CN207796016U - A kind of electric pushrod - Google Patents
A kind of electric pushrod Download PDFInfo
- Publication number
- CN207796016U CN207796016U CN201721399587.3U CN201721399587U CN207796016U CN 207796016 U CN207796016 U CN 207796016U CN 201721399587 U CN201721399587 U CN 201721399587U CN 207796016 U CN207796016 U CN 207796016U
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- CN
- China
- Prior art keywords
- electric pushrod
- leading screw
- outer tube
- gear
- inner tube
- 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 - Fee Related
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- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 230000009467 reduction Effects 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of electric pushrods, including driving mechanism, transmission mechanism and transfer bar mechanism, the driving mechanism output end is connected with the transmission mechanism input terminal, the transmission mechanism output end is connected with the transfer bar mechanism input terminal, the input terminal of the transfer bar mechanism is gear clutch, gear clutch axle center is provided with the leading screw being fixedly connected with the gear forces and mechanism, outer tube is set outside the leading screw, the column outer tube is provided with the travel switch being connected with the driving mechanism, it is additionally provided with inner tube on the leading screw, said inner tube is connect with the leading screw by nut, said inner tube central axial movement described in leading screw driving lower edge, and contacting travel switchs the nut during the motion.Electric pushrod disclosed in the utility model, scientific structure design is reasonable, by a series of rationalization structure design, ensures that electric pushrod has more stable safety, more wide applicability.
Description
Technical field
The utility model is related to mechanical equipment technical field, more particularly to a kind of electric pushrod.
Background technology
Small-sized electric push rod outer tube generally uses aluminium section bar to draw molding.Outer tube shape mostly use it is rectangular, oval and its
The not rounded outer cross section such as his irregular shape.There is the shortcomings of being not easy to seal, is not easy to install, product structure is complicated in on-circular cross-section.It is existing
Some electric pushrods, it is usually that travel switch is external or be placed in reduction box, it needs to increase many auxiliary spare parts, tie
Structure is complicated, and installation is inconvenient.In addition common electric pushrod does not set overload protecting mechanism generally, when occur load it is excessive when, Chang Cai
Overload limitation is carried out with the method for limiting motor maximum current, can not accurately limit maximum working load and equipment is carried out effective
Protection.
Utility model content
To solve problems of the prior art, it is more scientific and reasonable that the utility model provides a kind of structure design
Electric pushrod.
The purpose of this utility model implements by the following technical programs：
A kind of electric pushrod, including driving mechanism, transmission mechanism and transfer bar mechanism, the driving mechanism output end and institute
It states transmission mechanism input terminal to be connected, the transmission mechanism output end is connected with the transfer bar mechanism input terminal, the transfer bar mechanism
Input terminal be gear clutch, be provided in gear clutch axle center and be fixedly connected with the gear forces and mechanism
Leading screw, outer tube is set outside the leading screw, the travel switch being connected with the driving mechanism is provided in the outer tube,
Inner tube is additionally provided on the leading screw, said inner tube is connect with the leading screw by nut, and said inner tube is driven in the leading screw
It is moved under dynamic along said inner tube is central axial, and contacting travel switchs the nut during the motion.
Further, said inner tube and the cross section outer rim of the outer tube are circle, and said inner tube and the outer tube are same
Axis is arranged.
Further, on the outer tube wall, it is provided with travel switch slot, the travel switch is arranged in the stroke
It switchs in slot.
Further, on the outer tube wall, it is provided with guide groove, the nut outer carries out axis along the guide groove
To movement.
Further, the gear clutch includes the axle sleeve being set on the leading screw, the axle sleeve and the silk
Thick stick is connected by flat key, outside the axle sleeve, is arranged with gear of output end, is arranged between the gear of output end and the axle sleeve
There is friction plate, friction force adjustment mechanism is additionally provided on the axle sleeve, the friction force adjustment mechanism is in axial direction to output end
Gear applies thrust.
Further, the friction force adjustment mechanism includes disk spring, and described disk spring one end is with setting in axle sleeve
On radial protrusion offset, the other end offsets with the gear of output end end face.
Further, the travel switch is two, and described two travel switches are separately positioned on the nut travel two
End.
Further, in said inner tube free end, it is provided with connector.
Further, lid is provided with outside the gear clutch, the outer tube passes through bearing block with the lid
Connection.
Further, being provided between the outer tube and the bearing block prevents the rotation stop pin of outer tube pivoting.
Electric pushrod disclosed in the utility model, scientific structure design is reasonable, passes through the outer tube and inner tube of electric pushrod
Using cylindrical outer shape, in outer tube setting limit outer tube bore elongated slot is arranged in travel switch mounting groove, travel switch
Inner and outer pipe is connect by bearing block with push rod babinet, the circular exterior cross-section of outer tube and bearing block circular inner hole are with outside merga pass
It is a series of rationally that threaded hole on end surfaces is fixed with bearing block, electric pushrod is equipped with clutch for overload protection etc.
Change structure design, ensures that electric pushrod has more stable safety, more wide applicability.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of electric pushrod disclosed in the utility model；
Fig. 2 is a kind of dimensional structure diagram of electric pushrod disclosed in the utility model；
Fig. 3 is a kind of electric pushrod middle gear clutch cross-sectional view disclosed in the utility model；
Fig. 4 is a kind of electric pushrod middle external tube end structure illustration disclosed in the utility model；
Wherein：
1- end connectors, 2- reduction box lower covers, 3- gears clutch (overload protection), 4- reduction box upper cover 5- bearings
Seat, 6- rotation stop pins, 7- plain thrust bearings, 8- outer tubes, 9- lower stroke switch, 10- nuts, 11- lead screws, 12- upper stroke switch,
13- inner tubes, 14- front tabs, 15- motors, 16- input end gears, 17- intermediate drive gears, 18- cables and connector, 19-
Reduction box casing, 20- switch collision block, 301- axle sleeves, 302- friction plates, 303- gear of output end, 304- butterfly springs, 305-
Flat key, 306- central shafts, 307- radial protrusions, 801- guide grooves, 802- end-face helicals hole, 803- travel switch slots, 804- stop
It ships and resell on another market hole.
Specific implementation mode
Specific embodiment of the present invention is described in detail with reference to specific embodiment.
As shown in Figs. 1-2, it the utility model discloses a kind of electric pushrod, including driving mechanism, transmission mechanism and pushes away
Linkage.In the present embodiment, driving mechanism is motor 15, and the output end of driving mechanism is the output shaft of motor, transmission mechanism
For reduction box, reduction box includes reduction box casing 19, the input terminal of reduction box is provided in reduction box casing 19, input terminal is
For input end gear 16, input end gear 16 is fixedly connected with the output shaft of motor 15, and intermediate biography is additionally provided in reduction box
Moving gear 17, input end gear 16 are engaged with intermediate drive gear 17.Intermediate drive gear 17 is the output end of reduction box.Subtracting
On fast tank shell 19, it is further fixedly arranged on the cable being connected with motor 15 and connector 18.
Transfer bar mechanism includes including lid, lid packet with transmission mechanism connection gear clutch 3, gear clutch 3
Upper cover 4 and lower cover 2 are included, in lid, as shown in figure 3, being provided with central shaft 306, sleeve 301 is arranged on central shaft 306,
Sleeve 301 is connect with central shaft 306 by flat key 305, and gear of output end 303, gear of output end are arranged on sleeve 301
It is provided with friction plate 302 between 301 inner face of 303 end faces and axle sleeve, frictional force is additionally provided on the axle sleeve 301 and adjusts machine
Structure, the friction force adjustment mechanism applies thrust in axial direction to gear of output end 303, specifically, the friction force adjustment mechanism
Including disk spring 304,304 one end of the disk spring offsets with the radial protrusion 307 being arranged on axle sleeve 301, the other end
It offsets with 303 end face of the gear of output end.It is only generated by friction plate 302 between gear of output end 303 and axle sleeve 301
Frictional force transmits movement and torque, the size of frictional force are determined by 304 pretightning force of disk spring being sleeved on axle sleeve 301.When adding
When the load on lead screw 11 is more than rated value, the contact surface between axle sleeve 301 and gear 303 will have skidded phenomenon, slow down
The torque of case intermediate drive gear 17 no longer increases.Wheel clutch 3 is used to limit the maximum thrust of push rod, speed reduction gear box
The afterbody gear of group is the gear of output end for driving lead screw 11 to rotate, and assembly space-time is sleeved on axle sleeve 301, no pretightning force shape
It is free to rotate when state.Type of drive is rubbed by the frictional force between gear face and 301 end face of axle sleeve being sleeved on lead screw
The size of towing force is determined by the pretightning force of disk spring.When 11 moment of resistance of lead screw is more than the driving moment that contact surface frictional force generates
When, it will be had skidded between gear and axle sleeve 301, output torque no longer increases, to limit maximum thrust.
Transfer bar mechanism further include with the integrally formed leading screw 11 of central axis, leading screw 11 be connected with central shaft 306 one
End is mounted on by 2 plain thrust bearings 7 on bearing block 5, and bearing block 5 is connect with the upper cover 4 of 3 lid of gear clutch
Setting, 5 side of bearing block are connect by screw with upper cover 4, and the other side is linked and packed with outer tube 8 by inside and outside seam allowance.Described
Outer tube 8 is set outside leading screw 11, rotation stop pin 6 makes outer tube 8 keep determining orientation with bearing block 5, and can limit the rotation of outer tube 8,
Outer tube 8 and bearing block 5 are connected and fixed by screw again.8 inside of outer tube is provided with guiding slot port 801, when lead screw 11 rotates, spiral shell
Mother 10 can only move axially along the guide groove 801 of outer tube.
As shown in figure 4,8 section outer rim of outer tube is circle, on 8 inner wall of outer tube, it is provided with guide groove 801 and travel switch
Slot 803, guide groove 801 are longitudinal elongated slot, and end face screw hole 802 and rotation stop pin hole are additionally provided on the inner wall of 8 end of outer tube
804.Electric pushrod with this kind of planform outer tube 8, outer tube 8 are positioned and are connect by inside and outside round seam allowance with bearing block 5；
Being provided on 8 end face of outer tube prevents the rotation stop pin hole 804 of rotation, and the corresponding position of 5 endoporus of bearing block is also machined with pin hole, position
Circumferentially rotating for outer tube 8 is limited in the rotation stop pin 6 in pin hole.
On leading screw 11, it is additionally provided with nut 10, nut 10 is threadedly coupled with leading screw 11, and the section of the nut 10 is T
Shape is arranged by screw thread in the outside of the smaller one end of 10 outer diameter of nut and is connected with inner tube 13, and inner tube 13 is coaxially set with outer tube 8
It sets, and the cross section outer wall of inner tube 13 is also circle.In the larger one end outer of 10 outer diameter of nut, leading in 8 inner wall of outer tube is set
Into slot 801, and the outer shape of the larger one end of 10 outer diameter of nut matches in guide groove 801 along shape, said inner tube
It is moved under leading screw driving along said inner tube is central axial.
As shown in Fig. 2, one end larger in 10 outer diameter of nut, is additionally provided with switch collision block 20, in the stroke of 8 inner wall of outer tube
It switchs in slot 801, is provided with travel switch, in the present embodiment, travel switch is two, including upper stroke switch 12 is under
Travel switch 9, two travel switches are separately positioned on 10 stroke both ends of the nut, and travel switch is reciprocal for limiting inner tube 13
Upper-lower Limit position when mobile.(the corresponding outer tube when lead screw 11 rotates, and nut 10 runs to lowermost end or outermost end position
Flexible most short and longest overhang), the 20 depression stroke switch contact of switch collision block on nut 10, the state of switch is (normally opened
Or normally closed) be changed, the start and stop of motor can be directly controlled.Or the output signal of switch on and off state is provided, by external electrical
Road controls motor start and stop, to realize the control to push rod stroke.
The end of electric pushrod is provided with the end connector 1 of connection；The front end of inner tube is provided with front tab 14,
It is connected through a screw thread with inner tube 13.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic
Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of electric pushrod, including driving mechanism, transmission mechanism and transfer bar mechanism, the driving mechanism output end with it is described
Transmission mechanism input terminal is connected, and the transmission mechanism output end is connected with the transfer bar mechanism input terminal, it is characterised in that：It is described
The input terminal of transfer bar mechanism is gear clutch, is provided with and the gear forces and mechanism in gear clutch axle center
Outer tube is arranged outside the leading screw in the leading screw being fixedly connected, and is provided in the outer tube and is connected with the driving mechanism
Travel switch is additionally provided with inner tube on the leading screw, and said inner tube is connect with the leading screw by nut, and said inner tube is in institute
It states and is moved under leading screw driving along said inner tube is central axial, and contacting travel switchs the nut during the motion.
2. a kind of electric pushrod according to claim 1, it is characterised in that：Outside the cross section of said inner tube and the outer tube
Edge is circle, and said inner tube is arranged with the outer coaxial tube.
3. a kind of electric pushrod according to claim 1, it is characterised in that：On the outer tube wall, it is provided with stroke
Slot is switched, the travel switch is arranged in the travel switch slot.
4. a kind of electric pushrod according to claim 1, it is characterised in that：On the outer tube wall, it is provided with guiding
Slot, the nut outer are moved axially along the guide groove.
5. a kind of electric pushrod according to claim 1, it is characterised in that：The gear clutch includes being set in institute
The axle sleeve on leading screw is stated, the axle sleeve is connect with the leading screw by flat key, outside the axle sleeve, is arranged with gear of output end,
It is provided with friction plate between the gear of output end and the axle sleeve, friction force adjustment mechanism is additionally provided on the axle sleeve,
The friction force adjustment mechanism applies thrust in axial direction to gear of output end.
6. a kind of electric pushrod according to claim 5, it is characterised in that：The friction force adjustment mechanism includes dish-shaped bullet
Spring, described disk spring one end offset with the radial protrusion being arranged on axle sleeve, the other end and gear of output end end face phase
It supports.
7. a kind of electric pushrod according to claim 1, it is characterised in that：The travel switch is two, described two
Travel switch is separately positioned on the nut travel both ends.
8. a kind of electric pushrod according to claim 1, it is characterised in that：In said inner tube free end, it is provided with connector.
9. a kind of electric pushrod according to claim 1, it is characterised in that：It is provided with lid outside the gear clutch
Body, the outer tube are connect with the lid by bearing block.
10. a kind of electric pushrod according to claim 9, it is characterised in that：It is set between the outer tube and the bearing block
Being equipped with prevents the rotation stop pin of outer tube pivoting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721399587.3U CN207796016U (en) | 2017-10-26 | 2017-10-26 | A kind of electric pushrod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721399587.3U CN207796016U (en) | 2017-10-26 | 2017-10-26 | A kind of electric pushrod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207796016U true CN207796016U (en) | 2018-08-31 |
Family
ID=63284679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721399587.3U Expired - Fee Related CN207796016U (en) | 2017-10-26 | 2017-10-26 | A kind of electric pushrod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207796016U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256894A (en) * | 2018-10-09 | 2019-01-22 | 北京理工大学 | A kind of gapless straight drive electric pushrod |
| CN109667903A (en) * | 2019-02-28 | 2019-04-23 | 长安大学 | A kind of cylinder guide colume type translation mechanism |
| CN110259903A (en) * | 2019-07-12 | 2019-09-20 | 惠州市汉泰科传动***有限公司 | Transmission device |
| CN110380571A (en) * | 2019-08-01 | 2019-10-25 | 株洲市沃尔新材料有限责任公司 | A kind of electric pushrod |
| CN112696473A (en) * | 2020-12-16 | 2021-04-23 | 武汉滨湖电子有限责任公司 | Leveling support leg |
| WO2021218689A1 (en) * | 2020-04-29 | 2021-11-04 | 浙江捷昌线性驱动科技股份有限公司 | Linear actuator with smooth clutch |
-
2017
- 2017-10-26 CN CN201721399587.3U patent/CN207796016U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256894A (en) * | 2018-10-09 | 2019-01-22 | 北京理工大学 | A kind of gapless straight drive electric pushrod |
| CN109667903A (en) * | 2019-02-28 | 2019-04-23 | 长安大学 | A kind of cylinder guide colume type translation mechanism |
| CN110259903A (en) * | 2019-07-12 | 2019-09-20 | 惠州市汉泰科传动***有限公司 | Transmission device |
| CN110259903B (en) * | 2019-07-12 | 2024-06-21 | 惠州市汉泰科传动***有限公司 | Transmission device |
| CN110380571A (en) * | 2019-08-01 | 2019-10-25 | 株洲市沃尔新材料有限责任公司 | A kind of electric pushrod |
| WO2021218689A1 (en) * | 2020-04-29 | 2021-11-04 | 浙江捷昌线性驱动科技股份有限公司 | Linear actuator with smooth clutch |
| US12013016B2 (en) | 2020-04-29 | 2024-06-18 | Zhejiang Jiecang Linear Motion Technology Co., Ltd. | Linear actuator |
| CN112696473A (en) * | 2020-12-16 | 2021-04-23 | 武汉滨湖电子有限责任公司 | Leveling support leg |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 |