CN111891087A

CN111891087A - A machine oil changes device for car maintenance

Info

Publication number: CN111891087A
Application number: CN202010839000.6A
Authority: CN
Inventors: 李东林
Original assignee: Jinhua Yangxue Automobile Technology Co ltd
Current assignee: Jinhua Yangxue Automobile Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2020-11-06

Abstract

The invention discloses an engine oil replacing device for automobile maintenance, which comprises a bottom body, a supporting body and a top body, wherein the supporting body is fixedly arranged on the top surface of the supporting body, the top body is fixedly arranged on the top surface of the supporting body, a new oil pan is fixedly arranged on the top surface of the top body, a new oil cavity which is communicated up and down is arranged in the new oil pan, a rotary chassis is rotatably arranged on the top surface of the bottom body, two bilaterally symmetrical bearing pans are fixedly arranged on the top surface of the rotary chassis, and oil receiving cavities which are communicated up and down are arranged in the bearing pans.

Description

A machine oil changes device for car maintenance

Technical Field

The invention relates to the technical field related to automobile maintenance, in particular to an engine oil replacing device for automobile maintenance.

Background

The automobile maintenance refers to a brand new process of maintaining and nursing the automobile by adopting special nursing materials and products with different properties according to the maintenance conditions required by different materials of each part of the automobile;

wherein, the change of automobile engine oil also is an important car maintenance engineering, and engine oil live time overlength can influence automobile engine's life, generally adopts artifical manual change, and is comparatively troublesome to, when changing engine oil, generally after abandonment engine oil is put away, can directly add new engine oil, still have a large amount of impurity in the machine oil case, in addition, add engine oil and add too much or too little very easily, thereby lead to engine trouble.

Disclosure of Invention

The invention aims to provide an engine oil replacing device for automobile maintenance, which is used for overcoming the defects in the prior art.

The engine oil replacing device for automobile maintenance comprises a bottom body, a supporting body and a top body, wherein the supporting body is fixedly arranged on the top surface of the supporting body, the top body is fixedly arranged on the top surface of the supporting body, a new oil pan is fixedly arranged on the top surface of the top body, a new oil cavity which is communicated up and down is arranged in the new oil pan, a rotating chassis is rotatably arranged on the top surface of the bottom body, two bilaterally symmetrical receiving disks are fixedly arranged on the top surface of the rotating chassis, oil receiving cavities which are communicated up and down are respectively arranged in the receiving disks, an oil replacing mechanism which can receive waste engine oil and can regulate and control to flush and flow new engine oil into an automobile is arranged among the bottom body, the supporting body and the top body, the oil replacing mechanism comprises an oil adding pipe fixedly arranged on the bottom surface of the top body, an oil adding head is fixedly arranged on the bottom surface of the oil adding pipe, and the oil adding pipe and the oil adding head can extend into an engine oil tank of the automobile, a through cavity is formed in the top body and is communicated with the new oil cavity, the through cavity is communicated with the oil adding pipe, a moving cavity is formed in the left side of the through cavity in a communicated manner, a moving block is arranged on the inner wall of the moving cavity in a sliding manner and can extend into the through cavity to seal the through cavity, an annular cavity is formed in the rotating chassis, a limiting block is fixedly arranged on the top surface of the bottom body and extends into the annular cavity, the height of the limiting block is lower than that of the rotating chassis connecting wall body positioned in the annular cavity, the annular cavity is communicated with the oil receiving cavity, a discharge pipe is fixedly embedded in the bottom body and is communicated with the annular cavity, two bilaterally symmetrical sliding cavities are communicated and arranged on the side of the annular cavity close to the rotating chassis, sliding plates capable of sealing the annular cavity are arranged in the sliding cavities in a sliding manner, and a guide cavity is formed in, the delivery pipe extension stretches into in the direction intracavity, and its left surface rotates and is equipped with the return bend, the return bend with the delivery pipe intercommunication, it is equipped with the swivel housing to rotate on the right wall in direction chamber, the return bend sets firmly in the swivel housing, the filter chamber has been seted up in the supporter, the inner wall of filter chamber has set firmly the filter sieve, the top is internal and be equipped with on adding oil pipe's the periphery and can control when letting in standard machine oil volume to the car machine oil tank in, response mechanism is including setting firmly the support ring on adding oil pipe periphery, be equipped with the elasticity chamber of opening towards the external world in the support ring, the inner wall of elasticity chamber slides from top to bottom and is equipped with the kicking block, the top surface of kicking block sets firmly two bilateral symmetry's ejector pin, the left and right sides that leads to the chamber is equipped with two bilateral symmetry's rotatory chamber, it is equipped with the rotation axis to rotate between, the periphery of rotation axis has set firmly the closed piece, two the closed piece can seal lead to the chamber, seted up the cavity in the closed piece, the ejector pin upwards extends the part and stretches into rotatory intracavity, and with the closed piece is in articulated in the cavity, the ejector pin the support ring with the floating block homoenergetic stretches into in the car oil tank.

Further technical scheme, the storage chamber has been seted up to the downside in direction chamber, the direction chamber with fixed mounting has downside linker between the storage chamber, the return bend can with downside linker intercommunication, the left side intercommunication in storage chamber is installed the blow-off valve that can communicate with the external world, the slide with fixed mounting has expanding spring between the inner wall in slip chamber, is located the right side connect and can adorn waste machine oil in the oil pocket, be located the left side connect and can adorn new machine oil in the oil pocket.

The technical scheme is that an electric appliance cavity is formed in a supporting body, a circulating pump and a motor are fixedly mounted on the bottom wall of the electric appliance cavity, the circulating pump is located on the left side of the motor, a communicating pipe is mounted on the bottom surface of the circulating pump in a communicating mode, the communicating pipe is communicated with a filter cavity, a straight pipe is mounted on the lower side of the filter cavity in a communicating mode, an upper communicating device is fixedly embedded in the inner wall of the upper side of a guide cavity, the upper communicating device is communicated with the straight pipe, a bent pipe can be communicated with the upper communicating device, a circulating pipe is mounted on the top surface of the circulating pump in a communicating mode, a supporting block is fixedly arranged on the top surface of a top body, an upward extending part of the circulating pipe penetrates through the inner walls of the top body and the supporting block and extends into the new oil cavity, worms are dynamically connected, the upward extending part of the worm on the upper side extends into the top worm wheel cavity and is rotationally connected with the top wall of the top worm wheel cavity, the right wall of the top worm wheel cavity is rotationally provided with a screw rod, the periphery of the screw rod is fixedly provided with a top worm wheel, the top worm wheel is meshed with the top worm wheel cavity on the upper side, the moving block is internally provided with a threaded cavity with a leftward opening, the rightward extending part of the screw rod extends into the moving cavity and the threaded cavity and is in threaded connection with the inner wall of the threaded cavity, the bottom worm wheel cavity and a gear cavity are arranged in the bottom body, the bottom worm wheel cavity is arranged on the right side of the guide cavity, the gear cavity is arranged on the right side of the bottom worm wheel cavity, the left wall of the gear cavity is rotationally provided with a transverse shaft, the leftward extending part of the transverse shaft penetrates through the bottom worm wheel cavity and extends into the guide cavity, and a rotary gear is fixedly arranged on the, the periphery of the rotating sleeve is fixedly provided with a power gear, the power gear is meshed with the rotating gear, a bottom worm wheel is fixedly arranged on the periphery of the transverse shaft in the bottom worm wheel cavity, the worm extending part extends into the bottom worm wheel cavity and is rotatably connected with the bottom wall of the bottom worm wheel cavity, the bottom worm wheel is meshed with the worm in the lower side, a driven bevel gear is fixedly arranged on the right side face of the transverse shaft, a fixing shaft is fixedly arranged on the bottom face of the rotating chassis, the downward extending part of the fixing shaft extends into the gear cavity, a transmission bevel gear is fixedly arranged on the bottom face of the rotating chassis, and the transmission bevel gear is meshed with the driven bevel gear.

According to the further technical scheme, a sealing sleeve is fixedly arranged on the periphery of the ejector rod and fixedly connected with the bottom surface of the top body, and a return spring is fixedly arranged between the top surface of the floating block and the top wall of the elastic cavity.

According to a further technical scheme, four universal wheels distributed in an array are fixedly mounted on the bottom surface of the bottom body.

The invention has the beneficial effects that: the invention not only can collect the waste engine oil discharged from the automobile conveniently, but also can lead the new engine oil to be capable of circularly flushing the automobile engine oil tank firstly when the new engine oil is added, thereby greatly improving the efficiency of removing impurities in the engine oil tank, greatly protecting the safety performance of the automobile engine, and simultaneously preventing the fault problem of damaging the engine caused by too much or too little engine oil addition when the engine oil is added after the circulation flushing of the engine oil is stopped.

Drawings

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

FIG. 2 is a sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged schematic view of the invention at B of FIG. 1;

fig. 4 is an enlarged schematic view at C of fig. 1 of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: 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.

Referring to fig. 1 to 4, an oil changing device for vehicle maintenance according to an embodiment of the present invention includes a bottom body 62, a supporting body 23, and a top body 20, wherein the supporting body 23 is fixedly disposed on a top surface of the supporting body 23, the top body 20 is fixedly disposed on a top surface of the supporting body 23, a fresh oil pan 15 is fixedly disposed on a top surface of the top body 20, a fresh oil chamber 16 is disposed in the fresh oil pan 15 and penetrates up and down, a rotating chassis 43 is rotatably disposed on a top surface of the bottom body 62, two bilaterally symmetric receiving pans 44 are fixedly disposed on a top surface of the rotating chassis 43, an oil receiving chamber 45 is disposed in each receiving pan 44 and penetrates up and down, an oil changing mechanism 101 capable of receiving waste oil and adjustably controlling to flush and flow fresh oil into a vehicle is disposed between the bottom body 62, the supporting body 23, and the top body 20, the oil changing mechanism 101 includes an oil adding pipe 59 fixedly disposed on a bottom surface of the top body 20, the bottom surface that adds oil pipe 59 has set firmly and has added oil head 60, add oil pipe 59 with add oil head 60 and can stretch into in the automobile engine oil tank, logical chamber 18 has been seted up in the top body 20, lead to chamber 18 with new oil pocket 16 intercommunication, lead to chamber 18 with add oil pipe 59 can communicate, the left side intercommunication that leads to chamber 18 is equipped with removes chamber 14, the inner wall slip that removes chamber 14 is equipped with movable block 19, movable block 19 can stretch into seal in leading to chamber 18 lead to chamber 18, it has set up annular chamber 46 in the rotatory chassis 43, the top surface of bottom body 62 has set firmly and has restricted block 47, stretch into in the annular chamber 46, just restricted block 47 highly be less than and be located in the annular chamber 46 rotatory chassis 43 connects the wall body, annular chamber 46 intercommunication connect 45, the solid has inlayed discharge pipe 38 in the bottom body 62, discharge pipe 38 with annular chamber 46 communicates, the annular cavity 46 is close to the sliding cavity 49 that the intercommunication of rotatory chassis 43 side was equipped with two bilateral symmetry, it can seal to slide to be equipped with in the sliding cavity 49 the slide plate 48 of annular cavity 46, the direction chamber 64 has been seted up in the bottom body 62, discharge pipe 38 extension stretches into in the direction chamber 64, and its left surface rotates and is equipped with the return bend 66, return bend 66 with discharge pipe 38 intercommunication, it is equipped with swivel housing 69 to rotate on the right wall of direction chamber 64, the return bend 66 sets firmly in swivel housing 69, set up filter chamber 29 in the supporter 23, filter chamber 29's inner wall has set firmly filter sieve 30, be equipped with in the top body 20 and on adding the periphery of oil pipe 59 can be when letting in standard engine oil volume to the car oil tank, control mechanism 102 is including setting firmly add the support ring 56 in the oil pipe 59 periphery, be equipped with opening elastic cavity 61 towards the external world in the support ring 56, the inner wall of elastic cavity 61 slides from top to bottom and is equipped with the floating block 58, the top surface of floating block 58 has set firmly two bilateral symmetry's ejector pin 55, the left and right sides that leads to chamber 18 is equipped with two bilateral symmetry's rotatory chamber 51, it is equipped with rotation axis 52 to rotate between the front and back wall of rotatory chamber 51, closed block 70 has set firmly on the periphery of rotation axis 52, two closed block 70 can seal lead to chamber 18, cavity 53 has been seted up in the closed block 70, ejector pin 55 upwards extends the part and stretches into in the rotatory chamber 51, and with closed block 70 is in articulated in the cavity 53, ejector pin 55 support ring 56 with the floating block 58 homoenergetic stretches into in the car oil tank.

In addition, in an embodiment, storage chamber 33 has been seted up to the downside of direction chamber 64, direction chamber 64 with fixed mounting has downside linker 65 between the storage chamber 33, return bend 66 can with downside linker 65 intercommunication, the bleeder valve 32 that can communicate with the external world is installed to the left side intercommunication of storage chamber 33, slide 48 with fixed mounting has expanding spring 50 between the inner wall of sliding chamber 49, is located the right side receive interior ability dress abandonment machine oil of oil pocket 45, is located the left side receive interior ability dress new machine oil of oil pocket 45, when being located the right side when accepting dish 44 is located the right side, and open the automobile oil tank bottom and discharge when covering the oil drain, through restriction piece 47 can make and be located the right side slide 48 is in the open mode, at this moment, is located the right side receive oil pocket 45 annular chamber 46 with discharge pipe 38 is in the connected mode to can make waste machine oil through being located the right side receive oil pocket 45, The annular chamber 46 and the discharge pipe 38 flow into the elbow 66, and the elbow 66 opens downward and communicates with the lower communication device 65, so that the waste engine oil can enter the storage chamber 33 for storage, and can be discharged through the discharge valve 32, thereby achieving the effect of discharging the waste engine oil.

In addition, in an embodiment, an electrical appliance cavity 26 is formed in the supporting body 23, a circulating pump 27 and a motor 25 are fixedly installed on the bottom wall of the electrical appliance cavity 26, the circulating pump 27 is located on the left side of the motor 25, a communicating pipe 28 is installed on the bottom surface of the circulating pump 27 in a communicating manner, the communicating pipe 28 is communicated with the filtering cavity 29, a straight pipe 31 is installed on the lower side of the filtering cavity 29 in a communicating manner, an upper communicating device 63 is fixedly embedded in the upper inner wall of the guide cavity 64, the upper communicating device 63 is installed in a communicating manner with the straight pipe 31, an elbow 66 can be communicated with the upper communicating device 63, a circulating pipe 11 is installed on the top surface of the circulating pump 27 in a communicating manner, a supporting block 12 is fixedly installed on the top surface of the top body 20, the upward extending part of the circulating pipe 11 penetrates through the inner walls of the top body 20 and the supporting block 12 and extends into, a top worm wheel cavity 21 is formed in the top body 20, an upward extending portion of the worm 24 located on the upper side extends into the top worm wheel cavity 21 and is rotatably connected with the top wall of the top worm wheel cavity 21, a screw 13 is rotatably arranged on the right wall of the top worm wheel cavity 21, a top worm wheel 22 is fixedly arranged on the periphery of the screw 13, the top worm wheel 22 is meshed with the top worm wheel cavity 21 located on the upper side, a threaded cavity 17 with a leftward opening is formed in the moving block 19, a rightward extending portion of the screw 13 extends into the moving cavity 14 and the threaded cavity 17 and is in threaded connection with the inner wall of the threaded cavity 17, a bottom worm wheel cavity 35 and a gear cavity 40 are formed in the bottom body 62, the bottom worm wheel cavity 35 is located on the right side of the guide cavity 64, the gear cavity 40 is located on the right side of the bottom worm wheel cavity 35, a transverse shaft 37 is rotatably arranged on the left wall of the gear cavity 40, the left extending part of the cross shaft 37 penetrates through the bottom worm wheel cavity 35 and extends into the guide cavity 64, a rotating gear 67 is fixedly arranged on the left side surface of the cross shaft, a power gear 68 is fixedly arranged on the outer periphery of the rotating sleeve 69, the power gear 68 is meshed with the rotating gear 67, a bottom worm wheel 36 is fixedly arranged on the outer periphery of the cross shaft 37 positioned in the bottom worm wheel cavity 35, the extending part of the worm 24 positioned at the lower side extends into the bottom worm wheel cavity 35 and is rotatably connected with the bottom wall of the bottom worm wheel cavity 35, the bottom worm wheel 36 is meshed with the worm 24 positioned at the lower side, a driven bevel gear 39 is fixedly arranged on the right side surface of the cross shaft 37, a fixed shaft 42 is fixedly arranged on the bottom surface of the rotating chassis 43, the downward extending part of the fixed shaft 42 extends into the gear cavity 40, a transmission bevel gear 41 is fixedly arranged on the bottom surface of the rotating chassis 43, and the transmission bevel gear 41 is meshed with the driven bevel, when the waste engine oil in the automobile is discharged, the oil adding pipe 59, the floating block 58 and the support ring 56 are inserted into the automobile engine oil tank, the worm 24 can be driven by the operation of the motor 25 to rotate the screw 13, so that the moving block 19 can be opened, new engine oil is added into the new oil chamber 16 at the moment, the new engine oil can enter the automobile engine oil tank, meanwhile, the worm 24 can drive the cross shaft 37 to rotate, so that the cross shaft 37 drives the fixing shaft 42 to rotate, the rotating chassis 43 can rotate, the receiving disc 44 positioned on the left side can be rotated to the right side, the oil discharging cover at the bottom of the automobile engine oil tank is not closed, so that the new engine oil carrying impurities can be flushed into the oil receiving chamber 45, the new engine oil carrying the impurities can be introduced into the discharge pipe 38, and meanwhile, the cross shaft 37 rotates, so that the rotating sleeve 69 drives the bent pipe 66 to rotate, therefore, the bent pipe 66 and the upper side communicating vessel 63 can be communicated, and at this time, by the operation of the circulating pump 27, the new engine oil with impurities can be filtered by the filter sieve 30 and re-introduced into the new oil chamber 16 through the circulating pipe 11, and the circulation effect of the new engine oil can be achieved.

In addition, in one embodiment, a sealing sleeve 54 is fixedly arranged on the periphery of the ejector rod 55, the sealing sleeve 54 is fixedly connected with the bottom surface of the top body 20, a return spring 57 is fixedly arranged between the top surface of the floating block 58 and the top wall of the elastic cavity 61, after a new engine oil flushing cycle is completed, an oil discharge cover at the bottom of an automobile engine oil tank is closed, new engine oil can be filled in the engine oil tank, at the moment, when the engine oil is added to a standard line, the floating block 58 can drive the ejector rod 55 to ascend through buoyancy force, so that the sealing block 70 can rotate to seal the through cavity 18, the engine oil addition can be stopped, the problems of too little engine oil addition and too much engine oil addition are prevented, and at the moment, the moving block 19 can seal the through cavity 18 again through the reverse rotation of the motor 25.

In addition, in one embodiment, four universal wheels 34 are fixedly mounted on the bottom surface of the bottom body 62, and the bottom body 62 can be moved by the universal wheels 34, so that the applicability is improved.

In the initial state, the moving block 19 is in the closed state, the right slide plate 48 is in the open state, the floating block 58 is located at the bottom side in the elastic cavity 61, the closing block 70 is in the open state, and the elbow 66 is communicated with the lower communicator 65.

When the automobile engine oil drain device is used, when the right bearing disc 44 is positioned on the right side and the oil drain cover at the bottom of the automobile engine oil tank is opened for draining oil, the right sliding plate 48 can be in an open state through the limiting block 47, at the moment, the right oil cavity 45, the annular cavity 46 and the drain pipe 38 are in a communicated state, so that waste engine oil can flow into the elbow 66 through the right oil cavity 45, the annular cavity 46 and the drain pipe 38, the elbow 66 is downward opened and is communicated with the lower communicating vessel 65, the waste engine oil can enter the storage cavity 33 for storage, the waste engine oil can be discharged through the drain valve 32, the effect of discharging the waste engine oil is achieved, when the waste engine oil in the automobile is completely discharged, the oil pipe 59, the floating block 58 and the supporting ring 56 are firstly inserted into the automobile engine oil tank, the worm 24 electric screw 13 can be rotated through the operation of the motor 25, the moving block 19 can be opened, and new engine oil is added into the new oil, the new engine oil can enter the engine oil tank of the automobile, meanwhile, the worm 24 can enable the cross shaft 37 to rotate, so that the cross shaft 37 can drive the fixed shaft 42 to rotate, then the rotating chassis 43 can rotate, the bearing disc 44 positioned on the left side can rotate to the right side, because the oil discharge cover at the bottom of the engine oil tank of the automobile is not closed at the moment, the new engine oil carrying impurities can be flushed into the oil receiving cavity 45, the new engine oil carrying impurities can be introduced into the discharge pipe 38, meanwhile, the cross shaft 37 rotates, the rotating sleeve 69 can drive the bent pipe 66 to rotate, so that the bent pipe 66 is communicated with the upper side communicating device 63, at the moment, the new engine oil carrying impurities can be filtered through the filter sieve 30 by the operation of the circulating pump 27 and is introduced into the new oil cavity 16 again through the circulating pipe 11, the circulating effect of the new engine oil can be achieved, after the flushing circulation of the new engine oil is finished, the oil discharge cover at the bottom of the engine oil tank of the, at this time, when the oil is added to the standard line, the floating block 58 can drive the ejector rod 55 to ascend through buoyancy, so that the sealing block 70 can rotate to seal the through cavity 18, the oil adding can be stopped, the problem that the added oil is too little and too much is prevented, at this time, the moving block 19 can be enabled to seal the through cavity 18 again through the reverse rotation of the motor 25, the bottom body 62 can be moved through the universal wheel 34, and the applicability is improved.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.

Claims

1. The utility model provides an engine oil changes device for auto maintenance, includes the bottom body, supporter and top body, its characterized in that: the supporting body is fixedly arranged on the top surface of the supporting body, the top body is fixedly arranged on the top surface of the supporting body, a new oil tray is fixedly arranged on the top surface of the top body, a new oil cavity which is communicated up and down is arranged in the new oil tray, a rotary chassis is rotatably arranged on the top surface of the bottom body, two bilaterally symmetrical bearing trays are fixedly arranged on the top surface of the rotary chassis, oil receiving cavities which are communicated up and down are respectively arranged in the bearing trays, an oil changing mechanism which can receive waste engine oil and can regulate and control the flushing of the flowing new engine oil in the automobile is arranged between the bottom body, the supporting body and the top body, the oil changing mechanism comprises an oil adding pipe fixedly arranged on the bottom surface of the top body, an oil adding head is fixedly arranged on the bottom surface of the oil adding pipe, the oil adding pipe and the oil adding head can extend into an oil tank of the automobile, a through cavity is formed in the top body, and is communicated with the new oil, the through cavity can be communicated with the oil adding pipe, the left side of the through cavity is communicated with a moving cavity, the inner wall of the moving cavity is provided with a moving block in a sliding manner, the moving block can extend into the through cavity to seal the through cavity, the rotating chassis is internally provided with an annular cavity, the top surface of the bottom body is fixedly provided with a limiting block, the limiting block extends into the annular cavity, the height of the limiting block is lower than that of the rotating chassis connecting wall body positioned in the annular cavity, the annular cavity is communicated with the oil receiving cavity, the bottom body is internally and fixedly embedded with a discharge pipe, the discharge pipe is communicated with the annular cavity, the annular cavity is close to the rotating chassis side and is communicated with two bilaterally symmetrical sliding cavities, sliding plates capable of sealing the annular cavity are arranged in the sliding cavities in a sliding manner, the bottom body is internally provided with a guide cavity, a bent pipe is rotatably arranged on the left side surface of the rotary screen, the bent pipe is communicated with the discharge pipe, a rotary sleeve is rotatably arranged on the right wall of the guide cavity, the bent pipe is fixedly arranged in the rotary sleeve, a filter cavity is arranged in the support body, and a filter screen is fixedly arranged on the inner wall of the filter cavity; an induction mechanism which can control the stop of the adding of the engine oil when the standard engine oil amount is introduced into the engine oil tank of the automobile is arranged in the top part body and on the periphery of the oil adding pipe, the induction mechanism comprises a support ring fixedly arranged on the periphery of the oil adding pipe, an elastic cavity with an opening facing the outside is arranged in the support ring, the inner wall of the elastic cavity is provided with a floating block in a vertical sliding way, the top surface of the floating block is fixedly provided with two ejector rods which are symmetrical left and right, two bilaterally symmetrical rotating cavities are arranged on the left side and the right side of the through cavity, a rotating shaft is rotatably arranged between the front wall and the rear wall of the rotating cavity, the periphery of the rotating shaft is fixedly provided with sealing blocks, the two sealing blocks can seal the through cavity, a cavity is arranged in the closed block, the upward extending part of the mandril extends into the rotating cavity, and the ejector rod, the support ring and the floating block can all extend into an oil tank of the automobile.

2. An oil changing device for vehicle maintenance according to claim 1, wherein: the storage chamber has been seted up to the downside in direction chamber, the direction chamber with fixed mounting has the downside linker between the storage chamber, the return bend can with downside linker intercommunication, the blow-off valve that can communicate with the external world is installed to the left side intercommunication in storage chamber, the slide with fixed mounting has expanding spring between the inner wall in slip chamber, is located the right side connect and can adorn waste machine oil in the oil pocket, be located the left side connect and can adorn new machine oil in the oil pocket.

3. An oil replacing device for automobile maintenance according to claim 2, wherein: an electric appliance cavity is formed in the supporting body, a circulating pump and a motor are fixedly installed on the bottom wall of the electric appliance cavity, the circulating pump is located on the left side of the motor, a communicating pipe is installed on the bottom surface of the circulating pump in a communicating mode, the communicating pipe is communicated with the filter cavity, a straight pipe is installed on the lower side of the filter cavity in a communicating mode, an upper communicating device is fixedly embedded in the inner wall of the upper side of the guide cavity and is communicated with the straight pipe, the bent pipe can be communicated with the upper communicating device, a circulating pipe is installed on the top surface of the circulating pump in a communicating mode, a supporting block is fixedly installed on the top surface of the top body, an upward extending portion of the circulating pipe penetrates through the inner walls of the top body and the supporting block and extends into the new oil cavity, worms are dynamically connected on the upper side surface and the lower side surface of the motor, a top worm, the right wall of the top worm wheel cavity is rotatably provided with a screw rod, the periphery of the screw rod is fixedly provided with a top worm wheel, the top worm wheel is meshed with the top worm wheel cavity positioned at the upper side, the moving block is internally provided with a threaded cavity with a left opening, the right extending part of the screw rod extends into the moving cavity and the threaded cavity and is in threaded connection with the inner wall of the threaded cavity, the bottom body is internally provided with a bottom worm wheel cavity and a gear cavity, the bottom worm wheel cavity is positioned at the right side of the guide cavity, the gear cavity is positioned at the right side of the bottom worm wheel cavity, the left wall of the gear cavity is rotatably provided with a transverse shaft, the leftward extending part of the transverse shaft penetrates through the bottom worm wheel cavity and extends into the guide cavity, the left side surface of the transverse shaft is fixedly provided with a rotating gear, and the periphery of the rotating sleeve is fixedly provided with a power gear, the power gear is meshed with the rotating gear, a bottom worm wheel is fixedly arranged on the periphery of the cross shaft in the bottom worm wheel cavity, the worm extending part extends into the bottom worm wheel cavity and is rotatably connected with the bottom wall of the bottom worm wheel cavity, the bottom worm wheel is meshed with the worm on the lower side, a driven bevel gear is fixedly arranged on the right side face of the cross shaft, a fixed shaft is fixedly arranged on the bottom face of the rotating chassis, the downward extending part of the fixed shaft extends into the gear cavity, a transmission bevel gear is fixedly arranged on the bottom face of the rotating chassis, and the transmission bevel gear is meshed with the driven bevel gear.

4. An oil replacing device for automobile maintenance according to claim 3, wherein: and a sealing sleeve is fixedly arranged on the periphery of the ejector rod and fixedly connected with the bottom surface of the top body, and a return spring is fixedly arranged between the top surface of the floating block and the top wall of the elastic cavity.

5. An oil changing device for vehicle maintenance according to claim 4, wherein: the bottom surface of the bottom body is fixedly provided with four universal wheels distributed in an array manner.