CN202992199U - Two-position three-way solenoid valve for braking system of engine - Google Patents
Two-position three-way solenoid valve for braking system of engine Download PDFInfo
- Publication number
- CN202992199U CN202992199U CN 201220734814 CN201220734814U CN202992199U CN 202992199 U CN202992199 U CN 202992199U CN 201220734814 CN201220734814 CN 201220734814 CN 201220734814 U CN201220734814 U CN 201220734814U CN 202992199 U CN202992199 U CN 202992199U
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- China
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- slide block
- iron core
- cavity
- steel ball
- push rod
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- Expired - Fee Related
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Abstract
The utility model discloses a two-position three-way solenoid valve for a braking system of an engine. The two-position three-way solenoid valve comprises a shell, a steel ball, a push rod, a slide block, a spring, an iron core and coils, wherein the iron core is fixed to the upper end of the shell; the coils are fixed to the lower end of the iron core; the slide block is arranged below the iron core in an up-and-down sliding mode; the spring is stressed to be arranged between the iron core and the slide block compressively; an oil outlet, an oil drainage port and a cavity are formed in the lower end of the shell; the cavity is communicated with the oil outlet; an oil inlet is formed in the bottom of the cavity; a push rod hole which is communicated with the oil drainage port is formed in the top of the cavity; the steel ball is arranged in the cavity in an up-and-down movable mode; the push rod is arranged in the push rod hole in an up-and-down movable mode; and two ends of the push rod are in contact with the slide block and the steel ball. The two-position three-way solenoid valve is reasonable in design and simple and small in structure; voltage during operation is reduced with the increase of the pressure of a working medium within the bearable pressure range of the spring; and the slide block is arranged internally, and a copper sleeve is used for guiding, so that sliding resistance is reduced greatly.
Description
Technical field
The utility model relates to solenoid valve, particularly a kind of engine braking system two-position three way magnetic valve.
Background technique
Need use two-position three way magnetic valve and be lubricated oily break-make control in engine braking system.
U. S. Patent 4240051 discloses a kind of two-position three way magnetic valve, sees Fig. 1, during no electric circuit, steel ball by spring top in the push-rod hole lower end surface, thereby seal up oil inlet hole, therefore be in off working state.After energising, the coil magnetizing iron core, slide block is by the downward adhesive of iron core, and steel ball and push rod are promoted downwards by slide block, thus the oil inlet hole passage is opened, and spring eye, that is to say upper-end surface, draining hole by steel ball sealing simultaneously, and is therefore in running order.
After outage, iron core demagnetization, slide block, steel ball, push rod are promoted to move upward by spring, thereby seal up the push-rod hole lower end surface, and simultaneously, the draining passage is opened, and therefore is in off working state.
The push rod of this structure is placed in oil inlet hole, thereby needs larger oil inlet hole aperture, and spring force that must be larger can withstand steel ball, and then needs larger electromagnetic force; Push rod and iron core pilot hole except provide endwisely slip, also will play seal action to the oil in the oil-feed cavity, so matching gap to be controlled strictly; Slide block thickness is limited by structure length, and radius is larger, and is bad if slip resistance and guiding are controlled, and can offset the considerable part electromagnetic force during work;
Chinese patent 200910103393.8 discloses a kind of two-position three way magnetic valve, see Fig. 2, after energising, the coil magnetizing iron core, slide block is by the downward adhesive of iron core, and the promotion push rod, thereby the draining steel ball is pressed on spill port and seals, the draining steel ball drives push rod and makes the oil-feed steel ball leave the oil-feed aperture simultaneously.Thereby oil inlet passage is opened, and is therefore in running order.
After outage, iron core demagnetization, axially the pressure oil of push rod lumen pore upwards pushes away the draining steel ball, and drive push rod, slide block moves upward, the draining steel ball leaves the draining hole, makes the draining passage open; Simultaneously, the oil-feed steel ball is driven by pressure oil and seals up the oil-feed aperture, thereby cuts off oil inlet passage, therefore is in off working state.
In the oil inlet passage of this structure, push rod is arranged, if when requiring identical logical pasta to amass, this structure needs larger electromagnetic force, therefore needs larger structure; When velocity of medium was inadequate, oil-feed steel ball resetting time can be long, even can't reset, and causing solenoid valve to be in can't closed condition; The slide block of this structure is external, guiding and the bad solution of resistance problem.
Summary of the invention
The purpose of this utility model is, for the problems referred to above, provides a kind of engine braking system two-position three way magnetic valve, and it is rational in infrastructure simple, design ingeniously, and volume is little, manufactures simply.
The technological scheme that the utility model adopts for achieving the above object is:
a kind of engine braking system two-position three way magnetic valve, it comprises housing, steel ball, push rod, slide block, spring, iron core and coil, this iron core is fixed in the upper end of housing, this coil is fixed in the lower end of iron core, this slide block can slide up and down to be arranged at below iron core, this spring stress is arranged between this iron core and slide block compressively, also be provided with an oil outlet in this housing lower end, one drain tap and a cavity, this cavity is connected with oil outlet, be provided with a filler opening in the bottom of this cavity, be provided with a push-rod hole that is connected with drain tap in the top of this cavity, this steel ball can be arranged in this cavity up or down, this push rod can be arranged in this push-rod hole up or down, the two ends of this push rod respectively with slide block, steel ball contacts.
It also comprises a briquetting, and described briquetting is arranged in this housing and is positioned at the below of slide block, and described push-rod hole is arranged on this briquetting, and the underpart of this push-rod hole is provided with chamfering.
It also comprises a copper sheathing, and this copper sheathing is placed on this iron core, and described slide block is mounted slidably in this copper sheathing.
Described coil is arranged on a coil rack, and this coil rack is fixed on this iron core, and this coil rack is provided with two tenminal blocks.
The top of described slide block is provided with a depression, and this depression is placed in described spring wherein, and the bottom of this spring and the bottom connection of depression touch.
The diameter of described steel ball is greater than the aperture of this push-rod hole and the diameter of filler opening.
The beneficial effects of the utility model are: the utility model is reasonable in design, simple in structure, push rod is placed in push-rod hole, thereby matching gap can be larger, more easily controls, in the pressure range that spring can bear, working medium pressure is larger, and the voltage in the time of can working is lower, because slide block is built-in, therefore the copper sheathing guiding reduces slip resistance greatly.
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated.
Description of drawings
Fig. 1 is the structural representation of U. S. Patent 4240051;
Fig. 2 is the structural representation of Chinese patent 200910103393.8;
Structural representation when Fig. 3 is the utility model off working state;
Structural representation when Fig. 4 is the utility model working state.
Embodiment
embodiment: see Fig. 3 and Fig. 4, a kind of engine braking system two-position three way magnetic valve of the utility model, it comprises housing 1, steel ball 2, push rod 3, slide block 4, spring 5, iron core 6 and coil 7, this iron core 6 is fixed in the upper end of housing 1, this coil 7 is fixed in the lower end of iron core 6, this slide block 4 can slide up and down to be arranged at iron core 6 belows, this spring 5 is stressed to be arranged between this iron core 6 and slide block 4 compressively, also be provided with an oil outlet 11 in this housing 1 lower end, one drain tap 12 and a cavity 13, this cavity 13 is connected with oil outlet 11, be provided with a filler opening 14 in the bottom of this cavity 13, be provided with a push-rod hole 151 that is connected with drain tap 12 in the top of this cavity 13, this steel ball 2 can be arranged in this cavity 13 up or down, this push rod 3 can be arranged in this push-rod hole 151 up or down, the two ends of this push rod 3 respectively with slide block 4, steel ball 2 contacts.Filler opening 14 is connected with the oil leab of motor, and oil outlet 11 is connected with engine braking system, and drain tap 12 is communicated with atmosphere.
It also comprises a briquetting 15, and described briquetting 15 is arranged in this housing 1 and is positioned at the below of slide block 4, and described push-rod hole 151 is arranged on this briquetting 15, and the underpart of this push-rod hole 151 is provided with chamfering.
It also comprises a copper sheathing 8, and this copper sheathing 8 is placed on this iron core 6, and described slide block 4 is mounted slidably in this copper sheathing 8.
Described coil 7 is arranged on a coil rack 9, and this coil rack 9 is fixed on this iron core 6, and this coil rack 9 is provided with two tenminal blocks 91.
The top of described slide block 4 is provided with a depression, and this depression is placed in described spring 5 wherein, and the bottom of this spring 5 and the bottom connection of depression touch.
The diameter of described steel ball 2 is greater than the aperture of this push-rod hole 151 and the diameter of filler opening 14.
The utility model is when no electric circuit, and steel ball 2, push rod 3 and slide block 4 are being pushed away by spring 5 and moving downward, and steel ball 2 seals up filler opening 14 upper-end surfaces, therefore is in off working state.
After energising, coil 7 magnetization iron cores 6, slide block 4 is by iron core 6 adhesives, steel ball 2 and push rod 3 are promoted to move upward by oil pressure after losing spring-force driven dual, steel ball 2 is sealed up the lower end surface in briquetting 15 upper push-rod holes 151 by oil pressure, thereby filler opening 14 is opened to the passage of oil outlet 11, and is therefore in running order.
After outage, iron core 6 demagnetizations, slide block 4 is promoted to move downward by spring 5 again, steel ball 2, push rod 3 are pushed simultaneously and move downward, thereby seal up filler opening 14 upper-end surfaces, disconnect the passage between filler opening 14 and oil outlet 11, simultaneously, the draining passage that gap between push rod 3 and push-rod hole 151 forms is opened, and therefore is in off working state.
The utility model is reasonable in design, simple in structure, push rod 3 is placed in push-rod hole 151, thereby matching gap can be larger, more easily controls, in the pressure range that spring 5 can bear, working medium pressure is larger, and the voltage in the time of can working is lower, because slide block 4 is built-in, therefore copper sheathing 8 guiding reduce slip resistance greatly.
As described in the utility model embodiment, with other engine braking system two-position three way magnetic valves of the same or similar structure of the utility model, all in the utility model protection domain.
Claims (6)
1. engine braking system two-position three way magnetic valve, it comprises housing, steel ball, push rod, slide block, spring, iron core and coil, it is characterized in that: this iron core is fixed in the upper end of housing, this coil is fixed in the lower end of iron core, this slide block can slide up and down to be arranged at below iron core, this spring stress is arranged between this iron core and slide block compressively, also be provided with an oil outlet in this housing lower end, one drain tap and a cavity, this cavity is connected with oil outlet, be provided with a filler opening in the bottom of this cavity, be provided with a push-rod hole that is connected with drain tap in the top of this cavity, this steel ball can be arranged in this cavity up or down, this push rod can be arranged in this push-rod hole up or down, the two ends of this push rod respectively with slide block, steel ball contacts.
2. engine braking system two-position three way magnetic valve according to claim 1, it is characterized in that, it also comprises a briquetting, and described briquetting is arranged in this housing and is positioned at the below of slide block, described push-rod hole is arranged on this briquetting, and the underpart of this push-rod hole is provided with chamfering.
3. engine braking system two-position three way magnetic valve according to claim 1, is characterized in that, it also comprises a copper sheathing, and this copper sheathing is placed on this iron core, and described slide block is mounted slidably in this copper sheathing.
4. engine braking system two-position three way magnetic valve according to claim 1, is characterized in that, described coil is arranged on a coil rack, and this coil rack is fixed on this iron core, and this coil rack is provided with two tenminal blocks.
5. engine braking system two-position three way magnetic valve according to claim 1, is characterized in that, the top of described slide block is provided with a depression, and this depression is placed in described spring wherein, and the bottom of this spring and the bottom connection of depression touch.
6. engine braking system two-position three way magnetic valve according to claim 1, is characterized in that, the diameter of described steel ball is greater than the aperture of this push-rod hole and the diameter of filler opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734814 CN202992199U (en) | 2012-12-28 | 2012-12-28 | Two-position three-way solenoid valve for braking system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734814 CN202992199U (en) | 2012-12-28 | 2012-12-28 | Two-position three-way solenoid valve for braking system of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992199U true CN202992199U (en) | 2013-06-12 |
Family
ID=48563380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734814 Expired - Fee Related CN202992199U (en) | 2012-12-28 | 2012-12-28 | Two-position three-way solenoid valve for braking system of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235474A (en) * | 2014-09-26 | 2014-12-24 | 新乡北方液压传动机械有限公司 | Two-position and three-way solenoid valve |
| CN112797171A (en) * | 2021-01-27 | 2021-05-14 | 中国航发长春控制科技有限公司 | Anti-surge air-release valve structure of engine air system |
| CN114811158A (en) * | 2022-04-13 | 2022-07-29 | 重庆红江机械有限责任公司 | Dual-mode parking electromagnetic valve of electro-hydraulic speed regulator |
-
2012
- 2012-12-28 CN CN 201220734814 patent/CN202992199U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235474A (en) * | 2014-09-26 | 2014-12-24 | 新乡北方液压传动机械有限公司 | Two-position and three-way solenoid valve |
| CN104235474B (en) * | 2014-09-26 | 2017-08-25 | 新乡北方液压传动机械有限公司 | A kind of two-bit triplet magnetic valve |
| CN112797171A (en) * | 2021-01-27 | 2021-05-14 | 中国航发长春控制科技有限公司 | Anti-surge air-release valve structure of engine air system |
| CN114811158A (en) * | 2022-04-13 | 2022-07-29 | 重庆红江机械有限责任公司 | Dual-mode parking electromagnetic valve of electro-hydraulic speed regulator |
| CN114811158B (en) * | 2022-04-13 | 2024-01-09 | 重庆红江机械有限责任公司 | Dual-mode parking electromagnetic valve of electro-hydraulic speed regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |