CN2895835Y - Four-edge control valve suitable to digital oil tank or digital oil-motor - Google Patents
Four-edge control valve suitable to digital oil tank or digital oil-motor Download PDFInfo
- Publication number
- CN2895835Y CN2895835Y CN 200620103005 CN200620103005U CN2895835Y CN 2895835 Y CN2895835 Y CN 2895835Y CN 200620103005 CN200620103005 CN 200620103005 CN 200620103005 U CN200620103005 U CN 200620103005U CN 2895835 Y CN2895835 Y CN 2895835Y
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- CN
- China
- Prior art keywords
- spool
- digital oil
- digital
- motor
- joint
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- Expired - Lifetime
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Abstract
The utility model discloses a four-edge control valve suitable to digital oil tank or digital oil motor, is mainly characterized in that the right end of the spool(6)is provided with an inclined surface(M), the inclined surface contact with the external circle of the micro-ball bearing(3)at the rotating center side of the bearing bracket(2)of the stepping motor(1), the left end of the spool(6)is provided with a transversal key(N),which is arranged in the joint(8) with a cross groove, can be moved in the cross groove of the joint(8), four control edges are arranged on the spool(6). As the utility model arranges a joint with the cross groove, can effectively resolve the different concentric issue between the ball screw or digital oil motor rear axle extension and spool assembly , can not produce the screw and spool to increase the torque or the seizure of the screw and spool phenomenon. Four control edges on the spool guarantee the technology and scalability of the four control edges absolute zero open, enhance the control precision of the digital oil tank or digital oil motor, four complete bus reduce the spool movement resistance, only a quarter of the ordinary spool, has a significant effect in enhancing the accuracy and reducing the axial resistance.
Description
Technical field: the utility model relates to a kind of improvement invention of four-edge control valve, particularly a kind of invention that is applicable to the four-edge control valve of digital oil cylinder or digital oil motor.
Background technique: the four-edge control valve that the digital hydraulic oil cylinder of prior art or digital hydraulic oil motor are adopted, mostly be ball screw and valve body is one-piece type, be difficult for adopting general commercial ball screw, this had both strengthened manufacture difficulty and cost, also can make the piston rod and the control valve spool decentraction that places the oil cylinder bonnet of digital oil cylinder, add the torque of big wire role and spool or stuck phenomenon occurs.The valve body of existing four-edge control valve has four or five undercut grooves more, and the ring-like opening shoulder type of the also many employings of spool makes the precision on four control limits be difficult to reach zero aperture, does not reach control accuracy.
Summary of the invention: in view of the existing problem of present known technology, technical problem to be solved in the utility model provides a kind of four-edge control valve that is applicable to digital oil cylinder, digital oil motor, both solved the problem that the nonconcentricity of screw mandrel and spool is brought, ensured that again spool and valve pocket are zero aperture, easy processing reduces cost.To achieve these goals, the utility model adopts following technological scheme to realize: this control valve has valve body, be installed in the spool in the valve body, the left end of described spool connects digital oil cylinder or digital oil motor, right-hand member connects the rotating shaft of stepper motor, described valve body is provided with turnover oilhole and oil pocket, it is characterized in that in the described valve body valve pocket being installed, described valve pocket is provided with P, T, A, the B square aperture, and communicate with the oilhole that is connected on the valve body, described spool is installed in the valve pocket, the right-hand member of described spool has an inclined-plane M, the machine shaft of described stepper motor is provided with bearing bracket, miniature radial ball bearing is equipped with in the rotating center side of described bearing bracket, the cylindrical of described miniature radial ball bearing contacts with spool inclined-plane M, the left end of described spool has horizontal key N, this horizontal key N places to have in the cross recessed joint, can in the cross recess of joint, move, described joint periphery is equipped with pressure spring, the other end of described joint is connected with screw mandrel, the nut of described screw mandrel is connected with the piston of digital oil cylinder or an end of described joint is connected with the rotating shaft of digital oil motor, and described spool is provided with four control limits.Four control limits on the described spool are quadrilateral on the cross section of spool, these quadrilateral two diagonal remain with four complete buses.Described valve pocket and spool cylinder surface of contact are complete cylindrical bodys.Two thrust-bearings are installed on the described screw mandrel.
The utility model compared with prior art, reasonable in design, novel structure, make simple, the utility model is provided with owing to have the cross recessed joint, effectively solved the decentraction problem that shaft extension and spool fit on occur behind ball screw or the digital oil motor, screw mandrel and spool can not occur and strengthen torque or stuck phenomenon occurs.By forward and reverse rotation of stepper motor, can change the position of miniature radial ball bearing on spool inclined-plane M, make spool axial displacement, and make pressure oil enter the A chamber or the B chamber of oil cylinder respectively.Pressure spring can guarantee that then spool follows the tracks of the rotation of radial bearing in the axial direction.Numeral oil cylinder rear end cover or digital oil motor rear end cover flange connecting are applied in and are digital oil cylinder rear end cover on the digital hydraulic oil cylinder, are applied in the flange that then connects with valve body for digital oil motor bonnet on the digital oil motor.Valve pocket is the borehole structure of undercut groove in not having, and four control of spool limit is the structure of cutting four inclined-planes on the cylindrical body.And four inclined-planes of the square aperture of valve pocket and spool process simultaneously, and four inclined-planes form four control limits on spool, and four control limits on the spool are quadrilateral on the cross section of spool, and these quadrilateral two diagonal form four complete buses; This structure has ensured the manufacturability and the measurability of four control limit absolute zero apertures, improved the control accuracy of digital oil cylinder and digital oil motor, article four, complete bus, reduced the resistance to motion of spool, have only 1/4th of common spool, have remarkable efficacy aspect raising precision and the minimizing axial resistance.The utility model compared with prior art has substantive distinguishing features and progress.
Description of drawings: the utility model has following accompanying drawing:
Fig. 1 forms digital hydraulic jack structural representation for the utility model four-edge control valve and digital hydraulic oil cylinder;
Fig. 2 forms digital hydraulic oil motor structural representation for the utility model four-edge control valve and oil hydraulic motor;
Fig. 3 is the partial section of the utility model spool and valve pocket combination;
Fig. 4 is provided with the bearing bracket partial section of miniature radial ball bearing for the utility model.
Embodiment: accompanying drawing has been represented structure of the present utility model and embodiment, further describes the relevant details and the working principle of embodiment below more in conjunction with the accompanying drawings.This control valve has valve body 4, be installed in the spool 6 in the valve body 4, the left end of described spool 6 connects digital oil cylinder or digital oil motor, right-hand member connects the rotating shaft of stepper motor 1, stepper motor 1 usefulness motor flange 12 is combined into one with valve body 4, in the described valve body 4 valve pocket 5 is installed, described spool 6 is installed in the valve pocket 5, the right-hand member of described spool 6 has an inclined-plane M, the machine shaft of described stepper motor 1 is provided with bearing bracket 2, miniature radial ball bearing 3 is equipped with in the rotating center side of described bearing bracket 2, the cylindrical of described miniature radial ball bearing 3 contacts with spool inclined-plane M, and the left end of described spool 6 has horizontal key N, and this horizontal key N places to have in the cross recessed joint 8, can move in the cross recess of joint 8, described joint 8 peripheries are equipped with pressure spring 7.One end of cross-groove joint 8 connects with an end of screw mandrel 10, and two thrust-bearings 9 are installed on the screw mandrel, the nut of described screw mandrel 10 with just form digital hydraulic jack after digital hydraulic cylinder piston connects; And described cross-groove joint 8 has then just been formed digital digital hydraulic oil motor with after oil motor rear end running shaft connects, because oil motor does not have screw mandrel, does not therefore also just establish thrust-bearing.The square oilhole of P, T, A, B on the described valve pocket 5, this opening is an oilhole, P, T, A, B are the oil pockets of joining of the common composition of spool valve pocket, and communicate with the oilhole that is connected on the valve body 4, described spool 6 is provided with four control limits, four control limits on the described spool 6 are quadrilateral on the cross section of spool, these quadrilateral two diagonal form four complete buses.Described valve pocket 5 and spool 6 cylinder surface of contact are complete cylindrical bodys, rather than cut the hole of undercut groove and shoulder sliding valve structure like the clearance groov is arranged.During the work of the utility model digital hydraulic oil cylinder: forward and reverse rotation of stepper motor 1, can change the position of miniature radial ball bearing 3 on the inclined-plane of spool 6 M, this just can make spool 6 axial displacements.At this moment, high pressure oil can enter the A chamber or the B chamber of digital oil cylinder, and piston is done axial displacement together with the ball screw nut that is installed on the piston and since ball screw 10 1 ends with two thrust ball bearings 9 with its axial restraint.The axial displacement of nut can make ball screw 10 drive spools 6 rotations, and the inclined-plane M of spool 6 can follow the tracks of the motion of radial ball bearing 3 and close port all the time, reaches zero aperture and stops.Finish the direction of piston on straight line motion, the digital control and position machine feedback of speed with this.Digital oil motor is by aforementioned process among the figure two, and then high pressure oil can change the turnover oil direction of digital oil motor and the digital control and position machine feedback of flow or zero lap (stopping).
During the work of the utility model digital hydraulic oil motor: process is identical with the front, then high pressure oil can change the oil inlet and outlet of digital oil motor, make digital oil motor positive rotation or despining, the rotation of numeral oil motor rear axle, the inclined-plane M that can make screw mandrel 10 drive spool 6 also axial displacements of rotation, spool 6 follows the tracks of the motion of radial ball bearing 3, close port reaches zero aperture and digital oil motor is stopped operating.Constitute the digital control and machine feedback of digital oil motor direction, rotating speed, corner, halt with this.
Claims (4)
1, a kind of four-edge control valve that is applicable to digital oil cylinder or digital oil motor, this control valve has valve body (4), be installed in the spool (6) in the valve body (4), the left end of described spool (6) connects digital oil cylinder or digital oil motor, right-hand member connects the rotating shaft of stepper motor (1), described valve body is provided with turnover oilhole and oil pocket, it is characterized in that being equipped with in the described valve body (4) valve pocket (5), described spool (6) is installed in the valve pocket (5), the right-hand member of described spool (6) has an inclined-plane (M), the machine shaft of described stepper motor (1) is provided with bearing bracket (2), miniature radial ball bearing (3) is equipped with in the rotating center side of described bearing bracket (2), the cylindrical of described miniature radial ball bearing (3) contacts with spool inclined-plane (M), the left end of described spool (6) has horizontal key (N), this horizontal key (N) places to have in the cross recessed joint (8), can in the cross recess of joint (8), move, described joint (8) periphery is equipped with pressure spring (7), the other end of described joint (8) is connected with screw mandrel (10), the nut of described screw mandrel (10) is connected with the piston of digital oil cylinder or an end of described joint (8) is connected with the rotating shaft of digital oil motor, and described spool (6) is provided with four control limits.
2, a kind of four-edge control valve that is applicable to digital oil cylinder or digital oil motor as claimed in claim 1, it is characterized in that four control limits on the described spool (6) are quadrilateral on the cross section of spool, these quadrilateral two diagonal remain with four complete buses.
3, a kind of four-edge control valve that is applicable to digital oil cylinder or digital oil motor as claimed in claim 1 is characterized in that described valve pocket (5) and spool (6) cylinder surface of contact are complete cylindrical bodys.
4, a kind of four-edge control valve that is applicable to digital oil cylinder or digital oil motor as claimed in claim 1 is characterized in that being equipped with on the described screw mandrel (10) two thrust-bearings (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103005 CN2895835Y (en) | 2006-04-21 | 2006-04-21 | Four-edge control valve suitable to digital oil tank or digital oil-motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103005 CN2895835Y (en) | 2006-04-21 | 2006-04-21 | Four-edge control valve suitable to digital oil tank or digital oil-motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2895835Y true CN2895835Y (en) | 2007-05-02 |
Family
ID=38065411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620103005 Expired - Lifetime CN2895835Y (en) | 2006-04-21 | 2006-04-21 | Four-edge control valve suitable to digital oil tank or digital oil-motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2895835Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370150C (en) * | 2006-04-21 | 2008-02-20 | 孙勇 | Four-edge control valve adaptable for digital oil cylinder or digital oil motor |
| CN102588369A (en) * | 2012-02-23 | 2012-07-18 | 江正庆 | Numerical control hydraulic control unit |
| CN111373183A (en) * | 2018-01-12 | 2020-07-03 | 川崎重工业株式会社 | Slide valve |
-
2006
- 2006-04-21 CN CN 200620103005 patent/CN2895835Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370150C (en) * | 2006-04-21 | 2008-02-20 | 孙勇 | Four-edge control valve adaptable for digital oil cylinder or digital oil motor |
| CN102588369A (en) * | 2012-02-23 | 2012-07-18 | 江正庆 | Numerical control hydraulic control unit |
| CN102588369B (en) * | 2012-02-23 | 2014-11-26 | 江正庆 | Numerical control hydraulic control unit |
| CN111373183A (en) * | 2018-01-12 | 2020-07-03 | 川崎重工业株式会社 | Slide valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080220 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |