CN110848529A - Transmission assembly and lifting upright column applied by same - Google Patents
Transmission assembly and lifting upright column applied by same Download PDFInfo
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- CN110848529A CN110848529A CN201911044775.8A CN201911044775A CN110848529A CN 110848529 A CN110848529 A CN 110848529A CN 201911044775 A CN201911044775 A CN 201911044775A CN 110848529 A CN110848529 A CN 110848529A
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- connecting seat
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 154
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 210000001503 joint Anatomy 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000037431 insertion Effects 0.000 description 8
- 238000003780 insertion Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/04—Tables with tops of variable height with vertical spindle
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/20—Telescopic guides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a transmission assembly and a lifting upright post applied by the same, comprising a transmission pipe; the first wire tube can rotate synchronously with the transmission tube, the first wire tube and the rotating tube can relatively slide along the axial direction to generate displacement, and a first transmission nut is connected to the first wire tube in a threaded manner; the second wire tube can synchronously rotate with the first wire tube, the second wire tube and the first wire tube can relatively slide along the axial direction to generate displacement, a second transmission nut is connected on the second wire tube in a threaded manner, and a first connecting seat capable of limiting the second transmission nut to rotate is connected on the second transmission nut; the lead screw can rotate synchronously with the second wire tube, the lead screw and the second wire tube can relatively slide along the axial direction to generate displacement, the lead screw is in threaded connection with a third transmission nut, and the third transmission nut is connected with a second connecting seat capable of limiting the rotation of the third transmission nut. The transmission assembly and the lifting upright column applied by the transmission assembly can increase the stroke of the lifting upright column.
Description
Technical Field
The invention relates to the technical field of mechanical transmission devices, in particular to a transmission assembly and a lifting upright post applied to the transmission assembly.
Background
The lifting upright column in the prior art generally comprises a driving mechanism, an inner tube, a middle tube and an outer tube which are nested with each other and can relatively move and stretch, the upper end of the inner tube is connected with a shell of the driving mechanism, and the lower end of the outer tube is contacted with the ground; the inner tube is internally provided with a transmission assembly, the transmission assembly comprises a square supporting tube, a first base is connected in an inner hole at the upper end of the supporting tube, a screw rod is connected in a central hole of the first base in a threaded manner, and the first base and the supporting tube move along the length direction of the screw rod under the rotation of the screw rod; the supporting tube is in sliding fit with a square tube sleeved on the screw rod, the lower end of the square tube is connected with the lower end of the outer tube through a connecting plate, a second base is connected in an inner hole of the square tube, a wire tube sleeved on the screw rod is connected in a central hole of the second base in a threaded manner, the wire tube and the screw rod rotate synchronously, and the wire tube can slide relative to the screw rod; the driving mechanism drives the screw rod to rotate, so that the supporting tube and the first base move along the axial direction of the screw rod, and meanwhile, the screw tube rotates to enable the square tube and the second base to move along the length direction of the supporting tube, so that the expansion and contraction of the inner tube and the outer tube of the lifting upright post are realized; in order to realize the maximization of the stroke, the transmission assembly is realized by matching two pipe fittings, namely by mutually sleeving the supporting pipe and the square pipe and relatively moving the supporting pipe and the square pipe; however, the transmission assembly still far fails to satisfy the requirement of maximizing the stroke of the lifting column, and therefore, how to provide a transmission assembly capable of maximizing the stroke of the lifting column is a technical problem to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provide a transmission assembly which can increase the stroke of a lifting upright and meet the requirement of people on the maximum stroke of the lifting upright.
The technical scheme of the invention is to provide a transmission assembly with the following structure: it comprises
The transmission pipe is in transmission connection with the driving mechanism;
the outer side wall of the first wire tube is provided with external threads and is positioned in the transmission tube, the first wire tube can synchronously rotate with the transmission tube, the first wire tube and the transmission tube can relatively slide along the axial direction to generate displacement, and a first transmission nut is connected to the first wire tube in a threaded manner;
the outer side wall of the second wire tube is provided with external threads and is positioned in the first wire tube, the second wire tube can synchronously rotate with the first wire tube, the second wire tube and the first wire tube can relatively slide along the axial direction to generate displacement, a second transmission nut is connected to the second wire tube in a threaded manner, and a first connecting seat capable of limiting the second transmission nut to rotate is connected to the second transmission nut;
the lead screw is positioned in the second wire tube, the lead screw can synchronously rotate with the second wire tube, the lead screw and the second wire tube can relatively slide along the axial direction to generate displacement, the lead screw is in threaded connection with a third transmission nut, and the third transmission nut is connected with a second connecting seat capable of limiting the third transmission nut to rotate.
Preferably, the first wire tube is sleeved with a first bearing, and the first bearing is fixedly connected in the first connecting seat and used for enabling the first wire tube to be rotatably connected with the first connecting seat through the first bearing and enabling the first wire tube and the first connecting seat to move synchronously along the axial direction.
Preferably, the second wire tube is sleeved with a second bearing, and the second bearing is fixedly connected in the second connecting seat and used for enabling the second wire tube to be rotatably connected with the second connecting seat through the second bearing and enabling the second wire tube and the second connecting seat to move synchronously along the axial direction.
Preferably, a plurality of sliding grooves which extend along the axial direction of the transmission pipe and are distributed along the circumferential direction of the transmission pipe are arranged on the inner circumferential wall of the transmission pipe; the outer side wall of the first wire pipe is sleeved with a first sliding block, the outer circumferential wall of the first sliding block is provided with a radial convex block correspondingly clamped with the sliding groove on the inner circumferential wall of the transmission pipe, and the outer side wall of the radial convex block on the first sliding block is in clearance fit with the inner wall of the sliding groove on the transmission pipe; the outer side wall of the second wire pipe is sleeved with a second sliding block, the outer circumferential wall of the second sliding block is provided with a radial bump correspondingly clamped with the sliding groove on the inner circumferential wall of the first wire pipe, and the outer side wall of the radial bump on the second sliding block is in clearance fit with the inner wall of the sliding groove on the first wire pipe; the outer side wall of the screw rod is sleeved with a third sliding block, the outer circumferential wall of the third sliding block is provided with a radial convex block which is correspondingly clamped with the sliding groove on the inner circumferential wall of the second wire tube, and the outer side wall of the radial convex block on the screw rod is in clearance fit with the inner wall of the sliding groove on the second wire tube.
Preferably, the first connecting seat comprises a first left connecting seat and a first right connecting seat which are mutually butted, a first jack and a first inserting column are arranged on a butt joint face of the first left connecting seat, a second jack and a second inserting column are arranged on a butt joint face of the first right connecting seat, the first inserting column is spliced with the second jack after the first left connecting seat and the first right connecting seat are butted, and the second inserting column is spliced with the first jack.
Preferably, the second connecting seat includes the left connecting seat of second and the right connecting seat of second that butt joint each other, be equipped with first jack and first post of inserting on the butt joint face of the left connecting seat of second, be equipped with second jack and second on the butt joint face of the right connecting seat of second and insert the post, the left connecting seat of second and the right connecting seat of second butt joint back, first post and the second jack of inserting are pegged graft, the post is pegged graft with first jack to the second.
Preferably, a first accommodating groove for accommodating the first bearing is formed in one end, close to the first wire tube, of the first connecting seat, the first bearing is connected in the first accommodating groove, and an inner ring of the first bearing is fixedly sleeved on a step surface at the end part of the first wire tube.
Preferably, a second accommodating groove for accommodating a second bearing is formed in one end, close to the second wire tube, of the second connecting seat, the second bearing is connected in the second accommodating groove, and an inner ring of the second bearing is fixedly sleeved on a step surface at the end part of the second wire tube.
After adopting the structure, compared with the prior art, the transmission assembly has the following advantages:
1. the transmission assembly is composed of a transmission tube, a first wire tube, a second wire tube and a lead screw which are sequentially sleeved from outside to inside, wherein the transmission tube, the first wire tube, the second wire tube and the lead screw can synchronously rotate and can relatively slide to generate displacement; therefore, the stroke of the transmission assembly is large, in other words, when the transmission tube, the first wire tube, the second wire tube and the lead screw of the transmission assembly slide relatively and are completely contracted, the whole length is short, so that the stroke of the transmission assembly is large; that is, compared with the prior art transmission assembly, under the condition that the fully-expanded heights of the transmission assemblies are equal, the length of the transmission assembly of the invention when being fully contracted is far smaller than that of the prior art transmission assembly; in other words, with the same fully retracted height of the transmission assembly, the length of the transmission assembly of the present invention when fully extended is much greater than the length of the transmission assembly of the prior art when fully extended; the travel of the transmission assembly of the present invention is therefore relatively large. The transmission assembly can increase the stroke of the lifting upright column, and meets the requirement of people on the stroke maximization of the lifting upright column.
2. The driving mechanism drives the transmission pipe to rotate, so that the first wire pipe, the second wire pipe and the lead screw synchronously rotate along with the transmission pipe, under the condition that the first transmission nut, the second transmission nut and the third transmission nut are limited to rotate, the first wire pipe can relatively slide along the axial direction relative to the transmission pipe to generate displacement, the second wire pipe can relatively slide along the axial direction relative to the first wire pipe to generate displacement, and the lead screw can relatively slide along the axial direction relative to the second wire pipe to generate displacement, so that the telescopic action of the transmission assembly is realized; the arrangement makes the relative sliding of the first wire tube relative to the transmission tube, the relative sliding of the second wire tube relative to the first wire tube and the relative sliding of the lead screw relative to the second wire tube more stable and compact, and improves the stability of the action of the transmission assembly.
3. The first wire tube is rotatably connected with the first connecting seat through the first bearing and enables the first wire tube and the first connecting seat to move synchronously along the axial direction, and the second wire tube is rotatably connected with the second connecting seat through the second bearing and enables the second wire tube and the second connecting seat to move synchronously along the axial direction. The arrangement further improves the stability of the action of the transmission assembly.
4. First connecting seat is through first left connecting seat and the butt joint of first right connecting seat to and the second connecting seat passes through the butt joint of second left connecting seat and second right connecting seat, thereby restriction second drive nut and third drive nut are rotatory, set up like this, make being connected between first connecting seat and the second drive nut, and be connected between second connecting seat and the third drive nut more convenient, need not to use hand tool can accomplish the installation, improved the installation effectiveness. And the installation between the first connecting seat and the first bearing and the installation between the second connecting seat and the second bearing are very convenient.
Another technical solution of the present invention is to provide a lifting column having the following structure, which comprises a first vertical pipe, a second vertical pipe, a third vertical pipe and a fourth vertical pipe, which are sequentially sleeved from inside to outside, a housing fixedly connected to an upper end of the first vertical pipe, a driving mechanism disposed in the housing, and a transmission assembly in transmission connection with the driving mechanism, wherein the transmission assembly adopts the transmission assembly according to any one of the above technical solutions; the driving mechanism is in transmission connection with the transmission pipe, the first transmission nut is connected with the first vertical pipe, the first connecting seat is connected with the second vertical pipe, and the second connecting seat is connected with the third vertical pipe; the lower end of the fourth vertical pipe is fixedly connected with a fixing plate, the lower end of the lead screw is rotatably connected to the fixing plate, and the lower end of the lead screw is axially limited on the fixing plate.
Preferably, one end of the transmission pipe close to the driving mechanism is fixedly connected with a driving rod with an axis coaxial with the transmission pipe, the driving rod is rotatably connected to the bottom of the shell, and the free end of the driving rod is arranged in the shell and is in transmission connection with the driving mechanism in the shell.
After adopting the structure, compared with the prior art, the lifting upright post has the following advantages: the lifting upright post adopts the transmission assembly in any technical scheme, so that the stroke of the lifting upright post is increased, and the stroke maximization requirement of people on the lifting upright post is met.
Drawings
FIG. 1 is a schematic diagram of a drive assembly of the present invention.
FIG. 2 is a schematic cross-sectional view of a transmission assembly according to the present invention.
FIG. 3 is a schematic view of an assembly structure of a transmission assembly according to the present invention.
FIG. 4 is a schematic view of another angle assembly of a transmission assembly according to the present invention.
Fig. 5 is a schematic structural diagram of the lifting column of the present invention.
Fig. 6 is a schematic sectional structure view of the lifting column of the present invention.
As shown in the figure:
1. the driving device comprises a driving pipe, 100, a sliding groove, 2, a first wire pipe, 200, a step surface, 201, a first sliding block, 3, a second wire pipe, 300, a step surface, 301, a second sliding block, 4, a lead screw, 5, a first driving nut, 500, a second driving nut, 501, a third driving nut, 502, a fixing plate, 503, a shaft sleeve, 6, a first connecting seat, 600, a second connecting seat, 601, a first accommodating groove, 602, a second accommodating groove, 603, a first left connecting seat, 604, a first right connecting seat, 605, a first inserting column, 606, a first inserting hole, 607, a second inserting column, 608, a second inserting hole, 609, a second left connecting seat, 610, a second right connecting seat, 7, a first bearing, 700, a second bearing, 8, a first stand pipe, 800, a second stand pipe, 801, a third stand pipe, 802, a fourth stand pipe, 9, a housing, 900, a driving motor, 901, and a driving rod.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 4;
the invention relates to a transmission assembly, also called a linear driving mechanism, which is arranged in a lifting upright post and is used for driving an inner pipe and an outer pipe of the lifting upright post to relatively stretch, and the transmission assembly structurally comprises a transmission pipe 1 in transmission connection with the driving mechanism; the driving mechanism comprises a shell 9 and a driving motor 900 arranged in the shell 9; one end of the transmission pipe 1 close to the driving mechanism is fixedly connected with a driving rod 901, the axis of which is coaxial with the transmission pipe 1, the driving rod 901 can be rotatably connected to the bottom of the shell 9, and the free end of the driving rod 901 is arranged in the shell 9 and is in transmission connection with a driving motor 900 in the shell; the inner circumferential wall of the transmission pipe 1 is provided with a plurality of sliding grooves 100 extending along the axial direction and distributed along the circumferential direction.
The outer side wall of the first wire tube 2 is provided with external threads and is positioned in the transmission tube 1, the first wire tube 2 can synchronously rotate with the transmission tube 1, the first wire tube 2 and the transmission tube 1 can relatively slide along the axial direction to generate displacement, and the first transmission nut 5 is connected to the first wire tube 2 in a threaded manner; the inner circumferential wall of the first wire tube 2 is provided with a plurality of sliding chutes 100 which extend along the axial direction and are distributed along the circumferential direction, the outer side wall of the first wire tube 2 is sleeved with a first sliding block 201, the outer circumferential wall of the first sliding block 201 is provided with a radial convex block which is correspondingly clamped with the sliding chutes 100 on the inner circumferential wall of the transmission tube 1, and the outer side wall of the radial convex block on the first sliding block 201 is in clearance fit with the inner wall of the sliding chute 100 on the transmission tube 1; first silk pipe 2 on the cover be equipped with first bearing 7, first bearing 7 fixed connection in first connecting seat 6 for make first silk pipe 2 pass through first bearing 7 and first connecting seat 6 rotatable coupling and make first silk pipe 2 and first connecting seat 6 can follow axial synchronous motion. The transmission tube 1 rotates to enable the first wire tube 2 to synchronously rotate along with the transmission tube 1, and when the rotation of the first transmission nut 5 is limited, the first wire tube 2 and the transmission tube 1 can relatively slide along the axial direction to generate displacement.
The outer side wall of the second wire tube 3 is provided with external threads and is positioned in the first wire tube 2, the second wire tube 3 can synchronously rotate with the first wire tube 2, the second wire tube 3 and the first wire tube 2 can relatively slide along the axial direction to generate displacement, the second wire tube 3 is in threaded connection with a second transmission nut 500, and the second transmission nut 500 is connected with a first connecting seat 6 capable of limiting the rotation of the second transmission nut 500; the outer side wall of the second wire tube 3 is sleeved with a second sliding block 301, the outer circumferential wall of the second sliding block 301 is provided with a radial convex block correspondingly clamped with the sliding groove 100 on the inner circumferential wall of the first wire tube 2, and the outer side wall of the radial convex block on the second sliding block 301 is in clearance fit with the inner wall of the sliding groove 100 on the first wire tube 2; the second wire tube 3 is sleeved with a second bearing 700, and the second bearing 700 is fixedly connected in the second connecting seat 600, so that the second wire tube 3 can be rotatably connected with the second connecting seat 600 through the second bearing 700, and the second wire tube 3 and the second connecting seat 600 can move synchronously along the axial direction. The first wire tube 2 rotates synchronously with the transmission tube 1, so that the second wire tube 3 rotates synchronously with the first wire tube 2, and when the rotation of the second transmission nut 500 is limited, the second wire tube 3 and the first wire tube 2 can slide relatively along the axial direction to generate displacement.
The lead screw 4 is located in the second wire tube 3, the lead screw 4 can rotate synchronously with the second wire tube 3, the lead screw 4 and the second wire tube 3 can relatively slide along the axial direction to generate displacement, the lead screw 4 is in threaded connection with a third transmission nut 501, and the third transmission nut 501 is connected with a second connecting seat 600 capable of limiting the rotation of the third transmission nut 501. The driving mechanism drives the transmission tube 1 to rotate, so that the first wire tube 2, the second wire tube 3 and the lead screw 4 synchronously rotate along with the transmission tube 1, under the condition that the first transmission nut 5, the second transmission nut 500 and the third transmission nut 501 are limited to rotate, the first wire tube 2 can slide relatively along the axial direction relative to the transmission tube 1 to generate displacement, the second wire tube 3 can slide relatively along the axial direction relative to the first wire tube 2 to generate displacement, and the lead screw 4 can slide relatively along the axial direction relative to the second wire tube 3 to generate displacement, so that the telescopic action of the transmission assembly is realized.
Referring to fig. 2, the inner circumferential walls of the transmission tube 1, the first wire tube 2 and the second wire tube 3 are provided with a plurality of sliding grooves 100 extending along the axial direction and distributed along the circumferential direction; the outer side wall of the first wire tube 2 is sleeved with a first sliding block 201, the outer circumferential wall of the first sliding block 201 is provided with a radial projection which is correspondingly clamped with the sliding groove 100 on the inner circumferential wall of the transmission tube 1, and the outer side wall of the radial projection on the first sliding block 201 is in clearance fit with the inner wall of the sliding groove 100 on the transmission tube 1; the outer side wall of the second wire tube 2 is sleeved with a second sliding block 201, the outer circumferential wall of the second sliding block 201 is provided with a radial convex block correspondingly clamped with the sliding groove 100 on the inner circumferential wall of the first wire tube 2, and the outer side wall of the radial convex block on the second sliding block 201 is in clearance fit with the inner wall of the sliding groove 100 on the first wire tube 2; the outer side wall of the screw rod 4 is sleeved with a third sliding block 400, the outer circumferential wall of the third sliding block 400 is provided with a radial convex block which is correspondingly clamped with the sliding groove on the inner circumferential wall of the second wire tube 3, and the outer side wall of the radial convex block on the screw rod 4 is in clearance fit with the inner wall of the sliding groove on the second wire tube 3.
Referring to fig. 3 and 4, the first connection seat 6 includes a first left connection seat 603 and a first right connection seat 604 that are butted with each other, a first insertion hole 606 and a first insertion column 605 are provided on a butting surface of the first left connection seat 603, a second insertion hole 608 and a second insertion column 607 are provided on a butting surface of the first right connection seat 604, after the first left connection seat 603 and the first right connection seat 604 are butted, the first insertion column 605 is inserted into the second insertion hole 608, and the second insertion column 607 is inserted into the first insertion hole 606. The second connecting seat 600 comprises a second left connecting seat 609 and a second right connecting seat 610 which are mutually butted, a first inserting hole 606 and a first inserting column 605 are arranged on the butting surface of the second left connecting seat 609, a second inserting hole 608 and a second inserting column 607 are arranged on the butting surface of the second right connecting seat 610, after the second left connecting seat 609 and the second right connecting seat 610 are butted, the first inserting column 605 is inserted into the second inserting hole 608, and the second inserting column 607 is inserted into the first inserting hole 606. The first connecting seat 6 is provided with a first containing groove 601 for containing the first bearing 7 inside one end close to the first wire tube 5, the first bearing 7 is connected in the first containing groove 601, and the inner ring of the first bearing 7 is fixedly sleeved on the step surface 200 at the end part of the first wire tube 2. A second receiving groove 602 for receiving the second bearing 700 is formed in one end of the second connecting seat 600 close to the second wire tube 3, the second bearing 700 is connected in the second receiving groove 602, and an inner ring of the second bearing 700 is fixedly sleeved on the step surface 200 at the end of the second wire tube 3. First connecting seat is through first left connecting seat and the butt joint of first right connecting seat to and the second connecting seat passes through the butt joint of second left connecting seat and second right connecting seat, thereby restriction second drive nut and third drive nut are rotatory, set up like this, make being connected between first connecting seat and the second drive nut, and be connected between second connecting seat and the third drive nut more convenient, need not to use hand tool can accomplish the installation, improved the installation effectiveness. And the installation between the first connecting seat and the first bearing and the installation between the second connecting seat and the second bearing are very convenient.
See fig. 5-6; the invention relates to a lifting upright post, which comprises a first vertical pipe 8, a second vertical pipe 800, a third vertical pipe 801 and a fourth vertical pipe 802 which are sequentially sleeved from inside to outside, a shell 9 fixedly connected with the upper end of the first vertical pipe 8, a driving mechanism arranged in the shell 9 and a transmission assembly in transmission connection with the driving mechanism, wherein the driving mechanism is a driving motor 900, and the transmission assembly adopts the transmission assembly of any technical scheme; the driving mechanism is in transmission connection with the transmission pipe 1, the first transmission nut 5 is connected with the first vertical pipe 8, the first connecting seat 6 is connected with the second vertical pipe 800, and the second connecting seat 600 is connected with the third vertical pipe 801; the lower end of the fourth vertical pipe 802 is fixedly connected to a fixing plate 502, the lower end of the lead screw 4 is rotatably connected to the fixing plate 502, and the lower end of the lead screw 4 is axially limited on the fixing plate 502. That is, the center of the fixing plate 502 is provided with a through hole, a hollow shaft sleeve 503 is connected in the through hole, and the lower end of the lead screw 4 is in clearance fit in the shaft sleeve 503. One end of the transmission pipe 1 close to the driving mechanism is fixedly connected with a driving rod 901, the axis of which is coaxial with the transmission pipe, the driving rod 901 is rotatably connected to the bottom of the shell 9, and the free end of the driving rod 901 is arranged in the shell 9 and is in transmission connection with the driving mechanism in the shell 9. The rotating shaft of the driving motor is generally in fit transmission with a worm gear and a worm so as to realize transmission connection between the driving motor and the driving rod.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A drive assembly, characterized by: it comprises
The transmission pipe is in transmission connection with the driving mechanism;
the outer side wall of the first wire tube is provided with external threads and is positioned in the transmission tube, the first wire tube can synchronously rotate with the transmission tube, the first wire tube and the transmission tube can relatively slide along the axial direction to generate displacement, and a first transmission nut is connected to the first wire tube in a threaded manner;
the outer side wall of the second wire tube is provided with external threads and is positioned in the first wire tube, the second wire tube can synchronously rotate with the first wire tube, the second wire tube and the first wire tube can relatively slide along the axial direction to generate displacement, a second transmission nut is connected to the second wire tube in a threaded manner, and a first connecting seat capable of limiting the second transmission nut to rotate is connected to the second transmission nut;
the lead screw is positioned in the second wire tube, the lead screw can synchronously rotate with the second wire tube, the lead screw and the second wire tube can relatively slide along the axial direction to generate displacement, the lead screw is in threaded connection with a third transmission nut, and the third transmission nut is connected with a second connecting seat capable of limiting the third transmission nut to rotate.
2. A drive assembly as set forth in claim 1, wherein: the first wire pipe is sleeved with a first bearing, and the first bearing is fixedly connected in the first connecting seat and used for enabling the first wire pipe to be rotatably connected with the first connecting seat through the first bearing and enabling the first wire pipe and the first connecting seat to move synchronously along the axial direction.
3. A drive assembly as set forth in claim 2, wherein: the second wire tube is sleeved with a second bearing, and the second bearing is fixedly connected in the second connecting seat and used for enabling the second wire tube to be rotatably connected with the second connecting seat through the second bearing and enabling the second wire tube and the second connecting seat to move synchronously along the axial direction.
4. A drive assembly as set forth in claim 1, wherein: the inner circular peripheral walls of the transmission pipe, the first wire pipe and the second wire pipe are respectively provided with a plurality of sliding grooves which extend along the axial direction of the transmission pipe and are distributed along the circumferential direction of the transmission pipe; the outer side wall of the first wire pipe is sleeved with a first sliding block, the outer circumferential wall of the first sliding block is provided with a radial convex block correspondingly clamped with the sliding groove on the inner circumferential wall of the transmission pipe, and the outer side wall of the radial convex block on the first sliding block is in clearance fit with the inner wall of the sliding groove on the transmission pipe; the outer side wall of the second wire pipe is sleeved with a second sliding block, the outer circumferential wall of the second sliding block is provided with a radial bump correspondingly clamped with the sliding groove on the inner circumferential wall of the first wire pipe, and the outer side wall of the radial bump on the second sliding block is in clearance fit with the inner wall of the sliding groove on the first wire pipe; the outer side wall of the screw rod is sleeved with a third sliding block, the outer circumferential wall of the third sliding block is provided with a radial convex block which is correspondingly clamped with the sliding groove on the inner circumferential wall of the second wire tube, and the outer side wall of the radial convex block on the screw rod is in clearance fit with the inner wall of the sliding groove on the second wire tube.
5. A drive assembly as set forth in claim 2, wherein: the first connecting seat comprises a first left connecting seat and a first right connecting seat which are mutually butted, a first jack and a first inserting column are arranged on a butt joint face of the first left connecting seat, a second jack and a second inserting column are arranged on a butt joint face of the first right connecting seat, the first left connecting seat and the first right connecting seat are butted, the first inserting column is spliced with the second jack, and the second inserting column is spliced with the first jack.
6. A drive assembly as set forth in claim 3, wherein: the second connecting seat include the left connecting seat of second and the right connecting seat of second that butt joint each other, be equipped with first jack and first post of inserting on the butt joint face of the left connecting seat of second, be equipped with second jack and second on the butt joint face of the right connecting seat of second and insert the post, the left connecting seat of second and the right connecting seat of second butt joint back, first post and the second jack of inserting are pegged graft, the second is inserted the post and is pegged graft with first jack.
7. A drive assembly as set forth in claim 2, wherein: the first connecting seat is provided with a first accommodating groove for accommodating a first bearing in the inner part of one end close to the first wire tube, the first bearing is connected in the first accommodating groove, and the inner ring of the first bearing is fixedly sleeved on the step surface of the end part of the first wire tube.
8. A drive assembly as set forth in claim 3, wherein: the second connecting seat is provided with a second accommodating groove for accommodating a second bearing in the inner part of one end, close to the second wire tube, of the second connecting seat, the second bearing is connected in the second accommodating groove, and the inner ring of the second bearing is fixedly sleeved on the step surface at the end part of the second wire tube.
9. The utility model provides a lifting column, it includes first riser, second riser, third riser and the fourth riser of suit in proper order from inside to outside, with first riser upper end fixed connection's shell, the actuating mechanism who sets up in the shell and the transmission assembly who is connected with the actuating mechanism transmission, its characterized in that: the transmission assembly adopts the transmission assembly as claimed in any one of the claims 1 to 8; the driving mechanism is in transmission connection with the transmission pipe, the first transmission nut is connected with the first vertical pipe, the first connecting seat is connected with the second vertical pipe, and the second connecting seat is connected with the third vertical pipe; the lower end of the fourth vertical pipe is fixedly connected with a fixing plate, the lower end of the lead screw is rotatably connected to the fixing plate, and the lower end of the lead screw is axially limited on the fixing plate.
10. A lifting column as claimed in claim 9, wherein: the drive pipe is close to the actuating mechanism's one end fixed connection axis and the actuating lever of drive pipe coaxial line, actuating lever rotatable coupling in the bottom of shell, and the free end setting of actuating lever in the shell and with the actuating mechanism transmission connection in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044775.8A CN110848529A (en) | 2019-10-30 | 2019-10-30 | Transmission assembly and lifting upright column applied by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044775.8A CN110848529A (en) | 2019-10-30 | 2019-10-30 | Transmission assembly and lifting upright column applied by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110848529A true CN110848529A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911044775.8A Pending CN110848529A (en) | 2019-10-30 | 2019-10-30 | Transmission assembly and lifting upright column applied by same |
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| Country | Link |
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| CN (1) | CN110848529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253710A (en) * | 2020-12-07 | 2021-01-22 | 烟台智汇港科技创新有限公司 | Synchronous speed control mechanical device based on coaxial and reverse rotation directions |
-
2019
- 2019-10-30 CN CN201911044775.8A patent/CN110848529A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253710A (en) * | 2020-12-07 | 2021-01-22 | 烟台智汇港科技创新有限公司 | Synchronous speed control mechanical device based on coaxial and reverse rotation directions |
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