CN113928772A - Automatic three-dimensional storage system of cold chain commodity circulation - Google Patents

Abstract

The invention belongs to the technical field of cold chain logistics, and particularly relates to an automatic three-dimensional cold chain logistics storage system which comprises a bottom plate, wherein sleeve columns are fixed on the top of the bottom plate, a top plate is connected with a lifting mechanism, two first openings which are symmetrically distributed are formed in two sides of the top plate in a penetrating mode, toothed plates are arranged in the first openings, the tops of the toothed plates are fixed with the same supporting plate, two fixing blocks and a first supporting plate are fixed on two sides of the top plate, a first sliding groove is formed in the top of the first supporting plate, a first sliding block is connected in the first sliding groove in a sliding mode, supports are fixed on the tops of the first sliding blocks, the same clamping plate is fixed between the supports on two sides of the same side, and a first screw is connected in the first sliding groove in a rotating mode. According to the invention, goods are placed on the supporting plate, the supporting plate moves downwards under pressure, the first screw rod is driven to rotate through the transmission mechanism, the first sliding block drives the clamping plates to move, and the two clamping plates correct and fix the positions of the goods, so that the goods are effectively prevented from falling.

Description

Automatic three-dimensional storage system of cold chain commodity circulation

Technical Field

The invention relates to the technical field of cold-chain logistics, in particular to an automatic three-dimensional cold-chain logistics storage system.

Background

Cold chain logistics generally refers to a system project for producing, storing, transporting and selling refrigerated and frozen foods, and keeping the refrigerated and frozen foods in a specified low-temperature environment in all links before consumption so as to ensure the quality of the foods and reduce the loss of the foods. It is established with the progress of science and technology and the development of refrigeration technology, and is a low-temperature logistics process based on refrigeration technology and by means of refrigeration technology.

The automatic three-dimensional warehouse system of cold chain logistics generally includes the goods shelves of stacking the goods, transports the fork truck of goods and piles the jacking equipment of putting goods shelves with the goods, and current jacking equipment possesses raising and lowering functions and unloading function, places the goods on jacking equipment after, the operation that rises, removes to set position after, unloads, and at this in-process, the goods lacks stable fixed establishment, has the risk that the goods dropped, consequently, makes corresponding improvement to this problem.

Disclosure of Invention

Based on the technical problem that the existing warehousing system has goods falling risks, the invention provides an automatic three-dimensional warehousing system for cold-chain logistics.

The invention provides an automatic three-dimensional cold-chain logistics storage system which comprises a bottom plate, wherein a sleeve column is fixed at the top of the bottom plate through bolts, a lifting mechanism is arranged in the sleeve column and connected with a top plate, two first openings which are symmetrically distributed are formed in two sides of the top plate in a penetrating mode, toothed plates are arranged in the first openings, the tops of the toothed plates are fixed with the same supporting plate through bolts, two fixed blocks and a first supporting plate which are symmetrically distributed are fixed on two sides of the top plate through bolts, a transmission mechanism is arranged on the fixed blocks, a first sliding groove is formed in the top of the first supporting plate, a first sliding block is connected in the first sliding groove in a sliding mode, supports are fixed on the tops of the first sliding blocks through bolts, the same clamping plate is fixed between the supports on two sides of the same side through bolts, a first screw rod is rotatably connected in the first sliding groove through a bearing, and the first screw rod is in threaded connection with the first sliding block.

Preferably, drive mechanism includes the gear, and the outside of fixed block is rotated through the bearing and is connected with the connecting axle, and the gear cover is established and is fixed in on the connecting axle, and gear and pinion rack meshing are connected, and the connecting axle outside cover is established and is fixed with the second band pulley, and the inboard cover of first screw rod is established and is fixed with first band pulley, and the cover is equipped with same belt between first band pulley and the second band pulley.

Preferably, roof bottom both sides all are fixed with the guide way board of two symmetric distributions through the bolt, and guide way board outside sliding connection has the movable block, has same direction spring through the bolt fastening between movable block and the guide way board bottom inner wall, passes through the bolt fastening between movable block and the pinion rack.

Preferably, elevating system includes first motor, and the embedded groove has been seted up at the cover post top, and first motor passes through the bolt fastening in embedded groove bottom inner wall, and first motor output shaft has the second screw rod, and second screw rod top threaded connection has the inner prop, passes through the bolt fastening between inner prop and the roof.

Preferably, the second spout has all been seted up to embedded groove both ends inner wall, and sliding connection has the second slider in the second spout, passes through the bolt fastening between second slider and the interior post.

Preferably, two symmetrically distributed loop bars are fixed to two sides of the top of the bottom plate through bolts, an inner rod is inserted into the top of the loop bars, and the inner rod and the top plate are fixed through bolts.

Preferably, two symmetrically distributed grooves are formed in the front end of the supporting plate, limiting grooves are formed in the inner walls of the two sides of each groove, limiting blocks are connected in the limiting grooves in a sliding mode, the two limiting blocks are fixedly provided with the same supporting rod through bolts, the front ends of the two supporting rods are fixedly provided with the same positioning plate through bolts, and the positioning plate is provided with an unloading mechanism and an expanding mechanism.

Preferably, the unloading mechanism comprises a push rod, the push rod and a positioning plate are arranged in a penetrating mode, a push plate is fixed at the rear end of the push rod through a bolt, a second supporting plate is fixed at the front end of the positioning plate through a bolt, a guide block is connected to the top of the second supporting plate in a sliding mode, the guide block and the push rod are fixed through a bolt, a third screw rod is rotatably connected to the inside of the second supporting plate through a bearing, a second motor is fixed at the front end of the second supporting plate through a bolt, an output shaft of the second motor is fixed with the third screw rod through a bolt, and the third screw rod is in threaded connection with the guide block.

Preferably, the expanding mechanism comprises a third supporting plate, the third supporting plate is fixed to the bottom of the supporting plate through a bolt, a third sliding groove is formed in the bottom of the third supporting plate, a third sliding block is connected in the third sliding groove in a sliding mode, a same supporting rod is fixed between the third sliding block and the positioning plate through a bolt, a fourth screw is rotatably connected in the third sliding groove through a bearing, the fourth screw is in threaded connection with the third sliding block, a third motor is fixed to the rear end of the third supporting plate through a bolt, and an output shaft of the third motor is fixed to the fourth screw through a bolt.

Preferably, the guide groove plate rear end runs through the second opening of seting up a plurality of upper and lower evenly distributed, and the fourth spout has been seted up to second opening top inner wall, and sliding connection has the fourth slider in the fourth spout, has reset spring through the bolt fastening between fourth slider and the fourth spout inner wall, and fourth slider bottom has the piece of stabilizing the speed through the bolt fastening, and the piece cross-section of stabilizing the speed sets to the arc.

Compared with the prior art, the invention provides a cold-chain logistics automatic three-dimensional storage system, which has the following beneficial effects:

1. the automatic three-dimensional storage system for cold-chain logistics places goods on the supporting plate by arranging the supporting plate, the supporting plate is pressed, so that the toothed plate moves downwards to be meshed with the driving gear to rotate, then the connecting shaft and the second belt wheel are driven to rotate, and then the first belt wheel and the first screw rod are driven to rotate through the belt, under the action of the screw thread, the first slide block moves inwards along the first sliding groove, and then the bracket and the clamping plates are synchronously driven to move, so that the two clamping plates on the two sides correct and fix the position of the goods, thereby effectively preventing the goods from falling off and simultaneously synchronously driving the movable block to move downwards along the axial direction of the guide groove plate in the downward movement process of the toothed plate, the guide spring is extruded, thereby reducing the downward moving speed of the supporting plate, improving the protection of goods, and the operation safety is ensured, and meanwhile, the supporting plate can be automatically reset through the guide spring after unloading.

2. This automatic three-dimensional warehouse system of cold chain logistics, through setting up the fourth screw rod, can be when the goods volume is great, start the third motor, third motor output shaft drives the fourth screw rod and rotates, under the screw thread effect, make the third slider remove to the front end along the third spout, then drive bracing piece and locating plate in step and remove, the locating plate drags the die-pin to remove along the recess, can form great support area through die-pin and layer board, make this type goods stably place, thereby improve the functionality of this equipment, and the top of die-pin and the top of layer board keep level, thereby make the goods place more steadily.

3. This automatic three-dimensional warehouse system of cold chain logistics, through setting up the speed stabilizing block, when the movable block moves down along the axial of guide way board, the movable block forms the extrusion to speed stabilizing block, speed stabilizing block cross-section sets to the arc, can make speed stabilizing block follow the fourth slider together, return to contracting in the second opening along the fourth spout, the fourth slider forms the extrusion to reset spring, thereby the improvement moves down the action to the movable block and hinders, thereby effectively reduce the speed that moves down of movable block, thereby make when putting the goods, goods and layer board speed stabilizing move down, guarantee goods and operating personnel's safety.

Drawings

Fig. 1 is a schematic overall structure diagram of an automated three-dimensional cold-chain logistics storage system according to the present invention;

fig. 2 is an enlarged schematic structural diagram of a position a of the automatic three-dimensional cold-chain logistics storage system provided by the invention;

fig. 3 is a schematic structural view of a top plate bottom of a cold-chain logistics automatic three-dimensional warehousing system provided by the invention;

fig. 4 is an enlarged schematic structural diagram of a position B of the automatic three-dimensional cold-chain logistics storage system provided by the invention;

fig. 5 is an enlarged schematic structural diagram of a position C of the automatic three-dimensional cold-chain logistics storage system provided by the invention;

fig. 6 is a schematic diagram of an internal structure of a sleeve column of the cold-chain logistics automatic three-dimensional storage system provided by the invention;

fig. 7 is a schematic structural diagram of a pallet of the cold-chain logistics automatic three-dimensional warehousing system according to the present invention;

FIG. 8 is a schematic structural diagram of a pallet portion of a cold-chain logistics automatic three-dimensional warehousing system according to the present invention;

fig. 9 is a schematic structural view of a guide slot plate of the cold-chain logistics automatic three-dimensional storage system according to the present invention;

fig. 10 is an enlarged schematic structural diagram of a cold-chain logistics automatic three-dimensional storage system at position D according to the present invention.

In the figure: 1. a base plate; 2. sleeving a column; 3. a top plate; 4. a support plate; 5. a toothed plate; 6. a first opening; 7. a fixed block; 8. a connecting shaft; 9. a gear; 10. a first support plate; 11. a first chute; 12. a first slider; 13. a first screw; 14. a support; 15. a splint; 16. a first pulley; 17. a second pulley; 18. a belt; 19. a guide groove plate; 20. a movable block; 21. a guide spring; 22. a groove is embedded; 23. a first motor; 24. a second screw; 25. a second chute; 26. a second slider; 27. a loop bar; 28. an inner rod; 29. positioning a plate; 30. a push rod; 31. a second support plate; 32. a guide block; 33. a third screw; 34. a second motor; 35. a third support plate; 36. a third chute; 37. a third slider; 38. a fourth screw; 39. a third motor; 40. a groove; 41. a support rod; 42. a limiting groove; 43. a limiting block; 44. a second opening; 45. a fourth chute; 46. a return spring; 47. a fourth slider; 48. and (5) a speed stabilizing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-8, an automatic three-dimensional cold-chain logistics warehousing system comprises a bottom plate 1, a sleeve column 2 is fixed on the top of the bottom plate 1 through bolts, a lifting mechanism is arranged in the sleeve column 2 and connected with a top plate 3, two first openings 6 symmetrically distributed are formed in two sides of the top plate 3 in a penetrating manner, toothed plates 5 are arranged in the first openings 6, the tops of the toothed plates 5 are fixed with a same supporting plate 4 through bolts, two fixed blocks 7 symmetrically distributed and a first supporting plate 10 are fixed on two sides of the top plate 3 through bolts, a transmission mechanism is arranged on the fixed blocks 7, a first chute 11 is formed in the top of the first supporting plate 10, a first sliding block 12 is connected in the first chute 11 in a sliding manner, a bracket 14 is fixed on the top of the first sliding block 12 through bolts, a same clamping plate 15 is fixed between the brackets 14 on two sides on the same side through bolts, and a first screw 13 is rotatably connected in the first chute 11 through a bearing, the first screw 13 is screwed to the first slider 12.

Further, drive mechanism includes gear 9, and the outside of fixed block 7 is connected with connecting axle 8 through the bearing rotation, and on 9 covers of gear were established and are fixed in connecting axle 8, gear 9 and pinion rack 5 meshing connection, and 8 outside covers of connecting axle are established and are fixed with second band pulley 17, and the inboard cover of first screw rod 13 is established and is fixed with first band pulley 16, and the cover is equipped with same belt 18 between first band pulley 16 and the second band pulley 17, can rotate through gear 9, drives first screw rod 13 and rotates.

Further, 3 bottom both sides of roof all have two symmetric distribution's guide way board 19 through the bolt fastening, and the sliding connection in the guide way board 19 outside has a movable block 20, has same guide spring 21 through the bolt fastening between movable block 20 and the 19 bottom inner walls of guide way board, through the bolt fastening between movable block 20 and the pinion rack 5, can make layer board 4 move down at a steady speed.

Further, elevating system includes first motor 23, and embedded groove 22 has been seted up at 2 tops of cover post, and first motor 23 passes through the bolt fastening in embedded groove 22 bottom inner wall, and 23 output shaft of first motor have second screw rod 24, and 24 top threaded connection of second screw rod have interior post, through the bolt fastening between interior post and the roof 3, can realize the lift action, promote the goods to on the goods shelves.

Further, second spout 25 has all been seted up to embedded groove 22 both ends inner wall, and sliding connection has second slider 26 in second spout 25, passes through the bolt fastening between second slider 26 and the interior post, can carry out spacing removal to the interior post.

Furthermore, two symmetrically distributed loop bars 27 are fixed on two sides of the top of the bottom plate 1 through bolts, an inner rod 28 is inserted into the top of the loop bar 27, and the inner rod 28 and the top plate 3 are fixed through bolts, so that the stability of the top plate 3 can be improved, uneven stress is prevented, and the side inclination is caused.

Further, two symmetrically distributed grooves 40 are formed in the front end of the supporting plate 4, limiting grooves 42 are formed in inner walls of two sides of each groove 40, limiting blocks 43 are connected in the limiting grooves 42 in a sliding mode, the same supporting rod 41 is fixed between the two limiting blocks 43 through bolts, the front ends of the two supporting rods 41 are fixed with the same positioning plate 29 through bolts, unloading mechanisms and expanding mechanisms are arranged on the positioning plate 29, and the supporting rods 41 and the supporting plate 4 can be matched to support and protect cargoes with different volumes.

Further, the unloading mechanism comprises a push rod 30, the push rod 30 and a positioning plate 29 are arranged in a penetrating mode, a push plate is fixed at the rear end of the push rod 30 through bolts, a second support plate 31 is fixed at the front end of the positioning plate 29 through bolts, a guide block 32 is slidably connected to the top of the second support plate 31, the guide block 32 and the push rod 30 are fixed through bolts, a third screw 33 is rotatably connected to the inside of the second support plate 31 through a bearing, a second motor 34 is fixed at the front end of the second support plate 31 through bolts, an output shaft of the second motor 34 is fixed with the third screw 33 through bolts, and the third screw 33 is in threaded connection with the guide block 32, so that unloading operation can be carried out.

Further, the expanding mechanism comprises a third support plate 35, the third support plate 35 is fixed to the bottom of the support plate 4 through a bolt, a third sliding groove 36 is formed in the bottom of the third support plate 35, a third sliding block 37 is connected to the third sliding groove 36 in a sliding mode, a same support rod is fixed between the third sliding block 37 and the positioning plate 29 through a bolt, a fourth screw 38 is rotatably connected to the third sliding groove 36 through a bearing, the fourth screw 38 is in threaded connection with the third sliding block 37, a third motor 39 is fixed to the rear end of the third support plate 35 through a bolt, an output shaft of the third motor 39 is fixed to the fourth screw 38 through a bolt, and the extending length of the support rod 41 can be adjusted through the fourth screw 38.

The working principle is as follows: when in use, goods are placed on the supporting plate 4, the supporting plate 4 is pressed, so that the toothed plate 5 moves downwards, then the toothed plate is meshed with the driving gear 9 to rotate, then the connecting shaft 8 and the second belt wheel 17 are driven to rotate, then the first belt wheel 16 and the first screw 13 are driven to rotate through the belt 18, under the action of threads, the first sliding block 12 moves inwards along the first sliding groove 11, then the bracket 14 and the clamping plates 15 are synchronously driven to move, so that the two clamping plates 15 on two sides correct and fix the positions of the goods, thereby effectively preventing the goods from falling off, meanwhile, in the downward movement process of the toothed plate 5, the movable block 20 is synchronously driven to move downwards along the axial direction of the guide groove plate 19, the guide spring 21 is extruded, the downward movement speed of the supporting plate 4 is reduced, the protection on the goods is improved, the operation safety is ensured, and meanwhile, the automatic reset operation can be carried out on the supporting plate 4 through the guide spring 21 after unloading, when the goods is bulky, start third motor 39, third motor 39 output shaft drives fourth screw rod 38 and rotates, under the screw thread effect, make third slider 37 remove to the front end along third spout 36, then drive bracing piece and locating plate 29 in step and remove, locating plate 29 drags die-pin 41 and removes along recess 40, can form great support through die-pin 41 and layer board 4 and protect the area, make this type goods stably place, thereby improve the functionality of this equipment, and the top of die-pin 41 and the top of layer board 4 keep level, thereby make the goods place more steadily.

Example 2

Referring to fig. 9-10, an automatic three-dimensional warehouse system of cold chain logistics, guide way board 19 rear end runs through and sets up a plurality of second openings 44 that evenly distributed from top to bottom, and fourth spout 45 has been seted up to second opening 44 top inner wall, and sliding connection has fourth slider 47 in fourth spout 45, has reset spring 46 through the bolt fastening between fourth slider 47 and the fourth spout 45 inner wall, and fourth slider 47 bottom has speed stabilizing block 48 through the bolt fastening, and speed stabilizing block 48 cross-section sets up to the arc.

The working principle is as follows: during the use, when the movable block 20 is along the axial downstream of guide way board 19, the movable block 20 forms the extrusion to the speed stabilizing block 48, speed stabilizing block 48 cross-section sets to the arc, can make speed stabilizing block 48 follow fourth slider 47 together, retract in fourth spout 45 to second opening 44, fourth slider 47 forms the extrusion to reset spring 46, thereby the improvement hinders the action of moving down the movable block 20, thereby effectively reduce the speed that moves down of movable block 20, thereby make when putting the goods, goods and layer board 4 move down at a steady speed.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, 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 an intermediate. 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 the invention. 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.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. The automatic three-dimensional cold-chain logistics storage system comprises a bottom plate (1) and is characterized in that a sleeve column (2) is fixedly connected to the top of the bottom plate (1), a lifting mechanism is arranged in the sleeve column (2) and connected with a top plate (3), two first openings (6) which are symmetrically distributed are formed in two sides of the top plate (3) in a penetrating mode, toothed plates (5) are arranged in the first openings (6), the top of the toothed plates (5) is fixedly connected with a same supporting plate (4), two fixed blocks (7) which are symmetrically distributed and a first supporting plate (10) are fixedly connected to two sides of the top plate (3), a transmission mechanism is arranged on each fixed block (7), a first sliding groove (11) is formed in the top of the first supporting plate (10), a first sliding block (12) is connected in the first sliding groove (11) in a sliding mode, and a support (14) is fixedly connected to the top of the first sliding block (12), fixedly connected with same splint (15) between both sides support (14) of homonymy, first spout (11) internal rotation is connected with first screw rod (13), first screw rod (13) and first slider (12) threaded connection.

2. The automatic three-dimensional warehousing system of cold chain logistics according to claim 1, characterized in that the transmission mechanism comprises a gear (9), the outside of the fixed block (7) is rotatably connected with a connecting shaft (8), the gear (9) is sleeved and fixed on the connecting shaft (8), the gear (9) and the toothed plate (5) are meshed and connected, the outside of the connecting shaft (8) is sleeved and fixed with a second belt wheel (17), the inside of the first screw (13) is sleeved and fixed with a first belt wheel (16), and the same belt (18) is sleeved between the first belt wheel (16) and the second belt wheel (17).

3. The automatic three-dimensional cold-chain logistics warehousing system according to claim 1, wherein two symmetrically distributed guide groove plates (19) are fixedly connected to two sides of the bottom of the top plate (3), a movable block (20) is slidably connected to the outer side of each guide groove plate (19), the same guide spring (21) is fixedly connected between the movable block (20) and the inner wall of the bottom of each guide groove plate (19), and the movable block (20) is fixedly connected with the toothed plate (5).

4. The automatic three-dimensional cold-chain logistics warehousing system of claim 1, wherein the lifting mechanism comprises a first motor (23), an embedded groove (22) is formed in the top of the sleeve column (2), the first motor (23) is fixedly connected to the inner wall of the bottom of the embedded groove (22), a second screw (24) is connected to an output shaft of the first motor (23), an inner column is connected to the top of the second screw (24) in a threaded manner, and the inner column is fixedly connected to the top plate (3).

5. The automatic three-dimensional cold-chain logistics warehousing system according to claim 4, wherein the inner walls of the two ends of the embedded groove (22) are provided with second sliding grooves (25), the second sliding blocks (26) are connected in the second sliding grooves (25) in a sliding manner, and the second sliding blocks (26) are fixedly connected with the inner columns.

6. The automatic three-dimensional cold-chain logistics warehousing system as claimed in claim 1, wherein two symmetrically distributed loop bars (27) are fixedly connected to both sides of the top of the bottom plate (1), an inner rod (28) is inserted into the top of the loop bars (27), and the inner rod (28) is fixedly connected with the top plate (3).

7. The automatic three-dimensional cold-chain logistics warehousing system as claimed in claim 1, wherein the front end of the supporting plate (4) is provided with two symmetrically distributed grooves (40), the inner walls of the two sides of each groove (40) are provided with limiting grooves (42), the limiting grooves (42) are slidably connected with limiting blocks (43), the same supporting rod (41) is fixedly connected between the two limiting blocks (43), the front ends of the two supporting rods (41) are fixedly connected with the same positioning plate (29), and the positioning plate (29) is provided with a discharging mechanism and an expanding mechanism.

8. The automatic three-dimensional cold-chain logistics warehousing system as claimed in claim 7, wherein the unloading mechanism comprises a push rod (30), the push rod (30) and a positioning plate (29) are arranged in a penetrating manner, a push plate is fixedly connected to the rear end of the push rod (30), a second support plate (31) is fixedly connected to the front end of the positioning plate (29), a guide block (32) is slidably connected to the top of the second support plate (31), the guide block (32) is fixedly connected with the push rod (30), a third screw (33) is rotatably connected to the inside of the second support plate (31), a second motor (34) is fixedly connected to the front end of the second support plate (31), an output shaft of the second motor (34) is fixedly connected with the third screw (33), and the third screw (33) is in threaded connection with the guide block (32).

9. The automatic three-dimensional cold-chain logistics warehousing system as claimed in claim 7, wherein the expanding mechanism comprises a third support plate (35), the third support plate (35) is fixedly connected to the bottom of the support plate (4), a third chute (36) is formed in the bottom of the third support plate (35), a third slider (37) is slidably connected in the third chute (36), a same support rod is fixedly connected between the third slider (37) and the positioning plate (29), a fourth screw (38) is rotatably connected in the third chute (36), the fourth screw (38) is in threaded connection with the third slider (37), a third motor (39) is fixedly connected to the rear end of the third support plate (35), and an output shaft of the third motor (39) is fixedly connected with the fourth screw (38).

10. The automatic three-dimensional warehousing system for cold chain logistics according to claim 3, wherein a plurality of second openings (44) which are uniformly distributed vertically are formed in the rear end of the guide groove plate (19) in a penetrating manner, a fourth sliding groove (45) is formed in the inner wall of the top of each second opening (44), a fourth sliding block (47) is connected in the fourth sliding groove (45) in a sliding manner, a reset spring (46) is fixedly connected between each fourth sliding block (47) and the inner wall of each fourth sliding groove (45), a speed stabilizing block (48) is fixedly connected to the bottom of each fourth sliding block (47), and the section of each speed stabilizing block (48) is arranged in an arc shape.

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