CN215666923U

CN215666923U - Lifting device and working machine

Info

Publication number: CN215666923U
Application number: CN202120670005.0U
Authority: CN
Inventors: 任乐乐; 郭承志; 马晓杰
Original assignee: Sany Robot Technology Co Ltd
Current assignee: Sany Robot Technology Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-01-28
Anticipated expiration: 2031-04-01

Abstract

The utility model relates to the technical field of lifting structures, in particular to a lifting device and an operation machine. The lifting device comprises a supporting table and a lifting mechanism, the lifting mechanism comprises a driving assembly, a transmission shaft and at least one connecting rod, the driving assembly is connected with the transmission shaft to drive the transmission shaft to rotate around the axial direction of the transmission shaft, one end of the connecting rod is connected with the transmission shaft, the extending direction of the connecting rod and the axial direction of the transmission shaft form a set angle, and the other end of the connecting rod is in contact with the supporting table. The utility model simplifies the structure of the lifting mechanism, has few parts, small occupied space, long service life, low cost and easy installation and maintenance.

Description

Lifting device and working machine

Technical Field

The utility model relates to the technical field of lifting structures, in particular to a lifting device and an operation machine.

Background

The AGV is an automatic transport vehicle and can automatically complete the transport of goods under the control of a dispatching system. General AGV all need possess the function of lifting, lifts with the goods with the whereabouts in handling, and present lifting mechanism structure is more complicated, and spare part kind is more, and it is big to occupy the AGV inner space, influences the AGV overall height, is difficult for installing and maintaining moreover.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lifting device and an operation machine, which are used for solving the defects that a lifting mechanism in the prior art is complex in structure, more in types of parts, large in occupied space inside an AGV, influencing the overall height of the AGV and difficult to install and maintain, and achieving the effects of simplifying the lifting structure, few parts, small in occupied space, long in service life, low in cost and easy to install and maintain.

The utility model provides a lifting device which comprises a supporting table and a lifting mechanism, wherein the lifting mechanism comprises a driving assembly, a transmission shaft and at least one connecting rod, the driving assembly is connected with the transmission shaft so as to drive the transmission shaft to rotate around the axial direction of the transmission shaft, one end of the connecting rod is connected with the transmission shaft, the extending direction of the connecting rod and the axial direction of the transmission shaft form a set angle, and the other end of the connecting rod is in contact with the supporting table.

According to the lifting device provided by the utility model, the end part of the connecting rod, which is contacted with the supporting platform, is provided with a roller or a ball, and the roller or the ball is in rolling contact with the surface of the supporting platform; or the end part of the connecting rod, which is contacted with the supporting platform, is hinged with a sliding block, and the sliding block is in sliding contact with the surface of the supporting platform.

According to the lifting device provided by the utility model, a plurality of connecting rods are arranged on the transmission shaft in parallel.

According to the lifting device provided by the utility model, the extending direction of the connecting rod is perpendicular to the axial direction of the transmission shaft.

According to the lifting device provided by the utility model, the driving assembly comprises a motor, a first gear and a second gear, the first gear is connected with the motor, the second gear is coaxially connected with the transmission shaft, and the first gear is meshed with the second gear.

According to the lifting device provided by the utility model, the lifting device further comprises a base, and the transmission shaft is arranged on the base.

According to the lifting device provided by the utility model, a guide piece is arranged between the base and the supporting platform, the guide piece comprises a guide hole and a guide rod matched with the guide hole, the guide hole is arranged on one of the base and the supporting platform, and the guide rod is arranged on the other one of the base and the supporting platform.

According to the lifting device provided by the utility model, the base is provided with the upright post, and the guide hole is arranged in the upright post along the axial direction of the upright post.

According to the lifting device provided by the utility model, the base is provided with the vertical plate, and the vertical plate is connected with the transmission shaft through the bearing.

The utility model also provides a working machine comprising a lifting device as described above.

According to the lifting device provided by the utility model, the driving assembly drives the transmission shaft to rotate, the first end of the connecting rod is arranged on the transmission shaft, and the second end of the connecting rod is in contact with the support table. An included angle with a certain angle is formed between the connecting rod and the transmission shaft, namely, the second end of the connecting rod and the transmission shaft have a set vertical distance, and the set vertical distance determines the height range of the lifting device capable of lifting the supporting table. When the supporting platform needs to be lifted, the driving assembly can drive the transmission shaft to rotate in the positive direction to drive the connecting rod to synchronously swing upwards in the positive direction by a certain angle, and the second end of the connecting rod is lifted along with the swinging so as to lift the supporting platform; when the supporting platform needs to descend, the driving assembly can drive the transmission shaft to reversely rotate to drive the connecting rod to synchronously and reversely swing downwards for a certain angle, the second end of the connecting rod falls along with the swinging, so that the supporting platform falls back, or after the second end of the connecting rod swings upwards in the positive direction to the highest point in the jacking process, the driving assembly continues to drive the transmission shaft to normally rotate to drive the connecting rod to synchronously and positively swing downwards, and the second end of the connecting rod falls along with the swinging, so that the supporting platform falls back. The utility model simplifies the structure of the lifting mechanism, has few parts, small occupied space, long service life, low cost and easy installation and maintenance.

In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings or will be understood by the practice of the present invention.

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 drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a lifting device provided by the present invention;

FIG. 2 is a schematic structural diagram of a lifting mechanism and a guide rod of the lifting device provided by the present invention;

FIG. 3 is a schematic structural diagram of a base of the lifting device provided by the present invention;

reference numerals:

100: a support table;

200: a lifting mechanism; 210: a drive assembly; 220: a drive shaft; 230: a connecting rod; 240: a roller; 250: a bearing; 211: a motor; 212: a first gear; 213: a second gear;

300: a base; 310: a column; 320: a vertical plate;

400: a guide member; 410: a guide hole; 420: a guide rod.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1, 2 and 3, a lifting apparatus according to an embodiment of the present invention includes a support table 100 and a lifting mechanism 200, wherein the lifting mechanism 200 includes a driving assembly 210, a transmission shaft 220 and at least one connecting rod 230, the driving assembly 210 is connected to the transmission shaft 220 to drive the transmission shaft 220 to rotate around an axial direction thereof, one end of the connecting rod 230 is connected to the transmission shaft 220, an extending direction of the connecting rod 230 forms a set angle with the axial direction of the transmission shaft 220, and the other end of the connecting rod 230 contacts the support table 100.

In the lifting apparatus according to the embodiment of the present invention, the driving assembly 210 drives the transmission shaft 220 to rotate, the first end of the connecting rod 230 is disposed on the transmission shaft 220, and the second end of the connecting rod 230 contacts the supporting platform 100. The link 230 and the transmission shaft 220 form an angle therebetween, that is, the second end of the link 230 and the transmission shaft 220 have a predetermined vertical distance therebetween, and the predetermined vertical distance determines a height range within which the support table 100 can be lifted by the lifting device. When the supporting table 100 needs to be lifted, the driving assembly 210 can drive the transmission shaft 220 to rotate in the positive direction to drive the connecting rod 230 to synchronously swing upwards in the positive direction by a certain angle, and the second end of the connecting rod 230 lifts along with the swinging, so that the supporting table 100 is lifted; when the supporting platform 100 needs to descend, the driving assembly 210 may drive the transmission shaft 220 to reversely rotate, so as to drive the connecting rod 230 to synchronously reversely swing downward by a certain angle, and the second end of the connecting rod 230 falls along with the swing, so as to enable the supporting platform 100 to fall back, or after the second end of the connecting rod 230 positively swings upward to the highest point in the jacking process, the driving assembly 210 continues to drive the transmission shaft 220 to normally rotate, so as to drive the connecting rod 230 to synchronously forwardly swing downward, and the second end of the connecting rod 230 falls along with the swing, so as to enable the supporting platform 100 to fall back. The utility model simplifies the structure of the lifting mechanism, has few parts, small occupied space, long service life, low cost and easy installation and maintenance.

According to one embodiment of the present invention, the end of the connecting rod 230 contacting the supporting table 100 is provided with a roller 240 or a ball, and the roller 240 or the ball is in rolling contact with the surface of the supporting table 100; or the end of the link 230 in contact with the support table 100 articulates against a slider in sliding contact with the surface of the support table 100. In this embodiment, the connecting rod 230 rolls or slides on the surface of the supporting table 100, so as to reduce friction between the two while ensuring the jacking effect, and to maximize the lifting height range compared with the connection manner such as sliding hinge.

In one embodiment, the first end of the connecting rod 230 is fixedly connected to the transmission shaft 220, the second end of the connecting rod 230 is fixedly provided with the roller 240, the outer circumferential surface of the roller 240 contacts the lower surface of the supporting table 100, the connecting rod 230 is driven to swing upward or downward by a certain angle while the transmission shaft 220 rotates, the horizontal movement of the second end of the connecting rod 230 is realized by the rolling displacement of the roller 240 on the lower surface of the supporting table 100, and the vertical movement of the second end of the connecting rod 230 is realized by the jacking or falling back of the supporting table 100 through the roller 240. In other embodiments, a ball may be further fixedly disposed at the second end of the connecting rod 230, and when the transmission shaft 220 rotates, the connecting rod 230 is driven to swing upward or downward by a certain angle, so that the second end of the connecting rod 230 moves in the horizontal direction through the rolling displacement of the ball on the lower surface of the support table 100.

In another embodiment, instead of rolling contact or sliding contact, the second end of the connecting rod 230 is hinged to a sliding block, and the driving shaft 220 rotates and drives the connecting rod 230 to swing upward or downward by a certain angle, so that the sliding block rolls on the lower surface of the supporting platform 100 to move the second end of the connecting rod 230 in the horizontal direction, thereby lifting or dropping the supporting platform 100.

According to an embodiment of the present invention, a plurality of connecting rods 230 are disposed in parallel with each other on the transmission shaft 220. In this embodiment, the transmission shaft 220 may be provided with a plurality of connecting rods 230, the first ends of the plurality of connecting rods 230 are all fixedly connected to the transmission shaft 220, the second ends are all provided with the rollers 240, when the transmission shaft 220 rotates, all the connecting rods 230 on the transmission shaft 220 swing by a certain angle, and the second ends of the connecting rods 230 are driven to swing upwards or downwards, so as to realize synchronous multi-point jacking or falling. In this embodiment, the two connecting rods 230 are disposed in parallel to each other and disposed at two ends of the transmission shaft 220, respectively, in other embodiments, the connecting rods 230 may also be disposed in non-parallel and have different lengths, that is, the longer connecting rod 230 and the shorter connecting rod 230 are both connected to the transmission shaft 220, an included angle is formed between the longer connecting rod 230 and the shorter connecting rod 230, the second end of the longer connecting rod 230 is always in contact with the lower surface of the support plate 100, and the shorter connecting rod 230 is only in contact with the lower surface of the support plate 100 when the support plate 100 is raised or lowered to a certain height range.

According to an embodiment of the present invention, the connecting rod 230 extends in a direction perpendicular to the axial direction of the driving shaft 220. In this embodiment, the connecting rod is perpendicularly connected to the transmission shaft, that is, the extending direction of the connecting rod and the axial direction of the transmission shaft form a set included angle of 90 ° right angle, and the set included angle may be an acute angle, a right angle, or the like. In other embodiments, the extending direction of the connecting rod and the axial direction of the transmission shaft can also form other set angles, such as 80 degrees, 60 degrees and the like.

According to one embodiment of the present invention, the driving assembly 210 includes a motor 211, a first gear 212 and a second gear 213, the first gear 212 is connected to the motor 211, the second gear 213 is coaxially connected to the transmission shaft 220, and the first gear 212 is engaged with the second gear 213. In this embodiment, the electrode drives the first gear 212 to rotate, the first gear 212 is engaged with and transmitted to the second gear 213, and the second gear 213 rotates and drives the coaxially connected transmission shaft 220 to rotate. The first gear 212 is a small gear, the second gear 213 is a large gear, the supporting table 100 is lowered in speed and the torque of the transmission shaft 220 is increased through the meshing transmission of the small gear and the large gear, the lifting effect of the supporting table 100 on objects with different weights is guaranteed, and the application range is wide.

According to an embodiment of the present invention, the lifting apparatus further includes a base 300, and the transmission shaft 220 is disposed on the base 300. In this embodiment, a base 300 is further disposed below the supporting table 100, and the driving shaft 220 and the motor 211 can be fixed to the base 300 as a fixing base of the driving shaft 220. The base 300 remains stationary relative to the support table 100, and the support table 100 moves away from or toward the base 300 during the raising and lowering process.

According to an embodiment of the present invention, a guide 400 is disposed between the base 300 and the support table 100, the guide 400 includes a guide hole 410 and a guide rod 420 engaged with the guide hole 410, the guide hole 410 is disposed on one of the base 300 and the support table 100, and the guide rod 420 is disposed on the other of the base 300 and the support table 100. In this embodiment, the guide rod 420 may be inserted into the guide hole 410 during the process of lifting the support table 100, and the guide rod 420 and the guide hole 410 may move relatively. In one embodiment, the guide rods 420 may be vertically disposed on the lower surface of the supporting table 100, and the guide holes 410 may be correspondingly disposed on the base 300 to be matched with the guide rods 420, or the guide rods 420 may be vertically disposed on the upper surface of the base 300, and the guide holes 410 may be correspondingly disposed on the supporting table 100 to be matched with the guide rods 420, or both the guide rods 420 and the guide holes 410 are disposed on the supporting table 100, and the guide holes 410 and the guide rods 420 are correspondingly disposed on the base 300.

In this embodiment, the guide rods 420 are vertically disposed on the lower surface of the supporting table 100, the guide holes 410 are correspondingly disposed on the base 300 and are matched with the guide rods 420, when the supporting table 100 ascends, the guide rods 420 synchronously ascend in the guide holes 410, and when the supporting table 100 descends, the guide rods 420 synchronously descend in the guide holes 410. In this embodiment, four corners of the supporting table 100 are provided with the guiding members 400, so that the supporting table 100 can stably guide the movement and can also play a role in stabilizing and assisting the support.

According to an embodiment of the present invention, a shaft 310 is disposed on the base 300, and the guide hole 410 is disposed inside the shaft 310 along an axial direction of the shaft 310. In this embodiment, the guiding hole 410 is disposed on the base 300, the guiding rod 420 is disposed on the supporting platform 100, the upright post 310 is disposed on the base 300, the guiding hole 410 is vertically disposed in the upright post 310, the guiding rod 420 is inserted into the guiding hole 410, it can be ensured that in the lifting process of the supporting platform 100, the guiding rod 420 does not separate from the guiding hole 410 even if moving up and down, the upright post 310 serves as a side wall of the guiding hole 410, and a limiting guide is provided for the movement of the guiding rod 420 therein, thereby providing more stable support and guide.

According to an embodiment of the present invention, a vertical plate 320 is disposed on the base 300, and the vertical plate 320 is connected to the transmission shaft 220 through a bearing 250. In this embodiment, two risers 320 are arranged on base 300, two risers 320 are opposite and parallel, transmission shaft 220 is installed on riser 320 through bearings 250 at two ends, riser 320 erects transmission shaft 220, and it is fixed and simultaneously to provide the support, does not influence the rotation that drive assembly 210 drives transmission shaft 220, sets up the hole on riser 320, and the tip that supplies transmission shaft 220 passes through the hole and stretches out and connect second gear 213.

The embodiment of the utility model also provides a working machine which comprises the lifting device. In this embodiment, the working machine may be an AGV transport vehicle, or other machine that needs to lift an object to a certain height.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A lifting device, characterized by: including brace table and lifting mechanism, lifting mechanism includes drive assembly, transmission shaft and an at least connecting rod, drive assembly with the transmission shaft is connected, in order to drive the transmission shaft is around its axial rotation, the one end of connecting rod with the transmission shaft is connected, just the extending direction of connecting rod with the axial of transmission shaft is the angle of settlement, the other end of connecting rod with brace table contact.

2. A lifting device according to claim 1, characterized in that: the end part of the connecting rod, which is contacted with the supporting platform, is provided with a roller or a ball, and the roller or the ball is in rolling contact with the surface of the supporting platform; or the end part of the connecting rod, which is contacted with the supporting platform, is hinged with a sliding block, and the sliding block is in sliding contact with the surface of the supporting platform.

3. A lifting device according to claim 1, characterized in that: the connecting rods are arranged on the transmission shaft in parallel.

4. A lifting device according to claim 1, characterized in that: the extending direction of the connecting rod is perpendicular to the axial direction of the transmission shaft.

5. A lifting device according to claim 1, characterized in that: the driving assembly comprises a motor, a first gear and a second gear, the first gear is connected with the motor, the second gear is coaxially connected with the transmission shaft, and the first gear is meshed with the second gear.

6. The lifting device as claimed in any one of claims 1 to 5, wherein: still include the base, the transmission shaft set up in on the base.

7. A lifting device according to claim 6, characterized in that: the base with be equipped with the guide between the brace table, the guide include the guiding hole and with guiding hole complex guide bar, the guiding hole set up in the base with on one of the brace table, the guide bar set up in the base with on another one of brace table.

8. A lifting device according to claim 7, characterized in that: the base is provided with a stand column, and the guide hole is arranged inside the stand column along the axial direction of the stand column.

9. The lifting device of claim 8, wherein: the base is provided with a vertical plate, and the vertical plate is connected with the transmission shaft through a bearing.

10. A working machine characterized in that: comprising a lifting device according to any one of claims 1-9.