CN115367661A

CN115367661A - Lifting mechanism

Info

Publication number: CN115367661A
Application number: CN202210942549.7A
Authority: CN
Inventors: 赵连军; 徐波
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-22

Abstract

The invention discloses a lifting mechanism which comprises a machine base, a driving mechanism and a lifting assembly, wherein the driving mechanism comprises a driving device and a driving part, the driving device is provided with an output shaft extending along the transverse direction, the driving part is arranged on the output shaft to drive the driving part to rotate, the lifting assembly comprises an installation part, the installation part is movably arranged on the machine base along the up-down direction, a transmission mechanism is arranged between the driving part and the installation part, and the transmission mechanism is used for converting the rotating stroke of the driving part into the up-down moving stroke of the installation part. Through arranging drive arrangement along horizontal to turn into the rotation of output shaft the motion of installation department in upper and lower direction, the installation department realizes bearing the weight of the article up-and-down activity of treating going up and down, and the space accounts for less on upper and lower direction because of drive arrangement to solve the too big technical problem of elevating system size under the small space little stroke environment.

Description

Lifting mechanism

Technical Field

The invention relates to the field of transportation equipment, in particular to a lifting mechanism.

Background

At present, a motor and a lead screw or a synchronous belt are combined in a conventional lifting mechanism, and when the motor and the lead screw are combined, because the lead screw body structure, the shaft support structures at two sides, the coupling structure and other devices cannot be simplified, the lifting device has larger size in the axial direction (lifting direction); when the motor is used and the synchronous speed is combined, the synchronous belt wheel, the synchronous belt and the tensioning structure cannot be simplified due to the size of the synchronous belt wheel, the synchronous belt and the tensioning structure, the arrangement position of the motor and other factors, and the axial size of the lifting device is larger. Under the use scene of small space and small stroke, the conventional lifting mechanism can not meet the requirements.

Disclosure of Invention

The invention mainly aims to provide a lifting mechanism, and aims to solve the technical problem that the size of the lifting mechanism is overlarge in a small space and a small stroke environment.

In order to achieve the above object, the present invention provides a lifting mechanism, wherein the lifting mechanism comprises:

a machine base;

the driving mechanism comprises a driving device and a driving part, the driving device is provided with an output shaft extending along the transverse direction, and the driving part is arranged on the output shaft so as to drive the driving part to rotate; and the number of the first and second groups,

lifting unit, including the installation department, the installation department is located movably from top to bottom along the frame, the drive division with be equipped with drive mechanism between the installation department, drive mechanism be used for with the rotation stroke of drive division turns into the upper and lower activity stroke of installation department.

Optionally, the transmission mechanism includes a driving groove and a positioning protrusion, one of the driving portion and the mounting portion is provided with the driving groove, the other is provided with the positioning protrusion, the driving groove extends along the radial direction of the output shaft, and the positioning protrusion is slidably disposed along the driving groove.

Optionally, be equipped with on the installation department the location arch, the location arch is in the radial direction of output shaft is adjustable to be set up.

Optionally, the positioning protrusion comprises a bearing and a gasket, the bearing is arranged on the mounting portion, the axis of the bearing is transversely arranged, and the gasket is sleeved on the periphery of the bearing.

Optionally, the lifting assembly further includes a guide portion disposed on the base, the guide portion extends in an up-down direction, and the mounting portion is slidably mounted on the guide portion in the up-down direction.

Optionally, the guide portion includes a linear guide rail extending up and down, and a slider of the linear guide rail is connected to the mounting portion.

Optionally, the mounting portion extends in a transverse direction;

the linear guide is provided with two, two linear guide sets up at the horizontal direction interval.

Optionally, the lifting assembly further includes a mounting seat slidably disposed along a longitudinal direction, and the guide portion is disposed on the mounting seat.

Optionally, the driving device includes a driving motor and a speed reducer, the driving motor is coaxially connected with the speed reducer, and the speed reducer includes the output shaft.

Optionally, the drive motor comprises a brake servo motor.

According to the technical scheme provided by the invention, the driving device is arranged along the transverse direction and is provided with the output shaft extending along the transverse direction, and the transmission mechanism is arranged between the driving part and the mounting part, so that the driving part can drive the mounting part to move up and down when the driving part is driven by the output shaft to rotate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of a lifting mechanism provided in the present invention;

FIG. 2 is a schematic cross-sectional view of the lift mechanism of FIG. 1;

FIG. 3 is a schematic structural view of the transmission mechanism of FIG. 1;

fig. 4 is a perspective view of the lifting mechanism of fig. 1 from another perspective.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Lifting mechanism	3	Lifting assembly
1	Engine base	31	Mounting part
				2	Driving mechanism	32	Positioning projection
21	Drive device	321	Bearing assembly
				211	Driving motor	322	Gasket ring
212	Speed reducer	33	Guide part
				22	Driving part	331	Linear guide rail
a	Driving groove	34	Mounting seat

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

At present, a motor and a lead screw or a synchronous belt are combined in a conventional lifting mechanism, and when the motor and the lead screw are combined, the size of a lifting device in the axial direction (lifting direction) is larger because devices such as a lead screw body structure, shaft support structures at two sides, a coupling structure and the like cannot be simplified; when the motor is used and the synchronous speed is combined, the synchronous belt wheel, the synchronous belt and the tensioning structure cannot be simplified due to the size of the synchronous belt wheel, the synchronous belt and the tensioning structure, the arrangement position of the motor and other factors, and the axial size of the lifting device is larger. Under the use scene of small space and small stroke, the conventional lifting mechanism can not meet the requirements.

In order to solve the above problems, the present invention provides a lifting mechanism 100, and fig. 1 to 4 show an embodiment of the lifting mechanism 100 provided in the present invention.

Referring to fig. 1, the lifting mechanism 100 includes a base 1, a driving mechanism 2 and a lifting assembly 3, the driving mechanism 2 includes a driving device 21 and a driving portion 22, the driving device 21 has an output shaft extending along a transverse direction, the driving portion 22 is disposed on the output shaft to drive the driving portion 22 to rotate, the lifting assembly 3 includes an installation portion 31, the installation portion 31 is movably disposed on the base 1 along an up-down direction, a transmission mechanism is disposed between the driving portion 22 and the installation portion 31, and the transmission mechanism is configured to convert a rotation stroke of the driving portion 22 into an up-down movement stroke of the installation portion 31.

In the technical scheme provided by the invention, the driving device 21 is arranged along the transverse direction and is provided with an output shaft extending along the transverse direction, and the transmission mechanism is arranged between the driving part 22 and the mounting part 31, so that when the driving part 22 is driven by the output shaft to rotate, the driving part 22 can drive the mounting part 31 to move up and down, and the mounting part 31 can carry an article to be lifted to move up and down by arranging the driving device 21 along the transverse direction and converting the rotation of the output shaft into the movement of the mounting part 31 in the up and down direction, so that the driving device 21 occupies a small space in the up and down direction, and the technical problem that the size of the lifting mechanism 100 is overlarge in a small-space and small-stroke environment is solved.

Specifically, the transmission mechanism may be formed by connecting a driving rod to the driving portion 22, an end portion of the driving rod being hinged to the mounting portion 31, and when the driving rod rotates around the output shaft, a free end of the driving rod has a vertical moving stroke to drive the mounting portion 31 to move vertically, but with this arrangement, the mounting portion 31 also has a moving stroke in a horizontal direction, so that the lifting stroke of the mounting portion 31 is unstable, and therefore, referring to fig. 2 and 3, in this embodiment, the transmission mechanism includes a driving groove a and a positioning protrusion 32, one of the driving portion 22 and the mounting portion 31 is provided with the driving groove a, and the other is provided with the positioning protrusion 32, the driving groove a extends in a radial direction of the output shaft, and the positioning protrusion 32 is slidably disposed along the driving groove a. When the driving shaft rotates, the inner side wall of the driving groove a drives the positioning protrusion 32 to move in the vertical direction, and because the driving groove a extends in the radial direction of the output shaft, the positioning protrusion 32 can slide in the extending direction of the driving groove a while the positioning protrusion 32 is driven to move in the vertical direction, and cannot be driven by the driving groove a to move in the horizontal direction.

Because the movable stroke of the mounting part 31 along the up-down direction is related to the torque output by the transmission mechanism, namely when the positioning bulge 32 is closer to the output shaft, the lifting stroke of the mounting part 31 is smaller; when the positioning protrusion 32 is far from the output shaft, the lifting stroke of the mounting portion 31 is large.

Therefore, in order to enable the lifting stroke of the lifting mechanism 100 to be adjusted appropriately to meet different stroke requirements, in this embodiment, the mounting portion 31 is provided with the positioning protrusion 32, and the positioning protrusion 32 is adjustably arranged in the radial direction of the output shaft. The specific adjustment manner may be that a plurality of threaded holes are formed in the mounting portion 31 along the radial direction of the output shaft, the positioning protrusion 32 is provided with an external thread screwed with the threaded hole, and the positioning protrusion 32 is matched with one of the plurality of threaded holes as required. Alternatively, the positioning protrusion 32 is mounted on the mounting portion 31 by means of a device that can be extended and retracted in the radial direction of the output shaft, and the specific adjustment structure is not limited in the present invention.

Of course, when the positioning protrusion 32 is provided on the driving portion 22 and the driving groove a is provided on the mounting portion 31, the positioning protrusion 32 may be provided on the driving portion 22 to be adjustable in the radial direction of the output shaft.

Or, in order to enable the lifting stroke of the lifting mechanism 100 to be appropriately adjusted to meet different stroke requirements, in another embodiment, the driving portion 22 is provided with the driving groove a, and the driving portion 22 is detachably connected to the output shaft. The driving part 22 may set an extended length of the driving groove a of the driving part 22 according to a limit of a lifting stroke of the lifter.

Specifically, referring to fig. 3, in the present embodiment, the positioning protrusion 32 includes a bearing 321 and a washer 322, the bearing 321 is disposed on the mounting portion 31, an axis of the bearing 321 is disposed along a transverse direction, the washer 322 is sleeved on a peripheral side of the bearing 321, and the washer 322 has a certain elasticity, so that the bearing 321 can be positioned in the driving groove a. When the driving portion 22 rotates, the bearing 321 and the washer 322 can be roll-driven in the driving groove a.

Further, in order to enable the mounting portion 31 to lift up and down more stably, in this embodiment, the lifting assembly 3 further includes a guiding portion 33 disposed on the base 1, the guiding portion 33 extends in an up-down direction, and the mounting portion 31 is slidably mounted on the guiding portion 33 in the up-down direction. So, installation department 31 by the drive can be followed when moving from top to bottom, installation department 31 with guide part 33 sliding connection, in order to avoid installation department 31 is unstable at the ascending both ends of horizontal direction, especially when the article that bears on the installation department 31 is heavier, has avoided installation department 31's risk of turning on one's side.

Specifically, in this embodiment, the guide portion 33 includes a linear guide 331 extending vertically, a slider of the linear guide 331 is connected to the mounting portion 31, a sliding groove of the slider is in sliding fit with the linear guide 331, and when the mounting portion 31 moves vertically, the mounting portion 31 can move vertically stably due to the abutting force between the slider and the guide.

Further, when the span of the installation portion 31 in the transverse direction is large, the effect of guiding by the linear guide 331 is limited, in this embodiment, the installation portion 31 extends in the transverse direction, and the linear guide 331 is provided with two linear guides 331, two linear guides 331 are arranged at intervals in the transverse direction. In this way, the mounting portion 31 slides up and down along the two linear rails 331, and the two points define a straight line, so that the mounting portion 31 is more stable.

Further, in order to facilitate installation of the guide portion 33, in this embodiment, the lifting assembly 3 further includes an installation seat 34 slidably disposed along the longitudinal direction, and the guide portion 33 is disposed on the installation seat 34. In this way, the mounting seat 34 is adjustable along the longitudinal direction, the driving groove a is formed on the driving portion 22, and the driving portion 22 and the output shaft are detachably connected. The distance between the mounting part 31 and the output shaft can be adjusted by matching with the mounting seat 34, so that the effect of adjusting the torque is achieved.

Specifically, in the present embodiment, the driving device 21 includes a driving motor 211 and a speed reducer 212, the driving motor 211 is coaxially connected to the speed reducer 212, and the speed reducer 212 includes the output shaft. When the rotation speed of the output rotation shaft of the driving device 21 is too high, the output rotation speed can be adjusted by the speed reducer 212, and the lifting rate of the lifting mechanism 100 can be adjusted. The reducer 212 amplifies the output torque of the driving device 21, and the load carrying capacity of the lifting mechanism 100 is improved.

Specifically, in another embodiment, the driving motor 211 includes a brake servo motor. When the servo motor with the brake is in a power-off state, the shaft can be locked by utilizing the electromagnetic lock, so that the load can be prevented from falling off, and the electromagnetic lock increases the length of the driving motor 211, so that the length of the driving motor 211 in the axial direction is longer, but the space of the lifting mechanism 100 in the vertical direction is not influenced by the addition of the function.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A lift mechanism, comprising:

a machine base;

the driving mechanism comprises a driving device and a driving part, the driving device is provided with an output shaft extending along the transverse direction, and the driving part is arranged on the output shaft so as to drive the driving part to rotate; and (c) a second step of,

lifting unit, including the installation department, the installation department is located movably from top to bottom along the frame, the drive division with be equipped with drive mechanism between the installation department, drive mechanism is used for with the rotation stroke of drive division turns into the upper and lower activity stroke of installation department.

2. The lift mechanism of claim 1, wherein the transmission mechanism includes a drive groove and a positioning projection, one of the drive portion and the mounting portion being provided with the drive groove, the other being provided with the positioning projection, the drive groove extending in a radial direction of the output shaft, the positioning projection being slidably provided along the drive groove.

3. The lift mechanism of claim 2, wherein the mounting portion is provided with the positioning projection, the positioning projection being adjustably disposed in a radial direction of the output shaft.

4. The lift mechanism of claim 2, wherein the positioning protrusion includes a bearing and a washer, the bearing is disposed on the mounting portion, an axis of the bearing is disposed in a lateral direction, and the washer is sleeved on a peripheral side of the bearing.

5. The lift mechanism of claim 2, wherein the lift assembly further includes a guide portion disposed on the base, the guide portion extending in an up-down direction, the mounting portion being slidably mounted to the guide portion in the up-down direction.

6. The lift mechanism of claim 5, wherein the guide portion includes a linear guide extending in an up-and-down direction, and a slider of the linear guide is coupled to the mounting portion.

7. The lift mechanism of claim 6, wherein the mounting portion extends in a lateral direction;

8. The lift mechanism of claim 5, wherein the lift assembly further comprises a longitudinally slidably disposed mounting block, the mounting block having the guide portion disposed thereon.

9. The lift mechanism of claim 1, wherein the drive means includes a drive motor and a speed reducer, the drive motor being coaxially coupled to the speed reducer, the speed reducer including the output shaft.

10. The lift mechanism of claim 9, wherein the drive motor comprises a brake servo motor.