CN101451554A - Hydraulic pressure moving tube for steering outputting angular displacement and torque - Google Patents
Hydraulic pressure moving tube for steering outputting angular displacement and torque Download PDFInfo
- Publication number
- CN101451554A CN101451554A CNA2007101586424A CN200710158642A CN101451554A CN 101451554 A CN101451554 A CN 101451554A CN A2007101586424 A CNA2007101586424 A CN A2007101586424A CN 200710158642 A CN200710158642 A CN 200710158642A CN 101451554 A CN101451554 A CN 101451554A
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- leading screw
- angle displacement
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Abstract
The present invention provides a hydraulic pressure actuator cylinder that can veer to output angle displacement and torquemoment which includes barrel 1 and piston 2, and characterized in that the barrel 1 has no pole cavity and has a shell 8 outside; a screw 4 is mounted inside the first hole of piston 2 of case 8; screw 4 engaged with jugged shape of pole of piston 2 fixedly; a pair of bearings 5 are mounted inside the case 8 which supports leading screw 3; the leading screw 3 is connected to transmission device 6 to veer to output angle displacement and torquemoment. The hydraulic pressure actuator cylinder that can veer to output angle displacement and torquemoment provided in the invention has the following advantages: no sealing devices added; structure simple; convert straight-line displacement of piston inside the barrel to angular displacement and veer to output torque.
Description
Technical field
The present invention relates to hydraulic actuator.
Background technique
Traditional hydraulic actuation barrel structure generally is made up of cylindrical shell and piston, two chambeies about piston is divided into the pressurized strut cylindrical shell.During work, piston is move left and right under the pressure effect of hydraulic oil, and piston turns to the output straight-line displacement, thereby the power that the pressure of hydraulic oil is converted into pressurized strut is turned to output by piston.The pressurized strut piston can only be exported straight-line displacement and power.
Summary of the invention
The object of the present invention is to provide a kind of novel hydraulic pressurized strut structure, can make its piston can not only export straight-line displacement and power, can also turn to angle displacement and moment of torsion, more be applicable to control system.
The invention provides a kind of hydraulic actuator that turns to angle displacement and moment of torsion, comprise cylindrical shell 1 and piston 2, it is characterized in that: cylindrical shell 1 rodless cavity has housing 8 outward, in 2 endoporus of 8 li pistons of housing screw 4 is installed, screw 4 is meshed with the profile of tooth of piston 2 bars and is fixed together, pair of bearings 5 is housed in housing 8, and it is supporting leading screw 3, and leading screw 3 is connected with transmission device 6 and turns to angle displacement and moment of torsion.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, its transmission device 6 can be the umbrella gear pair.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, its transmission device 6 can be a worm couple, worm gear and leading screw 3 are fixed together.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, the tooth form of its leading screw 3 can be trapezoidal thread.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, the number of starts of its leading screw 3 can be 1～6.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, the number of starts of the worm screw of its transmission device 6 can be 1～6.
The hydraulic actuator that turns to angle displacement and moment of torsion provided by the invention, its advantage is: do not increase seal arrangement, simple in structure, the straight-line displacement of the piston in the cylindrical shell is converted to angular displacement, and turns to output torque simultaneously.
Description of drawings
Fig. 1 is the structural representation of the hydraulic actuator of worm couple angle displacement and moment of torsion;
Fig. 2 is the structural representation of the hydraulic actuator of secondary angle displacement of umbrella gear and moment of torsion.
Embodiment
Embodiment 1
A kind of novel hydraulic pressurized strut, its structure as shown in Figure 1, its cylindrical shell 1 inner chamber has been divided into rod chamber and rodless cavity by piston 2, under normal circumstances rod chamber pressure is higher than rodless cavity pressure.Be processed with the two seals groove on 2 in piston, an O-ring seal is housed in each groove, two fluoroplastic back-up rings are so that the sealing of left and right two chambeies.In 2 endoporus of piston screw 4 is installed, screw 4 is meshed with the profile of tooth of piston 2 bars and is fixed together with nut, makes it can not relatively rotate.
A pair of radial thrust bearing 5 is housed in housing 8, and it is supporting leading screw 3, and leading screw 3 can rotatablely move freely around axis, and can not do moving of axial direction.Be processed with keyway at leading screw 3 left ends, be used for installing woodruff key, the worm gear of transmission device 6 and leading screw 3 are fixed together and transmitting torque.When assembling, leading screw 3 is screwed in the screw 4, and leading screw 3 is meshed with screw 4 and has formed a pair of transmission.Because screw 4 is to be fixed in 2 in the piston, so when piston 2 initiatively moves as axial direction, and leading screw 3 inevitable being with by screw 4 are rotated; Otherwise when leading screw 3 initiatively rotated, then leading screw 3 must be with piston 2 to move axially.The tooth form of leading screw 3 is a trapezoidal thread, has big lead angle, and number of starts is 4, therefore this to transmission in, when piston 2 initiatively moves axially, can transmit bigger asynchronous power between leading screw 3, the screw 4, and higher transmission efficiency is arranged.
Worm gear is meshed with worm screw and forms a pair of transmission, and the displacement amount of the relative worm axis of worm gear central plane is adjusted with packing ring.Worm screw both can be driving link and had driven the worm gear rotation during work, also can be Passive part and its rotation by the worm gear band.Because worm screw has been selected 5 statures, lead angle is up to 24 °, and the worm gear number of teeth is 25, and its velocity ratio is 5, therefore high transmission efficiency is arranged in this a pair of kinematic pair and locking phenomenon can not occur.
Embodiment 2
A kind of novel hydraulic pressurized strut, its structure as shown in Figure 2, its cylindrical shell 1 inner chamber has been divided into rod chamber and rodless cavity by piston 2, under normal circumstances rod chamber pressure is higher than rodless cavity pressure.Be processed with the two seals groove on 2 in piston, an O-ring seal is housed in each groove, two fluoroplastic back-up rings are so that the sealing of left and right two chambeies.In 2 endoporus of piston screw 4 is installed, screw 4 is meshed with the profile of tooth of piston 2 bars and is fixed together with nut, makes it can not relatively rotate.
A pair of radial thrust bearing 5 is housed in housing 8, and it is supporting leading screw 3, and leading screw 3 can rotatablely move freely around axis, and can not do moving of axial direction.Be processed with keyway at leading screw 3 left ends, be used for installing woodruff key, the driving bevel gear of transmission device 6 and leading screw 3 are fixed together and transmitting torque.When assembling, leading screw 3 is screwed in the screw 4, and leading screw 3 is meshed with screw 4 and has formed a pair of transmission.Because screw 4 is to be fixed in 2 in the piston, so when piston 2 initiatively moves as axial direction, and leading screw 3 inevitable being with by screw 4 are rotated; Otherwise when leading screw 3 initiatively rotated, then leading screw 3 must be with piston 2 to move axially.The tooth form of leading screw 3 is a trapezoidal thread, has big lead angle, and number of starts is 4, therefore this to transmission in, when piston 2 initiatively moves axially, can transmit bigger asynchronous power between leading screw 3, the screw 4, and higher transmission efficiency is arranged.
Claims (9)
1, a kind of hydraulic actuator that turns to angle displacement and moment of torsion, comprise cylindrical shell (1) and piston (2), it is characterized in that: cylindrical shell (1) rodless cavity has housing (8) outward, in housing (8) lining piston (2) endoporus screw (4) is installed, screw (4) is meshed with the profile of tooth of piston (2) bar and is fixed together, pair of bearings (5) is housed in housing (8), and it is supporting leading screw (3), and leading screw (3) is connected with transmission device (6).
2, according to the described hydraulic actuator that turns to angle displacement and moment of torsion of claim 1, it is characterized in that: described transmission device (6) is the umbrella gear pair.
3, according to the described hydraulic actuator that turns to angle displacement and moment of torsion of claim 1, it is characterized in that: described transmission device (6) is a worm couple, and worm gear and leading screw (3) are fixed together.
4, according to claim 1 or the 2 described hydraulic actuators that turn to angle displacement and moment of torsion, it is characterized in that: the tooth form of described leading screw (3) is a trapezoidal thread.
5, according to the described hydraulic actuator that turns to angle displacement and moment of torsion of claim 3, it is characterized in that: the tooth form of described leading screw (3) is a trapezoidal thread.
6, according to claim 1 or the 2 described hydraulic actuators that turn to angle displacement and moment of torsion, it is characterized in that: the number of starts of described leading screw (3) is 1～6.
7, according to claim 3 or the 5 described hydraulic actuators that turn to angle displacement and moment of torsion, it is characterized in that: the number of starts of described leading screw (3) is 1～6.
8, according to claim 3 or the 5 described hydraulic actuators that turn to angle displacement and moment of torsion, it is characterized in that: the number of starts of the worm screw of described transmission device (6) is 1～6.
9, according to the described hydraulic actuator that turns to angle displacement and moment of torsion of claim 7, it is characterized in that: the number of starts of the worm screw of described transmission device (6) is 1～6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101586424A CN101451554A (en) | 2007-11-30 | 2007-11-30 | Hydraulic pressure moving tube for steering outputting angular displacement and torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101586424A CN101451554A (en) | 2007-11-30 | 2007-11-30 | Hydraulic pressure moving tube for steering outputting angular displacement and torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451554A true CN101451554A (en) | 2009-06-10 |
Family
ID=40733977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101586424A Pending CN101451554A (en) | 2007-11-30 | 2007-11-30 | Hydraulic pressure moving tube for steering outputting angular displacement and torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451554A (en) |
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2007
- 2007-11-30 CN CNA2007101586424A patent/CN101451554A/en active Pending
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Open date: 20090610 |