CN206280455U - A kind of linear actuator position limitation protection structure - Google Patents
A kind of linear actuator position limitation protection structure Download PDFInfo
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- CN206280455U CN206280455U CN201621188684.3U CN201621188684U CN206280455U CN 206280455 U CN206280455 U CN 206280455U CN 201621188684 U CN201621188684 U CN 201621188684U CN 206280455 U CN206280455 U CN 206280455U
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Abstract
The utility model belongs to the structure-design technique of linear actuator, is related to the improvement to linear actuator position limitation protection structure.It is characterized in that：1st transmission component left gear (2) is connected as entirety with the 1st power transmission shaft (11)；There is left disk spring (6a) between screw gear (6) and the 3rd transmission component left bearing (10a), have right disk spring (6b) between screw gear (6) and the 3rd transmission component right bearing (10b).The utility model provides a kind of improved linear actuator position limitation protection structure, solves the problems, such as that existing linear actuator slide engaging and disengaging position limitation protection structure heating is serious, extends service life.
Description
Technical field
The utility model belongs to the structure-design technique of linear actuator, is related to linear actuator position limitation protection structure
Improve.
Background technology
For rotary motion to be switched to the linear actuator of linear motion, typically using Motor drive decelerator, decelerator
Leading screw rotation is driven, lead screw pair is moved along a straight line, when using mechanical position limitation, i.e., lead screw pair is given again along linear running after in place
Motor is powered off, because the power that lead screw pair is delivered to after decelerating through motor is larger, to actuated element in mechanical stop limiter and actuator
Impact it is very big, it is therefore desirable in motor to carrying out position limitation protection design between decelerator.
Being commonly used at present in decelerator increases the position limitation protection structure of slide engaging and disengaging, Fig. 1 be band conventional at present slide from
Close position limitation protection structural representation.It include housing, motor 1, motor output gear 1a, the 1st transmission component, the 2nd transmission component,
3rd transmission component, feed screw nut 8, left limit block 9a and right limit block 9b；Motor output gear 1a is fixed on the output shaft of motor 1
Termination, the 1st transmission component include the 1st transmission component left gear 2, clutch 2a, the 1st transmission component right gear the 3, the 1st be driven
Component left bearing 11a, the 1st transmission component right bearing 11b and the 1st power transmission shaft 11.
1st power transmission shaft 11 is arranged on housing by the 1st transmission component left bearing 11a and the 1st transmission component right bearing 11b
Interior, the 1st transmission component left gear 2 is connected by clutch 2a with the 1st power transmission shaft 11, and the 1st transmission component right gear the 3 and the 1st is passed
Moving axis 11 is connected as entirety, and motor output gear 1a engages the 1st speed reducing gear pair of composition with the 1st transmission component left gear 2.
2nd transmission component includes the 2nd transmission component left gear 5, the 2nd transmission component right gear 4, the 2nd transmission component left axle
Hold 12a, the 2nd transmission component right bearing 12b and the 2nd power transmission shaft 12, the 2nd power transmission shaft 12 by the 2nd transmission component left bearing 12a and
2nd transmission component right bearing 12b is arranged in housing, the 2nd transmission component left gear 5 and the 2nd transmission component right gear 4 and the 2nd
Power transmission shaft 12 is connected as being monolithically fabricated the 1st duplicate gear, and the 1st transmission component right gear 3 is engaged with the 2nd transmission component right gear 4
Constitute the 2nd speed reducing gear pair.
3rd transmission component includes leading screw, screw gear 6, the 3rd transmission component left bearing 10a and the 3rd transmission component right bearing
10b, leading screw is made up of the connection of light shaft part 10 of the raceway section 7 and the right on the left side, and light shaft part 10 passes through the 3rd transmission component left bearing
10a and the 3rd transmission component right bearing 10b is arranged in housing, and screw gear 6 is connected as entirety, the 2nd with the middle part of light shaft part 10
Transmission component left gear 5 engages the 3rd speed reducing gear pair of composition with screw gear 6；Raceway section 7 is engaged with feed screw nut 8, works as leading screw
The left limit block 9a that nut 8 is fixed on housing when running to limit on the left position is spacing, when feed screw nut 8 runs to limit on the right-right-hand limit
The right limit block 9b being fixed on during position on housing is spacing.
Its operation principle is：It is forced stop motion, feed screw nut 8 when feed screw nut 8 runs to extreme position and clashes into limit
The moment of position block, motor 1 does not power off the trend being rotated further, and motor 1 drives the 1st transmission component left gear 2 to overcome clutch
The frictional force of 2a is rotated further, and the 1st transmission component right gear 3, the 2nd transmission component left gear 5, the 2nd transmission component right gear
4th, screw gear 6, leading screw raceway section 7 are remained stationary as, so as to avoid larger impact.
It has the disadvantage：Because rotating speed is higher, the friction plate of the slide engaging and disengaging in clutch 2a is produced very in friction process
Many heats, are delivered on gear, cause grease to generate heat serious, reduce the use service life of linear actuator.
The content of the invention
The purpose of this utility model is：A kind of improved linear actuator position limitation protection structure is provided, it is existing to solve
The serious problem of linear actuator slide engaging and disengaging position limitation protection structure heating, increases the service life.
The technical solution of the utility model is：A kind of linear actuator position limitation protection structure, it includes housing, motor 1, electricity
Machine output gear 1a, the 1st transmission component, the 2nd transmission component, the 3rd transmission component, feed screw nut 8, left limit block 9a and right limit
Block 9b；Motor output gear 1a is fixed on the termination of the output shaft of motor 1, the 1st transmission component include the 1st transmission component left gear 2,
1st transmission component right gear 3, the 1st transmission component left bearing 11a, the 1st transmission component right bearing 11b and the 1st power transmission shaft 11, the 1st
Power transmission shaft 11 is arranged in housing by the 1st transmission component left bearing 11a and the 1st transmission component right bearing 11b, the 1st transmission group
The power transmission shaft 11 of part right gear 3 and the 1st is connected as entirety, and motor output gear 1a engages composition the with the 1st transmission component left gear 2
1 speed reducing gear pair；2nd transmission component includes the 2nd transmission component left gear 5, the 2nd transmission component right gear 4, the 2nd transmission component
Left bearing 12a, the 2nd transmission component right bearing 12b and the 2nd power transmission shaft 12, the 2nd power transmission shaft 12 pass through the 2nd transmission component left bearing
12a and the 2nd transmission component right bearing 12b is arranged in housing, the 2nd transmission component left gear 5 and the 2nd transmission component right gear 4
It is connected as being monolithically fabricated the 1st duplicate gear, the 1st transmission component right gear 3 and the 2nd transmission component right gear 4 with the 2nd power transmission shaft 12
Engagement constitutes the 2nd speed reducing gear pair；3rd transmission component includes leading screw, screw gear 6, the 3rd transmission component left bearing 10a and the 3rd
Transmission component right bearing 10b, leading screw is made up of the connection of light shaft part 10 of the raceway section 7 and the right on the left side, and light shaft part 10 passes through the 3rd
Transmission component left bearing 10a and the 3rd transmission component right bearing 10b is arranged in housing, the middle part of screw gear 6 and light shaft part 10
Entirety is connected as, the 2nd transmission component left gear 5 engages the 3rd speed reducing gear pair of composition with screw gear 6；Raceway section 7 and leading screw spiral shell
Female 8 engage, and the left limit block 9a being fixed on when feed screw nut 8 runs to limit on the left position on housing is spacing, when leading screw spiral shell
The female 8 right limit block 9b being fixed on housing when running to limit on the right-right-hand limit position are spacing；It is characterized in that：
1st transmission component left gear 2 and the 1st power transmission shaft 11 are connected as entirety, and the 1st transmission component left gear the 2, the 1st is driven
Component right gear 3 and the 1st power transmission shaft 11 constitute the 2nd duplicate gear；
There are left disk spring 6a, a left side of left disk spring 6a between the transmission component left bearing 10a of screw gear 6 and the 3rd
The right side of the 3rd transmission component left bearing 10a inner rings is withstood at end, and the right-hand member of left disk spring 6a withstands the left end of screw gear 6
Face；The left end for having right disk spring 6b, right disk spring 6b between the transmission component right bearing 10b of screw gear 6 and the 3rd withstands
The right side of screw gear 6, the right-hand member of right disk spring 6b withstands the left side of the 3rd transmission component right bearing 10b inner rings.
The utility model has the advantages that：There is provided a kind of improved linear actuator position limitation protection structure, solve existing
The serious problem of linear actuator slide engaging and disengaging position limitation protection structure heating, extends service life.
Brief description of the drawings
Fig. 1 is band slide engaging and disengaging position limitation protection structural representation conventional at present.
Fig. 2 is position limitation protection structural representation of the present utility model.
Specific embodiment
The utility model is described in further details below.Referring to Fig. 2, a kind of linear actuator position limitation protection structure,
It includes housing, motor 1, motor output gear 1a, the 1st transmission component, the 2nd transmission component, the 3rd transmission component, feed screw nut
8th, left limit block 9a and right limit block 9b；Motor output gear 1a is fixed on the termination of the output shaft of motor 1, the 1st transmission component bag
Include the 1st transmission component left gear 2, the 1st transmission component right gear 3, the 1st transmission component left bearing 11a, the 1st transmission component right axle
11b and the 1st power transmission shaft 11 are held, the 1st power transmission shaft 11 passes through the 1st transmission component left bearing 11a and the 1st transmission component right bearing 11b
In housing, the 1st transmission component right gear 3 and the 1st power transmission shaft 11 are connected as entirety, and motor output gear 1a and the 1st is passed
Dynamic component left gear 2 is engaged and constitutes the 1st speed reducing gear pair；2nd transmission component is driven including the 2nd transmission component left gear the 5, the 2nd
Component right gear 4, the 2nd transmission component left bearing 12a, the 2nd transmission component right bearing 12b and the 2nd power transmission shaft 12, the 2nd power transmission shaft
12 are arranged in housing by the 2nd transmission component left bearing 12a and the 2nd transmission component right bearing 12b, the 2nd left tooth of transmission component
The 5 and the 2nd transmission component right gear 4 of wheel and the 2nd power transmission shaft 12 are connected as being monolithically fabricated the 1st duplicate gear, the 1st right tooth of transmission component
Wheel 3 engages the 2nd speed reducing gear pair of composition with the 2nd transmission component right gear 4；3rd transmission component includes leading screw, screw gear 6, the
3 transmission component left bearing 10a and the 3rd transmission component right bearing 10b, leading screw by the left side raceway section 7 and the right light shaft part 10
Connection composition, light shaft part 10 is arranged in housing by the 3rd transmission component left bearing 10a and the 3rd transmission component right bearing 10b,
Screw gear 6 is connected as entirety with the middle part of light shaft part 10, and the 2nd transmission component left gear 5 engages composition the 3rd with screw gear 6
Speed reducing gear pair；Raceway section 7 is engaged with feed screw nut 8, is fixed on housing when feed screw nut 8 runs to limit on the left position
Left limit block 9a it is spacing, the right limit block 9b being fixed on when feed screw nut 8 runs to limit on the right-right-hand limit position on housing is spacing；
It is characterized in that：
1st transmission component left gear 2 and the 1st power transmission shaft 11 are connected as entirety, and the 1st transmission component left gear the 2, the 1st is driven
Component right gear 3 and the 1st power transmission shaft 11 constitute the 2nd duplicate gear；
There are left disk spring 6a, a left side of left disk spring 6a between the transmission component left bearing 10a of screw gear 6 and the 3rd
The right side of the 3rd transmission component left bearing 10a inner rings is withstood at end, and the right-hand member of left disk spring 6a withstands the left end of screw gear 6
Face；The left end for having right disk spring 6b, right disk spring 6b between the transmission component right bearing 10b of screw gear 6 and the 3rd withstands
The right side of screw gear 6, the right-hand member of right disk spring 6b withstands the left side of the 3rd transmission component right bearing 10b inner rings.
Operation principle of the present utility model is：It is forced stop motion, leading screw when feed screw nut 8 runs to limit on the right-right-hand limit position
Nut 8 clashes into the moment of limited block 9b, and motor 1 does not power off the trend being rotated further, and drives the 1st transmission component, the 2nd transmission group
Part, screw gear 6 and leading screw continue to rotate, and because feed screw nut 8 is motionless, leading screw light shaft part 10 has axial position to the left after rotating
Move, so as to extrude disk spring 6a, because there is axial displacement, so as to increased during power-off from moving to static time, root
According to impulsive force formula F=mv/t (t- is from down to the static time for the quality of m- motor elements, speed when v- is powered off), t increases
After big, F reduces, therefore, the impulsive force that mechanical stop limiter and actuated element are subject in actuator is reduced, so as to be protected
Shield；It is forced stop motion when feed screw nut 8 runs to limit on the left position, feed screw nut 8 clashes into the moment of limited block 9a, motor
1 does not power off the trend being rotated further, and drives the 1st transmission component, the 2nd transmission component, screw gear 6 and leading screw to continue to rotate,
Because feed screw nut 8 is motionless, leading screw light shaft part 10 has axial displacement to the right after rotating, so that disk spring 6b is extruded, because
There is axial displacement, so as to increased from the static time is moved to during power-off, according to impulsive force formula F=mv/t, t increases
Afterwards, F reduces, therefore, the impulsive force that mechanical stop limiter and actuated element are subject in actuator is reduced, so as to be protected.
This position limitation protection process will not produce many heats, extend the linear actuator life-span.
Claims (1)
1. a kind of linear actuator position limitation protection structure, it includes housing, motor (1), motor output gear (1a), the 1st transmission
Component, the 2nd transmission component, the 3rd transmission component, feed screw nut (8), left limit block (9a) and right limit block (9b)；Motor is exported
Gear (1a) is fixed on the termination of motor (1) output shaft, and the 1st transmission component includes the 1st transmission component left gear (2), the 1st transmission
Component right gear (3), the 1st transmission component left bearing (11a), the 1st transmission component right bearing (11b) and the 1st power transmission shaft (11), the
1 power transmission shaft (11) is arranged in housing by the 1st transmission component left bearing (11a) and the 1st transmission component right bearing (11b), and the 1st
Transmission component right gear (3) is connected as entirety, motor output gear (1a) and the 1st left tooth of transmission component with the 1st power transmission shaft (11)
Wheel (2) engagement constitutes the 1st speed reducing gear pair；2nd transmission component includes that the 2nd transmission component left gear (5), the 2nd transmission component are right
Gear (4), the 2nd transmission component left bearing (12a), the 2nd transmission component right bearing (12b) and the 2nd power transmission shaft (12), the 2nd transmission
Axle (12) is arranged in housing by the 2nd transmission component left bearing (12a) and the 2nd transmission component right bearing (12b), the 2nd transmission
Component left gear (5) and the 2nd transmission component right gear (4) are connected as being monolithically fabricated the 1st duplicate gear with the 2nd power transmission shaft (12),
1st transmission component right gear (3) engages the 2nd speed reducing gear pair of composition with the 2nd transmission component right gear (4)；3rd transmission component bag
Leading screw, screw gear (6), the 3rd transmission component left bearing (10a) and the 3rd transmission component right bearing (10b) are included, leading screw is by the left side
Light shaft part (10) connection of raceway section (7) and the right constitute, light shaft part (10) by the 3rd transmission component left bearing (10a) and
3rd transmission component right bearing (10b) is arranged in housing, and entirety is connected as in the middle part of screw gear (6) and light shaft part (10), the
2 transmission component left gears (5) engage the 3rd speed reducing gear pair of composition with screw gear (6)；Raceway section (7) is nibbled with feed screw nut (8)
Close, the left limit block (9a) being fixed on when feed screw nut (8) runs to limit on the left position on housing is spacing, works as feed screw nut
(8) the right limit block (9b) being fixed on when running to limit on the right-right-hand limit position on housing is spacing；It is characterized in that：
1st transmission component left gear (2) is connected as entirety with the 1st power transmission shaft (11), and the 1st transmission component left gear (2), the 1st pass
Dynamic component right gear (3) and the 1st power transmission shaft (11) constitute the 2nd duplicate gear；
There are left disk spring (6a), left disk spring (6a) between screw gear (6) and the 3rd transmission component left bearing (10a)
Left end withstand the right side of the 3rd transmission component left bearing (10a) inner ring, the right-hand member of left disk spring (6a) withstands screw gear
(6) left side；There are right disk spring (6b), right dish between screw gear (6) and the 3rd transmission component right bearing (10b)
The left end of spring (6b) withstands the right side of screw gear (6), and the right-hand member of right disk spring (6b) withstands the 3rd transmission component right axle
Hold the left side of (10b) inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188684.3U CN206280455U (en) | 2016-11-04 | 2016-11-04 | A kind of linear actuator position limitation protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188684.3U CN206280455U (en) | 2016-11-04 | 2016-11-04 | A kind of linear actuator position limitation protection structure |
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| Publication Number | Publication Date |
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| CN206280455U true CN206280455U (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621188684.3U Active CN206280455U (en) | 2016-11-04 | 2016-11-04 | A kind of linear actuator position limitation protection structure |
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| Country | Link |
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| CN (1) | CN206280455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981124A (en) * | 2020-08-17 | 2020-11-24 | 曹大忠 | Mechanical operation idling limiting protection mechanism |
-
2016
- 2016-11-04 CN CN201621188684.3U patent/CN206280455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981124A (en) * | 2020-08-17 | 2020-11-24 | 曹大忠 | Mechanical operation idling limiting protection mechanism |
| CN111981124B (en) * | 2020-08-17 | 2021-06-08 | 绍兴柯桥皓悦纺织科技有限公司 | Mechanical operation idling limiting protection mechanism |
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