CN204327868U - Planar double-enveloping wormwheel auxiliary driving electric actuator - Google Patents
Planar double-enveloping wormwheel auxiliary driving electric actuator Download PDFInfo
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- CN204327868U CN204327868U CN201420758343.XU CN201420758343U CN204327868U CN 204327868 U CN204327868 U CN 204327868U CN 201420758343 U CN201420758343 U CN 201420758343U CN 204327868 U CN204327868 U CN 204327868U
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Abstract
The utility model relates to a kind of planar double-enveloping wormwheel auxiliary driving electric actuator, comprise housing, valve stem connection, wheel hub, worm gear edge, worm screw, end cap and bearing, valve stem connection is arranged in housing, valve stem connection is fixedly connected with wheel hub one end, the wheel hub the other end is connected with worm gear edge is detachable, worm gear edge and worm meshing, worm screw two ends are bearing in the endoporus of housing side by bearing, and it is axially fixed by the end cap be connected on housing.Planar double-enveloping wormwheel auxiliary driving electric actuator of the present utility model, multiple toothly engages simultaneously, and the advantages such as transmission efficiency is high, bearing capacity is strong, long service life, this greatly reduces the requirement to power source electric actuator.
Description
Technical field
The utility model relates to worm type of reduction gearing technical field, especially a kind of planar double-enveloping wormwheel auxiliary driving electric actuator.
Background technique
Along with the extensive use of the process control class devices such as valve, air door, baffle door, require also more and more higher to the actuator of the devices such as control valve, air door, baffle door.Actuator is as control gear, and it requires from little moment of torsion to super large moment of torsion, and from the slow-speed of revolution to high rotating speed, from short-term operation to frequently working long hours, job requirement is special.Existing actuator transmission device is mostly adopt common Archimedes's cylindrical worm gearing transmission, it is large that Forming Theory due to Archimedes's cylindrical worm determines normal cylindrical worm gear relative sliding velocity, angle between relative sliding velocity direction and Line of contact is little, not easily form dynamic pressure oil film, the shortcomings such as total number of teeth in engagement is few, cause that normal cylindrical worm gear drive is lower than Involutes Gears Transmission efficiency, bearing capacity is poor, easy to wear, can not meet current many particular/special requirements to actuator.Especially for the requirement of the high rotating speed frequent operation under the super large moment of torsion of actuator, its solution one increases input power, is secondly improve transmission efficiency.For increase input power, because interface size is conditional, can not unconfined increasing input power, and need the saving considering the energy.Improve transmission efficiency, under same transmission environment, need to change its drive mechanism form.And the advantages such as the structural feature of twice-enveloping toroid helicoids worm has that transmission efficiency is high, bearing capacity strong, long service life, particular job requirement of actuator can be met.
Model utility content
In order to solve the problem that traditional Archimedes' worm transmission efficiency is low, power consumption is large, input torque is restricted, output torque power is little, the utility model provides a kind of planar double-enveloping wormwheel secondary electric actuator.
The utility model solves the technological scheme that its technical problem adopts: the secondary electric actuator of a kind of planar double-enveloping wormwheel, comprise housing, valve stem connection, wheel hub, worm gear edge, worm screw, end cap and bearing, described valve stem connection is arranged in housing, valve stem connection is fixedly connected with wheel hub one end, the described wheel hub the other end is connected with worm gear edge is detachable, described worm gear edge and worm meshing, worm screw two ends are bearing in the endoporus of housing side by bearing, and it is axially fixed by the end cap be connected on housing.
The circular arc radian of described worm gear edge is greater than 90 °, and described transmission device worm gear edge used is be split to form after full circle overall processing, can split according to angle needed for valve opening and closing, and the circular arc radian of segmentation rear worm wheel edge is greater than 90 °.
Described worm screw is planar quadratic and annular enveloping worm, multiple toothly to engage because planar quadratic and annular enveloping worm has simultaneously, the advantages such as transmission efficiency is high, bearing capacity is strong, long service life, employing planar quadratic and annular enveloping worm can reduce the requirement to power source electric actuator greatly.
Described housing is symmetrically installed with two caging bolts, described caging bolt passes housing thus the rotational travel of limiting valve knock-off joint, caging bolt can be removed when needs whole circle running.
Described wheel hub is connected by hinged bolts with described worm gear edge, and wheel hub is different according to role from worm gear edge, and worm gear edge adopts wear-resisting copper material, and wheel hub selects steel or the magnesium iron of high strength, and two-part are connected by hinged bolts, is convenient to change, and saves material.
The endoporus at two ends, described housing side is symmetrical about casing center in vertical direction, and convenient change worm screw direction, to realize the mounting point needs under different operating mode.
Described wheel hub and housing cooperation place are provided with radial sliding bearing and axial anti-wear gasket; coordinate between wheel hub with housing and adopt sliding bearing protection; axial position anti-wear gasket selects the high-abrasive materials such as copper, composite material, polytetrafluoro; radial position adopts sliding bearing, and material should select copper, composite material.
Described worm screw one end is also connected with the electric actuator as power input, this electric actuator is the power source as the input of worm screw power, worm screw is rotated under power source drives, worm gear edge is driven to rotate, and then drive hub rotation, in transmission, worm and wheel edge is multiple tooth engages simultaneously.
The beneficial effects of the utility model are, planar double-enveloping wormwheel auxiliary driving electric actuator of the present utility model, multiple toothly engage, the advantages such as transmission efficiency is high, bearing capacity is strong, long service life, this greatly reduces the requirement to power source electric actuator simultaneously.When the same power of transmission, planar quadratic and annular enveloping worm speed reducer size is equivalent to 1/1 to three/2nd of normal cylindrical worm gear speed reducer size.In transmission efficiency, planar quadratic and annular enveloping worm exceeds more than at least 10% than normal cylindrical worm gear drive efficiency, almost close to the gear-driven efficiency of same gear ratios.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the cross-sectional view of embodiment 1 of the present utility model.
Fig. 2 is the cross-sectional view of embodiment 1 of the present utility model.
Fig. 3 is the structural representation of embodiment 2 of the present utility model.
In figure: 1, housing, 2, valve stem connection, 3, wheel hub, 4, worm gear edge, 5, worm screw, 6, end cap, 7, bearing, 8, hinged bolts, 9, caging bolt, 10, sliding bearing, 11, anti-wear gasket, 12, electric actuator.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
As illustrated in fig. 1 and 2, planar double-enveloping wormwheel auxiliary driving electric actuator of the present utility model, comprise housing 1, valve stem connection 2, wheel hub 3, worm gear edge 4, worm screw 5, end cap 6 and bearing 7, valve stem connection 2 is arranged in housing 1, valve stem connection 2 is fixedly connected with wheel hub 3 one end, and wheel hub 3 the other end is connected with worm gear edge 4 is detachable, and worm gear edge 4 engages with worm screw 5, worm screw 5 two ends are bearing in the endoporus of housing 1 side by bearing 7, it is axially fixed by the end cap 6 be connected on housing 1.
The circular arc radian of worm gear edge 4 is greater than 90 °, and transmission device worm gear edge 4 used is split to form for after full circle overall processing, can split according to angle needed for valve opening and closing, and the circular arc radian of segmentation rear worm wheel edge 4 is greater than 90 °.
Worm screw 5 is planar quadratic and annular enveloping worm, multiple toothly to engage because planar quadratic and annular enveloping worm 5 has simultaneously, the advantages such as transmission efficiency is high, bearing capacity is strong, long service life, employing planar quadratic and annular enveloping worm 5 can reduce the requirement to power source electric actuator 12 greatly.
Housing 1 is symmetrically installed with two caging bolts 9, caging bolt 9 passes housing 1 thus the rotational travel of limiting valve knock-off joint 2, caging bolt 9 can be removed when needs whole circle running.
Wheel hub 3 is connected by hinged bolts 8 with worm gear edge 4, and wheel hub 3 is different according to role from worm gear edge 4, and worm gear edge 4 adopts wear-resisting copper material, and wheel hub 3 selects steel or the magnesium iron of high strength, and two-part are connected by hinged bolts 8, is convenient to change, and saves material.
The endoporus at two ends, housing 1 side is in vertical direction about housing 1 Central Symmetry, and convenient change worm screw 5 direction, to realize the mounting point needs under different operating mode.
Wheel hub 3 and housing 1 cooperation place are provided with radial sliding bearing 10 and axial anti-wear gasket 11; coordinate between wheel hub 3 with housing 1 and adopt sliding bearing 10 to protect; axial position anti-wear gasket 11 selects the high-abrasive materials such as copper, composite material, polytetrafluoro; radial position adopts sliding bearing 10, and material should select copper, composite material.
Embodiment 2
Embodiment 2 is with the difference of embodiment 1, as shown in Figure 3, also be provided with electric actuator 12 in worm screw 5 one end, electric actuator 12 is the power sources as the input of worm screw 5 power, and worm screw 5 is rotated under power source drives, worm gear edge 4 is driven to rotate, and then drive wheel hub 3 to rotate, in transmission, worm screw 5 engages with worm gear edge 4 is multiple tooth simultaneously, and housing 1 is symmetrically installed with two caging bolts 9, caging bolt 9 position can up-down adjustment, the stroke of limiting valve knock-off joint 2.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Claims (8)
1. a planar double-enveloping wormwheel auxiliary driving electric actuator, it is characterized in that: comprise housing (1), valve stem connection (2), wheel hub (3), worm gear edge (4), worm screw (5), end cap (6) and bearing (7), described valve stem connection (2) is arranged in housing (1), valve stem connection (2) is fixedly connected with wheel hub (3) one end, described wheel hub (3) the other end is connected with worm gear edge (4) is detachable, described worm gear edge (4) is engaged with worm screw (5), worm screw (5) two ends are bearing in the endoporus of housing (1) side by bearing (7), it is axially fixed by the end cap (6) be connected on housing (1).
2. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: the circular arc radian of described worm gear edge (4) is greater than 90 °.
3. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: described worm screw (5) is planar quadratic and annular enveloping worm.
4. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, it is characterized in that: described housing (1) is symmetrically installed with two caging bolts (9), described caging bolt (9) is through housing (1) thus the rotational travel of limiting valve knock-off joint (2).
5. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: described wheel hub (3) is connected by hinged bolts (8) with described worm gear edge (4).
6. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: the endoporus at two ends, described housing (1) below is in the horizontal direction about housing (1) Central Symmetry.
7. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: described wheel hub (3) and housing (1) cooperation place are provided with radial sliding bearing (10) and axial anti-wear gasket (11).
8. planar double-enveloping wormwheel auxiliary driving electric actuator as claimed in claim 1, is characterized in that: described worm screw (5) one end is also connected with the electric actuator (12) as power input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758343.XU CN204327868U (en) | 2014-12-04 | 2014-12-04 | Planar double-enveloping wormwheel auxiliary driving electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758343.XU CN204327868U (en) | 2014-12-04 | 2014-12-04 | Planar double-enveloping wormwheel auxiliary driving electric actuator |
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| Publication Number | Publication Date |
|---|---|
| CN204327868U true CN204327868U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420758343.XU Active CN204327868U (en) | 2014-12-04 | 2014-12-04 | Planar double-enveloping wormwheel auxiliary driving electric actuator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931177A (en) * | 2015-12-29 | 2017-07-07 | 中核新能核工业工程有限责任公司 | A kind of rotary drum vacuum valve valve element position-limit mechanism |
-
2014
- 2014-12-04 CN CN201420758343.XU patent/CN204327868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931177A (en) * | 2015-12-29 | 2017-07-07 | 中核新能核工业工程有限责任公司 | A kind of rotary drum vacuum valve valve element position-limit mechanism |
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