and L-shaped lateral shelf plate 3-2, to carry out elevating movement, T-shape ski board 3-3 drives crossbearer group of stretching
The progress elevating movement of part 4, so that flexible crossbearer component 4 drives charging gun storage box assembly 7 to carry out elevating movement, realization pair
Charging gun stores the adjusting of 7 height of box assembly, and then the height that 7 charge inside gun body of box assembly is stored to charging gun is adjusted
Section.
Specific implementation mode three:
As Figure 1-10 shows, the flexible crossbearer component 4 include sideslip truss 4-1, L-shaped pedestal plate 4-2, transmission shaft 4-3,
Drive bevel gear 4-4, dynamic bevel gear 4-5, external screw thread rotary shaft 4-6, blade fin 4-7 and internal thread push-and-pull casing 4-8;L
Shape pedestal plate 4-2 is fixedly connected on sideslip truss 4-1;The sideslip truss 4-1 is fixedly connected on the upper end of T-shape ski board 3-3;
The transmission shaft 4-3 is rotatably connected on by rolling bearing units on L-shaped pedestal plate 4-2, and one end of transmission shaft 4-3 is fixedly connected with tensioning
The other end of driving pulley assembly 6, transmission shaft 4-3 is fixedly connected with drive bevel gear 4-4, and drive bevel gear 4-4 engagement connections are passive
Bevel gear 4-5, dynamic bevel gear 4-5 are fixedly connected on one end of external screw thread rotary shaft 4-6, and external screw thread rotary shaft 4-6 passes through band
Seat bearing is rotatably connected on L-shaped pedestal plate 4-2;The external screw thread rotary shaft 4-6 is threadedly attached in internal thread push-and-pull set
One end of the inside of pipe 4-8, internal thread push-and-pull casing 4-8 is fixedly connected with blade fin 4-7, and internal thread pushes and pulls the another of casing 4-8
One end is fixedly connected with charging gun storage box assembly 7;The charging gun storage box assembly 7 is fixedly connected with sideslip truss 4-1;It is described to lead
To slide plate 4-7 sliding connections in the sliding slot of sideslip truss 4-1.The flexible crossbearer component 4 when in use, drive control
While device 5 drives tensioning driving pulley assembly 6 to be worked, tensioning driving pulley assembly 6 drives transmission shaft 4-3 to be rotated,
Transmission shaft 4-3 drives drive bevel gear 4-4 to be rotated, and drive bevel gear 4-4 drives dynamic bevel gear 4-5 to be rotated, quilt
Dynamic bevel gear 4-5 drives external screw thread rotary shaft 4-6 to be rotated, and external screw thread rotary shaft 4-6 is inserted into internal thread push-and-pull when rotating
Length inside casing 4-8 changes, interior to drive internal thread push-and-pull casing 4-8 to be moved outward or inwardly
Blade fin 4-7 is slided on the inside of sideslip truss 4-1 when screw thread push-and-pull casing 4-8 movements, and blade fin 4-7, which is played, to be led
To the effect of limit;The outside that internal thread pushes and pulls casing 4-8 drives charging gun storage box assembly 7 and its charging gun body of inside
Horizontal position change.
Specific implementation mode four:
As Figure 1-10 shows, the drive dynamic control device 5 include driving motor 5-1, drive shaft 5-2, driving gear 5-3 and
Motor cabinet 5-4;The driving motor 5-1 is fixedly connected on by motor cabinet 5-4 on one piece of L-shaped lateral shelf plate 3-2;The driving electricity
The output end of machine 5-1 connects one end of drive shaft 5-2 by shaft coupling, and drive shaft 5-2 is rotatably assorted by two rolling bearing units
It is connected on two pieces of L-shaped lateral shelf plate 3-2;The driving gear 5-3 is fixedly connected on the middle-end of drive shaft 5-2, driving gear 5-3
Engagement connection rack 3-4;The other end of the drive shaft 5-2 is fixedly connected with tensioning driving pulley assembly 6.The drive dynamic control device
5 when in use, and after driving motor 5-1 is opened by wire connecting power and by control switch, driving motor 5-1 drives driving
Axis 5-2 is rotated, and drive shaft 5-2 drives driving gear 5-3 to be rotated, and driving gear 5-3 bands carry-over bar 3-4 is lifted
Movement, to drive lifting support component 3 to work by rack 3-4;The drive shaft 5-2 drives tensioning driving pulley assembly
6 work, and drive the transmission shaft 4-3 inside the crossbearer component 4 that stretches to carry out rotation work by being tensioned driving pulley assembly 6.
Specific implementation mode five:
As Figure 1-10 shows, the tensioning driving pulley assembly 6 include spindle housing 6-1, rotary shaft 6-2, tensioner arm 6-3, on
Tensioning wheel 6-4, middle tensioning wheel 6-5, lower tensioning wheel 6-6, tightening belt 6-7, spring base 6-8 and extension spring 6-9;The shaft
Frame 6-1 is fixedly connected on fixed frame plate 3-1;The both ends of the rotary shaft 6-2 are rotatably connected on spindle housing by rolling bearing units
On 6-1;One end of the tensioner arm 6-3 is fixedly connected on rotary shaft 6-2, and the upper tensioning wheel 6-4 is fixedly connected on transmission
On axis 4-3;The lower tensioning wheel 6-6 is fixedly connected on drive shaft 5-2;The middle tensioning wheel 6-5 is rotatably assorted by wheel shaft
It is connected to the other end of tensioner arm 6-3;The upper tensioning wheel 6-4, middle tensioning wheel 6-5 and lower tensioning wheel 6-6 pass through tightening belt
6-7 is sequentially connected;The spring base 6-8 is fixedly connected on spindle housing 6-1;One end of the extension spring 6-9 is fixedly connected
On spring base 6-8, the other end of extension spring 6-9 is fixedly connected on tensioner arm 6-3.The tensioning driving pulley assembly 6 exists
When work, lower tensioning wheel 6-6 is rotated under the drive of drive shaft 5-2, and lower tensioning wheel 6-6 is driven by tightening belt 6-7
Upper tensioning wheel 6-4 and middle tensioning wheel 6-5 are rotated, and drive transmission shaft 4-3 to carry out rotation work when upper tensioning wheel 6-4 is rotated,
Middle tensioning wheel 6-5 plays the role of tensioning and is oriented to, when lifting support component 3 drives the crossbearer component 4 that stretches constantly to increase, tensioning
Angle between arm 6-3 and spring base 6-8 constantly becomes larger, and extension spring 6-9 is constantly stretched, the position of middle tensioning wheel 6-5 with
The constantly raising of flexible crossbearer component 4 to automatically adjust.
Specific implementation mode six:
As Figure 1-10 shows, the charging gun storage box assembly 7 includes storage box ontology 7-1, overturning chamber door 7-2, overturning
Axis 7-3, fixed block 7-4, steady brace 7-5, steel wire traction rope 7-6, traction sheave 7-7, fixed plate 7-8, movable plate 7-9, top
Bar 7-10, tension spring 7-11 and spherical jacking block 7-12;The inside of the storage box ontology 7-1 is placed with charging gun body, inverted box
Door 7-2 is fixedly connected on torsion shaft 7-3, and the both ends of torsion shaft 7-3 are all rotatably connected on storage box ontology by rolling bearing units
7-1's picks and places in mouth;The outer end of the torsion shaft 7-3 is fixedly connected with traction sheave 7-7, and one end of steel wire traction rope 7-6 is fixed
It is connected on steady brace 7-5, steady brace 7-5 is fixedly connected on fixed block 7-4, and fixed block 7-4 is fixedly connected on sideslip
On truss 4-1;The other end of the steel wire traction rope 7-6 is wrapped on traction sheave 7-7;The fixed plate 7-8 is fixedly connected
On storage box ontology 7-1, on fixed plate 7-8, the upper end of mandril 7-10 is fixedly connected with work for mandril 7-10 sliding connections
The lower end of movable plate 7-9, mandril 7-10 are fixedly connected with spherical jacking block 7-12, and the lower end block of spherical jacking block 7-12 is in overturning chamber door 7-
On 2;Tension spring 7-11 is cased on the mandril 7-10, one end of tension spring 7-11 is fixedly connected on movable plate 7-9, tension spring 7-11's
The other end is fixedly connected on fixed plate 7-8;The storage box ontology 7-1 is fixedly connected on internal thread push-and-pull casing 4-8.Institute
State charging gun storage box assembly 7 when in use, storage box ontology 7-1 under the promotion of internal thread push-and-pull casing 4-8 with sideslip slot
When the distance of frame 4-1 constantly becomes larger, steady brace 7-5 pulls traction sheave 7-7 to be rotated by steel wire traction rope 7-6, from
And drive torsion shaft 7-3 to be rotated by traction sheave 7-7, drive overturning chamber door 7-2 to be turned over when torsion shaft 7-3 is rotated
Turn, user can take out charging gun body from the inside of storage box ontology 7-1 after overturning chamber door 7-2 is opened, and improve work effect
Rate, at this point, overturning chamber door 7-2 pushes spherical jacking block 7-12 upwards, spherical jacking block 7-12 pushes movable plate 7-9 by mandril 7-10
It moves upwards, tension spring 7-11 is stretched when movable plate 7-9 is moved upwards, and mandril 7-10, tension spring 7-11 and spherical jacking block 7-12 rise
To limit block effect, user charge after, can by the elastic force of tension spring 7-11 act on so that spherical shape jacking block 7-12 to
Under push overturning chamber door 7-2 so that overturning chamber door 7-2 is closed and by block.
The operation principle of the present invention is that:A kind of new-energy automobile charging pile of the present invention when in use can be according to reality
Need the height to adjust the charging gun storage box assembly 7 that charging gun body is housed and horizontal position so that charge gun body
Charging wire is prevented charging wire easy to wear or accident easily occurs without long;When adjusting, drive dynamic control device 5 is connected to electricity
Source is simultaneously opened by controlling switch, and drive dynamic control device 5 drives lifting support component 3 to be lifted, and lifting support component 3 drives
The height of flexible crossbearer component 4 changes, and to which the height for driving charging gun to store box assembly 7 changes, makes it higher than
The height of conventional new-energy automobile vehicle body, while drive dynamic control device 5 drives tensioning driving pulley assembly 6 to work, tensioning passes
Drive wheel assemblies 6 drive the crossbearer component 4 that stretches to carry out stretching motion, and the crossbearer component 4 that stretches drives the water of charging gun storage box assembly 7
Prosposition, which is set, to change, to drive the horizontal position of the charging gun body inside charging gun storage box assembly 7 to change, into
And play the role of adjusting height and the horizontal position of charging gun body, so that charging gun body is easier to charge,
It is long so that the charging wire of charging gun body is not necessarily to, prevents charging wire easy to wear or accident easily occurs;And after adjustment, it charges
The overturning chamber door 7-2 of rifle storage box assembly 7 may be implemented to automatically turn on, and is opened without using person, saves user's time
It improves work efficiency simultaneously, and after entirety of the invention is back to original position, overturning chamber door 7-2 may be implemented to be closed automatically, prevent
User, which forgets to close, overturns chamber door 7-2, can carry out effective protection to charging gun body.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made in the essential scope of the present invention also belong to the guarantor of the present invention
Protect range.