CN111301195A

CN111301195A - Electric vehicle storage battery charging equipment

Info

Publication number: CN111301195A
Application number: CN202010232363.3A
Authority: CN
Inventors: 吕献爱
Original assignee: Xianju Xialang New Energy Technology Co ltd
Current assignee: ZHANG Chen
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2020-06-19
Anticipated expiration: 2040-03-28
Also published as: CN111301195B

Abstract

The invention relates to the field of storage batteries, in particular to electric vehicle storage battery charging equipment which comprises a machine body and a rotary cavity arranged in the machine body, wherein a gear cavity is arranged in the end wall of the left side of the rotary cavity, a first rotating shaft is rotatably arranged between the gear cavity and the rotary cavity, a first gear is fixedly arranged at the tail end of the first rotating shaft in the gear cavity, first chain wheels which are bilaterally symmetrical are fixedly arranged on the outer surface of the first rotating shaft in the rotary cavity, and second chain wheels which are rotatable are symmetrically arranged on the end walls of the left side and the right side of the rotary cavity. The loss of the battery is avoided, meanwhile, the occupied area of the equipment is small, the putting cost is low, the automation degree is high, the operation is convenient, and the device is worthy of popularization.

Description

Electric vehicle storage battery charging equipment

Technical Field

The invention relates to the field related to storage batteries, in particular to storage battery charging equipment for an electric vehicle.

Background

Along with the popularization of new forms of energy electric motor car, electric motor car quantity is very huge, nevertheless often can touch in the electric motor car use, the battery insufficient voltage can't in time charge and lead to unable continuation to use, lead to the battery to lose easily when traditional battery charging equipment uses, or can not in time charge to insufficient voltage battery, when leading to follow-up people to use, the phenomenon that the battery did not charge, current battery charging equipment area reaches moreover, put in with high costsly, consequently it improves above-mentioned problem to need to set up an electric motor car battery charging equipment.

Disclosure of Invention

The invention aims to provide a storage battery charging device for an electric vehicle, which can overcome the defects in the prior art, so that the practicability of the device is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a charging device for a storage battery of an electric vehicle, which comprises a vehicle body and a rotary cavity arranged in the vehicle body, wherein a gear cavity is arranged in the end wall at the left side of the rotary cavity, a first rotating shaft is rotatably arranged between the gear cavity and the rotary cavity, a first gear is fixedly arranged at the tail end of the first rotating shaft in the gear cavity, a first chain wheel which is bilaterally symmetrical is fixedly arranged on the outer surface of the first rotating shaft in the rotary cavity, rotatable second chain wheels are symmetrically arranged on the left and right end walls of the rotary cavity, the second chain wheels are in transmission fit connection with the first chain wheels through chains, a plurality of rotatable fixing frames are equidistantly arranged between the left chain wheel and the right chain wheel, a charging cavity with a downward opening is arranged in the bottom wall of each fixing frame, a swinging cavity with a rightward opening is arranged in the end wall at, a door opening and closing device for controlling the swing door to be opened and closed is arranged in the top wall of the charging cavity, a first sliding groove with opposite openings is arranged between the front end wall and the rear end wall of the charging cavity, a first sliding plate is slidably arranged in the first sliding groove, a first spring is arranged between the first sliding plate and the end wall of the first sliding groove, a battery is placed in the charging cavity, a charging electric shock is arranged at the top of the battery, a second sliding groove with a downward opening is arranged in the top wall of the charging cavity, a first rack matched with the charging electric shock is slidably arranged in the second sliding groove, a second spring is arranged between the first rack and the top wall of the second sliding groove, the first rack can charge the battery through the charging electric shock, and the adsorption force of an electromagnet electrically connected with the first rack is increased when the charging voltage of the battery is larger, the door opening and closing device is driven to accumulate energy, a recovery cavity with a right opening is communicated in the bottom wall of the rotary cavity, a second sliding plate is arranged in the recovery cavity in a vertically sliding mode, third springs in a compressed state are symmetrically arranged between the second sliding plate and the bottom wall of the recovery cavity in a bilateral mode, and a winding device capable of driving the second sliding plate to move downwards to extrude the third springs is arranged in the bottom wall of the recovery cavity.

Furthermore, the door opening and closing device comprises a moving cavity arranged in the top wall of the charging cavity, the electromagnet is fixedly arranged in the left end wall of the moving cavity, a third sliding groove with an upward opening is arranged in the bottom wall of the moving cavity, a second rack is slidably arranged in the third sliding groove, a rotating cavity is communicated between the third sliding groove and the second sliding groove, a second gear meshed with the first rack and the second rack is rotatably arranged in the rotating cavity, a magnetic suction block capable of being attracted by the electromagnet is slidably arranged in the moving cavity, a transmission cavity is arranged in the bottom wall of the moving cavity, a second rotating shaft is rotatably arranged between the transmission cavity and the moving cavity, a reel is fixedly arranged at the tail end of the second rotating shaft in the moving cavity, and a first torsion spring is arranged between the reel and the upper end wall and the lower end wall of the moving cavity, the winding of reel surface have with magnetism inhale a piece fixed connection's first acting as go-between, in the transmission cavity the end of second pivot is fixed and is provided with first bevel gear, the rotatable third pivot that is provided with in the transmission cavity right side end wall, in the transmission cavity the end of third pivot is fixed be provided with the second bevel gear of first bevel gear meshing, be provided with rotatable worm in the wall of swing cavity left side end, the worm with by second torsional spring connection between the third pivot, rotatable being provided with in the swing cavity is used for fixing the fourth pivot of swing door, fourth pivot external fixation be provided with worm gear of worm meshing, be provided with in the wall of swing cavity diapire be used for the locking device of swing door locking.

Further, locking device includes the ascending fourth sliding tray of opening that sets up in the swing chamber diapire, slidable is provided with the top in the fourth sliding tray and stretches into locking lever in the locking inslot that sets up in the swing door diapire, the locking lever with be provided with the fourth spring between fourth sliding tray bottom wall, be provided with the inclined hole that link up about in the locking lever, what set up in the chamber right side end wall that charges runs through the fifth sliding tray of fourth sliding tray, slidable is provided with the ejector pin in the fifth sliding tray, the ejector pin with be provided with between fifth sliding tray top wall the ejector pin drives after shifting the resetting means that the ejector pin resets.

Furthermore, the winding device comprises a winding cavity arranged in the bottom wall of the recovery cavity, a fifth rotating shaft is rotatably arranged between the winding cavity and the gear cavity, a third gear is fixedly arranged at the tail end of the fifth rotating shaft in the gear cavity, a winding wheel is fixedly arranged at the tail end of the fifth rotating shaft in the winding cavity, a second stay wire fixedly connected with a second sliding plate is wound on the outer surface of the winding wheel, a sliding cavity with a right opening is arranged in the end wall at the left side of the gear cavity, a sliding frame is slidably arranged in the sliding cavity, a fifth spring is arranged between the sliding frame and the top wall of the sliding cavity, a driving motor is fixedly arranged in the end wall at the right side of the sliding frame, a fourth gear meshed with the third gear is fixedly arranged at the tail end of an output shaft of the driving motor, and can be meshed with the first gear after the sliding frame moves upwards, the sliding cavity bottom wall with the UNICOM between recovery cavity bottom wall is provided with hydraulic pressure pipeline, hydraulic pressure pipeline is close to slidable in the sliding cavity one end be provided with carriage fixed connection's slide bar, hydraulic pressure pipeline is close to slidable is provided with the push pedal in recovery cavity one side.

The invention has the beneficial effects that: the storage battery charging equipment for the electric vehicle can realize automatic charging of the battery, can conveniently realize placement of a low-power battery and taking of a full-power battery when the equipment is used, can borrow the full-power battery only after the low-power battery is placed, avoids battery loss, and is small in occupied area, low in putting cost, high in automation degree, convenient to operate and worthy of popularization.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of the overall structure of an electric vehicle battery charging apparatus according to the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is a left side view of the fuselage of fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The electric vehicle storage battery charging equipment described in conjunction with the attached drawings 1-4 comprises a machine body 10 and a rotary cavity 33 arranged in the machine body 10, wherein a gear cavity 11 is arranged in the end wall of the left side of the rotary cavity 33, a first rotating shaft 31 is rotatably arranged between the gear cavity 11 and the rotary cavity 33, a first gear 12 is fixedly arranged at the tail end of the first rotating shaft 31 in the gear cavity 11, a first chain wheel 32 which is bilaterally symmetrical is fixedly arranged on the outer surface of the first rotating shaft 31 in the rotary cavity 33, rotatable second chain wheels 35 are symmetrically arranged on the end walls of the left side and the right side of the rotary cavity 33, the second chain wheels 35 are connected with the first chain wheels 32 through chains 34 in a transmission fit manner, a plurality of rotatable fixing frames 29 are equidistantly arranged between the left side chain wheel 34 and the right chain wheel 34, and a charging cavity 45 with a downward opening is, a swing cavity 47 with a rightward opening is arranged in the end wall on the right side of the charging cavity 45, a swing door 46 is rotatably arranged in the swing cavity 47, a door opening and closing device 99 for controlling the opening and closing of the swing door 46 is arranged in the top wall of the charging cavity 45, a first sliding groove 70 with an opposite opening is arranged between the front end wall and the rear end wall of the charging cavity 45, a first sliding plate 72 is slidably arranged in the first sliding groove 70, a first spring 71 is arranged between the first sliding plate 72 and the end wall of the first sliding groove 70, a battery 42 is arranged in the charging cavity 45, a charging contact 40 is arranged at the top of the battery 42, a second sliding groove 39 with a downward opening is arranged in the top wall of the charging cavity 45, a first rack 38 matched with the charging contact 40 is slidably arranged in the second sliding groove 39, and a second spring 36 is arranged between the first rack 38 and the top wall of the second sliding groove 39, the first rack 38 can charge the battery 42 through the charging contact 40, when the charging voltage of the battery 42 is larger, the adsorption force of the electromagnet 30 electrically connected with the first rack 38 is increased, so that the door opening and closing device 99 is driven to accumulate energy, the bottom wall of the rotary cavity 33 is communicated with a recovery cavity 28 with a right opening, a second sliding plate 27 is arranged in the recovery cavity 28 in a vertically sliding mode, third springs 25 in a compression state are symmetrically arranged between the second sliding plate 27 and the bottom wall of the recovery cavity 28 in a left-right mode, and a winding device 98 capable of driving the second sliding plate 27 to move downwards to extrude the third springs 25 is arranged in the bottom wall of the recovery cavity 28.

Beneficially, the door opening and closing device 99 includes a moving cavity 67 disposed in the top wall of the charging cavity 45, the electromagnet 30 is fixedly disposed in the left end wall of the moving cavity 67, a third sliding groove 68 with an upward opening is disposed in the bottom wall of the moving cavity 67, a second rack 69 is slidably disposed in the third sliding groove 68, a rotating cavity 41 is disposed in communication between the third sliding groove 68 and the second sliding groove 39, a second gear 37 engaged with the first rack 38 and the second rack 69 is rotatably disposed in the rotating cavity 41, a magnetic attraction block 66 attracted by the electromagnet 30 is slidably disposed in the moving cavity 67, a transmission cavity 43 is disposed in the bottom wall of the moving cavity 67, a second rotating shaft 62 is rotatably disposed between the transmission cavity 43 and the moving cavity 67, and a reel 63 is fixedly disposed at the end of the second rotating shaft 62 in the moving cavity 67, a first torsion spring 64 is arranged between the reel 63 and the upper and lower end walls of the moving cavity 67, a first pull wire 65 fixedly connected with the magnetic block 66 is wound on the outer surface of the reel 63, a first bevel gear 61 is fixedly arranged at the tail end of the second rotating shaft 62 in the transmission cavity 43, a third rotating shaft 44 is rotatably arranged in the right end wall of the transmission cavity 43, a second bevel gear 60 engaged with the first bevel gear 61 is fixedly arranged at the tail end of the third rotating shaft 44 in the transmission cavity 43, a rotatable worm 59 is arranged in the left end wall of the swinging cavity 47, the worm 59 is connected with the third rotating shaft 44 through a second torsion spring 56, a fourth rotating shaft 58 for fixing the swing door 46 is rotatably arranged in the swing cavity 47, a worm wheel 57 engaged with the worm 59 is fixedly arranged on the outer surface of the fourth rotating shaft 58, a locking device 97 for locking the swing door 46 is arranged in the bottom wall of the swing cavity 47.

Advantageously, the locking device 97 includes a fourth sliding groove 51 with an upward opening, which is disposed in the bottom wall of the swing cavity 47, a locking rod 53 with a top portion extending into a locking groove 55 disposed in the bottom wall of the swing door 46 is slidably disposed in the fourth sliding groove 51, a fourth spring 52 is disposed between the locking rod 53 and the bottom wall of the fourth sliding groove 51, a right-left through inclined hole 54 is disposed in the locking rod 53, a fifth sliding groove 49 disposed in the right end wall of the charging cavity 45 and penetrating through the fourth sliding groove 51 is disposed in the right end wall of the charging cavity 45, an ejector rod 48 is slidably disposed in the fifth sliding groove 49, and a reset device 50 for driving the ejector rod 48 to reset after the ejector rod 48 displaces is disposed between the ejector rod 48 and the top wall of the fifth sliding groove 49.

Advantageously, the winding device 98 includes a winding chamber 22 disposed in the bottom wall of the recycling chamber 28, a fifth rotating shaft 21 is rotatably disposed between the winding chamber 22 and the gear chamber 11, a third gear 20 is fixedly disposed at the end of the fifth rotating shaft 21 in the gear chamber 11, a winding wheel 23 is fixedly disposed at the end of the fifth rotating shaft 21 in the winding chamber 22, a second pull wire 24 fixedly connected with the second sliding plate 27 is wound on the outer surface of the winding wheel 23, a sliding chamber 15 with a right opening is disposed in the left end wall of the gear chamber 11, a sliding frame 14 is slidably disposed in the sliding chamber 15, a fifth spring 13 is disposed between the sliding frame 14 and the top wall of the sliding chamber 15, a driving motor 16 is fixedly disposed in the right end wall of the sliding frame 14, a fourth gear 17 engaged with the third gear 20 is fixedly disposed at the end of the output shaft of the driving motor 16, the fourth gear 17 can be meshed with the first gear 12 after moving upwards along with the sliding frame 14, a hydraulic pipeline 19 is arranged between the bottom wall of the sliding cavity 15 and the bottom wall of the recovery cavity 28 in a communicated manner, the hydraulic pipeline 19 is close to a sliding rod 18 which is fixedly connected with the sliding frame 14 and can slide in one end of the sliding cavity 15, and a top push plate 26 is arranged in one side of the recovery cavity 28 in a sliding manner and is close to the hydraulic pipeline 19.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

Sequence of mechanical actions of the whole device:

when the device of the present invention works, the rotating cavity 41 charges the battery 42 through the charging electric contact 40, when the voltage stored in the battery 42 increases, the attraction force of the electromagnet 30 increases to drive the magnetic attraction block 66 to move left, the magnetic attraction block 66 moves left to drive the reel 63 to rotate, thereby driving the second rotating shaft 62 to rotate, thereby driving the first bevel gear 61 to rotate, thereby driving the second bevel gear 60 to rotate, thereby driving the third rotating shaft 44 to rotate, at this time, because the locking rod 53 is inserted into the locking groove 55, the swinging door 46 cannot rotate, at this time, the third rotating shaft 44 rotates to drive the second torsion spring 56 to rotate to store energy, one end of the battery 42 with power loss is inserted into the recycling cavity 28, at this time, the battery 42 downwardly presses the push plate 26, at this time, the push plate 26 drives the sliding rod 18 to move upwards through the hydraulic oil in the hydraulic pipeline 19, so as to drive the sliding rack 14 to move upwards, so as to drive the fourth gear 17 to move upwards to be engaged with the first gear 12, and after the fourth gear 17 is separated from the third gear 20, the second sliding plate 27 moves upwards under the action of the third spring 25, but because the battery 42 with insufficient power is not completely inserted into the recovery cavity 28, the second sliding plate 27 cannot move upwards, at this time, because the fourth gear 17 is engaged with the first gear 12, at this time, the driving motor 16 is started to drive the fourth gear 17 to rotate, so as to drive the first gear 12 to rotate, so as to drive the fifth rotating shaft 21 to rotate, so as to drive the chain 34 to rotate, so as to drive the fixed frame 29 to move, when the battery 42 with full power is moved to be right above the recovery cavity 28, the battery 42 with insufficient power is completely pushed into the recovery cavity 28, at this time, the battery 42 with insufficient power does not press the top push plate 26, at this time, the pushing plate 26 moves upwards, and at the same time, the sliding rack 14 moves downwards, so as to drive the fourth gear 17 to mesh with the third gear 20, at this time, the driving motor 16 is started to drive the third gear 20 to rotate, so as to drive the winding wheel 23 to rotate and release the second pull wire 24, at this time, the second sliding plate 27 moves upwards under the action of the third spring 25, so as to push the insufficient battery 42 upwards, when the insufficient battery 42 abuts against the pushing rod 48, the pushing rod 48 moves right to push the locking rod 53 to move downwards out of the locking groove 55, at this time, the worm 59 rotates under the action of the second torsion spring 56, so as to drive the worm wheel 57 to rotate, so as to drive the fourth rotating shaft 58 to rotate and open the swinging door 46, at this time, the fully charged battery 42 can be taken out, and when the battery 42 moves towards the right side of the charging cavity 45, the first rack 38 moves down to drive the second rack 69 to move up, and the electromagnet 30 is powered off, at this time, the first torsion spring 64 drives the reel 63 to rotate reversely, so as to drive the reel 63 to rotate reversely and wind the first pull wire 65, so as to drive the magnetic block 66 to move right, at this time, the magnetic block 66 is abutted against the second rack 69 and cannot move right, when the fully charged battery 42 is completely removed from the charging cavity 45, the second sliding plate 27 continues to move up to push the insufficient battery 42 to move up, when the insufficient battery 42 moves up to above the battery 42, the charging electric contact 40 is abutted against the first rack 38, so as to drive the second rack 69 to move down to the third sliding groove 68, the magnetic block 66 moves right under the action of the reel 63, and at the same time, the reel 63 rotates to drive the first bevel gear 61 to rotate, thereby drive the second bevel gear 60 and rotate, thereby drive the worm 59 and rotate, thereby drive the swing door 46 rotate and seal the swing chamber 47, at this moment the locking lever 53 inserts again in the locking groove 55 will swing door 46 locking, simultaneously the first rack 38 with the electric shock 40 butt of charging is the battery 42 of insufficient voltage and charges, thereby conveniently takes next time.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an electric motor car battery charging outfit, includes the fuselage and set up in gyration chamber in the fuselage, its characterized in that: a gear cavity is arranged in the end wall of the left side of the rotary cavity, a first rotating shaft is rotatably arranged between the gear cavity and the rotary cavity, a first gear is fixedly arranged at the tail end of the first rotating shaft in the gear cavity, first chain wheels which are bilaterally symmetrical are fixedly arranged on the outer surface of the first rotating shaft in the rotary cavity, rotatable second chain wheels are symmetrically arranged on the left end wall and the right end wall of the rotary cavity, the second chain wheels are connected with the first chain wheels in a transmission fit manner through chains, a plurality of rotatable fixing frames are equidistantly arranged between the left chain and the right chain, a charging cavity with a downward opening is arranged in the bottom wall of the fixing frame, a swinging cavity with a rightward opening is arranged in the end wall of the right side of the charging cavity, a swinging door is rotatably arranged in the swinging cavity, and a door opening and closing device for controlling, a first sliding groove with opposite openings is arranged between the front end wall and the rear end wall of the charging cavity, a first sliding plate is arranged in the first sliding groove in a sliding manner, a first spring is arranged between the first sliding plate and the end wall of the first sliding groove, a battery is placed in the charging cavity, a charging electric shock is arranged at the top of the battery, a second sliding groove with a downward opening is arranged in the top wall of the charging cavity, a first rack matched with the charging electric shock is arranged in the second sliding groove in a sliding manner, a second spring is arranged between the first rack and the top wall of the second sliding groove, the first rack can charge the battery through the charging electric shock, when the charging voltage of the battery is higher, the adsorption force of an electromagnet electrically connected with the first rack is increased, so that the door opening and closing device is driven to accumulate energy, and a recovery cavity with a rightward opening is communicated with the bottom wall of the rotary cavity, the recycling cavity is internally provided with a second sliding plate which can slide up and down, third springs in a compressed state are symmetrically arranged between the second sliding plate and the bottom wall of the recycling cavity in a left-right mode, and a winding device which can drive the second sliding plate to move downwards to extrude the third springs is arranged in the bottom wall of the recycling cavity.

2. An electric vehicle battery charging apparatus as set forth in claim 1, wherein: the door opening and closing device comprises a moving cavity arranged in the top wall of the charging cavity, the electromagnet is fixedly arranged in the left end wall of the moving cavity, a third sliding groove with an upward opening is arranged in the bottom wall of the moving cavity, a second rack is slidably arranged in the third sliding groove, a rotating cavity is communicated between the third sliding groove and the second sliding groove, a second gear meshed with the first rack and the second rack is rotatably arranged in the rotating cavity, a magnetic suction block capable of being attracted by the electromagnet is slidably arranged in the moving cavity, a transmission cavity is arranged in the bottom wall of the moving cavity, a second rotating shaft is rotatably arranged between the transmission cavity and the moving cavity, a reel is fixedly arranged at the tail end of the second rotating shaft in the moving cavity, and a first torsion spring is arranged between the reel and the upper end wall and the lower end wall of the moving cavity, the winding of reel surface have with magnetism inhale a piece fixed connection's first acting as go-between, in the transmission cavity the end of second pivot is fixed and is provided with first bevel gear, the rotatable third pivot that is provided with in the transmission cavity right side end wall, in the transmission cavity the end of third pivot is fixed be provided with the second bevel gear of first bevel gear meshing, be provided with rotatable worm in the wall of swing cavity left side end, the worm with by second torsional spring connection between the third pivot, rotatable being provided with in the swing cavity is used for fixing the fourth pivot of swing door, fourth pivot external fixation be provided with worm gear of worm meshing, be provided with in the wall of swing cavity diapire be used for the locking device of swing door locking.

3. An electric vehicle battery charging apparatus as set forth in claim 1, wherein: locking device includes the ascending fourth sliding tray of opening that sets up in the swing chamber diapire, slidable is provided with the top in the fourth sliding tray and stretches into locking lever in the locking inslot that sets up in the swing door diapire, the locking lever with be provided with the fourth spring between the fourth sliding tray bottom wall, be provided with the inclined hole that link up about in the locking lever, what set up in the chamber right side end wall that charges runs through the fifth sliding tray of fourth sliding tray, slidable is provided with the ejector pin in the fifth sliding tray, the ejector pin with be provided with between the fifth sliding tray top wall the ejector pin drives after shifting the resetting means that the ejector pin resets.

4. An electric vehicle battery charging apparatus as set forth in claim 1, wherein: the winding device comprises a winding cavity arranged in the bottom wall of the recycling cavity, a fifth rotating shaft is rotatably arranged between the winding cavity and the gear cavity, a third gear is fixedly arranged at the tail end of the fifth rotating shaft in the gear cavity, a winding wheel is fixedly arranged at the tail end of the fifth rotating shaft in the winding cavity, a second stay wire fixedly connected with a second sliding plate is wound on the outer surface of the winding wheel, a sliding cavity with a right opening is arranged in the end wall at the left side of the gear cavity, a sliding frame is slidably arranged in the sliding cavity, a fifth spring is arranged between the sliding frame and the top wall of the sliding cavity, a driving motor is fixedly arranged in the end wall at the right side of the sliding frame, a fourth gear meshed with the third gear is fixedly arranged at the tail end of an output shaft of the driving motor, and the fourth gear can be meshed with the first gear after moving upwards along with the, the sliding cavity bottom wall with the UNICOM between recovery cavity bottom wall is provided with hydraulic pressure pipeline, hydraulic pressure pipeline is close to slidable in the sliding cavity one end be provided with carriage fixed connection's slide bar, hydraulic pressure pipeline is close to slidable is provided with the push pedal in recovery cavity one side.