CN208634127U - A kind of step asymmetrical type list jackscrew structure valve rod flow regulator - Google Patents
A kind of step asymmetrical type list jackscrew structure valve rod flow regulator Download PDFInfo
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- CN208634127U CN208634127U CN201821332005.4U CN201821332005U CN208634127U CN 208634127 U CN208634127 U CN 208634127U CN 201821332005 U CN201821332005 U CN 201821332005U CN 208634127 U CN208634127 U CN 208634127U
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- valve rod
- jackscrew
- connecting shaft
- type groove
- rod connecting
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Abstract
The utility model announces a kind of step asymmetrical type list jackscrew structure valve rod flow regulator, belongs to hydraulic valve technology.Including end cap and valve rod connecting shaft, valve rod connecting shaft inner end is located in end cap, and valve rod connecting shaft outer end is connect with valve rod；The side of valve rod connecting shaft inner end is provided with a step waist type groove；It is connected through a screw thread in the end cap and jackscrew is installed；The inner end of the jackscrew is located in step waist type groove.The utility model can realize that the equivalent of flow is adjusted using the step waist type groove structure of asymmetrical type, and valve rod travel endpoint flow is equal；It can also realize that the difference of determining of flow adjusts (while tuning up or turning down simultaneously), realize that fine tuning, middle reconciliation are adjusted greatly according to the size of flow difference；It is appeared on the stage the cooperation of stepwise waist type groove inner wall by the side of jackscrew and valve rod connecting shaft, has evaded the rotary motion of hydraulic power effect lower valve rod, reduced the probability of valve rod clamping stagnation, is i.e. the utility model has anti-valve rod rotation function.
Description
Technical field
The utility model relates to hydraulic valve technology, specifically a kind of step asymmetrical type list jackscrew structure valve rod flow
Regulating device.
Background technique
To A, B of the executing agencies such as the left and right speed of travel and left and right revolution revolving speed in engineering machinery tracked hydraulic system
Mouth flow has strict requirements；Because casting, manufacture or assembly equal error can cause A, B mouthfuls of flows to have differentiation.
Prior art work discloses a kind of position limiting structure (CN205260872U) of valve rod, valve stem spacing structure, including valve
Body, valve rod, bearing, end cap bearing set and penetrate in valve body on valve rod, and body base is by end cap seal and solid by bolt
Fixed, limit pad is fixedly mounted by screw in valve rod tail portion, and adjusting pad is equipped between limit pad and end cap, and limit pad is supported with bearing
It connects, carries out axial limiting.
Wherein have the disadvantage that
Valve stem spacing structure, part is more, and assembly is cumbersome, at high cost, is unfavorable for structure and simplifies；
Valve stem spacing structure, has a single function, and is only capable of the range of limitation valve rod, does not have the function of flow adjusting；?
It is exactly not have the regulatory function to A, B mouthfuls of flows of hydraulic valve；
Valve stem spacing structure does not have rotation preventing function, and the clamping stagnation of spool is easy to cause under high pressure, the operating condition of big flow.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of step asymmetrical type list jackscrew structure valve rod flow tune
Regulating device.
The utility model is realized by technical solution once: a kind of step asymmetrical type list jackscrew structure valve rod flow adjusting
Device, including end cap and valve rod connecting shaft, valve rod connecting shaft inner end are located in end cap, and valve rod connecting shaft outer end is connect with valve rod；
The side of valve rod connecting shaft inner end is provided with a step waist type groove；It is connected through a screw thread in the end cap and top is installed
Silk；The inner end of the jackscrew is located in step waist type groove.
It is further: the step waist type groove is the waist type groove of three-stage type short in foreign minister；In step waist type groove
Outermost step and most inner side step, with the center line of intermediate step in step waist type groove or so asymmetric arrangement.
The bottom of step waist type groove in the valve rod connecting shaft be connected to step waist type groove to side.
The valve rod connecting shaft is the small second order Step Shaft of outer diameter, and valve rod connecting shaft outer end is provided with external screw thread；
Valve rod connecting shaft outer end is connected through a screw thread to be connect with valve rod；The front and back side milling of valve rod connecting shaft inner end has opposite plane.
The jackscrew outer end is provided with external screw thread, and jackscrew outer end, which is connected through a screw thread, to be mounted on end cap；Jackscrew inner end is one
A hemisphere, jackscrew are mutually perpendicular to valve rod connecting shaft, and jackscrew inner end and step waist type groove front-rear side walls are small―gap suture cooperations.
Compared with prior art, the utility model has the beneficial effects that
It can realize that the equivalent of flow is adjusted using the step waist type groove structure of asymmetrical type, and valve rod travel endpoint flow
It is equal；It can also realize that the difference of determining of flow adjusts (while tuning up or turning down simultaneously), be realized according to the size of flow difference micro-
It adjusts, the big tune of middle reconciliation；
It is appeared on the stage the cooperation of stepwise waist type groove inner wall, has been evaded under hydraulic power effect by the side of jackscrew and valve rod connecting shaft
The rotary motion of valve rod reduces the probability of valve rod clamping stagnation, i.e. the utility model has anti-valve rod rotation function.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is valve rod connecting axle structure schematic diagram；
Fig. 3 is jackscrew structural schematic diagram；
In figure: 1, end cap；2, valve rod connecting shaft；2-1, step waist type groove；3, jackscrew.
Specific embodiment
It is a specific embodiment of the utility model below, the utility model is described further now in conjunction with attached drawing.
The utility model is for engineering machinery large-tonnage, the left and right walking sideslip in super-tonnage crawler-type hydraulic system, front and back speed
Spend not equal and proposition the solution of the inconsistent and left and right revolving speed of revolution；The utility model is also applied for A, B mouthfuls of flows of hydraulic valve
Difference has in the hydraulic system of quantitative requirement；Meanwhile to can also be applied to the high pressure of other industry, high-volume hydraulic same for the utility model
Step controls and has in the hydraulic control system of quantitative requirement to A, B mouthfuls of flow differences.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of step asymmetrical type list jackscrew structure valve rod flow regulator, including end cap 1
With valve rod connecting shaft 2,2 inner end of valve rod connecting shaft is located in end cap 1, and 2 outer end of valve rod connecting shaft is connect with valve rod.
Valve rod connecting shaft 2 is the small second order Step Shaft of outer diameter, and 2 outer end of valve rod connecting shaft is provided with external screw thread；Valve rod connects
External screw thread in spindle 2 makes it form reliable connection with valve rod.The front and back side milling of 2 inner end of valve rod connecting shaft has opposite put down
Face.A step waist type groove 2-1 is provided on the upside of 2 inner end of valve rod connecting shaft, specific: step waist type groove 2-1 is foreign minister
The waist type groove of interior short three-stage type；Outermost step and most inner side step in step waist type groove 2-1, with step waist type groove
Center line of intermediate step in 2-1 or so asymmetric arrangement.The bottom of step waist type groove 2-1 is connected to valve rod connecting shaft 2
On downside.
3 outer end of jackscrew is provided with external screw thread, and 3 outer end of jackscrew, which is connected through a screw thread, to be mounted on end cap 1；3 inner end of jackscrew is one
A hemisphere, the inner end of jackscrew 3 are located in step waist type groove 2-1；Jackscrew 3 is mutually perpendicular to valve rod connecting shaft 2, in jackscrew 3
End is small―gap suture cooperation with step waist type groove 2-1 front-rear side walls.
When use:
When jackscrew 3 is in position shown in Fig. 1, i.e., when jackscrew 3 is in intermediate symmetry stepped locations, the left and right stroke phase of valve rod
Unanimously, A, B mouthfuls of flows are equal；
When jackscrew 3 moves outwardly at the asymmetric step in outside, A, B mouthfuls of flows of hydraulic valve increase simultaneously, and valve rod is maximum
At end point of travel, A, B mouthfuls of flows are differed；
Conversely, A, B mouthfuls of flows of hydraulic valve reduce simultaneously, and valve rod when jackscrew 3 moves inwardly at adjacent asymmetric step
At range endpoint, A, B mouthfuls of flows are differed；
By above-mentioned 3 adjustment process of jackscrew, it can effectively realize that the flow of hydraulic valve A, B hydraulic fluid port is adjusted, but A, B mouthfuls of difference in flow
For definite value, meet the requirements its flow difference.
The utility model is appeared on the stage the cooperation of stepwise waist type groove inner wall by single jackscrew structure and valve rod connecting shaft, is effectively ensured
The rotary motion of valve rod radial direction occurs without being acted on by hydraulic power axially movable for valve rod, can effectively prevent the rotation of valve rod
Turn；The radial arrangement of jackscrew, is conducive to the stress of jackscrew and the axial movement of valve rod, improves the service life of jackscrew and hydraulic valve；Together
When, by adjusting the cooperation of jackscrew and valve rod connecting shaft difference step surface, the two-way travel of valve rod can be effectively controlled, realize to liquid
Equivalent control and the constant flow difference of pressure valve A, B mouthful flow control.I.e. the utility model provides not only a kind of valve rod Flow Limit
Position device, and evaded influence of the hydraulic power to valve rod under high pressure, big flow, improve the stability and flow essence of liquid stream
Degree, has prevented rotation of the valve rod due to effect of hydraulic power in spool bore, has reduced the risk of spool clamping stagnation.
Claims (5)
1. a kind of step asymmetrical type list jackscrew structure valve rod flow regulator, including end cap (1) and valve rod connecting shaft (2),
Valve rod connecting shaft (2) inner end is located in end cap (1), and valve rod connecting shaft (2) outer end is connect with valve rod；It is characterized by: the valve
The side of bar connecting shaft (2) inner end is provided with a step waist type groove (2-1)；Installation is connected through a screw thread in the end cap (1)
There are jackscrew (3)；The inner end of the jackscrew (3) is located in step waist type groove (2-1).
2. a kind of step asymmetrical type list jackscrew structure valve rod flow regulator according to claim 1, feature exist
In: the step waist type groove (2-1) is the waist type groove of three-stage type short in foreign minister；It is outermost in step waist type groove (2-1)
Side stage rank and most inner side step, with the center line of intermediate step in step waist type groove (2-1) or so asymmetric arrangement.
3. a kind of step asymmetrical type list jackscrew structure valve rod flow regulator according to claim 1, feature exist
In: the bottom of the step waist type groove (2-1) on the valve rod connecting shaft (2) is connected to the opposite side of step waist type groove (2-1)
Face.
4. a kind of step asymmetrical type list jackscrew structure valve rod flow regulator according to claim 1, feature exist
In: the valve rod connecting shaft (2) is the small second order Step Shaft of outer diameter, and valve rod connecting shaft (2) outer end is provided with external screw thread；Valve rod
Connecting shaft (2) outer end is connected through a screw thread to be connect with valve rod；The front and back side milling of valve rod connecting shaft (2) inner end has opposite plane.
5. a kind of step asymmetrical type list jackscrew structure valve rod flow regulator according to claim 1, feature exist
In: jackscrew (3) outer end is provided with external screw thread, and jackscrew (3) outer end, which is connected through a screw thread, to be mounted on end cap (1)；In jackscrew (3)
End is a hemisphere, and jackscrew (3) is mutually perpendicular to valve rod connecting shaft (2), jackscrew (3) inner end and step waist type groove (2-1)
Front-rear side walls are small―gap suture cooperations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821332005.4U CN208634127U (en) | 2018-08-17 | 2018-08-17 | A kind of step asymmetrical type list jackscrew structure valve rod flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821332005.4U CN208634127U (en) | 2018-08-17 | 2018-08-17 | A kind of step asymmetrical type list jackscrew structure valve rod flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634127U true CN208634127U (en) | 2019-03-22 |
Family
ID=65741617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821332005.4U Active CN208634127U (en) | 2018-08-17 | 2018-08-17 | A kind of step asymmetrical type list jackscrew structure valve rod flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634127U (en) |
-
2018
- 2018-08-17 CN CN201821332005.4U patent/CN208634127U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210511 Address after: 221004 No.18 Taoshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Amakai Hydraulic Technology Co.,Ltd. Address before: 221004 No.18, Taoshan Road, Jinshanqiao Development Zone, Xuzhou City, Jiangsu Province Patentee before: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. |
|
| TR01 | Transfer of patent right |