CN204239810U - For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system - Google Patents
For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system Download PDFInfo
- Publication number
- CN204239810U CN204239810U CN201420652237.3U CN201420652237U CN204239810U CN 204239810 U CN204239810 U CN 204239810U CN 201420652237 U CN201420652237 U CN 201420652237U CN 204239810 U CN204239810 U CN 204239810U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic proportional
- proportional valve
- spool
- valve
- epc
- 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 - Lifetime
Links
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
- Servomotors (AREA)
Abstract
用于挖掘机系统的PC-EPC的电磁比例阀改良结构，涉及电磁比例阀领域。本实用新型解决了现有的用于小松-7-8系统的PC-EPC电磁比例阀输出不正常，经常性的卡滞，引起液压泵功率偏大或偏小，使得挖掘机出现经常性的憋车和动作慢的问题。用于挖掘机系统的PC-EPC的电磁比例阀改良结构，它包括电磁比例阀主体；电磁比例阀主体包括阀体和阀芯；阀芯位于阀体中，阀芯的顶部设置有电磁阀；阀芯的中间位置设置有平衡槽；阀芯的底部设置有导向部；阀芯的中下游位置设置有D部凸棱和B部凸棱。本实用新型的电磁比例阀工作稳定，灵敏度大大增加，解决了原来易卡滞的问题，使得挖掘机出现经常性的憋车和动作慢的问题得以解决。
The invention discloses an improved structure of an electromagnetic proportional valve of a PC-EPC used in an excavator system, relating to the field of electromagnetic proportional valves. The utility model solves the problem that the output of the existing PC-EPC electromagnetic proportional valve used in the Komatsu-7-8 system is abnormal, and the frequent stagnation causes the power of the hydraulic pump to be too large or too small, which makes the excavator appear frequent The problem of holding back the car and moving slowly. The improved structure of the electromagnetic proportional valve of PC-EPC used in the excavator system includes the main body of the electromagnetic proportional valve; the main body of the electromagnetic proportional valve includes a valve body and a valve core; the valve core is located in the valve body, and the top of the valve core is provided with a solenoid valve; A balance groove is provided in the middle of the spool; a guide portion is provided at the bottom of the spool; and a D-part convex rib and a B-part convex rib are provided at the middle and downstream positions of the valve core. The electromagnetic proportional valve of the utility model works stably, and the sensitivity is greatly increased, which solves the original problem of being easy to get stuck, and solves the problems of the excavator frequently holding the car and moving slowly.
Description
Technical field
The utility model relates to electromagnetic proportional valve field, particularly relates to the electromagnetic proportional valve structure-improved of the PC-EPC for excavator system.
Background technique
The oil hydraulic pump power limitation control system of existing little Song-7-8 hydraulic shovel system is actual power by increasing or reduce oil hydraulic pump and then mates motor set rotary speed, and the existing PC-EPC electromagnetic proportional valve for little Song-7-8 system exports abnormal, regular clamping stagnation, cause oil hydraulic pump power bigger than normal or less than normal, excavator will be caused to occur the regular problem of suppressing car and slow motion, had a strong impact on the use of little Song-7-8 hydraulic shovel.
Model utility content
For solving the problems of the technologies described above, the utility model provides the electromagnetic proportional valve structure-improved for little Song-7-8 system PC-EPC.
The utility model solves the technological scheme that its technical problem adopts: for the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system, it comprises solenoid-operated proportional valve body; Described solenoid-operated proportional valve body comprises valve body and spool; Described spool is arranged in valve body, and the top of described spool is provided with solenoid valve for promoting spool; The neutral position of described spool is provided with compensating groove; The bottom of described spool is provided with guide portion; The middle and lower reaches position of described spool is provided with D portion fin and B portion fin; The area of the cross section of described D portion fin is greater than the area of the cross section of B portion fin.
The thrust of described solenoid valve is 4.5kg/1000mA.
Described thrust is that 4.5kg/1000mA refers to that solenoid valve is when 1000mA, and thrust is 4.5kg.
Working principle: spool adds guide portion, increases 5.6cm relative to the spool height 2.6cm of the PC-EPC electromagnetic proportional valve of existing little Song-7-8 hydraulic shovel system, makes spool work more stable; The difference in areas of the D portion ridge in cross-section of spool and the cross section of B portion fin significantly increases relative to the difference in areas at the corresponding position of the spool of the PC-EPC electromagnetic proportional valve of existing little Song-7-8 hydraulic shovel system, the reaction thrust of spool is strengthened, and spool action sensitivity significantly increases; Add compensating groove, make spool action more stable; The thrust of solenoid valve is set to 4.5kg/1000mA, thrust significantly increases relative to the PC-EPC electromagnetic proportional valve thrust 1.7kg/1000mA of existing little Song-7-8 hydraulic shovel system, make, when spool resistance is large, still movably to put in place, solve the problem of the easy clamping stagnation of original spool.
The beneficial effects of the utility model: the electromagnetic proportional valve structure-improved of the PC-EPC for excavator system of the present utility model, by the part of the guide portion that increases on spool and compensating groove, strengthen the difference in areas of the cross section of D portion ridge in cross-section and B portion fin, strengthen the improvement of the thrust of solenoid valve, electromagnetic proportional valve working stability, sensitivity increases greatly, solve the problem of original easily clamping stagnation, little Song-7-8 hydraulic shovel is occurred, and the regular problem of suppressing car and slow motion is solved.
Accompanying drawing explanation
Fig. 1 is the structure improved schematic diagram of electromagnetic proportional valve of the PC-EPC for excavator system of embodiment;
Wherein, 1-valve body, 2-spool, 3-solenoid valve, 21-compensating groove, 22-guide portion, 23-D portion fin, 24-B portion fin.
Embodiment
In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples, this embodiment, only for explaining the utility model, not forming protection domain of the present utility model and limiting.
Embodiment
Shown in composition graphs 1, for the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system, it comprises solenoid-operated proportional valve body; Described solenoid-operated proportional valve body comprises valve body 1 and spool 2; Described spool 2 is arranged in valve body 1, and the top of described spool 2 is provided with solenoid valve 3 for promoting spool 2; The neutral position of described spool 2 is provided with compensating groove 21; The bottom of described spool 2 is provided with guide portion 22; The middle and lower reaches position of described spool 2 is provided with D portion fin 23 and B portion fin 24; The area of the cross section of described D portion fin 23 is greater than the area of the cross section of B portion fin 24; The thrust of described solenoid valve 3 is 4.5kg/1000mA.
Working principle: spool 2 adds guide portion 22, increases 5.6cm relative to the spool height 2.6cm of the PC-EPC electromagnetic proportional valve of existing little Song-7-8 hydraulic shovel system, spool 2 is worked more stable; The difference in areas of D portion fin 23 cross section of spool 2 and the cross section of B portion fin 24 significantly increases relative to the difference in areas at the corresponding position of the spool of the PC-EPC electromagnetic proportional valve of existing little Song-7-8 hydraulic shovel system, the reaction thrust of spool 2 is strengthened, and spool 2 action sensitivity significantly increases; Add compensating groove 21, make spool 2 action more stable; The thrust of solenoid valve 3 is set to 4.5kg/1000mA, thrust significantly increases relative to the PC-EPC electromagnetic proportional valve thrust 1.7kg/1000mA of existing little Song-7-8 hydraulic shovel system, make, when spool 2 resistance is large, still movably to put in place, solve the problem of the easy clamping stagnation of original spool 2.
Above-described embodiment should not limit the utility model by any way, and the technological scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection domain of the present utility model.
Claims (2)
1. for the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system, it is characterized in that: it comprises solenoid-operated proportional valve body; Described solenoid-operated proportional valve body comprises valve body and spool; Described spool is arranged in valve body, and the top of described spool is provided with solenoid valve for promoting spool; The neutral position of described spool is provided with compensating groove; The bottom of described spool is provided with guide portion; The middle and lower reaches position of described spool is provided with D portion fin and B portion fin; The area of the cross section of described D portion fin is greater than the area of the cross section of B portion fin.
2. the electromagnetic proportional valve structure-improved of the PC-EPC for excavator system according to claim 1, is characterized in that: the thrust of described solenoid valve is 4.5kg/1000mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652237.3U CN204239810U (en) | 2014-11-03 | 2014-11-03 | For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652237.3U CN204239810U (en) | 2014-11-03 | 2014-11-03 | For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239810U true CN204239810U (en) | 2015-04-01 |
Family
ID=52769309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420652237.3U Expired - Lifetime CN204239810U (en) | 2014-11-03 | 2014-11-03 | For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468666A (en) * | 2018-04-13 | 2018-08-31 | 兰州理工大学 | A kind of anti-sticking hydraulic efficiency slide valve of resistant |
-
2014
- 2014-11-03 CN CN201420652237.3U patent/CN204239810U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468666A (en) * | 2018-04-13 | 2018-08-31 | 兰州理工大学 | A kind of anti-sticking hydraulic efficiency slide valve of resistant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101463846B (en) | A full hydraulic metal plate leveling machine hydraulic system | |
| CN204239810U (en) | For the electromagnetic proportional valve structure-improved of the PC-EPC of excavator system | |
| CN204164436U (en) | The one-way valve that a kind of anti-back flow is effective | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN202768534U (en) | Hydraulic cylinder of novel buffer device | |
| CN202603167U (en) | Electro-hydraulic control lifting mechanism | |
| CN204403009U (en) | A kind of simple gate frame oil circuit of the reach carrier-and-stacker without tilt function | |
| CN204312457U (en) | Oil recovery cylinder cushion device | |
| CN204238293U (en) | Excavator control crank assembly structure-improved | |
| CN203404144U (en) | Gradient-setting logic control valve | |
| CN204201169U (en) | Sponge bubbling machine special three-way is pneumatic draws valve | |
| CN203214944U (en) | Double-outlet reducing valve | |
| CN103821701B (en) | The built-in controlled repairing structure of a kind of hydraulic reciprocating diaphragm pump | |
| CN204403007U (en) | A kind of high three door frame oil circuits hoisted | |
| CN203442210U (en) | Valve element guiding structure of tee joint electric control valve | |
| CN203272305U (en) | Efficient hydraulic drive check valve | |
| CN204459310U (en) | Novel noise eliminating check valve | |
| CN204108476U (en) | A kind of punching type external tooth gear shaving machine | |
| CN204553840U (en) | A kind of pressure filter oil-leakage-prevention seal ring | |
| CN204213091U (en) | Trimmer valve spool | |
| CN201650920U (en) | Three-position oil cylinder | |
| CN203940049U (en) | A kind of liquid current control one-way valve | |
| CN203384381U (en) | Straight-flow multifunctional valve | |
| CN204569316U (en) | A kind of two-door frame oil circuit of the reach carrier-and-stacker without tilt function | |
| CN203309161U (en) | Double-gate distraction gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220118 Address after: 214000 No. 64, Xinfeng South Road, Xinjian Town, Yixing City, Wuxi City, Jiangsu Province Patentee after: Wuxi neitian Hydraulic Technology Co.,Ltd. Address before: Room 107-108, building 6, New Oriental Auto Parts City, no.1588, Chengbei West Road, Gusu District, Suzhou, Jiangsu 215000 Patentee before: SUZHOU NEITIAN HYDRAULIC MACHINERY TRADE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150401 |
|
| CX01 | Expiry of patent term |