CN203707977U - A circular pipe type electric push rod - Google Patents
A circular pipe type electric push rod Download PDFInfo
- Publication number
- CN203707977U CN203707977U CN201320804969.5U CN201320804969U CN203707977U CN 203707977 U CN203707977 U CN 203707977U CN 201320804969 U CN201320804969 U CN 201320804969U CN 203707977 U CN203707977 U CN 203707977U
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- CN
- China
- Prior art keywords
- electric pushrod
- switch
- hollow sleeve
- type electric
- circular pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000001960 triggered effect Effects 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 241001661918 Bartonia Species 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
An electric push rod comprises a hollow sleeve. A motor, a screw stem in fixed connection with the motor, a screw nut in threaded connection with the screw stem and a driving pipe which sleeves the screw stem and which is in fixed connection with the screw nut are arranged in the hollow sleeve. A switch installation groove is arranged in the inner wall of the hollow sleeve along an axial direction of the hollow sleeve. A switch strip is fixedly arranged in the switch installation groove. A space limiting switch is arranged before the switch strip and a space limiting switch is arranged behind the switch strip. The space limiting switches are triggered by a trigger block on the screw nut. The technology processing and the assembling of the electric push rod are simple; the push rod is enabled to be accurately controlled at a stroke limit position; and stroke errors are made to be within a scope of more than or less than 2mm; the occupation space is smaller; the weight is lighter; the appearance is more succinct, gorgeous and beautiful; and the sealing performance is better.
Description
Technical field
The utility model relates to a kind of for be converted to the device of straight reciprocating motion by rotatablely moving, and is specifically related to a kind of 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, people's consumption idea changes, and the intelligentized push rod in middle and high end progressively enters the application of family and scientific and technological industry, makes this series products contain 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 style number product structure is by worm gear pair deceleration transmission, motor and drive rod angle in 90 °, volume takes up room greatly, adds and connects the factors such as complicated, and degree of protection is on the low side, outward appearance is not attractive in appearance, has hindered the applicating and exploitation of a lot of applications.Aspect stroke limit control, most adopts following control method in addition: 1, current protection system; 2 sensory-control systems.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 in long-term use, makes life-span decline stability poor; It is better that transducer is controlled in nonmetal field effect, effect is installed in metal field bad, and more complicated is installed, and easily occurs error.Therefore,, for fear of the shortcoming existing in prior art, be necessary prior art to make improvement.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of simple in structure, the electric pushrod that can accurately control displacement is provided.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of electric pushrod, comprise hollow sleeve, screw rod, the nut being connected with screw flight that is provided with motor in described hollow sleeve, be fixedly connected with motor and be sheathed on the driving tube being fixedly connected with on screw rod and with nut, is provided with a switch mounting groove along its axial direction on this hollow sleeve inwall; In this switch mounting groove, be installed with a switch bar; Before and after this switch bar, be respectively equipped with a limit switch; Described limit switch is triggered by the triggering block on nut.The utility model arranges a switch groove is installed on circular pipe type electric pushrod outer tube wall, and for the assembly of mounting limit switch and switch bar composition, limit switch is installed on respectively before and after switch bar, and compresses triggering by triggering block on nut.The assembling of this covering device is simple and convenient, and push rod is accurately controlled in extreme limit of travel position, makes journey error within the scope of ± 2mm, uses safety, easily adjusts.Circular pipe type electric pushrod is because outward appearance is magnificent attractive in appearance, and manufacturability operation is more simple, can develop pocket, small-sizedly and heavy, is applicable to the application in various fields.
Further, described switch bar is provided with multiple rectangular grooves for mounting limit switch.When convenient installation, regulate the position of limit switch, to change the front and back stroke of electric pushrod.
Further, this motor is fixedly connected with by an adapter sleeve with this screw rod.
Further, also comprise the rolling bearing being set on adapter sleeve; The both sides, front and back of this rolling bearing are respectively equipped with shaft block ring.
Further, also comprise the positioning sleeve that is set in screw front end.Prevent that screw rod from swinging in the time rotating, distortion.
Further, the front end inside of described hollow sleeve is provided with fairlead; This fairlead and driving tube matched in clearance.This fairlead play the guiding role to driving tube.
Further, in the endoporus of this fairlead, be provided with at least one sealing ring.Strengthen the sealing of electric pushrod.
Further, on described hollow sleeve inwall, be interval with four grooves along the axial direction of this hollow sleeve.This groove passes through for the lead-in wire of electric pushrod inside, also can be used as the spline effect of nut or other parts simultaneously, and nut can only be moved vertically.
Further, the tail end of described hollow sleeve is provided with afterbody erection column; The front end of described driving tube is provided with anterior erection column.
Brief description of the drawings
Fig. 1 is the structural representation of electric pushrod of the present utility model
Fig. 2 is the complete structure schematic diagram of electric pushrod shown in Fig. 1
Fig. 3 is the sectional drawing of hollow sleeve shown in Fig. 1
Fig. 4 is the structural representation of switch bar shown in Fig. 1
Fig. 5 is the scheme of installation of switching device shown in Fig. 1
Fig. 6 is the circuit connection diagram of limit switch shown in Fig. 1
Referring to drawings and the specific embodiments, the invention will be further described.
Embodiment
Please refer to Fig. 1 and Fig. 2, wherein, the structural representation that Fig. 1 is electric pushrod of the present utility model, Fig. 2 is the complete structure schematic diagram of electric pushrod shown in Fig. 1.A kind of electric pushrod of the present utility model, comprises hollow sleeve 1 and is located at motor 2, screw rod 3, nut 4, driving tube 5 and the switching device 6 in hollow sleeve 1.
Described hollow sleeve 1 tail end is provided with afterbody erection column 11, and the inside of front end is provided with fairlead 12; In the endoporus of fairlead 12, be provided with sealing ring 121.Refer to Fig. 3, it is the sectional drawing of hollow sleeve shown in Fig. 1.On this hollow sleeve 1 inwall, be interval with four grooves 13 along the axial direction of this hollow sleeve 1, and be provided with a switch mounting groove 14.
Described motor 2 is positioned at the rear portion of hollow sleeve 1, and this motor 2 is electrically connected with DC power supply; In the utility model, adopt planet-gear speed reducing motor.
Described screw rod 3 rear ends are fixedly connected with this motor 2 by an adapter sleeve 31, and front end is provided with a positioning sleeve 32.On described adapter sleeve, be arranged with a rolling bearing 33, before and after this rolling bearing, be respectively equipped with shaft block ring.
Described nut 4 is threaded with this screw rod 3, and nut 4 can rotate and moves forward and backward with screw rod 3.
Described driving tube 5 is set on screw rod 3 and with nut 4 front ends and is fixedly connected with, the front end endoporus matched in clearance of the outer ring of driving tube 5 and fairlead 12, and its front end is provided with anterior erection column 51; This driving tube 5 can move forward and backward with nut 4.
Please refer to Fig. 4 and Fig. 5, wherein Fig. 4 is the structural representation of switch bar 61 shown in Fig. 1, and Fig. 5 is the scheme of installation of switching device 6 shown in Fig. 1.Described switching device 6 comprises that switch bar 61 and front and back are separately positioned on the first limit switch 62 and the second limit switch 63 on switch bar 61.This switch bar 61 is fixedly installed in the switch mounting groove 14 in hollow sleeve 1, and this switch bar 61 is provided with multiple rectangular grooves 611.The pin of two limit switches is inserted in the rectangular groove 611 of switch bar.Two limit switches trigger by the triggering block on nut.
Refer to Fig. 6, it is the circuit connection diagram of limit switch shown in Fig. 1.Described the first limit switch 62 and the second limit switch 63 diode in parallel respectively.
The operation principle of electric pushrod of the present utility model is as follows: when power supply connects forward voltage, screw rod 3 rotates nut 4 is moved forward, thereby drives driving tube 5 to move forward.Trigger the first limit switch 62 when nut 4 advances to its triggering block, circuit disconnects, and motor 2 shuts down, and the driving tube 5 being connected with nut 4 halts.When power supply connects reverse voltage, screw rod 3 rotates and makes to move after nut 4, thereby moves after driving driving tube 5, triggers the second limit switch 63 when nut 4 advances to its triggering block, and circuit disconnects, and motor 2 shuts down, and the driving tube 5 being connected with nut 4 stops retreating.So can reach the object of the front and back stroke of accurately controlling electric pushrod.
The utility model proposes a kind of circular pipe type electric pushrod, make driving tube and motor in alignment, it is old-fashioned 30～40% taking up room, weight saving 25～35%, and outward appearance is more succinct magnificent attractive in appearance, better tightness (degree of protection is higher).The utility model circular pipe type electric pushrod proposes to adopt 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, there is no complicated connecting factors, and reliability is higher.Circular pipe type electric pushrod is under the control of DC driven power supply, and motor rotation drives screw rod rotation by epicyclic gearbox speed change and adapter sleeve, and driving tube advances or retreats under nut effect, makes to act on object and reaches desirable steady rectilinear motion effect.Because all parts are all sealed in pipe, fitted seal circle, degree of protection improves greatly, can reach IP65～68, all can use under various conditions.One switch is set on circular pipe type electric pushrod outer tube wall groove is installed, for the assembly of mounting limit switch and switch bar composition, limit switch is installed on respectively before and after switch bar, and compresses triggering by triggering block on nut.The assembling of this covering device is simple and convenient, and push rod is accurately controlled in extreme limit of travel position, makes journey error within the scope of ± 2mm, uses safety, easily adjusts.Circular pipe type electric pushrod is because outward appearance is magnificent attractive in appearance, and manufacturability operation is more simple, can develop pocket, small-sizedly and heavy, is applicable to the application in various fields.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (9)
1. a circular pipe type electric pushrod, comprise hollow sleeve, screw rod, the nut being connected with screw flight that is provided with motor in described hollow sleeve, be fixedly connected with motor and be sheathed on the driving tube being fixedly connected with on screw rod and with nut, is characterized in that: on this hollow sleeve inwall, be provided with a switch mounting groove along its axial direction; In this switch mounting groove, be installed with a switch bar; Before and after this switch bar, be respectively equipped with a limit switch; Described limit switch is triggered by the triggering block on nut.
2. a kind of circular pipe type electric pushrod according to claim 1, is characterized in that: described switch bar is provided with multiple rectangular grooves for mounting limit switch.
3. a kind of circular pipe type electric pushrod according to claim 1, is characterized in that: this motor is fixedly connected with by an adapter sleeve with this screw rod.
4. a kind of circular pipe type electric pushrod according to claim 3, is characterized in that: also comprise the rolling bearing being set on adapter sleeve; The both sides, front and back of this rolling bearing are respectively equipped with shaft block ring.
5. a kind of circular pipe type electric pushrod according to claim 4, is characterized in that: also comprise the positioning sleeve that is installed in screw front end.
6. a kind of circular pipe type electric pushrod according to claim 1, is characterized in that: the front end inside of described hollow sleeve is provided with fairlead; This fairlead and driving tube matched in clearance.
7. a kind of circular pipe type electric pushrod according to claim 6, is characterized in that: in the endoporus of this fairlead, be provided with at least one sealing ring.
8. a kind of circular pipe type electric pushrod according to claim 1, is characterized in that: on described hollow sleeve inwall, be interval with four grooves along the axial direction of this hollow sleeve.
9. a kind of circular pipe type electric pushrod according to claim 1, is characterized in that: the tail end of described hollow sleeve is provided with afterbody erection column; The front end of described driving tube is provided with anterior erection column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320804969.5U CN203707977U (en) | 2013-12-09 | 2013-12-09 | A circular pipe type electric push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320804969.5U CN203707977U (en) | 2013-12-09 | 2013-12-09 | A circular pipe type electric push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707977U true CN203707977U (en) | 2014-07-09 |
Family
ID=51058357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320804969.5U Expired - Lifetime CN203707977U (en) | 2013-12-09 | 2013-12-09 | A circular pipe type electric push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702042A (en) * | 2013-12-09 | 2015-06-10 | 台山市江口电器制造有限公司 | Round tube type electric push rod |
| CN107332388A (en) * | 2017-08-25 | 2017-11-07 | 上海舜拓电机有限公司 | A kind of stroke limit adjusting means of push rod |
-
2013
- 2013-12-09 CN CN201320804969.5U patent/CN203707977U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702042A (en) * | 2013-12-09 | 2015-06-10 | 台山市江口电器制造有限公司 | Round tube type electric push rod |
| CN107332388A (en) * | 2017-08-25 | 2017-11-07 | 上海舜拓电机有限公司 | A kind of stroke limit adjusting means of push rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |