A kind of internal-suction type is without oily piston brake air pumpTechnical field
The present invention relates to brake air pump technical field, more particularly to a kind of internal-suction type without oily piston brake air pump.
Background technology
Oilless air compressor serves a vital effect in new energy vehicle drive power, and it typically is new energySource vehicle drive power vehicle provides pneumatic system, and the braking of new energy vehicle drive power vehicle is operated by pneumatic systemDevice.To set air cleaner in front of the suction end of head, centre passes through the structure of the gas handling system of current oilless air compressorBreathing manifold connection crankcase is directly entered gas with balance crankshaft case pressure, the air inlet of oilless air compressor by air cleanerCylinder, air inlet after filtering can effectively reduce the wear intensity of air compressor, extend its service life.But it is this enter it is depressedThe defects of certain be present in structure：Because the gas phenomenon of piston type air compressor in itself is obvious, certain shadow is produced to air inflowRing；Oilless air compressor does not have lubricating oil to cool down bearing, if not having airflow in crankcase again, inside crankcaseThe parts such as connecting rod, link pin and crankshaft bearing can due to high temperature service life reduction；Apply at present in new energy vehicle drive powerAir cleaner in vehicle oilless air compressor gas handling system typically uses cylindrical empty air filter, is installing this cylinderNeed to reserve larger service clearance during air cleaner, cause air compressor structure not compact, in new energy vehicle drive powerIt is inconvenient for use in the small size space of vehicle.
The content of the invention
It is an object of the invention to provide a kind of internal-suction type without oily piston brake air pump, to solve existing for above-mentioned prior artProblem, make equipment overall structure compact, volume reduces, weight, and energy consumption reduces.
To achieve the above object, the invention provides following scheme：
The present invention provides a kind of internal-suction type without oily piston brake air pump, including magneto, the magneto both sides knotStructure is identical, is mounted on supporting volute, is provided with clutch shaft bearing in the support volute, is provided with the clutch shaft bearing and instituteState the main shaft of magneto connection；Wind wheel is provided with the main shaft；End installation of the main shaft away from the magnetoThere is eccentric wheel, piston component is connected with the eccentric shaft of the eccentric wheel, the piston component both sides are separately installed with closed cylinderBody, described cylinder body one end are connected with cylinder cap, and the other end is connected with cylinder shell, and the cylinder shell coordinates with the support volute to be installed, instituteState and be provided with seal cover board on cylinder body, cylinder shell and support volute；The cylinder shell lower end offers inlet chamber.
Optionally, the piston component includes second bearing, connecting rod and the piston being sequentially connected, and the top land is hingedThere is the first reed；The piston component is provided with valve plate by the second bearing and the eccentric axis connection on the cylinder cap,The second reed is provided with the valve plate, exhaust outlet is offered in the cylinder cap side wall, between the exhaust outlet and the valve plateIt is provided with silencer cover.
Optionally, filter core is installed in the inlet chamber.
Optionally, motor radiating piece is installed, the motor radiating piece outer end is provided with blower cover on the magneto.
Optionally, the piston is barrel-shaped phenolic piston, the phenolic piston one end open, other end closing, instituteThe blind end for stating phenolic piston is provided with the first reed；The connecting rod stretches into through the phenolic piston openend, and with the treeFat piston inner wall is fixedly connected.
Optionally, the cylinder shell, the support volute and the seal cover board form volute storage wind chamber；Opened in the cylinder bodyProvided with heat dissipation cavity, the heat dissipation cavity stores wind chamber with the volute by air-vent and connected；The heat dissipation cavity is opened at the cylinder capProvided with exhaust outlet.
Optionally, end of the main shaft away from the magneto is located on the outside of the clutch shaft bearing；The eccentric wheelFor counterbalanced eccentric, the counterbalanced eccentric, which is screwed, is installed on end of the main shaft away from the magneto.
Optionally, the support volute bottom is provided with symmetrical hold-down support.
Optionally, the main shaft of the magneto both sides is integral type structure, is arranged in the rotor of the magneto,And synchronously rotated with the rotor.
Optionally, Cooling Holes are provided with the piston.
Internal-suction type provided by the invention compared with prior art, has following technique effect without oily piston brake air pump：
Internal-suction type provided by the invention is without oily piston brake air pump, by phenolic piston technology and cylinder inner bore surface self-lubricatingCoating technology is combined, by the application of air suction structure in cylinder body interlayer heat dissipation cavity passage and piston, effective control and reductionThe heat that piston and cylinder body are formed at work, piston is allowed to be achieved in cylinder body without being worked in the state of any lubricating oil,I.e. piston directly removes lubricating oil in compression process can prevent lubricating oil emulsion phenomenon completely.Do not have simultaneously in the compressed air of dischargeThere is mist of oil, it is more environmentally-friendly.
The most part material of complete machine uses aluminium alloy, and the application of permagnetic synchronous motor makes the volume of complete machine reduce, againLightweight is measured, reduces new-energy automobile energy consumption.
Wind wheel is installed on permanent magnet machine rotor output shaft main shaft, and wind wheel is arranged at both cylinder shell and support voluteThe volute formed after installation is coordinated to store wind intracavitary, motor, which rotates, just drives wind wheel to rotate, and wind wheel rotates just passes through branch by cooling windThe cooling air-vent suction volute supportted on volute stores wind intracavitary, and after being able to supercharging in volute, enters cylinder through cylinder body air-ventIn body heat dissipation cavity, discharged after the rear heat dissipation cavity for crossing cylinder cap.The application of this structure needs external independent cooling fan singleThe problem of power supply, eliminates, and is eliminated in control policy of driver and reduces control point.Thus the application of structure also makes foreverIt is more thorough that magneto is able to good radiating, the pressurized effect of volute storage wind chamber radiates by cylinder body and cylinder cap.
Internal-suction type intake method, air are formed after the filter core in inlet chamber into after with both cylinder body and cover plateAir inlet air storing cavity in, the air inlet of piston tip is crossed by piston cavity by piston glide downwards air, and push up and open piston topEnter after the reed at end in compression chamber, brake air pump completes suction condition.Then piston slides the reed of piston tip and closed upwardsClose, the reed top of valve plate upper end is opened in gas outlet of the air compression through valve plate, and air is crossed silencer cover intake and exhaust chamber and arranged by exhaust outletGo out.The application of this internal-suction type intake method enables the air convection circulation of air storing cavity, adds service life of a machine.The storage of big volumeAir cavity and lower air-breathing, the mode of upper exhaust also reduce gas and kick phenomenon.
The application of silencer cover is minimized the exhaust noise of compressor.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodimentThe accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present inventionExample, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawingsObtain other accompanying drawings；
Fig. 1 is internal-suction type of the present invention without oily piston brake air pump configuration schematic diagram；
Fig. 2 is internal-suction type of the present invention without oily piston brake air pump partial cross sectional views；
Fig. 3 is inventive piston internal structure schematic diagram；
Fig. 4 is valve board structure schematic diagram of the present invention；
Fig. 5 is main shaft of the present invention and eccentric wheel connection diagram；
Description of reference numerals：1 be magneto, 2 be blower cover, 3 be cylinder shell, 4 be support volute, 5 be cylinder body, 6 be intoAir cavity, 7 be cylinder cap, 8 be exhaust outlet, 9 be clutch shaft bearing, 10 be main shaft, 11 be wind wheel, 12 be eccentric wheel, 13 be second bearing,14 it is connecting rod, 15 be piston, 16 be valve plate, 17 be silencer cover, 18 be motor radiating piece, 19 be heat dissipation cavity, 20 is air-vent, 21For hold-down support；22 it is air inlet, 23 be piston pin hole, 24 be air vent, 25 be piston pin, 26 be Cooling Holes, 27 is valve plateSteam vent.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, completeSite preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based onEmbodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not madeEmbodiment, belong to the scope of protection of the invention.
It is an object of the invention to provide a kind of internal-suction type without oily piston brake air pump, to solve existing for above-mentioned prior artProblem, make equipment overall structure compact, volume reduces, weight, and energy consumption reduces.
The present invention provides a kind of internal-suction type without oily piston brake air pump, including magneto, the magneto both sides knotStructure is identical, is mounted on supporting volute, is provided with clutch shaft bearing in the support volute, is provided with the clutch shaft bearing and instituteState the main shaft of magneto connection；Wind wheel is provided with the main shaft；End installation of the main shaft away from the magnetoThere is eccentric wheel, piston component is connected with the eccentric shaft of the eccentric wheel, the piston component both sides are separately installed with closed cylinderBody, described cylinder body one end are connected with cylinder cap, and the other end is connected with cylinder shell, and the cylinder shell coordinates with the support volute to be installed, instituteState and be provided with seal cover board on cylinder body, cylinder shell and support volute；The cylinder shell lower end offers inlet chamber.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific realApplying mode, the present invention is further detailed explanation.
The present invention provides a kind of internal-suction type without oily piston brake air pump, as shown in figure 1, overall structure of the present invention is U-shaped,It is main to include magneto 1, and the blower cover 2 outside magneto 1, the structure positioned at the both ends of magneto 1 be identicalAnd it is symmetrical, respectively including cylinder shell 3, support volute 4 and cylinder body 5, and the inlet chamber 6 positioned at the front end of cylinder shell 3, the inlet chamber 6Opening is provided with filter core, and the front end of cylinder body 5 is connected with cylinder shell 3, and the rear end of cylinder body 5 is provided with cylinder cap 7, is provided with the side wall of cylinder cap 7Exhaust outlet 8.
As shown in Fig. 2 being provided with clutch shaft bearing 9 in support volute 4 of the present invention, it is provided with the clutch shaft bearing 9The main shaft 10 being connected with the magneto 1, the end of main shaft 10 pass the clutch shaft bearing 9；Set on the main shaft 10There is wind wheel 11；Wind wheel 11 is between magneto 1 and clutch shaft bearing 9；End away from the magneto 1 on the main shaft 10Portion is provided with eccentric wheel 12, and the eccentric wheel 12 is fixedly mounted on the end of main shaft 10 using screw；Set on the eccentric wheel 12There is an eccentric shaft, piston component, the piston component both sides are connected with by second bearing 13 on the eccentric shaft of the eccentric wheel 12Be separately installed with closed cylinder body 5, described one end of cylinder body 5 is connected with cylinder cap 7, and the other end is connected with cylinder shell 3, the cylinder shell 3 withThe support volute 4 coordinates installation, and seal cover board is provided with the cylinder body 5, cylinder shell 3 and support volute 4；The inlet chamber 6Positioned at the bottom of the front end of cylinder shell 3.
Specifically, the piston component in the present invention includes second bearing 13, connecting rod 14 and the piston 15 being sequentially connected, it is describedThe top of piston 15 is hinged with the first reed；The piston 15 is barrel-shaped phenolic piston, the phenolic piston one end open, separatelyOne end is closed, and first reed is located at the blind end of the phenolic piston；The connecting rod 14 is through the phenolic piston openendStretch into, and be fixedly connected with the phenolic piston inwall.The component of piston 15 passes through the second bearing 13 and the biasAxis connection, valve plate 16 is installed on the cylinder cap 7, the second reed is hinged with the valve plate 16, is opened up in the side wall of cylinder cap 7There is exhaust outlet 8, silencer cover 17 is provided between the exhaust outlet 8 and the valve plate 16.
Further, motor radiating piece 18 is installed, the outer end of motor radiating piece 18 is provided with the magneto 1Blower cover 2.The cylinder shell 3, the support volute 4 and the seal cover board form volute and store wind chamber；Offered in the cylinder body 5Heat dissipation cavity 19, the heat dissipation cavity 19 store wind chamber with the volute by air-vent 20 and connected；The heat dissipation cavity 19 is in the cylinder cap 7Place offers exhaust outlet 8.The eccentric wheel 12 is counterbalanced eccentric, the counterbalanced eccentric be screwed be installed on it is describedEnd of the main shaft 10 away from the magneto 1.Support volute 4 bottom is provided with symmetrical hold-down support 21.
It is further preferred that as shown in figure 3, the lower end of air inlet 22 of inventive piston 15 uses 30 degree of oblique angle designs, withThe glide downwards intake resistance of piston 15 is reduced, and increases air inducing area.The piston pin hole 23 of piston 15 and the air vent at 45 degree of angles24 and piston pin 25 in cavity use via design, form an interconnected cooling duct, air can be in the channelSelf-loopa, the temperature of bearing is reduced, improve the use environment of bearing, increase service life.Due to piston pin hole 23 and piston pin25 connecting portion wall ratios are thicker, and in the course of the work, the heat on the top of piston 15 is big for piston 15, and heat makes piston by conductionPin-and-hole 23 and the easy accumulation of heat of the connecting portion of piston pin 25, so the design of 4 Cooling Holes 26 of increase, piston 15 is in motion processAir can take away partial heat by Cooling Holes 26, conducted with reducing heat to piston pin 25, be further ensured that the use of bearingEnvironment.
As shown in figure 4, the valve plate steam vent 27 on valve plate 16 increases by 30 degree of oblique angle and arc groove design, air collection is reducedThe noise that poly- compression passes through steam vent.As shown in figure 5, main shaft 10 and the design of the attachment structure of eccentric wheel 12 are added pair using Symmetrical Circular ArcFlat-square tenon form is claimed to be connected, end face is fixed with two screws.To strengthen the anti-faint-hearted intensity adjustable that both combine, and realize radiallyEccentric flexible trace regulation, improves assembly precision.
In another embodiment, the main shaft 10 of the both sides of magneto 1 of the present invention uses integral structure, is arranged in instituteIn the rotor for stating magneto 1, and synchronously rotated with the rotor.I.e. described magneto 1 runs through the main shaft 10, and willThe main shaft 10 divides for symmetrical two parts.
Internal-suction type provided by the present invention is without oily piston brake air pump, compact overall structure, small volume.In use, permanent magnetismMotor 1 drives main shaft 10 to rotate, and the wind wheel 11 being fixed on main shaft 10 follows the synchronous axial system of main shaft 10, because wind wheel 11 is arranged atCylinder shell 3 and the volute for supporting both cooperations of volute 4 to be formed after installing store wind intracavitary, so the rotation of wind wheel 11 just passes through cooling windThe cooling air-vent suction volute on volute 4 is supported to store wind intracavitary, and after volute storage wind intracavitary is able to supercharging, through cylinder body 5Air-vent enter heat dissipation cavity 19 in, after by close to cylinder cap 7 heat dissipation cavity 19 after discharge.The application of this structure also makes Permanent Magnet and ElectricIt is more thorough that machine 1 is able to good radiating, the pressurized effect of volute storage wind chamber radiates by cylinder body 5 and cylinder cap 7.
While main shaft 10 rotates, counterbalanced eccentric is driven to rotate, the eccentric shaft on counterbalanced eccentric passes through second bearing13 are connected with the connecting rod 14 of piston component, so as to which connecting rod 14 follows counterbalanced eccentric to move, and it is descending with piston 15, now,Air is after the filter core in inlet chamber 6, in the air inlet air storing cavity formed into after with both cylinder body 5 and cover plate, by piston15 glide downwards air cross the air inlet on the top of piston 15 by the inner chamber of piston 15, and enter after pushing up the reed for opening the top of piston 15In compression chamber, brake air pump completes suction condition.Then connecting rod 14 promotes piston 15 to slide upwards, and the reed on the top of piston 15 closesClose, the reed top of the upper end of valve plate 16 is opened in gas outlet of the air compression through valve plate 16, and air crosses the intake and exhaust chamber of silencer cover 17 by arrangingGas port 8 is discharged.
The use of filter core of the present invention ensure that the damage for into the gas free from admixture in air pump, avoiding air pump internal structureBad, silencer cover 17 can make the gas noise of discharge low；Motor radiating piece 18 is located at outside magneto 1, can be effectivelyMagneto 1 radiates.
This specification applies specific case and the principle and embodiment of the present invention is set forth, above exampleIllustrate to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according toAccording to the thought of the present invention, in specific embodiments and applications there will be changes.In summary, this specification contentIt should not be construed as limiting the invention.