CN106762597A - A kind of relay-type liquid automatic pressure pump for brake hydraulic system - Google Patents
A kind of relay-type liquid automatic pressure pump for brake hydraulic system Download PDFInfo
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- CN106762597A CN106762597A CN201611047247.4A CN201611047247A CN106762597A CN 106762597 A CN106762597 A CN 106762597A CN 201611047247 A CN201611047247 A CN 201611047247A CN 106762597 A CN106762597 A CN 106762597A
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- cylindrical cavity
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- piston tube
- check valve
- large diameter
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 18
- 239000003921 oil Substances 0.000 description 66
- 210000001161 mammalian embryo Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000004141 microcephaly Diseases 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000098674 Pinus cembroides Species 0.000 description 1
- 235000005013 Pinus cembroides Nutrition 0.000 description 1
- 235000008591 Pinus cembroides var edulis Nutrition 0.000 description 1
- 235000015593 Pinus monophylla Nutrition 0.000 description 1
- 235000015594 Pinus parryana Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/168—Arrangements for pressure supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
A kind of relay-type liquid automatic pressure pump for brake hydraulic system, the pump housing is provided with T-shaped cylindrical cavity, the path portion end surface of T-shaped cylindrical cavity offers oil outlet, T-shaped cylindrical cavity large diameter portion end face is provided with fuel feed hole and first row stomata, the T-shaped piston tube is arranged in T-shaped cylindrical cavity, the large diameter portion end face of T-shaped piston tube is logical hydraulic fluid port, the path portion end surface circle centre position of T-shaped piston tube offers oil leak hole, draining nonreturn valve core coordinates with oil leak hole, return spring is sleeved on the miner diameter end of T-shaped piston tube, draining push rod is flush-mounted on T-shaped piston tube axis, the import of the first check valve is connected with T-shaped cylindrical cavity large diameter portion, the outlet of the first check valve is connected by flexible pipe with the import of the second check valve, the outlet of the second check valve is connected with T-shaped cylindrical cavity large diameter portion.Simple structure of the present invention, reliability is high, improves the braking safety of vehicle, improves the service life of brake pump, is that enterprise improves economic benefit.
Description
Technical field
The present invention relates to mechanical field, specifically a kind of relay-type liquid automatic pressure pump for brake hydraulic system.
Background technology
Automobile brake system is also known as brake system of car.Brake system is acted on：Make the automobile in traveling according to driver
Requirement carry out forced deceleration even stop；Make the automobile of stagnation of movement (be included on ramp) stabilization under the conditions of different kinds of roads to stay
Car；The car speed of descent run is set to keep stabilization.
Major part compact car all uses hydraulic braking at present, because liquid can not be compressed, can almost 100%
Transmission power, general principle is that driver steps on brake pedal, and pressure is applied to the brake fluid in master cylinder, and liquid is by pressure
Be delivered on the wheelcylinder piston of each wheel brake clamp by pipeline, wheelcylinder piston driving brake clamp clamp brake disc so as to
Huge frictional force is produced to make vehicle deceleration.Brake system has used " Pascal's law ", according to static pressure fundamental equation (p=p0+
ρ gh), the liquid in closed container is contained in, its additional pressure p0When changing, as long as liquid still keeps the static of its original
State is constant, and the pressure of any point will occur an equal amount of change in liquid.It is exactly in simple terms that we step on braking and step on
The after-applied pressure onto master cylinder liquid of plate is equal to the liquid pressure at brake disc piston, but because pressure is equal to unit plane
Long-pending pressure, as long as so increasing the area of piston, the pressure of applying will increase.
Booster pump is therefore named to conceive the pump for being just mounted in and being pressurized on pipeline, is a kind of special appellation of numerous pump classes.Typically
Described blower pump for pipeline refers to being arranged on the pump that liquid is conveyed on pipeline, it is not limited to refer to a certain species or form
Pump, can be it is vertical can also be horizontal, such as vertical multi-stage centrifugal pump, horizontal multi-stage centrifugal pump, vertical single stage centrifugal pump, horizontal
Centrifugal pump of single stage type, self priming centrifugal pump etc. can be referred to as blower pump for pipeline.
Traditional brake hydraulic system include master cylinder and wheel cylinder, therebetween by brake hose connect, however, only according to
Ratio difference by the piston area between master cylinder and wheel cylinder can not obtain preferable brake callipers chucking power sometimes, accordingly, it would be desirable to
Increase a booster pump between master cylinder and wheel cylinder.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided a kind of relay-type liquid Automatic-boosting for brake hydraulic system
Pump, brake in wheel cylinder oil pressure to increase, and reaches the purpose that larger brake callipers chucking power is obtained with less pedal force.
To achieve these goals, present invention employs following technical scheme：
A kind of relay-type liquid automatic pressure pump for brake hydraulic system, including the pump housing, T-shaped piston tube, draining top
Bar, return spring, draining spring, draining nonreturn valve core, the first O-ring seal, the second O-ring seal, the first sealing screw,
One check valve, the second check valve and flexible pipe；
The pump housing is provided with T-shaped cylindrical cavity, and the path portion end surface of T-shaped cylindrical cavity offers oil outlet, T-shaped cylinder
Inner chamber large diameter portion end face is provided with fuel feed hole and first row stomata, and the first sealing screw is arranged in first row stomata,
The T-shaped piston tube is arranged in T-shaped cylindrical cavity, and the path part of T-shaped piston tube is small with T-shaped cylindrical cavity
Path portion coordinates, and the large diameter portion of T-shaped piston tube coordinates with the large diameter portion of T-shaped cylindrical cavity, the path part of T-shaped piston tube
Outer cylinder on the first O-ring seal is installed, the second O-shaped sealing is installed on the outer cylinder of the large diameter portion of T-shaped piston tube
Circle,
The large diameter portion end face of T-shaped piston tube is logical hydraulic fluid port, and the path portion end surface circle centre position of T-shaped piston tube is offered to be let out
Oilhole, draining nonreturn valve core is arranged in the path part of T-shaped cylindrical cavity and coordinates with oil leak hole, the connection of draining spring one end
On draining nonreturn valve core, the draining spring other end is connected to the path part inner face of T-shaped cylindrical cavity,
Return spring is sleeved on the miner diameter end of T-shaped piston tube and is located in the large diameter portion of T-shaped cylindrical cavity,
Draining push rod is flush-mounted on T-shaped piston tube axis and one end is fixed on T-shaped cylindrical cavity bigger diameter end,
The import of the first check valve is connected with T-shaped cylindrical cavity large diameter portion, the outlet of the first check valve by flexible pipe with
The import connection of the second check valve, the outlet of the second check valve is connected with T-shaped cylindrical cavity large diameter portion.
Further, the total length of T-shaped cylindrical cavity is more than the total length of T-shaped piston tube, the large-diameter portion of T-shaped cylindrical cavity
The length divided is less than the total length of T-shaped piston tube, the large-diameter portion of the large diameter portion length less than T-shaped cylindrical cavity of T-shaped piston tube
The length divided, total length of the draining push rod length more than T-shaped piston tube.
Further, the first check valve is adjustable pressure check valve.
Further, the concrete structure of the adjustable pressure check valve is as follows：
Including three-way pipe, the second sealing screw, cross valve body, nonreturn valve core, spring, pressure-adjusting screw, locking screw
Nail and end socket screw,
The connection end of the three-way pipe first connects with T-shaped cylindrical cavity large diameter portion, and the connection end of three-way pipe second is second
Steam vent, the second sealing screw is arranged in second row stomata, and the connection end of three-way pipe the 3rd is entered with the check valve of cross valve body
Mouth connection,
First pipe arm of the cross valve body is check valve inlet, and the second pipe arm is secondary oil pocket oil-out, the 3rd pipe arm
It is riffled tube, the 4th pipe arm is secondary oil pocket oil inlet, and the first pipe arm and the 3rd pipe arm are conllinear, and the second pipe arm and the 4th pipe arm are common
Line, in the first pipe arm and the 3rd pipe arm, nonreturn valve core, spring, pressure is followed successively by from check valve inlet toward the 3rd tube wall direction
Adjusting screw, lock-screw and end socket screw, the secondary oil pocket oil inlet of the 4th pipe arm are connected or by end cap seal with oil can,
The secondary oil pocket oil-out of the second pipe arm is connected with the oil inlet of the second check valve by flexible pipe.
Compared with prior art, the beneficial effect that the present invention possesses：
The present invention is simple and practical, and reliability is high, improves the braking safety of vehicle, improves the use of brake pump
In the life-span, be that enterprise improves economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of the relay-type liquid automatic pressure pump for brake hydraulic system described in embodiment 1.
Fig. 2 is the structural representation of the relay-type liquid automatic pressure pump for brake hydraulic system described in embodiment 2.
Specific embodiment
Technical scheme is further elaborated below by embodiment.
Embodiment 1
A kind of relay-type liquid automatic pressure pump for brake hydraulic system, including the pump housing 1, T-shaped piston tube 2, draining
Push rod 3, return spring 4, draining spring 5, draining nonreturn valve core 6, the first O-ring seal 7, the second O-ring seal 8, first are close
Envelope screw 10, the first check valve, the second check valve 20 and flexible pipe 27；
The pump housing 1 is provided with T-shaped cylindrical cavity, and the path portion end surface of T-shaped cylindrical cavity offers oil outlet, T-shaped circle
Post inner chamber large diameter portion end face is provided with fuel feed hole 13 and first row stomata 14, and the first sealing screw 10 is arranged on first row stomata 14
In,
The T-shaped piston tube 2 is arranged in T-shaped cylindrical cavity, path part and the T-shaped cylindrical cavity of T-shaped piston tube 2
Minor diameter part distribution is closed, and the large diameter portion of T-shaped piston tube 2 coordinates with the large diameter portion of T-shaped cylindrical cavity, the path of T-shaped piston tube 2
First O-ring seal 7 is installed on partial outer cylinder, the 2nd O is installed on the outer cylinder of the large diameter portion of T-shaped piston tube 2
Type sealing ring 8,
The large diameter portion end face of T-shaped piston tube 2 is logical hydraulic fluid port 16, and the path portion end surface circle centre position of T-shaped piston tube 2 is opened up
There is oil leak hole 15, draining nonreturn valve core 6 is arranged in the path part of T-shaped cylindrical cavity and coordinates with oil leak hole 15, draining bullet
The one end of spring 5 is connected on draining nonreturn valve core 6, and the other end of draining spring 5 is connected to the path portion inner end of T-shaped cylindrical cavity
Face,
Return spring 4 is sleeved on the miner diameter end of T-shaped piston tube 2 and is located in the large diameter portion of T-shaped cylindrical cavity,
Draining push rod 3 is flush-mounted on the axis of T-shaped piston tube 2 and one end is fixed on T-shaped cylindrical cavity bigger diameter end,
The import of the first check valve 18 is connected with T-shaped cylindrical cavity large diameter portion, and the outlet of the first check valve 18 is by soft
Pipe 27 is connected with the import 20a of the second check valve 20, and outlet 20b and the T-shaped cylindrical cavity large diameter portion of the second check valve 20 connect
Connect.
Further, the total length of T-shaped cylindrical cavity is more than the total length of T-shaped piston tube 2, the big footpath of T-shaped cylindrical cavity
Partial length is less than the total length of T-shaped piston tube 2, and the large diameter portion length of T-shaped piston tube 2 is big less than T-shaped cylindrical cavity
The length of path portion, total length of the draining push rod length more than T-shaped piston tube 2.
Further, the first check valve 18 is adjustable pressure check valve.
Further, the concrete structure of the adjustable pressure check valve is as follows：
Including three-way pipe 9, the second sealing screw 11, cross valve body 19, nonreturn valve core 22, spring 23, pressure adjustment spiral shell
Nail 24, lock-screw 25 and end socket screw 26,
The connection end 9a of the three-way pipe 9 first is connected with T-shaped cylindrical cavity large diameter portion, the connection end 9b of three-way pipe 9 second
It is second row stomata, the second sealing screw 11 is arranged in second row stomata, the connection end 9c of three-way pipe 9 the 3rd and cross valve body
19 check valve inlet connection,
First pipe arm 19a of the cross valve body 19 is check valve inlet, and the second pipe arm 19b is secondary oil pocket oil-out,
3rd pipe arm 19c is riffled tube, and the 4th pipe arm 19d is secondary oil pocket oil inlet, and the first pipe arm 19a and the 3rd pipe arm 19c is conllinear,
Second pipe arm 19b and the 4th pipe arm 19d is conllinear, in the first pipe arm 19a and the 3rd pipe arm 19c, from check valve inlet toward the 3rd
Tube wall 19c directions are followed successively by nonreturn valve core 22, spring 23, pressure-adjusting screw 24, lock-screw 25 and end socket screw 26, the
The secondary oil pocket oil inlet of four pipe arm 19d is connected or by end cap seal, the secondary oil pocket oil-out of the second pipe arm 19b and with oil can
The oil inlet 20a of two check valves 20 is connected by flexible pipe 27.
Embodiment 2
Process for convenience and install, the present embodiment processes the large diameter portion of valve body and path part respectively.
(1) two solid embryo materials of cylindricality are selected, is then dug out one of embryo material from one end using lathe cylindrical big
Footpath inner chamber, and keep the other end not to be pierced as bigger diameter end lid, burn-ons first flange in the openend of cylindrical big footpath inner chamber,
Then covered in bigger diameter end with drilling machine and produce first row stomata and fuel feed hole, and from the openend of cylindrical big footpath inner chamber big
Footpath end cap circle centre position gets out blind screw hole, the external screw thread of the one end of draining push rod 3 is screwed into blind screw hole, then use tapping machine
Internal thread is stamped to first row stomata, and the first sealing screw 10 is installed into first row stomata.By another embryo material profit
Path inner chamber is dug out with lathe, and keeps the other end not to be pierced as path end cap, covered in miner diameter end and get out hydraulic fluid port, small
The openend of footpath inner chamber is burn-on second flange.
(2) profile of T-shaped piston tube 2 is T-shaped, first is installed on the outer cylinder of the path part of T-shaped piston tube 2 O-shaped
Sealing ring 7, the second O-ring seal 8 is installed in the outer cylinder of the large diameter portion of T-shaped piston tube 2, and the first O-ring seal 7 is compacted
Between the outer cylinder of T-shaped cylindrical cavity path part internal face and the path part of T-shaped piston tube 2, the second O-ring seal 8
It is pressed between the outer cylinder of the large diameter portion of T-shaped cylindrical cavity large diameter portion internal face and T-shaped piston tube 2 so that oil is not
The first O-ring seal 7 and the second O-ring seal 8 can be passed through.
The inner chamber of T-shaped piston tube 2 is axially straight-through cylinder, and the large diameter portion end face of T-shaped piston tube 2 is in cylinder
Chamber opening, the path portion end surface of T-shaped piston tube 2 is provided with the end cap integrated with tube wall, and oil leak hole is drilled with end cap circle centre position.
The large diameter portion of T-shaped piston tube 2 is embedded in into T-shaped cylindrical cavity large diameter portion from the openend of big footpath inner chamber, is made
Draining push rod 3, oil leak hole, draining inner elements of check valve and draining spring 5 is obtained to be located on same axis.Again by 4 sets of return spring
Mounted in the path part of T-shaped piston tube 2, valve body large diameter portion and path part are coaxially then merged into assembling, and will by screw
First flange and second flange are fastened, and the 3rd O-ring seal is provided between first flange and second flange.
(3) now the one end of return spring 4 is withstood on the valve wall end face of valve body path part, and the other end withstands on T-shaped piston tube 2
On large diameter portion annular end face.The valve wall end face of valve body path part, the large diameter portion annular end face of T-shaped piston tube 2, the big footpath of valve body
An independent secondary oil pocket is formed between internal partial wall face and the minor diameter part of T-shaped piston tube 2 exceptionally wall.The three-way pipe 9 first
Connection end 9a is connected with secondary oil pocket, and the connection end 9b of three-way pipe 9 second is second row stomata, and the second sealing screw 11 is arranged on second
In steam vent, the connection end 9c of three-way pipe 9 the 3rd is connected with the first pipe arm 19a of cross valve body 19.
During installation, the check valve inlet of the first pipe arm 19a is the aperture on an end face, therefore from the 3rd pipe arm 19c's
Port is first put into nonreturn valve core 22, is then placed in spring 23, then pressure-adjusting screw 24 is screwed into, and now spring 23 is compressed in
Between nonreturn valve core 22 and pressure-adjusting screw 24, by the bullet for being screwed into depth adjustment spring 23 for changing pressure-adjusting screw 24
Power, after regulation to required elastic force, is screwed into lock-screw 25 and keeps the position of pressure-adjusting screw 24 to fix, then be screwed into end socket
Screw 26 prevents oil leak.
Finally, the secondary oil pocket oil inlet of the 4th pipe arm 19d is connected or by end cap seal with oil can, with flexible pipe 27 by second
The secondary oil pocket oil-out of pipe arm 19b is connected with the oil inlet 20a of the second check valve 20, and the oil-out 20b of the second check valve 20 connects
It is connected to valve body large diameter portion and is connected with secondary oil pocket.
Operation principle：
During work, oil inlet connection master cylinder, oil-out is connected with wheel cylinder.
(1) the first sealing screw 10 is back-outed from first row stomata, by the wheel cylinder oil connection nut pine at oil outlet
Open, brake fluid injected from fuel feed hole, the air of the inner chamber of T-shaped piston tube 2 and the path partial lumen of the pump housing 1 is drained and fills oil,
Then the first sealing screw 10 is screwed into first row stomata, by the oil connection nut screwing clamping at oil outlet.
(2) second exhaust screw is back-outed, the brake fluid in oil can is injected from the oil inlet of the 4th pipe arm, brake fluid is from the
The oil-out discharge of two pipe arms, the oil inlet of the second check valve 20 is flow to by flexible pipe, and brake fluid is by the second check valve 20
In flowing into secondary oil pocket, when all oil is filled in secondary oil pocket and connecting tube 9, second exhaust screw is screwed into close in second row stomata
Envelope.
(3) two are vented 2-3 times repeatedly more than, firmly believe that air is drained, are otherwise vented again, after confirming that air is drained, i.e.,
Working condition can be initially entered.
(4) in the state of normal vehicle operation, brake pedal does not have the effect of power, due to the elastic force of return spring 4, T-shaped
The bigger diameter end end face of piston tube 2 is contacted with the inner face of T-shaped cylindrical cavity large diameter portion, and draining push rod 3 is by draining nonreturn valve core 6
It is lifted off oil leak hole.
When brake is needed, brake pedal is stepped on pin, brake pedal applies pressure to master cylinder, in master cylinder
Brake fluid is pressed into the inner chamber into T-shaped piston tube 2 from oil inlet, and brake fluid flows out from oil leak hole, then by oil-out flow direction point
Pump.And now, brake fluid is full of under the sealing of the first check valve, second exhaust screw and the second check valve 20, in secondary oil pocket,
So that T-shaped piston tube 2 cannot be moved.
The transmission of brake fluid and T-shaped piston tube 2 in the strength for touching on the brake is by master cylinder so that braked in secondary oil pocket
When the pressure of oil reaches the pressure that the first check valve pre-sets, brake fluid is entered in flexible pipe by the first adjustment check valve, by
Smaller in the volume of secondary oil pocket, the pressure in secondary oil pocket is larger, and flexible pipe has certain volumetric expansion oil storage capacity, at this moment
Brake fluid from the first check valve enter flexible pipe when, during secondary oil pocket will not be returned to by the second check valve at once.
Because brake fluid is reduced and master cylinder carrys out oily pressure and causes that T-shaped piston tube 2 is moved to miner diameter end shifting in secondary oil pocket
Dynamic, when T-shaped piston tube 2 moves 0.5-1 millimeters, draining nonreturn valve core 6 and draining push rod 3 separate that (draining push rod 3 is pushed up when not working
Open about 0.2-0.5 millimeters of draining check valve), draining nonreturn valve core 6 closes oil leak hole 15.
After oil leak hole 15 is closed, the brake fluid in the inner chamber of T-shaped piston tube 2 cannot be by oil leak hole 15, in T-shaped cylindrical cavity
Path part form an independent supercharging grease chamber for separating, at this moment T-shaped piston tube 2 bigger diameter end continue be pressurized, due to T
The major part compression area of shape piston tube 2 is bigger than the compression area of microcephaly, even at the same pressure, T-shaped piston tube 2 also can
Moved to microcephaly direction, so that the oil pressure rising in the small head end and wheel cylinder of T-shaped piston tube 2 will by about one time, pressurised oil
Hydraulic oil in room is pressed into wheel cylinder, completes brake.The size of the oil pressure ratio is by the major part of T-shaped piston and small
The ratio difference of head determines that generation pressure bigger than difference is just big.
After brake is finished, the strength on releasing of brake pedal so that master cylinder depressurizes, master cylinder pressure reduces
So that T-shaped piston tube 2 is back to original position under the elastic force effect of return spring 4.The return of T-shaped piston tube 2 causes secondary oil
Chamber volume increase, produces pull of vacuum so that during the brake fluid in flexible pipe 27 flows into secondary oil pocket from the second check valve 20 so that secondary
Oil is filled again in oil pocket and connecting tube 9.
The maximum of this pump is characterized in using T-shaped piston tube 2, as long as giving suitable pressure tune to the stroke of T-shaped piston tube 2
It is whole, control.The method of the setting is, when stepping on brake pedal pretension or entering braking state, slowly to exit pressure adjustment
Screw 24 so that feel on brake pedal and start to lighten, it is also possible to be adjusted according to the examination of road, using in this pump
, equipped with adjustment on manometric testing stand, more excellent adjustment result is for oil-feed front end and oil outlet end：Front end is 45 kilograms 1 square li
Rice, rear end is 80 centimeters 1 square centimeter.
Claims (4)
1. a kind of relay-type liquid automatic pressure pump for brake hydraulic system, it is characterised in that including the pump housing, T-shaped piston
It is pipe, draining push rod, return spring, draining spring, draining nonreturn valve core, the first O-ring seal, the second O-ring seal, first close
Envelope screw, the first check valve, the second check valve and flexible pipe；
The pump housing is provided with T-shaped cylindrical cavity, and the path portion end surface of T-shaped cylindrical cavity offers oil outlet, T-shaped cylindrical cavity
Large diameter portion end face is provided with fuel feed hole and first row stomata, and the first sealing screw is arranged in first row stomata,
The T-shaped piston tube is arranged in T-shaped cylindrical cavity, the path part of T-shaped piston tube and the minor diameter part of T-shaped cylindrical cavity
Distribution is closed, and the large diameter portion of T-shaped piston tube coordinates with the large diameter portion of T-shaped cylindrical cavity, outside the path part of T-shaped piston tube
First O-ring seal is installed on cylinder, the second O-ring seal is installed on the outer cylinder of the large diameter portion of T-shaped piston tube,
The large diameter portion end face of T-shaped piston tube is logical hydraulic fluid port, and the path portion end surface circle centre position of T-shaped piston tube offers draining
Hole, draining nonreturn valve core is arranged in the path part of T-shaped cylindrical cavity and coordinates with oil leak hole, and draining spring one end is connected to
On draining nonreturn valve core, the draining spring other end is connected to the path part inner face of T-shaped cylindrical cavity,
Return spring is sleeved on the miner diameter end of T-shaped piston tube and is located in the large diameter portion of T-shaped cylindrical cavity,
Draining push rod is flush-mounted on T-shaped piston tube axis and one end is fixed on T-shaped cylindrical cavity bigger diameter end,
The import of the first check valve is connected with T-shaped cylindrical cavity large diameter portion, and the outlet of the first check valve passes through flexible pipe and second
The import connection of check valve, the outlet of the second check valve is connected with T-shaped cylindrical cavity large diameter portion.
2. the relay-type liquid automatic pressure pump of brake hydraulic system is used for as claimed in claim 1, it is characterised in that T-shaped
, more than the total length of T-shaped piston tube, the length of the large diameter portion of T-shaped cylindrical cavity is less than T-shaped piston for the total length of cylindrical cavity
The total length of pipe, the length of the large diameter portion length less than the large diameter portion of T-shaped cylindrical cavity of T-shaped piston tube, draining push rod is long
Total length of the degree more than T-shaped piston tube.
3. the relay-type liquid automatic pressure pump of brake hydraulic system is used for as claimed in claim 1, and the first check valve is can
Adjust pressure check valve.
4. the relay-type liquid automatic pressure pump of brake hydraulic system, the adjustable pressure list are used for as claimed in claim 3
Concrete structure to valve is as follows：Including three-way pipe, the second sealing screw, cross valve body, nonreturn valve core, spring, pressure adjustment
Screw, lock-screw and end socket screw,
The connection end of the three-way pipe first connects with T-shaped cylindrical cavity large diameter portion, and the connection end of three-way pipe second is second exhaust
Hole, the second sealing screw is arranged in second row stomata, and the connection end of three-way pipe the 3rd connects with the check valve inlet of cross valve body
Connect,
First pipe arm of the cross valve body is check valve inlet, and the second pipe arm is secondary oil pocket oil-out, and the 3rd pipe arm is interior
Screwed pipe, the 4th pipe arm is secondary oil pocket oil inlet, and the first pipe arm and the 3rd pipe arm are conllinear, and the second pipe arm and the 4th pipe arm are conllinear,
In the first pipe arm and the 3rd pipe arm, nonreturn valve core, spring, pressure adjustment are followed successively by toward the 3rd tube wall direction from check valve inlet
Screw, lock-screw and end socket screw, the secondary oil pocket oil inlet of the 4th pipe arm are connected or by end cap seal with oil can, and second
The secondary oil pocket oil-out of pipe arm is connected with the oil inlet of the second check valve by flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047247.4A CN106762597B (en) | 2016-11-24 | 2016-11-24 | A kind of relay-type liquid automatic pressure pump for brake hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047247.4A CN106762597B (en) | 2016-11-24 | 2016-11-24 | A kind of relay-type liquid automatic pressure pump for brake hydraulic system |
Publications (2)
| Publication Number | Publication Date |
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| CN106762597A true CN106762597A (en) | 2017-05-31 |
| CN106762597B CN106762597B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611047247.4A Expired - Fee Related CN106762597B (en) | 2016-11-24 | 2016-11-24 | A kind of relay-type liquid automatic pressure pump for brake hydraulic system |
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| CN (1) | CN106762597B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035003U (en) * | 1988-04-30 | 1989-03-29 | 王作仁 | Automatic hydraulic booster pump |
| US4922120A (en) * | 1987-08-28 | 1990-05-01 | Alfred Teves Gmbh | Brake system with slip control |
| CN2227057Y (en) * | 1995-07-07 | 1996-05-15 | 李华新 | Hydraulic reinforcement pump |
| CN2743573Y (en) * | 2004-07-08 | 2005-11-30 | 韩昌求 | Variable capacity booster pump |
| CN2849214Y (en) * | 2006-01-12 | 2006-12-20 | 史占彪 | Booster pump |
| CN205172925U (en) * | 2015-10-16 | 2016-04-20 | 韩昌求 | Variable capacity booster pump |
-
2016
- 2016-11-24 CN CN201611047247.4A patent/CN106762597B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922120A (en) * | 1987-08-28 | 1990-05-01 | Alfred Teves Gmbh | Brake system with slip control |
| CN2035003U (en) * | 1988-04-30 | 1989-03-29 | 王作仁 | Automatic hydraulic booster pump |
| CN2227057Y (en) * | 1995-07-07 | 1996-05-15 | 李华新 | Hydraulic reinforcement pump |
| CN2743573Y (en) * | 2004-07-08 | 2005-11-30 | 韩昌求 | Variable capacity booster pump |
| CN2849214Y (en) * | 2006-01-12 | 2006-12-20 | 史占彪 | Booster pump |
| CN205172925U (en) * | 2015-10-16 | 2016-04-20 | 韩昌求 | Variable capacity booster pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106762597B (en) | 2018-08-03 |
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Granted publication date: 20180803 |