CN115208015A

CN115208015A - Positive-pressure wired charging cabin

Info

Publication number: CN115208015A
Application number: CN202210845945.8A
Authority: CN
Inventors: 赵骁翔; 宁景涛; 常明
Original assignee: Shanghai Dongting Automation Technology Co ltd
Current assignee: Shanghai Dongting Automation Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-10-18

Abstract

The invention discloses a positive-pressure wired charging cabin which comprises a positive-pressure shell, wherein a hollow positive-pressure cavity is arranged in the positive-pressure shell, one end of the positive-pressure cavity is opened, the opening end of the positive-pressure cavity is sealed by a positive-pressure cabin cover, and the positive-pressure cabin cover is assembled with the positive-pressure shell in a sealing way; a charging end is arranged in the positive pressure cavity, a power receiving end is arranged on the positive pressure cabin cover, and the charging end and the power receiving end can be charged outwards through the power receiving end after being compressed and conducted; the charging end comprises a charging shell, a hollow charging cavity is arranged in the charging shell, an insulating panel is arranged on the charging shell and seals the opening end of the charging cavity, a charging electrode and an explosion-proof proximity sensor are respectively arranged on the insulating panel, and the charging electrode is electrically connected with a cable; explosion-proof proximity sensor with install the response piece cooperation on the end that receives electricity to detect explosion-proof proximity sensor and the distance of response piece, whether compress tightly electrically conductive foundation as end, the end that receives electricity of charging. The charging end and the receiving end of the invention adopt a physical separation design, and can realize physical separation in emergency.

Description

Positive-pressure wired charging cabin

Technical Field

The invention relates to a charging technology, in particular to a positive-voltage wired charging cabin.

Background

Charging in an environment with more dust and combustible gas, and if protective measures are not taken, electric sparks, static electricity and the like generated in the charging process can easily ignite surrounding combustible substances to cause explosion. Therefore, in these special environments, explosion-proof design of the charging equipment is required, and the positive-pressure charging cabin is a common means at present, and is mainly characterized in that a part of the charging equipment, which is easy to generate electric sparks and static electricity, is placed in a sealed cabin body, and then the cabin body is filled with explosion-proof (non-combustible) gas, such as nitrogen, carbon dioxide and the like, so as to realize an explosion-proof function.

However, the charging terminal is basically directly connected to the power source, and the charging terminal is fixed, so that the connection between the charging terminal and the external device cannot be quickly and physically cut off in case of emergency, and thus, a serious accident may be caused by the fact that the charging terminal cannot be timely and physically cut off in case of an accident.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a positive voltage wired charging cradle with a movable charging terminal capable of physically disconnecting from an external device.

In order to achieve the purpose, the invention provides a positive-pressure wired charging cabin which comprises a positive-pressure shell, wherein a hollow positive-pressure cavity is arranged in the positive-pressure shell, one end of the positive-pressure cavity is opened, the opening end of the positive-pressure cavity is sealed through a positive-pressure cabin cover, and the positive-pressure cabin cover is assembled with the positive-pressure shell in a sealing manner; a charging end is arranged in the positive pressure cavity, a power receiving end is arranged on the positive pressure cabin cover, and the charging end and the power receiving end are compressed to conduct electricity and then can be charged outwards through the power receiving end;

the charging end comprises a charging shell, a hollow charging cavity is arranged in the charging shell, an insulating panel is arranged on the charging shell and seals the opening end of the charging cavity, a charging electrode and an explosion-proof proximity sensor are respectively arranged on the insulating panel, and the charging electrode is electrically connected with a cable; explosion-proof proximity sensor with install the response piece cooperation on the end that receives electricity to detect explosion-proof proximity sensor and the distance of response piece, whether compress tightly electrically conductive foundation as end, the end that receives electricity of charging.

As a further improvement of the invention, a charging connecting seat is arranged on the charging shell, the charging connecting seat is assembled with one end of a jacking cylinder shaft, the other end of the jacking cylinder shaft penetrates out of a positive pressure shell and then is arranged in a jacking cylinder, and the jacking cylinder is arranged on the positive pressure shell; the jacking cylinder shaft and the positive pressure shell are sealed and can be assembled in an axial sliding mode.

As a further improvement of the invention, the outer wall of the charging shell is also provided with a guide limit bushing which is sleeved on the guide shaft in an axially sliding manner, one end of the guide shaft is arranged in the guide shaft seat and is fixedly assembled with the guide shaft seat, and the guide shaft seat is arranged in the positive pressure shell.

As a further improvement of the invention, the invention also comprises a base, a mounting rack, a positive pressure shell and a lifting cylinder, wherein the mounting rack is arranged on the base, the shell of the lifting cylinder is arranged on the mounting rack, and a lifting cylinder shaft of the lifting cylinder is assembled with the positive pressure shell.

As a further improvement of the invention, a switch frame is also arranged in the positive pressure cavity, an explosion-proof travel switch is arranged on the switch frame, the triggering end of the explosion-proof travel switch is opposite to the positive pressure cabin cover, and the explosion-proof travel switch can be triggered after the positive pressure shell moves to the right position of the positive pressure cabin cover.

As a further improvement of the invention, the positive pressure shell is also respectively provided with an exhaust joint, an air inlet joint, a pressure relief joint and a sensor pipe joint, the exhaust joint and the pressure relief joint are respectively provided with an exhaust valve and a pressure relief valve, the exhaust valve is used for exhausting air in the positive pressure cavity, and the pressure relief valve is automatically opened to relieve pressure when the air pressure in the positive pressure cavity is too high; the air inlet joint is communicated with the air inlet pipe, so that air is supplied to the positive pressure cavity through the air inlet pipe; the sensor pipe joint is communicated with one end of the sensor pipe, and the other end of the sensor pipe is communicated with an air inlet interface of the pressure sensor.

As a further improvement of the invention, the power receiving end comprises a power receiving shell, a power receiving assembly and an explosion-proof shell cover, wherein a hollow power receiving cavity is arranged in the power receiving shell, one end of the power receiving cavity, which faces the charging end, is opened, and the opening end of the power receiving cavity is closed by the explosion-proof shell cover;

the power receiving assembly comprises a power receiving electrode, a copper bar, a first insulating bush and a second insulating bush, wherein the first insulating bush and the second insulating bush are made of insulating materials; the first insulating bush is sleeved outside the copper rod, and two ends of the copper rod respectively penetrate through two ends of the first insulating bush; the first insulating bush is sleeved with a metal bush, the metal bush is mounted on the power receiving shell, and the first insulating bush and the metal bush are assembled in a sealing and axially sliding mode; the second insulating bush is arranged on the spring baffle plate, the second insulating bush is sleeved outside the power receiving electrode and can be assembled with the power receiving electrode in an axial sliding mode, and two ends of the power receiving electrode penetrate out of the second insulating bush respectively; in the initial state, the copper rod is not in contact with the power receiving electrode for conducting electricity; when the power receiving end and the charging end are pressed to conduct electricity, two ends of the copper rod are respectively pressed to conduct electricity with the charging electrode and the power receiving electrode.

As a further improvement of the invention, a first bushing convex ring is arranged on the first insulating bushing, and the first bushing convex ring cannot penetrate through the metal bushing;

one end of the power receiving electrode, which is far away from the copper rod, penetrates through the second insulating bush and then is assembled with the electrode nut, and the electrode nut cannot be arranged in the second insulating bush so as to limit the maximum displacement point of the power receiving electrode moving to the copper rod;

one end, far away from the copper bar, of the second insulating bush penetrates through the spring baffle plate and then is assembled with the bush nut, and the bush nut cannot penetrate through the spring baffle plate, so that the maximum displacement point of the second insulating bush to the copper bar is limited;

a second bushing convex ring is further arranged at one end, close to the copper bar, of the second insulating bushing, an electrode end ring is arranged at one end, close to the copper bar, of the power receiving electrode, a second power receiving spring is sleeved on the part, located between the second bushing convex ring and the electrode end ring, of the power receiving electrode, and the second power receiving spring is used for applying thrust to the power receiving electrode to move towards the copper bar;

install first receiving spring between spring baffle and the first bush bulge loop, first receiving spring is used for exerting the elasticity that promotes to the end of charging to first insulation bush.

As a further improvement of the invention, the dustproof device also comprises a dustproof assembly, wherein the dustproof assembly comprises a dustproof mounting seat, the dustproof mounting seat is hinged with one end of a connecting rod, the other end of the connecting rod is hinged with a dustproof cover, and at least two connecting rods are arranged; the dustproof cover can shield the power receiving end;

but one of them connecting rod and dustproof axle circumferencial rotation assembly, but dustproof axle and the assembly of dustproof cylinder axle's one end circumferencial rotation, the other end of dustproof cylinder axle is packed into in the dustproof cylinder, and dustproof cylinder is articulated with the cylinder block, and the cylinder block is installed on the base.

As a further improvement of the invention, the dustproof air cylinder further comprises a linkage valve which is connected in series on an air path of the dustproof air cylinder; the linkage valve comprises a valve shell, a hollow valve cavity is arranged in the valve shell, and a communicating groove is formed in the inner wall of the valve cavity; the valve cavity is provided with a sealing shaft sleeve and a valve seat at two ends of the communicating groove respectively, the part of the valve cavity between the sealing shaft sleeve and the valve seat is sealed with the valve core and can be assembled in a sliding way, the end surface of the valve core is tightly pressed and sealed with a sealing gasket, and the sealing gasket is arranged on the valve seat;

the valve cavity is positioned at one end of the valve seat and communicated with the access end pipe, and is positioned at the communicating groove and communicated with the outlet end pipe, and the communicating groove is used for communicating the valve cavities at two sides of the valve core; the valve core is assembled with one end of the valve rod, the other end of the valve rod penetrates out of the sealing shaft sleeve after being sleeved with the first spring, and the valve rod is assembled with the sealing shaft sleeve in a sealing and axially sliding mode;

a valve rod groove is formed in one end, penetrating out of the sealing shaft sleeve, of the valve rod, a valve rod groove inclined plane is arranged on the valve rod groove, and the part, provided with the valve rod groove, of the valve rod is arranged in the linkage shell;

the linkage shell is internally provided with a linkage sliding chute which is clamped with the wedge block and can be assembled in a sliding manner, the wedge block is provided with a wedge block end face and a wedge block inclined face, one end of the wedge block is arranged in the valve rod groove, and the wedge block inclined face of the wedge block is jointed with the valve rod groove inclined face and can be assembled in a sliding manner;

the wedge-shaped block is assembled with one end of the linkage rod, the other end of the linkage rod penetrates through the linkage shell and then is assembled with the linkage push plate, a second spring is sleeved on the portion, located between the linkage shell and the linkage push plate, of the linkage rod, and the second spring is used for applying elastic force far away from the linkage shell to the linkage push plate.

The invention has the beneficial effects that:

1. the charging end and the receiving end of the invention adopt a physical separation design, and can realize physical separation in case of emergency, thereby reducing the loss possibly caused by faults. In addition, the charging end adopts the jacking cylinder to move and the mode of installing the explosion-proof proximity sensor to detect the distance between the charging end and the receiving end and to press the charging end or not, so that the charging end can be supplied with power relatively accurately, and misoperation is avoided.

2. The power receiving end of the invention adopts a mode that the power receiving components and the charging electrodes are pressed and conducted one by one, and the power receiving electrode and the copper rod of each power receiving component are buffered and kept pressed through the spring. The design can avoid the damage caused by collision among the charging electrode, the copper bar and the receiving electrode on the one hand, and can ensure that the copper bar is respectively kept to be compressed and conducted with the charging electrode and the receiving electrode on the other hand.

3. The invention is additionally provided with the dustproof assembly, and the dustproof assembly can prevent foreign matters from polluting the power receiving end in a mode that the dustproof cover can shield the power receiving end, so that potential safety hazards and faults caused by the fact that the foreign matters enter the power receiving end and the positive pressure shell can be effectively avoided.

4. According to the charging safety system, the explosion-proof flow sensor and the pressure sensor are arranged to detect the airflow flow discharged from the positive pressure shell and the air pressure in the positive pressure shell, so that whether the positive pressure shell is seriously heated or explodes can be deduced, once the positive pressure shell is judged to be seriously heated or explode, the non-combustible gas is input into the positive pressure shell to discharge the dangerous gas in the positive pressure shell, the probability of explosion is reduced, and the safety is improved.

5. The invention also provides a dust guard mechanism in the positive pressure cavity, and the dust guard mechanism utilizes the dust guard to shield the end surface of the power receiving end, thereby effectively preventing dust at the power receiving end. And the dust guard open utilize charge hold on the gyro wheel can, simple structure just can prevent to charge the end and take place the striking with the dust guard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of the construction of the present invention (dust cover 150 closed);

FIG. 5 is a schematic structural view of the present invention (a cross-sectional view taken at the center plane of the axis of the lift cylinder shaft 231);

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a schematic structural view of the present invention (a cross-sectional view at another center plane where the axis of the lift cylinder shaft 231 is located);

FIG. 8 is a schematic illustration of the arrangement with the dust cap assembly, positive pressure hatch 170, removed;

FIG. 9 is a schematic illustration of the arrangement with the dust seal assembly, positive pressure hatch 170 removed;

FIG. 10 is a schematic structural view with the dust-proof assembly, the positive pressure hatch 170, the positive pressure housing 160, and the lift cylinder 220 removed;

fig. 11 is a schematic structural view of the power receiving terminal 500;

fig. 12 is a schematic structural view of the power receiving terminal 500;

fig. 13 is a schematic view of the internal structure of the power receiving terminal 500;

fig. 14 is a cross-sectional view of the power receiving component at the central plane of the axis of the power receiving electrode 531;

fig. 15 is a schematic structural view of charging terminal 600;

fig. 16 is a sectional view of the charging terminal 600 at a central plane of the axis of the charging housing 610;

fig. 17 is a sectional view of charging terminal 600 at a central plane of the axis of guide shaft 330;

FIG. 18 is a schematic structural view of a linkage valve (a cross-sectional view of a central plane of the axis of the valve stem 350);

FIG. 19 is an enlarged view at B of FIG. 18;

FIG. 20 is a schematic view of the charging safety system of the present invention;

FIG. 21 is a schematic structural view of a dust guard mechanism;

FIG. 22 is a schematic structural view of a dust guard mechanism;

fig. 23 is a schematic view of the structure of the dust-proof plate mechanism (charging terminal 600 is removed);

fig. 24 is a schematic structural view of the dust guard 930, the charging terminal 600, and the receiving terminal 500;

FIG. 25 is a schematic view of the dust guard mechanism;

fig. 26 is a schematic structural view of the dust guard mechanism (the slide rail case 920 is removed);

fig. 27 is a schematic structural view of the dust guard 930 and the slide rail case 920;

fig. 28 is a schematic structural view of the dust guard 930 and the slide rail case 920;

fig. 29 is a schematic structural view of the dust guard 930 and the slide rail case 920;

fig. 30 is a schematic view of a modified structure at the stopper 932.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 5, the wired positive pressure charging cabin comprises a base 110, a mounting frame 120, a positive pressure shell 160, a lifting cylinder 220 and a dustproof assembly, wherein the mounting frame 120 is mounted on the base 110, a shell of the lifting cylinder 220 is mounted on the mounting frame 120, and a lifting cylinder shaft 221 of the lifting cylinder 220 is assembled with the positive pressure shell 160. During the use, lift cylinder 220 drive lift cylinder shaft 221 is flexible axially to drive malleation casing 160 synchronous lift.

The inside hollow positive pressure chamber 161 that is of positive pressure casing 160, install switch frame 190, charge end 600 in the positive pressure chamber 161, install explosion-proof travel switch 250 on the switch frame 190, explosion-proof travel switch 250's trigger end is just to positive pressure hatch cover 170, positive pressure hatch cover 170 assembles through sealing strip 180 and positive pressure casing 160 to realize the seal assembly of positive pressure hatch cover 170 and positive pressure casing 160. Preferably, the sealing strip 180 is resilient, preferably hollow inside and filled with gas, which is advantageous in that it provides a shock absorbing, squeeze sealing strip 180 seal between the positive pressure housing 160 and the positive pressure hatch 170 during use. Preferably, there are four explosion-proof travel switches 250, and the four explosion-proof travel switches are respectively located at four inner walls in the positive pressure chamber 161, and when all of the four explosion-proof travel switches 250 are triggered, it is determined that the distance between the positive pressure hatch 170 and the positive pressure housing 160 is the minimum, and at this time, the jacking cylinder 230 can be started to prepare for charging. Because during the use, the positive pressure hatch 170 can compress tightly with the equipment that needs to charge, so lift cylinder 220 drive positive pressure casing 160 can make positive pressure hatch 170 compress tightly with the equipment that needs to charge gradually when moving to the equipment that needs to charge, then can make positive pressure casing 160 extrusion sealing strip 180 move to positive pressure hatch 170 along with the removal of positive pressure casing 160, and positive pressure hatch 170 can not remove this moment, is triggered up to four explosion-proof travel switches are all. If one or more explosion-proof travel switches are not triggered, the positive pressure shell 160 and the positive pressure cabin cover 170 are judged not to be matched in place, the jacking cylinder cannot be started and charging cannot be carried out at the moment, and the maintenance is carried out by workers.

Still install exhaust joint 413, air inlet joint 411, pressure release joint 412, sensor coupling 414 on the malleation casing 160 respectively, exhaust joint 413, pressure release joint 412 are last to install discharge valve, relief valve respectively, discharge valve is used for the gas outgoing in the malleation chamber 161, the relief valve is opened in order to carry out the pressure release voluntarily when malleation chamber 161 internal gas pressure is too high. The air inlet joint 411 is communicated with an air inlet pipe so as to supply air into the positive pressure cavity 161 through the air inlet pipe, the sensor pipe joint 414 is communicated with one end of the sensor pipe 241, and the other end of the sensor pipe 241 is communicated with an air inlet interface of the pressure sensor 240, so that the pressure sensor can detect air pressure in the positive pressure cavity 161.

Referring to fig. 5-7, the charging terminal 600 includes a charging housing 610, an insulating panel 620 and a charging connection base 650 are respectively mounted on two ends of the charging housing 610, the charging connection base 650 is assembled with one end of the jacking cylinder shaft 231, the other end of the jacking cylinder shaft 231 penetrates through the positive pressure housing 160 and then is mounted in the jacking cylinder 230, and the jacking cylinder 230 is mounted on the positive pressure housing 160. The jacking cylinder shaft 231 is sealed and axially slidably assembled with the positive pressure housing 160.

Referring to fig. 15-17, a hollow charging cavity 611 is formed in the charging housing 610, an insulating panel 620 closes an open end of the charging cavity 611, and a charging electrode 640 and an explosion-proof proximity sensor 630 are respectively mounted on the insulating panel 620, wherein the charging electrode 640 is electrically connected to a cable so that current can be introduced into the charging electrode 640 to charge the outside. The anti-explosion proximity sensor 630 employs an inductive proximity sensor, which is matched with the sensing block 570 installed on the power receiving terminal 500, so as to detect the distance between the anti-explosion proximity sensor 630 and the sensing block 570, that is, the distance between the end of the charging terminal 600 and the end of the power receiving terminal 500, so as to determine whether the charging electrode 640 and the copper bar 532 are compressed and electrically conducted in the axial direction, thereby providing a determination basis for subsequent power supply.

Preferably, the charging shell 610 is further provided with a through outlet hole 612, and the outlet hole 612 is used for allowing a cable to pass through, so that the cable is convenient to be inserted into the charging cavity 611.

Preferably, the outer wall of the charging housing 610 is further provided with a guiding limiting bushing 613, the guiding limiting bushing 613 is axially slidably sleeved on the guiding shaft 330, one end of the guiding shaft 330 is installed in the guiding shaft seat 331 and is fixedly assembled with the guiding shaft seat 331, and the guiding shaft seat 331 is installed in the positive pressure housing 160. When the jacking cylinder 230 drives the charging terminal 600 to move, the charging terminal 600 can guide the moving direction thereof through the guide shaft 330, so as to ensure that the charging electrode 640 is coaxial with (opposite to) the corresponding power receiving electrode 530. The guide shaft seat 331 has an outer diameter greater than that of the guide shaft 330, so that a maximum displacement point at which the guide limit bushing 613 moves toward the lift-up cylinder 230 can be limited, thereby limiting the charging terminal 600.

Referring to fig. 1-14, the power receiving end 500 includes a power receiving housing 510, a power receiving component, an explosion-proof housing cover 590, and an explosion-proof glan head 520, the explosion-proof glan head 520 is mounted on the power receiving housing 510, and a charging cable passes through the explosion-proof glan head 520 and then is electrically connected to the electric electrode 531, so that a device to be charged can be charged through the power receiving electrode 531 and the charging cable, and the explosion-proof glan head 520 is used for locking the charging cable.

The inside hollow power receiving cavity 511 that is of power receiving shell 510, the one end opening and the open end that power receiving cavity 511 faces charging end 600 are sealed through explosion-proof shell cover 590, install power receiving component, spring baffle 580 in the power receiving cavity 511, spring baffle 580 installs on explosion-proof shell cover 590, and it is fixed with the assembly of malleation cabin cover 170 at explosion-proof shell cover 590.

The power receiving assembly comprises a power receiving electrode 531, a copper rod 532, a first insulating bush 540 and a second insulating bush 560, wherein the first insulating bush 540 and the second insulating bush 560 are made of insulating materials. The first insulating bush 540 is sleeved outside the copper bar 532, and two ends of the copper bar 532 respectively penetrate through two ends of the first insulating bush 540; the first insulating bush 540 is provided with a first bush bulge ring 541, the first insulating bush 540 is further sleeved with a metal bush 501, the metal bush 501 is mounted on the power receiving shell 510, the first insulating bush 540 and the metal bush 501 are assembled in a sealing and axially sliding mode, and the first bush bulge ring 541 cannot penetrate through the metal bush 501.

The second insulating bush 560 is mounted on the spring baffle 580, the second insulating bush 560 is sleeved outside the power receiving electrode 531 and can be assembled with the power receiving electrode 531 in an axial sliding manner, two ends of the power receiving electrode 531 respectively penetrate through the second insulating bush 560, one end, far away from the copper bar 532, of the power receiving electrode 531 penetrates through the second insulating bush 560 and then is assembled with the electrode nut 5312, and the electrode nut 5312 cannot be mounted in the second insulating bush 560, so that the maximum displacement point of the power receiving electrode 531 towards the copper bar is limited.

The end of the second insulating bush 560 remote from the copper bar 532 passes through the spring stop 580 and is then fitted with a bush nut 561, which cannot pass through the spring stop 580, thereby limiting the maximum displacement point of the second insulating bush 560 towards the copper bar.

The end, close to the copper bar 532, of the second insulating bush 560 is further provided with a second bush protruding ring 562, one end, close to the copper bar 532, of the power receiving electrode 531 is provided with an electrode end ring 5311, a second power receiving spring 552 is sleeved on a part, located between the second bush protruding ring 562 and the electrode end ring 5311, of the power receiving electrode 531, and the second power receiving spring 552 is used for applying a pushing force, moving towards the copper bar 532, to the power receiving electrode 531, but due to the limitation of the electrode nut 5312, the maximum displacement point, moving towards the copper bar 532, of the power receiving electrode 531 in the initial state can be limited.

A first power receiving spring 551 is installed between the spring baffle 580 and the first bushing convex ring 541, and the first power receiving spring 551 is used for applying an elastic force to the first insulating bushing 540 to push the charging terminal 500, but since the first bushing convex ring 541 can not pass through the metal bushing 501, a maximum displacement point of the first insulating bushing 540 and the copper bar 532 to the charging terminal 500 can be limited. Preferably, the first power receiving spring 551 is sleeved outside the second insulating bush 560, the power receiving electrode 531, the copper bar 532 and the first insulating bush 540 between the spring baffle 580 and the first bush convex ring 541. In the initial state, the copper bar 532 is not in contact with the power receiving electrode 531 and is electrically conductive.

The charging process of this embodiment is as follows:

1. the lifting cylinder 220 is started, so that the positive pressure shell 160 is driven to move upwards until the four explosion-proof travel switches 250 are triggered;

2. the explosion-proof proximity sensor 630 is activated to start detecting the distance from the sensing block 570; and starting the jacking cylinder 230, wherein the jacking cylinder 230 drives the charging end 600 to move upwards until the explosion-proof proximity sensor 630 detects that the distance between the explosion-proof proximity sensor and the induction block 570 reaches a preset threshold value, and then stopping. In this process, the charging electrode 640 gradually moves towards the corresponding copper bar 532 until contacting and compressing the copper bar 532, and then pushes the copper bar 532 and the first insulating bush 540 to move towards the powered electrode 531 by overcoming the elastic force of the first powered spring 551, until the copper bar 532 contacts and compresses the powered electrode 531, and then the copper bar 532 continues to move towards the powered electrode 531, so as to push the powered electrode 531 to slide away from the copper bar by overcoming the elastic force of the second powered spring 552. This design is intended to ensure the stable contact conduction of the copper bar 532 and the power receiving electrode 531 by pressing the second power receiving spring 552 to increase the pressing force thereof, while the copper bar is kept pressed against the charging electrode 640 by the elastic force of the first power receiving spring. In addition, the first power receiving spring and the second power receiving spring can also play a role in damping, and damage caused by direct collision between the copper rod and the charging electrode and between the copper rod and the power receiving electrode is avoided.

3. And supplying power to the charging electrode, so that the current is led out from the charging cable to charge the equipment to be charged.

4. And after charging is finished, driving each device to reset.

Referring to fig. 1 to 5, the dust-proof assembly includes a dust-proof mounting base 130, the dust-proof mounting base 130 is hinged to one end of a connecting rod 320, the other end of the connecting rod 320 is hinged to a dust-proof cover 150, and the number of the connecting rod 320 is four, thereby forming a parallel four-bar mechanism.

At least one connecting rod 320 and the dustproof shaft 310 can be assembled in a circumferential rotating mode, the dustproof shaft 310 and one end of the dustproof cylinder shaft 211 can be assembled in a circumferential rotating mode, the other end of the dustproof cylinder shaft 211 is installed in the dustproof cylinder 210, the dustproof cylinder 210 is hinged to the cylinder base 140, and the cylinder base 140 is installed on the base 110.

Referring to fig. 4, when not in use, the lifting cylinder 220 drives the lifting cylinder shaft 221 to retract, so as to drive the positive pressure shell 160 to move to the minimum distance from the base; the dust cylinder 210 drives the dust cylinder shaft 211 to extend, so that the four connecting rods 320 are driven to drive the dust cap 150 to move towards the upper part of the positive pressure shell 160 until the dust cap 150 covers the upper part of the positive pressure shell 160 and the power receiving end 500. This can reduce effectively the probability that debris such as dust, water get into on the receiving end 500 to realize preventing dust, avoid influencing the normal use of receiving end 500.

In this embodiment, the positive pressure housing 160 is detected to move down to the right position by using a numerical control or a detection method of air pressure supplied by the lifting cylinder, and then the dust cap 150 is moved to shield the power receiving end 500. Once there is a foreign object between the positive pressure housing 160 and the base 110, the positive pressure housing 160 cannot move to the base, and at this time, if the dust-proof cylinder 210 is activated, the dust-proof cover 150 may collide with the positive pressure housing 160 or the positive pressure hatch 170, which may damage the equipment. The invention is mainly used in special inflammable and explosive environments, and obviously has higher cost if an external switch and a sensor are adopted to detect whether the positive pressure shell 160 is moved down, because the external switch and the sensor are also subjected to explosion-proof design, and the problems can be caused once the external switch and the sensor are out of order. In contrast, the present embodiment also designs a linkage valve, which is connected in series to the pipeline for supplying air to the dustproof cylinder 210; when in use, the linkage valve can be opened only after the positive pressure shell 160 moves to the base in place, thereby avoiding the problems.

Referring to fig. 18 to 19, the linkage valve includes a valve housing 710, a hollow valve cavity 711 is formed inside the valve housing 710, and a communication groove 712 is formed on the inner wall of the valve cavity 711; the valve cavity 711 is provided with a sealing sleeve 714 and a valve seat 713 at two ends of the communicating groove 712, the part of the valve cavity 711 between the sealing sleeve 714 and the valve seat 713 is sealed and slidably assembled with the valve core 430, the end surface of the valve core 430 is tightly pressed and sealed with the sealing gasket 420, and the sealing gasket 420 is arranged on the valve seat 713.

The valve cavity 711 is positioned at one end of the valve seat 713, communicated with the inlet end pipe 341 and positioned at the communicating groove 712, communicated with the outlet end pipe 342, and the communicating groove 712 is used for communicating the valve cavity 711 on two sides of the valve core 430; the valve core 430 is assembled with one end of the valve rod 350, the other end of the valve rod 350 is sleeved with the first spring 721 and then penetrates out of the sealing shaft sleeve 714, and the valve rod 350 is assembled with the sealing shaft sleeve 714 in a sealing and axially sliding mode. The first spring 721 applies an elastic force to the spool to push the valve seat 713, so that the spool maintains a press-seal with the packing in the initial state.

A valve rod groove 351 is formed in one end, penetrating out of the sealing shaft sleeve 714, of the valve rod 350, a valve rod groove inclined plane 352 is formed in the valve rod groove 351, and the part, provided with the valve rod groove 351, of the valve rod 350 is installed in the linkage shell 730; a linkage sliding groove 731 is further arranged in the linkage shell 730, the linkage sliding groove 731 is clamped with a wedge-shaped block 740 and can be assembled in a sliding mode, a wedge-shaped block end face 742 and a wedge-shaped block inclined face 741 are arranged on the wedge-shaped block 740, one end of the wedge-shaped block 740 is installed in the valve rod groove 351, and the wedge-shaped block inclined face 741 and the valve rod groove inclined face 352 are attached and can be assembled in a sliding mode.

The wedge block 740 is assembled with one end of the linkage rod 360, the other end of the linkage rod 360 penetrates through the linkage shell 730 and then is assembled with the linkage push plate 361, a second spring 722 is sleeved on a part of the linkage rod 360, which is located between the linkage shell 730 and the linkage push plate 361, and the second spring 722 is used for applying an elastic force far away from the linkage shell 730 to the linkage push plate 361, so that the end surface 742 of the wedge block is located at the position far away from the valve rod 350 in an initial state.

A locking mounting groove 732 is further formed in the linkage housing 730, the locking mounting groove 732 is communicated with the linkage sliding groove 731, an upper locking seat 760 is mounted in the locking mounting groove 732, a locking sliding groove 761 is formed in the locking seat 760, the locking sliding groove 761 is engaged with an upper locking block 750 and is slidably assembled, an upper locking wheel 751 is circumferentially rotatably mounted on the upper locking block 750, and the upper locking wheel 751 can tightly press and roll against the outer wall of the wedge block 740; the upper lock block 750 is assembled with one end of the lock rod 370, and the other end of the lock rod 370 penetrates out of the upper lock base 760 after being sleeved with a third spring 723; the third spring 723 is used to apply an elastic force to the upper block 750 to push the wedge block 740, and the upper seat 760 is axially slidably assembled with the lock lever 370.

In an initial state, because the outer wall of the wedge-shaped block 740 is tightly pressed against the upper locking wheel 751, the wedge-shaped block 740 can move downwards; during the downward movement and resetting of the positive pressure housing 160, the positive pressure housing 160 first presses down the linkage push block 761, so as to drive the wedge block 740 to move downward against the elastic force of the second spring 722 until the positive pressure housing 160 moves downward to a position, at which time the wedge block end surface 742 of the wedge block 740 is not higher than the bottom end surface of the upper lock block 750, the upper lock block 750 moves upward toward the wedge block end surface 742 until the bottom end surface of the upper lock block 750 is located above the wedge block end surface 742, at which time the wedge block 740 cannot move upward in the reverse direction. In this process, the valve rod 350 is driven to move the valve element 430 toward the communication groove 712 until both end surfaces of the valve element are located inside the communication groove 712, and at this time, the inlet pipe 341 and the outlet pipe 341 are communicated, so that air can be supplied to the dustproof cylinder 210.

In this embodiment, valve casing 710, linkage shell 730 all install on the base, and linkage shell 730, wedge-shaped piece, linkage push pedal department structure can set up a plurality ofly, generally two, are located the different positions in the below of malleation casing 160 respectively, need just can open the case through two wedge-shaped pieces to this condition (for the base terminal surface) that can't solve malleation casing 160 excessive slope can not be solved.

Preferably, the locking lever 370 is further assembled with one end of a cable 810, the cable 810 is assembled with the outer wall of the positive pressure housing 160 after passing around a guide wheel 771, the guide wheel 771 is circumferentially rotatably installed on a guide wheel carrier 770, and the guide wheel carrier 770 is installed on the linkage shell 730. When the positive pressure housing 160 moves upwards, the cable 810 is gradually pulled, so that the upper lock block 750 is pulled to slide towards the upper lock sliding groove 761 until the upper lock sliding groove is reset, at the moment, the wedge-shaped block moves upwards under the action of the second spring to reset, and the valve core and the valve rod reset under the action of the first spring.

More preferably, the cable 810 is provided with a spring wire portion 811, and when the positive pressure housing 160 is in the charging state, the spring wire portion 811 is in a tightened state, and at this time, the cable 810 pulls the upper lock block 750 to return. When the positive pressure housing 160 moves downward, the spring wire 811 will contract first by its own elastic force, so as to prevent the cable 810 from interfering with other devices and winding, which affects normal use.

In this embodiment, when the dust cap 150 moves relative to the power receiving end 500, the positive pressure housing 160 is in a state closest to the base, and the valve element opens. And when one but malleation casing 160 was in charged state, in order to prevent that dustproof cylinder maloperation from causing the collision, cable 810 drove lock 750 and resets this moment for the gas circuit disconnection of dustproof cylinder 210 can.

Referring to fig. 20, the charging safety system of the present embodiment includes:

the charging end is arranged in the sealed positive pressure shell and at least comprises 5 charging electrodes, wherein the charging end at least comprises two charging electrodes of 42V, two charging electrodes of 12V and 1 grounding charging electrode; the two 42V charging electrodes are used for charging outwards, the 12V charging electrode is used for transmitting control current, and one end of the grounding charging electrode is grounded to prevent electric leakage;

the power receiving end is arranged in the sealed positive pressure shell and at least comprises 5 power receiving electrodes, wherein at least two power receiving electrodes of 42V, two power receiving electrodes of 12V and 1 grounding power receiving electrode are included; the two 42V power receiving electrodes are electrically connected with the two 42V charging electrodes respectively so as to output current to the charging equipment; the two 12V power receiving electrodes are respectively electrically connected with the two 12V charging electrodes to introduce control current into the power receiving ends so as to control corresponding equipment in the power receiving ends; the grounding power receiving electrode is electrically connected with the grounding charging electrode to realize grounding; the grounding power receiving electrode is also electrically connected with a grounding contact of the explosion-proof box body; therefore, the explosion-proof box body can be grounded through the grounding receiving electrode and the grounding charging electrode;

the charger is installed in the explosion-proof control box and is used for converting commercial power into 42V direct current so as to charge subsequently; the positive and negative output ends of the charger are respectively and directly or indirectly electrically connected with the two 42V charging electrodes; the two 42V charging electrodes guide electricity to the two 42V receiving electrodes, thereby charging the outside.

The power receiving relay is arranged in the explosion-proof box body, and two movable contacts of the power receiving relay are respectively and electrically connected with one ends of two 42V power receiving electrodes, and a static contact of the power receiving relay is respectively and electrically connected with charging contacts of two charging cables; the coil power connection end (control end) of the power receiving relay is electrically connected with two 12V power receiving electrodes respectively;

the direct current power supply is used for converting commercial power into 12V direct current, and the positive and negative output ends of the direct current power supply are respectively and directly or indirectly electrically connected with the two 12V charging electrodes;

after the receiving end and the charging end are pressed, the electrode of the charging end and the electrode of the receiving end are in one-to-one correspondence and are in compression electric connection, at the moment, the direct current is input into the receiving relay by the direct current power supply, so that the receiving relay is closed, and the 42V direct current is transmitted to a charging contact after the receiving relay is closed, so that the charging is carried out outwards; in the process, the grounding power receiving electrode and the grounding charging electrode are electrically connected, so that the explosion-proof box body is grounded.

The interior of the positive pressure shell is sealed and filled with non-combustible gas, and is respectively communicated with an air inlet of an explosion-proof flow sensor and an air inlet of a pressure sensor (air pressure sensor), and an air outlet of the explosion-proof flow sensor is communicated with an exhaust joint of the positive pressure shell, so that the flow of the positive pressure shell exhausting outwards is detected in real time; the pressure sensor is used for detecting air pressure in the positive pressure shell. When the exhaust flow detected by the explosion-proof flow sensor and the positive pressure detected by the pressure sensor meet the preset requirements (reach a preset threshold), a positive pressure timing and positive pressure process is started, and the positive pressure process is to use air or other non-combustible gases to replace dangerous gases in the positive pressure shell, so that the inside of the positive pressure shell is a safe area. As once explosion or spark occurs in the positive pressure shell, the gas can be expanded, and at the moment, the data detected by the explosion-proof flow sensor and the pressure sensor can be increased, which means that dangerous gas exists in the positive pressure shell. And the safety in the positive pressure shell can be greatly improved by timely discharging the dangerous gas, and the dangerous gas is prevented from directly exploding in the positive pressure shell.

In this embodiment, the flameproof box body, the flameproof control box and the positive pressure shell all adopt an explosion-proof design, and are preferably in a positive pressure sealing state.

Preferably, the system further comprises a main control board, wherein the main control board comprises an interface board, a controller and a network module, and the interface board is provided with RJ45 interfaces, 10 IO interfaces and two 485 interfaces; the signal ends of each interface on the interface board are respectively connected to different signal ends of a controller, and the controller is used for receiving, transmitting and analyzing a control instruction, and performing parameter operation and program operation; the network module is connected with the RJ45 interface in a communication mode, and the RJ45 interface is networked with an external device through a network cable, so that the controller is networked with the external device.

Preferably, two alternating current access ends of the charger are respectively connected with a zero line and a live line of an alternating current power grid, two direct current output ends (positive and negative electrodes) of the charger are respectively and electrically connected with two movable contacts of the power receiving relay, and two static contacts of the power receiving relay are respectively and electrically connected with two 42V charging electrodes on a charging end; the control end of the power receiving relay is electrically connected with the IO1 interface of the main control panel, so that the on-off of the power receiving relay can be controlled through the main control panel, namely the on-off of current of a 42V charging electrode from the charger is controlled;

preferably, two alternating current access ends of the direct current power supply are respectively and electrically connected with a zero line and a live line of a commercial power, two direct current output ends (positive and negative electrodes) of the direct current power supply are respectively and electrically connected with two movable contacts of the access enabling relay, and two static contacts of the access enabling relay are respectively and electrically connected with two 12V charging electrodes on a charging end; the control end of the access enabling relay is electrically connected with the IO2 interface of the main control board, so that the main control board can control the on-off of the access enabling relay, namely whether power is supplied to the two 12V charging electrodes or not; two direct current connection outlet ends of the direct current power supply are also electrically connected with two electric connection ends of the main control board respectively so as to supply power to the main control board;

preferably, the explosion-proof box also comprises a grounding relay arranged in the explosion-proof box body, wherein a movable contact of the grounding relay is electrically connected with a grounding receiving electrode, a static contact of the grounding relay is electrically connected with a grounding wire, and the grounding wire is grounded; the control end (control coil connecting end) of the grounding relay is electrically connected with the two 12V power receiving electrodes respectively.

Preferably, the signal of the explosion-proof proximity sensor is connected to an IO10 interface of the main control board, so that the controller can acquire the signal of the explosion-proof proximity sensor, and a basis is provided for subsequently judging whether the charging end and the receiving end are compressed for conduction.

Preferably, 4 explosion-proof travel switches installed in the positive pressure shell are in communication connection with IO3, IO4, IO5 and IO6 of the main control board respectively, so that the controller can acquire signals of the 4 explosion-proof travel switches to judge whether the movement of the positive pressure shell 160 to the positive pressure hatch cover is in place.

Preferably, it has an ann's solenoid valve to establish ties respectively on the gas supply gas circuit of aerifing the gas circuit, lift cylinder, the gas supply gas circuit of jacking cylinder, this ann's solenoid valve is used for controlling the break-make that corresponds the gas circuit to whether realize controlling aerify the gas circuit and supply gas, whether to lift cylinder gas supply, whether to jacking cylinder gas supply.

The pressure sensor and the circuit of each intrinsic safety electromagnetic valve connected with the main control board are respectively connected with a safety grid in series, and the safety grids are used for limiting voltage and current on the corresponding circuits, so that the corresponding equipment is prevented from being burnt out due to overlarge voltage and current. The safety barrier is arranged in the explosion-proof control box.

The operation process of the charging safety system of the embodiment is as follows:

s1, when charging is needed, a main control board obtains a charging instruction through networking equipment or other signal input modes, and the main control board controls an intrinsic safety electromagnetic valve connected in series on an inflation gas path to be opened so as to inflate the positive pressure shell and discharge dangerous gas in the positive pressure shell;

s2, the main control board controls an intrinsic safety electromagnetic valve connected in series on a gas supply path of the lifting cylinder to be opened so as to supply gas to the lifting cylinder, the lifting cylinder carries the positive pressure shell to move upwards until the four explosion-proof travel switches are triggered, and then the intrinsic safety electromagnetic valve connected in series on the gas supply path of the lifting cylinder is disconnected;

s3, starting the explosion-proof proximity sensor, opening an intrinsic safety electromagnetic valve connected in series with an air supply path of the jacking cylinder, supplying air to the jacking cylinder, driving the charging end to move to the power receiving end by the jacking cylinder until the distance between the explosion-proof proximity sensor and the induction block reaches a preset threshold value, and judging that the charging end and the power receiving end are compressed and conducted at the moment;

s4, the main control board controls the passage enabling relay to be closed, so that the direct-current power supply is communicated with the two 12V charging electrodes; the 12V current is directly connected into the power receiving relay and the grounding relay, so that the power receiving relay and the grounding relay are closed, the charging electrode is electrically connected with the charging contact, and the explosion-proof box body is grounded;

s5, the main control board controls the charging relay to be closed, so that 42V direct current output by the charger is introduced to a charging junction to be charged;

s6, in the whole charging process, the explosion-proof flow sensor and the pressure sensor detect the airflow flow discharged by the positive pressure shell and the air pressure in the positive pressure shell in real time or periodically, and once the airflow flow and the air pressure in the positive pressure shell reach a preset threshold value, the air quantity supplied to the positive pressure shell is increased to discharge dangerous gas in the positive pressure shell, so that explosion is prevented;

and S7, after charging is completed, the main control board sequentially controls the charging relay, the access enabling relay, the jacking cylinder, the lifting cylinder and the intrinsic safety electromagnetic valve connected in series on the gas charging path to reset.

Referring to fig. 21-30, in the actual use process, mainly the outside air is drawn into the positive pressure chamber 161 to replace the dangerous gas in the positive pressure chamber, obviously, impurities exist in the air, once the impurities are adsorbed on the end face of the copper bar 532, poor contact is caused, electric sparks are caused, and certain safety hazards exist. In the present embodiment, the charging terminal is designed to be movable, and the impurities adsorbed on the end surface of the charging electrode 640 will be blown away along with the movement of the charging terminal 600 and the flow of the air flow in the positive pressure chamber. The copper bar 532 is positioned at the top of the positive pressure cavity 161 and is fixed, so that once impurities are adsorbed, the copper bar is difficult to fall off by itself, and therefore, the dust prevention protection of the power receiving end is necessary, the dust prevention plate mechanism is designed on the basis of the concept, the dust prevention plate mechanism comprises a wheel carrier 660 arranged on the charging shell 610, a sliding rail shell 920 arranged on the inner side of the positive pressure cabin cover 170 and a dust prevention plate 930 used for shielding the end part of the power receiving end 500, and the wheel carrier 660 is circumferentially and rotatably provided with a roller 661; the slide rail shell 920 is respectively provided with a guide rail bar part 921, a slide rail hole 922 and a guide rail bar stop plate 923, the slide rail hole 922 is sleeved outside one end of the explosion-proof shell cover 590 positioned in the positive pressure cavity 161, and the guide rail bar stop plate 923 is installed on the guide rail bar part 921; the two dust-proof boards 930 are provided with the two road wheels 931 which are respectively arranged on the two dust-proof boards 930 in a circumferential rotation manner, the bottom of each road wheel 931 is pressed on the top surface of the corresponding guide rail strip portion 921, and the road wheels 931 and the dust-proof boards 930 are respectively attached to the two end surfaces of the corresponding guide rail strip portion 921, so that the guide rail strip portions 921 provide guidance for the movement of the dust-proof boards 930, and the road wheels 931 are used for reducing the friction between the dust-proof boards 930 and the guide rail strip portions 921.

The guide rail bar stopper 923 is installed at one end of the two dust plates 930 adjacent to each other, thereby limiting the minimum interval between the two dust plates 930. The dust-proof plate 930 is further provided with a stop strip 932, and the stop strips 932 of the two dust-proof plates 930 are mutually compressed in the initial state, so that the two dust-proof plates 930 shield the end of the power receiving end 500 to prevent dust.

The dustproof plate 930 is further provided with a wedge block 940, the wedge block 940 is provided with an opening inclined surface 941, and the opening inclined surface 941 is arranged in a manner that one end close to the stop strip 932 is inclined downwards to one end far away from the stop strip 932; the opening ramp 941 faces the roller 661, and the roller 661 can be pressed against the opening ramp 941.

The dust-proof plate 930 is further provided with a pulling plate 950, and the pulling plate 950 is provided with a pulling hook 951; two pulling hooks 951 corresponding to the two dust-proof plates 930 are connected by a tension spring (not shown), and specifically, two ends of the tension spring are respectively assembled with the two pulling hooks 951, so that the two dust-proof plates 930 are applied with an elastic force of approaching and compressing each other by the tension spring. During the use, the end 600 that charges moves to the end 500 that receives electricity, gyro wheel 661 at first compresses tightly with opening inclined plane 941 on two wedge-shaped pieces 940, then along with the ascending branch of end 600 that charges, gyro wheel 661 applys the thrust of keeping away from each other to two wedge-shaped pieces 940 for gyro wheel 661 promotes two dust shields 930 and overcomes the elasticity of extension spring and keeps away from each other and move, it is electrically conductive to compress tightly with the end that receives electricity to charge to serve to move up, the outer wall of gyro wheel 661 or the outer wall of wheel carrier 660 compresses tightly with the lateral wall of stopping strip 932 this moment, thereby can realize the location, the lock position to dust shield 930 through gyro wheel 661 or wheel carrier 660. After the completion of charging, the end that charges moves down, and the gyro wheel moves down, and gyro wheel 661 moves down gradually along the lateral wall of the strip 932 that ends and compresses tightly with opening inclined plane 941, then along with the moving down of gyro wheel 661, opens the one end that inclined plane 941 kept away from dust guard 930 and compresses tightly with gyro wheel 661 gradually to can reduce the speed that two dust guards 930 are close to each other, avoid two to end strip 932 and take place great striking. And the two dust-proof plates 930 are gradually moved closer to each other by the elastic force of the tension spring until being reset, so that the dust-proof plates 930 are restored to shield the end of the power receiving end. Of course, the tension spring of the present embodiment may be replaced by an elastic rope, and theoretically, only the two dust-proof plates 930 can store the elastic force when being away from each other, and then the elastic force for resetting the two dust-proof plates 930 can be provided.

Preferably, the stop bars 932 are made of a soft elastic material, so that the two stop bars 932 can buffer each other when impacting each other, and the sealing performance can be increased when the two stop bars 932 are compressed.

Preferably, referring to fig. 30, since the speed of the cylinder is faster in the process of driving the cylinder shaft to extend and retract, and it is difficult to control the positioning between two displacement points of the cylinder shaft, once the speed is faster in the process of driving the jacking cylinder shaft 231 to extend and retract by the jacking cylinder 230, the two dust-proof plates 930 are rapidly close to each other under the pulling of the tension spring, so that the two stop bars 932 are easily bumped, which obviously affects the life of the stop bars 932, and even causes the deformation of the dust-proof plates 930, and meanwhile, the abnormal sound in the positive pressure cavity 161 affects the user experience and the timely judgment of the fault. In this embodiment, a through stop strip through groove 9321 is formed in one of the stop strips 932, a buffer buckle 910 is formed in the other stop strip 932, a buffer end 911 is formed on the buffer buckle 910, and a buffer inclined surface 912 and a lock arc surface 913 are respectively formed on the buffer end 911; a spring piece 960 is further installed on one end, far away from the bumper 910, of the dust guard 930 provided with the stop strip through groove 9321 and corresponding to the stop strip through groove 9321, one end of the spring piece 960 is installed on the corresponding dust guard 930, the other end is an open end, and a cushion pad 961 is installed on the spring piece 960; the bumper pad 961 is made of soft elastic material, such as rubber, silica gel, etc.

The bumper 910 penetrates through the stop bar through slot 9321 and then presses against the bumper pad 961, so that the spring leaf 960 is driven to deform until the buffer end 911 penetrates through the stop bar through slot 9321 and the locking arc surface 913 and the stop bar 932 are pressed against the outer wall of the stop bar through slot 9321. The cushion button 910 also has elasticity.

When the anti-dust cover is used, the buffer end 911 can be pulled into the through groove 9321 of the stop strip by only obtaining a certain thrust between the two anti-dust plates 930, so that the two anti-dust plates 930 are driven to be away from each other to open the end part of the power receiving end. The design is mainly to increase the stability degree when assembling between the two stop strips 932, thereby increasing the dustproof performance of the power receiving end. Since even if a tension force pressing the two dust-proof plates 930 against each other is applied by the tension spring, there may be a gap in the middle portion of the stopper 932, thereby reducing the dust-proof effect. Set up the buffering and detain 910 and end a logical groove 9321, and utilize and can effectively guarantee the degree of compressing tightly between two end a 932 after buffering end 911 and the taut mode of dust guard 930 to increase dustproof performance. When two dust guard 930 are mutually and rapidly close to and move, the buffer buckle 910 can pass through the through groove 9321 of the stop strip and then contact with the buffer pad 961, so that most of impact force can be buffered by elastic deformation of the spring piece 960, and stronger collision impact between the two stop strips 932 can be greatly reduced, meanwhile, the buffer end 911 and the dust guard 930 are tensioned to prevent the two stop strips 932 from being mutually far away from and rebounding after being collided, and repeated impact is caused for many times, when the buffer end 911 enters the through groove 9321 of the stop strip, the buffer inclined plane 912 can extrude with the through groove 9321 of the stop strip to enable the buffer buckle 910 to be elastically deformed so that the buffer end 911 enters the through groove 9321 of the stop strip, and when the buffer end 911 penetrates out of the through groove 9321 of the stop strip, the buffer buckle 910 resets through self elasticity, so that the lock arc surface 913 is tightly clamped with the stop strip 932 at which the through groove 9321 of the stop strip, and repeated impact after rebounding impact caused by collision can be directly avoided.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.

Claims

1. A positive-pressure wired charging cabin is characterized by comprising a positive-pressure shell, wherein a hollow positive-pressure cavity is formed in the positive-pressure shell, one end of the positive-pressure cavity is opened, the opening end of the positive-pressure cavity is sealed through a positive-pressure cabin cover, and the positive-pressure cabin cover is assembled with the positive-pressure shell in a sealing mode; a charging end is arranged in the positive pressure cavity, a power receiving end is arranged on the positive pressure cabin cover, and the charging end and the power receiving end are compressed to conduct electricity and then can be charged outwards through the power receiving end;

the charging end comprises a charging shell, a hollow charging cavity is arranged in the charging shell, an insulating panel is arranged on the charging shell and seals the opening end of the charging cavity, a charging electrode and an explosion-proof proximity sensor are respectively arranged on the insulating panel, and the charging electrode is electrically connected with a cable; explosion-proof proximity sensor and the cooperation of installing the response piece on receiving the electricity to detect explosion-proof proximity sensor and the distance of response piece, whether compress tightly electrically conductive foundation as charge end, receiving the electricity end.

2. The positive-pressure wired charging cabin according to claim 1, wherein a charging connecting seat is mounted on the charging shell, the charging connecting seat is assembled with one end of a jacking cylinder shaft, the other end of the jacking cylinder shaft penetrates out of the positive-pressure shell and then is installed in a jacking cylinder, and the jacking cylinder is mounted on the positive-pressure shell; the jacking cylinder shaft and the positive pressure shell are sealed and can be assembled in an axial sliding mode.

3. The positive-pressure wired charging cabin according to claim 1 or 2, wherein a guiding and limiting bush is further mounted on the outer wall of the charging shell, the guiding and limiting bush is axially slidably sleeved on a guiding shaft, one end of the guiding shaft is mounted in a guiding shaft seat and is fixedly assembled with the guiding shaft seat, and the guiding shaft seat is mounted in the positive-pressure shell.

4. The wired positive-pressure charging cabin of claim 1, further comprising a base, a mounting frame, a positive-pressure shell, and a lifting cylinder, wherein the mounting frame is mounted on the base, a housing of the lifting cylinder is mounted on the mounting frame, and a lifting cylinder shaft of the lifting cylinder is assembled with the positive-pressure shell.

5. The wired positive-pressure charging cabin according to claim 1, wherein a switch frame is further installed in the positive-pressure cavity, an explosion-proof travel switch is installed on the switch frame, a triggering end of the explosion-proof travel switch is opposite to the positive-pressure cabin cover, and the explosion-proof travel switch can be triggered after the positive-pressure shell moves to the right position of the positive-pressure cabin cover.

6. The wired positive-pressure charging cabin according to claim 1, wherein the positive-pressure casing is further provided with an exhaust joint, an air inlet joint, a pressure relief joint and a sensor pipe joint, the exhaust joint and the pressure relief joint are provided with an exhaust valve and a pressure relief valve respectively, the exhaust valve is used for exhausting air in the positive-pressure cavity, and the pressure relief valve is automatically opened to relieve pressure when the air pressure in the positive-pressure cavity is too high; the air inlet joint is communicated with the air inlet pipe, so that air is supplied to the positive pressure cavity through the air inlet pipe; the sensor pipe joint is communicated with one end of the sensor pipe, and the other end of the sensor pipe is communicated with an air inlet interface of the pressure sensor.

7. The positive-voltage wired charging cabin according to claim 1, wherein the power receiving end comprises a power receiving shell, a power receiving component and an explosion-proof shell cover, a hollow power receiving cavity is formed inside the power receiving shell, one end of the power receiving cavity, which faces the charging end, is open, and the open end is closed by the explosion-proof shell cover, the power receiving component and a spring baffle are installed in the power receiving cavity, and the spring baffle is installed on the explosion-proof shell cover;

the power receiving assembly comprises a power receiving electrode, a copper rod, a first insulating bush and a second insulating bush, wherein the first insulating bush and the second insulating bush are made of insulating materials; the first insulating bush is sleeved outside the copper rod, and two ends of the copper rod respectively penetrate through two ends of the first insulating bush; the first insulating bush is sleeved with a metal bush, the metal bush is mounted on the power receiving shell, and the first insulating bush and the metal bush are assembled in a sealing mode and can slide axially; the second insulating bush is arranged on the spring baffle plate, the second insulating bush is sleeved outside the power receiving electrode and can be assembled with the power receiving electrode in an axial sliding mode, and two ends of the power receiving electrode penetrate out of the second insulating bush respectively; in the initial state, the copper rod is not in contact with the power receiving electrode for conducting electricity; when the receiving end and the charging end are pressed tightly for conducting, two ends of the copper bar are respectively pressed tightly with the charging electrode and the receiving electrode for conducting.

8. The positive-pressure wired charging compartment of claim 7, wherein the first insulating bushing has a first bushing raised ring disposed thereon, the first bushing raised ring being unable to pass through the metal bushing;

one end, far away from the copper bar, of the second insulating bushing penetrates through the spring baffle plate and then is assembled with a bushing nut, and the bushing nut cannot penetrate through the spring baffle plate, so that the maximum displacement point of the second insulating bushing moving towards the copper bar is limited;

install first power receiving spring between spring baffle and the first bush bulge loop, first power receiving spring is used for applying the elasticity that promotes to the end that charges to first insulation bush.

9. The positive-pressure wired charging cabin according to claim 1, further comprising a dust-proof assembly, wherein the dust-proof assembly comprises a dust-proof mounting seat, the dust-proof mounting seat is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a dust-proof cover, and at least two connecting rods are provided; the dust cover can be shielded outside the power receiving end;

10. The positive-pressure wired charging cabin according to claim 9, further comprising a linkage valve, wherein the linkage valve is connected in series with the air passage of the dustproof cylinder; the linkage valve comprises a valve shell, a hollow valve cavity is arranged in the valve shell, and a communicating groove is formed in the inner wall of the valve cavity; the valve cavity is provided with a sealing shaft sleeve and a valve seat at two ends of the communicating groove respectively, the part of the valve cavity between the sealing shaft sleeve and the valve seat is sealed with the valve core and can be assembled in a sliding way, the end surface of the valve core is tightly pressed and sealed with a sealing gasket, and the sealing gasket is arranged on the valve seat;

a valve rod groove is formed in one end, penetrating out of the sealing shaft sleeve, of the valve rod, a valve rod groove inclined plane is arranged on the valve rod groove, and the part, provided with the valve rod groove, of the valve rod is installed in the linkage shell;

the valve rod connecting device is characterized in that a linkage sliding groove is further formed in the linkage shell, the linkage sliding groove is clamped with a wedge-shaped block and can be assembled in a sliding mode, the wedge-shaped block is provided with a wedge-shaped block end face and a wedge-shaped block inclined face, one end of the wedge-shaped block is arranged in a valve rod groove, and the wedge-shaped block inclined face and the valve rod groove inclined face are attached and can be assembled in a sliding mode;