CN110296308B - Extrusion is from automatic telescopic link structure of locking-type second grade - Google Patents
Extrusion is from automatic telescopic link structure of locking-type second grade Download PDFInfo
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- CN110296308B CN110296308B CN201910575501.5A CN201910575501A CN110296308B CN 110296308 B CN110296308 B CN 110296308B CN 201910575501 A CN201910575501 A CN 201910575501A CN 110296308 B CN110296308 B CN 110296308B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000013016 damping Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
- F16M11/30—Undercarriages for supports with one single telescoping pillar with co-moving side-struts
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Abstract
The invention relates to an extrusion self-locking type two-stage automatic telescopic rod structure which comprises a base, wherein one end of a first lead screw is rotatably connected in the base, and the first lead screw can rotate along the axis of the first lead screw; a first gear is sleeved outside the first lead screw, the first gear is provided with a threaded hole, the first lead screw penetrates through the threaded hole of the first gear, the first gear is rotatably installed in the supporting plate, a second gear and a third gear are rotatably installed in the supporting plate, and the first gear is respectively meshed with the second gear and the third gear; the second gear is provided with a threaded hole, a second lead screw is arranged in the threaded hole of the second gear, and the second lead screw penetrates through the second gear and the supporting plate; the third gear is fixedly connected with a third lead screw, and the third lead screw extends towards the direction far away from the base. The telescopic rod telescopic mechanism can utilize one motor to drive two telescopic rods to sequentially stretch, can realize the positioning between the telescopic rods in the stretching process of the telescopic rods, does not need to manually operate a damping piece or a positioning piece, and is convenient and quick.
Description
Technical Field
The invention belongs to the technical field of telescopic rods, and particularly relates to an extrusion self-locking type two-stage automatic telescopic rod structure.
Background
The telescopic rod is formed by sleeving 2 or more rod pieces, so that the telescopic rod has the characteristics of small contraction volume, convenience for carrying and storage, and capability of meeting the use length requirement after being unfolded. The telescopic rod has the advantages that the telescopic rod is widely applied in daily life of people, particularly when people use the mobile phone to self-shoot, the telescopic rod plays a great role, the shooting distance can be easily adjusted, and the telescopic rod which can have certain bearing capacity is adopted for the telescopic rack or used for supporting the clothes hanger.
The inventor thinks that: in the current common telescopic rod structure, especially 2-section telescopic rods, the damping parts between the loop rods are used for positioning the rod parts after being extended or contracted, or the positioning parts arranged at the end parts of the loop rods are used for positioning the rod parts after being extended or contracted.
No matter what structure is adopted, the manual operation mode is needed, or the multi-motor mode is adopted, and all levels of rod pieces are respectively driven to realize corresponding movement. On one hand, the two modes are time-consuming and labor-consuming in manual operation and very inconvenient; on the other hand, the multi-motor drive greatly improves the energy consumption, and the matching degree of each motor is also a problem to be considered by a designer, so that the telescopic rod is complex in design and manufacture and inconvenient to operate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an extrusion self-locking type two-stage automatic telescopic rod structure, two telescopic rods can be driven by one motor to sequentially extend and retract, positioning between the telescopic rods can be realized in the extension and retraction process of the telescopic rods, a damping piece or a positioning piece does not need to be manually operated, and the structure is convenient and quick.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an extrusion is from automatic telescopic link structure of locking-type second grade, includes the base, the one end of swivelling joint with first lead screw in the base, first lead screw can be followed self axis and rotated.
The outer sleeve of first lead screw is equipped with first gear, and first gear has the screw hole with self axis of rotation coincidence, and the screw hole in the first lead screw passes first gear, first gear rotation is installed in the backup pad, rotates in the backup pad and installs second gear and third gear, and first gear meshes with second gear, third gear respectively.
The second gear is provided with a threaded hole, a second lead screw is arranged in the threaded hole of the second gear, and the second lead screw penetrates through the second gear and the supporting plate.
Third gear and third lead screw fixed connection, third lead screw extend towards the direction of keeping away from the base, the outside cover of third lead screw is equipped with threaded sleeve, threaded sleeve and push pedal fixed connection, and the third lead screw passes the push pedal. One end of the second screw rod, which is far away from the second gear, is fixedly connected with the push plate;
the mode that the threaded hole of first gear and first lead screw cooperation were used is adopted, and first gear outside respectively with second gear and third gear meshing, when rotating required moment of torsion great between first gear and first lead screw, first gear can rotate along with first lead screw, the rotation of gear meshing drive second gear and third gear, and then realize the linear motion of push pedal.
After the push plate is fixed, the second lead screw and the third lead screw cannot rotate, the second gear and the third gear are fixed, the first gear cannot rotate with the second gear and the third gear, and the first gear can rotate relative to the first lead screw.
Namely, at different moments, the motion states of the first gear and the first lead screw are different, and the effect of respectively driving the push plate and the support plate to do linear motion can be realized.
The fixed first wedge sleeve that is equipped with of terminal surface that the base was kept away from to the second gear, the terminal surface that the push pedal is close to the base is equipped with first wedge piece, and first wedge piece can peg graft with first wedge sleeve, the terminal surface that the base was kept away from to the push pedal is equipped with second wedge sleeve, and the one end that the base was kept away from to the third lead screw is fixed and is equipped with the second wedge piece, and the second wedge piece can peg graft with second wedge sleeve.
The first wedge-shaped sleeve and the first wedge-shaped piece are matched for use, and the second wedge-shaped sleeve and the second wedge-shaped piece are matched for use, the first wedge-shaped piece and the second wedge-shaped piece are respectively arranged on two side surfaces of the push plate and can move along with the push plate, when the push plate is close to the support plate or one end of the third lead screw, which is far away from the support plate, is close to the support plate, the first wedge-shaped sleeve or the second wedge-shaped sleeve can be used for positioning the push plate, and the second gear and the third gear are clamped; so that the first gear can obtain enough torque to realize the relative rotation between the first gear and the first lead screw.
The base is fixedly connected with the bottom rectangular cylinder, the bottom rectangular cylinder sleeve is arranged outside the first lead screw, the supporting plate is fixedly connected with the one-level rectangular cylinder, the pushing plate is fixedly connected with the second-level rectangular cylinder, the one-level rectangular cylinder sleeve is arranged inside the bottom rectangular cylinder, the one-level rectangular cylinder can stretch out and draw back from the bottom rectangular cylinder, the second-level rectangular cylinder sleeve is arranged inside the one-level rectangular cylinder, and the second-level rectangular cylinder can stretch out and draw back along the one-level rectangular cylinder.
The bottom rectangular cylinder, the first-level rectangular cylinder and the second-level rectangular cylinder are matched for use, so that the guide of the push plate and the support plate in the motion process can be realized, the support plate can realize linear motion under the drive of the first screw rod, and the push plate can realize linear motion under the drive of the second screw rod and the third screw rod.
Further, a driving device is arranged in the base and can drive the first lead screw to rotate.
Further, drive arrangement includes that casing fixed mounting is on the motor of base, the output shaft and the pivot fixed connection of motor, the axis mutually perpendicular of pivot and first lead screw, the fixed cover in outside of pivot is equipped with first bevel gear, the one end that first lead screw is close to the base is equipped with the second bevel gear, first bevel gear and second bevel gear meshing.
The motor, the rotating shaft, the first bevel gear and the second bevel gear are matched for use, so that the rotation direction of the output shaft of the motor is perpendicular to the rotation central axis of the first screw rod.
Further, the backup pad includes fixed connection's first backup pad and second backup pad, be equipped with the mounting groove in the second backup pad is close to the terminal surface of first backup pad, install in the mounting groove first gear, second gear and third gear.
Adopt the mode that first backup pad and second backup pad cooperation were used, set up the mounting groove in the second backup pad, can realize the axial positioning of first gear, second gear and third gear in the backup pad, guarantee first gear respectively with second gear, third gear engagement.
The invention has the beneficial effects that:
the mode that the threaded hole of the first gear is matched with the first lead screw is adopted, the outside of the first gear is respectively meshed with the second gear and the third gear, when the torque required by rotation between the first gear and the first lead screw is larger than the actual torque between the first gear and the first lead screw, the first gear can rotate along with the first lead screw, the gears are meshed to drive the second gear and the third gear to rotate, and then the linear motion of the push plate is realized.
After the second gear and the third gear are fixed, the first gear cannot rotate with the second gear and the third gear, and the torque between the first gear and the first lead screw is increased until relative rotation occurs.
Namely, at different moments, the motion states of the first gear and the first lead screw are different, and the effect of respectively driving the push plate and the support plate to do linear motion can be realized.
The first wedge-shaped sleeve is matched with the first wedge-shaped piece for use, and the second wedge-shaped sleeve is matched with the second wedge-shaped piece for use, the first wedge-shaped piece and the second wedge-shaped piece are respectively arranged on two side surfaces of the push plate and can move along with the push plate, when the push plate is close to the support plate or one end of the third lead screw, which is far away from the support plate, the positioning of the push plate can be realized, and the blocking of the second gear and the third gear is further realized; so that the first gear can obtain enough torque to realize the relative rotation between the first gear and the first lead screw.
The bottom rectangular cylinder, the first-level rectangular cylinder and the second-level rectangular cylinder are matched for use, so that the guide of the push plate and the support plate in the motion process can be realized, the support plate can realize linear motion under the drive of the first screw rod, and the push plate can realize linear motion under the drive of the second screw rod and the third screw rod.
Adopt the mode that first backup pad and second backup pad cooperation were used, set up the mounting groove in the second backup pad, can realize the axial positioning of first gear, second gear and third gear in the backup pad, guarantee first gear respectively with second gear, third gear engagement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of the present invention with the bottom rectangular cylinder removed;
FIG. 3 is an enlarged view of the portion I in FIG. 2;
FIG. 4 is an enlarged view of FIG. 2 with a portion II of the second support plate removed;
FIG. 5 is an enlarged view of the structure of part III in FIG. 2;
FIG. 6 is a schematic view of the configuration of the first wedge-shaped member or the second wedge-shaped member in an embodiment of the present invention;
FIG. 7 is a schematic view of the construction of the first wedge sleeve or the second wedge sleeve in an embodiment of the invention.
In the figure: 1. a base; 2. a bottom rectangular cylinder; 3. a primary rectangular cylinder; 4. a secondary rectangular cylinder; 5. a servo motor; 6. a first bevel gear; 7. a rotating shaft; 8. a second bevel gear; 9. a fixing device; 10. a first lead screw; 11. a first support plate; 12. a second support plate; 13. a second lead screw; 14. a third lead screw; 15. pushing the plate; 151. a threaded sleeve; 152. a first wedge-shaped member; 153. a first connecting plate; 154. a bolt; 155. a second wedge sleeve; 16. a fixing plate; 161. a second wedge-shaped member; 162. a second connecting plate; 163. an end cap; 17. a second gear; 18. a limit retainer ring; 19. a first wedge sleeve; 20. a first gear; 21. a third gear; 22. a coupling is provided.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide a preferred description of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be pointed out that, the hole of first gear and second gear in this application is the screw hole, and the screw hole sets up with the axle center with the gear excircle, and the screw hole is used for cooperating the lead screw, consequently, first gear and second gear can have the function of gear and nut.
In a typical embodiment of the present invention, as shown in fig. 1 to 7, an extrusion self-locking type two-stage automatic telescopic rod structure comprises a base 1, wherein one end of a first lead screw 10 is rotatably connected in the base 1, the first lead screw 10 can rotate along its own axis, specifically, the first lead screw 10 is a cross-shaped threaded lead screw, the form of the cross-shaped threaded lead screw is a cross-shaped solid lead screw, the cross-section of the cross-shaped threaded lead screw is cross-shaped, and a thread is engraved at a cross-shaped protruding portion of the cross-shaped threaded lead screw for meshing transmission with a first gear 20.
The outer sleeve of first lead screw 10 is equipped with first gear 20, and first lead screw 10 passes the screw hole of first gear 20, first gear 20 rotates and installs in the backup pad, rotates in the backup pad and installs second gear 17 and third gear 21, and first gear 20 meshes with second gear 17, third gear 21 respectively.
Specifically, the first gear 20, the second gear 17, and the third gear 21 are spur gears, respectively.
The second gear 17 is provided with a threaded hole, a second lead screw 13 is arranged in the threaded hole of the second gear 17, and the second lead screw 13 penetrates through the second gear 17 and the supporting plate.
And one end of the second screw rod, which is far away from the second gear, is fixedly connected with the push plate.
The end face, far away from the base 1, of the second gear 17 is fixedly provided with a first wedge-shaped sleeve 19, and a limiting retainer ring 18 and the first wedge-shaped sleeve are fixed on the surface of the second support plate 12 and used for limiting the axial movement of the second gear 17 and increasing the stability. The end face, close to the base 1, of the push plate 15 is fixedly provided with a first wedge-shaped member 152, the first wedge-shaped member is sleeved outside the second lead screw, and the first wedge-shaped member 152 can be inserted into the first wedge-shaped sleeve 19.
The main body component of the push plate is a first connecting plate 153, two mounting holes are formed in the first connecting plate 153, and the two mounting holes are used for mounting the threaded sleeve 15 and the first wedge 152 respectively, and the first connecting plate and the first wedge 152 are fixedly connected. In some embodiments, the bolt 154 is fixedly coupled to the second lead screw 13 through an aperture therebetween.
The fixed second wedge sleeve 155 that is equipped with of terminal surface that the base 1 was kept away from to push pedal 15, second wedge 155 cover is established at the third lead screw outside, and the one end that the base 1 was kept away from to the third lead screw is fixed and is equipped with second wedge 161, and second wedge 161 can peg graft with second wedge sleeve 155.
A driving device is arranged in the base 1, and the driving device can drive the first lead screw 10 to rotate.
The driving device comprises a motor fixedly installed on the base 1 through a machine shell, an output shaft of the motor is fixedly connected with a rotating shaft 7, the rotating shaft 7 is perpendicular to the axis of a first lead screw 10, a first bevel gear 6 is fixedly installed on the outer portion of the rotating shaft 7, a second bevel gear 8 is arranged at one end, close to the base 1, of the first lead screw 10, and the first bevel gear 6 is meshed with the second bevel gear 8.
Specifically, the motor is servo motor 5, base 1 includes fixing device 9, fixing device 9 is U type structure, fixing device 9 rotates with first lead screw 10 through the bearing spare and is connected, fixing device 9's outside and servo motor 5's shell fixed connection, servo motor 5's output shaft is fixed a position through two vertical sections of fixed knot structure.
The backup pad includes fixed connection's first backup pad 11 and second backup pad 12, second backup pad 12 is equipped with the mounting groove in being close to first backup pad 11's the terminal surface, install in the mounting groove first gear 20, second gear 17 and third gear 21.
Specifically, the distance between the bottom end surface of the mounting groove and the first support plate 11 is greater than the thickness of the first gear 20, the second gear 17 and the third gear 21.
And a fixing plate 16 is fixedly arranged at one end of the third lead screw 14 far away from the base 1, and the second wedge 161 is fixedly arranged on the end surface of the fixing plate 16 close to the base 1.
The main structure of the fixing plate 16 is a second connecting plate 162, the second connecting plate is provided with two through holes, one through hole is used for fixedly mounting a second wedge 161, and the other through hole is coaxially arranged with the second lead screw and is used for accommodating a bolt protruding out of the second connecting plate and the first wedge.
The end face, far away from the threaded sleeve, of the fixing plate is provided with an end cover, and the end cover is sleeved outside the second wedge piece and used for protecting the second wedge piece.
One end of the first lead screw 10 close to the base 1 is a first smooth section, and the first smooth section penetrates through the base 1 and is rotatably connected with the base 1 through a bearing piece.
The third gear 21 and the third lead screw 14 are fixedly connected through a coupler 22.
One end of the second lead screw 13 close to the push plate 15 is a second smooth section, and the second smooth section penetrates through the push plate 15 and realizes the rotary connection of the push plate 15 and the second lead screw 13 through a bearing piece.
The first wedge member 152 and the second wedge member 161 are constructed in a manner that four wedge-shaped grooves are dug at equal intervals on a hollow cylinder having a certain thickness for connection.
Specifically, the first wedge sleeve 19 and the second wedge sleeve 155 are constructed by cutting out a portion symmetrical to the wedge groove on a hollow cylinder having a certain thickness, so that four wedge protrusions are finally left to be inserted into the wedge grooves of the wedge members.
The working principle is as follows: when the telescopic rod is to be extended:
the servo motor 5 is started to drive the rotating shaft 7 to rotate, the first bevel gear 6 is driven to rotate, the first bevel gear 6 is meshed with the second bevel gear 8 to transmit power, the second bevel gear 8 transmits the power to the first gear through the first lead screw, and at the moment, the first gear 20 is meshed with the second gear 17 and the third gear 21 simultaneously. Because the first gear 20 is not completely fixed and bears small axial thrust, the axial translation is not enough to be carried out along with the rotation of the first lead screw 10 by means of the screw thread, namely the torque required for driving the rotation between the first gear 20 and the first lead screw 10 is larger than the torque required for driving the rotation of the second gear and the third gear by the first gear, therefore, the first gear 20 can rotate along with the first lead screw 10, along with the rotation of the first gear 20, the second gear 17 and the third gear 21 are stressed to further rotate, wherein the second gear 17 contains the screw thread and is axially fixed, therefore, the second lead screw 13 carries out the axial translation through the screw thread connection, meanwhile, the third gear 21 drives the third lead screw 14 to rotate together through the coupler 22, at the moment, the threaded sleeve 151 arranged on the push plate 15 is in the screw thread connection with the third lead screw 14, and because the push plate 15 is radially subjected to the constraint force, the axial translation only, therefore, when the servo motor 5 is started, the push plate 15 generates axial displacement along with the axial translation of the second lead screw 13 and the rotation of the third lead screw 14, and drives the secondary rectangular cylinder 4 to translate, at this time, the primary rectangular cylinder 3 is static, and the secondary rectangular cylinder 4 stretches out at a constant speed.
Along with the translation of the second-level rectangular cylinder 4, the threaded sleeve 151 installed on the push plate 15 is gradually close to the fixing plate 16, when the threaded sleeve 151 moves into the second wedge 161, the wedge-shaped protrusion is inserted into the wedge-shaped groove, the push plate 15 is locked by being extruded, at this time, the second lead screw 13 cannot axially translate due to the self-locking of the push plate 15, the third lead screw 14 cannot rotate, the second gear 17 and the third gear 21 cannot rotate, and then the first gear 20 cannot rotate due to opposite loads. Because the first gear 20 is fixed by force, the rotating first lead screw 10 generates sufficient axial thrust to the first gear 20 through threads, so that the first gear 20 is changed from rotation to axial translation, the first support plate 11 and the second support plate 12 are driven to perform axial translation, and the first-stage rectangular cylinder 3 can move at a constant speed because of being connected with the second support plate 12. At the moment, the second-level rectangular cylinder 4 is static, and the first-level rectangular cylinder 3 extends out, so that the extension of the second-level telescopic rod is completed.
In the same way, when the telescopic rod needs to be contracted:
5 reverse motion of servo motor, threaded sleeve 151 and second wedge piece 161 in the second grade rectangular cylinder 4 keep away from each other, the reverse translation of push pedal 15, the uniform velocity shrink of second grade rectangular cylinder 4, when first wedge sleeve 19 and the first wedge piece 152 cooperation on the push pedal 15, push pedal 15 stops the translation, the shrink is also stopped to second grade rectangular cylinder 4, at this moment, first gear 20 receives reverse axial thrust, and then become reverse translation by rotating, and then drive first backup pad 11, 12 reverse movements of second backup pad, the corresponding shrink that contracts of one-level rectangular cylinder 3, accomplish the shrink of second grade telescopic link.
In the process, the second gear 17 and the third gear 21 are self-locked by utilizing the extrusion of the threaded sleeve 151 and the wedge, so that the first gear 20 is converted between rotation and axial translation, and the two-stage telescopic rod is directly driven by a single power supply.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. An extrusion self-locking type two-stage automatic telescopic rod structure is characterized by comprising a base, wherein one end of a first lead screw is rotatably connected in the base, and the first lead screw can rotate along the axis of the first lead screw;
a first gear is sleeved outside the first lead screw, the first gear is provided with a threaded hole, the first lead screw penetrates through the threaded hole of the first gear, the first gear is rotatably installed in the supporting plate, a second gear and a third gear are rotatably installed in the supporting plate, and the first gear is respectively meshed with the second gear and the third gear;
the second gear is provided with a threaded hole, a second lead screw is arranged in the threaded hole of the second gear, and the second lead screw penetrates through the second gear and the supporting plate;
the third gear is fixedly connected with a third lead screw, the third lead screw extends towards the direction far away from the base, a threaded sleeve is sleeved outside the third lead screw, the threaded sleeve is fixedly connected with the push plate, and the second lead screw penetrates through the push plate;
one end of the second screw rod, which is far away from the second gear, is fixedly connected with the push plate;
a first wedge-shaped sleeve is fixedly arranged on the end face, away from the base, of the second gear, a first wedge-shaped piece is arranged on the end face, close to the base, of the push plate, the first wedge-shaped piece can be connected with the first wedge-shaped sleeve in an inserting mode, a second wedge-shaped sleeve is arranged on the end face, away from the base, of the push plate, a second wedge-shaped piece is fixedly arranged on one end, away from the base, of the third screw, and the second wedge-shaped piece can be;
the base is fixedly connected with the bottom rectangular cylinder, the bottom rectangular cylinder is sleeved outside the first screw rod, the supporting plate is fixedly connected with the primary rectangular cylinder, the pushing plate is fixedly connected with the secondary rectangular cylinder, the primary rectangular cylinder is sleeved inside the bottom rectangular cylinder, and the secondary rectangular cylinder is sleeved inside the primary rectangular cylinder;
the first lead screw is a cross-shaped thread lead screw, the first lead screw is a cross-shaped solid lead screw, the cross section of the first lead screw is cross-shaped, and threads are engraved on a cross-shaped protruding part of the first lead screw and are used for being in meshing transmission with the first gear.
2. The extruded self-locking two-stage automatic telescopic rod structure of claim 1, wherein a driving device is arranged in the base, and the driving device can drive the first lead screw to rotate.
3. The extrusion self-locking type two-stage automatic telescopic rod structure of claim 2, wherein the driving device comprises a motor fixedly installed on the base, an output shaft of the motor is fixedly connected with a rotating shaft, the rotating shaft is perpendicular to an axis of the first lead screw, a first bevel gear is fixedly sleeved outside the rotating shaft, a second bevel gear is arranged at one end of the first lead screw close to the base, and the first bevel gear is meshed with the second bevel gear.
4. The extruded self-locking type two-stage automatic telescopic rod structure of claim 1, wherein the supporting plate comprises a first supporting plate and a second supporting plate which are fixedly connected, an installation groove is arranged in the end surface of the second supporting plate close to the first supporting plate, and the first gear, the second gear and the third gear are installed in the installation groove.
5. The extrusion self-locking type two-stage automatic telescopic rod structure of claim 1, wherein a fixing plate is fixedly arranged at one end of the third screw rod, which is far away from the base, and the second wedge-shaped piece is fixedly arranged at the end surface of the fixing plate, which is close to the base.
6. The extruded self-locking two-stage automatic telescopic rod structure of claim 1, wherein one end of the first lead screw close to the base is a first smooth section, and the first smooth section passes through the base and is rotatably connected with the base through a bearing member.
7. The extrusion self-locking type two-stage automatic telescopic rod structure of claim 1, wherein the third gear is fixedly connected with the third lead screw through a coupler.
8. The extrusion self-locking type two-stage automatic telescopic rod structure of claim 1, wherein one end of the second lead screw close to the push plate is a second smooth section, and the second smooth section passes through the push plate and realizes the rotary connection of the push plate and the second lead screw through a bearing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575501.5A CN110296308B (en) | 2019-06-28 | 2019-06-28 | Extrusion is from automatic telescopic link structure of locking-type second grade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575501.5A CN110296308B (en) | 2019-06-28 | 2019-06-28 | Extrusion is from automatic telescopic link structure of locking-type second grade |
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| CN110296308A CN110296308A (en) | 2019-10-01 |
| CN110296308B true CN110296308B (en) | 2020-08-04 |
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| CN111452622A (en) * | 2020-03-05 | 2020-07-28 | 北京航空航天大学 | Vehicle-mounted solar system and vehicle |
| CN111924137B (en) * | 2020-08-18 | 2022-02-15 | 天津航天机电设备研究所 | Miniaturized scalable mechanism capable of being produced in batches |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900932Y (en) * | 2006-05-10 | 2007-05-16 | 东莞堤摩讯传动科技有限公司 | Parallel double guide screw lift device |
| CN2918892Y (en) * | 2006-07-11 | 2007-07-04 | 东莞堤摩讯传动科技有限公司 | Double guide screw lifting gear |
| CN202176687U (en) * | 2011-07-28 | 2012-03-28 | 成都慧拓自动控制技术有限公司 | Multi-stage linkage driving telescopic push rod device |
| CN202299832U (en) * | 2011-11-11 | 2012-07-04 | 杭州三园工具有限公司 | Vertical hinged door machine transmission device |
| WO2015086786A2 (en) * | 2013-12-11 | 2015-06-18 | Centre National De La Recherche Scientifique (Cnrs) | Linear actuator for supporting a load and hexapod comprising such actuators |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3315154B1 (en) * | 2016-10-28 | 2021-07-07 | maxon international ag | Two-stage telescopic spindle drive |
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2019
- 2019-06-28 CN CN201910575501.5A patent/CN110296308B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900932Y (en) * | 2006-05-10 | 2007-05-16 | 东莞堤摩讯传动科技有限公司 | Parallel double guide screw lift device |
| CN2918892Y (en) * | 2006-07-11 | 2007-07-04 | 东莞堤摩讯传动科技有限公司 | Double guide screw lifting gear |
| CN202176687U (en) * | 2011-07-28 | 2012-03-28 | 成都慧拓自动控制技术有限公司 | Multi-stage linkage driving telescopic push rod device |
| CN202299832U (en) * | 2011-11-11 | 2012-07-04 | 杭州三园工具有限公司 | Vertical hinged door machine transmission device |
| WO2015086786A2 (en) * | 2013-12-11 | 2015-06-18 | Centre National De La Recherche Scientifique (Cnrs) | Linear actuator for supporting a load and hexapod comprising such actuators |
Also Published As
| Publication number | Publication date |
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| CN110296308A (en) | 2019-10-01 |
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