CN101713422A - Electro-hydraulic digital gyrator - Google Patents
Electro-hydraulic digital gyrator Download PDFInfo
- Publication number
- CN101713422A CN101713422A CN200810155499A CN200810155499A CN101713422A CN 101713422 A CN101713422 A CN 101713422A CN 200810155499 A CN200810155499 A CN 200810155499A CN 200810155499 A CN200810155499 A CN 200810155499A CN 101713422 A CN101713422 A CN 101713422A
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- hydrovalve
- piston
- electro
- ball screw
- valve seat
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Abstract
The invention discloses an electro-hydraulic digital gyrator which comprises a motor, a coupler, an oil pump, an oil tank, an oil cylinder barrel, a piston rack assembly, a gear shaft, a hydraulic valve seat, a hydraulic valve core, an oil pipe, a motor seat, a stepping motor, a ball screw and a screw nut, wherein the oil pump, the hydraulic valve seat and the oil cylinder barrel form a closed loop through an oil pipe; a shaft of the stepping motor is connected with the hydraulic valve core; the ball screw is connected with the hydraulic valve core; the screw nut is connected with the piston rack assembly; and the surface of the ball screw is provided with threads, and the threads are meshed with the screw nut on the piston rack assembly. The invention has the advantages of high positioning precision, good sensitivity, high opening and closing speed, and convenient operation.
Description
Technical field
The present invention relates to angular displacement driving mechanism field, particularly relate to a kind of electro-hydraulic digital gyrator.Can realize a kind of novel angular displacement driving mechanism that Location accuracy is high, can be widely used in metallurgical equipment, power equipment, mining equiment, cement equipment, ship equipment etc. and make pinpoint rotating power source.
Background technique
Electro-hydraulic digital gyrator of the prior art, as Chinese patent, patent name: the electricity gyrator that surges, patent No. ZL:200320110641.X, a kind of electricity gyrator that surges is disclosed, comprise oil cylinder and piston, described piston and oil cylinder match to merge and are arranged in the oil cylinder, and two ends, the described oil cylinder left and right sides are respectively equipped with into, drainback passage, oil cylinder inner wall is provided with guiding groove, described piston is a tubular, the sealing of piston right-hand member, piston outer wall is provided with the guide pad that matches with guiding groove, and the inwall of piston is provided with screw thread, the piston left side is provided with screw axis, axial and the oil cylinder relative fixed of screw axis, the right-hand member of screw axis is a threaded stem, screw thread on the described threaded stem and the threaded engagement on the piston inner wall, the left end of screw axis is an output terminal, and described output terminal stretches out outside the oil cylinder from the oil cylinder left end.Its compact structure, not easy to wear, but its electricity surges gyrator exist that Location accuracy is not high, poor sensitivity, keying speed is slow, installation and maintenance are inconvenient shortcoming.
Summary of the invention
The purpose of invention is in order to overcome the shortcoming of prior art, and a kind of Location accuracy height, sensitivity is good, keying speed is fast, easy to operate electro-hydraulic digital gyrator are provided.
Electro-hydraulic digital gyrator technological scheme of the present invention is: electro-hydraulic digital gyrator, comprise motor, coupling, oil pump, fuel tank, cylinder tube, the piston-rack group, gear shaft, the hydrovalve valve seat, the hydrovalve spool, oil pipe, motor cabinet, described oil pump, hydrovalve valve seat and cylinder tube form loop by oil pipe, it also comprises stepper motor and ball screw and feed screw nut, the axle of described stepper motor is connected with the hydrovalve spool, described ball screw is connected with the hydrovalve spool, described feed screw nut links to each other with the piston-rack group, the surface of described ball screw is provided with screw thread, and it is meshed with feed screw nut on being located at described piston-rack group.
What described hydrovalve valve seat and hydrovalve spool were formed is four limit hydraulic control valves.
Described stepper motor is connected with the man-machine interface control system.
Electro-hydraulic digital gyrator of the present invention has adopted stepper motor and ball screw and feed screw nut, the axle of described stepper motor is connected with the spool of hydrovalve, described ball screw is connected with the spool of hydrovalve, and described feed screw nut links to each other with the piston-rack group; Stepper motor rotates, drive the hydrovalve valve core rotation, spool by hydrovalve drives the ball screw rotation again, work by the driven by motor oil pump simultaneously, pressure oil output enters oil cylinder, thereby drive the feed screw nut moving linearly that is installed on the piston-rack group, and the back lash between ball screw and feed screw nut very little (generally can ignore), so controlled the Location accuracy of piston-rack group effectively; Again because piston-rack group and gear shaft are accurate engagements, its back lash very little again (generally can ignore), thus controlled Location accuracy when gear shaft stops operating effectively, make it to reach 0.001 and spend.In the velocity range that hydraulic fluid flow rate allows, because stepper motor can be set multiple rotating speed and dwell time in rotation process, so in " angle value " scope that sets, can set multistage different " angular velocity " and " dwell time "; The output torque is big, can select for use arbitrarily between 0 to 300000NM; Electric control system is very simple, only needs a personal-machine interfacial level controller to get final product, and controlling unit is few, and rate of fault is very low, and is understandable, easy to operate; Also possess simultaneously Location accuracy height, sensitivity good, open and close fireballing advantage.
Description of drawings
Fig. 1 is an electro-hydraulic digital gyrator structural representation of the present invention.
Sequence number among the figure: 1, motor, 2, coupling, 3, oil pump, 4, fuel tank, 5, cylinder tube, 6, piston-rack group, 7, gear shaft, 8, ball screw, 9, feed screw nut, 10, the hydrovalve valve seat, 11, hydrovalve spool, 12, stepper motor, 13, oil pipe, 14 motor cabinets.
Embodiment
As shown in Figure 1, a kind of electro-hydraulic digital gyrator, comprise motor 1, coupling 2, oil pump 3, fuel tank 4, cylinder tube 5, piston-rack group 6, gear shaft 7, hydrovalve valve seat 10, hydrovalve spool 11, oil pipe 13, motor cabinet 14, the axle of described motor 1 is connected by shaft joint 2 with the axle of oil pump 3, described oil pump 3, hydrovalve valve seat 10 and cylinder tube 5 form loop by oil pipe 13, described gear shaft 7 is meshed with piston-rack group 6, described feed screw nut 9 links to each other with piston-rack group 6, described piston-rack group 6 is arranged in the cylinder tube 5, it also comprises stepper motor 12 and ball screw 8 and feed screw nut 9, the axle of described stepper motor 12 is connected with hydrovalve spool 11, described ball screw 8 is connected with hydrovalve spool 11, the surface of described ball screw 8 is provided with screw thread, it is meshed with the feed screw nut 9 that is located at 6 li of described piston-rack groups, what described hydrovalve valve seat 10 and hydrovalve spool 11 were formed is four limit hydraulic control valves, and described stepper motor 12 can be connected with the man-machine interface control system.Electro-hydraulic digital gyrator of the present invention has adopted stepper motor and ball screw and feed screw nut, controlled Location accuracy effectively, make it to reach 0.001 degree, and can in " angle value " scope that sets, set different " angular velocity " of multistage, also can reach the arbitrary position setting dwell time arbitrarily between " angular velocity "; The output torque is big, can select for use arbitrarily between 0 to 300000NM; Electric control system is very simple, only needs a personal-machine interfacial level controller to get final product, and controlling unit is few, and rate of fault is very low, and is understandable, easy to operate; Also possess simultaneously Location accuracy height, sensitivity good, open and close fireballing advantage.
Claims (3)
1. electro-hydraulic digital gyrator, comprise motor (1), coupling (2), oil pump (3), fuel tank (4), cylinder tube (5), piston-rack group (6), gear shaft (7), hydrovalve valve seat (10), hydrovalve spool (11), oil pipe (13), motor cabinet (14), described oil pump (3), hydrovalve valve seat (10) and cylinder tube (5) form loop by oil pipe (13), it is characterized in that: it also comprises stepper motor (12) and ball screw (8) and feed screw nut (9), the axle of described stepper motor (12) is connected with the hydrovalve spool (11) of hydrovalve valve seat (10) lining, described ball screw (8) is connected with hydrovalve spool (11) again, described feed screw nut (9) links to each other with piston-rack group (6), the surface of described ball screw (8) is provided with screw thread, and it is meshed with feed screw nut (9) on being located at described piston-rack group (6).
2. electro-hydraulic digital gyrator according to claim 1 is characterized in that: what described hydrovalve valve seat (10) and hydrovalve spool (11) were formed is four limit hydraulic control valves.
3. electro-hydraulic digital gyrator according to claim 1 and 2 is characterized in that: described stepper motor (12) is connected with the man-machine interface control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155499A CN101713422A (en) | 2008-10-07 | 2008-10-07 | Electro-hydraulic digital gyrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155499A CN101713422A (en) | 2008-10-07 | 2008-10-07 | Electro-hydraulic digital gyrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101713422A true CN101713422A (en) | 2010-05-26 |
Family
ID=42417326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810155499A Pending CN101713422A (en) | 2008-10-07 | 2008-10-07 | Electro-hydraulic digital gyrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101713422A (en) |
-
2008
- 2008-10-07 CN CN200810155499A patent/CN101713422A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100526 |