Auxiliary unloading device

Abstract

The invention discloses an auxiliary unloading device. A conveying assembly of the auxiliary unloading device is rotationally connected to a supporting mechanism, the conveying assembly has a storage state in which at least part of conveying mechanisms are stacked and an unfolding state in which the overlapping area between the adjacent conveying mechanisms is reduced, and each conveying mechanism can convey to-be-unloaded objects. And the angle adjusting mechanism can enable the conveying assembly to rotate relative to the supporting mechanism so as to adjust the conveying direction of the to-be-unloaded object conveyed by the conveying mechanism. The conveying assembly of the auxiliary unloading device is compact in structure and small in occupied space in the storage state, so that the auxiliary unloading device is easy to store and convenient to move, the conveying assembly can be switched to the unfolding state, the orientation of the conveying assembly is adjusted through the angle adjusting mechanism, the top end of the conveying assembly can be flexibly in butt joint with a transport vehicle, and the transportation efficiency is improved. And the to-be-unloaded object can automatically slide to the bottom end of the conveying assembly along the obliquely arranged conveying assembly under the action of gravity, so that the working intensity of unloading workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics equipment, and in particular to an auxiliary vehicle unloading device. Background Art

[0002] The goods purchased by consumers are generally transported to distribution stations by transport vehicles, where they are manually unloaded and sorted before being delivered to consumers by couriers. In the unloading process after the transport vehicle arrives at the distribution station, the scattered goods piled up in the transport vehicle are generally unloaded one by one by hand, which has low overall unloading efficiency and consumes a lot of manpower.

[0003] In order to improve the unloading efficiency, some distribution stations are equipped with common belt conveyors in the market to transfer items from the inside of the transport vehicle to the outside of the transport vehicle. However, since the area of ​​general distribution stations is very small, the existing belt conveyor equipment is large in size and complex in structure, which is not only inconvenient to move and use, but also has a high manufacturing cost and is not easy to promote and apply.

[0004] Therefore, how to propose an auxiliary unloading device which is small in size, easy to use and move is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary unloading device, which has a compact structure, a small volume, and is convenient to use and move.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An auxiliary unloading device comprises: a supporting mechanism; a conveying assembly, which is rotatably connected to the supporting mechanism, the conveying assembly comprises at least two conveying mechanisms, and the conveying assembly has a storage state in which at least some of the conveying mechanisms are stacked and an expanded state in which the overlapping area between adjacent conveying mechanisms is reduced, and each of the conveying mechanisms is capable of conveying objects to be unloaded; an angle adjustment mechanism, which is arranged between the conveying assembly and the supporting mechanism and can cause the conveying assembly to rotate relative to the supporting mechanism to adjust the conveying direction of the conveying mechanism to convey the objects to be unloaded.

[0008] Preferably, the conveying assembly includes two conveying mechanisms, the two conveying mechanisms include an upper conveying mechanism and a lower conveying mechanism arranged vertically, one end of the lower conveying mechanism is rotatably connected to one end of the supporting mechanism, the angle adjustment mechanism is arranged between the other end of the supporting mechanism and the other end of the lower conveying mechanism, and the upper conveying mechanism can be slidably arranged on the lower conveying mechanism.

[0009] Preferably, the conveying assembly also includes a tensioning mechanism, which includes a first mounting plate, an elastic member and a tensioning wheel, the top end of the first mounting plate is connected to the upper conveying mechanism, the tensioning wheel is rotatably connected to the bottom end of the first mounting plate, and the tensioning wheel is elastically pressed against the bottom surface of the lower conveying mechanism under the action of the elastic member.

[0010] Preferably, the conveying assembly also includes a limiting mechanism, which includes a second mounting plate and a limiting roller, the bottom end of the second mounting plate is connected to the lower conveying mechanism, the limiting roller is rotatably connected to the top end of the second mounting plate, and the limiting roller is limitedly abutted against the top surface of the upper conveying mechanism.

[0011] Preferably, the upper conveying mechanism includes an upper frame and a limit block, wherein the limit block is arranged on the side of the upper frame, and the limit block can be abutted against the second mounting plate to limit the maximum sliding distance of the upper conveying mechanism relative to the lower conveying mechanism.

[0012] Preferably, the upper conveying mechanism is a synchronous belt mechanism or a conveying roller mechanism; and / or, the lower conveying mechanism is a synchronous belt mechanism or a conveying roller mechanism.

[0013] Preferably, a handle is provided on one side of the upper conveying mechanism where the angle adjustment mechanism is provided.

[0014] Preferably, the angle adjustment mechanism includes a lifting bracket and a screw, the screw is rotatably connected to the supporting mechanism, the top end of the lifting bracket is rotatably connected to the conveying assembly, and a nut block is provided at the bottom end of the lifting bracket, the nut block is threadedly connected to the screw and forms a screw nut pair.

[0015] Preferably, the driving end of the screw rod is connected to a hand wheel or a driving motor.

[0016] Preferably, a guide rail is provided on the support mechanism, and the lifting bracket is slidably connected to the guide rail.

[0017] Beneficial effects of the present invention:

[0018] The conveying assembly of the auxiliary unloading device has a storage state in which at least part of the conveying mechanisms are stacked and an expanded state in which the overlapping area between adjacent conveying mechanisms is reduced. The conveying assembly is compact in structure and occupies little space in the storage state, making the auxiliary unloading device easy to store and move. When the auxiliary unloading device needs to perform unloading operations, the conveying assembly can be switched from the storage state to the expanded state, and the angle adjustment mechanism can adjust the direction of the conveying assembly in the expanded state, so that the top of the conveying assembly can flexibly dock with the transport vehicle, and the objects to be unloaded can automatically slide to the bottom of the conveying assembly along the inclined conveying assembly under the action of gravity, reducing the work intensity of the unloading workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the auxiliary unloading device provided by an embodiment of the present invention when the conveying component is in a storage state;

[0020] Figure 2 is a schematic diagram of the auxiliary unloading device provided by an embodiment of the present invention at a certain viewing angle when the conveying assembly is in an unfolded state;

[0021] Figure 3 is a schematic diagram of the auxiliary unloading device provided by an embodiment of the present invention when the conveying assembly is in an unfolded state at another viewing angle;

[0022] Figure 4 is a schematic diagram of the auxiliary unloading device provided by an embodiment of the present invention when the conveying assembly is in an unfolded state at another viewing angle;

[0023] Figure 5 is a schematic diagram of an upper conveying mechanism of an auxiliary unloading device provided in an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of an upper frame of an auxiliary unloading device provided in an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of a lower conveying mechanism of an auxiliary unloading device provided in an embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of a lower frame of an auxiliary unloading device provided in an embodiment of the present invention;

[0027] Fig. 9 is a schematic diagram of a tensioning mechanism of an auxiliary unloading device provided in an embodiment of the present invention;

[0028] Fig.10 is a schematic diagram of a limiting mechanism of an auxiliary unloading device provided in an embodiment of the present invention;

[0029] Fig.11It is an enlarged view of a part of the structure of the auxiliary unloading device provided by an embodiment of the present invention when the conveying component is in a storage state.

[0030] In the figure:

[0031] 100. Support mechanism;

[0032] 200, conveying assembly;

[0033] 210, lower conveying mechanism; 211, lower frame; 2111, second cross bar; 2112, second longitudinal bar; 2113, third fixed plate; 2114, fourth fixed plate; 212, second active roller; 213, second driven roller; 214, second synchronous belt;

[0034] 220, upper conveying mechanism; 221, upper frame; 2211, first cross bar; 2212, first longitudinal bar; 2213, first fixed plate; 2214, second fixed plate; 222, first active roller; 223, first driven roller; 224, first synchronous belt;

[0035] 230, limit block;

[0036] 300, angle adjustment mechanism; 301, lifting bracket; 302, screw rod; 303, nut block; 304, hand wheel; 305, guide rail;

[0037] 400, tensioning mechanism; 401, first mounting plate; 402, tensioning wheel; 403, elastic member; 404, first resistance pad; 405, rotating plate; 406, limiting plate; 407, bolt; 408, locking nut;

[0038] 500, limiting mechanism; 501, second mounting plate; 502, limiting roller; 503, second resistance pad;

[0039] 600, power box;

[0040] 700, universal wheel;

[0041] 800, button box;

[0042] 900. Handle. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present invention provides an auxiliary unloading device, which can assist unloading workers in unloading objects to be unloaded piled in a carriage of a transport vehicle, so that the unloading workers do not have to move the objects to be unloaded out of the carriage piece by piece, thereby improving the unloading efficiency and reducing the labor intensity of the unloading workers.

[0047] like Figures 1 to 4 As shown, the auxiliary unloading device includes a support mechanism 100, a conveying assembly 200 and an angle adjustment mechanism 300. The support mechanism 100 is a fixed installation mechanism of the auxiliary unloading device, and the conveying assembly 200 and the angle adjustment mechanism 300 are both installed on the installation mechanism. The conveying assembly 200 is used to convey the objects to be unloaded. In the embodiment of the present invention, there is no restriction on the specific type and size of the objects to be unloaded. Specifically, the conveying assembly 200 is rotatably connected to the support mechanism 100, and the conveying assembly 200 includes at least two conveying mechanisms, and the conveying assembly 200 has a storage state in which at least part of the conveying mechanisms are stacked and an unfolded state in which the overlapping area between adjacent conveying mechanisms is reduced, and each conveying mechanism can convey the objects to be unloaded. The angle adjustment mechanism 300 is arranged between the conveying assembly 200 and the support mechanism 100, and can make the conveying assembly 200 rotate relative to the support mechanism 100 to adjust the conveying direction of the conveying mechanism to convey the objects to be unloaded.

[0048] The conveying assembly 200 of the auxiliary unloading device has two states: a storage state and an unfolded state. When the conveying assembly 200 is in the storage state, at least part of the conveying mechanism is stacked, so that the conveying assembly 200 has a compact structure and occupies a small space, so that the auxiliary unloading device is easy to store and move. In addition, when the auxiliary unloading device needs to perform unloading operations, the conveying assembly 200 can be switched from the storage state to the unfolded state, and the direction of the conveying assembly 200 in the unfolded state is adjusted by the angle adjustment mechanism 300, so that the conveying assembly 200 in the unfolded state can be adjusted from a horizontal state to an inclined state, so that the top of the conveying assembly 200 can be flexibly docked with transport vehicles of different heights, and the objects to be unloaded can automatically slide to the bottom of the conveying assembly 200 along the inclined conveying assembly 200 under the action of gravity, reducing the work intensity of the unloading workers and making the objects to be unloaded less likely to be damaged.

[0049] It should be noted that the direction in which each conveying mechanism conveys the objects to be unloaded can be the same or different, as long as it does not affect the movement of the objects to be unloaded from the higher end to the lower end of the conveying assembly 200 in the unfolded state.

[0050] Continue to refer to Figure 1 As shown, in order to reduce the manufacturing cost and weight of the support mechanism 100, the support mechanism 100 is a frame structure made of multiple rods, and the rods can be round rods or square rods. In some embodiments, the support mechanism 100 is formed by welding multiple square steels. In some embodiments, the support mechanism 100 is also fixedly connected to the power box 600.

[0051] Furthermore, in order to improve the mobility of the auxiliary unloading device, a plurality of universal wheels 700 are provided at the bottom end of the support mechanism 100, so that the unloading worker can easily move the entire auxiliary unloading device to the side of the transport vehicle or push the auxiliary unloading device away from the transport vehicle for storage, thereby reducing the labor intensity of the unloading worker. In a specific embodiment, the support mechanism 100 is roughly in the shape of a cube, and the number of universal wheels 700 is four, and the four universal wheels 700 are respectively provided at the four corners of the support mechanism 100.

[0052] The number of conveying mechanisms included in the conveying assembly 200 can be set to two, three or more according to needs. Among the multiple conveying mechanisms, there is a conveying mechanism that is rotatably connected to the support mechanism 100. As for which conveying mechanism it is, it can be the conveying mechanism at the bottom layer, the conveying mechanism at the middle layer, or the conveying mechanism at the bottom layer according to needs. In addition, among the multiple conveying mechanisms, there is a conveying mechanism that is connected to the angle adjustment mechanism 300. The conveying mechanism can be the same as the conveying mechanism connected to the support mechanism 100, or it can be different, as long as the first connection point on the conveying assembly 200 connected to the support mechanism 100 and the second connection point on the conveying assembly 200 connected to the angle adjustment mechanism 300 are arranged at intervals.

[0053] In some embodiments, Figures 2 to 4 As shown, the conveying assembly 200 includes two conveying mechanisms, which are an upper conveying mechanism 220 and a lower conveying mechanism 210. The upper conveying mechanism 220 is arranged above the lower conveying mechanism 210, one end of the lower conveying mechanism 210 is rotatably connected to one end of the supporting mechanism 100, and the angle adjustment mechanism 300 is arranged between the other end of the supporting mechanism 100 and the other end of the lower conveying mechanism 210. The upper conveying mechanism 220 can be slidably arranged on the lower conveying mechanism 210.

[0054] The lower conveying mechanism 210 is connected to the supporting mechanism 100 and the angle adjustment mechanism 300 at the same time, so that the auxiliary unloading device has good stability, so that the objects to be unloaded can be smoothly transported. The upper conveying mechanism 220 is slidably connected to the lower conveying mechanism 210, and the upper conveying mechanism 220 can be moved to a storage state directly above the lower conveying mechanism 210 by pushing and pulling the upper conveying mechanism 220, and the upper conveying mechanism 220 can be moved to an unfolded state staggered from the lower conveying mechanism 210. The operation is simple, and the state switching efficiency of the conveying assembly 200 is high.

[0055] like Figure 5 As shown, in some embodiments, the upper conveying mechanism 220 can be a synchronous belt mechanism. Specifically, the synchronous belt mechanism includes an upper frame 221, a first active roller 222, a first driven roller 223 and a first synchronous belt 224. The first active roller 222 and the first driven roller 223 are installed on two opposite sides of the upper frame 221, and the first synchronous belt 224 is arranged to bypass the first active roller 222 and the first driven roller 223. The input end of the first active roller 222 is connected to a first motor. Driven by the first motor, the first active roller 222 rotates around its central axis, thereby driving the first synchronous belt 224 to rotate, and the unloaded parts placed on the first synchronous belt 224 can move synchronously.

[0056] like Figure 6As shown, the upper frame 221 is a frame structure formed by splicing a plurality of rods. In some embodiments, the upper frame 221 includes a first frame body, two first fixing plates 2213 and two second fixing plates 2214. The first frame body includes two first cross bars 2211 arranged at intervals and parallel to each other and a plurality of first longitudinal bars 2212 connected between the two first cross bars 2211, and the plurality of first longitudinal bars 2212 are arranged at intervals. The two first fixing plates 2213 are located on the same side of the first frame body and are respectively connected to the two first cross bars 2211, and the two ends of the first active roller 222 are rotatably connected to the two first fixing plates 2213. The two second fixing plates 2214 are located on the other side of the first frame body, the two first fixing plates 2213 and the two second fixing plates 2214 are respectively located at the four corners of the first frame body, the two second fixing plates 2214 are respectively connected to the two first cross bars 2211, and the two ends of the first driven roller 223 are rotatably connected to the two second fixing plates 2214.

[0057] Of course, in addition to the synchronous belt mechanism, the upper conveying mechanism 220 can also be a conveying roller mechanism, which includes a plurality of transmission rollers arranged at intervals and a power member for driving the plurality of transmission rollers to rotate around their own central axes respectively, and the power member can be a combination of a motor and a pulley mechanism, or a combination of a motor and a gear mechanism, and the plurality of conveying rollers are respectively connected to a pulley or a gear, so that the plurality of conveying rollers can rotate simultaneously under the drive of one motor. Alternatively, the power member can also be a plurality of motors, each of which drives a transmission roller to rotate respectively.

[0058] In order to facilitate the user to push and pull the upper conveying mechanism 220, continue to refer to Figure 5 As shown, a handle 900 is also provided at the proximal end of the upper conveying mechanism 220, and the handle 900 is connected between the two first mounting plates 401. It should be noted that the handle 900 and the angle adjustment mechanism 300 are located on the same side of the auxiliary unloading device.

[0059] Continue to refer to Figure 7 As shown, in some embodiments, the lower conveying mechanism 210 can be a synchronous belt mechanism. Specifically, the synchronous belt mechanism includes a lower frame 211, a second active roller 212, a second driven roller 213 and a second synchronous belt 214. The second active roller 212 and the second driven roller 213 are installed on two opposite sides of the lower frame 211, and the second synchronous belt 214 is arranged around the second active roller 212 and the second driven roller 213. The input end of the second active roller 212 is connected to a second motor. Driven by the second motor, the second active roller 212 rotates around its central axis, thereby driving the second synchronous belt 214 to rotate, and the unloaded parts placed on the second synchronous belt 214 can move synchronously.

[0060] The lower frame 211 is a frame structure formed by splicing a plurality of rods. Figure 8 As shown, the lower frame 211 includes a second frame body, two third fixing plates 2113 and two fourth fixing plates 2114. The second frame body includes two second cross bars 2111 arranged at intervals and parallel to each other and a plurality of second longitudinal bars 2112 connected between the two second cross bars 2111, and the plurality of second longitudinal bars 2112 are arranged at intervals. The two third fixing plates 2113 are located on the same side of the second frame body and are respectively connected to the two second cross bars 2111, and the two ends of the second active roller 212 are rotatably connected to the two third fixing plates 2113. The two fourth fixing plates 2114 are located on the other side of the second frame body, the two third fixing plates 2113 and the two fourth fixing plates 2114 are respectively located at the four corners of the second frame body, the two fourth fixing plates 2114 are respectively connected to the two second cross bars 2111, and the two ends of the second driven roller 213 are rotatably connected to the two fourth fixing plates 2114. It should be noted that both ends of the first active roller 222 and both ends of the first driven roller 223 of the upper conveying mechanism 220 are respectively in contact with the top surfaces of the two second cross bars 2111 and can roll on the top surfaces of the second cross bars 2111 .

[0061] Of course, in addition to the synchronous belt mechanism, the lower conveying mechanism 210 can also be a conveying roller mechanism. The structure of the conveying roller mechanism has been introduced above and will not be repeated here. It should be noted that the structures of the upper conveying mechanism 220 and the lower conveying mechanism 210 can be the same or different. For example, in some embodiments, the upper conveying mechanism 220 and the lower conveying mechanism 210 are both synchronous belt mechanisms; in some embodiments, the upper conveying mechanism 220 and the lower conveying mechanism 210 are both conveying roller mechanisms; in some embodiments, one of the upper conveying mechanism 220 and the lower conveying mechanism 210 is a synchronous belt mechanism, and the other is a conveying roller mechanism. Of course, when the number of conveying mechanisms exceeds two, each conveying mechanism can be a synchronous belt mechanism, a conveying roller mechanism, or other mechanism that can realize the transmission of the objects to be unloaded.

[0062] Continue to refer to Figure 5 As shown, the conveying assembly 200 also includes a tensioning mechanism 400, which is used to provide an adjustable positive pressure for two adjacent conveying mechanisms and to clamp the two adjacent conveying mechanisms so that the upper conveying mechanism 220 does not generate displacement perpendicular to the conveying direction during operation, and ensures that the upper conveying mechanism 220 can be driven by manpower when it needs to be pulled or retracted.

[0063] Specifically, Fig. 9As shown, the tensioning mechanism 400 includes a first mounting plate 401, an elastic member 403 and a tensioning wheel 402. The top end of the first mounting plate 401 is connected to the upper conveying mechanism 220. Specifically, the first mounting plate 401 is connected to the side wall surface of the first cross bar 2211 of the upper frame 221. The connection method includes but is not limited to screw connection, welding, etc. The tensioning wheel 402 is rotatably connected to the bottom end of the first mounting plate 401. The tensioning wheel 402 is elastically pressed against the bottom surface of the lower conveying mechanism 210 under the action of the elastic member 403.

[0064] In some embodiments, continue to refer to Fig. 9 As shown, the tensioning mechanism 400 further includes a first resistance pad 404, which is arranged on the inner side of the first mounting plate 401. During the movement of the upper conveying mechanism 220, the first resistance pad 404 is attached to the side wall surface of the second crossbar 2111 of the lower frame 211 of the lower conveying mechanism 210, so that there is a certain damping force between the upper conveying mechanism 220 and the lower conveying mechanism 210, and the damping force can not only enable the conveying assembly 200 to maintain in the storage state without external force, but also enable the conveying assembly 200 to push and pull the upper conveying mechanism 220 only by manpower, and stop applying force to stop the upper conveying mechanism 220 from moving, so as to facilitate the control of the pull-out length of the upper conveying mechanism 220 relative to the lower conveying mechanism 210, so that the pull-out length of the entire upper conveying mechanism 220 can be controlled to any value within 2.5 meters. Optionally, the first resistance pad 404 is a polyurethane pad.

[0065] In some embodiments, continue to refer to Fig. 9 As shown, the elastic member 403 is a coil spring, and the tensioning mechanism 400 further includes a rotating plate 405, a limiting plate 406, a bolt 407 and a locking nut 408. One end of the rotating plate 405 is rotatably connected to the bottom end of the first mounting plate 401, and the tensioning wheel 402 is rotatably connected to the rotating plate 405. The other end of the rotating plate 405 is provided with a first threaded hole, one end of the limiting plate 406 is fixed to the first mounting plate 401, and the other end of the limiting plate 406 is provided with a second threaded hole. The coil spring is sleeved on the stud of the bolt 407, and the screw passes through the second threaded hole and the first threaded hole and is threadedly connected with the locking nut 408. One end of the coil spring is limited at the head of the bolt 407, and the other end of the coil spring presses on the top surface of the limiting plate 406, and the locking nut 408 presses on the bottom surface of the rotating plate 405. Such an arrangement enables the tensioning wheel 402 to be smoothly placed on the bottom surface of the lower frame 211 of the lower conveying mechanism 210, and facilitates flexible adjustment of the coil spring so that the positive pressure provided by the coil spring is within an appropriate range.

[0066] In some embodiments, there are two tensioning mechanisms 400, which are respectively connected to the outer wall surfaces of the two first cross bars 2211 of the upper frame 221 and are located at the far end of the upper conveying mechanism 220. The far end here is relative to the near end. The user pushes and pulls the near end of the upper conveying mechanism 220 to make the upper conveying mechanism 220 slide relative to the lower conveying mechanism 210. Such a configuration makes the movement stability of the upper conveying mechanism 220 better.

[0067] In addition, it should be noted that Fig.11 As shown, when the conveying assembly 200 is in the storage state, the first mounting plate 401 of the tensioning mechanism 400 can be located on the same side as the third fixing plate 2113 of the lower conveying mechanism 210 and abut against each other, thus forming an origin limit.

[0068] Continue to refer to Figure 7 As shown, the conveying assembly 200 further includes a limiting mechanism 500, which is disposed on the lower conveying mechanism 210 and can limit the upper conveying mechanism 220 so that the upper conveying mechanism 220 cannot be lifted upward. Fig.10 As shown, the limiting mechanism 500 includes a second mounting plate 501 and a limiting roller 502. The bottom end of the second mounting plate 501 is connected to the lower conveying mechanism 210. The bottom end of the second mounting plate 501 is specifically connected to the outer wall surface of the second crossbar 2111 of the lower frame 211. The connection method includes but is not limited to screw connection, welding, etc. The limiting roller 502 is rotatably connected to the top end of the second mounting plate 501, and the limiting roller 502 is limitedly abutted against the top surface of the upper conveying mechanism 220.

[0069] In some embodiments, continue to refer to Fig.10As shown, the limiting mechanism 500 also includes a second resistance pad 503, which is arranged on the inner side of the second mounting plate 501. During the movement of the upper conveying mechanism 220, the second resistance pad 503 is attached to the side wall surface of the first crossbar 2211 of the upper frame 221 of the upper conveying mechanism 220, so that there is a certain damping force between the upper conveying mechanism 220 and the lower conveying mechanism 210, which can not only enable the conveying assembly 200 to maintain in the storage state without external force, but also enable the conveying assembly 200 to push and pull the upper conveying mechanism 220 only by manpower, and stop applying force to stop the upper conveying mechanism 220 from moving, thereby controlling the pull-out length of the upper conveying mechanism 220 relative to the lower conveying mechanism 210, so that the pull-out length of the entire upper conveying mechanism 220 can be controlled to any value within 2.5 meters. Optionally, the second resistance pad 503 is a polyurethane pad. It should be noted that the second resistance pad 503 and the first resistance pad 404 may exist at the same time, or one of them may exist selectively, as long as a damping force within a suitable range is provided.

[0070] In some embodiments, there are two limiting mechanisms 500 , which are respectively fixedly arranged on both sides of the lower conveying mechanism 210 perpendicular to the conveying direction, and the two second mounting plates 501 are respectively fixedly connected to the side wall surfaces of the two second cross bars 2111 .

[0071] Further, continue to refer to Figure 4 and Figure 6 As shown, the upper conveying mechanism 220 also includes a limit block 230, which is arranged on the side of the upper frame 221. The limit block 230 can be in limited contact with the second mounting plate 501 to limit the maximum sliding distance of the upper conveying mechanism 220 relative to the lower conveying mechanism 210.

[0072] In some embodiments, there are two limit blocks 230 , which are respectively disposed on the outer wall surfaces of the two first cross bars 2211 of the upper frame 221 , and are respectively used for limiting and abutting against the two limit mechanisms 500 .

[0073] Continue to refer to Figure 3 As shown, the angle adjustment mechanism 300 includes a lifting bracket 301 and a screw rod 302. The screw rod 302 is rotatably connected to the support mechanism 100. The top end of the lifting bracket 301 is rotatably connected to the conveying assembly 200. A nut block 303 is provided at the bottom end of the lifting bracket 301. The nut block 303 is threadedly connected to the screw rod 302 to form a screw rod nut pair.

[0074] In some embodiments, the lifting bracket 301 is a rectangular frame formed by welding square steel.

[0075] In some embodiments, continue to refer to Figure 3 As shown, the driving end of the screw rod 302 is connected to a hand-cranked wheel 304, and the screw rod 302 is rotated by manually cranking the hand-cranked wheel 304. In some parallel embodiments, the driving end of the screw rod 302 is connected to a drive motor, and the screw rod 302 is driven by the drive motor.

[0076] In some embodiments, continue to refer to Figure 3 As shown, the support mechanism 100 is provided with a guide rail 305, and the lifting bracket 301 is slidably connected to the guide rail 305, so that the arrangement is conducive to improving the movement accuracy of the lifting bracket 301. Further, the number of the guide rails 305 is two, and the two guide rails 305 are arranged at intervals. A slider is respectively provided on both sides of the lifting bracket 301, and the slider is slidably connected to the guide rail 305 on the corresponding side.

[0077] Continue to refer to Figures 1 to 4 As shown, the auxiliary unloading device also includes a button box 800, which is connected between the two first mounting plates 401 and is arranged adjacent to the handle 900. The button box 800 includes control buttons and a control mechanism, and the control mechanism can be a centralized or distributed controller, for example, the controller can be a single microcontroller, or can be composed of multiple distributed microcontrollers, and the microcontroller can run a control program to control the above-mentioned power parts to realize their functions, for example, the drive motor, the first motor and the second motor, etc., and different motors can be controlled by pressing different control buttons.

[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An auxiliary unloading device, characterized in that: include: Support mechanism (100); A conveying assembly (200), the conveying assembly (200) being rotatably connected to the supporting mechanism (100), the conveying assembly (200) comprising at least two conveying mechanisms, and the conveying assembly (200) having a storage state in which at least some of the conveying mechanisms are stacked and an expanded state in which the overlapping area between adjacent conveying mechanisms is reduced, and each of the conveying mechanisms is capable of conveying objects to be unloaded; An angle adjustment mechanism (300) is arranged between the conveying assembly (200) and the supporting mechanism (100), and is capable of causing the conveying assembly (200) to rotate relative to the supporting mechanism (100) so as to adjust the conveying direction of the object to be unloaded by the conveying mechanism.

2. The auxiliary unloading device according to claim 1, characterized in that: The conveying assembly (200) comprises two conveying mechanisms, the two conveying mechanisms comprising an upper conveying mechanism (220) and a lower conveying mechanism (210) arranged one above the other, one end of the lower conveying mechanism (210) being rotatably connected to one end of the supporting mechanism (100), the angle adjustment mechanism (300) being arranged between the other end of the supporting mechanism (100) and the other end of the lower conveying mechanism (210), and the upper conveying mechanism (220) being slidably arranged on the lower conveying mechanism (210).

3. The auxiliary unloading device according to claim 2, characterized in that: The conveying assembly (200) further comprises a tensioning mechanism (400), wherein the tensioning mechanism (400) comprises a first mounting plate (401), an elastic member (403) and a tensioning wheel (402), wherein the top end of the first mounting plate (401) is connected to the upper conveying mechanism (220), and the tensioning wheel (402) is rotatably connected to the bottom end of the first mounting plate (401), and the tensioning wheel (402) is elastically pressed against the bottom surface of the lower conveying mechanism (210) under the action of the elastic member (403).

4. The auxiliary unloading device according to claim 2, characterized in that: The conveying assembly (200) further comprises a limiting mechanism (500), wherein the limiting mechanism (500) comprises a second mounting plate (501) and a limiting roller (502), wherein the bottom end of the second mounting plate (501) is connected to the lower conveying mechanism (210), the limiting roller (502) is rotatably connected to the top end of the second mounting plate (501), and the limiting roller (502) is limitedly abutted against the top surface of the upper conveying mechanism (220).

5. The auxiliary unloading device according to claim 4, characterized in that: The upper conveying mechanism (220) comprises an upper frame (221) and a limit block (230), wherein the limit block (230) is arranged on the side of the upper frame (221), and the limit block (230) can be in limited contact with the second mounting plate (501) to limit the maximum sliding distance of the upper conveying mechanism (220) relative to the lower conveying mechanism (210).

6. The auxiliary unloading device according to claim 2, characterized in that: The upper conveying mechanism (220) is a synchronous belt mechanism or a conveying roller mechanism; And / or, the lower conveying mechanism (210) is a synchronous belt mechanism or a conveying roller mechanism.

7. The auxiliary unloading device according to claim 2, characterized in that: A handle (900) is provided on one side of the upper conveying mechanism (220) where the angle adjustment mechanism (300) is provided.

8. The auxiliary unloading device according to any one of claims 1 to 7, characterized in that: The angle adjustment mechanism (300) comprises a lifting bracket (301) and a screw rod (302), wherein the screw rod (302) is rotatably connected to the support mechanism (100), the top end of the lifting bracket (301) is rotatably connected to the conveying assembly (200), and a nut block (303) is provided at the bottom end of the lifting bracket (301), and the nut block (303) is threadedly connected to the screw rod (302) to form a screw rod nut pair.

9. The auxiliary unloading device according to claim 8, characterized in that: The driving end of the screw rod (302) is connected to a hand-cranked wheel (304) or a driving motor.

10. The auxiliary unloading device according to claim 8, characterized in that: The support mechanism (100) is provided with a guide rail (305), and the lifting bracket (301) is slidably connected to the guide rail (305).

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