CN105545993B - A kind of spring catcher with breathing structure - Google Patents
A kind of spring catcher with breathing structure Download PDFInfo
- Publication number
- CN105545993B CN105545993B CN201610035244.2A CN201610035244A CN105545993B CN 105545993 B CN105545993 B CN 105545993B CN 201610035244 A CN201610035244 A CN 201610035244A CN 105545993 B CN105545993 B CN 105545993B
- Authority
- CN
- China
- Prior art keywords
- brake chamber
- spring
- air
- face
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/08—Fluid pressure acting on a membrane-type actuator, e.g. for gas pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/12—Membrane or diaphragm types
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses a kind of spring catchers with breathing structure, spring catcher includes brake chamber, brake chamber is equipped with the pneumostome communicated with the external world, it is equipped at pneumostome for keeping the breathing structure that air pressure balances each other with ambient pressure in brake chamber outside the brake chamber, the breathing structure includes the exhaust apparatus toward extraneous excretion by the gas of brake chamber, the exhaust apparatus is equipped with the inlet duct that ambient atmos are supplied gas toward brake chamber, extend the service life of brake chamber and chamber of driving a vehicle, also reduce the probability that brake apparatus gets rusty simultaneously.
Description
【Technical field】
The present invention relates to a kind of spring catchers with breathing structure.
【Background technology】
Existing service brake mechanism, especially spring check mechanism, inside includes a brake chamber, on brake chamber
It is directly communicated with ambient atmosphere equipped with pneumostome, brake chamber at work, when the air pressure of brake chamber is increased or reduced, is made
Take offence room by pneumostome realize exhaust and air inlet, since pneumostome in the prior art is directly to be communicated with air, be easy
Rubbish and water in air is caused to flow into the inside of brake chamber, moisture content does not empty in time, can cause the diaphragm in arrestment mechanism
Initial failure, after in addition moisture content enters brake chamber, the metal parts such as the spring in brake chamber, gasket can be caused to get rusty,
Hair fastener.
【Invention content】
Problem to be solved by this invention is just to provide a kind of spring catcher with breathing structure, extends brake chamber
With the service life of driving chamber, while the probability that brake apparatus gets rusty is also reduced.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of spring catcher with breathing structure, spring catcher include brake chamber, brake chamber be equipped with
The pneumostome that the external world communicates is equipped with for keeping air pressure and extraneous gas in brake chamber at pneumostome outside the brake chamber
It includes the exhaust apparatus toward extraneous excretion, institute by the gas of brake chamber to press the breathing structure to balance each other, the breathing structure
It states exhaust apparatus and is equipped with the inlet duct that ambient atmos are supplied gas toward brake chamber.
Preferably, the breathing structure includes exhaust joint, and exhaust joint differs inner and outer tubes including two sections of diameters,
The diameter of inner tube is smaller than outer tube diameter, and inner tube is towards the pneumostome.
Preferably, the exhaust apparatus includes air bleeding valve, and air bleeding valve is located in the outer tube, the inner face of air bleeding valve with it is interior
The end face of pipe offsets, and (the first back-moving spring is compressed on the outer end face of air bleeding valve, is set between the inner face and outer end face of air bleeding valve
There is gas vent.
Preferably, the inner wall of the outer tube is equipped with snap ring, and the (the first back-moving spring is located at the outer of snap ring and air bleeding valve
Between end face.
Preferably, the (the first back-moving spring is volute spring, is relatively large in diameter the outer end face held towards outer tube.
Preferably, the air bleeding valve is equipped with centre bore, and the inlet duct includes air inlet valve lever, and air inlet valve lever passes through institute
Centre bore is stated, the inner end of air inlet valve lever is equipped with the spacing ring to offset with the inner face of air bleeding valve, and the outer end of air inlet valve lever is compressed with
Second back-moving spring.
Preferably, the outer end of air inlet valve lever is equipped with annular convex ring, and the is equipped between annular convex ring and the outer end face of air bleeding valve
Two resetting springs.
Preferably, the outer end face of the air inlet valve lever is equipped with the central blind hole of indent.
Preferably, the air inlet valve lever is through with air admission hole in radial direction, and air admission hole is communicated with the central blind hole.
Preferably, it is through with via hole between the inner wall and outer wall of the outer tube.
The present invention spring brake cylinder, the outside of brake chamber be mounted with one can be with the breathing knot of air inlet and exhaust
Structure, inside are individually used for the exhaust apparatus of the discharge outward of the gas in brake chamber and one being individually used for including one
By the inhalant inlet duct of ambient atmos, when the air pressure in brake chamber increases, the gas in brake chamber passes through exhaust
Device exhaust pressure relief, when exhaust, inlet duct is closed；When the air pressure of brake chamber reduces, inlet duct is opened, outside air
Enter brake chamber by inlet duct, when air inlet, exhaust apparatus is closed；When entire brake apparatus does not work, brake chamber
Air pressure and ambient pressure keep balancing, breathing equipment is entirely in and closes device, and outside air cannot be introduced into braking gas at this time
In room, i.e., when brake apparatus does not work, the moisture and dust in the effective protection external world enter in brake chamber, even if being filled in braking
When setting work, the independent inlet duct and independent exhaust apparatus of breathing structure are relative to traditional direct and extraneous structure communicated
For, it is possibility to have effect reduces the entrance of moisture and dust, to extend the service life of brake chamber, while also reducing system
The probability that dynamic device gets rusty.
In addition, the breathing structure in the present invention is mounted in outside brake chamber, installation easy to disassemble.
These features and advantages of the present invention will the detailed exposure in following specific implementation mode, attached drawing.
【Description of the drawings】
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural schematic diagram of spring catcher in the prior art；
Fig. 2 is the structural schematic diagram of spring catcher of the present invention；
Fig. 3 is the enlarged diagram of breathing structure in spring catcher of the present invention.
【Specific implementation mode】
The technical solution of the embodiment of the present invention is explained and illustrated with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiment without making creative work, belongs to protection scope of the present invention.
Referring to Fig.1, spring catcher in the prior art, including driving chamber 1 and brake chamber 2, driving chamber 1 and braking
There is diaphragm 10 between gas chamber 2, driving chamber 1 is equipped with driving chamber air inlet, is equipped with piston rod 22 in brake chamber 2, compressed spring 23,
Brake chamber 2 is equipped with the pneumostome 21 communicated with the external world, and at work, the air pressure of brake chamber 2 increases or drop for brake chamber 2
When low, brake chamber 2 realizes that exhaust and air inlet, pneumostome 21 in the prior art are provided in braking gas by pneumostome 21
Through-hole on the cylinder body of room, directly communicates with air.
The present embodiment：On the basis of the spring catcher of the prior art, at the pneumostome 21 outside brake chamber 2
It is additional to have installed additional for keeping the breathing structure 3 that air pressure balances each other with ambient pressure in brake chamber 2, the breathing structure 3
Include the exhaust apparatus by the gas of brake chamber 2 toward extraneous excretion, the exhaust apparatus is equipped with the past braking of ambient atmos
The inlet duct that gas chamber 2 is supplied gas, when the air pressure in brake chamber 2 increases, the gas in brake chamber 2 is arranged by exhaust apparatus
Gas pressure release, when exhaust, inlet duct is closed；When the air pressure of brake chamber 2 reduces, inlet duct is opened, and outside air passes through
Inlet duct enters brake chamber 2, and when air inlet, exhaust apparatus is closed；When the air pressure of brake chamber 2 keeps flat with ambient pressure
Weighing apparatus, breathing equipment are entirely in and close device, and outside air cannot be introduced into brake chamber 2 at this time, i.e., in brake apparatus not work
The moisture and dust in the effective protection external world enter in brake chamber 2 when making, even if when brake apparatus works, breathing structure 3
Independent inlet duct and independent exhaust apparatus are for traditional direct and extraneous structure communicated, it is possibility to have effect is reduced
The entrance of moisture and dust to extend the service life of brake chamber 2, while also reducing the probability that brake apparatus gets rusty,
In addition, the breathing structure 3 in the present embodiment is mounted in outside brake chamber 2, installation easy to disassemble.
Breathing structure 3 in the present embodiment is specific as shown in Figure 3, and the breathing structure 3 includes exhaust joint, for side
Just be described below, in exhaust joint defined in the present embodiment towards 21 side of pneumostome be inside, far from 21 direction of pneumostome be outer
Side, exhaust joint include the inner tube 31 and outer tube 32 that two sections of diameters differ, and the diameter of inner tube 31 is smaller than 32 diameter of outer tube, inner tube 31
Towards the pneumostome 21, the outer wall of cylinder block of brake chamber 2 is fixed with installation set 24 in the present embodiment, the outer wall of said inner tube 31 with
Stretch into the inner cavity of installation set 24, be used in combination sealing material be filled between the outer wall of inner tube 31 and the inner wall of outer tube 32 realize it is close
Envelope, the exhaust apparatus includes air bleeding valve 34, and air bleeding valve 34 is located in the outer tube 32, inner face and the inner tube 31 of air bleeding valve 34
Outer end face offset, when not being vented, the inner face of air bleeding valve 34 and the outer end face of inner tube 31 offset sealing, and gas cannot be from
Enter outer tube 32 in inner tube 31, (the first back-moving spring 35 is compressed on the outer end face of air bleeding valve 34, positioning first is multiple for convenience
The inner wall of position spring 35, the outer tube 32 is equipped with annular groove, and annular groove is embedded with snap ring 36, and the (the first back-moving spring 35 is set
Between snap ring 36 and the outer end face of air bleeding valve 34, gas vent 341, exhaust are equipped between the inner face and outer end face of air bleeding valve 34
When, the air pressure in brake chamber 2 is got higher, and air pressure overcomes the compressing force of (the first back-moving spring 35 to push the sidesway outward of air bleeding valve 34
Dynamic, the inner face of air bleeding valve 34 is detached with the outer end face of inner tube 31, and gas at this time is discharged to outer tube 32 from gas vent 341
Outside, when the air pressure in brake chamber 2 is balanced with ambient pressure, the weight under the elastic force effect of (the first back-moving spring 35 of air bleeding valve 34
It is new to close.Preferably, the (the first back-moving spring 35 is volute spring, end is relatively large in diameter towards the outer end face of outer tube 32, taper
The characteristics of spring is that rigid beginning elastic force is small, and compressing force increment is apparent after being compressed to a certain amount of, uses effect in the present embodiment
Fruit is sensitivity higher, can be opened as long as having minute-pressure, and will not open excessive after opening, and effectively prevent the bulky grains such as dust
Object enters.
Inlet duct in the present embodiment is to be located to be set up directly on exhaust apparatus, and as shown in Figure 3, the present embodiment exists
Air bleeding valve 34 is equipped with centre bore, and the inlet duct includes air inlet valve lever 37, and air inlet valve lever 37 passes through the centre bore, air inlet
The inner end of valve rod 37 is equipped with the spacing ring 371 to offset with the inner face of air bleeding valve 34, and the diameter of spacing ring 371 is more than centre bore
Diameter, under non-air-suction state, spacing ring 371 is close to sealing, the outer end of air inlet valve lever 37 with the inner face of air bleeding valve 34
It is compressed with second back-moving spring 38, in order to facilitate location and installation second back-moving spring 38, the outer end of air inlet valve lever 37 is equipped with radial direction
The annular convex ring extended outward, second back-moving spring 38 are located between annular convex ring and the outer end face of air bleeding valve 34, in exhaust,
Air inlet valve lever 37 is to follow air bleeding valve 34 to be integrally moved to the outside, and the spacing ring 371 of air inlet valve lever 37 and air bleeding valve 34 are always
It is held against sealing, when the air pressure of brake chamber 2 is less than ambient pressure, ambient pressure can overcome the pressure of second back-moving spring 38
Contracting pushes dynamic air inlet valve lever 37 toward medial movement, and spacing ring 371 is detached with air bleeding valve 34 at this time, and extraneous air can be from limit
Gap between ring 371 and air bleeding valve 34 enters in brake chamber 2, when the air pressure of brake chamber 2 and ambient pressure balance, into
Air valve stem 37 is re-closing off under the elastic force of second back-moving spring 38, in addition, in order to increase intake efficiency, the air inlet valve lever
37 outer end face is equipped with the central blind hole 372 of indent, and gas can push air inlet valve lever 37 into central blind hole 372, increases
The contact area of aerating body and air inlet valve lever 37, at the same it is preferred, and the air inlet valve lever 37 is through with air admission hole in radial direction
373, air admission hole 373 is communicated with the central blind hole 372, and the gas into central blind hole 372 can be entered by air admission hole 373
In inner tube 31.Inlet duct is directly arranged on exhaust apparatus in the present embodiment, and overall volume is small, and the two mutual when working is not done
It disturbs, all works independently.
In addition, whole with extraneous degree of communicating in order to increase breathing structure 3 in the present embodiment, the inner wall of the outer tube 32 and
It is through with via hole 321 between outer wall, increases the efficiency of air inlet, exhaust.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but not limited to attached drawing and interior described in specific implementation mode above
Hold.The modification of any function and structure principle without departing from the present invention is intended to be included in the range of claims.
Claims (6)
1. a kind of spring catcher with breathing structure, spring catcher includes brake chamber and driving chamber, the driving
Diaphragm is equipped between chamber and brake chamber, brake chamber is equipped with the pneumostome communicated with the external world, which is characterized in that the braking gas
Outdoor is equipped at pneumostome for keeping the breathing structure that air pressure balances each other with ambient pressure in brake chamber, described to exhale
It includes the exhaust apparatus by the gas of brake chamber toward extraneous excretion to inhale structure, and the exhaust apparatus is equipped with ambient atmos are past
The inlet duct that brake chamber is supplied gas, the breathing structure include exhaust joint, and exhaust joint differs interior including two sections of diameters
Pipe and outer tube, the diameter of inner tube is smaller than outer tube diameter, and inner tube includes air bleeding valve towards the pneumostome, the exhaust apparatus, is vented
Valve is located in the outer tube, and the inner face of air bleeding valve and the end face of inner tube offset, and it is multiple that first is compressed on the outer end face of air bleeding valve
Position spring, is equipped with gas vent between the inner face and outer end face of air bleeding valve, the air bleeding valve is equipped with centre bore, the air inlet dress
It sets including air inlet valve lever, air inlet valve lever passes through the centre bore, and the inner end of air inlet valve lever is equipped with to offset with the inner face of air bleeding valve
Spacing ring, the outer end of air inlet valve lever is compressed with second back-moving spring, and the outer end of air inlet valve lever is equipped with annular convex ring, described second
Resetting spring is located at the outer end face of annular convex ring and air bleeding valve.
2. a kind of spring catcher with breathing structure as described in claim 1, it is characterised in that：The inner wall of the outer tube
It is equipped with snap ring, the (the first back-moving spring is located between snap ring and the outer end face of air bleeding valve.
3. a kind of spring catcher with breathing structure as described in claim 1, it is characterised in that：Described first resets bullet
Spring is volute spring, is relatively large in diameter the outer end face held towards outer tube.
4. a kind of spring catcher with breathing structure as described in claim 1, it is characterised in that：The air inlet valve lever
Outer end face is equipped with the central blind hole of indent.
5. a kind of spring catcher with breathing structure as claimed in claim 4, it is characterised in that：The air inlet valve lever exists
Radial direction is through with air admission hole, and air admission hole is communicated with the central blind hole.
6. a kind of spring catcher with breathing structure as described in one of Claims 1 to 4, it is characterised in that：It is described outer
It is through with via hole between the inner wall and outer wall of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035244.2A CN105545993B (en) | 2016-01-19 | 2016-01-19 | A kind of spring catcher with breathing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035244.2A CN105545993B (en) | 2016-01-19 | 2016-01-19 | A kind of spring catcher with breathing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105545993A CN105545993A (en) | 2016-05-04 |
| CN105545993B true CN105545993B (en) | 2018-08-03 |
Family
ID=55825424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035244.2A Active CN105545993B (en) | 2016-01-19 | 2016-01-19 | A kind of spring catcher with breathing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105545993B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884912A (en) * | 2017-03-08 | 2017-06-23 | 广西柳工机械股份有限公司 | Engineering machinery brake chamber |
| CN112064742A (en) * | 2020-09-27 | 2020-12-11 | 佛山市己阿已磁电设备有限公司 | Respirator for keeping air pressure of pipeline stable |
| CN114470668B (en) * | 2021-12-08 | 2023-07-21 | 南京欣三人行网络科技有限公司 | Pulmonary function rehabilitation physiotherapy device for respiratory medicine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946680C1 (en) * | 1999-09-29 | 2001-01-18 | Knorr Bremse Systeme | Pneumatically-operated disc brake for commercial vehicle has flange opening in brake saddle for provided with cover preventing ingress of dirt when pneumatic cylinder is not in place |
| CN2695747Y (en) * | 2004-04-30 | 2005-04-27 | 上海航天设备制造总厂 | Breathing vlave |
| WO2012164587A2 (en) * | 2011-05-26 | 2012-12-06 | Wabco India Limited | Internal breather valve for spring brake actuators |
| DE102012006090A1 (en) * | 2012-03-26 | 2013-09-26 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Disk brake for commercial vehicles, has sealing element arranged between plunger and brake caliper for sealing opening, where plunger is secured by holding element and withdrawn against from brake caliper |
| TWM496705U (en) * | 2014-11-26 | 2015-03-01 | Lun Pin Entpr Co Ltd | Oil tank cover with pressure regulating valve and pressure regulating valve thereof |
| CN205533907U (en) * | 2016-01-19 | 2016-08-31 | 浙江万安科技股份有限公司 | Spring brake device of structure is breathed in area |
-
2016
- 2016-01-19 CN CN201610035244.2A patent/CN105545993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946680C1 (en) * | 1999-09-29 | 2001-01-18 | Knorr Bremse Systeme | Pneumatically-operated disc brake for commercial vehicle has flange opening in brake saddle for provided with cover preventing ingress of dirt when pneumatic cylinder is not in place |
| CN2695747Y (en) * | 2004-04-30 | 2005-04-27 | 上海航天设备制造总厂 | Breathing vlave |
| WO2012164587A2 (en) * | 2011-05-26 | 2012-12-06 | Wabco India Limited | Internal breather valve for spring brake actuators |
| DE102012006090A1 (en) * | 2012-03-26 | 2013-09-26 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Disk brake for commercial vehicles, has sealing element arranged between plunger and brake caliper for sealing opening, where plunger is secured by holding element and withdrawn against from brake caliper |
| TWM496705U (en) * | 2014-11-26 | 2015-03-01 | Lun Pin Entpr Co Ltd | Oil tank cover with pressure regulating valve and pressure regulating valve thereof |
| CN205533907U (en) * | 2016-01-19 | 2016-08-31 | 浙江万安科技股份有限公司 | Spring brake device of structure is breathed in area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105545993A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105545993B (en) | A kind of spring catcher with breathing structure | |
| CN106164427B (en) | Ventilating system for supercharged combustion engine | |
| CN206361156U (en) | A kind of vapour-pressure type acceleration switching valve | |
| CN205533907U (en) | Spring brake device of structure is breathed in area | |
| CN205851310U (en) | A kind of Pneumatic impact vibrator | |
| CN205605696U (en) | A breathe structure for spring brake device | |
| CN201615159U (en) | Piston type brake sub-chamber | |
| CN205402160U (en) | Pneumatic lifter of self tightening sealing | |
| CN106855143A (en) | A kind of diaphragm check valve | |
| CN208295002U (en) | A kind of internal respiration structure spring brake chamber | |
| CN205781133U (en) | A kind of lossless check valve of pressure | |
| CN110067777A (en) | A kind of flow increasing water pump | |
| CN202149164U (en) | Internal respiration type spring air chamber | |
| CN201377421Y (en) | Unloading valve of pneumatic compressor | |
| CN208107171U (en) | A kind of selector valve for preventing valve body piston stuck | |
| CN102466046A (en) | Air return valve for inner air return independent discharge spring braking air chamber | |
| US10647309B2 (en) | Quick Service Limiting Valve | |
| CN209410044U (en) | A kind of main brake valve waterproof construction | |
| CN207485546U (en) | A kind of new lever type exhaust brake valve | |
| CN105944950A (en) | Pneumatic impact type vibrator | |
| CN101850764A (en) | Vehicle axle | |
| CN207328424U (en) | Triple valve | |
| CN105782477A (en) | Electric regulating valve | |
| CN205930753U (en) | Multi -functional pop valve | |
| CN209725031U (en) | A kind of anti-brake force superposition spring brake chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Spring braking device with breathing structure Effective date of registration: 20211222 Granted publication date: 20180803 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG VIE SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021980015560 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |