CN117439330A - Hollow shaft motor lifting mechanism - Google Patents

Hollow shaft motor lifting mechanism Download PDF

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Publication number
CN117439330A
CN117439330A CN202311394348.9A CN202311394348A CN117439330A CN 117439330 A CN117439330 A CN 117439330A CN 202311394348 A CN202311394348 A CN 202311394348A CN 117439330 A CN117439330 A CN 117439330A
Authority
CN
China
Prior art keywords
hollow shaft
gear
shaft motor
fixed
planetary gear
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.)
Pending
Application number
CN202311394348.9A
Other languages
Chinese (zh)
Inventor
项乐宏
李方圆
陈鹏
刘海坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Loctek Ergonomic Technology Co Ltd
Original Assignee
Loctek Ergonomic Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Loctek Ergonomic Technology Co Ltd filed Critical Loctek Ergonomic Technology Co Ltd
Priority to CN202311394348.9A priority Critical patent/CN117439330A/en
Publication of CN117439330A publication Critical patent/CN117439330A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a hollow shaft motor lifting mechanism, a driving gear on a hollow shaft of a hollow shaft motor is meshed with a plurality of planetary gears which are in rotary fit with respective planetary gear shafts, one end of a gear housing provided with a second central hole for a screw rod to pass through is fixed with one end of the hollow shaft motor, a guide inner gear ring for meshing the plurality of planetary gears and enabling the plurality of planetary gears to rotate around the axis of the driving gear is arranged on the inner circular wall of the gear housing, one end of the plurality of planetary gear shafts far away from the hollow shaft motor is fixed on a planetary gear carrier, the planetary gear carrier is coaxial with the driving gear, a gap for the planetary gear carrier to rotate around the axis of the planetary gear carrier is reserved between the planetary gear carrier and the smooth circular inner wall of the gear housing above the guide inner gear carrier, and an inner screw thread which is screwed with the screw rod to drive the screw rod to ascend or descend is arranged on the inner circular wall of a third central hole of the planetary gear carrier. The lifting mechanism has small volume, compact structure and small occupied space, and can be suitable for lifting upright posts.

Description

Hollow shaft motor lifting mechanism
Technical Field
The invention relates to the technical field of lifting columns, in particular to a hollow shaft motor lifting mechanism.
Background
In the prior art, on the one hand, the driving motor and the reduction gear mechanism of the screw nut pair of the lifting upright post are arranged outside the lifting upright post, and the driving motor and the reduction gear mechanism are arranged at the top end of the lifting upright post, such as on a supporting frame fixed by a lifting table and a table board, and the driving motor and the reduction gear mechanism are arranged at the bottom end of the lifting upright post, such as on a baseboard of the lifting table. The disadvantage is that it occupies a large space outside to increase the volume of the apparatus and affect the appearance; the large space of the end part height of the upright post is occupied, the transmission stroke is reduced, the transmission stroke loss of the screw-nut pair is increased, and the running cost of equipment is also increased.
On the other hand, the screw rod passes through the central hole of the hollow shaft motor, the hollow shaft motor drives the nut in the screw rod nut pair to rotate and drives the screw rod to linearly lift, and the screw rod has early application at home and abroad. However, in the prior art, there is no reduction gear mechanism, the moment is small, the bearing capacity is poor, and no self-locking mechanism is not suitable for lifting columns such as lifting columns which are not suitable for lifting tables. The reduction gear mechanism is axially far away from the hollow shaft motor, or the reduction gear mechanism is arranged in parallel with the screw rod, and the reduction gear mechanism and the screw rod are large in size, loose in structure and large in occupied space, and are not suitable for lifting columns such as lifting columns of electric lifting tables.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hollow shaft motor lifting mechanism which is small in size, compact in structure and small in occupied space and can be suitable for lifting an upright post.
The technical scheme is that the lifting mechanism of the hollow shaft motor comprises a screw rod axially penetrating through a first central hole of the hollow shaft motor, a driving gear on a hollow shaft of the hollow shaft motor is meshed with a plurality of planetary gears which are in rotary fit with respective planetary gear shafts, the driving gear is coaxial with the hollow shaft, one end of a gear housing provided with a second central hole for the screw rod to penetrate through is fixed with one end of the hollow shaft motor, a guide inner gear ring for the plurality of planetary gears to mesh and for the plurality of planetary gears to rotate around the axis of the driving gear is arranged on the inner circular wall of the gear housing, one end of the plurality of planetary gear shafts, far away from the hollow shaft motor, is fixed on a planetary gear carrier, the planetary gear carrier is coaxial with the driving gear, a gap for the planetary gear carrier to rotate around the axis of the screw rod is reserved between the planetary gear carrier and the smooth circular inner wall of the gear housing above the guide inner gear ring, and an inner screw thread which is screwed with the screw rod to drive the screw rod to ascend or descend is arranged on the inner circular wall of a third central hole of the planetary gear carrier.
After adopting the structure, the hollow shaft motor lifting mechanism has the following advantages:
after the hollow shaft motor is electrified, the hollow shaft rotates, a driving gear or a sun gear on the outer wall of the hollow shaft rotates, the driving gear is meshed with a plurality of planetary gears or planetary gears to drive the planetary gears to revolve around the axis of the driving gear while rotating around the planetary gear shafts of the planetary gears, the planetary gears are meshed with a guide annular gear on the inner circular wall of the circular gear cover at the same time and are guided to rotate, and as the planetary gear shafts are fixed on a planetary gear carrier or a planetary carrier, the planetary gear carrier can rotate in the guide annular gear and is coaxial with the driving gear, the planetary gear revolves around the driving gear to drive the planetary gear carrier to rotate around the axis of the driving gear, and as the planetary gear carrier and a nut in a screw-nut pair are integrated or combined into a whole, the planetary gear carrier and the nut rotate around the axis of the driving gear to drive a screw rod screwed on the inner thread of the nut to ascend or descend.
The hollow shaft motor lifting mechanism has small volume, very compact structure and small occupied space, and is completely suitable for lifting upright posts such as lifting upright posts of electric lifting tables because the hollow shaft of the motor is coaxial with the driving gear, the planetary gear carrier, namely the nut and the screw rod. The hollow shaft motor lifting mechanism has large moment and strong bearing capacity, and is stable and reliable in self-locking under the state of motor stalling.
Further, the first central hole is a central hole of the hollow shaft and a central hole of a lower end cover of the hollow shaft motor, the hollow shaft rotating relative to the hollow shaft motor upwards penetrates through the central hole of an upper end cover of the hollow shaft motor, and the driving gear is fixed on the outer circumferential surface of the hollow shaft extending out of the upper end cover of the hollow shaft motor. After the structure is adopted, the technical effects of small volume, compact structure, small occupied space, large moment, strong bearing capacity and stable and reliable self-locking when the motor is in a stalling state are further ensured.
Further, the gear housing comprises a housing end cover provided with a second center hole, a plurality of screw through holes are formed in the housing end cover, a plurality of set screws penetrate through the respective screw through holes and are screwed in the respective threaded holes of the upper end cover of the hollow shaft motor in a one-to-one correspondence manner; the gear housing also comprises a circular housing body with a second center hole on the end plate, wherein the outer lower end of the circular housing body is inserted into a baffle ring formed by the plurality of upward arc-shaped connecting blocks and is detachably fixed with the plurality of upward arc-shaped connecting blocks; the guide annular gear is arranged at the inner lower end of the circular cover shell, and the smooth circular inner wall is arranged at the inner upper end of the circular cover shell. After the structure is adopted, the technical effects of small volume, compact structure, small occupied space, large moment, strong bearing capacity and stable and reliable self-locking when the motor is in a stalling state are further ensured. And the installation and the disassembly are convenient.
Further, the planet gear carrier is a regular quadrangle with four concave edges, the outer sides of the four opposite angles are all arc edges, the number of the planet gears is four, four planet gear shafts are fixed on the four opposite angles which are uniformly distributed along the circumferential direction, and gaps are reserved between the arc edges of the four opposite angles and the smooth circular inner wall of the gear housing. After the structure is adopted, the four planetary gears revolve around the axis of the driving gear through the meshing guide of the guide annular gear while rotating around the planetary gear shafts arranged on the four opposite angles, and the planetary gear carrier is concave on four sides, so that the four planetary gears are closer to the position of the guide annular gear, the meshing of the teeth of the planetary gears and the teeth of the guide annular gear is more flexible, stable and reliable, the small size, compact structure, small occupied space, large moment and stable and reliable self-locking during the motor stalling state are further ensured.
Further, an axially upward convex ring is arranged on the end face of the planet gear carrier, which is far away from the planet gear, the axially upward convex ring is fixed with an inner ring of a rolling bearing, and an outer ring of the rolling bearing is fixed with the inner circumferential wall of an annular groove which is convex upward from an end plate at the top of the circular housing body. After the structure is adopted, the operation is more flexible, more stable and more reliable.
Further, the central hole of the inner end part of the planet gear carrier, which is close to the planet gear, is a regular polygon hole, a regular polygon nut is fixed in the regular polygon hole, the internal thread is the internal thread of the central hole of the regular polygon nut, and the diameter of the internal thread hole is smaller than the diameter of the third central hole of the planet gear carrier, which is far away from the planet gear end. After the structure is adopted, the nut and the planetary gear carrier are still integrated or combined, but can be separately processed during manufacturing, the nut is embedded into the polygonal hole of the planetary gear carrier and then fixed, such as interference fit or transverse pin fixation, and the screw rod can smoothly and flexibly ascend or descend under the screwing drive of the nut because the diameter of the internal threaded hole is smaller than the diameter of the third central hole at the top of the planetary gear carrier.
Further, the hollow shaft motor and the gear housing which are mutually fixed are fixed with the fixed inner tube of the lifting upright post, and one end of the screw rod is fixed with the lifting outer tube of the lifting upright post. After the structure is adopted, the planetary gear carrier, namely the nut, rotates to drive the screw rod to move up and down and drive the lifting outer tube of the lifting upright post to ascend or descend. The whole height of the screw rod can be applied to the device, the occupation of the height space of the shaft end of the lifting upright post is reduced, the travel of the inner pipe and the outer pipe which are matched with each other in a sliding way of the lifting upright post is utilized to the maximum extent, the transmission travel is greatly increased, the transmission travel loss of a screw rod nut pair is greatly reduced, and the running cost of equipment is saved. And because the motor, the reduction gear and the nut screw rod pair are all concentrated in the lifting upright post or the table leg, the external occupied space is greatly reduced, the equipment volume is also reduced, the equipment cost is relatively saved, and the appearance of the lifting upright post or the table leg is neat.
Drawings
Fig. 1 is a schematic diagram of an explosion structure when the hollow shaft motor lifting mechanism is connected with an inner pipe and an outer pipe of a lifting upright post.
Fig. 2 is a schematic diagram of an explosion structure when the hollow shaft motor lifting mechanism is connected with the inner pipe and the outer pipe of the lifting upright post.
Fig. 3 is a schematic diagram of an explosion structure when the hollow shaft motor lifting mechanism is connected with the inner pipe and the outer pipe of the lifting upright post.
Fig. 4 is a schematic diagram of an exploded view of the hollow axle motor lift mechanism of the present invention (wherein the screw is shown schematically only for a small section of its entire length; a plurality of set screws are not shown, as is also shown in fig. 5 and 6 below).
Fig. 5 is a schematic diagram of an exploded view of a hollow axle motor lift mechanism of the present invention (with the lead screw not shown).
Fig. 6 is a schematic diagram of an exploded view of a hollow axle motor lift mechanism of the present invention (with the lead screw not shown).
Fig. 7 is an enlarged schematic view of the circular gear cover of fig. 6 after being replaced by another angle.
The figure shows: 1. lifting outer tube, 2, gear housing, 3, hollow shaft motor, 4, outer tube connecting plate, 5, screw rod, 6, fixed inner tube, 7, circular housing, 8, antifriction bearing, 9, axially upward bulge loop, 10, planetary gear carrier, 11, planetary gear shaft, 12, planetary gear, 13, housing end cover, 14, driving gear, 15, guiding annular gear, 16, internal thread, 17, central hole of planetary gear, 18, arc connecting block, 19, baffle ring, 20, screw through hole, 21, first central hole, 22, hollow shaft, 23, upper end cover of hollow shaft motor, 24, threaded hole, 25, second central hole, 26, circular arc edge, 27, end plate, 28, lower end cover of hollow shaft motor, 29, smooth circular inner wall, 30, annular groove, 31, third central hole, 32, regular polygon nut, 33, diagonal angle.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. It should be noted that the description of these embodiments is for aiding in understanding the present invention, but is not to be construed as limiting the invention. In addition, the technical features described in the following embodiments of the present invention may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, 2, 3, 4, 5, 6 and 7.
The hollow shaft motor lifting mechanism comprises a screw rod 5 which axially penetrates through a first central hole 21 of a hollow shaft motor 3. The driving gear 14 on the hollow shaft 22 of the hollow shaft motor 3 is meshed with a plurality of planetary gears 12 rotatably fitted on the respective planetary gear shafts 11, and the driving gear 14 is coaxial with the hollow shaft 22. It will be appreciated that the central bore 17 of the planet gear is in rotational engagement with the planet pin 11. One end of a gear housing 2 provided with a second center hole 25 through which the screw 5 passes is fixed to one end of the hollow shaft motor 3. The inner circular wall of the gear housing 2 is provided with a guiding ring gear 15 for the plurality of planet gears 12 to mesh and for the plurality of planet gears 12 to rotate about the axis of the driving gear 14. One end of a plurality of or a plurality of planetary gear shafts 11 far away from the hollow shaft motor 3 is fixed on a planetary gear carrier 10, the planetary gear carrier 10 is coaxial with a driving gear 14, a gap for the planetary gear carrier 10 to rotate around the axis of the planetary gear carrier 10 is reserved between the planetary gear carrier 10 and a smooth circular inner wall 29 of a gear housing 2 above a guiding annular gear 15, and an inner circular wall of a third central hole 31 of the planetary gear carrier 10 is provided with an inner thread 16 which is screwed with a screw rod 5 to drive the screw rod 5 to ascend or descend.
The first central hole 21 is a central hole of the hollow shaft 22 and a central hole of the hollow shaft motor lower end cover 28, the hollow shaft 22 rotating relative to the hollow shaft motor 3 passes through the central hole of the hollow shaft motor upper end cover 23 upwards, and the driving gear 14 is fixed on the outer circumferential surface of the hollow shaft 22 extending out of the hollow shaft motor upper end cover 23. The fixing may be an interference fit fixing or a cross pin fixing or an integral molding.
The gear housing 2 comprises a housing end cover 13 provided with a second central hole 25, a plurality of screw through holes 20 are formed in the housing end cover 13, and a plurality of set screws penetrate through the respective screw through holes 20 and are screwed in respective threaded holes 24 of an upper end cover 23 of the hollow shaft motor in a one-to-one correspondence manner. The cover end cover 13 is provided with a plurality of upward arc-shaped connecting blocks 18, the gear cover 2 also comprises a circular cover shell 7 provided with a second center hole 25 on an end plate 27, the outer lower end of the circular cover shell 7 is inserted into a baffle ring 19 formed by a plurality of upward arc-shaped connecting blocks 18 and is detachably fixed with the plurality of upward arc-shaped connecting blocks 18, for example, a convex ring at the outer lower end of the circular cover shell 7 is mutually embedded with a concave ring in the baffle ring 19 to be axially limited and fixed, or is fixed by a transverse pin. The guiding annular gear 15 is arranged at the inner lower end of the circular cover shell 7, and the smooth circular inner wall 29 is arranged at the inner upper end of the circular cover shell 7.
The planetary gear carrier 10 is preferably a regular quadrangle with four concave edges, the outer sides of the four opposite corners 33 are all arc edges 26, the number of the planetary gears 12 is four, the four planetary gear shafts 11 are fixed on the four opposite corners 33 which are uniformly distributed along the circumferential direction, and a gap for rotation is reserved between the arc edges 26 of the four opposite corners 33 and the smooth circular inner wall 29 of the circular cover shell 7 of the gear cover shell 2.
The planet gear carrier 10 has an axially projecting ring 9 on its end face remote from the planet gear 12, the axially projecting ring 9 being fixed to an inner ring of a rolling bearing 8, the outer ring of the rolling bearing 8 being fixed to an inner circumferential wall of an annular recess 30 projecting upwardly from an end plate 27 at the top of the circular housing 7, as by interference fit.
The central hole of the inner end part of the planet gear carrier 10, which is close to the planet gear 12, is a regular polygon Kong Ruzheng hexagon hole, a regular polygon nut 32 is fixed in the regular polygon hole, the internal thread 16 is the internal thread 16 of the regular polygon nut 32 such as the regular hexagon nut central hole, and the diameter of the internal thread hole is smaller than the diameter of the third central hole 31 of the planet gear carrier 10, which is far away from the planet gear 12.
The hollow shaft motor 3 and the gear housing 2 which are mutually fixed are fixed with the fixed inner tube 6 of the lifting upright post, such as by a transverse pin. One end of the screw rod 5 is fixed with the lifting outer tube 1 of the lifting upright post, such as by an outer tube connecting plate 4 and a screw.
The drive gear 14 is also known as a sun gear. The planetary gears 12 are also called planets. The planet carrier 10 is also called a planet carrier.
The above-noted components or structures or numbers are not shown in the figures. The drawings are schematic only, and the text descriptions will be followed if the drawings do not coincide with the text descriptions or if the drawings do not coincide with each other.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a hollow shaft motor elevating system, includes the lead screw of axial through hollow shaft motor first centre bore, its characterized in that: the driving gear on the hollow shaft of the hollow shaft motor is meshed with a plurality of planetary gears which are in rotary fit with the respective planetary gear shafts, the driving gear is coaxial with the hollow shaft, one end of a gear housing provided with a second center hole for a screw rod to pass through is fixed with one end of the hollow shaft motor, a guide annular gear which is used for meshing the plurality of planetary gears and enabling the plurality of planetary gears to rotate around the axis of the driving gear is arranged on the inner circular wall of the gear housing, one end of the plurality of planetary gear shafts, which is far away from the hollow shaft motor, is fixed on a planetary gear carrier, the planetary gear carrier is coaxial with the driving gear, a gap for the planetary gear carrier to rotate around the axis of the planetary gear carrier is reserved between the planetary gear carrier and the smooth circular inner wall of the gear housing above the guide annular gear carrier, and an inner screw thread which is screwed with the screw rod to drive the screw rod to ascend or descend is arranged on the inner circular wall of a third center hole of the planetary gear carrier.
2. The hollow axle motor lift mechanism of claim 1 wherein: the first central hole is a central hole of a hollow shaft and a central hole of a lower end cover of the hollow shaft motor, the hollow shaft rotating relative to the hollow shaft motor upwards penetrates through the central hole of an upper end cover of the hollow shaft motor, and the driving gear is fixed on the outer circumferential surface of the hollow shaft extending out of the upper end cover of the hollow shaft motor.
3. The hollow axle motor lift mechanism of claim 1 wherein: the gear housing comprises a housing end cover provided with a second center hole, a plurality of screw through holes are formed in the housing end cover, a plurality of set screws penetrate through the respective screw through holes and are screwed in the respective threaded holes of the upper end cover of the hollow shaft motor in a one-to-one correspondence manner; the gear housing also comprises a circular housing body with a second center hole on the end plate, wherein the outer lower end of the circular housing body is inserted into a baffle ring formed by a plurality of upward arc-shaped connecting blocks and is detachably fixed with the plurality of upward arc-shaped connecting blocks; the guide annular gear is arranged at the inner lower end of the circular cover shell, and the smooth circular inner wall is arranged at the inner upper end of the circular cover shell.
4. The hollow axle motor lift mechanism of claim 1 wherein: the planetary gear carrier is a regular quadrangle with four concave edges, the outer sides of the four opposite angles are all arc edges, the number of the planetary gears is four, four planetary gear shafts are fixed on the four opposite angles which are uniformly distributed along the circumferential direction, and gaps are reserved between the arc edges of the four opposite angles and the smooth circular inner wall of the gear housing.
5. The hollow axle motor lift mechanism of claim 1 or 4 wherein: the end face of the planet gear carrier, which is far away from the planet gear, is provided with an axial upward convex ring, the axial upward convex ring is fixed with an inner ring of a rolling bearing, and an outer ring of the rolling bearing is fixed with the inner circumferential wall of an annular groove protruding upwards from an end plate at the top of the circular housing body.
6. The hollow axle motor lift mechanism of claim 1 or 4 wherein: the inner end part central hole of the planet gear frame, which is close to the planet gear, is a regular polygon hole, a regular polygon nut is fixed in the regular polygon hole, the internal thread is the internal thread of the regular polygon nut central hole, and the diameter of the internal thread hole is smaller than the diameter of the third central hole of the planet gear frame, which is far away from the planet gear end.
7. The hollow axle motor lift mechanism of claim 1 wherein: the hollow shaft motor and the gear housing which are mutually fixed are fixed with the fixed inner tube of the lifting upright post, and one end of the screw rod is fixed with the lifting outer tube of the lifting upright post.
CN202311394348.9A 2023-10-25 2023-10-25 Hollow shaft motor lifting mechanism Pending CN117439330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311394348.9A CN117439330A (en) 2023-10-25 2023-10-25 Hollow shaft motor lifting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311394348.9A CN117439330A (en) 2023-10-25 2023-10-25 Hollow shaft motor lifting mechanism

Publications (1)

Publication Number Publication Date
CN117439330A true CN117439330A (en) 2024-01-23

Family

ID=89547450

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311394348.9A Pending CN117439330A (en) 2023-10-25 2023-10-25 Hollow shaft motor lifting mechanism

Country Status (1)

Country Link
CN (1) CN117439330A (en)

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