CN113775525A

CN113775525A - Safety control method and system of vacuum pump and new energy automobile

Info

Publication number: CN113775525A
Application number: CN202111318493.XA
Authority: CN
Inventors: 黄查花
Original assignee: Hangzhou Zhike Precision Machinery Co ltd
Current assignee: Hangzhou Zhike Precision Machinery Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2021-12-10

Abstract

The invention discloses a safety control method and a safety control system for a vacuum pump and a new energy automobile, wherein the safety control method comprises the following steps of: s1, detecting negative pressure in a cylinder by installing a vacuum degree sensor in the cylinder to obtain a numerical value a; s2, detecting the air pressure outside the cylinder for multiple times through an air pressure detection mechanism designed outside the cylinder, and obtaining numerical values b1, b2 and b 3; s3, comparing the numerical value a obtained by measuring in S1 and S2 with b1, b2 and b3 in sequence to obtain vacuum degrees c1, c2 and c3, and taking the average value c of the vacuum degrees, wherein if the vacuum degree c is within a set value, the vacuum pump does not need to be adjusted, if the vacuum degree numerical value is larger, the negative pressure in the vacuum pump needs to be reduced, otherwise, the negative pressure is increased.

Description

Safety control method and system of vacuum pump and new energy automobile

Technical Field

The invention relates to the technical field of vacuum pump systems, in particular to a safety control method and system of a vacuum pump and a new energy automobile.

Background

The electric automobile is driven by the motor, and a traditional engine is cancelled, so that a vacuum source is lost, and vacuum assistance cannot be provided for an automobile brake master cylinder. The vacuum booster pump of the electric automobile is used for making up for the deficiency. The vehicle-mounted power supply is adopted to provide power, the motor on the pump body is pushed to perform piston motion so as to generate vacuum, and a unique and reliable vacuum source is provided for hydraulic braking systems of various vehicle types such as electric vehicles, hybrid electric vehicles, electric sightseeing vehicles, electric field vehicles and the like, so that the braking performance of the whole vehicle is effectively improved, and power assistance can be provided for the braking system and the steering system.

The vacuum pump is used for generating negative pressure to increase braking force, the vacuum pump of the automobile generator is also called a booster pump, the booster pump is a booster device of a brake braking system and a steering system, the vacuum boosting effect depends on relative vacuum degree, namely the ratio of the negative pressure value in a booster cylinder to the external atmospheric pressure value, the vacuum pumping capacity of the vacuum pump is actually based on the relative vacuum degree, in the existing vacuum pump system, a vacuum degree sensor is usually arranged in the cylinder to monitor the vacuum degree in the cylinder, the external atmospheric pressure is not usually measured accurately, the ratio of the negative pressure value in the cylinder to standard atmospheric pressure is usually adopted, but when a person drives the automobile to a high-altitude place or an extremely cold place, a hot place and the like, the local atmospheric pressure is changed due to the influence of altitude and temperature, so that the vacuum degree detection has errors, and the boosting effect is influenced, therefore, a safety control method of the vacuum pump is provided, System and new energy automobile.

Disclosure of Invention

The invention aims to provide a safety control method and a safety control system for a vacuum pump, which can accurately measure the vacuum degree to optimize the boosting effect, and a new energy automobile, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the safety control method of the vacuum pump comprises the following steps:

s1, detecting negative pressure in a cylinder by installing a vacuum degree sensor in the cylinder to obtain a numerical value a;

s2, detecting the air pressure outside the cylinder for multiple times through an air pressure detection mechanism designed outside the cylinder, and obtaining numerical values b1, b2 and b 3;

s3, comparing the value a obtained in S1 and S2 with b1, b2 and b3 in sequence to obtain the vacuum degrees c1, c2 and c3, and taking the average value c of the vacuum degrees, wherein if the vacuum degree c is within a set value, the vacuum pump does not need to be adjusted, if the vacuum degree value is larger, the negative pressure in the vacuum pump needs to be adjusted to be lower, and otherwise, the negative pressure is adjusted to be higher.

Preferably, step S2 the atmospheric pressure detection mechanism include the electron barometer, the electron barometer sense terminal is connected with deposits the gas shell, just it is fixed with the connecting pipe to deposit the gas shell outer end, install adjusting part in the connecting pipe, just connecting pipe outer end intercommunication has T type pipe, T type intraductal vortex subassembly of installing, just T type pipe outer end is fixed with the sense tube, install the determine module in the sense tube, the sense tube tail end is fixed with driving motor, and the driving motor output is fixed with the lead screw through the shaft coupling, a plurality of backup pads are installed in the rotation of lead screw outer end.

Preferably, the adjusting component comprises a prismatic tube, a connecting ring is fixed at the outer end of the prismatic tube, a connecting rod is fixed at the outer end of the connecting ring through a Y-shaped frame, a sealing ball is fixed at the outer end of the connecting rod, a sealing ring matched with the sealing ball is fixed at the outlet of the air storage shell, a plurality of sealing elements are fixed on the outer side of the connecting ring at equal angles, a plurality of air outlets are arranged at the positions of the outer side of the connecting pipe corresponding to the plurality of sealing elements, a limiting sleeve matched with the outer side of the prismatic pipe is fixed at the outer side of the connecting pipe, an air inlet sleeve which is connected with the inner wall of the T-shaped pipe in a sliding way is fixed at the outer side of the prismatic pipe, an installation plate is fixed at the outer side of the prismatic pipe, an electric push rod which is fixed with the installation plate is fixed at the outer side of the connecting pipe, the gas storage shell is opened and closed through the adjusting assembly, so that the electronic gas pressure meter can collect gas more conveniently.

Preferably, the sealing element comprises a telescopic rod fixed on the outer side of the connecting ring, a sealing bulge matched with the gas outlet is fixed at the outer end of the telescopic rod, a pushing spring is sleeved on the outer side of the telescopic rod, the gas outlet is sealed through the sealing element, and the gas collection efficiency is improved.

Preferably, the vortex subassembly is including the cover the vortex cover in the lead screw outside, the vortex cover outside is fixed with a plurality of spoilers with angle such as, just the vortex cover outside rotate install a plurality ofly with the support frame that T type pipe inner wall is fixed, the mounting panel outside is fixed with the mounting bracket that slides and run through the air inlet cover, just the mounting bracket outer end is fixed with the steering part, realizes inhaling gaseous through the vortex subassembly to make things convenient for the collection of electron barometer to gas.

Preferably, the steering part is including fixing the supporting shoe of T type pipe inner wall, rotate through the bearing in the supporting shoe and install the linkage post, just it has the prism pole to slide the grafting in the linkage post, the linkage post with the vortex cover outside is fixed with intermeshing's linkage gear, the lead screw outer end with the prism pole outside is fixed with the drive gear of mutual adaptation, the prism pole outside is fixed with the drive gear, just the mounting bracket outer end be fixed with drive gear with the steering gear of drive gear looks adaptation, realize the regulation that turns to the vortex cover through the steering part.

Preferably, the detection assembly comprises a movable plate sleeved outside the screw rod through threads, two track strips matched with the movable plate are fixed on the inner side of the detection tube, an arc detection block is fixed at the bottom of the movable plate, a plurality of air inlets are formed in the bottom of the detection tube, a plurality of supports matched with the air inlets are fixed on the inner side of the detection tube, detection rods are inserted in the supports in a sliding mode, detection protrusions matched with the arc detection block are fixed at the tops of the detection rods, sealing plates matched with the air inlets are fixed at the bottom ends of the detection rods, abutting springs abutted against the support and the detection protrusions are sleeved on the outer sides of the detection rods, and the detection assembly is designed to control gas flowing in different positions, so that external air pressure detection is more accurate.

Preferably, a filtering screen is fixed at one end of the detection pipe close to the T-shaped pipe, so that gas is filtered, and impurities are prevented from entering the detection pipe.

Preferably, the safety control system of the vacuum pump includes:

the vacuum degree sensor is used for detecting negative pressure in the cylinder;

the electronic barometer is used for detecting external air pressure;

and the control chip is connected with the vacuum degree sensor and the electronic barometer, collects the detected data of the vacuum degree sensor to calculate a ratio, and adjusts the size of the negative pressure in the vacuum pump by detecting the numerical value of the vacuum degree.

Preferably, the new energy automobile comprises a safety control system of the vacuum pump according to the claim.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the air pressure detection mechanism is arranged near the vacuum pump, the air pressure in the environment where the vehicle is located can be detected through the internally designed electric air pressure meter, meanwhile, the air pressure of a plurality of positions can be detected through the interaction of the designed detection assembly and the turbulence assembly, so that the detection result is more accurate, and the vacuum pump can be accurately adjusted by calculating the vacuum degree, so that the vacuum boosting effect is better.

Drawings

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

FIG. 2 is a partial cross-sectional structural schematic of the present invention;

FIG. 3 is a schematic view of a detecting assembly according to the present invention;

FIG. 4 is a schematic view of the position relationship between the detecting rod and the air inlet according to the present invention;

FIG. 5 is a schematic view of a spoiler assembly according to the present invention;

FIG. 6 is a schematic view of a connection structure of the spoiler and the spoiler according to the present invention;

FIG. 7 is a schematic view of the construction of the steering member of the present invention;

FIG. 8 is a schematic view of the adjusting assembly of the present invention;

FIG. 9 is a partial cross-sectional view of a ribbed tube and connecting ring according to the present invention.

In the figure: 1-an air pressure detection mechanism; 2-electronic barometer; 3-gas storage shell; 4-connecting pipe; 5-a regulating component; 6-T type pipe; 7-a flow disturbing component; 8-a detection tube; 9-a detection component; 10-a drive motor; 11-a screw rod; 12-a support plate; 13-a prismatic tube; 14-a connecting ring; 15-a connecting rod; 16-a sealing ball; 17-a sealing ring; 18-a seal; 19-air outlet; 20-a limiting sleeve; 21-an air inlet sleeve; 22-a mounting plate; 23-an electric push rod; 24-a telescopic rod; 25-sealing the protrusion; 26-pushing the spring tightly; 27-a flow-disturbing sleeve; 28-a spoiler; 29-a support frame; 30-a mounting frame; 31-a steering member; 32-a support block; 33-a linkage column; 34-prismatic rod; 35-a linkage gear; 36-a transmission gear; 37-driving gear; 38-a steering gear; 39-moving the plate; 40-track bar; 41-arc detection block; 42-an air inlet; 43-a scaffold; 44-a detection rod; 45-detecting the bump; 46-a sealing plate; 47-resisting the spring; 48-Filter mesh.

Detailed Description

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

Example 1

The safety control method of the vacuum pump comprises the following steps:

s2, detecting the air pressure outside the cylinder for multiple times through an air pressure detection mechanism 1 designed outside the cylinder, and obtaining numerical values b1, b2 and b 3;

It should be noted that: in the scheme, the external air pressure is measured for multiple times, multiple vacuum degrees are obtained, and whether the vacuum pump is in a normal value or not is judged through the average value of the vacuum degrees, so that the adjustment of the vacuum pump is more accurate.

In this embodiment, please refer to fig. 1 and 2, an air pressure detecting mechanism 1 in the drawings includes an electronic barometer 2, a detecting end of the electronic barometer 2 is connected with an air storage shell 3, an outer end of the air storage shell 3 is fixed with a connecting pipe 4, an adjusting component 5 is installed in the connecting pipe 4, an outer end of the connecting pipe 4 is communicated with a T-shaped pipe 6, a spoiler component 7 is installed in the T-shaped pipe 6, an outer end of the T-shaped pipe 6 is fixed with a detecting pipe 8, a detecting component 9 is installed in the detecting pipe 8, a driving motor 10 is fixed at a tail end of the detecting pipe 8, an output end of the driving motor 10 is fixed with a lead screw 11 through a coupler, and a plurality of supporting plates 12 are rotatably installed at an outer end of the lead screw 11;

it should be noted that: in the scheme, the type Y80M1-2 is preferably selected for the driving motor 10, a power supply interface of the motor is connected with a power supply system through a switch, a motor operation circuit is a normal and reverse rotation control program of a conventional motor, the circuit operates as the conventional circuit, circuits and control related in the scheme are the prior art, and redundant description is not repeated herein.

Referring to fig. 5 and 6, the adjusting assembly 5 shown in the figure includes a prismatic tube 13, a connection ring 14 is fixed at an outer end of the prismatic tube 13, a connection rod 15 is fixed at an outer end of the connection ring 14 through a Y-shaped frame, a sealing ball 16 is fixed at an outer end of the connection rod 15, a sealing ring 17 matched with the sealing ball 16 is fixed at an outlet of the air storage casing 3, a plurality of sealing members 18 are fixed at equal angles at an outer side of the connection ring 14, a plurality of air outlets 19 are formed at positions corresponding to the plurality of sealing members 18 at an outer side of the connection pipe 4, a position limiting sleeve 20 matched with the outer side of the prismatic tube 13 is fixed at the outer side of the connection pipe 4, an air inlet sleeve 21 slidably connected with an inner wall of the T-shaped pipe 6 is fixed at the outer end of the prismatic tube 13, a mounting plate 22 is fixed at an outer side of the prismatic tube 13, and an electric push rod 23 fixed with the mounting plate 22 is fixed at an outer side of the connection pipe 4.

It should be noted that the electric push rod 23 is telescopic to drive the prismatic tube 13 to move, so that the connection relationship between the sealing ball 16 and the sealing ring 17 is changed, and the gas storage shell 3 can be opened, closed and opened, so that the electronic barometer 2 can collect gas more conveniently, and the electric push rod 23 preferably selects an ANT-26 model.

Referring to fig. 5-7, the spoiler assembly 7 shown in the drawings includes a spoiler sleeve 27 sleeved outside the screw rod 11, a plurality of spoilers 28 are fixed on the outer side of the spoiler sleeve 27 at equal angles, a plurality of support frames 29 fixed with the inner wall of the T-shaped pipe 6 are rotatably installed on the outer side of the spoiler sleeve 27, an installation frame 30 slidably penetrating through the air inlet sleeve 21 is fixed on the outer side of the installation frame 22, and a steering member 31 is fixed on the outer end of the installation frame 30;

the steering part 31 comprises a supporting block 32 fixed on the inner wall of the T-shaped pipe 6, a linkage column 33 is rotatably installed in the supporting block 32 through a bearing, a prismatic rod 34 is inserted in the linkage column 33 in a sliding mode, linkage gears 35 meshed with each other are fixed on the outer sides of the linkage column 33 and the turbulence sleeve 27, transmission gears 36 matched with each other are fixed on the outer end of the screw rod 11 and the outer side of the prismatic rod 34, a driving gear 37 is fixed on the outer side of the prismatic rod 34, and a steering gear 38 matched with the driving gear 37 and the transmission gear 36 is fixed on the outer end of the mounting frame 30.

It should be noted that: through driving motor 10's rotation to drive the rotation of lead screw 11, the drive gear 36 intermeshing transmission in the deuterogamy lead screw 11 and the prismatic pole 34 outside, thereby drive linkage post 33 and rotate, make linkage gear 35 rotate, drive a plurality of spoilers 28 and rotate, realize the interior negative pressure attraction of T type pipe 6, thereby conveniently transmit gas to in the case of banking up gas 3, make the measurement of electron barometer 2 more accurate.

In addition, referring to fig. 3 and 4, the detecting assembly 9 shown in the figure includes a moving plate 39 sleeved outside the screw rod 11 in a threaded manner, two rail strips 40 adapted to the moving plate 39 are fixed inside the detecting tube 8, an arc-shaped detecting block 41 is fixed at the bottom of the moving plate 39, a plurality of air inlets 42 are formed at the bottom of the detecting tube 8, a plurality of brackets 43 adapted to the air inlets 42 are fixed inside the detecting tube 8, a detecting rod 44 is inserted into the brackets 43 in a sliding manner, a detecting protrusion 45 adapted to the arc-shaped detecting block 41 is fixed at the top of the detecting rod 44, a sealing plate 46 adapted to the air inlets 42 is fixed at the bottom of the detecting rod 44, and a biasing spring 47 abutting against the brackets 43 and the detecting protrusion 45 is sleeved outside the detecting rod 44.

Measuring the external air pressure for many times; firstly, the moving plate 39 is controlled to move by rotating the driving motor 10, and the arc-shaped detection block 41 at the bottom of the moving plate is abutted against the detection protrusion 45, so that the detection rod 44 moves downwards, the sealing plate 46 and the air inlet 42 are opened, meanwhile, negative pressure is generated by rotation of the spoiler 28, so that external air enters through the air inlet 42 and is transmitted into the air storage shell 3, detection is performed through the electronic barometer 2, the air can move towards the second air inlet 42 along with the movement of the arc-shaped detection block 41, at the moment, after the previous air inlet 42 leaves, the air can move through the steering piece 31, so that the spoiler 28 has no power source, and the next air inlet 42 is opened and then continues to rotate, so that the air in the second air inlet 42 can be collected, and the circulation can collect the air at a plurality of positions, and the detection of the external air pressure is more accurate.

In addition, a safety control system for a vacuum pump includes:

the electronic air pressure meter 2 is used for detecting external air pressure;

and the control chip is connected with the vacuum degree sensor and the electronic barometer 2, collects the detected data to calculate the ratio, and adjusts the size of the negative pressure in the vacuum pump by detecting the value of the vacuum degree.

A new energy automobile comprising the safety control system of the vacuum pump according to claim 9.

Example 2

Referring to fig. 5 and 6, in this embodiment, as further described in embodiment 1, the adjusting assembly 5 shown in the figure includes a prismatic tube 13, a connection ring 14 is fixed at an outer end of the prismatic tube 13, a connection rod 15 is fixed at an outer end of the connection ring 14 through a Y-shaped frame, a sealing ball 16 is fixed at an outer end of the connection rod 15, a sealing ring 17 adapted to the sealing ball 16 is fixed at an outlet of the air storage housing 3, a plurality of sealing members 18 are fixed at equal angles at an outer side of the connection ring 14, a plurality of air outlets 19 are formed at positions corresponding to the plurality of sealing members 18 at an outer side of the connection tube 4, a position limiting sleeve 20 adapted to the outer side of the prismatic tube 13 is fixed at an outer side of the connection tube 4, an air inlet sleeve 21 slidably connected to an inner wall of the T-shaped tube 6 is fixed at an outer end of the prismatic tube 13, a mounting plate 22 is fixed at an outer side of the prismatic tube 13, and an electric push rod 23 fixed to the mounting plate 22 is fixed at an outer side of the connection tube 4;

referring to fig. 8 and 9, the sealing element 18 shown in the drawings includes a telescopic rod 24 fixed outside the connecting ring 14, a sealing protrusion 25 fitted with the air outlet 19 is fixed at the outer end of the telescopic rod 24, and a pushing spring 26 is sleeved outside the telescopic rod 24.

In this embodiment, can realize blockking up and opening gas outlet 19 through the sealing member 18 of design, when the go-between 14 removes, can drive the returning of telescopic link 24 and contract, make sealed arch 25 break away from gas outlet 19, block up air storage shell 3 simultaneously, thereby make when spoiler 28 rotates, can play a radiating effect with the inspiratory gas outgoing of negative pressure, when reseing again, through the effect of pushing up spring 26, can make sealed arch 25 block up gas outlet 19, do not influence the gas collection of air storage shell 3.

Example 3

Referring to fig. 1 and 2, in the present embodiment, for further explanation of other embodiments, an air pressure detecting mechanism 1 in the drawings includes an electronic barometer 2, a detecting end of the electronic barometer 2 is connected with an air storage shell 3, an outer end of the air storage shell 3 is fixed with a connecting pipe 4, an adjusting component 5 is installed in the connecting pipe 4, an outer end of the connecting pipe 4 is communicated with a T-shaped pipe 6, a spoiler component 7 is installed in the T-shaped pipe 6, an outer end of the T-shaped pipe 6 is fixed with a detecting pipe 8, an inner end of the detecting pipe 8 is installed with a detecting component 9, a tail end of the detecting pipe 8 is fixed with a driving motor 10, an output end of the driving motor 10 is fixed with a screw rod 11 through a coupler, and an outer end of the screw rod 11 is rotatably installed with a plurality of supporting plates 12;

referring to fig. 3, a filter screen 48 is fixed to the end of the detecting tube 8 near the T-shaped tube 6.

It is worth further explaining that through the designed filtering screen 48, the impurities in the outside air can be prevented from flowing in, so that the subsequent gas collection is more stable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A safety control method for a vacuum pump, characterized in that; the method comprises the following steps:

s2, detecting the air pressure outside the cylinder for multiple times through an air pressure detection mechanism (1) designed outside the cylinder, and obtaining numerical values b1, b2 and b 3;

2. The safety control method of a vacuum pump according to claim 1, characterized in that: step S2 air pressure detection mechanism (1) include electron barometer (2), electron barometer (2) sense terminal is connected with and deposits gas shell (3), just it is fixed with connecting pipe (4) to deposit gas shell (3) outer end, install adjusting part (5) in connecting pipe (4), just connecting pipe (4) outer end intercommunication has T type pipe (6), install vortex subassembly (7) in T type pipe (6), just T type pipe (6) outer end is fixed with detecting tube (8), install detecting part (9) in detecting tube (8), detecting tube (8) tail end is fixed with driving motor (10), and driving motor (10) output is fixed with lead screw (11) through the shaft coupling, lead screw (11) outer end is rotated and is installed a plurality of backup pads (12).

3. The safety control method of a vacuum pump according to claim 2, characterized in that: the adjusting assembly (5) comprises a prismatic tube (13), the outer end of the prismatic tube (13) is fixed with a connecting ring (14), the outer end of the connecting ring (14) is fixed with a connecting rod (15) through a Y-shaped frame, the outer end of the connecting rod (15) is fixed with a sealing ball (16), the outlet of the gas storage shell (3) is fixed with a sealing ring (17) matched with the sealing ball (16), the outer side of the connecting ring (14) is fixed with a plurality of sealing elements (18) at equal angles, the outer side of the connecting pipe (4) is provided with a plurality of gas outlets (19) corresponding to the positions of the plurality of sealing elements (18), the outer side of the connecting pipe (4) is fixed with a limiting sleeve (20) matched with the outer side of the prismatic tube (13), the outer end of the prismatic tube (13) is fixed with a gas inlet sleeve (21) connected with the inner wall of the T-shaped tube (6) in a sliding manner, and the outer side of the prismatic tube (13) is fixed with a mounting plate (22), and an electric push rod (23) fixed with the mounting plate (22) is fixed on the outer side of the connecting pipe (4).

4. A safety control method of a vacuum pump according to claim 3, characterized in that: the sealing element (18) comprises a telescopic rod (24) fixed on the outer side of the connecting ring (14), a sealing bulge (25) matched with the air outlet (19) is fixed at the outer end of the telescopic rod (24), and a pushing spring (26) is sleeved on the outer side of the telescopic rod (24).

5. The safety control method of a vacuum pump according to claim 2, characterized in that: turbulence subassembly (7) is including the cover turbulent flow cover (27) in lead screw (11) outside, the angular fixation such as turbulent flow cover (27) outside has a plurality of spoilers (28), just turbulent flow cover (27) outside is rotated install a plurality ofly with support frame (29) that T type pipe (6) inner wall is fixed, mounting panel (22) outside is fixed with and slides and runs through mounting bracket (30) of air inlet cover (21), just mounting bracket (30) outer end is fixed with steering part (31).

6. The safety control method of a vacuum pump according to claim 5, characterized in that: the steering part (31) comprises a supporting block (32) fixed on the inner wall of the T-shaped pipe (6), a linkage column (33) is installed in the supporting block (32) through rotation of a bearing, a prismatic rod (34) is inserted in the linkage column (33) in a sliding mode, a linkage gear (35) meshed with each other is fixed on the outer side of the turbulence sleeve (27), a transmission gear (36) matched with each other is fixed on the outer end of the screw rod (11) and the outer side of the prismatic rod (34), a driving gear (37) is fixed on the outer side of the prismatic rod (34), and a steering gear (38) matched with the driving gear (37) and the transmission gear (36) is fixed on the outer end of the mounting frame (30).

7. The safety control method of a vacuum pump according to claim 2, characterized in that: the detection assembly (9) comprises a moving plate (39) which is sleeved outside the screw rod (11) in a threaded manner, two track strips (40) matched with the moving plate (39) are fixed on the inner side of the detection tube (8), an arc-shaped detection block (41) is fixed at the bottom of the moving plate (39), a plurality of air inlets (42) are formed at the bottom of the detection tube (8), and a plurality of brackets (43) matched with the air inlet (42) are fixed on the inner side of the detection pipe (8), a detection rod (44) is inserted in the support (43) in a sliding way, a detection bulge (45) matched with the arc-shaped detection block (41) is fixed at the top of the detection rod (44), and a sealing plate (46) matched with the air inlet (42) is fixed at the bottom end, and a tight-resisting spring (47) which is propped against the bracket (43) and the detection bulge (45) is sleeved on the outer side of the detection rod (44).

8. The safety control method of a vacuum pump according to claim 2, characterized in that: and a filtering screen (48) is fixed at one end of the detection pipe (8) close to the T-shaped pipe (6).

9. A safety control system for a vacuum pump, comprising:

the electronic barometer (2) is used for detecting external air pressure;

and the control chip is connected with the vacuum degree sensor and the electronic barometer (2), collects the detected data of the vacuum degree sensor to calculate a ratio, and adjusts the size of the negative pressure in the vacuum pump by detecting the numerical value of the vacuum degree.

10. A new energy automobile comprising the safety control system of the vacuum pump according to claim 9.