CN114194050A

CN114194050A - Intelligent charging pile for new energy automobile

Info

Publication number: CN114194050A
Application number: CN202111415358.7A
Authority: CN
Inventors: 刘南清
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-03-18

Abstract

The invention relates to a charging pile, in particular to an intelligent charging pile for a new energy automobile. The invention provides an intelligent charging pile for a new energy automobile, which has a rainproof function and an anti-collision function and is convenient for folding a cable. The utility model provides a new energy automobile intelligent charging stake, includes: the base is provided with a shell; a coin-freed device, a casing of which is provided with a coin-freed device; the LCD display screen is arranged on the shell and is positioned on the upper side of the coin slot machine; the charging gun is arranged on the upper side of the shell; the cable is arranged between the base and the charging gun; the fixing assembly is arranged between the charging gun and the shell; and a winding assembly is arranged between the shell and the fixing assembly. According to the invention, the spring pin passes through the inclined surface part of the clamping block, and the spring pin can be automatically reset and clamped on the clamping block, so that the charging gun can be prevented from sliding off, and the effect of fixing the charging gun is realized.

Description

Intelligent charging pile for new energy automobile

Technical Field

The invention relates to a charging pile, in particular to an intelligent charging pile for a new energy automobile.

Background

Along with china's dynamics of administering to the atmosphere pollution constantly increases, new energy automobile is as the novel vehicle that pollutes less and use cost is lower, and its development prospect is widely seen, has very big development potential, and along with the constantly increasing of new energy automobile, the charging device who corresponds is also in corresponding increase, and the tradition fills electric pile in the in-process that uses, and the cable of the rifle that charges draws in convenient neatly inadequately in, and does not have rain-proof function, leads to the fact the damage to filling electric pile easily.

Patent application CN207594748U, published Japanese 20180710 discloses an intelligent charging pile for new energy automobiles, the structure of which comprises a charging pile main body, a front mounting plate, an operation interface, a bottom fixing seat, a charging gun placing port, a charging gun cable and a wiring port, wherein the left half part of the charging gun movably penetrates through the charging gun placing port, the charging gun comprises a charging gun main body, a holding handle, a charging plug structure, an access port and a damping spring cover, the charging plug structure is electrically connected with the left end surface of the charging gun main body, and the damping spring cover is movably connected with the outer side surface of the charging plug structure. The safety performance of equipment has effectively been improved, however, should fill electric pile and not be equipped with crashproof function, when people's the car that falls, can not in time remind people, collide the electric pile of filling easily.

Therefore, according to the above-mentioned circumstances that appears, need design one kind in the market and have rain-proof function, crashproof function and cable and draw in convenient new energy automobile intelligent charging stake in.

Disclosure of Invention

The invention aims to provide a new energy automobile intelligent charging pile with a rainproof function, an anti-collision function and convenience in cable folding, and the new energy automobile intelligent charging pile can overcome the defects that in the using process of the traditional charging pile provided in the background technology, cables of a charging gun are not folded conveniently and tidily enough, do not have the rainproof function, and are easy to damage the charging pile.

The technical scheme is as follows: the utility model provides a new energy automobile intelligent charging stake, includes:

the base is provided with a shell;

a coin-freed device, a casing of which is provided with a coin-freed device;

the LCD display screen is arranged on the shell and is positioned on the upper side of the coin slot machine;

the charging gun is arranged on the upper side of the shell;

the cable is arranged between the base and the charging gun;

the fixing assembly is arranged between the charging gun and the shell;

and a winding assembly is arranged between the shell and the fixing assembly.

Advantageously, the fixing assembly comprises:

the upper part of the shell is provided with a button;

the middle of the inside of the upper side of the shell is provided with an electric push rod;

the clamping block is arranged on a telescopic rod of the electric push rod and is connected with the shell in a sliding mode;

the spring pin is arranged on the upper side of the charging gun and is in contact with the clamping block.

Advantageously, the winding assembly comprises:

the supporting plates are arranged on two sides of the shell;

the upper side and the lower side of the supporting plate are both provided with sliding blocks in a sliding manner;

the second rotating shaft is rotatably arranged between the two sliding blocks on the same side;

the first rotating shafts are rotatably arranged between the upper side and the lower side of the inner walls of the two supporting plates;

the two first rotating shafts and the two second rotating shafts are respectively provided with a roller, and the four rollers are rotatably connected with the cable;

the first spring rod is connected between the sliding block and the supporting plate on the same side.

Advantageously, a clamping assembly is also included, the clamping assembly comprising:

iron plates are symmetrically arranged on the upper side and the lower side of the shell in a sliding manner;

two second spring rods are connected between the iron plate and the shell;

six clamping blocks are uniformly arranged on the inner side of the iron plate and are in contact with the sliding blocks on the same side.

Advantageously, a wire takeup assembly is also included, the wire takeup assembly comprising:

the middle of the upper side of the shell is provided with a first distance sensor;

the middle of the shell is provided with a second distance sensor;

two electromagnets are arranged on two sides of the shell and matched with the iron plates on the same side.

Advantageously, a collision avoidance assembly is also included, the collision avoidance assembly comprising:

the lower side of the shell is provided with a support frame;

the upper part of the supporting frame is provided with two third spring rods;

the contact block is arranged between the two third spring rods;

the upper part of the support frame is provided with a third distance sensor;

the top of the contact block is provided with a trigger plate which is matched with the third distance sensor;

the upper part of the support frame is provided with a buzzer.

Advantageously, a rain shield assembly is also included, the rain shield assembly comprising:

the middle of the top of the shell is provided with a support rod;

the top of the supporting rod is provided with a rain baffle;

the drain pipe is arranged at the bottom of the rain baffle.

The charging pile is characterized by further comprising a control box, the control box is mounted on the lower side of the shell, a switching power supply, a control module and a power supply module are mounted in the control box, the switching power supply supplies power to the whole charging pile, the output end of the switching power supply is electrically connected with the power supply module, the power supply module is connected with a power supply main switch through a circuit, and the control module is electrically connected with the power supply module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor, the second distance sensor, the third distance sensor, the button, the LCD display screen and the buzzer are electrically connected with the control module; the electromagnet and the electric push rod are connected with the control module through the relay control module.

Compared with the prior art, the invention has the following advantages: 1. according to the invention, the spring pin passes through the inclined surface part of the clamping block, and the spring pin can be automatically reset and clamped on the clamping block, so that the charging gun can be prevented from sliding off, and the effect of fixing the charging gun is realized;

2. the first spring rod is reset to drive the slide block on the same side to move leftwards, so that the roller on the left side is driven to move leftwards, and the cable is retracted;

3. the iron plate is driven to move inwards by resetting the second spring rod, so that the clamping block is driven to move inwards, the clamping block can block the sliding block, the first spring rod is prevented from rebounding, charging is influenced, manual pulling is not needed all the time, and the automobile can be charged conveniently;

4. the control module controls the electromagnet to work, so that the electromagnet has magnetic force, and the electromagnet can suck the iron plates on the same side, so that the clamping block cannot block the sliding block, and the labor can be saved;

5. the control module controls the buzzer to buzz, so that people can be reminded of stopping backing a car, collision of the charging pile is prevented, and an anti-collision effect is achieved;

6. the rain shielding plate can shield rain from leaking on the electronic device, so that the electric leakage is prevented, the electronic device is prevented from being damaged, and the rain shielding effect is realized.

Drawings

Fig. 1 is a schematic perspective view of a first viewing angle according to the present invention.

Fig. 2 is a schematic perspective view of a second viewing angle according to the present invention.

Fig. 3 is a perspective view of the fixing assembly of the present invention.

Fig. 4 is a schematic view of the mounting assembly of the charging gun of the present invention.

Fig. 5 is a schematic perspective view of a first portion of the winding assembly of the present invention.

Fig. 6 is a perspective view of a second portion of the winding assembly of the present invention.

Fig. 7 is a perspective view of a third portion of the winding assembly of the present invention.

Fig. 8 is a perspective view of a fourth portion of the winding assembly of the present invention.

Fig. 9 is a perspective view of a first portion of the clamping assembly of the present invention.

Fig. 10 is a perspective view of a second portion of the clamping assembly of the present invention.

Fig. 11 is a schematic perspective view of a wire take-up assembly according to the present invention.

Fig. 12 is a schematic view of a wire takeup member of the present invention in an installed position.

Fig. 13 is a schematic perspective view of the collision avoidance assembly of the present invention.

Fig. 14 is a perspective view of the rain shield assembly of the present invention.

FIG. 15 is a circuit block diagram of the present invention.

Fig. 16 is a schematic circuit diagram of the present invention.

The meaning of the reference symbols in the figures: 1: base, 2: outer shell, 3: coin selector, 4: LCD display screen, 5: control box, 6: cable, 7: charging gun, 8: fixing component, 81: button, 82: electric putter, 83: clamping block, 84: spring pin, 9: wire winding assembly, 91: support plate, 92: first rotating shaft, 93: roller, 94: first spring bar, 95: slider, 96: second rotation shaft, 10: clamping assembly, 101: second spring bar, 102: iron plate, 103: a latch, 11: wire take-up assembly, 111: first distance sensor, 112: second distance sensor, 113: electromagnet, 12: anticollision subassembly, 121: support, 122: third spring rod, 123: contact block, 124: third distance sensor, 125: trigger plate, 126: buzzer, 13: rain shield assembly, 131: support rod, 132: rain shield, 133: and a water discharge pipe.

Detailed Description

All of the features disclosed in this application, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations where mutually exclusive features and/or steps are present.

Any feature disclosed in this application (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The technical solutions in the novel embodiments will be described clearly and completely with reference to fig. 1 to 16 in 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 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.

As shown in fig. 1 to 16, a new energy automobile intelligent charging stake, including base 1, shell 2, coin selector 3, LCD display screen 4, cable 6, rifle 7 charges, fixed subassembly 8 and wire winding subassembly 9, be equipped with shell 2 on the

base

1, 2 left sides of shell are equipped with

coin selector

3, 2 left sides of shell are equipped with LCD display screen 4, LCD display screen 4 is located 3 upsides of coin selector, rifle 7 charges has been placed to 2 upper right sides of shell, be equipped with cable 6 on the base 1 between right side and the rifle 7 that charges, be equipped with fixed subassembly 8 between rifle 7 and the 2 right parts of shell of charging, be equipped with wire winding subassembly 9 between 2 right parts of shell and the fixed subassembly 8.

Fixed subassembly 8 is equipped with button 81 including button 81, electric putter 82, clamp splice 83 and spring catch 84, and shell 2 upper right portion front side is equipped with the button 81, and the inside centre in the upper right side of shell 2 is installed electric putter 82, is equipped with clamp splice 83 on electric putter 82's the telescopic link, and clamp splice 83 and shell 2 sliding type are connected, and the upper left side of rifle 7 that charges is equipped with spring catch 84, spring catch 84 and clamp splice 83 contact.

Wire winding subassembly 9 is including backup pad 91, first pivot 92, gyro wheel 93, first spring rod 94, slider 95 and second pivot 96, both sides all are equipped with backup pad 91 around 2 right parts of shell, both sides all slidingtype is equipped with slider 95 about backup pad 91, the rotary type is equipped with second pivot 96 between two sliders 95 of homonymy, equal rotary type is equipped with first pivot 92 between both sides about two backup pad 91 inner wall front portions, all be equipped with gyro wheel 93 on two first pivot 92 and two second pivot 96, four gyro wheels 93 all are connected with the cable 6 rotary type, be connected with first spring rod 94 between the backup pad 91 of slider 95 and homonymy.

The clamping device comprises a clamping assembly 10, the clamping assembly 10 comprises second spring rods 101, iron plates 102 and clamping blocks 103, the iron plates 102 are symmetrically arranged on the upper side and the lower side of the right portion of the shell 2 in a front-back sliding mode, the two second spring rods 101 are connected between the iron plates 102 and the shell 2, the six clamping blocks 103 are evenly arranged on the inner sides of the iron plates 102, and the clamping blocks 103 are in contact with the sliding blocks 95 on the same side.

Still including receiving line subassembly 11, receiving line subassembly 11 is equipped with first distance sensor 111 in the middle of the upper right side of shell 2 including first distance sensor 111, second distance sensor 112 and electro-magnet 113, shell 2 middle second distance sensor 112 that is equipped with, both sides all are equipped with two electro-magnets 113 around the shell 2 right part, and electro-magnet 113 cooperates with the iron plate 102 of homonymy.

Still including preventing collision subassembly 12, prevent collision subassembly 12 including support frame 121, third spring lever 122, contact piece 123, third distance sensor 124, trigger plate 125 and

bee calling organ

126, 2 right side undersides of shell are equipped with support frame 121, support frame 121 upper right portion is equipped with two third spring levers 122, be equipped with contact piece 123 between two third spring lever 122 right parts, support frame 121 upper right portion is equipped with third distance sensor 124, contact piece 123 top left side is equipped with trigger plate 125, trigger plate 125 and the cooperation of third distance sensor 124, support frame 121 upper right portion is equipped with bee calling organ 126.

The rain-proof component 13 is further included, the rain-proof component 13 comprises a support rod 131, a rain-proof plate 132 and a drain pipe 133, the support rod 131 is arranged in the middle of the top of the shell 2, the rain-proof plate 132 is arranged at the top of the support rod 131, and the drain pipe 133 is arranged at the bottom of the right rear side of the rain-proof plate 132.

The charging pile is characterized by further comprising a control box 5, the control box 5 is mounted on the lower side of the front portion of the shell 2, a switching power supply, a control module and a power supply module are mounted in the control box 5, the switching power supply supplies power to the whole charging pile, the output end of the switching power supply is electrically connected with the power supply module, the power supply module is connected with a power supply main switch through a circuit, and the control module is electrically connected with the power supply module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor 111, the second distance sensor 112, the third distance sensor 124, the button 81, the LCD display screen 4 and the buzzer 126 are electrically connected with the control module; the electromagnet 113 and the electric push rod 82 are both connected with the control module through the relay control module.

When people need to charge a new energy battery automobile, the new energy automobile intelligent charging pile can be used, firstly, people need to press a power supply main switch to power on the charging pile, when people drive the new energy automobile to the side of the charging pile, then, coins can be manually put into the coin inserting device 3, so that the LCD display screen 4 can display the electric quantity information of the number of the put-in coins, then, the fixing component 8 is pressed to operate, the control module controls the fixing component 8 to reset after thirty seconds of operation, so that people can take out the charging gun 7 and pull the charging gun 7 to operate, so that the cable 6 is pulled out, the winding component 9 operates, then, people can align the muzzle of the charging gun 7 to the charging port of the new energy automobile, so that the new energy automobile can be charged, after the charging is completed, people can put the charging gun 7 back to the original position, the winding component 9 reversely operates to withdraw the cable 6, then, people press the main switch of the power supply again to cut off the power of the charging device.

After people put coins on the coin inserting device 3, the LCD display screen 4 can display the electric quantity of the coins of the corresponding amount, then people can press the button 81, the control module controls the telescopic rod of the electric push rod 82 to be shortened to the minimum position, the telescopic rod of the electric push rod 82 drives the clamping block 83 to move upwards, the clamping block 83 cannot clamp the spring pin 84, people can take out the charging gun 7 conveniently, thirty seconds later, the control module controls the telescopic rod of the electric push rod 82 to extend to the maximum position, the telescopic rod of the electric push rod 82 drives the clamping block 83 to move downwards to reset, after the telescopic rod of the electric push rod 82 extends to the maximum position, the control module controls the telescopic rod of the electric push rod 82 to stop working, after charging of a new-energy automobile is completed, people can put the charging gun 7 back, the spring pin 84 is in contact with the clamping block 83, the spring pin 84 moves downwards, and when the spring pin 84 crosses the inclined plane part of the clamping block 83, the spring pin 84 can be automatically reset and clamped on the clamping block 83, so that the charging gun 7 can be prevented from sliding off, and the effect of fixing the charging gun 7 is realized.

When people take out rifle 7 that charges, make cable 6 pulled out, thereby drive two gyro wheels 93 on left equal rightward movement and two gyro wheels 93 on right side and rotate, and then make first pivot 92 and second pivot 96 all rotate, when two gyro wheels on left 93 move rightward, make the slider 95 of homonymy move rightward, first spring rod 94 is compressed, when people loose hand after the completion of charging, because first spring rod 94 resets and drives the slider 95 of homonymy and move leftward, thereby drive left gyro wheel 93 and move leftward, make cable 6 be withdrawed, thereby make first pivot 92 and the equal antiport of second pivot 96 reset, and then make two gyro wheel 93 antiport on right side.

When the sliding block 95 moves rightwards, the sliding block 95 enables the iron plate 102 to move outwards, so as to drive the clamping block 103 to move outwards, the second spring rod 101 is compressed, the iron plate 102 moves outwards and cannot clamp the sliding block 95, when the sliding block 95 continues to move rightwards and crosses the clamping block 103, the second spring rod 101 resets to drive the iron plate 102 to move inwards, so as to drive the clamping block 103 to move inwards, so that the clamping block 103 can block the sliding block 95, the first spring rod 94 is prevented from rebounding, so as to influence charging, manual pulling is not needed, so as to facilitate charging of an automobile, after charging is completed, a person can manually push the iron plate 102 to move outwards, so that the clamping block 103 cannot block the sliding block 95, the sliding block 95 moves leftwards and resets under the action of the first spring rod 94, and when the person looses his hand, the iron plate 102 moves inwards under the action of the resetting of the second spring rod 101, so as to drive the clamping block 103 to move inwards, so that the latch 103 catches the slider 95.

When people put the charging gun 7 back to the original position and the first distance sensor 111 detects that the distance between the cable 6 and the first distance sensor 111 reaches the preset value in the control module, the control module controls the electromagnet 113 to work, so that the electromagnet 113 has magnetic force, at this time, the electromagnet 113 can suck the iron plate 102 at the same side, so that the latch 103 cannot block the slider 95, since the first spring rod 94 is reset to drive the sliding block 95 to move leftwards and reset, when the second distance sensor 112 detects that the distance between the cable 6 and the second distance sensor 112 reaches the preset value in the control module, the control module controls the electromagnet 113 to stop working, the electromagnet 113 loses magnetic force, so that the electromagnet 113 can not attract the iron plate 102 at the same side, under the action of the reset of the second spring rod 101, the iron plate 102 moves inwards, so as to drive the fixture block 103 to move inwards, and the fixture block 103 clamps the sliding block 95.

When people back up and stop beside the charging pile and the automobile is contacted with the contact block 123, the contact block 123 is moved to the left, thereby driving the trigger plate 125 to move leftwards, when the third distance sensor 124 detects that the distance between the trigger plate 125 and the third distance sensor 124 reaches the preset value in the control module, the control module controls the buzzer 126 to sound, can remind people to stop backing a car and prevent the charging pile from colliding, and after hearing the sound, people can move the new energy automobile to the right a little to ensure that the automobile does not contact with the contact block 123, since the third spring rod 122 is reset to move the contact block 123 to the right, thereby moving the trigger plate 125 to the right to reset, when the third distance sensor 124 detects that the distance between the trigger plate 125 and the third distance sensor 124 is greater than the distance in the control module, the control module controls the buzzer 126 to stop working.

When it rains, the rain shield 132 can shield rain from leaking on the electronic device, prevent electric leakage and damage to the electronic device, realize the effect of rain shielding, and rain can flow rightward along the inclination of the rain shield 132 and be discharged through the drain pipe 133.

It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a new energy automobile intelligent charging stake, characterized by includes:

the device comprises a base (1) and a shell (2), wherein the shell (2) is arranged on the base (1);

a coin-in device (3), a coin-in device (3) is arranged on the shell (2);

the LCD display screen (4) is arranged on the shell (2), and the LCD display screen (4) is positioned on the upper side of the coin inserting device (3);

a charging gun (7), wherein the charging gun (7) is arranged on the upper side of the shell (2);

the cable (6) is arranged between the base (1) and the charging gun (7);

the fixing component (8) is arranged between the charging gun (7) and the shell (2);

a winding component (9) is arranged between the shell (2) and the fixing component (8).

2. The intelligent charging pile for the new energy automobile as claimed in claim 1, wherein the fixing component (8) comprises:

a button (81), wherein the button (81) is arranged at the upper part of the shell (2);

the middle of the inside of the upper side of the shell (2) is provided with an electric push rod (82);

the clamping block (83) is arranged on the telescopic rod of the electric push rod (82), and the clamping block (83) is connected with the shell (2) in a sliding manner;

the spring pin (84) is arranged on the upper side of the charging gun (7), and the spring pin (84) is in contact with the clamping block (83).

3. The intelligent charging pile for the new energy automobile as claimed in claim 2, wherein the winding assembly (9) comprises:

the supporting plates (91) are arranged on the two sides of the shell (2);

the upper side and the lower side of the supporting plate (91) are both provided with sliding blocks (95) in a sliding manner;

a second rotating shaft (96) is rotatably arranged between the two sliding blocks (95) on the same side;

the first rotating shafts (92) are rotatably arranged between the upper side and the lower side of the inner walls of the two supporting plates (91);

the two first rotating shafts (92) and the two second rotating shafts (96) are respectively provided with a roller (93), and the four rollers (93) are rotatably connected with the cable (6);

the first spring rod (94) is connected between the first spring rod (94), the sliding block (95) and the supporting plate (91) on the same side.

4. The intelligent charging pile for the new energy automobile as claimed in claim 3, wherein the intelligent charging pile further comprises a clamping assembly (10), and the clamping assembly (10) comprises:

the iron plates (102) are symmetrically arranged on the upper side and the lower side of the shell (2) in a sliding manner;

two second spring rods (101) are connected between the iron plate (102) and the shell (2);

six clamping blocks (103) are uniformly arranged on the inner side of the iron plate (102), and the clamping blocks (103) are in contact with the sliding blocks (95) on the same side.

5. The intelligent charging pile for the new energy automobile as claimed in claim 4, further comprising a wire take-up assembly (11), wherein the wire take-up assembly (11) comprises:

the middle of the upper side of the shell (2) is provided with a first distance sensor (111);

a second distance sensor (112), wherein the middle of the shell (2) is provided with the second distance sensor (112);

two electromagnets (113) are arranged on two sides of the shell (2), and the electromagnets (113) are matched with the iron plates (102) on the same side.

6. The intelligent charging pile for the new energy automobile as claimed in claim 5, wherein the intelligent charging pile further comprises an anti-collision assembly (12), and the anti-collision assembly (12) comprises:

the support frame (121), the support frame (121) is arranged on the lower side of the shell (2);

the upper part of the supporting frame (121) is provided with two third spring rods (122);

the contact block (123) is arranged between the two third spring rods (122);

a third distance sensor (124), wherein the upper part of the support frame (121) is provided with the third distance sensor (124);

the top of the contact block (123) is provided with a trigger plate (125), and the trigger plate (125) is matched with the third distance sensor (124);

a buzzer (126), and the upper part of the supporting frame (121) is provided with the buzzer (126).

7. The intelligent charging pile for the new energy automobile as claimed in claim 6, further comprising a rain shielding component (13), wherein the rain shielding component (13) comprises:

the middle of the top of the shell (2) is provided with a support rod (131);

the top of the supporting rod (131) is provided with a rain shield (132);

a drain pipe (133), and a drain pipe (133) is arranged at the bottom of the rain baffle (132).

8. The intelligent charging pile for the new energy automobile as claimed in claim 7, further comprising a control box (5), wherein the control box (5) is installed on the lower side of the housing (2), a switching power supply, a control module and a power module are installed in the control box (5), the switching power supply supplies power to the whole charging pile, the output end of the switching power supply is electrically connected with the power module, the power module is connected with a main power switch through a circuit, and the control module is electrically connected with the power module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor (111), the second distance sensor (112), the third distance sensor (124), the button (81), the LCD display screen (4) and the buzzer (126) are electrically connected with the control module; the electromagnet (113) and the electric push rod (82) are connected with the control module through the relay control module.