CN204334210U - A kind of three-section type pipe electric pushrod - Google Patents
A kind of three-section type pipe electric pushrod Download PDFInfo
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- CN204334210U CN204334210U CN201520039629.7U CN201520039629U CN204334210U CN 204334210 U CN204334210 U CN 204334210U CN 201520039629 U CN201520039629 U CN 201520039629U CN 204334210 U CN204334210 U CN 204334210U
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Abstract
The utility model discloses a kind of three-section type pipe electric pushrod, comprise outer tube and planetary gear motor within the outer tube, one-level screw rod, one-level nut, the secondary screw rod of hollow, secondary nut, middle pipe and interior pipe are set; Interior pipe box is located in middle pipe, a stopping means is also provided with in outer tube, stopping means comprises limit base, be arranged on the first limit switch on limit base and the second limit switch and trigger the drag link mechanism of the first limit switch action, limit base is between adapter sleeve and one-level nut, and stopping means also comprises two diodes in parallel with the first limit switch and the second limit switch respectively.Relative to prior art, three-section type pipe electric pushrod processes of the present utility model and assembling are simply, easy to utilize; The limit switch of restriction stroke limit position is all located on same limit base, make stopping means simpler, install more convenient, middle pipe and interior pipe are accurately controlled at stroke limit position.
Description
Technical field
The utility model relates to the device for rotary motion being converted to straight reciprocating motion, particularly relates to a kind of three-section type pipe electric pushrod.
Background technology
Electric pushrod is a kind of low energy consumption, pollution-free, low noise Linear actuator, is widely used in the fields such as medicine equipment, furniture sofa, industrial instrument, home decoration decoration.Along with quality of life improves constantly, the consumption idea of people changes, and the intelligentized push rod in middle and high end progressively enters the application of family and scientific and technological industry, this series products is contained huge demand.Although electric pushrod has had more than 10 year from being introduced into production, but great majority are original bread formula, pistol type model in the market, because this kind of type product structure is by worm gear pair deceleration transmission, motor and drive rod angle in 90 °, volume takes up room greatly, add and connect the factors such as complicated, degree of protection is on the low side, hinders the applicating and exploitation of a lot of application.In addition in stroke limit control, great majority adopt following control method at present: 1, current protection system; 2, sensory-control system.These two kinds of control system have certain defect and complexity: Current Control protection system due to long-term overload operation, can make the long-term stall of motor damage or damage spare and accessory parts and motor, make life-span decline stability poor in Long-Time Service; It is better that transducer to control in nonmetal field effect, and in metal field, install effect bad, installs more complicated, easily occur error.Therefore, the shortcoming existed in prior art, is necessary to make improvement to prior art.
Utility model content
In order to overcome the shortcoming and defect existed in prior art, the utility model provides a kind of three-section type pipe electric pushrod.
The utility model is achieved through the following technical solutions: a kind of three-section type pipe electric pushrod, comprises outer tube and arranges planetary gear motor within the outer tube, one-level screw rod, one-level nut, the secondary screw rod of hollow, secondary nut, middle pipe and interior pipe; Described interior pipe box is located in middle pipe, and described secondary screw sleeve is located in interior pipe, and described one-level screw sleeve is located in secondary screw rod; Described planetary gear motor is connected with one-level screw rod by an adapter sleeve, and described one-level nut and one-level screw rod are threaded connection, and described one-level nut is fixedly connected with middle pipe; Described secondary nut and secondary screw rod are threaded connection, and described secondary nut is fixedly connected with interior pipe and is set in middle pipe; A stopping means is also provided with in described outer tube, described stopping means comprises limit base, be arranged on the first limit switch on limit base and the second limit switch and trigger the drag link mechanism of the first limit switch action, described limit base is between adapter sleeve and one-level nut, and described stopping means also comprises two diodes in parallel with the first limit switch and the second limit switch respectively.
Further, also comprise and be set in one-level rolling bearing on one-level screw rod and secondary screw rod and secondary rolling bearing respectively, described one-level rolling bearing is arranged between adapter sleeve and limit base, and described secondary bearing is arranged between one-level nut and secondary nut.
Further, described drag link mechanism comprises pull bar, back-moving spring and primary nut, and the hook that the front end of described pull bar has triggering first limit switch draws portion, and the hook that described back-moving spring is set in pull bar draws portion, and described primary nut is arranged on the afterbody of pull bar.
Further, described secondary screw rod endoporus is regular hexagon, and the afterbody of described one-level screw rod and secondary screw rod is linked by hexagonal drive sleeve.
Further, also comprise for preventing secondary screw rod from swinging and being set in the positioning sleeve of secondary screw rod tail.
Further, also comprise and be arranged on outer tube afterbody and large fairlead between outer tube and middle pipe and pipe afterbody little fairlead between middle pipe and interior pipe in being arranged on.
Further, also comprise and be separately positioned on large sealing packing ring in large fairlead and little fairlead and small sealing ring.
Further, also comprise two to be respectively used to locate hexagonal drive sleeve and positioning sleeve and the shaft block ring being separately positioned on secondary screw rod tail and one-level screw rod tail.
Further, the front erection column being separately positioned on outer tube front end and interior pipe afterbody and back mounting pole is also comprised.
Further, also comprise be arranged on one-level rolling bearing and and adapter sleeve between hole back-up ring.
Relative to prior art, three-section type pipe electric pushrod processes of the present utility model and assembling are simply, easy to utilize; The limit switch of restriction stroke limit position is all located on same limit base, make stopping means simpler, install more convenient, middle pipe and interior pipe are accurately controlled at stroke limit position; In addition, fitted seal circle, its degree of protection is improved greatly, and reliability is higher, and the scope of application is wider.
In order to understand better and implement, describe the utility model in detail below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the structural representation of three-section type pipe electric pushrod of the present utility model.
Fig. 2 is the structural representation of one-level screw rod.
Fig. 3 is the structural representation of stopping means.
Fig. 4 is the structural representation of another angle of stopping means.
Embodiment
Refer to Fig. 1-Fig. 4, Fig. 1 is the structural representation of three-section type pipe electric pushrod of the present utility model, and Fig. 2 is the structural representation of one-level screw rod, and Fig. 3 is the structural representation of stopping means, and Fig. 4 is the structural representation of another angle of stopping means.
A kind of three-section type pipe electric pushrod of the present utility model, comprises front erection column 1, outer tube 2, planetary gear motor 3, adapter sleeve 4, hole back-up ring 5, one-level rolling bearing 6, limit base 7, pull bar 8, back-moving spring 9, limit switch 10, one-level nut 11, secondary rolling bearing 12, secondary nut 13, middle pipe 14, interior pipe 15, one-level screw rod 16, secondary screw rod 17, primary nut 18, large fairlead 19, large sealing packing ring 20, little fairlead 21, small sealing ring 22, hexagonal drive sleeve 23, shaft block ring 24, positioning sleeve 25, back mounting pole 26 and diode 27.
Particularly, planetary gear motor 3, one-level screw rod 16, one-level nut 11, secondary screw rod 17, secondary nut 18, middle pipe 14 and interior pipe 15 are all arranged in outer tube 2; Interior pipe 15 is set in middle pipe 15, and secondary screw rod 17 is set in interior pipe 15; Secondary screw rod 17 is hollow, and one-level screw rod 16 is set in secondary screw rod 17; Planetary gear motor 3 is connected with one-level screw rod 16 by adapter sleeve 4, and one-level nut 11 and one-level screw rod 16 are threaded connection, and one-level nut 11 is fixedly connected with middle pipe 14; Secondary nut 18 and secondary screw rod 17 are threaded connection, and secondary nut 18 is fixedly connected with interior pipe 15 and is set in middle pipe 14.
One-level rolling bearing 6 and secondary rolling bearing 12 are set on one-level screw rod 16 and secondary screw rod 17 respectively, and one-level rolling bearing 16 is arranged between adapter sleeve 4 and limit base 7, and secondary bearing 17 is arranged between one-level nut 11 and secondary nut 12.Secondary screw rod 17 endoporus is regular hexagon, and the afterbody of one-level screw rod 16 and secondary screw rod 17 is linked by hexagonal drive sleeve 23.Positioning sleeve 26 is set in secondary screw rod 17 afterbody, and positioning sleeve 26 swings for preventing secondary screw rod 17.Large fairlead 19 is arranged on outer tube 2 afterbody and between outer tube 2 and middle pipe 14, and little fairlead 21 is arranged on middle pipe 14 afterbody and between middle pipe 14 and interior pipe 15.
Limit switch 10 comprises the first limit switch 101 and the second limit switch 102, first limit switch 101 and the second limit switch 102 and is all arranged on limit base 7.Limit base 7 is between adapter sleeve 4 and one-level nut 11.Drag link mechanism comprises pull bar 8, back-moving spring 9 and primary nut 18, and the hook that the front end of pull bar 8 has triggering first limit switch 101 draws portion, and the hook that back-moving spring 9 is set in pull bar 8 draws portion, and primary nut 18 is arranged on the afterbody of pull bar 8.The drag link mechanism of limit base 7, first limit switch 101, second limit switch 102 and triggering the first limit switch 101 action all belongs to stopping means, and stopping means also comprises two diodes 28 in parallel with the first limit switch 101 and the second limit switch 102 respectively.When one-level screw rod 16 rotates towards a direction, when one-level nut 11 touches primary nut 18, drive the hook portion of drawing of pull bar 8 to touch the first limit switch 101, planetary gear motor 3 stops operating, and the rectilinear movement of middle pipe 14 and interior pipe 15 stops.When one-level screw rod 16 counter-rotation, until one-level nut 11 touches the second limit switch 102, planetary gear motor 3 stops 3 rotations, and one-level screw rod 16 stops the movement in this direction.
Large sealing packing ring 20 and small sealing ring 22 are separately positioned in large fairlead 19 and little fairlead 21.Two shaft block rings 25 are separately positioned on secondary screw rod 17 afterbody and one-level screw rod 16 afterbody.Front erection column 1 and back mounting pole 27 are separately positioned on outer tube 2 front end and interior pipe 15 afterbody.Hole back-up ring 5 be arranged on one-level rolling bearing 6 and and adapter sleeve 4 between.
The operation principle of three-section type pipe electric pushrod of the present utility model is: start planet gear motor 3, planetary gear motor 3 drives one-level screw rod 16 to rotate, one-level screw rod 16 drives one-level nut 11 to rotate, and during one-level nut 11 promotes, pipe 14 linearly moves in outer tube 2.The one-level screw rod 16 rotated drives secondary screw rod 17 to rotate by hexagonal drive sleeve 23, and secondary screw rod 17 drives interior pipe 15 moving linearly in middle pipe 14.When one-level nut 11 moves to range with middle pipe and touches primary nut 18, primary nut 18 drives the hook portion of drawing of pull bar 8 to touch the first limit switch 101, and planetary gear motor 3 stops operating.When planetary gear motor 3 counter-rotation, when one-level nut 11 moves to minimum stroke, one-level nut touches the second limit switch 102, and planetary gear motor 3 stops operating.
Relative to prior art, three-section type pipe electric pushrod of the present utility model, make outer tube and planetary gear motor in alignment, taking up room is 30 ~ 40% of old-fashioned electric pushrod, and weight saving 25 ~ 35%, outward appearance is more succinct.Three-section type pipe electric pushrod of the present utility model preferentially adopts tube and pipe of aluminium alloy or round steel pipe as shell, and planet-gear speed reducing motor is built in pipe, and motor is directly connected with screw rod by adapter sleeve, and without complicated annexation, reliability is higher.Three-section type pipe electric pushrod is under direct current driving power supply controls, and motor is rotated through epicyclic gearbox speed change and adapter sleeve drives screw rod to rotate, and driving shaft advances or retreats under nut effect, and the effect object of making reaches desirable steady rectilinear motion effect.All parts are all sealed in outer tube, fitted seal circle, better tightness, degree of protection improves greatly, can reach IP65 ~ 68, all can use stopping means that spacing for front and back two limit switches are arranged on same limit base under various conditions, mounting process operability is better, reliability is higher, and middle pipe and interior pipe are accurately controlled at stroke limit position, makes journey error within the scope of ± 2mm.In addition, its processes and assembling simply, can be developed pocket, small-sized and heavy electric pushrod, so that be generalized to the application of more areas.The utility model is particularly useful for equipment or the occasions such as furniture, skylight, Electrically operated gate, sick bed, operation table, dental chair, industrial equipment, lifting platform.
The utility model is not limited to above-mentioned execution mode, if do not depart from spirit and scope of the present utility model to various change of the present utility model or distortion, if these are changed and distortion belongs within claim of the present utility model and equivalent technologies scope, then the utility model is also intended to comprise these changes and distortion.
Claims (10)
1. a three-section type pipe electric pushrod, is characterized in that: comprise outer tube and arrange planetary gear motor within the outer tube, one-level screw rod, one-level nut, the secondary screw rod of hollow, secondary nut, middle pipe and interior pipe; Described interior pipe box is located in middle pipe, and described secondary screw sleeve is located in interior pipe, and described one-level screw sleeve is located in secondary screw rod; Described planetary gear motor is connected with one-level screw rod by an adapter sleeve, and described one-level nut and one-level screw rod are threaded connection, and described one-level nut is fixedly connected with middle pipe; Described secondary nut and secondary screw rod are threaded connection, and described secondary nut is fixedly connected with interior pipe and is set in middle pipe; A stopping means is also provided with in described outer tube, described stopping means comprises limit base, be arranged on the first limit switch on limit base and the second limit switch and trigger the drag link mechanism of the first limit switch action, described limit base is between adapter sleeve and one-level nut, and described stopping means also comprises two diodes in parallel with the first limit switch and the second limit switch respectively.
2. three-section type pipe electric pushrod according to claim 1, it is characterized in that: also comprise and be set in one-level rolling bearing on one-level screw rod and secondary screw rod and secondary rolling bearing respectively, described one-level rolling bearing is arranged between adapter sleeve and limit base, and described secondary bearing is arranged between one-level nut and secondary nut.
3. three-section type pipe electric pushrod according to claim 1, it is characterized in that: described drag link mechanism comprises pull bar, back-moving spring and primary nut, the hook that the front end of described pull bar has triggering first limit switch draws portion, the hook that described back-moving spring is set in pull bar draws portion, and described primary nut is arranged on the afterbody of pull bar.
4. three-section type pipe electric pushrod according to claim 1, is characterized in that: described secondary screw rod endoporus is regular hexagon, and the afterbody of described one-level screw rod and secondary screw rod is linked by hexagonal drive sleeve.
5. three-section type pipe electric pushrod according to claim 4, is characterized in that: also comprise for preventing secondary screw rod from swinging and being set in the positioning sleeve of secondary screw rod tail.
6. three-section type pipe electric pushrod according to claim 1, is characterized in that: also comprise and be arranged on outer tube afterbody and large fairlead between outer tube and middle pipe and pipe afterbody little fairlead between middle pipe and interior pipe in being arranged on.
7. three-section type pipe electric pushrod according to claim 6, is characterized in that: also comprise and be separately positioned on large sealing packing ring in large fairlead and little fairlead and small sealing ring.
8. three-section type pipe electric pushrod according to claim 5, is characterized in that: also comprise two and be respectively used to locate hexagonal drive sleeve and positioning sleeve and the shaft block ring being separately positioned on secondary screw rod tail and one-level screw rod tail.
9. three-section type pipe electric pushrod according to claim 1, is characterized in that: also comprise the front erection column and back mounting pole that are separately positioned on outer tube front end and interior pipe afterbody.
10. three-section type pipe electric pushrod according to claim 2, is characterized in that: also comprise be arranged on one-level rolling bearing and and adapter sleeve between hole back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520039629.7U CN204334210U (en) | 2015-01-20 | 2015-01-20 | A kind of three-section type pipe electric pushrod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520039629.7U CN204334210U (en) | 2015-01-20 | 2015-01-20 | A kind of three-section type pipe electric pushrod |
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| Publication Number | Publication Date |
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| CN204334210U true CN204334210U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520039629.7U Active CN204334210U (en) | 2015-01-20 | 2015-01-20 | A kind of three-section type pipe electric pushrod |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| CN106411034A (en) * | 2016-09-27 | 2017-02-15 | 上海舜拓电机有限公司 | Linear electric push rod capable of adjusting limitation positions |
| CN106430030A (en) * | 2016-08-31 | 2017-02-22 | 浙江捷昌线性驱动科技股份有限公司 | Lifting stand column with ultra-low installation distance |
-
2015
- 2015-01-20 CN CN201520039629.7U patent/CN204334210U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| CN106253568B (en) * | 2016-08-25 | 2018-05-22 | 浙江联宜电机有限公司 | Electric pushrod |
| CN106430030A (en) * | 2016-08-31 | 2017-02-22 | 浙江捷昌线性驱动科技股份有限公司 | Lifting stand column with ultra-low installation distance |
| CN106411034A (en) * | 2016-09-27 | 2017-02-15 | 上海舜拓电机有限公司 | Linear electric push rod capable of adjusting limitation positions |
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