CN111137158A

CN111137158A - Urban traffic charging device with good safety performance

Info

Publication number: CN111137158A
Application number: CN202010093221.3A
Authority: CN
Inventors: 樊晓虹; 何国锋; 陈少峰; 樊斌; 李佳佳; 牛姿懿; 牛帅臣; 弓少康; 牛叶克; 董金康
Original assignee: Henan University of Urban Construction
Current assignee: Henan University of Urban Construction
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-05-12

Abstract

The invention discloses an urban traffic charging device with good safety performance, which comprises a protective shell, wherein two symmetrically-arranged electric cylinders are fixedly arranged at the positions, close to the upper end, of the front surface and the rear surface of the protective shell, a push-pull rod is fixedly arranged on a piston rod of each electric cylinder, a connecting block is fixedly arranged at one end, far away from the electric cylinders, of each push-pull rod, and a lifting mechanism is fixedly arranged on the inner wall of the protective shell; the lifting mechanism comprises a supporting frame, and a first fixing plate is fixedly mounted at a position, close to one side, of the front surface of the supporting frame. According to the invention, the charging main body in the charging device can be protected by the arranged protective shell, the charging main body is prevented from being damaged by the protective shell, the upper end of the protective shell can be opened and closed by the arranged electric cylinder matched with the shielding device for use, the charging main body is convenient to send out, a certain protection effect is achieved, and the charging main body can be lifted by the arranged lifting mechanism.

Description

Urban traffic charging device with good safety performance

Technical Field

The invention relates to the technical field of charging devices, in particular to an urban traffic charging device with good safety performance.

Background

The charging pile has the function similar to an oiling machine in a gas station, can be fixed on the ground or on the wall, is installed in public buildings (public buildings, markets, public parking lots and the like) and residential district parking lots or charging stations, and can charge various types of electric vehicles according to different voltage grades. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile. The charging pile generally provides two charging modes of conventional charging and quick charging, people can use a specific charging card to swipe the card on a human-computer interaction operation interface provided by the charging pile for use, and perform operations such as corresponding charging mode, charging time, cost data printing and the like, and a display screen of the charging pile can display data such as charging amount, cost, charging time and the like; but present fill electric pile all is direct to expose outside, can damage after using for a long time, and the outside does not have the thing of protection, and direct use fills electric pile body installation, easy damage.

Patent document (CN205326824U) discloses an automobile charging pile, which is characterized by comprising: the device comprises a pile body, a base, a telescopic charging gun, an operation screen, a display screen, a controller and a magnetic card induction area; the controller is arranged in the pile body and is in signal connection with the telescopic charging gun, the operation screen, the display screen and the magnetic card induction area; the telescopic charging gun is arranged on the side surface of the pile body; the operation screen, the display screen and the magnetic card induction area are arranged on the front surface of the pile body; the controller comprises a main control module, and a detection module, a payment module, a safety protection module, a positioning module, a calculation module and a charging module which are in signal connection with the main control module. The utility model discloses an useful part lies in: the utility model discloses an automobile charging pile, which has the advantages that the applicability of the charging pile is obviously improved through the design of a telescopic charging gun, and the working efficiency and the intelligent degree of the charging pile are improved through the design of each module in a controller; finally, the charging pile can accurately complete the charging work according to the requirements of customers only by simple operation; but this fill electric pile can't reach the effect of lift.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide the urban traffic charging device with good safety performance.

The purpose of the invention can be realized by the following technical scheme:

a city traffic charging device with good safety performance comprises a protective shell, wherein two symmetrically-arranged electric cylinders are fixedly arranged at positions, close to the upper end, of the front surface and the rear surface of the protective shell, a push-pull rod is fixedly arranged on a piston rod of each electric cylinder, a connecting block is fixedly arranged at one end, far away from the electric cylinders, of each push-pull rod, and a lifting mechanism is fixedly arranged on the inner wall of the protective shell;

the lifting mechanism comprises a supporting frame, a first fixing plate is fixedly mounted at a position, close to one side, of the front surface of the supporting frame, a speed reducer is fixedly mounted on the front surface of the first fixing plate, a driving motor is mounted at the lower end of the speed reducer in a transmission mode, first bearing seats are fixedly mounted at positions, close to the front end and the rear end, of the inner wall of one side of the supporting frame, a first connecting shaft is rotatably mounted between the two first bearing seats, and an output shaft of the speed reducer is fixedly mounted with one end of the first connecting shaft;

third bearing seats are fixedly arranged at the positions, aligned with the two first bearing seats, of the inner wall of the other side of the supporting frame, a third connecting shaft is rotatably arranged between the two third bearing seats, two third gears are fixedly arranged on the arc side surface of the third connecting shaft, fourth bearing seats are fixedly arranged at the positions, aligned with the two second bearing seats, of the inner wall of the other side of the supporting frame, a fourth connecting shaft is rotatably arranged between the two fourth bearing seats, and two fourth gears are fixedly arranged on the arc side surface of the fourth connecting shaft, and vertically aligned with the third gears;

the supporting frame is characterized in that a vertical plate is fixedly mounted on one side of the supporting frame, a second fixing plate is fixedly mounted on the surface of one side of the vertical plate, and one end, far away from the speed reducer, of the first connecting shaft penetrates through the second fixing plate.

Further, the method comprises the following steps: the upper end of the protective housing is an opening, the upper surface of the protective housing is slidably provided with two shielding covers, two sides of each shielding cover are fixedly installed with the push-pull rod through connecting blocks, sliding grooves are formed in the front edge and the rear edge of the upper surface of the protective housing, and limiting grooves are formed in the inner wall of each sliding groove.

Further, the method comprises the following steps: the equal fixed mounting of lower surface of two shelter from the lid has the slider that inserts in the spout, the circular arc side fixed mounting of slider has the stopper that inserts the spacing groove, the slider is the cross with the constitution shape of stopper.

Further, the method comprises the following steps: the arc side fixed mounting of first connecting axle has two first gears, the equal fixed mounting in below that braced frame's one side inner wall was located two first bearings respectively has the second bearing, rotates between two second bearings and installs the second connecting axle, the arc side fixed mounting of second connecting axle has two second gears that align with first gear respectively, all rotates between two first gears that align from top to bottom and the second gear and installs first chain, and fixed mounting has first mount pad between two first chains, braced frame is located one side inner wall fixed mounting between first bearing and the second bearing has first division board, the shape of first division board is the character cut in bas-relief.

Further, the method comprises the following steps: all rotate between two third gears that align from top to bottom and the fourth gear and install the second chain, fixed mounting has the second mount pad that aligns with first mount pad between two second chains, inner wall fixed mounting that braced frame is located between third bearing frame and the fourth bearing frame has the second division board, the shape of second division board is the character cut in bas-relief shape.

Further, the method comprises the following steps: the speed reducer runs through the circular arc side fixed mounting of second fixed plate and has drive gear, one side of second fixed plate is rotated and is installed the gear shaft, the circular arc side fixed mounting of gear shaft has the driven gear with drive gear meshing, the place ahead fixed mounting that the circular arc side of gear shaft is close to driven gear has the second pinion, the circular arc side fixed mounting of third connecting axle has the first pinion that locates the coplanar with the second pinion, through chain drive between first pinion and the second pinion.

Further, the method comprises the following steps: and a charging main body is fixedly installed between the second installation seat and the first installation seat.

Further, the method comprises the following steps: the use method of the urban traffic charging device with good safety performance comprises the following steps:

the method comprises the following steps: starting an electric cylinder on the protective shell, wherein the electric cylinder pushes a push-pull rod, two shielding covers are driven by a connecting block on the push-pull rod to respectively slide towards two sides, a sliding block on the shielding covers slides along a sliding groove in the sliding process, and a limiting block on the sliding block slides along a limiting groove;

step two: then starting a driving motor, the driving motor drives a speed reducer to operate, the speed reducer drives a first connecting shaft between first fixing plates to rotate, the rotating first connecting shaft drives a driving gear to rotate, the driving gear is meshed with a driven gear, the rotating driving gear drives the driven gear to rotate, so that a gear shaft rotates along with the driven gear, a second auxiliary gear is driven to rotate, the second auxiliary gear drives a first auxiliary gear through a chain, so as to drive a third connecting shaft between third bearing seats to rotate, a first gear on the rotating first connecting shaft drives a second gear on a second connecting shaft to rotate through the first chain, so that the first chain rotates, then a first mounting seat on the first chain is driven to move up and down, meanwhile, a third gear on the rotating third connecting shaft drives a fourth gear on a fourth connecting shaft to rotate along with the second chain, so as to enable the second chain to rotate, and then the second mounting seat on the second chain is driven to move up and down, and the second mounting seat and the charging main body on the fourth bearing seat are sent out.

The invention has the beneficial effects that:

1. the protection shell is arranged, the charging main body in the protection shell can be protected, the protection shell is used for installation, the charging main body is prevented from being damaged, the protection shell is used by matching with an electric cylinder, the upper end of the protection shell can be opened and closed, the charging main body is convenient to send out, the protection shell also has a certain protection effect, the electric cylinder on the protection shell is started, the electric cylinder pushes a push-pull rod, two shielding covers are driven by a connecting block on the push-pull rod to respectively slide towards two sides, in the sliding process, a sliding block on the shielding covers slides along a sliding groove, and a limiting block on the sliding block slides along a limiting groove;

2. through the arranged lifting mechanism, the charging main body can be lifted, the charging main body can be sent into the sending-out protective shell, the charging device can be prevented from being freely tampered by children while the use is convenient, the safety of the charging device is improved, the driving motor is started, the driving motor drives the speed reducer to operate, the speed reducer drives the first connecting shaft between the first fixing plates to rotate, the rotating first connecting shaft drives the driving gear to rotate, the driving gear is meshed with the driven gear, the rotating driving gear drives the driven gear to rotate, the gear shaft also rotates along with the driven gear, the second auxiliary gear drives the first auxiliary gear to rotate through the chain, so as to drive the third connecting shaft between the third bearing seats to rotate, the first gear on the rotating first connecting shaft drives the second gear on the second connecting shaft to rotate through the first chain, thereby make first chain rotate, drive the first mount pad on the first chain again and reciprocate, the third gear on the third connecting axle of pivoted drives fourth gear on the fourth connecting axle through the second chain and then rotates simultaneously to make the second chain rotate, drive the second mount pad on the second chain again and reciprocate, see off the main part that charges on second mount pad and the fourth bearing seat.

Drawings

The invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the charging device of the present invention;

FIG. 2 is a view of the shield cover of the present invention in cooperation with a protective housing;

FIG. 3 is a schematic view of the construction of the lifting mechanism of the present invention;

FIG. 4 is a schematic view of a side structure of the elevating mechanism of the present invention;

fig. 5 is a schematic structural view of the lifting mechanism and the charging body in cooperation with each other in the present invention.

In the figure: 1. a protective housing; 2. an electric cylinder; 3. a push-pull rod; 4. connecting blocks; 5. a shielding cover; 501. a chute; 502. a limiting groove; 503. a slider; 504. a limiting block; 6. a charging body; 7. a lifting mechanism; 701. a support frame; 702. a first fixing plate; 703. a speed reducer; 704. a drive motor; 705. a first bearing housing; 706. a first connecting shaft; 707. a first gear; 708. a vertical plate; 709. a second fixing plate; 7010. a second bearing housing; 7011. a second connecting shaft; 7012. a second gear; 7013. a first chain; 7014. a first mounting seat; 7015. a first partition plate; 7016. a third bearing seat; 7017. a third connecting shaft; 7018. a third gear; 7019. a first counter gear; 7020. a drive gear; 7021. a gear shaft; 7022. a driven gear; 7023. a second counter gear; 7024. a fourth bearing seat; 7025. a fourth connecting shaft; 7026. a fourth gear; 7027. a second chain; 7028. a second mounting seat; 7029. a second partition plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the urban traffic charging device with good safety performance comprises a protective casing 1, wherein two symmetrically-arranged electric cylinders 2 are fixedly mounted on the front surface and the rear surface of the protective casing 1, which are close to the upper end, a push-pull rod 3 is fixedly mounted on a piston rod of each electric cylinder 2, a connecting block 4 is fixedly mounted at one end of each push-pull rod 3, which is far away from each electric cylinder 2, and a lifting mechanism 7 is fixedly mounted on the inner wall of the protective casing 1;

the lifting mechanism 7 comprises a supporting frame 701, a first fixing plate 702 is fixedly installed at a position, close to one side, of the front surface of the supporting frame 701, a speed reducer 703 is fixedly installed on the front surface of the first fixing plate 702, a driving motor 704 is installed at the lower end of the speed reducer 703 in a transmission mode, first bearing seats 705 are fixedly installed at positions, close to the front end and the rear end, of the inner wall of one side of the supporting frame 701, a first connecting shaft 706 is rotatably installed between the two first bearing seats 705, and an output shaft of the speed reducer 703 is fixedly installed at one end of the first connecting shaft 706;

third bearing seats 7016 are fixedly installed at positions, aligned with the two first bearing seats 705, of the inner wall of the other side of the supporting frame 701, a third connecting shaft 7017 is rotatably installed between the two third bearing seats 7016, two third gears 7018 are fixedly installed on the arc-shaped side surface of the third connecting shaft 7017, fourth bearing seats 7024 are fixedly installed at positions, aligned with the two second bearing seats 7010, of the inner wall of the other side of the supporting frame 701, a fourth connecting shaft 7025 is rotatably installed between the two fourth bearing seats 7024, and two fourth gears 7026 vertically aligned with the third gears 7018 are fixedly installed on the arc-shaped side surface of the fourth connecting shaft 7025;

a vertical plate 708 is fixedly installed on one side of the supporting frame 701, a second fixing plate 709 is fixedly installed on the surface of one side of the vertical plate 708, and one end of the first connecting shaft 706, which is far away from the speed reducer 703, penetrates through the second fixing plate 709.

The upper end of the protective housing 1 is provided with an opening, two shielding covers 5 are slidably mounted on the upper surface of the protective housing 1, two sides of each shielding cover 5 are fixedly mounted with a push-pull rod 3 through connecting blocks 4, sliding grooves 501 are formed in the front edge and the rear edge of the upper surface of the protective housing 1, and a limiting groove 502 is formed in the inner wall of each sliding groove 501; the lower surfaces of the two shielding covers 5 are fixedly provided with sliding blocks 503 inserted into the sliding grooves 501, the arc side surfaces of the sliding blocks 503 are fixedly provided with limiting blocks 504 inserted into the limiting grooves 502, and the sliding blocks 503 and the limiting blocks 504 are in a cross shape;

two first gears 707 are fixedly mounted on the arc-shaped side surface of the first connecting shaft 706, two second bearing seats 7010 are fixedly mounted on the inner wall of one side of the supporting frame 701, which is respectively located below the two first bearing seats 705, a second connecting shaft 7011 is rotatably mounted between the two second bearing seats 7010, two second gears 7012 which are respectively aligned with the first gears 707 are fixedly mounted on the arc-shaped side surface of the second connecting shaft 7011, first chains 7013 are rotatably mounted between the two vertically aligned first gears 707 and the second gears 7012, a first mounting seat 7014 is fixedly mounted between the two first chains 7013, a first partition plate 7015 is fixedly mounted on the inner wall of one side of the supporting frame 701, which is located between the first bearing seats 705 and the second bearing seats 7010, and the first partition plate 7015 is concave; a second chain 7027 is rotatably mounted between the two vertically aligned third gears 7018 and the fourth gear 7026, a second mounting seat 7028 aligned with the first mounting seat 7014 is fixedly mounted between the two second chains 7027, a second partition plate 7029 is fixedly mounted on the inner wall of the supporting frame 701 between the third bearing seat 7016 and the fourth bearing seat 7024, and the second partition plate 7029 is concave; the speed reducer 703 is fixedly provided with a drive gear 7020 through the arc side of the second fixing plate 709, one side of the second fixing plate 709 is rotatably provided with a gear shaft 7021, the arc side of the gear shaft 7021 is fixedly provided with a driven gear 7022 meshed with the drive gear 7020, the arc side of the gear shaft 7021 is fixedly provided with a second auxiliary gear 7023 in front of the driven gear 7022, the arc side of the third connecting shaft 7017 is fixedly provided with a first auxiliary gear 7019 on the same plane as the second auxiliary gear 7023, and the first auxiliary gear 7019 is in chain transmission with the second auxiliary gear 7023; a charging main body 6 is fixedly installed between the second installation seat 7028 and the first installation seat 7014.

The use method of the urban traffic charging device with good safety performance comprises the following steps: starting the electric cylinder 2 on the protective housing 1, wherein the electric cylinder 2 pushes the push-pull rod 3, the two shielding covers 5 are driven by the connecting blocks 4 on the push-pull rod 3 to respectively slide towards two sides, in the sliding process, the sliding block 503 on the shielding covers 5 slides along the sliding groove 501, and the limiting block 504 on the sliding block 503 slides along the limiting groove 502; then the driving motor 704 is started, the driving motor 704 drives the speed reducer 703 to operate, the speed reducer 703 drives the first connecting shaft 706 between the first fixing plates 702 to rotate, the rotating first connecting shaft 706 drives the driving gear 7020 to rotate, because the driving gear 7020 is meshed with the driven gear 7022, the rotating driving gear 7020 drives the driven gear 7022 to rotate, so that the gear shaft 7021 also rotates along with the first connecting shaft, so that the second pinion 7023 is driven to rotate, the second pinion 7023 drives the first pinion 7019 through a chain, so as to drive the third connecting shaft 7017 between the third bearing blocks 7016 to rotate, the first gear 707 on the rotating first connecting shaft 706 drives the second gear 7012 on the second connecting shaft 7011 to rotate through the first chain 7013, so as to rotate the first chain 7013, then drive the first mounting seat 7014 on the first chain 7013 to move up and down, and at the same time, the third gear 7018 on the rotating third connecting shaft 7017 drives the fourth gear connecting shaft 7026 on the fourth connecting shaft 7025 to rotate along with the second chain 7027, thereby, the second chain 7027 is rotated to drive the second mounting seat 7028 on the second chain 7027 to move up and down, and the second mounting seat 7028 and the charging main body 6 on the fourth bearing block 7024 are sent out.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. The urban traffic charging device with good safety performance is characterized by comprising a protective shell (1), wherein two symmetrically-arranged electric cylinders (2) are fixedly arranged at positions, close to the upper end, of the front surface and the rear surface of the protective shell (1), a push-pull rod (3) is fixedly arranged on a piston rod of each electric cylinder (2), a connecting block (4) is fixedly arranged at one end, far away from the electric cylinders (2), of each push-pull rod (3), and a lifting mechanism (7) is fixedly arranged on the inner wall of the protective shell (1);

the lifting mechanism (7) comprises a supporting frame (701), a first fixing plate (702) is fixedly installed at a position, close to one side, of the front surface of the supporting frame (701), a speed reducer (703) is fixedly installed on the front surface of the first fixing plate (702), a driving motor (704) is installed at the lower end of the speed reducer (703) in a transmission mode, first bearing seats (705) are fixedly installed at positions, close to the front end and the rear end, of the inner wall of one side of the supporting frame (701), a first connecting shaft (706) is rotatably installed between the two first bearing seats (705), and an output shaft of the speed reducer (703) is fixedly installed with one end of the first connecting shaft (706);

third bearing seats (7016) are fixedly installed at positions, aligned with the two first bearing seats (705), of the inner wall of the other side of the supporting frame (701), a third connecting shaft (7017) is rotatably installed between the two third bearing seats (7016), two third gears (7018) are fixedly installed on the arc side face of the third connecting shaft (7017), fourth bearing seats (7024) are fixedly installed at positions, aligned with the two second bearing seats (7010) respectively, of the inner wall of the other side of the supporting frame (701), a fourth connecting shaft (7025) is rotatably installed between the two fourth bearing seats (7024), and two fourth gears (7026) are fixedly installed on the arc side face of the fourth connecting shaft (7025) and vertically aligned with the third gears (7018) respectively;

a vertical plate (708) is fixedly installed on one side of the supporting frame (701), a second fixing plate (709) is fixedly installed on the surface of one side of the vertical plate (708), and one end, far away from the speed reducer (703), of the first connecting shaft (706) penetrates through the second fixing plate (709).

2. The urban traffic charging device with the good safety performance according to claim 1, wherein the upper end of the protective housing (1) is provided with an opening, two shielding covers (5) are slidably mounted on the upper surface of the protective housing (1), two sides of each shielding cover (5) are fixedly mounted with a push-pull rod (3) through connecting blocks (4), sliding grooves (501) are formed in the front edge and the rear edge of the upper surface of the protective housing (1), and a limiting groove (502) is formed in the inner wall of each sliding groove (501).

3. The urban traffic charging device with good safety performance according to claim 2, wherein sliding blocks (503) inserted into sliding grooves (501) are fixedly mounted on the lower surfaces of the two shielding covers (5), limiting blocks (504) inserted into limiting grooves (502) are fixedly mounted on the arc side surfaces of the sliding blocks (503), and the sliding blocks (503) and the limiting blocks (504) are in a cross shape.

4. The urban traffic charging device with good safety performance according to claim 1, wherein two first gears (707) are fixedly mounted on the arc side surface of the first connecting shaft (706), two second bearing seats (7010) are fixedly mounted on the inner wall of one side of the supporting frame (701) respectively below the two first bearing seats (705), a second connecting shaft (7011) is rotatably mounted between the two second bearing seats (7010), two second gears (7012) respectively aligned with the first gears (707) are fixedly mounted on the arc side surface of the second connecting shaft (7011), first chains (7013) are rotatably mounted between the two first gears (707) aligned up and down and the second gear (7012), a first mounting seat (7014) is fixedly mounted between the two first chains (7013), and a first partition plate (7013) is fixedly mounted on the inner wall of one side of the supporting frame (701) between the first bearing seats (705) and the second bearing seats (7010) 7015) The first partition plate (7015) has a concave shape.

5. The urban traffic charging device with good safety performance according to claim 1, wherein second chains (7027) are rotatably mounted between two vertically aligned third gears (7018) and fourth gears (7026), a second mounting seat (7028) aligned with the first mounting seat (7014) is fixedly mounted between the two second chains (7027), a second separation plate (7029) is fixedly mounted on the inner wall of the supporting frame (701) between the third bearing seat (7016) and the fourth bearing seat (7024), and the second separation plate (7029) is concave.

6. The urban traffic charging device with the good safety performance as claimed in claim 1, wherein the speed reducer (703) penetrates through the arc side of the second fixing plate (709), the gear shaft (7020) is rotatably mounted on one side of the second fixing plate (709), the driven gear (7022) meshed with the drive gear (7020) is fixedly mounted on the arc side of the gear shaft (7021), the second auxiliary gear (7023) is fixedly mounted on the arc side of the gear shaft (7021) close to the front of the driven gear (7022), the first auxiliary gear (7019) located on the same plane as the second auxiliary gear (7023) is fixedly mounted on the arc side of the third connecting shaft (7017), and the first auxiliary gear (7019) and the second auxiliary gear (7023) are in chain transmission.

7. The urban traffic charging device with good safety performance according to claim 5, wherein a charging main body (6) is fixedly installed between the second installation seat (7028) and the first installation seat (7014).

8. The urban traffic charging device with good safety performance according to claim 1, wherein the using method of the urban traffic charging device with good safety performance comprises the following steps:

the method comprises the following steps: starting an electric cylinder (2) on a protective shell (1), wherein the electric cylinder (2) pushes a push-pull rod (3), two shielding covers (5) are driven to respectively slide towards two sides through a connecting block (4) on the push-pull rod (3), a sliding block (503) on the shielding covers (5) slides along a sliding groove (501) in the sliding process, and a limiting block (504) on the sliding block (503) slides along a limiting groove (502);

step two: then the driving motor (704) is started, the driving motor (704) drives the speed reducer (703) to operate, the speed reducer (703) drives the first connecting shaft (706) between the first fixing plates (702) to rotate, the rotating first connecting shaft (706) drives the driving gear (7020) to rotate, as the driving gear (7020) is meshed with the driven gear (7022), the rotating driving gear (7020) drives the driven gear (7022) to rotate, so that the gear shaft (7021) also rotates along with the gear shaft, the second auxiliary gear (7023) rotates, the second auxiliary gear (7023) drives the first auxiliary gear (7019) through a chain, so as to drive the third connecting shaft (7017) between the third bearing seats (7016) to rotate, the first gear (707) on the rotating first connecting shaft (706) drives the second gear (7012) on the second connecting shaft (7011) to rotate through the first chain (7013), so as to enable the first chain (7013) to rotate, then drive first mount pad (7014) on first chain (7013) and reciprocate, third gear (7018) on the third connecting axle (7017) that rotates simultaneously drives fourth gear (7026) on the fourth connecting axle (7025) and follows the rotation through second chain (7027), thus make second chain (7027) rotate, drive second mount pad (7028) on second chain (7027) and reciprocate, send out second mount pad (7028) and main part (6) of charging on the fourth bearing seat (7024).