CN219057416U

CN219057416U - Landing auxiliary assembly

Info

Publication number: CN219057416U
Application number: CN202223257770.3U
Authority: CN
Inventors: 樊焱卓; 卢重冰; 杨博; 朱恒亮
Original assignee: Wuhu Lingdong Acceleration Robot Technology Co ltd
Current assignee: Wuhu Lingdong Acceleration Robot Technology Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-05-23
Anticipated expiration: 2032-12-06

Abstract

The utility model provides a landing auxiliary assembly, comprising: the first auxiliary device comprises a first supporting plate and a second supporting plate, wherein the first supporting plate and the second supporting plate are arranged at intervals along the front-rear direction; and the roller is arranged between the first supporting plate and the second supporting plate, the front end and the rear end of the roller shaft of the roller are respectively movably connected with the first supporting plate and the second supporting plate, and the circumferential surface of the roller protrudes to the outer sides of the left and right directions of the first supporting plate and the second supporting plate at least at one side close to a to-be-carried piece, so that the to-be-carried piece which falls down is guided by the circumferential surface of the roller. The landing auxiliary assembly can guide the falling to-be-conveyed piece by utilizing the circumferential surface of the roller, so that the to-be-conveyed piece accurately falls and is placed in a neat way, and the skew cannot occur.

Description

Landing auxiliary assembly

Technical Field

The utility model relates to the technical field of warehouse logistics, in particular to a landing auxiliary assembly.

Background

In recent years, autonomous mobile devices such as unmanned forklifts and transfer robots have been widely used in warehouse logistics industry. In one of them application scenario, automatic mobile device can discern, fork get, transport and place the tray, but in the placing process of tray, always can appear certain positional deviation, mainly show that the tray is put askew, and this brings the trouble for next step work, for example: the tray is difficult to identify, and the lifting device which cannot be moved cannot lift the tray correctly, the tray is stored in disorder, and the like.

Accordingly, there is a need to provide an auxiliary assembly that can be used in the landing of trays that overcomes or reduces at least some of the shortcomings of the prior art described above.

Disclosure of Invention

In the present utility model, there is provided a landing aid assembly comprising: a first auxiliary device, wherein the first auxiliary device comprises:

the first support plate and the second support plate are arranged at intervals along the front-back direction; and

the roller is arranged between the first supporting plate and the second supporting plate, the front end and the rear end of the roller shaft of the roller are respectively movably connected with the first supporting plate and the second supporting plate, and the circumferential surface of the roller protrudes to the outer sides of the left and right directions of the first supporting plate and the second supporting plate at least at one side close to the to-be-carried piece, so that the circumferential surface of the roller is utilized to guide the to-be-carried piece which falls.

Optionally, the first auxiliary device includes a plurality of rollers, and the plurality of rollers are sandwiched between the first support plate and the second support plate along the up-down direction at intervals.

Alternatively, the projection of the side of the circumferential surface of the lower drum, which is closer to the workpiece, on the horizontal plane is closer to the workpiece than the upper drum.

Optionally, the projections of the rollers of the plurality of rollers overlap in a horizontal plane, and the diameter of the roller located further down is larger than the diameter of the roller located further up.

Optionally, the first support plate and the second support plate are symmetrically arranged, and the rollers of the plurality of rollers are connected with the first support plate and the second support plate at the left and right centers of the first support plate and the second support plate, and the first support plate and the second support plate have left and right widths which gradually become larger from top to bottom.

Optionally, the circumferential surfaces of the plurality of rollers share a tangential plane on a side of the circumferential surface adjacent to the article to be handled, the tangential plane having an angle of 8 ° -12 ° with the vertical plane.

Optionally, the first auxiliary device further comprises: the base, first backup pad and second backup pad are fixed mutually with the base respectively, and the base is fixed mutually with the installation face of the whereabouts district of waiting to carry the piece.

Optionally, the landing assistance assembly further comprises: and the second auxiliary device is provided with an inclined guide surface at one side close to the to-be-conveyed piece.

Optionally, the second auxiliary device is in a triangular pyramid shape, and comprises a left folding plate and a right folding plate which are spliced, wherein a hollow cavity is formed inside each folding plate, each folding plate is provided with a horizontal section and an inclined section extending upwards from the horizontal section in an inclined mode, the projection of the tail end of the inclined section on the horizontal plane overlaps with the projection of the horizontal section, and the outer side surface of the inclined section forms an inclined guide surface;

preferably, the two folding plates are welded and fixed;

preferably, a reinforcement is provided within the hollow cavity.

Optionally, the landing assistance assembly comprises: at least one pair of first auxiliary devices and at least one pair of second auxiliary devices, wherein the two first auxiliary devices of each pair of first auxiliary devices are symmetrically arranged at intervals along the left-right direction, the two second auxiliary devices of each pair of second auxiliary devices are symmetrically arranged at intervals along the left-right direction, and the first auxiliary devices and the second auxiliary devices positioned on the same side are arranged at intervals along the front-back direction

The landing auxiliary assembly comprises a first auxiliary device, wherein the first auxiliary device comprises a first supporting plate, a second supporting plate and at least one roller, the roller is arranged between the first supporting plate and the second supporting plate, the front end and the rear end of a roller of the roller are respectively movably connected with the first supporting plate and the second supporting plate, the circumferential surface of the roller protrudes out of the first supporting plate and the second supporting plate at least at one side close to a to-be-conveyed piece, so that the fallen to-be-conveyed piece can be guided and corrected by utilizing the circumferential surface of the roller, the to-be-conveyed piece is accurately fallen, the arrangement is neat, the skew is avoided, and the recognition of the subsequent to-be-conveyed piece and the lifting of lifting equipment to-be-conveyed piece are facilitated.

Furthermore, the landing auxiliary assembly is further provided with the second auxiliary device, and the inclined guide surface is arranged on one side, close to the to-be-conveyed piece, of the second auxiliary device, so that the fallen to-be-conveyed piece can be guided by utilizing the inclined guide surface to be matched with the roller, and the guiding correction of the landing auxiliary assembly to the to-be-conveyed piece is more accurate.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Features, advantages, and exemplary embodiments of the present utility model will hereinafter be described in conjunction with the appended drawings, wherein like numerals denote like elements, and wherein:

FIG. 1 is a schematic top view of a landing aid assembly and a part to be handled according to one embodiment of the present utility model.

Fig. 2 is a schematic side view of the landing aid assembly and the article to be handled of fig. 1.

Fig. 3 is a schematic side view of a first auxiliary device of the landing aid assembly of fig. 1.

Fig. 4 is a schematic perspective view of the first auxiliary device of fig. 3.

Fig. 5 is a schematic perspective view of a second auxiliary device of the landing aid assembly of fig. 1.

Fig. 6 is a schematic cross-sectional view of the second auxiliary device of fig. 5.

Fig. 7 is a schematic perspective view of a portion of the components of the second auxiliary device of fig. 5.

Detailed Description

Exemplary embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. Moreover, the dimensions and proportions of the various elements in the figures are merely illustrative and do not correspond exactly to the actual product.

The present utility model provides a landing aid assembly 100 for guiding and correcting falling parts 200 to be carried, especially trays falling synchronously with the falling of lifting equipment (such as fork truck tines) in warehouse logistics. Fig. 1 is a schematic top view of a landing aid assembly 100 and a piece 200 to be handled according to one embodiment of the present utility model. Fig. 2 is a schematic side view of the landing aid assembly 100 and the article 200 to be handled of fig. 1. Fig. 3 is a schematic side view of a first auxiliary device 300 of the landing aid assembly 100 of fig. 1. Fig. 4 is a schematic perspective view of the first auxiliary device 300 of fig. 3. Fig. 5 is a schematic perspective view of a second auxiliary device 400 of the landing aid assembly 100 of fig. 1. Fig. 6 is a schematic cross-sectional view of the second auxiliary device 400 of fig. 5. Fig. 7 is a schematic perspective view of a part of the second auxiliary device 400 of fig. 5. As used herein, directional terms such as "front", "rear", "left", "right", "up", "down", and the like are described with reference to fig. 1 and 2, and the front-rear direction and the left-right direction are indicated by double-headed arrows in fig. 1, and the up-down direction is indicated by double-headed arrows in fig. 2. The landing aid assembly 100 according to the preferred embodiment of the present utility model will be described in detail with reference to fig. 1 to 3.

As shown in fig. 1 and 3, the landing aid assembly 100 according to the embodiment of the present utility model includes: the first auxiliary device 300. The first auxiliary device 300 includes a first support plate 301 and a second support plate 302, and at least one drum 303. The first support plate 301 and the second support plate 302 are disposed at intervals in the front-rear direction. The roller 303 is sandwiched between the first support plate 301 and the second support plate 302, and front and rear ends of a roller of the roller 303 are movably connected with the first support plate 301 and the second support plate 302, respectively, so as to support the roller 303 on the two support plates, and a circumferential surface of the roller 303 protrudes to an outer side of the first support plate 301 and the second support plate 302 in a left-right direction at least at a side close to the workpiece 200, so that the fallen workpiece 200 is guided by a circumferential surface of the roller 303.

The landing auxiliary assembly 100 of the embodiment of the present utility model is configured to include a first auxiliary device 300 having a first support plate 301, a second support plate 302 and at least one roller 303, where the first support plate 301 and the second support plate 302 are disposed at intervals along a front-rear direction, the roller 303 is sandwiched between the first support plate 301 and the second support plate 302, and front and rear ends of a roller of the roller 303 are movably connected with the first support plate 301 and the second support plate 302, and a circumferential surface of the roller 303 protrudes out of the first support plate 301 and the second support plate 302 at least on a side close to the to-be-conveyed member 200, so that the to-be-conveyed member 200 can be guided and corrected by using the circumferential surface of the roller 303 to face the to-be-conveyed member 200, and further, the to-be-conveyed member 200 can be precisely dropped, is placed well, no skew occurs, and is beneficial for the subsequent recognition of the to be-conveyed member 200, lifting equipment, etc.; meanwhile, in the landing auxiliary assembly 100 according to the embodiment of the present utility model, the rotatable roller 303 is used as a guiding component, and after the roller 303 contacts with the to-be-conveyed member 200, the roller 303 can rotate under the impact of the to-be-conveyed member 200, so that a part of the impact of the to-be-conveyed member 200 can be counteracted, that is, relatively less hard contact is implemented between the to-be-conveyed member 200 and the first auxiliary device 300, so that the configuration of the roller 303 does not affect the appearance, service life, etc. of the to-be-conveyed member 200. As previously described, the parts 200 to be handled may be trays used in warehouse logistics.

The movable connection between the rollers of the roller 303 and the first support plate 301 and the second support plate 302 may be implemented by any manner of implementing movable connection of the rotating shafts in the prior art. For example, in the embodiment shown in fig. 4, the rollers of the drum 303 are movably connected with the first support plate 301 and the second support plate 302 using deep groove ball bearings, screws, and the like.

As shown in fig. 1, the landing assistance assembly 100 according to the embodiment of the present utility model may further include: and a second auxiliary device 400, wherein the second auxiliary device 400 has an inclined guide surface 401 at a side close to the member 200 to be carried. According to the landing auxiliary assembly 100 provided by the embodiment of the utility model, the second auxiliary device 400 is arranged, and the inclined guide surface 401 is arranged on one side, close to the to-be-carried piece 200, of the second auxiliary device 400, so that the fallen to-be-carried piece 200 can be guided by utilizing the inclined guide surface 401 in cooperation with the roller 303, and the landing auxiliary assembly 100 can guide and correct the to-be-carried piece 200 more accurately; meanwhile, the rollers 303 of the first auxiliary device 300 are more beneficial to the falling and correction of the to-be-carried member 200, but the to-be-carried member 200 may be jammed between the rollers 303, and the first auxiliary device 300 and the second auxiliary device 400 are matched to avoid the jam of the to-be-carried member 200, so that the falling of the to-be-carried member 200 can be better assisted.

With continued reference to FIG. 1, a landing aid assembly 100 in accordance with an embodiment of the present utility model includes: at least one pair of first auxiliary devices 300 and at least one pair of second auxiliary devices 400, wherein the two first auxiliary devices 300 of each pair of first auxiliary devices 300 are symmetrically spaced apart in the left-right direction, the two second auxiliary devices 400 of each pair of second auxiliary devices 400 are symmetrically spaced apart in the left-right direction, and the first auxiliary devices 300 and the second auxiliary devices 400 located on the same side are spaced apart in the front-rear direction. In general, a pair of first auxiliary devices 300 and a pair of second auxiliary devices 400 are provided for one article 200 to be carried, and a plurality of pairs of auxiliary devices may be provided according to actual situations. The left-right spacing of the left and right first auxiliary devices 300 and the front-rear spacing of the first and second

auxiliary devices

300 and 400 located on the same side may be adjusted according to the front-rear length and the left-right width of the workpiece 200. Referring to fig. 1 and 2, the workpiece 200 falls between the two first auxiliary devices 300 and the two second auxiliary devices 400, is guided by the two first auxiliary devices 300 and the two second auxiliary devices 400, and falls without being skewed. Generally, the left-right distance between the two bases 304 of the left and right first auxiliary devices 300 (i.e., the distance between the opposite inner sides of the two bases 304 in the left-right direction) is equal to the left-right width of the workpiece 200, and the front-rear distance between the first auxiliary device 300 and the second auxiliary device 400 located on the same side is greater than the front-rear length of the workpiece 200, so as to further ensure that the workpiece 200 is not skewed.

The specific structure, installation, etc. of the first auxiliary device 300 will be described in detail with reference to fig. 3 and 4.

Referring to fig. 3, the first auxiliary device 300 further includes a base 304, and the first support plate 301 and the second support plate 302 are respectively fixed to the base 304, and the base 304 is fixed to a mounting surface (not shown) of a falling area of the workpiece 200 to be carried. The mounting surface of the drop-down area of the workpiece 200 is typically the ground. The roller 303 may be made of stainless steel and the base 304 may be made of carbon steel, such as Q235A. The first support plate 301 and the second support plate 302 may in principle be directly fixed to the mounting surface, but in view of the portability required for the mounting of the drum 303 and the moving use of the first auxiliary device 300, a base 304 is preferably provided so as to integrate the first support plate 301, the second support plate 302 and the drum 303 all the time.

The first support plate 301 and the second support plate 302 may be detachably fixed or non-detachably fixed with the base 304. The first support plate 301 and the second support plate 302 are preferably detachably fixed to the base 304 so that the drum 303 can be replaced as needed. The first support plate 301 and the second support plate 302 may be fixed to the base 304 by a screw connection, for example, by using screws. As shown in fig. 3, the first support plate 301 and the second support plate 302 have a horizontal plate section and a vertical plate section, respectively, the two horizontal plate sections and the base 304 are fixed by screws, and the drum 303 is sandwiched between the two vertical plate sections.

The fixation of the base 304 to the mounting surface may be accomplished by any means known in the art that allows for a fixed mounting of the components. For example, referring to fig. 3, a first fixing hole (not shown) is formed in the base 304 in the up-down direction, a second fixing hole (not shown) is formed in the mounting surface corresponding to the first fixing hole in the up-down direction, and the fixing member 305 is inserted through the first fixing hole and the second fixing hole to fix the base 304 to the mounting surface. The fixing member 305 may be an expansion screw. Generally, the base 304 is provided with first fixing holes in a region of the first support plate 301 away from the second support plate 302 and a region of the second support plate 302 away from the first support plate 301, respectively. That is, the first fixing hole is not opened in the region between the first support plate 301 and the second support plate 302, so that the fixing member 305 can be prevented from affecting the rotation of the drum 303. In fig. 4, the first fixing hole, the second fixing hole, the fixing member 305 are not shown. The first auxiliary device 300 shown in fig. 3 may be installed by fixing the base 304 to the installation surface by using the expansion screw 305, fixing the first support plate 301 to the base 304 by using the screw, connecting one end of the roller 303 to the first support plate 301, fixing the second support plate 302 to the base 304 by using the screw, and connecting the other end of the roller 303 to the second support plate 302.

The first auxiliary device 300 of the embodiment of the present utility model may include a plurality of rollers 303, and the plurality of rollers 303 are interposed between the first support plate 301 and the second support plate 302 at intervals in the up-down direction. Compared with the arrangement of a single roller 303, the arrangement of a plurality of rollers 303 can realize guiding of the workpiece 200 by utilizing the plurality of rollers 303, so that the situation that the workpiece cannot be guided when the single roller 303 has rotation failure is avoided. As shown in fig. 3 and 4, the first auxiliary device 300 may include three rollers 303, a first roller 331, a second roller 332, and a third roller 333 in this order from the top. The number of the rollers 303 is not easily excessive so as not to have excessive parts and cost.

In some embodiments, the projection of the side of the circumferential surface of the lower roller 303, which is closer to the workpiece 200, on the horizontal plane is closer to the workpiece 200 than the upper roller 303. Taking fig. 4 as an example, a side of the circumferential surface of the third roller 333 near the workpiece 200 is closer to the workpiece 200 than a projection of the second roller 332 on the horizontal plane, and a side of the circumferential surface of the second roller 332 near the workpiece 200 is closer to the workpiece 200 than a projection of the first roller 331 on the horizontal plane. Thus, a stepped guide structure is formed, which can guide and calibrate the workpiece 200 better.

The stepped guide structure may be implemented in a variety of ways. For example, this may be achieved by relatively biasing the rollers of the plurality of rollers 303 having the same/different diameters; for another example, the rollers may be not offset, but the diameters of the plurality of rollers 303 may be different.

In a preferred embodiment, the projections of the rollers of the plurality of rollers 303 overlap in a horizontal plane, and the diameter of the roller 303 located further down is larger than the diameter of the roller 303 located further up. By overlapping the projections of the rollers of the plurality of rollers 303 on the horizontal plane, the diameter of the roller 303 located further below is larger than the diameter of the roller 303 located further above, a stepped guide structure can be simply and conveniently realized; at the same time, the left and right sides of the first auxiliary device 300 may form a stepped guide structure, that is, the left and right sides of the same first auxiliary device 300 may be used to guide two different pieces 200 to be carried positioned on the left and right sides of the same first auxiliary device 300. Taking fig. 4 as an example, the projections of the rollers of the first roller 331, the second roller 332, and the third roller 333 overlap in the horizontal plane, the diameter of the third roller 333 is larger than the diameter of the second roller 332, and the diameter of the second roller 332 is larger than the diameter of the first roller 331.

As shown in fig. 4, the first support plate 301 and the second support plate 302 are symmetrically disposed, and rollers of a plurality of rollers 303 are connected to the first support plate 301 and the second support plate 302 at left and right centers of the first support plate 301 and the second support plate 302, the first support plate 301 and the second support plate 302 having left and right widths that gradually become larger from top to bottom. By symmetrically arranging the first support plate 301 and the second support plate 302, the molding of the support plates can be simplified, and transportation and the like are facilitated; by providing the first support plate 301 and the second support plate 302 with the width of the left and right gradually becoming larger from top to bottom, in cooperation with the plurality of rollers 303 having the diameter gradually becoming larger from top to bottom, it is possible to form the stepped guide structure while realizing that the side of the circumferential surface of the rollers 303 near the workpiece 200 protrudes from the first support plate 301 and the second support plate 302. Referring to fig. 4, the base 304 may be rectangular plate-shaped. The vertical plate sections of the first support plate 301 and the second support plate 302 may be formed in a triangle shape having axial symmetry.

In some embodiments, as shown in fig. 2, the circumferential surfaces of the plurality of rollers 303 share a tangential plane TP on a side of the roller proximate to the article 200 to be handled, and the tangential plane TP forms an angle with the vertical plane of 8 ° -12 °, e.g., 8 °, 10 °, 12 °. If the included angle between the tangential plane TP and the vertical plane is too large, the falling speed of the workpiece 200 to be carried is affected; if the angle between the tangential plane TP and the vertical plane is too small, the guiding action may not be sufficient to complete the alignment of the article 200 to be handled. It has been found through experiments that when the angle between the tangential plane TP and the vertical plane shared by the plurality of circumferential planes is 8 ° -12 °, the correction of the workpiece 200 can be completed without substantially affecting the falling speed of the workpiece 200.

The specific structure of the second auxiliary device 400 will be described in detail with reference to fig. 5 to 7.

As shown in fig. 5, the second auxiliary device 400 has a substantially triangular pyramid shape, including two split folded plates 402 on the left and right, and a hollow cavity 404 is formed inside, wherein each folded plate 402 has a horizontal section 421 and an inclined section 422 extending obliquely upward from the horizontal section 421, a projection of the tip of the inclined section 422 on the horizontal plane overlaps with a projection of the horizontal section 421, and an outer side surface of the inclined section 422 forms an inclined guide surface 401. By arranging the second auxiliary device 400 in a substantially triangular pyramid shape, both the left and right sides of the second auxiliary device 400 can serve as inclined guide surfaces 401, that is, both the left and right sides of the same second auxiliary device 400 can be used to guide two different pieces of work to be carried 200 located on both the left and right sides of the same second auxiliary device 400.

The two folding plates 402 may be fixed by welding to simplify the molding of the second auxiliary device 400. As shown in fig. 6, the butt joint of the two horizontal sections 421 and the butt joint of the two inclined sections 422 are welded firmly along the slit, and polished flat after welding. The left and right folding plates 402 may be identical components, and the two folding plates 402 are symmetrically split. The left and right folding plates 402 may also be designed such that the two horizontal sections 421 form a mortise and tenon structure. As shown in fig. 7, two front and rear notches are formed on the horizontal section 421 of the folded plate 402 located on the right side, and two front and rear protrusions are formed on the horizontal section 421 of the folded plate 402 located on the left side corresponding to the notches, the protrusions being fitted in the notches.

As shown in fig. 7, a reinforcement member 403 may be further provided in the hollow cavity 404 of the second auxiliary device 400 to secure the strength and the service life of the second auxiliary device 400.

Referring to fig. 5 and 7, the inclined section 422 extends upward from the center of the horizontal section 421, a third fixing hole 420 is formed in a portion of the horizontal section 421 where the inclined section 422 is not disposed, a fourth fixing hole (not shown) is formed on the mounting surface of the falling area of the to-be-handled member 200 corresponding to the third fixing hole 420, and the fixing of the second auxiliary device 400 and the mounting surface is achieved by penetrating the third fixing hole 420 and the fourth fixing hole with a fixing member (not shown). The fixing member may be a screw.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "one example," "some embodiments," or "preferred embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the example or embodiment is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model are described above in detail. However, aspects of the present utility model are not limited to the above-described embodiments. Various modifications and substitutions may be applied to the above-described embodiments without departing from the scope of the present utility model.

Claims

1. A landing aid assembly, the landing aid assembly comprising: a first auxiliary device, wherein the first auxiliary device comprises:

a first support plate and a second support plate, which are arranged at intervals along the front-rear direction; and

the roller is arranged between the first supporting plate and the second supporting plate, the front end and the rear end of the roller shaft of the roller are respectively movably connected with the first supporting plate and the second supporting plate, and the circumferential surface of the roller protrudes to the outer sides of the left and right directions of the first supporting plate and the second supporting plate at least at one side close to a to-be-carried piece, so that the to-be-carried piece which falls down is guided by the circumferential surface of the roller.

2. The landing aid assembly of claim 1, wherein,

the first auxiliary device comprises a plurality of rollers, and the rollers are clamped between the first supporting plate and the second supporting plate at intervals along the up-down direction.

3. The landing aid assembly of claim 2, wherein,

the projection of the side of the circumferential surface of the drum located further down, which is close to the workpiece, on the horizontal plane is closer to the workpiece than the drum located further up.

4. The landing aid assembly of claim 2, wherein,

the projections of the rollers of the plurality of rollers on a horizontal plane overlap, and the diameter of the roller positioned further below is larger than the diameter of the roller positioned further above.

5. The drop assist assembly of claim 4 wherein,

the first backup pad with the second backup pad symmetry sets up, the roller bearing of a plurality of cylinders first backup pad with the center department about the second backup pad with first backup pad with the second backup pad is connected, first backup pad with the second backup pad has from top to bottom the width about the grow gradually.

6. The landing aid assembly of claim 2, wherein,

and the circumferential surfaces of the rollers share a tangential plane at one side close to the to-be-conveyed piece, and the included angle between the tangential plane and the vertical plane is 8-12 degrees.

7. The landing aid assembly of claim 1, wherein,

the first auxiliary device further includes: the first supporting plate and the second supporting plate are respectively fixed with the base, and the base is fixed with the installation surface of the falling area of the to-be-carried piece.

8. The landing aid assembly of claim 1, further comprising: a second auxiliary device, wherein,

the second auxiliary device is provided with an inclined guide surface at one side close to the to-be-carried piece.

9. The drop assist assembly of claim 8 wherein,

the second auxiliary device is in a triangular pyramid shape and comprises a left folding plate and a right folding plate which are spliced, a hollow cavity is formed in the folding plate, each folding plate is provided with a horizontal section and an inclined section which extends upwards obliquely from the horizontal section, the projection of the tail end of the inclined section on the horizontal plane is overlapped with the projection of the horizontal section, and the outer side face of the inclined section forms the inclined guide surface.

10. The drop assist assembly of claim 9 wherein,

and the two folding plates are welded and fixed.

11. The drop assist assembly of claim 9 wherein,

and a reinforcing piece is arranged in the hollow cavity.

12. The drop assist assembly of claim 8 wherein,

the landing aid assembly includes: at least one pair of first auxiliary devices and at least one pair of second auxiliary devices, wherein the two first auxiliary devices of each pair of first auxiliary devices are symmetrically arranged at intervals along the left-right direction, the two second auxiliary devices of each pair of second auxiliary devices are symmetrically arranged at intervals along the left-right direction, and the first auxiliary devices and the second auxiliary devices which are positioned on the same side are arranged at intervals along the front-back direction.