CN2377156Y - Manual hydraulic one-way capacity-increasing pressure-reducing discharge valve - Google Patents
Manual hydraulic one-way capacity-increasing pressure-reducing discharge valve Download PDFInfo
- Publication number
- CN2377156Y CN2377156Y CN 99228245 CN99228245U CN2377156Y CN 2377156 Y CN2377156 Y CN 2377156Y CN 99228245 CN99228245 CN 99228245 CN 99228245 U CN99228245 U CN 99228245U CN 2377156 Y CN2377156 Y CN 2377156Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- center cross
- brake
- end cap
- fluid pressure
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
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- Braking Systems And Boosters (AREA)
Abstract
The utility model provides an one-way increase of manual fluid pressure type step-down blow-down valve just can reach the emission of air (oil) in the brake fluid in the operation of driver's cabin, and the recovery of the oil-gas mixture who discharges out. The utility model comprises two positioning holes phi1The left end of the cross shaft 1 passes through the spring 5 and the central part of the end cover 4, the sealing ring 3 in the end cover 4 and the cross shaft 1 are in a sealing state, the end cover 4 and the valve body 6 are connected and sealed through a thread section, and a connector Z1 and phi in the center of the left side of the valve body 63The holes are communicated, and the interface Z2 and phi are arranged at the lower part of the valve body 62Is communicated with the right end of the cross shaft 1.
Description
The utility model relate at present both at home and abroad automobile hydraulic formula brake transsmission device and " dual circuit hydraulic pressure driving step-down brake transsmission device " patent No. be 98225891.7 with " hold and press driving decompression brake transsmission device " patent No. be the discharging of air in 98227683.4 brakings liquid, also relate to both emergent (Parking) brake equipments of back.
The hydraulic vehicle braking driving device and the patent No. are that 98225891.7,98227683.4 dischargings of installing air in its brakings liquid all are to realize by the special-purpose air bleeder screw plug on the brake wheel cylinder both at home and abroad at present, do to unclamp rotation before promptly discharging earlier, remake behind the discharging absolute oil gas mixture and screw the plug screw processing.This method of operation is very inconvenient, and gives off compound and both caused waste, produces again and pollutes.
The purpose of this utility model then is the problem that exists at above-mentioned prior art, the unidirectional increase-volume step-down of a kind of manual fluid pressure type blowoff valve is provided, just can reach the discharging of air in the braking liquid (oil) driving in-house operation, and the recovery of the gas mixture that gives off, in the patent No. is that this device also can be used as emergent (Parking) brake equipment in 98225891.7,98227683.4 devices, and the hand brake of transmission is omitted.
The purpose of this utility model can reach by following measure:
The unidirectional increase-volume step-down of a kind of manual fluid pressure type blowoff valve is characterized in that it includes two knock hole Φ
1Valve body 6, center cross 1 left end is by spring 5, end cap 4 central parts, end cap 4 inner seal rings 3 are in sealing state with center cross 1, end cap 4 and valve body 6 are connected and seal through thread segment, spring 5 can be done compression extension effect between valve body 6 and center cross 1, and center cross 1 pushed to right-hand member, the interface Z1 and the Φ of valve body 6 left side central authorities
3The hole communicates, and its interface Z1 is connected with air bleeder screw plug aperture pipeline, valve body 6 below interface Z2 and Φ
2Communicate with center cross 1 right-hand member, its interface Z2 promptly leads to atmosphere with suitable for reading connection of oil-storing cup by the road.
The purpose of this utility model can also reach by following measure:
Center cross 1 right-hand member be sector crosssection or spiral slot as passage, end face 4 makes Φ
2Steel ball 7 and hole Φ in the hole
2The hole Φ that communicates
3Be in certain pressure contact and sealing state are arranged;
Between end cap 4 and the center cross 1 dust boot 2 is housed.
Advantage of the present utility model:
1, just being emitted in the operator's compartment of air can direct control in the braking liquid, does not go air bleeder screw plug is rotated again, and be not only laborsaving but also when saving;
2, the gas mixture that gives off flows into oil-storing cup again by pipeline, has both avoided waste, does not produce pollution again;
3, be also to can be used as emergent (Parking) brake equipment in 9823891.7,98227683.4 devices in the patent No., both saved hand brake device, provide convenience for emergency brake again, make service brake safer.
Fig. 1 is a section-drawing of the present utility model.
Fig. 2 is Figure 1A-A cutaway view.
Below in conjunction with accompanying drawing the utility model is further described:
This valve is by two hole Φ on the valve body 6
1Fixing close brake cylinder is taken turns a certain position, the adapter shaft of manual manipulation mechanism (flexible axle or hard axle) is connected with Luo line section on the center cross 1 locatees locking, interface Z1, Z2 on the valve body is tightly connected with brake wheel cylinder venting Luo consent and oil-storing cup input interface (not drawing) respectively by the road, wherein higher pressure requirement is arranged to brake wheel cylinder section pipeline, and the oil-storing cup section pipeline volume that arrives increases, and pressure can descend rapidly, so this section pipeline does not have much pressure requirements.
When center cross 1 left is zero, as shown in Figure 1 since the effort of spring 5 make center cross 1 move right to steel ball 7 at hole Φ
2In with hole Φ
3Be in pressure contact and sealing state, and the maximum pressure that produced much larger than the brake wheel cylinder braking liquid of this place's pressure-act on Φ
3Hole and steel ball 7 parts.Because interface Z1 and brake wheel cylinder connecting bridge braking liquid channel cross-sectional area by the road are very little, the volume that this part is increased is also very little, can brake fluid pressure obviously be descended, and influence service brake or driving.
Be subjected to the application force P of manual mechanism when center cross 1 left after, spring 5 is compressed, and center cross 1 produces displacement to left, with steel ball 7 certain space is arranged, the pressure of braking liquid then promoted steel ball 7 to left movement when this moment, brake wheel cylinder obtained braking (or brake off), and press-brake liquid will be from Φ simultaneously
2Hole and Φ
3And the space flows to the sector space a chamber and the cavity b of center cross 1 between the steel ball 7, because valve body 6 is tightly connected with end cap 4, center cross 1 passes the seal ring 3 in the middle of the end cap 4, press-brake liquid can flow out to interface Z2 in pressure decay naturally, by the road until the oil-storing cup that communicates with atmosphere, this process oil gas can be separated automatically, and braking liquid then can flow into oil-storing cup smoothly and can reuse.
After loosening application force (P=0), the return effect of spring 5 makes it to recover state as shown in Figure 1.
The utility model both had been suitable for the discharging of air in the braking liquid that the patent No. is 98225891.798227683.4, also can be used as emergent (Parking) brake equipment simultaneously, made traditional hand brake device cancellation.
This valve can use in conjunction with assembling according to the dual circuit spatial layout feature in actual use: respectively assemble one as the front and back bridge, be connected with two wheel cylinders by a T-pipe joint, also can connect separately.Because braking liquid brake fluid pressure when producing braking (or brake off) is higher, therefore special vacuum servo formula and vacuum pressure charged device should pay attention to sealing property, note withstand voltage properties again.
Claims (3)
1, the unidirectional increase-volume step-down of a kind of manual fluid pressure type blowoff valve is characterized in that it includes two knock hole Φ
1Valve body (6), center cross (1) left end is by spring (5), end cap (4) central part, end cap (4) inner seal ring (3) and center cross (1) are in sealing state, and end cap (4) and valve body (6) are connected and seal through thread segment, central interface Z1 and Φ on the left of the valve body (6)
3The hole communicates, valve body (6) below interface Z2 and Φ
2And center cross (1) right-hand member communicates.
2, according to the unidirectional increase-volume step-down of the described manual fluid pressure type of claim 1 blowoff valve, it is characterized in that center cross (1) right-hand member is sector crosssection or spiral slot.
3, according to the unidirectional increase-volume step-down of the described manual fluid pressure type of claim 1 blowoff valve, it is characterized in that between end cap (4) and the center cross (1) dust boot (2) being housed
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228245 CN2377156Y (en) | 1999-05-04 | 1999-05-04 | Manual hydraulic one-way capacity-increasing pressure-reducing discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228245 CN2377156Y (en) | 1999-05-04 | 1999-05-04 | Manual hydraulic one-way capacity-increasing pressure-reducing discharge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2377156Y true CN2377156Y (en) | 2000-05-10 |
Family
ID=34017658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99228245 Expired - Fee Related CN2377156Y (en) | 1999-05-04 | 1999-05-04 | Manual hydraulic one-way capacity-increasing pressure-reducing discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2377156Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552558A (en) * | 2013-10-10 | 2014-02-05 | 长春轨道客车股份有限公司 | Railway passenger train brake alarm valve |
-
1999
- 1999-05-04 CN CN 99228245 patent/CN2377156Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552558A (en) * | 2013-10-10 | 2014-02-05 | 长春轨道客车股份有限公司 | Railway passenger train brake alarm valve |
| CN103552558B (en) * | 2013-10-10 | 2015-11-04 | 长春轨道客车股份有限公司 | Railway passenger train brake alarm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |